Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2001 Damien Miller. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * |
| 13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 23 | */ |
| 24 | |
| 25 | /* XXX: memleaks */ |
| 26 | /* XXX: signed vs unsigned */ |
| 27 | /* XXX: redesign to allow concurrent overlapped operations */ |
| 28 | /* XXX: we use fatal too much, error may be more appropriate in places */ |
| 29 | /* XXX: copy between two remote sites */ |
| 30 | |
| 31 | #include "includes.h" |
Damien Miller | 058316f | 2001-03-08 10:08:49 +1100 | [diff] [blame] | 32 | RCSID("$OpenBSD: sftp-client.c,v 1.11 2001/03/07 10:11:22 djm Exp $"); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 33 | |
| 34 | #include "ssh.h" |
| 35 | #include "buffer.h" |
| 36 | #include "bufaux.h" |
| 37 | #include "getput.h" |
| 38 | #include "xmalloc.h" |
| 39 | #include "log.h" |
| 40 | #include "atomicio.h" |
| 41 | #include "pathnames.h" |
| 42 | |
| 43 | #include "sftp.h" |
| 44 | #include "sftp-common.h" |
| 45 | #include "sftp-client.h" |
| 46 | |
| 47 | /* How much data to read/write at at time during copies */ |
| 48 | /* XXX: what should this be? */ |
| 49 | #define COPY_SIZE 8192 |
| 50 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 51 | /* Message ID */ |
| 52 | static u_int msg_id = 1; |
| 53 | |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 54 | void |
| 55 | send_msg(int fd, Buffer *m) |
| 56 | { |
| 57 | int mlen = buffer_len(m); |
| 58 | int len; |
| 59 | Buffer oqueue; |
| 60 | |
| 61 | buffer_init(&oqueue); |
| 62 | buffer_put_int(&oqueue, mlen); |
| 63 | buffer_append(&oqueue, buffer_ptr(m), mlen); |
| 64 | buffer_consume(m, mlen); |
| 65 | |
| 66 | len = atomicio(write, fd, buffer_ptr(&oqueue), buffer_len(&oqueue)); |
| 67 | if (len <= 0) |
| 68 | fatal("Couldn't send packet: %s", strerror(errno)); |
| 69 | |
| 70 | buffer_free(&oqueue); |
| 71 | } |
| 72 | |
| 73 | void |
| 74 | get_msg(int fd, Buffer *m) |
| 75 | { |
| 76 | u_int len, msg_len; |
| 77 | unsigned char buf[4096]; |
| 78 | |
| 79 | len = atomicio(read, fd, buf, 4); |
| 80 | if (len != 4) |
| 81 | fatal("Couldn't read packet: %s", strerror(errno)); |
| 82 | |
| 83 | msg_len = GET_32BIT(buf); |
| 84 | if (msg_len > 256 * 1024) |
| 85 | fatal("Received message too long %d", msg_len); |
| 86 | |
| 87 | while (msg_len) { |
| 88 | len = atomicio(read, fd, buf, MIN(msg_len, sizeof(buf))); |
| 89 | if (len <= 0) |
| 90 | fatal("Couldn't read packet: %s", strerror(errno)); |
| 91 | |
| 92 | msg_len -= len; |
| 93 | buffer_append(m, buf, len); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | void |
| 98 | send_string_request(int fd, u_int id, u_int code, char *s, |
| 99 | u_int len) |
| 100 | { |
| 101 | Buffer msg; |
| 102 | |
| 103 | buffer_init(&msg); |
| 104 | buffer_put_char(&msg, code); |
| 105 | buffer_put_int(&msg, id); |
| 106 | buffer_put_string(&msg, s, len); |
| 107 | send_msg(fd, &msg); |
| 108 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); |
| 109 | buffer_free(&msg); |
| 110 | } |
| 111 | |
| 112 | void |
| 113 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, |
| 114 | u_int len, Attrib *a) |
| 115 | { |
| 116 | Buffer msg; |
| 117 | |
| 118 | buffer_init(&msg); |
| 119 | buffer_put_char(&msg, code); |
| 120 | buffer_put_int(&msg, id); |
| 121 | buffer_put_string(&msg, s, len); |
| 122 | encode_attrib(&msg, a); |
| 123 | send_msg(fd, &msg); |
| 124 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); |
| 125 | buffer_free(&msg); |
| 126 | } |
| 127 | |
| 128 | u_int |
| 129 | get_status(int fd, int expected_id) |
| 130 | { |
| 131 | Buffer msg; |
| 132 | u_int type, id, status; |
| 133 | |
| 134 | buffer_init(&msg); |
| 135 | get_msg(fd, &msg); |
| 136 | type = buffer_get_char(&msg); |
| 137 | id = buffer_get_int(&msg); |
| 138 | |
| 139 | if (id != expected_id) |
| 140 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 141 | if (type != SSH2_FXP_STATUS) |
| 142 | fatal("Expected SSH2_FXP_STATUS(%d) packet, got %d", |
| 143 | SSH2_FXP_STATUS, type); |
| 144 | |
| 145 | status = buffer_get_int(&msg); |
| 146 | buffer_free(&msg); |
| 147 | |
| 148 | debug3("SSH2_FXP_STATUS %d", status); |
| 149 | |
| 150 | return(status); |
| 151 | } |
| 152 | |
| 153 | char * |
| 154 | get_handle(int fd, u_int expected_id, u_int *len) |
| 155 | { |
| 156 | Buffer msg; |
| 157 | u_int type, id; |
| 158 | char *handle; |
| 159 | |
| 160 | buffer_init(&msg); |
| 161 | get_msg(fd, &msg); |
| 162 | type = buffer_get_char(&msg); |
| 163 | id = buffer_get_int(&msg); |
| 164 | |
| 165 | if (id != expected_id) |
| 166 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 167 | if (type == SSH2_FXP_STATUS) { |
| 168 | int status = buffer_get_int(&msg); |
| 169 | |
| 170 | error("Couldn't get handle: %s", fx2txt(status)); |
| 171 | return(NULL); |
| 172 | } else if (type != SSH2_FXP_HANDLE) |
| 173 | fatal("Expected SSH2_FXP_HANDLE(%d) packet, got %d", |
| 174 | SSH2_FXP_HANDLE, type); |
| 175 | |
| 176 | handle = buffer_get_string(&msg, len); |
| 177 | buffer_free(&msg); |
| 178 | |
| 179 | return(handle); |
| 180 | } |
| 181 | |
| 182 | Attrib * |
| 183 | get_decode_stat(int fd, u_int expected_id) |
| 184 | { |
| 185 | Buffer msg; |
| 186 | u_int type, id; |
| 187 | Attrib *a; |
| 188 | |
| 189 | buffer_init(&msg); |
| 190 | get_msg(fd, &msg); |
| 191 | |
| 192 | type = buffer_get_char(&msg); |
| 193 | id = buffer_get_int(&msg); |
| 194 | |
| 195 | debug3("Received stat reply T:%d I:%d", type, id); |
| 196 | if (id != expected_id) |
| 197 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 198 | if (type == SSH2_FXP_STATUS) { |
| 199 | int status = buffer_get_int(&msg); |
| 200 | |
| 201 | error("Couldn't stat remote file: %s", fx2txt(status)); |
| 202 | return(NULL); |
| 203 | } else if (type != SSH2_FXP_ATTRS) { |
| 204 | fatal("Expected SSH2_FXP_ATTRS(%d) packet, got %d", |
| 205 | SSH2_FXP_ATTRS, type); |
| 206 | } |
| 207 | a = decode_attrib(&msg); |
| 208 | buffer_free(&msg); |
| 209 | |
| 210 | return(a); |
| 211 | } |
| 212 | |
| 213 | int |
| 214 | do_init(int fd_in, int fd_out) |
| 215 | { |
| 216 | int type, version; |
| 217 | Buffer msg; |
| 218 | |
| 219 | buffer_init(&msg); |
| 220 | buffer_put_char(&msg, SSH2_FXP_INIT); |
| 221 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); |
| 222 | send_msg(fd_out, &msg); |
| 223 | |
| 224 | buffer_clear(&msg); |
| 225 | |
| 226 | get_msg(fd_in, &msg); |
| 227 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 228 | /* Expecting a VERSION reply */ |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 229 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { |
| 230 | error("Invalid packet back from SSH2_FXP_INIT (type %d)", |
| 231 | type); |
| 232 | buffer_free(&msg); |
| 233 | return(-1); |
| 234 | } |
| 235 | version = buffer_get_int(&msg); |
| 236 | |
| 237 | debug2("Remote version: %d", version); |
| 238 | |
| 239 | /* Check for extensions */ |
| 240 | while (buffer_len(&msg) > 0) { |
| 241 | char *name = buffer_get_string(&msg, NULL); |
| 242 | char *value = buffer_get_string(&msg, NULL); |
| 243 | |
| 244 | debug2("Init extension: \"%s\"", name); |
| 245 | xfree(name); |
| 246 | xfree(value); |
| 247 | } |
| 248 | |
| 249 | buffer_free(&msg); |
Damien Miller | 058316f | 2001-03-08 10:08:49 +1100 | [diff] [blame] | 250 | |
| 251 | return(version); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | int |
| 255 | do_close(int fd_in, int fd_out, char *handle, u_int handle_len) |
| 256 | { |
| 257 | u_int id, status; |
| 258 | Buffer msg; |
| 259 | |
| 260 | buffer_init(&msg); |
| 261 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 262 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 263 | buffer_put_char(&msg, SSH2_FXP_CLOSE); |
| 264 | buffer_put_int(&msg, id); |
| 265 | buffer_put_string(&msg, handle, handle_len); |
| 266 | send_msg(fd_out, &msg); |
| 267 | debug3("Sent message SSH2_FXP_CLOSE I:%d", id); |
| 268 | |
| 269 | status = get_status(fd_in, id); |
| 270 | if (status != SSH2_FX_OK) |
| 271 | error("Couldn't close file: %s", fx2txt(status)); |
| 272 | |
| 273 | buffer_free(&msg); |
| 274 | |
| 275 | return(status); |
| 276 | } |
| 277 | |
| 278 | int |
| 279 | do_ls(int fd_in, int fd_out, char *path) |
| 280 | { |
| 281 | Buffer msg; |
| 282 | u_int type, id, handle_len, i, expected_id; |
| 283 | char *handle; |
| 284 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 285 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 286 | |
| 287 | buffer_init(&msg); |
| 288 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); |
| 289 | buffer_put_int(&msg, id); |
| 290 | buffer_put_cstring(&msg, path); |
| 291 | send_msg(fd_out, &msg); |
| 292 | |
| 293 | buffer_clear(&msg); |
| 294 | |
| 295 | handle = get_handle(fd_in, id, &handle_len); |
| 296 | if (handle == NULL) |
| 297 | return(-1); |
| 298 | |
| 299 | for(;;) { |
| 300 | int count; |
| 301 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 302 | id = expected_id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 303 | |
| 304 | debug3("Sending SSH2_FXP_READDIR I:%d", id); |
| 305 | |
| 306 | buffer_clear(&msg); |
| 307 | buffer_put_char(&msg, SSH2_FXP_READDIR); |
| 308 | buffer_put_int(&msg, id); |
| 309 | buffer_put_string(&msg, handle, handle_len); |
| 310 | send_msg(fd_out, &msg); |
| 311 | |
| 312 | buffer_clear(&msg); |
| 313 | |
| 314 | get_msg(fd_in, &msg); |
| 315 | |
| 316 | type = buffer_get_char(&msg); |
| 317 | id = buffer_get_int(&msg); |
| 318 | |
| 319 | debug3("Received reply T:%d I:%d", type, id); |
| 320 | |
| 321 | if (id != expected_id) |
| 322 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 323 | |
| 324 | if (type == SSH2_FXP_STATUS) { |
| 325 | int status = buffer_get_int(&msg); |
| 326 | |
| 327 | debug3("Received SSH2_FXP_STATUS %d", status); |
| 328 | |
| 329 | if (status == SSH2_FX_EOF) { |
| 330 | break; |
| 331 | } else { |
| 332 | error("Couldn't read directory: %s", |
| 333 | fx2txt(status)); |
| 334 | do_close(fd_in, fd_out, handle, handle_len); |
Ben Lindstrom | 10ac33f | 2001-02-10 21:53:40 +0000 | [diff] [blame] | 335 | return(status); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 336 | } |
| 337 | } else if (type != SSH2_FXP_NAME) |
| 338 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", |
| 339 | SSH2_FXP_NAME, type); |
| 340 | |
| 341 | count = buffer_get_int(&msg); |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 342 | if (count == 0) |
| 343 | break; |
| 344 | debug3("Received %d SSH2_FXP_NAME responses", count); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 345 | for(i = 0; i < count; i++) { |
| 346 | char *filename, *longname; |
| 347 | Attrib *a; |
| 348 | |
| 349 | filename = buffer_get_string(&msg, NULL); |
| 350 | longname = buffer_get_string(&msg, NULL); |
| 351 | a = decode_attrib(&msg); |
| 352 | |
| 353 | printf("%s\n", longname); |
| 354 | |
| 355 | xfree(filename); |
| 356 | xfree(longname); |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | buffer_free(&msg); |
| 361 | do_close(fd_in, fd_out, handle, handle_len); |
| 362 | xfree(handle); |
| 363 | |
| 364 | return(0); |
| 365 | } |
| 366 | |
| 367 | int |
| 368 | do_rm(int fd_in, int fd_out, char *path) |
| 369 | { |
| 370 | u_int status, id; |
| 371 | |
| 372 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); |
| 373 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 374 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 375 | send_string_request(fd_out, id, SSH2_FXP_REMOVE, path, strlen(path)); |
| 376 | status = get_status(fd_in, id); |
| 377 | if (status != SSH2_FX_OK) |
| 378 | error("Couldn't delete file: %s", fx2txt(status)); |
| 379 | return(status); |
| 380 | } |
| 381 | |
| 382 | int |
| 383 | do_mkdir(int fd_in, int fd_out, char *path, Attrib *a) |
| 384 | { |
| 385 | u_int status, id; |
| 386 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 387 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 388 | send_string_attrs_request(fd_out, id, SSH2_FXP_MKDIR, path, |
| 389 | strlen(path), a); |
| 390 | |
| 391 | status = get_status(fd_in, id); |
| 392 | if (status != SSH2_FX_OK) |
| 393 | error("Couldn't create directory: %s", fx2txt(status)); |
| 394 | |
| 395 | return(status); |
| 396 | } |
| 397 | |
| 398 | int |
| 399 | do_rmdir(int fd_in, int fd_out, char *path) |
| 400 | { |
| 401 | u_int status, id; |
| 402 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 403 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 404 | send_string_request(fd_out, id, SSH2_FXP_RMDIR, path, strlen(path)); |
| 405 | |
| 406 | status = get_status(fd_in, id); |
| 407 | if (status != SSH2_FX_OK) |
| 408 | error("Couldn't remove directory: %s", fx2txt(status)); |
| 409 | |
| 410 | return(status); |
| 411 | } |
| 412 | |
| 413 | Attrib * |
| 414 | do_stat(int fd_in, int fd_out, char *path) |
| 415 | { |
| 416 | u_int id; |
| 417 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 418 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 419 | send_string_request(fd_out, id, SSH2_FXP_STAT, path, strlen(path)); |
| 420 | return(get_decode_stat(fd_in, id)); |
| 421 | } |
| 422 | |
| 423 | Attrib * |
| 424 | do_lstat(int fd_in, int fd_out, char *path) |
| 425 | { |
| 426 | u_int id; |
| 427 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 428 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 429 | send_string_request(fd_out, id, SSH2_FXP_LSTAT, path, strlen(path)); |
| 430 | return(get_decode_stat(fd_in, id)); |
| 431 | } |
| 432 | |
| 433 | Attrib * |
| 434 | do_fstat(int fd_in, int fd_out, char *handle, |
| 435 | u_int handle_len) |
| 436 | { |
| 437 | u_int id; |
| 438 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 439 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 440 | send_string_request(fd_out, id, SSH2_FXP_FSTAT, handle, handle_len); |
| 441 | return(get_decode_stat(fd_in, id)); |
| 442 | } |
| 443 | |
| 444 | int |
| 445 | do_setstat(int fd_in, int fd_out, char *path, Attrib *a) |
| 446 | { |
| 447 | u_int status, id; |
| 448 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 449 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 450 | send_string_attrs_request(fd_out, id, SSH2_FXP_SETSTAT, path, |
| 451 | strlen(path), a); |
| 452 | |
| 453 | status = get_status(fd_in, id); |
| 454 | if (status != SSH2_FX_OK) |
| 455 | error("Couldn't setstat on \"%s\": %s", path, |
| 456 | fx2txt(status)); |
| 457 | |
| 458 | return(status); |
| 459 | } |
| 460 | |
| 461 | int |
| 462 | do_fsetstat(int fd_in, int fd_out, char *handle, u_int handle_len, |
| 463 | Attrib *a) |
| 464 | { |
| 465 | u_int status, id; |
| 466 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 467 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 468 | send_string_attrs_request(fd_out, id, SSH2_FXP_FSETSTAT, handle, |
| 469 | handle_len, a); |
| 470 | |
| 471 | status = get_status(fd_in, id); |
| 472 | if (status != SSH2_FX_OK) |
| 473 | error("Couldn't fsetstat: %s", fx2txt(status)); |
| 474 | |
| 475 | return(status); |
| 476 | } |
| 477 | |
| 478 | char * |
| 479 | do_realpath(int fd_in, int fd_out, char *path) |
| 480 | { |
| 481 | Buffer msg; |
| 482 | u_int type, expected_id, count, id; |
| 483 | char *filename, *longname; |
| 484 | Attrib *a; |
| 485 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 486 | expected_id = id = msg_id++; |
Damien Miller | 058316f | 2001-03-08 10:08:49 +1100 | [diff] [blame] | 487 | send_string_request(fd_out, id, SSH2_FXP_REALPATH, path, strlen(path)); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 488 | |
| 489 | buffer_init(&msg); |
| 490 | |
| 491 | get_msg(fd_in, &msg); |
| 492 | type = buffer_get_char(&msg); |
| 493 | id = buffer_get_int(&msg); |
| 494 | |
| 495 | if (id != expected_id) |
| 496 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 497 | |
| 498 | if (type == SSH2_FXP_STATUS) { |
| 499 | u_int status = buffer_get_int(&msg); |
| 500 | |
| 501 | error("Couldn't canonicalise: %s", fx2txt(status)); |
| 502 | return(NULL); |
| 503 | } else if (type != SSH2_FXP_NAME) |
| 504 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", |
| 505 | SSH2_FXP_NAME, type); |
| 506 | |
| 507 | count = buffer_get_int(&msg); |
| 508 | if (count != 1) |
| 509 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); |
| 510 | |
| 511 | filename = buffer_get_string(&msg, NULL); |
| 512 | longname = buffer_get_string(&msg, NULL); |
| 513 | a = decode_attrib(&msg); |
| 514 | |
| 515 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); |
| 516 | |
| 517 | xfree(longname); |
| 518 | |
| 519 | buffer_free(&msg); |
| 520 | |
| 521 | return(filename); |
| 522 | } |
| 523 | |
| 524 | int |
| 525 | do_rename(int fd_in, int fd_out, char *oldpath, char *newpath) |
| 526 | { |
| 527 | Buffer msg; |
| 528 | u_int status, id; |
| 529 | |
| 530 | buffer_init(&msg); |
| 531 | |
| 532 | /* Send rename request */ |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 533 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 534 | buffer_put_char(&msg, SSH2_FXP_RENAME); |
| 535 | buffer_put_int(&msg, id); |
| 536 | buffer_put_cstring(&msg, oldpath); |
| 537 | buffer_put_cstring(&msg, newpath); |
| 538 | send_msg(fd_out, &msg); |
| 539 | debug3("Sent message SSH2_FXP_RENAME \"%s\" -> \"%s\"", oldpath, |
| 540 | newpath); |
| 541 | buffer_free(&msg); |
| 542 | |
| 543 | status = get_status(fd_in, id); |
| 544 | if (status != SSH2_FX_OK) |
| 545 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, newpath, |
| 546 | fx2txt(status)); |
| 547 | |
| 548 | return(status); |
| 549 | } |
| 550 | |
| 551 | int |
Damien Miller | 058316f | 2001-03-08 10:08:49 +1100 | [diff] [blame] | 552 | do_symlink(int fd_in, int fd_out, char *oldpath, char *newpath) |
| 553 | { |
| 554 | Buffer msg; |
| 555 | u_int status, id; |
| 556 | |
| 557 | buffer_init(&msg); |
| 558 | |
| 559 | /* Send rename request */ |
| 560 | id = msg_id++; |
| 561 | buffer_put_char(&msg, SSH2_FXP_SYMLINK); |
| 562 | buffer_put_int(&msg, id); |
| 563 | buffer_put_cstring(&msg, oldpath); |
| 564 | buffer_put_cstring(&msg, newpath); |
| 565 | send_msg(fd_out, &msg); |
| 566 | debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, |
| 567 | newpath); |
| 568 | buffer_free(&msg); |
| 569 | |
| 570 | status = get_status(fd_in, id); |
| 571 | if (status != SSH2_FX_OK) |
| 572 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, newpath, |
| 573 | fx2txt(status)); |
| 574 | |
| 575 | return(status); |
| 576 | } |
| 577 | |
| 578 | char * |
| 579 | do_readlink(int fd_in, int fd_out, char *path) |
| 580 | { |
| 581 | Buffer msg; |
| 582 | u_int type, expected_id, count, id; |
| 583 | char *filename, *longname; |
| 584 | Attrib *a; |
| 585 | |
| 586 | expected_id = id = msg_id++; |
| 587 | send_string_request(fd_out, id, SSH2_FXP_READLINK, path, strlen(path)); |
| 588 | |
| 589 | buffer_init(&msg); |
| 590 | |
| 591 | get_msg(fd_in, &msg); |
| 592 | type = buffer_get_char(&msg); |
| 593 | id = buffer_get_int(&msg); |
| 594 | |
| 595 | if (id != expected_id) |
| 596 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 597 | |
| 598 | if (type == SSH2_FXP_STATUS) { |
| 599 | u_int status = buffer_get_int(&msg); |
| 600 | |
| 601 | error("Couldn't readlink: %s", fx2txt(status)); |
| 602 | return(NULL); |
| 603 | } else if (type != SSH2_FXP_NAME) |
| 604 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", |
| 605 | SSH2_FXP_NAME, type); |
| 606 | |
| 607 | count = buffer_get_int(&msg); |
| 608 | if (count != 1) |
| 609 | fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); |
| 610 | |
| 611 | filename = buffer_get_string(&msg, NULL); |
| 612 | longname = buffer_get_string(&msg, NULL); |
| 613 | a = decode_attrib(&msg); |
| 614 | |
| 615 | debug3("SSH_FXP_READLINK %s -> %s", path, filename); |
| 616 | |
| 617 | xfree(longname); |
| 618 | |
| 619 | buffer_free(&msg); |
| 620 | |
| 621 | return(filename); |
| 622 | } |
| 623 | |
| 624 | int |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 625 | do_download(int fd_in, int fd_out, char *remote_path, char *local_path, |
| 626 | int pflag) |
| 627 | { |
| 628 | int local_fd; |
| 629 | u_int expected_id, handle_len, mode, type, id; |
| 630 | u_int64_t offset; |
| 631 | char *handle; |
| 632 | Buffer msg; |
| 633 | Attrib junk, *a; |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 634 | int status; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 635 | |
| 636 | a = do_stat(fd_in, fd_out, remote_path); |
| 637 | if (a == NULL) |
| 638 | return(-1); |
| 639 | |
| 640 | /* XXX: should we preserve set[ug]id? */ |
| 641 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) |
| 642 | mode = S_IWRITE | (a->perm & 0777); |
| 643 | else |
| 644 | mode = 0666; |
| 645 | |
| 646 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, mode); |
| 647 | if (local_fd == -1) { |
| 648 | error("Couldn't open local file \"%s\" for writing: %s", |
| 649 | local_path, strerror(errno)); |
| 650 | return(errno); |
| 651 | } |
| 652 | |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 653 | buffer_init(&msg); |
| 654 | |
| 655 | /* Send open request */ |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 656 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 657 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
| 658 | buffer_put_int(&msg, id); |
| 659 | buffer_put_cstring(&msg, remote_path); |
| 660 | buffer_put_int(&msg, SSH2_FXF_READ); |
| 661 | attrib_clear(&junk); /* Send empty attributes */ |
| 662 | encode_attrib(&msg, &junk); |
| 663 | send_msg(fd_out, &msg); |
| 664 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); |
| 665 | |
| 666 | handle = get_handle(fd_in, id, &handle_len); |
| 667 | if (handle == NULL) { |
| 668 | buffer_free(&msg); |
| 669 | close(local_fd); |
| 670 | return(-1); |
| 671 | } |
| 672 | |
| 673 | /* Read from remote and write to local */ |
| 674 | offset = 0; |
| 675 | for(;;) { |
| 676 | u_int len; |
| 677 | char *data; |
| 678 | |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 679 | id = expected_id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 680 | |
| 681 | buffer_clear(&msg); |
| 682 | buffer_put_char(&msg, SSH2_FXP_READ); |
| 683 | buffer_put_int(&msg, id); |
| 684 | buffer_put_string(&msg, handle, handle_len); |
| 685 | buffer_put_int64(&msg, offset); |
| 686 | buffer_put_int(&msg, COPY_SIZE); |
| 687 | send_msg(fd_out, &msg); |
| 688 | debug3("Sent message SSH2_FXP_READ I:%d O:%llu S:%u", |
Ben Lindstrom | 416d874 | 2001-02-25 02:02:43 +0000 | [diff] [blame] | 689 | id, (u_int64_t)offset, COPY_SIZE); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 690 | |
| 691 | buffer_clear(&msg); |
| 692 | |
| 693 | get_msg(fd_in, &msg); |
| 694 | type = buffer_get_char(&msg); |
| 695 | id = buffer_get_int(&msg); |
| 696 | debug3("Received reply T:%d I:%d", type, id); |
| 697 | if (id != expected_id) |
| 698 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 699 | if (type == SSH2_FXP_STATUS) { |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 700 | status = buffer_get_int(&msg); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 701 | |
| 702 | if (status == SSH2_FX_EOF) |
| 703 | break; |
| 704 | else { |
| 705 | error("Couldn't read from remote " |
| 706 | "file \"%s\" : %s", remote_path, |
| 707 | fx2txt(status)); |
| 708 | do_close(fd_in, fd_out, handle, handle_len); |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 709 | goto done; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 710 | } |
| 711 | } else if (type != SSH2_FXP_DATA) { |
| 712 | fatal("Expected SSH2_FXP_DATA(%d) packet, got %d", |
| 713 | SSH2_FXP_DATA, type); |
| 714 | } |
| 715 | |
| 716 | data = buffer_get_string(&msg, &len); |
| 717 | if (len > COPY_SIZE) |
| 718 | fatal("Received more data than asked for %d > %d", |
| 719 | len, COPY_SIZE); |
| 720 | |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 721 | debug3("In read loop, got %d offset %llu", len, |
Ben Lindstrom | 416d874 | 2001-02-25 02:02:43 +0000 | [diff] [blame] | 722 | (u_int64_t)offset); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 723 | if (atomicio(write, local_fd, data, len) != len) { |
| 724 | error("Couldn't write to \"%s\": %s", local_path, |
| 725 | strerror(errno)); |
| 726 | do_close(fd_in, fd_out, handle, handle_len); |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 727 | status = -1; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 728 | xfree(data); |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 729 | goto done; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 730 | } |
| 731 | |
| 732 | offset += len; |
| 733 | xfree(data); |
| 734 | } |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 735 | status = do_close(fd_in, fd_out, handle, handle_len); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 736 | |
Ben Lindstrom | 9d4f2c8 | 2001-02-15 03:22:45 +0000 | [diff] [blame] | 737 | /* Override umask and utimes if asked */ |
Ben Lindstrom | 6dc75f5 | 2001-02-17 16:47:47 +0000 | [diff] [blame] | 738 | #ifdef HAVE_FCHMOD |
Ben Lindstrom | 9d4f2c8 | 2001-02-15 03:22:45 +0000 | [diff] [blame] | 739 | if (pflag && fchmod(local_fd, mode) == -1) |
Ben Lindstrom | 6dc75f5 | 2001-02-17 16:47:47 +0000 | [diff] [blame] | 740 | #else |
| 741 | if (pflag && chmod(local_path, mode) == -1) |
| 742 | #endif /* HAVE_FCHMOD */ |
Ben Lindstrom | 9d4f2c8 | 2001-02-15 03:22:45 +0000 | [diff] [blame] | 743 | error("Couldn't set mode on \"%s\": %s", local_path, |
| 744 | strerror(errno)); |
| 745 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { |
| 746 | struct timeval tv[2]; |
| 747 | tv[0].tv_sec = a->atime; |
| 748 | tv[1].tv_sec = a->mtime; |
| 749 | tv[0].tv_usec = tv[1].tv_usec = 0; |
| 750 | if (utimes(local_path, tv) == -1) |
| 751 | error("Can't set times on \"%s\": %s", local_path, |
| 752 | strerror(errno)); |
| 753 | } |
| 754 | |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 755 | done: |
| 756 | close(local_fd); |
| 757 | buffer_free(&msg); |
| 758 | xfree(handle); |
| 759 | return status; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | int |
| 763 | do_upload(int fd_in, int fd_out, char *local_path, char *remote_path, |
| 764 | int pflag) |
| 765 | { |
| 766 | int local_fd; |
| 767 | u_int handle_len, id; |
| 768 | u_int64_t offset; |
| 769 | char *handle; |
| 770 | Buffer msg; |
| 771 | struct stat sb; |
| 772 | Attrib a; |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 773 | int status; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 774 | |
| 775 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { |
| 776 | error("Couldn't open local file \"%s\" for reading: %s", |
| 777 | local_path, strerror(errno)); |
| 778 | return(-1); |
| 779 | } |
| 780 | if (fstat(local_fd, &sb) == -1) { |
| 781 | error("Couldn't fstat local file \"%s\": %s", |
| 782 | local_path, strerror(errno)); |
| 783 | close(local_fd); |
| 784 | return(-1); |
| 785 | } |
| 786 | stat_to_attrib(&sb, &a); |
| 787 | |
| 788 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; |
| 789 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; |
| 790 | a.perm &= 0777; |
| 791 | if (!pflag) |
| 792 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; |
| 793 | |
| 794 | buffer_init(&msg); |
| 795 | |
| 796 | /* Send open request */ |
Ben Lindstrom | 288cc39 | 2001-02-09 02:58:04 +0000 | [diff] [blame] | 797 | id = msg_id++; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 798 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
| 799 | buffer_put_int(&msg, id); |
| 800 | buffer_put_cstring(&msg, remote_path); |
| 801 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); |
| 802 | encode_attrib(&msg, &a); |
| 803 | send_msg(fd_out, &msg); |
| 804 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); |
| 805 | |
| 806 | buffer_clear(&msg); |
| 807 | |
| 808 | handle = get_handle(fd_in, id, &handle_len); |
| 809 | if (handle == NULL) { |
| 810 | close(local_fd); |
| 811 | buffer_free(&msg); |
| 812 | return(-1); |
| 813 | } |
| 814 | |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 815 | /* Read from local and write to remote */ |
| 816 | offset = 0; |
| 817 | for(;;) { |
| 818 | int len; |
| 819 | char data[COPY_SIZE]; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 820 | |
| 821 | /* |
| 822 | * Can't use atomicio here because it returns 0 on EOF, thus losing |
| 823 | * the last block of the file |
| 824 | */ |
| 825 | do |
| 826 | len = read(local_fd, data, COPY_SIZE); |
| 827 | while ((len == -1) && (errno == EINTR || errno == EAGAIN)); |
| 828 | |
| 829 | if (len == -1) |
| 830 | fatal("Couldn't read from \"%s\": %s", local_path, |
| 831 | strerror(errno)); |
| 832 | if (len == 0) |
| 833 | break; |
| 834 | |
| 835 | buffer_clear(&msg); |
| 836 | buffer_put_char(&msg, SSH2_FXP_WRITE); |
| 837 | buffer_put_int(&msg, ++id); |
| 838 | buffer_put_string(&msg, handle, handle_len); |
| 839 | buffer_put_int64(&msg, offset); |
| 840 | buffer_put_string(&msg, data, len); |
| 841 | send_msg(fd_out, &msg); |
| 842 | debug3("Sent message SSH2_FXP_WRITE I:%d O:%llu S:%u", |
Ben Lindstrom | 416d874 | 2001-02-25 02:02:43 +0000 | [diff] [blame] | 843 | id, (u_int64_t)offset, len); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 844 | |
| 845 | status = get_status(fd_in, id); |
| 846 | if (status != SSH2_FX_OK) { |
| 847 | error("Couldn't write to remote file \"%s\": %s", |
| 848 | remote_path, fx2txt(status)); |
| 849 | do_close(fd_in, fd_out, handle, handle_len); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 850 | close(local_fd); |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 851 | goto done; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 852 | } |
Kevin Steves | ec1c140 | 2001-02-05 15:39:22 +0000 | [diff] [blame] | 853 | debug3("In write loop, got %d offset %llu", len, |
Ben Lindstrom | 416d874 | 2001-02-25 02:02:43 +0000 | [diff] [blame] | 854 | (u_int64_t)offset); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 855 | |
| 856 | offset += len; |
| 857 | } |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 858 | |
| 859 | if (close(local_fd) == -1) { |
| 860 | error("Couldn't close local file \"%s\": %s", local_path, |
| 861 | strerror(errno)); |
| 862 | do_close(fd_in, fd_out, handle, handle_len); |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 863 | status = -1; |
| 864 | goto done; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 865 | } |
| 866 | |
Ben Lindstrom | 9d4f2c8 | 2001-02-15 03:22:45 +0000 | [diff] [blame] | 867 | /* Override umask and utimes if asked */ |
| 868 | if (pflag) |
| 869 | do_fsetstat(fd_in, fd_out, handle, handle_len, &a); |
| 870 | |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 871 | status = do_close(fd_in, fd_out, handle, handle_len); |
| 872 | |
| 873 | done: |
| 874 | xfree(handle); |
| 875 | buffer_free(&msg); |
| 876 | return status; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 877 | } |