2 * scp.c - Scp (Secure Copy) client for PuTTY.
3 * Joris van Rantwijk, Simon Tatham
5 * This is mainly based on ssh-1.2.26/scp.c by Timo Rinne & Tatu Ylonen.
6 * They, in turn, used stuff from BSD rcp.
8 * (SGT, 2001-09-10: Joris van Rantwijk assures me that although
9 * this file as originally submitted was inspired by, and
10 * _structurally_ based on, ssh-1.2.26's scp.c, there wasn't any
11 * actual code duplicated, so the above comment shouldn't give rise
12 * to licensing issues.)
22 #define PUTTY_DO_GLOBALS
30 static int verbose = 0;
31 static int recursive = 0;
32 static int preserve = 0;
33 static int targetshouldbedirectory = 0;
34 static int statistics = 1;
35 static int prev_stats_len = 0;
36 static int scp_unsafe_mode = 0;
38 static int gui_mode = 0;
39 static int try_scp = 1;
40 static int try_sftp = 1;
41 static int main_cmd_is_sftp = 0;
42 static int fallback_cmd_is_sftp = 0;
43 static int using_sftp = 0;
46 static void *backhandle;
49 static void source(char *src);
50 static void rsource(char *src);
51 static void sink(char *targ, char *src);
54 * The maximum amount of queued data we accept before we stop and
55 * wait for the server to process some.
57 #define MAX_SCP_BUFSIZE 16384
59 void ldisc_send(void *handle, char *buf, int len, int interactive)
62 * This is only here because of the calls to ldisc_send(NULL,
63 * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc
64 * as an ldisc. So if we get called with any real data, I want
70 static void tell_char(FILE * stream, char c)
75 gui_send_char(stream == stderr, c);
78 static void tell_str(FILE * stream, char *str)
82 for (i = 0; i < strlen(str); ++i)
83 tell_char(stream, str[i]);
86 static void tell_user(FILE * stream, char *fmt, ...)
91 str = dupvprintf(fmt, ap);
93 str2 = dupcat(str, "\n", NULL);
95 tell_str(stream, str2);
100 * Print an error message and perform a fatal exit.
102 void fatalbox(char *fmt, ...)
107 str = dupvprintf(fmt, ap);
108 str2 = dupcat("Fatal: ", str, "\n", NULL);
111 tell_str(stderr, str2);
116 gui_send_errcount(list, errs);
120 void modalfatalbox(char *fmt, ...)
125 str = dupvprintf(fmt, ap);
126 str2 = dupcat("Fatal: ", str, "\n", NULL);
129 tell_str(stderr, str2);
134 gui_send_errcount(list, errs);
138 void connection_fatal(void *frontend, char *fmt, ...)
143 str = dupvprintf(fmt, ap);
144 str2 = dupcat("Fatal: ", str, "\n", NULL);
147 tell_str(stderr, str2);
152 gui_send_errcount(list, errs);
158 * In pscp, all agent requests should be synchronous, so this is a
161 void agent_schedule_callback(void (*callback)(void *, void *, int),
162 void *callback_ctx, void *data, int len)
164 assert(!"We shouldn't be here");
168 * Receive a block of data from the SSH link. Block until all data
171 * To do this, we repeatedly call the SSH protocol module, with our
172 * own trap in from_backend() to catch the data that comes back. We
173 * do this until we have enough data.
176 static unsigned char *outptr; /* where to put the data */
177 static unsigned outlen; /* how much data required */
178 static unsigned char *pending = NULL; /* any spare data */
179 static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */
180 int from_backend(void *frontend, int is_stderr, const char *data, int datalen)
182 unsigned char *p = (unsigned char *) data;
183 unsigned len = (unsigned) datalen;
186 * stderr data is just spouted to local stderr and otherwise
191 fwrite(data, 1, len, stderr);
196 * If this is before the real session begins, just return.
201 if ((outlen > 0) && (len > 0)) {
202 unsigned used = outlen;
205 memcpy(outptr, p, used);
213 if (pendsize < pendlen + len) {
214 pendsize = pendlen + len + 4096;
215 pending = sresize(pending, pendsize, unsigned char);
217 fatalbox("Out of memory");
219 memcpy(pending + pendlen, p, len);
225 static int ssh_scp_recv(unsigned char *buf, int len)
231 * See if the pending-input block contains some of what we
235 unsigned pendused = pendlen;
236 if (pendused > outlen)
238 memcpy(outptr, pending, pendused);
239 memmove(pending, pending + pendused, pendlen - pendused);
253 if (ssh_sftp_loop_iteration() < 0)
261 * Loop through the ssh connection and authentication process.
263 static void ssh_scp_init(void)
265 while (!back->sendok(backhandle)) {
266 if (ssh_sftp_loop_iteration() < 0)
270 /* Work out which backend we ended up using. */
271 if (!ssh_fallback_cmd(backhandle))
272 using_sftp = main_cmd_is_sftp;
274 using_sftp = fallback_cmd_is_sftp;
278 tell_user(stderr, "Using SFTP");
280 tell_user(stderr, "Using SCP1");
285 * Print an error message and exit after closing the SSH link.
287 static void bump(char *fmt, ...)
292 str = dupvprintf(fmt, ap);
294 str2 = dupcat(str, "\n", NULL);
296 tell_str(stderr, str2);
300 if (back != NULL && back->socket(backhandle) != NULL) {
302 back->special(backhandle, TS_EOF);
303 ssh_scp_recv((unsigned char *) &ch, 1);
307 gui_send_errcount(list, errs);
313 * Open an SSH connection to user@host and execute cmd.
315 static void do_cmd(char *host, char *user, char *cmd)
321 if (host == NULL || host[0] == '\0')
322 bump("Empty host name");
324 /* Try to load settings for this host */
325 do_defaults(host, &cfg);
326 if (cfg.host[0] == '\0') {
327 /* No settings for this host; use defaults */
328 do_defaults(NULL, &cfg);
329 strncpy(cfg.host, host, sizeof(cfg.host) - 1);
330 cfg.host[sizeof(cfg.host) - 1] = '\0';
334 * Force use of SSH. (If they got the protocol wrong we assume the
335 * port is useless too.)
337 if (cfg.protocol != PROT_SSH) {
338 cfg.protocol = PROT_SSH;
343 * Enact command-line overrides.
345 cmdline_run_saved(&cfg);
348 * Trim leading whitespace off the hostname if it's there.
351 int space = strspn(cfg.host, " \t");
352 memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space);
355 /* See if host is of the form user@host */
356 if (cfg.host[0] != '\0') {
357 char *atsign = strchr(cfg.host, '@');
358 /* Make sure we're not overflowing the user field */
360 if (atsign - cfg.host < sizeof cfg.username) {
361 strncpy(cfg.username, cfg.host, atsign - cfg.host);
362 cfg.username[atsign - cfg.host] = '\0';
364 memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1));
369 * Trim a colon suffix off the hostname if it's there.
371 cfg.host[strcspn(cfg.host, ":")] = '\0';
374 * Remove any remaining whitespace from the hostname.
378 while (cfg.host[p2] != '\0') {
379 if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') {
380 cfg.host[p1] = cfg.host[p2];
389 if (user != NULL && user[0] != '\0') {
390 strncpy(cfg.username, user, sizeof(cfg.username) - 1);
391 cfg.username[sizeof(cfg.username) - 1] = '\0';
392 } else if (cfg.username[0] == '\0') {
393 user = get_username();
395 bump("Empty user name");
398 tell_user(stderr, "Guessing user name: %s", user);
399 strncpy(cfg.username, user, sizeof(cfg.username) - 1);
400 cfg.username[sizeof(cfg.username) - 1] = '\0';
406 * Disable scary things which shouldn't be enabled for simple
407 * things like SCP and SFTP: agent forwarding, port forwarding,
412 cfg.portfwd[0] = cfg.portfwd[1] = '\0';
415 * Set up main and possibly fallback command depending on
416 * options specified by user.
417 * Attempt to start the SFTP subsystem as a first choice,
418 * falling back to the provided scp command if that fails.
420 cfg.remote_cmd_ptr2 = NULL;
422 /* First choice is SFTP subsystem. */
423 main_cmd_is_sftp = 1;
424 strcpy(cfg.remote_cmd, "sftp");
425 cfg.ssh_subsys = TRUE;
427 /* Fallback is to use the provided scp command. */
428 fallback_cmd_is_sftp = 0;
429 cfg.remote_cmd_ptr2 = cmd;
430 cfg.ssh_subsys2 = FALSE;
432 /* Since we're not going to try SCP, we may as well try
433 * harder to find an SFTP server, since in the current
434 * implementation we have a spare slot. */
435 fallback_cmd_is_sftp = 1;
436 /* see psftp.c for full explanation of this kludge */
437 cfg.remote_cmd_ptr2 =
438 "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n"
439 "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n"
441 cfg.ssh_subsys2 = FALSE;
444 /* Don't try SFTP at all; just try the scp command. */
445 main_cmd_is_sftp = 0;
446 cfg.remote_cmd_ptr = cmd;
447 cfg.ssh_subsys = FALSE;
453 err = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port, &realhost,0);
455 bump("ssh_init: %s", err);
456 logctx = log_init(NULL, &cfg);
457 back->provide_logctx(backhandle, logctx);
458 console_provide_logctx(logctx);
460 if (verbose && realhost != NULL)
461 tell_user(stderr, "Connected to %s\n", realhost);
466 * Update statistic information about current file.
468 static void print_stats(char *name, unsigned long size, unsigned long done,
469 time_t start, time_t now)
478 elap = (unsigned long) difftime(now, start);
481 ratebs = (float) done / elap;
483 ratebs = (float) done;
488 eta = (unsigned long) ((size - done) / ratebs);
489 sprintf(etastr, "%02ld:%02ld:%02ld",
490 eta / 3600, (eta % 3600) / 60, eta % 60);
492 pct = (int) (100 * (done * 1.0 / size));
495 gui_update_stats(name, size, pct, elap, done, eta,
496 (unsigned long) ratebs);
498 len = printf("\r%-25.25s | %10ld kB | %5.1f kB/s | ETA: %8s | %3d%%",
499 name, done / 1024, ratebs / 1024.0, etastr, pct);
500 if (len < prev_stats_len)
501 printf("%*s", prev_stats_len - len, "");
502 prev_stats_len = len;
512 * Find a colon in str and return a pointer to the colon.
513 * This is used to separate hostname from filename.
515 static char *colon(char *str)
517 /* We ignore a leading colon, since the hostname cannot be
518 empty. We also ignore a colon as second character because
519 of filenames like f:myfile.txt. */
520 if (str[0] == '\0' || str[0] == ':' || str[1] == ':')
522 while (*str != '\0' && *str != ':' && *str != '/' && *str != '\\')
531 * Return a pointer to the portion of str that comes after the last
532 * slash (or backslash or colon, if `local' is TRUE).
534 static char *stripslashes(char *str, int local)
539 p = strchr(str, ':');
543 p = strrchr(str, '/');
547 p = strrchr(str, '\\');
555 * Determine whether a string is entirely composed of dots.
557 static int is_dots(char *str)
559 return str[strspn(str, ".")] == '\0';
563 * Wait for a response from the other side.
564 * Return 0 if ok, -1 if error.
566 static int response(void)
568 char ch, resp, rbuf[2048];
571 if (ssh_scp_recv((unsigned char *) &resp, 1) <= 0)
572 bump("Lost connection");
582 case 2: /* fatal error */
584 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
585 bump("Protocol error: Lost connection");
587 } while (p < sizeof(rbuf) && ch != '\n');
590 tell_user(stderr, "%s\n", rbuf);
598 int sftp_recvdata(char *buf, int len)
600 return ssh_scp_recv((unsigned char *) buf, len);
602 int sftp_senddata(char *buf, int len)
604 back->send(backhandle, buf, len);
608 /* ----------------------------------------------------------------------
609 * sftp-based replacement for the hacky `pscp -ls'.
611 static int sftp_ls_compare(const void *av, const void *bv)
613 const struct fxp_name *a = (const struct fxp_name *) av;
614 const struct fxp_name *b = (const struct fxp_name *) bv;
615 return strcmp(a->filename, b->filename);
617 void scp_sftp_listdir(char *dirname)
619 struct fxp_handle *dirh;
620 struct fxp_names *names;
621 struct fxp_name *ournames;
622 struct sftp_packet *pktin;
623 struct sftp_request *req, *rreq;
624 int nnames, namesize;
628 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
633 printf("Listing directory %s\n", dirname);
635 sftp_register(req = fxp_opendir_send(dirname));
636 rreq = sftp_find_request(pktin = sftp_recv());
638 dirh = fxp_opendir_recv(pktin, rreq);
641 printf("Unable to open %s: %s\n", dirname, fxp_error());
643 nnames = namesize = 0;
648 sftp_register(req = fxp_readdir_send(dirh));
649 rreq = sftp_find_request(pktin = sftp_recv());
651 names = fxp_readdir_recv(pktin, rreq);
654 if (fxp_error_type() == SSH_FX_EOF)
656 printf("Reading directory %s: %s\n", dirname, fxp_error());
659 if (names->nnames == 0) {
660 fxp_free_names(names);
664 if (nnames + names->nnames >= namesize) {
665 namesize += names->nnames + 128;
666 ournames = sresize(ournames, namesize, struct fxp_name);
669 for (i = 0; i < names->nnames; i++)
670 ournames[nnames++] = names->names[i];
672 names->nnames = 0; /* prevent free_names */
673 fxp_free_names(names);
675 sftp_register(req = fxp_close_send(dirh));
676 rreq = sftp_find_request(pktin = sftp_recv());
678 fxp_close_recv(pktin, rreq);
681 * Now we have our filenames. Sort them by actual file
682 * name, and then output the longname parts.
684 qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare);
689 for (i = 0; i < nnames; i++)
690 printf("%s\n", ournames[i].longname);
694 /* ----------------------------------------------------------------------
695 * Helper routines that contain the actual SCP protocol elements,
696 * implemented both as SCP1 and SFTP.
699 static struct scp_sftp_dirstack {
700 struct scp_sftp_dirstack *next;
701 struct fxp_name *names;
702 int namepos, namelen;
705 int matched_something; /* wildcard match set was non-empty */
706 } *scp_sftp_dirstack_head;
707 static char *scp_sftp_remotepath, *scp_sftp_currentname;
708 static char *scp_sftp_wildcard;
709 static int scp_sftp_targetisdir, scp_sftp_donethistarget;
710 static int scp_sftp_preserve, scp_sftp_recursive;
711 static unsigned long scp_sftp_mtime, scp_sftp_atime;
712 static int scp_has_times;
713 static struct fxp_handle *scp_sftp_filehandle;
714 static struct fxp_xfer *scp_sftp_xfer;
715 static uint64 scp_sftp_fileoffset;
717 void scp_source_setup(char *target, int shouldbedir)
721 * Find out whether the target filespec is in fact a
724 struct sftp_packet *pktin;
725 struct sftp_request *req, *rreq;
726 struct fxp_attrs attrs;
730 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
735 sftp_register(req = fxp_stat_send(target));
736 rreq = sftp_find_request(pktin = sftp_recv());
738 ret = fxp_stat_recv(pktin, rreq, &attrs);
740 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS))
741 scp_sftp_targetisdir = 0;
743 scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0;
745 if (shouldbedir && !scp_sftp_targetisdir) {
746 bump("pscp: remote filespec %s: not a directory\n", target);
749 scp_sftp_remotepath = dupstr(target);
757 int scp_send_errmsg(char *str)
760 /* do nothing; we never need to send our errors to the server */
762 back->send(backhandle, "\001", 1);/* scp protocol error prefix */
763 back->send(backhandle, str, strlen(str));
765 return 0; /* can't fail */
768 int scp_send_filetimes(unsigned long mtime, unsigned long atime)
771 scp_sftp_mtime = mtime;
772 scp_sftp_atime = atime;
777 sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime);
778 back->send(backhandle, buf, strlen(buf));
783 int scp_send_filename(char *name, unsigned long size, int modes)
787 struct sftp_packet *pktin;
788 struct sftp_request *req, *rreq;
790 if (scp_sftp_targetisdir) {
791 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
793 fullname = dupstr(scp_sftp_remotepath);
796 sftp_register(req = fxp_open_send(fullname, SSH_FXF_WRITE |
797 SSH_FXF_CREAT | SSH_FXF_TRUNC));
798 rreq = sftp_find_request(pktin = sftp_recv());
800 scp_sftp_filehandle = fxp_open_recv(pktin, rreq);
802 if (!scp_sftp_filehandle) {
803 tell_user(stderr, "pscp: unable to open %s: %s",
804 fullname, fxp_error());
808 scp_sftp_fileoffset = uint64_make(0, 0);
809 scp_sftp_xfer = xfer_upload_init(scp_sftp_filehandle,
810 scp_sftp_fileoffset);
815 sprintf(buf, "C%04o %lu ", modes, size);
816 back->send(backhandle, buf, strlen(buf));
817 back->send(backhandle, name, strlen(name));
818 back->send(backhandle, "\n", 1);
823 int scp_send_filedata(char *data, int len)
827 struct sftp_packet *pktin;
829 if (!scp_sftp_filehandle) {
833 while (!xfer_upload_ready(scp_sftp_xfer)) {
835 ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin);
837 tell_user(stderr, "error while writing: %s\n", fxp_error());
843 xfer_upload_data(scp_sftp_xfer, data, len);
845 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, len);
848 int bufsize = back->send(backhandle, data, len);
851 * If the network transfer is backing up - that is, the
852 * remote site is not accepting data as fast as we can
853 * produce it - then we must loop on network events until
854 * we have space in the buffer again.
856 while (bufsize > MAX_SCP_BUFSIZE) {
857 if (ssh_sftp_loop_iteration() < 0)
859 bufsize = back->sendbuffer(backhandle);
866 int scp_send_finish(void)
869 struct fxp_attrs attrs;
870 struct sftp_packet *pktin;
871 struct sftp_request *req, *rreq;
874 while (!xfer_done(scp_sftp_xfer)) {
876 xfer_upload_gotpkt(scp_sftp_xfer, pktin);
878 xfer_cleanup(scp_sftp_xfer);
880 if (!scp_sftp_filehandle) {
884 attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME;
885 attrs.atime = scp_sftp_atime;
886 attrs.mtime = scp_sftp_mtime;
887 sftp_register(req = fxp_fsetstat_send(scp_sftp_filehandle, attrs));
888 rreq = sftp_find_request(pktin = sftp_recv());
890 ret = fxp_fsetstat_recv(pktin, rreq);
892 tell_user(stderr, "unable to set file times: %s\n", fxp_error());
896 sftp_register(req = fxp_close_send(scp_sftp_filehandle));
897 rreq = sftp_find_request(pktin = sftp_recv());
899 fxp_close_recv(pktin, rreq);
903 back->send(backhandle, "", 1);
908 char *scp_save_remotepath(void)
911 return scp_sftp_remotepath;
916 void scp_restore_remotepath(char *data)
919 scp_sftp_remotepath = data;
922 int scp_send_dirname(char *name, int modes)
927 struct fxp_attrs attrs;
928 struct sftp_packet *pktin;
929 struct sftp_request *req, *rreq;
932 if (scp_sftp_targetisdir) {
933 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
935 fullname = dupstr(scp_sftp_remotepath);
939 * We don't worry about whether we managed to create the
940 * directory, because if it exists already it's OK just to
941 * use it. Instead, we will stat it afterwards, and if it
942 * exists and is a directory we will assume we were either
943 * successful or it didn't matter.
945 sftp_register(req = fxp_mkdir_send(fullname));
946 rreq = sftp_find_request(pktin = sftp_recv());
948 ret = fxp_mkdir_recv(pktin, rreq);
953 err = "server reported no error";
955 sftp_register(req = fxp_stat_send(fullname));
956 rreq = sftp_find_request(pktin = sftp_recv());
958 ret = fxp_stat_recv(pktin, rreq, &attrs);
960 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) ||
961 !(attrs.permissions & 0040000)) {
962 tell_user(stderr, "unable to create directory %s: %s",
968 scp_sftp_remotepath = fullname;
973 sprintf(buf, "D%04o 0 ", modes);
974 back->send(backhandle, buf, strlen(buf));
975 back->send(backhandle, name, strlen(name));
976 back->send(backhandle, "\n", 1);
981 int scp_send_enddir(void)
984 sfree(scp_sftp_remotepath);
987 back->send(backhandle, "E\n", 2);
993 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
994 * That's bad. The difference is that scp_sink_setup is called once
995 * right at the start, whereas scp_sink_init is called to
996 * initialise every level of recursion in the protocol.
998 int scp_sink_setup(char *source, int preserve, int recursive)
1004 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
1009 * It's possible that the source string we've been given
1010 * contains a wildcard. If so, we must split the directory
1011 * away from the wildcard itself (throwing an error if any
1012 * wildcardness comes before the final slash) and arrange
1013 * things so that a dirstack entry will be set up.
1015 newsource = snewn(1+strlen(source), char);
1016 if (!wc_unescape(newsource, source)) {
1017 /* Yes, here we go; it's a wildcard. Bah. */
1018 char *dupsource, *lastpart, *dirpart, *wildcard;
1019 dupsource = dupstr(source);
1020 lastpart = stripslashes(dupsource, 0);
1021 wildcard = dupstr(lastpart);
1023 if (*dupsource && dupsource[1]) {
1025 * The remains of dupsource are at least two
1026 * characters long, meaning the pathname wasn't
1027 * empty or just `/'. Hence, we remove the trailing
1030 lastpart[-1] = '\0';
1031 } else if (!*dupsource) {
1033 * The remains of dupsource are _empty_ - the whole
1034 * pathname was a wildcard. Hence we need to
1035 * replace it with ".".
1038 dupsource = dupstr(".");
1042 * Now we have separated our string into dupsource (the
1043 * directory part) and wildcard. Both of these will
1044 * need freeing at some point. Next step is to remove
1045 * wildcard escapes from the directory part, throwing
1046 * an error if it contains a real wildcard.
1048 dirpart = snewn(1+strlen(dupsource), char);
1049 if (!wc_unescape(dirpart, dupsource)) {
1050 tell_user(stderr, "%s: multiple-level wildcards unsupported",
1060 * Now we have dirpart (unescaped, ie a valid remote
1061 * path), and wildcard (a wildcard). This will be
1062 * sufficient to arrange a dirstack entry.
1064 scp_sftp_remotepath = dirpart;
1065 scp_sftp_wildcard = wildcard;
1068 scp_sftp_remotepath = newsource;
1069 scp_sftp_wildcard = NULL;
1071 scp_sftp_preserve = preserve;
1072 scp_sftp_recursive = recursive;
1073 scp_sftp_donethistarget = 0;
1074 scp_sftp_dirstack_head = NULL;
1079 int scp_sink_init(void)
1082 back->send(backhandle, "", 1);
1087 #define SCP_SINK_FILE 1
1088 #define SCP_SINK_DIR 2
1089 #define SCP_SINK_ENDDIR 3
1090 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1091 struct scp_sink_action {
1092 int action; /* FILE, DIR, ENDDIR */
1093 char *buf; /* will need freeing after use */
1094 char *name; /* filename or dirname (not ENDDIR) */
1095 int mode; /* access mode (not ENDDIR) */
1096 unsigned long size; /* file size (not ENDDIR) */
1097 int settime; /* 1 if atime and mtime are filled */
1098 unsigned long atime, mtime; /* access times for the file */
1101 int scp_get_sink_action(struct scp_sink_action *act)
1105 int must_free_fname;
1106 struct fxp_attrs attrs;
1107 struct sftp_packet *pktin;
1108 struct sftp_request *req, *rreq;
1111 if (!scp_sftp_dirstack_head) {
1112 if (!scp_sftp_donethistarget) {
1114 * Simple case: we are only dealing with one file.
1116 fname = scp_sftp_remotepath;
1117 must_free_fname = 0;
1118 scp_sftp_donethistarget = 1;
1121 * Even simpler case: one file _which we've done_.
1122 * Return 1 (finished).
1128 * We're now in the middle of stepping through a list
1129 * of names returned from fxp_readdir(); so let's carry
1132 struct scp_sftp_dirstack *head = scp_sftp_dirstack_head;
1133 while (head->namepos < head->namelen &&
1134 (is_dots(head->names[head->namepos].filename) ||
1136 !wc_match(head->wildcard,
1137 head->names[head->namepos].filename))))
1138 head->namepos++; /* skip . and .. */
1139 if (head->namepos < head->namelen) {
1140 head->matched_something = 1;
1141 fname = dupcat(head->dirpath, "/",
1142 head->names[head->namepos++].filename,
1144 must_free_fname = 1;
1147 * We've come to the end of the list; pop it off
1148 * the stack and return an ENDDIR action (or RETRY
1149 * if this was a wildcard match).
1151 if (head->wildcard) {
1152 act->action = SCP_SINK_RETRY;
1153 if (!head->matched_something) {
1154 tell_user(stderr, "pscp: wildcard '%s' matched "
1155 "no files", head->wildcard);
1158 sfree(head->wildcard);
1161 act->action = SCP_SINK_ENDDIR;
1164 sfree(head->dirpath);
1166 scp_sftp_dirstack_head = head->next;
1174 * Now we have a filename. Stat it, and see if it's a file
1177 sftp_register(req = fxp_stat_send(fname));
1178 rreq = sftp_find_request(pktin = sftp_recv());
1179 assert(rreq == req);
1180 ret = fxp_stat_recv(pktin, rreq, &attrs);
1182 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) {
1183 tell_user(stderr, "unable to identify %s: %s", fname,
1184 ret ? "file type not supplied" : fxp_error());
1189 if (attrs.permissions & 0040000) {
1190 struct scp_sftp_dirstack *newitem;
1191 struct fxp_handle *dirhandle;
1192 int nnames, namesize;
1193 struct fxp_name *ournames;
1194 struct fxp_names *names;
1197 * It's a directory. If we're not in recursive mode,
1198 * this merits a complaint (which is fatal if the name
1199 * was specified directly, but not if it was matched by
1202 * We skip this complaint completely if
1203 * scp_sftp_wildcard is set, because that's an
1204 * indication that we're not actually supposed to
1205 * _recursively_ transfer the dir, just scan it for
1206 * things matching the wildcard.
1208 if (!scp_sftp_recursive && !scp_sftp_wildcard) {
1209 tell_user(stderr, "pscp: %s: is a directory", fname);
1211 if (must_free_fname) sfree(fname);
1212 if (scp_sftp_dirstack_head) {
1213 act->action = SCP_SINK_RETRY;
1221 * Otherwise, the fun begins. We must fxp_opendir() the
1222 * directory, slurp the filenames into memory, return
1223 * SCP_SINK_DIR (unless this is a wildcard match), and
1224 * set targetisdir. The next time we're called, we will
1225 * run through the list of filenames one by one,
1226 * matching them against a wildcard if present.
1228 * If targetisdir is _already_ set (meaning we're
1229 * already in the middle of going through another such
1230 * list), we must push the other (target,namelist) pair
1233 sftp_register(req = fxp_opendir_send(fname));
1234 rreq = sftp_find_request(pktin = sftp_recv());
1235 assert(rreq == req);
1236 dirhandle = fxp_opendir_recv(pktin, rreq);
1239 tell_user(stderr, "scp: unable to open directory %s: %s",
1240 fname, fxp_error());
1241 if (must_free_fname) sfree(fname);
1245 nnames = namesize = 0;
1250 sftp_register(req = fxp_readdir_send(dirhandle));
1251 rreq = sftp_find_request(pktin = sftp_recv());
1252 assert(rreq == req);
1253 names = fxp_readdir_recv(pktin, rreq);
1255 if (names == NULL) {
1256 if (fxp_error_type() == SSH_FX_EOF)
1258 tell_user(stderr, "scp: reading directory %s: %s\n",
1259 fname, fxp_error());
1260 if (must_free_fname) sfree(fname);
1265 if (names->nnames == 0) {
1266 fxp_free_names(names);
1269 if (nnames + names->nnames >= namesize) {
1270 namesize += names->nnames + 128;
1271 ournames = sresize(ournames, namesize, struct fxp_name);
1273 for (i = 0; i < names->nnames; i++)
1274 ournames[nnames++] = names->names[i];
1275 names->nnames = 0; /* prevent free_names */
1276 fxp_free_names(names);
1278 sftp_register(req = fxp_close_send(dirhandle));
1279 rreq = sftp_find_request(pktin = sftp_recv());
1280 assert(rreq == req);
1281 fxp_close_recv(pktin, rreq);
1283 newitem = snew(struct scp_sftp_dirstack);
1284 newitem->next = scp_sftp_dirstack_head;
1285 newitem->names = ournames;
1286 newitem->namepos = 0;
1287 newitem->namelen = nnames;
1288 if (must_free_fname)
1289 newitem->dirpath = fname;
1291 newitem->dirpath = dupstr(fname);
1292 if (scp_sftp_wildcard) {
1293 newitem->wildcard = scp_sftp_wildcard;
1294 newitem->matched_something = 0;
1295 scp_sftp_wildcard = NULL;
1297 newitem->wildcard = NULL;
1299 scp_sftp_dirstack_head = newitem;
1301 if (newitem->wildcard) {
1302 act->action = SCP_SINK_RETRY;
1304 act->action = SCP_SINK_DIR;
1305 act->buf = dupstr(stripslashes(fname, 0));
1306 act->name = act->buf;
1307 act->size = 0; /* duhh, it's a directory */
1308 act->mode = 07777 & attrs.permissions;
1309 if (scp_sftp_preserve &&
1310 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1311 act->atime = attrs.atime;
1312 act->mtime = attrs.mtime;
1321 * It's a file. Return SCP_SINK_FILE.
1323 act->action = SCP_SINK_FILE;
1324 act->buf = dupstr(stripslashes(fname, 0));
1325 act->name = act->buf;
1326 if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) {
1327 if (uint64_compare(attrs.size,
1328 uint64_make(0, ULONG_MAX)) > 0) {
1329 act->size = ULONG_MAX; /* *boggle* */
1331 act->size = attrs.size.lo;
1333 act->size = ULONG_MAX; /* no idea */
1334 act->mode = 07777 & attrs.permissions;
1335 if (scp_sftp_preserve &&
1336 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1337 act->atime = attrs.atime;
1338 act->mtime = attrs.mtime;
1342 if (must_free_fname)
1343 scp_sftp_currentname = fname;
1345 scp_sftp_currentname = dupstr(fname);
1360 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1363 bump("Protocol error: Unexpected newline");
1367 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1368 bump("Lost connection");
1371 act->buf = sresize(act->buf, bufsize, char);
1374 } while (ch != '\n');
1375 act->buf[i - 1] = '\0';
1377 case '\01': /* error */
1378 tell_user(stderr, "%s\n", act->buf);
1380 continue; /* go round again */
1381 case '\02': /* fatal error */
1382 bump("%s", act->buf);
1384 back->send(backhandle, "", 1);
1385 act->action = SCP_SINK_ENDDIR;
1388 if (sscanf(act->buf, "%ld %*d %ld %*d",
1389 &act->mtime, &act->atime) == 2) {
1391 back->send(backhandle, "", 1);
1392 continue; /* go round again */
1394 bump("Protocol error: Illegal time format");
1397 act->action = (action == 'C' ? SCP_SINK_FILE : SCP_SINK_DIR);
1400 bump("Protocol error: Expected control record");
1403 * We will go round this loop only once, unless we hit
1410 * If we get here, we must have seen SCP_SINK_FILE or
1413 if (sscanf(act->buf, "%o %lu %n", &act->mode, &act->size, &i) != 2)
1414 bump("Protocol error: Illegal file descriptor format");
1415 act->name = act->buf + i;
1420 int scp_accept_filexfer(void)
1423 struct sftp_packet *pktin;
1424 struct sftp_request *req, *rreq;
1426 sftp_register(req = fxp_open_send(scp_sftp_currentname, SSH_FXF_READ));
1427 rreq = sftp_find_request(pktin = sftp_recv());
1428 assert(rreq == req);
1429 scp_sftp_filehandle = fxp_open_recv(pktin, rreq);
1431 if (!scp_sftp_filehandle) {
1432 tell_user(stderr, "pscp: unable to open %s: %s",
1433 scp_sftp_currentname, fxp_error());
1437 scp_sftp_fileoffset = uint64_make(0, 0);
1438 scp_sftp_xfer = xfer_download_init(scp_sftp_filehandle,
1439 scp_sftp_fileoffset);
1440 sfree(scp_sftp_currentname);
1443 back->send(backhandle, "", 1);
1444 return 0; /* can't fail */
1448 int scp_recv_filedata(char *data, int len)
1451 struct sftp_packet *pktin;
1455 xfer_download_queue(scp_sftp_xfer);
1456 pktin = sftp_recv();
1457 ret = xfer_download_gotpkt(scp_sftp_xfer, pktin);
1460 tell_user(stderr, "pscp: error while reading: %s", fxp_error());
1465 if (xfer_download_data(scp_sftp_xfer, &vbuf, &actuallen)) {
1467 * This assertion relies on the fact that the natural
1468 * block size used in the xfer manager is at most that
1469 * used in this module. I don't like crossing layers in
1470 * this way, but it'll do for now.
1472 assert(actuallen <= len);
1473 memcpy(data, vbuf, actuallen);
1478 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, actuallen);
1482 return ssh_scp_recv((unsigned char *) data, len);
1486 int scp_finish_filerecv(void)
1489 struct sftp_packet *pktin;
1490 struct sftp_request *req, *rreq;
1493 * Ensure that xfer_done() will work correctly, so we can
1494 * clean up any outstanding requests from the file
1497 xfer_set_error(scp_sftp_xfer);
1498 while (!xfer_done(scp_sftp_xfer)) {
1502 pktin = sftp_recv();
1503 xfer_download_gotpkt(scp_sftp_xfer, pktin);
1504 if (xfer_download_data(scp_sftp_xfer, &vbuf, &len))
1507 xfer_cleanup(scp_sftp_xfer);
1509 sftp_register(req = fxp_close_send(scp_sftp_filehandle));
1510 rreq = sftp_find_request(pktin = sftp_recv());
1511 assert(rreq == req);
1512 fxp_close_recv(pktin, rreq);
1515 back->send(backhandle, "", 1);
1520 /* ----------------------------------------------------------------------
1521 * Send an error message to the other side and to the screen.
1522 * Increment error counter.
1524 static void run_err(const char *fmt, ...)
1530 str = dupvprintf(fmt, ap);
1531 str2 = dupcat("scp: ", str, "\n", NULL);
1533 scp_send_errmsg(str2);
1534 tell_user(stderr, "%s", str2);
1540 * Execute the source part of the SCP protocol.
1542 static void source(char *src)
1545 unsigned long mtime, atime;
1550 unsigned long stat_bytes;
1551 time_t stat_starttime, stat_lasttime;
1553 attr = file_type(src);
1554 if (attr == FILE_TYPE_NONEXISTENT ||
1555 attr == FILE_TYPE_WEIRD) {
1556 run_err("%s: %s file or directory", src,
1557 (attr == FILE_TYPE_WEIRD ? "Not a" : "No such"));
1561 if (attr == FILE_TYPE_DIRECTORY) {
1564 * Avoid . and .. directories.
1567 p = strrchr(src, '/');
1569 p = strrchr(src, '\\');
1574 if (!strcmp(p, ".") || !strcmp(p, ".."))
1575 /* skip . and .. */ ;
1579 run_err("%s: not a regular file", src);
1584 if ((last = strrchr(src, '/')) == NULL)
1588 if (strrchr(last, '\\') != NULL)
1589 last = strrchr(last, '\\') + 1;
1590 if (last == src && strchr(src, ':') != NULL)
1591 last = strchr(src, ':') + 1;
1593 f = open_existing_file(src, &size, &mtime, &atime);
1595 run_err("%s: Cannot open file", src);
1599 if (scp_send_filetimes(mtime, atime))
1604 tell_user(stderr, "Sending file %s, size=%lu", last, size);
1605 if (scp_send_filename(last, size, 0644))
1609 stat_starttime = time(NULL);
1612 for (i = 0; i < size; i += 4096) {
1613 char transbuf[4096];
1618 if ((j = read_from_file(f, transbuf, k)) != k) {
1621 bump("%s: Read error", src);
1623 if (scp_send_filedata(transbuf, k))
1624 bump("%s: Network error occurred", src);
1628 if (time(NULL) != stat_lasttime || i + k == size) {
1629 stat_lasttime = time(NULL);
1630 print_stats(last, size, stat_bytes,
1631 stat_starttime, stat_lasttime);
1638 (void) scp_send_finish();
1642 * Recursively send the contents of a directory.
1644 static void rsource(char *src)
1650 if ((last = strrchr(src, '/')) == NULL)
1654 if (strrchr(last, '\\') != NULL)
1655 last = strrchr(last, '\\') + 1;
1656 if (last == src && strchr(src, ':') != NULL)
1657 last = strchr(src, ':') + 1;
1659 /* maybe send filetime */
1661 save_target = scp_save_remotepath();
1664 tell_user(stderr, "Entering directory: %s", last);
1665 if (scp_send_dirname(last, 0755))
1668 dir = open_directory(src);
1671 while ((filename = read_filename(dir)) != NULL) {
1672 char *foundfile = dupcat(src, "/", filename, NULL);
1678 close_directory(dir);
1680 (void) scp_send_enddir();
1682 scp_restore_remotepath(save_target);
1686 * Execute the sink part of the SCP protocol.
1688 static void sink(char *targ, char *src)
1695 unsigned long received;
1697 unsigned long stat_bytes;
1698 time_t stat_starttime, stat_lasttime;
1701 attr = file_type(targ);
1702 if (attr == FILE_TYPE_DIRECTORY)
1705 if (targetshouldbedirectory && !targisdir)
1706 bump("%s: Not a directory", targ);
1710 struct scp_sink_action act;
1711 if (scp_get_sink_action(&act))
1714 if (act.action == SCP_SINK_ENDDIR)
1717 if (act.action == SCP_SINK_RETRY)
1722 * Prevent the remote side from maliciously writing to
1723 * files outside the target area by sending a filename
1724 * containing `../'. In fact, it shouldn't be sending
1725 * filenames with any slashes or colons in at all; so
1726 * we'll find the last slash, backslash or colon in the
1727 * filename and use only the part after that. (And
1730 * In addition, we also ensure here that if we're
1731 * copying a single file and the target is a directory
1732 * (common usage: `pscp host:filename .') the remote
1733 * can't send us a _different_ file name. We can
1734 * distinguish this case because `src' will be non-NULL
1735 * and the last component of that will fail to match
1736 * (the last component of) the name sent.
1738 * Well, not always; if `src' is a wildcard, we do
1739 * expect to get back filenames that don't correspond
1740 * exactly to it. Ideally in this case, we would like
1741 * to ensure that the returned filename actually
1742 * matches the wildcard pattern - but one of SCP's
1743 * protocol infelicities is that wildcard matching is
1744 * done at the server end _by the server's rules_ and
1745 * so in general this is infeasible. Hence, we only
1746 * accept filenames that don't correspond to `src' if
1747 * unsafe mode is enabled or we are using SFTP (which
1748 * resolves remote wildcards on the client side and can
1751 char *striptarget, *stripsrc;
1753 striptarget = stripslashes(act.name, 1);
1754 if (striptarget != act.name) {
1755 tell_user(stderr, "warning: remote host sent a compound"
1756 " pathname '%s'", act.name);
1757 tell_user(stderr, " renaming local file to '%s'",
1762 * Also check to see if the target filename is '.' or
1763 * '..', or indeed '...' and so on because Windows
1764 * appears to interpret those like '..'.
1766 if (is_dots(striptarget)) {
1767 bump("security violation: remote host attempted to write to"
1768 " a '.' or '..' path!");
1772 stripsrc = stripslashes(src, 1);
1773 if (strcmp(striptarget, stripsrc) &&
1774 !using_sftp && !scp_unsafe_mode) {
1775 tell_user(stderr, "warning: remote host tried to write "
1776 "to a file called '%s'", striptarget);
1777 tell_user(stderr, " when we requested a file "
1778 "called '%s'.", stripsrc);
1779 tell_user(stderr, " If this is a wildcard, "
1780 "consider upgrading to SSH 2 or using");
1781 tell_user(stderr, " the '-unsafe' option. Renaming"
1782 " of this file has been disallowed.");
1783 /* Override the name the server provided with our own. */
1784 striptarget = stripsrc;
1788 if (targ[0] != '\0')
1789 destfname = dir_file_cat(targ, striptarget);
1791 destfname = dupstr(striptarget);
1794 * In this branch of the if, the target area is a
1795 * single file with an explicitly specified name in any
1796 * case, so there's no danger.
1798 destfname = dupstr(targ);
1800 attr = file_type(destfname);
1801 exists = (attr != FILE_TYPE_NONEXISTENT);
1803 if (act.action == SCP_SINK_DIR) {
1804 if (exists && attr != FILE_TYPE_DIRECTORY) {
1805 run_err("%s: Not a directory", destfname);
1809 if (!create_directory(destfname)) {
1810 run_err("%s: Cannot create directory", destfname);
1814 sink(destfname, NULL);
1815 /* can we set the timestamp for directories ? */
1819 f = open_new_file(destfname);
1821 run_err("%s: Cannot create file", destfname);
1825 if (scp_accept_filexfer())
1829 stat_starttime = time(NULL);
1831 stat_name = stripslashes(destfname, 1);
1834 while (received < act.size) {
1835 char transbuf[4096];
1838 if (blksize > (int)(act.size - received))
1839 blksize = act.size - received;
1840 read = scp_recv_filedata(transbuf, blksize);
1842 bump("Lost connection");
1845 if (write_to_file(f, transbuf, read) != (int)read) {
1847 /* FIXME: in sftp we can actually abort the transfer */
1849 printf("\r%-25.25s | %50s\n",
1851 "Write error.. waiting for end of file");
1856 if (time(NULL) > stat_lasttime ||
1857 received + read == act.size) {
1858 stat_lasttime = time(NULL);
1859 print_stats(stat_name, act.size, stat_bytes,
1860 stat_starttime, stat_lasttime);
1866 set_file_times(f, act.mtime, act.atime);
1871 run_err("%s: Write error", destfname);
1874 (void) scp_finish_filerecv();
1881 * We will copy local files to a remote server.
1883 static void toremote(int argc, char *argv[])
1885 char *src, *targ, *host, *user;
1889 targ = argv[argc - 1];
1891 /* Separate host from filename */
1895 bump("targ == NULL in toremote()");
1899 /* Substitute "." for emtpy target */
1901 /* Separate host and username */
1903 host = strrchr(host, '@');
1914 if (colon(argv[0]) != NULL)
1915 bump("%s: Remote to remote not supported", argv[0]);
1917 wc_type = test_wildcard(argv[0], 1);
1918 if (wc_type == WCTYPE_NONEXISTENT)
1919 bump("%s: No such file or directory\n", argv[0]);
1920 else if (wc_type == WCTYPE_WILDCARD)
1921 targetshouldbedirectory = 1;
1924 cmd = dupprintf("scp%s%s%s%s -t %s",
1925 verbose ? " -v" : "",
1926 recursive ? " -r" : "",
1927 preserve ? " -p" : "",
1928 targetshouldbedirectory ? " -d" : "", targ);
1929 do_cmd(host, user, cmd);
1932 scp_source_setup(targ, targetshouldbedirectory);
1934 for (i = 0; i < argc - 1; i++) {
1936 if (colon(src) != NULL) {
1937 tell_user(stderr, "%s: Remote to remote not supported\n", src);
1942 wc_type = test_wildcard(src, 1);
1943 if (wc_type == WCTYPE_NONEXISTENT) {
1944 run_err("%s: No such file or directory", src);
1946 } else if (wc_type == WCTYPE_FILENAME) {
1950 WildcardMatcher *wc;
1953 wc = begin_wildcard_matching(src);
1955 run_err("%s: No such file or directory", src);
1959 while ((filename = wildcard_get_filename(wc)) != NULL) {
1964 finish_wildcard_matching(wc);
1970 * We will copy files from a remote server to the local machine.
1972 static void tolocal(int argc, char *argv[])
1974 char *src, *targ, *host, *user;
1978 bump("More than one remote source not supported");
1983 /* Separate host from filename */
1987 bump("Local to local copy not supported");
1991 /* Substitute "." for empty filename */
1993 /* Separate username and hostname */
1995 host = strrchr(host, '@');
2005 cmd = dupprintf("scp%s%s%s%s -f %s",
2006 verbose ? " -v" : "",
2007 recursive ? " -r" : "",
2008 preserve ? " -p" : "",
2009 targetshouldbedirectory ? " -d" : "", src);
2010 do_cmd(host, user, cmd);
2013 if (scp_sink_setup(src, preserve, recursive))
2020 * We will issue a list command to get a remote directory.
2022 static void get_dir_list(int argc, char *argv[])
2024 char *src, *host, *user;
2030 /* Separate host from filename */
2034 bump("Local to local copy not supported");
2038 /* Substitute "." for empty filename */
2040 /* Separate username and hostname */
2042 host = strrchr(host, '@');
2052 cmd = snewn(4 * strlen(src) + 100, char);
2053 strcpy(cmd, "ls -la '");
2054 p = cmd + strlen(cmd);
2055 for (q = src; *q; q++) {
2068 do_cmd(host, user, cmd);
2072 scp_sftp_listdir(src);
2074 while (ssh_scp_recv((unsigned char *) &c, 1) > 0)
2075 tell_char(stdout, c);
2080 * Short description of parameters.
2082 static void usage(void)
2084 printf("PuTTY Secure Copy client\n");
2085 printf("%s\n", ver);
2086 printf("Usage: pscp [options] [user@]host:source target\n");
2088 (" pscp [options] source [source...] [user@]host:target\n");
2089 printf(" pscp [options] -ls [user@]host:filespec\n");
2090 printf("Options:\n");
2091 printf(" -p preserve file attributes\n");
2092 printf(" -q quiet, don't show statistics\n");
2093 printf(" -r copy directories recursively\n");
2094 printf(" -v show verbose messages\n");
2095 printf(" -load sessname Load settings from saved session\n");
2096 printf(" -P port connect to specified port\n");
2097 printf(" -l user connect with specified username\n");
2098 printf(" -pw passw login with specified password\n");
2099 printf(" -1 -2 force use of particular SSH protocol version\n");
2100 printf(" -C enable compression\n");
2101 printf(" -i key private key file for authentication\n");
2102 printf(" -batch disable all interactive prompts\n");
2103 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2104 printf(" -V print version information\n");
2105 printf(" -sftp force use of SFTP protocol\n");
2106 printf(" -scp force use of SCP protocol\n");
2109 * -gui is an internal option, used by GUI front ends to get
2110 * pscp to pass progress reports back to them. It's not an
2111 * ordinary user-accessible option, so it shouldn't be part of
2112 * the command-line help. The only people who need to know
2113 * about it are programmers, and they can read the source.
2116 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2123 printf("pscp: %s\n", ver);
2127 void cmdline_error(char *p, ...)
2130 fprintf(stderr, "pscp: ");
2132 vfprintf(stderr, p, ap);
2134 fprintf(stderr, "\n try typing just \"pscp\" for help\n");
2139 * Main program. (Called `psftp_main' because it gets called from
2140 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2142 int psftp_main(int argc, char *argv[])
2146 default_protocol = PROT_TELNET;
2149 #ifdef FLAG_SYNCAGENT
2153 cmdline_tooltype = TOOLTYPE_FILETRANSFER;
2154 ssh_get_line = &console_get_line;
2157 for (i = 1; i < argc; i++) {
2159 if (argv[i][0] != '-')
2161 ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, &cfg);
2163 cmdline_error("option \"%s\" requires an argument", argv[i]);
2164 } else if (ret == 2) {
2165 i++; /* skip next argument */
2166 } else if (ret == 1) {
2167 /* We have our own verbosity in addition to `flags'. */
2168 if (flags & FLAG_VERBOSE)
2170 } else if (strcmp(argv[i], "-r") == 0) {
2172 } else if (strcmp(argv[i], "-p") == 0) {
2174 } else if (strcmp(argv[i], "-q") == 0) {
2176 } else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-?") == 0) {
2178 } else if (strcmp(argv[i], "-V") == 0) {
2180 } else if (strcmp(argv[i], "-gui") == 0 && i + 1 < argc) {
2181 gui_enable(argv[++i]);
2183 console_batch_mode = TRUE;
2184 } else if (strcmp(argv[i], "-ls") == 0) {
2186 } else if (strcmp(argv[i], "-batch") == 0) {
2187 console_batch_mode = 1;
2188 } else if (strcmp(argv[i], "-unsafe") == 0) {
2189 scp_unsafe_mode = 1;
2190 } else if (strcmp(argv[i], "-sftp") == 0) {
2191 try_scp = 0; try_sftp = 1;
2192 } else if (strcmp(argv[i], "-scp") == 0) {
2193 try_scp = 1; try_sftp = 0;
2194 } else if (strcmp(argv[i], "--") == 0) {
2198 cmdline_error("unknown option \"%s\"", argv[i]);
2208 get_dir_list(argc, argv);
2215 targetshouldbedirectory = 1;
2217 if (colon(argv[argc - 1]) != NULL)
2218 toremote(argc, argv);
2220 tolocal(argc, argv);
2223 if (back != NULL && back->socket(backhandle) != NULL) {
2225 back->special(backhandle, TS_EOF);
2226 ssh_scp_recv((unsigned char *) &ch, 1);
2231 gui_send_errcount(list, errs);
2234 console_provide_logctx(NULL);
2235 back->free(backhandle);
2239 return (errs == 0 ? 0 : 1);