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pjs/security/nss/lib/ssl/sslsock.c

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C
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/*
* vtables (and methods that call through them) for the 4 types of
* SSLSockets supported. Only one type is still supported.
* Various other functions.
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1994-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Dr Stephen Henson <stephen.henson@gemplus.com>
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*
* $Id: sslsock.c,v 1.28 2002-04-04 00:14:11 nelsonb%netscape.com Exp $
*/
#include "seccomon.h"
#include "cert.h"
#include "keyhi.h"
#include "ssl.h"
#include "sslimpl.h"
#include "sslproto.h"
#include "nspr.h"
#define SET_ERROR_CODE /* reminder */
struct cipherPolicyStr {
int cipher;
unsigned char export; /* policy value for export policy */
unsigned char france; /* policy value for france policy */
};
typedef struct cipherPolicyStr cipherPolicy;
/* This table contains two preconfigured policies: Export and France.
** It is used only by the functions SSL_SetDomesticPolicy,
** SSL_SetExportPolicy, and SSL_SetFrancyPolicy.
** Order of entries is not important.
*/
static cipherPolicy ssl_ciphers[] = { /* Export France */
{ SSL_EN_RC4_128_WITH_MD5, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_EN_RC4_128_EXPORT40_WITH_MD5, SSL_ALLOWED, SSL_ALLOWED },
{ SSL_EN_RC2_128_CBC_WITH_MD5, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_EN_RC2_128_CBC_EXPORT40_WITH_MD5, SSL_ALLOWED, SSL_ALLOWED },
{ SSL_EN_DES_64_CBC_WITH_MD5, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_EN_DES_192_EDE3_CBC_WITH_MD5, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_FORTEZZA_DMS_WITH_FORTEZZA_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_FORTEZZA_DMS_WITH_RC4_128_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_RSA_WITH_RC4_128_MD5, SSL_RESTRICTED, SSL_NOT_ALLOWED },
{ SSL_RSA_WITH_RC4_128_SHA, SSL_RESTRICTED, SSL_NOT_ALLOWED },
{ SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_RSA_WITH_3DES_EDE_CBC_SHA, SSL_RESTRICTED, SSL_NOT_ALLOWED },
{ SSL_RSA_FIPS_WITH_DES_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_RSA_WITH_DES_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_RSA_EXPORT_WITH_RC4_40_MD5, SSL_ALLOWED, SSL_ALLOWED },
{ SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5, SSL_ALLOWED, SSL_ALLOWED },
{ SSL_FORTEZZA_DMS_WITH_NULL_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_DHE_RSA_WITH_DES_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_DHE_DSS_WITH_DES_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ TLS_DHE_DSS_WITH_RC4_128_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ SSL_RSA_WITH_NULL_MD5, SSL_ALLOWED, SSL_ALLOWED },
{ TLS_DHE_DSS_WITH_AES_128_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ TLS_DHE_RSA_WITH_AES_128_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ TLS_RSA_WITH_AES_128_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ TLS_DHE_DSS_WITH_AES_256_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ TLS_DHE_RSA_WITH_AES_256_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ TLS_RSA_WITH_AES_256_CBC_SHA, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED },
{ TLS_RSA_EXPORT1024_WITH_DES_CBC_SHA, SSL_ALLOWED, SSL_NOT_ALLOWED },
{ TLS_RSA_EXPORT1024_WITH_RC4_56_SHA, SSL_ALLOWED, SSL_NOT_ALLOWED },
{ 0, SSL_NOT_ALLOWED, SSL_NOT_ALLOWED }
};
static const sslSocketOps ssl_default_ops = { /* No SSL. */
ssl_DefConnect,
NULL,
ssl_DefBind,
ssl_DefListen,
ssl_DefShutdown,
ssl_DefClose,
ssl_DefRecv,
ssl_DefSend,
ssl_DefRead,
ssl_DefWrite,
ssl_DefGetpeername,
ssl_DefGetsockname
};
static const sslSocketOps ssl_secure_ops = { /* SSL. */
ssl_SecureConnect,
NULL,
ssl_DefBind,
ssl_DefListen,
ssl_SecureShutdown,
ssl_SecureClose,
ssl_SecureRecv,
ssl_SecureSend,
ssl_SecureRead,
ssl_SecureWrite,
ssl_DefGetpeername,
ssl_DefGetsockname
};
/*
** default settings for socket enables
*/
static sslOptions ssl_defaults = {
PR_TRUE, /* useSecurity */
PR_FALSE, /* useSocks */
PR_FALSE, /* requestCertificate */
2, /* requireCertificate */
PR_FALSE, /* handshakeAsClient */
PR_FALSE, /* handshakeAsServer */
PR_TRUE, /* enableSSL2 */
PR_TRUE, /* enableSSL3 */
PR_TRUE, /* enableTLS */ /* now defaults to on in NSS 3.0 */
PR_FALSE, /* noCache */
PR_FALSE, /* fdx */
PR_TRUE, /* v2CompatibleHello */
PR_TRUE, /* detectRollBack */
};
sslSessionIDLookupFunc ssl_sid_lookup;
sslSessionIDCacheFunc ssl_sid_cache;
sslSessionIDUncacheFunc ssl_sid_uncache;
static PRBool ssl_inited = PR_FALSE;
static PRDescIdentity ssl_layer_id;
int ssl_lock_readers = 1; /* default true. */
char ssl_debug;
char ssl_trace;
/* forward declarations. */
static sslSocket *ssl_NewSocket(void);
static PRStatus ssl_PushIOLayer(sslSocket *ns, PRFileDesc *stack,
PRDescIdentity id);
/************************************************************************/
/*
** Lookup a socket structure from a file descriptor.
** Only functions called through the PRIOMethods table should use this.
** Other app-callable functions should use ssl_FindSocket.
*/
static sslSocket *
ssl_GetPrivate(PRFileDesc *fd)
{
sslSocket *ss;
PORT_Assert(fd != NULL);
PORT_Assert(fd->methods->file_type == PR_DESC_LAYERED);
PORT_Assert(fd->identity == ssl_layer_id);
ss = (sslSocket *)fd->secret;
ss->fd = fd;
return ss;
}
sslSocket *
ssl_FindSocket(PRFileDesc *fd)
{
PRFileDesc *layer;
sslSocket *ss;
PORT_Assert(fd != NULL);
PORT_Assert(ssl_layer_id != 0);
layer = PR_GetIdentitiesLayer(fd, ssl_layer_id);
if (layer == NULL) {
PORT_SetError(PR_BAD_DESCRIPTOR_ERROR);
return NULL;
}
ss = (sslSocket *)layer->secret;
ss->fd = layer;
return ss;
}
sslSocket *
ssl_DupSocket(sslSocket *os)
{
sslSocket *ss;
SECStatus rv;
ss = ssl_NewSocket();
if (ss) {
ss->useSocks = PR_FALSE;
ss->useSecurity = os->useSecurity;
ss->requestCertificate = os->requestCertificate;
ss->requireCertificate = os->requireCertificate;
ss->handshakeAsClient = os->handshakeAsClient;
ss->handshakeAsServer = os->handshakeAsServer;
ss->enableSSL2 = os->enableSSL2;
ss->enableSSL3 = os->enableSSL3;
ss->enableTLS = os->enableTLS;
ss->noCache = os->noCache;
ss->fdx = os->fdx;
ss->v2CompatibleHello = os->v2CompatibleHello;
ss->detectRollBack = os->detectRollBack;
ss->peerID = !os->peerID ? NULL : PORT_Strdup(os->peerID);
ss->url = !os->url ? NULL : PORT_Strdup(os->url);
ss->ops = os->ops;
ss->rTimeout = os->rTimeout;
ss->wTimeout = os->wTimeout;
ss->cTimeout = os->cTimeout;
ss->dbHandle = os->dbHandle;
/* copy ssl2&3 policy & prefs, even if it's not selected (yet) */
ss->allowedByPolicy = os->allowedByPolicy;
ss->maybeAllowedByPolicy= os->maybeAllowedByPolicy;
ss->chosenPreference = os->chosenPreference;
PORT_Memcpy(ss->cipherSuites, os->cipherSuites, sizeof os->cipherSuites);
if (os->cipherSpecs) {
ss->cipherSpecs = (unsigned char*)PORT_Alloc(os->sizeCipherSpecs);
if (ss->cipherSpecs)
PORT_Memcpy(ss->cipherSpecs, os->cipherSpecs,
os->sizeCipherSpecs);
ss->sizeCipherSpecs = os->sizeCipherSpecs;
ss->preferredCipher = os->preferredCipher;
} else {
ss->cipherSpecs = NULL; /* produced lazily */
ss->sizeCipherSpecs = 0;
ss->preferredCipher = NULL;
}
if (ss->useSecurity) {
/* This int should be SSLKEAType, but CC on Irix complains,
* during the for loop.
*/
int i;
sslServerCerts * oc = os->serverCerts;
sslServerCerts * sc = ss->serverCerts;
for (i=kt_null; i < kt_kea_size; i++, oc++, sc++) {
if (oc->serverCert && oc->serverCertChain) {
sc->serverCert = CERT_DupCertificate(oc->serverCert);
sc->serverCertChain = CERT_DupCertList(oc->serverCertChain);
if (!sc->serverCertChain)
goto loser;
} else {
sc->serverCert = NULL;
sc->serverCertChain = NULL;
}
sc->serverKey = oc->serverKey ?
SECKEY_CopyPrivateKey(oc->serverKey) : NULL;
if (oc->serverKey && !sc->serverKey)
goto loser;
sc->serverKeyBits = oc->serverKeyBits;
}
ss->stepDownKeyPair = !os->stepDownKeyPair ? NULL :
ssl3_GetKeyPairRef(os->stepDownKeyPair);
/*
* XXX the preceeding CERT_ and SECKEY_ functions can fail and return NULL.
* XXX We should detect this, and not just march on with NULL pointers.
*/
ss->authCertificate = os->authCertificate;
ss->authCertificateArg = os->authCertificateArg;
ss->getClientAuthData = os->getClientAuthData;
ss->getClientAuthDataArg = os->getClientAuthDataArg;
ss->handleBadCert = os->handleBadCert;
ss->badCertArg = os->badCertArg;
ss->handshakeCallback = os->handshakeCallback;
ss->handshakeCallbackData = os->handshakeCallbackData;
ss->pkcs11PinArg = os->pkcs11PinArg;
/* Create security data */
rv = ssl_CopySecurityInfo(ss, os);
if (rv != SECSuccess) {
goto loser;
}
}
}
return ss;
loser:
ssl_FreeSocket(ss);
return NULL;
}
static void
ssl_DestroyLocks(sslSocket *ss)
{
/* Destroy locks. */
if (ss->firstHandshakeLock) {
PZ_DestroyMonitor(ss->firstHandshakeLock);
ss->firstHandshakeLock = NULL;
}
if (ss->ssl3HandshakeLock) {
PZ_DestroyMonitor(ss->ssl3HandshakeLock);
ss->ssl3HandshakeLock = NULL;
}
if (ss->specLock) {
NSSRWLock_Destroy(ss->specLock);
ss->specLock = NULL;
}
if (ss->recvLock) {
PZ_DestroyLock(ss->recvLock);
ss->recvLock = NULL;
}
if (ss->sendLock) {
PZ_DestroyLock(ss->sendLock);
ss->sendLock = NULL;
}
if (ss->xmitBufLock) {
PZ_DestroyMonitor(ss->xmitBufLock);
ss->xmitBufLock = NULL;
}
if (ss->recvBufLock) {
PZ_DestroyMonitor(ss->recvBufLock);
ss->recvBufLock = NULL;
}
}
/* Caller holds any relevant locks */
static void
ssl_DestroySocketContents(sslSocket *ss)
{
/* "i" should be of type SSLKEAType, but CC on IRIX complains during
* the for loop.
*/
int i;
/* Free up socket */
ssl_DestroySecurityInfo(&ss->sec);
ssl3_DestroySSL3Info(ss->ssl3);
PORT_Free(ss->saveBuf.buf);
PORT_Free(ss->pendingBuf.buf);
ssl_DestroyGather(&ss->gs);
if (ss->peerID != NULL)
PORT_Free(ss->peerID);
if (ss->url != NULL)
PORT_Free((void *)ss->url); /* CONST */
if (ss->cipherSpecs) {
PORT_Free(ss->cipherSpecs);
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0;
}
/* Clean up server configuration */
for (i=kt_null; i < kt_kea_size; i++) {
sslServerCerts * sc = ss->serverCerts + i;
if (sc->serverCert != NULL)
CERT_DestroyCertificate(sc->serverCert);
if (sc->serverCertChain != NULL)
CERT_DestroyCertificateList(sc->serverCertChain);
if (sc->serverKey != NULL)
SECKEY_DestroyPrivateKey(sc->serverKey);
}
if (ss->stepDownKeyPair) {
ssl3_FreeKeyPair(ss->stepDownKeyPair);
ss->stepDownKeyPair = NULL;
}
}
/*
* free an sslSocket struct, and all the stuff that hangs off of it
*/
void
ssl_FreeSocket(sslSocket *ss)
{
#ifdef DEBUG
sslSocket *fs;
sslSocket lSock;
#endif
/* Get every lock you can imagine!
** Caller already holds these:
** SSL_LOCK_READER(ss);
** SSL_LOCK_WRITER(ss);
*/
ssl_Get1stHandshakeLock(ss);
ssl_GetRecvBufLock(ss);
ssl_GetSSL3HandshakeLock(ss);
ssl_GetXmitBufLock(ss);
ssl_GetSpecWriteLock(ss);
#ifdef DEBUG
fs = &lSock;
*fs = *ss; /* Copy the old socket structure, */
PORT_Memset(ss, 0x1f, sizeof *ss); /* then blast the old struct ASAP. */
#else
#define fs ss
#endif
ssl_DestroySocketContents(fs);
/* Release all the locks acquired above. */
SSL_UNLOCK_READER(fs);
SSL_UNLOCK_WRITER(fs);
ssl_Release1stHandshakeLock(fs);
ssl_ReleaseRecvBufLock(fs);
ssl_ReleaseSSL3HandshakeLock(fs);
ssl_ReleaseXmitBufLock(fs);
ssl_ReleaseSpecWriteLock(fs);
ssl_DestroyLocks(fs);
PORT_Free(ss); /* free the caller's copy, not ours. */
return;
}
#undef fs
/************************************************************************/
SECStatus
ssl_EnableNagleDelay(sslSocket *ss, PRBool enabled)
{
PRFileDesc * osfd = ss->fd->lower;
int rv;
PRSocketOptionData opt;
opt.option = PR_SockOpt_NoDelay;
opt.value.no_delay = (PRBool)!enabled;
rv = osfd->methods->setsocketoption(osfd, &opt);
return rv;
}
static void
ssl_ChooseOps(sslSocket *ss)
{
ss->ops = ss->useSecurity ? &ssl_secure_ops : &ssl_default_ops;
}
/* Called from SSL_Enable (immediately below) */
static SECStatus
PrepareSocket(sslSocket *ss)
{
SECStatus rv = SECSuccess;
ssl_ChooseOps(ss);
return rv;
}
SECStatus
SSL_Enable(PRFileDesc *fd, int which, PRBool on)
{
return SSL_OptionSet(fd, which, on);
}
SECStatus
SSL_OptionSet(PRFileDesc *fd, PRInt32 which, PRBool on)
{
sslSocket *ss = ssl_FindSocket(fd);
SECStatus rv = SECSuccess;
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in Enable", SSL_GETPID(), fd));
return SECFailure;
}
ssl_Get1stHandshakeLock(ss);
ssl_GetSSL3HandshakeLock(ss);
switch (which) {
case SSL_SOCKS:
ss->useSocks = PR_FALSE;
rv = PrepareSocket(ss);
if (on) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
break;
case SSL_SECURITY:
ss->useSecurity = on;
rv = PrepareSocket(ss);
break;
case SSL_REQUEST_CERTIFICATE:
ss->requestCertificate = on;
break;
case SSL_REQUIRE_CERTIFICATE:
ss->requireCertificate = on;
break;
case SSL_HANDSHAKE_AS_CLIENT:
if ( ss->handshakeAsServer && on ) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
break;
}
ss->handshakeAsClient = on;
break;
case SSL_HANDSHAKE_AS_SERVER:
if ( ss->handshakeAsClient && on ) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
break;
}
ss->handshakeAsServer = on;
break;
case SSL_ENABLE_TLS:
ss->enableTLS = on;
ss->preferredCipher = NULL;
if (ss->cipherSpecs) {
PORT_Free(ss->cipherSpecs);
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0;
}
break;
case SSL_ENABLE_SSL3:
ss->enableSSL3 = on;
ss->preferredCipher = NULL;
if (ss->cipherSpecs) {
PORT_Free(ss->cipherSpecs);
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0;
}
break;
case SSL_ENABLE_SSL2:
ss->enableSSL2 = on;
if (on) {
ss->v2CompatibleHello = on;
}
ss->preferredCipher = NULL;
if (ss->cipherSpecs) {
PORT_Free(ss->cipherSpecs);
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0;
}
break;
case SSL_NO_CACHE:
ss->noCache = on;
break;
case SSL_ENABLE_FDX:
ss->fdx = on;
break;
case SSL_V2_COMPATIBLE_HELLO:
ss->v2CompatibleHello = on;
if (!on) {
ss->enableSSL2 = on;
}
break;
case SSL_ROLLBACK_DETECTION:
ss->detectRollBack = on;
break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_Release1stHandshakeLock(ss);
return rv;
}
SECStatus
SSL_OptionGet(PRFileDesc *fd, PRInt32 which, PRBool *pOn)
{
sslSocket *ss = ssl_FindSocket(fd);
SECStatus rv = SECSuccess;
PRBool on = PR_FALSE;
if (!pOn) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in Enable", SSL_GETPID(), fd));
*pOn = PR_FALSE;
return SECFailure;
}
ssl_Get1stHandshakeLock(ss);
ssl_GetSSL3HandshakeLock(ss);
switch (which) {
case SSL_SOCKS: on = PR_FALSE; break;
case SSL_SECURITY: on = ss->useSecurity; break;
case SSL_REQUEST_CERTIFICATE: on = ss->requestCertificate; break;
case SSL_REQUIRE_CERTIFICATE: on = ss->requireCertificate; break;
case SSL_HANDSHAKE_AS_CLIENT: on = ss->handshakeAsClient; break;
case SSL_HANDSHAKE_AS_SERVER: on = ss->handshakeAsServer; break;
case SSL_ENABLE_TLS: on = ss->enableTLS; break;
case SSL_ENABLE_SSL3: on = ss->enableSSL3; break;
case SSL_ENABLE_SSL2: on = ss->enableSSL2; break;
case SSL_NO_CACHE: on = ss->noCache; break;
case SSL_ENABLE_FDX: on = ss->fdx; break;
case SSL_V2_COMPATIBLE_HELLO: on = ss->v2CompatibleHello; break;
case SSL_ROLLBACK_DETECTION: on = ss->detectRollBack; break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_Release1stHandshakeLock(ss);
*pOn = on;
return rv;
}
SECStatus
SSL_OptionGetDefault(PRInt32 which, PRBool *pOn)
{
SECStatus rv = SECSuccess;
PRBool on = PR_FALSE;
if (!pOn) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
switch (which) {
case SSL_SOCKS: on = PR_FALSE; break;
case SSL_SECURITY: on = ssl_defaults.useSecurity; break;
case SSL_REQUEST_CERTIFICATE: on = ssl_defaults.requestCertificate; break;
case SSL_REQUIRE_CERTIFICATE: on = ssl_defaults.requireCertificate; break;
case SSL_HANDSHAKE_AS_CLIENT: on = ssl_defaults.handshakeAsClient; break;
case SSL_HANDSHAKE_AS_SERVER: on = ssl_defaults.handshakeAsServer; break;
case SSL_ENABLE_TLS: on = ssl_defaults.enableTLS; break;
case SSL_ENABLE_SSL3: on = ssl_defaults.enableSSL3; break;
case SSL_ENABLE_SSL2: on = ssl_defaults.enableSSL2; break;
case SSL_NO_CACHE: on = ssl_defaults.noCache; break;
case SSL_ENABLE_FDX: on = ssl_defaults.fdx; break;
case SSL_V2_COMPATIBLE_HELLO: on = ssl_defaults.v2CompatibleHello; break;
case SSL_ROLLBACK_DETECTION: on = ssl_defaults.detectRollBack; break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
*pOn = on;
return rv;
}
/* XXX Use Global Lock to protect this stuff. */
SECStatus
SSL_EnableDefault(int which, PRBool on)
{
return SSL_OptionSetDefault(which, on);
}
SECStatus
SSL_OptionSetDefault(PRInt32 which, PRBool on)
{
switch (which) {
case SSL_SOCKS:
ssl_defaults.useSocks = PR_FALSE;
if (on) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
break;
case SSL_SECURITY:
ssl_defaults.useSecurity = on;
break;
case SSL_REQUEST_CERTIFICATE:
ssl_defaults.requestCertificate = on;
break;
case SSL_REQUIRE_CERTIFICATE:
ssl_defaults.requireCertificate = on;
break;
case SSL_HANDSHAKE_AS_CLIENT:
if ( ssl_defaults.handshakeAsServer && on ) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ssl_defaults.handshakeAsClient = on;
break;
case SSL_HANDSHAKE_AS_SERVER:
if ( ssl_defaults.handshakeAsClient && on ) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ssl_defaults.handshakeAsServer = on;
break;
case SSL_ENABLE_TLS:
ssl_defaults.enableTLS = on;
break;
case SSL_ENABLE_SSL3:
ssl_defaults.enableSSL3 = on;
break;
case SSL_ENABLE_SSL2:
ssl_defaults.enableSSL2 = on;
if (on) {
ssl_defaults.v2CompatibleHello = on;
}
break;
case SSL_NO_CACHE:
ssl_defaults.noCache = on;
break;
case SSL_ENABLE_FDX:
ssl_defaults.fdx = on;
case SSL_V2_COMPATIBLE_HELLO:
ssl_defaults.v2CompatibleHello = on;
if (!on) {
ssl_defaults.enableSSL2 = on;
}
break;
case SSL_ROLLBACK_DETECTION:
ssl_defaults.detectRollBack = on;
break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
return SECSuccess;
}
/* Part of the public NSS API.
* Since this is a global (not per-socket) setting, we cannot use the
* HandshakeLock to protect this. Probably want a global lock.
*/
SECStatus
SSL_SetPolicy(long which, int policy)
{
if ((which & 0xfffe) == SSL_RSA_OLDFIPS_WITH_3DES_EDE_CBC_SHA) {
/* one of the two old FIPS ciphers */
if (which == SSL_RSA_OLDFIPS_WITH_3DES_EDE_CBC_SHA)
which = SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA;
else if (which == SSL_RSA_OLDFIPS_WITH_DES_CBC_SHA)
which = SSL_RSA_FIPS_WITH_DES_CBC_SHA;
}
return SSL_CipherPolicySet(which, policy);
}
SECStatus
SSL_CipherPolicySet(PRInt32 which, PRInt32 policy)
{
SECStatus rv;
if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_SetPolicy(which, policy);
} else {
rv = ssl3_SetPolicy((ssl3CipherSuite)which, policy);
}
return rv;
}
SECStatus
SSL_CipherPolicyGet(PRInt32 which, PRInt32 *oPolicy)
{
SECStatus rv;
if (!oPolicy) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_GetPolicy(which, oPolicy);
} else {
rv = ssl3_GetPolicy((ssl3CipherSuite)which, oPolicy);
}
return rv;
}
/* Part of the public NSS API.
* Since this is a global (not per-socket) setting, we cannot use the
* HandshakeLock to protect this. Probably want a global lock.
* These changes have no effect on any sslSockets already created.
*/
SECStatus
SSL_EnableCipher(long which, PRBool enabled)
{
if ((which & 0xfffe) == SSL_RSA_OLDFIPS_WITH_3DES_EDE_CBC_SHA) {
/* one of the two old FIPS ciphers */
if (which == SSL_RSA_OLDFIPS_WITH_3DES_EDE_CBC_SHA)
which = SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA;
else if (which == SSL_RSA_OLDFIPS_WITH_DES_CBC_SHA)
which = SSL_RSA_FIPS_WITH_DES_CBC_SHA;
}
return SSL_CipherPrefSetDefault(which, enabled);
}
SECStatus
SSL_CipherPrefSetDefault(PRInt32 which, PRBool enabled)
{
SECStatus rv;
if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_CipherPrefSetDefault(which, enabled);
} else {
rv = ssl3_CipherPrefSetDefault((ssl3CipherSuite)which, enabled);
}
return rv;
}
SECStatus
SSL_CipherPrefGetDefault(PRInt32 which, PRBool *enabled)
{
SECStatus rv;
if (!enabled) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_CipherPrefGetDefault(which, enabled);
} else {
rv = ssl3_CipherPrefGetDefault((ssl3CipherSuite)which, enabled);
}
return rv;
}
SECStatus
SSL_CipherPrefSet(PRFileDesc *fd, PRInt32 which, PRBool enabled)
{
SECStatus rv;
sslSocket *ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in CipherPrefSet", SSL_GETPID(), fd));
return SECFailure;
}
if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_CipherPrefSet(ss, which, enabled);
} else {
rv = ssl3_CipherPrefSet(ss, (ssl3CipherSuite)which, enabled);
}
return rv;
}
SECStatus
SSL_CipherPrefGet(PRFileDesc *fd, PRInt32 which, PRBool *enabled)
{
SECStatus rv;
sslSocket *ss = ssl_FindSocket(fd);
if (!enabled) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in CipherPrefGet", SSL_GETPID(), fd));
*enabled = PR_FALSE;
return SECFailure;
}
if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_CipherPrefGet(ss, which, enabled);
} else {
rv = ssl3_CipherPrefGet(ss, (ssl3CipherSuite)which, enabled);
}
return rv;
}
SECStatus
NSS_SetDomesticPolicy(void)
{
#ifndef EXPORT_VERSION
SECStatus status = SECSuccess;
cipherPolicy * policy;
for (policy = ssl_ciphers; policy->cipher != 0; ++policy) {
status = SSL_SetPolicy(policy->cipher, SSL_ALLOWED);
if (status != SECSuccess)
break;
}
return status;
#else
return NSS_SetExportPolicy();
#endif
}
SECStatus
NSS_SetExportPolicy(void)
{
SECStatus status = SECSuccess;
cipherPolicy * policy;
for (policy = ssl_ciphers; policy->cipher != 0; ++policy) {
status = SSL_SetPolicy(policy->cipher, policy->export);
if (status != SECSuccess)
break;
}
return status;
}
SECStatus
NSS_SetFrancePolicy(void)
{
SECStatus status = SECSuccess;
cipherPolicy * policy;
for (policy = ssl_ciphers; policy->cipher != 0; ++policy) {
status = SSL_SetPolicy(policy->cipher, policy->france);
if (status != SECSuccess)
break;
}
return status;
}
/* LOCKS ??? XXX */
PRFileDesc *
SSL_ImportFD(PRFileDesc *model, PRFileDesc *fd)
{
sslSocket * ns = NULL;
PRStatus rv;
PRNetAddr addr;
if (model == NULL) {
/* Just create a default socket if we're given NULL for the model */
ns = ssl_NewSocket();
} else {
sslSocket * ss = ssl_FindSocket(model);
if (ss == NULL) {
SSL_DBG(("%d: SSL[%d]: bad model socket in ssl_ImportFD",
SSL_GETPID(), model));
return NULL;
}
ns = ssl_DupSocket(ss);
}
if (ns == NULL)
return NULL;
rv = ssl_PushIOLayer(ns, fd, PR_TOP_IO_LAYER);
if (rv != PR_SUCCESS) {
ssl_FreeSocket(ns);
SET_ERROR_CODE
return NULL;
}
#ifdef _WIN32
PR_Sleep(PR_INTERVAL_NO_WAIT); /* workaround NT winsock connect bug. */
#endif
ns = ssl_FindSocket(fd);
PORT_Assert(ns);
if (ns)
ns->TCPconnected = (PR_SUCCESS == ssl_DefGetpeername(ns, &addr));
return fd;
}
/************************************************************************/
/* The following functions are the TOP LEVEL SSL functions.
** They all get called through the NSPRIOMethods table below.
*/
static PRFileDesc * PR_CALLBACK
ssl_Accept(PRFileDesc *fd, PRNetAddr *sockaddr, PRIntervalTime timeout)
{
sslSocket *ss;
sslSocket *ns = NULL;
PRFileDesc *newfd = NULL;
PRFileDesc *osfd;
PRStatus status;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in accept", SSL_GETPID(), fd));
return NULL;
}
/* IF this is a listen socket, there shouldn't be any I/O going on */
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
ssl_Get1stHandshakeLock(ss);
ssl_GetSSL3HandshakeLock(ss);
ss->cTimeout = timeout;
osfd = ss->fd->lower;
/* First accept connection */
newfd = osfd->methods->accept(osfd, sockaddr, timeout);
if (newfd == NULL) {
SSL_DBG(("%d: SSL[%d]: accept failed, errno=%d",
SSL_GETPID(), ss->fd, PORT_GetError()));
} else {
/* Create ssl module */
ns = ssl_DupSocket(ss);
}
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_Release1stHandshakeLock(ss);
SSL_UNLOCK_WRITER(ss);
SSL_UNLOCK_READER(ss); /* ss isn't used below here. */
if (ns == NULL)
goto loser;
/* push ssl module onto the new socket */
status = ssl_PushIOLayer(ns, newfd, PR_TOP_IO_LAYER);
if (status != PR_SUCCESS)
goto loser;
/* Now start server connection handshake with client.
** Don't need locks here because nobody else has a reference to ns yet.
*/
if ( ns->useSecurity ) {
if ( ns->handshakeAsClient ) {
ns->handshake = ssl2_BeginClientHandshake;
ss->handshaking = sslHandshakingAsClient;
} else {
ns->handshake = ssl2_BeginServerHandshake;
ss->handshaking = sslHandshakingAsServer;
}
}
ns->TCPconnected = 1;
return newfd;
loser:
if (ns != NULL)
ssl_FreeSocket(ns);
if (newfd != NULL)
PR_Close(newfd);
return NULL;
}
static PRStatus PR_CALLBACK
ssl_Connect(PRFileDesc *fd, const PRNetAddr *sockaddr, PRIntervalTime timeout)
{
sslSocket *ss;
PRStatus rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in connect", SSL_GETPID(), fd));
return PR_FAILURE;
}
/* IF this is a listen socket, there shouldn't be any I/O going on */
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
ss->cTimeout = timeout;
rv = (PRStatus)(*ss->ops->connect)(ss, sockaddr);
#ifdef _WIN32
PR_Sleep(PR_INTERVAL_NO_WAIT); /* workaround NT winsock connect bug. */
#endif
SSL_UNLOCK_WRITER(ss);
SSL_UNLOCK_READER(ss);
return rv;
}
static PRStatus PR_CALLBACK
ssl_Bind(PRFileDesc *fd, const PRNetAddr *addr)
{
sslSocket * ss = ssl_GetPrivate(fd);
PRStatus rv;
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in bind", SSL_GETPID(), fd));
return PR_FAILURE;
}
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
rv = (PRStatus)(*ss->ops->bind)(ss, addr);
SSL_UNLOCK_WRITER(ss);
SSL_UNLOCK_READER(ss);
return rv;
}
static PRStatus PR_CALLBACK
ssl_Listen(PRFileDesc *fd, PRIntn backlog)
{
sslSocket * ss = ssl_GetPrivate(fd);
PRStatus rv;
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in listen", SSL_GETPID(), fd));
return PR_FAILURE;
}
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
rv = (PRStatus)(*ss->ops->listen)(ss, backlog);
SSL_UNLOCK_WRITER(ss);
SSL_UNLOCK_READER(ss);
return rv;
}
static PRStatus PR_CALLBACK
ssl_Shutdown(PRFileDesc *fd, PRIntn how)
{
sslSocket * ss = ssl_GetPrivate(fd);
PRStatus rv;
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in shutdown", SSL_GETPID(), fd));
return PR_FAILURE;
}
if (how == PR_SHUTDOWN_RCV || how == PR_SHUTDOWN_BOTH) {
SSL_LOCK_READER(ss);
}
if (how == PR_SHUTDOWN_SEND || how == PR_SHUTDOWN_BOTH) {
SSL_LOCK_WRITER(ss);
}
rv = (PRStatus)(*ss->ops->shutdown)(ss, how);
if (how == PR_SHUTDOWN_SEND || how == PR_SHUTDOWN_BOTH) {
SSL_UNLOCK_WRITER(ss);
}
if (how == PR_SHUTDOWN_RCV || how == PR_SHUTDOWN_BOTH) {
SSL_UNLOCK_READER(ss);
}
return rv;
}
static PRStatus PR_CALLBACK
ssl_Close(PRFileDesc *fd)
{
sslSocket *ss;
PRStatus rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in close", SSL_GETPID(), fd));
return PR_FAILURE;
}
/* There must not be any I/O going on */
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
/* By the time this function returns,
** ss is an invalid pointer, and the locks to which it points have
** been unlocked and freed. So, this is the ONE PLACE in all of SSL
** where the LOCK calls and the corresponding UNLOCK calls are not in
** the same function scope. The unlock calls are in ssl_FreeSocket().
*/
rv = (PRStatus)(*ss->ops->close)(ss);
return rv;
}
static int PR_CALLBACK
ssl_Recv(PRFileDesc *fd, void *buf, PRInt32 len, PRIntn flags,
PRIntervalTime timeout)
{
sslSocket *ss;
int rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in recv", SSL_GETPID(), fd));
return SECFailure;
}
SSL_LOCK_READER(ss);
ss->rTimeout = timeout;
if (!ss->fdx)
ss->wTimeout = timeout;
rv = (*ss->ops->recv)(ss, (unsigned char*)buf, len, flags);
SSL_UNLOCK_READER(ss);
return rv;
}
static int PR_CALLBACK
ssl_Send(PRFileDesc *fd, const void *buf, PRInt32 len, PRIntn flags,
PRIntervalTime timeout)
{
sslSocket *ss;
int rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in send", SSL_GETPID(), fd));
return SECFailure;
}
SSL_LOCK_WRITER(ss);
ss->wTimeout = timeout;
if (!ss->fdx)
ss->rTimeout = timeout;
rv = (*ss->ops->send)(ss, (const unsigned char*)buf, len, flags);
SSL_UNLOCK_WRITER(ss);
return rv;
}
static int PR_CALLBACK
ssl_Read(PRFileDesc *fd, void *buf, PRInt32 len)
{
sslSocket *ss;
int rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in read", SSL_GETPID(), fd));
return SECFailure;
}
SSL_LOCK_READER(ss);
ss->rTimeout = PR_INTERVAL_NO_TIMEOUT;
if (!ss->fdx)
ss->wTimeout = PR_INTERVAL_NO_TIMEOUT;
rv = (*ss->ops->read)(ss, (unsigned char*)buf, len);
SSL_UNLOCK_READER(ss);
return rv;
}
static int PR_CALLBACK
ssl_Write(PRFileDesc *fd, const void *buf, PRInt32 len)
{
sslSocket *ss;
int rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in write", SSL_GETPID(), fd));
return SECFailure;
}
SSL_LOCK_WRITER(ss);
ss->wTimeout = PR_INTERVAL_NO_TIMEOUT;
if (!ss->fdx)
ss->rTimeout = PR_INTERVAL_NO_TIMEOUT;
rv = (*ss->ops->write)(ss, (const unsigned char*)buf, len);
SSL_UNLOCK_WRITER(ss);
return rv;
}
static PRStatus PR_CALLBACK
ssl_GetPeerName(PRFileDesc *fd, PRNetAddr *addr)
{
sslSocket *ss;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in getpeername", SSL_GETPID(), fd));
return PR_FAILURE;
}
return (PRStatus)(*ss->ops->getpeername)(ss, addr);
}
/*
*/
SECStatus
ssl_GetPeerInfo(sslSocket *ss)
{
PRFileDesc * osfd;
int rv;
PRNetAddr sin;
osfd = ss->fd->lower;
PORT_Memset(&sin, 0, sizeof(sin));
rv = osfd->methods->getpeername(osfd, &sin);
if (rv < 0) {
return SECFailure;
}
ss->TCPconnected = 1;
if (sin.inet.family == PR_AF_INET) {
PR_ConvertIPv4AddrToIPv6(sin.inet.ip, &ss->sec.ci.peer);
ss->sec.ci.port = sin.inet.port;
} else if (sin.ipv6.family == PR_AF_INET6) {
ss->sec.ci.peer = sin.ipv6.ip;
ss->sec.ci.port = sin.ipv6.port;
} else {
PORT_SetError(PR_ADDRESS_NOT_SUPPORTED_ERROR);
return SECFailure;
}
return SECSuccess;
}
static PRStatus PR_CALLBACK
ssl_GetSockName(PRFileDesc *fd, PRNetAddr *name)
{
sslSocket *ss;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in getsockname", SSL_GETPID(), fd));
return PR_FAILURE;
}
return (PRStatus)(*ss->ops->getsockname)(ss, name);
}
SECStatus PR_CALLBACK
SSL_SetSockPeerID(PRFileDesc *fd, char *peerID)
{
sslSocket *ss;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_SetCacheIndex",
SSL_GETPID(), fd));
return SECFailure;
}
ss->peerID = PORT_Strdup(peerID);
return SECSuccess;
}
#define PR_POLL_RW (PR_POLL_WRITE | PR_POLL_READ)
static PRInt16 PR_CALLBACK
ssl_Poll(PRFileDesc *fd, PRInt16 how_flags, PRInt16 *p_out_flags)
{
sslSocket *ss;
PRInt16 new_flags = how_flags; /* should select on these flags. */
PRNetAddr addr;
*p_out_flags = 0;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_Poll",
SSL_GETPID(), fd));
return 0; /* don't poll on this socket */
}
if (ss->useSecurity &&
ss->handshaking != sslHandshakingUndetermined &&
!ss->firstHsDone &&
(how_flags & PR_POLL_RW)) {
if (!ss->TCPconnected) {
ss->TCPconnected = (PR_SUCCESS == ssl_DefGetpeername(ss, &addr));
}
/* If it's not connected, then presumably the application is polling
** on read or write appropriately, so don't change it.
*/
if (ss->TCPconnected) {
if (!ss->handshakeBegun) {
/* If the handshake has not begun, poll on read or write
** based on the local application's role in the handshake,
** not based on what the application requested.
*/
new_flags &= ~PR_POLL_RW;
if (ss->handshaking == sslHandshakingAsClient) {
new_flags |= PR_POLL_WRITE;
} else { /* handshaking as server */
new_flags |= PR_POLL_READ;
}
} else
/* First handshake is in progress */
if (ss->lastWriteBlocked) {
if (new_flags & PR_POLL_READ) {
/* The caller is waiting for data to be received,
** but the initial handshake is blocked on write, or the
** client's first handshake record has not been written.
** The code should select on write, not read.
*/
new_flags ^= PR_POLL_READ; /* don't select on read. */
new_flags |= PR_POLL_WRITE; /* do select on write. */
}
} else if (new_flags & PR_POLL_WRITE) {
/* The caller is trying to write, but the handshake is
** blocked waiting for data to read, and the first
** handshake has been sent. so do NOT to poll on write.
*/
new_flags ^= PR_POLL_WRITE; /* don't select on write. */
new_flags |= PR_POLL_READ; /* do select on read. */
}
}
} else if ((new_flags & PR_POLL_READ) && (SSL_DataPending(fd) > 0)) {
*p_out_flags = PR_POLL_READ; /* it's ready already. */
return new_flags;
} else if ((ss->lastWriteBlocked) && (how_flags & PR_POLL_READ) &&
(ss->pendingBuf.len != 0)) { /* write data waiting to be sent */
new_flags |= PR_POLL_WRITE; /* also select on write. */
}
if (new_flags && (fd->lower->methods->poll != NULL)) {
PRInt16 lower_out_flags = 0;
PRInt16 lower_new_flags;
lower_new_flags = fd->lower->methods->poll(fd->lower, new_flags,
&lower_out_flags);
if ((lower_new_flags & lower_out_flags) && (how_flags != new_flags)) {
PRInt16 out_flags = lower_out_flags & ~PR_POLL_RW;
if (lower_out_flags & PR_POLL_READ)
out_flags |= PR_POLL_WRITE;
if (lower_out_flags & PR_POLL_WRITE)
out_flags |= PR_POLL_READ;
*p_out_flags = out_flags;
new_flags = how_flags;
} else {
*p_out_flags = lower_out_flags;
new_flags = lower_new_flags;
}
}
return new_flags;
}
PRBool
ssl_FdIsBlocking(PRFileDesc *fd)
{
PRSocketOptionData opt;
PRStatus status;
opt.option = PR_SockOpt_Nonblocking;
opt.value.non_blocking = PR_FALSE;
status = PR_GetSocketOption(fd, &opt);
if (status != PR_SUCCESS)
return PR_FALSE;
return (PRBool)!opt.value.non_blocking;
}
PRBool
ssl_SocketIsBlocking(sslSocket *ss)
{
return ssl_FdIsBlocking(ss->fd);
}
PRInt32 sslFirstBufSize = 8 * 1024;
PRInt32 sslCopyLimit = 1024;
static PRInt32 PR_CALLBACK
ssl_WriteV(PRFileDesc *fd, const PRIOVec *iov, PRInt32 vectors,
PRIntervalTime timeout)
{
PRInt32 bufLen;
PRInt32 left;
PRInt32 rv;
PRInt32 sent = 0;
const PRInt32 first_len = sslFirstBufSize;
const PRInt32 limit = sslCopyLimit;
PRBool blocking;
PRIOVec myIov = { 0, 0 };
char buf[MAX_FRAGMENT_LENGTH];
if (vectors > PR_MAX_IOVECTOR_SIZE) {
PORT_SetError(PR_BUFFER_OVERFLOW_ERROR);
return -1;
}
blocking = ssl_FdIsBlocking(fd);
#define K16 sizeof(buf)
#define KILL_VECTORS while (vectors && !iov->iov_len) { ++iov; --vectors; }
#define GET_VECTOR do { myIov = *iov++; --vectors; KILL_VECTORS } while (0)
#define HANDLE_ERR(rv, len) \
if (rv != len) { \
if (rv < 0) { \
if (!blocking \
&& (PR_GetError() == PR_WOULD_BLOCK_ERROR) \
&& (sent > 0)) { \
return sent; \
} else { \
return -1; \
} \
} \
/* Only a nonblocking socket can have partial sends */ \
PR_ASSERT(!blocking); \
return sent; \
}
#define SEND(bfr, len) \
do { \
rv = ssl_Send(fd, bfr, len, 0, timeout); \
HANDLE_ERR(rv, len) \
sent += len; \
} while (0)
/* Make sure the first write is at least 8 KB, if possible. */
KILL_VECTORS
if (!vectors)
return ssl_Send(fd, 0, 0, 0, timeout);
GET_VECTOR;
if (!vectors) {
return ssl_Send(fd, myIov.iov_base, myIov.iov_len, 0, timeout);
}
if (myIov.iov_len < first_len) {
PORT_Memcpy(buf, myIov.iov_base, myIov.iov_len);
bufLen = myIov.iov_len;
left = first_len - bufLen;
while (vectors && left) {
int toCopy;
GET_VECTOR;
toCopy = PR_MIN(left, myIov.iov_len);
PORT_Memcpy(buf + bufLen, myIov.iov_base, toCopy);
bufLen += toCopy;
left -= toCopy;
myIov.iov_base += toCopy;
myIov.iov_len -= toCopy;
}
SEND( buf, bufLen );
}
while (vectors || myIov.iov_len) {
PRInt32 addLen;
if (!myIov.iov_len) {
GET_VECTOR;
}
while (myIov.iov_len >= K16) {
SEND(myIov.iov_base, K16);
myIov.iov_base += K16;
myIov.iov_len -= K16;
}
if (!myIov.iov_len)
continue;
if (!vectors || myIov.iov_len > limit) {
addLen = 0;
} else if ((addLen = iov->iov_len % K16) + myIov.iov_len <= limit) {
/* Addlen is already computed. */;
} else if (vectors > 1 &&
iov[1].iov_len % K16 + addLen + myIov.iov_len <= 2 * limit) {
addLen = limit - myIov.iov_len;
} else
addLen = 0;
if (!addLen) {
SEND( myIov.iov_base, myIov.iov_len );
myIov.iov_len = 0;
continue;
}
PORT_Memcpy(buf, myIov.iov_base, myIov.iov_len);
bufLen = myIov.iov_len;
do {
GET_VECTOR;
PORT_Memcpy(buf + bufLen, myIov.iov_base, addLen);
myIov.iov_base += addLen;
myIov.iov_len -= addLen;
bufLen += addLen;
left = PR_MIN( limit, K16 - bufLen);
if (!vectors /* no more left */
|| myIov.iov_len > 0 /* we didn't use that one all up */
|| bufLen >= K16 /* it's full. */
) {
addLen = 0;
} else if ((addLen = iov->iov_len % K16) <= left) {
/* Addlen is already computed. */;
} else if (vectors > 1 &&
iov[1].iov_len % K16 + addLen <= left + limit) {
addLen = left;
} else
addLen = 0;
} while (addLen);
SEND( buf, bufLen );
}
return sent;
}
/*
* These functions aren't implemented.
*/
static PRInt32 PR_CALLBACK
ssl_Available(PRFileDesc *fd)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return SECFailure;
}
static PRInt64 PR_CALLBACK
ssl_Available64(PRFileDesc *fd)
{
PRInt64 res;
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
LL_I2L(res, -1L);
return res;
}
static PRStatus PR_CALLBACK
ssl_FSync(PRFileDesc *fd)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
static PRInt32 PR_CALLBACK
ssl_Seek(PRFileDesc *fd, PRInt32 offset, PRSeekWhence how) {
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return SECFailure;
}
static PRInt64 PR_CALLBACK
ssl_Seek64(PRFileDesc *fd, PRInt64 offset, PRSeekWhence how) {
PRInt64 res;
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
LL_I2L(res, -1L);
return res;
}
static PRStatus PR_CALLBACK
ssl_FileInfo(PRFileDesc *fd, PRFileInfo *info)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
static PRStatus PR_CALLBACK
ssl_FileInfo64(PRFileDesc *fd, PRFileInfo64 *info)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
static PRInt32 PR_CALLBACK
ssl_RecvFrom(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags,
PRNetAddr *addr, PRIntervalTime timeout)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return SECFailure;
}
static PRInt32 PR_CALLBACK
ssl_SendTo(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags,
const PRNetAddr *addr, PRIntervalTime timeout)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return SECFailure;
}
static const PRIOMethods ssl_methods = {
PR_DESC_LAYERED,
ssl_Close, /* close */
ssl_Read, /* read */
ssl_Write, /* write */
ssl_Available, /* available */
ssl_Available64, /* available64 */
ssl_FSync, /* fsync */
ssl_Seek, /* seek */
ssl_Seek64, /* seek64 */
ssl_FileInfo, /* fileInfo */
ssl_FileInfo64, /* fileInfo64 */
ssl_WriteV, /* writev */
ssl_Connect, /* connect */
ssl_Accept, /* accept */
ssl_Bind, /* bind */
ssl_Listen, /* listen */
ssl_Shutdown, /* shutdown */
ssl_Recv, /* recv */
ssl_Send, /* send */
ssl_RecvFrom, /* recvfrom */
ssl_SendTo, /* sendto */
ssl_Poll, /* poll */
ssl_EmulateAcceptRead, /* acceptread */
ssl_EmulateTransmitFile, /* transmitfile */
ssl_GetSockName, /* getsockname */
ssl_GetPeerName, /* getpeername */
NULL, /* getsockopt OBSOLETE */
NULL, /* setsockopt OBSOLETE */
NULL, /* getsocketoption */
NULL, /* setsocketoption */
ssl_EmulateSendFile, /* Send a (partial) file with header/trailer*/
NULL, /* reserved for future use */
NULL, /* reserved for future use */
NULL, /* reserved for future use */
NULL, /* reserved for future use */
NULL /* reserved for future use */
};
static PRIOMethods combined_methods;
static void
ssl_SetupIOMethods(void)
{
PRIOMethods *new_methods = &combined_methods;
const PRIOMethods *nspr_methods = PR_GetDefaultIOMethods();
const PRIOMethods *my_methods = &ssl_methods;
*new_methods = *nspr_methods;
new_methods->file_type = my_methods->file_type;
new_methods->close = my_methods->close;
new_methods->read = my_methods->read;
new_methods->write = my_methods->write;
new_methods->available = my_methods->available;
new_methods->available64 = my_methods->available64;
new_methods->fsync = my_methods->fsync;
new_methods->seek = my_methods->seek;
new_methods->seek64 = my_methods->seek64;
new_methods->fileInfo = my_methods->fileInfo;
new_methods->fileInfo64 = my_methods->fileInfo64;
new_methods->writev = my_methods->writev;
new_methods->connect = my_methods->connect;
new_methods->accept = my_methods->accept;
new_methods->bind = my_methods->bind;
new_methods->listen = my_methods->listen;
new_methods->shutdown = my_methods->shutdown;
new_methods->recv = my_methods->recv;
new_methods->send = my_methods->send;
new_methods->recvfrom = my_methods->recvfrom;
new_methods->sendto = my_methods->sendto;
new_methods->poll = my_methods->poll;
new_methods->acceptread = my_methods->acceptread;
new_methods->transmitfile = my_methods->transmitfile;
new_methods->getsockname = my_methods->getsockname;
new_methods->getpeername = my_methods->getpeername;
/* new_methods->getsocketoption = my_methods->getsocketoption; */
/* new_methods->setsocketoption = my_methods->setsocketoption; */
new_methods->sendfile = my_methods->sendfile;
}
static PRCallOnceType initIoLayerOnce;
static PRStatus
ssl_InitIOLayer(void)
{
ssl_layer_id = PR_GetUniqueIdentity("SSL");
ssl_SetupIOMethods();
ssl_inited = PR_TRUE;
return PR_SUCCESS;
}
static PRStatus
ssl_PushIOLayer(sslSocket *ns, PRFileDesc *stack, PRDescIdentity id)
{
PRFileDesc *layer = NULL;
PRStatus status;
if (!ssl_inited) {
PR_CallOnce(&initIoLayerOnce, &ssl_InitIOLayer);
}
if (ns == NULL)
goto loser;
layer = PR_CreateIOLayerStub(ssl_layer_id, &combined_methods);
if (layer == NULL)
goto loser;
layer->secret = (PRFilePrivate *)ns;
/* Here, "stack" points to the PRFileDesc on the top of the stack.
** "layer" points to a new FD that is to be inserted into the stack.
** If layer is being pushed onto the top of the stack, then
** PR_PushIOLayer switches the contents of stack and layer, and then
** puts stack on top of layer, so that after it is done, the top of
** stack is the same "stack" as it was before, and layer is now the
** FD for the former top of stack.
** After this call, stack always points to the top PRFD on the stack.
** If this function fails, the contents of stack and layer are as
** they were before the call.
*/
status = PR_PushIOLayer(stack, id, layer);
if (status != PR_SUCCESS)
goto loser;
ns->fd = (id == PR_TOP_IO_LAYER) ? stack : layer;
return PR_SUCCESS;
loser:
if (layer) {
layer->dtor(layer); /* free layer */
}
return PR_FAILURE;
}
/*
** Create a newsocket structure for a file descriptor.
*/
static sslSocket *
ssl_NewSocket(void)
{
sslSocket *ss;
#ifdef DEBUG
#if (defined(XP_UNIX) || defined(XP_WIN32) || defined(XP_BEOS)) && !defined(_WIN32_WCE)
static int firsttime = 1;
if (firsttime) {
firsttime = 0;
{
char *ev = getenv("SSLDEBUG");
if (ev && ev[0]) {
ssl_debug = atoi(ev);
SSL_TRACE(("SSL: debugging set to %d", ssl_debug));
}
}
#ifdef TRACE
{
char *ev = getenv("SSLTRACE");
if (ev && ev[0]) {
ssl_trace = atoi(ev);
SSL_TRACE(("SSL: tracing set to %d", ssl_trace));
}
}
#endif /* TRACE */
}
#endif /* XP_UNIX || XP_WIN32 */
#endif /* DEBUG */
/* Make a new socket and get it ready */
ss = (sslSocket*) PORT_ZAlloc(sizeof(sslSocket));
if (ss) {
/* This should be of type SSLKEAType, but CC on IRIX
* complains during the for loop.
*/
int i;
SECStatus status;
ss->useSecurity = ssl_defaults.useSecurity;
ss->useSocks = PR_FALSE;
ss->requestCertificate = ssl_defaults.requestCertificate;
ss->requireCertificate = ssl_defaults.requireCertificate;
ss->handshakeAsClient = ssl_defaults.handshakeAsClient;
ss->handshakeAsServer = ssl_defaults.handshakeAsServer;
ss->enableSSL2 = ssl_defaults.enableSSL2;
ss->enableSSL3 = ssl_defaults.enableSSL3;
ss->enableTLS = ssl_defaults.enableTLS ;
ss->fdx = ssl_defaults.fdx;
ss->v2CompatibleHello = ssl_defaults.v2CompatibleHello;
ss->detectRollBack = ssl_defaults.detectRollBack;
ss->noCache = ssl_defaults.noCache;
ss->peerID = NULL;
ss->rTimeout = PR_INTERVAL_NO_TIMEOUT;
ss->wTimeout = PR_INTERVAL_NO_TIMEOUT;
ss->cTimeout = PR_INTERVAL_NO_TIMEOUT;
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0; /* produced lazily */
ss->preferredCipher = NULL;
ss->url = NULL;
for (i=kt_null; i < kt_kea_size; i++) {
sslServerCerts * sc = ss->serverCerts + i;
sc->serverCert = NULL;
sc->serverCertChain = NULL;
sc->serverKey = NULL;
sc->serverKeyBits = 0;
}
ss->stepDownKeyPair = NULL;
ss->dbHandle = CERT_GetDefaultCertDB();
/* Provide default implementation of hooks */
ss->authCertificate = SSL_AuthCertificate;
ss->authCertificateArg = (void *)ss->dbHandle;
ss->getClientAuthData = NULL;
ss->handleBadCert = NULL;
ss->badCertArg = NULL;
ss->pkcs11PinArg = NULL;
ssl_ChooseOps(ss);
ssl2_InitSocketPolicy(ss);
ssl3_InitSocketPolicy(ss);
ss->firstHandshakeLock = PZ_NewMonitor(nssILockSSL);
if (!ss->firstHandshakeLock) goto loser;
ss->ssl3HandshakeLock = PZ_NewMonitor(nssILockSSL);
if (!ss->ssl3HandshakeLock) goto loser;
ss->specLock = NSSRWLock_New(SSL_LOCK_RANK_SPEC, NULL);
if (!ss->specLock) goto loser;
ss->recvBufLock = PZ_NewMonitor(nssILockSSL);
if (!ss->recvBufLock) goto loser;
ss->xmitBufLock = PZ_NewMonitor(nssILockSSL);
if (!ss->xmitBufLock) goto loser;
ss->writerThread = NULL;
if (ssl_lock_readers) {
ss->recvLock = PZ_NewLock(nssILockSSL);
if (!ss->recvLock) goto loser;
ss->sendLock = PZ_NewLock(nssILockSSL);
if (!ss->sendLock) goto loser;
}
status = ssl_CreateSecurityInfo(ss);
if (status != SECSuccess) goto loser;
status = ssl_InitGather(&ss->gs);
if (status != SECSuccess) {
loser:
ssl_DestroySocketContents(ss);
ssl_DestroyLocks(ss);
PORT_Free(ss);
ss = NULL;
}
}
return ss;
}
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