src/src/drtables.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2015 */
   6 /* See the file NOTICE for conditions of use and distribution. */
   7
   8
   9 #include "exim.h"
  10
  11 #include <string.h>
  12
  13 /* This module contains tables that define the lookup methods and drivers
  14 that are actually included in the binary. Its contents are controlled by
  15 various macros in config.h that ultimately come from Local/Makefile. They are
  16 all described in src/EDITME. */
  17
  18
  19 lookup_info **lookup_list;
  20 int lookup_list_count = 0;
  21
  22 static int lookup_list_init_done = 0;
  23
  24 /* Table of information about all possible authentication mechamisms. All
  25 entries are always present if any mechanism is declared, but the functions are
  26 set to NULL for those that are not compiled into the binary. */
  27
  28 #ifdef AUTH_CRAM_MD5
  29 #include "auths/cram_md5.h"
  30 #endif
  31
  32 #ifdef AUTH_CYRUS_SASL
  33 #include "auths/cyrus_sasl.h"
  34 #endif
  35
  36 #ifdef AUTH_DOVECOT
  37 #include "auths/dovecot.h"
  38 #endif
  39
  40 #ifdef AUTH_GSASL
  41 #include "auths/gsasl_exim.h"
  42 #endif
  43
  44 #ifdef AUTH_HEIMDAL_GSSAPI
  45 #include "auths/heimdal_gssapi.h"
  46 #endif
  47
  48 #ifdef AUTH_PLAINTEXT
  49 #include "auths/plaintext.h"
  50 #endif
  51
  52 #ifdef AUTH_SPA
  53 #include "auths/spa.h"
  54 #endif
  55
  56 #ifdef AUTH_TLS
  57 #include "auths/tls.h"
  58 #endif
  59
  60 auth_info auths_available[] = {
  61
  62 /* Checking by an expansion condition on plain text */
  63
  64 #ifdef AUTH_CRAM_MD5
  65   {
  66   US"cram_md5",                              /* lookup name */
  67   auth_cram_md5_options,
  68   &auth_cram_md5_options_count,
  69   &auth_cram_md5_option_defaults,
  70   sizeof(auth_cram_md5_options_block),
  71   auth_cram_md5_init,                        /* init function */
  72   auth_cram_md5_server,                      /* server function */
  73   auth_cram_md5_client,                      /* client function */
  74   NULL                                       /* diagnostic function */
  75   },
  76 #endif
  77
  78 #ifdef AUTH_CYRUS_SASL
  79   {
  80   US"cyrus_sasl",           /* lookup name */
  81   auth_cyrus_sasl_options,
  82   &auth_cyrus_sasl_options_count,
  83   &auth_cyrus_sasl_option_defaults,
  84   sizeof(auth_cyrus_sasl_options_block),
  85   auth_cyrus_sasl_init,                      /* init function */
  86   auth_cyrus_sasl_server,                    /* server function */
  87   NULL,                                      /* client function */
  88   auth_cyrus_sasl_version_report             /* diagnostic function */
  89   },
  90 #endif
  91
  92 #ifdef AUTH_DOVECOT
  93   {
  94   US"dovecot",                                /* lookup name */
  95   auth_dovecot_options,
  96   &auth_dovecot_options_count,
  97   &auth_dovecot_option_defaults,
  98   sizeof(auth_dovecot_options_block),
  99   auth_dovecot_init,                          /* init function */
 100   auth_dovecot_server,                        /* server function */
 101   NULL,                                       /* client function */
 102   NULL                                        /* diagnostic function */
 103   },
 104 #endif
 105
 106 #ifdef AUTH_GSASL
 107   {
 108   US"gsasl",                                  /* lookup name */
 109   auth_gsasl_options,
 110   &auth_gsasl_options_count,
 111   &auth_gsasl_option_defaults,
 112   sizeof(auth_gsasl_options_block),
 113   auth_gsasl_init,                            /* init function */
 114   auth_gsasl_server,                          /* server function */
 115   NULL,                                       /* client function */
 116   auth_gsasl_version_report                   /* diagnostic function */
 117   },
 118 #endif
 119
 120 #ifdef AUTH_HEIMDAL_GSSAPI
 121   {
 122   US"heimdal_gssapi",                         /* lookup name */
 123   auth_heimdal_gssapi_options,
 124   &auth_heimdal_gssapi_options_count,
 125   &auth_heimdal_gssapi_option_defaults,
 126   sizeof(auth_heimdal_gssapi_options_block),
 127   auth_heimdal_gssapi_init,                   /* init function */
 128   auth_heimdal_gssapi_server,                 /* server function */
 129   NULL,                                       /* client function */
 130   auth_heimdal_gssapi_version_report          /* diagnostic function */
 131   },
 132 #endif
 133
 134 #ifdef AUTH_PLAINTEXT
 135   {
 136   US"plaintext",                             /* lookup name */
 137   auth_plaintext_options,
 138   &auth_plaintext_options_count,
 139   &auth_plaintext_option_defaults,
 140   sizeof(auth_plaintext_options_block),
 141   auth_plaintext_init,                       /* init function */
 142   auth_plaintext_server,                     /* server function */
 143   auth_plaintext_client,                     /* client function */
 144   NULL                                       /* diagnostic function */
 145   },
 146 #endif
 147
 148 #ifdef AUTH_SPA
 149   {
 150   US"spa",                                   /* lookup name */
 151   auth_spa_options,
 152   &auth_spa_options_count,
 153   &auth_spa_option_defaults,
 154   sizeof(auth_spa_options_block),
 155   auth_spa_init,                             /* init function */
 156   auth_spa_server,                           /* server function */
 157   auth_spa_client,                           /* client function */
 158   NULL                                       /* diagnostic function */
 159   },
 160 #endif
 161
 162 #ifdef AUTH_TLS
 163   {
 164   US"tls",                                   /* lookup name */
 165   auth_tls_options,
 166   &auth_tls_options_count,
 167   &auth_tls_option_defaults,
 168   sizeof(auth_tls_options_block),
 169   auth_tls_init,                             /* init function */
 170   auth_tls_server,                           /* server function */
 171   NULL,                                      /* client function */
 172   NULL                                       /* diagnostic function */
 173   },
 174 #endif
 175
 176 { US"", NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL  }
 177 };
 178
 179
 180 /* Tables of information about which routers and transports are included in the
 181 exim binary. */
 182
 183 /* Pull in the necessary header files */
 184
 185 #include "routers/rf_functions.h"
 186
 187 #ifdef ROUTER_ACCEPT
 188 #include "routers/accept.h"
 189 #endif
 190
 191 #ifdef ROUTER_DNSLOOKUP
 192 #include "routers/dnslookup.h"
 193 #endif
 194
 195 #ifdef ROUTER_MANUALROUTE
 196 #include "routers/manualroute.h"
 197 #endif
 198
 199 #ifdef ROUTER_IPLITERAL
 200 #include "routers/ipliteral.h"
 201 #endif
 202
 203 #ifdef ROUTER_IPLOOKUP
 204 #include "routers/iplookup.h"
 205 #endif
 206
 207 #ifdef ROUTER_QUERYPROGRAM
 208 #include "routers/queryprogram.h"
 209 #endif
 210
 211 #ifdef ROUTER_REDIRECT
 212 #include "routers/redirect.h"
 213 #endif
 214
 215 #ifdef TRANSPORT_APPENDFILE
 216 #include "transports/appendfile.h"
 217 #endif
 218
 219 #ifdef TRANSPORT_AUTOREPLY
 220 #include "transports/autoreply.h"
 221 #endif
 222
 223 #ifdef TRANSPORT_LMTP
 224 #include "transports/lmtp.h"
 225 #endif
 226
 227 #ifdef TRANSPORT_PIPE
 228 #include "transports/pipe.h"
 229 #endif
 230
 231 #ifdef TRANSPORT_SMTP
 232 #include "transports/smtp.h"
 233 #endif
 234
 235
 236 /* Now set up the structures, terminated by an entry with a null name. */
 237
 238 router_info routers_available[] = {
 239 #ifdef ROUTER_ACCEPT
 240   {
 241   US"accept",
 242   accept_router_options,
 243   &accept_router_options_count,
 244   &accept_router_option_defaults,
 245   sizeof(accept_router_options_block),
 246   accept_router_init,
 247   accept_router_entry,
 248   NULL,     /* no tidyup entry */
 249   ri_yestransport
 250   },
 251 #endif
 252 #ifdef ROUTER_DNSLOOKUP
 253   {
 254   US"dnslookup",
 255   dnslookup_router_options,
 256   &dnslookup_router_options_count,
 257   &dnslookup_router_option_defaults,
 258   sizeof(dnslookup_router_options_block),
 259   dnslookup_router_init,
 260   dnslookup_router_entry,
 261   NULL,     /* no tidyup entry */
 262   ri_yestransport
 263   },
 264 #endif
 265 #ifdef ROUTER_IPLITERAL
 266   {
 267   US"ipliteral",
 268   ipliteral_router_options,
 269   &ipliteral_router_options_count,
 270   &ipliteral_router_option_defaults,
 271   sizeof(ipliteral_router_options_block),
 272   ipliteral_router_init,
 273   ipliteral_router_entry,
 274   NULL,     /* no tidyup entry */
 275   ri_yestransport
 276   },
 277 #endif
 278 #ifdef ROUTER_IPLOOKUP
 279   {
 280   US"iplookup",
 281   iplookup_router_options,
 282   &iplookup_router_options_count,
 283   &iplookup_router_option_defaults,
 284   sizeof(iplookup_router_options_block),
 285   iplookup_router_init,
 286   iplookup_router_entry,
 287   NULL,     /* no tidyup entry */
 288   ri_notransport
 289   },
 290 #endif
 291 #ifdef ROUTER_MANUALROUTE
 292   {
 293   US"manualroute",
 294   manualroute_router_options,
 295   &manualroute_router_options_count,
 296   &manualroute_router_option_defaults,
 297   sizeof(manualroute_router_options_block),
 298   manualroute_router_init,
 299   manualroute_router_entry,
 300   NULL,     /* no tidyup entry */
 301   0
 302   },
 303 #endif
 304 #ifdef ROUTER_QUERYPROGRAM
 305   {
 306   US"queryprogram",
 307   queryprogram_router_options,
 308   &queryprogram_router_options_count,
 309   &queryprogram_router_option_defaults,
 310   sizeof(queryprogram_router_options_block),
 311   queryprogram_router_init,
 312   queryprogram_router_entry,
 313   NULL,     /* no tidyup entry */
 314   0
 315   },
 316 #endif
 317 #ifdef ROUTER_REDIRECT
 318   {
 319   US"redirect",
 320   redirect_router_options,
 321   &redirect_router_options_count,
 322   &redirect_router_option_defaults,
 323   sizeof(redirect_router_options_block),
 324   redirect_router_init,
 325   redirect_router_entry,
 326   NULL,     /* no tidyup entry */
 327   ri_notransport
 328   },
 329 #endif
 330 { US"", NULL, NULL, NULL, 0, NULL, NULL, NULL, 0 }
 331 };
 332
 333
 334
 335 transport_info transports_available[] = {
 336 #ifdef TRANSPORT_APPENDFILE
 337   {
 338   US"appendfile",                              /* driver name */
 339   appendfile_transport_options,                /* local options table */
 340   &appendfile_transport_options_count,         /* number of entries */
 341   &appendfile_transport_option_defaults,       /* private options defaults */
 342   sizeof(appendfile_transport_options_block),  /* size of private block */
 343   appendfile_transport_init,                   /* init entry point */
 344   appendfile_transport_entry,                  /* main entry point */
 345   NULL,                                        /* no tidyup entry */
 346   NULL,                                        /* no closedown entry */
 347   TRUE,                                        /* local flag */
 348   },
 349 #endif
 350 #ifdef TRANSPORT_AUTOREPLY
 351   {
 352   US"autoreply",                               /* driver name */
 353   autoreply_transport_options,                 /* local options table */
 354   &autoreply_transport_options_count,          /* number of entries */
 355   &autoreply_transport_option_defaults,        /* private options defaults */
 356   sizeof(autoreply_transport_options_block),   /* size of private block */
 357   autoreply_transport_init,                    /* init entry point */
 358   autoreply_transport_entry,                   /* main entry point */
 359   NULL,                                        /* no tidyup entry */
 360   NULL,                                        /* no closedown entry */
 361   TRUE                                         /* local flag */
 362   },
 363 #endif
 364 #ifdef TRANSPORT_LMTP
 365   {
 366   US"lmtp",                                    /* driver name */
 367   lmtp_transport_options,                      /* local options table */
 368   &lmtp_transport_options_count,               /* number of entries */
 369   &lmtp_transport_option_defaults,             /* private options defaults */
 370   sizeof(lmtp_transport_options_block),        /* size of private block */
 371   lmtp_transport_init,                         /* init entry point */
 372   lmtp_transport_entry,                        /* main entry point */
 373   NULL,                                        /* no tidyup entry */
 374   NULL,                                        /* no closedown entry */
 375   TRUE                                         /* local flag */
 376   },
 377 #endif
 378 #ifdef TRANSPORT_PIPE
 379   {
 380   US"pipe",                                    /* driver name */
 381   pipe_transport_options,                      /* local options table */
 382   &pipe_transport_options_count,               /* number of entries */
 383   &pipe_transport_option_defaults,             /* private options defaults */
 384   sizeof(pipe_transport_options_block),        /* size of private block */
 385   pipe_transport_init,                         /* init entry point */
 386   pipe_transport_entry,                        /* main entry point */
 387   NULL,                                        /* no tidyup entry */
 388   NULL,                                        /* no closedown entry */
 389   TRUE                                         /* local flag */
 390   },
 391 #endif
 392 #ifdef TRANSPORT_SMTP
 393   {
 394   US"smtp",                                    /* driver name */
 395   smtp_transport_options,                      /* local options table */
 396   &smtp_transport_options_count,               /* number of entries */
 397   &smtp_transport_option_defaults,             /* private options defaults */
 398   sizeof(smtp_transport_options_block),        /* size of private block */
 399   smtp_transport_init,                         /* init entry point */
 400   smtp_transport_entry,                        /* main entry point */
 401   NULL,                                        /* no tidyup entry */
 402   smtp_transport_closedown,                    /* close down passed channel */
 403   FALSE                                        /* local flag */
 404   },
 405 #endif
 406 { US"", NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, FALSE }
 407 };
 408
 409 struct lookupmodulestr
 410 {
 411   void *dl;
 412   struct lookup_module_info *info;
 413   struct lookupmodulestr *next;
 414 };
 415
 416 static struct lookupmodulestr *lookupmodules = NULL;
 417
 418 static void addlookupmodule(void *dl, struct lookup_module_info *info)
 419 {
 420   struct lookupmodulestr *p = store_malloc(sizeof(struct lookupmodulestr));
 421   p->dl = dl;
 422   p->info = info;
 423   p->next = lookupmodules;
 424   lookupmodules = p;
 425   lookup_list_count += info->lookupcount;
 426 }
 427
 428 /* only valid after lookup_list and lookup_list_count are assigned */
 429 static void add_lookup_to_list(lookup_info *info)
 430 {
 431   /* need to add the lookup to lookup_list, sorted */
 432   int pos = 0;
 433
 434   /* strategy is to go through the list until we find
 435    * either an empty spot or a name that is higher.
 436    * this can't fail because we have enough space. */
 437   while (lookup_list[pos]
 438       && (Ustrcmp(lookup_list[pos]->name, info->name) <= 0)) {
 439     pos++;
 440   }
 441   if (lookup_list[pos]) {
 442     /* need to insert it, so move all the other items up
 443      * (last slot is still empty, of course) */
 444     memmove(&lookup_list[pos+1],
 445             &lookup_list[pos],
 446             sizeof(lookup_info **) * (lookup_list_count-pos-1));
 447   }
 448   lookup_list[pos] = info;
 449 }
 450
 451
 452 /* These need to be at file level for old versions of gcc (2.95.2 reported),
 453  * which give parse errors on an extern in function scope.  Each entry needs
 454  * to also be invoked in init_lookup_list() below  */
 455
 456 #if defined(LOOKUP_WHOSON) && LOOKUP_WHOSON!=2
 457 extern lookup_module_info whoson_lookup_module_info;
 458 #endif
 459 #if defined(LOOKUP_TESTDB) && LOOKUP_TESTDB!=2
 460 extern lookup_module_info testdb_lookup_module_info;
 461 #endif
 462 #if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2
 463 extern lookup_module_info sqlite_lookup_module_info;
 464 #endif
 465 #ifdef EXPERIMENTAL_SPF
 466 extern lookup_module_info spf_lookup_module_info;
 467 #endif
 468 #if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2
 469 extern lookup_module_info pgsql_lookup_module_info;
 470 #endif
 471 #if defined(LOOKUP_PASSWD) && LOOKUP_PASSWD!=2
 472 extern lookup_module_info passwd_lookup_module_info;
 473 #endif
 474 #if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2
 475 extern lookup_module_info redis_lookup_module_info;
 476 #endif
 477 #if defined(LOOKUP_ORACLE) && LOOKUP_ORACLE!=2
 478 extern lookup_module_info oracle_lookup_module_info;
 479 #endif
 480 #if defined(LOOKUP_NISPLUS) && LOOKUP_NISPLUS!=2
 481 extern lookup_module_info nisplus_lookup_module_info;
 482 #endif
 483 #if defined(LOOKUP_NIS) && LOOKUP_NIS!=2
 484 extern lookup_module_info nis_lookup_module_info;
 485 #endif
 486 #if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2
 487 extern lookup_module_info mysql_lookup_module_info;
 488 #endif
 489 #if defined(LOOKUP_LSEARCH) && LOOKUP_LSEARCH!=2
 490 extern lookup_module_info lsearch_lookup_module_info;
 491 #endif
 492 #ifdef LOOKUP_LDAP
 493 extern lookup_module_info ldap_lookup_module_info;
 494 #endif
 495 #if defined(LOOKUP_IBASE) && LOOKUP_IBASE!=2
 496 extern lookup_module_info ibase_lookup_module_info;
 497 #endif
 498 #if defined(LOOKUP_DSEARCH) && LOOKUP_DSEARCH!=2
 499 extern lookup_module_info dsearch_lookup_module_info;
 500 #endif
 501 #if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2
 502 extern lookup_module_info dnsdb_lookup_module_info;
 503 #endif
 504 #if defined(LOOKUP_DBM) && LOOKUP_DBM!=2
 505 extern lookup_module_info dbmdb_lookup_module_info;
 506 #endif
 507 #if defined(LOOKUP_CDB) && LOOKUP_CDB!=2
 508 extern lookup_module_info cdb_lookup_module_info;
 509 #endif
 510
 511 void init_lookup_list(void)
 512 {
 513 #ifdef LOOKUP_MODULE_DIR
 514   DIR *dd;
 515   struct dirent *ent;
 516   int countmodules = 0;
 517   int moduleerrors = 0;
 518 #endif
 519   struct lookupmodulestr *p;
 520   const pcre *regex_islookupmod = regex_must_compile(
 521       US"\\." DYNLIB_FN_EXT "$", FALSE, TRUE);
 522
 523   if (lookup_list_init_done)
 524     return;
 525   lookup_list_init_done = 1;
 526
 527 #if defined(LOOKUP_CDB) && LOOKUP_CDB!=2
 528   addlookupmodule(NULL, &cdb_lookup_module_info);
 529 #endif
 530
 531 #if defined(LOOKUP_DBM) && LOOKUP_DBM!=2
 532   addlookupmodule(NULL, &dbmdb_lookup_module_info);
 533 #endif
 534
 535 #if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2
 536   addlookupmodule(NULL, &dnsdb_lookup_module_info);
 537 #endif
 538
 539 #if defined(LOOKUP_DSEARCH) && LOOKUP_DSEARCH!=2
 540   addlookupmodule(NULL, &dsearch_lookup_module_info);
 541 #endif
 542
 543 #if defined(LOOKUP_IBASE) && LOOKUP_IBASE!=2
 544   addlookupmodule(NULL, &ibase_lookup_module_info);
 545 #endif
 546
 547 #ifdef LOOKUP_LDAP
 548   addlookupmodule(NULL, &ldap_lookup_module_info);
 549 #endif
 550
 551 #if defined(LOOKUP_LSEARCH) && LOOKUP_LSEARCH!=2
 552   addlookupmodule(NULL, &lsearch_lookup_module_info);
 553 #endif
 554
 555 #if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2
 556   addlookupmodule(NULL, &mysql_lookup_module_info);
 557 #endif
 558
 559 #if defined(LOOKUP_NIS) && LOOKUP_NIS!=2
 560   addlookupmodule(NULL, &nis_lookup_module_info);
 561 #endif
 562
 563 #if defined(LOOKUP_NISPLUS) && LOOKUP_NISPLUS!=2
 564   addlookupmodule(NULL, &nisplus_lookup_module_info);
 565 #endif
 566
 567 #if defined(LOOKUP_ORACLE) && LOOKUP_ORACLE!=2
 568   addlookupmodule(NULL, &oracle_lookup_module_info);
 569 #endif
 570
 571 #if defined(LOOKUP_PASSWD) && LOOKUP_PASSWD!=2
 572   addlookupmodule(NULL, &passwd_lookup_module_info);
 573 #endif
 574
 575 #if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2
 576   addlookupmodule(NULL, &pgsql_lookup_module_info);
 577 #endif
 578
 579 #if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2
 580   addlookupmodule(NULL, &redis_lookup_module_info);
 581 #endif
 582
 583 #ifdef EXPERIMENTAL_SPF
 584   addlookupmodule(NULL, &spf_lookup_module_info);
 585 #endif
 586
 587 #if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2
 588   addlookupmodule(NULL, &sqlite_lookup_module_info);
 589 #endif
 590
 591 #if defined(LOOKUP_TESTDB) && LOOKUP_TESTDB!=2
 592   addlookupmodule(NULL, &testdb_lookup_module_info);
 593 #endif
 594
 595 #if defined(LOOKUP_WHOSON) && LOOKUP_WHOSON!=2
 596   addlookupmodule(NULL, &whoson_lookup_module_info);
 597 #endif
 598
 599 #ifdef LOOKUP_MODULE_DIR
 600   dd = opendir(LOOKUP_MODULE_DIR);
 601   if (dd == NULL) {
 602     DEBUG(D_lookup) debug_printf("Couldn't open %s: not loading lookup modules\n", LOOKUP_MODULE_DIR);
 603     log_write(0, LOG_MAIN, "Couldn't open %s: not loading lookup modules\n", LOOKUP_MODULE_DIR);
 604   }
 605   else {
 606     DEBUG(D_lookup) debug_printf("Loading lookup modules from %s\n", LOOKUP_MODULE_DIR);
 607     while ((ent = readdir(dd)) != NULL) {
 608       char *name = ent->d_name;
 609       int len = (int)strlen(name);
 610       if (pcre_exec(regex_islookupmod, NULL, name, len, 0, PCRE_EOPT, NULL, 0) >= 0) {
 611         int pathnamelen = len + (int)strlen(LOOKUP_MODULE_DIR) + 2;
 612         void *dl;
 613         struct lookup_module_info *info;
 614         const char *errormsg;
 615
 616         /* SRH: am I being paranoid here or what? */
 617         if (pathnamelen > big_buffer_size) {
 618           fprintf(stderr, "Loading lookup modules: %s/%s: name too long\n", LOOKUP_MODULE_DIR, name);
 619           log_write(0, LOG_MAIN|LOG_PANIC, "%s/%s: name too long\n", LOOKUP_MODULE_DIR, name);
 620           continue;
 621         }
 622
 623         /* SRH: snprintf here? */
 624         sprintf(CS big_buffer, "%s/%s", LOOKUP_MODULE_DIR, name);
 625
 626         dl = dlopen(CS big_buffer, RTLD_NOW);// TJ was LAZY
 627         if (dl == NULL) {
 628           fprintf(stderr, "Error loading %s: %s\n", name, dlerror());
 629           moduleerrors++;
 630           log_write(0, LOG_MAIN|LOG_PANIC, "Error loading lookup module %s: %s\n", name, dlerror());
 631           continue;
 632         }
 633
 634         /* FreeBSD nsdispatch() can trigger dlerror() errors about
 635          * _nss_cache_cycle_prevention_function; we need to clear the dlerror()
 636          * state before calling dlsym(), so that any error afterwards only
 637          * comes from dlsym().
 638          */
 639         errormsg = dlerror();
 640
 641         info = (struct lookup_module_info*) dlsym(dl, "_lookup_module_info");
 642         if ((errormsg = dlerror()) != NULL) {
 643           fprintf(stderr, "%s does not appear to be a lookup module (%s)\n", name, errormsg);
 644           dlclose(dl);
 645           moduleerrors++;
 646           log_write(0, LOG_MAIN|LOG_PANIC, "%s does not appear to be a lookup module (%s)\n", name, errormsg);
 647           continue;
 648         }
 649         if (info->magic != LOOKUP_MODULE_INFO_MAGIC) {
 650           fprintf(stderr, "Lookup module %s is not compatible with this version of Exim\n", name);
 651           dlclose(dl);
 652           moduleerrors++;
 653           log_write(0, LOG_MAIN|LOG_PANIC, "Lookup module %s is not compatible with this version of Exim\n", name);
 654           continue;
 655         }
 656
 657         addlookupmodule(dl, info);
 658         DEBUG(D_lookup) debug_printf("Loaded \"%s\" (%d lookup types)\n", name, info->lookupcount);
 659         countmodules++;
 660       }
 661     }
 662     closedir(dd);
 663   }
 664
 665   DEBUG(D_lookup) debug_printf("Loaded %d lookup modules\n", countmodules);
 666 #endif
 667
 668   store_free((void*)regex_islookupmod);
 669
 670   DEBUG(D_lookup) debug_printf("Total %d lookups\n", lookup_list_count);
 671
 672   lookup_list = store_malloc(sizeof(lookup_info *) * lookup_list_count);
 673   memset(lookup_list, 0, sizeof(lookup_info *) * lookup_list_count);
 674
 675   /* now add all lookups to the real list */
 676   p = lookupmodules;
 677   while (p) {
 678     int j;
 679     struct lookupmodulestr *pnext;
 680
 681     for (j = 0; j < p->info->lookupcount; j++)
 682       add_lookup_to_list(p->info->lookups[j]);
 683
 684     pnext = p->next;
 685     store_free(p);
 686     p = pnext;
 687   }
 688   /* just to be sure */
 689   lookupmodules = NULL;
 690 }
 691
 692 /* End of drtables.c */