src/zoom-c.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2013 Index Data
   3  * See the file LICENSE for details.
   4  */
   5 /**
   6  * \file zoom-c.c
   7  * \brief Implements ZOOM C interface.
   8  */
   9 #if HAVE_CONFIG_H
  10 #include <config.h>
  11 #endif
  12
  13 #include <assert.h>
  14 #include <string.h>
  15 #include <errno.h>
  16 #include "zoom-p.h"
  17
  18 #include <yaz/yaz-util.h>
  19 #include <yaz/xmalloc.h>
  20 #include <yaz/otherinfo.h>
  21 #include <yaz/log.h>
  22 #include <yaz/diagbib1.h>
  23 #include <yaz/charneg.h>
  24 #include <yaz/query-charset.h>
  25 #include <yaz/snprintf.h>
  26 #include <yaz/facet.h>
  27
  28 #include <yaz/shptr.h>
  29
  30 #if SHPTR
  31 YAZ_SHPTR_TYPE(WRBUF)
  32 #endif
  33
  34 static int log_api0 = 0;
  35 static int log_details0 = 0;
  36
  37 static void resultset_destroy(ZOOM_resultset r);
  38 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  39
  40 static void initlog(void)
  41 {
  42     static int log_level_initialized = 0;
  43
  44     if (!log_level_initialized)
  45     {
  46         log_api0 = yaz_log_module_level("zoom");
  47         log_details0 = yaz_log_module_level("zoomdetails");
  48         log_level_initialized = 1;
  49     }
  50 }
  51
  52 void ZOOM_connection_remove_tasks(ZOOM_connection c);
  53
  54 void ZOOM_set_dset_error(ZOOM_connection c, int error,
  55                          const char *dset,
  56                          const char *addinfo, const char *addinfo2)
  57 {
  58     char *cp;
  59
  60     xfree(c->addinfo);
  61     c->addinfo = 0;
  62     c->error = error;
  63     if (!c->diagset || strcmp(dset, c->diagset))
  64     {
  65         xfree(c->diagset);
  66         c->diagset = xstrdup(dset);
  67         /* remove integer part from SRW diagset .. */
  68         if ((cp = strrchr(c->diagset, '/')))
  69             *cp = '\0';
  70     }
  71     if (addinfo && addinfo2)
  72     {
  73         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 3);
  74         strcpy(c->addinfo, addinfo);
  75         strcat(c->addinfo, ": ");
  76         strcat(c->addinfo, addinfo2);
  77     }
  78     else if (addinfo)
  79         c->addinfo = xstrdup(addinfo);
  80     if (error != ZOOM_ERROR_NONE)
  81     {
  82         yaz_log(c->log_api, "%p set_dset_error %s %s:%d %s %s",
  83                 c, c->host_port ? c->host_port : "<>", dset, error,
  84                 addinfo ? addinfo : "",
  85                 addinfo2 ? addinfo2 : "");
  86         ZOOM_connection_remove_tasks(c);
  87     }
  88 }
  89
  90 int ZOOM_uri_to_code(const char *uri)
  91 {
  92     int code = 0;
  93     const char *cp;
  94     if ((cp = strrchr(uri, '/')))
  95         code = atoi(cp+1);
  96     return code;
  97 }
  98
  99
 100
 101 void ZOOM_set_error(ZOOM_connection c, int error, const char *addinfo)
 102 {
 103     ZOOM_set_dset_error(c, error, "ZOOM", addinfo, 0);
 104 }
 105
 106 static void clear_error(ZOOM_connection c)
 107 {
 108     /*
 109      * If an error is tied to an operation then it's ok to clear: for
 110      * example, a diagnostic returned from a search is cleared by a
 111      * subsequent search.  However, problems such as Connection Lost
 112      * or Init Refused are not cleared, because they are not
 113      * recoverable: doing another search doesn't help.
 114      */
 115
 116     ZOOM_connection_remove_events(c);
 117     switch (c->error)
 118     {
 119     case ZOOM_ERROR_CONNECT:
 120     case ZOOM_ERROR_MEMORY:
 121     case ZOOM_ERROR_DECODE:
 122     case ZOOM_ERROR_CONNECTION_LOST:
 123     case ZOOM_ERROR_INIT:
 124     case ZOOM_ERROR_INTERNAL:
 125     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 126         break;
 127     default:
 128         ZOOM_set_error(c, ZOOM_ERROR_NONE, 0);
 129     }
 130 }
 131
 132 void ZOOM_connection_show_task(ZOOM_task task)
 133 {
 134     switch(task->which)
 135     {
 136     case ZOOM_TASK_SEARCH:
 137         yaz_log(YLOG_LOG, "search p=%p", task);
 138         break;
 139     case ZOOM_TASK_RETRIEVE:
 140         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 141         break;
 142     case ZOOM_TASK_CONNECT:
 143         yaz_log(YLOG_LOG, "connect p=%p", task);
 144         break;
 145     case ZOOM_TASK_SCAN:
 146         yaz_log(YLOG_LOG, "scan p=%p", task);
 147         break;
 148     }
 149 }
 150
 151 void ZOOM_connection_show_tasks(ZOOM_connection c)
 152 {
 153     ZOOM_task task;
 154     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 155     for (task = c->tasks; task; task = task->next)
 156         ZOOM_connection_show_task(task);
 157 }
 158
 159 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 160 {
 161     ZOOM_task *taskp = &c->tasks;
 162     while (*taskp)
 163         taskp = &(*taskp)->next;
 164     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 165     (*taskp)->running = 0;
 166     (*taskp)->which = which;
 167     (*taskp)->next = 0;
 168     clear_error(c);
 169     return *taskp;
 170 }
 171
 172 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 173 {
 174     return c->tasks ? 0 : 1;
 175 }
 176
 177 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 178 {
 179     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 180
 181     task->next = c->tasks;
 182     c->tasks = task;
 183
 184     task->running = 0;
 185     task->which = which;
 186     return task;
 187 }
 188
 189 void ZOOM_connection_remove_task(ZOOM_connection c)
 190 {
 191     ZOOM_task task = c->tasks;
 192
 193     if (task)
 194     {
 195         c->tasks = task->next;
 196         switch (task->which)
 197         {
 198         case ZOOM_TASK_SEARCH:
 199             resultset_destroy(task->u.search.resultset);
 200             xfree(task->u.search.syntax);
 201             xfree(task->u.search.elementSetName);
 202             xfree(task->u.search.schema);
 203             break;
 204         case ZOOM_TASK_RETRIEVE:
 205             resultset_destroy(task->u.retrieve.resultset);
 206             xfree(task->u.retrieve.syntax);
 207             xfree(task->u.retrieve.elementSetName);
 208             xfree(task->u.retrieve.schema);
 209             break;
 210         case ZOOM_TASK_CONNECT:
 211             break;
 212         case ZOOM_TASK_SCAN:
 213             ZOOM_scanset_destroy(task->u.scan.scan);
 214             break;
 215         case ZOOM_TASK_PACKAGE:
 216             ZOOM_package_destroy(task->u.package);
 217             break;
 218         case ZOOM_TASK_SORT:
 219             resultset_destroy(task->u.sort.resultset);
 220             ZOOM_query_destroy(task->u.sort.q);
 221             break;
 222         default:
 223             assert(0);
 224         }
 225         xfree(task);
 226
 227         if (!c->tasks)
 228         {
 229             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 230             ZOOM_connection_put_event(c, event);
 231         }
 232     }
 233 }
 234
 235 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 236 {
 237     while (c->tasks)
 238         ZOOM_connection_remove_task(c);
 239 }
 240
 241 static void odr_wrbuf_write(ODR o, void *handle, int type,
 242                             const char *buf, int len)
 243 {
 244     WRBUF w = (WRBUF) handle;
 245     wrbuf_write(w, buf, len);
 246 }
 247
 248 ZOOM_API(ZOOM_connection)
 249     ZOOM_connection_create(ZOOM_options options)
 250 {
 251     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 252
 253     initlog();
 254
 255     c->log_api = log_api0;
 256     c->log_details = log_details0;
 257
 258     yaz_log(c->log_api, "%p ZOOM_connection_create", c);
 259
 260     c->proto = PROTO_Z3950;
 261     c->cs = 0;
 262     ZOOM_connection_set_mask(c, 0);
 263     c->reconnect_ok = 0;
 264     c->state = STATE_IDLE;
 265     c->addinfo = 0;
 266     c->diagset = 0;
 267     ZOOM_set_error(c, ZOOM_ERROR_NONE, 0);
 268     c->buf_in = 0;
 269     c->len_in = 0;
 270     c->buf_out = 0;
 271     c->len_out = 0;
 272     c->resultsets = 0;
 273
 274     c->options = ZOOM_options_create_with_parent(options);
 275
 276     c->host_port = 0;
 277     c->proxy = 0;
 278     c->tproxy = 0;
 279
 280     c->charset = c->lang = 0;
 281
 282     c->cookie_out = 0;
 283     c->cookie_in = 0;
 284     c->client_IP = 0;
 285     c->tasks = 0;
 286
 287     c->user = 0;
 288     c->group = 0;
 289     c->password = 0;
 290
 291     c->maximum_record_size = 0;
 292     c->preferred_message_size = 0;
 293
 294     c->odr_in = odr_createmem(ODR_DECODE);
 295     c->odr_out = odr_createmem(ODR_ENCODE);
 296     c->odr_print = 0;
 297     c->odr_save = 0;
 298
 299     c->async = 0;
 300     c->support_named_resultsets = 0;
 301     c->last_event = ZOOM_EVENT_NONE;
 302
 303     c->m_queue_front = 0;
 304     c->m_queue_back = 0;
 305
 306     c->sru_version = 0;
 307     c->no_redirects = 0;
 308     c->saveAPDU_wrbuf = 0;
 309     return c;
 310 }
 311
 312 ZOOM_API(void) ZOOM_connection_save_apdu_wrbuf(ZOOM_connection c, WRBUF w)
 313 {
 314     if (c->odr_save)
 315     {
 316         odr_destroy(c->odr_save);
 317         c->odr_save = 0;
 318     }
 319     if (w)
 320     {
 321         c->odr_save = odr_createmem(ODR_PRINT);
 322         odr_set_stream(c->odr_save, w, odr_wrbuf_write, 0);
 323     }
 324 }
 325
 326 /* set database names. Take local databases (if set); otherwise
 327    take databases given in ZURL (if set); otherwise use Default */
 328 char **ZOOM_connection_get_databases(ZOOM_connection con, ZOOM_options options,
 329                                      int *num, ODR odr)
 330 {
 331     char **databaseNames;
 332     const char *cp = ZOOM_options_get(options, "databaseName");
 333
 334     if ((!cp || !*cp) && con->host_port)
 335         cs_get_host_args(con->host_port, &cp);
 336     if (!cp || !*cp)
 337         cp = "Default";
 338     nmem_strsplit(odr_getmem(odr), "+", cp,  &databaseNames, num);
 339     return databaseNames;
 340 }
 341
 342 ZOOM_API(ZOOM_connection)
 343     ZOOM_connection_new(const char *host, int portnum)
 344 {
 345     ZOOM_connection c = ZOOM_connection_create(0);
 346
 347     ZOOM_connection_connect(c, host, portnum);
 348     return c;
 349 }
 350
 351 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 352 {
 353     if (!s || !*s)
 354         return zoom_sru_soap;
 355     if (!yaz_matchstr(s, "soap"))
 356         return zoom_sru_soap;
 357     else if (!yaz_matchstr(s, "get"))
 358         return zoom_sru_get;
 359     else if (!yaz_matchstr(s, "post"))
 360         return zoom_sru_post;
 361     else if (!yaz_matchstr(s, "solr"))
 362         return zoom_sru_solr;
 363     return zoom_sru_error;
 364 }
 365
 366 ZOOM_API(void)
 367     ZOOM_connection_connect(ZOOM_connection c,
 368                             const char *host, int portnum)
 369 {
 370     const char *val;
 371
 372     initlog();
 373
 374     yaz_log(c->log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 375             c, host ? host : "null", portnum);
 376
 377     ZOOM_set_error(c, ZOOM_ERROR_NONE, 0);
 378     ZOOM_connection_remove_tasks(c);
 379
 380     if (c->odr_print)
 381     {
 382         odr_setprint(c->odr_print, 0); /* prevent destroy from fclose'ing */
 383         odr_destroy(c->odr_print);
 384     }
 385     if (ZOOM_options_get_bool(c->options, "apdulog", 0))
 386     {
 387         c->odr_print = odr_createmem(ODR_PRINT);
 388         odr_setprint(c->odr_print, yaz_log_file());
 389     }
 390     else
 391         c->odr_print = 0;
 392
 393     if (c->cs)
 394     {
 395         yaz_log(c->log_details, "%p ZOOM_connection_connect reconnect ok", c);
 396         c->reconnect_ok = 1;
 397         return;
 398     }
 399     yaz_log(c->log_details, "%p ZOOM_connection_connect connect", c);
 400     xfree(c->proxy);
 401     c->proxy = 0;
 402     val = ZOOM_options_get(c->options, "proxy");
 403     if (val && *val)
 404     {
 405         yaz_log(c->log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 406         c->proxy = xstrdup(val);
 407     }
 408
 409     xfree(c->tproxy);
 410     c->tproxy = 0;
 411     val = ZOOM_options_get(c->options, "tproxy");
 412     if (val && *val)
 413     {
 414         yaz_log(c->log_details, "%p ZOOM_connection_connect tproxy=%s", c, val);
 415         c->tproxy = xstrdup(val);
 416     }
 417
 418     xfree(c->charset);
 419     c->charset = 0;
 420     val = ZOOM_options_get(c->options, "charset");
 421     if (val && *val)
 422     {
 423         yaz_log(c->log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 424         c->charset = xstrdup(val);
 425     }
 426
 427     xfree(c->lang);
 428     val = ZOOM_options_get(c->options, "lang");
 429     if (val && *val)
 430     {
 431         yaz_log(c->log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 432         c->lang = xstrdup(val);
 433     }
 434     else
 435         c->lang = 0;
 436
 437     if (host)
 438     {
 439         xfree(c->host_port);
 440         if (portnum)
 441         {
 442             char hostn[128];
 443             sprintf(hostn, "%.80s:%d", host, portnum);
 444             c->host_port = xstrdup(hostn);
 445         }
 446         else
 447             c->host_port = xstrdup(host);
 448     }
 449
 450     {
 451         /*
 452          * If the "<scheme>:" part of the host string is preceded by one
 453          * or more comma-separated <name>=<value> pairs, these are taken
 454          * to be options to be set on the connection object.  Among other
 455          * applications, this facility can be used to embed authentication
 456          * in a host string:
 457          *          user=admin,password=secret,tcp:localhost:9999
 458          */
 459         char *remainder = c->host_port;
 460         char *pcolon = strchr(remainder, ':');
 461         char *pcomma;
 462         char *pequals;
 463         while ((pcomma = strchr(remainder, ',')) != 0 &&
 464                (pcolon == 0 || pcomma < pcolon))
 465         {
 466             *pcomma = '\0';
 467             if ((pequals = strchr(remainder, '=')) != 0)
 468             {
 469                 *pequals = '\0';
 470                 ZOOM_connection_option_set(c, remainder, pequals+1);
 471             }
 472             remainder = pcomma+1;
 473         }
 474
 475         if (remainder != c->host_port)
 476         {
 477             remainder = xstrdup(remainder);
 478             xfree(c->host_port);
 479             c->host_port = remainder;
 480         }
 481     }
 482
 483     val = ZOOM_options_get(c->options, "sru");
 484     c->sru_mode = get_sru_mode_from_string(val);
 485
 486     xfree(c->sru_version);
 487     val = ZOOM_options_get(c->options, "sru_version");
 488     c->sru_version = xstrdup(val ? val : "1.2");
 489
 490     ZOOM_options_set(c->options, "host", c->host_port);
 491
 492     xfree(c->cookie_out);
 493     c->cookie_out = 0;
 494     val = ZOOM_options_get(c->options, "cookie");
 495     if (val && *val)
 496     {
 497         yaz_log(c->log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 498         c->cookie_out = xstrdup(val);
 499     }
 500
 501     xfree(c->client_IP);
 502     c->client_IP = 0;
 503     val = ZOOM_options_get(c->options, "clientIP");
 504     if (val && *val)
 505     {
 506         yaz_log(c->log_details, "%p ZOOM_connection_connect clientIP=%s",
 507                 c, val);
 508         c->client_IP = xstrdup(val);
 509     }
 510
 511     xfree(c->group);
 512     c->group = 0;
 513     val = ZOOM_options_get(c->options, "group");
 514     if (val && *val)
 515         c->group = xstrdup(val);
 516
 517     xfree(c->user);
 518     c->user = 0;
 519     val = ZOOM_options_get(c->options, "user");
 520     if (val && *val)
 521         c->user = xstrdup(val);
 522
 523     xfree(c->password);
 524     c->password = 0;
 525     val = ZOOM_options_get(c->options, "password");
 526     if (!val)
 527         val = ZOOM_options_get(c->options, "pass");
 528
 529     if (val && *val)
 530         c->password = xstrdup(val);
 531
 532     c->maximum_record_size =
 533         ZOOM_options_get_int(c->options, "maximumRecordSize", 64*1024*1024);
 534     c->preferred_message_size =
 535         ZOOM_options_get_int(c->options, "preferredMessageSize", 64*1024*1024);
 536
 537     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 538
 539     if (c->sru_mode == zoom_sru_error)
 540     {
 541         ZOOM_set_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, val);
 542         ZOOM_connection_remove_tasks(c);
 543         return;
 544     }
 545
 546     yaz_log(c->log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 547     ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 548
 549     if (!c->async)
 550     {
 551         while (ZOOM_event(1, &c))
 552             ;
 553     }
 554 }
 555
 556 ZOOM_API(void) ZOOM_resultset_release(ZOOM_resultset r)
 557 {
 558 #if ZOOM_RESULT_LISTS
 559 #else
 560     if (r->connection)
 561     {
 562         /* remove ourselves from the resultsets in connection */
 563         ZOOM_resultset *rp = &r->connection->resultsets;
 564         while (1)
 565         {
 566             assert(*rp);   /* we must be in this list!! */
 567             if (*rp == r)
 568             {   /* OK, we're here - take us out of it */
 569                 *rp = (*rp)->next;
 570                 break;
 571             }
 572             rp = &(*rp)->next;
 573         }
 574         r->connection = 0;
 575     }
 576 #endif
 577 }
 578
 579 ZOOM_API(void)
 580     ZOOM_connection_destroy(ZOOM_connection c)
 581 {
 582 #if ZOOM_RESULT_LISTS
 583     ZOOM_resultsets list;
 584 #else
 585     ZOOM_resultset r;
 586 #endif
 587     if (!c)
 588         return;
 589     yaz_log(c->log_api, "%p ZOOM_connection_destroy", c);
 590     if (c->cs)
 591         cs_close(c->cs);
 592
 593 #if ZOOM_RESULT_LISTS
 594     /* Remove the connection's usage of resultsets */
 595     list = c->resultsets;
 596     while (list) {
 597         ZOOM_resultsets removed = list;
 598         ZOOM_resultset_destroy(list->resultset);
 599         list = list->next;
 600         xfree(removed);
 601     }
 602 #else
 603     for (r = c->resultsets; r; r = r->next)
 604         r->connection = 0;
 605 #endif
 606
 607     xfree(c->buf_in);
 608     xfree(c->addinfo);
 609     xfree(c->diagset);
 610     odr_destroy(c->odr_in);
 611     odr_destroy(c->odr_out);
 612     if (c->odr_save)
 613         odr_destroy(c->odr_save);
 614     if (c->odr_print)
 615     {
 616         odr_setprint(c->odr_print, 0); /* prevent destroy from fclose'ing */
 617         odr_destroy(c->odr_print);
 618     }
 619     ZOOM_options_destroy(c->options);
 620     ZOOM_connection_remove_tasks(c);
 621     ZOOM_connection_remove_events(c);
 622     xfree(c->host_port);
 623     xfree(c->proxy);
 624     xfree(c->tproxy);
 625     xfree(c->charset);
 626     xfree(c->lang);
 627     xfree(c->cookie_out);
 628     xfree(c->cookie_in);
 629     xfree(c->client_IP);
 630     xfree(c->user);
 631     xfree(c->group);
 632     xfree(c->password);
 633     xfree(c->sru_version);
 634     wrbuf_destroy(c->saveAPDU_wrbuf);
 635     xfree(c);
 636 }
 637
 638 void ZOOM_resultset_addref(ZOOM_resultset r)
 639 {
 640     if (r)
 641     {
 642         yaz_mutex_enter(r->mutex);
 643         (r->refcount)++;
 644         yaz_log(log_details0, "%p ZOOM_resultset_addref count=%d",
 645                 r, r->refcount);
 646         yaz_mutex_leave(r->mutex);
 647     }
 648 }
 649
 650 static int g_resultsets = 0;
 651 static YAZ_MUTEX g_resultset_mutex = 0;
 652
 653 /* TODO We need to initialize this before running threaded:
 654  * call resultset_use(0)  */
 655
 656 static int resultset_use(int delta) {
 657     int resultset_count;
 658     if (g_resultset_mutex == 0)
 659         yaz_mutex_create(&g_resultset_mutex);
 660     yaz_mutex_enter(g_resultset_mutex);
 661     g_resultsets += delta;
 662     resultset_count = g_resultsets;
 663     yaz_mutex_leave(g_resultset_mutex);
 664     return resultset_count;
 665 }
 666
 667 int resultsets_count(void) {
 668     return resultset_use(0);
 669 }
 670
 671 ZOOM_resultset ZOOM_resultset_create(void)
 672 {
 673     int i;
 674     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 675
 676     initlog();
 677
 678     yaz_log(log_details0, "%p ZOOM_resultset_create", r);
 679     r->refcount = 1;
 680     r->size = 0;
 681     r->odr = odr_createmem(ODR_ENCODE);
 682     r->piggyback = 1;
 683     r->setname = 0;
 684     r->step = 0;
 685     for (i = 0; i<RECORD_HASH_SIZE; i++)
 686         r->record_hash[i] = 0;
 687     r->r_sort_spec = 0;
 688     r->query = 0;
 689     r->connection = 0;
 690     r->databaseNames = 0;
 691     r->num_databaseNames = 0;
 692     r->facets = 0;
 693     r->num_facets = 0;
 694     r->facets_names = 0;
 695     r->mutex = 0;
 696     yaz_mutex_create(&r->mutex);
 697 #if SHPTR
 698     {
 699         WRBUF w = wrbuf_alloc();
 700         YAZ_SHPTR_INIT(r->record_wrbuf, w);
 701     }
 702 #endif
 703     resultset_use(1);
 704     return r;
 705 }
 706
 707 ZOOM_API(ZOOM_resultset)
 708     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 709 {
 710     ZOOM_resultset r;
 711     ZOOM_query s = ZOOM_query_create();
 712
 713     ZOOM_query_prefix(s, q);
 714
 715     r = ZOOM_connection_search(c, s);
 716     ZOOM_query_destroy(s);
 717     return r;
 718 }
 719
 720 ZOOM_API(ZOOM_resultset)
 721     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 722 {
 723     ZOOM_resultset r = ZOOM_resultset_create();
 724     ZOOM_task task;
 725     const char *cp;
 726     int start, count;
 727     const char *syntax, *elementSetName, *schema;
 728 #if ZOOM_RESULT_LISTS
 729     ZOOM_resultsets set;
 730 #endif
 731
 732     yaz_log(c->log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 733     r->r_sort_spec = ZOOM_query_get_sortspec(q);
 734     r->query = q;
 735
 736     r->options = ZOOM_options_create_with_parent(c->options);
 737
 738     start = ZOOM_options_get_int(r->options, "start", 0);
 739     count = ZOOM_options_get_int(r->options, "count", 0);
 740     {
 741         /* If "presentChunk" is defined use that; otherwise "step" */
 742         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 743         r->step = ZOOM_options_get_int(r->options,
 744                                        (cp != 0 ? "presentChunk": "step"), 0);
 745     }
 746     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 747     cp = ZOOM_options_get(r->options, "setname");
 748     if (cp)
 749         r->setname = xstrdup(cp);
 750
 751     r->databaseNames = ZOOM_connection_get_databases(c, c->options, &r->num_databaseNames,
 752                                          r->odr);
 753
 754     r->connection = c;
 755
 756 #if ZOOM_RESULT_LISTS
 757     yaz_log(log_details, "%p ZOOM_connection_search: Adding new resultset (%p) to resultsets (%p) ", c, r, c->resultsets);
 758     set = xmalloc(sizeof(*set));
 759     ZOOM_resultset_addref(r);
 760     set->resultset = r;
 761     set->next = c->resultsets;
 762     c->resultsets = set;
 763 #else
 764     r->next = c->resultsets;
 765     c->resultsets = r;
 766 #endif
 767     if (c->host_port && c->proto == PROTO_HTTP)
 768     {
 769         if (!c->cs)
 770         {
 771             yaz_log(c->log_details, "ZOOM_connection_search: no comstack");
 772             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 773         }
 774         else
 775         {
 776             yaz_log(c->log_details, "ZOOM_connection_search: reconnect");
 777             c->reconnect_ok = 1;
 778         }
 779     }
 780
 781     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 782     task->u.search.resultset = r;
 783     task->u.search.start = start;
 784     task->u.search.count = count;
 785     task->u.search.recv_search_fired = 0;
 786
 787     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 788     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 789     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 790     task->u.search.elementSetName = elementSetName ?
 791         xstrdup(elementSetName) : 0;
 792     schema = ZOOM_options_get(r->options, "schema");
 793     task->u.search.schema = schema ? xstrdup(schema) : 0;
 794
 795     ZOOM_resultset_addref(r);
 796
 797     ZOOM_query_addref(q);
 798
 799     if (!c->async)
 800     {
 801         while (ZOOM_event(1, &c))
 802             ;
 803     }
 804     return r;
 805 }
 806
 807 ZOOM_API(void)
 808     ZOOM_resultset_sort(ZOOM_resultset r,
 809                          const char *sort_type, const char *sort_spec)
 810 {
 811     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 812 }
 813
 814 ZOOM_API(int)
 815     ZOOM_resultset_sort1(ZOOM_resultset r,
 816                          const char *sort_type, const char *sort_spec)
 817 {
 818     ZOOM_connection c = r->connection;
 819     ZOOM_task task;
 820     ZOOM_query newq;
 821
 822     newq = ZOOM_query_create();
 823     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 824         return -1;
 825
 826     yaz_log(c->log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 827             r, r, sort_type, sort_spec);
 828     if (!c)
 829         return 0;
 830
 831     if (c->host_port && c->proto == PROTO_HTTP)
 832     {
 833         if (!c->cs)
 834         {
 835             yaz_log(c->log_details, "%p ZOOM_resultset_sort: no comstack", r);
 836             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 837         }
 838         else
 839         {
 840             yaz_log(c->log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 841                     r);
 842             c->reconnect_ok = 1;
 843         }
 844     }
 845
 846     ZOOM_resultset_cache_reset(r);
 847     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 848     task->u.sort.resultset = r;
 849     task->u.sort.q = newq;
 850
 851     ZOOM_resultset_addref(r);
 852
 853     if (!c->async)
 854     {
 855         while (ZOOM_event(1, &c))
 856             ;
 857     }
 858
 859     return 0;
 860 }
 861
 862 ZOOM_API(void)
 863     ZOOM_resultset_destroy(ZOOM_resultset r)
 864 {
 865     resultset_destroy(r);
 866 }
 867
 868 static void resultset_destroy(ZOOM_resultset r)
 869 {
 870     if (!r)
 871         return;
 872     yaz_mutex_enter(r->mutex);
 873     (r->refcount)--;
 874     yaz_log(log_details0, "%p ZOOM_resultset_destroy r=%p count=%d",
 875             r, r, r->refcount);
 876     if (r->refcount == 0)
 877     {
 878         yaz_mutex_leave(r->mutex);
 879
 880         yaz_log(log_details0, "%p ZOOM_connection resultset_destroy: Deleting resultset (%p) ", r->connection, r);
 881         ZOOM_resultset_cache_reset(r);
 882         ZOOM_resultset_release(r);
 883         ZOOM_query_destroy(r->query);
 884         ZOOM_options_destroy(r->options);
 885         odr_destroy(r->odr);
 886         xfree(r->setname);
 887         yaz_mutex_destroy(&r->mutex);
 888 #if SHPTR
 889         YAZ_SHPTR_DEC(r->record_wrbuf, wrbuf_destroy);
 890 #endif
 891         resultset_use(-1);
 892         xfree(r);
 893     }
 894     else
 895         yaz_mutex_leave(r->mutex);
 896 }
 897
 898 ZOOM_API(size_t)
 899     ZOOM_resultset_size(ZOOM_resultset r)
 900 {
 901     return r->size;
 902 }
 903
 904 int ZOOM_test_reconnect(ZOOM_connection c)
 905 {
 906     ZOOM_Event event;
 907
 908     if (!c->reconnect_ok)
 909         return 0;
 910     ZOOM_connection_close(c);
 911     c->reconnect_ok = 0;
 912     c->tasks->running = 0;
 913     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
 914
 915     event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 916     ZOOM_connection_put_event(c, event);
 917
 918     return 1;
 919 }
 920
 921 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
 922                                     int force_sync, int start, int count)
 923 {
 924     ZOOM_task task;
 925     ZOOM_connection c;
 926     const char *cp;
 927     const char *syntax, *elementSetName;
 928
 929     if (!r)
 930         return;
 931     yaz_log(log_details0, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 932             " count=%d", r, force_sync, start, count);
 933     c = r->connection;
 934     if (!c)
 935         return;
 936
 937     if (c->host_port && c->proto == PROTO_HTTP)
 938     {
 939         if (!c->cs)
 940         {
 941             yaz_log(log_details0, "%p ZOOM_resultset_retrieve: no comstack", r);
 942             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 943         }
 944         else
 945         {
 946             yaz_log(log_details0, "%p ZOOM_resultset_retrieve: prepare "
 947                     "reconnect", r);
 948             c->reconnect_ok = 1;
 949         }
 950     }
 951     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
 952     task->u.retrieve.resultset = r;
 953     task->u.retrieve.start = start;
 954     task->u.retrieve.count = count;
 955
 956     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 957     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
 958     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 959     task->u.retrieve.elementSetName = elementSetName
 960         ? xstrdup(elementSetName) : 0;
 961
 962     cp = ZOOM_options_get(r->options, "schema");
 963     task->u.retrieve.schema = cp ? xstrdup(cp) : 0;
 964
 965     ZOOM_resultset_addref(r);
 966
 967     if (!r->connection->async || force_sync)
 968         while (r->connection && ZOOM_event(1, &r->connection))
 969             ;
 970 }
 971
 972 ZOOM_API(void)
 973     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
 974                            size_t start, size_t count)
 975 {
 976     int force_present = 0;
 977
 978     if (!r)
 979         return ;
 980     yaz_log(log_api0, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
 981             r, r, (long) start, (long) count);
 982     if (count && recs)
 983         force_present = 1;
 984     ZOOM_resultset_retrieve(r, force_present, start, count);
 985     if (force_present)
 986     {
 987         size_t i;
 988         for (i = 0; i< count; i++)
 989             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
 990     }
 991 }
 992
 993 ZOOM_API(size_t)
 994     ZOOM_resultset_facets_size(ZOOM_resultset r) {
 995     return r->num_facets;
 996 }
 997
 998 ZOOM_API(ZOOM_facet_field)
 999     ZOOM_resultset_get_facet_field(ZOOM_resultset r, const char *name) {
1000     int num = r->num_facets;
1001     ZOOM_facet_field *facets = r->facets;
1002     int index;
1003     for (index = 0; index < num; index++) {
1004         if (!strcmp(facets[index]->facet_name, name)) {
1005             return facets[index];
1006         }
1007     }
1008     return 0;
1009 }
1010
1011 ZOOM_API(ZOOM_facet_field)
1012     ZOOM_resultset_get_facet_field_by_index(ZOOM_resultset r, int index) {
1013     int num = r->num_facets;
1014     ZOOM_facet_field *facets = r->facets;
1015     if (index >= 0 && index < num) {
1016         return facets[index];
1017     }
1018     return 0;
1019 }
1020
1021 ZOOM_API(ZOOM_facet_field *)
1022     ZOOM_resultset_facets(ZOOM_resultset r)
1023 {
1024     return r->facets;
1025 }
1026
1027 ZOOM_API(const char**)
1028     ZOOM_resultset_facets_names(ZOOM_resultset r)
1029 {
1030     return (const char **) r->facets_names;
1031 }
1032
1033 ZOOM_API(const char*)
1034     ZOOM_facet_field_name(ZOOM_facet_field field)
1035 {
1036     return field->facet_name;
1037 }
1038
1039 ZOOM_API(size_t)
1040     ZOOM_facet_field_term_count(ZOOM_facet_field field)
1041 {
1042     return field->num_terms;
1043 }
1044
1045 ZOOM_API(const char*)
1046     ZOOM_facet_field_get_term(ZOOM_facet_field field, size_t idx, int *freq) {
1047     *freq = field->facet_terms[idx].frequency;
1048     return field->facet_terms[idx].term;
1049 }
1050
1051
1052 static void get_cert(ZOOM_connection c)
1053 {
1054     char *cert_buf;
1055     int cert_len;
1056
1057     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1058     {
1059         ZOOM_connection_option_setl(c, "sslPeerCert",
1060                                     cert_buf, cert_len);
1061         xfree(cert_buf);
1062     }
1063 }
1064
1065 static zoom_ret do_connect_host(ZOOM_connection c,
1066                                 const char *logical_url);
1067
1068 static zoom_ret do_connect(ZOOM_connection c)
1069 {
1070     return do_connect_host(c, c->host_port);
1071 }
1072
1073 static zoom_ret do_connect_host(ZOOM_connection c, const char *logical_url)
1074 {
1075     void *add;
1076
1077     if (c->cs)
1078         cs_close(c->cs);
1079     c->cs = cs_create_host_proxy(logical_url, 0, &add,
1080                                  c->tproxy ? c->tproxy : c->proxy);
1081
1082     if (c->cs && c->cs->protocol == PROTO_HTTP)
1083     {
1084 #if YAZ_HAVE_XML2
1085         c->proto = PROTO_HTTP;
1086 #else
1087         ZOOM_set_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1088         ZOOM_connection_close(c);
1089         return zoom_complete;
1090 #endif
1091     }
1092     if (c->cs)
1093     {
1094         int ret = cs_connect(c->cs, add);
1095         if (ret == 0)
1096         {
1097             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1098             ZOOM_connection_put_event(c, event);
1099             get_cert(c);
1100             if (c->proto == PROTO_Z3950)
1101                 ZOOM_connection_Z3950_send_init(c);
1102             else
1103             {
1104                 /* no init request for SRW .. */
1105                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1106                 ZOOM_connection_remove_task(c);
1107                 ZOOM_connection_set_mask(c, 0);
1108                 ZOOM_connection_exec_task(c);
1109             }
1110             c->state = STATE_ESTABLISHED;
1111             return zoom_pending;
1112         }
1113         else if (ret > 0)
1114         {
1115             int mask = ZOOM_SELECT_EXCEPT;
1116             if (c->cs->io_pending & CS_WANT_WRITE)
1117                 mask += ZOOM_SELECT_WRITE;
1118             if (c->cs->io_pending & CS_WANT_READ)
1119                 mask += ZOOM_SELECT_READ;
1120             ZOOM_connection_set_mask(c, mask);
1121             c->state = STATE_CONNECTING;
1122             return zoom_pending;
1123         }
1124     }
1125     c->state = STATE_IDLE;
1126     ZOOM_set_error(c, ZOOM_ERROR_CONNECT, logical_url);
1127     return zoom_complete;
1128 }
1129
1130 /* returns 1 if PDU was sent OK (still pending )
1131    0 if PDU was not sent OK (nothing to wait for)
1132 */
1133
1134 ZOOM_API(ZOOM_record)
1135     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1136 {
1137     const char *syntax =
1138         ZOOM_options_get(s->options, "preferredRecordSyntax");
1139     const char *elementSetName =
1140         ZOOM_options_get(s->options, "elementSetName");
1141     const char *schema =
1142         ZOOM_options_get(s->options, "schema");
1143
1144     return ZOOM_record_cache_lookup(s, pos, syntax, elementSetName, schema);
1145 }
1146
1147 ZOOM_API(ZOOM_record)
1148     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1149 {
1150     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1151
1152     if (!rec)
1153     {
1154         /*
1155          * MIKE: I think force_sync should always be zero, but I don't
1156          * want to make this change until I get the go-ahead from
1157          * Adam, in case something depends on the old synchronous
1158          * behaviour.
1159          */
1160         int force_sync = 1;
1161         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1162         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1163         rec = ZOOM_resultset_record_immediate(r, pos);
1164     }
1165     return rec;
1166 }
1167
1168 ZOOM_API(ZOOM_scanset)
1169     ZOOM_connection_scan(ZOOM_connection c, const char *start)
1170 {
1171     ZOOM_scanset s;
1172     ZOOM_query q = ZOOM_query_create();
1173
1174     ZOOM_query_prefix(q, start);
1175
1176     s = ZOOM_connection_scan1(c, q);
1177     ZOOM_query_destroy(q);
1178     return s;
1179
1180 }
1181
1182 ZOOM_API(ZOOM_scanset)
1183     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
1184 {
1185     ZOOM_scanset scan = 0;
1186     Z_Query *z_query = ZOOM_query_get_Z_Query(q);
1187
1188     if (!z_query)
1189         return 0;
1190     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
1191     scan->connection = c;
1192     scan->odr = odr_createmem(ODR_DECODE);
1193     scan->options = ZOOM_options_create_with_parent(c->options);
1194     scan->refcount = 1;
1195     scan->scan_response = 0;
1196     scan->srw_scan_response = 0;
1197
1198     scan->query = q;
1199     ZOOM_query_addref(q);
1200     scan->databaseNames = ZOOM_connection_get_databases(c, c->options,
1201                                             &scan->num_databaseNames,
1202                                             scan->odr);
1203
1204     if (1)
1205     {
1206         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
1207         task->u.scan.scan = scan;
1208
1209         (scan->refcount)++;
1210         if (!c->async)
1211         {
1212             while (ZOOM_event(1, &c))
1213                 ;
1214         }
1215     }
1216     return scan;
1217 }
1218
1219 ZOOM_API(void)
1220     ZOOM_scanset_destroy(ZOOM_scanset scan)
1221 {
1222     if (!scan)
1223         return;
1224     (scan->refcount)--;
1225     if (scan->refcount == 0)
1226     {
1227         ZOOM_query_destroy(scan->query);
1228
1229         odr_destroy(scan->odr);
1230
1231         ZOOM_options_destroy(scan->options);
1232         xfree(scan);
1233     }
1234 }
1235
1236 static zoom_ret send_package(ZOOM_connection c)
1237 {
1238     ZOOM_Event event;
1239
1240     yaz_log(c->log_details, "%p send_package", c);
1241     if (!c->tasks)
1242         return zoom_complete;
1243     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
1244
1245     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1246     ZOOM_connection_put_event(c, event);
1247
1248     c->buf_out = c->tasks->u.package->buf_out;
1249     c->len_out = c->tasks->u.package->len_out;
1250
1251     return ZOOM_send_buf(c);
1252 }
1253
1254 ZOOM_API(size_t)
1255     ZOOM_scanset_size(ZOOM_scanset scan)
1256 {
1257     if (!scan)
1258         return 0;
1259
1260     if (scan->scan_response && scan->scan_response->entries)
1261         return scan->scan_response->entries->num_entries;
1262     else if (scan->srw_scan_response)
1263         return scan->srw_scan_response->num_terms;
1264     return 0;
1265 }
1266
1267 static void ZOOM_scanset_term_x(ZOOM_scanset scan, size_t pos,
1268                                 size_t *occ,
1269                                 const char **value_term, size_t *value_len,
1270                                 const char **disp_term, size_t *disp_len)
1271 {
1272     size_t noent = ZOOM_scanset_size(scan);
1273
1274     *value_term = 0;
1275     *value_len = 0;
1276
1277     *disp_term = 0;
1278     *disp_len = 0;
1279
1280     *occ = 0;
1281     if (pos >= noent)
1282         return;
1283     if (scan->scan_response)
1284     {
1285         Z_ScanResponse *res = scan->scan_response;
1286         if (res->entries->entries[pos]->which == Z_Entry_termInfo)
1287         {
1288             Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
1289
1290             *value_term = (const char *) t->term->u.general->buf;
1291             *value_len = t->term->u.general->len;
1292             if (t->displayTerm)
1293             {
1294                 *disp_term = t->displayTerm;
1295                 *disp_len = strlen(*disp_term);
1296             }
1297             else if (t->term->which == Z_Term_general)
1298             {
1299                 *disp_term = (const char *) t->term->u.general->buf;
1300                 *disp_len = t->term->u.general->len;
1301             }
1302             *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
1303         }
1304     }
1305     if (scan->srw_scan_response)
1306     {
1307         Z_SRW_scanResponse *res = scan->srw_scan_response;
1308         Z_SRW_scanTerm *t = res->terms + pos;
1309         if (t)
1310         {
1311             *value_term = t->value;
1312             *value_len = strlen(*value_term);
1313
1314             if (t->displayTerm)
1315                 *disp_term = t->displayTerm;
1316             else
1317                 *disp_term = t->value;
1318             *disp_len = strlen(*disp_term);
1319             *occ = t->numberOfRecords ? *t->numberOfRecords : 0;
1320         }
1321     }
1322 }
1323
1324 ZOOM_API(const char *)
1325     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
1326                       size_t *occ, size_t *len)
1327 {
1328     const char *value_term = 0;
1329     size_t value_len = 0;
1330     const char *disp_term = 0;
1331     size_t disp_len = 0;
1332
1333     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
1334                         &disp_term, &disp_len);
1335
1336     *len = value_len;
1337     return value_term;
1338 }
1339
1340 ZOOM_API(const char *)
1341     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
1342                               size_t *occ, size_t *len)
1343 {
1344     const char *value_term = 0;
1345     size_t value_len = 0;
1346     const char *disp_term = 0;
1347     size_t disp_len = 0;
1348
1349     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
1350                         &disp_term, &disp_len);
1351
1352     *len = disp_len;
1353     return disp_term;
1354 }
1355
1356 ZOOM_API(const char *)
1357     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
1358 {
1359     return ZOOM_options_get(scan->options, key);
1360 }
1361
1362 ZOOM_API(void)
1363     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
1364                             const char *val)
1365 {
1366     ZOOM_options_set(scan->options, key, val);
1367 }
1368
1369
1370 ZOOM_API(ZOOM_package)
1371     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
1372 {
1373     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
1374
1375     p->connection = c;
1376     p->odr_out = odr_createmem(ODR_ENCODE);
1377     p->options = ZOOM_options_create_with_parent2(options, c->options);
1378     p->refcount = 1;
1379     p->buf_out = 0;
1380     p->len_out = 0;
1381     return p;
1382 }
1383
1384 ZOOM_API(void)
1385     ZOOM_package_destroy(ZOOM_package p)
1386 {
1387     if (!p)
1388         return;
1389     (p->refcount)--;
1390     if (p->refcount == 0)
1391     {
1392         odr_destroy(p->odr_out);
1393         xfree(p->buf_out);
1394
1395         ZOOM_options_destroy(p->options);
1396         xfree(p);
1397     }
1398 }
1399
1400 ZOOM_API(const char *)
1401     ZOOM_package_option_get(ZOOM_package p, const char *key)
1402 {
1403     return ZOOM_options_get(p->options, key);
1404 }
1405
1406 ZOOM_API(const char *)
1407     ZOOM_package_option_getl(ZOOM_package p, const char *key, int *lenp)
1408 {
1409     return ZOOM_options_getl(p->options, key, lenp);
1410 }
1411
1412 ZOOM_API(void)
1413     ZOOM_package_option_set(ZOOM_package p, const char *key,
1414                             const char *val)
1415 {
1416     ZOOM_options_set(p->options, key, val);
1417 }
1418
1419 ZOOM_API(void)
1420     ZOOM_package_option_setl(ZOOM_package p, const char *key,
1421                              const char *val, int len)
1422 {
1423     ZOOM_options_setl(p->options, key, val, len);
1424 }
1425
1426 ZOOM_API(int)
1427     ZOOM_connection_exec_task(ZOOM_connection c)
1428 {
1429     ZOOM_task task = c->tasks;
1430     zoom_ret ret = zoom_complete;
1431
1432     if (!task)
1433         return 0;
1434     yaz_log(c->log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
1435             c, task->which, task->running);
1436     if (c->error != ZOOM_ERROR_NONE)
1437     {
1438         yaz_log(c->log_details, "%p ZOOM_connection_exec_task "
1439                 "removing tasks because of error = %d", c, c->error);
1440         ZOOM_connection_remove_tasks(c);
1441         return 0;
1442     }
1443     if (task->running)
1444     {
1445         yaz_log(c->log_details, "%p ZOOM_connection_exec_task "
1446                 "task already running", c);
1447         return 0;
1448     }
1449     task->running = 1;
1450     ret = zoom_complete;
1451     if (c->cs || task->which == ZOOM_TASK_CONNECT)
1452     {
1453         switch (task->which)
1454         {
1455         case ZOOM_TASK_SEARCH:
1456             if (c->proto == PROTO_HTTP)
1457                 ret = ZOOM_connection_srw_send_search(c);
1458             else
1459                 ret = ZOOM_connection_Z3950_send_search(c);
1460             break;
1461         case ZOOM_TASK_RETRIEVE:
1462             if (c->proto == PROTO_HTTP)
1463                 ret = ZOOM_connection_srw_send_search(c);
1464             else
1465                 ret = send_Z3950_present(c);
1466             break;
1467         case ZOOM_TASK_CONNECT:
1468             ret = do_connect(c);
1469             break;
1470         case ZOOM_TASK_SCAN:
1471             if (c->proto == PROTO_HTTP)
1472                 ret = ZOOM_connection_srw_send_scan(c);
1473             else
1474                 ret = ZOOM_connection_Z3950_send_scan(c);
1475             break;
1476         case ZOOM_TASK_PACKAGE:
1477             ret = send_package(c);
1478             break;
1479         case ZOOM_TASK_SORT:
1480             c->tasks->u.sort.resultset->r_sort_spec =
1481                 ZOOM_query_get_sortspec(c->tasks->u.sort.q);
1482             ret = send_Z3950_sort(c, c->tasks->u.sort.resultset);
1483             break;
1484         }
1485     }
1486     else
1487     {
1488         yaz_log(c->log_details, "%p ZOOM_connection_exec_task "
1489                 "remove tasks because no connection exist", c);
1490         ZOOM_connection_remove_tasks(c);
1491     }
1492     if (ret == zoom_complete)
1493     {
1494         yaz_log(c->log_details, "%p ZOOM_connection_exec_task "
1495                 "task removed (complete)", c);
1496         ZOOM_connection_remove_task(c);
1497         return 0;
1498     }
1499     yaz_log(c->log_details, "%p ZOOM_connection_exec_task "
1500             "task pending", c);
1501     return 1;
1502 }
1503
1504 #if YAZ_HAVE_XML2
1505
1506 static zoom_ret send_HTTP_redirect(ZOOM_connection c, const char *uri,
1507                                   Z_HTTP_Response *cookie_hres)
1508 {
1509     struct Z_HTTP_Header *h;
1510     char *combined_cookies = 0;
1511     int combined_cookies_len = 0;
1512     Z_GDU *gdu = z_get_HTTP_Request_uri(c->odr_out, uri, 0, c->proxy ? 1 : 0);
1513
1514     gdu->u.HTTP_Request->method = odr_strdup(c->odr_out, "GET");
1515     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers, "Accept",
1516                       "text/xml");
1517
1518     for (h = cookie_hres->headers; h; h = h->next)
1519     {
1520         if (!strcmp(h->name, "Set-Cookie"))
1521         {
1522             char *cp;
1523
1524             if (!(cp = strchr(h->value, ';')))
1525                 cp = h->value + strlen(h->value);
1526             if (cp - h->value >= 1) {
1527                 combined_cookies = xrealloc(combined_cookies, combined_cookies_len + cp - h->value + 3);
1528                 memcpy(combined_cookies+combined_cookies_len, h->value, cp - h->value);
1529                 combined_cookies[combined_cookies_len + cp - h->value] = '\0';
1530                 strcat(combined_cookies,"; ");
1531                 combined_cookies_len = strlen(combined_cookies);
1532             }
1533         }
1534     }
1535
1536     if (combined_cookies_len)
1537     {
1538         z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1539                           "Cookie", combined_cookies);
1540         xfree(combined_cookies);
1541     }
1542
1543     if (c->user && c->password)
1544     {
1545         z_HTTP_header_add_basic_auth(c->odr_out, &gdu->u.HTTP_Request->headers,
1546                                      c->user, c->password);
1547     }
1548     return ZOOM_send_GDU(c, gdu);
1549 }
1550
1551 zoom_ret ZOOM_send_GDU(ZOOM_connection c, Z_GDU *gdu)
1552 {
1553     ZOOM_Event event;
1554
1555     int r = z_GDU(c->odr_out, &gdu, 0, 0);
1556     if (!r)
1557         return zoom_complete;
1558     if (c->odr_print)
1559         z_GDU(c->odr_print, &gdu, 0, 0);
1560     if (c->odr_save)
1561         z_GDU(c->odr_save, &gdu, 0, 0);
1562     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1563     odr_reset(c->odr_out);
1564
1565     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1566     ZOOM_connection_put_event(c, event);
1567
1568     return ZOOM_send_buf(c);
1569 }
1570
1571 #if YAZ_HAVE_XML2
1572 void ZOOM_set_HTTP_error(ZOOM_connection c, int error,
1573                          const char *addinfo, const char *addinfo2)
1574 {
1575     ZOOM_set_dset_error(c, error, "HTTP", addinfo, addinfo2);
1576 }
1577 #endif
1578
1579
1580 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
1581 {
1582     zoom_ret cret = zoom_complete;
1583     int ret = -1;
1584     char *addinfo = 0;
1585     const char *connection_head = z_HTTP_header_lookup(hres->headers,
1586                                                        "Connection");
1587     const char *location;
1588
1589     ZOOM_connection_set_mask(c, 0);
1590     yaz_log(c->log_details, "%p handle_http", c);
1591
1592     if ((hres->code == 301 || hres->code == 302) && c->sru_mode == zoom_sru_get
1593         && (location = z_HTTP_header_lookup(hres->headers, "Location")))
1594     {
1595         c->no_redirects++;
1596         if (c->no_redirects > 10)
1597         {
1598             ZOOM_set_HTTP_error(c, hres->code, 0, 0);
1599             c->no_redirects = 0;
1600             ZOOM_connection_close(c);
1601         }
1602         else
1603         {
1604             /* since redirect may change host we just reconnect. A smarter
1605                implementation might check whether it's the same server */
1606             do_connect_host(c, location);
1607             send_HTTP_redirect(c, location, hres);
1608             /* we're OK for now. Operation is not really complete */
1609             return;
1610         }
1611     }
1612     else
1613     {
1614         ret = ZOOM_handle_sru(c, hres, &cret, &addinfo);
1615         if (ret == 0)
1616         {
1617             if (c->no_redirects) /* end of redirect. change hosts again */
1618                 ZOOM_connection_close(c);
1619         }
1620         c->no_redirects = 0;
1621     }
1622     if (ret)
1623     {
1624         if (hres->code != 200)
1625             ZOOM_set_HTTP_error(c, hres->code, 0, 0);
1626         else
1627         {
1628             yaz_log(YLOG_LOG, "set error... addinfo=%s", addinfo ?
1629                     addinfo : "NULL");
1630             ZOOM_set_error(c, ZOOM_ERROR_DECODE, addinfo);
1631         }
1632         ZOOM_connection_close(c);
1633     }
1634     if (cret == zoom_complete)
1635     {
1636         yaz_log(c->log_details, "removing tasks in handle_http");
1637         ZOOM_connection_remove_task(c);
1638     }
1639     {
1640         int must_close = 0;
1641         if (!strcmp(hres->version, "1.0"))
1642         {
1643             /* HTTP 1.0: only if Keep-Alive we stay alive.. */
1644             if (!connection_head || strcmp(connection_head, "Keep-Alive"))
1645                 must_close = 1;
1646         }
1647         else
1648         {
1649             /* HTTP 1.1: only if no close we stay alive.. */
1650             if (connection_head && !strcmp(connection_head, "close"))
1651                 must_close = 1;
1652         }
1653         if (must_close)
1654         {
1655             ZOOM_connection_close(c);
1656             if (c->tasks)
1657             {
1658                 c->tasks->running = 0;
1659                 ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
1660                 c->reconnect_ok = 0;
1661             }
1662         }
1663         else
1664             c->reconnect_ok = 1; /* if the server closes anyway */
1665     }
1666 }
1667 #endif
1668
1669 static int do_read(ZOOM_connection c)
1670 {
1671     int r, more;
1672     ZOOM_Event event;
1673
1674     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
1675     ZOOM_connection_put_event(c, event);
1676
1677     r = cs_get(c->cs, &c->buf_in, &c->len_in);
1678     more = cs_more(c->cs);
1679     yaz_log(c->log_details, "%p do_read len=%d more=%d", c, r, more);
1680     if (r == 1)
1681         return 0;
1682     if (r <= 0)
1683     {
1684         if (!ZOOM_test_reconnect(c))
1685         {
1686             ZOOM_set_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
1687             ZOOM_connection_close(c);
1688         }
1689     }
1690     else
1691     {
1692         Z_GDU *gdu;
1693         ZOOM_Event event;
1694
1695         odr_reset(c->odr_in);
1696         odr_setbuf(c->odr_in, c->buf_in, r, 0);
1697         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
1698         ZOOM_connection_put_event(c, event);
1699
1700         if (!z_GDU(c->odr_in, &gdu, 0, 0))
1701         {
1702             int x;
1703             int err = odr_geterrorx(c->odr_in, &x);
1704             char msg[100];
1705             const char *element = odr_getelement(c->odr_in);
1706             yaz_snprintf(msg, sizeof(msg),
1707                     "ODR code %d:%d element=%s offset=%d",
1708                     err, x, element ? element : "<unknown>",
1709                     odr_offset(c->odr_in));
1710             ZOOM_set_error(c, ZOOM_ERROR_DECODE, msg);
1711             if (c->log_api)
1712             {
1713                 FILE *ber_file = yaz_log_file();
1714                 if (ber_file)
1715                     odr_dumpBER(ber_file, c->buf_in, r);
1716             }
1717             ZOOM_connection_close(c);
1718         }
1719         else
1720         {
1721             if (c->odr_print)
1722                 z_GDU(c->odr_print, &gdu, 0, 0);
1723             if (c->odr_save)
1724                 z_GDU(c->odr_save, &gdu, 0, 0);
1725             if (gdu->which == Z_GDU_Z3950)
1726                 ZOOM_handle_Z3950_apdu(c, gdu->u.z3950);
1727             else if (gdu->which == Z_GDU_HTTP_Response)
1728             {
1729 #if YAZ_HAVE_XML2
1730                 handle_http(c, gdu->u.HTTP_Response);
1731 #else
1732                 ZOOM_set_error(c, ZOOM_ERROR_DECODE, 0);
1733                 ZOOM_connection_close(c);
1734 #endif
1735             }
1736         }
1737     }
1738     return 1;
1739 }
1740
1741 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
1742 {
1743     int r;
1744     ZOOM_Event event;
1745
1746     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
1747     ZOOM_connection_put_event(c, event);
1748
1749     yaz_log(c->log_details, "%p do_write_ex len=%d", c, len_out);
1750     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
1751     {
1752         yaz_log(c->log_details, "%p do_write_ex write failed", c);
1753         if (ZOOM_test_reconnect(c))
1754         {
1755             return zoom_pending;
1756         }
1757         if (c->state == STATE_CONNECTING)
1758             ZOOM_set_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1759         else
1760             ZOOM_set_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
1761         ZOOM_connection_close(c);
1762         return zoom_complete;
1763     }
1764     else if (r == 1)
1765     {
1766         int mask = ZOOM_SELECT_EXCEPT;
1767         if (c->cs->io_pending & CS_WANT_WRITE)
1768             mask += ZOOM_SELECT_WRITE;
1769         if (c->cs->io_pending & CS_WANT_READ)
1770             mask += ZOOM_SELECT_READ;
1771         ZOOM_connection_set_mask(c, mask);
1772         yaz_log(c->log_details, "%p do_write_ex write incomplete mask=%d",
1773                 c, c->mask);
1774     }
1775     else
1776     {
1777         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
1778         yaz_log(c->log_details, "%p do_write_ex write complete mask=%d",
1779                 c, c->mask);
1780     }
1781     return zoom_pending;
1782 }
1783
1784 zoom_ret ZOOM_send_buf(ZOOM_connection c)
1785 {
1786     return do_write_ex(c, c->buf_out, c->len_out);
1787 }
1788
1789
1790 ZOOM_API(const char *)
1791     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
1792 {
1793     if (!strcmp(key, "APDU"))
1794     {
1795         return c->saveAPDU_wrbuf ? wrbuf_cstr(c->saveAPDU_wrbuf) : "";
1796     }
1797     else
1798         return ZOOM_options_get(c->options, key);
1799 }
1800
1801 ZOOM_API(const char *)
1802     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
1803 {
1804     if (!strcmp(key, "APDU"))
1805     {
1806         if (c->saveAPDU_wrbuf)
1807         {
1808             *lenp = wrbuf_len(c->saveAPDU_wrbuf);
1809             return wrbuf_cstr(c->saveAPDU_wrbuf);
1810         }
1811         else
1812         {
1813             *lenp = 0;
1814             return "";
1815         }
1816     }
1817     else
1818         return ZOOM_options_getl(c->options, key, lenp);
1819 }
1820
1821 ZOOM_API(void)
1822     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
1823                                const char *val)
1824 {
1825     if (!strcmp(key, "saveAPDU"))
1826     {
1827         if (val && strcmp(val, "0"))
1828         {
1829             if (!c->saveAPDU_wrbuf)
1830                 c->saveAPDU_wrbuf = wrbuf_alloc();
1831             else
1832                 wrbuf_rewind(c->saveAPDU_wrbuf);
1833         }
1834         else
1835         {
1836             wrbuf_destroy(c->saveAPDU_wrbuf);
1837             c->saveAPDU_wrbuf = 0;
1838         }
1839         ZOOM_connection_save_apdu_wrbuf(c, c->saveAPDU_wrbuf);
1840     }
1841     else
1842         ZOOM_options_set(c->options, key, val);
1843 }
1844
1845 ZOOM_API(void)
1846     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
1847                                 const char *val, int len)
1848 {
1849     ZOOM_options_setl(c->options, key, val, len);
1850 }
1851
1852 ZOOM_API(const char *)
1853     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
1854 {
1855     return ZOOM_options_get(r->options, key);
1856 }
1857
1858 ZOOM_API(void)
1859     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
1860                               const char *val)
1861 {
1862     ZOOM_options_set(r->options, key, val);
1863 }
1864
1865
1866 ZOOM_API(int)
1867     ZOOM_connection_errcode(ZOOM_connection c)
1868 {
1869     return ZOOM_connection_error(c, 0, 0);
1870 }
1871
1872 ZOOM_API(const char *)
1873     ZOOM_connection_errmsg(ZOOM_connection c)
1874 {
1875     const char *msg;
1876     ZOOM_connection_error(c, &msg, 0);
1877     return msg;
1878 }
1879
1880 ZOOM_API(const char *)
1881     ZOOM_connection_addinfo(ZOOM_connection c)
1882 {
1883     const char *addinfo;
1884     ZOOM_connection_error(c, 0, &addinfo);
1885     return addinfo;
1886 }
1887
1888 ZOOM_API(const char *)
1889     ZOOM_connection_diagset(ZOOM_connection c)
1890 {
1891     const char *diagset;
1892     ZOOM_connection_error_x(c, 0, 0, &diagset);
1893     return diagset;
1894 }
1895
1896 ZOOM_API(const char *)
1897     ZOOM_diag_str(int error)
1898 {
1899     switch (error)
1900     {
1901     case ZOOM_ERROR_NONE:
1902         return "No error";
1903     case ZOOM_ERROR_CONNECT:
1904         return "Connect failed";
1905     case ZOOM_ERROR_MEMORY:
1906         return "Out of memory";
1907     case ZOOM_ERROR_ENCODE:
1908         return "Encoding failed";
1909     case ZOOM_ERROR_DECODE:
1910         return "Decoding failed";
1911     case ZOOM_ERROR_CONNECTION_LOST:
1912         return "Connection lost";
1913     case ZOOM_ERROR_INIT:
1914         return "Init rejected";
1915     case ZOOM_ERROR_INTERNAL:
1916         return "Internal failure";
1917     case ZOOM_ERROR_TIMEOUT:
1918         return "Timeout";
1919     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
1920         return "Unsupported protocol";
1921     case ZOOM_ERROR_UNSUPPORTED_QUERY:
1922         return "Unsupported query type";
1923     case ZOOM_ERROR_INVALID_QUERY:
1924         return "Invalid query";
1925     case ZOOM_ERROR_CQL_PARSE:
1926         return "CQL parsing error";
1927     case ZOOM_ERROR_CQL_TRANSFORM:
1928         return "CQL transformation error";
1929     case ZOOM_ERROR_CCL_CONFIG:
1930         return "CCL configuration error";
1931     case ZOOM_ERROR_CCL_PARSE:
1932         return "CCL parsing error";
1933     case ZOOM_ERROR_ES_INVALID_ACTION:
1934         return "Extended Service. invalid action";
1935     case ZOOM_ERROR_ES_INVALID_VERSION:
1936         return "Extended Service. invalid version";
1937     case ZOOM_ERROR_ES_INVALID_SYNTAX:
1938         return "Extended Service. invalid syntax";
1939     default:
1940         return diagbib1_str(error);
1941     }
1942 }
1943
1944 ZOOM_API(int)
1945     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
1946                             const char **addinfo, const char **diagset)
1947 {
1948     int error = c->error;
1949     if (cp)
1950     {
1951         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
1952             *cp = ZOOM_diag_str(error);
1953         else if (!strcmp(c->diagset, "HTTP"))
1954             *cp = z_HTTP_errmsg(c->error);
1955         else if (!strcmp(c->diagset, "Bib-1"))
1956             *cp = ZOOM_diag_str(error);
1957         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
1958             *cp = yaz_diag_srw_str(c->error);
1959         else
1960             *cp = "Unknown error and diagnostic set";
1961     }
1962     if (addinfo)
1963         *addinfo = c->addinfo ? c->addinfo : "";
1964     if (diagset)
1965         *diagset = c->diagset ? c->diagset : "";
1966     return c->error;
1967 }
1968
1969 ZOOM_API(int)
1970     ZOOM_connection_error(ZOOM_connection c, const char **cp,
1971                           const char **addinfo)
1972 {
1973     return ZOOM_connection_error_x(c, cp, addinfo, 0);
1974 }
1975
1976 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
1977 {
1978     ZOOM_Event event = 0;
1979     int r = cs_look(c->cs);
1980     yaz_log(c->log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
1981             c, mask, r);
1982
1983     if (r == CS_NONE)
1984     {
1985         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1986         ZOOM_set_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1987         ZOOM_connection_close(c);
1988         ZOOM_connection_put_event(c, event);
1989     }
1990     else if (r == CS_CONNECT)
1991     {
1992         int ret = ret = cs_rcvconnect(c->cs);
1993         yaz_log(c->log_details, "%p ZOOM_connection_do_io "
1994                 "cs_rcvconnect returned %d", c, ret);
1995         if (ret == 1)
1996         {
1997             int mask = ZOOM_SELECT_EXCEPT;
1998             if (c->cs->io_pending & CS_WANT_WRITE)
1999                 mask += ZOOM_SELECT_WRITE;
2000             if (c->cs->io_pending & CS_WANT_READ)
2001                 mask += ZOOM_SELECT_READ;
2002             ZOOM_connection_set_mask(c, mask);
2003             event = ZOOM_Event_create(ZOOM_EVENT_NONE);
2004             ZOOM_connection_put_event(c, event);
2005         }
2006         else if (ret == 0)
2007         {
2008             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
2009             ZOOM_connection_put_event(c, event);
2010             get_cert(c);
2011             if (c->proto == PROTO_Z3950)
2012                 ZOOM_connection_Z3950_send_init(c);
2013             else
2014             {
2015                 /* no init request for SRW .. */
2016                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
2017                 ZOOM_connection_remove_task(c);
2018                 ZOOM_connection_set_mask(c, 0);
2019                 ZOOM_connection_exec_task(c);
2020             }
2021             c->state = STATE_ESTABLISHED;
2022         }
2023         else
2024         {
2025             ZOOM_set_error(c, ZOOM_ERROR_CONNECT, c->host_port);
2026             ZOOM_connection_close(c);
2027         }
2028     }
2029     else
2030     {
2031         if (mask & ZOOM_SELECT_EXCEPT)
2032         {
2033             if (!ZOOM_test_reconnect(c))
2034             {
2035                 ZOOM_set_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
2036                 ZOOM_connection_close(c);
2037             }
2038             return;
2039         }
2040         if (mask & ZOOM_SELECT_READ)
2041             do_read(c);
2042         if (c->cs && (mask & ZOOM_SELECT_WRITE))
2043             ZOOM_send_buf(c);
2044     }
2045 }
2046
2047 ZOOM_API(int)
2048     ZOOM_connection_last_event(ZOOM_connection cs)
2049 {
2050     if (!cs)
2051         return ZOOM_EVENT_NONE;
2052     return cs->last_event;
2053 }
2054
2055
2056 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
2057 {
2058     if (c->mask)
2059     {
2060         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
2061         /* timeout and this connection was waiting */
2062         ZOOM_set_error(c, ZOOM_ERROR_TIMEOUT, 0);
2063         ZOOM_connection_close(c);
2064         ZOOM_connection_put_event(c, event);
2065     }
2066     return 0;
2067 }
2068
2069 ZOOM_API(int)
2070     ZOOM_connection_process(ZOOM_connection c)
2071 {
2072     ZOOM_Event event;
2073     if (!c)
2074         return 0;
2075
2076     event = ZOOM_connection_get_event(c);
2077     if (event)
2078     {
2079         ZOOM_Event_destroy(event);
2080         return 1;
2081     }
2082     ZOOM_connection_exec_task(c);
2083     event = ZOOM_connection_get_event(c);
2084     if (event)
2085     {
2086         ZOOM_Event_destroy(event);
2087         return 1;
2088     }
2089     return 0;
2090 }
2091
2092 ZOOM_API(int)
2093     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
2094 {
2095     int i;
2096
2097     yaz_log(log_details0, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
2098
2099     for (i = 0; i<no; i++)
2100     {
2101         ZOOM_connection c = cs[i];
2102
2103         if (c && ZOOM_connection_process(c))
2104             return i+1;
2105     }
2106     return 0;
2107 }
2108
2109 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
2110 {
2111     if (c->mask && mask)
2112         ZOOM_connection_do_io(c, mask);
2113     return 0;
2114 }
2115
2116 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
2117 {
2118     if (c->cs)
2119         return cs_fileno(c->cs);
2120     return -1;
2121 }
2122
2123 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
2124 {
2125     c->mask = mask;
2126     if (!c->cs)
2127         return -1;
2128     return 0;
2129 }
2130
2131 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
2132 {
2133     if (c->cs)
2134         return c->mask;
2135     return 0;
2136 }
2137
2138 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
2139 {
2140     return ZOOM_options_get_int(c->options, "timeout", 30);
2141 }
2142
2143 ZOOM_API(void) ZOOM_connection_close(ZOOM_connection c)
2144 {
2145     if (c->cs)
2146         cs_close(c->cs);
2147     c->cs = 0;
2148     ZOOM_connection_set_mask(c, 0);
2149     c->state = STATE_IDLE;
2150 }
2151
2152 /*
2153  * Local variables:
2154  * c-basic-offset: 4
2155  * c-file-style: "Stroustrup"
2156  * indent-tabs-mode: nil
2157  * End:
2158  * vim: shiftwidth=4 tabstop=8 expandtab
2159  */
2160