source3/utils/status.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    status reporting
   4    Copyright (C) Andrew Tridgell 1994-1998
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19    Revision History:
  20
  21    12 aug 96: Erik.Devriendt@te6.siemens.be
  22    added support for shared memory implementation of share mode locking
  23
  24    21-Jul-1998: rsharpe@ns.aus.com (Richard Sharpe)
  25    Added -L (locks only) -S (shares only) flags and code
  26
  27 */
  28
  29 /*
  30  * This program reports current SMB connections
  31  */
  32
  33 #include "includes.h"
  34 #include "system/filesys.h"
  35 #include "popt_common.h"
  36 #include "dbwrap/dbwrap.h"
  37 #include "dbwrap/dbwrap_open.h"
  38 #include "../libcli/security/security.h"
  39 #include "session.h"
  40 #include "locking/proto.h"
  41 #include "messages.h"
  42 #include "librpc/gen_ndr/open_files.h"
  43 #include "smbd/smbd.h"
  44 #include "librpc/gen_ndr/notify.h"
  45 #include "lib/conn_tdb.h"
  46 #include "serverid.h"
  47 #include "status_profile.h"
  48 #include "smbd/notifyd/notifyd.h"
  49
  50 #define SMB_MAXPIDS             2048
  51 static uid_t            Ucrit_uid = 0;               /* added by OH */
  52 static struct server_id Ucrit_pid[SMB_MAXPIDS];  /* Ugly !!! */   /* added by OH */
  53 static int              Ucrit_MaxPid=0;                    /* added by OH */
  54 static unsigned int     Ucrit_IsActive = 0;                /* added by OH */
  55
  56 static bool verbose, brief;
  57 static bool shares_only;            /* Added by RJS */
  58 static bool locks_only;            /* Added by RJS */
  59 static bool processes_only;
  60 static bool show_brl;
  61 static bool numeric_only;
  62 static bool do_checks = true;
  63
  64 const char *username = NULL;
  65
  66 /* added by OH */
  67 static void Ucrit_addUid(uid_t uid)
  68 {
  69         Ucrit_uid = uid;
  70         Ucrit_IsActive = 1;
  71 }
  72
  73 static unsigned int Ucrit_checkUid(uid_t uid)
  74 {
  75         if ( !Ucrit_IsActive )
  76                 return 1;
  77
  78         if ( uid == Ucrit_uid )
  79                 return 1;
  80
  81         return 0;
  82 }
  83
  84 static unsigned int Ucrit_checkPid(struct server_id pid)
  85 {
  86         int i;
  87
  88         if ( !Ucrit_IsActive )
  89                 return 1;
  90
  91         for (i=0;i<Ucrit_MaxPid;i++) {
  92                 if (serverid_equal(&pid, &Ucrit_pid[i])) {
  93                         return 1;
  94                 }
  95         }
  96
  97         return 0;
  98 }
  99
 100 static bool Ucrit_addPid( struct server_id pid )
 101 {
 102         if ( !Ucrit_IsActive )
 103                 return True;
 104
 105         if ( Ucrit_MaxPid >= SMB_MAXPIDS ) {
 106                 d_printf("ERROR: More than %d pids for user %s!\n",
 107                          SMB_MAXPIDS, uidtoname(Ucrit_uid));
 108
 109                 return False;
 110         }
 111
 112         Ucrit_pid[Ucrit_MaxPid++] = pid;
 113
 114         return True;
 115 }
 116
 117 static int print_share_mode(const struct share_mode_entry *e,
 118                             const char *sharepath,
 119                             const char *fname,
 120                             const char *sname,
 121                             void *dummy)
 122 {
 123         static int count;
 124
 125         if (do_checks && !is_valid_share_mode_entry(e)) {
 126                 return 0;
 127         }
 128
 129         if (count==0) {
 130                 d_printf("Locked files:\n");
 131                 d_printf("Pid          Uid        DenyMode   Access      R/W        Oplock           SharePath   Name   Time\n");
 132                 d_printf("--------------------------------------------------------------------------------------------------\n");
 133         }
 134         count++;
 135
 136         if (do_checks && !serverid_exists(&e->pid)) {
 137                 /* the process for this entry does not exist any more */
 138                 return 0;
 139         }
 140
 141         if (Ucrit_checkPid(e->pid)) {
 142                 struct server_id_buf tmp;
 143                 d_printf("%-11s  ", server_id_str_buf(e->pid, &tmp));
 144                 d_printf("%-9u  ", (unsigned int)e->uid);
 145                 switch (map_share_mode_to_deny_mode(e->share_access,
 146                                                     e->private_options)) {
 147                         case DENY_NONE: d_printf("DENY_NONE  "); break;
 148                         case DENY_ALL:  d_printf("DENY_ALL   "); break;
 149                         case DENY_DOS:  d_printf("DENY_DOS   "); break;
 150                         case DENY_READ: d_printf("DENY_READ  "); break;
 151                         case DENY_WRITE:printf("DENY_WRITE "); break;
 152                         case DENY_FCB:  d_printf("DENY_FCB "); break;
 153                         default: {
 154                                 d_printf("unknown-please report ! "
 155                                          "e->share_access = 0x%x, "
 156                                          "e->private_options = 0x%x\n",
 157                                          (unsigned int)e->share_access,
 158                                          (unsigned int)e->private_options );
 159                                 break;
 160                         }
 161                 }
 162                 d_printf("0x%-8x  ",(unsigned int)e->access_mask);
 163                 if ((e->access_mask & (FILE_READ_DATA|FILE_WRITE_DATA))==
 164                                 (FILE_READ_DATA|FILE_WRITE_DATA)) {
 165                         d_printf("RDWR       ");
 166                 } else if (e->access_mask & FILE_WRITE_DATA) {
 167                         d_printf("WRONLY     ");
 168                 } else {
 169                         d_printf("RDONLY     ");
 170                 }
 171
 172                 if((e->op_type & (EXCLUSIVE_OPLOCK|BATCH_OPLOCK)) ==
 173                                         (EXCLUSIVE_OPLOCK|BATCH_OPLOCK)) {
 174                         d_printf("EXCLUSIVE+BATCH ");
 175                 } else if (e->op_type & EXCLUSIVE_OPLOCK) {
 176                         d_printf("EXCLUSIVE       ");
 177                 } else if (e->op_type & BATCH_OPLOCK) {
 178                         d_printf("BATCH           ");
 179                 } else if (e->op_type & LEVEL_II_OPLOCK) {
 180                         d_printf("LEVEL_II        ");
 181                 } else if (e->op_type == LEASE_OPLOCK) {
 182                         uint32_t lstate = e->lease->current_state;
 183                         d_printf("LEASE(%s%s%s)%s%s%s      ",
 184                                  (lstate & SMB2_LEASE_READ)?"R":"",
 185                                  (lstate & SMB2_LEASE_WRITE)?"W":"",
 186                                  (lstate & SMB2_LEASE_HANDLE)?"H":"",
 187                                  (lstate & SMB2_LEASE_READ)?"":" ",
 188                                  (lstate & SMB2_LEASE_WRITE)?"":" ",
 189                                  (lstate & SMB2_LEASE_HANDLE)?"":" ");
 190                 } else {
 191                         d_printf("NONE            ");
 192                 }
 193
 194                 d_printf(" %s   %s%s   %s",
 195                          sharepath, fname,
 196                          sname ? sname : "",
 197                          time_to_asc((time_t)e->time.tv_sec));
 198         }
 199
 200         return 0;
 201 }
 202
 203 static void print_brl(struct file_id id,
 204                         struct server_id pid,
 205                         enum brl_type lock_type,
 206                         enum brl_flavour lock_flav,
 207                         br_off start,
 208                         br_off size,
 209                         void *private_data)
 210 {
 211         static int count;
 212         unsigned int i;
 213         static const struct {
 214                 enum brl_type lock_type;
 215                 const char *desc;
 216         } lock_types[] = {
 217                 { READ_LOCK, "R" },
 218                 { WRITE_LOCK, "W" },
 219                 { PENDING_READ_LOCK, "PR" },
 220                 { PENDING_WRITE_LOCK, "PW" },
 221                 { UNLOCK_LOCK, "U" }
 222         };
 223         const char *desc="X";
 224         const char *sharepath = "";
 225         char *fname = NULL;
 226         struct share_mode_lock *share_mode;
 227         struct server_id_buf tmp;
 228
 229         if (count==0) {
 230                 d_printf("Byte range locks:\n");
 231                 d_printf("Pid        dev:inode       R/W  start     size      SharePath               Name\n");
 232                 d_printf("--------------------------------------------------------------------------------\n");
 233         }
 234         count++;
 235
 236         share_mode = fetch_share_mode_unlocked(NULL, id);
 237         if (share_mode) {
 238                 bool has_stream = share_mode->data->stream_name != NULL;
 239
 240                 fname = talloc_asprintf(NULL, "%s%s%s",
 241                                         share_mode->data->base_name,
 242                                         has_stream ? ":" : "",
 243                                         has_stream ?
 244                                         share_mode->data->stream_name :
 245                                         "");
 246         } else {
 247                 fname = talloc_strdup(NULL, "");
 248                 if (fname == NULL) {
 249                         return;
 250                 }
 251         }
 252
 253         for (i=0;i<ARRAY_SIZE(lock_types);i++) {
 254                 if (lock_type == lock_types[i].lock_type) {
 255                         desc = lock_types[i].desc;
 256                 }
 257         }
 258
 259         d_printf("%-10s %-15s %-4s %-9jd %-9jd %-24s %-24s\n",
 260                  server_id_str_buf(pid, &tmp), file_id_string_tos(&id),
 261                  desc,
 262                  (intmax_t)start, (intmax_t)size,
 263                  sharepath, fname);
 264
 265         TALLOC_FREE(fname);
 266         TALLOC_FREE(share_mode);
 267 }
 268
 269 static int traverse_connections(const struct connections_key *key,
 270                                 const struct connections_data *crec,
 271                                 void *state)
 272 {
 273         struct server_id_buf tmp;
 274
 275         if (crec->cnum == TID_FIELD_INVALID)
 276                 return 0;
 277
 278         if (do_checks &&
 279             (!process_exists(crec->pid) || !Ucrit_checkUid(crec->uid))) {
 280                 return 0;
 281         }
 282
 283         d_printf("%-10s   %s   %-12s  %s",
 284                  crec->servicename, server_id_str_buf(crec->pid, &tmp),
 285                  crec->machine,
 286                  time_to_asc(crec->start));
 287
 288         return 0;
 289 }
 290
 291 static int traverse_sessionid(const char *key, struct sessionid *session,
 292                               void *private_data)
 293 {
 294         fstring uid_str, gid_str;
 295         struct server_id_buf tmp;
 296
 297         if (do_checks &&
 298             (!process_exists(session->pid) ||
 299              !Ucrit_checkUid(session->uid))) {
 300                 return 0;
 301         }
 302
 303         Ucrit_addPid(session->pid);
 304
 305         fstrcpy(uid_str, "-1");
 306
 307         if (session->uid != -1) {
 308                 if (numeric_only) {
 309                         fstr_sprintf(uid_str, "%u", (unsigned int)session->uid);
 310                 } else {
 311                         fstrcpy(uid_str, uidtoname(session->uid));
 312                 }
 313         }
 314
 315         fstrcpy(gid_str, "-1");
 316
 317         if (session->gid != -1) {
 318                 if (numeric_only) {
 319                         fstr_sprintf(gid_str, "%u", (unsigned int)session->gid);
 320                 } else {
 321                         fstrcpy(gid_str, gidtoname(session->gid));
 322                 }
 323         }
 324
 325         d_printf("%-7s   %-12s  %-12s  %-12s (%s) %-12s\n",
 326                  server_id_str_buf(session->pid, &tmp),
 327                  uid_str, gid_str,
 328                  session->remote_machine, session->hostname, session->protocol_ver);
 329
 330         return 0;
 331 }
 332
 333
 334 static bool print_notify_rec(const char *path, struct server_id server,
 335                              const struct notify_instance *instance,
 336                              void *private_data)
 337 {
 338         struct server_id_buf idbuf;
 339
 340         d_printf("%s\\%s\\%x\\%x\n", path, server_id_str_buf(server, &idbuf),
 341                  (unsigned)instance->filter,
 342                  (unsigned)instance->subdir_filter);
 343
 344         return true;
 345 }
 346
 347 int main(int argc, const char *argv[])
 348 {
 349         int c;
 350         int profile_only = 0;
 351         bool show_processes, show_locks, show_shares;
 352         bool show_notify = false;
 353         poptContext pc;
 354         struct poptOption long_options[] = {
 355                 POPT_AUTOHELP
 356                 {"processes",   'p', POPT_ARG_NONE,     NULL, 'p', "Show processes only" },
 357                 {"verbose",     'v', POPT_ARG_NONE,     NULL, 'v', "Be verbose" },
 358                 {"locks",       'L', POPT_ARG_NONE,     NULL, 'L', "Show locks only" },
 359                 {"shares",      'S', POPT_ARG_NONE,     NULL, 'S', "Show shares only" },
 360                 {"notify",      'N', POPT_ARG_NONE,     NULL, 'N', "Show notifies" },
 361                 {"user",        'u', POPT_ARG_STRING,   &username, 'u', "Switch to user" },
 362                 {"brief",       'b', POPT_ARG_NONE,     NULL, 'b', "Be brief" },
 363                 {"profile",     'P', POPT_ARG_NONE, NULL, 'P', "Do profiling" },
 364                 {"profile-rates", 'R', POPT_ARG_NONE, NULL, 'R', "Show call rates" },
 365                 {"byterange",   'B', POPT_ARG_NONE,     NULL, 'B', "Include byte range locks"},
 366                 {"numeric",     'n', POPT_ARG_NONE,     NULL, 'n', "Numeric uid/gid"},
 367                 {"fast",        'f', POPT_ARG_NONE,     NULL, 'f', "Skip checks if processes still exist"},
 368                 POPT_COMMON_SAMBA
 369                 POPT_TABLEEND
 370         };
 371         TALLOC_CTX *frame = talloc_stackframe();
 372         int ret = 0;
 373         struct messaging_context *msg_ctx = NULL;
 374         char *db_path;
 375         bool ok;
 376
 377         sec_init();
 378         smb_init_locale();
 379
 380         setup_logging(argv[0], DEBUG_STDERR);
 381         lp_set_cmdline("log level", "0");
 382
 383         if (getuid() != geteuid()) {
 384                 d_printf("smbstatus should not be run setuid\n");
 385                 ret = 1;
 386                 goto done;
 387         }
 388
 389         if (getuid() != 0) {
 390                 d_printf("smbstatus only works as root!\n");
 391                 ret = 1;
 392                 goto done;
 393         }
 394
 395
 396         pc = poptGetContext(NULL, argc, argv, long_options,
 397                             POPT_CONTEXT_KEEP_FIRST);
 398
 399         while ((c = poptGetNextOpt(pc)) != -1) {
 400                 switch (c) {
 401                 case 'p':
 402                         processes_only = true;
 403                         break;
 404                 case 'v':
 405                         verbose = true;
 406                         break;
 407                 case 'L':
 408                         locks_only = true;
 409                         break;
 410                 case 'S':
 411                         shares_only = true;
 412                         break;
 413                 case 'N':
 414                         show_notify = true;
 415                         break;
 416                 case 'b':
 417                         brief = true;
 418                         break;
 419                 case 'u':
 420                         Ucrit_addUid(nametouid(poptGetOptArg(pc)));
 421                         break;
 422                 case 'P':
 423                 case 'R':
 424                         profile_only = c;
 425                         break;
 426                 case 'B':
 427                         show_brl = true;
 428                         break;
 429                 case 'n':
 430                         numeric_only = true;
 431                         break;
 432                 case 'f':
 433                         do_checks = false;
 434                         break;
 435                 }
 436         }
 437
 438         /* setup the flags based on the possible combincations */
 439
 440         show_processes = !(shares_only || locks_only || profile_only) || processes_only;
 441         show_locks     = !(shares_only || processes_only || profile_only) || locks_only;
 442         show_shares    = !(processes_only || locks_only || profile_only) || shares_only;
 443
 444         if ( username )
 445                 Ucrit_addUid( nametouid(username) );
 446
 447         if (verbose) {
 448                 d_printf("using configfile = %s\n", get_dyn_CONFIGFILE());
 449         }
 450
 451         if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
 452                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 453                         get_dyn_CONFIGFILE());
 454                 ret = -1;
 455                 goto done;
 456         }
 457
 458
 459         /*
 460          * This implicitly initializes the global ctdbd connection,
 461          * usable by the db_open() calls further down.
 462          */
 463         msg_ctx = messaging_init(NULL, samba_tevent_context_init(NULL));
 464         if (msg_ctx == NULL) {
 465                 fprintf(stderr, "messaging_init failed\n");
 466                 ret = -1;
 467                 goto done;
 468         }
 469
 470         if (!lp_load_global(get_dyn_CONFIGFILE())) {
 471                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 472                         get_dyn_CONFIGFILE());
 473                 ret = -1;
 474                 goto done;
 475         }
 476
 477         switch (profile_only) {
 478                 case 'P':
 479                         /* Dump profile data */
 480                         ok = status_profile_dump(verbose);
 481                         return ok ? 0 : 1;
 482                 case 'R':
 483                         /* Continuously display rate-converted data */
 484                         ok = status_profile_rates(verbose);
 485                         return ok ? 0 : 1;
 486                 default:
 487                         break;
 488         }
 489
 490         if ( show_processes ) {
 491                 d_printf("\nSamba version %s\n",samba_version_string());
 492                 d_printf("PID     Username      Group         Machine            Protocol Version       \n");
 493                 d_printf("------------------------------------------------------------------------------\n");
 494
 495                 sessionid_traverse_read(traverse_sessionid, NULL);
 496
 497                 if (processes_only) {
 498                         goto done;
 499                 }
 500         }
 501
 502         if ( show_shares ) {
 503                 if (brief) {
 504                         goto done;
 505                 }
 506
 507                 d_printf("\nService      pid     machine       Connected at\n");
 508                 d_printf("-------------------------------------------------------\n");
 509
 510                 connections_forall_read(traverse_connections, NULL);
 511
 512                 d_printf("\n");
 513
 514                 if ( shares_only ) {
 515                         goto done;
 516                 }
 517         }
 518
 519         if ( show_locks ) {
 520                 int result;
 521                 struct db_context *db;
 522
 523                 db_path = lock_path("locking.tdb");
 524                 if (db_path == NULL) {
 525                         d_printf("Out of memory - exiting\n");
 526                         ret = -1;
 527                         goto done;
 528                 }
 529
 530                 db = db_open(NULL, db_path, 0,
 531                              TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH, O_RDONLY, 0,
 532                              DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
 533
 534                 if (!db) {
 535                         d_printf("%s not initialised\n", db_path);
 536                         d_printf("This is normal if an SMB client has never "
 537                                  "connected to your server.\n");
 538                         TALLOC_FREE(db_path);
 539                         exit(0);
 540                 } else {
 541                         TALLOC_FREE(db);
 542                         TALLOC_FREE(db_path);
 543                 }
 544
 545                 if (!locking_init_readonly()) {
 546                         d_printf("Can't initialise locking module - exiting\n");
 547                         ret = 1;
 548                         goto done;
 549                 }
 550
 551                 result = share_entry_forall(print_share_mode, NULL);
 552
 553                 if (result == 0) {
 554                         d_printf("No locked files\n");
 555                 } else if (result < 0) {
 556                         d_printf("locked file list truncated\n");
 557                 }
 558
 559                 d_printf("\n");
 560
 561                 if (show_brl) {
 562                         brl_forall(print_brl, NULL);
 563                 }
 564
 565                 locking_end();
 566         }
 567
 568         if (show_notify) {
 569                 struct notify_context *n;
 570
 571                 n = notify_init(talloc_tos(), msg_ctx,
 572                                 messaging_tevent_context(msg_ctx));
 573                 if (n == NULL) {
 574                         goto done;
 575                 }
 576                 notify_walk(n, print_notify_rec, NULL);
 577                 TALLOC_FREE(n);
 578         }
 579
 580 done:
 581         TALLOC_FREE(frame);
 582         return ret;
 583 }