Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.158
1.158 ! jsg 1: /* $OpenBSD: sftp-client.c,v 1.157 2021/11/06 10:13:39 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>
1.152 djm 34: #include <poll.h>
1.70 stevesk 35: #include <signal.h>
1.87 dtucker 36: #include <stdarg.h>
1.73 stevesk 37: #include <stdio.h>
1.109 dtucker 38: #include <stdlib.h>
1.69 stevesk 39: #include <string.h>
1.68 stevesk 40: #include <unistd.h>
1.1 djm 41:
1.74 deraadt 42: #include "xmalloc.h"
1.116 djm 43: #include "ssherr.h"
44: #include "sshbuf.h"
1.1 djm 45: #include "log.h"
46: #include "atomicio.h"
1.39 fgsch 47: #include "progressmeter.h"
1.64 djm 48: #include "misc.h"
1.124 schwarze 49: #include "utf8.h"
1.1 djm 50:
51: #include "sftp.h"
52: #include "sftp-common.h"
53: #include "sftp-client.h"
54:
1.49 djm 55: extern volatile sig_atomic_t interrupted;
1.39 fgsch 56: extern int showprogress;
57:
1.141 djm 58: /* Default size of buffer for up/download */
59: #define DEFAULT_COPY_BUFLEN 32768
60:
61: /* Default number of concurrent outstanding requests */
62: #define DEFAULT_NUM_REQUESTS 64
63:
1.59 david 64: /* Minimum amount of data to read at a time */
1.21 djm 65: #define MIN_READ_SIZE 512
66:
1.89 djm 67: /* Maximum depth to descend in directory trees */
68: #define MAX_DIR_DEPTH 64
69:
1.23 djm 70: struct sftp_conn {
71: int fd_in;
72: int fd_out;
1.141 djm 73: u_int download_buflen;
74: u_int upload_buflen;
1.23 djm 75: u_int num_requests;
76: u_int version;
77: u_int msg_id;
1.82 djm 78: #define SFTP_EXT_POSIX_RENAME 0x00000001
79: #define SFTP_EXT_STATVFS 0x00000002
80: #define SFTP_EXT_FSTATVFS 0x00000004
1.94 djm 81: #define SFTP_EXT_HARDLINK 0x00000008
1.107 djm 82: #define SFTP_EXT_FSYNC 0x00000010
1.131 djm 83: #define SFTP_EXT_LSETSTAT 0x00000020
1.141 djm 84: #define SFTP_EXT_LIMITS 0x00000040
1.154 djm 85: #define SFTP_EXT_PATH_EXPAND 0x00000080
1.81 djm 86: u_int exts;
1.93 djm 87: u_int64_t limit_kbps;
88: struct bwlimit bwlimit_in, bwlimit_out;
1.23 djm 89: };
1.4 djm 90:
1.146 djm 91: /* Tracks in-progress requests during file transfers */
92: struct request {
93: u_int id;
94: size_t len;
95: u_int64_t offset;
96: TAILQ_ENTRY(request) tq;
97: };
98: TAILQ_HEAD(requests, request);
99:
1.116 djm 100: static u_char *
101: get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
1.93 djm 102: const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
103:
1.151 djm 104: static struct request *
105: request_enqueue(struct requests *requests, u_int id, size_t len,
106: uint64_t offset)
107: {
108: struct request *req;
109:
110: req = xcalloc(1, sizeof(*req));
111: req->id = id;
112: req->len = len;
113: req->offset = offset;
114: TAILQ_INSERT_TAIL(requests, req, tq);
115: return req;
116: }
117:
118: static struct request *
119: request_find(struct requests *requests, u_int id)
120: {
121: struct request *req;
122:
123: for (req = TAILQ_FIRST(requests);
124: req != NULL && req->id != id;
125: req = TAILQ_NEXT(req, tq))
126: ;
127: return req;
128: }
129:
1.93 djm 130: /* ARGSUSED */
131: static int
132: sftpio(void *_bwlimit, size_t amount)
133: {
134: struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
135:
1.133 dtucker 136: refresh_progress_meter(0);
1.132 dtucker 137: if (bwlimit != NULL)
138: bandwidth_limit(bwlimit, amount);
1.93 djm 139: return 0;
140: }
1.88 djm 141:
1.17 itojun 142: static void
1.116 djm 143: send_msg(struct sftp_conn *conn, struct sshbuf *m)
1.1 djm 144: {
1.40 djm 145: u_char mlen[4];
1.65 djm 146: struct iovec iov[2];
1.40 djm 147:
1.116 djm 148: if (sshbuf_len(m) > SFTP_MAX_MSG_LENGTH)
149: fatal("Outbound message too long %zu", sshbuf_len(m));
1.40 djm 150:
151: /* Send length first */
1.116 djm 152: put_u32(mlen, sshbuf_len(m));
1.65 djm 153: iov[0].iov_base = mlen;
154: iov[0].iov_len = sizeof(mlen);
1.116 djm 155: iov[1].iov_base = (u_char *)sshbuf_ptr(m);
156: iov[1].iov_len = sshbuf_len(m);
1.74 deraadt 157:
1.132 dtucker 158: if (atomiciov6(writev, conn->fd_out, iov, 2, sftpio,
159: conn->limit_kbps > 0 ? &conn->bwlimit_out : NULL) !=
1.116 djm 160: sshbuf_len(m) + sizeof(mlen))
1.1 djm 161: fatal("Couldn't send packet: %s", strerror(errno));
162:
1.116 djm 163: sshbuf_reset(m);
1.1 djm 164: }
165:
1.17 itojun 166: static void
1.128 dtucker 167: get_msg_extended(struct sftp_conn *conn, struct sshbuf *m, int initial)
1.1 djm 168: {
1.40 djm 169: u_int msg_len;
1.116 djm 170: u_char *p;
171: int r;
1.1 djm 172:
1.144 djm 173: sshbuf_reset(m);
1.116 djm 174: if ((r = sshbuf_reserve(m, 4, &p)) != 0)
1.137 djm 175: fatal_fr(r, "reserve");
1.132 dtucker 176: if (atomicio6(read, conn->fd_in, p, 4, sftpio,
177: conn->limit_kbps > 0 ? &conn->bwlimit_in : NULL) != 4) {
1.127 djm 178: if (errno == EPIPE || errno == ECONNRESET)
1.54 avsm 179: fatal("Connection closed");
180: else
181: fatal("Couldn't read packet: %s", strerror(errno));
182: }
1.1 djm 183:
1.116 djm 184: if ((r = sshbuf_get_u32(m, &msg_len)) != 0)
1.137 djm 185: fatal_fr(r, "sshbuf_get_u32");
1.128 dtucker 186: if (msg_len > SFTP_MAX_MSG_LENGTH) {
187: do_log2(initial ? SYSLOG_LEVEL_ERROR : SYSLOG_LEVEL_FATAL,
188: "Received message too long %u", msg_len);
189: fatal("Ensure the remote shell produces no output "
190: "for non-interactive sessions.");
191: }
1.1 djm 192:
1.116 djm 193: if ((r = sshbuf_reserve(m, msg_len, &p)) != 0)
1.137 djm 194: fatal_fr(r, "reserve");
1.132 dtucker 195: if (atomicio6(read, conn->fd_in, p, msg_len, sftpio,
196: conn->limit_kbps > 0 ? &conn->bwlimit_in : NULL)
1.93 djm 197: != msg_len) {
1.54 avsm 198: if (errno == EPIPE)
199: fatal("Connection closed");
200: else
201: fatal("Read packet: %s", strerror(errno));
202: }
1.1 djm 203: }
204:
1.17 itojun 205: static void
1.128 dtucker 206: get_msg(struct sftp_conn *conn, struct sshbuf *m)
207: {
208: get_msg_extended(conn, m, 0);
209: }
210:
211: static void
1.116 djm 212: send_string_request(struct sftp_conn *conn, u_int id, u_int code, const char *s,
1.1 djm 213: u_int len)
214: {
1.116 djm 215: struct sshbuf *msg;
216: int r;
1.1 djm 217:
1.116 djm 218: if ((msg = sshbuf_new()) == NULL)
1.137 djm 219: fatal_f("sshbuf_new failed");
1.116 djm 220: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
221: (r = sshbuf_put_u32(msg, id)) != 0 ||
222: (r = sshbuf_put_string(msg, s, len)) != 0)
1.137 djm 223: fatal_fr(r, "compose");
1.116 djm 224: send_msg(conn, msg);
1.93 djm 225: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.116 djm 226: sshbuf_free(msg);
1.1 djm 227: }
228:
1.17 itojun 229: static void
1.93 djm 230: send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
1.116 djm 231: const void *s, u_int len, Attrib *a)
1.1 djm 232: {
1.116 djm 233: struct sshbuf *msg;
234: int r;
1.1 djm 235:
1.116 djm 236: if ((msg = sshbuf_new()) == NULL)
1.137 djm 237: fatal_f("sshbuf_new failed");
1.116 djm 238: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
239: (r = sshbuf_put_u32(msg, id)) != 0 ||
240: (r = sshbuf_put_string(msg, s, len)) != 0 ||
241: (r = encode_attrib(msg, a)) != 0)
1.137 djm 242: fatal_fr(r, "compose");
1.116 djm 243: send_msg(conn, msg);
1.148 djm 244: debug3("Sent message fd %d T:%u I:%u F:0x%04x M:%05o",
245: conn->fd_out, code, id, a->flags, a->perm);
1.116 djm 246: sshbuf_free(msg);
1.1 djm 247: }
248:
1.17 itojun 249: static u_int
1.93 djm 250: get_status(struct sftp_conn *conn, u_int expected_id)
1.1 djm 251: {
1.116 djm 252: struct sshbuf *msg;
253: u_char type;
254: u_int id, status;
255: int r;
1.1 djm 256:
1.116 djm 257: if ((msg = sshbuf_new()) == NULL)
1.137 djm 258: fatal_f("sshbuf_new failed");
1.116 djm 259: get_msg(conn, msg);
260: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
261: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 262: fatal_fr(r, "compose");
1.1 djm 263:
264: if (id != expected_id)
1.33 deraadt 265: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 266: if (type != SSH2_FXP_STATUS)
1.33 deraadt 267: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 268: SSH2_FXP_STATUS, type);
269:
1.116 djm 270: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 271: fatal_fr(r, "parse");
1.116 djm 272: sshbuf_free(msg);
1.1 djm 273:
1.33 deraadt 274: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 275:
1.93 djm 276: return status;
1.1 djm 277: }
278:
1.116 djm 279: static u_char *
280: get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
1.93 djm 281: const char *errfmt, ...)
1.1 djm 282: {
1.116 djm 283: struct sshbuf *msg;
284: u_int id, status;
285: u_char type;
286: u_char *handle;
287: char errmsg[256];
1.88 djm 288: va_list args;
1.116 djm 289: int r;
1.88 djm 290:
291: va_start(args, errfmt);
292: if (errfmt != NULL)
293: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
294: va_end(args);
1.1 djm 295:
1.116 djm 296: if ((msg = sshbuf_new()) == NULL)
1.137 djm 297: fatal_f("sshbuf_new failed");
1.116 djm 298: get_msg(conn, msg);
299: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
300: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 301: fatal_fr(r, "parse");
1.1 djm 302:
303: if (id != expected_id)
1.88 djm 304: fatal("%s: ID mismatch (%u != %u)",
305: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 306: if (type == SSH2_FXP_STATUS) {
1.116 djm 307: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 308: fatal_fr(r, "parse status");
1.88 djm 309: if (errfmt != NULL)
310: error("%s: %s", errmsg, fx2txt(status));
1.116 djm 311: sshbuf_free(msg);
1.1 djm 312: return(NULL);
313: } else if (type != SSH2_FXP_HANDLE)
1.88 djm 314: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
315: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 316:
1.116 djm 317: if ((r = sshbuf_get_string(msg, &handle, len)) != 0)
1.137 djm 318: fatal_fr(r, "parse handle");
1.116 djm 319: sshbuf_free(msg);
1.1 djm 320:
1.116 djm 321: return handle;
1.1 djm 322: }
323:
1.158 ! jsg 324: /* XXX returning &static is error-prone. Refactor to fill *Attrib argument */
1.17 itojun 325: static Attrib *
1.93 djm 326: get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
1.1 djm 327: {
1.116 djm 328: struct sshbuf *msg;
329: u_int id;
330: u_char type;
331: int r;
332: static Attrib a;
333:
334: if ((msg = sshbuf_new()) == NULL)
1.137 djm 335: fatal_f("sshbuf_new failed");
1.116 djm 336: get_msg(conn, msg);
337:
338: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
339: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 340: fatal_fr(r, "parse");
1.1 djm 341:
342: if (id != expected_id)
1.33 deraadt 343: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 344: if (type == SSH2_FXP_STATUS) {
1.116 djm 345: u_int status;
1.1 djm 346:
1.116 djm 347: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 348: fatal_fr(r, "parse status");
1.14 djm 349: if (quiet)
350: debug("Couldn't stat remote file: %s", fx2txt(status));
351: else
352: error("Couldn't stat remote file: %s", fx2txt(status));
1.116 djm 353: sshbuf_free(msg);
1.1 djm 354: return(NULL);
355: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 356: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 357: SSH2_FXP_ATTRS, type);
358: }
1.116 djm 359: if ((r = decode_attrib(msg, &a)) != 0) {
1.137 djm 360: error_fr(r, "decode_attrib");
1.116 djm 361: sshbuf_free(msg);
362: return NULL;
363: }
1.158 ! jsg 364: debug3("Received stat reply T:%u I:%u F:0x%04x M:%05o",
1.148 djm 365: type, id, a.flags, a.perm);
1.116 djm 366: sshbuf_free(msg);
1.1 djm 367:
1.116 djm 368: return &a;
1.1 djm 369: }
370:
1.82 djm 371: static int
1.93 djm 372: get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
373: u_int expected_id, int quiet)
1.82 djm 374: {
1.116 djm 375: struct sshbuf *msg;
376: u_char type;
377: u_int id;
378: u_int64_t flag;
379: int r;
1.82 djm 380:
1.116 djm 381: if ((msg = sshbuf_new()) == NULL)
1.137 djm 382: fatal_f("sshbuf_new failed");
1.116 djm 383: get_msg(conn, msg);
384:
385: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
386: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 387: fatal_fr(r, "parse");
1.82 djm 388:
389: debug3("Received statvfs reply T:%u I:%u", type, id);
390: if (id != expected_id)
391: fatal("ID mismatch (%u != %u)", id, expected_id);
392: if (type == SSH2_FXP_STATUS) {
1.116 djm 393: u_int status;
1.82 djm 394:
1.116 djm 395: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 396: fatal_fr(r, "parse status");
1.82 djm 397: if (quiet)
398: debug("Couldn't statvfs: %s", fx2txt(status));
399: else
400: error("Couldn't statvfs: %s", fx2txt(status));
1.116 djm 401: sshbuf_free(msg);
1.82 djm 402: return -1;
403: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
404: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
405: SSH2_FXP_EXTENDED_REPLY, type);
406: }
407:
1.114 tedu 408: memset(st, 0, sizeof(*st));
1.116 djm 409: if ((r = sshbuf_get_u64(msg, &st->f_bsize)) != 0 ||
410: (r = sshbuf_get_u64(msg, &st->f_frsize)) != 0 ||
411: (r = sshbuf_get_u64(msg, &st->f_blocks)) != 0 ||
412: (r = sshbuf_get_u64(msg, &st->f_bfree)) != 0 ||
413: (r = sshbuf_get_u64(msg, &st->f_bavail)) != 0 ||
414: (r = sshbuf_get_u64(msg, &st->f_files)) != 0 ||
415: (r = sshbuf_get_u64(msg, &st->f_ffree)) != 0 ||
416: (r = sshbuf_get_u64(msg, &st->f_favail)) != 0 ||
417: (r = sshbuf_get_u64(msg, &st->f_fsid)) != 0 ||
418: (r = sshbuf_get_u64(msg, &flag)) != 0 ||
419: (r = sshbuf_get_u64(msg, &st->f_namemax)) != 0)
1.137 djm 420: fatal_fr(r, "parse statvfs");
1.82 djm 421:
422: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
423: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
424:
1.116 djm 425: sshbuf_free(msg);
1.82 djm 426:
427: return 0;
428: }
429:
1.23 djm 430: struct sftp_conn *
1.93 djm 431: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
432: u_int64_t limit_kbps)
1.1 djm 433: {
1.116 djm 434: u_char type;
435: struct sshbuf *msg;
1.23 djm 436: struct sftp_conn *ret;
1.116 djm 437: int r;
1.1 djm 438:
1.103 djm 439: ret = xcalloc(1, sizeof(*ret));
440: ret->msg_id = 1;
1.93 djm 441: ret->fd_in = fd_in;
442: ret->fd_out = fd_out;
1.141 djm 443: ret->download_buflen = ret->upload_buflen =
444: transfer_buflen ? transfer_buflen : DEFAULT_COPY_BUFLEN;
445: ret->num_requests =
446: num_requests ? num_requests : DEFAULT_NUM_REQUESTS;
1.93 djm 447: ret->exts = 0;
448: ret->limit_kbps = 0;
449:
1.116 djm 450: if ((msg = sshbuf_new()) == NULL)
1.137 djm 451: fatal_f("sshbuf_new failed");
1.116 djm 452: if ((r = sshbuf_put_u8(msg, SSH2_FXP_INIT)) != 0 ||
453: (r = sshbuf_put_u32(msg, SSH2_FILEXFER_VERSION)) != 0)
1.137 djm 454: fatal_fr(r, "parse");
455:
1.116 djm 456: send_msg(ret, msg);
1.1 djm 457:
1.128 dtucker 458: get_msg_extended(ret, msg, 1);
1.1 djm 459:
1.3 stevesk 460: /* Expecting a VERSION reply */
1.116 djm 461: if ((r = sshbuf_get_u8(msg, &type)) != 0)
1.137 djm 462: fatal_fr(r, "parse type");
1.116 djm 463: if (type != SSH2_FXP_VERSION) {
1.33 deraadt 464: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 465: type);
1.116 djm 466: sshbuf_free(msg);
1.119 jsg 467: free(ret);
1.23 djm 468: return(NULL);
1.1 djm 469: }
1.116 djm 470: if ((r = sshbuf_get_u32(msg, &ret->version)) != 0)
1.137 djm 471: fatal_fr(r, "parse version");
1.1 djm 472:
1.93 djm 473: debug2("Remote version: %u", ret->version);
1.1 djm 474:
475: /* Check for extensions */
1.116 djm 476: while (sshbuf_len(msg) > 0) {
477: char *name;
478: u_char *value;
479: size_t vlen;
1.85 djm 480: int known = 0;
1.1 djm 481:
1.116 djm 482: if ((r = sshbuf_get_cstring(msg, &name, NULL)) != 0 ||
483: (r = sshbuf_get_string(msg, &value, &vlen)) != 0)
1.137 djm 484: fatal_fr(r, "parse extension");
1.82 djm 485: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.116 djm 486: strcmp((char *)value, "1") == 0) {
1.93 djm 487: ret->exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 488: known = 1;
489: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
1.116 djm 490: strcmp((char *)value, "2") == 0) {
1.93 djm 491: ret->exts |= SFTP_EXT_STATVFS;
1.85 djm 492: known = 1;
1.94 djm 493: } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
1.116 djm 494: strcmp((char *)value, "2") == 0) {
1.93 djm 495: ret->exts |= SFTP_EXT_FSTATVFS;
1.85 djm 496: known = 1;
1.94 djm 497: } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
1.116 djm 498: strcmp((char *)value, "1") == 0) {
1.94 djm 499: ret->exts |= SFTP_EXT_HARDLINK;
500: known = 1;
1.116 djm 501: } else if (strcmp(name, "fsync@openssh.com") == 0 &&
502: strcmp((char *)value, "1") == 0) {
503: ret->exts |= SFTP_EXT_FSYNC;
504: known = 1;
1.131 djm 505: } else if (strcmp(name, "lsetstat@openssh.com") == 0 &&
506: strcmp((char *)value, "1") == 0) {
507: ret->exts |= SFTP_EXT_LSETSTAT;
508: known = 1;
1.141 djm 509: } else if (strcmp(name, "limits@openssh.com") == 0 &&
510: strcmp((char *)value, "1") == 0) {
511: ret->exts |= SFTP_EXT_LIMITS;
512: known = 1;
1.154 djm 513: } else if (strcmp(name, "expand-path@openssh.com") == 0 &&
514: strcmp((char *)value, "1") == 0) {
515: ret->exts |= SFTP_EXT_PATH_EXPAND;
516: known = 1;
1.85 djm 517: }
518: if (known) {
519: debug2("Server supports extension \"%s\" revision %s",
520: name, value);
521: } else {
522: debug2("Unrecognised server extension \"%s\"", name);
523: }
1.98 djm 524: free(name);
525: free(value);
1.1 djm 526: }
527:
1.116 djm 528: sshbuf_free(msg);
1.11 djm 529:
1.141 djm 530: /* Query the server for its limits */
531: if (ret->exts & SFTP_EXT_LIMITS) {
532: struct sftp_limits limits;
533: if (do_limits(ret, &limits) != 0)
534: fatal_f("limits failed");
535:
536: /* If the caller did not specify, find a good value */
537: if (transfer_buflen == 0) {
538: ret->download_buflen = limits.read_length;
539: ret->upload_buflen = limits.write_length;
540: debug("Using server download size %u", ret->download_buflen);
541: debug("Using server upload size %u", ret->upload_buflen);
542: }
543:
544: /* Use the server limit to scale down our value only */
545: if (num_requests == 0 && limits.open_handles) {
546: ret->num_requests =
547: MINIMUM(DEFAULT_NUM_REQUESTS, limits.open_handles);
548: debug("Server handle limit %llu; using %u",
1.142 djm 549: (unsigned long long)limits.open_handles,
550: ret->num_requests);
1.141 djm 551: }
552: }
553:
1.23 djm 554: /* Some filexfer v.0 servers don't support large packets */
1.141 djm 555: if (ret->version == 0) {
556: ret->download_buflen = MINIMUM(ret->download_buflen, 20480);
557: ret->upload_buflen = MINIMUM(ret->upload_buflen, 20480);
558: }
1.23 djm 559:
1.93 djm 560: ret->limit_kbps = limit_kbps;
561: if (ret->limit_kbps > 0) {
562: bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
1.141 djm 563: ret->download_buflen);
1.93 djm 564: bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
1.141 djm 565: ret->upload_buflen);
1.93 djm 566: }
567:
568: return ret;
1.23 djm 569: }
570:
571: u_int
572: sftp_proto_version(struct sftp_conn *conn)
573: {
1.93 djm 574: return conn->version;
1.1 djm 575: }
576:
577: int
1.141 djm 578: do_limits(struct sftp_conn *conn, struct sftp_limits *limits)
579: {
580: u_int id, msg_id;
581: u_char type;
582: struct sshbuf *msg;
583: int r;
584:
585: if ((conn->exts & SFTP_EXT_LIMITS) == 0) {
586: error("Server does not support limits@openssh.com extension");
587: return -1;
588: }
589:
590: if ((msg = sshbuf_new()) == NULL)
591: fatal_f("sshbuf_new failed");
592:
593: id = conn->msg_id++;
594: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
595: (r = sshbuf_put_u32(msg, id)) != 0 ||
596: (r = sshbuf_put_cstring(msg, "limits@openssh.com")) != 0)
597: fatal_fr(r, "compose");
598: send_msg(conn, msg);
599: debug3("Sent message limits@openssh.com I:%u", id);
600:
601: get_msg(conn, msg);
602:
603: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
604: (r = sshbuf_get_u32(msg, &msg_id)) != 0)
605: fatal_fr(r, "parse");
606:
607: debug3("Received limits reply T:%u I:%u", type, msg_id);
608: if (id != msg_id)
609: fatal("ID mismatch (%u != %u)", msg_id, id);
610: if (type != SSH2_FXP_EXTENDED_REPLY) {
1.143 djm 611: debug_f("expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
1.142 djm 612: SSH2_FXP_EXTENDED_REPLY, type);
1.143 djm 613: /* Disable the limits extension */
614: conn->exts &= ~SFTP_EXT_LIMITS;
615: sshbuf_free(msg);
616: return 0;
1.141 djm 617: }
618:
619: memset(limits, 0, sizeof(*limits));
620: if ((r = sshbuf_get_u64(msg, &limits->packet_length)) != 0 ||
621: (r = sshbuf_get_u64(msg, &limits->read_length)) != 0 ||
622: (r = sshbuf_get_u64(msg, &limits->write_length)) != 0 ||
623: (r = sshbuf_get_u64(msg, &limits->open_handles)) != 0)
624: fatal_fr(r, "parse limits");
625:
626: sshbuf_free(msg);
627:
628: return 0;
629: }
630:
631: int
1.116 djm 632: do_close(struct sftp_conn *conn, const u_char *handle, u_int handle_len)
1.1 djm 633: {
634: u_int id, status;
1.116 djm 635: struct sshbuf *msg;
636: int r;
1.1 djm 637:
1.116 djm 638: if ((msg = sshbuf_new()) == NULL)
1.137 djm 639: fatal_f("sshbuf_new failed");
1.1 djm 640:
1.23 djm 641: id = conn->msg_id++;
1.116 djm 642: if ((r = sshbuf_put_u8(msg, SSH2_FXP_CLOSE)) != 0 ||
643: (r = sshbuf_put_u32(msg, id)) != 0 ||
644: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1.137 djm 645: fatal_fr(r, "parse");
1.116 djm 646: send_msg(conn, msg);
1.33 deraadt 647: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 648:
1.93 djm 649: status = get_status(conn, id);
1.1 djm 650: if (status != SSH2_FX_OK)
651: error("Couldn't close file: %s", fx2txt(status));
652:
1.116 djm 653: sshbuf_free(msg);
1.1 djm 654:
1.116 djm 655: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 656: }
657:
1.12 djm 658:
1.17 itojun 659: static int
1.116 djm 660: do_lsreaddir(struct sftp_conn *conn, const char *path, int print_flag,
1.12 djm 661: SFTP_DIRENT ***dir)
1.1 djm 662: {
1.116 djm 663: struct sshbuf *msg;
664: u_int count, id, i, expected_id, ents = 0;
665: size_t handle_len;
1.123 djm 666: u_char type, *handle;
1.111 djm 667: int status = SSH2_FX_FAILURE;
1.116 djm 668: int r;
1.111 djm 669:
670: if (dir)
671: *dir = NULL;
1.1 djm 672:
1.23 djm 673: id = conn->msg_id++;
1.1 djm 674:
1.116 djm 675: if ((msg = sshbuf_new()) == NULL)
1.137 djm 676: fatal_f("sshbuf_new failed");
1.116 djm 677: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPENDIR)) != 0 ||
678: (r = sshbuf_put_u32(msg, id)) != 0 ||
679: (r = sshbuf_put_cstring(msg, path)) != 0)
1.137 djm 680: fatal_fr(r, "compose OPENDIR");
1.116 djm 681: send_msg(conn, msg);
1.1 djm 682:
1.93 djm 683: handle = get_handle(conn, id, &handle_len,
1.88 djm 684: "remote readdir(\"%s\")", path);
1.96 markus 685: if (handle == NULL) {
1.116 djm 686: sshbuf_free(msg);
1.93 djm 687: return -1;
1.96 markus 688: }
1.1 djm 689:
1.12 djm 690: if (dir) {
691: ents = 0;
1.108 djm 692: *dir = xcalloc(1, sizeof(**dir));
1.12 djm 693: (*dir)[0] = NULL;
694: }
695:
1.49 djm 696: for (; !interrupted;) {
1.23 djm 697: id = expected_id = conn->msg_id++;
1.1 djm 698:
1.33 deraadt 699: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 700:
1.116 djm 701: sshbuf_reset(msg);
702: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READDIR)) != 0 ||
703: (r = sshbuf_put_u32(msg, id)) != 0 ||
704: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1.137 djm 705: fatal_fr(r, "compose READDIR");
1.116 djm 706: send_msg(conn, msg);
707:
708: sshbuf_reset(msg);
709:
710: get_msg(conn, msg);
711:
712: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
713: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 714: fatal_fr(r, "parse");
1.1 djm 715:
1.33 deraadt 716: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 717:
718: if (id != expected_id)
1.33 deraadt 719: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 720:
721: if (type == SSH2_FXP_STATUS) {
1.116 djm 722: u_int rstatus;
723:
724: if ((r = sshbuf_get_u32(msg, &rstatus)) != 0)
1.137 djm 725: fatal_fr(r, "parse status");
1.116 djm 726: debug3("Received SSH2_FXP_STATUS %d", rstatus);
727: if (rstatus == SSH2_FX_EOF)
1.1 djm 728: break;
1.116 djm 729: error("Couldn't read directory: %s", fx2txt(rstatus));
1.111 djm 730: goto out;
1.1 djm 731: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 732: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 733: SSH2_FXP_NAME, type);
734:
1.116 djm 735: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1.137 djm 736: fatal_fr(r, "parse count");
1.126 djm 737: if (count > SSHBUF_SIZE_MAX)
1.137 djm 738: fatal_f("nonsensical number of entries");
1.7 markus 739: if (count == 0)
740: break;
1.8 stevesk 741: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 742: for (i = 0; i < count; i++) {
1.1 djm 743: char *filename, *longname;
1.116 djm 744: Attrib a;
1.1 djm 745:
1.116 djm 746: if ((r = sshbuf_get_cstring(msg, &filename,
747: NULL)) != 0 ||
748: (r = sshbuf_get_cstring(msg, &longname,
749: NULL)) != 0)
1.137 djm 750: fatal_fr(r, "parse filenames");
1.116 djm 751: if ((r = decode_attrib(msg, &a)) != 0) {
1.137 djm 752: error_fr(r, "couldn't decode attrib");
1.116 djm 753: free(filename);
754: free(longname);
1.135 djm 755: goto out;
1.116 djm 756: }
1.1 djm 757:
1.105 djm 758: if (print_flag)
1.124 schwarze 759: mprintf("%s\n", longname);
1.12 djm 760:
1.89 djm 761: /*
762: * Directory entries should never contain '/'
763: * These can be used to attack recursive ops
764: * (e.g. send '../../../../etc/passwd')
765: */
766: if (strchr(filename, '/') != NULL) {
767: error("Server sent suspect path \"%s\" "
768: "during readdir of \"%s\"", filename, path);
1.111 djm 769: } else if (dir) {
1.118 deraadt 770: *dir = xreallocarray(*dir, ents + 2, sizeof(**dir));
1.108 djm 771: (*dir)[ents] = xcalloc(1, sizeof(***dir));
1.12 djm 772: (*dir)[ents]->filename = xstrdup(filename);
773: (*dir)[ents]->longname = xstrdup(longname);
1.116 djm 774: memcpy(&(*dir)[ents]->a, &a, sizeof(a));
1.12 djm 775: (*dir)[++ents] = NULL;
776: }
1.98 djm 777: free(filename);
778: free(longname);
1.1 djm 779: }
780: }
1.111 djm 781: status = 0;
1.1 djm 782:
1.111 djm 783: out:
1.116 djm 784: sshbuf_free(msg);
1.23 djm 785: do_close(conn, handle, handle_len);
1.98 djm 786: free(handle);
1.1 djm 787:
1.111 djm 788: if (status != 0 && dir != NULL) {
789: /* Don't return results on error */
790: free_sftp_dirents(*dir);
791: *dir = NULL;
792: } else if (interrupted && dir != NULL && *dir != NULL) {
793: /* Don't return partial matches on interrupt */
1.49 djm 794: free_sftp_dirents(*dir);
1.108 djm 795: *dir = xcalloc(1, sizeof(**dir));
1.49 djm 796: **dir = NULL;
797: }
798:
1.129 djm 799: return status == SSH2_FX_OK ? 0 : -1;
1.12 djm 800: }
801:
802: int
1.116 djm 803: do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir)
1.12 djm 804: {
1.23 djm 805: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 806: }
807:
808: void free_sftp_dirents(SFTP_DIRENT **s)
809: {
810: int i;
1.19 deraadt 811:
1.111 djm 812: if (s == NULL)
813: return;
1.19 deraadt 814: for (i = 0; s[i]; i++) {
1.98 djm 815: free(s[i]->filename);
816: free(s[i]->longname);
817: free(s[i]);
1.12 djm 818: }
1.98 djm 819: free(s);
1.12 djm 820: }
821:
822: int
1.116 djm 823: do_rm(struct sftp_conn *conn, const char *path)
1.1 djm 824: {
825: u_int status, id;
826:
827: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
828:
1.23 djm 829: id = conn->msg_id++;
1.93 djm 830: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
831: status = get_status(conn, id);
1.1 djm 832: if (status != SSH2_FX_OK)
833: error("Couldn't delete file: %s", fx2txt(status));
1.116 djm 834: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 835: }
836:
837: int
1.116 djm 838: do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag)
1.1 djm 839: {
840: u_int status, id;
841:
1.23 djm 842: id = conn->msg_id++;
1.93 djm 843: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 844: strlen(path), a);
845:
1.93 djm 846: status = get_status(conn, id);
1.105 djm 847: if (status != SSH2_FX_OK && print_flag)
1.1 djm 848: error("Couldn't create directory: %s", fx2txt(status));
849:
1.116 djm 850: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 851: }
852:
853: int
1.116 djm 854: do_rmdir(struct sftp_conn *conn, const char *path)
1.1 djm 855: {
856: u_int status, id;
857:
1.23 djm 858: id = conn->msg_id++;
1.93 djm 859: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 860: strlen(path));
1.1 djm 861:
1.93 djm 862: status = get_status(conn, id);
1.1 djm 863: if (status != SSH2_FX_OK)
864: error("Couldn't remove directory: %s", fx2txt(status));
865:
1.116 djm 866: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 867: }
868:
869: Attrib *
1.116 djm 870: do_stat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 871: {
872: u_int id;
873:
1.23 djm 874: id = conn->msg_id++;
875:
1.93 djm 876: send_string_request(conn, id,
1.28 markus 877: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 878: path, strlen(path));
879:
1.93 djm 880: return(get_decode_stat(conn, id, quiet));
1.1 djm 881: }
882:
883: Attrib *
1.116 djm 884: do_lstat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 885: {
886: u_int id;
887:
1.23 djm 888: if (conn->version == 0) {
889: if (quiet)
890: debug("Server version does not support lstat operation");
891: else
1.43 itojun 892: logit("Server version does not support lstat operation");
1.30 markus 893: return(do_stat(conn, path, quiet));
1.23 djm 894: }
895:
896: id = conn->msg_id++;
1.93 djm 897: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 898: strlen(path));
899:
1.93 djm 900: return(get_decode_stat(conn, id, quiet));
1.1 djm 901: }
902:
1.78 chl 903: #ifdef notyet
1.1 djm 904: Attrib *
1.116 djm 905: do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
906: int quiet)
1.1 djm 907: {
908: u_int id;
909:
1.23 djm 910: id = conn->msg_id++;
1.93 djm 911: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 912: handle_len);
913:
1.93 djm 914: return(get_decode_stat(conn, id, quiet));
1.1 djm 915: }
1.78 chl 916: #endif
1.1 djm 917:
918: int
1.116 djm 919: do_setstat(struct sftp_conn *conn, const char *path, Attrib *a)
1.1 djm 920: {
921: u_int status, id;
922:
1.23 djm 923: id = conn->msg_id++;
1.93 djm 924: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 925: strlen(path), a);
926:
1.93 djm 927: status = get_status(conn, id);
1.1 djm 928: if (status != SSH2_FX_OK)
929: error("Couldn't setstat on \"%s\": %s", path,
930: fx2txt(status));
931:
1.116 djm 932: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 933: }
934:
935: int
1.116 djm 936: do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.1 djm 937: Attrib *a)
938: {
939: u_int status, id;
940:
1.23 djm 941: id = conn->msg_id++;
1.93 djm 942: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 943: handle_len, a);
944:
1.93 djm 945: status = get_status(conn, id);
1.1 djm 946: if (status != SSH2_FX_OK)
947: error("Couldn't fsetstat: %s", fx2txt(status));
948:
1.116 djm 949: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 950: }
951:
1.154 djm 952: /* Implements both the realpath and expand-path operations */
953: static char *
954: do_realpath_expand(struct sftp_conn *conn, const char *path, int expand)
1.1 djm 955: {
1.116 djm 956: struct sshbuf *msg;
957: u_int expected_id, count, id;
1.1 djm 958: char *filename, *longname;
1.116 djm 959: Attrib a;
960: u_char type;
961: int r;
1.154 djm 962: const char *what = "SSH2_FXP_REALPATH";
1.1 djm 963:
1.154 djm 964: if (expand)
965: what = "expand-path@openssh.com";
1.116 djm 966: if ((msg = sshbuf_new()) == NULL)
1.137 djm 967: fatal_f("sshbuf_new failed");
1.1 djm 968:
1.154 djm 969: expected_id = id = conn->msg_id++;
970: if (expand) {
971: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
972: (r = sshbuf_put_u32(msg, id)) != 0 ||
973: (r = sshbuf_put_cstring(msg,
974: "expand-path@openssh.com")) != 0 ||
975: (r = sshbuf_put_cstring(msg, path)) != 0)
976: fatal_fr(r, "compose %s", what);
977: send_msg(conn, msg);
978: } else {
979: send_string_request(conn, id, SSH2_FXP_REALPATH,
980: path, strlen(path));
981: }
1.116 djm 982: get_msg(conn, msg);
983: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
984: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 985: fatal_fr(r, "parse");
1.1 djm 986:
987: if (id != expected_id)
1.33 deraadt 988: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 989:
990: if (type == SSH2_FXP_STATUS) {
1.116 djm 991: u_int status;
1.1 djm 992:
1.116 djm 993: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 994: fatal_fr(r, "parse status");
1.107 djm 995: error("Couldn't canonicalize: %s", fx2txt(status));
1.116 djm 996: sshbuf_free(msg);
1.91 djm 997: return NULL;
1.1 djm 998: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 999: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 1000: SSH2_FXP_NAME, type);
1001:
1.116 djm 1002: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1.137 djm 1003: fatal_fr(r, "parse count");
1.1 djm 1004: if (count != 1)
1.154 djm 1005: fatal("Got multiple names (%d) from %s", count, what);
1.1 djm 1006:
1.116 djm 1007: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
1008: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
1009: (r = decode_attrib(msg, &a)) != 0)
1.137 djm 1010: fatal_fr(r, "parse filename/attrib");
1.1 djm 1011:
1.154 djm 1012: debug3("%s %s -> %s", what, path, filename);
1.1 djm 1013:
1.98 djm 1014: free(longname);
1.1 djm 1015:
1.116 djm 1016: sshbuf_free(msg);
1.1 djm 1017:
1018: return(filename);
1.154 djm 1019: }
1020:
1021: char *
1022: do_realpath(struct sftp_conn *conn, const char *path)
1023: {
1024: return do_realpath_expand(conn, path, 0);
1025: }
1026:
1027: int
1028: can_expand_path(struct sftp_conn *conn)
1029: {
1030: return (conn->exts & SFTP_EXT_PATH_EXPAND) != 0;
1031: }
1032:
1033: char *
1034: do_expand_path(struct sftp_conn *conn, const char *path)
1035: {
1036: if (!can_expand_path(conn)) {
1037: debug3_f("no server support, fallback to realpath");
1038: return do_realpath_expand(conn, path, 0);
1039: }
1040: return do_realpath_expand(conn, path, 1);
1.1 djm 1041: }
1042:
1043: int
1.116 djm 1044: do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath,
1.102 djm 1045: int force_legacy)
1.1 djm 1046: {
1.116 djm 1047: struct sshbuf *msg;
1.1 djm 1048: u_int status, id;
1.116 djm 1049: int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
1.1 djm 1050:
1.116 djm 1051: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1052: fatal_f("sshbuf_new failed");
1.1 djm 1053:
1054: /* Send rename request */
1.23 djm 1055: id = conn->msg_id++;
1.102 djm 1056: if (use_ext) {
1.116 djm 1057: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1058: (r = sshbuf_put_u32(msg, id)) != 0 ||
1059: (r = sshbuf_put_cstring(msg,
1060: "posix-rename@openssh.com")) != 0)
1.137 djm 1061: fatal_fr(r, "compose posix-rename");
1.81 djm 1062: } else {
1.116 djm 1063: if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 ||
1064: (r = sshbuf_put_u32(msg, id)) != 0)
1.137 djm 1065: fatal_fr(r, "compose rename");
1.116 djm 1066: }
1067: if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
1068: (r = sshbuf_put_cstring(msg, newpath)) != 0)
1.137 djm 1069: fatal_fr(r, "compose paths");
1.116 djm 1070: send_msg(conn, msg);
1.81 djm 1071: debug3("Sent message %s \"%s\" -> \"%s\"",
1.116 djm 1072: use_ext ? "posix-rename@openssh.com" :
1073: "SSH2_FXP_RENAME", oldpath, newpath);
1074: sshbuf_free(msg);
1.1 djm 1075:
1.93 djm 1076: status = get_status(conn, id);
1.1 djm 1077: if (status != SSH2_FX_OK)
1.23 djm 1078: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 1079: newpath, fx2txt(status));
1080:
1.116 djm 1081: return status == SSH2_FX_OK ? 0 : -1;
1.94 djm 1082: }
1083:
1084: int
1.116 djm 1085: do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.94 djm 1086: {
1.116 djm 1087: struct sshbuf *msg;
1.94 djm 1088: u_int status, id;
1.116 djm 1089: int r;
1.94 djm 1090:
1091: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
1092: error("Server does not support hardlink@openssh.com extension");
1093: return -1;
1094: }
1095:
1.116 djm 1096: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1097: fatal_f("sshbuf_new failed");
1.95 markus 1098:
1099: /* Send link request */
1100: id = conn->msg_id++;
1.116 djm 1101: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1102: (r = sshbuf_put_u32(msg, id)) != 0 ||
1103: (r = sshbuf_put_cstring(msg, "hardlink@openssh.com")) != 0 ||
1104: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
1105: (r = sshbuf_put_cstring(msg, newpath)) != 0)
1.137 djm 1106: fatal_fr(r, "compose");
1.116 djm 1107: send_msg(conn, msg);
1.94 djm 1108: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
1.142 djm 1109: oldpath, newpath);
1.116 djm 1110: sshbuf_free(msg);
1.94 djm 1111:
1112: status = get_status(conn, id);
1113: if (status != SSH2_FX_OK)
1114: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 1115: newpath, fx2txt(status));
1.1 djm 1116:
1.116 djm 1117: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 1118: }
1119:
1120: int
1.116 djm 1121: do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.11 djm 1122: {
1.116 djm 1123: struct sshbuf *msg;
1.11 djm 1124: u_int status, id;
1.116 djm 1125: int r;
1.11 djm 1126:
1.23 djm 1127: if (conn->version < 3) {
1128: error("This server does not support the symlink operation");
1129: return(SSH2_FX_OP_UNSUPPORTED);
1130: }
1131:
1.116 djm 1132: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1133: fatal_f("sshbuf_new failed");
1.11 djm 1134:
1.48 djm 1135: /* Send symlink request */
1.23 djm 1136: id = conn->msg_id++;
1.116 djm 1137: if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 ||
1138: (r = sshbuf_put_u32(msg, id)) != 0 ||
1139: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
1140: (r = sshbuf_put_cstring(msg, newpath)) != 0)
1.137 djm 1141: fatal_fr(r, "compose");
1.116 djm 1142: send_msg(conn, msg);
1.11 djm 1143: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
1144: newpath);
1.116 djm 1145: sshbuf_free(msg);
1.11 djm 1146:
1.93 djm 1147: status = get_status(conn, id);
1.11 djm 1148: if (status != SSH2_FX_OK)
1.36 markus 1149: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 1150: newpath, fx2txt(status));
1.11 djm 1151:
1.116 djm 1152: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 1153: }
1154:
1.107 djm 1155: int
1.116 djm 1156: do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len)
1.107 djm 1157: {
1.116 djm 1158: struct sshbuf *msg;
1.107 djm 1159: u_int status, id;
1.116 djm 1160: int r;
1.107 djm 1161:
1162: /* Silently return if the extension is not supported */
1163: if ((conn->exts & SFTP_EXT_FSYNC) == 0)
1164: return -1;
1165:
1166: /* Send fsync request */
1.116 djm 1167: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1168: fatal_f("sshbuf_new failed");
1.107 djm 1169: id = conn->msg_id++;
1.116 djm 1170: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1171: (r = sshbuf_put_u32(msg, id)) != 0 ||
1172: (r = sshbuf_put_cstring(msg, "fsync@openssh.com")) != 0 ||
1173: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1.137 djm 1174: fatal_fr(r, "compose");
1.116 djm 1175: send_msg(conn, msg);
1.107 djm 1176: debug3("Sent message fsync@openssh.com I:%u", id);
1.116 djm 1177: sshbuf_free(msg);
1.107 djm 1178:
1179: status = get_status(conn, id);
1180: if (status != SSH2_FX_OK)
1181: error("Couldn't sync file: %s", fx2txt(status));
1182:
1.129 djm 1183: return status == SSH2_FX_OK ? 0 : -1;
1.107 djm 1184: }
1185:
1.78 chl 1186: #ifdef notyet
1.11 djm 1187: char *
1.116 djm 1188: do_readlink(struct sftp_conn *conn, const char *path)
1.11 djm 1189: {
1.116 djm 1190: struct sshbuf *msg;
1191: u_int expected_id, count, id;
1.11 djm 1192: char *filename, *longname;
1.116 djm 1193: Attrib a;
1194: u_char type;
1195: int r;
1.11 djm 1196:
1.23 djm 1197: expected_id = id = conn->msg_id++;
1.93 djm 1198: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 1199:
1.116 djm 1200: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1201: fatal_f("sshbuf_new failed");
1.11 djm 1202:
1.116 djm 1203: get_msg(conn, msg);
1204: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1205: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 1206: fatal_fr(r, "parse");
1.11 djm 1207:
1208: if (id != expected_id)
1.33 deraadt 1209: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 1210:
1211: if (type == SSH2_FXP_STATUS) {
1.116 djm 1212: u_int status;
1.11 djm 1213:
1.116 djm 1214: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 1215: fatal_fr(r, "parse status");
1.11 djm 1216: error("Couldn't readlink: %s", fx2txt(status));
1.116 djm 1217: sshbuf_free(msg);
1.11 djm 1218: return(NULL);
1219: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 1220: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 1221: SSH2_FXP_NAME, type);
1222:
1.116 djm 1223: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1.137 djm 1224: fatal_fr(r, "parse count");
1.11 djm 1225: if (count != 1)
1226: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
1227:
1.116 djm 1228: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
1229: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
1230: (r = decode_attrib(msg, &a)) != 0)
1.137 djm 1231: fatal_fr(r, "parse filenames/attrib");
1.11 djm 1232:
1233: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
1234:
1.98 djm 1235: free(longname);
1.11 djm 1236:
1.116 djm 1237: sshbuf_free(msg);
1.11 djm 1238:
1.116 djm 1239: return filename;
1.82 djm 1240: }
1241: #endif
1242:
1243: int
1.84 dtucker 1244: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 1245: int quiet)
1246: {
1.116 djm 1247: struct sshbuf *msg;
1.82 djm 1248: u_int id;
1.116 djm 1249: int r;
1.82 djm 1250:
1251: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
1252: error("Server does not support statvfs@openssh.com extension");
1253: return -1;
1254: }
1255:
1256: id = conn->msg_id++;
1257:
1.116 djm 1258: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1259: fatal_f("sshbuf_new failed");
1.116 djm 1260: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1261: (r = sshbuf_put_u32(msg, id)) != 0 ||
1262: (r = sshbuf_put_cstring(msg, "statvfs@openssh.com")) != 0 ||
1263: (r = sshbuf_put_cstring(msg, path)) != 0)
1.137 djm 1264: fatal_fr(r, "compose");
1.116 djm 1265: send_msg(conn, msg);
1266: sshbuf_free(msg);
1.82 djm 1267:
1.93 djm 1268: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 1269: }
1270:
1271: #ifdef notyet
1272: int
1.116 djm 1273: do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.84 dtucker 1274: struct sftp_statvfs *st, int quiet)
1.82 djm 1275: {
1.116 djm 1276: struct sshbuf *msg;
1.82 djm 1277: u_int id;
1278:
1279: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
1280: error("Server does not support fstatvfs@openssh.com extension");
1281: return -1;
1282: }
1283:
1284: id = conn->msg_id++;
1285:
1.116 djm 1286: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1287: fatal_f("sshbuf_new failed");
1.116 djm 1288: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1289: (r = sshbuf_put_u32(msg, id)) != 0 ||
1290: (r = sshbuf_put_cstring(msg, "fstatvfs@openssh.com")) != 0 ||
1291: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1.137 djm 1292: fatal_fr(r, "compose");
1.116 djm 1293: send_msg(conn, msg);
1294: sshbuf_free(msg);
1.82 djm 1295:
1.93 djm 1296: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 1297: }
1.78 chl 1298: #endif
1.1 djm 1299:
1.131 djm 1300: int
1301: do_lsetstat(struct sftp_conn *conn, const char *path, Attrib *a)
1302: {
1303: struct sshbuf *msg;
1304: u_int status, id;
1305: int r;
1306:
1307: if ((conn->exts & SFTP_EXT_LSETSTAT) == 0) {
1308: error("Server does not support lsetstat@openssh.com extension");
1309: return -1;
1310: }
1311:
1312: id = conn->msg_id++;
1313: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1314: fatal_f("sshbuf_new failed");
1.131 djm 1315: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1316: (r = sshbuf_put_u32(msg, id)) != 0 ||
1317: (r = sshbuf_put_cstring(msg, "lsetstat@openssh.com")) != 0 ||
1318: (r = sshbuf_put_cstring(msg, path)) != 0 ||
1319: (r = encode_attrib(msg, a)) != 0)
1.137 djm 1320: fatal_fr(r, "compose");
1.131 djm 1321: send_msg(conn, msg);
1322: sshbuf_free(msg);
1323:
1324: status = get_status(conn, id);
1325: if (status != SSH2_FX_OK)
1326: error("Couldn't setstat on \"%s\": %s", path,
1327: fx2txt(status));
1328:
1329: return status == SSH2_FX_OK ? 0 : -1;
1330: }
1331:
1.21 djm 1332: static void
1.93 djm 1333: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
1.116 djm 1334: u_int len, const u_char *handle, u_int handle_len)
1.21 djm 1335: {
1.116 djm 1336: struct sshbuf *msg;
1337: int r;
1.28 markus 1338:
1.116 djm 1339: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1340: fatal_f("sshbuf_new failed");
1.116 djm 1341: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 ||
1342: (r = sshbuf_put_u32(msg, id)) != 0 ||
1343: (r = sshbuf_put_string(msg, handle, handle_len)) != 0 ||
1344: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1345: (r = sshbuf_put_u32(msg, len)) != 0)
1.137 djm 1346: fatal_fr(r, "compose");
1.116 djm 1347: send_msg(conn, msg);
1348: sshbuf_free(msg);
1.28 markus 1349: }
1.21 djm 1350:
1.144 djm 1351: static int
1352: send_open(struct sftp_conn *conn, const char *path, const char *tag,
1353: u_int openmode, Attrib *a, u_char **handlep, size_t *handle_lenp)
1354: {
1355: Attrib junk;
1356: u_char *handle;
1357: size_t handle_len;
1358: struct sshbuf *msg;
1359: int r;
1360: u_int id;
1361:
1362: *handlep = NULL;
1363: *handle_lenp = 0;
1364:
1365: if (a == NULL) {
1366: attrib_clear(&junk); /* Send empty attributes */
1367: a = &junk;
1368: }
1369: /* Send open request */
1370: if ((msg = sshbuf_new()) == NULL)
1371: fatal_f("sshbuf_new failed");
1372: id = conn->msg_id++;
1373: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1374: (r = sshbuf_put_u32(msg, id)) != 0 ||
1375: (r = sshbuf_put_cstring(msg, path)) != 0 ||
1376: (r = sshbuf_put_u32(msg, openmode)) != 0 ||
1377: (r = encode_attrib(msg, a)) != 0)
1378: fatal_fr(r, "compose %s open", tag);
1379: send_msg(conn, msg);
1380: sshbuf_free(msg);
1381: debug3("Sent %s message SSH2_FXP_OPEN I:%u P:%s M:0x%04x",
1382: tag, id, path, openmode);
1383: if ((handle = get_handle(conn, id, &handle_len,
1384: "%s open(\"%s\")", tag, path)) == NULL)
1385: return -1;
1386: /* success */
1387: *handlep = handle;
1388: *handle_lenp = handle_len;
1389: return 0;
1390: }
1391:
1.153 djm 1392: static const char *
1393: progress_meter_path(const char *path)
1394: {
1395: const char *progresspath;
1396:
1397: if ((progresspath = strrchr(path, '/')) == NULL)
1398: return path;
1399: progresspath++;
1400: if (*progresspath == '\0')
1401: return path;
1402: return progresspath;
1403: }
1404:
1.1 djm 1405: int
1.116 djm 1406: do_download(struct sftp_conn *conn, const char *remote_path,
1407: const char *local_path, Attrib *a, int preserve_flag, int resume_flag,
1408: int fsync_flag)
1.1 djm 1409: {
1.116 djm 1410: struct sshbuf *msg;
1411: u_char *handle;
1412: int local_fd = -1, write_error;
1.134 djm 1413: int read_error, write_errno, lmodified = 0, reordered = 0, r;
1.101 djm 1414: u_int64_t offset = 0, size, highwater;
1.116 djm 1415: u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK;
1.39 fgsch 1416: off_t progress_counter;
1.116 djm 1417: size_t handle_len;
1.101 djm 1418: struct stat st;
1.146 djm 1419: struct requests requests;
1.21 djm 1420: struct request *req;
1.116 djm 1421: u_char type;
1.21 djm 1422:
1423: TAILQ_INIT(&requests);
1.1 djm 1424:
1.89 djm 1425: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1426: return -1;
1.1 djm 1427:
1.86 djm 1428: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1429: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1430: mode = a->perm & 0777;
1.1 djm 1431: else
1432: mode = 0666;
1433:
1.14 djm 1434: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1435: (!S_ISREG(a->perm))) {
1436: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1437: return(-1);
1438: }
1439:
1.21 djm 1440: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1441: size = a->size;
1442: else
1443: size = 0;
1444:
1.141 djm 1445: buflen = conn->download_buflen;
1.1 djm 1446:
1447: /* Send open request */
1.144 djm 1448: if (send_open(conn, remote_path, "remote", SSH2_FXF_READ, NULL,
1449: &handle, &handle_len) != 0)
1450: return -1;
1.1 djm 1451:
1.105 djm 1452: local_fd = open(local_path,
1453: O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
1.23 djm 1454: if (local_fd == -1) {
1455: error("Couldn't open local file \"%s\" for writing: %s",
1456: local_path, strerror(errno));
1.101 djm 1457: goto fail;
1458: }
1459: offset = highwater = 0;
1.105 djm 1460: if (resume_flag) {
1.101 djm 1461: if (fstat(local_fd, &st) == -1) {
1462: error("Unable to stat local file \"%s\": %s",
1463: local_path, strerror(errno));
1464: goto fail;
1465: }
1.113 djm 1466: if (st.st_size < 0) {
1467: error("\"%s\" has negative size", local_path);
1468: goto fail;
1469: }
1470: if ((u_int64_t)st.st_size > size) {
1.101 djm 1471: error("Unable to resume download of \"%s\": "
1472: "local file is larger than remote", local_path);
1473: fail:
1474: do_close(conn, handle, handle_len);
1475: free(handle);
1.110 djm 1476: if (local_fd != -1)
1477: close(local_fd);
1.101 djm 1478: return -1;
1479: }
1480: offset = highwater = st.st_size;
1.23 djm 1481: }
1482:
1.1 djm 1483: /* Read from remote and write to local */
1.101 djm 1484: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1485: max_req = 1;
1.101 djm 1486: progress_counter = offset;
1.39 fgsch 1487:
1.153 djm 1488: if (showprogress && size != 0) {
1489: start_progress_meter(progress_meter_path(remote_path),
1490: size, &progress_counter);
1491: }
1.39 fgsch 1492:
1.144 djm 1493: if ((msg = sshbuf_new()) == NULL)
1494: fatal_f("sshbuf_new failed");
1495:
1.21 djm 1496: while (num_req > 0 || max_req > 0) {
1.116 djm 1497: u_char *data;
1498: size_t len;
1.1 djm 1499:
1.49 djm 1500: /*
1.51 deraadt 1501: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1502: * allow outstanding requests to drain gracefully
1503: */
1504: if (interrupted) {
1505: if (num_req == 0) /* If we haven't started yet... */
1506: break;
1507: max_req = 0;
1508: }
1509:
1.21 djm 1510: /* Send some more requests */
1511: while (num_req < max_req) {
1.28 markus 1512: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1513: (unsigned long long)offset,
1514: (unsigned long long)offset + buflen - 1,
1515: num_req, max_req);
1.151 djm 1516: req = request_enqueue(&requests, conn->msg_id++,
1517: buflen, offset);
1.21 djm 1518: offset += buflen;
1519: num_req++;
1.93 djm 1520: send_read_request(conn, req->id, req->offset,
1.21 djm 1521: req->len, handle, handle_len);
1522: }
1.1 djm 1523:
1.116 djm 1524: sshbuf_reset(msg);
1525: get_msg(conn, msg);
1526: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1527: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 1528: fatal_fr(r, "parse");
1.33 deraadt 1529: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1530:
1531: /* Find the request in our queue */
1.151 djm 1532: if ((req = request_find(&requests, id)) == NULL)
1.21 djm 1533: fatal("Unexpected reply %u", id);
1534:
1535: switch (type) {
1536: case SSH2_FXP_STATUS:
1.116 djm 1537: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 1538: fatal_fr(r, "parse status");
1.21 djm 1539: if (status != SSH2_FX_EOF)
1540: read_error = 1;
1541: max_req = 0;
1542: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1543: free(req);
1.21 djm 1544: num_req--;
1545: break;
1546: case SSH2_FXP_DATA:
1.116 djm 1547: if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
1.137 djm 1548: fatal_fr(r, "parse data");
1.26 itojun 1549: debug3("Received data %llu -> %llu",
1.28 markus 1550: (unsigned long long)req->offset,
1.26 itojun 1551: (unsigned long long)req->offset + len - 1);
1.21 djm 1552: if (len > req->len)
1553: fatal("Received more data than asked for "
1.116 djm 1554: "%zu > %zu", len, req->len);
1.134 djm 1555: lmodified = 1;
1.21 djm 1556: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1557: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1558: !write_error) {
1559: write_errno = errno;
1560: write_error = 1;
1561: max_req = 0;
1562: }
1.101 djm 1563: else if (!reordered && req->offset <= highwater)
1564: highwater = req->offset + len;
1565: else if (!reordered && req->offset > highwater)
1566: reordered = 1;
1.39 fgsch 1567: progress_counter += len;
1.98 djm 1568: free(data);
1.1 djm 1569:
1.21 djm 1570: if (len == req->len) {
1571: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1572: free(req);
1.21 djm 1573: num_req--;
1574: } else {
1575: /* Resend the request for the missing data */
1576: debug3("Short data block, re-requesting "
1.26 itojun 1577: "%llu -> %llu (%2d)",
1.28 markus 1578: (unsigned long long)req->offset + len,
1.27 itojun 1579: (unsigned long long)req->offset +
1580: req->len - 1, num_req);
1.23 djm 1581: req->id = conn->msg_id++;
1.21 djm 1582: req->len -= len;
1583: req->offset += len;
1.93 djm 1584: send_read_request(conn, req->id,
1.23 djm 1585: req->offset, req->len, handle, handle_len);
1.21 djm 1586: /* Reduce the request size */
1587: if (len < buflen)
1.125 deraadt 1588: buflen = MAXIMUM(MIN_READ_SIZE, len);
1.21 djm 1589: }
1590: if (max_req > 0) { /* max_req = 0 iff EOF received */
1591: if (size > 0 && offset > size) {
1592: /* Only one request at a time
1593: * after the expected EOF */
1594: debug3("Finish at %llu (%2d)",
1.26 itojun 1595: (unsigned long long)offset,
1596: num_req);
1.21 djm 1597: max_req = 1;
1.136 djm 1598: } else if (max_req < conn->num_requests) {
1.21 djm 1599: ++max_req;
1600: }
1.1 djm 1601: }
1.21 djm 1602: break;
1603: default:
1.33 deraadt 1604: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1605: SSH2_FXP_DATA, type);
1606: }
1.21 djm 1607: }
1.1 djm 1608:
1.39 fgsch 1609: if (showprogress && size)
1610: stop_progress_meter();
1611:
1.21 djm 1612: /* Sanity check */
1613: if (TAILQ_FIRST(&requests) != NULL)
1614: fatal("Transfer complete, but requests still in queue");
1.101 djm 1615: /* Truncate at highest contiguous point to avoid holes on interrupt */
1616: if (read_error || write_error || interrupted) {
1.105 djm 1617: if (reordered && resume_flag) {
1.101 djm 1618: error("Unable to resume download of \"%s\": "
1619: "server reordered requests", local_path);
1620: }
1621: debug("truncating at %llu", (unsigned long long)highwater);
1.120 djm 1622: if (ftruncate(local_fd, highwater) == -1)
1623: error("ftruncate \"%s\": %s", local_path,
1624: strerror(errno));
1.101 djm 1625: }
1.21 djm 1626: if (read_error) {
1.28 markus 1627: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1628: remote_path, fx2txt(status));
1.103 djm 1629: status = -1;
1.23 djm 1630: do_close(conn, handle, handle_len);
1.21 djm 1631: } else if (write_error) {
1632: error("Couldn't write to \"%s\": %s", local_path,
1633: strerror(write_errno));
1.116 djm 1634: status = SSH2_FX_FAILURE;
1.23 djm 1635: do_close(conn, handle, handle_len);
1.21 djm 1636: } else {
1.116 djm 1637: if (do_close(conn, handle, handle_len) != 0 || interrupted)
1638: status = SSH2_FX_FAILURE;
1639: else
1640: status = SSH2_FX_OK;
1.21 djm 1641: /* Override umask and utimes if asked */
1.105 djm 1642: if (preserve_flag && fchmod(local_fd, mode) == -1)
1.21 djm 1643: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1644: strerror(errno));
1.105 djm 1645: if (preserve_flag &&
1646: (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1.21 djm 1647: struct timeval tv[2];
1648: tv[0].tv_sec = a->atime;
1649: tv[1].tv_sec = a->mtime;
1650: tv[0].tv_usec = tv[1].tv_usec = 0;
1651: if (utimes(local_path, tv) == -1)
1652: error("Can't set times on \"%s\": %s",
1.37 deraadt 1653: local_path, strerror(errno));
1.1 djm 1654: }
1.134 djm 1655: if (resume_flag && !lmodified)
1656: logit("File \"%s\" was not modified", local_path);
1657: else if (fsync_flag) {
1.107 djm 1658: debug("syncing \"%s\"", local_path);
1659: if (fsync(local_fd) == -1)
1660: error("Couldn't sync file \"%s\": %s",
1661: local_path, strerror(errno));
1662: }
1.10 djm 1663: }
1.5 djm 1664: close(local_fd);
1.116 djm 1665: sshbuf_free(msg);
1.98 djm 1666: free(handle);
1.23 djm 1667:
1.129 djm 1668: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1669: }
1670:
1.89 djm 1671: static int
1.116 djm 1672: download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1673: int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
1.150 djm 1674: int resume_flag, int fsync_flag, int follow_link_flag)
1.89 djm 1675: {
1676: int i, ret = 0;
1677: SFTP_DIRENT **dir_entries;
1.130 djm 1678: char *filename, *new_src = NULL, *new_dst = NULL;
1.138 dtucker 1679: mode_t mode = 0777, tmpmode = mode;
1.89 djm 1680:
1681: if (depth >= MAX_DIR_DEPTH) {
1682: error("Maximum directory depth exceeded: %d levels", depth);
1683: return -1;
1684: }
1685:
1686: if (dirattrib == NULL &&
1687: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1688: error("Unable to stat remote directory \"%s\"", src);
1689: return -1;
1690: }
1691: if (!S_ISDIR(dirattrib->perm)) {
1692: error("\"%s\" is not a directory", src);
1693: return -1;
1694: }
1.147 djm 1695: if (print_flag && print_flag != SFTP_PROGRESS_ONLY)
1.124 schwarze 1696: mprintf("Retrieving %s\n", src);
1.89 djm 1697:
1.138 dtucker 1698: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
1.89 djm 1699: mode = dirattrib->perm & 01777;
1.138 dtucker 1700: tmpmode = mode | (S_IWUSR|S_IXUSR);
1701: } else {
1.89 djm 1702: debug("Server did not send permissions for "
1703: "directory \"%s\"", dst);
1704: }
1705:
1.138 dtucker 1706: if (mkdir(dst, tmpmode) == -1 && errno != EEXIST) {
1.89 djm 1707: error("mkdir %s: %s", dst, strerror(errno));
1708: return -1;
1709: }
1710:
1711: if (do_readdir(conn, src, &dir_entries) == -1) {
1712: error("%s: Failed to get directory contents", src);
1713: return -1;
1714: }
1715:
1716: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1.130 djm 1717: free(new_dst);
1718: free(new_src);
1719:
1.89 djm 1720: filename = dir_entries[i]->filename;
1721: new_dst = path_append(dst, filename);
1722: new_src = path_append(src, filename);
1723:
1724: if (S_ISDIR(dir_entries[i]->a.perm)) {
1725: if (strcmp(filename, ".") == 0 ||
1726: strcmp(filename, "..") == 0)
1727: continue;
1728: if (download_dir_internal(conn, new_src, new_dst,
1.105 djm 1729: depth + 1, &(dir_entries[i]->a), preserve_flag,
1.150 djm 1730: print_flag, resume_flag,
1731: fsync_flag, follow_link_flag) == -1)
1.89 djm 1732: ret = -1;
1.150 djm 1733: } else if (S_ISREG(dir_entries[i]->a.perm) ||
1734: (follow_link_flag && S_ISLNK(dir_entries[i]->a.perm))) {
1735: /*
1736: * If this is a symlink then don't send the link's
1737: * Attrib. do_download() will do a FXP_STAT operation
1738: * and get the link target's attributes.
1739: */
1.89 djm 1740: if (do_download(conn, new_src, new_dst,
1.150 djm 1741: S_ISLNK(dir_entries[i]->a.perm) ? NULL :
1742: &(dir_entries[i]->a),
1743: preserve_flag, resume_flag, fsync_flag) == -1) {
1.89 djm 1744: error("Download of file %s to %s failed",
1745: new_src, new_dst);
1746: ret = -1;
1747: }
1748: } else
1749: logit("%s: not a regular file\n", new_src);
1750:
1751: }
1.130 djm 1752: free(new_dst);
1753: free(new_src);
1.89 djm 1754:
1.105 djm 1755: if (preserve_flag) {
1.89 djm 1756: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1757: struct timeval tv[2];
1758: tv[0].tv_sec = dirattrib->atime;
1759: tv[1].tv_sec = dirattrib->mtime;
1760: tv[0].tv_usec = tv[1].tv_usec = 0;
1761: if (utimes(dst, tv) == -1)
1762: error("Can't set times on \"%s\": %s",
1763: dst, strerror(errno));
1764: } else
1765: debug("Server did not send times for directory "
1766: "\"%s\"", dst);
1767: }
1768:
1.138 dtucker 1769: if (mode != tmpmode && chmod(dst, mode) == -1)
1770: error("Can't set final mode on \"%s\": %s", dst,
1771: strerror(errno));
1772:
1.89 djm 1773: free_sftp_dirents(dir_entries);
1774:
1775: return ret;
1776: }
1777:
1778: int
1.116 djm 1779: download_dir(struct sftp_conn *conn, const char *src, const char *dst,
1780: Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
1.150 djm 1781: int fsync_flag, int follow_link_flag)
1.89 djm 1782: {
1783: char *src_canon;
1784: int ret;
1785:
1786: if ((src_canon = do_realpath(conn, src)) == NULL) {
1.107 djm 1787: error("Unable to canonicalize path \"%s\"", src);
1.89 djm 1788: return -1;
1789: }
1790:
1.105 djm 1791: ret = download_dir_internal(conn, src_canon, dst, 0,
1.150 djm 1792: dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag,
1793: follow_link_flag);
1.98 djm 1794: free(src_canon);
1.89 djm 1795: return ret;
1796: }
1797:
1.1 djm 1798: int
1.116 djm 1799: do_upload(struct sftp_conn *conn, const char *local_path,
1800: const char *remote_path, int preserve_flag, int resume, int fsync_flag)
1.1 djm 1801: {
1.116 djm 1802: int r, local_fd;
1803: u_int status = SSH2_FX_OK;
1804: u_int id;
1805: u_char type;
1.100 dtucker 1806: off_t offset, progress_counter;
1.116 djm 1807: u_char *handle, *data;
1808: struct sshbuf *msg;
1.1 djm 1809: struct stat sb;
1.115 logan 1810: Attrib a, *c = NULL;
1.21 djm 1811: u_int32_t startid;
1812: u_int32_t ackid;
1.151 djm 1813: struct request *ack = NULL;
1814: struct requests acks;
1.116 djm 1815: size_t handle_len;
1.22 djm 1816:
1817: TAILQ_INIT(&acks);
1.1 djm 1818:
1.156 deraadt 1819: if ((local_fd = open(local_path, O_RDONLY)) == -1) {
1.1 djm 1820: error("Couldn't open local file \"%s\" for reading: %s",
1821: local_path, strerror(errno));
1822: return(-1);
1823: }
1824: if (fstat(local_fd, &sb) == -1) {
1825: error("Couldn't fstat local file \"%s\": %s",
1826: local_path, strerror(errno));
1.41 djm 1827: close(local_fd);
1828: return(-1);
1829: }
1830: if (!S_ISREG(sb.st_mode)) {
1831: error("%s is not a regular file", local_path);
1.1 djm 1832: close(local_fd);
1833: return(-1);
1834: }
1835: stat_to_attrib(&sb, &a);
1836:
1837: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1838: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1839: a.perm &= 0777;
1.105 djm 1840: if (!preserve_flag)
1.1 djm 1841: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1842:
1.115 logan 1843: if (resume) {
1844: /* Get remote file size if it exists */
1845: if ((c = do_stat(conn, remote_path, 0)) == NULL) {
1.122 djm 1846: close(local_fd);
1.115 logan 1847: return -1;
1848: }
1849:
1850: if ((off_t)c->size >= sb.st_size) {
1851: error("destination file bigger or same size as "
1.142 djm 1852: "source file");
1.115 logan 1853: close(local_fd);
1854: return -1;
1855: }
1856:
1857: if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
1858: close(local_fd);
1859: return -1;
1860: }
1861: }
1862:
1.1 djm 1863: /* Send open request */
1.144 djm 1864: if (send_open(conn, remote_path, "dest", SSH2_FXF_WRITE|SSH2_FXF_CREAT|
1865: (resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC),
1866: &a, &handle, &handle_len) != 0) {
1.1 djm 1867: close(local_fd);
1.80 djm 1868: return -1;
1.1 djm 1869: }
1870:
1.144 djm 1871: id = conn->msg_id;
1.21 djm 1872: startid = ackid = id + 1;
1.141 djm 1873: data = xmalloc(conn->upload_buflen);
1.20 djm 1874:
1.1 djm 1875: /* Read from local and write to remote */
1.115 logan 1876: offset = progress_counter = (resume ? c->size : 0);
1.153 djm 1877: if (showprogress) {
1878: start_progress_meter(progress_meter_path(local_path),
1879: sb.st_size, &progress_counter);
1880: }
1.39 fgsch 1881:
1.144 djm 1882: if ((msg = sshbuf_new()) == NULL)
1883: fatal_f("sshbuf_new failed");
1.19 deraadt 1884: for (;;) {
1.1 djm 1885: int len;
1886:
1887: /*
1.51 deraadt 1888: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1889: * thus losing the last block of the file.
1.51 deraadt 1890: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1891: * server to drain.
1.1 djm 1892: */
1.80 djm 1893: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1894: len = 0;
1895: else do
1.141 djm 1896: len = read(local_fd, data, conn->upload_buflen);
1.1 djm 1897: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1898:
1899: if (len == -1)
1900: fatal("Couldn't read from \"%s\": %s", local_path,
1901: strerror(errno));
1.21 djm 1902:
1903: if (len != 0) {
1.151 djm 1904: ack = request_enqueue(&acks, ++id, len, offset);
1.116 djm 1905: sshbuf_reset(msg);
1906: if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
1907: (r = sshbuf_put_u32(msg, ack->id)) != 0 ||
1908: (r = sshbuf_put_string(msg, handle,
1909: handle_len)) != 0 ||
1910: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1911: (r = sshbuf_put_string(msg, data, len)) != 0)
1.137 djm 1912: fatal_fr(r, "compose");
1.116 djm 1913: send_msg(conn, msg);
1.33 deraadt 1914: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1915: id, (unsigned long long)offset, len);
1.22 djm 1916: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1917: break;
1918:
1.22 djm 1919: if (ack == NULL)
1920: fatal("Unexpected ACK %u", id);
1921:
1.28 markus 1922: if (id == startid || len == 0 ||
1.23 djm 1923: id - ackid >= conn->num_requests) {
1.116 djm 1924: u_int rid;
1.31 djm 1925:
1.116 djm 1926: sshbuf_reset(msg);
1927: get_msg(conn, msg);
1928: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1929: (r = sshbuf_get_u32(msg, &rid)) != 0)
1.137 djm 1930: fatal_fr(r, "parse");
1.22 djm 1931:
1932: if (type != SSH2_FXP_STATUS)
1933: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1934: "got %d", SSH2_FXP_STATUS, type);
1935:
1.116 djm 1936: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 1937: fatal_fr(r, "parse status");
1.116 djm 1938: debug3("SSH2_FXP_STATUS %u", status);
1.22 djm 1939:
1940: /* Find the request in our queue */
1.151 djm 1941: if ((ack = request_find(&acks, rid)) == NULL)
1.116 djm 1942: fatal("Can't find request for ID %u", rid);
1.22 djm 1943: TAILQ_REMOVE(&acks, ack, tq);
1.151 djm 1944: debug3("In write loop, ack for %u %zu bytes at %lld",
1945: ack->id, ack->len, (unsigned long long)ack->offset);
1.21 djm 1946: ++ackid;
1.100 dtucker 1947: progress_counter += ack->len;
1.98 djm 1948: free(ack);
1.1 djm 1949: }
1950: offset += len;
1.77 djm 1951: if (offset < 0)
1.137 djm 1952: fatal_f("offset < 0");
1.1 djm 1953: }
1.116 djm 1954: sshbuf_free(msg);
1.80 djm 1955:
1.39 fgsch 1956: if (showprogress)
1957: stop_progress_meter();
1.98 djm 1958: free(data);
1.1 djm 1959:
1.80 djm 1960: if (status != SSH2_FX_OK) {
1961: error("Couldn't write to remote file \"%s\": %s",
1962: remote_path, fx2txt(status));
1.116 djm 1963: status = SSH2_FX_FAILURE;
1.80 djm 1964: }
1965:
1.1 djm 1966: if (close(local_fd) == -1) {
1967: error("Couldn't close local file \"%s\": %s", local_path,
1968: strerror(errno));
1.116 djm 1969: status = SSH2_FX_FAILURE;
1.1 djm 1970: }
1971:
1.10 djm 1972: /* Override umask and utimes if asked */
1.105 djm 1973: if (preserve_flag)
1.23 djm 1974: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1975:
1.107 djm 1976: if (fsync_flag)
1977: (void)do_fsync(conn, handle, handle_len);
1978:
1.121 djm 1979: if (do_close(conn, handle, handle_len) != 0)
1.116 djm 1980: status = SSH2_FX_FAILURE;
1981:
1.98 djm 1982: free(handle);
1.5 djm 1983:
1.116 djm 1984: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1985: }
1.89 djm 1986:
1987: static int
1.116 djm 1988: upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1.150 djm 1989: int depth, int preserve_flag, int print_flag, int resume, int fsync_flag,
1990: int follow_link_flag)
1.89 djm 1991: {
1.116 djm 1992: int ret = 0;
1.89 djm 1993: DIR *dirp;
1994: struct dirent *dp;
1.130 djm 1995: char *filename, *new_src = NULL, *new_dst = NULL;
1.89 djm 1996: struct stat sb;
1.121 djm 1997: Attrib a, *dirattrib;
1.138 dtucker 1998: u_int32_t saved_perm;
1.89 djm 1999:
2000: if (depth >= MAX_DIR_DEPTH) {
2001: error("Maximum directory depth exceeded: %d levels", depth);
2002: return -1;
2003: }
2004:
2005: if (stat(src, &sb) == -1) {
2006: error("Couldn't stat directory \"%s\": %s",
2007: src, strerror(errno));
2008: return -1;
2009: }
2010: if (!S_ISDIR(sb.st_mode)) {
2011: error("\"%s\" is not a directory", src);
2012: return -1;
2013: }
1.147 djm 2014: if (print_flag && print_flag != SFTP_PROGRESS_ONLY)
1.124 schwarze 2015: mprintf("Entering %s\n", src);
1.89 djm 2016:
2017: stat_to_attrib(&sb, &a);
2018: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
2019: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
2020: a.perm &= 01777;
1.105 djm 2021: if (!preserve_flag)
1.89 djm 2022: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 2023:
1.89 djm 2024: /*
1.121 djm 2025: * sftp lacks a portable status value to match errno EEXIST,
2026: * so if we get a failure back then we must check whether
1.138 dtucker 2027: * the path already existed and is a directory. Ensure we can
2028: * write to the directory we create for the duration of the transfer.
1.89 djm 2029: */
1.138 dtucker 2030: saved_perm = a.perm;
2031: a.perm |= (S_IWUSR|S_IXUSR);
1.121 djm 2032: if (do_mkdir(conn, dst, &a, 0) != 0) {
2033: if ((dirattrib = do_stat(conn, dst, 0)) == NULL)
1.89 djm 2034: return -1;
1.121 djm 2035: if (!S_ISDIR(dirattrib->perm)) {
2036: error("\"%s\" exists but is not a directory", dst);
1.89 djm 2037: return -1;
1.121 djm 2038: }
1.89 djm 2039: }
1.138 dtucker 2040: a.perm = saved_perm;
1.89 djm 2041:
2042: if ((dirp = opendir(src)) == NULL) {
2043: error("Failed to open dir \"%s\": %s", src, strerror(errno));
2044: return -1;
2045: }
1.101 djm 2046:
1.89 djm 2047: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
2048: if (dp->d_ino == 0)
2049: continue;
1.130 djm 2050: free(new_dst);
2051: free(new_src);
1.89 djm 2052: filename = dp->d_name;
2053: new_dst = path_append(dst, filename);
2054: new_src = path_append(src, filename);
2055:
1.90 dtucker 2056: if (lstat(new_src, &sb) == -1) {
2057: logit("%s: lstat failed: %s", filename,
2058: strerror(errno));
2059: ret = -1;
2060: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 2061: if (strcmp(filename, ".") == 0 ||
2062: strcmp(filename, "..") == 0)
2063: continue;
2064:
2065: if (upload_dir_internal(conn, new_src, new_dst,
1.115 logan 2066: depth + 1, preserve_flag, print_flag, resume,
1.150 djm 2067: fsync_flag, follow_link_flag) == -1)
1.89 djm 2068: ret = -1;
1.150 djm 2069: } else if (S_ISREG(sb.st_mode) ||
2070: (follow_link_flag && S_ISLNK(sb.st_mode))) {
1.105 djm 2071: if (do_upload(conn, new_src, new_dst,
1.115 logan 2072: preserve_flag, resume, fsync_flag) == -1) {
1.89 djm 2073: error("Uploading of file %s to %s failed!",
2074: new_src, new_dst);
2075: ret = -1;
2076: }
2077: } else
2078: logit("%s: not a regular file\n", filename);
2079: }
1.130 djm 2080: free(new_dst);
2081: free(new_src);
1.89 djm 2082:
2083: do_setstat(conn, dst, &a);
2084:
2085: (void) closedir(dirp);
2086: return ret;
2087: }
2088:
2089: int
1.116 djm 2090: upload_dir(struct sftp_conn *conn, const char *src, const char *dst,
1.150 djm 2091: int preserve_flag, int print_flag, int resume, int fsync_flag,
2092: int follow_link_flag)
1.89 djm 2093: {
2094: char *dst_canon;
2095: int ret;
2096:
2097: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1.107 djm 2098: error("Unable to canonicalize path \"%s\"", dst);
1.89 djm 2099: return -1;
2100: }
2101:
1.106 djm 2102: ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
1.150 djm 2103: print_flag, resume, fsync_flag, follow_link_flag);
1.107 djm 2104:
1.98 djm 2105: free(dst_canon);
1.145 djm 2106: return ret;
2107: }
2108:
2109: static void
2110: handle_dest_replies(struct sftp_conn *to, const char *to_path, int synchronous,
2111: u_int *nreqsp, u_int *write_errorp)
2112: {
2113: struct sshbuf *msg;
2114: u_char type;
2115: u_int id, status;
2116: int r;
2117: struct pollfd pfd;
2118:
2119: if ((msg = sshbuf_new()) == NULL)
2120: fatal_f("sshbuf_new failed");
2121:
2122: /* Try to eat replies from the upload side */
2123: while (*nreqsp > 0) {
2124: debug3_f("%u outstanding replies", *nreqsp);
2125: if (!synchronous) {
2126: /* Bail out if no data is ready to be read */
2127: pfd.fd = to->fd_in;
2128: pfd.events = POLLIN;
2129: if ((r = poll(&pfd, 1, 0)) == -1) {
2130: if (errno == EINTR)
2131: break;
2132: fatal_f("poll: %s", strerror(errno));
2133: } else if (r == 0)
2134: break; /* fd not ready */
2135: }
2136: sshbuf_reset(msg);
2137: get_msg(to, msg);
2138:
2139: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
2140: (r = sshbuf_get_u32(msg, &id)) != 0)
2141: fatal_fr(r, "dest parse");
2142: debug3("Received dest reply T:%u I:%u R:%u", type, id, *nreqsp);
2143: if (type != SSH2_FXP_STATUS) {
2144: fatal_f("Expected SSH2_FXP_STATUS(%d) packet, got %d",
2145: SSH2_FXP_STATUS, type);
2146: }
2147: if ((r = sshbuf_get_u32(msg, &status)) != 0)
2148: fatal_fr(r, "parse dest status");
2149: debug3("dest SSH2_FXP_STATUS %u", status);
2150: if (status != SSH2_FX_OK) {
2151: /* record first error */
2152: if (*write_errorp == 0)
2153: *write_errorp = status;
2154: }
2155: /*
2156: * XXX this doesn't do full reply matching like do_upload and
2157: * so cannot gracefully truncate terminated uploads at a
2158: * high-water mark. ATM the only caller of this function (scp)
2159: * doesn't support transfer resumption, so this doesn't matter
2160: * a whole lot.
2161: *
2162: * To be safe, do_crossload truncates the destination file to
2163: * zero length on upload failure, since we can't trust the
2164: * server not to have reordered replies that could have
2165: * inserted holes where none existed in the source file.
2166: *
2167: * XXX we could get a more accutate progress bar if we updated
2168: * the counter based on the reply from the destination...
2169: */
2170: (*nreqsp)--;
2171: }
2172: debug3_f("done: %u outstanding replies", *nreqsp);
1.157 dtucker 2173: sshbuf_free(msg);
1.145 djm 2174: }
2175:
2176: int
2177: do_crossload(struct sftp_conn *from, struct sftp_conn *to,
2178: const char *from_path, const char *to_path,
2179: Attrib *a, int preserve_flag)
2180: {
2181: struct sshbuf *msg;
1.152 djm 2182: int write_error, read_error, r;
1.145 djm 2183: u_int64_t offset = 0, size;
2184: u_int id, buflen, num_req, max_req, status = SSH2_FX_OK;
2185: u_int num_upload_req;
2186: off_t progress_counter;
2187: u_char *from_handle, *to_handle;
2188: size_t from_handle_len, to_handle_len;
1.146 djm 2189: struct requests requests;
1.145 djm 2190: struct request *req;
2191: u_char type;
2192:
2193: TAILQ_INIT(&requests);
2194:
2195: if (a == NULL && (a = do_stat(from, from_path, 0)) == NULL)
2196: return -1;
2197:
2198: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
2199: (!S_ISREG(a->perm))) {
2200: error("Cannot download non-regular file: %s", from_path);
2201: return(-1);
2202: }
2203: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
2204: size = a->size;
2205: else
2206: size = 0;
2207:
2208: buflen = from->download_buflen;
2209: if (buflen > to->upload_buflen)
2210: buflen = to->upload_buflen;
2211:
2212: /* Send open request to read side */
2213: if (send_open(from, from_path, "origin", SSH2_FXF_READ, NULL,
2214: &from_handle, &from_handle_len) != 0)
2215: return -1;
2216:
2217: /* Send open request to write side */
2218: a->flags &= ~SSH2_FILEXFER_ATTR_SIZE;
2219: a->flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
2220: a->perm &= 0777;
2221: if (!preserve_flag)
2222: a->flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
2223: if (send_open(to, to_path, "dest",
2224: SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC, a,
2225: &to_handle, &to_handle_len) != 0) {
2226: do_close(from, from_handle, from_handle_len);
2227: return -1;
2228: }
2229:
2230: /* Read from remote "from" and write to remote "to" */
2231: offset = 0;
2232: write_error = read_error = num_req = num_upload_req = 0;
2233: max_req = 1;
2234: progress_counter = 0;
2235:
1.153 djm 2236: if (showprogress && size != 0) {
2237: start_progress_meter(progress_meter_path(from_path),
2238: size, &progress_counter);
2239: }
1.145 djm 2240: if ((msg = sshbuf_new()) == NULL)
2241: fatal_f("sshbuf_new failed");
2242: while (num_req > 0 || max_req > 0) {
2243: u_char *data;
2244: size_t len;
2245:
2246: /*
2247: * Simulate EOF on interrupt: stop sending new requests and
2248: * allow outstanding requests to drain gracefully
2249: */
2250: if (interrupted) {
2251: if (num_req == 0) /* If we haven't started yet... */
2252: break;
2253: max_req = 0;
2254: }
2255:
2256: /* Send some more requests */
2257: while (num_req < max_req) {
2258: debug3("Request range %llu -> %llu (%d/%d)",
2259: (unsigned long long)offset,
2260: (unsigned long long)offset + buflen - 1,
2261: num_req, max_req);
1.151 djm 2262: req = request_enqueue(&requests, from->msg_id++,
2263: buflen, offset);
1.145 djm 2264: offset += buflen;
2265: num_req++;
2266: send_read_request(from, req->id, req->offset,
2267: req->len, from_handle, from_handle_len);
2268: }
2269:
2270: /* Try to eat replies from the upload side (nonblocking) */
2271: handle_dest_replies(to, to_path, 0,
2272: &num_upload_req, &write_error);
2273:
2274: sshbuf_reset(msg);
2275: get_msg(from, msg);
2276: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
2277: (r = sshbuf_get_u32(msg, &id)) != 0)
2278: fatal_fr(r, "parse");
2279: debug3("Received origin reply T:%u I:%u R:%d",
2280: type, id, max_req);
2281:
2282: /* Find the request in our queue */
1.151 djm 2283: if ((req = request_find(&requests, id)) == NULL)
1.145 djm 2284: fatal("Unexpected reply %u", id);
2285:
2286: switch (type) {
2287: case SSH2_FXP_STATUS:
2288: if ((r = sshbuf_get_u32(msg, &status)) != 0)
2289: fatal_fr(r, "parse status");
2290: if (status != SSH2_FX_EOF)
2291: read_error = 1;
2292: max_req = 0;
2293: TAILQ_REMOVE(&requests, req, tq);
2294: free(req);
2295: num_req--;
2296: break;
2297: case SSH2_FXP_DATA:
2298: if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
2299: fatal_fr(r, "parse data");
2300: debug3("Received data %llu -> %llu",
2301: (unsigned long long)req->offset,
2302: (unsigned long long)req->offset + len - 1);
2303: if (len > req->len)
2304: fatal("Received more data than asked for "
2305: "%zu > %zu", len, req->len);
2306:
2307: /* Write this chunk out to the destination */
2308: sshbuf_reset(msg);
2309: if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
2310: (r = sshbuf_put_u32(msg, to->msg_id++)) != 0 ||
2311: (r = sshbuf_put_string(msg, to_handle,
2312: to_handle_len)) != 0 ||
2313: (r = sshbuf_put_u64(msg, req->offset)) != 0 ||
2314: (r = sshbuf_put_string(msg, data, len)) != 0)
2315: fatal_fr(r, "compose write");
2316: send_msg(to, msg);
2317: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%zu",
2318: id, (unsigned long long)offset, len);
2319: num_upload_req++;
2320: progress_counter += len;
2321: free(data);
2322:
2323: if (len == req->len) {
2324: TAILQ_REMOVE(&requests, req, tq);
2325: free(req);
2326: num_req--;
2327: } else {
2328: /* Resend the request for the missing data */
2329: debug3("Short data block, re-requesting "
2330: "%llu -> %llu (%2d)",
2331: (unsigned long long)req->offset + len,
2332: (unsigned long long)req->offset +
2333: req->len - 1, num_req);
2334: req->id = from->msg_id++;
2335: req->len -= len;
2336: req->offset += len;
2337: send_read_request(from, req->id,
2338: req->offset, req->len,
2339: from_handle, from_handle_len);
2340: /* Reduce the request size */
2341: if (len < buflen)
2342: buflen = MAXIMUM(MIN_READ_SIZE, len);
2343: }
2344: if (max_req > 0) { /* max_req = 0 iff EOF received */
2345: if (size > 0 && offset > size) {
2346: /* Only one request at a time
2347: * after the expected EOF */
2348: debug3("Finish at %llu (%2d)",
2349: (unsigned long long)offset,
2350: num_req);
2351: max_req = 1;
2352: } else if (max_req < from->num_requests) {
2353: ++max_req;
2354: }
2355: }
2356: break;
2357: default:
2358: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
2359: SSH2_FXP_DATA, type);
2360: }
2361: }
2362:
2363: if (showprogress && size)
2364: stop_progress_meter();
2365:
2366: /* Drain replies from the server (blocking) */
2367: debug3_f("waiting for %u replies from destination", num_upload_req);
2368: handle_dest_replies(to, to_path, 1, &num_upload_req, &write_error);
2369:
2370: /* Sanity check */
2371: if (TAILQ_FIRST(&requests) != NULL)
2372: fatal("Transfer complete, but requests still in queue");
2373: /* Truncate at 0 length on interrupt or error to avoid holes at dest */
2374: if (read_error || write_error || interrupted) {
2375: debug("truncating \"%s\" at 0", to_path);
2376: do_close(to, to_handle, to_handle_len);
2377: free(to_handle);
2378: if (send_open(to, to_path, "dest",
2379: SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC, a,
2380: &to_handle, &to_handle_len) != 0) {
2381: error("truncation failed for \"%s\"", to_path);
2382: to_handle = NULL;
2383: }
2384: }
2385: if (read_error) {
2386: error("Couldn't read from origin file \"%s\" : %s",
2387: from_path, fx2txt(status));
2388: status = -1;
2389: do_close(from, from_handle, from_handle_len);
2390: if (to_handle != NULL)
2391: do_close(to, to_handle, to_handle_len);
2392: } else if (write_error) {
2393: error("Couldn't write to \"%s\": %s",
2394: to_path, fx2txt(write_error));
2395: status = SSH2_FX_FAILURE;
2396: do_close(from, from_handle, from_handle_len);
2397: if (to_handle != NULL)
2398: do_close(to, to_handle, to_handle_len);
2399: } else {
2400: if (do_close(from, from_handle, from_handle_len) != 0 ||
2401: interrupted)
2402: status = -1;
2403: else
2404: status = SSH2_FX_OK;
2405: if (to_handle != NULL) {
2406: /* Need to resend utimes after write */
2407: if (preserve_flag)
2408: do_fsetstat(to, to_handle, to_handle_len, a);
2409: do_close(to, to_handle, to_handle_len);
2410: }
2411: }
2412: sshbuf_free(msg);
2413: free(from_handle);
2414: free(to_handle);
2415:
2416: return status == SSH2_FX_OK ? 0 : -1;
2417: }
2418:
2419: static int
2420: crossload_dir_internal(struct sftp_conn *from, struct sftp_conn *to,
2421: const char *from_path, const char *to_path,
1.150 djm 2422: int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
2423: int follow_link_flag)
1.145 djm 2424: {
2425: int i, ret = 0;
2426: SFTP_DIRENT **dir_entries;
2427: char *filename, *new_from_path = NULL, *new_to_path = NULL;
2428: mode_t mode = 0777;
1.149 djm 2429: Attrib curdir;
1.145 djm 2430:
2431: if (depth >= MAX_DIR_DEPTH) {
2432: error("Maximum directory depth exceeded: %d levels", depth);
2433: return -1;
2434: }
2435:
2436: if (dirattrib == NULL &&
2437: (dirattrib = do_stat(from, from_path, 1)) == NULL) {
2438: error("Unable to stat remote directory \"%s\"", from_path);
2439: return -1;
2440: }
2441: if (!S_ISDIR(dirattrib->perm)) {
2442: error("\"%s\" is not a directory", from_path);
2443: return -1;
2444: }
1.150 djm 2445: if (print_flag && print_flag != SFTP_PROGRESS_ONLY)
1.145 djm 2446: mprintf("Retrieving %s\n", from_path);
2447:
1.149 djm 2448: curdir = *dirattrib; /* dirattrib will be clobbered */
2449: curdir.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
2450: curdir.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
2451: if ((curdir.flags & SSH2_FILEXFER_ATTR_PERMISSIONS) == 0) {
2452: debug("Origin did not send permissions for "
1.145 djm 2453: "directory \"%s\"", to_path);
1.149 djm 2454: curdir.perm = S_IWUSR|S_IXUSR;
2455: curdir.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
1.145 djm 2456: }
1.149 djm 2457: /* We need to be able to write to the directory while we transfer it */
2458: mode = curdir.perm & 01777;
2459: curdir.perm = mode | (S_IWUSR|S_IXUSR);
2460:
2461: /*
2462: * sftp lacks a portable status value to match errno EEXIST,
2463: * so if we get a failure back then we must check whether
2464: * the path already existed and is a directory. Ensure we can
2465: * write to the directory we create for the duration of the transfer.
2466: */
2467: if (do_mkdir(to, to_path, &curdir, 0) != 0) {
2468: if ((dirattrib = do_stat(to, to_path, 0)) == NULL)
2469: return -1;
2470: if (!S_ISDIR(dirattrib->perm)) {
2471: error("\"%s\" exists but is not a directory", to_path);
2472: return -1;
2473: }
2474: }
2475: curdir.perm = mode;
1.145 djm 2476:
2477: if (do_readdir(from, from_path, &dir_entries) == -1) {
2478: error("%s: Failed to get directory contents", from_path);
2479: return -1;
2480: }
2481:
2482: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
2483: free(new_from_path);
2484: free(new_to_path);
2485:
2486: filename = dir_entries[i]->filename;
2487: new_from_path = path_append(from_path, filename);
2488: new_to_path = path_append(to_path, filename);
2489:
2490: if (S_ISDIR(dir_entries[i]->a.perm)) {
2491: if (strcmp(filename, ".") == 0 ||
2492: strcmp(filename, "..") == 0)
2493: continue;
2494: if (crossload_dir_internal(from, to,
2495: new_from_path, new_to_path,
2496: depth + 1, &(dir_entries[i]->a), preserve_flag,
1.150 djm 2497: print_flag, follow_link_flag) == -1)
1.145 djm 2498: ret = -1;
1.150 djm 2499: } else if (S_ISREG(dir_entries[i]->a.perm) ||
2500: (follow_link_flag && S_ISLNK(dir_entries[i]->a.perm))) {
2501: /*
2502: * If this is a symlink then don't send the link's
2503: * Attrib. do_download() will do a FXP_STAT operation
2504: * and get the link target's attributes.
2505: */
1.145 djm 2506: if (do_crossload(from, to, new_from_path, new_to_path,
1.150 djm 2507: S_ISLNK(dir_entries[i]->a.perm) ? NULL :
1.145 djm 2508: &(dir_entries[i]->a), preserve_flag) == -1) {
2509: error("Transfer of file %s to %s failed",
2510: new_from_path, new_to_path);
2511: ret = -1;
2512: }
2513: } else
2514: logit("%s: not a regular file\n", new_from_path);
2515:
2516: }
2517: free(new_to_path);
2518: free(new_from_path);
2519:
1.149 djm 2520: do_setstat(to, to_path, &curdir);
1.145 djm 2521:
2522: free_sftp_dirents(dir_entries);
2523:
2524: return ret;
2525: }
2526:
2527: int
2528: crossload_dir(struct sftp_conn *from, struct sftp_conn *to,
2529: const char *from_path, const char *to_path,
1.150 djm 2530: Attrib *dirattrib, int preserve_flag, int print_flag, int follow_link_flag)
1.145 djm 2531: {
2532: char *from_path_canon;
2533: int ret;
2534:
2535: if ((from_path_canon = do_realpath(from, from_path)) == NULL) {
2536: error("Unable to canonicalize path \"%s\"", from_path);
2537: return -1;
2538: }
2539:
2540: ret = crossload_dir_internal(from, to, from_path_canon, to_path, 0,
1.150 djm 2541: dirattrib, preserve_flag, print_flag, follow_link_flag);
1.145 djm 2542: free(from_path_canon);
1.89 djm 2543: return ret;
2544: }
2545:
2546: char *
1.116 djm 2547: path_append(const char *p1, const char *p2)
1.89 djm 2548: {
2549: char *ret;
2550: size_t len = strlen(p1) + strlen(p2) + 2;
2551:
2552: ret = xmalloc(len);
2553: strlcpy(ret, p1, len);
2554: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
2555: strlcat(ret, "/", len);
2556: strlcat(ret, p2, len);
2557:
2558: return(ret);
1.139 djm 2559: }
2560:
2561: char *
2562: make_absolute(char *p, const char *pwd)
2563: {
2564: char *abs_str;
2565:
2566: /* Derelativise */
2567: if (p && !path_absolute(p)) {
2568: abs_str = path_append(pwd, p);
2569: free(p);
2570: return(abs_str);
2571: } else
2572: return(p);
2573: }
2574:
2575: int
2576: remote_is_dir(struct sftp_conn *conn, const char *path)
2577: {
2578: Attrib *a;
2579:
2580: /* XXX: report errors? */
2581: if ((a = do_stat(conn, path, 1)) == NULL)
2582: return(0);
2583: if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS))
2584: return(0);
2585: return(S_ISDIR(a->perm));
2586: }
2587:
2588:
2589: int
2590: local_is_dir(const char *path)
2591: {
2592: struct stat sb;
2593:
2594: /* XXX: report errors? */
2595: if (stat(path, &sb) == -1)
2596: return(0);
2597:
2598: return(S_ISDIR(sb.st_mode));
2599: }
2600:
2601: /* Check whether path returned from glob(..., GLOB_MARK, ...) is a directory */
2602: int
2603: globpath_is_dir(const char *pathname)
2604: {
2605: size_t l = strlen(pathname);
2606:
2607: return l > 0 && pathname[l - 1] == '/';
1.89 djm 2608: }
2609:
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