res/snmp/agent.c

   1 /*
   2  * Copyright (C) 2006 Voop as
   3  * Thorsten Lockert <tholo@voop.as>
   4  *
   5  * This program is free software, distributed under the terms of
   6  * the GNU General Public License Version 2. See the LICENSE file
   7  * at the top of the source tree.
   8  */
   9
  10 /*! \file
  11  *
  12  * \brief SNMP Agent / SubAgent support for Asterisk
  13  *
  14  * \author Thorsten Lockert <tholo@voop.as>
  15  */
  16
  17 #include "asterisk.h"
  18
  19 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  20
  21 #include <net-snmp/net-snmp-config.h>
  22 #include <net-snmp/net-snmp-includes.h>
  23 #include <net-snmp/agent/net-snmp-agent-includes.h>
  24
  25 #include "asterisk/channel.h"
  26 #include "asterisk/logger.h"
  27 #include "asterisk/options.h"
  28 #include "asterisk/indications.h"
  29 #include "asterisk/version.h"
  30 #include "asterisk/pbx.h"
  31
  32 /* Colission between Net-SNMP and Asterisk */
  33 #define unload_module ast_unload_module
  34 #include "asterisk/module.h"
  35 #undef unload_module
  36
  37 #include "agent.h"
  38
  39 /* Helper functions in Net-SNMP, header file not installed by default */
  40 int header_generic(struct variable *, oid *, size_t *, int, size_t *, WriteMethod **);
  41 int header_simple_table(struct variable *, oid *, size_t *, int, size_t *, WriteMethod **, int);
  42 int register_sysORTable(oid *, size_t, const char *);
  43 int unregister_sysORTable(oid *, size_t);
  44
  45 /* Not defined in header files */
  46 extern char ast_config_AST_SOCKET[];
  47
  48 /* Forward declaration */
  49 static void init_asterisk_mib(void);
  50
  51 /*
  52  * Anchor for all the Asterisk MIB values
  53  */
  54 static oid asterisk_oid[] = { 1, 3, 6, 1, 4, 1, 22736, 1 };
  55
  56 /*
  57  * MIB values -- these correspond to values in the Asterisk MIB,
  58  * and MUST be kept in sync with the MIB for things to work as
  59  * expected.
  60  */
  61 #define ASTVERSION                              1
  62 #define         ASTVERSTRING                    1
  63 #define         ASTVERTAG                               2
  64
  65 #define ASTCONFIGURATION                2
  66 #define         ASTCONFUPTIME                   1
  67 #define         ASTCONFRELOADTIME               2
  68 #define         ASTCONFPID                              3
  69 #define         ASTCONFSOCKET                   4
  70
  71 #define ASTMODULES                              3
  72 #define         ASTMODCOUNT                             1
  73
  74 #define ASTINDICATIONS                  4
  75 #define         ASTINDCOUNT                             1
  76 #define         ASTINDCURRENT                   2
  77
  78 #define         ASTINDTABLE                             3
  79 #define                 ASTINDINDEX                             1
  80 #define                 ASTINDCOUNTRY                   2
  81 #define                 ASTINDALIAS                             3
  82 #define                 ASTINDDESCRIPTION               4
  83
  84 #define ASTCHANNELS                             5
  85 #define         ASTCHANCOUNT                    1
  86
  87 #define         ASTCHANTABLE                    2
  88 #define                 ASTCHANINDEX                    1
  89 #define                 ASTCHANNAME                             2
  90 #define                 ASTCHANLANGUAGE                 3
  91 #define                 ASTCHANTYPE                             4
  92 #define                 ASTCHANMUSICCLASS               5
  93 #define                 ASTCHANBRIDGE                   6
  94 #define                 ASTCHANMASQ                             7
  95 #define                 ASTCHANMASQR                    8
  96 #define                 ASTCHANWHENHANGUP               9
  97 #define                 ASTCHANAPP                              10
  98 #define                 ASTCHANDATA                             11
  99 #define                 ASTCHANCONTEXT                  12
 100 #define                 ASTCHANMACROCONTEXT             13
 101 #define                 ASTCHANMACROEXTEN               14
 102 #define                 ASTCHANMACROPRI                 15
 103 #define                 ASTCHANEXTEN                    16
 104 #define                 ASTCHANPRI                              17
 105 #define                 ASTCHANACCOUNTCODE              18
 106 #define                 ASTCHANFORWARDTO                19
 107 #define                 ASTCHANUNIQUEID                 20
 108 #define                 ASTCHANCALLGROUP                21
 109 #define                 ASTCHANPICKUPGROUP              22
 110 #define                 ASTCHANSTATE                    23
 111 #define                 ASTCHANMUTED                    24
 112 #define                 ASTCHANRINGS                    25
 113 #define                 ASTCHANCIDDNID                  26
 114 #define                 ASTCHANCIDNUM                   27
 115 #define                 ASTCHANCIDNAME                  28
 116 #define                 ASTCHANCIDANI                   29
 117 #define                 ASTCHANCIDRDNIS                 30
 118 #define                 ASTCHANCIDPRES                  31
 119 #define                 ASTCHANCIDANI2                  32
 120 #define                 ASTCHANCIDTON                   33
 121 #define                 ASTCHANCIDTNS                   34
 122 #define                 ASTCHANAMAFLAGS                 35
 123 #define                 ASTCHANADSI                             36
 124 #define                 ASTCHANTONEZONE                 37
 125 #define                 ASTCHANHANGUPCAUSE              38
 126 #define                 ASTCHANVARIABLES                39
 127 #define                 ASTCHANFLAGS                    40
 128 #define                 ASTCHANTRANSFERCAP              41
 129
 130 #define         ASTCHANTYPECOUNT                3
 131
 132 #define         ASTCHANTYPETABLE                4
 133 #define                 ASTCHANTYPEINDEX                1
 134 #define                 ASTCHANTYPENAME                 2
 135 #define                 ASTCHANTYPEDESC                 3
 136 #define                 ASTCHANTYPEDEVSTATE             4
 137 #define                 ASTCHANTYPEINDICATIONS  5
 138 #define                 ASTCHANTYPETRANSFER             6
 139 #define                 ASTCHANTYPECHANNELS             7
 140
 141 void *agent_thread(void *arg)
 142 {
 143     ast_verbose(VERBOSE_PREFIX_2 "Starting %sAgent\n", res_snmp_agentx_subagent ? "Sub" : "");
 144
 145     snmp_enable_stderrlog();
 146
 147     if (res_snmp_agentx_subagent)
 148                 netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
 149                                                            NETSNMP_DS_AGENT_ROLE,
 150                                                            1);
 151
 152     init_agent("asterisk");
 153
 154     init_asterisk_mib();
 155
 156     init_snmp("asterisk");
 157
 158     if (!res_snmp_agentx_subagent)
 159                 init_master_agent();
 160
 161     while (res_snmp_dont_stop)
 162                 agent_check_and_process(1);
 163
 164     snmp_shutdown("asterisk");
 165
 166     ast_verbose(VERBOSE_PREFIX_2 "Terminating %sAgent\n",
 167                                 res_snmp_agentx_subagent ? "Sub" : "");
 168
 169     return NULL;
 170 }
 171
 172 static u_char *
 173 ast_var_channels(struct variable *vp, oid *name, size_t *length,
 174                                  int exact, size_t *var_len, WriteMethod **write_method)
 175 {
 176     static unsigned long long_ret;
 177
 178     if (header_generic(vp, name, length, exact, var_len, write_method))
 179                 return NULL;
 180
 181     switch (vp->magic) {
 182         case ASTCHANCOUNT:
 183                 long_ret = ast_active_channels();
 184                 return (u_char *)&long_ret;
 185         default:
 186                 break;
 187     }
 188     return NULL;
 189 }
 190
 191 static u_char *ast_var_channels_table(struct variable *vp, oid *name, size_t *length,
 192                                                                         int exact, size_t *var_len, WriteMethod **write_method)
 193 {
 194     static unsigned long long_ret;
 195     static u_char bits_ret[2];
 196     static char string_ret[256];
 197     struct ast_channel *chan, *bridge;
 198     struct timeval tval;
 199     u_char *ret;
 200     int i, bit;
 201
 202     if (header_simple_table(vp, name, length, exact, var_len, write_method, ast_active_channels()))
 203                 return NULL;
 204
 205     i = name[*length - 1] - 1;
 206     for (chan = ast_channel_walk_locked(NULL);
 207                  chan && i;
 208                  chan = ast_channel_walk_locked(chan), i--)
 209                 ast_channel_unlock(chan);
 210     if (chan == NULL)
 211                 return NULL;
 212         *var_len = sizeof(long_ret);
 213
 214     switch (vp->magic) {
 215         case ASTCHANINDEX:
 216                 long_ret = name[*length - 1];
 217                 ret = (u_char *)&long_ret;
 218                 break;
 219         case ASTCHANNAME:
 220                 if (!ast_strlen_zero(chan->name)) {
 221                         strncpy(string_ret, chan->name, sizeof(string_ret));
 222                         string_ret[sizeof(string_ret) - 1] = '\0';
 223                         *var_len = strlen(string_ret);
 224                         ret = (u_char *)string_ret;
 225                 }
 226                 else
 227                         ret = NULL;
 228                 break;
 229         case ASTCHANLANGUAGE:
 230                 if (!ast_strlen_zero(chan->language)) {
 231                         strncpy(string_ret, chan->language, sizeof(string_ret));
 232                         string_ret[sizeof(string_ret) - 1] = '\0';
 233                         *var_len = strlen(string_ret);
 234                         ret = (u_char *)string_ret;
 235                 }
 236                 else
 237                         ret = NULL;
 238                 break;
 239         case ASTCHANTYPE:
 240                 strncpy(string_ret, chan->tech->type, sizeof(string_ret));
 241                 string_ret[sizeof(string_ret) - 1] = '\0';
 242                 *var_len = strlen(string_ret);
 243                 ret = (u_char *)string_ret;
 244                 break;
 245         case ASTCHANMUSICCLASS:
 246                 if (!ast_strlen_zero(chan->musicclass)) {
 247                         strncpy(string_ret, chan->musicclass, sizeof(string_ret));
 248                         string_ret[sizeof(string_ret) - 1] = '\0';
 249                         *var_len = strlen(string_ret);
 250                         ret = (u_char *)string_ret;
 251                 }
 252                 else
 253                         ret = NULL;
 254                 break;
 255         case ASTCHANBRIDGE:
 256                 if ((bridge = ast_bridged_channel(chan)) != NULL) {
 257                         strncpy(string_ret, bridge->name, sizeof(string_ret));
 258                         string_ret[sizeof(string_ret) - 1] = '\0';
 259                         *var_len = strlen(string_ret);
 260                         ret = (u_char *)string_ret;
 261                 }
 262                 else
 263                         ret = NULL;
 264                 break;
 265         case ASTCHANMASQ:
 266                 if (chan->masq && !ast_strlen_zero(chan->masq->name)) {
 267                         strncpy(string_ret, chan->masq->name, sizeof(string_ret));
 268                         string_ret[sizeof(string_ret) - 1] = '\0';
 269                         *var_len = strlen(string_ret);
 270                         ret = (u_char *)string_ret;
 271                 }
 272                 else
 273                         ret = NULL;
 274                 break;
 275         case ASTCHANMASQR:
 276                 if (chan->masqr && !ast_strlen_zero(chan->masqr->name)) {
 277                         strncpy(string_ret, chan->masqr->name, sizeof(string_ret));
 278                         string_ret[sizeof(string_ret) - 1] = '\0';
 279                         *var_len = strlen(string_ret);
 280                         ret = (u_char *)string_ret;
 281                 }
 282                 else
 283                         ret = NULL;
 284                 break;
 285         case ASTCHANWHENHANGUP:
 286                 if (chan->whentohangup) {
 287                         gettimeofday(&tval, NULL);
 288                         long_ret = difftime(chan->whentohangup, tval.tv_sec) * 100 - tval.tv_usec / 10000;
 289                         ret= (u_char *)&long_ret;
 290                 }
 291                 else
 292                         ret = NULL;
 293                 break;
 294         case ASTCHANAPP:
 295                 if (chan->appl) {
 296                         strncpy(string_ret, chan->appl, sizeof(string_ret));
 297                         string_ret[sizeof(string_ret) - 1] = '\0';
 298                         *var_len = strlen(string_ret);
 299                         ret = (u_char *)string_ret;
 300                 }
 301                 else
 302                         ret = NULL;
 303                 break;
 304         case ASTCHANDATA:
 305                 if (chan->data) {
 306                         strncpy(string_ret, chan->data, sizeof(string_ret));
 307                         string_ret[sizeof(string_ret) - 1] = '\0';
 308                         *var_len = strlen(string_ret);
 309                         ret = (u_char *)string_ret;
 310                 }
 311                 else
 312                         ret = NULL;
 313                 break;
 314         case ASTCHANCONTEXT:
 315                 strncpy(string_ret, chan->context, sizeof(string_ret));
 316                 string_ret[sizeof(string_ret) - 1] = '\0';
 317                 *var_len = strlen(string_ret);
 318                 ret = (u_char *)string_ret;
 319                 break;
 320         case ASTCHANMACROCONTEXT:
 321                 strncpy(string_ret, chan->macrocontext, sizeof(string_ret));
 322                 string_ret[sizeof(string_ret) - 1] = '\0';
 323                 *var_len = strlen(string_ret);
 324                 ret = (u_char *)string_ret;
 325                 break;
 326         case ASTCHANMACROEXTEN:
 327                 strncpy(string_ret, chan->macroexten, sizeof(string_ret));
 328                 string_ret[sizeof(string_ret) - 1] = '\0';
 329                 *var_len = strlen(string_ret);
 330                 ret = (u_char *)string_ret;
 331                 break;
 332         case ASTCHANMACROPRI:
 333                 long_ret = chan->macropriority;
 334                 ret = (u_char *)&long_ret;
 335                 break;
 336         case ASTCHANEXTEN:
 337                 strncpy(string_ret, chan->exten, sizeof(string_ret));
 338                 string_ret[sizeof(string_ret) - 1] = '\0';
 339                 *var_len = strlen(string_ret);
 340                 ret = (u_char *)string_ret;
 341                 break;
 342         case ASTCHANPRI:
 343                 long_ret = chan->priority;
 344                 ret = (u_char *)&long_ret;
 345                 break;
 346         case ASTCHANACCOUNTCODE:
 347                 if (!ast_strlen_zero(chan->accountcode)) {
 348                         strncpy(string_ret, chan->accountcode, sizeof(string_ret));
 349                         string_ret[sizeof(string_ret) - 1] = '\0';
 350                         *var_len = strlen(string_ret);
 351                         ret = (u_char *)string_ret;
 352                 }
 353                 else
 354                         ret = NULL;
 355                 break;
 356         case ASTCHANFORWARDTO:
 357                 if (!ast_strlen_zero(chan->call_forward)) {
 358                         strncpy(string_ret, chan->call_forward, sizeof(string_ret));
 359                         string_ret[sizeof(string_ret) - 1] = '\0';
 360                         *var_len = strlen(string_ret);
 361                         ret = (u_char *)string_ret;
 362                 }
 363                 else
 364                         ret = NULL;
 365                 break;
 366         case ASTCHANUNIQUEID:
 367                 strncpy(string_ret, chan->uniqueid, sizeof(string_ret));
 368                 string_ret[sizeof(string_ret) - 1] = '\0';
 369                 *var_len = strlen(string_ret);
 370                 ret = (u_char *)string_ret;
 371                 break;
 372         case ASTCHANCALLGROUP:
 373                 long_ret = chan->callgroup;
 374                 ret = (u_char *)&long_ret;
 375                 break;
 376         case ASTCHANPICKUPGROUP:
 377                 long_ret = chan->pickupgroup;
 378                 ret = (u_char *)&long_ret;
 379                 break;
 380         case ASTCHANSTATE:
 381                 long_ret = chan->_state & 0xffff;
 382                 ret = (u_char *)&long_ret;
 383                 break;
 384         case ASTCHANMUTED:
 385                 long_ret = chan->_state & AST_STATE_MUTE ? 1 : 2;
 386                 ret = (u_char *)&long_ret;
 387                 break;
 388         case ASTCHANRINGS:
 389                 long_ret = chan->rings;
 390                 ret = (u_char *)&long_ret;
 391                 break;
 392         case ASTCHANCIDDNID:
 393                 if (chan->cid.cid_dnid) {
 394                         strncpy(string_ret, chan->cid.cid_dnid, sizeof(string_ret));
 395                         string_ret[sizeof(string_ret) - 1] = '\0';
 396                         *var_len = strlen(string_ret);
 397                         ret = (u_char *)string_ret;
 398                 }
 399                 else
 400                         ret = NULL;
 401                 break;
 402         case ASTCHANCIDNUM:
 403                 if (chan->cid.cid_num) {
 404                         strncpy(string_ret, chan->cid.cid_num, sizeof(string_ret));
 405                         string_ret[sizeof(string_ret) - 1] = '\0';
 406                         *var_len = strlen(string_ret);
 407                         ret = (u_char *)string_ret;
 408                 }
 409                 else
 410                         ret = NULL;
 411                 break;
 412         case ASTCHANCIDNAME:
 413                 if (chan->cid.cid_name) {
 414                         strncpy(string_ret, chan->cid.cid_name, sizeof(string_ret));
 415                         string_ret[sizeof(string_ret) - 1] = '\0';
 416                         *var_len = strlen(string_ret);
 417                         ret = (u_char *)string_ret;
 418                 }
 419                 else
 420                         ret = NULL;
 421                 break;
 422         case ASTCHANCIDANI:
 423                 if (chan->cid.cid_ani) {
 424                         strncpy(string_ret, chan->cid.cid_ani, sizeof(string_ret));
 425                         string_ret[sizeof(string_ret) - 1] = '\0';
 426                         *var_len = strlen(string_ret);
 427                         ret = (u_char *)string_ret;
 428                 }
 429                 else
 430                         ret = NULL;
 431                 break;
 432         case ASTCHANCIDRDNIS:
 433                 if (chan->cid.cid_rdnis) {
 434                         strncpy(string_ret, chan->cid.cid_rdnis, sizeof(string_ret));
 435                         string_ret[sizeof(string_ret) - 1] = '\0';
 436                         *var_len = strlen(string_ret);
 437                         ret = (u_char *)string_ret;
 438                 }
 439                 else
 440                         ret = NULL;
 441                 break;
 442         case ASTCHANCIDPRES:
 443                 long_ret = chan->cid.cid_pres;
 444                 ret = (u_char *)&long_ret;
 445                 break;
 446         case ASTCHANCIDANI2:
 447                 long_ret = chan->cid.cid_ani2;
 448                 ret = (u_char *)&long_ret;
 449                 break;
 450         case ASTCHANCIDTON:
 451                 long_ret = chan->cid.cid_ton;
 452                 ret = (u_char *)&long_ret;
 453                 break;
 454         case ASTCHANCIDTNS:
 455                 long_ret = chan->cid.cid_tns;
 456                 ret = (u_char *)&long_ret;
 457                 break;
 458         case ASTCHANAMAFLAGS:
 459                 long_ret = chan->amaflags;
 460                 ret = (u_char *)&long_ret;
 461                 break;
 462         case ASTCHANADSI:
 463                 long_ret = chan->adsicpe;
 464                 ret = (u_char *)&long_ret;
 465                 break;
 466         case ASTCHANTONEZONE:
 467                 if (chan->zone) {
 468                         strncpy(string_ret, chan->zone->country, sizeof(string_ret));
 469                         string_ret[sizeof(string_ret) - 1] = '\0';
 470                         *var_len = strlen(string_ret);
 471                         ret = (u_char *)string_ret;
 472                 }
 473                 else
 474                         ret = NULL;
 475                 break;
 476         case ASTCHANHANGUPCAUSE:
 477                 long_ret = chan->hangupcause;
 478                 ret = (u_char *)&long_ret;
 479                 break;
 480         case ASTCHANVARIABLES:
 481                 if (pbx_builtin_serialize_variables(chan, string_ret, sizeof(string_ret))) {
 482                         *var_len = strlen(string_ret);
 483                         ret = (u_char *)string_ret;
 484                 }
 485                 else
 486                         ret = NULL;
 487                 break;
 488         case ASTCHANFLAGS:
 489                 bits_ret[0] = 0;
 490                 for (bit = 0; bit < 8; bit++)
 491                         bits_ret[0] |= ((chan->flags & (1 << bit)) >> bit) << (7 - bit);
 492                 bits_ret[1] = 0;
 493                 for (bit = 0; bit < 8; bit++)
 494                         bits_ret[1] |= (((chan->flags >> 8) & (1 << bit)) >> bit) << (7 - bit);
 495                 *var_len = 2;
 496                 ret = bits_ret;
 497                 break;
 498         case ASTCHANTRANSFERCAP:
 499                 long_ret = chan->transfercapability;
 500                 ret = (u_char *)&long_ret;
 501                 break;
 502         default:
 503                 ret = NULL;
 504                 break;
 505     }
 506     ast_channel_unlock(chan);
 507     return ret;
 508 }
 509
 510 static u_char *ast_var_channel_types(struct variable *vp, oid *name, size_t *length,
 511                                                                    int exact, size_t *var_len, WriteMethod **write_method)
 512 {
 513     static unsigned long long_ret;
 514         struct ast_variable *channel_types, *next;
 515
 516     if (header_generic(vp, name, length, exact, var_len, write_method))
 517                 return NULL;
 518
 519     switch (vp->magic) {
 520         case ASTCHANTYPECOUNT:
 521                 long_ret = 0;
 522                 for (channel_types = next = ast_channeltype_list(); next; next = next->next) {
 523                         long_ret++;
 524                 }
 525                 ast_variables_destroy(channel_types);
 526                 return (u_char *)&long_ret;
 527         default:
 528                 break;
 529     }
 530     return NULL;
 531 }
 532
 533 static u_char *ast_var_channel_types_table(struct variable *vp, oid *name, size_t *length,
 534                                                                                 int exact, size_t *var_len, WriteMethod **write_method)
 535 {
 536         const struct ast_channel_tech *tech = NULL;
 537         struct ast_variable *channel_types, *next;
 538     static unsigned long long_ret;
 539     struct ast_channel *chan;
 540     u_long i;
 541
 542     if (header_simple_table(vp, name, length, exact, var_len, write_method, -1))
 543                 return NULL;
 544
 545         channel_types = ast_channeltype_list();
 546         for (i = 1, next = channel_types; next && i != name[*length - 1]; next = next->next, i++)
 547                 ;
 548         if (next != NULL)
 549                 tech = ast_get_channel_tech(next->name);
 550         ast_variables_destroy(channel_types);
 551     if (next == NULL || tech == NULL)
 552                 return NULL;
 553
 554     switch (vp->magic) {
 555         case ASTCHANTYPEINDEX:
 556                 long_ret = name[*length - 1];
 557                 return (u_char *)&long_ret;
 558         case ASTCHANTYPENAME:
 559                 *var_len = strlen(tech->type);
 560                 return (u_char *)tech->type;
 561         case ASTCHANTYPEDESC:
 562                 *var_len = strlen(tech->description);
 563                 return (u_char *)tech->description;
 564         case ASTCHANTYPEDEVSTATE:
 565                 long_ret = tech->devicestate ? 1 : 2;
 566                 return (u_char *)&long_ret;
 567         case ASTCHANTYPEINDICATIONS:
 568                 long_ret = tech->indicate ? 1 : 2;
 569                 return (u_char *)&long_ret;
 570         case ASTCHANTYPETRANSFER:
 571                 long_ret = tech->transfer ? 1 : 2;
 572                 return (u_char *)&long_ret;
 573         case ASTCHANTYPECHANNELS:
 574                 long_ret = 0;
 575                 for (chan = ast_channel_walk_locked(NULL); chan; chan = ast_channel_walk_locked(chan)) {
 576                         ast_channel_unlock(chan);
 577                         if (chan->tech == tech)
 578                                 long_ret++;
 579                 }
 580                 return (u_char *)&long_ret;
 581         default:
 582                 break;
 583     }
 584     return NULL;
 585 }
 586
 587 static u_char *ast_var_Config(struct variable *vp, oid *name, size_t *length,
 588                                                          int exact, size_t *var_len, WriteMethod **write_method)
 589 {
 590     static unsigned long long_ret;
 591     struct timeval tval;
 592
 593     if (header_generic(vp, name, length, exact, var_len, write_method))
 594                 return NULL;
 595
 596     switch (vp->magic) {
 597         case ASTCONFUPTIME:
 598                 gettimeofday(&tval, NULL);
 599                 long_ret = difftime(tval.tv_sec, ast_startuptime) * 100 + tval.tv_usec / 10000;
 600                 return (u_char *)&long_ret;
 601         case ASTCONFRELOADTIME:
 602                 gettimeofday(&tval, NULL);
 603                 if (ast_lastreloadtime)
 604                         long_ret = difftime(tval.tv_sec, ast_lastreloadtime) * 100 + tval.tv_usec / 10000;
 605                 else
 606                         long_ret = difftime(tval.tv_sec, ast_startuptime) * 100 + tval.tv_usec / 10000;
 607                 return (u_char *)&long_ret;
 608         case ASTCONFPID:
 609                 long_ret = getpid();
 610                 return (u_char *)&long_ret;
 611         case ASTCONFSOCKET:
 612                 *var_len = strlen(ast_config_AST_SOCKET);
 613                 return (u_char *)ast_config_AST_SOCKET;
 614         default:
 615                 break;
 616     }
 617     return NULL;
 618 }
 619
 620 static u_char *ast_var_indications(struct variable *vp, oid *name, size_t *length,
 621                                                                   int exact, size_t *var_len, WriteMethod **write_method)
 622 {
 623     static unsigned long long_ret;
 624     struct ind_tone_zone *tz = NULL;
 625
 626     if (header_generic(vp, name, length, exact, var_len, write_method))
 627                 return NULL;
 628
 629     switch (vp->magic) {
 630         case ASTINDCOUNT:
 631                 long_ret = 0;
 632                 while ( (tz = ast_walk_indications(tz)) )
 633                         long_ret++;
 634
 635                 return (u_char *)&long_ret;
 636         case ASTINDCURRENT:
 637                 tz = ast_get_indication_zone(NULL);
 638                 if (tz) {
 639                         *var_len = strlen(tz->country);
 640                         return (u_char *)tz->country;
 641                 }
 642                 *var_len = 0;
 643                 return NULL;
 644         default:
 645                 break;
 646     }
 647     return NULL;
 648 }
 649
 650 static u_char *ast_var_indications_table(struct variable *vp, oid *name, size_t *length,
 651                                                                            int exact, size_t *var_len, WriteMethod **write_method)
 652 {
 653     static unsigned long long_ret;
 654     struct ind_tone_zone *tz = NULL;
 655     int i;
 656
 657     if (header_simple_table(vp, name, length, exact, var_len, write_method, -1))
 658                 return NULL;
 659
 660     i = name[*length - 1] - 1;
 661     while ( (tz = ast_walk_indications(tz)) && i )
 662         i--;
 663     if (tz == NULL)
 664                 return NULL;
 665
 666     switch (vp->magic) {
 667         case ASTINDINDEX:
 668                 long_ret = name[*length - 1];
 669                 return (u_char *)&long_ret;
 670         case ASTINDCOUNTRY:
 671                 *var_len = strlen(tz->country);
 672                 return (u_char *)tz->country;
 673         case ASTINDALIAS:
 674                 if (tz->alias) {
 675                         *var_len = strlen(tz->alias);
 676                         return (u_char *)tz->alias;
 677                 }
 678                 return NULL;
 679         case ASTINDDESCRIPTION:
 680                 *var_len = strlen(tz->description);
 681                 return (u_char *)tz->description;
 682         default:
 683                 break;
 684     }
 685     return NULL;
 686 }
 687
 688 static int countmodule(const char *mod, const char *desc, int use, const char *like)
 689 {
 690     return 1;
 691 }
 692
 693 static u_char *ast_var_Modules(struct variable *vp, oid *name, size_t *length,
 694                                                           int exact, size_t *var_len, WriteMethod **write_method)
 695 {
 696     static unsigned long long_ret;
 697
 698     if (header_generic(vp, name, length, exact, var_len, write_method))
 699                 return NULL;
 700
 701     switch (vp->magic) {
 702         case ASTMODCOUNT:
 703                 long_ret = ast_update_module_list(countmodule, NULL);
 704                 return (u_char *)&long_ret;
 705         default:
 706                 break;
 707     }
 708     return NULL;
 709 }
 710
 711 static u_char *ast_var_Version(struct variable *vp, oid *name, size_t *length,
 712                                                           int exact, size_t *var_len, WriteMethod **write_method)
 713 {
 714     static unsigned long long_ret;
 715
 716     if (header_generic(vp, name, length, exact, var_len, write_method))
 717                 return NULL;
 718
 719     switch (vp->magic) {
 720         case ASTVERSTRING:
 721                 *var_len = strlen(ASTERISK_VERSION);
 722                 return (u_char *)ASTERISK_VERSION;
 723         case ASTVERTAG:
 724                 long_ret = ASTERISK_VERSION_NUM;
 725                 return (u_char *)&long_ret;
 726         default:
 727                 break;
 728     }
 729     return NULL;
 730 }
 731
 732 static int term_asterisk_mib(int majorID, int minorID, void *serverarg, void *clientarg)
 733 {
 734     unregister_sysORTable(asterisk_oid, OID_LENGTH(asterisk_oid));
 735     return 0;
 736 }
 737
 738 static void init_asterisk_mib(void)
 739 {
 740     static struct variable4 asterisk_vars[] = {
 741                 {ASTVERSTRING,           ASN_OCTET_STR, RONLY, ast_var_Version,             2, {ASTVERSION, ASTVERSTRING}},
 742                 {ASTVERTAG,              ASN_UNSIGNED,  RONLY, ast_var_Version,             2, {ASTVERSION, ASTVERTAG}},
 743                 {ASTCONFUPTIME,          ASN_TIMETICKS, RONLY, ast_var_Config,              2, {ASTCONFIGURATION, ASTCONFUPTIME}},
 744                 {ASTCONFRELOADTIME,      ASN_TIMETICKS, RONLY, ast_var_Config,              2, {ASTCONFIGURATION, ASTCONFRELOADTIME}},
 745                 {ASTCONFPID,             ASN_INTEGER,   RONLY, ast_var_Config,              2, {ASTCONFIGURATION, ASTCONFPID}},
 746                 {ASTCONFSOCKET,          ASN_OCTET_STR, RONLY, ast_var_Config,              2, {ASTCONFIGURATION, ASTCONFSOCKET}},
 747                 {ASTMODCOUNT,            ASN_INTEGER,   RONLY, ast_var_Modules ,            2, {ASTMODULES, ASTMODCOUNT}},
 748                 {ASTINDCOUNT,            ASN_INTEGER,   RONLY, ast_var_indications,         2, {ASTINDICATIONS, ASTINDCOUNT}},
 749                 {ASTINDCURRENT,          ASN_OCTET_STR, RONLY, ast_var_indications,         2, {ASTINDICATIONS, ASTINDCURRENT}},
 750                 {ASTINDINDEX,            ASN_INTEGER,   RONLY, ast_var_indications_table,   4, {ASTINDICATIONS, ASTINDTABLE, 1, ASTINDINDEX}},
 751                 {ASTINDCOUNTRY,          ASN_OCTET_STR, RONLY, ast_var_indications_table,   4, {ASTINDICATIONS, ASTINDTABLE, 1, ASTINDCOUNTRY}},
 752                 {ASTINDALIAS,            ASN_OCTET_STR, RONLY, ast_var_indications_table,   4, {ASTINDICATIONS, ASTINDTABLE, 1, ASTINDALIAS}},
 753                 {ASTINDDESCRIPTION,      ASN_OCTET_STR, RONLY, ast_var_indications_table,   4, {ASTINDICATIONS, ASTINDTABLE, 1, ASTINDDESCRIPTION}},
 754                 {ASTCHANCOUNT,           ASN_GAUGE,     RONLY, ast_var_channels,            2, {ASTCHANNELS, ASTCHANCOUNT}},
 755                 {ASTCHANINDEX,           ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANINDEX}},
 756                 {ASTCHANNAME,            ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANNAME}},
 757                 {ASTCHANLANGUAGE,        ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANLANGUAGE}},
 758                 {ASTCHANTYPE,            ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANTYPE}},
 759                 {ASTCHANMUSICCLASS,      ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANMUSICCLASS}},
 760                 {ASTCHANBRIDGE,          ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANBRIDGE}},
 761                 {ASTCHANMASQ,            ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANMASQ}},
 762                 {ASTCHANMASQR,           ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANMASQR}},
 763                 {ASTCHANWHENHANGUP,      ASN_TIMETICKS, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANWHENHANGUP}},
 764                 {ASTCHANAPP,             ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANAPP}},
 765                 {ASTCHANDATA,            ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANDATA}},
 766                 {ASTCHANCONTEXT,         ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCONTEXT}},
 767                 {ASTCHANMACROCONTEXT,    ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANMACROCONTEXT}},
 768                 {ASTCHANMACROEXTEN,      ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANMACROEXTEN}},
 769                 {ASTCHANMACROPRI,        ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANMACROPRI}},
 770                 {ASTCHANEXTEN,           ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANEXTEN}},
 771                 {ASTCHANPRI,             ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANPRI}},
 772                 {ASTCHANACCOUNTCODE,     ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANACCOUNTCODE}},
 773                 {ASTCHANFORWARDTO,       ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANFORWARDTO}},
 774                 {ASTCHANUNIQUEID,        ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANUNIQUEID}},
 775                 {ASTCHANCALLGROUP,       ASN_UNSIGNED,  RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCALLGROUP}},
 776                 {ASTCHANPICKUPGROUP,     ASN_UNSIGNED,  RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANPICKUPGROUP}},
 777                 {ASTCHANSTATE,           ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANSTATE}},
 778                 {ASTCHANMUTED,           ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANMUTED}},
 779                 {ASTCHANRINGS,           ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANRINGS}},
 780                 {ASTCHANCIDDNID,         ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCIDDNID}},
 781                 {ASTCHANCIDNUM,          ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCIDNUM}},
 782                 {ASTCHANCIDNAME,         ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCIDNAME}},
 783                 {ASTCHANCIDANI,          ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCIDANI}},
 784                 {ASTCHANCIDRDNIS,        ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCIDRDNIS}},
 785                 {ASTCHANCIDPRES,         ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCIDPRES}},
 786                 {ASTCHANCIDANI2,         ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCIDANI2}},
 787                 {ASTCHANCIDTON,          ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCIDTON}},
 788                 {ASTCHANCIDTNS,          ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANCIDTNS}},
 789                 {ASTCHANAMAFLAGS,        ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANAMAFLAGS}},
 790                 {ASTCHANADSI,            ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANADSI}},
 791                 {ASTCHANTONEZONE,        ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANTONEZONE}},
 792                 {ASTCHANHANGUPCAUSE,     ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANHANGUPCAUSE}},
 793                 {ASTCHANVARIABLES,       ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANVARIABLES}},
 794                 {ASTCHANFLAGS,           ASN_OCTET_STR, RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANFLAGS}},
 795                 {ASTCHANTRANSFERCAP,     ASN_INTEGER,   RONLY, ast_var_channels_table,      4, {ASTCHANNELS, ASTCHANTABLE, 1, ASTCHANTRANSFERCAP}},
 796                 {ASTCHANTYPECOUNT,       ASN_INTEGER,   RONLY, ast_var_channel_types,       2, {ASTCHANNELS, ASTCHANTYPECOUNT}},
 797                 {ASTCHANTYPEINDEX,       ASN_INTEGER,   RONLY, ast_var_channel_types_table, 4, {ASTCHANNELS, ASTCHANTYPETABLE, 1, ASTCHANTYPEINDEX}},
 798                 {ASTCHANTYPENAME,        ASN_OCTET_STR, RONLY, ast_var_channel_types_table, 4, {ASTCHANNELS, ASTCHANTYPETABLE, 1, ASTCHANTYPENAME}},
 799                 {ASTCHANTYPEDESC,        ASN_OCTET_STR, RONLY, ast_var_channel_types_table, 4, {ASTCHANNELS, ASTCHANTYPETABLE, 1, ASTCHANTYPEDESC}},
 800                 {ASTCHANTYPEDEVSTATE,    ASN_INTEGER,   RONLY, ast_var_channel_types_table, 4, {ASTCHANNELS, ASTCHANTYPETABLE, 1, ASTCHANTYPEDEVSTATE}},
 801                 {ASTCHANTYPEINDICATIONS, ASN_INTEGER,   RONLY, ast_var_channel_types_table, 4, {ASTCHANNELS, ASTCHANTYPETABLE, 1, ASTCHANTYPEINDICATIONS}},
 802                 {ASTCHANTYPETRANSFER,    ASN_INTEGER,   RONLY, ast_var_channel_types_table, 4, {ASTCHANNELS, ASTCHANTYPETABLE, 1, ASTCHANTYPETRANSFER}},
 803                 {ASTCHANTYPECHANNELS,    ASN_GAUGE,     RONLY, ast_var_channel_types_table, 4, {ASTCHANNELS, ASTCHANTYPETABLE, 1, ASTCHANTYPECHANNELS}},
 804     };
 805
 806     register_sysORTable(asterisk_oid, OID_LENGTH(asterisk_oid),
 807                         "ASTERISK-MIB implementation for Asterisk.");
 808
 809     REGISTER_MIB("res_snmp", asterisk_vars, variable4, asterisk_oid);
 810
 811     snmp_register_callback(SNMP_CALLBACK_LIBRARY,
 812                            SNMP_CALLBACK_SHUTDOWN,
 813                            term_asterisk_mib, NULL);
 814 }
 815
 816 /*
 817  * Local Variables:
 818  * c-basic-offset: 4
 819  * c-file-offsets: ((case-label . 0))
 820  * tab-width: 4
 821  * indent-tabs-mode: t
 822  * End:
 823  */