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
  49 #define SMB_MAXPIDS             2048
  50 static uid_t            Ucrit_uid = 0;               /* added by OH */
  51 static struct server_id Ucrit_pid[SMB_MAXPIDS];  /* Ugly !!! */   /* added by OH */
  52 static int              Ucrit_MaxPid=0;                    /* added by OH */
  53 static unsigned int     Ucrit_IsActive = 0;                /* added by OH */
  54
  55 static bool verbose, brief;
  56 static bool shares_only;            /* Added by RJS */
  57 static bool locks_only;            /* Added by RJS */
  58 static bool processes_only;
  59 static bool show_brl;
  60 static bool numeric_only;
  61 static bool do_checks = true;
  62
  63 const char *username = NULL;
  64
  65 /* added by OH */
  66 static void Ucrit_addUid(uid_t uid)
  67 {
  68         Ucrit_uid = uid;
  69         Ucrit_IsActive = 1;
  70 }
  71
  72 static unsigned int Ucrit_checkUid(uid_t uid)
  73 {
  74         if ( !Ucrit_IsActive )
  75                 return 1;
  76
  77         if ( uid == Ucrit_uid )
  78                 return 1;
  79
  80         return 0;
  81 }
  82
  83 static unsigned int Ucrit_checkPid(struct server_id pid)
  84 {
  85         int i;
  86
  87         if ( !Ucrit_IsActive )
  88                 return 1;
  89
  90         for (i=0;i<Ucrit_MaxPid;i++) {
  91                 if (serverid_equal(&pid, &Ucrit_pid[i])) {
  92                         return 1;
  93                 }
  94         }
  95
  96         return 0;
  97 }
  98
  99 static bool Ucrit_addPid( struct server_id pid )
 100 {
 101         if ( !Ucrit_IsActive )
 102                 return True;
 103
 104         if ( Ucrit_MaxPid >= SMB_MAXPIDS ) {
 105                 d_printf("ERROR: More than %d pids for user %s!\n",
 106                          SMB_MAXPIDS, uidtoname(Ucrit_uid));
 107
 108                 return False;
 109         }
 110
 111         Ucrit_pid[Ucrit_MaxPid++] = pid;
 112
 113         return True;
 114 }
 115
 116 static int print_share_mode(const struct share_mode_entry *e,
 117                             const char *sharepath,
 118                             const char *fname,
 119                             void *dummy)
 120 {
 121         static int count;
 122
 123         if (do_checks && !is_valid_share_mode_entry(e)) {
 124                 return 0;
 125         }
 126
 127         if (count==0) {
 128                 d_printf("Locked files:\n");
 129                 d_printf("Pid          Uid        DenyMode   Access      R/W        Oplock           SharePath   Name   Time\n");
 130                 d_printf("--------------------------------------------------------------------------------------------------\n");
 131         }
 132         count++;
 133
 134         if (do_checks && !serverid_exists(&e->pid)) {
 135                 /* the process for this entry does not exist any more */
 136                 return 0;
 137         }
 138
 139         if (Ucrit_checkPid(e->pid)) {
 140                 struct server_id_buf tmp;
 141                 d_printf("%-11s  ", server_id_str_buf(e->pid, &tmp));
 142                 d_printf("%-9u  ", (unsigned int)e->uid);
 143                 switch (map_share_mode_to_deny_mode(e->share_access,
 144                                                     e->private_options)) {
 145                         case DENY_NONE: d_printf("DENY_NONE  "); break;
 146                         case DENY_ALL:  d_printf("DENY_ALL   "); break;
 147                         case DENY_DOS:  d_printf("DENY_DOS   "); break;
 148                         case DENY_READ: d_printf("DENY_READ  "); break;
 149                         case DENY_WRITE:printf("DENY_WRITE "); break;
 150                         case DENY_FCB:  d_printf("DENY_FCB "); break;
 151                         default: {
 152                                 d_printf("unknown-please report ! "
 153                                          "e->share_access = 0x%x, "
 154                                          "e->private_options = 0x%x\n",
 155                                          (unsigned int)e->share_access,
 156                                          (unsigned int)e->private_options );
 157                                 break;
 158                         }
 159                 }
 160                 d_printf("0x%-8x  ",(unsigned int)e->access_mask);
 161                 if ((e->access_mask & (FILE_READ_DATA|FILE_WRITE_DATA))==
 162                                 (FILE_READ_DATA|FILE_WRITE_DATA)) {
 163                         d_printf("RDWR       ");
 164                 } else if (e->access_mask & FILE_WRITE_DATA) {
 165                         d_printf("WRONLY     ");
 166                 } else {
 167                         d_printf("RDONLY     ");
 168                 }
 169
 170                 if((e->op_type & (EXCLUSIVE_OPLOCK|BATCH_OPLOCK)) ==
 171                                         (EXCLUSIVE_OPLOCK|BATCH_OPLOCK)) {
 172                         d_printf("EXCLUSIVE+BATCH ");
 173                 } else if (e->op_type & EXCLUSIVE_OPLOCK) {
 174                         d_printf("EXCLUSIVE       ");
 175                 } else if (e->op_type & BATCH_OPLOCK) {
 176                         d_printf("BATCH           ");
 177                 } else if (e->op_type & LEVEL_II_OPLOCK) {
 178                         d_printf("LEVEL_II        ");
 179                 } else if (e->op_type == LEASE_OPLOCK) {
 180                         uint32_t lstate = e->lease->current_state;
 181                         d_printf("LEASE(%s%s%s)%s%s%s      ",
 182                                  (lstate & SMB2_LEASE_READ)?"R":"",
 183                                  (lstate & SMB2_LEASE_WRITE)?"W":"",
 184                                  (lstate & SMB2_LEASE_HANDLE)?"H":"",
 185                                  (lstate & SMB2_LEASE_READ)?"":" ",
 186                                  (lstate & SMB2_LEASE_WRITE)?"":" ",
 187                                  (lstate & SMB2_LEASE_HANDLE)?"":" ");
 188                 } else {
 189                         d_printf("NONE            ");
 190                 }
 191
 192                 d_printf(" %s   %s   %s",sharepath, fname, time_to_asc((time_t)e->time.tv_sec));
 193         }
 194
 195         return 0;
 196 }
 197
 198 static void print_brl(struct file_id id,
 199                         struct server_id pid,
 200                         enum brl_type lock_type,
 201                         enum brl_flavour lock_flav,
 202                         br_off start,
 203                         br_off size,
 204                         void *private_data)
 205 {
 206         static int count;
 207         unsigned int i;
 208         static const struct {
 209                 enum brl_type lock_type;
 210                 const char *desc;
 211         } lock_types[] = {
 212                 { READ_LOCK, "R" },
 213                 { WRITE_LOCK, "W" },
 214                 { PENDING_READ_LOCK, "PR" },
 215                 { PENDING_WRITE_LOCK, "PW" },
 216                 { UNLOCK_LOCK, "U" }
 217         };
 218         const char *desc="X";
 219         const char *sharepath = "";
 220         char *fname = NULL;
 221         struct share_mode_lock *share_mode;
 222         struct server_id_buf tmp;
 223
 224         if (count==0) {
 225                 d_printf("Byte range locks:\n");
 226                 d_printf("Pid        dev:inode       R/W  start     size      SharePath               Name\n");
 227                 d_printf("--------------------------------------------------------------------------------\n");
 228         }
 229         count++;
 230
 231         share_mode = fetch_share_mode_unlocked(NULL, id);
 232         if (share_mode) {
 233                 bool has_stream = share_mode->data->stream_name != NULL;
 234
 235                 fname = talloc_asprintf(NULL, "%s%s%s",
 236                                         share_mode->data->base_name,
 237                                         has_stream ? ":" : "",
 238                                         has_stream ?
 239                                         share_mode->data->stream_name :
 240                                         "");
 241         } else {
 242                 fname = talloc_strdup(NULL, "");
 243                 if (fname == NULL) {
 244                         return;
 245                 }
 246         }
 247
 248         for (i=0;i<ARRAY_SIZE(lock_types);i++) {
 249                 if (lock_type == lock_types[i].lock_type) {
 250                         desc = lock_types[i].desc;
 251                 }
 252         }
 253
 254         d_printf("%-10s %-15s %-4s %-9jd %-9jd %-24s %-24s\n",
 255                  server_id_str_buf(pid, &tmp), file_id_string_tos(&id),
 256                  desc,
 257                  (intmax_t)start, (intmax_t)size,
 258                  sharepath, fname);
 259
 260         TALLOC_FREE(fname);
 261         TALLOC_FREE(share_mode);
 262 }
 263
 264 static int traverse_connections(const struct connections_key *key,
 265                                 const struct connections_data *crec,
 266                                 void *state)
 267 {
 268         struct server_id_buf tmp;
 269
 270         if (crec->cnum == TID_FIELD_INVALID)
 271                 return 0;
 272
 273         if (do_checks &&
 274             (!process_exists(crec->pid) || !Ucrit_checkUid(crec->uid))) {
 275                 return 0;
 276         }
 277
 278         d_printf("%-10s   %s   %-12s  %s",
 279                  crec->servicename, server_id_str_buf(crec->pid, &tmp),
 280                  crec->machine,
 281                  time_to_asc(crec->start));
 282
 283         return 0;
 284 }
 285
 286 static int traverse_sessionid(const char *key, struct sessionid *session,
 287                               void *private_data)
 288 {
 289         fstring uid_str, gid_str;
 290         struct server_id_buf tmp;
 291
 292         if (do_checks &&
 293             (!process_exists(session->pid) ||
 294              !Ucrit_checkUid(session->uid))) {
 295                 return 0;
 296         }
 297
 298         Ucrit_addPid(session->pid);
 299
 300         fstrcpy(uid_str, "-1");
 301
 302         if (session->uid != -1) {
 303                 if (numeric_only) {
 304                         fstr_sprintf(uid_str, "%u", (unsigned int)session->uid);
 305                 } else {
 306                         fstrcpy(uid_str, uidtoname(session->uid));
 307                 }
 308         }
 309
 310         fstrcpy(gid_str, "-1");
 311
 312         if (session->gid != -1) {
 313                 if (numeric_only) {
 314                         fstr_sprintf(gid_str, "%u", (unsigned int)session->gid);
 315                 } else {
 316                         fstrcpy(gid_str, gidtoname(session->gid));
 317                 }
 318         }
 319
 320         d_printf("%-7s   %-12s  %-12s  %-12s (%s) %-12s\n",
 321                  server_id_str_buf(session->pid, &tmp),
 322                  uid_str, gid_str,
 323                  session->remote_machine, session->hostname, session->protocol_ver);
 324
 325         return 0;
 326 }
 327
 328
 329 static void print_notify_recs(const char *path,
 330                               struct notify_db_entry *entries,
 331                               size_t num_entries,
 332                               time_t deleted_time, void *private_data)
 333 {
 334         size_t i;
 335         d_printf("%s\n", path);
 336
 337         if (num_entries == 0) {
 338                 d_printf("deleted %s\n", time_to_asc(deleted_time));
 339         }
 340
 341         for (i=0; i<num_entries; i++) {
 342                 struct notify_db_entry *e = &entries[i];
 343                 struct server_id_buf idbuf;
 344
 345                 printf("%s %x %x\n", server_id_str_buf(e->server, &idbuf),
 346                        (unsigned)e->filter,
 347                        (unsigned)e->subdir_filter);
 348         }
 349         printf("\n");
 350 }
 351
 352 int main(int argc, const char *argv[])
 353 {
 354         int c;
 355         int profile_only = 0;
 356         bool show_processes, show_locks, show_shares;
 357         bool show_notify = false;
 358         poptContext pc;
 359         struct poptOption long_options[] = {
 360                 POPT_AUTOHELP
 361                 {"processes",   'p', POPT_ARG_NONE,     NULL, 'p', "Show processes only" },
 362                 {"verbose",     'v', POPT_ARG_NONE,     NULL, 'v', "Be verbose" },
 363                 {"locks",       'L', POPT_ARG_NONE,     NULL, 'L', "Show locks only" },
 364                 {"shares",      'S', POPT_ARG_NONE,     NULL, 'S', "Show shares only" },
 365                 {"notify",      'N', POPT_ARG_NONE,     NULL, 'N', "Show notifies" },
 366                 {"user",        'u', POPT_ARG_STRING,   &username, 'u', "Switch to user" },
 367                 {"brief",       'b', POPT_ARG_NONE,     NULL, 'b', "Be brief" },
 368                 {"profile",     'P', POPT_ARG_NONE, NULL, 'P', "Do profiling" },
 369                 {"profile-rates", 'R', POPT_ARG_NONE, NULL, 'R', "Show call rates" },
 370                 {"byterange",   'B', POPT_ARG_NONE,     NULL, 'B', "Include byte range locks"},
 371                 {"numeric",     'n', POPT_ARG_NONE,     NULL, 'n', "Numeric uid/gid"},
 372                 {"fast",        'f', POPT_ARG_NONE,     NULL, 'f', "Skip checks if processes still exist"},
 373                 POPT_COMMON_SAMBA
 374                 POPT_TABLEEND
 375         };
 376         TALLOC_CTX *frame = talloc_stackframe();
 377         int ret = 0;
 378         struct messaging_context *msg_ctx;
 379         char *db_path;
 380         bool ok;
 381
 382         sec_init();
 383         smb_init_locale();
 384
 385         setup_logging(argv[0], DEBUG_STDERR);
 386
 387         if (getuid() != geteuid()) {
 388                 d_printf("smbstatus should not be run setuid\n");
 389                 ret = 1;
 390                 goto done;
 391         }
 392
 393         if (getuid() != 0) {
 394                 d_printf("smbstatus only works as root!\n");
 395                 ret = 1;
 396                 goto done;
 397         }
 398
 399
 400         pc = poptGetContext(NULL, argc, argv, long_options,
 401                             POPT_CONTEXT_KEEP_FIRST);
 402
 403         while ((c = poptGetNextOpt(pc)) != -1) {
 404                 switch (c) {
 405                 case 'p':
 406                         processes_only = true;
 407                         break;
 408                 case 'v':
 409                         verbose = true;
 410                         break;
 411                 case 'L':
 412                         locks_only = true;
 413                         break;
 414                 case 'S':
 415                         shares_only = true;
 416                         break;
 417                 case 'N':
 418                         show_notify = true;
 419                         break;
 420                 case 'b':
 421                         brief = true;
 422                         break;
 423                 case 'u':
 424                         Ucrit_addUid(nametouid(poptGetOptArg(pc)));
 425                         break;
 426                 case 'P':
 427                 case 'R':
 428                         profile_only = c;
 429                         break;
 430                 case 'B':
 431                         show_brl = true;
 432                         break;
 433                 case 'n':
 434                         numeric_only = true;
 435                         break;
 436                 case 'f':
 437                         do_checks = false;
 438                         break;
 439                 }
 440         }
 441
 442         /* setup the flags based on the possible combincations */
 443
 444         show_processes = !(shares_only || locks_only || profile_only) || processes_only;
 445         show_locks     = !(shares_only || processes_only || profile_only) || locks_only;
 446         show_shares    = !(processes_only || locks_only || profile_only) || shares_only;
 447
 448         if ( username )
 449                 Ucrit_addUid( nametouid(username) );
 450
 451         if (verbose) {
 452                 d_printf("using configfile = %s\n", get_dyn_CONFIGFILE());
 453         }
 454
 455         if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
 456                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 457                         get_dyn_CONFIGFILE());
 458                 ret = -1;
 459                 goto done;
 460         }
 461
 462
 463         if (lp_clustering()) {
 464                 /*
 465                  * This implicitly initializes the global ctdbd
 466                  * connection, usable by the db_open() calls further
 467                  * down.
 468                  */
 469                 msg_ctx = messaging_init(NULL, samba_tevent_context_init(NULL));
 470                 if (msg_ctx == NULL) {
 471                         fprintf(stderr, "messaging_init failed\n");
 472                         ret = -1;
 473                         goto done;
 474                 }
 475         }
 476
 477         if (!lp_load_global(get_dyn_CONFIGFILE())) {
 478                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 479                         get_dyn_CONFIGFILE());
 480                 ret = -1;
 481                 goto done;
 482         }
 483
 484         switch (profile_only) {
 485                 case 'P':
 486                         /* Dump profile data */
 487                         ok = status_profile_dump(verbose);
 488                         return ok ? 0 : 1;
 489                 case 'R':
 490                         /* Continuously display rate-converted data */
 491                         ok = status_profile_rates(verbose);
 492                         return ok ? 0 : 1;
 493                 default:
 494                         break;
 495         }
 496
 497         if ( show_processes ) {
 498                 d_printf("\nSamba version %s\n",samba_version_string());
 499                 d_printf("PID     Username      Group         Machine            Protocol Version       \n");
 500                 d_printf("------------------------------------------------------------------------------\n");
 501
 502                 sessionid_traverse_read(traverse_sessionid, NULL);
 503
 504                 if (processes_only) {
 505                         goto done;
 506                 }
 507         }
 508
 509         if ( show_shares ) {
 510                 if (verbose) {
 511                         db_path = lock_path("connections.tdb");
 512                         if (db_path == NULL) {
 513                                 d_printf("Out of memory - exiting\n");
 514                                 ret = -1;
 515                                 goto done;
 516                         }
 517                         d_printf("Opened %s\n", db_path);
 518                         TALLOC_FREE(db_path);
 519                 }
 520
 521                 if (brief) {
 522                         goto done;
 523                 }
 524
 525                 d_printf("\nService      pid     machine       Connected at\n");
 526                 d_printf("-------------------------------------------------------\n");
 527
 528                 connections_forall_read(traverse_connections, NULL);
 529
 530                 d_printf("\n");
 531
 532                 if ( shares_only ) {
 533                         goto done;
 534                 }
 535         }
 536
 537         if ( show_locks ) {
 538                 int result;
 539                 struct db_context *db;
 540
 541                 db_path = lock_path("locking.tdb");
 542                 if (db_path == NULL) {
 543                         d_printf("Out of memory - exiting\n");
 544                         ret = -1;
 545                         goto done;
 546                 }
 547
 548                 db = db_open(NULL, db_path, 0,
 549                              TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH, O_RDONLY, 0,
 550                              DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
 551
 552                 if (!db) {
 553                         d_printf("%s not initialised\n", db_path);
 554                         d_printf("This is normal if an SMB client has never "
 555                                  "connected to your server.\n");
 556                         TALLOC_FREE(db_path);
 557                         exit(0);
 558                 } else {
 559                         TALLOC_FREE(db);
 560                         TALLOC_FREE(db_path);
 561                 }
 562
 563                 if (!locking_init_readonly()) {
 564                         d_printf("Can't initialise locking module - exiting\n");
 565                         ret = 1;
 566                         goto done;
 567                 }
 568
 569                 result = share_entry_forall(print_share_mode, NULL);
 570
 571                 if (result == 0) {
 572                         d_printf("No locked files\n");
 573                 } else if (result < 0) {
 574                         d_printf("locked file list truncated\n");
 575                 }
 576
 577                 d_printf("\n");
 578
 579                 if (show_brl) {
 580                         brl_forall(print_brl, NULL);
 581                 }
 582
 583                 locking_end();
 584         }
 585
 586         if (show_notify) {
 587                 struct notify_context *n;
 588
 589                 n = notify_init(talloc_tos(), NULL, NULL);
 590                 if (n == NULL) {
 591                         goto done;
 592                 }
 593                 notify_walk(n, print_notify_recs, NULL);
 594                 TALLOC_FREE(n);
 595         }
 596
 597 done:
 598         TALLOC_FREE(frame);
 599         return ret;
 600 }