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 1.68 2006-04-07 11:27:24 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     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 638
 639     initlog();
 640
 641     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 642     r->refcount = 1;
 643     r->size = 0;
 644     r->odr = odr_createmem (ODR_ENCODE);
 645     r->start = 0;
 646     r->piggyback = 1;
 647     r->setname = 0;
 648     r->schema = 0;
 649     r->count = 0;
 650     r->step = 0;
 651     r->record_cache = 0;
 652     r->r_sort_spec = 0;
 653     r->query = 0;
 654     r->connection = 0;
 655     r->next = 0;
 656     return r;
 657 }
 658
 659 ZOOM_API(ZOOM_resultset)
 660 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 661 {
 662     ZOOM_resultset r;
 663     ZOOM_query s = ZOOM_query_create();
 664
 665     ZOOM_query_prefix (s, q);
 666
 667     r = ZOOM_connection_search (c, s);
 668     ZOOM_query_destroy (s);
 669     return r;
 670 }
 671
 672 ZOOM_API(ZOOM_resultset)
 673 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 674 {
 675     ZOOM_resultset r = ZOOM_resultset_create ();
 676     ZOOM_task task;
 677     const char *cp;
 678
 679     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 680     r->r_sort_spec = q->sort_spec;
 681     r->query = q;
 682
 683     r->options = ZOOM_options_create_with_parent(c->options);
 684
 685     r->start = ZOOM_options_get_int(r->options, "start", 0);
 686     r->count = ZOOM_options_get_int(r->options, "count", 0);
 687     {
 688         /* If "presentChunk" is defined use that; otherwise "step" */
 689         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 690         r->step = ZOOM_options_get_int(r->options,
 691                                        (cp != 0 ? "presentChunk": "step"), 0);
 692     }
 693     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 694     cp = ZOOM_options_get (r->options, "setname");
 695     if (cp)
 696         r->setname = xstrdup(cp);
 697     cp = ZOOM_options_get (r->options, "schema");
 698     if (cp)
 699         r->schema = xstrdup(cp);
 700
 701     r->connection = c;
 702
 703     r->next = c->resultsets;
 704     c->resultsets = r;
 705
 706     if (c->host_port && c->proto == PROTO_HTTP)
 707     {
 708         if (!c->cs)
 709         {
 710             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 711             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 712         }
 713         else
 714         {
 715             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 716             c->reconnect_ok = 1;
 717         }
 718     }
 719
 720     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 721     task->u.search.resultset = r;
 722     ZOOM_resultset_addref (r);
 723
 724     (q->refcount)++;
 725
 726     if (!c->async)
 727     {
 728         while (ZOOM_event (1, &c))
 729             ;
 730     }
 731     return r;
 732 }
 733
 734 /*
 735  * This is the old result-set sorting API, which is maintained only
 736  * for the sake of binary compatibility.  There is no reason ever to
 737  * use this rather than ZOOM_resultset_sort1().
 738  */
 739 ZOOM_API(void)
 740 ZOOM_resultset_sort(ZOOM_resultset r,
 741                     const char *sort_type, const char *sort_spec)
 742 {
 743     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 744 }
 745
 746 ZOOM_API(int)
 747 ZOOM_resultset_sort1(ZOOM_resultset r,
 748                      const char *sort_type, const char *sort_spec)
 749 {
 750     ZOOM_connection c = r->connection;
 751     ZOOM_task task;
 752     ZOOM_query newq;
 753
 754     newq = ZOOM_query_create();
 755     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 756         return -1;
 757
 758     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 759             r, r, sort_type, sort_spec);
 760     if (!c)
 761         return 0;
 762
 763     if (c->host_port && c->proto == PROTO_HTTP)
 764     {
 765         if (!c->cs)
 766         {
 767             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 768             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 769         }
 770         else
 771         {
 772             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 773                     r);
 774             c->reconnect_ok = 1;
 775         }
 776     }
 777
 778     ZOOM_resultset_cache_reset(r);
 779     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 780     task->u.sort.resultset = r;
 781     task->u.sort.q = newq;
 782
 783     ZOOM_resultset_addref (r);
 784
 785     if (!c->async)
 786     {
 787         while (ZOOM_event (1, &c))
 788             ;
 789     }
 790
 791     return 0;
 792 }
 793
 794 ZOOM_API(void)
 795     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 796 {
 797     ZOOM_record_cache rc;
 798
 799     for (rc = r->record_cache; rc; rc = rc->next)
 800     {
 801         if (rc->rec.wrbuf_marc)
 802             wrbuf_free (rc->rec.wrbuf_marc, 1);
 803         if (rc->rec.wrbuf_iconv)
 804             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 805         if (rc->rec.wrbuf_opac)
 806             wrbuf_free (rc->rec.wrbuf_opac, 1);
 807     }
 808     r->record_cache = 0;
 809 }
 810
 811 ZOOM_API(void)
 812 ZOOM_resultset_destroy(ZOOM_resultset r)
 813 {
 814     if (!r)
 815         return;
 816     (r->refcount)--;
 817     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 818             r, r, r->refcount);
 819     if (r->refcount == 0)
 820     {
 821         ZOOM_resultset_cache_reset(r);
 822
 823         if (r->connection)
 824         {
 825             /* remove ourselves from the resultsets in connection */
 826             ZOOM_resultset *rp = &r->connection->resultsets;
 827             while (1)
 828             {
 829                 assert (*rp);   /* we must be in this list!! */
 830                 if (*rp == r)
 831                 {   /* OK, we're here - take us out of it */
 832                     *rp = (*rp)->next;
 833                     break;
 834                 }
 835                 rp = &(*rp)->next;
 836             }
 837         }
 838         ZOOM_query_destroy (r->query);
 839         ZOOM_options_destroy (r->options);
 840         odr_destroy (r->odr);
 841         xfree (r->setname);
 842         xfree (r->schema);
 843         xfree (r);
 844     }
 845 }
 846
 847 ZOOM_API(size_t)
 848 ZOOM_resultset_size (ZOOM_resultset r)
 849 {
 850     return r->size;
 851 }
 852
 853 static void do_close (ZOOM_connection c)
 854 {
 855     if (c->cs)
 856         cs_close(c->cs);
 857     c->cs = 0;
 858     c->mask = 0;
 859     c->state = STATE_IDLE;
 860 }
 861
 862 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 863                                      int force_sync, int start, int count)
 864 {
 865     ZOOM_task task;
 866     ZOOM_connection c;
 867     const char *cp;
 868
 869     if (!r)
 870         return;
 871     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 872             " count=%d", r, force_sync, start, count);
 873     c = r->connection;
 874     if (!c)
 875         return;
 876
 877     if (c->host_port && c->proto == PROTO_HTTP)
 878     {
 879         if (!c->cs)
 880         {
 881             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 882             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 883         }
 884         else
 885         {
 886             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 887                     "reconnect", r);
 888             c->reconnect_ok = 1;
 889         }
 890     }
 891     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 892     task->u.retrieve.resultset = r;
 893     task->u.retrieve.start = start;
 894     task->u.retrieve.count = count;
 895
 896     cp = ZOOM_options_get (r->options, "schema");
 897     if (cp)
 898     {
 899         if (!r->schema || strcmp(r->schema, cp))
 900         {
 901             xfree(r->schema);
 902             r->schema = xstrdup(cp);
 903         }
 904     }
 905
 906     ZOOM_resultset_addref (r);
 907
 908     if (!r->connection->async || force_sync)
 909         while (r->connection && ZOOM_event (1, &r->connection))
 910             ;
 911 }
 912
 913 ZOOM_API(void)
 914 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 915                         size_t start, size_t count)
 916 {
 917     int force_present = 0;
 918
 919     if (!r)
 920         return ;
 921     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%d count=%d",
 922             r, r, start, count);
 923     if (count && recs)
 924         force_present = 1;
 925     ZOOM_resultset_retrieve (r, force_present, start, count);
 926     if (force_present)
 927     {
 928         size_t i;
 929         for (i = 0; i< count; i++)
 930             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 931     }
 932 }
 933
 934 static void get_cert(ZOOM_connection c)
 935 {
 936     char *cert_buf;
 937     int cert_len;
 938
 939     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 940     {
 941         ZOOM_connection_option_setl(c, "sslPeerCert",
 942                                     cert_buf, cert_len);
 943         xfree(cert_buf);
 944     }
 945 }
 946
 947 static zoom_ret do_connect (ZOOM_connection c)
 948 {
 949     void *add;
 950     const char *effective_host;
 951
 952     if (c->proxy)
 953         effective_host = c->proxy;
 954     else
 955         effective_host = c->host_port;
 956
 957     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
 958
 959     if (c->cs)
 960         cs_close(c->cs);
 961     c->cs = cs_create_host (effective_host, 0, &add);
 962
 963     if (c->cs && c->cs->protocol == PROTO_HTTP)
 964     {
 965 #if HAVE_XML2
 966         const char *path = 0;
 967
 968         c->proto = PROTO_HTTP;
 969         cs_get_host_args(c->host_port, &path);
 970         xfree(c->path);
 971         c->path = (char*) xmalloc(strlen(path)+2);
 972         c->path[0] = '/';
 973         strcpy (c->path+1, path);
 974 #else
 975         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 976         do_close(c);
 977         return zoom_complete;
 978 #endif
 979     }
 980     if (c->cs)
 981     {
 982         int ret = cs_connect (c->cs, add);
 983         if (ret == 0)
 984         {
 985             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 986             ZOOM_connection_put_event(c, event);
 987             get_cert(c);
 988             if (c->proto == PROTO_Z3950)
 989                 ZOOM_connection_send_init(c);
 990             else
 991             {
 992                 /* no init request for SRW .. */
 993                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 994                 ZOOM_connection_remove_task (c);
 995                 c->mask = 0;
 996                 ZOOM_connection_exec_task (c);
 997             }
 998             c->state = STATE_ESTABLISHED;
 999             return zoom_pending;
1000         }
1001         else if (ret > 0)
1002         {
1003             c->state = STATE_CONNECTING;
1004             c->mask = ZOOM_SELECT_EXCEPT;
1005             if (c->cs->io_pending & CS_WANT_WRITE)
1006                 c->mask += ZOOM_SELECT_WRITE;
1007             if (c->cs->io_pending & CS_WANT_READ)
1008                 c->mask += ZOOM_SELECT_READ;
1009             return zoom_pending;
1010         }
1011     }
1012     c->state = STATE_IDLE;
1013     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1014     return zoom_complete;
1015 }
1016
1017 int z3950_connection_socket(ZOOM_connection c)
1018 {
1019     if (c->cs)
1020         return cs_fileno(c->cs);
1021     return -1;
1022 }
1023
1024 int z3950_connection_mask(ZOOM_connection c)
1025 {
1026     if (c->cs)
1027         return c->mask;
1028     return 0;
1029 }
1030
1031 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
1032 {
1033     int i;
1034     for (i = 0; i<200; i++)
1035     {
1036         size_t len;
1037         Z_OtherInformation **oi;
1038         char buf[80];
1039         const char *val;
1040         const char *cp;
1041         int oidval;
1042
1043         sprintf (buf, "otherInfo%d", i);
1044         val = ZOOM_options_get (c->options, buf);
1045         if (!val)
1046             break;
1047         cp = strchr(val, ':');
1048         if (!cp)
1049             continue;
1050         len = cp - val;
1051         if (len >= sizeof(buf))
1052             len = sizeof(buf)-1;
1053         memcpy (buf, val, len);
1054         buf[len] = '\0';
1055         oidval = oid_getvalbyname (buf);
1056         if (oidval == VAL_NONE)
1057             continue;
1058
1059         yaz_oi_APDU(a, &oi);
1060         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1061     }
1062 }
1063
1064 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1065 {
1066     assert (a);
1067     if (c->cookie_out)
1068     {
1069         Z_OtherInformation **oi;
1070         yaz_oi_APDU(a, &oi);
1071         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1072     }
1073     if (c->client_IP)
1074     {
1075         Z_OtherInformation **oi;
1076         yaz_oi_APDU(a, &oi);
1077         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1078     }
1079     otherInfo_attach (c, a, out);
1080     if (!z_APDU(out, &a, 0, 0))
1081     {
1082         FILE *outf = fopen("/tmp/apdu.txt", "a");
1083         if (a && outf)
1084         {
1085             ODR odr_pr = odr_createmem(ODR_PRINT);
1086             fprintf (outf, "a=%p\n", a);
1087             odr_setprint(odr_pr, outf);
1088             z_APDU(odr_pr, &a, 0, 0);
1089             odr_destroy(odr_pr);
1090         }
1091         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1092         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1093         odr_reset(out);
1094         return -1;
1095     }
1096     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1097     return 0;
1098 }
1099
1100 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
1101 {
1102     ZOOM_Event event;
1103     assert (a);
1104     if (encode_APDU(c, a, c->odr_out))
1105         return zoom_complete;
1106     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1107     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1108     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1109     ZOOM_connection_put_event (c, event);
1110     odr_reset(c->odr_out);
1111     return do_write (c);
1112 }
1113
1114 /* returns 1 if PDU was sent OK (still pending )
1115            0 if PDU was not sent OK (nothing to wait for)
1116 */
1117
1118 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1119 {
1120     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1121     Z_InitRequest *ireq = apdu->u.initRequest;
1122     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1123         odr_malloc(c->odr_out, sizeof(*auth));
1124     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1125     const char *auth_userId = ZOOM_options_get (c->options, "user");
1126     const char *auth_password = ZOOM_options_get (c->options, "password");
1127     char *version;
1128
1129     /* support the pass for backwards compatibility */
1130     if (!auth_password)
1131         auth_password = ZOOM_options_get (c->options, "pass");
1132
1133     ODR_MASK_SET(ireq->options, Z_Options_search);
1134     ODR_MASK_SET(ireq->options, Z_Options_present);
1135     ODR_MASK_SET(ireq->options, Z_Options_scan);
1136     ODR_MASK_SET(ireq->options, Z_Options_sort);
1137     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1138     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1139
1140     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1141     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1142     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1143
1144     /* Index Data's Z39.50 Implementor Id is 81 */
1145     ireq->implementationId = odr_prepend(c->odr_out,
1146         ZOOM_options_get(c->options, "implementationId"),
1147         odr_prepend(c->odr_out, "81", ireq->implementationId));
1148
1149     ireq->implementationName = odr_prepend(c->odr_out,
1150         ZOOM_options_get(c->options, "implementationName"),
1151         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1152
1153     version = odr_strdup(c->odr_out, "$Revision: 1.68 $");
1154     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1155         version[strlen(version)-2] = '\0';
1156     ireq->implementationVersion = odr_prepend(c->odr_out,
1157         ZOOM_options_get(c->options, "implementationVersion"),
1158         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1159
1160     *ireq->maximumRecordSize =
1161         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1162     *ireq->preferredMessageSize =
1163         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1164
1165     if (auth_groupId || auth_password)
1166     {
1167         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1168         int i = 0;
1169         pass->groupId = 0;
1170         if (auth_groupId && *auth_groupId)
1171         {
1172             pass->groupId = (char *)
1173                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1174             strcpy(pass->groupId, auth_groupId);
1175             i++;
1176         }
1177         pass->userId = 0;
1178         if (auth_userId && *auth_userId)
1179         {
1180             pass->userId = (char *)
1181                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1182             strcpy(pass->userId, auth_userId);
1183             i++;
1184         }
1185         pass->password = 0;
1186         if (auth_password && *auth_password)
1187         {
1188             pass->password = (char *)
1189                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1190             strcpy(pass->password, auth_password);
1191             i++;
1192         }
1193         if (i)
1194         {
1195             auth->which = Z_IdAuthentication_idPass;
1196             auth->u.idPass = pass;
1197             ireq->idAuthentication = auth;
1198         }
1199     }
1200     else if (auth_userId)
1201     {
1202         auth->which = Z_IdAuthentication_open;
1203         auth->u.open = (char *)
1204             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1205         strcpy(auth->u.open, auth_userId);
1206         ireq->idAuthentication = auth;
1207     }
1208     if (c->proxy)
1209         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1210                                  VAL_PROXY, 1, c->host_port);
1211     if (c->charset || c->lang)
1212     {
1213         Z_OtherInformation **oi;
1214         Z_OtherInformationUnit *oi_unit;
1215
1216         yaz_oi_APDU(apdu, &oi);
1217
1218         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1219         {
1220             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1221             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1222             oi_unit->information.externallyDefinedInfo =
1223                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1224                                               c->charset, c->lang, 1);
1225         }
1226     }
1227     assert (apdu);
1228     return send_APDU (c, apdu);
1229 }
1230
1231 #if HAVE_XML2
1232 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1233 {
1234     Z_SOAP_Handler h[2] = {
1235         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1236         {0, 0, 0}
1237     };
1238     ODR o = odr_createmem(ODR_ENCODE);
1239     int ret;
1240     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1241     Z_GDU *gdu;
1242     ZOOM_Event event;
1243
1244     gdu = z_get_HTTP_Request(c->odr_out);
1245     gdu->u.HTTP_Request->path = c->path;
1246
1247     if (c->host_port)
1248     {
1249         const char *cp0 = strstr(c->host_port, "://");
1250         const char *cp1 = 0;
1251         if (cp0)
1252             cp0 = cp0+3;
1253         else
1254             cp0 = c->host_port;
1255
1256         cp1 = strchr(cp0, '/');
1257         if (!cp1)
1258             cp1 = cp0+strlen(cp0);
1259
1260         if (cp0 && cp1)
1261         {
1262             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1263             memcpy (h, cp0, cp1 - cp0);
1264             h[cp1-cp0] = '\0';
1265             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1266                               "Host", h);
1267         }
1268     }
1269
1270     if (c->sru_mode == zoom_sru_get)
1271     {
1272         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1273     }
1274     else if (c->sru_mode == zoom_sru_post)
1275     {
1276         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1277     }
1278     else if (c->sru_mode == zoom_sru_soap)
1279     {
1280         z_HTTP_header_add_content_type(c->odr_out,
1281                                        &gdu->u.HTTP_Request->headers,
1282                                        "text/xml", c->charset);
1283
1284         z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1285                           "SOAPAction", "\"\"");
1286         p->which = Z_SOAP_generic;
1287         p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1288         p->u.generic->no = 0;
1289         p->u.generic->ns = 0;
1290         p->u.generic->p = sr;
1291         p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1292
1293         ret = z_soap_codec_enc(o, &p,
1294                                &gdu->u.HTTP_Request->content_buf,
1295                                &gdu->u.HTTP_Request->content_len, h,
1296                                c->charset);
1297
1298     }
1299     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1300         return zoom_complete;
1301     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1302     odr_destroy(o);
1303
1304     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1305     ZOOM_connection_put_event (c, event);
1306     odr_reset(c->odr_out);
1307     return do_write (c);
1308 }
1309 #endif
1310
1311 #if HAVE_XML2
1312 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1313 {
1314     int i;
1315     ZOOM_resultset resultset = 0;
1316     Z_SRW_PDU *sr = 0;
1317     const char *recordPacking = 0;
1318
1319     if (c->error)                  /* don't continue on error */
1320         return zoom_complete;
1321     assert (c->tasks);
1322     if (c->tasks->which == ZOOM_TASK_SEARCH)
1323     {
1324         resultset = c->tasks->u.search.resultset;
1325         resultset->setname = xstrdup ("default");
1326         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1327     }
1328     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1329     {
1330         resultset = c->tasks->u.retrieve.resultset;
1331
1332         resultset->start = c->tasks->u.retrieve.start;
1333         resultset->count = c->tasks->u.retrieve.count;
1334
1335         if (resultset->start >= resultset->size)
1336             return zoom_complete;
1337         if (resultset->start + resultset->count > resultset->size)
1338             resultset->count = resultset->size - resultset->start;
1339
1340         for (i = 0; i<resultset->count; i++)
1341         {
1342             ZOOM_record rec =
1343                 record_cache_lookup (resultset, i + resultset->start);
1344             if (!rec)
1345                 break;
1346         }
1347         if (i == resultset->count)
1348             return zoom_complete;
1349     }
1350     assert(resultset->query);
1351
1352     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1353
1354     if (resultset->query->z_query->which == Z_Query_type_104
1355         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1356     {
1357
1358         sr->u.request->query_type = Z_SRW_query_type_cql;
1359         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1360     }
1361     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1362              resultset->query->z_query->u.type_1)
1363     {
1364         sr->u.request->query_type = Z_SRW_query_type_pqf;
1365         sr->u.request->query.pqf = resultset->query->query_string;
1366     }
1367     else
1368     {
1369         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1370         return zoom_complete;
1371     }
1372     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1373     sr->u.request->maximumRecords = odr_intdup (
1374         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1375     sr->u.request->recordSchema = resultset->schema;
1376
1377     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1378
1379     if (recordPacking)
1380         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1381
1382     return send_srw(c, sr);
1383 }
1384 #else
1385 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1386 {
1387     return zoom_complete;
1388 }
1389 #endif
1390
1391 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1392 {
1393     ZOOM_resultset r;
1394     int lslb, ssub, mspn;
1395     const char *syntax;
1396     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1397     Z_SearchRequest *search_req = apdu->u.searchRequest;
1398     const char *elementSetName;
1399     const char *smallSetElementSetName;
1400     const char *mediumSetElementSetName;
1401
1402     assert (c->tasks);
1403     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1404
1405     r = c->tasks->u.search.resultset;
1406
1407     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1408
1409     elementSetName =
1410         ZOOM_options_get (r->options, "elementSetName");
1411     smallSetElementSetName  =
1412         ZOOM_options_get (r->options, "smallSetElementSetName");
1413     mediumSetElementSetName =
1414         ZOOM_options_get (r->options, "mediumSetElementSetName");
1415
1416     if (!smallSetElementSetName)
1417         smallSetElementSetName = elementSetName;
1418
1419     if (!mediumSetElementSetName)
1420         mediumSetElementSetName = elementSetName;
1421
1422     assert (r);
1423     assert (r->query);
1424
1425     /* prepare query for the search request */
1426     search_req->query = r->query->z_query;
1427     if (!search_req->query)
1428     {
1429         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1430         return zoom_complete;
1431     }
1432
1433     search_req->databaseNames =
1434         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1435
1436     /* get syntax (no need to provide unless piggyback is in effect) */
1437     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1438
1439     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1440     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1441     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1442     if (lslb != -1 && ssub != -1 && mspn != -1)
1443     {
1444         /* So're a Z39.50 expert? Let's hope you don't do sort */
1445         *search_req->largeSetLowerBound = lslb;
1446         *search_req->smallSetUpperBound = ssub;
1447         *search_req->mediumSetPresentNumber = mspn;
1448     }
1449     else if (r->start == 0 && r->count > 0
1450              && r->piggyback && !r->r_sort_spec && !r->schema)
1451     {
1452         /* Regular piggyback - do it unless we're going to do sort */
1453         *search_req->largeSetLowerBound = 2000000000;
1454         *search_req->smallSetUpperBound = 1;
1455         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1456     }
1457     else
1458     {
1459         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1460         smallSetElementSetName = 0;
1461         mediumSetElementSetName = 0;
1462         syntax = 0;
1463     }
1464     if (smallSetElementSetName && *smallSetElementSetName)
1465     {
1466         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1467             odr_malloc (c->odr_out, sizeof(*esn));
1468
1469         esn->which = Z_ElementSetNames_generic;
1470         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1471         search_req->smallSetElementSetNames = esn;
1472     }
1473     if (mediumSetElementSetName && *mediumSetElementSetName)
1474     {
1475         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1476             odr_malloc (c->odr_out, sizeof(*esn));
1477
1478         esn->which = Z_ElementSetNames_generic;
1479         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1480         search_req->mediumSetElementSetNames = esn;
1481     }
1482     if (syntax)
1483         search_req->preferredRecordSyntax =
1484             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1485
1486     if (!r->setname)
1487     {
1488         if (c->support_named_resultsets)
1489         {
1490             char setname[14];
1491             int ord;
1492             /* find the lowest unused ordinal so that we re-use
1493                result sets on the server. */
1494             for (ord = 1; ; ord++)
1495             {
1496                 ZOOM_resultset rp;
1497                 sprintf (setname, "%d", ord);
1498                 for (rp = c->resultsets; rp; rp = rp->next)
1499                     if (rp->setname && !strcmp (rp->setname, setname))
1500                         break;
1501                 if (!rp)
1502                     break;
1503             }
1504             r->setname = xstrdup (setname);
1505             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1506                     "set %s", c, r->setname);
1507         }
1508         else
1509         {
1510             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1511                     "default set", c);
1512             r->setname = xstrdup ("default");
1513         }
1514         ZOOM_options_set (r->options, "setname", r->setname);
1515     }
1516     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1517     return send_APDU (c, apdu);
1518 }
1519
1520 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1521 {
1522     int oclass;
1523     char *addinfo = 0;
1524
1525     switch (r->which)
1526     {
1527     case Z_DefaultDiagFormat_v2Addinfo:
1528         addinfo = r->u.v2Addinfo;
1529         break;
1530     case Z_DefaultDiagFormat_v3Addinfo:
1531         addinfo = r->u.v3Addinfo;
1532         break;
1533     }
1534     xfree (c->addinfo);
1535     c->addinfo = 0;
1536     set_dset_error(c, *r->condition,
1537                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1538                    addinfo, 0);
1539 }
1540
1541 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1542 {
1543     if (p->which != Z_DiagRec_defaultFormat)
1544         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1545     else
1546         response_default_diag(c, p->u.defaultFormat);
1547 }
1548
1549 ZOOM_API(ZOOM_record)
1550 ZOOM_record_clone (ZOOM_record srec)
1551 {
1552     char *buf;
1553     int size;
1554     ODR odr_enc;
1555     ZOOM_record nrec;
1556
1557     odr_enc = odr_createmem(ODR_ENCODE);
1558     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1559         return 0;
1560     buf = odr_getbuf (odr_enc, &size, 0);
1561
1562     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1563     nrec->odr = odr_createmem(ODR_DECODE);
1564     nrec->wrbuf_marc = 0;
1565     nrec->wrbuf_iconv = 0;
1566     nrec->wrbuf_opac = 0;
1567     odr_setbuf (nrec->odr, buf, size, 0);
1568     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1569
1570     odr_destroy (odr_enc);
1571     return nrec;
1572 }
1573
1574 ZOOM_API(ZOOM_record)
1575 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1576 {
1577     return record_cache_lookup (s, pos);
1578 }
1579
1580 ZOOM_API(ZOOM_record)
1581 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1582 {
1583     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1584
1585     if (!rec)
1586     {
1587         ZOOM_resultset_retrieve (r, 1, pos, 1);
1588         rec = ZOOM_resultset_record_immediate (r, pos);
1589     }
1590     return rec;
1591 }
1592
1593 ZOOM_API(void)
1594 ZOOM_record_destroy (ZOOM_record rec)
1595 {
1596     if (!rec)
1597         return;
1598     if (rec->wrbuf_marc)
1599         wrbuf_free (rec->wrbuf_marc, 1);
1600     if (rec->wrbuf_iconv)
1601         wrbuf_free (rec->wrbuf_iconv, 1);
1602     if (rec->wrbuf_opac)
1603         wrbuf_free (rec->wrbuf_opac, 1);
1604     odr_destroy (rec->odr);
1605     xfree (rec);
1606 }
1607
1608 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1609                                      int *len,
1610                                      const char *buf, int sz,
1611                                      const char *record_charset)
1612 {
1613     char to[40];
1614     char from[40];
1615     yaz_iconv_t cd = 0;
1616     yaz_marc_t mt = yaz_marc_create();
1617
1618     *from = '\0';
1619     strcpy(to, "UTF-8");
1620     if (record_charset && *record_charset)
1621     {
1622         /* Use "from,to" or just "from" */
1623         const char *cp = strchr(record_charset, ',');
1624         int clen = strlen(record_charset);
1625         if (cp && cp[1])
1626         {
1627             strncpy( to, cp+1, sizeof(to)-1);
1628             to[sizeof(to)-1] = '\0';
1629             clen = cp - record_charset;
1630         }
1631         if (clen > sizeof(from)-1)
1632             clen = sizeof(from)-1;
1633
1634         if (clen)
1635             strncpy(from, record_charset, clen);
1636         from[clen] = '\0';
1637     }
1638
1639     if (*from && *to)
1640     {
1641         cd = yaz_iconv_open(to, from);
1642         yaz_marc_iconv(mt, cd);
1643     }
1644
1645     yaz_marc_xml(mt, marc_type);
1646     if (!rec->wrbuf_marc)
1647         rec->wrbuf_marc = wrbuf_alloc();
1648     wrbuf_rewind (rec->wrbuf_marc);
1649     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1650     {
1651         yaz_marc_destroy(mt);
1652         if (cd)
1653             yaz_iconv_close(cd);
1654         if (len)
1655             *len = wrbuf_len(rec->wrbuf_marc);
1656         return wrbuf_buf(rec->wrbuf_marc);
1657     }
1658     yaz_marc_destroy(mt);
1659     if (cd)
1660         yaz_iconv_close(cd);
1661     return 0;
1662 }
1663
1664 static const char *record_iconv_return(ZOOM_record rec, int *len,
1665                                        const char *buf, int sz,
1666                                        const char *record_charset)
1667 {
1668     char to[40];
1669     char from[40];
1670     yaz_iconv_t cd = 0;
1671
1672     *from = '\0';
1673     strcpy(to, "UTF-8");
1674     if (record_charset && *record_charset)
1675     {
1676         /* Use "from,to" or just "from" */
1677         const char *cp = strchr(record_charset, ',');
1678         int clen = strlen(record_charset);
1679         if (cp && cp[1])
1680         {
1681             strncpy( to, cp+1, sizeof(to)-1);
1682             to[sizeof(to)-1] = '\0';
1683             clen = cp - record_charset;
1684         }
1685         if (clen > sizeof(from)-1)
1686             clen = sizeof(from)-1;
1687
1688         if (clen)
1689             strncpy(from, record_charset, clen);
1690         from[clen] = '\0';
1691     }
1692
1693     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1694     {
1695         char outbuf[12];
1696         size_t inbytesleft = sz;
1697         const char *inp = buf;
1698
1699         if (!rec->wrbuf_iconv)
1700             rec->wrbuf_iconv = wrbuf_alloc();
1701
1702         wrbuf_rewind(rec->wrbuf_iconv);
1703
1704         while (inbytesleft)
1705         {
1706             size_t outbytesleft = sizeof(outbuf);
1707             char *outp = outbuf;
1708             size_t r = yaz_iconv (cd, (char**) &inp,
1709                                   &inbytesleft,
1710                                   &outp, &outbytesleft);
1711             if (r == (size_t) (-1))
1712             {
1713                 int e = yaz_iconv_error(cd);
1714                 if (e != YAZ_ICONV_E2BIG)
1715                     break;
1716             }
1717             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1718         }
1719         wrbuf_puts(rec->wrbuf_iconv, "");
1720         buf = wrbuf_buf(rec->wrbuf_iconv);
1721         sz = wrbuf_len(rec->wrbuf_iconv);
1722         yaz_iconv_close(cd);
1723     }
1724     if (len)
1725         *len = sz;
1726     return buf;
1727 }
1728
1729 ZOOM_API(const char *)
1730 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1731 {
1732     char type[40];
1733     char charset[40];
1734     char xpath[512];
1735     const char *cp;
1736     int i;
1737     Z_NamePlusRecord *npr;
1738
1739     if (len)
1740         *len = 0; /* default return */
1741
1742     if (!rec)
1743         return 0;
1744     npr = rec->npr;
1745     if (!npr)
1746         return 0;
1747
1748     cp = type_spec;
1749     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1750     {
1751         if (cp[i] == ';' || cp[i] == ' ')
1752             break;
1753         type[i] = cp[i];
1754     }
1755     type[i] = '\0';
1756     charset[0] = '\0';
1757     while (type_spec[i] == ';')
1758     {
1759         i++;
1760         while (type_spec[i] == ' ')
1761             i++;
1762         if (!strncmp(type_spec+i, "charset=", 8))
1763         {
1764             int j = 0;
1765             i = i + 8; /* skip charset= */
1766             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1767             {
1768                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1769                     break;
1770                 charset[j] = cp[i];
1771             }
1772             charset[j] = '\0';
1773         }
1774         else if (!strncmp(type_spec+i, "xpath=", 6))
1775         {
1776             int j = 0;
1777             i = i + 6;
1778             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1779                 xpath[j] = cp[i];
1780             xpath[j] = '\0';
1781         }
1782         while (type_spec[i] == ' ')
1783             i++;
1784     }
1785     if (!strcmp (type, "database"))
1786     {
1787         if (len)
1788             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1789         return npr->databaseName;
1790     }
1791     else if (!strcmp (type, "syntax"))
1792     {
1793         const char *desc = 0;
1794         if (npr->which == Z_NamePlusRecord_databaseRecord)
1795         {
1796             Z_External *r = (Z_External *) npr->u.databaseRecord;
1797             oident *ent = oid_getentbyoid(r->direct_reference);
1798             if (ent)
1799                 desc = ent->desc;
1800         }
1801         if (!desc)
1802             desc = "none";
1803         if (len)
1804             *len = strlen(desc);
1805         return desc;
1806     }
1807     if (npr->which != Z_NamePlusRecord_databaseRecord)
1808         return 0;
1809
1810     /* from now on - we have a database record .. */
1811     if (!strcmp (type, "render"))
1812     {
1813         Z_External *r = (Z_External *) npr->u.databaseRecord;
1814         oident *ent = oid_getentbyoid(r->direct_reference);
1815
1816         /* render bibliographic record .. */
1817         if (r->which == Z_External_OPAC)
1818         {
1819             r = r->u.opac->bibliographicRecord;
1820             if (!r)
1821                 return 0;
1822             ent = oid_getentbyoid(r->direct_reference);
1823         }
1824         if (r->which == Z_External_sutrs)
1825             return record_iconv_return(rec, len,
1826                                        (char*) r->u.sutrs->buf,
1827                                        r->u.sutrs->len,
1828                                        charset);
1829         else if (r->which == Z_External_octet)
1830         {
1831             const char *ret_buf;
1832             switch (ent->value)
1833             {
1834             case VAL_SOIF:
1835             case VAL_HTML:
1836             case VAL_SUTRS:
1837                 break;
1838             case VAL_TEXT_XML:
1839             case VAL_APPLICATION_XML:
1840                 break;
1841             default:
1842                 ret_buf = marc_iconv_return(
1843                     rec, YAZ_MARC_LINE, len,
1844                     (const char *) r->u.octet_aligned->buf,
1845                     r->u.octet_aligned->len,
1846                     charset);
1847                 if (ret_buf)
1848                     return ret_buf;
1849             }
1850             return record_iconv_return(rec, len,
1851                                        (const char *) r->u.octet_aligned->buf,
1852                                        r->u.octet_aligned->len,
1853                                        charset);
1854         }
1855         else if (r->which == Z_External_grs1)
1856         {
1857             if (!rec->wrbuf_marc)
1858                 rec->wrbuf_marc = wrbuf_alloc();
1859             wrbuf_rewind (rec->wrbuf_marc);
1860             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1861             return record_iconv_return(rec, len,
1862                                        wrbuf_buf(rec->wrbuf_marc),
1863                                        wrbuf_len(rec->wrbuf_marc),
1864                                        charset);
1865         }
1866         return 0;
1867     }
1868     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1869     {
1870         Z_External *r = (Z_External *) npr->u.databaseRecord;
1871         oident *ent = oid_getentbyoid(r->direct_reference);
1872
1873         /* render bibliographic record .. */
1874         if (r->which == Z_External_OPAC)
1875         {
1876             r = r->u.opac->bibliographicRecord;
1877             if (!r)
1878                 return 0;
1879             ent = oid_getentbyoid(r->direct_reference);
1880         }
1881
1882         if (r->which == Z_External_sutrs)
1883             return record_iconv_return(rec, len,
1884                                        (const char *) r->u.sutrs->buf,
1885                                        r->u.sutrs->len,
1886                                        charset);
1887         else if (r->which == Z_External_octet)
1888         {
1889             const char *ret_buf;
1890             int marc_decode_type = YAZ_MARC_MARCXML;
1891
1892             if (!strcmp(type, "oai"))
1893                 marc_decode_type = YAZ_MARC_OAIMARC;
1894             switch (ent->value)
1895             {
1896             case VAL_SOIF:
1897             case VAL_HTML:
1898             case VAL_SUTRS:
1899                 break;
1900             case VAL_TEXT_XML:
1901             case VAL_APPLICATION_XML:
1902                 break;
1903             default:
1904                 ret_buf = marc_iconv_return(
1905                     rec, marc_decode_type, len,
1906                     (const char *) r->u.octet_aligned->buf,
1907                     r->u.octet_aligned->len,
1908                     charset);
1909                 if (ret_buf)
1910                     return ret_buf;
1911             }
1912             return record_iconv_return(rec, len,
1913                                        (const char *) r->u.octet_aligned->buf,
1914                                        r->u.octet_aligned->len,
1915                                        charset);
1916         }
1917         else if (r->which == Z_External_grs1)
1918         {
1919             if (len) *len = 5;
1920             return "GRS-1";
1921         }
1922         return 0;
1923     }
1924     else if (!strcmp (type, "raw"))
1925     {
1926         Z_External *r = (Z_External *) npr->u.databaseRecord;
1927
1928         if (r->which == Z_External_sutrs)
1929         {
1930             if (len) *len = r->u.sutrs->len;
1931             return (const char *) r->u.sutrs->buf;
1932         }
1933         else if (r->which == Z_External_octet)
1934         {
1935             if (len) *len = r->u.octet_aligned->len;
1936             return (const char *) r->u.octet_aligned->buf;
1937         }
1938         else /* grs-1, explain, OPAC, ... */
1939         {
1940             if (len) *len = -1;
1941             return (const char *) npr->u.databaseRecord;
1942         }
1943         return 0;
1944     }
1945     else if (!strcmp (type, "ext"))
1946     {
1947         if (len) *len = -1;
1948         return (const char *) npr->u.databaseRecord;
1949     }
1950     else if (!strcmp (type, "opac"))
1951
1952     {
1953         Z_External *r = (Z_External *) npr->u.databaseRecord;
1954         if (r->which == Z_External_OPAC)
1955         {
1956             if (!rec->wrbuf_opac)
1957                 rec->wrbuf_opac = wrbuf_alloc();
1958             wrbuf_rewind (rec->wrbuf_opac);
1959             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1960             return record_iconv_return(rec, len,
1961                                        wrbuf_buf(rec->wrbuf_opac),
1962                                        wrbuf_len(rec->wrbuf_opac),
1963                                        charset);
1964         }
1965     }
1966     return 0;
1967 }
1968
1969 static int strcmp_null(const char *v1, const char *v2)
1970 {
1971     if (!v1 && !v2)
1972         return 0;
1973     if (!v1 || !v2)
1974         return -1;
1975     return strcmp(v1, v2);
1976 }
1977
1978 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1979                               int pos)
1980 {
1981     ZOOM_record_cache rc;
1982     const char *elementSetName =
1983         ZOOM_resultset_option_get (r, "elementSetName");
1984     const char *syntax =
1985         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1986
1987     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1988     ZOOM_connection_put_event(r->connection, event);
1989
1990     for (rc = r->record_cache; rc; rc = rc->next)
1991     {
1992         if (pos == rc->pos)
1993         {
1994             if (strcmp_null(r->schema, rc->schema))
1995                 continue;
1996             if (strcmp_null(elementSetName,rc->elementSetName))
1997                 continue;
1998             if (strcmp_null(syntax, rc->syntax))
1999                 continue;
2000             /* not destroying rc->npr (it's handled by nmem )*/
2001             rc->rec.npr = npr;
2002             /* keeping wrbuf_marc too */
2003             return;
2004         }
2005     }
2006     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
2007     rc->rec.npr = npr;
2008     rc->rec.odr = 0;
2009     rc->rec.wrbuf_marc = 0;
2010     rc->rec.wrbuf_iconv = 0;
2011     rc->rec.wrbuf_opac = 0;
2012     if (elementSetName)
2013         rc->elementSetName = odr_strdup (r->odr, elementSetName);
2014     else
2015         rc->elementSetName = 0;
2016
2017     if (syntax)
2018         rc->syntax = odr_strdup (r->odr, syntax);
2019     else
2020         rc->syntax = 0;
2021
2022     if (r->schema)
2023         rc->schema = odr_strdup (r->odr, r->schema);
2024     else
2025         rc->schema = 0;
2026
2027     rc->pos = pos;
2028     rc->next = r->record_cache;
2029     r->record_cache = rc;
2030 }
2031
2032 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
2033 {
2034     ZOOM_record_cache rc;
2035     const char *elementSetName =
2036         ZOOM_resultset_option_get (r, "elementSetName");
2037     const char *syntax =
2038         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2039
2040     for (rc = r->record_cache; rc; rc = rc->next)
2041     {
2042         if (pos == rc->pos)
2043         {
2044             if (strcmp_null(r->schema, rc->schema))
2045                 continue;
2046             if (strcmp_null(elementSetName,rc->elementSetName))
2047                 continue;
2048             if (strcmp_null(syntax, rc->syntax))
2049                 continue;
2050             return &rc->rec;
2051         }
2052     }
2053     return 0;
2054 }
2055
2056 static void handle_records (ZOOM_connection c, Z_Records *sr,
2057                             int present_phase)
2058 {
2059     ZOOM_resultset resultset;
2060
2061     if (!c->tasks)
2062         return ;
2063     switch (c->tasks->which)
2064     {
2065     case ZOOM_TASK_SEARCH:
2066         resultset = c->tasks->u.search.resultset;
2067         break;
2068     case ZOOM_TASK_RETRIEVE:
2069         resultset = c->tasks->u.retrieve.resultset;
2070         break;
2071     default:
2072         return;
2073     }
2074     if (sr && sr->which == Z_Records_NSD)
2075         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2076     else if (sr && sr->which == Z_Records_multipleNSD)
2077     {
2078         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2079             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2080         else
2081             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2082     }
2083     else
2084     {
2085         if (resultset->count + resultset->start > resultset->size)
2086             resultset->count = resultset->size - resultset->start;
2087         if (resultset->count < 0)
2088             resultset->count = 0;
2089         if (sr && sr->which == Z_Records_DBOSD)
2090         {
2091             int i;
2092             NMEM nmem = odr_extract_mem (c->odr_in);
2093             Z_NamePlusRecordList *p =
2094                 sr->u.databaseOrSurDiagnostics;
2095             for (i = 0; i<p->num_records; i++)
2096             {
2097                 record_cache_add (resultset, p->records[i],
2098                                   i+ resultset->start);
2099             }
2100             /* transfer our response to search_nmem .. we need it later */
2101             nmem_transfer (resultset->odr->mem, nmem);
2102             nmem_destroy (nmem);
2103             if (present_phase && p->num_records == 0)
2104             {
2105                 /* present response and we didn't get any records! */
2106                 Z_NamePlusRecord *myrec =
2107                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2108                 record_cache_add(resultset, myrec, resultset->start);
2109             }
2110         }
2111         else if (present_phase)
2112         {
2113             /* present response and we didn't get any records! */
2114             Z_NamePlusRecord *myrec =
2115                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2116             record_cache_add(resultset, myrec, resultset->start);
2117         }
2118     }
2119 }
2120
2121 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2122 {
2123     handle_records (c, pr->records, 1);
2124 }
2125
2126 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2127                                        Z_Term *term)
2128 {
2129     switch (term->which)
2130     {
2131     case Z_Term_general:
2132         ZOOM_options_setl(opt, name,
2133                           (const char *)(term->u.general->buf),
2134                           term->u.general->len);
2135         break;
2136     case Z_Term_characterString:
2137         ZOOM_options_set(opt, name, term->u.characterString);
2138         break;
2139     case Z_Term_numeric:
2140         ZOOM_options_set_int(opt, name, *term->u.numeric);
2141         break;
2142     }
2143 }
2144
2145 static void handle_queryExpression(ZOOM_options opt, const char *name,
2146                                    Z_QueryExpression *exp)
2147 {
2148     char opt_name[80];
2149
2150     switch (exp->which)
2151     {
2152     case Z_QueryExpression_term:
2153         if (exp->u.term && exp->u.term->queryTerm)
2154         {
2155             sprintf(opt_name, "%s.term", name);
2156             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2157         }
2158         break;
2159     case Z_QueryExpression_query:
2160         break;
2161     }
2162 }
2163
2164 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2165                                 Z_OtherInformation *o)
2166 {
2167     int i;
2168     for (i = 0; o && i < o->num_elements; i++)
2169     {
2170         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2171         {
2172             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2173
2174             if (ext->which == Z_External_searchResult1)
2175             {
2176                 int j;
2177                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2178
2179                 if (sr->num)
2180                     ZOOM_options_set_int(
2181                         resultset->options, "searchresult.size", sr->num);
2182
2183                 for (j = 0; j < sr->num; j++)
2184                 {
2185                     Z_SearchInfoReport_s *ent =
2186                         ext->u.searchResult1->elements[j];
2187                     char pref[80];
2188
2189                     sprintf(pref, "searchresult.%d", j);
2190
2191                     if (ent->subqueryId)
2192                     {
2193                         char opt_name[80];
2194                         sprintf(opt_name, "%s.id", pref);
2195                         ZOOM_options_set(resultset->options, opt_name,
2196                                          ent->subqueryId);
2197                     }
2198                     if (ent->subqueryExpression)
2199                     {
2200                         char opt_name[80];
2201                         sprintf(opt_name, "%s.subquery", pref);
2202                         handle_queryExpression(resultset->options, opt_name,
2203                                                ent->subqueryExpression);
2204                     }
2205                     if (ent->subqueryInterpretation)
2206                     {
2207                         char opt_name[80];
2208                         sprintf(opt_name, "%s.interpretation", pref);
2209                         handle_queryExpression(resultset->options, opt_name,
2210                                                ent->subqueryInterpretation);
2211                     }
2212                     if (ent->subqueryRecommendation)
2213                     {
2214                         char opt_name[80];
2215                         sprintf(opt_name, "%s.recommendation", pref);
2216                         handle_queryExpression(resultset->options, opt_name,
2217                                                ent->subqueryRecommendation);
2218                     }
2219                     if (ent->subqueryCount)
2220                     {
2221                         char opt_name[80];
2222                         sprintf(opt_name, "%s.count", pref);
2223                         ZOOM_options_set_int(resultset->options, opt_name,
2224                                              *ent->subqueryCount);
2225                     }
2226                 }
2227             }
2228         }
2229     }
2230 }
2231
2232 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2233 {
2234     ZOOM_resultset resultset;
2235     ZOOM_Event event;
2236
2237     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2238         return ;
2239
2240     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2241     ZOOM_connection_put_event(c, event);
2242
2243     resultset = c->tasks->u.search.resultset;
2244
2245     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2246
2247     resultset->size = *sr->resultCount;
2248     handle_records (c, sr->records, 0);
2249 }
2250
2251 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2252 {
2253     if (res->diagnostics && res->num_diagnostics > 0)
2254         response_diag (c, res->diagnostics[0]);
2255 }
2256
2257 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2258 {
2259     NMEM nmem = odr_extract_mem (c->odr_in);
2260     ZOOM_scanset scan;
2261
2262     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2263         return 0;
2264     scan = c->tasks->u.scan.scan;
2265
2266     if (res->entries && res->entries->nonsurrogateDiagnostics)
2267         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2268     scan->scan_response = res;
2269     nmem_transfer (scan->odr->mem, nmem);
2270     if (res->stepSize)
2271         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2272     if (res->positionOfTerm)
2273         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2274     if (res->scanStatus)
2275         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2276     if (res->numberOfEntriesReturned)
2277         ZOOM_options_set_int (scan->options, "number",
2278                               *res->numberOfEntriesReturned);
2279     nmem_destroy (nmem);
2280     return 1;
2281 }
2282
2283 static zoom_ret send_sort (ZOOM_connection c,
2284                            ZOOM_resultset resultset)
2285 {
2286     if (c->error)
2287         resultset->r_sort_spec = 0;
2288     if (resultset->r_sort_spec)
2289     {
2290         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2291         Z_SortRequest *req = apdu->u.sortRequest;
2292
2293         req->num_inputResultSetNames = 1;
2294         req->inputResultSetNames = (Z_InternationalString **)
2295             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2296         req->inputResultSetNames[0] =
2297             odr_strdup (c->odr_out, resultset->setname);
2298         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2299         req->sortSequence = resultset->r_sort_spec;
2300         resultset->r_sort_spec = 0;
2301         return send_APDU (c, apdu);
2302     }
2303     return zoom_complete;
2304 }
2305
2306 static zoom_ret send_present(ZOOM_connection c)
2307 {
2308     Z_APDU *apdu = 0;
2309     Z_PresentRequest *req = 0;
2310     int i = 0;
2311     const char *syntax = 0;
2312     const char *elementSetName = 0;
2313     ZOOM_resultset  resultset;
2314
2315     if (!c->tasks)
2316     {
2317         yaz_log(log_details, "%p send_present no tasks", c);
2318         return zoom_complete;
2319     }
2320     switch (c->tasks->which)
2321     {
2322     case ZOOM_TASK_SEARCH:
2323         resultset = c->tasks->u.search.resultset;
2324         break;
2325     case ZOOM_TASK_RETRIEVE:
2326         resultset = c->tasks->u.retrieve.resultset;
2327         resultset->start = c->tasks->u.retrieve.start;
2328         resultset->count = c->tasks->u.retrieve.count;
2329
2330         if (resultset->start >= resultset->size)
2331         {
2332             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2333                     c, resultset->start, resultset->size);
2334             return zoom_complete;
2335         }
2336         if (resultset->start + resultset->count > resultset->size)
2337             resultset->count = resultset->size - resultset->start;
2338         break;
2339     default:
2340         return zoom_complete;
2341     }
2342     yaz_log(log_details, "%p send_present start=%d count=%d",
2343             c, resultset->start, resultset->count);
2344
2345     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2346     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2347
2348     if (c->error)                  /* don't continue on error */
2349         return zoom_complete;
2350     if (resultset->start < 0)
2351         return zoom_complete;
2352     for (i = 0; i<resultset->count; i++)
2353     {
2354         ZOOM_record rec =
2355             record_cache_lookup (resultset, i + resultset->start);
2356         if (!rec)
2357             break;
2358     }
2359     if (i == resultset->count)
2360     {
2361         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2362         return zoom_complete;
2363     }
2364
2365     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2366     req = apdu->u.presentRequest;
2367
2368     resultset->start += i;
2369     resultset->count -= i;
2370
2371     if (i)
2372         yaz_log(log_details, "%p send_present skip=%d", c, i);
2373
2374     *req->resultSetStartPoint = resultset->start + 1;
2375     *req->numberOfRecordsRequested = resultset->step>0 ?
2376         resultset->step : resultset->count;
2377     if (*req->numberOfRecordsRequested + resultset->start > resultset->size)
2378         *req->numberOfRecordsRequested = resultset->size -  resultset->start;
2379     assert (*req->numberOfRecordsRequested > 0);
2380
2381     if (syntax && *syntax)
2382         req->preferredRecordSyntax =
2383             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2384
2385     if (resultset->schema && *resultset->schema)
2386     {
2387         Z_RecordComposition *compo = (Z_RecordComposition *)
2388             odr_malloc (c->odr_out, sizeof(*compo));
2389
2390         req->recordComposition = compo;
2391         compo->which = Z_RecordComp_complex;
2392         compo->u.complex = (Z_CompSpec *)
2393             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2394         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2395             odr_malloc(c->odr_out, sizeof(bool_t));
2396         *compo->u.complex->selectAlternativeSyntax = 0;
2397
2398         compo->u.complex->generic = (Z_Specification *)
2399             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2400
2401         compo->u.complex->generic->which = Z_Schema_oid;
2402         compo->u.complex->generic->schema.oid = (Odr_oid *)
2403             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2404
2405         if (!compo->u.complex->generic->schema.oid)
2406         {
2407             /* OID wasn't a schema! Try record syntax instead. */
2408
2409             compo->u.complex->generic->schema.oid = (Odr_oid *)
2410                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2411         }
2412         if (elementSetName && *elementSetName)
2413         {
2414             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2415                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2416             compo->u.complex->generic->elementSpec->which =
2417                 Z_ElementSpec_elementSetName;
2418             compo->u.complex->generic->elementSpec->u.elementSetName =
2419                 odr_strdup (c->odr_out, elementSetName);
2420         }
2421         else
2422             compo->u.complex->generic->elementSpec = 0;
2423         compo->u.complex->num_dbSpecific = 0;
2424         compo->u.complex->dbSpecific = 0;
2425         compo->u.complex->num_recordSyntax = 0;
2426         compo->u.complex->recordSyntax = 0;
2427     }
2428     else if (elementSetName && *elementSetName)
2429     {
2430         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2431             odr_malloc (c->odr_out, sizeof(*esn));
2432         Z_RecordComposition *compo = (Z_RecordComposition *)
2433             odr_malloc (c->odr_out, sizeof(*compo));
2434
2435         esn->which = Z_ElementSetNames_generic;
2436         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2437         compo->which = Z_RecordComp_simple;
2438         compo->u.simple = esn;
2439         req->recordComposition = compo;
2440     }
2441     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2442     return send_APDU (c, apdu);
2443 }
2444
2445 ZOOM_API(ZOOM_scanset)
2446 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2447 {
2448     ZOOM_scanset s;
2449     ZOOM_query q = ZOOM_query_create();
2450
2451     ZOOM_query_prefix (q, start);
2452
2453     s = ZOOM_connection_scan1(c, q);
2454     ZOOM_query_destroy (q);
2455     return s;
2456
2457 }
2458
2459 ZOOM_API(ZOOM_scanset)
2460 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query q)
2461 {
2462     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2463     char *start;
2464     char *freeme = 0;
2465
2466     scan->connection = c;
2467     scan->odr = odr_createmem (ODR_DECODE);
2468     scan->options = ZOOM_options_create_with_parent (c->options);
2469     scan->refcount = 1;
2470     scan->scan_response = 0;
2471
2472     /*
2473      * We need to check the query-type, so we can recognise CQL and
2474      * compile it into a form that we can use here.  The ZOOM_query
2475      * structure has no explicit `type' member, but inspection of the
2476      * ZOOM_query_prefix() and ZOOM_query_cql() functions shows how
2477      * the structure is set up in each case.
2478      */
2479
2480     if (q->z_query->which == Z_Query_type_1) {
2481         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2482                 c, q, q->query_string);
2483         start = q->query_string;
2484     } else if (q->z_query->which == Z_Query_type_104) {
2485         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2486                 c, q, q->query_string);
2487         start = freeme = cql2pqf(c, q->query_string);
2488         if (start == 0)
2489             return 0;
2490     } else {
2491         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2492                 c, q, q->query_string);
2493         abort();
2494     }
2495
2496     scan->termListAndStartPoint =
2497         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2498     xfree (freeme);
2499     if (scan->termListAndStartPoint != 0)
2500     {
2501         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2502         task->u.scan.scan = scan;
2503
2504         (scan->refcount)++;
2505         if (!c->async)
2506         {
2507             while (ZOOM_event (1, &c))
2508                 ;
2509         }
2510     }
2511     return scan;
2512 }
2513
2514 ZOOM_API(void)
2515 ZOOM_scanset_destroy (ZOOM_scanset scan)
2516 {
2517     if (!scan)
2518         return;
2519     (scan->refcount)--;
2520     if (scan->refcount == 0)
2521     {
2522         odr_destroy (scan->odr);
2523
2524         ZOOM_options_destroy (scan->options);
2525         xfree (scan);
2526     }
2527 }
2528
2529 static zoom_ret send_package (ZOOM_connection c)
2530 {
2531     ZOOM_Event event;
2532
2533     yaz_log(log_details, "%p send_package", c);
2534     if (!c->tasks)
2535         return zoom_complete;
2536     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2537
2538     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2539     ZOOM_connection_put_event (c, event);
2540
2541     return do_write_ex (c, c->tasks->u.package->buf_out,
2542                         c->tasks->u.package->len_out);
2543 }
2544
2545 static zoom_ret send_scan (ZOOM_connection c)
2546 {
2547     ZOOM_scanset scan;
2548     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2549     Z_ScanRequest *req = apdu->u.scanRequest;
2550
2551     yaz_log(log_details, "%p send_scan", c);
2552     if (!c->tasks)
2553         return zoom_complete;
2554     assert (c->tasks->which == ZOOM_TASK_SCAN);
2555     scan = c->tasks->u.scan.scan;
2556
2557     req->termListAndStartPoint = scan->termListAndStartPoint;
2558     req->attributeSet = scan->attributeSet;
2559
2560     *req->numberOfTermsRequested =
2561         ZOOM_options_get_int(scan->options, "number", 10);
2562
2563     req->preferredPositionInResponse =
2564         odr_intdup (c->odr_out,
2565                     ZOOM_options_get_int(scan->options, "position", 1));
2566
2567     req->stepSize =
2568         odr_intdup (c->odr_out,
2569                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2570
2571     req->databaseNames = set_DatabaseNames (c, scan->options,
2572                                             &req->num_databaseNames);
2573
2574     return send_APDU (c, apdu);
2575 }
2576
2577 ZOOM_API(size_t)
2578 ZOOM_scanset_size (ZOOM_scanset scan)
2579 {
2580     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2581         return 0;
2582     return scan->scan_response->entries->num_entries;
2583 }
2584
2585 ZOOM_API(const char *)
2586 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2587                    int *occ, int *len)
2588 {
2589     const char *term = 0;
2590     size_t noent = ZOOM_scanset_size (scan);
2591     Z_ScanResponse *res = scan->scan_response;
2592
2593     *len = 0;
2594     *occ = 0;
2595     if (pos >= noent)
2596         return 0;
2597     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2598     {
2599         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2600
2601         if (t->term->which == Z_Term_general)
2602         {
2603             term = (const char *) t->term->u.general->buf;
2604             *len = t->term->u.general->len;
2605         }
2606         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2607     }
2608     return term;
2609 }
2610
2611 ZOOM_API(const char *)
2612 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2613                            int *occ, int *len)
2614 {
2615     const char *term = 0;
2616     size_t noent = ZOOM_scanset_size (scan);
2617     Z_ScanResponse *res = scan->scan_response;
2618
2619     *len = 0;
2620     *occ = 0;
2621     if (pos >= noent)
2622         return 0;
2623     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2624     {
2625         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2626
2627         if (t->displayTerm)
2628         {
2629             term = t->displayTerm;
2630             *len = strlen(term);
2631         }
2632         else if (t->term->which == Z_Term_general)
2633         {
2634             term = (const char *) t->term->u.general->buf;
2635             *len = t->term->u.general->len;
2636         }
2637         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2638     }
2639     return term;
2640 }
2641
2642 ZOOM_API(const char *)
2643 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2644 {
2645     return ZOOM_options_get (scan->options, key);
2646 }
2647
2648 ZOOM_API(void)
2649 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2650                               const char *val)
2651 {
2652     ZOOM_options_set (scan->options, key, val);
2653 }
2654
2655 static Z_APDU *create_es_package (ZOOM_package p, int type)
2656 {
2657     const char *str;
2658     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2659     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2660
2661     *req->function = Z_ExtendedServicesRequest_create;
2662
2663     str = ZOOM_options_get(p->options, "package-name");
2664     if (str && *str)
2665         req->packageName = nmem_strdup (p->odr_out->mem, str);
2666
2667     str = ZOOM_options_get(p->options, "user-id");
2668     if (str)
2669         req->userId = nmem_strdup (p->odr_out->mem, str);
2670
2671     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2672                                               type);
2673
2674     str = ZOOM_options_get(p->options, "function");
2675     if (str)
2676     {
2677         if (!strcmp (str, "create"))
2678             *req->function = 1;
2679         if (!strcmp (str, "delete"))
2680             *req->function = 2;
2681         if (!strcmp (str, "modify"))
2682             *req->function = 3;
2683     }
2684     return apdu;
2685 }
2686
2687 static const char *ill_array_lookup (void *clientData, const char *idx)
2688 {
2689     ZOOM_package p = (ZOOM_package) clientData;
2690     return ZOOM_options_get (p->options, idx+4);
2691 }
2692
2693 static Z_External *encode_ill_request (ZOOM_package p)
2694 {
2695     ODR out = p->odr_out;
2696     ILL_Request *req;
2697     Z_External *r = 0;
2698     struct ill_get_ctl ctl;
2699
2700     ctl.odr = p->odr_out;
2701     ctl.clientData = p;
2702     ctl.f = ill_array_lookup;
2703
2704     req = ill_get_ILLRequest(&ctl, "ill", 0);
2705
2706     if (!ill_Request (out, &req, 0, 0))
2707     {
2708         int ill_request_size;
2709         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2710         if (ill_request_buf)
2711             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2712         return 0;
2713     }
2714     else
2715     {
2716         oident oid;
2717         int illRequest_size = 0;
2718         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2719
2720         oid.proto = PROTO_GENERAL;
2721         oid.oclass = CLASS_GENERAL;
2722         oid.value = VAL_ISO_ILL_1;
2723
2724         r = (Z_External *) odr_malloc (out, sizeof(*r));
2725         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2726         r->indirect_reference = 0;
2727         r->descriptor = 0;
2728         r->which = Z_External_single;
2729
2730         r->u.single_ASN1_type =
2731             odr_create_Odr_oct(out,
2732                                (unsigned char *)illRequest_buf,
2733                                illRequest_size);
2734     }
2735     return r;
2736 }
2737
2738 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2739 {
2740     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2741     const char *str;
2742
2743     req->which = Z_IOItemOrder_esRequest;
2744     req->u.esRequest = (Z_IORequest *)
2745         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2746
2747     /* to keep part ... */
2748     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2749         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2750     req->u.esRequest->toKeep->supplDescription = 0;
2751     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2752         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2753
2754     str = ZOOM_options_get(p->options, "contact-name");
2755     req->u.esRequest->toKeep->contact->name = str ?
2756         nmem_strdup (p->odr_out->mem, str) : 0;
2757
2758     str = ZOOM_options_get(p->options, "contact-phone");
2759     req->u.esRequest->toKeep->contact->phone = str ?
2760         nmem_strdup (p->odr_out->mem, str) : 0;
2761
2762     str = ZOOM_options_get(p->options, "contact-email");
2763     req->u.esRequest->toKeep->contact->email = str ?
2764         nmem_strdup (p->odr_out->mem, str) : 0;
2765
2766     req->u.esRequest->toKeep->addlBilling = 0;
2767
2768     /* not to keep part ... */
2769     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2770         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2771
2772     str = ZOOM_options_get(p->options, "itemorder-setname");
2773     if (!str)
2774         str = "default";
2775
2776     if (!*str)
2777         req->u.esRequest->notToKeep->resultSetItem = 0;
2778     else
2779     {
2780         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2781            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2782
2783         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2784            nmem_strdup (p->odr_out->mem, str);
2785         req->u.esRequest->notToKeep->resultSetItem->item =
2786             (int *) odr_malloc(p->odr_out, sizeof(int));
2787
2788         str = ZOOM_options_get(p->options, "itemorder-item");
2789         *req->u.esRequest->notToKeep->resultSetItem->item =
2790             (str ? atoi(str) : 1);
2791     }
2792     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2793
2794     return req;
2795 }
2796
2797 Z_APDU *create_admin_package(ZOOM_package p, int type,
2798                              Z_ESAdminOriginPartToKeep **toKeepP,
2799                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2800 {
2801     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2802     if (apdu)
2803     {
2804         Z_ESAdminOriginPartToKeep  *toKeep;
2805         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2806         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2807         const char *first_db = "Default";
2808         int num_db;
2809         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2810         if (num_db > 0)
2811             first_db = db[0];
2812
2813         r->direct_reference =
2814             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2815                                    VAL_ADMINSERVICE);
2816         r->descriptor = 0;
2817         r->indirect_reference = 0;
2818         r->which = Z_External_ESAdmin;
2819
2820         r->u.adminService = (Z_Admin *)
2821             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2822         r->u.adminService->which = Z_Admin_esRequest;
2823         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2824             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2825
2826         toKeep = r->u.adminService->u.esRequest->toKeep =
2827             (Z_ESAdminOriginPartToKeep *)
2828             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2829         toKeep->which = type;
2830         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2831         toKeep->u.create = odr_nullval();
2832         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2833
2834         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2835             (Z_ESAdminOriginPartNotToKeep *)
2836             odr_malloc(p->odr_out,
2837                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2838         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2839         notToKeep->u.recordsWillFollow = odr_nullval();
2840         if (toKeepP)
2841             *toKeepP = toKeep;
2842         if (notToKeepP)
2843             *notToKeepP = notToKeep;
2844     }
2845     return apdu;
2846 }
2847
2848 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2849 {
2850     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2851     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2852     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2853     const char *doc = ZOOM_options_get(p->options, "doc");
2854
2855     if (!doc)
2856         doc = "";
2857
2858     req->taskSpecificParameters = ext;
2859     ext->direct_reference = req->packageType;
2860     ext->descriptor = 0;
2861     ext->indirect_reference = 0;
2862
2863     ext->which = Z_External_octet;
2864     ext->u.single_ASN1_type =
2865         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
2866                            strlen(doc));
2867     return apdu;
2868 }
2869
2870 static Z_APDU *create_update_package(ZOOM_package p)
2871 {
2872     Z_APDU *apdu = 0;
2873     const char *first_db = "Default";
2874     int num_db;
2875     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2876     const char *action = ZOOM_options_get(p->options, "action");
2877     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2878     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2879     const char *record_buf = ZOOM_options_get(p->options, "record");
2880     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2881     int syntax_oid = VAL_NONE;
2882     int action_no = -1;
2883
2884     if (syntax_str)
2885         syntax_oid = oid_getvalbyname(syntax_str);
2886     if (!record_buf)
2887     {
2888         record_buf = "void";
2889         syntax_oid = VAL_SUTRS;
2890     }
2891     if (syntax_oid == VAL_NONE)
2892         syntax_oid = VAL_TEXT_XML;
2893
2894     if (num_db > 0)
2895         first_db = db[0];
2896
2897     if (!action)
2898         action = "specialUpdate";
2899
2900     if (!strcmp(action, "recordInsert"))
2901         action_no = Z_IUOriginPartToKeep_recordInsert;
2902     else if (!strcmp(action, "recordReplace"))
2903         action_no = Z_IUOriginPartToKeep_recordReplace;
2904     else if (!strcmp(action, "recordDelete"))
2905         action_no = Z_IUOriginPartToKeep_recordDelete;
2906     else if (!strcmp(action, "elementUpdate"))
2907         action_no = Z_IUOriginPartToKeep_elementUpdate;
2908     else if (!strcmp(action, "specialUpdate"))
2909         action_no = Z_IUOriginPartToKeep_specialUpdate;
2910     else
2911         return 0;
2912
2913     apdu = create_es_package (p, VAL_DBUPDATE);
2914     if (apdu)
2915     {
2916         Z_IUOriginPartToKeep *toKeep;
2917         Z_IUSuppliedRecords *notToKeep;
2918         Z_External *r = (Z_External *)
2919             odr_malloc (p->odr_out, sizeof(*r));
2920
2921         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2922
2923         r->direct_reference =
2924             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2925                                    VAL_DBUPDATE);
2926         r->descriptor = 0;
2927         r->which = Z_External_update;
2928         r->indirect_reference = 0;
2929         r->u.update = (Z_IUUpdate *)
2930             odr_malloc(p->odr_out, sizeof(*r->u.update));
2931
2932         r->u.update->which = Z_IUUpdate_esRequest;
2933         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2934             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2935         toKeep = r->u.update->u.esRequest->toKeep =
2936             (Z_IUOriginPartToKeep *)
2937             odr_malloc(p->odr_out, sizeof(*toKeep));
2938
2939         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2940         toKeep->schema = 0;
2941         toKeep->elementSetName = 0;
2942         toKeep->actionQualifier = 0;
2943         toKeep->action = odr_intdup(p->odr_out, action_no);
2944
2945         notToKeep = r->u.update->u.esRequest->notToKeep =
2946             (Z_IUSuppliedRecords *)
2947             odr_malloc(p->odr_out, sizeof(*notToKeep));
2948         notToKeep->num = 1;
2949         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2950             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2951         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2952             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2953         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2954         if (recordIdOpaque)
2955         {
2956             notToKeep->elements[0]->u.opaque =
2957                 odr_create_Odr_oct(p->odr_out,
2958                                    (const unsigned char *) recordIdOpaque,
2959                                    strlen(recordIdOpaque));
2960         }
2961         else if (recordIdNumber)
2962         {
2963             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2964
2965             notToKeep->elements[0]->u.number =
2966                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2967         }
2968         else
2969             notToKeep->elements[0]->u.opaque = 0;
2970         notToKeep->elements[0]->supplementalId = 0;
2971         notToKeep->elements[0]->correlationInfo = 0;
2972         notToKeep->elements[0]->record =
2973             z_ext_record(p->odr_out, syntax_oid,
2974                          record_buf, strlen(record_buf));
2975     }
2976     if (0 && apdu)
2977     {
2978        ODR print = odr_createmem(ODR_PRINT);
2979
2980        z_APDU(print, &apdu, 0, 0);
2981        odr_destroy(print);
2982     }
2983     return apdu;
2984 }
2985
2986 ZOOM_API(void)
2987     ZOOM_package_send (ZOOM_package p, const char *type)
2988 {
2989     Z_APDU *apdu = 0;
2990     ZOOM_connection c;
2991     if (!p)
2992         return;
2993     c = p->connection;
2994     odr_reset (p->odr_out);
2995     xfree (p->buf_out);
2996     p->buf_out = 0;
2997     if (!strcmp(type, "itemorder"))
2998     {
2999         apdu = create_es_package (p, VAL_ITEMORDER);
3000         if (apdu)
3001         {
3002             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
3003
3004             r->direct_reference =
3005                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3006                                        VAL_ITEMORDER);
3007             r->descriptor = 0;
3008             r->which = Z_External_itemOrder;
3009             r->indirect_reference = 0;
3010             r->u.itemOrder = encode_item_order (p);
3011
3012             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3013         }
3014     }
3015     else if (!strcmp(type, "create"))  /* create database */
3016     {
3017         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3018                                     0, 0);
3019     }
3020     else if (!strcmp(type, "drop"))  /* drop database */
3021     {
3022         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3023                                     0, 0);
3024     }
3025     else if (!strcmp(type, "commit"))  /* commit changes */
3026     {
3027         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3028                                     0, 0);
3029     }
3030     else if (!strcmp(type, "update")) /* update record(s) */
3031     {
3032         apdu = create_update_package(p);
3033     }
3034     else if (!strcmp(type, "xmlupdate"))
3035     {
3036         apdu = create_xmlupdate_package(p);
3037     }
3038     if (apdu)
3039     {
3040         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3041         {
3042             char *buf;
3043
3044             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
3045             task->u.package = p;
3046             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3047             p->buf_out = (char *) xmalloc (p->len_out);
3048             memcpy (p->buf_out, buf, p->len_out);
3049
3050             (p->refcount)++;
3051             if (!c->async)
3052             {
3053                 while (ZOOM_event (1, &c))
3054                     ;
3055             }
3056         }
3057     }
3058 }
3059
3060 ZOOM_API(ZOOM_package)
3061     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
3062 {
3063     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
3064
3065     p->connection = c;
3066     p->odr_out = odr_createmem (ODR_ENCODE);
3067     p->options = ZOOM_options_create_with_parent2 (options, c->options);
3068     p->refcount = 1;
3069     p->buf_out = 0;
3070     p->len_out = 0;
3071     return p;
3072 }
3073
3074 ZOOM_API(void)
3075     ZOOM_package_destroy(ZOOM_package p)
3076 {
3077     if (!p)
3078         return;
3079     (p->refcount)--;
3080     if (p->refcount == 0)
3081     {
3082         odr_destroy (p->odr_out);
3083         xfree (p->buf_out);
3084
3085         ZOOM_options_destroy (p->options);
3086         xfree (p);
3087     }
3088 }
3089
3090 ZOOM_API(const char *)
3091 ZOOM_package_option_get (ZOOM_package p, const char *key)
3092 {
3093     return ZOOM_options_get (p->options, key);
3094 }
3095
3096
3097 ZOOM_API(void)
3098 ZOOM_package_option_set (ZOOM_package p, const char *key,
3099                               const char *val)
3100 {
3101     ZOOM_options_set (p->options, key, val);
3102 }
3103
3104 static int ZOOM_connection_exec_task (ZOOM_connection c)
3105 {
3106     ZOOM_task task = c->tasks;
3107     zoom_ret ret = zoom_complete;
3108
3109     if (!task)
3110         return 0;
3111     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3112              c, task->which, task->running);
3113     if (c->error != ZOOM_ERROR_NONE)
3114     {
3115         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3116                 "removing tasks because of error = %d", c, c->error);
3117         ZOOM_connection_remove_tasks (c);
3118         return 0;
3119     }
3120     if (task->running)
3121     {
3122         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3123                  "task already running", c);
3124         return 0;
3125     }
3126     task->running = 1;
3127     ret = zoom_complete;
3128     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3129     {
3130         switch (task->which)
3131         {
3132         case ZOOM_TASK_SEARCH:
3133             if (c->proto == PROTO_HTTP)
3134                 ret = ZOOM_connection_srw_send_search(c);
3135             else
3136                 ret = ZOOM_connection_send_search(c);
3137             break;
3138         case ZOOM_TASK_RETRIEVE:
3139             if (c->proto == PROTO_HTTP)
3140                 ret = ZOOM_connection_srw_send_search(c);
3141             else
3142                 ret = send_present (c);
3143             break;
3144         case ZOOM_TASK_CONNECT:
3145             ret = do_connect(c);
3146             break;
3147         case ZOOM_TASK_SCAN:
3148             ret = send_scan(c);
3149             break;
3150         case ZOOM_TASK_PACKAGE:
3151             ret = send_package(c);
3152             break;
3153         case ZOOM_TASK_SORT:
3154             c->tasks->u.sort.resultset->r_sort_spec =
3155                 c->tasks->u.sort.q->sort_spec;
3156             ret = send_sort(c, c->tasks->u.sort.resultset);
3157             break;
3158         }
3159     }
3160     else
3161     {
3162         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3163                 "remove tasks because no connection exist", c);
3164         ZOOM_connection_remove_tasks (c);
3165     }
3166     if (ret == zoom_complete)
3167     {
3168         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3169                  "task removed (complete)", c);
3170         ZOOM_connection_remove_task (c);
3171         return 0;
3172     }
3173     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3174             "task pending", c);
3175     return 1;
3176 }
3177
3178 static zoom_ret send_sort_present (ZOOM_connection c)
3179 {
3180     zoom_ret r = zoom_complete;
3181
3182     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3183         r = send_sort (c, c->tasks->u.search.resultset);
3184     if (r == zoom_complete)
3185         r = send_present (c);
3186     return r;
3187 }
3188
3189 static int es_response (ZOOM_connection c,
3190                         Z_ExtendedServicesResponse *res)
3191 {
3192     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3193         return 0;
3194     if (res->diagnostics && res->num_diagnostics > 0)
3195         response_diag(c, res->diagnostics[0]);
3196     if (res->taskPackage &&
3197         res->taskPackage->which == Z_External_extendedService)
3198     {
3199         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3200         Odr_oct *id = taskPackage->targetReference;
3201
3202         if (id)
3203             ZOOM_options_setl (c->tasks->u.package->options,
3204                                "targetReference", (char*) id->buf, id->len);
3205     }
3206     if (res->taskPackage &&
3207         res->taskPackage->which == Z_External_octet)
3208     {
3209         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3210         ZOOM_options_setl (c->tasks->u.package->options,
3211                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
3212     }
3213     return 1;
3214 }
3215
3216 static void interpret_init_diag(ZOOM_connection c,
3217                                 Z_DiagnosticFormat *diag)
3218 {
3219     if (diag->num > 0)
3220     {
3221         Z_DiagnosticFormat_s *ds = diag->elements[0];
3222         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3223             response_default_diag(c, ds->u.defaultDiagRec);
3224     }
3225 }
3226
3227
3228 static void interpret_otherinformation_field(ZOOM_connection c,
3229                                              Z_OtherInformation *ui)
3230 {
3231     int i;
3232     for (i = 0; i < ui->num_elements; i++)
3233     {
3234         Z_OtherInformationUnit *unit = ui->list[i];
3235         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3236             unit->information.externallyDefinedInfo &&
3237             unit->information.externallyDefinedInfo->which ==
3238             Z_External_diag1)
3239         {
3240             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3241         }
3242     }
3243 }
3244
3245 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3246 {
3247     Z_InitResponse *initrs;
3248
3249     c->mask = 0;
3250     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3251     switch(apdu->which)
3252     {
3253     case Z_APDU_initResponse:
3254         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3255         initrs = apdu->u.initResponse;
3256         ZOOM_connection_option_set(c, "serverImplementationId",
3257                                    initrs->implementationId ?
3258                                    initrs->implementationId : "");
3259         ZOOM_connection_option_set(c, "serverImplementationName",
3260                                    initrs->implementationName ?
3261                                    initrs->implementationName : "");
3262         ZOOM_connection_option_set(c, "serverImplementationVersion",
3263                                    initrs->implementationVersion ?
3264                                    initrs->implementationVersion : "");
3265         /* Set the three old options too, for old applications */
3266         ZOOM_connection_option_set(c, "targetImplementationId",
3267                                    initrs->implementationId ?
3268                                    initrs->implementationId : "");
3269         ZOOM_connection_option_set(c, "targetImplementationName",
3270                                    initrs->implementationName ?
3271                                    initrs->implementationName : "");
3272         ZOOM_connection_option_set(c, "targetImplementationVersion",
3273                                    initrs->implementationVersion ?
3274                                    initrs->implementationVersion : "");
3275         if (!*initrs->result)
3276         {
3277             Z_External *uif = initrs->userInformationField;
3278
3279             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3280
3281             if (uif && uif->which == Z_External_userInfo1)
3282                 interpret_otherinformation_field(c, uif->u.userInfo1);
3283         }
3284         else
3285         {
3286             char *cookie =
3287                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3288                                           VAL_COOKIE, 1, 0);
3289             xfree (c->cookie_in);
3290             c->cookie_in = 0;
3291             if (cookie)
3292                 c->cookie_in = xstrdup(cookie);
3293             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3294                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3295                 c->support_named_resultsets = 1;
3296             if (c->tasks)
3297             {
3298                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3299                 ZOOM_connection_remove_task (c);
3300             }
3301             ZOOM_connection_exec_task (c);
3302         }
3303         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3304         {
3305             NMEM tmpmem = nmem_create();
3306             Z_CharSetandLanguageNegotiation *p =
3307                 yaz_get_charneg_record(initrs->otherInfo);
3308
3309             if (p)
3310             {
3311                 char *charset = NULL, *lang = NULL;
3312                 int sel;
3313
3314                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3315                 yaz_log(log_details, "%p recv_apdu target accepted: "
3316                         "charset %s, language %s, select %d",
3317                         c,
3318                         charset ? charset : "none", lang ? lang : "none", sel);
3319                 if (charset)
3320                     ZOOM_connection_option_set (c, "negotiation-charset",
3321                                                 charset);
3322                 if (lang)
3323                     ZOOM_connection_option_set (c, "negotiation-lang",
3324                                                 lang);
3325
3326                 ZOOM_connection_option_set (
3327                     c,  "negotiation-charset-in-effect-for-records",
3328                     (sel != 0) ? "1" : "0");
3329                 nmem_destroy(tmpmem);
3330             }
3331         }
3332         break;
3333     case Z_APDU_searchResponse:
3334         yaz_log(log_api, "%p recv_apdu Search response", c);
3335         handle_search_response (c, apdu->u.searchResponse);
3336         if (send_sort_present (c) == zoom_complete)
3337             ZOOM_connection_remove_task (c);
3338         break;
3339     case Z_APDU_presentResponse:
3340         yaz_log(log_api, "%p recv_apdu Present response", c);
3341         handle_present_response (c, apdu->u.presentResponse);
3342         if (send_present (c) == zoom_complete)
3343             ZOOM_connection_remove_task (c);
3344         break;
3345     case Z_APDU_sortResponse:
3346         yaz_log(log_api, "%p recv_apdu Sort response", c);
3347         sort_response (c, apdu->u.sortResponse);
3348         if (send_present (c) == zoom_complete)
3349             ZOOM_connection_remove_task (c);
3350         break;
3351     case Z_APDU_scanResponse:
3352         yaz_log(log_api, "%p recv_apdu Scan response", c);
3353         scan_response (c, apdu->u.scanResponse);
3354         ZOOM_connection_remove_task (c);
3355         break;
3356     case Z_APDU_extendedServicesResponse:
3357         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3358         es_response (c, apdu->u.extendedServicesResponse);
3359         ZOOM_connection_remove_task (c);
3360         break;
3361     case Z_APDU_close:
3362         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3363         if (c->reconnect_ok)
3364         {
3365             do_close(c);
3366             c->tasks->running = 0;
3367             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3368         }
3369         else
3370         {
3371             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3372             do_close(c);
3373         }
3374         break;
3375     default:
3376         yaz_log(log_api, "%p Received unknown PDU", c);
3377         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3378         do_close(c);
3379     }
3380 }
3381
3382 #if HAVE_XML2
3383 static void handle_srw_response(ZOOM_connection c,
3384                                 Z_SRW_searchRetrieveResponse *res)
3385 {
3386     ZOOM_resultset resultset = 0;
3387     int i;
3388     NMEM nmem;
3389     ZOOM_Event event;
3390
3391     if (!c->tasks)
3392         return;
3393
3394     if (c->tasks->which == ZOOM_TASK_SEARCH)
3395         resultset = c->tasks->u.search.resultset;
3396     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3397         resultset = c->tasks->u.retrieve.resultset;
3398     else
3399         return ;
3400
3401     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3402     ZOOM_connection_put_event(c, event);
3403
3404     resultset->size = 0;
3405
3406     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3407
3408     if (res->numberOfRecords)
3409         resultset->size = *res->numberOfRecords;
3410
3411     for (i = 0; i<res->num_records; i++)
3412     {
3413         int pos;
3414
3415         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3416             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3417
3418         if (res->records[i].recordPosition &&
3419             *res->records[i].recordPosition > 0)
3420             pos = *res->records[i].recordPosition - 1;
3421         else
3422             pos = resultset->start + i;
3423
3424         npr->databaseName = 0;
3425         npr->which = Z_NamePlusRecord_databaseRecord;
3426         npr->u.databaseRecord = (Z_External *)
3427             odr_malloc(c->odr_in, sizeof(Z_External));
3428         npr->u.databaseRecord->descriptor = 0;
3429         npr->u.databaseRecord->direct_reference =
3430             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3431         npr->u.databaseRecord->which = Z_External_octet;
3432
3433         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3434             odr_malloc(c->odr_in, sizeof(Odr_oct));
3435         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3436             res->records[i].recordData_buf;
3437         npr->u.databaseRecord->u.octet_aligned->len =
3438             npr->u.databaseRecord->u.octet_aligned->size =
3439             res->records[i].recordData_len;
3440         record_cache_add (resultset, npr, pos);
3441     }
3442     if (res->num_diagnostics > 0)
3443     {
3444         const char *uri = res->diagnostics[0].uri;
3445         if (uri)
3446         {
3447             int code = 0;
3448             const char *cp;
3449             if ((cp = strrchr(uri, '/')))
3450                 code = atoi(cp+1);
3451             set_dset_error(c, code, uri,
3452                            res->diagnostics[0].details, 0);
3453         }
3454     }
3455     nmem = odr_extract_mem(c->odr_in);
3456     nmem_transfer(resultset->odr->mem, nmem);
3457     nmem_destroy(nmem);
3458 }
3459 #endif
3460
3461 #if HAVE_XML2
3462 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3463 {
3464     int ret = -1;
3465     const char *content_type = z_HTTP_header_lookup(hres->headers,
3466                                                     "Content-Type");
3467     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3468                                                        "Connection");
3469     c->mask = 0;
3470     yaz_log(log_details, "%p handle_http", c);
3471
3472     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3473     {
3474         Z_SOAP *soap_package = 0;
3475         ODR o = c->odr_in;
3476         Z_SOAP_Handler soap_handlers[2] = {
3477             {"http://www.loc.gov/zing/srw/", 0,
3478              (Z_SOAP_fun) yaz_srw_codec},
3479             {0, 0, 0}
3480         };
3481         ret = z_soap_codec(o, &soap_package,
3482                            &hres->content_buf, &hres->content_len,
3483                            soap_handlers);
3484         if (!ret && soap_package->which == Z_SOAP_generic &&
3485             soap_package->u.generic->no == 0)
3486         {
3487             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3488             if (sr->which == Z_SRW_searchRetrieve_response)
3489                 handle_srw_response(c, sr->u.response);
3490             else
3491                 ret = -1;
3492         }
3493         else if (!ret && (soap_package->which == Z_SOAP_fault
3494                           || soap_package->which == Z_SOAP_error))
3495         {
3496             set_HTTP_error(c, hres->code,
3497                            soap_package->u.fault->fault_code,
3498                            soap_package->u.fault->fault_string);
3499         }
3500         else
3501             ret = -1;
3502     }
3503     if (ret)
3504     {
3505         if (hres->code != 200)
3506             set_HTTP_error(c, hres->code, 0, 0);
3507         else
3508             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3509         do_close (c);
3510     }
3511     ZOOM_connection_remove_task(c);
3512     if (!strcmp(hres->version, "1.0"))
3513     {
3514         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3515         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3516             do_close(c);
3517     }
3518     else
3519     {
3520         /* HTTP 1.1: only if no close we stay alive .. */
3521         if (connection_head && !strcmp(connection_head, "close"))
3522             do_close(c);
3523     }
3524 }
3525 #endif
3526
3527 static int do_read (ZOOM_connection c)
3528 {
3529     int r, more;
3530     ZOOM_Event event;
3531
3532     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3533     ZOOM_connection_put_event (c, event);
3534
3535     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3536     more = cs_more(c->cs);
3537     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3538     if (r == 1)
3539         return 0;
3540     if (r <= 0)
3541     {
3542         if (c->reconnect_ok)
3543         {
3544             do_close (c);
3545             c->reconnect_ok = 0;
3546             yaz_log(log_details, "%p do_read reconnect read", c);
3547             c->tasks->running = 0;
3548             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3549         }
3550         else
3551         {
3552             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3553             do_close (c);
3554         }
3555     }
3556     else
3557     {
3558         Z_GDU *gdu;
3559         ZOOM_Event event;
3560
3561         odr_reset (c->odr_in);
3562         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3563         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3564         ZOOM_connection_put_event (c, event);
3565
3566         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3567         {
3568             int x;
3569             int err = odr_geterrorx(c->odr_in, &x);
3570             char msg[60];
3571             const char *element = odr_getelement(c->odr_in);
3572             sprintf (msg, "ODR code %d:%d element=%-20s",
3573                      err, x, element ? element : "<unknown>");
3574             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3575             do_close (c);
3576         }
3577         else if (gdu->which == Z_GDU_Z3950)
3578             recv_apdu (c, gdu->u.z3950);
3579         else if (gdu->which == Z_GDU_HTTP_Response)
3580         {
3581 #if HAVE_XML2
3582             handle_http (c, gdu->u.HTTP_Response);
3583 #else
3584             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3585             do_close (c);
3586 #endif
3587         }
3588         c->reconnect_ok = 0;
3589     }
3590     return 1;
3591 }
3592
3593 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3594 {
3595     int r;
3596     ZOOM_Event event;
3597
3598     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3599     ZOOM_connection_put_event (c, event);
3600
3601     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3602     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3603     {
3604         yaz_log(log_details, "%p do_write_ex write failed", c);
3605         if (c->reconnect_ok)
3606         {
3607             do_close (c);
3608             c->reconnect_ok = 0;
3609             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3610             c->tasks->running = 0;
3611             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3612             return zoom_pending;
3613         }
3614         if (c->state == STATE_CONNECTING)
3615             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3616         else
3617             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3618         do_close (c);
3619         return zoom_complete;
3620     }
3621     else if (r == 1)
3622     {
3623         c->mask = ZOOM_SELECT_EXCEPT;
3624         if (c->cs->io_pending & CS_WANT_WRITE)
3625             c->mask += ZOOM_SELECT_WRITE;
3626         if (c->cs->io_pending & CS_WANT_READ)
3627             c->mask += ZOOM_SELECT_READ;
3628         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3629                 c, c->mask);
3630     }
3631     else
3632     {
3633         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3634         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3635                 c, c->mask);
3636     }
3637     return zoom_pending;
3638 }
3639
3640 static zoom_ret do_write(ZOOM_connection c)
3641 {
3642     return do_write_ex (c, c->buf_out, c->len_out);
3643 }
3644
3645
3646 ZOOM_API(const char *)
3647 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3648 {
3649     return ZOOM_options_get (c->options, key);
3650 }
3651
3652 ZOOM_API(const char *)
3653 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp)
3654 {
3655     return ZOOM_options_getl (c->options, key, lenp);
3656 }
3657
3658 ZOOM_API(void)
3659 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3660                             const char *val)
3661 {
3662     ZOOM_options_set (c->options, key, val);
3663 }
3664
3665 ZOOM_API(void)
3666 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3667                              const char *val, int len)
3668 {
3669     ZOOM_options_setl (c->options, key, val, len);
3670 }
3671
3672 ZOOM_API(const char *)
3673 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3674 {
3675     return ZOOM_options_get (r->options, key);
3676 }
3677
3678 ZOOM_API(void)
3679 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3680                                   const char *val)
3681 {
3682     ZOOM_options_set (r->options, key, val);
3683 }
3684
3685
3686 ZOOM_API(int)
3687 ZOOM_connection_errcode (ZOOM_connection c)
3688 {
3689     return ZOOM_connection_error (c, 0, 0);
3690 }
3691
3692 ZOOM_API(const char *)
3693 ZOOM_connection_errmsg (ZOOM_connection c)
3694 {
3695     const char *msg;
3696     ZOOM_connection_error (c, &msg, 0);
3697     return msg;
3698 }
3699
3700 ZOOM_API(const char *)
3701 ZOOM_connection_addinfo (ZOOM_connection c)
3702 {
3703     const char *addinfo;
3704     ZOOM_connection_error (c, 0, &addinfo);
3705     return addinfo;
3706 }
3707
3708 ZOOM_API(const char *)
3709 ZOOM_connection_diagset (ZOOM_connection c)
3710 {
3711     const char *diagset;
3712     ZOOM_connection_error_x (c, 0, 0, &diagset);
3713     return diagset;
3714 }
3715
3716 ZOOM_API(const char *)
3717 ZOOM_diag_str (int error)
3718 {
3719     switch (error)
3720     {
3721     case ZOOM_ERROR_NONE:
3722         return "No error";
3723     case ZOOM_ERROR_CONNECT:
3724         return "Connect failed";
3725     case ZOOM_ERROR_MEMORY:
3726         return "Out of memory";
3727     case ZOOM_ERROR_ENCODE:
3728         return "Encoding failed";
3729     case ZOOM_ERROR_DECODE:
3730         return "Decoding failed";
3731     case ZOOM_ERROR_CONNECTION_LOST:
3732         return "Connection lost";
3733     case ZOOM_ERROR_INIT:
3734         return "Init rejected";
3735     case ZOOM_ERROR_INTERNAL:
3736         return "Internal failure";
3737     case ZOOM_ERROR_TIMEOUT:
3738         return "Timeout";
3739     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3740         return "Unsupported protocol";
3741     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3742         return "Unsupported query type";
3743     case ZOOM_ERROR_INVALID_QUERY:
3744         return "Invalid query";
3745     case ZOOM_ERROR_CQL_PARSE:
3746         return "CQL parsing error";
3747     case ZOOM_ERROR_CQL_TRANSFORM:
3748         return "CQL transformation error";
3749     default:
3750         return diagbib1_str (error);
3751     }
3752 }
3753
3754 ZOOM_API(int)
3755 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3756                          const char **addinfo, const char **diagset)
3757 {
3758     int error = c->error;
3759     if (cp)
3760     {
3761         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3762             *cp = ZOOM_diag_str(error);
3763         else if (!strcmp(c->diagset, "HTTP"))
3764             *cp = z_HTTP_errmsg(c->error);
3765         else if (!strcmp(c->diagset, "Bib-1"))
3766             *cp = ZOOM_diag_str(error);
3767         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3768             *cp = yaz_diag_srw_str(c->error);
3769         else
3770             *cp = "Unknown error and diagnostic set";
3771     }
3772     if (addinfo)
3773         *addinfo = c->addinfo ? c->addinfo : "";
3774     if (diagset)
3775         *diagset = c->diagset ? c->diagset : "";
3776     return c->error;
3777 }
3778
3779 ZOOM_API(int)
3780 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3781                        const char **addinfo)
3782 {
3783     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3784 }
3785
3786 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3787 {
3788     ZOOM_Event event = 0;
3789     int r = cs_look(c->cs);
3790     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3791              c, mask, r);
3792
3793     if (r == CS_NONE)
3794     {
3795         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3796         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3797         do_close (c);
3798         ZOOM_connection_put_event (c, event);
3799     }
3800     else if (r == CS_CONNECT)
3801     {
3802         int ret;
3803         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3804
3805         ret = cs_rcvconnect (c->cs);
3806         yaz_log(log_details, "%p ZOOM_connection_do_io "
3807                 "cs_rcvconnect returned %d", c, ret);
3808         if (ret == 1)
3809         {
3810             c->mask = ZOOM_SELECT_EXCEPT;
3811             if (c->cs->io_pending & CS_WANT_WRITE)
3812                 c->mask += ZOOM_SELECT_WRITE;
3813             if (c->cs->io_pending & CS_WANT_READ)
3814                 c->mask += ZOOM_SELECT_READ;
3815             ZOOM_connection_put_event (c, event);
3816         }
3817         else if (ret == 0)
3818         {
3819             ZOOM_connection_put_event (c, event);
3820             get_cert(c);
3821             if (c->proto == PROTO_Z3950)
3822                 ZOOM_connection_send_init(c);
3823             else
3824             {
3825                 /* no init request for SRW .. */
3826                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3827                 ZOOM_connection_remove_task (c);
3828                 c->mask = 0;
3829                 ZOOM_connection_exec_task (c);
3830             }
3831             c->state = STATE_ESTABLISHED;
3832         }
3833         else
3834         {
3835             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3836             do_close (c);
3837             ZOOM_connection_put_event (c, event);
3838         }
3839     }
3840     else
3841     {
3842         if (mask & ZOOM_SELECT_READ)
3843             do_read (c);
3844         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3845             do_write (c);
3846     }
3847     return 1;
3848 }
3849
3850 ZOOM_API(int)
3851 ZOOM_connection_last_event(ZOOM_connection cs)
3852 {
3853     if (!cs)
3854         return ZOOM_EVENT_NONE;
3855     return cs->last_event;
3856 }
3857
3858 ZOOM_API(int)
3859 ZOOM_event (int no, ZOOM_connection *cs)
3860 {
3861     int timeout = 30;      /* default timeout in seconds */
3862     int timeout_set = 0;   /* whether it was overriden at all */
3863 #if HAVE_SYS_POLL_H
3864     struct pollfd pollfds[1024];
3865     ZOOM_connection poll_cs[1024];
3866 #else
3867     struct timeval tv;
3868     fd_set input, output, except;
3869 #endif
3870     int i, r, nfds;
3871     int max_fd = 0;
3872
3873     for (i = 0; i<no; i++)
3874     {
3875         ZOOM_connection c = cs[i];
3876         ZOOM_Event event;
3877         if (c && (event = ZOOM_connection_get_event(c)))
3878         {
3879             ZOOM_Event_destroy (event);
3880             return i+1;
3881         }
3882     }
3883     for (i = 0; i<no; i++)
3884     {
3885         ZOOM_connection c = cs[i];
3886         ZOOM_Event event;
3887         if (c && ZOOM_connection_exec_task (c))
3888         {
3889             if ((event = ZOOM_connection_get_event(c)))
3890             {
3891                 ZOOM_Event_destroy (event);
3892                 return i+1;
3893             }
3894         }
3895     }
3896 #if HAVE_SYS_POLL_H
3897
3898 #else
3899     FD_ZERO (&input);
3900     FD_ZERO (&output);
3901     FD_ZERO (&except);
3902 #endif
3903     nfds = 0;
3904     for (i = 0; i<no; i++)
3905     {
3906         ZOOM_connection c = cs[i];
3907         int fd, mask;
3908         int this_timeout;
3909
3910         if (!c)
3911             continue;
3912         fd = z3950_connection_socket(c);
3913         mask = z3950_connection_mask(c);
3914
3915         if (fd == -1)
3916             continue;
3917         if (max_fd < fd)
3918             max_fd = fd;
3919
3920         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3921         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3922         if (this_timeout != -2)
3923         {
3924             /* ensure the minimum timeout is used */
3925             if (!timeout_set)
3926                 timeout = this_timeout;
3927             else if (this_timeout != -1 && this_timeout < timeout)
3928                 timeout = this_timeout;
3929             timeout_set = 1;
3930         }
3931 #if HAVE_SYS_POLL_H
3932         if (mask)
3933         {
3934             short poll_events = 0;
3935
3936             if (mask & ZOOM_SELECT_READ)
3937                 poll_events += POLLIN;
3938             if (mask & ZOOM_SELECT_WRITE)
3939                 poll_events += POLLOUT;
3940             if (mask & ZOOM_SELECT_EXCEPT)
3941                 poll_events += POLLERR;
3942             pollfds[nfds].fd = fd;
3943             pollfds[nfds].events = poll_events;
3944             pollfds[nfds].revents = 0;
3945             poll_cs[nfds] = c;
3946             nfds++;
3947         }
3948 #else
3949         if (mask & ZOOM_SELECT_READ)
3950         {
3951             FD_SET (fd, &input);
3952             nfds++;
3953         }
3954         if (mask & ZOOM_SELECT_WRITE)
3955         {
3956             FD_SET (fd, &output);
3957             nfds++;
3958         }
3959         if (mask & ZOOM_SELECT_EXCEPT)
3960         {
3961             FD_SET (fd, &except);
3962             nfds++;
3963         }
3964 #endif
3965     }
3966     if (!nfds)
3967         return 0;
3968
3969 #if HAVE_SYS_POLL_H
3970     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3971     for (i = 0; i<nfds; i++)
3972     {
3973         ZOOM_connection c = poll_cs[i];
3974         if (r && c->mask)
3975         {
3976             int mask = 0;
3977             if (pollfds[i].revents & POLLIN)
3978                 mask += ZOOM_SELECT_READ;
3979             if (pollfds[i].revents & POLLOUT)
3980                 mask += ZOOM_SELECT_WRITE;
3981             if (pollfds[i].revents & POLLERR)
3982                 mask += ZOOM_SELECT_EXCEPT;
3983             if (mask)
3984                 ZOOM_connection_do_io(c, mask);
3985         }
3986         else if (r == 0 && c->mask)
3987         {
3988             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3989             /* timeout and this connection was waiting */
3990             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3991             do_close (c);
3992             ZOOM_connection_put_event(c, event);
3993         }
3994     }
3995 #else
3996     tv.tv_sec = timeout;
3997     tv.tv_usec = 0;
3998     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
3999     for (i = 0; i<no; i++)
4000     {
4001         ZOOM_connection c = cs[i];
4002         int fd, mask;
4003
4004         if (!c)
4005             continue;
4006         fd = z3950_connection_socket(c);
4007         mask = 0;
4008         if (r && c->mask)
4009         {
4010             /* no timeout and real socket */
4011             if (FD_ISSET(fd, &input))
4012                 mask += ZOOM_SELECT_READ;
4013             if (FD_ISSET(fd, &output))
4014                 mask += ZOOM_SELECT_WRITE;
4015             if (FD_ISSET(fd, &except))
4016                 mask += ZOOM_SELECT_EXCEPT;
4017             if (mask)
4018                 ZOOM_connection_do_io(c, mask);
4019         }
4020         if (r == 0 && c->mask)
4021         {
4022             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4023             /* timeout and this connection was waiting */
4024             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4025             do_close (c);
4026             ZOOM_connection_put_event(c, event);
4027         }
4028     }
4029 #endif
4030     for (i = 0; i<no; i++)
4031     {
4032         ZOOM_connection c = cs[i];
4033         ZOOM_Event event;
4034         if (c && (event = ZOOM_connection_get_event(c)))
4035         {
4036             ZOOM_Event_destroy (event);
4037             return i+1;
4038         }
4039     }
4040     return 0;
4041 }
4042
4043
4044 /*
4045  * Returns an xmalloc()d string containing RPN that corresponds to the
4046  * CQL passed in.  On error, sets the Connection object's error state
4047  * and returns a null pointer.
4048  * ### We could cache CQL parser and/or transformer in Connection.
4049  */
4050 static char *cql2pqf(ZOOM_connection c, const char *cql)
4051 {
4052     CQL_parser parser;
4053     int error;
4054     struct cql_node *node;
4055     const char *cqlfile;
4056     static cql_transform_t trans;
4057     char pqfbuf[512];
4058
4059     parser = cql_parser_create();
4060     if ((error = cql_parser_string(parser, cql)) != 0) {
4061         cql_parser_destroy(parser);
4062         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4063         return 0;
4064     }
4065
4066     node = cql_parser_result(parser);
4067     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4068
4069     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4070     if (cqlfile == 0) {
4071         cql_parser_destroy(parser);
4072         cql_node_destroy(node);
4073         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4074         return 0;
4075     }
4076
4077     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4078         char buf[512];
4079         cql_parser_destroy(parser);
4080         cql_node_destroy(node);
4081         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4082                 cqlfile, strerror(errno));
4083         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4084         return 0;
4085     }
4086
4087     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4088     cql_parser_destroy(parser);
4089     cql_node_destroy(node);
4090     if (error != 0) {
4091         char buf[512];
4092         const char *addinfo;
4093         error = cql_transform_error(trans, &addinfo);
4094         cql_transform_close(trans);
4095         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4096         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4097         return 0;
4098     }
4099
4100     cql_transform_close(trans);
4101     return xstrdup(pqfbuf);
4102 }
4103
4104
4105 /*
4106  * Local variables:
4107  * c-basic-offset: 4
4108  * indent-tabs-mode: nil
4109  * End:
4110  * vim: shiftwidth=4 tabstop=8 expandtab
4111  */
4112