| 1 | /* -*- c-file-style: "linux" -*- |
| 2 | |
| 3 | Copyright (C) 1996-2001 by Andrew Tridgell <tridge@samba.org> |
| 4 | Copyright (C) Paul Mackerras 1996 |
| 5 | Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org> |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | */ |
| 21 | |
| 22 | #include "rsync.h" |
| 23 | |
| 24 | time_t starttime = 0; |
| 25 | |
| 26 | struct stats stats; |
| 27 | |
| 28 | extern int verbose; |
| 29 | |
| 30 | static void show_malloc_stats(void); |
| 31 | |
| 32 | /**************************************************************************** |
| 33 | wait for a process to exit, calling io_flush while waiting |
| 34 | ****************************************************************************/ |
| 35 | void wait_process(pid_t pid, int *status) |
| 36 | { |
| 37 | while (waitpid(pid, status, WNOHANG) == 0) { |
| 38 | msleep(20); |
| 39 | io_flush(); |
| 40 | } |
| 41 | |
| 42 | /* TODO: If the child exited on a signal, then log an |
| 43 | * appropriate error message. Perhaps we should also accept a |
| 44 | * message describing the purpose of the child. Also indicate |
| 45 | * this to the caller so that thhey know something went |
| 46 | * wrong. */ |
| 47 | *status = WEXITSTATUS(*status); |
| 48 | } |
| 49 | |
| 50 | static void report(int f) |
| 51 | { |
| 52 | time_t t = time(NULL); |
| 53 | extern int am_server; |
| 54 | extern int am_sender; |
| 55 | extern int am_daemon; |
| 56 | extern int do_stats; |
| 57 | extern int remote_version; |
| 58 | int send_stats; |
| 59 | |
| 60 | if (do_stats) { |
| 61 | /* These come out from every process */ |
| 62 | show_malloc_stats(); |
| 63 | show_flist_stats(); |
| 64 | } |
| 65 | |
| 66 | if (am_daemon) { |
| 67 | log_exit(0, __FILE__, __LINE__); |
| 68 | if (f == -1 || !am_sender) return; |
| 69 | } |
| 70 | |
| 71 | send_stats = verbose || (remote_version >= 20); |
| 72 | if (am_server) { |
| 73 | if (am_sender && send_stats) { |
| 74 | int64 w; |
| 75 | /* store total_written in a temporary |
| 76 | because write_longint changes it */ |
| 77 | w = stats.total_written; |
| 78 | write_longint(f,stats.total_read); |
| 79 | write_longint(f,w); |
| 80 | write_longint(f,stats.total_size); |
| 81 | } |
| 82 | return; |
| 83 | } |
| 84 | |
| 85 | /* this is the client */ |
| 86 | |
| 87 | if (!am_sender && send_stats) { |
| 88 | int64 r; |
| 89 | stats.total_written = read_longint(f); |
| 90 | /* store total_read in a temporary, read_longint changes it */ |
| 91 | r = read_longint(f); |
| 92 | stats.total_size = read_longint(f); |
| 93 | stats.total_read = r; |
| 94 | } |
| 95 | |
| 96 | if (do_stats) { |
| 97 | if (!am_sender && !send_stats) { |
| 98 | /* missing the bytes written by the generator */ |
| 99 | rprintf(FINFO, "\nCannot show stats as receiver because remote protocol version is less than 20\n"); |
| 100 | rprintf(FINFO, "Use --stats -v to show stats\n"); |
| 101 | return; |
| 102 | } |
| 103 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
| 104 | rprintf(FINFO,"Number of files transferred: %d\n", |
| 105 | stats.num_transferred_files); |
| 106 | rprintf(FINFO,"Total file size: %.0f bytes\n", |
| 107 | (double)stats.total_size); |
| 108 | rprintf(FINFO,"Total transferred file size: %.0f bytes\n", |
| 109 | (double)stats.total_transferred_size); |
| 110 | rprintf(FINFO,"Literal data: %.0f bytes\n", |
| 111 | (double)stats.literal_data); |
| 112 | rprintf(FINFO,"Matched data: %.0f bytes\n", |
| 113 | (double)stats.matched_data); |
| 114 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
| 115 | rprintf(FINFO,"Total bytes written: %.0f\n", |
| 116 | (double)stats.total_written); |
| 117 | rprintf(FINFO,"Total bytes read: %.0f\n\n", |
| 118 | (double)stats.total_read); |
| 119 | } |
| 120 | |
| 121 | if (verbose || do_stats) { |
| 122 | rprintf(FINFO,"wrote %.0f bytes read %.0f bytes %.2f bytes/sec\n", |
| 123 | (double)stats.total_written, |
| 124 | (double)stats.total_read, |
| 125 | (stats.total_written+stats.total_read)/(0.5 + (t-starttime))); |
| 126 | rprintf(FINFO,"total size is %.0f speedup is %.2f\n", |
| 127 | (double)stats.total_size, |
| 128 | (1.0*stats.total_size)/(stats.total_written+stats.total_read)); |
| 129 | } |
| 130 | |
| 131 | fflush(stdout); |
| 132 | fflush(stderr); |
| 133 | } |
| 134 | |
| 135 | |
| 136 | /** |
| 137 | * If our C library can get malloc statistics, then show them to FINFO |
| 138 | **/ |
| 139 | static void show_malloc_stats(void) |
| 140 | { |
| 141 | #ifdef HAVE_MALLINFO |
| 142 | struct mallinfo mi; |
| 143 | extern int am_server; |
| 144 | extern int am_sender; |
| 145 | extern int am_daemon; |
| 146 | |
| 147 | mi = mallinfo(); |
| 148 | |
| 149 | rprintf(FINFO, RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
| 150 | getpid(), |
| 151 | am_server ? "server " : "", |
| 152 | am_daemon ? "daemon " : "", |
| 153 | am_sender ? "sender" : "receiver"); |
| 154 | rprintf(FINFO, " arena: %10d (bytes from sbrk)\n", mi.arena); |
| 155 | rprintf(FINFO, " ordblks: %10d (chunks not in use)\n", mi.ordblks); |
| 156 | rprintf(FINFO, " smblks: %10d\n", mi.smblks); |
| 157 | rprintf(FINFO, " hblks: %10d (chunks from mmap)\n", mi.hblks); |
| 158 | rprintf(FINFO, " hblkhd: %10d (bytes from mmap)\n", mi.hblkhd); |
| 159 | rprintf(FINFO, " usmblks: %10d\n", mi.usmblks); |
| 160 | rprintf(FINFO, " fsmblks: %10d\n", mi.fsmblks); |
| 161 | rprintf(FINFO, " uordblks: %10d (bytes used)\n", mi.uordblks); |
| 162 | rprintf(FINFO, " fordblks: %10d (bytes free)\n", mi.fordblks); |
| 163 | rprintf(FINFO, " keepcost: %10d (bytes in releasable chunk)\n", mi.keepcost); |
| 164 | #endif /* HAVE_MALLINFO */ |
| 165 | } |
| 166 | |
| 167 | |
| 168 | /* Start the remote shell. cmd may be NULL to use the default. */ |
| 169 | static pid_t do_cmd(char *cmd,char *machine,char *user,char *path,int *f_in,int *f_out) |
| 170 | { |
| 171 | char *args[100]; |
| 172 | int i,argc=0; |
| 173 | pid_t ret; |
| 174 | char *tok,*dir=NULL; |
| 175 | extern int local_server; |
| 176 | extern char *rsync_path; |
| 177 | extern int blocking_io; |
| 178 | extern int read_batch; |
| 179 | |
| 180 | if (!read_batch && !local_server) { |
| 181 | if (!cmd) |
| 182 | cmd = getenv(RSYNC_RSH_ENV); |
| 183 | if (!cmd) |
| 184 | cmd = RSYNC_RSH; |
| 185 | cmd = strdup(cmd); |
| 186 | if (!cmd) |
| 187 | goto oom; |
| 188 | |
| 189 | for (tok=strtok(cmd," ");tok;tok=strtok(NULL," ")) { |
| 190 | args[argc++] = tok; |
| 191 | } |
| 192 | |
| 193 | #if HAVE_REMSH |
| 194 | /* remsh (on HPUX) takes the arguments the other way around */ |
| 195 | args[argc++] = machine; |
| 196 | if (user) { |
| 197 | args[argc++] = "-l"; |
| 198 | args[argc++] = user; |
| 199 | } |
| 200 | #else |
| 201 | if (user) { |
| 202 | args[argc++] = "-l"; |
| 203 | args[argc++] = user; |
| 204 | } |
| 205 | args[argc++] = machine; |
| 206 | #endif |
| 207 | |
| 208 | args[argc++] = rsync_path; |
| 209 | |
| 210 | if ((blocking_io == -1) && (strcmp(cmd, RSYNC_RSH) == 0)) |
| 211 | blocking_io = 1; |
| 212 | |
| 213 | server_options(args,&argc); |
| 214 | |
| 215 | } |
| 216 | |
| 217 | args[argc++] = "."; |
| 218 | |
| 219 | if (path && *path) |
| 220 | args[argc++] = path; |
| 221 | |
| 222 | args[argc] = NULL; |
| 223 | |
| 224 | if (verbose > 3) { |
| 225 | rprintf(FINFO,"cmd="); |
| 226 | for (i=0;i<argc;i++) |
| 227 | rprintf(FINFO,"%s ",args[i]); |
| 228 | rprintf(FINFO,"\n"); |
| 229 | } |
| 230 | |
| 231 | if (local_server) { |
| 232 | if (read_batch) |
| 233 | create_flist_from_batch(); /* sets batch_flist */ |
| 234 | ret = local_child(argc, args, f_in, f_out); |
| 235 | } else { |
| 236 | ret = piped_child(args,f_in,f_out); |
| 237 | } |
| 238 | |
| 239 | if (dir) free(dir); |
| 240 | |
| 241 | return ret; |
| 242 | |
| 243 | oom: |
| 244 | out_of_memory("do_cmd"); |
| 245 | return 0; /* not reached */ |
| 246 | } |
| 247 | |
| 248 | |
| 249 | |
| 250 | |
| 251 | static char *get_local_name(struct file_list *flist,char *name) |
| 252 | { |
| 253 | STRUCT_STAT st; |
| 254 | extern int orig_umask; |
| 255 | |
| 256 | if (verbose > 2) |
| 257 | rprintf(FINFO,"get_local_name count=%d %s\n", |
| 258 | flist->count, NS(name)); |
| 259 | |
| 260 | if (!name) |
| 261 | return NULL; |
| 262 | |
| 263 | if (do_stat(name,&st) == 0) { |
| 264 | if (S_ISDIR(st.st_mode)) { |
| 265 | if (!push_dir(name, 0)) { |
| 266 | rprintf(FERROR,"push_dir %s : %s (1)\n", |
| 267 | name,strerror(errno)); |
| 268 | exit_cleanup(RERR_FILESELECT); |
| 269 | } |
| 270 | return NULL; |
| 271 | } |
| 272 | if (flist->count > 1) { |
| 273 | rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n"); |
| 274 | exit_cleanup(RERR_FILESELECT); |
| 275 | } |
| 276 | return name; |
| 277 | } |
| 278 | |
| 279 | if (flist->count <= 1) |
| 280 | return name; |
| 281 | |
| 282 | if (do_mkdir(name,0777 & ~orig_umask) != 0) { |
| 283 | rprintf(FERROR,"mkdir %s : %s (1)\n",name,strerror(errno)); |
| 284 | exit_cleanup(RERR_FILEIO); |
| 285 | } else { |
| 286 | if (verbose > 0) |
| 287 | rprintf(FINFO,"created directory %s\n",name); |
| 288 | } |
| 289 | |
| 290 | if (!push_dir(name, 0)) { |
| 291 | rprintf(FERROR,"push_dir %s : %s (2)\n", |
| 292 | name,strerror(errno)); |
| 293 | exit_cleanup(RERR_FILESELECT); |
| 294 | } |
| 295 | |
| 296 | return NULL; |
| 297 | } |
| 298 | |
| 299 | |
| 300 | |
| 301 | |
| 302 | static void do_server_sender(int f_in, int f_out, int argc,char *argv[]) |
| 303 | { |
| 304 | int i; |
| 305 | struct file_list *flist; |
| 306 | char *dir = argv[0]; |
| 307 | extern int relative_paths; |
| 308 | extern int recurse; |
| 309 | extern int remote_version; |
| 310 | |
| 311 | if (verbose > 2) |
| 312 | rprintf(FINFO,"server_sender starting pid=%d\n",(int)getpid()); |
| 313 | |
| 314 | if (!relative_paths && !push_dir(dir, 0)) { |
| 315 | rprintf(FERROR,"push_dir %s: %s (3)\n",dir,strerror(errno)); |
| 316 | exit_cleanup(RERR_FILESELECT); |
| 317 | } |
| 318 | argc--; |
| 319 | argv++; |
| 320 | |
| 321 | if (strcmp(dir,".")) { |
| 322 | int l = strlen(dir); |
| 323 | if (strcmp(dir,"/") == 0) |
| 324 | l = 0; |
| 325 | for (i=0;i<argc;i++) |
| 326 | argv[i] += l+1; |
| 327 | } |
| 328 | |
| 329 | if (argc == 0 && recurse) { |
| 330 | argc=1; |
| 331 | argv--; |
| 332 | argv[0] = "."; |
| 333 | } |
| 334 | |
| 335 | flist = send_file_list(f_out,argc,argv); |
| 336 | if (!flist || flist->count == 0) { |
| 337 | exit_cleanup(0); |
| 338 | } |
| 339 | |
| 340 | send_files(flist,f_out,f_in); |
| 341 | io_flush(); |
| 342 | report(f_out); |
| 343 | if (remote_version >= 24) { |
| 344 | /* final goodbye message */ |
| 345 | read_int(f_in); |
| 346 | } |
| 347 | io_flush(); |
| 348 | exit_cleanup(0); |
| 349 | } |
| 350 | |
| 351 | |
| 352 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
| 353 | { |
| 354 | int pid; |
| 355 | int status=0; |
| 356 | int recv_pipe[2]; |
| 357 | int error_pipe[2]; |
| 358 | extern int preserve_hard_links; |
| 359 | extern int delete_after; |
| 360 | extern int recurse; |
| 361 | extern int delete_mode; |
| 362 | extern int remote_version; |
| 363 | |
| 364 | if (preserve_hard_links) |
| 365 | init_hard_links(flist); |
| 366 | |
| 367 | if (!delete_after) { |
| 368 | /* I moved this here from recv_files() to prevent a race condition */ |
| 369 | if (recurse && delete_mode && !local_name && flist->count>0) { |
| 370 | delete_files(flist); |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | if (fd_pair(recv_pipe) < 0) { |
| 375 | rprintf(FERROR,"pipe failed in do_recv\n"); |
| 376 | exit_cleanup(RERR_SOCKETIO); |
| 377 | } |
| 378 | |
| 379 | if (fd_pair(error_pipe) < 0) { |
| 380 | rprintf(FERROR,"error pipe failed in do_recv\n"); |
| 381 | exit_cleanup(RERR_SOCKETIO); |
| 382 | } |
| 383 | |
| 384 | io_flush(); |
| 385 | |
| 386 | if ((pid=do_fork()) == 0) { |
| 387 | close(recv_pipe[0]); |
| 388 | close(error_pipe[0]); |
| 389 | if (f_in != f_out) close(f_out); |
| 390 | |
| 391 | /* we can't let two processes write to the socket at one time */ |
| 392 | io_multiplexing_close(); |
| 393 | |
| 394 | /* set place to send errors */ |
| 395 | set_error_fd(error_pipe[1]); |
| 396 | |
| 397 | recv_files(f_in,flist,local_name,recv_pipe[1]); |
| 398 | io_flush(); |
| 399 | report(f_in); |
| 400 | |
| 401 | write_int(recv_pipe[1],1); |
| 402 | close(recv_pipe[1]); |
| 403 | io_flush(); |
| 404 | /* finally we go to sleep until our parent kills us |
| 405 | with a USR2 signal. We sleep for a short time as on |
| 406 | some OSes a signal won't interrupt a sleep! */ |
| 407 | while (msleep(20)) |
| 408 | ; |
| 409 | } |
| 410 | |
| 411 | close(recv_pipe[1]); |
| 412 | close(error_pipe[1]); |
| 413 | if (f_in != f_out) close(f_in); |
| 414 | |
| 415 | io_start_buffering(f_out); |
| 416 | |
| 417 | io_set_error_fd(error_pipe[0]); |
| 418 | |
| 419 | generate_files(f_out,flist,local_name,recv_pipe[0]); |
| 420 | |
| 421 | read_int(recv_pipe[0]); |
| 422 | close(recv_pipe[0]); |
| 423 | if (remote_version >= 24) { |
| 424 | /* send a final goodbye message */ |
| 425 | write_int(f_out, -1); |
| 426 | } |
| 427 | io_flush(); |
| 428 | |
| 429 | kill(pid, SIGUSR2); |
| 430 | wait_process(pid, &status); |
| 431 | return status; |
| 432 | } |
| 433 | |
| 434 | |
| 435 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
| 436 | { |
| 437 | int status; |
| 438 | struct file_list *flist; |
| 439 | char *local_name=NULL; |
| 440 | char *dir = NULL; |
| 441 | extern int delete_mode; |
| 442 | extern int delete_excluded; |
| 443 | extern int am_daemon; |
| 444 | extern int module_id; |
| 445 | extern int am_sender; |
| 446 | extern int read_batch; |
| 447 | extern struct file_list *batch_flist; |
| 448 | |
| 449 | if (verbose > 2) |
| 450 | rprintf(FINFO,"server_recv(%d) starting pid=%d\n",argc,(int)getpid()); |
| 451 | |
| 452 | if (am_daemon && lp_read_only(module_id) && !am_sender) { |
| 453 | rprintf(FERROR,"ERROR: module is read only\n"); |
| 454 | exit_cleanup(RERR_SYNTAX); |
| 455 | return; |
| 456 | } |
| 457 | |
| 458 | |
| 459 | if (argc > 0) { |
| 460 | dir = argv[0]; |
| 461 | argc--; |
| 462 | argv++; |
| 463 | if (!am_daemon && !push_dir(dir, 0)) { |
| 464 | rprintf(FERROR,"push_dir %s : %s (4)\n", |
| 465 | dir,strerror(errno)); |
| 466 | exit_cleanup(RERR_FILESELECT); |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | if (delete_mode && !delete_excluded) |
| 471 | recv_exclude_list(f_in); |
| 472 | |
| 473 | if (read_batch) |
| 474 | flist = batch_flist; |
| 475 | else |
| 476 | flist = recv_file_list(f_in); |
| 477 | if (!flist) { |
| 478 | rprintf(FERROR,"server_recv: recv_file_list error\n"); |
| 479 | exit_cleanup(RERR_FILESELECT); |
| 480 | } |
| 481 | |
| 482 | if (argc > 0) { |
| 483 | if (strcmp(dir,".")) { |
| 484 | argv[0] += strlen(dir); |
| 485 | if (argv[0][0] == '/') argv[0]++; |
| 486 | } |
| 487 | local_name = get_local_name(flist,argv[0]); |
| 488 | } |
| 489 | |
| 490 | status = do_recv(f_in,f_out,flist,local_name); |
| 491 | exit_cleanup(status); |
| 492 | } |
| 493 | |
| 494 | |
| 495 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
| 496 | { |
| 497 | extern int cvs_exclude; |
| 498 | extern int am_sender; |
| 499 | extern int remote_version; |
| 500 | extern int read_batch; |
| 501 | |
| 502 | setup_protocol(f_out, f_in); |
| 503 | |
| 504 | set_nonblocking(f_in); |
| 505 | set_nonblocking(f_out); |
| 506 | |
| 507 | if (remote_version >= 23) |
| 508 | io_start_multiplex_out(f_out); |
| 509 | |
| 510 | if (am_sender) { |
| 511 | if (!read_batch) { |
| 512 | recv_exclude_list(f_in); |
| 513 | if (cvs_exclude) |
| 514 | add_cvs_excludes(); |
| 515 | } |
| 516 | do_server_sender(f_in, f_out, argc, argv); |
| 517 | } else { |
| 518 | do_server_recv(f_in, f_out, argc, argv); |
| 519 | } |
| 520 | exit_cleanup(0); |
| 521 | } |
| 522 | |
| 523 | |
| 524 | /* |
| 525 | * This is called once the connection has been negotiated. It is used |
| 526 | * for rsyncd, remote-shell, and local connections. |
| 527 | */ |
| 528 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
| 529 | { |
| 530 | struct file_list *flist = NULL; |
| 531 | int status = 0, status2 = 0; |
| 532 | char *local_name = NULL; |
| 533 | extern int am_sender; |
| 534 | extern int remote_version; |
| 535 | extern pid_t cleanup_child_pid; |
| 536 | extern int write_batch; |
| 537 | extern int read_batch; |
| 538 | extern struct file_list *batch_flist; |
| 539 | |
| 540 | cleanup_child_pid = pid; |
| 541 | if (read_batch) |
| 542 | flist = batch_flist; |
| 543 | |
| 544 | set_nonblocking(f_in); |
| 545 | set_nonblocking(f_out); |
| 546 | |
| 547 | setup_protocol(f_out,f_in); |
| 548 | |
| 549 | if (remote_version >= 23) |
| 550 | io_start_multiplex_in(f_in); |
| 551 | |
| 552 | if (am_sender) { |
| 553 | extern int cvs_exclude; |
| 554 | extern int delete_mode; |
| 555 | extern int delete_excluded; |
| 556 | if (cvs_exclude) |
| 557 | add_cvs_excludes(); |
| 558 | if (delete_mode && !delete_excluded) |
| 559 | send_exclude_list(f_out); |
| 560 | if (!read_batch) /* dw -- don't write to pipe */ |
| 561 | flist = send_file_list(f_out,argc,argv); |
| 562 | if (verbose > 3) |
| 563 | rprintf(FINFO,"file list sent\n"); |
| 564 | |
| 565 | send_files(flist,f_out,f_in); |
| 566 | if (remote_version >= 24) { |
| 567 | /* final goodbye message */ |
| 568 | read_int(f_in); |
| 569 | } |
| 570 | if (pid != -1) { |
| 571 | if (verbose > 3) |
| 572 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
| 573 | io_flush(); |
| 574 | wait_process(pid, &status); |
| 575 | } |
| 576 | report(-1); |
| 577 | exit_cleanup(status); |
| 578 | } |
| 579 | |
| 580 | if (argc == 0) { |
| 581 | extern int list_only; |
| 582 | list_only = 1; |
| 583 | } |
| 584 | |
| 585 | if (!write_batch) |
| 586 | send_exclude_list(f_out); |
| 587 | |
| 588 | flist = recv_file_list(f_in); |
| 589 | if (!flist || flist->count == 0) { |
| 590 | rprintf(FINFO, "client: nothing to do: " |
| 591 | "perhaps you need to specify some filenames or " |
| 592 | "the --recursive option?\n"); |
| 593 | exit_cleanup(0); |
| 594 | } |
| 595 | |
| 596 | local_name = get_local_name(flist,argv[0]); |
| 597 | |
| 598 | status2 = do_recv(f_in,f_out,flist,local_name); |
| 599 | |
| 600 | if (pid != -1) { |
| 601 | if (verbose > 3) |
| 602 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
| 603 | io_flush(); |
| 604 | wait_process(pid, &status); |
| 605 | } |
| 606 | |
| 607 | return MAX(status, status2); |
| 608 | } |
| 609 | |
| 610 | static char *find_colon(char *s) |
| 611 | { |
| 612 | char *p, *p2; |
| 613 | |
| 614 | p = strchr(s,':'); |
| 615 | if (!p) return NULL; |
| 616 | |
| 617 | /* now check to see if there is a / in the string before the : - if there is then |
| 618 | discard the colon on the assumption that the : is part of a filename */ |
| 619 | p2 = strchr(s,'/'); |
| 620 | if (p2 && p2 < p) return NULL; |
| 621 | |
| 622 | return p; |
| 623 | } |
| 624 | |
| 625 | |
| 626 | static int copy_argv (char *argv[]) |
| 627 | { |
| 628 | int i; |
| 629 | |
| 630 | for (i = 0; argv[i]; i++) { |
| 631 | if (!(argv[i] = strdup(argv[i]))) { |
| 632 | rprintf (FERROR, "out of memory at %s(%d)\n", |
| 633 | __FILE__, __LINE__); |
| 634 | return RERR_MALLOC; |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | |
| 642 | /* |
| 643 | * Start a client for either type of remote connection. Work out |
| 644 | * whether the arguments request a remote shell or rsyncd connection, |
| 645 | * and call the appropriate connection function, then run_client. |
| 646 | */ |
| 647 | static int start_client(int argc, char *argv[]) |
| 648 | { |
| 649 | char *p; |
| 650 | char *shell_machine = NULL; |
| 651 | char *shell_path = NULL; |
| 652 | char *shell_user = NULL; |
| 653 | int ret; |
| 654 | pid_t pid; |
| 655 | int f_in,f_out; |
| 656 | extern int local_server; |
| 657 | extern int am_sender; |
| 658 | extern char *shell_cmd; |
| 659 | extern int rsync_port; |
| 660 | extern int whole_file; |
| 661 | extern int write_batch; |
| 662 | extern int read_batch; |
| 663 | int rc; |
| 664 | |
| 665 | /* Don't clobber argv[] so that ps(1) can still show the right |
| 666 | command line. */ |
| 667 | if ((rc = copy_argv (argv))) |
| 668 | return rc; |
| 669 | |
| 670 | if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0) { |
| 671 | char *host, *path; |
| 672 | |
| 673 | host = argv[0] + strlen(URL_PREFIX); |
| 674 | p = strchr(host,'/'); |
| 675 | if (p) { |
| 676 | *p = 0; |
| 677 | path = p+1; |
| 678 | } else { |
| 679 | path=""; |
| 680 | } |
| 681 | p = strchr(host,':'); |
| 682 | if (p) { |
| 683 | rsync_port = atoi(p+1); |
| 684 | *p = 0; |
| 685 | } |
| 686 | return start_socket_client(host, path, argc-1, argv+1); |
| 687 | } |
| 688 | |
| 689 | if (!read_batch) { |
| 690 | p = find_colon(argv[0]); |
| 691 | |
| 692 | if (p) { |
| 693 | if (p[1] == ':') { |
| 694 | *p = 0; |
| 695 | return start_socket_client(argv[0], p+2, argc-1, argv+1); |
| 696 | } |
| 697 | |
| 698 | if (argc < 1) { |
| 699 | usage(FERROR); |
| 700 | exit_cleanup(RERR_SYNTAX); |
| 701 | } |
| 702 | |
| 703 | am_sender = 0; |
| 704 | *p = 0; |
| 705 | shell_machine = argv[0]; |
| 706 | shell_path = p+1; |
| 707 | argc--; |
| 708 | argv++; |
| 709 | } else { |
| 710 | am_sender = 1; |
| 711 | |
| 712 | p = find_colon(argv[argc-1]); |
| 713 | if (!p) { |
| 714 | local_server = 1; |
| 715 | /* |
| 716 | * disable "rsync algorithm" when both sides local, |
| 717 | * except when creating a batch update |
| 718 | */ |
| 719 | if (!write_batch && whole_file == -1) |
| 720 | whole_file = 1; |
| 721 | } else if (p[1] == ':') { |
| 722 | *p = 0; |
| 723 | return start_socket_client(argv[argc-1], p+2, argc-1, argv); |
| 724 | } |
| 725 | |
| 726 | if (argc < 2) { |
| 727 | usage(FERROR); |
| 728 | exit_cleanup(RERR_SYNTAX); |
| 729 | } |
| 730 | |
| 731 | if (local_server) { |
| 732 | shell_machine = NULL; |
| 733 | shell_path = argv[argc-1]; |
| 734 | } else { |
| 735 | *p = 0; |
| 736 | shell_machine = argv[argc-1]; |
| 737 | shell_path = p+1; |
| 738 | } |
| 739 | argc--; |
| 740 | } |
| 741 | } else { |
| 742 | am_sender = 1; |
| 743 | local_server = 1; |
| 744 | shell_path = argv[argc-1]; |
| 745 | } |
| 746 | |
| 747 | if (shell_machine) { |
| 748 | p = strchr(shell_machine,'@'); |
| 749 | if (p) { |
| 750 | *p = 0; |
| 751 | shell_user = shell_machine; |
| 752 | shell_machine = p+1; |
| 753 | } |
| 754 | } |
| 755 | |
| 756 | if (verbose > 3) { |
| 757 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
| 758 | shell_cmd?shell_cmd:"", |
| 759 | shell_machine?shell_machine:"", |
| 760 | shell_user?shell_user:"", |
| 761 | shell_path?shell_path:""); |
| 762 | } |
| 763 | |
| 764 | if (!am_sender && argc > 1) { |
| 765 | usage(FERROR); |
| 766 | exit_cleanup(RERR_SYNTAX); |
| 767 | } |
| 768 | |
| 769 | if (argc == 0 && !am_sender) { |
| 770 | extern int list_only; |
| 771 | list_only = 1; |
| 772 | } |
| 773 | |
| 774 | pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path,&f_in,&f_out); |
| 775 | |
| 776 | ret = client_run(f_in, f_out, pid, argc, argv); |
| 777 | |
| 778 | fflush(stdout); |
| 779 | fflush(stderr); |
| 780 | |
| 781 | return ret; |
| 782 | } |
| 783 | |
| 784 | |
| 785 | static RETSIGTYPE sigusr1_handler(int val) { |
| 786 | exit_cleanup(RERR_SIGNAL); |
| 787 | } |
| 788 | |
| 789 | static RETSIGTYPE sigusr2_handler(int val) { |
| 790 | extern int log_got_error; |
| 791 | if (log_got_error) _exit(RERR_PARTIAL); |
| 792 | _exit(0); |
| 793 | } |
| 794 | |
| 795 | static RETSIGTYPE sigchld_handler(int val) { |
| 796 | #ifdef WNOHANG |
| 797 | while (waitpid(-1, NULL, WNOHANG) > 0) ; |
| 798 | #endif |
| 799 | } |
| 800 | |
| 801 | int main(int argc,char *argv[]) |
| 802 | { |
| 803 | extern int am_root; |
| 804 | extern int orig_umask; |
| 805 | extern int dry_run; |
| 806 | extern int am_daemon; |
| 807 | extern int am_server; |
| 808 | int ret; |
| 809 | extern int write_batch; |
| 810 | int orig_argc; |
| 811 | char **orig_argv; |
| 812 | |
| 813 | orig_argc = argc; |
| 814 | orig_argv = argv; |
| 815 | |
| 816 | signal(SIGUSR1, sigusr1_handler); |
| 817 | signal(SIGUSR2, sigusr2_handler); |
| 818 | signal(SIGCHLD, sigchld_handler); |
| 819 | |
| 820 | starttime = time(NULL); |
| 821 | am_root = (getuid() == 0); |
| 822 | |
| 823 | memset(&stats, 0, sizeof(stats)); |
| 824 | |
| 825 | if (argc < 2) { |
| 826 | usage(FERROR); |
| 827 | exit_cleanup(RERR_SYNTAX); |
| 828 | } |
| 829 | |
| 830 | /* we set a 0 umask so that correct file permissions can be |
| 831 | carried across */ |
| 832 | orig_umask = (int)umask(0); |
| 833 | |
| 834 | if (!parse_arguments(&argc, (const char ***) &argv, 1)) { |
| 835 | /* FIXME: We ought to call the same error-handling |
| 836 | * code here, rather than relying on getopt. */ |
| 837 | option_error(); |
| 838 | exit_cleanup(RERR_SYNTAX); |
| 839 | } |
| 840 | |
| 841 | signal(SIGINT,SIGNAL_CAST sig_int); |
| 842 | signal(SIGPIPE,SIGNAL_CAST sig_int); |
| 843 | signal(SIGHUP,SIGNAL_CAST sig_int); |
| 844 | signal(SIGTERM,SIGNAL_CAST sig_int); |
| 845 | |
| 846 | /* Initialize push_dir here because on some old systems getcwd |
| 847 | (implemented by forking "pwd" and reading its output) doesn't |
| 848 | work when there are other child processes. Also, on all systems |
| 849 | that implement getcwd that way "pwd" can't be found after chroot. */ |
| 850 | push_dir(NULL,0); |
| 851 | |
| 852 | if (write_batch && !am_server) { |
| 853 | write_batch_argvs_file(orig_argc, orig_argv); |
| 854 | } |
| 855 | |
| 856 | if (am_daemon) { |
| 857 | return daemon_main(); |
| 858 | } |
| 859 | |
| 860 | if (argc < 1) { |
| 861 | usage(FERROR); |
| 862 | exit_cleanup(RERR_SYNTAX); |
| 863 | } |
| 864 | |
| 865 | if (dry_run) |
| 866 | verbose = MAX(verbose,1); |
| 867 | |
| 868 | #ifndef SUPPORT_LINKS |
| 869 | if (!am_server && preserve_links) { |
| 870 | rprintf(FERROR,"ERROR: symbolic links not supported\n"); |
| 871 | exit_cleanup(RERR_UNSUPPORTED); |
| 872 | } |
| 873 | #endif |
| 874 | |
| 875 | if (am_server) { |
| 876 | set_nonblocking(STDIN_FILENO); |
| 877 | set_nonblocking(STDOUT_FILENO); |
| 878 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
| 879 | } |
| 880 | |
| 881 | ret = start_client(argc, argv); |
| 882 | if (ret == -1) |
| 883 | exit_cleanup(RERR_STARTCLIENT); |
| 884 | else |
| 885 | exit_cleanup(ret); |
| 886 | return ret; |
| 887 | } |