Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.102
1.102 ! djm 1: /* $OpenBSD: sftp-client.c,v 1.101 2013/07/25 00:56:51 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,
1.101 djm 108: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
1.93 djm 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: }
1.98 djm 390: free(name);
391: free(value);
1.1 djm 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:
1.93 djm 458: handle = get_handle(conn, id, &handle_len,
1.88 djm 459: "remote readdir(\"%s\")", path);
1.96 markus 460: if (handle == NULL) {
461: buffer_free(&msg);
1.93 djm 462: return -1;
1.96 markus 463: }
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);
1.98 djm 505: free(handle);
1.96 markus 506: buffer_free(&msg);
1.9 djm 507: return(status);
1.1 djm 508: }
509: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 510: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 511: SSH2_FXP_NAME, type);
512:
513: count = buffer_get_int(&msg);
1.7 markus 514: if (count == 0)
515: break;
1.8 stevesk 516: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 517: for (i = 0; i < count; i++) {
1.1 djm 518: char *filename, *longname;
519: Attrib *a;
520:
521: filename = buffer_get_string(&msg, NULL);
522: longname = buffer_get_string(&msg, NULL);
523: a = decode_attrib(&msg);
524:
1.12 djm 525: if (printflag)
526: printf("%s\n", longname);
527:
1.89 djm 528: /*
529: * Directory entries should never contain '/'
530: * These can be used to attack recursive ops
531: * (e.g. send '../../../../etc/passwd')
532: */
533: if (strchr(filename, '/') != NULL) {
534: error("Server sent suspect path \"%s\" "
535: "during readdir of \"%s\"", filename, path);
536: goto next;
537: }
538:
1.12 djm 539: if (dir) {
1.62 djm 540: *dir = xrealloc(*dir, ents + 2, sizeof(**dir));
1.12 djm 541: (*dir)[ents] = xmalloc(sizeof(***dir));
542: (*dir)[ents]->filename = xstrdup(filename);
543: (*dir)[ents]->longname = xstrdup(longname);
544: memcpy(&(*dir)[ents]->a, a, sizeof(*a));
545: (*dir)[++ents] = NULL;
546: }
1.89 djm 547: next:
1.98 djm 548: free(filename);
549: free(longname);
1.1 djm 550: }
551: }
552:
553: buffer_free(&msg);
1.23 djm 554: do_close(conn, handle, handle_len);
1.98 djm 555: free(handle);
1.1 djm 556:
1.49 djm 557: /* Don't return partial matches on interrupt */
558: if (interrupted && dir != NULL && *dir != NULL) {
559: free_sftp_dirents(*dir);
560: *dir = xmalloc(sizeof(**dir));
561: **dir = NULL;
562: }
563:
1.93 djm 564: return 0;
1.12 djm 565: }
566:
567: int
1.23 djm 568: do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir)
1.12 djm 569: {
1.23 djm 570: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 571: }
572:
573: void free_sftp_dirents(SFTP_DIRENT **s)
574: {
575: int i;
1.19 deraadt 576:
577: for (i = 0; s[i]; i++) {
1.98 djm 578: free(s[i]->filename);
579: free(s[i]->longname);
580: free(s[i]);
1.12 djm 581: }
1.98 djm 582: free(s);
1.12 djm 583: }
584:
585: int
1.23 djm 586: do_rm(struct sftp_conn *conn, char *path)
1.1 djm 587: {
588: u_int status, id;
589:
590: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
591:
1.23 djm 592: id = conn->msg_id++;
1.93 djm 593: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
594: status = get_status(conn, id);
1.1 djm 595: if (status != SSH2_FX_OK)
596: error("Couldn't delete file: %s", fx2txt(status));
597: return(status);
598: }
599:
600: int
1.89 djm 601: do_mkdir(struct sftp_conn *conn, char *path, Attrib *a, int printflag)
1.1 djm 602: {
603: u_int status, id;
604:
1.23 djm 605: id = conn->msg_id++;
1.93 djm 606: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 607: strlen(path), a);
608:
1.93 djm 609: status = get_status(conn, id);
1.89 djm 610: if (status != SSH2_FX_OK && printflag)
1.1 djm 611: error("Couldn't create directory: %s", fx2txt(status));
612:
613: return(status);
614: }
615:
616: int
1.23 djm 617: do_rmdir(struct sftp_conn *conn, char *path)
1.1 djm 618: {
619: u_int status, id;
620:
1.23 djm 621: id = conn->msg_id++;
1.93 djm 622: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 623: strlen(path));
1.1 djm 624:
1.93 djm 625: status = get_status(conn, id);
1.1 djm 626: if (status != SSH2_FX_OK)
627: error("Couldn't remove directory: %s", fx2txt(status));
628:
629: return(status);
630: }
631:
632: Attrib *
1.23 djm 633: do_stat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 634: {
635: u_int id;
636:
1.23 djm 637: id = conn->msg_id++;
638:
1.93 djm 639: send_string_request(conn, id,
1.28 markus 640: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 641: path, strlen(path));
642:
1.93 djm 643: return(get_decode_stat(conn, id, quiet));
1.1 djm 644: }
645:
646: Attrib *
1.23 djm 647: do_lstat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 648: {
649: u_int id;
650:
1.23 djm 651: if (conn->version == 0) {
652: if (quiet)
653: debug("Server version does not support lstat operation");
654: else
1.43 itojun 655: logit("Server version does not support lstat operation");
1.30 markus 656: return(do_stat(conn, path, quiet));
1.23 djm 657: }
658:
659: id = conn->msg_id++;
1.93 djm 660: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 661: strlen(path));
662:
1.93 djm 663: return(get_decode_stat(conn, id, quiet));
1.1 djm 664: }
665:
1.78 chl 666: #ifdef notyet
1.1 djm 667: Attrib *
1.23 djm 668: do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet)
1.1 djm 669: {
670: u_int id;
671:
1.23 djm 672: id = conn->msg_id++;
1.93 djm 673: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 674: handle_len);
675:
1.93 djm 676: return(get_decode_stat(conn, id, quiet));
1.1 djm 677: }
1.78 chl 678: #endif
1.1 djm 679:
680: int
1.23 djm 681: do_setstat(struct sftp_conn *conn, char *path, Attrib *a)
1.1 djm 682: {
683: u_int status, id;
684:
1.23 djm 685: id = conn->msg_id++;
1.93 djm 686: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 687: strlen(path), a);
688:
1.93 djm 689: status = get_status(conn, id);
1.1 djm 690: if (status != SSH2_FX_OK)
691: error("Couldn't setstat on \"%s\": %s", path,
692: fx2txt(status));
693:
694: return(status);
695: }
696:
697: int
1.23 djm 698: do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
1.1 djm 699: Attrib *a)
700: {
701: u_int status, id;
702:
1.23 djm 703: id = conn->msg_id++;
1.93 djm 704: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 705: handle_len, a);
706:
1.93 djm 707: status = get_status(conn, id);
1.1 djm 708: if (status != SSH2_FX_OK)
709: error("Couldn't fsetstat: %s", fx2txt(status));
710:
711: return(status);
712: }
713:
714: char *
1.23 djm 715: do_realpath(struct sftp_conn *conn, char *path)
1.1 djm 716: {
717: Buffer msg;
718: u_int type, expected_id, count, id;
719: char *filename, *longname;
720: Attrib *a;
721:
1.23 djm 722: expected_id = id = conn->msg_id++;
1.93 djm 723: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 724: strlen(path));
1.1 djm 725:
726: buffer_init(&msg);
727:
1.93 djm 728: get_msg(conn, &msg);
1.1 djm 729: type = buffer_get_char(&msg);
730: id = buffer_get_int(&msg);
731:
732: if (id != expected_id)
1.33 deraadt 733: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 734:
735: if (type == SSH2_FXP_STATUS) {
736: u_int status = buffer_get_int(&msg);
737:
738: error("Couldn't canonicalise: %s", fx2txt(status));
1.91 djm 739: buffer_free(&msg);
740: return NULL;
1.1 djm 741: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 742: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 743: SSH2_FXP_NAME, type);
744:
745: count = buffer_get_int(&msg);
746: if (count != 1)
747: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
748:
749: filename = buffer_get_string(&msg, NULL);
750: longname = buffer_get_string(&msg, NULL);
751: a = decode_attrib(&msg);
752:
1.97 dtucker 753: debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
754: (unsigned long)a->size);
1.1 djm 755:
1.98 djm 756: free(longname);
1.1 djm 757:
758: buffer_free(&msg);
759:
760: return(filename);
761: }
762:
763: int
1.102 ! djm 764: do_rename(struct sftp_conn *conn, char *oldpath, char *newpath,
! 765: int force_legacy)
1.1 djm 766: {
767: Buffer msg;
768: u_int status, id;
1.102 ! djm 769: int use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
1.1 djm 770:
771: buffer_init(&msg);
772:
773: /* Send rename request */
1.23 djm 774: id = conn->msg_id++;
1.102 ! djm 775: if (use_ext) {
1.81 djm 776: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
777: buffer_put_int(&msg, id);
778: buffer_put_cstring(&msg, "posix-rename@openssh.com");
779: } else {
780: buffer_put_char(&msg, SSH2_FXP_RENAME);
781: buffer_put_int(&msg, id);
782: }
1.1 djm 783: buffer_put_cstring(&msg, oldpath);
784: buffer_put_cstring(&msg, newpath);
1.93 djm 785: send_msg(conn, &msg);
1.81 djm 786: debug3("Sent message %s \"%s\" -> \"%s\"",
1.102 ! djm 787: use_ext ? "posix-rename@openssh.com" : "SSH2_FXP_RENAME",
! 788: oldpath, newpath);
1.1 djm 789: buffer_free(&msg);
790:
1.93 djm 791: status = get_status(conn, id);
1.1 djm 792: if (status != SSH2_FX_OK)
1.23 djm 793: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 794: newpath, fx2txt(status));
795:
796: return(status);
797: }
798:
799: int
800: do_hardlink(struct sftp_conn *conn, char *oldpath, char *newpath)
801: {
802: Buffer msg;
803: u_int status, id;
804:
805: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
806: error("Server does not support hardlink@openssh.com extension");
807: return -1;
808: }
809:
1.95 markus 810: buffer_init(&msg);
811:
812: /* Send link request */
813: id = conn->msg_id++;
1.94 djm 814: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
815: buffer_put_int(&msg, id);
816: buffer_put_cstring(&msg, "hardlink@openssh.com");
817: buffer_put_cstring(&msg, oldpath);
818: buffer_put_cstring(&msg, newpath);
819: send_msg(conn, &msg);
820: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
821: oldpath, newpath);
822: buffer_free(&msg);
823:
824: status = get_status(conn, id);
825: if (status != SSH2_FX_OK)
826: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 827: newpath, fx2txt(status));
1.1 djm 828:
829: return(status);
1.11 djm 830: }
831:
832: int
1.23 djm 833: do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
1.11 djm 834: {
835: Buffer msg;
836: u_int status, id;
837:
1.23 djm 838: if (conn->version < 3) {
839: error("This server does not support the symlink operation");
840: return(SSH2_FX_OP_UNSUPPORTED);
841: }
842:
1.11 djm 843: buffer_init(&msg);
844:
1.48 djm 845: /* Send symlink request */
1.23 djm 846: id = conn->msg_id++;
1.11 djm 847: buffer_put_char(&msg, SSH2_FXP_SYMLINK);
848: buffer_put_int(&msg, id);
849: buffer_put_cstring(&msg, oldpath);
850: buffer_put_cstring(&msg, newpath);
1.93 djm 851: send_msg(conn, &msg);
1.11 djm 852: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
853: newpath);
854: buffer_free(&msg);
855:
1.93 djm 856: status = get_status(conn, id);
1.11 djm 857: if (status != SSH2_FX_OK)
1.36 markus 858: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 859: newpath, fx2txt(status));
1.11 djm 860:
861: return(status);
862: }
863:
1.78 chl 864: #ifdef notyet
1.11 djm 865: char *
1.23 djm 866: do_readlink(struct sftp_conn *conn, char *path)
1.11 djm 867: {
868: Buffer msg;
869: u_int type, expected_id, count, id;
870: char *filename, *longname;
871: Attrib *a;
872:
1.23 djm 873: expected_id = id = conn->msg_id++;
1.93 djm 874: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 875:
876: buffer_init(&msg);
877:
1.93 djm 878: get_msg(conn, &msg);
1.11 djm 879: type = buffer_get_char(&msg);
880: id = buffer_get_int(&msg);
881:
882: if (id != expected_id)
1.33 deraadt 883: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 884:
885: if (type == SSH2_FXP_STATUS) {
886: u_int status = buffer_get_int(&msg);
887:
888: error("Couldn't readlink: %s", fx2txt(status));
1.95 markus 889: buffer_free(&msg);
1.11 djm 890: return(NULL);
891: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 892: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 893: SSH2_FXP_NAME, type);
894:
895: count = buffer_get_int(&msg);
896: if (count != 1)
897: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
898:
899: filename = buffer_get_string(&msg, NULL);
900: longname = buffer_get_string(&msg, NULL);
901: a = decode_attrib(&msg);
902:
903: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
904:
1.98 djm 905: free(longname);
1.11 djm 906:
907: buffer_free(&msg);
908:
909: return(filename);
1.82 djm 910: }
911: #endif
912:
913: int
1.84 dtucker 914: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 915: int quiet)
916: {
917: Buffer msg;
918: u_int id;
919:
920: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
921: error("Server does not support statvfs@openssh.com extension");
922: return -1;
923: }
924:
925: id = conn->msg_id++;
926:
927: buffer_init(&msg);
928: buffer_clear(&msg);
929: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
930: buffer_put_int(&msg, id);
931: buffer_put_cstring(&msg, "statvfs@openssh.com");
932: buffer_put_cstring(&msg, path);
1.93 djm 933: send_msg(conn, &msg);
1.82 djm 934: buffer_free(&msg);
935:
1.93 djm 936: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 937: }
938:
939: #ifdef notyet
940: int
941: do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len,
1.84 dtucker 942: struct sftp_statvfs *st, int quiet)
1.82 djm 943: {
944: Buffer msg;
945: u_int id;
946:
947: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
948: error("Server does not support fstatvfs@openssh.com extension");
949: return -1;
950: }
951:
952: id = conn->msg_id++;
953:
954: buffer_init(&msg);
955: buffer_clear(&msg);
956: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
957: buffer_put_int(&msg, id);
958: buffer_put_cstring(&msg, "fstatvfs@openssh.com");
959: buffer_put_string(&msg, handle, handle_len);
1.93 djm 960: send_msg(conn, &msg);
1.82 djm 961: buffer_free(&msg);
962:
1.93 djm 963: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 964: }
1.78 chl 965: #endif
1.1 djm 966:
1.21 djm 967: static void
1.93 djm 968: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
969: u_int len, char *handle, u_int handle_len)
1.21 djm 970: {
971: Buffer msg;
1.28 markus 972:
1.21 djm 973: buffer_init(&msg);
974: buffer_clear(&msg);
975: buffer_put_char(&msg, SSH2_FXP_READ);
976: buffer_put_int(&msg, id);
977: buffer_put_string(&msg, handle, handle_len);
978: buffer_put_int64(&msg, offset);
979: buffer_put_int(&msg, len);
1.93 djm 980: send_msg(conn, &msg);
1.21 djm 981: buffer_free(&msg);
1.28 markus 982: }
1.21 djm 983:
1.1 djm 984: int
1.23 djm 985: do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
1.101 djm 986: Attrib *a, int pflag, int resume)
1.1 djm 987: {
1.89 djm 988: Attrib junk;
1.21 djm 989: Buffer msg;
1.1 djm 990: char *handle;
1.101 djm 991: int local_fd = -1, status = 0, write_error;
992: int read_error, write_errno, reordered = 0;
993: u_int64_t offset = 0, size, highwater;
1.55 djm 994: u_int handle_len, mode, type, id, buflen, num_req, max_req;
1.39 fgsch 995: off_t progress_counter;
1.101 djm 996: struct stat st;
1.21 djm 997: struct request {
998: u_int id;
999: u_int len;
1000: u_int64_t offset;
1.28 markus 1001: TAILQ_ENTRY(request) tq;
1.21 djm 1002: };
1003: TAILQ_HEAD(reqhead, request) requests;
1004: struct request *req;
1005:
1006: TAILQ_INIT(&requests);
1.1 djm 1007:
1.89 djm 1008: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1009: return -1;
1.1 djm 1010:
1.86 djm 1011: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1012: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1013: mode = a->perm & 0777;
1.1 djm 1014: else
1015: mode = 0666;
1016:
1.14 djm 1017: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1018: (!S_ISREG(a->perm))) {
1019: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1020: return(-1);
1021: }
1022:
1.21 djm 1023: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1024: size = a->size;
1025: else
1026: size = 0;
1027:
1.23 djm 1028: buflen = conn->transfer_buflen;
1.1 djm 1029: buffer_init(&msg);
1030:
1031: /* Send open request */
1.23 djm 1032: id = conn->msg_id++;
1.1 djm 1033: buffer_put_char(&msg, SSH2_FXP_OPEN);
1034: buffer_put_int(&msg, id);
1035: buffer_put_cstring(&msg, remote_path);
1036: buffer_put_int(&msg, SSH2_FXF_READ);
1037: attrib_clear(&junk); /* Send empty attributes */
1038: encode_attrib(&msg, &junk);
1.93 djm 1039: send_msg(conn, &msg);
1.33 deraadt 1040: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1041:
1.93 djm 1042: handle = get_handle(conn, id, &handle_len,
1.88 djm 1043: "remote open(\"%s\")", remote_path);
1.1 djm 1044: if (handle == NULL) {
1045: buffer_free(&msg);
1046: return(-1);
1047: }
1048:
1.101 djm 1049: local_fd = open(local_path, O_WRONLY | O_CREAT | (resume ? : O_TRUNC),
1.99 dtucker 1050: mode | S_IWUSR);
1.23 djm 1051: if (local_fd == -1) {
1052: error("Couldn't open local file \"%s\" for writing: %s",
1053: local_path, strerror(errno));
1.101 djm 1054: goto fail;
1055: }
1056: offset = highwater = 0;
1057: if (resume) {
1058: if (fstat(local_fd, &st) == -1) {
1059: error("Unable to stat local file \"%s\": %s",
1060: local_path, strerror(errno));
1061: goto fail;
1062: }
1063: if ((size_t)st.st_size > size) {
1064: error("Unable to resume download of \"%s\": "
1065: "local file is larger than remote", local_path);
1066: fail:
1067: do_close(conn, handle, handle_len);
1068: buffer_free(&msg);
1069: free(handle);
1070: return -1;
1071: }
1072: offset = highwater = st.st_size;
1.23 djm 1073: }
1074:
1.1 djm 1075: /* Read from remote and write to local */
1.101 djm 1076: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1077: max_req = 1;
1.101 djm 1078: progress_counter = offset;
1.39 fgsch 1079:
1.47 djm 1080: if (showprogress && size != 0)
1081: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1082:
1.21 djm 1083: while (num_req > 0 || max_req > 0) {
1084: char *data;
1.1 djm 1085: u_int len;
1086:
1.49 djm 1087: /*
1.51 deraadt 1088: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1089: * allow outstanding requests to drain gracefully
1090: */
1091: if (interrupted) {
1092: if (num_req == 0) /* If we haven't started yet... */
1093: break;
1094: max_req = 0;
1095: }
1096:
1.21 djm 1097: /* Send some more requests */
1098: while (num_req < max_req) {
1.28 markus 1099: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1100: (unsigned long long)offset,
1101: (unsigned long long)offset + buflen - 1,
1102: num_req, max_req);
1.21 djm 1103: req = xmalloc(sizeof(*req));
1.23 djm 1104: req->id = conn->msg_id++;
1.21 djm 1105: req->len = buflen;
1106: req->offset = offset;
1107: offset += buflen;
1108: num_req++;
1109: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1110: send_read_request(conn, req->id, req->offset,
1.21 djm 1111: req->len, handle, handle_len);
1112: }
1.1 djm 1113:
1114: buffer_clear(&msg);
1.93 djm 1115: get_msg(conn, &msg);
1.1 djm 1116: type = buffer_get_char(&msg);
1117: id = buffer_get_int(&msg);
1.33 deraadt 1118: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1119:
1120: /* Find the request in our queue */
1.53 deraadt 1121: for (req = TAILQ_FIRST(&requests);
1.21 djm 1122: req != NULL && req->id != id;
1123: req = TAILQ_NEXT(req, tq))
1124: ;
1125: if (req == NULL)
1126: fatal("Unexpected reply %u", id);
1127:
1128: switch (type) {
1129: case SSH2_FXP_STATUS:
1.5 djm 1130: status = buffer_get_int(&msg);
1.21 djm 1131: if (status != SSH2_FX_EOF)
1132: read_error = 1;
1133: max_req = 0;
1134: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1135: free(req);
1.21 djm 1136: num_req--;
1137: break;
1138: case SSH2_FXP_DATA:
1139: data = buffer_get_string(&msg, &len);
1.26 itojun 1140: debug3("Received data %llu -> %llu",
1.28 markus 1141: (unsigned long long)req->offset,
1.26 itojun 1142: (unsigned long long)req->offset + len - 1);
1.21 djm 1143: if (len > req->len)
1144: fatal("Received more data than asked for "
1.37 deraadt 1145: "%u > %u", len, req->len);
1.21 djm 1146: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1147: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1148: !write_error) {
1149: write_errno = errno;
1150: write_error = 1;
1151: max_req = 0;
1152: }
1.101 djm 1153: else if (!reordered && req->offset <= highwater)
1154: highwater = req->offset + len;
1155: else if (!reordered && req->offset > highwater)
1156: reordered = 1;
1.39 fgsch 1157: progress_counter += len;
1.98 djm 1158: free(data);
1.1 djm 1159:
1.21 djm 1160: if (len == req->len) {
1161: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1162: free(req);
1.21 djm 1163: num_req--;
1164: } else {
1165: /* Resend the request for the missing data */
1166: debug3("Short data block, re-requesting "
1.26 itojun 1167: "%llu -> %llu (%2d)",
1.28 markus 1168: (unsigned long long)req->offset + len,
1.27 itojun 1169: (unsigned long long)req->offset +
1170: req->len - 1, num_req);
1.23 djm 1171: req->id = conn->msg_id++;
1.21 djm 1172: req->len -= len;
1173: req->offset += len;
1.93 djm 1174: send_read_request(conn, req->id,
1.23 djm 1175: req->offset, req->len, handle, handle_len);
1.21 djm 1176: /* Reduce the request size */
1177: if (len < buflen)
1178: buflen = MAX(MIN_READ_SIZE, len);
1179: }
1180: if (max_req > 0) { /* max_req = 0 iff EOF received */
1181: if (size > 0 && offset > size) {
1182: /* Only one request at a time
1183: * after the expected EOF */
1184: debug3("Finish at %llu (%2d)",
1.26 itojun 1185: (unsigned long long)offset,
1186: num_req);
1.21 djm 1187: max_req = 1;
1.49 djm 1188: } else if (max_req <= conn->num_requests) {
1.21 djm 1189: ++max_req;
1190: }
1.1 djm 1191: }
1.21 djm 1192: break;
1193: default:
1.33 deraadt 1194: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1195: SSH2_FXP_DATA, type);
1196: }
1.21 djm 1197: }
1.1 djm 1198:
1.39 fgsch 1199: if (showprogress && size)
1200: stop_progress_meter();
1201:
1.21 djm 1202: /* Sanity check */
1203: if (TAILQ_FIRST(&requests) != NULL)
1204: fatal("Transfer complete, but requests still in queue");
1.101 djm 1205: /* Truncate at highest contiguous point to avoid holes on interrupt */
1206: if (read_error || write_error || interrupted) {
1207: if (reordered && resume) {
1208: error("Unable to resume download of \"%s\": "
1209: "server reordered requests", local_path);
1210: }
1211: debug("truncating at %llu", (unsigned long long)highwater);
1212: ftruncate(local_fd, highwater);
1213: }
1.21 djm 1214: if (read_error) {
1.28 markus 1215: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1216: remote_path, fx2txt(status));
1.23 djm 1217: do_close(conn, handle, handle_len);
1.21 djm 1218: } else if (write_error) {
1219: error("Couldn't write to \"%s\": %s", local_path,
1220: strerror(write_errno));
1221: status = -1;
1.23 djm 1222: do_close(conn, handle, handle_len);
1.21 djm 1223: } else {
1.23 djm 1224: status = do_close(conn, handle, handle_len);
1.101 djm 1225: if (interrupted)
1226: status = -1;
1.21 djm 1227: /* Override umask and utimes if asked */
1228: if (pflag && fchmod(local_fd, mode) == -1)
1229: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1230: strerror(errno));
1.21 djm 1231: if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1232: struct timeval tv[2];
1233: tv[0].tv_sec = a->atime;
1234: tv[1].tv_sec = a->mtime;
1235: tv[0].tv_usec = tv[1].tv_usec = 0;
1236: if (utimes(local_path, tv) == -1)
1237: error("Can't set times on \"%s\": %s",
1.37 deraadt 1238: local_path, strerror(errno));
1.1 djm 1239: }
1.10 djm 1240: }
1.5 djm 1241: close(local_fd);
1242: buffer_free(&msg);
1.98 djm 1243: free(handle);
1.23 djm 1244:
1245: return(status);
1.1 djm 1246: }
1247:
1.89 djm 1248: static int
1249: download_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1.101 djm 1250: Attrib *dirattrib, int pflag, int printflag, int depth, int resume)
1.89 djm 1251: {
1252: int i, ret = 0;
1253: SFTP_DIRENT **dir_entries;
1254: char *filename, *new_src, *new_dst;
1255: mode_t mode = 0777;
1256:
1257: if (depth >= MAX_DIR_DEPTH) {
1258: error("Maximum directory depth exceeded: %d levels", depth);
1259: return -1;
1260: }
1261:
1262: if (dirattrib == NULL &&
1263: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1264: error("Unable to stat remote directory \"%s\"", src);
1265: return -1;
1266: }
1267: if (!S_ISDIR(dirattrib->perm)) {
1268: error("\"%s\" is not a directory", src);
1269: return -1;
1270: }
1271: if (printflag)
1272: printf("Retrieving %s\n", src);
1273:
1274: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1275: mode = dirattrib->perm & 01777;
1276: else {
1277: debug("Server did not send permissions for "
1278: "directory \"%s\"", dst);
1279: }
1280:
1281: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1282: error("mkdir %s: %s", dst, strerror(errno));
1283: return -1;
1284: }
1285:
1286: if (do_readdir(conn, src, &dir_entries) == -1) {
1287: error("%s: Failed to get directory contents", src);
1288: return -1;
1289: }
1290:
1291: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1292: filename = dir_entries[i]->filename;
1293:
1294: new_dst = path_append(dst, filename);
1295: new_src = path_append(src, filename);
1296:
1297: if (S_ISDIR(dir_entries[i]->a.perm)) {
1298: if (strcmp(filename, ".") == 0 ||
1299: strcmp(filename, "..") == 0)
1300: continue;
1301: if (download_dir_internal(conn, new_src, new_dst,
1302: &(dir_entries[i]->a), pflag, printflag,
1.101 djm 1303: depth + 1, resume) == -1)
1.89 djm 1304: ret = -1;
1305: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1306: if (do_download(conn, new_src, new_dst,
1.101 djm 1307: &(dir_entries[i]->a), pflag, resume) == -1) {
1.89 djm 1308: error("Download of file %s to %s failed",
1309: new_src, new_dst);
1310: ret = -1;
1311: }
1312: } else
1313: logit("%s: not a regular file\n", new_src);
1314:
1.98 djm 1315: free(new_dst);
1316: free(new_src);
1.89 djm 1317: }
1318:
1319: if (pflag) {
1320: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1321: struct timeval tv[2];
1322: tv[0].tv_sec = dirattrib->atime;
1323: tv[1].tv_sec = dirattrib->mtime;
1324: tv[0].tv_usec = tv[1].tv_usec = 0;
1325: if (utimes(dst, tv) == -1)
1326: error("Can't set times on \"%s\": %s",
1327: dst, strerror(errno));
1328: } else
1329: debug("Server did not send times for directory "
1330: "\"%s\"", dst);
1331: }
1332:
1333: free_sftp_dirents(dir_entries);
1334:
1335: return ret;
1336: }
1337:
1338: int
1339: download_dir(struct sftp_conn *conn, char *src, char *dst,
1.101 djm 1340: Attrib *dirattrib, int pflag, int printflag, int resume)
1.89 djm 1341: {
1342: char *src_canon;
1343: int ret;
1344:
1345: if ((src_canon = do_realpath(conn, src)) == NULL) {
1346: error("Unable to canonicalise path \"%s\"", src);
1347: return -1;
1348: }
1349:
1350: ret = download_dir_internal(conn, src_canon, dst,
1.101 djm 1351: dirattrib, pflag, printflag, 0, resume);
1.98 djm 1352: free(src_canon);
1.89 djm 1353: return ret;
1354: }
1355:
1.1 djm 1356: int
1.23 djm 1357: do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
1358: int pflag)
1.1 djm 1359: {
1.80 djm 1360: int local_fd;
1361: int status = SSH2_FX_OK;
1.22 djm 1362: u_int handle_len, id, type;
1.100 dtucker 1363: off_t offset, progress_counter;
1.20 djm 1364: char *handle, *data;
1.1 djm 1365: Buffer msg;
1366: struct stat sb;
1367: Attrib a;
1.21 djm 1368: u_int32_t startid;
1369: u_int32_t ackid;
1.22 djm 1370: struct outstanding_ack {
1371: u_int id;
1372: u_int len;
1.77 djm 1373: off_t offset;
1.28 markus 1374: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1375: };
1376: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1377: struct outstanding_ack *ack = NULL;
1.22 djm 1378:
1379: TAILQ_INIT(&acks);
1.1 djm 1380:
1381: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1382: error("Couldn't open local file \"%s\" for reading: %s",
1383: local_path, strerror(errno));
1384: return(-1);
1385: }
1386: if (fstat(local_fd, &sb) == -1) {
1387: error("Couldn't fstat local file \"%s\": %s",
1388: local_path, strerror(errno));
1.41 djm 1389: close(local_fd);
1390: return(-1);
1391: }
1392: if (!S_ISREG(sb.st_mode)) {
1393: error("%s is not a regular file", local_path);
1.1 djm 1394: close(local_fd);
1395: return(-1);
1396: }
1397: stat_to_attrib(&sb, &a);
1398:
1399: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1400: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1401: a.perm &= 0777;
1402: if (!pflag)
1403: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1404:
1405: buffer_init(&msg);
1406:
1407: /* Send open request */
1.23 djm 1408: id = conn->msg_id++;
1.1 djm 1409: buffer_put_char(&msg, SSH2_FXP_OPEN);
1410: buffer_put_int(&msg, id);
1411: buffer_put_cstring(&msg, remote_path);
1412: buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC);
1413: encode_attrib(&msg, &a);
1.93 djm 1414: send_msg(conn, &msg);
1.33 deraadt 1415: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1416:
1417: buffer_clear(&msg);
1418:
1.93 djm 1419: handle = get_handle(conn, id, &handle_len,
1.88 djm 1420: "remote open(\"%s\")", remote_path);
1.1 djm 1421: if (handle == NULL) {
1422: close(local_fd);
1423: buffer_free(&msg);
1.80 djm 1424: return -1;
1.1 djm 1425: }
1426:
1.21 djm 1427: startid = ackid = id + 1;
1.23 djm 1428: data = xmalloc(conn->transfer_buflen);
1.20 djm 1429:
1.1 djm 1430: /* Read from local and write to remote */
1.100 dtucker 1431: offset = progress_counter = 0;
1.39 fgsch 1432: if (showprogress)
1.100 dtucker 1433: start_progress_meter(local_path, sb.st_size,
1434: &progress_counter);
1.39 fgsch 1435:
1.19 deraadt 1436: for (;;) {
1.1 djm 1437: int len;
1438:
1439: /*
1.51 deraadt 1440: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1441: * thus losing the last block of the file.
1.51 deraadt 1442: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1443: * server to drain.
1.1 djm 1444: */
1.80 djm 1445: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1446: len = 0;
1447: else do
1.23 djm 1448: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1449: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1450:
1451: if (len == -1)
1452: fatal("Couldn't read from \"%s\": %s", local_path,
1453: strerror(errno));
1.21 djm 1454:
1455: if (len != 0) {
1.22 djm 1456: ack = xmalloc(sizeof(*ack));
1457: ack->id = ++id;
1458: ack->offset = offset;
1459: ack->len = len;
1460: TAILQ_INSERT_TAIL(&acks, ack, tq);
1461:
1.21 djm 1462: buffer_clear(&msg);
1463: buffer_put_char(&msg, SSH2_FXP_WRITE);
1.22 djm 1464: buffer_put_int(&msg, ack->id);
1.21 djm 1465: buffer_put_string(&msg, handle, handle_len);
1466: buffer_put_int64(&msg, offset);
1467: buffer_put_string(&msg, data, len);
1.93 djm 1468: send_msg(conn, &msg);
1.33 deraadt 1469: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1470: id, (unsigned long long)offset, len);
1.22 djm 1471: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1472: break;
1473:
1.22 djm 1474: if (ack == NULL)
1475: fatal("Unexpected ACK %u", id);
1476:
1.28 markus 1477: if (id == startid || len == 0 ||
1.23 djm 1478: id - ackid >= conn->num_requests) {
1.32 markus 1479: u_int r_id;
1.31 djm 1480:
1.22 djm 1481: buffer_clear(&msg);
1.93 djm 1482: get_msg(conn, &msg);
1.22 djm 1483: type = buffer_get_char(&msg);
1.31 djm 1484: r_id = buffer_get_int(&msg);
1.22 djm 1485:
1486: if (type != SSH2_FXP_STATUS)
1487: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1488: "got %d", SSH2_FXP_STATUS, type);
1489:
1490: status = buffer_get_int(&msg);
1491: debug3("SSH2_FXP_STATUS %d", status);
1492:
1493: /* Find the request in our queue */
1.53 deraadt 1494: for (ack = TAILQ_FIRST(&acks);
1.31 djm 1495: ack != NULL && ack->id != r_id;
1.22 djm 1496: ack = TAILQ_NEXT(ack, tq))
1497: ;
1498: if (ack == NULL)
1.33 deraadt 1499: fatal("Can't find request for ID %u", r_id);
1.22 djm 1500: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1501: debug3("In write loop, ack for %u %u bytes at %lld",
1502: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1503: ++ackid;
1.100 dtucker 1504: progress_counter += ack->len;
1.98 djm 1505: free(ack);
1.1 djm 1506: }
1507: offset += len;
1.77 djm 1508: if (offset < 0)
1509: fatal("%s: offset < 0", __func__);
1.1 djm 1510: }
1.80 djm 1511: buffer_free(&msg);
1512:
1.39 fgsch 1513: if (showprogress)
1514: stop_progress_meter();
1.98 djm 1515: free(data);
1.1 djm 1516:
1.80 djm 1517: if (status != SSH2_FX_OK) {
1518: error("Couldn't write to remote file \"%s\": %s",
1519: remote_path, fx2txt(status));
1520: status = -1;
1521: }
1522:
1.1 djm 1523: if (close(local_fd) == -1) {
1524: error("Couldn't close local file \"%s\": %s", local_path,
1525: strerror(errno));
1.5 djm 1526: status = -1;
1.1 djm 1527: }
1528:
1.10 djm 1529: /* Override umask and utimes if asked */
1530: if (pflag)
1.23 djm 1531: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1532:
1.80 djm 1533: if (do_close(conn, handle, handle_len) != SSH2_FX_OK)
1534: status = -1;
1.98 djm 1535: free(handle);
1.5 djm 1536:
1.80 djm 1537: return status;
1.1 djm 1538: }
1.89 djm 1539:
1540: static int
1541: upload_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1542: int pflag, int printflag, int depth)
1543: {
1544: int ret = 0, status;
1545: DIR *dirp;
1546: struct dirent *dp;
1547: char *filename, *new_src, *new_dst;
1548: struct stat sb;
1549: Attrib a;
1550:
1551: if (depth >= MAX_DIR_DEPTH) {
1552: error("Maximum directory depth exceeded: %d levels", depth);
1553: return -1;
1554: }
1555:
1556: if (stat(src, &sb) == -1) {
1557: error("Couldn't stat directory \"%s\": %s",
1558: src, strerror(errno));
1559: return -1;
1560: }
1561: if (!S_ISDIR(sb.st_mode)) {
1562: error("\"%s\" is not a directory", src);
1563: return -1;
1564: }
1565: if (printflag)
1566: printf("Entering %s\n", src);
1567:
1568: attrib_clear(&a);
1569: stat_to_attrib(&sb, &a);
1570: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1571: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1572: a.perm &= 01777;
1573: if (!pflag)
1574: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 1575:
1.89 djm 1576: status = do_mkdir(conn, dst, &a, 0);
1577: /*
1578: * we lack a portable status for errno EEXIST,
1579: * so if we get a SSH2_FX_FAILURE back we must check
1580: * if it was created successfully.
1581: */
1582: if (status != SSH2_FX_OK) {
1583: if (status != SSH2_FX_FAILURE)
1584: return -1;
1.101 djm 1585: if (do_stat(conn, dst, 0) == NULL)
1.89 djm 1586: return -1;
1587: }
1588:
1589: if ((dirp = opendir(src)) == NULL) {
1590: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1591: return -1;
1592: }
1.101 djm 1593:
1.89 djm 1594: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1595: if (dp->d_ino == 0)
1596: continue;
1597: filename = dp->d_name;
1598: new_dst = path_append(dst, filename);
1599: new_src = path_append(src, filename);
1600:
1.90 dtucker 1601: if (lstat(new_src, &sb) == -1) {
1602: logit("%s: lstat failed: %s", filename,
1603: strerror(errno));
1604: ret = -1;
1605: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1606: if (strcmp(filename, ".") == 0 ||
1607: strcmp(filename, "..") == 0)
1608: continue;
1609:
1610: if (upload_dir_internal(conn, new_src, new_dst,
1.92 djm 1611: pflag, printflag, depth + 1) == -1)
1.89 djm 1612: ret = -1;
1.90 dtucker 1613: } else if (S_ISREG(sb.st_mode)) {
1.89 djm 1614: if (do_upload(conn, new_src, new_dst, pflag) == -1) {
1615: error("Uploading of file %s to %s failed!",
1616: new_src, new_dst);
1617: ret = -1;
1618: }
1619: } else
1620: logit("%s: not a regular file\n", filename);
1.98 djm 1621: free(new_dst);
1622: free(new_src);
1.89 djm 1623: }
1624:
1625: do_setstat(conn, dst, &a);
1626:
1627: (void) closedir(dirp);
1628: return ret;
1629: }
1630:
1631: int
1632: upload_dir(struct sftp_conn *conn, char *src, char *dst, int printflag,
1633: int pflag)
1634: {
1635: char *dst_canon;
1636: int ret;
1637:
1638: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1639: error("Unable to canonicalise path \"%s\"", dst);
1640: return -1;
1641: }
1642:
1643: ret = upload_dir_internal(conn, src, dst_canon, pflag, printflag, 0);
1.98 djm 1644: free(dst_canon);
1.89 djm 1645: return ret;
1646: }
1647:
1648: char *
1649: path_append(char *p1, char *p2)
1650: {
1651: char *ret;
1652: size_t len = strlen(p1) + strlen(p2) + 2;
1653:
1654: ret = xmalloc(len);
1655: strlcpy(ret, p1, len);
1656: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1657: strlcat(ret, "/", len);
1658: strlcat(ret, p2, len);
1659:
1660: return(ret);
1661: }
1662:
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