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     enum conf_metadata_type type = Metadata_type_generic;
 267     enum conf_metadata_merge merge = Metadata_merge_no;
 268     enum conf_setting_type setting = Metadata_setting_no;
 269     enum conf_sortkey_type sk_type = Metadata_sortkey_relevance;
 270     enum conf_metadata_mergekey mergekey_type = Metadata_mergekey_no;
 271     int brief = 0;
 272     int termlist = 0;
 273     int rank = 0;
 274     int sortkey_offset = 0;
 275     xmlChar *xml_name = 0;
 276     xmlChar *xml_brief = 0;
 277     xmlChar *xml_sortkey = 0;
 278     xmlChar *xml_merge = 0;
 279     xmlChar *xml_type = 0;
 280     xmlChar *xml_termlist = 0;
 281     xmlChar *xml_rank = 0;
 282     xmlChar *xml_setting = 0;
 283     xmlChar *xml_mergekey = 0;
 284     struct _xmlAttr *attr;
 285     for (attr = n->properties; attr; attr = attr->next)
 286     {
 287         if (!xmlStrcmp(attr->name, BAD_CAST "name") &&
 288             attr->children && attr->children->type == XML_TEXT_NODE)
 289             xml_name = attr->children->content;
 290         else if (!xmlStrcmp(attr->name, BAD_CAST "brief") &&
 291                  attr->children && attr->children->type == XML_TEXT_NODE)
 292             xml_brief = attr->children->content;
 293         else if (!xmlStrcmp(attr->name, BAD_CAST "sortkey") &&
 294                  attr->children && attr->children->type == XML_TEXT_NODE)
 295             xml_sortkey = attr->children->content;
 296         else if (!xmlStrcmp(attr->name, BAD_CAST "merge") &&
 297                  attr->children && attr->children->type == XML_TEXT_NODE)
 298             xml_merge = attr->children->content;
 299         else if (!xmlStrcmp(attr->name, BAD_CAST "type") &&
 300                  attr->children && attr->children->type == XML_TEXT_NODE)
 301             xml_type = attr->children->content;
 302         else if (!xmlStrcmp(attr->name, BAD_CAST "termlist") &&
 303                  attr->children && attr->children->type == XML_TEXT_NODE)
 304             xml_termlist = attr->children->content;
 305         else if (!xmlStrcmp(attr->name, BAD_CAST "rank") &&
 306                  attr->children && attr->children->type == XML_TEXT_NODE)
 307             xml_rank = attr->children->content;
 308         else if (!xmlStrcmp(attr->name, BAD_CAST "setting") &&
 309                  attr->children && attr->children->type == XML_TEXT_NODE)
 310             xml_setting = attr->children->content;
 311         else if (!xmlStrcmp(attr->name, BAD_CAST "mergekey") &&
 312                  attr->children && attr->children->type == XML_TEXT_NODE)
 313             xml_mergekey = attr->children->content;
 314         else
 315         {
 316             yaz_log(YLOG_FATAL, "Unknown metadata attribute '%s'", attr->name);
 317             return -1;
 318         }
 319     }
 320
 321     // now do the parsing logic
 322     if (!xml_name)
 323     {
 324         yaz_log(YLOG_FATAL, "Must specify name in metadata element");
 325         return -1;
 326     }
 327     if (xml_brief)
 328     {
 329         if (!strcmp((const char *) xml_brief, "yes"))
 330             brief = 1;
 331         else if (strcmp((const char *) xml_brief, "no"))
 332         {
 333             yaz_log(YLOG_FATAL, "metadata/brief must be yes or no");
 334             return -1;
 335         }
 336     }
 337
 338     if (xml_termlist)
 339     {
 340         if (!strcmp((const char *) xml_termlist, "yes"))
 341             termlist = 1;
 342         else if (strcmp((const char *) xml_termlist, "no"))
 343         {
 344             yaz_log(YLOG_FATAL, "metadata/termlist must be yes or no");
 345             return -1;
 346         }
 347     }
 348
 349     if (xml_rank)
 350         rank = atoi((const char *) xml_rank);
 351
 352     if (xml_type)
 353     {
 354         if (!strcmp((const char *) xml_type, "generic"))
 355             type = Metadata_type_generic;
 356         else if (!strcmp((const char *) xml_type, "year"))
 357             type = Metadata_type_year;
 358         else if (!strcmp((const char *) xml_type, "date"))
 359             type = Metadata_type_date;
 360         else
 361         {
 362             yaz_log(YLOG_FATAL,
 363                     "Unknown value for metadata/type: %s", xml_type);
 364             return -1;
 365         }
 366     }
 367
 368     if (xml_merge)
 369     {
 370         if (!strcmp((const char *) xml_merge, "no"))
 371             merge = Metadata_merge_no;
 372         else if (!strcmp((const char *) xml_merge, "unique"))
 373             merge = Metadata_merge_unique;
 374         else if (!strcmp((const char *) xml_merge, "longest"))
 375             merge = Metadata_merge_longest;
 376         else if (!strcmp((const char *) xml_merge, "range"))
 377             merge = Metadata_merge_range;
 378         else if (!strcmp((const char *) xml_merge, "all"))
 379             merge = Metadata_merge_all;
 380         else
 381         {
 382             yaz_log(YLOG_FATAL,
 383                     "Unknown value for metadata/merge: %s", xml_merge);
 384             return -1;
 385         }
 386     }
 387
 388     if (xml_setting)
 389     {
 390         if (!strcmp((const char *) xml_setting, "no"))
 391             setting = Metadata_setting_no;
 392         else if (!strcmp((const char *) xml_setting, "postproc"))
 393             setting = Metadata_setting_postproc;
 394         else if (!strcmp((const char *) xml_setting, "parameter"))
 395             setting = Metadata_setting_parameter;
 396         else
 397         {
 398             yaz_log(YLOG_FATAL,
 399                     "Unknown value for medadata/setting: %s", xml_setting);
 400             return -1;
 401         }
 402     }
 403
 404     // add a sortkey if so specified
 405     if (xml_sortkey && strcmp((const char *) xml_sortkey, "no"))
 406     {
 407         if (merge == Metadata_merge_no)
 408         {
 409             yaz_log(YLOG_FATAL,
 410                     "Can't specify sortkey on a non-merged field");
 411             return -1;
 412         }
 413         if (!strcmp((const char *) xml_sortkey, "numeric"))
 414             sk_type = Metadata_sortkey_numeric;
 415         else if (!strcmp((const char *) xml_sortkey, "skiparticle"))
 416             sk_type = Metadata_sortkey_skiparticle;
 417         else
 418         {
 419             yaz_log(YLOG_FATAL,
 420                     "Unknown sortkey in metadata element: %s",
 421                     xml_sortkey);
 422             return -1;
 423         }
 424         sortkey_offset = *sk_node;
 425
 426         conf_service_add_sortkey(service, *sk_node,
 427                                  (const char *) xml_name, sk_type);
 428         (*sk_node)++;
 429     }
 430     else
 431         sortkey_offset = -1;
 432
 433     if (xml_mergekey)
 434     {
 435         if (!strcmp((const char *) xml_mergekey, "required"))
 436             mergekey_type = Metadata_mergekey_required;
 437         else if (!strcmp((const char *) xml_mergekey, "optional"))
 438             mergekey_type = Metadata_mergekey_optional;
 439         else if (!strcmp((const char *) xml_mergekey, "no"))
 440             mergekey_type = Metadata_mergekey_no;
 441         else
 442         {
 443             yaz_log(YLOG_FATAL, "Unknown value for mergekey: %s", xml_mergekey);
 444             return -1;
 445         }
 446     }
 447
 448     // metadata known, assign values
 449     conf_service_add_metadata(service, *md_node,
 450                               (const char *) xml_name,
 451                               type, merge, setting,
 452                               brief, termlist, rank, sortkey_offset,
 453                               mergekey_type);
 454     (*md_node)++;
 455     return 0;
 456 }
 457
 458 static struct conf_service *service_create_static(struct conf_server *server,
 459                                                   xmlNode *node,
 460                                                   const char *service_id)
 461 {
 462     xmlNode *n;
 463     int md_node = 0;
 464     int sk_node = 0;
 465
 466     struct conf_service *service = 0;
 467     int num_metadata = 0;
 468     int num_sortkeys = 0;
 469     int got_settings = 0;
 470
 471     // count num_metadata and num_sortkeys
 472     for (n = node->children; n; n = n->next)
 473         if (n->type == XML_ELEMENT_NODE && !strcmp((const char *)
 474                                                    n->name, "metadata"))
 475         {
 476             xmlChar *sortkey = xmlGetProp(n, (xmlChar *) "sortkey");
 477             num_metadata++;
 478             if (sortkey && strcmp((const char *) sortkey, "no"))
 479                 num_sortkeys++;
 480             xmlFree(sortkey);
 481         }
 482
 483     service = service_init(server, num_metadata, num_sortkeys, service_id);
 484
 485     for (n = node->children; n; n = n->next)
 486     {
 487         if (n->type != XML_ELEMENT_NODE)
 488             continue;
 489         if (!strcmp((const char *) n->name, "timeout"))
 490         {
 491             xmlChar *src = xmlGetProp(n, (xmlChar *) "session");
 492             if (src)
 493             {
 494                 service->session_timeout = atoi((const char *) src);
 495                 xmlFree(src);
 496                 if (service->session_timeout < 9)
 497                 {
 498                     yaz_log(YLOG_FATAL, "session timeout out of range");
 499                     return 0;
 500                 }
 501             }
 502             src = xmlGetProp(n, (xmlChar *) "z3950_operation");
 503             if (src)
 504             {
 505                 service->z3950_operation_timeout = atoi((const char *) src);
 506                 xmlFree(src);
 507                 if (service->z3950_session_timeout < 9)
 508                 {
 509                     yaz_log(YLOG_FATAL, "Z39.50 operation timeout out of range");
 510                     return 0;
 511                 }
 512             }
 513             src = xmlGetProp(n, (xmlChar *) "z3950_session");
 514             if (src)
 515             {
 516                 service->z3950_session_timeout = atoi((const char *) src);
 517                 xmlFree(src);
 518                 if (service->z3950_session_timeout < 9)
 519                 {
 520                     yaz_log(YLOG_FATAL, "Z39.50 session timeout out of range");
 521                     return 0;
 522                 }
 523             }
 524         }
 525         else if (!strcmp((const char *) n->name, "settings"))
 526             got_settings++;
 527         else if (!strcmp((const char *) n->name, "relevance"))
 528         {
 529             if (service->relevance_pct)
 530             {
 531                 yaz_log(YLOG_LOG, "relevance may not repeat in service");
 532                 return 0;
 533             }
 534             else
 535             {
 536                 service->relevance_pct = pp2_charset_create_xml(n);
 537                 if (!service->relevance_pct)
 538                     return 0;
 539             }
 540         }
 541         else if (!strcmp((const char *) n->name, "sort"))
 542         {
 543             if (service->sort_pct)
 544             {
 545                 yaz_log(YLOG_LOG, "sort may not repeat in service");
 546                 return 0;
 547             }
 548             else
 549             {
 550                 service->sort_pct = pp2_charset_create_xml(n);
 551                 if (!service->sort_pct)
 552                     return 0;
 553             }
 554         }
 555         else if (!strcmp((const char *) n->name, "mergekey"))
 556         {
 557             if (service->mergekey_pct)
 558             {
 559                 yaz_log(YLOG_LOG, "mergekey may not repeat in service");
 560                 return 0;
 561             }
 562             else
 563             {
 564                 service->mergekey_pct = pp2_charset_create_xml(n);
 565                 if (!service->mergekey_pct)
 566                     return 0;
 567             }
 568         }
 569         else if (!strcmp((const char *) n->name, "facet"))
 570         {
 571             if (service->facet_pct)
 572             {
 573                 yaz_log(YLOG_LOG, "facet may not repeat in service");
 574                 return 0;
 575             }
 576             else
 577             {
 578                 service->facet_pct = pp2_charset_create_xml(n);
 579                 if (!service->facet_pct)
 580                     return 0;
 581             }
 582         }
 583         else if (!strcmp((const char *) n->name, (const char *) "metadata"))
 584         {
 585             if (parse_metadata(service, n, &md_node, &sk_node))
 586                 return 0;
 587         }
 588         else
 589         {
 590             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 591             return 0;
 592         }
 593     }
 594     if (got_settings)
 595     {
 596         int pass;
 597         /* metadata has been read.. Consider now settings */
 598         init_settings(service);
 599         for (pass = 1; pass <= 2; pass++)
 600         {
 601             for (n = node->children; n; n = n->next)
 602             {
 603                 if (n->type != XML_ELEMENT_NODE)
 604                     continue;
 605                 if (!strcmp((const char *) n->name, "settings"))
 606                 {
 607                     xmlChar *src = xmlGetProp(n, (xmlChar *) "src");
 608                     if (src)
 609                     {
 610                         WRBUF w = wrbuf_alloc();
 611                         conf_dir_path(server->config, w, (const char *) src);
 612                         settings_read_file(service, wrbuf_cstr(w), pass);
 613                         wrbuf_destroy(w);
 614                         xmlFree(src);
 615                     }
 616                     else
 617                     {
 618                         settings_read_node(service, n, pass);
 619                     }
 620                 }
 621             }
 622         }
 623     }
 624     return service;
 625 }
 626
 627 static char *parse_settings(struct conf_config *config,
 628                             NMEM nmem, xmlNode *node)
 629 {
 630     xmlChar *src = xmlGetProp(node, (xmlChar *) "src");
 631     char *r;
 632
 633     if (src)
 634     {
 635         WRBUF w = wrbuf_alloc();
 636         conf_dir_path(config, w, (const char *) src);
 637         r = nmem_strdup(nmem, wrbuf_cstr(w));
 638         wrbuf_destroy(w);
 639     }
 640     else
 641     {
 642         yaz_log(YLOG_FATAL, "Must specify src in targetprofile");
 643         return 0;
 644     }
 645     xmlFree(src);
 646     return r;
 647 }
 648
 649 static void inherit_server_settings(struct conf_service *s)
 650 {
 651     struct conf_server *server = s->server;
 652     if (!s->dictionary) /* service has no config settings ? */
 653     {
 654         if (server->server_settings)
 655         {
 656             /* inherit settings from server */
 657             init_settings(s);
 658             settings_read_file(s, server->server_settings, 1);
 659             settings_read_file(s, server->server_settings, 2);
 660         }
 661         else
 662         {
 663             yaz_log(YLOG_WARN, "service '%s' has no settings",
 664                     s->id ? s->id : "unnamed");
 665             init_settings(s);
 666         }
 667     }
 668
 669     /* use relevance/sort/mergekey/facet from server if not defined
 670        for this service.. */
 671     if (!s->relevance_pct)
 672     {
 673         if (server->relevance_pct)
 674         {
 675             s->relevance_pct = server->relevance_pct;
 676             pp2_charset_incref(s->relevance_pct);
 677         }
 678         else
 679             s->relevance_pct = pp2_charset_create_a_to_z();
 680     }
 681
 682     if (!s->sort_pct)
 683     {
 684         if (server->sort_pct)
 685         {
 686             s->sort_pct = server->sort_pct;
 687             pp2_charset_incref(s->sort_pct);
 688         }
 689         else
 690             s->sort_pct = pp2_charset_create_a_to_z();
 691     }
 692
 693     if (!s->mergekey_pct)
 694     {
 695         if (server->mergekey_pct)
 696         {
 697             s->mergekey_pct = server->mergekey_pct;
 698             pp2_charset_incref(s->mergekey_pct);
 699         }
 700         else
 701             s->mergekey_pct = pp2_charset_create_a_to_z();
 702     }
 703
 704     if (!s->facet_pct)
 705     {
 706         if (server->facet_pct)
 707         {
 708             s->facet_pct = server->facet_pct;
 709             pp2_charset_incref(s->facet_pct);
 710         }
 711         else
 712             s->facet_pct = pp2_charset_create(0);
 713     }
 714 }
 715
 716 struct conf_service *service_create(struct conf_server *server,
 717                                     xmlNode *node)
 718 {
 719     struct conf_service *service = service_create_static(server,
 720                                                          node, 0);
 721     if (service)
 722     {
 723         inherit_server_settings(service);
 724         resolve_databases(service);
 725         assert(service->mutex == 0);
 726         pazpar2_mutex_create(&service->mutex, "conf");
 727     }
 728     return service;
 729 }
 730
 731 static struct conf_server *server_create(struct conf_config *config,
 732                                          NMEM nmem, xmlNode *node)
 733 {
 734     xmlNode *n;
 735     struct conf_server *server = nmem_malloc(nmem, sizeof(struct conf_server));
 736     xmlChar *server_id = xmlGetProp(node, (xmlChar *) "id");
 737
 738     server->host = 0;
 739     server->port = 0;
 740     server->proxy_host = 0;
 741     server->proxy_port = 0;
 742     server->myurl = 0;
 743     server->service = 0;
 744     server->config = config;
 745     server->next = 0;
 746     server->relevance_pct = 0;
 747     server->sort_pct = 0;
 748     server->mergekey_pct = 0;
 749     server->facet_pct = 0;
 750     server->server_settings = 0;
 751     server->http_server = 0;
 752     server->iochan_man = 0;
 753     server->database_hosts = 0;
 754
 755     if (server_id)
 756     {
 757         server->server_id = nmem_strdup(nmem, (const char *)server_id);
 758         xmlFree(server_id);
 759     }
 760     else
 761         server->server_id = 0;
 762     for (n = node->children; n; n = n->next)
 763     {
 764         if (n->type != XML_ELEMENT_NODE)
 765             continue;
 766         if (!strcmp((const char *) n->name, "listen"))
 767         {
 768             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 769             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 770             if (port)
 771                 server->port = atoi((const char *) port);
 772             if (host)
 773                 server->host = nmem_strdup(nmem, (const char *) host);
 774             xmlFree(port);
 775             xmlFree(host);
 776         }
 777         else if (!strcmp((const char *) n->name, "proxy"))
 778         {
 779             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 780             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 781             xmlChar *myurl = xmlGetProp(n, (xmlChar *) "myurl");
 782             if (port)
 783                 server->proxy_port = atoi((const char *) port);
 784             if (host)
 785                 server->proxy_host = nmem_strdup(nmem, (const char *) host);
 786             if (myurl)
 787                 server->myurl = nmem_strdup(nmem, (const char *) myurl);
 788             xmlFree(port);
 789             xmlFree(host);
 790             xmlFree(myurl);
 791         }
 792         else if (!strcmp((const char *) n->name, "settings"))
 793         {
 794             if (server->server_settings)
 795             {
 796                 yaz_log(YLOG_FATAL, "Can't repeat 'settings'");
 797                 return 0;
 798             }
 799             if (!(server->server_settings = parse_settings(config, nmem, n)))
 800                 return 0;
 801         }
 802         else if (!strcmp((const char *) n->name, "relevance"))
 803         {
 804             server->relevance_pct = pp2_charset_create_xml(n);
 805             if (!server->relevance_pct)
 806                 return 0;
 807         }
 808         else if (!strcmp((const char *) n->name, "sort"))
 809         {
 810             server->sort_pct = pp2_charset_create_xml(n);
 811             if (!server->sort_pct)
 812                 return 0;
 813         }
 814         else if (!strcmp((const char *) n->name, "mergekey"))
 815         {
 816             server->mergekey_pct = pp2_charset_create_xml(n);
 817             if (!server->mergekey_pct)
 818                 return 0;
 819         }
 820         else if (!strcmp((const char *) n->name, "facet"))
 821         {
 822             server->facet_pct = pp2_charset_create_xml(n);
 823             if (!server->facet_pct)
 824                 return 0;
 825         }
 826         else if (!strcmp((const char *) n->name, "service"))
 827         {
 828             char *service_id = (char *)
 829                 xmlGetProp(n, (xmlChar *) "id");
 830
 831             struct conf_service **sp = &server->service;
 832             for (; *sp; sp = &(*sp)->next)
 833                 if ((*sp)->id && service_id &&
 834                     0 == strcmp((*sp)->id, service_id))
 835                 {
 836                     yaz_log(YLOG_FATAL, "Duplicate service: %s", service_id);
 837                     break;
 838                 }
 839                 else if (!(*sp)->id && !service_id)
 840                 {
 841                     yaz_log(YLOG_FATAL, "Duplicate unnamed service");
 842                     break;
 843                 }
 844
 845             if (*sp)  /* service already exist */
 846             {
 847                 xmlFree(service_id);
 848                 return 0;
 849             }
 850             else
 851             {
 852                 struct conf_service *s = service_create_static(server, n,
 853                                                                service_id);
 854                 xmlFree(service_id);
 855                 if (!s)
 856                     return 0;
 857                 *sp = s;
 858             }
 859         }
 860         else
 861         {
 862             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 863             return 0;
 864         }
 865     }
 866     if (server->service)
 867     {
 868         struct conf_service *s;
 869         for (s = server->service; s; s = s->next)
 870             inherit_server_settings(s);
 871     }
 872     return server;
 873 }
 874
 875 WRBUF conf_get_fname(struct conf_config *config, const char *fname)
 876 {
 877     WRBUF w = wrbuf_alloc();
 878
 879     conf_dir_path(config, w, fname);
 880     return w;
 881 }
 882
 883 struct conf_service *locate_service(struct conf_server *server,
 884                                     const char *service_id)
 885 {
 886     struct conf_service *s = server->service;
 887     for (; s; s = s->next)
 888         if (s->id && service_id && 0 == strcmp(s->id, service_id))
 889             break;
 890         else if (!s->id && !service_id)
 891             break;
 892     if (s)
 893         service_incref(s);
 894     return s;
 895 }
 896
 897 void info_services(struct conf_server *server, WRBUF w)
 898 {
 899     struct conf_service *s = server->service;
 900     wrbuf_puts(w, " <services>\n");
 901     for (; s; s = s->next)
 902     {
 903         wrbuf_puts(w, "  <service");
 904         if (s->id)
 905         {
 906             wrbuf_puts(w, " id=\"");
 907             wrbuf_xmlputs(w, s->id);
 908             wrbuf_puts(w, "\"");
 909         }
 910         wrbuf_puts(w, "/>");
 911
 912         wrbuf_puts(w, "\n");
 913     }
 914     wrbuf_puts(w, " </services>\n");
 915 }
 916
 917 static int parse_config(struct conf_config *config, xmlNode *root)
 918 {
 919     xmlNode *n;
 920
 921     for (n = root->children; n; n = n->next)
 922     {
 923         if (n->type != XML_ELEMENT_NODE)
 924             continue;
 925         if (!strcmp((const char *) n->name, "server"))
 926         {
 927             struct conf_server *tmp = server_create(config, config->nmem, n);
 928             if (!tmp)
 929                 return -1;
 930             tmp->next = config->servers;
 931             config->servers = tmp;
 932         }
 933         else if (!strcmp((const char *) n->name, "threads"))
 934         {
 935             xmlChar *number = xmlGetProp(n, (xmlChar *) "number");
 936             if (number)
 937             {
 938                 config->no_threads = atoi((const char *) number);
 939                 xmlFree(number);
 940             }
 941         }
 942         else if (!strcmp((const char *) n->name, "targetprofiles"))
 943         {
 944             yaz_log(YLOG_FATAL, "targetprofiles unsupported here. Must be part of service");
 945             return -1;
 946
 947         }
 948         else
 949         {
 950             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 951             return -1;
 952         }
 953     }
 954     return 0;
 955 }
 956
 957 struct conf_config *config_create(const char *fname, int verbose)
 958 {
 959     xmlDoc *doc = xmlParseFile(fname);
 960     xmlNode *n;
 961     const char *p;
 962     int r;
 963     NMEM nmem = nmem_create();
 964     struct conf_config *config = nmem_malloc(nmem, sizeof(struct conf_config));
 965
 966     xmlSubstituteEntitiesDefault(1);
 967     xmlLoadExtDtdDefaultValue = 1;
 968     if (!doc)
 969     {
 970         yaz_log(YLOG_FATAL, "Failed to read %s", fname);
 971         nmem_destroy(nmem);
 972         return 0;
 973     }
 974
 975     config->nmem = nmem;
 976     config->servers = 0;
 977     config->no_threads = 0;
 978     config->iochan_man = 0;
 979
 980     config->confdir = wrbuf_alloc();
 981     if ((p = strrchr(fname,
 982 #ifdef WIN32
 983                      '\\'
 984 #else
 985                      '/'
 986 #endif
 987              )))
 988     {
 989         int len = p - fname;
 990         wrbuf_write(config->confdir, fname, len);
 991     }
 992     wrbuf_puts(config->confdir, "");
 993
 994     n = xmlDocGetRootElement(doc);
 995     r = yaz_xml_include_simple(n, wrbuf_cstr(config->confdir));
 996     if (r == 0) /* OK */
 997     {
 998         if (verbose)
 999         {
1000             yaz_log(YLOG_LOG, "Configuration %s after include processing",
1001                     fname);
1002 #if LIBXML_VERSION >= 20600
1003             xmlDocFormatDump(yaz_log_file(), doc, 0);
1004 #else
1005             xmlDocDump(yaz_log_file(), doc);
1006 #endif
1007         }
1008         r = parse_config(config, n);
1009     }
1010     xmlFreeDoc(doc);
1011
1012     if (r)
1013     {
1014         config_destroy(config);
1015         return 0;
1016     }
1017     return config;
1018 }
1019
1020 void server_destroy(struct conf_server *server)
1021 {
1022     struct conf_service *s = server->service;
1023     while (s)
1024     {
1025         struct conf_service *s_next = s->next;
1026         service_destroy(s);
1027         s = s_next;
1028     }
1029     pp2_charset_destroy(server->relevance_pct);
1030     pp2_charset_destroy(server->sort_pct);
1031     pp2_charset_destroy(server->mergekey_pct);
1032     pp2_charset_destroy(server->facet_pct);
1033     yaz_log(YLOG_LOG, "server_destroy server=%p", server);
1034     http_server_destroy(server->http_server);
1035 }
1036
1037 void config_destroy(struct conf_config *config)
1038 {
1039     if (config)
1040     {
1041         struct conf_server *server = config->servers;
1042         iochan_man_destroy(&config->iochan_man);
1043         while (server)
1044         {
1045             struct conf_server *s_next = server->next;
1046             server_destroy(server);
1047             server = s_next;
1048         }
1049         database_hosts_destroy(&config->database_hosts);
1050
1051         wrbuf_destroy(config->confdir);
1052         nmem_destroy(config->nmem);
1053     }
1054 }
1055
1056 void config_stop_listeners(struct conf_config *conf)
1057 {
1058     struct conf_server *ser;
1059     for (ser = conf->servers; ser; ser = ser->next)
1060         http_close_server(ser);
1061 }
1062
1063 void config_process_events(struct conf_config *conf)
1064 {
1065     struct conf_server *ser;
1066
1067     conf->database_hosts = database_hosts_create();
1068     for (ser = conf->servers; ser; ser = ser->next)
1069     {
1070         struct conf_service *s = ser->service;
1071
1072         ser->database_hosts = conf->database_hosts;
1073
1074         for (;s ; s = s->next)
1075         {
1076             resolve_databases(s);
1077             assert(s->mutex == 0);
1078             pazpar2_mutex_create(&s->mutex, "service");
1079         }
1080         http_mutex_init(ser);
1081     }
1082     iochan_man_events(conf->iochan_man);
1083 }
1084
1085 int config_start_listeners(struct conf_config *conf,
1086                            const char *listener_override,
1087                            const char *record_fname)
1088 {
1089     struct conf_server *ser;
1090
1091     conf->iochan_man = iochan_man_create(conf->no_threads);
1092     for (ser = conf->servers; ser; ser = ser->next)
1093     {
1094         WRBUF w = wrbuf_alloc();
1095         int r;
1096
1097         ser->iochan_man = conf->iochan_man;
1098         if (listener_override)
1099         {
1100             wrbuf_puts(w, listener_override);
1101             listener_override = 0; /* only first server is overriden */
1102         }
1103         else
1104         {
1105             if (ser->host)
1106                 wrbuf_puts(w, ser->host);
1107             if (ser->port)
1108             {
1109                 if (wrbuf_len(w))
1110                     wrbuf_puts(w, ":");
1111                 wrbuf_printf(w, "%d", ser->port);
1112             }
1113         }
1114         r = http_init(wrbuf_cstr(w), ser, record_fname);
1115         wrbuf_destroy(w);
1116         if (r)
1117             return -1;
1118
1119         w = wrbuf_alloc();
1120         if (ser->proxy_host || ser->proxy_port)
1121         {
1122             if (ser->proxy_host)
1123                 wrbuf_puts(w, ser->proxy_host);
1124             if (ser->proxy_port)
1125             {
1126                 if (wrbuf_len(w))
1127                     wrbuf_puts(w, ":");
1128                 wrbuf_printf(w, "%d", ser->proxy_port);
1129             }
1130         }
1131         if (wrbuf_len(w))
1132             http_set_proxyaddr(wrbuf_cstr(w), ser);
1133         wrbuf_destroy(w);
1134     }
1135     return 0;
1136 }
1137
1138 /*
1139  * Local variables:
1140  * c-basic-offset: 4
1141  * c-file-style: "Stroustrup"
1142  * indent-tabs-mode: nil
1143  * End:
1144  * vim: shiftwidth=4 tabstop=8 expandtab
1145  */
1146