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
31 static int verbose = 0;
32 static int recursive = 0;
33 static int preserve = 0;
34 static int targetshouldbedirectory = 0;
35 static int statistics = 1;
36 static int prev_stats_len = 0;
37 static int scp_unsafe_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);
53 const char *const appname = "PSCP";
56 * The maximum amount of queued data we accept before we stop and
57 * wait for the server to process some.
59 #define MAX_SCP_BUFSIZE 16384
61 void ldisc_send(void *handle, char *buf, int len, int interactive)
64 * This is only here because of the calls to ldisc_send(NULL,
65 * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc
66 * as an ldisc. So if we get called with any real data, I want
72 static void tell_char(FILE * stream, char c)
77 static void tell_str(FILE * stream, char *str)
81 for (i = 0; i < strlen(str); ++i)
82 tell_char(stream, str[i]);
85 static void tell_user(FILE * stream, char *fmt, ...)
90 str = dupvprintf(fmt, ap);
92 str2 = dupcat(str, "\n", NULL);
94 tell_str(stream, str2);
99 * Print an error message and perform a fatal exit.
101 void fatalbox(char *fmt, ...)
106 str = dupvprintf(fmt, ap);
107 str2 = dupcat("Fatal: ", str, "\n", NULL);
110 tell_str(stderr, str2);
116 void modalfatalbox(char *fmt, ...)
121 str = dupvprintf(fmt, ap);
122 str2 = dupcat("Fatal: ", str, "\n", NULL);
125 tell_str(stderr, str2);
131 void connection_fatal(void *frontend, char *fmt, ...)
136 str = dupvprintf(fmt, ap);
137 str2 = dupcat("Fatal: ", str, "\n", NULL);
140 tell_str(stderr, str2);
148 * In pscp, all agent requests should be synchronous, so this is a
151 void agent_schedule_callback(void (*callback)(void *, void *, int),
152 void *callback_ctx, void *data, int len)
154 assert(!"We shouldn't be here");
158 * Receive a block of data from the SSH link. Block until all data
161 * To do this, we repeatedly call the SSH protocol module, with our
162 * own trap in from_backend() to catch the data that comes back. We
163 * do this until we have enough data.
166 static unsigned char *outptr; /* where to put the data */
167 static unsigned outlen; /* how much data required */
168 static unsigned char *pending = NULL; /* any spare data */
169 static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */
170 int from_backend(void *frontend, int is_stderr, const char *data, int datalen)
172 unsigned char *p = (unsigned char *) data;
173 unsigned len = (unsigned) datalen;
176 * stderr data is just spouted to local stderr and otherwise
181 if (fwrite(data, 1, len, stderr) < len)
186 if ((outlen > 0) && (len > 0)) {
187 unsigned used = outlen;
190 memcpy(outptr, p, used);
198 if (pendsize < pendlen + len) {
199 pendsize = pendlen + len + 4096;
200 pending = sresize(pending, pendsize, unsigned char);
202 memcpy(pending + pendlen, p, len);
208 int from_backend_untrusted(void *frontend_handle, const char *data, int len)
211 * No "untrusted" output should get here (the way the code is
212 * currently, it's all diverted by FLAG_STDERR).
214 assert(!"Unexpected call to from_backend_untrusted()");
215 return 0; /* not reached */
217 static int ssh_scp_recv(unsigned char *buf, int len)
223 * See if the pending-input block contains some of what we
227 unsigned pendused = pendlen;
228 if (pendused > outlen)
230 memcpy(outptr, pending, pendused);
231 memmove(pending, pending + pendused, pendlen - pendused);
245 if (back->exitcode(backhandle) >= 0 || ssh_sftp_loop_iteration() < 0)
253 * Loop through the ssh connection and authentication process.
255 static void ssh_scp_init(void)
257 while (!back->sendok(backhandle)) {
258 if (back->exitcode(backhandle) >= 0) {
262 if (ssh_sftp_loop_iteration() < 0) {
268 /* Work out which backend we ended up using. */
269 if (!ssh_fallback_cmd(backhandle))
270 using_sftp = main_cmd_is_sftp;
272 using_sftp = fallback_cmd_is_sftp;
276 tell_user(stderr, "Using SFTP");
278 tell_user(stderr, "Using SCP1");
283 * Print an error message and exit after closing the SSH link.
285 static void bump(char *fmt, ...)
290 str = dupvprintf(fmt, ap);
292 str2 = dupcat(str, "\n", NULL);
294 tell_str(stderr, str2);
298 if (back != NULL && back->connected(backhandle)) {
300 back->special(backhandle, TS_EOF);
301 ssh_scp_recv((unsigned char *) &ch, 1);
308 * Open an SSH connection to user@host and execute cmd.
310 static void do_cmd(char *host, char *user, char *cmd)
316 if (host == NULL || host[0] == '\0')
317 bump("Empty host name");
320 * Remove fiddly bits of address: remove a colon suffix, and
321 * the square brackets around an IPv6 literal address.
323 if (host[0] == '[') {
325 host[strcspn(host, "]")] = '\0';
327 host[strcspn(host, ":")] = '\0';
331 * If we haven't loaded session details already (e.g., from -load),
332 * try looking for a session called "host".
334 if (!loaded_session) {
335 /* Try to load settings for `host' into a temporary config */
338 do_defaults(host, &cfg2);
339 if (cfg2.host[0] != '\0') {
340 /* Settings present and include hostname */
341 /* Re-load data into the real config. */
342 do_defaults(host, &cfg);
344 /* Session doesn't exist or mention a hostname. */
345 /* Use `host' as a bare hostname. */
346 strncpy(cfg.host, host, sizeof(cfg.host) - 1);
347 cfg.host[sizeof(cfg.host) - 1] = '\0';
350 /* Patch in hostname `host' to session details. */
351 strncpy(cfg.host, host, sizeof(cfg.host) - 1);
352 cfg.host[sizeof(cfg.host) - 1] = '\0';
356 * Force use of SSH. (If they got the protocol wrong we assume the
357 * port is useless too.)
359 if (cfg.protocol != PROT_SSH) {
360 cfg.protocol = PROT_SSH;
365 * Enact command-line overrides.
367 cmdline_run_saved(&cfg);
370 * Trim leading whitespace off the hostname if it's there.
373 int space = strspn(cfg.host, " \t");
374 memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space);
377 /* See if host is of the form user@host */
378 if (cfg.host[0] != '\0') {
379 char *atsign = strrchr(cfg.host, '@');
380 /* Make sure we're not overflowing the user field */
382 if (atsign - cfg.host < sizeof cfg.username) {
383 strncpy(cfg.username, cfg.host, atsign - cfg.host);
384 cfg.username[atsign - cfg.host] = '\0';
386 memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1));
391 * Remove any remaining whitespace from the hostname.
395 while (cfg.host[p2] != '\0') {
396 if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') {
397 cfg.host[p1] = cfg.host[p2];
406 if (user != NULL && user[0] != '\0') {
407 strncpy(cfg.username, user, sizeof(cfg.username) - 1);
408 cfg.username[sizeof(cfg.username) - 1] = '\0';
409 } else if (cfg.username[0] == '\0') {
410 user = get_username();
412 bump("Empty user name");
415 tell_user(stderr, "Guessing user name: %s", user);
416 strncpy(cfg.username, user, sizeof(cfg.username) - 1);
417 cfg.username[sizeof(cfg.username) - 1] = '\0';
423 * Disable scary things which shouldn't be enabled for simple
424 * things like SCP and SFTP: agent forwarding, port forwarding,
429 cfg.portfwd[0] = cfg.portfwd[1] = '\0';
430 cfg.ssh_simple = TRUE;
433 * Set up main and possibly fallback command depending on
434 * options specified by user.
435 * Attempt to start the SFTP subsystem as a first choice,
436 * falling back to the provided scp command if that fails.
438 cfg.remote_cmd_ptr2 = NULL;
440 /* First choice is SFTP subsystem. */
441 main_cmd_is_sftp = 1;
442 strcpy(cfg.remote_cmd, "sftp");
443 cfg.ssh_subsys = TRUE;
445 /* Fallback is to use the provided scp command. */
446 fallback_cmd_is_sftp = 0;
447 cfg.remote_cmd_ptr2 = cmd;
448 cfg.ssh_subsys2 = FALSE;
450 /* Since we're not going to try SCP, we may as well try
451 * harder to find an SFTP server, since in the current
452 * implementation we have a spare slot. */
453 fallback_cmd_is_sftp = 1;
454 /* see psftp.c for full explanation of this kludge */
455 cfg.remote_cmd_ptr2 =
456 "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n"
457 "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n"
459 cfg.ssh_subsys2 = FALSE;
462 /* Don't try SFTP at all; just try the scp command. */
463 main_cmd_is_sftp = 0;
464 cfg.remote_cmd_ptr = cmd;
465 cfg.ssh_subsys = FALSE;
471 err = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port, &realhost,
472 0, cfg.tcp_keepalives);
474 bump("ssh_init: %s", err);
475 logctx = log_init(NULL, &cfg);
476 back->provide_logctx(backhandle, logctx);
477 console_provide_logctx(logctx);
479 if (verbose && realhost != NULL && errs == 0)
480 tell_user(stderr, "Connected to %s\n", realhost);
485 * Update statistic information about current file.
487 static void print_stats(char *name, uint64 size, uint64 done,
488 time_t start, time_t now)
499 elap = (unsigned long) difftime(now, start);
502 ratebs = (float) (uint64_to_double(done) / elap);
504 ratebs = (float) uint64_to_double(done);
507 eta = (unsigned long) (uint64_to_double(uint64_subtract(size, done)));
509 eta = (unsigned long)
510 ((uint64_to_double(uint64_subtract(size, done)) / ratebs));
513 etastr = dupprintf("%02ld:%02ld:%02ld",
514 eta / 3600, (eta % 3600) / 60, eta % 60);
516 donedbl = uint64_to_double(done);
517 sizedbl = uint64_to_double(size);
518 pct = (int) (100 * (donedbl * 1.0 / sizedbl));
522 /* divide by 1024 to provide kB */
523 uint64_decimal(uint64_shift_right(done, 10), donekb);
524 len = printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
526 donekb, ratebs / 1024.0, etastr, pct);
527 if (len < prev_stats_len)
528 printf("%*s", prev_stats_len - len, "");
529 prev_stats_len = len;
531 if (uint64_compare(done, size) == 0)
541 * Find a colon in str and return a pointer to the colon.
542 * This is used to separate hostname from filename.
544 static char *colon(char *str)
546 /* We ignore a leading colon, since the hostname cannot be
547 empty. We also ignore a colon as second character because
548 of filenames like f:myfile.txt. */
549 if (str[0] == '\0' || str[0] == ':' ||
550 (str[0] != '[' && str[1] == ':'))
552 while (*str != '\0' && *str != ':' && *str != '/' && *str != '\\') {
554 /* Skip over IPv6 literal addresses
555 * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */
556 char *ipv6_end = strchr(str, ']');
570 * Return a pointer to the portion of str that comes after the last
571 * slash (or backslash or colon, if `local' is TRUE).
573 static char *stripslashes(char *str, int local)
578 p = strchr(str, ':');
582 p = strrchr(str, '/');
586 p = strrchr(str, '\\');
594 * Determine whether a string is entirely composed of dots.
596 static int is_dots(char *str)
598 return str[strspn(str, ".")] == '\0';
602 * Wait for a response from the other side.
603 * Return 0 if ok, -1 if error.
605 static int response(void)
607 char ch, resp, rbuf[2048];
610 if (ssh_scp_recv((unsigned char *) &resp, 1) <= 0)
611 bump("Lost connection");
621 case 2: /* fatal error */
623 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
624 bump("Protocol error: Lost connection");
626 } while (p < sizeof(rbuf) && ch != '\n');
629 tell_user(stderr, "%s\n", rbuf);
637 int sftp_recvdata(char *buf, int len)
639 return ssh_scp_recv((unsigned char *) buf, len);
641 int sftp_senddata(char *buf, int len)
643 back->send(backhandle, buf, len);
647 /* ----------------------------------------------------------------------
648 * sftp-based replacement for the hacky `pscp -ls'.
650 static int sftp_ls_compare(const void *av, const void *bv)
652 const struct fxp_name *a = (const struct fxp_name *) av;
653 const struct fxp_name *b = (const struct fxp_name *) bv;
654 return strcmp(a->filename, b->filename);
656 void scp_sftp_listdir(char *dirname)
658 struct fxp_handle *dirh;
659 struct fxp_names *names;
660 struct fxp_name *ournames;
661 struct sftp_packet *pktin;
662 struct sftp_request *req, *rreq;
663 int nnames, namesize;
667 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
672 printf("Listing directory %s\n", dirname);
674 sftp_register(req = fxp_opendir_send(dirname));
675 rreq = sftp_find_request(pktin = sftp_recv());
677 dirh = fxp_opendir_recv(pktin, rreq);
680 printf("Unable to open %s: %s\n", dirname, fxp_error());
682 nnames = namesize = 0;
687 sftp_register(req = fxp_readdir_send(dirh));
688 rreq = sftp_find_request(pktin = sftp_recv());
690 names = fxp_readdir_recv(pktin, rreq);
693 if (fxp_error_type() == SSH_FX_EOF)
695 printf("Reading directory %s: %s\n", dirname, fxp_error());
698 if (names->nnames == 0) {
699 fxp_free_names(names);
703 if (nnames + names->nnames >= namesize) {
704 namesize += names->nnames + 128;
705 ournames = sresize(ournames, namesize, struct fxp_name);
708 for (i = 0; i < names->nnames; i++)
709 ournames[nnames++] = names->names[i];
710 names->nnames = 0; /* prevent free_names */
711 fxp_free_names(names);
713 sftp_register(req = fxp_close_send(dirh));
714 rreq = sftp_find_request(pktin = sftp_recv());
716 fxp_close_recv(pktin, rreq);
719 * Now we have our filenames. Sort them by actual file
720 * name, and then output the longname parts.
722 qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare);
727 for (i = 0; i < nnames; i++)
728 printf("%s\n", ournames[i].longname);
732 /* ----------------------------------------------------------------------
733 * Helper routines that contain the actual SCP protocol elements,
734 * implemented both as SCP1 and SFTP.
737 static struct scp_sftp_dirstack {
738 struct scp_sftp_dirstack *next;
739 struct fxp_name *names;
740 int namepos, namelen;
743 int matched_something; /* wildcard match set was non-empty */
744 } *scp_sftp_dirstack_head;
745 static char *scp_sftp_remotepath, *scp_sftp_currentname;
746 static char *scp_sftp_wildcard;
747 static int scp_sftp_targetisdir, scp_sftp_donethistarget;
748 static int scp_sftp_preserve, scp_sftp_recursive;
749 static unsigned long scp_sftp_mtime, scp_sftp_atime;
750 static int scp_has_times;
751 static struct fxp_handle *scp_sftp_filehandle;
752 static struct fxp_xfer *scp_sftp_xfer;
753 static uint64 scp_sftp_fileoffset;
755 int scp_source_setup(char *target, int shouldbedir)
759 * Find out whether the target filespec is in fact a
762 struct sftp_packet *pktin;
763 struct sftp_request *req, *rreq;
764 struct fxp_attrs attrs;
768 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
773 sftp_register(req = fxp_stat_send(target));
774 rreq = sftp_find_request(pktin = sftp_recv());
776 ret = fxp_stat_recv(pktin, rreq, &attrs);
778 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS))
779 scp_sftp_targetisdir = 0;
781 scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0;
783 if (shouldbedir && !scp_sftp_targetisdir) {
784 bump("pscp: remote filespec %s: not a directory\n", target);
787 scp_sftp_remotepath = dupstr(target);
796 int scp_send_errmsg(char *str)
799 /* do nothing; we never need to send our errors to the server */
801 back->send(backhandle, "\001", 1);/* scp protocol error prefix */
802 back->send(backhandle, str, strlen(str));
804 return 0; /* can't fail */
807 int scp_send_filetimes(unsigned long mtime, unsigned long atime)
810 scp_sftp_mtime = mtime;
811 scp_sftp_atime = atime;
816 sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime);
817 back->send(backhandle, buf, strlen(buf));
822 int scp_send_filename(char *name, uint64 size, int modes)
826 struct sftp_packet *pktin;
827 struct sftp_request *req, *rreq;
829 if (scp_sftp_targetisdir) {
830 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
832 fullname = dupstr(scp_sftp_remotepath);
835 sftp_register(req = fxp_open_send(fullname, SSH_FXF_WRITE |
836 SSH_FXF_CREAT | SSH_FXF_TRUNC));
837 rreq = sftp_find_request(pktin = sftp_recv());
839 scp_sftp_filehandle = fxp_open_recv(pktin, rreq);
841 if (!scp_sftp_filehandle) {
842 tell_user(stderr, "pscp: unable to open %s: %s",
843 fullname, fxp_error());
847 scp_sftp_fileoffset = uint64_make(0, 0);
848 scp_sftp_xfer = xfer_upload_init(scp_sftp_filehandle,
849 scp_sftp_fileoffset);
855 uint64_decimal(size, sizestr);
856 sprintf(buf, "C%04o %s ", modes, sizestr);
857 back->send(backhandle, buf, strlen(buf));
858 back->send(backhandle, name, strlen(name));
859 back->send(backhandle, "\n", 1);
864 int scp_send_filedata(char *data, int len)
868 struct sftp_packet *pktin;
870 if (!scp_sftp_filehandle) {
874 while (!xfer_upload_ready(scp_sftp_xfer)) {
876 ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin);
878 tell_user(stderr, "error while writing: %s\n", fxp_error());
884 xfer_upload_data(scp_sftp_xfer, data, len);
886 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, len);
889 int bufsize = back->send(backhandle, data, len);
892 * If the network transfer is backing up - that is, the
893 * remote site is not accepting data as fast as we can
894 * produce it - then we must loop on network events until
895 * we have space in the buffer again.
897 while (bufsize > MAX_SCP_BUFSIZE) {
898 if (ssh_sftp_loop_iteration() < 0)
900 bufsize = back->sendbuffer(backhandle);
907 int scp_send_finish(void)
910 struct fxp_attrs attrs;
911 struct sftp_packet *pktin;
912 struct sftp_request *req, *rreq;
915 while (!xfer_done(scp_sftp_xfer)) {
917 xfer_upload_gotpkt(scp_sftp_xfer, pktin);
919 xfer_cleanup(scp_sftp_xfer);
921 if (!scp_sftp_filehandle) {
925 attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME;
926 attrs.atime = scp_sftp_atime;
927 attrs.mtime = scp_sftp_mtime;
928 sftp_register(req = fxp_fsetstat_send(scp_sftp_filehandle, attrs));
929 rreq = sftp_find_request(pktin = sftp_recv());
931 ret = fxp_fsetstat_recv(pktin, rreq);
933 tell_user(stderr, "unable to set file times: %s\n", fxp_error());
937 sftp_register(req = fxp_close_send(scp_sftp_filehandle));
938 rreq = sftp_find_request(pktin = sftp_recv());
940 fxp_close_recv(pktin, rreq);
944 back->send(backhandle, "", 1);
949 char *scp_save_remotepath(void)
952 return scp_sftp_remotepath;
957 void scp_restore_remotepath(char *data)
960 scp_sftp_remotepath = data;
963 int scp_send_dirname(char *name, int modes)
968 struct fxp_attrs attrs;
969 struct sftp_packet *pktin;
970 struct sftp_request *req, *rreq;
973 if (scp_sftp_targetisdir) {
974 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
976 fullname = dupstr(scp_sftp_remotepath);
980 * We don't worry about whether we managed to create the
981 * directory, because if it exists already it's OK just to
982 * use it. Instead, we will stat it afterwards, and if it
983 * exists and is a directory we will assume we were either
984 * successful or it didn't matter.
986 sftp_register(req = fxp_mkdir_send(fullname));
987 rreq = sftp_find_request(pktin = sftp_recv());
989 ret = fxp_mkdir_recv(pktin, rreq);
994 err = "server reported no error";
996 sftp_register(req = fxp_stat_send(fullname));
997 rreq = sftp_find_request(pktin = sftp_recv());
999 ret = fxp_stat_recv(pktin, rreq, &attrs);
1001 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) ||
1002 !(attrs.permissions & 0040000)) {
1003 tell_user(stderr, "unable to create directory %s: %s",
1009 scp_sftp_remotepath = fullname;
1014 sprintf(buf, "D%04o 0 ", modes);
1015 back->send(backhandle, buf, strlen(buf));
1016 back->send(backhandle, name, strlen(name));
1017 back->send(backhandle, "\n", 1);
1022 int scp_send_enddir(void)
1025 sfree(scp_sftp_remotepath);
1028 back->send(backhandle, "E\n", 2);
1034 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1035 * That's bad. The difference is that scp_sink_setup is called once
1036 * right at the start, whereas scp_sink_init is called to
1037 * initialise every level of recursion in the protocol.
1039 int scp_sink_setup(char *source, int preserve, int recursive)
1045 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
1050 * It's possible that the source string we've been given
1051 * contains a wildcard. If so, we must split the directory
1052 * away from the wildcard itself (throwing an error if any
1053 * wildcardness comes before the final slash) and arrange
1054 * things so that a dirstack entry will be set up.
1056 newsource = snewn(1+strlen(source), char);
1057 if (!wc_unescape(newsource, source)) {
1058 /* Yes, here we go; it's a wildcard. Bah. */
1059 char *dupsource, *lastpart, *dirpart, *wildcard;
1060 dupsource = dupstr(source);
1061 lastpart = stripslashes(dupsource, 0);
1062 wildcard = dupstr(lastpart);
1064 if (*dupsource && dupsource[1]) {
1066 * The remains of dupsource are at least two
1067 * characters long, meaning the pathname wasn't
1068 * empty or just `/'. Hence, we remove the trailing
1071 lastpart[-1] = '\0';
1072 } else if (!*dupsource) {
1074 * The remains of dupsource are _empty_ - the whole
1075 * pathname was a wildcard. Hence we need to
1076 * replace it with ".".
1079 dupsource = dupstr(".");
1083 * Now we have separated our string into dupsource (the
1084 * directory part) and wildcard. Both of these will
1085 * need freeing at some point. Next step is to remove
1086 * wildcard escapes from the directory part, throwing
1087 * an error if it contains a real wildcard.
1089 dirpart = snewn(1+strlen(dupsource), char);
1090 if (!wc_unescape(dirpart, dupsource)) {
1091 tell_user(stderr, "%s: multiple-level wildcards unsupported",
1101 * Now we have dirpart (unescaped, ie a valid remote
1102 * path), and wildcard (a wildcard). This will be
1103 * sufficient to arrange a dirstack entry.
1105 scp_sftp_remotepath = dirpart;
1106 scp_sftp_wildcard = wildcard;
1109 scp_sftp_remotepath = newsource;
1110 scp_sftp_wildcard = NULL;
1112 scp_sftp_preserve = preserve;
1113 scp_sftp_recursive = recursive;
1114 scp_sftp_donethistarget = 0;
1115 scp_sftp_dirstack_head = NULL;
1120 int scp_sink_init(void)
1123 back->send(backhandle, "", 1);
1128 #define SCP_SINK_FILE 1
1129 #define SCP_SINK_DIR 2
1130 #define SCP_SINK_ENDDIR 3
1131 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1132 struct scp_sink_action {
1133 int action; /* FILE, DIR, ENDDIR */
1134 char *buf; /* will need freeing after use */
1135 char *name; /* filename or dirname (not ENDDIR) */
1136 int mode; /* access mode (not ENDDIR) */
1137 uint64 size; /* file size (not ENDDIR) */
1138 int settime; /* 1 if atime and mtime are filled */
1139 unsigned long atime, mtime; /* access times for the file */
1142 int scp_get_sink_action(struct scp_sink_action *act)
1146 int must_free_fname;
1147 struct fxp_attrs attrs;
1148 struct sftp_packet *pktin;
1149 struct sftp_request *req, *rreq;
1152 if (!scp_sftp_dirstack_head) {
1153 if (!scp_sftp_donethistarget) {
1155 * Simple case: we are only dealing with one file.
1157 fname = scp_sftp_remotepath;
1158 must_free_fname = 0;
1159 scp_sftp_donethistarget = 1;
1162 * Even simpler case: one file _which we've done_.
1163 * Return 1 (finished).
1169 * We're now in the middle of stepping through a list
1170 * of names returned from fxp_readdir(); so let's carry
1173 struct scp_sftp_dirstack *head = scp_sftp_dirstack_head;
1174 while (head->namepos < head->namelen &&
1175 (is_dots(head->names[head->namepos].filename) ||
1177 !wc_match(head->wildcard,
1178 head->names[head->namepos].filename))))
1179 head->namepos++; /* skip . and .. */
1180 if (head->namepos < head->namelen) {
1181 head->matched_something = 1;
1182 fname = dupcat(head->dirpath, "/",
1183 head->names[head->namepos++].filename,
1185 must_free_fname = 1;
1188 * We've come to the end of the list; pop it off
1189 * the stack and return an ENDDIR action (or RETRY
1190 * if this was a wildcard match).
1192 if (head->wildcard) {
1193 act->action = SCP_SINK_RETRY;
1194 if (!head->matched_something) {
1195 tell_user(stderr, "pscp: wildcard '%s' matched "
1196 "no files", head->wildcard);
1199 sfree(head->wildcard);
1202 act->action = SCP_SINK_ENDDIR;
1205 sfree(head->dirpath);
1207 scp_sftp_dirstack_head = head->next;
1215 * Now we have a filename. Stat it, and see if it's a file
1218 sftp_register(req = fxp_stat_send(fname));
1219 rreq = sftp_find_request(pktin = sftp_recv());
1220 assert(rreq == req);
1221 ret = fxp_stat_recv(pktin, rreq, &attrs);
1223 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) {
1224 tell_user(stderr, "unable to identify %s: %s", fname,
1225 ret ? "file type not supplied" : fxp_error());
1230 if (attrs.permissions & 0040000) {
1231 struct scp_sftp_dirstack *newitem;
1232 struct fxp_handle *dirhandle;
1233 int nnames, namesize;
1234 struct fxp_name *ournames;
1235 struct fxp_names *names;
1238 * It's a directory. If we're not in recursive mode,
1239 * this merits a complaint (which is fatal if the name
1240 * was specified directly, but not if it was matched by
1243 * We skip this complaint completely if
1244 * scp_sftp_wildcard is set, because that's an
1245 * indication that we're not actually supposed to
1246 * _recursively_ transfer the dir, just scan it for
1247 * things matching the wildcard.
1249 if (!scp_sftp_recursive && !scp_sftp_wildcard) {
1250 tell_user(stderr, "pscp: %s: is a directory", fname);
1252 if (must_free_fname) sfree(fname);
1253 if (scp_sftp_dirstack_head) {
1254 act->action = SCP_SINK_RETRY;
1262 * Otherwise, the fun begins. We must fxp_opendir() the
1263 * directory, slurp the filenames into memory, return
1264 * SCP_SINK_DIR (unless this is a wildcard match), and
1265 * set targetisdir. The next time we're called, we will
1266 * run through the list of filenames one by one,
1267 * matching them against a wildcard if present.
1269 * If targetisdir is _already_ set (meaning we're
1270 * already in the middle of going through another such
1271 * list), we must push the other (target,namelist) pair
1274 sftp_register(req = fxp_opendir_send(fname));
1275 rreq = sftp_find_request(pktin = sftp_recv());
1276 assert(rreq == req);
1277 dirhandle = fxp_opendir_recv(pktin, rreq);
1280 tell_user(stderr, "scp: unable to open directory %s: %s",
1281 fname, fxp_error());
1282 if (must_free_fname) sfree(fname);
1286 nnames = namesize = 0;
1291 sftp_register(req = fxp_readdir_send(dirhandle));
1292 rreq = sftp_find_request(pktin = sftp_recv());
1293 assert(rreq == req);
1294 names = fxp_readdir_recv(pktin, rreq);
1296 if (names == NULL) {
1297 if (fxp_error_type() == SSH_FX_EOF)
1299 tell_user(stderr, "scp: reading directory %s: %s\n",
1300 fname, fxp_error());
1301 if (must_free_fname) sfree(fname);
1306 if (names->nnames == 0) {
1307 fxp_free_names(names);
1310 if (nnames + names->nnames >= namesize) {
1311 namesize += names->nnames + 128;
1312 ournames = sresize(ournames, namesize, struct fxp_name);
1314 for (i = 0; i < names->nnames; i++) {
1315 if (!strcmp(names->names[i].filename, ".") ||
1316 !strcmp(names->names[i].filename, "..")) {
1318 * . and .. are normal consequences of
1319 * reading a directory, and aren't worth
1320 * complaining about.
1322 } else if (!vet_filename(names->names[i].filename)) {
1323 tell_user(stderr, "ignoring potentially dangerous server-"
1324 "supplied filename '%s'\n",
1325 names->names[i].filename);
1327 ournames[nnames++] = names->names[i];
1329 names->nnames = 0; /* prevent free_names */
1330 fxp_free_names(names);
1332 sftp_register(req = fxp_close_send(dirhandle));
1333 rreq = sftp_find_request(pktin = sftp_recv());
1334 assert(rreq == req);
1335 fxp_close_recv(pktin, rreq);
1337 newitem = snew(struct scp_sftp_dirstack);
1338 newitem->next = scp_sftp_dirstack_head;
1339 newitem->names = ournames;
1340 newitem->namepos = 0;
1341 newitem->namelen = nnames;
1342 if (must_free_fname)
1343 newitem->dirpath = fname;
1345 newitem->dirpath = dupstr(fname);
1346 if (scp_sftp_wildcard) {
1347 newitem->wildcard = scp_sftp_wildcard;
1348 newitem->matched_something = 0;
1349 scp_sftp_wildcard = NULL;
1351 newitem->wildcard = NULL;
1353 scp_sftp_dirstack_head = newitem;
1355 if (newitem->wildcard) {
1356 act->action = SCP_SINK_RETRY;
1358 act->action = SCP_SINK_DIR;
1359 act->buf = dupstr(stripslashes(fname, 0));
1360 act->name = act->buf;
1361 act->size = uint64_make(0,0); /* duhh, it's a directory */
1362 act->mode = 07777 & attrs.permissions;
1363 if (scp_sftp_preserve &&
1364 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1365 act->atime = attrs.atime;
1366 act->mtime = attrs.mtime;
1375 * It's a file. Return SCP_SINK_FILE.
1377 act->action = SCP_SINK_FILE;
1378 act->buf = dupstr(stripslashes(fname, 0));
1379 act->name = act->buf;
1380 if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) {
1381 act->size = attrs.size;
1383 act->size = uint64_make(ULONG_MAX,ULONG_MAX); /* no idea */
1384 act->mode = 07777 & attrs.permissions;
1385 if (scp_sftp_preserve &&
1386 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1387 act->atime = attrs.atime;
1388 act->mtime = attrs.mtime;
1392 if (must_free_fname)
1393 scp_sftp_currentname = fname;
1395 scp_sftp_currentname = dupstr(fname);
1410 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1413 bump("Protocol error: Unexpected newline");
1417 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1418 bump("Lost connection");
1421 act->buf = sresize(act->buf, bufsize, char);
1424 } while (ch != '\n');
1425 act->buf[i - 1] = '\0';
1427 case '\01': /* error */
1428 tell_user(stderr, "%s\n", act->buf);
1430 continue; /* go round again */
1431 case '\02': /* fatal error */
1432 bump("%s", act->buf);
1434 back->send(backhandle, "", 1);
1435 act->action = SCP_SINK_ENDDIR;
1438 if (sscanf(act->buf, "%ld %*d %ld %*d",
1439 &act->mtime, &act->atime) == 2) {
1441 back->send(backhandle, "", 1);
1442 continue; /* go round again */
1444 bump("Protocol error: Illegal time format");
1447 act->action = (action == 'C' ? SCP_SINK_FILE : SCP_SINK_DIR);
1450 bump("Protocol error: Expected control record");
1453 * We will go round this loop only once, unless we hit
1460 * If we get here, we must have seen SCP_SINK_FILE or
1466 if (sscanf(act->buf, "%o %s %n", &act->mode, sizestr, &i) != 2)
1467 bump("Protocol error: Illegal file descriptor format");
1468 act->size = uint64_from_decimal(sizestr);
1469 act->name = act->buf + i;
1475 int scp_accept_filexfer(void)
1478 struct sftp_packet *pktin;
1479 struct sftp_request *req, *rreq;
1481 sftp_register(req = fxp_open_send(scp_sftp_currentname, SSH_FXF_READ));
1482 rreq = sftp_find_request(pktin = sftp_recv());
1483 assert(rreq == req);
1484 scp_sftp_filehandle = fxp_open_recv(pktin, rreq);
1486 if (!scp_sftp_filehandle) {
1487 tell_user(stderr, "pscp: unable to open %s: %s",
1488 scp_sftp_currentname, fxp_error());
1492 scp_sftp_fileoffset = uint64_make(0, 0);
1493 scp_sftp_xfer = xfer_download_init(scp_sftp_filehandle,
1494 scp_sftp_fileoffset);
1495 sfree(scp_sftp_currentname);
1498 back->send(backhandle, "", 1);
1499 return 0; /* can't fail */
1503 int scp_recv_filedata(char *data, int len)
1506 struct sftp_packet *pktin;
1510 xfer_download_queue(scp_sftp_xfer);
1511 pktin = sftp_recv();
1512 ret = xfer_download_gotpkt(scp_sftp_xfer, pktin);
1515 tell_user(stderr, "pscp: error while reading: %s", fxp_error());
1520 if (xfer_download_data(scp_sftp_xfer, &vbuf, &actuallen)) {
1522 * This assertion relies on the fact that the natural
1523 * block size used in the xfer manager is at most that
1524 * used in this module. I don't like crossing layers in
1525 * this way, but it'll do for now.
1527 assert(actuallen <= len);
1528 memcpy(data, vbuf, actuallen);
1533 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, actuallen);
1537 return ssh_scp_recv((unsigned char *) data, len);
1541 int scp_finish_filerecv(void)
1544 struct sftp_packet *pktin;
1545 struct sftp_request *req, *rreq;
1548 * Ensure that xfer_done() will work correctly, so we can
1549 * clean up any outstanding requests from the file
1552 xfer_set_error(scp_sftp_xfer);
1553 while (!xfer_done(scp_sftp_xfer)) {
1557 pktin = sftp_recv();
1558 xfer_download_gotpkt(scp_sftp_xfer, pktin);
1559 if (xfer_download_data(scp_sftp_xfer, &vbuf, &len))
1562 xfer_cleanup(scp_sftp_xfer);
1564 sftp_register(req = fxp_close_send(scp_sftp_filehandle));
1565 rreq = sftp_find_request(pktin = sftp_recv());
1566 assert(rreq == req);
1567 fxp_close_recv(pktin, rreq);
1570 back->send(backhandle, "", 1);
1575 /* ----------------------------------------------------------------------
1576 * Send an error message to the other side and to the screen.
1577 * Increment error counter.
1579 static void run_err(const char *fmt, ...)
1585 str = dupvprintf(fmt, ap);
1586 str2 = dupcat("scp: ", str, "\n", NULL);
1588 scp_send_errmsg(str2);
1589 tell_user(stderr, "%s", str2);
1595 * Execute the source part of the SCP protocol.
1597 static void source(char *src)
1600 unsigned long mtime, atime;
1606 time_t stat_starttime, stat_lasttime;
1608 attr = file_type(src);
1609 if (attr == FILE_TYPE_NONEXISTENT ||
1610 attr == FILE_TYPE_WEIRD) {
1611 run_err("%s: %s file or directory", src,
1612 (attr == FILE_TYPE_WEIRD ? "Not a" : "No such"));
1616 if (attr == FILE_TYPE_DIRECTORY) {
1619 * Avoid . and .. directories.
1622 p = strrchr(src, '/');
1624 p = strrchr(src, '\\');
1629 if (!strcmp(p, ".") || !strcmp(p, ".."))
1630 /* skip . and .. */ ;
1634 run_err("%s: not a regular file", src);
1639 if ((last = strrchr(src, '/')) == NULL)
1643 if (strrchr(last, '\\') != NULL)
1644 last = strrchr(last, '\\') + 1;
1645 if (last == src && strchr(src, ':') != NULL)
1646 last = strchr(src, ':') + 1;
1648 f = open_existing_file(src, &size, &mtime, &atime);
1650 run_err("%s: Cannot open file", src);
1654 if (scp_send_filetimes(mtime, atime))
1660 uint64_decimal(size, sizestr);
1661 tell_user(stderr, "Sending file %s, size=%s", last, sizestr);
1663 if (scp_send_filename(last, size, 0644))
1666 stat_bytes = uint64_make(0,0);
1667 stat_starttime = time(NULL);
1670 for (i = uint64_make(0,0);
1671 uint64_compare(i,size) < 0;
1672 i = uint64_add32(i,4096)) {
1673 char transbuf[4096];
1676 if (uint64_compare(uint64_add32(i, k),size) > 0) /* i + k > size */
1677 k = (uint64_subtract(size, i)).lo; /* k = size - i; */
1678 if ((j = read_from_file(f, transbuf, k)) != k) {
1681 bump("%s: Read error", src);
1683 if (scp_send_filedata(transbuf, k))
1684 bump("%s: Network error occurred", src);
1687 stat_bytes = uint64_add32(stat_bytes, k);
1688 if (time(NULL) != stat_lasttime ||
1689 (uint64_compare(uint64_add32(i, k), size) == 0)) {
1690 stat_lasttime = time(NULL);
1691 print_stats(last, size, stat_bytes,
1692 stat_starttime, stat_lasttime);
1699 (void) scp_send_finish();
1703 * Recursively send the contents of a directory.
1705 static void rsource(char *src)
1711 if ((last = strrchr(src, '/')) == NULL)
1715 if (strrchr(last, '\\') != NULL)
1716 last = strrchr(last, '\\') + 1;
1717 if (last == src && strchr(src, ':') != NULL)
1718 last = strchr(src, ':') + 1;
1720 /* maybe send filetime */
1722 save_target = scp_save_remotepath();
1725 tell_user(stderr, "Entering directory: %s", last);
1726 if (scp_send_dirname(last, 0755))
1729 dir = open_directory(src);
1732 while ((filename = read_filename(dir)) != NULL) {
1733 char *foundfile = dupcat(src, "/", filename, NULL);
1739 close_directory(dir);
1741 (void) scp_send_enddir();
1743 scp_restore_remotepath(save_target);
1747 * Execute the sink part of the SCP protocol.
1749 static void sink(char *targ, char *src)
1759 time_t stat_starttime, stat_lasttime;
1762 attr = file_type(targ);
1763 if (attr == FILE_TYPE_DIRECTORY)
1766 if (targetshouldbedirectory && !targisdir)
1767 bump("%s: Not a directory", targ);
1771 struct scp_sink_action act;
1772 if (scp_get_sink_action(&act))
1775 if (act.action == SCP_SINK_ENDDIR)
1778 if (act.action == SCP_SINK_RETRY)
1783 * Prevent the remote side from maliciously writing to
1784 * files outside the target area by sending a filename
1785 * containing `../'. In fact, it shouldn't be sending
1786 * filenames with any slashes or colons in at all; so
1787 * we'll find the last slash, backslash or colon in the
1788 * filename and use only the part after that. (And
1791 * In addition, we also ensure here that if we're
1792 * copying a single file and the target is a directory
1793 * (common usage: `pscp host:filename .') the remote
1794 * can't send us a _different_ file name. We can
1795 * distinguish this case because `src' will be non-NULL
1796 * and the last component of that will fail to match
1797 * (the last component of) the name sent.
1799 * Well, not always; if `src' is a wildcard, we do
1800 * expect to get back filenames that don't correspond
1801 * exactly to it. Ideally in this case, we would like
1802 * to ensure that the returned filename actually
1803 * matches the wildcard pattern - but one of SCP's
1804 * protocol infelicities is that wildcard matching is
1805 * done at the server end _by the server's rules_ and
1806 * so in general this is infeasible. Hence, we only
1807 * accept filenames that don't correspond to `src' if
1808 * unsafe mode is enabled or we are using SFTP (which
1809 * resolves remote wildcards on the client side and can
1812 char *striptarget, *stripsrc;
1814 striptarget = stripslashes(act.name, 1);
1815 if (striptarget != act.name) {
1816 tell_user(stderr, "warning: remote host sent a compound"
1817 " pathname '%s'", act.name);
1818 tell_user(stderr, " renaming local file to '%s'",
1823 * Also check to see if the target filename is '.' or
1824 * '..', or indeed '...' and so on because Windows
1825 * appears to interpret those like '..'.
1827 if (is_dots(striptarget)) {
1828 bump("security violation: remote host attempted to write to"
1829 " a '.' or '..' path!");
1833 stripsrc = stripslashes(src, 1);
1834 if (strcmp(striptarget, stripsrc) &&
1835 !using_sftp && !scp_unsafe_mode) {
1836 tell_user(stderr, "warning: remote host tried to write "
1837 "to a file called '%s'", striptarget);
1838 tell_user(stderr, " when we requested a file "
1839 "called '%s'.", stripsrc);
1840 tell_user(stderr, " If this is a wildcard, "
1841 "consider upgrading to SSH-2 or using");
1842 tell_user(stderr, " the '-unsafe' option. Renaming"
1843 " of this file has been disallowed.");
1844 /* Override the name the server provided with our own. */
1845 striptarget = stripsrc;
1849 if (targ[0] != '\0')
1850 destfname = dir_file_cat(targ, striptarget);
1852 destfname = dupstr(striptarget);
1855 * In this branch of the if, the target area is a
1856 * single file with an explicitly specified name in any
1857 * case, so there's no danger.
1859 destfname = dupstr(targ);
1861 attr = file_type(destfname);
1862 exists = (attr != FILE_TYPE_NONEXISTENT);
1864 if (act.action == SCP_SINK_DIR) {
1865 if (exists && attr != FILE_TYPE_DIRECTORY) {
1866 run_err("%s: Not a directory", destfname);
1870 if (!create_directory(destfname)) {
1871 run_err("%s: Cannot create directory", destfname);
1875 sink(destfname, NULL);
1876 /* can we set the timestamp for directories ? */
1880 f = open_new_file(destfname);
1882 run_err("%s: Cannot create file", destfname);
1886 if (scp_accept_filexfer())
1889 stat_bytes = uint64_make(0, 0);
1890 stat_starttime = time(NULL);
1892 stat_name = stripslashes(destfname, 1);
1894 received = uint64_make(0, 0);
1895 while (uint64_compare(received,act.size) < 0) {
1896 char transbuf[32768];
1899 blksize = uint64_make(0, 32768);
1900 if (uint64_compare(blksize,uint64_subtract(act.size,received)) > 0)
1901 blksize = uint64_subtract(act.size,received);
1902 read = scp_recv_filedata(transbuf, (int)blksize.lo);
1904 bump("Lost connection");
1907 if (write_to_file(f, transbuf, read) != (int)read) {
1909 /* FIXME: in sftp we can actually abort the transfer */
1911 printf("\r%-25.25s | %50s\n",
1913 "Write error.. waiting for end of file");
1917 stat_bytes = uint64_add32(stat_bytes,read);
1918 if (time(NULL) > stat_lasttime ||
1919 uint64_compare(uint64_add32(received, read), act.size) == 0) {
1920 stat_lasttime = time(NULL);
1921 print_stats(stat_name, act.size, stat_bytes,
1922 stat_starttime, stat_lasttime);
1925 received = uint64_add32(received, read);
1928 set_file_times(f, act.mtime, act.atime);
1933 run_err("%s: Write error", destfname);
1936 (void) scp_finish_filerecv();
1943 * We will copy local files to a remote server.
1945 static void toremote(int argc, char *argv[])
1947 char *src, *targ, *host, *user;
1951 targ = argv[argc - 1];
1953 /* Separate host from filename */
1957 bump("targ == NULL in toremote()");
1961 /* Substitute "." for empty target */
1963 /* Separate host and username */
1965 host = strrchr(host, '@');
1976 if (colon(argv[0]) != NULL)
1977 bump("%s: Remote to remote not supported", argv[0]);
1979 wc_type = test_wildcard(argv[0], 1);
1980 if (wc_type == WCTYPE_NONEXISTENT)
1981 bump("%s: No such file or directory\n", argv[0]);
1982 else if (wc_type == WCTYPE_WILDCARD)
1983 targetshouldbedirectory = 1;
1986 cmd = dupprintf("scp%s%s%s%s -t %s",
1987 verbose ? " -v" : "",
1988 recursive ? " -r" : "",
1989 preserve ? " -p" : "",
1990 targetshouldbedirectory ? " -d" : "", targ);
1991 do_cmd(host, user, cmd);
1994 if (scp_source_setup(targ, targetshouldbedirectory))
1997 for (i = 0; i < argc - 1; i++) {
1999 if (colon(src) != NULL) {
2000 tell_user(stderr, "%s: Remote to remote not supported\n", src);
2005 wc_type = test_wildcard(src, 1);
2006 if (wc_type == WCTYPE_NONEXISTENT) {
2007 run_err("%s: No such file or directory", src);
2009 } else if (wc_type == WCTYPE_FILENAME) {
2013 WildcardMatcher *wc;
2016 wc = begin_wildcard_matching(src);
2018 run_err("%s: No such file or directory", src);
2022 while ((filename = wildcard_get_filename(wc)) != NULL) {
2027 finish_wildcard_matching(wc);
2033 * We will copy files from a remote server to the local machine.
2035 static void tolocal(int argc, char *argv[])
2037 char *src, *targ, *host, *user;
2041 bump("More than one remote source not supported");
2046 /* Separate host from filename */
2050 bump("Local to local copy not supported");
2054 /* Substitute "." for empty filename */
2056 /* Separate username and hostname */
2058 host = strrchr(host, '@');
2068 cmd = dupprintf("scp%s%s%s%s -f %s",
2069 verbose ? " -v" : "",
2070 recursive ? " -r" : "",
2071 preserve ? " -p" : "",
2072 targetshouldbedirectory ? " -d" : "", src);
2073 do_cmd(host, user, cmd);
2076 if (scp_sink_setup(src, preserve, recursive))
2083 * We will issue a list command to get a remote directory.
2085 static void get_dir_list(int argc, char *argv[])
2087 char *src, *host, *user;
2093 /* Separate host from filename */
2097 bump("Local file listing not supported");
2101 /* Substitute "." for empty filename */
2103 /* Separate username and hostname */
2105 host = strrchr(host, '@');
2115 cmd = snewn(4 * strlen(src) + 100, char);
2116 strcpy(cmd, "ls -la '");
2117 p = cmd + strlen(cmd);
2118 for (q = src; *q; q++) {
2131 do_cmd(host, user, cmd);
2135 scp_sftp_listdir(src);
2137 while (ssh_scp_recv((unsigned char *) &c, 1) > 0)
2138 tell_char(stdout, c);
2143 * Short description of parameters.
2145 static void usage(void)
2147 printf("PuTTY Secure Copy client\n");
2148 printf("%s\n", ver);
2149 printf("Usage: pscp [options] [user@]host:source target\n");
2151 (" pscp [options] source [source...] [user@]host:target\n");
2152 printf(" pscp [options] -ls [user@]host:filespec\n");
2153 printf("Options:\n");
2154 printf(" -V print version information and exit\n");
2155 printf(" -pgpfp print PGP key fingerprints and exit\n");
2156 printf(" -p preserve file attributes\n");
2157 printf(" -q quiet, don't show statistics\n");
2158 printf(" -r copy directories recursively\n");
2159 printf(" -v show verbose messages\n");
2160 printf(" -load sessname Load settings from saved session\n");
2161 printf(" -P port connect to specified port\n");
2162 printf(" -l user connect with specified username\n");
2163 printf(" -pw passw login with specified password\n");
2164 printf(" -1 -2 force use of particular SSH protocol version\n");
2165 printf(" -4 -6 force use of IPv4 or IPv6\n");
2166 printf(" -C enable compression\n");
2167 printf(" -i key private key file for authentication\n");
2168 printf(" -noagent disable use of Pageant\n");
2169 printf(" -agent enable use of Pageant\n");
2170 printf(" -batch disable all interactive prompts\n");
2171 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2172 printf(" -sftp force use of SFTP protocol\n");
2173 printf(" -scp force use of SCP protocol\n");
2176 * -gui is an internal option, used by GUI front ends to get
2177 * pscp to pass progress reports back to them. It's not an
2178 * ordinary user-accessible option, so it shouldn't be part of
2179 * the command-line help. The only people who need to know
2180 * about it are programmers, and they can read the source.
2183 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2190 printf("pscp: %s\n", ver);
2194 void cmdline_error(char *p, ...)
2197 fprintf(stderr, "pscp: ");
2199 vfprintf(stderr, p, ap);
2201 fprintf(stderr, "\n try typing just \"pscp\" for help\n");
2206 * Main program. (Called `psftp_main' because it gets called from
2207 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2209 int psftp_main(int argc, char *argv[])
2213 default_protocol = PROT_TELNET;
2216 #ifdef FLAG_SYNCAGENT
2220 cmdline_tooltype = TOOLTYPE_FILETRANSFER;
2223 /* Load Default Settings before doing anything else. */
2224 do_defaults(NULL, &cfg);
2225 loaded_session = FALSE;
2227 for (i = 1; i < argc; i++) {
2229 if (argv[i][0] != '-')
2231 ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, &cfg);
2233 cmdline_error("option \"%s\" requires an argument", argv[i]);
2234 } else if (ret == 2) {
2235 i++; /* skip next argument */
2236 } else if (ret == 1) {
2237 /* We have our own verbosity in addition to `flags'. */
2238 if (flags & FLAG_VERBOSE)
2240 } else if (strcmp(argv[i], "-pgpfp") == 0) {
2243 } else if (strcmp(argv[i], "-r") == 0) {
2245 } else if (strcmp(argv[i], "-p") == 0) {
2247 } else if (strcmp(argv[i], "-q") == 0) {
2249 } else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-?") == 0) {
2251 } else if (strcmp(argv[i], "-V") == 0) {
2253 } else if (strcmp(argv[i], "-ls") == 0) {
2255 } else if (strcmp(argv[i], "-batch") == 0) {
2256 console_batch_mode = 1;
2257 } else if (strcmp(argv[i], "-unsafe") == 0) {
2258 scp_unsafe_mode = 1;
2259 } else if (strcmp(argv[i], "-sftp") == 0) {
2260 try_scp = 0; try_sftp = 1;
2261 } else if (strcmp(argv[i], "-scp") == 0) {
2262 try_scp = 1; try_sftp = 0;
2263 } else if (strcmp(argv[i], "--") == 0) {
2267 cmdline_error("unknown option \"%s\"", argv[i]);
2277 get_dir_list(argc, argv);
2284 targetshouldbedirectory = 1;
2286 if (colon(argv[argc - 1]) != NULL)
2287 toremote(argc, argv);
2289 tolocal(argc, argv);
2292 if (back != NULL && back->connected(backhandle)) {
2294 back->special(backhandle, TS_EOF);
2295 ssh_scp_recv((unsigned char *) &ch, 1);
2300 console_provide_logctx(NULL);
2301 back->free(backhandle);
2305 return (errs == 0 ? 0 : 1);