Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.135
1.135 ! djm 1: /* $OpenBSD: sftp-client.c,v 1.134 2019/07/12 03:56:21 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:
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);
1.135 ! djm 620: goto out;
1.116 djm 621: }
1.1 djm 622:
1.105 djm 623: if (print_flag)
1.124 schwarze 624: mprintf("%s\n", longname);
1.12 djm 625:
1.89 djm 626: /*
627: * Directory entries should never contain '/'
628: * These can be used to attack recursive ops
629: * (e.g. send '../../../../etc/passwd')
630: */
631: if (strchr(filename, '/') != NULL) {
632: error("Server sent suspect path \"%s\" "
633: "during readdir of \"%s\"", filename, path);
1.111 djm 634: } else if (dir) {
1.118 deraadt 635: *dir = xreallocarray(*dir, ents + 2, sizeof(**dir));
1.108 djm 636: (*dir)[ents] = xcalloc(1, sizeof(***dir));
1.12 djm 637: (*dir)[ents]->filename = xstrdup(filename);
638: (*dir)[ents]->longname = xstrdup(longname);
1.116 djm 639: memcpy(&(*dir)[ents]->a, &a, sizeof(a));
1.12 djm 640: (*dir)[++ents] = NULL;
641: }
1.98 djm 642: free(filename);
643: free(longname);
1.1 djm 644: }
645: }
1.111 djm 646: status = 0;
1.1 djm 647:
1.111 djm 648: out:
1.116 djm 649: sshbuf_free(msg);
1.23 djm 650: do_close(conn, handle, handle_len);
1.98 djm 651: free(handle);
1.1 djm 652:
1.111 djm 653: if (status != 0 && dir != NULL) {
654: /* Don't return results on error */
655: free_sftp_dirents(*dir);
656: *dir = NULL;
657: } else if (interrupted && dir != NULL && *dir != NULL) {
658: /* Don't return partial matches on interrupt */
1.49 djm 659: free_sftp_dirents(*dir);
1.108 djm 660: *dir = xcalloc(1, sizeof(**dir));
1.49 djm 661: **dir = NULL;
662: }
663:
1.129 djm 664: return status == SSH2_FX_OK ? 0 : -1;
1.12 djm 665: }
666:
667: int
1.116 djm 668: do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir)
1.12 djm 669: {
1.23 djm 670: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 671: }
672:
673: void free_sftp_dirents(SFTP_DIRENT **s)
674: {
675: int i;
1.19 deraadt 676:
1.111 djm 677: if (s == NULL)
678: return;
1.19 deraadt 679: for (i = 0; s[i]; i++) {
1.98 djm 680: free(s[i]->filename);
681: free(s[i]->longname);
682: free(s[i]);
1.12 djm 683: }
1.98 djm 684: free(s);
1.12 djm 685: }
686:
687: int
1.116 djm 688: do_rm(struct sftp_conn *conn, const char *path)
1.1 djm 689: {
690: u_int status, id;
691:
692: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
693:
1.23 djm 694: id = conn->msg_id++;
1.93 djm 695: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
696: status = get_status(conn, id);
1.1 djm 697: if (status != SSH2_FX_OK)
698: error("Couldn't delete file: %s", fx2txt(status));
1.116 djm 699: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 700: }
701:
702: int
1.116 djm 703: do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag)
1.1 djm 704: {
705: u_int status, id;
706:
1.23 djm 707: id = conn->msg_id++;
1.93 djm 708: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 709: strlen(path), a);
710:
1.93 djm 711: status = get_status(conn, id);
1.105 djm 712: if (status != SSH2_FX_OK && print_flag)
1.1 djm 713: error("Couldn't create directory: %s", fx2txt(status));
714:
1.116 djm 715: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 716: }
717:
718: int
1.116 djm 719: do_rmdir(struct sftp_conn *conn, const char *path)
1.1 djm 720: {
721: u_int status, id;
722:
1.23 djm 723: id = conn->msg_id++;
1.93 djm 724: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 725: strlen(path));
1.1 djm 726:
1.93 djm 727: status = get_status(conn, id);
1.1 djm 728: if (status != SSH2_FX_OK)
729: error("Couldn't remove directory: %s", fx2txt(status));
730:
1.116 djm 731: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 732: }
733:
734: Attrib *
1.116 djm 735: do_stat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 736: {
737: u_int id;
738:
1.23 djm 739: id = conn->msg_id++;
740:
1.93 djm 741: send_string_request(conn, id,
1.28 markus 742: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 743: path, strlen(path));
744:
1.93 djm 745: return(get_decode_stat(conn, id, quiet));
1.1 djm 746: }
747:
748: Attrib *
1.116 djm 749: do_lstat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 750: {
751: u_int id;
752:
1.23 djm 753: if (conn->version == 0) {
754: if (quiet)
755: debug("Server version does not support lstat operation");
756: else
1.43 itojun 757: logit("Server version does not support lstat operation");
1.30 markus 758: return(do_stat(conn, path, quiet));
1.23 djm 759: }
760:
761: id = conn->msg_id++;
1.93 djm 762: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 763: strlen(path));
764:
1.93 djm 765: return(get_decode_stat(conn, id, quiet));
1.1 djm 766: }
767:
1.78 chl 768: #ifdef notyet
1.1 djm 769: Attrib *
1.116 djm 770: do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
771: int quiet)
1.1 djm 772: {
773: u_int id;
774:
1.23 djm 775: id = conn->msg_id++;
1.93 djm 776: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 777: handle_len);
778:
1.93 djm 779: return(get_decode_stat(conn, id, quiet));
1.1 djm 780: }
1.78 chl 781: #endif
1.1 djm 782:
783: int
1.116 djm 784: do_setstat(struct sftp_conn *conn, const char *path, Attrib *a)
1.1 djm 785: {
786: u_int status, id;
787:
1.23 djm 788: id = conn->msg_id++;
1.93 djm 789: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 790: strlen(path), a);
791:
1.93 djm 792: status = get_status(conn, id);
1.1 djm 793: if (status != SSH2_FX_OK)
794: error("Couldn't setstat on \"%s\": %s", path,
795: fx2txt(status));
796:
1.116 djm 797: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 798: }
799:
800: int
1.116 djm 801: do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.1 djm 802: Attrib *a)
803: {
804: u_int status, id;
805:
1.23 djm 806: id = conn->msg_id++;
1.93 djm 807: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 808: handle_len, a);
809:
1.93 djm 810: status = get_status(conn, id);
1.1 djm 811: if (status != SSH2_FX_OK)
812: error("Couldn't fsetstat: %s", fx2txt(status));
813:
1.116 djm 814: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 815: }
816:
817: char *
1.116 djm 818: do_realpath(struct sftp_conn *conn, const char *path)
1.1 djm 819: {
1.116 djm 820: struct sshbuf *msg;
821: u_int expected_id, count, id;
1.1 djm 822: char *filename, *longname;
1.116 djm 823: Attrib a;
824: u_char type;
825: int r;
1.1 djm 826:
1.23 djm 827: expected_id = id = conn->msg_id++;
1.93 djm 828: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 829: strlen(path));
1.1 djm 830:
1.116 djm 831: if ((msg = sshbuf_new()) == NULL)
832: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 833:
1.116 djm 834: get_msg(conn, msg);
835: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
836: (r = sshbuf_get_u32(msg, &id)) != 0)
837: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 838:
839: if (id != expected_id)
1.33 deraadt 840: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 841:
842: if (type == SSH2_FXP_STATUS) {
1.116 djm 843: u_int status;
1.1 djm 844:
1.116 djm 845: if ((r = sshbuf_get_u32(msg, &status)) != 0)
846: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.107 djm 847: error("Couldn't canonicalize: %s", fx2txt(status));
1.116 djm 848: sshbuf_free(msg);
1.91 djm 849: return NULL;
1.1 djm 850: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 851: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 852: SSH2_FXP_NAME, type);
853:
1.116 djm 854: if ((r = sshbuf_get_u32(msg, &count)) != 0)
855: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 856: if (count != 1)
857: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
858:
1.116 djm 859: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
860: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
861: (r = decode_attrib(msg, &a)) != 0)
862: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.1 djm 863:
1.97 dtucker 864: debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
1.116 djm 865: (unsigned long)a.size);
1.1 djm 866:
1.98 djm 867: free(longname);
1.1 djm 868:
1.116 djm 869: sshbuf_free(msg);
1.1 djm 870:
871: return(filename);
872: }
873:
874: int
1.116 djm 875: do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath,
1.102 djm 876: int force_legacy)
1.1 djm 877: {
1.116 djm 878: struct sshbuf *msg;
1.1 djm 879: u_int status, id;
1.116 djm 880: int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
1.1 djm 881:
1.116 djm 882: if ((msg = sshbuf_new()) == NULL)
883: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 884:
885: /* Send rename request */
1.23 djm 886: id = conn->msg_id++;
1.102 djm 887: if (use_ext) {
1.116 djm 888: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
889: (r = sshbuf_put_u32(msg, id)) != 0 ||
890: (r = sshbuf_put_cstring(msg,
891: "posix-rename@openssh.com")) != 0)
892: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.81 djm 893: } else {
1.116 djm 894: if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 ||
895: (r = sshbuf_put_u32(msg, id)) != 0)
896: fatal("%s: buffer error: %s", __func__, ssh_err(r));
897: }
898: if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
899: (r = sshbuf_put_cstring(msg, newpath)) != 0)
900: fatal("%s: buffer error: %s", __func__, ssh_err(r));
901: send_msg(conn, msg);
1.81 djm 902: debug3("Sent message %s \"%s\" -> \"%s\"",
1.116 djm 903: use_ext ? "posix-rename@openssh.com" :
904: "SSH2_FXP_RENAME", oldpath, newpath);
905: sshbuf_free(msg);
1.1 djm 906:
1.93 djm 907: status = get_status(conn, id);
1.1 djm 908: if (status != SSH2_FX_OK)
1.23 djm 909: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 910: newpath, fx2txt(status));
911:
1.116 djm 912: return status == SSH2_FX_OK ? 0 : -1;
1.94 djm 913: }
914:
915: int
1.116 djm 916: do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.94 djm 917: {
1.116 djm 918: struct sshbuf *msg;
1.94 djm 919: u_int status, id;
1.116 djm 920: int r;
1.94 djm 921:
922: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
923: error("Server does not support hardlink@openssh.com extension");
924: return -1;
925: }
926:
1.116 djm 927: if ((msg = sshbuf_new()) == NULL)
928: fatal("%s: sshbuf_new failed", __func__);
1.95 markus 929:
930: /* Send link request */
931: id = conn->msg_id++;
1.116 djm 932: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
933: (r = sshbuf_put_u32(msg, id)) != 0 ||
934: (r = sshbuf_put_cstring(msg, "hardlink@openssh.com")) != 0 ||
935: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
936: (r = sshbuf_put_cstring(msg, newpath)) != 0)
937: fatal("%s: buffer error: %s", __func__, ssh_err(r));
938: send_msg(conn, msg);
1.94 djm 939: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
940: oldpath, newpath);
1.116 djm 941: sshbuf_free(msg);
1.94 djm 942:
943: status = get_status(conn, id);
944: if (status != SSH2_FX_OK)
945: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 946: newpath, fx2txt(status));
1.1 djm 947:
1.116 djm 948: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 949: }
950:
951: int
1.116 djm 952: do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.11 djm 953: {
1.116 djm 954: struct sshbuf *msg;
1.11 djm 955: u_int status, id;
1.116 djm 956: int r;
1.11 djm 957:
1.23 djm 958: if (conn->version < 3) {
959: error("This server does not support the symlink operation");
960: return(SSH2_FX_OP_UNSUPPORTED);
961: }
962:
1.116 djm 963: if ((msg = sshbuf_new()) == NULL)
964: fatal("%s: sshbuf_new failed", __func__);
1.11 djm 965:
1.48 djm 966: /* Send symlink request */
1.23 djm 967: id = conn->msg_id++;
1.116 djm 968: if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 ||
969: (r = sshbuf_put_u32(msg, id)) != 0 ||
970: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
971: (r = sshbuf_put_cstring(msg, newpath)) != 0)
972: fatal("%s: buffer error: %s", __func__, ssh_err(r));
973: send_msg(conn, msg);
1.11 djm 974: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
975: newpath);
1.116 djm 976: sshbuf_free(msg);
1.11 djm 977:
1.93 djm 978: status = get_status(conn, id);
1.11 djm 979: if (status != SSH2_FX_OK)
1.36 markus 980: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 981: newpath, fx2txt(status));
1.11 djm 982:
1.116 djm 983: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 984: }
985:
1.107 djm 986: int
1.116 djm 987: do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len)
1.107 djm 988: {
1.116 djm 989: struct sshbuf *msg;
1.107 djm 990: u_int status, id;
1.116 djm 991: int r;
1.107 djm 992:
993: /* Silently return if the extension is not supported */
994: if ((conn->exts & SFTP_EXT_FSYNC) == 0)
995: return -1;
996:
997: /* Send fsync request */
1.116 djm 998: if ((msg = sshbuf_new()) == NULL)
999: fatal("%s: sshbuf_new failed", __func__);
1.107 djm 1000: id = conn->msg_id++;
1.116 djm 1001: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1002: (r = sshbuf_put_u32(msg, id)) != 0 ||
1003: (r = sshbuf_put_cstring(msg, "fsync@openssh.com")) != 0 ||
1004: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1005: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1006: send_msg(conn, msg);
1.107 djm 1007: debug3("Sent message fsync@openssh.com I:%u", id);
1.116 djm 1008: sshbuf_free(msg);
1.107 djm 1009:
1010: status = get_status(conn, id);
1011: if (status != SSH2_FX_OK)
1012: error("Couldn't sync file: %s", fx2txt(status));
1013:
1.129 djm 1014: return status == SSH2_FX_OK ? 0 : -1;
1.107 djm 1015: }
1016:
1.78 chl 1017: #ifdef notyet
1.11 djm 1018: char *
1.116 djm 1019: do_readlink(struct sftp_conn *conn, const char *path)
1.11 djm 1020: {
1.116 djm 1021: struct sshbuf *msg;
1022: u_int expected_id, count, id;
1.11 djm 1023: char *filename, *longname;
1.116 djm 1024: Attrib a;
1025: u_char type;
1026: int r;
1.11 djm 1027:
1.23 djm 1028: expected_id = id = conn->msg_id++;
1.93 djm 1029: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 1030:
1.116 djm 1031: if ((msg = sshbuf_new()) == NULL)
1032: fatal("%s: sshbuf_new failed", __func__);
1.11 djm 1033:
1.116 djm 1034: get_msg(conn, msg);
1035: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1036: (r = sshbuf_get_u32(msg, &id)) != 0)
1037: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1038:
1039: if (id != expected_id)
1.33 deraadt 1040: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 1041:
1042: if (type == SSH2_FXP_STATUS) {
1.116 djm 1043: u_int status;
1.11 djm 1044:
1.116 djm 1045: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1046: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1047: error("Couldn't readlink: %s", fx2txt(status));
1.116 djm 1048: sshbuf_free(msg);
1.11 djm 1049: return(NULL);
1050: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 1051: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 1052: SSH2_FXP_NAME, type);
1053:
1.116 djm 1054: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1055: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1056: if (count != 1)
1057: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
1058:
1.116 djm 1059: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
1060: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
1061: (r = decode_attrib(msg, &a)) != 0)
1062: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.11 djm 1063:
1064: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
1065:
1.98 djm 1066: free(longname);
1.11 djm 1067:
1.116 djm 1068: sshbuf_free(msg);
1.11 djm 1069:
1.116 djm 1070: return filename;
1.82 djm 1071: }
1072: #endif
1073:
1074: int
1.84 dtucker 1075: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 1076: int quiet)
1077: {
1.116 djm 1078: struct sshbuf *msg;
1.82 djm 1079: u_int id;
1.116 djm 1080: int r;
1.82 djm 1081:
1082: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
1083: error("Server does not support statvfs@openssh.com extension");
1084: return -1;
1085: }
1086:
1087: id = conn->msg_id++;
1088:
1.116 djm 1089: if ((msg = sshbuf_new()) == NULL)
1090: fatal("%s: sshbuf_new failed", __func__);
1091: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1092: (r = sshbuf_put_u32(msg, id)) != 0 ||
1093: (r = sshbuf_put_cstring(msg, "statvfs@openssh.com")) != 0 ||
1094: (r = sshbuf_put_cstring(msg, path)) != 0)
1095: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1096: send_msg(conn, msg);
1097: sshbuf_free(msg);
1.82 djm 1098:
1.93 djm 1099: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 1100: }
1101:
1102: #ifdef notyet
1103: int
1.116 djm 1104: do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.84 dtucker 1105: struct sftp_statvfs *st, int quiet)
1.82 djm 1106: {
1.116 djm 1107: struct sshbuf *msg;
1.82 djm 1108: u_int id;
1109:
1110: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
1111: error("Server does not support fstatvfs@openssh.com extension");
1112: return -1;
1113: }
1114:
1115: id = conn->msg_id++;
1116:
1.116 djm 1117: if ((msg = sshbuf_new()) == NULL)
1118: fatal("%s: sshbuf_new failed", __func__);
1119: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1120: (r = sshbuf_put_u32(msg, id)) != 0 ||
1121: (r = sshbuf_put_cstring(msg, "fstatvfs@openssh.com")) != 0 ||
1122: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1123: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1124: send_msg(conn, msg);
1125: sshbuf_free(msg);
1.82 djm 1126:
1.93 djm 1127: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 1128: }
1.78 chl 1129: #endif
1.1 djm 1130:
1.131 djm 1131: int
1132: do_lsetstat(struct sftp_conn *conn, const char *path, Attrib *a)
1133: {
1134: struct sshbuf *msg;
1135: u_int status, id;
1136: int r;
1137:
1138: if ((conn->exts & SFTP_EXT_LSETSTAT) == 0) {
1139: error("Server does not support lsetstat@openssh.com extension");
1140: return -1;
1141: }
1142:
1143: id = conn->msg_id++;
1144: if ((msg = sshbuf_new()) == NULL)
1145: fatal("%s: sshbuf_new failed", __func__);
1146: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1147: (r = sshbuf_put_u32(msg, id)) != 0 ||
1148: (r = sshbuf_put_cstring(msg, "lsetstat@openssh.com")) != 0 ||
1149: (r = sshbuf_put_cstring(msg, path)) != 0 ||
1150: (r = encode_attrib(msg, a)) != 0)
1151: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1152: send_msg(conn, msg);
1153: sshbuf_free(msg);
1154:
1155: status = get_status(conn, id);
1156: if (status != SSH2_FX_OK)
1157: error("Couldn't setstat on \"%s\": %s", path,
1158: fx2txt(status));
1159:
1160: return status == SSH2_FX_OK ? 0 : -1;
1161: }
1162:
1.21 djm 1163: static void
1.93 djm 1164: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
1.116 djm 1165: u_int len, const u_char *handle, u_int handle_len)
1.21 djm 1166: {
1.116 djm 1167: struct sshbuf *msg;
1168: int r;
1.28 markus 1169:
1.116 djm 1170: if ((msg = sshbuf_new()) == NULL)
1171: fatal("%s: sshbuf_new failed", __func__);
1172: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 ||
1173: (r = sshbuf_put_u32(msg, id)) != 0 ||
1174: (r = sshbuf_put_string(msg, handle, handle_len)) != 0 ||
1175: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1176: (r = sshbuf_put_u32(msg, len)) != 0)
1177: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1178: send_msg(conn, msg);
1179: sshbuf_free(msg);
1.28 markus 1180: }
1.21 djm 1181:
1.1 djm 1182: int
1.116 djm 1183: do_download(struct sftp_conn *conn, const char *remote_path,
1184: const char *local_path, Attrib *a, int preserve_flag, int resume_flag,
1185: int fsync_flag)
1.1 djm 1186: {
1.89 djm 1187: Attrib junk;
1.116 djm 1188: struct sshbuf *msg;
1189: u_char *handle;
1190: int local_fd = -1, write_error;
1.134 djm 1191: int read_error, write_errno, lmodified = 0, reordered = 0, r;
1.101 djm 1192: u_int64_t offset = 0, size, highwater;
1.116 djm 1193: u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK;
1.39 fgsch 1194: off_t progress_counter;
1.116 djm 1195: size_t handle_len;
1.101 djm 1196: struct stat st;
1.21 djm 1197: struct request {
1198: u_int id;
1.116 djm 1199: size_t len;
1.21 djm 1200: u_int64_t offset;
1.28 markus 1201: TAILQ_ENTRY(request) tq;
1.21 djm 1202: };
1203: TAILQ_HEAD(reqhead, request) requests;
1204: struct request *req;
1.116 djm 1205: u_char type;
1.21 djm 1206:
1207: TAILQ_INIT(&requests);
1.1 djm 1208:
1.89 djm 1209: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1210: return -1;
1.1 djm 1211:
1.86 djm 1212: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1213: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1214: mode = a->perm & 0777;
1.1 djm 1215: else
1216: mode = 0666;
1217:
1.14 djm 1218: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1219: (!S_ISREG(a->perm))) {
1220: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1221: return(-1);
1222: }
1223:
1.21 djm 1224: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1225: size = a->size;
1226: else
1227: size = 0;
1228:
1.23 djm 1229: buflen = conn->transfer_buflen;
1.116 djm 1230: if ((msg = sshbuf_new()) == NULL)
1231: fatal("%s: sshbuf_new failed", __func__);
1232:
1233: attrib_clear(&junk); /* Send empty attributes */
1.1 djm 1234:
1235: /* Send open request */
1.23 djm 1236: id = conn->msg_id++;
1.116 djm 1237: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1238: (r = sshbuf_put_u32(msg, id)) != 0 ||
1239: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1240: (r = sshbuf_put_u32(msg, SSH2_FXF_READ)) != 0 ||
1241: (r = encode_attrib(msg, &junk)) != 0)
1242: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1243: send_msg(conn, msg);
1.33 deraadt 1244: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1245:
1.93 djm 1246: handle = get_handle(conn, id, &handle_len,
1.88 djm 1247: "remote open(\"%s\")", remote_path);
1.1 djm 1248: if (handle == NULL) {
1.116 djm 1249: sshbuf_free(msg);
1.1 djm 1250: return(-1);
1251: }
1252:
1.105 djm 1253: local_fd = open(local_path,
1254: O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
1.23 djm 1255: if (local_fd == -1) {
1256: error("Couldn't open local file \"%s\" for writing: %s",
1257: local_path, strerror(errno));
1.101 djm 1258: goto fail;
1259: }
1260: offset = highwater = 0;
1.105 djm 1261: if (resume_flag) {
1.101 djm 1262: if (fstat(local_fd, &st) == -1) {
1263: error("Unable to stat local file \"%s\": %s",
1264: local_path, strerror(errno));
1265: goto fail;
1266: }
1.113 djm 1267: if (st.st_size < 0) {
1268: error("\"%s\" has negative size", local_path);
1269: goto fail;
1270: }
1271: if ((u_int64_t)st.st_size > size) {
1.101 djm 1272: error("Unable to resume download of \"%s\": "
1273: "local file is larger than remote", local_path);
1274: fail:
1275: do_close(conn, handle, handle_len);
1.116 djm 1276: sshbuf_free(msg);
1.101 djm 1277: free(handle);
1.110 djm 1278: if (local_fd != -1)
1279: close(local_fd);
1.101 djm 1280: return -1;
1281: }
1282: offset = highwater = st.st_size;
1.23 djm 1283: }
1284:
1.1 djm 1285: /* Read from remote and write to local */
1.101 djm 1286: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1287: max_req = 1;
1.101 djm 1288: progress_counter = offset;
1.39 fgsch 1289:
1.47 djm 1290: if (showprogress && size != 0)
1291: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1292:
1.21 djm 1293: while (num_req > 0 || max_req > 0) {
1.116 djm 1294: u_char *data;
1295: size_t len;
1.1 djm 1296:
1.49 djm 1297: /*
1.51 deraadt 1298: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1299: * allow outstanding requests to drain gracefully
1300: */
1301: if (interrupted) {
1302: if (num_req == 0) /* If we haven't started yet... */
1303: break;
1304: max_req = 0;
1305: }
1306:
1.21 djm 1307: /* Send some more requests */
1308: while (num_req < max_req) {
1.28 markus 1309: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1310: (unsigned long long)offset,
1311: (unsigned long long)offset + buflen - 1,
1312: num_req, max_req);
1.108 djm 1313: req = xcalloc(1, sizeof(*req));
1.23 djm 1314: req->id = conn->msg_id++;
1.21 djm 1315: req->len = buflen;
1316: req->offset = offset;
1317: offset += buflen;
1318: num_req++;
1319: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1320: send_read_request(conn, req->id, req->offset,
1.21 djm 1321: req->len, handle, handle_len);
1322: }
1.1 djm 1323:
1.116 djm 1324: sshbuf_reset(msg);
1325: get_msg(conn, msg);
1326: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1327: (r = sshbuf_get_u32(msg, &id)) != 0)
1328: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.33 deraadt 1329: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1330:
1331: /* Find the request in our queue */
1.53 deraadt 1332: for (req = TAILQ_FIRST(&requests);
1.21 djm 1333: req != NULL && req->id != id;
1334: req = TAILQ_NEXT(req, tq))
1335: ;
1336: if (req == NULL)
1337: fatal("Unexpected reply %u", id);
1338:
1339: switch (type) {
1340: case SSH2_FXP_STATUS:
1.116 djm 1341: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1342: fatal("%s: buffer error: %s",
1343: __func__, ssh_err(r));
1.21 djm 1344: if (status != SSH2_FX_EOF)
1345: read_error = 1;
1346: max_req = 0;
1347: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1348: free(req);
1.21 djm 1349: num_req--;
1350: break;
1351: case SSH2_FXP_DATA:
1.116 djm 1352: if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
1353: fatal("%s: buffer error: %s",
1354: __func__, ssh_err(r));
1.26 itojun 1355: debug3("Received data %llu -> %llu",
1.28 markus 1356: (unsigned long long)req->offset,
1.26 itojun 1357: (unsigned long long)req->offset + len - 1);
1.21 djm 1358: if (len > req->len)
1359: fatal("Received more data than asked for "
1.116 djm 1360: "%zu > %zu", len, req->len);
1.134 djm 1361: lmodified = 1;
1.21 djm 1362: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1363: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1364: !write_error) {
1365: write_errno = errno;
1366: write_error = 1;
1367: max_req = 0;
1368: }
1.101 djm 1369: else if (!reordered && req->offset <= highwater)
1370: highwater = req->offset + len;
1371: else if (!reordered && req->offset > highwater)
1372: reordered = 1;
1.39 fgsch 1373: progress_counter += len;
1.98 djm 1374: free(data);
1.1 djm 1375:
1.21 djm 1376: if (len == req->len) {
1377: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1378: free(req);
1.21 djm 1379: num_req--;
1380: } else {
1381: /* Resend the request for the missing data */
1382: debug3("Short data block, re-requesting "
1.26 itojun 1383: "%llu -> %llu (%2d)",
1.28 markus 1384: (unsigned long long)req->offset + len,
1.27 itojun 1385: (unsigned long long)req->offset +
1386: req->len - 1, num_req);
1.23 djm 1387: req->id = conn->msg_id++;
1.21 djm 1388: req->len -= len;
1389: req->offset += len;
1.93 djm 1390: send_read_request(conn, req->id,
1.23 djm 1391: req->offset, req->len, handle, handle_len);
1.21 djm 1392: /* Reduce the request size */
1393: if (len < buflen)
1.125 deraadt 1394: buflen = MAXIMUM(MIN_READ_SIZE, len);
1.21 djm 1395: }
1396: if (max_req > 0) { /* max_req = 0 iff EOF received */
1397: if (size > 0 && offset > size) {
1398: /* Only one request at a time
1399: * after the expected EOF */
1400: debug3("Finish at %llu (%2d)",
1.26 itojun 1401: (unsigned long long)offset,
1402: num_req);
1.21 djm 1403: max_req = 1;
1.49 djm 1404: } else if (max_req <= conn->num_requests) {
1.21 djm 1405: ++max_req;
1406: }
1.1 djm 1407: }
1.21 djm 1408: break;
1409: default:
1.33 deraadt 1410: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1411: SSH2_FXP_DATA, type);
1412: }
1.21 djm 1413: }
1.1 djm 1414:
1.39 fgsch 1415: if (showprogress && size)
1416: stop_progress_meter();
1417:
1.21 djm 1418: /* Sanity check */
1419: if (TAILQ_FIRST(&requests) != NULL)
1420: fatal("Transfer complete, but requests still in queue");
1.101 djm 1421: /* Truncate at highest contiguous point to avoid holes on interrupt */
1422: if (read_error || write_error || interrupted) {
1.105 djm 1423: if (reordered && resume_flag) {
1.101 djm 1424: error("Unable to resume download of \"%s\": "
1425: "server reordered requests", local_path);
1426: }
1427: debug("truncating at %llu", (unsigned long long)highwater);
1.120 djm 1428: if (ftruncate(local_fd, highwater) == -1)
1429: error("ftruncate \"%s\": %s", local_path,
1430: strerror(errno));
1.101 djm 1431: }
1.21 djm 1432: if (read_error) {
1.28 markus 1433: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1434: remote_path, fx2txt(status));
1.103 djm 1435: status = -1;
1.23 djm 1436: do_close(conn, handle, handle_len);
1.21 djm 1437: } else if (write_error) {
1438: error("Couldn't write to \"%s\": %s", local_path,
1439: strerror(write_errno));
1.116 djm 1440: status = SSH2_FX_FAILURE;
1.23 djm 1441: do_close(conn, handle, handle_len);
1.21 djm 1442: } else {
1.116 djm 1443: if (do_close(conn, handle, handle_len) != 0 || interrupted)
1444: status = SSH2_FX_FAILURE;
1445: else
1446: status = SSH2_FX_OK;
1.21 djm 1447: /* Override umask and utimes if asked */
1.105 djm 1448: if (preserve_flag && fchmod(local_fd, mode) == -1)
1.21 djm 1449: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1450: strerror(errno));
1.105 djm 1451: if (preserve_flag &&
1452: (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1.21 djm 1453: struct timeval tv[2];
1454: tv[0].tv_sec = a->atime;
1455: tv[1].tv_sec = a->mtime;
1456: tv[0].tv_usec = tv[1].tv_usec = 0;
1457: if (utimes(local_path, tv) == -1)
1458: error("Can't set times on \"%s\": %s",
1.37 deraadt 1459: local_path, strerror(errno));
1.1 djm 1460: }
1.134 djm 1461: if (resume_flag && !lmodified)
1462: logit("File \"%s\" was not modified", local_path);
1463: else if (fsync_flag) {
1.107 djm 1464: debug("syncing \"%s\"", local_path);
1465: if (fsync(local_fd) == -1)
1466: error("Couldn't sync file \"%s\": %s",
1467: local_path, strerror(errno));
1468: }
1.10 djm 1469: }
1.5 djm 1470: close(local_fd);
1.116 djm 1471: sshbuf_free(msg);
1.98 djm 1472: free(handle);
1.23 djm 1473:
1.129 djm 1474: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1475: }
1476:
1.89 djm 1477: static int
1.116 djm 1478: download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1479: int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
1480: int resume_flag, int fsync_flag)
1.89 djm 1481: {
1482: int i, ret = 0;
1483: SFTP_DIRENT **dir_entries;
1.130 djm 1484: char *filename, *new_src = NULL, *new_dst = NULL;
1.89 djm 1485: mode_t mode = 0777;
1486:
1487: if (depth >= MAX_DIR_DEPTH) {
1488: error("Maximum directory depth exceeded: %d levels", depth);
1489: return -1;
1490: }
1491:
1492: if (dirattrib == NULL &&
1493: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1494: error("Unable to stat remote directory \"%s\"", src);
1495: return -1;
1496: }
1497: if (!S_ISDIR(dirattrib->perm)) {
1498: error("\"%s\" is not a directory", src);
1499: return -1;
1500: }
1.105 djm 1501: if (print_flag)
1.124 schwarze 1502: mprintf("Retrieving %s\n", src);
1.89 djm 1503:
1504: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1505: mode = dirattrib->perm & 01777;
1506: else {
1507: debug("Server did not send permissions for "
1508: "directory \"%s\"", dst);
1509: }
1510:
1511: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1512: error("mkdir %s: %s", dst, strerror(errno));
1513: return -1;
1514: }
1515:
1516: if (do_readdir(conn, src, &dir_entries) == -1) {
1517: error("%s: Failed to get directory contents", src);
1518: return -1;
1519: }
1520:
1521: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1.130 djm 1522: free(new_dst);
1523: free(new_src);
1524:
1.89 djm 1525: filename = dir_entries[i]->filename;
1526: new_dst = path_append(dst, filename);
1527: new_src = path_append(src, filename);
1528:
1529: if (S_ISDIR(dir_entries[i]->a.perm)) {
1530: if (strcmp(filename, ".") == 0 ||
1531: strcmp(filename, "..") == 0)
1532: continue;
1533: if (download_dir_internal(conn, new_src, new_dst,
1.105 djm 1534: depth + 1, &(dir_entries[i]->a), preserve_flag,
1.107 djm 1535: print_flag, resume_flag, fsync_flag) == -1)
1.89 djm 1536: ret = -1;
1537: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1538: if (do_download(conn, new_src, new_dst,
1.107 djm 1539: &(dir_entries[i]->a), preserve_flag,
1540: resume_flag, fsync_flag) == -1) {
1.89 djm 1541: error("Download of file %s to %s failed",
1542: new_src, new_dst);
1543: ret = -1;
1544: }
1545: } else
1546: logit("%s: not a regular file\n", new_src);
1547:
1548: }
1.130 djm 1549: free(new_dst);
1550: free(new_src);
1.89 djm 1551:
1.105 djm 1552: if (preserve_flag) {
1.89 djm 1553: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1554: struct timeval tv[2];
1555: tv[0].tv_sec = dirattrib->atime;
1556: tv[1].tv_sec = dirattrib->mtime;
1557: tv[0].tv_usec = tv[1].tv_usec = 0;
1558: if (utimes(dst, tv) == -1)
1559: error("Can't set times on \"%s\": %s",
1560: dst, strerror(errno));
1561: } else
1562: debug("Server did not send times for directory "
1563: "\"%s\"", dst);
1564: }
1565:
1566: free_sftp_dirents(dir_entries);
1567:
1568: return ret;
1569: }
1570:
1571: int
1.116 djm 1572: download_dir(struct sftp_conn *conn, const char *src, const char *dst,
1573: Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
1574: int fsync_flag)
1.89 djm 1575: {
1576: char *src_canon;
1577: int ret;
1578:
1579: if ((src_canon = do_realpath(conn, src)) == NULL) {
1.107 djm 1580: error("Unable to canonicalize path \"%s\"", src);
1.89 djm 1581: return -1;
1582: }
1583:
1.105 djm 1584: ret = download_dir_internal(conn, src_canon, dst, 0,
1.107 djm 1585: dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag);
1.98 djm 1586: free(src_canon);
1.89 djm 1587: return ret;
1588: }
1589:
1.1 djm 1590: int
1.116 djm 1591: do_upload(struct sftp_conn *conn, const char *local_path,
1592: const char *remote_path, int preserve_flag, int resume, int fsync_flag)
1.1 djm 1593: {
1.116 djm 1594: int r, local_fd;
1595: u_int status = SSH2_FX_OK;
1596: u_int id;
1597: u_char type;
1.100 dtucker 1598: off_t offset, progress_counter;
1.116 djm 1599: u_char *handle, *data;
1600: struct sshbuf *msg;
1.1 djm 1601: struct stat sb;
1.115 logan 1602: Attrib a, *c = NULL;
1.21 djm 1603: u_int32_t startid;
1604: u_int32_t ackid;
1.22 djm 1605: struct outstanding_ack {
1606: u_int id;
1607: u_int len;
1.77 djm 1608: off_t offset;
1.28 markus 1609: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1610: };
1611: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1612: struct outstanding_ack *ack = NULL;
1.116 djm 1613: size_t handle_len;
1.22 djm 1614:
1615: TAILQ_INIT(&acks);
1.1 djm 1616:
1617: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1618: error("Couldn't open local file \"%s\" for reading: %s",
1619: local_path, strerror(errno));
1620: return(-1);
1621: }
1622: if (fstat(local_fd, &sb) == -1) {
1623: error("Couldn't fstat local file \"%s\": %s",
1624: local_path, strerror(errno));
1.41 djm 1625: close(local_fd);
1626: return(-1);
1627: }
1628: if (!S_ISREG(sb.st_mode)) {
1629: error("%s is not a regular file", local_path);
1.1 djm 1630: close(local_fd);
1631: return(-1);
1632: }
1633: stat_to_attrib(&sb, &a);
1634:
1635: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1636: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1637: a.perm &= 0777;
1.105 djm 1638: if (!preserve_flag)
1.1 djm 1639: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1640:
1.115 logan 1641: if (resume) {
1642: /* Get remote file size if it exists */
1643: if ((c = do_stat(conn, remote_path, 0)) == NULL) {
1.122 djm 1644: close(local_fd);
1.115 logan 1645: return -1;
1646: }
1647:
1648: if ((off_t)c->size >= sb.st_size) {
1649: error("destination file bigger or same size as "
1650: "source file");
1651: close(local_fd);
1652: return -1;
1653: }
1654:
1655: if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
1656: close(local_fd);
1657: return -1;
1658: }
1659: }
1660:
1.116 djm 1661: if ((msg = sshbuf_new()) == NULL)
1662: fatal("%s: sshbuf_new failed", __func__);
1.1 djm 1663:
1664: /* Send open request */
1.23 djm 1665: id = conn->msg_id++;
1.116 djm 1666: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1667: (r = sshbuf_put_u32(msg, id)) != 0 ||
1668: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1669: (r = sshbuf_put_u32(msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|
1670: (resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC))) != 0 ||
1671: (r = encode_attrib(msg, &a)) != 0)
1672: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1673: send_msg(conn, msg);
1.33 deraadt 1674: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1675:
1.116 djm 1676: sshbuf_reset(msg);
1.1 djm 1677:
1.93 djm 1678: handle = get_handle(conn, id, &handle_len,
1.88 djm 1679: "remote open(\"%s\")", remote_path);
1.1 djm 1680: if (handle == NULL) {
1681: close(local_fd);
1.116 djm 1682: sshbuf_free(msg);
1.80 djm 1683: return -1;
1.1 djm 1684: }
1685:
1.21 djm 1686: startid = ackid = id + 1;
1.23 djm 1687: data = xmalloc(conn->transfer_buflen);
1.20 djm 1688:
1.1 djm 1689: /* Read from local and write to remote */
1.115 logan 1690: offset = progress_counter = (resume ? c->size : 0);
1.39 fgsch 1691: if (showprogress)
1.100 dtucker 1692: start_progress_meter(local_path, sb.st_size,
1693: &progress_counter);
1.39 fgsch 1694:
1.19 deraadt 1695: for (;;) {
1.1 djm 1696: int len;
1697:
1698: /*
1.51 deraadt 1699: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1700: * thus losing the last block of the file.
1.51 deraadt 1701: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1702: * server to drain.
1.1 djm 1703: */
1.80 djm 1704: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1705: len = 0;
1706: else do
1.23 djm 1707: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1708: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1709:
1710: if (len == -1)
1711: fatal("Couldn't read from \"%s\": %s", local_path,
1712: strerror(errno));
1.21 djm 1713:
1714: if (len != 0) {
1.108 djm 1715: ack = xcalloc(1, sizeof(*ack));
1.22 djm 1716: ack->id = ++id;
1717: ack->offset = offset;
1718: ack->len = len;
1719: TAILQ_INSERT_TAIL(&acks, ack, tq);
1720:
1.116 djm 1721: sshbuf_reset(msg);
1722: if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
1723: (r = sshbuf_put_u32(msg, ack->id)) != 0 ||
1724: (r = sshbuf_put_string(msg, handle,
1725: handle_len)) != 0 ||
1726: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1727: (r = sshbuf_put_string(msg, data, len)) != 0)
1728: fatal("%s: buffer error: %s",
1729: __func__, ssh_err(r));
1730: send_msg(conn, msg);
1.33 deraadt 1731: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1732: id, (unsigned long long)offset, len);
1.22 djm 1733: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1734: break;
1735:
1.22 djm 1736: if (ack == NULL)
1737: fatal("Unexpected ACK %u", id);
1738:
1.28 markus 1739: if (id == startid || len == 0 ||
1.23 djm 1740: id - ackid >= conn->num_requests) {
1.116 djm 1741: u_int rid;
1.31 djm 1742:
1.116 djm 1743: sshbuf_reset(msg);
1744: get_msg(conn, msg);
1745: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1746: (r = sshbuf_get_u32(msg, &rid)) != 0)
1747: fatal("%s: buffer error: %s",
1748: __func__, ssh_err(r));
1.22 djm 1749:
1750: if (type != SSH2_FXP_STATUS)
1751: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1752: "got %d", SSH2_FXP_STATUS, type);
1753:
1.116 djm 1754: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1755: fatal("%s: buffer error: %s",
1756: __func__, ssh_err(r));
1757: debug3("SSH2_FXP_STATUS %u", status);
1.22 djm 1758:
1759: /* Find the request in our queue */
1.53 deraadt 1760: for (ack = TAILQ_FIRST(&acks);
1.116 djm 1761: ack != NULL && ack->id != rid;
1.22 djm 1762: ack = TAILQ_NEXT(ack, tq))
1763: ;
1764: if (ack == NULL)
1.116 djm 1765: fatal("Can't find request for ID %u", rid);
1.22 djm 1766: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1767: debug3("In write loop, ack for %u %u bytes at %lld",
1768: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1769: ++ackid;
1.100 dtucker 1770: progress_counter += ack->len;
1.98 djm 1771: free(ack);
1.1 djm 1772: }
1773: offset += len;
1.77 djm 1774: if (offset < 0)
1775: fatal("%s: offset < 0", __func__);
1.1 djm 1776: }
1.116 djm 1777: sshbuf_free(msg);
1.80 djm 1778:
1.39 fgsch 1779: if (showprogress)
1780: stop_progress_meter();
1.98 djm 1781: free(data);
1.1 djm 1782:
1.80 djm 1783: if (status != SSH2_FX_OK) {
1784: error("Couldn't write to remote file \"%s\": %s",
1785: remote_path, fx2txt(status));
1.116 djm 1786: status = SSH2_FX_FAILURE;
1.80 djm 1787: }
1788:
1.1 djm 1789: if (close(local_fd) == -1) {
1790: error("Couldn't close local file \"%s\": %s", local_path,
1791: strerror(errno));
1.116 djm 1792: status = SSH2_FX_FAILURE;
1.1 djm 1793: }
1794:
1.10 djm 1795: /* Override umask and utimes if asked */
1.105 djm 1796: if (preserve_flag)
1.23 djm 1797: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1798:
1.107 djm 1799: if (fsync_flag)
1800: (void)do_fsync(conn, handle, handle_len);
1801:
1.121 djm 1802: if (do_close(conn, handle, handle_len) != 0)
1.116 djm 1803: status = SSH2_FX_FAILURE;
1804:
1.98 djm 1805: free(handle);
1.5 djm 1806:
1.116 djm 1807: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1808: }
1.89 djm 1809:
1810: static int
1.116 djm 1811: upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1812: int depth, int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1813: {
1.116 djm 1814: int ret = 0;
1.89 djm 1815: DIR *dirp;
1816: struct dirent *dp;
1.130 djm 1817: char *filename, *new_src = NULL, *new_dst = NULL;
1.89 djm 1818: struct stat sb;
1.121 djm 1819: Attrib a, *dirattrib;
1.89 djm 1820:
1821: if (depth >= MAX_DIR_DEPTH) {
1822: error("Maximum directory depth exceeded: %d levels", depth);
1823: return -1;
1824: }
1825:
1826: if (stat(src, &sb) == -1) {
1827: error("Couldn't stat directory \"%s\": %s",
1828: src, strerror(errno));
1829: return -1;
1830: }
1831: if (!S_ISDIR(sb.st_mode)) {
1832: error("\"%s\" is not a directory", src);
1833: return -1;
1834: }
1.105 djm 1835: if (print_flag)
1.124 schwarze 1836: mprintf("Entering %s\n", src);
1.89 djm 1837:
1838: attrib_clear(&a);
1839: stat_to_attrib(&sb, &a);
1840: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1841: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1842: a.perm &= 01777;
1.105 djm 1843: if (!preserve_flag)
1.89 djm 1844: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 1845:
1.89 djm 1846: /*
1.121 djm 1847: * sftp lacks a portable status value to match errno EEXIST,
1848: * so if we get a failure back then we must check whether
1849: * the path already existed and is a directory.
1.89 djm 1850: */
1.121 djm 1851: if (do_mkdir(conn, dst, &a, 0) != 0) {
1852: if ((dirattrib = do_stat(conn, dst, 0)) == NULL)
1.89 djm 1853: return -1;
1.121 djm 1854: if (!S_ISDIR(dirattrib->perm)) {
1855: error("\"%s\" exists but is not a directory", dst);
1.89 djm 1856: return -1;
1.121 djm 1857: }
1.89 djm 1858: }
1859:
1860: if ((dirp = opendir(src)) == NULL) {
1861: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1862: return -1;
1863: }
1.101 djm 1864:
1.89 djm 1865: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1866: if (dp->d_ino == 0)
1867: continue;
1.130 djm 1868: free(new_dst);
1869: free(new_src);
1.89 djm 1870: filename = dp->d_name;
1871: new_dst = path_append(dst, filename);
1872: new_src = path_append(src, filename);
1873:
1.90 dtucker 1874: if (lstat(new_src, &sb) == -1) {
1875: logit("%s: lstat failed: %s", filename,
1876: strerror(errno));
1877: ret = -1;
1878: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1879: if (strcmp(filename, ".") == 0 ||
1880: strcmp(filename, "..") == 0)
1881: continue;
1882:
1883: if (upload_dir_internal(conn, new_src, new_dst,
1.115 logan 1884: depth + 1, preserve_flag, print_flag, resume,
1.107 djm 1885: fsync_flag) == -1)
1.89 djm 1886: ret = -1;
1.90 dtucker 1887: } else if (S_ISREG(sb.st_mode)) {
1.105 djm 1888: if (do_upload(conn, new_src, new_dst,
1.115 logan 1889: preserve_flag, resume, fsync_flag) == -1) {
1.89 djm 1890: error("Uploading of file %s to %s failed!",
1891: new_src, new_dst);
1892: ret = -1;
1893: }
1894: } else
1895: logit("%s: not a regular file\n", filename);
1896: }
1.130 djm 1897: free(new_dst);
1898: free(new_src);
1.89 djm 1899:
1900: do_setstat(conn, dst, &a);
1901:
1902: (void) closedir(dirp);
1903: return ret;
1904: }
1905:
1906: int
1.116 djm 1907: upload_dir(struct sftp_conn *conn, const char *src, const char *dst,
1908: int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1909: {
1910: char *dst_canon;
1911: int ret;
1912:
1913: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1.107 djm 1914: error("Unable to canonicalize path \"%s\"", dst);
1.89 djm 1915: return -1;
1916: }
1917:
1.106 djm 1918: ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
1.115 logan 1919: print_flag, resume, fsync_flag);
1.107 djm 1920:
1.98 djm 1921: free(dst_canon);
1.89 djm 1922: return ret;
1923: }
1924:
1925: char *
1.116 djm 1926: path_append(const char *p1, const char *p2)
1.89 djm 1927: {
1928: char *ret;
1929: size_t len = strlen(p1) + strlen(p2) + 2;
1930:
1931: ret = xmalloc(len);
1932: strlcpy(ret, p1, len);
1933: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1934: strlcat(ret, "/", len);
1935: strlcat(ret, p2, len);
1936:
1937: return(ret);
1938: }
1939:
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