main.c revision 107487
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 107487 2002-12-02 03:17:49Z 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. 72 * 73 * Now static. FIXME - this variable should be removable (well, localizable) 74 * with a little more work. 75 */ 76static char *current_root = NULL; 77 78 79static const struct cmd 80{ 81 char *fullname; /* Full name of the function (e.g. "commit") */ 82 83 /* Synonyms for the command, nick1 and nick2. We supply them 84 mostly for two reasons: (1) CVS has always supported them, and 85 we need to maintain compatibility, (2) if there is a need for a 86 version which is shorter than the fullname, for ease in typing. 87 Synonyms have the disadvantage that people will see "new" and 88 then have to think about it, or look it up, to realize that is 89 the operation they know as "add". Also, this means that one 90 cannot create a command "cvs new" with a different meaning. So 91 new synonyms are probably best used sparingly, and where used 92 should be abbreviations of the fullname (preferably consisting 93 of the first 2 or 3 or so letters). 94 95 One thing that some systems do is to recognize any unique 96 abbreviation, for example "annotat" "annota", etc., for 97 "annotate". The problem with this is that scripts and user 98 habits will expect a certain abbreviation to be unique, and in 99 a future release of CVS it may not be. So it is better to 100 accept only an explicit list of abbreviations and plan on 101 supporting them in the future as well as now. */ 102 103 char *nick1; 104 char *nick2; 105 106 int (*func) (); /* Function takes (argc, argv) arguments. */ 107 unsigned long attr; /* Attributes. */ 108} cmds[] = 109 110{ 111 { "add", "ad", "new", add, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, 112 { "admin", "adm", "rcs", admin, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, 113 { "annotate", "ann", NULL, annotate, CVS_CMD_USES_WORK_DIR }, 114 { "checkout", "co", "get", checkout, 0 }, 115 { "commit", "ci", "com", commit, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, 116 { "diff", "di", "dif", diff, CVS_CMD_USES_WORK_DIR }, 117 { "edit", NULL, NULL, edit, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, 118 { "editors", NULL, NULL, editors, CVS_CMD_USES_WORK_DIR }, 119 { "export", "exp", "ex", checkout, CVS_CMD_USES_WORK_DIR }, 120 { "history", "hi", "his", history, CVS_CMD_USES_WORK_DIR }, 121 { "import", "im", "imp", import, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR | CVS_CMD_IGNORE_ADMROOT}, 122 { "init", NULL, NULL, init, CVS_CMD_MODIFIES_REPOSITORY }, 123#if defined (HAVE_KERBEROS) && defined (SERVER_SUPPORT) 124 { "kserver", NULL, NULL, server, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, /* placeholder */ 125#endif 126 { "log", "lo", NULL, cvslog, CVS_CMD_USES_WORK_DIR }, 127#ifdef AUTH_CLIENT_SUPPORT 128 { "login", "logon", "lgn", login, 0 }, 129 { "logout", NULL, NULL, logout, 0 }, 130#endif /* AUTH_CLIENT_SUPPORT */ 131#if (defined(AUTH_SERVER_SUPPORT) || defined (HAVE_GSSAPI)) && defined(SERVER_SUPPORT) 132 { "pserver", NULL, NULL, server, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, /* placeholder */ 133#endif 134 { "rannotate","rann", "ra", annotate, 0 }, 135 { "rdiff", "patch", "pa", patch, 0 }, 136 { "release", "re", "rel", release, 0 }, 137 { "remove", "rm", "delete", cvsremove, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, 138 { "rlog", "rl", NULL, cvslog, 0 }, 139 { "rtag", "rt", "rfreeze", cvstag, CVS_CMD_MODIFIES_REPOSITORY }, 140#ifdef SERVER_SUPPORT 141 { "server", NULL, NULL, server, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, 142#endif 143 { "status", "st", "stat", cvsstatus, CVS_CMD_USES_WORK_DIR }, 144 { "tag", "ta", "freeze", cvstag, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, 145 { "unedit", NULL, NULL, unedit, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, 146 { "update", "up", "upd", update, CVS_CMD_USES_WORK_DIR }, 147 { "version", "ve", "ver", version, 0 }, 148 { "watch", NULL, NULL, watch, CVS_CMD_MODIFIES_REPOSITORY | CVS_CMD_USES_WORK_DIR }, 149 { "watchers", NULL, NULL, watchers, CVS_CMD_USES_WORK_DIR }, 150 { NULL, NULL, NULL, NULL, 0 }, 151}; 152 153static const char *const usg[] = 154{ 155 /* CVS usage messages never have followed the GNU convention of 156 putting metavariables in uppercase. I don't know whether that 157 is a good convention or not, but if it changes it would have to 158 change in all the usage messages. For now, they consistently 159 use lowercase, as far as I know. Punctuation is pretty funky, 160 though. Sometimes they use none, as here. Sometimes they use 161 single quotes (not the TeX-ish `' stuff), as in --help-options. 162 Sometimes they use double quotes, as in cvs -H add. 163 164 Most (not all) of the usage messages seem to have periods at 165 the end of each line. I haven't tried to duplicate this style 166 in --help as it is a rather different format from the rest. */ 167 168 "Usage: %s [cvs-options] command [command-options-and-arguments]\n", 169 " where cvs-options are -q, -n, etc.\n", 170 " (specify --help-options for a list of options)\n", 171 " where command is add, admin, etc.\n", 172 " (specify --help-commands for a list of commands\n", 173 " or --help-synonyms for a list of command synonyms)\n", 174 " where command-options-and-arguments depend on the specific command\n", 175 " (specify -H followed by a command name for command-specific help)\n", 176 " Specify --help to receive this message\n", 177 "\n", 178 179 /* Some people think that a bug-reporting address should go here. IMHO, 180 the web sites are better because anything else is very likely to go 181 obsolete in the years between a release and when someone might be 182 reading this help. Besides, we could never adequately discuss 183 bug reporting in a concise enough way to put in a help message. */ 184 185 /* I was going to put this at the top, but usage() wants the %s to 186 be in the first line. */ 187 "The Concurrent Versions System (CVS) is a tool for version control.\n", 188 /* I really don't think I want to try to define "version control" 189 in one line. I'm not sure one can get more concise than the 190 paragraph in ../cvs.spec without assuming the reader knows what 191 version control means. */ 192 193 "For CVS updates and additional information, see\n", 194 " the CVS home page at http://www.cvshome.org/ or\n", 195 " Pascal Molli's CVS site at http://www.loria.fr/~molli/cvs-index.html\n", 196 NULL, 197}; 198 199static const char *const cmd_usage[] = 200{ 201 "CVS commands are:\n", 202 " add Add a new file/directory to the repository\n", 203 " admin Administration front end for rcs\n", 204 " annotate Show last revision where each line was modified\n", 205 " checkout Checkout sources for editing\n", 206 " commit Check files into the repository\n", 207 " diff Show differences between revisions\n", 208 " edit Get ready to edit a watched file\n", 209 " editors See who is editing a watched file\n", 210 " export Export sources from CVS, similar to checkout\n", 211 " history Show repository access history\n", 212 " import Import sources into CVS, using vendor branches\n", 213 " init Create a CVS repository if it doesn't exist\n", 214#if defined (HAVE_KERBEROS) && defined (SERVER_SUPPORT) 215 " kserver Kerberos server mode\n", 216#endif 217 " log Print out history information for files\n", 218#ifdef AUTH_CLIENT_SUPPORT 219 " login Prompt for password for authenticating server\n", 220 " logout Removes entry in .cvspass for remote repository\n", 221#endif /* AUTH_CLIENT_SUPPORT */ 222#if (defined(AUTH_SERVER_SUPPORT) || defined (HAVE_GSSAPI)) && defined(SERVER_SUPPORT) 223 " pserver Password server mode\n", 224#endif 225 " rannotate Show last revision where each line of module was modified\n", 226 " rdiff Create 'patch' format diffs between releases\n", 227 " release Indicate that a Module is no longer in use\n", 228 " remove Remove an entry from the repository\n", 229 " rlog Print out history information for a module\n", 230 " rtag Add a symbolic tag to a module\n", 231#ifdef SERVER_SUPPORT 232 " server Server mode\n", 233#endif 234 " status Display status information on checked out files\n", 235 " tag Add a symbolic tag to checked out version of files\n", 236 " unedit Undo an edit command\n", 237 " update Bring work tree in sync with repository\n", 238 " version Show current CVS version(s)\n", 239 " watch Set watches\n", 240 " watchers See who is watching a file\n", 241 "(Specify the --help option for a list of other help options)\n", 242 NULL, 243}; 244 245static const char *const opt_usage[] = 246{ 247 /* Omit -b because it is just for compatibility. */ 248 "CVS global options (specified before the command name) are:\n", 249 " -H Displays usage information for command.\n", 250 " -Q Cause CVS to be really quiet.\n", 251 " -q Cause CVS to be somewhat quiet.\n", 252 " -r Make checked-out files read-only.\n", 253 " -w Make checked-out files read-write (default).\n", 254 " -g Force group-write perms on checked-out files.\n", 255 " -l Turn history logging off.\n", 256 " -n Do not execute anything that will change the disk.\n", 257 " -t Show trace of program execution -- try with -n.\n", 258 " -R Assume repository is read-only, such as CDROM\n", 259 " -v CVS version and copyright.\n", 260 " -T tmpdir Use 'tmpdir' for temporary files.\n", 261 " -e editor Use 'editor' for editing log information.\n", 262 " -d CVS_root Overrides $CVSROOT as the root of the CVS tree.\n", 263 " -f Do not use the ~/.cvsrc file.\n", 264#ifdef CLIENT_SUPPORT 265 " -z # Use compression level '#' for net traffic.\n", 266#ifdef ENCRYPTION 267 " -x Encrypt all net traffic.\n", 268#endif 269 " -a Authenticate all net traffic.\n", 270#endif 271 " -s VAR=VAL Set CVS user variable.\n", 272 "(Specify the --help option for a list of other help options)\n", 273 NULL 274}; 275 276 277static int 278set_root_directory (p, ignored) 279 Node *p; 280 void *ignored; 281{ 282 if (current_root == NULL && p->data == NULL) 283 { 284 current_root = p->key; 285 return 1; 286 } 287 return 0; 288} 289 290 291static const char * const* 292cmd_synonyms () 293{ 294 char ** synonyms; 295 char ** line; 296 const struct cmd *c = &cmds[0]; 297 /* Three more for title, "specify --help" line, and NULL. */ 298 int numcmds = 3; 299 300 while (c->fullname != NULL) 301 { 302 numcmds++; 303 c++; 304 } 305 306 synonyms = (char **) xmalloc(numcmds * sizeof(char *)); 307 line = synonyms; 308 *line++ = "CVS command synonyms are:\n"; 309 for (c = &cmds[0]; c->fullname != NULL; c++) 310 { 311 if (c->nick1 || c->nick2) 312 { 313 *line = xmalloc (strlen (c->fullname) 314 + (c->nick1 != NULL ? strlen (c->nick1) : 0) 315 + (c->nick2 != NULL ? strlen (c->nick2) : 0) 316 + 40); 317 sprintf(*line, " %-12s %s %s\n", c->fullname, 318 c->nick1 ? c->nick1 : "", 319 c->nick2 ? c->nick2 : ""); 320 line++; 321 } 322 } 323 *line++ = "(Specify the --help option for a list of other help options)\n"; 324 *line = NULL; 325 326 return (const char * const*) synonyms; /* will never be freed */ 327} 328 329 330unsigned long int 331lookup_command_attribute (cmd_name) 332 char *cmd_name; 333{ 334 const struct cmd *cm; 335 336 for (cm = cmds; cm->fullname; cm++) 337 { 338 if (strcmp (cmd_name, cm->fullname) == 0) 339 break; 340 } 341 if (!cm->fullname) 342 error (1, 0, "unknown command: %s", cmd_name); 343 return cm->attr; 344} 345 346 347static RETSIGTYPE 348main_cleanup (sig) 349 int sig; 350{ 351#ifndef DONT_USE_SIGNALS 352 const char *name; 353 char temp[10]; 354 355 switch (sig) 356 { 357#ifdef SIGABRT 358 case SIGABRT: 359 name = "abort"; 360 break; 361#endif 362#ifdef SIGHUP 363 case SIGHUP: 364 name = "hangup"; 365 break; 366#endif 367#ifdef SIGINT 368 case SIGINT: 369 name = "interrupt"; 370 break; 371#endif 372#ifdef SIGQUIT 373 case SIGQUIT: 374 name = "quit"; 375 break; 376#endif 377#ifdef SIGPIPE 378 case SIGPIPE: 379 name = "broken pipe"; 380 break; 381#endif 382#ifdef SIGTERM 383 case SIGTERM: 384 name = "termination"; 385 break; 386#endif 387 default: 388 /* This case should never be reached, because we list above all 389 the signals for which we actually establish a signal handler. */ 390 sprintf (temp, "%d", sig); 391 name = temp; 392 break; 393 } 394 395 error (1, 0, "received %s signal", name); 396#endif /* !DONT_USE_SIGNALS */ 397} 398 399int 400main (argc, argv) 401 int argc; 402 char **argv; 403{ 404 char *CVSroot = CVSROOT_DFLT; 405 char *cp, *end; 406 const struct cmd *cm; 407 int c, err = 0; 408 int tmpdir_update_env, cvs_update_env; 409 int free_CVSroot = 0; 410 int free_Editor = 0; 411 int free_Tmpdir = 0; 412 413 int help = 0; /* Has the user asked for help? This 414 lets us support the `cvs -H cmd' 415 convention to give help for cmd. */ 416 static const char short_options[] = "+QqgrwtnRlvb:T:e:d:Hfz:s:xaU"; 417 static struct option long_options[] = 418 { 419 {"help", 0, NULL, 'H'}, 420 {"version", 0, NULL, 'v'}, 421 {"help-commands", 0, NULL, 1}, 422 {"help-synonyms", 0, NULL, 2}, 423 {"help-options", 0, NULL, 4}, 424 {"allow-root", required_argument, NULL, 3}, 425 {0, 0, 0, 0} 426 }; 427 /* `getopt_long' stores the option index here, but right now we 428 don't use it. */ 429 int option_index = 0; 430 431#ifdef SYSTEM_INITIALIZE 432 /* Hook for OS-specific behavior, for example socket subsystems on 433 NT and OS2 or dealing with windows and arguments on Mac. */ 434 SYSTEM_INITIALIZE (&argc, &argv); 435#endif 436 437#ifdef HAVE_TZSET 438 /* On systems that have tzset (which is almost all the ones I know 439 of), it's a good idea to call it. */ 440 tzset (); 441#endif 442 443 /* 444 * Just save the last component of the path for error messages 445 */ 446 program_path = xstrdup (argv[0]); 447#ifdef ARGV0_NOT_PROGRAM_NAME 448 /* On some systems, e.g. VMS, argv[0] is not the name of the command 449 which the user types to invoke the program. */ 450 program_name = "cvs"; 451#else 452 program_name = last_component (argv[0]); 453#endif 454 455 /* 456 * Query the environment variables up-front, so that 457 * they can be overridden by command line arguments 458 */ 459 cvs_update_env = 0; 460 tmpdir_update_env = *Tmpdir; /* TMPDIR_DFLT must be set */ 461 if ((cp = getenv (TMPDIR_ENV)) != NULL) 462 { 463 Tmpdir = cp; 464 tmpdir_update_env = 0; /* it's already there */ 465 } 466 if ((cp = getenv (EDITOR1_ENV)) != NULL) 467 Editor = cp; 468 else if ((cp = getenv (EDITOR2_ENV)) != NULL) 469 Editor = cp; 470 else if ((cp = getenv (EDITOR3_ENV)) != NULL) 471 Editor = cp; 472 if ((cp = getenv (CVSROOT_ENV)) != NULL) 473 { 474 CVSroot = cp; 475 cvs_update_env = 0; /* it's already there */ 476 } 477 if (getenv (CVSREAD_ENV) != NULL) 478 cvswrite = 0; 479 if (getenv (CVSREADONLYFS_ENV) != NULL) { 480 readonlyfs = 1; 481 logoff = 1; 482 } 483 484 prepend_default_options (getenv ("CVS_OPTIONS"), &argc, &argv); 485 486 /* Set this to 0 to force getopt initialization. getopt() sets 487 this to 1 internally. */ 488 optind = 0; 489 490 /* We have to parse the options twice because else there is no 491 chance to avoid reading the global options from ".cvsrc". Set 492 opterr to 0 for avoiding error messages about invalid options. 493 */ 494 opterr = 0; 495 496 while ((c = getopt_long 497 (argc, argv, short_options, long_options, &option_index)) 498 != EOF) 499 { 500 if (c == 'f') 501 use_cvsrc = 0; 502 } 503 504 /* 505 * Scan cvsrc file for global options. 506 */ 507 if (use_cvsrc) 508 read_cvsrc (&argc, &argv, "cvs"); 509 510 optind = 0; 511 opterr = 1; 512 513 while ((c = getopt_long 514 (argc, argv, short_options, long_options, &option_index)) 515 != EOF) 516 { 517 switch (c) 518 { 519 case 1: 520 /* --help-commands */ 521 usage (cmd_usage); 522 break; 523 case 2: 524 /* --help-synonyms */ 525 usage (cmd_synonyms()); 526 break; 527 case 4: 528 /* --help-options */ 529 usage (opt_usage); 530 break; 531 case 3: 532 /* --allow-root */ 533 root_allow_add (optarg); 534 break; 535 case 'Q': 536 really_quiet = 1; 537 /* FALL THROUGH */ 538 case 'q': 539 quiet = 1; 540 break; 541 case 'r': 542 cvswrite = 0; 543 break; 544 case 'w': 545 cvswrite = 1; 546 break; 547 case 'g': 548 /* 549 * force full group write perms (used for shared checked-out 550 * source trees, see manual page) 551 */ 552 umask(umask(077) & 007); 553 break; 554 case 't': 555 trace = 1; 556 break; 557 case 'R': 558 readonlyfs = 1; 559 logoff = 1; 560 break; 561 case 'n': 562 noexec = 1; 563 case 'l': /* Fall through */ 564 logoff = 1; 565 break; 566 case 'v': 567 (void) fputs ("\n", stdout); 568 version (0, (char **) NULL); 569 (void) fputs ("\n", stdout); 570 (void) fputs ("\ 571Copyright (c) 1989-2002 Brian Berliner, david d `zoo' zuhn, \n\ 572 Jeff Polk, and other authors\n", stdout); 573 (void) fputs ("\n", stdout); 574 (void) fputs ("CVS may be copied only under the terms of the GNU General Public License,\n", stdout); 575 (void) fputs ("a copy of which can be found with the CVS distribution kit.\n", stdout); 576 (void) fputs ("\n", stdout); 577 578 (void) fputs ("Specify the --help option for further information about CVS\n", stdout); 579 580 exit (0); 581 break; 582 case 'b': 583 /* This option used to specify the directory for RCS 584 executables. But since we don't run them any more, 585 this is a noop. Silently ignore it so that .cvsrc 586 and scripts and inetd.conf and such can work with 587 either new or old CVS. */ 588 break; 589 case 'T': 590 Tmpdir = xstrdup (optarg); 591 free_Tmpdir = 1; 592 tmpdir_update_env = 1; /* need to update environment */ 593 break; 594 case 'e': 595 Editor = xstrdup (optarg); 596 free_Editor = 1; 597 break; 598 case 'd': 599 if (CVSroot_cmdline != NULL) 600 free (CVSroot_cmdline); 601 CVSroot_cmdline = xstrdup (optarg); 602 if (free_CVSroot) 603 free (CVSroot); 604 CVSroot = xstrdup (optarg); 605 free_CVSroot = 1; 606 cvs_update_env = 1; /* need to update environment */ 607 break; 608 case 'H': 609 help = 1; 610 break; 611 case 'f': 612 use_cvsrc = 0; /* unnecessary, since we've done it above */ 613 break; 614 case 'z': 615#ifdef CLIENT_SUPPORT 616 gzip_level = atoi (optarg); 617 if (gzip_level < 0 || gzip_level > 9) 618 error (1, 0, 619 "gzip compression level must be between 0 and 9"); 620#endif 621 /* If no CLIENT_SUPPORT, we just silently ignore the gzip 622 level, so that users can have it in their .cvsrc and not 623 cause any trouble. */ 624 break; 625 case 's': 626 variable_set (optarg); 627 break; 628 case 'x': 629#ifdef CLIENT_SUPPORT 630 cvsencrypt = 1; 631#endif /* CLIENT_SUPPORT */ 632 /* If no CLIENT_SUPPORT, ignore -x, so that users can 633 have it in their .cvsrc and not cause any trouble. 634 If no ENCRYPTION, we still accept -x, but issue an 635 error if we are being run as a client. */ 636 break; 637 case 'a': 638#ifdef CLIENT_SUPPORT 639 cvsauthenticate = 1; 640#endif 641 /* If no CLIENT_SUPPORT, ignore -a, so that users can 642 have it in their .cvsrc and not cause any trouble. 643 We will issue an error later if stream 644 authentication is not supported. */ 645 break; 646 case 'U': 647#ifdef SERVER_SUPPORT 648 require_real_user = 1; 649#endif 650 break; 651 case '?': 652 default: 653 usage (usg); 654 } 655 } 656 657 argc -= optind; 658 argv += optind; 659 if (argc < 1) 660 usage (usg); 661 662 663 /* Look up the command name. */ 664 665 command_name = argv[0]; 666 for (cm = cmds; cm->fullname; cm++) 667 { 668 if (cm->nick1 && !strcmp (command_name, cm->nick1)) 669 break; 670 if (cm->nick2 && !strcmp (command_name, cm->nick2)) 671 break; 672 if (!strcmp (command_name, cm->fullname)) 673 break; 674 } 675 676 if (!cm->fullname) 677 { 678 fprintf (stderr, "Unknown command: `%s'\n\n", command_name); 679 usage (cmd_usage); 680 } 681 else 682 command_name = cm->fullname; /* Global pointer for later use */ 683 684 if (help) 685 { 686 argc = -1; /* some functions only check for this */ 687 err = (*(cm->func)) (argc, argv); 688 } 689 else 690 { 691 /* The user didn't ask for help, so go ahead and authenticate, 692 set up CVSROOT, and the rest of it. */ 693 694 /* The UMASK environment variable isn't handled with the 695 others above, since we don't want to signal errors if the 696 user has asked for help. This won't work if somebody adds 697 a command-line flag to set the umask, since we'll have to 698 parse it before we get here. */ 699 700 if ((cp = getenv (CVSUMASK_ENV)) != NULL) 701 { 702 /* FIXME: Should be accepting symbolic as well as numeric mask. */ 703 cvsumask = strtol (cp, &end, 8) & 0777; 704 if (*end != '\0') 705 error (1, errno, "invalid umask value in %s (%s)", 706 CVSUMASK_ENV, cp); 707 } 708 709#ifdef SERVER_SUPPORT 710 711# ifdef HAVE_KERBEROS 712 /* If we are invoked with a single argument "kserver", then we are 713 running as Kerberos server as root. Do the authentication as 714 the very first thing, to minimize the amount of time we are 715 running as root. */ 716 if (strcmp (command_name, "kserver") == 0) 717 { 718 kserver_authenticate_connection (); 719 720 /* Pretend we were invoked as a plain server. */ 721 command_name = "server"; 722 } 723# endif /* HAVE_KERBEROS */ 724 725 726# if defined (AUTH_SERVER_SUPPORT) || defined (HAVE_GSSAPI) 727 if (strcmp (command_name, "pserver") == 0) 728 { 729 /* The reason that --allow-root is not a command option 730 is mainly the comment in server() about how argc,argv 731 might be from .cvsrc. I'm not sure about that, and 732 I'm not sure it is only true of command options, but 733 it seems easier to make it a global option. */ 734 735 /* Gets username and password from client, authenticates, then 736 switches to run as that user and sends an ACK back to the 737 client. */ 738 pserver_authenticate_connection (); 739 740 /* Pretend we were invoked as a plain server. */ 741 command_name = "server"; 742 } 743# endif /* AUTH_SERVER_SUPPORT || HAVE_GSSAPI */ 744 745 server_active = strcmp (command_name, "server") == 0; 746 747#endif /* SERVER_SUPPORT */ 748 749 /* This is only used for writing into the history file. For 750 remote connections, it might be nice to have hostname 751 and/or remote path, on the other hand I'm not sure whether 752 it is worth the trouble. */ 753 754#ifdef SERVER_SUPPORT 755 if (server_active) 756 CurDir = xstrdup ("<remote>"); 757 else 758#endif 759 { 760 CurDir = xgetwd (); 761 if (CurDir == NULL) 762 error (1, errno, "cannot get working directory"); 763 } 764 765 if (Tmpdir == NULL || Tmpdir[0] == '\0') 766 Tmpdir = "/tmp"; 767 768#ifdef HAVE_PUTENV 769 if (tmpdir_update_env) 770 { 771 char *env; 772 env = xmalloc (strlen (TMPDIR_ENV) + strlen (Tmpdir) + 1 + 1); 773 (void) sprintf (env, "%s=%s", TMPDIR_ENV, Tmpdir); 774 (void) putenv (env); 775 /* do not free env, as putenv has control of it */ 776 } 777 { 778 char *env; 779 env = xmalloc (sizeof "CVS_PID=" + 32); /* XXX pid < 10^32 */ 780 (void) sprintf (env, "CVS_PID=%ld", (long) getpid ()); 781 (void) putenv (env); 782 } 783#endif 784 785#ifndef DONT_USE_SIGNALS 786 /* make sure we clean up on error */ 787#ifdef SIGABRT 788 (void) SIG_register (SIGABRT, main_cleanup); 789#endif 790#ifdef SIGHUP 791 (void) SIG_register (SIGHUP, main_cleanup); 792#endif 793#ifdef SIGINT 794 (void) SIG_register (SIGINT, main_cleanup); 795#endif 796#ifdef SIGQUIT 797 (void) SIG_register (SIGQUIT, main_cleanup); 798#endif 799#ifdef SIGPIPE 800 (void) SIG_register (SIGPIPE, main_cleanup); 801#endif 802#ifdef SIGTERM 803 (void) SIG_register (SIGTERM, main_cleanup); 804#endif 805#endif /* !DONT_USE_SIGNALS */ 806 807 gethostname(hostname, sizeof (hostname)); 808 809#ifdef KLUDGE_FOR_WNT_TESTSUITE 810 /* Probably the need for this will go away at some point once 811 we call fflush enough places (e.g. fflush (stdout) in 812 cvs_outerr). */ 813 (void) setvbuf (stdout, (char *) NULL, _IONBF, 0); 814 (void) setvbuf (stderr, (char *) NULL, _IONBF, 0); 815#endif /* KLUDGE_FOR_WNT_TESTSUITE */ 816 817 if (use_cvsrc) 818 read_cvsrc (&argc, &argv, command_name); 819 820#ifdef SERVER_SUPPORT 821 /* Fiddling with CVSROOT doesn't make sense if we're running 822 in server mode, since the client will send the repository 823 directory after the connection is made. */ 824 825 if (!server_active) 826#endif 827 { 828 char *CVSADM_Root; 829 830 /* See if we are able to find a 'better' value for CVSroot 831 in the CVSADM_ROOT directory. */ 832 833 CVSADM_Root = NULL; 834 835 /* "cvs import" shouldn't check CVS/Root; in general it 836 ignores CVS directories and CVS/Root is likely to 837 specify a different repository than the one we are 838 importing to. */ 839 840 if (!(cm->attr & CVS_CMD_IGNORE_ADMROOT) 841 842 /* -d overrides CVS/Root, so don't give an error if the 843 latter points to a nonexistent repository. */ 844 && CVSroot_cmdline == NULL) 845 { 846 CVSADM_Root = Name_Root((char *) NULL, (char *) NULL); 847 } 848 849 if (CVSADM_Root != NULL) 850 { 851 if (CVSroot == NULL || !cvs_update_env) 852 { 853 CVSroot = CVSADM_Root; 854 cvs_update_env = 1; /* need to update environment */ 855 } 856 } 857 858 /* Now we've reconciled CVSROOT from the command line, the 859 CVS/Root file, and the environment variable. Do the 860 last sanity checks on the variable. */ 861 862 if (! CVSroot) 863 { 864 error (0, 0, 865 "No CVSROOT specified! Please use the `-d' option"); 866 error (1, 0, 867 "or set the %s environment variable.", CVSROOT_ENV); 868 } 869 870 if (! *CVSroot) 871 { 872 error (0, 0, 873 "CVSROOT is set but empty! Make sure that the"); 874 error (0, 0, 875 "specification of CVSROOT is valid, either via the"); 876 error (0, 0, 877 "`-d' option, the %s environment variable, or the", 878 CVSROOT_ENV); 879 error (1, 0, 880 "CVS/Root file (if any)."); 881 } 882 } 883 884 /* Here begins the big loop over unique cvsroot values. We 885 need to call do_recursion once for each unique value found 886 in CVS/Root. Prime the list with the current value. */ 887 888 /* Create the list. */ 889 assert (root_directories == NULL); 890 root_directories = getlist (); 891 892 /* Prime it. */ 893 if (CVSroot != NULL) 894 { 895 Node *n; 896 n = getnode (); 897 n->type = NT_UNKNOWN; 898 n->key = xstrdup (CVSroot); 899 n->data = NULL; 900 901 if (addnode (root_directories, n)) 902 error (1, 0, "cannot add initial CVSROOT %s", n->key); 903 } 904 905 assert (current_root == NULL); 906 907 /* If we're running the server, we want to execute this main 908 loop once and only once (we won't be serving multiple roots 909 from this connection, so there's no need to do it more than 910 once). To get out of the loop, we perform a "break" at the 911 end of things. */ 912 913 while ( 914#ifdef SERVER_SUPPORT 915 server_active || 916#endif 917 walklist (root_directories, set_root_directory, NULL) 918 ) 919 { 920#ifdef SERVER_SUPPORT 921 /* Fiddling with CVSROOT doesn't make sense if we're running 922 in server mode, since the client will send the repository 923 directory after the connection is made. */ 924 925 if (!server_active) 926#endif 927 { 928 /* Now we're 100% sure that we have a valid CVSROOT 929 variable. Parse it to see if we're supposed to do 930 remote accesses or use a special access method. */ 931 932 if (current_parsed_root != NULL) 933 free_cvsroot_t (current_parsed_root); 934 if ((current_parsed_root = parse_cvsroot (current_root)) == NULL) 935 error (1, 0, "Bad CVSROOT: `%s'.", current_root); 936 937 if (trace) 938 fprintf (stderr, "%s-> main loop with CVSROOT=%s\n", 939 CLIENT_SERVER_STR, current_root); 940 941 /* 942 * Check to see if the repository exists. 943 */ 944#ifdef CLIENT_SUPPORT 945 if (!current_parsed_root->isremote) 946#endif /* CLIENT_SUPPORT */ 947 { 948 char *path; 949 int save_errno; 950 951 path = xmalloc (strlen (current_parsed_root->directory) 952 + sizeof (CVSROOTADM) 953 + 2); 954 (void) sprintf (path, "%s/%s", current_parsed_root->directory, CVSROOTADM); 955 if (!isaccessible (path, R_OK | X_OK)) 956 { 957 save_errno = errno; 958 /* If this is "cvs init", the root need not exist yet. */ 959 if (strcmp (command_name, "init") != 0) 960 { 961 error (1, save_errno, "%s", path); 962 } 963 } 964 free (path); 965 } 966 967#ifdef HAVE_PUTENV 968 /* Update the CVSROOT environment variable if necessary. */ 969 /* FIXME (njc): should we always set this with the CVSROOT from the command line? */ 970 if (cvs_update_env) 971 { 972 static char *prev; 973 char *env; 974 env = xmalloc (strlen (CVSROOT_ENV) + strlen (CVSroot) 975 + 1 + 1); 976 (void) sprintf (env, "%s=%s", CVSROOT_ENV, CVSroot); 977 (void) putenv (env); 978 /* do not free env yet, as putenv has control of it */ 979 /* but do free the previous value, if any */ 980 if (prev != NULL) 981 free (prev); 982 prev = env; 983 } 984#endif 985 } 986 987 /* Parse the CVSROOT/config file, but only for local. For the 988 server, we parse it after we know $CVSROOT. For the 989 client, it doesn't get parsed at all, obviously. The 990 presence of the parse_config call here is not mean to 991 predetermine whether CVSROOT/config overrides things from 992 read_cvsrc and other such places or vice versa. That sort 993 of thing probably needs more thought. */ 994 if (1 995#ifdef SERVER_SUPPORT 996 && !server_active 997#endif 998#ifdef CLIENT_SUPPORT 999 && !current_parsed_root->isremote 1000#endif 1001 ) 1002 { 1003 /* If there was an error parsing the config file, parse_config 1004 already printed an error. We keep going. Why? Because 1005 if we didn't, then there would be no way to check in a new 1006 CVSROOT/config file to fix the broken one! */ 1007 parse_config (current_parsed_root->directory); 1008 1009 /* Now is a convenient time to read CVSROOT/options */ 1010 parseopts(current_parsed_root->directory); 1011 } 1012 1013#ifdef CLIENT_SUPPORT 1014 /* Need to check for current_parsed_root != NULL here since 1015 * we could still be in server mode before the server function 1016 * gets called below and sets the root 1017 */ 1018 if (current_parsed_root != NULL && current_parsed_root->isremote) 1019 { 1020 /* Create a new list for directory names that we've 1021 sent to the server. */ 1022 if (dirs_sent_to_server != NULL) 1023 dellist (&dirs_sent_to_server); 1024 dirs_sent_to_server = getlist (); 1025 } 1026#endif 1027 1028 err = (*(cm->func)) (argc, argv); 1029 1030 /* Mark this root directory as done. When the server is 1031 active, current_root will be NULL -- don't try and 1032 remove it from the list. */ 1033 1034 if (current_root != NULL) 1035 { 1036 Node *n = findnode (root_directories, current_root); 1037 assert (n != NULL); 1038 n->data = (void *) 1; 1039 current_root = NULL; 1040 } 1041 1042#if 0 1043 /* This will not work yet, since it tries to free (void *) 1. */ 1044 dellist (&root_directories); 1045#endif 1046 1047#ifdef SERVER_SUPPORT 1048 if (server_active) 1049 { 1050 server_active = 0; 1051 break; 1052 } 1053#endif 1054 } /* end of loop for cvsroot values */ 1055 1056 } /* end of stuff that gets done if the user DOESN'T ask for help */ 1057 1058 Lock_Cleanup (); 1059 1060 free (program_path); 1061 if (CVSroot_cmdline != NULL) 1062 free (CVSroot_cmdline); 1063 if (free_CVSroot) 1064 free (CVSroot); 1065 if (free_Editor) 1066 free (Editor); 1067 if (free_Tmpdir) 1068 free (Tmpdir); 1069 root_allow_free (); 1070 1071#ifdef SYSTEM_CLEANUP 1072 /* Hook for OS-specific behavior, for example socket subsystems on 1073 NT and OS2 or dealing with windows and arguments on Mac. */ 1074 SYSTEM_CLEANUP (); 1075#endif 1076 1077 /* This is exit rather than return because apparently that keeps 1078 some tools which check for memory leaks happier. */ 1079 exit (err ? EXIT_FAILURE : 0); 1080 /* Keep picky/stupid compilers (e.g. Visual C++ 5.0) happy. */ 1081 return 0; 1082} 1083 1084char * 1085Make_Date (rawdate) 1086 char *rawdate; 1087{ 1088 time_t unixtime; 1089 1090 unixtime = get_date (rawdate, (struct timeb *) NULL); 1091 if (unixtime == (time_t) - 1) 1092 error (1, 0, "Can't parse date/time: %s", rawdate); 1093 return date_from_time_t (unixtime); 1094} 1095 1096/* Convert a time_t to an RCS format date. This is mainly for the 1097 use of "cvs history", because the CVSROOT/history file contains 1098 time_t format dates; most parts of CVS will want to avoid using 1099 time_t's directly, and instead use RCS_datecmp, Make_Date, &c. 1100 Assuming that the time_t is in GMT (as it generally should be), 1101 then the result will be in GMT too. 1102 1103 Returns a newly malloc'd string. */ 1104 1105char * 1106date_from_time_t (unixtime) 1107 time_t unixtime; 1108{ 1109 struct tm *ftm; 1110 char date[MAXDATELEN]; 1111 char *ret; 1112 1113 ftm = gmtime (&unixtime); 1114 if (ftm == NULL) 1115 /* This is a system, like VMS, where the system clock is in local 1116 time. Hopefully using localtime here matches the "zero timezone" 1117 hack I added to get_date (get_date of course being the relevant 1118 issue for Make_Date, and for history.c too I think). */ 1119 ftm = localtime (&unixtime); 1120 1121 (void) sprintf (date, DATEFORM, 1122 ftm->tm_year + (ftm->tm_year < 100 ? 0 : 1900), 1123 ftm->tm_mon + 1, ftm->tm_mday, ftm->tm_hour, 1124 ftm->tm_min, ftm->tm_sec); 1125 ret = xstrdup (date); 1126 return (ret); 1127} 1128 1129/* Convert a date to RFC822/1123 format. This is used in contexts like 1130 dates to send in the protocol; it should not vary based on locale or 1131 other such conventions for users. We should have another routine which 1132 does that kind of thing. 1133 1134 The SOURCE date is in our internal RCS format. DEST should point to 1135 storage managed by the caller, at least MAXDATELEN characters. */ 1136void 1137date_to_internet (dest, source) 1138 char *dest; 1139 const char *source; 1140{ 1141 struct tm date; 1142 1143 date_to_tm (&date, source); 1144 tm_to_internet (dest, &date); 1145} 1146 1147void 1148date_to_tm (dest, source) 1149 struct tm *dest; 1150 const char *source; 1151{ 1152 if (sscanf (source, SDATEFORM, 1153 &dest->tm_year, &dest->tm_mon, &dest->tm_mday, 1154 &dest->tm_hour, &dest->tm_min, &dest->tm_sec) 1155 != 6) 1156 /* Is there a better way to handle errors here? I made this 1157 non-fatal in case we are called from the code which can't 1158 deal with fatal errors. */ 1159 error (0, 0, "internal error: bad date %s", source); 1160 1161 if (dest->tm_year > 100) 1162 dest->tm_year -= 1900; 1163 1164 dest->tm_mon -= 1; 1165} 1166 1167/* Convert a date to RFC822/1123 format. This is used in contexts like 1168 dates to send in the protocol; it should not vary based on locale or 1169 other such conventions for users. We should have another routine which 1170 does that kind of thing. 1171 1172 The SOURCE date is a pointer to a struct tm. DEST should point to 1173 storage managed by the caller, at least MAXDATELEN characters. */ 1174void 1175tm_to_internet (dest, source) 1176 char *dest; 1177 const struct tm *source; 1178{ 1179 /* Just to reiterate, these strings are from RFC822 and do not vary 1180 according to locale. */ 1181 static const char *const month_names[] = 1182 {"Jan", "Feb", "Mar", "Apr", "May", "Jun", 1183 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; 1184 1185 sprintf (dest, "%d %s %d %02d:%02d:%02d -0000", source->tm_mday, 1186 source->tm_mon < 0 || source->tm_mon > 11 ? "???" : month_names[source->tm_mon], 1187 source->tm_year + 1900, source->tm_hour, source->tm_min, source->tm_sec); 1188} 1189 1190void 1191usage (cpp) 1192 register const char *const *cpp; 1193{ 1194 (void) fprintf (stderr, *cpp++, program_name, command_name); 1195 for (; *cpp; cpp++) 1196 (void) fprintf (stderr, *cpp); 1197 error_exit (); 1198} 1199 1200void 1201parseopts(root) 1202 const char *root; 1203{ 1204 char path[PATH_MAX]; 1205 int save_errno; 1206 char buf[1024]; 1207 const char *p; 1208 char *q; 1209 FILE *fp; 1210 1211 if (root == NULL) { 1212 printf("no CVSROOT in parseopts\n"); 1213 return; 1214 } 1215 p = strchr (root, ':'); 1216 if (p) 1217 p++; 1218 else 1219 p = root; 1220 if (p == NULL) { 1221 printf("mangled CVSROOT in parseopts\n"); 1222 return; 1223 } 1224 (void) sprintf (path, "%s/%s/%s", p, CVSROOTADM, CVSROOTADM_OPTIONS); 1225 if ((fp = fopen(path, "r")) != NULL) { 1226 while (fgets(buf, sizeof buf, fp) != NULL) { 1227 if (buf[0] == '#') 1228 continue; 1229 q = strrchr(buf, '\n'); 1230 if (q) 1231 *q = '\0'; 1232 1233 if (!strncmp(buf, "tag=", 4)) { 1234 char *what; 1235 char *rcs_localid; 1236 1237 rcs_localid = buf + 4; 1238 RCS_setlocalid(rcs_localid); 1239 } 1240 if (!strncmp(buf, "tagexpand=", 10)) { 1241 char *what; 1242 char *rcs_incexc; 1243 1244 rcs_incexc = buf + 10; 1245 RCS_setincexc(rcs_incexc); 1246 } 1247 /* 1248 * OpenBSD has a "umask=" and "dlimit=" command, we silently 1249 * ignore them here since they are not much use to us. cvsumask 1250 * defaults to 002 already, and the dlimit (data size limit) 1251 * should really be handled elsewhere (eg: login.conf). 1252 */ 1253 } 1254 fclose(fp); 1255 } 1256} 1257