Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.122
1.122 ! djm 1: /* $OpenBSD: sftp-client.c,v 1.121 2016/02/11 02:21:34 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:
1.117 deraadt 23: #include <sys/param.h> /* MIN MAX */
1.74 deraadt 24: #include <sys/types.h>
1.93 djm 25: #include <sys/poll.h>
1.21 djm 26: #include <sys/queue.h>
1.60 stevesk 27: #include <sys/stat.h>
1.71 stevesk 28: #include <sys/time.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>
1.109 dtucker 38: #include <stdlib.h>
1.69 stevesk 39: #include <string.h>
1.68 stevesk 40: #include <unistd.h>
1.1 djm 41:
1.74 deraadt 42: #include "xmalloc.h"
1.116 djm 43: #include "ssherr.h"
44: #include "sshbuf.h"
1.1 djm 45: #include "log.h"
46: #include "atomicio.h"
1.39 fgsch 47: #include "progressmeter.h"
1.64 djm 48: #include "misc.h"
1.1 djm 49:
50: #include "sftp.h"
51: #include "sftp-common.h"
52: #include "sftp-client.h"
53:
1.49 djm 54: extern volatile sig_atomic_t interrupted;
1.39 fgsch 55: extern int showprogress;
56:
1.59 david 57: /* Minimum amount of data to read at a time */
1.21 djm 58: #define MIN_READ_SIZE 512
59:
1.89 djm 60: /* Maximum depth to descend in directory trees */
61: #define MAX_DIR_DEPTH 64
62:
1.23 djm 63: struct sftp_conn {
64: int fd_in;
65: int fd_out;
66: u_int transfer_buflen;
67: u_int num_requests;
68: u_int version;
69: u_int msg_id;
1.82 djm 70: #define SFTP_EXT_POSIX_RENAME 0x00000001
71: #define SFTP_EXT_STATVFS 0x00000002
72: #define SFTP_EXT_FSTATVFS 0x00000004
1.94 djm 73: #define SFTP_EXT_HARDLINK 0x00000008
1.107 djm 74: #define SFTP_EXT_FSYNC 0x00000010
1.81 djm 75: u_int exts;
1.93 djm 76: u_int64_t limit_kbps;
77: struct bwlimit bwlimit_in, bwlimit_out;
1.23 djm 78: };
1.4 djm 79:
1.116 djm 80: static u_char *
81: get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
1.93 djm 82: const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
83:
84: /* ARGSUSED */
85: static int
86: sftpio(void *_bwlimit, size_t amount)
87: {
88: struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
89:
90: bandwidth_limit(bwlimit, amount);
91: return 0;
92: }
1.88 djm 93:
1.17 itojun 94: static void
1.116 djm 95: send_msg(struct sftp_conn *conn, struct sshbuf *m)
1.1 djm 96: {
1.40 djm 97: u_char mlen[4];
1.65 djm 98: struct iovec iov[2];
1.40 djm 99:
1.116 djm 100: if (sshbuf_len(m) > SFTP_MAX_MSG_LENGTH)
101: fatal("Outbound message too long %zu", sshbuf_len(m));
1.40 djm 102:
103: /* Send length first */
1.116 djm 104: put_u32(mlen, sshbuf_len(m));
1.65 djm 105: iov[0].iov_base = mlen;
106: iov[0].iov_len = sizeof(mlen);
1.116 djm 107: iov[1].iov_base = (u_char *)sshbuf_ptr(m);
108: iov[1].iov_len = sshbuf_len(m);
1.74 deraadt 109:
1.93 djm 110: if (atomiciov6(writev, conn->fd_out, iov, 2,
1.101 djm 111: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
1.116 djm 112: sshbuf_len(m) + sizeof(mlen))
1.1 djm 113: fatal("Couldn't send packet: %s", strerror(errno));
114:
1.116 djm 115: sshbuf_reset(m);
1.1 djm 116: }
117:
1.17 itojun 118: static void
1.116 djm 119: get_msg(struct sftp_conn *conn, struct sshbuf *m)
1.1 djm 120: {
1.40 djm 121: u_int msg_len;
1.116 djm 122: u_char *p;
123: int r;
1.1 djm 124:
1.116 djm 125: if ((r = sshbuf_reserve(m, 4, &p)) != 0)
126: fatal("%s: buffer error: %s", __func__, ssh_err(r));
127: if (atomicio6(read, conn->fd_in, p, 4,
1.93 djm 128: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) {
1.54 avsm 129: if (errno == EPIPE)
130: fatal("Connection closed");
131: else
132: fatal("Couldn't read packet: %s", strerror(errno));
133: }
1.1 djm 134:
1.116 djm 135: if ((r = sshbuf_get_u32(m, &msg_len)) != 0)
136: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.58 djm 137: if (msg_len > SFTP_MAX_MSG_LENGTH)
1.33 deraadt 138: fatal("Received message too long %u", msg_len);
1.1 djm 139:
1.116 djm 140: if ((r = sshbuf_reserve(m, msg_len, &p)) != 0)
141: fatal("%s: buffer error: %s", __func__, ssh_err(r));
142: if (atomicio6(read, conn->fd_in, p, msg_len,
1.93 djm 143: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
144: != msg_len) {
1.54 avsm 145: if (errno == EPIPE)
146: fatal("Connection closed");
147: else
148: fatal("Read packet: %s", strerror(errno));
149: }
1.1 djm 150: }
151:
1.17 itojun 152: static void
1.116 djm 153: send_string_request(struct sftp_conn *conn, u_int id, u_int code, const char *s,
1.1 djm 154: u_int len)
155: {
1.116 djm 156: struct sshbuf *msg;
157: int r;
1.1 djm 158:
1.116 djm 159: if ((msg = sshbuf_new()) == NULL)
160: fatal("%s: sshbuf_new failed", __func__);
161: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
162: (r = sshbuf_put_u32(msg, id)) != 0 ||
163: (r = sshbuf_put_string(msg, s, len)) != 0)
164: fatal("%s: buffer error: %s", __func__, ssh_err(r));
165: send_msg(conn, msg);
1.93 djm 166: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.116 djm 167: sshbuf_free(msg);
1.1 djm 168: }
169:
1.17 itojun 170: static void
1.93 djm 171: send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
1.116 djm 172: const void *s, u_int len, Attrib *a)
1.1 djm 173: {
1.116 djm 174: struct sshbuf *msg;
175: int r;
1.1 djm 176:
1.116 djm 177: if ((msg = sshbuf_new()) == NULL)
178: fatal("%s: sshbuf_new failed", __func__);
179: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
180: (r = sshbuf_put_u32(msg, id)) != 0 ||
181: (r = sshbuf_put_string(msg, s, len)) != 0 ||
182: (r = encode_attrib(msg, a)) != 0)
183: fatal("%s: buffer error: %s", __func__, ssh_err(r));
184: send_msg(conn, msg);
1.93 djm 185: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.116 djm 186: sshbuf_free(msg);
1.1 djm 187: }
188:
1.17 itojun 189: static u_int
1.93 djm 190: get_status(struct sftp_conn *conn, u_int expected_id)
1.1 djm 191: {
1.116 djm 192: struct sshbuf *msg;
193: u_char type;
194: u_int id, status;
195: int r;
1.1 djm 196:
1.116 djm 197: if ((msg = sshbuf_new()) == NULL)
198: fatal("%s: sshbuf_new failed", __func__);
199: get_msg(conn, msg);
200: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
201: (r = sshbuf_get_u32(msg, &id)) != 0)
202: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 203:
204: if (id != expected_id)
1.33 deraadt 205: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 206: if (type != SSH2_FXP_STATUS)
1.33 deraadt 207: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 208: SSH2_FXP_STATUS, type);
209:
1.116 djm 210: if ((r = sshbuf_get_u32(msg, &status)) != 0)
211: fatal("%s: buffer error: %s", __func__, ssh_err(r));
212: sshbuf_free(msg);
1.1 djm 213:
1.33 deraadt 214: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 215:
1.93 djm 216: return status;
1.1 djm 217: }
218:
1.116 djm 219: static u_char *
220: get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
1.93 djm 221: const char *errfmt, ...)
1.1 djm 222: {
1.116 djm 223: struct sshbuf *msg;
224: u_int id, status;
225: u_char type;
226: u_char *handle;
227: char errmsg[256];
1.88 djm 228: va_list args;
1.116 djm 229: int r;
1.88 djm 230:
231: va_start(args, errfmt);
232: if (errfmt != NULL)
233: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
234: va_end(args);
1.1 djm 235:
1.116 djm 236: if ((msg = sshbuf_new()) == NULL)
237: fatal("%s: sshbuf_new failed", __func__);
238: get_msg(conn, msg);
239: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
240: (r = sshbuf_get_u32(msg, &id)) != 0)
241: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 242:
243: if (id != expected_id)
1.88 djm 244: fatal("%s: ID mismatch (%u != %u)",
245: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 246: if (type == SSH2_FXP_STATUS) {
1.116 djm 247: if ((r = sshbuf_get_u32(msg, &status)) != 0)
248: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.88 djm 249: if (errfmt != NULL)
250: error("%s: %s", errmsg, fx2txt(status));
1.116 djm 251: sshbuf_free(msg);
1.1 djm 252: return(NULL);
253: } else if (type != SSH2_FXP_HANDLE)
1.88 djm 254: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
255: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 256:
1.116 djm 257: if ((r = sshbuf_get_string(msg, &handle, len)) != 0)
258: fatal("%s: buffer error: %s", __func__, ssh_err(r));
259: sshbuf_free(msg);
1.1 djm 260:
1.116 djm 261: return handle;
1.1 djm 262: }
263:
1.17 itojun 264: static Attrib *
1.93 djm 265: get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
1.1 djm 266: {
1.116 djm 267: struct sshbuf *msg;
268: u_int id;
269: u_char type;
270: int r;
271: static Attrib a;
272:
273: if ((msg = sshbuf_new()) == NULL)
274: fatal("%s: sshbuf_new failed", __func__);
275: get_msg(conn, msg);
276:
277: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
278: (r = sshbuf_get_u32(msg, &id)) != 0)
279: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 280:
1.33 deraadt 281: debug3("Received stat reply T:%u I:%u", type, id);
1.1 djm 282: if (id != expected_id)
1.33 deraadt 283: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 284: if (type == SSH2_FXP_STATUS) {
1.116 djm 285: u_int status;
1.1 djm 286:
1.116 djm 287: if ((r = sshbuf_get_u32(msg, &status)) != 0)
288: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.14 djm 289: if (quiet)
290: debug("Couldn't stat remote file: %s", fx2txt(status));
291: else
292: error("Couldn't stat remote file: %s", fx2txt(status));
1.116 djm 293: sshbuf_free(msg);
1.1 djm 294: return(NULL);
295: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 296: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 297: SSH2_FXP_ATTRS, type);
298: }
1.116 djm 299: if ((r = decode_attrib(msg, &a)) != 0) {
300: error("%s: couldn't decode attrib: %s", __func__, ssh_err(r));
301: sshbuf_free(msg);
302: return NULL;
303: }
304: sshbuf_free(msg);
1.1 djm 305:
1.116 djm 306: return &a;
1.1 djm 307: }
308:
1.82 djm 309: static int
1.93 djm 310: get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
311: u_int expected_id, int quiet)
1.82 djm 312: {
1.116 djm 313: struct sshbuf *msg;
314: u_char type;
315: u_int id;
316: u_int64_t flag;
317: int r;
1.82 djm 318:
1.116 djm 319: if ((msg = sshbuf_new()) == NULL)
320: fatal("%s: sshbuf_new failed", __func__);
321: get_msg(conn, msg);
322:
323: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
324: (r = sshbuf_get_u32(msg, &id)) != 0)
325: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 326:
327: debug3("Received statvfs reply T:%u I:%u", type, id);
328: if (id != expected_id)
329: fatal("ID mismatch (%u != %u)", id, expected_id);
330: if (type == SSH2_FXP_STATUS) {
1.116 djm 331: u_int status;
1.82 djm 332:
1.116 djm 333: if ((r = sshbuf_get_u32(msg, &status)) != 0)
334: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 335: if (quiet)
336: debug("Couldn't statvfs: %s", fx2txt(status));
337: else
338: error("Couldn't statvfs: %s", fx2txt(status));
1.116 djm 339: sshbuf_free(msg);
1.82 djm 340: return -1;
341: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
342: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
343: SSH2_FXP_EXTENDED_REPLY, type);
344: }
345:
1.114 tedu 346: memset(st, 0, sizeof(*st));
1.116 djm 347: if ((r = sshbuf_get_u64(msg, &st->f_bsize)) != 0 ||
348: (r = sshbuf_get_u64(msg, &st->f_frsize)) != 0 ||
349: (r = sshbuf_get_u64(msg, &st->f_blocks)) != 0 ||
350: (r = sshbuf_get_u64(msg, &st->f_bfree)) != 0 ||
351: (r = sshbuf_get_u64(msg, &st->f_bavail)) != 0 ||
352: (r = sshbuf_get_u64(msg, &st->f_files)) != 0 ||
353: (r = sshbuf_get_u64(msg, &st->f_ffree)) != 0 ||
354: (r = sshbuf_get_u64(msg, &st->f_favail)) != 0 ||
355: (r = sshbuf_get_u64(msg, &st->f_fsid)) != 0 ||
356: (r = sshbuf_get_u64(msg, &flag)) != 0 ||
357: (r = sshbuf_get_u64(msg, &st->f_namemax)) != 0)
358: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 359:
360: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
361: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
362:
1.116 djm 363: sshbuf_free(msg);
1.82 djm 364:
365: return 0;
366: }
367:
1.23 djm 368: struct sftp_conn *
1.93 djm 369: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
370: u_int64_t limit_kbps)
1.1 djm 371: {
1.116 djm 372: u_char type;
373: struct sshbuf *msg;
1.23 djm 374: struct sftp_conn *ret;
1.116 djm 375: int r;
1.1 djm 376:
1.103 djm 377: ret = xcalloc(1, sizeof(*ret));
378: ret->msg_id = 1;
1.93 djm 379: ret->fd_in = fd_in;
380: ret->fd_out = fd_out;
381: ret->transfer_buflen = transfer_buflen;
382: ret->num_requests = num_requests;
383: ret->exts = 0;
384: ret->limit_kbps = 0;
385:
1.116 djm 386: if ((msg = sshbuf_new()) == NULL)
387: fatal("%s: sshbuf_new failed", __func__);
388: if ((r = sshbuf_put_u8(msg, SSH2_FXP_INIT)) != 0 ||
389: (r = sshbuf_put_u32(msg, SSH2_FILEXFER_VERSION)) != 0)
390: fatal("%s: buffer error: %s", __func__, ssh_err(r));
391: send_msg(ret, msg);
1.1 djm 392:
1.116 djm 393: sshbuf_reset(msg);
1.1 djm 394:
1.116 djm 395: get_msg(ret, msg);
1.1 djm 396:
1.3 stevesk 397: /* Expecting a VERSION reply */
1.116 djm 398: if ((r = sshbuf_get_u8(msg, &type)) != 0)
399: fatal("%s: buffer error: %s", __func__, ssh_err(r));
400: if (type != SSH2_FXP_VERSION) {
1.33 deraadt 401: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 402: type);
1.116 djm 403: sshbuf_free(msg);
1.119 jsg 404: free(ret);
1.23 djm 405: return(NULL);
1.1 djm 406: }
1.116 djm 407: if ((r = sshbuf_get_u32(msg, &ret->version)) != 0)
408: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 409:
1.93 djm 410: debug2("Remote version: %u", ret->version);
1.1 djm 411:
412: /* Check for extensions */
1.116 djm 413: while (sshbuf_len(msg) > 0) {
414: char *name;
415: u_char *value;
416: size_t vlen;
1.85 djm 417: int known = 0;
1.1 djm 418:
1.116 djm 419: if ((r = sshbuf_get_cstring(msg, &name, NULL)) != 0 ||
420: (r = sshbuf_get_string(msg, &value, &vlen)) != 0)
421: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 422: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.116 djm 423: strcmp((char *)value, "1") == 0) {
1.93 djm 424: ret->exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 425: known = 1;
426: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
1.116 djm 427: strcmp((char *)value, "2") == 0) {
1.93 djm 428: ret->exts |= SFTP_EXT_STATVFS;
1.85 djm 429: known = 1;
1.94 djm 430: } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
1.116 djm 431: strcmp((char *)value, "2") == 0) {
1.93 djm 432: ret->exts |= SFTP_EXT_FSTATVFS;
1.85 djm 433: known = 1;
1.94 djm 434: } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
1.116 djm 435: strcmp((char *)value, "1") == 0) {
1.94 djm 436: ret->exts |= SFTP_EXT_HARDLINK;
437: known = 1;
1.116 djm 438: } else if (strcmp(name, "fsync@openssh.com") == 0 &&
439: strcmp((char *)value, "1") == 0) {
440: ret->exts |= SFTP_EXT_FSYNC;
441: known = 1;
1.85 djm 442: }
443: if (known) {
444: debug2("Server supports extension \"%s\" revision %s",
445: name, value);
446: } else {
447: debug2("Unrecognised server extension \"%s\"", name);
448: }
1.98 djm 449: free(name);
450: free(value);
1.1 djm 451: }
452:
1.116 djm 453: sshbuf_free(msg);
1.11 djm 454:
1.23 djm 455: /* Some filexfer v.0 servers don't support large packets */
1.93 djm 456: if (ret->version == 0)
1.29 markus 457: ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
1.23 djm 458:
1.93 djm 459: ret->limit_kbps = limit_kbps;
460: if (ret->limit_kbps > 0) {
461: bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
462: ret->transfer_buflen);
463: bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
464: ret->transfer_buflen);
465: }
466:
467: return ret;
1.23 djm 468: }
469:
470: u_int
471: sftp_proto_version(struct sftp_conn *conn)
472: {
1.93 djm 473: return conn->version;
1.1 djm 474: }
475:
476: int
1.116 djm 477: do_close(struct sftp_conn *conn, const u_char *handle, u_int handle_len)
1.1 djm 478: {
479: u_int id, status;
1.116 djm 480: struct sshbuf *msg;
481: int r;
1.1 djm 482:
1.116 djm 483: if ((msg = sshbuf_new()) == NULL)
484: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 485:
1.23 djm 486: id = conn->msg_id++;
1.116 djm 487: if ((r = sshbuf_put_u8(msg, SSH2_FXP_CLOSE)) != 0 ||
488: (r = sshbuf_put_u32(msg, id)) != 0 ||
489: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
490: fatal("%s: buffer error: %s", __func__, ssh_err(r));
491: send_msg(conn, msg);
1.33 deraadt 492: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 493:
1.93 djm 494: status = get_status(conn, id);
1.1 djm 495: if (status != SSH2_FX_OK)
496: error("Couldn't close file: %s", fx2txt(status));
497:
1.116 djm 498: sshbuf_free(msg);
1.1 djm 499:
1.116 djm 500: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 501: }
502:
1.12 djm 503:
1.17 itojun 504: static int
1.116 djm 505: do_lsreaddir(struct sftp_conn *conn, const char *path, int print_flag,
1.12 djm 506: SFTP_DIRENT ***dir)
1.1 djm 507: {
1.116 djm 508: struct sshbuf *msg;
509: u_int count, id, i, expected_id, ents = 0;
510: size_t handle_len;
511: u_char type;
1.1 djm 512: char *handle;
1.111 djm 513: int status = SSH2_FX_FAILURE;
1.116 djm 514: int r;
1.111 djm 515:
516: if (dir)
517: *dir = NULL;
1.1 djm 518:
1.23 djm 519: id = conn->msg_id++;
1.1 djm 520:
1.116 djm 521: if ((msg = sshbuf_new()) == NULL)
522: fatal("%s: sshbuf_new failed", __func__);
523: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPENDIR)) != 0 ||
524: (r = sshbuf_put_u32(msg, id)) != 0 ||
525: (r = sshbuf_put_cstring(msg, path)) != 0)
526: fatal("%s: buffer error: %s", __func__, ssh_err(r));
527: send_msg(conn, msg);
1.1 djm 528:
1.93 djm 529: handle = get_handle(conn, id, &handle_len,
1.88 djm 530: "remote readdir(\"%s\")", path);
1.96 markus 531: if (handle == NULL) {
1.116 djm 532: sshbuf_free(msg);
1.93 djm 533: return -1;
1.96 markus 534: }
1.1 djm 535:
1.12 djm 536: if (dir) {
537: ents = 0;
1.108 djm 538: *dir = xcalloc(1, sizeof(**dir));
1.12 djm 539: (*dir)[0] = NULL;
540: }
541:
1.49 djm 542: for (; !interrupted;) {
1.23 djm 543: id = expected_id = conn->msg_id++;
1.1 djm 544:
1.33 deraadt 545: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 546:
1.116 djm 547: sshbuf_reset(msg);
548: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READDIR)) != 0 ||
549: (r = sshbuf_put_u32(msg, id)) != 0 ||
550: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
551: fatal("%s: buffer error: %s", __func__, ssh_err(r));
552: send_msg(conn, msg);
553:
554: sshbuf_reset(msg);
555:
556: get_msg(conn, msg);
557:
558: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
559: (r = sshbuf_get_u32(msg, &id)) != 0)
560: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 561:
1.33 deraadt 562: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 563:
564: if (id != expected_id)
1.33 deraadt 565: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 566:
567: if (type == SSH2_FXP_STATUS) {
1.116 djm 568: u_int rstatus;
569:
570: if ((r = sshbuf_get_u32(msg, &rstatus)) != 0)
571: fatal("%s: buffer error: %s",
572: __func__, ssh_err(r));
573: debug3("Received SSH2_FXP_STATUS %d", rstatus);
574: if (rstatus == SSH2_FX_EOF)
1.1 djm 575: break;
1.116 djm 576: error("Couldn't read directory: %s", fx2txt(rstatus));
1.111 djm 577: goto out;
1.1 djm 578: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 579: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 580: SSH2_FXP_NAME, type);
581:
1.116 djm 582: if ((r = sshbuf_get_u32(msg, &count)) != 0)
583: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.7 markus 584: if (count == 0)
585: break;
1.8 stevesk 586: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 587: for (i = 0; i < count; i++) {
1.1 djm 588: char *filename, *longname;
1.116 djm 589: Attrib a;
1.1 djm 590:
1.116 djm 591: if ((r = sshbuf_get_cstring(msg, &filename,
592: NULL)) != 0 ||
593: (r = sshbuf_get_cstring(msg, &longname,
594: NULL)) != 0)
595: fatal("%s: buffer error: %s",
596: __func__, ssh_err(r));
597: if ((r = decode_attrib(msg, &a)) != 0) {
598: error("%s: couldn't decode attrib: %s",
599: __func__, ssh_err(r));
600: free(filename);
601: free(longname);
602: sshbuf_free(msg);
603: return -1;
604: }
1.1 djm 605:
1.105 djm 606: if (print_flag)
1.12 djm 607: printf("%s\n", longname);
608:
1.89 djm 609: /*
610: * Directory entries should never contain '/'
611: * These can be used to attack recursive ops
612: * (e.g. send '../../../../etc/passwd')
613: */
614: if (strchr(filename, '/') != NULL) {
615: error("Server sent suspect path \"%s\" "
616: "during readdir of \"%s\"", filename, path);
1.111 djm 617: } else if (dir) {
1.118 deraadt 618: *dir = xreallocarray(*dir, ents + 2, sizeof(**dir));
1.108 djm 619: (*dir)[ents] = xcalloc(1, sizeof(***dir));
1.12 djm 620: (*dir)[ents]->filename = xstrdup(filename);
621: (*dir)[ents]->longname = xstrdup(longname);
1.116 djm 622: memcpy(&(*dir)[ents]->a, &a, sizeof(a));
1.12 djm 623: (*dir)[++ents] = NULL;
624: }
1.98 djm 625: free(filename);
626: free(longname);
1.1 djm 627: }
628: }
1.111 djm 629: status = 0;
1.1 djm 630:
1.111 djm 631: out:
1.116 djm 632: sshbuf_free(msg);
1.23 djm 633: do_close(conn, handle, handle_len);
1.98 djm 634: free(handle);
1.1 djm 635:
1.111 djm 636: if (status != 0 && dir != NULL) {
637: /* Don't return results on error */
638: free_sftp_dirents(*dir);
639: *dir = NULL;
640: } else if (interrupted && dir != NULL && *dir != NULL) {
641: /* Don't return partial matches on interrupt */
1.49 djm 642: free_sftp_dirents(*dir);
1.108 djm 643: *dir = xcalloc(1, sizeof(**dir));
1.49 djm 644: **dir = NULL;
645: }
646:
1.111 djm 647: return status;
1.12 djm 648: }
649:
650: int
1.116 djm 651: do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir)
1.12 djm 652: {
1.23 djm 653: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 654: }
655:
656: void free_sftp_dirents(SFTP_DIRENT **s)
657: {
658: int i;
1.19 deraadt 659:
1.111 djm 660: if (s == NULL)
661: return;
1.19 deraadt 662: for (i = 0; s[i]; i++) {
1.98 djm 663: free(s[i]->filename);
664: free(s[i]->longname);
665: free(s[i]);
1.12 djm 666: }
1.98 djm 667: free(s);
1.12 djm 668: }
669:
670: int
1.116 djm 671: do_rm(struct sftp_conn *conn, const char *path)
1.1 djm 672: {
673: u_int status, id;
674:
675: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
676:
1.23 djm 677: id = conn->msg_id++;
1.93 djm 678: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
679: status = get_status(conn, id);
1.1 djm 680: if (status != SSH2_FX_OK)
681: error("Couldn't delete file: %s", fx2txt(status));
1.116 djm 682: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 683: }
684:
685: int
1.116 djm 686: do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag)
1.1 djm 687: {
688: u_int status, id;
689:
1.23 djm 690: id = conn->msg_id++;
1.93 djm 691: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 692: strlen(path), a);
693:
1.93 djm 694: status = get_status(conn, id);
1.105 djm 695: if (status != SSH2_FX_OK && print_flag)
1.1 djm 696: error("Couldn't create directory: %s", fx2txt(status));
697:
1.116 djm 698: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 699: }
700:
701: int
1.116 djm 702: do_rmdir(struct sftp_conn *conn, const char *path)
1.1 djm 703: {
704: u_int status, id;
705:
1.23 djm 706: id = conn->msg_id++;
1.93 djm 707: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 708: strlen(path));
1.1 djm 709:
1.93 djm 710: status = get_status(conn, id);
1.1 djm 711: if (status != SSH2_FX_OK)
712: error("Couldn't remove directory: %s", fx2txt(status));
713:
1.116 djm 714: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 715: }
716:
717: Attrib *
1.116 djm 718: do_stat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 719: {
720: u_int id;
721:
1.23 djm 722: id = conn->msg_id++;
723:
1.93 djm 724: send_string_request(conn, id,
1.28 markus 725: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 726: path, strlen(path));
727:
1.93 djm 728: return(get_decode_stat(conn, id, quiet));
1.1 djm 729: }
730:
731: Attrib *
1.116 djm 732: do_lstat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 733: {
734: u_int id;
735:
1.23 djm 736: if (conn->version == 0) {
737: if (quiet)
738: debug("Server version does not support lstat operation");
739: else
1.43 itojun 740: logit("Server version does not support lstat operation");
1.30 markus 741: return(do_stat(conn, path, quiet));
1.23 djm 742: }
743:
744: id = conn->msg_id++;
1.93 djm 745: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 746: strlen(path));
747:
1.93 djm 748: return(get_decode_stat(conn, id, quiet));
1.1 djm 749: }
750:
1.78 chl 751: #ifdef notyet
1.1 djm 752: Attrib *
1.116 djm 753: do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
754: int quiet)
1.1 djm 755: {
756: u_int id;
757:
1.23 djm 758: id = conn->msg_id++;
1.93 djm 759: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 760: handle_len);
761:
1.93 djm 762: return(get_decode_stat(conn, id, quiet));
1.1 djm 763: }
1.78 chl 764: #endif
1.1 djm 765:
766: int
1.116 djm 767: do_setstat(struct sftp_conn *conn, const char *path, Attrib *a)
1.1 djm 768: {
769: u_int status, id;
770:
1.23 djm 771: id = conn->msg_id++;
1.93 djm 772: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 773: strlen(path), a);
774:
1.93 djm 775: status = get_status(conn, id);
1.1 djm 776: if (status != SSH2_FX_OK)
777: error("Couldn't setstat on \"%s\": %s", path,
778: fx2txt(status));
779:
1.116 djm 780: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 781: }
782:
783: int
1.116 djm 784: do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.1 djm 785: Attrib *a)
786: {
787: u_int status, id;
788:
1.23 djm 789: id = conn->msg_id++;
1.93 djm 790: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 791: handle_len, a);
792:
1.93 djm 793: status = get_status(conn, id);
1.1 djm 794: if (status != SSH2_FX_OK)
795: error("Couldn't fsetstat: %s", fx2txt(status));
796:
1.116 djm 797: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 798: }
799:
800: char *
1.116 djm 801: do_realpath(struct sftp_conn *conn, const char *path)
1.1 djm 802: {
1.116 djm 803: struct sshbuf *msg;
804: u_int expected_id, count, id;
1.1 djm 805: char *filename, *longname;
1.116 djm 806: Attrib a;
807: u_char type;
808: int r;
1.1 djm 809:
1.23 djm 810: expected_id = id = conn->msg_id++;
1.93 djm 811: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 812: strlen(path));
1.1 djm 813:
1.116 djm 814: if ((msg = sshbuf_new()) == NULL)
815: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 816:
1.116 djm 817: get_msg(conn, msg);
818: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
819: (r = sshbuf_get_u32(msg, &id)) != 0)
820: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 821:
822: if (id != expected_id)
1.33 deraadt 823: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 824:
825: if (type == SSH2_FXP_STATUS) {
1.116 djm 826: u_int status;
1.1 djm 827:
1.116 djm 828: if ((r = sshbuf_get_u32(msg, &status)) != 0)
829: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.107 djm 830: error("Couldn't canonicalize: %s", fx2txt(status));
1.116 djm 831: sshbuf_free(msg);
1.91 djm 832: return NULL;
1.1 djm 833: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 834: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 835: SSH2_FXP_NAME, type);
836:
1.116 djm 837: if ((r = sshbuf_get_u32(msg, &count)) != 0)
838: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 839: if (count != 1)
840: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
841:
1.116 djm 842: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
843: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
844: (r = decode_attrib(msg, &a)) != 0)
845: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 846:
1.97 dtucker 847: debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
1.116 djm 848: (unsigned long)a.size);
1.1 djm 849:
1.98 djm 850: free(longname);
1.1 djm 851:
1.116 djm 852: sshbuf_free(msg);
1.1 djm 853:
854: return(filename);
855: }
856:
857: int
1.116 djm 858: do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath,
1.102 djm 859: int force_legacy)
1.1 djm 860: {
1.116 djm 861: struct sshbuf *msg;
1.1 djm 862: u_int status, id;
1.116 djm 863: int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
1.1 djm 864:
1.116 djm 865: if ((msg = sshbuf_new()) == NULL)
866: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 867:
868: /* Send rename request */
1.23 djm 869: id = conn->msg_id++;
1.102 djm 870: if (use_ext) {
1.116 djm 871: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
872: (r = sshbuf_put_u32(msg, id)) != 0 ||
873: (r = sshbuf_put_cstring(msg,
874: "posix-rename@openssh.com")) != 0)
875: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.81 djm 876: } else {
1.116 djm 877: if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 ||
878: (r = sshbuf_put_u32(msg, id)) != 0)
879: fatal("%s: buffer error: %s", __func__, ssh_err(r));
880: }
881: if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
882: (r = sshbuf_put_cstring(msg, newpath)) != 0)
883: fatal("%s: buffer error: %s", __func__, ssh_err(r));
884: send_msg(conn, msg);
1.81 djm 885: debug3("Sent message %s \"%s\" -> \"%s\"",
1.116 djm 886: use_ext ? "posix-rename@openssh.com" :
887: "SSH2_FXP_RENAME", oldpath, newpath);
888: sshbuf_free(msg);
1.1 djm 889:
1.93 djm 890: status = get_status(conn, id);
1.1 djm 891: if (status != SSH2_FX_OK)
1.23 djm 892: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 893: newpath, fx2txt(status));
894:
1.116 djm 895: return status == SSH2_FX_OK ? 0 : -1;
1.94 djm 896: }
897:
898: int
1.116 djm 899: do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.94 djm 900: {
1.116 djm 901: struct sshbuf *msg;
1.94 djm 902: u_int status, id;
1.116 djm 903: int r;
1.94 djm 904:
905: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
906: error("Server does not support hardlink@openssh.com extension");
907: return -1;
908: }
909:
1.116 djm 910: if ((msg = sshbuf_new()) == NULL)
911: fatal("%s: sshbuf_new failed", __func__);
1.95 markus 912:
913: /* Send link request */
914: id = conn->msg_id++;
1.116 djm 915: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
916: (r = sshbuf_put_u32(msg, id)) != 0 ||
917: (r = sshbuf_put_cstring(msg, "hardlink@openssh.com")) != 0 ||
918: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
919: (r = sshbuf_put_cstring(msg, newpath)) != 0)
920: fatal("%s: buffer error: %s", __func__, ssh_err(r));
921: send_msg(conn, msg);
1.94 djm 922: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
923: oldpath, newpath);
1.116 djm 924: sshbuf_free(msg);
1.94 djm 925:
926: status = get_status(conn, id);
927: if (status != SSH2_FX_OK)
928: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 929: newpath, fx2txt(status));
1.1 djm 930:
1.116 djm 931: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 932: }
933:
934: int
1.116 djm 935: do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.11 djm 936: {
1.116 djm 937: struct sshbuf *msg;
1.11 djm 938: u_int status, id;
1.116 djm 939: int r;
1.11 djm 940:
1.23 djm 941: if (conn->version < 3) {
942: error("This server does not support the symlink operation");
943: return(SSH2_FX_OP_UNSUPPORTED);
944: }
945:
1.116 djm 946: if ((msg = sshbuf_new()) == NULL)
947: fatal("%s: sshbuf_new failed", __func__);
1.11 djm 948:
1.48 djm 949: /* Send symlink request */
1.23 djm 950: id = conn->msg_id++;
1.116 djm 951: if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 ||
952: (r = sshbuf_put_u32(msg, id)) != 0 ||
953: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
954: (r = sshbuf_put_cstring(msg, newpath)) != 0)
955: fatal("%s: buffer error: %s", __func__, ssh_err(r));
956: send_msg(conn, msg);
1.11 djm 957: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
958: newpath);
1.116 djm 959: sshbuf_free(msg);
1.11 djm 960:
1.93 djm 961: status = get_status(conn, id);
1.11 djm 962: if (status != SSH2_FX_OK)
1.36 markus 963: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 964: newpath, fx2txt(status));
1.11 djm 965:
1.116 djm 966: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 967: }
968:
1.107 djm 969: int
1.116 djm 970: do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len)
1.107 djm 971: {
1.116 djm 972: struct sshbuf *msg;
1.107 djm 973: u_int status, id;
1.116 djm 974: int r;
1.107 djm 975:
976: /* Silently return if the extension is not supported */
977: if ((conn->exts & SFTP_EXT_FSYNC) == 0)
978: return -1;
979:
980: /* Send fsync request */
1.116 djm 981: if ((msg = sshbuf_new()) == NULL)
982: fatal("%s: sshbuf_new failed", __func__);
1.107 djm 983: id = conn->msg_id++;
1.116 djm 984: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
985: (r = sshbuf_put_u32(msg, id)) != 0 ||
986: (r = sshbuf_put_cstring(msg, "fsync@openssh.com")) != 0 ||
987: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
988: fatal("%s: buffer error: %s", __func__, ssh_err(r));
989: send_msg(conn, msg);
1.107 djm 990: debug3("Sent message fsync@openssh.com I:%u", id);
1.116 djm 991: sshbuf_free(msg);
1.107 djm 992:
993: status = get_status(conn, id);
994: if (status != SSH2_FX_OK)
995: error("Couldn't sync file: %s", fx2txt(status));
996:
997: return status;
998: }
999:
1.78 chl 1000: #ifdef notyet
1.11 djm 1001: char *
1.116 djm 1002: do_readlink(struct sftp_conn *conn, const char *path)
1.11 djm 1003: {
1.116 djm 1004: struct sshbuf *msg;
1005: u_int expected_id, count, id;
1.11 djm 1006: char *filename, *longname;
1.116 djm 1007: Attrib a;
1008: u_char type;
1009: int r;
1.11 djm 1010:
1.23 djm 1011: expected_id = id = conn->msg_id++;
1.93 djm 1012: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 1013:
1.116 djm 1014: if ((msg = sshbuf_new()) == NULL)
1015: fatal("%s: sshbuf_new failed", __func__);
1.11 djm 1016:
1.116 djm 1017: get_msg(conn, msg);
1018: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1019: (r = sshbuf_get_u32(msg, &id)) != 0)
1020: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1021:
1022: if (id != expected_id)
1.33 deraadt 1023: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 1024:
1025: if (type == SSH2_FXP_STATUS) {
1.116 djm 1026: u_int status;
1.11 djm 1027:
1.116 djm 1028: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1029: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1030: error("Couldn't readlink: %s", fx2txt(status));
1.116 djm 1031: sshbuf_free(msg);
1.11 djm 1032: return(NULL);
1033: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 1034: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 1035: SSH2_FXP_NAME, type);
1036:
1.116 djm 1037: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1038: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1039: if (count != 1)
1040: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
1041:
1.116 djm 1042: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
1043: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
1044: (r = decode_attrib(msg, &a)) != 0)
1045: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1046:
1047: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
1048:
1.98 djm 1049: free(longname);
1.11 djm 1050:
1.116 djm 1051: sshbuf_free(msg);
1.11 djm 1052:
1.116 djm 1053: return filename;
1.82 djm 1054: }
1055: #endif
1056:
1057: int
1.84 dtucker 1058: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 1059: int quiet)
1060: {
1.116 djm 1061: struct sshbuf *msg;
1.82 djm 1062: u_int id;
1.116 djm 1063: int r;
1.82 djm 1064:
1065: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
1066: error("Server does not support statvfs@openssh.com extension");
1067: return -1;
1068: }
1069:
1070: id = conn->msg_id++;
1071:
1.116 djm 1072: if ((msg = sshbuf_new()) == NULL)
1073: fatal("%s: sshbuf_new failed", __func__);
1074: sshbuf_reset(msg);
1075: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1076: (r = sshbuf_put_u32(msg, id)) != 0 ||
1077: (r = sshbuf_put_cstring(msg, "statvfs@openssh.com")) != 0 ||
1078: (r = sshbuf_put_cstring(msg, path)) != 0)
1079: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1080: send_msg(conn, msg);
1081: sshbuf_free(msg);
1.82 djm 1082:
1.93 djm 1083: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 1084: }
1085:
1086: #ifdef notyet
1087: int
1.116 djm 1088: do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.84 dtucker 1089: struct sftp_statvfs *st, int quiet)
1.82 djm 1090: {
1.116 djm 1091: struct sshbuf *msg;
1.82 djm 1092: u_int id;
1093:
1094: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
1095: error("Server does not support fstatvfs@openssh.com extension");
1096: return -1;
1097: }
1098:
1099: id = conn->msg_id++;
1100:
1.116 djm 1101: if ((msg = sshbuf_new()) == NULL)
1102: fatal("%s: sshbuf_new failed", __func__);
1103: sshbuf_reset(msg);
1104: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1105: (r = sshbuf_put_u32(msg, id)) != 0 ||
1106: (r = sshbuf_put_cstring(msg, "fstatvfs@openssh.com")) != 0 ||
1107: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1108: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1109: send_msg(conn, msg);
1110: sshbuf_free(msg);
1.82 djm 1111:
1.93 djm 1112: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 1113: }
1.78 chl 1114: #endif
1.1 djm 1115:
1.21 djm 1116: static void
1.93 djm 1117: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
1.116 djm 1118: u_int len, const u_char *handle, u_int handle_len)
1.21 djm 1119: {
1.116 djm 1120: struct sshbuf *msg;
1121: int r;
1.28 markus 1122:
1.116 djm 1123: if ((msg = sshbuf_new()) == NULL)
1124: fatal("%s: sshbuf_new failed", __func__);
1125: sshbuf_reset(msg);
1126: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 ||
1127: (r = sshbuf_put_u32(msg, id)) != 0 ||
1128: (r = sshbuf_put_string(msg, handle, handle_len)) != 0 ||
1129: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1130: (r = sshbuf_put_u32(msg, len)) != 0)
1131: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1132: send_msg(conn, msg);
1133: sshbuf_free(msg);
1.28 markus 1134: }
1.21 djm 1135:
1.1 djm 1136: int
1.116 djm 1137: do_download(struct sftp_conn *conn, const char *remote_path,
1138: const char *local_path, Attrib *a, int preserve_flag, int resume_flag,
1139: int fsync_flag)
1.1 djm 1140: {
1.89 djm 1141: Attrib junk;
1.116 djm 1142: struct sshbuf *msg;
1143: u_char *handle;
1144: int local_fd = -1, write_error;
1145: int read_error, write_errno, reordered = 0, r;
1.101 djm 1146: u_int64_t offset = 0, size, highwater;
1.116 djm 1147: u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK;
1.39 fgsch 1148: off_t progress_counter;
1.116 djm 1149: size_t handle_len;
1.101 djm 1150: struct stat st;
1.21 djm 1151: struct request {
1152: u_int id;
1.116 djm 1153: size_t len;
1.21 djm 1154: u_int64_t offset;
1.28 markus 1155: TAILQ_ENTRY(request) tq;
1.21 djm 1156: };
1157: TAILQ_HEAD(reqhead, request) requests;
1158: struct request *req;
1.116 djm 1159: u_char type;
1.21 djm 1160:
1161: TAILQ_INIT(&requests);
1.1 djm 1162:
1.89 djm 1163: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1164: return -1;
1.1 djm 1165:
1.86 djm 1166: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1167: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1168: mode = a->perm & 0777;
1.1 djm 1169: else
1170: mode = 0666;
1171:
1.14 djm 1172: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1173: (!S_ISREG(a->perm))) {
1174: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1175: return(-1);
1176: }
1177:
1.21 djm 1178: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1179: size = a->size;
1180: else
1181: size = 0;
1182:
1.23 djm 1183: buflen = conn->transfer_buflen;
1.116 djm 1184: if ((msg = sshbuf_new()) == NULL)
1185: fatal("%s: sshbuf_new failed", __func__);
1186:
1187: attrib_clear(&junk); /* Send empty attributes */
1.1 djm 1188:
1189: /* Send open request */
1.23 djm 1190: id = conn->msg_id++;
1.116 djm 1191: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1192: (r = sshbuf_put_u32(msg, id)) != 0 ||
1193: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1194: (r = sshbuf_put_u32(msg, SSH2_FXF_READ)) != 0 ||
1195: (r = encode_attrib(msg, &junk)) != 0)
1196: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1197: send_msg(conn, msg);
1.33 deraadt 1198: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1199:
1.93 djm 1200: handle = get_handle(conn, id, &handle_len,
1.88 djm 1201: "remote open(\"%s\")", remote_path);
1.1 djm 1202: if (handle == NULL) {
1.116 djm 1203: sshbuf_free(msg);
1.1 djm 1204: return(-1);
1205: }
1206:
1.105 djm 1207: local_fd = open(local_path,
1208: O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
1.23 djm 1209: if (local_fd == -1) {
1210: error("Couldn't open local file \"%s\" for writing: %s",
1211: local_path, strerror(errno));
1.101 djm 1212: goto fail;
1213: }
1214: offset = highwater = 0;
1.105 djm 1215: if (resume_flag) {
1.101 djm 1216: if (fstat(local_fd, &st) == -1) {
1217: error("Unable to stat local file \"%s\": %s",
1218: local_path, strerror(errno));
1219: goto fail;
1220: }
1.113 djm 1221: if (st.st_size < 0) {
1222: error("\"%s\" has negative size", local_path);
1223: goto fail;
1224: }
1225: if ((u_int64_t)st.st_size > size) {
1.101 djm 1226: error("Unable to resume download of \"%s\": "
1227: "local file is larger than remote", local_path);
1228: fail:
1229: do_close(conn, handle, handle_len);
1.116 djm 1230: sshbuf_free(msg);
1.101 djm 1231: free(handle);
1.110 djm 1232: if (local_fd != -1)
1233: close(local_fd);
1.101 djm 1234: return -1;
1235: }
1236: offset = highwater = st.st_size;
1.23 djm 1237: }
1238:
1.1 djm 1239: /* Read from remote and write to local */
1.101 djm 1240: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1241: max_req = 1;
1.101 djm 1242: progress_counter = offset;
1.39 fgsch 1243:
1.47 djm 1244: if (showprogress && size != 0)
1245: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1246:
1.21 djm 1247: while (num_req > 0 || max_req > 0) {
1.116 djm 1248: u_char *data;
1249: size_t len;
1.1 djm 1250:
1.49 djm 1251: /*
1.51 deraadt 1252: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1253: * allow outstanding requests to drain gracefully
1254: */
1255: if (interrupted) {
1256: if (num_req == 0) /* If we haven't started yet... */
1257: break;
1258: max_req = 0;
1259: }
1260:
1.21 djm 1261: /* Send some more requests */
1262: while (num_req < max_req) {
1.28 markus 1263: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1264: (unsigned long long)offset,
1265: (unsigned long long)offset + buflen - 1,
1266: num_req, max_req);
1.108 djm 1267: req = xcalloc(1, sizeof(*req));
1.23 djm 1268: req->id = conn->msg_id++;
1.21 djm 1269: req->len = buflen;
1270: req->offset = offset;
1271: offset += buflen;
1272: num_req++;
1273: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1274: send_read_request(conn, req->id, req->offset,
1.21 djm 1275: req->len, handle, handle_len);
1276: }
1.1 djm 1277:
1.116 djm 1278: sshbuf_reset(msg);
1279: get_msg(conn, msg);
1280: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1281: (r = sshbuf_get_u32(msg, &id)) != 0)
1282: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.33 deraadt 1283: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1284:
1285: /* Find the request in our queue */
1.53 deraadt 1286: for (req = TAILQ_FIRST(&requests);
1.21 djm 1287: req != NULL && req->id != id;
1288: req = TAILQ_NEXT(req, tq))
1289: ;
1290: if (req == NULL)
1291: fatal("Unexpected reply %u", id);
1292:
1293: switch (type) {
1294: case SSH2_FXP_STATUS:
1.116 djm 1295: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1296: fatal("%s: buffer error: %s",
1297: __func__, ssh_err(r));
1.21 djm 1298: if (status != SSH2_FX_EOF)
1299: read_error = 1;
1300: max_req = 0;
1301: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1302: free(req);
1.21 djm 1303: num_req--;
1304: break;
1305: case SSH2_FXP_DATA:
1.116 djm 1306: if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
1307: fatal("%s: buffer error: %s",
1308: __func__, ssh_err(r));
1.26 itojun 1309: debug3("Received data %llu -> %llu",
1.28 markus 1310: (unsigned long long)req->offset,
1.26 itojun 1311: (unsigned long long)req->offset + len - 1);
1.21 djm 1312: if (len > req->len)
1313: fatal("Received more data than asked for "
1.116 djm 1314: "%zu > %zu", len, req->len);
1.21 djm 1315: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1316: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1317: !write_error) {
1318: write_errno = errno;
1319: write_error = 1;
1320: max_req = 0;
1321: }
1.101 djm 1322: else if (!reordered && req->offset <= highwater)
1323: highwater = req->offset + len;
1324: else if (!reordered && req->offset > highwater)
1325: reordered = 1;
1.39 fgsch 1326: progress_counter += len;
1.98 djm 1327: free(data);
1.1 djm 1328:
1.21 djm 1329: if (len == req->len) {
1330: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1331: free(req);
1.21 djm 1332: num_req--;
1333: } else {
1334: /* Resend the request for the missing data */
1335: debug3("Short data block, re-requesting "
1.26 itojun 1336: "%llu -> %llu (%2d)",
1.28 markus 1337: (unsigned long long)req->offset + len,
1.27 itojun 1338: (unsigned long long)req->offset +
1339: req->len - 1, num_req);
1.23 djm 1340: req->id = conn->msg_id++;
1.21 djm 1341: req->len -= len;
1342: req->offset += len;
1.93 djm 1343: send_read_request(conn, req->id,
1.23 djm 1344: req->offset, req->len, handle, handle_len);
1.21 djm 1345: /* Reduce the request size */
1346: if (len < buflen)
1347: buflen = MAX(MIN_READ_SIZE, len);
1348: }
1349: if (max_req > 0) { /* max_req = 0 iff EOF received */
1350: if (size > 0 && offset > size) {
1351: /* Only one request at a time
1352: * after the expected EOF */
1353: debug3("Finish at %llu (%2d)",
1.26 itojun 1354: (unsigned long long)offset,
1355: num_req);
1.21 djm 1356: max_req = 1;
1.49 djm 1357: } else if (max_req <= conn->num_requests) {
1.21 djm 1358: ++max_req;
1359: }
1.1 djm 1360: }
1.21 djm 1361: break;
1362: default:
1.33 deraadt 1363: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1364: SSH2_FXP_DATA, type);
1365: }
1.21 djm 1366: }
1.1 djm 1367:
1.39 fgsch 1368: if (showprogress && size)
1369: stop_progress_meter();
1370:
1.21 djm 1371: /* Sanity check */
1372: if (TAILQ_FIRST(&requests) != NULL)
1373: fatal("Transfer complete, but requests still in queue");
1.101 djm 1374: /* Truncate at highest contiguous point to avoid holes on interrupt */
1375: if (read_error || write_error || interrupted) {
1.105 djm 1376: if (reordered && resume_flag) {
1.101 djm 1377: error("Unable to resume download of \"%s\": "
1378: "server reordered requests", local_path);
1379: }
1380: debug("truncating at %llu", (unsigned long long)highwater);
1.120 djm 1381: if (ftruncate(local_fd, highwater) == -1)
1382: error("ftruncate \"%s\": %s", local_path,
1383: strerror(errno));
1.101 djm 1384: }
1.21 djm 1385: if (read_error) {
1.28 markus 1386: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1387: remote_path, fx2txt(status));
1.103 djm 1388: status = -1;
1.23 djm 1389: do_close(conn, handle, handle_len);
1.21 djm 1390: } else if (write_error) {
1391: error("Couldn't write to \"%s\": %s", local_path,
1392: strerror(write_errno));
1.116 djm 1393: status = SSH2_FX_FAILURE;
1.23 djm 1394: do_close(conn, handle, handle_len);
1.21 djm 1395: } else {
1.116 djm 1396: if (do_close(conn, handle, handle_len) != 0 || interrupted)
1397: status = SSH2_FX_FAILURE;
1398: else
1399: status = SSH2_FX_OK;
1.21 djm 1400: /* Override umask and utimes if asked */
1.105 djm 1401: if (preserve_flag && fchmod(local_fd, mode) == -1)
1.21 djm 1402: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1403: strerror(errno));
1.105 djm 1404: if (preserve_flag &&
1405: (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1.21 djm 1406: struct timeval tv[2];
1407: tv[0].tv_sec = a->atime;
1408: tv[1].tv_sec = a->mtime;
1409: tv[0].tv_usec = tv[1].tv_usec = 0;
1410: if (utimes(local_path, tv) == -1)
1411: error("Can't set times on \"%s\": %s",
1.37 deraadt 1412: local_path, strerror(errno));
1.1 djm 1413: }
1.107 djm 1414: if (fsync_flag) {
1415: debug("syncing \"%s\"", local_path);
1416: if (fsync(local_fd) == -1)
1417: error("Couldn't sync file \"%s\": %s",
1418: local_path, strerror(errno));
1419: }
1.10 djm 1420: }
1.5 djm 1421: close(local_fd);
1.116 djm 1422: sshbuf_free(msg);
1.98 djm 1423: free(handle);
1.23 djm 1424:
1425: return(status);
1.1 djm 1426: }
1427:
1.89 djm 1428: static int
1.116 djm 1429: download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1430: int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
1431: int resume_flag, int fsync_flag)
1.89 djm 1432: {
1433: int i, ret = 0;
1434: SFTP_DIRENT **dir_entries;
1435: char *filename, *new_src, *new_dst;
1436: mode_t mode = 0777;
1437:
1438: if (depth >= MAX_DIR_DEPTH) {
1439: error("Maximum directory depth exceeded: %d levels", depth);
1440: return -1;
1441: }
1442:
1443: if (dirattrib == NULL &&
1444: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1445: error("Unable to stat remote directory \"%s\"", src);
1446: return -1;
1447: }
1448: if (!S_ISDIR(dirattrib->perm)) {
1449: error("\"%s\" is not a directory", src);
1450: return -1;
1451: }
1.105 djm 1452: if (print_flag)
1.89 djm 1453: printf("Retrieving %s\n", src);
1454:
1455: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1456: mode = dirattrib->perm & 01777;
1457: else {
1458: debug("Server did not send permissions for "
1459: "directory \"%s\"", dst);
1460: }
1461:
1462: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1463: error("mkdir %s: %s", dst, strerror(errno));
1464: return -1;
1465: }
1466:
1467: if (do_readdir(conn, src, &dir_entries) == -1) {
1468: error("%s: Failed to get directory contents", src);
1469: return -1;
1470: }
1471:
1472: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1473: filename = dir_entries[i]->filename;
1474:
1475: new_dst = path_append(dst, filename);
1476: new_src = path_append(src, filename);
1477:
1478: if (S_ISDIR(dir_entries[i]->a.perm)) {
1479: if (strcmp(filename, ".") == 0 ||
1480: strcmp(filename, "..") == 0)
1481: continue;
1482: if (download_dir_internal(conn, new_src, new_dst,
1.105 djm 1483: depth + 1, &(dir_entries[i]->a), preserve_flag,
1.107 djm 1484: print_flag, resume_flag, fsync_flag) == -1)
1.89 djm 1485: ret = -1;
1486: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1487: if (do_download(conn, new_src, new_dst,
1.107 djm 1488: &(dir_entries[i]->a), preserve_flag,
1489: resume_flag, fsync_flag) == -1) {
1.89 djm 1490: error("Download of file %s to %s failed",
1491: new_src, new_dst);
1492: ret = -1;
1493: }
1494: } else
1495: logit("%s: not a regular file\n", new_src);
1496:
1.98 djm 1497: free(new_dst);
1498: free(new_src);
1.89 djm 1499: }
1500:
1.105 djm 1501: if (preserve_flag) {
1.89 djm 1502: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1503: struct timeval tv[2];
1504: tv[0].tv_sec = dirattrib->atime;
1505: tv[1].tv_sec = dirattrib->mtime;
1506: tv[0].tv_usec = tv[1].tv_usec = 0;
1507: if (utimes(dst, tv) == -1)
1508: error("Can't set times on \"%s\": %s",
1509: dst, strerror(errno));
1510: } else
1511: debug("Server did not send times for directory "
1512: "\"%s\"", dst);
1513: }
1514:
1515: free_sftp_dirents(dir_entries);
1516:
1517: return ret;
1518: }
1519:
1520: int
1.116 djm 1521: download_dir(struct sftp_conn *conn, const char *src, const char *dst,
1522: Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
1523: int fsync_flag)
1.89 djm 1524: {
1525: char *src_canon;
1526: int ret;
1527:
1528: if ((src_canon = do_realpath(conn, src)) == NULL) {
1.107 djm 1529: error("Unable to canonicalize path \"%s\"", src);
1.89 djm 1530: return -1;
1531: }
1532:
1.105 djm 1533: ret = download_dir_internal(conn, src_canon, dst, 0,
1.107 djm 1534: dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag);
1.98 djm 1535: free(src_canon);
1.89 djm 1536: return ret;
1537: }
1538:
1.1 djm 1539: int
1.116 djm 1540: do_upload(struct sftp_conn *conn, const char *local_path,
1541: const char *remote_path, int preserve_flag, int resume, int fsync_flag)
1.1 djm 1542: {
1.116 djm 1543: int r, local_fd;
1544: u_int status = SSH2_FX_OK;
1545: u_int id;
1546: u_char type;
1.100 dtucker 1547: off_t offset, progress_counter;
1.116 djm 1548: u_char *handle, *data;
1549: struct sshbuf *msg;
1.1 djm 1550: struct stat sb;
1.115 logan 1551: Attrib a, *c = NULL;
1.21 djm 1552: u_int32_t startid;
1553: u_int32_t ackid;
1.22 djm 1554: struct outstanding_ack {
1555: u_int id;
1556: u_int len;
1.77 djm 1557: off_t offset;
1.28 markus 1558: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1559: };
1560: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1561: struct outstanding_ack *ack = NULL;
1.116 djm 1562: size_t handle_len;
1.22 djm 1563:
1564: TAILQ_INIT(&acks);
1.1 djm 1565:
1566: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1567: error("Couldn't open local file \"%s\" for reading: %s",
1568: local_path, strerror(errno));
1569: return(-1);
1570: }
1571: if (fstat(local_fd, &sb) == -1) {
1572: error("Couldn't fstat local file \"%s\": %s",
1573: local_path, strerror(errno));
1.41 djm 1574: close(local_fd);
1575: return(-1);
1576: }
1577: if (!S_ISREG(sb.st_mode)) {
1578: error("%s is not a regular file", local_path);
1.1 djm 1579: close(local_fd);
1580: return(-1);
1581: }
1582: stat_to_attrib(&sb, &a);
1583:
1584: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1585: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1586: a.perm &= 0777;
1.105 djm 1587: if (!preserve_flag)
1.1 djm 1588: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1589:
1.115 logan 1590: if (resume) {
1591: /* Get remote file size if it exists */
1592: if ((c = do_stat(conn, remote_path, 0)) == NULL) {
1.122 ! djm 1593: close(local_fd);
1.115 logan 1594: return -1;
1595: }
1596:
1597: if ((off_t)c->size >= sb.st_size) {
1598: error("destination file bigger or same size as "
1599: "source file");
1600: close(local_fd);
1601: return -1;
1602: }
1603:
1604: if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
1605: close(local_fd);
1606: return -1;
1607: }
1608: }
1609:
1.116 djm 1610: if ((msg = sshbuf_new()) == NULL)
1611: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 1612:
1613: /* Send open request */
1.23 djm 1614: id = conn->msg_id++;
1.116 djm 1615: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1616: (r = sshbuf_put_u32(msg, id)) != 0 ||
1617: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1618: (r = sshbuf_put_u32(msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|
1619: (resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC))) != 0 ||
1620: (r = encode_attrib(msg, &a)) != 0)
1621: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1622: send_msg(conn, msg);
1.33 deraadt 1623: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1624:
1.116 djm 1625: sshbuf_reset(msg);
1.1 djm 1626:
1.93 djm 1627: handle = get_handle(conn, id, &handle_len,
1.88 djm 1628: "remote open(\"%s\")", remote_path);
1.1 djm 1629: if (handle == NULL) {
1630: close(local_fd);
1.116 djm 1631: sshbuf_free(msg);
1.80 djm 1632: return -1;
1.1 djm 1633: }
1634:
1.21 djm 1635: startid = ackid = id + 1;
1.23 djm 1636: data = xmalloc(conn->transfer_buflen);
1.20 djm 1637:
1.1 djm 1638: /* Read from local and write to remote */
1.115 logan 1639: offset = progress_counter = (resume ? c->size : 0);
1.39 fgsch 1640: if (showprogress)
1.100 dtucker 1641: start_progress_meter(local_path, sb.st_size,
1642: &progress_counter);
1.39 fgsch 1643:
1.19 deraadt 1644: for (;;) {
1.1 djm 1645: int len;
1646:
1647: /*
1.51 deraadt 1648: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1649: * thus losing the last block of the file.
1.51 deraadt 1650: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1651: * server to drain.
1.1 djm 1652: */
1.80 djm 1653: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1654: len = 0;
1655: else do
1.23 djm 1656: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1657: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1658:
1659: if (len == -1)
1660: fatal("Couldn't read from \"%s\": %s", local_path,
1661: strerror(errno));
1.21 djm 1662:
1663: if (len != 0) {
1.108 djm 1664: ack = xcalloc(1, sizeof(*ack));
1.22 djm 1665: ack->id = ++id;
1666: ack->offset = offset;
1667: ack->len = len;
1668: TAILQ_INSERT_TAIL(&acks, ack, tq);
1669:
1.116 djm 1670: sshbuf_reset(msg);
1671: if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
1672: (r = sshbuf_put_u32(msg, ack->id)) != 0 ||
1673: (r = sshbuf_put_string(msg, handle,
1674: handle_len)) != 0 ||
1675: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1676: (r = sshbuf_put_string(msg, data, len)) != 0)
1677: fatal("%s: buffer error: %s",
1678: __func__, ssh_err(r));
1679: send_msg(conn, msg);
1.33 deraadt 1680: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1681: id, (unsigned long long)offset, len);
1.22 djm 1682: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1683: break;
1684:
1.22 djm 1685: if (ack == NULL)
1686: fatal("Unexpected ACK %u", id);
1687:
1.28 markus 1688: if (id == startid || len == 0 ||
1.23 djm 1689: id - ackid >= conn->num_requests) {
1.116 djm 1690: u_int rid;
1.31 djm 1691:
1.116 djm 1692: sshbuf_reset(msg);
1693: get_msg(conn, msg);
1694: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1695: (r = sshbuf_get_u32(msg, &rid)) != 0)
1696: fatal("%s: buffer error: %s",
1697: __func__, ssh_err(r));
1.22 djm 1698:
1699: if (type != SSH2_FXP_STATUS)
1700: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1701: "got %d", SSH2_FXP_STATUS, type);
1702:
1.116 djm 1703: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1704: fatal("%s: buffer error: %s",
1705: __func__, ssh_err(r));
1706: debug3("SSH2_FXP_STATUS %u", status);
1.22 djm 1707:
1708: /* Find the request in our queue */
1.53 deraadt 1709: for (ack = TAILQ_FIRST(&acks);
1.116 djm 1710: ack != NULL && ack->id != rid;
1.22 djm 1711: ack = TAILQ_NEXT(ack, tq))
1712: ;
1713: if (ack == NULL)
1.116 djm 1714: fatal("Can't find request for ID %u", rid);
1.22 djm 1715: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1716: debug3("In write loop, ack for %u %u bytes at %lld",
1717: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1718: ++ackid;
1.100 dtucker 1719: progress_counter += ack->len;
1.98 djm 1720: free(ack);
1.1 djm 1721: }
1722: offset += len;
1.77 djm 1723: if (offset < 0)
1724: fatal("%s: offset < 0", __func__);
1.1 djm 1725: }
1.116 djm 1726: sshbuf_free(msg);
1.80 djm 1727:
1.39 fgsch 1728: if (showprogress)
1729: stop_progress_meter();
1.98 djm 1730: free(data);
1.1 djm 1731:
1.80 djm 1732: if (status != SSH2_FX_OK) {
1733: error("Couldn't write to remote file \"%s\": %s",
1734: remote_path, fx2txt(status));
1.116 djm 1735: status = SSH2_FX_FAILURE;
1.80 djm 1736: }
1737:
1.1 djm 1738: if (close(local_fd) == -1) {
1739: error("Couldn't close local file \"%s\": %s", local_path,
1740: strerror(errno));
1.116 djm 1741: status = SSH2_FX_FAILURE;
1.1 djm 1742: }
1743:
1.10 djm 1744: /* Override umask and utimes if asked */
1.105 djm 1745: if (preserve_flag)
1.23 djm 1746: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1747:
1.107 djm 1748: if (fsync_flag)
1749: (void)do_fsync(conn, handle, handle_len);
1750:
1.121 djm 1751: if (do_close(conn, handle, handle_len) != 0)
1.116 djm 1752: status = SSH2_FX_FAILURE;
1753:
1.98 djm 1754: free(handle);
1.5 djm 1755:
1.116 djm 1756: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1757: }
1.89 djm 1758:
1759: static int
1.116 djm 1760: upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1761: int depth, int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1762: {
1.116 djm 1763: int ret = 0;
1.89 djm 1764: DIR *dirp;
1765: struct dirent *dp;
1766: char *filename, *new_src, *new_dst;
1767: struct stat sb;
1.121 djm 1768: Attrib a, *dirattrib;
1.89 djm 1769:
1770: if (depth >= MAX_DIR_DEPTH) {
1771: error("Maximum directory depth exceeded: %d levels", depth);
1772: return -1;
1773: }
1774:
1775: if (stat(src, &sb) == -1) {
1776: error("Couldn't stat directory \"%s\": %s",
1777: src, strerror(errno));
1778: return -1;
1779: }
1780: if (!S_ISDIR(sb.st_mode)) {
1781: error("\"%s\" is not a directory", src);
1782: return -1;
1783: }
1.105 djm 1784: if (print_flag)
1.89 djm 1785: printf("Entering %s\n", src);
1786:
1787: attrib_clear(&a);
1788: stat_to_attrib(&sb, &a);
1789: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1790: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1791: a.perm &= 01777;
1.105 djm 1792: if (!preserve_flag)
1.89 djm 1793: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 1794:
1.89 djm 1795: /*
1.121 djm 1796: * sftp lacks a portable status value to match errno EEXIST,
1797: * so if we get a failure back then we must check whether
1798: * the path already existed and is a directory.
1.89 djm 1799: */
1.121 djm 1800: if (do_mkdir(conn, dst, &a, 0) != 0) {
1801: if ((dirattrib = do_stat(conn, dst, 0)) == NULL)
1.89 djm 1802: return -1;
1.121 djm 1803: if (!S_ISDIR(dirattrib->perm)) {
1804: error("\"%s\" exists but is not a directory", dst);
1.89 djm 1805: return -1;
1.121 djm 1806: }
1.89 djm 1807: }
1808:
1809: if ((dirp = opendir(src)) == NULL) {
1810: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1811: return -1;
1812: }
1.101 djm 1813:
1.89 djm 1814: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1815: if (dp->d_ino == 0)
1816: continue;
1817: filename = dp->d_name;
1818: new_dst = path_append(dst, filename);
1819: new_src = path_append(src, filename);
1820:
1.90 dtucker 1821: if (lstat(new_src, &sb) == -1) {
1822: logit("%s: lstat failed: %s", filename,
1823: strerror(errno));
1824: ret = -1;
1825: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1826: if (strcmp(filename, ".") == 0 ||
1827: strcmp(filename, "..") == 0)
1828: continue;
1829:
1830: if (upload_dir_internal(conn, new_src, new_dst,
1.115 logan 1831: depth + 1, preserve_flag, print_flag, resume,
1.107 djm 1832: fsync_flag) == -1)
1.89 djm 1833: ret = -1;
1.90 dtucker 1834: } else if (S_ISREG(sb.st_mode)) {
1.105 djm 1835: if (do_upload(conn, new_src, new_dst,
1.115 logan 1836: preserve_flag, resume, fsync_flag) == -1) {
1.89 djm 1837: error("Uploading of file %s to %s failed!",
1838: new_src, new_dst);
1839: ret = -1;
1840: }
1841: } else
1842: logit("%s: not a regular file\n", filename);
1.98 djm 1843: free(new_dst);
1844: free(new_src);
1.89 djm 1845: }
1846:
1847: do_setstat(conn, dst, &a);
1848:
1849: (void) closedir(dirp);
1850: return ret;
1851: }
1852:
1853: int
1.116 djm 1854: upload_dir(struct sftp_conn *conn, const char *src, const char *dst,
1855: int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1856: {
1857: char *dst_canon;
1858: int ret;
1859:
1860: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1.107 djm 1861: error("Unable to canonicalize path \"%s\"", dst);
1.89 djm 1862: return -1;
1863: }
1864:
1.106 djm 1865: ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
1.115 logan 1866: print_flag, resume, fsync_flag);
1.107 djm 1867:
1.98 djm 1868: free(dst_canon);
1.89 djm 1869: return ret;
1870: }
1871:
1872: char *
1.116 djm 1873: path_append(const char *p1, const char *p2)
1.89 djm 1874: {
1875: char *ret;
1876: size_t len = strlen(p1) + strlen(p2) + 2;
1877:
1878: ret = xmalloc(len);
1879: strlcpy(ret, p1, len);
1880: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1881: strlcat(ret, "/", len);
1882: strlcat(ret, p2, len);
1883:
1884: return(ret);
1885: }
1886:
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