src/pazpar2_config.c

   1 /* This file is part of Pazpar2.
   2    Copyright (C) 2006-2013 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 "service_xslt.h"
  45 #include "settings.h"
  46 #include "eventl.h"
  47 #include "http.h"
  48
  49 struct conf_config
  50 {
  51     NMEM nmem; /* for conf_config and servers memory */
  52     struct conf_server *servers;
  53
  54     int no_threads;
  55     WRBUF confdir;
  56     iochan_man_t iochan_man;
  57     database_hosts_t database_hosts;
  58 };
  59
  60 struct service_xslt
  61 {
  62     char *id;
  63     xsltStylesheetPtr xsp;
  64     struct service_xslt *next;
  65 };
  66
  67 struct conf_service *service_init(struct conf_server *server,
  68                                          int num_metadata, int num_sortkeys,
  69                                          const char *service_id)
  70 {
  71     struct conf_service * service = 0;
  72     NMEM nmem = nmem_create();
  73
  74
  75     service = nmem_malloc(nmem, sizeof(struct conf_service));
  76     service->mutex = 0;
  77     service->ref_count = 1;
  78     service->nmem = nmem;
  79     service->next = 0;
  80     service->databases = 0;
  81     service->xslt_list = 0;
  82     service->ccl_bibset = 0;
  83     service->server = server;
  84     service->session_timeout = 60; /* default session timeout */
  85     service->z3950_session_timeout = 180;
  86     service->z3950_operation_timeout = 30;
  87     service->rank_cluster = 1;
  88     service->rank_debug = 0;
  89     service->rank_follow = 0.0;
  90     service->rank_lead = 0.0;
  91     service->rank_length = 2;
  92
  93     service->charsets = 0;
  94
  95     service->id = service_id ? nmem_strdup(nmem, service_id) : 0;
  96
  97     // Setup a dictionary from server.
  98     service->dictionary = 0;
  99
 100     service->settings = nmem_malloc(nmem, sizeof(*service->settings));
 101     service->settings->num_settings = PZ_MAX_EOF;
 102     service->settings->settings = nmem_malloc(nmem, sizeof(struct setting*) * service->settings->num_settings);
 103     memset(service->settings->settings, 0, sizeof(struct setting*) * service->settings->num_settings);
 104     //  inherit_server_settings_values(service);
 105
 106     service->next = 0;
 107
 108     service->num_metadata = num_metadata;
 109
 110     service->metadata = 0;
 111     if (service->num_metadata)
 112         service->metadata
 113             = nmem_malloc(nmem,
 114                           sizeof(struct conf_metadata) * service->num_metadata);
 115     service->num_sortkeys = num_sortkeys;
 116
 117     service->default_sort = nmem_strdup(nmem, "relevance");
 118     service->sortkeys = 0;
 119     if (service->num_sortkeys)
 120         service->sortkeys
 121             = nmem_malloc(nmem,
 122                           sizeof(struct conf_sortkey) * service->num_sortkeys);
 123
 124
 125     return service;
 126 }
 127
 128 static struct conf_metadata* conf_service_add_metadata(
 129     struct conf_service *service,
 130     int field_id,
 131     const char *name,
 132     enum conf_metadata_type type,
 133     enum conf_metadata_merge merge,
 134     enum conf_setting_type setting,
 135     int brief,
 136     int termlist,
 137     const char *rank,
 138     int sortkey_offset,
 139     enum conf_metadata_mergekey mt,
 140     const char *facetrule,
 141     const char *limitmap,
 142     const char *limitcluster
 143     )
 144 {
 145     struct conf_metadata * md = 0;
 146     NMEM nmem = service->nmem;
 147
 148     if (!service->metadata || !service->num_metadata
 149         || field_id < 0  || !(field_id < service->num_metadata))
 150         return 0;
 151
 152     md = service->metadata + field_id;
 153     assert(nmem && md && name);
 154
 155     md->name = nmem_strdup(nmem, name);
 156
 157     md->type = type;
 158
 159     // enforcing that type_year is always range_merge
 160     if (md->type == Metadata_type_year)
 161         md->merge = Metadata_merge_range;
 162     else
 163         md->merge = merge;
 164
 165     md->setting = setting;
 166     md->brief = brief;
 167     md->termlist = termlist;
 168     md->rank = nmem_strdup_null(nmem, rank);
 169     md->sortkey_offset = sortkey_offset;
 170     md->mergekey = mt;
 171     md->facetrule = nmem_strdup_null(nmem, facetrule);
 172     md->limitmap = nmem_strdup_null(nmem, limitmap);
 173     md->limitcluster = nmem_strdup_null(nmem, limitcluster);
 174     return md;
 175 }
 176
 177 static struct conf_sortkey *conf_service_add_sortkey(
 178     struct conf_service *service,
 179     int field_id,
 180     const char *name,
 181     enum conf_sortkey_type type)
 182 {
 183     struct conf_sortkey *sk = 0;
 184     NMEM nmem = service->nmem;
 185
 186     if (!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
 192     assert(nmem && sk && name);
 193
 194     sk->name = nmem_strdup(nmem, name);
 195     sk->type = type;
 196     return sk;
 197 }
 198
 199 int conf_service_metadata_field_id(struct conf_service *service,
 200                                    const char * name)
 201 {
 202     int i = 0;
 203
 204     if (!service || !service->metadata || !service->num_metadata)
 205         return -1;
 206
 207     for (i = 0; i < service->num_metadata; i++)
 208         if (!strcmp(name, (service->metadata[i]).name))
 209             return i;
 210     return -1;
 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     return -1;
 225 }
 226
 227 static void conf_dir_path(struct conf_config *config, WRBUF w, const char *src)
 228 {
 229     if (config->confdir && wrbuf_len(config->confdir) > 0 &&
 230         !yaz_is_abspath(src))
 231     {
 232         wrbuf_printf(w, "%s/%s", wrbuf_cstr(config->confdir), src);
 233     }
 234     else
 235         wrbuf_puts(w, src);
 236 }
 237
 238 void service_destroy(struct conf_service *service)
 239 {
 240     if (service)
 241     {
 242         if (!pazpar2_decref(&service->ref_count, service->mutex))
 243         {
 244             service_xslt_destroy(service);
 245             pp2_charset_fact_destroy(service->charsets);
 246             ccl_qual_rm(&service->ccl_bibset);
 247             yaz_mutex_destroy(&service->mutex);
 248             nmem_destroy(service->nmem);
 249         }
 250     }
 251 }
 252
 253 void service_incref(struct conf_service *service)
 254 {
 255     yaz_log(YLOG_LOG, "service_incref. p=%p cnt=%d", service,
 256             service->ref_count);
 257     pazpar2_incref(&service->ref_count, service->mutex);
 258 }
 259
 260 static int parse_metadata(struct conf_service *service, xmlNode *n,
 261                           int *md_node, int *sk_node)
 262 {
 263     enum conf_metadata_type type = Metadata_type_generic;
 264     enum conf_metadata_merge merge = Metadata_merge_no;
 265     enum conf_setting_type setting = Metadata_setting_no;
 266     enum conf_metadata_mergekey mergekey_type = Metadata_mergekey_no;
 267     int brief = 0;
 268     int termlist = 0;
 269     int sortkey_offset = 0;
 270     xmlChar *xml_name = 0;
 271     xmlChar *xml_brief = 0;
 272     xmlChar *xml_sortkey = 0;
 273     xmlChar *xml_merge = 0;
 274     xmlChar *xml_type = 0;
 275     xmlChar *xml_termlist = 0;
 276     xmlChar *xml_rank = 0;
 277     xmlChar *xml_setting = 0;
 278     xmlChar *xml_mergekey = 0;
 279     xmlChar *xml_limitmap = 0;
 280     xmlChar *xml_limitcluster = 0;
 281     xmlChar *xml_icu_chain = 0;
 282
 283     struct _xmlAttr *attr;
 284
 285     assert(service);
 286
 287     for (attr = n->properties; attr; attr = attr->next)
 288     {
 289         if (!xmlStrcmp(attr->name, BAD_CAST "name") &&
 290             attr->children && attr->children->type == XML_TEXT_NODE)
 291             xml_name = attr->children->content;
 292         else if (!xmlStrcmp(attr->name, BAD_CAST "brief") &&
 293                  attr->children && attr->children->type == XML_TEXT_NODE)
 294             xml_brief = attr->children->content;
 295         else if (!xmlStrcmp(attr->name, BAD_CAST "sortkey") &&
 296                  attr->children && attr->children->type == XML_TEXT_NODE)
 297             xml_sortkey = attr->children->content;
 298         else if (!xmlStrcmp(attr->name, BAD_CAST "merge") &&
 299                  attr->children && attr->children->type == XML_TEXT_NODE)
 300             xml_merge = attr->children->content;
 301         else if (!xmlStrcmp(attr->name, BAD_CAST "type") &&
 302                  attr->children && attr->children->type == XML_TEXT_NODE)
 303             xml_type = attr->children->content;
 304         else if (!xmlStrcmp(attr->name, BAD_CAST "termlist") &&
 305                  attr->children && attr->children->type == XML_TEXT_NODE)
 306             xml_termlist = attr->children->content;
 307         else if (!xmlStrcmp(attr->name, BAD_CAST "rank") &&
 308                  attr->children && attr->children->type == XML_TEXT_NODE)
 309             xml_rank = attr->children->content;
 310         else if (!xmlStrcmp(attr->name, BAD_CAST "setting") &&
 311                  attr->children && attr->children->type == XML_TEXT_NODE)
 312             xml_setting = attr->children->content;
 313         else if (!xmlStrcmp(attr->name, BAD_CAST "mergekey") &&
 314                  attr->children && attr->children->type == XML_TEXT_NODE)
 315             xml_mergekey = attr->children->content;
 316         else if (!xmlStrcmp(attr->name, BAD_CAST "facetrule") &&
 317                  attr->children && attr->children->type == XML_TEXT_NODE)
 318             xml_icu_chain = attr->children->content;
 319         else if (!xmlStrcmp(attr->name, BAD_CAST "limitmap") &&
 320                  attr->children && attr->children->type == XML_TEXT_NODE)
 321             xml_limitmap = attr->children->content;
 322         else if (!xmlStrcmp(attr->name, BAD_CAST "limitcluster") &&
 323                  attr->children && attr->children->type == XML_TEXT_NODE)
 324             xml_limitcluster = attr->children->content;
 325         else
 326         {
 327             yaz_log(YLOG_FATAL, "Unknown metadata attribute '%s'", attr->name);
 328             return -1;
 329         }
 330     }
 331
 332     // now do the parsing logic
 333     if (!xml_name)
 334     {
 335         yaz_log(YLOG_FATAL, "Must specify name in metadata element");
 336         return -1;
 337     }
 338     if (xml_brief)
 339     {
 340         if (!strcmp((const char *) xml_brief, "yes"))
 341             brief = 1;
 342         else if (strcmp((const char *) xml_brief, "no"))
 343         {
 344             yaz_log(YLOG_FATAL, "metadata/brief must be yes or no");
 345             return -1;
 346         }
 347     }
 348
 349     if (xml_termlist)
 350     {
 351         if (!strcmp((const char *) xml_termlist, "yes"))
 352             termlist = 1;
 353         else if (strcmp((const char *) xml_termlist, "no"))
 354         {
 355             yaz_log(YLOG_FATAL, "metadata/termlist must be yes or no");
 356             return -1;
 357         }
 358     }
 359
 360     if (xml_type)
 361     {
 362         if (!strcmp((const char *) xml_type, "generic"))
 363             type = Metadata_type_generic;
 364         else if (!strcmp((const char *) xml_type, "year"))
 365             type = Metadata_type_year;
 366         else if (!strcmp((const char *) xml_type, "date"))
 367             type = Metadata_type_date;
 368         else
 369         {
 370             yaz_log(YLOG_FATAL,
 371                     "Unknown value for metadata/type: %s", xml_type);
 372             return -1;
 373         }
 374     }
 375
 376     if (xml_merge)
 377     {
 378         if (!strcmp((const char *) xml_merge, "no"))
 379             merge = Metadata_merge_no;
 380         else if (!strcmp((const char *) xml_merge, "unique"))
 381             merge = Metadata_merge_unique;
 382         else if (!strcmp((const char *) xml_merge, "longest"))
 383             merge = Metadata_merge_longest;
 384         else if (!strcmp((const char *) xml_merge, "range"))
 385             merge = Metadata_merge_range;
 386         else if (!strcmp((const char *) xml_merge, "all"))
 387             merge = Metadata_merge_all;
 388         else if (!strcmp((const char *) xml_merge, "first"))
 389             merge = Metadata_merge_first;
 390         else
 391         {
 392             yaz_log(YLOG_FATAL,
 393                     "Unknown value for metadata/merge: %s", xml_merge);
 394             return -1;
 395         }
 396     }
 397
 398     if (xml_setting)
 399     {
 400         if (!strcmp((const char *) xml_setting, "no"))
 401             setting = Metadata_setting_no;
 402         else if (!strcmp((const char *) xml_setting, "postproc"))
 403             setting = Metadata_setting_postproc;
 404         else if (!strcmp((const char *) xml_setting, "parameter"))
 405             setting = Metadata_setting_parameter;
 406         else
 407         {
 408             yaz_log(YLOG_FATAL,
 409                     "Unknown value for medadata/setting: %s", xml_setting);
 410             return -1;
 411         }
 412     }
 413
 414     // add a sortkey if so specified
 415     if (xml_sortkey && strcmp((const char *) xml_sortkey, "no"))
 416     {
 417         enum conf_sortkey_type sk_type;
 418         if (merge == Metadata_merge_no)
 419         {
 420             yaz_log(YLOG_FATAL,
 421                     "Can't specify sortkey on a non-merged field");
 422             return -1;
 423         }
 424         if (!strcmp((const char *) xml_sortkey, "numeric"))
 425             sk_type = Metadata_sortkey_numeric;
 426         else if (!strcmp((const char *) xml_sortkey, "skiparticle"))
 427             sk_type = Metadata_sortkey_skiparticle;
 428         else
 429         {
 430             yaz_log(YLOG_FATAL,
 431                     "Unknown sortkey in metadata element: %s",
 432                     xml_sortkey);
 433             return -1;
 434         }
 435         sortkey_offset = *sk_node;
 436
 437         conf_service_add_sortkey(service, *sk_node,
 438                                  (const char *) xml_name, sk_type);
 439         (*sk_node)++;
 440     }
 441     else
 442         sortkey_offset = -1;
 443
 444     if (xml_mergekey)
 445     {
 446         if (!strcmp((const char *) xml_mergekey, "required"))
 447             mergekey_type = Metadata_mergekey_required;
 448         else if (!strcmp((const char *) xml_mergekey, "optional"))
 449             mergekey_type = Metadata_mergekey_optional;
 450         else if (!strcmp((const char *) xml_mergekey, "no"))
 451             mergekey_type = Metadata_mergekey_no;
 452         else
 453         {
 454             yaz_log(YLOG_FATAL, "Unknown value for mergekey: %s", xml_mergekey);
 455             return -1;
 456         }
 457     }
 458
 459     // metadata known, assign values
 460     conf_service_add_metadata(service, *md_node,
 461                               (const char *) xml_name,
 462                               type, merge, setting,
 463                               brief, termlist,
 464                               (const char *) xml_rank, sortkey_offset,
 465                               mergekey_type,
 466                               (const char *) xml_icu_chain,
 467                               (const char *) xml_limitmap,
 468                               (const char *) xml_limitcluster);
 469     (*md_node)++;
 470     return 0;
 471 }
 472
 473 static struct conf_service *service_create_static(struct conf_server *server,
 474                                                   xmlNode *node,
 475                                                   const char *service_id)
 476 {
 477     xmlNode *n;
 478     int md_node = 0;
 479     int sk_node = 0;
 480
 481     struct conf_service *service = 0;
 482     int num_metadata = 0;
 483     int num_sortkeys = 0;
 484     int got_settings = 0;
 485
 486     // count num_metadata and num_sortkeys
 487     for (n = node->children; n; n = n->next)
 488         if (n->type == XML_ELEMENT_NODE && !strcmp((const char *)
 489                                                    n->name, "metadata"))
 490         {
 491             xmlChar *sortkey = xmlGetProp(n, (xmlChar *) "sortkey");
 492             num_metadata++;
 493             if (sortkey && strcmp((const char *) sortkey, "no"))
 494                 num_sortkeys++;
 495             xmlFree(sortkey);
 496         }
 497
 498     service = service_init(server, num_metadata, num_sortkeys, service_id);
 499
 500     for (n = node->children; n; n = n->next)
 501     {
 502         if (n->type != XML_ELEMENT_NODE)
 503             continue;
 504         if (!strcmp((const char *) n->name, "timeout"))
 505         {
 506             xmlChar *src = xmlGetProp(n, (xmlChar *) "session");
 507             if (src)
 508             {
 509                 service->session_timeout = atoi((const char *) src);
 510                 xmlFree(src);
 511                 if (service->session_timeout < 9)
 512                 {
 513                     yaz_log(YLOG_FATAL, "session timeout out of range");
 514                     return 0;
 515                 }
 516             }
 517             src = xmlGetProp(n, (xmlChar *) "z3950_operation");
 518             if (src)
 519             {
 520                 service->z3950_operation_timeout = atoi((const char *) src);
 521                 xmlFree(src);
 522                 if (service->z3950_session_timeout < 9)
 523                 {
 524                     yaz_log(YLOG_FATAL, "Z39.50 operation timeout out of range");
 525                     return 0;
 526                 }
 527             }
 528             src = xmlGetProp(n, (xmlChar *) "z3950_session");
 529             if (src)
 530             {
 531                 service->z3950_session_timeout = atoi((const char *) src);
 532                 xmlFree(src);
 533                 if (service->z3950_session_timeout < 9)
 534                 {
 535                     yaz_log(YLOG_FATAL, "Z39.50 session timeout out of range");
 536                     return 0;
 537                 }
 538             }
 539         }
 540         else if (!strcmp((const char *) n->name, "ccldirective"))
 541         {
 542             char *name;
 543             char *value;
 544             if (!service->ccl_bibset)
 545                 service->ccl_bibset = ccl_qual_mk();
 546             name = (char *) xmlGetProp(n, (xmlChar *) "name");
 547             if (!name)
 548             {
 549                 yaz_log(YLOG_FATAL, "ccldirective: missing @name");
 550                 return 0;
 551             }
 552             value = (char *) xmlGetProp(n, (xmlChar *) "value");
 553             if (!value)
 554             {
 555                 xmlFree(name);
 556                 yaz_log(YLOG_FATAL, "ccldirective: missing @value");
 557                 return 0;
 558             }
 559             ccl_qual_add_special(service->ccl_bibset, name, value);
 560             xmlFree(value);
 561             xmlFree(name);
 562         }
 563         else if (!strcmp((const char *) n->name, "settings"))
 564             got_settings++;
 565         else if (!strcmp((const char *) n->name, "icu_chain"))
 566         {
 567             if (!service->charsets)
 568                 service->charsets = pp2_charset_fact_create();
 569             if (pp2_charset_fact_define(service->charsets, n, 0))
 570             {
 571                 yaz_log(YLOG_FATAL, "ICU chain definition error");
 572                 return 0;
 573             }
 574         }
 575         else if (!strcmp((const char *) n->name, "relevance")
 576                  || !strcmp((const char *) n->name, "sort")
 577                  || !strcmp((const char *) n->name, "mergekey")
 578                  || !strcmp((const char *) n->name, "facet"))
 579
 580         {
 581             if (!service->charsets)
 582                 service->charsets = pp2_charset_fact_create();
 583             if (pp2_charset_fact_define(service->charsets,
 584                                         n->children, (const char *) n->name))
 585             {
 586                 yaz_log(YLOG_FATAL, "ICU chain definition error");
 587                 return 0;
 588             }
 589         }
 590         else if (!strcmp((const char *) n->name, (const char *) "metadata"))
 591         {
 592             if (parse_metadata(service, n, &md_node, &sk_node))
 593                 return 0;
 594         }
 595         else if (!strcmp((const char *) n->name, (const char *) "xslt"))
 596         {
 597             if (service_xslt_config(service, n))
 598                 return 0;
 599         }
 600         else if (!strcmp((const char *) n->name, (const char *) "set"))
 601         {
 602             xmlChar *name= xmlGetProp(n, (xmlChar *) "name");
 603             xmlChar *value = xmlGetProp(n, (xmlChar *) "value");
 604             if (service->dictionary && name && value) {
 605                 yaz_log(YLOG_DEBUG, "service set: %s=%s (Not implemented)", (char *) name, (char *) value);
 606                 //service_aply_setting(service, name, value);
 607             }
 608         }
 609         else if (!strcmp((const char *) n->name, "rank"))
 610         {
 611             char *rank_cluster = (char *) xmlGetProp(n, (xmlChar *) "cluster");
 612             char *rank_debug = (char *) xmlGetProp(n, (xmlChar *) "debug");
 613             char *rank_follow = (char *) xmlGetProp(n, (xmlChar *) "follow");
 614             char *rank_lead = (char *) xmlGetProp(n, (xmlChar *) "lead");
 615             char *rank_length= (char *) xmlGetProp(n, (xmlChar *) "length");
 616             if (rank_cluster)
 617             {
 618                 if (!strcmp(rank_cluster, "yes"))
 619                     service->rank_cluster = 1;
 620                 else if (!strcmp(rank_cluster, "no"))
 621                     service->rank_cluster = 0;
 622                 else
 623                 {
 624                     yaz_log(YLOG_FATAL, "service: rank@cluster boolean");
 625                     return 0;
 626                 }
 627             }
 628             if (rank_debug)
 629             {
 630                 if (!strcmp(rank_debug, "yes"))
 631                     service->rank_debug = 1;
 632                 else if (!strcmp(rank_debug, "no"))
 633                     service->rank_debug = 0;
 634                 else
 635                 {
 636                     yaz_log(YLOG_FATAL, "service: rank@debug boolean");
 637                     return 0;
 638                 }
 639             }
 640             if (rank_follow)
 641             {
 642                 service->rank_follow = atof(rank_follow);
 643             }
 644             if (rank_lead)
 645             {
 646                 service->rank_lead = atof(rank_lead);
 647             }
 648             if (rank_length)
 649             {
 650                 if (!strcmp(rank_length, "linear"))
 651                     service->rank_length = 2;
 652                 else if (!strcmp(rank_length, "log"))
 653                     service->rank_length = 1;
 654                 else if (!strcmp(rank_length, "none"))
 655                     service->rank_length = 0;
 656                 else
 657                 {
 658                     yaz_log(YLOG_FATAL, "service: rank@length linear|log|none");
 659                     return 0;
 660                 }
 661             }
 662             xmlFree(rank_cluster);
 663             xmlFree(rank_debug);
 664             xmlFree(rank_follow);
 665             xmlFree(rank_lead);
 666             xmlFree(rank_length);
 667         }
 668         else if (!strcmp((const char *) n->name, "sort-default"))
 669         {
 670             char *default_sort = (char *) xmlGetProp(n, (xmlChar *) "field");
 671
 672             if (default_sort && strcmp(default_sort, "")) {
 673                 service->default_sort = nmem_strdup(service->nmem, default_sort);
 674                 yaz_log(YLOG_LOG, "service %s: default sort order configured to: %s",
 675                         service_id ? service_id : "unnamed", default_sort);
 676             }
 677             else
 678             {
 679                 yaz_log(YLOG_FATAL, "default sort order is invalid: %s", default_sort);
 680                 return 0;
 681             }
 682             xmlFree(default_sort);
 683         }
 684         else
 685         {
 686             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 687             return 0;
 688         }
 689     }
 690     if (got_settings)
 691     {
 692         int pass;
 693         /* metadata has been read.. Consider now settings */
 694         init_settings(service);
 695         for (pass = 1; pass <= 2; pass++)
 696         {
 697             for (n = node->children; n; n = n->next)
 698             {
 699                 if (n->type != XML_ELEMENT_NODE)
 700                     continue;
 701                 if (!strcmp((const char *) n->name, "settings"))
 702                 {
 703                     int ret;
 704                     xmlChar *src = xmlGetProp(n, (xmlChar *) "src");
 705                     if (src)
 706                     {
 707                         WRBUF w = wrbuf_alloc();
 708                         conf_dir_path(server->config, w, (const char *) src);
 709                         ret = settings_read_file(service, wrbuf_cstr(w), pass);
 710                         wrbuf_destroy(w);
 711                         xmlFree(src);
 712                     }
 713                     else
 714                     {
 715                         ret = settings_read_node(service, n, pass);
 716                     }
 717                     if (ret)
 718                         return 0;
 719                 }
 720             }
 721         }
 722     }
 723     return service;
 724 }
 725
 726 static int inherit_server_settings(struct conf_service *s)
 727 {
 728     int ret = 0;
 729     struct conf_server *server = s->server;
 730     if (!s->dictionary) /* service has no config settings ? */
 731     {
 732         if (server->settings_fname)
 733         {
 734             /* inherit settings from server */
 735             init_settings(s);
 736             if (settings_read_file(s, server->settings_fname, 1))
 737                 ret = -1;
 738             if (settings_read_file(s, server->settings_fname, 2))
 739                 ret = -1;
 740         }
 741         else
 742         {
 743             yaz_log(YLOG_WARN, "server '%s' has no settings", s->id ? s->id : "unnamed");
 744             init_settings(s);
 745         }
 746     }
 747
 748     /* use relevance/sort/mergekey/facet from server if not defined
 749        for this service.. */
 750     if (!s->charsets)
 751     {
 752         if (server->charsets)
 753         {
 754             s->charsets = server->charsets;
 755             pp2_charset_fact_incref(s->charsets);
 756         }
 757         else
 758         {
 759             s->charsets = pp2_charset_fact_create();
 760         }
 761     }
 762     return ret;
 763 }
 764
 765 struct conf_service *service_create(struct conf_server *server,
 766                                     xmlNode *node)
 767 {
 768     struct conf_service *service = service_create_static(server, node, 0);
 769     if (service)
 770     {
 771         inherit_server_settings(service);
 772         assert(service->mutex == 0);
 773         pazpar2_mutex_create(&service->mutex, "conf");
 774     }
 775     return service;
 776 }
 777
 778 static struct conf_server *server_create(struct conf_config *config,
 779                                          NMEM nmem, xmlNode *node)
 780 {
 781     xmlNode *n;
 782     struct conf_server *server = nmem_malloc(nmem, sizeof(struct conf_server));
 783     xmlChar *server_id = xmlGetProp(node, (xmlChar *) "id");
 784
 785     server->host = "@";
 786     server->port = 0;
 787     server->proxy_host = 0;
 788     server->proxy_port = 0;
 789     server->myurl = 0;
 790     server->service = 0;
 791     server->config = config;
 792     server->next = 0;
 793     server->charsets = 0;
 794     server->http_server = 0;
 795     server->iochan_man = 0;
 796     server->database_hosts = config->database_hosts;
 797     server->settings_fname = 0;
 798
 799     if (server_id)
 800     {
 801         server->server_id = nmem_strdup(nmem, (const char *)server_id);
 802         xmlFree(server_id);
 803     }
 804     else
 805         server->server_id = 0;
 806     for (n = node->children; n; n = n->next)
 807     {
 808         if (n->type != XML_ELEMENT_NODE)
 809             continue;
 810         if (!strcmp((const char *) n->name, "listen"))
 811         {
 812             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 813             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 814
 815             if (port)
 816                 server->port = nmem_strdup(nmem, (const char *) port);
 817             if (host)
 818                 server->host = nmem_strdup(nmem, (const char *) host);
 819
 820             xmlFree(port);
 821             xmlFree(host);
 822         }
 823         else if (!strcmp((const char *) n->name, "proxy"))
 824         {
 825             xmlChar *port = xmlGetProp(n, (xmlChar *) "port");
 826             xmlChar *host = xmlGetProp(n, (xmlChar *) "host");
 827             xmlChar *myurl = xmlGetProp(n, (xmlChar *) "myurl");
 828             if (port)
 829                 server->proxy_port = atoi((const char *) port);
 830             if (host)
 831                 server->proxy_host = nmem_strdup(nmem, (const char *) host);
 832             if (myurl)
 833                 server->myurl = nmem_strdup(nmem, (const char *) myurl);
 834             xmlFree(port);
 835             xmlFree(host);
 836             xmlFree(myurl);
 837         }
 838         else if (!strcmp((const char *) n->name, "settings"))
 839         {
 840             xmlChar *src = xmlGetProp(n, (xmlChar *) "src");
 841             WRBUF w;
 842             if (!src)
 843             {
 844                 yaz_log(YLOG_FATAL, "Missing src attribute for settings");
 845                 return 0;
 846             }
 847             if (server->settings_fname)
 848             {
 849                 xmlFree(src);
 850                 yaz_log(YLOG_FATAL, "Can't repeat 'settings'");
 851                 return 0;
 852             }
 853             w = wrbuf_alloc();
 854             conf_dir_path(config, w, (const char *) src);
 855             server->settings_fname = nmem_strdup(nmem, wrbuf_cstr(w));
 856             wrbuf_destroy(w);
 857             xmlFree(src);
 858         }
 859         else if (!strcmp((const char *) n->name, "icu_chain"))
 860         {
 861             if (!server->charsets)
 862                 server->charsets = pp2_charset_fact_create();
 863             if (pp2_charset_fact_define(server->charsets, n, 0))
 864             {
 865                 yaz_log(YLOG_FATAL, "ICU chain definition error");
 866                 return 0;
 867             }
 868         }
 869         else if (!strcmp((const char *) n->name, "relevance")
 870                  || !strcmp((const char *) n->name, "sort")
 871                  || !strcmp((const char *) n->name, "mergekey")
 872                  || !strcmp((const char *) n->name, "facet"))
 873         {
 874             if (!server->charsets)
 875                 server->charsets = pp2_charset_fact_create();
 876             if (pp2_charset_fact_define(server->charsets,
 877                                         n->children, (const char *) n->name))
 878             {
 879                 yaz_log(YLOG_FATAL, "ICU chain definition error");
 880                 return 0;
 881             }
 882         }
 883         else if (!strcmp((const char *) n->name, "service"))
 884         {
 885             char *service_id = (char *)
 886                 xmlGetProp(n, (xmlChar *) "id");
 887
 888             struct conf_service **sp = &server->service;
 889             for (; *sp; sp = &(*sp)->next)
 890                 if ((*sp)->id && service_id &&
 891                     0 == strcmp((*sp)->id, service_id))
 892                 {
 893                     yaz_log(YLOG_FATAL, "Duplicate service: %s", service_id);
 894                     break;
 895                 }
 896                 else if (!(*sp)->id && !service_id)
 897                 {
 898                     yaz_log(YLOG_FATAL, "Duplicate unnamed service");
 899                     break;
 900                 }
 901
 902             if (*sp)  /* service already exist */
 903             {
 904                 xmlFree(service_id);
 905                 return 0;
 906             }
 907             else
 908             {
 909                 struct conf_service *s = service_create_static(server, n,
 910                                                                service_id);
 911                 xmlFree(service_id);
 912                 if (!s)
 913                     return 0;
 914                 *sp = s;
 915             }
 916         }
 917         else
 918         {
 919             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
 920             return 0;
 921         }
 922     }
 923     if (!server->port)
 924     {
 925         yaz_log(YLOG_FATAL, "No listening port given");
 926         return 0;
 927     }
 928     if (server->service)
 929     {
 930         struct conf_service *s;
 931         for (s = server->service; s; s = s->next)
 932             inherit_server_settings(s);
 933     }
 934     return server;
 935 }
 936
 937 WRBUF conf_get_fname(struct conf_config *config, const char *fname)
 938 {
 939     WRBUF w = wrbuf_alloc();
 940
 941     conf_dir_path(config, w, fname);
 942     return w;
 943 }
 944
 945 struct conf_service *locate_service(struct conf_server *server,
 946                                     const char *service_id)
 947 {
 948     struct conf_service *s = server->service;
 949     for (; s; s = s->next)
 950         if (s->id && service_id && 0 == strcmp(s->id, service_id))
 951             break;
 952         else if (!s->id && !service_id)
 953             break;
 954     if (s)
 955         service_incref(s);
 956     return s;
 957 }
 958
 959 void info_services(struct conf_server *server, WRBUF w)
 960 {
 961     struct conf_service *s = server->service;
 962     wrbuf_puts(w, " <services>\n");
 963     for (; s; s = s->next)
 964     {
 965         wrbuf_puts(w, "  <service");
 966         if (s->id)
 967         {
 968             wrbuf_puts(w, " id=\"");
 969             wrbuf_xmlputs(w, s->id);
 970             wrbuf_puts(w, "\"");
 971         }
 972         wrbuf_puts(w, "/>");
 973
 974         wrbuf_puts(w, "\n");
 975     }
 976     wrbuf_puts(w, " </services>\n");
 977 }
 978
 979 static int parse_config(struct conf_config *config, xmlNode *root)
 980 {
 981     xmlNode *n;
 982
 983     for (n = root->children; n; n = n->next)
 984     {
 985         if (n->type != XML_ELEMENT_NODE)
 986             continue;
 987         if (!strcmp((const char *) n->name, "server"))
 988         {
 989             struct conf_server *tmp = server_create(config, config->nmem, n);
 990             if (!tmp)
 991                 return -1;
 992             tmp->next = config->servers;
 993             config->servers = tmp;
 994         }
 995         else if (!strcmp((const char *) n->name, "threads"))
 996         {
 997             xmlChar *number = xmlGetProp(n, (xmlChar *) "number");
 998             if (number)
 999             {
1000                 config->no_threads = atoi((const char *) number);
1001                 xmlFree(number);
1002             }
1003         }
1004         else if (!strcmp((const char *) n->name, "targetprofiles"))
1005         {
1006             yaz_log(YLOG_FATAL, "targetprofiles unsupported here. Must be part of service");
1007             return -1;
1008
1009         }
1010         else
1011         {
1012             yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
1013             return -1;
1014         }
1015     }
1016     return 0;
1017 }
1018
1019 struct conf_config *config_create(const char *fname, int verbose)
1020 {
1021     xmlDoc *doc = xmlParseFile(fname);
1022     xmlNode *n;
1023     const char *p;
1024     int r;
1025     NMEM nmem = nmem_create();
1026     struct conf_config *config = nmem_malloc(nmem, sizeof(struct conf_config));
1027
1028     xmlSubstituteEntitiesDefault(1);
1029     xmlLoadExtDtdDefaultValue = 1;
1030     if (!doc)
1031     {
1032         yaz_log(YLOG_FATAL, "Failed to read %s", fname);
1033         nmem_destroy(nmem);
1034         return 0;
1035     }
1036
1037     config->nmem = nmem;
1038     config->servers = 0;
1039     config->no_threads = 0;
1040     config->iochan_man = 0;
1041     config->database_hosts = database_hosts_create();
1042
1043     config->confdir = wrbuf_alloc();
1044     if ((p = strrchr(fname,
1045 #ifdef WIN32
1046                      '\\'
1047 #else
1048                      '/'
1049 #endif
1050              )))
1051     {
1052         int len = p - fname;
1053         wrbuf_write(config->confdir, fname, len);
1054     }
1055     wrbuf_puts(config->confdir, "");
1056
1057     n = xmlDocGetRootElement(doc);
1058     r = yaz_xml_include_simple(n, wrbuf_cstr(config->confdir));
1059     if (r == 0) /* OK */
1060     {
1061         if (verbose)
1062         {
1063             yaz_log(YLOG_LOG, "Configuration %s after include processing",
1064                     fname);
1065 #if LIBXML_VERSION >= 20600
1066             xmlDocFormatDump(yaz_log_file(), doc, 0);
1067 #else
1068             xmlDocDump(yaz_log_file(), doc);
1069 #endif
1070         }
1071         r = parse_config(config, n);
1072     }
1073     xmlFreeDoc(doc);
1074
1075     if (r)
1076     {
1077         config_destroy(config);
1078         return 0;
1079     }
1080     return config;
1081 }
1082
1083 void server_destroy(struct conf_server *server)
1084 {
1085     struct conf_service *s = server->service;
1086     while (s)
1087     {
1088         struct conf_service *s_next = s->next;
1089         service_destroy(s);
1090         s = s_next;
1091     }
1092     pp2_charset_fact_destroy(server->charsets);
1093     yaz_log(YLOG_LOG, "server_destroy server=%p", server);
1094     http_server_destroy(server->http_server);
1095 }
1096
1097 void config_destroy(struct conf_config *config)
1098 {
1099     if (config)
1100     {
1101         struct conf_server *server = config->servers;
1102         iochan_man_destroy(&config->iochan_man);
1103         while (server)
1104         {
1105             struct conf_server *s_next = server->next;
1106             server_destroy(server);
1107             server = s_next;
1108             database_hosts_destroy(&config->database_hosts);
1109         }
1110         wrbuf_destroy(config->confdir);
1111         nmem_destroy(config->nmem);
1112     }
1113 }
1114
1115 void config_stop_listeners(struct conf_config *conf)
1116 {
1117     struct conf_server *ser;
1118     for (ser = conf->servers; ser; ser = ser->next)
1119         http_close_server(ser);
1120 }
1121
1122 void config_process_events(struct conf_config *conf)
1123 {
1124     struct conf_server *ser;
1125
1126     for (ser = conf->servers; ser; ser = ser->next)
1127     {
1128         struct conf_service *s = ser->service;
1129
1130         for (;s ; s = s->next)
1131         {
1132             assert(s->mutex == 0);
1133             pazpar2_mutex_create(&s->mutex, "service");
1134         }
1135         http_mutex_init(ser);
1136     }
1137     iochan_man_events(conf->iochan_man);
1138 }
1139
1140 int config_start_listeners(struct conf_config *conf,
1141                            const char *listener_override,
1142                            const char *record_fname)
1143 {
1144     struct conf_server *ser;
1145
1146     conf->iochan_man = iochan_man_create(conf->no_threads);
1147     for (ser = conf->servers; ser; ser = ser->next)
1148     {
1149         WRBUF w;
1150         int r;
1151
1152         ser->iochan_man = conf->iochan_man;
1153         if (listener_override)
1154         {
1155             const char *cp = strrchr(listener_override, ':');
1156             if (cp)
1157             {
1158                 ser->host = nmem_strdupn(conf->nmem, listener_override,
1159                                          cp - listener_override);
1160                 ser->port = nmem_strdup(conf->nmem, cp + 1);
1161             }
1162             else
1163             {
1164                 ser->host = "@";
1165                 ser->port = nmem_strdup(conf->nmem, listener_override);
1166             }
1167             listener_override = 0; /* only first server is overriden */
1168         }
1169         r = http_init(ser, record_fname);
1170         if (r)
1171             return -1;
1172
1173         w = wrbuf_alloc();
1174         if (ser->proxy_host || ser->proxy_port)
1175         {
1176             if (ser->proxy_host)
1177                 wrbuf_puts(w, ser->proxy_host);
1178             if (ser->proxy_port)
1179             {
1180                 if (wrbuf_len(w))
1181                     wrbuf_puts(w, ":");
1182                 wrbuf_printf(w, "%d", ser->proxy_port);
1183             }
1184         }
1185         if (wrbuf_len(w))
1186             http_set_proxyaddr(wrbuf_cstr(w), ser);
1187         wrbuf_destroy(w);
1188     }
1189     return 0;
1190 }
1191
1192 /*
1193  * Local variables:
1194  * c-basic-offset: 4
1195  * c-file-style: "Stroustrup"
1196  * indent-tabs-mode: nil
1197  * End:
1198  * vim: shiftwidth=4 tabstop=8 expandtab
1199  */
1200