Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.141
1.141 ! djm 1: /* $OpenBSD: sftp-client.c,v 1.140 2021/03/10 04:58:45 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:
1.141 ! djm 57: /* Default size of buffer for up/download */
! 58: #define DEFAULT_COPY_BUFLEN 32768
! 59:
! 60: /* Default number of concurrent outstanding requests */
! 61: #define DEFAULT_NUM_REQUESTS 64
! 62:
1.59 david 63: /* Minimum amount of data to read at a time */
1.21 djm 64: #define MIN_READ_SIZE 512
65:
1.89 djm 66: /* Maximum depth to descend in directory trees */
67: #define MAX_DIR_DEPTH 64
68:
1.23 djm 69: struct sftp_conn {
70: int fd_in;
71: int fd_out;
1.141 ! djm 72: u_int download_buflen;
! 73: u_int upload_buflen;
1.23 djm 74: u_int num_requests;
75: u_int version;
76: u_int msg_id;
1.82 djm 77: #define SFTP_EXT_POSIX_RENAME 0x00000001
78: #define SFTP_EXT_STATVFS 0x00000002
79: #define SFTP_EXT_FSTATVFS 0x00000004
1.94 djm 80: #define SFTP_EXT_HARDLINK 0x00000008
1.107 djm 81: #define SFTP_EXT_FSYNC 0x00000010
1.131 djm 82: #define SFTP_EXT_LSETSTAT 0x00000020
1.141 ! djm 83: #define SFTP_EXT_LIMITS 0x00000040
1.81 djm 84: u_int exts;
1.93 djm 85: u_int64_t limit_kbps;
86: struct bwlimit bwlimit_in, bwlimit_out;
1.23 djm 87: };
1.4 djm 88:
1.116 djm 89: static u_char *
90: get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
1.93 djm 91: const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
92:
93: /* ARGSUSED */
94: static int
95: sftpio(void *_bwlimit, size_t amount)
96: {
97: struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
98:
1.133 dtucker 99: refresh_progress_meter(0);
1.132 dtucker 100: if (bwlimit != NULL)
101: bandwidth_limit(bwlimit, amount);
1.93 djm 102: return 0;
103: }
1.88 djm 104:
1.17 itojun 105: static void
1.116 djm 106: send_msg(struct sftp_conn *conn, struct sshbuf *m)
1.1 djm 107: {
1.40 djm 108: u_char mlen[4];
1.65 djm 109: struct iovec iov[2];
1.40 djm 110:
1.116 djm 111: if (sshbuf_len(m) > SFTP_MAX_MSG_LENGTH)
112: fatal("Outbound message too long %zu", sshbuf_len(m));
1.40 djm 113:
114: /* Send length first */
1.116 djm 115: put_u32(mlen, sshbuf_len(m));
1.65 djm 116: iov[0].iov_base = mlen;
117: iov[0].iov_len = sizeof(mlen);
1.116 djm 118: iov[1].iov_base = (u_char *)sshbuf_ptr(m);
119: iov[1].iov_len = sshbuf_len(m);
1.74 deraadt 120:
1.132 dtucker 121: if (atomiciov6(writev, conn->fd_out, iov, 2, sftpio,
122: conn->limit_kbps > 0 ? &conn->bwlimit_out : NULL) !=
1.116 djm 123: sshbuf_len(m) + sizeof(mlen))
1.1 djm 124: fatal("Couldn't send packet: %s", strerror(errno));
125:
1.116 djm 126: sshbuf_reset(m);
1.1 djm 127: }
128:
1.17 itojun 129: static void
1.128 dtucker 130: get_msg_extended(struct sftp_conn *conn, struct sshbuf *m, int initial)
1.1 djm 131: {
1.40 djm 132: u_int msg_len;
1.116 djm 133: u_char *p;
134: int r;
1.1 djm 135:
1.116 djm 136: if ((r = sshbuf_reserve(m, 4, &p)) != 0)
1.137 djm 137: fatal_fr(r, "reserve");
1.132 dtucker 138: if (atomicio6(read, conn->fd_in, p, 4, sftpio,
139: conn->limit_kbps > 0 ? &conn->bwlimit_in : NULL) != 4) {
1.127 djm 140: if (errno == EPIPE || errno == ECONNRESET)
1.54 avsm 141: fatal("Connection closed");
142: else
143: fatal("Couldn't read packet: %s", strerror(errno));
144: }
1.1 djm 145:
1.116 djm 146: if ((r = sshbuf_get_u32(m, &msg_len)) != 0)
1.137 djm 147: fatal_fr(r, "sshbuf_get_u32");
1.128 dtucker 148: if (msg_len > SFTP_MAX_MSG_LENGTH) {
149: do_log2(initial ? SYSLOG_LEVEL_ERROR : SYSLOG_LEVEL_FATAL,
150: "Received message too long %u", msg_len);
151: fatal("Ensure the remote shell produces no output "
152: "for non-interactive sessions.");
153: }
1.1 djm 154:
1.116 djm 155: if ((r = sshbuf_reserve(m, msg_len, &p)) != 0)
1.137 djm 156: fatal_fr(r, "reserve");
1.132 dtucker 157: if (atomicio6(read, conn->fd_in, p, msg_len, sftpio,
158: conn->limit_kbps > 0 ? &conn->bwlimit_in : NULL)
1.93 djm 159: != msg_len) {
1.54 avsm 160: if (errno == EPIPE)
161: fatal("Connection closed");
162: else
163: fatal("Read packet: %s", strerror(errno));
164: }
1.1 djm 165: }
166:
1.17 itojun 167: static void
1.128 dtucker 168: get_msg(struct sftp_conn *conn, struct sshbuf *m)
169: {
170: get_msg_extended(conn, m, 0);
171: }
172:
173: static void
1.116 djm 174: send_string_request(struct sftp_conn *conn, u_int id, u_int code, const char *s,
1.1 djm 175: u_int len)
176: {
1.116 djm 177: struct sshbuf *msg;
178: int r;
1.1 djm 179:
1.116 djm 180: if ((msg = sshbuf_new()) == NULL)
1.137 djm 181: fatal_f("sshbuf_new failed");
1.116 djm 182: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
183: (r = sshbuf_put_u32(msg, id)) != 0 ||
184: (r = sshbuf_put_string(msg, s, len)) != 0)
1.137 djm 185: fatal_fr(r, "compose");
1.116 djm 186: send_msg(conn, msg);
1.93 djm 187: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.116 djm 188: sshbuf_free(msg);
1.1 djm 189: }
190:
1.17 itojun 191: static void
1.93 djm 192: send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
1.116 djm 193: const void *s, u_int len, Attrib *a)
1.1 djm 194: {
1.116 djm 195: struct sshbuf *msg;
196: int r;
1.1 djm 197:
1.116 djm 198: if ((msg = sshbuf_new()) == NULL)
1.137 djm 199: fatal_f("sshbuf_new failed");
1.116 djm 200: if ((r = sshbuf_put_u8(msg, code)) != 0 ||
201: (r = sshbuf_put_u32(msg, id)) != 0 ||
202: (r = sshbuf_put_string(msg, s, len)) != 0 ||
203: (r = encode_attrib(msg, a)) != 0)
1.137 djm 204: fatal_fr(r, "compose");
1.116 djm 205: send_msg(conn, msg);
1.93 djm 206: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.116 djm 207: sshbuf_free(msg);
1.1 djm 208: }
209:
1.17 itojun 210: static u_int
1.93 djm 211: get_status(struct sftp_conn *conn, u_int expected_id)
1.1 djm 212: {
1.116 djm 213: struct sshbuf *msg;
214: u_char type;
215: u_int id, status;
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: get_msg(conn, msg);
221: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
222: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 223: fatal_fr(r, "compose");
1.1 djm 224:
225: if (id != expected_id)
1.33 deraadt 226: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 227: if (type != SSH2_FXP_STATUS)
1.33 deraadt 228: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 229: SSH2_FXP_STATUS, type);
230:
1.116 djm 231: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 232: fatal_fr(r, "parse");
1.116 djm 233: sshbuf_free(msg);
1.1 djm 234:
1.33 deraadt 235: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 236:
1.93 djm 237: return status;
1.1 djm 238: }
239:
1.116 djm 240: static u_char *
241: get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
1.93 djm 242: const char *errfmt, ...)
1.1 djm 243: {
1.116 djm 244: struct sshbuf *msg;
245: u_int id, status;
246: u_char type;
247: u_char *handle;
248: char errmsg[256];
1.88 djm 249: va_list args;
1.116 djm 250: int r;
1.88 djm 251:
252: va_start(args, errfmt);
253: if (errfmt != NULL)
254: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
255: va_end(args);
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, "parse");
1.1 djm 263:
264: if (id != expected_id)
1.88 djm 265: fatal("%s: ID mismatch (%u != %u)",
266: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 267: if (type == SSH2_FXP_STATUS) {
1.116 djm 268: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 269: fatal_fr(r, "parse status");
1.88 djm 270: if (errfmt != NULL)
271: error("%s: %s", errmsg, fx2txt(status));
1.116 djm 272: sshbuf_free(msg);
1.1 djm 273: return(NULL);
274: } else if (type != SSH2_FXP_HANDLE)
1.88 djm 275: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
276: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 277:
1.116 djm 278: if ((r = sshbuf_get_string(msg, &handle, len)) != 0)
1.137 djm 279: fatal_fr(r, "parse handle");
1.116 djm 280: sshbuf_free(msg);
1.1 djm 281:
1.116 djm 282: return handle;
1.1 djm 283: }
284:
1.17 itojun 285: static Attrib *
1.93 djm 286: get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
1.1 djm 287: {
1.116 djm 288: struct sshbuf *msg;
289: u_int id;
290: u_char type;
291: int r;
292: static Attrib a;
293:
294: if ((msg = sshbuf_new()) == NULL)
1.137 djm 295: fatal_f("sshbuf_new failed");
1.116 djm 296: get_msg(conn, msg);
297:
298: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
299: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 300: fatal_fr(r, "parse");
1.1 djm 301:
1.33 deraadt 302: debug3("Received stat reply T:%u I:%u", type, id);
1.1 djm 303: if (id != expected_id)
1.33 deraadt 304: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 305: if (type == SSH2_FXP_STATUS) {
1.116 djm 306: u_int status;
1.1 djm 307:
1.116 djm 308: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 309: fatal_fr(r, "parse status");
1.14 djm 310: if (quiet)
311: debug("Couldn't stat remote file: %s", fx2txt(status));
312: else
313: error("Couldn't stat remote file: %s", fx2txt(status));
1.116 djm 314: sshbuf_free(msg);
1.1 djm 315: return(NULL);
316: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 317: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 318: SSH2_FXP_ATTRS, type);
319: }
1.116 djm 320: if ((r = decode_attrib(msg, &a)) != 0) {
1.137 djm 321: error_fr(r, "decode_attrib");
1.116 djm 322: sshbuf_free(msg);
323: return NULL;
324: }
325: sshbuf_free(msg);
1.1 djm 326:
1.116 djm 327: return &a;
1.1 djm 328: }
329:
1.82 djm 330: static int
1.93 djm 331: get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
332: u_int expected_id, int quiet)
1.82 djm 333: {
1.116 djm 334: struct sshbuf *msg;
335: u_char type;
336: u_int id;
337: u_int64_t flag;
338: int r;
1.82 djm 339:
1.116 djm 340: if ((msg = sshbuf_new()) == NULL)
1.137 djm 341: fatal_f("sshbuf_new failed");
1.116 djm 342: get_msg(conn, msg);
343:
344: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
345: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 346: fatal_fr(r, "parse");
1.82 djm 347:
348: debug3("Received statvfs reply T:%u I:%u", type, id);
349: if (id != expected_id)
350: fatal("ID mismatch (%u != %u)", id, expected_id);
351: if (type == SSH2_FXP_STATUS) {
1.116 djm 352: u_int status;
1.82 djm 353:
1.116 djm 354: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 355: fatal_fr(r, "parse status");
1.82 djm 356: if (quiet)
357: debug("Couldn't statvfs: %s", fx2txt(status));
358: else
359: error("Couldn't statvfs: %s", fx2txt(status));
1.116 djm 360: sshbuf_free(msg);
1.82 djm 361: return -1;
362: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
363: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
364: SSH2_FXP_EXTENDED_REPLY, type);
365: }
366:
1.114 tedu 367: memset(st, 0, sizeof(*st));
1.116 djm 368: if ((r = sshbuf_get_u64(msg, &st->f_bsize)) != 0 ||
369: (r = sshbuf_get_u64(msg, &st->f_frsize)) != 0 ||
370: (r = sshbuf_get_u64(msg, &st->f_blocks)) != 0 ||
371: (r = sshbuf_get_u64(msg, &st->f_bfree)) != 0 ||
372: (r = sshbuf_get_u64(msg, &st->f_bavail)) != 0 ||
373: (r = sshbuf_get_u64(msg, &st->f_files)) != 0 ||
374: (r = sshbuf_get_u64(msg, &st->f_ffree)) != 0 ||
375: (r = sshbuf_get_u64(msg, &st->f_favail)) != 0 ||
376: (r = sshbuf_get_u64(msg, &st->f_fsid)) != 0 ||
377: (r = sshbuf_get_u64(msg, &flag)) != 0 ||
378: (r = sshbuf_get_u64(msg, &st->f_namemax)) != 0)
1.137 djm 379: fatal_fr(r, "parse statvfs");
1.82 djm 380:
381: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
382: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
383:
1.116 djm 384: sshbuf_free(msg);
1.82 djm 385:
386: return 0;
387: }
388:
1.23 djm 389: struct sftp_conn *
1.93 djm 390: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
391: u_int64_t limit_kbps)
1.1 djm 392: {
1.116 djm 393: u_char type;
394: struct sshbuf *msg;
1.23 djm 395: struct sftp_conn *ret;
1.116 djm 396: int r;
1.1 djm 397:
1.103 djm 398: ret = xcalloc(1, sizeof(*ret));
399: ret->msg_id = 1;
1.93 djm 400: ret->fd_in = fd_in;
401: ret->fd_out = fd_out;
1.141 ! djm 402: ret->download_buflen = ret->upload_buflen =
! 403: transfer_buflen ? transfer_buflen : DEFAULT_COPY_BUFLEN;
! 404: ret->num_requests =
! 405: num_requests ? num_requests : DEFAULT_NUM_REQUESTS;
1.93 djm 406: ret->exts = 0;
407: ret->limit_kbps = 0;
408:
1.116 djm 409: if ((msg = sshbuf_new()) == NULL)
1.137 djm 410: fatal_f("sshbuf_new failed");
1.116 djm 411: if ((r = sshbuf_put_u8(msg, SSH2_FXP_INIT)) != 0 ||
412: (r = sshbuf_put_u32(msg, SSH2_FILEXFER_VERSION)) != 0)
1.137 djm 413: fatal_fr(r, "parse");
414:
1.116 djm 415: send_msg(ret, msg);
1.1 djm 416:
1.128 dtucker 417: get_msg_extended(ret, msg, 1);
1.1 djm 418:
1.3 stevesk 419: /* Expecting a VERSION reply */
1.116 djm 420: if ((r = sshbuf_get_u8(msg, &type)) != 0)
1.137 djm 421: fatal_fr(r, "parse type");
1.116 djm 422: if (type != SSH2_FXP_VERSION) {
1.33 deraadt 423: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 424: type);
1.116 djm 425: sshbuf_free(msg);
1.119 jsg 426: free(ret);
1.23 djm 427: return(NULL);
1.1 djm 428: }
1.116 djm 429: if ((r = sshbuf_get_u32(msg, &ret->version)) != 0)
1.137 djm 430: fatal_fr(r, "parse version");
1.1 djm 431:
1.93 djm 432: debug2("Remote version: %u", ret->version);
1.1 djm 433:
434: /* Check for extensions */
1.116 djm 435: while (sshbuf_len(msg) > 0) {
436: char *name;
437: u_char *value;
438: size_t vlen;
1.85 djm 439: int known = 0;
1.1 djm 440:
1.116 djm 441: if ((r = sshbuf_get_cstring(msg, &name, NULL)) != 0 ||
442: (r = sshbuf_get_string(msg, &value, &vlen)) != 0)
1.137 djm 443: fatal_fr(r, "parse extension");
1.82 djm 444: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.116 djm 445: strcmp((char *)value, "1") == 0) {
1.93 djm 446: ret->exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 447: known = 1;
448: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
1.116 djm 449: strcmp((char *)value, "2") == 0) {
1.93 djm 450: ret->exts |= SFTP_EXT_STATVFS;
1.85 djm 451: known = 1;
1.94 djm 452: } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
1.116 djm 453: strcmp((char *)value, "2") == 0) {
1.93 djm 454: ret->exts |= SFTP_EXT_FSTATVFS;
1.85 djm 455: known = 1;
1.94 djm 456: } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
1.116 djm 457: strcmp((char *)value, "1") == 0) {
1.94 djm 458: ret->exts |= SFTP_EXT_HARDLINK;
459: known = 1;
1.116 djm 460: } else if (strcmp(name, "fsync@openssh.com") == 0 &&
461: strcmp((char *)value, "1") == 0) {
462: ret->exts |= SFTP_EXT_FSYNC;
463: known = 1;
1.131 djm 464: } else if (strcmp(name, "lsetstat@openssh.com") == 0 &&
465: strcmp((char *)value, "1") == 0) {
466: ret->exts |= SFTP_EXT_LSETSTAT;
467: known = 1;
1.141 ! djm 468: } else if (strcmp(name, "limits@openssh.com") == 0 &&
! 469: strcmp((char *)value, "1") == 0) {
! 470: ret->exts |= SFTP_EXT_LIMITS;
! 471: known = 1;
1.85 djm 472: }
473: if (known) {
474: debug2("Server supports extension \"%s\" revision %s",
475: name, value);
476: } else {
477: debug2("Unrecognised server extension \"%s\"", name);
478: }
1.98 djm 479: free(name);
480: free(value);
1.1 djm 481: }
482:
1.116 djm 483: sshbuf_free(msg);
1.11 djm 484:
1.141 ! djm 485: /* Query the server for its limits */
! 486: if (ret->exts & SFTP_EXT_LIMITS) {
! 487: struct sftp_limits limits;
! 488: if (do_limits(ret, &limits) != 0)
! 489: fatal_f("limits failed");
! 490:
! 491: /* If the caller did not specify, find a good value */
! 492: if (transfer_buflen == 0) {
! 493: ret->download_buflen = limits.read_length;
! 494: ret->upload_buflen = limits.write_length;
! 495: debug("Using server download size %u", ret->download_buflen);
! 496: debug("Using server upload size %u", ret->upload_buflen);
! 497: }
! 498:
! 499: /* Use the server limit to scale down our value only */
! 500: if (num_requests == 0 && limits.open_handles) {
! 501: ret->num_requests =
! 502: MINIMUM(DEFAULT_NUM_REQUESTS, limits.open_handles);
! 503: debug("Server handle limit %llu; using %u",
! 504: (unsigned long long)limits.open_handles, ret->num_requests);
! 505: }
! 506: }
! 507:
1.23 djm 508: /* Some filexfer v.0 servers don't support large packets */
1.141 ! djm 509: if (ret->version == 0) {
! 510: ret->download_buflen = MINIMUM(ret->download_buflen, 20480);
! 511: ret->upload_buflen = MINIMUM(ret->upload_buflen, 20480);
! 512: }
1.23 djm 513:
1.93 djm 514: ret->limit_kbps = limit_kbps;
515: if (ret->limit_kbps > 0) {
516: bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
1.141 ! djm 517: ret->download_buflen);
1.93 djm 518: bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
1.141 ! djm 519: ret->upload_buflen);
1.93 djm 520: }
521:
522: return ret;
1.23 djm 523: }
524:
525: u_int
526: sftp_proto_version(struct sftp_conn *conn)
527: {
1.93 djm 528: return conn->version;
1.1 djm 529: }
530:
531: int
1.141 ! djm 532: do_limits(struct sftp_conn *conn, struct sftp_limits *limits)
! 533: {
! 534: u_int id, msg_id;
! 535: u_char type;
! 536: struct sshbuf *msg;
! 537: int r;
! 538:
! 539: if ((conn->exts & SFTP_EXT_LIMITS) == 0) {
! 540: error("Server does not support limits@openssh.com extension");
! 541: return -1;
! 542: }
! 543:
! 544: if ((msg = sshbuf_new()) == NULL)
! 545: fatal_f("sshbuf_new failed");
! 546:
! 547: id = conn->msg_id++;
! 548: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
! 549: (r = sshbuf_put_u32(msg, id)) != 0 ||
! 550: (r = sshbuf_put_cstring(msg, "limits@openssh.com")) != 0)
! 551: fatal_fr(r, "compose");
! 552: send_msg(conn, msg);
! 553: debug3("Sent message limits@openssh.com I:%u", id);
! 554:
! 555: get_msg(conn, msg);
! 556:
! 557: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
! 558: (r = sshbuf_get_u32(msg, &msg_id)) != 0)
! 559: fatal_fr(r, "parse");
! 560:
! 561: debug3("Received limits reply T:%u I:%u", type, msg_id);
! 562: if (id != msg_id)
! 563: fatal("ID mismatch (%u != %u)", msg_id, id);
! 564: if (type != SSH2_FXP_EXTENDED_REPLY) {
! 565: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
! 566: SSH2_FXP_EXTENDED_REPLY, type);
! 567: }
! 568:
! 569: memset(limits, 0, sizeof(*limits));
! 570: if ((r = sshbuf_get_u64(msg, &limits->packet_length)) != 0 ||
! 571: (r = sshbuf_get_u64(msg, &limits->read_length)) != 0 ||
! 572: (r = sshbuf_get_u64(msg, &limits->write_length)) != 0 ||
! 573: (r = sshbuf_get_u64(msg, &limits->open_handles)) != 0)
! 574: fatal_fr(r, "parse limits");
! 575:
! 576: sshbuf_free(msg);
! 577:
! 578: return 0;
! 579: }
! 580:
! 581: int
1.116 djm 582: do_close(struct sftp_conn *conn, const u_char *handle, u_int handle_len)
1.1 djm 583: {
584: u_int id, status;
1.116 djm 585: struct sshbuf *msg;
586: int r;
1.1 djm 587:
1.116 djm 588: if ((msg = sshbuf_new()) == NULL)
1.137 djm 589: fatal_f("sshbuf_new failed");
1.1 djm 590:
1.23 djm 591: id = conn->msg_id++;
1.116 djm 592: if ((r = sshbuf_put_u8(msg, SSH2_FXP_CLOSE)) != 0 ||
593: (r = sshbuf_put_u32(msg, id)) != 0 ||
594: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1.137 djm 595: fatal_fr(r, "parse");
1.116 djm 596: send_msg(conn, msg);
1.33 deraadt 597: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 598:
1.93 djm 599: status = get_status(conn, id);
1.1 djm 600: if (status != SSH2_FX_OK)
601: error("Couldn't close file: %s", fx2txt(status));
602:
1.116 djm 603: sshbuf_free(msg);
1.1 djm 604:
1.116 djm 605: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 606: }
607:
1.12 djm 608:
1.17 itojun 609: static int
1.116 djm 610: do_lsreaddir(struct sftp_conn *conn, const char *path, int print_flag,
1.12 djm 611: SFTP_DIRENT ***dir)
1.1 djm 612: {
1.116 djm 613: struct sshbuf *msg;
614: u_int count, id, i, expected_id, ents = 0;
615: size_t handle_len;
1.123 djm 616: u_char type, *handle;
1.111 djm 617: int status = SSH2_FX_FAILURE;
1.116 djm 618: int r;
1.111 djm 619:
620: if (dir)
621: *dir = NULL;
1.1 djm 622:
1.23 djm 623: id = conn->msg_id++;
1.1 djm 624:
1.116 djm 625: if ((msg = sshbuf_new()) == NULL)
1.137 djm 626: fatal_f("sshbuf_new failed");
1.116 djm 627: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPENDIR)) != 0 ||
628: (r = sshbuf_put_u32(msg, id)) != 0 ||
629: (r = sshbuf_put_cstring(msg, path)) != 0)
1.137 djm 630: fatal_fr(r, "compose OPENDIR");
1.116 djm 631: send_msg(conn, msg);
1.1 djm 632:
1.93 djm 633: handle = get_handle(conn, id, &handle_len,
1.88 djm 634: "remote readdir(\"%s\")", path);
1.96 markus 635: if (handle == NULL) {
1.116 djm 636: sshbuf_free(msg);
1.93 djm 637: return -1;
1.96 markus 638: }
1.1 djm 639:
1.12 djm 640: if (dir) {
641: ents = 0;
1.108 djm 642: *dir = xcalloc(1, sizeof(**dir));
1.12 djm 643: (*dir)[0] = NULL;
644: }
645:
1.49 djm 646: for (; !interrupted;) {
1.23 djm 647: id = expected_id = conn->msg_id++;
1.1 djm 648:
1.33 deraadt 649: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 650:
1.116 djm 651: sshbuf_reset(msg);
652: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READDIR)) != 0 ||
653: (r = sshbuf_put_u32(msg, id)) != 0 ||
654: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1.137 djm 655: fatal_fr(r, "compose READDIR");
1.116 djm 656: send_msg(conn, msg);
657:
658: sshbuf_reset(msg);
659:
660: get_msg(conn, msg);
661:
662: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
663: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 664: fatal_fr(r, "parse");
1.1 djm 665:
1.33 deraadt 666: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 667:
668: if (id != expected_id)
1.33 deraadt 669: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 670:
671: if (type == SSH2_FXP_STATUS) {
1.116 djm 672: u_int rstatus;
673:
674: if ((r = sshbuf_get_u32(msg, &rstatus)) != 0)
1.137 djm 675: fatal_fr(r, "parse status");
1.116 djm 676: debug3("Received SSH2_FXP_STATUS %d", rstatus);
677: if (rstatus == SSH2_FX_EOF)
1.1 djm 678: break;
1.116 djm 679: error("Couldn't read directory: %s", fx2txt(rstatus));
1.111 djm 680: goto out;
1.1 djm 681: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 682: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 683: SSH2_FXP_NAME, type);
684:
1.116 djm 685: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1.137 djm 686: fatal_fr(r, "parse count");
1.126 djm 687: if (count > SSHBUF_SIZE_MAX)
1.137 djm 688: fatal_f("nonsensical number of entries");
1.7 markus 689: if (count == 0)
690: break;
1.8 stevesk 691: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 692: for (i = 0; i < count; i++) {
1.1 djm 693: char *filename, *longname;
1.116 djm 694: Attrib a;
1.1 djm 695:
1.116 djm 696: if ((r = sshbuf_get_cstring(msg, &filename,
697: NULL)) != 0 ||
698: (r = sshbuf_get_cstring(msg, &longname,
699: NULL)) != 0)
1.137 djm 700: fatal_fr(r, "parse filenames");
1.116 djm 701: if ((r = decode_attrib(msg, &a)) != 0) {
1.137 djm 702: error_fr(r, "couldn't decode attrib");
1.116 djm 703: free(filename);
704: free(longname);
1.135 djm 705: goto out;
1.116 djm 706: }
1.1 djm 707:
1.105 djm 708: if (print_flag)
1.124 schwarze 709: mprintf("%s\n", longname);
1.12 djm 710:
1.89 djm 711: /*
712: * Directory entries should never contain '/'
713: * These can be used to attack recursive ops
714: * (e.g. send '../../../../etc/passwd')
715: */
716: if (strchr(filename, '/') != NULL) {
717: error("Server sent suspect path \"%s\" "
718: "during readdir of \"%s\"", filename, path);
1.111 djm 719: } else if (dir) {
1.118 deraadt 720: *dir = xreallocarray(*dir, ents + 2, sizeof(**dir));
1.108 djm 721: (*dir)[ents] = xcalloc(1, sizeof(***dir));
1.12 djm 722: (*dir)[ents]->filename = xstrdup(filename);
723: (*dir)[ents]->longname = xstrdup(longname);
1.116 djm 724: memcpy(&(*dir)[ents]->a, &a, sizeof(a));
1.12 djm 725: (*dir)[++ents] = NULL;
726: }
1.98 djm 727: free(filename);
728: free(longname);
1.1 djm 729: }
730: }
1.111 djm 731: status = 0;
1.1 djm 732:
1.111 djm 733: out:
1.116 djm 734: sshbuf_free(msg);
1.23 djm 735: do_close(conn, handle, handle_len);
1.98 djm 736: free(handle);
1.1 djm 737:
1.111 djm 738: if (status != 0 && dir != NULL) {
739: /* Don't return results on error */
740: free_sftp_dirents(*dir);
741: *dir = NULL;
742: } else if (interrupted && dir != NULL && *dir != NULL) {
743: /* Don't return partial matches on interrupt */
1.49 djm 744: free_sftp_dirents(*dir);
1.108 djm 745: *dir = xcalloc(1, sizeof(**dir));
1.49 djm 746: **dir = NULL;
747: }
748:
1.129 djm 749: return status == SSH2_FX_OK ? 0 : -1;
1.12 djm 750: }
751:
752: int
1.116 djm 753: do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir)
1.12 djm 754: {
1.23 djm 755: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 756: }
757:
758: void free_sftp_dirents(SFTP_DIRENT **s)
759: {
760: int i;
1.19 deraadt 761:
1.111 djm 762: if (s == NULL)
763: return;
1.19 deraadt 764: for (i = 0; s[i]; i++) {
1.98 djm 765: free(s[i]->filename);
766: free(s[i]->longname);
767: free(s[i]);
1.12 djm 768: }
1.98 djm 769: free(s);
1.12 djm 770: }
771:
772: int
1.116 djm 773: do_rm(struct sftp_conn *conn, const char *path)
1.1 djm 774: {
775: u_int status, id;
776:
777: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
778:
1.23 djm 779: id = conn->msg_id++;
1.93 djm 780: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
781: status = get_status(conn, id);
1.1 djm 782: if (status != SSH2_FX_OK)
783: error("Couldn't delete file: %s", fx2txt(status));
1.116 djm 784: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 785: }
786:
787: int
1.116 djm 788: do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag)
1.1 djm 789: {
790: u_int status, id;
791:
1.23 djm 792: id = conn->msg_id++;
1.93 djm 793: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 794: strlen(path), a);
795:
1.93 djm 796: status = get_status(conn, id);
1.105 djm 797: if (status != SSH2_FX_OK && print_flag)
1.1 djm 798: error("Couldn't create directory: %s", fx2txt(status));
799:
1.116 djm 800: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 801: }
802:
803: int
1.116 djm 804: do_rmdir(struct sftp_conn *conn, const char *path)
1.1 djm 805: {
806: u_int status, id;
807:
1.23 djm 808: id = conn->msg_id++;
1.93 djm 809: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 810: strlen(path));
1.1 djm 811:
1.93 djm 812: status = get_status(conn, id);
1.1 djm 813: if (status != SSH2_FX_OK)
814: error("Couldn't remove directory: %s", fx2txt(status));
815:
1.116 djm 816: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 817: }
818:
819: Attrib *
1.116 djm 820: do_stat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 821: {
822: u_int id;
823:
1.23 djm 824: id = conn->msg_id++;
825:
1.93 djm 826: send_string_request(conn, id,
1.28 markus 827: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 828: path, strlen(path));
829:
1.93 djm 830: return(get_decode_stat(conn, id, quiet));
1.1 djm 831: }
832:
833: Attrib *
1.116 djm 834: do_lstat(struct sftp_conn *conn, const char *path, int quiet)
1.1 djm 835: {
836: u_int id;
837:
1.23 djm 838: if (conn->version == 0) {
839: if (quiet)
840: debug("Server version does not support lstat operation");
841: else
1.43 itojun 842: logit("Server version does not support lstat operation");
1.30 markus 843: return(do_stat(conn, path, quiet));
1.23 djm 844: }
845:
846: id = conn->msg_id++;
1.93 djm 847: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 848: strlen(path));
849:
1.93 djm 850: return(get_decode_stat(conn, id, quiet));
1.1 djm 851: }
852:
1.78 chl 853: #ifdef notyet
1.1 djm 854: Attrib *
1.116 djm 855: do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
856: int quiet)
1.1 djm 857: {
858: u_int id;
859:
1.23 djm 860: id = conn->msg_id++;
1.93 djm 861: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 862: handle_len);
863:
1.93 djm 864: return(get_decode_stat(conn, id, quiet));
1.1 djm 865: }
1.78 chl 866: #endif
1.1 djm 867:
868: int
1.116 djm 869: do_setstat(struct sftp_conn *conn, const char *path, Attrib *a)
1.1 djm 870: {
871: u_int status, id;
872:
1.23 djm 873: id = conn->msg_id++;
1.93 djm 874: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 875: strlen(path), a);
876:
1.93 djm 877: status = get_status(conn, id);
1.1 djm 878: if (status != SSH2_FX_OK)
879: error("Couldn't setstat on \"%s\": %s", path,
880: fx2txt(status));
881:
1.116 djm 882: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 883: }
884:
885: int
1.116 djm 886: do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.1 djm 887: Attrib *a)
888: {
889: u_int status, id;
890:
1.23 djm 891: id = conn->msg_id++;
1.93 djm 892: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 893: handle_len, a);
894:
1.93 djm 895: status = get_status(conn, id);
1.1 djm 896: if (status != SSH2_FX_OK)
897: error("Couldn't fsetstat: %s", fx2txt(status));
898:
1.116 djm 899: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 900: }
901:
902: char *
1.116 djm 903: do_realpath(struct sftp_conn *conn, const char *path)
1.1 djm 904: {
1.116 djm 905: struct sshbuf *msg;
906: u_int expected_id, count, id;
1.1 djm 907: char *filename, *longname;
1.116 djm 908: Attrib a;
909: u_char type;
910: int r;
1.1 djm 911:
1.23 djm 912: expected_id = id = conn->msg_id++;
1.93 djm 913: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 914: strlen(path));
1.1 djm 915:
1.116 djm 916: if ((msg = sshbuf_new()) == NULL)
1.137 djm 917: fatal_f("sshbuf_new failed");
1.1 djm 918:
1.116 djm 919: get_msg(conn, msg);
920: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
921: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 922: fatal_fr(r, "parse");
1.1 djm 923:
924: if (id != expected_id)
1.33 deraadt 925: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 926:
927: if (type == SSH2_FXP_STATUS) {
1.116 djm 928: u_int status;
1.1 djm 929:
1.116 djm 930: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 931: fatal_fr(r, "parse status");
1.107 djm 932: error("Couldn't canonicalize: %s", fx2txt(status));
1.116 djm 933: sshbuf_free(msg);
1.91 djm 934: return NULL;
1.1 djm 935: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 936: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 937: SSH2_FXP_NAME, type);
938:
1.116 djm 939: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1.137 djm 940: fatal_fr(r, "parse count");
1.1 djm 941: if (count != 1)
942: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
943:
1.116 djm 944: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
945: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
946: (r = decode_attrib(msg, &a)) != 0)
1.137 djm 947: fatal_fr(r, "parse filename/attrib");
1.1 djm 948:
1.97 dtucker 949: debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
1.116 djm 950: (unsigned long)a.size);
1.1 djm 951:
1.98 djm 952: free(longname);
1.1 djm 953:
1.116 djm 954: sshbuf_free(msg);
1.1 djm 955:
956: return(filename);
957: }
958:
959: int
1.116 djm 960: do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath,
1.102 djm 961: int force_legacy)
1.1 djm 962: {
1.116 djm 963: struct sshbuf *msg;
1.1 djm 964: u_int status, id;
1.116 djm 965: int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
1.1 djm 966:
1.116 djm 967: if ((msg = sshbuf_new()) == NULL)
1.137 djm 968: fatal_f("sshbuf_new failed");
1.1 djm 969:
970: /* Send rename request */
1.23 djm 971: id = conn->msg_id++;
1.102 djm 972: if (use_ext) {
1.116 djm 973: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
974: (r = sshbuf_put_u32(msg, id)) != 0 ||
975: (r = sshbuf_put_cstring(msg,
976: "posix-rename@openssh.com")) != 0)
1.137 djm 977: fatal_fr(r, "compose posix-rename");
1.81 djm 978: } else {
1.116 djm 979: if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 ||
980: (r = sshbuf_put_u32(msg, id)) != 0)
1.137 djm 981: fatal_fr(r, "compose rename");
1.116 djm 982: }
983: if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
984: (r = sshbuf_put_cstring(msg, newpath)) != 0)
1.137 djm 985: fatal_fr(r, "compose paths");
1.116 djm 986: send_msg(conn, msg);
1.81 djm 987: debug3("Sent message %s \"%s\" -> \"%s\"",
1.116 djm 988: use_ext ? "posix-rename@openssh.com" :
989: "SSH2_FXP_RENAME", oldpath, newpath);
990: sshbuf_free(msg);
1.1 djm 991:
1.93 djm 992: status = get_status(conn, id);
1.1 djm 993: if (status != SSH2_FX_OK)
1.23 djm 994: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 995: newpath, fx2txt(status));
996:
1.116 djm 997: return status == SSH2_FX_OK ? 0 : -1;
1.94 djm 998: }
999:
1000: int
1.116 djm 1001: do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.94 djm 1002: {
1.116 djm 1003: struct sshbuf *msg;
1.94 djm 1004: u_int status, id;
1.116 djm 1005: int r;
1.94 djm 1006:
1007: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
1008: error("Server does not support hardlink@openssh.com extension");
1009: return -1;
1010: }
1011:
1.116 djm 1012: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1013: fatal_f("sshbuf_new failed");
1.95 markus 1014:
1015: /* Send link request */
1016: id = conn->msg_id++;
1.116 djm 1017: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1018: (r = sshbuf_put_u32(msg, id)) != 0 ||
1019: (r = sshbuf_put_cstring(msg, "hardlink@openssh.com")) != 0 ||
1020: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
1021: (r = sshbuf_put_cstring(msg, newpath)) != 0)
1.137 djm 1022: fatal_fr(r, "compose");
1.116 djm 1023: send_msg(conn, msg);
1.94 djm 1024: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
1025: oldpath, newpath);
1.116 djm 1026: sshbuf_free(msg);
1.94 djm 1027:
1028: status = get_status(conn, id);
1029: if (status != SSH2_FX_OK)
1030: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 1031: newpath, fx2txt(status));
1.1 djm 1032:
1.116 djm 1033: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 1034: }
1035:
1036: int
1.116 djm 1037: do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
1.11 djm 1038: {
1.116 djm 1039: struct sshbuf *msg;
1.11 djm 1040: u_int status, id;
1.116 djm 1041: int r;
1.11 djm 1042:
1.23 djm 1043: if (conn->version < 3) {
1044: error("This server does not support the symlink operation");
1045: return(SSH2_FX_OP_UNSUPPORTED);
1046: }
1047:
1.116 djm 1048: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1049: fatal_f("sshbuf_new failed");
1.11 djm 1050:
1.48 djm 1051: /* Send symlink request */
1.23 djm 1052: id = conn->msg_id++;
1.116 djm 1053: if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 ||
1054: (r = sshbuf_put_u32(msg, id)) != 0 ||
1055: (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
1056: (r = sshbuf_put_cstring(msg, newpath)) != 0)
1.137 djm 1057: fatal_fr(r, "compose");
1.116 djm 1058: send_msg(conn, msg);
1.11 djm 1059: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
1060: newpath);
1.116 djm 1061: sshbuf_free(msg);
1.11 djm 1062:
1.93 djm 1063: status = get_status(conn, id);
1.11 djm 1064: if (status != SSH2_FX_OK)
1.36 markus 1065: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 1066: newpath, fx2txt(status));
1.11 djm 1067:
1.116 djm 1068: return status == SSH2_FX_OK ? 0 : -1;
1.11 djm 1069: }
1070:
1.107 djm 1071: int
1.116 djm 1072: do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len)
1.107 djm 1073: {
1.116 djm 1074: struct sshbuf *msg;
1.107 djm 1075: u_int status, id;
1.116 djm 1076: int r;
1.107 djm 1077:
1078: /* Silently return if the extension is not supported */
1079: if ((conn->exts & SFTP_EXT_FSYNC) == 0)
1080: return -1;
1081:
1082: /* Send fsync request */
1.116 djm 1083: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1084: fatal_f("sshbuf_new failed");
1.107 djm 1085: id = conn->msg_id++;
1.116 djm 1086: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1087: (r = sshbuf_put_u32(msg, id)) != 0 ||
1088: (r = sshbuf_put_cstring(msg, "fsync@openssh.com")) != 0 ||
1089: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1.137 djm 1090: fatal_fr(r, "compose");
1.116 djm 1091: send_msg(conn, msg);
1.107 djm 1092: debug3("Sent message fsync@openssh.com I:%u", id);
1.116 djm 1093: sshbuf_free(msg);
1.107 djm 1094:
1095: status = get_status(conn, id);
1096: if (status != SSH2_FX_OK)
1097: error("Couldn't sync file: %s", fx2txt(status));
1098:
1.129 djm 1099: return status == SSH2_FX_OK ? 0 : -1;
1.107 djm 1100: }
1101:
1.78 chl 1102: #ifdef notyet
1.11 djm 1103: char *
1.116 djm 1104: do_readlink(struct sftp_conn *conn, const char *path)
1.11 djm 1105: {
1.116 djm 1106: struct sshbuf *msg;
1107: u_int expected_id, count, id;
1.11 djm 1108: char *filename, *longname;
1.116 djm 1109: Attrib a;
1110: u_char type;
1111: int r;
1.11 djm 1112:
1.23 djm 1113: expected_id = id = conn->msg_id++;
1.93 djm 1114: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 1115:
1.116 djm 1116: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1117: fatal_f("sshbuf_new failed");
1.11 djm 1118:
1.116 djm 1119: get_msg(conn, msg);
1120: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1121: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 1122: fatal_fr(r, "parse");
1.11 djm 1123:
1124: if (id != expected_id)
1.33 deraadt 1125: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 1126:
1127: if (type == SSH2_FXP_STATUS) {
1.116 djm 1128: u_int status;
1.11 djm 1129:
1.116 djm 1130: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 1131: fatal_fr(r, "parse status");
1.11 djm 1132: error("Couldn't readlink: %s", fx2txt(status));
1.116 djm 1133: sshbuf_free(msg);
1.11 djm 1134: return(NULL);
1135: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 1136: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 1137: SSH2_FXP_NAME, type);
1138:
1.116 djm 1139: if ((r = sshbuf_get_u32(msg, &count)) != 0)
1.137 djm 1140: fatal_fr(r, "parse count");
1.11 djm 1141: if (count != 1)
1142: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
1143:
1.116 djm 1144: if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
1145: (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
1146: (r = decode_attrib(msg, &a)) != 0)
1.137 djm 1147: fatal_fr(r, "parse filenames/attrib");
1.11 djm 1148:
1149: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
1150:
1.98 djm 1151: free(longname);
1.11 djm 1152:
1.116 djm 1153: sshbuf_free(msg);
1.11 djm 1154:
1.116 djm 1155: return filename;
1.82 djm 1156: }
1157: #endif
1158:
1159: int
1.84 dtucker 1160: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 1161: int quiet)
1162: {
1.116 djm 1163: struct sshbuf *msg;
1.82 djm 1164: u_int id;
1.116 djm 1165: int r;
1.82 djm 1166:
1167: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
1168: error("Server does not support statvfs@openssh.com extension");
1169: return -1;
1170: }
1171:
1172: id = conn->msg_id++;
1173:
1.116 djm 1174: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1175: fatal_f("sshbuf_new failed");
1.116 djm 1176: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1177: (r = sshbuf_put_u32(msg, id)) != 0 ||
1178: (r = sshbuf_put_cstring(msg, "statvfs@openssh.com")) != 0 ||
1179: (r = sshbuf_put_cstring(msg, path)) != 0)
1.137 djm 1180: fatal_fr(r, "compose");
1.116 djm 1181: send_msg(conn, msg);
1182: sshbuf_free(msg);
1.82 djm 1183:
1.93 djm 1184: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 1185: }
1186:
1187: #ifdef notyet
1188: int
1.116 djm 1189: do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1.84 dtucker 1190: struct sftp_statvfs *st, int quiet)
1.82 djm 1191: {
1.116 djm 1192: struct sshbuf *msg;
1.82 djm 1193: u_int id;
1194:
1195: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
1196: error("Server does not support fstatvfs@openssh.com extension");
1197: return -1;
1198: }
1199:
1200: id = conn->msg_id++;
1201:
1.116 djm 1202: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1203: fatal_f("sshbuf_new failed");
1.116 djm 1204: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1205: (r = sshbuf_put_u32(msg, id)) != 0 ||
1206: (r = sshbuf_put_cstring(msg, "fstatvfs@openssh.com")) != 0 ||
1207: (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1.137 djm 1208: fatal_fr(r, "compose");
1.116 djm 1209: send_msg(conn, msg);
1210: sshbuf_free(msg);
1.82 djm 1211:
1.93 djm 1212: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 1213: }
1.78 chl 1214: #endif
1.1 djm 1215:
1.131 djm 1216: int
1217: do_lsetstat(struct sftp_conn *conn, const char *path, Attrib *a)
1218: {
1219: struct sshbuf *msg;
1220: u_int status, id;
1221: int r;
1222:
1223: if ((conn->exts & SFTP_EXT_LSETSTAT) == 0) {
1224: error("Server does not support lsetstat@openssh.com extension");
1225: return -1;
1226: }
1227:
1228: id = conn->msg_id++;
1229: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1230: fatal_f("sshbuf_new failed");
1.131 djm 1231: if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1232: (r = sshbuf_put_u32(msg, id)) != 0 ||
1233: (r = sshbuf_put_cstring(msg, "lsetstat@openssh.com")) != 0 ||
1234: (r = sshbuf_put_cstring(msg, path)) != 0 ||
1235: (r = encode_attrib(msg, a)) != 0)
1.137 djm 1236: fatal_fr(r, "compose");
1.131 djm 1237: send_msg(conn, msg);
1238: sshbuf_free(msg);
1239:
1240: status = get_status(conn, id);
1241: if (status != SSH2_FX_OK)
1242: error("Couldn't setstat on \"%s\": %s", path,
1243: fx2txt(status));
1244:
1245: return status == SSH2_FX_OK ? 0 : -1;
1246: }
1247:
1.21 djm 1248: static void
1.93 djm 1249: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
1.116 djm 1250: u_int len, const u_char *handle, u_int handle_len)
1.21 djm 1251: {
1.116 djm 1252: struct sshbuf *msg;
1253: int r;
1.28 markus 1254:
1.116 djm 1255: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1256: fatal_f("sshbuf_new failed");
1.116 djm 1257: if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 ||
1258: (r = sshbuf_put_u32(msg, id)) != 0 ||
1259: (r = sshbuf_put_string(msg, handle, handle_len)) != 0 ||
1260: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1261: (r = sshbuf_put_u32(msg, len)) != 0)
1.137 djm 1262: fatal_fr(r, "compose");
1.116 djm 1263: send_msg(conn, msg);
1264: sshbuf_free(msg);
1.28 markus 1265: }
1.21 djm 1266:
1.1 djm 1267: int
1.116 djm 1268: do_download(struct sftp_conn *conn, const char *remote_path,
1269: const char *local_path, Attrib *a, int preserve_flag, int resume_flag,
1270: int fsync_flag)
1.1 djm 1271: {
1.89 djm 1272: Attrib junk;
1.116 djm 1273: struct sshbuf *msg;
1274: u_char *handle;
1275: int local_fd = -1, write_error;
1.134 djm 1276: int read_error, write_errno, lmodified = 0, reordered = 0, r;
1.101 djm 1277: u_int64_t offset = 0, size, highwater;
1.116 djm 1278: u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK;
1.39 fgsch 1279: off_t progress_counter;
1.116 djm 1280: size_t handle_len;
1.101 djm 1281: struct stat st;
1.21 djm 1282: struct request {
1283: u_int id;
1.116 djm 1284: size_t len;
1.21 djm 1285: u_int64_t offset;
1.28 markus 1286: TAILQ_ENTRY(request) tq;
1.21 djm 1287: };
1288: TAILQ_HEAD(reqhead, request) requests;
1289: struct request *req;
1.116 djm 1290: u_char type;
1.21 djm 1291:
1292: TAILQ_INIT(&requests);
1.1 djm 1293:
1.89 djm 1294: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1295: return -1;
1.1 djm 1296:
1.86 djm 1297: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1298: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1299: mode = a->perm & 0777;
1.1 djm 1300: else
1301: mode = 0666;
1302:
1.14 djm 1303: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1304: (!S_ISREG(a->perm))) {
1305: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1306: return(-1);
1307: }
1308:
1.21 djm 1309: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1310: size = a->size;
1311: else
1312: size = 0;
1313:
1.141 ! djm 1314: buflen = conn->download_buflen;
1.116 djm 1315: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1316: fatal_f("sshbuf_new failed");
1.116 djm 1317:
1318: attrib_clear(&junk); /* Send empty attributes */
1.1 djm 1319:
1320: /* Send open request */
1.23 djm 1321: id = conn->msg_id++;
1.116 djm 1322: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1323: (r = sshbuf_put_u32(msg, id)) != 0 ||
1324: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1325: (r = sshbuf_put_u32(msg, SSH2_FXF_READ)) != 0 ||
1326: (r = encode_attrib(msg, &junk)) != 0)
1.137 djm 1327: fatal_fr(r, "compose");
1.116 djm 1328: send_msg(conn, msg);
1.33 deraadt 1329: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1330:
1.93 djm 1331: handle = get_handle(conn, id, &handle_len,
1.88 djm 1332: "remote open(\"%s\")", remote_path);
1.1 djm 1333: if (handle == NULL) {
1.116 djm 1334: sshbuf_free(msg);
1.1 djm 1335: return(-1);
1336: }
1337:
1.105 djm 1338: local_fd = open(local_path,
1339: O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
1.23 djm 1340: if (local_fd == -1) {
1341: error("Couldn't open local file \"%s\" for writing: %s",
1342: local_path, strerror(errno));
1.101 djm 1343: goto fail;
1344: }
1345: offset = highwater = 0;
1.105 djm 1346: if (resume_flag) {
1.101 djm 1347: if (fstat(local_fd, &st) == -1) {
1348: error("Unable to stat local file \"%s\": %s",
1349: local_path, strerror(errno));
1350: goto fail;
1351: }
1.113 djm 1352: if (st.st_size < 0) {
1353: error("\"%s\" has negative size", local_path);
1354: goto fail;
1355: }
1356: if ((u_int64_t)st.st_size > size) {
1.101 djm 1357: error("Unable to resume download of \"%s\": "
1358: "local file is larger than remote", local_path);
1359: fail:
1360: do_close(conn, handle, handle_len);
1.116 djm 1361: sshbuf_free(msg);
1.101 djm 1362: free(handle);
1.110 djm 1363: if (local_fd != -1)
1364: close(local_fd);
1.101 djm 1365: return -1;
1366: }
1367: offset = highwater = st.st_size;
1.23 djm 1368: }
1369:
1.1 djm 1370: /* Read from remote and write to local */
1.101 djm 1371: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1372: max_req = 1;
1.101 djm 1373: progress_counter = offset;
1.39 fgsch 1374:
1.47 djm 1375: if (showprogress && size != 0)
1376: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1377:
1.21 djm 1378: while (num_req > 0 || max_req > 0) {
1.116 djm 1379: u_char *data;
1380: size_t len;
1.1 djm 1381:
1.49 djm 1382: /*
1.51 deraadt 1383: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1384: * allow outstanding requests to drain gracefully
1385: */
1386: if (interrupted) {
1387: if (num_req == 0) /* If we haven't started yet... */
1388: break;
1389: max_req = 0;
1390: }
1391:
1.21 djm 1392: /* Send some more requests */
1393: while (num_req < max_req) {
1.28 markus 1394: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1395: (unsigned long long)offset,
1396: (unsigned long long)offset + buflen - 1,
1397: num_req, max_req);
1.108 djm 1398: req = xcalloc(1, sizeof(*req));
1.23 djm 1399: req->id = conn->msg_id++;
1.21 djm 1400: req->len = buflen;
1401: req->offset = offset;
1402: offset += buflen;
1403: num_req++;
1404: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1405: send_read_request(conn, req->id, req->offset,
1.21 djm 1406: req->len, handle, handle_len);
1407: }
1.1 djm 1408:
1.116 djm 1409: sshbuf_reset(msg);
1410: get_msg(conn, msg);
1411: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1412: (r = sshbuf_get_u32(msg, &id)) != 0)
1.137 djm 1413: fatal_fr(r, "parse");
1.33 deraadt 1414: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1415:
1416: /* Find the request in our queue */
1.53 deraadt 1417: for (req = TAILQ_FIRST(&requests);
1.21 djm 1418: req != NULL && req->id != id;
1419: req = TAILQ_NEXT(req, tq))
1420: ;
1421: if (req == NULL)
1422: fatal("Unexpected reply %u", id);
1423:
1424: switch (type) {
1425: case SSH2_FXP_STATUS:
1.116 djm 1426: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 1427: fatal_fr(r, "parse status");
1.21 djm 1428: if (status != SSH2_FX_EOF)
1429: read_error = 1;
1430: max_req = 0;
1431: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1432: free(req);
1.21 djm 1433: num_req--;
1434: break;
1435: case SSH2_FXP_DATA:
1.116 djm 1436: if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
1.137 djm 1437: fatal_fr(r, "parse data");
1.26 itojun 1438: debug3("Received data %llu -> %llu",
1.28 markus 1439: (unsigned long long)req->offset,
1.26 itojun 1440: (unsigned long long)req->offset + len - 1);
1.21 djm 1441: if (len > req->len)
1442: fatal("Received more data than asked for "
1.116 djm 1443: "%zu > %zu", len, req->len);
1.134 djm 1444: lmodified = 1;
1.21 djm 1445: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1446: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1447: !write_error) {
1448: write_errno = errno;
1449: write_error = 1;
1450: max_req = 0;
1451: }
1.101 djm 1452: else if (!reordered && req->offset <= highwater)
1453: highwater = req->offset + len;
1454: else if (!reordered && req->offset > highwater)
1455: reordered = 1;
1.39 fgsch 1456: progress_counter += len;
1.98 djm 1457: free(data);
1.1 djm 1458:
1.21 djm 1459: if (len == req->len) {
1460: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1461: free(req);
1.21 djm 1462: num_req--;
1463: } else {
1464: /* Resend the request for the missing data */
1465: debug3("Short data block, re-requesting "
1.26 itojun 1466: "%llu -> %llu (%2d)",
1.28 markus 1467: (unsigned long long)req->offset + len,
1.27 itojun 1468: (unsigned long long)req->offset +
1469: req->len - 1, num_req);
1.23 djm 1470: req->id = conn->msg_id++;
1.21 djm 1471: req->len -= len;
1472: req->offset += len;
1.93 djm 1473: send_read_request(conn, req->id,
1.23 djm 1474: req->offset, req->len, handle, handle_len);
1.21 djm 1475: /* Reduce the request size */
1476: if (len < buflen)
1.125 deraadt 1477: buflen = MAXIMUM(MIN_READ_SIZE, len);
1.21 djm 1478: }
1479: if (max_req > 0) { /* max_req = 0 iff EOF received */
1480: if (size > 0 && offset > size) {
1481: /* Only one request at a time
1482: * after the expected EOF */
1483: debug3("Finish at %llu (%2d)",
1.26 itojun 1484: (unsigned long long)offset,
1485: num_req);
1.21 djm 1486: max_req = 1;
1.136 djm 1487: } else if (max_req < conn->num_requests) {
1.21 djm 1488: ++max_req;
1489: }
1.1 djm 1490: }
1.21 djm 1491: break;
1492: default:
1.33 deraadt 1493: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1494: SSH2_FXP_DATA, type);
1495: }
1.21 djm 1496: }
1.1 djm 1497:
1.39 fgsch 1498: if (showprogress && size)
1499: stop_progress_meter();
1500:
1.21 djm 1501: /* Sanity check */
1502: if (TAILQ_FIRST(&requests) != NULL)
1503: fatal("Transfer complete, but requests still in queue");
1.101 djm 1504: /* Truncate at highest contiguous point to avoid holes on interrupt */
1505: if (read_error || write_error || interrupted) {
1.105 djm 1506: if (reordered && resume_flag) {
1.101 djm 1507: error("Unable to resume download of \"%s\": "
1508: "server reordered requests", local_path);
1509: }
1510: debug("truncating at %llu", (unsigned long long)highwater);
1.120 djm 1511: if (ftruncate(local_fd, highwater) == -1)
1512: error("ftruncate \"%s\": %s", local_path,
1513: strerror(errno));
1.101 djm 1514: }
1.21 djm 1515: if (read_error) {
1.28 markus 1516: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1517: remote_path, fx2txt(status));
1.103 djm 1518: status = -1;
1.23 djm 1519: do_close(conn, handle, handle_len);
1.21 djm 1520: } else if (write_error) {
1521: error("Couldn't write to \"%s\": %s", local_path,
1522: strerror(write_errno));
1.116 djm 1523: status = SSH2_FX_FAILURE;
1.23 djm 1524: do_close(conn, handle, handle_len);
1.21 djm 1525: } else {
1.116 djm 1526: if (do_close(conn, handle, handle_len) != 0 || interrupted)
1527: status = SSH2_FX_FAILURE;
1528: else
1529: status = SSH2_FX_OK;
1.21 djm 1530: /* Override umask and utimes if asked */
1.105 djm 1531: if (preserve_flag && fchmod(local_fd, mode) == -1)
1.21 djm 1532: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1533: strerror(errno));
1.105 djm 1534: if (preserve_flag &&
1535: (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1.21 djm 1536: struct timeval tv[2];
1537: tv[0].tv_sec = a->atime;
1538: tv[1].tv_sec = a->mtime;
1539: tv[0].tv_usec = tv[1].tv_usec = 0;
1540: if (utimes(local_path, tv) == -1)
1541: error("Can't set times on \"%s\": %s",
1.37 deraadt 1542: local_path, strerror(errno));
1.1 djm 1543: }
1.134 djm 1544: if (resume_flag && !lmodified)
1545: logit("File \"%s\" was not modified", local_path);
1546: else if (fsync_flag) {
1.107 djm 1547: debug("syncing \"%s\"", local_path);
1548: if (fsync(local_fd) == -1)
1549: error("Couldn't sync file \"%s\": %s",
1550: local_path, strerror(errno));
1551: }
1.10 djm 1552: }
1.5 djm 1553: close(local_fd);
1.116 djm 1554: sshbuf_free(msg);
1.98 djm 1555: free(handle);
1.23 djm 1556:
1.129 djm 1557: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1558: }
1559:
1.89 djm 1560: static int
1.116 djm 1561: download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1562: int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
1563: int resume_flag, int fsync_flag)
1.89 djm 1564: {
1565: int i, ret = 0;
1566: SFTP_DIRENT **dir_entries;
1.130 djm 1567: char *filename, *new_src = NULL, *new_dst = NULL;
1.138 dtucker 1568: mode_t mode = 0777, tmpmode = mode;
1.89 djm 1569:
1570: if (depth >= MAX_DIR_DEPTH) {
1571: error("Maximum directory depth exceeded: %d levels", depth);
1572: return -1;
1573: }
1574:
1575: if (dirattrib == NULL &&
1576: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1577: error("Unable to stat remote directory \"%s\"", src);
1578: return -1;
1579: }
1580: if (!S_ISDIR(dirattrib->perm)) {
1581: error("\"%s\" is not a directory", src);
1582: return -1;
1583: }
1.105 djm 1584: if (print_flag)
1.124 schwarze 1585: mprintf("Retrieving %s\n", src);
1.89 djm 1586:
1.138 dtucker 1587: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
1.89 djm 1588: mode = dirattrib->perm & 01777;
1.138 dtucker 1589: tmpmode = mode | (S_IWUSR|S_IXUSR);
1590: } else {
1.89 djm 1591: debug("Server did not send permissions for "
1592: "directory \"%s\"", dst);
1593: }
1594:
1.138 dtucker 1595: if (mkdir(dst, tmpmode) == -1 && errno != EEXIST) {
1.89 djm 1596: error("mkdir %s: %s", dst, strerror(errno));
1597: return -1;
1598: }
1599:
1600: if (do_readdir(conn, src, &dir_entries) == -1) {
1601: error("%s: Failed to get directory contents", src);
1602: return -1;
1603: }
1604:
1605: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1.130 djm 1606: free(new_dst);
1607: free(new_src);
1608:
1.89 djm 1609: filename = dir_entries[i]->filename;
1610: new_dst = path_append(dst, filename);
1611: new_src = path_append(src, filename);
1612:
1613: if (S_ISDIR(dir_entries[i]->a.perm)) {
1614: if (strcmp(filename, ".") == 0 ||
1615: strcmp(filename, "..") == 0)
1616: continue;
1617: if (download_dir_internal(conn, new_src, new_dst,
1.105 djm 1618: depth + 1, &(dir_entries[i]->a), preserve_flag,
1.107 djm 1619: print_flag, resume_flag, fsync_flag) == -1)
1.89 djm 1620: ret = -1;
1621: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1622: if (do_download(conn, new_src, new_dst,
1.107 djm 1623: &(dir_entries[i]->a), preserve_flag,
1624: resume_flag, fsync_flag) == -1) {
1.89 djm 1625: error("Download of file %s to %s failed",
1626: new_src, new_dst);
1627: ret = -1;
1628: }
1629: } else
1630: logit("%s: not a regular file\n", new_src);
1631:
1632: }
1.130 djm 1633: free(new_dst);
1634: free(new_src);
1.89 djm 1635:
1.105 djm 1636: if (preserve_flag) {
1.89 djm 1637: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1638: struct timeval tv[2];
1639: tv[0].tv_sec = dirattrib->atime;
1640: tv[1].tv_sec = dirattrib->mtime;
1641: tv[0].tv_usec = tv[1].tv_usec = 0;
1642: if (utimes(dst, tv) == -1)
1643: error("Can't set times on \"%s\": %s",
1644: dst, strerror(errno));
1645: } else
1646: debug("Server did not send times for directory "
1647: "\"%s\"", dst);
1648: }
1649:
1.138 dtucker 1650: if (mode != tmpmode && chmod(dst, mode) == -1)
1651: error("Can't set final mode on \"%s\": %s", dst,
1652: strerror(errno));
1653:
1.89 djm 1654: free_sftp_dirents(dir_entries);
1655:
1656: return ret;
1657: }
1658:
1659: int
1.116 djm 1660: download_dir(struct sftp_conn *conn, const char *src, const char *dst,
1661: Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
1662: int fsync_flag)
1.89 djm 1663: {
1664: char *src_canon;
1665: int ret;
1666:
1667: if ((src_canon = do_realpath(conn, src)) == NULL) {
1.107 djm 1668: error("Unable to canonicalize path \"%s\"", src);
1.89 djm 1669: return -1;
1670: }
1671:
1.105 djm 1672: ret = download_dir_internal(conn, src_canon, dst, 0,
1.107 djm 1673: dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag);
1.98 djm 1674: free(src_canon);
1.89 djm 1675: return ret;
1676: }
1677:
1.1 djm 1678: int
1.116 djm 1679: do_upload(struct sftp_conn *conn, const char *local_path,
1680: const char *remote_path, int preserve_flag, int resume, int fsync_flag)
1.1 djm 1681: {
1.116 djm 1682: int r, local_fd;
1683: u_int status = SSH2_FX_OK;
1684: u_int id;
1685: u_char type;
1.100 dtucker 1686: off_t offset, progress_counter;
1.116 djm 1687: u_char *handle, *data;
1688: struct sshbuf *msg;
1.1 djm 1689: struct stat sb;
1.115 logan 1690: Attrib a, *c = NULL;
1.21 djm 1691: u_int32_t startid;
1692: u_int32_t ackid;
1.22 djm 1693: struct outstanding_ack {
1694: u_int id;
1695: u_int len;
1.77 djm 1696: off_t offset;
1.28 markus 1697: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1698: };
1699: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1700: struct outstanding_ack *ack = NULL;
1.116 djm 1701: size_t handle_len;
1.22 djm 1702:
1703: TAILQ_INIT(&acks);
1.1 djm 1704:
1705: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1706: error("Couldn't open local file \"%s\" for reading: %s",
1707: local_path, strerror(errno));
1708: return(-1);
1709: }
1710: if (fstat(local_fd, &sb) == -1) {
1711: error("Couldn't fstat local file \"%s\": %s",
1712: local_path, strerror(errno));
1.41 djm 1713: close(local_fd);
1714: return(-1);
1715: }
1716: if (!S_ISREG(sb.st_mode)) {
1717: error("%s is not a regular file", local_path);
1.1 djm 1718: close(local_fd);
1719: return(-1);
1720: }
1721: stat_to_attrib(&sb, &a);
1722:
1723: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1724: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1725: a.perm &= 0777;
1.105 djm 1726: if (!preserve_flag)
1.1 djm 1727: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1728:
1.115 logan 1729: if (resume) {
1730: /* Get remote file size if it exists */
1731: if ((c = do_stat(conn, remote_path, 0)) == NULL) {
1.122 djm 1732: close(local_fd);
1.115 logan 1733: return -1;
1734: }
1735:
1736: if ((off_t)c->size >= sb.st_size) {
1737: error("destination file bigger or same size as "
1738: "source file");
1739: close(local_fd);
1740: return -1;
1741: }
1742:
1743: if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
1744: close(local_fd);
1745: return -1;
1746: }
1747: }
1748:
1.116 djm 1749: if ((msg = sshbuf_new()) == NULL)
1.137 djm 1750: fatal_f("sshbuf_new failed");
1.1 djm 1751:
1752: /* Send open request */
1.23 djm 1753: id = conn->msg_id++;
1.116 djm 1754: if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1755: (r = sshbuf_put_u32(msg, id)) != 0 ||
1756: (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1757: (r = sshbuf_put_u32(msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|
1758: (resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC))) != 0 ||
1759: (r = encode_attrib(msg, &a)) != 0)
1.137 djm 1760: fatal_fr(r, "compose");
1.116 djm 1761: send_msg(conn, msg);
1.33 deraadt 1762: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1763:
1.116 djm 1764: sshbuf_reset(msg);
1.1 djm 1765:
1.93 djm 1766: handle = get_handle(conn, id, &handle_len,
1.88 djm 1767: "remote open(\"%s\")", remote_path);
1.1 djm 1768: if (handle == NULL) {
1769: close(local_fd);
1.116 djm 1770: sshbuf_free(msg);
1.80 djm 1771: return -1;
1.1 djm 1772: }
1773:
1.21 djm 1774: startid = ackid = id + 1;
1.141 ! djm 1775: data = xmalloc(conn->upload_buflen);
1.20 djm 1776:
1.1 djm 1777: /* Read from local and write to remote */
1.115 logan 1778: offset = progress_counter = (resume ? c->size : 0);
1.39 fgsch 1779: if (showprogress)
1.100 dtucker 1780: start_progress_meter(local_path, sb.st_size,
1781: &progress_counter);
1.39 fgsch 1782:
1.19 deraadt 1783: for (;;) {
1.1 djm 1784: int len;
1785:
1786: /*
1.51 deraadt 1787: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1788: * thus losing the last block of the file.
1.51 deraadt 1789: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1790: * server to drain.
1.1 djm 1791: */
1.80 djm 1792: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1793: len = 0;
1794: else do
1.141 ! djm 1795: len = read(local_fd, data, conn->upload_buflen);
1.1 djm 1796: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1797:
1798: if (len == -1)
1799: fatal("Couldn't read from \"%s\": %s", local_path,
1800: strerror(errno));
1.21 djm 1801:
1802: if (len != 0) {
1.108 djm 1803: ack = xcalloc(1, sizeof(*ack));
1.22 djm 1804: ack->id = ++id;
1805: ack->offset = offset;
1806: ack->len = len;
1807: TAILQ_INSERT_TAIL(&acks, ack, tq);
1808:
1.116 djm 1809: sshbuf_reset(msg);
1810: if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
1811: (r = sshbuf_put_u32(msg, ack->id)) != 0 ||
1812: (r = sshbuf_put_string(msg, handle,
1813: handle_len)) != 0 ||
1814: (r = sshbuf_put_u64(msg, offset)) != 0 ||
1815: (r = sshbuf_put_string(msg, data, len)) != 0)
1.137 djm 1816: fatal_fr(r, "compose");
1.116 djm 1817: send_msg(conn, msg);
1.33 deraadt 1818: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1819: id, (unsigned long long)offset, len);
1.22 djm 1820: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1821: break;
1822:
1.22 djm 1823: if (ack == NULL)
1824: fatal("Unexpected ACK %u", id);
1825:
1.28 markus 1826: if (id == startid || len == 0 ||
1.23 djm 1827: id - ackid >= conn->num_requests) {
1.116 djm 1828: u_int rid;
1.31 djm 1829:
1.116 djm 1830: sshbuf_reset(msg);
1831: get_msg(conn, msg);
1832: if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1833: (r = sshbuf_get_u32(msg, &rid)) != 0)
1.137 djm 1834: fatal_fr(r, "parse");
1.22 djm 1835:
1836: if (type != SSH2_FXP_STATUS)
1837: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1838: "got %d", SSH2_FXP_STATUS, type);
1839:
1.116 djm 1840: if ((r = sshbuf_get_u32(msg, &status)) != 0)
1.137 djm 1841: fatal_fr(r, "parse status");
1.116 djm 1842: debug3("SSH2_FXP_STATUS %u", status);
1.22 djm 1843:
1844: /* Find the request in our queue */
1.53 deraadt 1845: for (ack = TAILQ_FIRST(&acks);
1.116 djm 1846: ack != NULL && ack->id != rid;
1.22 djm 1847: ack = TAILQ_NEXT(ack, tq))
1848: ;
1849: if (ack == NULL)
1.116 djm 1850: fatal("Can't find request for ID %u", rid);
1.22 djm 1851: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1852: debug3("In write loop, ack for %u %u bytes at %lld",
1853: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1854: ++ackid;
1.100 dtucker 1855: progress_counter += ack->len;
1.98 djm 1856: free(ack);
1.1 djm 1857: }
1858: offset += len;
1.77 djm 1859: if (offset < 0)
1.137 djm 1860: fatal_f("offset < 0");
1.1 djm 1861: }
1.116 djm 1862: sshbuf_free(msg);
1.80 djm 1863:
1.39 fgsch 1864: if (showprogress)
1865: stop_progress_meter();
1.98 djm 1866: free(data);
1.1 djm 1867:
1.80 djm 1868: if (status != SSH2_FX_OK) {
1869: error("Couldn't write to remote file \"%s\": %s",
1870: remote_path, fx2txt(status));
1.116 djm 1871: status = SSH2_FX_FAILURE;
1.80 djm 1872: }
1873:
1.1 djm 1874: if (close(local_fd) == -1) {
1875: error("Couldn't close local file \"%s\": %s", local_path,
1876: strerror(errno));
1.116 djm 1877: status = SSH2_FX_FAILURE;
1.1 djm 1878: }
1879:
1.10 djm 1880: /* Override umask and utimes if asked */
1.105 djm 1881: if (preserve_flag)
1.23 djm 1882: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1883:
1.107 djm 1884: if (fsync_flag)
1885: (void)do_fsync(conn, handle, handle_len);
1886:
1.121 djm 1887: if (do_close(conn, handle, handle_len) != 0)
1.116 djm 1888: status = SSH2_FX_FAILURE;
1889:
1.98 djm 1890: free(handle);
1.5 djm 1891:
1.116 djm 1892: return status == SSH2_FX_OK ? 0 : -1;
1.1 djm 1893: }
1.89 djm 1894:
1895: static int
1.116 djm 1896: upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1897: int depth, int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1898: {
1.116 djm 1899: int ret = 0;
1.89 djm 1900: DIR *dirp;
1901: struct dirent *dp;
1.130 djm 1902: char *filename, *new_src = NULL, *new_dst = NULL;
1.89 djm 1903: struct stat sb;
1.121 djm 1904: Attrib a, *dirattrib;
1.138 dtucker 1905: u_int32_t saved_perm;
1.89 djm 1906:
1907: if (depth >= MAX_DIR_DEPTH) {
1908: error("Maximum directory depth exceeded: %d levels", depth);
1909: return -1;
1910: }
1911:
1912: if (stat(src, &sb) == -1) {
1913: error("Couldn't stat directory \"%s\": %s",
1914: src, strerror(errno));
1915: return -1;
1916: }
1917: if (!S_ISDIR(sb.st_mode)) {
1918: error("\"%s\" is not a directory", src);
1919: return -1;
1920: }
1.105 djm 1921: if (print_flag)
1.124 schwarze 1922: mprintf("Entering %s\n", src);
1.89 djm 1923:
1924: attrib_clear(&a);
1925: stat_to_attrib(&sb, &a);
1926: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1927: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1928: a.perm &= 01777;
1.105 djm 1929: if (!preserve_flag)
1.89 djm 1930: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 1931:
1.89 djm 1932: /*
1.121 djm 1933: * sftp lacks a portable status value to match errno EEXIST,
1934: * so if we get a failure back then we must check whether
1.138 dtucker 1935: * the path already existed and is a directory. Ensure we can
1936: * write to the directory we create for the duration of the transfer.
1.89 djm 1937: */
1.138 dtucker 1938: saved_perm = a.perm;
1939: a.perm |= (S_IWUSR|S_IXUSR);
1.121 djm 1940: if (do_mkdir(conn, dst, &a, 0) != 0) {
1941: if ((dirattrib = do_stat(conn, dst, 0)) == NULL)
1.89 djm 1942: return -1;
1.121 djm 1943: if (!S_ISDIR(dirattrib->perm)) {
1944: error("\"%s\" exists but is not a directory", dst);
1.89 djm 1945: return -1;
1.121 djm 1946: }
1.89 djm 1947: }
1.138 dtucker 1948: a.perm = saved_perm;
1.89 djm 1949:
1950: if ((dirp = opendir(src)) == NULL) {
1951: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1952: return -1;
1953: }
1.101 djm 1954:
1.89 djm 1955: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1956: if (dp->d_ino == 0)
1957: continue;
1.130 djm 1958: free(new_dst);
1959: free(new_src);
1.89 djm 1960: filename = dp->d_name;
1961: new_dst = path_append(dst, filename);
1962: new_src = path_append(src, filename);
1963:
1.90 dtucker 1964: if (lstat(new_src, &sb) == -1) {
1965: logit("%s: lstat failed: %s", filename,
1966: strerror(errno));
1967: ret = -1;
1968: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1969: if (strcmp(filename, ".") == 0 ||
1970: strcmp(filename, "..") == 0)
1971: continue;
1972:
1973: if (upload_dir_internal(conn, new_src, new_dst,
1.115 logan 1974: depth + 1, preserve_flag, print_flag, resume,
1.107 djm 1975: fsync_flag) == -1)
1.89 djm 1976: ret = -1;
1.90 dtucker 1977: } else if (S_ISREG(sb.st_mode)) {
1.105 djm 1978: if (do_upload(conn, new_src, new_dst,
1.115 logan 1979: preserve_flag, resume, fsync_flag) == -1) {
1.89 djm 1980: error("Uploading of file %s to %s failed!",
1981: new_src, new_dst);
1982: ret = -1;
1983: }
1984: } else
1985: logit("%s: not a regular file\n", filename);
1986: }
1.130 djm 1987: free(new_dst);
1988: free(new_src);
1.89 djm 1989:
1990: do_setstat(conn, dst, &a);
1991:
1992: (void) closedir(dirp);
1993: return ret;
1994: }
1995:
1996: int
1.116 djm 1997: upload_dir(struct sftp_conn *conn, const char *src, const char *dst,
1998: int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1999: {
2000: char *dst_canon;
2001: int ret;
2002:
2003: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1.107 djm 2004: error("Unable to canonicalize path \"%s\"", dst);
1.89 djm 2005: return -1;
2006: }
2007:
1.106 djm 2008: ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
1.115 logan 2009: print_flag, resume, fsync_flag);
1.107 djm 2010:
1.98 djm 2011: free(dst_canon);
1.89 djm 2012: return ret;
2013: }
2014:
2015: char *
1.116 djm 2016: path_append(const char *p1, const char *p2)
1.89 djm 2017: {
2018: char *ret;
2019: size_t len = strlen(p1) + strlen(p2) + 2;
2020:
2021: ret = xmalloc(len);
2022: strlcpy(ret, p1, len);
2023: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
2024: strlcat(ret, "/", len);
2025: strlcat(ret, p2, len);
2026:
2027: return(ret);
1.139 djm 2028: }
2029:
2030: char *
2031: make_absolute(char *p, const char *pwd)
2032: {
2033: char *abs_str;
2034:
2035: /* Derelativise */
2036: if (p && !path_absolute(p)) {
2037: abs_str = path_append(pwd, p);
2038: free(p);
2039: return(abs_str);
2040: } else
2041: return(p);
2042: }
2043:
2044: int
2045: remote_is_dir(struct sftp_conn *conn, const char *path)
2046: {
2047: Attrib *a;
2048:
2049: /* XXX: report errors? */
2050: if ((a = do_stat(conn, path, 1)) == NULL)
2051: return(0);
2052: if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS))
2053: return(0);
2054: return(S_ISDIR(a->perm));
2055: }
2056:
2057:
2058: int
2059: local_is_dir(const char *path)
2060: {
2061: struct stat sb;
2062:
2063: /* XXX: report errors? */
2064: if (stat(path, &sb) == -1)
2065: return(0);
2066:
2067: return(S_ISDIR(sb.st_mode));
2068: }
2069:
2070: /* Check whether path returned from glob(..., GLOB_MARK, ...) is a directory */
2071: int
2072: globpath_is_dir(const char *pathname)
2073: {
2074: size_t l = strlen(pathname);
2075:
2076: return l > 0 && pathname[l - 1] == '/';
1.89 djm 2077: }
2078:
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