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1.96 ! stevesk 1: /* $OpenBSD: sftp.c,v 1.95 2007/01/03 03:01:40 stevesk Exp $ */
1.1 djm 2: /*
1.42 djm 3: * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
1.1 djm 4: *
1.42 djm 5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 djm 8: *
1.42 djm 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 djm 16: */
17:
1.91 deraadt 18: #include <sys/types.h>
1.72 stevesk 19: #include <sys/ioctl.h>
1.73 stevesk 20: #include <sys/wait.h>
1.75 stevesk 21: #include <sys/stat.h>
1.83 stevesk 22: #include <sys/socket.h>
1.88 stevesk 23: #include <sys/param.h>
1.44 djm 24:
1.85 stevesk 25: #include <errno.h>
1.44 djm 26: #include <glob.h>
1.57 djm 27: #include <histedit.h>
1.71 stevesk 28: #include <paths.h>
1.74 stevesk 29: #include <signal.h>
1.89 stevesk 30: #include <stdlib.h>
1.90 stevesk 31: #include <stdio.h>
1.87 stevesk 32: #include <string.h>
1.86 stevesk 33: #include <unistd.h>
1.91 deraadt 34: #include <stdarg.h>
1.1 djm 35:
36: #include "xmalloc.h"
37: #include "log.h"
38: #include "pathnames.h"
1.16 mouring 39: #include "misc.h"
1.1 djm 40:
41: #include "sftp.h"
1.91 deraadt 42: #include "buffer.h"
1.1 djm 43: #include "sftp-common.h"
44: #include "sftp-client.h"
1.43 djm 45:
1.44 djm 46: /* File to read commands from */
47: FILE* infile;
1.15 mouring 48:
1.44 djm 49: /* Are we in batchfile mode? */
1.39 djm 50: int batchmode = 0;
1.44 djm 51:
52: /* Size of buffer used when copying files */
1.24 djm 53: size_t copy_buffer_len = 32768;
1.44 djm 54:
55: /* Number of concurrent outstanding requests */
1.26 djm 56: size_t num_requests = 16;
1.44 djm 57:
58: /* PID of ssh transport process */
1.36 djm 59: static pid_t sshpid = -1;
1.7 markus 60:
1.44 djm 61: /* This is set to 0 if the progressmeter is not desired. */
1.45 djm 62: int showprogress = 1;
1.44 djm 63:
1.46 djm 64: /* SIGINT received during command processing */
65: volatile sig_atomic_t interrupted = 0;
66:
1.52 djm 67: /* I wish qsort() took a separate ctx for the comparison function...*/
68: int sort_flag;
69:
1.44 djm 70: int remote_glob(struct sftp_conn *, const char *, int,
71: int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */
72:
73: /* Separators for interactive commands */
74: #define WHITESPACE " \t\r\n"
75:
1.52 djm 76: /* ls flags */
1.53 djm 77: #define LS_LONG_VIEW 0x01 /* Full view ala ls -l */
78: #define LS_SHORT_VIEW 0x02 /* Single row view ala ls -1 */
79: #define LS_NUMERIC_VIEW 0x04 /* Long view with numeric uid/gid */
80: #define LS_NAME_SORT 0x08 /* Sort by name (default) */
81: #define LS_TIME_SORT 0x10 /* Sort by mtime */
82: #define LS_SIZE_SORT 0x20 /* Sort by file size */
83: #define LS_REVERSE_SORT 0x40 /* Reverse sort order */
1.54 djm 84: #define LS_SHOW_ALL 0x80 /* Don't skip filenames starting with '.' */
1.52 djm 85:
1.53 djm 86: #define VIEW_FLAGS (LS_LONG_VIEW|LS_SHORT_VIEW|LS_NUMERIC_VIEW)
87: #define SORT_FLAGS (LS_NAME_SORT|LS_TIME_SORT|LS_SIZE_SORT)
1.44 djm 88:
89: /* Commands for interactive mode */
90: #define I_CHDIR 1
91: #define I_CHGRP 2
92: #define I_CHMOD 3
93: #define I_CHOWN 4
94: #define I_GET 5
95: #define I_HELP 6
96: #define I_LCHDIR 7
97: #define I_LLS 8
98: #define I_LMKDIR 9
99: #define I_LPWD 10
100: #define I_LS 11
101: #define I_LUMASK 12
102: #define I_MKDIR 13
103: #define I_PUT 14
104: #define I_PWD 15
105: #define I_QUIT 16
106: #define I_RENAME 17
107: #define I_RM 18
108: #define I_RMDIR 19
109: #define I_SHELL 20
110: #define I_SYMLINK 21
111: #define I_VERSION 22
112: #define I_PROGRESS 23
113:
114: struct CMD {
115: const char *c;
116: const int n;
117: };
118:
119: static const struct CMD cmds[] = {
120: { "bye", I_QUIT },
121: { "cd", I_CHDIR },
122: { "chdir", I_CHDIR },
123: { "chgrp", I_CHGRP },
124: { "chmod", I_CHMOD },
125: { "chown", I_CHOWN },
126: { "dir", I_LS },
127: { "exit", I_QUIT },
128: { "get", I_GET },
129: { "mget", I_GET },
130: { "help", I_HELP },
131: { "lcd", I_LCHDIR },
132: { "lchdir", I_LCHDIR },
133: { "lls", I_LLS },
134: { "lmkdir", I_LMKDIR },
135: { "ln", I_SYMLINK },
136: { "lpwd", I_LPWD },
137: { "ls", I_LS },
138: { "lumask", I_LUMASK },
139: { "mkdir", I_MKDIR },
140: { "progress", I_PROGRESS },
141: { "put", I_PUT },
142: { "mput", I_PUT },
143: { "pwd", I_PWD },
144: { "quit", I_QUIT },
145: { "rename", I_RENAME },
146: { "rm", I_RM },
147: { "rmdir", I_RMDIR },
148: { "symlink", I_SYMLINK },
149: { "version", I_VERSION },
150: { "!", I_SHELL },
151: { "?", I_HELP },
152: { NULL, -1}
153: };
154:
155: int interactive_loop(int fd_in, int fd_out, char *file1, char *file2);
156:
1.96 ! stevesk 157: /* ARGSUSED */
1.44 djm 158: static void
1.46 djm 159: killchild(int signo)
160: {
1.61 dtucker 161: if (sshpid > 1) {
1.46 djm 162: kill(sshpid, SIGTERM);
1.61 dtucker 163: waitpid(sshpid, NULL, 0);
164: }
1.46 djm 165:
166: _exit(1);
167: }
168:
1.96 ! stevesk 169: /* ARGSUSED */
1.46 djm 170: static void
171: cmd_interrupt(int signo)
172: {
173: const char msg[] = "\rInterrupt \n";
1.59 djm 174: int olderrno = errno;
1.46 djm 175:
176: write(STDERR_FILENO, msg, sizeof(msg) - 1);
177: interrupted = 1;
1.59 djm 178: errno = olderrno;
1.46 djm 179: }
180:
181: static void
1.44 djm 182: help(void)
183: {
184: printf("Available commands:\n");
185: printf("cd path Change remote directory to 'path'\n");
186: printf("lcd path Change local directory to 'path'\n");
187: printf("chgrp grp path Change group of file 'path' to 'grp'\n");
188: printf("chmod mode path Change permissions of file 'path' to 'mode'\n");
189: printf("chown own path Change owner of file 'path' to 'own'\n");
190: printf("help Display this help text\n");
191: printf("get remote-path [local-path] Download file\n");
192: printf("lls [ls-options [path]] Display local directory listing\n");
193: printf("ln oldpath newpath Symlink remote file\n");
194: printf("lmkdir path Create local directory\n");
195: printf("lpwd Print local working directory\n");
196: printf("ls [path] Display remote directory listing\n");
197: printf("lumask umask Set local umask to 'umask'\n");
198: printf("mkdir path Create remote directory\n");
199: printf("progress Toggle display of progress meter\n");
200: printf("put local-path [remote-path] Upload file\n");
201: printf("pwd Display remote working directory\n");
202: printf("exit Quit sftp\n");
203: printf("quit Quit sftp\n");
204: printf("rename oldpath newpath Rename remote file\n");
205: printf("rmdir path Remove remote directory\n");
206: printf("rm path Delete remote file\n");
207: printf("symlink oldpath newpath Symlink remote file\n");
208: printf("version Show SFTP version\n");
209: printf("!command Execute 'command' in local shell\n");
210: printf("! Escape to local shell\n");
211: printf("? Synonym for help\n");
212: }
213:
214: static void
215: local_do_shell(const char *args)
216: {
217: int status;
218: char *shell;
219: pid_t pid;
220:
221: if (!*args)
222: args = NULL;
223:
224: if ((shell = getenv("SHELL")) == NULL)
225: shell = _PATH_BSHELL;
226:
227: if ((pid = fork()) == -1)
228: fatal("Couldn't fork: %s", strerror(errno));
229:
230: if (pid == 0) {
231: /* XXX: child has pipe fds to ssh subproc open - issue? */
232: if (args) {
233: debug3("Executing %s -c \"%s\"", shell, args);
234: execl(shell, shell, "-c", args, (char *)NULL);
235: } else {
236: debug3("Executing %s", shell);
237: execl(shell, shell, (char *)NULL);
238: }
239: fprintf(stderr, "Couldn't execute \"%s\": %s\n", shell,
240: strerror(errno));
241: _exit(1);
242: }
243: while (waitpid(pid, &status, 0) == -1)
244: if (errno != EINTR)
245: fatal("Couldn't wait for child: %s", strerror(errno));
246: if (!WIFEXITED(status))
1.78 djm 247: error("Shell exited abnormally");
1.44 djm 248: else if (WEXITSTATUS(status))
249: error("Shell exited with status %d", WEXITSTATUS(status));
250: }
251:
252: static void
253: local_do_ls(const char *args)
254: {
255: if (!args || !*args)
256: local_do_shell(_PATH_LS);
257: else {
258: int len = strlen(_PATH_LS " ") + strlen(args) + 1;
259: char *buf = xmalloc(len);
260:
261: /* XXX: quoting - rip quoting code from ftp? */
262: snprintf(buf, len, _PATH_LS " %s", args);
263: local_do_shell(buf);
264: xfree(buf);
265: }
266: }
267:
268: /* Strip one path (usually the pwd) from the start of another */
269: static char *
270: path_strip(char *path, char *strip)
271: {
272: size_t len;
273:
274: if (strip == NULL)
275: return (xstrdup(path));
276:
277: len = strlen(strip);
1.59 djm 278: if (strncmp(path, strip, len) == 0) {
1.44 djm 279: if (strip[len - 1] != '/' && path[len] == '/')
280: len++;
281: return (xstrdup(path + len));
282: }
283:
284: return (xstrdup(path));
285: }
286:
287: static char *
288: path_append(char *p1, char *p2)
289: {
290: char *ret;
1.94 ray 291: size_t len = strlen(p1) + strlen(p2) + 2;
1.44 djm 292:
293: ret = xmalloc(len);
294: strlcpy(ret, p1, len);
1.94 ray 295: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1.44 djm 296: strlcat(ret, "/", len);
297: strlcat(ret, p2, len);
298:
299: return(ret);
300: }
301:
302: static char *
303: make_absolute(char *p, char *pwd)
304: {
1.51 avsm 305: char *abs_str;
1.44 djm 306:
307: /* Derelativise */
308: if (p && p[0] != '/') {
1.51 avsm 309: abs_str = path_append(pwd, p);
1.44 djm 310: xfree(p);
1.51 avsm 311: return(abs_str);
1.44 djm 312: } else
313: return(p);
314: }
315:
316: static int
317: infer_path(const char *p, char **ifp)
318: {
319: char *cp;
320:
321: cp = strrchr(p, '/');
322: if (cp == NULL) {
323: *ifp = xstrdup(p);
324: return(0);
325: }
326:
327: if (!cp[1]) {
328: error("Invalid path");
329: return(-1);
330: }
331:
332: *ifp = xstrdup(cp + 1);
333: return(0);
334: }
335:
336: static int
337: parse_getput_flags(const char **cpp, int *pflag)
338: {
339: const char *cp = *cpp;
340:
341: /* Check for flags */
342: if (cp[0] == '-' && cp[1] && strchr(WHITESPACE, cp[2])) {
343: switch (cp[1]) {
344: case 'p':
345: case 'P':
346: *pflag = 1;
347: break;
348: default:
349: error("Invalid flag -%c", cp[1]);
350: return(-1);
351: }
352: cp += 2;
353: *cpp = cp + strspn(cp, WHITESPACE);
354: }
355:
356: return(0);
357: }
358:
359: static int
360: parse_ls_flags(const char **cpp, int *lflag)
361: {
362: const char *cp = *cpp;
363:
1.52 djm 364: /* Defaults */
1.53 djm 365: *lflag = LS_NAME_SORT;
1.52 djm 366:
1.44 djm 367: /* Check for flags */
368: if (cp++[0] == '-') {
1.63 deraadt 369: for (; strchr(WHITESPACE, *cp) == NULL; cp++) {
1.44 djm 370: switch (*cp) {
371: case 'l':
1.50 djm 372: *lflag &= ~VIEW_FLAGS;
1.53 djm 373: *lflag |= LS_LONG_VIEW;
1.44 djm 374: break;
375: case '1':
1.50 djm 376: *lflag &= ~VIEW_FLAGS;
1.53 djm 377: *lflag |= LS_SHORT_VIEW;
1.50 djm 378: break;
379: case 'n':
380: *lflag &= ~VIEW_FLAGS;
1.53 djm 381: *lflag |= LS_NUMERIC_VIEW|LS_LONG_VIEW;
1.44 djm 382: break;
1.52 djm 383: case 'S':
384: *lflag &= ~SORT_FLAGS;
1.53 djm 385: *lflag |= LS_SIZE_SORT;
1.52 djm 386: break;
387: case 't':
388: *lflag &= ~SORT_FLAGS;
1.53 djm 389: *lflag |= LS_TIME_SORT;
1.52 djm 390: break;
391: case 'r':
1.53 djm 392: *lflag |= LS_REVERSE_SORT;
1.52 djm 393: break;
394: case 'f':
395: *lflag &= ~SORT_FLAGS;
396: break;
1.54 djm 397: case 'a':
398: *lflag |= LS_SHOW_ALL;
399: break;
1.44 djm 400: default:
401: error("Invalid flag -%c", *cp);
402: return(-1);
403: }
404: }
405: *cpp = cp + strspn(cp, WHITESPACE);
406: }
407:
408: return(0);
409: }
410:
411: static int
412: get_pathname(const char **cpp, char **path)
413: {
414: const char *cp = *cpp, *end;
415: char quot;
1.64 djm 416: u_int i, j;
1.44 djm 417:
418: cp += strspn(cp, WHITESPACE);
419: if (!*cp) {
420: *cpp = cp;
421: *path = NULL;
422: return (0);
423: }
424:
425: *path = xmalloc(strlen(cp) + 1);
426:
427: /* Check for quoted filenames */
428: if (*cp == '\"' || *cp == '\'') {
429: quot = *cp++;
430:
431: /* Search for terminating quote, unescape some chars */
432: for (i = j = 0; i <= strlen(cp); i++) {
433: if (cp[i] == quot) { /* Found quote */
434: i++;
435: (*path)[j] = '\0';
436: break;
437: }
438: if (cp[i] == '\0') { /* End of string */
439: error("Unterminated quote");
440: goto fail;
441: }
442: if (cp[i] == '\\') { /* Escaped characters */
443: i++;
444: if (cp[i] != '\'' && cp[i] != '\"' &&
445: cp[i] != '\\') {
1.55 djm 446: error("Bad escaped character '\\%c'",
1.44 djm 447: cp[i]);
448: goto fail;
449: }
450: }
451: (*path)[j++] = cp[i];
452: }
453:
454: if (j == 0) {
455: error("Empty quotes");
456: goto fail;
457: }
458: *cpp = cp + i + strspn(cp + i, WHITESPACE);
459: } else {
460: /* Read to end of filename */
461: end = strpbrk(cp, WHITESPACE);
462: if (end == NULL)
463: end = strchr(cp, '\0');
464: *cpp = end + strspn(end, WHITESPACE);
465:
466: memcpy(*path, cp, end - cp);
467: (*path)[end - cp] = '\0';
468: }
469: return (0);
470:
471: fail:
472: xfree(*path);
473: *path = NULL;
474: return (-1);
475: }
476:
477: static int
478: is_dir(char *path)
479: {
480: struct stat sb;
481:
482: /* XXX: report errors? */
483: if (stat(path, &sb) == -1)
484: return(0);
485:
1.92 otto 486: return(S_ISDIR(sb.st_mode));
1.44 djm 487: }
488:
489: static int
490: is_reg(char *path)
491: {
492: struct stat sb;
493:
494: if (stat(path, &sb) == -1)
495: fatal("stat %s: %s", path, strerror(errno));
496:
497: return(S_ISREG(sb.st_mode));
498: }
499:
500: static int
501: remote_is_dir(struct sftp_conn *conn, char *path)
502: {
503: Attrib *a;
504:
505: /* XXX: report errors? */
506: if ((a = do_stat(conn, path, 1)) == NULL)
507: return(0);
508: if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS))
509: return(0);
1.92 otto 510: return(S_ISDIR(a->perm));
1.44 djm 511: }
512:
513: static int
514: process_get(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
515: {
516: char *abs_src = NULL;
517: char *abs_dst = NULL;
518: char *tmp;
519: glob_t g;
520: int err = 0;
521: int i;
522:
523: abs_src = xstrdup(src);
524: abs_src = make_absolute(abs_src, pwd);
525:
526: memset(&g, 0, sizeof(g));
527: debug3("Looking up %s", abs_src);
528: if (remote_glob(conn, abs_src, 0, NULL, &g)) {
529: error("File \"%s\" not found.", abs_src);
530: err = -1;
531: goto out;
532: }
533:
534: /* If multiple matches, dst must be a directory or unspecified */
535: if (g.gl_matchc > 1 && dst && !is_dir(dst)) {
536: error("Multiple files match, but \"%s\" is not a directory",
537: dst);
538: err = -1;
539: goto out;
540: }
541:
1.46 djm 542: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1.44 djm 543: if (infer_path(g.gl_pathv[i], &tmp)) {
544: err = -1;
545: goto out;
546: }
547:
548: if (g.gl_matchc == 1 && dst) {
549: /* If directory specified, append filename */
1.82 markus 550: xfree(tmp);
1.44 djm 551: if (is_dir(dst)) {
552: if (infer_path(g.gl_pathv[0], &tmp)) {
553: err = 1;
554: goto out;
555: }
556: abs_dst = path_append(dst, tmp);
557: xfree(tmp);
558: } else
559: abs_dst = xstrdup(dst);
560: } else if (dst) {
561: abs_dst = path_append(dst, tmp);
562: xfree(tmp);
563: } else
564: abs_dst = tmp;
565:
566: printf("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
567: if (do_download(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
568: err = -1;
569: xfree(abs_dst);
570: abs_dst = NULL;
571: }
572:
573: out:
574: xfree(abs_src);
575: globfree(&g);
576: return(err);
577: }
578:
579: static int
580: process_put(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
581: {
582: char *tmp_dst = NULL;
583: char *abs_dst = NULL;
584: char *tmp;
585: glob_t g;
586: int err = 0;
587: int i;
588:
589: if (dst) {
590: tmp_dst = xstrdup(dst);
591: tmp_dst = make_absolute(tmp_dst, pwd);
592: }
593:
594: memset(&g, 0, sizeof(g));
595: debug3("Looking up %s", src);
596: if (glob(src, 0, NULL, &g)) {
597: error("File \"%s\" not found.", src);
598: err = -1;
599: goto out;
600: }
601:
602: /* If multiple matches, dst may be directory or unspecified */
603: if (g.gl_matchc > 1 && tmp_dst && !remote_is_dir(conn, tmp_dst)) {
604: error("Multiple files match, but \"%s\" is not a directory",
605: tmp_dst);
606: err = -1;
607: goto out;
608: }
609:
1.46 djm 610: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1.44 djm 611: if (!is_reg(g.gl_pathv[i])) {
612: error("skipping non-regular file %s",
613: g.gl_pathv[i]);
614: continue;
615: }
616: if (infer_path(g.gl_pathv[i], &tmp)) {
617: err = -1;
618: goto out;
619: }
620:
621: if (g.gl_matchc == 1 && tmp_dst) {
622: /* If directory specified, append filename */
623: if (remote_is_dir(conn, tmp_dst)) {
624: if (infer_path(g.gl_pathv[0], &tmp)) {
625: err = 1;
626: goto out;
627: }
628: abs_dst = path_append(tmp_dst, tmp);
629: xfree(tmp);
630: } else
631: abs_dst = xstrdup(tmp_dst);
632:
633: } else if (tmp_dst) {
634: abs_dst = path_append(tmp_dst, tmp);
635: xfree(tmp);
636: } else
637: abs_dst = make_absolute(tmp, pwd);
638:
639: printf("Uploading %s to %s\n", g.gl_pathv[i], abs_dst);
640: if (do_upload(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
641: err = -1;
642: }
643:
644: out:
645: if (abs_dst)
646: xfree(abs_dst);
647: if (tmp_dst)
648: xfree(tmp_dst);
649: globfree(&g);
650: return(err);
651: }
652:
653: static int
654: sdirent_comp(const void *aa, const void *bb)
655: {
656: SFTP_DIRENT *a = *(SFTP_DIRENT **)aa;
657: SFTP_DIRENT *b = *(SFTP_DIRENT **)bb;
1.53 djm 658: int rmul = sort_flag & LS_REVERSE_SORT ? -1 : 1;
1.44 djm 659:
1.52 djm 660: #define NCMP(a,b) (a == b ? 0 : (a < b ? 1 : -1))
1.53 djm 661: if (sort_flag & LS_NAME_SORT)
1.52 djm 662: return (rmul * strcmp(a->filename, b->filename));
1.53 djm 663: else if (sort_flag & LS_TIME_SORT)
1.52 djm 664: return (rmul * NCMP(a->a.mtime, b->a.mtime));
1.53 djm 665: else if (sort_flag & LS_SIZE_SORT)
1.52 djm 666: return (rmul * NCMP(a->a.size, b->a.size));
667:
668: fatal("Unknown ls sort type");
1.44 djm 669: }
670:
671: /* sftp ls.1 replacement for directories */
672: static int
673: do_ls_dir(struct sftp_conn *conn, char *path, char *strip_path, int lflag)
674: {
1.64 djm 675: int n;
676: u_int c = 1, colspace = 0, columns = 1;
1.44 djm 677: SFTP_DIRENT **d;
678:
679: if ((n = do_readdir(conn, path, &d)) != 0)
680: return (n);
681:
1.53 djm 682: if (!(lflag & LS_SHORT_VIEW)) {
1.64 djm 683: u_int m = 0, width = 80;
1.44 djm 684: struct winsize ws;
685: char *tmp;
686:
687: /* Count entries for sort and find longest filename */
1.54 djm 688: for (n = 0; d[n] != NULL; n++) {
689: if (d[n]->filename[0] != '.' || (lflag & LS_SHOW_ALL))
690: m = MAX(m, strlen(d[n]->filename));
691: }
1.44 djm 692:
693: /* Add any subpath that also needs to be counted */
694: tmp = path_strip(path, strip_path);
695: m += strlen(tmp);
696: xfree(tmp);
697:
698: if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
699: width = ws.ws_col;
700:
701: columns = width / (m + 2);
702: columns = MAX(columns, 1);
703: colspace = width / columns;
704: colspace = MIN(colspace, width);
705: }
706:
1.52 djm 707: if (lflag & SORT_FLAGS) {
1.68 dtucker 708: for (n = 0; d[n] != NULL; n++)
709: ; /* count entries */
1.53 djm 710: sort_flag = lflag & (SORT_FLAGS|LS_REVERSE_SORT);
1.52 djm 711: qsort(d, n, sizeof(*d), sdirent_comp);
712: }
1.44 djm 713:
1.46 djm 714: for (n = 0; d[n] != NULL && !interrupted; n++) {
1.44 djm 715: char *tmp, *fname;
1.54 djm 716:
717: if (d[n]->filename[0] == '.' && !(lflag & LS_SHOW_ALL))
718: continue;
1.44 djm 719:
720: tmp = path_append(path, d[n]->filename);
721: fname = path_strip(tmp, strip_path);
722: xfree(tmp);
723:
1.53 djm 724: if (lflag & LS_LONG_VIEW) {
725: if (lflag & LS_NUMERIC_VIEW) {
1.50 djm 726: char *lname;
727: struct stat sb;
728:
729: memset(&sb, 0, sizeof(sb));
730: attrib_to_stat(&d[n]->a, &sb);
731: lname = ls_file(fname, &sb, 1);
732: printf("%s\n", lname);
733: xfree(lname);
734: } else
735: printf("%s\n", d[n]->longname);
1.44 djm 736: } else {
737: printf("%-*s", colspace, fname);
738: if (c >= columns) {
739: printf("\n");
740: c = 1;
741: } else
742: c++;
743: }
744:
745: xfree(fname);
746: }
747:
1.53 djm 748: if (!(lflag & LS_LONG_VIEW) && (c != 1))
1.44 djm 749: printf("\n");
750:
751: free_sftp_dirents(d);
752: return (0);
753: }
754:
755: /* sftp ls.1 replacement which handles path globs */
756: static int
757: do_globbed_ls(struct sftp_conn *conn, char *path, char *strip_path,
758: int lflag)
759: {
760: glob_t g;
1.64 djm 761: u_int i, c = 1, colspace = 0, columns = 1;
1.60 fgsch 762: Attrib *a = NULL;
1.44 djm 763:
764: memset(&g, 0, sizeof(g));
765:
766: if (remote_glob(conn, path, GLOB_MARK|GLOB_NOCHECK|GLOB_BRACE,
1.60 fgsch 767: NULL, &g) || (g.gl_pathc && !g.gl_matchc)) {
768: if (g.gl_pathc)
769: globfree(&g);
1.44 djm 770: error("Can't ls: \"%s\" not found", path);
771: return (-1);
772: }
773:
1.46 djm 774: if (interrupted)
775: goto out;
776:
1.44 djm 777: /*
1.60 fgsch 778: * If the glob returns a single match and it is a directory,
779: * then just list its contents.
1.44 djm 780: */
1.60 fgsch 781: if (g.gl_matchc == 1) {
782: if ((a = do_lstat(conn, g.gl_pathv[0], 1)) == NULL) {
1.44 djm 783: globfree(&g);
784: return (-1);
785: }
786: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
787: S_ISDIR(a->perm)) {
1.60 fgsch 788: int err;
789:
790: err = do_ls_dir(conn, g.gl_pathv[0], strip_path, lflag);
1.44 djm 791: globfree(&g);
1.60 fgsch 792: return (err);
1.44 djm 793: }
794: }
795:
1.53 djm 796: if (!(lflag & LS_SHORT_VIEW)) {
1.64 djm 797: u_int m = 0, width = 80;
1.44 djm 798: struct winsize ws;
799:
800: /* Count entries for sort and find longest filename */
801: for (i = 0; g.gl_pathv[i]; i++)
802: m = MAX(m, strlen(g.gl_pathv[i]));
803:
804: if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
805: width = ws.ws_col;
806:
807: columns = width / (m + 2);
808: columns = MAX(columns, 1);
809: colspace = width / columns;
810: }
811:
1.60 fgsch 812: for (i = 0; g.gl_pathv[i] && !interrupted; i++, a = NULL) {
1.44 djm 813: char *fname;
814:
815: fname = path_strip(g.gl_pathv[i], strip_path);
816:
1.53 djm 817: if (lflag & LS_LONG_VIEW) {
1.44 djm 818: char *lname;
819: struct stat sb;
820:
821: /*
822: * XXX: this is slow - 1 roundtrip per path
823: * A solution to this is to fork glob() and
824: * build a sftp specific version which keeps the
825: * attribs (which currently get thrown away)
826: * that the server returns as well as the filenames.
827: */
828: memset(&sb, 0, sizeof(sb));
1.60 fgsch 829: if (a == NULL)
830: a = do_lstat(conn, g.gl_pathv[i], 1);
1.44 djm 831: if (a != NULL)
832: attrib_to_stat(a, &sb);
833: lname = ls_file(fname, &sb, 1);
834: printf("%s\n", lname);
835: xfree(lname);
836: } else {
837: printf("%-*s", colspace, fname);
838: if (c >= columns) {
839: printf("\n");
840: c = 1;
841: } else
842: c++;
843: }
844: xfree(fname);
845: }
846:
1.53 djm 847: if (!(lflag & LS_LONG_VIEW) && (c != 1))
1.44 djm 848: printf("\n");
849:
1.46 djm 850: out:
1.44 djm 851: if (g.gl_pathc)
852: globfree(&g);
853:
854: return (0);
855: }
856:
857: static int
858: parse_args(const char **cpp, int *pflag, int *lflag, int *iflag,
859: unsigned long *n_arg, char **path1, char **path2)
860: {
861: const char *cmd, *cp = *cpp;
862: char *cp2;
863: int base = 0;
864: long l;
865: int i, cmdnum;
866:
867: /* Skip leading whitespace */
868: cp = cp + strspn(cp, WHITESPACE);
869:
870: /* Ignore blank lines and lines which begin with comment '#' char */
871: if (*cp == '\0' || *cp == '#')
872: return (0);
873:
874: /* Check for leading '-' (disable error processing) */
875: *iflag = 0;
876: if (*cp == '-') {
877: *iflag = 1;
878: cp++;
879: }
880:
881: /* Figure out which command we have */
882: for (i = 0; cmds[i].c; i++) {
883: int cmdlen = strlen(cmds[i].c);
884:
885: /* Check for command followed by whitespace */
886: if (!strncasecmp(cp, cmds[i].c, cmdlen) &&
887: strchr(WHITESPACE, cp[cmdlen])) {
888: cp += cmdlen;
889: cp = cp + strspn(cp, WHITESPACE);
890: break;
891: }
892: }
893: cmdnum = cmds[i].n;
894: cmd = cmds[i].c;
895:
896: /* Special case */
897: if (*cp == '!') {
898: cp++;
899: cmdnum = I_SHELL;
900: } else if (cmdnum == -1) {
901: error("Invalid command.");
902: return (-1);
903: }
904:
905: /* Get arguments and parse flags */
906: *lflag = *pflag = *n_arg = 0;
907: *path1 = *path2 = NULL;
908: switch (cmdnum) {
909: case I_GET:
910: case I_PUT:
911: if (parse_getput_flags(&cp, pflag))
912: return(-1);
913: /* Get first pathname (mandatory) */
914: if (get_pathname(&cp, path1))
915: return(-1);
916: if (*path1 == NULL) {
917: error("You must specify at least one path after a "
918: "%s command.", cmd);
919: return(-1);
920: }
921: /* Try to get second pathname (optional) */
922: if (get_pathname(&cp, path2))
923: return(-1);
924: break;
925: case I_RENAME:
926: case I_SYMLINK:
927: if (get_pathname(&cp, path1))
928: return(-1);
929: if (get_pathname(&cp, path2))
930: return(-1);
931: if (!*path1 || !*path2) {
932: error("You must specify two paths after a %s "
933: "command.", cmd);
934: return(-1);
935: }
936: break;
937: case I_RM:
938: case I_MKDIR:
939: case I_RMDIR:
940: case I_CHDIR:
941: case I_LCHDIR:
942: case I_LMKDIR:
943: /* Get pathname (mandatory) */
944: if (get_pathname(&cp, path1))
945: return(-1);
946: if (*path1 == NULL) {
947: error("You must specify a path after a %s command.",
948: cmd);
949: return(-1);
950: }
951: break;
952: case I_LS:
953: if (parse_ls_flags(&cp, lflag))
954: return(-1);
955: /* Path is optional */
956: if (get_pathname(&cp, path1))
957: return(-1);
958: break;
959: case I_LLS:
960: case I_SHELL:
961: /* Uses the rest of the line */
962: break;
963: case I_LUMASK:
964: base = 8;
965: case I_CHMOD:
966: base = 8;
967: case I_CHOWN:
968: case I_CHGRP:
969: /* Get numeric arg (mandatory) */
1.93 ray 970: errno = 0;
1.44 djm 971: l = strtol(cp, &cp2, base);
972: if (cp2 == cp || ((l == LONG_MIN || l == LONG_MAX) &&
973: errno == ERANGE) || l < 0) {
974: error("You must supply a numeric argument "
975: "to the %s command.", cmd);
976: return(-1);
977: }
978: cp = cp2;
979: *n_arg = l;
980: if (cmdnum == I_LUMASK && strchr(WHITESPACE, *cp))
981: break;
982: if (cmdnum == I_LUMASK || !strchr(WHITESPACE, *cp)) {
983: error("You must supply a numeric argument "
984: "to the %s command.", cmd);
985: return(-1);
986: }
987: cp += strspn(cp, WHITESPACE);
988:
989: /* Get pathname (mandatory) */
990: if (get_pathname(&cp, path1))
991: return(-1);
992: if (*path1 == NULL) {
993: error("You must specify a path after a %s command.",
994: cmd);
995: return(-1);
996: }
997: break;
998: case I_QUIT:
999: case I_PWD:
1000: case I_LPWD:
1001: case I_HELP:
1002: case I_VERSION:
1003: case I_PROGRESS:
1004: break;
1005: default:
1006: fatal("Command not implemented");
1007: }
1008:
1009: *cpp = cp;
1010: return(cmdnum);
1011: }
1012:
1013: static int
1014: parse_dispatch_command(struct sftp_conn *conn, const char *cmd, char **pwd,
1015: int err_abort)
1016: {
1017: char *path1, *path2, *tmp;
1018: int pflag, lflag, iflag, cmdnum, i;
1019: unsigned long n_arg;
1020: Attrib a, *aa;
1021: char path_buf[MAXPATHLEN];
1022: int err = 0;
1023: glob_t g;
1024:
1025: path1 = path2 = NULL;
1026: cmdnum = parse_args(&cmd, &pflag, &lflag, &iflag, &n_arg,
1027: &path1, &path2);
1028:
1029: if (iflag != 0)
1030: err_abort = 0;
1031:
1032: memset(&g, 0, sizeof(g));
1033:
1034: /* Perform command */
1035: switch (cmdnum) {
1036: case 0:
1037: /* Blank line */
1038: break;
1039: case -1:
1040: /* Unrecognized command */
1041: err = -1;
1042: break;
1043: case I_GET:
1044: err = process_get(conn, path1, path2, *pwd, pflag);
1045: break;
1046: case I_PUT:
1047: err = process_put(conn, path1, path2, *pwd, pflag);
1048: break;
1049: case I_RENAME:
1050: path1 = make_absolute(path1, *pwd);
1051: path2 = make_absolute(path2, *pwd);
1052: err = do_rename(conn, path1, path2);
1053: break;
1054: case I_SYMLINK:
1055: path2 = make_absolute(path2, *pwd);
1056: err = do_symlink(conn, path1, path2);
1057: break;
1058: case I_RM:
1059: path1 = make_absolute(path1, *pwd);
1060: remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1.46 djm 1061: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1.44 djm 1062: printf("Removing %s\n", g.gl_pathv[i]);
1063: err = do_rm(conn, g.gl_pathv[i]);
1064: if (err != 0 && err_abort)
1065: break;
1066: }
1067: break;
1068: case I_MKDIR:
1069: path1 = make_absolute(path1, *pwd);
1070: attrib_clear(&a);
1071: a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
1072: a.perm = 0777;
1073: err = do_mkdir(conn, path1, &a);
1074: break;
1075: case I_RMDIR:
1076: path1 = make_absolute(path1, *pwd);
1077: err = do_rmdir(conn, path1);
1078: break;
1079: case I_CHDIR:
1080: path1 = make_absolute(path1, *pwd);
1081: if ((tmp = do_realpath(conn, path1)) == NULL) {
1082: err = 1;
1083: break;
1084: }
1085: if ((aa = do_stat(conn, tmp, 0)) == NULL) {
1086: xfree(tmp);
1087: err = 1;
1088: break;
1089: }
1090: if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) {
1091: error("Can't change directory: Can't check target");
1092: xfree(tmp);
1093: err = 1;
1094: break;
1095: }
1096: if (!S_ISDIR(aa->perm)) {
1097: error("Can't change directory: \"%s\" is not "
1098: "a directory", tmp);
1099: xfree(tmp);
1100: err = 1;
1101: break;
1102: }
1103: xfree(*pwd);
1104: *pwd = tmp;
1105: break;
1106: case I_LS:
1107: if (!path1) {
1108: do_globbed_ls(conn, *pwd, *pwd, lflag);
1109: break;
1110: }
1111:
1112: /* Strip pwd off beginning of non-absolute paths */
1113: tmp = NULL;
1114: if (*path1 != '/')
1115: tmp = *pwd;
1116:
1117: path1 = make_absolute(path1, *pwd);
1118: err = do_globbed_ls(conn, path1, tmp, lflag);
1119: break;
1120: case I_LCHDIR:
1121: if (chdir(path1) == -1) {
1122: error("Couldn't change local directory to "
1123: "\"%s\": %s", path1, strerror(errno));
1124: err = 1;
1125: }
1126: break;
1127: case I_LMKDIR:
1128: if (mkdir(path1, 0777) == -1) {
1129: error("Couldn't create local directory "
1130: "\"%s\": %s", path1, strerror(errno));
1131: err = 1;
1132: }
1133: break;
1134: case I_LLS:
1135: local_do_ls(cmd);
1136: break;
1137: case I_SHELL:
1138: local_do_shell(cmd);
1139: break;
1140: case I_LUMASK:
1141: umask(n_arg);
1142: printf("Local umask: %03lo\n", n_arg);
1143: break;
1144: case I_CHMOD:
1145: path1 = make_absolute(path1, *pwd);
1146: attrib_clear(&a);
1147: a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
1148: a.perm = n_arg;
1149: remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1.46 djm 1150: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1.44 djm 1151: printf("Changing mode on %s\n", g.gl_pathv[i]);
1152: err = do_setstat(conn, g.gl_pathv[i], &a);
1153: if (err != 0 && err_abort)
1154: break;
1155: }
1156: break;
1157: case I_CHOWN:
1158: case I_CHGRP:
1159: path1 = make_absolute(path1, *pwd);
1160: remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1.46 djm 1161: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1.44 djm 1162: if (!(aa = do_stat(conn, g.gl_pathv[i], 0))) {
1163: if (err != 0 && err_abort)
1164: break;
1165: else
1166: continue;
1167: }
1168: if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) {
1169: error("Can't get current ownership of "
1170: "remote file \"%s\"", g.gl_pathv[i]);
1171: if (err != 0 && err_abort)
1172: break;
1173: else
1174: continue;
1175: }
1176: aa->flags &= SSH2_FILEXFER_ATTR_UIDGID;
1177: if (cmdnum == I_CHOWN) {
1178: printf("Changing owner on %s\n", g.gl_pathv[i]);
1179: aa->uid = n_arg;
1180: } else {
1181: printf("Changing group on %s\n", g.gl_pathv[i]);
1182: aa->gid = n_arg;
1183: }
1184: err = do_setstat(conn, g.gl_pathv[i], aa);
1185: if (err != 0 && err_abort)
1186: break;
1187: }
1188: break;
1189: case I_PWD:
1190: printf("Remote working directory: %s\n", *pwd);
1191: break;
1192: case I_LPWD:
1193: if (!getcwd(path_buf, sizeof(path_buf))) {
1194: error("Couldn't get local cwd: %s", strerror(errno));
1195: err = -1;
1196: break;
1197: }
1198: printf("Local working directory: %s\n", path_buf);
1199: break;
1200: case I_QUIT:
1201: /* Processed below */
1202: break;
1203: case I_HELP:
1204: help();
1205: break;
1206: case I_VERSION:
1207: printf("SFTP protocol version %u\n", sftp_proto_version(conn));
1208: break;
1209: case I_PROGRESS:
1210: showprogress = !showprogress;
1211: if (showprogress)
1212: printf("Progress meter enabled\n");
1213: else
1214: printf("Progress meter disabled\n");
1215: break;
1216: default:
1217: fatal("%d is not implemented", cmdnum);
1218: }
1219:
1220: if (g.gl_pathc)
1221: globfree(&g);
1222: if (path1)
1223: xfree(path1);
1224: if (path2)
1225: xfree(path2);
1226:
1227: /* If an unignored error occurs in batch mode we should abort. */
1228: if (err_abort && err != 0)
1229: return (-1);
1230: else if (cmdnum == I_QUIT)
1231: return (1);
1232:
1233: return (0);
1234: }
1235:
1.57 djm 1236: static char *
1237: prompt(EditLine *el)
1238: {
1239: return ("sftp> ");
1240: }
1241:
1.44 djm 1242: int
1243: interactive_loop(int fd_in, int fd_out, char *file1, char *file2)
1244: {
1245: char *pwd;
1246: char *dir = NULL;
1247: char cmd[2048];
1248: struct sftp_conn *conn;
1.66 jaredy 1249: int err, interactive;
1.57 djm 1250: EditLine *el = NULL;
1251: History *hl = NULL;
1252: HistEvent hev;
1253: extern char *__progname;
1254:
1255: if (!batchmode && isatty(STDIN_FILENO)) {
1256: if ((el = el_init(__progname, stdin, stdout, stderr)) == NULL)
1257: fatal("Couldn't initialise editline");
1258: if ((hl = history_init()) == NULL)
1259: fatal("Couldn't initialise editline history");
1260: history(hl, &hev, H_SETSIZE, 100);
1261: el_set(el, EL_HIST, history, hl);
1262:
1263: el_set(el, EL_PROMPT, prompt);
1264: el_set(el, EL_EDITOR, "emacs");
1265: el_set(el, EL_TERMINAL, NULL);
1266: el_set(el, EL_SIGNAL, 1);
1267: el_source(el, NULL);
1268: }
1.44 djm 1269:
1270: conn = do_init(fd_in, fd_out, copy_buffer_len, num_requests);
1271: if (conn == NULL)
1272: fatal("Couldn't initialise connection to server");
1273:
1274: pwd = do_realpath(conn, ".");
1275: if (pwd == NULL)
1276: fatal("Need cwd");
1277:
1278: if (file1 != NULL) {
1279: dir = xstrdup(file1);
1280: dir = make_absolute(dir, pwd);
1281:
1282: if (remote_is_dir(conn, dir) && file2 == NULL) {
1283: printf("Changing to: %s\n", dir);
1284: snprintf(cmd, sizeof cmd, "cd \"%s\"", dir);
1.58 markus 1285: if (parse_dispatch_command(conn, cmd, &pwd, 1) != 0) {
1286: xfree(dir);
1287: xfree(pwd);
1.76 djm 1288: xfree(conn);
1.44 djm 1289: return (-1);
1.58 markus 1290: }
1.44 djm 1291: } else {
1292: if (file2 == NULL)
1293: snprintf(cmd, sizeof cmd, "get %s", dir);
1294: else
1295: snprintf(cmd, sizeof cmd, "get %s %s", dir,
1296: file2);
1297:
1298: err = parse_dispatch_command(conn, cmd, &pwd, 1);
1299: xfree(dir);
1300: xfree(pwd);
1.76 djm 1301: xfree(conn);
1.44 djm 1302: return (err);
1303: }
1304: xfree(dir);
1305: }
1306:
1307: setvbuf(stdout, NULL, _IOLBF, 0);
1308: setvbuf(infile, NULL, _IOLBF, 0);
1309:
1.66 jaredy 1310: interactive = !batchmode && isatty(STDIN_FILENO);
1.44 djm 1311: err = 0;
1312: for (;;) {
1313: char *cp;
1.57 djm 1314: const char *line;
1315: int count = 0;
1.44 djm 1316:
1.46 djm 1317: signal(SIGINT, SIG_IGN);
1318:
1.57 djm 1319: if (el == NULL) {
1.66 jaredy 1320: if (interactive)
1321: printf("sftp> ");
1.57 djm 1322: if (fgets(cmd, sizeof(cmd), infile) == NULL) {
1.66 jaredy 1323: if (interactive)
1324: printf("\n");
1.57 djm 1325: break;
1326: }
1.66 jaredy 1327: if (!interactive) { /* Echo command */
1328: printf("sftp> %s", cmd);
1329: if (strlen(cmd) > 0 &&
1330: cmd[strlen(cmd) - 1] != '\n')
1331: printf("\n");
1332: }
1.57 djm 1333: } else {
1.66 jaredy 1334: if ((line = el_gets(el, &count)) == NULL || count <= 0) {
1335: printf("\n");
1.57 djm 1336: break;
1.66 jaredy 1337: }
1.57 djm 1338: history(hl, &hev, H_ENTER, line);
1339: if (strlcpy(cmd, line, sizeof(cmd)) >= sizeof(cmd)) {
1340: fprintf(stderr, "Error: input line too long\n");
1341: continue;
1342: }
1.44 djm 1343: }
1344:
1345: cp = strrchr(cmd, '\n');
1346: if (cp)
1347: *cp = '\0';
1348:
1.46 djm 1349: /* Handle user interrupts gracefully during commands */
1350: interrupted = 0;
1351: signal(SIGINT, cmd_interrupt);
1352:
1.44 djm 1353: err = parse_dispatch_command(conn, cmd, &pwd, batchmode);
1354: if (err != 0)
1355: break;
1356: }
1357: xfree(pwd);
1.76 djm 1358: xfree(conn);
1.66 jaredy 1359:
1360: if (el != NULL)
1361: el_end(el);
1.44 djm 1362:
1363: /* err == 1 signifies normal "quit" exit */
1364: return (err >= 0 ? 0 : -1);
1365: }
1.34 fgsch 1366:
1.18 itojun 1367: static void
1.36 djm 1368: connect_to_server(char *path, char **args, int *in, int *out)
1.1 djm 1369: {
1370: int c_in, c_out;
1.30 deraadt 1371:
1.1 djm 1372: int inout[2];
1.30 deraadt 1373:
1.1 djm 1374: if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
1375: fatal("socketpair: %s", strerror(errno));
1376: *in = *out = inout[0];
1377: c_in = c_out = inout[1];
1378:
1.36 djm 1379: if ((sshpid = fork()) == -1)
1.1 djm 1380: fatal("fork: %s", strerror(errno));
1.36 djm 1381: else if (sshpid == 0) {
1.1 djm 1382: if ((dup2(c_in, STDIN_FILENO) == -1) ||
1383: (dup2(c_out, STDOUT_FILENO) == -1)) {
1384: fprintf(stderr, "dup2: %s\n", strerror(errno));
1.47 djm 1385: _exit(1);
1.1 djm 1386: }
1387: close(*in);
1388: close(*out);
1389: close(c_in);
1390: close(c_out);
1.46 djm 1391:
1392: /*
1393: * The underlying ssh is in the same process group, so we must
1.56 deraadt 1394: * ignore SIGINT if we want to gracefully abort commands,
1395: * otherwise the signal will make it to the ssh process and
1.46 djm 1396: * kill it too
1397: */
1398: signal(SIGINT, SIG_IGN);
1.49 dtucker 1399: execvp(path, args);
1.23 djm 1400: fprintf(stderr, "exec: %s: %s\n", path, strerror(errno));
1.47 djm 1401: _exit(1);
1.1 djm 1402: }
1403:
1.36 djm 1404: signal(SIGTERM, killchild);
1405: signal(SIGINT, killchild);
1406: signal(SIGHUP, killchild);
1.1 djm 1407: close(c_in);
1408: close(c_out);
1409: }
1410:
1.18 itojun 1411: static void
1.1 djm 1412: usage(void)
1413: {
1.25 mpech 1414: extern char *__progname;
1.27 markus 1415:
1.19 stevesk 1416: fprintf(stderr,
1.38 jmc 1417: "usage: %s [-1Cv] [-B buffer_size] [-b batchfile] [-F ssh_config]\n"
1418: " [-o ssh_option] [-P sftp_server_path] [-R num_requests]\n"
1419: " [-S program] [-s subsystem | sftp_server] host\n"
1420: " %s [[user@]host[:file [file]]]\n"
1421: " %s [[user@]host[:dir[/]]]\n"
1422: " %s -b batchfile [user@]host\n", __progname, __progname, __progname, __progname);
1.1 djm 1423: exit(1);
1424: }
1425:
1.2 stevesk 1426: int
1.1 djm 1427: main(int argc, char **argv)
1428: {
1.33 djm 1429: int in, out, ch, err;
1.48 pedro 1430: char *host, *userhost, *cp, *file2 = NULL;
1.17 mouring 1431: int debug_level = 0, sshver = 2;
1432: char *file1 = NULL, *sftp_server = NULL;
1.23 djm 1433: char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
1.17 mouring 1434: LogLevel ll = SYSLOG_LEVEL_INFO;
1435: arglist args;
1.3 djm 1436: extern int optind;
1437: extern char *optarg;
1.67 djm 1438:
1439: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
1440: sanitise_stdfd();
1.1 djm 1441:
1.70 djm 1442: memset(&args, '\0', sizeof(args));
1.17 mouring 1443: args.list = NULL;
1.80 djm 1444: addargs(&args, "%s", ssh_program);
1.17 mouring 1445: addargs(&args, "-oForwardX11 no");
1446: addargs(&args, "-oForwardAgent no");
1.69 reyk 1447: addargs(&args, "-oPermitLocalCommand no");
1.21 stevesk 1448: addargs(&args, "-oClearAllForwardings yes");
1.40 djm 1449:
1.17 mouring 1450: ll = SYSLOG_LEVEL_INFO;
1.40 djm 1451: infile = stdin;
1.3 djm 1452:
1.26 djm 1453: while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) {
1.3 djm 1454: switch (ch) {
1455: case 'C':
1.17 mouring 1456: addargs(&args, "-C");
1.3 djm 1457: break;
1458: case 'v':
1.17 mouring 1459: if (debug_level < 3) {
1460: addargs(&args, "-v");
1461: ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
1462: }
1463: debug_level++;
1.3 djm 1464: break;
1.19 stevesk 1465: case 'F':
1.3 djm 1466: case 'o':
1.19 stevesk 1467: addargs(&args, "-%c%s", ch, optarg);
1.7 markus 1468: break;
1469: case '1':
1.17 mouring 1470: sshver = 1;
1.7 markus 1471: if (sftp_server == NULL)
1472: sftp_server = _PATH_SFTP_SERVER;
1473: break;
1474: case 's':
1475: sftp_server = optarg;
1476: break;
1477: case 'S':
1478: ssh_program = optarg;
1.70 djm 1479: replacearg(&args, 0, "%s", ssh_program);
1.3 djm 1480: break;
1.10 deraadt 1481: case 'b':
1.39 djm 1482: if (batchmode)
1483: fatal("Batch file already specified.");
1484:
1485: /* Allow "-" as stdin */
1.56 deraadt 1486: if (strcmp(optarg, "-") != 0 &&
1.65 djm 1487: (infile = fopen(optarg, "r")) == NULL)
1.39 djm 1488: fatal("%s (%s).", strerror(errno), optarg);
1.34 fgsch 1489: showprogress = 0;
1.39 djm 1490: batchmode = 1;
1.62 djm 1491: addargs(&args, "-obatchmode yes");
1.10 deraadt 1492: break;
1.23 djm 1493: case 'P':
1494: sftp_direct = optarg;
1.24 djm 1495: break;
1496: case 'B':
1497: copy_buffer_len = strtol(optarg, &cp, 10);
1498: if (copy_buffer_len == 0 || *cp != '\0')
1499: fatal("Invalid buffer size \"%s\"", optarg);
1.26 djm 1500: break;
1501: case 'R':
1502: num_requests = strtol(optarg, &cp, 10);
1503: if (num_requests == 0 || *cp != '\0')
1.27 markus 1504: fatal("Invalid number of requests \"%s\"",
1.26 djm 1505: optarg);
1.23 djm 1506: break;
1.3 djm 1507: case 'h':
1508: default:
1.1 djm 1509: usage();
1510: }
1511: }
1.45 djm 1512:
1513: if (!isatty(STDERR_FILENO))
1514: showprogress = 0;
1.1 djm 1515:
1.29 markus 1516: log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
1517:
1.23 djm 1518: if (sftp_direct == NULL) {
1519: if (optind == argc || argc > (optind + 2))
1520: usage();
1521:
1522: userhost = xstrdup(argv[optind]);
1523: file2 = argv[optind+1];
1.1 djm 1524:
1.32 markus 1525: if ((host = strrchr(userhost, '@')) == NULL)
1.23 djm 1526: host = userhost;
1527: else {
1528: *host++ = '\0';
1529: if (!userhost[0]) {
1530: fprintf(stderr, "Missing username\n");
1531: usage();
1532: }
1.95 stevesk 1533: addargs(&args, "-l%s", userhost);
1.41 djm 1534: }
1535:
1536: if ((cp = colon(host)) != NULL) {
1537: *cp++ = '\0';
1538: file1 = cp;
1.23 djm 1539: }
1.3 djm 1540:
1.23 djm 1541: host = cleanhostname(host);
1542: if (!*host) {
1543: fprintf(stderr, "Missing hostname\n");
1.1 djm 1544: usage();
1545: }
1546:
1.23 djm 1547: addargs(&args, "-oProtocol %d", sshver);
1548:
1549: /* no subsystem if the server-spec contains a '/' */
1550: if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
1551: addargs(&args, "-s");
1552:
1553: addargs(&args, "%s", host);
1.27 markus 1554: addargs(&args, "%s", (sftp_server != NULL ?
1.23 djm 1555: sftp_server : "sftp"));
1556:
1.39 djm 1557: if (!batchmode)
1558: fprintf(stderr, "Connecting to %s...\n", host);
1.36 djm 1559: connect_to_server(ssh_program, args.list, &in, &out);
1.23 djm 1560: } else {
1561: args.list = NULL;
1562: addargs(&args, "sftp-server");
1563:
1.39 djm 1564: if (!batchmode)
1565: fprintf(stderr, "Attaching to %s...\n", sftp_direct);
1.36 djm 1566: connect_to_server(sftp_direct, args.list, &in, &out);
1.1 djm 1567: }
1.70 djm 1568: freeargs(&args);
1.1 djm 1569:
1.33 djm 1570: err = interactive_loop(in, out, file1, file2);
1.1 djm 1571:
1572: close(in);
1573: close(out);
1.39 djm 1574: if (batchmode)
1.10 deraadt 1575: fclose(infile);
1.1 djm 1576:
1.28 markus 1577: while (waitpid(sshpid, NULL, 0) == -1)
1578: if (errno != EINTR)
1579: fatal("Couldn't wait for ssh process: %s",
1580: strerror(errno));
1.1 djm 1581:
1.33 djm 1582: exit(err == 0 ? 0 : 1);
1.1 djm 1583: }