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 etastr = dupprintf("%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;
514 * Find a colon in str and return a pointer to the colon.
515 * This is used to separate hostname from filename.
517 static char *colon(char *str)
519 /* We ignore a leading colon, since the hostname cannot be
520 empty. We also ignore a colon as second character because
521 of filenames like f:myfile.txt. */
522 if (str[0] == '\0' || str[0] == ':' || str[1] == ':')
524 while (*str != '\0' && *str != ':' && *str != '/' && *str != '\\')
533 * Return a pointer to the portion of str that comes after the last
534 * slash (or backslash or colon, if `local' is TRUE).
536 static char *stripslashes(char *str, int local)
541 p = strchr(str, ':');
545 p = strrchr(str, '/');
549 p = strrchr(str, '\\');
557 * Determine whether a string is entirely composed of dots.
559 static int is_dots(char *str)
561 return str[strspn(str, ".")] == '\0';
565 * Wait for a response from the other side.
566 * Return 0 if ok, -1 if error.
568 static int response(void)
570 char ch, resp, rbuf[2048];
573 if (ssh_scp_recv((unsigned char *) &resp, 1) <= 0)
574 bump("Lost connection");
584 case 2: /* fatal error */
586 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
587 bump("Protocol error: Lost connection");
589 } while (p < sizeof(rbuf) && ch != '\n');
592 tell_user(stderr, "%s\n", rbuf);
600 int sftp_recvdata(char *buf, int len)
602 return ssh_scp_recv((unsigned char *) buf, len);
604 int sftp_senddata(char *buf, int len)
606 back->send(backhandle, buf, len);
610 /* ----------------------------------------------------------------------
611 * sftp-based replacement for the hacky `pscp -ls'.
613 static int sftp_ls_compare(const void *av, const void *bv)
615 const struct fxp_name *a = (const struct fxp_name *) av;
616 const struct fxp_name *b = (const struct fxp_name *) bv;
617 return strcmp(a->filename, b->filename);
619 void scp_sftp_listdir(char *dirname)
621 struct fxp_handle *dirh;
622 struct fxp_names *names;
623 struct fxp_name *ournames;
624 struct sftp_packet *pktin;
625 struct sftp_request *req, *rreq;
626 int nnames, namesize;
630 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
635 printf("Listing directory %s\n", dirname);
637 sftp_register(req = fxp_opendir_send(dirname));
638 rreq = sftp_find_request(pktin = sftp_recv());
640 dirh = fxp_opendir_recv(pktin, rreq);
643 printf("Unable to open %s: %s\n", dirname, fxp_error());
645 nnames = namesize = 0;
650 sftp_register(req = fxp_readdir_send(dirh));
651 rreq = sftp_find_request(pktin = sftp_recv());
653 names = fxp_readdir_recv(pktin, rreq);
656 if (fxp_error_type() == SSH_FX_EOF)
658 printf("Reading directory %s: %s\n", dirname, fxp_error());
661 if (names->nnames == 0) {
662 fxp_free_names(names);
666 if (nnames + names->nnames >= namesize) {
667 namesize += names->nnames + 128;
668 ournames = sresize(ournames, namesize, struct fxp_name);
671 for (i = 0; i < names->nnames; i++)
672 ournames[nnames++] = names->names[i];
674 names->nnames = 0; /* prevent free_names */
675 fxp_free_names(names);
677 sftp_register(req = fxp_close_send(dirh));
678 rreq = sftp_find_request(pktin = sftp_recv());
680 fxp_close_recv(pktin, rreq);
683 * Now we have our filenames. Sort them by actual file
684 * name, and then output the longname parts.
686 qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare);
691 for (i = 0; i < nnames; i++)
692 printf("%s\n", ournames[i].longname);
696 /* ----------------------------------------------------------------------
697 * Helper routines that contain the actual SCP protocol elements,
698 * implemented both as SCP1 and SFTP.
701 static struct scp_sftp_dirstack {
702 struct scp_sftp_dirstack *next;
703 struct fxp_name *names;
704 int namepos, namelen;
707 int matched_something; /* wildcard match set was non-empty */
708 } *scp_sftp_dirstack_head;
709 static char *scp_sftp_remotepath, *scp_sftp_currentname;
710 static char *scp_sftp_wildcard;
711 static int scp_sftp_targetisdir, scp_sftp_donethistarget;
712 static int scp_sftp_preserve, scp_sftp_recursive;
713 static unsigned long scp_sftp_mtime, scp_sftp_atime;
714 static int scp_has_times;
715 static struct fxp_handle *scp_sftp_filehandle;
716 static struct fxp_xfer *scp_sftp_xfer;
717 static uint64 scp_sftp_fileoffset;
719 void scp_source_setup(char *target, int shouldbedir)
723 * Find out whether the target filespec is in fact a
726 struct sftp_packet *pktin;
727 struct sftp_request *req, *rreq;
728 struct fxp_attrs attrs;
732 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
737 sftp_register(req = fxp_stat_send(target));
738 rreq = sftp_find_request(pktin = sftp_recv());
740 ret = fxp_stat_recv(pktin, rreq, &attrs);
742 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS))
743 scp_sftp_targetisdir = 0;
745 scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0;
747 if (shouldbedir && !scp_sftp_targetisdir) {
748 bump("pscp: remote filespec %s: not a directory\n", target);
751 scp_sftp_remotepath = dupstr(target);
759 int scp_send_errmsg(char *str)
762 /* do nothing; we never need to send our errors to the server */
764 back->send(backhandle, "\001", 1);/* scp protocol error prefix */
765 back->send(backhandle, str, strlen(str));
767 return 0; /* can't fail */
770 int scp_send_filetimes(unsigned long mtime, unsigned long atime)
773 scp_sftp_mtime = mtime;
774 scp_sftp_atime = atime;
779 sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime);
780 back->send(backhandle, buf, strlen(buf));
785 int scp_send_filename(char *name, unsigned long size, int modes)
789 struct sftp_packet *pktin;
790 struct sftp_request *req, *rreq;
792 if (scp_sftp_targetisdir) {
793 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
795 fullname = dupstr(scp_sftp_remotepath);
798 sftp_register(req = fxp_open_send(fullname, SSH_FXF_WRITE |
799 SSH_FXF_CREAT | SSH_FXF_TRUNC));
800 rreq = sftp_find_request(pktin = sftp_recv());
802 scp_sftp_filehandle = fxp_open_recv(pktin, rreq);
804 if (!scp_sftp_filehandle) {
805 tell_user(stderr, "pscp: unable to open %s: %s",
806 fullname, fxp_error());
810 scp_sftp_fileoffset = uint64_make(0, 0);
811 scp_sftp_xfer = xfer_upload_init(scp_sftp_filehandle,
812 scp_sftp_fileoffset);
817 sprintf(buf, "C%04o %lu ", modes, size);
818 back->send(backhandle, buf, strlen(buf));
819 back->send(backhandle, name, strlen(name));
820 back->send(backhandle, "\n", 1);
825 int scp_send_filedata(char *data, int len)
829 struct sftp_packet *pktin;
831 if (!scp_sftp_filehandle) {
835 while (!xfer_upload_ready(scp_sftp_xfer)) {
837 ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin);
839 tell_user(stderr, "error while writing: %s\n", fxp_error());
845 xfer_upload_data(scp_sftp_xfer, data, len);
847 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, len);
850 int bufsize = back->send(backhandle, data, len);
853 * If the network transfer is backing up - that is, the
854 * remote site is not accepting data as fast as we can
855 * produce it - then we must loop on network events until
856 * we have space in the buffer again.
858 while (bufsize > MAX_SCP_BUFSIZE) {
859 if (ssh_sftp_loop_iteration() < 0)
861 bufsize = back->sendbuffer(backhandle);
868 int scp_send_finish(void)
871 struct fxp_attrs attrs;
872 struct sftp_packet *pktin;
873 struct sftp_request *req, *rreq;
876 while (!xfer_done(scp_sftp_xfer)) {
878 xfer_upload_gotpkt(scp_sftp_xfer, pktin);
880 xfer_cleanup(scp_sftp_xfer);
882 if (!scp_sftp_filehandle) {
886 attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME;
887 attrs.atime = scp_sftp_atime;
888 attrs.mtime = scp_sftp_mtime;
889 sftp_register(req = fxp_fsetstat_send(scp_sftp_filehandle, attrs));
890 rreq = sftp_find_request(pktin = sftp_recv());
892 ret = fxp_fsetstat_recv(pktin, rreq);
894 tell_user(stderr, "unable to set file times: %s\n", fxp_error());
898 sftp_register(req = fxp_close_send(scp_sftp_filehandle));
899 rreq = sftp_find_request(pktin = sftp_recv());
901 fxp_close_recv(pktin, rreq);
905 back->send(backhandle, "", 1);
910 char *scp_save_remotepath(void)
913 return scp_sftp_remotepath;
918 void scp_restore_remotepath(char *data)
921 scp_sftp_remotepath = data;
924 int scp_send_dirname(char *name, int modes)
929 struct fxp_attrs attrs;
930 struct sftp_packet *pktin;
931 struct sftp_request *req, *rreq;
934 if (scp_sftp_targetisdir) {
935 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
937 fullname = dupstr(scp_sftp_remotepath);
941 * We don't worry about whether we managed to create the
942 * directory, because if it exists already it's OK just to
943 * use it. Instead, we will stat it afterwards, and if it
944 * exists and is a directory we will assume we were either
945 * successful or it didn't matter.
947 sftp_register(req = fxp_mkdir_send(fullname));
948 rreq = sftp_find_request(pktin = sftp_recv());
950 ret = fxp_mkdir_recv(pktin, rreq);
955 err = "server reported no error";
957 sftp_register(req = fxp_stat_send(fullname));
958 rreq = sftp_find_request(pktin = sftp_recv());
960 ret = fxp_stat_recv(pktin, rreq, &attrs);
962 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) ||
963 !(attrs.permissions & 0040000)) {
964 tell_user(stderr, "unable to create directory %s: %s",
970 scp_sftp_remotepath = fullname;
975 sprintf(buf, "D%04o 0 ", modes);
976 back->send(backhandle, buf, strlen(buf));
977 back->send(backhandle, name, strlen(name));
978 back->send(backhandle, "\n", 1);
983 int scp_send_enddir(void)
986 sfree(scp_sftp_remotepath);
989 back->send(backhandle, "E\n", 2);
995 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
996 * That's bad. The difference is that scp_sink_setup is called once
997 * right at the start, whereas scp_sink_init is called to
998 * initialise every level of recursion in the protocol.
1000 int scp_sink_setup(char *source, int preserve, int recursive)
1006 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
1011 * It's possible that the source string we've been given
1012 * contains a wildcard. If so, we must split the directory
1013 * away from the wildcard itself (throwing an error if any
1014 * wildcardness comes before the final slash) and arrange
1015 * things so that a dirstack entry will be set up.
1017 newsource = snewn(1+strlen(source), char);
1018 if (!wc_unescape(newsource, source)) {
1019 /* Yes, here we go; it's a wildcard. Bah. */
1020 char *dupsource, *lastpart, *dirpart, *wildcard;
1021 dupsource = dupstr(source);
1022 lastpart = stripslashes(dupsource, 0);
1023 wildcard = dupstr(lastpart);
1025 if (*dupsource && dupsource[1]) {
1027 * The remains of dupsource are at least two
1028 * characters long, meaning the pathname wasn't
1029 * empty or just `/'. Hence, we remove the trailing
1032 lastpart[-1] = '\0';
1033 } else if (!*dupsource) {
1035 * The remains of dupsource are _empty_ - the whole
1036 * pathname was a wildcard. Hence we need to
1037 * replace it with ".".
1040 dupsource = dupstr(".");
1044 * Now we have separated our string into dupsource (the
1045 * directory part) and wildcard. Both of these will
1046 * need freeing at some point. Next step is to remove
1047 * wildcard escapes from the directory part, throwing
1048 * an error if it contains a real wildcard.
1050 dirpart = snewn(1+strlen(dupsource), char);
1051 if (!wc_unescape(dirpart, dupsource)) {
1052 tell_user(stderr, "%s: multiple-level wildcards unsupported",
1062 * Now we have dirpart (unescaped, ie a valid remote
1063 * path), and wildcard (a wildcard). This will be
1064 * sufficient to arrange a dirstack entry.
1066 scp_sftp_remotepath = dirpart;
1067 scp_sftp_wildcard = wildcard;
1070 scp_sftp_remotepath = newsource;
1071 scp_sftp_wildcard = NULL;
1073 scp_sftp_preserve = preserve;
1074 scp_sftp_recursive = recursive;
1075 scp_sftp_donethistarget = 0;
1076 scp_sftp_dirstack_head = NULL;
1081 int scp_sink_init(void)
1084 back->send(backhandle, "", 1);
1089 #define SCP_SINK_FILE 1
1090 #define SCP_SINK_DIR 2
1091 #define SCP_SINK_ENDDIR 3
1092 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1093 struct scp_sink_action {
1094 int action; /* FILE, DIR, ENDDIR */
1095 char *buf; /* will need freeing after use */
1096 char *name; /* filename or dirname (not ENDDIR) */
1097 int mode; /* access mode (not ENDDIR) */
1098 unsigned long size; /* file size (not ENDDIR) */
1099 int settime; /* 1 if atime and mtime are filled */
1100 unsigned long atime, mtime; /* access times for the file */
1103 int scp_get_sink_action(struct scp_sink_action *act)
1107 int must_free_fname;
1108 struct fxp_attrs attrs;
1109 struct sftp_packet *pktin;
1110 struct sftp_request *req, *rreq;
1113 if (!scp_sftp_dirstack_head) {
1114 if (!scp_sftp_donethistarget) {
1116 * Simple case: we are only dealing with one file.
1118 fname = scp_sftp_remotepath;
1119 must_free_fname = 0;
1120 scp_sftp_donethistarget = 1;
1123 * Even simpler case: one file _which we've done_.
1124 * Return 1 (finished).
1130 * We're now in the middle of stepping through a list
1131 * of names returned from fxp_readdir(); so let's carry
1134 struct scp_sftp_dirstack *head = scp_sftp_dirstack_head;
1135 while (head->namepos < head->namelen &&
1136 (is_dots(head->names[head->namepos].filename) ||
1138 !wc_match(head->wildcard,
1139 head->names[head->namepos].filename))))
1140 head->namepos++; /* skip . and .. */
1141 if (head->namepos < head->namelen) {
1142 head->matched_something = 1;
1143 fname = dupcat(head->dirpath, "/",
1144 head->names[head->namepos++].filename,
1146 must_free_fname = 1;
1149 * We've come to the end of the list; pop it off
1150 * the stack and return an ENDDIR action (or RETRY
1151 * if this was a wildcard match).
1153 if (head->wildcard) {
1154 act->action = SCP_SINK_RETRY;
1155 if (!head->matched_something) {
1156 tell_user(stderr, "pscp: wildcard '%s' matched "
1157 "no files", head->wildcard);
1160 sfree(head->wildcard);
1163 act->action = SCP_SINK_ENDDIR;
1166 sfree(head->dirpath);
1168 scp_sftp_dirstack_head = head->next;
1176 * Now we have a filename. Stat it, and see if it's a file
1179 sftp_register(req = fxp_stat_send(fname));
1180 rreq = sftp_find_request(pktin = sftp_recv());
1181 assert(rreq == req);
1182 ret = fxp_stat_recv(pktin, rreq, &attrs);
1184 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) {
1185 tell_user(stderr, "unable to identify %s: %s", fname,
1186 ret ? "file type not supplied" : fxp_error());
1191 if (attrs.permissions & 0040000) {
1192 struct scp_sftp_dirstack *newitem;
1193 struct fxp_handle *dirhandle;
1194 int nnames, namesize;
1195 struct fxp_name *ournames;
1196 struct fxp_names *names;
1199 * It's a directory. If we're not in recursive mode,
1200 * this merits a complaint (which is fatal if the name
1201 * was specified directly, but not if it was matched by
1204 * We skip this complaint completely if
1205 * scp_sftp_wildcard is set, because that's an
1206 * indication that we're not actually supposed to
1207 * _recursively_ transfer the dir, just scan it for
1208 * things matching the wildcard.
1210 if (!scp_sftp_recursive && !scp_sftp_wildcard) {
1211 tell_user(stderr, "pscp: %s: is a directory", fname);
1213 if (must_free_fname) sfree(fname);
1214 if (scp_sftp_dirstack_head) {
1215 act->action = SCP_SINK_RETRY;
1223 * Otherwise, the fun begins. We must fxp_opendir() the
1224 * directory, slurp the filenames into memory, return
1225 * SCP_SINK_DIR (unless this is a wildcard match), and
1226 * set targetisdir. The next time we're called, we will
1227 * run through the list of filenames one by one,
1228 * matching them against a wildcard if present.
1230 * If targetisdir is _already_ set (meaning we're
1231 * already in the middle of going through another such
1232 * list), we must push the other (target,namelist) pair
1235 sftp_register(req = fxp_opendir_send(fname));
1236 rreq = sftp_find_request(pktin = sftp_recv());
1237 assert(rreq == req);
1238 dirhandle = fxp_opendir_recv(pktin, rreq);
1241 tell_user(stderr, "scp: unable to open directory %s: %s",
1242 fname, fxp_error());
1243 if (must_free_fname) sfree(fname);
1247 nnames = namesize = 0;
1252 sftp_register(req = fxp_readdir_send(dirhandle));
1253 rreq = sftp_find_request(pktin = sftp_recv());
1254 assert(rreq == req);
1255 names = fxp_readdir_recv(pktin, rreq);
1257 if (names == NULL) {
1258 if (fxp_error_type() == SSH_FX_EOF)
1260 tell_user(stderr, "scp: reading directory %s: %s\n",
1261 fname, fxp_error());
1262 if (must_free_fname) sfree(fname);
1267 if (names->nnames == 0) {
1268 fxp_free_names(names);
1271 if (nnames + names->nnames >= namesize) {
1272 namesize += names->nnames + 128;
1273 ournames = sresize(ournames, namesize, struct fxp_name);
1275 for (i = 0; i < names->nnames; i++)
1276 ournames[nnames++] = names->names[i];
1277 names->nnames = 0; /* prevent free_names */
1278 fxp_free_names(names);
1280 sftp_register(req = fxp_close_send(dirhandle));
1281 rreq = sftp_find_request(pktin = sftp_recv());
1282 assert(rreq == req);
1283 fxp_close_recv(pktin, rreq);
1285 newitem = snew(struct scp_sftp_dirstack);
1286 newitem->next = scp_sftp_dirstack_head;
1287 newitem->names = ournames;
1288 newitem->namepos = 0;
1289 newitem->namelen = nnames;
1290 if (must_free_fname)
1291 newitem->dirpath = fname;
1293 newitem->dirpath = dupstr(fname);
1294 if (scp_sftp_wildcard) {
1295 newitem->wildcard = scp_sftp_wildcard;
1296 newitem->matched_something = 0;
1297 scp_sftp_wildcard = NULL;
1299 newitem->wildcard = NULL;
1301 scp_sftp_dirstack_head = newitem;
1303 if (newitem->wildcard) {
1304 act->action = SCP_SINK_RETRY;
1306 act->action = SCP_SINK_DIR;
1307 act->buf = dupstr(stripslashes(fname, 0));
1308 act->name = act->buf;
1309 act->size = 0; /* duhh, it's a directory */
1310 act->mode = 07777 & attrs.permissions;
1311 if (scp_sftp_preserve &&
1312 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1313 act->atime = attrs.atime;
1314 act->mtime = attrs.mtime;
1323 * It's a file. Return SCP_SINK_FILE.
1325 act->action = SCP_SINK_FILE;
1326 act->buf = dupstr(stripslashes(fname, 0));
1327 act->name = act->buf;
1328 if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) {
1329 if (uint64_compare(attrs.size,
1330 uint64_make(0, ULONG_MAX)) > 0) {
1331 act->size = ULONG_MAX; /* *boggle* */
1333 act->size = attrs.size.lo;
1335 act->size = ULONG_MAX; /* no idea */
1336 act->mode = 07777 & attrs.permissions;
1337 if (scp_sftp_preserve &&
1338 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1339 act->atime = attrs.atime;
1340 act->mtime = attrs.mtime;
1344 if (must_free_fname)
1345 scp_sftp_currentname = fname;
1347 scp_sftp_currentname = dupstr(fname);
1362 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1365 bump("Protocol error: Unexpected newline");
1369 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1370 bump("Lost connection");
1373 act->buf = sresize(act->buf, bufsize, char);
1376 } while (ch != '\n');
1377 act->buf[i - 1] = '\0';
1379 case '\01': /* error */
1380 tell_user(stderr, "%s\n", act->buf);
1382 continue; /* go round again */
1383 case '\02': /* fatal error */
1384 bump("%s", act->buf);
1386 back->send(backhandle, "", 1);
1387 act->action = SCP_SINK_ENDDIR;
1390 if (sscanf(act->buf, "%ld %*d %ld %*d",
1391 &act->mtime, &act->atime) == 2) {
1393 back->send(backhandle, "", 1);
1394 continue; /* go round again */
1396 bump("Protocol error: Illegal time format");
1399 act->action = (action == 'C' ? SCP_SINK_FILE : SCP_SINK_DIR);
1402 bump("Protocol error: Expected control record");
1405 * We will go round this loop only once, unless we hit
1412 * If we get here, we must have seen SCP_SINK_FILE or
1415 if (sscanf(act->buf, "%o %lu %n", &act->mode, &act->size, &i) != 2)
1416 bump("Protocol error: Illegal file descriptor format");
1417 act->name = act->buf + i;
1422 int scp_accept_filexfer(void)
1425 struct sftp_packet *pktin;
1426 struct sftp_request *req, *rreq;
1428 sftp_register(req = fxp_open_send(scp_sftp_currentname, SSH_FXF_READ));
1429 rreq = sftp_find_request(pktin = sftp_recv());
1430 assert(rreq == req);
1431 scp_sftp_filehandle = fxp_open_recv(pktin, rreq);
1433 if (!scp_sftp_filehandle) {
1434 tell_user(stderr, "pscp: unable to open %s: %s",
1435 scp_sftp_currentname, fxp_error());
1439 scp_sftp_fileoffset = uint64_make(0, 0);
1440 scp_sftp_xfer = xfer_download_init(scp_sftp_filehandle,
1441 scp_sftp_fileoffset);
1442 sfree(scp_sftp_currentname);
1445 back->send(backhandle, "", 1);
1446 return 0; /* can't fail */
1450 int scp_recv_filedata(char *data, int len)
1453 struct sftp_packet *pktin;
1457 xfer_download_queue(scp_sftp_xfer);
1458 pktin = sftp_recv();
1459 ret = xfer_download_gotpkt(scp_sftp_xfer, pktin);
1462 tell_user(stderr, "pscp: error while reading: %s", fxp_error());
1467 if (xfer_download_data(scp_sftp_xfer, &vbuf, &actuallen)) {
1469 * This assertion relies on the fact that the natural
1470 * block size used in the xfer manager is at most that
1471 * used in this module. I don't like crossing layers in
1472 * this way, but it'll do for now.
1474 assert(actuallen <= len);
1475 memcpy(data, vbuf, actuallen);
1480 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, actuallen);
1484 return ssh_scp_recv((unsigned char *) data, len);
1488 int scp_finish_filerecv(void)
1491 struct sftp_packet *pktin;
1492 struct sftp_request *req, *rreq;
1495 * Ensure that xfer_done() will work correctly, so we can
1496 * clean up any outstanding requests from the file
1499 xfer_set_error(scp_sftp_xfer);
1500 while (!xfer_done(scp_sftp_xfer)) {
1504 pktin = sftp_recv();
1505 xfer_download_gotpkt(scp_sftp_xfer, pktin);
1506 if (xfer_download_data(scp_sftp_xfer, &vbuf, &len))
1509 xfer_cleanup(scp_sftp_xfer);
1511 sftp_register(req = fxp_close_send(scp_sftp_filehandle));
1512 rreq = sftp_find_request(pktin = sftp_recv());
1513 assert(rreq == req);
1514 fxp_close_recv(pktin, rreq);
1517 back->send(backhandle, "", 1);
1522 /* ----------------------------------------------------------------------
1523 * Send an error message to the other side and to the screen.
1524 * Increment error counter.
1526 static void run_err(const char *fmt, ...)
1532 str = dupvprintf(fmt, ap);
1533 str2 = dupcat("scp: ", str, "\n", NULL);
1535 scp_send_errmsg(str2);
1536 tell_user(stderr, "%s", str2);
1542 * Execute the source part of the SCP protocol.
1544 static void source(char *src)
1547 unsigned long mtime, atime;
1552 unsigned long stat_bytes;
1553 time_t stat_starttime, stat_lasttime;
1555 attr = file_type(src);
1556 if (attr == FILE_TYPE_NONEXISTENT ||
1557 attr == FILE_TYPE_WEIRD) {
1558 run_err("%s: %s file or directory", src,
1559 (attr == FILE_TYPE_WEIRD ? "Not a" : "No such"));
1563 if (attr == FILE_TYPE_DIRECTORY) {
1566 * Avoid . and .. directories.
1569 p = strrchr(src, '/');
1571 p = strrchr(src, '\\');
1576 if (!strcmp(p, ".") || !strcmp(p, ".."))
1577 /* skip . and .. */ ;
1581 run_err("%s: not a regular file", src);
1586 if ((last = strrchr(src, '/')) == NULL)
1590 if (strrchr(last, '\\') != NULL)
1591 last = strrchr(last, '\\') + 1;
1592 if (last == src && strchr(src, ':') != NULL)
1593 last = strchr(src, ':') + 1;
1595 f = open_existing_file(src, &size, &mtime, &atime);
1597 run_err("%s: Cannot open file", src);
1601 if (scp_send_filetimes(mtime, atime))
1606 tell_user(stderr, "Sending file %s, size=%lu", last, size);
1607 if (scp_send_filename(last, size, 0644))
1611 stat_starttime = time(NULL);
1614 for (i = 0; i < size; i += 4096) {
1615 char transbuf[4096];
1620 if ((j = read_from_file(f, transbuf, k)) != k) {
1623 bump("%s: Read error", src);
1625 if (scp_send_filedata(transbuf, k))
1626 bump("%s: Network error occurred", src);
1630 if (time(NULL) != stat_lasttime || i + k == size) {
1631 stat_lasttime = time(NULL);
1632 print_stats(last, size, stat_bytes,
1633 stat_starttime, stat_lasttime);
1640 (void) scp_send_finish();
1644 * Recursively send the contents of a directory.
1646 static void rsource(char *src)
1652 if ((last = strrchr(src, '/')) == NULL)
1656 if (strrchr(last, '\\') != NULL)
1657 last = strrchr(last, '\\') + 1;
1658 if (last == src && strchr(src, ':') != NULL)
1659 last = strchr(src, ':') + 1;
1661 /* maybe send filetime */
1663 save_target = scp_save_remotepath();
1666 tell_user(stderr, "Entering directory: %s", last);
1667 if (scp_send_dirname(last, 0755))
1670 dir = open_directory(src);
1673 while ((filename = read_filename(dir)) != NULL) {
1674 char *foundfile = dupcat(src, "/", filename, NULL);
1680 close_directory(dir);
1682 (void) scp_send_enddir();
1684 scp_restore_remotepath(save_target);
1688 * Execute the sink part of the SCP protocol.
1690 static void sink(char *targ, char *src)
1697 unsigned long received;
1699 unsigned long stat_bytes;
1700 time_t stat_starttime, stat_lasttime;
1703 attr = file_type(targ);
1704 if (attr == FILE_TYPE_DIRECTORY)
1707 if (targetshouldbedirectory && !targisdir)
1708 bump("%s: Not a directory", targ);
1712 struct scp_sink_action act;
1713 if (scp_get_sink_action(&act))
1716 if (act.action == SCP_SINK_ENDDIR)
1719 if (act.action == SCP_SINK_RETRY)
1724 * Prevent the remote side from maliciously writing to
1725 * files outside the target area by sending a filename
1726 * containing `../'. In fact, it shouldn't be sending
1727 * filenames with any slashes or colons in at all; so
1728 * we'll find the last slash, backslash or colon in the
1729 * filename and use only the part after that. (And
1732 * In addition, we also ensure here that if we're
1733 * copying a single file and the target is a directory
1734 * (common usage: `pscp host:filename .') the remote
1735 * can't send us a _different_ file name. We can
1736 * distinguish this case because `src' will be non-NULL
1737 * and the last component of that will fail to match
1738 * (the last component of) the name sent.
1740 * Well, not always; if `src' is a wildcard, we do
1741 * expect to get back filenames that don't correspond
1742 * exactly to it. Ideally in this case, we would like
1743 * to ensure that the returned filename actually
1744 * matches the wildcard pattern - but one of SCP's
1745 * protocol infelicities is that wildcard matching is
1746 * done at the server end _by the server's rules_ and
1747 * so in general this is infeasible. Hence, we only
1748 * accept filenames that don't correspond to `src' if
1749 * unsafe mode is enabled or we are using SFTP (which
1750 * resolves remote wildcards on the client side and can
1753 char *striptarget, *stripsrc;
1755 striptarget = stripslashes(act.name, 1);
1756 if (striptarget != act.name) {
1757 tell_user(stderr, "warning: remote host sent a compound"
1758 " pathname '%s'", act.name);
1759 tell_user(stderr, " renaming local file to '%s'",
1764 * Also check to see if the target filename is '.' or
1765 * '..', or indeed '...' and so on because Windows
1766 * appears to interpret those like '..'.
1768 if (is_dots(striptarget)) {
1769 bump("security violation: remote host attempted to write to"
1770 " a '.' or '..' path!");
1774 stripsrc = stripslashes(src, 1);
1775 if (strcmp(striptarget, stripsrc) &&
1776 !using_sftp && !scp_unsafe_mode) {
1777 tell_user(stderr, "warning: remote host tried to write "
1778 "to a file called '%s'", striptarget);
1779 tell_user(stderr, " when we requested a file "
1780 "called '%s'.", stripsrc);
1781 tell_user(stderr, " If this is a wildcard, "
1782 "consider upgrading to SSH 2 or using");
1783 tell_user(stderr, " the '-unsafe' option. Renaming"
1784 " of this file has been disallowed.");
1785 /* Override the name the server provided with our own. */
1786 striptarget = stripsrc;
1790 if (targ[0] != '\0')
1791 destfname = dir_file_cat(targ, striptarget);
1793 destfname = dupstr(striptarget);
1796 * In this branch of the if, the target area is a
1797 * single file with an explicitly specified name in any
1798 * case, so there's no danger.
1800 destfname = dupstr(targ);
1802 attr = file_type(destfname);
1803 exists = (attr != FILE_TYPE_NONEXISTENT);
1805 if (act.action == SCP_SINK_DIR) {
1806 if (exists && attr != FILE_TYPE_DIRECTORY) {
1807 run_err("%s: Not a directory", destfname);
1811 if (!create_directory(destfname)) {
1812 run_err("%s: Cannot create directory", destfname);
1816 sink(destfname, NULL);
1817 /* can we set the timestamp for directories ? */
1821 f = open_new_file(destfname);
1823 run_err("%s: Cannot create file", destfname);
1827 if (scp_accept_filexfer())
1831 stat_starttime = time(NULL);
1833 stat_name = stripslashes(destfname, 1);
1836 while (received < act.size) {
1837 char transbuf[4096];
1838 unsigned long blksize;
1841 if (blksize > (act.size - received))
1842 blksize = act.size - received;
1843 read = scp_recv_filedata(transbuf, (int)blksize);
1845 bump("Lost connection");
1848 if (write_to_file(f, transbuf, read) != (int)read) {
1850 /* FIXME: in sftp we can actually abort the transfer */
1852 printf("\r%-25.25s | %50s\n",
1854 "Write error.. waiting for end of file");
1859 if (time(NULL) > stat_lasttime ||
1860 received + read == act.size) {
1861 stat_lasttime = time(NULL);
1862 print_stats(stat_name, act.size, stat_bytes,
1863 stat_starttime, stat_lasttime);
1869 set_file_times(f, act.mtime, act.atime);
1874 run_err("%s: Write error", destfname);
1877 (void) scp_finish_filerecv();
1884 * We will copy local files to a remote server.
1886 static void toremote(int argc, char *argv[])
1888 char *src, *targ, *host, *user;
1892 targ = argv[argc - 1];
1894 /* Separate host from filename */
1898 bump("targ == NULL in toremote()");
1902 /* Substitute "." for emtpy target */
1904 /* Separate host and username */
1906 host = strrchr(host, '@');
1917 if (colon(argv[0]) != NULL)
1918 bump("%s: Remote to remote not supported", argv[0]);
1920 wc_type = test_wildcard(argv[0], 1);
1921 if (wc_type == WCTYPE_NONEXISTENT)
1922 bump("%s: No such file or directory\n", argv[0]);
1923 else if (wc_type == WCTYPE_WILDCARD)
1924 targetshouldbedirectory = 1;
1927 cmd = dupprintf("scp%s%s%s%s -t %s",
1928 verbose ? " -v" : "",
1929 recursive ? " -r" : "",
1930 preserve ? " -p" : "",
1931 targetshouldbedirectory ? " -d" : "", targ);
1932 do_cmd(host, user, cmd);
1935 scp_source_setup(targ, targetshouldbedirectory);
1937 for (i = 0; i < argc - 1; i++) {
1939 if (colon(src) != NULL) {
1940 tell_user(stderr, "%s: Remote to remote not supported\n", src);
1945 wc_type = test_wildcard(src, 1);
1946 if (wc_type == WCTYPE_NONEXISTENT) {
1947 run_err("%s: No such file or directory", src);
1949 } else if (wc_type == WCTYPE_FILENAME) {
1953 WildcardMatcher *wc;
1956 wc = begin_wildcard_matching(src);
1958 run_err("%s: No such file or directory", src);
1962 while ((filename = wildcard_get_filename(wc)) != NULL) {
1967 finish_wildcard_matching(wc);
1973 * We will copy files from a remote server to the local machine.
1975 static void tolocal(int argc, char *argv[])
1977 char *src, *targ, *host, *user;
1981 bump("More than one remote source not supported");
1986 /* Separate host from filename */
1990 bump("Local to local copy not supported");
1994 /* Substitute "." for empty filename */
1996 /* Separate username and hostname */
1998 host = strrchr(host, '@');
2008 cmd = dupprintf("scp%s%s%s%s -f %s",
2009 verbose ? " -v" : "",
2010 recursive ? " -r" : "",
2011 preserve ? " -p" : "",
2012 targetshouldbedirectory ? " -d" : "", src);
2013 do_cmd(host, user, cmd);
2016 if (scp_sink_setup(src, preserve, recursive))
2023 * We will issue a list command to get a remote directory.
2025 static void get_dir_list(int argc, char *argv[])
2027 char *src, *host, *user;
2033 /* Separate host from filename */
2037 bump("Local to local copy not supported");
2041 /* Substitute "." for empty filename */
2043 /* Separate username and hostname */
2045 host = strrchr(host, '@');
2055 cmd = snewn(4 * strlen(src) + 100, char);
2056 strcpy(cmd, "ls -la '");
2057 p = cmd + strlen(cmd);
2058 for (q = src; *q; q++) {
2071 do_cmd(host, user, cmd);
2075 scp_sftp_listdir(src);
2077 while (ssh_scp_recv((unsigned char *) &c, 1) > 0)
2078 tell_char(stdout, c);
2083 * Short description of parameters.
2085 static void usage(void)
2087 printf("PuTTY Secure Copy client\n");
2088 printf("%s\n", ver);
2089 printf("Usage: pscp [options] [user@]host:source target\n");
2091 (" pscp [options] source [source...] [user@]host:target\n");
2092 printf(" pscp [options] -ls [user@]host:filespec\n");
2093 printf("Options:\n");
2094 printf(" -p preserve file attributes\n");
2095 printf(" -q quiet, don't show statistics\n");
2096 printf(" -r copy directories recursively\n");
2097 printf(" -v show verbose messages\n");
2098 printf(" -load sessname Load settings from saved session\n");
2099 printf(" -P port connect to specified port\n");
2100 printf(" -l user connect with specified username\n");
2101 printf(" -pw passw login with specified password\n");
2102 printf(" -1 -2 force use of particular SSH protocol version\n");
2103 printf(" -C enable compression\n");
2104 printf(" -i key private key file for authentication\n");
2105 printf(" -batch disable all interactive prompts\n");
2106 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2107 printf(" -V print version information\n");
2108 printf(" -sftp force use of SFTP protocol\n");
2109 printf(" -scp force use of SCP protocol\n");
2112 * -gui is an internal option, used by GUI front ends to get
2113 * pscp to pass progress reports back to them. It's not an
2114 * ordinary user-accessible option, so it shouldn't be part of
2115 * the command-line help. The only people who need to know
2116 * about it are programmers, and they can read the source.
2119 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2126 printf("pscp: %s\n", ver);
2130 void cmdline_error(char *p, ...)
2133 fprintf(stderr, "pscp: ");
2135 vfprintf(stderr, p, ap);
2137 fprintf(stderr, "\n try typing just \"pscp\" for help\n");
2142 * Main program. (Called `psftp_main' because it gets called from
2143 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2145 int psftp_main(int argc, char *argv[])
2149 default_protocol = PROT_TELNET;
2152 #ifdef FLAG_SYNCAGENT
2156 cmdline_tooltype = TOOLTYPE_FILETRANSFER;
2157 ssh_get_line = &console_get_line;
2160 for (i = 1; i < argc; i++) {
2162 if (argv[i][0] != '-')
2164 ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, &cfg);
2166 cmdline_error("option \"%s\" requires an argument", argv[i]);
2167 } else if (ret == 2) {
2168 i++; /* skip next argument */
2169 } else if (ret == 1) {
2170 /* We have our own verbosity in addition to `flags'. */
2171 if (flags & FLAG_VERBOSE)
2173 } else if (strcmp(argv[i], "-r") == 0) {
2175 } else if (strcmp(argv[i], "-p") == 0) {
2177 } else if (strcmp(argv[i], "-q") == 0) {
2179 } else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-?") == 0) {
2181 } else if (strcmp(argv[i], "-V") == 0) {
2183 } else if (strcmp(argv[i], "-gui") == 0 && i + 1 < argc) {
2184 gui_enable(argv[++i]);
2186 console_batch_mode = TRUE;
2187 } else if (strcmp(argv[i], "-ls") == 0) {
2189 } else if (strcmp(argv[i], "-batch") == 0) {
2190 console_batch_mode = 1;
2191 } else if (strcmp(argv[i], "-unsafe") == 0) {
2192 scp_unsafe_mode = 1;
2193 } else if (strcmp(argv[i], "-sftp") == 0) {
2194 try_scp = 0; try_sftp = 1;
2195 } else if (strcmp(argv[i], "-scp") == 0) {
2196 try_scp = 1; try_sftp = 0;
2197 } else if (strcmp(argv[i], "--") == 0) {
2201 cmdline_error("unknown option \"%s\"", argv[i]);
2211 get_dir_list(argc, argv);
2218 targetshouldbedirectory = 1;
2220 if (colon(argv[argc - 1]) != NULL)
2221 toremote(argc, argv);
2223 tolocal(argc, argv);
2226 if (back != NULL && back->socket(backhandle) != NULL) {
2228 back->special(backhandle, TS_EOF);
2229 ssh_scp_recv((unsigned char *) &ch, 1);
2234 gui_send_errcount(list, errs);
2237 console_provide_logctx(NULL);
2238 back->free(backhandle);
2242 return (errs == 0 ? 0 : 1);