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;
44 static int uploading = 0;
47 static void *backhandle;
51 static void source(const char *src);
52 static void rsource(const char *src);
53 static void sink(const char *targ, const char *src);
55 const char *const appname = "PSCP";
58 * The maximum amount of queued data we accept before we stop and
59 * wait for the server to process some.
61 #define MAX_SCP_BUFSIZE 16384
63 void ldisc_echoedit_update(void *handle) { }
65 static void tell_char(FILE *stream, char c)
70 static void tell_str(FILE *stream, const char *str)
74 for (i = 0; i < strlen(str); ++i)
75 tell_char(stream, str[i]);
78 static void tell_user(FILE *stream, const char *fmt, ...)
83 str = dupvprintf(fmt, ap);
85 str2 = dupcat(str, "\n", NULL);
87 tell_str(stream, str2);
92 * Print an error message and perform a fatal exit.
94 void fatalbox(const char *fmt, ...)
99 str = dupvprintf(fmt, ap);
100 str2 = dupcat("Fatal: ", str, "\n", NULL);
103 tell_str(stderr, str2);
109 void modalfatalbox(const char *fmt, ...)
114 str = dupvprintf(fmt, ap);
115 str2 = dupcat("Fatal: ", str, "\n", NULL);
118 tell_str(stderr, str2);
124 void nonfatal(const char *fmt, ...)
129 str = dupvprintf(fmt, ap);
130 str2 = dupcat("Error: ", str, "\n", NULL);
133 tell_str(stderr, str2);
137 void connection_fatal(void *frontend, const char *fmt, ...)
142 str = dupvprintf(fmt, ap);
143 str2 = dupcat("Fatal: ", str, "\n", NULL);
146 tell_str(stderr, str2);
154 * In pscp, all agent requests should be synchronous, so this is a
157 void agent_schedule_callback(void (*callback)(void *, void *, int),
158 void *callback_ctx, void *data, int len)
160 assert(!"We shouldn't be here");
164 * Receive a block of data from the SSH link. Block until all data
167 * To do this, we repeatedly call the SSH protocol module, with our
168 * own trap in from_backend() to catch the data that comes back. We
169 * do this until we have enough data.
172 static unsigned char *outptr; /* where to put the data */
173 static unsigned outlen; /* how much data required */
174 static unsigned char *pending = NULL; /* any spare data */
175 static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */
176 int from_backend(void *frontend, int is_stderr, const char *data, int datalen)
178 unsigned char *p = (unsigned char *) data;
179 unsigned len = (unsigned) datalen;
182 * stderr data is just spouted to local stderr and otherwise
187 if (fwrite(data, 1, len, stderr) < len)
192 if ((outlen > 0) && (len > 0)) {
193 unsigned used = outlen;
196 memcpy(outptr, p, used);
204 if (pendsize < pendlen + len) {
205 pendsize = pendlen + len + 4096;
206 pending = sresize(pending, pendsize, unsigned char);
208 memcpy(pending + pendlen, p, len);
214 int from_backend_untrusted(void *frontend_handle, const char *data, int len)
217 * No "untrusted" output should get here (the way the code is
218 * currently, it's all diverted by FLAG_STDERR).
220 assert(!"Unexpected call to from_backend_untrusted()");
221 return 0; /* not reached */
223 int from_backend_eof(void *frontend)
226 * We usually expect to be the party deciding when to close the
227 * connection, so if we see EOF before we sent it ourselves, we
228 * should panic. The exception is if we're using old-style scp and
229 * downloading rather than uploading.
231 if ((using_sftp || uploading) && !sent_eof) {
232 connection_fatal(frontend,
233 "Received unexpected end-of-file from server");
237 static int ssh_scp_recv(unsigned char *buf, int len)
243 * See if the pending-input block contains some of what we
247 unsigned pendused = pendlen;
248 if (pendused > outlen)
250 memcpy(outptr, pending, pendused);
251 memmove(pending, pending + pendused, pendlen - pendused);
265 if (back->exitcode(backhandle) >= 0 || ssh_sftp_loop_iteration() < 0)
273 * Loop through the ssh connection and authentication process.
275 static void ssh_scp_init(void)
277 while (!back->sendok(backhandle)) {
278 if (back->exitcode(backhandle) >= 0) {
282 if (ssh_sftp_loop_iteration() < 0) {
288 /* Work out which backend we ended up using. */
289 if (!ssh_fallback_cmd(backhandle))
290 using_sftp = main_cmd_is_sftp;
292 using_sftp = fallback_cmd_is_sftp;
296 tell_user(stderr, "Using SFTP");
298 tell_user(stderr, "Using SCP1");
303 * Print an error message and exit after closing the SSH link.
305 static void bump(const char *fmt, ...)
310 str = dupvprintf(fmt, ap);
312 str2 = dupcat(str, "\n", NULL);
314 tell_str(stderr, str2);
318 if (back != NULL && back->connected(backhandle)) {
320 back->special(backhandle, TS_EOF);
322 ssh_scp_recv((unsigned char *) &ch, 1);
329 * Wait for the reply to a single SFTP request. Parallels the same
330 * function in psftp.c (but isn't centralised into sftp.c because the
331 * latter module handles SFTP only and shouldn't assume that SFTP is
332 * the only thing going on by calling connection_fatal).
334 struct sftp_packet *sftp_wait_for_reply(struct sftp_request *req)
336 struct sftp_packet *pktin;
337 struct sftp_request *rreq;
342 connection_fatal(NULL, "did not receive SFTP response packet "
344 rreq = sftp_find_request(pktin);
346 connection_fatal(NULL, "unable to understand SFTP response packet "
347 "from server: %s", fxp_error());
352 * Open an SSH connection to user@host and execute cmd.
354 static void do_cmd(char *host, char *user, char *cmd)
360 if (host == NULL || host[0] == '\0')
361 bump("Empty host name");
364 * Remove a colon suffix.
366 host[host_strcspn(host, ":")] = '\0';
369 * If we haven't loaded session details already (e.g., from -load),
370 * try looking for a session called "host".
372 if (!loaded_session) {
373 /* Try to load settings for `host' into a temporary config */
374 Conf *conf2 = conf_new();
375 conf_set_str(conf2, CONF_host, "");
376 do_defaults(host, conf2);
377 if (conf_get_str(conf2, CONF_host)[0] != '\0') {
378 /* Settings present and include hostname */
379 /* Re-load data into the real config. */
380 do_defaults(host, conf);
382 /* Session doesn't exist or mention a hostname. */
383 /* Use `host' as a bare hostname. */
384 conf_set_str(conf, CONF_host, host);
387 /* Patch in hostname `host' to session details. */
388 conf_set_str(conf, CONF_host, host);
392 * Force use of SSH. (If they got the protocol wrong we assume the
393 * port is useless too.)
395 if (conf_get_int(conf, CONF_protocol) != PROT_SSH) {
396 conf_set_int(conf, CONF_protocol, PROT_SSH);
397 conf_set_int(conf, CONF_port, 22);
401 * Enact command-line overrides.
403 cmdline_run_saved(conf);
406 * Muck about with the hostname in various ways.
409 char *hostbuf = dupstr(conf_get_str(conf, CONF_host));
410 char *host = hostbuf;
414 * Trim leading whitespace.
416 host += strspn(host, " \t");
419 * See if host is of the form user@host, and separate out
420 * the username if so.
422 if (host[0] != '\0') {
423 char *atsign = strrchr(host, '@');
426 conf_set_str(conf, CONF_username, host);
432 * Remove any remaining whitespace.
437 if (*q != ' ' && *q != '\t')
443 conf_set_str(conf, CONF_host, hostbuf);
448 if (user != NULL && user[0] != '\0') {
449 conf_set_str(conf, CONF_username, user);
450 } else if (conf_get_str(conf, CONF_username)[0] == '\0') {
451 user = get_username();
453 bump("Empty user name");
456 tell_user(stderr, "Guessing user name: %s", user);
457 conf_set_str(conf, CONF_username, user);
463 * Disable scary things which shouldn't be enabled for simple
464 * things like SCP and SFTP: agent forwarding, port forwarding,
467 conf_set_int(conf, CONF_x11_forward, 0);
468 conf_set_int(conf, CONF_agentfwd, 0);
469 conf_set_int(conf, CONF_ssh_simple, TRUE);
472 while ((key = conf_get_str_nthstrkey(conf, CONF_portfwd, 0)) != NULL)
473 conf_del_str_str(conf, CONF_portfwd, key);
477 * Set up main and possibly fallback command depending on
478 * options specified by user.
479 * Attempt to start the SFTP subsystem as a first choice,
480 * falling back to the provided scp command if that fails.
482 conf_set_str(conf, CONF_remote_cmd2, "");
484 /* First choice is SFTP subsystem. */
485 main_cmd_is_sftp = 1;
486 conf_set_str(conf, CONF_remote_cmd, "sftp");
487 conf_set_int(conf, CONF_ssh_subsys, TRUE);
489 /* Fallback is to use the provided scp command. */
490 fallback_cmd_is_sftp = 0;
491 conf_set_str(conf, CONF_remote_cmd2, cmd);
492 conf_set_int(conf, CONF_ssh_subsys2, FALSE);
494 /* Since we're not going to try SCP, we may as well try
495 * harder to find an SFTP server, since in the current
496 * implementation we have a spare slot. */
497 fallback_cmd_is_sftp = 1;
498 /* see psftp.c for full explanation of this kludge */
499 conf_set_str(conf, CONF_remote_cmd2,
500 "test -x /usr/lib/sftp-server &&"
501 " exec /usr/lib/sftp-server\n"
502 "test -x /usr/local/lib/sftp-server &&"
503 " exec /usr/local/lib/sftp-server\n"
505 conf_set_int(conf, CONF_ssh_subsys2, FALSE);
508 /* Don't try SFTP at all; just try the scp command. */
509 main_cmd_is_sftp = 0;
510 conf_set_str(conf, CONF_remote_cmd, cmd);
511 conf_set_int(conf, CONF_ssh_subsys, FALSE);
513 conf_set_int(conf, CONF_nopty, TRUE);
517 err = back->init(NULL, &backhandle, conf,
518 conf_get_str(conf, CONF_host),
519 conf_get_int(conf, CONF_port),
521 conf_get_int(conf, CONF_tcp_keepalives));
523 bump("ssh_init: %s", err);
524 logctx = log_init(NULL, conf);
525 back->provide_logctx(backhandle, logctx);
526 console_provide_logctx(logctx);
528 if (verbose && realhost != NULL && errs == 0)
529 tell_user(stderr, "Connected to %s", realhost);
534 * Update statistic information about current file.
536 static void print_stats(const char *name, uint64 size, uint64 done,
537 time_t start, time_t now)
548 elap = (unsigned long) difftime(now, start);
551 ratebs = (float) (uint64_to_double(done) / elap);
553 ratebs = (float) uint64_to_double(done);
556 eta = (unsigned long) (uint64_to_double(uint64_subtract(size, done)));
558 eta = (unsigned long)
559 ((uint64_to_double(uint64_subtract(size, done)) / ratebs));
562 etastr = dupprintf("%02ld:%02ld:%02ld",
563 eta / 3600, (eta % 3600) / 60, eta % 60);
565 donedbl = uint64_to_double(done);
566 sizedbl = uint64_to_double(size);
567 pct = (int) (100 * (donedbl * 1.0 / sizedbl));
571 /* divide by 1024 to provide kB */
572 uint64_decimal(uint64_shift_right(done, 10), donekb);
573 len = printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
575 donekb, ratebs / 1024.0, etastr, pct);
576 if (len < prev_stats_len)
577 printf("%*s", prev_stats_len - len, "");
578 prev_stats_len = len;
580 if (uint64_compare(done, size) == 0)
590 * Find a colon in str and return a pointer to the colon.
591 * This is used to separate hostname from filename.
593 static char *colon(char *str)
595 /* We ignore a leading colon, since the hostname cannot be
596 empty. We also ignore a colon as second character because
597 of filenames like f:myfile.txt. */
598 if (str[0] == '\0' || str[0] == ':' ||
599 (str[0] != '[' && str[1] == ':'))
601 str += host_strcspn(str, ":/\\");
609 * Determine whether a string is entirely composed of dots.
611 static int is_dots(char *str)
613 return str[strspn(str, ".")] == '\0';
617 * Wait for a response from the other side.
618 * Return 0 if ok, -1 if error.
620 static int response(void)
622 char ch, resp, rbuf[2048];
625 if (ssh_scp_recv((unsigned char *) &resp, 1) <= 0)
626 bump("Lost connection");
636 case 2: /* fatal error */
638 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
639 bump("Protocol error: Lost connection");
641 } while (p < sizeof(rbuf) && ch != '\n');
644 tell_user(stderr, "%s", rbuf);
652 int sftp_recvdata(char *buf, int len)
654 return ssh_scp_recv((unsigned char *) buf, len);
656 int sftp_senddata(char *buf, int len)
658 back->send(backhandle, buf, len);
662 /* ----------------------------------------------------------------------
663 * sftp-based replacement for the hacky `pscp -ls'.
665 static int sftp_ls_compare(const void *av, const void *bv)
667 const struct fxp_name *a = (const struct fxp_name *) av;
668 const struct fxp_name *b = (const struct fxp_name *) bv;
669 return strcmp(a->filename, b->filename);
671 void scp_sftp_listdir(const char *dirname)
673 struct fxp_handle *dirh;
674 struct fxp_names *names;
675 struct fxp_name *ournames;
676 struct sftp_packet *pktin;
677 struct sftp_request *req;
678 int nnames, namesize;
682 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
687 printf("Listing directory %s\n", dirname);
689 req = fxp_opendir_send(dirname);
690 pktin = sftp_wait_for_reply(req);
691 dirh = fxp_opendir_recv(pktin, req);
694 printf("Unable to open %s: %s\n", dirname, fxp_error());
696 nnames = namesize = 0;
701 req = fxp_readdir_send(dirh);
702 pktin = sftp_wait_for_reply(req);
703 names = fxp_readdir_recv(pktin, req);
706 if (fxp_error_type() == SSH_FX_EOF)
708 printf("Reading directory %s: %s\n", dirname, fxp_error());
711 if (names->nnames == 0) {
712 fxp_free_names(names);
716 if (nnames + names->nnames >= namesize) {
717 namesize += names->nnames + 128;
718 ournames = sresize(ournames, namesize, struct fxp_name);
721 for (i = 0; i < names->nnames; i++)
722 ournames[nnames++] = names->names[i];
723 names->nnames = 0; /* prevent free_names */
724 fxp_free_names(names);
726 req = fxp_close_send(dirh);
727 pktin = sftp_wait_for_reply(req);
728 fxp_close_recv(pktin, req);
731 * Now we have our filenames. Sort them by actual file
732 * name, and then output the longname parts.
735 qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare);
740 for (i = 0; i < nnames; i++)
741 printf("%s\n", ournames[i].longname);
747 /* ----------------------------------------------------------------------
748 * Helper routines that contain the actual SCP protocol elements,
749 * implemented both as SCP1 and SFTP.
752 static struct scp_sftp_dirstack {
753 struct scp_sftp_dirstack *next;
754 struct fxp_name *names;
755 int namepos, namelen;
758 int matched_something; /* wildcard match set was non-empty */
759 } *scp_sftp_dirstack_head;
760 static char *scp_sftp_remotepath, *scp_sftp_currentname;
761 static char *scp_sftp_wildcard;
762 static int scp_sftp_targetisdir, scp_sftp_donethistarget;
763 static int scp_sftp_preserve, scp_sftp_recursive;
764 static unsigned long scp_sftp_mtime, scp_sftp_atime;
765 static int scp_has_times;
766 static struct fxp_handle *scp_sftp_filehandle;
767 static struct fxp_xfer *scp_sftp_xfer;
768 static uint64 scp_sftp_fileoffset;
770 int scp_source_setup(const char *target, int shouldbedir)
774 * Find out whether the target filespec is in fact a
777 struct sftp_packet *pktin;
778 struct sftp_request *req;
779 struct fxp_attrs attrs;
783 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
788 req = fxp_stat_send(target);
789 pktin = sftp_wait_for_reply(req);
790 ret = fxp_stat_recv(pktin, req, &attrs);
792 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS))
793 scp_sftp_targetisdir = 0;
795 scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0;
797 if (shouldbedir && !scp_sftp_targetisdir) {
798 bump("pscp: remote filespec %s: not a directory\n", target);
801 scp_sftp_remotepath = dupstr(target);
810 int scp_send_errmsg(char *str)
813 /* do nothing; we never need to send our errors to the server */
815 back->send(backhandle, "\001", 1);/* scp protocol error prefix */
816 back->send(backhandle, str, strlen(str));
818 return 0; /* can't fail */
821 int scp_send_filetimes(unsigned long mtime, unsigned long atime)
824 scp_sftp_mtime = mtime;
825 scp_sftp_atime = atime;
830 sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime);
831 back->send(backhandle, buf, strlen(buf));
836 int scp_send_filename(const char *name, uint64 size, int permissions)
840 struct sftp_packet *pktin;
841 struct sftp_request *req;
842 struct fxp_attrs attrs;
844 if (scp_sftp_targetisdir) {
845 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
847 fullname = dupstr(scp_sftp_remotepath);
851 PUT_PERMISSIONS(attrs, permissions);
853 req = fxp_open_send(fullname,
854 SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC,
856 pktin = sftp_wait_for_reply(req);
857 scp_sftp_filehandle = fxp_open_recv(pktin, req);
859 if (!scp_sftp_filehandle) {
860 tell_user(stderr, "pscp: unable to open %s: %s",
861 fullname, fxp_error());
866 scp_sftp_fileoffset = uint64_make(0, 0);
867 scp_sftp_xfer = xfer_upload_init(scp_sftp_filehandle,
868 scp_sftp_fileoffset);
874 uint64_decimal(size, sizestr);
877 sprintf(buf, "C%04o %s ", (int)(permissions & 07777), sizestr);
878 back->send(backhandle, buf, strlen(buf));
879 back->send(backhandle, name, strlen(name));
880 back->send(backhandle, "\n", 1);
885 int scp_send_filedata(char *data, int len)
889 struct sftp_packet *pktin;
891 if (!scp_sftp_filehandle) {
895 while (!xfer_upload_ready(scp_sftp_xfer)) {
897 ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin);
899 tell_user(stderr, "error while writing: %s", fxp_error());
900 if (ret == INT_MIN) /* pktin not even freed */
907 xfer_upload_data(scp_sftp_xfer, data, len);
909 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, len);
912 int bufsize = back->send(backhandle, data, len);
915 * If the network transfer is backing up - that is, the
916 * remote site is not accepting data as fast as we can
917 * produce it - then we must loop on network events until
918 * we have space in the buffer again.
920 while (bufsize > MAX_SCP_BUFSIZE) {
921 if (ssh_sftp_loop_iteration() < 0)
923 bufsize = back->sendbuffer(backhandle);
930 int scp_send_finish(void)
933 struct fxp_attrs attrs;
934 struct sftp_packet *pktin;
935 struct sftp_request *req;
938 while (!xfer_done(scp_sftp_xfer)) {
940 ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin);
942 tell_user(stderr, "error while writing: %s", fxp_error());
943 if (ret == INT_MIN) /* pktin not even freed */
949 xfer_cleanup(scp_sftp_xfer);
951 if (!scp_sftp_filehandle) {
955 attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME;
956 attrs.atime = scp_sftp_atime;
957 attrs.mtime = scp_sftp_mtime;
958 req = fxp_fsetstat_send(scp_sftp_filehandle, attrs);
959 pktin = sftp_wait_for_reply(req);
960 ret = fxp_fsetstat_recv(pktin, req);
962 tell_user(stderr, "unable to set file times: %s", fxp_error());
966 req = fxp_close_send(scp_sftp_filehandle);
967 pktin = sftp_wait_for_reply(req);
968 fxp_close_recv(pktin, req);
972 back->send(backhandle, "", 1);
977 char *scp_save_remotepath(void)
980 return scp_sftp_remotepath;
985 void scp_restore_remotepath(char *data)
988 scp_sftp_remotepath = data;
991 int scp_send_dirname(const char *name, int modes)
996 struct fxp_attrs attrs;
997 struct sftp_packet *pktin;
998 struct sftp_request *req;
1001 if (scp_sftp_targetisdir) {
1002 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
1004 fullname = dupstr(scp_sftp_remotepath);
1008 * We don't worry about whether we managed to create the
1009 * directory, because if it exists already it's OK just to
1010 * use it. Instead, we will stat it afterwards, and if it
1011 * exists and is a directory we will assume we were either
1012 * successful or it didn't matter.
1014 req = fxp_mkdir_send(fullname);
1015 pktin = sftp_wait_for_reply(req);
1016 ret = fxp_mkdir_recv(pktin, req);
1021 err = "server reported no error";
1023 req = fxp_stat_send(fullname);
1024 pktin = sftp_wait_for_reply(req);
1025 ret = fxp_stat_recv(pktin, req, &attrs);
1027 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) ||
1028 !(attrs.permissions & 0040000)) {
1029 tell_user(stderr, "unable to create directory %s: %s",
1036 scp_sftp_remotepath = fullname;
1041 sprintf(buf, "D%04o 0 ", modes);
1042 back->send(backhandle, buf, strlen(buf));
1043 back->send(backhandle, name, strlen(name));
1044 back->send(backhandle, "\n", 1);
1049 int scp_send_enddir(void)
1052 sfree(scp_sftp_remotepath);
1055 back->send(backhandle, "E\n", 2);
1061 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1062 * That's bad. The difference is that scp_sink_setup is called once
1063 * right at the start, whereas scp_sink_init is called to
1064 * initialise every level of recursion in the protocol.
1066 int scp_sink_setup(const char *source, int preserve, int recursive)
1072 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
1077 * It's possible that the source string we've been given
1078 * contains a wildcard. If so, we must split the directory
1079 * away from the wildcard itself (throwing an error if any
1080 * wildcardness comes before the final slash) and arrange
1081 * things so that a dirstack entry will be set up.
1083 newsource = snewn(1+strlen(source), char);
1084 if (!wc_unescape(newsource, source)) {
1085 /* Yes, here we go; it's a wildcard. Bah. */
1086 char *dupsource, *lastpart, *dirpart, *wildcard;
1090 dupsource = dupstr(source);
1091 lastpart = stripslashes(dupsource, 0);
1092 wildcard = dupstr(lastpart);
1094 if (*dupsource && dupsource[1]) {
1096 * The remains of dupsource are at least two
1097 * characters long, meaning the pathname wasn't
1098 * empty or just `/'. Hence, we remove the trailing
1101 lastpart[-1] = '\0';
1102 } else if (!*dupsource) {
1104 * The remains of dupsource are _empty_ - the whole
1105 * pathname was a wildcard. Hence we need to
1106 * replace it with ".".
1109 dupsource = dupstr(".");
1113 * Now we have separated our string into dupsource (the
1114 * directory part) and wildcard. Both of these will
1115 * need freeing at some point. Next step is to remove
1116 * wildcard escapes from the directory part, throwing
1117 * an error if it contains a real wildcard.
1119 dirpart = snewn(1+strlen(dupsource), char);
1120 if (!wc_unescape(dirpart, dupsource)) {
1121 tell_user(stderr, "%s: multiple-level wildcards unsupported",
1131 * Now we have dirpart (unescaped, ie a valid remote
1132 * path), and wildcard (a wildcard). This will be
1133 * sufficient to arrange a dirstack entry.
1135 scp_sftp_remotepath = dirpart;
1136 scp_sftp_wildcard = wildcard;
1139 scp_sftp_remotepath = newsource;
1140 scp_sftp_wildcard = NULL;
1142 scp_sftp_preserve = preserve;
1143 scp_sftp_recursive = recursive;
1144 scp_sftp_donethistarget = 0;
1145 scp_sftp_dirstack_head = NULL;
1150 int scp_sink_init(void)
1153 back->send(backhandle, "", 1);
1158 #define SCP_SINK_FILE 1
1159 #define SCP_SINK_DIR 2
1160 #define SCP_SINK_ENDDIR 3
1161 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1162 struct scp_sink_action {
1163 int action; /* FILE, DIR, ENDDIR */
1164 char *buf; /* will need freeing after use */
1165 char *name; /* filename or dirname (not ENDDIR) */
1166 long permissions; /* access permissions (not ENDDIR) */
1167 uint64 size; /* file size (not ENDDIR) */
1168 int settime; /* 1 if atime and mtime are filled */
1169 unsigned long atime, mtime; /* access times for the file */
1172 int scp_get_sink_action(struct scp_sink_action *act)
1176 int must_free_fname;
1177 struct fxp_attrs attrs;
1178 struct sftp_packet *pktin;
1179 struct sftp_request *req;
1182 if (!scp_sftp_dirstack_head) {
1183 if (!scp_sftp_donethistarget) {
1185 * Simple case: we are only dealing with one file.
1187 fname = scp_sftp_remotepath;
1188 must_free_fname = 0;
1189 scp_sftp_donethistarget = 1;
1192 * Even simpler case: one file _which we've done_.
1193 * Return 1 (finished).
1199 * We're now in the middle of stepping through a list
1200 * of names returned from fxp_readdir(); so let's carry
1203 struct scp_sftp_dirstack *head = scp_sftp_dirstack_head;
1204 while (head->namepos < head->namelen &&
1205 (is_dots(head->names[head->namepos].filename) ||
1207 !wc_match(head->wildcard,
1208 head->names[head->namepos].filename))))
1209 head->namepos++; /* skip . and .. */
1210 if (head->namepos < head->namelen) {
1211 head->matched_something = 1;
1212 fname = dupcat(head->dirpath, "/",
1213 head->names[head->namepos++].filename,
1215 must_free_fname = 1;
1218 * We've come to the end of the list; pop it off
1219 * the stack and return an ENDDIR action (or RETRY
1220 * if this was a wildcard match).
1222 if (head->wildcard) {
1223 act->action = SCP_SINK_RETRY;
1224 if (!head->matched_something) {
1225 tell_user(stderr, "pscp: wildcard '%s' matched "
1226 "no files", head->wildcard);
1229 sfree(head->wildcard);
1232 act->action = SCP_SINK_ENDDIR;
1235 sfree(head->dirpath);
1237 scp_sftp_dirstack_head = head->next;
1245 * Now we have a filename. Stat it, and see if it's a file
1248 req = fxp_stat_send(fname);
1249 pktin = sftp_wait_for_reply(req);
1250 ret = fxp_stat_recv(pktin, req, &attrs);
1252 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) {
1253 tell_user(stderr, "unable to identify %s: %s", fname,
1254 ret ? "file type not supplied" : fxp_error());
1255 if (must_free_fname) sfree(fname);
1260 if (attrs.permissions & 0040000) {
1261 struct scp_sftp_dirstack *newitem;
1262 struct fxp_handle *dirhandle;
1263 int nnames, namesize;
1264 struct fxp_name *ournames;
1265 struct fxp_names *names;
1268 * It's a directory. If we're not in recursive mode,
1269 * this merits a complaint (which is fatal if the name
1270 * was specified directly, but not if it was matched by
1273 * We skip this complaint completely if
1274 * scp_sftp_wildcard is set, because that's an
1275 * indication that we're not actually supposed to
1276 * _recursively_ transfer the dir, just scan it for
1277 * things matching the wildcard.
1279 if (!scp_sftp_recursive && !scp_sftp_wildcard) {
1280 tell_user(stderr, "pscp: %s: is a directory", fname);
1282 if (must_free_fname) sfree(fname);
1283 if (scp_sftp_dirstack_head) {
1284 act->action = SCP_SINK_RETRY;
1292 * Otherwise, the fun begins. We must fxp_opendir() the
1293 * directory, slurp the filenames into memory, return
1294 * SCP_SINK_DIR (unless this is a wildcard match), and
1295 * set targetisdir. The next time we're called, we will
1296 * run through the list of filenames one by one,
1297 * matching them against a wildcard if present.
1299 * If targetisdir is _already_ set (meaning we're
1300 * already in the middle of going through another such
1301 * list), we must push the other (target,namelist) pair
1304 req = fxp_opendir_send(fname);
1305 pktin = sftp_wait_for_reply(req);
1306 dirhandle = fxp_opendir_recv(pktin, req);
1309 tell_user(stderr, "pscp: unable to open directory %s: %s",
1310 fname, fxp_error());
1311 if (must_free_fname) sfree(fname);
1315 nnames = namesize = 0;
1320 req = fxp_readdir_send(dirhandle);
1321 pktin = sftp_wait_for_reply(req);
1322 names = fxp_readdir_recv(pktin, req);
1324 if (names == NULL) {
1325 if (fxp_error_type() == SSH_FX_EOF)
1327 tell_user(stderr, "pscp: reading directory %s: %s",
1328 fname, fxp_error());
1330 req = fxp_close_send(dirhandle);
1331 pktin = sftp_wait_for_reply(req);
1332 fxp_close_recv(pktin, req);
1334 if (must_free_fname) sfree(fname);
1339 if (names->nnames == 0) {
1340 fxp_free_names(names);
1343 if (nnames + names->nnames >= namesize) {
1344 namesize += names->nnames + 128;
1345 ournames = sresize(ournames, namesize, struct fxp_name);
1347 for (i = 0; i < names->nnames; i++) {
1348 if (!strcmp(names->names[i].filename, ".") ||
1349 !strcmp(names->names[i].filename, "..")) {
1351 * . and .. are normal consequences of
1352 * reading a directory, and aren't worth
1353 * complaining about.
1355 } else if (!vet_filename(names->names[i].filename)) {
1356 tell_user(stderr, "ignoring potentially dangerous server-"
1357 "supplied filename '%s'",
1358 names->names[i].filename);
1360 ournames[nnames++] = names->names[i];
1362 names->nnames = 0; /* prevent free_names */
1363 fxp_free_names(names);
1365 req = fxp_close_send(dirhandle);
1366 pktin = sftp_wait_for_reply(req);
1367 fxp_close_recv(pktin, req);
1369 newitem = snew(struct scp_sftp_dirstack);
1370 newitem->next = scp_sftp_dirstack_head;
1371 newitem->names = ournames;
1372 newitem->namepos = 0;
1373 newitem->namelen = nnames;
1374 if (must_free_fname)
1375 newitem->dirpath = fname;
1377 newitem->dirpath = dupstr(fname);
1378 if (scp_sftp_wildcard) {
1379 newitem->wildcard = scp_sftp_wildcard;
1380 newitem->matched_something = 0;
1381 scp_sftp_wildcard = NULL;
1383 newitem->wildcard = NULL;
1385 scp_sftp_dirstack_head = newitem;
1387 if (newitem->wildcard) {
1388 act->action = SCP_SINK_RETRY;
1390 act->action = SCP_SINK_DIR;
1391 act->buf = dupstr(stripslashes(fname, 0));
1392 act->name = act->buf;
1393 act->size = uint64_make(0,0); /* duhh, it's a directory */
1394 act->permissions = 07777 & attrs.permissions;
1395 if (scp_sftp_preserve &&
1396 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1397 act->atime = attrs.atime;
1398 act->mtime = attrs.mtime;
1407 * It's a file. Return SCP_SINK_FILE.
1409 act->action = SCP_SINK_FILE;
1410 act->buf = dupstr(stripslashes(fname, 0));
1411 act->name = act->buf;
1412 if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) {
1413 act->size = attrs.size;
1415 act->size = uint64_make(ULONG_MAX,ULONG_MAX); /* no idea */
1416 act->permissions = 07777 & attrs.permissions;
1417 if (scp_sftp_preserve &&
1418 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1419 act->atime = attrs.atime;
1420 act->mtime = attrs.mtime;
1424 if (must_free_fname)
1425 scp_sftp_currentname = fname;
1427 scp_sftp_currentname = dupstr(fname);
1442 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1445 bump("Protocol error: Unexpected newline");
1449 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1450 bump("Lost connection");
1453 act->buf = sresize(act->buf, bufsize, char);
1456 } while (ch != '\n');
1457 act->buf[i - 1] = '\0';
1459 case '\01': /* error */
1460 tell_user(stderr, "%s", act->buf);
1462 continue; /* go round again */
1463 case '\02': /* fatal error */
1464 bump("%s", act->buf);
1466 back->send(backhandle, "", 1);
1467 act->action = SCP_SINK_ENDDIR;
1470 if (sscanf(act->buf, "%ld %*d %ld %*d",
1471 &act->mtime, &act->atime) == 2) {
1473 back->send(backhandle, "", 1);
1474 continue; /* go round again */
1476 bump("Protocol error: Illegal time format");
1479 act->action = (action == 'C' ? SCP_SINK_FILE : SCP_SINK_DIR);
1482 bump("Protocol error: Expected control record");
1485 * We will go round this loop only once, unless we hit
1492 * If we get here, we must have seen SCP_SINK_FILE or
1498 if (sscanf(act->buf, "%lo %s %n", &act->permissions,
1500 bump("Protocol error: Illegal file descriptor format");
1501 act->size = uint64_from_decimal(sizestr);
1502 act->name = act->buf + i;
1508 int scp_accept_filexfer(void)
1511 struct sftp_packet *pktin;
1512 struct sftp_request *req;
1514 req = fxp_open_send(scp_sftp_currentname, SSH_FXF_READ, NULL);
1515 pktin = sftp_wait_for_reply(req);
1516 scp_sftp_filehandle = fxp_open_recv(pktin, req);
1518 if (!scp_sftp_filehandle) {
1519 tell_user(stderr, "pscp: unable to open %s: %s",
1520 scp_sftp_currentname, fxp_error());
1524 scp_sftp_fileoffset = uint64_make(0, 0);
1525 scp_sftp_xfer = xfer_download_init(scp_sftp_filehandle,
1526 scp_sftp_fileoffset);
1527 sfree(scp_sftp_currentname);
1530 back->send(backhandle, "", 1);
1531 return 0; /* can't fail */
1535 int scp_recv_filedata(char *data, int len)
1538 struct sftp_packet *pktin;
1542 xfer_download_queue(scp_sftp_xfer);
1543 pktin = sftp_recv();
1544 ret = xfer_download_gotpkt(scp_sftp_xfer, pktin);
1546 tell_user(stderr, "pscp: error while reading: %s", fxp_error());
1547 if (ret == INT_MIN) /* pktin not even freed */
1553 if (xfer_download_data(scp_sftp_xfer, &vbuf, &actuallen)) {
1555 * This assertion relies on the fact that the natural
1556 * block size used in the xfer manager is at most that
1557 * used in this module. I don't like crossing layers in
1558 * this way, but it'll do for now.
1560 assert(actuallen <= len);
1561 memcpy(data, vbuf, actuallen);
1566 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, actuallen);
1570 return ssh_scp_recv((unsigned char *) data, len);
1574 int scp_finish_filerecv(void)
1577 struct sftp_packet *pktin;
1578 struct sftp_request *req;
1581 * Ensure that xfer_done() will work correctly, so we can
1582 * clean up any outstanding requests from the file
1585 xfer_set_error(scp_sftp_xfer);
1586 while (!xfer_done(scp_sftp_xfer)) {
1590 pktin = sftp_recv();
1591 ret = xfer_download_gotpkt(scp_sftp_xfer, pktin);
1593 tell_user(stderr, "pscp: error while reading: %s", fxp_error());
1594 if (ret == INT_MIN) /* pktin not even freed */
1599 if (xfer_download_data(scp_sftp_xfer, &vbuf, &len))
1602 xfer_cleanup(scp_sftp_xfer);
1604 req = fxp_close_send(scp_sftp_filehandle);
1605 pktin = sftp_wait_for_reply(req);
1606 fxp_close_recv(pktin, req);
1609 back->send(backhandle, "", 1);
1614 /* ----------------------------------------------------------------------
1615 * Send an error message to the other side and to the screen.
1616 * Increment error counter.
1618 static void run_err(const char *fmt, ...)
1624 str = dupvprintf(fmt, ap);
1625 str2 = dupcat("pscp: ", str, "\n", NULL);
1627 scp_send_errmsg(str2);
1628 tell_user(stderr, "%s", str2);
1634 * Execute the source part of the SCP protocol.
1636 static void source(const char *src)
1639 unsigned long mtime, atime;
1646 time_t stat_starttime, stat_lasttime;
1648 attr = file_type(src);
1649 if (attr == FILE_TYPE_NONEXISTENT ||
1650 attr == FILE_TYPE_WEIRD) {
1651 run_err("%s: %s file or directory", src,
1652 (attr == FILE_TYPE_WEIRD ? "Not a" : "No such"));
1656 if (attr == FILE_TYPE_DIRECTORY) {
1659 * Avoid . and .. directories.
1662 p = strrchr(src, '/');
1664 p = strrchr(src, '\\');
1669 if (!strcmp(p, ".") || !strcmp(p, ".."))
1670 /* skip . and .. */ ;
1674 run_err("%s: not a regular file", src);
1679 if ((last = strrchr(src, '/')) == NULL)
1683 if (strrchr(last, '\\') != NULL)
1684 last = strrchr(last, '\\') + 1;
1685 if (last == src && strchr(src, ':') != NULL)
1686 last = strchr(src, ':') + 1;
1688 f = open_existing_file(src, &size, &mtime, &atime, &permissions);
1690 run_err("%s: Cannot open file", src);
1694 if (scp_send_filetimes(mtime, atime)) {
1702 uint64_decimal(size, sizestr);
1703 tell_user(stderr, "Sending file %s, size=%s", last, sizestr);
1705 if (scp_send_filename(last, size, permissions)) {
1710 stat_bytes = uint64_make(0,0);
1711 stat_starttime = time(NULL);
1714 for (i = uint64_make(0,0);
1715 uint64_compare(i,size) < 0;
1716 i = uint64_add32(i,4096)) {
1717 char transbuf[4096];
1720 if (uint64_compare(uint64_add32(i, k),size) > 0) /* i + k > size */
1721 k = (uint64_subtract(size, i)).lo; /* k = size - i; */
1722 if ((j = read_from_file(f, transbuf, k)) != k) {
1725 bump("%s: Read error", src);
1727 if (scp_send_filedata(transbuf, k))
1728 bump("%s: Network error occurred", src);
1731 stat_bytes = uint64_add32(stat_bytes, k);
1732 if (time(NULL) != stat_lasttime ||
1733 (uint64_compare(uint64_add32(i, k), size) == 0)) {
1734 stat_lasttime = time(NULL);
1735 print_stats(last, size, stat_bytes,
1736 stat_starttime, stat_lasttime);
1743 (void) scp_send_finish();
1747 * Recursively send the contents of a directory.
1749 static void rsource(const char *src)
1755 if ((last = strrchr(src, '/')) == NULL)
1759 if (strrchr(last, '\\') != NULL)
1760 last = strrchr(last, '\\') + 1;
1761 if (last == src && strchr(src, ':') != NULL)
1762 last = strchr(src, ':') + 1;
1764 /* maybe send filetime */
1766 save_target = scp_save_remotepath();
1769 tell_user(stderr, "Entering directory: %s", last);
1770 if (scp_send_dirname(last, 0755))
1773 dir = open_directory(src);
1776 while ((filename = read_filename(dir)) != NULL) {
1777 char *foundfile = dupcat(src, "/", filename, NULL);
1783 close_directory(dir);
1785 (void) scp_send_enddir();
1787 scp_restore_remotepath(save_target);
1791 * Execute the sink part of the SCP protocol.
1793 static void sink(const char *targ, const char *src)
1803 time_t stat_starttime, stat_lasttime;
1806 attr = file_type(targ);
1807 if (attr == FILE_TYPE_DIRECTORY)
1810 if (targetshouldbedirectory && !targisdir)
1811 bump("%s: Not a directory", targ);
1815 struct scp_sink_action act;
1816 if (scp_get_sink_action(&act))
1819 if (act.action == SCP_SINK_ENDDIR)
1822 if (act.action == SCP_SINK_RETRY)
1827 * Prevent the remote side from maliciously writing to
1828 * files outside the target area by sending a filename
1829 * containing `../'. In fact, it shouldn't be sending
1830 * filenames with any slashes or colons in at all; so
1831 * we'll find the last slash, backslash or colon in the
1832 * filename and use only the part after that. (And
1835 * In addition, we also ensure here that if we're
1836 * copying a single file and the target is a directory
1837 * (common usage: `pscp host:filename .') the remote
1838 * can't send us a _different_ file name. We can
1839 * distinguish this case because `src' will be non-NULL
1840 * and the last component of that will fail to match
1841 * (the last component of) the name sent.
1843 * Well, not always; if `src' is a wildcard, we do
1844 * expect to get back filenames that don't correspond
1845 * exactly to it. Ideally in this case, we would like
1846 * to ensure that the returned filename actually
1847 * matches the wildcard pattern - but one of SCP's
1848 * protocol infelicities is that wildcard matching is
1849 * done at the server end _by the server's rules_ and
1850 * so in general this is infeasible. Hence, we only
1851 * accept filenames that don't correspond to `src' if
1852 * unsafe mode is enabled or we are using SFTP (which
1853 * resolves remote wildcards on the client side and can
1856 char *striptarget, *stripsrc;
1858 striptarget = stripslashes(act.name, 1);
1859 if (striptarget != act.name) {
1860 tell_user(stderr, "warning: remote host sent a compound"
1861 " pathname '%s'", act.name);
1862 tell_user(stderr, " renaming local file to '%s'",
1867 * Also check to see if the target filename is '.' or
1868 * '..', or indeed '...' and so on because Windows
1869 * appears to interpret those like '..'.
1871 if (is_dots(striptarget)) {
1872 bump("security violation: remote host attempted to write to"
1873 " a '.' or '..' path!");
1877 stripsrc = stripslashes(src, 1);
1878 if (strcmp(striptarget, stripsrc) &&
1879 !using_sftp && !scp_unsafe_mode) {
1880 tell_user(stderr, "warning: remote host tried to write "
1881 "to a file called '%s'", striptarget);
1882 tell_user(stderr, " when we requested a file "
1883 "called '%s'.", stripsrc);
1884 tell_user(stderr, " If this is a wildcard, "
1885 "consider upgrading to SSH-2 or using");
1886 tell_user(stderr, " the '-unsafe' option. Renaming"
1887 " of this file has been disallowed.");
1888 /* Override the name the server provided with our own. */
1889 striptarget = stripsrc;
1893 if (targ[0] != '\0')
1894 destfname = dir_file_cat(targ, striptarget);
1896 destfname = dupstr(striptarget);
1899 * In this branch of the if, the target area is a
1900 * single file with an explicitly specified name in any
1901 * case, so there's no danger.
1903 destfname = dupstr(targ);
1905 attr = file_type(destfname);
1906 exists = (attr != FILE_TYPE_NONEXISTENT);
1908 if (act.action == SCP_SINK_DIR) {
1909 if (exists && attr != FILE_TYPE_DIRECTORY) {
1910 run_err("%s: Not a directory", destfname);
1915 if (!create_directory(destfname)) {
1916 run_err("%s: Cannot create directory", destfname);
1921 sink(destfname, NULL);
1922 /* can we set the timestamp for directories ? */
1927 f = open_new_file(destfname, act.permissions);
1929 run_err("%s: Cannot create file", destfname);
1934 if (scp_accept_filexfer()) {
1940 stat_bytes = uint64_make(0, 0);
1941 stat_starttime = time(NULL);
1943 stat_name = stripslashes(destfname, 1);
1945 received = uint64_make(0, 0);
1946 while (uint64_compare(received,act.size) < 0) {
1947 char transbuf[32768];
1950 blksize = uint64_make(0, 32768);
1951 if (uint64_compare(blksize,uint64_subtract(act.size,received)) > 0)
1952 blksize = uint64_subtract(act.size,received);
1953 read = scp_recv_filedata(transbuf, (int)blksize.lo);
1955 bump("Lost connection");
1958 if (write_to_file(f, transbuf, read) != (int)read) {
1960 /* FIXME: in sftp we can actually abort the transfer */
1962 printf("\r%-25.25s | %50s\n",
1964 "Write error.. waiting for end of file");
1968 stat_bytes = uint64_add32(stat_bytes,read);
1969 if (time(NULL) > stat_lasttime ||
1970 uint64_compare(uint64_add32(received, read), act.size) == 0) {
1971 stat_lasttime = time(NULL);
1972 print_stats(stat_name, act.size, stat_bytes,
1973 stat_starttime, stat_lasttime);
1976 received = uint64_add32(received, read);
1979 set_file_times(f, act.mtime, act.atime);
1984 run_err("%s: Write error", destfname);
1988 (void) scp_finish_filerecv();
1995 * We will copy local files to a remote server.
1997 static void toremote(int argc, char *argv[])
1999 char *src, *wtarg, *host, *user;
2006 wtarg = argv[argc - 1];
2008 /* Separate host from filename */
2010 wtarg = colon(wtarg);
2012 bump("wtarg == NULL in toremote()");
2014 /* Substitute "." for empty target */
2020 /* Separate host and username */
2022 host = strrchr(host, '@');
2033 if (colon(argv[0]) != NULL)
2034 bump("%s: Remote to remote not supported", argv[0]);
2036 wc_type = test_wildcard(argv[0], 1);
2037 if (wc_type == WCTYPE_NONEXISTENT)
2038 bump("%s: No such file or directory\n", argv[0]);
2039 else if (wc_type == WCTYPE_WILDCARD)
2040 targetshouldbedirectory = 1;
2043 cmd = dupprintf("scp%s%s%s%s -t %s",
2044 verbose ? " -v" : "",
2045 recursive ? " -r" : "",
2046 preserve ? " -p" : "",
2047 targetshouldbedirectory ? " -d" : "", targ);
2048 do_cmd(host, user, cmd);
2051 if (scp_source_setup(targ, targetshouldbedirectory))
2054 for (i = 0; i < argc - 1; i++) {
2056 if (colon(src) != NULL) {
2057 tell_user(stderr, "%s: Remote to remote not supported\n", src);
2062 wc_type = test_wildcard(src, 1);
2063 if (wc_type == WCTYPE_NONEXISTENT) {
2064 run_err("%s: No such file or directory", src);
2066 } else if (wc_type == WCTYPE_FILENAME) {
2070 WildcardMatcher *wc;
2073 wc = begin_wildcard_matching(src);
2075 run_err("%s: No such file or directory", src);
2079 while ((filename = wildcard_get_filename(wc)) != NULL) {
2084 finish_wildcard_matching(wc);
2090 * We will copy files from a remote server to the local machine.
2092 static void tolocal(int argc, char *argv[])
2094 char *wsrc, *host, *user;
2095 const char *src, *targ;
2101 bump("More than one remote source not supported");
2106 /* Separate host from filename */
2110 bump("Local to local copy not supported");
2112 /* Substitute "." for empty filename */
2118 /* Separate username and hostname */
2120 host = strrchr(host, '@');
2130 cmd = dupprintf("scp%s%s%s%s -f %s",
2131 verbose ? " -v" : "",
2132 recursive ? " -r" : "",
2133 preserve ? " -p" : "",
2134 targetshouldbedirectory ? " -d" : "", src);
2135 do_cmd(host, user, cmd);
2138 if (scp_sink_setup(src, preserve, recursive))
2145 * We will issue a list command to get a remote directory.
2147 static void get_dir_list(int argc, char *argv[])
2149 char *wsrc, *host, *user;
2157 /* Separate host from filename */
2161 bump("Local file listing not supported");
2163 /* Substitute "." for empty filename */
2169 /* Separate username and hostname */
2171 host = strrchr(host, '@');
2181 cmd = snewn(4 * strlen(src) + 100, char);
2182 strcpy(cmd, "ls -la '");
2183 p = cmd + strlen(cmd);
2184 for (q = src; *q; q++) {
2197 do_cmd(host, user, cmd);
2201 scp_sftp_listdir(src);
2203 while (ssh_scp_recv((unsigned char *) &c, 1) > 0)
2204 tell_char(stdout, c);
2209 * Short description of parameters.
2211 static void usage(void)
2213 printf("PuTTY Secure Copy client\n");
2214 printf("%s\n", ver);
2215 printf("Usage: pscp [options] [user@]host:source target\n");
2217 (" pscp [options] source [source...] [user@]host:target\n");
2218 printf(" pscp [options] -ls [user@]host:filespec\n");
2219 printf("Options:\n");
2220 printf(" -V print version information and exit\n");
2221 printf(" -pgpfp print PGP key fingerprints and exit\n");
2222 printf(" -p preserve file attributes\n");
2223 printf(" -q quiet, don't show statistics\n");
2224 printf(" -r copy directories recursively\n");
2225 printf(" -v show verbose messages\n");
2226 printf(" -load sessname Load settings from saved session\n");
2227 printf(" -P port connect to specified port\n");
2228 printf(" -l user connect with specified username\n");
2229 printf(" -pw passw login with specified password\n");
2230 printf(" -1 -2 force use of particular SSH protocol version\n");
2231 printf(" -4 -6 force use of IPv4 or IPv6\n");
2232 printf(" -C enable compression\n");
2233 printf(" -i key private key file for user authentication\n");
2234 printf(" -noagent disable use of Pageant\n");
2235 printf(" -agent enable use of Pageant\n");
2236 printf(" -hostkey aa:bb:cc:...\n");
2237 printf(" manually specify a host key (may be repeated)\n");
2238 printf(" -batch disable all interactive prompts\n");
2239 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2240 printf(" -sftp force use of SFTP protocol\n");
2241 printf(" -scp force use of SCP protocol\n");
2244 * -gui is an internal option, used by GUI front ends to get
2245 * pscp to pass progress reports back to them. It's not an
2246 * ordinary user-accessible option, so it shouldn't be part of
2247 * the command-line help. The only people who need to know
2248 * about it are programmers, and they can read the source.
2251 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2258 printf("pscp: %s\n", ver);
2262 void cmdline_error(const char *p, ...)
2265 fprintf(stderr, "pscp: ");
2267 vfprintf(stderr, p, ap);
2269 fprintf(stderr, "\n try typing just \"pscp\" for help\n");
2273 const int share_can_be_downstream = TRUE;
2274 const int share_can_be_upstream = FALSE;
2277 * Main program. (Called `psftp_main' because it gets called from
2278 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2280 int psftp_main(int argc, char *argv[])
2284 default_protocol = PROT_TELNET;
2287 #ifdef FLAG_SYNCAGENT
2291 cmdline_tooltype = TOOLTYPE_FILETRANSFER;
2294 /* Load Default Settings before doing anything else. */
2296 do_defaults(NULL, conf);
2297 loaded_session = FALSE;
2299 for (i = 1; i < argc; i++) {
2301 if (argv[i][0] != '-')
2303 ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, conf);
2305 cmdline_error("option \"%s\" requires an argument", argv[i]);
2306 } else if (ret == 2) {
2307 i++; /* skip next argument */
2308 } else if (ret == 1) {
2309 /* We have our own verbosity in addition to `flags'. */
2310 if (flags & FLAG_VERBOSE)
2312 } else if (strcmp(argv[i], "-pgpfp") == 0) {
2315 } else if (strcmp(argv[i], "-r") == 0) {
2317 } else if (strcmp(argv[i], "-p") == 0) {
2319 } else if (strcmp(argv[i], "-q") == 0) {
2321 } else if (strcmp(argv[i], "-h") == 0 ||
2322 strcmp(argv[i], "-?") == 0 ||
2323 strcmp(argv[i], "--help") == 0) {
2325 } else if (strcmp(argv[i], "-V") == 0 ||
2326 strcmp(argv[i], "--version") == 0) {
2328 } else if (strcmp(argv[i], "-ls") == 0) {
2330 } else if (strcmp(argv[i], "-batch") == 0) {
2331 console_batch_mode = 1;
2332 } else if (strcmp(argv[i], "-unsafe") == 0) {
2333 scp_unsafe_mode = 1;
2334 } else if (strcmp(argv[i], "-sftp") == 0) {
2335 try_scp = 0; try_sftp = 1;
2336 } else if (strcmp(argv[i], "-scp") == 0) {
2337 try_scp = 1; try_sftp = 0;
2338 } else if (strcmp(argv[i], "--") == 0) {
2342 cmdline_error("unknown option \"%s\"", argv[i]);
2352 get_dir_list(argc, argv);
2359 targetshouldbedirectory = 1;
2361 if (colon(argv[argc - 1]) != NULL)
2362 toremote(argc, argv);
2364 tolocal(argc, argv);
2367 if (back != NULL && back->connected(backhandle)) {
2369 back->special(backhandle, TS_EOF);
2371 ssh_scp_recv((unsigned char *) &ch, 1);
2376 console_provide_logctx(NULL);
2377 back->free(backhandle);
2381 return (errs == 0 ? 0 : 1);