2 * Copyright (c) 2001,2002 Damien Miller. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 /* XXX: recursive operations */
28 RCSID("$OpenBSD: sftp-int.c,v 1.59 2003/05/15 03:39:07 mouring Exp $");
33 #include "pathnames.h"
36 #include "sftp-common.h"
37 #include "sftp-glob.h"
38 #include "sftp-client.h"
41 /* File to read commands from */
44 /* Size of buffer used when copying files */
45 extern size_t copy_buffer_len;
47 /* Number of concurrent outstanding requests */
48 extern int num_requests;
50 /* This is set to 0 if the progressmeter is not desired. */
53 /* Seperators for interactive commands */
54 #define WHITESPACE " \t\r\n"
56 /* Commands for interactive mode */
86 static const struct CMD cmds[] = {
99 { "lchdir", I_LCHDIR },
101 { "lmkdir", I_LMKDIR },
105 { "lumask", I_LUMASK },
106 { "mkdir", I_MKDIR },
107 { "progress", I_PROGRESS },
112 { "rename", I_RENAME },
114 { "rmdir", I_RMDIR },
115 { "symlink", I_SYMLINK },
116 { "version", I_VERSION },
125 printf("Available commands:\n");
126 printf("cd path Change remote directory to 'path'\n");
127 printf("lcd path Change local directory to 'path'\n");
128 printf("chgrp grp path Change group of file 'path' to 'grp'\n");
129 printf("chmod mode path Change permissions of file 'path' to 'mode'\n");
130 printf("chown own path Change owner of file 'path' to 'own'\n");
131 printf("help Display this help text\n");
132 printf("get remote-path [local-path] Download file\n");
133 printf("lls [ls-options [path]] Display local directory listing\n");
134 printf("ln oldpath newpath Symlink remote file\n");
135 printf("lmkdir path Create local directory\n");
136 printf("lpwd Print local working directory\n");
137 printf("ls [path] Display remote directory listing\n");
138 printf("lumask umask Set local umask to 'umask'\n");
139 printf("mkdir path Create remote directory\n");
140 printf("progress Toggle display of progress meter\n");
141 printf("put local-path [remote-path] Upload file\n");
142 printf("pwd Display remote working directory\n");
143 printf("exit Quit sftp\n");
144 printf("quit Quit sftp\n");
145 printf("rename oldpath newpath Rename remote file\n");
146 printf("rmdir path Remove remote directory\n");
147 printf("rm path Delete remote file\n");
148 printf("symlink oldpath newpath Symlink remote file\n");
149 printf("version Show SFTP version\n");
150 printf("!command Execute 'command' in local shell\n");
151 printf("! Escape to local shell\n");
152 printf("? Synonym for help\n");
156 local_do_shell(const char *args)
165 if ((shell = getenv("SHELL")) == NULL)
166 shell = _PATH_BSHELL;
168 if ((pid = fork()) == -1)
169 fatal("Couldn't fork: %s", strerror(errno));
172 /* XXX: child has pipe fds to ssh subproc open - issue? */
174 debug3("Executing %s -c \"%s\"", shell, args);
175 execl(shell, shell, "-c", args, (char *)NULL);
177 debug3("Executing %s", shell);
178 execl(shell, shell, (char *)NULL);
180 fprintf(stderr, "Couldn't execute \"%s\": %s\n", shell,
184 while (waitpid(pid, &status, 0) == -1)
186 fatal("Couldn't wait for child: %s", strerror(errno));
187 if (!WIFEXITED(status))
188 error("Shell exited abormally");
189 else if (WEXITSTATUS(status))
190 error("Shell exited with status %d", WEXITSTATUS(status));
194 local_do_ls(const char *args)
197 local_do_shell(_PATH_LS);
199 int len = strlen(_PATH_LS " ") + strlen(args) + 1;
200 char *buf = xmalloc(len);
202 /* XXX: quoting - rip quoting code from ftp? */
203 snprintf(buf, len, _PATH_LS " %s", args);
209 /* Strip one path (usually the pwd) from the start of another */
211 path_strip(char *path, char *strip)
216 return (xstrdup(path));
219 if (strip != NULL && strncmp(path, strip, len) == 0) {
220 if (strip[len - 1] != '/' && path[len] == '/')
222 return (xstrdup(path + len));
225 return (xstrdup(path));
229 path_append(char *p1, char *p2)
232 int len = strlen(p1) + strlen(p2) + 2;
235 strlcpy(ret, p1, len);
236 if (p1[strlen(p1) - 1] != '/')
237 strlcat(ret, "/", len);
238 strlcat(ret, p2, len);
244 make_absolute(char *p, char *pwd)
249 if (p && p[0] != '/') {
250 abs = path_append(pwd, p);
258 infer_path(const char *p, char **ifp)
262 cp = strrchr(p, '/');
269 error("Invalid path");
273 *ifp = xstrdup(cp + 1);
278 parse_getput_flags(const char **cpp, int *pflag)
280 const char *cp = *cpp;
282 /* Check for flags */
283 if (cp[0] == '-' && cp[1] && strchr(WHITESPACE, cp[2])) {
290 error("Invalid flag -%c", cp[1]);
294 *cpp = cp + strspn(cp, WHITESPACE);
301 parse_ls_flags(const char **cpp, int *lflag)
303 const char *cp = *cpp;
305 /* Check for flags */
306 if (cp++[0] == '-') {
307 for(; strchr(WHITESPACE, *cp) == NULL; cp++) {
313 error("Invalid flag -%c", *cp);
317 *cpp = cp + strspn(cp, WHITESPACE);
324 get_pathname(const char **cpp, char **path)
326 const char *cp = *cpp, *end;
330 cp += strspn(cp, WHITESPACE);
337 /* Check for quoted filenames */
338 if (*cp == '\"' || *cp == '\'') {
341 end = strchr(cp, quot);
343 error("Unterminated quote");
347 error("Empty quotes");
350 *cpp = end + 1 + strspn(end + 1, WHITESPACE);
352 /* Read to end of filename */
353 end = strpbrk(cp, WHITESPACE);
355 end = strchr(cp, '\0');
356 *cpp = end + strspn(end, WHITESPACE);
361 *path = xmalloc(i + 1);
362 memcpy(*path, cp, i);
376 /* XXX: report errors? */
377 if (stat(path, &sb) == -1)
380 return(sb.st_mode & S_IFDIR);
388 if (stat(path, &sb) == -1)
389 fatal("stat %s: %s", path, strerror(errno));
391 return(S_ISREG(sb.st_mode));
395 remote_is_dir(struct sftp_conn *conn, char *path)
399 /* XXX: report errors? */
400 if ((a = do_stat(conn, path, 1)) == NULL)
402 if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS))
404 return(a->perm & S_IFDIR);
408 process_get(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
410 char *abs_src = NULL;
411 char *abs_dst = NULL;
417 abs_src = xstrdup(src);
418 abs_src = make_absolute(abs_src, pwd);
420 memset(&g, 0, sizeof(g));
421 debug3("Looking up %s", abs_src);
422 if (remote_glob(conn, abs_src, 0, NULL, &g)) {
423 error("File \"%s\" not found.", abs_src);
428 /* If multiple matches, dst must be a directory or unspecified */
429 if (g.gl_matchc > 1 && dst && !is_dir(dst)) {
430 error("Multiple files match, but \"%s\" is not a directory",
436 for (i = 0; g.gl_pathv[i]; i++) {
437 if (infer_path(g.gl_pathv[i], &tmp)) {
442 if (g.gl_matchc == 1 && dst) {
443 /* If directory specified, append filename */
445 if (infer_path(g.gl_pathv[0], &tmp)) {
449 abs_dst = path_append(dst, tmp);
452 abs_dst = xstrdup(dst);
454 abs_dst = path_append(dst, tmp);
459 printf("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
460 if (do_download(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
475 process_put(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
477 char *tmp_dst = NULL;
478 char *abs_dst = NULL;
485 tmp_dst = xstrdup(dst);
486 tmp_dst = make_absolute(tmp_dst, pwd);
489 memset(&g, 0, sizeof(g));
490 debug3("Looking up %s", src);
491 if (glob(src, 0, NULL, &g)) {
492 error("File \"%s\" not found.", src);
497 /* If multiple matches, dst may be directory or unspecified */
498 if (g.gl_matchc > 1 && tmp_dst && !remote_is_dir(conn, tmp_dst)) {
499 error("Multiple files match, but \"%s\" is not a directory",
505 for (i = 0; g.gl_pathv[i]; i++) {
506 if (!is_reg(g.gl_pathv[i])) {
507 error("skipping non-regular file %s",
511 if (infer_path(g.gl_pathv[i], &tmp)) {
516 if (g.gl_matchc == 1 && tmp_dst) {
517 /* If directory specified, append filename */
518 if (remote_is_dir(conn, tmp_dst)) {
519 if (infer_path(g.gl_pathv[0], &tmp)) {
523 abs_dst = path_append(tmp_dst, tmp);
526 abs_dst = xstrdup(tmp_dst);
528 } else if (tmp_dst) {
529 abs_dst = path_append(tmp_dst, tmp);
532 abs_dst = make_absolute(tmp, pwd);
534 printf("Uploading %s to %s\n", g.gl_pathv[i], abs_dst);
535 if (do_upload(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
549 sdirent_comp(const void *aa, const void *bb)
551 SFTP_DIRENT *a = *(SFTP_DIRENT **)aa;
552 SFTP_DIRENT *b = *(SFTP_DIRENT **)bb;
554 return (strcmp(a->filename, b->filename));
557 /* sftp ls.1 replacement for directories */
559 do_ls_dir(struct sftp_conn *conn, char *path, char *strip_path, int lflag)
564 if ((n = do_readdir(conn, path, &d)) != 0)
567 /* Count entries for sort */
568 for (n = 0; d[n] != NULL; n++)
571 qsort(d, n, sizeof(*d), sdirent_comp);
573 for (n = 0; d[n] != NULL; n++) {
576 tmp = path_append(path, d[n]->filename);
577 fname = path_strip(tmp, strip_path);
584 memset(&sb, 0, sizeof(sb));
585 attrib_to_stat(&d[n]->a, &sb);
586 lname = ls_file(fname, &sb, 1);
587 printf("%s\n", lname);
590 /* XXX - multicolumn display would be nice here */
591 printf("%s\n", fname);
597 free_sftp_dirents(d);
601 /* sftp ls.1 replacement which handles path globs */
603 do_globbed_ls(struct sftp_conn *conn, char *path, char *strip_path,
611 memset(&g, 0, sizeof(g));
613 if (remote_glob(conn, path, GLOB_MARK|GLOB_NOCHECK|GLOB_BRACE,
615 error("Can't ls: \"%s\" not found", path);
620 * If the glob returns a single match, which is the same as the
621 * input glob, and it is a directory, then just list its contents
623 if (g.gl_pathc == 1 &&
624 strncmp(path, g.gl_pathv[0], strlen(g.gl_pathv[0]) - 1) == 0) {
625 if ((a = do_lstat(conn, path, 1)) == NULL) {
629 if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
632 return (do_ls_dir(conn, path, strip_path, lflag));
636 for (i = 0; g.gl_pathv[i]; i++) {
639 fname = path_strip(g.gl_pathv[i], strip_path);
643 * XXX: this is slow - 1 roundtrip per path
644 * A solution to this is to fork glob() and
645 * build a sftp specific version which keeps the
646 * attribs (which currently get thrown away)
647 * that the server returns as well as the filenames.
649 memset(&sb, 0, sizeof(sb));
650 a = do_lstat(conn, g.gl_pathv[i], 1);
652 attrib_to_stat(a, &sb);
653 lname = ls_file(fname, &sb, 1);
654 printf("%s\n", lname);
657 /* XXX - multicolumn display would be nice here */
658 printf("%s\n", fname);
670 parse_args(const char **cpp, int *pflag, int *lflag, int *iflag,
671 unsigned long *n_arg, char **path1, char **path2)
673 const char *cmd, *cp = *cpp;
679 /* Skip leading whitespace */
680 cp = cp + strspn(cp, WHITESPACE);
682 /* Ignore blank lines and lines which begin with comment '#' char */
683 if (*cp == '\0' || *cp == '#')
686 /* Check for leading '-' (disable error processing) */
693 /* Figure out which command we have */
694 for (i = 0; cmds[i].c; i++) {
695 int cmdlen = strlen(cmds[i].c);
697 /* Check for command followed by whitespace */
698 if (!strncasecmp(cp, cmds[i].c, cmdlen) &&
699 strchr(WHITESPACE, cp[cmdlen])) {
701 cp = cp + strspn(cp, WHITESPACE);
712 } else if (cmdnum == -1) {
713 error("Invalid command.");
717 /* Get arguments and parse flags */
718 *lflag = *pflag = *n_arg = 0;
719 *path1 = *path2 = NULL;
723 if (parse_getput_flags(&cp, pflag))
725 /* Get first pathname (mandatory) */
726 if (get_pathname(&cp, path1))
728 if (*path1 == NULL) {
729 error("You must specify at least one path after a "
733 /* Try to get second pathname (optional) */
734 if (get_pathname(&cp, path2))
739 if (get_pathname(&cp, path1))
741 if (get_pathname(&cp, path2))
743 if (!*path1 || !*path2) {
744 error("You must specify two paths after a %s "
755 /* Get pathname (mandatory) */
756 if (get_pathname(&cp, path1))
758 if (*path1 == NULL) {
759 error("You must specify a path after a %s command.",
765 if (parse_ls_flags(&cp, lflag))
767 /* Path is optional */
768 if (get_pathname(&cp, path1))
773 /* Uses the rest of the line */
781 /* Get numeric arg (mandatory) */
782 l = strtol(cp, &cp2, base);
783 if (cp2 == cp || ((l == LONG_MIN || l == LONG_MAX) &&
784 errno == ERANGE) || l < 0) {
785 error("You must supply a numeric argument "
786 "to the %s command.", cmd);
791 if (cmdnum == I_LUMASK && strchr(WHITESPACE, *cp))
793 if (cmdnum == I_LUMASK || !strchr(WHITESPACE, *cp)) {
794 error("You must supply a numeric argument "
795 "to the %s command.", cmd);
798 cp += strspn(cp, WHITESPACE);
800 /* Get pathname (mandatory) */
801 if (get_pathname(&cp, path1))
803 if (*path1 == NULL) {
804 error("You must specify a path after a %s command.",
817 fatal("Command not implemented");
825 parse_dispatch_command(struct sftp_conn *conn, const char *cmd, char **pwd,
828 char *path1, *path2, *tmp;
829 int pflag, lflag, iflag, cmdnum, i;
832 char path_buf[MAXPATHLEN];
836 path1 = path2 = NULL;
837 cmdnum = parse_args(&cmd, &pflag, &lflag, &iflag, &n_arg,
843 memset(&g, 0, sizeof(g));
845 /* Perform command */
851 /* Unrecognized command */
855 err = process_get(conn, path1, path2, *pwd, pflag);
858 err = process_put(conn, path1, path2, *pwd, pflag);
861 path1 = make_absolute(path1, *pwd);
862 path2 = make_absolute(path2, *pwd);
863 err = do_rename(conn, path1, path2);
866 path2 = make_absolute(path2, *pwd);
867 err = do_symlink(conn, path1, path2);
870 path1 = make_absolute(path1, *pwd);
871 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
872 for (i = 0; g.gl_pathv[i]; i++) {
873 printf("Removing %s\n", g.gl_pathv[i]);
874 err = do_rm(conn, g.gl_pathv[i]);
875 if (err != 0 && err_abort)
880 path1 = make_absolute(path1, *pwd);
882 a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
884 err = do_mkdir(conn, path1, &a);
887 path1 = make_absolute(path1, *pwd);
888 err = do_rmdir(conn, path1);
891 path1 = make_absolute(path1, *pwd);
892 if ((tmp = do_realpath(conn, path1)) == NULL) {
896 if ((aa = do_stat(conn, tmp, 0)) == NULL) {
901 if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) {
902 error("Can't change directory: Can't check target");
907 if (!S_ISDIR(aa->perm)) {
908 error("Can't change directory: \"%s\" is not "
919 do_globbed_ls(conn, *pwd, *pwd, lflag);
923 /* Strip pwd off beginning of non-absolute paths */
928 path1 = make_absolute(path1, *pwd);
929 err = do_globbed_ls(conn, path1, tmp, lflag);
932 if (chdir(path1) == -1) {
933 error("Couldn't change local directory to "
934 "\"%s\": %s", path1, strerror(errno));
939 if (mkdir(path1, 0777) == -1) {
940 error("Couldn't create local directory "
941 "\"%s\": %s", path1, strerror(errno));
953 printf("Local umask: %03lo\n", n_arg);
956 path1 = make_absolute(path1, *pwd);
958 a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
960 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
961 for (i = 0; g.gl_pathv[i]; i++) {
962 printf("Changing mode on %s\n", g.gl_pathv[i]);
963 err = do_setstat(conn, g.gl_pathv[i], &a);
964 if (err != 0 && err_abort)
970 path1 = make_absolute(path1, *pwd);
971 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
972 for (i = 0; g.gl_pathv[i]; i++) {
973 if (!(aa = do_stat(conn, g.gl_pathv[i], 0))) {
974 if (err != 0 && err_abort)
979 if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) {
980 error("Can't get current ownership of "
981 "remote file \"%s\"", g.gl_pathv[i]);
982 if (err != 0 && err_abort)
987 aa->flags &= SSH2_FILEXFER_ATTR_UIDGID;
988 if (cmdnum == I_CHOWN) {
989 printf("Changing owner on %s\n", g.gl_pathv[i]);
992 printf("Changing group on %s\n", g.gl_pathv[i]);
995 err = do_setstat(conn, g.gl_pathv[i], aa);
996 if (err != 0 && err_abort)
1001 printf("Remote working directory: %s\n", *pwd);
1004 if (!getcwd(path_buf, sizeof(path_buf))) {
1005 error("Couldn't get local cwd: %s", strerror(errno));
1009 printf("Local working directory: %s\n", path_buf);
1012 /* Processed below */
1018 printf("SFTP protocol version %u\n", sftp_proto_version(conn));
1021 showprogress = !showprogress;
1023 printf("Progress meter enabled\n");
1025 printf("Progress meter disabled\n");
1028 fatal("%d is not implemented", cmdnum);
1038 /* If an unignored error occurs in batch mode we should abort. */
1039 if (err_abort && err != 0)
1041 else if (cmdnum == I_QUIT)
1048 interactive_loop(int fd_in, int fd_out, char *file1, char *file2)
1053 struct sftp_conn *conn;
1056 conn = do_init(fd_in, fd_out, copy_buffer_len, num_requests);
1058 fatal("Couldn't initialise connection to server");
1060 pwd = do_realpath(conn, ".");
1064 if (file1 != NULL) {
1065 dir = xstrdup(file1);
1066 dir = make_absolute(dir, pwd);
1068 if (remote_is_dir(conn, dir) && file2 == NULL) {
1069 printf("Changing to: %s\n", dir);
1070 snprintf(cmd, sizeof cmd, "cd \"%s\"", dir);
1071 if (parse_dispatch_command(conn, cmd, &pwd, 1) != 0)
1075 snprintf(cmd, sizeof cmd, "get %s", dir);
1077 snprintf(cmd, sizeof cmd, "get %s %s", dir,
1080 err = parse_dispatch_command(conn, cmd, &pwd, 1);
1089 setvbuf(stdout, NULL, _IOLBF, 0);
1090 setvbuf(infile, NULL, _IOLBF, 0);
1102 /* XXX: use libedit */
1103 if (fgets(cmd, sizeof(cmd), infile) == NULL) {
1106 } else if (infile != stdin) /* Bluff typing */
1109 cp = strrchr(cmd, '\n');
1113 err = parse_dispatch_command(conn, cmd, &pwd, infile != stdin);
1119 /* err == 1 signifies normal "quit" exit */
1120 return (err >= 0 ? 0 : -1);