| 1 | /* |
| 2 | * psftp.c: (platform-independent) front end for PSFTP. |
| 3 | */ |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <stdarg.h> |
| 8 | #include <assert.h> |
| 9 | #include <limits.h> |
| 10 | |
| 11 | #define PUTTY_DO_GLOBALS |
| 12 | #include "putty.h" |
| 13 | #include "psftp.h" |
| 14 | #include "storage.h" |
| 15 | #include "ssh.h" |
| 16 | #include "sftp.h" |
| 17 | #include "int64.h" |
| 18 | |
| 19 | /* |
| 20 | * Since SFTP is a request-response oriented protocol, it requires |
| 21 | * no buffer management: when we send data, we stop and wait for an |
| 22 | * acknowledgement _anyway_, and so we can't possibly overfill our |
| 23 | * send buffer. |
| 24 | */ |
| 25 | |
| 26 | static int psftp_connect(char *userhost, char *user, int portnumber); |
| 27 | static int do_sftp_init(void); |
| 28 | void do_sftp_cleanup(); |
| 29 | |
| 30 | /* ---------------------------------------------------------------------- |
| 31 | * sftp client state. |
| 32 | */ |
| 33 | |
| 34 | char *pwd, *homedir; |
| 35 | static Backend *back; |
| 36 | static void *backhandle; |
| 37 | static Config cfg; |
| 38 | |
| 39 | /* ---------------------------------------------------------------------- |
| 40 | * Higher-level helper functions used in commands. |
| 41 | */ |
| 42 | |
| 43 | /* |
| 44 | * Attempt to canonify a pathname starting from the pwd. If |
| 45 | * canonification fails, at least fall back to returning a _valid_ |
| 46 | * pathname (though it may be ugly, eg /home/simon/../foobar). |
| 47 | */ |
| 48 | char *canonify(char *name) |
| 49 | { |
| 50 | char *fullname, *canonname; |
| 51 | struct sftp_packet *pktin; |
| 52 | struct sftp_request *req, *rreq; |
| 53 | |
| 54 | if (name[0] == '/') { |
| 55 | fullname = dupstr(name); |
| 56 | } else { |
| 57 | char *slash; |
| 58 | if (pwd[strlen(pwd) - 1] == '/') |
| 59 | slash = ""; |
| 60 | else |
| 61 | slash = "/"; |
| 62 | fullname = dupcat(pwd, slash, name, NULL); |
| 63 | } |
| 64 | |
| 65 | sftp_register(req = fxp_realpath_send(fullname)); |
| 66 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 67 | assert(rreq == req); |
| 68 | canonname = fxp_realpath_recv(pktin, rreq); |
| 69 | |
| 70 | if (canonname) { |
| 71 | sfree(fullname); |
| 72 | return canonname; |
| 73 | } else { |
| 74 | /* |
| 75 | * Attempt number 2. Some FXP_REALPATH implementations |
| 76 | * (glibc-based ones, in particular) require the _whole_ |
| 77 | * path to point to something that exists, whereas others |
| 78 | * (BSD-based) only require all but the last component to |
| 79 | * exist. So if the first call failed, we should strip off |
| 80 | * everything from the last slash onwards and try again, |
| 81 | * then put the final component back on. |
| 82 | * |
| 83 | * Special cases: |
| 84 | * |
| 85 | * - if the last component is "/." or "/..", then we don't |
| 86 | * bother trying this because there's no way it can work. |
| 87 | * |
| 88 | * - if the thing actually ends with a "/", we remove it |
| 89 | * before we start. Except if the string is "/" itself |
| 90 | * (although I can't see why we'd have got here if so, |
| 91 | * because surely "/" would have worked the first |
| 92 | * time?), in which case we don't bother. |
| 93 | * |
| 94 | * - if there's no slash in the string at all, give up in |
| 95 | * confusion (we expect at least one because of the way |
| 96 | * we constructed the string). |
| 97 | */ |
| 98 | |
| 99 | int i; |
| 100 | char *returnname; |
| 101 | |
| 102 | i = strlen(fullname); |
| 103 | if (i > 2 && fullname[i - 1] == '/') |
| 104 | fullname[--i] = '\0'; /* strip trailing / unless at pos 0 */ |
| 105 | while (i > 0 && fullname[--i] != '/'); |
| 106 | |
| 107 | /* |
| 108 | * Give up on special cases. |
| 109 | */ |
| 110 | if (fullname[i] != '/' || /* no slash at all */ |
| 111 | !strcmp(fullname + i, "/.") || /* ends in /. */ |
| 112 | !strcmp(fullname + i, "/..") || /* ends in /.. */ |
| 113 | !strcmp(fullname, "/")) { |
| 114 | return fullname; |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | * Now i points at the slash. Deal with the final special |
| 119 | * case i==0 (ie the whole path was "/nonexistentfile"). |
| 120 | */ |
| 121 | fullname[i] = '\0'; /* separate the string */ |
| 122 | if (i == 0) { |
| 123 | sftp_register(req = fxp_realpath_send("/")); |
| 124 | } else { |
| 125 | sftp_register(req = fxp_realpath_send(fullname)); |
| 126 | } |
| 127 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 128 | assert(rreq == req); |
| 129 | canonname = fxp_realpath_recv(pktin, rreq); |
| 130 | |
| 131 | if (!canonname) |
| 132 | return fullname; /* even that failed; give up */ |
| 133 | |
| 134 | /* |
| 135 | * We have a canonical name for all but the last path |
| 136 | * component. Concatenate the last component and return. |
| 137 | */ |
| 138 | returnname = dupcat(canonname, |
| 139 | canonname[strlen(canonname) - 1] == |
| 140 | '/' ? "" : "/", fullname + i + 1, NULL); |
| 141 | sfree(fullname); |
| 142 | sfree(canonname); |
| 143 | return returnname; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | * Return a pointer to the portion of str that comes after the last |
| 149 | * slash (or backslash or colon, if `local' is TRUE). |
| 150 | */ |
| 151 | static char *stripslashes(char *str, int local) |
| 152 | { |
| 153 | char *p; |
| 154 | |
| 155 | if (local) { |
| 156 | p = strchr(str, ':'); |
| 157 | if (p) str = p+1; |
| 158 | } |
| 159 | |
| 160 | p = strrchr(str, '/'); |
| 161 | if (p) str = p+1; |
| 162 | |
| 163 | if (local) { |
| 164 | p = strrchr(str, '\\'); |
| 165 | if (p) str = p+1; |
| 166 | } |
| 167 | |
| 168 | return str; |
| 169 | } |
| 170 | |
| 171 | /* |
| 172 | * qsort comparison routine for fxp_name structures. Sorts by real |
| 173 | * file name. |
| 174 | */ |
| 175 | static int sftp_name_compare(const void *av, const void *bv) |
| 176 | { |
| 177 | const struct fxp_name *const *a = (const struct fxp_name *const *) av; |
| 178 | const struct fxp_name *const *b = (const struct fxp_name *const *) bv; |
| 179 | return strcmp((*a)->filename, (*b)->filename); |
| 180 | } |
| 181 | |
| 182 | /* |
| 183 | * Likewise, but for a bare char *. |
| 184 | */ |
| 185 | static int bare_name_compare(const void *av, const void *bv) |
| 186 | { |
| 187 | const char **a = (const char **) av; |
| 188 | const char **b = (const char **) bv; |
| 189 | return strcmp(*a, *b); |
| 190 | } |
| 191 | |
| 192 | static void not_connected(void) |
| 193 | { |
| 194 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
| 195 | } |
| 196 | |
| 197 | /* ---------------------------------------------------------------------- |
| 198 | * The meat of the `get' and `put' commands. |
| 199 | */ |
| 200 | int sftp_get_file(char *fname, char *outfname, int recurse, int restart) |
| 201 | { |
| 202 | struct fxp_handle *fh; |
| 203 | struct sftp_packet *pktin; |
| 204 | struct sftp_request *req, *rreq; |
| 205 | struct fxp_xfer *xfer; |
| 206 | uint64 offset; |
| 207 | WFile *file; |
| 208 | int ret, shown_err = FALSE; |
| 209 | |
| 210 | /* |
| 211 | * In recursive mode, see if we're dealing with a directory. |
| 212 | * (If we're not in recursive mode, we need not even check: the |
| 213 | * subsequent FXP_OPEN will return a usable error message.) |
| 214 | */ |
| 215 | if (recurse) { |
| 216 | struct fxp_attrs attrs; |
| 217 | int result; |
| 218 | |
| 219 | sftp_register(req = fxp_stat_send(fname)); |
| 220 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 221 | assert(rreq == req); |
| 222 | result = fxp_stat_recv(pktin, rreq, &attrs); |
| 223 | |
| 224 | if (result && |
| 225 | (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) && |
| 226 | (attrs.permissions & 0040000)) { |
| 227 | |
| 228 | struct fxp_handle *dirhandle; |
| 229 | int nnames, namesize; |
| 230 | struct fxp_name **ournames; |
| 231 | struct fxp_names *names; |
| 232 | int i; |
| 233 | |
| 234 | /* |
| 235 | * First, attempt to create the destination directory, |
| 236 | * unless it already exists. |
| 237 | */ |
| 238 | if (file_type(outfname) != FILE_TYPE_DIRECTORY && |
| 239 | !create_directory(outfname)) { |
| 240 | printf("%s: Cannot create directory\n", outfname); |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * Now get the list of filenames in the remote |
| 246 | * directory. |
| 247 | */ |
| 248 | sftp_register(req = fxp_opendir_send(fname)); |
| 249 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 250 | assert(rreq == req); |
| 251 | dirhandle = fxp_opendir_recv(pktin, rreq); |
| 252 | |
| 253 | if (!dirhandle) { |
| 254 | printf("%s: unable to open directory: %s\n", |
| 255 | fname, fxp_error()); |
| 256 | return 0; |
| 257 | } |
| 258 | nnames = namesize = 0; |
| 259 | ournames = NULL; |
| 260 | while (1) { |
| 261 | int i; |
| 262 | |
| 263 | sftp_register(req = fxp_readdir_send(dirhandle)); |
| 264 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 265 | assert(rreq == req); |
| 266 | names = fxp_readdir_recv(pktin, rreq); |
| 267 | |
| 268 | if (names == NULL) { |
| 269 | if (fxp_error_type() == SSH_FX_EOF) |
| 270 | break; |
| 271 | printf("%s: reading directory: %s\n", fname, fxp_error()); |
| 272 | sfree(ournames); |
| 273 | return 0; |
| 274 | } |
| 275 | if (names->nnames == 0) { |
| 276 | fxp_free_names(names); |
| 277 | break; |
| 278 | } |
| 279 | if (nnames + names->nnames >= namesize) { |
| 280 | namesize += names->nnames + 128; |
| 281 | ournames = sresize(ournames, namesize, struct fxp_name *); |
| 282 | } |
| 283 | for (i = 0; i < names->nnames; i++) |
| 284 | if (strcmp(names->names[i].filename, ".") && |
| 285 | strcmp(names->names[i].filename, "..")) { |
| 286 | if (!vet_filename(names->names[i].filename)) { |
| 287 | printf("ignoring potentially dangerous server-" |
| 288 | "supplied filename '%s'\n", |
| 289 | names->names[i].filename); |
| 290 | } else { |
| 291 | ournames[nnames++] = |
| 292 | fxp_dup_name(&names->names[i]); |
| 293 | } |
| 294 | } |
| 295 | fxp_free_names(names); |
| 296 | } |
| 297 | sftp_register(req = fxp_close_send(dirhandle)); |
| 298 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 299 | assert(rreq == req); |
| 300 | fxp_close_recv(pktin, rreq); |
| 301 | |
| 302 | /* |
| 303 | * Sort the names into a clear order. This ought to |
| 304 | * make things more predictable when we're doing a |
| 305 | * reget of the same directory, just in case two |
| 306 | * readdirs on the same remote directory return a |
| 307 | * different order. |
| 308 | */ |
| 309 | qsort(ournames, nnames, sizeof(*ournames), sftp_name_compare); |
| 310 | |
| 311 | /* |
| 312 | * If we're in restart mode, find the last filename on |
| 313 | * this list that already exists. We may have to do a |
| 314 | * reget on _that_ file, but shouldn't have to do |
| 315 | * anything on the previous files. |
| 316 | * |
| 317 | * If none of them exists, of course, we start at 0. |
| 318 | */ |
| 319 | i = 0; |
| 320 | while (i < nnames) { |
| 321 | char *nextoutfname; |
| 322 | int ret; |
| 323 | if (outfname) |
| 324 | nextoutfname = dir_file_cat(outfname, |
| 325 | ournames[i]->filename); |
| 326 | else |
| 327 | nextoutfname = dupstr(ournames[i]->filename); |
| 328 | ret = (file_type(nextoutfname) == FILE_TYPE_NONEXISTENT); |
| 329 | sfree(nextoutfname); |
| 330 | if (ret) |
| 331 | break; |
| 332 | i++; |
| 333 | } |
| 334 | if (i > 0) |
| 335 | i--; |
| 336 | |
| 337 | /* |
| 338 | * Now we're ready to recurse. Starting at ournames[i] |
| 339 | * and continuing on to the end of the list, we |
| 340 | * construct a new source and target file name, and |
| 341 | * call sftp_get_file again. |
| 342 | */ |
| 343 | for (; i < nnames; i++) { |
| 344 | char *nextfname, *nextoutfname; |
| 345 | int ret; |
| 346 | |
| 347 | nextfname = dupcat(fname, "/", ournames[i]->filename, NULL); |
| 348 | if (outfname) |
| 349 | nextoutfname = dir_file_cat(outfname, |
| 350 | ournames[i]->filename); |
| 351 | else |
| 352 | nextoutfname = dupstr(ournames[i]->filename); |
| 353 | ret = sftp_get_file(nextfname, nextoutfname, recurse, restart); |
| 354 | restart = FALSE; /* after first partial file, do full */ |
| 355 | sfree(nextoutfname); |
| 356 | sfree(nextfname); |
| 357 | if (!ret) { |
| 358 | for (i = 0; i < nnames; i++) { |
| 359 | fxp_free_name(ournames[i]); |
| 360 | } |
| 361 | sfree(ournames); |
| 362 | return 0; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | /* |
| 367 | * Done this recursion level. Free everything. |
| 368 | */ |
| 369 | for (i = 0; i < nnames; i++) { |
| 370 | fxp_free_name(ournames[i]); |
| 371 | } |
| 372 | sfree(ournames); |
| 373 | |
| 374 | return 1; |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | sftp_register(req = fxp_open_send(fname, SSH_FXF_READ)); |
| 379 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 380 | assert(rreq == req); |
| 381 | fh = fxp_open_recv(pktin, rreq); |
| 382 | |
| 383 | if (!fh) { |
| 384 | printf("%s: open for read: %s\n", fname, fxp_error()); |
| 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | if (restart) { |
| 389 | file = open_existing_wfile(outfname, NULL); |
| 390 | } else { |
| 391 | file = open_new_file(outfname); |
| 392 | } |
| 393 | |
| 394 | if (!file) { |
| 395 | printf("local: unable to open %s\n", outfname); |
| 396 | |
| 397 | sftp_register(req = fxp_close_send(fh)); |
| 398 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 399 | assert(rreq == req); |
| 400 | fxp_close_recv(pktin, rreq); |
| 401 | |
| 402 | return 0; |
| 403 | } |
| 404 | |
| 405 | if (restart) { |
| 406 | char decbuf[30]; |
| 407 | if (seek_file(file, uint64_make(0,0) , FROM_END) == -1) { |
| 408 | printf("reget: cannot restart %s - file too large\n", |
| 409 | outfname); |
| 410 | sftp_register(req = fxp_close_send(fh)); |
| 411 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 412 | assert(rreq == req); |
| 413 | fxp_close_recv(pktin, rreq); |
| 414 | |
| 415 | return 0; |
| 416 | } |
| 417 | |
| 418 | offset = get_file_posn(file); |
| 419 | uint64_decimal(offset, decbuf); |
| 420 | printf("reget: restarting at file position %s\n", decbuf); |
| 421 | } else { |
| 422 | offset = uint64_make(0, 0); |
| 423 | } |
| 424 | |
| 425 | printf("remote:%s => local:%s\n", fname, outfname); |
| 426 | |
| 427 | /* |
| 428 | * FIXME: we can use FXP_FSTAT here to get the file size, and |
| 429 | * thus put up a progress bar. |
| 430 | */ |
| 431 | ret = 1; |
| 432 | xfer = xfer_download_init(fh, offset); |
| 433 | while (!xfer_done(xfer)) { |
| 434 | void *vbuf; |
| 435 | int ret, len; |
| 436 | int wpos, wlen; |
| 437 | |
| 438 | xfer_download_queue(xfer); |
| 439 | pktin = sftp_recv(); |
| 440 | ret = xfer_download_gotpkt(xfer, pktin); |
| 441 | |
| 442 | if (ret < 0) { |
| 443 | if (!shown_err) { |
| 444 | printf("error while reading: %s\n", fxp_error()); |
| 445 | shown_err = TRUE; |
| 446 | } |
| 447 | ret = 0; |
| 448 | } |
| 449 | |
| 450 | while (xfer_download_data(xfer, &vbuf, &len)) { |
| 451 | unsigned char *buf = (unsigned char *)vbuf; |
| 452 | |
| 453 | wpos = 0; |
| 454 | while (wpos < len) { |
| 455 | wlen = write_to_file(file, buf + wpos, len - wpos); |
| 456 | if (wlen <= 0) { |
| 457 | printf("error while writing local file\n"); |
| 458 | ret = 0; |
| 459 | xfer_set_error(xfer); |
| 460 | } |
| 461 | wpos += wlen; |
| 462 | } |
| 463 | if (wpos < len) { /* we had an error */ |
| 464 | ret = 0; |
| 465 | xfer_set_error(xfer); |
| 466 | } |
| 467 | |
| 468 | sfree(vbuf); |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | xfer_cleanup(xfer); |
| 473 | |
| 474 | close_wfile(file); |
| 475 | |
| 476 | sftp_register(req = fxp_close_send(fh)); |
| 477 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 478 | assert(rreq == req); |
| 479 | fxp_close_recv(pktin, rreq); |
| 480 | |
| 481 | return ret; |
| 482 | } |
| 483 | |
| 484 | int sftp_put_file(char *fname, char *outfname, int recurse, int restart) |
| 485 | { |
| 486 | struct fxp_handle *fh; |
| 487 | struct fxp_xfer *xfer; |
| 488 | struct sftp_packet *pktin; |
| 489 | struct sftp_request *req, *rreq; |
| 490 | uint64 offset; |
| 491 | RFile *file; |
| 492 | int ret, err, eof; |
| 493 | |
| 494 | /* |
| 495 | * In recursive mode, see if we're dealing with a directory. |
| 496 | * (If we're not in recursive mode, we need not even check: the |
| 497 | * subsequent fopen will return an error message.) |
| 498 | */ |
| 499 | if (recurse && file_type(fname) == FILE_TYPE_DIRECTORY) { |
| 500 | struct fxp_attrs attrs; |
| 501 | int result; |
| 502 | int nnames, namesize; |
| 503 | char *name, **ournames; |
| 504 | DirHandle *dh; |
| 505 | int i; |
| 506 | |
| 507 | /* |
| 508 | * First, attempt to create the destination directory, |
| 509 | * unless it already exists. |
| 510 | */ |
| 511 | sftp_register(req = fxp_stat_send(outfname)); |
| 512 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 513 | assert(rreq == req); |
| 514 | result = fxp_stat_recv(pktin, rreq, &attrs); |
| 515 | if (!result || |
| 516 | !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) || |
| 517 | !(attrs.permissions & 0040000)) { |
| 518 | sftp_register(req = fxp_mkdir_send(outfname)); |
| 519 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 520 | assert(rreq == req); |
| 521 | result = fxp_mkdir_recv(pktin, rreq); |
| 522 | |
| 523 | if (!result) { |
| 524 | printf("%s: create directory: %s\n", |
| 525 | outfname, fxp_error()); |
| 526 | return 0; |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | /* |
| 531 | * Now get the list of filenames in the local directory. |
| 532 | */ |
| 533 | nnames = namesize = 0; |
| 534 | ournames = NULL; |
| 535 | |
| 536 | dh = open_directory(fname); |
| 537 | if (!dh) { |
| 538 | printf("%s: unable to open directory\n", fname); |
| 539 | return 0; |
| 540 | } |
| 541 | while ((name = read_filename(dh)) != NULL) { |
| 542 | if (nnames >= namesize) { |
| 543 | namesize += 128; |
| 544 | ournames = sresize(ournames, namesize, char *); |
| 545 | } |
| 546 | ournames[nnames++] = name; |
| 547 | } |
| 548 | close_directory(dh); |
| 549 | |
| 550 | /* |
| 551 | * Sort the names into a clear order. This ought to make |
| 552 | * things more predictable when we're doing a reput of the |
| 553 | * same directory, just in case two readdirs on the same |
| 554 | * local directory return a different order. |
| 555 | */ |
| 556 | qsort(ournames, nnames, sizeof(*ournames), bare_name_compare); |
| 557 | |
| 558 | /* |
| 559 | * If we're in restart mode, find the last filename on this |
| 560 | * list that already exists. We may have to do a reput on |
| 561 | * _that_ file, but shouldn't have to do anything on the |
| 562 | * previous files. |
| 563 | * |
| 564 | * If none of them exists, of course, we start at 0. |
| 565 | */ |
| 566 | i = 0; |
| 567 | while (i < nnames) { |
| 568 | char *nextoutfname; |
| 569 | nextoutfname = dupcat(outfname, "/", ournames[i], NULL); |
| 570 | sftp_register(req = fxp_stat_send(nextoutfname)); |
| 571 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 572 | assert(rreq == req); |
| 573 | result = fxp_stat_recv(pktin, rreq, &attrs); |
| 574 | sfree(nextoutfname); |
| 575 | if (!result) |
| 576 | break; |
| 577 | i++; |
| 578 | } |
| 579 | if (i > 0) |
| 580 | i--; |
| 581 | |
| 582 | /* |
| 583 | * Now we're ready to recurse. Starting at ournames[i] |
| 584 | * and continuing on to the end of the list, we |
| 585 | * construct a new source and target file name, and |
| 586 | * call sftp_put_file again. |
| 587 | */ |
| 588 | for (; i < nnames; i++) { |
| 589 | char *nextfname, *nextoutfname; |
| 590 | int ret; |
| 591 | |
| 592 | if (fname) |
| 593 | nextfname = dir_file_cat(fname, ournames[i]); |
| 594 | else |
| 595 | nextfname = dupstr(ournames[i]); |
| 596 | nextoutfname = dupcat(outfname, "/", ournames[i], NULL); |
| 597 | ret = sftp_put_file(nextfname, nextoutfname, recurse, restart); |
| 598 | restart = FALSE; /* after first partial file, do full */ |
| 599 | sfree(nextoutfname); |
| 600 | sfree(nextfname); |
| 601 | if (!ret) { |
| 602 | for (i = 0; i < nnames; i++) { |
| 603 | sfree(ournames[i]); |
| 604 | } |
| 605 | sfree(ournames); |
| 606 | return 0; |
| 607 | } |
| 608 | } |
| 609 | |
| 610 | /* |
| 611 | * Done this recursion level. Free everything. |
| 612 | */ |
| 613 | for (i = 0; i < nnames; i++) { |
| 614 | sfree(ournames[i]); |
| 615 | } |
| 616 | sfree(ournames); |
| 617 | |
| 618 | return 1; |
| 619 | } |
| 620 | |
| 621 | file = open_existing_file(fname, NULL, NULL, NULL); |
| 622 | if (!file) { |
| 623 | printf("local: unable to open %s\n", fname); |
| 624 | return 0; |
| 625 | } |
| 626 | if (restart) { |
| 627 | sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE)); |
| 628 | } else { |
| 629 | sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE | |
| 630 | SSH_FXF_CREAT | SSH_FXF_TRUNC)); |
| 631 | } |
| 632 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 633 | assert(rreq == req); |
| 634 | fh = fxp_open_recv(pktin, rreq); |
| 635 | |
| 636 | if (!fh) { |
| 637 | printf("%s: open for write: %s\n", outfname, fxp_error()); |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | if (restart) { |
| 642 | char decbuf[30]; |
| 643 | struct fxp_attrs attrs; |
| 644 | int ret; |
| 645 | |
| 646 | sftp_register(req = fxp_fstat_send(fh)); |
| 647 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 648 | assert(rreq == req); |
| 649 | ret = fxp_fstat_recv(pktin, rreq, &attrs); |
| 650 | |
| 651 | if (!ret) { |
| 652 | printf("read size of %s: %s\n", outfname, fxp_error()); |
| 653 | return 0; |
| 654 | } |
| 655 | if (!(attrs.flags & SSH_FILEXFER_ATTR_SIZE)) { |
| 656 | printf("read size of %s: size was not given\n", outfname); |
| 657 | return 0; |
| 658 | } |
| 659 | offset = attrs.size; |
| 660 | uint64_decimal(offset, decbuf); |
| 661 | printf("reput: restarting at file position %s\n", decbuf); |
| 662 | |
| 663 | if (seek_file((WFile *)file, offset, FROM_START) != 0) |
| 664 | seek_file((WFile *)file, uint64_make(0,0), FROM_END); /* *shrug* */ |
| 665 | } else { |
| 666 | offset = uint64_make(0, 0); |
| 667 | } |
| 668 | |
| 669 | printf("local:%s => remote:%s\n", fname, outfname); |
| 670 | |
| 671 | /* |
| 672 | * FIXME: we can use FXP_FSTAT here to get the file size, and |
| 673 | * thus put up a progress bar. |
| 674 | */ |
| 675 | ret = 1; |
| 676 | xfer = xfer_upload_init(fh, offset); |
| 677 | err = eof = 0; |
| 678 | while ((!err && !eof) || !xfer_done(xfer)) { |
| 679 | char buffer[4096]; |
| 680 | int len, ret; |
| 681 | |
| 682 | while (xfer_upload_ready(xfer) && !err && !eof) { |
| 683 | len = read_from_file(file, buffer, sizeof(buffer)); |
| 684 | if (len == -1) { |
| 685 | printf("error while reading local file\n"); |
| 686 | err = 1; |
| 687 | } else if (len == 0) { |
| 688 | eof = 1; |
| 689 | } else { |
| 690 | xfer_upload_data(xfer, buffer, len); |
| 691 | } |
| 692 | } |
| 693 | |
| 694 | if (!xfer_done(xfer)) { |
| 695 | pktin = sftp_recv(); |
| 696 | ret = xfer_upload_gotpkt(xfer, pktin); |
| 697 | if (!ret) { |
| 698 | printf("error while writing: %s\n", fxp_error()); |
| 699 | err = 1; |
| 700 | } |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | xfer_cleanup(xfer); |
| 705 | |
| 706 | sftp_register(req = fxp_close_send(fh)); |
| 707 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 708 | assert(rreq == req); |
| 709 | fxp_close_recv(pktin, rreq); |
| 710 | |
| 711 | close_rfile(file); |
| 712 | |
| 713 | return ret; |
| 714 | } |
| 715 | |
| 716 | /* ---------------------------------------------------------------------- |
| 717 | * A remote wildcard matcher, providing a similar interface to the |
| 718 | * local one in psftp.h. |
| 719 | */ |
| 720 | |
| 721 | typedef struct SftpWildcardMatcher { |
| 722 | struct fxp_handle *dirh; |
| 723 | struct fxp_names *names; |
| 724 | int namepos; |
| 725 | char *wildcard, *prefix; |
| 726 | } SftpWildcardMatcher; |
| 727 | |
| 728 | SftpWildcardMatcher *sftp_begin_wildcard_matching(char *name) |
| 729 | { |
| 730 | struct sftp_packet *pktin; |
| 731 | struct sftp_request *req, *rreq; |
| 732 | char *wildcard; |
| 733 | char *unwcdir, *tmpdir, *cdir; |
| 734 | int len, check; |
| 735 | SftpWildcardMatcher *swcm; |
| 736 | struct fxp_handle *dirh; |
| 737 | |
| 738 | /* |
| 739 | * We don't handle multi-level wildcards; so we expect to find |
| 740 | * a fully specified directory part, followed by a wildcard |
| 741 | * after that. |
| 742 | */ |
| 743 | wildcard = stripslashes(name, 0); |
| 744 | |
| 745 | unwcdir = dupstr(name); |
| 746 | len = wildcard - name; |
| 747 | unwcdir[len] = '\0'; |
| 748 | if (len > 0 && unwcdir[len-1] == '/') |
| 749 | unwcdir[len-1] = '\0'; |
| 750 | tmpdir = snewn(1 + len, char); |
| 751 | check = wc_unescape(tmpdir, unwcdir); |
| 752 | sfree(tmpdir); |
| 753 | |
| 754 | if (!check) { |
| 755 | printf("Multiple-level wildcards are not supported\n"); |
| 756 | sfree(unwcdir); |
| 757 | return NULL; |
| 758 | } |
| 759 | |
| 760 | cdir = canonify(unwcdir); |
| 761 | |
| 762 | sftp_register(req = fxp_opendir_send(cdir)); |
| 763 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 764 | assert(rreq == req); |
| 765 | dirh = fxp_opendir_recv(pktin, rreq); |
| 766 | |
| 767 | if (dirh) { |
| 768 | swcm = snew(SftpWildcardMatcher); |
| 769 | swcm->dirh = dirh; |
| 770 | swcm->names = NULL; |
| 771 | swcm->wildcard = dupstr(wildcard); |
| 772 | swcm->prefix = unwcdir; |
| 773 | } else { |
| 774 | printf("Unable to open %s: %s\n", cdir, fxp_error()); |
| 775 | swcm = NULL; |
| 776 | sfree(unwcdir); |
| 777 | } |
| 778 | |
| 779 | sfree(cdir); |
| 780 | |
| 781 | return swcm; |
| 782 | } |
| 783 | |
| 784 | char *sftp_wildcard_get_filename(SftpWildcardMatcher *swcm) |
| 785 | { |
| 786 | struct fxp_name *name; |
| 787 | struct sftp_packet *pktin; |
| 788 | struct sftp_request *req, *rreq; |
| 789 | |
| 790 | while (1) { |
| 791 | if (swcm->names && swcm->namepos >= swcm->names->nnames) { |
| 792 | fxp_free_names(swcm->names); |
| 793 | swcm->names = NULL; |
| 794 | } |
| 795 | |
| 796 | if (!swcm->names) { |
| 797 | sftp_register(req = fxp_readdir_send(swcm->dirh)); |
| 798 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 799 | assert(rreq == req); |
| 800 | swcm->names = fxp_readdir_recv(pktin, rreq); |
| 801 | |
| 802 | if (!swcm->names) { |
| 803 | if (fxp_error_type() != SSH_FX_EOF) |
| 804 | printf("%s: reading directory: %s\n", swcm->prefix, |
| 805 | fxp_error()); |
| 806 | return NULL; |
| 807 | } |
| 808 | |
| 809 | swcm->namepos = 0; |
| 810 | } |
| 811 | |
| 812 | assert(swcm->names && swcm->namepos < swcm->names->nnames); |
| 813 | |
| 814 | name = &swcm->names->names[swcm->namepos++]; |
| 815 | |
| 816 | if (!strcmp(name->filename, ".") || !strcmp(name->filename, "..")) |
| 817 | continue; /* expected bad filenames */ |
| 818 | |
| 819 | if (!vet_filename(name->filename)) { |
| 820 | printf("ignoring potentially dangerous server-" |
| 821 | "supplied filename '%s'\n", name->filename); |
| 822 | continue; /* unexpected bad filename */ |
| 823 | } |
| 824 | |
| 825 | if (!wc_match(swcm->wildcard, name->filename)) |
| 826 | continue; /* doesn't match the wildcard */ |
| 827 | |
| 828 | /* |
| 829 | * We have a working filename. Return it. |
| 830 | */ |
| 831 | return dupprintf("%s%s%s", swcm->prefix, |
| 832 | (!swcm->prefix[0] || |
| 833 | swcm->prefix[strlen(swcm->prefix)-1]=='/' ? |
| 834 | "" : "/"), |
| 835 | name->filename); |
| 836 | } |
| 837 | } |
| 838 | |
| 839 | void sftp_finish_wildcard_matching(SftpWildcardMatcher *swcm) |
| 840 | { |
| 841 | struct sftp_packet *pktin; |
| 842 | struct sftp_request *req, *rreq; |
| 843 | |
| 844 | sftp_register(req = fxp_close_send(swcm->dirh)); |
| 845 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 846 | assert(rreq == req); |
| 847 | fxp_close_recv(pktin, rreq); |
| 848 | |
| 849 | if (swcm->names) |
| 850 | fxp_free_names(swcm->names); |
| 851 | |
| 852 | sfree(swcm->prefix); |
| 853 | sfree(swcm->wildcard); |
| 854 | |
| 855 | sfree(swcm); |
| 856 | } |
| 857 | |
| 858 | /* |
| 859 | * General function to match a potential wildcard in a filename |
| 860 | * argument and iterate over every matching file. Used in several |
| 861 | * PSFTP commands (rmdir, rm, chmod, mv). |
| 862 | */ |
| 863 | int wildcard_iterate(char *filename, int (*func)(void *, char *), void *ctx) |
| 864 | { |
| 865 | char *unwcfname, *newname, *cname; |
| 866 | int is_wc, ret; |
| 867 | |
| 868 | unwcfname = snewn(strlen(filename)+1, char); |
| 869 | is_wc = !wc_unescape(unwcfname, filename); |
| 870 | |
| 871 | if (is_wc) { |
| 872 | SftpWildcardMatcher *swcm = sftp_begin_wildcard_matching(filename); |
| 873 | int matched = FALSE; |
| 874 | sfree(unwcfname); |
| 875 | |
| 876 | if (!swcm) |
| 877 | return 0; |
| 878 | |
| 879 | ret = 1; |
| 880 | |
| 881 | while ( (newname = sftp_wildcard_get_filename(swcm)) != NULL ) { |
| 882 | cname = canonify(newname); |
| 883 | if (!cname) { |
| 884 | printf("%s: canonify: %s\n", newname, fxp_error()); |
| 885 | ret = 0; |
| 886 | } |
| 887 | matched = TRUE; |
| 888 | ret &= func(ctx, cname); |
| 889 | sfree(cname); |
| 890 | } |
| 891 | |
| 892 | if (!matched) { |
| 893 | /* Politely warn the user that nothing matched. */ |
| 894 | printf("%s: nothing matched\n", filename); |
| 895 | } |
| 896 | |
| 897 | sftp_finish_wildcard_matching(swcm); |
| 898 | } else { |
| 899 | cname = canonify(unwcfname); |
| 900 | if (!cname) { |
| 901 | printf("%s: canonify: %s\n", filename, fxp_error()); |
| 902 | ret = 0; |
| 903 | } |
| 904 | ret = func(ctx, cname); |
| 905 | sfree(cname); |
| 906 | sfree(unwcfname); |
| 907 | } |
| 908 | |
| 909 | return ret; |
| 910 | } |
| 911 | |
| 912 | /* |
| 913 | * Handy helper function. |
| 914 | */ |
| 915 | int is_wildcard(char *name) |
| 916 | { |
| 917 | char *unwcfname = snewn(strlen(name)+1, char); |
| 918 | int is_wc = !wc_unescape(unwcfname, name); |
| 919 | sfree(unwcfname); |
| 920 | return is_wc; |
| 921 | } |
| 922 | |
| 923 | /* ---------------------------------------------------------------------- |
| 924 | * Actual sftp commands. |
| 925 | */ |
| 926 | struct sftp_command { |
| 927 | char **words; |
| 928 | int nwords, wordssize; |
| 929 | int (*obey) (struct sftp_command *); /* returns <0 to quit */ |
| 930 | }; |
| 931 | |
| 932 | int sftp_cmd_null(struct sftp_command *cmd) |
| 933 | { |
| 934 | return 1; /* success */ |
| 935 | } |
| 936 | |
| 937 | int sftp_cmd_unknown(struct sftp_command *cmd) |
| 938 | { |
| 939 | printf("psftp: unknown command \"%s\"\n", cmd->words[0]); |
| 940 | return 0; /* failure */ |
| 941 | } |
| 942 | |
| 943 | int sftp_cmd_quit(struct sftp_command *cmd) |
| 944 | { |
| 945 | return -1; |
| 946 | } |
| 947 | |
| 948 | int sftp_cmd_close(struct sftp_command *cmd) |
| 949 | { |
| 950 | if (back == NULL) { |
| 951 | not_connected(); |
| 952 | return 0; |
| 953 | } |
| 954 | |
| 955 | if (back != NULL && back->connected(backhandle)) { |
| 956 | char ch; |
| 957 | back->special(backhandle, TS_EOF); |
| 958 | sftp_recvdata(&ch, 1); |
| 959 | } |
| 960 | do_sftp_cleanup(); |
| 961 | |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | /* |
| 966 | * List a directory. If no arguments are given, list pwd; otherwise |
| 967 | * list the directory given in words[1]. |
| 968 | */ |
| 969 | int sftp_cmd_ls(struct sftp_command *cmd) |
| 970 | { |
| 971 | struct fxp_handle *dirh; |
| 972 | struct fxp_names *names; |
| 973 | struct fxp_name **ournames; |
| 974 | int nnames, namesize; |
| 975 | char *dir, *cdir, *unwcdir, *wildcard; |
| 976 | struct sftp_packet *pktin; |
| 977 | struct sftp_request *req, *rreq; |
| 978 | int i; |
| 979 | |
| 980 | if (back == NULL) { |
| 981 | not_connected(); |
| 982 | return 0; |
| 983 | } |
| 984 | |
| 985 | if (cmd->nwords < 2) |
| 986 | dir = "."; |
| 987 | else |
| 988 | dir = cmd->words[1]; |
| 989 | |
| 990 | unwcdir = snewn(1 + strlen(dir), char); |
| 991 | if (wc_unescape(unwcdir, dir)) { |
| 992 | dir = unwcdir; |
| 993 | wildcard = NULL; |
| 994 | } else { |
| 995 | char *tmpdir; |
| 996 | int len, check; |
| 997 | |
| 998 | wildcard = stripslashes(dir, 0); |
| 999 | unwcdir = dupstr(dir); |
| 1000 | len = wildcard - dir; |
| 1001 | unwcdir[len] = '\0'; |
| 1002 | if (len > 0 && unwcdir[len-1] == '/') |
| 1003 | unwcdir[len-1] = '\0'; |
| 1004 | tmpdir = snewn(1 + len, char); |
| 1005 | check = wc_unescape(tmpdir, unwcdir); |
| 1006 | sfree(tmpdir); |
| 1007 | if (!check) { |
| 1008 | printf("Multiple-level wildcards are not supported\n"); |
| 1009 | sfree(unwcdir); |
| 1010 | return 0; |
| 1011 | } |
| 1012 | dir = unwcdir; |
| 1013 | } |
| 1014 | |
| 1015 | cdir = canonify(dir); |
| 1016 | if (!cdir) { |
| 1017 | printf("%s: canonify: %s\n", dir, fxp_error()); |
| 1018 | sfree(unwcdir); |
| 1019 | return 0; |
| 1020 | } |
| 1021 | |
| 1022 | printf("Listing directory %s\n", cdir); |
| 1023 | |
| 1024 | sftp_register(req = fxp_opendir_send(cdir)); |
| 1025 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1026 | assert(rreq == req); |
| 1027 | dirh = fxp_opendir_recv(pktin, rreq); |
| 1028 | |
| 1029 | if (dirh == NULL) { |
| 1030 | printf("Unable to open %s: %s\n", dir, fxp_error()); |
| 1031 | } else { |
| 1032 | nnames = namesize = 0; |
| 1033 | ournames = NULL; |
| 1034 | |
| 1035 | while (1) { |
| 1036 | |
| 1037 | sftp_register(req = fxp_readdir_send(dirh)); |
| 1038 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1039 | assert(rreq == req); |
| 1040 | names = fxp_readdir_recv(pktin, rreq); |
| 1041 | |
| 1042 | if (names == NULL) { |
| 1043 | if (fxp_error_type() == SSH_FX_EOF) |
| 1044 | break; |
| 1045 | printf("Reading directory %s: %s\n", dir, fxp_error()); |
| 1046 | break; |
| 1047 | } |
| 1048 | if (names->nnames == 0) { |
| 1049 | fxp_free_names(names); |
| 1050 | break; |
| 1051 | } |
| 1052 | |
| 1053 | if (nnames + names->nnames >= namesize) { |
| 1054 | namesize += names->nnames + 128; |
| 1055 | ournames = sresize(ournames, namesize, struct fxp_name *); |
| 1056 | } |
| 1057 | |
| 1058 | for (i = 0; i < names->nnames; i++) |
| 1059 | if (!wildcard || wc_match(wildcard, names->names[i].filename)) |
| 1060 | ournames[nnames++] = fxp_dup_name(&names->names[i]); |
| 1061 | |
| 1062 | fxp_free_names(names); |
| 1063 | } |
| 1064 | sftp_register(req = fxp_close_send(dirh)); |
| 1065 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1066 | assert(rreq == req); |
| 1067 | fxp_close_recv(pktin, rreq); |
| 1068 | |
| 1069 | /* |
| 1070 | * Now we have our filenames. Sort them by actual file |
| 1071 | * name, and then output the longname parts. |
| 1072 | */ |
| 1073 | qsort(ournames, nnames, sizeof(*ournames), sftp_name_compare); |
| 1074 | |
| 1075 | /* |
| 1076 | * And print them. |
| 1077 | */ |
| 1078 | for (i = 0; i < nnames; i++) { |
| 1079 | printf("%s\n", ournames[i]->longname); |
| 1080 | fxp_free_name(ournames[i]); |
| 1081 | } |
| 1082 | sfree(ournames); |
| 1083 | } |
| 1084 | |
| 1085 | sfree(cdir); |
| 1086 | sfree(unwcdir); |
| 1087 | |
| 1088 | return 1; |
| 1089 | } |
| 1090 | |
| 1091 | /* |
| 1092 | * Change directories. We do this by canonifying the new name, then |
| 1093 | * trying to OPENDIR it. Only if that succeeds do we set the new pwd. |
| 1094 | */ |
| 1095 | int sftp_cmd_cd(struct sftp_command *cmd) |
| 1096 | { |
| 1097 | struct fxp_handle *dirh; |
| 1098 | struct sftp_packet *pktin; |
| 1099 | struct sftp_request *req, *rreq; |
| 1100 | char *dir; |
| 1101 | |
| 1102 | if (back == NULL) { |
| 1103 | not_connected(); |
| 1104 | return 0; |
| 1105 | } |
| 1106 | |
| 1107 | if (cmd->nwords < 2) |
| 1108 | dir = dupstr(homedir); |
| 1109 | else |
| 1110 | dir = canonify(cmd->words[1]); |
| 1111 | |
| 1112 | if (!dir) { |
| 1113 | printf("%s: canonify: %s\n", dir, fxp_error()); |
| 1114 | return 0; |
| 1115 | } |
| 1116 | |
| 1117 | sftp_register(req = fxp_opendir_send(dir)); |
| 1118 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1119 | assert(rreq == req); |
| 1120 | dirh = fxp_opendir_recv(pktin, rreq); |
| 1121 | |
| 1122 | if (!dirh) { |
| 1123 | printf("Directory %s: %s\n", dir, fxp_error()); |
| 1124 | sfree(dir); |
| 1125 | return 0; |
| 1126 | } |
| 1127 | |
| 1128 | sftp_register(req = fxp_close_send(dirh)); |
| 1129 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1130 | assert(rreq == req); |
| 1131 | fxp_close_recv(pktin, rreq); |
| 1132 | |
| 1133 | sfree(pwd); |
| 1134 | pwd = dir; |
| 1135 | printf("Remote directory is now %s\n", pwd); |
| 1136 | |
| 1137 | return 1; |
| 1138 | } |
| 1139 | |
| 1140 | /* |
| 1141 | * Print current directory. Easy as pie. |
| 1142 | */ |
| 1143 | int sftp_cmd_pwd(struct sftp_command *cmd) |
| 1144 | { |
| 1145 | if (back == NULL) { |
| 1146 | not_connected(); |
| 1147 | return 0; |
| 1148 | } |
| 1149 | |
| 1150 | printf("Remote directory is %s\n", pwd); |
| 1151 | return 1; |
| 1152 | } |
| 1153 | |
| 1154 | /* |
| 1155 | * Get a file and save it at the local end. We have three very |
| 1156 | * similar commands here. The basic one is `get'; `reget' differs |
| 1157 | * in that it checks for the existence of the destination file and |
| 1158 | * starts from where a previous aborted transfer left off; `mget' |
| 1159 | * differs in that it interprets all its arguments as files to |
| 1160 | * transfer (never as a different local name for a remote file) and |
| 1161 | * can handle wildcards. |
| 1162 | */ |
| 1163 | int sftp_general_get(struct sftp_command *cmd, int restart, int multiple) |
| 1164 | { |
| 1165 | char *fname, *unwcfname, *origfname, *origwfname, *outfname; |
| 1166 | int i, ret; |
| 1167 | int recurse = FALSE; |
| 1168 | |
| 1169 | if (back == NULL) { |
| 1170 | not_connected(); |
| 1171 | return 0; |
| 1172 | } |
| 1173 | |
| 1174 | i = 1; |
| 1175 | while (i < cmd->nwords && cmd->words[i][0] == '-') { |
| 1176 | if (!strcmp(cmd->words[i], "--")) { |
| 1177 | /* finish processing options */ |
| 1178 | i++; |
| 1179 | break; |
| 1180 | } else if (!strcmp(cmd->words[i], "-r")) { |
| 1181 | recurse = TRUE; |
| 1182 | } else { |
| 1183 | printf("%s: unrecognised option '%s'\n", cmd->words[0], cmd->words[i]); |
| 1184 | return 0; |
| 1185 | } |
| 1186 | i++; |
| 1187 | } |
| 1188 | |
| 1189 | if (i >= cmd->nwords) { |
| 1190 | printf("%s: expects a filename\n", cmd->words[0]); |
| 1191 | return 0; |
| 1192 | } |
| 1193 | |
| 1194 | ret = 1; |
| 1195 | do { |
| 1196 | SftpWildcardMatcher *swcm; |
| 1197 | |
| 1198 | origfname = cmd->words[i++]; |
| 1199 | unwcfname = snewn(strlen(origfname)+1, char); |
| 1200 | |
| 1201 | if (multiple && !wc_unescape(unwcfname, origfname)) { |
| 1202 | swcm = sftp_begin_wildcard_matching(origfname); |
| 1203 | if (!swcm) { |
| 1204 | sfree(unwcfname); |
| 1205 | continue; |
| 1206 | } |
| 1207 | origwfname = sftp_wildcard_get_filename(swcm); |
| 1208 | if (!origwfname) { |
| 1209 | /* Politely warn the user that nothing matched. */ |
| 1210 | printf("%s: nothing matched\n", origfname); |
| 1211 | sftp_finish_wildcard_matching(swcm); |
| 1212 | sfree(unwcfname); |
| 1213 | continue; |
| 1214 | } |
| 1215 | } else { |
| 1216 | origwfname = origfname; |
| 1217 | swcm = NULL; |
| 1218 | } |
| 1219 | |
| 1220 | while (origwfname) { |
| 1221 | fname = canonify(origwfname); |
| 1222 | |
| 1223 | if (!fname) { |
| 1224 | printf("%s: canonify: %s\n", origwfname, fxp_error()); |
| 1225 | sfree(unwcfname); |
| 1226 | return 0; |
| 1227 | } |
| 1228 | |
| 1229 | if (!multiple && i < cmd->nwords) |
| 1230 | outfname = cmd->words[i++]; |
| 1231 | else |
| 1232 | outfname = stripslashes(origwfname, 0); |
| 1233 | |
| 1234 | ret = sftp_get_file(fname, outfname, recurse, restart); |
| 1235 | |
| 1236 | sfree(fname); |
| 1237 | |
| 1238 | if (swcm) { |
| 1239 | sfree(origwfname); |
| 1240 | origwfname = sftp_wildcard_get_filename(swcm); |
| 1241 | } else { |
| 1242 | origwfname = NULL; |
| 1243 | } |
| 1244 | } |
| 1245 | sfree(unwcfname); |
| 1246 | if (swcm) |
| 1247 | sftp_finish_wildcard_matching(swcm); |
| 1248 | if (!ret) |
| 1249 | return ret; |
| 1250 | |
| 1251 | } while (multiple && i < cmd->nwords); |
| 1252 | |
| 1253 | return ret; |
| 1254 | } |
| 1255 | int sftp_cmd_get(struct sftp_command *cmd) |
| 1256 | { |
| 1257 | return sftp_general_get(cmd, 0, 0); |
| 1258 | } |
| 1259 | int sftp_cmd_mget(struct sftp_command *cmd) |
| 1260 | { |
| 1261 | return sftp_general_get(cmd, 0, 1); |
| 1262 | } |
| 1263 | int sftp_cmd_reget(struct sftp_command *cmd) |
| 1264 | { |
| 1265 | return sftp_general_get(cmd, 1, 0); |
| 1266 | } |
| 1267 | |
| 1268 | /* |
| 1269 | * Send a file and store it at the remote end. We have three very |
| 1270 | * similar commands here. The basic one is `put'; `reput' differs |
| 1271 | * in that it checks for the existence of the destination file and |
| 1272 | * starts from where a previous aborted transfer left off; `mput' |
| 1273 | * differs in that it interprets all its arguments as files to |
| 1274 | * transfer (never as a different remote name for a local file) and |
| 1275 | * can handle wildcards. |
| 1276 | */ |
| 1277 | int sftp_general_put(struct sftp_command *cmd, int restart, int multiple) |
| 1278 | { |
| 1279 | char *fname, *wfname, *origoutfname, *outfname; |
| 1280 | int i, ret; |
| 1281 | int recurse = FALSE; |
| 1282 | |
| 1283 | if (back == NULL) { |
| 1284 | not_connected(); |
| 1285 | return 0; |
| 1286 | } |
| 1287 | |
| 1288 | i = 1; |
| 1289 | while (i < cmd->nwords && cmd->words[i][0] == '-') { |
| 1290 | if (!strcmp(cmd->words[i], "--")) { |
| 1291 | /* finish processing options */ |
| 1292 | i++; |
| 1293 | break; |
| 1294 | } else if (!strcmp(cmd->words[i], "-r")) { |
| 1295 | recurse = TRUE; |
| 1296 | } else { |
| 1297 | printf("%s: unrecognised option '%s'\n", cmd->words[0], cmd->words[i]); |
| 1298 | return 0; |
| 1299 | } |
| 1300 | i++; |
| 1301 | } |
| 1302 | |
| 1303 | if (i >= cmd->nwords) { |
| 1304 | printf("%s: expects a filename\n", cmd->words[0]); |
| 1305 | return 0; |
| 1306 | } |
| 1307 | |
| 1308 | ret = 1; |
| 1309 | do { |
| 1310 | WildcardMatcher *wcm; |
| 1311 | fname = cmd->words[i++]; |
| 1312 | |
| 1313 | if (multiple && test_wildcard(fname, FALSE) == WCTYPE_WILDCARD) { |
| 1314 | wcm = begin_wildcard_matching(fname); |
| 1315 | wfname = wildcard_get_filename(wcm); |
| 1316 | if (!wfname) { |
| 1317 | /* Politely warn the user that nothing matched. */ |
| 1318 | printf("%s: nothing matched\n", fname); |
| 1319 | finish_wildcard_matching(wcm); |
| 1320 | continue; |
| 1321 | } |
| 1322 | } else { |
| 1323 | wfname = fname; |
| 1324 | wcm = NULL; |
| 1325 | } |
| 1326 | |
| 1327 | while (wfname) { |
| 1328 | if (!multiple && i < cmd->nwords) |
| 1329 | origoutfname = cmd->words[i++]; |
| 1330 | else |
| 1331 | origoutfname = stripslashes(wfname, 1); |
| 1332 | |
| 1333 | outfname = canonify(origoutfname); |
| 1334 | if (!outfname) { |
| 1335 | printf("%s: canonify: %s\n", origoutfname, fxp_error()); |
| 1336 | if (wcm) { |
| 1337 | sfree(wfname); |
| 1338 | finish_wildcard_matching(wcm); |
| 1339 | } |
| 1340 | return 0; |
| 1341 | } |
| 1342 | ret = sftp_put_file(wfname, outfname, recurse, restart); |
| 1343 | sfree(outfname); |
| 1344 | |
| 1345 | if (wcm) { |
| 1346 | sfree(wfname); |
| 1347 | wfname = wildcard_get_filename(wcm); |
| 1348 | } else { |
| 1349 | wfname = NULL; |
| 1350 | } |
| 1351 | } |
| 1352 | |
| 1353 | if (wcm) |
| 1354 | finish_wildcard_matching(wcm); |
| 1355 | |
| 1356 | if (!ret) |
| 1357 | return ret; |
| 1358 | |
| 1359 | } while (multiple && i < cmd->nwords); |
| 1360 | |
| 1361 | return ret; |
| 1362 | } |
| 1363 | int sftp_cmd_put(struct sftp_command *cmd) |
| 1364 | { |
| 1365 | return sftp_general_put(cmd, 0, 0); |
| 1366 | } |
| 1367 | int sftp_cmd_mput(struct sftp_command *cmd) |
| 1368 | { |
| 1369 | return sftp_general_put(cmd, 0, 1); |
| 1370 | } |
| 1371 | int sftp_cmd_reput(struct sftp_command *cmd) |
| 1372 | { |
| 1373 | return sftp_general_put(cmd, 1, 0); |
| 1374 | } |
| 1375 | |
| 1376 | int sftp_cmd_mkdir(struct sftp_command *cmd) |
| 1377 | { |
| 1378 | char *dir; |
| 1379 | struct sftp_packet *pktin; |
| 1380 | struct sftp_request *req, *rreq; |
| 1381 | int result; |
| 1382 | int i, ret; |
| 1383 | |
| 1384 | if (back == NULL) { |
| 1385 | not_connected(); |
| 1386 | return 0; |
| 1387 | } |
| 1388 | |
| 1389 | if (cmd->nwords < 2) { |
| 1390 | printf("mkdir: expects a directory\n"); |
| 1391 | return 0; |
| 1392 | } |
| 1393 | |
| 1394 | ret = 1; |
| 1395 | for (i = 1; i < cmd->nwords; i++) { |
| 1396 | dir = canonify(cmd->words[i]); |
| 1397 | if (!dir) { |
| 1398 | printf("%s: canonify: %s\n", dir, fxp_error()); |
| 1399 | return 0; |
| 1400 | } |
| 1401 | |
| 1402 | sftp_register(req = fxp_mkdir_send(dir)); |
| 1403 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1404 | assert(rreq == req); |
| 1405 | result = fxp_mkdir_recv(pktin, rreq); |
| 1406 | |
| 1407 | if (!result) { |
| 1408 | printf("mkdir %s: %s\n", dir, fxp_error()); |
| 1409 | ret = 0; |
| 1410 | } else |
| 1411 | printf("mkdir %s: OK\n", dir); |
| 1412 | |
| 1413 | sfree(dir); |
| 1414 | } |
| 1415 | |
| 1416 | return ret; |
| 1417 | } |
| 1418 | |
| 1419 | static int sftp_action_rmdir(void *vctx, char *dir) |
| 1420 | { |
| 1421 | struct sftp_packet *pktin; |
| 1422 | struct sftp_request *req, *rreq; |
| 1423 | int result; |
| 1424 | |
| 1425 | sftp_register(req = fxp_rmdir_send(dir)); |
| 1426 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1427 | assert(rreq == req); |
| 1428 | result = fxp_rmdir_recv(pktin, rreq); |
| 1429 | |
| 1430 | if (!result) { |
| 1431 | printf("rmdir %s: %s\n", dir, fxp_error()); |
| 1432 | return 0; |
| 1433 | } |
| 1434 | |
| 1435 | printf("rmdir %s: OK\n", dir); |
| 1436 | |
| 1437 | return 1; |
| 1438 | } |
| 1439 | |
| 1440 | int sftp_cmd_rmdir(struct sftp_command *cmd) |
| 1441 | { |
| 1442 | int i, ret; |
| 1443 | |
| 1444 | if (back == NULL) { |
| 1445 | not_connected(); |
| 1446 | return 0; |
| 1447 | } |
| 1448 | |
| 1449 | if (cmd->nwords < 2) { |
| 1450 | printf("rmdir: expects a directory\n"); |
| 1451 | return 0; |
| 1452 | } |
| 1453 | |
| 1454 | ret = 1; |
| 1455 | for (i = 1; i < cmd->nwords; i++) |
| 1456 | ret &= wildcard_iterate(cmd->words[i], sftp_action_rmdir, NULL); |
| 1457 | |
| 1458 | return ret; |
| 1459 | } |
| 1460 | |
| 1461 | static int sftp_action_rm(void *vctx, char *fname) |
| 1462 | { |
| 1463 | struct sftp_packet *pktin; |
| 1464 | struct sftp_request *req, *rreq; |
| 1465 | int result; |
| 1466 | |
| 1467 | sftp_register(req = fxp_remove_send(fname)); |
| 1468 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1469 | assert(rreq == req); |
| 1470 | result = fxp_remove_recv(pktin, rreq); |
| 1471 | |
| 1472 | if (!result) { |
| 1473 | printf("rm %s: %s\n", fname, fxp_error()); |
| 1474 | return 0; |
| 1475 | } |
| 1476 | |
| 1477 | printf("rm %s: OK\n", fname); |
| 1478 | |
| 1479 | return 1; |
| 1480 | } |
| 1481 | |
| 1482 | int sftp_cmd_rm(struct sftp_command *cmd) |
| 1483 | { |
| 1484 | int i, ret; |
| 1485 | |
| 1486 | if (back == NULL) { |
| 1487 | not_connected(); |
| 1488 | return 0; |
| 1489 | } |
| 1490 | |
| 1491 | if (cmd->nwords < 2) { |
| 1492 | printf("rm: expects a filename\n"); |
| 1493 | return 0; |
| 1494 | } |
| 1495 | |
| 1496 | ret = 1; |
| 1497 | for (i = 1; i < cmd->nwords; i++) |
| 1498 | ret &= wildcard_iterate(cmd->words[i], sftp_action_rm, NULL); |
| 1499 | |
| 1500 | return ret; |
| 1501 | } |
| 1502 | |
| 1503 | static int check_is_dir(char *dstfname) |
| 1504 | { |
| 1505 | struct sftp_packet *pktin; |
| 1506 | struct sftp_request *req, *rreq; |
| 1507 | struct fxp_attrs attrs; |
| 1508 | int result; |
| 1509 | |
| 1510 | sftp_register(req = fxp_stat_send(dstfname)); |
| 1511 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1512 | assert(rreq == req); |
| 1513 | result = fxp_stat_recv(pktin, rreq, &attrs); |
| 1514 | |
| 1515 | if (result && |
| 1516 | (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) && |
| 1517 | (attrs.permissions & 0040000)) |
| 1518 | return TRUE; |
| 1519 | else |
| 1520 | return FALSE; |
| 1521 | } |
| 1522 | |
| 1523 | struct sftp_context_mv { |
| 1524 | char *dstfname; |
| 1525 | int dest_is_dir; |
| 1526 | }; |
| 1527 | |
| 1528 | static int sftp_action_mv(void *vctx, char *srcfname) |
| 1529 | { |
| 1530 | struct sftp_context_mv *ctx = (struct sftp_context_mv *)vctx; |
| 1531 | struct sftp_packet *pktin; |
| 1532 | struct sftp_request *req, *rreq; |
| 1533 | const char *error; |
| 1534 | char *finalfname, *newcanon = NULL; |
| 1535 | int ret, result; |
| 1536 | |
| 1537 | if (ctx->dest_is_dir) { |
| 1538 | char *p; |
| 1539 | char *newname; |
| 1540 | |
| 1541 | p = srcfname + strlen(srcfname); |
| 1542 | while (p > srcfname && p[-1] != '/') p--; |
| 1543 | newname = dupcat(ctx->dstfname, "/", p, NULL); |
| 1544 | newcanon = canonify(newname); |
| 1545 | if (!newcanon) { |
| 1546 | printf("%s: canonify: %s\n", newname, fxp_error()); |
| 1547 | sfree(newname); |
| 1548 | return 0; |
| 1549 | } |
| 1550 | sfree(newname); |
| 1551 | |
| 1552 | finalfname = newcanon; |
| 1553 | } else { |
| 1554 | finalfname = ctx->dstfname; |
| 1555 | } |
| 1556 | |
| 1557 | sftp_register(req = fxp_rename_send(srcfname, finalfname)); |
| 1558 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1559 | assert(rreq == req); |
| 1560 | result = fxp_rename_recv(pktin, rreq); |
| 1561 | |
| 1562 | error = result ? NULL : fxp_error(); |
| 1563 | |
| 1564 | if (error) { |
| 1565 | printf("mv %s %s: %s\n", srcfname, finalfname, error); |
| 1566 | ret = 0; |
| 1567 | } else { |
| 1568 | printf("%s -> %s\n", srcfname, finalfname); |
| 1569 | ret = 1; |
| 1570 | } |
| 1571 | |
| 1572 | sfree(newcanon); |
| 1573 | return ret; |
| 1574 | } |
| 1575 | |
| 1576 | int sftp_cmd_mv(struct sftp_command *cmd) |
| 1577 | { |
| 1578 | struct sftp_context_mv actx, *ctx = &actx; |
| 1579 | int i, ret; |
| 1580 | |
| 1581 | if (back == NULL) { |
| 1582 | not_connected(); |
| 1583 | return 0; |
| 1584 | } |
| 1585 | |
| 1586 | if (cmd->nwords < 3) { |
| 1587 | printf("mv: expects two filenames\n"); |
| 1588 | return 0; |
| 1589 | } |
| 1590 | |
| 1591 | ctx->dstfname = canonify(cmd->words[cmd->nwords-1]); |
| 1592 | if (!ctx->dstfname) { |
| 1593 | printf("%s: canonify: %s\n", ctx->dstfname, fxp_error()); |
| 1594 | return 0; |
| 1595 | } |
| 1596 | |
| 1597 | /* |
| 1598 | * If there's more than one source argument, or one source |
| 1599 | * argument which is a wildcard, we _require_ that the |
| 1600 | * destination is a directory. |
| 1601 | */ |
| 1602 | ctx->dest_is_dir = check_is_dir(ctx->dstfname); |
| 1603 | if ((cmd->nwords > 3 || is_wildcard(cmd->words[1])) && !ctx->dest_is_dir) { |
| 1604 | printf("mv: multiple or wildcard arguments require the destination" |
| 1605 | " to be a directory\n"); |
| 1606 | sfree(ctx->dstfname); |
| 1607 | return 0; |
| 1608 | } |
| 1609 | |
| 1610 | /* |
| 1611 | * Now iterate over the source arguments. |
| 1612 | */ |
| 1613 | ret = 1; |
| 1614 | for (i = 1; i < cmd->nwords-1; i++) |
| 1615 | ret &= wildcard_iterate(cmd->words[i], sftp_action_mv, ctx); |
| 1616 | |
| 1617 | sfree(ctx->dstfname); |
| 1618 | return ret; |
| 1619 | } |
| 1620 | |
| 1621 | struct sftp_context_chmod { |
| 1622 | unsigned attrs_clr, attrs_xor; |
| 1623 | }; |
| 1624 | |
| 1625 | static int sftp_action_chmod(void *vctx, char *fname) |
| 1626 | { |
| 1627 | struct fxp_attrs attrs; |
| 1628 | struct sftp_packet *pktin; |
| 1629 | struct sftp_request *req, *rreq; |
| 1630 | int result; |
| 1631 | unsigned oldperms, newperms; |
| 1632 | struct sftp_context_chmod *ctx = (struct sftp_context_chmod *)vctx; |
| 1633 | |
| 1634 | sftp_register(req = fxp_stat_send(fname)); |
| 1635 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1636 | assert(rreq == req); |
| 1637 | result = fxp_stat_recv(pktin, rreq, &attrs); |
| 1638 | |
| 1639 | if (!result || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) { |
| 1640 | printf("get attrs for %s: %s\n", fname, |
| 1641 | result ? "file permissions not provided" : fxp_error()); |
| 1642 | return 0; |
| 1643 | } |
| 1644 | |
| 1645 | attrs.flags = SSH_FILEXFER_ATTR_PERMISSIONS; /* perms _only_ */ |
| 1646 | oldperms = attrs.permissions & 07777; |
| 1647 | attrs.permissions &= ~ctx->attrs_clr; |
| 1648 | attrs.permissions ^= ctx->attrs_xor; |
| 1649 | newperms = attrs.permissions & 07777; |
| 1650 | |
| 1651 | if (oldperms == newperms) |
| 1652 | return 1; /* no need to do anything! */ |
| 1653 | |
| 1654 | sftp_register(req = fxp_setstat_send(fname, attrs)); |
| 1655 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 1656 | assert(rreq == req); |
| 1657 | result = fxp_setstat_recv(pktin, rreq); |
| 1658 | |
| 1659 | if (!result) { |
| 1660 | printf("set attrs for %s: %s\n", fname, fxp_error()); |
| 1661 | return 0; |
| 1662 | } |
| 1663 | |
| 1664 | printf("%s: %04o -> %04o\n", fname, oldperms, newperms); |
| 1665 | |
| 1666 | return 1; |
| 1667 | } |
| 1668 | |
| 1669 | int sftp_cmd_chmod(struct sftp_command *cmd) |
| 1670 | { |
| 1671 | char *mode; |
| 1672 | int i, ret; |
| 1673 | struct sftp_context_chmod actx, *ctx = &actx; |
| 1674 | |
| 1675 | if (back == NULL) { |
| 1676 | not_connected(); |
| 1677 | return 0; |
| 1678 | } |
| 1679 | |
| 1680 | if (cmd->nwords < 3) { |
| 1681 | printf("chmod: expects a mode specifier and a filename\n"); |
| 1682 | return 0; |
| 1683 | } |
| 1684 | |
| 1685 | /* |
| 1686 | * Attempt to parse the mode specifier in cmd->words[1]. We |
| 1687 | * don't support the full horror of Unix chmod; instead we |
| 1688 | * support a much simpler syntax in which the user can either |
| 1689 | * specify an octal number, or a comma-separated sequence of |
| 1690 | * [ugoa]*[-+=][rwxst]+. (The initial [ugoa] sequence may |
| 1691 | * _only_ be omitted if the only attribute mentioned is t, |
| 1692 | * since all others require a user/group/other specification. |
| 1693 | * Additionally, the s attribute may not be specified for any |
| 1694 | * [ugoa] specifications other than exactly u or exactly g. |
| 1695 | */ |
| 1696 | ctx->attrs_clr = ctx->attrs_xor = 0; |
| 1697 | mode = cmd->words[1]; |
| 1698 | if (mode[0] >= '0' && mode[0] <= '9') { |
| 1699 | if (mode[strspn(mode, "01234567")]) { |
| 1700 | printf("chmod: numeric file modes should" |
| 1701 | " contain digits 0-7 only\n"); |
| 1702 | return 0; |
| 1703 | } |
| 1704 | ctx->attrs_clr = 07777; |
| 1705 | sscanf(mode, "%o", &ctx->attrs_xor); |
| 1706 | ctx->attrs_xor &= ctx->attrs_clr; |
| 1707 | } else { |
| 1708 | while (*mode) { |
| 1709 | char *modebegin = mode; |
| 1710 | unsigned subset, perms; |
| 1711 | int action; |
| 1712 | |
| 1713 | subset = 0; |
| 1714 | while (*mode && *mode != ',' && |
| 1715 | *mode != '+' && *mode != '-' && *mode != '=') { |
| 1716 | switch (*mode) { |
| 1717 | case 'u': subset |= 04700; break; /* setuid, user perms */ |
| 1718 | case 'g': subset |= 02070; break; /* setgid, group perms */ |
| 1719 | case 'o': subset |= 00007; break; /* just other perms */ |
| 1720 | case 'a': subset |= 06777; break; /* all of the above */ |
| 1721 | default: |
| 1722 | printf("chmod: file mode '%.*s' contains unrecognised" |
| 1723 | " user/group/other specifier '%c'\n", |
| 1724 | (int)strcspn(modebegin, ","), modebegin, *mode); |
| 1725 | return 0; |
| 1726 | } |
| 1727 | mode++; |
| 1728 | } |
| 1729 | if (!*mode || *mode == ',') { |
| 1730 | printf("chmod: file mode '%.*s' is incomplete\n", |
| 1731 | (int)strcspn(modebegin, ","), modebegin); |
| 1732 | return 0; |
| 1733 | } |
| 1734 | action = *mode++; |
| 1735 | if (!*mode || *mode == ',') { |
| 1736 | printf("chmod: file mode '%.*s' is incomplete\n", |
| 1737 | (int)strcspn(modebegin, ","), modebegin); |
| 1738 | return 0; |
| 1739 | } |
| 1740 | perms = 0; |
| 1741 | while (*mode && *mode != ',') { |
| 1742 | switch (*mode) { |
| 1743 | case 'r': perms |= 00444; break; |
| 1744 | case 'w': perms |= 00222; break; |
| 1745 | case 'x': perms |= 00111; break; |
| 1746 | case 't': perms |= 01000; subset |= 01000; break; |
| 1747 | case 's': |
| 1748 | if ((subset & 06777) != 04700 && |
| 1749 | (subset & 06777) != 02070) { |
| 1750 | printf("chmod: file mode '%.*s': set[ug]id bit should" |
| 1751 | " be used with exactly one of u or g only\n", |
| 1752 | (int)strcspn(modebegin, ","), modebegin); |
| 1753 | return 0; |
| 1754 | } |
| 1755 | perms |= 06000; |
| 1756 | break; |
| 1757 | default: |
| 1758 | printf("chmod: file mode '%.*s' contains unrecognised" |
| 1759 | " permission specifier '%c'\n", |
| 1760 | (int)strcspn(modebegin, ","), modebegin, *mode); |
| 1761 | return 0; |
| 1762 | } |
| 1763 | mode++; |
| 1764 | } |
| 1765 | if (!(subset & 06777) && (perms &~ subset)) { |
| 1766 | printf("chmod: file mode '%.*s' contains no user/group/other" |
| 1767 | " specifier and permissions other than 't' \n", |
| 1768 | (int)strcspn(modebegin, ","), modebegin); |
| 1769 | return 0; |
| 1770 | } |
| 1771 | perms &= subset; |
| 1772 | switch (action) { |
| 1773 | case '+': |
| 1774 | ctx->attrs_clr |= perms; |
| 1775 | ctx->attrs_xor |= perms; |
| 1776 | break; |
| 1777 | case '-': |
| 1778 | ctx->attrs_clr |= perms; |
| 1779 | ctx->attrs_xor &= ~perms; |
| 1780 | break; |
| 1781 | case '=': |
| 1782 | ctx->attrs_clr |= subset; |
| 1783 | ctx->attrs_xor |= perms; |
| 1784 | break; |
| 1785 | } |
| 1786 | if (*mode) mode++; /* eat comma */ |
| 1787 | } |
| 1788 | } |
| 1789 | |
| 1790 | ret = 1; |
| 1791 | for (i = 2; i < cmd->nwords; i++) |
| 1792 | ret &= wildcard_iterate(cmd->words[i], sftp_action_chmod, ctx); |
| 1793 | |
| 1794 | return ret; |
| 1795 | } |
| 1796 | |
| 1797 | static int sftp_cmd_open(struct sftp_command *cmd) |
| 1798 | { |
| 1799 | int portnumber; |
| 1800 | |
| 1801 | if (back != NULL) { |
| 1802 | printf("psftp: already connected\n"); |
| 1803 | return 0; |
| 1804 | } |
| 1805 | |
| 1806 | if (cmd->nwords < 2) { |
| 1807 | printf("open: expects a host name\n"); |
| 1808 | return 0; |
| 1809 | } |
| 1810 | |
| 1811 | if (cmd->nwords > 2) { |
| 1812 | portnumber = atoi(cmd->words[2]); |
| 1813 | if (portnumber == 0) { |
| 1814 | printf("open: invalid port number\n"); |
| 1815 | return 0; |
| 1816 | } |
| 1817 | } else |
| 1818 | portnumber = 0; |
| 1819 | |
| 1820 | if (psftp_connect(cmd->words[1], NULL, portnumber)) { |
| 1821 | back = NULL; /* connection is already closed */ |
| 1822 | return -1; /* this is fatal */ |
| 1823 | } |
| 1824 | do_sftp_init(); |
| 1825 | return 1; |
| 1826 | } |
| 1827 | |
| 1828 | static int sftp_cmd_lcd(struct sftp_command *cmd) |
| 1829 | { |
| 1830 | char *currdir, *errmsg; |
| 1831 | |
| 1832 | if (cmd->nwords < 2) { |
| 1833 | printf("lcd: expects a local directory name\n"); |
| 1834 | return 0; |
| 1835 | } |
| 1836 | |
| 1837 | errmsg = psftp_lcd(cmd->words[1]); |
| 1838 | if (errmsg) { |
| 1839 | printf("lcd: unable to change directory: %s\n", errmsg); |
| 1840 | sfree(errmsg); |
| 1841 | return 0; |
| 1842 | } |
| 1843 | |
| 1844 | currdir = psftp_getcwd(); |
| 1845 | printf("New local directory is %s\n", currdir); |
| 1846 | sfree(currdir); |
| 1847 | |
| 1848 | return 1; |
| 1849 | } |
| 1850 | |
| 1851 | static int sftp_cmd_lpwd(struct sftp_command *cmd) |
| 1852 | { |
| 1853 | char *currdir; |
| 1854 | |
| 1855 | currdir = psftp_getcwd(); |
| 1856 | printf("Current local directory is %s\n", currdir); |
| 1857 | sfree(currdir); |
| 1858 | |
| 1859 | return 1; |
| 1860 | } |
| 1861 | |
| 1862 | static int sftp_cmd_pling(struct sftp_command *cmd) |
| 1863 | { |
| 1864 | int exitcode; |
| 1865 | |
| 1866 | exitcode = system(cmd->words[1]); |
| 1867 | return (exitcode == 0); |
| 1868 | } |
| 1869 | |
| 1870 | static int sftp_cmd_help(struct sftp_command *cmd); |
| 1871 | |
| 1872 | static struct sftp_cmd_lookup { |
| 1873 | char *name; |
| 1874 | /* |
| 1875 | * For help purposes, there are two kinds of command: |
| 1876 | * |
| 1877 | * - primary commands, in which `longhelp' is non-NULL. In |
| 1878 | * this case `shorthelp' is descriptive text, and `longhelp' |
| 1879 | * is longer descriptive text intended to be printed after |
| 1880 | * the command name. |
| 1881 | * |
| 1882 | * - alias commands, in which `longhelp' is NULL. In this case |
| 1883 | * `shorthelp' is the name of a primary command, which |
| 1884 | * contains the help that should double up for this command. |
| 1885 | */ |
| 1886 | int listed; /* do we list this in primary help? */ |
| 1887 | char *shorthelp; |
| 1888 | char *longhelp; |
| 1889 | int (*obey) (struct sftp_command *); |
| 1890 | } sftp_lookup[] = { |
| 1891 | /* |
| 1892 | * List of sftp commands. This is binary-searched so it MUST be |
| 1893 | * in ASCII order. |
| 1894 | */ |
| 1895 | { |
| 1896 | "!", TRUE, "run a local command", |
| 1897 | "<command>\n" |
| 1898 | /* FIXME: this example is crap for non-Windows. */ |
| 1899 | " Runs a local command. For example, \"!del myfile\".\n", |
| 1900 | sftp_cmd_pling |
| 1901 | }, |
| 1902 | { |
| 1903 | "bye", TRUE, "finish your SFTP session", |
| 1904 | "\n" |
| 1905 | " Terminates your SFTP session and quits the PSFTP program.\n", |
| 1906 | sftp_cmd_quit |
| 1907 | }, |
| 1908 | { |
| 1909 | "cd", TRUE, "change your remote working directory", |
| 1910 | " [ <new working directory> ]\n" |
| 1911 | " Change the remote working directory for your SFTP session.\n" |
| 1912 | " If a new working directory is not supplied, you will be\n" |
| 1913 | " returned to your home directory.\n", |
| 1914 | sftp_cmd_cd |
| 1915 | }, |
| 1916 | { |
| 1917 | "chmod", TRUE, "change file permissions and modes", |
| 1918 | " <modes> <filename-or-wildcard> [ <filename-or-wildcard>... ]\n" |
| 1919 | " Change the file permissions on one or more remote files or\n" |
| 1920 | " directories.\n" |
| 1921 | " <modes> can be any octal Unix permission specifier.\n" |
| 1922 | " Alternatively, <modes> can include the following modifiers:\n" |
| 1923 | " u+r make file readable by owning user\n" |
| 1924 | " u+w make file writable by owning user\n" |
| 1925 | " u+x make file executable by owning user\n" |
| 1926 | " u-r make file not readable by owning user\n" |
| 1927 | " [also u-w, u-x]\n" |
| 1928 | " g+r make file readable by members of owning group\n" |
| 1929 | " [also g+w, g+x, g-r, g-w, g-x]\n" |
| 1930 | " o+r make file readable by all other users\n" |
| 1931 | " [also o+w, o+x, o-r, o-w, o-x]\n" |
| 1932 | " a+r make file readable by absolutely everybody\n" |
| 1933 | " [also a+w, a+x, a-r, a-w, a-x]\n" |
| 1934 | " u+s enable the Unix set-user-ID bit\n" |
| 1935 | " u-s disable the Unix set-user-ID bit\n" |
| 1936 | " g+s enable the Unix set-group-ID bit\n" |
| 1937 | " g-s disable the Unix set-group-ID bit\n" |
| 1938 | " +t enable the Unix \"sticky bit\"\n" |
| 1939 | " You can give more than one modifier for the same user (\"g-rwx\"), and\n" |
| 1940 | " more than one user for the same modifier (\"ug+w\"). You can\n" |
| 1941 | " use commas to separate different modifiers (\"u+rwx,g+s\").\n", |
| 1942 | sftp_cmd_chmod |
| 1943 | }, |
| 1944 | { |
| 1945 | "close", TRUE, "finish your SFTP session but do not quit PSFTP", |
| 1946 | "\n" |
| 1947 | " Terminates your SFTP session, but does not quit the PSFTP\n" |
| 1948 | " program. You can then use \"open\" to start another SFTP\n" |
| 1949 | " session, to the same server or to a different one.\n", |
| 1950 | sftp_cmd_close |
| 1951 | }, |
| 1952 | { |
| 1953 | "del", TRUE, "delete files on the remote server", |
| 1954 | " <filename-or-wildcard> [ <filename-or-wildcard>... ]\n" |
| 1955 | " Delete a file or files from the server.\n", |
| 1956 | sftp_cmd_rm |
| 1957 | }, |
| 1958 | { |
| 1959 | "delete", FALSE, "del", NULL, sftp_cmd_rm |
| 1960 | }, |
| 1961 | { |
| 1962 | "dir", TRUE, "list remote files", |
| 1963 | " [ <directory-name> ]/[ <wildcard> ]\n" |
| 1964 | " List the contents of a specified directory on the server.\n" |
| 1965 | " If <directory-name> is not given, the current working directory\n" |
| 1966 | " is assumed.\n" |
| 1967 | " If <wildcard> is given, it is treated as a set of files to\n" |
| 1968 | " list; otherwise, all files are listed.\n", |
| 1969 | sftp_cmd_ls |
| 1970 | }, |
| 1971 | { |
| 1972 | "exit", TRUE, "bye", NULL, sftp_cmd_quit |
| 1973 | }, |
| 1974 | { |
| 1975 | "get", TRUE, "download a file from the server to your local machine", |
| 1976 | " [ -r ] [ -- ] <filename> [ <local-filename> ]\n" |
| 1977 | " Downloads a file on the server and stores it locally under\n" |
| 1978 | " the same name, or under a different one if you supply the\n" |
| 1979 | " argument <local-filename>.\n" |
| 1980 | " If -r specified, recursively fetch a directory.\n", |
| 1981 | sftp_cmd_get |
| 1982 | }, |
| 1983 | { |
| 1984 | "help", TRUE, "give help", |
| 1985 | " [ <command> [ <command> ... ] ]\n" |
| 1986 | " Give general help if no commands are specified.\n" |
| 1987 | " If one or more commands are specified, give specific help on\n" |
| 1988 | " those particular commands.\n", |
| 1989 | sftp_cmd_help |
| 1990 | }, |
| 1991 | { |
| 1992 | "lcd", TRUE, "change local working directory", |
| 1993 | " <local-directory-name>\n" |
| 1994 | " Change the local working directory of the PSFTP program (the\n" |
| 1995 | " default location where the \"get\" command will save files).\n", |
| 1996 | sftp_cmd_lcd |
| 1997 | }, |
| 1998 | { |
| 1999 | "lpwd", TRUE, "print local working directory", |
| 2000 | "\n" |
| 2001 | " Print the local working directory of the PSFTP program (the\n" |
| 2002 | " default location where the \"get\" command will save files).\n", |
| 2003 | sftp_cmd_lpwd |
| 2004 | }, |
| 2005 | { |
| 2006 | "ls", TRUE, "dir", NULL, |
| 2007 | sftp_cmd_ls |
| 2008 | }, |
| 2009 | { |
| 2010 | "mget", TRUE, "download multiple files at once", |
| 2011 | " [ -r ] [ -- ] <filename-or-wildcard> [ <filename-or-wildcard>... ]\n" |
| 2012 | " Downloads many files from the server, storing each one under\n" |
| 2013 | " the same name it has on the server side. You can use wildcards\n" |
| 2014 | " such as \"*.c\" to specify lots of files at once.\n" |
| 2015 | " If -r specified, recursively fetch files and directories.\n", |
| 2016 | sftp_cmd_mget |
| 2017 | }, |
| 2018 | { |
| 2019 | "mkdir", TRUE, "create directories on the remote server", |
| 2020 | " <directory-name> [ <directory-name>... ]\n" |
| 2021 | " Creates directories with the given names on the server.\n", |
| 2022 | sftp_cmd_mkdir |
| 2023 | }, |
| 2024 | { |
| 2025 | "mput", TRUE, "upload multiple files at once", |
| 2026 | " [ -r ] [ -- ] <filename-or-wildcard> [ <filename-or-wildcard>... ]\n" |
| 2027 | " Uploads many files to the server, storing each one under the\n" |
| 2028 | " same name it has on the client side. You can use wildcards\n" |
| 2029 | " such as \"*.c\" to specify lots of files at once.\n" |
| 2030 | " If -r specified, recursively store files and directories.\n", |
| 2031 | sftp_cmd_mput |
| 2032 | }, |
| 2033 | { |
| 2034 | "mv", TRUE, "move or rename file(s) on the remote server", |
| 2035 | " <source> [ <source>... ] <destination>\n" |
| 2036 | " Moves or renames <source>(s) on the server to <destination>,\n" |
| 2037 | " also on the server.\n" |
| 2038 | " If <destination> specifies an existing directory, then <source>\n" |
| 2039 | " may be a wildcard, and multiple <source>s may be given; all\n" |
| 2040 | " source files are moved into <destination>.\n" |
| 2041 | " Otherwise, <source> must specify a single file, which is moved\n" |
| 2042 | " or renamed so that it is accessible under the name <destination>.\n", |
| 2043 | sftp_cmd_mv |
| 2044 | }, |
| 2045 | { |
| 2046 | "open", TRUE, "connect to a host", |
| 2047 | " [<user>@]<hostname> [<port>]\n" |
| 2048 | " Establishes an SFTP connection to a given host. Only usable\n" |
| 2049 | " when you are not already connected to a server.\n", |
| 2050 | sftp_cmd_open |
| 2051 | }, |
| 2052 | { |
| 2053 | "put", TRUE, "upload a file from your local machine to the server", |
| 2054 | " [ -r ] [ -- ] <filename> [ <remote-filename> ]\n" |
| 2055 | " Uploads a file to the server and stores it there under\n" |
| 2056 | " the same name, or under a different one if you supply the\n" |
| 2057 | " argument <remote-filename>.\n" |
| 2058 | " If -r specified, recursively store a directory.\n", |
| 2059 | sftp_cmd_put |
| 2060 | }, |
| 2061 | { |
| 2062 | "pwd", TRUE, "print your remote working directory", |
| 2063 | "\n" |
| 2064 | " Print the current remote working directory for your SFTP session.\n", |
| 2065 | sftp_cmd_pwd |
| 2066 | }, |
| 2067 | { |
| 2068 | "quit", TRUE, "bye", NULL, |
| 2069 | sftp_cmd_quit |
| 2070 | }, |
| 2071 | { |
| 2072 | "reget", TRUE, "continue downloading files", |
| 2073 | " [ -r ] [ -- ] <filename> [ <local-filename> ]\n" |
| 2074 | " Works exactly like the \"get\" command, but the local file\n" |
| 2075 | " must already exist. The download will begin at the end of the\n" |
| 2076 | " file. This is for resuming a download that was interrupted.\n" |
| 2077 | " If -r specified, resume interrupted \"get -r\".\n", |
| 2078 | sftp_cmd_reget |
| 2079 | }, |
| 2080 | { |
| 2081 | "ren", TRUE, "mv", NULL, |
| 2082 | sftp_cmd_mv |
| 2083 | }, |
| 2084 | { |
| 2085 | "rename", FALSE, "mv", NULL, |
| 2086 | sftp_cmd_mv |
| 2087 | }, |
| 2088 | { |
| 2089 | "reput", TRUE, "continue uploading files", |
| 2090 | " [ -r ] [ -- ] <filename> [ <remote-filename> ]\n" |
| 2091 | " Works exactly like the \"put\" command, but the remote file\n" |
| 2092 | " must already exist. The upload will begin at the end of the\n" |
| 2093 | " file. This is for resuming an upload that was interrupted.\n" |
| 2094 | " If -r specified, resume interrupted \"put -r\".\n", |
| 2095 | sftp_cmd_reput |
| 2096 | }, |
| 2097 | { |
| 2098 | "rm", TRUE, "del", NULL, |
| 2099 | sftp_cmd_rm |
| 2100 | }, |
| 2101 | { |
| 2102 | "rmdir", TRUE, "remove directories on the remote server", |
| 2103 | " <directory-name> [ <directory-name>... ]\n" |
| 2104 | " Removes the directory with the given name on the server.\n" |
| 2105 | " The directory will not be removed unless it is empty.\n" |
| 2106 | " Wildcards may be used to specify multiple directories.\n", |
| 2107 | sftp_cmd_rmdir |
| 2108 | } |
| 2109 | }; |
| 2110 | |
| 2111 | const struct sftp_cmd_lookup *lookup_command(char *name) |
| 2112 | { |
| 2113 | int i, j, k, cmp; |
| 2114 | |
| 2115 | i = -1; |
| 2116 | j = sizeof(sftp_lookup) / sizeof(*sftp_lookup); |
| 2117 | while (j - i > 1) { |
| 2118 | k = (j + i) / 2; |
| 2119 | cmp = strcmp(name, sftp_lookup[k].name); |
| 2120 | if (cmp < 0) |
| 2121 | j = k; |
| 2122 | else if (cmp > 0) |
| 2123 | i = k; |
| 2124 | else { |
| 2125 | return &sftp_lookup[k]; |
| 2126 | } |
| 2127 | } |
| 2128 | return NULL; |
| 2129 | } |
| 2130 | |
| 2131 | static int sftp_cmd_help(struct sftp_command *cmd) |
| 2132 | { |
| 2133 | int i; |
| 2134 | if (cmd->nwords == 1) { |
| 2135 | /* |
| 2136 | * Give short help on each command. |
| 2137 | */ |
| 2138 | int maxlen; |
| 2139 | maxlen = 0; |
| 2140 | for (i = 0; i < sizeof(sftp_lookup) / sizeof(*sftp_lookup); i++) { |
| 2141 | int len; |
| 2142 | if (!sftp_lookup[i].listed) |
| 2143 | continue; |
| 2144 | len = strlen(sftp_lookup[i].name); |
| 2145 | if (maxlen < len) |
| 2146 | maxlen = len; |
| 2147 | } |
| 2148 | for (i = 0; i < sizeof(sftp_lookup) / sizeof(*sftp_lookup); i++) { |
| 2149 | const struct sftp_cmd_lookup *lookup; |
| 2150 | if (!sftp_lookup[i].listed) |
| 2151 | continue; |
| 2152 | lookup = &sftp_lookup[i]; |
| 2153 | printf("%-*s", maxlen+2, lookup->name); |
| 2154 | if (lookup->longhelp == NULL) |
| 2155 | lookup = lookup_command(lookup->shorthelp); |
| 2156 | printf("%s\n", lookup->shorthelp); |
| 2157 | } |
| 2158 | } else { |
| 2159 | /* |
| 2160 | * Give long help on specific commands. |
| 2161 | */ |
| 2162 | for (i = 1; i < cmd->nwords; i++) { |
| 2163 | const struct sftp_cmd_lookup *lookup; |
| 2164 | lookup = lookup_command(cmd->words[i]); |
| 2165 | if (!lookup) { |
| 2166 | printf("help: %s: command not found\n", cmd->words[i]); |
| 2167 | } else { |
| 2168 | printf("%s", lookup->name); |
| 2169 | if (lookup->longhelp == NULL) |
| 2170 | lookup = lookup_command(lookup->shorthelp); |
| 2171 | printf("%s", lookup->longhelp); |
| 2172 | } |
| 2173 | } |
| 2174 | } |
| 2175 | return 1; |
| 2176 | } |
| 2177 | |
| 2178 | /* ---------------------------------------------------------------------- |
| 2179 | * Command line reading and parsing. |
| 2180 | */ |
| 2181 | struct sftp_command *sftp_getcmd(FILE *fp, int mode, int modeflags) |
| 2182 | { |
| 2183 | char *line; |
| 2184 | struct sftp_command *cmd; |
| 2185 | char *p, *q, *r; |
| 2186 | int quoting; |
| 2187 | |
| 2188 | cmd = snew(struct sftp_command); |
| 2189 | cmd->words = NULL; |
| 2190 | cmd->nwords = 0; |
| 2191 | cmd->wordssize = 0; |
| 2192 | |
| 2193 | line = NULL; |
| 2194 | |
| 2195 | if (fp) { |
| 2196 | if (modeflags & 1) |
| 2197 | printf("psftp> "); |
| 2198 | line = fgetline(fp); |
| 2199 | } else { |
| 2200 | line = ssh_sftp_get_cmdline("psftp> ", back == NULL); |
| 2201 | } |
| 2202 | |
| 2203 | if (!line || !*line) { |
| 2204 | cmd->obey = sftp_cmd_quit; |
| 2205 | if ((mode == 0) || (modeflags & 1)) |
| 2206 | printf("quit\n"); |
| 2207 | return cmd; /* eof */ |
| 2208 | } |
| 2209 | |
| 2210 | line[strcspn(line, "\r\n")] = '\0'; |
| 2211 | |
| 2212 | if (modeflags & 1) { |
| 2213 | printf("%s\n", line); |
| 2214 | } |
| 2215 | |
| 2216 | p = line; |
| 2217 | while (*p && (*p == ' ' || *p == '\t')) |
| 2218 | p++; |
| 2219 | |
| 2220 | if (*p == '!') { |
| 2221 | /* |
| 2222 | * Special case: the ! command. This is always parsed as |
| 2223 | * exactly two words: one containing the !, and the second |
| 2224 | * containing everything else on the line. |
| 2225 | */ |
| 2226 | cmd->nwords = cmd->wordssize = 2; |
| 2227 | cmd->words = sresize(cmd->words, cmd->wordssize, char *); |
| 2228 | cmd->words[0] = dupstr("!"); |
| 2229 | cmd->words[1] = dupstr(p+1); |
| 2230 | } else { |
| 2231 | |
| 2232 | /* |
| 2233 | * Parse the command line into words. The syntax is: |
| 2234 | * - double quotes are removed, but cause spaces within to be |
| 2235 | * treated as non-separating. |
| 2236 | * - a double-doublequote pair is a literal double quote, inside |
| 2237 | * _or_ outside quotes. Like this: |
| 2238 | * |
| 2239 | * firstword "second word" "this has ""quotes"" in" and""this"" |
| 2240 | * |
| 2241 | * becomes |
| 2242 | * |
| 2243 | * >firstword< |
| 2244 | * >second word< |
| 2245 | * >this has "quotes" in< |
| 2246 | * >and"this"< |
| 2247 | */ |
| 2248 | while (*p) { |
| 2249 | /* skip whitespace */ |
| 2250 | while (*p && (*p == ' ' || *p == '\t')) |
| 2251 | p++; |
| 2252 | /* mark start of word */ |
| 2253 | q = r = p; /* q sits at start, r writes word */ |
| 2254 | quoting = 0; |
| 2255 | while (*p) { |
| 2256 | if (!quoting && (*p == ' ' || *p == '\t')) |
| 2257 | break; /* reached end of word */ |
| 2258 | else if (*p == '"' && p[1] == '"') |
| 2259 | p += 2, *r++ = '"'; /* a literal quote */ |
| 2260 | else if (*p == '"') |
| 2261 | p++, quoting = !quoting; |
| 2262 | else |
| 2263 | *r++ = *p++; |
| 2264 | } |
| 2265 | if (*p) |
| 2266 | p++; /* skip over the whitespace */ |
| 2267 | *r = '\0'; |
| 2268 | if (cmd->nwords >= cmd->wordssize) { |
| 2269 | cmd->wordssize = cmd->nwords + 16; |
| 2270 | cmd->words = sresize(cmd->words, cmd->wordssize, char *); |
| 2271 | } |
| 2272 | cmd->words[cmd->nwords++] = dupstr(q); |
| 2273 | } |
| 2274 | } |
| 2275 | |
| 2276 | sfree(line); |
| 2277 | |
| 2278 | /* |
| 2279 | * Now parse the first word and assign a function. |
| 2280 | */ |
| 2281 | |
| 2282 | if (cmd->nwords == 0) |
| 2283 | cmd->obey = sftp_cmd_null; |
| 2284 | else { |
| 2285 | const struct sftp_cmd_lookup *lookup; |
| 2286 | lookup = lookup_command(cmd->words[0]); |
| 2287 | if (!lookup) |
| 2288 | cmd->obey = sftp_cmd_unknown; |
| 2289 | else |
| 2290 | cmd->obey = lookup->obey; |
| 2291 | } |
| 2292 | |
| 2293 | return cmd; |
| 2294 | } |
| 2295 | |
| 2296 | static int do_sftp_init(void) |
| 2297 | { |
| 2298 | struct sftp_packet *pktin; |
| 2299 | struct sftp_request *req, *rreq; |
| 2300 | |
| 2301 | /* |
| 2302 | * Do protocol initialisation. |
| 2303 | */ |
| 2304 | if (!fxp_init()) { |
| 2305 | fprintf(stderr, |
| 2306 | "Fatal: unable to initialise SFTP: %s\n", fxp_error()); |
| 2307 | return 1; /* failure */ |
| 2308 | } |
| 2309 | |
| 2310 | /* |
| 2311 | * Find out where our home directory is. |
| 2312 | */ |
| 2313 | sftp_register(req = fxp_realpath_send(".")); |
| 2314 | rreq = sftp_find_request(pktin = sftp_recv()); |
| 2315 | assert(rreq == req); |
| 2316 | homedir = fxp_realpath_recv(pktin, rreq); |
| 2317 | |
| 2318 | if (!homedir) { |
| 2319 | fprintf(stderr, |
| 2320 | "Warning: failed to resolve home directory: %s\n", |
| 2321 | fxp_error()); |
| 2322 | homedir = dupstr("."); |
| 2323 | } else { |
| 2324 | printf("Remote working directory is %s\n", homedir); |
| 2325 | } |
| 2326 | pwd = dupstr(homedir); |
| 2327 | return 0; |
| 2328 | } |
| 2329 | |
| 2330 | void do_sftp_cleanup() |
| 2331 | { |
| 2332 | char ch; |
| 2333 | if (back) { |
| 2334 | back->special(backhandle, TS_EOF); |
| 2335 | sftp_recvdata(&ch, 1); |
| 2336 | back->free(backhandle); |
| 2337 | sftp_cleanup_request(); |
| 2338 | back = NULL; |
| 2339 | backhandle = NULL; |
| 2340 | } |
| 2341 | if (pwd) { |
| 2342 | sfree(pwd); |
| 2343 | pwd = NULL; |
| 2344 | } |
| 2345 | if (homedir) { |
| 2346 | sfree(homedir); |
| 2347 | homedir = NULL; |
| 2348 | } |
| 2349 | } |
| 2350 | |
| 2351 | void do_sftp(int mode, int modeflags, char *batchfile) |
| 2352 | { |
| 2353 | FILE *fp; |
| 2354 | int ret; |
| 2355 | |
| 2356 | /* |
| 2357 | * Batch mode? |
| 2358 | */ |
| 2359 | if (mode == 0) { |
| 2360 | |
| 2361 | /* ------------------------------------------------------------------ |
| 2362 | * Now we're ready to do Real Stuff. |
| 2363 | */ |
| 2364 | while (1) { |
| 2365 | struct sftp_command *cmd; |
| 2366 | cmd = sftp_getcmd(NULL, 0, 0); |
| 2367 | if (!cmd) |
| 2368 | break; |
| 2369 | ret = cmd->obey(cmd); |
| 2370 | if (cmd->words) { |
| 2371 | int i; |
| 2372 | for(i = 0; i < cmd->nwords; i++) |
| 2373 | sfree(cmd->words[i]); |
| 2374 | sfree(cmd->words); |
| 2375 | } |
| 2376 | sfree(cmd); |
| 2377 | if (ret < 0) |
| 2378 | break; |
| 2379 | } |
| 2380 | } else { |
| 2381 | fp = fopen(batchfile, "r"); |
| 2382 | if (!fp) { |
| 2383 | printf("Fatal: unable to open %s\n", batchfile); |
| 2384 | return; |
| 2385 | } |
| 2386 | while (1) { |
| 2387 | struct sftp_command *cmd; |
| 2388 | cmd = sftp_getcmd(fp, mode, modeflags); |
| 2389 | if (!cmd) |
| 2390 | break; |
| 2391 | ret = cmd->obey(cmd); |
| 2392 | if (ret < 0) |
| 2393 | break; |
| 2394 | if (ret == 0) { |
| 2395 | if (!(modeflags & 2)) |
| 2396 | break; |
| 2397 | } |
| 2398 | } |
| 2399 | fclose(fp); |
| 2400 | |
| 2401 | } |
| 2402 | } |
| 2403 | |
| 2404 | /* ---------------------------------------------------------------------- |
| 2405 | * Dirty bits: integration with PuTTY. |
| 2406 | */ |
| 2407 | |
| 2408 | static int verbose = 0; |
| 2409 | |
| 2410 | /* |
| 2411 | * Print an error message and perform a fatal exit. |
| 2412 | */ |
| 2413 | void fatalbox(char *fmt, ...) |
| 2414 | { |
| 2415 | char *str, *str2; |
| 2416 | va_list ap; |
| 2417 | va_start(ap, fmt); |
| 2418 | str = dupvprintf(fmt, ap); |
| 2419 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
| 2420 | sfree(str); |
| 2421 | va_end(ap); |
| 2422 | fputs(str2, stderr); |
| 2423 | sfree(str2); |
| 2424 | |
| 2425 | cleanup_exit(1); |
| 2426 | } |
| 2427 | void modalfatalbox(char *fmt, ...) |
| 2428 | { |
| 2429 | char *str, *str2; |
| 2430 | va_list ap; |
| 2431 | va_start(ap, fmt); |
| 2432 | str = dupvprintf(fmt, ap); |
| 2433 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
| 2434 | sfree(str); |
| 2435 | va_end(ap); |
| 2436 | fputs(str2, stderr); |
| 2437 | sfree(str2); |
| 2438 | |
| 2439 | cleanup_exit(1); |
| 2440 | } |
| 2441 | void connection_fatal(void *frontend, char *fmt, ...) |
| 2442 | { |
| 2443 | char *str, *str2; |
| 2444 | va_list ap; |
| 2445 | va_start(ap, fmt); |
| 2446 | str = dupvprintf(fmt, ap); |
| 2447 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
| 2448 | sfree(str); |
| 2449 | va_end(ap); |
| 2450 | fputs(str2, stderr); |
| 2451 | sfree(str2); |
| 2452 | |
| 2453 | cleanup_exit(1); |
| 2454 | } |
| 2455 | |
| 2456 | void ldisc_send(void *handle, char *buf, int len, int interactive) |
| 2457 | { |
| 2458 | /* |
| 2459 | * This is only here because of the calls to ldisc_send(NULL, |
| 2460 | * 0) in ssh.c. Nothing in PSFTP actually needs to use the |
| 2461 | * ldisc as an ldisc. So if we get called with any real data, I |
| 2462 | * want to know about it. |
| 2463 | */ |
| 2464 | assert(len == 0); |
| 2465 | } |
| 2466 | |
| 2467 | /* |
| 2468 | * In psftp, all agent requests should be synchronous, so this is a |
| 2469 | * never-called stub. |
| 2470 | */ |
| 2471 | void agent_schedule_callback(void (*callback)(void *, void *, int), |
| 2472 | void *callback_ctx, void *data, int len) |
| 2473 | { |
| 2474 | assert(!"We shouldn't be here"); |
| 2475 | } |
| 2476 | |
| 2477 | /* |
| 2478 | * Receive a block of data from the SSH link. Block until all data |
| 2479 | * is available. |
| 2480 | * |
| 2481 | * To do this, we repeatedly call the SSH protocol module, with our |
| 2482 | * own trap in from_backend() to catch the data that comes back. We |
| 2483 | * do this until we have enough data. |
| 2484 | */ |
| 2485 | |
| 2486 | static unsigned char *outptr; /* where to put the data */ |
| 2487 | static unsigned outlen; /* how much data required */ |
| 2488 | static unsigned char *pending = NULL; /* any spare data */ |
| 2489 | static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */ |
| 2490 | int from_backend(void *frontend, int is_stderr, const char *data, int datalen) |
| 2491 | { |
| 2492 | unsigned char *p = (unsigned char *) data; |
| 2493 | unsigned len = (unsigned) datalen; |
| 2494 | |
| 2495 | /* |
| 2496 | * stderr data is just spouted to local stderr and otherwise |
| 2497 | * ignored. |
| 2498 | */ |
| 2499 | if (is_stderr) { |
| 2500 | if (len > 0) |
| 2501 | fwrite(data, 1, len, stderr); |
| 2502 | return 0; |
| 2503 | } |
| 2504 | |
| 2505 | /* |
| 2506 | * If this is before the real session begins, just return. |
| 2507 | */ |
| 2508 | if (!outptr) |
| 2509 | return 0; |
| 2510 | |
| 2511 | if ((outlen > 0) && (len > 0)) { |
| 2512 | unsigned used = outlen; |
| 2513 | if (used > len) |
| 2514 | used = len; |
| 2515 | memcpy(outptr, p, used); |
| 2516 | outptr += used; |
| 2517 | outlen -= used; |
| 2518 | p += used; |
| 2519 | len -= used; |
| 2520 | } |
| 2521 | |
| 2522 | if (len > 0) { |
| 2523 | if (pendsize < pendlen + len) { |
| 2524 | pendsize = pendlen + len + 4096; |
| 2525 | pending = sresize(pending, pendsize, unsigned char); |
| 2526 | } |
| 2527 | memcpy(pending + pendlen, p, len); |
| 2528 | pendlen += len; |
| 2529 | } |
| 2530 | |
| 2531 | return 0; |
| 2532 | } |
| 2533 | int from_backend_untrusted(void *frontend_handle, const char *data, int len) |
| 2534 | { |
| 2535 | /* |
| 2536 | * No "untrusted" output should get here (the way the code is |
| 2537 | * currently, it's all diverted by FLAG_STDERR). |
| 2538 | */ |
| 2539 | assert(!"Unexpected call to from_backend_untrusted()"); |
| 2540 | return 0; /* not reached */ |
| 2541 | } |
| 2542 | int sftp_recvdata(char *buf, int len) |
| 2543 | { |
| 2544 | outptr = (unsigned char *) buf; |
| 2545 | outlen = len; |
| 2546 | |
| 2547 | /* |
| 2548 | * See if the pending-input block contains some of what we |
| 2549 | * need. |
| 2550 | */ |
| 2551 | if (pendlen > 0) { |
| 2552 | unsigned pendused = pendlen; |
| 2553 | if (pendused > outlen) |
| 2554 | pendused = outlen; |
| 2555 | memcpy(outptr, pending, pendused); |
| 2556 | memmove(pending, pending + pendused, pendlen - pendused); |
| 2557 | outptr += pendused; |
| 2558 | outlen -= pendused; |
| 2559 | pendlen -= pendused; |
| 2560 | if (pendlen == 0) { |
| 2561 | pendsize = 0; |
| 2562 | sfree(pending); |
| 2563 | pending = NULL; |
| 2564 | } |
| 2565 | if (outlen == 0) |
| 2566 | return 1; |
| 2567 | } |
| 2568 | |
| 2569 | while (outlen > 0) { |
| 2570 | if (back->exitcode(backhandle) >= 0 || ssh_sftp_loop_iteration() < 0) |
| 2571 | return 0; /* doom */ |
| 2572 | } |
| 2573 | |
| 2574 | return 1; |
| 2575 | } |
| 2576 | int sftp_senddata(char *buf, int len) |
| 2577 | { |
| 2578 | back->send(backhandle, buf, len); |
| 2579 | return 1; |
| 2580 | } |
| 2581 | |
| 2582 | /* |
| 2583 | * Short description of parameters. |
| 2584 | */ |
| 2585 | static void usage(void) |
| 2586 | { |
| 2587 | printf("PuTTY Secure File Transfer (SFTP) client\n"); |
| 2588 | printf("%s\n", ver); |
| 2589 | printf("Usage: psftp [options] [user@]host\n"); |
| 2590 | printf("Options:\n"); |
| 2591 | printf(" -V print version information and exit\n"); |
| 2592 | printf(" -pgpfp print PGP key fingerprints and exit\n"); |
| 2593 | printf(" -b file use specified batchfile\n"); |
| 2594 | printf(" -bc output batchfile commands\n"); |
| 2595 | printf(" -be don't stop batchfile processing if errors\n"); |
| 2596 | printf(" -v show verbose messages\n"); |
| 2597 | printf(" -load sessname Load settings from saved session\n"); |
| 2598 | printf(" -l user connect with specified username\n"); |
| 2599 | printf(" -P port connect to specified port\n"); |
| 2600 | printf(" -pw passw login with specified password\n"); |
| 2601 | printf(" -1 -2 force use of particular SSH protocol version\n"); |
| 2602 | printf(" -4 -6 force use of IPv4 or IPv6\n"); |
| 2603 | printf(" -C enable compression\n"); |
| 2604 | printf(" -i key private key file for authentication\n"); |
| 2605 | printf(" -noagent disable use of Pageant\n"); |
| 2606 | printf(" -agent enable use of Pageant\n"); |
| 2607 | printf(" -batch disable all interactive prompts\n"); |
| 2608 | cleanup_exit(1); |
| 2609 | } |
| 2610 | |
| 2611 | static void version(void) |
| 2612 | { |
| 2613 | printf("psftp: %s\n", ver); |
| 2614 | cleanup_exit(1); |
| 2615 | } |
| 2616 | |
| 2617 | /* |
| 2618 | * Connect to a host. |
| 2619 | */ |
| 2620 | static int psftp_connect(char *userhost, char *user, int portnumber) |
| 2621 | { |
| 2622 | char *host, *realhost; |
| 2623 | const char *err; |
| 2624 | void *logctx; |
| 2625 | |
| 2626 | /* Separate host and username */ |
| 2627 | host = userhost; |
| 2628 | host = strrchr(host, '@'); |
| 2629 | if (host == NULL) { |
| 2630 | host = userhost; |
| 2631 | } else { |
| 2632 | *host++ = '\0'; |
| 2633 | if (user) { |
| 2634 | printf("psftp: multiple usernames specified; using \"%s\"\n", |
| 2635 | user); |
| 2636 | } else |
| 2637 | user = userhost; |
| 2638 | } |
| 2639 | |
| 2640 | /* |
| 2641 | * If we haven't loaded session details already (e.g., from -load), |
| 2642 | * try looking for a session called "host". |
| 2643 | */ |
| 2644 | if (!loaded_session) { |
| 2645 | /* Try to load settings for `host' into a temporary config */ |
| 2646 | Config cfg2; |
| 2647 | cfg2.host[0] = '\0'; |
| 2648 | do_defaults(host, &cfg2); |
| 2649 | if (cfg2.host[0] != '\0') { |
| 2650 | /* Settings present and include hostname */ |
| 2651 | /* Re-load data into the real config. */ |
| 2652 | do_defaults(host, &cfg); |
| 2653 | } else { |
| 2654 | /* Session doesn't exist or mention a hostname. */ |
| 2655 | /* Use `host' as a bare hostname. */ |
| 2656 | strncpy(cfg.host, host, sizeof(cfg.host) - 1); |
| 2657 | cfg.host[sizeof(cfg.host) - 1] = '\0'; |
| 2658 | } |
| 2659 | } else { |
| 2660 | /* Patch in hostname `host' to session details. */ |
| 2661 | strncpy(cfg.host, host, sizeof(cfg.host) - 1); |
| 2662 | cfg.host[sizeof(cfg.host) - 1] = '\0'; |
| 2663 | } |
| 2664 | |
| 2665 | /* |
| 2666 | * Force use of SSH. (If they got the protocol wrong we assume the |
| 2667 | * port is useless too.) |
| 2668 | */ |
| 2669 | if (cfg.protocol != PROT_SSH) { |
| 2670 | cfg.protocol = PROT_SSH; |
| 2671 | cfg.port = 22; |
| 2672 | } |
| 2673 | |
| 2674 | /* |
| 2675 | * If saved session / Default Settings says SSH-1 (`1 only' or `1'), |
| 2676 | * then change it to SSH-2, on the grounds that that's more likely to |
| 2677 | * work for SFTP. (Can be overridden with `-1' option.) |
| 2678 | * But if it says `2 only' or `2', respect which. |
| 2679 | */ |
| 2680 | if (cfg.sshprot != 2 && cfg.sshprot != 3) |
| 2681 | cfg.sshprot = 2; |
| 2682 | |
| 2683 | /* |
| 2684 | * Enact command-line overrides. |
| 2685 | */ |
| 2686 | cmdline_run_saved(&cfg); |
| 2687 | |
| 2688 | /* |
| 2689 | * Trim leading whitespace off the hostname if it's there. |
| 2690 | */ |
| 2691 | { |
| 2692 | int space = strspn(cfg.host, " \t"); |
| 2693 | memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space); |
| 2694 | } |
| 2695 | |
| 2696 | /* See if host is of the form user@host */ |
| 2697 | if (cfg.host[0] != '\0') { |
| 2698 | char *atsign = strrchr(cfg.host, '@'); |
| 2699 | /* Make sure we're not overflowing the user field */ |
| 2700 | if (atsign) { |
| 2701 | if (atsign - cfg.host < sizeof cfg.username) { |
| 2702 | strncpy(cfg.username, cfg.host, atsign - cfg.host); |
| 2703 | cfg.username[atsign - cfg.host] = '\0'; |
| 2704 | } |
| 2705 | memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1)); |
| 2706 | } |
| 2707 | } |
| 2708 | |
| 2709 | /* |
| 2710 | * Trim a colon suffix off the hostname if it's there. |
| 2711 | */ |
| 2712 | cfg.host[strcspn(cfg.host, ":")] = '\0'; |
| 2713 | |
| 2714 | /* |
| 2715 | * Remove any remaining whitespace from the hostname. |
| 2716 | */ |
| 2717 | { |
| 2718 | int p1 = 0, p2 = 0; |
| 2719 | while (cfg.host[p2] != '\0') { |
| 2720 | if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') { |
| 2721 | cfg.host[p1] = cfg.host[p2]; |
| 2722 | p1++; |
| 2723 | } |
| 2724 | p2++; |
| 2725 | } |
| 2726 | cfg.host[p1] = '\0'; |
| 2727 | } |
| 2728 | |
| 2729 | /* Set username */ |
| 2730 | if (user != NULL && user[0] != '\0') { |
| 2731 | strncpy(cfg.username, user, sizeof(cfg.username) - 1); |
| 2732 | cfg.username[sizeof(cfg.username) - 1] = '\0'; |
| 2733 | } |
| 2734 | |
| 2735 | if (portnumber) |
| 2736 | cfg.port = portnumber; |
| 2737 | |
| 2738 | /* |
| 2739 | * Disable scary things which shouldn't be enabled for simple |
| 2740 | * things like SCP and SFTP: agent forwarding, port forwarding, |
| 2741 | * X forwarding. |
| 2742 | */ |
| 2743 | cfg.x11_forward = 0; |
| 2744 | cfg.agentfwd = 0; |
| 2745 | cfg.portfwd[0] = cfg.portfwd[1] = '\0'; |
| 2746 | |
| 2747 | /* Set up subsystem name. */ |
| 2748 | strcpy(cfg.remote_cmd, "sftp"); |
| 2749 | cfg.ssh_subsys = TRUE; |
| 2750 | cfg.nopty = TRUE; |
| 2751 | |
| 2752 | /* |
| 2753 | * Set up fallback option, for SSH-1 servers or servers with the |
| 2754 | * sftp subsystem not enabled but the server binary installed |
| 2755 | * in the usual place. We only support fallback on Unix |
| 2756 | * systems, and we use a kludgy piece of shellery which should |
| 2757 | * try to find sftp-server in various places (the obvious |
| 2758 | * systemwide spots /usr/lib and /usr/local/lib, and then the |
| 2759 | * user's PATH) and finally give up. |
| 2760 | * |
| 2761 | * test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server |
| 2762 | * test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server |
| 2763 | * exec sftp-server |
| 2764 | * |
| 2765 | * the idea being that this will attempt to use either of the |
| 2766 | * obvious pathnames and then give up, and when it does give up |
| 2767 | * it will print the preferred pathname in the error messages. |
| 2768 | */ |
| 2769 | cfg.remote_cmd_ptr2 = |
| 2770 | "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n" |
| 2771 | "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n" |
| 2772 | "exec sftp-server"; |
| 2773 | cfg.ssh_subsys2 = FALSE; |
| 2774 | |
| 2775 | back = &ssh_backend; |
| 2776 | |
| 2777 | err = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port, &realhost, |
| 2778 | 0, cfg.tcp_keepalives); |
| 2779 | if (err != NULL) { |
| 2780 | fprintf(stderr, "ssh_init: %s\n", err); |
| 2781 | return 1; |
| 2782 | } |
| 2783 | logctx = log_init(NULL, &cfg); |
| 2784 | back->provide_logctx(backhandle, logctx); |
| 2785 | console_provide_logctx(logctx); |
| 2786 | while (!back->sendok(backhandle)) { |
| 2787 | if (ssh_sftp_loop_iteration() < 0) { |
| 2788 | fprintf(stderr, "ssh_init: error during SSH connection setup\n"); |
| 2789 | return 1; |
| 2790 | } |
| 2791 | } |
| 2792 | if (verbose && realhost != NULL) |
| 2793 | printf("Connected to %s\n", realhost); |
| 2794 | if (realhost != NULL) |
| 2795 | sfree(realhost); |
| 2796 | return 0; |
| 2797 | } |
| 2798 | |
| 2799 | void cmdline_error(char *p, ...) |
| 2800 | { |
| 2801 | va_list ap; |
| 2802 | fprintf(stderr, "psftp: "); |
| 2803 | va_start(ap, p); |
| 2804 | vfprintf(stderr, p, ap); |
| 2805 | va_end(ap); |
| 2806 | fprintf(stderr, "\n try typing \"psftp -h\" for help\n"); |
| 2807 | exit(1); |
| 2808 | } |
| 2809 | |
| 2810 | /* |
| 2811 | * Main program. Parse arguments etc. |
| 2812 | */ |
| 2813 | int psftp_main(int argc, char *argv[]) |
| 2814 | { |
| 2815 | int i; |
| 2816 | int portnumber = 0; |
| 2817 | char *userhost, *user; |
| 2818 | int mode = 0; |
| 2819 | int modeflags = 0; |
| 2820 | char *batchfile = NULL; |
| 2821 | int errors = 0; |
| 2822 | |
| 2823 | flags = FLAG_STDERR | FLAG_INTERACTIVE |
| 2824 | #ifdef FLAG_SYNCAGENT |
| 2825 | | FLAG_SYNCAGENT |
| 2826 | #endif |
| 2827 | ; |
| 2828 | cmdline_tooltype = TOOLTYPE_FILETRANSFER; |
| 2829 | sk_init(); |
| 2830 | |
| 2831 | userhost = user = NULL; |
| 2832 | |
| 2833 | /* Load Default Settings before doing anything else. */ |
| 2834 | do_defaults(NULL, &cfg); |
| 2835 | loaded_session = FALSE; |
| 2836 | |
| 2837 | errors = 0; |
| 2838 | for (i = 1; i < argc; i++) { |
| 2839 | int ret; |
| 2840 | if (argv[i][0] != '-') { |
| 2841 | if (userhost) |
| 2842 | usage(); |
| 2843 | else |
| 2844 | userhost = dupstr(argv[i]); |
| 2845 | continue; |
| 2846 | } |
| 2847 | ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, &cfg); |
| 2848 | if (ret == -2) { |
| 2849 | cmdline_error("option \"%s\" requires an argument", argv[i]); |
| 2850 | } else if (ret == 2) { |
| 2851 | i++; /* skip next argument */ |
| 2852 | } else if (ret == 1) { |
| 2853 | /* We have our own verbosity in addition to `flags'. */ |
| 2854 | if (flags & FLAG_VERBOSE) |
| 2855 | verbose = 1; |
| 2856 | } else if (strcmp(argv[i], "-h") == 0 || |
| 2857 | strcmp(argv[i], "-?") == 0) { |
| 2858 | usage(); |
| 2859 | } else if (strcmp(argv[i], "-pgpfp") == 0) { |
| 2860 | pgp_fingerprints(); |
| 2861 | return 1; |
| 2862 | } else if (strcmp(argv[i], "-V") == 0) { |
| 2863 | version(); |
| 2864 | } else if (strcmp(argv[i], "-batch") == 0) { |
| 2865 | console_batch_mode = 1; |
| 2866 | } else if (strcmp(argv[i], "-b") == 0 && i + 1 < argc) { |
| 2867 | mode = 1; |
| 2868 | batchfile = argv[++i]; |
| 2869 | } else if (strcmp(argv[i], "-bc") == 0) { |
| 2870 | modeflags = modeflags | 1; |
| 2871 | } else if (strcmp(argv[i], "-be") == 0) { |
| 2872 | modeflags = modeflags | 2; |
| 2873 | } else if (strcmp(argv[i], "--") == 0) { |
| 2874 | i++; |
| 2875 | break; |
| 2876 | } else { |
| 2877 | cmdline_error("unknown option \"%s\"", argv[i]); |
| 2878 | } |
| 2879 | } |
| 2880 | argc -= i; |
| 2881 | argv += i; |
| 2882 | back = NULL; |
| 2883 | |
| 2884 | /* |
| 2885 | * If the loaded session provides a hostname, and a hostname has not |
| 2886 | * otherwise been specified, pop it in `userhost' so that |
| 2887 | * `psftp -load sessname' is sufficient to start a session. |
| 2888 | */ |
| 2889 | if (!userhost && cfg.host[0] != '\0') { |
| 2890 | userhost = dupstr(cfg.host); |
| 2891 | } |
| 2892 | |
| 2893 | /* |
| 2894 | * If a user@host string has already been provided, connect to |
| 2895 | * it now. |
| 2896 | */ |
| 2897 | if (userhost) { |
| 2898 | int ret; |
| 2899 | ret = psftp_connect(userhost, user, portnumber); |
| 2900 | sfree(userhost); |
| 2901 | if (ret) |
| 2902 | return 1; |
| 2903 | if (do_sftp_init()) |
| 2904 | return 1; |
| 2905 | } else { |
| 2906 | printf("psftp: no hostname specified; use \"open host.name\"" |
| 2907 | " to connect\n"); |
| 2908 | } |
| 2909 | |
| 2910 | do_sftp(mode, modeflags, batchfile); |
| 2911 | |
| 2912 | if (back != NULL && back->connected(backhandle)) { |
| 2913 | char ch; |
| 2914 | back->special(backhandle, TS_EOF); |
| 2915 | sftp_recvdata(&ch, 1); |
| 2916 | } |
| 2917 | do_sftp_cleanup(); |
| 2918 | random_save_seed(); |
| 2919 | cmdline_cleanup(); |
| 2920 | console_provide_logctx(NULL); |
| 2921 | sk_cleanup(); |
| 2922 | |
| 2923 | return 0; |
| 2924 | } |