Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.131
1.131 ! djm 1: /* $OpenBSD: sftp-client.c,v 1.130 2018/07/31 03:07:24 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>
1.82 djm 28: #include <sys/statvfs.h>
1.74 deraadt 29: #include <sys/uio.h>
1.66 stevesk 30:
1.89 djm 31: #include <dirent.h>
1.67 stevesk 32: #include <errno.h>
1.66 stevesk 33: #include <fcntl.h>
1.70 stevesk 34: #include <signal.h>
1.87 dtucker 35: #include <stdarg.h>
1.73 stevesk 36: #include <stdio.h>
1.109 dtucker 37: #include <stdlib.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"
1.116 djm 42: #include "ssherr.h"
43: #include "sshbuf.h"
1.1 djm 44: #include "log.h"
45: #include "atomicio.h"
1.39 fgsch 46: #include "progressmeter.h"
1.64 djm 47: #include "misc.h"
1.124 schwarze 48: #include "utf8.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
1.131 ! djm 75: #define SFTP_EXT_LSETSTAT 0x00000020
1.81 djm 76: u_int exts;
1.93 djm 77: u_int64_t limit_kbps;
78: struct bwlimit bwlimit_in, bwlimit_out;
1.23 djm 79: };
1.4 djm 80:
1.116 djm 81: static u_char *
82: get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
1.93 djm 83: const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
84:
85: /* ARGSUSED */
86: static int
87: sftpio(void *_bwlimit, size_t amount)
88: {
89: struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
90:
91: bandwidth_limit(bwlimit, amount);
92: return 0;
93: }
1.88 djm 94:
1.17 itojun 95: static void
1.116 djm 96: send_msg(struct sftp_conn *conn, struct sshbuf *m)
1.1 djm 97: {
1.40 djm 98: u_char mlen[4];
1.65 djm 99: struct iovec iov[2];
1.40 djm 100:
1.116 djm 101: if (sshbuf_len(m) > SFTP_MAX_MSG_LENGTH)
102: fatal("Outbound message too long %zu", sshbuf_len(m));
1.40 djm 103:
104: /* Send length first */
1.116 djm 105: put_u32(mlen, sshbuf_len(m));
1.65 djm 106: iov[0].iov_base = mlen;
107: iov[0].iov_len = sizeof(mlen);
1.116 djm 108: iov[1].iov_base = (u_char *)sshbuf_ptr(m);
109: iov[1].iov_len = sshbuf_len(m);
1.74 deraadt 110:
1.93 djm 111: if (atomiciov6(writev, conn->fd_out, iov, 2,
1.101 djm 112: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
1.116 djm 113: sshbuf_len(m) + sizeof(mlen))
1.1 djm 114: fatal("Couldn't send packet: %s", strerror(errno));
115:
1.116 djm 116: sshbuf_reset(m);
1.1 djm 117: }
118:
1.17 itojun 119: static void
1.128 dtucker 120: get_msg_extended(struct sftp_conn *conn, struct sshbuf *m, int initial)
1.1 djm 121: {
1.40 djm 122: u_int msg_len;
1.116 djm 123: u_char *p;
124: int r;
1.1 djm 125:
1.116 djm 126: if ((r = sshbuf_reserve(m, 4, &p)) != 0)
127: fatal("%s: buffer error: %s", __func__, ssh_err(r));
128: if (atomicio6(read, conn->fd_in, p, 4,
1.93 djm 129: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) {
1.127 djm 130: if (errno == EPIPE || errno == ECONNRESET)
1.54 avsm 131: fatal("Connection closed");
132: else
133: fatal("Couldn't read packet: %s", strerror(errno));
134: }
1.1 djm 135:
1.116 djm 136: if ((r = sshbuf_get_u32(m, &msg_len)) != 0)
137: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.128 dtucker 138: if (msg_len > SFTP_MAX_MSG_LENGTH) {
139: do_log2(initial ? SYSLOG_LEVEL_ERROR : SYSLOG_LEVEL_FATAL,
140: "Received message too long %u", msg_len);
141: fatal("Ensure the remote shell produces no output "
142: "for non-interactive sessions.");
143: }
1.1 djm 144:
1.116 djm 145: if ((r = sshbuf_reserve(m, msg_len, &p)) != 0)
146: fatal("%s: buffer error: %s", __func__, ssh_err(r));
147: if (atomicio6(read, conn->fd_in, p, msg_len,
1.93 djm 148: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
149: != msg_len) {
1.54 avsm 150: if (errno == EPIPE)
151: fatal("Connection closed");
152: else
153: fatal("Read packet: %s", strerror(errno));
154: }
1.1 djm 155: }
156:
1.17 itojun 157: static void
1.128 dtucker 158: get_msg(struct sftp_conn *conn, struct sshbuf *m)
159: {
160: get_msg_extended(conn, m, 0);
161: }
162:
163: static void
1.116 djm 164: send_string_request(struct sftp_conn *conn, u_int id, u_int code, const char *s,
1.1 djm 165: u_int len)
166: {
1.116 djm 167: struct sshbuf *msg;
168: int r;
1.1 djm 169:
1.116 djm 170: if ((msg = sshbuf_new()) == NULL)
171: fatal("%s: sshbuf_new failed", __func__);
172: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
173: (r = sshbuf_put_u32(msg, id)) != 0 ||
174: (r = sshbuf_put_string(msg, s, len)) != 0)
175: fatal("%s: buffer error: %s", __func__, ssh_err(r));
176: send_msg(conn, msg);
1.93 djm 177: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.116 djm 178: sshbuf_free(msg);
1.1 djm 179: }
180:
1.17 itojun 181: static void
1.93 djm 182: send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
1.116 djm 183: const void *s, u_int len, Attrib *a)
1.1 djm 184: {
1.116 djm 185: struct sshbuf *msg;
186: int r;
1.1 djm 187:
1.116 djm 188: if ((msg = sshbuf_new()) == NULL)
189: fatal("%s: sshbuf_new failed", __func__);
190: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
191: (r = sshbuf_put_u32(msg, id)) != 0 ||
192: (r = sshbuf_put_string(msg, s, len)) != 0 ||
193: (r = encode_attrib(msg, a)) != 0)
194: fatal("%s: buffer error: %s", __func__, ssh_err(r));
195: send_msg(conn, msg);
1.93 djm 196: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.116 djm 197: sshbuf_free(msg);
1.1 djm 198: }
199:
1.17 itojun 200: static u_int
1.93 djm 201: get_status(struct sftp_conn *conn, u_int expected_id)
1.1 djm 202: {
1.116 djm 203: struct sshbuf *msg;
204: u_char type;
205: u_int id, status;
206: int r;
1.1 djm 207:
1.116 djm 208: if ((msg = sshbuf_new()) == NULL)
209: fatal("%s: sshbuf_new failed", __func__);
210: get_msg(conn, msg);
211: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
212: (r = sshbuf_get_u32(msg, &id)) != 0)
213: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 214:
215: if (id != expected_id)
1.33 deraadt 216: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 217: if (type != SSH2_FXP_STATUS)
1.33 deraadt 218: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 219: SSH2_FXP_STATUS, type);
220:
1.116 djm 221: if ((r = sshbuf_get_u32(msg, &status)) != 0)
222: fatal("%s: buffer error: %s", __func__, ssh_err(r));
223: sshbuf_free(msg);
1.1 djm 224:
1.33 deraadt 225: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 226:
1.93 djm 227: return status;
1.1 djm 228: }
229:
1.116 djm 230: static u_char *
231: get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
1.93 djm 232: const char *errfmt, ...)
1.1 djm 233: {
1.116 djm 234: struct sshbuf *msg;
235: u_int id, status;
236: u_char type;
237: u_char *handle;
238: char errmsg[256];
1.88 djm 239: va_list args;
1.116 djm 240: int r;
1.88 djm 241:
242: va_start(args, errfmt);
243: if (errfmt != NULL)
244: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
245: va_end(args);
1.1 djm 246:
1.116 djm 247: if ((msg = sshbuf_new()) == NULL)
248: fatal("%s: sshbuf_new failed", __func__);
249: get_msg(conn, msg);
250: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
251: (r = sshbuf_get_u32(msg, &id)) != 0)
252: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 253:
254: if (id != expected_id)
1.88 djm 255: fatal("%s: ID mismatch (%u != %u)",
256: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 257: if (type == SSH2_FXP_STATUS) {
1.116 djm 258: if ((r = sshbuf_get_u32(msg, &status)) != 0)
259: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.88 djm 260: if (errfmt != NULL)
261: error("%s: %s", errmsg, fx2txt(status));
1.116 djm 262: sshbuf_free(msg);
1.1 djm 263: return(NULL);
264: } else if (type != SSH2_FXP_HANDLE)
1.88 djm 265: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
266: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 267:
1.116 djm 268: if ((r = sshbuf_get_string(msg, &handle, len)) != 0)
269: fatal("%s: buffer error: %s", __func__, ssh_err(r));
270: sshbuf_free(msg);
1.1 djm 271:
1.116 djm 272: return handle;
1.1 djm 273: }
274:
1.17 itojun 275: static Attrib *
1.93 djm 276: get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
1.1 djm 277: {
1.116 djm 278: struct sshbuf *msg;
279: u_int id;
280: u_char type;
281: int r;
282: static Attrib a;
283:
284: if ((msg = sshbuf_new()) == NULL)
285: fatal("%s: sshbuf_new failed", __func__);
286: get_msg(conn, msg);
287:
288: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
289: (r = sshbuf_get_u32(msg, &id)) != 0)
290: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 291:
1.33 deraadt 292: debug3("Received stat reply T:%u I:%u", type, id);
1.1 djm 293: if (id != expected_id)
1.33 deraadt 294: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 295: if (type == SSH2_FXP_STATUS) {
1.116 djm 296: u_int status;
1.1 djm 297:
1.116 djm 298: if ((r = sshbuf_get_u32(msg, &status)) != 0)
299: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.14 djm 300: if (quiet)
301: debug("Couldn't stat remote file: %s", fx2txt(status));
302: else
303: error("Couldn't stat remote file: %s", fx2txt(status));
1.116 djm 304: sshbuf_free(msg);
1.1 djm 305: return(NULL);
306: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 307: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 308: SSH2_FXP_ATTRS, type);
309: }
1.116 djm 310: if ((r = decode_attrib(msg, &a)) != 0) {
311: error("%s: couldn't decode attrib: %s", __func__, ssh_err(r));
312: sshbuf_free(msg);
313: return NULL;
314: }
315: sshbuf_free(msg);
1.1 djm 316:
1.116 djm 317: return &a;
1.1 djm 318: }
319:
1.82 djm 320: static int
1.93 djm 321: get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
322: u_int expected_id, int quiet)
1.82 djm 323: {
1.116 djm 324: struct sshbuf *msg;
325: u_char type;
326: u_int id;
327: u_int64_t flag;
328: int r;
1.82 djm 329:
1.116 djm 330: if ((msg = sshbuf_new()) == NULL)
331: fatal("%s: sshbuf_new failed", __func__);
332: get_msg(conn, msg);
333:
334: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
335: (r = sshbuf_get_u32(msg, &id)) != 0)
336: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 337:
338: debug3("Received statvfs reply T:%u I:%u", type, id);
339: if (id != expected_id)
340: fatal("ID mismatch (%u != %u)", id, expected_id);
341: if (type == SSH2_FXP_STATUS) {
1.116 djm 342: u_int status;
1.82 djm 343:
1.116 djm 344: if ((r = sshbuf_get_u32(msg, &status)) != 0)
345: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 346: if (quiet)
347: debug("Couldn't statvfs: %s", fx2txt(status));
348: else
349: error("Couldn't statvfs: %s", fx2txt(status));
1.116 djm 350: sshbuf_free(msg);
1.82 djm 351: return -1;
352: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
353: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
354: SSH2_FXP_EXTENDED_REPLY, type);
355: }
356:
1.114 tedu 357: memset(st, 0, sizeof(*st));
1.116 djm 358: if ((r = sshbuf_get_u64(msg, &st->f_bsize)) != 0 ||
359: (r = sshbuf_get_u64(msg, &st->f_frsize)) != 0 ||
360: (r = sshbuf_get_u64(msg, &st->f_blocks)) != 0 ||
361: (r = sshbuf_get_u64(msg, &st->f_bfree)) != 0 ||
362: (r = sshbuf_get_u64(msg, &st->f_bavail)) != 0 ||
363: (r = sshbuf_get_u64(msg, &st->f_files)) != 0 ||
364: (r = sshbuf_get_u64(msg, &st->f_ffree)) != 0 ||
365: (r = sshbuf_get_u64(msg, &st->f_favail)) != 0 ||
366: (r = sshbuf_get_u64(msg, &st->f_fsid)) != 0 ||
367: (r = sshbuf_get_u64(msg, &flag)) != 0 ||
368: (r = sshbuf_get_u64(msg, &st->f_namemax)) != 0)
369: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 370:
371: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
372: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
373:
1.116 djm 374: sshbuf_free(msg);
1.82 djm 375:
376: return 0;
377: }
378:
1.23 djm 379: struct sftp_conn *
1.93 djm 380: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
381: u_int64_t limit_kbps)
1.1 djm 382: {
1.116 djm 383: u_char type;
384: struct sshbuf *msg;
1.23 djm 385: struct sftp_conn *ret;
1.116 djm 386: int r;
1.1 djm 387:
1.103 djm 388: ret = xcalloc(1, sizeof(*ret));
389: ret->msg_id = 1;
1.93 djm 390: ret->fd_in = fd_in;
391: ret->fd_out = fd_out;
392: ret->transfer_buflen = transfer_buflen;
393: ret->num_requests = num_requests;
394: ret->exts = 0;
395: ret->limit_kbps = 0;
396:
1.116 djm 397: if ((msg = sshbuf_new()) == NULL)
398: fatal("%s: sshbuf_new failed", __func__);
399: if ((r = sshbuf_put_u8(msg, SSH2_FXP_INIT)) != 0 ||
400: (r = sshbuf_put_u32(msg, SSH2_FILEXFER_VERSION)) != 0)
401: fatal("%s: buffer error: %s", __func__, ssh_err(r));
402: send_msg(ret, msg);
1.1 djm 403:
1.116 djm 404: sshbuf_reset(msg);
1.1 djm 405:
1.128 dtucker 406: get_msg_extended(ret, msg, 1);
1.1 djm 407:
1.3 stevesk 408: /* Expecting a VERSION reply */
1.116 djm 409: if ((r = sshbuf_get_u8(msg, &type)) != 0)
410: fatal("%s: buffer error: %s", __func__, ssh_err(r));
411: if (type != SSH2_FXP_VERSION) {
1.33 deraadt 412: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 413: type);
1.116 djm 414: sshbuf_free(msg);
1.119 jsg 415: free(ret);
1.23 djm 416: return(NULL);
1.1 djm 417: }
1.116 djm 418: if ((r = sshbuf_get_u32(msg, &ret->version)) != 0)
419: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 420:
1.93 djm 421: debug2("Remote version: %u", ret->version);
1.1 djm 422:
423: /* Check for extensions */
1.116 djm 424: while (sshbuf_len(msg) > 0) {
425: char *name;
426: u_char *value;
427: size_t vlen;
1.85 djm 428: int known = 0;
1.1 djm 429:
1.116 djm 430: if ((r = sshbuf_get_cstring(msg, &name, NULL)) != 0 ||
431: (r = sshbuf_get_string(msg, &value, &vlen)) != 0)
432: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 433: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.116 djm 434: strcmp((char *)value, "1") == 0) {
1.93 djm 435: ret->exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 436: known = 1;
437: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
1.116 djm 438: strcmp((char *)value, "2") == 0) {
1.93 djm 439: ret->exts |= SFTP_EXT_STATVFS;
1.85 djm 440: known = 1;
1.94 djm 441: } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
1.116 djm 442: strcmp((char *)value, "2") == 0) {
1.93 djm 443: ret->exts |= SFTP_EXT_FSTATVFS;
1.85 djm 444: known = 1;
1.94 djm 445: } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
1.116 djm 446: strcmp((char *)value, "1") == 0) {
1.94 djm 447: ret->exts |= SFTP_EXT_HARDLINK;
448: known = 1;
1.116 djm 449: } else if (strcmp(name, "fsync@openssh.com") == 0 &&
450: strcmp((char *)value, "1") == 0) {
451: ret->exts |= SFTP_EXT_FSYNC;
452: known = 1;
1.131 ! djm 453: } else if (strcmp(name, "lsetstat@openssh.com") == 0 &&
! 454: strcmp((char *)value, "1") == 0) {
! 455: ret->exts |= SFTP_EXT_LSETSTAT;
! 456: known = 1;
1.85 djm 457: }
458: if (known) {
459: debug2("Server supports extension \"%s\" revision %s",
460: name, value);
461: } else {
462: debug2("Unrecognised server extension \"%s\"", name);
463: }
1.98 djm 464: free(name);
465: free(value);
1.1 djm 466: }
467:
1.116 djm 468: sshbuf_free(msg);
1.11 djm 469:
1.23 djm 470: /* Some filexfer v.0 servers don't support large packets */
1.93 djm 471: if (ret->version == 0)
1.125 deraadt 472: ret->transfer_buflen = MINIMUM(ret->transfer_buflen, 20480);
1.23 djm 473:
1.93 djm 474: ret->limit_kbps = limit_kbps;
475: if (ret->limit_kbps > 0) {
476: bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
477: ret->transfer_buflen);
478: bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
479: ret->transfer_buflen);
480: }
481:
482: return ret;
1.23 djm 483: }
484:
485: u_int
486: sftp_proto_version(struct sftp_conn *conn)
487: {
1.93 djm 488: return conn->version;
1.1 djm 489: }
490:
491: int
1.116 djm 492: do_close(struct sftp_conn *conn, const u_char *handle, u_int handle_len)
1.1 djm 493: {
494: u_int id, status;
1.116 djm 495: struct sshbuf *msg;
496: int r;
1.1 djm 497:
1.116 djm 498: if ((msg = sshbuf_new()) == NULL)
499: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 500:
1.23 djm 501: id = conn->msg_id++;
1.116 djm 502: if ((r = sshbuf_put_u8(msg, SSH2_FXP_CLOSE)) != 0 ||
503: (r = sshbuf_put_u32(msg, id)) != 0 ||
504: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
505: fatal("%s: buffer error: %s", __func__, ssh_err(r));
506: send_msg(conn, msg);
1.33 deraadt 507: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 508:
1.93 djm 509: status = get_status(conn, id);
1.1 djm 510: if (status != SSH2_FX_OK)
511: error("Couldn't close file: %s", fx2txt(status));
512:
1.116 djm 513: sshbuf_free(msg);
1.1 djm 514:
1.116 djm 515: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 516: }
517:
1.12 djm 518:
1.17 itojun 519: static int
1.116 djm 520: do_lsreaddir(struct sftp_conn *conn, const char *path, int print_flag,
1.12 djm 521: SFTP_DIRENT ***dir)
1.1 djm 522: {
1.116 djm 523: struct sshbuf *msg;
524: u_int count, id, i, expected_id, ents = 0;
525: size_t handle_len;
1.123 djm 526: u_char type, *handle;
1.111 djm 527: int status = SSH2_FX_FAILURE;
1.116 djm 528: int r;
1.111 djm 529:
530: if (dir)
531: *dir = NULL;
1.1 djm 532:
1.23 djm 533: id = conn->msg_id++;
1.1 djm 534:
1.116 djm 535: if ((msg = sshbuf_new()) == NULL)
536: fatal("%s: sshbuf_new failed", __func__);
537: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPENDIR)) != 0 ||
538: (r = sshbuf_put_u32(msg, id)) != 0 ||
539: (r = sshbuf_put_cstring(msg, path)) != 0)
540: fatal("%s: buffer error: %s", __func__, ssh_err(r));
541: send_msg(conn, msg);
1.1 djm 542:
1.93 djm 543: handle = get_handle(conn, id, &handle_len,
1.88 djm 544: "remote readdir(\"%s\")", path);
1.96 markus 545: if (handle == NULL) {
1.116 djm 546: sshbuf_free(msg);
1.93 djm 547: return -1;
1.96 markus 548: }
1.1 djm 549:
1.12 djm 550: if (dir) {
551: ents = 0;
1.108 djm 552: *dir = xcalloc(1, sizeof(**dir));
1.12 djm 553: (*dir)[0] = NULL;
554: }
555:
1.49 djm 556: for (; !interrupted;) {
1.23 djm 557: id = expected_id = conn->msg_id++;
1.1 djm 558:
1.33 deraadt 559: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 560:
1.116 djm 561: sshbuf_reset(msg);
562: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READDIR)) != 0 ||
563: (r = sshbuf_put_u32(msg, id)) != 0 ||
564: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
565: fatal("%s: buffer error: %s", __func__, ssh_err(r));
566: send_msg(conn, msg);
567:
568: sshbuf_reset(msg);
569:
570: get_msg(conn, msg);
571:
572: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
573: (r = sshbuf_get_u32(msg, &id)) != 0)
574: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 575:
1.33 deraadt 576: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 577:
578: if (id != expected_id)
1.33 deraadt 579: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 580:
581: if (type == SSH2_FXP_STATUS) {
1.116 djm 582: u_int rstatus;
583:
584: if ((r = sshbuf_get_u32(msg, &rstatus)) != 0)
585: fatal("%s: buffer error: %s",
586: __func__, ssh_err(r));
587: debug3("Received SSH2_FXP_STATUS %d", rstatus);
588: if (rstatus == SSH2_FX_EOF)
1.1 djm 589: break;
1.116 djm 590: error("Couldn't read directory: %s", fx2txt(rstatus));
1.111 djm 591: goto out;
1.1 djm 592: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 593: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 594: SSH2_FXP_NAME, type);
595:
1.116 djm 596: if ((r = sshbuf_get_u32(msg, &count)) != 0)
597: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.126 djm 598: if (count > SSHBUF_SIZE_MAX)
599: fatal("%s: nonsensical number of entries", __func__);
1.7 markus 600: if (count == 0)
601: break;
1.8 stevesk 602: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 603: for (i = 0; i < count; i++) {
1.1 djm 604: char *filename, *longname;
1.116 djm 605: Attrib a;
1.1 djm 606:
1.116 djm 607: if ((r = sshbuf_get_cstring(msg, &filename,
608: NULL)) != 0 ||
609: (r = sshbuf_get_cstring(msg, &longname,
610: NULL)) != 0)
611: fatal("%s: buffer error: %s",
612: __func__, ssh_err(r));
613: if ((r = decode_attrib(msg, &a)) != 0) {
614: error("%s: couldn't decode attrib: %s",
615: __func__, ssh_err(r));
616: free(filename);
617: free(longname);
618: sshbuf_free(msg);
619: return -1;
620: }
1.1 djm 621:
1.105 djm 622: if (print_flag)
1.124 schwarze 623: mprintf("%s\n", longname);
1.12 djm 624:
1.89 djm 625: /*
626: * Directory entries should never contain '/'
627: * These can be used to attack recursive ops
628: * (e.g. send '../../../../etc/passwd')
629: */
630: if (strchr(filename, '/') != NULL) {
631: error("Server sent suspect path \"%s\" "
632: "during readdir of \"%s\"", filename, path);
1.111 djm 633: } else if (dir) {
1.118 deraadt 634: *dir = xreallocarray(*dir, ents + 2, sizeof(**dir));
1.108 djm 635: (*dir)[ents] = xcalloc(1, sizeof(***dir));
1.12 djm 636: (*dir)[ents]->filename = xstrdup(filename);
637: (*dir)[ents]->longname = xstrdup(longname);
1.116 djm 638: memcpy(&(*dir)[ents]->a, &a, sizeof(a));
1.12 djm 639: (*dir)[++ents] = NULL;
640: }
1.98 djm 641: free(filename);
642: free(longname);
1.1 djm 643: }
644: }
1.111 djm 645: status = 0;
1.1 djm 646:
1.111 djm 647: out:
1.116 djm 648: sshbuf_free(msg);
1.23 djm 649: do_close(conn, handle, handle_len);
1.98 djm 650: free(handle);
1.1 djm 651:
1.111 djm 652: if (status != 0 && dir != NULL) {
653: /* Don't return results on error */
654: free_sftp_dirents(*dir);
655: *dir = NULL;
656: } else if (interrupted && dir != NULL && *dir != NULL) {
657: /* Don't return partial matches on interrupt */
1.49 djm 658: free_sftp_dirents(*dir);
1.108 djm 659: *dir = xcalloc(1, sizeof(**dir));
1.49 djm 660: **dir = NULL;
661: }
662:
1.129 djm 663: return status == SSH2_FX_OK ? 0 : -1;
1.12 djm 664: }
665:
666: int
1.116 djm 667: do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir)
1.12 djm 668: {
1.23 djm 669: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 670: }
671:
672: void free_sftp_dirents(SFTP_DIRENT **s)
673: {
674: int i;
1.19 deraadt 675:
1.111 djm 676: if (s == NULL)
677: return;
1.19 deraadt 678: for (i = 0; s[i]; i++) {
1.98 djm 679: free(s[i]->filename);
680: free(s[i]->longname);
681: free(s[i]);
1.12 djm 682: }
1.98 djm 683: free(s);
1.12 djm 684: }
685:
686: int
1.116 djm 687: do_rm(struct sftp_conn *conn, const char *path)
1.1 djm 688: {
689: u_int status, id;
690:
691: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
692:
1.23 djm 693: id = conn->msg_id++;
1.93 djm 694: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
695: status = get_status(conn, id);
1.1 djm 696: if (status != SSH2_FX_OK)
697: error("Couldn't delete file: %s", fx2txt(status));
1.116 djm 698: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 699: }
700:
701: int
1.116 djm 702: do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag)
1.1 djm 703: {
704: u_int status, id;
705:
1.23 djm 706: id = conn->msg_id++;
1.93 djm 707: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 708: strlen(path), a);
709:
1.93 djm 710: status = get_status(conn, id);
1.105 djm 711: if (status != SSH2_FX_OK && print_flag)
1.1 djm 712: error("Couldn't create directory: %s", fx2txt(status));
713:
1.116 djm 714: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 715: }
716:
717: int
1.116 djm 718: do_rmdir(struct sftp_conn *conn, const char *path)
1.1 djm 719: {
720: u_int status, id;
721:
1.23 djm 722: id = conn->msg_id++;
1.93 djm 723: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 724: strlen(path));
1.1 djm 725:
1.93 djm 726: status = get_status(conn, id);
1.1 djm 727: if (status != SSH2_FX_OK)
728: error("Couldn't remove directory: %s", fx2txt(status));
729:
1.116 djm 730: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 731: }
732:
733: Attrib *
1.116 djm 734: do_stat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 735: {
736: u_int id;
737:
1.23 djm 738: id = conn->msg_id++;
739:
1.93 djm 740: send_string_request(conn, id,
1.28 markus 741: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 742: path, strlen(path));
743:
1.93 djm 744: return(get_decode_stat(conn, id, quiet));
1.1 djm 745: }
746:
747: Attrib *
1.116 djm 748: do_lstat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 749: {
750: u_int id;
751:
1.23 djm 752: if (conn->version == 0) {
753: if (quiet)
754: debug("Server version does not support lstat operation");
755: else
1.43 itojun 756: logit("Server version does not support lstat operation");
1.30 markus 757: return(do_stat(conn, path, quiet));
1.23 djm 758: }
759:
760: id = conn->msg_id++;
1.93 djm 761: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 762: strlen(path));
763:
1.93 djm 764: return(get_decode_stat(conn, id, quiet));
1.1 djm 765: }
766:
1.78 chl 767: #ifdef notyet
1.1 djm 768: Attrib *
1.116 djm 769: do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
770: int quiet)
1.1 djm 771: {
772: u_int id;
773:
1.23 djm 774: id = conn->msg_id++;
1.93 djm 775: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 776: handle_len);
777:
1.93 djm 778: return(get_decode_stat(conn, id, quiet));
1.1 djm 779: }
1.78 chl 780: #endif
1.1 djm 781:
782: int
1.116 djm 783: do_setstat(struct sftp_conn *conn, const char *path, Attrib *a)
1.1 djm 784: {
785: u_int status, id;
786:
1.23 djm 787: id = conn->msg_id++;
1.93 djm 788: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 789: strlen(path), a);
790:
1.93 djm 791: status = get_status(conn, id);
1.1 djm 792: if (status != SSH2_FX_OK)
793: error("Couldn't setstat on \"%s\": %s", path,
794: fx2txt(status));
795:
1.116 djm 796: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 797: }
798:
799: int
1.116 djm 800: do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.1 djm 801: Attrib *a)
802: {
803: u_int status, id;
804:
1.23 djm 805: id = conn->msg_id++;
1.93 djm 806: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 807: handle_len, a);
808:
1.93 djm 809: status = get_status(conn, id);
1.1 djm 810: if (status != SSH2_FX_OK)
811: error("Couldn't fsetstat: %s", fx2txt(status));
812:
1.116 djm 813: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 814: }
815:
816: char *
1.116 djm 817: do_realpath(struct sftp_conn *conn, const char *path)
1.1 djm 818: {
1.116 djm 819: struct sshbuf *msg;
820: u_int expected_id, count, id;
1.1 djm 821: char *filename, *longname;
1.116 djm 822: Attrib a;
823: u_char type;
824: int r;
1.1 djm 825:
1.23 djm 826: expected_id = id = conn->msg_id++;
1.93 djm 827: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 828: strlen(path));
1.1 djm 829:
1.116 djm 830: if ((msg = sshbuf_new()) == NULL)
831: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 832:
1.116 djm 833: get_msg(conn, msg);
834: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
835: (r = sshbuf_get_u32(msg, &id)) != 0)
836: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 837:
838: if (id != expected_id)
1.33 deraadt 839: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 840:
841: if (type == SSH2_FXP_STATUS) {
1.116 djm 842: u_int status;
1.1 djm 843:
1.116 djm 844: if ((r = sshbuf_get_u32(msg, &status)) != 0)
845: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.107 djm 846: error("Couldn't canonicalize: %s", fx2txt(status));
1.116 djm 847: sshbuf_free(msg);
1.91 djm 848: return NULL;
1.1 djm 849: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 850: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 851: SSH2_FXP_NAME, type);
852:
1.116 djm 853: if ((r = sshbuf_get_u32(msg, &count)) != 0)
854: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 855: if (count != 1)
856: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
857:
1.116 djm 858: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
859: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
860: (r = decode_attrib(msg, &a)) != 0)
861: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 862:
1.97 dtucker 863: debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
1.116 djm 864: (unsigned long)a.size);
1.1 djm 865:
1.98 djm 866: free(longname);
1.1 djm 867:
1.116 djm 868: sshbuf_free(msg);
1.1 djm 869:
870: return(filename);
871: }
872:
873: int
1.116 djm 874: do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath,
1.102 djm 875: int force_legacy)
1.1 djm 876: {
1.116 djm 877: struct sshbuf *msg;
1.1 djm 878: u_int status, id;
1.116 djm 879: int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
1.1 djm 880:
1.116 djm 881: if ((msg = sshbuf_new()) == NULL)
882: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 883:
884: /* Send rename request */
1.23 djm 885: id = conn->msg_id++;
1.102 djm 886: if (use_ext) {
1.116 djm 887: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
888: (r = sshbuf_put_u32(msg, id)) != 0 ||
889: (r = sshbuf_put_cstring(msg,
890: "posix-rename@openssh.com")) != 0)
891: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.81 djm 892: } else {
1.116 djm 893: if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 ||
894: (r = sshbuf_put_u32(msg, id)) != 0)
895: fatal("%s: buffer error: %s", __func__, ssh_err(r));
896: }
897: if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
898: (r = sshbuf_put_cstring(msg, newpath)) != 0)
899: fatal("%s: buffer error: %s", __func__, ssh_err(r));
900: send_msg(conn, msg);
1.81 djm 901: debug3("Sent message %s \"%s\" -> \"%s\"",
1.116 djm 902: use_ext ? "posix-rename@openssh.com" :
903: "SSH2_FXP_RENAME", oldpath, newpath);
904: sshbuf_free(msg);
1.1 djm 905:
1.93 djm 906: status = get_status(conn, id);
1.1 djm 907: if (status != SSH2_FX_OK)
1.23 djm 908: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 909: newpath, fx2txt(status));
910:
1.116 djm 911: return status == SSH2_FX_OK ? 0 : -1;
1.94 djm 912: }
913:
914: int
1.116 djm 915: do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.94 djm 916: {
1.116 djm 917: struct sshbuf *msg;
1.94 djm 918: u_int status, id;
1.116 djm 919: int r;
1.94 djm 920:
921: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
922: error("Server does not support hardlink@openssh.com extension");
923: return -1;
924: }
925:
1.116 djm 926: if ((msg = sshbuf_new()) == NULL)
927: fatal("%s: sshbuf_new failed", __func__);
1.95 markus 928:
929: /* Send link request */
930: id = conn->msg_id++;
1.116 djm 931: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
932: (r = sshbuf_put_u32(msg, id)) != 0 ||
933: (r = sshbuf_put_cstring(msg, "hardlink@openssh.com")) != 0 ||
934: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
935: (r = sshbuf_put_cstring(msg, newpath)) != 0)
936: fatal("%s: buffer error: %s", __func__, ssh_err(r));
937: send_msg(conn, msg);
1.94 djm 938: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
939: oldpath, newpath);
1.116 djm 940: sshbuf_free(msg);
1.94 djm 941:
942: status = get_status(conn, id);
943: if (status != SSH2_FX_OK)
944: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 945: newpath, fx2txt(status));
1.1 djm 946:
1.116 djm 947: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 948: }
949:
950: int
1.116 djm 951: do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.11 djm 952: {
1.116 djm 953: struct sshbuf *msg;
1.11 djm 954: u_int status, id;
1.116 djm 955: int r;
1.11 djm 956:
1.23 djm 957: if (conn->version < 3) {
958: error("This server does not support the symlink operation");
959: return(SSH2_FX_OP_UNSUPPORTED);
960: }
961:
1.116 djm 962: if ((msg = sshbuf_new()) == NULL)
963: fatal("%s: sshbuf_new failed", __func__);
1.11 djm 964:
1.48 djm 965: /* Send symlink request */
1.23 djm 966: id = conn->msg_id++;
1.116 djm 967: if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 ||
968: (r = sshbuf_put_u32(msg, id)) != 0 ||
969: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
970: (r = sshbuf_put_cstring(msg, newpath)) != 0)
971: fatal("%s: buffer error: %s", __func__, ssh_err(r));
972: send_msg(conn, msg);
1.11 djm 973: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
974: newpath);
1.116 djm 975: sshbuf_free(msg);
1.11 djm 976:
1.93 djm 977: status = get_status(conn, id);
1.11 djm 978: if (status != SSH2_FX_OK)
1.36 markus 979: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 980: newpath, fx2txt(status));
1.11 djm 981:
1.116 djm 982: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 983: }
984:
1.107 djm 985: int
1.116 djm 986: do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len)
1.107 djm 987: {
1.116 djm 988: struct sshbuf *msg;
1.107 djm 989: u_int status, id;
1.116 djm 990: int r;
1.107 djm 991:
992: /* Silently return if the extension is not supported */
993: if ((conn->exts & SFTP_EXT_FSYNC) == 0)
994: return -1;
995:
996: /* Send fsync request */
1.116 djm 997: if ((msg = sshbuf_new()) == NULL)
998: fatal("%s: sshbuf_new failed", __func__);
1.107 djm 999: id = conn->msg_id++;
1.116 djm 1000: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1001: (r = sshbuf_put_u32(msg, id)) != 0 ||
1002: (r = sshbuf_put_cstring(msg, "fsync@openssh.com")) != 0 ||
1003: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1004: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1005: send_msg(conn, msg);
1.107 djm 1006: debug3("Sent message fsync@openssh.com I:%u", id);
1.116 djm 1007: sshbuf_free(msg);
1.107 djm 1008:
1009: status = get_status(conn, id);
1010: if (status != SSH2_FX_OK)
1011: error("Couldn't sync file: %s", fx2txt(status));
1012:
1.129 djm 1013: return status == SSH2_FX_OK ? 0 : -1;
1.107 djm 1014: }
1015:
1.78 chl 1016: #ifdef notyet
1.11 djm 1017: char *
1.116 djm 1018: do_readlink(struct sftp_conn *conn, const char *path)
1.11 djm 1019: {
1.116 djm 1020: struct sshbuf *msg;
1021: u_int expected_id, count, id;
1.11 djm 1022: char *filename, *longname;
1.116 djm 1023: Attrib a;
1024: u_char type;
1025: int r;
1.11 djm 1026:
1.23 djm 1027: expected_id = id = conn->msg_id++;
1.93 djm 1028: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 1029:
1.116 djm 1030: if ((msg = sshbuf_new()) == NULL)
1031: fatal("%s: sshbuf_new failed", __func__);
1.11 djm 1032:
1.116 djm 1033: get_msg(conn, msg);
1034: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1035: (r = sshbuf_get_u32(msg, &id)) != 0)
1036: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1037:
1038: if (id != expected_id)
1.33 deraadt 1039: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 1040:
1041: if (type == SSH2_FXP_STATUS) {
1.116 djm 1042: u_int status;
1.11 djm 1043:
1.116 djm 1044: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1045: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1046: error("Couldn't readlink: %s", fx2txt(status));
1.116 djm 1047: sshbuf_free(msg);
1.11 djm 1048: return(NULL);
1049: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 1050: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 1051: SSH2_FXP_NAME, type);
1052:
1.116 djm 1053: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1054: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1055: if (count != 1)
1056: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
1057:
1.116 djm 1058: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
1059: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
1060: (r = decode_attrib(msg, &a)) != 0)
1061: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1062:
1063: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
1064:
1.98 djm 1065: free(longname);
1.11 djm 1066:
1.116 djm 1067: sshbuf_free(msg);
1.11 djm 1068:
1.116 djm 1069: return filename;
1.82 djm 1070: }
1071: #endif
1072:
1073: int
1.84 dtucker 1074: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 1075: int quiet)
1076: {
1.116 djm 1077: struct sshbuf *msg;
1.82 djm 1078: u_int id;
1.116 djm 1079: int r;
1.82 djm 1080:
1081: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
1082: error("Server does not support statvfs@openssh.com extension");
1083: return -1;
1084: }
1085:
1086: id = conn->msg_id++;
1087:
1.116 djm 1088: if ((msg = sshbuf_new()) == NULL)
1089: fatal("%s: sshbuf_new failed", __func__);
1090: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1091: (r = sshbuf_put_u32(msg, id)) != 0 ||
1092: (r = sshbuf_put_cstring(msg, "statvfs@openssh.com")) != 0 ||
1093: (r = sshbuf_put_cstring(msg, path)) != 0)
1094: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1095: send_msg(conn, msg);
1096: sshbuf_free(msg);
1.82 djm 1097:
1.93 djm 1098: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 1099: }
1100:
1101: #ifdef notyet
1102: int
1.116 djm 1103: do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.84 dtucker 1104: struct sftp_statvfs *st, int quiet)
1.82 djm 1105: {
1.116 djm 1106: struct sshbuf *msg;
1.82 djm 1107: u_int id;
1108:
1109: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
1110: error("Server does not support fstatvfs@openssh.com extension");
1111: return -1;
1112: }
1113:
1114: id = conn->msg_id++;
1115:
1.116 djm 1116: if ((msg = sshbuf_new()) == NULL)
1117: fatal("%s: sshbuf_new failed", __func__);
1118: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1119: (r = sshbuf_put_u32(msg, id)) != 0 ||
1120: (r = sshbuf_put_cstring(msg, "fstatvfs@openssh.com")) != 0 ||
1121: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1122: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1123: send_msg(conn, msg);
1124: sshbuf_free(msg);
1.82 djm 1125:
1.93 djm 1126: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 1127: }
1.78 chl 1128: #endif
1.1 djm 1129:
1.131 ! djm 1130: int
! 1131: do_lsetstat(struct sftp_conn *conn, const char *path, Attrib *a)
! 1132: {
! 1133: struct sshbuf *msg;
! 1134: u_int status, id;
! 1135: int r;
! 1136:
! 1137: if ((conn->exts & SFTP_EXT_LSETSTAT) == 0) {
! 1138: error("Server does not support lsetstat@openssh.com extension");
! 1139: return -1;
! 1140: }
! 1141:
! 1142: id = conn->msg_id++;
! 1143: if ((msg = sshbuf_new()) == NULL)
! 1144: fatal("%s: sshbuf_new failed", __func__);
! 1145: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
! 1146: (r = sshbuf_put_u32(msg, id)) != 0 ||
! 1147: (r = sshbuf_put_cstring(msg, "lsetstat@openssh.com")) != 0 ||
! 1148: (r = sshbuf_put_cstring(msg, path)) != 0 ||
! 1149: (r = encode_attrib(msg, a)) != 0)
! 1150: fatal("%s: buffer error: %s", __func__, ssh_err(r));
! 1151: send_msg(conn, msg);
! 1152: sshbuf_free(msg);
! 1153:
! 1154: status = get_status(conn, id);
! 1155: if (status != SSH2_FX_OK)
! 1156: error("Couldn't setstat on \"%s\": %s", path,
! 1157: fx2txt(status));
! 1158:
! 1159: return status == SSH2_FX_OK ? 0 : -1;
! 1160: }
! 1161:
1.21 djm 1162: static void
1.93 djm 1163: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
1.116 djm 1164: u_int len, const u_char *handle, u_int handle_len)
1.21 djm 1165: {
1.116 djm 1166: struct sshbuf *msg;
1167: int r;
1.28 markus 1168:
1.116 djm 1169: if ((msg = sshbuf_new()) == NULL)
1170: fatal("%s: sshbuf_new failed", __func__);
1171: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 ||
1172: (r = sshbuf_put_u32(msg, id)) != 0 ||
1173: (r = sshbuf_put_string(msg, handle, handle_len)) != 0 ||
1174: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1175: (r = sshbuf_put_u32(msg, len)) != 0)
1176: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1177: send_msg(conn, msg);
1178: sshbuf_free(msg);
1.28 markus 1179: }
1.21 djm 1180:
1.1 djm 1181: int
1.116 djm 1182: do_download(struct sftp_conn *conn, const char *remote_path,
1183: const char *local_path, Attrib *a, int preserve_flag, int resume_flag,
1184: int fsync_flag)
1.1 djm 1185: {
1.89 djm 1186: Attrib junk;
1.116 djm 1187: struct sshbuf *msg;
1188: u_char *handle;
1189: int local_fd = -1, write_error;
1190: int read_error, write_errno, reordered = 0, r;
1.101 djm 1191: u_int64_t offset = 0, size, highwater;
1.116 djm 1192: u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK;
1.39 fgsch 1193: off_t progress_counter;
1.116 djm 1194: size_t handle_len;
1.101 djm 1195: struct stat st;
1.21 djm 1196: struct request {
1197: u_int id;
1.116 djm 1198: size_t len;
1.21 djm 1199: u_int64_t offset;
1.28 markus 1200: TAILQ_ENTRY(request) tq;
1.21 djm 1201: };
1202: TAILQ_HEAD(reqhead, request) requests;
1203: struct request *req;
1.116 djm 1204: u_char type;
1.21 djm 1205:
1206: TAILQ_INIT(&requests);
1.1 djm 1207:
1.89 djm 1208: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1209: return -1;
1.1 djm 1210:
1.86 djm 1211: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1212: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1213: mode = a->perm & 0777;
1.1 djm 1214: else
1215: mode = 0666;
1216:
1.14 djm 1217: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1218: (!S_ISREG(a->perm))) {
1219: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1220: return(-1);
1221: }
1222:
1.21 djm 1223: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1224: size = a->size;
1225: else
1226: size = 0;
1227:
1.23 djm 1228: buflen = conn->transfer_buflen;
1.116 djm 1229: if ((msg = sshbuf_new()) == NULL)
1230: fatal("%s: sshbuf_new failed", __func__);
1231:
1232: attrib_clear(&junk); /* Send empty attributes */
1.1 djm 1233:
1234: /* Send open request */
1.23 djm 1235: id = conn->msg_id++;
1.116 djm 1236: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1237: (r = sshbuf_put_u32(msg, id)) != 0 ||
1238: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1239: (r = sshbuf_put_u32(msg, SSH2_FXF_READ)) != 0 ||
1240: (r = encode_attrib(msg, &junk)) != 0)
1241: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1242: send_msg(conn, msg);
1.33 deraadt 1243: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1244:
1.93 djm 1245: handle = get_handle(conn, id, &handle_len,
1.88 djm 1246: "remote open(\"%s\")", remote_path);
1.1 djm 1247: if (handle == NULL) {
1.116 djm 1248: sshbuf_free(msg);
1.1 djm 1249: return(-1);
1250: }
1251:
1.105 djm 1252: local_fd = open(local_path,
1253: O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
1.23 djm 1254: if (local_fd == -1) {
1255: error("Couldn't open local file \"%s\" for writing: %s",
1256: local_path, strerror(errno));
1.101 djm 1257: goto fail;
1258: }
1259: offset = highwater = 0;
1.105 djm 1260: if (resume_flag) {
1.101 djm 1261: if (fstat(local_fd, &st) == -1) {
1262: error("Unable to stat local file \"%s\": %s",
1263: local_path, strerror(errno));
1264: goto fail;
1265: }
1.113 djm 1266: if (st.st_size < 0) {
1267: error("\"%s\" has negative size", local_path);
1268: goto fail;
1269: }
1270: if ((u_int64_t)st.st_size > size) {
1.101 djm 1271: error("Unable to resume download of \"%s\": "
1272: "local file is larger than remote", local_path);
1273: fail:
1274: do_close(conn, handle, handle_len);
1.116 djm 1275: sshbuf_free(msg);
1.101 djm 1276: free(handle);
1.110 djm 1277: if (local_fd != -1)
1278: close(local_fd);
1.101 djm 1279: return -1;
1280: }
1281: offset = highwater = st.st_size;
1.23 djm 1282: }
1283:
1.1 djm 1284: /* Read from remote and write to local */
1.101 djm 1285: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1286: max_req = 1;
1.101 djm 1287: progress_counter = offset;
1.39 fgsch 1288:
1.47 djm 1289: if (showprogress && size != 0)
1290: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1291:
1.21 djm 1292: while (num_req > 0 || max_req > 0) {
1.116 djm 1293: u_char *data;
1294: size_t len;
1.1 djm 1295:
1.49 djm 1296: /*
1.51 deraadt 1297: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1298: * allow outstanding requests to drain gracefully
1299: */
1300: if (interrupted) {
1301: if (num_req == 0) /* If we haven't started yet... */
1302: break;
1303: max_req = 0;
1304: }
1305:
1.21 djm 1306: /* Send some more requests */
1307: while (num_req < max_req) {
1.28 markus 1308: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1309: (unsigned long long)offset,
1310: (unsigned long long)offset + buflen - 1,
1311: num_req, max_req);
1.108 djm 1312: req = xcalloc(1, sizeof(*req));
1.23 djm 1313: req->id = conn->msg_id++;
1.21 djm 1314: req->len = buflen;
1315: req->offset = offset;
1316: offset += buflen;
1317: num_req++;
1318: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1319: send_read_request(conn, req->id, req->offset,
1.21 djm 1320: req->len, handle, handle_len);
1321: }
1.1 djm 1322:
1.116 djm 1323: sshbuf_reset(msg);
1324: get_msg(conn, msg);
1325: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1326: (r = sshbuf_get_u32(msg, &id)) != 0)
1327: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.33 deraadt 1328: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1329:
1330: /* Find the request in our queue */
1.53 deraadt 1331: for (req = TAILQ_FIRST(&requests);
1.21 djm 1332: req != NULL && req->id != id;
1333: req = TAILQ_NEXT(req, tq))
1334: ;
1335: if (req == NULL)
1336: fatal("Unexpected reply %u", id);
1337:
1338: switch (type) {
1339: case SSH2_FXP_STATUS:
1.116 djm 1340: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1341: fatal("%s: buffer error: %s",
1342: __func__, ssh_err(r));
1.21 djm 1343: if (status != SSH2_FX_EOF)
1344: read_error = 1;
1345: max_req = 0;
1346: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1347: free(req);
1.21 djm 1348: num_req--;
1349: break;
1350: case SSH2_FXP_DATA:
1.116 djm 1351: if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
1352: fatal("%s: buffer error: %s",
1353: __func__, ssh_err(r));
1.26 itojun 1354: debug3("Received data %llu -> %llu",
1.28 markus 1355: (unsigned long long)req->offset,
1.26 itojun 1356: (unsigned long long)req->offset + len - 1);
1.21 djm 1357: if (len > req->len)
1358: fatal("Received more data than asked for "
1.116 djm 1359: "%zu > %zu", len, req->len);
1.21 djm 1360: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1361: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1362: !write_error) {
1363: write_errno = errno;
1364: write_error = 1;
1365: max_req = 0;
1366: }
1.101 djm 1367: else if (!reordered && req->offset <= highwater)
1368: highwater = req->offset + len;
1369: else if (!reordered && req->offset > highwater)
1370: reordered = 1;
1.39 fgsch 1371: progress_counter += len;
1.98 djm 1372: free(data);
1.1 djm 1373:
1.21 djm 1374: if (len == req->len) {
1375: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1376: free(req);
1.21 djm 1377: num_req--;
1378: } else {
1379: /* Resend the request for the missing data */
1380: debug3("Short data block, re-requesting "
1.26 itojun 1381: "%llu -> %llu (%2d)",
1.28 markus 1382: (unsigned long long)req->offset + len,
1.27 itojun 1383: (unsigned long long)req->offset +
1384: req->len - 1, num_req);
1.23 djm 1385: req->id = conn->msg_id++;
1.21 djm 1386: req->len -= len;
1387: req->offset += len;
1.93 djm 1388: send_read_request(conn, req->id,
1.23 djm 1389: req->offset, req->len, handle, handle_len);
1.21 djm 1390: /* Reduce the request size */
1391: if (len < buflen)
1.125 deraadt 1392: buflen = MAXIMUM(MIN_READ_SIZE, len);
1.21 djm 1393: }
1394: if (max_req > 0) { /* max_req = 0 iff EOF received */
1395: if (size > 0 && offset > size) {
1396: /* Only one request at a time
1397: * after the expected EOF */
1398: debug3("Finish at %llu (%2d)",
1.26 itojun 1399: (unsigned long long)offset,
1400: num_req);
1.21 djm 1401: max_req = 1;
1.49 djm 1402: } else if (max_req <= conn->num_requests) {
1.21 djm 1403: ++max_req;
1404: }
1.1 djm 1405: }
1.21 djm 1406: break;
1407: default:
1.33 deraadt 1408: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1409: SSH2_FXP_DATA, type);
1410: }
1.21 djm 1411: }
1.1 djm 1412:
1.39 fgsch 1413: if (showprogress && size)
1414: stop_progress_meter();
1415:
1.21 djm 1416: /* Sanity check */
1417: if (TAILQ_FIRST(&requests) != NULL)
1418: fatal("Transfer complete, but requests still in queue");
1.101 djm 1419: /* Truncate at highest contiguous point to avoid holes on interrupt */
1420: if (read_error || write_error || interrupted) {
1.105 djm 1421: if (reordered && resume_flag) {
1.101 djm 1422: error("Unable to resume download of \"%s\": "
1423: "server reordered requests", local_path);
1424: }
1425: debug("truncating at %llu", (unsigned long long)highwater);
1.120 djm 1426: if (ftruncate(local_fd, highwater) == -1)
1427: error("ftruncate \"%s\": %s", local_path,
1428: strerror(errno));
1.101 djm 1429: }
1.21 djm 1430: if (read_error) {
1.28 markus 1431: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1432: remote_path, fx2txt(status));
1.103 djm 1433: status = -1;
1.23 djm 1434: do_close(conn, handle, handle_len);
1.21 djm 1435: } else if (write_error) {
1436: error("Couldn't write to \"%s\": %s", local_path,
1437: strerror(write_errno));
1.116 djm 1438: status = SSH2_FX_FAILURE;
1.23 djm 1439: do_close(conn, handle, handle_len);
1.21 djm 1440: } else {
1.116 djm 1441: if (do_close(conn, handle, handle_len) != 0 || interrupted)
1442: status = SSH2_FX_FAILURE;
1443: else
1444: status = SSH2_FX_OK;
1.21 djm 1445: /* Override umask and utimes if asked */
1.105 djm 1446: if (preserve_flag && fchmod(local_fd, mode) == -1)
1.21 djm 1447: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1448: strerror(errno));
1.105 djm 1449: if (preserve_flag &&
1450: (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1.21 djm 1451: struct timeval tv[2];
1452: tv[0].tv_sec = a->atime;
1453: tv[1].tv_sec = a->mtime;
1454: tv[0].tv_usec = tv[1].tv_usec = 0;
1455: if (utimes(local_path, tv) == -1)
1456: error("Can't set times on \"%s\": %s",
1.37 deraadt 1457: local_path, strerror(errno));
1.1 djm 1458: }
1.107 djm 1459: if (fsync_flag) {
1460: debug("syncing \"%s\"", local_path);
1461: if (fsync(local_fd) == -1)
1462: error("Couldn't sync file \"%s\": %s",
1463: local_path, strerror(errno));
1464: }
1.10 djm 1465: }
1.5 djm 1466: close(local_fd);
1.116 djm 1467: sshbuf_free(msg);
1.98 djm 1468: free(handle);
1.23 djm 1469:
1.129 djm 1470: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1471: }
1472:
1.89 djm 1473: static int
1.116 djm 1474: download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1475: int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
1476: int resume_flag, int fsync_flag)
1.89 djm 1477: {
1478: int i, ret = 0;
1479: SFTP_DIRENT **dir_entries;
1.130 djm 1480: char *filename, *new_src = NULL, *new_dst = NULL;
1.89 djm 1481: mode_t mode = 0777;
1482:
1483: if (depth >= MAX_DIR_DEPTH) {
1484: error("Maximum directory depth exceeded: %d levels", depth);
1485: return -1;
1486: }
1487:
1488: if (dirattrib == NULL &&
1489: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1490: error("Unable to stat remote directory \"%s\"", src);
1491: return -1;
1492: }
1493: if (!S_ISDIR(dirattrib->perm)) {
1494: error("\"%s\" is not a directory", src);
1495: return -1;
1496: }
1.105 djm 1497: if (print_flag)
1.124 schwarze 1498: mprintf("Retrieving %s\n", src);
1.89 djm 1499:
1500: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1501: mode = dirattrib->perm & 01777;
1502: else {
1503: debug("Server did not send permissions for "
1504: "directory \"%s\"", dst);
1505: }
1506:
1507: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1508: error("mkdir %s: %s", dst, strerror(errno));
1509: return -1;
1510: }
1511:
1512: if (do_readdir(conn, src, &dir_entries) == -1) {
1513: error("%s: Failed to get directory contents", src);
1514: return -1;
1515: }
1516:
1517: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1.130 djm 1518: free(new_dst);
1519: free(new_src);
1520:
1.89 djm 1521: filename = dir_entries[i]->filename;
1522: new_dst = path_append(dst, filename);
1523: new_src = path_append(src, filename);
1524:
1525: if (S_ISDIR(dir_entries[i]->a.perm)) {
1526: if (strcmp(filename, ".") == 0 ||
1527: strcmp(filename, "..") == 0)
1528: continue;
1529: if (download_dir_internal(conn, new_src, new_dst,
1.105 djm 1530: depth + 1, &(dir_entries[i]->a), preserve_flag,
1.107 djm 1531: print_flag, resume_flag, fsync_flag) == -1)
1.89 djm 1532: ret = -1;
1533: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1534: if (do_download(conn, new_src, new_dst,
1.107 djm 1535: &(dir_entries[i]->a), preserve_flag,
1536: resume_flag, fsync_flag) == -1) {
1.89 djm 1537: error("Download of file %s to %s failed",
1538: new_src, new_dst);
1539: ret = -1;
1540: }
1541: } else
1542: logit("%s: not a regular file\n", new_src);
1543:
1544: }
1.130 djm 1545: free(new_dst);
1546: free(new_src);
1.89 djm 1547:
1.105 djm 1548: if (preserve_flag) {
1.89 djm 1549: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1550: struct timeval tv[2];
1551: tv[0].tv_sec = dirattrib->atime;
1552: tv[1].tv_sec = dirattrib->mtime;
1553: tv[0].tv_usec = tv[1].tv_usec = 0;
1554: if (utimes(dst, tv) == -1)
1555: error("Can't set times on \"%s\": %s",
1556: dst, strerror(errno));
1557: } else
1558: debug("Server did not send times for directory "
1559: "\"%s\"", dst);
1560: }
1561:
1562: free_sftp_dirents(dir_entries);
1563:
1564: return ret;
1565: }
1566:
1567: int
1.116 djm 1568: download_dir(struct sftp_conn *conn, const char *src, const char *dst,
1569: Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
1570: int fsync_flag)
1.89 djm 1571: {
1572: char *src_canon;
1573: int ret;
1574:
1575: if ((src_canon = do_realpath(conn, src)) == NULL) {
1.107 djm 1576: error("Unable to canonicalize path \"%s\"", src);
1.89 djm 1577: return -1;
1578: }
1579:
1.105 djm 1580: ret = download_dir_internal(conn, src_canon, dst, 0,
1.107 djm 1581: dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag);
1.98 djm 1582: free(src_canon);
1.89 djm 1583: return ret;
1584: }
1585:
1.1 djm 1586: int
1.116 djm 1587: do_upload(struct sftp_conn *conn, const char *local_path,
1588: const char *remote_path, int preserve_flag, int resume, int fsync_flag)
1.1 djm 1589: {
1.116 djm 1590: int r, local_fd;
1591: u_int status = SSH2_FX_OK;
1592: u_int id;
1593: u_char type;
1.100 dtucker 1594: off_t offset, progress_counter;
1.116 djm 1595: u_char *handle, *data;
1596: struct sshbuf *msg;
1.1 djm 1597: struct stat sb;
1.115 logan 1598: Attrib a, *c = NULL;
1.21 djm 1599: u_int32_t startid;
1600: u_int32_t ackid;
1.22 djm 1601: struct outstanding_ack {
1602: u_int id;
1603: u_int len;
1.77 djm 1604: off_t offset;
1.28 markus 1605: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1606: };
1607: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1608: struct outstanding_ack *ack = NULL;
1.116 djm 1609: size_t handle_len;
1.22 djm 1610:
1611: TAILQ_INIT(&acks);
1.1 djm 1612:
1613: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1614: error("Couldn't open local file \"%s\" for reading: %s",
1615: local_path, strerror(errno));
1616: return(-1);
1617: }
1618: if (fstat(local_fd, &sb) == -1) {
1619: error("Couldn't fstat local file \"%s\": %s",
1620: local_path, strerror(errno));
1.41 djm 1621: close(local_fd);
1622: return(-1);
1623: }
1624: if (!S_ISREG(sb.st_mode)) {
1625: error("%s is not a regular file", local_path);
1.1 djm 1626: close(local_fd);
1627: return(-1);
1628: }
1629: stat_to_attrib(&sb, &a);
1630:
1631: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1632: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1633: a.perm &= 0777;
1.105 djm 1634: if (!preserve_flag)
1.1 djm 1635: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1636:
1.115 logan 1637: if (resume) {
1638: /* Get remote file size if it exists */
1639: if ((c = do_stat(conn, remote_path, 0)) == NULL) {
1.122 djm 1640: close(local_fd);
1.115 logan 1641: return -1;
1642: }
1643:
1644: if ((off_t)c->size >= sb.st_size) {
1645: error("destination file bigger or same size as "
1646: "source file");
1647: close(local_fd);
1648: return -1;
1649: }
1650:
1651: if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
1652: close(local_fd);
1653: return -1;
1654: }
1655: }
1656:
1.116 djm 1657: if ((msg = sshbuf_new()) == NULL)
1658: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 1659:
1660: /* Send open request */
1.23 djm 1661: id = conn->msg_id++;
1.116 djm 1662: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1663: (r = sshbuf_put_u32(msg, id)) != 0 ||
1664: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1665: (r = sshbuf_put_u32(msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|
1666: (resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC))) != 0 ||
1667: (r = encode_attrib(msg, &a)) != 0)
1668: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1669: send_msg(conn, msg);
1.33 deraadt 1670: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1671:
1.116 djm 1672: sshbuf_reset(msg);
1.1 djm 1673:
1.93 djm 1674: handle = get_handle(conn, id, &handle_len,
1.88 djm 1675: "remote open(\"%s\")", remote_path);
1.1 djm 1676: if (handle == NULL) {
1677: close(local_fd);
1.116 djm 1678: sshbuf_free(msg);
1.80 djm 1679: return -1;
1.1 djm 1680: }
1681:
1.21 djm 1682: startid = ackid = id + 1;
1.23 djm 1683: data = xmalloc(conn->transfer_buflen);
1.20 djm 1684:
1.1 djm 1685: /* Read from local and write to remote */
1.115 logan 1686: offset = progress_counter = (resume ? c->size : 0);
1.39 fgsch 1687: if (showprogress)
1.100 dtucker 1688: start_progress_meter(local_path, sb.st_size,
1689: &progress_counter);
1.39 fgsch 1690:
1.19 deraadt 1691: for (;;) {
1.1 djm 1692: int len;
1693:
1694: /*
1.51 deraadt 1695: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1696: * thus losing the last block of the file.
1.51 deraadt 1697: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1698: * server to drain.
1.1 djm 1699: */
1.80 djm 1700: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1701: len = 0;
1702: else do
1.23 djm 1703: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1704: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1705:
1706: if (len == -1)
1707: fatal("Couldn't read from \"%s\": %s", local_path,
1708: strerror(errno));
1.21 djm 1709:
1710: if (len != 0) {
1.108 djm 1711: ack = xcalloc(1, sizeof(*ack));
1.22 djm 1712: ack->id = ++id;
1713: ack->offset = offset;
1714: ack->len = len;
1715: TAILQ_INSERT_TAIL(&acks, ack, tq);
1716:
1.116 djm 1717: sshbuf_reset(msg);
1718: if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
1719: (r = sshbuf_put_u32(msg, ack->id)) != 0 ||
1720: (r = sshbuf_put_string(msg, handle,
1721: handle_len)) != 0 ||
1722: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1723: (r = sshbuf_put_string(msg, data, len)) != 0)
1724: fatal("%s: buffer error: %s",
1725: __func__, ssh_err(r));
1726: send_msg(conn, msg);
1.33 deraadt 1727: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1728: id, (unsigned long long)offset, len);
1.22 djm 1729: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1730: break;
1731:
1.22 djm 1732: if (ack == NULL)
1733: fatal("Unexpected ACK %u", id);
1734:
1.28 markus 1735: if (id == startid || len == 0 ||
1.23 djm 1736: id - ackid >= conn->num_requests) {
1.116 djm 1737: u_int rid;
1.31 djm 1738:
1.116 djm 1739: sshbuf_reset(msg);
1740: get_msg(conn, msg);
1741: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1742: (r = sshbuf_get_u32(msg, &rid)) != 0)
1743: fatal("%s: buffer error: %s",
1744: __func__, ssh_err(r));
1.22 djm 1745:
1746: if (type != SSH2_FXP_STATUS)
1747: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1748: "got %d", SSH2_FXP_STATUS, type);
1749:
1.116 djm 1750: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1751: fatal("%s: buffer error: %s",
1752: __func__, ssh_err(r));
1753: debug3("SSH2_FXP_STATUS %u", status);
1.22 djm 1754:
1755: /* Find the request in our queue */
1.53 deraadt 1756: for (ack = TAILQ_FIRST(&acks);
1.116 djm 1757: ack != NULL && ack->id != rid;
1.22 djm 1758: ack = TAILQ_NEXT(ack, tq))
1759: ;
1760: if (ack == NULL)
1.116 djm 1761: fatal("Can't find request for ID %u", rid);
1.22 djm 1762: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1763: debug3("In write loop, ack for %u %u bytes at %lld",
1764: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1765: ++ackid;
1.100 dtucker 1766: progress_counter += ack->len;
1.98 djm 1767: free(ack);
1.1 djm 1768: }
1769: offset += len;
1.77 djm 1770: if (offset < 0)
1771: fatal("%s: offset < 0", __func__);
1.1 djm 1772: }
1.116 djm 1773: sshbuf_free(msg);
1.80 djm 1774:
1.39 fgsch 1775: if (showprogress)
1776: stop_progress_meter();
1.98 djm 1777: free(data);
1.1 djm 1778:
1.80 djm 1779: if (status != SSH2_FX_OK) {
1780: error("Couldn't write to remote file \"%s\": %s",
1781: remote_path, fx2txt(status));
1.116 djm 1782: status = SSH2_FX_FAILURE;
1.80 djm 1783: }
1784:
1.1 djm 1785: if (close(local_fd) == -1) {
1786: error("Couldn't close local file \"%s\": %s", local_path,
1787: strerror(errno));
1.116 djm 1788: status = SSH2_FX_FAILURE;
1.1 djm 1789: }
1790:
1.10 djm 1791: /* Override umask and utimes if asked */
1.105 djm 1792: if (preserve_flag)
1.23 djm 1793: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1794:
1.107 djm 1795: if (fsync_flag)
1796: (void)do_fsync(conn, handle, handle_len);
1797:
1.121 djm 1798: if (do_close(conn, handle, handle_len) != 0)
1.116 djm 1799: status = SSH2_FX_FAILURE;
1800:
1.98 djm 1801: free(handle);
1.5 djm 1802:
1.116 djm 1803: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1804: }
1.89 djm 1805:
1806: static int
1.116 djm 1807: upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1808: int depth, int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1809: {
1.116 djm 1810: int ret = 0;
1.89 djm 1811: DIR *dirp;
1812: struct dirent *dp;
1.130 djm 1813: char *filename, *new_src = NULL, *new_dst = NULL;
1.89 djm 1814: struct stat sb;
1.121 djm 1815: Attrib a, *dirattrib;
1.89 djm 1816:
1817: if (depth >= MAX_DIR_DEPTH) {
1818: error("Maximum directory depth exceeded: %d levels", depth);
1819: return -1;
1820: }
1821:
1822: if (stat(src, &sb) == -1) {
1823: error("Couldn't stat directory \"%s\": %s",
1824: src, strerror(errno));
1825: return -1;
1826: }
1827: if (!S_ISDIR(sb.st_mode)) {
1828: error("\"%s\" is not a directory", src);
1829: return -1;
1830: }
1.105 djm 1831: if (print_flag)
1.124 schwarze 1832: mprintf("Entering %s\n", src);
1.89 djm 1833:
1834: attrib_clear(&a);
1835: stat_to_attrib(&sb, &a);
1836: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1837: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1838: a.perm &= 01777;
1.105 djm 1839: if (!preserve_flag)
1.89 djm 1840: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 1841:
1.89 djm 1842: /*
1.121 djm 1843: * sftp lacks a portable status value to match errno EEXIST,
1844: * so if we get a failure back then we must check whether
1845: * the path already existed and is a directory.
1.89 djm 1846: */
1.121 djm 1847: if (do_mkdir(conn, dst, &a, 0) != 0) {
1848: if ((dirattrib = do_stat(conn, dst, 0)) == NULL)
1.89 djm 1849: return -1;
1.121 djm 1850: if (!S_ISDIR(dirattrib->perm)) {
1851: error("\"%s\" exists but is not a directory", dst);
1.89 djm 1852: return -1;
1.121 djm 1853: }
1.89 djm 1854: }
1855:
1856: if ((dirp = opendir(src)) == NULL) {
1857: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1858: return -1;
1859: }
1.101 djm 1860:
1.89 djm 1861: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1862: if (dp->d_ino == 0)
1863: continue;
1.130 djm 1864: free(new_dst);
1865: free(new_src);
1.89 djm 1866: filename = dp->d_name;
1867: new_dst = path_append(dst, filename);
1868: new_src = path_append(src, filename);
1869:
1.90 dtucker 1870: if (lstat(new_src, &sb) == -1) {
1871: logit("%s: lstat failed: %s", filename,
1872: strerror(errno));
1873: ret = -1;
1874: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1875: if (strcmp(filename, ".") == 0 ||
1876: strcmp(filename, "..") == 0)
1877: continue;
1878:
1879: if (upload_dir_internal(conn, new_src, new_dst,
1.115 logan 1880: depth + 1, preserve_flag, print_flag, resume,
1.107 djm 1881: fsync_flag) == -1)
1.89 djm 1882: ret = -1;
1.90 dtucker 1883: } else if (S_ISREG(sb.st_mode)) {
1.105 djm 1884: if (do_upload(conn, new_src, new_dst,
1.115 logan 1885: preserve_flag, resume, fsync_flag) == -1) {
1.89 djm 1886: error("Uploading of file %s to %s failed!",
1887: new_src, new_dst);
1888: ret = -1;
1889: }
1890: } else
1891: logit("%s: not a regular file\n", filename);
1892: }
1.130 djm 1893: free(new_dst);
1894: free(new_src);
1.89 djm 1895:
1896: do_setstat(conn, dst, &a);
1897:
1898: (void) closedir(dirp);
1899: return ret;
1900: }
1901:
1902: int
1.116 djm 1903: upload_dir(struct sftp_conn *conn, const char *src, const char *dst,
1904: int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1905: {
1906: char *dst_canon;
1907: int ret;
1908:
1909: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1.107 djm 1910: error("Unable to canonicalize path \"%s\"", dst);
1.89 djm 1911: return -1;
1912: }
1913:
1.106 djm 1914: ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
1.115 logan 1915: print_flag, resume, fsync_flag);
1.107 djm 1916:
1.98 djm 1917: free(dst_canon);
1.89 djm 1918: return ret;
1919: }
1920:
1921: char *
1.116 djm 1922: path_append(const char *p1, const char *p2)
1.89 djm 1923: {
1924: char *ret;
1925: size_t len = strlen(p1) + strlen(p2) + 2;
1926:
1927: ret = xmalloc(len);
1928: strlcpy(ret, p1, len);
1929: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1930: strlcat(ret, "/", len);
1931: strlcat(ret, p2, len);
1932:
1933: return(ret);
1934: }
1935:
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