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 1.74 2006-06-02 13:08:27 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include "zoom-p.h"
  16
  17 #include <yaz/yaz-util.h>
  18 #include <yaz/xmalloc.h>
  19 #include <yaz/otherinfo.h>
  20 #include <yaz/log.h>
  21 #include <yaz/pquery.h>
  22 #include <yaz/marcdisp.h>
  23 #include <yaz/diagbib1.h>
  24 #include <yaz/charneg.h>
  25 #include <yaz/ill.h>
  26 #include <yaz/srw.h>
  27 #include <yaz/cql.h>
  28
  29 #if HAVE_SYS_TYPES_H
  30 #include <sys/types.h>
  31 #endif
  32 #if HAVE_SYS_TIME_H
  33 #include <sys/time.h>
  34 #endif
  35 #if HAVE_SYS_POLL_H
  36 #include <sys/poll.h>
  37 #endif
  38 #if HAVE_SYS_SELECT_H
  39 #include <sys/select.h>
  40 #endif
  41 #ifdef WIN32
  42 #include <winsock.h>
  43 #endif
  44
  45 static int log_api = 0;
  46 static int log_details = 0;
  47
  48 typedef enum {
  49     zoom_pending,
  50     zoom_complete
  51 } zoom_ret;
  52
  53 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  54 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  55 static char *cql2pqf(ZOOM_connection c, const char *cql);
  56
  57 static void initlog()
  58 {
  59     static int log_level_initialized = 0;
  60     if (!log_level_initialized)
  61     {
  62         log_api = yaz_log_module_level("zoom");
  63         log_details = yaz_log_module_level("zoomdetails");
  64         log_level_initialized = 1;
  65     }
  66 }
  67
  68 static ZOOM_Event ZOOM_Event_create (int kind)
  69 {
  70     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  71     event->kind = kind;
  72     event->next = 0;
  73     event->prev = 0;
  74     return event;
  75 }
  76
  77 static void ZOOM_Event_destroy (ZOOM_Event event)
  78 {
  79     xfree (event);
  80 }
  81
  82 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  83 {
  84     if (c->m_queue_back)
  85     {
  86         c->m_queue_back->prev = event;
  87         assert (c->m_queue_front);
  88     }
  89     else
  90     {
  91         assert (!c->m_queue_front);
  92         c->m_queue_front = event;
  93     }
  94     event->next = c->m_queue_back;
  95     event->prev = 0;
  96     c->m_queue_back = event;
  97 }
  98
  99 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 100 {
 101     ZOOM_Event event = c->m_queue_front;
 102     if (!event)
 103     {
 104         c->last_event = ZOOM_EVENT_NONE;
 105         return 0;
 106     }
 107     assert (c->m_queue_back);
 108     c->m_queue_front = event->prev;
 109     if (c->m_queue_front)
 110     {
 111         assert (c->m_queue_back);
 112         c->m_queue_front->next = 0;
 113     }
 114     else
 115         c->m_queue_back = 0;
 116     c->last_event = event->kind;
 117     return event;
 118 }
 119
 120
 121 static void set_dset_error (ZOOM_connection c, int error,
 122                             const char *dset,
 123                             const char *addinfo, const char *addinfo2)
 124 {
 125     char *cp;
 126
 127     xfree (c->addinfo);
 128     c->addinfo = 0;
 129     c->error = error;
 130     if (!c->diagset || strcmp(dset, c->diagset))
 131     {
 132         xfree(c->diagset);
 133         c->diagset = xstrdup(dset);
 134         /* remove integer part from SRW diagset .. */
 135         if ((cp = strrchr(c->diagset, '/')))
 136            *cp = '\0';
 137     }
 138     if (addinfo && addinfo2)
 139     {
 140         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 141         strcpy(c->addinfo, addinfo);
 142         strcat(c->addinfo, addinfo2);
 143     }
 144     else if (addinfo)
 145         c->addinfo = xstrdup(addinfo);
 146     if (error)
 147         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 148                 c, c->host_port ? c->host_port : "<>", dset, error,
 149                 addinfo ? addinfo : "",
 150                 addinfo2 ? addinfo2 : "");
 151 }
 152
 153 #if HAVE_XML2
 154 static void set_HTTP_error (ZOOM_connection c, int error,
 155                             const char *addinfo, const char *addinfo2)
 156 {
 157     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 158 }
 159 #endif
 160
 161 static void set_ZOOM_error (ZOOM_connection c, int error,
 162                             const char *addinfo)
 163 {
 164     set_dset_error(c, error, "ZOOM", addinfo, 0);
 165 }
 166
 167 static void clear_error (ZOOM_connection c)
 168 {
 169     /*
 170      * If an error is tied to an operation then it's ok to clear: for
 171      * example, a diagnostic returned from a search is cleared by a
 172      * subsequent search.  However, problems such as Connection Lost
 173      * or Init Refused are not cleared, because they are not
 174      * recoverable: doing another search doesn't help.
 175      */
 176     switch (c->error)
 177     {
 178     case ZOOM_ERROR_CONNECT:
 179     case ZOOM_ERROR_MEMORY:
 180     case ZOOM_ERROR_DECODE:
 181     case ZOOM_ERROR_CONNECTION_LOST:
 182     case ZOOM_ERROR_INIT:
 183     case ZOOM_ERROR_INTERNAL:
 184     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 185         break;
 186     default:
 187         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 188     }
 189 }
 190
 191 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 192 {
 193     ZOOM_task *taskp = &c->tasks;
 194     while (*taskp)
 195         taskp = &(*taskp)->next;
 196     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 197     (*taskp)->running = 0;
 198     (*taskp)->which = which;
 199     (*taskp)->next = 0;
 200     clear_error (c);
 201     return *taskp;
 202 }
 203
 204 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 205 {
 206     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 207
 208     task->next = c->tasks;
 209     c->tasks = task;
 210
 211     task->running = 0;
 212     task->which = which;
 213     clear_error (c);
 214     return task;
 215 }
 216
 217 void ZOOM_connection_remove_task (ZOOM_connection c)
 218 {
 219     ZOOM_task task = c->tasks;
 220
 221     if (task)
 222     {
 223         c->tasks = task->next;
 224         switch (task->which)
 225         {
 226         case ZOOM_TASK_SEARCH:
 227             ZOOM_resultset_destroy (task->u.search.resultset);
 228             break;
 229         case ZOOM_TASK_RETRIEVE:
 230             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 231             break;
 232         case ZOOM_TASK_CONNECT:
 233             break;
 234         case ZOOM_TASK_SCAN:
 235             ZOOM_scanset_destroy (task->u.scan.scan);
 236             break;
 237         case ZOOM_TASK_PACKAGE:
 238             ZOOM_package_destroy (task->u.package);
 239             break;
 240         case ZOOM_TASK_SORT:
 241             ZOOM_resultset_destroy (task->u.sort.resultset);
 242             ZOOM_query_destroy(task->u.sort.q);
 243             break;
 244         default:
 245             assert (0);
 246         }
 247         xfree (task);
 248
 249         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     int i;
 638     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 639
 640     initlog();
 641
 642     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 643     r->refcount = 1;
 644     r->size = 0;
 645     r->odr = odr_createmem (ODR_ENCODE);
 646     r->start = 0;
 647     r->piggyback = 1;
 648     r->setname = 0;
 649     r->schema = 0;
 650     r->count = 0;
 651     r->step = 0;
 652     for (i = 0; i<RECORD_HASH_SIZE; i++)
 653         r->record_hash[i] = 0;
 654     r->r_sort_spec = 0;
 655     r->query = 0;
 656     r->connection = 0;
 657     r->next = 0;
 658     return r;
 659 }
 660
 661 ZOOM_API(ZOOM_resultset)
 662 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 663 {
 664     ZOOM_resultset r;
 665     ZOOM_query s = ZOOM_query_create();
 666
 667     ZOOM_query_prefix (s, q);
 668
 669     r = ZOOM_connection_search (c, s);
 670     ZOOM_query_destroy (s);
 671     return r;
 672 }
 673
 674 ZOOM_API(ZOOM_resultset)
 675 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 676 {
 677     ZOOM_resultset r = ZOOM_resultset_create ();
 678     ZOOM_task task;
 679     const char *cp;
 680
 681     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 682     r->r_sort_spec = q->sort_spec;
 683     r->query = q;
 684
 685     r->options = ZOOM_options_create_with_parent(c->options);
 686
 687     r->start = ZOOM_options_get_int(r->options, "start", 0);
 688     r->count = ZOOM_options_get_int(r->options, "count", 0);
 689     {
 690         /* If "presentChunk" is defined use that; otherwise "step" */
 691         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 692         r->step = ZOOM_options_get_int(r->options,
 693                                        (cp != 0 ? "presentChunk": "step"), 0);
 694     }
 695     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 696     cp = ZOOM_options_get (r->options, "setname");
 697     if (cp)
 698         r->setname = xstrdup(cp);
 699     cp = ZOOM_options_get (r->options, "schema");
 700     if (cp)
 701         r->schema = xstrdup(cp);
 702
 703     r->connection = c;
 704
 705     r->next = c->resultsets;
 706     c->resultsets = r;
 707
 708     if (c->host_port && c->proto == PROTO_HTTP)
 709     {
 710         if (!c->cs)
 711         {
 712             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 713             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 714         }
 715         else
 716         {
 717             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 718             c->reconnect_ok = 1;
 719         }
 720     }
 721
 722     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 723     task->u.search.resultset = r;
 724     ZOOM_resultset_addref (r);
 725
 726     (q->refcount)++;
 727
 728     if (!c->async)
 729     {
 730         while (ZOOM_event (1, &c))
 731             ;
 732     }
 733     return r;
 734 }
 735
 736 /*
 737  * This is the old result-set sorting API, which is maintained only
 738  * for the sake of binary compatibility.  There is no reason ever to
 739  * use this rather than ZOOM_resultset_sort1().
 740  */
 741 ZOOM_API(void)
 742 ZOOM_resultset_sort(ZOOM_resultset r,
 743                     const char *sort_type, const char *sort_spec)
 744 {
 745     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 746 }
 747
 748 ZOOM_API(int)
 749 ZOOM_resultset_sort1(ZOOM_resultset r,
 750                      const char *sort_type, const char *sort_spec)
 751 {
 752     ZOOM_connection c = r->connection;
 753     ZOOM_task task;
 754     ZOOM_query newq;
 755
 756     newq = ZOOM_query_create();
 757     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 758         return -1;
 759
 760     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 761             r, r, sort_type, sort_spec);
 762     if (!c)
 763         return 0;
 764
 765     if (c->host_port && c->proto == PROTO_HTTP)
 766     {
 767         if (!c->cs)
 768         {
 769             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 770             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 771         }
 772         else
 773         {
 774             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 775                     r);
 776             c->reconnect_ok = 1;
 777         }
 778     }
 779
 780     ZOOM_resultset_cache_reset(r);
 781     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 782     task->u.sort.resultset = r;
 783     task->u.sort.q = newq;
 784
 785     ZOOM_resultset_addref (r);
 786
 787     if (!c->async)
 788     {
 789         while (ZOOM_event (1, &c))
 790             ;
 791     }
 792
 793     return 0;
 794 }
 795
 796 ZOOM_API(void)
 797     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 798 {
 799     int i;
 800     for (i = 0; i<RECORD_HASH_SIZE; i++)
 801     {
 802         ZOOM_record_cache rc;
 803         for (rc = r->record_hash[i]; rc; rc = rc->next)
 804         {
 805             if (rc->rec.wrbuf_marc)
 806                 wrbuf_free (rc->rec.wrbuf_marc, 1);
 807             if (rc->rec.wrbuf_iconv)
 808                 wrbuf_free (rc->rec.wrbuf_iconv, 1);
 809             if (rc->rec.wrbuf_opac)
 810                 wrbuf_free (rc->rec.wrbuf_opac, 1);
 811         }
 812         r->record_hash[i] = 0;
 813     }
 814 }
 815
 816 ZOOM_API(void)
 817 ZOOM_resultset_destroy(ZOOM_resultset r)
 818 {
 819     if (!r)
 820         return;
 821     (r->refcount)--;
 822     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 823             r, r, r->refcount);
 824     if (r->refcount == 0)
 825     {
 826         ZOOM_resultset_cache_reset(r);
 827
 828         if (r->connection)
 829         {
 830             /* remove ourselves from the resultsets in connection */
 831             ZOOM_resultset *rp = &r->connection->resultsets;
 832             while (1)
 833             {
 834                 assert (*rp);   /* we must be in this list!! */
 835                 if (*rp == r)
 836                 {   /* OK, we're here - take us out of it */
 837                     *rp = (*rp)->next;
 838                     break;
 839                 }
 840                 rp = &(*rp)->next;
 841             }
 842         }
 843         ZOOM_query_destroy (r->query);
 844         ZOOM_options_destroy (r->options);
 845         odr_destroy (r->odr);
 846         xfree (r->setname);
 847         xfree (r->schema);
 848         xfree (r);
 849     }
 850 }
 851
 852 ZOOM_API(size_t)
 853 ZOOM_resultset_size (ZOOM_resultset r)
 854 {
 855     return r->size;
 856 }
 857
 858 static void do_close (ZOOM_connection c)
 859 {
 860     if (c->cs)
 861         cs_close(c->cs);
 862     c->cs = 0;
 863     c->mask = 0;
 864     c->state = STATE_IDLE;
 865 }
 866
 867 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 868                                      int force_sync, int start, int count)
 869 {
 870     ZOOM_task task;
 871     ZOOM_connection c;
 872     const char *cp;
 873
 874     if (!r)
 875         return;
 876     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 877             " count=%d", r, force_sync, start, count);
 878     c = r->connection;
 879     if (!c)
 880         return;
 881
 882     if (c->host_port && c->proto == PROTO_HTTP)
 883     {
 884         if (!c->cs)
 885         {
 886             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 887             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 888         }
 889         else
 890         {
 891             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 892                     "reconnect", r);
 893             c->reconnect_ok = 1;
 894         }
 895     }
 896     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 897     task->u.retrieve.resultset = r;
 898     task->u.retrieve.start = start;
 899     task->u.retrieve.count = count;
 900
 901     cp = ZOOM_options_get (r->options, "schema");
 902     if (cp)
 903     {
 904         if (!r->schema || strcmp(r->schema, cp))
 905         {
 906             xfree(r->schema);
 907             r->schema = xstrdup(cp);
 908         }
 909     }
 910
 911     ZOOM_resultset_addref (r);
 912
 913     if (!r->connection->async || force_sync)
 914         while (r->connection && ZOOM_event (1, &r->connection))
 915             ;
 916 }
 917
 918 ZOOM_API(void)
 919 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 920                         size_t start, size_t count)
 921 {
 922     int force_present = 0;
 923
 924     if (!r)
 925         return ;
 926     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
 927             r, r, (long) start, (long) count);
 928     if (count && recs)
 929         force_present = 1;
 930     ZOOM_resultset_retrieve (r, force_present, start, count);
 931     if (force_present)
 932     {
 933         size_t i;
 934         for (i = 0; i< count; i++)
 935             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 936     }
 937 }
 938
 939 static void get_cert(ZOOM_connection c)
 940 {
 941     char *cert_buf;
 942     int cert_len;
 943
 944     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 945     {
 946         ZOOM_connection_option_setl(c, "sslPeerCert",
 947                                     cert_buf, cert_len);
 948         xfree(cert_buf);
 949     }
 950 }
 951
 952 static zoom_ret do_connect (ZOOM_connection c)
 953 {
 954     void *add;
 955     const char *effective_host;
 956
 957     if (c->proxy)
 958         effective_host = c->proxy;
 959     else
 960         effective_host = c->host_port;
 961
 962     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
 963
 964     if (c->cs)
 965         cs_close(c->cs);
 966     c->cs = cs_create_host (effective_host, 0, &add);
 967
 968     if (c->cs && c->cs->protocol == PROTO_HTTP)
 969     {
 970 #if HAVE_XML2
 971         const char *path = 0;
 972
 973         c->proto = PROTO_HTTP;
 974         cs_get_host_args(c->host_port, &path);
 975         xfree(c->path);
 976         c->path = (char*) xmalloc(strlen(path)+2);
 977         c->path[0] = '/';
 978         strcpy (c->path+1, path);
 979 #else
 980         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 981         do_close(c);
 982         return zoom_complete;
 983 #endif
 984     }
 985     if (c->cs)
 986     {
 987         int ret = cs_connect (c->cs, add);
 988         if (ret == 0)
 989         {
 990             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 991             ZOOM_connection_put_event(c, event);
 992             get_cert(c);
 993             if (c->proto == PROTO_Z3950)
 994                 ZOOM_connection_send_init(c);
 995             else
 996             {
 997                 /* no init request for SRW .. */
 998                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 999                 ZOOM_connection_remove_task (c);
1000                 c->mask = 0;
1001                 ZOOM_connection_exec_task (c);
1002             }
1003             c->state = STATE_ESTABLISHED;
1004             return zoom_pending;
1005         }
1006         else if (ret > 0)
1007         {
1008             c->state = STATE_CONNECTING;
1009             c->mask = ZOOM_SELECT_EXCEPT;
1010             if (c->cs->io_pending & CS_WANT_WRITE)
1011                 c->mask += ZOOM_SELECT_WRITE;
1012             if (c->cs->io_pending & CS_WANT_READ)
1013                 c->mask += ZOOM_SELECT_READ;
1014             return zoom_pending;
1015         }
1016     }
1017     c->state = STATE_IDLE;
1018     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1019     return zoom_complete;
1020 }
1021
1022 int z3950_connection_socket(ZOOM_connection c)
1023 {
1024     if (c->cs)
1025         return cs_fileno(c->cs);
1026     return -1;
1027 }
1028
1029 int z3950_connection_mask(ZOOM_connection c)
1030 {
1031     if (c->cs)
1032         return c->mask;
1033     return 0;
1034 }
1035
1036 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
1037 {
1038     int i;
1039     for (i = 0; i<200; i++)
1040     {
1041         size_t len;
1042         Z_OtherInformation **oi;
1043         char buf[80];
1044         const char *val;
1045         const char *cp;
1046         int oidval;
1047
1048         sprintf (buf, "otherInfo%d", i);
1049         val = ZOOM_options_get (c->options, buf);
1050         if (!val)
1051             break;
1052         cp = strchr(val, ':');
1053         if (!cp)
1054             continue;
1055         len = cp - val;
1056         if (len >= sizeof(buf))
1057             len = sizeof(buf)-1;
1058         memcpy (buf, val, len);
1059         buf[len] = '\0';
1060         oidval = oid_getvalbyname (buf);
1061         if (oidval == VAL_NONE)
1062             continue;
1063
1064         yaz_oi_APDU(a, &oi);
1065         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1066     }
1067 }
1068
1069 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1070 {
1071     assert (a);
1072     if (c->cookie_out)
1073     {
1074         Z_OtherInformation **oi;
1075         yaz_oi_APDU(a, &oi);
1076         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1077     }
1078     if (c->client_IP)
1079     {
1080         Z_OtherInformation **oi;
1081         yaz_oi_APDU(a, &oi);
1082         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1083     }
1084     otherInfo_attach (c, a, out);
1085     if (!z_APDU(out, &a, 0, 0))
1086     {
1087         FILE *outf = fopen("/tmp/apdu.txt", "a");
1088         if (a && outf)
1089         {
1090             ODR odr_pr = odr_createmem(ODR_PRINT);
1091             fprintf (outf, "a=%p\n", a);
1092             odr_setprint(odr_pr, outf);
1093             z_APDU(odr_pr, &a, 0, 0);
1094             odr_destroy(odr_pr);
1095         }
1096         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1097         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1098         odr_reset(out);
1099         return -1;
1100     }
1101     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1102     return 0;
1103 }
1104
1105 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
1106 {
1107     ZOOM_Event event;
1108     assert (a);
1109     if (encode_APDU(c, a, c->odr_out))
1110         return zoom_complete;
1111     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1112     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1113     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1114     ZOOM_connection_put_event (c, event);
1115     odr_reset(c->odr_out);
1116     return do_write (c);
1117 }
1118
1119 /* returns 1 if PDU was sent OK (still pending )
1120            0 if PDU was not sent OK (nothing to wait for)
1121 */
1122
1123 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1124 {
1125     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1126     Z_InitRequest *ireq = apdu->u.initRequest;
1127     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1128         odr_malloc(c->odr_out, sizeof(*auth));
1129     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1130     const char *auth_userId = ZOOM_options_get (c->options, "user");
1131     const char *auth_password = ZOOM_options_get (c->options, "password");
1132     char *version;
1133
1134     /* support the pass for backwards compatibility */
1135     if (!auth_password)
1136         auth_password = ZOOM_options_get (c->options, "pass");
1137
1138     ODR_MASK_SET(ireq->options, Z_Options_search);
1139     ODR_MASK_SET(ireq->options, Z_Options_present);
1140     ODR_MASK_SET(ireq->options, Z_Options_scan);
1141     ODR_MASK_SET(ireq->options, Z_Options_sort);
1142     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1143     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1144
1145     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1146     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1147     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1148
1149     /* Index Data's Z39.50 Implementor Id is 81 */
1150     ireq->implementationId = odr_prepend(c->odr_out,
1151         ZOOM_options_get(c->options, "implementationId"),
1152         odr_prepend(c->odr_out, "81", ireq->implementationId));
1153
1154     ireq->implementationName = odr_prepend(c->odr_out,
1155         ZOOM_options_get(c->options, "implementationName"),
1156         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1157
1158     version = odr_strdup(c->odr_out, "$Revision: 1.74 $");
1159     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1160         version[strlen(version)-2] = '\0';
1161     ireq->implementationVersion = odr_prepend(c->odr_out,
1162         ZOOM_options_get(c->options, "implementationVersion"),
1163         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1164
1165     *ireq->maximumRecordSize =
1166         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1167     *ireq->preferredMessageSize =
1168         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1169
1170     if (auth_groupId || auth_password)
1171     {
1172         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1173         int i = 0;
1174         pass->groupId = 0;
1175         if (auth_groupId && *auth_groupId)
1176         {
1177             pass->groupId = (char *)
1178                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1179             strcpy(pass->groupId, auth_groupId);
1180             i++;
1181         }
1182         pass->userId = 0;
1183         if (auth_userId && *auth_userId)
1184         {
1185             pass->userId = (char *)
1186                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1187             strcpy(pass->userId, auth_userId);
1188             i++;
1189         }
1190         pass->password = 0;
1191         if (auth_password && *auth_password)
1192         {
1193             pass->password = (char *)
1194                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1195             strcpy(pass->password, auth_password);
1196             i++;
1197         }
1198         if (i)
1199         {
1200             auth->which = Z_IdAuthentication_idPass;
1201             auth->u.idPass = pass;
1202             ireq->idAuthentication = auth;
1203         }
1204     }
1205     else if (auth_userId)
1206     {
1207         auth->which = Z_IdAuthentication_open;
1208         auth->u.open = (char *)
1209             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1210         strcpy(auth->u.open, auth_userId);
1211         ireq->idAuthentication = auth;
1212     }
1213     if (c->proxy)
1214         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1215                                  VAL_PROXY, 1, c->host_port);
1216     if (c->charset || c->lang)
1217     {
1218         Z_OtherInformation **oi;
1219         Z_OtherInformationUnit *oi_unit;
1220
1221         yaz_oi_APDU(apdu, &oi);
1222
1223         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1224         {
1225             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1226             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1227             oi_unit->information.externallyDefinedInfo =
1228                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1229                                               c->charset, c->lang, 1);
1230         }
1231     }
1232     assert (apdu);
1233     return send_APDU (c, apdu);
1234 }
1235
1236 #if HAVE_XML2
1237 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1238 {
1239     Z_GDU *gdu;
1240     ZOOM_Event event;
1241
1242     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1243
1244     if (c->sru_mode == zoom_sru_get)
1245     {
1246         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1247     }
1248     else if (c->sru_mode == zoom_sru_post)
1249     {
1250         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1251     }
1252     else if (c->sru_mode == zoom_sru_soap)
1253     {
1254         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1255     }
1256     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1257         return zoom_complete;
1258     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1259
1260     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1261     ZOOM_connection_put_event (c, event);
1262     odr_reset(c->odr_out);
1263     return do_write (c);
1264 }
1265 #endif
1266
1267 #if HAVE_XML2
1268 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1269 {
1270     int i;
1271     ZOOM_resultset resultset = 0;
1272     Z_SRW_PDU *sr = 0;
1273     const char *recordPacking = 0;
1274
1275     if (c->error)                  /* don't continue on error */
1276         return zoom_complete;
1277     assert (c->tasks);
1278     if (c->tasks->which == ZOOM_TASK_SEARCH)
1279     {
1280         resultset = c->tasks->u.search.resultset;
1281         resultset->setname = xstrdup ("default");
1282         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1283     }
1284     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1285     {
1286         resultset = c->tasks->u.retrieve.resultset;
1287
1288         resultset->start = c->tasks->u.retrieve.start;
1289         resultset->count = c->tasks->u.retrieve.count;
1290
1291         if (resultset->start >= resultset->size)
1292             return zoom_complete;
1293         if (resultset->start + resultset->count > resultset->size)
1294             resultset->count = resultset->size - resultset->start;
1295
1296         for (i = 0; i<resultset->count; i++)
1297         {
1298             ZOOM_record rec =
1299                 record_cache_lookup (resultset, i + resultset->start);
1300             if (!rec)
1301                 break;
1302         }
1303         if (i == resultset->count)
1304             return zoom_complete;
1305     }
1306     assert(resultset->query);
1307
1308     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1309
1310     if (resultset->query->z_query->which == Z_Query_type_104
1311         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1312     {
1313
1314         sr->u.request->query_type = Z_SRW_query_type_cql;
1315         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1316     }
1317     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1318              resultset->query->z_query->u.type_1)
1319     {
1320         sr->u.request->query_type = Z_SRW_query_type_pqf;
1321         sr->u.request->query.pqf = resultset->query->query_string;
1322     }
1323     else
1324     {
1325         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1326         return zoom_complete;
1327     }
1328     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1329     sr->u.request->maximumRecords = odr_intdup (
1330         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1331     sr->u.request->recordSchema = resultset->schema;
1332
1333     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1334
1335     if (recordPacking)
1336         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1337
1338     return send_srw(c, sr);
1339 }
1340 #else
1341 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1342 {
1343     return zoom_complete;
1344 }
1345 #endif
1346
1347 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1348 {
1349     ZOOM_resultset r;
1350     int lslb, ssub, mspn;
1351     const char *syntax;
1352     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1353     Z_SearchRequest *search_req = apdu->u.searchRequest;
1354     const char *elementSetName;
1355     const char *smallSetElementSetName;
1356     const char *mediumSetElementSetName;
1357
1358     assert (c->tasks);
1359     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1360
1361     r = c->tasks->u.search.resultset;
1362
1363     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1364
1365     elementSetName =
1366         ZOOM_options_get (r->options, "elementSetName");
1367     smallSetElementSetName  =
1368         ZOOM_options_get (r->options, "smallSetElementSetName");
1369     mediumSetElementSetName =
1370         ZOOM_options_get (r->options, "mediumSetElementSetName");
1371
1372     if (!smallSetElementSetName)
1373         smallSetElementSetName = elementSetName;
1374
1375     if (!mediumSetElementSetName)
1376         mediumSetElementSetName = elementSetName;
1377
1378     assert (r);
1379     assert (r->query);
1380
1381     /* prepare query for the search request */
1382     search_req->query = r->query->z_query;
1383     if (!search_req->query)
1384     {
1385         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1386         return zoom_complete;
1387     }
1388
1389     search_req->databaseNames =
1390         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1391
1392     /* get syntax (no need to provide unless piggyback is in effect) */
1393     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1394
1395     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1396     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1397     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1398     if (lslb != -1 && ssub != -1 && mspn != -1)
1399     {
1400         /* So're a Z39.50 expert? Let's hope you don't do sort */
1401         *search_req->largeSetLowerBound = lslb;
1402         *search_req->smallSetUpperBound = ssub;
1403         *search_req->mediumSetPresentNumber = mspn;
1404     }
1405     else if (r->start == 0 && r->count > 0
1406              && r->piggyback && !r->r_sort_spec && !r->schema)
1407     {
1408         /* Regular piggyback - do it unless we're going to do sort */
1409         *search_req->largeSetLowerBound = 2000000000;
1410         *search_req->smallSetUpperBound = 1;
1411         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1412     }
1413     else
1414     {
1415         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1416         smallSetElementSetName = 0;
1417         mediumSetElementSetName = 0;
1418         syntax = 0;
1419     }
1420     if (smallSetElementSetName && *smallSetElementSetName)
1421     {
1422         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1423             odr_malloc (c->odr_out, sizeof(*esn));
1424
1425         esn->which = Z_ElementSetNames_generic;
1426         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1427         search_req->smallSetElementSetNames = esn;
1428     }
1429     if (mediumSetElementSetName && *mediumSetElementSetName)
1430     {
1431         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1432             odr_malloc (c->odr_out, sizeof(*esn));
1433
1434         esn->which = Z_ElementSetNames_generic;
1435         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1436         search_req->mediumSetElementSetNames = esn;
1437     }
1438     if (syntax)
1439         search_req->preferredRecordSyntax =
1440             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1441
1442     if (!r->setname)
1443     {
1444         if (c->support_named_resultsets)
1445         {
1446             char setname[14];
1447             int ord;
1448             /* find the lowest unused ordinal so that we re-use
1449                result sets on the server. */
1450             for (ord = 1; ; ord++)
1451             {
1452                 ZOOM_resultset rp;
1453                 sprintf (setname, "%d", ord);
1454                 for (rp = c->resultsets; rp; rp = rp->next)
1455                     if (rp->setname && !strcmp (rp->setname, setname))
1456                         break;
1457                 if (!rp)
1458                     break;
1459             }
1460             r->setname = xstrdup (setname);
1461             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1462                     "set %s", c, r->setname);
1463         }
1464         else
1465         {
1466             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1467                     "default set", c);
1468             r->setname = xstrdup ("default");
1469         }
1470         ZOOM_options_set (r->options, "setname", r->setname);
1471     }
1472     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1473     return send_APDU (c, apdu);
1474 }
1475
1476 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1477 {
1478     int oclass;
1479     char *addinfo = 0;
1480
1481     switch (r->which)
1482     {
1483     case Z_DefaultDiagFormat_v2Addinfo:
1484         addinfo = r->u.v2Addinfo;
1485         break;
1486     case Z_DefaultDiagFormat_v3Addinfo:
1487         addinfo = r->u.v3Addinfo;
1488         break;
1489     }
1490     xfree (c->addinfo);
1491     c->addinfo = 0;
1492     set_dset_error(c, *r->condition,
1493                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1494                    addinfo, 0);
1495 }
1496
1497 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1498 {
1499     if (p->which != Z_DiagRec_defaultFormat)
1500         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1501     else
1502         response_default_diag(c, p->u.defaultFormat);
1503 }
1504
1505 ZOOM_API(ZOOM_record)
1506 ZOOM_record_clone (ZOOM_record srec)
1507 {
1508     char *buf;
1509     int size;
1510     ODR odr_enc;
1511     ZOOM_record nrec;
1512
1513     odr_enc = odr_createmem(ODR_ENCODE);
1514     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1515         return 0;
1516     buf = odr_getbuf (odr_enc, &size, 0);
1517
1518     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1519     nrec->odr = odr_createmem(ODR_DECODE);
1520     nrec->wrbuf_marc = 0;
1521     nrec->wrbuf_iconv = 0;
1522     nrec->wrbuf_opac = 0;
1523     odr_setbuf (nrec->odr, buf, size, 0);
1524     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1525
1526     odr_destroy (odr_enc);
1527     return nrec;
1528 }
1529
1530 ZOOM_API(ZOOM_record)
1531 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1532 {
1533     return record_cache_lookup (s, pos);
1534 }
1535
1536 ZOOM_API(ZOOM_record)
1537 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1538 {
1539     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1540
1541     if (!rec)
1542     {
1543         /*
1544          * MIKE: I think force_sync should always be zero, but I don't
1545          * want to make this change until I get the go-ahead from
1546          * Adam, in case something depends on the old synchronous
1547          * behaviour.
1548          */
1549         int force_sync = 1;
1550         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1551         ZOOM_resultset_retrieve (r, force_sync, pos, 1);
1552         rec = ZOOM_resultset_record_immediate (r, pos);
1553     }
1554     return rec;
1555 }
1556
1557 ZOOM_API(void)
1558 ZOOM_record_destroy (ZOOM_record rec)
1559 {
1560     if (!rec)
1561         return;
1562     if (rec->wrbuf_marc)
1563         wrbuf_free (rec->wrbuf_marc, 1);
1564     if (rec->wrbuf_iconv)
1565         wrbuf_free (rec->wrbuf_iconv, 1);
1566     if (rec->wrbuf_opac)
1567         wrbuf_free (rec->wrbuf_opac, 1);
1568     odr_destroy (rec->odr);
1569     xfree (rec);
1570 }
1571
1572 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1573                                      int *len,
1574                                      const char *buf, int sz,
1575                                      const char *record_charset)
1576 {
1577     char to[40];
1578     char from[40];
1579     yaz_iconv_t cd = 0;
1580     yaz_marc_t mt = yaz_marc_create();
1581
1582     *from = '\0';
1583     strcpy(to, "UTF-8");
1584     if (record_charset && *record_charset)
1585     {
1586         /* Use "from,to" or just "from" */
1587         const char *cp = strchr(record_charset, ',');
1588         int clen = strlen(record_charset);
1589         if (cp && cp[1])
1590         {
1591             strncpy( to, cp+1, sizeof(to)-1);
1592             to[sizeof(to)-1] = '\0';
1593             clen = cp - record_charset;
1594         }
1595         if (clen > sizeof(from)-1)
1596             clen = sizeof(from)-1;
1597
1598         if (clen)
1599             strncpy(from, record_charset, clen);
1600         from[clen] = '\0';
1601     }
1602
1603     if (*from && *to)
1604     {
1605         cd = yaz_iconv_open(to, from);
1606         yaz_marc_iconv(mt, cd);
1607     }
1608
1609     yaz_marc_xml(mt, marc_type);
1610     if (!rec->wrbuf_marc)
1611         rec->wrbuf_marc = wrbuf_alloc();
1612     wrbuf_rewind (rec->wrbuf_marc);
1613     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1614     {
1615         yaz_marc_destroy(mt);
1616         if (cd)
1617             yaz_iconv_close(cd);
1618         if (len)
1619             *len = wrbuf_len(rec->wrbuf_marc);
1620         return wrbuf_buf(rec->wrbuf_marc);
1621     }
1622     yaz_marc_destroy(mt);
1623     if (cd)
1624         yaz_iconv_close(cd);
1625     return 0;
1626 }
1627
1628 static const char *record_iconv_return(ZOOM_record rec, int *len,
1629                                        const char *buf, int sz,
1630                                        const char *record_charset)
1631 {
1632     char to[40];
1633     char from[40];
1634     yaz_iconv_t cd = 0;
1635
1636     *from = '\0';
1637     strcpy(to, "UTF-8");
1638     if (record_charset && *record_charset)
1639     {
1640         /* Use "from,to" or just "from" */
1641         const char *cp = strchr(record_charset, ',');
1642         int clen = strlen(record_charset);
1643         if (cp && cp[1])
1644         {
1645             strncpy( to, cp+1, sizeof(to)-1);
1646             to[sizeof(to)-1] = '\0';
1647             clen = cp - record_charset;
1648         }
1649         if (clen > sizeof(from)-1)
1650             clen = sizeof(from)-1;
1651
1652         if (clen)
1653             strncpy(from, record_charset, clen);
1654         from[clen] = '\0';
1655     }
1656
1657     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1658     {
1659         char outbuf[12];
1660         size_t inbytesleft = sz;
1661         const char *inp = buf;
1662
1663         if (!rec->wrbuf_iconv)
1664             rec->wrbuf_iconv = wrbuf_alloc();
1665
1666         wrbuf_rewind(rec->wrbuf_iconv);
1667
1668         while (inbytesleft)
1669         {
1670             size_t outbytesleft = sizeof(outbuf);
1671             char *outp = outbuf;
1672             size_t r = yaz_iconv (cd, (char**) &inp,
1673                                   &inbytesleft,
1674                                   &outp, &outbytesleft);
1675             if (r == (size_t) (-1))
1676             {
1677                 int e = yaz_iconv_error(cd);
1678                 if (e != YAZ_ICONV_E2BIG)
1679                     break;
1680             }
1681             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1682         }
1683         wrbuf_puts(rec->wrbuf_iconv, "");
1684         buf = wrbuf_buf(rec->wrbuf_iconv);
1685         sz = wrbuf_len(rec->wrbuf_iconv);
1686         yaz_iconv_close(cd);
1687     }
1688     if (len)
1689         *len = sz;
1690     return buf;
1691 }
1692
1693 ZOOM_API(const char *)
1694 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1695 {
1696     char type[40];
1697     char charset[40];
1698     char xpath[512];
1699     const char *cp;
1700     int i;
1701     Z_NamePlusRecord *npr;
1702
1703     if (len)
1704         *len = 0; /* default return */
1705
1706     if (!rec)
1707         return 0;
1708     npr = rec->npr;
1709     if (!npr)
1710         return 0;
1711
1712     cp = type_spec;
1713     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1714     {
1715         if (cp[i] == ';' || cp[i] == ' ')
1716             break;
1717         type[i] = cp[i];
1718     }
1719     type[i] = '\0';
1720     charset[0] = '\0';
1721     while (type_spec[i] == ';')
1722     {
1723         i++;
1724         while (type_spec[i] == ' ')
1725             i++;
1726         if (!strncmp(type_spec+i, "charset=", 8))
1727         {
1728             int j = 0;
1729             i = i + 8; /* skip charset= */
1730             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1731             {
1732                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1733                     break;
1734                 charset[j] = cp[i];
1735             }
1736             charset[j] = '\0';
1737         }
1738         else if (!strncmp(type_spec+i, "xpath=", 6))
1739         {
1740             int j = 0;
1741             i = i + 6;
1742             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1743                 xpath[j] = cp[i];
1744             xpath[j] = '\0';
1745         }
1746         while (type_spec[i] == ' ')
1747             i++;
1748     }
1749     if (!strcmp (type, "database"))
1750     {
1751         if (len)
1752             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1753         return npr->databaseName;
1754     }
1755     else if (!strcmp (type, "syntax"))
1756     {
1757         const char *desc = 0;
1758         if (npr->which == Z_NamePlusRecord_databaseRecord)
1759         {
1760             Z_External *r = (Z_External *) npr->u.databaseRecord;
1761             oident *ent = oid_getentbyoid(r->direct_reference);
1762             if (ent)
1763                 desc = ent->desc;
1764         }
1765         if (!desc)
1766             desc = "none";
1767         if (len)
1768             *len = strlen(desc);
1769         return desc;
1770     }
1771     if (npr->which != Z_NamePlusRecord_databaseRecord)
1772         return 0;
1773
1774     /* from now on - we have a database record .. */
1775     if (!strcmp (type, "render"))
1776     {
1777         Z_External *r = (Z_External *) npr->u.databaseRecord;
1778         oident *ent = oid_getentbyoid(r->direct_reference);
1779
1780         /* render bibliographic record .. */
1781         if (r->which == Z_External_OPAC)
1782         {
1783             r = r->u.opac->bibliographicRecord;
1784             if (!r)
1785                 return 0;
1786             ent = oid_getentbyoid(r->direct_reference);
1787         }
1788         if (r->which == Z_External_sutrs)
1789             return record_iconv_return(rec, len,
1790                                        (char*) r->u.sutrs->buf,
1791                                        r->u.sutrs->len,
1792                                        charset);
1793         else if (r->which == Z_External_octet)
1794         {
1795             const char *ret_buf;
1796             switch (ent->value)
1797             {
1798             case VAL_SOIF:
1799             case VAL_HTML:
1800             case VAL_SUTRS:
1801                 break;
1802             case VAL_TEXT_XML:
1803             case VAL_APPLICATION_XML:
1804                 break;
1805             default:
1806                 ret_buf = marc_iconv_return(
1807                     rec, YAZ_MARC_LINE, len,
1808                     (const char *) r->u.octet_aligned->buf,
1809                     r->u.octet_aligned->len,
1810                     charset);
1811                 if (ret_buf)
1812                     return ret_buf;
1813             }
1814             return record_iconv_return(rec, len,
1815                                        (const char *) r->u.octet_aligned->buf,
1816                                        r->u.octet_aligned->len,
1817                                        charset);
1818         }
1819         else if (r->which == Z_External_grs1)
1820         {
1821             if (!rec->wrbuf_marc)
1822                 rec->wrbuf_marc = wrbuf_alloc();
1823             wrbuf_rewind (rec->wrbuf_marc);
1824             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1825             return record_iconv_return(rec, len,
1826                                        wrbuf_buf(rec->wrbuf_marc),
1827                                        wrbuf_len(rec->wrbuf_marc),
1828                                        charset);
1829         }
1830         return 0;
1831     }
1832     else if (!strcmp (type, "xml"))
1833     {
1834         Z_External *r = (Z_External *) npr->u.databaseRecord;
1835         oident *ent = oid_getentbyoid(r->direct_reference);
1836
1837         /* render bibliographic record .. */
1838         if (r->which == Z_External_OPAC)
1839         {
1840             r = r->u.opac->bibliographicRecord;
1841             if (!r)
1842                 return 0;
1843             ent = oid_getentbyoid(r->direct_reference);
1844         }
1845
1846         if (r->which == Z_External_sutrs)
1847             return record_iconv_return(rec, len,
1848                                        (const char *) r->u.sutrs->buf,
1849                                        r->u.sutrs->len,
1850                                        charset);
1851         else if (r->which == Z_External_octet)
1852         {
1853             const char *ret_buf;
1854             int marc_decode_type = YAZ_MARC_MARCXML;
1855
1856             switch (ent->value)
1857             {
1858             case VAL_SOIF:
1859             case VAL_HTML:
1860             case VAL_SUTRS:
1861                 break;
1862             case VAL_TEXT_XML:
1863             case VAL_APPLICATION_XML:
1864                 break;
1865             default:
1866                 ret_buf = marc_iconv_return(
1867                     rec, marc_decode_type, len,
1868                     (const char *) r->u.octet_aligned->buf,
1869                     r->u.octet_aligned->len,
1870                     charset);
1871                 if (ret_buf)
1872                     return ret_buf;
1873             }
1874             return record_iconv_return(rec, len,
1875                                        (const char *) r->u.octet_aligned->buf,
1876                                        r->u.octet_aligned->len,
1877                                        charset);
1878         }
1879         else if (r->which == Z_External_grs1)
1880         {
1881             if (len) *len = 5;
1882             return "GRS-1";
1883         }
1884         return 0;
1885     }
1886     else if (!strcmp (type, "raw"))
1887     {
1888         Z_External *r = (Z_External *) npr->u.databaseRecord;
1889
1890         if (r->which == Z_External_sutrs)
1891         {
1892             if (len) *len = r->u.sutrs->len;
1893             return (const char *) r->u.sutrs->buf;
1894         }
1895         else if (r->which == Z_External_octet)
1896         {
1897             if (len) *len = r->u.octet_aligned->len;
1898             return (const char *) r->u.octet_aligned->buf;
1899         }
1900         else /* grs-1, explain, OPAC, ... */
1901         {
1902             if (len) *len = -1;
1903             return (const char *) npr->u.databaseRecord;
1904         }
1905         return 0;
1906     }
1907     else if (!strcmp (type, "ext"))
1908     {
1909         if (len) *len = -1;
1910         return (const char *) npr->u.databaseRecord;
1911     }
1912     else if (!strcmp (type, "opac"))
1913
1914     {
1915         Z_External *r = (Z_External *) npr->u.databaseRecord;
1916         if (r->which == Z_External_OPAC)
1917         {
1918             if (!rec->wrbuf_opac)
1919                 rec->wrbuf_opac = wrbuf_alloc();
1920             wrbuf_rewind (rec->wrbuf_opac);
1921             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1922             return record_iconv_return(rec, len,
1923                                        wrbuf_buf(rec->wrbuf_opac),
1924                                        wrbuf_len(rec->wrbuf_opac),
1925                                        charset);
1926         }
1927     }
1928     return 0;
1929 }
1930
1931 static int strcmp_null(const char *v1, const char *v2)
1932 {
1933     if (!v1 && !v2)
1934         return 0;
1935     if (!v1 || !v2)
1936         return -1;
1937     return strcmp(v1, v2);
1938 }
1939
1940 static size_t record_hash(int pos)
1941 {
1942     if (pos < 0)
1943         pos = 0;
1944     return pos % RECORD_HASH_SIZE;
1945 }
1946
1947 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1948                               int pos)
1949 {
1950     ZOOM_record_cache rc;
1951     const char *elementSetName =
1952         ZOOM_resultset_option_get (r, "elementSetName");
1953     const char *syntax =
1954         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1955
1956     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1957     ZOOM_connection_put_event(r->connection, event);
1958
1959     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
1960     {
1961         if (pos == rc->pos)
1962         {
1963             if (strcmp_null(r->schema, rc->schema))
1964                 continue;
1965             if (strcmp_null(elementSetName,rc->elementSetName))
1966                 continue;
1967             if (strcmp_null(syntax, rc->syntax))
1968                 continue;
1969             /* not destroying rc->npr (it's handled by nmem )*/
1970             rc->rec.npr = npr;
1971             /* keeping wrbuf_marc too */
1972             return;
1973         }
1974     }
1975     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1976     rc->rec.npr = npr;
1977     rc->rec.odr = 0;
1978     rc->rec.wrbuf_marc = 0;
1979     rc->rec.wrbuf_iconv = 0;
1980     rc->rec.wrbuf_opac = 0;
1981     if (elementSetName)
1982         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1983     else
1984         rc->elementSetName = 0;
1985
1986     if (syntax)
1987         rc->syntax = odr_strdup (r->odr, syntax);
1988     else
1989         rc->syntax = 0;
1990
1991     if (r->schema)
1992         rc->schema = odr_strdup (r->odr, r->schema);
1993     else
1994         rc->schema = 0;
1995
1996     rc->pos = pos;
1997     rc->next = r->record_hash[record_hash(pos)];
1998     r->record_hash[record_hash(pos)] = rc;
1999 }
2000
2001 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
2002 {
2003     ZOOM_record_cache rc;
2004     const char *elementSetName =
2005         ZOOM_resultset_option_get (r, "elementSetName");
2006     const char *syntax =
2007         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2008
2009     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2010     {
2011         if (pos == rc->pos)
2012         {
2013             if (strcmp_null(r->schema, rc->schema))
2014                 continue;
2015             if (strcmp_null(elementSetName,rc->elementSetName))
2016                 continue;
2017             if (strcmp_null(syntax, rc->syntax))
2018                 continue;
2019             return &rc->rec;
2020         }
2021     }
2022     return 0;
2023 }
2024
2025 static void handle_records (ZOOM_connection c, Z_Records *sr,
2026                             int present_phase)
2027 {
2028     ZOOM_resultset resultset;
2029
2030     if (!c->tasks)
2031         return ;
2032     switch (c->tasks->which)
2033     {
2034     case ZOOM_TASK_SEARCH:
2035         resultset = c->tasks->u.search.resultset;
2036         break;
2037     case ZOOM_TASK_RETRIEVE:
2038         resultset = c->tasks->u.retrieve.resultset;
2039         break;
2040     default:
2041         return;
2042     }
2043     if (sr && sr->which == Z_Records_NSD)
2044         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2045     else if (sr && sr->which == Z_Records_multipleNSD)
2046     {
2047         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2048             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2049         else
2050             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2051     }
2052     else
2053     {
2054         if (resultset->count + resultset->start > resultset->size)
2055             resultset->count = resultset->size - resultset->start;
2056         if (resultset->count < 0)
2057             resultset->count = 0;
2058         if (sr && sr->which == Z_Records_DBOSD)
2059         {
2060             int i;
2061             NMEM nmem = odr_extract_mem (c->odr_in);
2062             Z_NamePlusRecordList *p =
2063                 sr->u.databaseOrSurDiagnostics;
2064             for (i = 0; i<p->num_records; i++)
2065             {
2066                 record_cache_add (resultset, p->records[i],
2067                                   i+ resultset->start);
2068             }
2069             /* transfer our response to search_nmem .. we need it later */
2070             nmem_transfer (resultset->odr->mem, nmem);
2071             nmem_destroy (nmem);
2072             if (present_phase && p->num_records == 0)
2073             {
2074                 /* present response and we didn't get any records! */
2075                 Z_NamePlusRecord *myrec =
2076                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2077                 record_cache_add(resultset, myrec, resultset->start);
2078             }
2079         }
2080         else if (present_phase)
2081         {
2082             /* present response and we didn't get any records! */
2083             Z_NamePlusRecord *myrec =
2084                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2085             record_cache_add(resultset, myrec, resultset->start);
2086         }
2087     }
2088 }
2089
2090 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2091 {
2092     handle_records (c, pr->records, 1);
2093 }
2094
2095 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2096                                        Z_Term *term)
2097 {
2098     switch (term->which)
2099     {
2100     case Z_Term_general:
2101         ZOOM_options_setl(opt, name,
2102                           (const char *)(term->u.general->buf),
2103                           term->u.general->len);
2104         break;
2105     case Z_Term_characterString:
2106         ZOOM_options_set(opt, name, term->u.characterString);
2107         break;
2108     case Z_Term_numeric:
2109         ZOOM_options_set_int(opt, name, *term->u.numeric);
2110         break;
2111     }
2112 }
2113
2114 static void handle_queryExpression(ZOOM_options opt, const char *name,
2115                                    Z_QueryExpression *exp)
2116 {
2117     char opt_name[80];
2118
2119     switch (exp->which)
2120     {
2121     case Z_QueryExpression_term:
2122         if (exp->u.term && exp->u.term->queryTerm)
2123         {
2124             sprintf(opt_name, "%s.term", name);
2125             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2126         }
2127         break;
2128     case Z_QueryExpression_query:
2129         break;
2130     }
2131 }
2132
2133 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2134                                 Z_OtherInformation *o)
2135 {
2136     int i;
2137     for (i = 0; o && i < o->num_elements; i++)
2138     {
2139         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2140         {
2141             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2142
2143             if (ext->which == Z_External_searchResult1)
2144             {
2145                 int j;
2146                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2147
2148                 if (sr->num)
2149                     ZOOM_options_set_int(
2150                         resultset->options, "searchresult.size", sr->num);
2151
2152                 for (j = 0; j < sr->num; j++)
2153                 {
2154                     Z_SearchInfoReport_s *ent =
2155                         ext->u.searchResult1->elements[j];
2156                     char pref[80];
2157
2158                     sprintf(pref, "searchresult.%d", j);
2159
2160                     if (ent->subqueryId)
2161                     {
2162                         char opt_name[80];
2163                         sprintf(opt_name, "%s.id", pref);
2164                         ZOOM_options_set(resultset->options, opt_name,
2165                                          ent->subqueryId);
2166                     }
2167                     if (ent->subqueryExpression)
2168                     {
2169                         char opt_name[80];
2170                         sprintf(opt_name, "%s.subquery", pref);
2171                         handle_queryExpression(resultset->options, opt_name,
2172                                                ent->subqueryExpression);
2173                     }
2174                     if (ent->subqueryInterpretation)
2175                     {
2176                         char opt_name[80];
2177                         sprintf(opt_name, "%s.interpretation", pref);
2178                         handle_queryExpression(resultset->options, opt_name,
2179                                                ent->subqueryInterpretation);
2180                     }
2181                     if (ent->subqueryRecommendation)
2182                     {
2183                         char opt_name[80];
2184                         sprintf(opt_name, "%s.recommendation", pref);
2185                         handle_queryExpression(resultset->options, opt_name,
2186                                                ent->subqueryRecommendation);
2187                     }
2188                     if (ent->subqueryCount)
2189                     {
2190                         char opt_name[80];
2191                         sprintf(opt_name, "%s.count", pref);
2192                         ZOOM_options_set_int(resultset->options, opt_name,
2193                                              *ent->subqueryCount);
2194                     }
2195                 }
2196             }
2197         }
2198     }
2199 }
2200
2201 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2202 {
2203     ZOOM_resultset resultset;
2204     ZOOM_Event event;
2205
2206     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2207         return ;
2208
2209     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2210     ZOOM_connection_put_event(c, event);
2211
2212     resultset = c->tasks->u.search.resultset;
2213
2214     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2215
2216     resultset->size = *sr->resultCount;
2217     handle_records (c, sr->records, 0);
2218 }
2219
2220 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2221 {
2222     if (res->diagnostics && res->num_diagnostics > 0)
2223         response_diag (c, res->diagnostics[0]);
2224 }
2225
2226 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2227 {
2228     NMEM nmem = odr_extract_mem (c->odr_in);
2229     ZOOM_scanset scan;
2230
2231     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2232         return 0;
2233     scan = c->tasks->u.scan.scan;
2234
2235     if (res->entries && res->entries->nonsurrogateDiagnostics)
2236         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2237     scan->scan_response = res;
2238     nmem_transfer (scan->odr->mem, nmem);
2239     if (res->stepSize)
2240         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2241     if (res->positionOfTerm)
2242         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2243     if (res->scanStatus)
2244         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2245     if (res->numberOfEntriesReturned)
2246         ZOOM_options_set_int (scan->options, "number",
2247                               *res->numberOfEntriesReturned);
2248     nmem_destroy (nmem);
2249     return 1;
2250 }
2251
2252 static zoom_ret send_sort (ZOOM_connection c,
2253                            ZOOM_resultset resultset)
2254 {
2255     if (c->error)
2256         resultset->r_sort_spec = 0;
2257     if (resultset->r_sort_spec)
2258     {
2259         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2260         Z_SortRequest *req = apdu->u.sortRequest;
2261
2262         req->num_inputResultSetNames = 1;
2263         req->inputResultSetNames = (Z_InternationalString **)
2264             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2265         req->inputResultSetNames[0] =
2266             odr_strdup (c->odr_out, resultset->setname);
2267         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2268         req->sortSequence = resultset->r_sort_spec;
2269         resultset->r_sort_spec = 0;
2270         return send_APDU (c, apdu);
2271     }
2272     return zoom_complete;
2273 }
2274
2275 static zoom_ret send_present(ZOOM_connection c)
2276 {
2277     Z_APDU *apdu = 0;
2278     Z_PresentRequest *req = 0;
2279     int i = 0;
2280     const char *syntax = 0;
2281     const char *elementSetName = 0;
2282     ZOOM_resultset  resultset;
2283
2284     if (!c->tasks)
2285     {
2286         yaz_log(log_details, "%p send_present no tasks", c);
2287         return zoom_complete;
2288     }
2289     switch (c->tasks->which)
2290     {
2291     case ZOOM_TASK_SEARCH:
2292         resultset = c->tasks->u.search.resultset;
2293         break;
2294     case ZOOM_TASK_RETRIEVE:
2295         resultset = c->tasks->u.retrieve.resultset;
2296         resultset->start = c->tasks->u.retrieve.start;
2297         resultset->count = c->tasks->u.retrieve.count;
2298
2299         if (resultset->start >= resultset->size)
2300         {
2301             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2302                     c, resultset->start, resultset->size);
2303             return zoom_complete;
2304         }
2305         if (resultset->start + resultset->count > resultset->size)
2306             resultset->count = resultset->size - resultset->start;
2307         break;
2308     default:
2309         return zoom_complete;
2310     }
2311     yaz_log(log_details, "%p send_present start=%d count=%d",
2312             c, resultset->start, resultset->count);
2313
2314     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2315     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2316
2317     if (c->error)                  /* don't continue on error */
2318         return zoom_complete;
2319     if (resultset->start < 0)
2320         return zoom_complete;
2321     for (i = 0; i<resultset->count; i++)
2322     {
2323         ZOOM_record rec =
2324             record_cache_lookup (resultset, i + resultset->start);
2325         if (!rec)
2326             break;
2327     }
2328     if (i == resultset->count)
2329     {
2330         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2331         return zoom_complete;
2332     }
2333
2334     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2335     req = apdu->u.presentRequest;
2336
2337     resultset->start += i;
2338     resultset->count -= i;
2339
2340     if (i)
2341         yaz_log(log_details, "%p send_present skip=%d", c, i);
2342
2343     *req->resultSetStartPoint = resultset->start + 1;
2344     *req->numberOfRecordsRequested = resultset->step>0 ?
2345         resultset->step : resultset->count;
2346     if (*req->numberOfRecordsRequested + resultset->start > resultset->size)
2347         *req->numberOfRecordsRequested = resultset->size -  resultset->start;
2348     assert (*req->numberOfRecordsRequested > 0);
2349
2350     if (syntax && *syntax)
2351         req->preferredRecordSyntax =
2352             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2353
2354     if (resultset->schema && *resultset->schema)
2355     {
2356         Z_RecordComposition *compo = (Z_RecordComposition *)
2357             odr_malloc (c->odr_out, sizeof(*compo));
2358
2359         req->recordComposition = compo;
2360         compo->which = Z_RecordComp_complex;
2361         compo->u.complex = (Z_CompSpec *)
2362             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2363         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2364             odr_malloc(c->odr_out, sizeof(bool_t));
2365         *compo->u.complex->selectAlternativeSyntax = 0;
2366
2367         compo->u.complex->generic = (Z_Specification *)
2368             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2369
2370         compo->u.complex->generic->which = Z_Schema_oid;
2371         compo->u.complex->generic->schema.oid = (Odr_oid *)
2372             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2373
2374         if (!compo->u.complex->generic->schema.oid)
2375         {
2376             /* OID wasn't a schema! Try record syntax instead. */
2377
2378             compo->u.complex->generic->schema.oid = (Odr_oid *)
2379                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2380         }
2381         if (elementSetName && *elementSetName)
2382         {
2383             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2384                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2385             compo->u.complex->generic->elementSpec->which =
2386                 Z_ElementSpec_elementSetName;
2387             compo->u.complex->generic->elementSpec->u.elementSetName =
2388                 odr_strdup (c->odr_out, elementSetName);
2389         }
2390         else
2391             compo->u.complex->generic->elementSpec = 0;
2392         compo->u.complex->num_dbSpecific = 0;
2393         compo->u.complex->dbSpecific = 0;
2394         compo->u.complex->num_recordSyntax = 0;
2395         compo->u.complex->recordSyntax = 0;
2396     }
2397     else if (elementSetName && *elementSetName)
2398     {
2399         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2400             odr_malloc (c->odr_out, sizeof(*esn));
2401         Z_RecordComposition *compo = (Z_RecordComposition *)
2402             odr_malloc (c->odr_out, sizeof(*compo));
2403
2404         esn->which = Z_ElementSetNames_generic;
2405         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2406         compo->which = Z_RecordComp_simple;
2407         compo->u.simple = esn;
2408         req->recordComposition = compo;
2409     }
2410     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2411     return send_APDU (c, apdu);
2412 }
2413
2414 ZOOM_API(ZOOM_scanset)
2415 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2416 {
2417     ZOOM_scanset s;
2418     ZOOM_query q = ZOOM_query_create();
2419
2420     ZOOM_query_prefix (q, start);
2421
2422     s = ZOOM_connection_scan1(c, q);
2423     ZOOM_query_destroy (q);
2424     return s;
2425
2426 }
2427
2428 ZOOM_API(ZOOM_scanset)
2429 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query q)
2430 {
2431     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2432     char *start;
2433     char *freeme = 0;
2434
2435     scan->connection = c;
2436     scan->odr = odr_createmem (ODR_DECODE);
2437     scan->options = ZOOM_options_create_with_parent (c->options);
2438     scan->refcount = 1;
2439     scan->scan_response = 0;
2440
2441     /*
2442      * We need to check the query-type, so we can recognise CQL and
2443      * compile it into a form that we can use here.  The ZOOM_query
2444      * structure has no explicit `type' member, but inspection of the
2445      * ZOOM_query_prefix() and ZOOM_query_cql() functions shows how
2446      * the structure is set up in each case.
2447      */
2448
2449     if (q->z_query->which == Z_Query_type_1) {
2450         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2451                 c, q, q->query_string);
2452         start = q->query_string;
2453     } else if (q->z_query->which == Z_Query_type_104) {
2454         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2455                 c, q, q->query_string);
2456         start = freeme = cql2pqf(c, q->query_string);
2457         if (start == 0)
2458             return 0;
2459     } else {
2460         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2461                 c, q, q->query_string);
2462         abort();
2463     }
2464
2465     scan->termListAndStartPoint =
2466         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2467     xfree (freeme);
2468     if (scan->termListAndStartPoint != 0)
2469     {
2470         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2471         task->u.scan.scan = scan;
2472
2473         (scan->refcount)++;
2474         if (!c->async)
2475         {
2476             while (ZOOM_event (1, &c))
2477                 ;
2478         }
2479     }
2480     return scan;
2481 }
2482
2483 ZOOM_API(void)
2484 ZOOM_scanset_destroy (ZOOM_scanset scan)
2485 {
2486     if (!scan)
2487         return;
2488     (scan->refcount)--;
2489     if (scan->refcount == 0)
2490     {
2491         odr_destroy (scan->odr);
2492
2493         ZOOM_options_destroy (scan->options);
2494         xfree (scan);
2495     }
2496 }
2497
2498 static zoom_ret send_package (ZOOM_connection c)
2499 {
2500     ZOOM_Event event;
2501
2502     yaz_log(log_details, "%p send_package", c);
2503     if (!c->tasks)
2504         return zoom_complete;
2505     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2506
2507     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2508     ZOOM_connection_put_event (c, event);
2509
2510     c->buf_out = c->tasks->u.package->buf_out;
2511     c->len_out = c->tasks->u.package->len_out;
2512
2513     return do_write(c);
2514 }
2515
2516 static zoom_ret send_scan (ZOOM_connection c)
2517 {
2518     ZOOM_scanset scan;
2519     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2520     Z_ScanRequest *req = apdu->u.scanRequest;
2521
2522     yaz_log(log_details, "%p send_scan", c);
2523     if (!c->tasks)
2524         return zoom_complete;
2525     assert (c->tasks->which == ZOOM_TASK_SCAN);
2526     scan = c->tasks->u.scan.scan;
2527
2528     req->termListAndStartPoint = scan->termListAndStartPoint;
2529     req->attributeSet = scan->attributeSet;
2530
2531     *req->numberOfTermsRequested =
2532         ZOOM_options_get_int(scan->options, "number", 10);
2533
2534     req->preferredPositionInResponse =
2535         odr_intdup (c->odr_out,
2536                     ZOOM_options_get_int(scan->options, "position", 1));
2537
2538     req->stepSize =
2539         odr_intdup (c->odr_out,
2540                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2541
2542     req->databaseNames = set_DatabaseNames (c, scan->options,
2543                                             &req->num_databaseNames);
2544
2545     return send_APDU (c, apdu);
2546 }
2547
2548 ZOOM_API(size_t)
2549 ZOOM_scanset_size (ZOOM_scanset scan)
2550 {
2551     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2552         return 0;
2553     return scan->scan_response->entries->num_entries;
2554 }
2555
2556 ZOOM_API(const char *)
2557 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2558                    int *occ, int *len)
2559 {
2560     const char *term = 0;
2561     size_t noent = ZOOM_scanset_size (scan);
2562     Z_ScanResponse *res = scan->scan_response;
2563
2564     *len = 0;
2565     *occ = 0;
2566     if (pos >= noent)
2567         return 0;
2568     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2569     {
2570         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2571
2572         if (t->term->which == Z_Term_general)
2573         {
2574             term = (const char *) t->term->u.general->buf;
2575             *len = t->term->u.general->len;
2576         }
2577         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2578     }
2579     return term;
2580 }
2581
2582 ZOOM_API(const char *)
2583 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2584                            int *occ, int *len)
2585 {
2586     const char *term = 0;
2587     size_t noent = ZOOM_scanset_size (scan);
2588     Z_ScanResponse *res = scan->scan_response;
2589
2590     *len = 0;
2591     *occ = 0;
2592     if (pos >= noent)
2593         return 0;
2594     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2595     {
2596         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2597
2598         if (t->displayTerm)
2599         {
2600             term = t->displayTerm;
2601             *len = strlen(term);
2602         }
2603         else if (t->term->which == Z_Term_general)
2604         {
2605             term = (const char *) t->term->u.general->buf;
2606             *len = t->term->u.general->len;
2607         }
2608         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2609     }
2610     return term;
2611 }
2612
2613 ZOOM_API(const char *)
2614 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2615 {
2616     return ZOOM_options_get (scan->options, key);
2617 }
2618
2619 ZOOM_API(void)
2620 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2621                               const char *val)
2622 {
2623     ZOOM_options_set (scan->options, key, val);
2624 }
2625
2626 static Z_APDU *create_es_package (ZOOM_package p, int type)
2627 {
2628     const char *str;
2629     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2630     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2631
2632     *req->function = Z_ExtendedServicesRequest_create;
2633
2634     str = ZOOM_options_get(p->options, "package-name");
2635     if (str && *str)
2636         req->packageName = nmem_strdup (p->odr_out->mem, str);
2637
2638     str = ZOOM_options_get(p->options, "user-id");
2639     if (str)
2640         req->userId = nmem_strdup (p->odr_out->mem, str);
2641
2642     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2643                                               type);
2644
2645     str = ZOOM_options_get(p->options, "function");
2646     if (str)
2647     {
2648         if (!strcmp (str, "create"))
2649             *req->function = 1;
2650         if (!strcmp (str, "delete"))
2651             *req->function = 2;
2652         if (!strcmp (str, "modify"))
2653             *req->function = 3;
2654     }
2655     return apdu;
2656 }
2657
2658 static const char *ill_array_lookup (void *clientData, const char *idx)
2659 {
2660     ZOOM_package p = (ZOOM_package) clientData;
2661     return ZOOM_options_get (p->options, idx+4);
2662 }
2663
2664 static Z_External *encode_ill_request (ZOOM_package p)
2665 {
2666     ODR out = p->odr_out;
2667     ILL_Request *req;
2668     Z_External *r = 0;
2669     struct ill_get_ctl ctl;
2670
2671     ctl.odr = p->odr_out;
2672     ctl.clientData = p;
2673     ctl.f = ill_array_lookup;
2674
2675     req = ill_get_ILLRequest(&ctl, "ill", 0);
2676
2677     if (!ill_Request (out, &req, 0, 0))
2678     {
2679         int ill_request_size;
2680         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2681         if (ill_request_buf)
2682             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2683         return 0;
2684     }
2685     else
2686     {
2687         oident oid;
2688         int illRequest_size = 0;
2689         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2690
2691         oid.proto = PROTO_GENERAL;
2692         oid.oclass = CLASS_GENERAL;
2693         oid.value = VAL_ISO_ILL_1;
2694
2695         r = (Z_External *) odr_malloc (out, sizeof(*r));
2696         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2697         r->indirect_reference = 0;
2698         r->descriptor = 0;
2699         r->which = Z_External_single;
2700
2701         r->u.single_ASN1_type =
2702             odr_create_Odr_oct(out,
2703                                (unsigned char *)illRequest_buf,
2704                                illRequest_size);
2705     }
2706     return r;
2707 }
2708
2709 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2710 {
2711     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2712     const char *str;
2713
2714     req->which = Z_IOItemOrder_esRequest;
2715     req->u.esRequest = (Z_IORequest *)
2716         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2717
2718     /* to keep part ... */
2719     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2720         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2721     req->u.esRequest->toKeep->supplDescription = 0;
2722     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2723         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2724
2725     str = ZOOM_options_get(p->options, "contact-name");
2726     req->u.esRequest->toKeep->contact->name = str ?
2727         nmem_strdup (p->odr_out->mem, str) : 0;
2728
2729     str = ZOOM_options_get(p->options, "contact-phone");
2730     req->u.esRequest->toKeep->contact->phone = str ?
2731         nmem_strdup (p->odr_out->mem, str) : 0;
2732
2733     str = ZOOM_options_get(p->options, "contact-email");
2734     req->u.esRequest->toKeep->contact->email = str ?
2735         nmem_strdup (p->odr_out->mem, str) : 0;
2736
2737     req->u.esRequest->toKeep->addlBilling = 0;
2738
2739     /* not to keep part ... */
2740     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2741         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2742
2743     str = ZOOM_options_get(p->options, "itemorder-setname");
2744     if (!str)
2745         str = "default";
2746
2747     if (!*str)
2748         req->u.esRequest->notToKeep->resultSetItem = 0;
2749     else
2750     {
2751         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2752            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2753
2754         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2755            nmem_strdup (p->odr_out->mem, str);
2756         req->u.esRequest->notToKeep->resultSetItem->item =
2757             (int *) odr_malloc(p->odr_out, sizeof(int));
2758
2759         str = ZOOM_options_get(p->options, "itemorder-item");
2760         *req->u.esRequest->notToKeep->resultSetItem->item =
2761             (str ? atoi(str) : 1);
2762     }
2763     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2764
2765     return req;
2766 }
2767
2768 Z_APDU *create_admin_package(ZOOM_package p, int type,
2769                              Z_ESAdminOriginPartToKeep **toKeepP,
2770                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2771 {
2772     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2773     if (apdu)
2774     {
2775         Z_ESAdminOriginPartToKeep  *toKeep;
2776         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2777         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2778         const char *first_db = "Default";
2779         int num_db;
2780         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2781         if (num_db > 0)
2782             first_db = db[0];
2783
2784         r->direct_reference =
2785             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2786                                    VAL_ADMINSERVICE);
2787         r->descriptor = 0;
2788         r->indirect_reference = 0;
2789         r->which = Z_External_ESAdmin;
2790
2791         r->u.adminService = (Z_Admin *)
2792             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2793         r->u.adminService->which = Z_Admin_esRequest;
2794         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2795             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2796
2797         toKeep = r->u.adminService->u.esRequest->toKeep =
2798             (Z_ESAdminOriginPartToKeep *)
2799             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2800         toKeep->which = type;
2801         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2802         toKeep->u.create = odr_nullval();
2803         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2804
2805         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2806             (Z_ESAdminOriginPartNotToKeep *)
2807             odr_malloc(p->odr_out,
2808                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2809         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2810         notToKeep->u.recordsWillFollow = odr_nullval();
2811         if (toKeepP)
2812             *toKeepP = toKeep;
2813         if (notToKeepP)
2814             *notToKeepP = notToKeep;
2815     }
2816     return apdu;
2817 }
2818
2819 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2820 {
2821     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2822     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2823     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2824     const char *doc = ZOOM_options_get(p->options, "doc");
2825
2826     if (!doc)
2827         doc = "";
2828
2829     req->taskSpecificParameters = ext;
2830     ext->direct_reference = req->packageType;
2831     ext->descriptor = 0;
2832     ext->indirect_reference = 0;
2833
2834     ext->which = Z_External_octet;
2835     ext->u.single_ASN1_type =
2836         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
2837                            strlen(doc));
2838     return apdu;
2839 }
2840
2841 static Z_APDU *create_update_package(ZOOM_package p)
2842 {
2843     Z_APDU *apdu = 0;
2844     const char *first_db = "Default";
2845     int num_db;
2846     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2847     const char *action = ZOOM_options_get(p->options, "action");
2848     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2849     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2850     const char *record_buf = ZOOM_options_get(p->options, "record");
2851     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2852     int syntax_oid = VAL_NONE;
2853     int action_no = -1;
2854
2855     if (syntax_str)
2856         syntax_oid = oid_getvalbyname(syntax_str);
2857     if (!record_buf)
2858     {
2859         record_buf = "void";
2860         syntax_oid = VAL_SUTRS;
2861     }
2862     if (syntax_oid == VAL_NONE)
2863         syntax_oid = VAL_TEXT_XML;
2864
2865     if (num_db > 0)
2866         first_db = db[0];
2867
2868     if (!action)
2869         action = "specialUpdate";
2870
2871     if (!strcmp(action, "recordInsert"))
2872         action_no = Z_IUOriginPartToKeep_recordInsert;
2873     else if (!strcmp(action, "recordReplace"))
2874         action_no = Z_IUOriginPartToKeep_recordReplace;
2875     else if (!strcmp(action, "recordDelete"))
2876         action_no = Z_IUOriginPartToKeep_recordDelete;
2877     else if (!strcmp(action, "elementUpdate"))
2878         action_no = Z_IUOriginPartToKeep_elementUpdate;
2879     else if (!strcmp(action, "specialUpdate"))
2880         action_no = Z_IUOriginPartToKeep_specialUpdate;
2881     else
2882         return 0;
2883
2884     apdu = create_es_package (p, VAL_DBUPDATE);
2885     if (apdu)
2886     {
2887         Z_IUOriginPartToKeep *toKeep;
2888         Z_IUSuppliedRecords *notToKeep;
2889         Z_External *r = (Z_External *)
2890             odr_malloc (p->odr_out, sizeof(*r));
2891
2892         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2893
2894         r->direct_reference =
2895             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2896                                    VAL_DBUPDATE);
2897         r->descriptor = 0;
2898         r->which = Z_External_update;
2899         r->indirect_reference = 0;
2900         r->u.update = (Z_IUUpdate *)
2901             odr_malloc(p->odr_out, sizeof(*r->u.update));
2902
2903         r->u.update->which = Z_IUUpdate_esRequest;
2904         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2905             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2906         toKeep = r->u.update->u.esRequest->toKeep =
2907             (Z_IUOriginPartToKeep *)
2908             odr_malloc(p->odr_out, sizeof(*toKeep));
2909
2910         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2911         toKeep->schema = 0;
2912         toKeep->elementSetName = 0;
2913         toKeep->actionQualifier = 0;
2914         toKeep->action = odr_intdup(p->odr_out, action_no);
2915
2916         notToKeep = r->u.update->u.esRequest->notToKeep =
2917             (Z_IUSuppliedRecords *)
2918             odr_malloc(p->odr_out, sizeof(*notToKeep));
2919         notToKeep->num = 1;
2920         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2921             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2922         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2923             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2924         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2925         if (recordIdOpaque)
2926         {
2927             notToKeep->elements[0]->u.opaque =
2928                 odr_create_Odr_oct(p->odr_out,
2929                                    (const unsigned char *) recordIdOpaque,
2930                                    strlen(recordIdOpaque));
2931         }
2932         else if (recordIdNumber)
2933         {
2934             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2935
2936             notToKeep->elements[0]->u.number =
2937                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2938         }
2939         else
2940             notToKeep->elements[0]->u.opaque = 0;
2941         notToKeep->elements[0]->supplementalId = 0;
2942         notToKeep->elements[0]->correlationInfo = 0;
2943         notToKeep->elements[0]->record =
2944             z_ext_record(p->odr_out, syntax_oid,
2945                          record_buf, strlen(record_buf));
2946     }
2947     if (0 && apdu)
2948     {
2949        ODR print = odr_createmem(ODR_PRINT);
2950
2951        z_APDU(print, &apdu, 0, 0);
2952        odr_destroy(print);
2953     }
2954     return apdu;
2955 }
2956
2957 ZOOM_API(void)
2958     ZOOM_package_send (ZOOM_package p, const char *type)
2959 {
2960     Z_APDU *apdu = 0;
2961     ZOOM_connection c;
2962     if (!p)
2963         return;
2964     c = p->connection;
2965     odr_reset (p->odr_out);
2966     xfree (p->buf_out);
2967     p->buf_out = 0;
2968     if (!strcmp(type, "itemorder"))
2969     {
2970         apdu = create_es_package (p, VAL_ITEMORDER);
2971         if (apdu)
2972         {
2973             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2974
2975             r->direct_reference =
2976                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2977                                        VAL_ITEMORDER);
2978             r->descriptor = 0;
2979             r->which = Z_External_itemOrder;
2980             r->indirect_reference = 0;
2981             r->u.itemOrder = encode_item_order (p);
2982
2983             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2984         }
2985     }
2986     else if (!strcmp(type, "create"))  /* create database */
2987     {
2988         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2989                                     0, 0);
2990     }
2991     else if (!strcmp(type, "drop"))  /* drop database */
2992     {
2993         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2994                                     0, 0);
2995     }
2996     else if (!strcmp(type, "commit"))  /* commit changes */
2997     {
2998         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
2999                                     0, 0);
3000     }
3001     else if (!strcmp(type, "update")) /* update record(s) */
3002     {
3003         apdu = create_update_package(p);
3004     }
3005     else if (!strcmp(type, "xmlupdate"))
3006     {
3007         apdu = create_xmlupdate_package(p);
3008     }
3009     if (apdu)
3010     {
3011         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3012         {
3013             char *buf;
3014
3015             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
3016             task->u.package = p;
3017             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3018             p->buf_out = (char *) xmalloc (p->len_out);
3019             memcpy (p->buf_out, buf, p->len_out);
3020
3021             (p->refcount)++;
3022             if (!c->async)
3023             {
3024                 while (ZOOM_event (1, &c))
3025                     ;
3026             }
3027         }
3028     }
3029 }
3030
3031 ZOOM_API(ZOOM_package)
3032     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
3033 {
3034     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
3035
3036     p->connection = c;
3037     p->odr_out = odr_createmem (ODR_ENCODE);
3038     p->options = ZOOM_options_create_with_parent2 (options, c->options);
3039     p->refcount = 1;
3040     p->buf_out = 0;
3041     p->len_out = 0;
3042     return p;
3043 }
3044
3045 ZOOM_API(void)
3046     ZOOM_package_destroy(ZOOM_package p)
3047 {
3048     if (!p)
3049         return;
3050     (p->refcount)--;
3051     if (p->refcount == 0)
3052     {
3053         odr_destroy (p->odr_out);
3054         xfree (p->buf_out);
3055
3056         ZOOM_options_destroy (p->options);
3057         xfree (p);
3058     }
3059 }
3060
3061 ZOOM_API(const char *)
3062 ZOOM_package_option_get (ZOOM_package p, const char *key)
3063 {
3064     return ZOOM_options_get (p->options, key);
3065 }
3066
3067
3068 ZOOM_API(void)
3069 ZOOM_package_option_set (ZOOM_package p, const char *key,
3070                               const char *val)
3071 {
3072     ZOOM_options_set (p->options, key, val);
3073 }
3074
3075 static int ZOOM_connection_exec_task (ZOOM_connection c)
3076 {
3077     ZOOM_task task = c->tasks;
3078     zoom_ret ret = zoom_complete;
3079
3080     if (!task)
3081         return 0;
3082     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3083              c, task->which, task->running);
3084     if (c->error != ZOOM_ERROR_NONE)
3085     {
3086         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3087                 "removing tasks because of error = %d", c, c->error);
3088         ZOOM_connection_remove_tasks (c);
3089         return 0;
3090     }
3091     if (task->running)
3092     {
3093         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3094                  "task already running", c);
3095         return 0;
3096     }
3097     task->running = 1;
3098     ret = zoom_complete;
3099     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3100     {
3101         switch (task->which)
3102         {
3103         case ZOOM_TASK_SEARCH:
3104             if (c->proto == PROTO_HTTP)
3105                 ret = ZOOM_connection_srw_send_search(c);
3106             else
3107                 ret = ZOOM_connection_send_search(c);
3108             break;
3109         case ZOOM_TASK_RETRIEVE:
3110             if (c->proto == PROTO_HTTP)
3111                 ret = ZOOM_connection_srw_send_search(c);
3112             else
3113                 ret = send_present (c);
3114             break;
3115         case ZOOM_TASK_CONNECT:
3116             ret = do_connect(c);
3117             break;
3118         case ZOOM_TASK_SCAN:
3119             ret = send_scan(c);
3120             break;
3121         case ZOOM_TASK_PACKAGE:
3122             ret = send_package(c);
3123             break;
3124         case ZOOM_TASK_SORT:
3125             c->tasks->u.sort.resultset->r_sort_spec =
3126                 c->tasks->u.sort.q->sort_spec;
3127             ret = send_sort(c, c->tasks->u.sort.resultset);
3128             break;
3129         }
3130     }
3131     else
3132     {
3133         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3134                 "remove tasks because no connection exist", c);
3135         ZOOM_connection_remove_tasks (c);
3136     }
3137     if (ret == zoom_complete)
3138     {
3139         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3140                  "task removed (complete)", c);
3141         ZOOM_connection_remove_task (c);
3142         return 0;
3143     }
3144     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3145             "task pending", c);
3146     return 1;
3147 }
3148
3149 static zoom_ret send_sort_present (ZOOM_connection c)
3150 {
3151     zoom_ret r = zoom_complete;
3152
3153     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3154         r = send_sort (c, c->tasks->u.search.resultset);
3155     if (r == zoom_complete)
3156         r = send_present (c);
3157     return r;
3158 }
3159
3160 static int es_response (ZOOM_connection c,
3161                         Z_ExtendedServicesResponse *res)
3162 {
3163     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3164         return 0;
3165     if (res->diagnostics && res->num_diagnostics > 0)
3166         response_diag(c, res->diagnostics[0]);
3167     if (res->taskPackage &&
3168         res->taskPackage->which == Z_External_extendedService)
3169     {
3170         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3171         Odr_oct *id = taskPackage->targetReference;
3172
3173         if (id)
3174             ZOOM_options_setl (c->tasks->u.package->options,
3175                                "targetReference", (char*) id->buf, id->len);
3176     }
3177     if (res->taskPackage &&
3178         res->taskPackage->which == Z_External_octet)
3179     {
3180         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3181         ZOOM_options_setl (c->tasks->u.package->options,
3182                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
3183     }
3184     return 1;
3185 }
3186
3187 static void interpret_init_diag(ZOOM_connection c,
3188                                 Z_DiagnosticFormat *diag)
3189 {
3190     if (diag->num > 0)
3191     {
3192         Z_DiagnosticFormat_s *ds = diag->elements[0];
3193         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3194             response_default_diag(c, ds->u.defaultDiagRec);
3195     }
3196 }
3197
3198
3199 static void interpret_otherinformation_field(ZOOM_connection c,
3200                                              Z_OtherInformation *ui)
3201 {
3202     int i;
3203     for (i = 0; i < ui->num_elements; i++)
3204     {
3205         Z_OtherInformationUnit *unit = ui->list[i];
3206         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3207             unit->information.externallyDefinedInfo &&
3208             unit->information.externallyDefinedInfo->which ==
3209             Z_External_diag1)
3210         {
3211             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3212         }
3213     }
3214 }
3215
3216 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3217 {
3218     Z_InitResponse *initrs;
3219
3220     c->mask = 0;
3221     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3222     switch(apdu->which)
3223     {
3224     case Z_APDU_initResponse:
3225         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3226         initrs = apdu->u.initResponse;
3227         ZOOM_connection_option_set(c, "serverImplementationId",
3228                                    initrs->implementationId ?
3229                                    initrs->implementationId : "");
3230         ZOOM_connection_option_set(c, "serverImplementationName",
3231                                    initrs->implementationName ?
3232                                    initrs->implementationName : "");
3233         ZOOM_connection_option_set(c, "serverImplementationVersion",
3234                                    initrs->implementationVersion ?
3235                                    initrs->implementationVersion : "");
3236         /* Set the three old options too, for old applications */
3237         ZOOM_connection_option_set(c, "targetImplementationId",
3238                                    initrs->implementationId ?
3239                                    initrs->implementationId : "");
3240         ZOOM_connection_option_set(c, "targetImplementationName",
3241                                    initrs->implementationName ?
3242                                    initrs->implementationName : "");
3243         ZOOM_connection_option_set(c, "targetImplementationVersion",
3244                                    initrs->implementationVersion ?
3245                                    initrs->implementationVersion : "");
3246         if (!*initrs->result)
3247         {
3248             Z_External *uif = initrs->userInformationField;
3249
3250             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3251
3252             if (uif && uif->which == Z_External_userInfo1)
3253                 interpret_otherinformation_field(c, uif->u.userInfo1);
3254         }
3255         else
3256         {
3257             char *cookie =
3258                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3259                                           VAL_COOKIE, 1, 0);
3260             xfree (c->cookie_in);
3261             c->cookie_in = 0;
3262             if (cookie)
3263                 c->cookie_in = xstrdup(cookie);
3264             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3265                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3266                 c->support_named_resultsets = 1;
3267             if (c->tasks)
3268             {
3269                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3270                 ZOOM_connection_remove_task (c);
3271             }
3272             ZOOM_connection_exec_task (c);
3273         }
3274         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3275         {
3276             NMEM tmpmem = nmem_create();
3277             Z_CharSetandLanguageNegotiation *p =
3278                 yaz_get_charneg_record(initrs->otherInfo);
3279
3280             if (p)
3281             {
3282                 char *charset = NULL, *lang = NULL;
3283                 int sel;
3284
3285                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3286                 yaz_log(log_details, "%p recv_apdu target accepted: "
3287                         "charset %s, language %s, select %d",
3288                         c,
3289                         charset ? charset : "none", lang ? lang : "none", sel);
3290                 if (charset)
3291                     ZOOM_connection_option_set (c, "negotiation-charset",
3292                                                 charset);
3293                 if (lang)
3294                     ZOOM_connection_option_set (c, "negotiation-lang",
3295                                                 lang);
3296
3297                 ZOOM_connection_option_set (
3298                     c,  "negotiation-charset-in-effect-for-records",
3299                     (sel != 0) ? "1" : "0");
3300                 nmem_destroy(tmpmem);
3301             }
3302         }
3303         break;
3304     case Z_APDU_searchResponse:
3305         yaz_log(log_api, "%p recv_apdu Search response", c);
3306         handle_search_response (c, apdu->u.searchResponse);
3307         if (send_sort_present (c) == zoom_complete)
3308             ZOOM_connection_remove_task (c);
3309         break;
3310     case Z_APDU_presentResponse:
3311         yaz_log(log_api, "%p recv_apdu Present response", c);
3312         handle_present_response (c, apdu->u.presentResponse);
3313         if (send_present (c) == zoom_complete)
3314             ZOOM_connection_remove_task (c);
3315         break;
3316     case Z_APDU_sortResponse:
3317         yaz_log(log_api, "%p recv_apdu Sort response", c);
3318         sort_response (c, apdu->u.sortResponse);
3319         if (send_present (c) == zoom_complete)
3320             ZOOM_connection_remove_task (c);
3321         break;
3322     case Z_APDU_scanResponse:
3323         yaz_log(log_api, "%p recv_apdu Scan response", c);
3324         scan_response (c, apdu->u.scanResponse);
3325         ZOOM_connection_remove_task (c);
3326         break;
3327     case Z_APDU_extendedServicesResponse:
3328         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3329         es_response (c, apdu->u.extendedServicesResponse);
3330         ZOOM_connection_remove_task (c);
3331         break;
3332     case Z_APDU_close:
3333         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3334         if (c->reconnect_ok)
3335         {
3336             do_close(c);
3337             c->tasks->running = 0;
3338             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3339         }
3340         else
3341         {
3342             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3343             do_close(c);
3344         }
3345         break;
3346     default:
3347         yaz_log(log_api, "%p Received unknown PDU", c);
3348         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3349         do_close(c);
3350     }
3351 }
3352
3353 #if HAVE_XML2
3354 static void handle_srw_response(ZOOM_connection c,
3355                                 Z_SRW_searchRetrieveResponse *res)
3356 {
3357     ZOOM_resultset resultset = 0;
3358     int i;
3359     NMEM nmem;
3360     ZOOM_Event event;
3361
3362     if (!c->tasks)
3363         return;
3364
3365     if (c->tasks->which == ZOOM_TASK_SEARCH)
3366         resultset = c->tasks->u.search.resultset;
3367     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3368         resultset = c->tasks->u.retrieve.resultset;
3369     else
3370         return ;
3371
3372     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3373     ZOOM_connection_put_event(c, event);
3374
3375     resultset->size = 0;
3376
3377     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3378
3379     if (res->numberOfRecords)
3380         resultset->size = *res->numberOfRecords;
3381
3382     for (i = 0; i<res->num_records; i++)
3383     {
3384         int pos;
3385
3386         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3387             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3388
3389         if (res->records[i].recordPosition &&
3390             *res->records[i].recordPosition > 0)
3391             pos = *res->records[i].recordPosition - 1;
3392         else
3393             pos = resultset->start + i;
3394
3395         npr->databaseName = 0;
3396         npr->which = Z_NamePlusRecord_databaseRecord;
3397         npr->u.databaseRecord = (Z_External *)
3398             odr_malloc(c->odr_in, sizeof(Z_External));
3399         npr->u.databaseRecord->descriptor = 0;
3400         npr->u.databaseRecord->direct_reference =
3401             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3402         npr->u.databaseRecord->which = Z_External_octet;
3403
3404         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3405             odr_malloc(c->odr_in, sizeof(Odr_oct));
3406         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3407             res->records[i].recordData_buf;
3408         npr->u.databaseRecord->u.octet_aligned->len =
3409             npr->u.databaseRecord->u.octet_aligned->size =
3410             res->records[i].recordData_len;
3411         record_cache_add (resultset, npr, pos);
3412     }
3413     if (res->num_diagnostics > 0)
3414     {
3415         const char *uri = res->diagnostics[0].uri;
3416         if (uri)
3417         {
3418             int code = 0;
3419             const char *cp;
3420             if ((cp = strrchr(uri, '/')))
3421                 code = atoi(cp+1);
3422             set_dset_error(c, code, uri,
3423                            res->diagnostics[0].details, 0);
3424         }
3425     }
3426     nmem = odr_extract_mem(c->odr_in);
3427     nmem_transfer(resultset->odr->mem, nmem);
3428     nmem_destroy(nmem);
3429 }
3430 #endif
3431
3432 #if HAVE_XML2
3433 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3434 {
3435     int ret = -1;
3436     const char *content_type = z_HTTP_header_lookup(hres->headers,
3437                                                     "Content-Type");
3438     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3439                                                        "Connection");
3440     c->mask = 0;
3441     yaz_log(log_details, "%p handle_http", c);
3442
3443     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3444     {
3445         Z_SOAP *soap_package = 0;
3446         ODR o = c->odr_in;
3447         Z_SOAP_Handler soap_handlers[2] = {
3448             {"http://www.loc.gov/zing/srw/", 0,
3449              (Z_SOAP_fun) yaz_srw_codec},
3450             {0, 0, 0}
3451         };
3452         ret = z_soap_codec(o, &soap_package,
3453                            &hres->content_buf, &hres->content_len,
3454                            soap_handlers);
3455         if (!ret && soap_package->which == Z_SOAP_generic &&
3456             soap_package->u.generic->no == 0)
3457         {
3458             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3459             if (sr->which == Z_SRW_searchRetrieve_response)
3460                 handle_srw_response(c, sr->u.response);
3461             else
3462                 ret = -1;
3463         }
3464         else if (!ret && (soap_package->which == Z_SOAP_fault
3465                           || soap_package->which == Z_SOAP_error))
3466         {
3467             set_HTTP_error(c, hres->code,
3468                            soap_package->u.fault->fault_code,
3469                            soap_package->u.fault->fault_string);
3470         }
3471         else
3472             ret = -1;
3473     }
3474     if (ret)
3475     {
3476         if (hres->code != 200)
3477             set_HTTP_error(c, hres->code, 0, 0);
3478         else
3479             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3480         do_close (c);
3481     }
3482     ZOOM_connection_remove_task(c);
3483     if (!strcmp(hres->version, "1.0"))
3484     {
3485         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3486         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3487             do_close(c);
3488     }
3489     else
3490     {
3491         /* HTTP 1.1: only if no close we stay alive .. */
3492         if (connection_head && !strcmp(connection_head, "close"))
3493             do_close(c);
3494     }
3495 }
3496 #endif
3497
3498 static int do_read (ZOOM_connection c)
3499 {
3500     int r, more;
3501     ZOOM_Event event;
3502
3503     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3504     ZOOM_connection_put_event (c, event);
3505
3506     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3507     more = cs_more(c->cs);
3508     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3509     if (r == 1)
3510         return 0;
3511     if (r <= 0)
3512     {
3513         if (c->reconnect_ok)
3514         {
3515             do_close (c);
3516             c->reconnect_ok = 0;
3517             yaz_log(log_details, "%p do_read reconnect read", c);
3518             c->tasks->running = 0;
3519             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3520         }
3521         else
3522         {
3523             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3524             do_close (c);
3525         }
3526     }
3527     else
3528     {
3529         Z_GDU *gdu;
3530         ZOOM_Event event;
3531
3532         odr_reset (c->odr_in);
3533         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3534         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3535         ZOOM_connection_put_event (c, event);
3536
3537         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3538         {
3539             int x;
3540             int err = odr_geterrorx(c->odr_in, &x);
3541             char msg[60];
3542             const char *element = odr_getelement(c->odr_in);
3543             sprintf (msg, "ODR code %d:%d element=%-20s",
3544                      err, x, element ? element : "<unknown>");
3545             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3546             do_close (c);
3547         }
3548         else if (gdu->which == Z_GDU_Z3950)
3549             recv_apdu (c, gdu->u.z3950);
3550         else if (gdu->which == Z_GDU_HTTP_Response)
3551         {
3552 #if HAVE_XML2
3553             handle_http (c, gdu->u.HTTP_Response);
3554 #else
3555             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3556             do_close (c);
3557 #endif
3558         }
3559         c->reconnect_ok = 0;
3560     }
3561     return 1;
3562 }
3563
3564 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3565 {
3566     int r;
3567     ZOOM_Event event;
3568
3569     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3570     ZOOM_connection_put_event (c, event);
3571
3572     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3573     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3574     {
3575         yaz_log(log_details, "%p do_write_ex write failed", c);
3576         if (c->reconnect_ok)
3577         {
3578             do_close (c);
3579             c->reconnect_ok = 0;
3580             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3581             c->tasks->running = 0;
3582             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3583             return zoom_pending;
3584         }
3585         if (c->state == STATE_CONNECTING)
3586             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3587         else
3588             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3589         do_close (c);
3590         return zoom_complete;
3591     }
3592     else if (r == 1)
3593     {
3594         c->mask = ZOOM_SELECT_EXCEPT;
3595         if (c->cs->io_pending & CS_WANT_WRITE)
3596             c->mask += ZOOM_SELECT_WRITE;
3597         if (c->cs->io_pending & CS_WANT_READ)
3598             c->mask += ZOOM_SELECT_READ;
3599         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3600                 c, c->mask);
3601     }
3602     else
3603     {
3604         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3605         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3606                 c, c->mask);
3607     }
3608     return zoom_pending;
3609 }
3610
3611 static zoom_ret do_write(ZOOM_connection c)
3612 {
3613     return do_write_ex (c, c->buf_out, c->len_out);
3614 }
3615
3616
3617 ZOOM_API(const char *)
3618 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3619 {
3620     return ZOOM_options_get (c->options, key);
3621 }
3622
3623 ZOOM_API(const char *)
3624 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp)
3625 {
3626     return ZOOM_options_getl (c->options, key, lenp);
3627 }
3628
3629 ZOOM_API(void)
3630 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3631                             const char *val)
3632 {
3633     ZOOM_options_set (c->options, key, val);
3634 }
3635
3636 ZOOM_API(void)
3637 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3638                              const char *val, int len)
3639 {
3640     ZOOM_options_setl (c->options, key, val, len);
3641 }
3642
3643 ZOOM_API(const char *)
3644 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3645 {
3646     return ZOOM_options_get (r->options, key);
3647 }
3648
3649 ZOOM_API(void)
3650 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3651                                   const char *val)
3652 {
3653     ZOOM_options_set (r->options, key, val);
3654 }
3655
3656
3657 ZOOM_API(int)
3658 ZOOM_connection_errcode (ZOOM_connection c)
3659 {
3660     return ZOOM_connection_error (c, 0, 0);
3661 }
3662
3663 ZOOM_API(const char *)
3664 ZOOM_connection_errmsg (ZOOM_connection c)
3665 {
3666     const char *msg;
3667     ZOOM_connection_error (c, &msg, 0);
3668     return msg;
3669 }
3670
3671 ZOOM_API(const char *)
3672 ZOOM_connection_addinfo (ZOOM_connection c)
3673 {
3674     const char *addinfo;
3675     ZOOM_connection_error (c, 0, &addinfo);
3676     return addinfo;
3677 }
3678
3679 ZOOM_API(const char *)
3680 ZOOM_connection_diagset (ZOOM_connection c)
3681 {
3682     const char *diagset;
3683     ZOOM_connection_error_x (c, 0, 0, &diagset);
3684     return diagset;
3685 }
3686
3687 ZOOM_API(const char *)
3688 ZOOM_diag_str (int error)
3689 {
3690     switch (error)
3691     {
3692     case ZOOM_ERROR_NONE:
3693         return "No error";
3694     case ZOOM_ERROR_CONNECT:
3695         return "Connect failed";
3696     case ZOOM_ERROR_MEMORY:
3697         return "Out of memory";
3698     case ZOOM_ERROR_ENCODE:
3699         return "Encoding failed";
3700     case ZOOM_ERROR_DECODE:
3701         return "Decoding failed";
3702     case ZOOM_ERROR_CONNECTION_LOST:
3703         return "Connection lost";
3704     case ZOOM_ERROR_INIT:
3705         return "Init rejected";
3706     case ZOOM_ERROR_INTERNAL:
3707         return "Internal failure";
3708     case ZOOM_ERROR_TIMEOUT:
3709         return "Timeout";
3710     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3711         return "Unsupported protocol";
3712     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3713         return "Unsupported query type";
3714     case ZOOM_ERROR_INVALID_QUERY:
3715         return "Invalid query";
3716     case ZOOM_ERROR_CQL_PARSE:
3717         return "CQL parsing error";
3718     case ZOOM_ERROR_CQL_TRANSFORM:
3719         return "CQL transformation error";
3720     default:
3721         return diagbib1_str (error);
3722     }
3723 }
3724
3725 ZOOM_API(int)
3726 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3727                          const char **addinfo, const char **diagset)
3728 {
3729     int error = c->error;
3730     if (cp)
3731     {
3732         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3733             *cp = ZOOM_diag_str(error);
3734         else if (!strcmp(c->diagset, "HTTP"))
3735             *cp = z_HTTP_errmsg(c->error);
3736         else if (!strcmp(c->diagset, "Bib-1"))
3737             *cp = ZOOM_diag_str(error);
3738         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3739             *cp = yaz_diag_srw_str(c->error);
3740         else
3741             *cp = "Unknown error and diagnostic set";
3742     }
3743     if (addinfo)
3744         *addinfo = c->addinfo ? c->addinfo : "";
3745     if (diagset)
3746         *diagset = c->diagset ? c->diagset : "";
3747     return c->error;
3748 }
3749
3750 ZOOM_API(int)
3751 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3752                        const char **addinfo)
3753 {
3754     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3755 }
3756
3757 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3758 {
3759     ZOOM_Event event = 0;
3760     int r = cs_look(c->cs);
3761     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3762              c, mask, r);
3763
3764     if (r == CS_NONE)
3765     {
3766         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3767         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3768         do_close (c);
3769         ZOOM_connection_put_event (c, event);
3770     }
3771     else if (r == CS_CONNECT)
3772     {
3773         int ret;
3774         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3775
3776         ret = cs_rcvconnect (c->cs);
3777         yaz_log(log_details, "%p ZOOM_connection_do_io "
3778                 "cs_rcvconnect returned %d", c, ret);
3779         if (ret == 1)
3780         {
3781             c->mask = ZOOM_SELECT_EXCEPT;
3782             if (c->cs->io_pending & CS_WANT_WRITE)
3783                 c->mask += ZOOM_SELECT_WRITE;
3784             if (c->cs->io_pending & CS_WANT_READ)
3785                 c->mask += ZOOM_SELECT_READ;
3786             ZOOM_connection_put_event (c, event);
3787         }
3788         else if (ret == 0)
3789         {
3790             ZOOM_connection_put_event (c, event);
3791             get_cert(c);
3792             if (c->proto == PROTO_Z3950)
3793                 ZOOM_connection_send_init(c);
3794             else
3795             {
3796                 /* no init request for SRW .. */
3797                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3798                 ZOOM_connection_remove_task (c);
3799                 c->mask = 0;
3800                 ZOOM_connection_exec_task (c);
3801             }
3802             c->state = STATE_ESTABLISHED;
3803         }
3804         else
3805         {
3806             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3807             do_close (c);
3808             ZOOM_connection_put_event (c, event);
3809         }
3810     }
3811     else
3812     {
3813         if (mask & ZOOM_SELECT_READ)
3814             do_read (c);
3815         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3816             do_write (c);
3817     }
3818     return 1;
3819 }
3820
3821 ZOOM_API(int)
3822 ZOOM_connection_last_event(ZOOM_connection cs)
3823 {
3824     if (!cs)
3825         return ZOOM_EVENT_NONE;
3826     return cs->last_event;
3827 }
3828
3829 ZOOM_API(int)
3830 ZOOM_event (int no, ZOOM_connection *cs)
3831 {
3832     int timeout = 30;      /* default timeout in seconds */
3833     int timeout_set = 0;   /* whether it was overriden at all */
3834 #if HAVE_SYS_POLL_H
3835     struct pollfd pollfds[1024];
3836     ZOOM_connection poll_cs[1024];
3837 #else
3838     struct timeval tv;
3839     fd_set input, output, except;
3840 #endif
3841     int i, r, nfds;
3842     int max_fd = 0;
3843
3844     for (i = 0; i<no; i++)
3845     {
3846         ZOOM_connection c = cs[i];
3847         ZOOM_Event event;
3848         if (c && (event = ZOOM_connection_get_event(c)))
3849         {
3850             ZOOM_Event_destroy (event);
3851             return i+1;
3852         }
3853     }
3854     for (i = 0; i<no; i++)
3855     {
3856         ZOOM_connection c = cs[i];
3857         ZOOM_Event event;
3858         if (c && ZOOM_connection_exec_task (c))
3859         {
3860             if ((event = ZOOM_connection_get_event(c)))
3861             {
3862                 ZOOM_Event_destroy (event);
3863                 return i+1;
3864             }
3865         }
3866     }
3867 #if HAVE_SYS_POLL_H
3868
3869 #else
3870     FD_ZERO (&input);
3871     FD_ZERO (&output);
3872     FD_ZERO (&except);
3873 #endif
3874     nfds = 0;
3875     for (i = 0; i<no; i++)
3876     {
3877         ZOOM_connection c = cs[i];
3878         int fd, mask;
3879         int this_timeout;
3880
3881         if (!c)
3882             continue;
3883         fd = z3950_connection_socket(c);
3884         mask = z3950_connection_mask(c);
3885
3886         if (fd == -1)
3887             continue;
3888         if (max_fd < fd)
3889             max_fd = fd;
3890
3891         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3892         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3893         if (this_timeout != -2)
3894         {
3895             /* ensure the minimum timeout is used */
3896             if (!timeout_set)
3897                 timeout = this_timeout;
3898             else if (this_timeout != -1 && this_timeout < timeout)
3899                 timeout = this_timeout;
3900             timeout_set = 1;
3901         }
3902 #if HAVE_SYS_POLL_H
3903         if (mask)
3904         {
3905             short poll_events = 0;
3906
3907             if (mask & ZOOM_SELECT_READ)
3908                 poll_events += POLLIN;
3909             if (mask & ZOOM_SELECT_WRITE)
3910                 poll_events += POLLOUT;
3911             if (mask & ZOOM_SELECT_EXCEPT)
3912                 poll_events += POLLERR;
3913             pollfds[nfds].fd = fd;
3914             pollfds[nfds].events = poll_events;
3915             pollfds[nfds].revents = 0;
3916             poll_cs[nfds] = c;
3917             nfds++;
3918         }
3919 #else
3920         if (mask & ZOOM_SELECT_READ)
3921         {
3922             FD_SET (fd, &input);
3923             nfds++;
3924         }
3925         if (mask & ZOOM_SELECT_WRITE)
3926         {
3927             FD_SET (fd, &output);
3928             nfds++;
3929         }
3930         if (mask & ZOOM_SELECT_EXCEPT)
3931         {
3932             FD_SET (fd, &except);
3933             nfds++;
3934         }
3935 #endif
3936     }
3937     if (!nfds)
3938         return 0;
3939
3940 #if HAVE_SYS_POLL_H
3941     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3942     for (i = 0; i<nfds; i++)
3943     {
3944         ZOOM_connection c = poll_cs[i];
3945         if (r && c->mask)
3946         {
3947             int mask = 0;
3948             if (pollfds[i].revents & POLLIN)
3949                 mask += ZOOM_SELECT_READ;
3950             if (pollfds[i].revents & POLLOUT)
3951                 mask += ZOOM_SELECT_WRITE;
3952             if (pollfds[i].revents & POLLERR)
3953                 mask += ZOOM_SELECT_EXCEPT;
3954             if (mask)
3955                 ZOOM_connection_do_io(c, mask);
3956         }
3957         else if (r == 0 && c->mask)
3958         {
3959             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3960             /* timeout and this connection was waiting */
3961             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3962             do_close (c);
3963             ZOOM_connection_put_event(c, event);
3964         }
3965     }
3966 #else
3967     tv.tv_sec = timeout;
3968     tv.tv_usec = 0;
3969     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
3970     for (i = 0; i<no; i++)
3971     {
3972         ZOOM_connection c = cs[i];
3973         int fd, mask;
3974
3975         if (!c)
3976             continue;
3977         fd = z3950_connection_socket(c);
3978         mask = 0;
3979         if (r && c->mask)
3980         {
3981             /* no timeout and real socket */
3982             if (FD_ISSET(fd, &input))
3983                 mask += ZOOM_SELECT_READ;
3984             if (FD_ISSET(fd, &output))
3985                 mask += ZOOM_SELECT_WRITE;
3986             if (FD_ISSET(fd, &except))
3987                 mask += ZOOM_SELECT_EXCEPT;
3988             if (mask)
3989                 ZOOM_connection_do_io(c, mask);
3990         }
3991         if (r == 0 && c->mask)
3992         {
3993             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3994             /* timeout and this connection was waiting */
3995             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3996             do_close (c);
3997             ZOOM_connection_put_event(c, event);
3998         }
3999     }
4000 #endif
4001     for (i = 0; i<no; i++)
4002     {
4003         ZOOM_connection c = cs[i];
4004         ZOOM_Event event;
4005         if (c && (event = ZOOM_connection_get_event(c)))
4006         {
4007             ZOOM_Event_destroy (event);
4008             return i+1;
4009         }
4010     }
4011     return 0;
4012 }
4013
4014
4015 /*
4016  * Returns an xmalloc()d string containing RPN that corresponds to the
4017  * CQL passed in.  On error, sets the Connection object's error state
4018  * and returns a null pointer.
4019  * ### We could cache CQL parser and/or transformer in Connection.
4020  */
4021 static char *cql2pqf(ZOOM_connection c, const char *cql)
4022 {
4023     CQL_parser parser;
4024     int error;
4025     struct cql_node *node;
4026     const char *cqlfile;
4027     static cql_transform_t trans;
4028     char pqfbuf[512];
4029
4030     parser = cql_parser_create();
4031     if ((error = cql_parser_string(parser, cql)) != 0) {
4032         cql_parser_destroy(parser);
4033         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4034         return 0;
4035     }
4036
4037     node = cql_parser_result(parser);
4038     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4039
4040     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4041     if (cqlfile == 0) {
4042         cql_parser_destroy(parser);
4043         cql_node_destroy(node);
4044         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4045         return 0;
4046     }
4047
4048     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4049         char buf[512];
4050         cql_parser_destroy(parser);
4051         cql_node_destroy(node);
4052         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4053                 cqlfile, strerror(errno));
4054         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4055         return 0;
4056     }
4057
4058     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4059     cql_parser_destroy(parser);
4060     cql_node_destroy(node);
4061     if (error != 0) {
4062         char buf[512];
4063         const char *addinfo;
4064         error = cql_transform_error(trans, &addinfo);
4065         cql_transform_close(trans);
4066         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4067         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4068         return 0;
4069     }
4070
4071     cql_transform_close(trans);
4072     return xstrdup(pqfbuf);
4073 }
4074
4075
4076 /*
4077  * Local variables:
4078  * c-basic-offset: 4
4079  * indent-tabs-mode: nil
4080  * End:
4081  * vim: shiftwidth=4 tabstop=8 expandtab
4082  */
4083