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putty/scp.c

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56 KiB
C
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/*
* scp.c - Scp (Secure Copy) client for PuTTY.
* Joris van Rantwijk, Simon Tatham
*
* This is mainly based on ssh-1.2.26/scp.c by Timo Rinne & Tatu Ylonen.
* They, in turn, used stuff from BSD rcp.
*
* (SGT, 2001-09-10: Joris van Rantwijk assures me that although
* this file as originally submitted was inspired by, and
* _structurally_ based on, ssh-1.2.26's scp.c, there wasn't any
* actual code duplicated, so the above comment shouldn't give rise
* to licensing issues.)
*/
#include <windows.h>
#ifndef AUTO_WINSOCK
#ifdef WINSOCK_TWO
#include <winsock2.h>
#else
#include <winsock.h>
#endif
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <time.h>
#include <assert.h>
#define PUTTY_DO_GLOBALS
#include "putty.h"
#include "ssh.h"
#include "sftp.h"
#include "winstuff.h"
#include "storage.h"
#define TIME_POSIX_TO_WIN(t, ft) (*(LONGLONG*)&(ft) = \
((LONGLONG) (t) + (LONGLONG) 11644473600) * (LONGLONG) 10000000)
#define TIME_WIN_TO_POSIX(ft, t) ((t) = (unsigned long) \
((*(LONGLONG*)&(ft)) / (LONGLONG) 10000000 - (LONGLONG) 11644473600))
/* GUI Adaptation - Sept 2000 */
/* This is just a base value from which the main message numbers are
* derived. */
#define WM_APP_BASE 0x8000
/* These two pass a single character value in wParam. They represent
* the visible output from PSCP. */
#define WM_STD_OUT_CHAR ( WM_APP_BASE+400 )
#define WM_STD_ERR_CHAR ( WM_APP_BASE+401 )
/* These pass a transfer status update. WM_STATS_CHAR passes a single
* character in wParam, and is called repeatedly to pass the name of
* the file, terminated with "\n". WM_STATS_SIZE passes the size of
* the file being transferred in wParam. WM_STATS_ELAPSED is called
* to pass the elapsed time (in seconds) in wParam, and
* WM_STATS_PERCENT passes the percentage of the transfer which is
* complete, also in wParam. */
#define WM_STATS_CHAR ( WM_APP_BASE+402 )
#define WM_STATS_SIZE ( WM_APP_BASE+403 )
#define WM_STATS_PERCENT ( WM_APP_BASE+404 )
#define WM_STATS_ELAPSED ( WM_APP_BASE+405 )
/* These are used at the end of a run to pass an error code in
* wParam: zero means success, nonzero means failure. WM_RET_ERR_CNT
* is used after a copy, and WM_LS_RET_ERR_CNT is used after a file
* list operation. */
#define WM_RET_ERR_CNT ( WM_APP_BASE+406 )
#define WM_LS_RET_ERR_CNT ( WM_APP_BASE+407 )
/* More transfer status update messages. WM_STATS_DONE passes the
* number of bytes sent so far in wParam. WM_STATS_ETA passes the
* estimated time to completion (in seconds). WM_STATS_RATEBS passes
* the average transfer rate (in bytes per second). */
#define WM_STATS_DONE ( WM_APP_BASE+408 )
#define WM_STATS_ETA ( WM_APP_BASE+409 )
#define WM_STATS_RATEBS ( WM_APP_BASE+410 )
static int list = 0;
static int verbose = 0;
static int recursive = 0;
static int preserve = 0;
static int targetshouldbedirectory = 0;
static int statistics = 1;
static int prev_stats_len = 0;
static int scp_unsafe_mode = 0;
static int errs = 0;
/* GUI Adaptation - Sept 2000 */
#define NAME_STR_MAX 2048
static char statname[NAME_STR_MAX + 1];
static unsigned long statsize = 0;
static unsigned long statdone = 0;
static unsigned long stateta = 0;
static unsigned long statratebs = 0;
static int statperct = 0;
static unsigned long statelapsed = 0;
static int gui_mode = 0;
static char *gui_hwnd = NULL;
static int using_sftp = 0;
static Backend *back;
static void *backhandle;
static void source(char *src);
static void rsource(char *src);
static void sink(char *targ, char *src);
/* GUI Adaptation - Sept 2000 */
static void tell_char(FILE * stream, char c);
static void tell_str(FILE * stream, char *str);
static void tell_user(FILE * stream, char *fmt, ...);
static void gui_update_stats(char *name, unsigned long size,
int percentage, unsigned long elapsed,
unsigned long done, unsigned long eta,
unsigned long ratebs);
/*
* The maximum amount of queued data we accept before we stop and
* wait for the server to process some.
*/
#define MAX_SCP_BUFSIZE 16384
void ldisc_send(void *handle, char *buf, int len, int interactive)
{
/*
* This is only here because of the calls to ldisc_send(NULL,
* 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc
* as an ldisc. So if we get called with any real data, I want
* to know about it.
*/
assert(len == 0);
}
/* GUI Adaptation - Sept 2000 */
static void send_msg(HWND h, UINT message, WPARAM wParam)
{
while (!PostMessage(h, message, wParam, 0))
SleepEx(1000, TRUE);
}
static void tell_char(FILE * stream, char c)
{
if (!gui_mode)
fputc(c, stream);
else {
unsigned int msg_id = WM_STD_OUT_CHAR;
if (stream == stderr)
msg_id = WM_STD_ERR_CHAR;
send_msg((HWND) atoi(gui_hwnd), msg_id, (WPARAM) c);
}
}
static void tell_str(FILE * stream, char *str)
{
unsigned int i;
for (i = 0; i < strlen(str); ++i)
tell_char(stream, str[i]);
}
static void tell_user(FILE * stream, char *fmt, ...)
{
char str[0x100]; /* Make the size big enough */
va_list ap;
va_start(ap, fmt);
vsprintf(str, fmt, ap);
va_end(ap);
strcat(str, "\n");
tell_str(stream, str);
}
static void gui_update_stats(char *name, unsigned long size,
int percentage, unsigned long elapsed,
unsigned long done, unsigned long eta,
unsigned long ratebs)
{
unsigned int i;
if (strcmp(name, statname) != 0) {
for (i = 0; i < strlen(name); ++i)
send_msg((HWND) atoi(gui_hwnd), WM_STATS_CHAR,
(WPARAM) name[i]);
send_msg((HWND) atoi(gui_hwnd), WM_STATS_CHAR, (WPARAM) '\n');
strcpy(statname, name);
}
if (statsize != size) {
send_msg((HWND) atoi(gui_hwnd), WM_STATS_SIZE, (WPARAM) size);
statsize = size;
}
if (statdone != done) {
send_msg((HWND) atoi(gui_hwnd), WM_STATS_DONE, (WPARAM) done);
statdone = done;
}
if (stateta != eta) {
send_msg((HWND) atoi(gui_hwnd), WM_STATS_ETA, (WPARAM) eta);
stateta = eta;
}
if (statratebs != ratebs) {
send_msg((HWND) atoi(gui_hwnd), WM_STATS_RATEBS, (WPARAM) ratebs);
statratebs = ratebs;
}
if (statelapsed != elapsed) {
send_msg((HWND) atoi(gui_hwnd), WM_STATS_ELAPSED,
(WPARAM) elapsed);
statelapsed = elapsed;
}
if (statperct != percentage) {
send_msg((HWND) atoi(gui_hwnd), WM_STATS_PERCENT,
(WPARAM) percentage);
statperct = percentage;
}
}
/*
* Print an error message and perform a fatal exit.
*/
void fatalbox(char *fmt, ...)
{
char str[0x100]; /* Make the size big enough */
va_list ap;
va_start(ap, fmt);
strcpy(str, "Fatal: ");
vsprintf(str + strlen(str), fmt, ap);
va_end(ap);
strcat(str, "\n");
tell_str(stderr, str);
errs++;
if (gui_mode) {
unsigned int msg_id = WM_RET_ERR_CNT;
if (list)
msg_id = WM_LS_RET_ERR_CNT;
while (!PostMessage
((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs,
0 /*lParam */ ))SleepEx(1000, TRUE);
}
cleanup_exit(1);
}
void modalfatalbox(char *fmt, ...)
{
char str[0x100]; /* Make the size big enough */
va_list ap;
va_start(ap, fmt);
strcpy(str, "Fatal: ");
vsprintf(str + strlen(str), fmt, ap);
va_end(ap);
strcat(str, "\n");
tell_str(stderr, str);
errs++;
if (gui_mode) {
unsigned int msg_id = WM_RET_ERR_CNT;
if (list)
msg_id = WM_LS_RET_ERR_CNT;
while (!PostMessage
((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs,
0 /*lParam */ ))SleepEx(1000, TRUE);
}
cleanup_exit(1);
}
void connection_fatal(void *frontend, char *fmt, ...)
{
char str[0x100]; /* Make the size big enough */
va_list ap;
va_start(ap, fmt);
strcpy(str, "Fatal: ");
vsprintf(str + strlen(str), fmt, ap);
va_end(ap);
strcat(str, "\n");
tell_str(stderr, str);
errs++;
if (gui_mode) {
unsigned int msg_id = WM_RET_ERR_CNT;
if (list)
msg_id = WM_LS_RET_ERR_CNT;
while (!PostMessage
((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs,
0 /*lParam */ ))SleepEx(1000, TRUE);
}
cleanup_exit(1);
}
/*
* Be told what socket we're supposed to be using.
*/
static SOCKET scp_ssh_socket;
char *do_select(SOCKET skt, int startup)
{
if (startup)
scp_ssh_socket = skt;
else
scp_ssh_socket = INVALID_SOCKET;
return NULL;
}
extern int select_result(WPARAM, LPARAM);
/*
* Receive a block of data from the SSH link. Block until all data
* is available.
*
* To do this, we repeatedly call the SSH protocol module, with our
* own trap in from_backend() to catch the data that comes back. We
* do this until we have enough data.
*/
static unsigned char *outptr; /* where to put the data */
static unsigned outlen; /* how much data required */
static unsigned char *pending = NULL; /* any spare data */
static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */
int from_backend(void *frontend, int is_stderr, char *data, int datalen)
{
unsigned char *p = (unsigned char *) data;
unsigned len = (unsigned) datalen;
assert(len > 0);
/*
* stderr data is just spouted to local stderr and otherwise
* ignored.
*/
if (is_stderr) {
fwrite(data, 1, len, stderr);
return 0;
}
/*
* If this is before the real session begins, just return.
*/
if (!outptr)
return 0;
if (outlen > 0) {
unsigned used = outlen;
if (used > len)
used = len;
memcpy(outptr, p, used);
outptr += used;
outlen -= used;
p += used;
len -= used;
}
if (len > 0) {
if (pendsize < pendlen + len) {
pendsize = pendlen + len + 4096;
pending = (pending ? srealloc(pending, pendsize) :
smalloc(pendsize));
if (!pending)
fatalbox("Out of memory");
}
memcpy(pending + pendlen, p, len);
pendlen += len;
}
return 0;
}
static int scp_process_network_event(void)
{
fd_set readfds;
FD_ZERO(&readfds);
FD_SET(scp_ssh_socket, &readfds);
if (select(1, &readfds, NULL, NULL, NULL) < 0)
return 0; /* doom */
select_result((WPARAM) scp_ssh_socket, (LPARAM) FD_READ);
return 1;
}
static int ssh_scp_recv(unsigned char *buf, int len)
{
outptr = buf;
outlen = len;
/*
* See if the pending-input block contains some of what we
* need.
*/
if (pendlen > 0) {
unsigned pendused = pendlen;
if (pendused > outlen)
pendused = outlen;
memcpy(outptr, pending, pendused);
memmove(pending, pending + pendused, pendlen - pendused);
outptr += pendused;
outlen -= pendused;
pendlen -= pendused;
if (pendlen == 0) {
pendsize = 0;
sfree(pending);
pending = NULL;
}
if (outlen == 0)
return len;
}
while (outlen > 0) {
if (!scp_process_network_event())
return 0; /* doom */
}
return len;
}
/*
* Loop through the ssh connection and authentication process.
*/
static void ssh_scp_init(void)
{
if (scp_ssh_socket == INVALID_SOCKET)
return;
while (!back->sendok(backhandle)) {
fd_set readfds;
FD_ZERO(&readfds);
FD_SET(scp_ssh_socket, &readfds);
if (select(1, &readfds, NULL, NULL, NULL) < 0)
return; /* doom */
select_result((WPARAM) scp_ssh_socket, (LPARAM) FD_READ);
}
using_sftp = !ssh_fallback_cmd(backhandle);
}
/*
* Print an error message and exit after closing the SSH link.
*/
static void bump(char *fmt, ...)
{
char str[0x100]; /* Make the size big enough */
va_list ap;
va_start(ap, fmt);
strcpy(str, "Fatal: ");
vsprintf(str + strlen(str), fmt, ap);
va_end(ap);
strcat(str, "\n");
tell_str(stderr, str);
errs++;
if (back != NULL && back->socket(backhandle) != NULL) {
char ch;
back->special(backhandle, TS_EOF);
ssh_scp_recv(&ch, 1);
}
if (gui_mode) {
unsigned int msg_id = WM_RET_ERR_CNT;
if (list)
msg_id = WM_LS_RET_ERR_CNT;
while (!PostMessage
((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs,
0 /*lParam */ ))SleepEx(1000, TRUE);
}
cleanup_exit(1);
}
/*
* Open an SSH connection to user@host and execute cmd.
*/
static void do_cmd(char *host, char *user, char *cmd)
{
char *err, *realhost;
DWORD namelen;
if (host == NULL || host[0] == '\0')
bump("Empty host name");
/* Try to load settings for this host */
do_defaults(host, &cfg);
if (cfg.host[0] == '\0') {
/* No settings for this host; use defaults */
do_defaults(NULL, &cfg);
strncpy(cfg.host, host, sizeof(cfg.host) - 1);
cfg.host[sizeof(cfg.host) - 1] = '\0';
}
/*
* Force use of SSH. (If they got the protocol wrong we assume the
* port is useless too.)
*/
if (cfg.protocol != PROT_SSH) {
cfg.protocol = PROT_SSH;
cfg.port = 22;
}
/*
* Enact command-line overrides.
*/
cmdline_run_saved();
/*
* Trim leading whitespace off the hostname if it's there.
*/
{
int space = strspn(cfg.host, " \t");
memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space);
}
/* See if host is of the form user@host */
if (cfg.host[0] != '\0') {
char *atsign = strchr(cfg.host, '@');
/* Make sure we're not overflowing the user field */
if (atsign) {
if (atsign - cfg.host < sizeof cfg.username) {
strncpy(cfg.username, cfg.host, atsign - cfg.host);
cfg.username[atsign - cfg.host] = '\0';
}
memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1));
}
}
/*
* Trim a colon suffix off the hostname if it's there.
*/
cfg.host[strcspn(cfg.host, ":")] = '\0';
/*
* Remove any remaining whitespace from the hostname.
*/
{
int p1 = 0, p2 = 0;
while (cfg.host[p2] != '\0') {
if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') {
cfg.host[p1] = cfg.host[p2];
p1++;
}
p2++;
}
cfg.host[p1] = '\0';
}
/* Set username */
if (user != NULL && user[0] != '\0') {
strncpy(cfg.username, user, sizeof(cfg.username) - 1);
cfg.username[sizeof(cfg.username) - 1] = '\0';
} else if (cfg.username[0] == '\0') {
namelen = 0;
if (GetUserName(user, &namelen) == FALSE)
bump("Empty user name");
user = smalloc(namelen * sizeof(char));
GetUserName(user, &namelen);
if (verbose)
tell_user(stderr, "Guessing user name: %s", user);
strncpy(cfg.username, user, sizeof(cfg.username) - 1);
cfg.username[sizeof(cfg.username) - 1] = '\0';
free(user);
}
/*
* Disable scary things which shouldn't be enabled for simple
* things like SCP and SFTP: agent forwarding, port forwarding,
* X forwarding.
*/
cfg.x11_forward = 0;
cfg.agentfwd = 0;
cfg.portfwd[0] = cfg.portfwd[1] = '\0';
/*
* Attempt to start the SFTP subsystem as a first choice,
* falling back to the provided scp command if that fails.
*/
strcpy(cfg.remote_cmd, "sftp");
cfg.ssh_subsys = TRUE;
cfg.remote_cmd_ptr2 = cmd;
cfg.ssh_subsys2 = FALSE;
cfg.nopty = TRUE;
back = &ssh_backend;
err = back->init(NULL, &backhandle, cfg.host, cfg.port, &realhost, 0);
if (err != NULL)
bump("ssh_init: %s", err);
logctx = log_init(NULL);
back->provide_logctx(backhandle, logctx);
ssh_scp_init();
if (verbose && realhost != NULL)
tell_user(stderr, "Connected to %s\n", realhost);
sfree(realhost);
}
/*
* Update statistic information about current file.
*/
static void print_stats(char *name, unsigned long size, unsigned long done,
time_t start, time_t now)
{
float ratebs;
unsigned long eta;
char etastr[10];
int pct;
int len;
int elap;
elap = (unsigned long) difftime(now, start);
if (now > start)
ratebs = (float) done / elap;
else
ratebs = (float) done;
if (ratebs < 1.0)
eta = size - done;
else
eta = (unsigned long) ((size - done) / ratebs);
sprintf(etastr, "%02ld:%02ld:%02ld",
eta / 3600, (eta % 3600) / 60, eta % 60);
pct = (int) (100 * (done * 1.0 / size));
if (gui_mode)
/* GUI Adaptation - Sept 2000 */
gui_update_stats(name, size, pct, elap, done, eta,
(unsigned long) ratebs);
else {
len = printf("\r%-25.25s | %10ld kB | %5.1f kB/s | ETA: %8s | %3d%%",
name, done / 1024, ratebs / 1024.0, etastr, pct);
if (len < prev_stats_len)
printf("%*s", prev_stats_len - len, "");
prev_stats_len = len;
if (done == size)
printf("\n");
}
}
/*
* Find a colon in str and return a pointer to the colon.
* This is used to separate hostname from filename.
*/
static char *colon(char *str)
{
/* We ignore a leading colon, since the hostname cannot be
empty. We also ignore a colon as second character because
of filenames like f:myfile.txt. */
if (str[0] == '\0' || str[0] == ':' || str[1] == ':')
return (NULL);
while (*str != '\0' && *str != ':' && *str != '/' && *str != '\\')
str++;
if (*str == ':')
return (str);
else
return (NULL);
}
/*
* Return a pointer to the portion of str that comes after the last
* slash (or backslash or colon, if `local' is TRUE).
*/
static char *stripslashes(char *str, int local)
{
char *p;
if (local) {
p = strchr(str, ':');
if (p) str = p+1;
}
p = strrchr(str, '/');
if (p) str = p+1;
if (local) {
p = strrchr(str, '\\');
if (p) str = p+1;
}
return str;
}
/*
* Determine whether a string is entirely composed of dots.
*/
static int is_dots(char *str)
{
return str[strspn(str, ".")] == '\0';
}
/*
* Wait for a response from the other side.
* Return 0 if ok, -1 if error.
*/
static int response(void)
{
char ch, resp, rbuf[2048];
int p;
if (ssh_scp_recv(&resp, 1) <= 0)
bump("Lost connection");
p = 0;
switch (resp) {
case 0: /* ok */
return (0);
default:
rbuf[p++] = resp;
/* fallthrough */
case 1: /* error */
case 2: /* fatal error */
do {
if (ssh_scp_recv(&ch, 1) <= 0)
bump("Protocol error: Lost connection");
rbuf[p++] = ch;
} while (p < sizeof(rbuf) && ch != '\n');
rbuf[p - 1] = '\0';
if (resp == 1)
tell_user(stderr, "%s\n", rbuf);
else
bump("%s", rbuf);
errs++;
return (-1);
}
}
int sftp_recvdata(char *buf, int len)
{
return ssh_scp_recv(buf, len);
}
int sftp_senddata(char *buf, int len)
{
back->send(backhandle, (unsigned char *) buf, len);
return 1;
}
/* ----------------------------------------------------------------------
* sftp-based replacement for the hacky `pscp -ls'.
*/
static int sftp_ls_compare(const void *av, const void *bv)
{
const struct fxp_name *a = (const struct fxp_name *) av;
const struct fxp_name *b = (const struct fxp_name *) bv;
return strcmp(a->filename, b->filename);
}
void scp_sftp_listdir(char *dirname)
{
struct fxp_handle *dirh;
struct fxp_names *names;
struct fxp_name *ournames;
int nnames, namesize;
int i;
if (!fxp_init()) {
tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
errs++;
return;
}
printf("Listing directory %s\n", dirname);
dirh = fxp_opendir(dirname);
if (dirh == NULL) {
printf("Unable to open %s: %s\n", dirname, fxp_error());
} else {
nnames = namesize = 0;
ournames = NULL;
while (1) {
names = fxp_readdir(dirh);
if (names == NULL) {
if (fxp_error_type() == SSH_FX_EOF)
break;
printf("Reading directory %s: %s\n", dirname, fxp_error());
break;
}
if (names->nnames == 0) {
fxp_free_names(names);
break;
}
if (nnames + names->nnames >= namesize) {
namesize += names->nnames + 128;
ournames =
srealloc(ournames, namesize * sizeof(*ournames));
}
for (i = 0; i < names->nnames; i++)
ournames[nnames++] = names->names[i];
names->nnames = 0; /* prevent free_names */
fxp_free_names(names);
}
fxp_close(dirh);
/*
* Now we have our filenames. Sort them by actual file
* name, and then output the longname parts.
*/
qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare);
/*
* And print them.
*/
for (i = 0; i < nnames; i++)
printf("%s\n", ournames[i].longname);
}
}
/* ----------------------------------------------------------------------
* Helper routines that contain the actual SCP protocol elements,
* implemented both as SCP1 and SFTP.
*/
static struct scp_sftp_dirstack {
struct scp_sftp_dirstack *next;
struct fxp_name *names;
int namepos, namelen;
char *dirpath;
char *wildcard;
int matched_something; /* wildcard match set was non-empty */
} *scp_sftp_dirstack_head;
static char *scp_sftp_remotepath, *scp_sftp_currentname;
static char *scp_sftp_wildcard;
static int scp_sftp_targetisdir, scp_sftp_donethistarget;
static int scp_sftp_preserve, scp_sftp_recursive;
static unsigned long scp_sftp_mtime, scp_sftp_atime;
static int scp_has_times;
static struct fxp_handle *scp_sftp_filehandle;
static uint64 scp_sftp_fileoffset;
void scp_source_setup(char *target, int shouldbedir)
{
if (using_sftp) {
/*
* Find out whether the target filespec is in fact a
* directory.
*/
struct fxp_attrs attrs;
if (!fxp_init()) {
tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
errs++;
return;
}
if (!fxp_stat(target, &attrs) ||
!(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS))
scp_sftp_targetisdir = 0;
else
scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0;
if (shouldbedir && !scp_sftp_targetisdir) {
bump("pscp: remote filespec %s: not a directory\n", target);
}
scp_sftp_remotepath = dupstr(target);
scp_has_times = 0;
} else {
(void) response();
}
}
int scp_send_errmsg(char *str)
{
if (using_sftp) {
/* do nothing; we never need to send our errors to the server */
} else {
back->send(backhandle, "\001", 1);/* scp protocol error prefix */
back->send(backhandle, str, strlen(str));
}
return 0; /* can't fail */
}
int scp_send_filetimes(unsigned long mtime, unsigned long atime)
{
if (using_sftp) {
scp_sftp_mtime = mtime;
scp_sftp_atime = atime;
scp_has_times = 1;
return 0;
} else {
char buf[80];
sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime);
back->send(backhandle, buf, strlen(buf));
return response();
}
}
int scp_send_filename(char *name, unsigned long size, int modes)
{
if (using_sftp) {
char *fullname;
if (scp_sftp_targetisdir) {
fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
} else {
fullname = dupstr(scp_sftp_remotepath);
}
scp_sftp_filehandle =
fxp_open(fullname, SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC);
if (!scp_sftp_filehandle) {
tell_user(stderr, "pscp: unable to open %s: %s",
fullname, fxp_error());
errs++;
return 1;
}
scp_sftp_fileoffset = uint64_make(0, 0);
sfree(fullname);
return 0;
} else {
char buf[40];
sprintf(buf, "C%04o %lu ", modes, size);
back->send(backhandle, buf, strlen(buf));
back->send(backhandle, name, strlen(name));
back->send(backhandle, "\n", 1);
return response();
}
}
int scp_send_filedata(char *data, int len)
{
if (using_sftp) {
if (!scp_sftp_filehandle) {
return 1;
}
if (!fxp_write(scp_sftp_filehandle, data, scp_sftp_fileoffset, len)) {
tell_user(stderr, "error while writing: %s\n", fxp_error());
errs++;
return 1;
}
scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, len);
return 0;
} else {
int bufsize = back->send(backhandle, data, len);
/*
* If the network transfer is backing up - that is, the
* remote site is not accepting data as fast as we can
* produce it - then we must loop on network events until
* we have space in the buffer again.
*/
while (bufsize > MAX_SCP_BUFSIZE) {
if (!scp_process_network_event())
return 1;
bufsize = back->sendbuffer(backhandle);
}
return 0;
}
}
int scp_send_finish(void)
{
if (using_sftp) {
struct fxp_attrs attrs;
if (!scp_sftp_filehandle) {
return 1;
}
if (scp_has_times) {
attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME;
attrs.atime = scp_sftp_atime;
attrs.mtime = scp_sftp_mtime;
if (!fxp_fsetstat(scp_sftp_filehandle, attrs)) {
tell_user(stderr, "unable to set file times: %s\n", fxp_error());
errs++;
}
}
fxp_close(scp_sftp_filehandle);
scp_has_times = 0;
return 0;
} else {
back->send(backhandle, "", 1);
return response();
}
}
char *scp_save_remotepath(void)
{
if (using_sftp)
return scp_sftp_remotepath;
else
return NULL;
}
void scp_restore_remotepath(char *data)
{
if (using_sftp)
scp_sftp_remotepath = data;
}
int scp_send_dirname(char *name, int modes)
{
if (using_sftp) {
char *fullname;
char const *err;
struct fxp_attrs attrs;
if (scp_sftp_targetisdir) {
fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
} else {
fullname = dupstr(scp_sftp_remotepath);
}
/*
* We don't worry about whether we managed to create the
* directory, because if it exists already it's OK just to
* use it. Instead, we will stat it afterwards, and if it
* exists and is a directory we will assume we were either
* successful or it didn't matter.
*/
if (!fxp_mkdir(fullname))
err = fxp_error();
else
err = "server reported no error";
if (!fxp_stat(fullname, &attrs) ||
!(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) ||
!(attrs.permissions & 0040000)) {
tell_user(stderr, "unable to create directory %s: %s",
fullname, err);
errs++;
return 1;
}
scp_sftp_remotepath = fullname;
return 0;
} else {
char buf[40];
sprintf(buf, "D%04o 0 ", modes);
back->send(backhandle, buf, strlen(buf));
back->send(backhandle, name, strlen(name));
back->send(backhandle, "\n", 1);
return response();
}
}
int scp_send_enddir(void)
{
if (using_sftp) {
sfree(scp_sftp_remotepath);
return 0;
} else {
back->send(backhandle, "E\n", 2);
return response();
}
}
/*
* Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
* That's bad. The difference is that scp_sink_setup is called once
* right at the start, whereas scp_sink_init is called to
* initialise every level of recursion in the protocol.
*/
int scp_sink_setup(char *source, int preserve, int recursive)
{
if (using_sftp) {
char *newsource;
if (!fxp_init()) {
tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
errs++;
return 1;
}
/*
* It's possible that the source string we've been given
* contains a wildcard. If so, we must split the directory
* away from the wildcard itself (throwing an error if any
* wildcardness comes before the final slash) and arrange
* things so that a dirstack entry will be set up.
*/
newsource = smalloc(1+strlen(source));
if (!wc_unescape(newsource, source)) {
/* Yes, here we go; it's a wildcard. Bah. */
char *dupsource, *lastpart, *dirpart, *wildcard;
dupsource = dupstr(source);
lastpart = stripslashes(dupsource, 0);
wildcard = dupstr(lastpart);
*lastpart = '\0';
if (*dupsource && dupsource[1]) {
/*
* The remains of dupsource are at least two
* characters long, meaning the pathname wasn't
* empty or just `/'. Hence, we remove the trailing
* slash.
*/
lastpart[-1] = '\0';
} else if (!*dupsource) {
/*
* The remains of dupsource are _empty_ - the whole
* pathname was a wildcard. Hence we need to
* replace it with ".".
*/
sfree(dupsource);
dupsource = dupstr(".");
}
/*
* Now we have separated our string into dupsource (the
* directory part) and wildcard. Both of these will
* need freeing at some point. Next step is to remove
* wildcard escapes from the directory part, throwing
* an error if it contains a real wildcard.
*/
dirpart = smalloc(1+strlen(dupsource));
if (!wc_unescape(dirpart, dupsource)) {
tell_user(stderr, "%s: multiple-level wildcards unsupported",
source);
errs++;
sfree(dirpart);
sfree(wildcard);
sfree(dupsource);
return 1;
}
/*
* Now we have dirpart (unescaped, ie a valid remote
* path), and wildcard (a wildcard). This will be
* sufficient to arrange a dirstack entry.
*/
scp_sftp_remotepath = dirpart;
scp_sftp_wildcard = wildcard;
sfree(dupsource);
} else {
scp_sftp_remotepath = newsource;
scp_sftp_wildcard = NULL;
}
scp_sftp_preserve = preserve;
scp_sftp_recursive = recursive;
scp_sftp_donethistarget = 0;
scp_sftp_dirstack_head = NULL;
}
return 0;
}
int scp_sink_init(void)
{
if (!using_sftp) {
back->send(backhandle, "", 1);
}
return 0;
}
#define SCP_SINK_FILE 1
#define SCP_SINK_DIR 2
#define SCP_SINK_ENDDIR 3
#define SCP_SINK_RETRY 4 /* not an action; just try again */
struct scp_sink_action {
int action; /* FILE, DIR, ENDDIR */
char *buf; /* will need freeing after use */
char *name; /* filename or dirname (not ENDDIR) */
int mode; /* access mode (not ENDDIR) */
unsigned long size; /* file size (not ENDDIR) */
int settime; /* 1 if atime and mtime are filled */
unsigned long atime, mtime; /* access times for the file */
};
int scp_get_sink_action(struct scp_sink_action *act)
{
if (using_sftp) {
char *fname;
int must_free_fname;
struct fxp_attrs attrs;
int ret;
if (!scp_sftp_dirstack_head) {
if (!scp_sftp_donethistarget) {
/*
* Simple case: we are only dealing with one file.
*/
fname = scp_sftp_remotepath;
must_free_fname = 0;
scp_sftp_donethistarget = 1;
} else {
/*
* Even simpler case: one file _which we've done_.
* Return 1 (finished).
*/
return 1;
}
} else {
/*
* We're now in the middle of stepping through a list
* of names returned from fxp_readdir(); so let's carry
* on.
*/
struct scp_sftp_dirstack *head = scp_sftp_dirstack_head;
while (head->namepos < head->namelen &&
(is_dots(head->names[head->namepos].filename) ||
(head->wildcard &&
!wc_match(head->wildcard,
head->names[head->namepos].filename))))
head->namepos++; /* skip . and .. */
if (head->namepos < head->namelen) {
head->matched_something = 1;
fname = dupcat(head->dirpath, "/",
head->names[head->namepos++].filename,
NULL);
must_free_fname = 1;
} else {
/*
* We've come to the end of the list; pop it off
* the stack and return an ENDDIR action (or RETRY
* if this was a wildcard match).
*/
if (head->wildcard) {
act->action = SCP_SINK_RETRY;
if (!head->matched_something) {
tell_user(stderr, "pscp: wildcard '%s' matched "
"no files", head->wildcard);
errs++;
}
sfree(head->wildcard);
} else {
act->action = SCP_SINK_ENDDIR;
}
sfree(head->dirpath);
sfree(head->names);
scp_sftp_dirstack_head = head->next;
sfree(head);
return 0;
}
}
/*
* Now we have a filename. Stat it, and see if it's a file
* or a directory.
*/
ret = fxp_stat(fname, &attrs);
if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) {
tell_user(stderr, "unable to identify %s: %s", fname,
ret ? "file type not supplied" : fxp_error());
errs++;
return 1;
}
if (attrs.permissions & 0040000) {
struct scp_sftp_dirstack *newitem;
struct fxp_handle *dirhandle;
int nnames, namesize;
struct fxp_name *ournames;
struct fxp_names *names;
/*
* It's a directory. If we're not in recursive mode,
* this merits a complaint (which is fatal if the name
* was specified directly, but not if it was matched by
* a wildcard).
*
* We skip this complaint completely if
* scp_sftp_wildcard is set, because that's an
* indication that we're not actually supposed to
* _recursively_ transfer the dir, just scan it for
* things matching the wildcard.
*/
if (!scp_sftp_recursive && !scp_sftp_wildcard) {
tell_user(stderr, "pscp: %s: is a directory", fname);
errs++;
if (must_free_fname) sfree(fname);
if (scp_sftp_dirstack_head) {
act->action = SCP_SINK_RETRY;
return 0;
} else {
return 1;
}
}
/*
* Otherwise, the fun begins. We must fxp_opendir() the
* directory, slurp the filenames into memory, return
* SCP_SINK_DIR (unless this is a wildcard match), and
* set targetisdir. The next time we're called, we will
* run through the list of filenames one by one,
* matching them against a wildcard if present.
*
* If targetisdir is _already_ set (meaning we're
* already in the middle of going through another such
* list), we must push the other (target,namelist) pair
* on a stack.
*/
dirhandle = fxp_opendir(fname);
if (!dirhandle) {
tell_user(stderr, "scp: unable to open directory %s: %s",
fname, fxp_error());
if (must_free_fname) sfree(fname);
errs++;
return 1;
}
nnames = namesize = 0;
ournames = NULL;
while (1) {
int i;
names = fxp_readdir(dirhandle);
if (names == NULL) {
if (fxp_error_type() == SSH_FX_EOF)
break;
tell_user(stderr, "scp: reading directory %s: %s\n",
fname, fxp_error());
if (must_free_fname) sfree(fname);
sfree(ournames);
errs++;
return 1;
}
if (names->nnames == 0) {
fxp_free_names(names);
break;
}
if (nnames + names->nnames >= namesize) {
namesize += names->nnames + 128;
ournames =
srealloc(ournames, namesize * sizeof(*ournames));
}
for (i = 0; i < names->nnames; i++)
ournames[nnames++] = names->names[i];
names->nnames = 0; /* prevent free_names */
fxp_free_names(names);
}
fxp_close(dirhandle);
newitem = smalloc(sizeof(struct scp_sftp_dirstack));
newitem->next = scp_sftp_dirstack_head;
newitem->names = ournames;
newitem->namepos = 0;
newitem->namelen = nnames;
if (must_free_fname)
newitem->dirpath = fname;
else
newitem->dirpath = dupstr(fname);
if (scp_sftp_wildcard) {
newitem->wildcard = scp_sftp_wildcard;
newitem->matched_something = 0;
scp_sftp_wildcard = NULL;
} else {
newitem->wildcard = NULL;
}
scp_sftp_dirstack_head = newitem;
if (newitem->wildcard) {
act->action = SCP_SINK_RETRY;
} else {
act->action = SCP_SINK_DIR;
act->buf = dupstr(stripslashes(fname, 0));
act->name = act->buf;
act->size = 0; /* duhh, it's a directory */
act->mode = 07777 & attrs.permissions;
if (scp_sftp_preserve &&
(attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
act->atime = attrs.atime;
act->mtime = attrs.mtime;
act->settime = 1;
} else
act->settime = 0;
}
return 0;
} else {
/*
* It's a file. Return SCP_SINK_FILE.
*/
act->action = SCP_SINK_FILE;
act->buf = dupstr(stripslashes(fname, 0));
act->name = act->buf;
if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) {
if (uint64_compare(attrs.size,
uint64_make(0, ULONG_MAX)) > 0) {
act->size = ULONG_MAX; /* *boggle* */
} else
act->size = attrs.size.lo;
} else
act->size = ULONG_MAX; /* no idea */
act->mode = 07777 & attrs.permissions;
if (scp_sftp_preserve &&
(attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
act->atime = attrs.atime;
act->mtime = attrs.mtime;
act->settime = 1;
} else
act->settime = 0;
if (must_free_fname)
scp_sftp_currentname = fname;
else
scp_sftp_currentname = dupstr(fname);
return 0;
}
} else {
int done = 0;
int i, bufsize;
int action;
char ch;
act->settime = 0;
act->buf = NULL;
bufsize = 0;
while (!done) {
if (ssh_scp_recv(&ch, 1) <= 0)
return 1;
if (ch == '\n')
bump("Protocol error: Unexpected newline");
i = 0;
action = ch;
do {
if (ssh_scp_recv(&ch, 1) <= 0)
bump("Lost connection");
if (i >= bufsize) {
bufsize = i + 128;
act->buf = srealloc(act->buf, bufsize);
}
act->buf[i++] = ch;
} while (ch != '\n');
act->buf[i - 1] = '\0';
switch (action) {
case '\01': /* error */
tell_user(stderr, "%s\n", act->buf);
errs++;
continue; /* go round again */
case '\02': /* fatal error */
bump("%s", act->buf);
case 'E':
back->send(backhandle, "", 1);
act->action = SCP_SINK_ENDDIR;
return 0;
case 'T':
if (sscanf(act->buf, "%ld %*d %ld %*d",
&act->mtime, &act->atime) == 2) {
act->settime = 1;
back->send(backhandle, "", 1);
continue; /* go round again */
}
bump("Protocol error: Illegal time format");
case 'C':
case 'D':
act->action = (action == 'C' ? SCP_SINK_FILE : SCP_SINK_DIR);
break;
default:
bump("Protocol error: Expected control record");
}
/*
* We will go round this loop only once, unless we hit
* `continue' above.
*/
done = 1;
}
/*
* If we get here, we must have seen SCP_SINK_FILE or
* SCP_SINK_DIR.
*/
if (sscanf(act->buf, "%o %lu %n", &act->mode, &act->size, &i) != 2)
bump("Protocol error: Illegal file descriptor format");
act->name = act->buf + i;
return 0;
}
}
int scp_accept_filexfer(void)
{
if (using_sftp) {
scp_sftp_filehandle =
fxp_open(scp_sftp_currentname, SSH_FXF_READ);
if (!scp_sftp_filehandle) {
tell_user(stderr, "pscp: unable to open %s: %s",
scp_sftp_currentname, fxp_error());
errs++;
return 1;
}
scp_sftp_fileoffset = uint64_make(0, 0);
sfree(scp_sftp_currentname);
return 0;
} else {
back->send(backhandle, "", 1);
return 0; /* can't fail */
}
}
int scp_recv_filedata(char *data, int len)
{
if (using_sftp) {
int actuallen = fxp_read(scp_sftp_filehandle, data,
scp_sftp_fileoffset, len);
if (actuallen == -1 && fxp_error_type() != SSH_FX_EOF) {
tell_user(stderr, "pscp: error while reading: %s", fxp_error());
errs++;
return -1;
}
if (actuallen < 0)
actuallen = 0;
scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, actuallen);
return actuallen;
} else {
return ssh_scp_recv(data, len);
}
}
int scp_finish_filerecv(void)
{
if (using_sftp) {
fxp_close(scp_sftp_filehandle);
return 0;
} else {
back->send(backhandle, "", 1);
return response();
}
}
/* ----------------------------------------------------------------------
* Send an error message to the other side and to the screen.
* Increment error counter.
*/
static void run_err(const char *fmt, ...)
{
char str[2048];
va_list ap;
va_start(ap, fmt);
errs++;
strcpy(str, "scp: ");
vsprintf(str + strlen(str), fmt, ap);
strcat(str, "\n");
scp_send_errmsg(str);
tell_user(stderr, "%s", str);
va_end(ap);
}
/*
* Execute the source part of the SCP protocol.
*/
static void source(char *src)
{
unsigned long size;
char *last;
HANDLE f;
DWORD attr;
unsigned long i;
unsigned long stat_bytes;
time_t stat_starttime, stat_lasttime;
attr = GetFileAttributes(src);
if (attr == (DWORD) - 1) {
run_err("%s: No such file or directory", src);
return;
}
if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) {
if (recursive) {
/*
* Avoid . and .. directories.
*/
char *p;
p = strrchr(src, '/');
if (!p)
p = strrchr(src, '\\');
if (!p)
p = src;
else
p++;
if (!strcmp(p, ".") || !strcmp(p, ".."))
/* skip . and .. */ ;
else
rsource(src);
} else {
run_err("%s: not a regular file", src);
}
return;
}
if ((last = strrchr(src, '/')) == NULL)
last = src;
else
last++;
if (strrchr(last, '\\') != NULL)
last = strrchr(last, '\\') + 1;
if (last == src && strchr(src, ':') != NULL)
last = strchr(src, ':') + 1;
f = CreateFile(src, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, 0, 0);
if (f == INVALID_HANDLE_VALUE) {
run_err("%s: Cannot open file", src);
return;
}
if (preserve) {
FILETIME actime, wrtime;
unsigned long mtime, atime;
GetFileTime(f, NULL, &actime, &wrtime);
TIME_WIN_TO_POSIX(actime, atime);
TIME_WIN_TO_POSIX(wrtime, mtime);
if (scp_send_filetimes(mtime, atime))
return;
}
size = GetFileSize(f, NULL);
if (verbose)
tell_user(stderr, "Sending file %s, size=%lu", last, size);
if (scp_send_filename(last, size, 0644))
return;
stat_bytes = 0;
stat_starttime = time(NULL);
stat_lasttime = 0;
for (i = 0; i < size; i += 4096) {
char transbuf[4096];
DWORD j, k = 4096;
if (i + k > size)
k = size - i;
if (!ReadFile(f, transbuf, k, &j, NULL) || j != k) {
if (statistics)
printf("\n");
bump("%s: Read error", src);
}
if (scp_send_filedata(transbuf, k))
bump("%s: Network error occurred", src);
if (statistics) {
stat_bytes += k;
if (time(NULL) != stat_lasttime || i + k == size) {
stat_lasttime = time(NULL);
print_stats(last, size, stat_bytes,
stat_starttime, stat_lasttime);
}
}
}
CloseHandle(f);
(void) scp_send_finish();
}
/*
* Recursively send the contents of a directory.
*/
static void rsource(char *src)
{
char *last, *findfile;
char *save_target;
HANDLE dir;
WIN32_FIND_DATA fdat;
int ok;
if ((last = strrchr(src, '/')) == NULL)
last = src;
else
last++;
if (strrchr(last, '\\') != NULL)
last = strrchr(last, '\\') + 1;
if (last == src && strchr(src, ':') != NULL)
last = strchr(src, ':') + 1;
/* maybe send filetime */
save_target = scp_save_remotepath();
if (verbose)
tell_user(stderr, "Entering directory: %s", last);
if (scp_send_dirname(last, 0755))
return;
findfile = dupcat(src, "/*", NULL);
dir = FindFirstFile(findfile, &fdat);
ok = (dir != INVALID_HANDLE_VALUE);
while (ok) {
if (strcmp(fdat.cFileName, ".") == 0 ||
strcmp(fdat.cFileName, "..") == 0) {
/* ignore . and .. */
} else {
char *foundfile = dupcat(src, "/", fdat.cFileName, NULL);
source(foundfile);
sfree(foundfile);
}
ok = FindNextFile(dir, &fdat);
}
FindClose(dir);
sfree(findfile);
(void) scp_send_enddir();
scp_restore_remotepath(save_target);
}
/*
* Execute the sink part of the SCP protocol.
*/
static void sink(char *targ, char *src)
{
char *destfname;
int targisdir = 0;
int exists;
DWORD attr;
HANDLE f;
unsigned long received;
int wrerror = 0;
unsigned long stat_bytes;
time_t stat_starttime, stat_lasttime;
char *stat_name;
attr = GetFileAttributes(targ);
if (attr != (DWORD) - 1 && (attr & FILE_ATTRIBUTE_DIRECTORY) != 0)
targisdir = 1;
if (targetshouldbedirectory && !targisdir)
bump("%s: Not a directory", targ);
scp_sink_init();
while (1) {
struct scp_sink_action act;
if (scp_get_sink_action(&act))
return;
if (act.action == SCP_SINK_ENDDIR)
return;
if (act.action == SCP_SINK_RETRY)
continue;
if (targisdir) {
/*
* Prevent the remote side from maliciously writing to
* files outside the target area by sending a filename
* containing `../'. In fact, it shouldn't be sending
* filenames with any slashes or colons in at all; so
* we'll find the last slash, backslash or colon in the
* filename and use only the part after that. (And
* warn!)
*
* In addition, we also ensure here that if we're
* copying a single file and the target is a directory
* (common usage: `pscp host:filename .') the remote
* can't send us a _different_ file name. We can
* distinguish this case because `src' will be non-NULL
* and the last component of that will fail to match
* (the last component of) the name sent.
*
* Well, not always; if `src' is a wildcard, we do
* expect to get back filenames that don't correspond
* exactly to it. Ideally in this case, we would like
* to ensure that the returned filename actually
* matches the wildcard pattern - but one of SCP's
* protocol infelicities is that wildcard matching is
* done at the server end _by the server's rules_ and
* so in general this is infeasible. Hence, we only
* accept filenames that don't correspond to `src' if
* unsafe mode is enabled or we are using SFTP (which
* resolves remote wildcards on the client side and can
* be trusted).
*/
char *striptarget, *stripsrc;
striptarget = stripslashes(act.name, 1);
if (striptarget != act.name) {
tell_user(stderr, "warning: remote host sent a compound"
" pathname '%s'", act.name);
tell_user(stderr, " renaming local file to '%s'",
striptarget);
}
/*
* Also check to see if the target filename is '.' or
* '..', or indeed '...' and so on because Windows
* appears to interpret those like '..'.
*/
if (is_dots(striptarget)) {
bump("security violation: remote host attempted to write to"
" a '.' or '..' path!");
}
if (src) {
stripsrc = stripslashes(src, 1);
if (strcmp(striptarget, stripsrc) &&
!using_sftp && !scp_unsafe_mode) {
tell_user(stderr, "warning: remote host tried to write "
"to a file called '%s'", striptarget);
tell_user(stderr, " when we requested a file "
"called '%s'.", stripsrc);
tell_user(stderr, " If this is a wildcard, "
"consider upgrading to SSH 2 or using");
tell_user(stderr, " the '-unsafe' option. Renaming"
" of this file has been disallowed.");
/* Override the name the server provided with our own. */
striptarget = stripsrc;
}
}
if (targ[0] != '\0')
destfname = dupcat(targ, "\\", striptarget, NULL);
else
destfname = dupstr(striptarget);
} else {
/*
* In this branch of the if, the target area is a
* single file with an explicitly specified name in any
* case, so there's no danger.
*/
destfname = dupstr(targ);
}
attr = GetFileAttributes(destfname);
exists = (attr != (DWORD) - 1);
if (act.action == SCP_SINK_DIR) {
if (exists && (attr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
run_err("%s: Not a directory", destfname);
continue;
}
if (!exists) {
if (!CreateDirectory(destfname, NULL)) {
run_err("%s: Cannot create directory", destfname);
continue;
}
}
sink(destfname, NULL);
/* can we set the timestamp for directories ? */
continue;
}
f = CreateFile(destfname, GENERIC_WRITE, 0, NULL,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
if (f == INVALID_HANDLE_VALUE) {
run_err("%s: Cannot create file", destfname);
continue;
}
if (scp_accept_filexfer())
return;
stat_bytes = 0;
stat_starttime = time(NULL);
stat_lasttime = 0;
stat_name = stripslashes(destfname, 1);
received = 0;
while (received < act.size) {
char transbuf[4096];
DWORD blksize, read, written;
blksize = 4096;
if (blksize > act.size - received)
blksize = act.size - received;
read = scp_recv_filedata(transbuf, blksize);
if (read <= 0)
bump("Lost connection");
if (wrerror)
continue;
if (!WriteFile(f, transbuf, read, &written, NULL) ||
written != read) {
wrerror = 1;
/* FIXME: in sftp we can actually abort the transfer */
if (statistics)
printf("\r%-25.25s | %50s\n",
stat_name,
"Write error.. waiting for end of file");
continue;
}
if (statistics) {
stat_bytes += read;
if (time(NULL) > stat_lasttime ||
received + read == act.size) {
stat_lasttime = time(NULL);
print_stats(stat_name, act.size, stat_bytes,
stat_starttime, stat_lasttime);
}
}
received += read;
}
if (act.settime) {
FILETIME actime, wrtime;
TIME_POSIX_TO_WIN(act.atime, actime);
TIME_POSIX_TO_WIN(act.mtime, wrtime);
SetFileTime(f, NULL, &actime, &wrtime);
}
CloseHandle(f);
if (wrerror) {
run_err("%s: Write error", destfname);
continue;
}
(void) scp_finish_filerecv();
sfree(destfname);
sfree(act.buf);
}
}
/*
* We will copy local files to a remote server.
*/
static void toremote(int argc, char *argv[])
{
char *src, *targ, *host, *user;
char *cmd;
int i;
targ = argv[argc - 1];
/* Separate host from filename */
host = targ;
targ = colon(targ);
if (targ == NULL)
bump("targ == NULL in toremote()");
*targ++ = '\0';
if (*targ == '\0')
targ = ".";
/* Substitute "." for emtpy target */
/* Separate host and username */
user = host;
host = strrchr(host, '@');
if (host == NULL) {
host = user;
user = NULL;
} else {
*host++ = '\0';
if (*user == '\0')
user = NULL;
}
if (argc == 2) {
/* Find out if the source filespec covers multiple files
if so, we should set the targetshouldbedirectory flag */
HANDLE fh;
WIN32_FIND_DATA fdat;
if (colon(argv[0]) != NULL)
bump("%s: Remote to remote not supported", argv[0]);
fh = FindFirstFile(argv[0], &fdat);
if (fh == INVALID_HANDLE_VALUE)
bump("%s: No such file or directory\n", argv[0]);
if (FindNextFile(fh, &fdat))
targetshouldbedirectory = 1;
FindClose(fh);
}
cmd = smalloc(strlen(targ) + 100);
sprintf(cmd, "scp%s%s%s%s -t %s",
verbose ? " -v" : "",
recursive ? " -r" : "",
preserve ? " -p" : "",
targetshouldbedirectory ? " -d" : "", targ);
do_cmd(host, user, cmd);
sfree(cmd);
scp_source_setup(targ, targetshouldbedirectory);
for (i = 0; i < argc - 1; i++) {
char *srcpath, *last;
HANDLE dir;
WIN32_FIND_DATA fdat;
src = argv[i];
if (colon(src) != NULL) {
tell_user(stderr, "%s: Remote to remote not supported\n", src);
errs++;
continue;
}
/*
* Trim off the last pathname component of `src', to
* provide the base pathname which will be prepended to
* filenames returned from Find{First,Next}File.
*/
srcpath = dupstr(src);
last = stripslashes(srcpath, 1);
*last = '\0';
dir = FindFirstFile(src, &fdat);
if (dir == INVALID_HANDLE_VALUE) {
run_err("%s: No such file or directory", src);
continue;
}
do {
char *filename;
/*
* Ensure that . and .. are never matched by wildcards,
* but only by deliberate action.
*/
if (!strcmp(fdat.cFileName, ".") ||
!strcmp(fdat.cFileName, "..")) {
/*
* Find*File has returned a special dir. We require
* that _either_ `src' ends in a backslash followed
* by that string, _or_ `src' is precisely that
* string.
*/
int len = strlen(src), dlen = strlen(fdat.cFileName);
if (len == dlen && !strcmp(src, fdat.cFileName)) {
/* ok */ ;
} else if (len > dlen + 1 && src[len - dlen - 1] == '\\' &&
!strcmp(src + len - dlen, fdat.cFileName)) {
/* ok */ ;
} else
continue; /* ignore this one */
}
filename = dupcat(srcpath, fdat.cFileName, NULL);
source(filename);
sfree(filename);
} while (FindNextFile(dir, &fdat));
FindClose(dir);
sfree(srcpath);
}
}
/*
* We will copy files from a remote server to the local machine.
*/
static void tolocal(int argc, char *argv[])
{
char *src, *targ, *host, *user;
char *cmd;
if (argc != 2)
bump("More than one remote source not supported");
src = argv[0];
targ = argv[1];
/* Separate host from filename */
host = src;
src = colon(src);
if (src == NULL)
bump("Local to local copy not supported");
*src++ = '\0';
if (*src == '\0')
src = ".";
/* Substitute "." for empty filename */
/* Separate username and hostname */
user = host;
host = strrchr(host, '@');
if (host == NULL) {
host = user;
user = NULL;
} else {
*host++ = '\0';
if (*user == '\0')
user = NULL;
}
cmd = smalloc(strlen(src) + 100);
sprintf(cmd, "scp%s%s%s%s -f %s",
verbose ? " -v" : "",
recursive ? " -r" : "",
preserve ? " -p" : "",
targetshouldbedirectory ? " -d" : "", src);
do_cmd(host, user, cmd);
sfree(cmd);
if (scp_sink_setup(src, preserve, recursive))
return;
sink(targ, src);
}
/*
* We will issue a list command to get a remote directory.
*/
static void get_dir_list(int argc, char *argv[])
{
char *src, *host, *user;
char *cmd, *p, *q;
char c;
src = argv[0];
/* Separate host from filename */
host = src;
src = colon(src);
if (src == NULL)
bump("Local to local copy not supported");
*src++ = '\0';
if (*src == '\0')
src = ".";
/* Substitute "." for empty filename */
/* Separate username and hostname */
user = host;
host = strrchr(host, '@');
if (host == NULL) {
host = user;
user = NULL;
} else {
*host++ = '\0';
if (*user == '\0')
user = NULL;
}
cmd = smalloc(4 * strlen(src) + 100);
strcpy(cmd, "ls -la '");
p = cmd + strlen(cmd);
for (q = src; *q; q++) {
if (*q == '\'') {
*p++ = '\'';
*p++ = '\\';
*p++ = '\'';
*p++ = '\'';
} else {
*p++ = *q;
}
}
*p++ = '\'';
*p = '\0';
do_cmd(host, user, cmd);
sfree(cmd);
if (using_sftp) {
scp_sftp_listdir(src);
} else {
while (ssh_scp_recv(&c, 1) > 0)
tell_char(stdout, c);
}
}
/*
* Initialize the Win$ock driver.
*/
static void init_winsock(void)
{
WORD winsock_ver;
WSADATA wsadata;
winsock_ver = MAKEWORD(1, 1);
if (WSAStartup(winsock_ver, &wsadata))
bump("Unable to initialise WinSock");
if (LOBYTE(wsadata.wVersion) != 1 || HIBYTE(wsadata.wVersion) != 1)
bump("WinSock version is incompatible with 1.1");
}
/*
* Short description of parameters.
*/
static void usage(void)
{
printf("PuTTY Secure Copy client\n");
printf("%s\n", ver);
printf("Usage: pscp [options] [user@]host:source target\n");
printf
(" pscp [options] source [source...] [user@]host:target\n");
printf(" pscp [options] -ls user@host:filespec\n");
printf("Options:\n");
printf(" -p preserve file attributes\n");
printf(" -q quiet, don't show statistics\n");
printf(" -r copy directories recursively\n");
printf(" -v show verbose messages\n");
printf(" -load sessname Load settings from saved session\n");
printf(" -P port connect to specified port\n");
printf(" -l user connect with specified username\n");
printf(" -pw passw login with specified password\n");
printf(" -1 -2 force use of particular SSH protocol version\n");
printf(" -C enable compression\n");
printf(" -i key private key file for authentication\n");
printf(" -batch disable all interactive prompts\n");
printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
#if 0
/*
* -gui is an internal option, used by GUI front ends to get
* pscp to pass progress reports back to them. It's not an
* ordinary user-accessible option, so it shouldn't be part of
* the command-line help. The only people who need to know
* about it are programmers, and they can read the source.
*/
printf
(" -gui hWnd GUI mode with the windows handle for receiving messages\n");
#endif
cleanup_exit(1);
}
void cmdline_error(char *p, ...)
{
va_list ap;
fprintf(stderr, "pscp: ");
va_start(ap, p);
vfprintf(stderr, p, ap);
va_end(ap);
fputc('\n', stderr);
exit(1);
}
/*
* Main program (no, really?)
*/
int main(int argc, char *argv[])
{
int i;
default_protocol = PROT_TELNET;
flags = FLAG_STDERR;
cmdline_tooltype = TOOLTYPE_FILETRANSFER;
ssh_get_line = &console_get_line;
init_winsock();
sk_init();
for (i = 1; i < argc; i++) {
int ret;
if (argv[i][0] != '-')
break;
ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1);
if (ret == -2) {
cmdline_error("option \"%s\" requires an argument", argv[i]);
} else if (ret == 2) {
i++; /* skip next argument */
} else if (ret == 1) {
/* We have our own verbosity in addition to `flags'. */
if (flags & FLAG_VERBOSE)
verbose = 1;
} else if (strcmp(argv[i], "-r") == 0) {
recursive = 1;
} else if (strcmp(argv[i], "-p") == 0) {
preserve = 1;
} else if (strcmp(argv[i], "-q") == 0) {
statistics = 0;
} else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-?") == 0) {
usage();
} else if (strcmp(argv[i], "-gui") == 0 && i + 1 < argc) {
gui_hwnd = argv[++i];
gui_mode = 1;
console_batch_mode = TRUE;
} else if (strcmp(argv[i], "-ls") == 0) {
list = 1;
} else if (strcmp(argv[i], "-batch") == 0) {
console_batch_mode = 1;
} else if (strcmp(argv[i], "-unsafe") == 0) {
scp_unsafe_mode = 1;
} else if (strcmp(argv[i], "--") == 0) {
i++;
break;
} else
usage();
}
argc -= i;
argv += i;
back = NULL;
if (list) {
if (argc != 1)
usage();
get_dir_list(argc, argv);
} else {
if (argc < 2)
usage();
if (argc > 2)
targetshouldbedirectory = 1;
if (colon(argv[argc - 1]) != NULL)
toremote(argc, argv);
else
tolocal(argc, argv);
}
if (back != NULL && back->socket(backhandle) != NULL) {
char ch;
back->special(backhandle, TS_EOF);
ssh_scp_recv(&ch, 1);
}
WSACleanup();
random_save_seed();
/* GUI Adaptation - August 2000 */
if (gui_mode) {
unsigned int msg_id = WM_RET_ERR_CNT;
if (list)
msg_id = WM_LS_RET_ERR_CNT;
while (!PostMessage
((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs,
0 /*lParam */ ))SleepEx(1000, TRUE);
}
return (errs == 0 ? 0 : 1);
}
/* end */
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