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putty/pageant.c

1832 строки
49 KiB
C
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Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
/*
* pageant.c: cross-platform code to implement Pageant.
*/
#include <stddef.h>
#include <stdlib.h>
#include <assert.h>
#include "putty.h"
#include "ssh.h"
#include "pageant.h"
/*
* We need this to link with the RSA code, because rsaencrypt()
* pads its data with random bytes. Since we only use rsadecrypt()
* and the signing functions, which are deterministic, this should
* never be called.
*
* If it _is_ called, there is a _serious_ problem, because it
* won't generate true random numbers. So we must scream, panic,
* and exit immediately if that should happen.
*/
int random_byte(void)
{
modalfatalbox("Internal error: attempt to use random numbers in Pageant");
exit(0);
return 0; /* unreachable, but placate optimiser */
}
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
static int pageant_local = FALSE;
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
/*
* rsakeys stores SSH-1 RSA keys. ssh2keys stores all SSH-2 keys.
*/
static tree234 *rsakeys, *ssh2keys;
/*
* Blob structure for passing to the asymmetric SSH-2 key compare
* function, prototyped here.
*/
struct blob {
const unsigned char *blob;
int len;
};
static int cmpkeys_ssh2_asymm(void *av, void *bv);
/*
* Key comparison function for the 2-3-4 tree of RSA keys.
*/
static int cmpkeys_rsa(void *av, void *bv)
{
struct RSAKey *a = (struct RSAKey *) av;
struct RSAKey *b = (struct RSAKey *) bv;
Bignum am, bm;
int alen, blen;
am = a->modulus;
bm = b->modulus;
/*
* Compare by length of moduli.
*/
alen = bignum_bitcount(am);
blen = bignum_bitcount(bm);
if (alen > blen)
return +1;
else if (alen < blen)
return -1;
/*
* Now compare by moduli themselves.
*/
alen = (alen + 7) / 8; /* byte count */
while (alen-- > 0) {
int abyte, bbyte;
abyte = bignum_byte(am, alen);
bbyte = bignum_byte(bm, alen);
if (abyte > bbyte)
return +1;
else if (abyte < bbyte)
return -1;
}
/*
* Give up.
*/
return 0;
}
/*
* Key comparison function for the 2-3-4 tree of SSH-2 keys.
*/
static int cmpkeys_ssh2(void *av, void *bv)
{
struct ssh2_userkey *a = (struct ssh2_userkey *) av;
struct ssh2_userkey *b = (struct ssh2_userkey *) bv;
int i;
int alen, blen;
unsigned char *ablob, *bblob;
int c;
/*
* Compare purely by public blob.
*/
ablob = a->alg->public_blob(a->data, &alen);
bblob = b->alg->public_blob(b->data, &blen);
c = 0;
for (i = 0; i < alen && i < blen; i++) {
if (ablob[i] < bblob[i]) {
c = -1;
break;
} else if (ablob[i] > bblob[i]) {
c = +1;
break;
}
}
if (c == 0 && i < alen)
c = +1; /* a is longer */
if (c == 0 && i < blen)
c = -1; /* a is longer */
sfree(ablob);
sfree(bblob);
return c;
}
/*
* Key comparison function for looking up a blob in the 2-3-4 tree
* of SSH-2 keys.
*/
static int cmpkeys_ssh2_asymm(void *av, void *bv)
{
struct blob *a = (struct blob *) av;
struct ssh2_userkey *b = (struct ssh2_userkey *) bv;
int i;
int alen, blen;
const unsigned char *ablob;
unsigned char *bblob;
int c;
/*
* Compare purely by public blob.
*/
ablob = a->blob;
alen = a->len;
bblob = b->alg->public_blob(b->data, &blen);
c = 0;
for (i = 0; i < alen && i < blen; i++) {
if (ablob[i] < bblob[i]) {
c = -1;
break;
} else if (ablob[i] > bblob[i]) {
c = +1;
break;
}
}
if (c == 0 && i < alen)
c = +1; /* a is longer */
if (c == 0 && i < blen)
c = -1; /* a is longer */
sfree(bblob);
return c;
}
/*
* Create an SSH-1 key list in a malloc'ed buffer; return its
* length.
*/
void *pageant_make_keylist1(int *length)
{
int i, nkeys, len;
struct RSAKey *key;
unsigned char *blob, *p, *ret;
int bloblen;
/*
* Count up the number and length of keys we hold.
*/
len = 4;
nkeys = 0;
for (i = 0; NULL != (key = index234(rsakeys, i)); i++) {
nkeys++;
blob = rsa_public_blob(key, &bloblen);
len += bloblen;
sfree(blob);
len += 4 + strlen(key->comment);
}
/* Allocate the buffer. */
p = ret = snewn(len, unsigned char);
if (length) *length = len;
PUT_32BIT(p, nkeys);
p += 4;
for (i = 0; NULL != (key = index234(rsakeys, i)); i++) {
blob = rsa_public_blob(key, &bloblen);
memcpy(p, blob, bloblen);
p += bloblen;
sfree(blob);
PUT_32BIT(p, strlen(key->comment));
memcpy(p + 4, key->comment, strlen(key->comment));
p += 4 + strlen(key->comment);
}
assert(p - ret == len);
return ret;
}
/*
* Create an SSH-2 key list in a malloc'ed buffer; return its
* length.
*/
void *pageant_make_keylist2(int *length)
{
struct ssh2_userkey *key;
int i, len, nkeys;
unsigned char *blob, *p, *ret;
int bloblen;
/*
* Count up the number and length of keys we hold.
*/
len = 4;
nkeys = 0;
for (i = 0; NULL != (key = index234(ssh2keys, i)); i++) {
nkeys++;
len += 4; /* length field */
blob = key->alg->public_blob(key->data, &bloblen);
len += bloblen;
sfree(blob);
len += 4 + strlen(key->comment);
}
/* Allocate the buffer. */
p = ret = snewn(len, unsigned char);
if (length) *length = len;
/*
* Packet header is the obvious five bytes, plus four
* bytes for the key count.
*/
PUT_32BIT(p, nkeys);
p += 4;
for (i = 0; NULL != (key = index234(ssh2keys, i)); i++) {
blob = key->alg->public_blob(key->data, &bloblen);
PUT_32BIT(p, bloblen);
p += 4;
memcpy(p, blob, bloblen);
p += bloblen;
sfree(blob);
PUT_32BIT(p, strlen(key->comment));
memcpy(p + 4, key->comment, strlen(key->comment));
p += 4 + strlen(key->comment);
}
assert(p - ret == len);
return ret;
}
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
static void plog(void *logctx, pageant_logfn_t logfn, const char *fmt, ...)
#ifdef __GNUC__
__attribute__ ((format (printf, 3, 4)))
#endif
;
static void plog(void *logctx, pageant_logfn_t logfn, const char *fmt, ...)
{
/*
* This is the wrapper that takes a variadic argument list and
* turns it into the va_list that the log function really expects.
* It's safe to call this with logfn==NULL, because we
* double-check that below; but if you're going to do lots of work
* before getting here (such as looping, or hashing things) then
* you should probably check logfn manually before doing that.
*/
if (logfn) {
va_list ap;
va_start(ap, fmt);
logfn(logctx, fmt, ap);
va_end(ap);
}
}
void *pageant_handle_msg(const void *msg, int msglen, int *outlen,
void *logctx, pageant_logfn_t logfn)
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
{
const unsigned char *p = msg;
const unsigned char *msgend;
unsigned char *ret = snewn(AGENT_MAX_MSGLEN, unsigned char);
int type;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
const char *fail_reason;
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
msgend = p + msglen;
/*
* Get the message type.
*/
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (msgend < p+1) {
fail_reason = "message contained no type code";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
type = *p++;
switch (type) {
case SSH1_AGENTC_REQUEST_RSA_IDENTITIES:
/*
* Reply with SSH1_AGENT_RSA_IDENTITIES_ANSWER.
*/
{
int len;
void *keylist;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: SSH1_AGENTC_REQUEST_RSA_IDENTITIES");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
ret[4] = SSH1_AGENT_RSA_IDENTITIES_ANSWER;
keylist = pageant_make_keylist1(&len);
if (len + 5 > AGENT_MAX_MSGLEN) {
sfree(keylist);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "output would exceed max msglen";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
PUT_32BIT(ret, len + 1);
memcpy(ret + 5, keylist, len);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH1_AGENT_RSA_IDENTITIES_ANSWER");
if (logfn) { /* skip this loop if not logging */
int i;
struct RSAKey *rkey;
for (i = 0; NULL != (rkey = pageant_nth_ssh1_key(i)); i++) {
char fingerprint[128];
rsa_fingerprint(fingerprint, sizeof(fingerprint), rkey);
plog(logctx, logfn, "returned key: %s", fingerprint);
}
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
sfree(keylist);
}
break;
case SSH2_AGENTC_REQUEST_IDENTITIES:
/*
* Reply with SSH2_AGENT_IDENTITIES_ANSWER.
*/
{
int len;
void *keylist;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: SSH2_AGENTC_REQUEST_IDENTITIES");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
ret[4] = SSH2_AGENT_IDENTITIES_ANSWER;
keylist = pageant_make_keylist2(&len);
if (len + 5 > AGENT_MAX_MSGLEN) {
sfree(keylist);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "output would exceed max msglen";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
PUT_32BIT(ret, len + 1);
memcpy(ret + 5, keylist, len);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH2_AGENT_IDENTITIES_ANSWER");
if (logfn) { /* skip this loop if not logging */
int i;
struct ssh2_userkey *skey;
for (i = 0; NULL != (skey = pageant_nth_ssh2_key(i)); i++) {
Centralise SSH-2 key fingerprinting into sshpubk.c. There were ad-hoc functions for fingerprinting a bare key blob in both cmdgen.c and pageant.c, not quite doing the same thing. Also, every SSH-2 public key algorithm in the code base included a dedicated fingerprint() method, which is completely pointless since SSH-2 key fingerprints are computed in an algorithm-independent way (just hash the standard-format public key blob), so each of those methods was just duplicating the work of the public_blob() method with a less general output mechanism. Now sshpubk.c centrally provides an ssh2_fingerprint_blob() function that does all the real work, plus an ssh2_fingerprint() function that wraps it and deals with calling public_blob() to get something to fingerprint. And the fingerprint() method has been completely removed from ssh_signkey and all its implementations, and good riddance.
2015-05-12 16:35:44 +03:00
char *fingerprint = ssh2_fingerprint(skey->alg,
skey->data);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "returned key: %s %s",
fingerprint, skey->comment);
sfree(fingerprint);
}
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
sfree(keylist);
}
break;
case SSH1_AGENTC_RSA_CHALLENGE:
/*
* Reply with either SSH1_AGENT_RSA_RESPONSE or
* SSH_AGENT_FAILURE, depending on whether we have that key
* or not.
*/
{
struct RSAKey reqkey, *key;
Bignum challenge, response;
unsigned char response_source[48], response_md5[16];
struct MD5Context md5c;
int i, len;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: SSH1_AGENTC_RSA_CHALLENGE");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
p += 4;
i = ssh1_read_bignum(p, msgend - p, &reqkey.exponent);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (i < 0) {
fail_reason = "request truncated before key exponent";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
p += i;
i = ssh1_read_bignum(p, msgend - p, &reqkey.modulus);
if (i < 0) {
freebn(reqkey.exponent);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before key modulus";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
p += i;
i = ssh1_read_bignum(p, msgend - p, &challenge);
if (i < 0) {
freebn(reqkey.exponent);
freebn(reqkey.modulus);
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
freebn(challenge);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before challenge";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
p += i;
if (msgend < p+16) {
freebn(reqkey.exponent);
freebn(reqkey.modulus);
freebn(challenge);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before session id";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
memcpy(response_source + 32, p, 16);
p += 16;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (msgend < p+4) {
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
freebn(reqkey.exponent);
freebn(reqkey.modulus);
freebn(challenge);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before response type";
goto failure;
}
if (GET_32BIT(p) != 1) {
freebn(reqkey.exponent);
freebn(reqkey.modulus);
freebn(challenge);
fail_reason = "response type other than 1 not supported";
goto failure;
}
if (logfn) {
char fingerprint[128];
reqkey.comment = NULL;
rsa_fingerprint(fingerprint, sizeof(fingerprint), &reqkey);
plog(logctx, logfn, "requested key: %s", fingerprint);
}
if ((key = find234(rsakeys, &reqkey, NULL)) == NULL) {
freebn(reqkey.exponent);
freebn(reqkey.modulus);
freebn(challenge);
fail_reason = "key not found";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
response = rsadecrypt(challenge, key);
for (i = 0; i < 32; i++)
response_source[i] = bignum_byte(response, 31 - i);
MD5Init(&md5c);
MD5Update(&md5c, response_source, 48);
MD5Final(response_md5, &md5c);
smemclr(response_source, 48); /* burn the evidence */
freebn(response); /* and that evidence */
freebn(challenge); /* yes, and that evidence */
freebn(reqkey.exponent); /* and free some memory ... */
freebn(reqkey.modulus); /* ... while we're at it. */
/*
* Packet is the obvious five byte header, plus sixteen
* bytes of MD5.
*/
len = 5 + 16;
PUT_32BIT(ret, len - 4);
ret[4] = SSH1_AGENT_RSA_RESPONSE;
memcpy(ret + 5, response_md5, 16);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH1_AGENT_RSA_RESPONSE");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
break;
case SSH2_AGENTC_SIGN_REQUEST:
/*
* Reply with either SSH2_AGENT_SIGN_RESPONSE or
* SSH_AGENT_FAILURE, depending on whether we have that key
* or not.
*/
{
struct ssh2_userkey *key;
struct blob b;
const unsigned char *data;
unsigned char *signature;
int datalen, siglen, len;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: SSH2_AGENTC_SIGN_REQUEST");
if (msgend < p+4) {
fail_reason = "request truncated before public key";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
b.len = toint(GET_32BIT(p));
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (b.len < 0 || b.len > msgend - (p+4)) {
fail_reason = "request truncated before public key";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
p += 4;
b.blob = p;
p += b.len;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (msgend < p+4) {
fail_reason = "request truncated before string to sign";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
datalen = toint(GET_32BIT(p));
p += 4;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (datalen < 0 || datalen > msgend - p) {
fail_reason = "request truncated before string to sign";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
data = p;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (logfn) {
Centralise SSH-2 key fingerprinting into sshpubk.c. There were ad-hoc functions for fingerprinting a bare key blob in both cmdgen.c and pageant.c, not quite doing the same thing. Also, every SSH-2 public key algorithm in the code base included a dedicated fingerprint() method, which is completely pointless since SSH-2 key fingerprints are computed in an algorithm-independent way (just hash the standard-format public key blob), so each of those methods was just duplicating the work of the public_blob() method with a less general output mechanism. Now sshpubk.c centrally provides an ssh2_fingerprint_blob() function that does all the real work, plus an ssh2_fingerprint() function that wraps it and deals with calling public_blob() to get something to fingerprint. And the fingerprint() method has been completely removed from ssh_signkey and all its implementations, and good riddance.
2015-05-12 16:35:44 +03:00
char *fingerprint = ssh2_fingerprint_blob(b.blob, b.len);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "requested key: %s", fingerprint);
sfree(fingerprint);
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (!key) {
fail_reason = "key not found";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
signature = key->alg->sign(key->data, (const char *)data,
datalen, &siglen);
len = 5 + 4 + siglen;
PUT_32BIT(ret, len - 4);
ret[4] = SSH2_AGENT_SIGN_RESPONSE;
PUT_32BIT(ret + 5, siglen);
memcpy(ret + 5 + 4, signature, siglen);
sfree(signature);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH2_AGENT_SIGN_RESPONSE");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
break;
case SSH1_AGENTC_ADD_RSA_IDENTITY:
/*
* Add to the list and return SSH_AGENT_SUCCESS, or
* SSH_AGENT_FAILURE if the key was malformed.
*/
{
struct RSAKey *key;
char *comment;
int n, commentlen;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: SSH1_AGENTC_ADD_RSA_IDENTITY");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
key = snew(struct RSAKey);
memset(key, 0, sizeof(struct RSAKey));
n = makekey(p, msgend - p, key, NULL, 1);
if (n < 0) {
freersakey(key);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before public key";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
p += n;
n = makeprivate(p, msgend - p, key);
if (n < 0) {
freersakey(key);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before private key";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
p += n;
Fix SSH-1 RSA key handling in Pageant. The auxiliary values (the two primes and the inverse of one mod the other) were being read into the key structure wrongly, causing crt_modpow() in sshrsa.c to give the wrong answers where straight modpow would not have. This must have been broken ever since I implemented the RSA CRT optimisation in 2011. And nobody has noticed, which is a good sign for the phasing out of SSH-1 :-) I only spotted it myself because I was testing all the Pageant message types in the course of implementing the new logging.
2015-05-06 22:49:07 +03:00
/* SSH-1 names p and q the other way round, i.e. we have
* the inverse of p mod q and not of q mod p. We swap the
* names, because our internal RSA wants iqmp. */
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
n = ssh1_read_bignum(p, msgend - p, &key->iqmp); /* p^-1 mod q */
if (n < 0) {
freersakey(key);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before iqmp";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
p += n;
Fix SSH-1 RSA key handling in Pageant. The auxiliary values (the two primes and the inverse of one mod the other) were being read into the key structure wrongly, causing crt_modpow() in sshrsa.c to give the wrong answers where straight modpow would not have. This must have been broken ever since I implemented the RSA CRT optimisation in 2011. And nobody has noticed, which is a good sign for the phasing out of SSH-1 :-) I only spotted it myself because I was testing all the Pageant message types in the course of implementing the new logging.
2015-05-06 22:49:07 +03:00
n = ssh1_read_bignum(p, msgend - p, &key->q); /* p */
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
if (n < 0) {
freersakey(key);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before p";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
p += n;
Fix SSH-1 RSA key handling in Pageant. The auxiliary values (the two primes and the inverse of one mod the other) were being read into the key structure wrongly, causing crt_modpow() in sshrsa.c to give the wrong answers where straight modpow would not have. This must have been broken ever since I implemented the RSA CRT optimisation in 2011. And nobody has noticed, which is a good sign for the phasing out of SSH-1 :-) I only spotted it myself because I was testing all the Pageant message types in the course of implementing the new logging.
2015-05-06 22:49:07 +03:00
n = ssh1_read_bignum(p, msgend - p, &key->p); /* q */
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
if (n < 0) {
freersakey(key);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before q";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
p += n;
if (msgend < p+4) {
freersakey(key);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before key comment";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
commentlen = toint(GET_32BIT(p));
if (commentlen < 0 || commentlen > msgend - p) {
freersakey(key);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before key comment";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
comment = snewn(commentlen+1, char);
if (comment) {
memcpy(comment, p + 4, commentlen);
comment[commentlen] = '\0';
key->comment = comment;
}
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (logfn) {
char fingerprint[128];
rsa_fingerprint(fingerprint, sizeof(fingerprint), key);
plog(logctx, logfn, "submitted key: %s", fingerprint);
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
if (add234(rsakeys, key) == key) {
keylist_update();
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
PUT_32BIT(ret, 1);
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
ret[4] = SSH_AGENT_SUCCESS;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH_AGENT_SUCCESS");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
} else {
freersakey(key);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "key already present";
goto failure;
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
}
break;
case SSH2_AGENTC_ADD_IDENTITY:
/*
* Add to the list and return SSH_AGENT_SUCCESS, or
* SSH_AGENT_FAILURE if the key was malformed.
*/
{
struct ssh2_userkey *key;
char *comment;
const char *alg;
int alglen, commlen;
int bloblen;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: SSH2_AGENTC_ADD_IDENTITY");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (msgend < p+4) {
fail_reason = "request truncated before key algorithm";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
alglen = toint(GET_32BIT(p));
p += 4;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (alglen < 0 || alglen > msgend - p) {
fail_reason = "request truncated before key algorithm";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
alg = (const char *)p;
p += alglen;
key = snew(struct ssh2_userkey);
Remove the list of key algorithms in pageant.c. The only reason those couldn't be replaced with a call to the centralised find_pubkey_alg is because that function takes a zero- terminated string and instead we had a (length,pointer) string. Easily fixed; there's now a find_pubkey_alg_len(), and we call that. This also fixes a string-matching bug in which the sense of memcmp was reversed by mistake for ECDSA keys!
2015-05-07 21:57:46 +03:00
key->alg = find_pubkey_alg_len(alglen, alg);
if (!key->alg) {
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "algorithm unknown";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
bloblen = msgend - p;
Pass the ssh_signkey structure itself to public key methods. Not all of them, but the ones that don't get a 'void *key' parameter. This means I can share methods between multiple ssh_signkey structures, and still give those methods an easy way to find out which public key method they're dealing with, by loading parameters from a larger structure in which the ssh_signkey is the first element. (In OO terms, I'm arranging that all static methods of my public key classes get a pointer to the class vtable, to make up for not having a pointer to the class instance.) I haven't actually done anything with the new facility in this commit, but it will shortly allow me to clean up the constant lookups by curve name in the ECDSA code.
2015-05-15 12:12:07 +03:00
key->data = key->alg->openssh_createkey(key->alg, &p, &bloblen);
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
if (!key->data) {
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "key setup failed";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
/*
* p has been advanced by openssh_createkey, but
* certainly not _beyond_ the end of the buffer.
*/
assert(p <= msgend);
if (msgend < p+4) {
key->alg->freekey(key->data);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before key comment";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
commlen = toint(GET_32BIT(p));
p += 4;
if (commlen < 0 || commlen > msgend - p) {
key->alg->freekey(key->data);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "request truncated before key comment";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
}
comment = snewn(commlen + 1, char);
if (comment) {
memcpy(comment, p, commlen);
comment[commlen] = '\0';
}
key->comment = comment;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (logfn) {
Centralise SSH-2 key fingerprinting into sshpubk.c. There were ad-hoc functions for fingerprinting a bare key blob in both cmdgen.c and pageant.c, not quite doing the same thing. Also, every SSH-2 public key algorithm in the code base included a dedicated fingerprint() method, which is completely pointless since SSH-2 key fingerprints are computed in an algorithm-independent way (just hash the standard-format public key blob), so each of those methods was just duplicating the work of the public_blob() method with a less general output mechanism. Now sshpubk.c centrally provides an ssh2_fingerprint_blob() function that does all the real work, plus an ssh2_fingerprint() function that wraps it and deals with calling public_blob() to get something to fingerprint. And the fingerprint() method has been completely removed from ssh_signkey and all its implementations, and good riddance.
2015-05-12 16:35:44 +03:00
char *fingerprint = ssh2_fingerprint(key->alg, key->data);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "submitted key: %s %s",
fingerprint, key->comment);
sfree(fingerprint);
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
if (add234(ssh2keys, key) == key) {
keylist_update();
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
PUT_32BIT(ret, 1);
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
ret[4] = SSH_AGENT_SUCCESS;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH_AGENT_SUCCESS");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
} else {
key->alg->freekey(key->data);
sfree(key->comment);
sfree(key);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
fail_reason = "key already present";
goto failure;
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
}
break;
case SSH1_AGENTC_REMOVE_RSA_IDENTITY:
/*
* Remove from the list and return SSH_AGENT_SUCCESS, or
* perhaps SSH_AGENT_FAILURE if it wasn't in the list to
* start with.
*/
{
struct RSAKey reqkey, *key;
int n;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: SSH1_AGENTC_REMOVE_RSA_IDENTITY");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
n = makekey(p, msgend - p, &reqkey, NULL, 0);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (n < 0) {
fail_reason = "request truncated before public key";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
if (logfn) {
char fingerprint[128];
reqkey.comment = NULL;
rsa_fingerprint(fingerprint, sizeof(fingerprint), &reqkey);
plog(logctx, logfn, "unwanted key: %s", fingerprint);
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
key = find234(rsakeys, &reqkey, NULL);
freebn(reqkey.exponent);
freebn(reqkey.modulus);
PUT_32BIT(ret, 1);
if (key) {
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "found with comment: %s", key->comment);
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
del234(rsakeys, key);
keylist_update();
freersakey(key);
sfree(key);
ret[4] = SSH_AGENT_SUCCESS;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH_AGENT_SUCCESS");
} else {
fail_reason = "key not found";
goto failure;
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
break;
case SSH2_AGENTC_REMOVE_IDENTITY:
/*
* Remove from the list and return SSH_AGENT_SUCCESS, or
* perhaps SSH_AGENT_FAILURE if it wasn't in the list to
* start with.
*/
{
struct ssh2_userkey *key;
struct blob b;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: SSH2_AGENTC_REMOVE_IDENTITY");
if (msgend < p+4) {
fail_reason = "request truncated before public key";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
b.len = toint(GET_32BIT(p));
p += 4;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (b.len < 0 || b.len > msgend - p) {
fail_reason = "request truncated before public key";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
b.blob = p;
p += b.len;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (logfn) {
Centralise SSH-2 key fingerprinting into sshpubk.c. There were ad-hoc functions for fingerprinting a bare key blob in both cmdgen.c and pageant.c, not quite doing the same thing. Also, every SSH-2 public key algorithm in the code base included a dedicated fingerprint() method, which is completely pointless since SSH-2 key fingerprints are computed in an algorithm-independent way (just hash the standard-format public key blob), so each of those methods was just duplicating the work of the public_blob() method with a less general output mechanism. Now sshpubk.c centrally provides an ssh2_fingerprint_blob() function that does all the real work, plus an ssh2_fingerprint() function that wraps it and deals with calling public_blob() to get something to fingerprint. And the fingerprint() method has been completely removed from ssh_signkey and all its implementations, and good riddance.
2015-05-12 16:35:44 +03:00
char *fingerprint = ssh2_fingerprint_blob(b.blob, b.len);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "unwanted key: %s", fingerprint);
sfree(fingerprint);
}
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (!key) {
fail_reason = "key not found";
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
goto failure;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
}
plog(logctx, logfn, "found with comment: %s", key->comment);
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
del234(ssh2keys, key);
keylist_update();
key->alg->freekey(key->data);
sfree(key);
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
PUT_32BIT(ret, 1);
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
ret[4] = SSH_AGENT_SUCCESS;
plog(logctx, logfn, "reply: SSH_AGENT_SUCCESS");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
break;
case SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES:
/*
* Remove all SSH-1 keys. Always returns success.
*/
{
struct RSAKey *rkey;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request:"
" SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
while ((rkey = index234(rsakeys, 0)) != NULL) {
del234(rsakeys, rkey);
freersakey(rkey);
sfree(rkey);
}
keylist_update();
PUT_32BIT(ret, 1);
ret[4] = SSH_AGENT_SUCCESS;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH_AGENT_SUCCESS");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
break;
case SSH2_AGENTC_REMOVE_ALL_IDENTITIES:
/*
* Remove all SSH-2 keys. Always returns success.
*/
{
struct ssh2_userkey *skey;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: SSH2_AGENTC_REMOVE_ALL_IDENTITIES");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
while ((skey = index234(ssh2keys, 0)) != NULL) {
del234(ssh2keys, skey);
skey->alg->freekey(skey->data);
sfree(skey);
}
keylist_update();
PUT_32BIT(ret, 1);
ret[4] = SSH_AGENT_SUCCESS;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH_AGENT_SUCCESS");
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
break;
default:
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "request: unknown message type %d", type);
fail_reason = "unrecognised message";
/* fall through */
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
failure:
/*
* Unrecognised message. Return SSH_AGENT_FAILURE.
*/
PUT_32BIT(ret, 1);
ret[4] = SSH_AGENT_FAILURE;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(logctx, logfn, "reply: SSH_AGENT_FAILURE (%s)", fail_reason);
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
break;
}
*outlen = 4 + GET_32BIT(ret);
return ret;
}
void *pageant_failure_msg(int *outlen)
{
unsigned char *ret = snewn(5, unsigned char);
PUT_32BIT(ret, 1);
ret[4] = SSH_AGENT_FAILURE;
*outlen = 5;
return ret;
}
void pageant_init(void)
{
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
pageant_local = TRUE;
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
rsakeys = newtree234(cmpkeys_rsa);
ssh2keys = newtree234(cmpkeys_ssh2);
}
struct RSAKey *pageant_nth_ssh1_key(int i)
{
return index234(rsakeys, i);
}
struct ssh2_userkey *pageant_nth_ssh2_key(int i)
{
return index234(ssh2keys, i);
}
int pageant_count_ssh1_keys(void)
{
return count234(rsakeys);
}
int pageant_count_ssh2_keys(void)
{
return count234(ssh2keys);
}
int pageant_add_ssh1_key(struct RSAKey *rkey)
{
Fix the inverted return values in pageant_add_ssh*_key(). This would have caused intermittent use-after-free crashes in Windows Pageant, but only with keys added via the primary Pageant's own UI or command line - not keys submitted from another process, because those don't go through the same function.
2015-05-07 20:41:06 +03:00
return add234(rsakeys, rkey) == rkey;
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
int pageant_add_ssh2_key(struct ssh2_userkey *skey)
{
Fix the inverted return values in pageant_add_ssh*_key(). This would have caused intermittent use-after-free crashes in Windows Pageant, but only with keys added via the primary Pageant's own UI or command line - not keys submitted from another process, because those don't go through the same function.
2015-05-07 20:41:06 +03:00
return add234(ssh2keys, skey) == skey;
Move half of Pageant out into a cross-platform source file. I'm aiming for windows/winpgnt.c to only contain the parts of Windows Pageant that are actually to do with handling the Windows API, and for all the actual agent logic to be cross-platform. This commit is a start: I've moved every function and internal variable that was easy to move. But it doesn't get all the way there - there's still a lot of logic in add_keyfile() and get_keylist*() that would be good to move out to cross-platform code, but it's harder because that code is currently quite intertwined with details of Windows OS interfacing such as printing message boxes and passphrase prompts and calling back out to agent_query if the Pageant doing that job isn't the primary one.
2015-05-05 22:16:19 +03:00
}
int pageant_delete_ssh1_key(struct RSAKey *rkey)
{
struct RSAKey *deleted = del234(rsakeys, rkey);
if (!deleted)
return FALSE;
assert(deleted == rkey);
return TRUE;
}
int pageant_delete_ssh2_key(struct ssh2_userkey *skey)
{
struct ssh2_userkey *deleted = del234(ssh2keys, skey);
if (!deleted)
return FALSE;
assert(deleted == skey);
return TRUE;
}
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
/* ----------------------------------------------------------------------
* The agent plug.
*/
/*
* Coroutine macros similar to, but simplified from, those in ssh.c.
*/
#define crBegin(v) { int *crLine = &v; switch(v) { case 0:;
#define crFinish(z) } *crLine = 0; return (z); }
#define crGetChar(c) do \
{ \
while (len == 0) { \
*crLine =__LINE__; return 1; case __LINE__:; \
} \
len--; \
(c) = (unsigned char)*data++; \
} while (0)
struct pageant_conn_state {
const struct plug_function_table *fn;
/* the above variable absolutely *must* be the first in this structure */
Socket connsock;
void *logctx;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
pageant_logfn_t logfn;
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
unsigned char lenbuf[4], pktbuf[AGENT_MAX_MSGLEN];
unsigned len, got;
int real_packet;
int crLine; /* for coroutine in pageant_conn_receive */
};
static int pageant_conn_closing(Plug plug, const char *error_msg,
int error_code, int calling_back)
{
struct pageant_conn_state *pc = (struct pageant_conn_state *)plug;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (error_msg)
plog(pc->logctx, pc->logfn, "%p: error: %s", pc, error_msg);
else
plog(pc->logctx, pc->logfn, "%p: connection closed", pc);
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
sk_close(pc->connsock);
sfree(pc);
return 1;
}
static void pageant_conn_sent(Plug plug, int bufsize)
{
/* struct pageant_conn_state *pc = (struct pageant_conn_state *)plug; */
/*
* We do nothing here, because we expect that there won't be a
* need to throttle and unthrottle the connection to an agent -
* clients will typically not send many requests, and will wait
* until they receive each reply before sending a new request.
*/
}
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
static void pageant_conn_log(void *logctx, const char *fmt, va_list ap)
{
/* Wrapper on pc->logfn that prefixes the connection identifier */
struct pageant_conn_state *pc = (struct pageant_conn_state *)logctx;
char *formatted = dupvprintf(fmt, ap);
plog(pc->logctx, pc->logfn, "%p: %s", pc, formatted);
sfree(formatted);
}
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
static int pageant_conn_receive(Plug plug, int urgent, char *data, int len)
{
struct pageant_conn_state *pc = (struct pageant_conn_state *)plug;
char c;
crBegin(pc->crLine);
while (len > 0) {
pc->got = 0;
while (pc->got < 4) {
crGetChar(c);
pc->lenbuf[pc->got++] = c;
}
pc->len = GET_32BIT(pc->lenbuf);
pc->got = 0;
pc->real_packet = (pc->len < AGENT_MAX_MSGLEN-4);
while (pc->got < pc->len) {
crGetChar(c);
if (pc->real_packet)
pc->pktbuf[pc->got] = c;
pc->got++;
}
{
void *reply;
int replylen;
if (pc->real_packet) {
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
reply = pageant_handle_msg(pc->pktbuf, pc->len, &replylen, pc,
pc->logfn?pageant_conn_log:NULL);
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
} else {
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
plog(pc->logctx, pc->logfn, "%p: overlong message (%u)",
pc, pc->len);
plog(pc->logctx, pc->logfn, "%p: reply: SSH_AGENT_FAILURE "
"(message too long)", pc);
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
reply = pageant_failure_msg(&replylen);
}
sk_write(pc->connsock, reply, replylen);
smemclr(reply, replylen);
}
}
crFinish(1);
}
struct pageant_listen_state {
const struct plug_function_table *fn;
/* the above variable absolutely *must* be the first in this structure */
Socket listensock;
void *logctx;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
pageant_logfn_t logfn;
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
};
static int pageant_listen_closing(Plug plug, const char *error_msg,
int error_code, int calling_back)
{
struct pageant_listen_state *pl = (struct pageant_listen_state *)plug;
Put proper logging into Pageant. Now it actually logs all its requests and responses, the fingerprints of keys mentioned in all messages, and so on. I've also added the -v option, which causes Pageant in any mode to direct that logging information to standard error. In --debug mode, however, the logging output goes to standard output instead (because when debugging, that information changes from a side effect to the thing you actually wanted in the first place :-). An internal tweak: the logging functions now take a va_list rather than an actual variadic argument list, so that I can pass it through several functions.
2015-05-06 21:32:26 +03:00
if (error_msg)
plog(pl->logctx, pl->logfn, "listening socket: error: %s", error_msg);
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
sk_close(pl->listensock);
pl->listensock = NULL;
return 1;
}
static int pageant_listen_accepting(Plug plug,
accept_fn_t constructor, accept_ctx_t ctx)
{
static const struct plug_function_table connection_fn_table = {
NULL, /* no log function, because that's for outgoing connections */
pageant_conn_closing,
pageant_conn_receive,
pageant_conn_sent,
NULL /* no accepting function, because we've already done it */
};
struct pageant_listen_state *pl = (struct pageant_listen_state *)plug;
struct pageant_conn_state *pc;
const char *err;
Log identifying information for the other end of connections. When anyone connects to a PuTTY tool's listening socket - whether it's a user of a local->remote port forwarding, a connection-sharing downstream or a client of Pageant - we'd like to log as much information as we can find out about where the connection came from. To that end, I've implemented a function sk_peer_info() in the socket abstraction, which returns a freeform text string as best it can (or NULL, if it can't get anything at all) describing the thing at the other end of the connection. For TCP connections, this is done using getpeername() to get an IP address and port in the obvious way; for Unix-domain sockets, we attempt SO_PEERCRED (conditionalised on some moderately hairy autoconfery) to get the pid and owner of the peer. I haven't implemented anything for Windows named pipes, but I will if I hear of anything useful.
2015-05-18 15:57:45 +03:00
char *peerinfo;
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
pc = snew(struct pageant_conn_state);
pc->fn = &connection_fn_table;
pc->logfn = pl->logfn;
pc->logctx = pl->logctx;
pc->crLine = 0;
pc->connsock = constructor(ctx, (Plug) pc);
if ((err = sk_socket_error(pc->connsock)) != NULL) {
sk_close(pc->connsock);
sfree(pc);
return TRUE;
}
sk_set_frozen(pc->connsock, 0);
Log identifying information for the other end of connections. When anyone connects to a PuTTY tool's listening socket - whether it's a user of a local->remote port forwarding, a connection-sharing downstream or a client of Pageant - we'd like to log as much information as we can find out about where the connection came from. To that end, I've implemented a function sk_peer_info() in the socket abstraction, which returns a freeform text string as best it can (or NULL, if it can't get anything at all) describing the thing at the other end of the connection. For TCP connections, this is done using getpeername() to get an IP address and port in the obvious way; for Unix-domain sockets, we attempt SO_PEERCRED (conditionalised on some moderately hairy autoconfery) to get the pid and owner of the peer. I haven't implemented anything for Windows named pipes, but I will if I hear of anything useful.
2015-05-18 15:57:45 +03:00
peerinfo = sk_peer_info(pc->connsock);
if (peerinfo) {
plog(pl->logctx, pl->logfn, "%p: new connection from %s",
pc, peerinfo);
} else {
plog(pl->logctx, pl->logfn, "%p: new connection", pc);
}
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
return 0;
}
Clean up Unix Pageant's setup and teardown. I've moved the listening socket setup back to before the lifetime preparations, so in particular we find out that we couldn't bind to the socket _before_ we fork. The only part that really needed to come after lifetime setup was the logging setup, so that's now a separate function called later. Also, the random exit(0)s in silly places like x11_closing have turned into setting a time_to_die flag, so that all clean exits funnel back to the end of main() which at least tries to tidy up a bit afterwards. (Finally, fixed a small bug in testing the return value of waitpid(), which only showed up once we didn't exit(0) after the first wait. Ahem.)
2015-05-07 21:04:25 +03:00
struct pageant_listen_state *pageant_listener_new(void)
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
{
static const struct plug_function_table listener_fn_table = {
NULL, /* no log function, because that's for outgoing connections */
pageant_listen_closing,
NULL, /* no receive function on a listening socket */
NULL, /* no sent function on a listening socket */
pageant_listen_accepting
};
struct pageant_listen_state *pl = snew(struct pageant_listen_state);
pl->fn = &listener_fn_table;
Clean up Unix Pageant's setup and teardown. I've moved the listening socket setup back to before the lifetime preparations, so in particular we find out that we couldn't bind to the socket _before_ we fork. The only part that really needed to come after lifetime setup was the logging setup, so that's now a separate function called later. Also, the random exit(0)s in silly places like x11_closing have turned into setting a time_to_die flag, so that all clean exits funnel back to the end of main() which at least tries to tidy up a bit afterwards. (Finally, fixed a small bug in testing the return value of waitpid(), which only showed up once we didn't exit(0) after the first wait. Ahem.)
2015-05-07 21:04:25 +03:00
pl->logctx = NULL;
pl->logfn = NULL;
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
pl->listensock = NULL;
return pl;
}
void pageant_listener_got_socket(struct pageant_listen_state *pl, Socket sock)
{
pl->listensock = sock;
}
Clean up Unix Pageant's setup and teardown. I've moved the listening socket setup back to before the lifetime preparations, so in particular we find out that we couldn't bind to the socket _before_ we fork. The only part that really needed to come after lifetime setup was the logging setup, so that's now a separate function called later. Also, the random exit(0)s in silly places like x11_closing have turned into setting a time_to_die flag, so that all clean exits funnel back to the end of main() which at least tries to tidy up a bit afterwards. (Finally, fixed a small bug in testing the return value of waitpid(), which only showed up once we didn't exit(0) after the first wait. Ahem.)
2015-05-07 21:04:25 +03:00
void pageant_listener_set_logfn(struct pageant_listen_state *pl,
void *logctx, pageant_logfn_t logfn)
{
pl->logctx = logctx;
pl->logfn = logfn;
}
Cross-platform support for speaking SSH agent protocol on a Socket. The exact nature of the Socket is left up to the front end to decide, so that we can use a Unix-domain socket on Unix and a Windows named pipe on Windows. But the logic of how we receive data and what we send in response is all cross-platform.
2015-05-05 22:16:20 +03:00
void pageant_listener_free(struct pageant_listen_state *pl)
{
if (pl->listensock)
sk_close(pl->listensock);
sfree(pl);
}
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
/* ----------------------------------------------------------------------
* Code to perform agent operations either as a client, or within the
* same process as the running agent.
*/
static tree234 *passphrases = NULL;
/*
* After processing a list of filenames, we want to forget the
* passphrases.
*/
void pageant_forget_passphrases(void)
{
Add a check for NULL in pageant_forget_passphrases(). I've no reason to believe it will _currently_ be called with the 'passphrases' tree not even set up yet, but I managed to get that to happen while playing about with experimental code just now, and it seemed like a good safety check to keep in general.
2015-05-14 11:16:26 +03:00
if (!passphrases) /* in case we never set it up at all */
return;
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
while (count234(passphrases) > 0) {
char *pp = index234(passphrases, 0);
smemclr(pp, strlen(pp));
delpos234(passphrases, 0);
free(pp);
}
}
void *pageant_get_keylist1(int *length)
{
void *ret;
if (!pageant_local) {
unsigned char request[5], *response;
void *vresponse;
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
int resplen;
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
request[4] = SSH1_AGENTC_REQUEST_RSA_IDENTITIES;
Fix faulty length fields in pageant_get_keylist*(). Those must have been wrong _forever_, but because Windows Pageant doesn't mind if the message length is longer than it should be, I've never noticed before. How embarrassing.
2015-05-11 19:52:45 +03:00
PUT_32BIT(request, 1);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
agent_query_synchronous(request, 5, &vresponse, &resplen);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
response = vresponse;
if (resplen < 5 || response[4] != SSH1_AGENT_RSA_IDENTITIES_ANSWER) {
sfree(response);
return NULL;
}
ret = snewn(resplen-5, unsigned char);
memcpy(ret, response+5, resplen-5);
sfree(response);
if (length)
*length = resplen-5;
} else {
ret = pageant_make_keylist1(length);
}
return ret;
}
void *pageant_get_keylist2(int *length)
{
void *ret;
if (!pageant_local) {
unsigned char request[5], *response;
void *vresponse;
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
int resplen;
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
request[4] = SSH2_AGENTC_REQUEST_IDENTITIES;
Fix faulty length fields in pageant_get_keylist*(). Those must have been wrong _forever_, but because Windows Pageant doesn't mind if the message length is longer than it should be, I've never noticed before. How embarrassing.
2015-05-11 19:52:45 +03:00
PUT_32BIT(request, 1);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
agent_query_synchronous(request, 5, &vresponse, &resplen);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
response = vresponse;
if (resplen < 5 || response[4] != SSH2_AGENT_IDENTITIES_ANSWER) {
sfree(response);
return NULL;
}
ret = snewn(resplen-5, unsigned char);
memcpy(ret, response+5, resplen-5);
sfree(response);
if (length)
*length = resplen-5;
} else {
ret = pageant_make_keylist2(length);
}
return ret;
}
int pageant_add_keyfile(Filename *filename, const char *passphrase,
char **retstr)
{
struct RSAKey *rkey = NULL;
struct ssh2_userkey *skey = NULL;
int needs_pass;
int ret;
int attempts;
char *comment;
const char *this_passphrase;
const char *error = NULL;
int type;
if (!passphrases) {
passphrases = newtree234(NULL);
}
*retstr = NULL;
type = key_type(filename);
if (type != SSH_KEYTYPE_SSH1 && type != SSH_KEYTYPE_SSH2) {
*retstr = dupprintf("Couldn't load this key (%s)",
key_type_to_str(type));
return PAGEANT_ACTION_FAILURE;
}
/*
* See if the key is already loaded (in the primary Pageant,
* which may or may not be us).
*/
{
void *blob;
unsigned char *keylist, *p;
int i, nkeys, bloblen, keylistlen;
if (type == SSH_KEYTYPE_SSH1) {
if (!rsakey_pubblob(filename, &blob, &bloblen, NULL, &error)) {
*retstr = dupprintf("Couldn't load private key (%s)", error);
return PAGEANT_ACTION_FAILURE;
}
keylist = pageant_get_keylist1(&keylistlen);
} else {
unsigned char *blob2;
blob = ssh2_userkey_loadpub(filename, NULL, &bloblen,
NULL, &error);
if (!blob) {
*retstr = dupprintf("Couldn't load private key (%s)", error);
return PAGEANT_ACTION_FAILURE;
}
/* For our purposes we want the blob prefixed with its length */
blob2 = snewn(bloblen+4, unsigned char);
PUT_32BIT(blob2, bloblen);
memcpy(blob2 + 4, blob, bloblen);
sfree(blob);
blob = blob2;
keylist = pageant_get_keylist2(&keylistlen);
}
if (keylist) {
if (keylistlen < 4) {
*retstr = dupstr("Received broken key list from agent");
return PAGEANT_ACTION_FAILURE;
}
nkeys = toint(GET_32BIT(keylist));
if (nkeys < 0) {
*retstr = dupstr("Received broken key list from agent");
return PAGEANT_ACTION_FAILURE;
}
p = keylist + 4;
keylistlen -= 4;
for (i = 0; i < nkeys; i++) {
if (!memcmp(blob, p, bloblen)) {
/* Key is already present; we can now leave. */
sfree(keylist);
sfree(blob);
return PAGEANT_ACTION_OK;
}
/* Now skip over public blob */
if (type == SSH_KEYTYPE_SSH1) {
int n = rsa_public_blob_len(p, keylistlen);
if (n < 0) {
*retstr = dupstr("Received broken key list from agent");
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
sfree(keylist);
sfree(blob);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
return PAGEANT_ACTION_FAILURE;
}
p += n;
keylistlen -= n;
} else {
int n;
if (keylistlen < 4) {
*retstr = dupstr("Received broken key list from agent");
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
sfree(keylist);
sfree(blob);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
return PAGEANT_ACTION_FAILURE;
}
Tweak bounds checks in pageant_add_keyfile. When we're going through the response from an SSH agent we asked for a list of keys, and processing the string lengths in the SSH-2 sequence of (public blob, comment) pairs, we were adding 4 to each string length, and although we checked if the result came out to a negative value (if interpreted as a signed integer) or a positive one going beyond the end of the response buffer, we didn't check if it wrapped round to a positive value less than 4. As a result, if an agent returned malformed data sent a length field of 0xFFFFFFFC, the pointer would advance no distance at all through the buffer, and the next iteration of the loop would check the same length field again. (However, this would only consume CPU pointlessly for a limited time, because the outer loop up to 'nkeys' would still terminate sooner or later. Also, I don't think this can sensibly be classed as a serious security hazard - it's arguably a borderline DoS, but it requires a hostile SSH _agent_ if data of that type is to be sent on purpose, and an untrusted SSH agent is not part of the normal security model!)
2017-01-23 23:08:18 +03:00
n = GET_32BIT(p);
p += 4;
keylistlen -= 4;
if (n < 0 || n > keylistlen) {
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
*retstr = dupstr("Received broken key list from agent");
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
sfree(keylist);
sfree(blob);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
return PAGEANT_ACTION_FAILURE;
}
p += n;
keylistlen -= n;
}
/* Now skip over comment field */
{
int n;
if (keylistlen < 4) {
*retstr = dupstr("Received broken key list from agent");
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
sfree(keylist);
sfree(blob);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
return PAGEANT_ACTION_FAILURE;
}
Tweak bounds checks in pageant_add_keyfile. When we're going through the response from an SSH agent we asked for a list of keys, and processing the string lengths in the SSH-2 sequence of (public blob, comment) pairs, we were adding 4 to each string length, and although we checked if the result came out to a negative value (if interpreted as a signed integer) or a positive one going beyond the end of the response buffer, we didn't check if it wrapped round to a positive value less than 4. As a result, if an agent returned malformed data sent a length field of 0xFFFFFFFC, the pointer would advance no distance at all through the buffer, and the next iteration of the loop would check the same length field again. (However, this would only consume CPU pointlessly for a limited time, because the outer loop up to 'nkeys' would still terminate sooner or later. Also, I don't think this can sensibly be classed as a serious security hazard - it's arguably a borderline DoS, but it requires a hostile SSH _agent_ if data of that type is to be sent on purpose, and an untrusted SSH agent is not part of the normal security model!)
2017-01-23 23:08:18 +03:00
n = GET_32BIT(p);
p += 4;
keylistlen -= 4;
if (n < 0 || n > keylistlen) {
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
*retstr = dupstr("Received broken key list from agent");
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
sfree(keylist);
sfree(blob);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
return PAGEANT_ACTION_FAILURE;
}
p += n;
keylistlen -= n;
}
}
sfree(keylist);
}
sfree(blob);
}
error = NULL;
if (type == SSH_KEYTYPE_SSH1)
needs_pass = rsakey_encrypted(filename, &comment);
else
needs_pass = ssh2_userkey_encrypted(filename, &comment);
attempts = 0;
if (type == SSH_KEYTYPE_SSH1)
rkey = snew(struct RSAKey);
/*
* Loop round repeatedly trying to load the key, until we either
* succeed, fail for some serious reason, or run out of
* passphrases to try.
*/
while (1) {
if (needs_pass) {
/*
* If we've been given a passphrase on input, try using
* it. Otherwise, try one from our tree234 of previously
* useful passphrases.
*/
if (passphrase) {
this_passphrase = (attempts == 0 ? passphrase : NULL);
} else {
this_passphrase = (const char *)index234(passphrases, attempts);
}
if (!this_passphrase) {
/*
* Run out of passphrases to try.
*/
*retstr = comment;
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
sfree(rkey);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
return PAGEANT_ACTION_NEED_PP;
}
} else
this_passphrase = "";
if (type == SSH_KEYTYPE_SSH1)
ret = loadrsakey(filename, rkey, this_passphrase, &error);
else {
skey = ssh2_load_userkey(filename, this_passphrase, &error);
if (skey == SSH2_WRONG_PASSPHRASE)
ret = -1;
else if (!skey)
ret = 0;
else
ret = 1;
}
if (ret == 0) {
/*
* Failed to load the key file, for some reason other than
* a bad passphrase.
*/
*retstr = dupstr(error);
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
sfree(rkey);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
return PAGEANT_ACTION_FAILURE;
} else if (ret == 1) {
/*
* Successfully loaded the key file.
*/
break;
} else {
/*
* Passphrase wasn't right; go round again.
*/
attempts++;
}
}
/*
* If we get here, we've succesfully loaded the key into
* rkey/skey, but not yet added it to the agent.
*/
/*
* If the key was successfully decrypted, save the passphrase for
* use with other keys we try to load.
*/
{
char *pp_copy = dupstr(this_passphrase);
if (addpos234(passphrases, pp_copy, 0) != pp_copy) {
/* No need; it was already there. */
smemclr(pp_copy, strlen(pp_copy));
sfree(pp_copy);
}
}
if (comment)
sfree(comment);
if (type == SSH_KEYTYPE_SSH1) {
if (!pageant_local) {
unsigned char *request, *response;
void *vresponse;
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
int reqlen, clen, resplen;
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
clen = strlen(rkey->comment);
reqlen = 4 + 1 + /* length, message type */
4 + /* bit count */
ssh1_bignum_length(rkey->modulus) +
ssh1_bignum_length(rkey->exponent) +
ssh1_bignum_length(rkey->private_exponent) +
ssh1_bignum_length(rkey->iqmp) +
ssh1_bignum_length(rkey->p) +
ssh1_bignum_length(rkey->q) + 4 + clen /* comment */
;
request = snewn(reqlen, unsigned char);
request[4] = SSH1_AGENTC_ADD_RSA_IDENTITY;
reqlen = 5;
PUT_32BIT(request + reqlen, bignum_bitcount(rkey->modulus));
reqlen += 4;
reqlen += ssh1_write_bignum(request + reqlen, rkey->modulus);
reqlen += ssh1_write_bignum(request + reqlen, rkey->exponent);
reqlen +=
ssh1_write_bignum(request + reqlen,
rkey->private_exponent);
reqlen += ssh1_write_bignum(request + reqlen, rkey->iqmp);
reqlen += ssh1_write_bignum(request + reqlen, rkey->p);
reqlen += ssh1_write_bignum(request + reqlen, rkey->q);
PUT_32BIT(request + reqlen, clen);
memcpy(request + reqlen + 4, rkey->comment, clen);
reqlen += 4 + clen;
PUT_32BIT(request, reqlen - 4);
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
agent_query_synchronous(request, reqlen, &vresponse, &resplen);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
response = vresponse;
if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) {
*retstr = dupstr("The already running Pageant "
"refused to add the key.");
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
freersakey(rkey);
sfree(rkey);
sfree(request);
sfree(response);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
return PAGEANT_ACTION_FAILURE;
}
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
freersakey(rkey);
sfree(rkey);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
sfree(request);
sfree(response);
} else {
if (!pageant_add_ssh1_key(rkey)) {
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
freersakey(rkey);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
sfree(rkey); /* already present, don't waste RAM */
}
}
} else {
if (!pageant_local) {
unsigned char *request, *response;
void *vresponse;
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
int reqlen, alglen, clen, keybloblen, resplen;
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
alglen = strlen(skey->alg->name);
clen = strlen(skey->comment);
keybloblen = skey->alg->openssh_fmtkey(skey->data, NULL, 0);
reqlen = 4 + 1 + /* length, message type */
4 + alglen + /* algorithm name */
keybloblen + /* key data */
4 + clen /* comment */
;
request = snewn(reqlen, unsigned char);
request[4] = SSH2_AGENTC_ADD_IDENTITY;
reqlen = 5;
PUT_32BIT(request + reqlen, alglen);
reqlen += 4;
memcpy(request + reqlen, skey->alg->name, alglen);
reqlen += alglen;
reqlen += skey->alg->openssh_fmtkey(skey->data,
request + reqlen,
keybloblen);
PUT_32BIT(request + reqlen, clen);
memcpy(request + reqlen + 4, skey->comment, clen);
reqlen += clen + 4;
PUT_32BIT(request, reqlen - 4);
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
agent_query_synchronous(request, reqlen, &vresponse, &resplen);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
response = vresponse;
if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) {
*retstr = dupstr("The already running Pageant "
"refused to add the key.");
Add an assortment of missing frees and closes. Coverity's resource-leak checker is on the ball as usual.
2017-02-14 23:42:26 +03:00
sfree(request);
sfree(response);
Pageant: factor out cross-platform parts of add_keyfile(). I've now centralised into pageant.c all the logic about trying to load keys of any type, with no passphrase or with the passphrases used in previous key-loading actions or with a new user-supplied passphrase, whether we're the main Pageant process ourself or are talking to another one as a client. The only part of that code remaining in winpgnt.c is the user interaction via dialog boxes, which of course is the part that will need to be done differently on other platforms.
2015-05-11 17:06:25 +03:00
return PAGEANT_ACTION_FAILURE;
}
sfree(request);
sfree(response);
} else {
if (!pageant_add_ssh2_key(skey)) {
skey->alg->freekey(skey->data);
sfree(skey); /* already present, don't waste RAM */
}
}
}
return PAGEANT_ACTION_OK;
}
Unix Pageant: first draft of -l key list option. It doesn't look very pretty at the moment, but it lists the keys and gets the fingerprints right.
2015-05-11 20:34:45 +03:00
int pageant_enum_keys(pageant_key_enum_fn_t callback, void *callback_ctx,
char **retstr)
{
unsigned char *keylist, *p;
int i, nkeys, keylistlen;
char *comment;
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
2015-05-12 15:27:33 +03:00
struct pageant_pubkey cbkey;
Unix Pageant: first draft of -l key list option. It doesn't look very pretty at the moment, but it lists the keys and gets the fingerprints right.
2015-05-11 20:34:45 +03:00
keylist = pageant_get_keylist1(&keylistlen);
if (keylistlen < 4) {
*retstr = dupstr("Received broken SSH-1 key list from agent");
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
nkeys = toint(GET_32BIT(keylist));
if (nkeys < 0) {
*retstr = dupstr("Received broken SSH-1 key list from agent");
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
p = keylist + 4;
keylistlen -= 4;
for (i = 0; i < nkeys; i++) {
struct RSAKey rkey;
char fingerprint[128];
int n;
/* public blob and fingerprint */
memset(&rkey, 0, sizeof(rkey));
n = makekey(p, keylistlen, &rkey, NULL, 0);
if (n < 0 || n > keylistlen) {
freersakey(&rkey);
*retstr = dupstr("Received broken SSH-1 key list from agent");
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
p += n, keylistlen -= n;
rsa_fingerprint(fingerprint, sizeof(fingerprint), &rkey);
/* comment */
if (keylistlen < 4) {
*retstr = dupstr("Received broken SSH-1 key list from agent");
freersakey(&rkey);
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
n = toint(GET_32BIT(p));
p += 4, keylistlen -= 4;
if (n < 0 || keylistlen < n) {
*retstr = dupstr("Received broken SSH-1 key list from agent");
freersakey(&rkey);
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
comment = dupprintf("%.*s", (int)n, (const char *)p);
p += n, keylistlen -= n;
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
2015-05-12 15:27:33 +03:00
cbkey.blob = rsa_public_blob(&rkey, &cbkey.bloblen);
Unix Pageant: provide public-key extraction options. I've decided against implementing an option exactly analogous to 'ssh-add -L' (printing the full public key of everything in the agent). Instead, you can identify a specific key to display in full, by any of the same means -d lets you use, and then print it in either of the public key formats we support.
2015-05-12 16:48:32 +03:00
cbkey.comment = comment;
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
2015-05-12 15:27:33 +03:00
cbkey.ssh_version = 1;
callback(callback_ctx, fingerprint, comment, &cbkey);
sfree(cbkey.blob);
Unix Pageant: first draft of -l key list option. It doesn't look very pretty at the moment, but it lists the keys and gets the fingerprints right.
2015-05-11 20:34:45 +03:00
freersakey(&rkey);
sfree(comment);
}
sfree(keylist);
if (keylistlen != 0) {
*retstr = dupstr("Received broken SSH-1 key list from agent");
return PAGEANT_ACTION_FAILURE;
}
keylist = pageant_get_keylist2(&keylistlen);
if (keylistlen < 4) {
*retstr = dupstr("Received broken SSH-2 key list from agent");
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
nkeys = toint(GET_32BIT(keylist));
if (nkeys < 0) {
*retstr = dupstr("Received broken SSH-2 key list from agent");
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
p = keylist + 4;
keylistlen -= 4;
for (i = 0; i < nkeys; i++) {
char *fingerprint;
int n;
/* public blob */
if (keylistlen < 4) {
*retstr = dupstr("Received broken SSH-2 key list from agent");
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
n = toint(GET_32BIT(p));
p += 4, keylistlen -= 4;
if (n < 0 || keylistlen < n) {
*retstr = dupstr("Received broken SSH-2 key list from agent");
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
Centralise SSH-2 key fingerprinting into sshpubk.c. There were ad-hoc functions for fingerprinting a bare key blob in both cmdgen.c and pageant.c, not quite doing the same thing. Also, every SSH-2 public key algorithm in the code base included a dedicated fingerprint() method, which is completely pointless since SSH-2 key fingerprints are computed in an algorithm-independent way (just hash the standard-format public key blob), so each of those methods was just duplicating the work of the public_blob() method with a less general output mechanism. Now sshpubk.c centrally provides an ssh2_fingerprint_blob() function that does all the real work, plus an ssh2_fingerprint() function that wraps it and deals with calling public_blob() to get something to fingerprint. And the fingerprint() method has been completely removed from ssh_signkey and all its implementations, and good riddance.
2015-05-12 16:35:44 +03:00
fingerprint = ssh2_fingerprint_blob(p, n);
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
2015-05-12 15:27:33 +03:00
cbkey.blob = p;
cbkey.bloblen = n;
Unix Pageant: first draft of -l key list option. It doesn't look very pretty at the moment, but it lists the keys and gets the fingerprints right.
2015-05-11 20:34:45 +03:00
p += n, keylistlen -= n;
/* comment */
if (keylistlen < 4) {
*retstr = dupstr("Received broken SSH-2 key list from agent");
sfree(fingerprint);
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
n = toint(GET_32BIT(p));
p += 4, keylistlen -= 4;
if (n < 0 || keylistlen < n) {
*retstr = dupstr("Received broken SSH-2 key list from agent");
sfree(fingerprint);
sfree(keylist);
return PAGEANT_ACTION_FAILURE;
}
comment = dupprintf("%.*s", (int)n, (const char *)p);
p += n, keylistlen -= n;
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
2015-05-12 15:27:33 +03:00
cbkey.ssh_version = 2;
Unix Pageant: provide public-key extraction options. I've decided against implementing an option exactly analogous to 'ssh-add -L' (printing the full public key of everything in the agent). Instead, you can identify a specific key to display in full, by any of the same means -d lets you use, and then print it in either of the public key formats we support.
2015-05-12 16:48:32 +03:00
cbkey.comment = comment;
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
2015-05-12 15:27:33 +03:00
callback(callback_ctx, fingerprint, comment, &cbkey);
Unix Pageant: first draft of -l key list option. It doesn't look very pretty at the moment, but it lists the keys and gets the fingerprints right.
2015-05-11 20:34:45 +03:00
sfree(fingerprint);
sfree(comment);
}
sfree(keylist);
if (keylistlen != 0) {
*retstr = dupstr("Received broken SSH-1 key list from agent");
return PAGEANT_ACTION_FAILURE;
}
return PAGEANT_ACTION_OK;
}
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
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int pageant_delete_key(struct pageant_pubkey *key, char **retstr)
{
unsigned char *request, *response;
int reqlen, resplen, ret;
void *vresponse;
if (key->ssh_version == 1) {
reqlen = 5 + key->bloblen;
request = snewn(reqlen, unsigned char);
PUT_32BIT(request, reqlen - 4);
request[4] = SSH1_AGENTC_REMOVE_RSA_IDENTITY;
memcpy(request + 5, key->blob, key->bloblen);
} else {
reqlen = 9 + key->bloblen;
request = snewn(reqlen, unsigned char);
PUT_32BIT(request, reqlen - 4);
request[4] = SSH2_AGENTC_REMOVE_IDENTITY;
PUT_32BIT(request + 5, key->bloblen);
memcpy(request + 9, key->blob, key->bloblen);
}
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
agent_query_synchronous(request, reqlen, &vresponse, &resplen);
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
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response = vresponse;
if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) {
*retstr = dupstr("Agent failed to delete key");
ret = PAGEANT_ACTION_FAILURE;
} else {
*retstr = NULL;
ret = PAGEANT_ACTION_OK;
}
sfree(request);
sfree(response);
return ret;
}
Unix Pageant: support -D, to delete all keys.
2015-05-12 16:55:44 +03:00
int pageant_delete_all_keys(char **retstr)
{
unsigned char request[5], *response;
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
int reqlen, resplen, success;
Unix Pageant: support -D, to delete all keys.
2015-05-12 16:55:44 +03:00
void *vresponse;
PUT_32BIT(request, 1);
request[4] = SSH2_AGENTC_REMOVE_ALL_IDENTITIES;
reqlen = 5;
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
agent_query_synchronous(request, reqlen, &vresponse, &resplen);
Unix Pageant: support -D, to delete all keys.
2015-05-12 16:55:44 +03:00
response = vresponse;
success = (resplen >= 4 && response[4] == SSH_AGENT_SUCCESS);
sfree(response);
if (!success) {
*retstr = dupstr("Agent failed to delete SSH-2 keys");
return PAGEANT_ACTION_FAILURE;
}
PUT_32BIT(request, 1);
request[4] = SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES;
reqlen = 5;
Make asynchronous agent_query() requests cancellable. Now, instead of returning a boolean indicating whether the query has completed or is still pending, agent_query() returns NULL to indicate that the query _has_ completed, and if it hasn't, it returns a pointer to a context structure representing the pending query, so that the latter can be used to cancel the query if (for example) you later decide you need to free the thing its callback was using as a context. This should fix a potential race-condition segfault if you overload an agent forwarding channel and then close it abruptly. (Which nobody will be doing for sensible purposes, of course! But I ran across this while stress-testing other aspects of agent forwarding.)
2017-01-29 23:24:15 +03:00
agent_query_synchronous(request, reqlen, &vresponse, &resplen);
Unix Pageant: support -D, to delete all keys.
2015-05-12 16:55:44 +03:00
response = vresponse;
success = (resplen >= 4 && response[4] == SSH_AGENT_SUCCESS);
sfree(response);
if (!success) {
*retstr = dupstr("Agent failed to delete SSH-1 keys");
return PAGEANT_ACTION_FAILURE;
}
*retstr = NULL;
return PAGEANT_ACTION_OK;
}
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
2015-05-12 15:27:33 +03:00
struct pageant_pubkey *pageant_pubkey_copy(struct pageant_pubkey *key)
{
struct pageant_pubkey *ret = snew(struct pageant_pubkey);
ret->blob = snewn(key->bloblen, unsigned char);
memcpy(ret->blob, key->blob, key->bloblen);
ret->bloblen = key->bloblen;
Unix Pageant: provide public-key extraction options. I've decided against implementing an option exactly analogous to 'ssh-add -L' (printing the full public key of everything in the agent). Instead, you can identify a specific key to display in full, by any of the same means -d lets you use, and then print it in either of the public key formats we support.
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ret->comment = key->comment ? dupstr(key->comment) : NULL;
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
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ret->ssh_version = key->ssh_version;
return ret;
}
void pageant_pubkey_free(struct pageant_pubkey *key)
{
Unix Pageant: provide public-key extraction options. I've decided against implementing an option exactly analogous to 'ssh-add -L' (printing the full public key of everything in the agent). Instead, you can identify a specific key to display in full, by any of the same means -d lets you use, and then print it in either of the public key formats we support.
2015-05-12 16:48:32 +03:00
sfree(key->comment);
Unix Pageant: support -d, to delete a key from the agent. Unlike ssh-add, we can identify the key by its comment or by a prefix of its fingerprint as well as using a public key file on disk. The string given as an argument to -d is interpreted as whichever of those things matches; disambiguating prefixes are available if needed.
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sfree(key->blob);
sfree(key);
}