| 1 | /* |
| 2 | * scp.c - Scp (Secure Copy) client for PuTTY. |
| 3 | * Joris van Rantwijk, Simon Tatham |
| 4 | * |
| 5 | * This is mainly based on ssh-1.2.26/scp.c by Timo Rinne & Tatu Ylonen. |
| 6 | * They, in turn, used stuff from BSD rcp. |
| 7 | * |
| 8 | * (SGT, 2001-09-10: Joris van Rantwijk assures me that although |
| 9 | * this file as originally submitted was inspired by, and |
| 10 | * _structurally_ based on, ssh-1.2.26's scp.c, there wasn't any |
| 11 | * actual code duplicated, so the above comment shouldn't give rise |
| 12 | * to licensing issues.) |
| 13 | */ |
| 14 | |
| 15 | #include <windows.h> |
| 16 | #ifndef AUTO_WINSOCK |
| 17 | #ifdef WINSOCK_TWO |
| 18 | #include <winsock2.h> |
| 19 | #else |
| 20 | #include <winsock.h> |
| 21 | #endif |
| 22 | #endif |
| 23 | #include <stdlib.h> |
| 24 | #include <stdio.h> |
| 25 | #include <string.h> |
| 26 | #include <limits.h> |
| 27 | #include <time.h> |
| 28 | #include <assert.h> |
| 29 | |
| 30 | #define PUTTY_DO_GLOBALS |
| 31 | #include "putty.h" |
| 32 | #include "ssh.h" |
| 33 | #include "sftp.h" |
| 34 | #include "winstuff.h" |
| 35 | #include "storage.h" |
| 36 | |
| 37 | #define TIME_POSIX_TO_WIN(t, ft) (*(LONGLONG*)&(ft) = \ |
| 38 | ((LONGLONG) (t) + (LONGLONG) 11644473600) * (LONGLONG) 10000000) |
| 39 | #define TIME_WIN_TO_POSIX(ft, t) ((t) = (unsigned long) \ |
| 40 | ((*(LONGLONG*)&(ft)) / (LONGLONG) 10000000 - (LONGLONG) 11644473600)) |
| 41 | |
| 42 | /* GUI Adaptation - Sept 2000 */ |
| 43 | |
| 44 | /* This is just a base value from which the main message numbers are |
| 45 | * derived. */ |
| 46 | #define WM_APP_BASE 0x8000 |
| 47 | |
| 48 | /* These two pass a single character value in wParam. They represent |
| 49 | * the visible output from PSCP. */ |
| 50 | #define WM_STD_OUT_CHAR ( WM_APP_BASE+400 ) |
| 51 | #define WM_STD_ERR_CHAR ( WM_APP_BASE+401 ) |
| 52 | |
| 53 | /* These pass a transfer status update. WM_STATS_CHAR passes a single |
| 54 | * character in wParam, and is called repeatedly to pass the name of |
| 55 | * the file, terminated with "\n". WM_STATS_SIZE passes the size of |
| 56 | * the file being transferred in wParam. WM_STATS_ELAPSED is called |
| 57 | * to pass the elapsed time (in seconds) in wParam, and |
| 58 | * WM_STATS_PERCENT passes the percentage of the transfer which is |
| 59 | * complete, also in wParam. */ |
| 60 | #define WM_STATS_CHAR ( WM_APP_BASE+402 ) |
| 61 | #define WM_STATS_SIZE ( WM_APP_BASE+403 ) |
| 62 | #define WM_STATS_PERCENT ( WM_APP_BASE+404 ) |
| 63 | #define WM_STATS_ELAPSED ( WM_APP_BASE+405 ) |
| 64 | |
| 65 | /* These are used at the end of a run to pass an error code in |
| 66 | * wParam: zero means success, nonzero means failure. WM_RET_ERR_CNT |
| 67 | * is used after a copy, and WM_LS_RET_ERR_CNT is used after a file |
| 68 | * list operation. */ |
| 69 | #define WM_RET_ERR_CNT ( WM_APP_BASE+406 ) |
| 70 | #define WM_LS_RET_ERR_CNT ( WM_APP_BASE+407 ) |
| 71 | |
| 72 | /* More transfer status update messages. WM_STATS_DONE passes the |
| 73 | * number of bytes sent so far in wParam. WM_STATS_ETA passes the |
| 74 | * estimated time to completion (in seconds). WM_STATS_RATEBS passes |
| 75 | * the average transfer rate (in bytes per second). */ |
| 76 | #define WM_STATS_DONE ( WM_APP_BASE+408 ) |
| 77 | #define WM_STATS_ETA ( WM_APP_BASE+409 ) |
| 78 | #define WM_STATS_RATEBS ( WM_APP_BASE+410 ) |
| 79 | |
| 80 | static int list = 0; |
| 81 | static int verbose = 0; |
| 82 | static int recursive = 0; |
| 83 | static int preserve = 0; |
| 84 | static int targetshouldbedirectory = 0; |
| 85 | static int statistics = 1; |
| 86 | static int prev_stats_len = 0; |
| 87 | static int scp_unsafe_mode = 0; |
| 88 | static int errs = 0; |
| 89 | /* GUI Adaptation - Sept 2000 */ |
| 90 | #define NAME_STR_MAX 2048 |
| 91 | static char statname[NAME_STR_MAX + 1]; |
| 92 | static unsigned long statsize = 0; |
| 93 | static unsigned long statdone = 0; |
| 94 | static unsigned long stateta = 0; |
| 95 | static unsigned long statratebs = 0; |
| 96 | static int statperct = 0; |
| 97 | static unsigned long statelapsed = 0; |
| 98 | static int gui_mode = 0; |
| 99 | static char *gui_hwnd = NULL; |
| 100 | static int using_sftp = 0; |
| 101 | |
| 102 | static Backend *back; |
| 103 | static void *backhandle; |
| 104 | |
| 105 | static void source(char *src); |
| 106 | static void rsource(char *src); |
| 107 | static void sink(char *targ, char *src); |
| 108 | /* GUI Adaptation - Sept 2000 */ |
| 109 | static void tell_char(FILE * stream, char c); |
| 110 | static void tell_str(FILE * stream, char *str); |
| 111 | static void tell_user(FILE * stream, char *fmt, ...); |
| 112 | static void gui_update_stats(char *name, unsigned long size, |
| 113 | int percentage, unsigned long elapsed, |
| 114 | unsigned long done, unsigned long eta, |
| 115 | unsigned long ratebs); |
| 116 | |
| 117 | /* |
| 118 | * The maximum amount of queued data we accept before we stop and |
| 119 | * wait for the server to process some. |
| 120 | */ |
| 121 | #define MAX_SCP_BUFSIZE 16384 |
| 122 | |
| 123 | void ldisc_send(void *handle, char *buf, int len, int interactive) |
| 124 | { |
| 125 | /* |
| 126 | * This is only here because of the calls to ldisc_send(NULL, |
| 127 | * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc |
| 128 | * as an ldisc. So if we get called with any real data, I want |
| 129 | * to know about it. |
| 130 | */ |
| 131 | assert(len == 0); |
| 132 | } |
| 133 | |
| 134 | /* GUI Adaptation - Sept 2000 */ |
| 135 | static void send_msg(HWND h, UINT message, WPARAM wParam) |
| 136 | { |
| 137 | while (!PostMessage(h, message, wParam, 0)) |
| 138 | SleepEx(1000, TRUE); |
| 139 | } |
| 140 | |
| 141 | static void tell_char(FILE * stream, char c) |
| 142 | { |
| 143 | if (!gui_mode) |
| 144 | fputc(c, stream); |
| 145 | else { |
| 146 | unsigned int msg_id = WM_STD_OUT_CHAR; |
| 147 | if (stream == stderr) |
| 148 | msg_id = WM_STD_ERR_CHAR; |
| 149 | send_msg((HWND) atoi(gui_hwnd), msg_id, (WPARAM) c); |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | static void tell_str(FILE * stream, char *str) |
| 154 | { |
| 155 | unsigned int i; |
| 156 | |
| 157 | for (i = 0; i < strlen(str); ++i) |
| 158 | tell_char(stream, str[i]); |
| 159 | } |
| 160 | |
| 161 | static void tell_user(FILE * stream, char *fmt, ...) |
| 162 | { |
| 163 | char *str, *str2; |
| 164 | va_list ap; |
| 165 | va_start(ap, fmt); |
| 166 | str = dupvprintf(fmt, ap); |
| 167 | va_end(ap); |
| 168 | str2 = dupcat(str, "\n", NULL); |
| 169 | sfree(str); |
| 170 | tell_str(stream, str2); |
| 171 | sfree(str2); |
| 172 | } |
| 173 | |
| 174 | static void gui_update_stats(char *name, unsigned long size, |
| 175 | int percentage, unsigned long elapsed, |
| 176 | unsigned long done, unsigned long eta, |
| 177 | unsigned long ratebs) |
| 178 | { |
| 179 | unsigned int i; |
| 180 | |
| 181 | if (strcmp(name, statname) != 0) { |
| 182 | for (i = 0; i < strlen(name); ++i) |
| 183 | send_msg((HWND) atoi(gui_hwnd), WM_STATS_CHAR, |
| 184 | (WPARAM) name[i]); |
| 185 | send_msg((HWND) atoi(gui_hwnd), WM_STATS_CHAR, (WPARAM) '\n'); |
| 186 | strcpy(statname, name); |
| 187 | } |
| 188 | if (statsize != size) { |
| 189 | send_msg((HWND) atoi(gui_hwnd), WM_STATS_SIZE, (WPARAM) size); |
| 190 | statsize = size; |
| 191 | } |
| 192 | if (statdone != done) { |
| 193 | send_msg((HWND) atoi(gui_hwnd), WM_STATS_DONE, (WPARAM) done); |
| 194 | statdone = done; |
| 195 | } |
| 196 | if (stateta != eta) { |
| 197 | send_msg((HWND) atoi(gui_hwnd), WM_STATS_ETA, (WPARAM) eta); |
| 198 | stateta = eta; |
| 199 | } |
| 200 | if (statratebs != ratebs) { |
| 201 | send_msg((HWND) atoi(gui_hwnd), WM_STATS_RATEBS, (WPARAM) ratebs); |
| 202 | statratebs = ratebs; |
| 203 | } |
| 204 | if (statelapsed != elapsed) { |
| 205 | send_msg((HWND) atoi(gui_hwnd), WM_STATS_ELAPSED, |
| 206 | (WPARAM) elapsed); |
| 207 | statelapsed = elapsed; |
| 208 | } |
| 209 | if (statperct != percentage) { |
| 210 | send_msg((HWND) atoi(gui_hwnd), WM_STATS_PERCENT, |
| 211 | (WPARAM) percentage); |
| 212 | statperct = percentage; |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | /* |
| 217 | * Print an error message and perform a fatal exit. |
| 218 | */ |
| 219 | void fatalbox(char *fmt, ...) |
| 220 | { |
| 221 | char *str, *str2; |
| 222 | va_list ap; |
| 223 | va_start(ap, fmt); |
| 224 | str = dupvprintf(fmt, ap); |
| 225 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
| 226 | sfree(str); |
| 227 | va_end(ap); |
| 228 | tell_str(stderr, str2); |
| 229 | sfree(str2); |
| 230 | errs++; |
| 231 | |
| 232 | if (gui_mode) { |
| 233 | unsigned int msg_id = WM_RET_ERR_CNT; |
| 234 | if (list) |
| 235 | msg_id = WM_LS_RET_ERR_CNT; |
| 236 | while (!PostMessage |
| 237 | ((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs, |
| 238 | 0 /*lParam */ ))SleepEx(1000, TRUE); |
| 239 | } |
| 240 | |
| 241 | cleanup_exit(1); |
| 242 | } |
| 243 | void modalfatalbox(char *fmt, ...) |
| 244 | { |
| 245 | char *str, *str2; |
| 246 | va_list ap; |
| 247 | va_start(ap, fmt); |
| 248 | str = dupvprintf(fmt, ap); |
| 249 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
| 250 | sfree(str); |
| 251 | va_end(ap); |
| 252 | tell_str(stderr, str2); |
| 253 | sfree(str2); |
| 254 | errs++; |
| 255 | |
| 256 | if (gui_mode) { |
| 257 | unsigned int msg_id = WM_RET_ERR_CNT; |
| 258 | if (list) |
| 259 | msg_id = WM_LS_RET_ERR_CNT; |
| 260 | while (!PostMessage |
| 261 | ((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs, |
| 262 | 0 /*lParam */ ))SleepEx(1000, TRUE); |
| 263 | } |
| 264 | |
| 265 | cleanup_exit(1); |
| 266 | } |
| 267 | void connection_fatal(void *frontend, char *fmt, ...) |
| 268 | { |
| 269 | char *str, *str2; |
| 270 | va_list ap; |
| 271 | va_start(ap, fmt); |
| 272 | str = dupvprintf(fmt, ap); |
| 273 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
| 274 | sfree(str); |
| 275 | va_end(ap); |
| 276 | tell_str(stderr, str2); |
| 277 | sfree(str2); |
| 278 | errs++; |
| 279 | |
| 280 | if (gui_mode) { |
| 281 | unsigned int msg_id = WM_RET_ERR_CNT; |
| 282 | if (list) |
| 283 | msg_id = WM_LS_RET_ERR_CNT; |
| 284 | while (!PostMessage |
| 285 | ((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs, |
| 286 | 0 /*lParam */ ))SleepEx(1000, TRUE); |
| 287 | } |
| 288 | |
| 289 | cleanup_exit(1); |
| 290 | } |
| 291 | |
| 292 | /* |
| 293 | * Be told what socket we're supposed to be using. |
| 294 | */ |
| 295 | static SOCKET scp_ssh_socket; |
| 296 | char *do_select(SOCKET skt, int startup) |
| 297 | { |
| 298 | if (startup) |
| 299 | scp_ssh_socket = skt; |
| 300 | else |
| 301 | scp_ssh_socket = INVALID_SOCKET; |
| 302 | return NULL; |
| 303 | } |
| 304 | extern int select_result(WPARAM, LPARAM); |
| 305 | |
| 306 | /* |
| 307 | * Receive a block of data from the SSH link. Block until all data |
| 308 | * is available. |
| 309 | * |
| 310 | * To do this, we repeatedly call the SSH protocol module, with our |
| 311 | * own trap in from_backend() to catch the data that comes back. We |
| 312 | * do this until we have enough data. |
| 313 | */ |
| 314 | |
| 315 | static unsigned char *outptr; /* where to put the data */ |
| 316 | static unsigned outlen; /* how much data required */ |
| 317 | static unsigned char *pending = NULL; /* any spare data */ |
| 318 | static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */ |
| 319 | int from_backend(void *frontend, int is_stderr, char *data, int datalen) |
| 320 | { |
| 321 | unsigned char *p = (unsigned char *) data; |
| 322 | unsigned len = (unsigned) datalen; |
| 323 | |
| 324 | assert(len > 0); |
| 325 | |
| 326 | /* |
| 327 | * stderr data is just spouted to local stderr and otherwise |
| 328 | * ignored. |
| 329 | */ |
| 330 | if (is_stderr) { |
| 331 | fwrite(data, 1, len, stderr); |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | /* |
| 336 | * If this is before the real session begins, just return. |
| 337 | */ |
| 338 | if (!outptr) |
| 339 | return 0; |
| 340 | |
| 341 | if (outlen > 0) { |
| 342 | unsigned used = outlen; |
| 343 | if (used > len) |
| 344 | used = len; |
| 345 | memcpy(outptr, p, used); |
| 346 | outptr += used; |
| 347 | outlen -= used; |
| 348 | p += used; |
| 349 | len -= used; |
| 350 | } |
| 351 | |
| 352 | if (len > 0) { |
| 353 | if (pendsize < pendlen + len) { |
| 354 | pendsize = pendlen + len + 4096; |
| 355 | pending = (pending ? srealloc(pending, pendsize) : |
| 356 | smalloc(pendsize)); |
| 357 | if (!pending) |
| 358 | fatalbox("Out of memory"); |
| 359 | } |
| 360 | memcpy(pending + pendlen, p, len); |
| 361 | pendlen += len; |
| 362 | } |
| 363 | |
| 364 | return 0; |
| 365 | } |
| 366 | static int scp_process_network_event(void) |
| 367 | { |
| 368 | fd_set readfds; |
| 369 | |
| 370 | FD_ZERO(&readfds); |
| 371 | FD_SET(scp_ssh_socket, &readfds); |
| 372 | if (select(1, &readfds, NULL, NULL, NULL) < 0) |
| 373 | return 0; /* doom */ |
| 374 | select_result((WPARAM) scp_ssh_socket, (LPARAM) FD_READ); |
| 375 | return 1; |
| 376 | } |
| 377 | static int ssh_scp_recv(unsigned char *buf, int len) |
| 378 | { |
| 379 | outptr = buf; |
| 380 | outlen = len; |
| 381 | |
| 382 | /* |
| 383 | * See if the pending-input block contains some of what we |
| 384 | * need. |
| 385 | */ |
| 386 | if (pendlen > 0) { |
| 387 | unsigned pendused = pendlen; |
| 388 | if (pendused > outlen) |
| 389 | pendused = outlen; |
| 390 | memcpy(outptr, pending, pendused); |
| 391 | memmove(pending, pending + pendused, pendlen - pendused); |
| 392 | outptr += pendused; |
| 393 | outlen -= pendused; |
| 394 | pendlen -= pendused; |
| 395 | if (pendlen == 0) { |
| 396 | pendsize = 0; |
| 397 | sfree(pending); |
| 398 | pending = NULL; |
| 399 | } |
| 400 | if (outlen == 0) |
| 401 | return len; |
| 402 | } |
| 403 | |
| 404 | while (outlen > 0) { |
| 405 | if (!scp_process_network_event()) |
| 406 | return 0; /* doom */ |
| 407 | } |
| 408 | |
| 409 | return len; |
| 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Loop through the ssh connection and authentication process. |
| 414 | */ |
| 415 | static void ssh_scp_init(void) |
| 416 | { |
| 417 | if (scp_ssh_socket == INVALID_SOCKET) |
| 418 | return; |
| 419 | while (!back->sendok(backhandle)) { |
| 420 | fd_set readfds; |
| 421 | FD_ZERO(&readfds); |
| 422 | FD_SET(scp_ssh_socket, &readfds); |
| 423 | if (select(1, &readfds, NULL, NULL, NULL) < 0) |
| 424 | return; /* doom */ |
| 425 | select_result((WPARAM) scp_ssh_socket, (LPARAM) FD_READ); |
| 426 | } |
| 427 | using_sftp = !ssh_fallback_cmd(backhandle); |
| 428 | } |
| 429 | |
| 430 | /* |
| 431 | * Print an error message and exit after closing the SSH link. |
| 432 | */ |
| 433 | static void bump(char *fmt, ...) |
| 434 | { |
| 435 | char *str, *str2; |
| 436 | va_list ap; |
| 437 | va_start(ap, fmt); |
| 438 | str = dupvprintf(fmt, ap); |
| 439 | va_end(ap); |
| 440 | str2 = dupcat(str, "\n", NULL); |
| 441 | sfree(str); |
| 442 | tell_str(stderr, str2); |
| 443 | sfree(str2); |
| 444 | errs++; |
| 445 | |
| 446 | if (back != NULL && back->socket(backhandle) != NULL) { |
| 447 | char ch; |
| 448 | back->special(backhandle, TS_EOF); |
| 449 | ssh_scp_recv(&ch, 1); |
| 450 | } |
| 451 | |
| 452 | if (gui_mode) { |
| 453 | unsigned int msg_id = WM_RET_ERR_CNT; |
| 454 | if (list) |
| 455 | msg_id = WM_LS_RET_ERR_CNT; |
| 456 | while (!PostMessage |
| 457 | ((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs, |
| 458 | 0 /*lParam */ ))SleepEx(1000, TRUE); |
| 459 | } |
| 460 | |
| 461 | cleanup_exit(1); |
| 462 | } |
| 463 | |
| 464 | /* |
| 465 | * Open an SSH connection to user@host and execute cmd. |
| 466 | */ |
| 467 | static void do_cmd(char *host, char *user, char *cmd) |
| 468 | { |
| 469 | char *err, *realhost; |
| 470 | DWORD namelen; |
| 471 | |
| 472 | if (host == NULL || host[0] == '\0') |
| 473 | bump("Empty host name"); |
| 474 | |
| 475 | /* Try to load settings for this host */ |
| 476 | do_defaults(host, &cfg); |
| 477 | if (cfg.host[0] == '\0') { |
| 478 | /* No settings for this host; use defaults */ |
| 479 | do_defaults(NULL, &cfg); |
| 480 | strncpy(cfg.host, host, sizeof(cfg.host) - 1); |
| 481 | cfg.host[sizeof(cfg.host) - 1] = '\0'; |
| 482 | } |
| 483 | |
| 484 | /* |
| 485 | * Force use of SSH. (If they got the protocol wrong we assume the |
| 486 | * port is useless too.) |
| 487 | */ |
| 488 | if (cfg.protocol != PROT_SSH) { |
| 489 | cfg.protocol = PROT_SSH; |
| 490 | cfg.port = 22; |
| 491 | } |
| 492 | |
| 493 | /* |
| 494 | * Enact command-line overrides. |
| 495 | */ |
| 496 | cmdline_run_saved(); |
| 497 | |
| 498 | /* |
| 499 | * Trim leading whitespace off the hostname if it's there. |
| 500 | */ |
| 501 | { |
| 502 | int space = strspn(cfg.host, " \t"); |
| 503 | memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space); |
| 504 | } |
| 505 | |
| 506 | /* See if host is of the form user@host */ |
| 507 | if (cfg.host[0] != '\0') { |
| 508 | char *atsign = strchr(cfg.host, '@'); |
| 509 | /* Make sure we're not overflowing the user field */ |
| 510 | if (atsign) { |
| 511 | if (atsign - cfg.host < sizeof cfg.username) { |
| 512 | strncpy(cfg.username, cfg.host, atsign - cfg.host); |
| 513 | cfg.username[atsign - cfg.host] = '\0'; |
| 514 | } |
| 515 | memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1)); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | /* |
| 520 | * Trim a colon suffix off the hostname if it's there. |
| 521 | */ |
| 522 | cfg.host[strcspn(cfg.host, ":")] = '\0'; |
| 523 | |
| 524 | /* |
| 525 | * Remove any remaining whitespace from the hostname. |
| 526 | */ |
| 527 | { |
| 528 | int p1 = 0, p2 = 0; |
| 529 | while (cfg.host[p2] != '\0') { |
| 530 | if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') { |
| 531 | cfg.host[p1] = cfg.host[p2]; |
| 532 | p1++; |
| 533 | } |
| 534 | p2++; |
| 535 | } |
| 536 | cfg.host[p1] = '\0'; |
| 537 | } |
| 538 | |
| 539 | /* Set username */ |
| 540 | if (user != NULL && user[0] != '\0') { |
| 541 | strncpy(cfg.username, user, sizeof(cfg.username) - 1); |
| 542 | cfg.username[sizeof(cfg.username) - 1] = '\0'; |
| 543 | } else if (cfg.username[0] == '\0') { |
| 544 | namelen = 0; |
| 545 | if (GetUserName(user, &namelen) == FALSE) |
| 546 | bump("Empty user name"); |
| 547 | user = smalloc(namelen * sizeof(char)); |
| 548 | GetUserName(user, &namelen); |
| 549 | if (verbose) |
| 550 | tell_user(stderr, "Guessing user name: %s", user); |
| 551 | strncpy(cfg.username, user, sizeof(cfg.username) - 1); |
| 552 | cfg.username[sizeof(cfg.username) - 1] = '\0'; |
| 553 | free(user); |
| 554 | } |
| 555 | |
| 556 | /* |
| 557 | * Disable scary things which shouldn't be enabled for simple |
| 558 | * things like SCP and SFTP: agent forwarding, port forwarding, |
| 559 | * X forwarding. |
| 560 | */ |
| 561 | cfg.x11_forward = 0; |
| 562 | cfg.agentfwd = 0; |
| 563 | cfg.portfwd[0] = cfg.portfwd[1] = '\0'; |
| 564 | |
| 565 | /* |
| 566 | * Attempt to start the SFTP subsystem as a first choice, |
| 567 | * falling back to the provided scp command if that fails. |
| 568 | */ |
| 569 | strcpy(cfg.remote_cmd, "sftp"); |
| 570 | cfg.ssh_subsys = TRUE; |
| 571 | cfg.remote_cmd_ptr2 = cmd; |
| 572 | cfg.ssh_subsys2 = FALSE; |
| 573 | cfg.nopty = TRUE; |
| 574 | |
| 575 | back = &ssh_backend; |
| 576 | |
| 577 | err = back->init(NULL, &backhandle, cfg.host, cfg.port, &realhost, 0); |
| 578 | if (err != NULL) |
| 579 | bump("ssh_init: %s", err); |
| 580 | logctx = log_init(NULL); |
| 581 | back->provide_logctx(backhandle, logctx); |
| 582 | ssh_scp_init(); |
| 583 | if (verbose && realhost != NULL) |
| 584 | tell_user(stderr, "Connected to %s\n", realhost); |
| 585 | sfree(realhost); |
| 586 | } |
| 587 | |
| 588 | /* |
| 589 | * Update statistic information about current file. |
| 590 | */ |
| 591 | static void print_stats(char *name, unsigned long size, unsigned long done, |
| 592 | time_t start, time_t now) |
| 593 | { |
| 594 | float ratebs; |
| 595 | unsigned long eta; |
| 596 | char etastr[10]; |
| 597 | int pct; |
| 598 | int len; |
| 599 | int elap; |
| 600 | |
| 601 | elap = (unsigned long) difftime(now, start); |
| 602 | |
| 603 | if (now > start) |
| 604 | ratebs = (float) done / elap; |
| 605 | else |
| 606 | ratebs = (float) done; |
| 607 | |
| 608 | if (ratebs < 1.0) |
| 609 | eta = size - done; |
| 610 | else |
| 611 | eta = (unsigned long) ((size - done) / ratebs); |
| 612 | sprintf(etastr, "%02ld:%02ld:%02ld", |
| 613 | eta / 3600, (eta % 3600) / 60, eta % 60); |
| 614 | |
| 615 | pct = (int) (100 * (done * 1.0 / size)); |
| 616 | |
| 617 | if (gui_mode) |
| 618 | /* GUI Adaptation - Sept 2000 */ |
| 619 | gui_update_stats(name, size, pct, elap, done, eta, |
| 620 | (unsigned long) ratebs); |
| 621 | else { |
| 622 | len = printf("\r%-25.25s | %10ld kB | %5.1f kB/s | ETA: %8s | %3d%%", |
| 623 | name, done / 1024, ratebs / 1024.0, etastr, pct); |
| 624 | if (len < prev_stats_len) |
| 625 | printf("%*s", prev_stats_len - len, ""); |
| 626 | prev_stats_len = len; |
| 627 | |
| 628 | if (done == size) |
| 629 | printf("\n"); |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | * Find a colon in str and return a pointer to the colon. |
| 635 | * This is used to separate hostname from filename. |
| 636 | */ |
| 637 | static char *colon(char *str) |
| 638 | { |
| 639 | /* We ignore a leading colon, since the hostname cannot be |
| 640 | empty. We also ignore a colon as second character because |
| 641 | of filenames like f:myfile.txt. */ |
| 642 | if (str[0] == '\0' || str[0] == ':' || str[1] == ':') |
| 643 | return (NULL); |
| 644 | while (*str != '\0' && *str != ':' && *str != '/' && *str != '\\') |
| 645 | str++; |
| 646 | if (*str == ':') |
| 647 | return (str); |
| 648 | else |
| 649 | return (NULL); |
| 650 | } |
| 651 | |
| 652 | /* |
| 653 | * Return a pointer to the portion of str that comes after the last |
| 654 | * slash (or backslash or colon, if `local' is TRUE). |
| 655 | */ |
| 656 | static char *stripslashes(char *str, int local) |
| 657 | { |
| 658 | char *p; |
| 659 | |
| 660 | if (local) { |
| 661 | p = strchr(str, ':'); |
| 662 | if (p) str = p+1; |
| 663 | } |
| 664 | |
| 665 | p = strrchr(str, '/'); |
| 666 | if (p) str = p+1; |
| 667 | |
| 668 | if (local) { |
| 669 | p = strrchr(str, '\\'); |
| 670 | if (p) str = p+1; |
| 671 | } |
| 672 | |
| 673 | return str; |
| 674 | } |
| 675 | |
| 676 | /* |
| 677 | * Determine whether a string is entirely composed of dots. |
| 678 | */ |
| 679 | static int is_dots(char *str) |
| 680 | { |
| 681 | return str[strspn(str, ".")] == '\0'; |
| 682 | } |
| 683 | |
| 684 | /* |
| 685 | * Wait for a response from the other side. |
| 686 | * Return 0 if ok, -1 if error. |
| 687 | */ |
| 688 | static int response(void) |
| 689 | { |
| 690 | char ch, resp, rbuf[2048]; |
| 691 | int p; |
| 692 | |
| 693 | if (ssh_scp_recv(&resp, 1) <= 0) |
| 694 | bump("Lost connection"); |
| 695 | |
| 696 | p = 0; |
| 697 | switch (resp) { |
| 698 | case 0: /* ok */ |
| 699 | return (0); |
| 700 | default: |
| 701 | rbuf[p++] = resp; |
| 702 | /* fallthrough */ |
| 703 | case 1: /* error */ |
| 704 | case 2: /* fatal error */ |
| 705 | do { |
| 706 | if (ssh_scp_recv(&ch, 1) <= 0) |
| 707 | bump("Protocol error: Lost connection"); |
| 708 | rbuf[p++] = ch; |
| 709 | } while (p < sizeof(rbuf) && ch != '\n'); |
| 710 | rbuf[p - 1] = '\0'; |
| 711 | if (resp == 1) |
| 712 | tell_user(stderr, "%s\n", rbuf); |
| 713 | else |
| 714 | bump("%s", rbuf); |
| 715 | errs++; |
| 716 | return (-1); |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | int sftp_recvdata(char *buf, int len) |
| 721 | { |
| 722 | return ssh_scp_recv(buf, len); |
| 723 | } |
| 724 | int sftp_senddata(char *buf, int len) |
| 725 | { |
| 726 | back->send(backhandle, (unsigned char *) buf, len); |
| 727 | return 1; |
| 728 | } |
| 729 | |
| 730 | /* ---------------------------------------------------------------------- |
| 731 | * sftp-based replacement for the hacky `pscp -ls'. |
| 732 | */ |
| 733 | static int sftp_ls_compare(const void *av, const void *bv) |
| 734 | { |
| 735 | const struct fxp_name *a = (const struct fxp_name *) av; |
| 736 | const struct fxp_name *b = (const struct fxp_name *) bv; |
| 737 | return strcmp(a->filename, b->filename); |
| 738 | } |
| 739 | void scp_sftp_listdir(char *dirname) |
| 740 | { |
| 741 | struct fxp_handle *dirh; |
| 742 | struct fxp_names *names; |
| 743 | struct fxp_name *ournames; |
| 744 | int nnames, namesize; |
| 745 | int i; |
| 746 | |
| 747 | if (!fxp_init()) { |
| 748 | tell_user(stderr, "unable to initialise SFTP: %s", fxp_error()); |
| 749 | errs++; |
| 750 | return; |
| 751 | } |
| 752 | |
| 753 | printf("Listing directory %s\n", dirname); |
| 754 | |
| 755 | dirh = fxp_opendir(dirname); |
| 756 | if (dirh == NULL) { |
| 757 | printf("Unable to open %s: %s\n", dirname, fxp_error()); |
| 758 | } else { |
| 759 | nnames = namesize = 0; |
| 760 | ournames = NULL; |
| 761 | |
| 762 | while (1) { |
| 763 | |
| 764 | names = fxp_readdir(dirh); |
| 765 | if (names == NULL) { |
| 766 | if (fxp_error_type() == SSH_FX_EOF) |
| 767 | break; |
| 768 | printf("Reading directory %s: %s\n", dirname, fxp_error()); |
| 769 | break; |
| 770 | } |
| 771 | if (names->nnames == 0) { |
| 772 | fxp_free_names(names); |
| 773 | break; |
| 774 | } |
| 775 | |
| 776 | if (nnames + names->nnames >= namesize) { |
| 777 | namesize += names->nnames + 128; |
| 778 | ournames = |
| 779 | srealloc(ournames, namesize * sizeof(*ournames)); |
| 780 | } |
| 781 | |
| 782 | for (i = 0; i < names->nnames; i++) |
| 783 | ournames[nnames++] = names->names[i]; |
| 784 | |
| 785 | names->nnames = 0; /* prevent free_names */ |
| 786 | fxp_free_names(names); |
| 787 | } |
| 788 | fxp_close(dirh); |
| 789 | |
| 790 | /* |
| 791 | * Now we have our filenames. Sort them by actual file |
| 792 | * name, and then output the longname parts. |
| 793 | */ |
| 794 | qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare); |
| 795 | |
| 796 | /* |
| 797 | * And print them. |
| 798 | */ |
| 799 | for (i = 0; i < nnames; i++) |
| 800 | printf("%s\n", ournames[i].longname); |
| 801 | } |
| 802 | } |
| 803 | |
| 804 | /* ---------------------------------------------------------------------- |
| 805 | * Helper routines that contain the actual SCP protocol elements, |
| 806 | * implemented both as SCP1 and SFTP. |
| 807 | */ |
| 808 | |
| 809 | static struct scp_sftp_dirstack { |
| 810 | struct scp_sftp_dirstack *next; |
| 811 | struct fxp_name *names; |
| 812 | int namepos, namelen; |
| 813 | char *dirpath; |
| 814 | char *wildcard; |
| 815 | int matched_something; /* wildcard match set was non-empty */ |
| 816 | } *scp_sftp_dirstack_head; |
| 817 | static char *scp_sftp_remotepath, *scp_sftp_currentname; |
| 818 | static char *scp_sftp_wildcard; |
| 819 | static int scp_sftp_targetisdir, scp_sftp_donethistarget; |
| 820 | static int scp_sftp_preserve, scp_sftp_recursive; |
| 821 | static unsigned long scp_sftp_mtime, scp_sftp_atime; |
| 822 | static int scp_has_times; |
| 823 | static struct fxp_handle *scp_sftp_filehandle; |
| 824 | static uint64 scp_sftp_fileoffset; |
| 825 | |
| 826 | void scp_source_setup(char *target, int shouldbedir) |
| 827 | { |
| 828 | if (using_sftp) { |
| 829 | /* |
| 830 | * Find out whether the target filespec is in fact a |
| 831 | * directory. |
| 832 | */ |
| 833 | struct fxp_attrs attrs; |
| 834 | |
| 835 | if (!fxp_init()) { |
| 836 | tell_user(stderr, "unable to initialise SFTP: %s", fxp_error()); |
| 837 | errs++; |
| 838 | return; |
| 839 | } |
| 840 | |
| 841 | if (!fxp_stat(target, &attrs) || |
| 842 | !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) |
| 843 | scp_sftp_targetisdir = 0; |
| 844 | else |
| 845 | scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0; |
| 846 | |
| 847 | if (shouldbedir && !scp_sftp_targetisdir) { |
| 848 | bump("pscp: remote filespec %s: not a directory\n", target); |
| 849 | } |
| 850 | |
| 851 | scp_sftp_remotepath = dupstr(target); |
| 852 | |
| 853 | scp_has_times = 0; |
| 854 | } else { |
| 855 | (void) response(); |
| 856 | } |
| 857 | } |
| 858 | |
| 859 | int scp_send_errmsg(char *str) |
| 860 | { |
| 861 | if (using_sftp) { |
| 862 | /* do nothing; we never need to send our errors to the server */ |
| 863 | } else { |
| 864 | back->send(backhandle, "\001", 1);/* scp protocol error prefix */ |
| 865 | back->send(backhandle, str, strlen(str)); |
| 866 | } |
| 867 | return 0; /* can't fail */ |
| 868 | } |
| 869 | |
| 870 | int scp_send_filetimes(unsigned long mtime, unsigned long atime) |
| 871 | { |
| 872 | if (using_sftp) { |
| 873 | scp_sftp_mtime = mtime; |
| 874 | scp_sftp_atime = atime; |
| 875 | scp_has_times = 1; |
| 876 | return 0; |
| 877 | } else { |
| 878 | char buf[80]; |
| 879 | sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime); |
| 880 | back->send(backhandle, buf, strlen(buf)); |
| 881 | return response(); |
| 882 | } |
| 883 | } |
| 884 | |
| 885 | int scp_send_filename(char *name, unsigned long size, int modes) |
| 886 | { |
| 887 | if (using_sftp) { |
| 888 | char *fullname; |
| 889 | if (scp_sftp_targetisdir) { |
| 890 | fullname = dupcat(scp_sftp_remotepath, "/", name, NULL); |
| 891 | } else { |
| 892 | fullname = dupstr(scp_sftp_remotepath); |
| 893 | } |
| 894 | scp_sftp_filehandle = |
| 895 | fxp_open(fullname, SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC); |
| 896 | if (!scp_sftp_filehandle) { |
| 897 | tell_user(stderr, "pscp: unable to open %s: %s", |
| 898 | fullname, fxp_error()); |
| 899 | errs++; |
| 900 | return 1; |
| 901 | } |
| 902 | scp_sftp_fileoffset = uint64_make(0, 0); |
| 903 | sfree(fullname); |
| 904 | return 0; |
| 905 | } else { |
| 906 | char buf[40]; |
| 907 | sprintf(buf, "C%04o %lu ", modes, size); |
| 908 | back->send(backhandle, buf, strlen(buf)); |
| 909 | back->send(backhandle, name, strlen(name)); |
| 910 | back->send(backhandle, "\n", 1); |
| 911 | return response(); |
| 912 | } |
| 913 | } |
| 914 | |
| 915 | int scp_send_filedata(char *data, int len) |
| 916 | { |
| 917 | if (using_sftp) { |
| 918 | if (!scp_sftp_filehandle) { |
| 919 | return 1; |
| 920 | } |
| 921 | if (!fxp_write(scp_sftp_filehandle, data, scp_sftp_fileoffset, len)) { |
| 922 | tell_user(stderr, "error while writing: %s\n", fxp_error()); |
| 923 | errs++; |
| 924 | return 1; |
| 925 | } |
| 926 | scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, len); |
| 927 | return 0; |
| 928 | } else { |
| 929 | int bufsize = back->send(backhandle, data, len); |
| 930 | |
| 931 | /* |
| 932 | * If the network transfer is backing up - that is, the |
| 933 | * remote site is not accepting data as fast as we can |
| 934 | * produce it - then we must loop on network events until |
| 935 | * we have space in the buffer again. |
| 936 | */ |
| 937 | while (bufsize > MAX_SCP_BUFSIZE) { |
| 938 | if (!scp_process_network_event()) |
| 939 | return 1; |
| 940 | bufsize = back->sendbuffer(backhandle); |
| 941 | } |
| 942 | |
| 943 | return 0; |
| 944 | } |
| 945 | } |
| 946 | |
| 947 | int scp_send_finish(void) |
| 948 | { |
| 949 | if (using_sftp) { |
| 950 | struct fxp_attrs attrs; |
| 951 | if (!scp_sftp_filehandle) { |
| 952 | return 1; |
| 953 | } |
| 954 | if (scp_has_times) { |
| 955 | attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME; |
| 956 | attrs.atime = scp_sftp_atime; |
| 957 | attrs.mtime = scp_sftp_mtime; |
| 958 | if (!fxp_fsetstat(scp_sftp_filehandle, attrs)) { |
| 959 | tell_user(stderr, "unable to set file times: %s\n", fxp_error()); |
| 960 | errs++; |
| 961 | } |
| 962 | } |
| 963 | fxp_close(scp_sftp_filehandle); |
| 964 | scp_has_times = 0; |
| 965 | return 0; |
| 966 | } else { |
| 967 | back->send(backhandle, "", 1); |
| 968 | return response(); |
| 969 | } |
| 970 | } |
| 971 | |
| 972 | char *scp_save_remotepath(void) |
| 973 | { |
| 974 | if (using_sftp) |
| 975 | return scp_sftp_remotepath; |
| 976 | else |
| 977 | return NULL; |
| 978 | } |
| 979 | |
| 980 | void scp_restore_remotepath(char *data) |
| 981 | { |
| 982 | if (using_sftp) |
| 983 | scp_sftp_remotepath = data; |
| 984 | } |
| 985 | |
| 986 | int scp_send_dirname(char *name, int modes) |
| 987 | { |
| 988 | if (using_sftp) { |
| 989 | char *fullname; |
| 990 | char const *err; |
| 991 | struct fxp_attrs attrs; |
| 992 | if (scp_sftp_targetisdir) { |
| 993 | fullname = dupcat(scp_sftp_remotepath, "/", name, NULL); |
| 994 | } else { |
| 995 | fullname = dupstr(scp_sftp_remotepath); |
| 996 | } |
| 997 | |
| 998 | /* |
| 999 | * We don't worry about whether we managed to create the |
| 1000 | * directory, because if it exists already it's OK just to |
| 1001 | * use it. Instead, we will stat it afterwards, and if it |
| 1002 | * exists and is a directory we will assume we were either |
| 1003 | * successful or it didn't matter. |
| 1004 | */ |
| 1005 | if (!fxp_mkdir(fullname)) |
| 1006 | err = fxp_error(); |
| 1007 | else |
| 1008 | err = "server reported no error"; |
| 1009 | if (!fxp_stat(fullname, &attrs) || |
| 1010 | !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) || |
| 1011 | !(attrs.permissions & 0040000)) { |
| 1012 | tell_user(stderr, "unable to create directory %s: %s", |
| 1013 | fullname, err); |
| 1014 | errs++; |
| 1015 | return 1; |
| 1016 | } |
| 1017 | |
| 1018 | scp_sftp_remotepath = fullname; |
| 1019 | |
| 1020 | return 0; |
| 1021 | } else { |
| 1022 | char buf[40]; |
| 1023 | sprintf(buf, "D%04o 0 ", modes); |
| 1024 | back->send(backhandle, buf, strlen(buf)); |
| 1025 | back->send(backhandle, name, strlen(name)); |
| 1026 | back->send(backhandle, "\n", 1); |
| 1027 | return response(); |
| 1028 | } |
| 1029 | } |
| 1030 | |
| 1031 | int scp_send_enddir(void) |
| 1032 | { |
| 1033 | if (using_sftp) { |
| 1034 | sfree(scp_sftp_remotepath); |
| 1035 | return 0; |
| 1036 | } else { |
| 1037 | back->send(backhandle, "E\n", 2); |
| 1038 | return response(); |
| 1039 | } |
| 1040 | } |
| 1041 | |
| 1042 | /* |
| 1043 | * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init. |
| 1044 | * That's bad. The difference is that scp_sink_setup is called once |
| 1045 | * right at the start, whereas scp_sink_init is called to |
| 1046 | * initialise every level of recursion in the protocol. |
| 1047 | */ |
| 1048 | int scp_sink_setup(char *source, int preserve, int recursive) |
| 1049 | { |
| 1050 | if (using_sftp) { |
| 1051 | char *newsource; |
| 1052 | |
| 1053 | if (!fxp_init()) { |
| 1054 | tell_user(stderr, "unable to initialise SFTP: %s", fxp_error()); |
| 1055 | errs++; |
| 1056 | return 1; |
| 1057 | } |
| 1058 | /* |
| 1059 | * It's possible that the source string we've been given |
| 1060 | * contains a wildcard. If so, we must split the directory |
| 1061 | * away from the wildcard itself (throwing an error if any |
| 1062 | * wildcardness comes before the final slash) and arrange |
| 1063 | * things so that a dirstack entry will be set up. |
| 1064 | */ |
| 1065 | newsource = smalloc(1+strlen(source)); |
| 1066 | if (!wc_unescape(newsource, source)) { |
| 1067 | /* Yes, here we go; it's a wildcard. Bah. */ |
| 1068 | char *dupsource, *lastpart, *dirpart, *wildcard; |
| 1069 | dupsource = dupstr(source); |
| 1070 | lastpart = stripslashes(dupsource, 0); |
| 1071 | wildcard = dupstr(lastpart); |
| 1072 | *lastpart = '\0'; |
| 1073 | if (*dupsource && dupsource[1]) { |
| 1074 | /* |
| 1075 | * The remains of dupsource are at least two |
| 1076 | * characters long, meaning the pathname wasn't |
| 1077 | * empty or just `/'. Hence, we remove the trailing |
| 1078 | * slash. |
| 1079 | */ |
| 1080 | lastpart[-1] = '\0'; |
| 1081 | } else if (!*dupsource) { |
| 1082 | /* |
| 1083 | * The remains of dupsource are _empty_ - the whole |
| 1084 | * pathname was a wildcard. Hence we need to |
| 1085 | * replace it with ".". |
| 1086 | */ |
| 1087 | sfree(dupsource); |
| 1088 | dupsource = dupstr("."); |
| 1089 | } |
| 1090 | |
| 1091 | /* |
| 1092 | * Now we have separated our string into dupsource (the |
| 1093 | * directory part) and wildcard. Both of these will |
| 1094 | * need freeing at some point. Next step is to remove |
| 1095 | * wildcard escapes from the directory part, throwing |
| 1096 | * an error if it contains a real wildcard. |
| 1097 | */ |
| 1098 | dirpart = smalloc(1+strlen(dupsource)); |
| 1099 | if (!wc_unescape(dirpart, dupsource)) { |
| 1100 | tell_user(stderr, "%s: multiple-level wildcards unsupported", |
| 1101 | source); |
| 1102 | errs++; |
| 1103 | sfree(dirpart); |
| 1104 | sfree(wildcard); |
| 1105 | sfree(dupsource); |
| 1106 | return 1; |
| 1107 | } |
| 1108 | |
| 1109 | /* |
| 1110 | * Now we have dirpart (unescaped, ie a valid remote |
| 1111 | * path), and wildcard (a wildcard). This will be |
| 1112 | * sufficient to arrange a dirstack entry. |
| 1113 | */ |
| 1114 | scp_sftp_remotepath = dirpart; |
| 1115 | scp_sftp_wildcard = wildcard; |
| 1116 | sfree(dupsource); |
| 1117 | } else { |
| 1118 | scp_sftp_remotepath = newsource; |
| 1119 | scp_sftp_wildcard = NULL; |
| 1120 | } |
| 1121 | scp_sftp_preserve = preserve; |
| 1122 | scp_sftp_recursive = recursive; |
| 1123 | scp_sftp_donethistarget = 0; |
| 1124 | scp_sftp_dirstack_head = NULL; |
| 1125 | } |
| 1126 | return 0; |
| 1127 | } |
| 1128 | |
| 1129 | int scp_sink_init(void) |
| 1130 | { |
| 1131 | if (!using_sftp) { |
| 1132 | back->send(backhandle, "", 1); |
| 1133 | } |
| 1134 | return 0; |
| 1135 | } |
| 1136 | |
| 1137 | #define SCP_SINK_FILE 1 |
| 1138 | #define SCP_SINK_DIR 2 |
| 1139 | #define SCP_SINK_ENDDIR 3 |
| 1140 | #define SCP_SINK_RETRY 4 /* not an action; just try again */ |
| 1141 | struct scp_sink_action { |
| 1142 | int action; /* FILE, DIR, ENDDIR */ |
| 1143 | char *buf; /* will need freeing after use */ |
| 1144 | char *name; /* filename or dirname (not ENDDIR) */ |
| 1145 | int mode; /* access mode (not ENDDIR) */ |
| 1146 | unsigned long size; /* file size (not ENDDIR) */ |
| 1147 | int settime; /* 1 if atime and mtime are filled */ |
| 1148 | unsigned long atime, mtime; /* access times for the file */ |
| 1149 | }; |
| 1150 | |
| 1151 | int scp_get_sink_action(struct scp_sink_action *act) |
| 1152 | { |
| 1153 | if (using_sftp) { |
| 1154 | char *fname; |
| 1155 | int must_free_fname; |
| 1156 | struct fxp_attrs attrs; |
| 1157 | int ret; |
| 1158 | |
| 1159 | if (!scp_sftp_dirstack_head) { |
| 1160 | if (!scp_sftp_donethistarget) { |
| 1161 | /* |
| 1162 | * Simple case: we are only dealing with one file. |
| 1163 | */ |
| 1164 | fname = scp_sftp_remotepath; |
| 1165 | must_free_fname = 0; |
| 1166 | scp_sftp_donethistarget = 1; |
| 1167 | } else { |
| 1168 | /* |
| 1169 | * Even simpler case: one file _which we've done_. |
| 1170 | * Return 1 (finished). |
| 1171 | */ |
| 1172 | return 1; |
| 1173 | } |
| 1174 | } else { |
| 1175 | /* |
| 1176 | * We're now in the middle of stepping through a list |
| 1177 | * of names returned from fxp_readdir(); so let's carry |
| 1178 | * on. |
| 1179 | */ |
| 1180 | struct scp_sftp_dirstack *head = scp_sftp_dirstack_head; |
| 1181 | while (head->namepos < head->namelen && |
| 1182 | (is_dots(head->names[head->namepos].filename) || |
| 1183 | (head->wildcard && |
| 1184 | !wc_match(head->wildcard, |
| 1185 | head->names[head->namepos].filename)))) |
| 1186 | head->namepos++; /* skip . and .. */ |
| 1187 | if (head->namepos < head->namelen) { |
| 1188 | head->matched_something = 1; |
| 1189 | fname = dupcat(head->dirpath, "/", |
| 1190 | head->names[head->namepos++].filename, |
| 1191 | NULL); |
| 1192 | must_free_fname = 1; |
| 1193 | } else { |
| 1194 | /* |
| 1195 | * We've come to the end of the list; pop it off |
| 1196 | * the stack and return an ENDDIR action (or RETRY |
| 1197 | * if this was a wildcard match). |
| 1198 | */ |
| 1199 | if (head->wildcard) { |
| 1200 | act->action = SCP_SINK_RETRY; |
| 1201 | if (!head->matched_something) { |
| 1202 | tell_user(stderr, "pscp: wildcard '%s' matched " |
| 1203 | "no files", head->wildcard); |
| 1204 | errs++; |
| 1205 | } |
| 1206 | sfree(head->wildcard); |
| 1207 | |
| 1208 | } else { |
| 1209 | act->action = SCP_SINK_ENDDIR; |
| 1210 | } |
| 1211 | |
| 1212 | sfree(head->dirpath); |
| 1213 | sfree(head->names); |
| 1214 | scp_sftp_dirstack_head = head->next; |
| 1215 | sfree(head); |
| 1216 | |
| 1217 | return 0; |
| 1218 | } |
| 1219 | } |
| 1220 | |
| 1221 | /* |
| 1222 | * Now we have a filename. Stat it, and see if it's a file |
| 1223 | * or a directory. |
| 1224 | */ |
| 1225 | ret = fxp_stat(fname, &attrs); |
| 1226 | if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) { |
| 1227 | tell_user(stderr, "unable to identify %s: %s", fname, |
| 1228 | ret ? "file type not supplied" : fxp_error()); |
| 1229 | errs++; |
| 1230 | return 1; |
| 1231 | } |
| 1232 | |
| 1233 | if (attrs.permissions & 0040000) { |
| 1234 | struct scp_sftp_dirstack *newitem; |
| 1235 | struct fxp_handle *dirhandle; |
| 1236 | int nnames, namesize; |
| 1237 | struct fxp_name *ournames; |
| 1238 | struct fxp_names *names; |
| 1239 | |
| 1240 | /* |
| 1241 | * It's a directory. If we're not in recursive mode, |
| 1242 | * this merits a complaint (which is fatal if the name |
| 1243 | * was specified directly, but not if it was matched by |
| 1244 | * a wildcard). |
| 1245 | * |
| 1246 | * We skip this complaint completely if |
| 1247 | * scp_sftp_wildcard is set, because that's an |
| 1248 | * indication that we're not actually supposed to |
| 1249 | * _recursively_ transfer the dir, just scan it for |
| 1250 | * things matching the wildcard. |
| 1251 | */ |
| 1252 | if (!scp_sftp_recursive && !scp_sftp_wildcard) { |
| 1253 | tell_user(stderr, "pscp: %s: is a directory", fname); |
| 1254 | errs++; |
| 1255 | if (must_free_fname) sfree(fname); |
| 1256 | if (scp_sftp_dirstack_head) { |
| 1257 | act->action = SCP_SINK_RETRY; |
| 1258 | return 0; |
| 1259 | } else { |
| 1260 | return 1; |
| 1261 | } |
| 1262 | } |
| 1263 | |
| 1264 | /* |
| 1265 | * Otherwise, the fun begins. We must fxp_opendir() the |
| 1266 | * directory, slurp the filenames into memory, return |
| 1267 | * SCP_SINK_DIR (unless this is a wildcard match), and |
| 1268 | * set targetisdir. The next time we're called, we will |
| 1269 | * run through the list of filenames one by one, |
| 1270 | * matching them against a wildcard if present. |
| 1271 | * |
| 1272 | * If targetisdir is _already_ set (meaning we're |
| 1273 | * already in the middle of going through another such |
| 1274 | * list), we must push the other (target,namelist) pair |
| 1275 | * on a stack. |
| 1276 | */ |
| 1277 | dirhandle = fxp_opendir(fname); |
| 1278 | if (!dirhandle) { |
| 1279 | tell_user(stderr, "scp: unable to open directory %s: %s", |
| 1280 | fname, fxp_error()); |
| 1281 | if (must_free_fname) sfree(fname); |
| 1282 | errs++; |
| 1283 | return 1; |
| 1284 | } |
| 1285 | nnames = namesize = 0; |
| 1286 | ournames = NULL; |
| 1287 | while (1) { |
| 1288 | int i; |
| 1289 | |
| 1290 | names = fxp_readdir(dirhandle); |
| 1291 | if (names == NULL) { |
| 1292 | if (fxp_error_type() == SSH_FX_EOF) |
| 1293 | break; |
| 1294 | tell_user(stderr, "scp: reading directory %s: %s\n", |
| 1295 | fname, fxp_error()); |
| 1296 | if (must_free_fname) sfree(fname); |
| 1297 | sfree(ournames); |
| 1298 | errs++; |
| 1299 | return 1; |
| 1300 | } |
| 1301 | if (names->nnames == 0) { |
| 1302 | fxp_free_names(names); |
| 1303 | break; |
| 1304 | } |
| 1305 | if (nnames + names->nnames >= namesize) { |
| 1306 | namesize += names->nnames + 128; |
| 1307 | ournames = |
| 1308 | srealloc(ournames, namesize * sizeof(*ournames)); |
| 1309 | } |
| 1310 | for (i = 0; i < names->nnames; i++) |
| 1311 | ournames[nnames++] = names->names[i]; |
| 1312 | names->nnames = 0; /* prevent free_names */ |
| 1313 | fxp_free_names(names); |
| 1314 | } |
| 1315 | fxp_close(dirhandle); |
| 1316 | |
| 1317 | newitem = smalloc(sizeof(struct scp_sftp_dirstack)); |
| 1318 | newitem->next = scp_sftp_dirstack_head; |
| 1319 | newitem->names = ournames; |
| 1320 | newitem->namepos = 0; |
| 1321 | newitem->namelen = nnames; |
| 1322 | if (must_free_fname) |
| 1323 | newitem->dirpath = fname; |
| 1324 | else |
| 1325 | newitem->dirpath = dupstr(fname); |
| 1326 | if (scp_sftp_wildcard) { |
| 1327 | newitem->wildcard = scp_sftp_wildcard; |
| 1328 | newitem->matched_something = 0; |
| 1329 | scp_sftp_wildcard = NULL; |
| 1330 | } else { |
| 1331 | newitem->wildcard = NULL; |
| 1332 | } |
| 1333 | scp_sftp_dirstack_head = newitem; |
| 1334 | |
| 1335 | if (newitem->wildcard) { |
| 1336 | act->action = SCP_SINK_RETRY; |
| 1337 | } else { |
| 1338 | act->action = SCP_SINK_DIR; |
| 1339 | act->buf = dupstr(stripslashes(fname, 0)); |
| 1340 | act->name = act->buf; |
| 1341 | act->size = 0; /* duhh, it's a directory */ |
| 1342 | act->mode = 07777 & attrs.permissions; |
| 1343 | if (scp_sftp_preserve && |
| 1344 | (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) { |
| 1345 | act->atime = attrs.atime; |
| 1346 | act->mtime = attrs.mtime; |
| 1347 | act->settime = 1; |
| 1348 | } else |
| 1349 | act->settime = 0; |
| 1350 | } |
| 1351 | return 0; |
| 1352 | |
| 1353 | } else { |
| 1354 | /* |
| 1355 | * It's a file. Return SCP_SINK_FILE. |
| 1356 | */ |
| 1357 | act->action = SCP_SINK_FILE; |
| 1358 | act->buf = dupstr(stripslashes(fname, 0)); |
| 1359 | act->name = act->buf; |
| 1360 | if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) { |
| 1361 | if (uint64_compare(attrs.size, |
| 1362 | uint64_make(0, ULONG_MAX)) > 0) { |
| 1363 | act->size = ULONG_MAX; /* *boggle* */ |
| 1364 | } else |
| 1365 | act->size = attrs.size.lo; |
| 1366 | } else |
| 1367 | act->size = ULONG_MAX; /* no idea */ |
| 1368 | act->mode = 07777 & attrs.permissions; |
| 1369 | if (scp_sftp_preserve && |
| 1370 | (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) { |
| 1371 | act->atime = attrs.atime; |
| 1372 | act->mtime = attrs.mtime; |
| 1373 | act->settime = 1; |
| 1374 | } else |
| 1375 | act->settime = 0; |
| 1376 | if (must_free_fname) |
| 1377 | scp_sftp_currentname = fname; |
| 1378 | else |
| 1379 | scp_sftp_currentname = dupstr(fname); |
| 1380 | return 0; |
| 1381 | } |
| 1382 | |
| 1383 | } else { |
| 1384 | int done = 0; |
| 1385 | int i, bufsize; |
| 1386 | int action; |
| 1387 | char ch; |
| 1388 | |
| 1389 | act->settime = 0; |
| 1390 | act->buf = NULL; |
| 1391 | bufsize = 0; |
| 1392 | |
| 1393 | while (!done) { |
| 1394 | if (ssh_scp_recv(&ch, 1) <= 0) |
| 1395 | return 1; |
| 1396 | if (ch == '\n') |
| 1397 | bump("Protocol error: Unexpected newline"); |
| 1398 | i = 0; |
| 1399 | action = ch; |
| 1400 | do { |
| 1401 | if (ssh_scp_recv(&ch, 1) <= 0) |
| 1402 | bump("Lost connection"); |
| 1403 | if (i >= bufsize) { |
| 1404 | bufsize = i + 128; |
| 1405 | act->buf = srealloc(act->buf, bufsize); |
| 1406 | } |
| 1407 | act->buf[i++] = ch; |
| 1408 | } while (ch != '\n'); |
| 1409 | act->buf[i - 1] = '\0'; |
| 1410 | switch (action) { |
| 1411 | case '\01': /* error */ |
| 1412 | tell_user(stderr, "%s\n", act->buf); |
| 1413 | errs++; |
| 1414 | continue; /* go round again */ |
| 1415 | case '\02': /* fatal error */ |
| 1416 | bump("%s", act->buf); |
| 1417 | case 'E': |
| 1418 | back->send(backhandle, "", 1); |
| 1419 | act->action = SCP_SINK_ENDDIR; |
| 1420 | return 0; |
| 1421 | case 'T': |
| 1422 | if (sscanf(act->buf, "%ld %*d %ld %*d", |
| 1423 | &act->mtime, &act->atime) == 2) { |
| 1424 | act->settime = 1; |
| 1425 | back->send(backhandle, "", 1); |
| 1426 | continue; /* go round again */ |
| 1427 | } |
| 1428 | bump("Protocol error: Illegal time format"); |
| 1429 | case 'C': |
| 1430 | case 'D': |
| 1431 | act->action = (action == 'C' ? SCP_SINK_FILE : SCP_SINK_DIR); |
| 1432 | break; |
| 1433 | default: |
| 1434 | bump("Protocol error: Expected control record"); |
| 1435 | } |
| 1436 | /* |
| 1437 | * We will go round this loop only once, unless we hit |
| 1438 | * `continue' above. |
| 1439 | */ |
| 1440 | done = 1; |
| 1441 | } |
| 1442 | |
| 1443 | /* |
| 1444 | * If we get here, we must have seen SCP_SINK_FILE or |
| 1445 | * SCP_SINK_DIR. |
| 1446 | */ |
| 1447 | if (sscanf(act->buf, "%o %lu %n", &act->mode, &act->size, &i) != 2) |
| 1448 | bump("Protocol error: Illegal file descriptor format"); |
| 1449 | act->name = act->buf + i; |
| 1450 | return 0; |
| 1451 | } |
| 1452 | } |
| 1453 | |
| 1454 | int scp_accept_filexfer(void) |
| 1455 | { |
| 1456 | if (using_sftp) { |
| 1457 | scp_sftp_filehandle = |
| 1458 | fxp_open(scp_sftp_currentname, SSH_FXF_READ); |
| 1459 | if (!scp_sftp_filehandle) { |
| 1460 | tell_user(stderr, "pscp: unable to open %s: %s", |
| 1461 | scp_sftp_currentname, fxp_error()); |
| 1462 | errs++; |
| 1463 | return 1; |
| 1464 | } |
| 1465 | scp_sftp_fileoffset = uint64_make(0, 0); |
| 1466 | sfree(scp_sftp_currentname); |
| 1467 | return 0; |
| 1468 | } else { |
| 1469 | back->send(backhandle, "", 1); |
| 1470 | return 0; /* can't fail */ |
| 1471 | } |
| 1472 | } |
| 1473 | |
| 1474 | int scp_recv_filedata(char *data, int len) |
| 1475 | { |
| 1476 | if (using_sftp) { |
| 1477 | int actuallen = fxp_read(scp_sftp_filehandle, data, |
| 1478 | scp_sftp_fileoffset, len); |
| 1479 | if (actuallen == -1 && fxp_error_type() != SSH_FX_EOF) { |
| 1480 | tell_user(stderr, "pscp: error while reading: %s", fxp_error()); |
| 1481 | errs++; |
| 1482 | return -1; |
| 1483 | } |
| 1484 | if (actuallen < 0) |
| 1485 | actuallen = 0; |
| 1486 | |
| 1487 | scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, actuallen); |
| 1488 | |
| 1489 | return actuallen; |
| 1490 | } else { |
| 1491 | return ssh_scp_recv(data, len); |
| 1492 | } |
| 1493 | } |
| 1494 | |
| 1495 | int scp_finish_filerecv(void) |
| 1496 | { |
| 1497 | if (using_sftp) { |
| 1498 | fxp_close(scp_sftp_filehandle); |
| 1499 | return 0; |
| 1500 | } else { |
| 1501 | back->send(backhandle, "", 1); |
| 1502 | return response(); |
| 1503 | } |
| 1504 | } |
| 1505 | |
| 1506 | /* ---------------------------------------------------------------------- |
| 1507 | * Send an error message to the other side and to the screen. |
| 1508 | * Increment error counter. |
| 1509 | */ |
| 1510 | static void run_err(const char *fmt, ...) |
| 1511 | { |
| 1512 | char *str, *str2; |
| 1513 | va_list ap; |
| 1514 | va_start(ap, fmt); |
| 1515 | errs++; |
| 1516 | str = dupvprintf(fmt, ap); |
| 1517 | str2 = dupcat("scp: ", str, "\n", NULL); |
| 1518 | sfree(str); |
| 1519 | scp_send_errmsg(str2); |
| 1520 | tell_user(stderr, "%s", str2); |
| 1521 | va_end(ap); |
| 1522 | sfree(str2); |
| 1523 | } |
| 1524 | |
| 1525 | /* |
| 1526 | * Execute the source part of the SCP protocol. |
| 1527 | */ |
| 1528 | static void source(char *src) |
| 1529 | { |
| 1530 | unsigned long size; |
| 1531 | char *last; |
| 1532 | HANDLE f; |
| 1533 | DWORD attr; |
| 1534 | unsigned long i; |
| 1535 | unsigned long stat_bytes; |
| 1536 | time_t stat_starttime, stat_lasttime; |
| 1537 | |
| 1538 | attr = GetFileAttributes(src); |
| 1539 | if (attr == (DWORD) - 1) { |
| 1540 | run_err("%s: No such file or directory", src); |
| 1541 | return; |
| 1542 | } |
| 1543 | |
| 1544 | if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) { |
| 1545 | if (recursive) { |
| 1546 | /* |
| 1547 | * Avoid . and .. directories. |
| 1548 | */ |
| 1549 | char *p; |
| 1550 | p = strrchr(src, '/'); |
| 1551 | if (!p) |
| 1552 | p = strrchr(src, '\\'); |
| 1553 | if (!p) |
| 1554 | p = src; |
| 1555 | else |
| 1556 | p++; |
| 1557 | if (!strcmp(p, ".") || !strcmp(p, "..")) |
| 1558 | /* skip . and .. */ ; |
| 1559 | else |
| 1560 | rsource(src); |
| 1561 | } else { |
| 1562 | run_err("%s: not a regular file", src); |
| 1563 | } |
| 1564 | return; |
| 1565 | } |
| 1566 | |
| 1567 | if ((last = strrchr(src, '/')) == NULL) |
| 1568 | last = src; |
| 1569 | else |
| 1570 | last++; |
| 1571 | if (strrchr(last, '\\') != NULL) |
| 1572 | last = strrchr(last, '\\') + 1; |
| 1573 | if (last == src && strchr(src, ':') != NULL) |
| 1574 | last = strchr(src, ':') + 1; |
| 1575 | |
| 1576 | f = CreateFile(src, GENERIC_READ, FILE_SHARE_READ, NULL, |
| 1577 | OPEN_EXISTING, 0, 0); |
| 1578 | if (f == INVALID_HANDLE_VALUE) { |
| 1579 | run_err("%s: Cannot open file", src); |
| 1580 | return; |
| 1581 | } |
| 1582 | |
| 1583 | if (preserve) { |
| 1584 | FILETIME actime, wrtime; |
| 1585 | unsigned long mtime, atime; |
| 1586 | GetFileTime(f, NULL, &actime, &wrtime); |
| 1587 | TIME_WIN_TO_POSIX(actime, atime); |
| 1588 | TIME_WIN_TO_POSIX(wrtime, mtime); |
| 1589 | if (scp_send_filetimes(mtime, atime)) |
| 1590 | return; |
| 1591 | } |
| 1592 | |
| 1593 | size = GetFileSize(f, NULL); |
| 1594 | if (verbose) |
| 1595 | tell_user(stderr, "Sending file %s, size=%lu", last, size); |
| 1596 | if (scp_send_filename(last, size, 0644)) |
| 1597 | return; |
| 1598 | |
| 1599 | stat_bytes = 0; |
| 1600 | stat_starttime = time(NULL); |
| 1601 | stat_lasttime = 0; |
| 1602 | |
| 1603 | for (i = 0; i < size; i += 4096) { |
| 1604 | char transbuf[4096]; |
| 1605 | DWORD j, k = 4096; |
| 1606 | |
| 1607 | if (i + k > size) |
| 1608 | k = size - i; |
| 1609 | if (!ReadFile(f, transbuf, k, &j, NULL) || j != k) { |
| 1610 | if (statistics) |
| 1611 | printf("\n"); |
| 1612 | bump("%s: Read error", src); |
| 1613 | } |
| 1614 | if (scp_send_filedata(transbuf, k)) |
| 1615 | bump("%s: Network error occurred", src); |
| 1616 | |
| 1617 | if (statistics) { |
| 1618 | stat_bytes += k; |
| 1619 | if (time(NULL) != stat_lasttime || i + k == size) { |
| 1620 | stat_lasttime = time(NULL); |
| 1621 | print_stats(last, size, stat_bytes, |
| 1622 | stat_starttime, stat_lasttime); |
| 1623 | } |
| 1624 | } |
| 1625 | |
| 1626 | } |
| 1627 | CloseHandle(f); |
| 1628 | |
| 1629 | (void) scp_send_finish(); |
| 1630 | } |
| 1631 | |
| 1632 | /* |
| 1633 | * Recursively send the contents of a directory. |
| 1634 | */ |
| 1635 | static void rsource(char *src) |
| 1636 | { |
| 1637 | char *last, *findfile; |
| 1638 | char *save_target; |
| 1639 | HANDLE dir; |
| 1640 | WIN32_FIND_DATA fdat; |
| 1641 | int ok; |
| 1642 | |
| 1643 | if ((last = strrchr(src, '/')) == NULL) |
| 1644 | last = src; |
| 1645 | else |
| 1646 | last++; |
| 1647 | if (strrchr(last, '\\') != NULL) |
| 1648 | last = strrchr(last, '\\') + 1; |
| 1649 | if (last == src && strchr(src, ':') != NULL) |
| 1650 | last = strchr(src, ':') + 1; |
| 1651 | |
| 1652 | /* maybe send filetime */ |
| 1653 | |
| 1654 | save_target = scp_save_remotepath(); |
| 1655 | |
| 1656 | if (verbose) |
| 1657 | tell_user(stderr, "Entering directory: %s", last); |
| 1658 | if (scp_send_dirname(last, 0755)) |
| 1659 | return; |
| 1660 | |
| 1661 | findfile = dupcat(src, "/*", NULL); |
| 1662 | dir = FindFirstFile(findfile, &fdat); |
| 1663 | ok = (dir != INVALID_HANDLE_VALUE); |
| 1664 | while (ok) { |
| 1665 | if (strcmp(fdat.cFileName, ".") == 0 || |
| 1666 | strcmp(fdat.cFileName, "..") == 0) { |
| 1667 | /* ignore . and .. */ |
| 1668 | } else { |
| 1669 | char *foundfile = dupcat(src, "/", fdat.cFileName, NULL); |
| 1670 | source(foundfile); |
| 1671 | sfree(foundfile); |
| 1672 | } |
| 1673 | ok = FindNextFile(dir, &fdat); |
| 1674 | } |
| 1675 | FindClose(dir); |
| 1676 | sfree(findfile); |
| 1677 | |
| 1678 | (void) scp_send_enddir(); |
| 1679 | |
| 1680 | scp_restore_remotepath(save_target); |
| 1681 | } |
| 1682 | |
| 1683 | /* |
| 1684 | * Execute the sink part of the SCP protocol. |
| 1685 | */ |
| 1686 | static void sink(char *targ, char *src) |
| 1687 | { |
| 1688 | char *destfname; |
| 1689 | int targisdir = 0; |
| 1690 | int exists; |
| 1691 | DWORD attr; |
| 1692 | HANDLE f; |
| 1693 | unsigned long received; |
| 1694 | int wrerror = 0; |
| 1695 | unsigned long stat_bytes; |
| 1696 | time_t stat_starttime, stat_lasttime; |
| 1697 | char *stat_name; |
| 1698 | |
| 1699 | attr = GetFileAttributes(targ); |
| 1700 | if (attr != (DWORD) - 1 && (attr & FILE_ATTRIBUTE_DIRECTORY) != 0) |
| 1701 | targisdir = 1; |
| 1702 | |
| 1703 | if (targetshouldbedirectory && !targisdir) |
| 1704 | bump("%s: Not a directory", targ); |
| 1705 | |
| 1706 | scp_sink_init(); |
| 1707 | while (1) { |
| 1708 | struct scp_sink_action act; |
| 1709 | if (scp_get_sink_action(&act)) |
| 1710 | return; |
| 1711 | |
| 1712 | if (act.action == SCP_SINK_ENDDIR) |
| 1713 | return; |
| 1714 | |
| 1715 | if (act.action == SCP_SINK_RETRY) |
| 1716 | continue; |
| 1717 | |
| 1718 | if (targisdir) { |
| 1719 | /* |
| 1720 | * Prevent the remote side from maliciously writing to |
| 1721 | * files outside the target area by sending a filename |
| 1722 | * containing `../'. In fact, it shouldn't be sending |
| 1723 | * filenames with any slashes or colons in at all; so |
| 1724 | * we'll find the last slash, backslash or colon in the |
| 1725 | * filename and use only the part after that. (And |
| 1726 | * warn!) |
| 1727 | * |
| 1728 | * In addition, we also ensure here that if we're |
| 1729 | * copying a single file and the target is a directory |
| 1730 | * (common usage: `pscp host:filename .') the remote |
| 1731 | * can't send us a _different_ file name. We can |
| 1732 | * distinguish this case because `src' will be non-NULL |
| 1733 | * and the last component of that will fail to match |
| 1734 | * (the last component of) the name sent. |
| 1735 | * |
| 1736 | * Well, not always; if `src' is a wildcard, we do |
| 1737 | * expect to get back filenames that don't correspond |
| 1738 | * exactly to it. Ideally in this case, we would like |
| 1739 | * to ensure that the returned filename actually |
| 1740 | * matches the wildcard pattern - but one of SCP's |
| 1741 | * protocol infelicities is that wildcard matching is |
| 1742 | * done at the server end _by the server's rules_ and |
| 1743 | * so in general this is infeasible. Hence, we only |
| 1744 | * accept filenames that don't correspond to `src' if |
| 1745 | * unsafe mode is enabled or we are using SFTP (which |
| 1746 | * resolves remote wildcards on the client side and can |
| 1747 | * be trusted). |
| 1748 | */ |
| 1749 | char *striptarget, *stripsrc; |
| 1750 | |
| 1751 | striptarget = stripslashes(act.name, 1); |
| 1752 | if (striptarget != act.name) { |
| 1753 | tell_user(stderr, "warning: remote host sent a compound" |
| 1754 | " pathname '%s'", act.name); |
| 1755 | tell_user(stderr, " renaming local file to '%s'", |
| 1756 | striptarget); |
| 1757 | } |
| 1758 | |
| 1759 | /* |
| 1760 | * Also check to see if the target filename is '.' or |
| 1761 | * '..', or indeed '...' and so on because Windows |
| 1762 | * appears to interpret those like '..'. |
| 1763 | */ |
| 1764 | if (is_dots(striptarget)) { |
| 1765 | bump("security violation: remote host attempted to write to" |
| 1766 | " a '.' or '..' path!"); |
| 1767 | } |
| 1768 | |
| 1769 | if (src) { |
| 1770 | stripsrc = stripslashes(src, 1); |
| 1771 | if (strcmp(striptarget, stripsrc) && |
| 1772 | !using_sftp && !scp_unsafe_mode) { |
| 1773 | tell_user(stderr, "warning: remote host tried to write " |
| 1774 | "to a file called '%s'", striptarget); |
| 1775 | tell_user(stderr, " when we requested a file " |
| 1776 | "called '%s'.", stripsrc); |
| 1777 | tell_user(stderr, " If this is a wildcard, " |
| 1778 | "consider upgrading to SSH 2 or using"); |
| 1779 | tell_user(stderr, " the '-unsafe' option. Renaming" |
| 1780 | " of this file has been disallowed."); |
| 1781 | /* Override the name the server provided with our own. */ |
| 1782 | striptarget = stripsrc; |
| 1783 | } |
| 1784 | } |
| 1785 | |
| 1786 | if (targ[0] != '\0') |
| 1787 | destfname = dupcat(targ, "\\", striptarget, NULL); |
| 1788 | else |
| 1789 | destfname = dupstr(striptarget); |
| 1790 | } else { |
| 1791 | /* |
| 1792 | * In this branch of the if, the target area is a |
| 1793 | * single file with an explicitly specified name in any |
| 1794 | * case, so there's no danger. |
| 1795 | */ |
| 1796 | destfname = dupstr(targ); |
| 1797 | } |
| 1798 | attr = GetFileAttributes(destfname); |
| 1799 | exists = (attr != (DWORD) - 1); |
| 1800 | |
| 1801 | if (act.action == SCP_SINK_DIR) { |
| 1802 | if (exists && (attr & FILE_ATTRIBUTE_DIRECTORY) == 0) { |
| 1803 | run_err("%s: Not a directory", destfname); |
| 1804 | continue; |
| 1805 | } |
| 1806 | if (!exists) { |
| 1807 | if (!CreateDirectory(destfname, NULL)) { |
| 1808 | run_err("%s: Cannot create directory", destfname); |
| 1809 | continue; |
| 1810 | } |
| 1811 | } |
| 1812 | sink(destfname, NULL); |
| 1813 | /* can we set the timestamp for directories ? */ |
| 1814 | continue; |
| 1815 | } |
| 1816 | |
| 1817 | f = CreateFile(destfname, GENERIC_WRITE, 0, NULL, |
| 1818 | CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0); |
| 1819 | if (f == INVALID_HANDLE_VALUE) { |
| 1820 | run_err("%s: Cannot create file", destfname); |
| 1821 | continue; |
| 1822 | } |
| 1823 | |
| 1824 | if (scp_accept_filexfer()) |
| 1825 | return; |
| 1826 | |
| 1827 | stat_bytes = 0; |
| 1828 | stat_starttime = time(NULL); |
| 1829 | stat_lasttime = 0; |
| 1830 | stat_name = stripslashes(destfname, 1); |
| 1831 | |
| 1832 | received = 0; |
| 1833 | while (received < act.size) { |
| 1834 | char transbuf[4096]; |
| 1835 | DWORD blksize, read, written; |
| 1836 | blksize = 4096; |
| 1837 | if (blksize > act.size - received) |
| 1838 | blksize = act.size - received; |
| 1839 | read = scp_recv_filedata(transbuf, blksize); |
| 1840 | if (read <= 0) |
| 1841 | bump("Lost connection"); |
| 1842 | if (wrerror) |
| 1843 | continue; |
| 1844 | if (!WriteFile(f, transbuf, read, &written, NULL) || |
| 1845 | written != read) { |
| 1846 | wrerror = 1; |
| 1847 | /* FIXME: in sftp we can actually abort the transfer */ |
| 1848 | if (statistics) |
| 1849 | printf("\r%-25.25s | %50s\n", |
| 1850 | stat_name, |
| 1851 | "Write error.. waiting for end of file"); |
| 1852 | continue; |
| 1853 | } |
| 1854 | if (statistics) { |
| 1855 | stat_bytes += read; |
| 1856 | if (time(NULL) > stat_lasttime || |
| 1857 | received + read == act.size) { |
| 1858 | stat_lasttime = time(NULL); |
| 1859 | print_stats(stat_name, act.size, stat_bytes, |
| 1860 | stat_starttime, stat_lasttime); |
| 1861 | } |
| 1862 | } |
| 1863 | received += read; |
| 1864 | } |
| 1865 | if (act.settime) { |
| 1866 | FILETIME actime, wrtime; |
| 1867 | TIME_POSIX_TO_WIN(act.atime, actime); |
| 1868 | TIME_POSIX_TO_WIN(act.mtime, wrtime); |
| 1869 | SetFileTime(f, NULL, &actime, &wrtime); |
| 1870 | } |
| 1871 | |
| 1872 | CloseHandle(f); |
| 1873 | if (wrerror) { |
| 1874 | run_err("%s: Write error", destfname); |
| 1875 | continue; |
| 1876 | } |
| 1877 | (void) scp_finish_filerecv(); |
| 1878 | sfree(destfname); |
| 1879 | sfree(act.buf); |
| 1880 | } |
| 1881 | } |
| 1882 | |
| 1883 | /* |
| 1884 | * We will copy local files to a remote server. |
| 1885 | */ |
| 1886 | static void toremote(int argc, char *argv[]) |
| 1887 | { |
| 1888 | char *src, *targ, *host, *user; |
| 1889 | char *cmd; |
| 1890 | int i; |
| 1891 | |
| 1892 | targ = argv[argc - 1]; |
| 1893 | |
| 1894 | /* Separate host from filename */ |
| 1895 | host = targ; |
| 1896 | targ = colon(targ); |
| 1897 | if (targ == NULL) |
| 1898 | bump("targ == NULL in toremote()"); |
| 1899 | *targ++ = '\0'; |
| 1900 | if (*targ == '\0') |
| 1901 | targ = "."; |
| 1902 | /* Substitute "." for emtpy target */ |
| 1903 | |
| 1904 | /* Separate host and username */ |
| 1905 | user = host; |
| 1906 | host = strrchr(host, '@'); |
| 1907 | if (host == NULL) { |
| 1908 | host = user; |
| 1909 | user = NULL; |
| 1910 | } else { |
| 1911 | *host++ = '\0'; |
| 1912 | if (*user == '\0') |
| 1913 | user = NULL; |
| 1914 | } |
| 1915 | |
| 1916 | if (argc == 2) { |
| 1917 | /* Find out if the source filespec covers multiple files |
| 1918 | if so, we should set the targetshouldbedirectory flag */ |
| 1919 | HANDLE fh; |
| 1920 | WIN32_FIND_DATA fdat; |
| 1921 | if (colon(argv[0]) != NULL) |
| 1922 | bump("%s: Remote to remote not supported", argv[0]); |
| 1923 | fh = FindFirstFile(argv[0], &fdat); |
| 1924 | if (fh == INVALID_HANDLE_VALUE) |
| 1925 | bump("%s: No such file or directory\n", argv[0]); |
| 1926 | if (FindNextFile(fh, &fdat)) |
| 1927 | targetshouldbedirectory = 1; |
| 1928 | FindClose(fh); |
| 1929 | } |
| 1930 | |
| 1931 | cmd = dupprintf("scp%s%s%s%s -t %s", |
| 1932 | verbose ? " -v" : "", |
| 1933 | recursive ? " -r" : "", |
| 1934 | preserve ? " -p" : "", |
| 1935 | targetshouldbedirectory ? " -d" : "", targ); |
| 1936 | do_cmd(host, user, cmd); |
| 1937 | sfree(cmd); |
| 1938 | |
| 1939 | scp_source_setup(targ, targetshouldbedirectory); |
| 1940 | |
| 1941 | for (i = 0; i < argc - 1; i++) { |
| 1942 | char *srcpath, *last; |
| 1943 | HANDLE dir; |
| 1944 | WIN32_FIND_DATA fdat; |
| 1945 | src = argv[i]; |
| 1946 | if (colon(src) != NULL) { |
| 1947 | tell_user(stderr, "%s: Remote to remote not supported\n", src); |
| 1948 | errs++; |
| 1949 | continue; |
| 1950 | } |
| 1951 | |
| 1952 | /* |
| 1953 | * Trim off the last pathname component of `src', to |
| 1954 | * provide the base pathname which will be prepended to |
| 1955 | * filenames returned from Find{First,Next}File. |
| 1956 | */ |
| 1957 | srcpath = dupstr(src); |
| 1958 | last = stripslashes(srcpath, 1); |
| 1959 | *last = '\0'; |
| 1960 | |
| 1961 | dir = FindFirstFile(src, &fdat); |
| 1962 | if (dir == INVALID_HANDLE_VALUE) { |
| 1963 | run_err("%s: No such file or directory", src); |
| 1964 | continue; |
| 1965 | } |
| 1966 | do { |
| 1967 | char *filename; |
| 1968 | /* |
| 1969 | * Ensure that . and .. are never matched by wildcards, |
| 1970 | * but only by deliberate action. |
| 1971 | */ |
| 1972 | if (!strcmp(fdat.cFileName, ".") || |
| 1973 | !strcmp(fdat.cFileName, "..")) { |
| 1974 | /* |
| 1975 | * Find*File has returned a special dir. We require |
| 1976 | * that _either_ `src' ends in a backslash followed |
| 1977 | * by that string, _or_ `src' is precisely that |
| 1978 | * string. |
| 1979 | */ |
| 1980 | int len = strlen(src), dlen = strlen(fdat.cFileName); |
| 1981 | if (len == dlen && !strcmp(src, fdat.cFileName)) { |
| 1982 | /* ok */ ; |
| 1983 | } else if (len > dlen + 1 && src[len - dlen - 1] == '\\' && |
| 1984 | !strcmp(src + len - dlen, fdat.cFileName)) { |
| 1985 | /* ok */ ; |
| 1986 | } else |
| 1987 | continue; /* ignore this one */ |
| 1988 | } |
| 1989 | filename = dupcat(srcpath, fdat.cFileName, NULL); |
| 1990 | source(filename); |
| 1991 | sfree(filename); |
| 1992 | } while (FindNextFile(dir, &fdat)); |
| 1993 | FindClose(dir); |
| 1994 | sfree(srcpath); |
| 1995 | } |
| 1996 | } |
| 1997 | |
| 1998 | /* |
| 1999 | * We will copy files from a remote server to the local machine. |
| 2000 | */ |
| 2001 | static void tolocal(int argc, char *argv[]) |
| 2002 | { |
| 2003 | char *src, *targ, *host, *user; |
| 2004 | char *cmd; |
| 2005 | |
| 2006 | if (argc != 2) |
| 2007 | bump("More than one remote source not supported"); |
| 2008 | |
| 2009 | src = argv[0]; |
| 2010 | targ = argv[1]; |
| 2011 | |
| 2012 | /* Separate host from filename */ |
| 2013 | host = src; |
| 2014 | src = colon(src); |
| 2015 | if (src == NULL) |
| 2016 | bump("Local to local copy not supported"); |
| 2017 | *src++ = '\0'; |
| 2018 | if (*src == '\0') |
| 2019 | src = "."; |
| 2020 | /* Substitute "." for empty filename */ |
| 2021 | |
| 2022 | /* Separate username and hostname */ |
| 2023 | user = host; |
| 2024 | host = strrchr(host, '@'); |
| 2025 | if (host == NULL) { |
| 2026 | host = user; |
| 2027 | user = NULL; |
| 2028 | } else { |
| 2029 | *host++ = '\0'; |
| 2030 | if (*user == '\0') |
| 2031 | user = NULL; |
| 2032 | } |
| 2033 | |
| 2034 | cmd = dupprintf("scp%s%s%s%s -f %s", |
| 2035 | verbose ? " -v" : "", |
| 2036 | recursive ? " -r" : "", |
| 2037 | preserve ? " -p" : "", |
| 2038 | targetshouldbedirectory ? " -d" : "", src); |
| 2039 | do_cmd(host, user, cmd); |
| 2040 | sfree(cmd); |
| 2041 | |
| 2042 | if (scp_sink_setup(src, preserve, recursive)) |
| 2043 | return; |
| 2044 | |
| 2045 | sink(targ, src); |
| 2046 | } |
| 2047 | |
| 2048 | /* |
| 2049 | * We will issue a list command to get a remote directory. |
| 2050 | */ |
| 2051 | static void get_dir_list(int argc, char *argv[]) |
| 2052 | { |
| 2053 | char *src, *host, *user; |
| 2054 | char *cmd, *p, *q; |
| 2055 | char c; |
| 2056 | |
| 2057 | src = argv[0]; |
| 2058 | |
| 2059 | /* Separate host from filename */ |
| 2060 | host = src; |
| 2061 | src = colon(src); |
| 2062 | if (src == NULL) |
| 2063 | bump("Local to local copy not supported"); |
| 2064 | *src++ = '\0'; |
| 2065 | if (*src == '\0') |
| 2066 | src = "."; |
| 2067 | /* Substitute "." for empty filename */ |
| 2068 | |
| 2069 | /* Separate username and hostname */ |
| 2070 | user = host; |
| 2071 | host = strrchr(host, '@'); |
| 2072 | if (host == NULL) { |
| 2073 | host = user; |
| 2074 | user = NULL; |
| 2075 | } else { |
| 2076 | *host++ = '\0'; |
| 2077 | if (*user == '\0') |
| 2078 | user = NULL; |
| 2079 | } |
| 2080 | |
| 2081 | cmd = smalloc(4 * strlen(src) + 100); |
| 2082 | strcpy(cmd, "ls -la '"); |
| 2083 | p = cmd + strlen(cmd); |
| 2084 | for (q = src; *q; q++) { |
| 2085 | if (*q == '\'') { |
| 2086 | *p++ = '\''; |
| 2087 | *p++ = '\\'; |
| 2088 | *p++ = '\''; |
| 2089 | *p++ = '\''; |
| 2090 | } else { |
| 2091 | *p++ = *q; |
| 2092 | } |
| 2093 | } |
| 2094 | *p++ = '\''; |
| 2095 | *p = '\0'; |
| 2096 | |
| 2097 | do_cmd(host, user, cmd); |
| 2098 | sfree(cmd); |
| 2099 | |
| 2100 | if (using_sftp) { |
| 2101 | scp_sftp_listdir(src); |
| 2102 | } else { |
| 2103 | while (ssh_scp_recv(&c, 1) > 0) |
| 2104 | tell_char(stdout, c); |
| 2105 | } |
| 2106 | } |
| 2107 | |
| 2108 | /* |
| 2109 | * Initialize the Win$ock driver. |
| 2110 | */ |
| 2111 | static void init_winsock(void) |
| 2112 | { |
| 2113 | WORD winsock_ver; |
| 2114 | WSADATA wsadata; |
| 2115 | |
| 2116 | winsock_ver = MAKEWORD(1, 1); |
| 2117 | if (WSAStartup(winsock_ver, &wsadata)) |
| 2118 | bump("Unable to initialise WinSock"); |
| 2119 | if (LOBYTE(wsadata.wVersion) != 1 || HIBYTE(wsadata.wVersion) != 1) |
| 2120 | bump("WinSock version is incompatible with 1.1"); |
| 2121 | } |
| 2122 | |
| 2123 | /* |
| 2124 | * Short description of parameters. |
| 2125 | */ |
| 2126 | static void usage(void) |
| 2127 | { |
| 2128 | printf("PuTTY Secure Copy client\n"); |
| 2129 | printf("%s\n", ver); |
| 2130 | printf("Usage: pscp [options] [user@]host:source target\n"); |
| 2131 | printf |
| 2132 | (" pscp [options] source [source...] [user@]host:target\n"); |
| 2133 | printf(" pscp [options] -ls user@host:filespec\n"); |
| 2134 | printf("Options:\n"); |
| 2135 | printf(" -p preserve file attributes\n"); |
| 2136 | printf(" -q quiet, don't show statistics\n"); |
| 2137 | printf(" -r copy directories recursively\n"); |
| 2138 | printf(" -v show verbose messages\n"); |
| 2139 | printf(" -load sessname Load settings from saved session\n"); |
| 2140 | printf(" -P port connect to specified port\n"); |
| 2141 | printf(" -l user connect with specified username\n"); |
| 2142 | printf(" -pw passw login with specified password\n"); |
| 2143 | printf(" -1 -2 force use of particular SSH protocol version\n"); |
| 2144 | printf(" -C enable compression\n"); |
| 2145 | printf(" -i key private key file for authentication\n"); |
| 2146 | printf(" -batch disable all interactive prompts\n"); |
| 2147 | printf(" -unsafe allow server-side wildcards (DANGEROUS)\n"); |
| 2148 | #if 0 |
| 2149 | /* |
| 2150 | * -gui is an internal option, used by GUI front ends to get |
| 2151 | * pscp to pass progress reports back to them. It's not an |
| 2152 | * ordinary user-accessible option, so it shouldn't be part of |
| 2153 | * the command-line help. The only people who need to know |
| 2154 | * about it are programmers, and they can read the source. |
| 2155 | */ |
| 2156 | printf |
| 2157 | (" -gui hWnd GUI mode with the windows handle for receiving messages\n"); |
| 2158 | #endif |
| 2159 | cleanup_exit(1); |
| 2160 | } |
| 2161 | |
| 2162 | void cmdline_error(char *p, ...) |
| 2163 | { |
| 2164 | va_list ap; |
| 2165 | fprintf(stderr, "pscp: "); |
| 2166 | va_start(ap, p); |
| 2167 | vfprintf(stderr, p, ap); |
| 2168 | va_end(ap); |
| 2169 | fprintf(stderr, "\n try typing just \"pscp\" for help\n"); |
| 2170 | exit(1); |
| 2171 | } |
| 2172 | |
| 2173 | /* |
| 2174 | * Main program (no, really?) |
| 2175 | */ |
| 2176 | int main(int argc, char *argv[]) |
| 2177 | { |
| 2178 | int i; |
| 2179 | |
| 2180 | default_protocol = PROT_TELNET; |
| 2181 | |
| 2182 | flags = FLAG_STDERR; |
| 2183 | cmdline_tooltype = TOOLTYPE_FILETRANSFER; |
| 2184 | ssh_get_line = &console_get_line; |
| 2185 | init_winsock(); |
| 2186 | sk_init(); |
| 2187 | |
| 2188 | for (i = 1; i < argc; i++) { |
| 2189 | int ret; |
| 2190 | if (argv[i][0] != '-') |
| 2191 | break; |
| 2192 | ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1); |
| 2193 | if (ret == -2) { |
| 2194 | cmdline_error("option \"%s\" requires an argument", argv[i]); |
| 2195 | } else if (ret == 2) { |
| 2196 | i++; /* skip next argument */ |
| 2197 | } else if (ret == 1) { |
| 2198 | /* We have our own verbosity in addition to `flags'. */ |
| 2199 | if (flags & FLAG_VERBOSE) |
| 2200 | verbose = 1; |
| 2201 | } else if (strcmp(argv[i], "-r") == 0) { |
| 2202 | recursive = 1; |
| 2203 | } else if (strcmp(argv[i], "-p") == 0) { |
| 2204 | preserve = 1; |
| 2205 | } else if (strcmp(argv[i], "-q") == 0) { |
| 2206 | statistics = 0; |
| 2207 | } else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-?") == 0) { |
| 2208 | usage(); |
| 2209 | } else if (strcmp(argv[i], "-gui") == 0 && i + 1 < argc) { |
| 2210 | gui_hwnd = argv[++i]; |
| 2211 | gui_mode = 1; |
| 2212 | console_batch_mode = TRUE; |
| 2213 | } else if (strcmp(argv[i], "-ls") == 0) { |
| 2214 | list = 1; |
| 2215 | } else if (strcmp(argv[i], "-batch") == 0) { |
| 2216 | console_batch_mode = 1; |
| 2217 | } else if (strcmp(argv[i], "-unsafe") == 0) { |
| 2218 | scp_unsafe_mode = 1; |
| 2219 | } else if (strcmp(argv[i], "--") == 0) { |
| 2220 | i++; |
| 2221 | break; |
| 2222 | } else { |
| 2223 | cmdline_error("unknown option \"%s\"", argv[i]); |
| 2224 | } |
| 2225 | } |
| 2226 | argc -= i; |
| 2227 | argv += i; |
| 2228 | back = NULL; |
| 2229 | |
| 2230 | if (list) { |
| 2231 | if (argc != 1) |
| 2232 | usage(); |
| 2233 | get_dir_list(argc, argv); |
| 2234 | |
| 2235 | } else { |
| 2236 | |
| 2237 | if (argc < 2) |
| 2238 | usage(); |
| 2239 | if (argc > 2) |
| 2240 | targetshouldbedirectory = 1; |
| 2241 | |
| 2242 | if (colon(argv[argc - 1]) != NULL) |
| 2243 | toremote(argc, argv); |
| 2244 | else |
| 2245 | tolocal(argc, argv); |
| 2246 | } |
| 2247 | |
| 2248 | if (back != NULL && back->socket(backhandle) != NULL) { |
| 2249 | char ch; |
| 2250 | back->special(backhandle, TS_EOF); |
| 2251 | ssh_scp_recv(&ch, 1); |
| 2252 | } |
| 2253 | WSACleanup(); |
| 2254 | random_save_seed(); |
| 2255 | |
| 2256 | /* GUI Adaptation - August 2000 */ |
| 2257 | if (gui_mode) { |
| 2258 | unsigned int msg_id = WM_RET_ERR_CNT; |
| 2259 | if (list) |
| 2260 | msg_id = WM_LS_RET_ERR_CNT; |
| 2261 | while (!PostMessage |
| 2262 | ((HWND) atoi(gui_hwnd), msg_id, (WPARAM) errs, |
| 2263 | 0 /*lParam */ ))SleepEx(1000, TRUE); |
| 2264 | } |
| 2265 | return (errs == 0 ? 0 : 1); |
| 2266 | } |
| 2267 | |
| 2268 | /* end */ |