src/pazpar2_config.c

   1 /* This file is part of Pazpar2.
   2    Copyright (C) 2006-2011 Index Data
   3
   4 Pazpar2 is free software; you can redistribute it and/or modify it under
   5 the terms of the GNU General Public License as published by the Free
   6 Software Foundation; either version 2, or (at your option) any later
   7 version.
   8
   9 Pazpar2 is distributed in the hope that it will be useful, but WITHOUT ANY
  10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17
  18 */
  19
  20 #if HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include <string.h>
  25 #include <assert.h>
  26
  27 #include <libxml/parser.h>
  28 #include <libxml/tree.h>
  29
  30 #include <yaz/yaz-util.h>
  31 #include <yaz/nmem.h>
  32 #include <yaz/snprintf.h>
  33 #include <yaz/tpath.h>
  34 #include <yaz/xml_include.h>
  35
  36 #include <sys/types.h>
  37 #include <sys/stat.h>
  38 #if HAVE_UNISTD_H
  39 #include <unistd.h>
  40 #endif
  41 #include "ppmutex.h"
  42 #include "incref.h"
  43 #include "pazpar2_config.h"
  44 #include "settings.h"
  45 #include "eventl.h"
  46 #include "http.h"
  47
  48 struct conf_config
  49 {
  50     NMEM nmem; /* for conf_config and servers memory */
  51     struct conf_server *servers;
  52
  53     int no_threads;
  54     WRBUF confdir;
  55     iochan_man_t iochan_man;
  56     database_hosts_t database_hosts;
  57 };
  58
  59
  60 static char *parse_settings(struct conf_config *config,
  61                             NMEM nmem, xmlNode *node);
  62
  63 static void conf_metadata_assign(NMEM nmem,
  64                                  struct conf_metadata * metadata,
  65                                  const char *name,
  66                                  enum conf_metadata_type type,
  67                                  enum conf_metadata_merge merge,
  68                                  enum conf_setting_type setting,
  69                                  int brief,
  70                                  int termlist,
  71                                  int rank,
  72                                  int sortkey_offset,
  73                                  enum conf_metadata_mergekey mt)
  74 {
  75     assert(nmem && metadata && name);
  76
  77     metadata->name = nmem_strdup(nmem, name);
  78
  79     metadata->type = type;
  80
  81     // enforcing that type_year is always range_merge
  82     if (metadata->type == Metadata_type_year)
  83         metadata->merge = Metadata_merge_range;
  84     else
  85         metadata->merge = merge;
  86
  87     metadata->setting = setting;
  88     metadata->brief = brief;
  89     metadata->termlist = termlist;
  90     metadata->rank = rank;
  91     metadata->sortkey_offset = sortkey_offset;
  92     metadata->mergekey = mt;
  93 }
  94
  95
  96 static void conf_sortkey_assign(NMEM nmem,
  97                                 struct conf_sortkey * sortkey,
  98                                 const char *name,
  99                                 enum conf_sortkey_type type)
 100 {
 101     assert(nmem && sortkey && name);
 102
 103     sortkey->name = nmem_strdup(nmem, name);
 104     sortkey->type = type;
 105 }
 106
 107
 108 static struct conf_service *service_init(struct conf_server *server,
 109                                          int num_metadata, int num_sortkeys,
 110                                          const char *service_id)
 111 {
 112     struct conf_service * service = 0;
 113     NMEM nmem = nmem_create();
 114
 115     service = nmem_malloc(nmem, sizeof(struct conf_service));
 116     service->mutex = 0;
 117     service->ref_count = 1;
 118     service->nmem = nmem;
 119     service->next = 0;
 120     service->settings = 0;
 121     service->databases = 0;
 122     service->server = server;
 123     service->session_timeout = 60; /* default session timeout */
 124     service->z3950_session_timeout = 180;
 125     service->z3950_operation_timeout = 30;
 126
 127     service->relevance_pct = 0;
 128     service->sort_pct = 0;
 129     service->mergekey_pct = 0;
 130     service->facet_pct = 0;
 131
 132     service->id = service_id ? nmem_strdup(nmem, service_id) : 0;
 133     service->num_metadata = num_metadata;
 134     service->metadata = 0;
 135     if (service->num_metadata)
 136       service->metadata
 137           = nmem_malloc(nmem,
 138                         sizeof(struct conf_metadata) * service->num_metadata);
 139     service->num_sortkeys = num_sortkeys;
 140     service->sortkeys = 0;
 141     if (service->num_sortkeys)
 142         service->sortkeys
 143             = nmem_malloc(nmem,
 144                           sizeof(struct conf_sortkey) * service->num_sortkeys);
 145     service->dictionary = 0;
 146     return service;
 147 }
 148
 149 static struct conf_metadata* conf_service_add_metadata(
 150     struct conf_service *service,
 151     int field_id,
 152     const char *name,
 153     enum conf_metadata_type type,
 154     enum conf_metadata_merge merge,
 155     enum conf_setting_type setting,
 156     int brief,
 157     int termlist,
 158     int rank,
 159     int sortkey_offset,
 160     enum conf_metadata_mergekey mt)
 161 {
 162     struct conf_metadata * md = 0;
 163
 164     if (!service || !service->metadata || !service->num_metadata
 165         || field_id < 0  || !(field_id < service->num_metadata))
 166         return 0;
 167
 168     md = service->metadata + field_id;
 169     conf_metadata_assign(service->nmem, md, name, type, merge, setting,
 170                          brief, termlist, rank, sortkey_offset,
 171                          mt);
 172     return md;
 173 }
 174
 175
 176 static struct conf_sortkey * conf_service_add_sortkey(
 177     struct conf_service *service,
 178     int field_id,
 179     const char *name,
 180     enum conf_sortkey_type type)
 181 {
 182     struct conf_sortkey * sk = 0;
 183
 184     if (!service || !service->sortkeys || !service->num_sortkeys
 185         || field_id < 0  || !(field_id < service->num_sortkeys))
 186         return 0;
 187
 188     //sk = &((service->sortkeys)[field_id]);
 189     sk = service->sortkeys + field_id;
 190     conf_sortkey_assign(service->nmem, sk, name, type);
 191
 192     return sk;
 193 }
 194
 195
 196 int conf_service_metadata_field_id(struct conf_service *service,
 197                                    const char * name)
 198 {
 199     int i = 0;
 200
 201     if (!service || !service->metadata || !service->num_metadata)
 202         return -1;
 203
 204     for(i = 0; i < service->num_metadata; i++) {
 205         if (!strcmp(name, (service->metadata[i]).name))
 206             return i;
 207     }
 208
 209     return -1;
 210 }
 211
 212
 213 int conf_service_sortkey_field_id(struct conf_service *service,
 214                                   const char * name)
 215 {
 216     int i = 0;
 217
 218     if (!service || !service->sortkeys || !service->num_sortkeys)
 219         return -1;
 220
 221     for(i = 0; i < service->num_sortkeys; i++) {
 222         if (!strcmp(name, (service->sortkeys[i]).name))
 223             return i;
 224     }
 225
 226     return -1;
 227 }
 228
 229 static void conf_dir_path(struct conf_config *config, WRBUF w, const char *src)
 230 {
 231     if (config->confdir && wrbuf_len(config->confdir) > 0 &&
 232         !yaz_is_abspath(src))
 233     {
 234         wrbuf_printf(w, "%s/%s", wrbuf_cstr(config->confdir), src);
 235     }
 236     else
 237         wrbuf_puts(w, src);
 238 }
 239
 240 void service_destroy(struct conf_service *service)
 241 {
 242     if (service)
 243     {
 244         if (!pazpar2_decref(&service->ref_count, service->mutex))
 245         {
 246             pp2_charset_destroy(service->relevance_pct);
 247             pp2_charset_destroy(service->sort_pct);
 248             pp2_charset_destroy(service->mergekey_pct);
 249             pp2_charset_destroy(service->facet_pct);
 250             yaz_mutex_destroy(&service->mutex);
 251             nmem_destroy(service->nmem);
 252         }
 253     }
 254 }
 255
 256 void service_incref(struct conf_service *service)
 257 {
 258     yaz_log(YLOG_LOG, "service_incref. p=%p cnt=%d", service,
 259             service->ref_count);
 260     pazpar2_incref(&service->ref_count, service->mutex);
 261 }
 262
 263 static int parse_metadata(struct conf_service *service, xmlNode *n,
 264                           int *md_node, int *sk_node)
 265 {
 266     xmlChar *xml_name = xmlGetProp(n, (xmlChar *) "name");
 267     xmlChar *xml_brief = xmlGetProp(n, (xmlChar *) "brief");
 268     xmlChar *xml_sortkey = xmlGetProp(n, (xmlChar *) "sortkey");
 269     xmlChar *xml_merge = xmlGetProp(n, (xmlChar *) "merge");
 270     xmlChar *xml_type = xmlGetProp(n, (xmlChar *) "type");
 271     xmlChar *xml_termlist = xmlGetProp(n, (xmlChar *) "termlist");
 272     xmlChar *xml_rank = xmlGetProp(n, (xmlChar *) "rank");
 273     xmlChar *xml_setting = xmlGetProp(n, (xmlChar *) "setting");
 274     xmlChar *xml_mergekey = xmlGetProp(n, (xmlChar *) "mergekey");
 275
 276     enum conf_metadata_type type = Metadata_type_generic;
 277     enum conf_metadata_merge merge = Metadata_merge_no;
 278     enum conf_setting_type setting = Metadata_setting_no;
 279     enum conf_sortkey_type sk_type = Metadata_sortkey_relevance;
 280     enum conf_metadata_mergekey mergekey_type = Metadata_mergekey_no;
 281     int brief = 0;
 282     int termlist = 0;
 283     int rank = 0;
 284     int sortkey_offset = 0;
 285
 286     // now do the parsing logic
 287     if (!xml_name)
 288     {
 289         yaz_log(YLOG_FATAL, "Must specify name in metadata element");
 290         return -1;
 291     }
 292     if (xml_brief)
 293     {
 294         if (!strcmp((const char *) xml_brief, "yes"))
 295             brief = 1;
 296         else if (strcmp((const char *) xml_brief, "no"))
 297         {
 298             yaz_log(YLOG_FATAL, "metadata/brief must be yes or no");
 299             return -1;
 300         }
 301     }
 302     else
 303         brief = 0;
 304
 305     if (xml_termlist)
 306     {
 307         if (!strcmp((const char *) xml_termlist, "yes"))
 308             termlist = 1;
 309         else if (strcmp((const char *) xml_termlist, "no"))
 310         {
 311             yaz_log(YLOG_FATAL, "metadata/termlist must be yes or no");
 312             return -1;
 313         }
 314     }
 315     else
 316         termlist = 0;
 317
 318     if (xml_rank)
 319         rank = atoi((const char *) xml_rank);
 320     else
 321         rank = 0;
 322
 323     if (xml_type)
 324     {
 325         if (!strcmp((const char *) xml_type, "generic"))
 326             type = Metadata_type_generic;
 327         else if (!strcmp((const char *) xml_type, "year"))
 328             type = Metadata_type_year;
 329         else if (!strcmp((const char *) xml_type, "date"))
 330             type = Metadata_type_date;
 331         else
 332         {
 333             yaz_log(YLOG_FATAL,
 334                     "Unknown value for metadata/type: %s", xml_type);
 335             return -1;
 336         }
 337     }
 338     else
 339         type = Metadata_type_generic;
 340
 341     if (xml_merge)
 342     {
 343         if (!strcmp((const char *) xml_merge, "no"))
 344             merge = Metadata_merge_no;
 345         else if (!strcmp((const char *) xml_merge, "unique"))
 346             merge = Metadata_merge_unique;
 347         else if (!strcmp((const char *) xml_merge, "longest"))
 348             merge = Metadata_merge_longest;
 349         else if (!strcmp((const char *) xml_merge, "range"))
 350             merge = Metadata_merge_range;
 351         else if (!strcmp((const char *) xml_merge, "all"))
 352             merge = Metadata_merge_all;
 353         else
 354         {
 355             yaz_log(YLOG_FATAL,
 356                     "Unknown value for metadata/merge: %s", xml_merge);
 357             return -1;
 358         }
 359     }
 360     else
 361         merge = Metadata_merge_no;
 362
 363     if (xml_setting)
 364     {
 365         if (!strcmp((const char *) xml_setting, "no"))
 366             setting = Metadata_setting_no;
 367         else if (!strcmp((const char *) xml_setting, "postproc"))
 368             setting = Metadata_setting_postproc;
 369         else if (!strcmp((const char *) xml_setting, "parameter"))
 370             setting = Metadata_setting_parameter;
 371         else
 372         {
 373             yaz_log(YLOG_FATAL,
 374                     "Unknown value for medadata/setting: %s", xml_setting);
 375             return -1;
 376         }
 377     }
 378
 379     // add a sortkey if so specified
 380     if (xml_sortkey && strcmp((const char *) xml_sortkey, "no"))
 381     {
 382         if (merge == Metadata_merge_no)
 383         {
 384             yaz_log(YLOG_FATAL,
 385                     "Can't specify sortkey on a non-merged field");
 386             return -1;
 387         }
 388         if (!strcmp((const char *) xml_sortkey, "numeric"))
 389             sk_type = Metadata_sortkey_numeric;
 390         else if (!strcmp((const char *) xml_sortkey, "skiparticle"))
 391             sk_type = Metadata_sortkey_skiparticle;
 392         else
 393         {
 394             yaz_log(YLOG_FATAL,
 395                     "Unknown sortkey in metadata element: %s",
 396                     xml_sortkey);
 397             return -1;
 398         }
 399         sortkey_offset = *sk_node;
 400
 401         conf_service_add_sortkey(service, *sk_node,
 402                                  (const char *) xml_name, sk_type);
 403
 404         (*sk_node)++;
 405     }
 406     else
 407         sortkey_offset = -1;
 408
 409     if (xml_mergekey)
 410     {
 411         if (!strcmp((const char *) xml_mergekey, "required"))
 412             mergekey_type = Metadata_mergekey_required;
 413         else if (!strcmp((const char *) xml_mergekey, "optional"))
 414             mergekey_type = Metadata_mergekey_optional;
 415         else if (!strcmp((const char *) xml_mergekey, "no"))
 416             mergekey_type = Metadata_mergekey_no;
 417         else
 418         {
 419             yaz_log(YLOG_FATAL, "Unknown value for mergekey: %s", xml_mergekey);
 420             return -1;
 421         }
 422     }
 423
 424
 425     // metadata known, assign values
 426     conf_service_add_metadata(service, *md_node,
 427                               (const char *) xml_name,
 428                               type, merge, setting,
 429                               brief, termlist, rank, sortkey_offset,
 430                               mergekey_type);
 431
 432     xmlFree(xml_name);
 433     xmlFree(xml_brief);
 434     xmlFree(xml_sortkey);
 435     xmlFree(xml_merge);
 436     xmlFree(xml_type);
 437     xmlFree(xml_termlist);
 438     xmlFree(xml_rank);
 439     xmlFree(xml_setting);
 440     xmlFree(xml_mergekey);
 441     (*md_node)++;
 442     return 0;
 443 }
 444
 445 static struct conf_service *service_create_static(struct conf_server *server,
 446                                                   xmlNode *node,
 447                                                   const char *service_id)
 448 {
 449     xmlNode *n;
 450     int md_node = 0;
 451     int sk_node = 0;
 452
 453     struct conf_service *service = 0;
 454     int num_metadata = 0;
 455     int num_sortkeys = 0;
 456     int got_settings = 0;
 457
 458     // count num_metadata and num_sortkeys
 459     for (n = node->children; n; n = n->next)
 460         if (n->type == XML_ELEMENT_NODE && !strcmp((const char *)
 461                                                    n->name, "metadata"))
 462         {
 463             xmlChar *sortkey = xmlGetProp(n, (xmlChar *) "sortkey");
 464             num_metadata++;
 465             if (sortkey && strcmp((const char *) sortkey, "no"))
 466                 num_sortkeys++;
 467             xmlFree(sortkey);
 468         }
 469
 470     service = service_init(server, num_metadata, num_sortkeys, service_id);
 471
 472     for (n = node->children; n; n = n->next)
 473     {
 474         if (n->type != XML_ELEMENT_NODE)
 475             continue;
 476         if (!strcmp((const char *) n->name, "timeout"))
 477         {
 478             xmlChar *src = xmlGetProp(n, (xmlChar *) "session");
 479             if (src)
 480             {
 481                 service->session_timeout = atoi((const char *) src);
 482                 xmlFree(src);
 483                 if (service->session_timeout < 9)
 484                 {
 485                     yaz_log(YLOG_FATAL, "session timeout out of range");
 486                     return 0;
 487                 }
 488             }
 489             src = xmlGetProp(n, (xmlChar *) "z3950_operation");
 490             if (src)
 491             {
 492                 service->z3950_operation_timeout = atoi((const char *) src);
 493                 xmlFree(src);
 494                 if (service->z3950_session_timeout < 9)
 495                 {
 496                     yaz_log(YLOG_FATAL, "Z39.50 operation timeout out of range");
 497                     return 0;
 498                 }
 499             }
 500             src = xmlGetProp(n, (xmlChar *) "z3950_session");
 501             if (src)
 502             {
 503                 service->z3950_session_timeout = atoi((const char *) src);
 504                 xmlFree(src);
 505                 if (service->z3950_session_timeout < 9)
 506                 {
 507                     yaz_log(YLOG_FATAL, "Z39.50 session timeout out of range");
 508                     return 0;
 509                 }
 510             }
 511         }
 512         else if (!strcmp((const char *) n->name, "settings"))
 513             got_settings++;
 514         else if (!strcmp((const char *) n->name, "relevance"))
 515         {
 516             if (service->relevance_pct)
 517             {
 518                 yaz_log(YLOG_LOG, "relevance may not repeat in service");
 519                 return 0;
 520             }
 521             else
 522             {
 523                 service->relevance_pct = pp2_charset_create_xml(n);
 524                 if (!service->relevance_pct)
 525                     return 0;
 526             }
 527         }
 528         else if (!strcmp((const char *) n->name, "sort"))
 529         {
 530             if (service->sort_pct)
 531             {
 532                 yaz_log(YLOG_LOG, "sort may not repeat in service");
 533                 return 0;
 534             }
 535             else
 536             {
 537                 service->sort_pct = pp2_charset_create_xml(n);
 538                 if (!service->sort_pct)
 539                     return 0;
 540             }
 541         }
 542         else if (!strcmp((const char *) n->name, "mergekey"))
 543         {
 544             if (service->mergekey_pct)
 545             {
 546                 yaz_log(YLOG_LOG, "mergekey may not repeat in service");
 547                 return 0;
 548             }
 549             else
 550             {
 551                 service->mergekey_pct = pp2_charset_create_xml(n);
 552                 if (!service->mergekey_pct)
 553                     return 0;
 554             }
 555         }
 556         else if (!strcmp((const char *) n->name, "facet"))
 557         {
 558             if (service->facet_pct)
 559             {
 560                 yaz_log(YLOG_LOG, "facet may not repeat in service");
 561                 return 0;
 562             }
 563             else
 564             {
 565                 service->facet_pct = pp2_charset_create_xml(n);
 566                 if (!service->facet_pct)
 567                     return 0;
 568             }
 569         }
 570         else if (!strcmp((const char *) n->name, (const char *) "metadata"))
 571         {
 572             if (parse_metadata(service, n, &md_node, &sk_node))
 573                 return 0;
 574         }
 575         else
 576         {
 577             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 578             return 0;
 579         }
 580     }
 581     if (got_settings)
 582     {
 583         int pass;
 584         /* metadata has been read.. Consider now settings */
 585         init_settings(service);
 586         for (pass = 1; pass <= 2; pass++)
 587         {
 588             for (n = node->children; n; n = n->next)
 589             {
 590                 if (n->type != XML_ELEMENT_NODE)
 591                     continue;
 592                 if (!strcmp((const char *) n->name, "settings"))
 593                 {
 594                     xmlChar *src = xmlGetProp(n, (xmlChar *) "src");
 595                     if (src)
 596                     {
 597                         WRBUF w = wrbuf_alloc();
 598                         conf_dir_path(server->config, w, (const char *) src);
 599                         settings_read_file(service, wrbuf_cstr(w), pass);
 600                         wrbuf_destroy(w);
 601                         xmlFree(src);
 602                     }
 603                     else
 604                     {
 605                         settings_read_node(service, n, pass);
 606                     }
 607                 }
 608             }
 609         }
 610     }
 611     return service;
 612 }
 613
 614 static char *parse_settings(struct conf_config *config,
 615                             NMEM nmem, xmlNode *node)
 616 {
 617     xmlChar *src = xmlGetProp(node, (xmlChar *) "src");
 618     char *r;
 619
 620     if (src)
 621     {
 622         WRBUF w = wrbuf_alloc();
 623         conf_dir_path(config, w, (const char *) src);
 624         r = nmem_strdup(nmem, wrbuf_cstr(w));
 625         wrbuf_destroy(w);
 626     }
 627     else
 628     {
 629         yaz_log(YLOG_FATAL, "Must specify src in targetprofile");
 630         return 0;
 631     }
 632     xmlFree(src);
 633     return r;
 634 }
 635
 636 static void inherit_server_settings(struct conf_service *s)
 637 {
 638     struct conf_server *server = s->server;
 639     if (!s->dictionary) /* service has no config settings ? */
 640     {
 641         if (server->server_settings)
 642         {
 643             /* inherit settings from server */
 644             init_settings(s);
 645             settings_read_file(s, server->server_settings, 1);
 646             settings_read_file(s, server->server_settings, 2);
 647         }
 648         else
 649         {
 650             yaz_log(YLOG_WARN, "service '%s' has no settings",
 651                     s->id ? s->id : "unnamed");
 652             init_settings(s);
 653         }
 654     }
 655
 656     /* use relevance/sort/mergekey/facet from server if not defined
 657        for this service.. */
 658     if (!s->relevance_pct)
 659     {
 660         if (server->relevance_pct)
 661         {
 662             s->relevance_pct = server->relevance_pct;
 663             pp2_charset_incref(s->relevance_pct);
 664         }
 665         else
 666             s->relevance_pct = pp2_charset_create_a_to_z();
 667     }
 668
 669     if (!s->sort_pct)
 670     {
 671         if (server->sort_pct)
 672         {
 673             s->sort_pct = server->sort_pct;
 674             pp2_charset_incref(s->sort_pct);
 675         }
 676         else
 677             s->sort_pct = pp2_charset_create_a_to_z();
 678     }
 679
 680     if (!s->mergekey_pct)
 681     {
 682         if (server->mergekey_pct)
 683         {
 684             s->mergekey_pct = server->mergekey_pct;
 685             pp2_charset_incref(s->mergekey_pct);
 686         }
 687         else
 688             s->mergekey_pct = pp2_charset_create_a_to_z();
 689     }
 690
 691     if (!s->facet_pct)
 692     {
 693         if (server->facet_pct)
 694         {
 695             s->facet_pct = server->facet_pct;
 696             pp2_charset_incref(s->facet_pct);
 697         }
 698         else
 699             s->facet_pct = pp2_charset_create(0);
 700     }
 701 }
 702
 703 struct conf_service *service_create(struct conf_server *server,
 704                                     xmlNode *node)
 705 {
 706     struct conf_service *service = service_create_static(server,
 707                                                          node, 0);
 708     if (service)
 709     {
 710         inherit_server_settings(service);
 711         resolve_databases(service);
 712         assert(service->mutex == 0);
 713         pazpar2_mutex_create(&service->mutex, "conf");
 714     }
 715     return service;
 716 }
 717
 718 static struct conf_server *server_create(struct conf_config *config,
 719                                          NMEM nmem, xmlNode *node)
 720 {
 721     xmlNode *n;
 722     struct conf_server *server = nmem_malloc(nmem, sizeof(struct conf_server));
 723     xmlChar *server_id = xmlGetProp(node, (xmlChar *) "id");
 724
 725     server->host = 0;
 726     server->port = 0;
 727     server->proxy_host = 0;
 728     server->proxy_port = 0;
 729     server->myurl = 0;
 730     server->service = 0;
 731     server->config = config;
 732     server->next = 0;
 733     server->relevance_pct = 0;
 734     server->sort_pct = 0;
 735     server->mergekey_pct = 0;
 736     server->facet_pct = 0;
 737     server->server_settings = 0;
 738     server->http_server = 0;
 739     server->iochan_man = 0;
 740     server->database_hosts = 0;
 741
 742     if (server_id)
 743     {
 744         server->server_id = nmem_strdup(nmem, (const char *)server_id);
 745         xmlFree(server_id);
 746     }
 747     else
 748         server->server_id = 0;
 749     for (n = node->children; n; n = n->next)
 750     {
 751         if (n->type != XML_ELEMENT_NODE)
 752             continue;
 753         if (!strcmp((const char *) n->name, "listen"))
 754         {
 755             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 756             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 757             if (port)
 758                 server->port = atoi((const char *) port);
 759             if (host)
 760                 server->host = nmem_strdup(nmem, (const char *) host);
 761             xmlFree(port);
 762             xmlFree(host);
 763         }
 764         else if (!strcmp((const char *) n->name, "proxy"))
 765         {
 766             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 767             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 768             xmlChar *myurl = xmlGetProp(n, (xmlChar *) "myurl");
 769             if (port)
 770                 server->proxy_port = atoi((const char *) port);
 771             if (host)
 772                 server->proxy_host = nmem_strdup(nmem, (const char *) host);
 773             if (myurl)
 774                 server->myurl = nmem_strdup(nmem, (const char *) myurl);
 775             xmlFree(port);
 776             xmlFree(host);
 777             xmlFree(myurl);
 778         }
 779         else if (!strcmp((const char *) n->name, "settings"))
 780         {
 781             if (server->server_settings)
 782             {
 783                 yaz_log(YLOG_FATAL, "Can't repeat 'settings'");
 784                 return 0;
 785             }
 786             if (!(server->server_settings = parse_settings(config, nmem, n)))
 787                 return 0;
 788         }
 789         else if (!strcmp((const char *) n->name, "relevance"))
 790         {
 791             server->relevance_pct = pp2_charset_create_xml(n);
 792             if (!server->relevance_pct)
 793                 return 0;
 794         }
 795         else if (!strcmp((const char *) n->name, "sort"))
 796         {
 797             server->sort_pct = pp2_charset_create_xml(n);
 798             if (!server->sort_pct)
 799                 return 0;
 800         }
 801         else if (!strcmp((const char *) n->name, "mergekey"))
 802         {
 803             server->mergekey_pct = pp2_charset_create_xml(n);
 804             if (!server->mergekey_pct)
 805                 return 0;
 806         }
 807         else if (!strcmp((const char *) n->name, "facet"))
 808         {
 809             server->facet_pct = pp2_charset_create_xml(n);
 810             if (!server->facet_pct)
 811                 return 0;
 812         }
 813         else if (!strcmp((const char *) n->name, "service"))
 814         {
 815             char *service_id = (char *)
 816                 xmlGetProp(n, (xmlChar *) "id");
 817
 818             struct conf_service **sp = &server->service;
 819             for (; *sp; sp = &(*sp)->next)
 820                 if ((*sp)->id && service_id &&
 821                     0 == strcmp((*sp)->id, service_id))
 822                 {
 823                     yaz_log(YLOG_FATAL, "Duplicate service: %s", service_id);
 824                     break;
 825                 }
 826                 else if (!(*sp)->id && !service_id)
 827                 {
 828                     yaz_log(YLOG_FATAL, "Duplicate unnamed service");
 829                     break;
 830                 }
 831
 832             if (*sp)  /* service already exist */
 833             {
 834                 xmlFree(service_id);
 835                 return 0;
 836             }
 837             else
 838             {
 839                 struct conf_service *s = service_create_static(server, n,
 840                                                                service_id);
 841                 xmlFree(service_id);
 842                 if (!s)
 843                     return 0;
 844                 *sp = s;
 845             }
 846         }
 847         else
 848         {
 849             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 850             return 0;
 851         }
 852     }
 853     if (server->service)
 854     {
 855         struct conf_service *s;
 856         for (s = server->service; s; s = s->next)
 857             inherit_server_settings(s);
 858     }
 859     return server;
 860 }
 861
 862 WRBUF conf_get_fname(struct conf_config *config, const char *fname)
 863 {
 864     WRBUF w = wrbuf_alloc();
 865
 866     conf_dir_path(config, w, fname);
 867     return w;
 868 }
 869
 870 struct conf_service *locate_service(struct conf_server *server,
 871                                     const char *service_id)
 872 {
 873     struct conf_service *s = server->service;
 874     for (; s; s = s->next)
 875         if (s->id && service_id && 0 == strcmp(s->id, service_id))
 876             break;
 877         else if (!s->id && !service_id)
 878             break;
 879     if (s)
 880         service_incref(s);
 881     return s;
 882 }
 883
 884 void info_services(struct conf_server *server, WRBUF w)
 885 {
 886     struct conf_service *s = server->service;
 887     wrbuf_puts(w, " <services>\n");
 888     for (; s; s = s->next)
 889     {
 890         wrbuf_puts(w, "  <service");
 891         if (s->id)
 892         {
 893             wrbuf_puts(w, " id=\"");
 894             wrbuf_xmlputs(w, s->id);
 895             wrbuf_puts(w, "\"");
 896         }
 897         wrbuf_puts(w, "/>");
 898
 899         wrbuf_puts(w, "\n");
 900     }
 901     wrbuf_puts(w, " </services>\n");
 902 }
 903
 904 static int parse_config(struct conf_config *config, xmlNode *root)
 905 {
 906     xmlNode *n;
 907
 908     for (n = root->children; n; n = n->next)
 909     {
 910         if (n->type != XML_ELEMENT_NODE)
 911             continue;
 912         if (!strcmp((const char *) n->name, "server"))
 913         {
 914             struct conf_server *tmp = server_create(config, config->nmem, n);
 915             if (!tmp)
 916                 return -1;
 917             tmp->next = config->servers;
 918             config->servers = tmp;
 919         }
 920         else if (!strcmp((const char *) n->name, "threads"))
 921         {
 922             xmlChar *number = xmlGetProp(n, (xmlChar *) "number");
 923             if (number)
 924             {
 925                 config->no_threads = atoi((const char *) number);
 926                 xmlFree(number);
 927             }
 928         }
 929         else if (!strcmp((const char *) n->name, "targetprofiles"))
 930         {
 931             yaz_log(YLOG_FATAL, "targetprofiles unsupported here. Must be part of service");
 932             return -1;
 933
 934         }
 935         else
 936         {
 937             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 938             return -1;
 939         }
 940     }
 941     return 0;
 942 }
 943
 944 struct conf_config *config_create(const char *fname, int verbose)
 945 {
 946     xmlDoc *doc = xmlParseFile(fname);
 947     xmlNode *n;
 948     const char *p;
 949     int r;
 950     NMEM nmem = nmem_create();
 951     struct conf_config *config = nmem_malloc(nmem, sizeof(struct conf_config));
 952
 953     xmlSubstituteEntitiesDefault(1);
 954     xmlLoadExtDtdDefaultValue = 1;
 955     if (!doc)
 956     {
 957         yaz_log(YLOG_FATAL, "Failed to read %s", fname);
 958         nmem_destroy(nmem);
 959         return 0;
 960     }
 961
 962     config->nmem = nmem;
 963     config->servers = 0;
 964     config->no_threads = 0;
 965     config->iochan_man = 0;
 966
 967     config->confdir = wrbuf_alloc();
 968     if ((p = strrchr(fname,
 969 #ifdef WIN32
 970                      '\\'
 971 #else
 972                      '/'
 973 #endif
 974              )))
 975     {
 976         int len = p - fname;
 977         wrbuf_write(config->confdir, fname, len);
 978     }
 979     wrbuf_puts(config->confdir, "");
 980
 981     n = xmlDocGetRootElement(doc);
 982     r = yaz_xml_include_simple(n, wrbuf_cstr(config->confdir));
 983     if (r == 0) /* OK */
 984     {
 985         if (verbose)
 986         {
 987             yaz_log(YLOG_LOG, "Configuration %s after include processing",
 988                     fname);
 989 #if LIBXML_VERSION >= 20600
 990             xmlDocFormatDump(yaz_log_file(), doc, 0);
 991 #else
 992             xmlDocDump(yaz_log_file(), doc);
 993 #endif
 994         }
 995         r = parse_config(config, n);
 996     }
 997     xmlFreeDoc(doc);
 998
 999     if (r)
1000     {
1001         config_destroy(config);
1002         return 0;
1003     }
1004     return config;
1005 }
1006
1007 void server_destroy(struct conf_server *server)
1008 {
1009     struct conf_service *s = server->service;
1010     while (s)
1011     {
1012         struct conf_service *s_next = s->next;
1013         service_destroy(s);
1014         s = s_next;
1015     }
1016     pp2_charset_destroy(server->relevance_pct);
1017     pp2_charset_destroy(server->sort_pct);
1018     pp2_charset_destroy(server->mergekey_pct);
1019     pp2_charset_destroy(server->facet_pct);
1020     yaz_log(YLOG_LOG, "server_destroy server=%p", server);
1021     http_server_destroy(server->http_server);
1022 }
1023
1024 void config_destroy(struct conf_config *config)
1025 {
1026     if (config)
1027     {
1028         struct conf_server *server = config->servers;
1029         iochan_man_destroy(&config->iochan_man);
1030         while (server)
1031         {
1032             struct conf_server *s_next = server->next;
1033             server_destroy(server);
1034             server = s_next;
1035         }
1036         database_hosts_destroy(&config->database_hosts);
1037
1038         wrbuf_destroy(config->confdir);
1039         nmem_destroy(config->nmem);
1040     }
1041 }
1042
1043 void config_stop_listeners(struct conf_config *conf)
1044 {
1045     struct conf_server *ser;
1046     for (ser = conf->servers; ser; ser = ser->next)
1047         http_close_server(ser);
1048 }
1049
1050 void config_process_events(struct conf_config *conf)
1051 {
1052     struct conf_server *ser;
1053
1054     conf->database_hosts = database_hosts_create();
1055     for (ser = conf->servers; ser; ser = ser->next)
1056     {
1057         struct conf_service *s = ser->service;
1058
1059         ser->database_hosts = conf->database_hosts;
1060
1061         for (;s ; s = s->next)
1062         {
1063             resolve_databases(s);
1064             assert(s->mutex == 0);
1065             pazpar2_mutex_create(&s->mutex, "service");
1066         }
1067         http_mutex_init(ser);
1068     }
1069     iochan_man_events(conf->iochan_man);
1070 }
1071
1072 int config_start_listeners(struct conf_config *conf,
1073                            const char *listener_override,
1074                            const char *record_fname)
1075 {
1076     struct conf_server *ser;
1077
1078     conf->iochan_man = iochan_man_create(conf->no_threads);
1079     for (ser = conf->servers; ser; ser = ser->next)
1080     {
1081         WRBUF w = wrbuf_alloc();
1082         int r;
1083
1084         ser->iochan_man = conf->iochan_man;
1085         if (listener_override)
1086         {
1087             wrbuf_puts(w, listener_override);
1088             listener_override = 0; /* only first server is overriden */
1089         }
1090         else
1091         {
1092             if (ser->host)
1093                 wrbuf_puts(w, ser->host);
1094             if (ser->port)
1095             {
1096                 if (wrbuf_len(w))
1097                     wrbuf_puts(w, ":");
1098                 wrbuf_printf(w, "%d", ser->port);
1099             }
1100         }
1101         r = http_init(wrbuf_cstr(w), ser, record_fname);
1102         wrbuf_destroy(w);
1103         if (r)
1104             return -1;
1105
1106         w = wrbuf_alloc();
1107         if (ser->proxy_host || ser->proxy_port)
1108         {
1109             if (ser->proxy_host)
1110                 wrbuf_puts(w, ser->proxy_host);
1111             if (ser->proxy_port)
1112             {
1113                 if (wrbuf_len(w))
1114                     wrbuf_puts(w, ":");
1115                 wrbuf_printf(w, "%d", ser->proxy_port);
1116             }
1117         }
1118         if (wrbuf_len(w))
1119             http_set_proxyaddr(wrbuf_cstr(w), ser);
1120         wrbuf_destroy(w);
1121     }
1122     return 0;
1123 }
1124
1125 /*
1126  * Local variables:
1127  * c-basic-offset: 4
1128  * c-file-style: "Stroustrup"
1129  * indent-tabs-mode: nil
1130  * End:
1131  * vim: shiftwidth=4 tabstop=8 expandtab
1132  */
1133