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 1.71 2006-05-09 16:13:28 mike 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         if (!c->tasks)
 250         {
 251             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 252             ZOOM_connection_put_event(c, event);
 253         }
 254     }
 255 }
 256
 257 static int ZOOM_connection_exec_task (ZOOM_connection c);
 258
 259 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 260 {
 261     while (c->tasks)
 262         ZOOM_connection_remove_task(c);
 263 }
 264
 265 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 266
 267 ZOOM_API(ZOOM_connection)
 268 ZOOM_connection_create (ZOOM_options options)
 269 {
 270     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 271
 272     initlog();
 273
 274     yaz_log(log_api, "%p ZOOM_connection_create", c);
 275
 276     c->proto = PROTO_Z3950;
 277     c->cs = 0;
 278     c->mask = 0;
 279     c->reconnect_ok = 0;
 280     c->state = STATE_IDLE;
 281     c->addinfo = 0;
 282     c->diagset = 0;
 283     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 284     c->buf_in = 0;
 285     c->len_in = 0;
 286     c->buf_out = 0;
 287     c->len_out = 0;
 288     c->resultsets = 0;
 289
 290     c->options = ZOOM_options_create_with_parent(options);
 291
 292     c->host_port = 0;
 293     c->path = 0;
 294     c->proxy = 0;
 295
 296     c->charset = c->lang = 0;
 297
 298     c->cookie_out = 0;
 299     c->cookie_in = 0;
 300     c->client_IP = 0;
 301     c->tasks = 0;
 302
 303     c->odr_in = odr_createmem (ODR_DECODE);
 304     c->odr_out = odr_createmem (ODR_ENCODE);
 305
 306     c->async = 0;
 307     c->support_named_resultsets = 0;
 308     c->last_event = ZOOM_EVENT_NONE;
 309
 310     c->m_queue_front = 0;
 311     c->m_queue_back = 0;
 312     return c;
 313 }
 314
 315 /* set database names. Take local databases (if set); otherwise
 316    take databases given in ZURL (if set); otherwise use Default */
 317 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 318                                  int *num)
 319 {
 320     char **databaseNames;
 321     const char *cp = ZOOM_options_get (options, "databaseName");
 322
 323     if ((!cp || !*cp) && con->host_port)
 324     {
 325         if (strncmp (con->host_port, "unix:", 5) == 0)
 326             cp = strchr(con->host_port+5, ':');
 327         else
 328             cp = strchr(con->host_port, '/');
 329         if (cp)
 330             cp++;
 331     }
 332     if (!cp)
 333         cp = "Default";
 334     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 335     return databaseNames;
 336 }
 337
 338 ZOOM_API(ZOOM_connection)
 339 ZOOM_connection_new (const char *host, int portnum)
 340 {
 341     ZOOM_connection c = ZOOM_connection_create (0);
 342
 343     ZOOM_connection_connect (c, host, portnum);
 344     return c;
 345 }
 346
 347 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 348 {
 349     if (!s || !*s)
 350         return zoom_sru_soap;
 351     if (!yaz_matchstr(s, "soap"))
 352         return zoom_sru_soap;
 353     else if (!yaz_matchstr(s, "get"))
 354         return zoom_sru_get;
 355     else if (!yaz_matchstr(s, "post"))
 356         return zoom_sru_post;
 357     return zoom_sru_error;
 358 }
 359
 360 ZOOM_API(void)
 361 ZOOM_connection_connect(ZOOM_connection c,
 362                         const char *host, int portnum)
 363 {
 364     const char *val;
 365     ZOOM_task task;
 366
 367     initlog();
 368
 369     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 370             c, host, portnum);
 371
 372     if (c->cs)
 373     {
 374         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 375         c->reconnect_ok = 1;
 376         return;
 377     }
 378     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 379     xfree (c->proxy);
 380     val = ZOOM_options_get (c->options, "proxy");
 381     if (val && *val)
 382     {
 383         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 384         c->proxy = xstrdup (val);
 385     }
 386     else
 387         c->proxy = 0;
 388
 389     xfree (c->charset);
 390     val = ZOOM_options_get (c->options, "charset");
 391     if (val && *val)
 392     {
 393         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 394         c->charset = xstrdup (val);
 395     }
 396     else
 397         c->charset = 0;
 398
 399     xfree (c->lang);
 400     val = ZOOM_options_get (c->options, "lang");
 401     if (val && *val)
 402     {
 403         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 404         c->lang = xstrdup (val);
 405     }
 406     else
 407         c->lang = 0;
 408
 409     val = ZOOM_options_get (c->options, "sru");
 410     c->sru_mode = get_sru_mode_from_string(val);
 411
 412     xfree (c->host_port);
 413     if (portnum)
 414     {
 415         char hostn[128];
 416         sprintf (hostn, "%.80s:%d", host, portnum);
 417         c->host_port = xstrdup(hostn);
 418     }
 419     else
 420         c->host_port = xstrdup(host);
 421
 422     {
 423         /*
 424          * If the "<scheme>:" part of the host string is preceded by one
 425          * or more comma-separated <name>=<value> pairs, these are taken
 426          * to be options to be set on the connection object.  Among other
 427          * applications, this facility can be used to embed authentication
 428          * in a host string:
 429          *          user=admin,password=secret,tcp:localhost:9999
 430          */
 431         char *remainder = c->host_port;
 432         char *pcolon = strchr(remainder, ':');
 433         char *pcomma;
 434         char *pequals;
 435         while ((pcomma = strchr(remainder, ',')) != 0 &&
 436                (pcolon == 0 || pcomma < pcolon)) {
 437             *pcomma = '\0';
 438             if ((pequals = strchr(remainder, '=')) != 0) {
 439                 *pequals = '\0';
 440                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 441                 ZOOM_connection_option_set(c, remainder, pequals+1);
 442             }
 443             remainder = pcomma+1;
 444         }
 445
 446         if (remainder != c->host_port) {
 447             xfree(c->host_port);
 448             c->host_port = xstrdup(remainder);
 449             /*printf("# reset hp='%s'\n", remainder);*/
 450         }
 451     }
 452
 453     ZOOM_options_set(c->options, "host", c->host_port);
 454
 455     val = ZOOM_options_get (c->options, "cookie");
 456     if (val && *val)
 457     {
 458         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 459         c->cookie_out = xstrdup (val);
 460     }
 461
 462     val = ZOOM_options_get (c->options, "clientIP");
 463     if (val && *val)
 464     {
 465         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 466                 c, val);
 467         c->client_IP = xstrdup (val);
 468     }
 469
 470     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 471     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 472
 473     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 474
 475     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 476
 477     if (!c->async)
 478     {
 479         while (ZOOM_event (1, &c))
 480             ;
 481     }
 482 }
 483
 484 ZOOM_API(ZOOM_query)
 485 ZOOM_query_create(void)
 486 {
 487     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 488
 489     yaz_log(log_details, "%p ZOOM_query_create", s);
 490     s->refcount = 1;
 491     s->z_query = 0;
 492     s->sort_spec = 0;
 493     s->odr = odr_createmem (ODR_ENCODE);
 494     s->query_string = 0;
 495
 496     return s;
 497 }
 498
 499 ZOOM_API(void)
 500 ZOOM_query_destroy(ZOOM_query s)
 501 {
 502     if (!s)
 503         return;
 504
 505     (s->refcount)--;
 506     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 507     if (s->refcount == 0)
 508     {
 509         odr_destroy (s->odr);
 510         xfree (s);
 511     }
 512 }
 513
 514 ZOOM_API(int)
 515 ZOOM_query_prefix(ZOOM_query s, const char *str)
 516 {
 517     s->query_string = odr_strdup(s->odr, str);
 518     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 519     s->z_query->which = Z_Query_type_1;
 520     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 521     if (!s->z_query->u.type_1)
 522     {
 523         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 524         s->z_query = 0;
 525         return -1;
 526     }
 527     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 528     return 0;
 529 }
 530
 531 ZOOM_API(int)
 532 ZOOM_query_cql(ZOOM_query s, const char *str)
 533 {
 534     Z_External *ext;
 535
 536     s->query_string = odr_strdup(s->odr, str);
 537
 538     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 539     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 540     ext->indirect_reference = 0;
 541     ext->descriptor = 0;
 542     ext->which = Z_External_CQL;
 543     ext->u.cql = s->query_string;
 544
 545     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 546     s->z_query->which = Z_Query_type_104;
 547     s->z_query->u.type_104 =  ext;
 548
 549     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 550
 551     return 0;
 552 }
 553
 554 /*
 555  * Translate the CQL string client-side into RPN which is passed to
 556  * the server.  This is useful for server's that don't themselves
 557  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 558  * only as a place to stash diagnostics if compilation fails; if this
 559  * information is not needed, a null pointer may be used.
 560  */
 561 ZOOM_API(int)
 562 ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 563 {
 564     char *rpn;
 565     int ret;
 566
 567     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 568     if (conn == 0)
 569         conn = ZOOM_connection_create(0);
 570
 571     if ((rpn = cql2pqf(conn, str)) == 0)
 572         return -1;
 573
 574     ret = ZOOM_query_prefix(s, rpn);
 575     xfree(rpn);
 576     return ret;
 577 }
 578
 579 ZOOM_API(int)
 580 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 581 {
 582     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 583     if (!s->sort_spec)
 584     {
 585         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 586                 s, criteria);
 587         return -1;
 588     }
 589     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 590     return 0;
 591 }
 592
 593 static zoom_ret do_write(ZOOM_connection c);
 594
 595 ZOOM_API(void)
 596 ZOOM_connection_destroy(ZOOM_connection c)
 597 {
 598     ZOOM_resultset r;
 599     if (!c)
 600         return;
 601     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 602     if (c->cs)
 603         cs_close (c->cs);
 604     for (r = c->resultsets; r; r = r->next)
 605         r->connection = 0;
 606
 607     xfree (c->buf_in);
 608     xfree (c->addinfo);
 609     xfree (c->diagset);
 610     odr_destroy (c->odr_in);
 611     odr_destroy (c->odr_out);
 612     ZOOM_options_destroy (c->options);
 613     ZOOM_connection_remove_tasks (c);
 614     xfree (c->host_port);
 615     xfree (c->path);
 616     xfree (c->proxy);
 617     xfree (c->charset);
 618     xfree (c->lang);
 619     xfree (c->cookie_out);
 620     xfree (c->cookie_in);
 621     xfree (c->client_IP);
 622     xfree (c);
 623 }
 624
 625 void ZOOM_resultset_addref (ZOOM_resultset r)
 626 {
 627     if (r)
 628     {
 629         (r->refcount)++;
 630         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 631                 r, r->refcount);
 632     }
 633 }
 634
 635 ZOOM_resultset ZOOM_resultset_create ()
 636 {
 637     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 638
 639     initlog();
 640
 641     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 642     r->refcount = 1;
 643     r->size = 0;
 644     r->odr = odr_createmem (ODR_ENCODE);
 645     r->start = 0;
 646     r->piggyback = 1;
 647     r->setname = 0;
 648     r->schema = 0;
 649     r->count = 0;
 650     r->step = 0;
 651     r->record_cache = 0;
 652     r->r_sort_spec = 0;
 653     r->query = 0;
 654     r->connection = 0;
 655     r->next = 0;
 656     return r;
 657 }
 658
 659 ZOOM_API(ZOOM_resultset)
 660 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 661 {
 662     ZOOM_resultset r;
 663     ZOOM_query s = ZOOM_query_create();
 664
 665     ZOOM_query_prefix (s, q);
 666
 667     r = ZOOM_connection_search (c, s);
 668     ZOOM_query_destroy (s);
 669     return r;
 670 }
 671
 672 ZOOM_API(ZOOM_resultset)
 673 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 674 {
 675     ZOOM_resultset r = ZOOM_resultset_create ();
 676     ZOOM_task task;
 677     const char *cp;
 678
 679     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 680     r->r_sort_spec = q->sort_spec;
 681     r->query = q;
 682
 683     r->options = ZOOM_options_create_with_parent(c->options);
 684
 685     r->start = ZOOM_options_get_int(r->options, "start", 0);
 686     r->count = ZOOM_options_get_int(r->options, "count", 0);
 687     {
 688         /* If "presentChunk" is defined use that; otherwise "step" */
 689         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 690         r->step = ZOOM_options_get_int(r->options,
 691                                        (cp != 0 ? "presentChunk": "step"), 0);
 692     }
 693     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 694     cp = ZOOM_options_get (r->options, "setname");
 695     if (cp)
 696         r->setname = xstrdup(cp);
 697     cp = ZOOM_options_get (r->options, "schema");
 698     if (cp)
 699         r->schema = xstrdup(cp);
 700
 701     r->connection = c;
 702
 703     r->next = c->resultsets;
 704     c->resultsets = r;
 705
 706     if (c->host_port && c->proto == PROTO_HTTP)
 707     {
 708         if (!c->cs)
 709         {
 710             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 711             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 712         }
 713         else
 714         {
 715             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 716             c->reconnect_ok = 1;
 717         }
 718     }
 719
 720     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 721     task->u.search.resultset = r;
 722     ZOOM_resultset_addref (r);
 723
 724     (q->refcount)++;
 725
 726     if (!c->async)
 727     {
 728         while (ZOOM_event (1, &c))
 729             ;
 730     }
 731     return r;
 732 }
 733
 734 /*
 735  * This is the old result-set sorting API, which is maintained only
 736  * for the sake of binary compatibility.  There is no reason ever to
 737  * use this rather than ZOOM_resultset_sort1().
 738  */
 739 ZOOM_API(void)
 740 ZOOM_resultset_sort(ZOOM_resultset r,
 741                     const char *sort_type, const char *sort_spec)
 742 {
 743     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 744 }
 745
 746 ZOOM_API(int)
 747 ZOOM_resultset_sort1(ZOOM_resultset r,
 748                      const char *sort_type, const char *sort_spec)
 749 {
 750     ZOOM_connection c = r->connection;
 751     ZOOM_task task;
 752     ZOOM_query newq;
 753
 754     newq = ZOOM_query_create();
 755     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 756         return -1;
 757
 758     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 759             r, r, sort_type, sort_spec);
 760     if (!c)
 761         return 0;
 762
 763     if (c->host_port && c->proto == PROTO_HTTP)
 764     {
 765         if (!c->cs)
 766         {
 767             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 768             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 769         }
 770         else
 771         {
 772             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 773                     r);
 774             c->reconnect_ok = 1;
 775         }
 776     }
 777
 778     ZOOM_resultset_cache_reset(r);
 779     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 780     task->u.sort.resultset = r;
 781     task->u.sort.q = newq;
 782
 783     ZOOM_resultset_addref (r);
 784
 785     if (!c->async)
 786     {
 787         while (ZOOM_event (1, &c))
 788             ;
 789     }
 790
 791     return 0;
 792 }
 793
 794 ZOOM_API(void)
 795     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 796 {
 797     ZOOM_record_cache rc;
 798
 799     for (rc = r->record_cache; rc; rc = rc->next)
 800     {
 801         if (rc->rec.wrbuf_marc)
 802             wrbuf_free (rc->rec.wrbuf_marc, 1);
 803         if (rc->rec.wrbuf_iconv)
 804             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 805         if (rc->rec.wrbuf_opac)
 806             wrbuf_free (rc->rec.wrbuf_opac, 1);
 807     }
 808     r->record_cache = 0;
 809 }
 810
 811 ZOOM_API(void)
 812 ZOOM_resultset_destroy(ZOOM_resultset r)
 813 {
 814     if (!r)
 815         return;
 816     (r->refcount)--;
 817     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 818             r, r, r->refcount);
 819     if (r->refcount == 0)
 820     {
 821         ZOOM_resultset_cache_reset(r);
 822
 823         if (r->connection)
 824         {
 825             /* remove ourselves from the resultsets in connection */
 826             ZOOM_resultset *rp = &r->connection->resultsets;
 827             while (1)
 828             {
 829                 assert (*rp);   /* we must be in this list!! */
 830                 if (*rp == r)
 831                 {   /* OK, we're here - take us out of it */
 832                     *rp = (*rp)->next;
 833                     break;
 834                 }
 835                 rp = &(*rp)->next;
 836             }
 837         }
 838         ZOOM_query_destroy (r->query);
 839         ZOOM_options_destroy (r->options);
 840         odr_destroy (r->odr);
 841         xfree (r->setname);
 842         xfree (r->schema);
 843         xfree (r);
 844     }
 845 }
 846
 847 ZOOM_API(size_t)
 848 ZOOM_resultset_size (ZOOM_resultset r)
 849 {
 850     return r->size;
 851 }
 852
 853 static void do_close (ZOOM_connection c)
 854 {
 855     if (c->cs)
 856         cs_close(c->cs);
 857     c->cs = 0;
 858     c->mask = 0;
 859     c->state = STATE_IDLE;
 860 }
 861
 862 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 863                                      int force_sync, int start, int count)
 864 {
 865     ZOOM_task task;
 866     ZOOM_connection c;
 867     const char *cp;
 868
 869     if (!r)
 870         return;
 871     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 872             " count=%d", r, force_sync, start, count);
 873     c = r->connection;
 874     if (!c)
 875         return;
 876
 877     if (c->host_port && c->proto == PROTO_HTTP)
 878     {
 879         if (!c->cs)
 880         {
 881             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 882             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 883         }
 884         else
 885         {
 886             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 887                     "reconnect", r);
 888             c->reconnect_ok = 1;
 889         }
 890     }
 891     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 892     task->u.retrieve.resultset = r;
 893     task->u.retrieve.start = start;
 894     task->u.retrieve.count = count;
 895
 896     cp = ZOOM_options_get (r->options, "schema");
 897     if (cp)
 898     {
 899         if (!r->schema || strcmp(r->schema, cp))
 900         {
 901             xfree(r->schema);
 902             r->schema = xstrdup(cp);
 903         }
 904     }
 905
 906     ZOOM_resultset_addref (r);
 907
 908     if (!r->connection->async || force_sync)
 909         while (r->connection && ZOOM_event (1, &r->connection))
 910             ;
 911 }
 912
 913 ZOOM_API(void)
 914 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 915                         size_t start, size_t count)
 916 {
 917     int force_present = 0;
 918
 919     if (!r)
 920         return ;
 921     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
 922             r, r, (long) start, (long) count);
 923     if (count && recs)
 924         force_present = 1;
 925     ZOOM_resultset_retrieve (r, force_present, start, count);
 926     if (force_present)
 927     {
 928         size_t i;
 929         for (i = 0; i< count; i++)
 930             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 931     }
 932 }
 933
 934 static void get_cert(ZOOM_connection c)
 935 {
 936     char *cert_buf;
 937     int cert_len;
 938
 939     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 940     {
 941         ZOOM_connection_option_setl(c, "sslPeerCert",
 942                                     cert_buf, cert_len);
 943         xfree(cert_buf);
 944     }
 945 }
 946
 947 static zoom_ret do_connect (ZOOM_connection c)
 948 {
 949     void *add;
 950     const char *effective_host;
 951
 952     if (c->proxy)
 953         effective_host = c->proxy;
 954     else
 955         effective_host = c->host_port;
 956
 957     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
 958
 959     if (c->cs)
 960         cs_close(c->cs);
 961     c->cs = cs_create_host (effective_host, 0, &add);
 962
 963     if (c->cs && c->cs->protocol == PROTO_HTTP)
 964     {
 965 #if HAVE_XML2
 966         const char *path = 0;
 967
 968         c->proto = PROTO_HTTP;
 969         cs_get_host_args(c->host_port, &path);
 970         xfree(c->path);
 971         c->path = (char*) xmalloc(strlen(path)+2);
 972         c->path[0] = '/';
 973         strcpy (c->path+1, path);
 974 #else
 975         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 976         do_close(c);
 977         return zoom_complete;
 978 #endif
 979     }
 980     if (c->cs)
 981     {
 982         int ret = cs_connect (c->cs, add);
 983         if (ret == 0)
 984         {
 985             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 986             ZOOM_connection_put_event(c, event);
 987             get_cert(c);
 988             if (c->proto == PROTO_Z3950)
 989                 ZOOM_connection_send_init(c);
 990             else
 991             {
 992                 /* no init request for SRW .. */
 993                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 994                 ZOOM_connection_remove_task (c);
 995                 c->mask = 0;
 996                 ZOOM_connection_exec_task (c);
 997             }
 998             c->state = STATE_ESTABLISHED;
 999             return zoom_pending;
1000         }
1001         else if (ret > 0)
1002         {
1003             c->state = STATE_CONNECTING;
1004             c->mask = ZOOM_SELECT_EXCEPT;
1005             if (c->cs->io_pending & CS_WANT_WRITE)
1006                 c->mask += ZOOM_SELECT_WRITE;
1007             if (c->cs->io_pending & CS_WANT_READ)
1008                 c->mask += ZOOM_SELECT_READ;
1009             return zoom_pending;
1010         }
1011     }
1012     c->state = STATE_IDLE;
1013     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1014     return zoom_complete;
1015 }
1016
1017 int z3950_connection_socket(ZOOM_connection c)
1018 {
1019     if (c->cs)
1020         return cs_fileno(c->cs);
1021     return -1;
1022 }
1023
1024 int z3950_connection_mask(ZOOM_connection c)
1025 {
1026     if (c->cs)
1027         return c->mask;
1028     return 0;
1029 }
1030
1031 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
1032 {
1033     int i;
1034     for (i = 0; i<200; i++)
1035     {
1036         size_t len;
1037         Z_OtherInformation **oi;
1038         char buf[80];
1039         const char *val;
1040         const char *cp;
1041         int oidval;
1042
1043         sprintf (buf, "otherInfo%d", i);
1044         val = ZOOM_options_get (c->options, buf);
1045         if (!val)
1046             break;
1047         cp = strchr(val, ':');
1048         if (!cp)
1049             continue;
1050         len = cp - val;
1051         if (len >= sizeof(buf))
1052             len = sizeof(buf)-1;
1053         memcpy (buf, val, len);
1054         buf[len] = '\0';
1055         oidval = oid_getvalbyname (buf);
1056         if (oidval == VAL_NONE)
1057             continue;
1058
1059         yaz_oi_APDU(a, &oi);
1060         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1061     }
1062 }
1063
1064 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1065 {
1066     assert (a);
1067     if (c->cookie_out)
1068     {
1069         Z_OtherInformation **oi;
1070         yaz_oi_APDU(a, &oi);
1071         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1072     }
1073     if (c->client_IP)
1074     {
1075         Z_OtherInformation **oi;
1076         yaz_oi_APDU(a, &oi);
1077         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1078     }
1079     otherInfo_attach (c, a, out);
1080     if (!z_APDU(out, &a, 0, 0))
1081     {
1082         FILE *outf = fopen("/tmp/apdu.txt", "a");
1083         if (a && outf)
1084         {
1085             ODR odr_pr = odr_createmem(ODR_PRINT);
1086             fprintf (outf, "a=%p\n", a);
1087             odr_setprint(odr_pr, outf);
1088             z_APDU(odr_pr, &a, 0, 0);
1089             odr_destroy(odr_pr);
1090         }
1091         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1092         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1093         odr_reset(out);
1094         return -1;
1095     }
1096     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1097     return 0;
1098 }
1099
1100 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
1101 {
1102     ZOOM_Event event;
1103     assert (a);
1104     if (encode_APDU(c, a, c->odr_out))
1105         return zoom_complete;
1106     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1107     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1108     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1109     ZOOM_connection_put_event (c, event);
1110     odr_reset(c->odr_out);
1111     return do_write (c);
1112 }
1113
1114 /* returns 1 if PDU was sent OK (still pending )
1115            0 if PDU was not sent OK (nothing to wait for)
1116 */
1117
1118 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1119 {
1120     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1121     Z_InitRequest *ireq = apdu->u.initRequest;
1122     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1123         odr_malloc(c->odr_out, sizeof(*auth));
1124     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1125     const char *auth_userId = ZOOM_options_get (c->options, "user");
1126     const char *auth_password = ZOOM_options_get (c->options, "password");
1127     char *version;
1128
1129     /* support the pass for backwards compatibility */
1130     if (!auth_password)
1131         auth_password = ZOOM_options_get (c->options, "pass");
1132
1133     ODR_MASK_SET(ireq->options, Z_Options_search);
1134     ODR_MASK_SET(ireq->options, Z_Options_present);
1135     ODR_MASK_SET(ireq->options, Z_Options_scan);
1136     ODR_MASK_SET(ireq->options, Z_Options_sort);
1137     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1138     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1139
1140     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1141     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1142     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1143
1144     /* Index Data's Z39.50 Implementor Id is 81 */
1145     ireq->implementationId = odr_prepend(c->odr_out,
1146         ZOOM_options_get(c->options, "implementationId"),
1147         odr_prepend(c->odr_out, "81", ireq->implementationId));
1148
1149     ireq->implementationName = odr_prepend(c->odr_out,
1150         ZOOM_options_get(c->options, "implementationName"),
1151         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1152
1153     version = odr_strdup(c->odr_out, "$Revision: 1.71 $");
1154     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1155         version[strlen(version)-2] = '\0';
1156     ireq->implementationVersion = odr_prepend(c->odr_out,
1157         ZOOM_options_get(c->options, "implementationVersion"),
1158         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1159
1160     *ireq->maximumRecordSize =
1161         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1162     *ireq->preferredMessageSize =
1163         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1164
1165     if (auth_groupId || auth_password)
1166     {
1167         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1168         int i = 0;
1169         pass->groupId = 0;
1170         if (auth_groupId && *auth_groupId)
1171         {
1172             pass->groupId = (char *)
1173                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1174             strcpy(pass->groupId, auth_groupId);
1175             i++;
1176         }
1177         pass->userId = 0;
1178         if (auth_userId && *auth_userId)
1179         {
1180             pass->userId = (char *)
1181                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1182             strcpy(pass->userId, auth_userId);
1183             i++;
1184         }
1185         pass->password = 0;
1186         if (auth_password && *auth_password)
1187         {
1188             pass->password = (char *)
1189                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1190             strcpy(pass->password, auth_password);
1191             i++;
1192         }
1193         if (i)
1194         {
1195             auth->which = Z_IdAuthentication_idPass;
1196             auth->u.idPass = pass;
1197             ireq->idAuthentication = auth;
1198         }
1199     }
1200     else if (auth_userId)
1201     {
1202         auth->which = Z_IdAuthentication_open;
1203         auth->u.open = (char *)
1204             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1205         strcpy(auth->u.open, auth_userId);
1206         ireq->idAuthentication = auth;
1207     }
1208     if (c->proxy)
1209         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1210                                  VAL_PROXY, 1, c->host_port);
1211     if (c->charset || c->lang)
1212     {
1213         Z_OtherInformation **oi;
1214         Z_OtherInformationUnit *oi_unit;
1215
1216         yaz_oi_APDU(apdu, &oi);
1217
1218         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1219         {
1220             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1221             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1222             oi_unit->information.externallyDefinedInfo =
1223                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1224                                               c->charset, c->lang, 1);
1225         }
1226     }
1227     assert (apdu);
1228     return send_APDU (c, apdu);
1229 }
1230
1231 #if HAVE_XML2
1232 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1233 {
1234     Z_SOAP_Handler h[2] = {
1235         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1236         {0, 0, 0}
1237     };
1238     ODR o = odr_createmem(ODR_ENCODE);
1239     int ret;
1240     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1241     Z_GDU *gdu;
1242     ZOOM_Event event;
1243
1244     gdu = z_get_HTTP_Request(c->odr_out);
1245     gdu->u.HTTP_Request->path = c->path;
1246
1247     if (c->host_port)
1248     {
1249         const char *cp0 = strstr(c->host_port, "://");
1250         const char *cp1 = 0;
1251         if (cp0)
1252             cp0 = cp0+3;
1253         else
1254             cp0 = c->host_port;
1255
1256         cp1 = strchr(cp0, '/');
1257         if (!cp1)
1258             cp1 = cp0+strlen(cp0);
1259
1260         if (cp0 && cp1)
1261         {
1262             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1263             memcpy (h, cp0, cp1 - cp0);
1264             h[cp1-cp0] = '\0';
1265             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1266                               "Host", h);
1267         }
1268     }
1269
1270     if (c->sru_mode == zoom_sru_get)
1271     {
1272         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1273     }
1274     else if (c->sru_mode == zoom_sru_post)
1275     {
1276         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1277     }
1278     else if (c->sru_mode == zoom_sru_soap)
1279     {
1280         z_HTTP_header_add_content_type(c->odr_out,
1281                                        &gdu->u.HTTP_Request->headers,
1282                                        "text/xml", c->charset);
1283
1284         z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1285                           "SOAPAction", "\"\"");
1286         p->which = Z_SOAP_generic;
1287         p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1288         p->u.generic->no = 0;
1289         p->u.generic->ns = 0;
1290         p->u.generic->p = sr;
1291         p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1292
1293         ret = z_soap_codec_enc(o, &p,
1294                                &gdu->u.HTTP_Request->content_buf,
1295                                &gdu->u.HTTP_Request->content_len, h,
1296                                c->charset);
1297
1298     }
1299     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1300         return zoom_complete;
1301     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1302     odr_destroy(o);
1303
1304     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1305     ZOOM_connection_put_event (c, event);
1306     odr_reset(c->odr_out);
1307     return do_write (c);
1308 }
1309 #endif
1310
1311 #if HAVE_XML2
1312 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1313 {
1314     int i;
1315     ZOOM_resultset resultset = 0;
1316     Z_SRW_PDU *sr = 0;
1317     const char *recordPacking = 0;
1318
1319     if (c->error)                  /* don't continue on error */
1320         return zoom_complete;
1321     assert (c->tasks);
1322     if (c->tasks->which == ZOOM_TASK_SEARCH)
1323     {
1324         resultset = c->tasks->u.search.resultset;
1325         resultset->setname = xstrdup ("default");
1326         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1327     }
1328     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1329     {
1330         resultset = c->tasks->u.retrieve.resultset;
1331
1332         resultset->start = c->tasks->u.retrieve.start;
1333         resultset->count = c->tasks->u.retrieve.count;
1334
1335         if (resultset->start >= resultset->size)
1336             return zoom_complete;
1337         if (resultset->start + resultset->count > resultset->size)
1338             resultset->count = resultset->size - resultset->start;
1339
1340         for (i = 0; i<resultset->count; i++)
1341         {
1342             ZOOM_record rec =
1343                 record_cache_lookup (resultset, i + resultset->start);
1344             if (!rec)
1345                 break;
1346         }
1347         if (i == resultset->count)
1348             return zoom_complete;
1349     }
1350     assert(resultset->query);
1351
1352     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1353
1354     if (resultset->query->z_query->which == Z_Query_type_104
1355         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1356     {
1357
1358         sr->u.request->query_type = Z_SRW_query_type_cql;
1359         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1360     }
1361     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1362              resultset->query->z_query->u.type_1)
1363     {
1364         sr->u.request->query_type = Z_SRW_query_type_pqf;
1365         sr->u.request->query.pqf = resultset->query->query_string;
1366     }
1367     else
1368     {
1369         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1370         return zoom_complete;
1371     }
1372     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1373     sr->u.request->maximumRecords = odr_intdup (
1374         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1375     sr->u.request->recordSchema = resultset->schema;
1376
1377     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1378
1379     if (recordPacking)
1380         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1381
1382     return send_srw(c, sr);
1383 }
1384 #else
1385 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1386 {
1387     return zoom_complete;
1388 }
1389 #endif
1390
1391 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1392 {
1393     ZOOM_resultset r;
1394     int lslb, ssub, mspn;
1395     const char *syntax;
1396     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1397     Z_SearchRequest *search_req = apdu->u.searchRequest;
1398     const char *elementSetName;
1399     const char *smallSetElementSetName;
1400     const char *mediumSetElementSetName;
1401
1402     assert (c->tasks);
1403     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1404
1405     r = c->tasks->u.search.resultset;
1406
1407     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1408
1409     elementSetName =
1410         ZOOM_options_get (r->options, "elementSetName");
1411     smallSetElementSetName  =
1412         ZOOM_options_get (r->options, "smallSetElementSetName");
1413     mediumSetElementSetName =
1414         ZOOM_options_get (r->options, "mediumSetElementSetName");
1415
1416     if (!smallSetElementSetName)
1417         smallSetElementSetName = elementSetName;
1418
1419     if (!mediumSetElementSetName)
1420         mediumSetElementSetName = elementSetName;
1421
1422     assert (r);
1423     assert (r->query);
1424
1425     /* prepare query for the search request */
1426     search_req->query = r->query->z_query;
1427     if (!search_req->query)
1428     {
1429         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1430         return zoom_complete;
1431     }
1432
1433     search_req->databaseNames =
1434         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1435
1436     /* get syntax (no need to provide unless piggyback is in effect) */
1437     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1438
1439     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1440     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1441     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1442     if (lslb != -1 && ssub != -1 && mspn != -1)
1443     {
1444         /* So're a Z39.50 expert? Let's hope you don't do sort */
1445         *search_req->largeSetLowerBound = lslb;
1446         *search_req->smallSetUpperBound = ssub;
1447         *search_req->mediumSetPresentNumber = mspn;
1448     }
1449     else if (r->start == 0 && r->count > 0
1450              && r->piggyback && !r->r_sort_spec && !r->schema)
1451     {
1452         /* Regular piggyback - do it unless we're going to do sort */
1453         *search_req->largeSetLowerBound = 2000000000;
1454         *search_req->smallSetUpperBound = 1;
1455         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1456     }
1457     else
1458     {
1459         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1460         smallSetElementSetName = 0;
1461         mediumSetElementSetName = 0;
1462         syntax = 0;
1463     }
1464     if (smallSetElementSetName && *smallSetElementSetName)
1465     {
1466         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1467             odr_malloc (c->odr_out, sizeof(*esn));
1468
1469         esn->which = Z_ElementSetNames_generic;
1470         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1471         search_req->smallSetElementSetNames = esn;
1472     }
1473     if (mediumSetElementSetName && *mediumSetElementSetName)
1474     {
1475         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1476             odr_malloc (c->odr_out, sizeof(*esn));
1477
1478         esn->which = Z_ElementSetNames_generic;
1479         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1480         search_req->mediumSetElementSetNames = esn;
1481     }
1482     if (syntax)
1483         search_req->preferredRecordSyntax =
1484             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1485
1486     if (!r->setname)
1487     {
1488         if (c->support_named_resultsets)
1489         {
1490             char setname[14];
1491             int ord;
1492             /* find the lowest unused ordinal so that we re-use
1493                result sets on the server. */
1494             for (ord = 1; ; ord++)
1495             {
1496                 ZOOM_resultset rp;
1497                 sprintf (setname, "%d", ord);
1498                 for (rp = c->resultsets; rp; rp = rp->next)
1499                     if (rp->setname && !strcmp (rp->setname, setname))
1500                         break;
1501                 if (!rp)
1502                     break;
1503             }
1504             r->setname = xstrdup (setname);
1505             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1506                     "set %s", c, r->setname);
1507         }
1508         else
1509         {
1510             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1511                     "default set", c);
1512             r->setname = xstrdup ("default");
1513         }
1514         ZOOM_options_set (r->options, "setname", r->setname);
1515     }
1516     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1517     return send_APDU (c, apdu);
1518 }
1519
1520 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1521 {
1522     int oclass;
1523     char *addinfo = 0;
1524
1525     switch (r->which)
1526     {
1527     case Z_DefaultDiagFormat_v2Addinfo:
1528         addinfo = r->u.v2Addinfo;
1529         break;
1530     case Z_DefaultDiagFormat_v3Addinfo:
1531         addinfo = r->u.v3Addinfo;
1532         break;
1533     }
1534     xfree (c->addinfo);
1535     c->addinfo = 0;
1536     set_dset_error(c, *r->condition,
1537                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1538                    addinfo, 0);
1539 }
1540
1541 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1542 {
1543     if (p->which != Z_DiagRec_defaultFormat)
1544         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1545     else
1546         response_default_diag(c, p->u.defaultFormat);
1547 }
1548
1549 ZOOM_API(ZOOM_record)
1550 ZOOM_record_clone (ZOOM_record srec)
1551 {
1552     char *buf;
1553     int size;
1554     ODR odr_enc;
1555     ZOOM_record nrec;
1556
1557     odr_enc = odr_createmem(ODR_ENCODE);
1558     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1559         return 0;
1560     buf = odr_getbuf (odr_enc, &size, 0);
1561
1562     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1563     nrec->odr = odr_createmem(ODR_DECODE);
1564     nrec->wrbuf_marc = 0;
1565     nrec->wrbuf_iconv = 0;
1566     nrec->wrbuf_opac = 0;
1567     odr_setbuf (nrec->odr, buf, size, 0);
1568     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1569
1570     odr_destroy (odr_enc);
1571     return nrec;
1572 }
1573
1574 ZOOM_API(ZOOM_record)
1575 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1576 {
1577     return record_cache_lookup (s, pos);
1578 }
1579
1580 ZOOM_API(ZOOM_record)
1581 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1582 {
1583     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1584
1585     if (!rec)
1586     {
1587         /*
1588          * MIKE: I think force_sync should always be zero, but I don't
1589          * want to make this change until I get the go-ahead from
1590          * Adam, in case something depends on the old synchronous
1591          * behaviour.
1592          */
1593         int force_sync = 1;
1594         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1595         ZOOM_resultset_retrieve (r, force_sync, pos, 1);
1596         rec = ZOOM_resultset_record_immediate (r, pos);
1597     }
1598     return rec;
1599 }
1600
1601 ZOOM_API(void)
1602 ZOOM_record_destroy (ZOOM_record rec)
1603 {
1604     if (!rec)
1605         return;
1606     if (rec->wrbuf_marc)
1607         wrbuf_free (rec->wrbuf_marc, 1);
1608     if (rec->wrbuf_iconv)
1609         wrbuf_free (rec->wrbuf_iconv, 1);
1610     if (rec->wrbuf_opac)
1611         wrbuf_free (rec->wrbuf_opac, 1);
1612     odr_destroy (rec->odr);
1613     xfree (rec);
1614 }
1615
1616 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1617                                      int *len,
1618                                      const char *buf, int sz,
1619                                      const char *record_charset)
1620 {
1621     char to[40];
1622     char from[40];
1623     yaz_iconv_t cd = 0;
1624     yaz_marc_t mt = yaz_marc_create();
1625
1626     *from = '\0';
1627     strcpy(to, "UTF-8");
1628     if (record_charset && *record_charset)
1629     {
1630         /* Use "from,to" or just "from" */
1631         const char *cp = strchr(record_charset, ',');
1632         int clen = strlen(record_charset);
1633         if (cp && cp[1])
1634         {
1635             strncpy( to, cp+1, sizeof(to)-1);
1636             to[sizeof(to)-1] = '\0';
1637             clen = cp - record_charset;
1638         }
1639         if (clen > sizeof(from)-1)
1640             clen = sizeof(from)-1;
1641
1642         if (clen)
1643             strncpy(from, record_charset, clen);
1644         from[clen] = '\0';
1645     }
1646
1647     if (*from && *to)
1648     {
1649         cd = yaz_iconv_open(to, from);
1650         yaz_marc_iconv(mt, cd);
1651     }
1652
1653     yaz_marc_xml(mt, marc_type);
1654     if (!rec->wrbuf_marc)
1655         rec->wrbuf_marc = wrbuf_alloc();
1656     wrbuf_rewind (rec->wrbuf_marc);
1657     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1658     {
1659         yaz_marc_destroy(mt);
1660         if (cd)
1661             yaz_iconv_close(cd);
1662         if (len)
1663             *len = wrbuf_len(rec->wrbuf_marc);
1664         return wrbuf_buf(rec->wrbuf_marc);
1665     }
1666     yaz_marc_destroy(mt);
1667     if (cd)
1668         yaz_iconv_close(cd);
1669     return 0;
1670 }
1671
1672 static const char *record_iconv_return(ZOOM_record rec, int *len,
1673                                        const char *buf, int sz,
1674                                        const char *record_charset)
1675 {
1676     char to[40];
1677     char from[40];
1678     yaz_iconv_t cd = 0;
1679
1680     *from = '\0';
1681     strcpy(to, "UTF-8");
1682     if (record_charset && *record_charset)
1683     {
1684         /* Use "from,to" or just "from" */
1685         const char *cp = strchr(record_charset, ',');
1686         int clen = strlen(record_charset);
1687         if (cp && cp[1])
1688         {
1689             strncpy( to, cp+1, sizeof(to)-1);
1690             to[sizeof(to)-1] = '\0';
1691             clen = cp - record_charset;
1692         }
1693         if (clen > sizeof(from)-1)
1694             clen = sizeof(from)-1;
1695
1696         if (clen)
1697             strncpy(from, record_charset, clen);
1698         from[clen] = '\0';
1699     }
1700
1701     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1702     {
1703         char outbuf[12];
1704         size_t inbytesleft = sz;
1705         const char *inp = buf;
1706
1707         if (!rec->wrbuf_iconv)
1708             rec->wrbuf_iconv = wrbuf_alloc();
1709
1710         wrbuf_rewind(rec->wrbuf_iconv);
1711
1712         while (inbytesleft)
1713         {
1714             size_t outbytesleft = sizeof(outbuf);
1715             char *outp = outbuf;
1716             size_t r = yaz_iconv (cd, (char**) &inp,
1717                                   &inbytesleft,
1718                                   &outp, &outbytesleft);
1719             if (r == (size_t) (-1))
1720             {
1721                 int e = yaz_iconv_error(cd);
1722                 if (e != YAZ_ICONV_E2BIG)
1723                     break;
1724             }
1725             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1726         }
1727         wrbuf_puts(rec->wrbuf_iconv, "");
1728         buf = wrbuf_buf(rec->wrbuf_iconv);
1729         sz = wrbuf_len(rec->wrbuf_iconv);
1730         yaz_iconv_close(cd);
1731     }
1732     if (len)
1733         *len = sz;
1734     return buf;
1735 }
1736
1737 ZOOM_API(const char *)
1738 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1739 {
1740     char type[40];
1741     char charset[40];
1742     char xpath[512];
1743     const char *cp;
1744     int i;
1745     Z_NamePlusRecord *npr;
1746
1747     if (len)
1748         *len = 0; /* default return */
1749
1750     if (!rec)
1751         return 0;
1752     npr = rec->npr;
1753     if (!npr)
1754         return 0;
1755
1756     cp = type_spec;
1757     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1758     {
1759         if (cp[i] == ';' || cp[i] == ' ')
1760             break;
1761         type[i] = cp[i];
1762     }
1763     type[i] = '\0';
1764     charset[0] = '\0';
1765     while (type_spec[i] == ';')
1766     {
1767         i++;
1768         while (type_spec[i] == ' ')
1769             i++;
1770         if (!strncmp(type_spec+i, "charset=", 8))
1771         {
1772             int j = 0;
1773             i = i + 8; /* skip charset= */
1774             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1775             {
1776                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1777                     break;
1778                 charset[j] = cp[i];
1779             }
1780             charset[j] = '\0';
1781         }
1782         else if (!strncmp(type_spec+i, "xpath=", 6))
1783         {
1784             int j = 0;
1785             i = i + 6;
1786             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1787                 xpath[j] = cp[i];
1788             xpath[j] = '\0';
1789         }
1790         while (type_spec[i] == ' ')
1791             i++;
1792     }
1793     if (!strcmp (type, "database"))
1794     {
1795         if (len)
1796             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1797         return npr->databaseName;
1798     }
1799     else if (!strcmp (type, "syntax"))
1800     {
1801         const char *desc = 0;
1802         if (npr->which == Z_NamePlusRecord_databaseRecord)
1803         {
1804             Z_External *r = (Z_External *) npr->u.databaseRecord;
1805             oident *ent = oid_getentbyoid(r->direct_reference);
1806             if (ent)
1807                 desc = ent->desc;
1808         }
1809         if (!desc)
1810             desc = "none";
1811         if (len)
1812             *len = strlen(desc);
1813         return desc;
1814     }
1815     if (npr->which != Z_NamePlusRecord_databaseRecord)
1816         return 0;
1817
1818     /* from now on - we have a database record .. */
1819     if (!strcmp (type, "render"))
1820     {
1821         Z_External *r = (Z_External *) npr->u.databaseRecord;
1822         oident *ent = oid_getentbyoid(r->direct_reference);
1823
1824         /* render bibliographic record .. */
1825         if (r->which == Z_External_OPAC)
1826         {
1827             r = r->u.opac->bibliographicRecord;
1828             if (!r)
1829                 return 0;
1830             ent = oid_getentbyoid(r->direct_reference);
1831         }
1832         if (r->which == Z_External_sutrs)
1833             return record_iconv_return(rec, len,
1834                                        (char*) r->u.sutrs->buf,
1835                                        r->u.sutrs->len,
1836                                        charset);
1837         else if (r->which == Z_External_octet)
1838         {
1839             const char *ret_buf;
1840             switch (ent->value)
1841             {
1842             case VAL_SOIF:
1843             case VAL_HTML:
1844             case VAL_SUTRS:
1845                 break;
1846             case VAL_TEXT_XML:
1847             case VAL_APPLICATION_XML:
1848                 break;
1849             default:
1850                 ret_buf = marc_iconv_return(
1851                     rec, YAZ_MARC_LINE, len,
1852                     (const char *) r->u.octet_aligned->buf,
1853                     r->u.octet_aligned->len,
1854                     charset);
1855                 if (ret_buf)
1856                     return ret_buf;
1857             }
1858             return record_iconv_return(rec, len,
1859                                        (const char *) r->u.octet_aligned->buf,
1860                                        r->u.octet_aligned->len,
1861                                        charset);
1862         }
1863         else if (r->which == Z_External_grs1)
1864         {
1865             if (!rec->wrbuf_marc)
1866                 rec->wrbuf_marc = wrbuf_alloc();
1867             wrbuf_rewind (rec->wrbuf_marc);
1868             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1869             return record_iconv_return(rec, len,
1870                                        wrbuf_buf(rec->wrbuf_marc),
1871                                        wrbuf_len(rec->wrbuf_marc),
1872                                        charset);
1873         }
1874         return 0;
1875     }
1876     else if (!strcmp (type, "xml"))
1877     {
1878         Z_External *r = (Z_External *) npr->u.databaseRecord;
1879         oident *ent = oid_getentbyoid(r->direct_reference);
1880
1881         /* render bibliographic record .. */
1882         if (r->which == Z_External_OPAC)
1883         {
1884             r = r->u.opac->bibliographicRecord;
1885             if (!r)
1886                 return 0;
1887             ent = oid_getentbyoid(r->direct_reference);
1888         }
1889
1890         if (r->which == Z_External_sutrs)
1891             return record_iconv_return(rec, len,
1892                                        (const char *) r->u.sutrs->buf,
1893                                        r->u.sutrs->len,
1894                                        charset);
1895         else if (r->which == Z_External_octet)
1896         {
1897             const char *ret_buf;
1898             int marc_decode_type = YAZ_MARC_MARCXML;
1899
1900             switch (ent->value)
1901             {
1902             case VAL_SOIF:
1903             case VAL_HTML:
1904             case VAL_SUTRS:
1905                 break;
1906             case VAL_TEXT_XML:
1907             case VAL_APPLICATION_XML:
1908                 break;
1909             default:
1910                 ret_buf = marc_iconv_return(
1911                     rec, marc_decode_type, len,
1912                     (const char *) r->u.octet_aligned->buf,
1913                     r->u.octet_aligned->len,
1914                     charset);
1915                 if (ret_buf)
1916                     return ret_buf;
1917             }
1918             return record_iconv_return(rec, len,
1919                                        (const char *) r->u.octet_aligned->buf,
1920                                        r->u.octet_aligned->len,
1921                                        charset);
1922         }
1923         else if (r->which == Z_External_grs1)
1924         {
1925             if (len) *len = 5;
1926             return "GRS-1";
1927         }
1928         return 0;
1929     }
1930     else if (!strcmp (type, "raw"))
1931     {
1932         Z_External *r = (Z_External *) npr->u.databaseRecord;
1933
1934         if (r->which == Z_External_sutrs)
1935         {
1936             if (len) *len = r->u.sutrs->len;
1937             return (const char *) r->u.sutrs->buf;
1938         }
1939         else if (r->which == Z_External_octet)
1940         {
1941             if (len) *len = r->u.octet_aligned->len;
1942             return (const char *) r->u.octet_aligned->buf;
1943         }
1944         else /* grs-1, explain, OPAC, ... */
1945         {
1946             if (len) *len = -1;
1947             return (const char *) npr->u.databaseRecord;
1948         }
1949         return 0;
1950     }
1951     else if (!strcmp (type, "ext"))
1952     {
1953         if (len) *len = -1;
1954         return (const char *) npr->u.databaseRecord;
1955     }
1956     else if (!strcmp (type, "opac"))
1957
1958     {
1959         Z_External *r = (Z_External *) npr->u.databaseRecord;
1960         if (r->which == Z_External_OPAC)
1961         {
1962             if (!rec->wrbuf_opac)
1963                 rec->wrbuf_opac = wrbuf_alloc();
1964             wrbuf_rewind (rec->wrbuf_opac);
1965             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1966             return record_iconv_return(rec, len,
1967                                        wrbuf_buf(rec->wrbuf_opac),
1968                                        wrbuf_len(rec->wrbuf_opac),
1969                                        charset);
1970         }
1971     }
1972     return 0;
1973 }
1974
1975 static int strcmp_null(const char *v1, const char *v2)
1976 {
1977     if (!v1 && !v2)
1978         return 0;
1979     if (!v1 || !v2)
1980         return -1;
1981     return strcmp(v1, v2);
1982 }
1983
1984 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1985                               int pos)
1986 {
1987     ZOOM_record_cache rc;
1988     const char *elementSetName =
1989         ZOOM_resultset_option_get (r, "elementSetName");
1990     const char *syntax =
1991         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1992
1993     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1994     ZOOM_connection_put_event(r->connection, event);
1995
1996     for (rc = r->record_cache; rc; rc = rc->next)
1997     {
1998         if (pos == rc->pos)
1999         {
2000             if (strcmp_null(r->schema, rc->schema))
2001                 continue;
2002             if (strcmp_null(elementSetName,rc->elementSetName))
2003                 continue;
2004             if (strcmp_null(syntax, rc->syntax))
2005                 continue;
2006             /* not destroying rc->npr (it's handled by nmem )*/
2007             rc->rec.npr = npr;
2008             /* keeping wrbuf_marc too */
2009             return;
2010         }
2011     }
2012     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
2013     rc->rec.npr = npr;
2014     rc->rec.odr = 0;
2015     rc->rec.wrbuf_marc = 0;
2016     rc->rec.wrbuf_iconv = 0;
2017     rc->rec.wrbuf_opac = 0;
2018     if (elementSetName)
2019         rc->elementSetName = odr_strdup (r->odr, elementSetName);
2020     else
2021         rc->elementSetName = 0;
2022
2023     if (syntax)
2024         rc->syntax = odr_strdup (r->odr, syntax);
2025     else
2026         rc->syntax = 0;
2027
2028     if (r->schema)
2029         rc->schema = odr_strdup (r->odr, r->schema);
2030     else
2031         rc->schema = 0;
2032
2033     rc->pos = pos;
2034     rc->next = r->record_cache;
2035     r->record_cache = rc;
2036 }
2037
2038 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
2039 {
2040     ZOOM_record_cache rc;
2041     const char *elementSetName =
2042         ZOOM_resultset_option_get (r, "elementSetName");
2043     const char *syntax =
2044         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2045
2046     for (rc = r->record_cache; rc; rc = rc->next)
2047     {
2048         if (pos == rc->pos)
2049         {
2050             if (strcmp_null(r->schema, rc->schema))
2051                 continue;
2052             if (strcmp_null(elementSetName,rc->elementSetName))
2053                 continue;
2054             if (strcmp_null(syntax, rc->syntax))
2055                 continue;
2056             return &rc->rec;
2057         }
2058     }
2059     return 0;
2060 }
2061
2062 static void handle_records (ZOOM_connection c, Z_Records *sr,
2063                             int present_phase)
2064 {
2065     ZOOM_resultset resultset;
2066
2067     if (!c->tasks)
2068         return ;
2069     switch (c->tasks->which)
2070     {
2071     case ZOOM_TASK_SEARCH:
2072         resultset = c->tasks->u.search.resultset;
2073         break;
2074     case ZOOM_TASK_RETRIEVE:
2075         resultset = c->tasks->u.retrieve.resultset;
2076         break;
2077     default:
2078         return;
2079     }
2080     if (sr && sr->which == Z_Records_NSD)
2081         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2082     else if (sr && sr->which == Z_Records_multipleNSD)
2083     {
2084         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2085             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2086         else
2087             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2088     }
2089     else
2090     {
2091         if (resultset->count + resultset->start > resultset->size)
2092             resultset->count = resultset->size - resultset->start;
2093         if (resultset->count < 0)
2094             resultset->count = 0;
2095         if (sr && sr->which == Z_Records_DBOSD)
2096         {
2097             int i;
2098             NMEM nmem = odr_extract_mem (c->odr_in);
2099             Z_NamePlusRecordList *p =
2100                 sr->u.databaseOrSurDiagnostics;
2101             for (i = 0; i<p->num_records; i++)
2102             {
2103                 record_cache_add (resultset, p->records[i],
2104                                   i+ resultset->start);
2105             }
2106             /* transfer our response to search_nmem .. we need it later */
2107             nmem_transfer (resultset->odr->mem, nmem);
2108             nmem_destroy (nmem);
2109             if (present_phase && p->num_records == 0)
2110             {
2111                 /* present response and we didn't get any records! */
2112                 Z_NamePlusRecord *myrec =
2113                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2114                 record_cache_add(resultset, myrec, resultset->start);
2115             }
2116         }
2117         else if (present_phase)
2118         {
2119             /* present response and we didn't get any records! */
2120             Z_NamePlusRecord *myrec =
2121                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2122             record_cache_add(resultset, myrec, resultset->start);
2123         }
2124     }
2125 }
2126
2127 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2128 {
2129     handle_records (c, pr->records, 1);
2130 }
2131
2132 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2133                                        Z_Term *term)
2134 {
2135     switch (term->which)
2136     {
2137     case Z_Term_general:
2138         ZOOM_options_setl(opt, name,
2139                           (const char *)(term->u.general->buf),
2140                           term->u.general->len);
2141         break;
2142     case Z_Term_characterString:
2143         ZOOM_options_set(opt, name, term->u.characterString);
2144         break;
2145     case Z_Term_numeric:
2146         ZOOM_options_set_int(opt, name, *term->u.numeric);
2147         break;
2148     }
2149 }
2150
2151 static void handle_queryExpression(ZOOM_options opt, const char *name,
2152                                    Z_QueryExpression *exp)
2153 {
2154     char opt_name[80];
2155
2156     switch (exp->which)
2157     {
2158     case Z_QueryExpression_term:
2159         if (exp->u.term && exp->u.term->queryTerm)
2160         {
2161             sprintf(opt_name, "%s.term", name);
2162             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2163         }
2164         break;
2165     case Z_QueryExpression_query:
2166         break;
2167     }
2168 }
2169
2170 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2171                                 Z_OtherInformation *o)
2172 {
2173     int i;
2174     for (i = 0; o && i < o->num_elements; i++)
2175     {
2176         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2177         {
2178             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2179
2180             if (ext->which == Z_External_searchResult1)
2181             {
2182                 int j;
2183                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2184
2185                 if (sr->num)
2186                     ZOOM_options_set_int(
2187                         resultset->options, "searchresult.size", sr->num);
2188
2189                 for (j = 0; j < sr->num; j++)
2190                 {
2191                     Z_SearchInfoReport_s *ent =
2192                         ext->u.searchResult1->elements[j];
2193                     char pref[80];
2194
2195                     sprintf(pref, "searchresult.%d", j);
2196
2197                     if (ent->subqueryId)
2198                     {
2199                         char opt_name[80];
2200                         sprintf(opt_name, "%s.id", pref);
2201                         ZOOM_options_set(resultset->options, opt_name,
2202                                          ent->subqueryId);
2203                     }
2204                     if (ent->subqueryExpression)
2205                     {
2206                         char opt_name[80];
2207                         sprintf(opt_name, "%s.subquery", pref);
2208                         handle_queryExpression(resultset->options, opt_name,
2209                                                ent->subqueryExpression);
2210                     }
2211                     if (ent->subqueryInterpretation)
2212                     {
2213                         char opt_name[80];
2214                         sprintf(opt_name, "%s.interpretation", pref);
2215                         handle_queryExpression(resultset->options, opt_name,
2216                                                ent->subqueryInterpretation);
2217                     }
2218                     if (ent->subqueryRecommendation)
2219                     {
2220                         char opt_name[80];
2221                         sprintf(opt_name, "%s.recommendation", pref);
2222                         handle_queryExpression(resultset->options, opt_name,
2223                                                ent->subqueryRecommendation);
2224                     }
2225                     if (ent->subqueryCount)
2226                     {
2227                         char opt_name[80];
2228                         sprintf(opt_name, "%s.count", pref);
2229                         ZOOM_options_set_int(resultset->options, opt_name,
2230                                              *ent->subqueryCount);
2231                     }
2232                 }
2233             }
2234         }
2235     }
2236 }
2237
2238 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2239 {
2240     ZOOM_resultset resultset;
2241     ZOOM_Event event;
2242
2243     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2244         return ;
2245
2246     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2247     ZOOM_connection_put_event(c, event);
2248
2249     resultset = c->tasks->u.search.resultset;
2250
2251     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2252
2253     resultset->size = *sr->resultCount;
2254     handle_records (c, sr->records, 0);
2255 }
2256
2257 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2258 {
2259     if (res->diagnostics && res->num_diagnostics > 0)
2260         response_diag (c, res->diagnostics[0]);
2261 }
2262
2263 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2264 {
2265     NMEM nmem = odr_extract_mem (c->odr_in);
2266     ZOOM_scanset scan;
2267
2268     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2269         return 0;
2270     scan = c->tasks->u.scan.scan;
2271
2272     if (res->entries && res->entries->nonsurrogateDiagnostics)
2273         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2274     scan->scan_response = res;
2275     nmem_transfer (scan->odr->mem, nmem);
2276     if (res->stepSize)
2277         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2278     if (res->positionOfTerm)
2279         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2280     if (res->scanStatus)
2281         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2282     if (res->numberOfEntriesReturned)
2283         ZOOM_options_set_int (scan->options, "number",
2284                               *res->numberOfEntriesReturned);
2285     nmem_destroy (nmem);
2286     return 1;
2287 }
2288
2289 static zoom_ret send_sort (ZOOM_connection c,
2290                            ZOOM_resultset resultset)
2291 {
2292     if (c->error)
2293         resultset->r_sort_spec = 0;
2294     if (resultset->r_sort_spec)
2295     {
2296         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2297         Z_SortRequest *req = apdu->u.sortRequest;
2298
2299         req->num_inputResultSetNames = 1;
2300         req->inputResultSetNames = (Z_InternationalString **)
2301             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2302         req->inputResultSetNames[0] =
2303             odr_strdup (c->odr_out, resultset->setname);
2304         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2305         req->sortSequence = resultset->r_sort_spec;
2306         resultset->r_sort_spec = 0;
2307         return send_APDU (c, apdu);
2308     }
2309     return zoom_complete;
2310 }
2311
2312 static zoom_ret send_present(ZOOM_connection c)
2313 {
2314     Z_APDU *apdu = 0;
2315     Z_PresentRequest *req = 0;
2316     int i = 0;
2317     const char *syntax = 0;
2318     const char *elementSetName = 0;
2319     ZOOM_resultset  resultset;
2320
2321     if (!c->tasks)
2322     {
2323         yaz_log(log_details, "%p send_present no tasks", c);
2324         return zoom_complete;
2325     }
2326     switch (c->tasks->which)
2327     {
2328     case ZOOM_TASK_SEARCH:
2329         resultset = c->tasks->u.search.resultset;
2330         break;
2331     case ZOOM_TASK_RETRIEVE:
2332         resultset = c->tasks->u.retrieve.resultset;
2333         resultset->start = c->tasks->u.retrieve.start;
2334         resultset->count = c->tasks->u.retrieve.count;
2335
2336         if (resultset->start >= resultset->size)
2337         {
2338             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2339                     c, resultset->start, resultset->size);
2340             return zoom_complete;
2341         }
2342         if (resultset->start + resultset->count > resultset->size)
2343             resultset->count = resultset->size - resultset->start;
2344         break;
2345     default:
2346         return zoom_complete;
2347     }
2348     yaz_log(log_details, "%p send_present start=%d count=%d",
2349             c, resultset->start, resultset->count);
2350
2351     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2352     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2353
2354     if (c->error)                  /* don't continue on error */
2355         return zoom_complete;
2356     if (resultset->start < 0)
2357         return zoom_complete;
2358     for (i = 0; i<resultset->count; i++)
2359     {
2360         ZOOM_record rec =
2361             record_cache_lookup (resultset, i + resultset->start);
2362         if (!rec)
2363             break;
2364     }
2365     if (i == resultset->count)
2366     {
2367         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2368         return zoom_complete;
2369     }
2370
2371     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2372     req = apdu->u.presentRequest;
2373
2374     resultset->start += i;
2375     resultset->count -= i;
2376
2377     if (i)
2378         yaz_log(log_details, "%p send_present skip=%d", c, i);
2379
2380     *req->resultSetStartPoint = resultset->start + 1;
2381     *req->numberOfRecordsRequested = resultset->step>0 ?
2382         resultset->step : resultset->count;
2383     if (*req->numberOfRecordsRequested + resultset->start > resultset->size)
2384         *req->numberOfRecordsRequested = resultset->size -  resultset->start;
2385     assert (*req->numberOfRecordsRequested > 0);
2386
2387     if (syntax && *syntax)
2388         req->preferredRecordSyntax =
2389             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2390
2391     if (resultset->schema && *resultset->schema)
2392     {
2393         Z_RecordComposition *compo = (Z_RecordComposition *)
2394             odr_malloc (c->odr_out, sizeof(*compo));
2395
2396         req->recordComposition = compo;
2397         compo->which = Z_RecordComp_complex;
2398         compo->u.complex = (Z_CompSpec *)
2399             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2400         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2401             odr_malloc(c->odr_out, sizeof(bool_t));
2402         *compo->u.complex->selectAlternativeSyntax = 0;
2403
2404         compo->u.complex->generic = (Z_Specification *)
2405             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2406
2407         compo->u.complex->generic->which = Z_Schema_oid;
2408         compo->u.complex->generic->schema.oid = (Odr_oid *)
2409             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2410
2411         if (!compo->u.complex->generic->schema.oid)
2412         {
2413             /* OID wasn't a schema! Try record syntax instead. */
2414
2415             compo->u.complex->generic->schema.oid = (Odr_oid *)
2416                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2417         }
2418         if (elementSetName && *elementSetName)
2419         {
2420             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2421                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2422             compo->u.complex->generic->elementSpec->which =
2423                 Z_ElementSpec_elementSetName;
2424             compo->u.complex->generic->elementSpec->u.elementSetName =
2425                 odr_strdup (c->odr_out, elementSetName);
2426         }
2427         else
2428             compo->u.complex->generic->elementSpec = 0;
2429         compo->u.complex->num_dbSpecific = 0;
2430         compo->u.complex->dbSpecific = 0;
2431         compo->u.complex->num_recordSyntax = 0;
2432         compo->u.complex->recordSyntax = 0;
2433     }
2434     else if (elementSetName && *elementSetName)
2435     {
2436         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2437             odr_malloc (c->odr_out, sizeof(*esn));
2438         Z_RecordComposition *compo = (Z_RecordComposition *)
2439             odr_malloc (c->odr_out, sizeof(*compo));
2440
2441         esn->which = Z_ElementSetNames_generic;
2442         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2443         compo->which = Z_RecordComp_simple;
2444         compo->u.simple = esn;
2445         req->recordComposition = compo;
2446     }
2447     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2448     return send_APDU (c, apdu);
2449 }
2450
2451 ZOOM_API(ZOOM_scanset)
2452 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2453 {
2454     ZOOM_scanset s;
2455     ZOOM_query q = ZOOM_query_create();
2456
2457     ZOOM_query_prefix (q, start);
2458
2459     s = ZOOM_connection_scan1(c, q);
2460     ZOOM_query_destroy (q);
2461     return s;
2462
2463 }
2464
2465 ZOOM_API(ZOOM_scanset)
2466 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query q)
2467 {
2468     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2469     char *start;
2470     char *freeme = 0;
2471
2472     scan->connection = c;
2473     scan->odr = odr_createmem (ODR_DECODE);
2474     scan->options = ZOOM_options_create_with_parent (c->options);
2475     scan->refcount = 1;
2476     scan->scan_response = 0;
2477
2478     /*
2479      * We need to check the query-type, so we can recognise CQL and
2480      * compile it into a form that we can use here.  The ZOOM_query
2481      * structure has no explicit `type' member, but inspection of the
2482      * ZOOM_query_prefix() and ZOOM_query_cql() functions shows how
2483      * the structure is set up in each case.
2484      */
2485
2486     if (q->z_query->which == Z_Query_type_1) {
2487         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2488                 c, q, q->query_string);
2489         start = q->query_string;
2490     } else if (q->z_query->which == Z_Query_type_104) {
2491         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2492                 c, q, q->query_string);
2493         start = freeme = cql2pqf(c, q->query_string);
2494         if (start == 0)
2495             return 0;
2496     } else {
2497         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2498                 c, q, q->query_string);
2499         abort();
2500     }
2501
2502     scan->termListAndStartPoint =
2503         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2504     xfree (freeme);
2505     if (scan->termListAndStartPoint != 0)
2506     {
2507         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2508         task->u.scan.scan = scan;
2509
2510         (scan->refcount)++;
2511         if (!c->async)
2512         {
2513             while (ZOOM_event (1, &c))
2514                 ;
2515         }
2516     }
2517     return scan;
2518 }
2519
2520 ZOOM_API(void)
2521 ZOOM_scanset_destroy (ZOOM_scanset scan)
2522 {
2523     if (!scan)
2524         return;
2525     (scan->refcount)--;
2526     if (scan->refcount == 0)
2527     {
2528         odr_destroy (scan->odr);
2529
2530         ZOOM_options_destroy (scan->options);
2531         xfree (scan);
2532     }
2533 }
2534
2535 static zoom_ret send_package (ZOOM_connection c)
2536 {
2537     ZOOM_Event event;
2538
2539     yaz_log(log_details, "%p send_package", c);
2540     if (!c->tasks)
2541         return zoom_complete;
2542     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2543
2544     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2545     ZOOM_connection_put_event (c, event);
2546
2547     return do_write_ex (c, c->tasks->u.package->buf_out,
2548                         c->tasks->u.package->len_out);
2549 }
2550
2551 static zoom_ret send_scan (ZOOM_connection c)
2552 {
2553     ZOOM_scanset scan;
2554     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2555     Z_ScanRequest *req = apdu->u.scanRequest;
2556
2557     yaz_log(log_details, "%p send_scan", c);
2558     if (!c->tasks)
2559         return zoom_complete;
2560     assert (c->tasks->which == ZOOM_TASK_SCAN);
2561     scan = c->tasks->u.scan.scan;
2562
2563     req->termListAndStartPoint = scan->termListAndStartPoint;
2564     req->attributeSet = scan->attributeSet;
2565
2566     *req->numberOfTermsRequested =
2567         ZOOM_options_get_int(scan->options, "number", 10);
2568
2569     req->preferredPositionInResponse =
2570         odr_intdup (c->odr_out,
2571                     ZOOM_options_get_int(scan->options, "position", 1));
2572
2573     req->stepSize =
2574         odr_intdup (c->odr_out,
2575                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2576
2577     req->databaseNames = set_DatabaseNames (c, scan->options,
2578                                             &req->num_databaseNames);
2579
2580     return send_APDU (c, apdu);
2581 }
2582
2583 ZOOM_API(size_t)
2584 ZOOM_scanset_size (ZOOM_scanset scan)
2585 {
2586     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2587         return 0;
2588     return scan->scan_response->entries->num_entries;
2589 }
2590
2591 ZOOM_API(const char *)
2592 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2593                    int *occ, int *len)
2594 {
2595     const char *term = 0;
2596     size_t noent = ZOOM_scanset_size (scan);
2597     Z_ScanResponse *res = scan->scan_response;
2598
2599     *len = 0;
2600     *occ = 0;
2601     if (pos >= noent)
2602         return 0;
2603     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2604     {
2605         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2606
2607         if (t->term->which == Z_Term_general)
2608         {
2609             term = (const char *) t->term->u.general->buf;
2610             *len = t->term->u.general->len;
2611         }
2612         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2613     }
2614     return term;
2615 }
2616
2617 ZOOM_API(const char *)
2618 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2619                            int *occ, int *len)
2620 {
2621     const char *term = 0;
2622     size_t noent = ZOOM_scanset_size (scan);
2623     Z_ScanResponse *res = scan->scan_response;
2624
2625     *len = 0;
2626     *occ = 0;
2627     if (pos >= noent)
2628         return 0;
2629     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2630     {
2631         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2632
2633         if (t->displayTerm)
2634         {
2635             term = t->displayTerm;
2636             *len = strlen(term);
2637         }
2638         else if (t->term->which == Z_Term_general)
2639         {
2640             term = (const char *) t->term->u.general->buf;
2641             *len = t->term->u.general->len;
2642         }
2643         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2644     }
2645     return term;
2646 }
2647
2648 ZOOM_API(const char *)
2649 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2650 {
2651     return ZOOM_options_get (scan->options, key);
2652 }
2653
2654 ZOOM_API(void)
2655 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2656                               const char *val)
2657 {
2658     ZOOM_options_set (scan->options, key, val);
2659 }
2660
2661 static Z_APDU *create_es_package (ZOOM_package p, int type)
2662 {
2663     const char *str;
2664     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2665     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2666
2667     *req->function = Z_ExtendedServicesRequest_create;
2668
2669     str = ZOOM_options_get(p->options, "package-name");
2670     if (str && *str)
2671         req->packageName = nmem_strdup (p->odr_out->mem, str);
2672
2673     str = ZOOM_options_get(p->options, "user-id");
2674     if (str)
2675         req->userId = nmem_strdup (p->odr_out->mem, str);
2676
2677     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2678                                               type);
2679
2680     str = ZOOM_options_get(p->options, "function");
2681     if (str)
2682     {
2683         if (!strcmp (str, "create"))
2684             *req->function = 1;
2685         if (!strcmp (str, "delete"))
2686             *req->function = 2;
2687         if (!strcmp (str, "modify"))
2688             *req->function = 3;
2689     }
2690     return apdu;
2691 }
2692
2693 static const char *ill_array_lookup (void *clientData, const char *idx)
2694 {
2695     ZOOM_package p = (ZOOM_package) clientData;
2696     return ZOOM_options_get (p->options, idx+4);
2697 }
2698
2699 static Z_External *encode_ill_request (ZOOM_package p)
2700 {
2701     ODR out = p->odr_out;
2702     ILL_Request *req;
2703     Z_External *r = 0;
2704     struct ill_get_ctl ctl;
2705
2706     ctl.odr = p->odr_out;
2707     ctl.clientData = p;
2708     ctl.f = ill_array_lookup;
2709
2710     req = ill_get_ILLRequest(&ctl, "ill", 0);
2711
2712     if (!ill_Request (out, &req, 0, 0))
2713     {
2714         int ill_request_size;
2715         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2716         if (ill_request_buf)
2717             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2718         return 0;
2719     }
2720     else
2721     {
2722         oident oid;
2723         int illRequest_size = 0;
2724         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2725
2726         oid.proto = PROTO_GENERAL;
2727         oid.oclass = CLASS_GENERAL;
2728         oid.value = VAL_ISO_ILL_1;
2729
2730         r = (Z_External *) odr_malloc (out, sizeof(*r));
2731         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2732         r->indirect_reference = 0;
2733         r->descriptor = 0;
2734         r->which = Z_External_single;
2735
2736         r->u.single_ASN1_type =
2737             odr_create_Odr_oct(out,
2738                                (unsigned char *)illRequest_buf,
2739                                illRequest_size);
2740     }
2741     return r;
2742 }
2743
2744 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2745 {
2746     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2747     const char *str;
2748
2749     req->which = Z_IOItemOrder_esRequest;
2750     req->u.esRequest = (Z_IORequest *)
2751         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2752
2753     /* to keep part ... */
2754     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2755         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2756     req->u.esRequest->toKeep->supplDescription = 0;
2757     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2758         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2759
2760     str = ZOOM_options_get(p->options, "contact-name");
2761     req->u.esRequest->toKeep->contact->name = str ?
2762         nmem_strdup (p->odr_out->mem, str) : 0;
2763
2764     str = ZOOM_options_get(p->options, "contact-phone");
2765     req->u.esRequest->toKeep->contact->phone = str ?
2766         nmem_strdup (p->odr_out->mem, str) : 0;
2767
2768     str = ZOOM_options_get(p->options, "contact-email");
2769     req->u.esRequest->toKeep->contact->email = str ?
2770         nmem_strdup (p->odr_out->mem, str) : 0;
2771
2772     req->u.esRequest->toKeep->addlBilling = 0;
2773
2774     /* not to keep part ... */
2775     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2776         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2777
2778     str = ZOOM_options_get(p->options, "itemorder-setname");
2779     if (!str)
2780         str = "default";
2781
2782     if (!*str)
2783         req->u.esRequest->notToKeep->resultSetItem = 0;
2784     else
2785     {
2786         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2787            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2788
2789         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2790            nmem_strdup (p->odr_out->mem, str);
2791         req->u.esRequest->notToKeep->resultSetItem->item =
2792             (int *) odr_malloc(p->odr_out, sizeof(int));
2793
2794         str = ZOOM_options_get(p->options, "itemorder-item");
2795         *req->u.esRequest->notToKeep->resultSetItem->item =
2796             (str ? atoi(str) : 1);
2797     }
2798     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2799
2800     return req;
2801 }
2802
2803 Z_APDU *create_admin_package(ZOOM_package p, int type,
2804                              Z_ESAdminOriginPartToKeep **toKeepP,
2805                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2806 {
2807     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2808     if (apdu)
2809     {
2810         Z_ESAdminOriginPartToKeep  *toKeep;
2811         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2812         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2813         const char *first_db = "Default";
2814         int num_db;
2815         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2816         if (num_db > 0)
2817             first_db = db[0];
2818
2819         r->direct_reference =
2820             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2821                                    VAL_ADMINSERVICE);
2822         r->descriptor = 0;
2823         r->indirect_reference = 0;
2824         r->which = Z_External_ESAdmin;
2825
2826         r->u.adminService = (Z_Admin *)
2827             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2828         r->u.adminService->which = Z_Admin_esRequest;
2829         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2830             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2831
2832         toKeep = r->u.adminService->u.esRequest->toKeep =
2833             (Z_ESAdminOriginPartToKeep *)
2834             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2835         toKeep->which = type;
2836         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2837         toKeep->u.create = odr_nullval();
2838         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2839
2840         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2841             (Z_ESAdminOriginPartNotToKeep *)
2842             odr_malloc(p->odr_out,
2843                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2844         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2845         notToKeep->u.recordsWillFollow = odr_nullval();
2846         if (toKeepP)
2847             *toKeepP = toKeep;
2848         if (notToKeepP)
2849             *notToKeepP = notToKeep;
2850     }
2851     return apdu;
2852 }
2853
2854 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2855 {
2856     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2857     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2858     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2859     const char *doc = ZOOM_options_get(p->options, "doc");
2860
2861     if (!doc)
2862         doc = "";
2863
2864     req->taskSpecificParameters = ext;
2865     ext->direct_reference = req->packageType;
2866     ext->descriptor = 0;
2867     ext->indirect_reference = 0;
2868
2869     ext->which = Z_External_octet;
2870     ext->u.single_ASN1_type =
2871         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
2872                            strlen(doc));
2873     return apdu;
2874 }
2875
2876 static Z_APDU *create_update_package(ZOOM_package p)
2877 {
2878     Z_APDU *apdu = 0;
2879     const char *first_db = "Default";
2880     int num_db;
2881     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2882     const char *action = ZOOM_options_get(p->options, "action");
2883     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2884     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2885     const char *record_buf = ZOOM_options_get(p->options, "record");
2886     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2887     int syntax_oid = VAL_NONE;
2888     int action_no = -1;
2889
2890     if (syntax_str)
2891         syntax_oid = oid_getvalbyname(syntax_str);
2892     if (!record_buf)
2893     {
2894         record_buf = "void";
2895         syntax_oid = VAL_SUTRS;
2896     }
2897     if (syntax_oid == VAL_NONE)
2898         syntax_oid = VAL_TEXT_XML;
2899
2900     if (num_db > 0)
2901         first_db = db[0];
2902
2903     if (!action)
2904         action = "specialUpdate";
2905
2906     if (!strcmp(action, "recordInsert"))
2907         action_no = Z_IUOriginPartToKeep_recordInsert;
2908     else if (!strcmp(action, "recordReplace"))
2909         action_no = Z_IUOriginPartToKeep_recordReplace;
2910     else if (!strcmp(action, "recordDelete"))
2911         action_no = Z_IUOriginPartToKeep_recordDelete;
2912     else if (!strcmp(action, "elementUpdate"))
2913         action_no = Z_IUOriginPartToKeep_elementUpdate;
2914     else if (!strcmp(action, "specialUpdate"))
2915         action_no = Z_IUOriginPartToKeep_specialUpdate;
2916     else
2917         return 0;
2918
2919     apdu = create_es_package (p, VAL_DBUPDATE);
2920     if (apdu)
2921     {
2922         Z_IUOriginPartToKeep *toKeep;
2923         Z_IUSuppliedRecords *notToKeep;
2924         Z_External *r = (Z_External *)
2925             odr_malloc (p->odr_out, sizeof(*r));
2926
2927         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2928
2929         r->direct_reference =
2930             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2931                                    VAL_DBUPDATE);
2932         r->descriptor = 0;
2933         r->which = Z_External_update;
2934         r->indirect_reference = 0;
2935         r->u.update = (Z_IUUpdate *)
2936             odr_malloc(p->odr_out, sizeof(*r->u.update));
2937
2938         r->u.update->which = Z_IUUpdate_esRequest;
2939         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2940             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2941         toKeep = r->u.update->u.esRequest->toKeep =
2942             (Z_IUOriginPartToKeep *)
2943             odr_malloc(p->odr_out, sizeof(*toKeep));
2944
2945         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2946         toKeep->schema = 0;
2947         toKeep->elementSetName = 0;
2948         toKeep->actionQualifier = 0;
2949         toKeep->action = odr_intdup(p->odr_out, action_no);
2950
2951         notToKeep = r->u.update->u.esRequest->notToKeep =
2952             (Z_IUSuppliedRecords *)
2953             odr_malloc(p->odr_out, sizeof(*notToKeep));
2954         notToKeep->num = 1;
2955         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2956             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2957         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2958             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2959         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2960         if (recordIdOpaque)
2961         {
2962             notToKeep->elements[0]->u.opaque =
2963                 odr_create_Odr_oct(p->odr_out,
2964                                    (const unsigned char *) recordIdOpaque,
2965                                    strlen(recordIdOpaque));
2966         }
2967         else if (recordIdNumber)
2968         {
2969             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2970
2971             notToKeep->elements[0]->u.number =
2972                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2973         }
2974         else
2975             notToKeep->elements[0]->u.opaque = 0;
2976         notToKeep->elements[0]->supplementalId = 0;
2977         notToKeep->elements[0]->correlationInfo = 0;
2978         notToKeep->elements[0]->record =
2979             z_ext_record(p->odr_out, syntax_oid,
2980                          record_buf, strlen(record_buf));
2981     }
2982     if (0 && apdu)
2983     {
2984        ODR print = odr_createmem(ODR_PRINT);
2985
2986        z_APDU(print, &apdu, 0, 0);
2987        odr_destroy(print);
2988     }
2989     return apdu;
2990 }
2991
2992 ZOOM_API(void)
2993     ZOOM_package_send (ZOOM_package p, const char *type)
2994 {
2995     Z_APDU *apdu = 0;
2996     ZOOM_connection c;
2997     if (!p)
2998         return;
2999     c = p->connection;
3000     odr_reset (p->odr_out);
3001     xfree (p->buf_out);
3002     p->buf_out = 0;
3003     if (!strcmp(type, "itemorder"))
3004     {
3005         apdu = create_es_package (p, VAL_ITEMORDER);
3006         if (apdu)
3007         {
3008             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
3009
3010             r->direct_reference =
3011                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3012                                        VAL_ITEMORDER);
3013             r->descriptor = 0;
3014             r->which = Z_External_itemOrder;
3015             r->indirect_reference = 0;
3016             r->u.itemOrder = encode_item_order (p);
3017
3018             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3019         }
3020     }
3021     else if (!strcmp(type, "create"))  /* create database */
3022     {
3023         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3024                                     0, 0);
3025     }
3026     else if (!strcmp(type, "drop"))  /* drop database */
3027     {
3028         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3029                                     0, 0);
3030     }
3031     else if (!strcmp(type, "commit"))  /* commit changes */
3032     {
3033         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3034                                     0, 0);
3035     }
3036     else if (!strcmp(type, "update")) /* update record(s) */
3037     {
3038         apdu = create_update_package(p);
3039     }
3040     else if (!strcmp(type, "xmlupdate"))
3041     {
3042         apdu = create_xmlupdate_package(p);
3043     }
3044     if (apdu)
3045     {
3046         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3047         {
3048             char *buf;
3049
3050             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
3051             task->u.package = p;
3052             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3053             p->buf_out = (char *) xmalloc (p->len_out);
3054             memcpy (p->buf_out, buf, p->len_out);
3055
3056             (p->refcount)++;
3057             if (!c->async)
3058             {
3059                 while (ZOOM_event (1, &c))
3060                     ;
3061             }
3062         }
3063     }
3064 }
3065
3066 ZOOM_API(ZOOM_package)
3067     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
3068 {
3069     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
3070
3071     p->connection = c;
3072     p->odr_out = odr_createmem (ODR_ENCODE);
3073     p->options = ZOOM_options_create_with_parent2 (options, c->options);
3074     p->refcount = 1;
3075     p->buf_out = 0;
3076     p->len_out = 0;
3077     return p;
3078 }
3079
3080 ZOOM_API(void)
3081     ZOOM_package_destroy(ZOOM_package p)
3082 {
3083     if (!p)
3084         return;
3085     (p->refcount)--;
3086     if (p->refcount == 0)
3087     {
3088         odr_destroy (p->odr_out);
3089         xfree (p->buf_out);
3090
3091         ZOOM_options_destroy (p->options);
3092         xfree (p);
3093     }
3094 }
3095
3096 ZOOM_API(const char *)
3097 ZOOM_package_option_get (ZOOM_package p, const char *key)
3098 {
3099     return ZOOM_options_get (p->options, key);
3100 }
3101
3102
3103 ZOOM_API(void)
3104 ZOOM_package_option_set (ZOOM_package p, const char *key,
3105                               const char *val)
3106 {
3107     ZOOM_options_set (p->options, key, val);
3108 }
3109
3110 static int ZOOM_connection_exec_task (ZOOM_connection c)
3111 {
3112     ZOOM_task task = c->tasks;
3113     zoom_ret ret = zoom_complete;
3114
3115     if (!task)
3116         return 0;
3117     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3118              c, task->which, task->running);
3119     if (c->error != ZOOM_ERROR_NONE)
3120     {
3121         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3122                 "removing tasks because of error = %d", c, c->error);
3123         ZOOM_connection_remove_tasks (c);
3124         return 0;
3125     }
3126     if (task->running)
3127     {
3128         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3129                  "task already running", c);
3130         return 0;
3131     }
3132     task->running = 1;
3133     ret = zoom_complete;
3134     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3135     {
3136         switch (task->which)
3137         {
3138         case ZOOM_TASK_SEARCH:
3139             if (c->proto == PROTO_HTTP)
3140                 ret = ZOOM_connection_srw_send_search(c);
3141             else
3142                 ret = ZOOM_connection_send_search(c);
3143             break;
3144         case ZOOM_TASK_RETRIEVE:
3145             if (c->proto == PROTO_HTTP)
3146                 ret = ZOOM_connection_srw_send_search(c);
3147             else
3148                 ret = send_present (c);
3149             break;
3150         case ZOOM_TASK_CONNECT:
3151             ret = do_connect(c);
3152             break;
3153         case ZOOM_TASK_SCAN:
3154             ret = send_scan(c);
3155             break;
3156         case ZOOM_TASK_PACKAGE:
3157             ret = send_package(c);
3158             break;
3159         case ZOOM_TASK_SORT:
3160             c->tasks->u.sort.resultset->r_sort_spec =
3161                 c->tasks->u.sort.q->sort_spec;
3162             ret = send_sort(c, c->tasks->u.sort.resultset);
3163             break;
3164         }
3165     }
3166     else
3167     {
3168         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3169                 "remove tasks because no connection exist", c);
3170         ZOOM_connection_remove_tasks (c);
3171     }
3172     if (ret == zoom_complete)
3173     {
3174         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3175                  "task removed (complete)", c);
3176         ZOOM_connection_remove_task (c);
3177         return 0;
3178     }
3179     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3180             "task pending", c);
3181     return 1;
3182 }
3183
3184 static zoom_ret send_sort_present (ZOOM_connection c)
3185 {
3186     zoom_ret r = zoom_complete;
3187
3188     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3189         r = send_sort (c, c->tasks->u.search.resultset);
3190     if (r == zoom_complete)
3191         r = send_present (c);
3192     return r;
3193 }
3194
3195 static int es_response (ZOOM_connection c,
3196                         Z_ExtendedServicesResponse *res)
3197 {
3198     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3199         return 0;
3200     if (res->diagnostics && res->num_diagnostics > 0)
3201         response_diag(c, res->diagnostics[0]);
3202     if (res->taskPackage &&
3203         res->taskPackage->which == Z_External_extendedService)
3204     {
3205         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3206         Odr_oct *id = taskPackage->targetReference;
3207
3208         if (id)
3209             ZOOM_options_setl (c->tasks->u.package->options,
3210                                "targetReference", (char*) id->buf, id->len);
3211     }
3212     if (res->taskPackage &&
3213         res->taskPackage->which == Z_External_octet)
3214     {
3215         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3216         ZOOM_options_setl (c->tasks->u.package->options,
3217                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
3218     }
3219     return 1;
3220 }
3221
3222 static void interpret_init_diag(ZOOM_connection c,
3223                                 Z_DiagnosticFormat *diag)
3224 {
3225     if (diag->num > 0)
3226     {
3227         Z_DiagnosticFormat_s *ds = diag->elements[0];
3228         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3229             response_default_diag(c, ds->u.defaultDiagRec);
3230     }
3231 }
3232
3233
3234 static void interpret_otherinformation_field(ZOOM_connection c,
3235                                              Z_OtherInformation *ui)
3236 {
3237     int i;
3238     for (i = 0; i < ui->num_elements; i++)
3239     {
3240         Z_OtherInformationUnit *unit = ui->list[i];
3241         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3242             unit->information.externallyDefinedInfo &&
3243             unit->information.externallyDefinedInfo->which ==
3244             Z_External_diag1)
3245         {
3246             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3247         }
3248     }
3249 }
3250
3251 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3252 {
3253     Z_InitResponse *initrs;
3254
3255     c->mask = 0;
3256     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3257     switch(apdu->which)
3258     {
3259     case Z_APDU_initResponse:
3260         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3261         initrs = apdu->u.initResponse;
3262         ZOOM_connection_option_set(c, "serverImplementationId",
3263                                    initrs->implementationId ?
3264                                    initrs->implementationId : "");
3265         ZOOM_connection_option_set(c, "serverImplementationName",
3266                                    initrs->implementationName ?
3267                                    initrs->implementationName : "");
3268         ZOOM_connection_option_set(c, "serverImplementationVersion",
3269                                    initrs->implementationVersion ?
3270                                    initrs->implementationVersion : "");
3271         /* Set the three old options too, for old applications */
3272         ZOOM_connection_option_set(c, "targetImplementationId",
3273                                    initrs->implementationId ?
3274                                    initrs->implementationId : "");
3275         ZOOM_connection_option_set(c, "targetImplementationName",
3276                                    initrs->implementationName ?
3277                                    initrs->implementationName : "");
3278         ZOOM_connection_option_set(c, "targetImplementationVersion",
3279                                    initrs->implementationVersion ?
3280                                    initrs->implementationVersion : "");
3281         if (!*initrs->result)
3282         {
3283             Z_External *uif = initrs->userInformationField;
3284
3285             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3286
3287             if (uif && uif->which == Z_External_userInfo1)
3288                 interpret_otherinformation_field(c, uif->u.userInfo1);
3289         }
3290         else
3291         {
3292             char *cookie =
3293                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3294                                           VAL_COOKIE, 1, 0);
3295             xfree (c->cookie_in);
3296             c->cookie_in = 0;
3297             if (cookie)
3298                 c->cookie_in = xstrdup(cookie);
3299             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3300                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3301                 c->support_named_resultsets = 1;
3302             if (c->tasks)
3303             {
3304                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3305                 ZOOM_connection_remove_task (c);
3306             }
3307             ZOOM_connection_exec_task (c);
3308         }
3309         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3310         {
3311             NMEM tmpmem = nmem_create();
3312             Z_CharSetandLanguageNegotiation *p =
3313                 yaz_get_charneg_record(initrs->otherInfo);
3314
3315             if (p)
3316             {
3317                 char *charset = NULL, *lang = NULL;
3318                 int sel;
3319
3320                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3321                 yaz_log(log_details, "%p recv_apdu target accepted: "
3322                         "charset %s, language %s, select %d",
3323                         c,
3324                         charset ? charset : "none", lang ? lang : "none", sel);
3325                 if (charset)
3326                     ZOOM_connection_option_set (c, "negotiation-charset",
3327                                                 charset);
3328                 if (lang)
3329                     ZOOM_connection_option_set (c, "negotiation-lang",
3330                                                 lang);
3331
3332                 ZOOM_connection_option_set (
3333                     c,  "negotiation-charset-in-effect-for-records",
3334                     (sel != 0) ? "1" : "0");
3335                 nmem_destroy(tmpmem);
3336             }
3337         }
3338         break;
3339     case Z_APDU_searchResponse:
3340         yaz_log(log_api, "%p recv_apdu Search response", c);
3341         handle_search_response (c, apdu->u.searchResponse);
3342         if (send_sort_present (c) == zoom_complete)
3343             ZOOM_connection_remove_task (c);
3344         break;
3345     case Z_APDU_presentResponse:
3346         yaz_log(log_api, "%p recv_apdu Present response", c);
3347         handle_present_response (c, apdu->u.presentResponse);
3348         if (send_present (c) == zoom_complete)
3349             ZOOM_connection_remove_task (c);
3350         break;
3351     case Z_APDU_sortResponse:
3352         yaz_log(log_api, "%p recv_apdu Sort response", c);
3353         sort_response (c, apdu->u.sortResponse);
3354         if (send_present (c) == zoom_complete)
3355             ZOOM_connection_remove_task (c);
3356         break;
3357     case Z_APDU_scanResponse:
3358         yaz_log(log_api, "%p recv_apdu Scan response", c);
3359         scan_response (c, apdu->u.scanResponse);
3360         ZOOM_connection_remove_task (c);
3361         break;
3362     case Z_APDU_extendedServicesResponse:
3363         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3364         es_response (c, apdu->u.extendedServicesResponse);
3365         ZOOM_connection_remove_task (c);
3366         break;
3367     case Z_APDU_close:
3368         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3369         if (c->reconnect_ok)
3370         {
3371             do_close(c);
3372             c->tasks->running = 0;
3373             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3374         }
3375         else
3376         {
3377             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3378             do_close(c);
3379         }
3380         break;
3381     default:
3382         yaz_log(log_api, "%p Received unknown PDU", c);
3383         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3384         do_close(c);
3385     }
3386 }
3387
3388 #if HAVE_XML2
3389 static void handle_srw_response(ZOOM_connection c,
3390                                 Z_SRW_searchRetrieveResponse *res)
3391 {
3392     ZOOM_resultset resultset = 0;
3393     int i;
3394     NMEM nmem;
3395     ZOOM_Event event;
3396
3397     if (!c->tasks)
3398         return;
3399
3400     if (c->tasks->which == ZOOM_TASK_SEARCH)
3401         resultset = c->tasks->u.search.resultset;
3402     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3403         resultset = c->tasks->u.retrieve.resultset;
3404     else
3405         return ;
3406
3407     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3408     ZOOM_connection_put_event(c, event);
3409
3410     resultset->size = 0;
3411
3412     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3413
3414     if (res->numberOfRecords)
3415         resultset->size = *res->numberOfRecords;
3416
3417     for (i = 0; i<res->num_records; i++)
3418     {
3419         int pos;
3420
3421         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3422             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3423
3424         if (res->records[i].recordPosition &&
3425             *res->records[i].recordPosition > 0)
3426             pos = *res->records[i].recordPosition - 1;
3427         else
3428             pos = resultset->start + i;
3429
3430         npr->databaseName = 0;
3431         npr->which = Z_NamePlusRecord_databaseRecord;
3432         npr->u.databaseRecord = (Z_External *)
3433             odr_malloc(c->odr_in, sizeof(Z_External));
3434         npr->u.databaseRecord->descriptor = 0;
3435         npr->u.databaseRecord->direct_reference =
3436             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3437         npr->u.databaseRecord->which = Z_External_octet;
3438
3439         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3440             odr_malloc(c->odr_in, sizeof(Odr_oct));
3441         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3442             res->records[i].recordData_buf;
3443         npr->u.databaseRecord->u.octet_aligned->len =
3444             npr->u.databaseRecord->u.octet_aligned->size =
3445             res->records[i].recordData_len;
3446         record_cache_add (resultset, npr, pos);
3447     }
3448     if (res->num_diagnostics > 0)
3449     {
3450         const char *uri = res->diagnostics[0].uri;
3451         if (uri)
3452         {
3453             int code = 0;
3454             const char *cp;
3455             if ((cp = strrchr(uri, '/')))
3456                 code = atoi(cp+1);
3457             set_dset_error(c, code, uri,
3458                            res->diagnostics[0].details, 0);
3459         }
3460     }
3461     nmem = odr_extract_mem(c->odr_in);
3462     nmem_transfer(resultset->odr->mem, nmem);
3463     nmem_destroy(nmem);
3464 }
3465 #endif
3466
3467 #if HAVE_XML2
3468 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3469 {
3470     int ret = -1;
3471     const char *content_type = z_HTTP_header_lookup(hres->headers,
3472                                                     "Content-Type");
3473     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3474                                                        "Connection");
3475     c->mask = 0;
3476     yaz_log(log_details, "%p handle_http", c);
3477
3478     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3479     {
3480         Z_SOAP *soap_package = 0;
3481         ODR o = c->odr_in;
3482         Z_SOAP_Handler soap_handlers[2] = {
3483             {"http://www.loc.gov/zing/srw/", 0,
3484              (Z_SOAP_fun) yaz_srw_codec},
3485             {0, 0, 0}
3486         };
3487         ret = z_soap_codec(o, &soap_package,
3488                            &hres->content_buf, &hres->content_len,
3489                            soap_handlers);
3490         if (!ret && soap_package->which == Z_SOAP_generic &&
3491             soap_package->u.generic->no == 0)
3492         {
3493             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3494             if (sr->which == Z_SRW_searchRetrieve_response)
3495                 handle_srw_response(c, sr->u.response);
3496             else
3497                 ret = -1;
3498         }
3499         else if (!ret && (soap_package->which == Z_SOAP_fault
3500                           || soap_package->which == Z_SOAP_error))
3501         {
3502             set_HTTP_error(c, hres->code,
3503                            soap_package->u.fault->fault_code,
3504                            soap_package->u.fault->fault_string);
3505         }
3506         else
3507             ret = -1;
3508     }
3509     if (ret)
3510     {
3511         if (hres->code != 200)
3512             set_HTTP_error(c, hres->code, 0, 0);
3513         else
3514             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3515         do_close (c);
3516     }
3517     ZOOM_connection_remove_task(c);
3518     if (!strcmp(hres->version, "1.0"))
3519     {
3520         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3521         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3522             do_close(c);
3523     }
3524     else
3525     {
3526         /* HTTP 1.1: only if no close we stay alive .. */
3527         if (connection_head && !strcmp(connection_head, "close"))
3528             do_close(c);
3529     }
3530 }
3531 #endif
3532
3533 static int do_read (ZOOM_connection c)
3534 {
3535     int r, more;
3536     ZOOM_Event event;
3537
3538     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3539     ZOOM_connection_put_event (c, event);
3540
3541     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3542     more = cs_more(c->cs);
3543     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3544     if (r == 1)
3545         return 0;
3546     if (r <= 0)
3547     {
3548         if (c->reconnect_ok)
3549         {
3550             do_close (c);
3551             c->reconnect_ok = 0;
3552             yaz_log(log_details, "%p do_read reconnect read", c);
3553             c->tasks->running = 0;
3554             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3555         }
3556         else
3557         {
3558             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3559             do_close (c);
3560         }
3561     }
3562     else
3563     {
3564         Z_GDU *gdu;
3565         ZOOM_Event event;
3566
3567         odr_reset (c->odr_in);
3568         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3569         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3570         ZOOM_connection_put_event (c, event);
3571
3572         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3573         {
3574             int x;
3575             int err = odr_geterrorx(c->odr_in, &x);
3576             char msg[60];
3577             const char *element = odr_getelement(c->odr_in);
3578             sprintf (msg, "ODR code %d:%d element=%-20s",
3579                      err, x, element ? element : "<unknown>");
3580             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3581             do_close (c);
3582         }
3583         else if (gdu->which == Z_GDU_Z3950)
3584             recv_apdu (c, gdu->u.z3950);
3585         else if (gdu->which == Z_GDU_HTTP_Response)
3586         {
3587 #if HAVE_XML2
3588             handle_http (c, gdu->u.HTTP_Response);
3589 #else
3590             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3591             do_close (c);
3592 #endif
3593         }
3594         c->reconnect_ok = 0;
3595     }
3596     return 1;
3597 }
3598
3599 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3600 {
3601     int r;
3602     ZOOM_Event event;
3603
3604     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3605     ZOOM_connection_put_event (c, event);
3606
3607     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3608     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3609     {
3610         yaz_log(log_details, "%p do_write_ex write failed", c);
3611         if (c->reconnect_ok)
3612         {
3613             do_close (c);
3614             c->reconnect_ok = 0;
3615             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3616             c->tasks->running = 0;
3617             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3618             return zoom_pending;
3619         }
3620         if (c->state == STATE_CONNECTING)
3621             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3622         else
3623             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3624         do_close (c);
3625         return zoom_complete;
3626     }
3627     else if (r == 1)
3628     {
3629         c->mask = ZOOM_SELECT_EXCEPT;
3630         if (c->cs->io_pending & CS_WANT_WRITE)
3631             c->mask += ZOOM_SELECT_WRITE;
3632         if (c->cs->io_pending & CS_WANT_READ)
3633             c->mask += ZOOM_SELECT_READ;
3634         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3635                 c, c->mask);
3636     }
3637     else
3638     {
3639         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3640         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3641                 c, c->mask);
3642     }
3643     return zoom_pending;
3644 }
3645
3646 static zoom_ret do_write(ZOOM_connection c)
3647 {
3648     return do_write_ex (c, c->buf_out, c->len_out);
3649 }
3650
3651
3652 ZOOM_API(const char *)
3653 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3654 {
3655     return ZOOM_options_get (c->options, key);
3656 }
3657
3658 ZOOM_API(const char *)
3659 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp)
3660 {
3661     return ZOOM_options_getl (c->options, key, lenp);
3662 }
3663
3664 ZOOM_API(void)
3665 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3666                             const char *val)
3667 {
3668     ZOOM_options_set (c->options, key, val);
3669 }
3670
3671 ZOOM_API(void)
3672 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3673                              const char *val, int len)
3674 {
3675     ZOOM_options_setl (c->options, key, val, len);
3676 }
3677
3678 ZOOM_API(const char *)
3679 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3680 {
3681     return ZOOM_options_get (r->options, key);
3682 }
3683
3684 ZOOM_API(void)
3685 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3686                                   const char *val)
3687 {
3688     ZOOM_options_set (r->options, key, val);
3689 }
3690
3691
3692 ZOOM_API(int)
3693 ZOOM_connection_errcode (ZOOM_connection c)
3694 {
3695     return ZOOM_connection_error (c, 0, 0);
3696 }
3697
3698 ZOOM_API(const char *)
3699 ZOOM_connection_errmsg (ZOOM_connection c)
3700 {
3701     const char *msg;
3702     ZOOM_connection_error (c, &msg, 0);
3703     return msg;
3704 }
3705
3706 ZOOM_API(const char *)
3707 ZOOM_connection_addinfo (ZOOM_connection c)
3708 {
3709     const char *addinfo;
3710     ZOOM_connection_error (c, 0, &addinfo);
3711     return addinfo;
3712 }
3713
3714 ZOOM_API(const char *)
3715 ZOOM_connection_diagset (ZOOM_connection c)
3716 {
3717     const char *diagset;
3718     ZOOM_connection_error_x (c, 0, 0, &diagset);
3719     return diagset;
3720 }
3721
3722 ZOOM_API(const char *)
3723 ZOOM_diag_str (int error)
3724 {
3725     switch (error)
3726     {
3727     case ZOOM_ERROR_NONE:
3728         return "No error";
3729     case ZOOM_ERROR_CONNECT:
3730         return "Connect failed";
3731     case ZOOM_ERROR_MEMORY:
3732         return "Out of memory";
3733     case ZOOM_ERROR_ENCODE:
3734         return "Encoding failed";
3735     case ZOOM_ERROR_DECODE:
3736         return "Decoding failed";
3737     case ZOOM_ERROR_CONNECTION_LOST:
3738         return "Connection lost";
3739     case ZOOM_ERROR_INIT:
3740         return "Init rejected";
3741     case ZOOM_ERROR_INTERNAL:
3742         return "Internal failure";
3743     case ZOOM_ERROR_TIMEOUT:
3744         return "Timeout";
3745     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3746         return "Unsupported protocol";
3747     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3748         return "Unsupported query type";
3749     case ZOOM_ERROR_INVALID_QUERY:
3750         return "Invalid query";
3751     case ZOOM_ERROR_CQL_PARSE:
3752         return "CQL parsing error";
3753     case ZOOM_ERROR_CQL_TRANSFORM:
3754         return "CQL transformation error";
3755     default:
3756         return diagbib1_str (error);
3757     }
3758 }
3759
3760 ZOOM_API(int)
3761 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3762                          const char **addinfo, const char **diagset)
3763 {
3764     int error = c->error;
3765     if (cp)
3766     {
3767         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3768             *cp = ZOOM_diag_str(error);
3769         else if (!strcmp(c->diagset, "HTTP"))
3770             *cp = z_HTTP_errmsg(c->error);
3771         else if (!strcmp(c->diagset, "Bib-1"))
3772             *cp = ZOOM_diag_str(error);
3773         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3774             *cp = yaz_diag_srw_str(c->error);
3775         else
3776             *cp = "Unknown error and diagnostic set";
3777     }
3778     if (addinfo)
3779         *addinfo = c->addinfo ? c->addinfo : "";
3780     if (diagset)
3781         *diagset = c->diagset ? c->diagset : "";
3782     return c->error;
3783 }
3784
3785 ZOOM_API(int)
3786 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3787                        const char **addinfo)
3788 {
3789     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3790 }
3791
3792 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3793 {
3794     ZOOM_Event event = 0;
3795     int r = cs_look(c->cs);
3796     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3797              c, mask, r);
3798
3799     if (r == CS_NONE)
3800     {
3801         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3802         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3803         do_close (c);
3804         ZOOM_connection_put_event (c, event);
3805     }
3806     else if (r == CS_CONNECT)
3807     {
3808         int ret;
3809         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3810
3811         ret = cs_rcvconnect (c->cs);
3812         yaz_log(log_details, "%p ZOOM_connection_do_io "
3813                 "cs_rcvconnect returned %d", c, ret);
3814         if (ret == 1)
3815         {
3816             c->mask = ZOOM_SELECT_EXCEPT;
3817             if (c->cs->io_pending & CS_WANT_WRITE)
3818                 c->mask += ZOOM_SELECT_WRITE;
3819             if (c->cs->io_pending & CS_WANT_READ)
3820                 c->mask += ZOOM_SELECT_READ;
3821             ZOOM_connection_put_event (c, event);
3822         }
3823         else if (ret == 0)
3824         {
3825             ZOOM_connection_put_event (c, event);
3826             get_cert(c);
3827             if (c->proto == PROTO_Z3950)
3828                 ZOOM_connection_send_init(c);
3829             else
3830             {
3831                 /* no init request for SRW .. */
3832                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3833                 ZOOM_connection_remove_task (c);
3834                 c->mask = 0;
3835                 ZOOM_connection_exec_task (c);
3836             }
3837             c->state = STATE_ESTABLISHED;
3838         }
3839         else
3840         {
3841             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3842             do_close (c);
3843             ZOOM_connection_put_event (c, event);
3844         }
3845     }
3846     else
3847     {
3848         if (mask & ZOOM_SELECT_READ)
3849             do_read (c);
3850         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3851             do_write (c);
3852     }
3853     return 1;
3854 }
3855
3856 ZOOM_API(int)
3857 ZOOM_connection_last_event(ZOOM_connection cs)
3858 {
3859     if (!cs)
3860         return ZOOM_EVENT_NONE;
3861     return cs->last_event;
3862 }
3863
3864 ZOOM_API(int)
3865 ZOOM_event (int no, ZOOM_connection *cs)
3866 {
3867     int timeout = 30;      /* default timeout in seconds */
3868     int timeout_set = 0;   /* whether it was overriden at all */
3869 #if HAVE_SYS_POLL_H
3870     struct pollfd pollfds[1024];
3871     ZOOM_connection poll_cs[1024];
3872 #else
3873     struct timeval tv;
3874     fd_set input, output, except;
3875 #endif
3876     int i, r, nfds;
3877     int max_fd = 0;
3878
3879     for (i = 0; i<no; i++)
3880     {
3881         ZOOM_connection c = cs[i];
3882         ZOOM_Event event;
3883         if (c && (event = ZOOM_connection_get_event(c)))
3884         {
3885             ZOOM_Event_destroy (event);
3886             return i+1;
3887         }
3888     }
3889     for (i = 0; i<no; i++)
3890     {
3891         ZOOM_connection c = cs[i];
3892         ZOOM_Event event;
3893         if (c && ZOOM_connection_exec_task (c))
3894         {
3895             if ((event = ZOOM_connection_get_event(c)))
3896             {
3897                 ZOOM_Event_destroy (event);
3898                 return i+1;
3899             }
3900         }
3901     }
3902 #if HAVE_SYS_POLL_H
3903
3904 #else
3905     FD_ZERO (&input);
3906     FD_ZERO (&output);
3907     FD_ZERO (&except);
3908 #endif
3909     nfds = 0;
3910     for (i = 0; i<no; i++)
3911     {
3912         ZOOM_connection c = cs[i];
3913         int fd, mask;
3914         int this_timeout;
3915
3916         if (!c)
3917             continue;
3918         fd = z3950_connection_socket(c);
3919         mask = z3950_connection_mask(c);
3920
3921         if (fd == -1)
3922             continue;
3923         if (max_fd < fd)
3924             max_fd = fd;
3925
3926         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3927         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3928         if (this_timeout != -2)
3929         {
3930             /* ensure the minimum timeout is used */
3931             if (!timeout_set)
3932                 timeout = this_timeout;
3933             else if (this_timeout != -1 && this_timeout < timeout)
3934                 timeout = this_timeout;
3935             timeout_set = 1;
3936         }
3937 #if HAVE_SYS_POLL_H
3938         if (mask)
3939         {
3940             short poll_events = 0;
3941
3942             if (mask & ZOOM_SELECT_READ)
3943                 poll_events += POLLIN;
3944             if (mask & ZOOM_SELECT_WRITE)
3945                 poll_events += POLLOUT;
3946             if (mask & ZOOM_SELECT_EXCEPT)
3947                 poll_events += POLLERR;
3948             pollfds[nfds].fd = fd;
3949             pollfds[nfds].events = poll_events;
3950             pollfds[nfds].revents = 0;
3951             poll_cs[nfds] = c;
3952             nfds++;
3953         }
3954 #else
3955         if (mask & ZOOM_SELECT_READ)
3956         {
3957             FD_SET (fd, &input);
3958             nfds++;
3959         }
3960         if (mask & ZOOM_SELECT_WRITE)
3961         {
3962             FD_SET (fd, &output);
3963             nfds++;
3964         }
3965         if (mask & ZOOM_SELECT_EXCEPT)
3966         {
3967             FD_SET (fd, &except);
3968             nfds++;
3969         }
3970 #endif
3971     }
3972     if (!nfds)
3973         return 0;
3974
3975 #if HAVE_SYS_POLL_H
3976     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3977     for (i = 0; i<nfds; i++)
3978     {
3979         ZOOM_connection c = poll_cs[i];
3980         if (r && c->mask)
3981         {
3982             int mask = 0;
3983             if (pollfds[i].revents & POLLIN)
3984                 mask += ZOOM_SELECT_READ;
3985             if (pollfds[i].revents & POLLOUT)
3986                 mask += ZOOM_SELECT_WRITE;
3987             if (pollfds[i].revents & POLLERR)
3988                 mask += ZOOM_SELECT_EXCEPT;
3989             if (mask)
3990                 ZOOM_connection_do_io(c, mask);
3991         }
3992         else if (r == 0 && c->mask)
3993         {
3994             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3995             /* timeout and this connection was waiting */
3996             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3997             do_close (c);
3998             ZOOM_connection_put_event(c, event);
3999         }
4000     }
4001 #else
4002     tv.tv_sec = timeout;
4003     tv.tv_usec = 0;
4004     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
4005     for (i = 0; i<no; i++)
4006     {
4007         ZOOM_connection c = cs[i];
4008         int fd, mask;
4009
4010         if (!c)
4011             continue;
4012         fd = z3950_connection_socket(c);
4013         mask = 0;
4014         if (r && c->mask)
4015         {
4016             /* no timeout and real socket */
4017             if (FD_ISSET(fd, &input))
4018                 mask += ZOOM_SELECT_READ;
4019             if (FD_ISSET(fd, &output))
4020                 mask += ZOOM_SELECT_WRITE;
4021             if (FD_ISSET(fd, &except))
4022                 mask += ZOOM_SELECT_EXCEPT;
4023             if (mask)
4024                 ZOOM_connection_do_io(c, mask);
4025         }
4026         if (r == 0 && c->mask)
4027         {
4028             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4029             /* timeout and this connection was waiting */
4030             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4031             do_close (c);
4032             ZOOM_connection_put_event(c, event);
4033         }
4034     }
4035 #endif
4036     for (i = 0; i<no; i++)
4037     {
4038         ZOOM_connection c = cs[i];
4039         ZOOM_Event event;
4040         if (c && (event = ZOOM_connection_get_event(c)))
4041         {
4042             ZOOM_Event_destroy (event);
4043             return i+1;
4044         }
4045     }
4046     return 0;
4047 }
4048
4049
4050 /*
4051  * Returns an xmalloc()d string containing RPN that corresponds to the
4052  * CQL passed in.  On error, sets the Connection object's error state
4053  * and returns a null pointer.
4054  * ### We could cache CQL parser and/or transformer in Connection.
4055  */
4056 static char *cql2pqf(ZOOM_connection c, const char *cql)
4057 {
4058     CQL_parser parser;
4059     int error;
4060     struct cql_node *node;
4061     const char *cqlfile;
4062     static cql_transform_t trans;
4063     char pqfbuf[512];
4064
4065     parser = cql_parser_create();
4066     if ((error = cql_parser_string(parser, cql)) != 0) {
4067         cql_parser_destroy(parser);
4068         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4069         return 0;
4070     }
4071
4072     node = cql_parser_result(parser);
4073     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4074
4075     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4076     if (cqlfile == 0) {
4077         cql_parser_destroy(parser);
4078         cql_node_destroy(node);
4079         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4080         return 0;
4081     }
4082
4083     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4084         char buf[512];
4085         cql_parser_destroy(parser);
4086         cql_node_destroy(node);
4087         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4088                 cqlfile, strerror(errno));
4089         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4090         return 0;
4091     }
4092
4093     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4094     cql_parser_destroy(parser);
4095     cql_node_destroy(node);
4096     if (error != 0) {
4097         char buf[512];
4098         const char *addinfo;
4099         error = cql_transform_error(trans, &addinfo);
4100         cql_transform_close(trans);
4101         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4102         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4103         return 0;
4104     }
4105
4106     cql_transform_close(trans);
4107     return xstrdup(pqfbuf);
4108 }
4109
4110
4111 /*
4112  * Local variables:
4113  * c-basic-offset: 4
4114  * indent-tabs-mode: nil
4115  * End:
4116  * vim: shiftwidth=4 tabstop=8 expandtab
4117  */
4118