Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.115
1.115 ! logan 1: /* $OpenBSD: sftp-client.c,v 1.114 2014/01/31 16:39:19 tedu 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>
1.72 stevesk 28: #include <sys/param.h>
1.82 djm 29: #include <sys/statvfs.h>
1.74 deraadt 30: #include <sys/uio.h>
1.66 stevesk 31:
1.89 djm 32: #include <dirent.h>
1.67 stevesk 33: #include <errno.h>
1.66 stevesk 34: #include <fcntl.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"
1.1 djm 43: #include "buffer.h"
44: #include "log.h"
45: #include "atomicio.h"
1.39 fgsch 46: #include "progressmeter.h"
1.64 djm 47: #include "misc.h"
1.1 djm 48:
49: #include "sftp.h"
50: #include "sftp-common.h"
51: #include "sftp-client.h"
52:
1.49 djm 53: extern volatile sig_atomic_t interrupted;
1.39 fgsch 54: extern int showprogress;
55:
1.59 david 56: /* Minimum amount of data to read at a time */
1.21 djm 57: #define MIN_READ_SIZE 512
58:
1.89 djm 59: /* Maximum depth to descend in directory trees */
60: #define MAX_DIR_DEPTH 64
61:
1.23 djm 62: struct sftp_conn {
63: int fd_in;
64: int fd_out;
65: u_int transfer_buflen;
66: u_int num_requests;
67: u_int version;
68: u_int msg_id;
1.82 djm 69: #define SFTP_EXT_POSIX_RENAME 0x00000001
70: #define SFTP_EXT_STATVFS 0x00000002
71: #define SFTP_EXT_FSTATVFS 0x00000004
1.94 djm 72: #define SFTP_EXT_HARDLINK 0x00000008
1.107 djm 73: #define SFTP_EXT_FSYNC 0x00000010
1.81 djm 74: u_int exts;
1.93 djm 75: u_int64_t limit_kbps;
76: struct bwlimit bwlimit_in, bwlimit_out;
1.23 djm 77: };
1.4 djm 78:
1.88 djm 79: static char *
1.93 djm 80: get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
81: const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
82:
83: /* ARGSUSED */
84: static int
85: sftpio(void *_bwlimit, size_t amount)
86: {
87: struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
88:
89: bandwidth_limit(bwlimit, amount);
90: return 0;
91: }
1.88 djm 92:
1.17 itojun 93: static void
1.93 djm 94: send_msg(struct sftp_conn *conn, Buffer *m)
1.1 djm 95: {
1.40 djm 96: u_char mlen[4];
1.65 djm 97: struct iovec iov[2];
1.40 djm 98:
1.58 djm 99: if (buffer_len(m) > SFTP_MAX_MSG_LENGTH)
1.40 djm 100: fatal("Outbound message too long %u", buffer_len(m));
101:
102: /* Send length first */
1.64 djm 103: put_u32(mlen, buffer_len(m));
1.65 djm 104: iov[0].iov_base = mlen;
105: iov[0].iov_len = sizeof(mlen);
106: iov[1].iov_base = buffer_ptr(m);
107: iov[1].iov_len = buffer_len(m);
1.74 deraadt 108:
1.93 djm 109: if (atomiciov6(writev, conn->fd_out, iov, 2,
1.101 djm 110: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
1.93 djm 111: buffer_len(m) + sizeof(mlen))
1.1 djm 112: fatal("Couldn't send packet: %s", strerror(errno));
113:
1.40 djm 114: buffer_clear(m);
1.1 djm 115: }
116:
1.17 itojun 117: static void
1.93 djm 118: get_msg(struct sftp_conn *conn, Buffer *m)
1.1 djm 119: {
1.40 djm 120: u_int msg_len;
1.1 djm 121:
1.40 djm 122: buffer_append_space(m, 4);
1.93 djm 123: if (atomicio6(read, conn->fd_in, buffer_ptr(m), 4,
124: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) {
1.54 avsm 125: if (errno == EPIPE)
126: fatal("Connection closed");
127: else
128: fatal("Couldn't read packet: %s", strerror(errno));
129: }
1.1 djm 130:
1.40 djm 131: msg_len = buffer_get_int(m);
1.58 djm 132: if (msg_len > SFTP_MAX_MSG_LENGTH)
1.33 deraadt 133: fatal("Received message too long %u", msg_len);
1.1 djm 134:
1.40 djm 135: buffer_append_space(m, msg_len);
1.93 djm 136: if (atomicio6(read, conn->fd_in, buffer_ptr(m), msg_len,
137: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
138: != msg_len) {
1.54 avsm 139: if (errno == EPIPE)
140: fatal("Connection closed");
141: else
142: fatal("Read packet: %s", strerror(errno));
143: }
1.1 djm 144: }
145:
1.17 itojun 146: static void
1.93 djm 147: send_string_request(struct sftp_conn *conn, u_int id, u_int code, char *s,
1.1 djm 148: u_int len)
149: {
150: Buffer msg;
151:
152: buffer_init(&msg);
153: buffer_put_char(&msg, code);
154: buffer_put_int(&msg, id);
155: buffer_put_string(&msg, s, len);
1.93 djm 156: send_msg(conn, &msg);
157: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.1 djm 158: buffer_free(&msg);
159: }
160:
1.17 itojun 161: static void
1.93 djm 162: send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
163: char *s, u_int len, Attrib *a)
1.1 djm 164: {
165: Buffer msg;
166:
167: buffer_init(&msg);
168: buffer_put_char(&msg, code);
169: buffer_put_int(&msg, id);
170: buffer_put_string(&msg, s, len);
171: encode_attrib(&msg, a);
1.93 djm 172: send_msg(conn, &msg);
173: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.1 djm 174: buffer_free(&msg);
175: }
176:
1.17 itojun 177: static u_int
1.93 djm 178: get_status(struct sftp_conn *conn, u_int expected_id)
1.1 djm 179: {
180: Buffer msg;
181: u_int type, id, status;
182:
183: buffer_init(&msg);
1.93 djm 184: get_msg(conn, &msg);
1.1 djm 185: type = buffer_get_char(&msg);
186: id = buffer_get_int(&msg);
187:
188: if (id != expected_id)
1.33 deraadt 189: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 190: if (type != SSH2_FXP_STATUS)
1.33 deraadt 191: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 192: SSH2_FXP_STATUS, type);
193:
194: status = buffer_get_int(&msg);
195: buffer_free(&msg);
196:
1.33 deraadt 197: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 198:
1.93 djm 199: return status;
1.1 djm 200: }
201:
1.17 itojun 202: static char *
1.93 djm 203: get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
204: const char *errfmt, ...)
1.1 djm 205: {
206: Buffer msg;
207: u_int type, id;
1.88 djm 208: char *handle, errmsg[256];
209: va_list args;
210: int status;
211:
212: va_start(args, errfmt);
213: if (errfmt != NULL)
214: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
215: va_end(args);
1.1 djm 216:
217: buffer_init(&msg);
1.93 djm 218: get_msg(conn, &msg);
1.1 djm 219: type = buffer_get_char(&msg);
220: id = buffer_get_int(&msg);
221:
222: if (id != expected_id)
1.88 djm 223: fatal("%s: ID mismatch (%u != %u)",
224: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 225: if (type == SSH2_FXP_STATUS) {
1.88 djm 226: status = buffer_get_int(&msg);
227: if (errfmt != NULL)
228: error("%s: %s", errmsg, fx2txt(status));
1.52 markus 229: buffer_free(&msg);
1.1 djm 230: return(NULL);
231: } else if (type != SSH2_FXP_HANDLE)
1.88 djm 232: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
233: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 234:
235: handle = buffer_get_string(&msg, len);
236: buffer_free(&msg);
237:
238: return(handle);
239: }
240:
1.17 itojun 241: static Attrib *
1.93 djm 242: get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
1.1 djm 243: {
244: Buffer msg;
245: u_int type, id;
246: Attrib *a;
247:
248: buffer_init(&msg);
1.93 djm 249: get_msg(conn, &msg);
1.1 djm 250:
251: type = buffer_get_char(&msg);
252: id = buffer_get_int(&msg);
253:
1.33 deraadt 254: debug3("Received stat reply T:%u I:%u", type, id);
1.1 djm 255: if (id != expected_id)
1.33 deraadt 256: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 257: if (type == SSH2_FXP_STATUS) {
258: int status = buffer_get_int(&msg);
259:
1.14 djm 260: if (quiet)
261: debug("Couldn't stat remote file: %s", fx2txt(status));
262: else
263: error("Couldn't stat remote file: %s", fx2txt(status));
1.52 markus 264: buffer_free(&msg);
1.1 djm 265: return(NULL);
266: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 267: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 268: SSH2_FXP_ATTRS, type);
269: }
270: a = decode_attrib(&msg);
271: buffer_free(&msg);
272:
273: return(a);
274: }
275:
1.82 djm 276: static int
1.93 djm 277: get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
278: u_int expected_id, int quiet)
1.82 djm 279: {
280: Buffer msg;
281: u_int type, id, flag;
282:
283: buffer_init(&msg);
1.93 djm 284: get_msg(conn, &msg);
1.82 djm 285:
286: type = buffer_get_char(&msg);
287: id = buffer_get_int(&msg);
288:
289: debug3("Received statvfs reply T:%u I:%u", type, id);
290: if (id != expected_id)
291: fatal("ID mismatch (%u != %u)", id, expected_id);
292: if (type == SSH2_FXP_STATUS) {
293: int status = buffer_get_int(&msg);
294:
295: if (quiet)
296: debug("Couldn't statvfs: %s", fx2txt(status));
297: else
298: error("Couldn't statvfs: %s", fx2txt(status));
299: buffer_free(&msg);
300: return -1;
301: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
302: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
303: SSH2_FXP_EXTENDED_REPLY, type);
304: }
305:
1.114 tedu 306: memset(st, 0, sizeof(*st));
1.84 dtucker 307: st->f_bsize = buffer_get_int64(&msg);
308: st->f_frsize = buffer_get_int64(&msg);
1.82 djm 309: st->f_blocks = buffer_get_int64(&msg);
310: st->f_bfree = buffer_get_int64(&msg);
311: st->f_bavail = buffer_get_int64(&msg);
312: st->f_files = buffer_get_int64(&msg);
313: st->f_ffree = buffer_get_int64(&msg);
314: st->f_favail = buffer_get_int64(&msg);
1.83 djm 315: st->f_fsid = buffer_get_int64(&msg);
1.84 dtucker 316: flag = buffer_get_int64(&msg);
317: st->f_namemax = buffer_get_int64(&msg);
1.82 djm 318:
319: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
320: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
321:
322: buffer_free(&msg);
323:
324: return 0;
325: }
326:
1.23 djm 327: struct sftp_conn *
1.93 djm 328: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
329: u_int64_t limit_kbps)
1.1 djm 330: {
1.93 djm 331: u_int type;
1.1 djm 332: Buffer msg;
1.23 djm 333: struct sftp_conn *ret;
1.1 djm 334:
1.103 djm 335: ret = xcalloc(1, sizeof(*ret));
336: ret->msg_id = 1;
1.93 djm 337: ret->fd_in = fd_in;
338: ret->fd_out = fd_out;
339: ret->transfer_buflen = transfer_buflen;
340: ret->num_requests = num_requests;
341: ret->exts = 0;
342: ret->limit_kbps = 0;
343:
1.1 djm 344: buffer_init(&msg);
345: buffer_put_char(&msg, SSH2_FXP_INIT);
346: buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
1.93 djm 347: send_msg(ret, &msg);
1.1 djm 348:
349: buffer_clear(&msg);
350:
1.93 djm 351: get_msg(ret, &msg);
1.1 djm 352:
1.3 stevesk 353: /* Expecting a VERSION reply */
1.1 djm 354: if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) {
1.33 deraadt 355: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 356: type);
357: buffer_free(&msg);
1.23 djm 358: return(NULL);
1.1 djm 359: }
1.93 djm 360: ret->version = buffer_get_int(&msg);
1.1 djm 361:
1.93 djm 362: debug2("Remote version: %u", ret->version);
1.1 djm 363:
364: /* Check for extensions */
365: while (buffer_len(&msg) > 0) {
366: char *name = buffer_get_string(&msg, NULL);
367: char *value = buffer_get_string(&msg, NULL);
1.85 djm 368: int known = 0;
1.1 djm 369:
1.82 djm 370: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.85 djm 371: strcmp(value, "1") == 0) {
1.93 djm 372: ret->exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 373: known = 1;
374: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
375: strcmp(value, "2") == 0) {
1.93 djm 376: ret->exts |= SFTP_EXT_STATVFS;
1.85 djm 377: known = 1;
1.94 djm 378: } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
1.85 djm 379: strcmp(value, "2") == 0) {
1.93 djm 380: ret->exts |= SFTP_EXT_FSTATVFS;
1.85 djm 381: known = 1;
1.94 djm 382: } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
383: strcmp(value, "1") == 0) {
384: ret->exts |= SFTP_EXT_HARDLINK;
385: known = 1;
1.107 djm 386: } else if (strcmp(name, "fsync@openssh.com") == 0 &&
387: strcmp(value, "1") == 0) {
388: ret->exts |= SFTP_EXT_FSYNC;
389: known = 1;
1.85 djm 390: }
391: if (known) {
392: debug2("Server supports extension \"%s\" revision %s",
393: name, value);
394: } else {
395: debug2("Unrecognised server extension \"%s\"", name);
396: }
1.98 djm 397: free(name);
398: free(value);
1.1 djm 399: }
400:
401: buffer_free(&msg);
1.11 djm 402:
1.23 djm 403: /* Some filexfer v.0 servers don't support large packets */
1.93 djm 404: if (ret->version == 0)
1.29 markus 405: ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
1.23 djm 406:
1.93 djm 407: ret->limit_kbps = limit_kbps;
408: if (ret->limit_kbps > 0) {
409: bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
410: ret->transfer_buflen);
411: bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
412: ret->transfer_buflen);
413: }
414:
415: return ret;
1.23 djm 416: }
417:
418: u_int
419: sftp_proto_version(struct sftp_conn *conn)
420: {
1.93 djm 421: return conn->version;
1.1 djm 422: }
423:
424: int
1.23 djm 425: do_close(struct sftp_conn *conn, char *handle, u_int handle_len)
1.1 djm 426: {
427: u_int id, status;
428: Buffer msg;
429:
430: buffer_init(&msg);
431:
1.23 djm 432: id = conn->msg_id++;
1.1 djm 433: buffer_put_char(&msg, SSH2_FXP_CLOSE);
434: buffer_put_int(&msg, id);
435: buffer_put_string(&msg, handle, handle_len);
1.93 djm 436: send_msg(conn, &msg);
1.33 deraadt 437: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 438:
1.93 djm 439: status = get_status(conn, id);
1.1 djm 440: if (status != SSH2_FX_OK)
441: error("Couldn't close file: %s", fx2txt(status));
442:
443: buffer_free(&msg);
444:
1.93 djm 445: return status;
1.1 djm 446: }
447:
1.12 djm 448:
1.17 itojun 449: static int
1.105 djm 450: do_lsreaddir(struct sftp_conn *conn, char *path, int print_flag,
1.12 djm 451: SFTP_DIRENT ***dir)
1.1 djm 452: {
453: Buffer msg;
1.55 djm 454: u_int count, type, id, handle_len, i, expected_id, ents = 0;
1.1 djm 455: char *handle;
1.111 djm 456: int status = SSH2_FX_FAILURE;
457:
458: if (dir)
459: *dir = NULL;
1.1 djm 460:
1.23 djm 461: id = conn->msg_id++;
1.1 djm 462:
463: buffer_init(&msg);
464: buffer_put_char(&msg, SSH2_FXP_OPENDIR);
465: buffer_put_int(&msg, id);
466: buffer_put_cstring(&msg, path);
1.93 djm 467: send_msg(conn, &msg);
1.1 djm 468:
1.93 djm 469: handle = get_handle(conn, id, &handle_len,
1.88 djm 470: "remote readdir(\"%s\")", path);
1.96 markus 471: if (handle == NULL) {
472: buffer_free(&msg);
1.93 djm 473: return -1;
1.96 markus 474: }
1.1 djm 475:
1.12 djm 476: if (dir) {
477: ents = 0;
1.108 djm 478: *dir = xcalloc(1, sizeof(**dir));
1.12 djm 479: (*dir)[0] = NULL;
480: }
481:
1.49 djm 482: for (; !interrupted;) {
1.23 djm 483: id = expected_id = conn->msg_id++;
1.1 djm 484:
1.33 deraadt 485: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 486:
487: buffer_clear(&msg);
488: buffer_put_char(&msg, SSH2_FXP_READDIR);
489: buffer_put_int(&msg, id);
490: buffer_put_string(&msg, handle, handle_len);
1.93 djm 491: send_msg(conn, &msg);
1.1 djm 492:
493: buffer_clear(&msg);
494:
1.93 djm 495: get_msg(conn, &msg);
1.1 djm 496:
497: type = buffer_get_char(&msg);
498: id = buffer_get_int(&msg);
499:
1.33 deraadt 500: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 501:
502: if (id != expected_id)
1.33 deraadt 503: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 504:
505: if (type == SSH2_FXP_STATUS) {
1.111 djm 506: status = buffer_get_int(&msg);
1.1 djm 507: debug3("Received SSH2_FXP_STATUS %d", status);
1.111 djm 508: if (status == SSH2_FX_EOF)
1.1 djm 509: break;
1.111 djm 510: error("Couldn't read directory: %s", fx2txt(status));
511: goto out;
1.1 djm 512: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 513: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 514: SSH2_FXP_NAME, type);
515:
516: count = buffer_get_int(&msg);
1.7 markus 517: if (count == 0)
518: break;
1.8 stevesk 519: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 520: for (i = 0; i < count; i++) {
1.1 djm 521: char *filename, *longname;
522: Attrib *a;
523:
524: filename = buffer_get_string(&msg, NULL);
525: longname = buffer_get_string(&msg, NULL);
526: a = decode_attrib(&msg);
527:
1.105 djm 528: if (print_flag)
1.12 djm 529: printf("%s\n", longname);
530:
1.89 djm 531: /*
532: * Directory entries should never contain '/'
533: * These can be used to attack recursive ops
534: * (e.g. send '../../../../etc/passwd')
535: */
536: if (strchr(filename, '/') != NULL) {
537: error("Server sent suspect path \"%s\" "
538: "during readdir of \"%s\"", filename, path);
1.111 djm 539: } else if (dir) {
1.62 djm 540: *dir = xrealloc(*dir, ents + 2, sizeof(**dir));
1.108 djm 541: (*dir)[ents] = xcalloc(1, sizeof(***dir));
1.12 djm 542: (*dir)[ents]->filename = xstrdup(filename);
543: (*dir)[ents]->longname = xstrdup(longname);
544: memcpy(&(*dir)[ents]->a, a, sizeof(*a));
545: (*dir)[++ents] = NULL;
546: }
1.98 djm 547: free(filename);
548: free(longname);
1.1 djm 549: }
550: }
1.111 djm 551: status = 0;
1.1 djm 552:
1.111 djm 553: out:
1.1 djm 554: buffer_free(&msg);
1.23 djm 555: do_close(conn, handle, handle_len);
1.98 djm 556: free(handle);
1.1 djm 557:
1.111 djm 558: if (status != 0 && dir != NULL) {
559: /* Don't return results on error */
560: free_sftp_dirents(*dir);
561: *dir = NULL;
562: } else if (interrupted && dir != NULL && *dir != NULL) {
563: /* Don't return partial matches on interrupt */
1.49 djm 564: free_sftp_dirents(*dir);
1.108 djm 565: *dir = xcalloc(1, sizeof(**dir));
1.49 djm 566: **dir = NULL;
567: }
568:
1.111 djm 569: return status;
1.12 djm 570: }
571:
572: int
1.23 djm 573: do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir)
1.12 djm 574: {
1.23 djm 575: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 576: }
577:
578: void free_sftp_dirents(SFTP_DIRENT **s)
579: {
580: int i;
1.19 deraadt 581:
1.111 djm 582: if (s == NULL)
583: return;
1.19 deraadt 584: for (i = 0; s[i]; i++) {
1.98 djm 585: free(s[i]->filename);
586: free(s[i]->longname);
587: free(s[i]);
1.12 djm 588: }
1.98 djm 589: free(s);
1.12 djm 590: }
591:
592: int
1.23 djm 593: do_rm(struct sftp_conn *conn, char *path)
1.1 djm 594: {
595: u_int status, id;
596:
597: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
598:
1.23 djm 599: id = conn->msg_id++;
1.93 djm 600: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
601: status = get_status(conn, id);
1.1 djm 602: if (status != SSH2_FX_OK)
603: error("Couldn't delete file: %s", fx2txt(status));
604: return(status);
605: }
606:
607: int
1.105 djm 608: do_mkdir(struct sftp_conn *conn, char *path, Attrib *a, int print_flag)
1.1 djm 609: {
610: u_int status, id;
611:
1.23 djm 612: id = conn->msg_id++;
1.93 djm 613: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 614: strlen(path), a);
615:
1.93 djm 616: status = get_status(conn, id);
1.105 djm 617: if (status != SSH2_FX_OK && print_flag)
1.1 djm 618: error("Couldn't create directory: %s", fx2txt(status));
619:
620: return(status);
621: }
622:
623: int
1.23 djm 624: do_rmdir(struct sftp_conn *conn, char *path)
1.1 djm 625: {
626: u_int status, id;
627:
1.23 djm 628: id = conn->msg_id++;
1.93 djm 629: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 630: strlen(path));
1.1 djm 631:
1.93 djm 632: status = get_status(conn, id);
1.1 djm 633: if (status != SSH2_FX_OK)
634: error("Couldn't remove directory: %s", fx2txt(status));
635:
636: return(status);
637: }
638:
639: Attrib *
1.23 djm 640: do_stat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 641: {
642: u_int id;
643:
1.23 djm 644: id = conn->msg_id++;
645:
1.93 djm 646: send_string_request(conn, id,
1.28 markus 647: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 648: path, strlen(path));
649:
1.93 djm 650: return(get_decode_stat(conn, id, quiet));
1.1 djm 651: }
652:
653: Attrib *
1.23 djm 654: do_lstat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 655: {
656: u_int id;
657:
1.23 djm 658: if (conn->version == 0) {
659: if (quiet)
660: debug("Server version does not support lstat operation");
661: else
1.43 itojun 662: logit("Server version does not support lstat operation");
1.30 markus 663: return(do_stat(conn, path, quiet));
1.23 djm 664: }
665:
666: id = conn->msg_id++;
1.93 djm 667: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 668: strlen(path));
669:
1.93 djm 670: return(get_decode_stat(conn, id, quiet));
1.1 djm 671: }
672:
1.78 chl 673: #ifdef notyet
1.1 djm 674: Attrib *
1.23 djm 675: do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet)
1.1 djm 676: {
677: u_int id;
678:
1.23 djm 679: id = conn->msg_id++;
1.93 djm 680: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 681: handle_len);
682:
1.93 djm 683: return(get_decode_stat(conn, id, quiet));
1.1 djm 684: }
1.78 chl 685: #endif
1.1 djm 686:
687: int
1.23 djm 688: do_setstat(struct sftp_conn *conn, char *path, Attrib *a)
1.1 djm 689: {
690: u_int status, id;
691:
1.23 djm 692: id = conn->msg_id++;
1.93 djm 693: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 694: strlen(path), a);
695:
1.93 djm 696: status = get_status(conn, id);
1.1 djm 697: if (status != SSH2_FX_OK)
698: error("Couldn't setstat on \"%s\": %s", path,
699: fx2txt(status));
700:
701: return(status);
702: }
703:
704: int
1.23 djm 705: do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
1.1 djm 706: Attrib *a)
707: {
708: u_int status, id;
709:
1.23 djm 710: id = conn->msg_id++;
1.93 djm 711: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 712: handle_len, a);
713:
1.93 djm 714: status = get_status(conn, id);
1.1 djm 715: if (status != SSH2_FX_OK)
716: error("Couldn't fsetstat: %s", fx2txt(status));
717:
718: return(status);
719: }
720:
721: char *
1.23 djm 722: do_realpath(struct sftp_conn *conn, char *path)
1.1 djm 723: {
724: Buffer msg;
725: u_int type, expected_id, count, id;
726: char *filename, *longname;
727: Attrib *a;
728:
1.23 djm 729: expected_id = id = conn->msg_id++;
1.93 djm 730: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 731: strlen(path));
1.1 djm 732:
733: buffer_init(&msg);
734:
1.93 djm 735: get_msg(conn, &msg);
1.1 djm 736: type = buffer_get_char(&msg);
737: id = buffer_get_int(&msg);
738:
739: if (id != expected_id)
1.33 deraadt 740: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 741:
742: if (type == SSH2_FXP_STATUS) {
743: u_int status = buffer_get_int(&msg);
744:
1.107 djm 745: error("Couldn't canonicalize: %s", fx2txt(status));
1.91 djm 746: buffer_free(&msg);
747: return NULL;
1.1 djm 748: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 749: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 750: SSH2_FXP_NAME, type);
751:
752: count = buffer_get_int(&msg);
753: if (count != 1)
754: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
755:
756: filename = buffer_get_string(&msg, NULL);
757: longname = buffer_get_string(&msg, NULL);
758: a = decode_attrib(&msg);
759:
1.97 dtucker 760: debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
761: (unsigned long)a->size);
1.1 djm 762:
1.98 djm 763: free(longname);
1.1 djm 764:
765: buffer_free(&msg);
766:
767: return(filename);
768: }
769:
770: int
1.102 djm 771: do_rename(struct sftp_conn *conn, char *oldpath, char *newpath,
772: int force_legacy)
1.1 djm 773: {
774: Buffer msg;
775: u_int status, id;
1.102 djm 776: int use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
1.1 djm 777:
778: buffer_init(&msg);
779:
780: /* Send rename request */
1.23 djm 781: id = conn->msg_id++;
1.102 djm 782: if (use_ext) {
1.81 djm 783: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
784: buffer_put_int(&msg, id);
785: buffer_put_cstring(&msg, "posix-rename@openssh.com");
786: } else {
787: buffer_put_char(&msg, SSH2_FXP_RENAME);
788: buffer_put_int(&msg, id);
789: }
1.1 djm 790: buffer_put_cstring(&msg, oldpath);
791: buffer_put_cstring(&msg, newpath);
1.93 djm 792: send_msg(conn, &msg);
1.81 djm 793: debug3("Sent message %s \"%s\" -> \"%s\"",
1.102 djm 794: use_ext ? "posix-rename@openssh.com" : "SSH2_FXP_RENAME",
795: oldpath, newpath);
1.1 djm 796: buffer_free(&msg);
797:
1.93 djm 798: status = get_status(conn, id);
1.1 djm 799: if (status != SSH2_FX_OK)
1.23 djm 800: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 801: newpath, fx2txt(status));
802:
803: return(status);
804: }
805:
806: int
807: do_hardlink(struct sftp_conn *conn, char *oldpath, char *newpath)
808: {
809: Buffer msg;
810: u_int status, id;
811:
812: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
813: error("Server does not support hardlink@openssh.com extension");
814: return -1;
815: }
816:
1.95 markus 817: buffer_init(&msg);
818:
819: /* Send link request */
820: id = conn->msg_id++;
1.94 djm 821: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
822: buffer_put_int(&msg, id);
823: buffer_put_cstring(&msg, "hardlink@openssh.com");
824: buffer_put_cstring(&msg, oldpath);
825: buffer_put_cstring(&msg, newpath);
826: send_msg(conn, &msg);
827: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
828: oldpath, newpath);
829: buffer_free(&msg);
830:
831: status = get_status(conn, id);
832: if (status != SSH2_FX_OK)
833: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 834: newpath, fx2txt(status));
1.1 djm 835:
836: return(status);
1.11 djm 837: }
838:
839: int
1.23 djm 840: do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
1.11 djm 841: {
842: Buffer msg;
843: u_int status, id;
844:
1.23 djm 845: if (conn->version < 3) {
846: error("This server does not support the symlink operation");
847: return(SSH2_FX_OP_UNSUPPORTED);
848: }
849:
1.11 djm 850: buffer_init(&msg);
851:
1.48 djm 852: /* Send symlink request */
1.23 djm 853: id = conn->msg_id++;
1.11 djm 854: buffer_put_char(&msg, SSH2_FXP_SYMLINK);
855: buffer_put_int(&msg, id);
856: buffer_put_cstring(&msg, oldpath);
857: buffer_put_cstring(&msg, newpath);
1.93 djm 858: send_msg(conn, &msg);
1.11 djm 859: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
860: newpath);
861: buffer_free(&msg);
862:
1.93 djm 863: status = get_status(conn, id);
1.11 djm 864: if (status != SSH2_FX_OK)
1.36 markus 865: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 866: newpath, fx2txt(status));
1.11 djm 867:
868: return(status);
869: }
870:
1.107 djm 871: int
872: do_fsync(struct sftp_conn *conn, char *handle, u_int handle_len)
873: {
874: Buffer msg;
875: u_int status, id;
876:
877: /* Silently return if the extension is not supported */
878: if ((conn->exts & SFTP_EXT_FSYNC) == 0)
879: return -1;
880:
881: buffer_init(&msg);
882:
883: /* Send fsync request */
884: id = conn->msg_id++;
885:
886: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
887: buffer_put_int(&msg, id);
888: buffer_put_cstring(&msg, "fsync@openssh.com");
889: buffer_put_string(&msg, handle, handle_len);
890: send_msg(conn, &msg);
891: debug3("Sent message fsync@openssh.com I:%u", id);
892: buffer_free(&msg);
893:
894: status = get_status(conn, id);
895: if (status != SSH2_FX_OK)
896: error("Couldn't sync file: %s", fx2txt(status));
897:
898: return status;
899: }
900:
1.78 chl 901: #ifdef notyet
1.11 djm 902: char *
1.23 djm 903: do_readlink(struct sftp_conn *conn, char *path)
1.11 djm 904: {
905: Buffer msg;
906: u_int type, expected_id, count, id;
907: char *filename, *longname;
908: Attrib *a;
909:
1.23 djm 910: expected_id = id = conn->msg_id++;
1.93 djm 911: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 912:
913: buffer_init(&msg);
914:
1.93 djm 915: get_msg(conn, &msg);
1.11 djm 916: type = buffer_get_char(&msg);
917: id = buffer_get_int(&msg);
918:
919: if (id != expected_id)
1.33 deraadt 920: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 921:
922: if (type == SSH2_FXP_STATUS) {
923: u_int status = buffer_get_int(&msg);
924:
925: error("Couldn't readlink: %s", fx2txt(status));
1.95 markus 926: buffer_free(&msg);
1.11 djm 927: return(NULL);
928: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 929: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 930: SSH2_FXP_NAME, type);
931:
932: count = buffer_get_int(&msg);
933: if (count != 1)
934: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
935:
936: filename = buffer_get_string(&msg, NULL);
937: longname = buffer_get_string(&msg, NULL);
938: a = decode_attrib(&msg);
939:
940: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
941:
1.98 djm 942: free(longname);
1.11 djm 943:
944: buffer_free(&msg);
945:
946: return(filename);
1.82 djm 947: }
948: #endif
949:
950: int
1.84 dtucker 951: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 952: int quiet)
953: {
954: Buffer msg;
955: u_int id;
956:
957: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
958: error("Server does not support statvfs@openssh.com extension");
959: return -1;
960: }
961:
962: id = conn->msg_id++;
963:
964: buffer_init(&msg);
965: buffer_clear(&msg);
966: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
967: buffer_put_int(&msg, id);
968: buffer_put_cstring(&msg, "statvfs@openssh.com");
969: buffer_put_cstring(&msg, path);
1.93 djm 970: send_msg(conn, &msg);
1.82 djm 971: buffer_free(&msg);
972:
1.93 djm 973: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 974: }
975:
976: #ifdef notyet
977: int
978: do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len,
1.84 dtucker 979: struct sftp_statvfs *st, int quiet)
1.82 djm 980: {
981: Buffer msg;
982: u_int id;
983:
984: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
985: error("Server does not support fstatvfs@openssh.com extension");
986: return -1;
987: }
988:
989: id = conn->msg_id++;
990:
991: buffer_init(&msg);
992: buffer_clear(&msg);
993: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
994: buffer_put_int(&msg, id);
995: buffer_put_cstring(&msg, "fstatvfs@openssh.com");
996: buffer_put_string(&msg, handle, handle_len);
1.93 djm 997: send_msg(conn, &msg);
1.82 djm 998: buffer_free(&msg);
999:
1.93 djm 1000: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 1001: }
1.78 chl 1002: #endif
1.1 djm 1003:
1.21 djm 1004: static void
1.93 djm 1005: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
1006: u_int len, char *handle, u_int handle_len)
1.21 djm 1007: {
1008: Buffer msg;
1.28 markus 1009:
1.21 djm 1010: buffer_init(&msg);
1011: buffer_clear(&msg);
1012: buffer_put_char(&msg, SSH2_FXP_READ);
1013: buffer_put_int(&msg, id);
1014: buffer_put_string(&msg, handle, handle_len);
1015: buffer_put_int64(&msg, offset);
1016: buffer_put_int(&msg, len);
1.93 djm 1017: send_msg(conn, &msg);
1.21 djm 1018: buffer_free(&msg);
1.28 markus 1019: }
1.21 djm 1020:
1.1 djm 1021: int
1.23 djm 1022: do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
1.107 djm 1023: Attrib *a, int preserve_flag, int resume_flag, int fsync_flag)
1.1 djm 1024: {
1.89 djm 1025: Attrib junk;
1.21 djm 1026: Buffer msg;
1.1 djm 1027: char *handle;
1.101 djm 1028: int local_fd = -1, status = 0, write_error;
1029: int read_error, write_errno, reordered = 0;
1030: u_int64_t offset = 0, size, highwater;
1.55 djm 1031: u_int handle_len, mode, type, id, buflen, num_req, max_req;
1.39 fgsch 1032: off_t progress_counter;
1.101 djm 1033: struct stat st;
1.21 djm 1034: struct request {
1035: u_int id;
1036: u_int len;
1037: u_int64_t offset;
1.28 markus 1038: TAILQ_ENTRY(request) tq;
1.21 djm 1039: };
1040: TAILQ_HEAD(reqhead, request) requests;
1041: struct request *req;
1042:
1043: TAILQ_INIT(&requests);
1.1 djm 1044:
1.89 djm 1045: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1046: return -1;
1.1 djm 1047:
1.86 djm 1048: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1049: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1050: mode = a->perm & 0777;
1.1 djm 1051: else
1052: mode = 0666;
1053:
1.14 djm 1054: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1055: (!S_ISREG(a->perm))) {
1056: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1057: return(-1);
1058: }
1059:
1.21 djm 1060: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1061: size = a->size;
1062: else
1063: size = 0;
1064:
1.23 djm 1065: buflen = conn->transfer_buflen;
1.1 djm 1066: buffer_init(&msg);
1067:
1068: /* Send open request */
1.23 djm 1069: id = conn->msg_id++;
1.1 djm 1070: buffer_put_char(&msg, SSH2_FXP_OPEN);
1071: buffer_put_int(&msg, id);
1072: buffer_put_cstring(&msg, remote_path);
1073: buffer_put_int(&msg, SSH2_FXF_READ);
1074: attrib_clear(&junk); /* Send empty attributes */
1075: encode_attrib(&msg, &junk);
1.93 djm 1076: send_msg(conn, &msg);
1.33 deraadt 1077: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1078:
1.93 djm 1079: handle = get_handle(conn, id, &handle_len,
1.88 djm 1080: "remote open(\"%s\")", remote_path);
1.1 djm 1081: if (handle == NULL) {
1082: buffer_free(&msg);
1083: return(-1);
1084: }
1085:
1.105 djm 1086: local_fd = open(local_path,
1087: O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
1.23 djm 1088: if (local_fd == -1) {
1089: error("Couldn't open local file \"%s\" for writing: %s",
1090: local_path, strerror(errno));
1.101 djm 1091: goto fail;
1092: }
1093: offset = highwater = 0;
1.105 djm 1094: if (resume_flag) {
1.101 djm 1095: if (fstat(local_fd, &st) == -1) {
1096: error("Unable to stat local file \"%s\": %s",
1097: local_path, strerror(errno));
1098: goto fail;
1099: }
1.113 djm 1100: if (st.st_size < 0) {
1101: error("\"%s\" has negative size", local_path);
1102: goto fail;
1103: }
1104: if ((u_int64_t)st.st_size > size) {
1.101 djm 1105: error("Unable to resume download of \"%s\": "
1106: "local file is larger than remote", local_path);
1107: fail:
1108: do_close(conn, handle, handle_len);
1109: buffer_free(&msg);
1110: free(handle);
1.110 djm 1111: if (local_fd != -1)
1112: close(local_fd);
1.101 djm 1113: return -1;
1114: }
1115: offset = highwater = st.st_size;
1.23 djm 1116: }
1117:
1.1 djm 1118: /* Read from remote and write to local */
1.101 djm 1119: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1120: max_req = 1;
1.101 djm 1121: progress_counter = offset;
1.39 fgsch 1122:
1.47 djm 1123: if (showprogress && size != 0)
1124: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1125:
1.21 djm 1126: while (num_req > 0 || max_req > 0) {
1127: char *data;
1.1 djm 1128: u_int len;
1129:
1.49 djm 1130: /*
1.51 deraadt 1131: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1132: * allow outstanding requests to drain gracefully
1133: */
1134: if (interrupted) {
1135: if (num_req == 0) /* If we haven't started yet... */
1136: break;
1137: max_req = 0;
1138: }
1139:
1.21 djm 1140: /* Send some more requests */
1141: while (num_req < max_req) {
1.28 markus 1142: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1143: (unsigned long long)offset,
1144: (unsigned long long)offset + buflen - 1,
1145: num_req, max_req);
1.108 djm 1146: req = xcalloc(1, sizeof(*req));
1.23 djm 1147: req->id = conn->msg_id++;
1.21 djm 1148: req->len = buflen;
1149: req->offset = offset;
1150: offset += buflen;
1151: num_req++;
1152: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1153: send_read_request(conn, req->id, req->offset,
1.21 djm 1154: req->len, handle, handle_len);
1155: }
1.1 djm 1156:
1157: buffer_clear(&msg);
1.93 djm 1158: get_msg(conn, &msg);
1.1 djm 1159: type = buffer_get_char(&msg);
1160: id = buffer_get_int(&msg);
1.33 deraadt 1161: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1162:
1163: /* Find the request in our queue */
1.53 deraadt 1164: for (req = TAILQ_FIRST(&requests);
1.21 djm 1165: req != NULL && req->id != id;
1166: req = TAILQ_NEXT(req, tq))
1167: ;
1168: if (req == NULL)
1169: fatal("Unexpected reply %u", id);
1170:
1171: switch (type) {
1172: case SSH2_FXP_STATUS:
1.5 djm 1173: status = buffer_get_int(&msg);
1.21 djm 1174: if (status != SSH2_FX_EOF)
1175: read_error = 1;
1176: max_req = 0;
1177: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1178: free(req);
1.21 djm 1179: num_req--;
1180: break;
1181: case SSH2_FXP_DATA:
1182: data = buffer_get_string(&msg, &len);
1.26 itojun 1183: debug3("Received data %llu -> %llu",
1.28 markus 1184: (unsigned long long)req->offset,
1.26 itojun 1185: (unsigned long long)req->offset + len - 1);
1.21 djm 1186: if (len > req->len)
1187: fatal("Received more data than asked for "
1.37 deraadt 1188: "%u > %u", len, req->len);
1.21 djm 1189: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1190: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1191: !write_error) {
1192: write_errno = errno;
1193: write_error = 1;
1194: max_req = 0;
1195: }
1.101 djm 1196: else if (!reordered && req->offset <= highwater)
1197: highwater = req->offset + len;
1198: else if (!reordered && req->offset > highwater)
1199: reordered = 1;
1.39 fgsch 1200: progress_counter += len;
1.98 djm 1201: free(data);
1.1 djm 1202:
1.21 djm 1203: if (len == req->len) {
1204: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1205: free(req);
1.21 djm 1206: num_req--;
1207: } else {
1208: /* Resend the request for the missing data */
1209: debug3("Short data block, re-requesting "
1.26 itojun 1210: "%llu -> %llu (%2d)",
1.28 markus 1211: (unsigned long long)req->offset + len,
1.27 itojun 1212: (unsigned long long)req->offset +
1213: req->len - 1, num_req);
1.23 djm 1214: req->id = conn->msg_id++;
1.21 djm 1215: req->len -= len;
1216: req->offset += len;
1.93 djm 1217: send_read_request(conn, req->id,
1.23 djm 1218: req->offset, req->len, handle, handle_len);
1.21 djm 1219: /* Reduce the request size */
1220: if (len < buflen)
1221: buflen = MAX(MIN_READ_SIZE, len);
1222: }
1223: if (max_req > 0) { /* max_req = 0 iff EOF received */
1224: if (size > 0 && offset > size) {
1225: /* Only one request at a time
1226: * after the expected EOF */
1227: debug3("Finish at %llu (%2d)",
1.26 itojun 1228: (unsigned long long)offset,
1229: num_req);
1.21 djm 1230: max_req = 1;
1.49 djm 1231: } else if (max_req <= conn->num_requests) {
1.21 djm 1232: ++max_req;
1233: }
1.1 djm 1234: }
1.21 djm 1235: break;
1236: default:
1.33 deraadt 1237: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1238: SSH2_FXP_DATA, type);
1239: }
1.21 djm 1240: }
1.1 djm 1241:
1.39 fgsch 1242: if (showprogress && size)
1243: stop_progress_meter();
1244:
1.21 djm 1245: /* Sanity check */
1246: if (TAILQ_FIRST(&requests) != NULL)
1247: fatal("Transfer complete, but requests still in queue");
1.101 djm 1248: /* Truncate at highest contiguous point to avoid holes on interrupt */
1249: if (read_error || write_error || interrupted) {
1.105 djm 1250: if (reordered && resume_flag) {
1.101 djm 1251: error("Unable to resume download of \"%s\": "
1252: "server reordered requests", local_path);
1253: }
1254: debug("truncating at %llu", (unsigned long long)highwater);
1255: ftruncate(local_fd, highwater);
1256: }
1.21 djm 1257: if (read_error) {
1.28 markus 1258: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1259: remote_path, fx2txt(status));
1.103 djm 1260: status = -1;
1.23 djm 1261: do_close(conn, handle, handle_len);
1.21 djm 1262: } else if (write_error) {
1263: error("Couldn't write to \"%s\": %s", local_path,
1264: strerror(write_errno));
1265: status = -1;
1.23 djm 1266: do_close(conn, handle, handle_len);
1.21 djm 1267: } else {
1.23 djm 1268: status = do_close(conn, handle, handle_len);
1.103 djm 1269: if (interrupted || status != SSH2_FX_OK)
1.101 djm 1270: status = -1;
1.21 djm 1271: /* Override umask and utimes if asked */
1.105 djm 1272: if (preserve_flag && fchmod(local_fd, mode) == -1)
1.21 djm 1273: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1274: strerror(errno));
1.105 djm 1275: if (preserve_flag &&
1276: (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1.21 djm 1277: struct timeval tv[2];
1278: tv[0].tv_sec = a->atime;
1279: tv[1].tv_sec = a->mtime;
1280: tv[0].tv_usec = tv[1].tv_usec = 0;
1281: if (utimes(local_path, tv) == -1)
1282: error("Can't set times on \"%s\": %s",
1.37 deraadt 1283: local_path, strerror(errno));
1.1 djm 1284: }
1.107 djm 1285: if (fsync_flag) {
1286: debug("syncing \"%s\"", local_path);
1287: if (fsync(local_fd) == -1)
1288: error("Couldn't sync file \"%s\": %s",
1289: local_path, strerror(errno));
1290: }
1.10 djm 1291: }
1.5 djm 1292: close(local_fd);
1293: buffer_free(&msg);
1.98 djm 1294: free(handle);
1.23 djm 1295:
1296: return(status);
1.1 djm 1297: }
1298:
1.89 djm 1299: static int
1.105 djm 1300: download_dir_internal(struct sftp_conn *conn, char *src, char *dst, int depth,
1.107 djm 1301: Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
1302: int fsync_flag)
1.89 djm 1303: {
1304: int i, ret = 0;
1305: SFTP_DIRENT **dir_entries;
1306: char *filename, *new_src, *new_dst;
1307: mode_t mode = 0777;
1308:
1309: if (depth >= MAX_DIR_DEPTH) {
1310: error("Maximum directory depth exceeded: %d levels", depth);
1311: return -1;
1312: }
1313:
1314: if (dirattrib == NULL &&
1315: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1316: error("Unable to stat remote directory \"%s\"", src);
1317: return -1;
1318: }
1319: if (!S_ISDIR(dirattrib->perm)) {
1320: error("\"%s\" is not a directory", src);
1321: return -1;
1322: }
1.105 djm 1323: if (print_flag)
1.89 djm 1324: printf("Retrieving %s\n", src);
1325:
1326: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1327: mode = dirattrib->perm & 01777;
1328: else {
1329: debug("Server did not send permissions for "
1330: "directory \"%s\"", dst);
1331: }
1332:
1333: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1334: error("mkdir %s: %s", dst, strerror(errno));
1335: return -1;
1336: }
1337:
1338: if (do_readdir(conn, src, &dir_entries) == -1) {
1339: error("%s: Failed to get directory contents", src);
1340: return -1;
1341: }
1342:
1343: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1344: filename = dir_entries[i]->filename;
1345:
1346: new_dst = path_append(dst, filename);
1347: new_src = path_append(src, filename);
1348:
1349: if (S_ISDIR(dir_entries[i]->a.perm)) {
1350: if (strcmp(filename, ".") == 0 ||
1351: strcmp(filename, "..") == 0)
1352: continue;
1353: if (download_dir_internal(conn, new_src, new_dst,
1.105 djm 1354: depth + 1, &(dir_entries[i]->a), preserve_flag,
1.107 djm 1355: print_flag, resume_flag, fsync_flag) == -1)
1.89 djm 1356: ret = -1;
1357: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1358: if (do_download(conn, new_src, new_dst,
1.107 djm 1359: &(dir_entries[i]->a), preserve_flag,
1360: resume_flag, fsync_flag) == -1) {
1.89 djm 1361: error("Download of file %s to %s failed",
1362: new_src, new_dst);
1363: ret = -1;
1364: }
1365: } else
1366: logit("%s: not a regular file\n", new_src);
1367:
1.98 djm 1368: free(new_dst);
1369: free(new_src);
1.89 djm 1370: }
1371:
1.105 djm 1372: if (preserve_flag) {
1.89 djm 1373: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1374: struct timeval tv[2];
1375: tv[0].tv_sec = dirattrib->atime;
1376: tv[1].tv_sec = dirattrib->mtime;
1377: tv[0].tv_usec = tv[1].tv_usec = 0;
1378: if (utimes(dst, tv) == -1)
1379: error("Can't set times on \"%s\": %s",
1380: dst, strerror(errno));
1381: } else
1382: debug("Server did not send times for directory "
1383: "\"%s\"", dst);
1384: }
1385:
1386: free_sftp_dirents(dir_entries);
1387:
1388: return ret;
1389: }
1390:
1391: int
1392: download_dir(struct sftp_conn *conn, char *src, char *dst,
1.107 djm 1393: Attrib *dirattrib, int preserve_flag, int print_flag,
1394: int resume_flag, int fsync_flag)
1.89 djm 1395: {
1396: char *src_canon;
1397: int ret;
1398:
1399: if ((src_canon = do_realpath(conn, src)) == NULL) {
1.107 djm 1400: error("Unable to canonicalize path \"%s\"", src);
1.89 djm 1401: return -1;
1402: }
1403:
1.105 djm 1404: ret = download_dir_internal(conn, src_canon, dst, 0,
1.107 djm 1405: dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag);
1.98 djm 1406: free(src_canon);
1.89 djm 1407: return ret;
1408: }
1409:
1.1 djm 1410: int
1.23 djm 1411: do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
1.115 ! logan 1412: int preserve_flag, int resume, int fsync_flag)
1.1 djm 1413: {
1.80 djm 1414: int local_fd;
1415: int status = SSH2_FX_OK;
1.22 djm 1416: u_int handle_len, id, type;
1.100 dtucker 1417: off_t offset, progress_counter;
1.20 djm 1418: char *handle, *data;
1.1 djm 1419: Buffer msg;
1420: struct stat sb;
1.115 ! logan 1421: Attrib a, *c = NULL;
1.21 djm 1422: u_int32_t startid;
1423: u_int32_t ackid;
1.22 djm 1424: struct outstanding_ack {
1425: u_int id;
1426: u_int len;
1.77 djm 1427: off_t offset;
1.28 markus 1428: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1429: };
1430: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1431: struct outstanding_ack *ack = NULL;
1.22 djm 1432:
1433: TAILQ_INIT(&acks);
1.1 djm 1434:
1435: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1436: error("Couldn't open local file \"%s\" for reading: %s",
1437: local_path, strerror(errno));
1438: return(-1);
1439: }
1440: if (fstat(local_fd, &sb) == -1) {
1441: error("Couldn't fstat local file \"%s\": %s",
1442: local_path, strerror(errno));
1.41 djm 1443: close(local_fd);
1444: return(-1);
1445: }
1446: if (!S_ISREG(sb.st_mode)) {
1447: error("%s is not a regular file", local_path);
1.1 djm 1448: close(local_fd);
1449: return(-1);
1450: }
1451: stat_to_attrib(&sb, &a);
1452:
1453: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1454: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1455: a.perm &= 0777;
1.105 djm 1456: if (!preserve_flag)
1.1 djm 1457: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1458:
1.115 ! logan 1459: if (resume) {
! 1460: /* Get remote file size if it exists */
! 1461: if ((c = do_stat(conn, remote_path, 0)) == NULL) {
! 1462: close(local_fd);
! 1463: return -1;
! 1464: }
! 1465:
! 1466: if ((off_t)c->size >= sb.st_size) {
! 1467: error("destination file bigger or same size as "
! 1468: "source file");
! 1469: close(local_fd);
! 1470: return -1;
! 1471: }
! 1472:
! 1473: if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
! 1474: close(local_fd);
! 1475: return -1;
! 1476: }
! 1477: }
! 1478:
1.1 djm 1479: buffer_init(&msg);
1480:
1481: /* Send open request */
1.23 djm 1482: id = conn->msg_id++;
1.1 djm 1483: buffer_put_char(&msg, SSH2_FXP_OPEN);
1484: buffer_put_int(&msg, id);
1485: buffer_put_cstring(&msg, remote_path);
1.115 ! logan 1486: buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|
! 1487: (resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC));
1.1 djm 1488: encode_attrib(&msg, &a);
1.93 djm 1489: send_msg(conn, &msg);
1.33 deraadt 1490: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1491:
1492: buffer_clear(&msg);
1493:
1.93 djm 1494: handle = get_handle(conn, id, &handle_len,
1.88 djm 1495: "remote open(\"%s\")", remote_path);
1.1 djm 1496: if (handle == NULL) {
1497: close(local_fd);
1498: buffer_free(&msg);
1.80 djm 1499: return -1;
1.1 djm 1500: }
1501:
1.21 djm 1502: startid = ackid = id + 1;
1.23 djm 1503: data = xmalloc(conn->transfer_buflen);
1.20 djm 1504:
1.1 djm 1505: /* Read from local and write to remote */
1.115 ! logan 1506: offset = progress_counter = (resume ? c->size : 0);
1.39 fgsch 1507: if (showprogress)
1.100 dtucker 1508: start_progress_meter(local_path, sb.st_size,
1509: &progress_counter);
1.39 fgsch 1510:
1.19 deraadt 1511: for (;;) {
1.1 djm 1512: int len;
1513:
1514: /*
1.51 deraadt 1515: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1516: * thus losing the last block of the file.
1.51 deraadt 1517: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1518: * server to drain.
1.1 djm 1519: */
1.80 djm 1520: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1521: len = 0;
1522: else do
1.23 djm 1523: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1524: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1525:
1526: if (len == -1)
1527: fatal("Couldn't read from \"%s\": %s", local_path,
1528: strerror(errno));
1.21 djm 1529:
1530: if (len != 0) {
1.108 djm 1531: ack = xcalloc(1, sizeof(*ack));
1.22 djm 1532: ack->id = ++id;
1533: ack->offset = offset;
1534: ack->len = len;
1535: TAILQ_INSERT_TAIL(&acks, ack, tq);
1536:
1.21 djm 1537: buffer_clear(&msg);
1538: buffer_put_char(&msg, SSH2_FXP_WRITE);
1.22 djm 1539: buffer_put_int(&msg, ack->id);
1.21 djm 1540: buffer_put_string(&msg, handle, handle_len);
1541: buffer_put_int64(&msg, offset);
1542: buffer_put_string(&msg, data, len);
1.93 djm 1543: send_msg(conn, &msg);
1.33 deraadt 1544: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1545: id, (unsigned long long)offset, len);
1.22 djm 1546: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1547: break;
1548:
1.22 djm 1549: if (ack == NULL)
1550: fatal("Unexpected ACK %u", id);
1551:
1.28 markus 1552: if (id == startid || len == 0 ||
1.23 djm 1553: id - ackid >= conn->num_requests) {
1.32 markus 1554: u_int r_id;
1.31 djm 1555:
1.22 djm 1556: buffer_clear(&msg);
1.93 djm 1557: get_msg(conn, &msg);
1.22 djm 1558: type = buffer_get_char(&msg);
1.31 djm 1559: r_id = buffer_get_int(&msg);
1.22 djm 1560:
1561: if (type != SSH2_FXP_STATUS)
1562: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1563: "got %d", SSH2_FXP_STATUS, type);
1564:
1565: status = buffer_get_int(&msg);
1566: debug3("SSH2_FXP_STATUS %d", status);
1567:
1568: /* Find the request in our queue */
1.53 deraadt 1569: for (ack = TAILQ_FIRST(&acks);
1.31 djm 1570: ack != NULL && ack->id != r_id;
1.22 djm 1571: ack = TAILQ_NEXT(ack, tq))
1572: ;
1573: if (ack == NULL)
1.33 deraadt 1574: fatal("Can't find request for ID %u", r_id);
1.22 djm 1575: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1576: debug3("In write loop, ack for %u %u bytes at %lld",
1577: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1578: ++ackid;
1.100 dtucker 1579: progress_counter += ack->len;
1.98 djm 1580: free(ack);
1.1 djm 1581: }
1582: offset += len;
1.77 djm 1583: if (offset < 0)
1584: fatal("%s: offset < 0", __func__);
1.1 djm 1585: }
1.80 djm 1586: buffer_free(&msg);
1587:
1.39 fgsch 1588: if (showprogress)
1589: stop_progress_meter();
1.98 djm 1590: free(data);
1.1 djm 1591:
1.80 djm 1592: if (status != SSH2_FX_OK) {
1593: error("Couldn't write to remote file \"%s\": %s",
1594: remote_path, fx2txt(status));
1595: status = -1;
1596: }
1597:
1.1 djm 1598: if (close(local_fd) == -1) {
1599: error("Couldn't close local file \"%s\": %s", local_path,
1600: strerror(errno));
1.5 djm 1601: status = -1;
1.1 djm 1602: }
1603:
1.10 djm 1604: /* Override umask and utimes if asked */
1.105 djm 1605: if (preserve_flag)
1.23 djm 1606: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1607:
1.107 djm 1608: if (fsync_flag)
1609: (void)do_fsync(conn, handle, handle_len);
1610:
1.80 djm 1611: if (do_close(conn, handle, handle_len) != SSH2_FX_OK)
1612: status = -1;
1.98 djm 1613: free(handle);
1.5 djm 1614:
1.80 djm 1615: return status;
1.1 djm 1616: }
1.89 djm 1617:
1618: static int
1.105 djm 1619: upload_dir_internal(struct sftp_conn *conn, char *src, char *dst, int depth,
1.115 ! logan 1620: int preserve_flag, int print_flag, int resume, int fsync_flag)
1.89 djm 1621: {
1622: int ret = 0, status;
1623: DIR *dirp;
1624: struct dirent *dp;
1625: char *filename, *new_src, *new_dst;
1626: struct stat sb;
1627: Attrib a;
1628:
1629: if (depth >= MAX_DIR_DEPTH) {
1630: error("Maximum directory depth exceeded: %d levels", depth);
1631: return -1;
1632: }
1633:
1634: if (stat(src, &sb) == -1) {
1635: error("Couldn't stat directory \"%s\": %s",
1636: src, strerror(errno));
1637: return -1;
1638: }
1639: if (!S_ISDIR(sb.st_mode)) {
1640: error("\"%s\" is not a directory", src);
1641: return -1;
1642: }
1.105 djm 1643: if (print_flag)
1.89 djm 1644: printf("Entering %s\n", src);
1645:
1646: attrib_clear(&a);
1647: stat_to_attrib(&sb, &a);
1648: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1649: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1650: a.perm &= 01777;
1.105 djm 1651: if (!preserve_flag)
1.89 djm 1652: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 1653:
1.89 djm 1654: status = do_mkdir(conn, dst, &a, 0);
1655: /*
1656: * we lack a portable status for errno EEXIST,
1657: * so if we get a SSH2_FX_FAILURE back we must check
1658: * if it was created successfully.
1659: */
1660: if (status != SSH2_FX_OK) {
1661: if (status != SSH2_FX_FAILURE)
1662: return -1;
1.101 djm 1663: if (do_stat(conn, dst, 0) == NULL)
1.89 djm 1664: return -1;
1665: }
1666:
1667: if ((dirp = opendir(src)) == NULL) {
1668: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1669: return -1;
1670: }
1.101 djm 1671:
1.89 djm 1672: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1673: if (dp->d_ino == 0)
1674: continue;
1675: filename = dp->d_name;
1676: new_dst = path_append(dst, filename);
1677: new_src = path_append(src, filename);
1678:
1.90 dtucker 1679: if (lstat(new_src, &sb) == -1) {
1680: logit("%s: lstat failed: %s", filename,
1681: strerror(errno));
1682: ret = -1;
1683: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1684: if (strcmp(filename, ".") == 0 ||
1685: strcmp(filename, "..") == 0)
1686: continue;
1687:
1688: if (upload_dir_internal(conn, new_src, new_dst,
1.115 ! logan 1689: depth + 1, preserve_flag, print_flag, resume,
1.107 djm 1690: fsync_flag) == -1)
1.89 djm 1691: ret = -1;
1.90 dtucker 1692: } else if (S_ISREG(sb.st_mode)) {
1.105 djm 1693: if (do_upload(conn, new_src, new_dst,
1.115 ! logan 1694: preserve_flag, resume, fsync_flag) == -1) {
1.89 djm 1695: error("Uploading of file %s to %s failed!",
1696: new_src, new_dst);
1697: ret = -1;
1698: }
1699: } else
1700: logit("%s: not a regular file\n", filename);
1.98 djm 1701: free(new_dst);
1702: free(new_src);
1.89 djm 1703: }
1704:
1705: do_setstat(conn, dst, &a);
1706:
1707: (void) closedir(dirp);
1708: return ret;
1709: }
1710:
1711: int
1.105 djm 1712: upload_dir(struct sftp_conn *conn, char *src, char *dst, int preserve_flag,
1.115 ! logan 1713: int print_flag, int resume, int fsync_flag)
1.89 djm 1714: {
1715: char *dst_canon;
1716: int ret;
1717:
1718: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1.107 djm 1719: error("Unable to canonicalize path \"%s\"", dst);
1.89 djm 1720: return -1;
1721: }
1722:
1.106 djm 1723: ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
1.115 ! logan 1724: print_flag, resume, fsync_flag);
1.107 djm 1725:
1.98 djm 1726: free(dst_canon);
1.89 djm 1727: return ret;
1728: }
1729:
1730: char *
1731: path_append(char *p1, char *p2)
1732: {
1733: char *ret;
1734: size_t len = strlen(p1) + strlen(p2) + 2;
1735:
1736: ret = xmalloc(len);
1737: strlcpy(ret, p1, len);
1738: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1739: strlcat(ret, "/", len);
1740: strlcat(ret, p2, len);
1741:
1742: return(ret);
1743: }
1744:
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