Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.101.2.1
1.101.2.1! 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;
1.101.2.1! djm 467: *dir = xcalloc(1, sizeof(**dir));
1.12 djm 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));
1.101.2.1! djm 541: (*dir)[ents] = xcalloc(1, sizeof(***dir));
1.12 djm 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);
1.101.2.1! djm 560: *dir = xcalloc(1, sizeof(**dir));
1.49 djm 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
1.23 djm 764: do_rename(struct sftp_conn *conn, char *oldpath, char *newpath)
1.1 djm 765: {
766: Buffer msg;
767: u_int status, id;
768:
769: buffer_init(&msg);
770:
771: /* Send rename request */
1.23 djm 772: id = conn->msg_id++;
1.81 djm 773: if ((conn->exts & SFTP_EXT_POSIX_RENAME)) {
774: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
775: buffer_put_int(&msg, id);
776: buffer_put_cstring(&msg, "posix-rename@openssh.com");
777: } else {
778: buffer_put_char(&msg, SSH2_FXP_RENAME);
779: buffer_put_int(&msg, id);
780: }
1.1 djm 781: buffer_put_cstring(&msg, oldpath);
782: buffer_put_cstring(&msg, newpath);
1.93 djm 783: send_msg(conn, &msg);
1.81 djm 784: debug3("Sent message %s \"%s\" -> \"%s\"",
785: (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" :
786: "SSH2_FXP_RENAME", oldpath, newpath);
1.1 djm 787: buffer_free(&msg);
788:
1.93 djm 789: status = get_status(conn, id);
1.1 djm 790: if (status != SSH2_FX_OK)
1.23 djm 791: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 792: newpath, fx2txt(status));
793:
794: return(status);
795: }
796:
797: int
798: do_hardlink(struct sftp_conn *conn, char *oldpath, char *newpath)
799: {
800: Buffer msg;
801: u_int status, id;
802:
803: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
804: error("Server does not support hardlink@openssh.com extension");
805: return -1;
806: }
807:
1.95 markus 808: buffer_init(&msg);
809:
810: /* Send link request */
811: id = conn->msg_id++;
1.94 djm 812: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
813: buffer_put_int(&msg, id);
814: buffer_put_cstring(&msg, "hardlink@openssh.com");
815: buffer_put_cstring(&msg, oldpath);
816: buffer_put_cstring(&msg, newpath);
817: send_msg(conn, &msg);
818: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
819: oldpath, newpath);
820: buffer_free(&msg);
821:
822: status = get_status(conn, id);
823: if (status != SSH2_FX_OK)
824: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 825: newpath, fx2txt(status));
1.1 djm 826:
827: return(status);
1.11 djm 828: }
829:
830: int
1.23 djm 831: do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
1.11 djm 832: {
833: Buffer msg;
834: u_int status, id;
835:
1.23 djm 836: if (conn->version < 3) {
837: error("This server does not support the symlink operation");
838: return(SSH2_FX_OP_UNSUPPORTED);
839: }
840:
1.11 djm 841: buffer_init(&msg);
842:
1.48 djm 843: /* Send symlink request */
1.23 djm 844: id = conn->msg_id++;
1.11 djm 845: buffer_put_char(&msg, SSH2_FXP_SYMLINK);
846: buffer_put_int(&msg, id);
847: buffer_put_cstring(&msg, oldpath);
848: buffer_put_cstring(&msg, newpath);
1.93 djm 849: send_msg(conn, &msg);
1.11 djm 850: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
851: newpath);
852: buffer_free(&msg);
853:
1.93 djm 854: status = get_status(conn, id);
1.11 djm 855: if (status != SSH2_FX_OK)
1.36 markus 856: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 857: newpath, fx2txt(status));
1.11 djm 858:
859: return(status);
860: }
861:
1.78 chl 862: #ifdef notyet
1.11 djm 863: char *
1.23 djm 864: do_readlink(struct sftp_conn *conn, char *path)
1.11 djm 865: {
866: Buffer msg;
867: u_int type, expected_id, count, id;
868: char *filename, *longname;
869: Attrib *a;
870:
1.23 djm 871: expected_id = id = conn->msg_id++;
1.93 djm 872: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 873:
874: buffer_init(&msg);
875:
1.93 djm 876: get_msg(conn, &msg);
1.11 djm 877: type = buffer_get_char(&msg);
878: id = buffer_get_int(&msg);
879:
880: if (id != expected_id)
1.33 deraadt 881: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 882:
883: if (type == SSH2_FXP_STATUS) {
884: u_int status = buffer_get_int(&msg);
885:
886: error("Couldn't readlink: %s", fx2txt(status));
1.95 markus 887: buffer_free(&msg);
1.11 djm 888: return(NULL);
889: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 890: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 891: SSH2_FXP_NAME, type);
892:
893: count = buffer_get_int(&msg);
894: if (count != 1)
895: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
896:
897: filename = buffer_get_string(&msg, NULL);
898: longname = buffer_get_string(&msg, NULL);
899: a = decode_attrib(&msg);
900:
901: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
902:
1.98 djm 903: free(longname);
1.11 djm 904:
905: buffer_free(&msg);
906:
907: return(filename);
1.82 djm 908: }
909: #endif
910:
911: int
1.84 dtucker 912: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 913: int quiet)
914: {
915: Buffer msg;
916: u_int id;
917:
918: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
919: error("Server does not support statvfs@openssh.com extension");
920: return -1;
921: }
922:
923: id = conn->msg_id++;
924:
925: buffer_init(&msg);
926: buffer_clear(&msg);
927: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
928: buffer_put_int(&msg, id);
929: buffer_put_cstring(&msg, "statvfs@openssh.com");
930: buffer_put_cstring(&msg, path);
1.93 djm 931: send_msg(conn, &msg);
1.82 djm 932: buffer_free(&msg);
933:
1.93 djm 934: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 935: }
936:
937: #ifdef notyet
938: int
939: do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len,
1.84 dtucker 940: struct sftp_statvfs *st, int quiet)
1.82 djm 941: {
942: Buffer msg;
943: u_int id;
944:
945: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
946: error("Server does not support fstatvfs@openssh.com extension");
947: return -1;
948: }
949:
950: id = conn->msg_id++;
951:
952: buffer_init(&msg);
953: buffer_clear(&msg);
954: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
955: buffer_put_int(&msg, id);
956: buffer_put_cstring(&msg, "fstatvfs@openssh.com");
957: buffer_put_string(&msg, handle, handle_len);
1.93 djm 958: send_msg(conn, &msg);
1.82 djm 959: buffer_free(&msg);
960:
1.93 djm 961: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 962: }
1.78 chl 963: #endif
1.1 djm 964:
1.21 djm 965: static void
1.93 djm 966: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
967: u_int len, char *handle, u_int handle_len)
1.21 djm 968: {
969: Buffer msg;
1.28 markus 970:
1.21 djm 971: buffer_init(&msg);
972: buffer_clear(&msg);
973: buffer_put_char(&msg, SSH2_FXP_READ);
974: buffer_put_int(&msg, id);
975: buffer_put_string(&msg, handle, handle_len);
976: buffer_put_int64(&msg, offset);
977: buffer_put_int(&msg, len);
1.93 djm 978: send_msg(conn, &msg);
1.21 djm 979: buffer_free(&msg);
1.28 markus 980: }
1.21 djm 981:
1.1 djm 982: int
1.23 djm 983: do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
1.101 djm 984: Attrib *a, int pflag, int resume)
1.1 djm 985: {
1.89 djm 986: Attrib junk;
1.21 djm 987: Buffer msg;
1.1 djm 988: char *handle;
1.101 djm 989: int local_fd = -1, status = 0, write_error;
990: int read_error, write_errno, reordered = 0;
991: u_int64_t offset = 0, size, highwater;
1.55 djm 992: u_int handle_len, mode, type, id, buflen, num_req, max_req;
1.39 fgsch 993: off_t progress_counter;
1.101 djm 994: struct stat st;
1.21 djm 995: struct request {
996: u_int id;
997: u_int len;
998: u_int64_t offset;
1.28 markus 999: TAILQ_ENTRY(request) tq;
1.21 djm 1000: };
1001: TAILQ_HEAD(reqhead, request) requests;
1002: struct request *req;
1003:
1004: TAILQ_INIT(&requests);
1.1 djm 1005:
1.89 djm 1006: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1007: return -1;
1.1 djm 1008:
1.86 djm 1009: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1010: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1011: mode = a->perm & 0777;
1.1 djm 1012: else
1013: mode = 0666;
1014:
1.14 djm 1015: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1016: (!S_ISREG(a->perm))) {
1017: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1018: return(-1);
1019: }
1020:
1.21 djm 1021: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1022: size = a->size;
1023: else
1024: size = 0;
1025:
1.23 djm 1026: buflen = conn->transfer_buflen;
1.1 djm 1027: buffer_init(&msg);
1028:
1029: /* Send open request */
1.23 djm 1030: id = conn->msg_id++;
1.1 djm 1031: buffer_put_char(&msg, SSH2_FXP_OPEN);
1032: buffer_put_int(&msg, id);
1033: buffer_put_cstring(&msg, remote_path);
1034: buffer_put_int(&msg, SSH2_FXF_READ);
1035: attrib_clear(&junk); /* Send empty attributes */
1036: encode_attrib(&msg, &junk);
1.93 djm 1037: send_msg(conn, &msg);
1.33 deraadt 1038: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1039:
1.93 djm 1040: handle = get_handle(conn, id, &handle_len,
1.88 djm 1041: "remote open(\"%s\")", remote_path);
1.1 djm 1042: if (handle == NULL) {
1043: buffer_free(&msg);
1044: return(-1);
1045: }
1046:
1.101 djm 1047: local_fd = open(local_path, O_WRONLY | O_CREAT | (resume ? : O_TRUNC),
1.99 dtucker 1048: mode | S_IWUSR);
1.23 djm 1049: if (local_fd == -1) {
1050: error("Couldn't open local file \"%s\" for writing: %s",
1051: local_path, strerror(errno));
1.101 djm 1052: goto fail;
1053: }
1054: offset = highwater = 0;
1055: if (resume) {
1056: if (fstat(local_fd, &st) == -1) {
1057: error("Unable to stat local file \"%s\": %s",
1058: local_path, strerror(errno));
1059: goto fail;
1060: }
1061: if ((size_t)st.st_size > size) {
1062: error("Unable to resume download of \"%s\": "
1063: "local file is larger than remote", local_path);
1064: fail:
1065: do_close(conn, handle, handle_len);
1066: buffer_free(&msg);
1067: free(handle);
1068: return -1;
1069: }
1070: offset = highwater = st.st_size;
1.23 djm 1071: }
1072:
1.1 djm 1073: /* Read from remote and write to local */
1.101 djm 1074: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1075: max_req = 1;
1.101 djm 1076: progress_counter = offset;
1.39 fgsch 1077:
1.47 djm 1078: if (showprogress && size != 0)
1079: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1080:
1.21 djm 1081: while (num_req > 0 || max_req > 0) {
1082: char *data;
1.1 djm 1083: u_int len;
1084:
1.49 djm 1085: /*
1.51 deraadt 1086: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1087: * allow outstanding requests to drain gracefully
1088: */
1089: if (interrupted) {
1090: if (num_req == 0) /* If we haven't started yet... */
1091: break;
1092: max_req = 0;
1093: }
1094:
1.21 djm 1095: /* Send some more requests */
1096: while (num_req < max_req) {
1.28 markus 1097: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1098: (unsigned long long)offset,
1099: (unsigned long long)offset + buflen - 1,
1100: num_req, max_req);
1.101.2.1! djm 1101: req = xcalloc(1, sizeof(*req));
1.23 djm 1102: req->id = conn->msg_id++;
1.21 djm 1103: req->len = buflen;
1104: req->offset = offset;
1105: offset += buflen;
1106: num_req++;
1107: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1108: send_read_request(conn, req->id, req->offset,
1.21 djm 1109: req->len, handle, handle_len);
1110: }
1.1 djm 1111:
1112: buffer_clear(&msg);
1.93 djm 1113: get_msg(conn, &msg);
1.1 djm 1114: type = buffer_get_char(&msg);
1115: id = buffer_get_int(&msg);
1.33 deraadt 1116: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1117:
1118: /* Find the request in our queue */
1.53 deraadt 1119: for (req = TAILQ_FIRST(&requests);
1.21 djm 1120: req != NULL && req->id != id;
1121: req = TAILQ_NEXT(req, tq))
1122: ;
1123: if (req == NULL)
1124: fatal("Unexpected reply %u", id);
1125:
1126: switch (type) {
1127: case SSH2_FXP_STATUS:
1.5 djm 1128: status = buffer_get_int(&msg);
1.21 djm 1129: if (status != SSH2_FX_EOF)
1130: read_error = 1;
1131: max_req = 0;
1132: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1133: free(req);
1.21 djm 1134: num_req--;
1135: break;
1136: case SSH2_FXP_DATA:
1137: data = buffer_get_string(&msg, &len);
1.26 itojun 1138: debug3("Received data %llu -> %llu",
1.28 markus 1139: (unsigned long long)req->offset,
1.26 itojun 1140: (unsigned long long)req->offset + len - 1);
1.21 djm 1141: if (len > req->len)
1142: fatal("Received more data than asked for "
1.37 deraadt 1143: "%u > %u", len, req->len);
1.21 djm 1144: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1145: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1146: !write_error) {
1147: write_errno = errno;
1148: write_error = 1;
1149: max_req = 0;
1150: }
1.101 djm 1151: else if (!reordered && req->offset <= highwater)
1152: highwater = req->offset + len;
1153: else if (!reordered && req->offset > highwater)
1154: reordered = 1;
1.39 fgsch 1155: progress_counter += len;
1.98 djm 1156: free(data);
1.1 djm 1157:
1.21 djm 1158: if (len == req->len) {
1159: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1160: free(req);
1.21 djm 1161: num_req--;
1162: } else {
1163: /* Resend the request for the missing data */
1164: debug3("Short data block, re-requesting "
1.26 itojun 1165: "%llu -> %llu (%2d)",
1.28 markus 1166: (unsigned long long)req->offset + len,
1.27 itojun 1167: (unsigned long long)req->offset +
1168: req->len - 1, num_req);
1.23 djm 1169: req->id = conn->msg_id++;
1.21 djm 1170: req->len -= len;
1171: req->offset += len;
1.93 djm 1172: send_read_request(conn, req->id,
1.23 djm 1173: req->offset, req->len, handle, handle_len);
1.21 djm 1174: /* Reduce the request size */
1175: if (len < buflen)
1176: buflen = MAX(MIN_READ_SIZE, len);
1177: }
1178: if (max_req > 0) { /* max_req = 0 iff EOF received */
1179: if (size > 0 && offset > size) {
1180: /* Only one request at a time
1181: * after the expected EOF */
1182: debug3("Finish at %llu (%2d)",
1.26 itojun 1183: (unsigned long long)offset,
1184: num_req);
1.21 djm 1185: max_req = 1;
1.49 djm 1186: } else if (max_req <= conn->num_requests) {
1.21 djm 1187: ++max_req;
1188: }
1.1 djm 1189: }
1.21 djm 1190: break;
1191: default:
1.33 deraadt 1192: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1193: SSH2_FXP_DATA, type);
1194: }
1.21 djm 1195: }
1.1 djm 1196:
1.39 fgsch 1197: if (showprogress && size)
1198: stop_progress_meter();
1199:
1.21 djm 1200: /* Sanity check */
1201: if (TAILQ_FIRST(&requests) != NULL)
1202: fatal("Transfer complete, but requests still in queue");
1.101 djm 1203: /* Truncate at highest contiguous point to avoid holes on interrupt */
1204: if (read_error || write_error || interrupted) {
1205: if (reordered && resume) {
1206: error("Unable to resume download of \"%s\": "
1207: "server reordered requests", local_path);
1208: }
1209: debug("truncating at %llu", (unsigned long long)highwater);
1210: ftruncate(local_fd, highwater);
1211: }
1.21 djm 1212: if (read_error) {
1.28 markus 1213: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1214: remote_path, fx2txt(status));
1.23 djm 1215: do_close(conn, handle, handle_len);
1.21 djm 1216: } else if (write_error) {
1217: error("Couldn't write to \"%s\": %s", local_path,
1218: strerror(write_errno));
1219: status = -1;
1.23 djm 1220: do_close(conn, handle, handle_len);
1.21 djm 1221: } else {
1.23 djm 1222: status = do_close(conn, handle, handle_len);
1.101 djm 1223: if (interrupted)
1224: status = -1;
1.21 djm 1225: /* Override umask and utimes if asked */
1226: if (pflag && fchmod(local_fd, mode) == -1)
1227: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1228: strerror(errno));
1.21 djm 1229: if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1230: struct timeval tv[2];
1231: tv[0].tv_sec = a->atime;
1232: tv[1].tv_sec = a->mtime;
1233: tv[0].tv_usec = tv[1].tv_usec = 0;
1234: if (utimes(local_path, tv) == -1)
1235: error("Can't set times on \"%s\": %s",
1.37 deraadt 1236: local_path, strerror(errno));
1.1 djm 1237: }
1.10 djm 1238: }
1.5 djm 1239: close(local_fd);
1240: buffer_free(&msg);
1.98 djm 1241: free(handle);
1.23 djm 1242:
1243: return(status);
1.1 djm 1244: }
1245:
1.89 djm 1246: static int
1247: download_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1.101 djm 1248: Attrib *dirattrib, int pflag, int printflag, int depth, int resume)
1.89 djm 1249: {
1250: int i, ret = 0;
1251: SFTP_DIRENT **dir_entries;
1252: char *filename, *new_src, *new_dst;
1253: mode_t mode = 0777;
1254:
1255: if (depth >= MAX_DIR_DEPTH) {
1256: error("Maximum directory depth exceeded: %d levels", depth);
1257: return -1;
1258: }
1259:
1260: if (dirattrib == NULL &&
1261: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1262: error("Unable to stat remote directory \"%s\"", src);
1263: return -1;
1264: }
1265: if (!S_ISDIR(dirattrib->perm)) {
1266: error("\"%s\" is not a directory", src);
1267: return -1;
1268: }
1269: if (printflag)
1270: printf("Retrieving %s\n", src);
1271:
1272: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1273: mode = dirattrib->perm & 01777;
1274: else {
1275: debug("Server did not send permissions for "
1276: "directory \"%s\"", dst);
1277: }
1278:
1279: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1280: error("mkdir %s: %s", dst, strerror(errno));
1281: return -1;
1282: }
1283:
1284: if (do_readdir(conn, src, &dir_entries) == -1) {
1285: error("%s: Failed to get directory contents", src);
1286: return -1;
1287: }
1288:
1289: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1290: filename = dir_entries[i]->filename;
1291:
1292: new_dst = path_append(dst, filename);
1293: new_src = path_append(src, filename);
1294:
1295: if (S_ISDIR(dir_entries[i]->a.perm)) {
1296: if (strcmp(filename, ".") == 0 ||
1297: strcmp(filename, "..") == 0)
1298: continue;
1299: if (download_dir_internal(conn, new_src, new_dst,
1300: &(dir_entries[i]->a), pflag, printflag,
1.101 djm 1301: depth + 1, resume) == -1)
1.89 djm 1302: ret = -1;
1303: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1304: if (do_download(conn, new_src, new_dst,
1.101 djm 1305: &(dir_entries[i]->a), pflag, resume) == -1) {
1.89 djm 1306: error("Download of file %s to %s failed",
1307: new_src, new_dst);
1308: ret = -1;
1309: }
1310: } else
1311: logit("%s: not a regular file\n", new_src);
1312:
1.98 djm 1313: free(new_dst);
1314: free(new_src);
1.89 djm 1315: }
1316:
1317: if (pflag) {
1318: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1319: struct timeval tv[2];
1320: tv[0].tv_sec = dirattrib->atime;
1321: tv[1].tv_sec = dirattrib->mtime;
1322: tv[0].tv_usec = tv[1].tv_usec = 0;
1323: if (utimes(dst, tv) == -1)
1324: error("Can't set times on \"%s\": %s",
1325: dst, strerror(errno));
1326: } else
1327: debug("Server did not send times for directory "
1328: "\"%s\"", dst);
1329: }
1330:
1331: free_sftp_dirents(dir_entries);
1332:
1333: return ret;
1334: }
1335:
1336: int
1337: download_dir(struct sftp_conn *conn, char *src, char *dst,
1.101 djm 1338: Attrib *dirattrib, int pflag, int printflag, int resume)
1.89 djm 1339: {
1340: char *src_canon;
1341: int ret;
1342:
1343: if ((src_canon = do_realpath(conn, src)) == NULL) {
1344: error("Unable to canonicalise path \"%s\"", src);
1345: return -1;
1346: }
1347:
1348: ret = download_dir_internal(conn, src_canon, dst,
1.101 djm 1349: dirattrib, pflag, printflag, 0, resume);
1.98 djm 1350: free(src_canon);
1.89 djm 1351: return ret;
1352: }
1353:
1.1 djm 1354: int
1.23 djm 1355: do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
1356: int pflag)
1.1 djm 1357: {
1.80 djm 1358: int local_fd;
1359: int status = SSH2_FX_OK;
1.22 djm 1360: u_int handle_len, id, type;
1.100 dtucker 1361: off_t offset, progress_counter;
1.20 djm 1362: char *handle, *data;
1.1 djm 1363: Buffer msg;
1364: struct stat sb;
1365: Attrib a;
1.21 djm 1366: u_int32_t startid;
1367: u_int32_t ackid;
1.22 djm 1368: struct outstanding_ack {
1369: u_int id;
1370: u_int len;
1.77 djm 1371: off_t offset;
1.28 markus 1372: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1373: };
1374: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1375: struct outstanding_ack *ack = NULL;
1.22 djm 1376:
1377: TAILQ_INIT(&acks);
1.1 djm 1378:
1379: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1380: error("Couldn't open local file \"%s\" for reading: %s",
1381: local_path, strerror(errno));
1382: return(-1);
1383: }
1384: if (fstat(local_fd, &sb) == -1) {
1385: error("Couldn't fstat local file \"%s\": %s",
1386: local_path, strerror(errno));
1.41 djm 1387: close(local_fd);
1388: return(-1);
1389: }
1390: if (!S_ISREG(sb.st_mode)) {
1391: error("%s is not a regular file", local_path);
1.1 djm 1392: close(local_fd);
1393: return(-1);
1394: }
1395: stat_to_attrib(&sb, &a);
1396:
1397: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1398: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1399: a.perm &= 0777;
1400: if (!pflag)
1401: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1402:
1403: buffer_init(&msg);
1404:
1405: /* Send open request */
1.23 djm 1406: id = conn->msg_id++;
1.1 djm 1407: buffer_put_char(&msg, SSH2_FXP_OPEN);
1408: buffer_put_int(&msg, id);
1409: buffer_put_cstring(&msg, remote_path);
1410: buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC);
1411: encode_attrib(&msg, &a);
1.93 djm 1412: send_msg(conn, &msg);
1.33 deraadt 1413: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1414:
1415: buffer_clear(&msg);
1416:
1.93 djm 1417: handle = get_handle(conn, id, &handle_len,
1.88 djm 1418: "remote open(\"%s\")", remote_path);
1.1 djm 1419: if (handle == NULL) {
1420: close(local_fd);
1421: buffer_free(&msg);
1.80 djm 1422: return -1;
1.1 djm 1423: }
1424:
1.21 djm 1425: startid = ackid = id + 1;
1.23 djm 1426: data = xmalloc(conn->transfer_buflen);
1.20 djm 1427:
1.1 djm 1428: /* Read from local and write to remote */
1.100 dtucker 1429: offset = progress_counter = 0;
1.39 fgsch 1430: if (showprogress)
1.100 dtucker 1431: start_progress_meter(local_path, sb.st_size,
1432: &progress_counter);
1.39 fgsch 1433:
1.19 deraadt 1434: for (;;) {
1.1 djm 1435: int len;
1436:
1437: /*
1.51 deraadt 1438: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1439: * thus losing the last block of the file.
1.51 deraadt 1440: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1441: * server to drain.
1.1 djm 1442: */
1.80 djm 1443: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1444: len = 0;
1445: else do
1.23 djm 1446: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1447: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1448:
1449: if (len == -1)
1450: fatal("Couldn't read from \"%s\": %s", local_path,
1451: strerror(errno));
1.21 djm 1452:
1453: if (len != 0) {
1.101.2.1! djm 1454: ack = xcalloc(1, sizeof(*ack));
1.22 djm 1455: ack->id = ++id;
1456: ack->offset = offset;
1457: ack->len = len;
1458: TAILQ_INSERT_TAIL(&acks, ack, tq);
1459:
1.21 djm 1460: buffer_clear(&msg);
1461: buffer_put_char(&msg, SSH2_FXP_WRITE);
1.22 djm 1462: buffer_put_int(&msg, ack->id);
1.21 djm 1463: buffer_put_string(&msg, handle, handle_len);
1464: buffer_put_int64(&msg, offset);
1465: buffer_put_string(&msg, data, len);
1.93 djm 1466: send_msg(conn, &msg);
1.33 deraadt 1467: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1468: id, (unsigned long long)offset, len);
1.22 djm 1469: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1470: break;
1471:
1.22 djm 1472: if (ack == NULL)
1473: fatal("Unexpected ACK %u", id);
1474:
1.28 markus 1475: if (id == startid || len == 0 ||
1.23 djm 1476: id - ackid >= conn->num_requests) {
1.32 markus 1477: u_int r_id;
1.31 djm 1478:
1.22 djm 1479: buffer_clear(&msg);
1.93 djm 1480: get_msg(conn, &msg);
1.22 djm 1481: type = buffer_get_char(&msg);
1.31 djm 1482: r_id = buffer_get_int(&msg);
1.22 djm 1483:
1484: if (type != SSH2_FXP_STATUS)
1485: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1486: "got %d", SSH2_FXP_STATUS, type);
1487:
1488: status = buffer_get_int(&msg);
1489: debug3("SSH2_FXP_STATUS %d", status);
1490:
1491: /* Find the request in our queue */
1.53 deraadt 1492: for (ack = TAILQ_FIRST(&acks);
1.31 djm 1493: ack != NULL && ack->id != r_id;
1.22 djm 1494: ack = TAILQ_NEXT(ack, tq))
1495: ;
1496: if (ack == NULL)
1.33 deraadt 1497: fatal("Can't find request for ID %u", r_id);
1.22 djm 1498: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1499: debug3("In write loop, ack for %u %u bytes at %lld",
1500: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1501: ++ackid;
1.100 dtucker 1502: progress_counter += ack->len;
1.98 djm 1503: free(ack);
1.1 djm 1504: }
1505: offset += len;
1.77 djm 1506: if (offset < 0)
1507: fatal("%s: offset < 0", __func__);
1.1 djm 1508: }
1.80 djm 1509: buffer_free(&msg);
1510:
1.39 fgsch 1511: if (showprogress)
1512: stop_progress_meter();
1.98 djm 1513: free(data);
1.1 djm 1514:
1.80 djm 1515: if (status != SSH2_FX_OK) {
1516: error("Couldn't write to remote file \"%s\": %s",
1517: remote_path, fx2txt(status));
1518: status = -1;
1519: }
1520:
1.1 djm 1521: if (close(local_fd) == -1) {
1522: error("Couldn't close local file \"%s\": %s", local_path,
1523: strerror(errno));
1.5 djm 1524: status = -1;
1.1 djm 1525: }
1526:
1.10 djm 1527: /* Override umask and utimes if asked */
1528: if (pflag)
1.23 djm 1529: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1530:
1.80 djm 1531: if (do_close(conn, handle, handle_len) != SSH2_FX_OK)
1532: status = -1;
1.98 djm 1533: free(handle);
1.5 djm 1534:
1.80 djm 1535: return status;
1.1 djm 1536: }
1.89 djm 1537:
1538: static int
1539: upload_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1540: int pflag, int printflag, int depth)
1541: {
1542: int ret = 0, status;
1543: DIR *dirp;
1544: struct dirent *dp;
1545: char *filename, *new_src, *new_dst;
1546: struct stat sb;
1547: Attrib a;
1548:
1549: if (depth >= MAX_DIR_DEPTH) {
1550: error("Maximum directory depth exceeded: %d levels", depth);
1551: return -1;
1552: }
1553:
1554: if (stat(src, &sb) == -1) {
1555: error("Couldn't stat directory \"%s\": %s",
1556: src, strerror(errno));
1557: return -1;
1558: }
1559: if (!S_ISDIR(sb.st_mode)) {
1560: error("\"%s\" is not a directory", src);
1561: return -1;
1562: }
1563: if (printflag)
1564: printf("Entering %s\n", src);
1565:
1566: attrib_clear(&a);
1567: stat_to_attrib(&sb, &a);
1568: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1569: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1570: a.perm &= 01777;
1571: if (!pflag)
1572: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 1573:
1.89 djm 1574: status = do_mkdir(conn, dst, &a, 0);
1575: /*
1576: * we lack a portable status for errno EEXIST,
1577: * so if we get a SSH2_FX_FAILURE back we must check
1578: * if it was created successfully.
1579: */
1580: if (status != SSH2_FX_OK) {
1581: if (status != SSH2_FX_FAILURE)
1582: return -1;
1.101 djm 1583: if (do_stat(conn, dst, 0) == NULL)
1.89 djm 1584: return -1;
1585: }
1586:
1587: if ((dirp = opendir(src)) == NULL) {
1588: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1589: return -1;
1590: }
1.101 djm 1591:
1.89 djm 1592: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1593: if (dp->d_ino == 0)
1594: continue;
1595: filename = dp->d_name;
1596: new_dst = path_append(dst, filename);
1597: new_src = path_append(src, filename);
1598:
1.90 dtucker 1599: if (lstat(new_src, &sb) == -1) {
1600: logit("%s: lstat failed: %s", filename,
1601: strerror(errno));
1602: ret = -1;
1603: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1604: if (strcmp(filename, ".") == 0 ||
1605: strcmp(filename, "..") == 0)
1606: continue;
1607:
1608: if (upload_dir_internal(conn, new_src, new_dst,
1.92 djm 1609: pflag, printflag, depth + 1) == -1)
1.89 djm 1610: ret = -1;
1.90 dtucker 1611: } else if (S_ISREG(sb.st_mode)) {
1.89 djm 1612: if (do_upload(conn, new_src, new_dst, pflag) == -1) {
1613: error("Uploading of file %s to %s failed!",
1614: new_src, new_dst);
1615: ret = -1;
1616: }
1617: } else
1618: logit("%s: not a regular file\n", filename);
1.98 djm 1619: free(new_dst);
1620: free(new_src);
1.89 djm 1621: }
1622:
1623: do_setstat(conn, dst, &a);
1624:
1625: (void) closedir(dirp);
1626: return ret;
1627: }
1628:
1629: int
1630: upload_dir(struct sftp_conn *conn, char *src, char *dst, int printflag,
1631: int pflag)
1632: {
1633: char *dst_canon;
1634: int ret;
1635:
1636: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1637: error("Unable to canonicalise path \"%s\"", dst);
1638: return -1;
1639: }
1640:
1641: ret = upload_dir_internal(conn, src, dst_canon, pflag, printflag, 0);
1.98 djm 1642: free(dst_canon);
1.89 djm 1643: return ret;
1644: }
1645:
1646: char *
1647: path_append(char *p1, char *p2)
1648: {
1649: char *ret;
1650: size_t len = strlen(p1) + strlen(p2) + 2;
1651:
1652: ret = xmalloc(len);
1653: strlcpy(ret, p1, len);
1654: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1655: strlcat(ret, "/", len);
1656: strlcat(ret, p2, len);
1657:
1658: return(ret);
1659: }
1660:
![[BACK]](/icons/back.gif){kind=icon}
Return to sftp-client.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh