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scp.c
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scp.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, *str2;
va_list ap;
va_start(ap, fmt);
str = dupvprintf(fmt, ap);
va_end(ap);
str2 = dupcat(str, "\n", NULL);
sfree(str);
tell_str(stream, str2);
sfree(str2);
}
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, *str2;
va_list ap;
va_start(ap, fmt);
str = dupvprintf(fmt, ap);
str2 = dupcat("Fatal: ", str, "\n", NULL);
sfree(str);
va_end(ap);
tell_str(stderr, str2);
sfree(str2);
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, *str2;
va_list ap;
va_start(ap, fmt);
str = dupvprintf(fmt, ap);
str2 = dupcat("Fatal: ", str, "\n", NULL);
sfree(str);
va_end(ap);
tell_str(stderr, str2);
sfree(str2);
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, *str2;
va_list ap;
va_start(ap, fmt);
str = dupvprintf(fmt, ap);
str2 = dupcat("Fatal: ", str, "\n", NULL);
sfree(str);
va_end(ap);
tell_str(stderr, str2);
sfree(str2);
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, *str2;
va_list ap;
va_start(ap, fmt);
str = dupvprintf(fmt, ap);
va_end(ap);
str2 = dupcat(str, "\n", NULL);
sfree(str);
tell_str(stderr, str2);
sfree(str2);
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