src/zoom-c.c

   1 /*
   2  * Copyright (C) 1995-2005, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.66 2006-03-31 09:51:22 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include "zoom-p.h"
  16
  17 #include <yaz/yaz-util.h>
  18 #include <yaz/xmalloc.h>
  19 #include <yaz/otherinfo.h>
  20 #include <yaz/log.h>
  21 #include <yaz/pquery.h>
  22 #include <yaz/marcdisp.h>
  23 #include <yaz/diagbib1.h>
  24 #include <yaz/charneg.h>
  25 #include <yaz/ill.h>
  26 #include <yaz/srw.h>
  27 #include <yaz/cql.h>
  28
  29 #if HAVE_SYS_TYPES_H
  30 #include <sys/types.h>
  31 #endif
  32 #if HAVE_SYS_TIME_H
  33 #include <sys/time.h>
  34 #endif
  35 #if HAVE_SYS_POLL_H
  36 #include <sys/poll.h>
  37 #endif
  38 #if HAVE_SYS_SELECT_H
  39 #include <sys/select.h>
  40 #endif
  41 #ifdef WIN32
  42 #include <winsock.h>
  43 #endif
  44
  45 static int log_api = 0;
  46 static int log_details = 0;
  47
  48 typedef enum {
  49     zoom_pending,
  50     zoom_complete
  51 } zoom_ret;
  52
  53 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  54 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  55 static char *cql2pqf(ZOOM_connection c, const char *cql);
  56
  57 static void initlog()
  58 {
  59     static int log_level_initialized = 0;
  60     if (!log_level_initialized)
  61     {
  62         log_api = yaz_log_module_level("zoom");
  63         log_details = yaz_log_module_level("zoomdetails");
  64         log_level_initialized = 1;
  65     }
  66 }
  67
  68 static ZOOM_Event ZOOM_Event_create (int kind)
  69 {
  70     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  71     event->kind = kind;
  72     event->next = 0;
  73     event->prev = 0;
  74     return event;
  75 }
  76
  77 static void ZOOM_Event_destroy (ZOOM_Event event)
  78 {
  79     xfree (event);
  80 }
  81
  82 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  83 {
  84     if (c->m_queue_back)
  85     {
  86         c->m_queue_back->prev = event;
  87         assert (c->m_queue_front);
  88     }
  89     else
  90     {
  91         assert (!c->m_queue_front);
  92         c->m_queue_front = event;
  93     }
  94     event->next = c->m_queue_back;
  95     event->prev = 0;
  96     c->m_queue_back = event;
  97 }
  98
  99 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 100 {
 101     ZOOM_Event event = c->m_queue_front;
 102     if (!event)
 103     {
 104         c->last_event = ZOOM_EVENT_NONE;
 105         return 0;
 106     }
 107     assert (c->m_queue_back);
 108     c->m_queue_front = event->prev;
 109     if (c->m_queue_front)
 110     {
 111         assert (c->m_queue_back);
 112         c->m_queue_front->next = 0;
 113     }
 114     else
 115         c->m_queue_back = 0;
 116     c->last_event = event->kind;
 117     return event;
 118 }
 119
 120
 121 static void set_dset_error (ZOOM_connection c, int error,
 122                             const char *dset,
 123                             const char *addinfo, const char *addinfo2)
 124 {
 125     char *cp;
 126
 127     xfree (c->addinfo);
 128     c->addinfo = 0;
 129     c->error = error;
 130     if (!c->diagset || strcmp(dset, c->diagset))
 131     {
 132         xfree(c->diagset);
 133         c->diagset = xstrdup(dset);
 134         /* remove integer part from SRW diagset .. */
 135         if ((cp = strrchr(c->diagset, '/')))
 136            *cp = '\0';
 137     }
 138     if (addinfo && addinfo2)
 139     {
 140         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 141         strcpy(c->addinfo, addinfo);
 142         strcat(c->addinfo, addinfo2);
 143     }
 144     else if (addinfo)
 145         c->addinfo = xstrdup(addinfo);
 146     if (error)
 147         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 148                 c, c->host_port ? c->host_port : "<>", dset, error,
 149                 addinfo ? addinfo : "",
 150                 addinfo2 ? addinfo2 : "");
 151 }
 152
 153 #if HAVE_XML2
 154 static void set_HTTP_error (ZOOM_connection c, int error,
 155                             const char *addinfo, const char *addinfo2)
 156 {
 157     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 158 }
 159 #endif
 160
 161 static void set_ZOOM_error (ZOOM_connection c, int error,
 162                             const char *addinfo)
 163 {
 164     set_dset_error(c, error, "ZOOM", addinfo, 0);
 165 }
 166
 167 static void clear_error (ZOOM_connection c)
 168 {
 169     /*
 170      * If an error is tied to an operation then it's ok to clear: for
 171      * example, a diagnostic returned from a search is cleared by a
 172      * subsequent search.  However, problems such as Connection Lost
 173      * or Init Refused are not cleared, because they are not
 174      * recoverable: doing another search doesn't help.
 175      */
 176     switch (c->error)
 177     {
 178     case ZOOM_ERROR_CONNECT:
 179     case ZOOM_ERROR_MEMORY:
 180     case ZOOM_ERROR_DECODE:
 181     case ZOOM_ERROR_CONNECTION_LOST:
 182     case ZOOM_ERROR_INIT:
 183     case ZOOM_ERROR_INTERNAL:
 184     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 185         break;
 186     default:
 187         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 188     }
 189 }
 190
 191 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 192 {
 193     ZOOM_task *taskp = &c->tasks;
 194     while (*taskp)
 195         taskp = &(*taskp)->next;
 196     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 197     (*taskp)->running = 0;
 198     (*taskp)->which = which;
 199     (*taskp)->next = 0;
 200     clear_error (c);
 201     return *taskp;
 202 }
 203
 204 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 205 {
 206     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 207
 208     task->next = c->tasks;
 209     c->tasks = task;
 210
 211     task->running = 0;
 212     task->which = which;
 213     clear_error (c);
 214     return task;
 215 }
 216
 217 void ZOOM_connection_remove_task (ZOOM_connection c)
 218 {
 219     ZOOM_task task = c->tasks;
 220
 221     if (task)
 222     {
 223         c->tasks = task->next;
 224         switch (task->which)
 225         {
 226         case ZOOM_TASK_SEARCH:
 227             ZOOM_resultset_destroy (task->u.search.resultset);
 228             break;
 229         case ZOOM_TASK_RETRIEVE:
 230             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 231             break;
 232         case ZOOM_TASK_CONNECT:
 233             break;
 234         case ZOOM_TASK_SCAN:
 235             ZOOM_scanset_destroy (task->u.scan.scan);
 236             break;
 237         case ZOOM_TASK_PACKAGE:
 238             ZOOM_package_destroy (task->u.package);
 239             break;
 240         case ZOOM_TASK_SORT:
 241             ZOOM_resultset_destroy (task->u.sort.resultset);
 242             ZOOM_query_destroy(task->u.sort.q);
 243             break;
 244         default:
 245             assert (0);
 246         }
 247         xfree (task);
 248     }
 249 }
 250
 251 static int ZOOM_connection_exec_task (ZOOM_connection c);
 252
 253 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 254 {
 255     while (c->tasks)
 256         ZOOM_connection_remove_task(c);
 257 }
 258
 259 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 260
 261 ZOOM_API(ZOOM_connection)
 262 ZOOM_connection_create (ZOOM_options options)
 263 {
 264     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 265
 266     initlog();
 267
 268     yaz_log(log_api, "%p ZOOM_connection_create", c);
 269
 270     c->proto = PROTO_Z3950;
 271     c->cs = 0;
 272     c->mask = 0;
 273     c->reconnect_ok = 0;
 274     c->state = STATE_IDLE;
 275     c->addinfo = 0;
 276     c->diagset = 0;
 277     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 278     c->buf_in = 0;
 279     c->len_in = 0;
 280     c->buf_out = 0;
 281     c->len_out = 0;
 282     c->resultsets = 0;
 283
 284     c->options = ZOOM_options_create_with_parent(options);
 285
 286     c->host_port = 0;
 287     c->path = 0;
 288     c->proxy = 0;
 289
 290     c->charset = c->lang = 0;
 291
 292     c->cookie_out = 0;
 293     c->cookie_in = 0;
 294     c->client_IP = 0;
 295     c->tasks = 0;
 296
 297     c->odr_in = odr_createmem (ODR_DECODE);
 298     c->odr_out = odr_createmem (ODR_ENCODE);
 299
 300     c->async = 0;
 301     c->support_named_resultsets = 0;
 302     c->last_event = ZOOM_EVENT_NONE;
 303
 304     c->m_queue_front = 0;
 305     c->m_queue_back = 0;
 306     return c;
 307 }
 308
 309 /* set database names. Take local databases (if set); otherwise
 310    take databases given in ZURL (if set); otherwise use Default */
 311 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 312                                  int *num)
 313 {
 314     char **databaseNames;
 315     const char *cp = ZOOM_options_get (options, "databaseName");
 316
 317     if ((!cp || !*cp) && con->host_port)
 318     {
 319         if (strncmp (con->host_port, "unix:", 5) == 0)
 320             cp = strchr(con->host_port+5, ':');
 321         else
 322             cp = strchr(con->host_port, '/');
 323         if (cp)
 324             cp++;
 325     }
 326     if (!cp)
 327         cp = "Default";
 328     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 329     return databaseNames;
 330 }
 331
 332 ZOOM_API(ZOOM_connection)
 333 ZOOM_connection_new (const char *host, int portnum)
 334 {
 335     ZOOM_connection c = ZOOM_connection_create (0);
 336
 337     ZOOM_connection_connect (c, host, portnum);
 338     return c;
 339 }
 340
 341 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 342 {
 343     if (!s || !*s)
 344         return zoom_sru_soap;
 345     if (!yaz_matchstr(s, "soap"))
 346         return zoom_sru_soap;
 347     else if (!yaz_matchstr(s, "get"))
 348         return zoom_sru_get;
 349     else if (!yaz_matchstr(s, "post"))
 350         return zoom_sru_post;
 351     return zoom_sru_error;
 352 }
 353
 354 ZOOM_API(void)
 355 ZOOM_connection_connect(ZOOM_connection c,
 356                         const char *host, int portnum)
 357 {
 358     const char *val;
 359     ZOOM_task task;
 360
 361     initlog();
 362
 363     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 364             c, host, portnum);
 365
 366     if (c->cs)
 367     {
 368         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 369         c->reconnect_ok = 1;
 370         return;
 371     }
 372     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 373     xfree (c->proxy);
 374     val = ZOOM_options_get (c->options, "proxy");
 375     if (val && *val)
 376     {
 377         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 378         c->proxy = xstrdup (val);
 379     }
 380     else
 381         c->proxy = 0;
 382
 383     xfree (c->charset);
 384     val = ZOOM_options_get (c->options, "charset");
 385     if (val && *val)
 386     {
 387         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 388         c->charset = xstrdup (val);
 389     }
 390     else
 391         c->charset = 0;
 392
 393     xfree (c->lang);
 394     val = ZOOM_options_get (c->options, "lang");
 395     if (val && *val)
 396     {
 397         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 398         c->lang = xstrdup (val);
 399     }
 400     else
 401         c->lang = 0;
 402
 403     val = ZOOM_options_get (c->options, "sru");
 404     c->sru_mode = get_sru_mode_from_string(val);
 405
 406     xfree (c->host_port);
 407     if (portnum)
 408     {
 409         char hostn[128];
 410         sprintf (hostn, "%.80s:%d", host, portnum);
 411         c->host_port = xstrdup(hostn);
 412     }
 413     else
 414         c->host_port = xstrdup(host);
 415
 416     {
 417         /*
 418          * If the "<scheme>:" part of the host string is preceded by one
 419          * or more comma-separated <name>=<value> pairs, these are taken
 420          * to be options to be set on the connection object.  Among other
 421          * applications, this facility can be used to embed authentication
 422          * in a host string:
 423          *          user=admin,password=secret,tcp:localhost:9999
 424          */
 425         char *remainder = c->host_port;
 426         char *pcolon = strchr(remainder, ':');
 427         char *pcomma;
 428         char *pequals;
 429         while ((pcomma = strchr(remainder, ',')) != 0 &&
 430                (pcolon == 0 || pcomma < pcolon)) {
 431             *pcomma = '\0';
 432             if ((pequals = strchr(remainder, '=')) != 0) {
 433                 *pequals = '\0';
 434                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 435                 ZOOM_connection_option_set(c, remainder, pequals+1);
 436             }
 437             remainder = pcomma+1;
 438         }
 439
 440         if (remainder != c->host_port) {
 441             xfree(c->host_port);
 442             c->host_port = xstrdup(remainder);
 443             /*printf("# reset hp='%s'\n", remainder);*/
 444         }
 445     }
 446
 447     ZOOM_options_set(c->options, "host", c->host_port);
 448
 449     val = ZOOM_options_get (c->options, "cookie");
 450     if (val && *val)
 451     {
 452         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 453         c->cookie_out = xstrdup (val);
 454     }
 455
 456     val = ZOOM_options_get (c->options, "clientIP");
 457     if (val && *val)
 458     {
 459         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 460                 c, val);
 461         c->client_IP = xstrdup (val);
 462     }
 463
 464     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 465     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 466
 467     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 468
 469     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 470
 471     if (!c->async)
 472     {
 473         while (ZOOM_event (1, &c))
 474             ;
 475     }
 476 }
 477
 478 ZOOM_API(ZOOM_query)
 479 ZOOM_query_create(void)
 480 {
 481     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 482
 483     yaz_log(log_details, "%p ZOOM_query_create", s);
 484     s->refcount = 1;
 485     s->z_query = 0;
 486     s->sort_spec = 0;
 487     s->odr = odr_createmem (ODR_ENCODE);
 488     s->query_string = 0;
 489
 490     return s;
 491 }
 492
 493 ZOOM_API(void)
 494 ZOOM_query_destroy(ZOOM_query s)
 495 {
 496     if (!s)
 497         return;
 498
 499     (s->refcount)--;
 500     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 501     if (s->refcount == 0)
 502     {
 503         odr_destroy (s->odr);
 504         xfree (s);
 505     }
 506 }
 507
 508 ZOOM_API(int)
 509 ZOOM_query_prefix(ZOOM_query s, const char *str)
 510 {
 511     s->query_string = odr_strdup(s->odr, str);
 512     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 513     s->z_query->which = Z_Query_type_1;
 514     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 515     if (!s->z_query->u.type_1)
 516     {
 517         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 518         s->z_query = 0;
 519         return -1;
 520     }
 521     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 522     return 0;
 523 }
 524
 525 ZOOM_API(int)
 526 ZOOM_query_cql(ZOOM_query s, const char *str)
 527 {
 528     Z_External *ext;
 529
 530     s->query_string = odr_strdup(s->odr, str);
 531
 532     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 533     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 534     ext->indirect_reference = 0;
 535     ext->descriptor = 0;
 536     ext->which = Z_External_CQL;
 537     ext->u.cql = s->query_string;
 538
 539     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 540     s->z_query->which = Z_Query_type_104;
 541     s->z_query->u.type_104 =  ext;
 542
 543     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 544
 545     return 0;
 546 }
 547
 548 /*
 549  * Translate the CQL string client-side into RPN which is passed to
 550  * the server.  This is useful for server's that don't themselves
 551  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 552  * only as a place to stash diagnostics if compilation fails; if this
 553  * information is not needed, a null pointer may be used.
 554  */
 555 ZOOM_API(int)
 556 ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 557 {
 558     char *rpn;
 559     int ret;
 560
 561     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 562     if (conn == 0)
 563         conn = ZOOM_connection_create(0);
 564
 565     if ((rpn = cql2pqf(conn, str)) == 0)
 566         return -1;
 567
 568     ret = ZOOM_query_prefix(s, rpn);
 569     xfree(rpn);
 570     return ret;
 571 }
 572
 573 ZOOM_API(int)
 574 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 575 {
 576     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 577     if (!s->sort_spec)
 578     {
 579         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 580                 s, criteria);
 581         return -1;
 582     }
 583     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 584     return 0;
 585 }
 586
 587 static zoom_ret do_write(ZOOM_connection c);
 588
 589 ZOOM_API(void)
 590 ZOOM_connection_destroy(ZOOM_connection c)
 591 {
 592     ZOOM_resultset r;
 593     if (!c)
 594         return;
 595     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 596     if (c->cs)
 597         cs_close (c->cs);
 598     for (r = c->resultsets; r; r = r->next)
 599         r->connection = 0;
 600
 601     xfree (c->buf_in);
 602     xfree (c->addinfo);
 603     xfree (c->diagset);
 604     odr_destroy (c->odr_in);
 605     odr_destroy (c->odr_out);
 606     ZOOM_options_destroy (c->options);
 607     ZOOM_connection_remove_tasks (c);
 608     xfree (c->host_port);
 609     xfree (c->path);
 610     xfree (c->proxy);
 611     xfree (c->charset);
 612     xfree (c->lang);
 613     xfree (c->cookie_out);
 614     xfree (c->cookie_in);
 615     xfree (c->client_IP);
 616     xfree (c);
 617 }
 618
 619 void ZOOM_resultset_addref (ZOOM_resultset r)
 620 {
 621     if (r)
 622     {
 623         (r->refcount)++;
 624         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 625                 r, r->refcount);
 626     }
 627 }
 628
 629 ZOOM_resultset ZOOM_resultset_create ()
 630 {
 631     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 632
 633     initlog();
 634
 635     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 636     r->refcount = 1;
 637     r->size = 0;
 638     r->odr = odr_createmem (ODR_ENCODE);
 639     r->start = 0;
 640     r->piggyback = 1;
 641     r->setname = 0;
 642     r->schema = 0;
 643     r->count = 0;
 644     r->step = 0;
 645     r->record_cache = 0;
 646     r->r_sort_spec = 0;
 647     r->query = 0;
 648     r->connection = 0;
 649     r->next = 0;
 650     return r;
 651 }
 652
 653 ZOOM_API(ZOOM_resultset)
 654 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 655 {
 656     ZOOM_resultset r;
 657     ZOOM_query s = ZOOM_query_create();
 658
 659     ZOOM_query_prefix (s, q);
 660
 661     r = ZOOM_connection_search (c, s);
 662     ZOOM_query_destroy (s);
 663     return r;
 664 }
 665
 666 ZOOM_API(ZOOM_resultset)
 667 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 668 {
 669     ZOOM_resultset r = ZOOM_resultset_create ();
 670     ZOOM_task task;
 671     const char *cp;
 672
 673     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 674     r->r_sort_spec = q->sort_spec;
 675     r->query = q;
 676
 677     r->options = ZOOM_options_create_with_parent(c->options);
 678
 679     r->start = ZOOM_options_get_int(r->options, "start", 0);
 680     r->count = ZOOM_options_get_int(r->options, "count", 0);
 681     {
 682         /* If "presentChunk" is defined use that; otherwise "step" */
 683         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 684         r->step = ZOOM_options_get_int(r->options,
 685                                        (cp != 0 ? "presentChunk": "step"), 0);
 686     }
 687     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 688     cp = ZOOM_options_get (r->options, "setname");
 689     if (cp)
 690         r->setname = xstrdup(cp);
 691     cp = ZOOM_options_get (r->options, "schema");
 692     if (cp)
 693         r->schema = xstrdup(cp);
 694
 695     r->connection = c;
 696
 697     r->next = c->resultsets;
 698     c->resultsets = r;
 699
 700     if (c->host_port && c->proto == PROTO_HTTP)
 701     {
 702         if (!c->cs)
 703         {
 704             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 705             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 706         }
 707         else
 708         {
 709             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 710             c->reconnect_ok = 1;
 711         }
 712     }
 713
 714     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 715     task->u.search.resultset = r;
 716     ZOOM_resultset_addref (r);
 717
 718     (q->refcount)++;
 719
 720     if (!c->async)
 721     {
 722         while (ZOOM_event (1, &c))
 723             ;
 724     }
 725     return r;
 726 }
 727
 728 /*
 729  * This is the old result-set sorting API, which is maintained only
 730  * for the sake of binary compatibility.  There is no reason ever to
 731  * use this rather than ZOOM_resultset_sort1().
 732  */
 733 ZOOM_API(void)
 734 ZOOM_resultset_sort(ZOOM_resultset r,
 735                     const char *sort_type, const char *sort_spec)
 736 {
 737     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 738 }
 739
 740 ZOOM_API(int)
 741 ZOOM_resultset_sort1(ZOOM_resultset r,
 742                      const char *sort_type, const char *sort_spec)
 743 {
 744     ZOOM_connection c = r->connection;
 745     ZOOM_task task;
 746     ZOOM_query newq;
 747
 748     newq = ZOOM_query_create();
 749     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 750         return -1;
 751
 752     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 753             r, r, sort_type, sort_spec);
 754     if (!c)
 755         return 0;
 756
 757     if (c->host_port && c->proto == PROTO_HTTP)
 758     {
 759         if (!c->cs)
 760         {
 761             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 762             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 763         }
 764         else
 765         {
 766             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 767                     r);
 768             c->reconnect_ok = 1;
 769         }
 770     }
 771
 772     ZOOM_resultset_cache_reset(r);
 773     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 774     task->u.sort.resultset = r;
 775     task->u.sort.q = newq;
 776
 777     ZOOM_resultset_addref (r);
 778
 779     if (!c->async)
 780     {
 781         while (ZOOM_event (1, &c))
 782             ;
 783     }
 784
 785     return 0;
 786 }
 787
 788 ZOOM_API(void)
 789     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 790 {
 791     ZOOM_record_cache rc;
 792
 793     for (rc = r->record_cache; rc; rc = rc->next)
 794     {
 795         if (rc->rec.wrbuf_marc)
 796             wrbuf_free (rc->rec.wrbuf_marc, 1);
 797         if (rc->rec.wrbuf_iconv)
 798             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 799         if (rc->rec.wrbuf_opac)
 800             wrbuf_free (rc->rec.wrbuf_opac, 1);
 801     }
 802     r->record_cache = 0;
 803 }
 804
 805 ZOOM_API(void)
 806 ZOOM_resultset_destroy(ZOOM_resultset r)
 807 {
 808     if (!r)
 809         return;
 810     (r->refcount)--;
 811     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 812             r, r, r->refcount);
 813     if (r->refcount == 0)
 814     {
 815         ZOOM_resultset_cache_reset(r);
 816
 817         if (r->connection)
 818         {
 819             /* remove ourselves from the resultsets in connection */
 820             ZOOM_resultset *rp = &r->connection->resultsets;
 821             while (1)
 822             {
 823                 assert (*rp);   /* we must be in this list!! */
 824                 if (*rp == r)
 825                 {   /* OK, we're here - take us out of it */
 826                     *rp = (*rp)->next;
 827                     break;
 828                 }
 829                 rp = &(*rp)->next;
 830             }
 831         }
 832         ZOOM_query_destroy (r->query);
 833         ZOOM_options_destroy (r->options);
 834         odr_destroy (r->odr);
 835         xfree (r->setname);
 836         xfree (r->schema);
 837         xfree (r);
 838     }
 839 }
 840
 841 ZOOM_API(size_t)
 842 ZOOM_resultset_size (ZOOM_resultset r)
 843 {
 844     return r->size;
 845 }
 846
 847 static void do_close (ZOOM_connection c)
 848 {
 849     if (c->cs)
 850         cs_close(c->cs);
 851     c->cs = 0;
 852     c->mask = 0;
 853     c->state = STATE_IDLE;
 854 }
 855
 856 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 857                                      int force_sync, int start, int count)
 858 {
 859     ZOOM_task task;
 860     ZOOM_connection c;
 861     const char *cp;
 862
 863     if (!r)
 864         return;
 865     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 866             " count=%d", r, force_sync, start, count);
 867     c = r->connection;
 868     if (!c)
 869         return;
 870
 871     if (c->host_port && c->proto == PROTO_HTTP)
 872     {
 873         if (!c->cs)
 874         {
 875             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 876             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 877         }
 878         else
 879         {
 880             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 881                     "reconnect", r);
 882             c->reconnect_ok = 1;
 883         }
 884     }
 885     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 886     task->u.retrieve.resultset = r;
 887     task->u.retrieve.start = start;
 888     task->u.retrieve.count = count;
 889
 890     cp = ZOOM_options_get (r->options, "schema");
 891     if (cp)
 892     {
 893         if (!r->schema || strcmp(r->schema, cp))
 894         {
 895             xfree(r->schema);
 896             r->schema = xstrdup(cp);
 897         }
 898     }
 899
 900     ZOOM_resultset_addref (r);
 901
 902     if (!r->connection->async || force_sync)
 903         while (r->connection && ZOOM_event (1, &r->connection))
 904             ;
 905 }
 906
 907 ZOOM_API(void)
 908 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 909                         size_t start, size_t count)
 910 {
 911     int force_present = 0;
 912
 913     if (!r)
 914         return ;
 915     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%d count=%d",
 916             r, r, start, count);
 917     if (count && recs)
 918         force_present = 1;
 919     ZOOM_resultset_retrieve (r, force_present, start, count);
 920     if (force_present)
 921     {
 922         size_t i;
 923         for (i = 0; i< count; i++)
 924             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 925     }
 926 }
 927
 928 static void get_cert(ZOOM_connection c)
 929 {
 930     char *cert_buf;
 931     int cert_len;
 932
 933     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 934     {
 935         ZOOM_connection_option_setl(c, "sslPeerCert",
 936                                     cert_buf, cert_len);
 937         xfree(cert_buf);
 938     }
 939 }
 940
 941 static zoom_ret do_connect (ZOOM_connection c)
 942 {
 943     void *add;
 944     const char *effective_host;
 945
 946     if (c->proxy)
 947         effective_host = c->proxy;
 948     else
 949         effective_host = c->host_port;
 950
 951     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
 952
 953     if (c->cs)
 954         cs_close(c->cs);
 955     c->cs = cs_create_host (effective_host, 0, &add);
 956
 957     if (c->cs && c->cs->protocol == PROTO_HTTP)
 958     {
 959 #if HAVE_XML2
 960         const char *path = 0;
 961
 962         c->proto = PROTO_HTTP;
 963         cs_get_host_args(c->host_port, &path);
 964         xfree(c->path);
 965         c->path = (char*) xmalloc(strlen(path)+2);
 966         c->path[0] = '/';
 967         strcpy (c->path+1, path);
 968 #else
 969         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 970         do_close(c);
 971         return zoom_complete;
 972 #endif
 973     }
 974     if (c->cs)
 975     {
 976         int ret = cs_connect (c->cs, add);
 977         if (ret == 0)
 978         {
 979             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 980             ZOOM_connection_put_event(c, event);
 981             get_cert(c);
 982             if (c->proto == PROTO_Z3950)
 983                 ZOOM_connection_send_init(c);
 984             else
 985             {
 986                 /* no init request for SRW .. */
 987                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 988                 ZOOM_connection_remove_task (c);
 989                 c->mask = 0;
 990                 ZOOM_connection_exec_task (c);
 991             }
 992             c->state = STATE_ESTABLISHED;
 993             return zoom_pending;
 994         }
 995         else if (ret > 0)
 996         {
 997             c->state = STATE_CONNECTING;
 998             c->mask = ZOOM_SELECT_EXCEPT;
 999             if (c->cs->io_pending & CS_WANT_WRITE)
1000                 c->mask += ZOOM_SELECT_WRITE;
1001             if (c->cs->io_pending & CS_WANT_READ)
1002                 c->mask += ZOOM_SELECT_READ;
1003             return zoom_pending;
1004         }
1005     }
1006     c->state = STATE_IDLE;
1007     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1008     return zoom_complete;
1009 }
1010
1011 int z3950_connection_socket(ZOOM_connection c)
1012 {
1013     if (c->cs)
1014         return cs_fileno(c->cs);
1015     return -1;
1016 }
1017
1018 int z3950_connection_mask(ZOOM_connection c)
1019 {
1020     if (c->cs)
1021         return c->mask;
1022     return 0;
1023 }
1024
1025 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
1026 {
1027     int i;
1028     for (i = 0; i<200; i++)
1029     {
1030         size_t len;
1031         Z_OtherInformation **oi;
1032         char buf[80];
1033         const char *val;
1034         const char *cp;
1035         int oidval;
1036
1037         sprintf (buf, "otherInfo%d", i);
1038         val = ZOOM_options_get (c->options, buf);
1039         if (!val)
1040             break;
1041         cp = strchr(val, ':');
1042         if (!cp)
1043             continue;
1044         len = cp - val;
1045         if (len >= sizeof(buf))
1046             len = sizeof(buf)-1;
1047         memcpy (buf, val, len);
1048         buf[len] = '\0';
1049         oidval = oid_getvalbyname (buf);
1050         if (oidval == VAL_NONE)
1051             continue;
1052
1053         yaz_oi_APDU(a, &oi);
1054         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1055     }
1056 }
1057
1058 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1059 {
1060     assert (a);
1061     if (c->cookie_out)
1062     {
1063         Z_OtherInformation **oi;
1064         yaz_oi_APDU(a, &oi);
1065         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1066     }
1067     if (c->client_IP)
1068     {
1069         Z_OtherInformation **oi;
1070         yaz_oi_APDU(a, &oi);
1071         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1072     }
1073     otherInfo_attach (c, a, out);
1074     if (!z_APDU(out, &a, 0, 0))
1075     {
1076         FILE *outf = fopen("/tmp/apdu.txt", "a");
1077         if (a && outf)
1078         {
1079             ODR odr_pr = odr_createmem(ODR_PRINT);
1080             fprintf (outf, "a=%p\n", a);
1081             odr_setprint(odr_pr, outf);
1082             z_APDU(odr_pr, &a, 0, 0);
1083             odr_destroy(odr_pr);
1084         }
1085         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1086         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1087         odr_reset(out);
1088         return -1;
1089     }
1090     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1091     return 0;
1092 }
1093
1094 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
1095 {
1096     ZOOM_Event event;
1097     assert (a);
1098     if (encode_APDU(c, a, c->odr_out))
1099         return zoom_complete;
1100     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1101     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1102     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1103     ZOOM_connection_put_event (c, event);
1104     odr_reset(c->odr_out);
1105     return do_write (c);
1106 }
1107
1108 /* returns 1 if PDU was sent OK (still pending )
1109            0 if PDU was not sent OK (nothing to wait for)
1110 */
1111
1112 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1113 {
1114     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1115     Z_InitRequest *ireq = apdu->u.initRequest;
1116     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1117         odr_malloc(c->odr_out, sizeof(*auth));
1118     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1119     const char *auth_userId = ZOOM_options_get (c->options, "user");
1120     const char *auth_password = ZOOM_options_get (c->options, "password");
1121     char *version;
1122
1123     /* support the pass for backwards compatibility */
1124     if (!auth_password)
1125         auth_password = ZOOM_options_get (c->options, "pass");
1126
1127     ODR_MASK_SET(ireq->options, Z_Options_search);
1128     ODR_MASK_SET(ireq->options, Z_Options_present);
1129     ODR_MASK_SET(ireq->options, Z_Options_scan);
1130     ODR_MASK_SET(ireq->options, Z_Options_sort);
1131     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1132     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1133
1134     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1135     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1136     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1137
1138     /* Index Data's Z39.50 Implementor Id is 81 */
1139     ireq->implementationId = odr_prepend(c->odr_out,
1140         ZOOM_options_get(c->options, "implementationId"),
1141         odr_prepend(c->odr_out, "81", ireq->implementationId));
1142
1143     ireq->implementationName = odr_prepend(c->odr_out,
1144         ZOOM_options_get(c->options, "implementationName"),
1145         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1146
1147     version = odr_strdup(c->odr_out, "$Revision: 1.66 $");
1148     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1149         version[strlen(version)-2] = '\0';
1150     ireq->implementationVersion = odr_prepend(c->odr_out,
1151         ZOOM_options_get(c->options, "implementationVersion"),
1152         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1153
1154     *ireq->maximumRecordSize =
1155         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1156     *ireq->preferredMessageSize =
1157         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1158
1159     if (auth_groupId || auth_password)
1160     {
1161         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1162         int i = 0;
1163         pass->groupId = 0;
1164         if (auth_groupId && *auth_groupId)
1165         {
1166             pass->groupId = (char *)
1167                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1168             strcpy(pass->groupId, auth_groupId);
1169             i++;
1170         }
1171         pass->userId = 0;
1172         if (auth_userId && *auth_userId)
1173         {
1174             pass->userId = (char *)
1175                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1176             strcpy(pass->userId, auth_userId);
1177             i++;
1178         }
1179         pass->password = 0;
1180         if (auth_password && *auth_password)
1181         {
1182             pass->password = (char *)
1183                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1184             strcpy(pass->password, auth_password);
1185             i++;
1186         }
1187         if (i)
1188         {
1189             auth->which = Z_IdAuthentication_idPass;
1190             auth->u.idPass = pass;
1191             ireq->idAuthentication = auth;
1192         }
1193     }
1194     else if (auth_userId)
1195     {
1196         auth->which = Z_IdAuthentication_open;
1197         auth->u.open = (char *)
1198             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1199         strcpy(auth->u.open, auth_userId);
1200         ireq->idAuthentication = auth;
1201     }
1202     if (c->proxy)
1203         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1204                                  VAL_PROXY, 1, c->host_port);
1205     if (c->charset || c->lang)
1206     {
1207         Z_OtherInformation **oi;
1208         Z_OtherInformationUnit *oi_unit;
1209
1210         yaz_oi_APDU(apdu, &oi);
1211
1212         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1213         {
1214             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1215             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1216             oi_unit->information.externallyDefinedInfo =
1217                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1218                                               c->charset, c->lang, 1);
1219         }
1220     }
1221     assert (apdu);
1222     return send_APDU (c, apdu);
1223 }
1224
1225 #if HAVE_XML2
1226 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1227 {
1228     Z_SOAP_Handler h[2] = {
1229         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1230         {0, 0, 0}
1231     };
1232     ODR o = odr_createmem(ODR_ENCODE);
1233     int ret;
1234     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1235     Z_GDU *gdu;
1236     ZOOM_Event event;
1237
1238     gdu = z_get_HTTP_Request(c->odr_out);
1239     gdu->u.HTTP_Request->path = c->path;
1240
1241     if (c->host_port)
1242     {
1243         const char *cp0 = strstr(c->host_port, "://");
1244         const char *cp1 = 0;
1245         if (cp0)
1246             cp0 = cp0+3;
1247         else
1248             cp0 = c->host_port;
1249
1250         cp1 = strchr(cp0, '/');
1251         if (!cp1)
1252             cp1 = cp0+strlen(cp0);
1253
1254         if (cp0 && cp1)
1255         {
1256             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1257             memcpy (h, cp0, cp1 - cp0);
1258             h[cp1-cp0] = '\0';
1259             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1260                               "Host", h);
1261         }
1262     }
1263
1264     if (c->sru_mode == zoom_sru_get)
1265     {
1266         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1267     }
1268     else if (c->sru_mode == zoom_sru_post)
1269     {
1270         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1271     }
1272     else if (c->sru_mode == zoom_sru_soap)
1273     {
1274         z_HTTP_header_add_content_type(c->odr_out,
1275                                        &gdu->u.HTTP_Request->headers,
1276                                        "text/xml", c->charset);
1277
1278         z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1279                           "SOAPAction", "\"\"");
1280         p->which = Z_SOAP_generic;
1281         p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1282         p->u.generic->no = 0;
1283         p->u.generic->ns = 0;
1284         p->u.generic->p = sr;
1285         p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1286
1287         ret = z_soap_codec_enc(o, &p,
1288                                &gdu->u.HTTP_Request->content_buf,
1289                                &gdu->u.HTTP_Request->content_len, h,
1290                                c->charset);
1291
1292     }
1293     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1294         return zoom_complete;
1295     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1296     odr_destroy(o);
1297
1298     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1299     ZOOM_connection_put_event (c, event);
1300     odr_reset(c->odr_out);
1301     return do_write (c);
1302 }
1303 #endif
1304
1305 #if HAVE_XML2
1306 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1307 {
1308     int i;
1309     ZOOM_resultset resultset = 0;
1310     Z_SRW_PDU *sr = 0;
1311     const char *recordPacking = 0;
1312
1313     if (c->error)                  /* don't continue on error */
1314         return zoom_complete;
1315     assert (c->tasks);
1316     if (c->tasks->which == ZOOM_TASK_SEARCH)
1317     {
1318         resultset = c->tasks->u.search.resultset;
1319         resultset->setname = xstrdup ("default");
1320         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1321     }
1322     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1323     {
1324         resultset = c->tasks->u.retrieve.resultset;
1325
1326         resultset->start = c->tasks->u.retrieve.start;
1327         resultset->count = c->tasks->u.retrieve.count;
1328
1329         if (resultset->start >= resultset->size)
1330             return zoom_complete;
1331         if (resultset->start + resultset->count > resultset->size)
1332             resultset->count = resultset->size - resultset->start;
1333
1334         for (i = 0; i<resultset->count; i++)
1335         {
1336             ZOOM_record rec =
1337                 record_cache_lookup (resultset, i + resultset->start);
1338             if (!rec)
1339                 break;
1340         }
1341         if (i == resultset->count)
1342             return zoom_complete;
1343     }
1344     assert(resultset->query);
1345
1346     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1347
1348     if (resultset->query->z_query->which == Z_Query_type_104
1349         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1350     {
1351
1352         sr->u.request->query_type = Z_SRW_query_type_cql;
1353         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1354     }
1355     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1356              resultset->query->z_query->u.type_1)
1357     {
1358         sr->u.request->query_type = Z_SRW_query_type_pqf;
1359         sr->u.request->query.pqf = resultset->query->query_string;
1360     }
1361     else
1362     {
1363         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1364         return zoom_complete;
1365     }
1366     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1367     sr->u.request->maximumRecords = odr_intdup (
1368         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1369     sr->u.request->recordSchema = resultset->schema;
1370
1371     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1372
1373     if (recordPacking)
1374         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1375
1376     return send_srw(c, sr);
1377 }
1378 #else
1379 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1380 {
1381     return zoom_complete;
1382 }
1383 #endif
1384
1385 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1386 {
1387     ZOOM_resultset r;
1388     int lslb, ssub, mspn;
1389     const char *syntax;
1390     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1391     Z_SearchRequest *search_req = apdu->u.searchRequest;
1392     const char *elementSetName;
1393     const char *smallSetElementSetName;
1394     const char *mediumSetElementSetName;
1395
1396     assert (c->tasks);
1397     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1398
1399     r = c->tasks->u.search.resultset;
1400
1401     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1402
1403     elementSetName =
1404         ZOOM_options_get (r->options, "elementSetName");
1405     smallSetElementSetName  =
1406         ZOOM_options_get (r->options, "smallSetElementSetName");
1407     mediumSetElementSetName =
1408         ZOOM_options_get (r->options, "mediumSetElementSetName");
1409
1410     if (!smallSetElementSetName)
1411         smallSetElementSetName = elementSetName;
1412
1413     if (!mediumSetElementSetName)
1414         mediumSetElementSetName = elementSetName;
1415
1416     assert (r);
1417     assert (r->query);
1418
1419     /* prepare query for the search request */
1420     search_req->query = r->query->z_query;
1421     if (!search_req->query)
1422     {
1423         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1424         return zoom_complete;
1425     }
1426
1427     search_req->databaseNames =
1428         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1429
1430     /* get syntax (no need to provide unless piggyback is in effect) */
1431     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1432
1433     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1434     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1435     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1436     if (lslb != -1 && ssub != -1 && mspn != -1)
1437     {
1438         /* So're a Z39.50 expert? Let's hope you don't do sort */
1439         *search_req->largeSetLowerBound = lslb;
1440         *search_req->smallSetUpperBound = ssub;
1441         *search_req->mediumSetPresentNumber = mspn;
1442     }
1443     else if (r->start == 0 && r->count > 0
1444              && r->piggyback && !r->r_sort_spec && !r->schema)
1445     {
1446         /* Regular piggyback - do it unless we're going to do sort */
1447         *search_req->largeSetLowerBound = 2000000000;
1448         *search_req->smallSetUpperBound = 1;
1449         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1450     }
1451     else
1452     {
1453         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1454         smallSetElementSetName = 0;
1455         mediumSetElementSetName = 0;
1456         syntax = 0;
1457     }
1458     if (smallSetElementSetName && *smallSetElementSetName)
1459     {
1460         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1461             odr_malloc (c->odr_out, sizeof(*esn));
1462
1463         esn->which = Z_ElementSetNames_generic;
1464         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1465         search_req->smallSetElementSetNames = esn;
1466     }
1467     if (mediumSetElementSetName && *mediumSetElementSetName)
1468     {
1469         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1470             odr_malloc (c->odr_out, sizeof(*esn));
1471
1472         esn->which = Z_ElementSetNames_generic;
1473         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1474         search_req->mediumSetElementSetNames = esn;
1475     }
1476     if (syntax)
1477         search_req->preferredRecordSyntax =
1478             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1479
1480     if (!r->setname)
1481     {
1482         if (c->support_named_resultsets)
1483         {
1484             char setname[14];
1485             int ord;
1486             /* find the lowest unused ordinal so that we re-use
1487                result sets on the server. */
1488             for (ord = 1; ; ord++)
1489             {
1490                 ZOOM_resultset rp;
1491                 sprintf (setname, "%d", ord);
1492                 for (rp = c->resultsets; rp; rp = rp->next)
1493                     if (rp->setname && !strcmp (rp->setname, setname))
1494                         break;
1495                 if (!rp)
1496                     break;
1497             }
1498             r->setname = xstrdup (setname);
1499             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1500                     "set %s", c, r->setname);
1501         }
1502         else
1503         {
1504             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1505                     "default set", c);
1506             r->setname = xstrdup ("default");
1507         }
1508         ZOOM_options_set (r->options, "setname", r->setname);
1509     }
1510     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1511     return send_APDU (c, apdu);
1512 }
1513
1514 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1515 {
1516     int oclass;
1517     char *addinfo = 0;
1518
1519     switch (r->which)
1520     {
1521     case Z_DefaultDiagFormat_v2Addinfo:
1522         addinfo = r->u.v2Addinfo;
1523         break;
1524     case Z_DefaultDiagFormat_v3Addinfo:
1525         addinfo = r->u.v3Addinfo;
1526         break;
1527     }
1528     xfree (c->addinfo);
1529     c->addinfo = 0;
1530     set_dset_error(c, *r->condition,
1531                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1532                    addinfo, 0);
1533 }
1534
1535 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1536 {
1537     if (p->which != Z_DiagRec_defaultFormat)
1538         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1539     else
1540         response_default_diag(c, p->u.defaultFormat);
1541 }
1542
1543 ZOOM_API(ZOOM_record)
1544 ZOOM_record_clone (ZOOM_record srec)
1545 {
1546     char *buf;
1547     int size;
1548     ODR odr_enc;
1549     ZOOM_record nrec;
1550
1551     odr_enc = odr_createmem(ODR_ENCODE);
1552     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1553         return 0;
1554     buf = odr_getbuf (odr_enc, &size, 0);
1555
1556     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1557     nrec->odr = odr_createmem(ODR_DECODE);
1558     nrec->wrbuf_marc = 0;
1559     nrec->wrbuf_iconv = 0;
1560     nrec->wrbuf_opac = 0;
1561     odr_setbuf (nrec->odr, buf, size, 0);
1562     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1563
1564     odr_destroy (odr_enc);
1565     return nrec;
1566 }
1567
1568 ZOOM_API(ZOOM_record)
1569 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1570 {
1571     return record_cache_lookup (s, pos);
1572 }
1573
1574 ZOOM_API(ZOOM_record)
1575 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1576 {
1577     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1578
1579     if (!rec)
1580     {
1581         ZOOM_resultset_retrieve (r, 1, pos, 1);
1582         rec = ZOOM_resultset_record_immediate (r, pos);
1583     }
1584     return rec;
1585 }
1586
1587 ZOOM_API(void)
1588 ZOOM_record_destroy (ZOOM_record rec)
1589 {
1590     if (!rec)
1591         return;
1592     if (rec->wrbuf_marc)
1593         wrbuf_free (rec->wrbuf_marc, 1);
1594     if (rec->wrbuf_iconv)
1595         wrbuf_free (rec->wrbuf_iconv, 1);
1596     if (rec->wrbuf_opac)
1597         wrbuf_free (rec->wrbuf_opac, 1);
1598     odr_destroy (rec->odr);
1599     xfree (rec);
1600 }
1601
1602 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1603                                      int *len,
1604                                      const char *buf, int sz,
1605                                      const char *record_charset)
1606 {
1607     char to[40];
1608     char from[40];
1609     yaz_iconv_t cd = 0;
1610     yaz_marc_t mt = yaz_marc_create();
1611
1612     *from = '\0';
1613     strcpy(to, "UTF-8");
1614     if (record_charset && *record_charset)
1615     {
1616         /* Use "from,to" or just "from" */
1617         const char *cp = strchr(record_charset, ',');
1618         int clen = strlen(record_charset);
1619         if (cp && cp[1])
1620         {
1621             strncpy( to, cp+1, sizeof(to)-1);
1622             to[sizeof(to)-1] = '\0';
1623             clen = cp - record_charset;
1624         }
1625         if (clen > sizeof(from)-1)
1626             clen = sizeof(from)-1;
1627
1628         if (clen)
1629             strncpy(from, record_charset, clen);
1630         from[clen] = '\0';
1631     }
1632
1633     if (*from && *to)
1634     {
1635         cd = yaz_iconv_open(to, from);
1636         yaz_marc_iconv(mt, cd);
1637     }
1638
1639     yaz_marc_xml(mt, marc_type);
1640     if (!rec->wrbuf_marc)
1641         rec->wrbuf_marc = wrbuf_alloc();
1642     wrbuf_rewind (rec->wrbuf_marc);
1643     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1644     {
1645         yaz_marc_destroy(mt);
1646         if (cd)
1647             yaz_iconv_close(cd);
1648         if (len)
1649             *len = wrbuf_len(rec->wrbuf_marc);
1650         return wrbuf_buf(rec->wrbuf_marc);
1651     }
1652     yaz_marc_destroy(mt);
1653     if (cd)
1654         yaz_iconv_close(cd);
1655     return 0;
1656 }
1657
1658 static const char *record_iconv_return(ZOOM_record rec, int *len,
1659                                        const char *buf, int sz,
1660                                        const char *record_charset)
1661 {
1662     char to[40];
1663     char from[40];
1664     yaz_iconv_t cd = 0;
1665
1666     *from = '\0';
1667     strcpy(to, "UTF-8");
1668     if (record_charset && *record_charset)
1669     {
1670         /* Use "from,to" or just "from" */
1671         const char *cp = strchr(record_charset, ',');
1672         int clen = strlen(record_charset);
1673         if (cp && cp[1])
1674         {
1675             strncpy( to, cp+1, sizeof(to)-1);
1676             to[sizeof(to)-1] = '\0';
1677             clen = cp - record_charset;
1678         }
1679         if (clen > sizeof(from)-1)
1680             clen = sizeof(from)-1;
1681
1682         if (clen)
1683             strncpy(from, record_charset, clen);
1684         from[clen] = '\0';
1685     }
1686
1687     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1688     {
1689         char outbuf[12];
1690         size_t inbytesleft = sz;
1691         const char *inp = buf;
1692
1693         if (!rec->wrbuf_iconv)
1694             rec->wrbuf_iconv = wrbuf_alloc();
1695
1696         wrbuf_rewind(rec->wrbuf_iconv);
1697
1698         while (inbytesleft)
1699         {
1700             size_t outbytesleft = sizeof(outbuf);
1701             char *outp = outbuf;
1702             size_t r = yaz_iconv (cd, (char**) &inp,
1703                                   &inbytesleft,
1704                                   &outp, &outbytesleft);
1705             if (r == (size_t) (-1))
1706             {
1707                 int e = yaz_iconv_error(cd);
1708                 if (e != YAZ_ICONV_E2BIG)
1709                     break;
1710             }
1711             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1712         }
1713         wrbuf_puts(rec->wrbuf_iconv, "");
1714         buf = wrbuf_buf(rec->wrbuf_iconv);
1715         sz = wrbuf_len(rec->wrbuf_iconv);
1716         yaz_iconv_close(cd);
1717     }
1718     if (len)
1719         *len = sz;
1720     return buf;
1721 }
1722
1723 ZOOM_API(const char *)
1724 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1725 {
1726     char type[40];
1727     char charset[40];
1728     char xpath[512];
1729     const char *cp;
1730     int i;
1731     Z_NamePlusRecord *npr;
1732
1733     if (len)
1734         *len = 0; /* default return */
1735
1736     if (!rec)
1737         return 0;
1738     npr = rec->npr;
1739     if (!npr)
1740         return 0;
1741
1742     cp = type_spec;
1743     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1744     {
1745         if (cp[i] == ';' || cp[i] == ' ')
1746             break;
1747         type[i] = cp[i];
1748     }
1749     type[i] = '\0';
1750     charset[0] = '\0';
1751     while (type_spec[i] == ';')
1752     {
1753         i++;
1754         while (type_spec[i] == ' ')
1755             i++;
1756         if (!strncmp(type_spec+i, "charset=", 8))
1757         {
1758             int j = 0;
1759             i = i + 8; /* skip charset= */
1760             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1761             {
1762                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1763                     break;
1764                 charset[j] = cp[i];
1765             }
1766             charset[j] = '\0';
1767         }
1768         else if (!strncmp(type_spec+i, "xpath=", 6))
1769         {
1770             int j = 0;
1771             i = i + 6;
1772             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1773                 xpath[j] = cp[i];
1774             xpath[j] = '\0';
1775         }
1776         while (type_spec[i] == ' ')
1777             i++;
1778     }
1779     if (!strcmp (type, "database"))
1780     {
1781         if (len)
1782             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1783         return npr->databaseName;
1784     }
1785     else if (!strcmp (type, "syntax"))
1786     {
1787         const char *desc = 0;
1788         if (npr->which == Z_NamePlusRecord_databaseRecord)
1789         {
1790             Z_External *r = (Z_External *) npr->u.databaseRecord;
1791             oident *ent = oid_getentbyoid(r->direct_reference);
1792             if (ent)
1793                 desc = ent->desc;
1794         }
1795         if (!desc)
1796             desc = "none";
1797         if (len)
1798             *len = strlen(desc);
1799         return desc;
1800     }
1801     if (npr->which != Z_NamePlusRecord_databaseRecord)
1802         return 0;
1803
1804     /* from now on - we have a database record .. */
1805     if (!strcmp (type, "render"))
1806     {
1807         Z_External *r = (Z_External *) npr->u.databaseRecord;
1808         oident *ent = oid_getentbyoid(r->direct_reference);
1809
1810         /* render bibliographic record .. */
1811         if (r->which == Z_External_OPAC)
1812         {
1813             r = r->u.opac->bibliographicRecord;
1814             if (!r)
1815                 return 0;
1816             ent = oid_getentbyoid(r->direct_reference);
1817         }
1818         if (r->which == Z_External_sutrs)
1819             return record_iconv_return(rec, len,
1820                                        (char*) r->u.sutrs->buf,
1821                                        r->u.sutrs->len,
1822                                        charset);
1823         else if (r->which == Z_External_octet)
1824         {
1825             const char *ret_buf;
1826             switch (ent->value)
1827             {
1828             case VAL_SOIF:
1829             case VAL_HTML:
1830             case VAL_SUTRS:
1831                 break;
1832             case VAL_TEXT_XML:
1833             case VAL_APPLICATION_XML:
1834                 break;
1835             default:
1836                 ret_buf = marc_iconv_return(
1837                     rec, YAZ_MARC_LINE, len,
1838                     (const char *) r->u.octet_aligned->buf,
1839                     r->u.octet_aligned->len,
1840                     charset);
1841                 if (ret_buf)
1842                     return ret_buf;
1843             }
1844             return record_iconv_return(rec, len,
1845                                        (const char *) r->u.octet_aligned->buf,
1846                                        r->u.octet_aligned->len,
1847                                        charset);
1848         }
1849         else if (r->which == Z_External_grs1)
1850         {
1851             if (!rec->wrbuf_marc)
1852                 rec->wrbuf_marc = wrbuf_alloc();
1853             wrbuf_rewind (rec->wrbuf_marc);
1854             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1855             return record_iconv_return(rec, len,
1856                                        wrbuf_buf(rec->wrbuf_marc),
1857                                        wrbuf_len(rec->wrbuf_marc),
1858                                        charset);
1859         }
1860         return 0;
1861     }
1862     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1863     {
1864         Z_External *r = (Z_External *) npr->u.databaseRecord;
1865         oident *ent = oid_getentbyoid(r->direct_reference);
1866
1867         /* render bibliographic record .. */
1868         if (r->which == Z_External_OPAC)
1869         {
1870             r = r->u.opac->bibliographicRecord;
1871             if (!r)
1872                 return 0;
1873             ent = oid_getentbyoid(r->direct_reference);
1874         }
1875
1876         if (r->which == Z_External_sutrs)
1877             return record_iconv_return(rec, len,
1878                                        (const char *) r->u.sutrs->buf,
1879                                        r->u.sutrs->len,
1880                                        charset);
1881         else if (r->which == Z_External_octet)
1882         {
1883             const char *ret_buf;
1884             int marc_decode_type = YAZ_MARC_MARCXML;
1885
1886             if (!strcmp(type, "oai"))
1887                 marc_decode_type = YAZ_MARC_OAIMARC;
1888             switch (ent->value)
1889             {
1890             case VAL_SOIF:
1891             case VAL_HTML:
1892             case VAL_SUTRS:
1893                 break;
1894             case VAL_TEXT_XML:
1895             case VAL_APPLICATION_XML:
1896                 break;
1897             default:
1898                 ret_buf = marc_iconv_return(
1899                     rec, marc_decode_type, len,
1900                     (const char *) r->u.octet_aligned->buf,
1901                     r->u.octet_aligned->len,
1902                     charset);
1903                 if (ret_buf)
1904                     return ret_buf;
1905             }
1906             return record_iconv_return(rec, len,
1907                                        (const char *) r->u.octet_aligned->buf,
1908                                        r->u.octet_aligned->len,
1909                                        charset);
1910         }
1911         else if (r->which == Z_External_grs1)
1912         {
1913             if (len) *len = 5;
1914             return "GRS-1";
1915         }
1916         return 0;
1917     }
1918     else if (!strcmp (type, "raw"))
1919     {
1920         Z_External *r = (Z_External *) npr->u.databaseRecord;
1921
1922         if (r->which == Z_External_sutrs)
1923         {
1924             if (len) *len = r->u.sutrs->len;
1925             return (const char *) r->u.sutrs->buf;
1926         }
1927         else if (r->which == Z_External_octet)
1928         {
1929             if (len) *len = r->u.octet_aligned->len;
1930             return (const char *) r->u.octet_aligned->buf;
1931         }
1932         else /* grs-1, explain, OPAC, ... */
1933         {
1934             if (len) *len = -1;
1935             return (const char *) npr->u.databaseRecord;
1936         }
1937         return 0;
1938     }
1939     else if (!strcmp (type, "ext"))
1940     {
1941         if (len) *len = -1;
1942         return (const char *) npr->u.databaseRecord;
1943     }
1944     else if (!strcmp (type, "opac"))
1945
1946     {
1947         Z_External *r = (Z_External *) npr->u.databaseRecord;
1948         if (r->which == Z_External_OPAC)
1949         {
1950             if (!rec->wrbuf_opac)
1951                 rec->wrbuf_opac = wrbuf_alloc();
1952             wrbuf_rewind (rec->wrbuf_opac);
1953             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1954             return record_iconv_return(rec, len,
1955                                        wrbuf_buf(rec->wrbuf_opac),
1956                                        wrbuf_len(rec->wrbuf_opac),
1957                                        charset);
1958         }
1959     }
1960     return 0;
1961 }
1962
1963 static int strcmp_null(const char *v1, const char *v2)
1964 {
1965     if (!v1 && !v2)
1966         return 0;
1967     if (!v1 || !v2)
1968         return -1;
1969     return strcmp(v1, v2);
1970 }
1971
1972 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1973                               int pos)
1974 {
1975     ZOOM_record_cache rc;
1976     const char *elementSetName =
1977         ZOOM_resultset_option_get (r, "elementSetName");
1978     const char *syntax =
1979         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1980
1981     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1982     ZOOM_connection_put_event(r->connection, event);
1983
1984     for (rc = r->record_cache; rc; rc = rc->next)
1985     {
1986         if (pos == rc->pos)
1987         {
1988             if (strcmp_null(r->schema, rc->schema))
1989                 continue;
1990             if (strcmp_null(elementSetName,rc->elementSetName))
1991                 continue;
1992             if (strcmp_null(syntax, rc->syntax))
1993                 continue;
1994             /* not destroying rc->npr (it's handled by nmem )*/
1995             rc->rec.npr = npr;
1996             /* keeping wrbuf_marc too */
1997             return;
1998         }
1999     }
2000     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
2001     rc->rec.npr = npr;
2002     rc->rec.odr = 0;
2003     rc->rec.wrbuf_marc = 0;
2004     rc->rec.wrbuf_iconv = 0;
2005     rc->rec.wrbuf_opac = 0;
2006     if (elementSetName)
2007         rc->elementSetName = odr_strdup (r->odr, elementSetName);
2008     else
2009         rc->elementSetName = 0;
2010
2011     if (syntax)
2012         rc->syntax = odr_strdup (r->odr, syntax);
2013     else
2014         rc->syntax = 0;
2015
2016     if (r->schema)
2017         rc->schema = odr_strdup (r->odr, r->schema);
2018     else
2019         rc->schema = 0;
2020
2021     rc->pos = pos;
2022     rc->next = r->record_cache;
2023     r->record_cache = rc;
2024 }
2025
2026 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
2027 {
2028     ZOOM_record_cache rc;
2029     const char *elementSetName =
2030         ZOOM_resultset_option_get (r, "elementSetName");
2031     const char *syntax =
2032         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2033
2034     for (rc = r->record_cache; rc; rc = rc->next)
2035     {
2036         if (pos == rc->pos)
2037         {
2038             if (strcmp_null(r->schema, rc->schema))
2039                 continue;
2040             if (strcmp_null(elementSetName,rc->elementSetName))
2041                 continue;
2042             if (strcmp_null(syntax, rc->syntax))
2043                 continue;
2044             return &rc->rec;
2045         }
2046     }
2047     return 0;
2048 }
2049
2050 static void handle_records (ZOOM_connection c, Z_Records *sr,
2051                             int present_phase)
2052 {
2053     ZOOM_resultset resultset;
2054
2055     if (!c->tasks)
2056         return ;
2057     switch (c->tasks->which)
2058     {
2059     case ZOOM_TASK_SEARCH:
2060         resultset = c->tasks->u.search.resultset;
2061         break;
2062     case ZOOM_TASK_RETRIEVE:
2063         resultset = c->tasks->u.retrieve.resultset;
2064         break;
2065     default:
2066         return;
2067     }
2068     if (sr && sr->which == Z_Records_NSD)
2069         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2070     else if (sr && sr->which == Z_Records_multipleNSD)
2071     {
2072         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2073             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2074         else
2075             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2076     }
2077     else
2078     {
2079         if (resultset->count + resultset->start > resultset->size)
2080             resultset->count = resultset->size - resultset->start;
2081         if (resultset->count < 0)
2082             resultset->count = 0;
2083         if (sr && sr->which == Z_Records_DBOSD)
2084         {
2085             int i;
2086             NMEM nmem = odr_extract_mem (c->odr_in);
2087             Z_NamePlusRecordList *p =
2088                 sr->u.databaseOrSurDiagnostics;
2089             for (i = 0; i<p->num_records; i++)
2090             {
2091                 record_cache_add (resultset, p->records[i],
2092                                   i+ resultset->start);
2093             }
2094             /* transfer our response to search_nmem .. we need it later */
2095             nmem_transfer (resultset->odr->mem, nmem);
2096             nmem_destroy (nmem);
2097             if (present_phase && p->num_records == 0)
2098             {
2099                 /* present response and we didn't get any records! */
2100                 Z_NamePlusRecord *myrec =
2101                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2102                 record_cache_add(resultset, myrec, resultset->start);
2103             }
2104         }
2105         else if (present_phase)
2106         {
2107             /* present response and we didn't get any records! */
2108             Z_NamePlusRecord *myrec =
2109                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2110             record_cache_add(resultset, myrec, resultset->start);
2111         }
2112     }
2113 }
2114
2115 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2116 {
2117     handle_records (c, pr->records, 1);
2118 }
2119
2120 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2121                                        Z_Term *term)
2122 {
2123     switch (term->which)
2124     {
2125     case Z_Term_general:
2126         ZOOM_options_setl(opt, name,
2127                           (const char *)(term->u.general->buf),
2128                           term->u.general->len);
2129         break;
2130     case Z_Term_characterString:
2131         ZOOM_options_set(opt, name, term->u.characterString);
2132         break;
2133     case Z_Term_numeric:
2134         ZOOM_options_set_int(opt, name, *term->u.numeric);
2135         break;
2136     }
2137 }
2138
2139 static void handle_queryExpression(ZOOM_options opt, const char *name,
2140                                    Z_QueryExpression *exp)
2141 {
2142     char opt_name[80];
2143
2144     switch (exp->which)
2145     {
2146     case Z_QueryExpression_term:
2147         if (exp->u.term && exp->u.term->queryTerm)
2148         {
2149             sprintf(opt_name, "%s.term", name);
2150             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2151         }
2152         break;
2153     case Z_QueryExpression_query:
2154         break;
2155     }
2156 }
2157
2158 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2159                                 Z_OtherInformation *o)
2160 {
2161     int i;
2162     for (i = 0; o && i < o->num_elements; i++)
2163     {
2164         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2165         {
2166             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2167
2168             if (ext->which == Z_External_searchResult1)
2169             {
2170                 int j;
2171                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2172
2173                 if (sr->num)
2174                     ZOOM_options_set_int(
2175                         resultset->options, "searchresult.size", sr->num);
2176
2177                 for (j = 0; j < sr->num; j++)
2178                 {
2179                     Z_SearchInfoReport_s *ent =
2180                         ext->u.searchResult1->elements[j];
2181                     char pref[80];
2182
2183                     sprintf(pref, "searchresult.%d", j);
2184
2185                     if (ent->subqueryId)
2186                     {
2187                         char opt_name[80];
2188                         sprintf(opt_name, "%s.id", pref);
2189                         ZOOM_options_set(resultset->options, opt_name,
2190                                          ent->subqueryId);
2191                     }
2192                     if (ent->subqueryExpression)
2193                     {
2194                         char opt_name[80];
2195                         sprintf(opt_name, "%s.subquery", pref);
2196                         handle_queryExpression(resultset->options, opt_name,
2197                                                ent->subqueryExpression);
2198                     }
2199                     if (ent->subqueryInterpretation)
2200                     {
2201                         char opt_name[80];
2202                         sprintf(opt_name, "%s.interpretation", pref);
2203                         handle_queryExpression(resultset->options, opt_name,
2204                                                ent->subqueryInterpretation);
2205                     }
2206                     if (ent->subqueryRecommendation)
2207                     {
2208                         char opt_name[80];
2209                         sprintf(opt_name, "%s.recommendation", pref);
2210                         handle_queryExpression(resultset->options, opt_name,
2211                                                ent->subqueryRecommendation);
2212                     }
2213                     if (ent->subqueryCount)
2214                     {
2215                         char opt_name[80];
2216                         sprintf(opt_name, "%s.count", pref);
2217                         ZOOM_options_set_int(resultset->options, opt_name,
2218                                              *ent->subqueryCount);
2219                     }
2220                 }
2221             }
2222         }
2223     }
2224 }
2225
2226 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2227 {
2228     ZOOM_resultset resultset;
2229     ZOOM_Event event;
2230
2231     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2232         return ;
2233
2234     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2235     ZOOM_connection_put_event(c, event);
2236
2237     resultset = c->tasks->u.search.resultset;
2238
2239     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2240
2241     resultset->size = *sr->resultCount;
2242     handle_records (c, sr->records, 0);
2243 }
2244
2245 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2246 {
2247     if (res->diagnostics && res->num_diagnostics > 0)
2248         response_diag (c, res->diagnostics[0]);
2249 }
2250
2251 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2252 {
2253     NMEM nmem = odr_extract_mem (c->odr_in);
2254     ZOOM_scanset scan;
2255
2256     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2257         return 0;
2258     scan = c->tasks->u.scan.scan;
2259
2260     if (res->entries && res->entries->nonsurrogateDiagnostics)
2261         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2262     scan->scan_response = res;
2263     nmem_transfer (scan->odr->mem, nmem);
2264     if (res->stepSize)
2265         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2266     if (res->positionOfTerm)
2267         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2268     if (res->scanStatus)
2269         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2270     if (res->numberOfEntriesReturned)
2271         ZOOM_options_set_int (scan->options, "number",
2272                               *res->numberOfEntriesReturned);
2273     nmem_destroy (nmem);
2274     return 1;
2275 }
2276
2277 static zoom_ret send_sort (ZOOM_connection c,
2278                            ZOOM_resultset resultset)
2279 {
2280     if (c->error)
2281         resultset->r_sort_spec = 0;
2282     if (resultset->r_sort_spec)
2283     {
2284         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2285         Z_SortRequest *req = apdu->u.sortRequest;
2286
2287         req->num_inputResultSetNames = 1;
2288         req->inputResultSetNames = (Z_InternationalString **)
2289             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2290         req->inputResultSetNames[0] =
2291             odr_strdup (c->odr_out, resultset->setname);
2292         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2293         req->sortSequence = resultset->r_sort_spec;
2294         resultset->r_sort_spec = 0;
2295         return send_APDU (c, apdu);
2296     }
2297     return zoom_complete;
2298 }
2299
2300 static zoom_ret send_present(ZOOM_connection c)
2301 {
2302     Z_APDU *apdu = 0;
2303     Z_PresentRequest *req = 0;
2304     int i = 0;
2305     const char *syntax = 0;
2306     const char *elementSetName = 0;
2307     ZOOM_resultset  resultset;
2308
2309     if (!c->tasks)
2310     {
2311         yaz_log(log_details, "%p send_present no tasks", c);
2312         return zoom_complete;
2313     }
2314     switch (c->tasks->which)
2315     {
2316     case ZOOM_TASK_SEARCH:
2317         resultset = c->tasks->u.search.resultset;
2318         break;
2319     case ZOOM_TASK_RETRIEVE:
2320         resultset = c->tasks->u.retrieve.resultset;
2321         resultset->start = c->tasks->u.retrieve.start;
2322         resultset->count = c->tasks->u.retrieve.count;
2323
2324         if (resultset->start >= resultset->size)
2325         {
2326             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2327                     c, resultset->start, resultset->size);
2328             return zoom_complete;
2329         }
2330         if (resultset->start + resultset->count > resultset->size)
2331             resultset->count = resultset->size - resultset->start;
2332         break;
2333     default:
2334         return zoom_complete;
2335     }
2336     yaz_log(log_details, "%p send_present start=%d count=%d",
2337             c, resultset->start, resultset->count);
2338
2339     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2340     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2341
2342     if (c->error)                  /* don't continue on error */
2343         return zoom_complete;
2344     if (resultset->start < 0)
2345         return zoom_complete;
2346     for (i = 0; i<resultset->count; i++)
2347     {
2348         ZOOM_record rec =
2349             record_cache_lookup (resultset, i + resultset->start);
2350         if (!rec)
2351             break;
2352     }
2353     if (i == resultset->count)
2354     {
2355         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2356         return zoom_complete;
2357     }
2358
2359     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2360     req = apdu->u.presentRequest;
2361
2362     resultset->start += i;
2363     resultset->count -= i;
2364
2365     if (i)
2366         yaz_log(log_details, "%p send_present skip=%d", c, i);
2367
2368     *req->resultSetStartPoint = resultset->start + 1;
2369     *req->numberOfRecordsRequested = resultset->step>0 ?
2370         resultset->step : resultset->count;
2371     assert (*req->numberOfRecordsRequested > 0);
2372
2373
2374     if (syntax && *syntax)
2375         req->preferredRecordSyntax =
2376             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2377
2378     if (resultset->schema && *resultset->schema)
2379     {
2380         Z_RecordComposition *compo = (Z_RecordComposition *)
2381             odr_malloc (c->odr_out, sizeof(*compo));
2382
2383         req->recordComposition = compo;
2384         compo->which = Z_RecordComp_complex;
2385         compo->u.complex = (Z_CompSpec *)
2386             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2387         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2388             odr_malloc(c->odr_out, sizeof(bool_t));
2389         *compo->u.complex->selectAlternativeSyntax = 0;
2390
2391         compo->u.complex->generic = (Z_Specification *)
2392             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2393
2394         compo->u.complex->generic->which = Z_Schema_oid;
2395         compo->u.complex->generic->schema.oid = (Odr_oid *)
2396             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2397
2398         if (!compo->u.complex->generic->schema.oid)
2399         {
2400             /* OID wasn't a schema! Try record syntax instead. */
2401
2402             compo->u.complex->generic->schema.oid = (Odr_oid *)
2403                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2404         }
2405         if (elementSetName && *elementSetName)
2406         {
2407             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2408                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2409             compo->u.complex->generic->elementSpec->which =
2410                 Z_ElementSpec_elementSetName;
2411             compo->u.complex->generic->elementSpec->u.elementSetName =
2412                 odr_strdup (c->odr_out, elementSetName);
2413         }
2414         else
2415             compo->u.complex->generic->elementSpec = 0;
2416         compo->u.complex->num_dbSpecific = 0;
2417         compo->u.complex->dbSpecific = 0;
2418         compo->u.complex->num_recordSyntax = 0;
2419         compo->u.complex->recordSyntax = 0;
2420     }
2421     else if (elementSetName && *elementSetName)
2422     {
2423         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2424             odr_malloc (c->odr_out, sizeof(*esn));
2425         Z_RecordComposition *compo = (Z_RecordComposition *)
2426             odr_malloc (c->odr_out, sizeof(*compo));
2427
2428         esn->which = Z_ElementSetNames_generic;
2429         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2430         compo->which = Z_RecordComp_simple;
2431         compo->u.simple = esn;
2432         req->recordComposition = compo;
2433     }
2434     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2435     return send_APDU (c, apdu);
2436 }
2437
2438 ZOOM_API(ZOOM_scanset)
2439 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2440 {
2441     ZOOM_scanset s;
2442     ZOOM_query q = ZOOM_query_create();
2443
2444     ZOOM_query_prefix (q, start);
2445
2446     s = ZOOM_connection_scan1(c, q);
2447     ZOOM_query_destroy (q);
2448     return s;
2449
2450 }
2451
2452 ZOOM_API(ZOOM_scanset)
2453 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query q)
2454 {
2455     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2456     char *start;
2457     char *freeme = 0;
2458
2459     scan->connection = c;
2460     scan->odr = odr_createmem (ODR_DECODE);
2461     scan->options = ZOOM_options_create_with_parent (c->options);
2462     scan->refcount = 1;
2463     scan->scan_response = 0;
2464
2465     /*
2466      * We need to check the query-type, so we can recognise CQL and
2467      * compile it into a form that we can use here.  The ZOOM_query
2468      * structure has no explicit `type' member, but inspection of the
2469      * ZOOM_query_prefix() and ZOOM_query_cql() functions shows how
2470      * the structure is set up in each case.
2471      */
2472
2473     if (q->z_query->which == Z_Query_type_1) {
2474         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2475                 c, q, q->query_string);
2476         start = q->query_string;
2477     } else if (q->z_query->which == Z_Query_type_104) {
2478         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2479                 c, q, q->query_string);
2480         start = freeme = cql2pqf(c, q->query_string);
2481         if (start == 0)
2482             return 0;
2483     } else {
2484         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2485                 c, q, q->query_string);
2486         abort();
2487     }
2488
2489     scan->termListAndStartPoint =
2490         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2491     xfree (freeme);
2492     if (scan->termListAndStartPoint != 0)
2493     {
2494         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2495         task->u.scan.scan = scan;
2496
2497         (scan->refcount)++;
2498         if (!c->async)
2499         {
2500             while (ZOOM_event (1, &c))
2501                 ;
2502         }
2503     }
2504     return scan;
2505 }
2506
2507 ZOOM_API(void)
2508 ZOOM_scanset_destroy (ZOOM_scanset scan)
2509 {
2510     if (!scan)
2511         return;
2512     (scan->refcount)--;
2513     if (scan->refcount == 0)
2514     {
2515         odr_destroy (scan->odr);
2516
2517         ZOOM_options_destroy (scan->options);
2518         xfree (scan);
2519     }
2520 }
2521
2522 static zoom_ret send_package (ZOOM_connection c)
2523 {
2524     ZOOM_Event event;
2525
2526     yaz_log(log_details, "%p send_package", c);
2527     if (!c->tasks)
2528         return zoom_complete;
2529     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2530
2531     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2532     ZOOM_connection_put_event (c, event);
2533
2534     return do_write_ex (c, c->tasks->u.package->buf_out,
2535                         c->tasks->u.package->len_out);
2536 }
2537
2538 static zoom_ret send_scan (ZOOM_connection c)
2539 {
2540     ZOOM_scanset scan;
2541     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2542     Z_ScanRequest *req = apdu->u.scanRequest;
2543
2544     yaz_log(log_details, "%p send_scan", c);
2545     if (!c->tasks)
2546         return zoom_complete;
2547     assert (c->tasks->which == ZOOM_TASK_SCAN);
2548     scan = c->tasks->u.scan.scan;
2549
2550     req->termListAndStartPoint = scan->termListAndStartPoint;
2551     req->attributeSet = scan->attributeSet;
2552
2553     *req->numberOfTermsRequested =
2554         ZOOM_options_get_int(scan->options, "number", 10);
2555
2556     req->preferredPositionInResponse =
2557         odr_intdup (c->odr_out,
2558                     ZOOM_options_get_int(scan->options, "position", 1));
2559
2560     req->stepSize =
2561         odr_intdup (c->odr_out,
2562                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2563
2564     req->databaseNames = set_DatabaseNames (c, scan->options,
2565                                             &req->num_databaseNames);
2566
2567     return send_APDU (c, apdu);
2568 }
2569
2570 ZOOM_API(size_t)
2571 ZOOM_scanset_size (ZOOM_scanset scan)
2572 {
2573     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2574         return 0;
2575     return scan->scan_response->entries->num_entries;
2576 }
2577
2578 ZOOM_API(const char *)
2579 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2580                    int *occ, int *len)
2581 {
2582     const char *term = 0;
2583     size_t noent = ZOOM_scanset_size (scan);
2584     Z_ScanResponse *res = scan->scan_response;
2585
2586     *len = 0;
2587     *occ = 0;
2588     if (pos >= noent)
2589         return 0;
2590     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2591     {
2592         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2593
2594         if (t->term->which == Z_Term_general)
2595         {
2596             term = (const char *) t->term->u.general->buf;
2597             *len = t->term->u.general->len;
2598         }
2599         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2600     }
2601     return term;
2602 }
2603
2604 ZOOM_API(const char *)
2605 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2606                            int *occ, int *len)
2607 {
2608     const char *term = 0;
2609     size_t noent = ZOOM_scanset_size (scan);
2610     Z_ScanResponse *res = scan->scan_response;
2611
2612     *len = 0;
2613     *occ = 0;
2614     if (pos >= noent)
2615         return 0;
2616     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2617     {
2618         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2619
2620         if (t->displayTerm)
2621         {
2622             term = t->displayTerm;
2623             *len = strlen(term);
2624         }
2625         else if (t->term->which == Z_Term_general)
2626         {
2627             term = (const char *) t->term->u.general->buf;
2628             *len = t->term->u.general->len;
2629         }
2630         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2631     }
2632     return term;
2633 }
2634
2635 ZOOM_API(const char *)
2636 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2637 {
2638     return ZOOM_options_get (scan->options, key);
2639 }
2640
2641 ZOOM_API(void)
2642 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2643                               const char *val)
2644 {
2645     ZOOM_options_set (scan->options, key, val);
2646 }
2647
2648 static Z_APDU *create_es_package (ZOOM_package p, int type)
2649 {
2650     const char *str;
2651     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2652     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2653
2654     *req->function = Z_ExtendedServicesRequest_create;
2655
2656     str = ZOOM_options_get(p->options, "package-name");
2657     if (str && *str)
2658         req->packageName = nmem_strdup (p->odr_out->mem, str);
2659
2660     str = ZOOM_options_get(p->options, "user-id");
2661     if (str)
2662         req->userId = nmem_strdup (p->odr_out->mem, str);
2663
2664     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2665                                               type);
2666
2667     str = ZOOM_options_get(p->options, "function");
2668     if (str)
2669     {
2670         if (!strcmp (str, "create"))
2671             *req->function = 1;
2672         if (!strcmp (str, "delete"))
2673             *req->function = 2;
2674         if (!strcmp (str, "modify"))
2675             *req->function = 3;
2676     }
2677     return apdu;
2678 }
2679
2680 static const char *ill_array_lookup (void *clientData, const char *idx)
2681 {
2682     ZOOM_package p = (ZOOM_package) clientData;
2683     return ZOOM_options_get (p->options, idx+4);
2684 }
2685
2686 static Z_External *encode_ill_request (ZOOM_package p)
2687 {
2688     ODR out = p->odr_out;
2689     ILL_Request *req;
2690     Z_External *r = 0;
2691     struct ill_get_ctl ctl;
2692
2693     ctl.odr = p->odr_out;
2694     ctl.clientData = p;
2695     ctl.f = ill_array_lookup;
2696
2697     req = ill_get_ILLRequest(&ctl, "ill", 0);
2698
2699     if (!ill_Request (out, &req, 0, 0))
2700     {
2701         int ill_request_size;
2702         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2703         if (ill_request_buf)
2704             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2705         return 0;
2706     }
2707     else
2708     {
2709         oident oid;
2710         int illRequest_size = 0;
2711         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2712
2713         oid.proto = PROTO_GENERAL;
2714         oid.oclass = CLASS_GENERAL;
2715         oid.value = VAL_ISO_ILL_1;
2716
2717         r = (Z_External *) odr_malloc (out, sizeof(*r));
2718         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2719         r->indirect_reference = 0;
2720         r->descriptor = 0;
2721         r->which = Z_External_single;
2722
2723         r->u.single_ASN1_type =
2724             odr_create_Odr_oct(out,
2725                                (unsigned char *)illRequest_buf,
2726                                illRequest_size);
2727     }
2728     return r;
2729 }
2730
2731 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2732 {
2733     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2734     const char *str;
2735
2736     req->which = Z_IOItemOrder_esRequest;
2737     req->u.esRequest = (Z_IORequest *)
2738         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2739
2740     /* to keep part ... */
2741     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2742         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2743     req->u.esRequest->toKeep->supplDescription = 0;
2744     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2745         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2746
2747     str = ZOOM_options_get(p->options, "contact-name");
2748     req->u.esRequest->toKeep->contact->name = str ?
2749         nmem_strdup (p->odr_out->mem, str) : 0;
2750
2751     str = ZOOM_options_get(p->options, "contact-phone");
2752     req->u.esRequest->toKeep->contact->phone = str ?
2753         nmem_strdup (p->odr_out->mem, str) : 0;
2754
2755     str = ZOOM_options_get(p->options, "contact-email");
2756     req->u.esRequest->toKeep->contact->email = str ?
2757         nmem_strdup (p->odr_out->mem, str) : 0;
2758
2759     req->u.esRequest->toKeep->addlBilling = 0;
2760
2761     /* not to keep part ... */
2762     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2763         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2764
2765     str = ZOOM_options_get(p->options, "itemorder-setname");
2766     if (!str)
2767         str = "default";
2768
2769     if (!*str)
2770         req->u.esRequest->notToKeep->resultSetItem = 0;
2771     else
2772     {
2773         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2774            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2775
2776         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2777            nmem_strdup (p->odr_out->mem, str);
2778         req->u.esRequest->notToKeep->resultSetItem->item =
2779             (int *) odr_malloc(p->odr_out, sizeof(int));
2780
2781         str = ZOOM_options_get(p->options, "itemorder-item");
2782         *req->u.esRequest->notToKeep->resultSetItem->item =
2783             (str ? atoi(str) : 1);
2784     }
2785     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2786
2787     return req;
2788 }
2789
2790 Z_APDU *create_admin_package(ZOOM_package p, int type,
2791                              Z_ESAdminOriginPartToKeep **toKeepP,
2792                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2793 {
2794     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2795     if (apdu)
2796     {
2797         Z_ESAdminOriginPartToKeep  *toKeep;
2798         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2799         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2800         const char *first_db = "Default";
2801         int num_db;
2802         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2803         if (num_db > 0)
2804             first_db = db[0];
2805
2806         r->direct_reference =
2807             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2808                                    VAL_ADMINSERVICE);
2809         r->descriptor = 0;
2810         r->indirect_reference = 0;
2811         r->which = Z_External_ESAdmin;
2812
2813         r->u.adminService = (Z_Admin *)
2814             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2815         r->u.adminService->which = Z_Admin_esRequest;
2816         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2817             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2818
2819         toKeep = r->u.adminService->u.esRequest->toKeep =
2820             (Z_ESAdminOriginPartToKeep *)
2821             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2822         toKeep->which = type;
2823         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2824         toKeep->u.create = odr_nullval();
2825         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2826
2827         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2828             (Z_ESAdminOriginPartNotToKeep *)
2829             odr_malloc(p->odr_out,
2830                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2831         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2832         notToKeep->u.recordsWillFollow = odr_nullval();
2833         if (toKeepP)
2834             *toKeepP = toKeep;
2835         if (notToKeepP)
2836             *notToKeepP = notToKeep;
2837     }
2838     return apdu;
2839 }
2840
2841 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2842 {
2843     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2844     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2845     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2846     const char *doc = ZOOM_options_get(p->options, "doc");
2847
2848     if (!doc)
2849         doc = "";
2850
2851     req->taskSpecificParameters = ext;
2852     ext->direct_reference = req->packageType;
2853     ext->descriptor = 0;
2854     ext->indirect_reference = 0;
2855
2856     ext->which = Z_External_octet;
2857     ext->u.single_ASN1_type =
2858         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
2859                            strlen(doc));
2860     return apdu;
2861 }
2862
2863 static Z_APDU *create_update_package(ZOOM_package p)
2864 {
2865     Z_APDU *apdu = 0;
2866     const char *first_db = "Default";
2867     int num_db;
2868     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2869     const char *action = ZOOM_options_get(p->options, "action");
2870     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2871     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2872     const char *record_buf = ZOOM_options_get(p->options, "record");
2873     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2874     int syntax_oid = VAL_NONE;
2875     int action_no = -1;
2876
2877     if (syntax_str)
2878         syntax_oid = oid_getvalbyname(syntax_str);
2879     if (!record_buf)
2880     {
2881         record_buf = "void";
2882         syntax_oid = VAL_SUTRS;
2883     }
2884     if (syntax_oid == VAL_NONE)
2885         syntax_oid = VAL_TEXT_XML;
2886
2887     if (num_db > 0)
2888         first_db = db[0];
2889
2890     if (!action)
2891         action = "specialUpdate";
2892
2893     if (!strcmp(action, "recordInsert"))
2894         action_no = Z_IUOriginPartToKeep_recordInsert;
2895     else if (!strcmp(action, "recordReplace"))
2896         action_no = Z_IUOriginPartToKeep_recordReplace;
2897     else if (!strcmp(action, "recordDelete"))
2898         action_no = Z_IUOriginPartToKeep_recordDelete;
2899     else if (!strcmp(action, "elementUpdate"))
2900         action_no = Z_IUOriginPartToKeep_elementUpdate;
2901     else if (!strcmp(action, "specialUpdate"))
2902         action_no = Z_IUOriginPartToKeep_specialUpdate;
2903     else
2904         return 0;
2905
2906     apdu = create_es_package (p, VAL_DBUPDATE);
2907     if (apdu)
2908     {
2909         Z_IUOriginPartToKeep *toKeep;
2910         Z_IUSuppliedRecords *notToKeep;
2911         Z_External *r = (Z_External *)
2912             odr_malloc (p->odr_out, sizeof(*r));
2913
2914         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2915
2916         r->direct_reference =
2917             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2918                                    VAL_DBUPDATE);
2919         r->descriptor = 0;
2920         r->which = Z_External_update;
2921         r->indirect_reference = 0;
2922         r->u.update = (Z_IUUpdate *)
2923             odr_malloc(p->odr_out, sizeof(*r->u.update));
2924
2925         r->u.update->which = Z_IUUpdate_esRequest;
2926         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2927             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2928         toKeep = r->u.update->u.esRequest->toKeep =
2929             (Z_IUOriginPartToKeep *)
2930             odr_malloc(p->odr_out, sizeof(*toKeep));
2931
2932         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2933         toKeep->schema = 0;
2934         toKeep->elementSetName = 0;
2935         toKeep->actionQualifier = 0;
2936         toKeep->action = odr_intdup(p->odr_out, action_no);
2937
2938         notToKeep = r->u.update->u.esRequest->notToKeep =
2939             (Z_IUSuppliedRecords *)
2940             odr_malloc(p->odr_out, sizeof(*notToKeep));
2941         notToKeep->num = 1;
2942         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2943             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2944         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2945             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2946         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2947         if (recordIdOpaque)
2948         {
2949             notToKeep->elements[0]->u.opaque =
2950                 odr_create_Odr_oct(p->odr_out,
2951                                    (const unsigned char *) recordIdOpaque,
2952                                    strlen(recordIdOpaque));
2953         }
2954         else if (recordIdNumber)
2955         {
2956             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2957
2958             notToKeep->elements[0]->u.number =
2959                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2960         }
2961         else
2962             notToKeep->elements[0]->u.opaque = 0;
2963         notToKeep->elements[0]->supplementalId = 0;
2964         notToKeep->elements[0]->correlationInfo = 0;
2965         notToKeep->elements[0]->record =
2966             z_ext_record(p->odr_out, syntax_oid,
2967                          record_buf, strlen(record_buf));
2968     }
2969     if (0 && apdu)
2970     {
2971        ODR print = odr_createmem(ODR_PRINT);
2972
2973        z_APDU(print, &apdu, 0, 0);
2974        odr_destroy(print);
2975     }
2976     return apdu;
2977 }
2978
2979 ZOOM_API(void)
2980     ZOOM_package_send (ZOOM_package p, const char *type)
2981 {
2982     Z_APDU *apdu = 0;
2983     ZOOM_connection c;
2984     if (!p)
2985         return;
2986     c = p->connection;
2987     odr_reset (p->odr_out);
2988     xfree (p->buf_out);
2989     p->buf_out = 0;
2990     if (!strcmp(type, "itemorder"))
2991     {
2992         apdu = create_es_package (p, VAL_ITEMORDER);
2993         if (apdu)
2994         {
2995             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2996
2997             r->direct_reference =
2998                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2999                                        VAL_ITEMORDER);
3000             r->descriptor = 0;
3001             r->which = Z_External_itemOrder;
3002             r->indirect_reference = 0;
3003             r->u.itemOrder = encode_item_order (p);
3004
3005             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3006         }
3007     }
3008     else if (!strcmp(type, "create"))  /* create database */
3009     {
3010         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3011                                     0, 0);
3012     }
3013     else if (!strcmp(type, "drop"))  /* drop database */
3014     {
3015         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3016                                     0, 0);
3017     }
3018     else if (!strcmp(type, "commit"))  /* commit changes */
3019     {
3020         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3021                                     0, 0);
3022     }
3023     else if (!strcmp(type, "update")) /* update record(s) */
3024     {
3025         apdu = create_update_package(p);
3026     }
3027     else if (!strcmp(type, "xmlupdate"))
3028     {
3029         apdu = create_xmlupdate_package(p);
3030     }
3031     if (apdu)
3032     {
3033         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3034         {
3035             char *buf;
3036
3037             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
3038             task->u.package = p;
3039             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3040             p->buf_out = (char *) xmalloc (p->len_out);
3041             memcpy (p->buf_out, buf, p->len_out);
3042
3043             (p->refcount)++;
3044             if (!c->async)
3045             {
3046                 while (ZOOM_event (1, &c))
3047                     ;
3048             }
3049         }
3050     }
3051 }
3052
3053 ZOOM_API(ZOOM_package)
3054     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
3055 {
3056     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
3057
3058     p->connection = c;
3059     p->odr_out = odr_createmem (ODR_ENCODE);
3060     p->options = ZOOM_options_create_with_parent2 (options, c->options);
3061     p->refcount = 1;
3062     p->buf_out = 0;
3063     p->len_out = 0;
3064     return p;
3065 }
3066
3067 ZOOM_API(void)
3068     ZOOM_package_destroy(ZOOM_package p)
3069 {
3070     if (!p)
3071         return;
3072     (p->refcount)--;
3073     if (p->refcount == 0)
3074     {
3075         odr_destroy (p->odr_out);
3076         xfree (p->buf_out);
3077
3078         ZOOM_options_destroy (p->options);
3079         xfree (p);
3080     }
3081 }
3082
3083 ZOOM_API(const char *)
3084 ZOOM_package_option_get (ZOOM_package p, const char *key)
3085 {
3086     return ZOOM_options_get (p->options, key);
3087 }
3088
3089
3090 ZOOM_API(void)
3091 ZOOM_package_option_set (ZOOM_package p, const char *key,
3092                               const char *val)
3093 {
3094     ZOOM_options_set (p->options, key, val);
3095 }
3096
3097 static int ZOOM_connection_exec_task (ZOOM_connection c)
3098 {
3099     ZOOM_task task = c->tasks;
3100     zoom_ret ret = zoom_complete;
3101
3102     if (!task)
3103         return 0;
3104     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3105              c, task->which, task->running);
3106     if (c->error != ZOOM_ERROR_NONE)
3107     {
3108         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3109                 "removing tasks because of error = %d", c, c->error);
3110         ZOOM_connection_remove_tasks (c);
3111         return 0;
3112     }
3113     if (task->running)
3114     {
3115         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3116                  "task already running", c);
3117         return 0;
3118     }
3119     task->running = 1;
3120     ret = zoom_complete;
3121     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3122     {
3123         switch (task->which)
3124         {
3125         case ZOOM_TASK_SEARCH:
3126             if (c->proto == PROTO_HTTP)
3127                 ret = ZOOM_connection_srw_send_search(c);
3128             else
3129                 ret = ZOOM_connection_send_search(c);
3130             break;
3131         case ZOOM_TASK_RETRIEVE:
3132             if (c->proto == PROTO_HTTP)
3133                 ret = ZOOM_connection_srw_send_search(c);
3134             else
3135                 ret = send_present (c);
3136             break;
3137         case ZOOM_TASK_CONNECT:
3138             ret = do_connect(c);
3139             break;
3140         case ZOOM_TASK_SCAN:
3141             ret = send_scan(c);
3142             break;
3143         case ZOOM_TASK_PACKAGE:
3144             ret = send_package(c);
3145             break;
3146         case ZOOM_TASK_SORT:
3147             c->tasks->u.sort.resultset->r_sort_spec =
3148                 c->tasks->u.sort.q->sort_spec;
3149             ret = send_sort(c, c->tasks->u.sort.resultset);
3150             break;
3151         }
3152     }
3153     else
3154     {
3155         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3156                 "remove tasks because no connection exist", c);
3157         ZOOM_connection_remove_tasks (c);
3158     }
3159     if (ret == zoom_complete)
3160     {
3161         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3162                  "task removed (complete)", c);
3163         ZOOM_connection_remove_task (c);
3164         return 0;
3165     }
3166     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3167             "task pending", c);
3168     return 1;
3169 }
3170
3171 static zoom_ret send_sort_present (ZOOM_connection c)
3172 {
3173     zoom_ret r = zoom_complete;
3174
3175     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3176         r = send_sort (c, c->tasks->u.search.resultset);
3177     if (r == zoom_complete)
3178         r = send_present (c);
3179     return r;
3180 }
3181
3182 static int es_response (ZOOM_connection c,
3183                         Z_ExtendedServicesResponse *res)
3184 {
3185     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3186         return 0;
3187     if (res->diagnostics && res->num_diagnostics > 0)
3188         response_diag(c, res->diagnostics[0]);
3189     if (res->taskPackage &&
3190         res->taskPackage->which == Z_External_extendedService)
3191     {
3192         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3193         Odr_oct *id = taskPackage->targetReference;
3194
3195         if (id)
3196             ZOOM_options_setl (c->tasks->u.package->options,
3197                                "targetReference", (char*) id->buf, id->len);
3198     }
3199     if (res->taskPackage &&
3200         res->taskPackage->which == Z_External_octet)
3201     {
3202         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3203         ZOOM_options_setl (c->tasks->u.package->options,
3204                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
3205     }
3206     return 1;
3207 }
3208
3209 static void interpret_init_diag(ZOOM_connection c,
3210                                 Z_DiagnosticFormat *diag)
3211 {
3212     if (diag->num > 0)
3213     {
3214         Z_DiagnosticFormat_s *ds = diag->elements[0];
3215         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3216             response_default_diag(c, ds->u.defaultDiagRec);
3217     }
3218 }
3219
3220
3221 static void interpret_otherinformation_field(ZOOM_connection c,
3222                                              Z_OtherInformation *ui)
3223 {
3224     int i;
3225     for (i = 0; i < ui->num_elements; i++)
3226     {
3227         Z_OtherInformationUnit *unit = ui->list[i];
3228         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3229             unit->information.externallyDefinedInfo &&
3230             unit->information.externallyDefinedInfo->which ==
3231             Z_External_diag1)
3232         {
3233             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3234         }
3235     }
3236 }
3237
3238 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3239 {
3240     Z_InitResponse *initrs;
3241
3242     c->mask = 0;
3243     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3244     switch(apdu->which)
3245     {
3246     case Z_APDU_initResponse:
3247         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3248         initrs = apdu->u.initResponse;
3249         ZOOM_connection_option_set(c, "serverImplementationId",
3250                                    initrs->implementationId ?
3251                                    initrs->implementationId : "");
3252         ZOOM_connection_option_set(c, "serverImplementationName",
3253                                    initrs->implementationName ?
3254                                    initrs->implementationName : "");
3255         ZOOM_connection_option_set(c, "serverImplementationVersion",
3256                                    initrs->implementationVersion ?
3257                                    initrs->implementationVersion : "");
3258         /* Set the three old options too, for old applications */
3259         ZOOM_connection_option_set(c, "targetImplementationId",
3260                                    initrs->implementationId ?
3261                                    initrs->implementationId : "");
3262         ZOOM_connection_option_set(c, "targetImplementationName",
3263                                    initrs->implementationName ?
3264                                    initrs->implementationName : "");
3265         ZOOM_connection_option_set(c, "targetImplementationVersion",
3266                                    initrs->implementationVersion ?
3267                                    initrs->implementationVersion : "");
3268         if (!*initrs->result)
3269         {
3270             Z_External *uif = initrs->userInformationField;
3271
3272             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3273
3274             if (uif && uif->which == Z_External_userInfo1)
3275                 interpret_otherinformation_field(c, uif->u.userInfo1);
3276         }
3277         else
3278         {
3279             char *cookie =
3280                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3281                                           VAL_COOKIE, 1, 0);
3282             xfree (c->cookie_in);
3283             c->cookie_in = 0;
3284             if (cookie)
3285                 c->cookie_in = xstrdup(cookie);
3286             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3287                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3288                 c->support_named_resultsets = 1;
3289             if (c->tasks)
3290             {
3291                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3292                 ZOOM_connection_remove_task (c);
3293             }
3294             ZOOM_connection_exec_task (c);
3295         }
3296         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3297         {
3298             NMEM tmpmem = nmem_create();
3299             Z_CharSetandLanguageNegotiation *p =
3300                 yaz_get_charneg_record(initrs->otherInfo);
3301
3302             if (p)
3303             {
3304                 char *charset = NULL, *lang = NULL;
3305                 int sel;
3306
3307                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3308                 yaz_log(log_details, "%p recv_apdu target accepted: "
3309                         "charset %s, language %s, select %d",
3310                         c,
3311                         charset ? charset : "none", lang ? lang : "none", sel);
3312                 if (charset)
3313                     ZOOM_connection_option_set (c, "negotiation-charset",
3314                                                 charset);
3315                 if (lang)
3316                     ZOOM_connection_option_set (c, "negotiation-lang",
3317                                                 lang);
3318
3319                 ZOOM_connection_option_set (
3320                     c,  "negotiation-charset-in-effect-for-records",
3321                     (sel != 0) ? "1" : "0");
3322                 nmem_destroy(tmpmem);
3323             }
3324         }
3325         break;
3326     case Z_APDU_searchResponse:
3327         yaz_log(log_api, "%p recv_apdu Search response", c);
3328         handle_search_response (c, apdu->u.searchResponse);
3329         if (send_sort_present (c) == zoom_complete)
3330             ZOOM_connection_remove_task (c);
3331         break;
3332     case Z_APDU_presentResponse:
3333         yaz_log(log_api, "%p recv_apdu Present response", c);
3334         handle_present_response (c, apdu->u.presentResponse);
3335         if (send_present (c) == zoom_complete)
3336             ZOOM_connection_remove_task (c);
3337         break;
3338     case Z_APDU_sortResponse:
3339         yaz_log(log_api, "%p recv_apdu Sort response", c);
3340         sort_response (c, apdu->u.sortResponse);
3341         if (send_present (c) == zoom_complete)
3342             ZOOM_connection_remove_task (c);
3343         break;
3344     case Z_APDU_scanResponse:
3345         yaz_log(log_api, "%p recv_apdu Scan response", c);
3346         scan_response (c, apdu->u.scanResponse);
3347         ZOOM_connection_remove_task (c);
3348         break;
3349     case Z_APDU_extendedServicesResponse:
3350         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3351         es_response (c, apdu->u.extendedServicesResponse);
3352         ZOOM_connection_remove_task (c);
3353         break;
3354     case Z_APDU_close:
3355         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3356         if (c->reconnect_ok)
3357         {
3358             do_close(c);
3359             c->tasks->running = 0;
3360             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3361         }
3362         else
3363         {
3364             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3365             do_close(c);
3366         }
3367         break;
3368     default:
3369         yaz_log(log_api, "%p Received unknown PDU", c);
3370         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3371         do_close(c);
3372     }
3373 }
3374
3375 #if HAVE_XML2
3376 static void handle_srw_response(ZOOM_connection c,
3377                                 Z_SRW_searchRetrieveResponse *res)
3378 {
3379     ZOOM_resultset resultset = 0;
3380     int i;
3381     NMEM nmem;
3382     ZOOM_Event event;
3383
3384     if (!c->tasks)
3385         return;
3386
3387     if (c->tasks->which == ZOOM_TASK_SEARCH)
3388         resultset = c->tasks->u.search.resultset;
3389     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3390         resultset = c->tasks->u.retrieve.resultset;
3391     else
3392         return ;
3393
3394     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3395     ZOOM_connection_put_event(c, event);
3396
3397     resultset->size = 0;
3398
3399     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3400
3401     if (res->numberOfRecords)
3402         resultset->size = *res->numberOfRecords;
3403
3404     for (i = 0; i<res->num_records; i++)
3405     {
3406         int pos;
3407
3408         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3409             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3410
3411         if (res->records[i].recordPosition &&
3412             *res->records[i].recordPosition > 0)
3413             pos = *res->records[i].recordPosition - 1;
3414         else
3415             pos = resultset->start + i;
3416
3417         npr->databaseName = 0;
3418         npr->which = Z_NamePlusRecord_databaseRecord;
3419         npr->u.databaseRecord = (Z_External *)
3420             odr_malloc(c->odr_in, sizeof(Z_External));
3421         npr->u.databaseRecord->descriptor = 0;
3422         npr->u.databaseRecord->direct_reference =
3423             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3424         npr->u.databaseRecord->which = Z_External_octet;
3425
3426         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3427             odr_malloc(c->odr_in, sizeof(Odr_oct));
3428         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3429             res->records[i].recordData_buf;
3430         npr->u.databaseRecord->u.octet_aligned->len =
3431             npr->u.databaseRecord->u.octet_aligned->size =
3432             res->records[i].recordData_len;
3433         record_cache_add (resultset, npr, pos);
3434     }
3435     if (res->num_diagnostics > 0)
3436     {
3437         const char *uri = res->diagnostics[0].uri;
3438         if (uri)
3439         {
3440             int code = 0;
3441             const char *cp;
3442             if ((cp = strrchr(uri, '/')))
3443                 code = atoi(cp+1);
3444             set_dset_error(c, code, uri,
3445                            res->diagnostics[0].details, 0);
3446         }
3447     }
3448     nmem = odr_extract_mem(c->odr_in);
3449     nmem_transfer(resultset->odr->mem, nmem);
3450     nmem_destroy(nmem);
3451 }
3452 #endif
3453
3454 #if HAVE_XML2
3455 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3456 {
3457     int ret = -1;
3458     const char *content_type = z_HTTP_header_lookup(hres->headers,
3459                                                     "Content-Type");
3460     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3461                                                        "Connection");
3462     c->mask = 0;
3463     yaz_log(log_details, "%p handle_http", c);
3464
3465     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3466     {
3467         Z_SOAP *soap_package = 0;
3468         ODR o = c->odr_in;
3469         Z_SOAP_Handler soap_handlers[2] = {
3470             {"http://www.loc.gov/zing/srw/", 0,
3471              (Z_SOAP_fun) yaz_srw_codec},
3472             {0, 0, 0}
3473         };
3474         ret = z_soap_codec(o, &soap_package,
3475                            &hres->content_buf, &hres->content_len,
3476                            soap_handlers);
3477         if (!ret && soap_package->which == Z_SOAP_generic &&
3478             soap_package->u.generic->no == 0)
3479         {
3480             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3481             if (sr->which == Z_SRW_searchRetrieve_response)
3482                 handle_srw_response(c, sr->u.response);
3483             else
3484                 ret = -1;
3485         }
3486         else if (!ret && (soap_package->which == Z_SOAP_fault
3487                           || soap_package->which == Z_SOAP_error))
3488         {
3489             set_HTTP_error(c, hres->code,
3490                            soap_package->u.fault->fault_code,
3491                            soap_package->u.fault->fault_string);
3492         }
3493         else
3494             ret = -1;
3495     }
3496     if (ret)
3497     {
3498         if (hres->code != 200)
3499             set_HTTP_error(c, hres->code, 0, 0);
3500         else
3501             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3502         do_close (c);
3503     }
3504     ZOOM_connection_remove_task(c);
3505     if (!strcmp(hres->version, "1.0"))
3506     {
3507         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3508         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3509             do_close(c);
3510     }
3511     else
3512     {
3513         /* HTTP 1.1: only if no close we stay alive .. */
3514         if (connection_head && !strcmp(connection_head, "close"))
3515             do_close(c);
3516     }
3517 }
3518 #endif
3519
3520 static int do_read (ZOOM_connection c)
3521 {
3522     int r, more;
3523     ZOOM_Event event;
3524
3525     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3526     ZOOM_connection_put_event (c, event);
3527
3528     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3529     more = cs_more(c->cs);
3530     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3531     if (r == 1)
3532         return 0;
3533     if (r <= 0)
3534     {
3535         if (c->reconnect_ok)
3536         {
3537             do_close (c);
3538             c->reconnect_ok = 0;
3539             yaz_log(log_details, "%p do_read reconnect read", c);
3540             c->tasks->running = 0;
3541             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3542         }
3543         else
3544         {
3545             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3546             do_close (c);
3547         }
3548     }
3549     else
3550     {
3551         Z_GDU *gdu;
3552         ZOOM_Event event;
3553
3554         odr_reset (c->odr_in);
3555         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3556         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3557         ZOOM_connection_put_event (c, event);
3558
3559         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3560         {
3561             int x;
3562             int err = odr_geterrorx(c->odr_in, &x);
3563             char msg[60];
3564             const char *element = odr_getelement(c->odr_in);
3565             sprintf (msg, "ODR code %d:%d element=%-20s",
3566                      err, x, element ? element : "<unknown>");
3567             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3568             do_close (c);
3569         }
3570         else if (gdu->which == Z_GDU_Z3950)
3571             recv_apdu (c, gdu->u.z3950);
3572         else if (gdu->which == Z_GDU_HTTP_Response)
3573         {
3574 #if HAVE_XML2
3575             handle_http (c, gdu->u.HTTP_Response);
3576 #else
3577             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3578             do_close (c);
3579 #endif
3580         }
3581         c->reconnect_ok = 0;
3582     }
3583     return 1;
3584 }
3585
3586 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3587 {
3588     int r;
3589     ZOOM_Event event;
3590
3591     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3592     ZOOM_connection_put_event (c, event);
3593
3594     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3595     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3596     {
3597         yaz_log(log_details, "%p do_write_ex write failed", c);
3598         if (c->reconnect_ok)
3599         {
3600             do_close (c);
3601             c->reconnect_ok = 0;
3602             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3603             c->tasks->running = 0;
3604             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3605             return zoom_pending;
3606         }
3607         if (c->state == STATE_CONNECTING)
3608             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3609         else
3610             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3611         do_close (c);
3612         return zoom_complete;
3613     }
3614     else if (r == 1)
3615     {
3616         c->mask = ZOOM_SELECT_EXCEPT;
3617         if (c->cs->io_pending & CS_WANT_WRITE)
3618             c->mask += ZOOM_SELECT_WRITE;
3619         if (c->cs->io_pending & CS_WANT_READ)
3620             c->mask += ZOOM_SELECT_READ;
3621         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3622                 c, c->mask);
3623     }
3624     else
3625     {
3626         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3627         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3628                 c, c->mask);
3629     }
3630     return zoom_pending;
3631 }
3632
3633 static zoom_ret do_write(ZOOM_connection c)
3634 {
3635     return do_write_ex (c, c->buf_out, c->len_out);
3636 }
3637
3638
3639 ZOOM_API(const char *)
3640 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3641 {
3642     return ZOOM_options_get (c->options, key);
3643 }
3644
3645 ZOOM_API(const char *)
3646 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp)
3647 {
3648     return ZOOM_options_getl (c->options, key, lenp);
3649 }
3650
3651 ZOOM_API(void)
3652 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3653                             const char *val)
3654 {
3655     ZOOM_options_set (c->options, key, val);
3656 }
3657
3658 ZOOM_API(void)
3659 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3660                              const char *val, int len)
3661 {
3662     ZOOM_options_setl (c->options, key, val, len);
3663 }
3664
3665 ZOOM_API(const char *)
3666 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3667 {
3668     return ZOOM_options_get (r->options, key);
3669 }
3670
3671 ZOOM_API(void)
3672 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3673                                   const char *val)
3674 {
3675     ZOOM_options_set (r->options, key, val);
3676 }
3677
3678
3679 ZOOM_API(int)
3680 ZOOM_connection_errcode (ZOOM_connection c)
3681 {
3682     return ZOOM_connection_error (c, 0, 0);
3683 }
3684
3685 ZOOM_API(const char *)
3686 ZOOM_connection_errmsg (ZOOM_connection c)
3687 {
3688     const char *msg;
3689     ZOOM_connection_error (c, &msg, 0);
3690     return msg;
3691 }
3692
3693 ZOOM_API(const char *)
3694 ZOOM_connection_addinfo (ZOOM_connection c)
3695 {
3696     const char *addinfo;
3697     ZOOM_connection_error (c, 0, &addinfo);
3698     return addinfo;
3699 }
3700
3701 ZOOM_API(const char *)
3702 ZOOM_connection_diagset (ZOOM_connection c)
3703 {
3704     const char *diagset;
3705     ZOOM_connection_error_x (c, 0, 0, &diagset);
3706     return diagset;
3707 }
3708
3709 ZOOM_API(const char *)
3710 ZOOM_diag_str (int error)
3711 {
3712     switch (error)
3713     {
3714     case ZOOM_ERROR_NONE:
3715         return "No error";
3716     case ZOOM_ERROR_CONNECT:
3717         return "Connect failed";
3718     case ZOOM_ERROR_MEMORY:
3719         return "Out of memory";
3720     case ZOOM_ERROR_ENCODE:
3721         return "Encoding failed";
3722     case ZOOM_ERROR_DECODE:
3723         return "Decoding failed";
3724     case ZOOM_ERROR_CONNECTION_LOST:
3725         return "Connection lost";
3726     case ZOOM_ERROR_INIT:
3727         return "Init rejected";
3728     case ZOOM_ERROR_INTERNAL:
3729         return "Internal failure";
3730     case ZOOM_ERROR_TIMEOUT:
3731         return "Timeout";
3732     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3733         return "Unsupported protocol";
3734     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3735         return "Unsupported query type";
3736     case ZOOM_ERROR_INVALID_QUERY:
3737         return "Invalid query";
3738     case ZOOM_ERROR_CQL_PARSE:
3739         return "CQL parsing error";
3740     case ZOOM_ERROR_CQL_TRANSFORM:
3741         return "CQL transformation error";
3742     default:
3743         return diagbib1_str (error);
3744     }
3745 }
3746
3747 ZOOM_API(int)
3748 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3749                          const char **addinfo, const char **diagset)
3750 {
3751     int error = c->error;
3752     if (cp)
3753     {
3754         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3755             *cp = ZOOM_diag_str(error);
3756         else if (!strcmp(c->diagset, "HTTP"))
3757             *cp = z_HTTP_errmsg(c->error);
3758         else if (!strcmp(c->diagset, "Bib-1"))
3759             *cp = ZOOM_diag_str(error);
3760         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3761             *cp = yaz_diag_srw_str(c->error);
3762         else
3763             *cp = "Unknown error and diagnostic set";
3764     }
3765     if (addinfo)
3766         *addinfo = c->addinfo ? c->addinfo : "";
3767     if (diagset)
3768         *diagset = c->diagset ? c->diagset : "";
3769     return c->error;
3770 }
3771
3772 ZOOM_API(int)
3773 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3774                        const char **addinfo)
3775 {
3776     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3777 }
3778
3779 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3780 {
3781     ZOOM_Event event = 0;
3782     int r = cs_look(c->cs);
3783     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3784              c, mask, r);
3785
3786     if (r == CS_NONE)
3787     {
3788         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3789         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3790         do_close (c);
3791         ZOOM_connection_put_event (c, event);
3792     }
3793     else if (r == CS_CONNECT)
3794     {
3795         int ret;
3796         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3797
3798         ret = cs_rcvconnect (c->cs);
3799         yaz_log(log_details, "%p ZOOM_connection_do_io "
3800                 "cs_rcvconnect returned %d", c, ret);
3801         if (ret == 1)
3802         {
3803             c->mask = ZOOM_SELECT_EXCEPT;
3804             if (c->cs->io_pending & CS_WANT_WRITE)
3805                 c->mask += ZOOM_SELECT_WRITE;
3806             if (c->cs->io_pending & CS_WANT_READ)
3807                 c->mask += ZOOM_SELECT_READ;
3808             ZOOM_connection_put_event (c, event);
3809         }
3810         else if (ret == 0)
3811         {
3812             ZOOM_connection_put_event (c, event);
3813             get_cert(c);
3814             if (c->proto == PROTO_Z3950)
3815                 ZOOM_connection_send_init(c);
3816             else
3817             {
3818                 /* no init request for SRW .. */
3819                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3820                 ZOOM_connection_remove_task (c);
3821                 c->mask = 0;
3822                 ZOOM_connection_exec_task (c);
3823             }
3824             c->state = STATE_ESTABLISHED;
3825         }
3826         else
3827         {
3828             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3829             do_close (c);
3830             ZOOM_connection_put_event (c, event);
3831         }
3832     }
3833     else
3834     {
3835         if (mask & ZOOM_SELECT_READ)
3836             do_read (c);
3837         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3838             do_write (c);
3839     }
3840     return 1;
3841 }
3842
3843 ZOOM_API(int)
3844 ZOOM_connection_last_event(ZOOM_connection cs)
3845 {
3846     if (!cs)
3847         return ZOOM_EVENT_NONE;
3848     return cs->last_event;
3849 }
3850
3851 ZOOM_API(int)
3852 ZOOM_event (int no, ZOOM_connection *cs)
3853 {
3854     int timeout = 30;      /* default timeout in seconds */
3855     int timeout_set = 0;   /* whether it was overriden at all */
3856 #if HAVE_SYS_POLL_H
3857     struct pollfd pollfds[1024];
3858     ZOOM_connection poll_cs[1024];
3859 #else
3860     struct timeval tv;
3861     fd_set input, output, except;
3862 #endif
3863     int i, r, nfds;
3864     int max_fd = 0;
3865
3866     for (i = 0; i<no; i++)
3867     {
3868         ZOOM_connection c = cs[i];
3869         ZOOM_Event event;
3870         if (c && (event = ZOOM_connection_get_event(c)))
3871         {
3872             ZOOM_Event_destroy (event);
3873             return i+1;
3874         }
3875     }
3876     for (i = 0; i<no; i++)
3877     {
3878         ZOOM_connection c = cs[i];
3879         ZOOM_Event event;
3880         if (c && ZOOM_connection_exec_task (c))
3881         {
3882             if ((event = ZOOM_connection_get_event(c)))
3883             {
3884                 ZOOM_Event_destroy (event);
3885                 return i+1;
3886             }
3887         }
3888     }
3889 #if HAVE_SYS_POLL_H
3890
3891 #else
3892     FD_ZERO (&input);
3893     FD_ZERO (&output);
3894     FD_ZERO (&except);
3895 #endif
3896     nfds = 0;
3897     for (i = 0; i<no; i++)
3898     {
3899         ZOOM_connection c = cs[i];
3900         int fd, mask;
3901         int this_timeout;
3902
3903         if (!c)
3904             continue;
3905         fd = z3950_connection_socket(c);
3906         mask = z3950_connection_mask(c);
3907
3908         if (fd == -1)
3909             continue;
3910         if (max_fd < fd)
3911             max_fd = fd;
3912
3913         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3914         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3915         if (this_timeout != -2)
3916         {
3917             /* ensure the minimum timeout is used */
3918             if (!timeout_set)
3919                 timeout = this_timeout;
3920             else if (this_timeout != -1 && this_timeout < timeout)
3921                 timeout = this_timeout;
3922             timeout_set = 1;
3923         }
3924 #if HAVE_SYS_POLL_H
3925         if (mask)
3926         {
3927             short poll_events = 0;
3928
3929             if (mask & ZOOM_SELECT_READ)
3930                 poll_events += POLLIN;
3931             if (mask & ZOOM_SELECT_WRITE)
3932                 poll_events += POLLOUT;
3933             if (mask & ZOOM_SELECT_EXCEPT)
3934                 poll_events += POLLERR;
3935             pollfds[nfds].fd = fd;
3936             pollfds[nfds].events = poll_events;
3937             pollfds[nfds].revents = 0;
3938             poll_cs[nfds] = c;
3939             nfds++;
3940         }
3941 #else
3942         if (mask & ZOOM_SELECT_READ)
3943         {
3944             FD_SET (fd, &input);
3945             nfds++;
3946         }
3947         if (mask & ZOOM_SELECT_WRITE)
3948         {
3949             FD_SET (fd, &output);
3950             nfds++;
3951         }
3952         if (mask & ZOOM_SELECT_EXCEPT)
3953         {
3954             FD_SET (fd, &except);
3955             nfds++;
3956         }
3957 #endif
3958     }
3959     if (!nfds)
3960         return 0;
3961
3962 #if HAVE_SYS_POLL_H
3963     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3964     for (i = 0; i<nfds; i++)
3965     {
3966         ZOOM_connection c = poll_cs[i];
3967         if (r && c->mask)
3968         {
3969             int mask = 0;
3970             if (pollfds[i].revents & POLLIN)
3971                 mask += ZOOM_SELECT_READ;
3972             if (pollfds[i].revents & POLLOUT)
3973                 mask += ZOOM_SELECT_WRITE;
3974             if (pollfds[i].revents & POLLERR)
3975                 mask += ZOOM_SELECT_EXCEPT;
3976             if (mask)
3977                 ZOOM_connection_do_io(c, mask);
3978         }
3979         else if (r == 0 && c->mask)
3980         {
3981             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3982             /* timeout and this connection was waiting */
3983             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3984             do_close (c);
3985             ZOOM_connection_put_event(c, event);
3986         }
3987     }
3988 #else
3989     tv.tv_sec = timeout;
3990     tv.tv_usec = 0;
3991     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
3992     for (i = 0; i<no; i++)
3993     {
3994         ZOOM_connection c = cs[i];
3995         int fd, mask;
3996
3997         if (!c)
3998             continue;
3999         fd = z3950_connection_socket(c);
4000         mask = 0;
4001         if (r && c->mask)
4002         {
4003             /* no timeout and real socket */
4004             if (FD_ISSET(fd, &input))
4005                 mask += ZOOM_SELECT_READ;
4006             if (FD_ISSET(fd, &output))
4007                 mask += ZOOM_SELECT_WRITE;
4008             if (FD_ISSET(fd, &except))
4009                 mask += ZOOM_SELECT_EXCEPT;
4010             if (mask)
4011                 ZOOM_connection_do_io(c, mask);
4012         }
4013         if (r == 0 && c->mask)
4014         {
4015             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4016             /* timeout and this connection was waiting */
4017             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4018             do_close (c);
4019             ZOOM_connection_put_event(c, event);
4020         }
4021     }
4022 #endif
4023     for (i = 0; i<no; i++)
4024     {
4025         ZOOM_connection c = cs[i];
4026         ZOOM_Event event;
4027         if (c && (event = ZOOM_connection_get_event(c)))
4028         {
4029             ZOOM_Event_destroy (event);
4030             return i+1;
4031         }
4032     }
4033     return 0;
4034 }
4035
4036
4037 /*
4038  * Returns an xmalloc()d string containing RPN that corresponds to the
4039  * CQL passed in.  On error, sets the Connection object's error state
4040  * and returns a null pointer.
4041  * ### We could cache CQL parser and/or transformer in Connection.
4042  */
4043 static char *cql2pqf(ZOOM_connection c, const char *cql)
4044 {
4045     CQL_parser parser;
4046     int error;
4047     struct cql_node *node;
4048     const char *cqlfile;
4049     static cql_transform_t trans;
4050     char pqfbuf[512];
4051
4052     parser = cql_parser_create();
4053     if ((error = cql_parser_string(parser, cql)) != 0) {
4054         cql_parser_destroy(parser);
4055         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4056         return 0;
4057     }
4058
4059     node = cql_parser_result(parser);
4060     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4061
4062     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4063     if (cqlfile == 0) {
4064         cql_parser_destroy(parser);
4065         cql_node_destroy(node);
4066         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4067         return 0;
4068     }
4069
4070     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4071         char buf[512];
4072         cql_parser_destroy(parser);
4073         cql_node_destroy(node);
4074         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4075                 cqlfile, strerror(errno));
4076         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4077         return 0;
4078     }
4079
4080     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4081     cql_parser_destroy(parser);
4082     cql_node_destroy(node);
4083     if (error != 0) {
4084         char buf[512];
4085         const char *addinfo;
4086         error = cql_transform_error(trans, &addinfo);
4087         cql_transform_close(trans);
4088         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4089         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4090         return 0;
4091     }
4092
4093     cql_transform_close(trans);
4094     return xstrdup(pqfbuf);
4095 }
4096
4097
4098 /*
4099  * Local variables:
4100  * c-basic-offset: 4
4101  * indent-tabs-mode: nil
4102  * End:
4103  * vim: shiftwidth=4 tabstop=8 expandtab
4104  */
4105