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" |
Kevin Steves | ec1c140 | 2001-02-05 15:39:22 +0000 | [diff] [blame^] | 32 | RCSID("$OpenBSD: sftp-client.c,v 1.3 2001/02/04 15:32:25 stevesk 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 | |
| 51 | void |
| 52 | send_msg(int fd, Buffer *m) |
| 53 | { |
| 54 | int mlen = buffer_len(m); |
| 55 | int len; |
| 56 | Buffer oqueue; |
| 57 | |
| 58 | buffer_init(&oqueue); |
| 59 | buffer_put_int(&oqueue, mlen); |
| 60 | buffer_append(&oqueue, buffer_ptr(m), mlen); |
| 61 | buffer_consume(m, mlen); |
| 62 | |
| 63 | len = atomicio(write, fd, buffer_ptr(&oqueue), buffer_len(&oqueue)); |
| 64 | if (len <= 0) |
| 65 | fatal("Couldn't send packet: %s", strerror(errno)); |
| 66 | |
| 67 | buffer_free(&oqueue); |
| 68 | } |
| 69 | |
| 70 | void |
| 71 | get_msg(int fd, Buffer *m) |
| 72 | { |
| 73 | u_int len, msg_len; |
| 74 | unsigned char buf[4096]; |
| 75 | |
| 76 | len = atomicio(read, fd, buf, 4); |
| 77 | if (len != 4) |
| 78 | fatal("Couldn't read packet: %s", strerror(errno)); |
| 79 | |
| 80 | msg_len = GET_32BIT(buf); |
| 81 | if (msg_len > 256 * 1024) |
| 82 | fatal("Received message too long %d", msg_len); |
| 83 | |
| 84 | while (msg_len) { |
| 85 | len = atomicio(read, fd, buf, MIN(msg_len, sizeof(buf))); |
| 86 | if (len <= 0) |
| 87 | fatal("Couldn't read packet: %s", strerror(errno)); |
| 88 | |
| 89 | msg_len -= len; |
| 90 | buffer_append(m, buf, len); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | void |
| 95 | send_string_request(int fd, u_int id, u_int code, char *s, |
| 96 | u_int len) |
| 97 | { |
| 98 | Buffer msg; |
| 99 | |
| 100 | buffer_init(&msg); |
| 101 | buffer_put_char(&msg, code); |
| 102 | buffer_put_int(&msg, id); |
| 103 | buffer_put_string(&msg, s, len); |
| 104 | send_msg(fd, &msg); |
| 105 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); |
| 106 | buffer_free(&msg); |
| 107 | } |
| 108 | |
| 109 | void |
| 110 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, |
| 111 | u_int len, Attrib *a) |
| 112 | { |
| 113 | Buffer msg; |
| 114 | |
| 115 | buffer_init(&msg); |
| 116 | buffer_put_char(&msg, code); |
| 117 | buffer_put_int(&msg, id); |
| 118 | buffer_put_string(&msg, s, len); |
| 119 | encode_attrib(&msg, a); |
| 120 | send_msg(fd, &msg); |
| 121 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); |
| 122 | buffer_free(&msg); |
| 123 | } |
| 124 | |
| 125 | u_int |
| 126 | get_status(int fd, int expected_id) |
| 127 | { |
| 128 | Buffer msg; |
| 129 | u_int type, id, status; |
| 130 | |
| 131 | buffer_init(&msg); |
| 132 | get_msg(fd, &msg); |
| 133 | type = buffer_get_char(&msg); |
| 134 | id = buffer_get_int(&msg); |
| 135 | |
| 136 | if (id != expected_id) |
| 137 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 138 | if (type != SSH2_FXP_STATUS) |
| 139 | fatal("Expected SSH2_FXP_STATUS(%d) packet, got %d", |
| 140 | SSH2_FXP_STATUS, type); |
| 141 | |
| 142 | status = buffer_get_int(&msg); |
| 143 | buffer_free(&msg); |
| 144 | |
| 145 | debug3("SSH2_FXP_STATUS %d", status); |
| 146 | |
| 147 | return(status); |
| 148 | } |
| 149 | |
| 150 | char * |
| 151 | get_handle(int fd, u_int expected_id, u_int *len) |
| 152 | { |
| 153 | Buffer msg; |
| 154 | u_int type, id; |
| 155 | char *handle; |
| 156 | |
| 157 | buffer_init(&msg); |
| 158 | get_msg(fd, &msg); |
| 159 | type = buffer_get_char(&msg); |
| 160 | id = buffer_get_int(&msg); |
| 161 | |
| 162 | if (id != expected_id) |
| 163 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 164 | if (type == SSH2_FXP_STATUS) { |
| 165 | int status = buffer_get_int(&msg); |
| 166 | |
| 167 | error("Couldn't get handle: %s", fx2txt(status)); |
| 168 | return(NULL); |
| 169 | } else if (type != SSH2_FXP_HANDLE) |
| 170 | fatal("Expected SSH2_FXP_HANDLE(%d) packet, got %d", |
| 171 | SSH2_FXP_HANDLE, type); |
| 172 | |
| 173 | handle = buffer_get_string(&msg, len); |
| 174 | buffer_free(&msg); |
| 175 | |
| 176 | return(handle); |
| 177 | } |
| 178 | |
| 179 | Attrib * |
| 180 | get_decode_stat(int fd, u_int expected_id) |
| 181 | { |
| 182 | Buffer msg; |
| 183 | u_int type, id; |
| 184 | Attrib *a; |
| 185 | |
| 186 | buffer_init(&msg); |
| 187 | get_msg(fd, &msg); |
| 188 | |
| 189 | type = buffer_get_char(&msg); |
| 190 | id = buffer_get_int(&msg); |
| 191 | |
| 192 | debug3("Received stat reply T:%d I:%d", type, id); |
| 193 | if (id != expected_id) |
| 194 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 195 | if (type == SSH2_FXP_STATUS) { |
| 196 | int status = buffer_get_int(&msg); |
| 197 | |
| 198 | error("Couldn't stat remote file: %s", fx2txt(status)); |
| 199 | return(NULL); |
| 200 | } else if (type != SSH2_FXP_ATTRS) { |
| 201 | fatal("Expected SSH2_FXP_ATTRS(%d) packet, got %d", |
| 202 | SSH2_FXP_ATTRS, type); |
| 203 | } |
| 204 | a = decode_attrib(&msg); |
| 205 | buffer_free(&msg); |
| 206 | |
| 207 | return(a); |
| 208 | } |
| 209 | |
| 210 | int |
| 211 | do_init(int fd_in, int fd_out) |
| 212 | { |
| 213 | int type, version; |
| 214 | Buffer msg; |
| 215 | |
| 216 | buffer_init(&msg); |
| 217 | buffer_put_char(&msg, SSH2_FXP_INIT); |
| 218 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); |
| 219 | send_msg(fd_out, &msg); |
| 220 | |
| 221 | buffer_clear(&msg); |
| 222 | |
| 223 | get_msg(fd_in, &msg); |
| 224 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 225 | /* Expecting a VERSION reply */ |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 226 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { |
| 227 | error("Invalid packet back from SSH2_FXP_INIT (type %d)", |
| 228 | type); |
| 229 | buffer_free(&msg); |
| 230 | return(-1); |
| 231 | } |
| 232 | version = buffer_get_int(&msg); |
| 233 | |
| 234 | debug2("Remote version: %d", version); |
| 235 | |
| 236 | /* Check for extensions */ |
| 237 | while (buffer_len(&msg) > 0) { |
| 238 | char *name = buffer_get_string(&msg, NULL); |
| 239 | char *value = buffer_get_string(&msg, NULL); |
| 240 | |
| 241 | debug2("Init extension: \"%s\"", name); |
| 242 | xfree(name); |
| 243 | xfree(value); |
| 244 | } |
| 245 | |
| 246 | buffer_free(&msg); |
| 247 | return(0); |
| 248 | } |
| 249 | |
| 250 | int |
| 251 | do_close(int fd_in, int fd_out, char *handle, u_int handle_len) |
| 252 | { |
| 253 | u_int id, status; |
| 254 | Buffer msg; |
| 255 | |
| 256 | buffer_init(&msg); |
| 257 | |
| 258 | id = arc4random(); |
| 259 | buffer_put_char(&msg, SSH2_FXP_CLOSE); |
| 260 | buffer_put_int(&msg, id); |
| 261 | buffer_put_string(&msg, handle, handle_len); |
| 262 | send_msg(fd_out, &msg); |
| 263 | debug3("Sent message SSH2_FXP_CLOSE I:%d", id); |
| 264 | |
| 265 | status = get_status(fd_in, id); |
| 266 | if (status != SSH2_FX_OK) |
| 267 | error("Couldn't close file: %s", fx2txt(status)); |
| 268 | |
| 269 | buffer_free(&msg); |
| 270 | |
| 271 | return(status); |
| 272 | } |
| 273 | |
| 274 | int |
| 275 | do_ls(int fd_in, int fd_out, char *path) |
| 276 | { |
| 277 | Buffer msg; |
| 278 | u_int type, id, handle_len, i, expected_id; |
| 279 | char *handle; |
| 280 | |
| 281 | id = arc4random(); |
| 282 | |
| 283 | buffer_init(&msg); |
| 284 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); |
| 285 | buffer_put_int(&msg, id); |
| 286 | buffer_put_cstring(&msg, path); |
| 287 | send_msg(fd_out, &msg); |
| 288 | |
| 289 | buffer_clear(&msg); |
| 290 | |
| 291 | handle = get_handle(fd_in, id, &handle_len); |
| 292 | if (handle == NULL) |
| 293 | return(-1); |
| 294 | |
| 295 | for(;;) { |
| 296 | int count; |
| 297 | |
| 298 | expected_id = ++id; |
| 299 | |
| 300 | debug3("Sending SSH2_FXP_READDIR I:%d", id); |
| 301 | |
| 302 | buffer_clear(&msg); |
| 303 | buffer_put_char(&msg, SSH2_FXP_READDIR); |
| 304 | buffer_put_int(&msg, id); |
| 305 | buffer_put_string(&msg, handle, handle_len); |
| 306 | send_msg(fd_out, &msg); |
| 307 | |
| 308 | buffer_clear(&msg); |
| 309 | |
| 310 | get_msg(fd_in, &msg); |
| 311 | |
| 312 | type = buffer_get_char(&msg); |
| 313 | id = buffer_get_int(&msg); |
| 314 | |
| 315 | debug3("Received reply T:%d I:%d", type, id); |
| 316 | |
| 317 | if (id != expected_id) |
| 318 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 319 | |
| 320 | if (type == SSH2_FXP_STATUS) { |
| 321 | int status = buffer_get_int(&msg); |
| 322 | |
| 323 | debug3("Received SSH2_FXP_STATUS %d", status); |
| 324 | |
| 325 | if (status == SSH2_FX_EOF) { |
| 326 | break; |
| 327 | } else { |
| 328 | error("Couldn't read directory: %s", |
| 329 | fx2txt(status)); |
| 330 | do_close(fd_in, fd_out, handle, handle_len); |
| 331 | return(NULL); |
| 332 | } |
| 333 | } else if (type != SSH2_FXP_NAME) |
| 334 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", |
| 335 | SSH2_FXP_NAME, type); |
| 336 | |
| 337 | count = buffer_get_int(&msg); |
| 338 | debug3("Received %i SSH2_FXP_NAME responses", count); |
| 339 | for(i = 0; i < count; i++) { |
| 340 | char *filename, *longname; |
| 341 | Attrib *a; |
| 342 | |
| 343 | filename = buffer_get_string(&msg, NULL); |
| 344 | longname = buffer_get_string(&msg, NULL); |
| 345 | a = decode_attrib(&msg); |
| 346 | |
| 347 | printf("%s\n", longname); |
| 348 | |
| 349 | xfree(filename); |
| 350 | xfree(longname); |
| 351 | } |
| 352 | } |
| 353 | |
| 354 | buffer_free(&msg); |
| 355 | do_close(fd_in, fd_out, handle, handle_len); |
| 356 | xfree(handle); |
| 357 | |
| 358 | return(0); |
| 359 | } |
| 360 | |
| 361 | int |
| 362 | do_rm(int fd_in, int fd_out, char *path) |
| 363 | { |
| 364 | u_int status, id; |
| 365 | |
| 366 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); |
| 367 | |
| 368 | id = arc4random(); |
| 369 | send_string_request(fd_out, id, SSH2_FXP_REMOVE, path, strlen(path)); |
| 370 | status = get_status(fd_in, id); |
| 371 | if (status != SSH2_FX_OK) |
| 372 | error("Couldn't delete file: %s", fx2txt(status)); |
| 373 | return(status); |
| 374 | } |
| 375 | |
| 376 | int |
| 377 | do_mkdir(int fd_in, int fd_out, char *path, Attrib *a) |
| 378 | { |
| 379 | u_int status, id; |
| 380 | |
| 381 | id = arc4random(); |
| 382 | send_string_attrs_request(fd_out, id, SSH2_FXP_MKDIR, path, |
| 383 | strlen(path), a); |
| 384 | |
| 385 | status = get_status(fd_in, id); |
| 386 | if (status != SSH2_FX_OK) |
| 387 | error("Couldn't create directory: %s", fx2txt(status)); |
| 388 | |
| 389 | return(status); |
| 390 | } |
| 391 | |
| 392 | int |
| 393 | do_rmdir(int fd_in, int fd_out, char *path) |
| 394 | { |
| 395 | u_int status, id; |
| 396 | |
| 397 | id = arc4random(); |
| 398 | send_string_request(fd_out, id, SSH2_FXP_RMDIR, path, strlen(path)); |
| 399 | |
| 400 | status = get_status(fd_in, id); |
| 401 | if (status != SSH2_FX_OK) |
| 402 | error("Couldn't remove directory: %s", fx2txt(status)); |
| 403 | |
| 404 | return(status); |
| 405 | } |
| 406 | |
| 407 | Attrib * |
| 408 | do_stat(int fd_in, int fd_out, char *path) |
| 409 | { |
| 410 | u_int id; |
| 411 | |
| 412 | id = arc4random(); |
| 413 | send_string_request(fd_out, id, SSH2_FXP_STAT, path, strlen(path)); |
| 414 | return(get_decode_stat(fd_in, id)); |
| 415 | } |
| 416 | |
| 417 | Attrib * |
| 418 | do_lstat(int fd_in, int fd_out, char *path) |
| 419 | { |
| 420 | u_int id; |
| 421 | |
| 422 | id = arc4random(); |
| 423 | send_string_request(fd_out, id, SSH2_FXP_LSTAT, path, strlen(path)); |
| 424 | return(get_decode_stat(fd_in, id)); |
| 425 | } |
| 426 | |
| 427 | Attrib * |
| 428 | do_fstat(int fd_in, int fd_out, char *handle, |
| 429 | u_int handle_len) |
| 430 | { |
| 431 | u_int id; |
| 432 | |
| 433 | id = arc4random(); |
| 434 | send_string_request(fd_out, id, SSH2_FXP_FSTAT, handle, handle_len); |
| 435 | return(get_decode_stat(fd_in, id)); |
| 436 | } |
| 437 | |
| 438 | int |
| 439 | do_setstat(int fd_in, int fd_out, char *path, Attrib *a) |
| 440 | { |
| 441 | u_int status, id; |
| 442 | |
| 443 | id = arc4random(); |
| 444 | send_string_attrs_request(fd_out, id, SSH2_FXP_SETSTAT, path, |
| 445 | strlen(path), a); |
| 446 | |
| 447 | status = get_status(fd_in, id); |
| 448 | if (status != SSH2_FX_OK) |
| 449 | error("Couldn't setstat on \"%s\": %s", path, |
| 450 | fx2txt(status)); |
| 451 | |
| 452 | return(status); |
| 453 | } |
| 454 | |
| 455 | int |
| 456 | do_fsetstat(int fd_in, int fd_out, char *handle, u_int handle_len, |
| 457 | Attrib *a) |
| 458 | { |
| 459 | u_int status, id; |
| 460 | |
| 461 | id = arc4random(); |
| 462 | send_string_attrs_request(fd_out, id, SSH2_FXP_FSETSTAT, handle, |
| 463 | handle_len, a); |
| 464 | |
| 465 | status = get_status(fd_in, id); |
| 466 | if (status != SSH2_FX_OK) |
| 467 | error("Couldn't fsetstat: %s", fx2txt(status)); |
| 468 | |
| 469 | return(status); |
| 470 | } |
| 471 | |
| 472 | char * |
| 473 | do_realpath(int fd_in, int fd_out, char *path) |
| 474 | { |
| 475 | Buffer msg; |
| 476 | u_int type, expected_id, count, id; |
| 477 | char *filename, *longname; |
| 478 | Attrib *a; |
| 479 | |
| 480 | expected_id = id = arc4random(); |
| 481 | send_string_request(fd_out, id, SSH2_FXP_REALPATH, path, |
| 482 | strlen(path)); |
| 483 | |
| 484 | buffer_init(&msg); |
| 485 | |
| 486 | get_msg(fd_in, &msg); |
| 487 | type = buffer_get_char(&msg); |
| 488 | id = buffer_get_int(&msg); |
| 489 | |
| 490 | if (id != expected_id) |
| 491 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 492 | |
| 493 | if (type == SSH2_FXP_STATUS) { |
| 494 | u_int status = buffer_get_int(&msg); |
| 495 | |
| 496 | error("Couldn't canonicalise: %s", fx2txt(status)); |
| 497 | return(NULL); |
| 498 | } else if (type != SSH2_FXP_NAME) |
| 499 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", |
| 500 | SSH2_FXP_NAME, type); |
| 501 | |
| 502 | count = buffer_get_int(&msg); |
| 503 | if (count != 1) |
| 504 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); |
| 505 | |
| 506 | filename = buffer_get_string(&msg, NULL); |
| 507 | longname = buffer_get_string(&msg, NULL); |
| 508 | a = decode_attrib(&msg); |
| 509 | |
| 510 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); |
| 511 | |
| 512 | xfree(longname); |
| 513 | |
| 514 | buffer_free(&msg); |
| 515 | |
| 516 | return(filename); |
| 517 | } |
| 518 | |
| 519 | int |
| 520 | do_rename(int fd_in, int fd_out, char *oldpath, char *newpath) |
| 521 | { |
| 522 | Buffer msg; |
| 523 | u_int status, id; |
| 524 | |
| 525 | buffer_init(&msg); |
| 526 | |
| 527 | /* Send rename request */ |
| 528 | id = arc4random(); |
| 529 | buffer_put_char(&msg, SSH2_FXP_RENAME); |
| 530 | buffer_put_int(&msg, id); |
| 531 | buffer_put_cstring(&msg, oldpath); |
| 532 | buffer_put_cstring(&msg, newpath); |
| 533 | send_msg(fd_out, &msg); |
| 534 | debug3("Sent message SSH2_FXP_RENAME \"%s\" -> \"%s\"", oldpath, |
| 535 | newpath); |
| 536 | buffer_free(&msg); |
| 537 | |
| 538 | status = get_status(fd_in, id); |
| 539 | if (status != SSH2_FX_OK) |
| 540 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, newpath, |
| 541 | fx2txt(status)); |
| 542 | |
| 543 | return(status); |
| 544 | } |
| 545 | |
| 546 | int |
| 547 | do_download(int fd_in, int fd_out, char *remote_path, char *local_path, |
| 548 | int pflag) |
| 549 | { |
| 550 | int local_fd; |
| 551 | u_int expected_id, handle_len, mode, type, id; |
| 552 | u_int64_t offset; |
| 553 | char *handle; |
| 554 | Buffer msg; |
| 555 | Attrib junk, *a; |
| 556 | |
| 557 | a = do_stat(fd_in, fd_out, remote_path); |
| 558 | if (a == NULL) |
| 559 | return(-1); |
| 560 | |
| 561 | /* XXX: should we preserve set[ug]id? */ |
| 562 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) |
| 563 | mode = S_IWRITE | (a->perm & 0777); |
| 564 | else |
| 565 | mode = 0666; |
| 566 | |
| 567 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, mode); |
| 568 | if (local_fd == -1) { |
| 569 | error("Couldn't open local file \"%s\" for writing: %s", |
| 570 | local_path, strerror(errno)); |
| 571 | return(errno); |
| 572 | } |
| 573 | |
| 574 | /* Override umask and utimes if asked */ |
| 575 | if (pflag && fchmod(local_fd, mode) == -1) |
| 576 | error("Couldn't set mode on \"%s\": %s", local_path, |
| 577 | strerror(errno)); |
| 578 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { |
| 579 | struct timeval tv; |
| 580 | |
| 581 | tv.tv_sec = a->atime; |
| 582 | tv.tv_usec = a->mtime; |
| 583 | if (utimes(local_path, &tv) == -1) |
| 584 | error("Can't set times on \"%s\": %s", local_path, |
| 585 | strerror(errno)); |
| 586 | } |
| 587 | |
| 588 | buffer_init(&msg); |
| 589 | |
| 590 | /* Send open request */ |
| 591 | id = arc4random(); |
| 592 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
| 593 | buffer_put_int(&msg, id); |
| 594 | buffer_put_cstring(&msg, remote_path); |
| 595 | buffer_put_int(&msg, SSH2_FXF_READ); |
| 596 | attrib_clear(&junk); /* Send empty attributes */ |
| 597 | encode_attrib(&msg, &junk); |
| 598 | send_msg(fd_out, &msg); |
| 599 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); |
| 600 | |
| 601 | handle = get_handle(fd_in, id, &handle_len); |
| 602 | if (handle == NULL) { |
| 603 | buffer_free(&msg); |
| 604 | close(local_fd); |
| 605 | return(-1); |
| 606 | } |
| 607 | |
| 608 | /* Read from remote and write to local */ |
| 609 | offset = 0; |
| 610 | for(;;) { |
| 611 | u_int len; |
| 612 | char *data; |
| 613 | |
| 614 | expected_id = ++id; |
| 615 | |
| 616 | buffer_clear(&msg); |
| 617 | buffer_put_char(&msg, SSH2_FXP_READ); |
| 618 | buffer_put_int(&msg, id); |
| 619 | buffer_put_string(&msg, handle, handle_len); |
| 620 | buffer_put_int64(&msg, offset); |
| 621 | buffer_put_int(&msg, COPY_SIZE); |
| 622 | send_msg(fd_out, &msg); |
| 623 | debug3("Sent message SSH2_FXP_READ I:%d O:%llu S:%u", |
Kevin Steves | ec1c140 | 2001-02-05 15:39:22 +0000 | [diff] [blame^] | 624 | id, (unsigned long long)offset, COPY_SIZE); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 625 | |
| 626 | buffer_clear(&msg); |
| 627 | |
| 628 | get_msg(fd_in, &msg); |
| 629 | type = buffer_get_char(&msg); |
| 630 | id = buffer_get_int(&msg); |
| 631 | debug3("Received reply T:%d I:%d", type, id); |
| 632 | if (id != expected_id) |
| 633 | fatal("ID mismatch (%d != %d)", id, expected_id); |
| 634 | if (type == SSH2_FXP_STATUS) { |
| 635 | int status = buffer_get_int(&msg); |
| 636 | |
| 637 | if (status == SSH2_FX_EOF) |
| 638 | break; |
| 639 | else { |
| 640 | error("Couldn't read from remote " |
| 641 | "file \"%s\" : %s", remote_path, |
| 642 | fx2txt(status)); |
| 643 | do_close(fd_in, fd_out, handle, handle_len); |
| 644 | xfree(handle); |
| 645 | close(local_fd); |
| 646 | buffer_free(&msg); |
| 647 | return(status); |
| 648 | } |
| 649 | } else if (type != SSH2_FXP_DATA) { |
| 650 | fatal("Expected SSH2_FXP_DATA(%d) packet, got %d", |
| 651 | SSH2_FXP_DATA, type); |
| 652 | } |
| 653 | |
| 654 | data = buffer_get_string(&msg, &len); |
| 655 | if (len > COPY_SIZE) |
| 656 | fatal("Received more data than asked for %d > %d", |
| 657 | len, COPY_SIZE); |
| 658 | |
Kevin Steves | ec1c140 | 2001-02-05 15:39:22 +0000 | [diff] [blame^] | 659 | debug3("In read loop, got %d offset %lld", len, |
| 660 | (unsigned long long)offset); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 661 | if (atomicio(write, local_fd, data, len) != len) { |
| 662 | error("Couldn't write to \"%s\": %s", local_path, |
| 663 | strerror(errno)); |
| 664 | do_close(fd_in, fd_out, handle, handle_len); |
| 665 | xfree(handle); |
| 666 | close(local_fd); |
| 667 | xfree(data); |
| 668 | buffer_free(&msg); |
| 669 | return(-1); |
| 670 | } |
| 671 | |
| 672 | offset += len; |
| 673 | xfree(data); |
| 674 | } |
| 675 | xfree(handle); |
| 676 | buffer_free(&msg); |
| 677 | close(local_fd); |
| 678 | |
| 679 | return(do_close(fd_in, fd_out, handle, handle_len)); |
| 680 | } |
| 681 | |
| 682 | int |
| 683 | do_upload(int fd_in, int fd_out, char *local_path, char *remote_path, |
| 684 | int pflag) |
| 685 | { |
| 686 | int local_fd; |
| 687 | u_int handle_len, id; |
| 688 | u_int64_t offset; |
| 689 | char *handle; |
| 690 | Buffer msg; |
| 691 | struct stat sb; |
| 692 | Attrib a; |
| 693 | |
| 694 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { |
| 695 | error("Couldn't open local file \"%s\" for reading: %s", |
| 696 | local_path, strerror(errno)); |
| 697 | return(-1); |
| 698 | } |
| 699 | if (fstat(local_fd, &sb) == -1) { |
| 700 | error("Couldn't fstat local file \"%s\": %s", |
| 701 | local_path, strerror(errno)); |
| 702 | close(local_fd); |
| 703 | return(-1); |
| 704 | } |
| 705 | stat_to_attrib(&sb, &a); |
| 706 | |
| 707 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; |
| 708 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; |
| 709 | a.perm &= 0777; |
| 710 | if (!pflag) |
| 711 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; |
| 712 | |
| 713 | buffer_init(&msg); |
| 714 | |
| 715 | /* Send open request */ |
| 716 | id = arc4random(); |
| 717 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
| 718 | buffer_put_int(&msg, id); |
| 719 | buffer_put_cstring(&msg, remote_path); |
| 720 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); |
| 721 | encode_attrib(&msg, &a); |
| 722 | send_msg(fd_out, &msg); |
| 723 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); |
| 724 | |
| 725 | buffer_clear(&msg); |
| 726 | |
| 727 | handle = get_handle(fd_in, id, &handle_len); |
| 728 | if (handle == NULL) { |
| 729 | close(local_fd); |
| 730 | buffer_free(&msg); |
| 731 | return(-1); |
| 732 | } |
| 733 | |
| 734 | /* Override umask and utimes if asked */ |
| 735 | if (pflag) |
| 736 | do_fsetstat(fd_in, fd_out, handle, handle_len, &a); |
| 737 | |
| 738 | /* Read from local and write to remote */ |
| 739 | offset = 0; |
| 740 | for(;;) { |
| 741 | int len; |
| 742 | char data[COPY_SIZE]; |
| 743 | u_int status; |
| 744 | |
| 745 | /* |
| 746 | * Can't use atomicio here because it returns 0 on EOF, thus losing |
| 747 | * the last block of the file |
| 748 | */ |
| 749 | do |
| 750 | len = read(local_fd, data, COPY_SIZE); |
| 751 | while ((len == -1) && (errno == EINTR || errno == EAGAIN)); |
| 752 | |
| 753 | if (len == -1) |
| 754 | fatal("Couldn't read from \"%s\": %s", local_path, |
| 755 | strerror(errno)); |
| 756 | if (len == 0) |
| 757 | break; |
| 758 | |
| 759 | buffer_clear(&msg); |
| 760 | buffer_put_char(&msg, SSH2_FXP_WRITE); |
| 761 | buffer_put_int(&msg, ++id); |
| 762 | buffer_put_string(&msg, handle, handle_len); |
| 763 | buffer_put_int64(&msg, offset); |
| 764 | buffer_put_string(&msg, data, len); |
| 765 | send_msg(fd_out, &msg); |
| 766 | debug3("Sent message SSH2_FXP_WRITE I:%d O:%llu S:%u", |
Kevin Steves | ec1c140 | 2001-02-05 15:39:22 +0000 | [diff] [blame^] | 767 | id, (unsigned long long)offset, len); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 768 | |
| 769 | status = get_status(fd_in, id); |
| 770 | if (status != SSH2_FX_OK) { |
| 771 | error("Couldn't write to remote file \"%s\": %s", |
| 772 | remote_path, fx2txt(status)); |
| 773 | do_close(fd_in, fd_out, handle, handle_len); |
| 774 | xfree(handle); |
| 775 | close(local_fd); |
| 776 | return(-1); |
| 777 | } |
Kevin Steves | ec1c140 | 2001-02-05 15:39:22 +0000 | [diff] [blame^] | 778 | debug3("In write loop, got %d offset %llu", len, |
| 779 | (unsigned long long)offset); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 780 | |
| 781 | offset += len; |
| 782 | } |
| 783 | xfree(handle); |
| 784 | buffer_free(&msg); |
| 785 | |
| 786 | if (close(local_fd) == -1) { |
| 787 | error("Couldn't close local file \"%s\": %s", local_path, |
| 788 | strerror(errno)); |
| 789 | do_close(fd_in, fd_out, handle, handle_len); |
| 790 | return(-1); |
| 791 | } |
| 792 | |
| 793 | return(do_close(fd_in, fd_out, handle, handle_len)); |
| 794 | } |