source/utils/smbcontrol.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Send messages to other Samba daemons
   5
   6    Copyright (C) Tim Potter 2003
   7    Copyright (C) Andrew Tridgell 1994-1998
   8    Copyright (C) Martin Pool 2001-2002
   9    Copyright (C) Simo Sorce 2002
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 2 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software
  23    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24 */
  25
  26 #include "includes.h"
  27
  28 /* Default timeout value when waiting for replies (in seconds) */
  29
  30 #define DEFAULT_TIMEOUT 10
  31
  32 static int timeout = DEFAULT_TIMEOUT;
  33 static int num_replies;         /* Used by message callback fns */
  34
  35 /* Send a message to a destination pid.  Zero means broadcast smbd. */
  36
  37 static BOOL send_message(pid_t pid, int msg_type, const void *buf, int len,
  38                          BOOL duplicates)
  39 {
  40         TDB_CONTEXT *tdb;
  41         BOOL ret;
  42         int n_sent = 0;
  43
  44         if (!message_init())
  45                 return False;
  46
  47         if (pid != 0)
  48                 return message_send_pid(pid, msg_type, buf, len, duplicates);
  49
  50         tdb = tdb_open_log(lock_path("connections.tdb"), 0,
  51                            TDB_DEFAULT, O_RDWR, 0);
  52         if (!tdb) {
  53                 fprintf(stderr,"Failed to open connections database"
  54                         ": %s\n", strerror(errno));
  55                 return False;
  56         }
  57
  58         ret = message_send_all(tdb,msg_type, buf, len, duplicates,
  59                                &n_sent);
  60         DEBUG(10,("smbcontrol/send_message: broadcast message to "
  61                   "%d processes\n", n_sent));
  62
  63         tdb_close(tdb);
  64
  65         return ret;
  66 }
  67
  68 /* Wait for one or more reply messages */
  69
  70 static void wait_replies(BOOL multiple_replies)
  71 {
  72         time_t start_time = time(NULL);
  73
  74         /* Wait around a bit.  This is pretty disgusting - we have to
  75            busy-wait here as there is no nicer way to do it. */
  76
  77         do {
  78                 message_dispatch();
  79                 if (num_replies > 0 && !multiple_replies)
  80                         break;
  81                 sleep(1);
  82         } while (timeout - (time(NULL) - start_time) > 0);
  83 }
  84
  85 /* Message handler callback that displays a string on stdout */
  86
  87 static void print_string_cb(int msg_type, pid_t pid, void *buf, size_t len)
  88 {
  89         printf("%.*s", (int)len, (const char *)buf);
  90         num_replies++;
  91 }
  92
  93 /* Send no message.  Useful for testing. */
  94
  95 static BOOL do_noop(const pid_t pid, const int argc, const char **argv)
  96 {
  97         if (argc != 1) {
  98                 fprintf(stderr, "Usage: smbcontrol <dest> noop\n");
  99                 return False;
 100         }
 101
 102         /* Move along, nothing to see here */
 103
 104         return True;
 105 }
 106
 107 /* Send a debug string */
 108
 109 static BOOL do_debug(const pid_t pid, const int argc, const char **argv)
 110 {
 111         if (argc != 2) {
 112                 fprintf(stderr, "Usage: smbcontrol <dest> debug "
 113                         "<debug-string>\n");
 114                 return False;
 115         }
 116
 117         return send_message(
 118                 pid, MSG_DEBUG, argv[1], strlen(argv[1]) + 1, False);
 119 }
 120
 121 /* Force a browser election */
 122
 123 static BOOL do_election(const pid_t pid, const int argc, const char **argv)
 124 {
 125         if (argc != 1) {
 126                 fprintf(stderr, "Usage: smbcontrol <dest> force-election\n");
 127                 return False;
 128         }
 129
 130         return send_message(
 131                 pid, MSG_FORCE_ELECTION, NULL, 0, False);
 132 }
 133
 134 /* Ping a samba daemon process */
 135
 136 static void pong_cb(int msg_type, pid_t pid, void *buf, size_t len)
 137 {
 138         printf("PONG from pid %u\n", (unsigned int)pid);
 139         num_replies++;
 140 }
 141
 142 static BOOL do_ping(const pid_t pid, const int argc, const char **argv)
 143 {
 144         if (argc != 1) {
 145                 fprintf(stderr, "Usage: smbcontrol <dest> ping\n");
 146                 return False;
 147         }
 148
 149         /* Send a message and register our interest in a reply */
 150
 151         if (!send_message(pid, MSG_PING, NULL, 0, False))
 152                 return False;
 153
 154         message_register(MSG_PONG, pong_cb);
 155
 156         wait_replies(pid == 0);
 157
 158         /* No replies were received within the timeout period */
 159
 160         if (num_replies == 0)
 161                 printf("No replies received\n");
 162
 163         message_deregister(MSG_PONG);
 164
 165         return num_replies;
 166 }
 167
 168 /* Set profiling options */
 169
 170 static BOOL do_profile(const pid_t pid, const int argc, const char **argv)
 171 {
 172         int v;
 173
 174         if (argc != 2) {
 175                 fprintf(stderr, "Usage: smbcontrol <dest> profile "
 176                         "<off|count|on|flush>\n");
 177                 return False;
 178         }
 179
 180         if (strcmp(argv[1], "off") == 0) {
 181                 v = 0;
 182         } else if (strcmp(argv[1], "count") == 0) {
 183                 v = 1;
 184         } else if (strcmp(argv[1], "on") == 0) {
 185                 v = 2;
 186         } else if (strcmp(argv[1], "flush") == 0) {
 187                 v = 3;
 188         } else {
 189                 fprintf(stderr, "Unknown profile command '%s'\n", argv[1]);
 190                 return False;
 191         }
 192
 193         return send_message(pid, MSG_PROFILE, &v, sizeof(int), False);
 194 }
 195
 196 /* Return the profiling level */
 197
 198 static void profilelevel_cb(int msg_type, pid_t pid, void *buf, size_t len)
 199 {
 200         int level;
 201         const char *s;
 202
 203         num_replies++;
 204
 205         if (len != sizeof(int)) {
 206                 fprintf(stderr, "invalid message length %d returned\n", len);
 207                 return;
 208         }
 209
 210         memcpy(&level, buf, sizeof(int));
 211
 212         switch (level) {
 213         case 0:
 214                 s = "not enabled";
 215                 break;
 216         case 1:
 217                 s = "off";
 218                 break;
 219         case 3:
 220                 s = "count only";
 221                 break;
 222         case 7:
 223                 s = "count and time";
 224                 break;
 225         default:
 226                 s = "BOGUS";
 227                 break;
 228         }
 229
 230         printf("Profiling %s on pid %u\n",s,(unsigned int)pid);
 231 }
 232
 233 static void profilelevel_rqst(int msg_type, pid_t pid, void *buf, size_t len)
 234 {
 235         int v = 0;
 236
 237         /* Send back a dummy reply */
 238
 239         send_message(pid, MSG_PROFILELEVEL, &v, sizeof(int), False);
 240 }
 241
 242 static BOOL do_profilelevel(const pid_t pid, const int argc, const char **argv)
 243 {
 244         if (argc != 1) {
 245                 fprintf(stderr, "Usage: smbcontrol <dest> profilelevel\n");
 246                 return False;
 247         }
 248
 249         /* Send a message and register our interest in a reply */
 250
 251         if (!send_message(pid, MSG_REQ_PROFILELEVEL, NULL, 0, False))
 252                 return False;
 253
 254         message_register(MSG_PROFILELEVEL, profilelevel_cb);
 255         message_register(MSG_REQ_PROFILELEVEL, profilelevel_rqst);
 256
 257         wait_replies(pid == 0);
 258
 259         /* No replies were received within the timeout period */
 260
 261         if (num_replies == 0)
 262                 printf("No replies received\n");
 263
 264         message_deregister(MSG_PROFILE);
 265
 266         return num_replies;
 267 }
 268
 269 /* Display debug level settings */
 270
 271 static BOOL do_debuglevel(const pid_t pid, const int argc, const char **argv)
 272 {
 273         if (argc != 1) {
 274                 fprintf(stderr, "Usage: smbcontrol <dest> debuglevel\n");
 275                 return False;
 276         }
 277
 278         /* Send a message and register our interest in a reply */
 279
 280         if (!send_message(pid, MSG_REQ_DEBUGLEVEL, NULL, 0, False))
 281                 return False;
 282
 283         message_register(MSG_DEBUGLEVEL, print_string_cb);
 284
 285         wait_replies(pid == 0);
 286
 287         /* No replies were received within the timeout period */
 288
 289         if (num_replies == 0)
 290                 printf("No replies received\n");
 291
 292         message_deregister(MSG_DEBUGLEVEL);
 293
 294         return num_replies;
 295 }
 296
 297 /* Send a print notify message */
 298
 299 static BOOL do_printnotify(const pid_t pid, const int argc, const char **argv)
 300 {
 301         const char *cmd;
 302
 303         /* Check for subcommand */
 304
 305         if (argc == 1) {
 306                 fprintf(stderr, "Must specify subcommand:\n");
 307                 fprintf(stderr, "\tqueuepause <printername>\n");
 308                 fprintf(stderr, "\tqueueresume <printername>\n");
 309                 fprintf(stderr, "\tjobpause <printername> <unix jobid>\n");
 310                 fprintf(stderr, "\tjobresume <printername> <unix jobid>\n");
 311                 fprintf(stderr, "\tjobdelete <printername> <unix jobid>\n");
 312                 fprintf(stderr, "\tprinter <printername> <comment|port|"
 313                         "driver> <value>\n");
 314
 315                 return False;
 316         }
 317
 318         cmd = argv[1];
 319
 320         if (strcmp(cmd, "queuepause") == 0) {
 321
 322                 if (argc != 3) {
 323                         fprintf(stderr, "Usage: smbcontrol <dest> printnotify"
 324                                 " queuepause <printername>\n");
 325                         return False;
 326                 }
 327
 328                 notify_printer_status_byname(argv[2], PRINTER_STATUS_PAUSED);
 329
 330                 goto send;
 331
 332         } else if (strcmp(cmd, "queueresume") == 0) {
 333
 334                 if (argc != 3) {
 335                         fprintf(stderr, "Usage: smbcontrol <dest> printnotify"
 336                                 " queuereume <printername>\n");
 337                         return False;
 338                 }
 339
 340                 notify_printer_status_byname(argv[2], PRINTER_STATUS_OK);
 341
 342                 goto send;
 343
 344         } else if (strcmp(cmd, "jobpause") == 0) {
 345                 int jobid;
 346
 347                 if (argc != 4) {
 348                         fprintf(stderr, "Usage: smbcontrol <dest> printnotify"
 349                                 " jobpause <printername> <unix-jobid>\n");
 350                         return False;
 351                 }
 352
 353                 jobid = atoi(argv[3]);
 354
 355                 notify_job_status_byname(
 356                         argv[2], jobid, JOB_STATUS_PAUSED,
 357                         SPOOLSS_NOTIFY_MSG_UNIX_JOBID);
 358
 359                 goto send;
 360
 361         } else if (strcmp(cmd, "jobresume") == 0) {
 362                 int jobid;
 363
 364                 if (argc != 4) {
 365                         fprintf(stderr, "Usage: smbcontrol <dest> printnotify"
 366                                 " jobpause <printername> <unix-jobid>\n");
 367                         return False;
 368                 }
 369
 370                 jobid = atoi(argv[3]);
 371
 372                 notify_job_status_byname(
 373                         argv[2], jobid, JOB_STATUS_QUEUED,
 374                         SPOOLSS_NOTIFY_MSG_UNIX_JOBID);
 375
 376                 goto send;
 377
 378         } else if (strcmp(cmd, "jobdelete") == 0) {
 379                 int jobid;
 380
 381                 if (argc != 4) {
 382                         fprintf(stderr, "Usage: smbcontrol <dest> printnotify"
 383                                 " jobpause <printername> <unix-jobid>\n");
 384                         return False;
 385                 }
 386
 387                 jobid = atoi(argv[3]);
 388
 389                 notify_job_status_byname(
 390                         argv[2], jobid, JOB_STATUS_DELETING,
 391                         SPOOLSS_NOTIFY_MSG_UNIX_JOBID);
 392
 393                 notify_job_status_byname(
 394                         argv[2], jobid, JOB_STATUS_DELETING|
 395                         JOB_STATUS_DELETED,
 396                         SPOOLSS_NOTIFY_MSG_UNIX_JOBID);
 397
 398                 goto send;
 399
 400         } else if (strcmp(cmd, "printer") == 0) {
 401                 uint32 attribute;
 402
 403                 if (argc != 5) {
 404                         fprintf(stderr, "Usage: smbcontrol <dest> printnotify "
 405                                 "printer <printername> <comment|port|driver> "
 406                                 "<value>\n");
 407                         return False;
 408                 }
 409
 410                 if (strcmp(argv[3], "comment") == 0) {
 411                         attribute = PRINTER_NOTIFY_COMMENT;
 412                 } else if (strcmp(argv[3], "port") == 0) {
 413                         attribute = PRINTER_NOTIFY_PORT_NAME;
 414                 } else if (strcmp(argv[3], "driver") == 0) {
 415                         attribute = PRINTER_NOTIFY_DRIVER_NAME;
 416                 } else {
 417                         fprintf(stderr, "Invalid printer command '%s'\n",
 418                                 argv[3]);
 419                         return False;
 420                 }
 421
 422                 notify_printer_byname(argv[2], attribute, argv[4]);
 423
 424                 goto send;
 425         }
 426
 427         fprintf(stderr, "Invalid subcommand '%s'\n", cmd);
 428         return False;
 429
 430 send:
 431         print_notify_send_messages(0);
 432         return True;
 433 }
 434
 435 /* Close a share */
 436
 437 static BOOL do_closeshare(const pid_t pid, const int argc, const char **argv)
 438 {
 439         if (argc != 2) {
 440                 fprintf(stderr, "Usage: smbcontrol <dest> close-share "
 441                         "<sharename>\n");
 442                 return False;
 443         }
 444
 445         return send_message(
 446                 pid, MSG_SMB_FORCE_TDIS, argv[1], strlen(argv[1]) + 1, False);
 447 }
 448
 449 /* Force a SAM synchronisation */
 450
 451 static BOOL do_samsync(const pid_t pid, const int argc, const char **argv)
 452 {
 453         if (argc != 1) {
 454                 fprintf(stderr, "Usage: smbcontrol <dest> samsync\n");
 455                 return False;
 456         }
 457
 458         return send_message(
 459                 pid, MSG_SMB_SAM_SYNC, NULL, 0, False);
 460 }
 461
 462 /* Force a SAM replication */
 463
 464 static BOOL do_samrepl(const pid_t pid, const int argc, const char **argv)
 465 {
 466         if (argc != 1) {
 467                 fprintf(stderr, "Usage: smbcontrol <dest> samrepl\n");
 468                 return False;
 469         }
 470
 471         return send_message(
 472                 pid, MSG_SMB_SAM_REPL, NULL, 0, False);
 473 }
 474
 475 /* Display talloc pool usage */
 476
 477 static BOOL do_poolusage(const pid_t pid, const int argc, const char **argv)
 478 {
 479         if (argc != 1) {
 480                 fprintf(stderr, "Usage: smbcontrol <dest> pool-usage\n");
 481                 return False;
 482         }
 483
 484         /* Send a message and register our interest in a reply */
 485
 486         if (!send_message(pid, MSG_REQ_POOL_USAGE, NULL, 0, False))
 487                 return False;
 488
 489         message_register(MSG_POOL_USAGE, print_string_cb);
 490
 491         wait_replies(pid == 0);
 492
 493         /* No replies were received within the timeout period */
 494
 495         if (num_replies == 0)
 496                 printf("No replies received\n");
 497
 498         message_deregister(MSG_POOL_USAGE);
 499
 500         return num_replies;
 501 }
 502
 503 /* Perform a dmalloc mark */
 504
 505 static BOOL do_dmalloc_mark(const pid_t pid, const int argc, const char **argv)
 506 {
 507         if (argc != 1) {
 508                 fprintf(stderr, "Usage: smbcontrol <dest> dmalloc-mark\n");
 509                 return False;
 510         }
 511
 512         return send_message(
 513                 pid, MSG_REQ_DMALLOC_MARK, NULL, 0, False);
 514 }
 515
 516 /* Perform a dmalloc changed */
 517
 518 static BOOL do_dmalloc_changed(const pid_t pid, const int argc, const char **argv)
 519 {
 520         if (argc != 1) {
 521                 fprintf(stderr, "Usage: smbcontrol <dest> "
 522                         "dmalloc-log-changed\n");
 523                 return False;
 524         }
 525
 526         return send_message(
 527                 pid, MSG_REQ_DMALLOC_LOG_CHANGED, NULL, 0, False);
 528 }
 529
 530 /* Shutdown a server process */
 531
 532 static BOOL do_shutdown(const pid_t pid, const int argc, const char **argv)
 533 {
 534         if (argc != 1) {
 535                 fprintf(stderr, "Usage: smbcontrol <dest> shutdown\n");
 536                 return False;
 537         }
 538
 539         return send_message(pid, MSG_SHUTDOWN, NULL, 0, False);
 540 }
 541
 542 /* Notify a driver upgrade */
 543
 544 static BOOL do_drvupgrade(const pid_t pid, const int argc, const char **argv)
 545 {
 546         if (argc != 2) {
 547                 fprintf(stderr, "Usage: smbcontrol <dest> drvupgrade "
 548                         "<driver-name>\n");
 549                 return False;
 550         }
 551
 552         return send_message(
 553                 pid, MSG_DEBUG, argv[1], strlen(argv[1]) + 1, False);
 554 }
 555
 556 static BOOL do_reload_config(const pid_t pid, const int argc, const char **argv)
 557 {
 558         if (argc != 1) {
 559                 fprintf(stderr, "Usage: smbcontrol <dest> reload-config\n");
 560                 return False;
 561         }
 562
 563         return send_message(pid, MSG_SMB_CONF_UPDATED, NULL, 0, False);
 564 }
 565
 566 /* A list of message type supported */
 567
 568 static const struct {
 569         const char *name;       /* Option name */
 570         BOOL (*fn)(const pid_t pid, const int argc, const char **argv);
 571         const char *help;       /* Short help text */
 572 } msg_types[] = {
 573         { "debug", do_debug, "Set debuglevel"  },
 574         { "force-election", do_election,
 575           "Force a browse election" },
 576         { "ping", do_ping, "Elicit a response" },
 577         { "profile", do_profile, "" },
 578         { "profilelevel", do_profilelevel, "" },
 579         { "debuglevel", do_debuglevel, "Display current debuglevels" },
 580         { "printnotify", do_printnotify, "Send a print notify message" },
 581         { "close-share", do_closeshare, "Forcibly disconnect a share" },
 582         { "samsync", do_samsync, "Initiate SAM synchronisation" },
 583         { "samrepl", do_samrepl, "Initiate SAM replication" },
 584         { "pool-usage", do_poolusage, "Display talloc memory usage" },
 585         { "dmalloc-mark", do_dmalloc_mark, "" },
 586         { "dmalloc-log-changed", do_dmalloc_changed, "" },
 587         { "shutdown", do_shutdown, "Shut down daemon" },
 588         { "drvupgrade", do_drvupgrade, "Notify a printer driver has changed" },
 589         { "reload-config", do_reload_config, "Force smbd or winbindd to reload config file"},
 590         { "noop", do_noop, "Do nothing" },
 591         { NULL }
 592 };
 593
 594 /* Display usage information */
 595
 596 static void usage(poptContext *pc)
 597 {
 598         int i;
 599
 600         poptPrintHelp(*pc, stderr, 0);
 601
 602         fprintf(stderr, "\n");
 603         fprintf(stderr, "<destination> is one of \"nmbd\", \"smbd\" or a "
 604                 "process ID\n");
 605
 606         fprintf(stderr, "\n");
 607         fprintf(stderr, "<message-type> is one of:\n");
 608
 609         for (i = 0; msg_types[i].name; i++)
 610             fprintf(stderr, "\t%-30s%s\n", msg_types[i].name,
 611                     msg_types[i].help);
 612
 613         fprintf(stderr, "\n");
 614
 615         exit(1);
 616 }
 617
 618 /* Return the pid number for a string destination */
 619
 620 static pid_t parse_dest(const char *dest)
 621 {
 622         pid_t pid;
 623
 624         /* Zero is a special return value for broadcast smbd */
 625
 626         if (strequal(dest, "smbd"))
 627                 return 0;
 628
 629         /* Try self - useful for testing */
 630
 631         if (strequal(dest, "self"))
 632                 return sys_getpid();
 633
 634         /* Check for numeric pid number */
 635
 636         if ((pid = atoi(dest)) != 0)
 637                 return pid;
 638
 639         /* Look up other destinations in pidfile directory */
 640
 641         if ((pid = pidfile_pid(dest)) != 0)
 642                 return pid;
 643
 644         fprintf(stderr,"Can't find pid for destination '%s'\n", dest);
 645
 646         return -1;
 647 }
 648
 649 /* Execute smbcontrol command */
 650
 651 static BOOL do_command(int argc, const char **argv)
 652 {
 653         const char *dest = argv[0], *command = argv[1];
 654         pid_t pid;
 655         int i;
 656
 657         /* Check destination */
 658
 659         if ((pid = parse_dest(dest)) == -1)
 660                 return False;
 661
 662         /* Check command */
 663
 664         for (i = 0; msg_types[i].name; i++) {
 665                 if (strequal(command, msg_types[i].name))
 666                         return msg_types[i].fn(pid, argc - 1, argv + 1);
 667         }
 668
 669         fprintf(stderr, "smbcontrol: unknown command '%s'\n", command);
 670
 671         return False;
 672 }
 673
 674 /* Main program */
 675
 676 int main(int argc, const char **argv)
 677 {
 678         poptContext pc;
 679         int opt;
 680
 681         static struct poptOption wbinfo_options[] = {
 682                 { "timeout", 't', POPT_ARG_INT, &timeout, 't',
 683                   "Set timeout value in seconds", "TIMEOUT" },
 684
 685                 { "configfile", 's', POPT_ARG_STRING, NULL, 's',
 686                   "Use alternative configuration file", "CONFIGFILE" },
 687
 688                 POPT_TABLEEND
 689         };
 690
 691         struct poptOption options[] = {
 692                 { NULL, 0, POPT_ARG_INCLUDE_TABLE, wbinfo_options, 0,
 693                   "Options" },
 694
 695                 POPT_AUTOHELP
 696                 POPT_COMMON_VERSION
 697                 POPT_TABLEEND
 698         };
 699
 700         setup_logging(argv[0],True);
 701
 702         /* Parse command line arguments using popt */
 703
 704         pc = poptGetContext(
 705                 "smbcontrol", argc, (const char **)argv, options, 0);
 706
 707         poptSetOtherOptionHelp(pc, "[OPTION...] <destination> <message-type> "
 708                                "<parameters>");
 709
 710         if (argc == 1)
 711                 usage(&pc);
 712
 713         while ((opt = poptGetNextOpt(pc)) != -1) {
 714                 switch(opt) {
 715                 case 't':       /* --timeout */
 716                         argc -= 2;
 717                         break;
 718                 case 's':       /* --configfile */
 719                         pstrcpy(dyn_CONFIGFILE, optarg);
 720                         argc -= 2;
 721                         break;
 722                 default:
 723                         fprintf(stderr, "Invalid option\n");
 724                         poptPrintHelp(pc, stderr, 0);
 725                         break;
 726                 }
 727         }
 728
 729         /* We should now have the remaining command line arguments in
 730            argv.  The argc parameter should have been decremented to the
 731            correct value in the above switch statement. */
 732
 733         argv = (const char **)poptGetArgs(pc);
 734         argc--;                 /* Don't forget about argv[0] */
 735
 736         if (argc == 1)
 737                 usage(&pc);
 738
 739         lp_load(dyn_CONFIGFILE,False,False,False);
 740
 741         /* Need to invert sense of return code -- samba
 742          * routines mostly return True==1 for success, but
 743          * shell needs 0. */
 744
 745         return !do_command(argc, argv);
 746 }