main.c revision 66528
1/* 2 * Copyright (c) 1992, Brian Berliner and Jeff Polk 3 * Copyright (c) 1989-1992, Brian Berliner 4 * 5 * You may distribute under the terms of the GNU General Public License 6 * as specified in the README file that comes with the CVS source distribution. 7 * 8 * This is the main C driver for the CVS system. 9 * 10 * Credit to Dick Grune, Vrije Universiteit, Amsterdam, for writing 11 * the shell-script CVS system that this is based on. 12 * 13 * $FreeBSD: head/contrib/cvs/src/main.c 66528 2000-10-02 06:43:58Z peter $ 14 */ 15 16#include <assert.h> 17#include "cvs.h" 18#include "prepend_args.h" 19 20#ifdef HAVE_WINSOCK_H 21#include <winsock.h> 22#else 23extern int gethostname (); 24#endif 25 26char *program_name; 27char *program_path; 28char *command_name; 29 30/* I'd dynamically allocate this, but it seems like gethostname 31 requires a fixed size array. If I'm remembering the RFCs right, 32 256 should be enough. */ 33#ifndef MAXHOSTNAMELEN 34#define MAXHOSTNAMELEN 256 35#endif 36 37char hostname[MAXHOSTNAMELEN]; 38 39int use_editor = 1; 40int use_cvsrc = 1; 41int cvswrite = !CVSREAD_DFLT; 42int really_quiet = 0; 43int quiet = 0; 44int trace = 0; 45int noexec = 0; 46int readonlyfs = 0; 47int require_real_user = 0; 48int logoff = 0; 49 50/* Set if we should be writing CVSADM directories at top level. At 51 least for now we'll make the default be off (the CVS 1.9, not CVS 52 1.9.2, behavior). */ 53int top_level_admin = 0; 54 55mode_t cvsumask = UMASK_DFLT; 56 57char *CurDir; 58 59/* 60 * Defaults, for the environment variables that are not set 61 */ 62char *Tmpdir = TMPDIR_DFLT; 63char *Editor = EDITOR_DFLT; 64 65 66/* When our working directory contains subdirectories with different 67 values in CVS/Root files, we maintain a list of them. */ 68List *root_directories = NULL; 69 70/* We step through the above values. This variable is set to reflect 71 the currently active value. */ 72char *current_root = NULL; 73 74 75static const struct cmd 76{ 77 char *fullname; /* Full name of the function (e.g. "commit") */ 78 79 /* Synonyms for the command, nick1 and nick2. We supply them 80 mostly for two reasons: (1) CVS has always supported them, and 81 we need to maintain compatibility, (2) if there is a need for a 82 version which is shorter than the fullname, for ease in typing. 83 Synonyms have the disadvantage that people will see "new" and 84 then have to think about it, or look it up, to realize that is 85 the operation they know as "add". Also, this means that one 86 cannot create a command "cvs new" with a different meaning. So 87 new synonyms are probably best used sparingly, and where used 88 should be abbreviations of the fullname (preferably consisting 89 of the first 2 or 3 or so letters). 90 91 One thing that some systems do is to recognize any unique 92 abbreviation, for example "annotat" "annota", etc., for 93 "annotate". The problem with this is that scripts and user 94 habits will expect a certain abbreviation to be unique, and in 95 a future release of CVS it may not be. So it is better to 96 accept only an explicit list of abbreviations and plan on 97 supporting them in the future as well as now. */ 98 99 char *nick1; 100 char *nick2; 101 102 int (*func) (); /* Function takes (argc, argv) arguments. */ 103} cmds[] = 104 105{ 106 { "add", "ad", "new", add }, 107 { "admin", "adm", "rcs", admin }, 108 { "annotate", "ann", NULL, annotate }, 109 { "checkout", "co", "get", checkout }, 110 { "commit", "ci", "com", commit }, 111 { "diff", "di", "dif", diff }, 112 { "edit", NULL, NULL, edit }, 113 { "editors", NULL, NULL, editors }, 114 { "export", "exp", "ex", checkout }, 115 { "history", "hi", "his", history }, 116 { "import", "im", "imp", import }, 117 { "init", NULL, NULL, init }, 118#if defined (HAVE_KERBEROS) && defined (SERVER_SUPPORT) 119 { "kserver", NULL, NULL, server }, /* placeholder */ 120#endif 121 { "log", "lo", "rlog", cvslog }, 122#ifdef AUTH_CLIENT_SUPPORT 123 { "login", "logon", "lgn", login }, 124 { "logout", NULL, NULL, logout }, 125#endif /* AUTH_CLIENT_SUPPORT */ 126#if (defined(AUTH_SERVER_SUPPORT) || defined (HAVE_GSSAPI)) && defined(SERVER_SUPPORT) 127 { "pserver", NULL, NULL, server }, /* placeholder */ 128#endif 129 { "rdiff", "patch", "pa", patch }, 130 { "release", "re", "rel", release }, 131 { "remove", "rm", "delete", cvsremove }, 132 { "rtag", "rt", "rfreeze", rtag }, 133#ifdef SERVER_SUPPORT 134 { "server", NULL, NULL, server }, 135#endif 136 { "status", "st", "stat", cvsstatus }, 137 { "tag", "ta", "freeze", cvstag }, 138 { "unedit", NULL, NULL, unedit }, 139 { "update", "up", "upd", update }, 140 { "version", "ve", "ver", version }, 141 { "watch", NULL, NULL, watch }, 142 { "watchers", NULL, NULL, watchers }, 143 { NULL, NULL, NULL, NULL }, 144}; 145 146static const char *const usg[] = 147{ 148 /* CVS usage messages never have followed the GNU convention of 149 putting metavariables in uppercase. I don't know whether that 150 is a good convention or not, but if it changes it would have to 151 change in all the usage messages. For now, they consistently 152 use lowercase, as far as I know. Puncutation is pretty funky, 153 though. Sometimes they use none, as here. Sometimes they use 154 single quotes (not the TeX-ish `' stuff), as in --help-options. 155 Sometimes they use double quotes, as in cvs -H add. 156 157 Most (not all) of the usage messages seem to have periods at 158 the end of each line. I haven't tried to duplicate this style 159 in --help as it is a rather different format from the rest. */ 160 161 "Usage: %s [cvs-options] command [command-options-and-arguments]\n", 162 " where cvs-options are -q, -n, etc.\n", 163 " (specify --help-options for a list of options)\n", 164 " where command is add, admin, etc.\n", 165 " (specify --help-commands for a list of commands\n", 166 " or --help-synonyms for a list of command synonyms)\n", 167 " where command-options-and-arguments depend on the specific command\n", 168 " (specify -H followed by a command name for command-specific help)\n", 169 " Specify --help to receive this message\n", 170 "\n", 171 172 /* Some people think that a bug-reporting address should go here. IMHO, 173 the web sites are better because anything else is very likely to go 174 obsolete in the years between a release and when someone might be 175 reading this help. Besides, we could never adequately discuss 176 bug reporting in a concise enough way to put in a help message. */ 177 178 /* I was going to put this at the top, but usage() wants the %s to 179 be in the first line. */ 180 "The Concurrent Versions System (CVS) is a tool for version control.\n", 181 /* I really don't think I want to try to define "version control" 182 in one line. I'm not sure one can get more concise than the 183 paragraph in ../cvs.spec without assuming the reader knows what 184 version control means. */ 185 186 "For CVS updates and additional information, see\n", 187 " the CVS home page at http://www.cvshome.org/ or\n", 188 " Pascal Molli's CVS site at http://www.loria.fr/~molli/cvs-index.html\n", 189 NULL, 190}; 191 192static const char *const cmd_usage[] = 193{ 194 "CVS commands are:\n", 195 " add Add a new file/directory to the repository\n", 196 " admin Administration front end for rcs\n", 197 " annotate Show last revision where each line was modified\n", 198 " checkout Checkout sources for editing\n", 199 " commit Check files into the repository\n", 200 " diff Show differences between revisions\n", 201 " edit Get ready to edit a watched file\n", 202 " editors See who is editing a watched file\n", 203 " export Export sources from CVS, similar to checkout\n", 204 " history Show repository access history\n", 205 " import Import sources into CVS, using vendor branches\n", 206 " init Create a CVS repository if it doesn't exist\n", 207#if defined (HAVE_KERBEROS) && defined (SERVER_SUPPORT) 208 " kserver Kerberos server mode\n", 209#endif 210 " log Print out history information for files\n", 211#ifdef AUTH_CLIENT_SUPPORT 212 " login Prompt for password for authenticating server\n", 213 " logout Removes entry in .cvspass for remote repository\n", 214#endif /* AUTH_CLIENT_SUPPORT */ 215#if (defined(AUTH_SERVER_SUPPORT) || defined (HAVE_GSSAPI)) && defined(SERVER_SUPPORT) 216 " pserver Password server mode\n", 217#endif 218 " rdiff Create 'patch' format diffs between releases\n", 219 " release Indicate that a Module is no longer in use\n", 220 " remove Remove an entry from the repository\n", 221 " rtag Add a symbolic tag to a module\n", 222#ifdef SERVER_SUPPORT 223 " server Server mode\n", 224#endif 225 " status Display status information on checked out files\n", 226 " tag Add a symbolic tag to checked out version of files\n", 227 " unedit Undo an edit command\n", 228 " update Bring work tree in sync with repository\n", 229 " watch Set watches\n", 230 " watchers See who is watching a file\n", 231 "(Specify the --help option for a list of other help options)\n", 232 NULL, 233}; 234 235static const char *const opt_usage[] = 236{ 237 /* Omit -b because it is just for compatibility. */ 238 "CVS global options (specified before the command name) are:\n", 239 " -H Displays usage information for command.\n", 240 " -Q Cause CVS to be really quiet.\n", 241 " -q Cause CVS to be somewhat quiet.\n", 242 " -r Make checked-out files read-only.\n", 243 " -w Make checked-out files read-write (default).\n", 244 " -g Force group-write perms on checked-out files.\n", 245 " -l Turn history logging off.\n", 246 " -n Do not execute anything that will change the disk.\n", 247 " -t Show trace of program execution -- try with -n.\n", 248 " -R Assume repository is read-only, such as CDROM\n", 249 " -v CVS version and copyright.\n", 250 " -T tmpdir Use 'tmpdir' for temporary files.\n", 251 " -e editor Use 'editor' for editing log information.\n", 252 " -d CVS_root Overrides $CVSROOT as the root of the CVS tree.\n", 253 " -f Do not use the ~/.cvsrc file.\n", 254#ifdef CLIENT_SUPPORT 255 " -z # Use compression level '#' for net traffic.\n", 256#ifdef ENCRYPTION 257 " -x Encrypt all net traffic.\n", 258#endif 259 " -a Authenticate all net traffic.\n", 260#endif 261 " -s VAR=VAL Set CVS user variable.\n", 262 "(Specify the --help option for a list of other help options)\n", 263 NULL 264}; 265 266 267static int 268set_root_directory (p, ignored) 269 Node *p; 270 void *ignored; 271{ 272 if (current_root == NULL && p->data == NULL) 273 { 274 current_root = p->key; 275 return 1; 276 } 277 return 0; 278} 279 280 281static const char * const* 282cmd_synonyms () 283{ 284 char ** synonyms; 285 char ** line; 286 const struct cmd *c = &cmds[0]; 287 /* Three more for title, "specify --help" line, and NULL. */ 288 int numcmds = 3; 289 290 while (c->fullname != NULL) 291 { 292 numcmds++; 293 c++; 294 } 295 296 synonyms = (char **) xmalloc(numcmds * sizeof(char *)); 297 line = synonyms; 298 *line++ = "CVS command synonyms are:\n"; 299 for (c = &cmds[0]; c->fullname != NULL; c++) 300 { 301 if (c->nick1 || c->nick2) 302 { 303 *line = xmalloc (strlen (c->fullname) 304 + (c->nick1 != NULL ? strlen (c->nick1) : 0) 305 + (c->nick2 != NULL ? strlen (c->nick2) : 0) 306 + 40); 307 sprintf(*line, " %-12s %s %s\n", c->fullname, 308 c->nick1 ? c->nick1 : "", 309 c->nick2 ? c->nick2 : ""); 310 line++; 311 } 312 } 313 *line++ = "(Specify the --help option for a list of other help options)\n"; 314 *line = NULL; 315 316 return (const char * const*) synonyms; /* will never be freed */ 317} 318 319 320unsigned long int 321lookup_command_attribute (cmd_name) 322 char *cmd_name; 323{ 324 unsigned long int ret = 0; 325 326 if (strcmp (cmd_name, "import") != 0) 327 { 328 ret |= CVS_CMD_IGNORE_ADMROOT; 329 } 330 331 332 /* The following commands do not use a checked-out working 333 directory. We conservatively assume that everything else does. 334 Feel free to add to this list if you are _certain_ something 335 something doesn't use the WD. */ 336 if ((strcmp (cmd_name, "checkout") != 0) && 337 (strcmp (cmd_name, "init") != 0) && 338 (strcmp (cmd_name, "login") != 0) && 339 (strcmp (cmd_name, "logout") != 0) && 340 (strcmp (cmd_name, "rdiff") != 0) && 341 (strcmp (cmd_name, "release") != 0) && 342 (strcmp (cmd_name, "rtag") != 0)) 343 { 344 ret |= CVS_CMD_USES_WORK_DIR; 345 } 346 347 348 /* The following commands do not modify the repository; we 349 conservatively assume that everything else does. Feel free to 350 add to this list if you are _certain_ something is safe. */ 351 if ((strcmp (cmd_name, "annotate") != 0) && 352 (strcmp (cmd_name, "checkout") != 0) && 353 (strcmp (cmd_name, "diff") != 0) && 354 (strcmp (cmd_name, "rdiff") != 0) && 355 (strcmp (cmd_name, "update") != 0) && 356 (strcmp (cmd_name, "editors") != 0) && 357 (strcmp (cmd_name, "export") != 0) && 358 (strcmp (cmd_name, "history") != 0) && 359 (strcmp (cmd_name, "log") != 0) && 360 (strcmp (cmd_name, "noop") != 0) && 361 (strcmp (cmd_name, "watchers") != 0) && 362 (strcmp (cmd_name, "release") != 0) && 363 (strcmp (cmd_name, "status") != 0)) 364 { 365 ret |= CVS_CMD_MODIFIES_REPOSITORY; 366 } 367 368 return ret; 369} 370 371 372static RETSIGTYPE 373main_cleanup (sig) 374 int sig; 375{ 376#ifndef DONT_USE_SIGNALS 377 const char *name; 378 char temp[10]; 379 380 switch (sig) 381 { 382#ifdef SIGABRT 383 case SIGABRT: 384 name = "abort"; 385 break; 386#endif 387#ifdef SIGHUP 388 case SIGHUP: 389 name = "hangup"; 390 break; 391#endif 392#ifdef SIGINT 393 case SIGINT: 394 name = "interrupt"; 395 break; 396#endif 397#ifdef SIGQUIT 398 case SIGQUIT: 399 name = "quit"; 400 break; 401#endif 402#ifdef SIGPIPE 403 case SIGPIPE: 404 name = "broken pipe"; 405 break; 406#endif 407#ifdef SIGTERM 408 case SIGTERM: 409 name = "termination"; 410 break; 411#endif 412 default: 413 /* This case should never be reached, because we list above all 414 the signals for which we actually establish a signal handler. */ 415 sprintf (temp, "%d", sig); 416 name = temp; 417 break; 418 } 419 420 error (1, 0, "received %s signal", name); 421#endif /* !DONT_USE_SIGNALS */ 422} 423 424int 425main (argc, argv) 426 int argc; 427 char **argv; 428{ 429 char *CVSroot = CVSROOT_DFLT; 430 char *cp, *end; 431 const struct cmd *cm; 432 int c, err = 0; 433 int tmpdir_update_env, cvs_update_env; 434 int free_CVSroot = 0; 435 int free_Editor = 0; 436 int free_Tmpdir = 0; 437 438 int help = 0; /* Has the user asked for help? This 439 lets us support the `cvs -H cmd' 440 convention to give help for cmd. */ 441 static const char short_options[] = "+QqgrwtnRlvb:T:e:d:Hfz:s:xaU"; 442 static struct option long_options[] = 443 { 444 {"help", 0, NULL, 'H'}, 445 {"version", 0, NULL, 'v'}, 446 {"help-commands", 0, NULL, 1}, 447 {"help-synonyms", 0, NULL, 2}, 448 {"help-options", 0, NULL, 4}, 449 {"allow-root", required_argument, NULL, 3}, 450 {0, 0, 0, 0} 451 }; 452 /* `getopt_long' stores the option index here, but right now we 453 don't use it. */ 454 int option_index = 0; 455 456#ifdef SYSTEM_INITIALIZE 457 /* Hook for OS-specific behavior, for example socket subsystems on 458 NT and OS2 or dealing with windows and arguments on Mac. */ 459 SYSTEM_INITIALIZE (&argc, &argv); 460#endif 461 462#ifdef HAVE_TZSET 463 /* On systems that have tzset (which is almost all the ones I know 464 of), it's a good idea to call it. */ 465 tzset (); 466#endif 467 468 /* 469 * Just save the last component of the path for error messages 470 */ 471 program_path = xstrdup (argv[0]); 472#ifdef ARGV0_NOT_PROGRAM_NAME 473 /* On some systems, e.g. VMS, argv[0] is not the name of the command 474 which the user types to invoke the program. */ 475 program_name = "cvs"; 476#else 477 program_name = last_component (argv[0]); 478#endif 479 480 /* 481 * Query the environment variables up-front, so that 482 * they can be overridden by command line arguments 483 */ 484 cvs_update_env = 0; 485 tmpdir_update_env = *Tmpdir; /* TMPDIR_DFLT must be set */ 486 if ((cp = getenv (TMPDIR_ENV)) != NULL) 487 { 488 Tmpdir = cp; 489 tmpdir_update_env = 0; /* it's already there */ 490 } 491 if ((cp = getenv (EDITOR1_ENV)) != NULL) 492 Editor = cp; 493 else if ((cp = getenv (EDITOR2_ENV)) != NULL) 494 Editor = cp; 495 else if ((cp = getenv (EDITOR3_ENV)) != NULL) 496 Editor = cp; 497 if ((cp = getenv (CVSROOT_ENV)) != NULL) 498 { 499 CVSroot = cp; 500 cvs_update_env = 0; /* it's already there */ 501 } 502 if (getenv (CVSREAD_ENV) != NULL) 503 cvswrite = 0; 504 if (getenv (CVSREADONLYFS_ENV) != NULL) { 505 readonlyfs = 1; 506 logoff = 1; 507 } 508 509 prepend_default_options (getenv ("CVS_OPTIONS"), &argc, &argv); 510 511 /* Set this to 0 to force getopt initialization. getopt() sets 512 this to 1 internally. */ 513 optind = 0; 514 515 /* We have to parse the options twice because else there is no 516 chance to avoid reading the global options from ".cvsrc". Set 517 opterr to 0 for avoiding error messages about invalid options. 518 */ 519 opterr = 0; 520 521 while ((c = getopt_long 522 (argc, argv, short_options, long_options, &option_index)) 523 != EOF) 524 { 525 if (c == 'f') 526 use_cvsrc = 0; 527 } 528 529 /* 530 * Scan cvsrc file for global options. 531 */ 532 if (use_cvsrc) 533 read_cvsrc (&argc, &argv, "cvs"); 534 535 optind = 0; 536 opterr = 1; 537 538 while ((c = getopt_long 539 (argc, argv, short_options, long_options, &option_index)) 540 != EOF) 541 { 542 switch (c) 543 { 544 case 1: 545 /* --help-commands */ 546 usage (cmd_usage); 547 break; 548 case 2: 549 /* --help-synonyms */ 550 usage (cmd_synonyms()); 551 break; 552 case 4: 553 /* --help-options */ 554 usage (opt_usage); 555 break; 556 case 3: 557 /* --allow-root */ 558 root_allow_add (optarg); 559 break; 560 case 'Q': 561 really_quiet = 1; 562 /* FALL THROUGH */ 563 case 'q': 564 quiet = 1; 565 break; 566 case 'r': 567 cvswrite = 0; 568 break; 569 case 'w': 570 cvswrite = 1; 571 break; 572 case 'g': 573 /* 574 * force full group write perms (used for shared checked-out 575 * source trees, see manual page) 576 */ 577 umask(umask(077) & 007); 578 break; 579 case 't': 580 trace = 1; 581 break; 582 case 'R': 583 readonlyfs = 1; 584 logoff = 1; 585 break; 586 case 'n': 587 noexec = 1; 588 case 'l': /* Fall through */ 589 logoff = 1; 590 break; 591 case 'v': 592 (void) fputs ("\n", stdout); 593 version (0, (char **) NULL); 594 (void) fputs ("\n", stdout); 595 (void) fputs ("\ 596Copyright (c) 1989-2000 Brian Berliner, david d `zoo' zuhn, \n\ 597 Jeff Polk, and other authors\n", stdout); 598 (void) fputs ("\n", stdout); 599 (void) fputs ("CVS may be copied only under the terms of the GNU General Public License,\n", stdout); 600 (void) fputs ("a copy of which can be found with the CVS distribution kit.\n", stdout); 601 (void) fputs ("\n", stdout); 602 603 (void) fputs ("Specify the --help option for further information about CVS\n", stdout); 604 605 exit (0); 606 break; 607 case 'b': 608 /* This option used to specify the directory for RCS 609 executables. But since we don't run them any more, 610 this is a noop. Silently ignore it so that .cvsrc 611 and scripts and inetd.conf and such can work with 612 either new or old CVS. */ 613 break; 614 case 'T': 615 Tmpdir = xstrdup (optarg); 616 free_Tmpdir = 1; 617 tmpdir_update_env = 1; /* need to update environment */ 618 break; 619 case 'e': 620 Editor = xstrdup (optarg); 621 free_Editor = 1; 622 break; 623 case 'd': 624 if (CVSroot_cmdline != NULL) 625 free (CVSroot_cmdline); 626 CVSroot_cmdline = xstrdup (optarg); 627 CVSroot = xstrdup (optarg); 628 free_CVSroot = 1; 629 cvs_update_env = 1; /* need to update environment */ 630 break; 631 case 'H': 632 help = 1; 633 break; 634 case 'f': 635 use_cvsrc = 0; /* unnecessary, since we've done it above */ 636 break; 637 case 'z': 638#ifdef CLIENT_SUPPORT 639 gzip_level = atoi (optarg); 640 if (gzip_level < 0 || gzip_level > 9) 641 error (1, 0, 642 "gzip compression level must be between 0 and 9"); 643#endif 644 /* If no CLIENT_SUPPORT, we just silently ignore the gzip 645 level, so that users can have it in their .cvsrc and not 646 cause any trouble. */ 647 break; 648 case 's': 649 variable_set (optarg); 650 break; 651 case 'x': 652#ifdef CLIENT_SUPPORT 653 cvsencrypt = 1; 654#endif /* CLIENT_SUPPORT */ 655 /* If no CLIENT_SUPPORT, ignore -x, so that users can 656 have it in their .cvsrc and not cause any trouble. 657 If no ENCRYPTION, we still accept -x, but issue an 658 error if we are being run as a client. */ 659 break; 660 case 'a': 661#ifdef CLIENT_SUPPORT 662 cvsauthenticate = 1; 663#endif 664 /* If no CLIENT_SUPPORT, ignore -a, so that users can 665 have it in their .cvsrc and not cause any trouble. 666 We will issue an error later if stream 667 authentication is not supported. */ 668 break; 669 case 'U': 670#ifdef SERVER_SUPPORT 671 require_real_user = 1; 672#endif 673 break; 674 case '?': 675 default: 676 usage (usg); 677 } 678 } 679 680 argc -= optind; 681 argv += optind; 682 if (argc < 1) 683 usage (usg); 684 685 686 /* Look up the command name. */ 687 688 command_name = argv[0]; 689 for (cm = cmds; cm->fullname; cm++) 690 { 691 if (cm->nick1 && !strcmp (command_name, cm->nick1)) 692 break; 693 if (cm->nick2 && !strcmp (command_name, cm->nick2)) 694 break; 695 if (!strcmp (command_name, cm->fullname)) 696 break; 697 } 698 699 if (!cm->fullname) 700 { 701 fprintf (stderr, "Unknown command: `%s'\n\n", command_name); 702 usage (cmd_usage); 703 } 704 else 705 command_name = cm->fullname; /* Global pointer for later use */ 706 707 /* This should probably remain a warning, rather than an error, 708 for quite a while. For one thing the version of VC distributed 709 with GNU emacs 19.34 invokes 'cvs rlog' instead of 'cvs log'. */ 710 if (strcmp (argv[0], "rlog") == 0) 711 { 712 error (0, 0, "warning: the rlog command is deprecated"); 713 error (0, 0, "use the synonymous log command instead"); 714 } 715 716 if (help) 717 { 718 argc = -1; /* some functions only check for this */ 719 err = (*(cm->func)) (argc, argv); 720 } 721 else 722 { 723 /* The user didn't ask for help, so go ahead and authenticate, 724 set up CVSROOT, and the rest of it. */ 725 726 /* The UMASK environment variable isn't handled with the 727 others above, since we don't want to signal errors if the 728 user has asked for help. This won't work if somebody adds 729 a command-line flag to set the umask, since we'll have to 730 parse it before we get here. */ 731 732 if ((cp = getenv (CVSUMASK_ENV)) != NULL) 733 { 734 /* FIXME: Should be accepting symbolic as well as numeric mask. */ 735 cvsumask = strtol (cp, &end, 8) & 0777; 736 if (*end != '\0') 737 error (1, errno, "invalid umask value in %s (%s)", 738 CVSUMASK_ENV, cp); 739 } 740 741#if defined (HAVE_KERBEROS) && defined (SERVER_SUPPORT) 742 /* If we are invoked with a single argument "kserver", then we are 743 running as Kerberos server as root. Do the authentication as 744 the very first thing, to minimize the amount of time we are 745 running as root. */ 746 if (strcmp (command_name, "kserver") == 0) 747 { 748 kserver_authenticate_connection (); 749 750 /* Pretend we were invoked as a plain server. */ 751 command_name = "server"; 752 } 753#endif /* HAVE_KERBEROS */ 754 755 756#if (defined(AUTH_SERVER_SUPPORT) || defined (HAVE_GSSAPI)) && defined(SERVER_SUPPORT) 757 if (strcmp (command_name, "pserver") == 0) 758 { 759 /* The reason that --allow-root is not a command option 760 is mainly the comment in server() about how argc,argv 761 might be from .cvsrc. I'm not sure about that, and 762 I'm not sure it is only true of command options, but 763 it seems easier to make it a global option. */ 764 765 /* Gets username and password from client, authenticates, then 766 switches to run as that user and sends an ACK back to the 767 client. */ 768 pserver_authenticate_connection (); 769 770 /* Pretend we were invoked as a plain server. */ 771 command_name = "server"; 772 } 773#endif /* (AUTH_SERVER_SUPPORT || HAVE_GSSAPI) && SERVER_SUPPORT */ 774 775#ifdef SERVER_SUPPORT 776 server_active = strcmp (command_name, "server") == 0; 777#endif 778 779 /* This is only used for writing into the history file. For 780 remote connections, it might be nice to have hostname 781 and/or remote path, on the other hand I'm not sure whether 782 it is worth the trouble. */ 783 784#ifdef SERVER_SUPPORT 785 if (server_active) 786 CurDir = xstrdup ("<remote>"); 787 else 788#endif 789 { 790 CurDir = xgetwd (); 791 if (CurDir == NULL) 792 error (1, errno, "cannot get working directory"); 793 } 794 795 if (Tmpdir == NULL || Tmpdir[0] == '\0') 796 Tmpdir = "/tmp"; 797 798#ifdef HAVE_PUTENV 799 if (tmpdir_update_env) 800 { 801 char *env; 802 env = xmalloc (strlen (TMPDIR_ENV) + strlen (Tmpdir) + 1 + 1); 803 (void) sprintf (env, "%s=%s", TMPDIR_ENV, Tmpdir); 804 (void) putenv (env); 805 /* do not free env, as putenv has control of it */ 806 } 807 { 808 char *env; 809 env = xmalloc (sizeof "CVS_PID=" + 32); /* XXX pid < 10^32 */ 810 (void) sprintf (env, "CVS_PID=%ld", (long) getpid ()); 811 (void) putenv (env); 812 } 813#endif 814 815#ifndef DONT_USE_SIGNALS 816 /* make sure we clean up on error */ 817#ifdef SIGABRT 818 (void) SIG_register (SIGABRT, main_cleanup); 819#endif 820#ifdef SIGHUP 821 (void) SIG_register (SIGHUP, main_cleanup); 822#endif 823#ifdef SIGINT 824 (void) SIG_register (SIGINT, main_cleanup); 825#endif 826#ifdef SIGQUIT 827 (void) SIG_register (SIGQUIT, main_cleanup); 828#endif 829#ifdef SIGPIPE 830 (void) SIG_register (SIGPIPE, main_cleanup); 831#endif 832#ifdef SIGTERM 833 (void) SIG_register (SIGTERM, main_cleanup); 834#endif 835#endif /* !DONT_USE_SIGNALS */ 836 837 gethostname(hostname, sizeof (hostname)); 838 839#ifdef KLUDGE_FOR_WNT_TESTSUITE 840 /* Probably the need for this will go away at some point once 841 we call fflush enough places (e.g. fflush (stdout) in 842 cvs_outerr). */ 843 (void) setvbuf (stdout, (char *) NULL, _IONBF, 0); 844 (void) setvbuf (stderr, (char *) NULL, _IONBF, 0); 845#endif /* KLUDGE_FOR_WNT_TESTSUITE */ 846 847 if (use_cvsrc) 848 read_cvsrc (&argc, &argv, command_name); 849 850#ifdef SERVER_SUPPORT 851 /* Fiddling with CVSROOT doesn't make sense if we're running 852 in server mode, since the client will send the repository 853 directory after the connection is made. */ 854 855 if (!server_active) 856#endif 857 { 858 char *CVSADM_Root; 859 860 /* See if we are able to find a 'better' value for CVSroot 861 in the CVSADM_ROOT directory. */ 862 863 CVSADM_Root = NULL; 864 865 /* "cvs import" shouldn't check CVS/Root; in general it 866 ignores CVS directories and CVS/Root is likely to 867 specify a different repository than the one we are 868 importing to. */ 869 870 if ((lookup_command_attribute (command_name) 871 & CVS_CMD_IGNORE_ADMROOT) 872 873 /* -d overrides CVS/Root, so don't give an error if the 874 latter points to a nonexistent repository. */ 875 && CVSroot_cmdline == NULL) 876 { 877 CVSADM_Root = Name_Root((char *) NULL, (char *) NULL); 878 } 879 880 if (CVSADM_Root != NULL) 881 { 882 if (CVSroot == NULL || !cvs_update_env) 883 { 884 CVSroot = CVSADM_Root; 885 cvs_update_env = 1; /* need to update environment */ 886 } 887 } 888 889 /* Now we've reconciled CVSROOT from the command line, the 890 CVS/Root file, and the environment variable. Do the 891 last sanity checks on the variable. */ 892 893 if (! CVSroot) 894 { 895 error (0, 0, 896 "No CVSROOT specified! Please use the `-d' option"); 897 error (1, 0, 898 "or set the %s environment variable.", CVSROOT_ENV); 899 } 900 901 if (! *CVSroot) 902 { 903 error (0, 0, 904 "CVSROOT is set but empty! Make sure that the"); 905 error (0, 0, 906 "specification of CVSROOT is legal, either via the"); 907 error (0, 0, 908 "`-d' option, the %s environment variable, or the", 909 CVSROOT_ENV); 910 error (1, 0, 911 "CVS/Root file (if any)."); 912 } 913 } 914 915 /* Here begins the big loop over unique cvsroot values. We 916 need to call do_recursion once for each unique value found 917 in CVS/Root. Prime the list with the current value. */ 918 919 /* Create the list. */ 920 assert (root_directories == NULL); 921 root_directories = getlist (); 922 923 /* Prime it. */ 924 if (CVSroot != NULL) 925 { 926 Node *n; 927 n = getnode (); 928 n->type = NT_UNKNOWN; 929 n->key = xstrdup (CVSroot); 930 n->data = NULL; 931 932 if (addnode (root_directories, n)) 933 error (1, 0, "cannot add initial CVSROOT %s", n->key); 934 } 935 936 assert (current_root == NULL); 937 938 /* If we're running the server, we want to execute this main 939 loop once and only once (we won't be serving multiple roots 940 from this connection, so there's no need to do it more than 941 once). To get out of the loop, we perform a "break" at the 942 end of things. */ 943 944 while ( 945#ifdef SERVER_SUPPORT 946 server_active || 947#endif 948 walklist (root_directories, set_root_directory, NULL) 949 ) 950 { 951#ifdef SERVER_SUPPORT 952 /* Fiddling with CVSROOT doesn't make sense if we're running 953 in server mode, since the client will send the repository 954 directory after the connection is made. */ 955 956 if (!server_active) 957#endif 958 { 959 /* Now we're 100% sure that we have a valid CVSROOT 960 variable. Parse it to see if we're supposed to do 961 remote accesses or use a special access method. */ 962 963 if (parse_cvsroot (current_root)) 964 error (1, 0, "Bad CVSROOT."); 965 966 if (trace) 967 error (0, 0, "notice: main loop with CVSROOT=%s", 968 current_root); 969 970 /* 971 * Check to see if the repository exists. 972 */ 973 if (!client_active) 974 { 975 char *path; 976 int save_errno; 977 978 path = xmalloc (strlen (CVSroot_directory) 979 + sizeof (CVSROOTADM) 980 + 20); 981 (void) sprintf (path, "%s/%s", CVSroot_directory, CVSROOTADM); 982 if (!isaccessible (path, R_OK | X_OK)) 983 { 984 save_errno = errno; 985 /* If this is "cvs init", the root need not exist yet. */ 986 if (strcmp (command_name, "init") != 0) 987 { 988 error (1, save_errno, "%s", path); 989 } 990 } 991 free (path); 992 } 993 994#ifdef HAVE_PUTENV 995 /* Update the CVSROOT environment variable if necessary. */ 996 /* FIXME (njc): should we always set this with the CVSROOT from the command line? */ 997 if (cvs_update_env) 998 { 999 static char *prev; 1000 char *env; 1001 env = xmalloc (strlen (CVSROOT_ENV) + strlen (CVSroot) 1002 + 1 + 1); 1003 (void) sprintf (env, "%s=%s", CVSROOT_ENV, CVSroot); 1004 (void) putenv (env); 1005 /* do not free env yet, as putenv has control of it */ 1006 /* but do free the previous value, if any */ 1007 if (prev != NULL) 1008 free (prev); 1009 prev = env; 1010 } 1011#endif 1012 } 1013 1014 /* Parse the CVSROOT/config file, but only for local. For the 1015 server, we parse it after we know $CVSROOT. For the 1016 client, it doesn't get parsed at all, obviously. The 1017 presence of the parse_config call here is not mean to 1018 predetermine whether CVSROOT/config overrides things from 1019 read_cvsrc and other such places or vice versa. That sort 1020 of thing probably needs more thought. */ 1021 if (1 1022#ifdef SERVER_SUPPORT 1023 && !server_active 1024#endif 1025#ifdef CLIENT_SUPPORT 1026 && !client_active 1027#endif 1028 ) 1029 { 1030 /* If there was an error parsing the config file, parse_config 1031 already printed an error. We keep going. Why? Because 1032 if we didn't, then there would be no way to check in a new 1033 CVSROOT/config file to fix the broken one! */ 1034 parse_config (CVSroot_directory); 1035 1036 /* Now is a convenient time to read CVSROOT/options */ 1037 parseopts(CVSroot_directory); 1038 } 1039 1040#ifdef CLIENT_SUPPORT 1041 if (client_active) 1042 { 1043 /* Create a new list for directory names that we've 1044 sent to the server. */ 1045 if (dirs_sent_to_server != NULL) 1046 dellist (&dirs_sent_to_server); 1047 dirs_sent_to_server = getlist (); 1048 } 1049#endif 1050 1051 err = (*(cm->func)) (argc, argv); 1052 1053 /* Mark this root directory as done. When the server is 1054 active, current_root will be NULL -- don't try and 1055 remove it from the list. */ 1056 1057 if (current_root != NULL) 1058 { 1059 Node *n = findnode (root_directories, current_root); 1060 assert (n != NULL); 1061 n->data = (void *) 1; 1062 current_root = NULL; 1063 } 1064 1065#if 0 1066 /* This will not work yet, since it tries to free (void *) 1. */ 1067 dellist (&root_directories); 1068#endif 1069 1070#ifdef SERVER_SUPPORT 1071 if (server_active) 1072 break; 1073#endif 1074 } /* end of loop for cvsroot values */ 1075 1076 } /* end of stuff that gets done if the user DOESN'T ask for help */ 1077 1078 Lock_Cleanup (); 1079 1080 free (program_path); 1081 if (CVSroot_cmdline != NULL) 1082 free (CVSroot_cmdline); 1083 if (free_CVSroot) 1084 free (CVSroot); 1085 if (free_Editor) 1086 free (Editor); 1087 if (free_Tmpdir) 1088 free (Tmpdir); 1089 root_allow_free (); 1090 1091#ifdef SYSTEM_CLEANUP 1092 /* Hook for OS-specific behavior, for example socket subsystems on 1093 NT and OS2 or dealing with windows and arguments on Mac. */ 1094 SYSTEM_CLEANUP (); 1095#endif 1096 1097 /* This is exit rather than return because apparently that keeps 1098 some tools which check for memory leaks happier. */ 1099 exit (err ? EXIT_FAILURE : 0); 1100 /* Keep picky/stupid compilers (e.g. Visual C++ 5.0) happy. */ 1101 return 0; 1102} 1103 1104char * 1105Make_Date (rawdate) 1106 char *rawdate; 1107{ 1108 time_t unixtime; 1109 1110 unixtime = get_date (rawdate, (struct timeb *) NULL); 1111 if (unixtime == (time_t) - 1) 1112 error (1, 0, "Can't parse date/time: %s", rawdate); 1113 return date_from_time_t (unixtime); 1114} 1115 1116/* Convert a time_t to an RCS format date. This is mainly for the 1117 use of "cvs history", because the CVSROOT/history file contains 1118 time_t format dates; most parts of CVS will want to avoid using 1119 time_t's directly, and instead use RCS_datecmp, Make_Date, &c. 1120 Assuming that the time_t is in GMT (as it generally should be), 1121 then the result will be in GMT too. 1122 1123 Returns a newly malloc'd string. */ 1124 1125char * 1126date_from_time_t (unixtime) 1127 time_t unixtime; 1128{ 1129 struct tm *ftm; 1130 char date[MAXDATELEN]; 1131 char *ret; 1132 1133 ftm = gmtime (&unixtime); 1134 if (ftm == NULL) 1135 /* This is a system, like VMS, where the system clock is in local 1136 time. Hopefully using localtime here matches the "zero timezone" 1137 hack I added to get_date (get_date of course being the relevant 1138 issue for Make_Date, and for history.c too I think). */ 1139 ftm = localtime (&unixtime); 1140 1141 (void) sprintf (date, DATEFORM, 1142 ftm->tm_year + (ftm->tm_year < 100 ? 0 : 1900), 1143 ftm->tm_mon + 1, ftm->tm_mday, ftm->tm_hour, 1144 ftm->tm_min, ftm->tm_sec); 1145 ret = xstrdup (date); 1146 return (ret); 1147} 1148 1149/* Convert a date to RFC822/1123 format. This is used in contexts like 1150 dates to send in the protocol; it should not vary based on locale or 1151 other such conventions for users. We should have another routine which 1152 does that kind of thing. 1153 1154 The SOURCE date is in our internal RCS format. DEST should point to 1155 storage managed by the caller, at least MAXDATELEN characters. */ 1156void 1157date_to_internet (dest, source) 1158 char *dest; 1159 char *source; 1160{ 1161 int year, month, day, hour, minute, second; 1162 1163 /* Just to reiterate, these strings are from RFC822 and do not vary 1164 according to locale. */ 1165 static const char *const month_names[] = 1166 {"Jan", "Feb", "Mar", "Apr", "May", "Jun", 1167 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; 1168 1169 if (sscanf (source, SDATEFORM, 1170 &year, &month, &day, &hour, &minute, &second) 1171 != 6) 1172 /* Is there a better way to handle errors here? I made this 1173 non-fatal in case we are called from the code which can't 1174 deal with fatal errors. */ 1175 error (0, 0, "internal error: bad date %s", source); 1176 1177 /* Always send a four digit year. */ 1178 if (year < 100) 1179 year += 1900; 1180 1181 sprintf (dest, "%d %s %d %02d:%02d:%02d -0000", day, 1182 month < 1 || month > 12 ? "???" : month_names[month - 1], 1183 year, hour, minute, second); 1184} 1185 1186void 1187usage (cpp) 1188 register const char *const *cpp; 1189{ 1190 (void) fprintf (stderr, *cpp++, program_name, command_name); 1191 for (; *cpp; cpp++) 1192 (void) fprintf (stderr, *cpp); 1193 error_exit (); 1194} 1195 1196void 1197parseopts(root) 1198 const char *root; 1199{ 1200 char path[PATH_MAX]; 1201 int save_errno; 1202 char buf[1024]; 1203 const char *p; 1204 char *q; 1205 FILE *fp; 1206 1207 if (root == NULL) { 1208 printf("no CVSROOT in parseopts\n"); 1209 return; 1210 } 1211 p = strchr (root, ':'); 1212 if (p) 1213 p++; 1214 else 1215 p = root; 1216 if (p == NULL) { 1217 printf("mangled CVSROOT in parseopts\n"); 1218 return; 1219 } 1220 (void) sprintf (path, "%s/%s/%s", p, CVSROOTADM, CVSROOTADM_OPTIONS); 1221 if ((fp = fopen(path, "r")) != NULL) { 1222 while (fgets(buf, sizeof buf, fp) != NULL) { 1223 if (buf[0] == '#') 1224 continue; 1225 q = strrchr(buf, '\n'); 1226 if (q) 1227 *q = '\0'; 1228 1229 if (!strncmp(buf, "tag=", 4)) { 1230 char *what; 1231 char *rcs_localid; 1232 1233 rcs_localid = buf + 4; 1234 RCS_setlocalid(rcs_localid); 1235 } 1236 if (!strncmp(buf, "tagexpand=", 10)) { 1237 char *what; 1238 char *rcs_incexc; 1239 1240 rcs_incexc = buf + 10; 1241 RCS_setincexc(rcs_incexc); 1242 } 1243 /* 1244 * OpenBSD has a "umask=" and "dlimit=" command, we silently 1245 * ignore them here since they are not much use to us. cvsumask 1246 * defaults to 002 already, and the dlimit (data size limit) 1247 * should really be handled elsewhere (eg: login.conf). 1248 */ 1249 } 1250 fclose(fp); 1251 } 1252} 1253