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(char *src);
52 static void rsource(char *src);
53 static void sink(char *targ, 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_send(void *handle, char *buf, int len, int interactive)
66 * This is only here because of the calls to ldisc_send(NULL,
67 * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc
68 * as an ldisc. So if we get called with any real data, I want
74 static void tell_char(FILE * stream, char c)
79 static void tell_str(FILE * stream, char *str)
83 for (i = 0; i < strlen(str); ++i)
84 tell_char(stream, str[i]);
87 static void tell_user(FILE * stream, char *fmt, ...)
92 str = dupvprintf(fmt, ap);
94 str2 = dupcat(str, "\n", NULL);
96 tell_str(stream, str2);
101 * Print an error message and perform a fatal exit.
103 void fatalbox(char *fmt, ...)
108 str = dupvprintf(fmt, ap);
109 str2 = dupcat("Fatal: ", str, "\n", NULL);
112 tell_str(stderr, str2);
118 void modalfatalbox(char *fmt, ...)
123 str = dupvprintf(fmt, ap);
124 str2 = dupcat("Fatal: ", str, "\n", NULL);
127 tell_str(stderr, str2);
133 void nonfatal(char *fmt, ...)
138 str = dupvprintf(fmt, ap);
139 str2 = dupcat("Error: ", str, "\n", NULL);
142 tell_str(stderr, str2);
146 void connection_fatal(void *frontend, char *fmt, ...)
151 str = dupvprintf(fmt, ap);
152 str2 = dupcat("Fatal: ", str, "\n", NULL);
155 tell_str(stderr, str2);
163 * In pscp, all agent requests should be synchronous, so this is a
166 void agent_schedule_callback(void (*callback)(void *, void *, int),
167 void *callback_ctx, void *data, int len)
169 assert(!"We shouldn't be here");
173 * Receive a block of data from the SSH link. Block until all data
176 * To do this, we repeatedly call the SSH protocol module, with our
177 * own trap in from_backend() to catch the data that comes back. We
178 * do this until we have enough data.
181 static unsigned char *outptr; /* where to put the data */
182 static unsigned outlen; /* how much data required */
183 static unsigned char *pending = NULL; /* any spare data */
184 static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */
185 int from_backend(void *frontend, int is_stderr, const char *data, int datalen)
187 unsigned char *p = (unsigned char *) data;
188 unsigned len = (unsigned) datalen;
191 * stderr data is just spouted to local stderr and otherwise
196 if (fwrite(data, 1, len, stderr) < len)
201 if ((outlen > 0) && (len > 0)) {
202 unsigned used = outlen;
205 memcpy(outptr, p, used);
213 if (pendsize < pendlen + len) {
214 pendsize = pendlen + len + 4096;
215 pending = sresize(pending, pendsize, unsigned char);
217 memcpy(pending + pendlen, p, len);
223 int from_backend_untrusted(void *frontend_handle, const char *data, int len)
226 * No "untrusted" output should get here (the way the code is
227 * currently, it's all diverted by FLAG_STDERR).
229 assert(!"Unexpected call to from_backend_untrusted()");
230 return 0; /* not reached */
232 int from_backend_eof(void *frontend)
235 * We usually expect to be the party deciding when to close the
236 * connection, so if we see EOF before we sent it ourselves, we
237 * should panic. The exception is if we're using old-style scp and
238 * downloading rather than uploading.
240 if ((using_sftp || uploading) && !sent_eof) {
241 connection_fatal(frontend,
242 "Received unexpected end-of-file from server");
246 static int ssh_scp_recv(unsigned char *buf, int len)
252 * See if the pending-input block contains some of what we
256 unsigned pendused = pendlen;
257 if (pendused > outlen)
259 memcpy(outptr, pending, pendused);
260 memmove(pending, pending + pendused, pendlen - pendused);
274 if (back->exitcode(backhandle) >= 0 || ssh_sftp_loop_iteration() < 0)
282 * Loop through the ssh connection and authentication process.
284 static void ssh_scp_init(void)
286 while (!back->sendok(backhandle)) {
287 if (back->exitcode(backhandle) >= 0) {
291 if (ssh_sftp_loop_iteration() < 0) {
297 /* Work out which backend we ended up using. */
298 if (!ssh_fallback_cmd(backhandle))
299 using_sftp = main_cmd_is_sftp;
301 using_sftp = fallback_cmd_is_sftp;
305 tell_user(stderr, "Using SFTP");
307 tell_user(stderr, "Using SCP1");
312 * Print an error message and exit after closing the SSH link.
314 static void bump(char *fmt, ...)
319 str = dupvprintf(fmt, ap);
321 str2 = dupcat(str, "\n", NULL);
323 tell_str(stderr, str2);
327 if (back != NULL && back->connected(backhandle)) {
329 back->special(backhandle, TS_EOF);
331 ssh_scp_recv((unsigned char *) &ch, 1);
338 * Wait for the reply to a single SFTP request. Parallels the same
339 * function in psftp.c (but isn't centralised into sftp.c because the
340 * latter module handles SFTP only and shouldn't assume that SFTP is
341 * the only thing going on by calling connection_fatal).
343 struct sftp_packet *sftp_wait_for_reply(struct sftp_request *req)
345 struct sftp_packet *pktin;
346 struct sftp_request *rreq;
351 connection_fatal(NULL, "did not receive SFTP response packet "
353 rreq = sftp_find_request(pktin);
355 connection_fatal(NULL, "unable to understand SFTP response packet "
356 "from server: %s", fxp_error());
361 * Open an SSH connection to user@host and execute cmd.
363 static void do_cmd(char *host, char *user, char *cmd)
369 if (host == NULL || host[0] == '\0')
370 bump("Empty host name");
373 * Remove fiddly bits of address: remove a colon suffix, and
374 * the square brackets around an IPv6 literal address.
376 if (host[0] == '[') {
378 host[strcspn(host, "]")] = '\0';
380 host[strcspn(host, ":")] = '\0';
384 * If we haven't loaded session details already (e.g., from -load),
385 * try looking for a session called "host".
387 if (!loaded_session) {
388 /* Try to load settings for `host' into a temporary config */
389 Conf *conf2 = conf_new();
390 conf_set_str(conf2, CONF_host, "");
391 do_defaults(host, conf2);
392 if (conf_get_str(conf2, CONF_host)[0] != '\0') {
393 /* Settings present and include hostname */
394 /* Re-load data into the real config. */
395 do_defaults(host, conf);
397 /* Session doesn't exist or mention a hostname. */
398 /* Use `host' as a bare hostname. */
399 conf_set_str(conf, CONF_host, host);
402 /* Patch in hostname `host' to session details. */
403 conf_set_str(conf, CONF_host, host);
407 * Force use of SSH. (If they got the protocol wrong we assume the
408 * port is useless too.)
410 if (conf_get_int(conf, CONF_protocol) != PROT_SSH) {
411 conf_set_int(conf, CONF_protocol, PROT_SSH);
412 conf_set_int(conf, CONF_port, 22);
416 * Enact command-line overrides.
418 cmdline_run_saved(conf);
421 * Muck about with the hostname in various ways.
424 char *hostbuf = dupstr(conf_get_str(conf, CONF_host));
425 char *host = hostbuf;
429 * Trim leading whitespace.
431 host += strspn(host, " \t");
434 * See if host is of the form user@host, and separate out
435 * the username if so.
437 if (host[0] != '\0') {
438 char *atsign = strrchr(host, '@');
441 conf_set_str(conf, CONF_username, host);
447 * Remove any remaining whitespace.
452 if (*q != ' ' && *q != '\t')
458 conf_set_str(conf, CONF_host, hostbuf);
463 if (user != NULL && user[0] != '\0') {
464 conf_set_str(conf, CONF_username, user);
465 } else if (conf_get_str(conf, CONF_username)[0] == '\0') {
466 user = get_username();
468 bump("Empty user name");
471 tell_user(stderr, "Guessing user name: %s", user);
472 conf_set_str(conf, CONF_username, user);
478 * Disable scary things which shouldn't be enabled for simple
479 * things like SCP and SFTP: agent forwarding, port forwarding,
482 conf_set_int(conf, CONF_x11_forward, 0);
483 conf_set_int(conf, CONF_agentfwd, 0);
484 conf_set_int(conf, CONF_ssh_simple, TRUE);
487 while ((key = conf_get_str_nthstrkey(conf, CONF_portfwd, 0)) != NULL)
488 conf_del_str_str(conf, CONF_portfwd, key);
492 * Set up main and possibly fallback command depending on
493 * options specified by user.
494 * Attempt to start the SFTP subsystem as a first choice,
495 * falling back to the provided scp command if that fails.
497 conf_set_str(conf, CONF_remote_cmd2, "");
499 /* First choice is SFTP subsystem. */
500 main_cmd_is_sftp = 1;
501 conf_set_str(conf, CONF_remote_cmd, "sftp");
502 conf_set_int(conf, CONF_ssh_subsys, TRUE);
504 /* Fallback is to use the provided scp command. */
505 fallback_cmd_is_sftp = 0;
506 conf_set_str(conf, CONF_remote_cmd2, cmd);
507 conf_set_int(conf, CONF_ssh_subsys2, FALSE);
509 /* Since we're not going to try SCP, we may as well try
510 * harder to find an SFTP server, since in the current
511 * implementation we have a spare slot. */
512 fallback_cmd_is_sftp = 1;
513 /* see psftp.c for full explanation of this kludge */
514 conf_set_str(conf, CONF_remote_cmd2,
515 "test -x /usr/lib/sftp-server &&"
516 " exec /usr/lib/sftp-server\n"
517 "test -x /usr/local/lib/sftp-server &&"
518 " exec /usr/local/lib/sftp-server\n"
520 conf_set_int(conf, CONF_ssh_subsys2, FALSE);
523 /* Don't try SFTP at all; just try the scp command. */
524 main_cmd_is_sftp = 0;
525 conf_set_str(conf, CONF_remote_cmd, cmd);
526 conf_set_int(conf, CONF_ssh_subsys, FALSE);
528 conf_set_int(conf, CONF_nopty, TRUE);
532 err = back->init(NULL, &backhandle, conf,
533 conf_get_str(conf, CONF_host),
534 conf_get_int(conf, CONF_port),
536 conf_get_int(conf, CONF_tcp_keepalives));
538 bump("ssh_init: %s", err);
539 logctx = log_init(NULL, conf);
540 back->provide_logctx(backhandle, logctx);
541 console_provide_logctx(logctx);
543 if (verbose && realhost != NULL && errs == 0)
544 tell_user(stderr, "Connected to %s", realhost);
549 * Update statistic information about current file.
551 static void print_stats(char *name, uint64 size, uint64 done,
552 time_t start, time_t now)
563 elap = (unsigned long) difftime(now, start);
566 ratebs = (float) (uint64_to_double(done) / elap);
568 ratebs = (float) uint64_to_double(done);
571 eta = (unsigned long) (uint64_to_double(uint64_subtract(size, done)));
573 eta = (unsigned long)
574 ((uint64_to_double(uint64_subtract(size, done)) / ratebs));
577 etastr = dupprintf("%02ld:%02ld:%02ld",
578 eta / 3600, (eta % 3600) / 60, eta % 60);
580 donedbl = uint64_to_double(done);
581 sizedbl = uint64_to_double(size);
582 pct = (int) (100 * (donedbl * 1.0 / sizedbl));
586 /* divide by 1024 to provide kB */
587 uint64_decimal(uint64_shift_right(done, 10), donekb);
588 len = printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
590 donekb, ratebs / 1024.0, etastr, pct);
591 if (len < prev_stats_len)
592 printf("%*s", prev_stats_len - len, "");
593 prev_stats_len = len;
595 if (uint64_compare(done, size) == 0)
605 * Find a colon in str and return a pointer to the colon.
606 * This is used to separate hostname from filename.
608 static char *colon(char *str)
610 /* We ignore a leading colon, since the hostname cannot be
611 empty. We also ignore a colon as second character because
612 of filenames like f:myfile.txt. */
613 if (str[0] == '\0' || str[0] == ':' ||
614 (str[0] != '[' && str[1] == ':'))
616 while (*str != '\0' && *str != ':' && *str != '/' && *str != '\\') {
618 /* Skip over IPv6 literal addresses
619 * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */
620 char *ipv6_end = strchr(str, ']');
634 * Return a pointer to the portion of str that comes after the last
635 * slash (or backslash or colon, if `local' is TRUE).
637 static char *stripslashes(char *str, int local)
642 p = strchr(str, ':');
646 p = strrchr(str, '/');
650 p = strrchr(str, '\\');
658 * Determine whether a string is entirely composed of dots.
660 static int is_dots(char *str)
662 return str[strspn(str, ".")] == '\0';
666 * Wait for a response from the other side.
667 * Return 0 if ok, -1 if error.
669 static int response(void)
671 char ch, resp, rbuf[2048];
674 if (ssh_scp_recv((unsigned char *) &resp, 1) <= 0)
675 bump("Lost connection");
685 case 2: /* fatal error */
687 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
688 bump("Protocol error: Lost connection");
690 } while (p < sizeof(rbuf) && ch != '\n');
693 tell_user(stderr, "%s", rbuf);
701 int sftp_recvdata(char *buf, int len)
703 return ssh_scp_recv((unsigned char *) buf, len);
705 int sftp_senddata(char *buf, int len)
707 back->send(backhandle, buf, len);
711 /* ----------------------------------------------------------------------
712 * sftp-based replacement for the hacky `pscp -ls'.
714 static int sftp_ls_compare(const void *av, const void *bv)
716 const struct fxp_name *a = (const struct fxp_name *) av;
717 const struct fxp_name *b = (const struct fxp_name *) bv;
718 return strcmp(a->filename, b->filename);
720 void scp_sftp_listdir(char *dirname)
722 struct fxp_handle *dirh;
723 struct fxp_names *names;
724 struct fxp_name *ournames;
725 struct sftp_packet *pktin;
726 struct sftp_request *req;
727 int nnames, namesize;
731 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
736 printf("Listing directory %s\n", dirname);
738 req = fxp_opendir_send(dirname);
739 pktin = sftp_wait_for_reply(req);
740 dirh = fxp_opendir_recv(pktin, req);
743 printf("Unable to open %s: %s\n", dirname, fxp_error());
745 nnames = namesize = 0;
750 req = fxp_readdir_send(dirh);
751 pktin = sftp_wait_for_reply(req);
752 names = fxp_readdir_recv(pktin, req);
755 if (fxp_error_type() == SSH_FX_EOF)
757 printf("Reading directory %s: %s\n", dirname, fxp_error());
760 if (names->nnames == 0) {
761 fxp_free_names(names);
765 if (nnames + names->nnames >= namesize) {
766 namesize += names->nnames + 128;
767 ournames = sresize(ournames, namesize, struct fxp_name);
770 for (i = 0; i < names->nnames; i++)
771 ournames[nnames++] = names->names[i];
772 names->nnames = 0; /* prevent free_names */
773 fxp_free_names(names);
775 req = fxp_close_send(dirh);
776 pktin = sftp_wait_for_reply(req);
777 fxp_close_recv(pktin, req);
780 * Now we have our filenames. Sort them by actual file
781 * name, and then output the longname parts.
784 qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare);
789 for (i = 0; i < nnames; i++)
790 printf("%s\n", ournames[i].longname);
796 /* ----------------------------------------------------------------------
797 * Helper routines that contain the actual SCP protocol elements,
798 * implemented both as SCP1 and SFTP.
801 static struct scp_sftp_dirstack {
802 struct scp_sftp_dirstack *next;
803 struct fxp_name *names;
804 int namepos, namelen;
807 int matched_something; /* wildcard match set was non-empty */
808 } *scp_sftp_dirstack_head;
809 static char *scp_sftp_remotepath, *scp_sftp_currentname;
810 static char *scp_sftp_wildcard;
811 static int scp_sftp_targetisdir, scp_sftp_donethistarget;
812 static int scp_sftp_preserve, scp_sftp_recursive;
813 static unsigned long scp_sftp_mtime, scp_sftp_atime;
814 static int scp_has_times;
815 static struct fxp_handle *scp_sftp_filehandle;
816 static struct fxp_xfer *scp_sftp_xfer;
817 static uint64 scp_sftp_fileoffset;
819 int scp_source_setup(char *target, int shouldbedir)
823 * Find out whether the target filespec is in fact a
826 struct sftp_packet *pktin;
827 struct sftp_request *req;
828 struct fxp_attrs attrs;
832 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
837 req = fxp_stat_send(target);
838 pktin = sftp_wait_for_reply(req);
839 ret = fxp_stat_recv(pktin, req, &attrs);
841 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS))
842 scp_sftp_targetisdir = 0;
844 scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0;
846 if (shouldbedir && !scp_sftp_targetisdir) {
847 bump("pscp: remote filespec %s: not a directory\n", target);
850 scp_sftp_remotepath = dupstr(target);
859 int scp_send_errmsg(char *str)
862 /* do nothing; we never need to send our errors to the server */
864 back->send(backhandle, "\001", 1);/* scp protocol error prefix */
865 back->send(backhandle, str, strlen(str));
867 return 0; /* can't fail */
870 int scp_send_filetimes(unsigned long mtime, unsigned long atime)
873 scp_sftp_mtime = mtime;
874 scp_sftp_atime = atime;
879 sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime);
880 back->send(backhandle, buf, strlen(buf));
885 int scp_send_filename(char *name, uint64 size, int permissions)
889 struct sftp_packet *pktin;
890 struct sftp_request *req;
891 struct fxp_attrs attrs;
893 if (scp_sftp_targetisdir) {
894 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
896 fullname = dupstr(scp_sftp_remotepath);
900 PUT_PERMISSIONS(attrs, permissions);
902 req = fxp_open_send(fullname,
903 SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC,
905 pktin = sftp_wait_for_reply(req);
906 scp_sftp_filehandle = fxp_open_recv(pktin, req);
908 if (!scp_sftp_filehandle) {
909 tell_user(stderr, "pscp: unable to open %s: %s",
910 fullname, fxp_error());
915 scp_sftp_fileoffset = uint64_make(0, 0);
916 scp_sftp_xfer = xfer_upload_init(scp_sftp_filehandle,
917 scp_sftp_fileoffset);
923 uint64_decimal(size, sizestr);
926 sprintf(buf, "C%04o %s ", (int)(permissions & 07777), sizestr);
927 back->send(backhandle, buf, strlen(buf));
928 back->send(backhandle, name, strlen(name));
929 back->send(backhandle, "\n", 1);
934 int scp_send_filedata(char *data, int len)
938 struct sftp_packet *pktin;
940 if (!scp_sftp_filehandle) {
944 while (!xfer_upload_ready(scp_sftp_xfer)) {
946 ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin);
948 tell_user(stderr, "error while writing: %s", fxp_error());
949 if (ret == INT_MIN) /* pktin not even freed */
956 xfer_upload_data(scp_sftp_xfer, data, len);
958 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, len);
961 int bufsize = back->send(backhandle, data, len);
964 * If the network transfer is backing up - that is, the
965 * remote site is not accepting data as fast as we can
966 * produce it - then we must loop on network events until
967 * we have space in the buffer again.
969 while (bufsize > MAX_SCP_BUFSIZE) {
970 if (ssh_sftp_loop_iteration() < 0)
972 bufsize = back->sendbuffer(backhandle);
979 int scp_send_finish(void)
982 struct fxp_attrs attrs;
983 struct sftp_packet *pktin;
984 struct sftp_request *req;
987 while (!xfer_done(scp_sftp_xfer)) {
989 ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin);
991 tell_user(stderr, "error while writing: %s", fxp_error());
992 if (ret == INT_MIN) /* pktin not even freed */
998 xfer_cleanup(scp_sftp_xfer);
1000 if (!scp_sftp_filehandle) {
1003 if (scp_has_times) {
1004 attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME;
1005 attrs.atime = scp_sftp_atime;
1006 attrs.mtime = scp_sftp_mtime;
1007 req = fxp_fsetstat_send(scp_sftp_filehandle, attrs);
1008 pktin = sftp_wait_for_reply(req);
1009 ret = fxp_fsetstat_recv(pktin, req);
1011 tell_user(stderr, "unable to set file times: %s", fxp_error());
1015 req = fxp_close_send(scp_sftp_filehandle);
1016 pktin = sftp_wait_for_reply(req);
1017 fxp_close_recv(pktin, req);
1021 back->send(backhandle, "", 1);
1026 char *scp_save_remotepath(void)
1029 return scp_sftp_remotepath;
1034 void scp_restore_remotepath(char *data)
1037 scp_sftp_remotepath = data;
1040 int scp_send_dirname(char *name, int modes)
1045 struct fxp_attrs attrs;
1046 struct sftp_packet *pktin;
1047 struct sftp_request *req;
1050 if (scp_sftp_targetisdir) {
1051 fullname = dupcat(scp_sftp_remotepath, "/", name, NULL);
1053 fullname = dupstr(scp_sftp_remotepath);
1057 * We don't worry about whether we managed to create the
1058 * directory, because if it exists already it's OK just to
1059 * use it. Instead, we will stat it afterwards, and if it
1060 * exists and is a directory we will assume we were either
1061 * successful or it didn't matter.
1063 req = fxp_mkdir_send(fullname);
1064 pktin = sftp_wait_for_reply(req);
1065 ret = fxp_mkdir_recv(pktin, req);
1070 err = "server reported no error";
1072 req = fxp_stat_send(fullname);
1073 pktin = sftp_wait_for_reply(req);
1074 ret = fxp_stat_recv(pktin, req, &attrs);
1076 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) ||
1077 !(attrs.permissions & 0040000)) {
1078 tell_user(stderr, "unable to create directory %s: %s",
1085 scp_sftp_remotepath = fullname;
1090 sprintf(buf, "D%04o 0 ", modes);
1091 back->send(backhandle, buf, strlen(buf));
1092 back->send(backhandle, name, strlen(name));
1093 back->send(backhandle, "\n", 1);
1098 int scp_send_enddir(void)
1101 sfree(scp_sftp_remotepath);
1104 back->send(backhandle, "E\n", 2);
1110 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1111 * That's bad. The difference is that scp_sink_setup is called once
1112 * right at the start, whereas scp_sink_init is called to
1113 * initialise every level of recursion in the protocol.
1115 int scp_sink_setup(char *source, int preserve, int recursive)
1121 tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
1126 * It's possible that the source string we've been given
1127 * contains a wildcard. If so, we must split the directory
1128 * away from the wildcard itself (throwing an error if any
1129 * wildcardness comes before the final slash) and arrange
1130 * things so that a dirstack entry will be set up.
1132 newsource = snewn(1+strlen(source), char);
1133 if (!wc_unescape(newsource, source)) {
1134 /* Yes, here we go; it's a wildcard. Bah. */
1135 char *dupsource, *lastpart, *dirpart, *wildcard;
1139 dupsource = dupstr(source);
1140 lastpart = stripslashes(dupsource, 0);
1141 wildcard = dupstr(lastpart);
1143 if (*dupsource && dupsource[1]) {
1145 * The remains of dupsource are at least two
1146 * characters long, meaning the pathname wasn't
1147 * empty or just `/'. Hence, we remove the trailing
1150 lastpart[-1] = '\0';
1151 } else if (!*dupsource) {
1153 * The remains of dupsource are _empty_ - the whole
1154 * pathname was a wildcard. Hence we need to
1155 * replace it with ".".
1158 dupsource = dupstr(".");
1162 * Now we have separated our string into dupsource (the
1163 * directory part) and wildcard. Both of these will
1164 * need freeing at some point. Next step is to remove
1165 * wildcard escapes from the directory part, throwing
1166 * an error if it contains a real wildcard.
1168 dirpart = snewn(1+strlen(dupsource), char);
1169 if (!wc_unescape(dirpart, dupsource)) {
1170 tell_user(stderr, "%s: multiple-level wildcards unsupported",
1180 * Now we have dirpart (unescaped, ie a valid remote
1181 * path), and wildcard (a wildcard). This will be
1182 * sufficient to arrange a dirstack entry.
1184 scp_sftp_remotepath = dirpart;
1185 scp_sftp_wildcard = wildcard;
1188 scp_sftp_remotepath = newsource;
1189 scp_sftp_wildcard = NULL;
1191 scp_sftp_preserve = preserve;
1192 scp_sftp_recursive = recursive;
1193 scp_sftp_donethistarget = 0;
1194 scp_sftp_dirstack_head = NULL;
1199 int scp_sink_init(void)
1202 back->send(backhandle, "", 1);
1207 #define SCP_SINK_FILE 1
1208 #define SCP_SINK_DIR 2
1209 #define SCP_SINK_ENDDIR 3
1210 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1211 struct scp_sink_action {
1212 int action; /* FILE, DIR, ENDDIR */
1213 char *buf; /* will need freeing after use */
1214 char *name; /* filename or dirname (not ENDDIR) */
1215 long permissions; /* access permissions (not ENDDIR) */
1216 uint64 size; /* file size (not ENDDIR) */
1217 int settime; /* 1 if atime and mtime are filled */
1218 unsigned long atime, mtime; /* access times for the file */
1221 int scp_get_sink_action(struct scp_sink_action *act)
1225 int must_free_fname;
1226 struct fxp_attrs attrs;
1227 struct sftp_packet *pktin;
1228 struct sftp_request *req;
1231 if (!scp_sftp_dirstack_head) {
1232 if (!scp_sftp_donethistarget) {
1234 * Simple case: we are only dealing with one file.
1236 fname = scp_sftp_remotepath;
1237 must_free_fname = 0;
1238 scp_sftp_donethistarget = 1;
1241 * Even simpler case: one file _which we've done_.
1242 * Return 1 (finished).
1248 * We're now in the middle of stepping through a list
1249 * of names returned from fxp_readdir(); so let's carry
1252 struct scp_sftp_dirstack *head = scp_sftp_dirstack_head;
1253 while (head->namepos < head->namelen &&
1254 (is_dots(head->names[head->namepos].filename) ||
1256 !wc_match(head->wildcard,
1257 head->names[head->namepos].filename))))
1258 head->namepos++; /* skip . and .. */
1259 if (head->namepos < head->namelen) {
1260 head->matched_something = 1;
1261 fname = dupcat(head->dirpath, "/",
1262 head->names[head->namepos++].filename,
1264 must_free_fname = 1;
1267 * We've come to the end of the list; pop it off
1268 * the stack and return an ENDDIR action (or RETRY
1269 * if this was a wildcard match).
1271 if (head->wildcard) {
1272 act->action = SCP_SINK_RETRY;
1273 if (!head->matched_something) {
1274 tell_user(stderr, "pscp: wildcard '%s' matched "
1275 "no files", head->wildcard);
1278 sfree(head->wildcard);
1281 act->action = SCP_SINK_ENDDIR;
1284 sfree(head->dirpath);
1286 scp_sftp_dirstack_head = head->next;
1294 * Now we have a filename. Stat it, and see if it's a file
1297 req = fxp_stat_send(fname);
1298 pktin = sftp_wait_for_reply(req);
1299 ret = fxp_stat_recv(pktin, req, &attrs);
1301 if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) {
1302 tell_user(stderr, "unable to identify %s: %s", fname,
1303 ret ? "file type not supplied" : fxp_error());
1304 if (must_free_fname) sfree(fname);
1309 if (attrs.permissions & 0040000) {
1310 struct scp_sftp_dirstack *newitem;
1311 struct fxp_handle *dirhandle;
1312 int nnames, namesize;
1313 struct fxp_name *ournames;
1314 struct fxp_names *names;
1317 * It's a directory. If we're not in recursive mode,
1318 * this merits a complaint (which is fatal if the name
1319 * was specified directly, but not if it was matched by
1322 * We skip this complaint completely if
1323 * scp_sftp_wildcard is set, because that's an
1324 * indication that we're not actually supposed to
1325 * _recursively_ transfer the dir, just scan it for
1326 * things matching the wildcard.
1328 if (!scp_sftp_recursive && !scp_sftp_wildcard) {
1329 tell_user(stderr, "pscp: %s: is a directory", fname);
1331 if (must_free_fname) sfree(fname);
1332 if (scp_sftp_dirstack_head) {
1333 act->action = SCP_SINK_RETRY;
1341 * Otherwise, the fun begins. We must fxp_opendir() the
1342 * directory, slurp the filenames into memory, return
1343 * SCP_SINK_DIR (unless this is a wildcard match), and
1344 * set targetisdir. The next time we're called, we will
1345 * run through the list of filenames one by one,
1346 * matching them against a wildcard if present.
1348 * If targetisdir is _already_ set (meaning we're
1349 * already in the middle of going through another such
1350 * list), we must push the other (target,namelist) pair
1353 req = fxp_opendir_send(fname);
1354 pktin = sftp_wait_for_reply(req);
1355 dirhandle = fxp_opendir_recv(pktin, req);
1358 tell_user(stderr, "pscp: unable to open directory %s: %s",
1359 fname, fxp_error());
1360 if (must_free_fname) sfree(fname);
1364 nnames = namesize = 0;
1369 req = fxp_readdir_send(dirhandle);
1370 pktin = sftp_wait_for_reply(req);
1371 names = fxp_readdir_recv(pktin, req);
1373 if (names == NULL) {
1374 if (fxp_error_type() == SSH_FX_EOF)
1376 tell_user(stderr, "pscp: reading directory %s: %s",
1377 fname, fxp_error());
1379 req = fxp_close_send(dirhandle);
1380 pktin = sftp_wait_for_reply(req);
1381 fxp_close_recv(pktin, req);
1383 if (must_free_fname) sfree(fname);
1388 if (names->nnames == 0) {
1389 fxp_free_names(names);
1392 if (nnames + names->nnames >= namesize) {
1393 namesize += names->nnames + 128;
1394 ournames = sresize(ournames, namesize, struct fxp_name);
1396 for (i = 0; i < names->nnames; i++) {
1397 if (!strcmp(names->names[i].filename, ".") ||
1398 !strcmp(names->names[i].filename, "..")) {
1400 * . and .. are normal consequences of
1401 * reading a directory, and aren't worth
1402 * complaining about.
1404 } else if (!vet_filename(names->names[i].filename)) {
1405 tell_user(stderr, "ignoring potentially dangerous server-"
1406 "supplied filename '%s'",
1407 names->names[i].filename);
1409 ournames[nnames++] = names->names[i];
1411 names->nnames = 0; /* prevent free_names */
1412 fxp_free_names(names);
1414 req = fxp_close_send(dirhandle);
1415 pktin = sftp_wait_for_reply(req);
1416 fxp_close_recv(pktin, req);
1418 newitem = snew(struct scp_sftp_dirstack);
1419 newitem->next = scp_sftp_dirstack_head;
1420 newitem->names = ournames;
1421 newitem->namepos = 0;
1422 newitem->namelen = nnames;
1423 if (must_free_fname)
1424 newitem->dirpath = fname;
1426 newitem->dirpath = dupstr(fname);
1427 if (scp_sftp_wildcard) {
1428 newitem->wildcard = scp_sftp_wildcard;
1429 newitem->matched_something = 0;
1430 scp_sftp_wildcard = NULL;
1432 newitem->wildcard = NULL;
1434 scp_sftp_dirstack_head = newitem;
1436 if (newitem->wildcard) {
1437 act->action = SCP_SINK_RETRY;
1439 act->action = SCP_SINK_DIR;
1440 act->buf = dupstr(stripslashes(fname, 0));
1441 act->name = act->buf;
1442 act->size = uint64_make(0,0); /* duhh, it's a directory */
1443 act->permissions = 07777 & attrs.permissions;
1444 if (scp_sftp_preserve &&
1445 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1446 act->atime = attrs.atime;
1447 act->mtime = attrs.mtime;
1456 * It's a file. Return SCP_SINK_FILE.
1458 act->action = SCP_SINK_FILE;
1459 act->buf = dupstr(stripslashes(fname, 0));
1460 act->name = act->buf;
1461 if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) {
1462 act->size = attrs.size;
1464 act->size = uint64_make(ULONG_MAX,ULONG_MAX); /* no idea */
1465 act->permissions = 07777 & attrs.permissions;
1466 if (scp_sftp_preserve &&
1467 (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) {
1468 act->atime = attrs.atime;
1469 act->mtime = attrs.mtime;
1473 if (must_free_fname)
1474 scp_sftp_currentname = fname;
1476 scp_sftp_currentname = dupstr(fname);
1491 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1494 bump("Protocol error: Unexpected newline");
1498 if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0)
1499 bump("Lost connection");
1502 act->buf = sresize(act->buf, bufsize, char);
1505 } while (ch != '\n');
1506 act->buf[i - 1] = '\0';
1508 case '\01': /* error */
1509 tell_user(stderr, "%s", act->buf);
1511 continue; /* go round again */
1512 case '\02': /* fatal error */
1513 bump("%s", act->buf);
1515 back->send(backhandle, "", 1);
1516 act->action = SCP_SINK_ENDDIR;
1519 if (sscanf(act->buf, "%ld %*d %ld %*d",
1520 &act->mtime, &act->atime) == 2) {
1522 back->send(backhandle, "", 1);
1523 continue; /* go round again */
1525 bump("Protocol error: Illegal time format");
1528 act->action = (action == 'C' ? SCP_SINK_FILE : SCP_SINK_DIR);
1531 bump("Protocol error: Expected control record");
1534 * We will go round this loop only once, unless we hit
1541 * If we get here, we must have seen SCP_SINK_FILE or
1547 if (sscanf(act->buf, "%lo %s %n", &act->permissions,
1549 bump("Protocol error: Illegal file descriptor format");
1550 act->size = uint64_from_decimal(sizestr);
1551 act->name = act->buf + i;
1557 int scp_accept_filexfer(void)
1560 struct sftp_packet *pktin;
1561 struct sftp_request *req;
1563 req = fxp_open_send(scp_sftp_currentname, SSH_FXF_READ, NULL);
1564 pktin = sftp_wait_for_reply(req);
1565 scp_sftp_filehandle = fxp_open_recv(pktin, req);
1567 if (!scp_sftp_filehandle) {
1568 tell_user(stderr, "pscp: unable to open %s: %s",
1569 scp_sftp_currentname, fxp_error());
1573 scp_sftp_fileoffset = uint64_make(0, 0);
1574 scp_sftp_xfer = xfer_download_init(scp_sftp_filehandle,
1575 scp_sftp_fileoffset);
1576 sfree(scp_sftp_currentname);
1579 back->send(backhandle, "", 1);
1580 return 0; /* can't fail */
1584 int scp_recv_filedata(char *data, int len)
1587 struct sftp_packet *pktin;
1591 xfer_download_queue(scp_sftp_xfer);
1592 pktin = sftp_recv();
1593 ret = xfer_download_gotpkt(scp_sftp_xfer, pktin);
1595 tell_user(stderr, "pscp: error while reading: %s", fxp_error());
1596 if (ret == INT_MIN) /* pktin not even freed */
1602 if (xfer_download_data(scp_sftp_xfer, &vbuf, &actuallen)) {
1604 * This assertion relies on the fact that the natural
1605 * block size used in the xfer manager is at most that
1606 * used in this module. I don't like crossing layers in
1607 * this way, but it'll do for now.
1609 assert(actuallen <= len);
1610 memcpy(data, vbuf, actuallen);
1615 scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, actuallen);
1619 return ssh_scp_recv((unsigned char *) data, len);
1623 int scp_finish_filerecv(void)
1626 struct sftp_packet *pktin;
1627 struct sftp_request *req;
1630 * Ensure that xfer_done() will work correctly, so we can
1631 * clean up any outstanding requests from the file
1634 xfer_set_error(scp_sftp_xfer);
1635 while (!xfer_done(scp_sftp_xfer)) {
1639 pktin = sftp_recv();
1640 ret = xfer_download_gotpkt(scp_sftp_xfer, pktin);
1642 tell_user(stderr, "pscp: error while reading: %s", fxp_error());
1643 if (ret == INT_MIN) /* pktin not even freed */
1648 if (xfer_download_data(scp_sftp_xfer, &vbuf, &len))
1651 xfer_cleanup(scp_sftp_xfer);
1653 req = fxp_close_send(scp_sftp_filehandle);
1654 pktin = sftp_wait_for_reply(req);
1655 fxp_close_recv(pktin, req);
1658 back->send(backhandle, "", 1);
1663 /* ----------------------------------------------------------------------
1664 * Send an error message to the other side and to the screen.
1665 * Increment error counter.
1667 static void run_err(const char *fmt, ...)
1673 str = dupvprintf(fmt, ap);
1674 str2 = dupcat("pscp: ", str, "\n", NULL);
1676 scp_send_errmsg(str2);
1677 tell_user(stderr, "%s", str2);
1683 * Execute the source part of the SCP protocol.
1685 static void source(char *src)
1688 unsigned long mtime, atime;
1695 time_t stat_starttime, stat_lasttime;
1697 attr = file_type(src);
1698 if (attr == FILE_TYPE_NONEXISTENT ||
1699 attr == FILE_TYPE_WEIRD) {
1700 run_err("%s: %s file or directory", src,
1701 (attr == FILE_TYPE_WEIRD ? "Not a" : "No such"));
1705 if (attr == FILE_TYPE_DIRECTORY) {
1708 * Avoid . and .. directories.
1711 p = strrchr(src, '/');
1713 p = strrchr(src, '\\');
1718 if (!strcmp(p, ".") || !strcmp(p, ".."))
1719 /* skip . and .. */ ;
1723 run_err("%s: not a regular file", src);
1728 if ((last = strrchr(src, '/')) == NULL)
1732 if (strrchr(last, '\\') != NULL)
1733 last = strrchr(last, '\\') + 1;
1734 if (last == src && strchr(src, ':') != NULL)
1735 last = strchr(src, ':') + 1;
1737 f = open_existing_file(src, &size, &mtime, &atime, &permissions);
1739 run_err("%s: Cannot open file", src);
1743 if (scp_send_filetimes(mtime, atime)) {
1751 uint64_decimal(size, sizestr);
1752 tell_user(stderr, "Sending file %s, size=%s", last, sizestr);
1754 if (scp_send_filename(last, size, permissions)) {
1759 stat_bytes = uint64_make(0,0);
1760 stat_starttime = time(NULL);
1763 for (i = uint64_make(0,0);
1764 uint64_compare(i,size) < 0;
1765 i = uint64_add32(i,4096)) {
1766 char transbuf[4096];
1769 if (uint64_compare(uint64_add32(i, k),size) > 0) /* i + k > size */
1770 k = (uint64_subtract(size, i)).lo; /* k = size - i; */
1771 if ((j = read_from_file(f, transbuf, k)) != k) {
1774 bump("%s: Read error", src);
1776 if (scp_send_filedata(transbuf, k))
1777 bump("%s: Network error occurred", src);
1780 stat_bytes = uint64_add32(stat_bytes, k);
1781 if (time(NULL) != stat_lasttime ||
1782 (uint64_compare(uint64_add32(i, k), size) == 0)) {
1783 stat_lasttime = time(NULL);
1784 print_stats(last, size, stat_bytes,
1785 stat_starttime, stat_lasttime);
1792 (void) scp_send_finish();
1796 * Recursively send the contents of a directory.
1798 static void rsource(char *src)
1804 if ((last = strrchr(src, '/')) == NULL)
1808 if (strrchr(last, '\\') != NULL)
1809 last = strrchr(last, '\\') + 1;
1810 if (last == src && strchr(src, ':') != NULL)
1811 last = strchr(src, ':') + 1;
1813 /* maybe send filetime */
1815 save_target = scp_save_remotepath();
1818 tell_user(stderr, "Entering directory: %s", last);
1819 if (scp_send_dirname(last, 0755))
1822 dir = open_directory(src);
1825 while ((filename = read_filename(dir)) != NULL) {
1826 char *foundfile = dupcat(src, "/", filename, NULL);
1832 close_directory(dir);
1834 (void) scp_send_enddir();
1836 scp_restore_remotepath(save_target);
1840 * Execute the sink part of the SCP protocol.
1842 static void sink(char *targ, char *src)
1852 time_t stat_starttime, stat_lasttime;
1855 attr = file_type(targ);
1856 if (attr == FILE_TYPE_DIRECTORY)
1859 if (targetshouldbedirectory && !targisdir)
1860 bump("%s: Not a directory", targ);
1864 struct scp_sink_action act;
1865 if (scp_get_sink_action(&act))
1868 if (act.action == SCP_SINK_ENDDIR)
1871 if (act.action == SCP_SINK_RETRY)
1876 * Prevent the remote side from maliciously writing to
1877 * files outside the target area by sending a filename
1878 * containing `../'. In fact, it shouldn't be sending
1879 * filenames with any slashes or colons in at all; so
1880 * we'll find the last slash, backslash or colon in the
1881 * filename and use only the part after that. (And
1884 * In addition, we also ensure here that if we're
1885 * copying a single file and the target is a directory
1886 * (common usage: `pscp host:filename .') the remote
1887 * can't send us a _different_ file name. We can
1888 * distinguish this case because `src' will be non-NULL
1889 * and the last component of that will fail to match
1890 * (the last component of) the name sent.
1892 * Well, not always; if `src' is a wildcard, we do
1893 * expect to get back filenames that don't correspond
1894 * exactly to it. Ideally in this case, we would like
1895 * to ensure that the returned filename actually
1896 * matches the wildcard pattern - but one of SCP's
1897 * protocol infelicities is that wildcard matching is
1898 * done at the server end _by the server's rules_ and
1899 * so in general this is infeasible. Hence, we only
1900 * accept filenames that don't correspond to `src' if
1901 * unsafe mode is enabled or we are using SFTP (which
1902 * resolves remote wildcards on the client side and can
1905 char *striptarget, *stripsrc;
1907 striptarget = stripslashes(act.name, 1);
1908 if (striptarget != act.name) {
1909 tell_user(stderr, "warning: remote host sent a compound"
1910 " pathname '%s'", act.name);
1911 tell_user(stderr, " renaming local file to '%s'",
1916 * Also check to see if the target filename is '.' or
1917 * '..', or indeed '...' and so on because Windows
1918 * appears to interpret those like '..'.
1920 if (is_dots(striptarget)) {
1921 bump("security violation: remote host attempted to write to"
1922 " a '.' or '..' path!");
1926 stripsrc = stripslashes(src, 1);
1927 if (strcmp(striptarget, stripsrc) &&
1928 !using_sftp && !scp_unsafe_mode) {
1929 tell_user(stderr, "warning: remote host tried to write "
1930 "to a file called '%s'", striptarget);
1931 tell_user(stderr, " when we requested a file "
1932 "called '%s'.", stripsrc);
1933 tell_user(stderr, " If this is a wildcard, "
1934 "consider upgrading to SSH-2 or using");
1935 tell_user(stderr, " the '-unsafe' option. Renaming"
1936 " of this file has been disallowed.");
1937 /* Override the name the server provided with our own. */
1938 striptarget = stripsrc;
1942 if (targ[0] != '\0')
1943 destfname = dir_file_cat(targ, striptarget);
1945 destfname = dupstr(striptarget);
1948 * In this branch of the if, the target area is a
1949 * single file with an explicitly specified name in any
1950 * case, so there's no danger.
1952 destfname = dupstr(targ);
1954 attr = file_type(destfname);
1955 exists = (attr != FILE_TYPE_NONEXISTENT);
1957 if (act.action == SCP_SINK_DIR) {
1958 if (exists && attr != FILE_TYPE_DIRECTORY) {
1959 run_err("%s: Not a directory", destfname);
1964 if (!create_directory(destfname)) {
1965 run_err("%s: Cannot create directory", destfname);
1970 sink(destfname, NULL);
1971 /* can we set the timestamp for directories ? */
1976 f = open_new_file(destfname, act.permissions);
1978 run_err("%s: Cannot create file", destfname);
1983 if (scp_accept_filexfer()) {
1989 stat_bytes = uint64_make(0, 0);
1990 stat_starttime = time(NULL);
1992 stat_name = stripslashes(destfname, 1);
1994 received = uint64_make(0, 0);
1995 while (uint64_compare(received,act.size) < 0) {
1996 char transbuf[32768];
1999 blksize = uint64_make(0, 32768);
2000 if (uint64_compare(blksize,uint64_subtract(act.size,received)) > 0)
2001 blksize = uint64_subtract(act.size,received);
2002 read = scp_recv_filedata(transbuf, (int)blksize.lo);
2004 bump("Lost connection");
2007 if (write_to_file(f, transbuf, read) != (int)read) {
2009 /* FIXME: in sftp we can actually abort the transfer */
2011 printf("\r%-25.25s | %50s\n",
2013 "Write error.. waiting for end of file");
2017 stat_bytes = uint64_add32(stat_bytes,read);
2018 if (time(NULL) > stat_lasttime ||
2019 uint64_compare(uint64_add32(received, read), act.size) == 0) {
2020 stat_lasttime = time(NULL);
2021 print_stats(stat_name, act.size, stat_bytes,
2022 stat_starttime, stat_lasttime);
2025 received = uint64_add32(received, read);
2028 set_file_times(f, act.mtime, act.atime);
2033 run_err("%s: Write error", destfname);
2037 (void) scp_finish_filerecv();
2044 * We will copy local files to a remote server.
2046 static void toremote(int argc, char *argv[])
2048 char *src, *targ, *host, *user;
2054 targ = argv[argc - 1];
2056 /* Separate host from filename */
2060 bump("targ == NULL in toremote()");
2064 /* Substitute "." for empty target */
2066 /* Separate host and username */
2068 host = strrchr(host, '@');
2079 if (colon(argv[0]) != NULL)
2080 bump("%s: Remote to remote not supported", argv[0]);
2082 wc_type = test_wildcard(argv[0], 1);
2083 if (wc_type == WCTYPE_NONEXISTENT)
2084 bump("%s: No such file or directory\n", argv[0]);
2085 else if (wc_type == WCTYPE_WILDCARD)
2086 targetshouldbedirectory = 1;
2089 cmd = dupprintf("scp%s%s%s%s -t %s",
2090 verbose ? " -v" : "",
2091 recursive ? " -r" : "",
2092 preserve ? " -p" : "",
2093 targetshouldbedirectory ? " -d" : "", targ);
2094 do_cmd(host, user, cmd);
2097 if (scp_source_setup(targ, targetshouldbedirectory))
2100 for (i = 0; i < argc - 1; i++) {
2102 if (colon(src) != NULL) {
2103 tell_user(stderr, "%s: Remote to remote not supported\n", src);
2108 wc_type = test_wildcard(src, 1);
2109 if (wc_type == WCTYPE_NONEXISTENT) {
2110 run_err("%s: No such file or directory", src);
2112 } else if (wc_type == WCTYPE_FILENAME) {
2116 WildcardMatcher *wc;
2119 wc = begin_wildcard_matching(src);
2121 run_err("%s: No such file or directory", src);
2125 while ((filename = wildcard_get_filename(wc)) != NULL) {
2130 finish_wildcard_matching(wc);
2136 * We will copy files from a remote server to the local machine.
2138 static void tolocal(int argc, char *argv[])
2140 char *src, *targ, *host, *user;
2146 bump("More than one remote source not supported");
2151 /* Separate host from filename */
2155 bump("Local to local copy not supported");
2159 /* Substitute "." for empty filename */
2161 /* Separate username and hostname */
2163 host = strrchr(host, '@');
2173 cmd = dupprintf("scp%s%s%s%s -f %s",
2174 verbose ? " -v" : "",
2175 recursive ? " -r" : "",
2176 preserve ? " -p" : "",
2177 targetshouldbedirectory ? " -d" : "", src);
2178 do_cmd(host, user, cmd);
2181 if (scp_sink_setup(src, preserve, recursive))
2188 * We will issue a list command to get a remote directory.
2190 static void get_dir_list(int argc, char *argv[])
2192 char *src, *host, *user;
2198 /* Separate host from filename */
2202 bump("Local file listing not supported");
2206 /* Substitute "." for empty filename */
2208 /* Separate username and hostname */
2210 host = strrchr(host, '@');
2220 cmd = snewn(4 * strlen(src) + 100, char);
2221 strcpy(cmd, "ls -la '");
2222 p = cmd + strlen(cmd);
2223 for (q = src; *q; q++) {
2236 do_cmd(host, user, cmd);
2240 scp_sftp_listdir(src);
2242 while (ssh_scp_recv((unsigned char *) &c, 1) > 0)
2243 tell_char(stdout, c);
2248 * Short description of parameters.
2250 static void usage(void)
2252 printf("PuTTY Secure Copy client\n");
2253 printf("%s\n", ver);
2254 printf("Usage: pscp [options] [user@]host:source target\n");
2256 (" pscp [options] source [source...] [user@]host:target\n");
2257 printf(" pscp [options] -ls [user@]host:filespec\n");
2258 printf("Options:\n");
2259 printf(" -V print version information and exit\n");
2260 printf(" -pgpfp print PGP key fingerprints and exit\n");
2261 printf(" -p preserve file attributes\n");
2262 printf(" -q quiet, don't show statistics\n");
2263 printf(" -r copy directories recursively\n");
2264 printf(" -v show verbose messages\n");
2265 printf(" -load sessname Load settings from saved session\n");
2266 printf(" -P port connect to specified port\n");
2267 printf(" -l user connect with specified username\n");
2268 printf(" -pw passw login with specified password\n");
2269 printf(" -1 -2 force use of particular SSH protocol version\n");
2270 printf(" -4 -6 force use of IPv4 or IPv6\n");
2271 printf(" -C enable compression\n");
2272 printf(" -i key private key file for authentication\n");
2273 printf(" -noagent disable use of Pageant\n");
2274 printf(" -agent enable use of Pageant\n");
2275 printf(" -batch disable all interactive prompts\n");
2276 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2277 printf(" -sftp force use of SFTP protocol\n");
2278 printf(" -scp force use of SCP protocol\n");
2281 * -gui is an internal option, used by GUI front ends to get
2282 * pscp to pass progress reports back to them. It's not an
2283 * ordinary user-accessible option, so it shouldn't be part of
2284 * the command-line help. The only people who need to know
2285 * about it are programmers, and they can read the source.
2288 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2295 printf("pscp: %s\n", ver);
2299 void cmdline_error(char *p, ...)
2302 fprintf(stderr, "pscp: ");
2304 vfprintf(stderr, p, ap);
2306 fprintf(stderr, "\n try typing just \"pscp\" for help\n");
2311 * Main program. (Called `psftp_main' because it gets called from
2312 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2314 int psftp_main(int argc, char *argv[])
2318 default_protocol = PROT_TELNET;
2321 #ifdef FLAG_SYNCAGENT
2325 cmdline_tooltype = TOOLTYPE_FILETRANSFER;
2328 /* Load Default Settings before doing anything else. */
2330 do_defaults(NULL, conf);
2331 loaded_session = FALSE;
2333 for (i = 1; i < argc; i++) {
2335 if (argv[i][0] != '-')
2337 ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, conf);
2339 cmdline_error("option \"%s\" requires an argument", argv[i]);
2340 } else if (ret == 2) {
2341 i++; /* skip next argument */
2342 } else if (ret == 1) {
2343 /* We have our own verbosity in addition to `flags'. */
2344 if (flags & FLAG_VERBOSE)
2346 } else if (strcmp(argv[i], "-pgpfp") == 0) {
2349 } else if (strcmp(argv[i], "-r") == 0) {
2351 } else if (strcmp(argv[i], "-p") == 0) {
2353 } else if (strcmp(argv[i], "-q") == 0) {
2355 } else if (strcmp(argv[i], "-h") == 0 ||
2356 strcmp(argv[i], "-?") == 0 ||
2357 strcmp(argv[i], "--help") == 0) {
2359 } else if (strcmp(argv[i], "-V") == 0 ||
2360 strcmp(argv[i], "--version") == 0) {
2362 } else if (strcmp(argv[i], "-ls") == 0) {
2364 } else if (strcmp(argv[i], "-batch") == 0) {
2365 console_batch_mode = 1;
2366 } else if (strcmp(argv[i], "-unsafe") == 0) {
2367 scp_unsafe_mode = 1;
2368 } else if (strcmp(argv[i], "-sftp") == 0) {
2369 try_scp = 0; try_sftp = 1;
2370 } else if (strcmp(argv[i], "-scp") == 0) {
2371 try_scp = 1; try_sftp = 0;
2372 } else if (strcmp(argv[i], "--") == 0) {
2376 cmdline_error("unknown option \"%s\"", argv[i]);
2386 get_dir_list(argc, argv);
2393 targetshouldbedirectory = 1;
2395 if (colon(argv[argc - 1]) != NULL)
2396 toremote(argc, argv);
2398 tolocal(argc, argv);
2401 if (back != NULL && back->connected(backhandle)) {
2403 back->special(backhandle, TS_EOF);
2405 ssh_scp_recv((unsigned char *) &ch, 1);
2410 console_provide_logctx(NULL);
2411 back->free(backhandle);
2415 return (errs == 0 ? 0 : 1);