src/pazpar2_config.c

   1 /* This file is part of Pazpar2.
   2    Copyright (C) 2006-2009 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 #include <libxslt/xslt.h>
  30 #include <libxslt/transform.h>
  31 #include <libxslt/xsltutils.h>
  32
  33 #include <yaz/yaz-util.h>
  34 #include <yaz/nmem.h>
  35 #include <yaz/snprintf.h>
  36 #include <yaz/tpath.h>
  37
  38 #if HAVE_GLOB_H
  39 #define USE_POSIX_GLOB 1
  40 #else
  41 #define USE_POSIX_GLOB 0
  42 #endif
  43
  44
  45 #if USE_POSIX_GLOB
  46 #include <glob.h>
  47 #endif
  48 #include <sys/types.h>
  49 #include <sys/stat.h>
  50 #if HAVE_UNISTD_H
  51 #include <unistd.h>
  52 #endif
  53 #include "pazpar2_config.h"
  54 #include "settings.h"
  55 #include "eventl.h"
  56 #include "http.h"
  57
  58 struct conf_config
  59 {
  60     NMEM nmem; /* for conf_config and servers memory */
  61     struct conf_server *servers;
  62     WRBUF confdir;
  63 };
  64
  65
  66 static char *parse_settings(struct conf_config *config,
  67                             NMEM nmem, xmlNode *node);
  68
  69 static struct conf_targetprofiles *parse_targetprofiles(NMEM nmem,
  70                                                         xmlNode *node);
  71
  72 static void conf_metadata_assign(NMEM nmem,
  73                                  struct conf_metadata * metadata,
  74                                  const char *name,
  75                                  enum conf_metadata_type type,
  76                                  enum conf_metadata_merge merge,
  77                                  enum conf_setting_type setting,
  78                                  int brief,
  79                                  int termlist,
  80                                  int rank,
  81                                  int sortkey_offset,
  82                                  enum conf_metadata_mergekey mt)
  83 {
  84     assert(nmem && metadata && name);
  85
  86     metadata->name = nmem_strdup(nmem, name);
  87
  88     metadata->type = type;
  89
  90     // enforcing that type_year is always range_merge
  91     if (metadata->type == Metadata_type_year)
  92         metadata->merge = Metadata_merge_range;
  93     else
  94         metadata->merge = merge;
  95
  96     metadata->setting = setting;
  97     metadata->brief = brief;
  98     metadata->termlist = termlist;
  99     metadata->rank = rank;
 100     metadata->sortkey_offset = sortkey_offset;
 101     metadata->mergekey = mt;
 102 }
 103
 104
 105 static void conf_sortkey_assign(NMEM nmem,
 106                                 struct conf_sortkey * sortkey,
 107                                 const char *name,
 108                                 enum conf_sortkey_type type)
 109 {
 110     assert(nmem && sortkey && name);
 111
 112     sortkey->name = nmem_strdup(nmem, name);
 113     sortkey->type = type;
 114 }
 115
 116
 117 static struct conf_service *service_init(struct conf_config *config,
 118                                          int num_metadata, int num_sortkeys,
 119                                          const char *service_id)
 120 {
 121     struct conf_service * service = 0;
 122     NMEM nmem = nmem_create();
 123
 124     service = nmem_malloc(nmem, sizeof(struct conf_service));
 125     service->nmem = nmem;
 126     service->next = 0;
 127     service->settings = 0;
 128     service->databases = 0;
 129     service->targetprofiles = 0;
 130     service->config = config;
 131
 132     service->relevance_pct = 0;
 133     service->sort_pct = 0;
 134     service->mergekey_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 struct conf_metadata* conf_service_add_metadata(struct conf_service *service,
 154                                                 int field_id,
 155                                                 const char *name,
 156                                                 enum conf_metadata_type type,
 157                                                 enum conf_metadata_merge merge,
 158                                                 enum conf_setting_type setting,
 159                                                 int brief,
 160                                                 int termlist,
 161                                                 int rank,
 162                                                 int sortkey_offset,
 163                                                 enum conf_metadata_mergekey mt)
 164 {
 165     struct conf_metadata * md = 0;
 166
 167     if (!service || !service->metadata || !service->num_metadata
 168         || field_id < 0  || !(field_id < service->num_metadata))
 169         return 0;
 170
 171     md = service->metadata + field_id;
 172     conf_metadata_assign(service->nmem, md, name, type, merge, setting,
 173                          brief, termlist, rank, sortkey_offset,
 174                          mt);
 175     return md;
 176 }
 177
 178
 179 struct conf_sortkey * conf_service_add_sortkey(struct conf_service *service,
 180                                                int field_id,
 181                                                const char *name,
 182                                                enum conf_sortkey_type type)
 183 {
 184     struct conf_sortkey * sk = 0;
 185
 186     if (!service || !service->sortkeys || !service->num_sortkeys
 187         || field_id < 0  || !(field_id < service->num_sortkeys))
 188         return 0;
 189
 190     //sk = &((service->sortkeys)[field_id]);
 191     sk = service->sortkeys + field_id;
 192     conf_sortkey_assign(service->nmem, sk, name, type);
 193
 194     return sk;
 195 }
 196
 197
 198 int conf_service_metadata_field_id(struct conf_service *service,
 199                                    const char * name)
 200 {
 201     int i = 0;
 202
 203     if (!service || !service->metadata || !service->num_metadata)
 204         return -1;
 205
 206     for(i = 0; i < service->num_metadata; i++) {
 207         if (!strcmp(name, (service->metadata[i]).name))
 208             return i;
 209     }
 210
 211     return -1;
 212 }
 213
 214
 215 int conf_service_sortkey_field_id(struct conf_service *service,
 216                                   const char * name)
 217 {
 218     int i = 0;
 219
 220     if (!service || !service->sortkeys || !service->num_sortkeys)
 221         return -1;
 222
 223     for(i = 0; i < service->num_sortkeys; i++) {
 224         if (!strcmp(name, (service->sortkeys[i]).name))
 225             return i;
 226     }
 227
 228     return -1;
 229 }
 230
 231 static void conf_dir_path(struct conf_config *config, WRBUF w, const char *src)
 232 {
 233     if (config->confdir && wrbuf_len(config->confdir) > 0 &&
 234         !yaz_is_abspath(src))
 235     {
 236         wrbuf_printf(w, "%s/%s", wrbuf_cstr(config->confdir), src);
 237     }
 238     else
 239         wrbuf_puts(w, src);
 240 }
 241
 242 static void service_destroy(struct conf_service *service)
 243 {
 244     if (service)
 245     {
 246         pp2_charset_destroy(service->relevance_pct);
 247         pp2_charset_destroy(service->sort_pct);
 248         pp2_charset_destroy(service->mergekey_pct);
 249         nmem_destroy(service->nmem);
 250     }
 251 }
 252
 253 static struct conf_service *service_create(struct conf_config *config,
 254                                            xmlNode *node,
 255                                            const char *service_id)
 256 {
 257     xmlNode *n;
 258     int md_node = 0;
 259     int sk_node = 0;
 260
 261     struct conf_service *service = 0;
 262     int num_metadata = 0;
 263     int num_sortkeys = 0;
 264     int got_settings = 0;
 265
 266     // count num_metadata and num_sortkeys
 267     for (n = node->children; n; n = n->next)
 268         if (n->type == XML_ELEMENT_NODE && !strcmp((const char *)
 269                                                    n->name, "metadata"))
 270         {
 271             xmlChar *sortkey = xmlGetProp(n, (xmlChar *) "sortkey");
 272             num_metadata++;
 273             if (sortkey && strcmp((const char *) sortkey, "no"))
 274                 num_sortkeys++;
 275             xmlFree(sortkey);
 276         }
 277
 278     service = service_init(config, num_metadata, num_sortkeys, service_id);
 279
 280     for (n = node->children; n; n = n->next)
 281     {
 282         if (n->type != XML_ELEMENT_NODE)
 283             continue;
 284         if (!strcmp((const char *) n->name, "settings"))
 285             got_settings++;
 286         else if (!strcmp((const char *) n->name, (const char *) "targetprofiles"))
 287         {
 288             if (service->targetprofiles)
 289             {
 290                 yaz_log(YLOG_FATAL, "Can't repeat targetprofiles");
 291                 return 0;
 292             }
 293             if (!(service->targetprofiles =
 294                   parse_targetprofiles(service->nmem, n)))
 295                 return 0;
 296         }
 297         else if (!strcmp((const char *) n->name, "relevance"))
 298         {
 299             if (service->relevance_pct)
 300             {
 301                 yaz_log(YLOG_LOG, "relevance may not repeat in service");
 302                 return 0;
 303             }
 304             else
 305             {
 306                 service->relevance_pct = pp2_charset_create_xml(n);
 307                 if (!service->relevance_pct)
 308                     return 0;
 309             }
 310         }
 311         else if (!strcmp((const char *) n->name, "sort"))
 312         {
 313             if (service->sort_pct)
 314             {
 315                 yaz_log(YLOG_LOG, "sort may not repeat in service");
 316                 return 0;
 317             }
 318             else
 319             {
 320                 service->sort_pct = pp2_charset_create_xml(n);
 321                 if (!service->sort_pct)
 322                     return 0;
 323             }
 324         }
 325         else if (!strcmp((const char *) n->name, "mergekey"))
 326         {
 327             if (service->mergekey_pct)
 328             {
 329                 yaz_log(YLOG_LOG, "mergekey may not repeat in service");
 330                 return 0;
 331             }
 332             else
 333             {
 334                 service->mergekey_pct = pp2_charset_create_xml(n);
 335                 if (!service->mergekey_pct)
 336                     return 0;
 337             }
 338         }
 339         else if (!strcmp((const char *) n->name, (const char *) "metadata"))
 340         {
 341             xmlChar *xml_name = xmlGetProp(n, (xmlChar *) "name");
 342             xmlChar *xml_brief = xmlGetProp(n, (xmlChar *) "brief");
 343             xmlChar *xml_sortkey = xmlGetProp(n, (xmlChar *) "sortkey");
 344             xmlChar *xml_merge = xmlGetProp(n, (xmlChar *) "merge");
 345             xmlChar *xml_type = xmlGetProp(n, (xmlChar *) "type");
 346             xmlChar *xml_termlist = xmlGetProp(n, (xmlChar *) "termlist");
 347             xmlChar *xml_rank = xmlGetProp(n, (xmlChar *) "rank");
 348             xmlChar *xml_setting = xmlGetProp(n, (xmlChar *) "setting");
 349             xmlChar *xml_mergekey = xmlGetProp(n, (xmlChar *) "mergekey");
 350
 351             enum conf_metadata_type type = Metadata_type_generic;
 352             enum conf_metadata_merge merge = Metadata_merge_no;
 353             enum conf_setting_type setting = Metadata_setting_no;
 354             enum conf_sortkey_type sk_type = Metadata_sortkey_relevance;
 355             enum conf_metadata_mergekey mergekey_type = Metadata_mergekey_no;
 356             int brief = 0;
 357             int termlist = 0;
 358             int rank = 0;
 359             int sortkey_offset = 0;
 360
 361             // now do the parsing logic
 362             if (!xml_name)
 363             {
 364                 yaz_log(YLOG_FATAL, "Must specify name in metadata element");
 365                 return 0;
 366             }
 367             if (xml_brief)
 368             {
 369                 if (!strcmp((const char *) xml_brief, "yes"))
 370                     brief = 1;
 371                  else if (strcmp((const char *) xml_brief, "no"))
 372                 {
 373                     yaz_log(YLOG_FATAL, "metadata/brief must be yes or no");
 374                     return 0;
 375                 }
 376             }
 377             else
 378                 brief = 0;
 379
 380             if (xml_termlist)
 381             {
 382                 if (!strcmp((const char *) xml_termlist, "yes"))
 383                     termlist = 1;
 384                 else if (strcmp((const char *) xml_termlist, "no"))
 385                 {
 386                     yaz_log(YLOG_FATAL, "metadata/termlist must be yes or no");
 387                     return 0;
 388                 }
 389             }
 390             else
 391                 termlist = 0;
 392
 393             if (xml_rank)
 394                 rank = atoi((const char *) xml_rank);
 395             else
 396                 rank = 0;
 397
 398             if (xml_type)
 399             {
 400                 if (!strcmp((const char *) xml_type, "generic"))
 401                     type = Metadata_type_generic;
 402                 else if (!strcmp((const char *) xml_type, "year"))
 403                     type = Metadata_type_year;
 404                 else if (!strcmp((const char *) xml_type, "date"))
 405                     type = Metadata_type_date;
 406                 else
 407                 {
 408                     yaz_log(YLOG_FATAL,
 409                             "Unknown value for metadata/type: %s", xml_type);
 410                     return 0;
 411                 }
 412             }
 413             else
 414                 type = Metadata_type_generic;
 415
 416             if (xml_merge)
 417             {
 418                 if (!strcmp((const char *) xml_merge, "no"))
 419                     merge = Metadata_merge_no;
 420                 else if (!strcmp((const char *) xml_merge, "unique"))
 421                     merge = Metadata_merge_unique;
 422                 else if (!strcmp((const char *) xml_merge, "longest"))
 423                     merge = Metadata_merge_longest;
 424                 else if (!strcmp((const char *) xml_merge, "range"))
 425                     merge = Metadata_merge_range;
 426                 else if (!strcmp((const char *) xml_merge, "all"))
 427                     merge = Metadata_merge_all;
 428                 else
 429                 {
 430                     yaz_log(YLOG_FATAL,
 431                             "Unknown value for metadata/merge: %s", xml_merge);
 432                     return 0;
 433                 }
 434             }
 435             else
 436                 merge = Metadata_merge_no;
 437
 438             if (xml_setting)
 439             {
 440                 if (!strcmp((const char *) xml_setting, "no"))
 441                     setting = Metadata_setting_no;
 442                 else if (!strcmp((const char *) xml_setting, "postproc"))
 443                     setting = Metadata_setting_postproc;
 444                 else if (!strcmp((const char *) xml_setting, "parameter"))
 445                     setting = Metadata_setting_parameter;
 446                 else
 447                 {
 448                     yaz_log(YLOG_FATAL,
 449                         "Unknown value for medadata/setting: %s", xml_setting);
 450                     return 0;
 451                 }
 452             }
 453
 454             // add a sortkey if so specified
 455             if (xml_sortkey && strcmp((const char *) xml_sortkey, "no"))
 456             {
 457                 if (merge == Metadata_merge_no)
 458                 {
 459                     yaz_log(YLOG_FATAL,
 460                             "Can't specify sortkey on a non-merged field");
 461                     return 0;
 462                 }
 463                 if (!strcmp((const char *) xml_sortkey, "numeric"))
 464                     sk_type = Metadata_sortkey_numeric;
 465                 else if (!strcmp((const char *) xml_sortkey, "skiparticle"))
 466                     sk_type = Metadata_sortkey_skiparticle;
 467                 else
 468                 {
 469                     yaz_log(YLOG_FATAL,
 470                             "Unknown sortkey in metadata element: %s",
 471                             xml_sortkey);
 472                     return 0;
 473                 }
 474                 sortkey_offset = sk_node;
 475
 476                 conf_service_add_sortkey(service, sk_node,
 477                                          (const char *) xml_name, sk_type);
 478
 479                 sk_node++;
 480             }
 481             else
 482                 sortkey_offset = -1;
 483
 484             if (xml_mergekey && strcmp((const char *) xml_mergekey, "no"))
 485             {
 486                 mergekey_type = Metadata_mergekey_yes;
 487             }
 488
 489
 490             // metadata known, assign values
 491             conf_service_add_metadata(service, md_node,
 492                                       (const char *) xml_name,
 493                                       type, merge, setting,
 494                                       brief, termlist, rank, sortkey_offset,
 495                                       mergekey_type);
 496
 497             xmlFree(xml_name);
 498             xmlFree(xml_brief);
 499             xmlFree(xml_sortkey);
 500             xmlFree(xml_merge);
 501             xmlFree(xml_type);
 502             xmlFree(xml_termlist);
 503             xmlFree(xml_rank);
 504             xmlFree(xml_setting);
 505             md_node++;
 506         }
 507         else
 508         {
 509             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 510             return 0;
 511         }
 512     }
 513     if (got_settings)
 514     {
 515         int pass;
 516         /* metadata has been read.. Consider now settings */
 517         init_settings(service);
 518         for (pass = 1; pass <= 2; pass++)
 519         {
 520             for (n = node->children; n; n = n->next)
 521             {
 522                 if (n->type != XML_ELEMENT_NODE)
 523                     continue;
 524                 if (!strcmp((const char *) n->name, "settings"))
 525                 {
 526                     xmlChar *src = xmlGetProp(n, (xmlChar *) "src");
 527                     if (src)
 528                     {
 529                         WRBUF w = wrbuf_alloc();
 530                         conf_dir_path(config, w, (const char *) src);
 531                         settings_read_file(service, wrbuf_cstr(w), pass);
 532                         wrbuf_destroy(w);
 533                         xmlFree(src);
 534                     }
 535                     else
 536                     {
 537                         settings_read_node(service, n, pass);
 538                     }
 539                 }
 540             }
 541         }
 542     }
 543     return service;
 544 }
 545
 546 static char *parse_settings(struct conf_config *config,
 547                             NMEM nmem, xmlNode *node)
 548 {
 549     xmlChar *src = xmlGetProp(node, (xmlChar *) "src");
 550     char *r;
 551
 552     if (src)
 553     {
 554         WRBUF w = wrbuf_alloc();
 555         conf_dir_path(config, w, (const char *) src);
 556         r = nmem_strdup(nmem, wrbuf_cstr(w));
 557         wrbuf_destroy(w);
 558     }
 559     else
 560     {
 561         yaz_log(YLOG_FATAL, "Must specify src in targetprofile");
 562         return 0;
 563     }
 564     xmlFree(src);
 565     return r;
 566 }
 567
 568 static void inherit_server_settings(struct conf_server *server)
 569 {
 570     struct conf_service *s;
 571     for (s = server->service; s; s = s->next)
 572     {
 573         if (!s->dictionary) /* service has no config settings ? */
 574         {
 575             if (server->server_settings)
 576             {
 577                 /* inherit settings from server */
 578                 init_settings(s);
 579                 settings_read_file(s, server->server_settings, 1);
 580                 settings_read_file(s, server->server_settings, 2);
 581             }
 582             else
 583             {
 584                 yaz_log(YLOG_WARN, "service '%s' has no settings",
 585                         s->id ? s->id : "unnamed");
 586                 init_settings(s);
 587             }
 588         }
 589
 590         /* use relevance/sort/mergekey from server if not defined
 591            for this service.. */
 592         if (!s->relevance_pct)
 593         {
 594             if (server->relevance_pct)
 595             {
 596                 s->relevance_pct = server->relevance_pct;
 597                 pp2_charset_incref(s->relevance_pct);
 598             }
 599             else
 600                 s->relevance_pct = pp2_charset_create(0);
 601         }
 602
 603         if (!s->sort_pct)
 604         {
 605             if (server->sort_pct)
 606             {
 607                 s->sort_pct = server->sort_pct;
 608                 pp2_charset_incref(s->sort_pct);
 609             }
 610             else
 611                 s->sort_pct = pp2_charset_create(0);
 612         }
 613
 614         if (!s->mergekey_pct)
 615         {
 616             if (server->mergekey_pct)
 617             {
 618                 s->mergekey_pct = server->mergekey_pct;
 619                 pp2_charset_incref(s->mergekey_pct);
 620             }
 621             else
 622                 s->mergekey_pct = pp2_charset_create(0);
 623         }
 624     }
 625 }
 626
 627 static struct conf_server *server_create(struct conf_config *config,
 628                                          NMEM nmem, xmlNode *node)
 629 {
 630     xmlNode *n;
 631     struct conf_server *server = nmem_malloc(nmem, sizeof(struct conf_server));
 632
 633     server->host = 0;
 634     server->port = 0;
 635     server->proxy_host = 0;
 636     server->proxy_port = 0;
 637     server->myurl = 0;
 638     server->proxy_addr = 0;
 639     server->service = 0;
 640     server->next = 0;
 641     server->relevance_pct = 0;
 642     server->sort_pct = 0;
 643     server->mergekey_pct = 0;
 644     server->server_settings = 0;
 645
 646     for (n = node->children; n; n = n->next)
 647     {
 648         if (n->type != XML_ELEMENT_NODE)
 649             continue;
 650         if (!strcmp((const char *) n->name, "listen"))
 651         {
 652             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 653             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 654             if (port)
 655                 server->port = atoi((const char *) port);
 656             if (host)
 657                 server->host = nmem_strdup(nmem, (const char *) host);
 658             xmlFree(port);
 659             xmlFree(host);
 660         }
 661         else if (!strcmp((const char *) n->name, "proxy"))
 662         {
 663             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 664             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 665             xmlChar *myurl = xmlGetProp(n, (xmlChar *) "myurl");
 666             if (port)
 667                 server->proxy_port = atoi((const char *) port);
 668             if (host)
 669                 server->proxy_host = nmem_strdup(nmem, (const char *) host);
 670             if (myurl)
 671                 server->myurl = nmem_strdup(nmem, (const char *) myurl);
 672             xmlFree(port);
 673             xmlFree(host);
 674             xmlFree(myurl);
 675         }
 676         else if (!strcmp((const char *) n->name, "settings"))
 677         {
 678             if (server->server_settings)
 679             {
 680                 yaz_log(YLOG_FATAL, "Can't repeat 'settings'");
 681                 return 0;
 682             }
 683             if (!(server->server_settings = parse_settings(config, nmem, n)))
 684                 return 0;
 685         }
 686         else if (!strcmp((const char *) n->name, "relevance"))
 687         {
 688             server->relevance_pct = pp2_charset_create_xml(n);
 689             if (!server->relevance_pct)
 690                 return 0;
 691         }
 692         else if (!strcmp((const char *) n->name, "sort"))
 693         {
 694             server->sort_pct = pp2_charset_create_xml(n);
 695             if (!server->sort_pct)
 696                 return 0;
 697         }
 698         else if (!strcmp((const char *) n->name, "mergekey"))
 699         {
 700             server->mergekey_pct = pp2_charset_create_xml(n);
 701             if (!server->mergekey_pct)
 702                 return 0;
 703         }
 704         else if (!strcmp((const char *) n->name, "service"))
 705         {
 706             char *service_id = (char *)
 707                 xmlGetProp(n, (xmlChar *) "id");
 708
 709             struct conf_service **sp = &server->service;
 710             for (; *sp; sp = &(*sp)->next)
 711                 if ((*sp)->id && service_id &&
 712                     0 == strcmp((*sp)->id, service_id))
 713                 {
 714                     yaz_log(YLOG_FATAL, "Duplicate service: %s", service_id);
 715                     break;
 716                 }
 717                 else if (!(*sp)->id && !service_id)
 718                 {
 719                     yaz_log(YLOG_FATAL, "Duplicate unnamed service '%s'",
 720                         service_id);
 721                     break;
 722                 }
 723
 724             if (*sp)  /* service already exist */
 725             {
 726                 xmlFree(service_id);
 727                 return 0;
 728             }
 729             else
 730             {
 731                 struct conf_service *s = service_create(config, n,
 732                                                         service_id);
 733                 xmlFree(service_id);
 734                 if (!s)
 735                     return 0;
 736                 *sp = s;
 737             }
 738         }
 739         else
 740         {
 741             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 742             return 0;
 743         }
 744     }
 745     inherit_server_settings(server);
 746     return server;
 747 }
 748
 749 xsltStylesheet *conf_load_stylesheet(struct conf_config *config,
 750                                      const char *fname)
 751 {
 752     WRBUF w = wrbuf_alloc();
 753     xsltStylesheet *s;
 754
 755     conf_dir_path(config, w, fname);
 756     s = xsltParseStylesheetFile((xmlChar *) wrbuf_cstr(w));
 757     wrbuf_destroy(w);
 758     return s;
 759 }
 760
 761 static struct conf_targetprofiles *parse_targetprofiles(NMEM nmem,
 762                                                         xmlNode *node)
 763 {
 764     struct conf_targetprofiles *r = nmem_malloc(nmem, sizeof(*r));
 765     xmlChar *type = xmlGetProp(node, (xmlChar *) "type");
 766     xmlChar *src = xmlGetProp(node, (xmlChar *) "src");
 767
 768     memset(r, 0, sizeof(*r));
 769
 770     if (type)
 771     {
 772         if (!strcmp((const char *) type, "local"))
 773             r->type = Targetprofiles_local;
 774         else
 775         {
 776             yaz_log(YLOG_FATAL, "Unknown targetprofile type");
 777             return 0;
 778         }
 779     }
 780     else
 781     {
 782         yaz_log(YLOG_FATAL, "Must specify type for targetprofile");
 783         return 0;
 784     }
 785
 786     if (src)
 787         r->src = nmem_strdup(nmem, (const char *) src);
 788     else
 789     {
 790         yaz_log(YLOG_FATAL, "Must specify src in targetprofile");
 791         return 0;
 792     }
 793     xmlFree(type);
 794     xmlFree(src);
 795     return r;
 796 }
 797
 798 struct conf_service *locate_service(struct conf_server *server,
 799                                     const char *service_id)
 800 {
 801     struct conf_service *s = server->service;
 802     for (; s; s = s->next)
 803         if (s->id && service_id && 0 == strcmp(s->id, service_id))
 804             return s;
 805         else if (!s->id && !service_id)
 806             return s;
 807     return 0;
 808 }
 809
 810
 811 static int parse_config(struct conf_config *config, xmlNode *root)
 812 {
 813     xmlNode *n;
 814
 815     for (n = root->children; n; n = n->next)
 816     {
 817         if (n->type != XML_ELEMENT_NODE)
 818             continue;
 819         if (!strcmp((const char *) n->name, "server"))
 820         {
 821             struct conf_server *tmp = server_create(config, config->nmem, n);
 822             if (!tmp)
 823                 return -1;
 824             tmp->next = config->servers;
 825             config->servers = tmp;
 826         }
 827         else if (!strcmp((const char *) n->name, "targetprofiles"))
 828         {
 829             yaz_log(YLOG_FATAL, "targetprofiles unsupported here. Must be part of service");
 830             return -1;
 831
 832         }
 833         else
 834         {
 835             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 836             return -1;
 837         }
 838     }
 839     return 0;
 840 }
 841
 842 static int process_config_includes(struct conf_config *config, xmlNode *n);
 843
 844 static int config_include_one(struct conf_config *config, xmlNode **sib,
 845     const char *path)
 846 {
 847     struct stat st;
 848     if (stat(path, &st) < 0)
 849     {
 850         yaz_log(YLOG_FATAL|YLOG_ERRNO, "stat %s", path);
 851         return -1;
 852     }
 853     else
 854     {
 855         if ((st.st_mode & S_IFMT) == S_IFREG)
 856         {
 857             xmlDoc *doc = xmlParseFile(path);
 858             if (doc)
 859             {
 860                 xmlNodePtr t = xmlDocGetRootElement(doc);
 861                 int ret = process_config_includes(config, t);
 862                 *sib = xmlAddNextSibling(*sib, xmlCopyNode(t, 1));
 863                 xmlFreeDoc(doc);
 864                 if (ret)
 865                     return -1;
 866             }
 867             else
 868             {
 869                 yaz_log(YLOG_FATAL, "Could not parse %s", path);
 870                 return -1;
 871             }
 872         }
 873     }
 874     return 0;
 875 }
 876
 877 static int config_include_src(struct conf_config *config, xmlNode **np,
 878                               const char *src)
 879 {
 880     int ret = 0; /* return code. OK so far */
 881     WRBUF w = wrbuf_alloc();
 882     xmlNodePtr sib; /* our sibling that we append */
 883     xmlNodePtr c; /* tmp node */
 884
 885     wrbuf_printf(w, " begin include src=\"%s\" ", src);
 886
 887     /* replace include element with a 'begin' comment */
 888     sib = xmlNewComment((const xmlChar *) wrbuf_cstr(w));
 889     xmlReplaceNode(*np, sib);
 890
 891     xmlFreeNode(*np);
 892
 893     wrbuf_rewind(w);
 894     conf_dir_path(config, w, src);
 895 #if USE_POSIX_GLOB
 896     {
 897         size_t i;
 898         glob_t glob_res;
 899         glob(wrbuf_cstr(w), 0 /* flags */, 0 /* errfunc */, &glob_res);
 900
 901         for (i = 0; ret == 0 && i < glob_res.gl_pathc; i++)
 902         {
 903             const char *path = glob_res.gl_pathv[i];
 904             ret = config_include_one(config, &sib, path);
 905         }
 906         globfree(&glob_res);
 907     }
 908 #else
 909     ret = config_include_one(config, &sib, wrbuf_cstr(w));
 910 #endif
 911     wrbuf_rewind(w);
 912     wrbuf_printf(w, " end include src=\"%s\" ", src);
 913     c = xmlNewComment((const xmlChar *) wrbuf_cstr(w));
 914     sib = xmlAddNextSibling(sib, c);
 915
 916     *np = sib;
 917     wrbuf_destroy(w);
 918     return ret;
 919 }
 920
 921 static int process_config_includes(struct conf_config *config, xmlNode *n)
 922 {
 923     for (; n; n = n->next)
 924     {
 925         if (n->type == XML_ELEMENT_NODE)
 926         {
 927             if (!strcmp((const char *) n->name, "include"))
 928             {
 929                 xmlChar *src = xmlGetProp(n, (xmlChar *) "src");
 930                 if (src)
 931                 {
 932                     int ret = config_include_src(config, &n,
 933                                                  (const char *) src);
 934                     xmlFree(src);
 935                     if (ret)
 936                         return ret;
 937
 938                 }
 939             }
 940             else
 941             {
 942                 if (process_config_includes(config, n->children))
 943                     return -1;
 944             }
 945         }
 946     }
 947     return 0;
 948 }
 949
 950 struct conf_config *config_create(const char *fname, int verbose)
 951 {
 952     xmlDoc *doc = xmlParseFile(fname);
 953     xmlNode *n;
 954     const char *p;
 955     int r;
 956     NMEM nmem = nmem_create();
 957     struct conf_config *config = nmem_malloc(nmem, sizeof(struct conf_config));
 958
 959     xmlSubstituteEntitiesDefault(1);
 960     xmlLoadExtDtdDefaultValue = 1;
 961     if (!doc)
 962     {
 963         yaz_log(YLOG_FATAL, "Failed to read %s", fname);
 964         nmem_destroy(nmem);
 965         return 0;
 966     }
 967
 968     config->nmem = nmem;
 969     config->servers = 0;
 970
 971     config->confdir = wrbuf_alloc();
 972     if ((p = strrchr(fname,
 973 #ifdef WIN32
 974                      '\\'
 975 #else
 976                      '/'
 977 #endif
 978              )))
 979     {
 980         int len = p - fname;
 981         wrbuf_write(config->confdir, fname, len);
 982     }
 983     wrbuf_puts(config->confdir, "");
 984
 985     n = xmlDocGetRootElement(doc);
 986     r = process_config_includes(config, n);
 987     if (r == 0) /* OK */
 988     {
 989         if (verbose)
 990         {
 991             yaz_log(YLOG_LOG, "Configuration %s after include processing",
 992                     fname);
 993             xmlDocFormatDump(yaz_log_file(), doc, 0);
 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 }
1020
1021 void config_destroy(struct conf_config *config)
1022 {
1023     if (config)
1024     {
1025         struct conf_server *server = config->servers;
1026         while (server)
1027         {
1028             struct conf_server *s_next = server->next;
1029             server_destroy(server);
1030             server = s_next;
1031         }
1032         wrbuf_destroy(config->confdir);
1033         nmem_destroy(config->nmem);
1034     }
1035 }
1036
1037 void config_stop_listeners(struct conf_config *conf)
1038 {
1039     struct conf_server *ser;
1040     for (ser = conf->servers; ser; ser = ser->next)
1041         http_close_server(ser);
1042 }
1043
1044 void config_start_databases(struct conf_config *conf)
1045 {
1046     struct conf_server *ser;
1047     for (ser = conf->servers; ser; ser = ser->next)
1048     {
1049         struct conf_service *s = ser->service;
1050         for (;s ; s = s->next)
1051             resolve_databases(s);
1052     }
1053 }
1054
1055 int config_start_listeners(struct conf_config *conf,
1056                            const char *listener_override)
1057 {
1058     struct conf_server *ser;
1059     for (ser = conf->servers; ser; ser = ser->next)
1060     {
1061         WRBUF w = wrbuf_alloc();
1062         int r;
1063         if (listener_override)
1064         {
1065             wrbuf_puts(w, listener_override);
1066             listener_override = 0; /* only first server is overriden */
1067         }
1068         else
1069         {
1070             if (ser->host)
1071                 wrbuf_puts(w, ser->host);
1072             if (ser->port)
1073             {
1074                 if (wrbuf_len(w))
1075                     wrbuf_puts(w, ":");
1076                 wrbuf_printf(w, "%d", ser->port);
1077             }
1078         }
1079         r = http_init(wrbuf_cstr(w), ser);
1080         wrbuf_destroy(w);
1081         if (r)
1082             return -1;
1083
1084         w = wrbuf_alloc();
1085         if (ser->proxy_host || ser->proxy_port)
1086         {
1087             if (ser->proxy_host)
1088                 wrbuf_puts(w, ser->proxy_host);
1089             if (ser->proxy_port)
1090             {
1091                 if (wrbuf_len(w))
1092                     wrbuf_puts(w, ":");
1093                 wrbuf_printf(w, "%d", ser->proxy_port);
1094             }
1095         }
1096         if (wrbuf_len(w))
1097             http_set_proxyaddr(wrbuf_cstr(w), ser);
1098         wrbuf_destroy(w);
1099     }
1100     return 0;
1101 }
1102
1103 /*
1104  * Local variables:
1105  * c-basic-offset: 4
1106  * c-file-style: "Stroustrup"
1107  * indent-tabs-mode: nil
1108  * End:
1109  * vim: shiftwidth=4 tabstop=8 expandtab
1110  */
1111