Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.134
1.134 ! djm 1: /* $OpenBSD: sftp-client.c,v 1.133 2019/01/24 16:52:17 dtucker 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:
1.133 dtucker 91: refresh_progress_meter(0);
1.132 dtucker 92: if (bwlimit != NULL)
93: bandwidth_limit(bwlimit, amount);
1.93 djm 94: return 0;
95: }
1.88 djm 96:
1.17 itojun 97: static void
1.116 djm 98: send_msg(struct sftp_conn *conn, struct sshbuf *m)
1.1 djm 99: {
1.40 djm 100: u_char mlen[4];
1.65 djm 101: struct iovec iov[2];
1.40 djm 102:
1.116 djm 103: if (sshbuf_len(m) > SFTP_MAX_MSG_LENGTH)
104: fatal("Outbound message too long %zu", sshbuf_len(m));
1.40 djm 105:
106: /* Send length first */
1.116 djm 107: put_u32(mlen, sshbuf_len(m));
1.65 djm 108: iov[0].iov_base = mlen;
109: iov[0].iov_len = sizeof(mlen);
1.116 djm 110: iov[1].iov_base = (u_char *)sshbuf_ptr(m);
111: iov[1].iov_len = sshbuf_len(m);
1.74 deraadt 112:
1.132 dtucker 113: if (atomiciov6(writev, conn->fd_out, iov, 2, sftpio,
114: conn->limit_kbps > 0 ? &conn->bwlimit_out : NULL) !=
1.116 djm 115: sshbuf_len(m) + sizeof(mlen))
1.1 djm 116: fatal("Couldn't send packet: %s", strerror(errno));
117:
1.116 djm 118: sshbuf_reset(m);
1.1 djm 119: }
120:
1.17 itojun 121: static void
1.128 dtucker 122: get_msg_extended(struct sftp_conn *conn, struct sshbuf *m, int initial)
1.1 djm 123: {
1.40 djm 124: u_int msg_len;
1.116 djm 125: u_char *p;
126: int r;
1.1 djm 127:
1.116 djm 128: if ((r = sshbuf_reserve(m, 4, &p)) != 0)
129: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.132 dtucker 130: if (atomicio6(read, conn->fd_in, p, 4, sftpio,
131: conn->limit_kbps > 0 ? &conn->bwlimit_in : NULL) != 4) {
1.127 djm 132: if (errno == EPIPE || errno == ECONNRESET)
1.54 avsm 133: fatal("Connection closed");
134: else
135: fatal("Couldn't read packet: %s", strerror(errno));
136: }
1.1 djm 137:
1.116 djm 138: if ((r = sshbuf_get_u32(m, &msg_len)) != 0)
139: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.128 dtucker 140: if (msg_len > SFTP_MAX_MSG_LENGTH) {
141: do_log2(initial ? SYSLOG_LEVEL_ERROR : SYSLOG_LEVEL_FATAL,
142: "Received message too long %u", msg_len);
143: fatal("Ensure the remote shell produces no output "
144: "for non-interactive sessions.");
145: }
1.1 djm 146:
1.116 djm 147: if ((r = sshbuf_reserve(m, msg_len, &p)) != 0)
148: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.132 dtucker 149: if (atomicio6(read, conn->fd_in, p, msg_len, sftpio,
150: conn->limit_kbps > 0 ? &conn->bwlimit_in : NULL)
1.93 djm 151: != msg_len) {
1.54 avsm 152: if (errno == EPIPE)
153: fatal("Connection closed");
154: else
155: fatal("Read packet: %s", strerror(errno));
156: }
1.1 djm 157: }
158:
1.17 itojun 159: static void
1.128 dtucker 160: get_msg(struct sftp_conn *conn, struct sshbuf *m)
161: {
162: get_msg_extended(conn, m, 0);
163: }
164:
165: static void
1.116 djm 166: send_string_request(struct sftp_conn *conn, u_int id, u_int code, const char *s,
1.1 djm 167: u_int len)
168: {
1.116 djm 169: struct sshbuf *msg;
170: int r;
1.1 djm 171:
1.116 djm 172: if ((msg = sshbuf_new()) == NULL)
173: fatal("%s: sshbuf_new failed", __func__);
174: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
175: (r = sshbuf_put_u32(msg, id)) != 0 ||
176: (r = sshbuf_put_string(msg, s, len)) != 0)
177: fatal("%s: buffer error: %s", __func__, ssh_err(r));
178: send_msg(conn, msg);
1.93 djm 179: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.116 djm 180: sshbuf_free(msg);
1.1 djm 181: }
182:
1.17 itojun 183: static void
1.93 djm 184: send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
1.116 djm 185: const void *s, u_int len, Attrib *a)
1.1 djm 186: {
1.116 djm 187: struct sshbuf *msg;
188: int r;
1.1 djm 189:
1.116 djm 190: if ((msg = sshbuf_new()) == NULL)
191: fatal("%s: sshbuf_new failed", __func__);
192: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
193: (r = sshbuf_put_u32(msg, id)) != 0 ||
194: (r = sshbuf_put_string(msg, s, len)) != 0 ||
195: (r = encode_attrib(msg, a)) != 0)
196: fatal("%s: buffer error: %s", __func__, ssh_err(r));
197: send_msg(conn, msg);
1.93 djm 198: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.116 djm 199: sshbuf_free(msg);
1.1 djm 200: }
201:
1.17 itojun 202: static u_int
1.93 djm 203: get_status(struct sftp_conn *conn, u_int expected_id)
1.1 djm 204: {
1.116 djm 205: struct sshbuf *msg;
206: u_char type;
207: u_int id, status;
208: int r;
1.1 djm 209:
1.116 djm 210: if ((msg = sshbuf_new()) == NULL)
211: fatal("%s: sshbuf_new failed", __func__);
212: get_msg(conn, msg);
213: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
214: (r = sshbuf_get_u32(msg, &id)) != 0)
215: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 216:
217: if (id != expected_id)
1.33 deraadt 218: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 219: if (type != SSH2_FXP_STATUS)
1.33 deraadt 220: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 221: SSH2_FXP_STATUS, type);
222:
1.116 djm 223: if ((r = sshbuf_get_u32(msg, &status)) != 0)
224: fatal("%s: buffer error: %s", __func__, ssh_err(r));
225: sshbuf_free(msg);
1.1 djm 226:
1.33 deraadt 227: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 228:
1.93 djm 229: return status;
1.1 djm 230: }
231:
1.116 djm 232: static u_char *
233: get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
1.93 djm 234: const char *errfmt, ...)
1.1 djm 235: {
1.116 djm 236: struct sshbuf *msg;
237: u_int id, status;
238: u_char type;
239: u_char *handle;
240: char errmsg[256];
1.88 djm 241: va_list args;
1.116 djm 242: int r;
1.88 djm 243:
244: va_start(args, errfmt);
245: if (errfmt != NULL)
246: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
247: va_end(args);
1.1 djm 248:
1.116 djm 249: if ((msg = sshbuf_new()) == NULL)
250: fatal("%s: sshbuf_new failed", __func__);
251: get_msg(conn, msg);
252: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
253: (r = sshbuf_get_u32(msg, &id)) != 0)
254: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 255:
256: if (id != expected_id)
1.88 djm 257: fatal("%s: ID mismatch (%u != %u)",
258: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 259: if (type == SSH2_FXP_STATUS) {
1.116 djm 260: if ((r = sshbuf_get_u32(msg, &status)) != 0)
261: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.88 djm 262: if (errfmt != NULL)
263: error("%s: %s", errmsg, fx2txt(status));
1.116 djm 264: sshbuf_free(msg);
1.1 djm 265: return(NULL);
266: } else if (type != SSH2_FXP_HANDLE)
1.88 djm 267: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
268: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 269:
1.116 djm 270: if ((r = sshbuf_get_string(msg, &handle, len)) != 0)
271: fatal("%s: buffer error: %s", __func__, ssh_err(r));
272: sshbuf_free(msg);
1.1 djm 273:
1.116 djm 274: return handle;
1.1 djm 275: }
276:
1.17 itojun 277: static Attrib *
1.93 djm 278: get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
1.1 djm 279: {
1.116 djm 280: struct sshbuf *msg;
281: u_int id;
282: u_char type;
283: int r;
284: static Attrib a;
285:
286: if ((msg = sshbuf_new()) == NULL)
287: fatal("%s: sshbuf_new failed", __func__);
288: get_msg(conn, msg);
289:
290: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
291: (r = sshbuf_get_u32(msg, &id)) != 0)
292: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 293:
1.33 deraadt 294: debug3("Received stat reply T:%u I:%u", type, id);
1.1 djm 295: if (id != expected_id)
1.33 deraadt 296: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 297: if (type == SSH2_FXP_STATUS) {
1.116 djm 298: u_int status;
1.1 djm 299:
1.116 djm 300: if ((r = sshbuf_get_u32(msg, &status)) != 0)
301: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.14 djm 302: if (quiet)
303: debug("Couldn't stat remote file: %s", fx2txt(status));
304: else
305: error("Couldn't stat remote file: %s", fx2txt(status));
1.116 djm 306: sshbuf_free(msg);
1.1 djm 307: return(NULL);
308: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 309: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 310: SSH2_FXP_ATTRS, type);
311: }
1.116 djm 312: if ((r = decode_attrib(msg, &a)) != 0) {
313: error("%s: couldn't decode attrib: %s", __func__, ssh_err(r));
314: sshbuf_free(msg);
315: return NULL;
316: }
317: sshbuf_free(msg);
1.1 djm 318:
1.116 djm 319: return &a;
1.1 djm 320: }
321:
1.82 djm 322: static int
1.93 djm 323: get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
324: u_int expected_id, int quiet)
1.82 djm 325: {
1.116 djm 326: struct sshbuf *msg;
327: u_char type;
328: u_int id;
329: u_int64_t flag;
330: int r;
1.82 djm 331:
1.116 djm 332: if ((msg = sshbuf_new()) == NULL)
333: fatal("%s: sshbuf_new failed", __func__);
334: get_msg(conn, msg);
335:
336: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
337: (r = sshbuf_get_u32(msg, &id)) != 0)
338: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 339:
340: debug3("Received statvfs reply T:%u I:%u", type, id);
341: if (id != expected_id)
342: fatal("ID mismatch (%u != %u)", id, expected_id);
343: if (type == SSH2_FXP_STATUS) {
1.116 djm 344: u_int status;
1.82 djm 345:
1.116 djm 346: if ((r = sshbuf_get_u32(msg, &status)) != 0)
347: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 348: if (quiet)
349: debug("Couldn't statvfs: %s", fx2txt(status));
350: else
351: error("Couldn't statvfs: %s", fx2txt(status));
1.116 djm 352: sshbuf_free(msg);
1.82 djm 353: return -1;
354: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
355: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
356: SSH2_FXP_EXTENDED_REPLY, type);
357: }
358:
1.114 tedu 359: memset(st, 0, sizeof(*st));
1.116 djm 360: if ((r = sshbuf_get_u64(msg, &st->f_bsize)) != 0 ||
361: (r = sshbuf_get_u64(msg, &st->f_frsize)) != 0 ||
362: (r = sshbuf_get_u64(msg, &st->f_blocks)) != 0 ||
363: (r = sshbuf_get_u64(msg, &st->f_bfree)) != 0 ||
364: (r = sshbuf_get_u64(msg, &st->f_bavail)) != 0 ||
365: (r = sshbuf_get_u64(msg, &st->f_files)) != 0 ||
366: (r = sshbuf_get_u64(msg, &st->f_ffree)) != 0 ||
367: (r = sshbuf_get_u64(msg, &st->f_favail)) != 0 ||
368: (r = sshbuf_get_u64(msg, &st->f_fsid)) != 0 ||
369: (r = sshbuf_get_u64(msg, &flag)) != 0 ||
370: (r = sshbuf_get_u64(msg, &st->f_namemax)) != 0)
371: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 372:
373: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
374: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
375:
1.116 djm 376: sshbuf_free(msg);
1.82 djm 377:
378: return 0;
379: }
380:
1.23 djm 381: struct sftp_conn *
1.93 djm 382: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
383: u_int64_t limit_kbps)
1.1 djm 384: {
1.116 djm 385: u_char type;
386: struct sshbuf *msg;
1.23 djm 387: struct sftp_conn *ret;
1.116 djm 388: int r;
1.1 djm 389:
1.103 djm 390: ret = xcalloc(1, sizeof(*ret));
391: ret->msg_id = 1;
1.93 djm 392: ret->fd_in = fd_in;
393: ret->fd_out = fd_out;
394: ret->transfer_buflen = transfer_buflen;
395: ret->num_requests = num_requests;
396: ret->exts = 0;
397: ret->limit_kbps = 0;
398:
1.116 djm 399: if ((msg = sshbuf_new()) == NULL)
400: fatal("%s: sshbuf_new failed", __func__);
401: if ((r = sshbuf_put_u8(msg, SSH2_FXP_INIT)) != 0 ||
402: (r = sshbuf_put_u32(msg, SSH2_FILEXFER_VERSION)) != 0)
403: fatal("%s: buffer error: %s", __func__, ssh_err(r));
404: send_msg(ret, msg);
1.1 djm 405:
1.116 djm 406: sshbuf_reset(msg);
1.1 djm 407:
1.128 dtucker 408: get_msg_extended(ret, msg, 1);
1.1 djm 409:
1.3 stevesk 410: /* Expecting a VERSION reply */
1.116 djm 411: if ((r = sshbuf_get_u8(msg, &type)) != 0)
412: fatal("%s: buffer error: %s", __func__, ssh_err(r));
413: if (type != SSH2_FXP_VERSION) {
1.33 deraadt 414: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 415: type);
1.116 djm 416: sshbuf_free(msg);
1.119 jsg 417: free(ret);
1.23 djm 418: return(NULL);
1.1 djm 419: }
1.116 djm 420: if ((r = sshbuf_get_u32(msg, &ret->version)) != 0)
421: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 422:
1.93 djm 423: debug2("Remote version: %u", ret->version);
1.1 djm 424:
425: /* Check for extensions */
1.116 djm 426: while (sshbuf_len(msg) > 0) {
427: char *name;
428: u_char *value;
429: size_t vlen;
1.85 djm 430: int known = 0;
1.1 djm 431:
1.116 djm 432: if ((r = sshbuf_get_cstring(msg, &name, NULL)) != 0 ||
433: (r = sshbuf_get_string(msg, &value, &vlen)) != 0)
434: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.82 djm 435: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.116 djm 436: strcmp((char *)value, "1") == 0) {
1.93 djm 437: ret->exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 438: known = 1;
439: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
1.116 djm 440: strcmp((char *)value, "2") == 0) {
1.93 djm 441: ret->exts |= SFTP_EXT_STATVFS;
1.85 djm 442: known = 1;
1.94 djm 443: } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
1.116 djm 444: strcmp((char *)value, "2") == 0) {
1.93 djm 445: ret->exts |= SFTP_EXT_FSTATVFS;
1.85 djm 446: known = 1;
1.94 djm 447: } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
1.116 djm 448: strcmp((char *)value, "1") == 0) {
1.94 djm 449: ret->exts |= SFTP_EXT_HARDLINK;
450: known = 1;
1.116 djm 451: } else if (strcmp(name, "fsync@openssh.com") == 0 &&
452: strcmp((char *)value, "1") == 0) {
453: ret->exts |= SFTP_EXT_FSYNC;
454: known = 1;
1.131 djm 455: } else if (strcmp(name, "lsetstat@openssh.com") == 0 &&
456: strcmp((char *)value, "1") == 0) {
457: ret->exts |= SFTP_EXT_LSETSTAT;
458: known = 1;
1.85 djm 459: }
460: if (known) {
461: debug2("Server supports extension \"%s\" revision %s",
462: name, value);
463: } else {
464: debug2("Unrecognised server extension \"%s\"", name);
465: }
1.98 djm 466: free(name);
467: free(value);
1.1 djm 468: }
469:
1.116 djm 470: sshbuf_free(msg);
1.11 djm 471:
1.23 djm 472: /* Some filexfer v.0 servers don't support large packets */
1.93 djm 473: if (ret->version == 0)
1.125 deraadt 474: ret->transfer_buflen = MINIMUM(ret->transfer_buflen, 20480);
1.23 djm 475:
1.93 djm 476: ret->limit_kbps = limit_kbps;
477: if (ret->limit_kbps > 0) {
478: bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
479: ret->transfer_buflen);
480: bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
481: ret->transfer_buflen);
482: }
483:
484: return ret;
1.23 djm 485: }
486:
487: u_int
488: sftp_proto_version(struct sftp_conn *conn)
489: {
1.93 djm 490: return conn->version;
1.1 djm 491: }
492:
493: int
1.116 djm 494: do_close(struct sftp_conn *conn, const u_char *handle, u_int handle_len)
1.1 djm 495: {
496: u_int id, status;
1.116 djm 497: struct sshbuf *msg;
498: int r;
1.1 djm 499:
1.116 djm 500: if ((msg = sshbuf_new()) == NULL)
501: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 502:
1.23 djm 503: id = conn->msg_id++;
1.116 djm 504: if ((r = sshbuf_put_u8(msg, SSH2_FXP_CLOSE)) != 0 ||
505: (r = sshbuf_put_u32(msg, id)) != 0 ||
506: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
507: fatal("%s: buffer error: %s", __func__, ssh_err(r));
508: send_msg(conn, msg);
1.33 deraadt 509: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 510:
1.93 djm 511: status = get_status(conn, id);
1.1 djm 512: if (status != SSH2_FX_OK)
513: error("Couldn't close file: %s", fx2txt(status));
514:
1.116 djm 515: sshbuf_free(msg);
1.1 djm 516:
1.116 djm 517: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 518: }
519:
1.12 djm 520:
1.17 itojun 521: static int
1.116 djm 522: do_lsreaddir(struct sftp_conn *conn, const char *path, int print_flag,
1.12 djm 523: SFTP_DIRENT ***dir)
1.1 djm 524: {
1.116 djm 525: struct sshbuf *msg;
526: u_int count, id, i, expected_id, ents = 0;
527: size_t handle_len;
1.123 djm 528: u_char type, *handle;
1.111 djm 529: int status = SSH2_FX_FAILURE;
1.116 djm 530: int r;
1.111 djm 531:
532: if (dir)
533: *dir = NULL;
1.1 djm 534:
1.23 djm 535: id = conn->msg_id++;
1.1 djm 536:
1.116 djm 537: if ((msg = sshbuf_new()) == NULL)
538: fatal("%s: sshbuf_new failed", __func__);
539: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPENDIR)) != 0 ||
540: (r = sshbuf_put_u32(msg, id)) != 0 ||
541: (r = sshbuf_put_cstring(msg, path)) != 0)
542: fatal("%s: buffer error: %s", __func__, ssh_err(r));
543: send_msg(conn, msg);
1.1 djm 544:
1.93 djm 545: handle = get_handle(conn, id, &handle_len,
1.88 djm 546: "remote readdir(\"%s\")", path);
1.96 markus 547: if (handle == NULL) {
1.116 djm 548: sshbuf_free(msg);
1.93 djm 549: return -1;
1.96 markus 550: }
1.1 djm 551:
1.12 djm 552: if (dir) {
553: ents = 0;
1.108 djm 554: *dir = xcalloc(1, sizeof(**dir));
1.12 djm 555: (*dir)[0] = NULL;
556: }
557:
1.49 djm 558: for (; !interrupted;) {
1.23 djm 559: id = expected_id = conn->msg_id++;
1.1 djm 560:
1.33 deraadt 561: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 562:
1.116 djm 563: sshbuf_reset(msg);
564: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READDIR)) != 0 ||
565: (r = sshbuf_put_u32(msg, id)) != 0 ||
566: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
567: fatal("%s: buffer error: %s", __func__, ssh_err(r));
568: send_msg(conn, msg);
569:
570: sshbuf_reset(msg);
571:
572: get_msg(conn, msg);
573:
574: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
575: (r = sshbuf_get_u32(msg, &id)) != 0)
576: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 577:
1.33 deraadt 578: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 579:
580: if (id != expected_id)
1.33 deraadt 581: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 582:
583: if (type == SSH2_FXP_STATUS) {
1.116 djm 584: u_int rstatus;
585:
586: if ((r = sshbuf_get_u32(msg, &rstatus)) != 0)
587: fatal("%s: buffer error: %s",
588: __func__, ssh_err(r));
589: debug3("Received SSH2_FXP_STATUS %d", rstatus);
590: if (rstatus == SSH2_FX_EOF)
1.1 djm 591: break;
1.116 djm 592: error("Couldn't read directory: %s", fx2txt(rstatus));
1.111 djm 593: goto out;
1.1 djm 594: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 595: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 596: SSH2_FXP_NAME, type);
597:
1.116 djm 598: if ((r = sshbuf_get_u32(msg, &count)) != 0)
599: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.126 djm 600: if (count > SSHBUF_SIZE_MAX)
601: fatal("%s: nonsensical number of entries", __func__);
1.7 markus 602: if (count == 0)
603: break;
1.8 stevesk 604: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 605: for (i = 0; i < count; i++) {
1.1 djm 606: char *filename, *longname;
1.116 djm 607: Attrib a;
1.1 djm 608:
1.116 djm 609: if ((r = sshbuf_get_cstring(msg, &filename,
610: NULL)) != 0 ||
611: (r = sshbuf_get_cstring(msg, &longname,
612: NULL)) != 0)
613: fatal("%s: buffer error: %s",
614: __func__, ssh_err(r));
615: if ((r = decode_attrib(msg, &a)) != 0) {
616: error("%s: couldn't decode attrib: %s",
617: __func__, ssh_err(r));
618: free(filename);
619: free(longname);
620: sshbuf_free(msg);
621: return -1;
622: }
1.1 djm 623:
1.105 djm 624: if (print_flag)
1.124 schwarze 625: mprintf("%s\n", longname);
1.12 djm 626:
1.89 djm 627: /*
628: * Directory entries should never contain '/'
629: * These can be used to attack recursive ops
630: * (e.g. send '../../../../etc/passwd')
631: */
632: if (strchr(filename, '/') != NULL) {
633: error("Server sent suspect path \"%s\" "
634: "during readdir of \"%s\"", filename, path);
1.111 djm 635: } else if (dir) {
1.118 deraadt 636: *dir = xreallocarray(*dir, ents + 2, sizeof(**dir));
1.108 djm 637: (*dir)[ents] = xcalloc(1, sizeof(***dir));
1.12 djm 638: (*dir)[ents]->filename = xstrdup(filename);
639: (*dir)[ents]->longname = xstrdup(longname);
1.116 djm 640: memcpy(&(*dir)[ents]->a, &a, sizeof(a));
1.12 djm 641: (*dir)[++ents] = NULL;
642: }
1.98 djm 643: free(filename);
644: free(longname);
1.1 djm 645: }
646: }
1.111 djm 647: status = 0;
1.1 djm 648:
1.111 djm 649: out:
1.116 djm 650: sshbuf_free(msg);
1.23 djm 651: do_close(conn, handle, handle_len);
1.98 djm 652: free(handle);
1.1 djm 653:
1.111 djm 654: if (status != 0 && dir != NULL) {
655: /* Don't return results on error */
656: free_sftp_dirents(*dir);
657: *dir = NULL;
658: } else if (interrupted && dir != NULL && *dir != NULL) {
659: /* Don't return partial matches on interrupt */
1.49 djm 660: free_sftp_dirents(*dir);
1.108 djm 661: *dir = xcalloc(1, sizeof(**dir));
1.49 djm 662: **dir = NULL;
663: }
664:
1.129 djm 665: return status == SSH2_FX_OK ? 0 : -1;
1.12 djm 666: }
667:
668: int
1.116 djm 669: do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir)
1.12 djm 670: {
1.23 djm 671: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 672: }
673:
674: void free_sftp_dirents(SFTP_DIRENT **s)
675: {
676: int i;
1.19 deraadt 677:
1.111 djm 678: if (s == NULL)
679: return;
1.19 deraadt 680: for (i = 0; s[i]; i++) {
1.98 djm 681: free(s[i]->filename);
682: free(s[i]->longname);
683: free(s[i]);
1.12 djm 684: }
1.98 djm 685: free(s);
1.12 djm 686: }
687:
688: int
1.116 djm 689: do_rm(struct sftp_conn *conn, const char *path)
1.1 djm 690: {
691: u_int status, id;
692:
693: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
694:
1.23 djm 695: id = conn->msg_id++;
1.93 djm 696: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
697: status = get_status(conn, id);
1.1 djm 698: if (status != SSH2_FX_OK)
699: error("Couldn't delete file: %s", fx2txt(status));
1.116 djm 700: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 701: }
702:
703: int
1.116 djm 704: do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag)
1.1 djm 705: {
706: u_int status, id;
707:
1.23 djm 708: id = conn->msg_id++;
1.93 djm 709: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 710: strlen(path), a);
711:
1.93 djm 712: status = get_status(conn, id);
1.105 djm 713: if (status != SSH2_FX_OK && print_flag)
1.1 djm 714: error("Couldn't create directory: %s", fx2txt(status));
715:
1.116 djm 716: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 717: }
718:
719: int
1.116 djm 720: do_rmdir(struct sftp_conn *conn, const char *path)
1.1 djm 721: {
722: u_int status, id;
723:
1.23 djm 724: id = conn->msg_id++;
1.93 djm 725: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 726: strlen(path));
1.1 djm 727:
1.93 djm 728: status = get_status(conn, id);
1.1 djm 729: if (status != SSH2_FX_OK)
730: error("Couldn't remove directory: %s", fx2txt(status));
731:
1.116 djm 732: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 733: }
734:
735: Attrib *
1.116 djm 736: do_stat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 737: {
738: u_int id;
739:
1.23 djm 740: id = conn->msg_id++;
741:
1.93 djm 742: send_string_request(conn, id,
1.28 markus 743: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 744: path, strlen(path));
745:
1.93 djm 746: return(get_decode_stat(conn, id, quiet));
1.1 djm 747: }
748:
749: Attrib *
1.116 djm 750: do_lstat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 751: {
752: u_int id;
753:
1.23 djm 754: if (conn->version == 0) {
755: if (quiet)
756: debug("Server version does not support lstat operation");
757: else
1.43 itojun 758: logit("Server version does not support lstat operation");
1.30 markus 759: return(do_stat(conn, path, quiet));
1.23 djm 760: }
761:
762: id = conn->msg_id++;
1.93 djm 763: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 764: strlen(path));
765:
1.93 djm 766: return(get_decode_stat(conn, id, quiet));
1.1 djm 767: }
768:
1.78 chl 769: #ifdef notyet
1.1 djm 770: Attrib *
1.116 djm 771: do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
772: int quiet)
1.1 djm 773: {
774: u_int id;
775:
1.23 djm 776: id = conn->msg_id++;
1.93 djm 777: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 778: handle_len);
779:
1.93 djm 780: return(get_decode_stat(conn, id, quiet));
1.1 djm 781: }
1.78 chl 782: #endif
1.1 djm 783:
784: int
1.116 djm 785: do_setstat(struct sftp_conn *conn, const char *path, Attrib *a)
1.1 djm 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_SETSTAT, path,
1.1 djm 791: strlen(path), a);
792:
1.93 djm 793: status = get_status(conn, id);
1.1 djm 794: if (status != SSH2_FX_OK)
795: error("Couldn't setstat on \"%s\": %s", path,
796: fx2txt(status));
797:
1.116 djm 798: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 799: }
800:
801: int
1.116 djm 802: do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.1 djm 803: Attrib *a)
804: {
805: u_int status, id;
806:
1.23 djm 807: id = conn->msg_id++;
1.93 djm 808: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 809: handle_len, a);
810:
1.93 djm 811: status = get_status(conn, id);
1.1 djm 812: if (status != SSH2_FX_OK)
813: error("Couldn't fsetstat: %s", fx2txt(status));
814:
1.116 djm 815: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 816: }
817:
818: char *
1.116 djm 819: do_realpath(struct sftp_conn *conn, const char *path)
1.1 djm 820: {
1.116 djm 821: struct sshbuf *msg;
822: u_int expected_id, count, id;
1.1 djm 823: char *filename, *longname;
1.116 djm 824: Attrib a;
825: u_char type;
826: int r;
1.1 djm 827:
1.23 djm 828: expected_id = id = conn->msg_id++;
1.93 djm 829: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 830: strlen(path));
1.1 djm 831:
1.116 djm 832: if ((msg = sshbuf_new()) == NULL)
833: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 834:
1.116 djm 835: get_msg(conn, msg);
836: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
837: (r = sshbuf_get_u32(msg, &id)) != 0)
838: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 839:
840: if (id != expected_id)
1.33 deraadt 841: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 842:
843: if (type == SSH2_FXP_STATUS) {
1.116 djm 844: u_int status;
1.1 djm 845:
1.116 djm 846: if ((r = sshbuf_get_u32(msg, &status)) != 0)
847: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.107 djm 848: error("Couldn't canonicalize: %s", fx2txt(status));
1.116 djm 849: sshbuf_free(msg);
1.91 djm 850: return NULL;
1.1 djm 851: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 852: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 853: SSH2_FXP_NAME, type);
854:
1.116 djm 855: if ((r = sshbuf_get_u32(msg, &count)) != 0)
856: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 857: if (count != 1)
858: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
859:
1.116 djm 860: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
861: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
862: (r = decode_attrib(msg, &a)) != 0)
863: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 864:
1.97 dtucker 865: debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
1.116 djm 866: (unsigned long)a.size);
1.1 djm 867:
1.98 djm 868: free(longname);
1.1 djm 869:
1.116 djm 870: sshbuf_free(msg);
1.1 djm 871:
872: return(filename);
873: }
874:
875: int
1.116 djm 876: do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath,
1.102 djm 877: int force_legacy)
1.1 djm 878: {
1.116 djm 879: struct sshbuf *msg;
1.1 djm 880: u_int status, id;
1.116 djm 881: int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
1.1 djm 882:
1.116 djm 883: if ((msg = sshbuf_new()) == NULL)
884: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 885:
886: /* Send rename request */
1.23 djm 887: id = conn->msg_id++;
1.102 djm 888: if (use_ext) {
1.116 djm 889: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
890: (r = sshbuf_put_u32(msg, id)) != 0 ||
891: (r = sshbuf_put_cstring(msg,
892: "posix-rename@openssh.com")) != 0)
893: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.81 djm 894: } else {
1.116 djm 895: if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 ||
896: (r = sshbuf_put_u32(msg, id)) != 0)
897: fatal("%s: buffer error: %s", __func__, ssh_err(r));
898: }
899: if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
900: (r = sshbuf_put_cstring(msg, newpath)) != 0)
901: fatal("%s: buffer error: %s", __func__, ssh_err(r));
902: send_msg(conn, msg);
1.81 djm 903: debug3("Sent message %s \"%s\" -> \"%s\"",
1.116 djm 904: use_ext ? "posix-rename@openssh.com" :
905: "SSH2_FXP_RENAME", oldpath, newpath);
906: sshbuf_free(msg);
1.1 djm 907:
1.93 djm 908: status = get_status(conn, id);
1.1 djm 909: if (status != SSH2_FX_OK)
1.23 djm 910: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 911: newpath, fx2txt(status));
912:
1.116 djm 913: return status == SSH2_FX_OK ? 0 : -1;
1.94 djm 914: }
915:
916: int
1.116 djm 917: do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.94 djm 918: {
1.116 djm 919: struct sshbuf *msg;
1.94 djm 920: u_int status, id;
1.116 djm 921: int r;
1.94 djm 922:
923: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
924: error("Server does not support hardlink@openssh.com extension");
925: return -1;
926: }
927:
1.116 djm 928: if ((msg = sshbuf_new()) == NULL)
929: fatal("%s: sshbuf_new failed", __func__);
1.95 markus 930:
931: /* Send link request */
932: id = conn->msg_id++;
1.116 djm 933: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
934: (r = sshbuf_put_u32(msg, id)) != 0 ||
935: (r = sshbuf_put_cstring(msg, "hardlink@openssh.com")) != 0 ||
936: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
937: (r = sshbuf_put_cstring(msg, newpath)) != 0)
938: fatal("%s: buffer error: %s", __func__, ssh_err(r));
939: send_msg(conn, msg);
1.94 djm 940: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
941: oldpath, newpath);
1.116 djm 942: sshbuf_free(msg);
1.94 djm 943:
944: status = get_status(conn, id);
945: if (status != SSH2_FX_OK)
946: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 947: newpath, fx2txt(status));
1.1 djm 948:
1.116 djm 949: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 950: }
951:
952: int
1.116 djm 953: do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.11 djm 954: {
1.116 djm 955: struct sshbuf *msg;
1.11 djm 956: u_int status, id;
1.116 djm 957: int r;
1.11 djm 958:
1.23 djm 959: if (conn->version < 3) {
960: error("This server does not support the symlink operation");
961: return(SSH2_FX_OP_UNSUPPORTED);
962: }
963:
1.116 djm 964: if ((msg = sshbuf_new()) == NULL)
965: fatal("%s: sshbuf_new failed", __func__);
1.11 djm 966:
1.48 djm 967: /* Send symlink request */
1.23 djm 968: id = conn->msg_id++;
1.116 djm 969: if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 ||
970: (r = sshbuf_put_u32(msg, id)) != 0 ||
971: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
972: (r = sshbuf_put_cstring(msg, newpath)) != 0)
973: fatal("%s: buffer error: %s", __func__, ssh_err(r));
974: send_msg(conn, msg);
1.11 djm 975: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
976: newpath);
1.116 djm 977: sshbuf_free(msg);
1.11 djm 978:
1.93 djm 979: status = get_status(conn, id);
1.11 djm 980: if (status != SSH2_FX_OK)
1.36 markus 981: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 982: newpath, fx2txt(status));
1.11 djm 983:
1.116 djm 984: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 985: }
986:
1.107 djm 987: int
1.116 djm 988: do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len)
1.107 djm 989: {
1.116 djm 990: struct sshbuf *msg;
1.107 djm 991: u_int status, id;
1.116 djm 992: int r;
1.107 djm 993:
994: /* Silently return if the extension is not supported */
995: if ((conn->exts & SFTP_EXT_FSYNC) == 0)
996: return -1;
997:
998: /* Send fsync request */
1.116 djm 999: if ((msg = sshbuf_new()) == NULL)
1000: fatal("%s: sshbuf_new failed", __func__);
1.107 djm 1001: id = conn->msg_id++;
1.116 djm 1002: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1003: (r = sshbuf_put_u32(msg, id)) != 0 ||
1004: (r = sshbuf_put_cstring(msg, "fsync@openssh.com")) != 0 ||
1005: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1006: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1007: send_msg(conn, msg);
1.107 djm 1008: debug3("Sent message fsync@openssh.com I:%u", id);
1.116 djm 1009: sshbuf_free(msg);
1.107 djm 1010:
1011: status = get_status(conn, id);
1012: if (status != SSH2_FX_OK)
1013: error("Couldn't sync file: %s", fx2txt(status));
1014:
1.129 djm 1015: return status == SSH2_FX_OK ? 0 : -1;
1.107 djm 1016: }
1017:
1.78 chl 1018: #ifdef notyet
1.11 djm 1019: char *
1.116 djm 1020: do_readlink(struct sftp_conn *conn, const char *path)
1.11 djm 1021: {
1.116 djm 1022: struct sshbuf *msg;
1023: u_int expected_id, count, id;
1.11 djm 1024: char *filename, *longname;
1.116 djm 1025: Attrib a;
1026: u_char type;
1027: int r;
1.11 djm 1028:
1.23 djm 1029: expected_id = id = conn->msg_id++;
1.93 djm 1030: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 1031:
1.116 djm 1032: if ((msg = sshbuf_new()) == NULL)
1033: fatal("%s: sshbuf_new failed", __func__);
1.11 djm 1034:
1.116 djm 1035: get_msg(conn, msg);
1036: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1037: (r = sshbuf_get_u32(msg, &id)) != 0)
1038: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1039:
1040: if (id != expected_id)
1.33 deraadt 1041: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 1042:
1043: if (type == SSH2_FXP_STATUS) {
1.116 djm 1044: u_int status;
1.11 djm 1045:
1.116 djm 1046: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1047: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1048: error("Couldn't readlink: %s", fx2txt(status));
1.116 djm 1049: sshbuf_free(msg);
1.11 djm 1050: return(NULL);
1051: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 1052: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 1053: SSH2_FXP_NAME, type);
1054:
1.116 djm 1055: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1056: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1057: if (count != 1)
1058: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
1059:
1.116 djm 1060: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
1061: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
1062: (r = decode_attrib(msg, &a)) != 0)
1063: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1064:
1065: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
1066:
1.98 djm 1067: free(longname);
1.11 djm 1068:
1.116 djm 1069: sshbuf_free(msg);
1.11 djm 1070:
1.116 djm 1071: return filename;
1.82 djm 1072: }
1073: #endif
1074:
1075: int
1.84 dtucker 1076: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 1077: int quiet)
1078: {
1.116 djm 1079: struct sshbuf *msg;
1.82 djm 1080: u_int id;
1.116 djm 1081: int r;
1.82 djm 1082:
1083: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
1084: error("Server does not support statvfs@openssh.com extension");
1085: return -1;
1086: }
1087:
1088: id = conn->msg_id++;
1089:
1.116 djm 1090: if ((msg = sshbuf_new()) == NULL)
1091: fatal("%s: sshbuf_new failed", __func__);
1092: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1093: (r = sshbuf_put_u32(msg, id)) != 0 ||
1094: (r = sshbuf_put_cstring(msg, "statvfs@openssh.com")) != 0 ||
1095: (r = sshbuf_put_cstring(msg, path)) != 0)
1096: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1097: send_msg(conn, msg);
1098: sshbuf_free(msg);
1.82 djm 1099:
1.93 djm 1100: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 1101: }
1102:
1103: #ifdef notyet
1104: int
1.116 djm 1105: do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.84 dtucker 1106: struct sftp_statvfs *st, int quiet)
1.82 djm 1107: {
1.116 djm 1108: struct sshbuf *msg;
1.82 djm 1109: u_int id;
1110:
1111: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
1112: error("Server does not support fstatvfs@openssh.com extension");
1113: return -1;
1114: }
1115:
1116: id = conn->msg_id++;
1117:
1.116 djm 1118: if ((msg = sshbuf_new()) == NULL)
1119: fatal("%s: sshbuf_new failed", __func__);
1120: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1121: (r = sshbuf_put_u32(msg, id)) != 0 ||
1122: (r = sshbuf_put_cstring(msg, "fstatvfs@openssh.com")) != 0 ||
1123: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1124: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1125: send_msg(conn, msg);
1126: sshbuf_free(msg);
1.82 djm 1127:
1.93 djm 1128: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 1129: }
1.78 chl 1130: #endif
1.1 djm 1131:
1.131 djm 1132: int
1133: do_lsetstat(struct sftp_conn *conn, const char *path, Attrib *a)
1134: {
1135: struct sshbuf *msg;
1136: u_int status, id;
1137: int r;
1138:
1139: if ((conn->exts & SFTP_EXT_LSETSTAT) == 0) {
1140: error("Server does not support lsetstat@openssh.com extension");
1141: return -1;
1142: }
1143:
1144: id = conn->msg_id++;
1145: if ((msg = sshbuf_new()) == NULL)
1146: fatal("%s: sshbuf_new failed", __func__);
1147: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1148: (r = sshbuf_put_u32(msg, id)) != 0 ||
1149: (r = sshbuf_put_cstring(msg, "lsetstat@openssh.com")) != 0 ||
1150: (r = sshbuf_put_cstring(msg, path)) != 0 ||
1151: (r = encode_attrib(msg, a)) != 0)
1152: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1153: send_msg(conn, msg);
1154: sshbuf_free(msg);
1155:
1156: status = get_status(conn, id);
1157: if (status != SSH2_FX_OK)
1158: error("Couldn't setstat on \"%s\": %s", path,
1159: fx2txt(status));
1160:
1161: return status == SSH2_FX_OK ? 0 : -1;
1162: }
1163:
1.21 djm 1164: static void
1.93 djm 1165: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
1.116 djm 1166: u_int len, const u_char *handle, u_int handle_len)
1.21 djm 1167: {
1.116 djm 1168: struct sshbuf *msg;
1169: int r;
1.28 markus 1170:
1.116 djm 1171: if ((msg = sshbuf_new()) == NULL)
1172: fatal("%s: sshbuf_new failed", __func__);
1173: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 ||
1174: (r = sshbuf_put_u32(msg, id)) != 0 ||
1175: (r = sshbuf_put_string(msg, handle, handle_len)) != 0 ||
1176: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1177: (r = sshbuf_put_u32(msg, len)) != 0)
1178: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1179: send_msg(conn, msg);
1180: sshbuf_free(msg);
1.28 markus 1181: }
1.21 djm 1182:
1.1 djm 1183: int
1.116 djm 1184: do_download(struct sftp_conn *conn, const char *remote_path,
1185: const char *local_path, Attrib *a, int preserve_flag, int resume_flag,
1186: int fsync_flag)
1.1 djm 1187: {
1.89 djm 1188: Attrib junk;
1.116 djm 1189: struct sshbuf *msg;
1190: u_char *handle;
1191: int local_fd = -1, write_error;
1.134 ! djm 1192: int read_error, write_errno, lmodified = 0, reordered = 0, r;
1.101 djm 1193: u_int64_t offset = 0, size, highwater;
1.116 djm 1194: u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK;
1.39 fgsch 1195: off_t progress_counter;
1.116 djm 1196: size_t handle_len;
1.101 djm 1197: struct stat st;
1.21 djm 1198: struct request {
1199: u_int id;
1.116 djm 1200: size_t len;
1.21 djm 1201: u_int64_t offset;
1.28 markus 1202: TAILQ_ENTRY(request) tq;
1.21 djm 1203: };
1204: TAILQ_HEAD(reqhead, request) requests;
1205: struct request *req;
1.116 djm 1206: u_char type;
1.21 djm 1207:
1208: TAILQ_INIT(&requests);
1.1 djm 1209:
1.89 djm 1210: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1211: return -1;
1.1 djm 1212:
1.86 djm 1213: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1214: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1215: mode = a->perm & 0777;
1.1 djm 1216: else
1217: mode = 0666;
1218:
1.14 djm 1219: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1220: (!S_ISREG(a->perm))) {
1221: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1222: return(-1);
1223: }
1224:
1.21 djm 1225: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1226: size = a->size;
1227: else
1228: size = 0;
1229:
1.23 djm 1230: buflen = conn->transfer_buflen;
1.116 djm 1231: if ((msg = sshbuf_new()) == NULL)
1232: fatal("%s: sshbuf_new failed", __func__);
1233:
1234: attrib_clear(&junk); /* Send empty attributes */
1.1 djm 1235:
1236: /* Send open request */
1.23 djm 1237: id = conn->msg_id++;
1.116 djm 1238: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1239: (r = sshbuf_put_u32(msg, id)) != 0 ||
1240: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1241: (r = sshbuf_put_u32(msg, SSH2_FXF_READ)) != 0 ||
1242: (r = encode_attrib(msg, &junk)) != 0)
1243: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1244: send_msg(conn, msg);
1.33 deraadt 1245: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1246:
1.93 djm 1247: handle = get_handle(conn, id, &handle_len,
1.88 djm 1248: "remote open(\"%s\")", remote_path);
1.1 djm 1249: if (handle == NULL) {
1.116 djm 1250: sshbuf_free(msg);
1.1 djm 1251: return(-1);
1252: }
1253:
1.105 djm 1254: local_fd = open(local_path,
1255: O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
1.23 djm 1256: if (local_fd == -1) {
1257: error("Couldn't open local file \"%s\" for writing: %s",
1258: local_path, strerror(errno));
1.101 djm 1259: goto fail;
1260: }
1261: offset = highwater = 0;
1.105 djm 1262: if (resume_flag) {
1.101 djm 1263: if (fstat(local_fd, &st) == -1) {
1264: error("Unable to stat local file \"%s\": %s",
1265: local_path, strerror(errno));
1266: goto fail;
1267: }
1.113 djm 1268: if (st.st_size < 0) {
1269: error("\"%s\" has negative size", local_path);
1270: goto fail;
1271: }
1272: if ((u_int64_t)st.st_size > size) {
1.101 djm 1273: error("Unable to resume download of \"%s\": "
1274: "local file is larger than remote", local_path);
1275: fail:
1276: do_close(conn, handle, handle_len);
1.116 djm 1277: sshbuf_free(msg);
1.101 djm 1278: free(handle);
1.110 djm 1279: if (local_fd != -1)
1280: close(local_fd);
1.101 djm 1281: return -1;
1282: }
1283: offset = highwater = st.st_size;
1.23 djm 1284: }
1285:
1.1 djm 1286: /* Read from remote and write to local */
1.101 djm 1287: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1288: max_req = 1;
1.101 djm 1289: progress_counter = offset;
1.39 fgsch 1290:
1.47 djm 1291: if (showprogress && size != 0)
1292: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1293:
1.21 djm 1294: while (num_req > 0 || max_req > 0) {
1.116 djm 1295: u_char *data;
1296: size_t len;
1.1 djm 1297:
1.49 djm 1298: /*
1.51 deraadt 1299: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1300: * allow outstanding requests to drain gracefully
1301: */
1302: if (interrupted) {
1303: if (num_req == 0) /* If we haven't started yet... */
1304: break;
1305: max_req = 0;
1306: }
1307:
1.21 djm 1308: /* Send some more requests */
1309: while (num_req < max_req) {
1.28 markus 1310: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1311: (unsigned long long)offset,
1312: (unsigned long long)offset + buflen - 1,
1313: num_req, max_req);
1.108 djm 1314: req = xcalloc(1, sizeof(*req));
1.23 djm 1315: req->id = conn->msg_id++;
1.21 djm 1316: req->len = buflen;
1317: req->offset = offset;
1318: offset += buflen;
1319: num_req++;
1320: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1321: send_read_request(conn, req->id, req->offset,
1.21 djm 1322: req->len, handle, handle_len);
1323: }
1.1 djm 1324:
1.116 djm 1325: sshbuf_reset(msg);
1326: get_msg(conn, msg);
1327: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1328: (r = sshbuf_get_u32(msg, &id)) != 0)
1329: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.33 deraadt 1330: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1331:
1332: /* Find the request in our queue */
1.53 deraadt 1333: for (req = TAILQ_FIRST(&requests);
1.21 djm 1334: req != NULL && req->id != id;
1335: req = TAILQ_NEXT(req, tq))
1336: ;
1337: if (req == NULL)
1338: fatal("Unexpected reply %u", id);
1339:
1340: switch (type) {
1341: case SSH2_FXP_STATUS:
1.116 djm 1342: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1343: fatal("%s: buffer error: %s",
1344: __func__, ssh_err(r));
1.21 djm 1345: if (status != SSH2_FX_EOF)
1346: read_error = 1;
1347: max_req = 0;
1348: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1349: free(req);
1.21 djm 1350: num_req--;
1351: break;
1352: case SSH2_FXP_DATA:
1.116 djm 1353: if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
1354: fatal("%s: buffer error: %s",
1355: __func__, ssh_err(r));
1.26 itojun 1356: debug3("Received data %llu -> %llu",
1.28 markus 1357: (unsigned long long)req->offset,
1.26 itojun 1358: (unsigned long long)req->offset + len - 1);
1.21 djm 1359: if (len > req->len)
1360: fatal("Received more data than asked for "
1.116 djm 1361: "%zu > %zu", len, req->len);
1.134 ! djm 1362: lmodified = 1;
1.21 djm 1363: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1364: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1365: !write_error) {
1366: write_errno = errno;
1367: write_error = 1;
1368: max_req = 0;
1369: }
1.101 djm 1370: else if (!reordered && req->offset <= highwater)
1371: highwater = req->offset + len;
1372: else if (!reordered && req->offset > highwater)
1373: reordered = 1;
1.39 fgsch 1374: progress_counter += len;
1.98 djm 1375: free(data);
1.1 djm 1376:
1.21 djm 1377: if (len == req->len) {
1378: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1379: free(req);
1.21 djm 1380: num_req--;
1381: } else {
1382: /* Resend the request for the missing data */
1383: debug3("Short data block, re-requesting "
1.26 itojun 1384: "%llu -> %llu (%2d)",
1.28 markus 1385: (unsigned long long)req->offset + len,
1.27 itojun 1386: (unsigned long long)req->offset +
1387: req->len - 1, num_req);
1.23 djm 1388: req->id = conn->msg_id++;
1.21 djm 1389: req->len -= len;
1390: req->offset += len;
1.93 djm 1391: send_read_request(conn, req->id,
1.23 djm 1392: req->offset, req->len, handle, handle_len);
1.21 djm 1393: /* Reduce the request size */
1394: if (len < buflen)
1.125 deraadt 1395: buflen = MAXIMUM(MIN_READ_SIZE, len);
1.21 djm 1396: }
1397: if (max_req > 0) { /* max_req = 0 iff EOF received */
1398: if (size > 0 && offset > size) {
1399: /* Only one request at a time
1400: * after the expected EOF */
1401: debug3("Finish at %llu (%2d)",
1.26 itojun 1402: (unsigned long long)offset,
1403: num_req);
1.21 djm 1404: max_req = 1;
1.49 djm 1405: } else if (max_req <= conn->num_requests) {
1.21 djm 1406: ++max_req;
1407: }
1.1 djm 1408: }
1.21 djm 1409: break;
1410: default:
1.33 deraadt 1411: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1412: SSH2_FXP_DATA, type);
1413: }
1.21 djm 1414: }
1.1 djm 1415:
1.39 fgsch 1416: if (showprogress && size)
1417: stop_progress_meter();
1418:
1.21 djm 1419: /* Sanity check */
1420: if (TAILQ_FIRST(&requests) != NULL)
1421: fatal("Transfer complete, but requests still in queue");
1.101 djm 1422: /* Truncate at highest contiguous point to avoid holes on interrupt */
1423: if (read_error || write_error || interrupted) {
1.105 djm 1424: if (reordered && resume_flag) {
1.101 djm 1425: error("Unable to resume download of \"%s\": "
1426: "server reordered requests", local_path);
1427: }
1428: debug("truncating at %llu", (unsigned long long)highwater);
1.120 djm 1429: if (ftruncate(local_fd, highwater) == -1)
1430: error("ftruncate \"%s\": %s", local_path,
1431: strerror(errno));
1.101 djm 1432: }
1.21 djm 1433: if (read_error) {
1.28 markus 1434: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1435: remote_path, fx2txt(status));
1.103 djm 1436: status = -1;
1.23 djm 1437: do_close(conn, handle, handle_len);
1.21 djm 1438: } else if (write_error) {
1439: error("Couldn't write to \"%s\": %s", local_path,
1440: strerror(write_errno));
1.116 djm 1441: status = SSH2_FX_FAILURE;
1.23 djm 1442: do_close(conn, handle, handle_len);
1.21 djm 1443: } else {
1.116 djm 1444: if (do_close(conn, handle, handle_len) != 0 || interrupted)
1445: status = SSH2_FX_FAILURE;
1446: else
1447: status = SSH2_FX_OK;
1.21 djm 1448: /* Override umask and utimes if asked */
1.105 djm 1449: if (preserve_flag && fchmod(local_fd, mode) == -1)
1.21 djm 1450: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1451: strerror(errno));
1.105 djm 1452: if (preserve_flag &&
1453: (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1.21 djm 1454: struct timeval tv[2];
1455: tv[0].tv_sec = a->atime;
1456: tv[1].tv_sec = a->mtime;
1457: tv[0].tv_usec = tv[1].tv_usec = 0;
1458: if (utimes(local_path, tv) == -1)
1459: error("Can't set times on \"%s\": %s",
1.37 deraadt 1460: local_path, strerror(errno));
1.1 djm 1461: }
1.134 ! djm 1462: if (resume_flag && !lmodified)
! 1463: logit("File \"%s\" was not modified", local_path);
! 1464: else if (fsync_flag) {
1.107 djm 1465: debug("syncing \"%s\"", local_path);
1466: if (fsync(local_fd) == -1)
1467: error("Couldn't sync file \"%s\": %s",
1468: local_path, strerror(errno));
1469: }
1.10 djm 1470: }
1.5 djm 1471: close(local_fd);
1.116 djm 1472: sshbuf_free(msg);
1.98 djm 1473: free(handle);
1.23 djm 1474:
1.129 djm 1475: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1476: }
1477:
1.89 djm 1478: static int
1.116 djm 1479: download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1480: int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
1481: int resume_flag, int fsync_flag)
1.89 djm 1482: {
1483: int i, ret = 0;
1484: SFTP_DIRENT **dir_entries;
1.130 djm 1485: char *filename, *new_src = NULL, *new_dst = NULL;
1.89 djm 1486: mode_t mode = 0777;
1487:
1488: if (depth >= MAX_DIR_DEPTH) {
1489: error("Maximum directory depth exceeded: %d levels", depth);
1490: return -1;
1491: }
1492:
1493: if (dirattrib == NULL &&
1494: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1495: error("Unable to stat remote directory \"%s\"", src);
1496: return -1;
1497: }
1498: if (!S_ISDIR(dirattrib->perm)) {
1499: error("\"%s\" is not a directory", src);
1500: return -1;
1501: }
1.105 djm 1502: if (print_flag)
1.124 schwarze 1503: mprintf("Retrieving %s\n", src);
1.89 djm 1504:
1505: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1506: mode = dirattrib->perm & 01777;
1507: else {
1508: debug("Server did not send permissions for "
1509: "directory \"%s\"", dst);
1510: }
1511:
1512: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1513: error("mkdir %s: %s", dst, strerror(errno));
1514: return -1;
1515: }
1516:
1517: if (do_readdir(conn, src, &dir_entries) == -1) {
1518: error("%s: Failed to get directory contents", src);
1519: return -1;
1520: }
1521:
1522: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1.130 djm 1523: free(new_dst);
1524: free(new_src);
1525:
1.89 djm 1526: filename = dir_entries[i]->filename;
1527: new_dst = path_append(dst, filename);
1528: new_src = path_append(src, filename);
1529:
1530: if (S_ISDIR(dir_entries[i]->a.perm)) {
1531: if (strcmp(filename, ".") == 0 ||
1532: strcmp(filename, "..") == 0)
1533: continue;
1534: if (download_dir_internal(conn, new_src, new_dst,
1.105 djm 1535: depth + 1, &(dir_entries[i]->a), preserve_flag,
1.107 djm 1536: print_flag, resume_flag, fsync_flag) == -1)
1.89 djm 1537: ret = -1;
1538: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1539: if (do_download(conn, new_src, new_dst,
1.107 djm 1540: &(dir_entries[i]->a), preserve_flag,
1541: resume_flag, fsync_flag) == -1) {
1.89 djm 1542: error("Download of file %s to %s failed",
1543: new_src, new_dst);
1544: ret = -1;
1545: }
1546: } else
1547: logit("%s: not a regular file\n", new_src);
1548:
1549: }
1.130 djm 1550: free(new_dst);
1551: free(new_src);
1.89 djm 1552:
1.105 djm 1553: if (preserve_flag) {
1.89 djm 1554: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1555: struct timeval tv[2];
1556: tv[0].tv_sec = dirattrib->atime;
1557: tv[1].tv_sec = dirattrib->mtime;
1558: tv[0].tv_usec = tv[1].tv_usec = 0;
1559: if (utimes(dst, tv) == -1)
1560: error("Can't set times on \"%s\": %s",
1561: dst, strerror(errno));
1562: } else
1563: debug("Server did not send times for directory "
1564: "\"%s\"", dst);
1565: }
1566:
1567: free_sftp_dirents(dir_entries);
1568:
1569: return ret;
1570: }
1571:
1572: int
1.116 djm 1573: download_dir(struct sftp_conn *conn, const char *src, const char *dst,
1574: Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
1575: int fsync_flag)
1.89 djm 1576: {
1577: char *src_canon;
1578: int ret;
1579:
1580: if ((src_canon = do_realpath(conn, src)) == NULL) {
1.107 djm 1581: error("Unable to canonicalize path \"%s\"", src);
1.89 djm 1582: return -1;
1583: }
1584:
1.105 djm 1585: ret = download_dir_internal(conn, src_canon, dst, 0,
1.107 djm 1586: dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag);
1.98 djm 1587: free(src_canon);
1.89 djm 1588: return ret;
1589: }
1590:
1.1 djm 1591: int
1.116 djm 1592: do_upload(struct sftp_conn *conn, const char *local_path,
1593: const char *remote_path, int preserve_flag, int resume, int fsync_flag)
1.1 djm 1594: {
1.116 djm 1595: int r, local_fd;
1596: u_int status = SSH2_FX_OK;
1597: u_int id;
1598: u_char type;
1.100 dtucker 1599: off_t offset, progress_counter;
1.116 djm 1600: u_char *handle, *data;
1601: struct sshbuf *msg;
1.1 djm 1602: struct stat sb;
1.115 logan 1603: Attrib a, *c = NULL;
1.21 djm 1604: u_int32_t startid;
1605: u_int32_t ackid;
1.22 djm 1606: struct outstanding_ack {
1607: u_int id;
1608: u_int len;
1.77 djm 1609: off_t offset;
1.28 markus 1610: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1611: };
1612: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1613: struct outstanding_ack *ack = NULL;
1.116 djm 1614: size_t handle_len;
1.22 djm 1615:
1616: TAILQ_INIT(&acks);
1.1 djm 1617:
1618: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1619: error("Couldn't open local file \"%s\" for reading: %s",
1620: local_path, strerror(errno));
1621: return(-1);
1622: }
1623: if (fstat(local_fd, &sb) == -1) {
1624: error("Couldn't fstat local file \"%s\": %s",
1625: local_path, strerror(errno));
1.41 djm 1626: close(local_fd);
1627: return(-1);
1628: }
1629: if (!S_ISREG(sb.st_mode)) {
1630: error("%s is not a regular file", local_path);
1.1 djm 1631: close(local_fd);
1632: return(-1);
1633: }
1634: stat_to_attrib(&sb, &a);
1635:
1636: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1637: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1638: a.perm &= 0777;
1.105 djm 1639: if (!preserve_flag)
1.1 djm 1640: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1641:
1.115 logan 1642: if (resume) {
1643: /* Get remote file size if it exists */
1644: if ((c = do_stat(conn, remote_path, 0)) == NULL) {
1.122 djm 1645: close(local_fd);
1.115 logan 1646: return -1;
1647: }
1648:
1649: if ((off_t)c->size >= sb.st_size) {
1650: error("destination file bigger or same size as "
1651: "source file");
1652: close(local_fd);
1653: return -1;
1654: }
1655:
1656: if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
1657: close(local_fd);
1658: return -1;
1659: }
1660: }
1661:
1.116 djm 1662: if ((msg = sshbuf_new()) == NULL)
1663: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 1664:
1665: /* Send open request */
1.23 djm 1666: id = conn->msg_id++;
1.116 djm 1667: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1668: (r = sshbuf_put_u32(msg, id)) != 0 ||
1669: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1670: (r = sshbuf_put_u32(msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|
1671: (resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC))) != 0 ||
1672: (r = encode_attrib(msg, &a)) != 0)
1673: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1674: send_msg(conn, msg);
1.33 deraadt 1675: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1676:
1.116 djm 1677: sshbuf_reset(msg);
1.1 djm 1678:
1.93 djm 1679: handle = get_handle(conn, id, &handle_len,
1.88 djm 1680: "remote open(\"%s\")", remote_path);
1.1 djm 1681: if (handle == NULL) {
1682: close(local_fd);
1.116 djm 1683: sshbuf_free(msg);
1.80 djm 1684: return -1;
1.1 djm 1685: }
1686:
1.21 djm 1687: startid = ackid = id + 1;
1.23 djm 1688: data = xmalloc(conn->transfer_buflen);
1.20 djm 1689:
1.1 djm 1690: /* Read from local and write to remote */
1.115 logan 1691: offset = progress_counter = (resume ? c->size : 0);
1.39 fgsch 1692: if (showprogress)
1.100 dtucker 1693: start_progress_meter(local_path, sb.st_size,
1694: &progress_counter);
1.39 fgsch 1695:
1.19 deraadt 1696: for (;;) {
1.1 djm 1697: int len;
1698:
1699: /*
1.51 deraadt 1700: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1701: * thus losing the last block of the file.
1.51 deraadt 1702: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1703: * server to drain.
1.1 djm 1704: */
1.80 djm 1705: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1706: len = 0;
1707: else do
1.23 djm 1708: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1709: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1710:
1711: if (len == -1)
1712: fatal("Couldn't read from \"%s\": %s", local_path,
1713: strerror(errno));
1.21 djm 1714:
1715: if (len != 0) {
1.108 djm 1716: ack = xcalloc(1, sizeof(*ack));
1.22 djm 1717: ack->id = ++id;
1718: ack->offset = offset;
1719: ack->len = len;
1720: TAILQ_INSERT_TAIL(&acks, ack, tq);
1721:
1.116 djm 1722: sshbuf_reset(msg);
1723: if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
1724: (r = sshbuf_put_u32(msg, ack->id)) != 0 ||
1725: (r = sshbuf_put_string(msg, handle,
1726: handle_len)) != 0 ||
1727: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1728: (r = sshbuf_put_string(msg, data, len)) != 0)
1729: fatal("%s: buffer error: %s",
1730: __func__, ssh_err(r));
1731: send_msg(conn, msg);
1.33 deraadt 1732: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1733: id, (unsigned long long)offset, len);
1.22 djm 1734: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1735: break;
1736:
1.22 djm 1737: if (ack == NULL)
1738: fatal("Unexpected ACK %u", id);
1739:
1.28 markus 1740: if (id == startid || len == 0 ||
1.23 djm 1741: id - ackid >= conn->num_requests) {
1.116 djm 1742: u_int rid;
1.31 djm 1743:
1.116 djm 1744: sshbuf_reset(msg);
1745: get_msg(conn, msg);
1746: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1747: (r = sshbuf_get_u32(msg, &rid)) != 0)
1748: fatal("%s: buffer error: %s",
1749: __func__, ssh_err(r));
1.22 djm 1750:
1751: if (type != SSH2_FXP_STATUS)
1752: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1753: "got %d", SSH2_FXP_STATUS, type);
1754:
1.116 djm 1755: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1756: fatal("%s: buffer error: %s",
1757: __func__, ssh_err(r));
1758: debug3("SSH2_FXP_STATUS %u", status);
1.22 djm 1759:
1760: /* Find the request in our queue */
1.53 deraadt 1761: for (ack = TAILQ_FIRST(&acks);
1.116 djm 1762: ack != NULL && ack->id != rid;
1.22 djm 1763: ack = TAILQ_NEXT(ack, tq))
1764: ;
1765: if (ack == NULL)
1.116 djm 1766: fatal("Can't find request for ID %u", rid);
1.22 djm 1767: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1768: debug3("In write loop, ack for %u %u bytes at %lld",
1769: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1770: ++ackid;
1.100 dtucker 1771: progress_counter += ack->len;
1.98 djm 1772: free(ack);
1.1 djm 1773: }
1774: offset += len;
1.77 djm 1775: if (offset < 0)
1776: fatal("%s: offset < 0", __func__);
1.1 djm 1777: }
1.116 djm 1778: sshbuf_free(msg);
1.80 djm 1779:
1.39 fgsch 1780: if (showprogress)
1781: stop_progress_meter();
1.98 djm 1782: free(data);
1.1 djm 1783:
1.80 djm 1784: if (status != SSH2_FX_OK) {
1785: error("Couldn't write to remote file \"%s\": %s",
1786: remote_path, fx2txt(status));
1.116 djm 1787: status = SSH2_FX_FAILURE;
1.80 djm 1788: }
1789:
1.1 djm 1790: if (close(local_fd) == -1) {
1791: error("Couldn't close local file \"%s\": %s", local_path,
1792: strerror(errno));
1.116 djm 1793: status = SSH2_FX_FAILURE;
1.1 djm 1794: }
1795:
1.10 djm 1796: /* Override umask and utimes if asked */
1.105 djm 1797: if (preserve_flag)
1.23 djm 1798: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1799:
1.107 djm 1800: if (fsync_flag)
1801: (void)do_fsync(conn, handle, handle_len);
1802:
1.121 djm 1803: if (do_close(conn, handle, handle_len) != 0)
1.116 djm 1804: status = SSH2_FX_FAILURE;
1805:
1.98 djm 1806: free(handle);
1.5 djm 1807:
1.116 djm 1808: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1809: }
1.89 djm 1810:
1811: static int
1.116 djm 1812: upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1813: int depth, int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1814: {
1.116 djm 1815: int ret = 0;
1.89 djm 1816: DIR *dirp;
1817: struct dirent *dp;
1.130 djm 1818: char *filename, *new_src = NULL, *new_dst = NULL;
1.89 djm 1819: struct stat sb;
1.121 djm 1820: Attrib a, *dirattrib;
1.89 djm 1821:
1822: if (depth >= MAX_DIR_DEPTH) {
1823: error("Maximum directory depth exceeded: %d levels", depth);
1824: return -1;
1825: }
1826:
1827: if (stat(src, &sb) == -1) {
1828: error("Couldn't stat directory \"%s\": %s",
1829: src, strerror(errno));
1830: return -1;
1831: }
1832: if (!S_ISDIR(sb.st_mode)) {
1833: error("\"%s\" is not a directory", src);
1834: return -1;
1835: }
1.105 djm 1836: if (print_flag)
1.124 schwarze 1837: mprintf("Entering %s\n", src);
1.89 djm 1838:
1839: attrib_clear(&a);
1840: stat_to_attrib(&sb, &a);
1841: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1842: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1843: a.perm &= 01777;
1.105 djm 1844: if (!preserve_flag)
1.89 djm 1845: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 1846:
1.89 djm 1847: /*
1.121 djm 1848: * sftp lacks a portable status value to match errno EEXIST,
1849: * so if we get a failure back then we must check whether
1850: * the path already existed and is a directory.
1.89 djm 1851: */
1.121 djm 1852: if (do_mkdir(conn, dst, &a, 0) != 0) {
1853: if ((dirattrib = do_stat(conn, dst, 0)) == NULL)
1.89 djm 1854: return -1;
1.121 djm 1855: if (!S_ISDIR(dirattrib->perm)) {
1856: error("\"%s\" exists but is not a directory", dst);
1.89 djm 1857: return -1;
1.121 djm 1858: }
1.89 djm 1859: }
1860:
1861: if ((dirp = opendir(src)) == NULL) {
1862: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1863: return -1;
1864: }
1.101 djm 1865:
1.89 djm 1866: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1867: if (dp->d_ino == 0)
1868: continue;
1.130 djm 1869: free(new_dst);
1870: free(new_src);
1.89 djm 1871: filename = dp->d_name;
1872: new_dst = path_append(dst, filename);
1873: new_src = path_append(src, filename);
1874:
1.90 dtucker 1875: if (lstat(new_src, &sb) == -1) {
1876: logit("%s: lstat failed: %s", filename,
1877: strerror(errno));
1878: ret = -1;
1879: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1880: if (strcmp(filename, ".") == 0 ||
1881: strcmp(filename, "..") == 0)
1882: continue;
1883:
1884: if (upload_dir_internal(conn, new_src, new_dst,
1.115 logan 1885: depth + 1, preserve_flag, print_flag, resume,
1.107 djm 1886: fsync_flag) == -1)
1.89 djm 1887: ret = -1;
1.90 dtucker 1888: } else if (S_ISREG(sb.st_mode)) {
1.105 djm 1889: if (do_upload(conn, new_src, new_dst,
1.115 logan 1890: preserve_flag, resume, fsync_flag) == -1) {
1.89 djm 1891: error("Uploading of file %s to %s failed!",
1892: new_src, new_dst);
1893: ret = -1;
1894: }
1895: } else
1896: logit("%s: not a regular file\n", filename);
1897: }
1.130 djm 1898: free(new_dst);
1899: free(new_src);
1.89 djm 1900:
1901: do_setstat(conn, dst, &a);
1902:
1903: (void) closedir(dirp);
1904: return ret;
1905: }
1906:
1907: int
1.116 djm 1908: upload_dir(struct sftp_conn *conn, const char *src, const char *dst,
1909: int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1910: {
1911: char *dst_canon;
1912: int ret;
1913:
1914: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1.107 djm 1915: error("Unable to canonicalize path \"%s\"", dst);
1.89 djm 1916: return -1;
1917: }
1918:
1.106 djm 1919: ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
1.115 logan 1920: print_flag, resume, fsync_flag);
1.107 djm 1921:
1.98 djm 1922: free(dst_canon);
1.89 djm 1923: return ret;
1924: }
1925:
1926: char *
1.116 djm 1927: path_append(const char *p1, const char *p2)
1.89 djm 1928: {
1929: char *ret;
1930: size_t len = strlen(p1) + strlen(p2) + 2;
1931:
1932: ret = xmalloc(len);
1933: strlcpy(ret, p1, len);
1934: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1935: strlcat(ret, "/", len);
1936: strlcat(ret, p2, len);
1937:
1938: return(ret);
1939: }
1940:
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