src/pazpar2_config.c

   1 /* This file is part of Pazpar2.
   2    Copyright (C) 2006-2010 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 struct conf_targetprofiles *parse_targetprofiles(NMEM nmem,
  64                                                         xmlNode *node);
  65
  66 static void conf_metadata_assign(NMEM nmem,
  67                                  struct conf_metadata * metadata,
  68                                  const char *name,
  69                                  enum conf_metadata_type type,
  70                                  enum conf_metadata_merge merge,
  71                                  enum conf_setting_type setting,
  72                                  int brief,
  73                                  int termlist,
  74                                  int rank,
  75                                  int sortkey_offset,
  76                                  enum conf_metadata_mergekey mt)
  77 {
  78     assert(nmem && metadata && name);
  79
  80     metadata->name = nmem_strdup(nmem, name);
  81
  82     metadata->type = type;
  83
  84     // enforcing that type_year is always range_merge
  85     if (metadata->type == Metadata_type_year)
  86         metadata->merge = Metadata_merge_range;
  87     else
  88         metadata->merge = merge;
  89
  90     metadata->setting = setting;
  91     metadata->brief = brief;
  92     metadata->termlist = termlist;
  93     metadata->rank = rank;
  94     metadata->sortkey_offset = sortkey_offset;
  95     metadata->mergekey = mt;
  96 }
  97
  98
  99 static void conf_sortkey_assign(NMEM nmem,
 100                                 struct conf_sortkey * sortkey,
 101                                 const char *name,
 102                                 enum conf_sortkey_type type)
 103 {
 104     assert(nmem && sortkey && name);
 105
 106     sortkey->name = nmem_strdup(nmem, name);
 107     sortkey->type = type;
 108 }
 109
 110
 111 static struct conf_service *service_init(struct conf_server *server,
 112                                          int num_metadata, int num_sortkeys,
 113                                          const char *service_id)
 114 {
 115     struct conf_service * service = 0;
 116     NMEM nmem = nmem_create();
 117
 118     service = nmem_malloc(nmem, sizeof(struct conf_service));
 119     service->mutex = 0;
 120     service->ref_count = 1;
 121     service->nmem = nmem;
 122     service->next = 0;
 123     service->settings = 0;
 124     service->databases = 0;
 125     service->targetprofiles = 0;
 126     service->server = server;
 127     service->session_timeout = 60; /* default session timeout */
 128     service->z3950_session_timeout = 180;
 129     service->z3950_operation_timeout = 30;
 130
 131     service->relevance_pct = 0;
 132     service->sort_pct = 0;
 133     service->mergekey_pct = 0;
 134     service->facet_pct = 0;
 135
 136     service->id = service_id ? nmem_strdup(nmem, service_id) : 0;
 137     service->num_metadata = num_metadata;
 138     service->metadata = 0;
 139     if (service->num_metadata)
 140       service->metadata
 141           = nmem_malloc(nmem,
 142                         sizeof(struct conf_metadata) * service->num_metadata);
 143     service->num_sortkeys = num_sortkeys;
 144     service->sortkeys = 0;
 145     if (service->num_sortkeys)
 146         service->sortkeys
 147             = nmem_malloc(nmem,
 148                           sizeof(struct conf_sortkey) * service->num_sortkeys);
 149     service->dictionary = 0;
 150     return service;
 151 }
 152
 153 static struct conf_metadata* conf_service_add_metadata(
 154     struct conf_service *service,
 155     int field_id,
 156     const char *name,
 157     enum conf_metadata_type type,
 158     enum conf_metadata_merge merge,
 159     enum conf_setting_type setting,
 160     int brief,
 161     int termlist,
 162     int rank,
 163     int sortkey_offset,
 164     enum conf_metadata_mergekey mt)
 165 {
 166     struct conf_metadata * md = 0;
 167
 168     if (!service || !service->metadata || !service->num_metadata
 169         || field_id < 0  || !(field_id < service->num_metadata))
 170         return 0;
 171
 172     md = service->metadata + field_id;
 173     conf_metadata_assign(service->nmem, md, name, type, merge, setting,
 174                          brief, termlist, rank, sortkey_offset,
 175                          mt);
 176     return md;
 177 }
 178
 179
 180 static struct conf_sortkey * conf_service_add_sortkey(
 181     struct conf_service *service,
 182     int field_id,
 183     const char *name,
 184     enum conf_sortkey_type type)
 185 {
 186     struct conf_sortkey * sk = 0;
 187
 188     if (!service || !service->sortkeys || !service->num_sortkeys
 189         || field_id < 0  || !(field_id < service->num_sortkeys))
 190         return 0;
 191
 192     //sk = &((service->sortkeys)[field_id]);
 193     sk = service->sortkeys + field_id;
 194     conf_sortkey_assign(service->nmem, sk, name, type);
 195
 196     return sk;
 197 }
 198
 199
 200 int conf_service_metadata_field_id(struct conf_service *service,
 201                                    const char * name)
 202 {
 203     int i = 0;
 204
 205     if (!service || !service->metadata || !service->num_metadata)
 206         return -1;
 207
 208     for(i = 0; i < service->num_metadata; i++) {
 209         if (!strcmp(name, (service->metadata[i]).name))
 210             return i;
 211     }
 212
 213     return -1;
 214 }
 215
 216
 217 int conf_service_sortkey_field_id(struct conf_service *service,
 218                                   const char * name)
 219 {
 220     int i = 0;
 221
 222     if (!service || !service->sortkeys || !service->num_sortkeys)
 223         return -1;
 224
 225     for(i = 0; i < service->num_sortkeys; i++) {
 226         if (!strcmp(name, (service->sortkeys[i]).name))
 227             return i;
 228     }
 229
 230     return -1;
 231 }
 232
 233 static void conf_dir_path(struct conf_config *config, WRBUF w, const char *src)
 234 {
 235     if (config->confdir && wrbuf_len(config->confdir) > 0 &&
 236         !yaz_is_abspath(src))
 237     {
 238         wrbuf_printf(w, "%s/%s", wrbuf_cstr(config->confdir), src);
 239     }
 240     else
 241         wrbuf_puts(w, src);
 242 }
 243
 244 void service_destroy(struct conf_service *service)
 245 {
 246     if (service)
 247     {
 248         if (!pazpar2_decref(&service->ref_count, service->mutex))
 249         {
 250             pp2_charset_destroy(service->relevance_pct);
 251             pp2_charset_destroy(service->sort_pct);
 252             pp2_charset_destroy(service->mergekey_pct);
 253             pp2_charset_destroy(service->facet_pct);
 254             yaz_mutex_destroy(&service->mutex);
 255             nmem_destroy(service->nmem);
 256         }
 257     }
 258 }
 259
 260 void service_incref(struct conf_service *service)
 261 {
 262     yaz_log(YLOG_LOG, "service_incref. p=%p cnt=%d", service,
 263             service->ref_count);
 264     pazpar2_incref(&service->ref_count, service->mutex);
 265 }
 266
 267 static int parse_metadata(struct conf_service *service, xmlNode *n,
 268                           int *md_node, int *sk_node)
 269 {
 270     xmlChar *xml_name = xmlGetProp(n, (xmlChar *) "name");
 271     xmlChar *xml_brief = xmlGetProp(n, (xmlChar *) "brief");
 272     xmlChar *xml_sortkey = xmlGetProp(n, (xmlChar *) "sortkey");
 273     xmlChar *xml_merge = xmlGetProp(n, (xmlChar *) "merge");
 274     xmlChar *xml_type = xmlGetProp(n, (xmlChar *) "type");
 275     xmlChar *xml_termlist = xmlGetProp(n, (xmlChar *) "termlist");
 276     xmlChar *xml_rank = xmlGetProp(n, (xmlChar *) "rank");
 277     xmlChar *xml_setting = xmlGetProp(n, (xmlChar *) "setting");
 278     xmlChar *xml_mergekey = xmlGetProp(n, (xmlChar *) "mergekey");
 279
 280     enum conf_metadata_type type = Metadata_type_generic;
 281     enum conf_metadata_merge merge = Metadata_merge_no;
 282     enum conf_setting_type setting = Metadata_setting_no;
 283     enum conf_sortkey_type sk_type = Metadata_sortkey_relevance;
 284     enum conf_metadata_mergekey mergekey_type = Metadata_mergekey_no;
 285     int brief = 0;
 286     int termlist = 0;
 287     int rank = 0;
 288     int sortkey_offset = 0;
 289
 290     // now do the parsing logic
 291     if (!xml_name)
 292     {
 293         yaz_log(YLOG_FATAL, "Must specify name in metadata element");
 294         return -1;
 295     }
 296     if (xml_brief)
 297     {
 298         if (!strcmp((const char *) xml_brief, "yes"))
 299             brief = 1;
 300         else if (strcmp((const char *) xml_brief, "no"))
 301         {
 302             yaz_log(YLOG_FATAL, "metadata/brief must be yes or no");
 303             return -1;
 304         }
 305     }
 306     else
 307         brief = 0;
 308
 309     if (xml_termlist)
 310     {
 311         if (!strcmp((const char *) xml_termlist, "yes"))
 312             termlist = 1;
 313         else if (strcmp((const char *) xml_termlist, "no"))
 314         {
 315             yaz_log(YLOG_FATAL, "metadata/termlist must be yes or no");
 316             return -1;
 317         }
 318     }
 319     else
 320         termlist = 0;
 321
 322     if (xml_rank)
 323         rank = atoi((const char *) xml_rank);
 324     else
 325         rank = 0;
 326
 327     if (xml_type)
 328     {
 329         if (!strcmp((const char *) xml_type, "generic"))
 330             type = Metadata_type_generic;
 331         else if (!strcmp((const char *) xml_type, "year"))
 332             type = Metadata_type_year;
 333         else if (!strcmp((const char *) xml_type, "date"))
 334             type = Metadata_type_date;
 335         else
 336         {
 337             yaz_log(YLOG_FATAL,
 338                     "Unknown value for metadata/type: %s", xml_type);
 339             return -1;
 340         }
 341     }
 342     else
 343         type = Metadata_type_generic;
 344
 345     if (xml_merge)
 346     {
 347         if (!strcmp((const char *) xml_merge, "no"))
 348             merge = Metadata_merge_no;
 349         else if (!strcmp((const char *) xml_merge, "unique"))
 350             merge = Metadata_merge_unique;
 351         else if (!strcmp((const char *) xml_merge, "longest"))
 352             merge = Metadata_merge_longest;
 353         else if (!strcmp((const char *) xml_merge, "range"))
 354             merge = Metadata_merge_range;
 355         else if (!strcmp((const char *) xml_merge, "all"))
 356             merge = Metadata_merge_all;
 357         else
 358         {
 359             yaz_log(YLOG_FATAL,
 360                     "Unknown value for metadata/merge: %s", xml_merge);
 361             return -1;
 362         }
 363     }
 364     else
 365         merge = Metadata_merge_no;
 366
 367     if (xml_setting)
 368     {
 369         if (!strcmp((const char *) xml_setting, "no"))
 370             setting = Metadata_setting_no;
 371         else if (!strcmp((const char *) xml_setting, "postproc"))
 372             setting = Metadata_setting_postproc;
 373         else if (!strcmp((const char *) xml_setting, "parameter"))
 374             setting = Metadata_setting_parameter;
 375         else
 376         {
 377             yaz_log(YLOG_FATAL,
 378                     "Unknown value for medadata/setting: %s", xml_setting);
 379             return -1;
 380         }
 381     }
 382
 383     // add a sortkey if so specified
 384     if (xml_sortkey && strcmp((const char *) xml_sortkey, "no"))
 385     {
 386         if (merge == Metadata_merge_no)
 387         {
 388             yaz_log(YLOG_FATAL,
 389                     "Can't specify sortkey on a non-merged field");
 390             return -1;
 391         }
 392         if (!strcmp((const char *) xml_sortkey, "numeric"))
 393             sk_type = Metadata_sortkey_numeric;
 394         else if (!strcmp((const char *) xml_sortkey, "skiparticle"))
 395             sk_type = Metadata_sortkey_skiparticle;
 396         else
 397         {
 398             yaz_log(YLOG_FATAL,
 399                     "Unknown sortkey in metadata element: %s",
 400                     xml_sortkey);
 401             return -1;
 402         }
 403         sortkey_offset = *sk_node;
 404
 405         conf_service_add_sortkey(service, *sk_node,
 406                                  (const char *) xml_name, sk_type);
 407
 408         (*sk_node)++;
 409     }
 410     else
 411         sortkey_offset = -1;
 412
 413     if (xml_mergekey)
 414     {
 415         if (!strcmp((const char *) xml_mergekey, "required"))
 416             mergekey_type = Metadata_mergekey_required;
 417         else if (!strcmp((const char *) xml_mergekey, "optional"))
 418             mergekey_type = Metadata_mergekey_optional;
 419         else if (!strcmp((const char *) xml_mergekey, "no"))
 420             mergekey_type = Metadata_mergekey_no;
 421         else
 422         {
 423             yaz_log(YLOG_FATAL, "Unknown value for mergekey: %s", xml_mergekey);
 424             return -1;
 425         }
 426     }
 427
 428
 429     // metadata known, assign values
 430     conf_service_add_metadata(service, *md_node,
 431                               (const char *) xml_name,
 432                               type, merge, setting,
 433                               brief, termlist, rank, sortkey_offset,
 434                               mergekey_type);
 435
 436     xmlFree(xml_name);
 437     xmlFree(xml_brief);
 438     xmlFree(xml_sortkey);
 439     xmlFree(xml_merge);
 440     xmlFree(xml_type);
 441     xmlFree(xml_termlist);
 442     xmlFree(xml_rank);
 443     xmlFree(xml_setting);
 444     xmlFree(xml_mergekey);
 445     (*md_node)++;
 446     return 0;
 447 }
 448
 449 static struct conf_service *service_create_static(struct conf_server *server,
 450                                                   xmlNode *node,
 451                                                   const char *service_id)
 452 {
 453     xmlNode *n;
 454     int md_node = 0;
 455     int sk_node = 0;
 456
 457     struct conf_service *service = 0;
 458     int num_metadata = 0;
 459     int num_sortkeys = 0;
 460     int got_settings = 0;
 461
 462     // count num_metadata and num_sortkeys
 463     for (n = node->children; n; n = n->next)
 464         if (n->type == XML_ELEMENT_NODE && !strcmp((const char *)
 465                                                    n->name, "metadata"))
 466         {
 467             xmlChar *sortkey = xmlGetProp(n, (xmlChar *) "sortkey");
 468             num_metadata++;
 469             if (sortkey && strcmp((const char *) sortkey, "no"))
 470                 num_sortkeys++;
 471             xmlFree(sortkey);
 472         }
 473
 474     service = service_init(server, num_metadata, num_sortkeys, service_id);
 475
 476     for (n = node->children; n; n = n->next)
 477     {
 478         if (n->type != XML_ELEMENT_NODE)
 479             continue;
 480         if (!strcmp((const char *) n->name, "timeout"))
 481         {
 482             xmlChar *src = xmlGetProp(n, (xmlChar *) "session");
 483             if (src)
 484             {
 485                 service->session_timeout = atoi((const char *) src);
 486                 xmlFree(src);
 487                 if (service->session_timeout < 9)
 488                 {
 489                     yaz_log(YLOG_FATAL, "session timeout out of range");
 490                     return 0;
 491                 }
 492             }
 493             src = xmlGetProp(n, (xmlChar *) "z3950_operation");
 494             if (src)
 495             {
 496                 service->z3950_operation_timeout = atoi((const char *) src);
 497                 xmlFree(src);
 498                 if (service->z3950_session_timeout < 9)
 499                 {
 500                     yaz_log(YLOG_FATAL, "Z39.50 operation timeout out of range");
 501                     return 0;
 502                 }
 503             }
 504             src = xmlGetProp(n, (xmlChar *) "z3950_session");
 505             if (src)
 506             {
 507                 service->z3950_session_timeout = atoi((const char *) src);
 508                 xmlFree(src);
 509                 if (service->z3950_session_timeout < 9)
 510                 {
 511                     yaz_log(YLOG_FATAL, "Z39.50 session timeout out of range");
 512                     return 0;
 513                 }
 514             }
 515         }
 516         else if (!strcmp((const char *) n->name, "settings"))
 517             got_settings++;
 518         else if (!strcmp((const char *) n->name, (const char *) "targetprofiles"))
 519         {
 520             if (service->targetprofiles)
 521             {
 522                 yaz_log(YLOG_FATAL, "Can't repeat targetprofiles");
 523                 return 0;
 524             }
 525             if (!(service->targetprofiles =
 526                   parse_targetprofiles(service->nmem, n)))
 527                 return 0;
 528         }
 529         else if (!strcmp((const char *) n->name, "relevance"))
 530         {
 531             if (service->relevance_pct)
 532             {
 533                 yaz_log(YLOG_LOG, "relevance may not repeat in service");
 534                 return 0;
 535             }
 536             else
 537             {
 538                 service->relevance_pct = pp2_charset_create_xml(n);
 539                 if (!service->relevance_pct)
 540                     return 0;
 541             }
 542         }
 543         else if (!strcmp((const char *) n->name, "sort"))
 544         {
 545             if (service->sort_pct)
 546             {
 547                 yaz_log(YLOG_LOG, "sort may not repeat in service");
 548                 return 0;
 549             }
 550             else
 551             {
 552                 service->sort_pct = pp2_charset_create_xml(n);
 553                 if (!service->sort_pct)
 554                     return 0;
 555             }
 556         }
 557         else if (!strcmp((const char *) n->name, "mergekey"))
 558         {
 559             if (service->mergekey_pct)
 560             {
 561                 yaz_log(YLOG_LOG, "mergekey may not repeat in service");
 562                 return 0;
 563             }
 564             else
 565             {
 566                 service->mergekey_pct = pp2_charset_create_xml(n);
 567                 if (!service->mergekey_pct)
 568                     return 0;
 569             }
 570         }
 571         else if (!strcmp((const char *) n->name, "facet"))
 572         {
 573             if (service->mergekey_pct)
 574             {
 575                 yaz_log(YLOG_LOG, "facety may not repeat in service");
 576                 return 0;
 577             }
 578             else
 579             {
 580                 service->facet_pct = pp2_charset_create_xml(n);
 581                 if (!service->mergekey_pct)
 582                     return 0;
 583             }
 584         }
 585         else if (!strcmp((const char *) n->name, (const char *) "metadata"))
 586         {
 587             if (parse_metadata(service, n, &md_node, &sk_node))
 588                 return 0;
 589         }
 590         else
 591         {
 592             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 593             return 0;
 594         }
 595     }
 596     if (got_settings)
 597     {
 598         int pass;
 599         /* metadata has been read.. Consider now settings */
 600         init_settings(service);
 601         for (pass = 1; pass <= 2; pass++)
 602         {
 603             for (n = node->children; n; n = n->next)
 604             {
 605                 if (n->type != XML_ELEMENT_NODE)
 606                     continue;
 607                 if (!strcmp((const char *) n->name, "settings"))
 608                 {
 609                     xmlChar *src = xmlGetProp(n, (xmlChar *) "src");
 610                     if (src)
 611                     {
 612                         WRBUF w = wrbuf_alloc();
 613                         conf_dir_path(server->config, w, (const char *) src);
 614                         settings_read_file(service, wrbuf_cstr(w), pass);
 615                         wrbuf_destroy(w);
 616                         xmlFree(src);
 617                     }
 618                     else
 619                     {
 620                         settings_read_node(service, n, pass);
 621                     }
 622                 }
 623             }
 624         }
 625     }
 626     return service;
 627 }
 628
 629 static char *parse_settings(struct conf_config *config,
 630                             NMEM nmem, xmlNode *node)
 631 {
 632     xmlChar *src = xmlGetProp(node, (xmlChar *) "src");
 633     char *r;
 634
 635     if (src)
 636     {
 637         WRBUF w = wrbuf_alloc();
 638         conf_dir_path(config, w, (const char *) src);
 639         r = nmem_strdup(nmem, wrbuf_cstr(w));
 640         wrbuf_destroy(w);
 641     }
 642     else
 643     {
 644         yaz_log(YLOG_FATAL, "Must specify src in targetprofile");
 645         return 0;
 646     }
 647     xmlFree(src);
 648     return r;
 649 }
 650
 651 static void inherit_server_settings(struct conf_service *s)
 652 {
 653     struct conf_server *server = s->server;
 654     if (!s->dictionary) /* service has no config settings ? */
 655     {
 656         if (server->server_settings)
 657         {
 658             /* inherit settings from server */
 659             init_settings(s);
 660             settings_read_file(s, server->server_settings, 1);
 661             settings_read_file(s, server->server_settings, 2);
 662         }
 663         else
 664         {
 665             yaz_log(YLOG_WARN, "service '%s' has no settings",
 666                     s->id ? s->id : "unnamed");
 667             init_settings(s);
 668         }
 669     }
 670
 671     /* use relevance/sort/mergekey/facet from server if not defined
 672        for this service.. */
 673     if (!s->relevance_pct)
 674     {
 675         if (server->relevance_pct)
 676         {
 677             s->relevance_pct = server->relevance_pct;
 678             pp2_charset_incref(s->relevance_pct);
 679         }
 680         else
 681             s->relevance_pct = pp2_charset_create(0);
 682     }
 683
 684     if (!s->sort_pct)
 685     {
 686         if (server->sort_pct)
 687         {
 688             s->sort_pct = server->sort_pct;
 689             pp2_charset_incref(s->sort_pct);
 690         }
 691         else
 692             s->sort_pct = pp2_charset_create(0);
 693     }
 694
 695     if (!s->mergekey_pct)
 696     {
 697         if (server->mergekey_pct)
 698         {
 699             s->mergekey_pct = server->mergekey_pct;
 700             pp2_charset_incref(s->mergekey_pct);
 701         }
 702         else
 703             s->mergekey_pct = pp2_charset_create(0);
 704     }
 705
 706     if (!s->facet_pct)
 707     {
 708         if (server->facet_pct)
 709         {
 710             s->facet_pct = server->facet_pct;
 711             pp2_charset_incref(s->facet_pct);
 712         }
 713         else
 714             s->facet_pct = pp2_charset_create(0);
 715     }
 716 }
 717
 718 struct conf_service *service_create(struct conf_server *server,
 719                                     xmlNode *node)
 720 {
 721     struct conf_service *service = service_create_static(server,
 722                                                          node, 0);
 723     if (service)
 724     {
 725         inherit_server_settings(service);
 726         resolve_databases(service);
 727         assert(service->mutex == 0);
 728         pazpar2_mutex_create(&service->mutex, "conf");
 729     }
 730     return service;
 731 }
 732
 733 static struct conf_server *server_create(struct conf_config *config,
 734                                          NMEM nmem, xmlNode *node)
 735 {
 736     xmlNode *n;
 737     struct conf_server *server = nmem_malloc(nmem, sizeof(struct conf_server));
 738     xmlChar *server_id = xmlGetProp(node, (xmlChar *) "id");
 739
 740     server->host = 0;
 741     server->port = 0;
 742     server->proxy_host = 0;
 743     server->proxy_port = 0;
 744     server->myurl = 0;
 745     server->service = 0;
 746     server->config = config;
 747     server->next = 0;
 748     server->relevance_pct = 0;
 749     server->sort_pct = 0;
 750     server->mergekey_pct = 0;
 751     server->facet_pct = 0;
 752     server->server_settings = 0;
 753     server->http_server = 0;
 754     server->iochan_man = 0;
 755     server->database_hosts = 0;
 756
 757     if (server_id)
 758     {
 759         server->server_id = nmem_strdup(nmem, (const char *)server_id);
 760         xmlFree(server_id);
 761     }
 762     else
 763         server->server_id = 0;
 764     for (n = node->children; n; n = n->next)
 765     {
 766         if (n->type != XML_ELEMENT_NODE)
 767             continue;
 768         if (!strcmp((const char *) n->name, "listen"))
 769         {
 770             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 771             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 772             if (port)
 773                 server->port = atoi((const char *) port);
 774             if (host)
 775                 server->host = nmem_strdup(nmem, (const char *) host);
 776             xmlFree(port);
 777             xmlFree(host);
 778         }
 779         else if (!strcmp((const char *) n->name, "proxy"))
 780         {
 781             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 782             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 783             xmlChar *myurl = xmlGetProp(n, (xmlChar *) "myurl");
 784             if (port)
 785                 server->proxy_port = atoi((const char *) port);
 786             if (host)
 787                 server->proxy_host = nmem_strdup(nmem, (const char *) host);
 788             if (myurl)
 789                 server->myurl = nmem_strdup(nmem, (const char *) myurl);
 790             xmlFree(port);
 791             xmlFree(host);
 792             xmlFree(myurl);
 793         }
 794         else if (!strcmp((const char *) n->name, "settings"))
 795         {
 796             if (server->server_settings)
 797             {
 798                 yaz_log(YLOG_FATAL, "Can't repeat 'settings'");
 799                 return 0;
 800             }
 801             if (!(server->server_settings = parse_settings(config, nmem, n)))
 802                 return 0;
 803         }
 804         else if (!strcmp((const char *) n->name, "relevance"))
 805         {
 806             server->relevance_pct = pp2_charset_create_xml(n);
 807             if (!server->relevance_pct)
 808                 return 0;
 809         }
 810         else if (!strcmp((const char *) n->name, "sort"))
 811         {
 812             server->sort_pct = pp2_charset_create_xml(n);
 813             if (!server->sort_pct)
 814                 return 0;
 815         }
 816         else if (!strcmp((const char *) n->name, "mergekey"))
 817         {
 818             server->mergekey_pct = pp2_charset_create_xml(n);
 819             if (!server->mergekey_pct)
 820                 return 0;
 821         }
 822         else if (!strcmp((const char *) n->name, "facet"))
 823         {
 824             server->facet_pct = pp2_charset_create_xml(n);
 825             if (!server->facet_pct)
 826                 return 0;
 827         }
 828         else if (!strcmp((const char *) n->name, "service"))
 829         {
 830             char *service_id = (char *)
 831                 xmlGetProp(n, (xmlChar *) "id");
 832
 833             struct conf_service **sp = &server->service;
 834             for (; *sp; sp = &(*sp)->next)
 835                 if ((*sp)->id && service_id &&
 836                     0 == strcmp((*sp)->id, service_id))
 837                 {
 838                     yaz_log(YLOG_FATAL, "Duplicate service: %s", service_id);
 839                     break;
 840                 }
 841                 else if (!(*sp)->id && !service_id)
 842                 {
 843                     yaz_log(YLOG_FATAL, "Duplicate unnamed service");
 844                     break;
 845                 }
 846
 847             if (*sp)  /* service already exist */
 848             {
 849                 xmlFree(service_id);
 850                 return 0;
 851             }
 852             else
 853             {
 854                 struct conf_service *s = service_create_static(server, n,
 855                                                                service_id);
 856                 xmlFree(service_id);
 857                 if (!s)
 858                     return 0;
 859                 *sp = s;
 860             }
 861         }
 862         else
 863         {
 864             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 865             return 0;
 866         }
 867     }
 868     if (server->service)
 869     {
 870         struct conf_service *s;
 871         for (s = server->service; s; s = s->next)
 872             inherit_server_settings(s);
 873     }
 874     return server;
 875 }
 876
 877 WRBUF conf_get_fname(struct conf_config *config, const char *fname)
 878 {
 879     WRBUF w = wrbuf_alloc();
 880
 881     conf_dir_path(config, w, fname);
 882     return w;
 883 }
 884
 885 static struct conf_targetprofiles *parse_targetprofiles(NMEM nmem,
 886                                                         xmlNode *node)
 887 {
 888     struct conf_targetprofiles *r = nmem_malloc(nmem, sizeof(*r));
 889     xmlChar *type = xmlGetProp(node, (xmlChar *) "type");
 890     xmlChar *src = xmlGetProp(node, (xmlChar *) "src");
 891
 892     memset(r, 0, sizeof(*r));
 893
 894     if (type)
 895     {
 896         if (!strcmp((const char *) type, "local"))
 897             r->type = Targetprofiles_local;
 898         else
 899         {
 900             yaz_log(YLOG_FATAL, "Unknown targetprofile type");
 901             return 0;
 902         }
 903     }
 904     else
 905     {
 906         yaz_log(YLOG_FATAL, "Must specify type for targetprofile");
 907         return 0;
 908     }
 909
 910     if (src)
 911         r->src = nmem_strdup(nmem, (const char *) src);
 912     else
 913     {
 914         yaz_log(YLOG_FATAL, "Must specify src in targetprofile");
 915         return 0;
 916     }
 917     xmlFree(type);
 918     xmlFree(src);
 919     return r;
 920 }
 921
 922 struct conf_service *locate_service(struct conf_server *server,
 923                                     const char *service_id)
 924 {
 925     struct conf_service *s = server->service;
 926     for (; s; s = s->next)
 927         if (s->id && service_id && 0 == strcmp(s->id, service_id))
 928             break;
 929         else if (!s->id && !service_id)
 930             break;
 931     if (s)
 932         service_incref(s);
 933     return s;
 934 }
 935
 936
 937 static int parse_config(struct conf_config *config, xmlNode *root)
 938 {
 939     xmlNode *n;
 940
 941     for (n = root->children; n; n = n->next)
 942     {
 943         if (n->type != XML_ELEMENT_NODE)
 944             continue;
 945         if (!strcmp((const char *) n->name, "server"))
 946         {
 947             struct conf_server *tmp = server_create(config, config->nmem, n);
 948             if (!tmp)
 949                 return -1;
 950             tmp->next = config->servers;
 951             config->servers = tmp;
 952         }
 953         else if (!strcmp((const char *) n->name, "threads"))
 954         {
 955             xmlChar *number = xmlGetProp(n, (xmlChar *) "number");
 956             if (number)
 957             {
 958                 config->no_threads = atoi((const char *) number);
 959                 xmlFree(number);
 960             }
 961         }
 962         else if (!strcmp((const char *) n->name, "targetprofiles"))
 963         {
 964             yaz_log(YLOG_FATAL, "targetprofiles unsupported here. Must be part of service");
 965             return -1;
 966
 967         }
 968         else
 969         {
 970             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 971             return -1;
 972         }
 973     }
 974     return 0;
 975 }
 976
 977 struct conf_config *config_create(const char *fname, int verbose)
 978 {
 979     xmlDoc *doc = xmlParseFile(fname);
 980     xmlNode *n;
 981     const char *p;
 982     int r;
 983     NMEM nmem = nmem_create();
 984     struct conf_config *config = nmem_malloc(nmem, sizeof(struct conf_config));
 985
 986     xmlSubstituteEntitiesDefault(1);
 987     xmlLoadExtDtdDefaultValue = 1;
 988     if (!doc)
 989     {
 990         yaz_log(YLOG_FATAL, "Failed to read %s", fname);
 991         nmem_destroy(nmem);
 992         return 0;
 993     }
 994
 995     config->nmem = nmem;
 996     config->servers = 0;
 997     config->no_threads = 0;
 998     config->iochan_man = 0;
 999
1000     config->confdir = wrbuf_alloc();
1001     if ((p = strrchr(fname,
1002 #ifdef WIN32
1003                      '\\'
1004 #else
1005                      '/'
1006 #endif
1007              )))
1008     {
1009         int len = p - fname;
1010         wrbuf_write(config->confdir, fname, len);
1011     }
1012     wrbuf_puts(config->confdir, "");
1013
1014     n = xmlDocGetRootElement(doc);
1015     r = yaz_xml_include_simple(n, wrbuf_cstr(config->confdir));
1016     if (r == 0) /* OK */
1017     {
1018         if (verbose)
1019         {
1020             yaz_log(YLOG_LOG, "Configuration %s after include processing",
1021                     fname);
1022 #if LIBXML_VERSION >= 20600
1023             xmlDocFormatDump(yaz_log_file(), doc, 0);
1024 #else
1025             xmlDocDump(yaz_log_file(), doc);
1026 #endif
1027         }
1028         r = parse_config(config, n);
1029     }
1030     xmlFreeDoc(doc);
1031
1032     if (r)
1033     {
1034         config_destroy(config);
1035         return 0;
1036     }
1037     return config;
1038 }
1039
1040 void server_destroy(struct conf_server *server)
1041 {
1042     struct conf_service *s = server->service;
1043     while (s)
1044     {
1045         struct conf_service *s_next = s->next;
1046         service_destroy(s);
1047         s = s_next;
1048     }
1049     pp2_charset_destroy(server->relevance_pct);
1050     pp2_charset_destroy(server->sort_pct);
1051     pp2_charset_destroy(server->mergekey_pct);
1052     pp2_charset_destroy(server->facet_pct);
1053     yaz_log(YLOG_LOG, "server_destroy server=%p", server);
1054     http_server_destroy(server->http_server);
1055 }
1056
1057 void config_destroy(struct conf_config *config)
1058 {
1059     if (config)
1060     {
1061         struct conf_server *server = config->servers;
1062         iochan_man_destroy(&config->iochan_man);
1063         while (server)
1064         {
1065             struct conf_server *s_next = server->next;
1066             server_destroy(server);
1067             server = s_next;
1068         }
1069         database_hosts_destroy(&config->database_hosts);
1070
1071         wrbuf_destroy(config->confdir);
1072         nmem_destroy(config->nmem);
1073     }
1074 }
1075
1076 void config_stop_listeners(struct conf_config *conf)
1077 {
1078     struct conf_server *ser;
1079     for (ser = conf->servers; ser; ser = ser->next)
1080         http_close_server(ser);
1081 }
1082
1083 void config_process_events(struct conf_config *conf)
1084 {
1085     struct conf_server *ser;
1086
1087     conf->database_hosts = database_hosts_create();
1088     for (ser = conf->servers; ser; ser = ser->next)
1089     {
1090         struct conf_service *s = ser->service;
1091
1092         ser->database_hosts = conf->database_hosts;
1093
1094         for (;s ; s = s->next)
1095         {
1096             resolve_databases(s);
1097             assert(s->mutex == 0);
1098             pazpar2_mutex_create(&s->mutex, "service");
1099         }
1100         http_mutex_init(ser);
1101     }
1102     iochan_man_events(conf->iochan_man);
1103 }
1104
1105 int config_start_listeners(struct conf_config *conf,
1106                            const char *listener_override)
1107 {
1108     struct conf_server *ser;
1109
1110     conf->iochan_man = iochan_man_create(conf->no_threads);
1111     for (ser = conf->servers; ser; ser = ser->next)
1112     {
1113         WRBUF w = wrbuf_alloc();
1114         int r;
1115
1116         ser->iochan_man = conf->iochan_man;
1117         if (listener_override)
1118         {
1119             wrbuf_puts(w, listener_override);
1120             listener_override = 0; /* only first server is overriden */
1121         }
1122         else
1123         {
1124             if (ser->host)
1125                 wrbuf_puts(w, ser->host);
1126             if (ser->port)
1127             {
1128                 if (wrbuf_len(w))
1129                     wrbuf_puts(w, ":");
1130                 wrbuf_printf(w, "%d", ser->port);
1131             }
1132         }
1133         r = http_init(wrbuf_cstr(w), ser);
1134         wrbuf_destroy(w);
1135         if (r)
1136             return -1;
1137
1138         w = wrbuf_alloc();
1139         if (ser->proxy_host || ser->proxy_port)
1140         {
1141             if (ser->proxy_host)
1142                 wrbuf_puts(w, ser->proxy_host);
1143             if (ser->proxy_port)
1144             {
1145                 if (wrbuf_len(w))
1146                     wrbuf_puts(w, ":");
1147                 wrbuf_printf(w, "%d", ser->proxy_port);
1148             }
1149         }
1150         if (wrbuf_len(w))
1151             http_set_proxyaddr(wrbuf_cstr(w), ser);
1152         wrbuf_destroy(w);
1153     }
1154     return 0;
1155 }
1156
1157 /*
1158  * Local variables:
1159  * c-basic-offset: 4
1160  * c-file-style: "Stroustrup"
1161  * indent-tabs-mode: nil
1162  * End:
1163  * vim: shiftwidth=4 tabstop=8 expandtab
1164  */
1165