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 1.42 2005-06-06 10:29:33 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 "zoom-p.h"
  15
  16 #include <yaz/yaz-util.h>
  17 #include <yaz/xmalloc.h>
  18 #include <yaz/otherinfo.h>
  19 #include <yaz/log.h>
  20 #include <yaz/pquery.h>
  21 #include <yaz/marcdisp.h>
  22 #include <yaz/diagbib1.h>
  23 #include <yaz/charneg.h>
  24 #include <yaz/ill.h>
  25 #include <yaz/srw.h>
  26
  27 #if HAVE_SYS_TYPES_H
  28 #include <sys/types.h>
  29 #endif
  30 #if HAVE_SYS_TIME_H
  31 #include <sys/time.h>
  32 #endif
  33 #if HAVE_SYS_POLL_H
  34 #include <sys/poll.h>
  35 #endif
  36 #if HAVE_SYS_SELECT_H
  37 #include <sys/select.h>
  38 #endif
  39 #ifdef WIN32
  40 #include <winsock.h>
  41 #endif
  42
  43 static int log_level = 0;
  44 static int log_level_initialized = 0;
  45
  46 typedef enum {
  47     zoom_pending,
  48     zoom_complete
  49 } zoom_ret;
  50
  51 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  52 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  53
  54 static ZOOM_Event ZOOM_Event_create (int kind)
  55 {
  56     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  57     event->kind = kind;
  58     event->next = 0;
  59     event->prev = 0;
  60     return event;
  61 }
  62
  63 static void ZOOM_Event_destroy (ZOOM_Event event)
  64 {
  65     xfree (event);
  66 }
  67
  68 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  69 {
  70     if (c->m_queue_back)
  71     {
  72         c->m_queue_back->prev = event;
  73         assert (c->m_queue_front);
  74     }
  75     else
  76     {
  77         assert (!c->m_queue_front);
  78         c->m_queue_front = event;
  79     }
  80     event->next = c->m_queue_back;
  81     event->prev = 0;
  82     c->m_queue_back = event;
  83 }
  84
  85 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
  86 {
  87     ZOOM_Event event = c->m_queue_front;
  88     if (!event)
  89     {
  90         c->last_event = ZOOM_EVENT_NONE;
  91         return 0;
  92     }
  93     assert (c->m_queue_back);
  94     c->m_queue_front = event->prev;
  95     if (c->m_queue_front)
  96     {
  97         assert (c->m_queue_back);
  98         c->m_queue_front->next = 0;
  99     }
 100     else
 101         c->m_queue_back = 0;
 102     c->last_event = event->kind;
 103     return event;
 104 }
 105
 106
 107 static void set_dset_error (ZOOM_connection c, int error,
 108                             const char *dset,
 109                             const char *addinfo, const char *addinfo2)
 110 {
 111     char *cp;
 112     if (!log_level_initialized)
 113     {
 114         log_level = yaz_log_module_level("zoom");
 115         log_level_initialized = 1;
 116     }
 117
 118     xfree (c->addinfo);
 119     c->addinfo = 0;
 120     c->error = error;
 121     if (!c->diagset || strcmp(dset, c->diagset))
 122     {
 123         xfree(c->diagset);
 124         c->diagset = xstrdup(dset);
 125         /* remove integer part from SRW diagset .. */
 126         if ((cp = strrchr(c->diagset, '/')))
 127            *cp = '\0';
 128     }
 129     if (addinfo && addinfo2)
 130     {
 131         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 132         strcpy(c->addinfo, addinfo);
 133         strcat(c->addinfo, addinfo2);
 134     }
 135     else if (addinfo)
 136         c->addinfo = xstrdup(addinfo);
 137     if (error)
 138         yaz_log(log_level, "Error %s %s:%d %s %s",
 139                 c->host_port ? c->host_port : "<>", dset, error,
 140                 addinfo ? addinfo : "",
 141                 addinfo2 ? addinfo2 : "");
 142 }
 143
 144 #if HAVE_XML2
 145 static void set_HTTP_error (ZOOM_connection c, int error,
 146                             const char *addinfo, const char *addinfo2)
 147 {
 148     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 149 }
 150 #endif
 151
 152 static void set_ZOOM_error (ZOOM_connection c, int error,
 153                             const char *addinfo)
 154 {
 155     set_dset_error(c, error, "ZOOM", addinfo, 0);
 156 }
 157
 158 static void clear_error (ZOOM_connection c)
 159 {
 160
 161     switch (c->error)
 162     {
 163     case ZOOM_ERROR_CONNECT:
 164     case ZOOM_ERROR_MEMORY:
 165     case ZOOM_ERROR_DECODE:
 166     case ZOOM_ERROR_CONNECTION_LOST:
 167     case ZOOM_ERROR_INIT:
 168     case ZOOM_ERROR_INTERNAL:
 169     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 170         break;
 171     default:
 172         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 173     }
 174 }
 175
 176 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 177 {
 178     ZOOM_task *taskp = &c->tasks;
 179     while (*taskp)
 180         taskp = &(*taskp)->next;
 181     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 182     (*taskp)->running = 0;
 183     (*taskp)->which = which;
 184     (*taskp)->next = 0;
 185     clear_error (c);
 186     return *taskp;
 187 }
 188
 189 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 190 {
 191     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 192
 193     task->next = c->tasks;
 194     c->tasks = task;
 195
 196     task->running = 0;
 197     task->which = which;
 198     clear_error (c);
 199     return task;
 200 }
 201
 202 void ZOOM_connection_remove_task (ZOOM_connection c)
 203 {
 204     ZOOM_task task = c->tasks;
 205
 206     if (task)
 207     {
 208         c->tasks = task->next;
 209         switch (task->which)
 210         {
 211         case ZOOM_TASK_SEARCH:
 212             ZOOM_resultset_destroy (task->u.search.resultset);
 213             break;
 214         case ZOOM_TASK_RETRIEVE:
 215             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 216             break;
 217         case ZOOM_TASK_CONNECT:
 218             break;
 219         case ZOOM_TASK_SCAN:
 220             ZOOM_scanset_destroy (task->u.scan.scan);
 221             break;
 222         case ZOOM_TASK_PACKAGE:
 223             ZOOM_package_destroy (task->u.package);
 224             break;
 225         case ZOOM_TASK_SORT:
 226             ZOOM_resultset_destroy (task->u.sort.resultset);
 227             ZOOM_query_destroy(task->u.sort.q);
 228             break;
 229         default:
 230             assert (0);
 231         }
 232         xfree (task);
 233     }
 234 }
 235
 236 static int ZOOM_connection_exec_task (ZOOM_connection c);
 237
 238 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 239 {
 240     while (c->tasks)
 241         ZOOM_connection_remove_task(c);
 242 }
 243
 244 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 245
 246 ZOOM_API(ZOOM_connection)
 247 ZOOM_connection_create (ZOOM_options options)
 248 {
 249     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 250
 251     if (!log_level_initialized)
 252     {
 253         log_level = yaz_log_module_level("zoom");
 254         log_level_initialized = 1;
 255     }
 256
 257     c->proto = PROTO_Z3950;
 258     c->cs = 0;
 259     c->mask = 0;
 260     c->reconnect_ok = 0;
 261     c->state = STATE_IDLE;
 262     c->addinfo = 0;
 263     c->diagset = 0;
 264     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 265     c->buf_in = 0;
 266     c->len_in = 0;
 267     c->buf_out = 0;
 268     c->len_out = 0;
 269     c->resultsets = 0;
 270
 271     c->options = ZOOM_options_create_with_parent(options);
 272
 273     c->host_port = 0;
 274     c->path = 0;
 275     c->proxy = 0;
 276
 277     c->charset = c->lang = 0;
 278
 279     c->cookie_out = 0;
 280     c->cookie_in = 0;
 281     c->client_IP = 0;
 282     c->tasks = 0;
 283
 284     c->odr_in = odr_createmem (ODR_DECODE);
 285     c->odr_out = odr_createmem (ODR_ENCODE);
 286
 287     c->async = 0;
 288     c->support_named_resultsets = 0;
 289     c->last_event = ZOOM_EVENT_NONE;
 290
 291     c->m_queue_front = 0;
 292     c->m_queue_back = 0;
 293     return c;
 294 }
 295
 296 /* set database names. Take local databases (if set); otherwise
 297    take databases given in ZURL (if set); otherwise use Default */
 298 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 299                                  int *num)
 300 {
 301     char **databaseNames;
 302     const char *cp = ZOOM_options_get (options, "databaseName");
 303
 304     if (!cp || !*cp)
 305     {
 306         if (strncmp (con->host_port, "unix:", 5) == 0)
 307             cp = strchr(con->host_port+5, ':');
 308         else
 309             cp = strchr(con->host_port, '/');
 310         if (cp)
 311             cp++;
 312     }
 313     if (!cp)
 314         cp = "Default";
 315     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 316     return databaseNames;
 317 }
 318
 319 ZOOM_API(ZOOM_connection)
 320 ZOOM_connection_new (const char *host, int portnum)
 321 {
 322     ZOOM_connection c = ZOOM_connection_create (0);
 323
 324     ZOOM_connection_connect (c, host, portnum);
 325     return c;
 326 }
 327
 328 ZOOM_API(void)
 329 ZOOM_connection_connect(ZOOM_connection c,
 330                         const char *host, int portnum)
 331 {
 332     const char *val;
 333     ZOOM_task task;
 334
 335     if (!log_level_initialized)
 336     {
 337         log_level = yaz_log_module_level("zoom");
 338         log_level_initialized = 1;
 339     }
 340
 341     if (c->cs)
 342     {
 343         yaz_log (log_level, "reconnect");
 344         c->reconnect_ok = 1;
 345         return;
 346     }
 347     yaz_log(log_level, "connect");
 348     xfree (c->proxy);
 349     val = ZOOM_options_get (c->options, "proxy");
 350     if (val && *val)
 351         c->proxy = xstrdup (val);
 352     else
 353         c->proxy = 0;
 354
 355     xfree (c->charset);
 356     val = ZOOM_options_get (c->options, "charset");
 357     if (val && *val)
 358         c->charset = xstrdup (val);
 359     else
 360         c->charset = 0;
 361
 362     xfree (c->lang);
 363     val = ZOOM_options_get (c->options, "lang");
 364     if (val && *val)
 365         c->lang = xstrdup (val);
 366     else
 367         c->lang = 0;
 368
 369     xfree (c->host_port);
 370     if (portnum)
 371     {
 372         char hostn[128];
 373         sprintf (hostn, "%.80s:%d", host, portnum);
 374         c->host_port = xstrdup(hostn);
 375     }
 376     else
 377         c->host_port = xstrdup(host);
 378
 379     ZOOM_options_set(c->options, "host", c->host_port);
 380
 381     val = ZOOM_options_get (c->options, "cookie");
 382     if (val && *val)
 383         c->cookie_out = xstrdup (val);
 384
 385     val = ZOOM_options_get (c->options, "clientIP");
 386     if (val && *val)
 387         c->client_IP = xstrdup (val);
 388
 389     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 390
 391     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 392
 393     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 394
 395     if (!c->async)
 396     {
 397         while (ZOOM_event (1, &c))
 398             ;
 399     }
 400 }
 401
 402 ZOOM_API(ZOOM_query)
 403 ZOOM_query_create(void)
 404 {
 405     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 406
 407     s->refcount = 1;
 408     s->z_query = 0;
 409     s->sort_spec = 0;
 410     s->odr = odr_createmem (ODR_ENCODE);
 411     s->query_string = 0;
 412
 413     return s;
 414 }
 415
 416 ZOOM_API(void)
 417 ZOOM_query_destroy(ZOOM_query s)
 418 {
 419     if (!s)
 420         return;
 421
 422     (s->refcount)--;
 423     yaz_log (log_level, "ZOOM_query_destroy count=%d", s->refcount);
 424     if (s->refcount == 0)
 425     {
 426         odr_destroy (s->odr);
 427         xfree (s);
 428     }
 429 }
 430
 431 ZOOM_API(int)
 432 ZOOM_query_prefix(ZOOM_query s, const char *str)
 433 {
 434     s->query_string = odr_strdup(s->odr, str);
 435     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 436     s->z_query->which = Z_Query_type_1;
 437     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 438     if (!s->z_query->u.type_1)
 439     {
 440         s->z_query = 0;
 441         return -1;
 442     }
 443     return 0;
 444 }
 445
 446 ZOOM_API(int)
 447 ZOOM_query_cql(ZOOM_query s, const char *str)
 448 {
 449     Z_External *ext;
 450
 451     s->query_string = odr_strdup(s->odr, str);
 452
 453     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 454     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 455     ext->indirect_reference = 0;
 456     ext->descriptor = 0;
 457     ext->which = Z_External_CQL;
 458     ext->u.cql = s->query_string;
 459
 460     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 461     s->z_query->which = Z_Query_type_104;
 462     s->z_query->u.type_104 =  ext;
 463
 464     return 0;
 465 }
 466
 467 ZOOM_API(int)
 468 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 469 {
 470     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 471     if (!s->sort_spec)
 472         return -1;
 473     return 0;
 474 }
 475
 476 static zoom_ret do_write(ZOOM_connection c);
 477
 478 ZOOM_API(void)
 479 ZOOM_connection_destroy(ZOOM_connection c)
 480 {
 481     ZOOM_resultset r;
 482     if (!c)
 483         return;
 484     if (c->cs)
 485         cs_close (c->cs);
 486     for (r = c->resultsets; r; r = r->next)
 487         r->connection = 0;
 488
 489     xfree (c->buf_in);
 490     xfree (c->addinfo);
 491     xfree (c->diagset);
 492     odr_destroy (c->odr_in);
 493     odr_destroy (c->odr_out);
 494     ZOOM_options_destroy (c->options);
 495     ZOOM_connection_remove_tasks (c);
 496     xfree (c->host_port);
 497     xfree (c->path);
 498     xfree (c->proxy);
 499     xfree (c->charset);
 500     xfree (c->lang);
 501     xfree (c->cookie_out);
 502     xfree (c->cookie_in);
 503     xfree (c->client_IP);
 504     xfree (c);
 505 }
 506
 507 void ZOOM_resultset_addref (ZOOM_resultset r)
 508 {
 509     if (r)
 510     {
 511         (r->refcount)++;
 512         yaz_log (log_level, "ZOOM_resultset_addref r=%p count=%d",
 513                  r, r->refcount);
 514     }
 515 }
 516
 517 ZOOM_resultset ZOOM_resultset_create ()
 518 {
 519     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 520
 521     if (!log_level_initialized)
 522     {
 523         log_level = yaz_log_module_level("zoom");
 524         log_level_initialized = 1;
 525     }
 526
 527     yaz_log (log_level, "ZOOM_resultset_create r = %p", r);
 528     r->refcount = 1;
 529     r->size = 0;
 530     r->odr = odr_createmem (ODR_ENCODE);
 531     r->start = 0;
 532     r->piggyback = 1;
 533     r->setname = 0;
 534     r->schema = 0;
 535     r->count = 0;
 536     r->step = 0;
 537     r->record_cache = 0;
 538     r->r_sort_spec = 0;
 539     r->query = 0;
 540     r->connection = 0;
 541     r->next = 0;
 542     return r;
 543 }
 544
 545 ZOOM_API(ZOOM_resultset)
 546 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 547 {
 548     ZOOM_resultset r;
 549     ZOOM_query s = ZOOM_query_create();
 550
 551     ZOOM_query_prefix (s, q);
 552
 553     r = ZOOM_connection_search (c, s);
 554     ZOOM_query_destroy (s);
 555     return r;
 556 }
 557
 558 ZOOM_API(ZOOM_resultset)
 559 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 560 {
 561     ZOOM_resultset r = ZOOM_resultset_create ();
 562     ZOOM_task task;
 563     const char *cp;
 564
 565     r->r_sort_spec = q->sort_spec;
 566     r->query = q;
 567
 568     r->options = ZOOM_options_create_with_parent(c->options);
 569
 570     r->start = ZOOM_options_get_int(r->options, "start", 0);
 571     r->count = ZOOM_options_get_int(r->options, "count", 0);
 572     {
 573         /* If "presentChunk" is defined use that; otherwise "step" */
 574         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 575         r->step = ZOOM_options_get_int(r->options,
 576                                        (cp != 0 ? "presentChunk": "step"), 0);
 577     }
 578     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 579     cp = ZOOM_options_get (r->options, "setname");
 580     if (cp)
 581         r->setname = xstrdup(cp);
 582     cp = ZOOM_options_get (r->options, "schema");
 583     if (cp)
 584         r->schema = xstrdup(cp);
 585
 586     r->connection = c;
 587
 588     r->next = c->resultsets;
 589     c->resultsets = r;
 590
 591     if (c->host_port && c->proto == PROTO_HTTP)
 592     {
 593         if (!c->cs)
 594         {
 595             yaz_log(log_level, "NO COMSTACK");
 596             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 597         }
 598         else
 599         {
 600             yaz_log(log_level, "PREPARE FOR RECONNECT");
 601             c->reconnect_ok = 1;
 602         }
 603     }
 604
 605     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 606     task->u.search.resultset = r;
 607     ZOOM_resultset_addref (r);
 608
 609     (q->refcount)++;
 610
 611     if (!c->async)
 612     {
 613         while (ZOOM_event (1, &c))
 614             ;
 615     }
 616     return r;
 617 }
 618
 619 ZOOM_API(void)
 620     ZOOM_resultset_sort(ZOOM_resultset r,
 621                         const char *sort_type, const char *sort_spec)
 622 {
 623     ZOOM_connection c = r->connection;
 624     ZOOM_task task;
 625
 626     if (!c)
 627         return;
 628
 629     if (c->host_port && c->proto == PROTO_HTTP)
 630     {
 631         if (!c->cs)
 632         {
 633             yaz_log(log_level, "NO COMSTACK");
 634             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 635         }
 636         else
 637         {
 638             yaz_log(log_level, "PREPARE FOR RECONNECT");
 639             c->reconnect_ok = 1;
 640         }
 641     }
 642
 643     ZOOM_resultset_cache_reset(r);
 644     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 645     task->u.sort.resultset = r;
 646     task->u.sort.q = ZOOM_query_create();
 647     ZOOM_query_sortby(task->u.sort.q, sort_spec);
 648
 649     ZOOM_resultset_addref (r);
 650
 651     if (!c->async)
 652     {
 653         while (ZOOM_event (1, &c))
 654             ;
 655     }
 656 }
 657
 658 ZOOM_API(void)
 659     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 660 {
 661     ZOOM_record_cache rc;
 662
 663     for (rc = r->record_cache; rc; rc = rc->next)
 664     {
 665         if (rc->rec.wrbuf_marc)
 666             wrbuf_free (rc->rec.wrbuf_marc, 1);
 667         if (rc->rec.wrbuf_iconv)
 668             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 669         if (rc->rec.wrbuf_opac)
 670             wrbuf_free (rc->rec.wrbuf_opac, 1);
 671     }
 672     r->record_cache = 0;
 673 }
 674
 675 ZOOM_API(void)
 676 ZOOM_resultset_destroy(ZOOM_resultset r)
 677 {
 678     if (!r)
 679         return;
 680     (r->refcount)--;
 681     yaz_log (log_level, "ZOOM_resultset_destroy r = %p count=%d",
 682              r, r->refcount);
 683     if (r->refcount == 0)
 684     {
 685         ZOOM_resultset_cache_reset(r);
 686
 687         if (r->connection)
 688         {
 689             /* remove ourselves from the resultsets in connection */
 690             ZOOM_resultset *rp = &r->connection->resultsets;
 691             while (1)
 692             {
 693                 assert (*rp);   /* we must be in this list!! */
 694                 if (*rp == r)
 695                 {   /* OK, we're here - take us out of it */
 696                     *rp = (*rp)->next;
 697                     break;
 698                 }
 699                 rp = &(*rp)->next;
 700             }
 701         }
 702         ZOOM_query_destroy (r->query);
 703         ZOOM_options_destroy (r->options);
 704         odr_destroy (r->odr);
 705         xfree (r->setname);
 706         xfree (r->schema);
 707         xfree (r);
 708     }
 709 }
 710
 711 ZOOM_API(size_t)
 712 ZOOM_resultset_size (ZOOM_resultset r)
 713 {
 714     return r->size;
 715 }
 716
 717 static void do_close (ZOOM_connection c)
 718 {
 719     if (c->cs)
 720         cs_close(c->cs);
 721     c->cs = 0;
 722     c->mask = 0;
 723     c->state = STATE_IDLE;
 724 }
 725
 726 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 727                                      int force_sync, int start, int count)
 728 {
 729     ZOOM_task task;
 730     ZOOM_connection c;
 731     const char *cp;
 732
 733     if (!r)
 734         return;
 735     c = r->connection;
 736     if (!c)
 737         return;
 738
 739     if (c->host_port && c->proto == PROTO_HTTP)
 740     {
 741         if (!c->cs)
 742         {
 743             yaz_log(log_level, "NO COMSTACK");
 744             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 745         }
 746         else
 747         {
 748             yaz_log(log_level, "PREPARE FOR RECONNECT");
 749             c->reconnect_ok = 1;
 750         }
 751     }
 752     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 753     task->u.retrieve.resultset = r;
 754     task->u.retrieve.start = start;
 755     task->u.retrieve.count = count;
 756
 757     cp = ZOOM_options_get (r->options, "schema");
 758     if (cp)
 759     {
 760         if (!r->schema || strcmp(r->schema, cp))
 761         {
 762             xfree(r->schema);
 763             r->schema = xstrdup(cp);
 764         }
 765     }
 766
 767     ZOOM_resultset_addref (r);
 768
 769     if (!r->connection->async || force_sync)
 770         while (r->connection && ZOOM_event (1, &r->connection))
 771             ;
 772 }
 773
 774 ZOOM_API(void)
 775 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 776                         size_t start, size_t count)
 777 {
 778     int force_present = 0;
 779
 780     if (!r)
 781         return ;
 782     if (count && recs)
 783         force_present = 1;
 784     ZOOM_resultset_retrieve (r, force_present, start, count);
 785     if (force_present)
 786     {
 787         size_t i;
 788         for (i = 0; i< count; i++)
 789             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 790     }
 791 }
 792
 793 static void get_cert(ZOOM_connection c)
 794 {
 795     char *cert_buf;
 796     int cert_len;
 797
 798     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 799     {
 800         ZOOM_connection_option_setl(c, "sslPeerCert",
 801                                     cert_buf, cert_len);
 802         xfree(cert_buf);
 803     }
 804 }
 805
 806 static zoom_ret do_connect (ZOOM_connection c)
 807 {
 808     void *add;
 809     const char *effective_host;
 810     if (!log_level_initialized)
 811     {
 812         log_level = yaz_log_module_level("zoom");
 813         log_level_initialized = 1;
 814     }
 815
 816
 817     if (c->proxy)
 818         effective_host = c->proxy;
 819     else
 820         effective_host = c->host_port;
 821
 822     yaz_log (log_level, "do_connect host=%s", effective_host);
 823
 824     if (c->cs)
 825         cs_close(c->cs);
 826     c->cs = cs_create_host (effective_host, 0, &add);
 827
 828     if (c->cs && c->cs->protocol == PROTO_HTTP)
 829     {
 830 #if HAVE_XML2
 831         const char *path = 0;
 832
 833         c->proto = PROTO_HTTP;
 834         cs_get_host_args(c->host_port, &path);
 835         xfree(c->path);
 836         c->path = (char*) xmalloc(strlen(path)+2);
 837         c->path[0] = '/';
 838         strcpy (c->path+1, path);
 839 #else
 840         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 841         do_close(c);
 842         return zoom_complete;
 843 #endif
 844     }
 845     if (c->cs)
 846     {
 847         int ret = cs_connect (c->cs, add);
 848         if (ret == 0)
 849         {
 850             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 851             ZOOM_connection_put_event(c, event);
 852             get_cert(c);
 853             if (c->proto == PROTO_Z3950)
 854                 ZOOM_connection_send_init(c);
 855             else
 856             {
 857                 /* no init request for SRW .. */
 858                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 859                 ZOOM_connection_remove_task (c);
 860                 c->mask = 0;
 861                 ZOOM_connection_exec_task (c);
 862             }
 863             c->state = STATE_ESTABLISHED;
 864             return zoom_pending;
 865         }
 866         else if (ret > 0)
 867         {
 868             c->state = STATE_CONNECTING;
 869             c->mask = ZOOM_SELECT_EXCEPT;
 870             if (c->cs->io_pending & CS_WANT_WRITE)
 871                 c->mask += ZOOM_SELECT_WRITE;
 872             if (c->cs->io_pending & CS_WANT_READ)
 873                 c->mask += ZOOM_SELECT_READ;
 874             return zoom_pending;
 875         }
 876     }
 877     c->state = STATE_IDLE;
 878     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
 879     return zoom_complete;
 880 }
 881
 882 int z3950_connection_socket(ZOOM_connection c)
 883 {
 884     if (c->cs)
 885         return cs_fileno(c->cs);
 886     return -1;
 887 }
 888
 889 int z3950_connection_mask(ZOOM_connection c)
 890 {
 891     if (c->cs)
 892         return c->mask;
 893     return 0;
 894 }
 895
 896 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 897 {
 898     int i;
 899     for (i = 0; i<200; i++)
 900     {
 901         size_t len;
 902         Z_OtherInformation **oi;
 903         char buf[80];
 904         const char *val;
 905         const char *cp;
 906         int oidval;
 907
 908         sprintf (buf, "otherInfo%d", i);
 909         val = ZOOM_options_get (c->options, buf);
 910         if (!val)
 911             break;
 912         cp = strchr(val, ':');
 913         if (!cp)
 914             continue;
 915         len = cp - val;
 916         if (len >= sizeof(buf))
 917             len = sizeof(buf)-1;
 918         memcpy (buf, val, len);
 919         buf[len] = '\0';
 920         oidval = oid_getvalbyname (buf);
 921         if (oidval == VAL_NONE)
 922             continue;
 923
 924         yaz_oi_APDU(a, &oi);
 925         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 926     }
 927 }
 928
 929 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 930 {
 931     assert (a);
 932     if (c->cookie_out)
 933     {
 934         Z_OtherInformation **oi;
 935         yaz_oi_APDU(a, &oi);
 936         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 937     }
 938     if (c->client_IP)
 939     {
 940         Z_OtherInformation **oi;
 941         yaz_oi_APDU(a, &oi);
 942         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 943     }
 944     otherInfo_attach (c, a, out);
 945     if (!z_APDU(out, &a, 0, 0))
 946     {
 947         FILE *outf = fopen("/tmp/apdu.txt", "a");
 948         if (a && outf)
 949         {
 950             ODR odr_pr = odr_createmem(ODR_PRINT);
 951             fprintf (outf, "a=%p\n", a);
 952             odr_setprint(odr_pr, outf);
 953             z_APDU(odr_pr, &a, 0, 0);
 954             odr_destroy(odr_pr);
 955         }
 956         yaz_log (log_level, "encoding failed");
 957         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
 958         odr_reset(out);
 959         return -1;
 960     }
 961
 962     return 0;
 963 }
 964
 965 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
 966 {
 967     ZOOM_Event event;
 968     assert (a);
 969     if (encode_APDU(c, a, c->odr_out))
 970         return zoom_complete;
 971     yaz_log(log_level, "send APDU type=%d", a->which);
 972     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
 973     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
 974     ZOOM_connection_put_event (c, event);
 975     odr_reset(c->odr_out);
 976     return do_write (c);
 977 }
 978
 979 /* returns 1 if PDU was sent OK (still pending )
 980            0 if PDU was not sent OK (nothing to wait for)
 981 */
 982
 983 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
 984 {
 985     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
 986     Z_InitRequest *ireq = apdu->u.initRequest;
 987     Z_IdAuthentication *auth = (Z_IdAuthentication *)
 988         odr_malloc(c->odr_out, sizeof(*auth));
 989     const char *auth_groupId = ZOOM_options_get (c->options, "group");
 990     const char *auth_userId = ZOOM_options_get (c->options, "user");
 991     const char *auth_password = ZOOM_options_get (c->options, "password");
 992     char *version;
 993
 994     /* support the pass for backwards compatibility */
 995     if (!auth_password)
 996         auth_password = ZOOM_options_get (c->options, "pass");
 997
 998     ODR_MASK_SET(ireq->options, Z_Options_search);
 999     ODR_MASK_SET(ireq->options, Z_Options_present);
1000     ODR_MASK_SET(ireq->options, Z_Options_scan);
1001     ODR_MASK_SET(ireq->options, Z_Options_sort);
1002     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1003     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1004
1005     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1006     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1007     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1008
1009     /* Index Data's Z39.50 Implementor Id is 81 */
1010     ireq->implementationId = odr_prepend(c->odr_out,
1011         ZOOM_options_get(c->options, "implementationId"),
1012         odr_prepend(c->odr_out, "81", ireq->implementationId));
1013
1014     ireq->implementationName = odr_prepend(c->odr_out,
1015         ZOOM_options_get(c->options, "implementationName"),
1016         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1017
1018     version = odr_strdup(c->odr_out, "$Revision: 1.42 $");
1019     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1020         version[strlen(version)-2] = '\0';
1021     ireq->implementationVersion = odr_prepend(c->odr_out,
1022         ZOOM_options_get(c->options, "implementationVersion"),
1023         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1024
1025     *ireq->maximumRecordSize =
1026         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1027     *ireq->preferredMessageSize =
1028         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1029
1030     if (auth_groupId || auth_password)
1031     {
1032         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1033         int i = 0;
1034         pass->groupId = 0;
1035         if (auth_groupId && *auth_groupId)
1036         {
1037             pass->groupId = (char *)
1038                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1039             strcpy(pass->groupId, auth_groupId);
1040             i++;
1041         }
1042         pass->userId = 0;
1043         if (auth_userId && *auth_userId)
1044         {
1045             pass->userId = (char *)
1046                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1047             strcpy(pass->userId, auth_userId);
1048             i++;
1049         }
1050         pass->password = 0;
1051         if (auth_password && *auth_password)
1052         {
1053             pass->password = (char *)
1054                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1055             strcpy(pass->password, auth_password);
1056             i++;
1057         }
1058         if (i)
1059         {
1060             auth->which = Z_IdAuthentication_idPass;
1061             auth->u.idPass = pass;
1062             ireq->idAuthentication = auth;
1063         }
1064     }
1065     else if (auth_userId)
1066     {
1067         auth->which = Z_IdAuthentication_open;
1068         auth->u.open = (char *)
1069             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1070         strcpy(auth->u.open, auth_userId);
1071         ireq->idAuthentication = auth;
1072     }
1073     if (c->proxy)
1074         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1075                                  VAL_PROXY, 1, c->host_port);
1076     if (c->charset || c->lang)
1077     {
1078         Z_OtherInformation **oi;
1079         Z_OtherInformationUnit *oi_unit;
1080
1081         yaz_oi_APDU(apdu, &oi);
1082
1083         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1084         {
1085             char **charsets_addresses = 0;
1086             char **langs_addresses = 0;
1087             int charsets_count = 0;
1088             int langs_count = 0;
1089
1090             if (c->charset)
1091                 nmem_strsplit_blank(c->odr_out->mem, c->charset,
1092                                     &charsets_addresses, &charsets_count);
1093             if (c->lang)
1094                 nmem_strsplit_blank(c->odr_out->mem, c->lang,
1095                                     &langs_addresses, &langs_count);
1096             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1097             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1098             oi_unit->information.externallyDefinedInfo =
1099                 yaz_set_proposal_charneg(c->odr_out,
1100                                          (const char **) charsets_addresses,
1101                                          charsets_count,
1102                                          (const char **) langs_addresses,
1103                                          langs_count,
1104                                          1);
1105         }
1106     }
1107     assert (apdu);
1108     return send_APDU (c, apdu);
1109 }
1110
1111 #if HAVE_XML2
1112 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1113 {
1114     char ctype[50];
1115     Z_SOAP_Handler h[2] = {
1116         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1117         {0, 0, 0}
1118     };
1119     ODR o = odr_createmem(ODR_ENCODE);
1120     int ret;
1121     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1122     Z_GDU *gdu;
1123     ZOOM_Event event;
1124
1125     gdu = z_get_HTTP_Request(c->odr_out);
1126     gdu->u.HTTP_Request->path = c->path;
1127
1128     if (c->host_port)
1129     {
1130         const char *cp0 = strstr(c->host_port, "://");
1131         const char *cp1 = 0;
1132         if (cp0)
1133             cp0 = cp0+3;
1134         else
1135             cp0 = c->host_port;
1136
1137         cp1 = strchr(cp0, '/');
1138         if (!cp1)
1139             cp1 = cp0+strlen(cp0);
1140
1141         if (cp0 && cp1)
1142         {
1143             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1144             memcpy (h, cp0, cp1 - cp0);
1145             h[cp1-cp0] = '\0';
1146             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1147                               "Host", h);
1148         }
1149     }
1150
1151     strcpy(ctype, "text/xml");
1152     if (c->charset && strlen(c->charset) < 20)
1153     {
1154         strcat(ctype, "; charset=");
1155         strcat(ctype, c->charset);
1156     }
1157     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1158                       "Content-Type", ctype);
1159     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1160                       "SOAPAction", "\"\"");
1161     p->which = Z_SOAP_generic;
1162     p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1163     p->u.generic->no = 0;
1164     p->u.generic->ns = 0;
1165     p->u.generic->p = sr;
1166     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1167
1168     ret = z_soap_codec_enc(o, &p,
1169                            &gdu->u.HTTP_Request->content_buf,
1170                            &gdu->u.HTTP_Request->content_len, h,
1171                            c->charset);
1172
1173     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1174         return zoom_complete;
1175     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1176
1177     odr_destroy(o);
1178
1179     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1180     ZOOM_connection_put_event (c, event);
1181     odr_reset(c->odr_out);
1182     return do_write (c);
1183 }
1184 #endif
1185
1186 #if HAVE_XML2
1187 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1188 {
1189     int i;
1190     ZOOM_resultset resultset = 0;
1191     Z_SRW_PDU *sr = 0;
1192     const char *recordPacking = 0;
1193
1194     if (c->error)                  /* don't continue on error */
1195         return zoom_complete;
1196     assert (c->tasks);
1197     if (c->tasks->which == ZOOM_TASK_SEARCH)
1198     {
1199         resultset = c->tasks->u.search.resultset;
1200         resultset->setname = xstrdup ("default");
1201         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1202     }
1203     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1204     {
1205         resultset = c->tasks->u.retrieve.resultset;
1206
1207         resultset->start = c->tasks->u.retrieve.start;
1208         resultset->count = c->tasks->u.retrieve.count;
1209
1210         if (resultset->start >= resultset->size)
1211             return zoom_complete;
1212         if (resultset->start + resultset->count > resultset->size)
1213             resultset->count = resultset->size - resultset->start;
1214
1215         for (i = 0; i<resultset->count; i++)
1216         {
1217             ZOOM_record rec =
1218                 record_cache_lookup (resultset, i + resultset->start);
1219             if (!rec)
1220                 break;
1221         }
1222         if (i == resultset->count)
1223             return zoom_complete;
1224     }
1225     assert(resultset->query);
1226
1227     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1228
1229     if (resultset->query->z_query->which == Z_Query_type_104
1230         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1231     {
1232
1233         sr->u.request->query_type = Z_SRW_query_type_cql;
1234         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1235     }
1236     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1237              resultset->query->z_query->u.type_1)
1238     {
1239         sr->u.request->query_type = Z_SRW_query_type_pqf;
1240         sr->u.request->query.pqf = resultset->query->query_string;
1241     }
1242     else
1243     {
1244         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1245         return zoom_complete;
1246     }
1247     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1248     sr->u.request->maximumRecords = odr_intdup (
1249         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1250     sr->u.request->recordSchema = resultset->schema;
1251
1252     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1253
1254     if (recordPacking)
1255         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1256
1257     return send_srw(c, sr);
1258 }
1259 #else
1260 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1261 {
1262     return zoom_complete;
1263 }
1264 #endif
1265
1266 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1267 {
1268     ZOOM_resultset r;
1269     int lslb, ssub, mspn;
1270     const char *syntax;
1271     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1272     Z_SearchRequest *search_req = apdu->u.searchRequest;
1273     const char *elementSetName;
1274     const char *smallSetElementSetName;
1275     const char *mediumSetElementSetName;
1276
1277     assert (c->tasks);
1278     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1279
1280     r = c->tasks->u.search.resultset;
1281
1282     elementSetName =
1283         ZOOM_options_get (r->options, "elementSetName");
1284     smallSetElementSetName  =
1285         ZOOM_options_get (r->options, "smallSetElementSetName");
1286     mediumSetElementSetName =
1287         ZOOM_options_get (r->options, "mediumSetElementSetName");
1288
1289     if (!smallSetElementSetName)
1290         smallSetElementSetName = elementSetName;
1291
1292     if (!mediumSetElementSetName)
1293         mediumSetElementSetName = elementSetName;
1294
1295     assert (r);
1296     assert (r->query);
1297
1298     /* prepare query for the search request */
1299     search_req->query = r->query->z_query;
1300     if (!search_req->query)
1301     {
1302         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1303         return zoom_complete;
1304     }
1305
1306     search_req->databaseNames =
1307         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1308
1309     /* get syntax (no need to provide unless piggyback is in effect) */
1310     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1311
1312     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1313     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1314     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1315     if (lslb != -1 && ssub != -1 && mspn != -1)
1316     {
1317         /* So're a Z39.50 expert? Let's hope you don't do sort */
1318         *search_req->largeSetLowerBound = lslb;
1319         *search_req->smallSetUpperBound = ssub;
1320         *search_req->mediumSetPresentNumber = mspn;
1321     }
1322     else if (r->start == 0 && r->count > 0
1323              && r->piggyback && !r->r_sort_spec && !r->schema)
1324     {
1325         /* Regular piggyback - do it unless we're going to do sort */
1326         *search_req->largeSetLowerBound = 2000000000;
1327         *search_req->smallSetUpperBound = 1;
1328         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1329     }
1330     else
1331     {
1332         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1333         smallSetElementSetName = 0;
1334         mediumSetElementSetName = 0;
1335         syntax = 0;
1336     }
1337     if (smallSetElementSetName && *smallSetElementSetName)
1338     {
1339         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1340             odr_malloc (c->odr_out, sizeof(*esn));
1341
1342         esn->which = Z_ElementSetNames_generic;
1343         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1344         search_req->smallSetElementSetNames = esn;
1345     }
1346     if (mediumSetElementSetName && *mediumSetElementSetName)
1347     {
1348         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1349             odr_malloc (c->odr_out, sizeof(*esn));
1350
1351         esn->which = Z_ElementSetNames_generic;
1352         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1353         search_req->mediumSetElementSetNames = esn;
1354     }
1355     if (syntax)
1356         search_req->preferredRecordSyntax =
1357             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1358
1359     if (!r->setname)
1360     {
1361         if (c->support_named_resultsets)
1362         {
1363             char setname[14];
1364             int ord;
1365             /* find the lowest unused ordinal so that we re-use
1366                result sets on the server. */
1367             for (ord = 1; ; ord++)
1368             {
1369                 ZOOM_resultset rp;
1370                 sprintf (setname, "%d", ord);
1371                 for (rp = c->resultsets; rp; rp = rp->next)
1372                     if (rp->setname && !strcmp (rp->setname, setname))
1373                         break;
1374                 if (!rp)
1375                     break;
1376             }
1377             r->setname = xstrdup (setname);
1378             yaz_log (log_level, "allocating set %s", r->setname);
1379         }
1380         else
1381             r->setname = xstrdup ("default");
1382         ZOOM_options_set (r->options, "setname", r->setname);
1383     }
1384     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1385     /* send search request */
1386     return send_APDU (c, apdu);
1387 }
1388
1389 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1390 {
1391     int oclass;
1392     char *addinfo = 0;
1393
1394     switch (r->which)
1395     {
1396     case Z_DefaultDiagFormat_v2Addinfo:
1397         addinfo = r->u.v2Addinfo;
1398         break;
1399     case Z_DefaultDiagFormat_v3Addinfo:
1400         addinfo = r->u.v3Addinfo;
1401         break;
1402     }
1403     xfree (c->addinfo);
1404     c->addinfo = 0;
1405     set_dset_error(c, *r->condition,
1406                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1407                    addinfo, 0);
1408 }
1409
1410 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1411 {
1412     if (p->which != Z_DiagRec_defaultFormat)
1413         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1414     else
1415         response_default_diag(c, p->u.defaultFormat);
1416 }
1417
1418 ZOOM_API(ZOOM_record)
1419 ZOOM_record_clone (ZOOM_record srec)
1420 {
1421     char *buf;
1422     int size;
1423     ODR odr_enc;
1424     ZOOM_record nrec;
1425
1426     odr_enc = odr_createmem(ODR_ENCODE);
1427     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1428         return 0;
1429     buf = odr_getbuf (odr_enc, &size, 0);
1430
1431     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1432     nrec->odr = odr_createmem(ODR_DECODE);
1433     nrec->wrbuf_marc = 0;
1434     nrec->wrbuf_iconv = 0;
1435     nrec->wrbuf_opac = 0;
1436     odr_setbuf (nrec->odr, buf, size, 0);
1437     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1438
1439     odr_destroy (odr_enc);
1440     return nrec;
1441 }
1442
1443 ZOOM_API(ZOOM_record)
1444 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1445 {
1446     return record_cache_lookup (s, pos);
1447 }
1448
1449 ZOOM_API(ZOOM_record)
1450 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1451 {
1452     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1453
1454     if (!rec)
1455     {
1456         ZOOM_resultset_retrieve (r, 1, pos, 1);
1457         rec = ZOOM_resultset_record_immediate (r, pos);
1458     }
1459     return rec;
1460 }
1461
1462 ZOOM_API(void)
1463 ZOOM_record_destroy (ZOOM_record rec)
1464 {
1465     if (!rec)
1466         return;
1467     if (rec->wrbuf_marc)
1468         wrbuf_free (rec->wrbuf_marc, 1);
1469     if (rec->wrbuf_iconv)
1470         wrbuf_free (rec->wrbuf_iconv, 1);
1471     if (rec->wrbuf_opac)
1472         wrbuf_free (rec->wrbuf_opac, 1);
1473     odr_destroy (rec->odr);
1474     xfree (rec);
1475 }
1476
1477 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1478                                      int *len,
1479                                      const char *buf, int sz,
1480                                      const char *record_charset)
1481 {
1482     char to[40];
1483     char from[40];
1484     yaz_iconv_t cd = 0;
1485     yaz_marc_t mt = yaz_marc_create();
1486
1487     *from = '\0';
1488     strcpy(to, "UTF-8");
1489     if (record_charset && *record_charset)
1490     {
1491         /* Use "from,to" or just "from" */
1492         const char *cp = strchr(record_charset, ',');
1493         int clen = strlen(record_charset);
1494         if (cp && cp[1])
1495         {
1496             strncpy( to, cp+1, sizeof(to)-1);
1497             to[sizeof(to)-1] = '\0';
1498             clen = cp - record_charset;
1499         }
1500         if (clen > sizeof(from)-1)
1501             clen = sizeof(from)-1;
1502
1503         if (clen)
1504             strncpy(from, record_charset, clen);
1505         from[clen] = '\0';
1506     }
1507
1508     if (*from && *to)
1509     {
1510         cd = yaz_iconv_open(to, from);
1511         yaz_marc_iconv(mt, cd);
1512     }
1513
1514     yaz_marc_xml(mt, marc_type);
1515     if (!rec->wrbuf_marc)
1516         rec->wrbuf_marc = wrbuf_alloc();
1517     wrbuf_rewind (rec->wrbuf_marc);
1518     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1519     {
1520         yaz_marc_destroy(mt);
1521         if (cd)
1522             yaz_iconv_close(cd);
1523         if (len)
1524             *len = wrbuf_len(rec->wrbuf_marc);
1525         return wrbuf_buf(rec->wrbuf_marc);
1526     }
1527     yaz_marc_destroy(mt);
1528     if (cd)
1529         yaz_iconv_close(cd);
1530     return 0;
1531 }
1532
1533 static const char *record_iconv_return(ZOOM_record rec, int *len,
1534                                        const char *buf, int sz,
1535                                        const char *record_charset)
1536 {
1537     char to[40];
1538     char from[40];
1539     yaz_iconv_t cd = 0;
1540
1541     *from = '\0';
1542     strcpy(to, "UTF-8");
1543     if (record_charset && *record_charset)
1544     {
1545         /* Use "from,to" or just "from" */
1546         const char *cp = strchr(record_charset, ',');
1547         int clen = strlen(record_charset);
1548         if (cp && cp[1])
1549         {
1550             strncpy( to, cp+1, sizeof(to)-1);
1551             to[sizeof(to)-1] = '\0';
1552             clen = cp - record_charset;
1553         }
1554         if (clen > sizeof(from)-1)
1555             clen = sizeof(from)-1;
1556
1557         if (clen)
1558             strncpy(from, record_charset, clen);
1559         from[clen] = '\0';
1560     }
1561
1562     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1563     {
1564         char outbuf[12];
1565         size_t inbytesleft = sz;
1566         const char *inp = buf;
1567
1568         if (!rec->wrbuf_iconv)
1569             rec->wrbuf_iconv = wrbuf_alloc();
1570
1571         wrbuf_rewind(rec->wrbuf_iconv);
1572
1573         while (inbytesleft)
1574         {
1575             size_t outbytesleft = sizeof(outbuf);
1576             char *outp = outbuf;
1577             size_t r = yaz_iconv (cd, (char**) &inp,
1578                                   &inbytesleft,
1579                                   &outp, &outbytesleft);
1580             if (r == (size_t) (-1))
1581             {
1582                 int e = yaz_iconv_error(cd);
1583                 if (e != YAZ_ICONV_E2BIG)
1584                     break;
1585             }
1586             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1587         }
1588         wrbuf_puts(rec->wrbuf_iconv, "");
1589         buf = wrbuf_buf(rec->wrbuf_iconv);
1590         sz = wrbuf_len(rec->wrbuf_iconv);
1591         yaz_iconv_close(cd);
1592     }
1593     if (len)
1594         *len = sz;
1595     return buf;
1596 }
1597
1598 ZOOM_API(const char *)
1599 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1600 {
1601     char type[40];
1602     char charset[40];
1603     char xpath[512];
1604     const char *cp;
1605     int i;
1606     Z_NamePlusRecord *npr;
1607
1608     if (len)
1609         *len = 0; /* default return */
1610
1611     if (!rec)
1612         return 0;
1613     npr = rec->npr;
1614     if (!npr)
1615         return 0;
1616
1617     cp = type_spec;
1618     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1619     {
1620         if (cp[i] == ';' || cp[i] == ' ')
1621             break;
1622         type[i] = cp[i];
1623     }
1624     type[i] = '\0';
1625     charset[0] = '\0';
1626     while (type_spec[i] == ';')
1627     {
1628         i++;
1629         while (type_spec[i] == ' ')
1630             i++;
1631         if (!strncmp(type_spec+i, "charset=", 8))
1632         {
1633             int j = 0;
1634             i = i + 8; /* skip charset= */
1635             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1636             {
1637                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1638                     break;
1639                 charset[j] = cp[i];
1640             }
1641             charset[j] = '\0';
1642         }
1643         else if (!strncmp(type_spec+i, "xpath=", 6))
1644         {
1645             int j = 0;
1646             i = i + 6;
1647             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1648                 xpath[j] = cp[i];
1649             xpath[j] = '\0';
1650         }
1651         while (type_spec[i] == ' ')
1652             i++;
1653     }
1654     if (!strcmp (type, "database"))
1655     {
1656         if (len)
1657             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1658         return npr->databaseName;
1659     }
1660     else if (!strcmp (type, "syntax"))
1661     {
1662         const char *desc = 0;
1663         if (npr->which == Z_NamePlusRecord_databaseRecord)
1664         {
1665             Z_External *r = (Z_External *) npr->u.databaseRecord;
1666             oident *ent = oid_getentbyoid(r->direct_reference);
1667             if (ent)
1668                 desc = ent->desc;
1669         }
1670         if (!desc)
1671             desc = "none";
1672         if (len)
1673             *len = strlen(desc);
1674         return desc;
1675     }
1676     if (npr->which != Z_NamePlusRecord_databaseRecord)
1677         return 0;
1678
1679     /* from now on - we have a database record .. */
1680     if (!strcmp (type, "render"))
1681     {
1682         Z_External *r = (Z_External *) npr->u.databaseRecord;
1683         oident *ent = oid_getentbyoid(r->direct_reference);
1684
1685         /* render bibliographic record .. */
1686         if (r->which == Z_External_OPAC)
1687         {
1688             r = r->u.opac->bibliographicRecord;
1689             if (!r)
1690                 return 0;
1691             ent = oid_getentbyoid(r->direct_reference);
1692         }
1693         if (r->which == Z_External_sutrs)
1694             return record_iconv_return(rec, len,
1695                                        (char*) r->u.sutrs->buf,
1696                                        r->u.sutrs->len,
1697                                        charset);
1698         else if (r->which == Z_External_octet)
1699         {
1700             const char *ret_buf;
1701             switch (ent->value)
1702             {
1703             case VAL_SOIF:
1704             case VAL_HTML:
1705             case VAL_SUTRS:
1706                 break;
1707             case VAL_TEXT_XML:
1708             case VAL_APPLICATION_XML:
1709                 break;
1710             default:
1711                 ret_buf = marc_iconv_return(
1712                     rec, YAZ_MARC_LINE, len,
1713                     (const char *) r->u.octet_aligned->buf,
1714                     r->u.octet_aligned->len,
1715                     charset);
1716                 if (ret_buf)
1717                     return ret_buf;
1718             }
1719             return record_iconv_return(rec, len,
1720                                        (const char *) r->u.octet_aligned->buf,
1721                                        r->u.octet_aligned->len,
1722                                        charset);
1723         }
1724         else if (r->which == Z_External_grs1)
1725         {
1726             if (!rec->wrbuf_marc)
1727                 rec->wrbuf_marc = wrbuf_alloc();
1728             wrbuf_rewind (rec->wrbuf_marc);
1729             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1730             return record_iconv_return(rec, len,
1731                                        wrbuf_buf(rec->wrbuf_marc),
1732                                        wrbuf_len(rec->wrbuf_marc),
1733                                        charset);
1734         }
1735         return 0;
1736     }
1737     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1738     {
1739         Z_External *r = (Z_External *) npr->u.databaseRecord;
1740         oident *ent = oid_getentbyoid(r->direct_reference);
1741
1742         /* render bibliographic record .. */
1743         if (r->which == Z_External_OPAC)
1744         {
1745             r = r->u.opac->bibliographicRecord;
1746             if (!r)
1747                 return 0;
1748             ent = oid_getentbyoid(r->direct_reference);
1749         }
1750
1751         if (r->which == Z_External_sutrs)
1752             return record_iconv_return(rec, len,
1753                                        (const char *) r->u.sutrs->buf,
1754                                        r->u.sutrs->len,
1755                                        charset);
1756         else if (r->which == Z_External_octet)
1757         {
1758             const char *ret_buf;
1759             int marc_decode_type = YAZ_MARC_MARCXML;
1760
1761             if (!strcmp(type, "oai"))
1762                 marc_decode_type = YAZ_MARC_OAIMARC;
1763             switch (ent->value)
1764             {
1765             case VAL_SOIF:
1766             case VAL_HTML:
1767             case VAL_SUTRS:
1768                 break;
1769             case VAL_TEXT_XML:
1770             case VAL_APPLICATION_XML:
1771                 break;
1772             default:
1773                 ret_buf = marc_iconv_return(
1774                     rec, marc_decode_type, len,
1775                     (const char *) r->u.octet_aligned->buf,
1776                     r->u.octet_aligned->len,
1777                     charset);
1778                 if (ret_buf)
1779                     return ret_buf;
1780             }
1781             return record_iconv_return(rec, len,
1782                                        (const char *) r->u.octet_aligned->buf,
1783                                        r->u.octet_aligned->len,
1784                                        charset);
1785         }
1786         else if (r->which == Z_External_grs1)
1787         {
1788             if (len) *len = 5;
1789             return "GRS-1";
1790         }
1791         return 0;
1792     }
1793     else if (!strcmp (type, "raw"))
1794     {
1795         Z_External *r = (Z_External *) npr->u.databaseRecord;
1796
1797         if (r->which == Z_External_sutrs)
1798         {
1799             if (len) *len = r->u.sutrs->len;
1800             return (const char *) r->u.sutrs->buf;
1801         }
1802         else if (r->which == Z_External_octet)
1803         {
1804             if (len) *len = r->u.octet_aligned->len;
1805             return (const char *) r->u.octet_aligned->buf;
1806         }
1807         else /* grs-1, explain, OPAC, ... */
1808         {
1809             if (len) *len = -1;
1810             return (const char *) npr->u.databaseRecord;
1811         }
1812         return 0;
1813     }
1814     else if (!strcmp (type, "ext"))
1815     {
1816         if (len) *len = -1;
1817         return (const char *) npr->u.databaseRecord;
1818     }
1819     else if (!strcmp (type, "opac"))
1820
1821     {
1822         Z_External *r = (Z_External *) npr->u.databaseRecord;
1823         if (r->which == Z_External_OPAC)
1824         {
1825             if (!rec->wrbuf_opac)
1826                 rec->wrbuf_opac = wrbuf_alloc();
1827             wrbuf_rewind (rec->wrbuf_opac);
1828             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1829             return record_iconv_return(rec, len,
1830                                        wrbuf_buf(rec->wrbuf_opac),
1831                                        wrbuf_len(rec->wrbuf_opac),
1832                                        charset);
1833         }
1834     }
1835     return 0;
1836 }
1837
1838 static int strcmp_null(const char *v1, const char *v2)
1839 {
1840     if (!v1 && !v2)
1841         return 0;
1842     if (!v1 || !v2)
1843         return -1;
1844     return strcmp(v1, v2);
1845 }
1846
1847 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1848                               int pos)
1849 {
1850     ZOOM_record_cache rc;
1851     const char *elementSetName =
1852         ZOOM_resultset_option_get (r, "elementSetName");
1853     const char *syntax =
1854         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1855
1856     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1857     ZOOM_connection_put_event(r->connection, event);
1858
1859     for (rc = r->record_cache; rc; rc = rc->next)
1860     {
1861         if (pos == rc->pos)
1862         {
1863             if (strcmp_null(r->schema, rc->schema))
1864                 continue;
1865             if (strcmp_null(elementSetName,rc->elementSetName))
1866                 continue;
1867             if (strcmp_null(syntax, rc->syntax))
1868                 continue;
1869             /* not destroying rc->npr (it's handled by nmem )*/
1870             rc->rec.npr = npr;
1871             /* keeping wrbuf_marc too */
1872             return;
1873         }
1874     }
1875     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1876     rc->rec.npr = npr;
1877     rc->rec.odr = 0;
1878     rc->rec.wrbuf_marc = 0;
1879     rc->rec.wrbuf_iconv = 0;
1880     rc->rec.wrbuf_opac = 0;
1881     if (elementSetName)
1882         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1883     else
1884         rc->elementSetName = 0;
1885
1886     if (syntax)
1887         rc->syntax = odr_strdup (r->odr, syntax);
1888     else
1889         rc->syntax = 0;
1890
1891     if (r->schema)
1892         rc->schema = odr_strdup (r->odr, r->schema);
1893     else
1894         rc->schema = 0;
1895
1896     rc->pos = pos;
1897     rc->next = r->record_cache;
1898     r->record_cache = rc;
1899 }
1900
1901 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1902 {
1903     ZOOM_record_cache rc;
1904     const char *elementSetName =
1905         ZOOM_resultset_option_get (r, "elementSetName");
1906     const char *syntax =
1907         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1908
1909     for (rc = r->record_cache; rc; rc = rc->next)
1910     {
1911         if (pos == rc->pos)
1912         {
1913             if (strcmp_null(r->schema, rc->schema))
1914                 continue;
1915             if (strcmp_null(elementSetName,rc->elementSetName))
1916                 continue;
1917             if (strcmp_null(syntax, rc->syntax))
1918                 continue;
1919             return &rc->rec;
1920         }
1921     }
1922     return 0;
1923 }
1924
1925 static void handle_records (ZOOM_connection c, Z_Records *sr,
1926                             int present_phase)
1927 {
1928     ZOOM_resultset resultset;
1929
1930     if (!c->tasks)
1931         return ;
1932     switch (c->tasks->which)
1933     {
1934     case ZOOM_TASK_SEARCH:
1935         resultset = c->tasks->u.search.resultset;
1936         break;
1937     case ZOOM_TASK_RETRIEVE:
1938         resultset = c->tasks->u.retrieve.resultset;
1939         break;
1940     default:
1941         return;
1942     }
1943     if (sr && sr->which == Z_Records_NSD)
1944         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
1945     else if (sr && sr->which == Z_Records_multipleNSD)
1946     {
1947         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1948             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1949         else
1950             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1951     }
1952     else
1953     {
1954         if (resultset->count + resultset->start > resultset->size)
1955             resultset->count = resultset->size - resultset->start;
1956         if (resultset->count < 0)
1957             resultset->count = 0;
1958         if (sr && sr->which == Z_Records_DBOSD)
1959         {
1960             int i;
1961             NMEM nmem = odr_extract_mem (c->odr_in);
1962             Z_NamePlusRecordList *p =
1963                 sr->u.databaseOrSurDiagnostics;
1964             for (i = 0; i<p->num_records; i++)
1965             {
1966                 record_cache_add (resultset, p->records[i],
1967                                   i+ resultset->start);
1968             }
1969             /* transfer our response to search_nmem .. we need it later */
1970             nmem_transfer (resultset->odr->mem, nmem);
1971             nmem_destroy (nmem);
1972             if (present_phase && p->num_records == 0)
1973             {
1974                 /* present response and we didn't get any records! */
1975                 Z_NamePlusRecord *myrec =
1976                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
1977                 record_cache_add(resultset, myrec, resultset->start);
1978             }
1979         }
1980         else if (present_phase)
1981         {
1982             /* present response and we didn't get any records! */
1983             Z_NamePlusRecord *myrec =
1984                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
1985             record_cache_add(resultset, myrec, resultset->start);
1986         }
1987     }
1988 }
1989
1990 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1991 {
1992     handle_records (c, pr->records, 1);
1993 }
1994
1995 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1996 {
1997     ZOOM_resultset resultset;
1998     ZOOM_Event event;
1999
2000     yaz_log (log_level, "got search response");
2001
2002     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2003         return ;
2004
2005     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2006     ZOOM_connection_put_event(c, event);
2007
2008     resultset = c->tasks->u.search.resultset;
2009
2010     resultset->size = *sr->resultCount;
2011     handle_records (c, sr->records, 0);
2012 }
2013
2014 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2015 {
2016     if (res->diagnostics && res->num_diagnostics > 0)
2017         response_diag (c, res->diagnostics[0]);
2018 }
2019
2020 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2021 {
2022     NMEM nmem = odr_extract_mem (c->odr_in);
2023     ZOOM_scanset scan;
2024
2025     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2026         return 0;
2027     scan = c->tasks->u.scan.scan;
2028
2029     if (res->entries && res->entries->nonsurrogateDiagnostics)
2030         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2031     scan->scan_response = res;
2032     nmem_transfer (scan->odr->mem, nmem);
2033     if (res->stepSize)
2034         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2035     if (res->positionOfTerm)
2036         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2037     if (res->scanStatus)
2038         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2039     if (res->numberOfEntriesReturned)
2040         ZOOM_options_set_int (scan->options, "number",
2041                               *res->numberOfEntriesReturned);
2042     nmem_destroy (nmem);
2043     return 1;
2044 }
2045
2046 static zoom_ret send_sort (ZOOM_connection c,
2047                            ZOOM_resultset resultset)
2048 {
2049     if (c->error)
2050         resultset->r_sort_spec = 0;
2051     if (resultset->r_sort_spec)
2052     {
2053         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2054         Z_SortRequest *req = apdu->u.sortRequest;
2055
2056         req->num_inputResultSetNames = 1;
2057         req->inputResultSetNames = (Z_InternationalString **)
2058             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2059         req->inputResultSetNames[0] =
2060             odr_strdup (c->odr_out, resultset->setname);
2061         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2062         req->sortSequence = resultset->r_sort_spec;
2063         resultset->r_sort_spec = 0;
2064         return send_APDU (c, apdu);
2065     }
2066     return zoom_complete;
2067 }
2068
2069 static zoom_ret send_present (ZOOM_connection c)
2070 {
2071     Z_APDU *apdu = 0;
2072     Z_PresentRequest *req = 0;
2073     int i = 0;
2074     const char *syntax = 0;
2075     const char *elementSetName = 0;
2076     ZOOM_resultset  resultset;
2077
2078     if (!c->tasks)
2079         return zoom_complete;
2080
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         resultset->start = c->tasks->u.retrieve.start;
2089         resultset->count = c->tasks->u.retrieve.count;
2090
2091         if (resultset->start >= resultset->size)
2092             return zoom_complete;
2093         if (resultset->start + resultset->count > resultset->size)
2094             resultset->count = resultset->size - resultset->start;
2095         break;
2096     default:
2097         return zoom_complete;
2098     }
2099
2100     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2101     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2102
2103     if (c->error)                  /* don't continue on error */
2104         return zoom_complete;
2105     if (resultset->start < 0)
2106         return zoom_complete;
2107     for (i = 0; i<resultset->count; i++)
2108     {
2109         ZOOM_record rec =
2110             record_cache_lookup (resultset, i + resultset->start);
2111         if (!rec)
2112             break;
2113     }
2114     if (i == resultset->count)
2115         return zoom_complete;
2116
2117     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2118     req = apdu->u.presentRequest;
2119
2120     resultset->start += i;
2121     resultset->count -= i;
2122     *req->resultSetStartPoint = resultset->start + 1;
2123     *req->numberOfRecordsRequested = resultset->step>0 ?
2124         resultset->step : resultset->count;
2125     assert (*req->numberOfRecordsRequested > 0);
2126
2127     if (syntax && *syntax)
2128         req->preferredRecordSyntax =
2129             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2130
2131     if (resultset->schema && *resultset->schema)
2132     {
2133         Z_RecordComposition *compo = (Z_RecordComposition *)
2134             odr_malloc (c->odr_out, sizeof(*compo));
2135
2136         req->recordComposition = compo;
2137         compo->which = Z_RecordComp_complex;
2138         compo->u.complex = (Z_CompSpec *)
2139             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2140         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2141             odr_malloc(c->odr_out, sizeof(bool_t));
2142         *compo->u.complex->selectAlternativeSyntax = 0;
2143
2144         compo->u.complex->generic = (Z_Specification *)
2145             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2146
2147         compo->u.complex->generic->which = Z_Schema_oid;
2148         compo->u.complex->generic->schema.oid = (Odr_oid *)
2149             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2150
2151         if (!compo->u.complex->generic->schema.oid)
2152         {
2153             /* OID wasn't a schema! Try record syntax instead. */
2154
2155             compo->u.complex->generic->schema.oid = (Odr_oid *)
2156                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2157         }
2158         if (elementSetName && *elementSetName)
2159         {
2160             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2161                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2162             compo->u.complex->generic->elementSpec->which =
2163                 Z_ElementSpec_elementSetName;
2164             compo->u.complex->generic->elementSpec->u.elementSetName =
2165                 odr_strdup (c->odr_out, elementSetName);
2166         }
2167         else
2168             compo->u.complex->generic->elementSpec = 0;
2169         compo->u.complex->num_dbSpecific = 0;
2170         compo->u.complex->dbSpecific = 0;
2171         compo->u.complex->num_recordSyntax = 0;
2172         compo->u.complex->recordSyntax = 0;
2173     }
2174     else if (elementSetName && *elementSetName)
2175     {
2176         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2177             odr_malloc (c->odr_out, sizeof(*esn));
2178         Z_RecordComposition *compo = (Z_RecordComposition *)
2179             odr_malloc (c->odr_out, sizeof(*compo));
2180
2181         esn->which = Z_ElementSetNames_generic;
2182         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2183         compo->which = Z_RecordComp_simple;
2184         compo->u.simple = esn;
2185         req->recordComposition = compo;
2186     }
2187     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2188     return send_APDU (c, apdu);
2189 }
2190
2191 ZOOM_API(ZOOM_scanset)
2192 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2193 {
2194     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2195
2196     scan->connection = c;
2197     scan->odr = odr_createmem (ODR_DECODE);
2198     scan->options = ZOOM_options_create_with_parent (c->options);
2199     scan->refcount = 1;
2200     scan->scan_response = 0;
2201
2202     if ((scan->termListAndStartPoint =
2203          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2204                       start)))
2205     {
2206         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2207         task->u.scan.scan = scan;
2208
2209         (scan->refcount)++;
2210         if (!c->async)
2211         {
2212             while (ZOOM_event (1, &c))
2213                 ;
2214         }
2215     }
2216     return scan;
2217 }
2218
2219 ZOOM_API(void)
2220 ZOOM_scanset_destroy (ZOOM_scanset scan)
2221 {
2222     if (!scan)
2223         return;
2224     (scan->refcount)--;
2225     if (scan->refcount == 0)
2226     {
2227         odr_destroy (scan->odr);
2228
2229         ZOOM_options_destroy (scan->options);
2230         xfree (scan);
2231     }
2232 }
2233
2234 static zoom_ret send_package (ZOOM_connection c)
2235 {
2236     ZOOM_Event event;
2237     if (!c->tasks)
2238         return zoom_complete;
2239     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2240
2241     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2242     ZOOM_connection_put_event (c, event);
2243
2244     return do_write_ex (c, c->tasks->u.package->buf_out,
2245                         c->tasks->u.package->len_out);
2246 }
2247
2248 static zoom_ret send_scan (ZOOM_connection c)
2249 {
2250     ZOOM_scanset scan;
2251     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2252     Z_ScanRequest *req = apdu->u.scanRequest;
2253     if (!c->tasks)
2254         return zoom_complete;
2255     assert (c->tasks->which == ZOOM_TASK_SCAN);
2256     scan = c->tasks->u.scan.scan;
2257
2258     req->termListAndStartPoint = scan->termListAndStartPoint;
2259     req->attributeSet = scan->attributeSet;
2260
2261     *req->numberOfTermsRequested =
2262         ZOOM_options_get_int(scan->options, "number", 10);
2263
2264     req->preferredPositionInResponse =
2265         odr_intdup (c->odr_out,
2266                     ZOOM_options_get_int(scan->options, "position", 1));
2267
2268     req->stepSize =
2269         odr_intdup (c->odr_out,
2270                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2271
2272     req->databaseNames = set_DatabaseNames (c, scan->options,
2273                                             &req->num_databaseNames);
2274
2275     return send_APDU (c, apdu);
2276 }
2277
2278 ZOOM_API(size_t)
2279 ZOOM_scanset_size (ZOOM_scanset scan)
2280 {
2281     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2282         return 0;
2283     return scan->scan_response->entries->num_entries;
2284 }
2285
2286 ZOOM_API(const char *)
2287 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2288                    int *occ, int *len)
2289 {
2290     const char *term = 0;
2291     size_t noent = ZOOM_scanset_size (scan);
2292     Z_ScanResponse *res = scan->scan_response;
2293
2294     *len = 0;
2295     *occ = 0;
2296     if (pos >= noent)
2297         return 0;
2298     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2299     {
2300         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2301
2302         if (t->term->which == Z_Term_general)
2303         {
2304             term = (const char *) t->term->u.general->buf;
2305             *len = t->term->u.general->len;
2306         }
2307         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2308     }
2309     return term;
2310 }
2311
2312 ZOOM_API(const char *)
2313 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2314                            int *occ, int *len)
2315 {
2316     const char *term = 0;
2317     size_t noent = ZOOM_scanset_size (scan);
2318     Z_ScanResponse *res = scan->scan_response;
2319
2320     *len = 0;
2321     *occ = 0;
2322     if (pos >= noent)
2323         return 0;
2324     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2325     {
2326         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2327
2328         if (t->displayTerm)
2329         {
2330             term = t->displayTerm;
2331             *len = strlen(term);
2332         }
2333         else if (t->term->which == Z_Term_general)
2334         {
2335             term = (const char *) t->term->u.general->buf;
2336             *len = t->term->u.general->len;
2337         }
2338         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2339     }
2340     return term;
2341 }
2342
2343 ZOOM_API(const char *)
2344 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2345 {
2346     return ZOOM_options_get (scan->options, key);
2347 }
2348
2349 ZOOM_API(void)
2350 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2351                               const char *val)
2352 {
2353     ZOOM_options_set (scan->options, key, val);
2354 }
2355
2356 static Z_APDU *create_es_package (ZOOM_package p, int type)
2357 {
2358     const char *str;
2359     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2360     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2361
2362     *req->function = Z_ExtendedServicesRequest_create;
2363
2364     str = ZOOM_options_get(p->options, "package-name");
2365     if (str && *str)
2366         req->packageName = nmem_strdup (p->odr_out->mem, str);
2367
2368     str = ZOOM_options_get(p->options, "user-id");
2369     if (str)
2370         req->userId = nmem_strdup (p->odr_out->mem, str);
2371
2372     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2373                                               type);
2374
2375     str = ZOOM_options_get(p->options, "function");
2376     if (str)
2377     {
2378         if (!strcmp (str, "create"))
2379             *req->function = 1;
2380         if (!strcmp (str, "delete"))
2381             *req->function = 2;
2382         if (!strcmp (str, "modify"))
2383             *req->function = 3;
2384     }
2385     return apdu;
2386 }
2387
2388 static const char *ill_array_lookup (void *clientData, const char *idx)
2389 {
2390     ZOOM_package p = (ZOOM_package) clientData;
2391     return ZOOM_options_get (p->options, idx+4);
2392 }
2393
2394 static Z_External *encode_ill_request (ZOOM_package p)
2395 {
2396     ODR out = p->odr_out;
2397     ILL_Request *req;
2398     Z_External *r = 0;
2399     struct ill_get_ctl ctl;
2400
2401     ctl.odr = p->odr_out;
2402     ctl.clientData = p;
2403     ctl.f = ill_array_lookup;
2404
2405     req = ill_get_ILLRequest(&ctl, "ill", 0);
2406
2407     if (!ill_Request (out, &req, 0, 0))
2408     {
2409         int ill_request_size;
2410         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2411         if (ill_request_buf)
2412             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2413         return 0;
2414     }
2415     else
2416     {
2417         oident oid;
2418         int illRequest_size = 0;
2419         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2420
2421         oid.proto = PROTO_GENERAL;
2422         oid.oclass = CLASS_GENERAL;
2423         oid.value = VAL_ISO_ILL_1;
2424
2425         r = (Z_External *) odr_malloc (out, sizeof(*r));
2426         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2427         r->indirect_reference = 0;
2428         r->descriptor = 0;
2429         r->which = Z_External_single;
2430
2431         r->u.single_ASN1_type = (Odr_oct *)
2432             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2433         r->u.single_ASN1_type->buf = (unsigned char*)
2434             odr_malloc (out, illRequest_size);
2435         r->u.single_ASN1_type->len = illRequest_size;
2436         r->u.single_ASN1_type->size = illRequest_size;
2437         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2438     }
2439     return r;
2440 }
2441
2442 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2443 {
2444     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2445     const char *str;
2446
2447     req->which = Z_IOItemOrder_esRequest;
2448     req->u.esRequest = (Z_IORequest *)
2449         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2450
2451     /* to keep part ... */
2452     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2453         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2454     req->u.esRequest->toKeep->supplDescription = 0;
2455     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2456         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2457
2458     str = ZOOM_options_get(p->options, "contact-name");
2459     req->u.esRequest->toKeep->contact->name = str ?
2460         nmem_strdup (p->odr_out->mem, str) : 0;
2461
2462     str = ZOOM_options_get(p->options, "contact-phone");
2463     req->u.esRequest->toKeep->contact->phone = str ?
2464         nmem_strdup (p->odr_out->mem, str) : 0;
2465
2466     str = ZOOM_options_get(p->options, "contact-email");
2467     req->u.esRequest->toKeep->contact->email = str ?
2468         nmem_strdup (p->odr_out->mem, str) : 0;
2469
2470     req->u.esRequest->toKeep->addlBilling = 0;
2471
2472     /* not to keep part ... */
2473     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2474         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2475
2476     str = ZOOM_options_get(p->options, "itemorder-setname");
2477     if (!str)
2478         str = "default";
2479
2480     if (!*str)
2481         req->u.esRequest->notToKeep->resultSetItem = 0;
2482     else
2483     {
2484         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2485            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2486
2487         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2488            nmem_strdup (p->odr_out->mem, str);
2489         req->u.esRequest->notToKeep->resultSetItem->item =
2490             (int *) odr_malloc(p->odr_out, sizeof(int));
2491
2492         str = ZOOM_options_get(p->options, "itemorder-item");
2493         *req->u.esRequest->notToKeep->resultSetItem->item =
2494             (str ? atoi(str) : 1);
2495     }
2496     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2497
2498     return req;
2499 }
2500
2501 Z_APDU *create_admin_package(ZOOM_package p, int type,
2502                              Z_ESAdminOriginPartToKeep **toKeepP,
2503                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2504 {
2505     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2506     if (apdu)
2507     {
2508         Z_ESAdminOriginPartToKeep  *toKeep;
2509         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2510         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2511         const char *first_db = "Default";
2512         int num_db;
2513         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2514         if (num_db > 0)
2515             first_db = db[0];
2516
2517         r->direct_reference =
2518             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2519                                    VAL_ADMINSERVICE);
2520         r->descriptor = 0;
2521         r->indirect_reference = 0;
2522         r->which = Z_External_ESAdmin;
2523
2524         r->u.adminService = (Z_Admin *)
2525             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2526         r->u.adminService->which = Z_Admin_esRequest;
2527         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2528             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2529
2530         toKeep = r->u.adminService->u.esRequest->toKeep =
2531             (Z_ESAdminOriginPartToKeep *)
2532             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2533         toKeep->which = type;
2534         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2535         toKeep->u.create = odr_nullval();
2536         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2537
2538         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2539             (Z_ESAdminOriginPartNotToKeep *)
2540             odr_malloc(p->odr_out,
2541                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2542         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2543         notToKeep->u.recordsWillFollow = odr_nullval();
2544         if (toKeepP)
2545             *toKeepP = toKeep;
2546         if (notToKeepP)
2547             *notToKeepP = notToKeep;
2548     }
2549     return apdu;
2550 }
2551
2552 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2553 {
2554     Z_APDU *apdu = create_es_package(p, VAL_XMLUPDATE);
2555     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2556     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2557     const char *doc = ZOOM_options_get(p->options, "doc");
2558
2559     req->taskSpecificParameters = ext;
2560     ext->direct_reference = req->packageType;
2561     ext->descriptor = 0;
2562     ext->indirect_reference = 0;
2563
2564     ext->which = Z_External_octet;
2565     ext->u.single_ASN1_type = (Odr_oct *)
2566         odr_malloc (p->odr_out, sizeof(Odr_oct));
2567
2568     if (!doc)
2569         doc = "";
2570     ext->u.single_ASN1_type->buf = (unsigned char*)
2571         odr_strdup(p->odr_out, doc);
2572     ext->u.single_ASN1_type->size = ext->u.single_ASN1_type->len = strlen(doc);
2573     return apdu;
2574 }
2575
2576 static Z_APDU *create_update_package(ZOOM_package p)
2577 {
2578     Z_APDU *apdu = 0;
2579     const char *first_db = "Default";
2580     int num_db;
2581     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2582     const char *action = ZOOM_options_get(p->options, "action");
2583     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2584     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2585     const char *record_buf = ZOOM_options_get(p->options, "record");
2586     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2587     int syntax_oid = VAL_NONE;
2588     int action_no = -1;
2589
2590     if (syntax_str)
2591         syntax_oid = oid_getvalbyname(syntax_str);
2592     if (!record_buf)
2593     {
2594         record_buf = "void";
2595         syntax_oid = VAL_SUTRS;
2596     }
2597     if (syntax_oid != VAL_NONE)
2598         syntax_oid = VAL_TEXT_XML;
2599
2600     if (num_db > 0)
2601         first_db = db[0];
2602
2603     if (!action)
2604         action = "specialUpdate";
2605
2606     if (!strcmp(action, "recordInsert"))
2607         action_no = Z_IUOriginPartToKeep_recordInsert;
2608     else if (!strcmp(action, "recordReplace"))
2609         action_no = Z_IUOriginPartToKeep_recordReplace;
2610     else if (!strcmp(action, "recordDelete"))
2611         action_no = Z_IUOriginPartToKeep_recordDelete;
2612     else if (!strcmp(action, "elementUpdate"))
2613         action_no = Z_IUOriginPartToKeep_elementUpdate;
2614     else if (!strcmp(action, "specialUpdate"))
2615         action_no = Z_IUOriginPartToKeep_specialUpdate;
2616     else
2617         return 0;
2618
2619     apdu = create_es_package (p, VAL_DBUPDATE);
2620     if (apdu)
2621     {
2622         Z_IUOriginPartToKeep *toKeep;
2623         Z_IUSuppliedRecords *notToKeep;
2624         Z_External *r = (Z_External *)
2625             odr_malloc (p->odr_out, sizeof(*r));
2626
2627         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2628
2629         r->direct_reference =
2630             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2631                                    VAL_DBUPDATE);
2632         r->descriptor = 0;
2633         r->which = Z_External_update;
2634         r->indirect_reference = 0;
2635         r->u.update = (Z_IUUpdate *)
2636             odr_malloc(p->odr_out, sizeof(*r->u.update));
2637
2638         r->u.update->which = Z_IUUpdate_esRequest;
2639         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2640             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2641         toKeep = r->u.update->u.esRequest->toKeep =
2642             (Z_IUOriginPartToKeep *)
2643             odr_malloc(p->odr_out, sizeof(*toKeep));
2644
2645         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2646         toKeep->schema = 0;
2647         toKeep->elementSetName = 0;
2648         toKeep->actionQualifier = 0;
2649         toKeep->action = odr_intdup(p->odr_out, action_no);
2650
2651         notToKeep = r->u.update->u.esRequest->notToKeep =
2652             (Z_IUSuppliedRecords *)
2653             odr_malloc(p->odr_out, sizeof(*notToKeep));
2654         notToKeep->num = 1;
2655         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2656             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2657         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2658             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2659         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2660         if (recordIdOpaque)
2661         {
2662             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2663                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2664             notToKeep->elements[0]->u.opaque->size =
2665                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2666             notToKeep->elements[0]->u.opaque->buf = (unsigned char*)
2667                 odr_strdup(p->odr_out, recordIdOpaque);
2668         }
2669         else if (recordIdNumber)
2670         {
2671             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2672
2673             notToKeep->elements[0]->u.number =
2674                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2675         }
2676         else
2677             notToKeep->elements[0]->u.opaque = 0;
2678         notToKeep->elements[0]->supplementalId = 0;
2679         notToKeep->elements[0]->correlationInfo = 0;
2680         notToKeep->elements[0]->record =
2681             z_ext_record(p->odr_out, syntax_oid,
2682                          record_buf, strlen(record_buf));
2683     }
2684     if (0 && apdu)
2685     {
2686        ODR print = odr_createmem(ODR_PRINT);
2687
2688        z_APDU(print, &apdu, 0, 0);
2689        odr_destroy(print);
2690     }
2691     return apdu;
2692 }
2693
2694 ZOOM_API(void)
2695     ZOOM_package_send (ZOOM_package p, const char *type)
2696 {
2697     Z_APDU *apdu = 0;
2698     ZOOM_connection c;
2699     if (!p)
2700         return;
2701     c = p->connection;
2702     odr_reset (p->odr_out);
2703     xfree (p->buf_out);
2704     p->buf_out = 0;
2705     if (!strcmp(type, "itemorder"))
2706     {
2707         apdu = create_es_package (p, VAL_ITEMORDER);
2708         if (apdu)
2709         {
2710             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2711
2712             r->direct_reference =
2713                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2714                                        VAL_ITEMORDER);
2715             r->descriptor = 0;
2716             r->which = Z_External_itemOrder;
2717             r->indirect_reference = 0;
2718             r->u.itemOrder = encode_item_order (p);
2719
2720             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2721         }
2722     }
2723     else if (!strcmp(type, "create"))  /* create database */
2724     {
2725         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2726                                     0, 0);
2727     }
2728     else if (!strcmp(type, "drop"))  /* drop database */
2729     {
2730         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2731                                     0, 0);
2732     }
2733     else if (!strcmp(type, "commit"))  /* commit changes */
2734     {
2735         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
2736                                     0, 0);
2737     }
2738     else if (!strcmp(type, "update")) /* update record(s) */
2739     {
2740         apdu = create_update_package(p);
2741     }
2742     else if (!strcmp(type, "xmlupdate"))
2743     {
2744         apdu = create_xmlupdate_package(p);
2745     }
2746     if (apdu)
2747     {
2748         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2749         {
2750             char *buf;
2751
2752             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2753             task->u.package = p;
2754             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2755             p->buf_out = (char *) xmalloc (p->len_out);
2756             memcpy (p->buf_out, buf, p->len_out);
2757
2758             (p->refcount)++;
2759             if (!c->async)
2760             {
2761                 while (ZOOM_event (1, &c))
2762                     ;
2763             }
2764         }
2765     }
2766 }
2767
2768 ZOOM_API(ZOOM_package)
2769     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2770 {
2771     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2772
2773     p->connection = c;
2774     p->odr_out = odr_createmem (ODR_ENCODE);
2775     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2776     p->refcount = 1;
2777     p->buf_out = 0;
2778     p->len_out = 0;
2779     return p;
2780 }
2781
2782 ZOOM_API(void)
2783     ZOOM_package_destroy(ZOOM_package p)
2784 {
2785     if (!p)
2786         return;
2787     (p->refcount)--;
2788     if (p->refcount == 0)
2789     {
2790         odr_destroy (p->odr_out);
2791         xfree (p->buf_out);
2792
2793         ZOOM_options_destroy (p->options);
2794         xfree (p);
2795     }
2796 }
2797
2798 ZOOM_API(const char *)
2799 ZOOM_package_option_get (ZOOM_package p, const char *key)
2800 {
2801     return ZOOM_options_get (p->options, key);
2802 }
2803
2804
2805 ZOOM_API(void)
2806 ZOOM_package_option_set (ZOOM_package p, const char *key,
2807                               const char *val)
2808 {
2809     ZOOM_options_set (p->options, key, val);
2810 }
2811
2812 static int ZOOM_connection_exec_task (ZOOM_connection c)
2813 {
2814     ZOOM_task task = c->tasks;
2815     zoom_ret ret = zoom_complete;
2816
2817     if (!task)
2818     {
2819         yaz_log (log_level, "ZOOM_connection_exec_task task=<null>");
2820         return 0;
2821     }
2822     yaz_log (log_level, "ZOOM_connection_exec_task type=%d run=%d",
2823              task->which, task->running);
2824     if (c->error != ZOOM_ERROR_NONE)
2825     {
2826         yaz_log (log_level, "remove tasks because of error = %d", c->error);
2827         ZOOM_connection_remove_tasks (c);
2828         return 0;
2829     }
2830     if (task->running)
2831     {
2832         yaz_log (log_level, "task already running");
2833         return 0;
2834     }
2835     task->running = 1;
2836     ret = zoom_complete;
2837     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2838     {
2839         switch (task->which)
2840         {
2841         case ZOOM_TASK_SEARCH:
2842             if (c->proto == PROTO_HTTP)
2843                 ret = ZOOM_connection_srw_send_search(c);
2844             else
2845                 ret = ZOOM_connection_send_search(c);
2846             break;
2847         case ZOOM_TASK_RETRIEVE:
2848             if (c->proto == PROTO_HTTP)
2849                 ret = ZOOM_connection_srw_send_search(c);
2850             else
2851                 ret = send_present (c);
2852             break;
2853         case ZOOM_TASK_CONNECT:
2854             ret = do_connect(c);
2855             break;
2856         case ZOOM_TASK_SCAN:
2857             ret = send_scan(c);
2858             break;
2859         case ZOOM_TASK_PACKAGE:
2860             ret = send_package(c);
2861             break;
2862         case ZOOM_TASK_SORT:
2863             c->tasks->u.sort.resultset->r_sort_spec =
2864                 c->tasks->u.sort.q->sort_spec;
2865             ret = send_sort(c, c->tasks->u.sort.resultset);
2866             break;
2867         }
2868     }
2869     else
2870     {
2871         yaz_log (log_level, "remove tasks because no connection exist");
2872         ZOOM_connection_remove_tasks (c);
2873     }
2874     if (ret == zoom_complete)
2875     {
2876         yaz_log (log_level, "task removed (complete)");
2877         ZOOM_connection_remove_task (c);
2878         return 0;
2879     }
2880     yaz_log (log_level, "task pending");
2881     return 1;
2882 }
2883
2884 static zoom_ret send_sort_present (ZOOM_connection c)
2885 {
2886     zoom_ret r = zoom_complete;
2887
2888     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
2889         r = send_sort (c, c->tasks->u.search.resultset);
2890     if (r == zoom_complete)
2891         r = send_present (c);
2892     return r;
2893 }
2894
2895 static int es_response (ZOOM_connection c,
2896                         Z_ExtendedServicesResponse *res)
2897 {
2898     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2899         return 0;
2900     if (res->diagnostics && res->num_diagnostics > 0)
2901         response_diag(c, res->diagnostics[0]);
2902     if (res->taskPackage &&
2903         res->taskPackage->which == Z_External_extendedService)
2904     {
2905         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2906         Odr_oct *id = taskPackage->targetReference;
2907
2908         if (id)
2909             ZOOM_options_setl (c->tasks->u.package->options,
2910                                "targetReference", (char*) id->buf, id->len);
2911     }
2912     if (res->taskPackage &&
2913         res->taskPackage->which == Z_External_octet)
2914     {
2915         Odr_oct *doc = res->taskPackage->u.octet_aligned;
2916         ZOOM_options_setl (c->tasks->u.package->options,
2917                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
2918     }
2919     return 1;
2920 }
2921
2922 static void interpret_init_diag(ZOOM_connection c,
2923                                 Z_DiagnosticFormat *diag)
2924 {
2925     if (diag->num > 0)
2926     {
2927         Z_DiagnosticFormat_s *ds = diag->elements[0];
2928         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
2929             response_default_diag(c, ds->u.defaultDiagRec);
2930     }
2931 }
2932
2933
2934 static void interpret_otherinformation_field(ZOOM_connection c,
2935                                              Z_OtherInformation *ui)
2936 {
2937     int i;
2938     for (i = 0; i < ui->num_elements; i++)
2939     {
2940         Z_OtherInformationUnit *unit = ui->list[i];
2941         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
2942             unit->information.externallyDefinedInfo &&
2943             unit->information.externallyDefinedInfo->which ==
2944             Z_External_diag1)
2945         {
2946             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
2947         }
2948     }
2949 }
2950
2951 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2952 {
2953     Z_InitResponse *initrs;
2954
2955     c->mask = 0;
2956     yaz_log (log_level, "recv APDU type=%d", apdu->which);
2957     switch(apdu->which)
2958     {
2959     case Z_APDU_initResponse:
2960         initrs = apdu->u.initResponse;
2961         ZOOM_connection_option_set(c, "serverImplementationId",
2962                                    initrs->implementationId ?
2963                                    initrs->implementationId : "");
2964         ZOOM_connection_option_set(c, "serverImplementationName",
2965                                    initrs->implementationName ?
2966                                    initrs->implementationName : "");
2967         ZOOM_connection_option_set(c, "serverImplementationVersion",
2968                                    initrs->implementationVersion ?
2969                                    initrs->implementationVersion : "");
2970         /* Set the three old options too, for old applications */
2971         ZOOM_connection_option_set(c, "targetImplementationId",
2972                                    initrs->implementationId ?
2973                                    initrs->implementationId : "");
2974         ZOOM_connection_option_set(c, "targetImplementationName",
2975                                    initrs->implementationName ?
2976                                    initrs->implementationName : "");
2977         ZOOM_connection_option_set(c, "targetImplementationVersion",
2978                                    initrs->implementationVersion ?
2979                                    initrs->implementationVersion : "");
2980         if (!*initrs->result)
2981         {
2982             Z_External *uif = initrs->userInformationField;
2983
2984             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
2985
2986             if (uif && uif->which == Z_External_userInfo1)
2987                 interpret_otherinformation_field(c, uif->u.userInfo1);
2988         }
2989         else
2990         {
2991             char *cookie =
2992                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2993                                           VAL_COOKIE, 1, 0);
2994             xfree (c->cookie_in);
2995             c->cookie_in = 0;
2996             if (cookie)
2997                 c->cookie_in = xstrdup(cookie);
2998             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2999                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3000                 c->support_named_resultsets = 1;
3001             if (c->tasks)
3002             {
3003                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3004                 ZOOM_connection_remove_task (c);
3005             }
3006             ZOOM_connection_exec_task (c);
3007         }
3008         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3009         {
3010             NMEM tmpmem = nmem_create();
3011             Z_CharSetandLanguageNegotiation *p =
3012                 yaz_get_charneg_record(initrs->otherInfo);
3013
3014             if (p)
3015             {
3016                 char *charset = NULL, *lang = NULL;
3017                 int sel;
3018
3019                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3020                 yaz_log(log_level, "Target accepted: charset %s, "
3021                         "language %s, select %d",
3022                         charset ? charset : "none", lang ? lang : "none", sel);
3023                 if (charset)
3024                     ZOOM_connection_option_set (c, "negotiation-charset",
3025                                                 charset);
3026                 if (lang)
3027                     ZOOM_connection_option_set (c, "negotiation-lang",
3028                                                 lang);
3029
3030                 ZOOM_connection_option_set (
3031                     c,  "negotiation-charset-in-effect-for-records",
3032                     (sel != 0) ? "1" : "0");
3033                 nmem_destroy(tmpmem);
3034             }
3035         }
3036         break;
3037     case Z_APDU_searchResponse:
3038         handle_search_response (c, apdu->u.searchResponse);
3039         if (send_sort_present (c) == zoom_complete)
3040             ZOOM_connection_remove_task (c);
3041         break;
3042     case Z_APDU_presentResponse:
3043         handle_present_response (c, apdu->u.presentResponse);
3044         if (send_present (c) == zoom_complete)
3045             ZOOM_connection_remove_task (c);
3046         break;
3047     case Z_APDU_sortResponse:
3048         sort_response (c, apdu->u.sortResponse);
3049         if (send_present (c) == zoom_complete)
3050             ZOOM_connection_remove_task (c);
3051         break;
3052     case Z_APDU_scanResponse:
3053         scan_response (c, apdu->u.scanResponse);
3054         ZOOM_connection_remove_task (c);
3055         break;
3056     case Z_APDU_extendedServicesResponse:
3057         es_response (c, apdu->u.extendedServicesResponse);
3058         ZOOM_connection_remove_task (c);
3059         break;
3060     case Z_APDU_close:
3061         if (c->reconnect_ok)
3062         {
3063             do_close(c);
3064             c->tasks->running = 0;
3065             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3066         }
3067         else
3068         {
3069             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3070             do_close(c);
3071         }
3072         break;
3073     default:
3074         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3075         do_close(c);
3076     }
3077 }
3078
3079 #if HAVE_XML2
3080 static void handle_srw_response(ZOOM_connection c,
3081                                 Z_SRW_searchRetrieveResponse *res)
3082 {
3083     ZOOM_resultset resultset = 0;
3084     int i;
3085     NMEM nmem;
3086     ZOOM_Event event;
3087
3088     if (!c->tasks)
3089         return;
3090
3091     if (c->tasks->which == ZOOM_TASK_SEARCH)
3092         resultset = c->tasks->u.search.resultset;
3093     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3094         resultset = c->tasks->u.retrieve.resultset;
3095     else
3096         return ;
3097
3098     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3099     ZOOM_connection_put_event(c, event);
3100
3101     resultset->size = 0;
3102
3103     yaz_log(log_level, "got SRW response OK");
3104
3105     if (res->numberOfRecords)
3106         resultset->size = *res->numberOfRecords;
3107
3108     for (i = 0; i<res->num_records; i++)
3109     {
3110         int pos;
3111
3112         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3113             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3114
3115         if (res->records[i].recordPosition &&
3116             *res->records[i].recordPosition > 0)
3117             pos = *res->records[i].recordPosition - 1;
3118         else
3119             pos = resultset->start + i;
3120
3121         npr->databaseName = 0;
3122         npr->which = Z_NamePlusRecord_databaseRecord;
3123         npr->u.databaseRecord = (Z_External *)
3124             odr_malloc(c->odr_in, sizeof(Z_External));
3125         npr->u.databaseRecord->descriptor = 0;
3126         npr->u.databaseRecord->direct_reference =
3127             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3128         npr->u.databaseRecord->which = Z_External_octet;
3129         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3130             odr_malloc(c->odr_in, sizeof(Odr_oct));
3131         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3132             res->records[i].recordData_buf;
3133         npr->u.databaseRecord->u.octet_aligned->len =
3134             npr->u.databaseRecord->u.octet_aligned->size =
3135             res->records[i].recordData_len;
3136         record_cache_add (resultset, npr, pos);
3137     }
3138     if (res->num_diagnostics > 0)
3139     {
3140         const char *uri = res->diagnostics[0].uri;
3141         if (uri)
3142         {
3143             int code = 0;
3144             const char *cp;
3145             if ((cp = strrchr(uri, '/')))
3146                 code = atoi(cp+1);
3147             set_dset_error(c, code, uri,
3148                            res->diagnostics[0].details, 0);
3149         }
3150     }
3151     nmem = odr_extract_mem(c->odr_in);
3152     nmem_transfer(resultset->odr->mem, nmem);
3153     nmem_destroy(nmem);
3154 }
3155 #endif
3156
3157 #if HAVE_XML2
3158 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3159 {
3160     int ret = -1;
3161     const char *content_type = z_HTTP_header_lookup(hres->headers,
3162                                                     "Content-Type");
3163     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3164                                                        "Connection");
3165     c->mask = 0;
3166     yaz_log (log_level, "handle_http");
3167
3168     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3169     {
3170         Z_SOAP *soap_package = 0;
3171         ODR o = c->odr_in;
3172         Z_SOAP_Handler soap_handlers[2] = {
3173             {"http://www.loc.gov/zing/srw/", 0,
3174              (Z_SOAP_fun) yaz_srw_codec},
3175             {0, 0, 0}
3176         };
3177         ret = z_soap_codec(o, &soap_package,
3178                            &hres->content_buf, &hres->content_len,
3179                            soap_handlers);
3180         if (!ret && soap_package->which == Z_SOAP_generic &&
3181             soap_package->u.generic->no == 0)
3182         {
3183             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3184             if (sr->which == Z_SRW_searchRetrieve_response)
3185                 handle_srw_response(c, sr->u.response);
3186             else
3187                 ret = -1;
3188         }
3189         else if (!ret && (soap_package->which == Z_SOAP_fault
3190                           || soap_package->which == Z_SOAP_error))
3191         {
3192             set_HTTP_error(c, hres->code,
3193                            soap_package->u.fault->fault_code,
3194                            soap_package->u.fault->fault_string);
3195         }
3196         else
3197             ret = -1;
3198     }
3199     if (ret)
3200     {
3201         if (hres->code != 200)
3202             set_HTTP_error(c, hres->code, 0, 0);
3203         else
3204             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3205         do_close (c);
3206     }
3207     ZOOM_connection_remove_task(c);
3208     if (!strcmp(hres->version, "1.0"))
3209     {
3210         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3211         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3212             do_close(c);
3213     }
3214     else
3215     {
3216         /* HTTP 1.1: only if no close we stay alive .. */
3217         if (connection_head && !strcmp(connection_head, "close"))
3218             do_close(c);
3219     }
3220 }
3221 #endif
3222
3223 static int do_read (ZOOM_connection c)
3224 {
3225     int r, more;
3226     ZOOM_Event event;
3227
3228     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3229     ZOOM_connection_put_event (c, event);
3230
3231     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3232     more = cs_more(c->cs);
3233     yaz_log (log_level, "do_read len=%d more=%d", r, more);
3234     if (r == 1)
3235         return 0;
3236     if (r <= 0)
3237     {
3238         if (c->reconnect_ok)
3239         {
3240             do_close (c);
3241             c->reconnect_ok = 0;
3242             yaz_log (log_level, "reconnect read");
3243             c->tasks->running = 0;
3244             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3245         }
3246         else
3247         {
3248             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3249             do_close (c);
3250         }
3251     }
3252     else
3253     {
3254         Z_GDU *gdu;
3255         ZOOM_Event event;
3256
3257         odr_reset (c->odr_in);
3258         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3259         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3260         ZOOM_connection_put_event (c, event);
3261
3262         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3263         {
3264             int x;
3265             int err = odr_geterrorx(c->odr_in, &x);
3266             char msg[60];
3267             const char *element = odr_getelement(c->odr_in);
3268             sprintf (msg, "ODR code %d:%d element=%-20s",
3269                      err, x, element ? element : "<unknown>");
3270             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3271             do_close (c);
3272         }
3273         else if (gdu->which == Z_GDU_Z3950)
3274             handle_apdu (c, gdu->u.z3950);
3275         else if (gdu->which == Z_GDU_HTTP_Response)
3276         {
3277 #if HAVE_XML2
3278             handle_http (c, gdu->u.HTTP_Response);
3279 #else
3280             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3281             do_close (c);
3282 #endif
3283         }
3284         c->reconnect_ok = 0;
3285     }
3286     return 1;
3287 }
3288
3289 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3290 {
3291     int r;
3292     ZOOM_Event event;
3293
3294     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3295     ZOOM_connection_put_event (c, event);
3296
3297     yaz_log (log_level, "do_write_ex len=%d", len_out);
3298     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3299     {
3300         if (c->reconnect_ok)
3301         {
3302             do_close (c);
3303             c->reconnect_ok = 0;
3304             yaz_log (log_level, "reconnect write");
3305             c->tasks->running = 0;
3306             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3307             return zoom_pending;
3308         }
3309         if (c->state == STATE_CONNECTING)
3310             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3311         else
3312             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3313         do_close (c);
3314         return zoom_complete;
3315     }
3316     else if (r == 1)
3317     {
3318         c->mask = ZOOM_SELECT_EXCEPT;
3319         if (c->cs->io_pending & CS_WANT_WRITE)
3320             c->mask += ZOOM_SELECT_WRITE;
3321         if (c->cs->io_pending & CS_WANT_READ)
3322             c->mask += ZOOM_SELECT_READ;
3323         yaz_log (log_level, "do_write_ex 1 mask=%d", c->mask);
3324     }
3325     else
3326     {
3327         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3328         yaz_log (log_level, "do_write_ex 2 mask=%d", c->mask);
3329     }
3330     return zoom_pending;
3331 }
3332
3333 static zoom_ret do_write(ZOOM_connection c)
3334 {
3335     return do_write_ex (c, c->buf_out, c->len_out);
3336 }
3337
3338
3339 ZOOM_API(const char *)
3340 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3341 {
3342     return ZOOM_options_get (c->options, key);
3343 }
3344
3345 ZOOM_API(void)
3346 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3347                             const char *val)
3348 {
3349     ZOOM_options_set (c->options, key, val);
3350 }
3351
3352 ZOOM_API(void)
3353 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3354                              const char *val, int len)
3355 {
3356     ZOOM_options_setl (c->options, key, val, len);
3357 }
3358
3359 ZOOM_API(const char *)
3360 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3361 {
3362     return ZOOM_options_get (r->options, key);
3363 }
3364
3365 ZOOM_API(void)
3366 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3367                                   const char *val)
3368 {
3369     ZOOM_options_set (r->options, key, val);
3370 }
3371
3372
3373 ZOOM_API(int)
3374 ZOOM_connection_errcode (ZOOM_connection c)
3375 {
3376     return ZOOM_connection_error (c, 0, 0);
3377 }
3378
3379 ZOOM_API(const char *)
3380 ZOOM_connection_errmsg (ZOOM_connection c)
3381 {
3382     const char *msg;
3383     ZOOM_connection_error (c, &msg, 0);
3384     return msg;
3385 }
3386
3387 ZOOM_API(const char *)
3388 ZOOM_connection_addinfo (ZOOM_connection c)
3389 {
3390     const char *addinfo;
3391     ZOOM_connection_error (c, 0, &addinfo);
3392     return addinfo;
3393 }
3394
3395 ZOOM_API(const char *)
3396 ZOOM_diag_str (int error)
3397 {
3398     switch (error)
3399     {
3400     case ZOOM_ERROR_NONE:
3401         return "No error";
3402     case ZOOM_ERROR_CONNECT:
3403         return "Connect failed";
3404     case ZOOM_ERROR_MEMORY:
3405         return "Out of memory";
3406     case ZOOM_ERROR_ENCODE:
3407         return "Encoding failed";
3408     case ZOOM_ERROR_DECODE:
3409         return "Decoding failed";
3410     case ZOOM_ERROR_CONNECTION_LOST:
3411         return "Connection lost";
3412     case ZOOM_ERROR_INIT:
3413         return "Init rejected";
3414     case ZOOM_ERROR_INTERNAL:
3415         return "Internal failure";
3416     case ZOOM_ERROR_TIMEOUT:
3417         return "Timeout";
3418     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3419         return "Unsupported protocol";
3420     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3421         return "Unsupported query type";
3422     case ZOOM_ERROR_INVALID_QUERY:
3423         return "Invalid query";
3424     default:
3425         return diagbib1_str (error);
3426     }
3427 }
3428
3429 ZOOM_API(int)
3430 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3431                          const char **addinfo, const char **diagset)
3432 {
3433     int error = c->error;
3434     if (cp)
3435     {
3436         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3437             *cp = ZOOM_diag_str(error);
3438         else if (!strcmp(c->diagset, "HTTP"))
3439             *cp = z_HTTP_errmsg(c->error);
3440         else if (!strcmp(c->diagset, "Bib-1"))
3441             *cp = ZOOM_diag_str(error);
3442         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3443             *cp = yaz_diag_srw_str(c->error);
3444         else
3445             *cp = "Unknown error and diagnostic set";
3446     }
3447     if (addinfo)
3448         *addinfo = c->addinfo ? c->addinfo : "";
3449     if (diagset)
3450         *diagset = c->diagset ? c->diagset : "";
3451     return c->error;
3452 }
3453
3454 ZOOM_API(int)
3455 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3456                        const char **addinfo)
3457 {
3458     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3459 }
3460
3461 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3462 {
3463     ZOOM_Event event = 0;
3464     int r = cs_look(c->cs);
3465     yaz_log (log_level, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
3466              c, mask, r);
3467
3468     if (r == CS_NONE)
3469     {
3470         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3471         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3472         do_close (c);
3473         ZOOM_connection_put_event (c, event);
3474     }
3475     else if (r == CS_CONNECT)
3476     {
3477         int ret;
3478         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3479
3480         ret = cs_rcvconnect (c->cs);
3481         yaz_log (log_level, "cs_rcvconnect returned %d", ret);
3482         if (ret == 1)
3483         {
3484             c->mask = ZOOM_SELECT_EXCEPT;
3485             if (c->cs->io_pending & CS_WANT_WRITE)
3486                 c->mask += ZOOM_SELECT_WRITE;
3487             if (c->cs->io_pending & CS_WANT_READ)
3488                 c->mask += ZOOM_SELECT_READ;
3489             ZOOM_connection_put_event (c, event);
3490         }
3491         else if (ret == 0)
3492         {
3493             ZOOM_connection_put_event (c, event);
3494             get_cert(c);
3495             if (c->proto == PROTO_Z3950)
3496                 ZOOM_connection_send_init(c);
3497             else
3498             {
3499                 /* no init request for SRW .. */
3500                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3501                 ZOOM_connection_remove_task (c);
3502                 c->mask = 0;
3503                 ZOOM_connection_exec_task (c);
3504             }
3505             c->state = STATE_ESTABLISHED;
3506         }
3507         else
3508         {
3509             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3510             do_close (c);
3511             ZOOM_connection_put_event (c, event);
3512         }
3513     }
3514     else
3515     {
3516         if (mask & ZOOM_SELECT_READ)
3517             do_read (c);
3518         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3519             do_write (c);
3520     }
3521     return 1;
3522 }
3523
3524 ZOOM_API(int)
3525 ZOOM_connection_last_event(ZOOM_connection cs)
3526 {
3527     if (!cs)
3528         return ZOOM_EVENT_NONE;
3529     return cs->last_event;
3530 }
3531
3532 ZOOM_API(int)
3533 ZOOM_event (int no, ZOOM_connection *cs)
3534 {
3535     int timeout = 30;      /* default timeout in seconds */
3536     int timeout_set = 0;   /* whether it was overriden at all */
3537 #if HAVE_SYS_POLL_H
3538     struct pollfd pollfds[1024];
3539     ZOOM_connection poll_cs[1024];
3540 #else
3541     struct timeval tv;
3542     fd_set input, output, except;
3543 #endif
3544     int i, r, nfds;
3545     int max_fd = 0;
3546
3547     for (i = 0; i<no; i++)
3548     {
3549         ZOOM_connection c = cs[i];
3550         ZOOM_Event event;
3551         if (c && (event = ZOOM_connection_get_event(c)))
3552         {
3553             ZOOM_Event_destroy (event);
3554             return i+1;
3555         }
3556     }
3557     for (i = 0; i<no; i++)
3558     {
3559         ZOOM_connection c = cs[i];
3560         ZOOM_Event event;
3561         if (c && ZOOM_connection_exec_task (c))
3562         {
3563             if ((event = ZOOM_connection_get_event(c)))
3564             {
3565                 ZOOM_Event_destroy (event);
3566                 return i+1;
3567             }
3568         }
3569     }
3570 #if HAVE_SYS_POLL_H
3571
3572 #else
3573     FD_ZERO (&input);
3574     FD_ZERO (&output);
3575     FD_ZERO (&except);
3576 #endif
3577     nfds = 0;
3578     for (i = 0; i<no; i++)
3579     {
3580         ZOOM_connection c = cs[i];
3581         int fd, mask;
3582         int this_timeout;
3583
3584         if (!c)
3585             continue;
3586         fd = z3950_connection_socket(c);
3587         mask = z3950_connection_mask(c);
3588
3589         if (fd == -1)
3590             continue;
3591         if (max_fd < fd)
3592             max_fd = fd;
3593
3594         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3595         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3596         if (this_timeout != -2)
3597         {
3598             /* ensure the minimum timeout is used */
3599             if (!timeout_set)
3600                 timeout = this_timeout;
3601             else if (this_timeout != -1 && this_timeout < timeout)
3602                 timeout = this_timeout;
3603             timeout_set = 1;
3604         }
3605 #if HAVE_SYS_POLL_H
3606         if (mask)
3607         {
3608             short poll_events = 0;
3609
3610             if (mask & ZOOM_SELECT_READ)
3611                 poll_events += POLLIN;
3612             if (mask & ZOOM_SELECT_WRITE)
3613                 poll_events += POLLOUT;
3614             if (mask & ZOOM_SELECT_EXCEPT)
3615                 poll_events += POLLERR;
3616             pollfds[nfds].fd = fd;
3617             pollfds[nfds].events = poll_events;
3618             pollfds[nfds].revents = 0;
3619             poll_cs[nfds] = c;
3620             nfds++;
3621         }
3622 #else
3623         if (mask & ZOOM_SELECT_READ)
3624         {
3625             FD_SET (fd, &input);
3626             nfds++;
3627         }
3628         if (mask & ZOOM_SELECT_WRITE)
3629         {
3630             FD_SET (fd, &output);
3631             nfds++;
3632         }
3633         if (mask & ZOOM_SELECT_EXCEPT)
3634         {
3635             FD_SET (fd, &except);
3636             nfds++;
3637         }
3638 #endif
3639     }
3640     if (!nfds)
3641         return 0;
3642
3643 #if HAVE_SYS_POLL_H
3644     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3645     for (i = 0; i<nfds; i++)
3646     {
3647         ZOOM_connection c = poll_cs[i];
3648         if (r && c->mask)
3649         {
3650             int mask = 0;
3651             if (pollfds[i].revents & POLLIN)
3652                 mask += ZOOM_SELECT_READ;
3653             if (pollfds[i].revents & POLLOUT)
3654                 mask += ZOOM_SELECT_WRITE;
3655             if (pollfds[i].revents & POLLERR)
3656                 mask += ZOOM_SELECT_EXCEPT;
3657             if (mask)
3658                 ZOOM_connection_do_io(c, mask);
3659         }
3660         else if (r == 0 && c->mask)
3661         {
3662             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3663             /* timeout and this connection was waiting */
3664             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3665             do_close (c);
3666             ZOOM_connection_put_event(c, event);
3667         }
3668     }
3669 #else
3670     tv.tv_sec = timeout;
3671     tv.tv_usec = 0;
3672     yaz_log (log_level, "select start");
3673     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
3674     yaz_log (log_level, "select stop, returned r=%d", r);
3675     for (i = 0; i<no; i++)
3676     {
3677         ZOOM_connection c = cs[i];
3678         int fd, mask;
3679
3680         if (!c)
3681             continue;
3682         fd = z3950_connection_socket(c);
3683         mask = 0;
3684         if (r && c->mask)
3685         {
3686             /* no timeout and real socket */
3687             if (FD_ISSET(fd, &input))
3688                 mask += ZOOM_SELECT_READ;
3689             if (FD_ISSET(fd, &output))
3690                 mask += ZOOM_SELECT_WRITE;
3691             if (FD_ISSET(fd, &except))
3692                 mask += ZOOM_SELECT_EXCEPT;
3693             if (mask)
3694                 ZOOM_connection_do_io(c, mask);
3695         }
3696         if (r == 0 && c->mask)
3697         {
3698             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3699             /* timeout and this connection was waiting */
3700             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3701             do_close (c);
3702             yaz_log (log_level, "timeout");
3703             ZOOM_connection_put_event(c, event);
3704         }
3705     }
3706 #endif
3707     for (i = 0; i<no; i++)
3708     {
3709         ZOOM_connection c = cs[i];
3710         ZOOM_Event event;
3711         if (c && (event = ZOOM_connection_get_event(c)))
3712         {
3713             ZOOM_Event_destroy (event);
3714             return i+1;
3715         }
3716     }
3717     return 0;
3718 }