2 * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 RCSID("$OpenBSD: sftp.c,v 1.44 2004/02/17 11:03:08 djm Exp $");
24 #include "pathnames.h"
28 #include "sftp-common.h"
29 #include "sftp-client.h"
31 /* File to read commands from */
34 /* Are we in batchfile mode? */
37 /* Size of buffer used when copying files */
38 size_t copy_buffer_len = 32768;
40 /* Number of concurrent outstanding requests */
41 size_t num_requests = 16;
43 /* PID of ssh transport process */
44 static pid_t sshpid = -1;
46 /* This is set to 0 if the progressmeter is not desired. */
49 int remote_glob(struct sftp_conn *, const char *, int,
50 int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */
52 #ifdef HAVE___PROGNAME
53 extern char *__progname;
58 /* Separators for interactive commands */
59 #define WHITESPACE " \t\r\n"
61 /* Define what type of ls view (0 - multi-column) */
62 #define LONG_VIEW 1 /* Full view ala ls -l */
63 #define SHORT_VIEW 2 /* Single row view ala ls -1 */
65 /* Commands for interactive mode */
95 static const struct CMD cmds[] = {
100 { "chmod", I_CHMOD },
101 { "chown", I_CHOWN },
108 { "lchdir", I_LCHDIR },
110 { "lmkdir", I_LMKDIR },
114 { "lumask", I_LUMASK },
115 { "mkdir", I_MKDIR },
116 { "progress", I_PROGRESS },
121 { "rename", I_RENAME },
123 { "rmdir", I_RMDIR },
124 { "symlink", I_SYMLINK },
125 { "version", I_VERSION },
131 int interactive_loop(int fd_in, int fd_out, char *file1, char *file2);
136 printf("Available commands:\n");
137 printf("cd path Change remote directory to 'path'\n");
138 printf("lcd path Change local directory to 'path'\n");
139 printf("chgrp grp path Change group of file 'path' to 'grp'\n");
140 printf("chmod mode path Change permissions of file 'path' to 'mode'\n");
141 printf("chown own path Change owner of file 'path' to 'own'\n");
142 printf("help Display this help text\n");
143 printf("get remote-path [local-path] Download file\n");
144 printf("lls [ls-options [path]] Display local directory listing\n");
145 printf("ln oldpath newpath Symlink remote file\n");
146 printf("lmkdir path Create local directory\n");
147 printf("lpwd Print local working directory\n");
148 printf("ls [path] Display remote directory listing\n");
149 printf("lumask umask Set local umask to 'umask'\n");
150 printf("mkdir path Create remote directory\n");
151 printf("progress Toggle display of progress meter\n");
152 printf("put local-path [remote-path] Upload file\n");
153 printf("pwd Display remote working directory\n");
154 printf("exit Quit sftp\n");
155 printf("quit Quit sftp\n");
156 printf("rename oldpath newpath Rename remote file\n");
157 printf("rmdir path Remove remote directory\n");
158 printf("rm path Delete remote file\n");
159 printf("symlink oldpath newpath Symlink remote file\n");
160 printf("version Show SFTP version\n");
161 printf("!command Execute 'command' in local shell\n");
162 printf("! Escape to local shell\n");
163 printf("? Synonym for help\n");
167 local_do_shell(const char *args)
176 if ((shell = getenv("SHELL")) == NULL)
177 shell = _PATH_BSHELL;
179 if ((pid = fork()) == -1)
180 fatal("Couldn't fork: %s", strerror(errno));
183 /* XXX: child has pipe fds to ssh subproc open - issue? */
185 debug3("Executing %s -c \"%s\"", shell, args);
186 execl(shell, shell, "-c", args, (char *)NULL);
188 debug3("Executing %s", shell);
189 execl(shell, shell, (char *)NULL);
191 fprintf(stderr, "Couldn't execute \"%s\": %s\n", shell,
195 while (waitpid(pid, &status, 0) == -1)
197 fatal("Couldn't wait for child: %s", strerror(errno));
198 if (!WIFEXITED(status))
199 error("Shell exited abormally");
200 else if (WEXITSTATUS(status))
201 error("Shell exited with status %d", WEXITSTATUS(status));
205 local_do_ls(const char *args)
208 local_do_shell(_PATH_LS);
210 int len = strlen(_PATH_LS " ") + strlen(args) + 1;
211 char *buf = xmalloc(len);
213 /* XXX: quoting - rip quoting code from ftp? */
214 snprintf(buf, len, _PATH_LS " %s", args);
220 /* Strip one path (usually the pwd) from the start of another */
222 path_strip(char *path, char *strip)
227 return (xstrdup(path));
230 if (strip != NULL && strncmp(path, strip, len) == 0) {
231 if (strip[len - 1] != '/' && path[len] == '/')
233 return (xstrdup(path + len));
236 return (xstrdup(path));
240 path_append(char *p1, char *p2)
243 int len = strlen(p1) + strlen(p2) + 2;
246 strlcpy(ret, p1, len);
247 if (p1[strlen(p1) - 1] != '/')
248 strlcat(ret, "/", len);
249 strlcat(ret, p2, len);
255 make_absolute(char *p, char *pwd)
260 if (p && p[0] != '/') {
261 abs = path_append(pwd, p);
269 infer_path(const char *p, char **ifp)
273 cp = strrchr(p, '/');
280 error("Invalid path");
284 *ifp = xstrdup(cp + 1);
289 parse_getput_flags(const char **cpp, int *pflag)
291 const char *cp = *cpp;
293 /* Check for flags */
294 if (cp[0] == '-' && cp[1] && strchr(WHITESPACE, cp[2])) {
301 error("Invalid flag -%c", cp[1]);
305 *cpp = cp + strspn(cp, WHITESPACE);
312 parse_ls_flags(const char **cpp, int *lflag)
314 const char *cp = *cpp;
316 /* Check for flags */
317 if (cp++[0] == '-') {
318 for(; strchr(WHITESPACE, *cp) == NULL; cp++) {
327 error("Invalid flag -%c", *cp);
331 *cpp = cp + strspn(cp, WHITESPACE);
338 get_pathname(const char **cpp, char **path)
340 const char *cp = *cpp, *end;
344 cp += strspn(cp, WHITESPACE);
351 *path = xmalloc(strlen(cp) + 1);
353 /* Check for quoted filenames */
354 if (*cp == '\"' || *cp == '\'') {
357 /* Search for terminating quote, unescape some chars */
358 for (i = j = 0; i <= strlen(cp); i++) {
359 if (cp[i] == quot) { /* Found quote */
364 if (cp[i] == '\0') { /* End of string */
365 error("Unterminated quote");
368 if (cp[i] == '\\') { /* Escaped characters */
370 if (cp[i] != '\'' && cp[i] != '\"' &&
372 error("Bad escaped character '\%c'",
377 (*path)[j++] = cp[i];
381 error("Empty quotes");
384 *cpp = cp + i + strspn(cp + i, WHITESPACE);
386 /* Read to end of filename */
387 end = strpbrk(cp, WHITESPACE);
389 end = strchr(cp, '\0');
390 *cpp = end + strspn(end, WHITESPACE);
392 memcpy(*path, cp, end - cp);
393 (*path)[end - cp] = '\0';
408 /* XXX: report errors? */
409 if (stat(path, &sb) == -1)
412 return(sb.st_mode & S_IFDIR);
420 if (stat(path, &sb) == -1)
421 fatal("stat %s: %s", path, strerror(errno));
423 return(S_ISREG(sb.st_mode));
427 remote_is_dir(struct sftp_conn *conn, char *path)
431 /* XXX: report errors? */
432 if ((a = do_stat(conn, path, 1)) == NULL)
434 if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS))
436 return(a->perm & S_IFDIR);
440 process_get(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
442 char *abs_src = NULL;
443 char *abs_dst = NULL;
449 abs_src = xstrdup(src);
450 abs_src = make_absolute(abs_src, pwd);
452 memset(&g, 0, sizeof(g));
453 debug3("Looking up %s", abs_src);
454 if (remote_glob(conn, abs_src, 0, NULL, &g)) {
455 error("File \"%s\" not found.", abs_src);
460 /* If multiple matches, dst must be a directory or unspecified */
461 if (g.gl_matchc > 1 && dst && !is_dir(dst)) {
462 error("Multiple files match, but \"%s\" is not a directory",
468 for (i = 0; g.gl_pathv[i]; i++) {
469 if (infer_path(g.gl_pathv[i], &tmp)) {
474 if (g.gl_matchc == 1 && dst) {
475 /* If directory specified, append filename */
477 if (infer_path(g.gl_pathv[0], &tmp)) {
481 abs_dst = path_append(dst, tmp);
484 abs_dst = xstrdup(dst);
486 abs_dst = path_append(dst, tmp);
491 printf("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
492 if (do_download(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
507 process_put(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
509 char *tmp_dst = NULL;
510 char *abs_dst = NULL;
517 tmp_dst = xstrdup(dst);
518 tmp_dst = make_absolute(tmp_dst, pwd);
521 memset(&g, 0, sizeof(g));
522 debug3("Looking up %s", src);
523 if (glob(src, 0, NULL, &g)) {
524 error("File \"%s\" not found.", src);
529 /* If multiple matches, dst may be directory or unspecified */
530 if (g.gl_matchc > 1 && tmp_dst && !remote_is_dir(conn, tmp_dst)) {
531 error("Multiple files match, but \"%s\" is not a directory",
537 for (i = 0; g.gl_pathv[i]; i++) {
538 if (!is_reg(g.gl_pathv[i])) {
539 error("skipping non-regular file %s",
543 if (infer_path(g.gl_pathv[i], &tmp)) {
548 if (g.gl_matchc == 1 && tmp_dst) {
549 /* If directory specified, append filename */
550 if (remote_is_dir(conn, tmp_dst)) {
551 if (infer_path(g.gl_pathv[0], &tmp)) {
555 abs_dst = path_append(tmp_dst, tmp);
558 abs_dst = xstrdup(tmp_dst);
560 } else if (tmp_dst) {
561 abs_dst = path_append(tmp_dst, tmp);
564 abs_dst = make_absolute(tmp, pwd);
566 printf("Uploading %s to %s\n", g.gl_pathv[i], abs_dst);
567 if (do_upload(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
581 sdirent_comp(const void *aa, const void *bb)
583 SFTP_DIRENT *a = *(SFTP_DIRENT **)aa;
584 SFTP_DIRENT *b = *(SFTP_DIRENT **)bb;
586 return (strcmp(a->filename, b->filename));
589 /* sftp ls.1 replacement for directories */
591 do_ls_dir(struct sftp_conn *conn, char *path, char *strip_path, int lflag)
593 int n, c = 1, colspace = 0, columns = 1;
596 if ((n = do_readdir(conn, path, &d)) != 0)
599 if (!(lflag & SHORT_VIEW)) {
600 int m = 0, width = 80;
604 /* Count entries for sort and find longest filename */
605 for (n = 0; d[n] != NULL; n++)
606 m = MAX(m, strlen(d[n]->filename));
608 /* Add any subpath that also needs to be counted */
609 tmp = path_strip(path, strip_path);
613 if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
616 columns = width / (m + 2);
617 columns = MAX(columns, 1);
618 colspace = width / columns;
619 colspace = MIN(colspace, width);
622 qsort(d, n, sizeof(*d), sdirent_comp);
624 for (n = 0; d[n] != NULL; n++) {
627 tmp = path_append(path, d[n]->filename);
628 fname = path_strip(tmp, strip_path);
631 if (lflag & LONG_VIEW) {
635 memset(&sb, 0, sizeof(sb));
636 attrib_to_stat(&d[n]->a, &sb);
637 lname = ls_file(fname, &sb, 1);
638 printf("%s\n", lname);
641 printf("%-*s", colspace, fname);
652 if (!(lflag & LONG_VIEW) && (c != 1))
655 free_sftp_dirents(d);
659 /* sftp ls.1 replacement which handles path globs */
661 do_globbed_ls(struct sftp_conn *conn, char *path, char *strip_path,
665 int i, c = 1, colspace = 0, columns = 1;
668 memset(&g, 0, sizeof(g));
670 if (remote_glob(conn, path, GLOB_MARK|GLOB_NOCHECK|GLOB_BRACE,
672 error("Can't ls: \"%s\" not found", path);
677 * If the glob returns a single match, which is the same as the
678 * input glob, and it is a directory, then just list its contents
680 if (g.gl_pathc == 1 &&
681 strncmp(path, g.gl_pathv[0], strlen(g.gl_pathv[0]) - 1) == 0) {
682 if ((a = do_lstat(conn, path, 1)) == NULL) {
686 if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
689 return (do_ls_dir(conn, path, strip_path, lflag));
693 if (!(lflag & SHORT_VIEW)) {
694 int m = 0, width = 80;
697 /* Count entries for sort and find longest filename */
698 for (i = 0; g.gl_pathv[i]; i++)
699 m = MAX(m, strlen(g.gl_pathv[i]));
701 if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
704 columns = width / (m + 2);
705 columns = MAX(columns, 1);
706 colspace = width / columns;
709 for (i = 0; g.gl_pathv[i]; i++) {
712 fname = path_strip(g.gl_pathv[i], strip_path);
714 if (lflag & LONG_VIEW) {
719 * XXX: this is slow - 1 roundtrip per path
720 * A solution to this is to fork glob() and
721 * build a sftp specific version which keeps the
722 * attribs (which currently get thrown away)
723 * that the server returns as well as the filenames.
725 memset(&sb, 0, sizeof(sb));
726 a = do_lstat(conn, g.gl_pathv[i], 1);
728 attrib_to_stat(a, &sb);
729 lname = ls_file(fname, &sb, 1);
730 printf("%s\n", lname);
733 printf("%-*s", colspace, fname);
743 if (!(lflag & LONG_VIEW) && (c != 1))
753 parse_args(const char **cpp, int *pflag, int *lflag, int *iflag,
754 unsigned long *n_arg, char **path1, char **path2)
756 const char *cmd, *cp = *cpp;
762 /* Skip leading whitespace */
763 cp = cp + strspn(cp, WHITESPACE);
765 /* Ignore blank lines and lines which begin with comment '#' char */
766 if (*cp == '\0' || *cp == '#')
769 /* Check for leading '-' (disable error processing) */
776 /* Figure out which command we have */
777 for (i = 0; cmds[i].c; i++) {
778 int cmdlen = strlen(cmds[i].c);
780 /* Check for command followed by whitespace */
781 if (!strncasecmp(cp, cmds[i].c, cmdlen) &&
782 strchr(WHITESPACE, cp[cmdlen])) {
784 cp = cp + strspn(cp, WHITESPACE);
795 } else if (cmdnum == -1) {
796 error("Invalid command.");
800 /* Get arguments and parse flags */
801 *lflag = *pflag = *n_arg = 0;
802 *path1 = *path2 = NULL;
806 if (parse_getput_flags(&cp, pflag))
808 /* Get first pathname (mandatory) */
809 if (get_pathname(&cp, path1))
811 if (*path1 == NULL) {
812 error("You must specify at least one path after a "
816 /* Try to get second pathname (optional) */
817 if (get_pathname(&cp, path2))
822 if (get_pathname(&cp, path1))
824 if (get_pathname(&cp, path2))
826 if (!*path1 || !*path2) {
827 error("You must specify two paths after a %s "
838 /* Get pathname (mandatory) */
839 if (get_pathname(&cp, path1))
841 if (*path1 == NULL) {
842 error("You must specify a path after a %s command.",
848 if (parse_ls_flags(&cp, lflag))
850 /* Path is optional */
851 if (get_pathname(&cp, path1))
856 /* Uses the rest of the line */
864 /* Get numeric arg (mandatory) */
865 l = strtol(cp, &cp2, base);
866 if (cp2 == cp || ((l == LONG_MIN || l == LONG_MAX) &&
867 errno == ERANGE) || l < 0) {
868 error("You must supply a numeric argument "
869 "to the %s command.", cmd);
874 if (cmdnum == I_LUMASK && strchr(WHITESPACE, *cp))
876 if (cmdnum == I_LUMASK || !strchr(WHITESPACE, *cp)) {
877 error("You must supply a numeric argument "
878 "to the %s command.", cmd);
881 cp += strspn(cp, WHITESPACE);
883 /* Get pathname (mandatory) */
884 if (get_pathname(&cp, path1))
886 if (*path1 == NULL) {
887 error("You must specify a path after a %s command.",
900 fatal("Command not implemented");
908 parse_dispatch_command(struct sftp_conn *conn, const char *cmd, char **pwd,
911 char *path1, *path2, *tmp;
912 int pflag, lflag, iflag, cmdnum, i;
915 char path_buf[MAXPATHLEN];
919 path1 = path2 = NULL;
920 cmdnum = parse_args(&cmd, &pflag, &lflag, &iflag, &n_arg,
926 memset(&g, 0, sizeof(g));
928 /* Perform command */
934 /* Unrecognized command */
938 err = process_get(conn, path1, path2, *pwd, pflag);
941 err = process_put(conn, path1, path2, *pwd, pflag);
944 path1 = make_absolute(path1, *pwd);
945 path2 = make_absolute(path2, *pwd);
946 err = do_rename(conn, path1, path2);
949 path2 = make_absolute(path2, *pwd);
950 err = do_symlink(conn, path1, path2);
953 path1 = make_absolute(path1, *pwd);
954 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
955 for (i = 0; g.gl_pathv[i]; i++) {
956 printf("Removing %s\n", g.gl_pathv[i]);
957 err = do_rm(conn, g.gl_pathv[i]);
958 if (err != 0 && err_abort)
963 path1 = make_absolute(path1, *pwd);
965 a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
967 err = do_mkdir(conn, path1, &a);
970 path1 = make_absolute(path1, *pwd);
971 err = do_rmdir(conn, path1);
974 path1 = make_absolute(path1, *pwd);
975 if ((tmp = do_realpath(conn, path1)) == NULL) {
979 if ((aa = do_stat(conn, tmp, 0)) == NULL) {
984 if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) {
985 error("Can't change directory: Can't check target");
990 if (!S_ISDIR(aa->perm)) {
991 error("Can't change directory: \"%s\" is not "
1002 do_globbed_ls(conn, *pwd, *pwd, lflag);
1006 /* Strip pwd off beginning of non-absolute paths */
1011 path1 = make_absolute(path1, *pwd);
1012 err = do_globbed_ls(conn, path1, tmp, lflag);
1015 if (chdir(path1) == -1) {
1016 error("Couldn't change local directory to "
1017 "\"%s\": %s", path1, strerror(errno));
1022 if (mkdir(path1, 0777) == -1) {
1023 error("Couldn't create local directory "
1024 "\"%s\": %s", path1, strerror(errno));
1032 local_do_shell(cmd);
1036 printf("Local umask: %03lo\n", n_arg);
1039 path1 = make_absolute(path1, *pwd);
1041 a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
1043 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1044 for (i = 0; g.gl_pathv[i]; i++) {
1045 printf("Changing mode on %s\n", g.gl_pathv[i]);
1046 err = do_setstat(conn, g.gl_pathv[i], &a);
1047 if (err != 0 && err_abort)
1053 path1 = make_absolute(path1, *pwd);
1054 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1055 for (i = 0; g.gl_pathv[i]; i++) {
1056 if (!(aa = do_stat(conn, g.gl_pathv[i], 0))) {
1057 if (err != 0 && err_abort)
1062 if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) {
1063 error("Can't get current ownership of "
1064 "remote file \"%s\"", g.gl_pathv[i]);
1065 if (err != 0 && err_abort)
1070 aa->flags &= SSH2_FILEXFER_ATTR_UIDGID;
1071 if (cmdnum == I_CHOWN) {
1072 printf("Changing owner on %s\n", g.gl_pathv[i]);
1075 printf("Changing group on %s\n", g.gl_pathv[i]);
1078 err = do_setstat(conn, g.gl_pathv[i], aa);
1079 if (err != 0 && err_abort)
1084 printf("Remote working directory: %s\n", *pwd);
1087 if (!getcwd(path_buf, sizeof(path_buf))) {
1088 error("Couldn't get local cwd: %s", strerror(errno));
1092 printf("Local working directory: %s\n", path_buf);
1095 /* Processed below */
1101 printf("SFTP protocol version %u\n", sftp_proto_version(conn));
1104 showprogress = !showprogress;
1106 printf("Progress meter enabled\n");
1108 printf("Progress meter disabled\n");
1111 fatal("%d is not implemented", cmdnum);
1121 /* If an unignored error occurs in batch mode we should abort. */
1122 if (err_abort && err != 0)
1124 else if (cmdnum == I_QUIT)
1131 interactive_loop(int fd_in, int fd_out, char *file1, char *file2)
1136 struct sftp_conn *conn;
1139 conn = do_init(fd_in, fd_out, copy_buffer_len, num_requests);
1141 fatal("Couldn't initialise connection to server");
1143 pwd = do_realpath(conn, ".");
1147 if (file1 != NULL) {
1148 dir = xstrdup(file1);
1149 dir = make_absolute(dir, pwd);
1151 if (remote_is_dir(conn, dir) && file2 == NULL) {
1152 printf("Changing to: %s\n", dir);
1153 snprintf(cmd, sizeof cmd, "cd \"%s\"", dir);
1154 if (parse_dispatch_command(conn, cmd, &pwd, 1) != 0)
1158 snprintf(cmd, sizeof cmd, "get %s", dir);
1160 snprintf(cmd, sizeof cmd, "get %s %s", dir,
1163 err = parse_dispatch_command(conn, cmd, &pwd, 1);
1172 setvbuf(stdout, NULL, _IOLBF, 0);
1173 setvbuf(infile, NULL, _IOLBF, 0);
1185 /* XXX: use libedit */
1186 if (fgets(cmd, sizeof(cmd), infile) == NULL) {
1191 if (batchmode) /* Echo command */
1194 cp = strrchr(cmd, '\n');
1198 err = parse_dispatch_command(conn, cmd, &pwd, batchmode);
1204 /* err == 1 signifies normal "quit" exit */
1205 return (err >= 0 ? 0 : -1);
1209 killchild(int signo)
1212 kill(sshpid, signo);
1218 connect_to_server(char *path, char **args, int *in, int *out)
1223 int pin[2], pout[2];
1225 if ((pipe(pin) == -1) || (pipe(pout) == -1))
1226 fatal("pipe: %s", strerror(errno));
1231 #else /* USE_PIPES */
1234 if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
1235 fatal("socketpair: %s", strerror(errno));
1236 *in = *out = inout[0];
1237 c_in = c_out = inout[1];
1238 #endif /* USE_PIPES */
1240 if ((sshpid = fork()) == -1)
1241 fatal("fork: %s", strerror(errno));
1242 else if (sshpid == 0) {
1243 if ((dup2(c_in, STDIN_FILENO) == -1) ||
1244 (dup2(c_out, STDOUT_FILENO) == -1)) {
1245 fprintf(stderr, "dup2: %s\n", strerror(errno));
1253 fprintf(stderr, "exec: %s: %s\n", path, strerror(errno));
1257 signal(SIGTERM, killchild);
1258 signal(SIGINT, killchild);
1259 signal(SIGHUP, killchild);
1267 extern char *__progname;
1270 "usage: %s [-1Cv] [-B buffer_size] [-b batchfile] [-F ssh_config]\n"
1271 " [-o ssh_option] [-P sftp_server_path] [-R num_requests]\n"
1272 " [-S program] [-s subsystem | sftp_server] host\n"
1273 " %s [[user@]host[:file [file]]]\n"
1274 " %s [[user@]host[:dir[/]]]\n"
1275 " %s -b batchfile [user@]host\n", __progname, __progname, __progname, __progname);
1280 main(int argc, char **argv)
1282 int in, out, ch, err;
1283 char *host, *userhost, *cp, *file2;
1284 int debug_level = 0, sshver = 2;
1285 char *file1 = NULL, *sftp_server = NULL;
1286 char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
1287 LogLevel ll = SYSLOG_LEVEL_INFO;
1290 extern char *optarg;
1292 __progname = ssh_get_progname(argv[0]);
1294 addargs(&args, "ssh"); /* overwritten with ssh_program */
1295 addargs(&args, "-oForwardX11 no");
1296 addargs(&args, "-oForwardAgent no");
1297 addargs(&args, "-oClearAllForwardings yes");
1299 ll = SYSLOG_LEVEL_INFO;
1302 while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) {
1305 addargs(&args, "-C");
1308 if (debug_level < 3) {
1309 addargs(&args, "-v");
1310 ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
1316 addargs(&args, "-%c%s", ch, optarg);
1320 if (sftp_server == NULL)
1321 sftp_server = _PATH_SFTP_SERVER;
1324 sftp_server = optarg;
1327 ssh_program = optarg;
1331 fatal("Batch file already specified.");
1333 /* Allow "-" as stdin */
1334 if (strcmp(optarg, "-") != 0 &&
1335 (infile = fopen(optarg, "r")) == NULL)
1336 fatal("%s (%s).", strerror(errno), optarg);
1341 sftp_direct = optarg;
1344 copy_buffer_len = strtol(optarg, &cp, 10);
1345 if (copy_buffer_len == 0 || *cp != '\0')
1346 fatal("Invalid buffer size \"%s\"", optarg);
1349 num_requests = strtol(optarg, &cp, 10);
1350 if (num_requests == 0 || *cp != '\0')
1351 fatal("Invalid number of requests \"%s\"",
1360 log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
1362 if (sftp_direct == NULL) {
1363 if (optind == argc || argc > (optind + 2))
1366 userhost = xstrdup(argv[optind]);
1367 file2 = argv[optind+1];
1369 if ((host = strrchr(userhost, '@')) == NULL)
1374 fprintf(stderr, "Missing username\n");
1377 addargs(&args, "-l%s",userhost);
1380 if ((cp = colon(host)) != NULL) {
1385 host = cleanhostname(host);
1387 fprintf(stderr, "Missing hostname\n");
1391 addargs(&args, "-oProtocol %d", sshver);
1393 /* no subsystem if the server-spec contains a '/' */
1394 if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
1395 addargs(&args, "-s");
1397 addargs(&args, "%s", host);
1398 addargs(&args, "%s", (sftp_server != NULL ?
1399 sftp_server : "sftp"));
1400 args.list[0] = ssh_program;
1403 fprintf(stderr, "Connecting to %s...\n", host);
1404 connect_to_server(ssh_program, args.list, &in, &out);
1407 addargs(&args, "sftp-server");
1410 fprintf(stderr, "Attaching to %s...\n", sftp_direct);
1411 connect_to_server(sftp_direct, args.list, &in, &out);
1414 err = interactive_loop(in, out, file1, file2);
1416 #if !defined(USE_PIPES)
1417 shutdown(in, SHUT_RDWR);
1418 shutdown(out, SHUT_RDWR);
1426 while (waitpid(sshpid, NULL, 0) == -1)
1428 fatal("Couldn't wait for ssh process: %s",
1431 exit(err == 0 ? 0 : 1);