Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.95
1.95 ! markus 1: /* $OpenBSD: sftp-client.c,v 1.94 2010/12/04 00:18:01 djm Exp $ */
1.1 djm 2: /*
1.46 djm 3: * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
1.1 djm 4: *
1.46 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: *
1.46 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:
18: /* XXX: memleaks */
19: /* XXX: signed vs unsigned */
1.23 djm 20: /* XXX: remove all logging, only return status codes */
1.1 djm 21: /* XXX: copy between two remote sites */
22:
1.74 deraadt 23: #include <sys/types.h>
1.93 djm 24: #include <sys/poll.h>
1.21 djm 25: #include <sys/queue.h>
1.60 stevesk 26: #include <sys/stat.h>
1.71 stevesk 27: #include <sys/time.h>
1.72 stevesk 28: #include <sys/param.h>
1.82 djm 29: #include <sys/statvfs.h>
1.74 deraadt 30: #include <sys/uio.h>
1.66 stevesk 31:
1.89 djm 32: #include <dirent.h>
1.67 stevesk 33: #include <errno.h>
1.66 stevesk 34: #include <fcntl.h>
1.70 stevesk 35: #include <signal.h>
1.87 dtucker 36: #include <stdarg.h>
1.73 stevesk 37: #include <stdio.h>
1.69 stevesk 38: #include <string.h>
1.68 stevesk 39: #include <unistd.h>
1.1 djm 40:
1.74 deraadt 41: #include "xmalloc.h"
1.1 djm 42: #include "buffer.h"
43: #include "log.h"
44: #include "atomicio.h"
1.39 fgsch 45: #include "progressmeter.h"
1.64 djm 46: #include "misc.h"
1.1 djm 47:
48: #include "sftp.h"
49: #include "sftp-common.h"
50: #include "sftp-client.h"
51:
1.49 djm 52: extern volatile sig_atomic_t interrupted;
1.39 fgsch 53: extern int showprogress;
54:
1.59 david 55: /* Minimum amount of data to read at a time */
1.21 djm 56: #define MIN_READ_SIZE 512
57:
1.89 djm 58: /* Maximum depth to descend in directory trees */
59: #define MAX_DIR_DEPTH 64
60:
1.23 djm 61: struct sftp_conn {
62: int fd_in;
63: int fd_out;
64: u_int transfer_buflen;
65: u_int num_requests;
66: u_int version;
67: u_int msg_id;
1.82 djm 68: #define SFTP_EXT_POSIX_RENAME 0x00000001
69: #define SFTP_EXT_STATVFS 0x00000002
70: #define SFTP_EXT_FSTATVFS 0x00000004
1.94 djm 71: #define SFTP_EXT_HARDLINK 0x00000008
1.81 djm 72: u_int exts;
1.93 djm 73: u_int64_t limit_kbps;
74: struct bwlimit bwlimit_in, bwlimit_out;
1.23 djm 75: };
1.4 djm 76:
1.88 djm 77: static char *
1.93 djm 78: get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
79: const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
80:
81: /* ARGSUSED */
82: static int
83: sftpio(void *_bwlimit, size_t amount)
84: {
85: struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
86:
87: bandwidth_limit(bwlimit, amount);
88: return 0;
89: }
1.88 djm 90:
1.17 itojun 91: static void
1.93 djm 92: send_msg(struct sftp_conn *conn, Buffer *m)
1.1 djm 93: {
1.40 djm 94: u_char mlen[4];
1.65 djm 95: struct iovec iov[2];
1.40 djm 96:
1.58 djm 97: if (buffer_len(m) > SFTP_MAX_MSG_LENGTH)
1.40 djm 98: fatal("Outbound message too long %u", buffer_len(m));
99:
100: /* Send length first */
1.64 djm 101: put_u32(mlen, buffer_len(m));
1.65 djm 102: iov[0].iov_base = mlen;
103: iov[0].iov_len = sizeof(mlen);
104: iov[1].iov_base = buffer_ptr(m);
105: iov[1].iov_len = buffer_len(m);
1.74 deraadt 106:
1.93 djm 107: if (atomiciov6(writev, conn->fd_out, iov, 2,
108: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
109: buffer_len(m) + sizeof(mlen))
1.1 djm 110: fatal("Couldn't send packet: %s", strerror(errno));
111:
1.40 djm 112: buffer_clear(m);
1.1 djm 113: }
114:
1.17 itojun 115: static void
1.93 djm 116: get_msg(struct sftp_conn *conn, Buffer *m)
1.1 djm 117: {
1.40 djm 118: u_int msg_len;
1.1 djm 119:
1.40 djm 120: buffer_append_space(m, 4);
1.93 djm 121: if (atomicio6(read, conn->fd_in, buffer_ptr(m), 4,
122: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) {
1.54 avsm 123: if (errno == EPIPE)
124: fatal("Connection closed");
125: else
126: fatal("Couldn't read packet: %s", strerror(errno));
127: }
1.1 djm 128:
1.40 djm 129: msg_len = buffer_get_int(m);
1.58 djm 130: if (msg_len > SFTP_MAX_MSG_LENGTH)
1.33 deraadt 131: fatal("Received message too long %u", msg_len);
1.1 djm 132:
1.40 djm 133: buffer_append_space(m, msg_len);
1.93 djm 134: if (atomicio6(read, conn->fd_in, buffer_ptr(m), msg_len,
135: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
136: != msg_len) {
1.54 avsm 137: if (errno == EPIPE)
138: fatal("Connection closed");
139: else
140: fatal("Read packet: %s", strerror(errno));
141: }
1.1 djm 142: }
143:
1.17 itojun 144: static void
1.93 djm 145: send_string_request(struct sftp_conn *conn, u_int id, u_int code, char *s,
1.1 djm 146: u_int len)
147: {
148: Buffer msg;
149:
150: buffer_init(&msg);
151: buffer_put_char(&msg, code);
152: buffer_put_int(&msg, id);
153: buffer_put_string(&msg, s, len);
1.93 djm 154: send_msg(conn, &msg);
155: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.1 djm 156: buffer_free(&msg);
157: }
158:
1.17 itojun 159: static void
1.93 djm 160: send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
161: char *s, u_int len, Attrib *a)
1.1 djm 162: {
163: Buffer msg;
164:
165: buffer_init(&msg);
166: buffer_put_char(&msg, code);
167: buffer_put_int(&msg, id);
168: buffer_put_string(&msg, s, len);
169: encode_attrib(&msg, a);
1.93 djm 170: send_msg(conn, &msg);
171: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.1 djm 172: buffer_free(&msg);
173: }
174:
1.17 itojun 175: static u_int
1.93 djm 176: get_status(struct sftp_conn *conn, u_int expected_id)
1.1 djm 177: {
178: Buffer msg;
179: u_int type, id, status;
180:
181: buffer_init(&msg);
1.93 djm 182: get_msg(conn, &msg);
1.1 djm 183: type = buffer_get_char(&msg);
184: id = buffer_get_int(&msg);
185:
186: if (id != expected_id)
1.33 deraadt 187: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 188: if (type != SSH2_FXP_STATUS)
1.33 deraadt 189: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 190: SSH2_FXP_STATUS, type);
191:
192: status = buffer_get_int(&msg);
193: buffer_free(&msg);
194:
1.33 deraadt 195: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 196:
1.93 djm 197: return status;
1.1 djm 198: }
199:
1.17 itojun 200: static char *
1.93 djm 201: get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
202: const char *errfmt, ...)
1.1 djm 203: {
204: Buffer msg;
205: u_int type, id;
1.88 djm 206: char *handle, errmsg[256];
207: va_list args;
208: int status;
209:
210: va_start(args, errfmt);
211: if (errfmt != NULL)
212: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
213: va_end(args);
1.1 djm 214:
215: buffer_init(&msg);
1.93 djm 216: get_msg(conn, &msg);
1.1 djm 217: type = buffer_get_char(&msg);
218: id = buffer_get_int(&msg);
219:
220: if (id != expected_id)
1.88 djm 221: fatal("%s: ID mismatch (%u != %u)",
222: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 223: if (type == SSH2_FXP_STATUS) {
1.88 djm 224: status = buffer_get_int(&msg);
225: if (errfmt != NULL)
226: error("%s: %s", errmsg, fx2txt(status));
1.52 markus 227: buffer_free(&msg);
1.1 djm 228: return(NULL);
229: } else if (type != SSH2_FXP_HANDLE)
1.88 djm 230: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
231: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 232:
233: handle = buffer_get_string(&msg, len);
234: buffer_free(&msg);
235:
236: return(handle);
237: }
238:
1.17 itojun 239: static Attrib *
1.93 djm 240: get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
1.1 djm 241: {
242: Buffer msg;
243: u_int type, id;
244: Attrib *a;
245:
246: buffer_init(&msg);
1.93 djm 247: get_msg(conn, &msg);
1.1 djm 248:
249: type = buffer_get_char(&msg);
250: id = buffer_get_int(&msg);
251:
1.33 deraadt 252: debug3("Received stat reply T:%u I:%u", type, id);
1.1 djm 253: if (id != expected_id)
1.33 deraadt 254: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 255: if (type == SSH2_FXP_STATUS) {
256: int status = buffer_get_int(&msg);
257:
1.14 djm 258: if (quiet)
259: debug("Couldn't stat remote file: %s", fx2txt(status));
260: else
261: error("Couldn't stat remote file: %s", fx2txt(status));
1.52 markus 262: buffer_free(&msg);
1.1 djm 263: return(NULL);
264: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 265: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 266: SSH2_FXP_ATTRS, type);
267: }
268: a = decode_attrib(&msg);
269: buffer_free(&msg);
270:
271: return(a);
272: }
273:
1.82 djm 274: static int
1.93 djm 275: get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
276: u_int expected_id, int quiet)
1.82 djm 277: {
278: Buffer msg;
279: u_int type, id, flag;
280:
281: buffer_init(&msg);
1.93 djm 282: get_msg(conn, &msg);
1.82 djm 283:
284: type = buffer_get_char(&msg);
285: id = buffer_get_int(&msg);
286:
287: debug3("Received statvfs reply T:%u I:%u", type, id);
288: if (id != expected_id)
289: fatal("ID mismatch (%u != %u)", id, expected_id);
290: if (type == SSH2_FXP_STATUS) {
291: int status = buffer_get_int(&msg);
292:
293: if (quiet)
294: debug("Couldn't statvfs: %s", fx2txt(status));
295: else
296: error("Couldn't statvfs: %s", fx2txt(status));
297: buffer_free(&msg);
298: return -1;
299: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
300: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
301: SSH2_FXP_EXTENDED_REPLY, type);
302: }
303:
304: bzero(st, sizeof(*st));
1.84 dtucker 305: st->f_bsize = buffer_get_int64(&msg);
306: st->f_frsize = buffer_get_int64(&msg);
1.82 djm 307: st->f_blocks = buffer_get_int64(&msg);
308: st->f_bfree = buffer_get_int64(&msg);
309: st->f_bavail = buffer_get_int64(&msg);
310: st->f_files = buffer_get_int64(&msg);
311: st->f_ffree = buffer_get_int64(&msg);
312: st->f_favail = buffer_get_int64(&msg);
1.83 djm 313: st->f_fsid = buffer_get_int64(&msg);
1.84 dtucker 314: flag = buffer_get_int64(&msg);
315: st->f_namemax = buffer_get_int64(&msg);
1.82 djm 316:
317: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
318: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
319:
320: buffer_free(&msg);
321:
322: return 0;
323: }
324:
1.23 djm 325: struct sftp_conn *
1.93 djm 326: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
327: u_int64_t limit_kbps)
1.1 djm 328: {
1.93 djm 329: u_int type;
1.1 djm 330: Buffer msg;
1.23 djm 331: struct sftp_conn *ret;
1.1 djm 332:
1.93 djm 333: ret = xmalloc(sizeof(*ret));
334: ret->fd_in = fd_in;
335: ret->fd_out = fd_out;
336: ret->transfer_buflen = transfer_buflen;
337: ret->num_requests = num_requests;
338: ret->exts = 0;
339: ret->limit_kbps = 0;
340:
1.1 djm 341: buffer_init(&msg);
342: buffer_put_char(&msg, SSH2_FXP_INIT);
343: buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
1.93 djm 344: send_msg(ret, &msg);
1.1 djm 345:
346: buffer_clear(&msg);
347:
1.93 djm 348: get_msg(ret, &msg);
1.1 djm 349:
1.3 stevesk 350: /* Expecting a VERSION reply */
1.1 djm 351: if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) {
1.33 deraadt 352: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 353: type);
354: buffer_free(&msg);
1.23 djm 355: return(NULL);
1.1 djm 356: }
1.93 djm 357: ret->version = buffer_get_int(&msg);
1.1 djm 358:
1.93 djm 359: debug2("Remote version: %u", ret->version);
1.1 djm 360:
361: /* Check for extensions */
362: while (buffer_len(&msg) > 0) {
363: char *name = buffer_get_string(&msg, NULL);
364: char *value = buffer_get_string(&msg, NULL);
1.85 djm 365: int known = 0;
1.1 djm 366:
1.82 djm 367: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.85 djm 368: strcmp(value, "1") == 0) {
1.93 djm 369: ret->exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 370: known = 1;
371: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
372: strcmp(value, "2") == 0) {
1.93 djm 373: ret->exts |= SFTP_EXT_STATVFS;
1.85 djm 374: known = 1;
1.94 djm 375: } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
1.85 djm 376: strcmp(value, "2") == 0) {
1.93 djm 377: ret->exts |= SFTP_EXT_FSTATVFS;
1.85 djm 378: known = 1;
1.94 djm 379: } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
380: strcmp(value, "1") == 0) {
381: ret->exts |= SFTP_EXT_HARDLINK;
382: known = 1;
1.85 djm 383: }
384: if (known) {
385: debug2("Server supports extension \"%s\" revision %s",
386: name, value);
387: } else {
388: debug2("Unrecognised server extension \"%s\"", name);
389: }
1.1 djm 390: xfree(name);
391: xfree(value);
392: }
393:
394: buffer_free(&msg);
1.11 djm 395:
1.23 djm 396: /* Some filexfer v.0 servers don't support large packets */
1.93 djm 397: if (ret->version == 0)
1.29 markus 398: ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
1.23 djm 399:
1.93 djm 400: ret->limit_kbps = limit_kbps;
401: if (ret->limit_kbps > 0) {
402: bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
403: ret->transfer_buflen);
404: bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
405: ret->transfer_buflen);
406: }
407:
408: return ret;
1.23 djm 409: }
410:
411: u_int
412: sftp_proto_version(struct sftp_conn *conn)
413: {
1.93 djm 414: return conn->version;
1.1 djm 415: }
416:
417: int
1.23 djm 418: do_close(struct sftp_conn *conn, char *handle, u_int handle_len)
1.1 djm 419: {
420: u_int id, status;
421: Buffer msg;
422:
423: buffer_init(&msg);
424:
1.23 djm 425: id = conn->msg_id++;
1.1 djm 426: buffer_put_char(&msg, SSH2_FXP_CLOSE);
427: buffer_put_int(&msg, id);
428: buffer_put_string(&msg, handle, handle_len);
1.93 djm 429: send_msg(conn, &msg);
1.33 deraadt 430: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 431:
1.93 djm 432: status = get_status(conn, id);
1.1 djm 433: if (status != SSH2_FX_OK)
434: error("Couldn't close file: %s", fx2txt(status));
435:
436: buffer_free(&msg);
437:
1.93 djm 438: return status;
1.1 djm 439: }
440:
1.12 djm 441:
1.17 itojun 442: static int
1.23 djm 443: do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
1.12 djm 444: SFTP_DIRENT ***dir)
1.1 djm 445: {
446: Buffer msg;
1.55 djm 447: u_int count, type, id, handle_len, i, expected_id, ents = 0;
1.1 djm 448: char *handle;
449:
1.23 djm 450: id = conn->msg_id++;
1.1 djm 451:
452: buffer_init(&msg);
453: buffer_put_char(&msg, SSH2_FXP_OPENDIR);
454: buffer_put_int(&msg, id);
455: buffer_put_cstring(&msg, path);
1.93 djm 456: send_msg(conn, &msg);
1.1 djm 457:
458: buffer_clear(&msg);
459:
1.93 djm 460: handle = get_handle(conn, id, &handle_len,
1.88 djm 461: "remote readdir(\"%s\")", path);
1.1 djm 462: if (handle == NULL)
1.93 djm 463: return -1;
1.1 djm 464:
1.12 djm 465: if (dir) {
466: ents = 0;
467: *dir = xmalloc(sizeof(**dir));
468: (*dir)[0] = NULL;
469: }
470:
1.49 djm 471: for (; !interrupted;) {
1.23 djm 472: id = expected_id = conn->msg_id++;
1.1 djm 473:
1.33 deraadt 474: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 475:
476: buffer_clear(&msg);
477: buffer_put_char(&msg, SSH2_FXP_READDIR);
478: buffer_put_int(&msg, id);
479: buffer_put_string(&msg, handle, handle_len);
1.93 djm 480: send_msg(conn, &msg);
1.1 djm 481:
482: buffer_clear(&msg);
483:
1.93 djm 484: get_msg(conn, &msg);
1.1 djm 485:
486: type = buffer_get_char(&msg);
487: id = buffer_get_int(&msg);
488:
1.33 deraadt 489: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 490:
491: if (id != expected_id)
1.33 deraadt 492: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 493:
494: if (type == SSH2_FXP_STATUS) {
495: int status = buffer_get_int(&msg);
496:
497: debug3("Received SSH2_FXP_STATUS %d", status);
498:
499: if (status == SSH2_FX_EOF) {
500: break;
501: } else {
502: error("Couldn't read directory: %s",
503: fx2txt(status));
1.23 djm 504: do_close(conn, handle, handle_len);
1.42 markus 505: xfree(handle);
1.9 djm 506: return(status);
1.1 djm 507: }
508: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 509: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 510: SSH2_FXP_NAME, type);
511:
512: count = buffer_get_int(&msg);
1.7 markus 513: if (count == 0)
514: break;
1.8 stevesk 515: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 516: for (i = 0; i < count; i++) {
1.1 djm 517: char *filename, *longname;
518: Attrib *a;
519:
520: filename = buffer_get_string(&msg, NULL);
521: longname = buffer_get_string(&msg, NULL);
522: a = decode_attrib(&msg);
523:
1.12 djm 524: if (printflag)
525: printf("%s\n", longname);
526:
1.89 djm 527: /*
528: * Directory entries should never contain '/'
529: * These can be used to attack recursive ops
530: * (e.g. send '../../../../etc/passwd')
531: */
532: if (strchr(filename, '/') != NULL) {
533: error("Server sent suspect path \"%s\" "
534: "during readdir of \"%s\"", filename, path);
535: goto next;
536: }
537:
1.12 djm 538: if (dir) {
1.62 djm 539: *dir = xrealloc(*dir, ents + 2, sizeof(**dir));
1.12 djm 540: (*dir)[ents] = xmalloc(sizeof(***dir));
541: (*dir)[ents]->filename = xstrdup(filename);
542: (*dir)[ents]->longname = xstrdup(longname);
543: memcpy(&(*dir)[ents]->a, a, sizeof(*a));
544: (*dir)[++ents] = NULL;
545: }
1.89 djm 546: next:
1.1 djm 547: xfree(filename);
548: xfree(longname);
549: }
550: }
551:
552: buffer_free(&msg);
1.23 djm 553: do_close(conn, handle, handle_len);
1.1 djm 554: xfree(handle);
555:
1.49 djm 556: /* Don't return partial matches on interrupt */
557: if (interrupted && dir != NULL && *dir != NULL) {
558: free_sftp_dirents(*dir);
559: *dir = xmalloc(sizeof(**dir));
560: **dir = NULL;
561: }
562:
1.93 djm 563: return 0;
1.12 djm 564: }
565:
566: int
1.23 djm 567: do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir)
1.12 djm 568: {
1.23 djm 569: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 570: }
571:
572: void free_sftp_dirents(SFTP_DIRENT **s)
573: {
574: int i;
1.19 deraadt 575:
576: for (i = 0; s[i]; i++) {
1.12 djm 577: xfree(s[i]->filename);
578: xfree(s[i]->longname);
579: xfree(s[i]);
580: }
581: xfree(s);
582: }
583:
584: int
1.23 djm 585: do_rm(struct sftp_conn *conn, char *path)
1.1 djm 586: {
587: u_int status, id;
588:
589: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
590:
1.23 djm 591: id = conn->msg_id++;
1.93 djm 592: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
593: status = get_status(conn, id);
1.1 djm 594: if (status != SSH2_FX_OK)
595: error("Couldn't delete file: %s", fx2txt(status));
596: return(status);
597: }
598:
599: int
1.89 djm 600: do_mkdir(struct sftp_conn *conn, char *path, Attrib *a, int printflag)
1.1 djm 601: {
602: u_int status, id;
603:
1.23 djm 604: id = conn->msg_id++;
1.93 djm 605: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 606: strlen(path), a);
607:
1.93 djm 608: status = get_status(conn, id);
1.89 djm 609: if (status != SSH2_FX_OK && printflag)
1.1 djm 610: error("Couldn't create directory: %s", fx2txt(status));
611:
612: return(status);
613: }
614:
615: int
1.23 djm 616: do_rmdir(struct sftp_conn *conn, char *path)
1.1 djm 617: {
618: u_int status, id;
619:
1.23 djm 620: id = conn->msg_id++;
1.93 djm 621: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 622: strlen(path));
1.1 djm 623:
1.93 djm 624: status = get_status(conn, id);
1.1 djm 625: if (status != SSH2_FX_OK)
626: error("Couldn't remove directory: %s", fx2txt(status));
627:
628: return(status);
629: }
630:
631: Attrib *
1.23 djm 632: do_stat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 633: {
634: u_int id;
635:
1.23 djm 636: id = conn->msg_id++;
637:
1.93 djm 638: send_string_request(conn, id,
1.28 markus 639: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 640: path, strlen(path));
641:
1.93 djm 642: return(get_decode_stat(conn, id, quiet));
1.1 djm 643: }
644:
645: Attrib *
1.23 djm 646: do_lstat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 647: {
648: u_int id;
649:
1.23 djm 650: if (conn->version == 0) {
651: if (quiet)
652: debug("Server version does not support lstat operation");
653: else
1.43 itojun 654: logit("Server version does not support lstat operation");
1.30 markus 655: return(do_stat(conn, path, quiet));
1.23 djm 656: }
657:
658: id = conn->msg_id++;
1.93 djm 659: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 660: strlen(path));
661:
1.93 djm 662: return(get_decode_stat(conn, id, quiet));
1.1 djm 663: }
664:
1.78 chl 665: #ifdef notyet
1.1 djm 666: Attrib *
1.23 djm 667: do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet)
1.1 djm 668: {
669: u_int id;
670:
1.23 djm 671: id = conn->msg_id++;
1.93 djm 672: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 673: handle_len);
674:
1.93 djm 675: return(get_decode_stat(conn, id, quiet));
1.1 djm 676: }
1.78 chl 677: #endif
1.1 djm 678:
679: int
1.23 djm 680: do_setstat(struct sftp_conn *conn, char *path, Attrib *a)
1.1 djm 681: {
682: u_int status, id;
683:
1.23 djm 684: id = conn->msg_id++;
1.93 djm 685: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 686: strlen(path), a);
687:
1.93 djm 688: status = get_status(conn, id);
1.1 djm 689: if (status != SSH2_FX_OK)
690: error("Couldn't setstat on \"%s\": %s", path,
691: fx2txt(status));
692:
693: return(status);
694: }
695:
696: int
1.23 djm 697: do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
1.1 djm 698: Attrib *a)
699: {
700: u_int status, id;
701:
1.23 djm 702: id = conn->msg_id++;
1.93 djm 703: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 704: handle_len, a);
705:
1.93 djm 706: status = get_status(conn, id);
1.1 djm 707: if (status != SSH2_FX_OK)
708: error("Couldn't fsetstat: %s", fx2txt(status));
709:
710: return(status);
711: }
712:
713: char *
1.23 djm 714: do_realpath(struct sftp_conn *conn, char *path)
1.1 djm 715: {
716: Buffer msg;
717: u_int type, expected_id, count, id;
718: char *filename, *longname;
719: Attrib *a;
720:
1.23 djm 721: expected_id = id = conn->msg_id++;
1.93 djm 722: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 723: strlen(path));
1.1 djm 724:
725: buffer_init(&msg);
726:
1.93 djm 727: get_msg(conn, &msg);
1.1 djm 728: type = buffer_get_char(&msg);
729: id = buffer_get_int(&msg);
730:
731: if (id != expected_id)
1.33 deraadt 732: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 733:
734: if (type == SSH2_FXP_STATUS) {
735: u_int status = buffer_get_int(&msg);
736:
737: error("Couldn't canonicalise: %s", fx2txt(status));
1.91 djm 738: buffer_free(&msg);
739: return NULL;
1.1 djm 740: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 741: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 742: SSH2_FXP_NAME, type);
743:
744: count = buffer_get_int(&msg);
745: if (count != 1)
746: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
747:
748: filename = buffer_get_string(&msg, NULL);
749: longname = buffer_get_string(&msg, NULL);
750: a = decode_attrib(&msg);
751:
752: debug3("SSH_FXP_REALPATH %s -> %s", path, filename);
753:
754: xfree(longname);
755:
756: buffer_free(&msg);
757:
758: return(filename);
759: }
760:
761: int
1.23 djm 762: do_rename(struct sftp_conn *conn, char *oldpath, char *newpath)
1.1 djm 763: {
764: Buffer msg;
765: u_int status, id;
766:
767: buffer_init(&msg);
768:
769: /* Send rename request */
1.23 djm 770: id = conn->msg_id++;
1.81 djm 771: if ((conn->exts & SFTP_EXT_POSIX_RENAME)) {
772: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
773: buffer_put_int(&msg, id);
774: buffer_put_cstring(&msg, "posix-rename@openssh.com");
775: } else {
776: buffer_put_char(&msg, SSH2_FXP_RENAME);
777: buffer_put_int(&msg, id);
778: }
1.1 djm 779: buffer_put_cstring(&msg, oldpath);
780: buffer_put_cstring(&msg, newpath);
1.93 djm 781: send_msg(conn, &msg);
1.81 djm 782: debug3("Sent message %s \"%s\" -> \"%s\"",
783: (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" :
784: "SSH2_FXP_RENAME", oldpath, newpath);
1.1 djm 785: buffer_free(&msg);
786:
1.93 djm 787: status = get_status(conn, id);
1.1 djm 788: if (status != SSH2_FX_OK)
1.23 djm 789: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 790: newpath, fx2txt(status));
791:
792: return(status);
793: }
794:
795: int
796: do_hardlink(struct sftp_conn *conn, char *oldpath, char *newpath)
797: {
798: Buffer msg;
799: u_int status, id;
800:
801: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
802: error("Server does not support hardlink@openssh.com extension");
803: return -1;
804: }
805:
1.95 ! markus 806: buffer_init(&msg);
! 807:
! 808: /* Send link request */
! 809: id = conn->msg_id++;
1.94 djm 810: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
811: buffer_put_int(&msg, id);
812: buffer_put_cstring(&msg, "hardlink@openssh.com");
813: buffer_put_cstring(&msg, oldpath);
814: buffer_put_cstring(&msg, newpath);
815: send_msg(conn, &msg);
816: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
817: oldpath, newpath);
818: buffer_free(&msg);
819:
820: status = get_status(conn, id);
821: if (status != SSH2_FX_OK)
822: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 823: newpath, fx2txt(status));
1.1 djm 824:
825: return(status);
1.11 djm 826: }
827:
828: int
1.23 djm 829: do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
1.11 djm 830: {
831: Buffer msg;
832: u_int status, id;
833:
1.23 djm 834: if (conn->version < 3) {
835: error("This server does not support the symlink operation");
836: return(SSH2_FX_OP_UNSUPPORTED);
837: }
838:
1.11 djm 839: buffer_init(&msg);
840:
1.48 djm 841: /* Send symlink request */
1.23 djm 842: id = conn->msg_id++;
1.11 djm 843: buffer_put_char(&msg, SSH2_FXP_SYMLINK);
844: buffer_put_int(&msg, id);
845: buffer_put_cstring(&msg, oldpath);
846: buffer_put_cstring(&msg, newpath);
1.93 djm 847: send_msg(conn, &msg);
1.11 djm 848: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
849: newpath);
850: buffer_free(&msg);
851:
1.93 djm 852: status = get_status(conn, id);
1.11 djm 853: if (status != SSH2_FX_OK)
1.36 markus 854: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 855: newpath, fx2txt(status));
1.11 djm 856:
857: return(status);
858: }
859:
1.78 chl 860: #ifdef notyet
1.11 djm 861: char *
1.23 djm 862: do_readlink(struct sftp_conn *conn, char *path)
1.11 djm 863: {
864: Buffer msg;
865: u_int type, expected_id, count, id;
866: char *filename, *longname;
867: Attrib *a;
868:
1.23 djm 869: expected_id = id = conn->msg_id++;
1.93 djm 870: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 871:
872: buffer_init(&msg);
873:
1.93 djm 874: get_msg(conn, &msg);
1.11 djm 875: type = buffer_get_char(&msg);
876: id = buffer_get_int(&msg);
877:
878: if (id != expected_id)
1.33 deraadt 879: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 880:
881: if (type == SSH2_FXP_STATUS) {
882: u_int status = buffer_get_int(&msg);
883:
884: error("Couldn't readlink: %s", fx2txt(status));
1.95 ! markus 885: buffer_free(&msg);
1.11 djm 886: return(NULL);
887: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 888: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 889: SSH2_FXP_NAME, type);
890:
891: count = buffer_get_int(&msg);
892: if (count != 1)
893: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
894:
895: filename = buffer_get_string(&msg, NULL);
896: longname = buffer_get_string(&msg, NULL);
897: a = decode_attrib(&msg);
898:
899: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
900:
901: xfree(longname);
902:
903: buffer_free(&msg);
904:
905: return(filename);
1.82 djm 906: }
907: #endif
908:
909: int
1.84 dtucker 910: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 911: int quiet)
912: {
913: Buffer msg;
914: u_int id;
915:
916: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
917: error("Server does not support statvfs@openssh.com extension");
918: return -1;
919: }
920:
921: id = conn->msg_id++;
922:
923: buffer_init(&msg);
924: buffer_clear(&msg);
925: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
926: buffer_put_int(&msg, id);
927: buffer_put_cstring(&msg, "statvfs@openssh.com");
928: buffer_put_cstring(&msg, path);
1.93 djm 929: send_msg(conn, &msg);
1.82 djm 930: buffer_free(&msg);
931:
1.93 djm 932: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 933: }
934:
935: #ifdef notyet
936: int
937: do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len,
1.84 dtucker 938: struct sftp_statvfs *st, int quiet)
1.82 djm 939: {
940: Buffer msg;
941: u_int id;
942:
943: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
944: error("Server does not support fstatvfs@openssh.com extension");
945: return -1;
946: }
947:
948: id = conn->msg_id++;
949:
950: buffer_init(&msg);
951: buffer_clear(&msg);
952: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
953: buffer_put_int(&msg, id);
954: buffer_put_cstring(&msg, "fstatvfs@openssh.com");
955: buffer_put_string(&msg, handle, handle_len);
1.93 djm 956: send_msg(conn, &msg);
1.82 djm 957: buffer_free(&msg);
958:
1.93 djm 959: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 960: }
1.78 chl 961: #endif
1.1 djm 962:
1.21 djm 963: static void
1.93 djm 964: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
965: u_int len, char *handle, u_int handle_len)
1.21 djm 966: {
967: Buffer msg;
1.28 markus 968:
1.21 djm 969: buffer_init(&msg);
970: buffer_clear(&msg);
971: buffer_put_char(&msg, SSH2_FXP_READ);
972: buffer_put_int(&msg, id);
973: buffer_put_string(&msg, handle, handle_len);
974: buffer_put_int64(&msg, offset);
975: buffer_put_int(&msg, len);
1.93 djm 976: send_msg(conn, &msg);
1.21 djm 977: buffer_free(&msg);
1.28 markus 978: }
1.21 djm 979:
1.1 djm 980: int
1.23 djm 981: do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
1.89 djm 982: Attrib *a, int pflag)
1.1 djm 983: {
1.89 djm 984: Attrib junk;
1.21 djm 985: Buffer msg;
1.1 djm 986: char *handle;
1.57 dtucker 987: int local_fd, status = 0, write_error;
1.21 djm 988: int read_error, write_errno;
989: u_int64_t offset, size;
1.55 djm 990: u_int handle_len, mode, type, id, buflen, num_req, max_req;
1.39 fgsch 991: off_t progress_counter;
1.21 djm 992: struct request {
993: u_int id;
994: u_int len;
995: u_int64_t offset;
1.28 markus 996: TAILQ_ENTRY(request) tq;
1.21 djm 997: };
998: TAILQ_HEAD(reqhead, request) requests;
999: struct request *req;
1000:
1001: TAILQ_INIT(&requests);
1.1 djm 1002:
1.89 djm 1003: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1004: return -1;
1.1 djm 1005:
1.86 djm 1006: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1007: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1008: mode = a->perm & 0777;
1.1 djm 1009: else
1010: mode = 0666;
1011:
1.14 djm 1012: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1013: (!S_ISREG(a->perm))) {
1014: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1015: return(-1);
1016: }
1017:
1.21 djm 1018: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1019: size = a->size;
1020: else
1021: size = 0;
1022:
1.23 djm 1023: buflen = conn->transfer_buflen;
1.1 djm 1024: buffer_init(&msg);
1025:
1026: /* Send open request */
1.23 djm 1027: id = conn->msg_id++;
1.1 djm 1028: buffer_put_char(&msg, SSH2_FXP_OPEN);
1029: buffer_put_int(&msg, id);
1030: buffer_put_cstring(&msg, remote_path);
1031: buffer_put_int(&msg, SSH2_FXF_READ);
1032: attrib_clear(&junk); /* Send empty attributes */
1033: encode_attrib(&msg, &junk);
1.93 djm 1034: send_msg(conn, &msg);
1.33 deraadt 1035: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1036:
1.93 djm 1037: handle = get_handle(conn, id, &handle_len,
1.88 djm 1038: "remote open(\"%s\")", remote_path);
1.1 djm 1039: if (handle == NULL) {
1040: buffer_free(&msg);
1041: return(-1);
1042: }
1043:
1.45 djm 1044: local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC,
1.38 djm 1045: mode | S_IWRITE);
1.23 djm 1046: if (local_fd == -1) {
1047: error("Couldn't open local file \"%s\" for writing: %s",
1048: local_path, strerror(errno));
1.79 djm 1049: do_close(conn, handle, handle_len);
1.24 markus 1050: buffer_free(&msg);
1051: xfree(handle);
1.23 djm 1052: return(-1);
1053: }
1054:
1.1 djm 1055: /* Read from remote and write to local */
1.21 djm 1056: write_error = read_error = write_errno = num_req = offset = 0;
1057: max_req = 1;
1.39 fgsch 1058: progress_counter = 0;
1059:
1.47 djm 1060: if (showprogress && size != 0)
1061: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1062:
1.21 djm 1063: while (num_req > 0 || max_req > 0) {
1064: char *data;
1.1 djm 1065: u_int len;
1066:
1.49 djm 1067: /*
1.51 deraadt 1068: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1069: * allow outstanding requests to drain gracefully
1070: */
1071: if (interrupted) {
1072: if (num_req == 0) /* If we haven't started yet... */
1073: break;
1074: max_req = 0;
1075: }
1076:
1.21 djm 1077: /* Send some more requests */
1078: while (num_req < max_req) {
1.28 markus 1079: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1080: (unsigned long long)offset,
1081: (unsigned long long)offset + buflen - 1,
1082: num_req, max_req);
1.21 djm 1083: req = xmalloc(sizeof(*req));
1.23 djm 1084: req->id = conn->msg_id++;
1.21 djm 1085: req->len = buflen;
1086: req->offset = offset;
1087: offset += buflen;
1088: num_req++;
1089: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1090: send_read_request(conn, req->id, req->offset,
1.21 djm 1091: req->len, handle, handle_len);
1092: }
1.1 djm 1093:
1094: buffer_clear(&msg);
1.93 djm 1095: get_msg(conn, &msg);
1.1 djm 1096: type = buffer_get_char(&msg);
1097: id = buffer_get_int(&msg);
1.33 deraadt 1098: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1099:
1100: /* Find the request in our queue */
1.53 deraadt 1101: for (req = TAILQ_FIRST(&requests);
1.21 djm 1102: req != NULL && req->id != id;
1103: req = TAILQ_NEXT(req, tq))
1104: ;
1105: if (req == NULL)
1106: fatal("Unexpected reply %u", id);
1107:
1108: switch (type) {
1109: case SSH2_FXP_STATUS:
1.5 djm 1110: status = buffer_get_int(&msg);
1.21 djm 1111: if (status != SSH2_FX_EOF)
1112: read_error = 1;
1113: max_req = 0;
1114: TAILQ_REMOVE(&requests, req, tq);
1115: xfree(req);
1116: num_req--;
1117: break;
1118: case SSH2_FXP_DATA:
1119: data = buffer_get_string(&msg, &len);
1.26 itojun 1120: debug3("Received data %llu -> %llu",
1.28 markus 1121: (unsigned long long)req->offset,
1.26 itojun 1122: (unsigned long long)req->offset + len - 1);
1.21 djm 1123: if (len > req->len)
1124: fatal("Received more data than asked for "
1.37 deraadt 1125: "%u > %u", len, req->len);
1.21 djm 1126: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1127: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1128: !write_error) {
1129: write_errno = errno;
1130: write_error = 1;
1131: max_req = 0;
1132: }
1.39 fgsch 1133: progress_counter += len;
1.21 djm 1134: xfree(data);
1.1 djm 1135:
1.21 djm 1136: if (len == req->len) {
1137: TAILQ_REMOVE(&requests, req, tq);
1138: xfree(req);
1139: num_req--;
1140: } else {
1141: /* Resend the request for the missing data */
1142: debug3("Short data block, re-requesting "
1.26 itojun 1143: "%llu -> %llu (%2d)",
1.28 markus 1144: (unsigned long long)req->offset + len,
1.27 itojun 1145: (unsigned long long)req->offset +
1146: req->len - 1, num_req);
1.23 djm 1147: req->id = conn->msg_id++;
1.21 djm 1148: req->len -= len;
1149: req->offset += len;
1.93 djm 1150: send_read_request(conn, req->id,
1.23 djm 1151: req->offset, req->len, handle, handle_len);
1.21 djm 1152: /* Reduce the request size */
1153: if (len < buflen)
1154: buflen = MAX(MIN_READ_SIZE, len);
1155: }
1156: if (max_req > 0) { /* max_req = 0 iff EOF received */
1157: if (size > 0 && offset > size) {
1158: /* Only one request at a time
1159: * after the expected EOF */
1160: debug3("Finish at %llu (%2d)",
1.26 itojun 1161: (unsigned long long)offset,
1162: num_req);
1.21 djm 1163: max_req = 1;
1.49 djm 1164: } else if (max_req <= conn->num_requests) {
1.21 djm 1165: ++max_req;
1166: }
1.1 djm 1167: }
1.21 djm 1168: break;
1169: default:
1.33 deraadt 1170: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1171: SSH2_FXP_DATA, type);
1172: }
1.21 djm 1173: }
1.1 djm 1174:
1.39 fgsch 1175: if (showprogress && size)
1176: stop_progress_meter();
1177:
1.21 djm 1178: /* Sanity check */
1179: if (TAILQ_FIRST(&requests) != NULL)
1180: fatal("Transfer complete, but requests still in queue");
1181:
1182: if (read_error) {
1.28 markus 1183: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1184: remote_path, fx2txt(status));
1.23 djm 1185: do_close(conn, handle, handle_len);
1.21 djm 1186: } else if (write_error) {
1187: error("Couldn't write to \"%s\": %s", local_path,
1188: strerror(write_errno));
1189: status = -1;
1.23 djm 1190: do_close(conn, handle, handle_len);
1.21 djm 1191: } else {
1.23 djm 1192: status = do_close(conn, handle, handle_len);
1.21 djm 1193:
1194: /* Override umask and utimes if asked */
1195: if (pflag && fchmod(local_fd, mode) == -1)
1196: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1197: strerror(errno));
1.21 djm 1198: if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1199: struct timeval tv[2];
1200: tv[0].tv_sec = a->atime;
1201: tv[1].tv_sec = a->mtime;
1202: tv[0].tv_usec = tv[1].tv_usec = 0;
1203: if (utimes(local_path, tv) == -1)
1204: error("Can't set times on \"%s\": %s",
1.37 deraadt 1205: local_path, strerror(errno));
1.1 djm 1206: }
1.10 djm 1207: }
1.5 djm 1208: close(local_fd);
1209: buffer_free(&msg);
1.1 djm 1210: xfree(handle);
1.23 djm 1211:
1212: return(status);
1.1 djm 1213: }
1214:
1.89 djm 1215: static int
1216: download_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1217: Attrib *dirattrib, int pflag, int printflag, int depth)
1218: {
1219: int i, ret = 0;
1220: SFTP_DIRENT **dir_entries;
1221: char *filename, *new_src, *new_dst;
1222: mode_t mode = 0777;
1223:
1224: if (depth >= MAX_DIR_DEPTH) {
1225: error("Maximum directory depth exceeded: %d levels", depth);
1226: return -1;
1227: }
1228:
1229: if (dirattrib == NULL &&
1230: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1231: error("Unable to stat remote directory \"%s\"", src);
1232: return -1;
1233: }
1234: if (!S_ISDIR(dirattrib->perm)) {
1235: error("\"%s\" is not a directory", src);
1236: return -1;
1237: }
1238: if (printflag)
1239: printf("Retrieving %s\n", src);
1240:
1241: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1242: mode = dirattrib->perm & 01777;
1243: else {
1244: debug("Server did not send permissions for "
1245: "directory \"%s\"", dst);
1246: }
1247:
1248: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1249: error("mkdir %s: %s", dst, strerror(errno));
1250: return -1;
1251: }
1252:
1253: if (do_readdir(conn, src, &dir_entries) == -1) {
1254: error("%s: Failed to get directory contents", src);
1255: return -1;
1256: }
1257:
1258: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1259: filename = dir_entries[i]->filename;
1260:
1261: new_dst = path_append(dst, filename);
1262: new_src = path_append(src, filename);
1263:
1264: if (S_ISDIR(dir_entries[i]->a.perm)) {
1265: if (strcmp(filename, ".") == 0 ||
1266: strcmp(filename, "..") == 0)
1267: continue;
1268: if (download_dir_internal(conn, new_src, new_dst,
1269: &(dir_entries[i]->a), pflag, printflag,
1270: depth + 1) == -1)
1271: ret = -1;
1272: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1273: if (do_download(conn, new_src, new_dst,
1274: &(dir_entries[i]->a), pflag) == -1) {
1275: error("Download of file %s to %s failed",
1276: new_src, new_dst);
1277: ret = -1;
1278: }
1279: } else
1280: logit("%s: not a regular file\n", new_src);
1281:
1282: xfree(new_dst);
1283: xfree(new_src);
1284: }
1285:
1286: if (pflag) {
1287: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1288: struct timeval tv[2];
1289: tv[0].tv_sec = dirattrib->atime;
1290: tv[1].tv_sec = dirattrib->mtime;
1291: tv[0].tv_usec = tv[1].tv_usec = 0;
1292: if (utimes(dst, tv) == -1)
1293: error("Can't set times on \"%s\": %s",
1294: dst, strerror(errno));
1295: } else
1296: debug("Server did not send times for directory "
1297: "\"%s\"", dst);
1298: }
1299:
1300: free_sftp_dirents(dir_entries);
1301:
1302: return ret;
1303: }
1304:
1305: int
1306: download_dir(struct sftp_conn *conn, char *src, char *dst,
1307: Attrib *dirattrib, int pflag, int printflag)
1308: {
1309: char *src_canon;
1310: int ret;
1311:
1312: if ((src_canon = do_realpath(conn, src)) == NULL) {
1313: error("Unable to canonicalise path \"%s\"", src);
1314: return -1;
1315: }
1316:
1317: ret = download_dir_internal(conn, src_canon, dst,
1318: dirattrib, pflag, printflag, 0);
1319: xfree(src_canon);
1320: return ret;
1321: }
1322:
1.1 djm 1323: int
1.23 djm 1324: do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
1325: int pflag)
1.1 djm 1326: {
1.80 djm 1327: int local_fd;
1328: int status = SSH2_FX_OK;
1.22 djm 1329: u_int handle_len, id, type;
1.77 djm 1330: off_t offset;
1.20 djm 1331: char *handle, *data;
1.1 djm 1332: Buffer msg;
1333: struct stat sb;
1334: Attrib a;
1.21 djm 1335: u_int32_t startid;
1336: u_int32_t ackid;
1.22 djm 1337: struct outstanding_ack {
1338: u_int id;
1339: u_int len;
1.77 djm 1340: off_t offset;
1.28 markus 1341: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1342: };
1343: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1344: struct outstanding_ack *ack = NULL;
1.22 djm 1345:
1346: TAILQ_INIT(&acks);
1.1 djm 1347:
1348: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1349: error("Couldn't open local file \"%s\" for reading: %s",
1350: local_path, strerror(errno));
1351: return(-1);
1352: }
1353: if (fstat(local_fd, &sb) == -1) {
1354: error("Couldn't fstat local file \"%s\": %s",
1355: local_path, strerror(errno));
1.41 djm 1356: close(local_fd);
1357: return(-1);
1358: }
1359: if (!S_ISREG(sb.st_mode)) {
1360: error("%s is not a regular file", local_path);
1.1 djm 1361: close(local_fd);
1362: return(-1);
1363: }
1364: stat_to_attrib(&sb, &a);
1365:
1366: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1367: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1368: a.perm &= 0777;
1369: if (!pflag)
1370: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1371:
1372: buffer_init(&msg);
1373:
1374: /* Send open request */
1.23 djm 1375: id = conn->msg_id++;
1.1 djm 1376: buffer_put_char(&msg, SSH2_FXP_OPEN);
1377: buffer_put_int(&msg, id);
1378: buffer_put_cstring(&msg, remote_path);
1379: buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC);
1380: encode_attrib(&msg, &a);
1.93 djm 1381: send_msg(conn, &msg);
1.33 deraadt 1382: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1383:
1384: buffer_clear(&msg);
1385:
1.93 djm 1386: handle = get_handle(conn, id, &handle_len,
1.88 djm 1387: "remote open(\"%s\")", remote_path);
1.1 djm 1388: if (handle == NULL) {
1389: close(local_fd);
1390: buffer_free(&msg);
1.80 djm 1391: return -1;
1.1 djm 1392: }
1393:
1.21 djm 1394: startid = ackid = id + 1;
1.23 djm 1395: data = xmalloc(conn->transfer_buflen);
1.20 djm 1396:
1.1 djm 1397: /* Read from local and write to remote */
1398: offset = 0;
1.39 fgsch 1399: if (showprogress)
1400: start_progress_meter(local_path, sb.st_size, &offset);
1401:
1.19 deraadt 1402: for (;;) {
1.1 djm 1403: int len;
1404:
1405: /*
1.51 deraadt 1406: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1407: * thus losing the last block of the file.
1.51 deraadt 1408: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1409: * server to drain.
1.1 djm 1410: */
1.80 djm 1411: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1412: len = 0;
1413: else do
1.23 djm 1414: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1415: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1416:
1417: if (len == -1)
1418: fatal("Couldn't read from \"%s\": %s", local_path,
1419: strerror(errno));
1.21 djm 1420:
1421: if (len != 0) {
1.22 djm 1422: ack = xmalloc(sizeof(*ack));
1423: ack->id = ++id;
1424: ack->offset = offset;
1425: ack->len = len;
1426: TAILQ_INSERT_TAIL(&acks, ack, tq);
1427:
1.21 djm 1428: buffer_clear(&msg);
1429: buffer_put_char(&msg, SSH2_FXP_WRITE);
1.22 djm 1430: buffer_put_int(&msg, ack->id);
1.21 djm 1431: buffer_put_string(&msg, handle, handle_len);
1432: buffer_put_int64(&msg, offset);
1433: buffer_put_string(&msg, data, len);
1.93 djm 1434: send_msg(conn, &msg);
1.33 deraadt 1435: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1436: id, (unsigned long long)offset, len);
1.22 djm 1437: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1438: break;
1439:
1.22 djm 1440: if (ack == NULL)
1441: fatal("Unexpected ACK %u", id);
1442:
1.28 markus 1443: if (id == startid || len == 0 ||
1.23 djm 1444: id - ackid >= conn->num_requests) {
1.32 markus 1445: u_int r_id;
1.31 djm 1446:
1.22 djm 1447: buffer_clear(&msg);
1.93 djm 1448: get_msg(conn, &msg);
1.22 djm 1449: type = buffer_get_char(&msg);
1.31 djm 1450: r_id = buffer_get_int(&msg);
1.22 djm 1451:
1452: if (type != SSH2_FXP_STATUS)
1453: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1454: "got %d", SSH2_FXP_STATUS, type);
1455:
1456: status = buffer_get_int(&msg);
1457: debug3("SSH2_FXP_STATUS %d", status);
1458:
1459: /* Find the request in our queue */
1.53 deraadt 1460: for (ack = TAILQ_FIRST(&acks);
1.31 djm 1461: ack != NULL && ack->id != r_id;
1.22 djm 1462: ack = TAILQ_NEXT(ack, tq))
1463: ;
1464: if (ack == NULL)
1.33 deraadt 1465: fatal("Can't find request for ID %u", r_id);
1.22 djm 1466: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1467: debug3("In write loop, ack for %u %u bytes at %lld",
1468: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1469: ++ackid;
1.34 deraadt 1470: xfree(ack);
1.1 djm 1471: }
1472: offset += len;
1.77 djm 1473: if (offset < 0)
1474: fatal("%s: offset < 0", __func__);
1.1 djm 1475: }
1.80 djm 1476: buffer_free(&msg);
1477:
1.39 fgsch 1478: if (showprogress)
1479: stop_progress_meter();
1.20 djm 1480: xfree(data);
1.1 djm 1481:
1.80 djm 1482: if (status != SSH2_FX_OK) {
1483: error("Couldn't write to remote file \"%s\": %s",
1484: remote_path, fx2txt(status));
1485: status = -1;
1486: }
1487:
1.1 djm 1488: if (close(local_fd) == -1) {
1489: error("Couldn't close local file \"%s\": %s", local_path,
1490: strerror(errno));
1.5 djm 1491: status = -1;
1.1 djm 1492: }
1493:
1.10 djm 1494: /* Override umask and utimes if asked */
1495: if (pflag)
1.23 djm 1496: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1497:
1.80 djm 1498: if (do_close(conn, handle, handle_len) != SSH2_FX_OK)
1499: status = -1;
1500: xfree(handle);
1.5 djm 1501:
1.80 djm 1502: return status;
1.1 djm 1503: }
1.89 djm 1504:
1505: static int
1506: upload_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1507: int pflag, int printflag, int depth)
1508: {
1509: int ret = 0, status;
1510: DIR *dirp;
1511: struct dirent *dp;
1512: char *filename, *new_src, *new_dst;
1513: struct stat sb;
1514: Attrib a;
1515:
1516: if (depth >= MAX_DIR_DEPTH) {
1517: error("Maximum directory depth exceeded: %d levels", depth);
1518: return -1;
1519: }
1520:
1521: if (stat(src, &sb) == -1) {
1522: error("Couldn't stat directory \"%s\": %s",
1523: src, strerror(errno));
1524: return -1;
1525: }
1526: if (!S_ISDIR(sb.st_mode)) {
1527: error("\"%s\" is not a directory", src);
1528: return -1;
1529: }
1530: if (printflag)
1531: printf("Entering %s\n", src);
1532:
1533: attrib_clear(&a);
1534: stat_to_attrib(&sb, &a);
1535: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1536: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1537: a.perm &= 01777;
1538: if (!pflag)
1539: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1540:
1541: status = do_mkdir(conn, dst, &a, 0);
1542: /*
1543: * we lack a portable status for errno EEXIST,
1544: * so if we get a SSH2_FX_FAILURE back we must check
1545: * if it was created successfully.
1546: */
1547: if (status != SSH2_FX_OK) {
1548: if (status != SSH2_FX_FAILURE)
1549: return -1;
1550: if (do_stat(conn, dst, 0) == NULL)
1551: return -1;
1552: }
1553:
1554: if ((dirp = opendir(src)) == NULL) {
1555: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1556: return -1;
1557: }
1558:
1559: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1560: if (dp->d_ino == 0)
1561: continue;
1562: filename = dp->d_name;
1563: new_dst = path_append(dst, filename);
1564: new_src = path_append(src, filename);
1565:
1.90 dtucker 1566: if (lstat(new_src, &sb) == -1) {
1567: logit("%s: lstat failed: %s", filename,
1568: strerror(errno));
1569: ret = -1;
1570: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1571: if (strcmp(filename, ".") == 0 ||
1572: strcmp(filename, "..") == 0)
1573: continue;
1574:
1575: if (upload_dir_internal(conn, new_src, new_dst,
1.92 djm 1576: pflag, printflag, depth + 1) == -1)
1.89 djm 1577: ret = -1;
1.90 dtucker 1578: } else if (S_ISREG(sb.st_mode)) {
1.89 djm 1579: if (do_upload(conn, new_src, new_dst, pflag) == -1) {
1580: error("Uploading of file %s to %s failed!",
1581: new_src, new_dst);
1582: ret = -1;
1583: }
1584: } else
1585: logit("%s: not a regular file\n", filename);
1586: xfree(new_dst);
1587: xfree(new_src);
1588: }
1589:
1590: do_setstat(conn, dst, &a);
1591:
1592: (void) closedir(dirp);
1593: return ret;
1594: }
1595:
1596: int
1597: upload_dir(struct sftp_conn *conn, char *src, char *dst, int printflag,
1598: int pflag)
1599: {
1600: char *dst_canon;
1601: int ret;
1602:
1603: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1604: error("Unable to canonicalise path \"%s\"", dst);
1605: return -1;
1606: }
1607:
1608: ret = upload_dir_internal(conn, src, dst_canon, pflag, printflag, 0);
1609: xfree(dst_canon);
1610: return ret;
1611: }
1612:
1613: char *
1614: path_append(char *p1, char *p2)
1615: {
1616: char *ret;
1617: size_t len = strlen(p1) + strlen(p2) + 2;
1618:
1619: ret = xmalloc(len);
1620: strlcpy(ret, p1, len);
1621: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1622: strlcat(ret, "/", len);
1623: strlcat(ret, p2, len);
1624:
1625: return(ret);
1626: }
1627:
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