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 1.72 2006-05-10 07:34:38 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include "zoom-p.h"
  16
  17 #include <yaz/yaz-util.h>
  18 #include <yaz/xmalloc.h>
  19 #include <yaz/otherinfo.h>
  20 #include <yaz/log.h>
  21 #include <yaz/pquery.h>
  22 #include <yaz/marcdisp.h>
  23 #include <yaz/diagbib1.h>
  24 #include <yaz/charneg.h>
  25 #include <yaz/ill.h>
  26 #include <yaz/srw.h>
  27 #include <yaz/cql.h>
  28
  29 #if HAVE_SYS_TYPES_H
  30 #include <sys/types.h>
  31 #endif
  32 #if HAVE_SYS_TIME_H
  33 #include <sys/time.h>
  34 #endif
  35 #if HAVE_SYS_POLL_H
  36 #include <sys/poll.h>
  37 #endif
  38 #if HAVE_SYS_SELECT_H
  39 #include <sys/select.h>
  40 #endif
  41 #ifdef WIN32
  42 #include <winsock.h>
  43 #endif
  44
  45 static int log_api = 0;
  46 static int log_details = 0;
  47
  48 typedef enum {
  49     zoom_pending,
  50     zoom_complete
  51 } zoom_ret;
  52
  53 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  54 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  55 static char *cql2pqf(ZOOM_connection c, const char *cql);
  56
  57 static void initlog()
  58 {
  59     static int log_level_initialized = 0;
  60     if (!log_level_initialized)
  61     {
  62         log_api = yaz_log_module_level("zoom");
  63         log_details = yaz_log_module_level("zoomdetails");
  64         log_level_initialized = 1;
  65     }
  66 }
  67
  68 static ZOOM_Event ZOOM_Event_create (int kind)
  69 {
  70     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  71     event->kind = kind;
  72     event->next = 0;
  73     event->prev = 0;
  74     return event;
  75 }
  76
  77 static void ZOOM_Event_destroy (ZOOM_Event event)
  78 {
  79     xfree (event);
  80 }
  81
  82 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  83 {
  84     if (c->m_queue_back)
  85     {
  86         c->m_queue_back->prev = event;
  87         assert (c->m_queue_front);
  88     }
  89     else
  90     {
  91         assert (!c->m_queue_front);
  92         c->m_queue_front = event;
  93     }
  94     event->next = c->m_queue_back;
  95     event->prev = 0;
  96     c->m_queue_back = event;
  97 }
  98
  99 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 100 {
 101     ZOOM_Event event = c->m_queue_front;
 102     if (!event)
 103     {
 104         c->last_event = ZOOM_EVENT_NONE;
 105         return 0;
 106     }
 107     assert (c->m_queue_back);
 108     c->m_queue_front = event->prev;
 109     if (c->m_queue_front)
 110     {
 111         assert (c->m_queue_back);
 112         c->m_queue_front->next = 0;
 113     }
 114     else
 115         c->m_queue_back = 0;
 116     c->last_event = event->kind;
 117     return event;
 118 }
 119
 120
 121 static void set_dset_error (ZOOM_connection c, int error,
 122                             const char *dset,
 123                             const char *addinfo, const char *addinfo2)
 124 {
 125     char *cp;
 126
 127     xfree (c->addinfo);
 128     c->addinfo = 0;
 129     c->error = error;
 130     if (!c->diagset || strcmp(dset, c->diagset))
 131     {
 132         xfree(c->diagset);
 133         c->diagset = xstrdup(dset);
 134         /* remove integer part from SRW diagset .. */
 135         if ((cp = strrchr(c->diagset, '/')))
 136            *cp = '\0';
 137     }
 138     if (addinfo && addinfo2)
 139     {
 140         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 141         strcpy(c->addinfo, addinfo);
 142         strcat(c->addinfo, addinfo2);
 143     }
 144     else if (addinfo)
 145         c->addinfo = xstrdup(addinfo);
 146     if (error)
 147         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 148                 c, c->host_port ? c->host_port : "<>", dset, error,
 149                 addinfo ? addinfo : "",
 150                 addinfo2 ? addinfo2 : "");
 151 }
 152
 153 #if HAVE_XML2
 154 static void set_HTTP_error (ZOOM_connection c, int error,
 155                             const char *addinfo, const char *addinfo2)
 156 {
 157     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 158 }
 159 #endif
 160
 161 static void set_ZOOM_error (ZOOM_connection c, int error,
 162                             const char *addinfo)
 163 {
 164     set_dset_error(c, error, "ZOOM", addinfo, 0);
 165 }
 166
 167 static void clear_error (ZOOM_connection c)
 168 {
 169     /*
 170      * If an error is tied to an operation then it's ok to clear: for
 171      * example, a diagnostic returned from a search is cleared by a
 172      * subsequent search.  However, problems such as Connection Lost
 173      * or Init Refused are not cleared, because they are not
 174      * recoverable: doing another search doesn't help.
 175      */
 176     switch (c->error)
 177     {
 178     case ZOOM_ERROR_CONNECT:
 179     case ZOOM_ERROR_MEMORY:
 180     case ZOOM_ERROR_DECODE:
 181     case ZOOM_ERROR_CONNECTION_LOST:
 182     case ZOOM_ERROR_INIT:
 183     case ZOOM_ERROR_INTERNAL:
 184     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 185         break;
 186     default:
 187         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 188     }
 189 }
 190
 191 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 192 {
 193     ZOOM_task *taskp = &c->tasks;
 194     while (*taskp)
 195         taskp = &(*taskp)->next;
 196     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 197     (*taskp)->running = 0;
 198     (*taskp)->which = which;
 199     (*taskp)->next = 0;
 200     clear_error (c);
 201     return *taskp;
 202 }
 203
 204 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 205 {
 206     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 207
 208     task->next = c->tasks;
 209     c->tasks = task;
 210
 211     task->running = 0;
 212     task->which = which;
 213     clear_error (c);
 214     return task;
 215 }
 216
 217 void ZOOM_connection_remove_task (ZOOM_connection c)
 218 {
 219     ZOOM_task task = c->tasks;
 220
 221     if (task)
 222     {
 223         c->tasks = task->next;
 224         switch (task->which)
 225         {
 226         case ZOOM_TASK_SEARCH:
 227             ZOOM_resultset_destroy (task->u.search.resultset);
 228             break;
 229         case ZOOM_TASK_RETRIEVE:
 230             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 231             break;
 232         case ZOOM_TASK_CONNECT:
 233             break;
 234         case ZOOM_TASK_SCAN:
 235             ZOOM_scanset_destroy (task->u.scan.scan);
 236             break;
 237         case ZOOM_TASK_PACKAGE:
 238             ZOOM_package_destroy (task->u.package);
 239             break;
 240         case ZOOM_TASK_SORT:
 241             ZOOM_resultset_destroy (task->u.sort.resultset);
 242             ZOOM_query_destroy(task->u.sort.q);
 243             break;
 244         default:
 245             assert (0);
 246         }
 247         xfree (task);
 248
 249         if (!c->tasks)
 250         {
 251             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 252             ZOOM_connection_put_event(c, event);
 253         }
 254     }
 255 }
 256
 257 static int ZOOM_connection_exec_task (ZOOM_connection c);
 258
 259 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 260 {
 261     while (c->tasks)
 262         ZOOM_connection_remove_task(c);
 263 }
 264
 265 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 266
 267 ZOOM_API(ZOOM_connection)
 268 ZOOM_connection_create (ZOOM_options options)
 269 {
 270     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 271
 272     initlog();
 273
 274     yaz_log(log_api, "%p ZOOM_connection_create", c);
 275
 276     c->proto = PROTO_Z3950;
 277     c->cs = 0;
 278     c->mask = 0;
 279     c->reconnect_ok = 0;
 280     c->state = STATE_IDLE;
 281     c->addinfo = 0;
 282     c->diagset = 0;
 283     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 284     c->buf_in = 0;
 285     c->len_in = 0;
 286     c->buf_out = 0;
 287     c->len_out = 0;
 288     c->resultsets = 0;
 289
 290     c->options = ZOOM_options_create_with_parent(options);
 291
 292     c->host_port = 0;
 293     c->path = 0;
 294     c->proxy = 0;
 295
 296     c->charset = c->lang = 0;
 297
 298     c->cookie_out = 0;
 299     c->cookie_in = 0;
 300     c->client_IP = 0;
 301     c->tasks = 0;
 302
 303     c->odr_in = odr_createmem (ODR_DECODE);
 304     c->odr_out = odr_createmem (ODR_ENCODE);
 305
 306     c->async = 0;
 307     c->support_named_resultsets = 0;
 308     c->last_event = ZOOM_EVENT_NONE;
 309
 310     c->m_queue_front = 0;
 311     c->m_queue_back = 0;
 312     return c;
 313 }
 314
 315 /* set database names. Take local databases (if set); otherwise
 316    take databases given in ZURL (if set); otherwise use Default */
 317 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 318                                  int *num)
 319 {
 320     char **databaseNames;
 321     const char *cp = ZOOM_options_get (options, "databaseName");
 322
 323     if ((!cp || !*cp) && con->host_port)
 324     {
 325         if (strncmp (con->host_port, "unix:", 5) == 0)
 326             cp = strchr(con->host_port+5, ':');
 327         else
 328             cp = strchr(con->host_port, '/');
 329         if (cp)
 330             cp++;
 331     }
 332     if (!cp)
 333         cp = "Default";
 334     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 335     return databaseNames;
 336 }
 337
 338 ZOOM_API(ZOOM_connection)
 339 ZOOM_connection_new (const char *host, int portnum)
 340 {
 341     ZOOM_connection c = ZOOM_connection_create (0);
 342
 343     ZOOM_connection_connect (c, host, portnum);
 344     return c;
 345 }
 346
 347 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 348 {
 349     if (!s || !*s)
 350         return zoom_sru_soap;
 351     if (!yaz_matchstr(s, "soap"))
 352         return zoom_sru_soap;
 353     else if (!yaz_matchstr(s, "get"))
 354         return zoom_sru_get;
 355     else if (!yaz_matchstr(s, "post"))
 356         return zoom_sru_post;
 357     return zoom_sru_error;
 358 }
 359
 360 ZOOM_API(void)
 361 ZOOM_connection_connect(ZOOM_connection c,
 362                         const char *host, int portnum)
 363 {
 364     const char *val;
 365     ZOOM_task task;
 366
 367     initlog();
 368
 369     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 370             c, host, portnum);
 371
 372     if (c->cs)
 373     {
 374         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 375         c->reconnect_ok = 1;
 376         return;
 377     }
 378     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 379     xfree (c->proxy);
 380     val = ZOOM_options_get (c->options, "proxy");
 381     if (val && *val)
 382     {
 383         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 384         c->proxy = xstrdup (val);
 385     }
 386     else
 387         c->proxy = 0;
 388
 389     xfree (c->charset);
 390     val = ZOOM_options_get (c->options, "charset");
 391     if (val && *val)
 392     {
 393         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 394         c->charset = xstrdup (val);
 395     }
 396     else
 397         c->charset = 0;
 398
 399     xfree (c->lang);
 400     val = ZOOM_options_get (c->options, "lang");
 401     if (val && *val)
 402     {
 403         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 404         c->lang = xstrdup (val);
 405     }
 406     else
 407         c->lang = 0;
 408
 409     val = ZOOM_options_get (c->options, "sru");
 410     c->sru_mode = get_sru_mode_from_string(val);
 411
 412     xfree (c->host_port);
 413     if (portnum)
 414     {
 415         char hostn[128];
 416         sprintf (hostn, "%.80s:%d", host, portnum);
 417         c->host_port = xstrdup(hostn);
 418     }
 419     else
 420         c->host_port = xstrdup(host);
 421
 422     {
 423         /*
 424          * If the "<scheme>:" part of the host string is preceded by one
 425          * or more comma-separated <name>=<value> pairs, these are taken
 426          * to be options to be set on the connection object.  Among other
 427          * applications, this facility can be used to embed authentication
 428          * in a host string:
 429          *          user=admin,password=secret,tcp:localhost:9999
 430          */
 431         char *remainder = c->host_port;
 432         char *pcolon = strchr(remainder, ':');
 433         char *pcomma;
 434         char *pequals;
 435         while ((pcomma = strchr(remainder, ',')) != 0 &&
 436                (pcolon == 0 || pcomma < pcolon)) {
 437             *pcomma = '\0';
 438             if ((pequals = strchr(remainder, '=')) != 0) {
 439                 *pequals = '\0';
 440                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 441                 ZOOM_connection_option_set(c, remainder, pequals+1);
 442             }
 443             remainder = pcomma+1;
 444         }
 445
 446         if (remainder != c->host_port) {
 447             xfree(c->host_port);
 448             c->host_port = xstrdup(remainder);
 449             /*printf("# reset hp='%s'\n", remainder);*/
 450         }
 451     }
 452
 453     ZOOM_options_set(c->options, "host", c->host_port);
 454
 455     val = ZOOM_options_get (c->options, "cookie");
 456     if (val && *val)
 457     {
 458         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 459         c->cookie_out = xstrdup (val);
 460     }
 461
 462     val = ZOOM_options_get (c->options, "clientIP");
 463     if (val && *val)
 464     {
 465         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 466                 c, val);
 467         c->client_IP = xstrdup (val);
 468     }
 469
 470     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 471     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 472
 473     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 474
 475     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 476
 477     if (!c->async)
 478     {
 479         while (ZOOM_event (1, &c))
 480             ;
 481     }
 482 }
 483
 484 ZOOM_API(ZOOM_query)
 485 ZOOM_query_create(void)
 486 {
 487     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 488
 489     yaz_log(log_details, "%p ZOOM_query_create", s);
 490     s->refcount = 1;
 491     s->z_query = 0;
 492     s->sort_spec = 0;
 493     s->odr = odr_createmem (ODR_ENCODE);
 494     s->query_string = 0;
 495
 496     return s;
 497 }
 498
 499 ZOOM_API(void)
 500 ZOOM_query_destroy(ZOOM_query s)
 501 {
 502     if (!s)
 503         return;
 504
 505     (s->refcount)--;
 506     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 507     if (s->refcount == 0)
 508     {
 509         odr_destroy (s->odr);
 510         xfree (s);
 511     }
 512 }
 513
 514 ZOOM_API(int)
 515 ZOOM_query_prefix(ZOOM_query s, const char *str)
 516 {
 517     s->query_string = odr_strdup(s->odr, str);
 518     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 519     s->z_query->which = Z_Query_type_1;
 520     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 521     if (!s->z_query->u.type_1)
 522     {
 523         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 524         s->z_query = 0;
 525         return -1;
 526     }
 527     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 528     return 0;
 529 }
 530
 531 ZOOM_API(int)
 532 ZOOM_query_cql(ZOOM_query s, const char *str)
 533 {
 534     Z_External *ext;
 535
 536     s->query_string = odr_strdup(s->odr, str);
 537
 538     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 539     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 540     ext->indirect_reference = 0;
 541     ext->descriptor = 0;
 542     ext->which = Z_External_CQL;
 543     ext->u.cql = s->query_string;
 544
 545     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 546     s->z_query->which = Z_Query_type_104;
 547     s->z_query->u.type_104 =  ext;
 548
 549     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 550
 551     return 0;
 552 }
 553
 554 /*
 555  * Translate the CQL string client-side into RPN which is passed to
 556  * the server.  This is useful for server's that don't themselves
 557  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 558  * only as a place to stash diagnostics if compilation fails; if this
 559  * information is not needed, a null pointer may be used.
 560  */
 561 ZOOM_API(int)
 562 ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 563 {
 564     char *rpn;
 565     int ret;
 566
 567     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 568     if (conn == 0)
 569         conn = ZOOM_connection_create(0);
 570
 571     if ((rpn = cql2pqf(conn, str)) == 0)
 572         return -1;
 573
 574     ret = ZOOM_query_prefix(s, rpn);
 575     xfree(rpn);
 576     return ret;
 577 }
 578
 579 ZOOM_API(int)
 580 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 581 {
 582     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 583     if (!s->sort_spec)
 584     {
 585         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 586                 s, criteria);
 587         return -1;
 588     }
 589     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 590     return 0;
 591 }
 592
 593 static zoom_ret do_write(ZOOM_connection c);
 594
 595 ZOOM_API(void)
 596 ZOOM_connection_destroy(ZOOM_connection c)
 597 {
 598     ZOOM_resultset r;
 599     if (!c)
 600         return;
 601     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 602     if (c->cs)
 603         cs_close (c->cs);
 604     for (r = c->resultsets; r; r = r->next)
 605         r->connection = 0;
 606
 607     xfree (c->buf_in);
 608     xfree (c->addinfo);
 609     xfree (c->diagset);
 610     odr_destroy (c->odr_in);
 611     odr_destroy (c->odr_out);
 612     ZOOM_options_destroy (c->options);
 613     ZOOM_connection_remove_tasks (c);
 614     xfree (c->host_port);
 615     xfree (c->path);
 616     xfree (c->proxy);
 617     xfree (c->charset);
 618     xfree (c->lang);
 619     xfree (c->cookie_out);
 620     xfree (c->cookie_in);
 621     xfree (c->client_IP);
 622     xfree (c);
 623 }
 624
 625 void ZOOM_resultset_addref (ZOOM_resultset r)
 626 {
 627     if (r)
 628     {
 629         (r->refcount)++;
 630         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 631                 r, r->refcount);
 632     }
 633 }
 634
 635 ZOOM_resultset ZOOM_resultset_create ()
 636 {
 637     int i;
 638     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 639
 640     initlog();
 641
 642     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 643     r->refcount = 1;
 644     r->size = 0;
 645     r->odr = odr_createmem (ODR_ENCODE);
 646     r->start = 0;
 647     r->piggyback = 1;
 648     r->setname = 0;
 649     r->schema = 0;
 650     r->count = 0;
 651     r->step = 0;
 652     for (i = 0; i<RECORD_HASH_SIZE; i++)
 653         r->record_hash[i] = 0;
 654     r->r_sort_spec = 0;
 655     r->query = 0;
 656     r->connection = 0;
 657     r->next = 0;
 658     return r;
 659 }
 660
 661 ZOOM_API(ZOOM_resultset)
 662 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 663 {
 664     ZOOM_resultset r;
 665     ZOOM_query s = ZOOM_query_create();
 666
 667     ZOOM_query_prefix (s, q);
 668
 669     r = ZOOM_connection_search (c, s);
 670     ZOOM_query_destroy (s);
 671     return r;
 672 }
 673
 674 ZOOM_API(ZOOM_resultset)
 675 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 676 {
 677     ZOOM_resultset r = ZOOM_resultset_create ();
 678     ZOOM_task task;
 679     const char *cp;
 680
 681     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 682     r->r_sort_spec = q->sort_spec;
 683     r->query = q;
 684
 685     r->options = ZOOM_options_create_with_parent(c->options);
 686
 687     r->start = ZOOM_options_get_int(r->options, "start", 0);
 688     r->count = ZOOM_options_get_int(r->options, "count", 0);
 689     {
 690         /* If "presentChunk" is defined use that; otherwise "step" */
 691         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 692         r->step = ZOOM_options_get_int(r->options,
 693                                        (cp != 0 ? "presentChunk": "step"), 0);
 694     }
 695     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 696     cp = ZOOM_options_get (r->options, "setname");
 697     if (cp)
 698         r->setname = xstrdup(cp);
 699     cp = ZOOM_options_get (r->options, "schema");
 700     if (cp)
 701         r->schema = xstrdup(cp);
 702
 703     r->connection = c;
 704
 705     r->next = c->resultsets;
 706     c->resultsets = r;
 707
 708     if (c->host_port && c->proto == PROTO_HTTP)
 709     {
 710         if (!c->cs)
 711         {
 712             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 713             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 714         }
 715         else
 716         {
 717             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 718             c->reconnect_ok = 1;
 719         }
 720     }
 721
 722     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 723     task->u.search.resultset = r;
 724     ZOOM_resultset_addref (r);
 725
 726     (q->refcount)++;
 727
 728     if (!c->async)
 729     {
 730         while (ZOOM_event (1, &c))
 731             ;
 732     }
 733     return r;
 734 }
 735
 736 /*
 737  * This is the old result-set sorting API, which is maintained only
 738  * for the sake of binary compatibility.  There is no reason ever to
 739  * use this rather than ZOOM_resultset_sort1().
 740  */
 741 ZOOM_API(void)
 742 ZOOM_resultset_sort(ZOOM_resultset r,
 743                     const char *sort_type, const char *sort_spec)
 744 {
 745     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 746 }
 747
 748 ZOOM_API(int)
 749 ZOOM_resultset_sort1(ZOOM_resultset r,
 750                      const char *sort_type, const char *sort_spec)
 751 {
 752     ZOOM_connection c = r->connection;
 753     ZOOM_task task;
 754     ZOOM_query newq;
 755
 756     newq = ZOOM_query_create();
 757     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 758         return -1;
 759
 760     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 761             r, r, sort_type, sort_spec);
 762     if (!c)
 763         return 0;
 764
 765     if (c->host_port && c->proto == PROTO_HTTP)
 766     {
 767         if (!c->cs)
 768         {
 769             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 770             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 771         }
 772         else
 773         {
 774             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 775                     r);
 776             c->reconnect_ok = 1;
 777         }
 778     }
 779
 780     ZOOM_resultset_cache_reset(r);
 781     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 782     task->u.sort.resultset = r;
 783     task->u.sort.q = newq;
 784
 785     ZOOM_resultset_addref (r);
 786
 787     if (!c->async)
 788     {
 789         while (ZOOM_event (1, &c))
 790             ;
 791     }
 792
 793     return 0;
 794 }
 795
 796 ZOOM_API(void)
 797     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 798 {
 799     int i;
 800     for (i = 0; i<RECORD_HASH_SIZE; i++)
 801     {
 802         ZOOM_record_cache rc;
 803         for (rc = r->record_hash[i]; rc; rc = rc->next)
 804         {
 805             if (rc->rec.wrbuf_marc)
 806                 wrbuf_free (rc->rec.wrbuf_marc, 1);
 807             if (rc->rec.wrbuf_iconv)
 808                 wrbuf_free (rc->rec.wrbuf_iconv, 1);
 809             if (rc->rec.wrbuf_opac)
 810                 wrbuf_free (rc->rec.wrbuf_opac, 1);
 811         }
 812         r->record_hash[i] = 0;
 813     }
 814 }
 815
 816 ZOOM_API(void)
 817 ZOOM_resultset_destroy(ZOOM_resultset r)
 818 {
 819     if (!r)
 820         return;
 821     (r->refcount)--;
 822     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 823             r, r, r->refcount);
 824     if (r->refcount == 0)
 825     {
 826         ZOOM_resultset_cache_reset(r);
 827
 828         if (r->connection)
 829         {
 830             /* remove ourselves from the resultsets in connection */
 831             ZOOM_resultset *rp = &r->connection->resultsets;
 832             while (1)
 833             {
 834                 assert (*rp);   /* we must be in this list!! */
 835                 if (*rp == r)
 836                 {   /* OK, we're here - take us out of it */
 837                     *rp = (*rp)->next;
 838                     break;
 839                 }
 840                 rp = &(*rp)->next;
 841             }
 842         }
 843         ZOOM_query_destroy (r->query);
 844         ZOOM_options_destroy (r->options);
 845         odr_destroy (r->odr);
 846         xfree (r->setname);
 847         xfree (r->schema);
 848         xfree (r);
 849     }
 850 }
 851
 852 ZOOM_API(size_t)
 853 ZOOM_resultset_size (ZOOM_resultset r)
 854 {
 855     return r->size;
 856 }
 857
 858 static void do_close (ZOOM_connection c)
 859 {
 860     if (c->cs)
 861         cs_close(c->cs);
 862     c->cs = 0;
 863     c->mask = 0;
 864     c->state = STATE_IDLE;
 865 }
 866
 867 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 868                                      int force_sync, int start, int count)
 869 {
 870     ZOOM_task task;
 871     ZOOM_connection c;
 872     const char *cp;
 873
 874     if (!r)
 875         return;
 876     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 877             " count=%d", r, force_sync, start, count);
 878     c = r->connection;
 879     if (!c)
 880         return;
 881
 882     if (c->host_port && c->proto == PROTO_HTTP)
 883     {
 884         if (!c->cs)
 885         {
 886             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 887             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 888         }
 889         else
 890         {
 891             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 892                     "reconnect", r);
 893             c->reconnect_ok = 1;
 894         }
 895     }
 896     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 897     task->u.retrieve.resultset = r;
 898     task->u.retrieve.start = start;
 899     task->u.retrieve.count = count;
 900
 901     cp = ZOOM_options_get (r->options, "schema");
 902     if (cp)
 903     {
 904         if (!r->schema || strcmp(r->schema, cp))
 905         {
 906             xfree(r->schema);
 907             r->schema = xstrdup(cp);
 908         }
 909     }
 910
 911     ZOOM_resultset_addref (r);
 912
 913     if (!r->connection->async || force_sync)
 914         while (r->connection && ZOOM_event (1, &r->connection))
 915             ;
 916 }
 917
 918 ZOOM_API(void)
 919 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 920                         size_t start, size_t count)
 921 {
 922     int force_present = 0;
 923
 924     if (!r)
 925         return ;
 926     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
 927             r, r, (long) start, (long) count);
 928     if (count && recs)
 929         force_present = 1;
 930     ZOOM_resultset_retrieve (r, force_present, start, count);
 931     if (force_present)
 932     {
 933         size_t i;
 934         for (i = 0; i< count; i++)
 935             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 936     }
 937 }
 938
 939 static void get_cert(ZOOM_connection c)
 940 {
 941     char *cert_buf;
 942     int cert_len;
 943
 944     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 945     {
 946         ZOOM_connection_option_setl(c, "sslPeerCert",
 947                                     cert_buf, cert_len);
 948         xfree(cert_buf);
 949     }
 950 }
 951
 952 static zoom_ret do_connect (ZOOM_connection c)
 953 {
 954     void *add;
 955     const char *effective_host;
 956
 957     if (c->proxy)
 958         effective_host = c->proxy;
 959     else
 960         effective_host = c->host_port;
 961
 962     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
 963
 964     if (c->cs)
 965         cs_close(c->cs);
 966     c->cs = cs_create_host (effective_host, 0, &add);
 967
 968     if (c->cs && c->cs->protocol == PROTO_HTTP)
 969     {
 970 #if HAVE_XML2
 971         const char *path = 0;
 972
 973         c->proto = PROTO_HTTP;
 974         cs_get_host_args(c->host_port, &path);
 975         xfree(c->path);
 976         c->path = (char*) xmalloc(strlen(path)+2);
 977         c->path[0] = '/';
 978         strcpy (c->path+1, path);
 979 #else
 980         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 981         do_close(c);
 982         return zoom_complete;
 983 #endif
 984     }
 985     if (c->cs)
 986     {
 987         int ret = cs_connect (c->cs, add);
 988         if (ret == 0)
 989         {
 990             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 991             ZOOM_connection_put_event(c, event);
 992             get_cert(c);
 993             if (c->proto == PROTO_Z3950)
 994                 ZOOM_connection_send_init(c);
 995             else
 996             {
 997                 /* no init request for SRW .. */
 998                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 999                 ZOOM_connection_remove_task (c);
1000                 c->mask = 0;
1001                 ZOOM_connection_exec_task (c);
1002             }
1003             c->state = STATE_ESTABLISHED;
1004             return zoom_pending;
1005         }
1006         else if (ret > 0)
1007         {
1008             c->state = STATE_CONNECTING;
1009             c->mask = ZOOM_SELECT_EXCEPT;
1010             if (c->cs->io_pending & CS_WANT_WRITE)
1011                 c->mask += ZOOM_SELECT_WRITE;
1012             if (c->cs->io_pending & CS_WANT_READ)
1013                 c->mask += ZOOM_SELECT_READ;
1014             return zoom_pending;
1015         }
1016     }
1017     c->state = STATE_IDLE;
1018     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1019     return zoom_complete;
1020 }
1021
1022 int z3950_connection_socket(ZOOM_connection c)
1023 {
1024     if (c->cs)
1025         return cs_fileno(c->cs);
1026     return -1;
1027 }
1028
1029 int z3950_connection_mask(ZOOM_connection c)
1030 {
1031     if (c->cs)
1032         return c->mask;
1033     return 0;
1034 }
1035
1036 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
1037 {
1038     int i;
1039     for (i = 0; i<200; i++)
1040     {
1041         size_t len;
1042         Z_OtherInformation **oi;
1043         char buf[80];
1044         const char *val;
1045         const char *cp;
1046         int oidval;
1047
1048         sprintf (buf, "otherInfo%d", i);
1049         val = ZOOM_options_get (c->options, buf);
1050         if (!val)
1051             break;
1052         cp = strchr(val, ':');
1053         if (!cp)
1054             continue;
1055         len = cp - val;
1056         if (len >= sizeof(buf))
1057             len = sizeof(buf)-1;
1058         memcpy (buf, val, len);
1059         buf[len] = '\0';
1060         oidval = oid_getvalbyname (buf);
1061         if (oidval == VAL_NONE)
1062             continue;
1063
1064         yaz_oi_APDU(a, &oi);
1065         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1066     }
1067 }
1068
1069 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1070 {
1071     assert (a);
1072     if (c->cookie_out)
1073     {
1074         Z_OtherInformation **oi;
1075         yaz_oi_APDU(a, &oi);
1076         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1077     }
1078     if (c->client_IP)
1079     {
1080         Z_OtherInformation **oi;
1081         yaz_oi_APDU(a, &oi);
1082         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1083     }
1084     otherInfo_attach (c, a, out);
1085     if (!z_APDU(out, &a, 0, 0))
1086     {
1087         FILE *outf = fopen("/tmp/apdu.txt", "a");
1088         if (a && outf)
1089         {
1090             ODR odr_pr = odr_createmem(ODR_PRINT);
1091             fprintf (outf, "a=%p\n", a);
1092             odr_setprint(odr_pr, outf);
1093             z_APDU(odr_pr, &a, 0, 0);
1094             odr_destroy(odr_pr);
1095         }
1096         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1097         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1098         odr_reset(out);
1099         return -1;
1100     }
1101     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1102     return 0;
1103 }
1104
1105 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
1106 {
1107     ZOOM_Event event;
1108     assert (a);
1109     if (encode_APDU(c, a, c->odr_out))
1110         return zoom_complete;
1111     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1112     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1113     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1114     ZOOM_connection_put_event (c, event);
1115     odr_reset(c->odr_out);
1116     return do_write (c);
1117 }
1118
1119 /* returns 1 if PDU was sent OK (still pending )
1120            0 if PDU was not sent OK (nothing to wait for)
1121 */
1122
1123 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1124 {
1125     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1126     Z_InitRequest *ireq = apdu->u.initRequest;
1127     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1128         odr_malloc(c->odr_out, sizeof(*auth));
1129     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1130     const char *auth_userId = ZOOM_options_get (c->options, "user");
1131     const char *auth_password = ZOOM_options_get (c->options, "password");
1132     char *version;
1133
1134     /* support the pass for backwards compatibility */
1135     if (!auth_password)
1136         auth_password = ZOOM_options_get (c->options, "pass");
1137
1138     ODR_MASK_SET(ireq->options, Z_Options_search);
1139     ODR_MASK_SET(ireq->options, Z_Options_present);
1140     ODR_MASK_SET(ireq->options, Z_Options_scan);
1141     ODR_MASK_SET(ireq->options, Z_Options_sort);
1142     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1143     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1144
1145     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1146     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1147     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1148
1149     /* Index Data's Z39.50 Implementor Id is 81 */
1150     ireq->implementationId = odr_prepend(c->odr_out,
1151         ZOOM_options_get(c->options, "implementationId"),
1152         odr_prepend(c->odr_out, "81", ireq->implementationId));
1153
1154     ireq->implementationName = odr_prepend(c->odr_out,
1155         ZOOM_options_get(c->options, "implementationName"),
1156         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1157
1158     version = odr_strdup(c->odr_out, "$Revision: 1.72 $");
1159     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1160         version[strlen(version)-2] = '\0';
1161     ireq->implementationVersion = odr_prepend(c->odr_out,
1162         ZOOM_options_get(c->options, "implementationVersion"),
1163         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1164
1165     *ireq->maximumRecordSize =
1166         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1167     *ireq->preferredMessageSize =
1168         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1169
1170     if (auth_groupId || auth_password)
1171     {
1172         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1173         int i = 0;
1174         pass->groupId = 0;
1175         if (auth_groupId && *auth_groupId)
1176         {
1177             pass->groupId = (char *)
1178                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1179             strcpy(pass->groupId, auth_groupId);
1180             i++;
1181         }
1182         pass->userId = 0;
1183         if (auth_userId && *auth_userId)
1184         {
1185             pass->userId = (char *)
1186                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1187             strcpy(pass->userId, auth_userId);
1188             i++;
1189         }
1190         pass->password = 0;
1191         if (auth_password && *auth_password)
1192         {
1193             pass->password = (char *)
1194                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1195             strcpy(pass->password, auth_password);
1196             i++;
1197         }
1198         if (i)
1199         {
1200             auth->which = Z_IdAuthentication_idPass;
1201             auth->u.idPass = pass;
1202             ireq->idAuthentication = auth;
1203         }
1204     }
1205     else if (auth_userId)
1206     {
1207         auth->which = Z_IdAuthentication_open;
1208         auth->u.open = (char *)
1209             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1210         strcpy(auth->u.open, auth_userId);
1211         ireq->idAuthentication = auth;
1212     }
1213     if (c->proxy)
1214         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1215                                  VAL_PROXY, 1, c->host_port);
1216     if (c->charset || c->lang)
1217     {
1218         Z_OtherInformation **oi;
1219         Z_OtherInformationUnit *oi_unit;
1220
1221         yaz_oi_APDU(apdu, &oi);
1222
1223         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1224         {
1225             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1226             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1227             oi_unit->information.externallyDefinedInfo =
1228                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1229                                               c->charset, c->lang, 1);
1230         }
1231     }
1232     assert (apdu);
1233     return send_APDU (c, apdu);
1234 }
1235
1236 #if HAVE_XML2
1237 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1238 {
1239     Z_SOAP_Handler h[2] = {
1240         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1241         {0, 0, 0}
1242     };
1243     ODR o = odr_createmem(ODR_ENCODE);
1244     int ret;
1245     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1246     Z_GDU *gdu;
1247     ZOOM_Event event;
1248
1249     gdu = z_get_HTTP_Request(c->odr_out);
1250     gdu->u.HTTP_Request->path = c->path;
1251
1252     if (c->host_port)
1253     {
1254         const char *cp0 = strstr(c->host_port, "://");
1255         const char *cp1 = 0;
1256         if (cp0)
1257             cp0 = cp0+3;
1258         else
1259             cp0 = c->host_port;
1260
1261         cp1 = strchr(cp0, '/');
1262         if (!cp1)
1263             cp1 = cp0+strlen(cp0);
1264
1265         if (cp0 && cp1)
1266         {
1267             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1268             memcpy (h, cp0, cp1 - cp0);
1269             h[cp1-cp0] = '\0';
1270             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1271                               "Host", h);
1272         }
1273     }
1274
1275     if (c->sru_mode == zoom_sru_get)
1276     {
1277         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1278     }
1279     else if (c->sru_mode == zoom_sru_post)
1280     {
1281         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1282     }
1283     else if (c->sru_mode == zoom_sru_soap)
1284     {
1285         z_HTTP_header_add_content_type(c->odr_out,
1286                                        &gdu->u.HTTP_Request->headers,
1287                                        "text/xml", c->charset);
1288
1289         z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1290                           "SOAPAction", "\"\"");
1291         p->which = Z_SOAP_generic;
1292         p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1293         p->u.generic->no = 0;
1294         p->u.generic->ns = 0;
1295         p->u.generic->p = sr;
1296         p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1297
1298         ret = z_soap_codec_enc(o, &p,
1299                                &gdu->u.HTTP_Request->content_buf,
1300                                &gdu->u.HTTP_Request->content_len, h,
1301                                c->charset);
1302
1303     }
1304     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1305         return zoom_complete;
1306     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1307     odr_destroy(o);
1308
1309     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1310     ZOOM_connection_put_event (c, event);
1311     odr_reset(c->odr_out);
1312     return do_write (c);
1313 }
1314 #endif
1315
1316 #if HAVE_XML2
1317 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1318 {
1319     int i;
1320     ZOOM_resultset resultset = 0;
1321     Z_SRW_PDU *sr = 0;
1322     const char *recordPacking = 0;
1323
1324     if (c->error)                  /* don't continue on error */
1325         return zoom_complete;
1326     assert (c->tasks);
1327     if (c->tasks->which == ZOOM_TASK_SEARCH)
1328     {
1329         resultset = c->tasks->u.search.resultset;
1330         resultset->setname = xstrdup ("default");
1331         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1332     }
1333     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1334     {
1335         resultset = c->tasks->u.retrieve.resultset;
1336
1337         resultset->start = c->tasks->u.retrieve.start;
1338         resultset->count = c->tasks->u.retrieve.count;
1339
1340         if (resultset->start >= resultset->size)
1341             return zoom_complete;
1342         if (resultset->start + resultset->count > resultset->size)
1343             resultset->count = resultset->size - resultset->start;
1344
1345         for (i = 0; i<resultset->count; i++)
1346         {
1347             ZOOM_record rec =
1348                 record_cache_lookup (resultset, i + resultset->start);
1349             if (!rec)
1350                 break;
1351         }
1352         if (i == resultset->count)
1353             return zoom_complete;
1354     }
1355     assert(resultset->query);
1356
1357     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1358
1359     if (resultset->query->z_query->which == Z_Query_type_104
1360         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1361     {
1362
1363         sr->u.request->query_type = Z_SRW_query_type_cql;
1364         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1365     }
1366     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1367              resultset->query->z_query->u.type_1)
1368     {
1369         sr->u.request->query_type = Z_SRW_query_type_pqf;
1370         sr->u.request->query.pqf = resultset->query->query_string;
1371     }
1372     else
1373     {
1374         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1375         return zoom_complete;
1376     }
1377     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1378     sr->u.request->maximumRecords = odr_intdup (
1379         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1380     sr->u.request->recordSchema = resultset->schema;
1381
1382     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1383
1384     if (recordPacking)
1385         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1386
1387     return send_srw(c, sr);
1388 }
1389 #else
1390 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1391 {
1392     return zoom_complete;
1393 }
1394 #endif
1395
1396 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1397 {
1398     ZOOM_resultset r;
1399     int lslb, ssub, mspn;
1400     const char *syntax;
1401     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1402     Z_SearchRequest *search_req = apdu->u.searchRequest;
1403     const char *elementSetName;
1404     const char *smallSetElementSetName;
1405     const char *mediumSetElementSetName;
1406
1407     assert (c->tasks);
1408     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1409
1410     r = c->tasks->u.search.resultset;
1411
1412     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1413
1414     elementSetName =
1415         ZOOM_options_get (r->options, "elementSetName");
1416     smallSetElementSetName  =
1417         ZOOM_options_get (r->options, "smallSetElementSetName");
1418     mediumSetElementSetName =
1419         ZOOM_options_get (r->options, "mediumSetElementSetName");
1420
1421     if (!smallSetElementSetName)
1422         smallSetElementSetName = elementSetName;
1423
1424     if (!mediumSetElementSetName)
1425         mediumSetElementSetName = elementSetName;
1426
1427     assert (r);
1428     assert (r->query);
1429
1430     /* prepare query for the search request */
1431     search_req->query = r->query->z_query;
1432     if (!search_req->query)
1433     {
1434         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1435         return zoom_complete;
1436     }
1437
1438     search_req->databaseNames =
1439         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1440
1441     /* get syntax (no need to provide unless piggyback is in effect) */
1442     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1443
1444     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1445     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1446     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1447     if (lslb != -1 && ssub != -1 && mspn != -1)
1448     {
1449         /* So're a Z39.50 expert? Let's hope you don't do sort */
1450         *search_req->largeSetLowerBound = lslb;
1451         *search_req->smallSetUpperBound = ssub;
1452         *search_req->mediumSetPresentNumber = mspn;
1453     }
1454     else if (r->start == 0 && r->count > 0
1455              && r->piggyback && !r->r_sort_spec && !r->schema)
1456     {
1457         /* Regular piggyback - do it unless we're going to do sort */
1458         *search_req->largeSetLowerBound = 2000000000;
1459         *search_req->smallSetUpperBound = 1;
1460         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1461     }
1462     else
1463     {
1464         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1465         smallSetElementSetName = 0;
1466         mediumSetElementSetName = 0;
1467         syntax = 0;
1468     }
1469     if (smallSetElementSetName && *smallSetElementSetName)
1470     {
1471         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1472             odr_malloc (c->odr_out, sizeof(*esn));
1473
1474         esn->which = Z_ElementSetNames_generic;
1475         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1476         search_req->smallSetElementSetNames = esn;
1477     }
1478     if (mediumSetElementSetName && *mediumSetElementSetName)
1479     {
1480         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1481             odr_malloc (c->odr_out, sizeof(*esn));
1482
1483         esn->which = Z_ElementSetNames_generic;
1484         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1485         search_req->mediumSetElementSetNames = esn;
1486     }
1487     if (syntax)
1488         search_req->preferredRecordSyntax =
1489             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1490
1491     if (!r->setname)
1492     {
1493         if (c->support_named_resultsets)
1494         {
1495             char setname[14];
1496             int ord;
1497             /* find the lowest unused ordinal so that we re-use
1498                result sets on the server. */
1499             for (ord = 1; ; ord++)
1500             {
1501                 ZOOM_resultset rp;
1502                 sprintf (setname, "%d", ord);
1503                 for (rp = c->resultsets; rp; rp = rp->next)
1504                     if (rp->setname && !strcmp (rp->setname, setname))
1505                         break;
1506                 if (!rp)
1507                     break;
1508             }
1509             r->setname = xstrdup (setname);
1510             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1511                     "set %s", c, r->setname);
1512         }
1513         else
1514         {
1515             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1516                     "default set", c);
1517             r->setname = xstrdup ("default");
1518         }
1519         ZOOM_options_set (r->options, "setname", r->setname);
1520     }
1521     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1522     return send_APDU (c, apdu);
1523 }
1524
1525 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1526 {
1527     int oclass;
1528     char *addinfo = 0;
1529
1530     switch (r->which)
1531     {
1532     case Z_DefaultDiagFormat_v2Addinfo:
1533         addinfo = r->u.v2Addinfo;
1534         break;
1535     case Z_DefaultDiagFormat_v3Addinfo:
1536         addinfo = r->u.v3Addinfo;
1537         break;
1538     }
1539     xfree (c->addinfo);
1540     c->addinfo = 0;
1541     set_dset_error(c, *r->condition,
1542                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1543                    addinfo, 0);
1544 }
1545
1546 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1547 {
1548     if (p->which != Z_DiagRec_defaultFormat)
1549         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1550     else
1551         response_default_diag(c, p->u.defaultFormat);
1552 }
1553
1554 ZOOM_API(ZOOM_record)
1555 ZOOM_record_clone (ZOOM_record srec)
1556 {
1557     char *buf;
1558     int size;
1559     ODR odr_enc;
1560     ZOOM_record nrec;
1561
1562     odr_enc = odr_createmem(ODR_ENCODE);
1563     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1564         return 0;
1565     buf = odr_getbuf (odr_enc, &size, 0);
1566
1567     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1568     nrec->odr = odr_createmem(ODR_DECODE);
1569     nrec->wrbuf_marc = 0;
1570     nrec->wrbuf_iconv = 0;
1571     nrec->wrbuf_opac = 0;
1572     odr_setbuf (nrec->odr, buf, size, 0);
1573     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1574
1575     odr_destroy (odr_enc);
1576     return nrec;
1577 }
1578
1579 ZOOM_API(ZOOM_record)
1580 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1581 {
1582     return record_cache_lookup (s, pos);
1583 }
1584
1585 ZOOM_API(ZOOM_record)
1586 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1587 {
1588     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1589
1590     if (!rec)
1591     {
1592         /*
1593          * MIKE: I think force_sync should always be zero, but I don't
1594          * want to make this change until I get the go-ahead from
1595          * Adam, in case something depends on the old synchronous
1596          * behaviour.
1597          */
1598         int force_sync = 1;
1599         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1600         ZOOM_resultset_retrieve (r, force_sync, pos, 1);
1601         rec = ZOOM_resultset_record_immediate (r, pos);
1602     }
1603     return rec;
1604 }
1605
1606 ZOOM_API(void)
1607 ZOOM_record_destroy (ZOOM_record rec)
1608 {
1609     if (!rec)
1610         return;
1611     if (rec->wrbuf_marc)
1612         wrbuf_free (rec->wrbuf_marc, 1);
1613     if (rec->wrbuf_iconv)
1614         wrbuf_free (rec->wrbuf_iconv, 1);
1615     if (rec->wrbuf_opac)
1616         wrbuf_free (rec->wrbuf_opac, 1);
1617     odr_destroy (rec->odr);
1618     xfree (rec);
1619 }
1620
1621 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1622                                      int *len,
1623                                      const char *buf, int sz,
1624                                      const char *record_charset)
1625 {
1626     char to[40];
1627     char from[40];
1628     yaz_iconv_t cd = 0;
1629     yaz_marc_t mt = yaz_marc_create();
1630
1631     *from = '\0';
1632     strcpy(to, "UTF-8");
1633     if (record_charset && *record_charset)
1634     {
1635         /* Use "from,to" or just "from" */
1636         const char *cp = strchr(record_charset, ',');
1637         int clen = strlen(record_charset);
1638         if (cp && cp[1])
1639         {
1640             strncpy( to, cp+1, sizeof(to)-1);
1641             to[sizeof(to)-1] = '\0';
1642             clen = cp - record_charset;
1643         }
1644         if (clen > sizeof(from)-1)
1645             clen = sizeof(from)-1;
1646
1647         if (clen)
1648             strncpy(from, record_charset, clen);
1649         from[clen] = '\0';
1650     }
1651
1652     if (*from && *to)
1653     {
1654         cd = yaz_iconv_open(to, from);
1655         yaz_marc_iconv(mt, cd);
1656     }
1657
1658     yaz_marc_xml(mt, marc_type);
1659     if (!rec->wrbuf_marc)
1660         rec->wrbuf_marc = wrbuf_alloc();
1661     wrbuf_rewind (rec->wrbuf_marc);
1662     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1663     {
1664         yaz_marc_destroy(mt);
1665         if (cd)
1666             yaz_iconv_close(cd);
1667         if (len)
1668             *len = wrbuf_len(rec->wrbuf_marc);
1669         return wrbuf_buf(rec->wrbuf_marc);
1670     }
1671     yaz_marc_destroy(mt);
1672     if (cd)
1673         yaz_iconv_close(cd);
1674     return 0;
1675 }
1676
1677 static const char *record_iconv_return(ZOOM_record rec, int *len,
1678                                        const char *buf, int sz,
1679                                        const char *record_charset)
1680 {
1681     char to[40];
1682     char from[40];
1683     yaz_iconv_t cd = 0;
1684
1685     *from = '\0';
1686     strcpy(to, "UTF-8");
1687     if (record_charset && *record_charset)
1688     {
1689         /* Use "from,to" or just "from" */
1690         const char *cp = strchr(record_charset, ',');
1691         int clen = strlen(record_charset);
1692         if (cp && cp[1])
1693         {
1694             strncpy( to, cp+1, sizeof(to)-1);
1695             to[sizeof(to)-1] = '\0';
1696             clen = cp - record_charset;
1697         }
1698         if (clen > sizeof(from)-1)
1699             clen = sizeof(from)-1;
1700
1701         if (clen)
1702             strncpy(from, record_charset, clen);
1703         from[clen] = '\0';
1704     }
1705
1706     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1707     {
1708         char outbuf[12];
1709         size_t inbytesleft = sz;
1710         const char *inp = buf;
1711
1712         if (!rec->wrbuf_iconv)
1713             rec->wrbuf_iconv = wrbuf_alloc();
1714
1715         wrbuf_rewind(rec->wrbuf_iconv);
1716
1717         while (inbytesleft)
1718         {
1719             size_t outbytesleft = sizeof(outbuf);
1720             char *outp = outbuf;
1721             size_t r = yaz_iconv (cd, (char**) &inp,
1722                                   &inbytesleft,
1723                                   &outp, &outbytesleft);
1724             if (r == (size_t) (-1))
1725             {
1726                 int e = yaz_iconv_error(cd);
1727                 if (e != YAZ_ICONV_E2BIG)
1728                     break;
1729             }
1730             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1731         }
1732         wrbuf_puts(rec->wrbuf_iconv, "");
1733         buf = wrbuf_buf(rec->wrbuf_iconv);
1734         sz = wrbuf_len(rec->wrbuf_iconv);
1735         yaz_iconv_close(cd);
1736     }
1737     if (len)
1738         *len = sz;
1739     return buf;
1740 }
1741
1742 ZOOM_API(const char *)
1743 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1744 {
1745     char type[40];
1746     char charset[40];
1747     char xpath[512];
1748     const char *cp;
1749     int i;
1750     Z_NamePlusRecord *npr;
1751
1752     if (len)
1753         *len = 0; /* default return */
1754
1755     if (!rec)
1756         return 0;
1757     npr = rec->npr;
1758     if (!npr)
1759         return 0;
1760
1761     cp = type_spec;
1762     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1763     {
1764         if (cp[i] == ';' || cp[i] == ' ')
1765             break;
1766         type[i] = cp[i];
1767     }
1768     type[i] = '\0';
1769     charset[0] = '\0';
1770     while (type_spec[i] == ';')
1771     {
1772         i++;
1773         while (type_spec[i] == ' ')
1774             i++;
1775         if (!strncmp(type_spec+i, "charset=", 8))
1776         {
1777             int j = 0;
1778             i = i + 8; /* skip charset= */
1779             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1780             {
1781                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1782                     break;
1783                 charset[j] = cp[i];
1784             }
1785             charset[j] = '\0';
1786         }
1787         else if (!strncmp(type_spec+i, "xpath=", 6))
1788         {
1789             int j = 0;
1790             i = i + 6;
1791             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1792                 xpath[j] = cp[i];
1793             xpath[j] = '\0';
1794         }
1795         while (type_spec[i] == ' ')
1796             i++;
1797     }
1798     if (!strcmp (type, "database"))
1799     {
1800         if (len)
1801             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1802         return npr->databaseName;
1803     }
1804     else if (!strcmp (type, "syntax"))
1805     {
1806         const char *desc = 0;
1807         if (npr->which == Z_NamePlusRecord_databaseRecord)
1808         {
1809             Z_External *r = (Z_External *) npr->u.databaseRecord;
1810             oident *ent = oid_getentbyoid(r->direct_reference);
1811             if (ent)
1812                 desc = ent->desc;
1813         }
1814         if (!desc)
1815             desc = "none";
1816         if (len)
1817             *len = strlen(desc);
1818         return desc;
1819     }
1820     if (npr->which != Z_NamePlusRecord_databaseRecord)
1821         return 0;
1822
1823     /* from now on - we have a database record .. */
1824     if (!strcmp (type, "render"))
1825     {
1826         Z_External *r = (Z_External *) npr->u.databaseRecord;
1827         oident *ent = oid_getentbyoid(r->direct_reference);
1828
1829         /* render bibliographic record .. */
1830         if (r->which == Z_External_OPAC)
1831         {
1832             r = r->u.opac->bibliographicRecord;
1833             if (!r)
1834                 return 0;
1835             ent = oid_getentbyoid(r->direct_reference);
1836         }
1837         if (r->which == Z_External_sutrs)
1838             return record_iconv_return(rec, len,
1839                                        (char*) r->u.sutrs->buf,
1840                                        r->u.sutrs->len,
1841                                        charset);
1842         else if (r->which == Z_External_octet)
1843         {
1844             const char *ret_buf;
1845             switch (ent->value)
1846             {
1847             case VAL_SOIF:
1848             case VAL_HTML:
1849             case VAL_SUTRS:
1850                 break;
1851             case VAL_TEXT_XML:
1852             case VAL_APPLICATION_XML:
1853                 break;
1854             default:
1855                 ret_buf = marc_iconv_return(
1856                     rec, YAZ_MARC_LINE, len,
1857                     (const char *) r->u.octet_aligned->buf,
1858                     r->u.octet_aligned->len,
1859                     charset);
1860                 if (ret_buf)
1861                     return ret_buf;
1862             }
1863             return record_iconv_return(rec, len,
1864                                        (const char *) r->u.octet_aligned->buf,
1865                                        r->u.octet_aligned->len,
1866                                        charset);
1867         }
1868         else if (r->which == Z_External_grs1)
1869         {
1870             if (!rec->wrbuf_marc)
1871                 rec->wrbuf_marc = wrbuf_alloc();
1872             wrbuf_rewind (rec->wrbuf_marc);
1873             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1874             return record_iconv_return(rec, len,
1875                                        wrbuf_buf(rec->wrbuf_marc),
1876                                        wrbuf_len(rec->wrbuf_marc),
1877                                        charset);
1878         }
1879         return 0;
1880     }
1881     else if (!strcmp (type, "xml"))
1882     {
1883         Z_External *r = (Z_External *) npr->u.databaseRecord;
1884         oident *ent = oid_getentbyoid(r->direct_reference);
1885
1886         /* render bibliographic record .. */
1887         if (r->which == Z_External_OPAC)
1888         {
1889             r = r->u.opac->bibliographicRecord;
1890             if (!r)
1891                 return 0;
1892             ent = oid_getentbyoid(r->direct_reference);
1893         }
1894
1895         if (r->which == Z_External_sutrs)
1896             return record_iconv_return(rec, len,
1897                                        (const char *) r->u.sutrs->buf,
1898                                        r->u.sutrs->len,
1899                                        charset);
1900         else if (r->which == Z_External_octet)
1901         {
1902             const char *ret_buf;
1903             int marc_decode_type = YAZ_MARC_MARCXML;
1904
1905             switch (ent->value)
1906             {
1907             case VAL_SOIF:
1908             case VAL_HTML:
1909             case VAL_SUTRS:
1910                 break;
1911             case VAL_TEXT_XML:
1912             case VAL_APPLICATION_XML:
1913                 break;
1914             default:
1915                 ret_buf = marc_iconv_return(
1916                     rec, marc_decode_type, len,
1917                     (const char *) r->u.octet_aligned->buf,
1918                     r->u.octet_aligned->len,
1919                     charset);
1920                 if (ret_buf)
1921                     return ret_buf;
1922             }
1923             return record_iconv_return(rec, len,
1924                                        (const char *) r->u.octet_aligned->buf,
1925                                        r->u.octet_aligned->len,
1926                                        charset);
1927         }
1928         else if (r->which == Z_External_grs1)
1929         {
1930             if (len) *len = 5;
1931             return "GRS-1";
1932         }
1933         return 0;
1934     }
1935     else if (!strcmp (type, "raw"))
1936     {
1937         Z_External *r = (Z_External *) npr->u.databaseRecord;
1938
1939         if (r->which == Z_External_sutrs)
1940         {
1941             if (len) *len = r->u.sutrs->len;
1942             return (const char *) r->u.sutrs->buf;
1943         }
1944         else if (r->which == Z_External_octet)
1945         {
1946             if (len) *len = r->u.octet_aligned->len;
1947             return (const char *) r->u.octet_aligned->buf;
1948         }
1949         else /* grs-1, explain, OPAC, ... */
1950         {
1951             if (len) *len = -1;
1952             return (const char *) npr->u.databaseRecord;
1953         }
1954         return 0;
1955     }
1956     else if (!strcmp (type, "ext"))
1957     {
1958         if (len) *len = -1;
1959         return (const char *) npr->u.databaseRecord;
1960     }
1961     else if (!strcmp (type, "opac"))
1962
1963     {
1964         Z_External *r = (Z_External *) npr->u.databaseRecord;
1965         if (r->which == Z_External_OPAC)
1966         {
1967             if (!rec->wrbuf_opac)
1968                 rec->wrbuf_opac = wrbuf_alloc();
1969             wrbuf_rewind (rec->wrbuf_opac);
1970             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1971             return record_iconv_return(rec, len,
1972                                        wrbuf_buf(rec->wrbuf_opac),
1973                                        wrbuf_len(rec->wrbuf_opac),
1974                                        charset);
1975         }
1976     }
1977     return 0;
1978 }
1979
1980 static int strcmp_null(const char *v1, const char *v2)
1981 {
1982     if (!v1 && !v2)
1983         return 0;
1984     if (!v1 || !v2)
1985         return -1;
1986     return strcmp(v1, v2);
1987 }
1988
1989 static size_t record_hash(int pos)
1990 {
1991     if (pos < 0)
1992         pos = 0;
1993     return pos % RECORD_HASH_SIZE;
1994 }
1995
1996 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1997                               int pos)
1998 {
1999     ZOOM_record_cache rc;
2000     const char *elementSetName =
2001         ZOOM_resultset_option_get (r, "elementSetName");
2002     const char *syntax =
2003         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2004
2005     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2006     ZOOM_connection_put_event(r->connection, event);
2007
2008     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2009     {
2010         if (pos == rc->pos)
2011         {
2012             if (strcmp_null(r->schema, rc->schema))
2013                 continue;
2014             if (strcmp_null(elementSetName,rc->elementSetName))
2015                 continue;
2016             if (strcmp_null(syntax, rc->syntax))
2017                 continue;
2018             /* not destroying rc->npr (it's handled by nmem )*/
2019             rc->rec.npr = npr;
2020             /* keeping wrbuf_marc too */
2021             return;
2022         }
2023     }
2024     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
2025     rc->rec.npr = npr;
2026     rc->rec.odr = 0;
2027     rc->rec.wrbuf_marc = 0;
2028     rc->rec.wrbuf_iconv = 0;
2029     rc->rec.wrbuf_opac = 0;
2030     if (elementSetName)
2031         rc->elementSetName = odr_strdup (r->odr, elementSetName);
2032     else
2033         rc->elementSetName = 0;
2034
2035     if (syntax)
2036         rc->syntax = odr_strdup (r->odr, syntax);
2037     else
2038         rc->syntax = 0;
2039
2040     if (r->schema)
2041         rc->schema = odr_strdup (r->odr, r->schema);
2042     else
2043         rc->schema = 0;
2044
2045     rc->pos = pos;
2046     rc->next = r->record_hash[record_hash(pos)];
2047     r->record_hash[record_hash(pos)] = rc;
2048 }
2049
2050 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
2051 {
2052     ZOOM_record_cache rc;
2053     const char *elementSetName =
2054         ZOOM_resultset_option_get (r, "elementSetName");
2055     const char *syntax =
2056         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2057
2058     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2059     {
2060         if (pos == rc->pos)
2061         {
2062             if (strcmp_null(r->schema, rc->schema))
2063                 continue;
2064             if (strcmp_null(elementSetName,rc->elementSetName))
2065                 continue;
2066             if (strcmp_null(syntax, rc->syntax))
2067                 continue;
2068             return &rc->rec;
2069         }
2070     }
2071     return 0;
2072 }
2073
2074 static void handle_records (ZOOM_connection c, Z_Records *sr,
2075                             int present_phase)
2076 {
2077     ZOOM_resultset resultset;
2078
2079     if (!c->tasks)
2080         return ;
2081     switch (c->tasks->which)
2082     {
2083     case ZOOM_TASK_SEARCH:
2084         resultset = c->tasks->u.search.resultset;
2085         break;
2086     case ZOOM_TASK_RETRIEVE:
2087         resultset = c->tasks->u.retrieve.resultset;
2088         break;
2089     default:
2090         return;
2091     }
2092     if (sr && sr->which == Z_Records_NSD)
2093         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2094     else if (sr && sr->which == Z_Records_multipleNSD)
2095     {
2096         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2097             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2098         else
2099             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2100     }
2101     else
2102     {
2103         if (resultset->count + resultset->start > resultset->size)
2104             resultset->count = resultset->size - resultset->start;
2105         if (resultset->count < 0)
2106             resultset->count = 0;
2107         if (sr && sr->which == Z_Records_DBOSD)
2108         {
2109             int i;
2110             NMEM nmem = odr_extract_mem (c->odr_in);
2111             Z_NamePlusRecordList *p =
2112                 sr->u.databaseOrSurDiagnostics;
2113             for (i = 0; i<p->num_records; i++)
2114             {
2115                 record_cache_add (resultset, p->records[i],
2116                                   i+ resultset->start);
2117             }
2118             /* transfer our response to search_nmem .. we need it later */
2119             nmem_transfer (resultset->odr->mem, nmem);
2120             nmem_destroy (nmem);
2121             if (present_phase && p->num_records == 0)
2122             {
2123                 /* present response and we didn't get any records! */
2124                 Z_NamePlusRecord *myrec =
2125                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2126                 record_cache_add(resultset, myrec, resultset->start);
2127             }
2128         }
2129         else if (present_phase)
2130         {
2131             /* present response and we didn't get any records! */
2132             Z_NamePlusRecord *myrec =
2133                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2134             record_cache_add(resultset, myrec, resultset->start);
2135         }
2136     }
2137 }
2138
2139 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2140 {
2141     handle_records (c, pr->records, 1);
2142 }
2143
2144 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2145                                        Z_Term *term)
2146 {
2147     switch (term->which)
2148     {
2149     case Z_Term_general:
2150         ZOOM_options_setl(opt, name,
2151                           (const char *)(term->u.general->buf),
2152                           term->u.general->len);
2153         break;
2154     case Z_Term_characterString:
2155         ZOOM_options_set(opt, name, term->u.characterString);
2156         break;
2157     case Z_Term_numeric:
2158         ZOOM_options_set_int(opt, name, *term->u.numeric);
2159         break;
2160     }
2161 }
2162
2163 static void handle_queryExpression(ZOOM_options opt, const char *name,
2164                                    Z_QueryExpression *exp)
2165 {
2166     char opt_name[80];
2167
2168     switch (exp->which)
2169     {
2170     case Z_QueryExpression_term:
2171         if (exp->u.term && exp->u.term->queryTerm)
2172         {
2173             sprintf(opt_name, "%s.term", name);
2174             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2175         }
2176         break;
2177     case Z_QueryExpression_query:
2178         break;
2179     }
2180 }
2181
2182 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2183                                 Z_OtherInformation *o)
2184 {
2185     int i;
2186     for (i = 0; o && i < o->num_elements; i++)
2187     {
2188         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2189         {
2190             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2191
2192             if (ext->which == Z_External_searchResult1)
2193             {
2194                 int j;
2195                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2196
2197                 if (sr->num)
2198                     ZOOM_options_set_int(
2199                         resultset->options, "searchresult.size", sr->num);
2200
2201                 for (j = 0; j < sr->num; j++)
2202                 {
2203                     Z_SearchInfoReport_s *ent =
2204                         ext->u.searchResult1->elements[j];
2205                     char pref[80];
2206
2207                     sprintf(pref, "searchresult.%d", j);
2208
2209                     if (ent->subqueryId)
2210                     {
2211                         char opt_name[80];
2212                         sprintf(opt_name, "%s.id", pref);
2213                         ZOOM_options_set(resultset->options, opt_name,
2214                                          ent->subqueryId);
2215                     }
2216                     if (ent->subqueryExpression)
2217                     {
2218                         char opt_name[80];
2219                         sprintf(opt_name, "%s.subquery", pref);
2220                         handle_queryExpression(resultset->options, opt_name,
2221                                                ent->subqueryExpression);
2222                     }
2223                     if (ent->subqueryInterpretation)
2224                     {
2225                         char opt_name[80];
2226                         sprintf(opt_name, "%s.interpretation", pref);
2227                         handle_queryExpression(resultset->options, opt_name,
2228                                                ent->subqueryInterpretation);
2229                     }
2230                     if (ent->subqueryRecommendation)
2231                     {
2232                         char opt_name[80];
2233                         sprintf(opt_name, "%s.recommendation", pref);
2234                         handle_queryExpression(resultset->options, opt_name,
2235                                                ent->subqueryRecommendation);
2236                     }
2237                     if (ent->subqueryCount)
2238                     {
2239                         char opt_name[80];
2240                         sprintf(opt_name, "%s.count", pref);
2241                         ZOOM_options_set_int(resultset->options, opt_name,
2242                                              *ent->subqueryCount);
2243                     }
2244                 }
2245             }
2246         }
2247     }
2248 }
2249
2250 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2251 {
2252     ZOOM_resultset resultset;
2253     ZOOM_Event event;
2254
2255     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2256         return ;
2257
2258     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2259     ZOOM_connection_put_event(c, event);
2260
2261     resultset = c->tasks->u.search.resultset;
2262
2263     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2264
2265     resultset->size = *sr->resultCount;
2266     handle_records (c, sr->records, 0);
2267 }
2268
2269 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2270 {
2271     if (res->diagnostics && res->num_diagnostics > 0)
2272         response_diag (c, res->diagnostics[0]);
2273 }
2274
2275 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2276 {
2277     NMEM nmem = odr_extract_mem (c->odr_in);
2278     ZOOM_scanset scan;
2279
2280     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2281         return 0;
2282     scan = c->tasks->u.scan.scan;
2283
2284     if (res->entries && res->entries->nonsurrogateDiagnostics)
2285         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2286     scan->scan_response = res;
2287     nmem_transfer (scan->odr->mem, nmem);
2288     if (res->stepSize)
2289         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2290     if (res->positionOfTerm)
2291         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2292     if (res->scanStatus)
2293         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2294     if (res->numberOfEntriesReturned)
2295         ZOOM_options_set_int (scan->options, "number",
2296                               *res->numberOfEntriesReturned);
2297     nmem_destroy (nmem);
2298     return 1;
2299 }
2300
2301 static zoom_ret send_sort (ZOOM_connection c,
2302                            ZOOM_resultset resultset)
2303 {
2304     if (c->error)
2305         resultset->r_sort_spec = 0;
2306     if (resultset->r_sort_spec)
2307     {
2308         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2309         Z_SortRequest *req = apdu->u.sortRequest;
2310
2311         req->num_inputResultSetNames = 1;
2312         req->inputResultSetNames = (Z_InternationalString **)
2313             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2314         req->inputResultSetNames[0] =
2315             odr_strdup (c->odr_out, resultset->setname);
2316         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2317         req->sortSequence = resultset->r_sort_spec;
2318         resultset->r_sort_spec = 0;
2319         return send_APDU (c, apdu);
2320     }
2321     return zoom_complete;
2322 }
2323
2324 static zoom_ret send_present(ZOOM_connection c)
2325 {
2326     Z_APDU *apdu = 0;
2327     Z_PresentRequest *req = 0;
2328     int i = 0;
2329     const char *syntax = 0;
2330     const char *elementSetName = 0;
2331     ZOOM_resultset  resultset;
2332
2333     if (!c->tasks)
2334     {
2335         yaz_log(log_details, "%p send_present no tasks", c);
2336         return zoom_complete;
2337     }
2338     switch (c->tasks->which)
2339     {
2340     case ZOOM_TASK_SEARCH:
2341         resultset = c->tasks->u.search.resultset;
2342         break;
2343     case ZOOM_TASK_RETRIEVE:
2344         resultset = c->tasks->u.retrieve.resultset;
2345         resultset->start = c->tasks->u.retrieve.start;
2346         resultset->count = c->tasks->u.retrieve.count;
2347
2348         if (resultset->start >= resultset->size)
2349         {
2350             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2351                     c, resultset->start, resultset->size);
2352             return zoom_complete;
2353         }
2354         if (resultset->start + resultset->count > resultset->size)
2355             resultset->count = resultset->size - resultset->start;
2356         break;
2357     default:
2358         return zoom_complete;
2359     }
2360     yaz_log(log_details, "%p send_present start=%d count=%d",
2361             c, resultset->start, resultset->count);
2362
2363     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2364     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2365
2366     if (c->error)                  /* don't continue on error */
2367         return zoom_complete;
2368     if (resultset->start < 0)
2369         return zoom_complete;
2370     for (i = 0; i<resultset->count; i++)
2371     {
2372         ZOOM_record rec =
2373             record_cache_lookup (resultset, i + resultset->start);
2374         if (!rec)
2375             break;
2376     }
2377     if (i == resultset->count)
2378     {
2379         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2380         return zoom_complete;
2381     }
2382
2383     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2384     req = apdu->u.presentRequest;
2385
2386     resultset->start += i;
2387     resultset->count -= i;
2388
2389     if (i)
2390         yaz_log(log_details, "%p send_present skip=%d", c, i);
2391
2392     *req->resultSetStartPoint = resultset->start + 1;
2393     *req->numberOfRecordsRequested = resultset->step>0 ?
2394         resultset->step : resultset->count;
2395     if (*req->numberOfRecordsRequested + resultset->start > resultset->size)
2396         *req->numberOfRecordsRequested = resultset->size -  resultset->start;
2397     assert (*req->numberOfRecordsRequested > 0);
2398
2399     if (syntax && *syntax)
2400         req->preferredRecordSyntax =
2401             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2402
2403     if (resultset->schema && *resultset->schema)
2404     {
2405         Z_RecordComposition *compo = (Z_RecordComposition *)
2406             odr_malloc (c->odr_out, sizeof(*compo));
2407
2408         req->recordComposition = compo;
2409         compo->which = Z_RecordComp_complex;
2410         compo->u.complex = (Z_CompSpec *)
2411             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2412         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2413             odr_malloc(c->odr_out, sizeof(bool_t));
2414         *compo->u.complex->selectAlternativeSyntax = 0;
2415
2416         compo->u.complex->generic = (Z_Specification *)
2417             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2418
2419         compo->u.complex->generic->which = Z_Schema_oid;
2420         compo->u.complex->generic->schema.oid = (Odr_oid *)
2421             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2422
2423         if (!compo->u.complex->generic->schema.oid)
2424         {
2425             /* OID wasn't a schema! Try record syntax instead. */
2426
2427             compo->u.complex->generic->schema.oid = (Odr_oid *)
2428                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2429         }
2430         if (elementSetName && *elementSetName)
2431         {
2432             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2433                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2434             compo->u.complex->generic->elementSpec->which =
2435                 Z_ElementSpec_elementSetName;
2436             compo->u.complex->generic->elementSpec->u.elementSetName =
2437                 odr_strdup (c->odr_out, elementSetName);
2438         }
2439         else
2440             compo->u.complex->generic->elementSpec = 0;
2441         compo->u.complex->num_dbSpecific = 0;
2442         compo->u.complex->dbSpecific = 0;
2443         compo->u.complex->num_recordSyntax = 0;
2444         compo->u.complex->recordSyntax = 0;
2445     }
2446     else if (elementSetName && *elementSetName)
2447     {
2448         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2449             odr_malloc (c->odr_out, sizeof(*esn));
2450         Z_RecordComposition *compo = (Z_RecordComposition *)
2451             odr_malloc (c->odr_out, sizeof(*compo));
2452
2453         esn->which = Z_ElementSetNames_generic;
2454         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2455         compo->which = Z_RecordComp_simple;
2456         compo->u.simple = esn;
2457         req->recordComposition = compo;
2458     }
2459     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2460     return send_APDU (c, apdu);
2461 }
2462
2463 ZOOM_API(ZOOM_scanset)
2464 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2465 {
2466     ZOOM_scanset s;
2467     ZOOM_query q = ZOOM_query_create();
2468
2469     ZOOM_query_prefix (q, start);
2470
2471     s = ZOOM_connection_scan1(c, q);
2472     ZOOM_query_destroy (q);
2473     return s;
2474
2475 }
2476
2477 ZOOM_API(ZOOM_scanset)
2478 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query q)
2479 {
2480     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2481     char *start;
2482     char *freeme = 0;
2483
2484     scan->connection = c;
2485     scan->odr = odr_createmem (ODR_DECODE);
2486     scan->options = ZOOM_options_create_with_parent (c->options);
2487     scan->refcount = 1;
2488     scan->scan_response = 0;
2489
2490     /*
2491      * We need to check the query-type, so we can recognise CQL and
2492      * compile it into a form that we can use here.  The ZOOM_query
2493      * structure has no explicit `type' member, but inspection of the
2494      * ZOOM_query_prefix() and ZOOM_query_cql() functions shows how
2495      * the structure is set up in each case.
2496      */
2497
2498     if (q->z_query->which == Z_Query_type_1) {
2499         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2500                 c, q, q->query_string);
2501         start = q->query_string;
2502     } else if (q->z_query->which == Z_Query_type_104) {
2503         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2504                 c, q, q->query_string);
2505         start = freeme = cql2pqf(c, q->query_string);
2506         if (start == 0)
2507             return 0;
2508     } else {
2509         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2510                 c, q, q->query_string);
2511         abort();
2512     }
2513
2514     scan->termListAndStartPoint =
2515         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2516     xfree (freeme);
2517     if (scan->termListAndStartPoint != 0)
2518     {
2519         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2520         task->u.scan.scan = scan;
2521
2522         (scan->refcount)++;
2523         if (!c->async)
2524         {
2525             while (ZOOM_event (1, &c))
2526                 ;
2527         }
2528     }
2529     return scan;
2530 }
2531
2532 ZOOM_API(void)
2533 ZOOM_scanset_destroy (ZOOM_scanset scan)
2534 {
2535     if (!scan)
2536         return;
2537     (scan->refcount)--;
2538     if (scan->refcount == 0)
2539     {
2540         odr_destroy (scan->odr);
2541
2542         ZOOM_options_destroy (scan->options);
2543         xfree (scan);
2544     }
2545 }
2546
2547 static zoom_ret send_package (ZOOM_connection c)
2548 {
2549     ZOOM_Event event;
2550
2551     yaz_log(log_details, "%p send_package", c);
2552     if (!c->tasks)
2553         return zoom_complete;
2554     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2555
2556     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2557     ZOOM_connection_put_event (c, event);
2558
2559     return do_write_ex (c, c->tasks->u.package->buf_out,
2560                         c->tasks->u.package->len_out);
2561 }
2562
2563 static zoom_ret send_scan (ZOOM_connection c)
2564 {
2565     ZOOM_scanset scan;
2566     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2567     Z_ScanRequest *req = apdu->u.scanRequest;
2568
2569     yaz_log(log_details, "%p send_scan", c);
2570     if (!c->tasks)
2571         return zoom_complete;
2572     assert (c->tasks->which == ZOOM_TASK_SCAN);
2573     scan = c->tasks->u.scan.scan;
2574
2575     req->termListAndStartPoint = scan->termListAndStartPoint;
2576     req->attributeSet = scan->attributeSet;
2577
2578     *req->numberOfTermsRequested =
2579         ZOOM_options_get_int(scan->options, "number", 10);
2580
2581     req->preferredPositionInResponse =
2582         odr_intdup (c->odr_out,
2583                     ZOOM_options_get_int(scan->options, "position", 1));
2584
2585     req->stepSize =
2586         odr_intdup (c->odr_out,
2587                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2588
2589     req->databaseNames = set_DatabaseNames (c, scan->options,
2590                                             &req->num_databaseNames);
2591
2592     return send_APDU (c, apdu);
2593 }
2594
2595 ZOOM_API(size_t)
2596 ZOOM_scanset_size (ZOOM_scanset scan)
2597 {
2598     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2599         return 0;
2600     return scan->scan_response->entries->num_entries;
2601 }
2602
2603 ZOOM_API(const char *)
2604 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2605                    int *occ, int *len)
2606 {
2607     const char *term = 0;
2608     size_t noent = ZOOM_scanset_size (scan);
2609     Z_ScanResponse *res = scan->scan_response;
2610
2611     *len = 0;
2612     *occ = 0;
2613     if (pos >= noent)
2614         return 0;
2615     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2616     {
2617         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2618
2619         if (t->term->which == Z_Term_general)
2620         {
2621             term = (const char *) t->term->u.general->buf;
2622             *len = t->term->u.general->len;
2623         }
2624         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2625     }
2626     return term;
2627 }
2628
2629 ZOOM_API(const char *)
2630 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2631                            int *occ, int *len)
2632 {
2633     const char *term = 0;
2634     size_t noent = ZOOM_scanset_size (scan);
2635     Z_ScanResponse *res = scan->scan_response;
2636
2637     *len = 0;
2638     *occ = 0;
2639     if (pos >= noent)
2640         return 0;
2641     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2642     {
2643         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2644
2645         if (t->displayTerm)
2646         {
2647             term = t->displayTerm;
2648             *len = strlen(term);
2649         }
2650         else if (t->term->which == Z_Term_general)
2651         {
2652             term = (const char *) t->term->u.general->buf;
2653             *len = t->term->u.general->len;
2654         }
2655         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2656     }
2657     return term;
2658 }
2659
2660 ZOOM_API(const char *)
2661 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2662 {
2663     return ZOOM_options_get (scan->options, key);
2664 }
2665
2666 ZOOM_API(void)
2667 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2668                               const char *val)
2669 {
2670     ZOOM_options_set (scan->options, key, val);
2671 }
2672
2673 static Z_APDU *create_es_package (ZOOM_package p, int type)
2674 {
2675     const char *str;
2676     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2677     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2678
2679     *req->function = Z_ExtendedServicesRequest_create;
2680
2681     str = ZOOM_options_get(p->options, "package-name");
2682     if (str && *str)
2683         req->packageName = nmem_strdup (p->odr_out->mem, str);
2684
2685     str = ZOOM_options_get(p->options, "user-id");
2686     if (str)
2687         req->userId = nmem_strdup (p->odr_out->mem, str);
2688
2689     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2690                                               type);
2691
2692     str = ZOOM_options_get(p->options, "function");
2693     if (str)
2694     {
2695         if (!strcmp (str, "create"))
2696             *req->function = 1;
2697         if (!strcmp (str, "delete"))
2698             *req->function = 2;
2699         if (!strcmp (str, "modify"))
2700             *req->function = 3;
2701     }
2702     return apdu;
2703 }
2704
2705 static const char *ill_array_lookup (void *clientData, const char *idx)
2706 {
2707     ZOOM_package p = (ZOOM_package) clientData;
2708     return ZOOM_options_get (p->options, idx+4);
2709 }
2710
2711 static Z_External *encode_ill_request (ZOOM_package p)
2712 {
2713     ODR out = p->odr_out;
2714     ILL_Request *req;
2715     Z_External *r = 0;
2716     struct ill_get_ctl ctl;
2717
2718     ctl.odr = p->odr_out;
2719     ctl.clientData = p;
2720     ctl.f = ill_array_lookup;
2721
2722     req = ill_get_ILLRequest(&ctl, "ill", 0);
2723
2724     if (!ill_Request (out, &req, 0, 0))
2725     {
2726         int ill_request_size;
2727         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2728         if (ill_request_buf)
2729             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2730         return 0;
2731     }
2732     else
2733     {
2734         oident oid;
2735         int illRequest_size = 0;
2736         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2737
2738         oid.proto = PROTO_GENERAL;
2739         oid.oclass = CLASS_GENERAL;
2740         oid.value = VAL_ISO_ILL_1;
2741
2742         r = (Z_External *) odr_malloc (out, sizeof(*r));
2743         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2744         r->indirect_reference = 0;
2745         r->descriptor = 0;
2746         r->which = Z_External_single;
2747
2748         r->u.single_ASN1_type =
2749             odr_create_Odr_oct(out,
2750                                (unsigned char *)illRequest_buf,
2751                                illRequest_size);
2752     }
2753     return r;
2754 }
2755
2756 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2757 {
2758     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2759     const char *str;
2760
2761     req->which = Z_IOItemOrder_esRequest;
2762     req->u.esRequest = (Z_IORequest *)
2763         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2764
2765     /* to keep part ... */
2766     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2767         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2768     req->u.esRequest->toKeep->supplDescription = 0;
2769     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2770         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2771
2772     str = ZOOM_options_get(p->options, "contact-name");
2773     req->u.esRequest->toKeep->contact->name = str ?
2774         nmem_strdup (p->odr_out->mem, str) : 0;
2775
2776     str = ZOOM_options_get(p->options, "contact-phone");
2777     req->u.esRequest->toKeep->contact->phone = str ?
2778         nmem_strdup (p->odr_out->mem, str) : 0;
2779
2780     str = ZOOM_options_get(p->options, "contact-email");
2781     req->u.esRequest->toKeep->contact->email = str ?
2782         nmem_strdup (p->odr_out->mem, str) : 0;
2783
2784     req->u.esRequest->toKeep->addlBilling = 0;
2785
2786     /* not to keep part ... */
2787     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2788         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2789
2790     str = ZOOM_options_get(p->options, "itemorder-setname");
2791     if (!str)
2792         str = "default";
2793
2794     if (!*str)
2795         req->u.esRequest->notToKeep->resultSetItem = 0;
2796     else
2797     {
2798         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2799            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2800
2801         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2802            nmem_strdup (p->odr_out->mem, str);
2803         req->u.esRequest->notToKeep->resultSetItem->item =
2804             (int *) odr_malloc(p->odr_out, sizeof(int));
2805
2806         str = ZOOM_options_get(p->options, "itemorder-item");
2807         *req->u.esRequest->notToKeep->resultSetItem->item =
2808             (str ? atoi(str) : 1);
2809     }
2810     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2811
2812     return req;
2813 }
2814
2815 Z_APDU *create_admin_package(ZOOM_package p, int type,
2816                              Z_ESAdminOriginPartToKeep **toKeepP,
2817                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2818 {
2819     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2820     if (apdu)
2821     {
2822         Z_ESAdminOriginPartToKeep  *toKeep;
2823         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2824         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2825         const char *first_db = "Default";
2826         int num_db;
2827         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2828         if (num_db > 0)
2829             first_db = db[0];
2830
2831         r->direct_reference =
2832             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2833                                    VAL_ADMINSERVICE);
2834         r->descriptor = 0;
2835         r->indirect_reference = 0;
2836         r->which = Z_External_ESAdmin;
2837
2838         r->u.adminService = (Z_Admin *)
2839             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2840         r->u.adminService->which = Z_Admin_esRequest;
2841         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2842             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2843
2844         toKeep = r->u.adminService->u.esRequest->toKeep =
2845             (Z_ESAdminOriginPartToKeep *)
2846             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2847         toKeep->which = type;
2848         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2849         toKeep->u.create = odr_nullval();
2850         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2851
2852         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2853             (Z_ESAdminOriginPartNotToKeep *)
2854             odr_malloc(p->odr_out,
2855                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2856         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2857         notToKeep->u.recordsWillFollow = odr_nullval();
2858         if (toKeepP)
2859             *toKeepP = toKeep;
2860         if (notToKeepP)
2861             *notToKeepP = notToKeep;
2862     }
2863     return apdu;
2864 }
2865
2866 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2867 {
2868     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2869     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2870     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2871     const char *doc = ZOOM_options_get(p->options, "doc");
2872
2873     if (!doc)
2874         doc = "";
2875
2876     req->taskSpecificParameters = ext;
2877     ext->direct_reference = req->packageType;
2878     ext->descriptor = 0;
2879     ext->indirect_reference = 0;
2880
2881     ext->which = Z_External_octet;
2882     ext->u.single_ASN1_type =
2883         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
2884                            strlen(doc));
2885     return apdu;
2886 }
2887
2888 static Z_APDU *create_update_package(ZOOM_package p)
2889 {
2890     Z_APDU *apdu = 0;
2891     const char *first_db = "Default";
2892     int num_db;
2893     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2894     const char *action = ZOOM_options_get(p->options, "action");
2895     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2896     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2897     const char *record_buf = ZOOM_options_get(p->options, "record");
2898     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2899     int syntax_oid = VAL_NONE;
2900     int action_no = -1;
2901
2902     if (syntax_str)
2903         syntax_oid = oid_getvalbyname(syntax_str);
2904     if (!record_buf)
2905     {
2906         record_buf = "void";
2907         syntax_oid = VAL_SUTRS;
2908     }
2909     if (syntax_oid == VAL_NONE)
2910         syntax_oid = VAL_TEXT_XML;
2911
2912     if (num_db > 0)
2913         first_db = db[0];
2914
2915     if (!action)
2916         action = "specialUpdate";
2917
2918     if (!strcmp(action, "recordInsert"))
2919         action_no = Z_IUOriginPartToKeep_recordInsert;
2920     else if (!strcmp(action, "recordReplace"))
2921         action_no = Z_IUOriginPartToKeep_recordReplace;
2922     else if (!strcmp(action, "recordDelete"))
2923         action_no = Z_IUOriginPartToKeep_recordDelete;
2924     else if (!strcmp(action, "elementUpdate"))
2925         action_no = Z_IUOriginPartToKeep_elementUpdate;
2926     else if (!strcmp(action, "specialUpdate"))
2927         action_no = Z_IUOriginPartToKeep_specialUpdate;
2928     else
2929         return 0;
2930
2931     apdu = create_es_package (p, VAL_DBUPDATE);
2932     if (apdu)
2933     {
2934         Z_IUOriginPartToKeep *toKeep;
2935         Z_IUSuppliedRecords *notToKeep;
2936         Z_External *r = (Z_External *)
2937             odr_malloc (p->odr_out, sizeof(*r));
2938
2939         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2940
2941         r->direct_reference =
2942             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2943                                    VAL_DBUPDATE);
2944         r->descriptor = 0;
2945         r->which = Z_External_update;
2946         r->indirect_reference = 0;
2947         r->u.update = (Z_IUUpdate *)
2948             odr_malloc(p->odr_out, sizeof(*r->u.update));
2949
2950         r->u.update->which = Z_IUUpdate_esRequest;
2951         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2952             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2953         toKeep = r->u.update->u.esRequest->toKeep =
2954             (Z_IUOriginPartToKeep *)
2955             odr_malloc(p->odr_out, sizeof(*toKeep));
2956
2957         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2958         toKeep->schema = 0;
2959         toKeep->elementSetName = 0;
2960         toKeep->actionQualifier = 0;
2961         toKeep->action = odr_intdup(p->odr_out, action_no);
2962
2963         notToKeep = r->u.update->u.esRequest->notToKeep =
2964             (Z_IUSuppliedRecords *)
2965             odr_malloc(p->odr_out, sizeof(*notToKeep));
2966         notToKeep->num = 1;
2967         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2968             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2969         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2970             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2971         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2972         if (recordIdOpaque)
2973         {
2974             notToKeep->elements[0]->u.opaque =
2975                 odr_create_Odr_oct(p->odr_out,
2976                                    (const unsigned char *) recordIdOpaque,
2977                                    strlen(recordIdOpaque));
2978         }
2979         else if (recordIdNumber)
2980         {
2981             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2982
2983             notToKeep->elements[0]->u.number =
2984                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2985         }
2986         else
2987             notToKeep->elements[0]->u.opaque = 0;
2988         notToKeep->elements[0]->supplementalId = 0;
2989         notToKeep->elements[0]->correlationInfo = 0;
2990         notToKeep->elements[0]->record =
2991             z_ext_record(p->odr_out, syntax_oid,
2992                          record_buf, strlen(record_buf));
2993     }
2994     if (0 && apdu)
2995     {
2996        ODR print = odr_createmem(ODR_PRINT);
2997
2998        z_APDU(print, &apdu, 0, 0);
2999        odr_destroy(print);
3000     }
3001     return apdu;
3002 }
3003
3004 ZOOM_API(void)
3005     ZOOM_package_send (ZOOM_package p, const char *type)
3006 {
3007     Z_APDU *apdu = 0;
3008     ZOOM_connection c;
3009     if (!p)
3010         return;
3011     c = p->connection;
3012     odr_reset (p->odr_out);
3013     xfree (p->buf_out);
3014     p->buf_out = 0;
3015     if (!strcmp(type, "itemorder"))
3016     {
3017         apdu = create_es_package (p, VAL_ITEMORDER);
3018         if (apdu)
3019         {
3020             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
3021
3022             r->direct_reference =
3023                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3024                                        VAL_ITEMORDER);
3025             r->descriptor = 0;
3026             r->which = Z_External_itemOrder;
3027             r->indirect_reference = 0;
3028             r->u.itemOrder = encode_item_order (p);
3029
3030             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3031         }
3032     }
3033     else if (!strcmp(type, "create"))  /* create database */
3034     {
3035         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3036                                     0, 0);
3037     }
3038     else if (!strcmp(type, "drop"))  /* drop database */
3039     {
3040         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3041                                     0, 0);
3042     }
3043     else if (!strcmp(type, "commit"))  /* commit changes */
3044     {
3045         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3046                                     0, 0);
3047     }
3048     else if (!strcmp(type, "update")) /* update record(s) */
3049     {
3050         apdu = create_update_package(p);
3051     }
3052     else if (!strcmp(type, "xmlupdate"))
3053     {
3054         apdu = create_xmlupdate_package(p);
3055     }
3056     if (apdu)
3057     {
3058         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3059         {
3060             char *buf;
3061
3062             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
3063             task->u.package = p;
3064             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3065             p->buf_out = (char *) xmalloc (p->len_out);
3066             memcpy (p->buf_out, buf, p->len_out);
3067
3068             (p->refcount)++;
3069             if (!c->async)
3070             {
3071                 while (ZOOM_event (1, &c))
3072                     ;
3073             }
3074         }
3075     }
3076 }
3077
3078 ZOOM_API(ZOOM_package)
3079     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
3080 {
3081     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
3082
3083     p->connection = c;
3084     p->odr_out = odr_createmem (ODR_ENCODE);
3085     p->options = ZOOM_options_create_with_parent2 (options, c->options);
3086     p->refcount = 1;
3087     p->buf_out = 0;
3088     p->len_out = 0;
3089     return p;
3090 }
3091
3092 ZOOM_API(void)
3093     ZOOM_package_destroy(ZOOM_package p)
3094 {
3095     if (!p)
3096         return;
3097     (p->refcount)--;
3098     if (p->refcount == 0)
3099     {
3100         odr_destroy (p->odr_out);
3101         xfree (p->buf_out);
3102
3103         ZOOM_options_destroy (p->options);
3104         xfree (p);
3105     }
3106 }
3107
3108 ZOOM_API(const char *)
3109 ZOOM_package_option_get (ZOOM_package p, const char *key)
3110 {
3111     return ZOOM_options_get (p->options, key);
3112 }
3113
3114
3115 ZOOM_API(void)
3116 ZOOM_package_option_set (ZOOM_package p, const char *key,
3117                               const char *val)
3118 {
3119     ZOOM_options_set (p->options, key, val);
3120 }
3121
3122 static int ZOOM_connection_exec_task (ZOOM_connection c)
3123 {
3124     ZOOM_task task = c->tasks;
3125     zoom_ret ret = zoom_complete;
3126
3127     if (!task)
3128         return 0;
3129     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3130              c, task->which, task->running);
3131     if (c->error != ZOOM_ERROR_NONE)
3132     {
3133         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3134                 "removing tasks because of error = %d", c, c->error);
3135         ZOOM_connection_remove_tasks (c);
3136         return 0;
3137     }
3138     if (task->running)
3139     {
3140         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3141                  "task already running", c);
3142         return 0;
3143     }
3144     task->running = 1;
3145     ret = zoom_complete;
3146     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3147     {
3148         switch (task->which)
3149         {
3150         case ZOOM_TASK_SEARCH:
3151             if (c->proto == PROTO_HTTP)
3152                 ret = ZOOM_connection_srw_send_search(c);
3153             else
3154                 ret = ZOOM_connection_send_search(c);
3155             break;
3156         case ZOOM_TASK_RETRIEVE:
3157             if (c->proto == PROTO_HTTP)
3158                 ret = ZOOM_connection_srw_send_search(c);
3159             else
3160                 ret = send_present (c);
3161             break;
3162         case ZOOM_TASK_CONNECT:
3163             ret = do_connect(c);
3164             break;
3165         case ZOOM_TASK_SCAN:
3166             ret = send_scan(c);
3167             break;
3168         case ZOOM_TASK_PACKAGE:
3169             ret = send_package(c);
3170             break;
3171         case ZOOM_TASK_SORT:
3172             c->tasks->u.sort.resultset->r_sort_spec =
3173                 c->tasks->u.sort.q->sort_spec;
3174             ret = send_sort(c, c->tasks->u.sort.resultset);
3175             break;
3176         }
3177     }
3178     else
3179     {
3180         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3181                 "remove tasks because no connection exist", c);
3182         ZOOM_connection_remove_tasks (c);
3183     }
3184     if (ret == zoom_complete)
3185     {
3186         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3187                  "task removed (complete)", c);
3188         ZOOM_connection_remove_task (c);
3189         return 0;
3190     }
3191     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3192             "task pending", c);
3193     return 1;
3194 }
3195
3196 static zoom_ret send_sort_present (ZOOM_connection c)
3197 {
3198     zoom_ret r = zoom_complete;
3199
3200     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3201         r = send_sort (c, c->tasks->u.search.resultset);
3202     if (r == zoom_complete)
3203         r = send_present (c);
3204     return r;
3205 }
3206
3207 static int es_response (ZOOM_connection c,
3208                         Z_ExtendedServicesResponse *res)
3209 {
3210     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3211         return 0;
3212     if (res->diagnostics && res->num_diagnostics > 0)
3213         response_diag(c, res->diagnostics[0]);
3214     if (res->taskPackage &&
3215         res->taskPackage->which == Z_External_extendedService)
3216     {
3217         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3218         Odr_oct *id = taskPackage->targetReference;
3219
3220         if (id)
3221             ZOOM_options_setl (c->tasks->u.package->options,
3222                                "targetReference", (char*) id->buf, id->len);
3223     }
3224     if (res->taskPackage &&
3225         res->taskPackage->which == Z_External_octet)
3226     {
3227         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3228         ZOOM_options_setl (c->tasks->u.package->options,
3229                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
3230     }
3231     return 1;
3232 }
3233
3234 static void interpret_init_diag(ZOOM_connection c,
3235                                 Z_DiagnosticFormat *diag)
3236 {
3237     if (diag->num > 0)
3238     {
3239         Z_DiagnosticFormat_s *ds = diag->elements[0];
3240         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3241             response_default_diag(c, ds->u.defaultDiagRec);
3242     }
3243 }
3244
3245
3246 static void interpret_otherinformation_field(ZOOM_connection c,
3247                                              Z_OtherInformation *ui)
3248 {
3249     int i;
3250     for (i = 0; i < ui->num_elements; i++)
3251     {
3252         Z_OtherInformationUnit *unit = ui->list[i];
3253         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3254             unit->information.externallyDefinedInfo &&
3255             unit->information.externallyDefinedInfo->which ==
3256             Z_External_diag1)
3257         {
3258             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3259         }
3260     }
3261 }
3262
3263 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3264 {
3265     Z_InitResponse *initrs;
3266
3267     c->mask = 0;
3268     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3269     switch(apdu->which)
3270     {
3271     case Z_APDU_initResponse:
3272         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3273         initrs = apdu->u.initResponse;
3274         ZOOM_connection_option_set(c, "serverImplementationId",
3275                                    initrs->implementationId ?
3276                                    initrs->implementationId : "");
3277         ZOOM_connection_option_set(c, "serverImplementationName",
3278                                    initrs->implementationName ?
3279                                    initrs->implementationName : "");
3280         ZOOM_connection_option_set(c, "serverImplementationVersion",
3281                                    initrs->implementationVersion ?
3282                                    initrs->implementationVersion : "");
3283         /* Set the three old options too, for old applications */
3284         ZOOM_connection_option_set(c, "targetImplementationId",
3285                                    initrs->implementationId ?
3286                                    initrs->implementationId : "");
3287         ZOOM_connection_option_set(c, "targetImplementationName",
3288                                    initrs->implementationName ?
3289                                    initrs->implementationName : "");
3290         ZOOM_connection_option_set(c, "targetImplementationVersion",
3291                                    initrs->implementationVersion ?
3292                                    initrs->implementationVersion : "");
3293         if (!*initrs->result)
3294         {
3295             Z_External *uif = initrs->userInformationField;
3296
3297             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3298
3299             if (uif && uif->which == Z_External_userInfo1)
3300                 interpret_otherinformation_field(c, uif->u.userInfo1);
3301         }
3302         else
3303         {
3304             char *cookie =
3305                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3306                                           VAL_COOKIE, 1, 0);
3307             xfree (c->cookie_in);
3308             c->cookie_in = 0;
3309             if (cookie)
3310                 c->cookie_in = xstrdup(cookie);
3311             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3312                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3313                 c->support_named_resultsets = 1;
3314             if (c->tasks)
3315             {
3316                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3317                 ZOOM_connection_remove_task (c);
3318             }
3319             ZOOM_connection_exec_task (c);
3320         }
3321         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3322         {
3323             NMEM tmpmem = nmem_create();
3324             Z_CharSetandLanguageNegotiation *p =
3325                 yaz_get_charneg_record(initrs->otherInfo);
3326
3327             if (p)
3328             {
3329                 char *charset = NULL, *lang = NULL;
3330                 int sel;
3331
3332                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3333                 yaz_log(log_details, "%p recv_apdu target accepted: "
3334                         "charset %s, language %s, select %d",
3335                         c,
3336                         charset ? charset : "none", lang ? lang : "none", sel);
3337                 if (charset)
3338                     ZOOM_connection_option_set (c, "negotiation-charset",
3339                                                 charset);
3340                 if (lang)
3341                     ZOOM_connection_option_set (c, "negotiation-lang",
3342                                                 lang);
3343
3344                 ZOOM_connection_option_set (
3345                     c,  "negotiation-charset-in-effect-for-records",
3346                     (sel != 0) ? "1" : "0");
3347                 nmem_destroy(tmpmem);
3348             }
3349         }
3350         break;
3351     case Z_APDU_searchResponse:
3352         yaz_log(log_api, "%p recv_apdu Search response", c);
3353         handle_search_response (c, apdu->u.searchResponse);
3354         if (send_sort_present (c) == zoom_complete)
3355             ZOOM_connection_remove_task (c);
3356         break;
3357     case Z_APDU_presentResponse:
3358         yaz_log(log_api, "%p recv_apdu Present response", c);
3359         handle_present_response (c, apdu->u.presentResponse);
3360         if (send_present (c) == zoom_complete)
3361             ZOOM_connection_remove_task (c);
3362         break;
3363     case Z_APDU_sortResponse:
3364         yaz_log(log_api, "%p recv_apdu Sort response", c);
3365         sort_response (c, apdu->u.sortResponse);
3366         if (send_present (c) == zoom_complete)
3367             ZOOM_connection_remove_task (c);
3368         break;
3369     case Z_APDU_scanResponse:
3370         yaz_log(log_api, "%p recv_apdu Scan response", c);
3371         scan_response (c, apdu->u.scanResponse);
3372         ZOOM_connection_remove_task (c);
3373         break;
3374     case Z_APDU_extendedServicesResponse:
3375         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3376         es_response (c, apdu->u.extendedServicesResponse);
3377         ZOOM_connection_remove_task (c);
3378         break;
3379     case Z_APDU_close:
3380         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3381         if (c->reconnect_ok)
3382         {
3383             do_close(c);
3384             c->tasks->running = 0;
3385             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3386         }
3387         else
3388         {
3389             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3390             do_close(c);
3391         }
3392         break;
3393     default:
3394         yaz_log(log_api, "%p Received unknown PDU", c);
3395         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3396         do_close(c);
3397     }
3398 }
3399
3400 #if HAVE_XML2
3401 static void handle_srw_response(ZOOM_connection c,
3402                                 Z_SRW_searchRetrieveResponse *res)
3403 {
3404     ZOOM_resultset resultset = 0;
3405     int i;
3406     NMEM nmem;
3407     ZOOM_Event event;
3408
3409     if (!c->tasks)
3410         return;
3411
3412     if (c->tasks->which == ZOOM_TASK_SEARCH)
3413         resultset = c->tasks->u.search.resultset;
3414     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3415         resultset = c->tasks->u.retrieve.resultset;
3416     else
3417         return ;
3418
3419     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3420     ZOOM_connection_put_event(c, event);
3421
3422     resultset->size = 0;
3423
3424     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3425
3426     if (res->numberOfRecords)
3427         resultset->size = *res->numberOfRecords;
3428
3429     for (i = 0; i<res->num_records; i++)
3430     {
3431         int pos;
3432
3433         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3434             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3435
3436         if (res->records[i].recordPosition &&
3437             *res->records[i].recordPosition > 0)
3438             pos = *res->records[i].recordPosition - 1;
3439         else
3440             pos = resultset->start + i;
3441
3442         npr->databaseName = 0;
3443         npr->which = Z_NamePlusRecord_databaseRecord;
3444         npr->u.databaseRecord = (Z_External *)
3445             odr_malloc(c->odr_in, sizeof(Z_External));
3446         npr->u.databaseRecord->descriptor = 0;
3447         npr->u.databaseRecord->direct_reference =
3448             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3449         npr->u.databaseRecord->which = Z_External_octet;
3450
3451         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3452             odr_malloc(c->odr_in, sizeof(Odr_oct));
3453         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3454             res->records[i].recordData_buf;
3455         npr->u.databaseRecord->u.octet_aligned->len =
3456             npr->u.databaseRecord->u.octet_aligned->size =
3457             res->records[i].recordData_len;
3458         record_cache_add (resultset, npr, pos);
3459     }
3460     if (res->num_diagnostics > 0)
3461     {
3462         const char *uri = res->diagnostics[0].uri;
3463         if (uri)
3464         {
3465             int code = 0;
3466             const char *cp;
3467             if ((cp = strrchr(uri, '/')))
3468                 code = atoi(cp+1);
3469             set_dset_error(c, code, uri,
3470                            res->diagnostics[0].details, 0);
3471         }
3472     }
3473     nmem = odr_extract_mem(c->odr_in);
3474     nmem_transfer(resultset->odr->mem, nmem);
3475     nmem_destroy(nmem);
3476 }
3477 #endif
3478
3479 #if HAVE_XML2
3480 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3481 {
3482     int ret = -1;
3483     const char *content_type = z_HTTP_header_lookup(hres->headers,
3484                                                     "Content-Type");
3485     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3486                                                        "Connection");
3487     c->mask = 0;
3488     yaz_log(log_details, "%p handle_http", c);
3489
3490     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3491     {
3492         Z_SOAP *soap_package = 0;
3493         ODR o = c->odr_in;
3494         Z_SOAP_Handler soap_handlers[2] = {
3495             {"http://www.loc.gov/zing/srw/", 0,
3496              (Z_SOAP_fun) yaz_srw_codec},
3497             {0, 0, 0}
3498         };
3499         ret = z_soap_codec(o, &soap_package,
3500                            &hres->content_buf, &hres->content_len,
3501                            soap_handlers);
3502         if (!ret && soap_package->which == Z_SOAP_generic &&
3503             soap_package->u.generic->no == 0)
3504         {
3505             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3506             if (sr->which == Z_SRW_searchRetrieve_response)
3507                 handle_srw_response(c, sr->u.response);
3508             else
3509                 ret = -1;
3510         }
3511         else if (!ret && (soap_package->which == Z_SOAP_fault
3512                           || soap_package->which == Z_SOAP_error))
3513         {
3514             set_HTTP_error(c, hres->code,
3515                            soap_package->u.fault->fault_code,
3516                            soap_package->u.fault->fault_string);
3517         }
3518         else
3519             ret = -1;
3520     }
3521     if (ret)
3522     {
3523         if (hres->code != 200)
3524             set_HTTP_error(c, hres->code, 0, 0);
3525         else
3526             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3527         do_close (c);
3528     }
3529     ZOOM_connection_remove_task(c);
3530     if (!strcmp(hres->version, "1.0"))
3531     {
3532         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3533         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3534             do_close(c);
3535     }
3536     else
3537     {
3538         /* HTTP 1.1: only if no close we stay alive .. */
3539         if (connection_head && !strcmp(connection_head, "close"))
3540             do_close(c);
3541     }
3542 }
3543 #endif
3544
3545 static int do_read (ZOOM_connection c)
3546 {
3547     int r, more;
3548     ZOOM_Event event;
3549
3550     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3551     ZOOM_connection_put_event (c, event);
3552
3553     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3554     more = cs_more(c->cs);
3555     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3556     if (r == 1)
3557         return 0;
3558     if (r <= 0)
3559     {
3560         if (c->reconnect_ok)
3561         {
3562             do_close (c);
3563             c->reconnect_ok = 0;
3564             yaz_log(log_details, "%p do_read reconnect read", c);
3565             c->tasks->running = 0;
3566             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3567         }
3568         else
3569         {
3570             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3571             do_close (c);
3572         }
3573     }
3574     else
3575     {
3576         Z_GDU *gdu;
3577         ZOOM_Event event;
3578
3579         odr_reset (c->odr_in);
3580         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3581         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3582         ZOOM_connection_put_event (c, event);
3583
3584         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3585         {
3586             int x;
3587             int err = odr_geterrorx(c->odr_in, &x);
3588             char msg[60];
3589             const char *element = odr_getelement(c->odr_in);
3590             sprintf (msg, "ODR code %d:%d element=%-20s",
3591                      err, x, element ? element : "<unknown>");
3592             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3593             do_close (c);
3594         }
3595         else if (gdu->which == Z_GDU_Z3950)
3596             recv_apdu (c, gdu->u.z3950);
3597         else if (gdu->which == Z_GDU_HTTP_Response)
3598         {
3599 #if HAVE_XML2
3600             handle_http (c, gdu->u.HTTP_Response);
3601 #else
3602             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3603             do_close (c);
3604 #endif
3605         }
3606         c->reconnect_ok = 0;
3607     }
3608     return 1;
3609 }
3610
3611 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3612 {
3613     int r;
3614     ZOOM_Event event;
3615
3616     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3617     ZOOM_connection_put_event (c, event);
3618
3619     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3620     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3621     {
3622         yaz_log(log_details, "%p do_write_ex write failed", c);
3623         if (c->reconnect_ok)
3624         {
3625             do_close (c);
3626             c->reconnect_ok = 0;
3627             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3628             c->tasks->running = 0;
3629             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3630             return zoom_pending;
3631         }
3632         if (c->state == STATE_CONNECTING)
3633             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3634         else
3635             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3636         do_close (c);
3637         return zoom_complete;
3638     }
3639     else if (r == 1)
3640     {
3641         c->mask = ZOOM_SELECT_EXCEPT;
3642         if (c->cs->io_pending & CS_WANT_WRITE)
3643             c->mask += ZOOM_SELECT_WRITE;
3644         if (c->cs->io_pending & CS_WANT_READ)
3645             c->mask += ZOOM_SELECT_READ;
3646         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3647                 c, c->mask);
3648     }
3649     else
3650     {
3651         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3652         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3653                 c, c->mask);
3654     }
3655     return zoom_pending;
3656 }
3657
3658 static zoom_ret do_write(ZOOM_connection c)
3659 {
3660     return do_write_ex (c, c->buf_out, c->len_out);
3661 }
3662
3663
3664 ZOOM_API(const char *)
3665 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3666 {
3667     return ZOOM_options_get (c->options, key);
3668 }
3669
3670 ZOOM_API(const char *)
3671 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp)
3672 {
3673     return ZOOM_options_getl (c->options, key, lenp);
3674 }
3675
3676 ZOOM_API(void)
3677 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3678                             const char *val)
3679 {
3680     ZOOM_options_set (c->options, key, val);
3681 }
3682
3683 ZOOM_API(void)
3684 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3685                              const char *val, int len)
3686 {
3687     ZOOM_options_setl (c->options, key, val, len);
3688 }
3689
3690 ZOOM_API(const char *)
3691 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3692 {
3693     return ZOOM_options_get (r->options, key);
3694 }
3695
3696 ZOOM_API(void)
3697 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3698                                   const char *val)
3699 {
3700     ZOOM_options_set (r->options, key, val);
3701 }
3702
3703
3704 ZOOM_API(int)
3705 ZOOM_connection_errcode (ZOOM_connection c)
3706 {
3707     return ZOOM_connection_error (c, 0, 0);
3708 }
3709
3710 ZOOM_API(const char *)
3711 ZOOM_connection_errmsg (ZOOM_connection c)
3712 {
3713     const char *msg;
3714     ZOOM_connection_error (c, &msg, 0);
3715     return msg;
3716 }
3717
3718 ZOOM_API(const char *)
3719 ZOOM_connection_addinfo (ZOOM_connection c)
3720 {
3721     const char *addinfo;
3722     ZOOM_connection_error (c, 0, &addinfo);
3723     return addinfo;
3724 }
3725
3726 ZOOM_API(const char *)
3727 ZOOM_connection_diagset (ZOOM_connection c)
3728 {
3729     const char *diagset;
3730     ZOOM_connection_error_x (c, 0, 0, &diagset);
3731     return diagset;
3732 }
3733
3734 ZOOM_API(const char *)
3735 ZOOM_diag_str (int error)
3736 {
3737     switch (error)
3738     {
3739     case ZOOM_ERROR_NONE:
3740         return "No error";
3741     case ZOOM_ERROR_CONNECT:
3742         return "Connect failed";
3743     case ZOOM_ERROR_MEMORY:
3744         return "Out of memory";
3745     case ZOOM_ERROR_ENCODE:
3746         return "Encoding failed";
3747     case ZOOM_ERROR_DECODE:
3748         return "Decoding failed";
3749     case ZOOM_ERROR_CONNECTION_LOST:
3750         return "Connection lost";
3751     case ZOOM_ERROR_INIT:
3752         return "Init rejected";
3753     case ZOOM_ERROR_INTERNAL:
3754         return "Internal failure";
3755     case ZOOM_ERROR_TIMEOUT:
3756         return "Timeout";
3757     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3758         return "Unsupported protocol";
3759     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3760         return "Unsupported query type";
3761     case ZOOM_ERROR_INVALID_QUERY:
3762         return "Invalid query";
3763     case ZOOM_ERROR_CQL_PARSE:
3764         return "CQL parsing error";
3765     case ZOOM_ERROR_CQL_TRANSFORM:
3766         return "CQL transformation error";
3767     default:
3768         return diagbib1_str (error);
3769     }
3770 }
3771
3772 ZOOM_API(int)
3773 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3774                          const char **addinfo, const char **diagset)
3775 {
3776     int error = c->error;
3777     if (cp)
3778     {
3779         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3780             *cp = ZOOM_diag_str(error);
3781         else if (!strcmp(c->diagset, "HTTP"))
3782             *cp = z_HTTP_errmsg(c->error);
3783         else if (!strcmp(c->diagset, "Bib-1"))
3784             *cp = ZOOM_diag_str(error);
3785         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3786             *cp = yaz_diag_srw_str(c->error);
3787         else
3788             *cp = "Unknown error and diagnostic set";
3789     }
3790     if (addinfo)
3791         *addinfo = c->addinfo ? c->addinfo : "";
3792     if (diagset)
3793         *diagset = c->diagset ? c->diagset : "";
3794     return c->error;
3795 }
3796
3797 ZOOM_API(int)
3798 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3799                        const char **addinfo)
3800 {
3801     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3802 }
3803
3804 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3805 {
3806     ZOOM_Event event = 0;
3807     int r = cs_look(c->cs);
3808     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3809              c, mask, r);
3810
3811     if (r == CS_NONE)
3812     {
3813         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3814         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3815         do_close (c);
3816         ZOOM_connection_put_event (c, event);
3817     }
3818     else if (r == CS_CONNECT)
3819     {
3820         int ret;
3821         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3822
3823         ret = cs_rcvconnect (c->cs);
3824         yaz_log(log_details, "%p ZOOM_connection_do_io "
3825                 "cs_rcvconnect returned %d", c, ret);
3826         if (ret == 1)
3827         {
3828             c->mask = ZOOM_SELECT_EXCEPT;
3829             if (c->cs->io_pending & CS_WANT_WRITE)
3830                 c->mask += ZOOM_SELECT_WRITE;
3831             if (c->cs->io_pending & CS_WANT_READ)
3832                 c->mask += ZOOM_SELECT_READ;
3833             ZOOM_connection_put_event (c, event);
3834         }
3835         else if (ret == 0)
3836         {
3837             ZOOM_connection_put_event (c, event);
3838             get_cert(c);
3839             if (c->proto == PROTO_Z3950)
3840                 ZOOM_connection_send_init(c);
3841             else
3842             {
3843                 /* no init request for SRW .. */
3844                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3845                 ZOOM_connection_remove_task (c);
3846                 c->mask = 0;
3847                 ZOOM_connection_exec_task (c);
3848             }
3849             c->state = STATE_ESTABLISHED;
3850         }
3851         else
3852         {
3853             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3854             do_close (c);
3855             ZOOM_connection_put_event (c, event);
3856         }
3857     }
3858     else
3859     {
3860         if (mask & ZOOM_SELECT_READ)
3861             do_read (c);
3862         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3863             do_write (c);
3864     }
3865     return 1;
3866 }
3867
3868 ZOOM_API(int)
3869 ZOOM_connection_last_event(ZOOM_connection cs)
3870 {
3871     if (!cs)
3872         return ZOOM_EVENT_NONE;
3873     return cs->last_event;
3874 }
3875
3876 ZOOM_API(int)
3877 ZOOM_event (int no, ZOOM_connection *cs)
3878 {
3879     int timeout = 30;      /* default timeout in seconds */
3880     int timeout_set = 0;   /* whether it was overriden at all */
3881 #if HAVE_SYS_POLL_H
3882     struct pollfd pollfds[1024];
3883     ZOOM_connection poll_cs[1024];
3884 #else
3885     struct timeval tv;
3886     fd_set input, output, except;
3887 #endif
3888     int i, r, nfds;
3889     int max_fd = 0;
3890
3891     for (i = 0; i<no; i++)
3892     {
3893         ZOOM_connection c = cs[i];
3894         ZOOM_Event event;
3895         if (c && (event = ZOOM_connection_get_event(c)))
3896         {
3897             ZOOM_Event_destroy (event);
3898             return i+1;
3899         }
3900     }
3901     for (i = 0; i<no; i++)
3902     {
3903         ZOOM_connection c = cs[i];
3904         ZOOM_Event event;
3905         if (c && ZOOM_connection_exec_task (c))
3906         {
3907             if ((event = ZOOM_connection_get_event(c)))
3908             {
3909                 ZOOM_Event_destroy (event);
3910                 return i+1;
3911             }
3912         }
3913     }
3914 #if HAVE_SYS_POLL_H
3915
3916 #else
3917     FD_ZERO (&input);
3918     FD_ZERO (&output);
3919     FD_ZERO (&except);
3920 #endif
3921     nfds = 0;
3922     for (i = 0; i<no; i++)
3923     {
3924         ZOOM_connection c = cs[i];
3925         int fd, mask;
3926         int this_timeout;
3927
3928         if (!c)
3929             continue;
3930         fd = z3950_connection_socket(c);
3931         mask = z3950_connection_mask(c);
3932
3933         if (fd == -1)
3934             continue;
3935         if (max_fd < fd)
3936             max_fd = fd;
3937
3938         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3939         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3940         if (this_timeout != -2)
3941         {
3942             /* ensure the minimum timeout is used */
3943             if (!timeout_set)
3944                 timeout = this_timeout;
3945             else if (this_timeout != -1 && this_timeout < timeout)
3946                 timeout = this_timeout;
3947             timeout_set = 1;
3948         }
3949 #if HAVE_SYS_POLL_H
3950         if (mask)
3951         {
3952             short poll_events = 0;
3953
3954             if (mask & ZOOM_SELECT_READ)
3955                 poll_events += POLLIN;
3956             if (mask & ZOOM_SELECT_WRITE)
3957                 poll_events += POLLOUT;
3958             if (mask & ZOOM_SELECT_EXCEPT)
3959                 poll_events += POLLERR;
3960             pollfds[nfds].fd = fd;
3961             pollfds[nfds].events = poll_events;
3962             pollfds[nfds].revents = 0;
3963             poll_cs[nfds] = c;
3964             nfds++;
3965         }
3966 #else
3967         if (mask & ZOOM_SELECT_READ)
3968         {
3969             FD_SET (fd, &input);
3970             nfds++;
3971         }
3972         if (mask & ZOOM_SELECT_WRITE)
3973         {
3974             FD_SET (fd, &output);
3975             nfds++;
3976         }
3977         if (mask & ZOOM_SELECT_EXCEPT)
3978         {
3979             FD_SET (fd, &except);
3980             nfds++;
3981         }
3982 #endif
3983     }
3984     if (!nfds)
3985         return 0;
3986
3987 #if HAVE_SYS_POLL_H
3988     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3989     for (i = 0; i<nfds; i++)
3990     {
3991         ZOOM_connection c = poll_cs[i];
3992         if (r && c->mask)
3993         {
3994             int mask = 0;
3995             if (pollfds[i].revents & POLLIN)
3996                 mask += ZOOM_SELECT_READ;
3997             if (pollfds[i].revents & POLLOUT)
3998                 mask += ZOOM_SELECT_WRITE;
3999             if (pollfds[i].revents & POLLERR)
4000                 mask += ZOOM_SELECT_EXCEPT;
4001             if (mask)
4002                 ZOOM_connection_do_io(c, mask);
4003         }
4004         else if (r == 0 && c->mask)
4005         {
4006             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4007             /* timeout and this connection was waiting */
4008             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4009             do_close (c);
4010             ZOOM_connection_put_event(c, event);
4011         }
4012     }
4013 #else
4014     tv.tv_sec = timeout;
4015     tv.tv_usec = 0;
4016     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
4017     for (i = 0; i<no; i++)
4018     {
4019         ZOOM_connection c = cs[i];
4020         int fd, mask;
4021
4022         if (!c)
4023             continue;
4024         fd = z3950_connection_socket(c);
4025         mask = 0;
4026         if (r && c->mask)
4027         {
4028             /* no timeout and real socket */
4029             if (FD_ISSET(fd, &input))
4030                 mask += ZOOM_SELECT_READ;
4031             if (FD_ISSET(fd, &output))
4032                 mask += ZOOM_SELECT_WRITE;
4033             if (FD_ISSET(fd, &except))
4034                 mask += ZOOM_SELECT_EXCEPT;
4035             if (mask)
4036                 ZOOM_connection_do_io(c, mask);
4037         }
4038         if (r == 0 && c->mask)
4039         {
4040             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4041             /* timeout and this connection was waiting */
4042             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4043             do_close (c);
4044             ZOOM_connection_put_event(c, event);
4045         }
4046     }
4047 #endif
4048     for (i = 0; i<no; i++)
4049     {
4050         ZOOM_connection c = cs[i];
4051         ZOOM_Event event;
4052         if (c && (event = ZOOM_connection_get_event(c)))
4053         {
4054             ZOOM_Event_destroy (event);
4055             return i+1;
4056         }
4057     }
4058     return 0;
4059 }
4060
4061
4062 /*
4063  * Returns an xmalloc()d string containing RPN that corresponds to the
4064  * CQL passed in.  On error, sets the Connection object's error state
4065  * and returns a null pointer.
4066  * ### We could cache CQL parser and/or transformer in Connection.
4067  */
4068 static char *cql2pqf(ZOOM_connection c, const char *cql)
4069 {
4070     CQL_parser parser;
4071     int error;
4072     struct cql_node *node;
4073     const char *cqlfile;
4074     static cql_transform_t trans;
4075     char pqfbuf[512];
4076
4077     parser = cql_parser_create();
4078     if ((error = cql_parser_string(parser, cql)) != 0) {
4079         cql_parser_destroy(parser);
4080         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4081         return 0;
4082     }
4083
4084     node = cql_parser_result(parser);
4085     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4086
4087     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4088     if (cqlfile == 0) {
4089         cql_parser_destroy(parser);
4090         cql_node_destroy(node);
4091         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4092         return 0;
4093     }
4094
4095     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4096         char buf[512];
4097         cql_parser_destroy(parser);
4098         cql_node_destroy(node);
4099         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4100                 cqlfile, strerror(errno));
4101         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4102         return 0;
4103     }
4104
4105     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4106     cql_parser_destroy(parser);
4107     cql_node_destroy(node);
4108     if (error != 0) {
4109         char buf[512];
4110         const char *addinfo;
4111         error = cql_transform_error(trans, &addinfo);
4112         cql_transform_close(trans);
4113         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4114         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4115         return 0;
4116     }
4117
4118     cql_transform_close(trans);
4119     return xstrdup(pqfbuf);
4120 }
4121
4122
4123 /*
4124  * Local variables:
4125  * c-basic-offset: 4
4126  * indent-tabs-mode: nil
4127  * End:
4128  * vim: shiftwidth=4 tabstop=8 expandtab
4129  */
4130