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 1.48 2005-11-01 15:08:02 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_api = 0;
  44 static int log_details = 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 void initlog()
  55 {
  56     static int log_level_initialized = 0;
  57     if (!log_level_initialized)
  58     {
  59         log_api = yaz_log_module_level("zoom");
  60         log_details = yaz_log_module_level("zoomdetails");
  61         log_level_initialized = 1;
  62     }
  63 }
  64
  65 static ZOOM_Event ZOOM_Event_create (int kind)
  66 {
  67     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  68     event->kind = kind;
  69     event->next = 0;
  70     event->prev = 0;
  71     return event;
  72 }
  73
  74 static void ZOOM_Event_destroy (ZOOM_Event event)
  75 {
  76     xfree (event);
  77 }
  78
  79 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  80 {
  81     if (c->m_queue_back)
  82     {
  83         c->m_queue_back->prev = event;
  84         assert (c->m_queue_front);
  85     }
  86     else
  87     {
  88         assert (!c->m_queue_front);
  89         c->m_queue_front = event;
  90     }
  91     event->next = c->m_queue_back;
  92     event->prev = 0;
  93     c->m_queue_back = event;
  94 }
  95
  96 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
  97 {
  98     ZOOM_Event event = c->m_queue_front;
  99     if (!event)
 100     {
 101         c->last_event = ZOOM_EVENT_NONE;
 102         return 0;
 103     }
 104     assert (c->m_queue_back);
 105     c->m_queue_front = event->prev;
 106     if (c->m_queue_front)
 107     {
 108         assert (c->m_queue_back);
 109         c->m_queue_front->next = 0;
 110     }
 111     else
 112         c->m_queue_back = 0;
 113     c->last_event = event->kind;
 114     return event;
 115 }
 116
 117
 118 static void set_dset_error (ZOOM_connection c, int error,
 119                             const char *dset,
 120                             const char *addinfo, const char *addinfo2)
 121 {
 122     char *cp;
 123
 124     xfree (c->addinfo);
 125     c->addinfo = 0;
 126     c->error = error;
 127     if (!c->diagset || strcmp(dset, c->diagset))
 128     {
 129         xfree(c->diagset);
 130         c->diagset = xstrdup(dset);
 131         /* remove integer part from SRW diagset .. */
 132         if ((cp = strrchr(c->diagset, '/')))
 133            *cp = '\0';
 134     }
 135     if (addinfo && addinfo2)
 136     {
 137         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 138         strcpy(c->addinfo, addinfo);
 139         strcat(c->addinfo, addinfo2);
 140     }
 141     else if (addinfo)
 142         c->addinfo = xstrdup(addinfo);
 143     if (error)
 144         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 145                 c, c->host_port ? c->host_port : "<>", dset, error,
 146                 addinfo ? addinfo : "",
 147                 addinfo2 ? addinfo2 : "");
 148 }
 149
 150 #if HAVE_XML2
 151 static void set_HTTP_error (ZOOM_connection c, int error,
 152                             const char *addinfo, const char *addinfo2)
 153 {
 154     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 155 }
 156 #endif
 157
 158 static void set_ZOOM_error (ZOOM_connection c, int error,
 159                             const char *addinfo)
 160 {
 161     set_dset_error(c, error, "ZOOM", addinfo, 0);
 162 }
 163
 164 static void clear_error (ZOOM_connection c)
 165 {
 166
 167     switch (c->error)
 168     {
 169     case ZOOM_ERROR_CONNECT:
 170     case ZOOM_ERROR_MEMORY:
 171     case ZOOM_ERROR_DECODE:
 172     case ZOOM_ERROR_CONNECTION_LOST:
 173     case ZOOM_ERROR_INIT:
 174     case ZOOM_ERROR_INTERNAL:
 175     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 176         break;
 177     default:
 178         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 179     }
 180 }
 181
 182 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 183 {
 184     ZOOM_task *taskp = &c->tasks;
 185     while (*taskp)
 186         taskp = &(*taskp)->next;
 187     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 188     (*taskp)->running = 0;
 189     (*taskp)->which = which;
 190     (*taskp)->next = 0;
 191     clear_error (c);
 192     return *taskp;
 193 }
 194
 195 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 196 {
 197     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 198
 199     task->next = c->tasks;
 200     c->tasks = task;
 201
 202     task->running = 0;
 203     task->which = which;
 204     clear_error (c);
 205     return task;
 206 }
 207
 208 void ZOOM_connection_remove_task (ZOOM_connection c)
 209 {
 210     ZOOM_task task = c->tasks;
 211
 212     if (task)
 213     {
 214         c->tasks = task->next;
 215         switch (task->which)
 216         {
 217         case ZOOM_TASK_SEARCH:
 218             ZOOM_resultset_destroy (task->u.search.resultset);
 219             break;
 220         case ZOOM_TASK_RETRIEVE:
 221             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 222             break;
 223         case ZOOM_TASK_CONNECT:
 224             break;
 225         case ZOOM_TASK_SCAN:
 226             ZOOM_scanset_destroy (task->u.scan.scan);
 227             break;
 228         case ZOOM_TASK_PACKAGE:
 229             ZOOM_package_destroy (task->u.package);
 230             break;
 231         case ZOOM_TASK_SORT:
 232             ZOOM_resultset_destroy (task->u.sort.resultset);
 233             ZOOM_query_destroy(task->u.sort.q);
 234             break;
 235         default:
 236             assert (0);
 237         }
 238         xfree (task);
 239     }
 240 }
 241
 242 static int ZOOM_connection_exec_task (ZOOM_connection c);
 243
 244 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 245 {
 246     while (c->tasks)
 247         ZOOM_connection_remove_task(c);
 248 }
 249
 250 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 251
 252 ZOOM_API(ZOOM_connection)
 253 ZOOM_connection_create (ZOOM_options options)
 254 {
 255     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 256
 257     initlog();
 258
 259     yaz_log(log_api, "%p ZOOM_connection_create", c);
 260
 261     c->proto = PROTO_Z3950;
 262     c->cs = 0;
 263     c->mask = 0;
 264     c->reconnect_ok = 0;
 265     c->state = STATE_IDLE;
 266     c->addinfo = 0;
 267     c->diagset = 0;
 268     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 269     c->buf_in = 0;
 270     c->len_in = 0;
 271     c->buf_out = 0;
 272     c->len_out = 0;
 273     c->resultsets = 0;
 274
 275     c->options = ZOOM_options_create_with_parent(options);
 276
 277     c->host_port = 0;
 278     c->path = 0;
 279     c->proxy = 0;
 280
 281     c->charset = c->lang = 0;
 282
 283     c->cookie_out = 0;
 284     c->cookie_in = 0;
 285     c->client_IP = 0;
 286     c->tasks = 0;
 287
 288     c->odr_in = odr_createmem (ODR_DECODE);
 289     c->odr_out = odr_createmem (ODR_ENCODE);
 290
 291     c->async = 0;
 292     c->support_named_resultsets = 0;
 293     c->last_event = ZOOM_EVENT_NONE;
 294
 295     c->m_queue_front = 0;
 296     c->m_queue_back = 0;
 297     return c;
 298 }
 299
 300 /* set database names. Take local databases (if set); otherwise
 301    take databases given in ZURL (if set); otherwise use Default */
 302 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 303                                  int *num)
 304 {
 305     char **databaseNames;
 306     const char *cp = ZOOM_options_get (options, "databaseName");
 307
 308     if (!cp || !*cp)
 309     {
 310         if (strncmp (con->host_port, "unix:", 5) == 0)
 311             cp = strchr(con->host_port+5, ':');
 312         else
 313             cp = strchr(con->host_port, '/');
 314         if (cp)
 315             cp++;
 316     }
 317     if (!cp)
 318         cp = "Default";
 319     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 320     return databaseNames;
 321 }
 322
 323 ZOOM_API(ZOOM_connection)
 324 ZOOM_connection_new (const char *host, int portnum)
 325 {
 326     ZOOM_connection c = ZOOM_connection_create (0);
 327
 328     ZOOM_connection_connect (c, host, portnum);
 329     return c;
 330 }
 331
 332 ZOOM_API(void)
 333 ZOOM_connection_connect(ZOOM_connection c,
 334                         const char *host, int portnum)
 335 {
 336     const char *val;
 337     ZOOM_task task;
 338
 339     initlog();
 340
 341     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 342             c, host, portnum);
 343
 344     if (c->cs)
 345     {
 346         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 347         c->reconnect_ok = 1;
 348         return;
 349     }
 350     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 351     xfree (c->proxy);
 352     val = ZOOM_options_get (c->options, "proxy");
 353     if (val && *val)
 354     {
 355         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 356         c->proxy = xstrdup (val);
 357     }
 358     else
 359         c->proxy = 0;
 360
 361     xfree (c->charset);
 362     val = ZOOM_options_get (c->options, "charset");
 363     if (val && *val)
 364     {
 365         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 366         c->charset = xstrdup (val);
 367     }
 368     else
 369         c->charset = 0;
 370
 371     xfree (c->lang);
 372     val = ZOOM_options_get (c->options, "lang");
 373     if (val && *val)
 374     {
 375         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 376         c->lang = xstrdup (val);
 377     }
 378     else
 379         c->lang = 0;
 380
 381     xfree (c->host_port);
 382     if (portnum)
 383     {
 384         char hostn[128];
 385         sprintf (hostn, "%.80s:%d", host, portnum);
 386         c->host_port = xstrdup(hostn);
 387     }
 388     else
 389         c->host_port = xstrdup(host);
 390
 391     ZOOM_options_set(c->options, "host", c->host_port);
 392
 393     val = ZOOM_options_get (c->options, "cookie");
 394     if (val && *val)
 395     {
 396         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 397         c->cookie_out = xstrdup (val);
 398     }
 399
 400     val = ZOOM_options_get (c->options, "clientIP");
 401     if (val && *val)
 402     {
 403         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 404                 c, val);
 405         c->client_IP = xstrdup (val);
 406     }
 407
 408     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 409     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 410
 411     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 412
 413     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 414
 415     if (!c->async)
 416     {
 417         while (ZOOM_event (1, &c))
 418             ;
 419     }
 420 }
 421
 422 ZOOM_API(ZOOM_query)
 423 ZOOM_query_create(void)
 424 {
 425     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 426
 427     yaz_log(log_details, "%p ZOOM_query_create", s);
 428     s->refcount = 1;
 429     s->z_query = 0;
 430     s->sort_spec = 0;
 431     s->odr = odr_createmem (ODR_ENCODE);
 432     s->query_string = 0;
 433
 434     return s;
 435 }
 436
 437 ZOOM_API(void)
 438 ZOOM_query_destroy(ZOOM_query s)
 439 {
 440     if (!s)
 441         return;
 442
 443     (s->refcount)--;
 444     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 445     if (s->refcount == 0)
 446     {
 447         odr_destroy (s->odr);
 448         xfree (s);
 449     }
 450 }
 451
 452 ZOOM_API(int)
 453 ZOOM_query_prefix(ZOOM_query s, const char *str)
 454 {
 455     s->query_string = odr_strdup(s->odr, str);
 456     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 457     s->z_query->which = Z_Query_type_1;
 458     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 459     if (!s->z_query->u.type_1)
 460     {
 461         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 462         s->z_query = 0;
 463         return -1;
 464     }
 465     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 466     return 0;
 467 }
 468
 469 ZOOM_API(int)
 470 ZOOM_query_cql(ZOOM_query s, const char *str)
 471 {
 472     Z_External *ext;
 473
 474     s->query_string = odr_strdup(s->odr, str);
 475
 476     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 477     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 478     ext->indirect_reference = 0;
 479     ext->descriptor = 0;
 480     ext->which = Z_External_CQL;
 481     ext->u.cql = s->query_string;
 482
 483     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 484     s->z_query->which = Z_Query_type_104;
 485     s->z_query->u.type_104 =  ext;
 486
 487     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 488
 489     return 0;
 490 }
 491
 492 ZOOM_API(int)
 493 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 494 {
 495     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 496     if (!s->sort_spec)
 497     {
 498         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 499                 s, criteria);
 500         return -1;
 501     }
 502     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 503     return 0;
 504 }
 505
 506 static zoom_ret do_write(ZOOM_connection c);
 507
 508 ZOOM_API(void)
 509 ZOOM_connection_destroy(ZOOM_connection c)
 510 {
 511     ZOOM_resultset r;
 512     if (!c)
 513         return;
 514     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 515     if (c->cs)
 516         cs_close (c->cs);
 517     for (r = c->resultsets; r; r = r->next)
 518         r->connection = 0;
 519
 520     xfree (c->buf_in);
 521     xfree (c->addinfo);
 522     xfree (c->diagset);
 523     odr_destroy (c->odr_in);
 524     odr_destroy (c->odr_out);
 525     ZOOM_options_destroy (c->options);
 526     ZOOM_connection_remove_tasks (c);
 527     xfree (c->host_port);
 528     xfree (c->path);
 529     xfree (c->proxy);
 530     xfree (c->charset);
 531     xfree (c->lang);
 532     xfree (c->cookie_out);
 533     xfree (c->cookie_in);
 534     xfree (c->client_IP);
 535     xfree (c);
 536 }
 537
 538 void ZOOM_resultset_addref (ZOOM_resultset r)
 539 {
 540     if (r)
 541     {
 542         (r->refcount)++;
 543         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 544                 r, r->refcount);
 545     }
 546 }
 547
 548 ZOOM_resultset ZOOM_resultset_create ()
 549 {
 550     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 551
 552     initlog();
 553
 554     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 555     r->refcount = 1;
 556     r->size = 0;
 557     r->odr = odr_createmem (ODR_ENCODE);
 558     r->start = 0;
 559     r->piggyback = 1;
 560     r->setname = 0;
 561     r->schema = 0;
 562     r->count = 0;
 563     r->step = 0;
 564     r->record_cache = 0;
 565     r->r_sort_spec = 0;
 566     r->query = 0;
 567     r->connection = 0;
 568     r->next = 0;
 569     return r;
 570 }
 571
 572 ZOOM_API(ZOOM_resultset)
 573 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 574 {
 575     ZOOM_resultset r;
 576     ZOOM_query s = ZOOM_query_create();
 577
 578     ZOOM_query_prefix (s, q);
 579
 580     r = ZOOM_connection_search (c, s);
 581     ZOOM_query_destroy (s);
 582     return r;
 583 }
 584
 585 ZOOM_API(ZOOM_resultset)
 586 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 587 {
 588     ZOOM_resultset r = ZOOM_resultset_create ();
 589     ZOOM_task task;
 590     const char *cp;
 591
 592     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 593     r->r_sort_spec = q->sort_spec;
 594     r->query = q;
 595
 596     r->options = ZOOM_options_create_with_parent(c->options);
 597
 598     r->start = ZOOM_options_get_int(r->options, "start", 0);
 599     r->count = ZOOM_options_get_int(r->options, "count", 0);
 600     {
 601         /* If "presentChunk" is defined use that; otherwise "step" */
 602         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 603         r->step = ZOOM_options_get_int(r->options,
 604                                        (cp != 0 ? "presentChunk": "step"), 0);
 605     }
 606     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 607     cp = ZOOM_options_get (r->options, "setname");
 608     if (cp)
 609         r->setname = xstrdup(cp);
 610     cp = ZOOM_options_get (r->options, "schema");
 611     if (cp)
 612         r->schema = xstrdup(cp);
 613
 614     r->connection = c;
 615
 616     r->next = c->resultsets;
 617     c->resultsets = r;
 618
 619     if (c->host_port && c->proto == PROTO_HTTP)
 620     {
 621         if (!c->cs)
 622         {
 623             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 624             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 625         }
 626         else
 627         {
 628             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 629             c->reconnect_ok = 1;
 630         }
 631     }
 632
 633     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 634     task->u.search.resultset = r;
 635     ZOOM_resultset_addref (r);
 636
 637     (q->refcount)++;
 638
 639     if (!c->async)
 640     {
 641         while (ZOOM_event (1, &c))
 642             ;
 643     }
 644     return r;
 645 }
 646
 647 ZOOM_API(void)
 648     ZOOM_resultset_sort(ZOOM_resultset r,
 649                         const char *sort_type, const char *sort_spec)
 650 {
 651     ZOOM_connection c = r->connection;
 652     ZOOM_task task;
 653
 654     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 655             r, r, sort_type, sort_spec);
 656     if (!c)
 657         return;
 658
 659     if (c->host_port && c->proto == PROTO_HTTP)
 660     {
 661         if (!c->cs)
 662         {
 663             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 664             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 665         }
 666         else
 667         {
 668             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 669                     r);
 670             c->reconnect_ok = 1;
 671         }
 672     }
 673
 674     ZOOM_resultset_cache_reset(r);
 675     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 676     task->u.sort.resultset = r;
 677     task->u.sort.q = ZOOM_query_create();
 678     ZOOM_query_sortby(task->u.sort.q, sort_spec);
 679
 680     ZOOM_resultset_addref (r);
 681
 682     if (!c->async)
 683     {
 684         while (ZOOM_event (1, &c))
 685             ;
 686     }
 687 }
 688
 689 ZOOM_API(void)
 690     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 691 {
 692     ZOOM_record_cache rc;
 693
 694     for (rc = r->record_cache; rc; rc = rc->next)
 695     {
 696         if (rc->rec.wrbuf_marc)
 697             wrbuf_free (rc->rec.wrbuf_marc, 1);
 698         if (rc->rec.wrbuf_iconv)
 699             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 700         if (rc->rec.wrbuf_opac)
 701             wrbuf_free (rc->rec.wrbuf_opac, 1);
 702     }
 703     r->record_cache = 0;
 704 }
 705
 706 ZOOM_API(void)
 707 ZOOM_resultset_destroy(ZOOM_resultset r)
 708 {
 709     if (!r)
 710         return;
 711     (r->refcount)--;
 712     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 713             r, r, r->refcount);
 714     if (r->refcount == 0)
 715     {
 716         ZOOM_resultset_cache_reset(r);
 717
 718         if (r->connection)
 719         {
 720             /* remove ourselves from the resultsets in connection */
 721             ZOOM_resultset *rp = &r->connection->resultsets;
 722             while (1)
 723             {
 724                 assert (*rp);   /* we must be in this list!! */
 725                 if (*rp == r)
 726                 {   /* OK, we're here - take us out of it */
 727                     *rp = (*rp)->next;
 728                     break;
 729                 }
 730                 rp = &(*rp)->next;
 731             }
 732         }
 733         ZOOM_query_destroy (r->query);
 734         ZOOM_options_destroy (r->options);
 735         odr_destroy (r->odr);
 736         xfree (r->setname);
 737         xfree (r->schema);
 738         xfree (r);
 739     }
 740 }
 741
 742 ZOOM_API(size_t)
 743 ZOOM_resultset_size (ZOOM_resultset r)
 744 {
 745     return r->size;
 746 }
 747
 748 static void do_close (ZOOM_connection c)
 749 {
 750     if (c->cs)
 751         cs_close(c->cs);
 752     c->cs = 0;
 753     c->mask = 0;
 754     c->state = STATE_IDLE;
 755 }
 756
 757 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 758                                      int force_sync, int start, int count)
 759 {
 760     ZOOM_task task;
 761     ZOOM_connection c;
 762     const char *cp;
 763
 764     if (!r)
 765         return;
 766     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 767             " count=%d", r, force_sync, start, count);
 768     c = r->connection;
 769     if (!c)
 770         return;
 771
 772     if (c->host_port && c->proto == PROTO_HTTP)
 773     {
 774         if (!c->cs)
 775         {
 776             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 777             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 778         }
 779         else
 780         {
 781             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 782                     "reconnect", r);
 783             c->reconnect_ok = 1;
 784         }
 785     }
 786     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 787     task->u.retrieve.resultset = r;
 788     task->u.retrieve.start = start;
 789     task->u.retrieve.count = count;
 790
 791     cp = ZOOM_options_get (r->options, "schema");
 792     if (cp)
 793     {
 794         if (!r->schema || strcmp(r->schema, cp))
 795         {
 796             xfree(r->schema);
 797             r->schema = xstrdup(cp);
 798         }
 799     }
 800
 801     ZOOM_resultset_addref (r);
 802
 803     if (!r->connection->async || force_sync)
 804         while (r->connection && ZOOM_event (1, &r->connection))
 805             ;
 806 }
 807
 808 ZOOM_API(void)
 809 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 810                         size_t start, size_t count)
 811 {
 812     int force_present = 0;
 813
 814     if (!r)
 815         return ;
 816     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%d count=%d",
 817             r, r, start, count);
 818     if (count && recs)
 819         force_present = 1;
 820     ZOOM_resultset_retrieve (r, force_present, start, count);
 821     if (force_present)
 822     {
 823         size_t i;
 824         for (i = 0; i< count; i++)
 825             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 826     }
 827 }
 828
 829 static void get_cert(ZOOM_connection c)
 830 {
 831     char *cert_buf;
 832     int cert_len;
 833
 834     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 835     {
 836         ZOOM_connection_option_setl(c, "sslPeerCert",
 837                                     cert_buf, cert_len);
 838         xfree(cert_buf);
 839     }
 840 }
 841
 842 static zoom_ret do_connect (ZOOM_connection c)
 843 {
 844     void *add;
 845     const char *effective_host;
 846
 847     if (c->proxy)
 848         effective_host = c->proxy;
 849     else
 850         effective_host = c->host_port;
 851
 852     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
 853
 854     if (c->cs)
 855         cs_close(c->cs);
 856     c->cs = cs_create_host (effective_host, 0, &add);
 857
 858     if (c->cs && c->cs->protocol == PROTO_HTTP)
 859     {
 860 #if HAVE_XML2
 861         const char *path = 0;
 862
 863         c->proto = PROTO_HTTP;
 864         cs_get_host_args(c->host_port, &path);
 865         xfree(c->path);
 866         c->path = (char*) xmalloc(strlen(path)+2);
 867         c->path[0] = '/';
 868         strcpy (c->path+1, path);
 869 #else
 870         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 871         do_close(c);
 872         return zoom_complete;
 873 #endif
 874     }
 875     if (c->cs)
 876     {
 877         int ret = cs_connect (c->cs, add);
 878         if (ret == 0)
 879         {
 880             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 881             ZOOM_connection_put_event(c, event);
 882             get_cert(c);
 883             if (c->proto == PROTO_Z3950)
 884                 ZOOM_connection_send_init(c);
 885             else
 886             {
 887                 /* no init request for SRW .. */
 888                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 889                 ZOOM_connection_remove_task (c);
 890                 c->mask = 0;
 891                 ZOOM_connection_exec_task (c);
 892             }
 893             c->state = STATE_ESTABLISHED;
 894             return zoom_pending;
 895         }
 896         else if (ret > 0)
 897         {
 898             c->state = STATE_CONNECTING;
 899             c->mask = ZOOM_SELECT_EXCEPT;
 900             if (c->cs->io_pending & CS_WANT_WRITE)
 901                 c->mask += ZOOM_SELECT_WRITE;
 902             if (c->cs->io_pending & CS_WANT_READ)
 903                 c->mask += ZOOM_SELECT_READ;
 904             return zoom_pending;
 905         }
 906     }
 907     c->state = STATE_IDLE;
 908     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
 909     return zoom_complete;
 910 }
 911
 912 int z3950_connection_socket(ZOOM_connection c)
 913 {
 914     if (c->cs)
 915         return cs_fileno(c->cs);
 916     return -1;
 917 }
 918
 919 int z3950_connection_mask(ZOOM_connection c)
 920 {
 921     if (c->cs)
 922         return c->mask;
 923     return 0;
 924 }
 925
 926 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 927 {
 928     int i;
 929     for (i = 0; i<200; i++)
 930     {
 931         size_t len;
 932         Z_OtherInformation **oi;
 933         char buf[80];
 934         const char *val;
 935         const char *cp;
 936         int oidval;
 937
 938         sprintf (buf, "otherInfo%d", i);
 939         val = ZOOM_options_get (c->options, buf);
 940         if (!val)
 941             break;
 942         cp = strchr(val, ':');
 943         if (!cp)
 944             continue;
 945         len = cp - val;
 946         if (len >= sizeof(buf))
 947             len = sizeof(buf)-1;
 948         memcpy (buf, val, len);
 949         buf[len] = '\0';
 950         oidval = oid_getvalbyname (buf);
 951         if (oidval == VAL_NONE)
 952             continue;
 953
 954         yaz_oi_APDU(a, &oi);
 955         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 956     }
 957 }
 958
 959 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 960 {
 961     assert (a);
 962     if (c->cookie_out)
 963     {
 964         Z_OtherInformation **oi;
 965         yaz_oi_APDU(a, &oi);
 966         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 967     }
 968     if (c->client_IP)
 969     {
 970         Z_OtherInformation **oi;
 971         yaz_oi_APDU(a, &oi);
 972         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 973     }
 974     otherInfo_attach (c, a, out);
 975     if (!z_APDU(out, &a, 0, 0))
 976     {
 977         FILE *outf = fopen("/tmp/apdu.txt", "a");
 978         if (a && outf)
 979         {
 980             ODR odr_pr = odr_createmem(ODR_PRINT);
 981             fprintf (outf, "a=%p\n", a);
 982             odr_setprint(odr_pr, outf);
 983             z_APDU(odr_pr, &a, 0, 0);
 984             odr_destroy(odr_pr);
 985         }
 986         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
 987         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
 988         odr_reset(out);
 989         return -1;
 990     }
 991     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
 992     return 0;
 993 }
 994
 995 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
 996 {
 997     ZOOM_Event event;
 998     assert (a);
 999     if (encode_APDU(c, a, c->odr_out))
1000         return zoom_complete;
1001     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1002     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1003     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1004     ZOOM_connection_put_event (c, event);
1005     odr_reset(c->odr_out);
1006     return do_write (c);
1007 }
1008
1009 /* returns 1 if PDU was sent OK (still pending )
1010            0 if PDU was not sent OK (nothing to wait for)
1011 */
1012
1013 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1014 {
1015     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1016     Z_InitRequest *ireq = apdu->u.initRequest;
1017     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1018         odr_malloc(c->odr_out, sizeof(*auth));
1019     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1020     const char *auth_userId = ZOOM_options_get (c->options, "user");
1021     const char *auth_password = ZOOM_options_get (c->options, "password");
1022     char *version;
1023
1024     /* support the pass for backwards compatibility */
1025     if (!auth_password)
1026         auth_password = ZOOM_options_get (c->options, "pass");
1027
1028     ODR_MASK_SET(ireq->options, Z_Options_search);
1029     ODR_MASK_SET(ireq->options, Z_Options_present);
1030     ODR_MASK_SET(ireq->options, Z_Options_scan);
1031     ODR_MASK_SET(ireq->options, Z_Options_sort);
1032     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1033     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1034
1035     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1036     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1037     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1038
1039     /* Index Data's Z39.50 Implementor Id is 81 */
1040     ireq->implementationId = odr_prepend(c->odr_out,
1041         ZOOM_options_get(c->options, "implementationId"),
1042         odr_prepend(c->odr_out, "81", ireq->implementationId));
1043
1044     ireq->implementationName = odr_prepend(c->odr_out,
1045         ZOOM_options_get(c->options, "implementationName"),
1046         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1047
1048     version = odr_strdup(c->odr_out, "$Revision: 1.48 $");
1049     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1050         version[strlen(version)-2] = '\0';
1051     ireq->implementationVersion = odr_prepend(c->odr_out,
1052         ZOOM_options_get(c->options, "implementationVersion"),
1053         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1054
1055     *ireq->maximumRecordSize =
1056         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1057     *ireq->preferredMessageSize =
1058         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1059
1060     if (auth_groupId || auth_password)
1061     {
1062         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1063         int i = 0;
1064         pass->groupId = 0;
1065         if (auth_groupId && *auth_groupId)
1066         {
1067             pass->groupId = (char *)
1068                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1069             strcpy(pass->groupId, auth_groupId);
1070             i++;
1071         }
1072         pass->userId = 0;
1073         if (auth_userId && *auth_userId)
1074         {
1075             pass->userId = (char *)
1076                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1077             strcpy(pass->userId, auth_userId);
1078             i++;
1079         }
1080         pass->password = 0;
1081         if (auth_password && *auth_password)
1082         {
1083             pass->password = (char *)
1084                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1085             strcpy(pass->password, auth_password);
1086             i++;
1087         }
1088         if (i)
1089         {
1090             auth->which = Z_IdAuthentication_idPass;
1091             auth->u.idPass = pass;
1092             ireq->idAuthentication = auth;
1093         }
1094     }
1095     else if (auth_userId)
1096     {
1097         auth->which = Z_IdAuthentication_open;
1098         auth->u.open = (char *)
1099             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1100         strcpy(auth->u.open, auth_userId);
1101         ireq->idAuthentication = auth;
1102     }
1103     if (c->proxy)
1104         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1105                                  VAL_PROXY, 1, c->host_port);
1106     if (c->charset || c->lang)
1107     {
1108         Z_OtherInformation **oi;
1109         Z_OtherInformationUnit *oi_unit;
1110
1111         yaz_oi_APDU(apdu, &oi);
1112
1113         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1114         {
1115             char **charsets_addresses = 0;
1116             char **langs_addresses = 0;
1117             int charsets_count = 0;
1118             int langs_count = 0;
1119
1120             if (c->charset)
1121                 nmem_strsplit_blank(c->odr_out->mem, c->charset,
1122                                     &charsets_addresses, &charsets_count);
1123             if (c->lang)
1124                 nmem_strsplit_blank(c->odr_out->mem, c->lang,
1125                                     &langs_addresses, &langs_count);
1126             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1127             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1128             oi_unit->information.externallyDefinedInfo =
1129                 yaz_set_proposal_charneg(c->odr_out,
1130                                          (const char **) charsets_addresses,
1131                                          charsets_count,
1132                                          (const char **) langs_addresses,
1133                                          langs_count,
1134                                          1);
1135         }
1136     }
1137     assert (apdu);
1138     return send_APDU (c, apdu);
1139 }
1140
1141 #if HAVE_XML2
1142 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1143 {
1144     char ctype[50];
1145     Z_SOAP_Handler h[2] = {
1146         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1147         {0, 0, 0}
1148     };
1149     ODR o = odr_createmem(ODR_ENCODE);
1150     int ret;
1151     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1152     Z_GDU *gdu;
1153     ZOOM_Event event;
1154
1155     gdu = z_get_HTTP_Request(c->odr_out);
1156     gdu->u.HTTP_Request->path = c->path;
1157
1158     if (c->host_port)
1159     {
1160         const char *cp0 = strstr(c->host_port, "://");
1161         const char *cp1 = 0;
1162         if (cp0)
1163             cp0 = cp0+3;
1164         else
1165             cp0 = c->host_port;
1166
1167         cp1 = strchr(cp0, '/');
1168         if (!cp1)
1169             cp1 = cp0+strlen(cp0);
1170
1171         if (cp0 && cp1)
1172         {
1173             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1174             memcpy (h, cp0, cp1 - cp0);
1175             h[cp1-cp0] = '\0';
1176             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1177                               "Host", h);
1178         }
1179     }
1180
1181     strcpy(ctype, "text/xml");
1182     if (c->charset && strlen(c->charset) < 20)
1183     {
1184         strcat(ctype, "; charset=");
1185         strcat(ctype, c->charset);
1186     }
1187     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1188                       "Content-Type", ctype);
1189     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1190                       "SOAPAction", "\"\"");
1191     p->which = Z_SOAP_generic;
1192     p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1193     p->u.generic->no = 0;
1194     p->u.generic->ns = 0;
1195     p->u.generic->p = sr;
1196     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1197
1198     ret = z_soap_codec_enc(o, &p,
1199                            &gdu->u.HTTP_Request->content_buf,
1200                            &gdu->u.HTTP_Request->content_len, h,
1201                            c->charset);
1202
1203     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1204         return zoom_complete;
1205     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1206
1207     odr_destroy(o);
1208
1209     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1210     ZOOM_connection_put_event (c, event);
1211     odr_reset(c->odr_out);
1212     return do_write (c);
1213 }
1214 #endif
1215
1216 #if HAVE_XML2
1217 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1218 {
1219     int i;
1220     ZOOM_resultset resultset = 0;
1221     Z_SRW_PDU *sr = 0;
1222     const char *recordPacking = 0;
1223
1224     if (c->error)                  /* don't continue on error */
1225         return zoom_complete;
1226     assert (c->tasks);
1227     if (c->tasks->which == ZOOM_TASK_SEARCH)
1228     {
1229         resultset = c->tasks->u.search.resultset;
1230         resultset->setname = xstrdup ("default");
1231         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1232     }
1233     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1234     {
1235         resultset = c->tasks->u.retrieve.resultset;
1236
1237         resultset->start = c->tasks->u.retrieve.start;
1238         resultset->count = c->tasks->u.retrieve.count;
1239
1240         if (resultset->start >= resultset->size)
1241             return zoom_complete;
1242         if (resultset->start + resultset->count > resultset->size)
1243             resultset->count = resultset->size - resultset->start;
1244
1245         for (i = 0; i<resultset->count; i++)
1246         {
1247             ZOOM_record rec =
1248                 record_cache_lookup (resultset, i + resultset->start);
1249             if (!rec)
1250                 break;
1251         }
1252         if (i == resultset->count)
1253             return zoom_complete;
1254     }
1255     assert(resultset->query);
1256
1257     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1258
1259     if (resultset->query->z_query->which == Z_Query_type_104
1260         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1261     {
1262
1263         sr->u.request->query_type = Z_SRW_query_type_cql;
1264         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1265     }
1266     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1267              resultset->query->z_query->u.type_1)
1268     {
1269         sr->u.request->query_type = Z_SRW_query_type_pqf;
1270         sr->u.request->query.pqf = resultset->query->query_string;
1271     }
1272     else
1273     {
1274         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1275         return zoom_complete;
1276     }
1277     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1278     sr->u.request->maximumRecords = odr_intdup (
1279         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1280     sr->u.request->recordSchema = resultset->schema;
1281
1282     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1283
1284     if (recordPacking)
1285         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1286
1287     return send_srw(c, sr);
1288 }
1289 #else
1290 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1291 {
1292     return zoom_complete;
1293 }
1294 #endif
1295
1296 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1297 {
1298     ZOOM_resultset r;
1299     int lslb, ssub, mspn;
1300     const char *syntax;
1301     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1302     Z_SearchRequest *search_req = apdu->u.searchRequest;
1303     const char *elementSetName;
1304     const char *smallSetElementSetName;
1305     const char *mediumSetElementSetName;
1306
1307     assert (c->tasks);
1308     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1309
1310     r = c->tasks->u.search.resultset;
1311
1312     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1313
1314     elementSetName =
1315         ZOOM_options_get (r->options, "elementSetName");
1316     smallSetElementSetName  =
1317         ZOOM_options_get (r->options, "smallSetElementSetName");
1318     mediumSetElementSetName =
1319         ZOOM_options_get (r->options, "mediumSetElementSetName");
1320
1321     if (!smallSetElementSetName)
1322         smallSetElementSetName = elementSetName;
1323
1324     if (!mediumSetElementSetName)
1325         mediumSetElementSetName = elementSetName;
1326
1327     assert (r);
1328     assert (r->query);
1329
1330     /* prepare query for the search request */
1331     search_req->query = r->query->z_query;
1332     if (!search_req->query)
1333     {
1334         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1335         return zoom_complete;
1336     }
1337
1338     search_req->databaseNames =
1339         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1340
1341     /* get syntax (no need to provide unless piggyback is in effect) */
1342     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1343
1344     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1345     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1346     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1347     if (lslb != -1 && ssub != -1 && mspn != -1)
1348     {
1349         /* So're a Z39.50 expert? Let's hope you don't do sort */
1350         *search_req->largeSetLowerBound = lslb;
1351         *search_req->smallSetUpperBound = ssub;
1352         *search_req->mediumSetPresentNumber = mspn;
1353     }
1354     else if (r->start == 0 && r->count > 0
1355              && r->piggyback && !r->r_sort_spec && !r->schema)
1356     {
1357         /* Regular piggyback - do it unless we're going to do sort */
1358         *search_req->largeSetLowerBound = 2000000000;
1359         *search_req->smallSetUpperBound = 1;
1360         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1361     }
1362     else
1363     {
1364         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1365         smallSetElementSetName = 0;
1366         mediumSetElementSetName = 0;
1367         syntax = 0;
1368     }
1369     if (smallSetElementSetName && *smallSetElementSetName)
1370     {
1371         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1372             odr_malloc (c->odr_out, sizeof(*esn));
1373
1374         esn->which = Z_ElementSetNames_generic;
1375         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1376         search_req->smallSetElementSetNames = esn;
1377     }
1378     if (mediumSetElementSetName && *mediumSetElementSetName)
1379     {
1380         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1381             odr_malloc (c->odr_out, sizeof(*esn));
1382
1383         esn->which = Z_ElementSetNames_generic;
1384         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1385         search_req->mediumSetElementSetNames = esn;
1386     }
1387     if (syntax)
1388         search_req->preferredRecordSyntax =
1389             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1390
1391     if (!r->setname)
1392     {
1393         if (c->support_named_resultsets)
1394         {
1395             char setname[14];
1396             int ord;
1397             /* find the lowest unused ordinal so that we re-use
1398                result sets on the server. */
1399             for (ord = 1; ; ord++)
1400             {
1401                 ZOOM_resultset rp;
1402                 sprintf (setname, "%d", ord);
1403                 for (rp = c->resultsets; rp; rp = rp->next)
1404                     if (rp->setname && !strcmp (rp->setname, setname))
1405                         break;
1406                 if (!rp)
1407                     break;
1408             }
1409             r->setname = xstrdup (setname);
1410             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1411                     "set %s", c, r->setname);
1412         }
1413         else
1414         {
1415             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1416                     "default set", c);
1417             r->setname = xstrdup ("default");
1418         }
1419         ZOOM_options_set (r->options, "setname", r->setname);
1420     }
1421     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1422     return send_APDU (c, apdu);
1423 }
1424
1425 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1426 {
1427     int oclass;
1428     char *addinfo = 0;
1429
1430     switch (r->which)
1431     {
1432     case Z_DefaultDiagFormat_v2Addinfo:
1433         addinfo = r->u.v2Addinfo;
1434         break;
1435     case Z_DefaultDiagFormat_v3Addinfo:
1436         addinfo = r->u.v3Addinfo;
1437         break;
1438     }
1439     xfree (c->addinfo);
1440     c->addinfo = 0;
1441     set_dset_error(c, *r->condition,
1442                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1443                    addinfo, 0);
1444 }
1445
1446 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1447 {
1448     if (p->which != Z_DiagRec_defaultFormat)
1449         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1450     else
1451         response_default_diag(c, p->u.defaultFormat);
1452 }
1453
1454 ZOOM_API(ZOOM_record)
1455 ZOOM_record_clone (ZOOM_record srec)
1456 {
1457     char *buf;
1458     int size;
1459     ODR odr_enc;
1460     ZOOM_record nrec;
1461
1462     odr_enc = odr_createmem(ODR_ENCODE);
1463     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1464         return 0;
1465     buf = odr_getbuf (odr_enc, &size, 0);
1466
1467     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1468     nrec->odr = odr_createmem(ODR_DECODE);
1469     nrec->wrbuf_marc = 0;
1470     nrec->wrbuf_iconv = 0;
1471     nrec->wrbuf_opac = 0;
1472     odr_setbuf (nrec->odr, buf, size, 0);
1473     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1474
1475     odr_destroy (odr_enc);
1476     return nrec;
1477 }
1478
1479 ZOOM_API(ZOOM_record)
1480 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1481 {
1482     return record_cache_lookup (s, pos);
1483 }
1484
1485 ZOOM_API(ZOOM_record)
1486 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1487 {
1488     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1489
1490     if (!rec)
1491     {
1492         ZOOM_resultset_retrieve (r, 1, pos, 1);
1493         rec = ZOOM_resultset_record_immediate (r, pos);
1494     }
1495     return rec;
1496 }
1497
1498 ZOOM_API(void)
1499 ZOOM_record_destroy (ZOOM_record rec)
1500 {
1501     if (!rec)
1502         return;
1503     if (rec->wrbuf_marc)
1504         wrbuf_free (rec->wrbuf_marc, 1);
1505     if (rec->wrbuf_iconv)
1506         wrbuf_free (rec->wrbuf_iconv, 1);
1507     if (rec->wrbuf_opac)
1508         wrbuf_free (rec->wrbuf_opac, 1);
1509     odr_destroy (rec->odr);
1510     xfree (rec);
1511 }
1512
1513 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1514                                      int *len,
1515                                      const char *buf, int sz,
1516                                      const char *record_charset)
1517 {
1518     char to[40];
1519     char from[40];
1520     yaz_iconv_t cd = 0;
1521     yaz_marc_t mt = yaz_marc_create();
1522
1523     *from = '\0';
1524     strcpy(to, "UTF-8");
1525     if (record_charset && *record_charset)
1526     {
1527         /* Use "from,to" or just "from" */
1528         const char *cp = strchr(record_charset, ',');
1529         int clen = strlen(record_charset);
1530         if (cp && cp[1])
1531         {
1532             strncpy( to, cp+1, sizeof(to)-1);
1533             to[sizeof(to)-1] = '\0';
1534             clen = cp - record_charset;
1535         }
1536         if (clen > sizeof(from)-1)
1537             clen = sizeof(from)-1;
1538
1539         if (clen)
1540             strncpy(from, record_charset, clen);
1541         from[clen] = '\0';
1542     }
1543
1544     if (*from && *to)
1545     {
1546         cd = yaz_iconv_open(to, from);
1547         yaz_marc_iconv(mt, cd);
1548     }
1549
1550     yaz_marc_xml(mt, marc_type);
1551     if (!rec->wrbuf_marc)
1552         rec->wrbuf_marc = wrbuf_alloc();
1553     wrbuf_rewind (rec->wrbuf_marc);
1554     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1555     {
1556         yaz_marc_destroy(mt);
1557         if (cd)
1558             yaz_iconv_close(cd);
1559         if (len)
1560             *len = wrbuf_len(rec->wrbuf_marc);
1561         return wrbuf_buf(rec->wrbuf_marc);
1562     }
1563     yaz_marc_destroy(mt);
1564     if (cd)
1565         yaz_iconv_close(cd);
1566     return 0;
1567 }
1568
1569 static const char *record_iconv_return(ZOOM_record rec, int *len,
1570                                        const char *buf, int sz,
1571                                        const char *record_charset)
1572 {
1573     char to[40];
1574     char from[40];
1575     yaz_iconv_t cd = 0;
1576
1577     *from = '\0';
1578     strcpy(to, "UTF-8");
1579     if (record_charset && *record_charset)
1580     {
1581         /* Use "from,to" or just "from" */
1582         const char *cp = strchr(record_charset, ',');
1583         int clen = strlen(record_charset);
1584         if (cp && cp[1])
1585         {
1586             strncpy( to, cp+1, sizeof(to)-1);
1587             to[sizeof(to)-1] = '\0';
1588             clen = cp - record_charset;
1589         }
1590         if (clen > sizeof(from)-1)
1591             clen = sizeof(from)-1;
1592
1593         if (clen)
1594             strncpy(from, record_charset, clen);
1595         from[clen] = '\0';
1596     }
1597
1598     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1599     {
1600         char outbuf[12];
1601         size_t inbytesleft = sz;
1602         const char *inp = buf;
1603
1604         if (!rec->wrbuf_iconv)
1605             rec->wrbuf_iconv = wrbuf_alloc();
1606
1607         wrbuf_rewind(rec->wrbuf_iconv);
1608
1609         while (inbytesleft)
1610         {
1611             size_t outbytesleft = sizeof(outbuf);
1612             char *outp = outbuf;
1613             size_t r = yaz_iconv (cd, (char**) &inp,
1614                                   &inbytesleft,
1615                                   &outp, &outbytesleft);
1616             if (r == (size_t) (-1))
1617             {
1618                 int e = yaz_iconv_error(cd);
1619                 if (e != YAZ_ICONV_E2BIG)
1620                     break;
1621             }
1622             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1623         }
1624         wrbuf_puts(rec->wrbuf_iconv, "");
1625         buf = wrbuf_buf(rec->wrbuf_iconv);
1626         sz = wrbuf_len(rec->wrbuf_iconv);
1627         yaz_iconv_close(cd);
1628     }
1629     if (len)
1630         *len = sz;
1631     return buf;
1632 }
1633
1634 ZOOM_API(const char *)
1635 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1636 {
1637     char type[40];
1638     char charset[40];
1639     char xpath[512];
1640     const char *cp;
1641     int i;
1642     Z_NamePlusRecord *npr;
1643
1644     if (len)
1645         *len = 0; /* default return */
1646
1647     if (!rec)
1648         return 0;
1649     npr = rec->npr;
1650     if (!npr)
1651         return 0;
1652
1653     cp = type_spec;
1654     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1655     {
1656         if (cp[i] == ';' || cp[i] == ' ')
1657             break;
1658         type[i] = cp[i];
1659     }
1660     type[i] = '\0';
1661     charset[0] = '\0';
1662     while (type_spec[i] == ';')
1663     {
1664         i++;
1665         while (type_spec[i] == ' ')
1666             i++;
1667         if (!strncmp(type_spec+i, "charset=", 8))
1668         {
1669             int j = 0;
1670             i = i + 8; /* skip charset= */
1671             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1672             {
1673                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1674                     break;
1675                 charset[j] = cp[i];
1676             }
1677             charset[j] = '\0';
1678         }
1679         else if (!strncmp(type_spec+i, "xpath=", 6))
1680         {
1681             int j = 0;
1682             i = i + 6;
1683             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1684                 xpath[j] = cp[i];
1685             xpath[j] = '\0';
1686         }
1687         while (type_spec[i] == ' ')
1688             i++;
1689     }
1690     if (!strcmp (type, "database"))
1691     {
1692         if (len)
1693             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1694         return npr->databaseName;
1695     }
1696     else if (!strcmp (type, "syntax"))
1697     {
1698         const char *desc = 0;
1699         if (npr->which == Z_NamePlusRecord_databaseRecord)
1700         {
1701             Z_External *r = (Z_External *) npr->u.databaseRecord;
1702             oident *ent = oid_getentbyoid(r->direct_reference);
1703             if (ent)
1704                 desc = ent->desc;
1705         }
1706         if (!desc)
1707             desc = "none";
1708         if (len)
1709             *len = strlen(desc);
1710         return desc;
1711     }
1712     if (npr->which != Z_NamePlusRecord_databaseRecord)
1713         return 0;
1714
1715     /* from now on - we have a database record .. */
1716     if (!strcmp (type, "render"))
1717     {
1718         Z_External *r = (Z_External *) npr->u.databaseRecord;
1719         oident *ent = oid_getentbyoid(r->direct_reference);
1720
1721         /* render bibliographic record .. */
1722         if (r->which == Z_External_OPAC)
1723         {
1724             r = r->u.opac->bibliographicRecord;
1725             if (!r)
1726                 return 0;
1727             ent = oid_getentbyoid(r->direct_reference);
1728         }
1729         if (r->which == Z_External_sutrs)
1730             return record_iconv_return(rec, len,
1731                                        (char*) r->u.sutrs->buf,
1732                                        r->u.sutrs->len,
1733                                        charset);
1734         else if (r->which == Z_External_octet)
1735         {
1736             const char *ret_buf;
1737             switch (ent->value)
1738             {
1739             case VAL_SOIF:
1740             case VAL_HTML:
1741             case VAL_SUTRS:
1742                 break;
1743             case VAL_TEXT_XML:
1744             case VAL_APPLICATION_XML:
1745                 break;
1746             default:
1747                 ret_buf = marc_iconv_return(
1748                     rec, YAZ_MARC_LINE, len,
1749                     (const char *) r->u.octet_aligned->buf,
1750                     r->u.octet_aligned->len,
1751                     charset);
1752                 if (ret_buf)
1753                     return ret_buf;
1754             }
1755             return record_iconv_return(rec, len,
1756                                        (const char *) r->u.octet_aligned->buf,
1757                                        r->u.octet_aligned->len,
1758                                        charset);
1759         }
1760         else if (r->which == Z_External_grs1)
1761         {
1762             if (!rec->wrbuf_marc)
1763                 rec->wrbuf_marc = wrbuf_alloc();
1764             wrbuf_rewind (rec->wrbuf_marc);
1765             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1766             return record_iconv_return(rec, len,
1767                                        wrbuf_buf(rec->wrbuf_marc),
1768                                        wrbuf_len(rec->wrbuf_marc),
1769                                        charset);
1770         }
1771         return 0;
1772     }
1773     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1774     {
1775         Z_External *r = (Z_External *) npr->u.databaseRecord;
1776         oident *ent = oid_getentbyoid(r->direct_reference);
1777
1778         /* render bibliographic record .. */
1779         if (r->which == Z_External_OPAC)
1780         {
1781             r = r->u.opac->bibliographicRecord;
1782             if (!r)
1783                 return 0;
1784             ent = oid_getentbyoid(r->direct_reference);
1785         }
1786
1787         if (r->which == Z_External_sutrs)
1788             return record_iconv_return(rec, len,
1789                                        (const char *) r->u.sutrs->buf,
1790                                        r->u.sutrs->len,
1791                                        charset);
1792         else if (r->which == Z_External_octet)
1793         {
1794             const char *ret_buf;
1795             int marc_decode_type = YAZ_MARC_MARCXML;
1796
1797             if (!strcmp(type, "oai"))
1798                 marc_decode_type = YAZ_MARC_OAIMARC;
1799             switch (ent->value)
1800             {
1801             case VAL_SOIF:
1802             case VAL_HTML:
1803             case VAL_SUTRS:
1804                 break;
1805             case VAL_TEXT_XML:
1806             case VAL_APPLICATION_XML:
1807                 break;
1808             default:
1809                 ret_buf = marc_iconv_return(
1810                     rec, marc_decode_type, len,
1811                     (const char *) r->u.octet_aligned->buf,
1812                     r->u.octet_aligned->len,
1813                     charset);
1814                 if (ret_buf)
1815                     return ret_buf;
1816             }
1817             return record_iconv_return(rec, len,
1818                                        (const char *) r->u.octet_aligned->buf,
1819                                        r->u.octet_aligned->len,
1820                                        charset);
1821         }
1822         else if (r->which == Z_External_grs1)
1823         {
1824             if (len) *len = 5;
1825             return "GRS-1";
1826         }
1827         return 0;
1828     }
1829     else if (!strcmp (type, "raw"))
1830     {
1831         Z_External *r = (Z_External *) npr->u.databaseRecord;
1832
1833         if (r->which == Z_External_sutrs)
1834         {
1835             if (len) *len = r->u.sutrs->len;
1836             return (const char *) r->u.sutrs->buf;
1837         }
1838         else if (r->which == Z_External_octet)
1839         {
1840             if (len) *len = r->u.octet_aligned->len;
1841             return (const char *) r->u.octet_aligned->buf;
1842         }
1843         else /* grs-1, explain, OPAC, ... */
1844         {
1845             if (len) *len = -1;
1846             return (const char *) npr->u.databaseRecord;
1847         }
1848         return 0;
1849     }
1850     else if (!strcmp (type, "ext"))
1851     {
1852         if (len) *len = -1;
1853         return (const char *) npr->u.databaseRecord;
1854     }
1855     else if (!strcmp (type, "opac"))
1856
1857     {
1858         Z_External *r = (Z_External *) npr->u.databaseRecord;
1859         if (r->which == Z_External_OPAC)
1860         {
1861             if (!rec->wrbuf_opac)
1862                 rec->wrbuf_opac = wrbuf_alloc();
1863             wrbuf_rewind (rec->wrbuf_opac);
1864             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1865             return record_iconv_return(rec, len,
1866                                        wrbuf_buf(rec->wrbuf_opac),
1867                                        wrbuf_len(rec->wrbuf_opac),
1868                                        charset);
1869         }
1870     }
1871     return 0;
1872 }
1873
1874 static int strcmp_null(const char *v1, const char *v2)
1875 {
1876     if (!v1 && !v2)
1877         return 0;
1878     if (!v1 || !v2)
1879         return -1;
1880     return strcmp(v1, v2);
1881 }
1882
1883 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1884                               int pos)
1885 {
1886     ZOOM_record_cache rc;
1887     const char *elementSetName =
1888         ZOOM_resultset_option_get (r, "elementSetName");
1889     const char *syntax =
1890         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1891
1892     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1893     ZOOM_connection_put_event(r->connection, event);
1894
1895     for (rc = r->record_cache; rc; rc = rc->next)
1896     {
1897         if (pos == rc->pos)
1898         {
1899             if (strcmp_null(r->schema, rc->schema))
1900                 continue;
1901             if (strcmp_null(elementSetName,rc->elementSetName))
1902                 continue;
1903             if (strcmp_null(syntax, rc->syntax))
1904                 continue;
1905             /* not destroying rc->npr (it's handled by nmem )*/
1906             rc->rec.npr = npr;
1907             /* keeping wrbuf_marc too */
1908             return;
1909         }
1910     }
1911     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1912     rc->rec.npr = npr;
1913     rc->rec.odr = 0;
1914     rc->rec.wrbuf_marc = 0;
1915     rc->rec.wrbuf_iconv = 0;
1916     rc->rec.wrbuf_opac = 0;
1917     if (elementSetName)
1918         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1919     else
1920         rc->elementSetName = 0;
1921
1922     if (syntax)
1923         rc->syntax = odr_strdup (r->odr, syntax);
1924     else
1925         rc->syntax = 0;
1926
1927     if (r->schema)
1928         rc->schema = odr_strdup (r->odr, r->schema);
1929     else
1930         rc->schema = 0;
1931
1932     rc->pos = pos;
1933     rc->next = r->record_cache;
1934     r->record_cache = rc;
1935 }
1936
1937 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1938 {
1939     ZOOM_record_cache rc;
1940     const char *elementSetName =
1941         ZOOM_resultset_option_get (r, "elementSetName");
1942     const char *syntax =
1943         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1944
1945     for (rc = r->record_cache; rc; rc = rc->next)
1946     {
1947         if (pos == rc->pos)
1948         {
1949             if (strcmp_null(r->schema, rc->schema))
1950                 continue;
1951             if (strcmp_null(elementSetName,rc->elementSetName))
1952                 continue;
1953             if (strcmp_null(syntax, rc->syntax))
1954                 continue;
1955             return &rc->rec;
1956         }
1957     }
1958     return 0;
1959 }
1960
1961 static void handle_records (ZOOM_connection c, Z_Records *sr,
1962                             int present_phase)
1963 {
1964     ZOOM_resultset resultset;
1965
1966     if (!c->tasks)
1967         return ;
1968     switch (c->tasks->which)
1969     {
1970     case ZOOM_TASK_SEARCH:
1971         resultset = c->tasks->u.search.resultset;
1972         break;
1973     case ZOOM_TASK_RETRIEVE:
1974         resultset = c->tasks->u.retrieve.resultset;
1975         break;
1976     default:
1977         return;
1978     }
1979     if (sr && sr->which == Z_Records_NSD)
1980         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
1981     else if (sr && sr->which == Z_Records_multipleNSD)
1982     {
1983         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1984             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1985         else
1986             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1987     }
1988     else
1989     {
1990         if (resultset->count + resultset->start > resultset->size)
1991             resultset->count = resultset->size - resultset->start;
1992         if (resultset->count < 0)
1993             resultset->count = 0;
1994         if (sr && sr->which == Z_Records_DBOSD)
1995         {
1996             int i;
1997             NMEM nmem = odr_extract_mem (c->odr_in);
1998             Z_NamePlusRecordList *p =
1999                 sr->u.databaseOrSurDiagnostics;
2000             for (i = 0; i<p->num_records; i++)
2001             {
2002                 record_cache_add (resultset, p->records[i],
2003                                   i+ resultset->start);
2004             }
2005             /* transfer our response to search_nmem .. we need it later */
2006             nmem_transfer (resultset->odr->mem, nmem);
2007             nmem_destroy (nmem);
2008             if (present_phase && p->num_records == 0)
2009             {
2010                 /* present response and we didn't get any records! */
2011                 Z_NamePlusRecord *myrec =
2012                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2013                 record_cache_add(resultset, myrec, resultset->start);
2014             }
2015         }
2016         else if (present_phase)
2017         {
2018             /* present response and we didn't get any records! */
2019             Z_NamePlusRecord *myrec =
2020                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2021             record_cache_add(resultset, myrec, resultset->start);
2022         }
2023     }
2024 }
2025
2026 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2027 {
2028     handle_records (c, pr->records, 1);
2029 }
2030
2031 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2032                                        Z_Term *term)
2033 {
2034     switch (term->which)
2035     {
2036     case Z_Term_general:
2037         ZOOM_options_setl(opt, name,
2038                           term->u.general->buf, term->u.general->len);
2039         break;
2040     case Z_Term_characterString:
2041         ZOOM_options_set(opt, name, term->u.characterString);
2042         break;
2043     case Z_Term_numeric:
2044         ZOOM_options_set_int(opt, name, *term->u.numeric);
2045         break;
2046     }
2047 }
2048
2049 static void handle_queryExpression(ZOOM_options opt, const char *name,
2050                                    Z_QueryExpression *exp)
2051 {
2052     char opt_name[80];
2053
2054     switch (exp->which)
2055     {
2056     case Z_QueryExpression_term:
2057         if (exp->u.term && exp->u.term->queryTerm)
2058         {
2059             sprintf(opt_name, "%s.term", name);
2060             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2061         }
2062         break;
2063     case Z_QueryExpression_query:
2064         break;
2065     }
2066 }
2067
2068 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2069                                 Z_OtherInformation *o)
2070 {
2071     int i;
2072     for (i = 0; o && i < o->num_elements; i++)
2073     {
2074         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2075         {
2076             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2077
2078             if (ext->which == Z_External_searchResult1)
2079             {
2080                 int j;
2081                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2082
2083                 if (sr->num)
2084                     ZOOM_options_set_int(
2085                         resultset->options, "SearchResult.size", sr->num);
2086
2087                 for (j = 0; j < sr->num; j++)
2088                 {
2089                     Z_SearchInfoReport_s *ent =
2090                         ext->u.searchResult1->elements[j];
2091                     char pref[80];
2092
2093                     sprintf(pref, "SearchResult.%d", j);
2094
2095                     if (ent->subqueryId)
2096                     {
2097                         char opt_name[80];
2098                         sprintf(opt_name, "%s.subqueryId", pref);
2099                         ZOOM_options_set(resultset->options, opt_name,
2100                                          ent->subqueryId);
2101                     }
2102                     if (ent->subqueryExpression)
2103                     {
2104                         char opt_name[80];
2105                         sprintf(opt_name, "%s.subquery", pref);
2106                         handle_queryExpression(resultset->options, opt_name,
2107                                                ent->subqueryExpression);
2108                     }
2109                     if (ent->subqueryInterpretation)
2110                     {
2111                         char opt_name[80];
2112                         sprintf(opt_name, "%s.interpretation", pref);
2113                         handle_queryExpression(resultset->options, opt_name,
2114                                                ent->subqueryInterpretation);
2115                     }
2116                     if (ent->subqueryRecommendation)
2117                     {
2118                         char opt_name[80];
2119                         sprintf(opt_name, "%s.recommendation", pref);
2120                         handle_queryExpression(resultset->options, opt_name,
2121                                                ent->subqueryRecommendation);
2122                     }
2123                     if (ent->subqueryCount)
2124                     {
2125                         char opt_name[80];
2126                         sprintf(opt_name, "%s.subqueryCount", pref);
2127                         ZOOM_options_set_int(resultset->options, opt_name,
2128                                              *ent->subqueryCount);
2129                     }
2130                 }
2131             }
2132         }
2133     }
2134 }
2135
2136 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2137 {
2138     ZOOM_resultset resultset;
2139     ZOOM_Event event;
2140
2141     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2142         return ;
2143
2144     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2145     ZOOM_connection_put_event(c, event);
2146
2147     resultset = c->tasks->u.search.resultset;
2148
2149     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2150
2151     resultset->size = *sr->resultCount;
2152     handle_records (c, sr->records, 0);
2153 }
2154
2155 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2156 {
2157     if (res->diagnostics && res->num_diagnostics > 0)
2158         response_diag (c, res->diagnostics[0]);
2159 }
2160
2161 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2162 {
2163     NMEM nmem = odr_extract_mem (c->odr_in);
2164     ZOOM_scanset scan;
2165
2166     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2167         return 0;
2168     scan = c->tasks->u.scan.scan;
2169
2170     if (res->entries && res->entries->nonsurrogateDiagnostics)
2171         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2172     scan->scan_response = res;
2173     nmem_transfer (scan->odr->mem, nmem);
2174     if (res->stepSize)
2175         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2176     if (res->positionOfTerm)
2177         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2178     if (res->scanStatus)
2179         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2180     if (res->numberOfEntriesReturned)
2181         ZOOM_options_set_int (scan->options, "number",
2182                               *res->numberOfEntriesReturned);
2183     nmem_destroy (nmem);
2184     return 1;
2185 }
2186
2187 static zoom_ret send_sort (ZOOM_connection c,
2188                            ZOOM_resultset resultset)
2189 {
2190     if (c->error)
2191         resultset->r_sort_spec = 0;
2192     if (resultset->r_sort_spec)
2193     {
2194         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2195         Z_SortRequest *req = apdu->u.sortRequest;
2196
2197         req->num_inputResultSetNames = 1;
2198         req->inputResultSetNames = (Z_InternationalString **)
2199             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2200         req->inputResultSetNames[0] =
2201             odr_strdup (c->odr_out, resultset->setname);
2202         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2203         req->sortSequence = resultset->r_sort_spec;
2204         resultset->r_sort_spec = 0;
2205         return send_APDU (c, apdu);
2206     }
2207     return zoom_complete;
2208 }
2209
2210 static zoom_ret send_present(ZOOM_connection c)
2211 {
2212     Z_APDU *apdu = 0;
2213     Z_PresentRequest *req = 0;
2214     int i = 0;
2215     const char *syntax = 0;
2216     const char *elementSetName = 0;
2217     ZOOM_resultset  resultset;
2218
2219     if (!c->tasks)
2220     {
2221         yaz_log(log_details, "%p send_present no tasks", c);
2222         return zoom_complete;
2223     }
2224     switch (c->tasks->which)
2225     {
2226     case ZOOM_TASK_SEARCH:
2227         resultset = c->tasks->u.search.resultset;
2228         break;
2229     case ZOOM_TASK_RETRIEVE:
2230         resultset = c->tasks->u.retrieve.resultset;
2231         resultset->start = c->tasks->u.retrieve.start;
2232         resultset->count = c->tasks->u.retrieve.count;
2233
2234         if (resultset->start >= resultset->size)
2235         {
2236             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2237                     c, resultset->start, resultset->size);
2238             return zoom_complete;
2239         }
2240         if (resultset->start + resultset->count > resultset->size)
2241             resultset->count = resultset->size - resultset->start;
2242         break;
2243     default:
2244         return zoom_complete;
2245     }
2246     yaz_log(log_details, "%p send_present start=%d count=%d",
2247             c, resultset->start, resultset->count);
2248
2249     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2250     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2251
2252     if (c->error)                  /* don't continue on error */
2253         return zoom_complete;
2254     if (resultset->start < 0)
2255         return zoom_complete;
2256     for (i = 0; i<resultset->count; i++)
2257     {
2258         ZOOM_record rec =
2259             record_cache_lookup (resultset, i + resultset->start);
2260         if (!rec)
2261             break;
2262     }
2263     if (i == resultset->count)
2264     {
2265         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2266         return zoom_complete;
2267     }
2268
2269     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2270     req = apdu->u.presentRequest;
2271
2272     resultset->start += i;
2273     resultset->count -= i;
2274
2275     if (i)
2276         yaz_log(log_details, "%p send_present skip=%d", c, i);
2277
2278     *req->resultSetStartPoint = resultset->start + 1;
2279     *req->numberOfRecordsRequested = resultset->step>0 ?
2280         resultset->step : resultset->count;
2281     assert (*req->numberOfRecordsRequested > 0);
2282
2283
2284     if (syntax && *syntax)
2285         req->preferredRecordSyntax =
2286             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2287
2288     if (resultset->schema && *resultset->schema)
2289     {
2290         Z_RecordComposition *compo = (Z_RecordComposition *)
2291             odr_malloc (c->odr_out, sizeof(*compo));
2292
2293         req->recordComposition = compo;
2294         compo->which = Z_RecordComp_complex;
2295         compo->u.complex = (Z_CompSpec *)
2296             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2297         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2298             odr_malloc(c->odr_out, sizeof(bool_t));
2299         *compo->u.complex->selectAlternativeSyntax = 0;
2300
2301         compo->u.complex->generic = (Z_Specification *)
2302             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2303
2304         compo->u.complex->generic->which = Z_Schema_oid;
2305         compo->u.complex->generic->schema.oid = (Odr_oid *)
2306             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2307
2308         if (!compo->u.complex->generic->schema.oid)
2309         {
2310             /* OID wasn't a schema! Try record syntax instead. */
2311
2312             compo->u.complex->generic->schema.oid = (Odr_oid *)
2313                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2314         }
2315         if (elementSetName && *elementSetName)
2316         {
2317             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2318                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2319             compo->u.complex->generic->elementSpec->which =
2320                 Z_ElementSpec_elementSetName;
2321             compo->u.complex->generic->elementSpec->u.elementSetName =
2322                 odr_strdup (c->odr_out, elementSetName);
2323         }
2324         else
2325             compo->u.complex->generic->elementSpec = 0;
2326         compo->u.complex->num_dbSpecific = 0;
2327         compo->u.complex->dbSpecific = 0;
2328         compo->u.complex->num_recordSyntax = 0;
2329         compo->u.complex->recordSyntax = 0;
2330     }
2331     else if (elementSetName && *elementSetName)
2332     {
2333         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2334             odr_malloc (c->odr_out, sizeof(*esn));
2335         Z_RecordComposition *compo = (Z_RecordComposition *)
2336             odr_malloc (c->odr_out, sizeof(*compo));
2337
2338         esn->which = Z_ElementSetNames_generic;
2339         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2340         compo->which = Z_RecordComp_simple;
2341         compo->u.simple = esn;
2342         req->recordComposition = compo;
2343     }
2344     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2345     return send_APDU (c, apdu);
2346 }
2347
2348 ZOOM_API(ZOOM_scanset)
2349 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2350 {
2351     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2352
2353     scan->connection = c;
2354     scan->odr = odr_createmem (ODR_DECODE);
2355     scan->options = ZOOM_options_create_with_parent (c->options);
2356     scan->refcount = 1;
2357     scan->scan_response = 0;
2358
2359     if ((scan->termListAndStartPoint =
2360          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2361                       start)))
2362     {
2363         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2364         task->u.scan.scan = scan;
2365
2366         (scan->refcount)++;
2367         if (!c->async)
2368         {
2369             while (ZOOM_event (1, &c))
2370                 ;
2371         }
2372     }
2373     return scan;
2374 }
2375
2376 ZOOM_API(void)
2377 ZOOM_scanset_destroy (ZOOM_scanset scan)
2378 {
2379     if (!scan)
2380         return;
2381     (scan->refcount)--;
2382     if (scan->refcount == 0)
2383     {
2384         odr_destroy (scan->odr);
2385
2386         ZOOM_options_destroy (scan->options);
2387         xfree (scan);
2388     }
2389 }
2390
2391 static zoom_ret send_package (ZOOM_connection c)
2392 {
2393     ZOOM_Event event;
2394
2395     yaz_log(log_details, "%p send_package", c);
2396     if (!c->tasks)
2397         return zoom_complete;
2398     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2399
2400     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2401     ZOOM_connection_put_event (c, event);
2402
2403     return do_write_ex (c, c->tasks->u.package->buf_out,
2404                         c->tasks->u.package->len_out);
2405 }
2406
2407 static zoom_ret send_scan (ZOOM_connection c)
2408 {
2409     ZOOM_scanset scan;
2410     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2411     Z_ScanRequest *req = apdu->u.scanRequest;
2412
2413     yaz_log(log_details, "%p send_scan", c);
2414     if (!c->tasks)
2415         return zoom_complete;
2416     assert (c->tasks->which == ZOOM_TASK_SCAN);
2417     scan = c->tasks->u.scan.scan;
2418
2419     req->termListAndStartPoint = scan->termListAndStartPoint;
2420     req->attributeSet = scan->attributeSet;
2421
2422     *req->numberOfTermsRequested =
2423         ZOOM_options_get_int(scan->options, "number", 10);
2424
2425     req->preferredPositionInResponse =
2426         odr_intdup (c->odr_out,
2427                     ZOOM_options_get_int(scan->options, "position", 1));
2428
2429     req->stepSize =
2430         odr_intdup (c->odr_out,
2431                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2432
2433     req->databaseNames = set_DatabaseNames (c, scan->options,
2434                                             &req->num_databaseNames);
2435
2436     return send_APDU (c, apdu);
2437 }
2438
2439 ZOOM_API(size_t)
2440 ZOOM_scanset_size (ZOOM_scanset scan)
2441 {
2442     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2443         return 0;
2444     return scan->scan_response->entries->num_entries;
2445 }
2446
2447 ZOOM_API(const char *)
2448 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2449                    int *occ, int *len)
2450 {
2451     const char *term = 0;
2452     size_t noent = ZOOM_scanset_size (scan);
2453     Z_ScanResponse *res = scan->scan_response;
2454
2455     *len = 0;
2456     *occ = 0;
2457     if (pos >= noent)
2458         return 0;
2459     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2460     {
2461         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2462
2463         if (t->term->which == Z_Term_general)
2464         {
2465             term = (const char *) t->term->u.general->buf;
2466             *len = t->term->u.general->len;
2467         }
2468         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2469     }
2470     return term;
2471 }
2472
2473 ZOOM_API(const char *)
2474 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2475                            int *occ, int *len)
2476 {
2477     const char *term = 0;
2478     size_t noent = ZOOM_scanset_size (scan);
2479     Z_ScanResponse *res = scan->scan_response;
2480
2481     *len = 0;
2482     *occ = 0;
2483     if (pos >= noent)
2484         return 0;
2485     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2486     {
2487         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2488
2489         if (t->displayTerm)
2490         {
2491             term = t->displayTerm;
2492             *len = strlen(term);
2493         }
2494         else if (t->term->which == Z_Term_general)
2495         {
2496             term = (const char *) t->term->u.general->buf;
2497             *len = t->term->u.general->len;
2498         }
2499         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2500     }
2501     return term;
2502 }
2503
2504 ZOOM_API(const char *)
2505 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2506 {
2507     return ZOOM_options_get (scan->options, key);
2508 }
2509
2510 ZOOM_API(void)
2511 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2512                               const char *val)
2513 {
2514     ZOOM_options_set (scan->options, key, val);
2515 }
2516
2517 static Z_APDU *create_es_package (ZOOM_package p, int type)
2518 {
2519     const char *str;
2520     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2521     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2522
2523     *req->function = Z_ExtendedServicesRequest_create;
2524
2525     str = ZOOM_options_get(p->options, "package-name");
2526     if (str && *str)
2527         req->packageName = nmem_strdup (p->odr_out->mem, str);
2528
2529     str = ZOOM_options_get(p->options, "user-id");
2530     if (str)
2531         req->userId = nmem_strdup (p->odr_out->mem, str);
2532
2533     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2534                                               type);
2535
2536     str = ZOOM_options_get(p->options, "function");
2537     if (str)
2538     {
2539         if (!strcmp (str, "create"))
2540             *req->function = 1;
2541         if (!strcmp (str, "delete"))
2542             *req->function = 2;
2543         if (!strcmp (str, "modify"))
2544             *req->function = 3;
2545     }
2546     return apdu;
2547 }
2548
2549 static const char *ill_array_lookup (void *clientData, const char *idx)
2550 {
2551     ZOOM_package p = (ZOOM_package) clientData;
2552     return ZOOM_options_get (p->options, idx+4);
2553 }
2554
2555 static Z_External *encode_ill_request (ZOOM_package p)
2556 {
2557     ODR out = p->odr_out;
2558     ILL_Request *req;
2559     Z_External *r = 0;
2560     struct ill_get_ctl ctl;
2561
2562     ctl.odr = p->odr_out;
2563     ctl.clientData = p;
2564     ctl.f = ill_array_lookup;
2565
2566     req = ill_get_ILLRequest(&ctl, "ill", 0);
2567
2568     if (!ill_Request (out, &req, 0, 0))
2569     {
2570         int ill_request_size;
2571         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2572         if (ill_request_buf)
2573             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2574         return 0;
2575     }
2576     else
2577     {
2578         oident oid;
2579         int illRequest_size = 0;
2580         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2581
2582         oid.proto = PROTO_GENERAL;
2583         oid.oclass = CLASS_GENERAL;
2584         oid.value = VAL_ISO_ILL_1;
2585
2586         r = (Z_External *) odr_malloc (out, sizeof(*r));
2587         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2588         r->indirect_reference = 0;
2589         r->descriptor = 0;
2590         r->which = Z_External_single;
2591
2592         r->u.single_ASN1_type = (Odr_oct *)
2593             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2594         r->u.single_ASN1_type->buf = (unsigned char*)
2595             odr_malloc (out, illRequest_size);
2596         r->u.single_ASN1_type->len = illRequest_size;
2597         r->u.single_ASN1_type->size = illRequest_size;
2598         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2599     }
2600     return r;
2601 }
2602
2603 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2604 {
2605     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2606     const char *str;
2607
2608     req->which = Z_IOItemOrder_esRequest;
2609     req->u.esRequest = (Z_IORequest *)
2610         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2611
2612     /* to keep part ... */
2613     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2614         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2615     req->u.esRequest->toKeep->supplDescription = 0;
2616     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2617         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2618
2619     str = ZOOM_options_get(p->options, "contact-name");
2620     req->u.esRequest->toKeep->contact->name = str ?
2621         nmem_strdup (p->odr_out->mem, str) : 0;
2622
2623     str = ZOOM_options_get(p->options, "contact-phone");
2624     req->u.esRequest->toKeep->contact->phone = str ?
2625         nmem_strdup (p->odr_out->mem, str) : 0;
2626
2627     str = ZOOM_options_get(p->options, "contact-email");
2628     req->u.esRequest->toKeep->contact->email = str ?
2629         nmem_strdup (p->odr_out->mem, str) : 0;
2630
2631     req->u.esRequest->toKeep->addlBilling = 0;
2632
2633     /* not to keep part ... */
2634     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2635         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2636
2637     str = ZOOM_options_get(p->options, "itemorder-setname");
2638     if (!str)
2639         str = "default";
2640
2641     if (!*str)
2642         req->u.esRequest->notToKeep->resultSetItem = 0;
2643     else
2644     {
2645         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2646            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2647
2648         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2649            nmem_strdup (p->odr_out->mem, str);
2650         req->u.esRequest->notToKeep->resultSetItem->item =
2651             (int *) odr_malloc(p->odr_out, sizeof(int));
2652
2653         str = ZOOM_options_get(p->options, "itemorder-item");
2654         *req->u.esRequest->notToKeep->resultSetItem->item =
2655             (str ? atoi(str) : 1);
2656     }
2657     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2658
2659     return req;
2660 }
2661
2662 Z_APDU *create_admin_package(ZOOM_package p, int type,
2663                              Z_ESAdminOriginPartToKeep **toKeepP,
2664                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2665 {
2666     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2667     if (apdu)
2668     {
2669         Z_ESAdminOriginPartToKeep  *toKeep;
2670         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2671         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2672         const char *first_db = "Default";
2673         int num_db;
2674         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2675         if (num_db > 0)
2676             first_db = db[0];
2677
2678         r->direct_reference =
2679             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2680                                    VAL_ADMINSERVICE);
2681         r->descriptor = 0;
2682         r->indirect_reference = 0;
2683         r->which = Z_External_ESAdmin;
2684
2685         r->u.adminService = (Z_Admin *)
2686             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2687         r->u.adminService->which = Z_Admin_esRequest;
2688         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2689             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2690
2691         toKeep = r->u.adminService->u.esRequest->toKeep =
2692             (Z_ESAdminOriginPartToKeep *)
2693             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2694         toKeep->which = type;
2695         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2696         toKeep->u.create = odr_nullval();
2697         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2698
2699         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2700             (Z_ESAdminOriginPartNotToKeep *)
2701             odr_malloc(p->odr_out,
2702                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2703         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2704         notToKeep->u.recordsWillFollow = odr_nullval();
2705         if (toKeepP)
2706             *toKeepP = toKeep;
2707         if (notToKeepP)
2708             *notToKeepP = notToKeep;
2709     }
2710     return apdu;
2711 }
2712
2713 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2714 {
2715     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2716     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2717     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2718     const char *doc = ZOOM_options_get(p->options, "doc");
2719
2720     req->taskSpecificParameters = ext;
2721     ext->direct_reference = req->packageType;
2722     ext->descriptor = 0;
2723     ext->indirect_reference = 0;
2724
2725     ext->which = Z_External_octet;
2726     ext->u.single_ASN1_type = (Odr_oct *)
2727         odr_malloc (p->odr_out, sizeof(Odr_oct));
2728
2729     if (!doc)
2730         doc = "";
2731     ext->u.single_ASN1_type->buf = (unsigned char*)
2732         odr_strdup(p->odr_out, doc);
2733     ext->u.single_ASN1_type->size = ext->u.single_ASN1_type->len = strlen(doc);
2734     return apdu;
2735 }
2736
2737 static Z_APDU *create_update_package(ZOOM_package p)
2738 {
2739     Z_APDU *apdu = 0;
2740     const char *first_db = "Default";
2741     int num_db;
2742     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2743     const char *action = ZOOM_options_get(p->options, "action");
2744     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2745     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2746     const char *record_buf = ZOOM_options_get(p->options, "record");
2747     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2748     int syntax_oid = VAL_NONE;
2749     int action_no = -1;
2750
2751     if (syntax_str)
2752         syntax_oid = oid_getvalbyname(syntax_str);
2753     if (!record_buf)
2754     {
2755         record_buf = "void";
2756         syntax_oid = VAL_SUTRS;
2757     }
2758     if (syntax_oid == VAL_NONE)
2759         syntax_oid = VAL_TEXT_XML;
2760
2761     if (num_db > 0)
2762         first_db = db[0];
2763
2764     if (!action)
2765         action = "specialUpdate";
2766
2767     if (!strcmp(action, "recordInsert"))
2768         action_no = Z_IUOriginPartToKeep_recordInsert;
2769     else if (!strcmp(action, "recordReplace"))
2770         action_no = Z_IUOriginPartToKeep_recordReplace;
2771     else if (!strcmp(action, "recordDelete"))
2772         action_no = Z_IUOriginPartToKeep_recordDelete;
2773     else if (!strcmp(action, "elementUpdate"))
2774         action_no = Z_IUOriginPartToKeep_elementUpdate;
2775     else if (!strcmp(action, "specialUpdate"))
2776         action_no = Z_IUOriginPartToKeep_specialUpdate;
2777     else
2778         return 0;
2779
2780     apdu = create_es_package (p, VAL_DBUPDATE);
2781     if (apdu)
2782     {
2783         Z_IUOriginPartToKeep *toKeep;
2784         Z_IUSuppliedRecords *notToKeep;
2785         Z_External *r = (Z_External *)
2786             odr_malloc (p->odr_out, sizeof(*r));
2787
2788         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2789
2790         r->direct_reference =
2791             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2792                                    VAL_DBUPDATE);
2793         r->descriptor = 0;
2794         r->which = Z_External_update;
2795         r->indirect_reference = 0;
2796         r->u.update = (Z_IUUpdate *)
2797             odr_malloc(p->odr_out, sizeof(*r->u.update));
2798
2799         r->u.update->which = Z_IUUpdate_esRequest;
2800         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2801             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2802         toKeep = r->u.update->u.esRequest->toKeep =
2803             (Z_IUOriginPartToKeep *)
2804             odr_malloc(p->odr_out, sizeof(*toKeep));
2805
2806         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2807         toKeep->schema = 0;
2808         toKeep->elementSetName = 0;
2809         toKeep->actionQualifier = 0;
2810         toKeep->action = odr_intdup(p->odr_out, action_no);
2811
2812         notToKeep = r->u.update->u.esRequest->notToKeep =
2813             (Z_IUSuppliedRecords *)
2814             odr_malloc(p->odr_out, sizeof(*notToKeep));
2815         notToKeep->num = 1;
2816         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2817             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2818         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2819             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2820         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2821         if (recordIdOpaque)
2822         {
2823             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2824                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2825             notToKeep->elements[0]->u.opaque->size =
2826                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2827             notToKeep->elements[0]->u.opaque->buf = (unsigned char*)
2828                 odr_strdup(p->odr_out, recordIdOpaque);
2829         }
2830         else if (recordIdNumber)
2831         {
2832             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2833
2834             notToKeep->elements[0]->u.number =
2835                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2836         }
2837         else
2838             notToKeep->elements[0]->u.opaque = 0;
2839         notToKeep->elements[0]->supplementalId = 0;
2840         notToKeep->elements[0]->correlationInfo = 0;
2841         notToKeep->elements[0]->record =
2842             z_ext_record(p->odr_out, syntax_oid,
2843                          record_buf, strlen(record_buf));
2844     }
2845     if (0 && apdu)
2846     {
2847        ODR print = odr_createmem(ODR_PRINT);
2848
2849        z_APDU(print, &apdu, 0, 0);
2850        odr_destroy(print);
2851     }
2852     return apdu;
2853 }
2854
2855 ZOOM_API(void)
2856     ZOOM_package_send (ZOOM_package p, const char *type)
2857 {
2858     Z_APDU *apdu = 0;
2859     ZOOM_connection c;
2860     if (!p)
2861         return;
2862     c = p->connection;
2863     odr_reset (p->odr_out);
2864     xfree (p->buf_out);
2865     p->buf_out = 0;
2866     if (!strcmp(type, "itemorder"))
2867     {
2868         apdu = create_es_package (p, VAL_ITEMORDER);
2869         if (apdu)
2870         {
2871             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2872
2873             r->direct_reference =
2874                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2875                                        VAL_ITEMORDER);
2876             r->descriptor = 0;
2877             r->which = Z_External_itemOrder;
2878             r->indirect_reference = 0;
2879             r->u.itemOrder = encode_item_order (p);
2880
2881             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2882         }
2883     }
2884     else if (!strcmp(type, "create"))  /* create database */
2885     {
2886         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2887                                     0, 0);
2888     }
2889     else if (!strcmp(type, "drop"))  /* drop database */
2890     {
2891         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2892                                     0, 0);
2893     }
2894     else if (!strcmp(type, "commit"))  /* commit changes */
2895     {
2896         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
2897                                     0, 0);
2898     }
2899     else if (!strcmp(type, "update")) /* update record(s) */
2900     {
2901         apdu = create_update_package(p);
2902     }
2903     else if (!strcmp(type, "xmlupdate"))
2904     {
2905         apdu = create_xmlupdate_package(p);
2906     }
2907     if (apdu)
2908     {
2909         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2910         {
2911             char *buf;
2912
2913             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2914             task->u.package = p;
2915             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2916             p->buf_out = (char *) xmalloc (p->len_out);
2917             memcpy (p->buf_out, buf, p->len_out);
2918
2919             (p->refcount)++;
2920             if (!c->async)
2921             {
2922                 while (ZOOM_event (1, &c))
2923                     ;
2924             }
2925         }
2926     }
2927 }
2928
2929 ZOOM_API(ZOOM_package)
2930     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2931 {
2932     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2933
2934     p->connection = c;
2935     p->odr_out = odr_createmem (ODR_ENCODE);
2936     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2937     p->refcount = 1;
2938     p->buf_out = 0;
2939     p->len_out = 0;
2940     return p;
2941 }
2942
2943 ZOOM_API(void)
2944     ZOOM_package_destroy(ZOOM_package p)
2945 {
2946     if (!p)
2947         return;
2948     (p->refcount)--;
2949     if (p->refcount == 0)
2950     {
2951         odr_destroy (p->odr_out);
2952         xfree (p->buf_out);
2953
2954         ZOOM_options_destroy (p->options);
2955         xfree (p);
2956     }
2957 }
2958
2959 ZOOM_API(const char *)
2960 ZOOM_package_option_get (ZOOM_package p, const char *key)
2961 {
2962     return ZOOM_options_get (p->options, key);
2963 }
2964
2965
2966 ZOOM_API(void)
2967 ZOOM_package_option_set (ZOOM_package p, const char *key,
2968                               const char *val)
2969 {
2970     ZOOM_options_set (p->options, key, val);
2971 }
2972
2973 static int ZOOM_connection_exec_task (ZOOM_connection c)
2974 {
2975     ZOOM_task task = c->tasks;
2976     zoom_ret ret = zoom_complete;
2977
2978     if (!task)
2979         return 0;
2980     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
2981              c, task->which, task->running);
2982     if (c->error != ZOOM_ERROR_NONE)
2983     {
2984         yaz_log(log_details, "%p ZOOM_connection_exec_task "
2985                 "removing tasks because of error = %d", c, c->error);
2986         ZOOM_connection_remove_tasks (c);
2987         return 0;
2988     }
2989     if (task->running)
2990     {
2991         yaz_log(log_details, "%p ZOOM_connection_exec_task "
2992                  "task already running", c);
2993         return 0;
2994     }
2995     task->running = 1;
2996     ret = zoom_complete;
2997     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2998     {
2999         switch (task->which)
3000         {
3001         case ZOOM_TASK_SEARCH:
3002             if (c->proto == PROTO_HTTP)
3003                 ret = ZOOM_connection_srw_send_search(c);
3004             else
3005                 ret = ZOOM_connection_send_search(c);
3006             break;
3007         case ZOOM_TASK_RETRIEVE:
3008             if (c->proto == PROTO_HTTP)
3009                 ret = ZOOM_connection_srw_send_search(c);
3010             else
3011                 ret = send_present (c);
3012             break;
3013         case ZOOM_TASK_CONNECT:
3014             ret = do_connect(c);
3015             break;
3016         case ZOOM_TASK_SCAN:
3017             ret = send_scan(c);
3018             break;
3019         case ZOOM_TASK_PACKAGE:
3020             ret = send_package(c);
3021             break;
3022         case ZOOM_TASK_SORT:
3023             c->tasks->u.sort.resultset->r_sort_spec =
3024                 c->tasks->u.sort.q->sort_spec;
3025             ret = send_sort(c, c->tasks->u.sort.resultset);
3026             break;
3027         }
3028     }
3029     else
3030     {
3031         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3032                 "remove tasks because no connection exist", c);
3033         ZOOM_connection_remove_tasks (c);
3034     }
3035     if (ret == zoom_complete)
3036     {
3037         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3038                  "task removed (complete)", c);
3039         ZOOM_connection_remove_task (c);
3040         return 0;
3041     }
3042     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3043             "task pending", c);
3044     return 1;
3045 }
3046
3047 static zoom_ret send_sort_present (ZOOM_connection c)
3048 {
3049     zoom_ret r = zoom_complete;
3050
3051     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3052         r = send_sort (c, c->tasks->u.search.resultset);
3053     if (r == zoom_complete)
3054         r = send_present (c);
3055     return r;
3056 }
3057
3058 static int es_response (ZOOM_connection c,
3059                         Z_ExtendedServicesResponse *res)
3060 {
3061     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3062         return 0;
3063     if (res->diagnostics && res->num_diagnostics > 0)
3064         response_diag(c, res->diagnostics[0]);
3065     if (res->taskPackage &&
3066         res->taskPackage->which == Z_External_extendedService)
3067     {
3068         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3069         Odr_oct *id = taskPackage->targetReference;
3070
3071         if (id)
3072             ZOOM_options_setl (c->tasks->u.package->options,
3073                                "targetReference", (char*) id->buf, id->len);
3074     }
3075     if (res->taskPackage &&
3076         res->taskPackage->which == Z_External_octet)
3077     {
3078         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3079         ZOOM_options_setl (c->tasks->u.package->options,
3080                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
3081     }
3082     return 1;
3083 }
3084
3085 static void interpret_init_diag(ZOOM_connection c,
3086                                 Z_DiagnosticFormat *diag)
3087 {
3088     if (diag->num > 0)
3089     {
3090         Z_DiagnosticFormat_s *ds = diag->elements[0];
3091         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3092             response_default_diag(c, ds->u.defaultDiagRec);
3093     }
3094 }
3095
3096
3097 static void interpret_otherinformation_field(ZOOM_connection c,
3098                                              Z_OtherInformation *ui)
3099 {
3100     int i;
3101     for (i = 0; i < ui->num_elements; i++)
3102     {
3103         Z_OtherInformationUnit *unit = ui->list[i];
3104         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3105             unit->information.externallyDefinedInfo &&
3106             unit->information.externallyDefinedInfo->which ==
3107             Z_External_diag1)
3108         {
3109             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3110         }
3111     }
3112 }
3113
3114 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3115 {
3116     Z_InitResponse *initrs;
3117
3118     c->mask = 0;
3119     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3120     switch(apdu->which)
3121     {
3122     case Z_APDU_initResponse:
3123         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3124         initrs = apdu->u.initResponse;
3125         ZOOM_connection_option_set(c, "serverImplementationId",
3126                                    initrs->implementationId ?
3127                                    initrs->implementationId : "");
3128         ZOOM_connection_option_set(c, "serverImplementationName",
3129                                    initrs->implementationName ?
3130                                    initrs->implementationName : "");
3131         ZOOM_connection_option_set(c, "serverImplementationVersion",
3132                                    initrs->implementationVersion ?
3133                                    initrs->implementationVersion : "");
3134         /* Set the three old options too, for old applications */
3135         ZOOM_connection_option_set(c, "targetImplementationId",
3136                                    initrs->implementationId ?
3137                                    initrs->implementationId : "");
3138         ZOOM_connection_option_set(c, "targetImplementationName",
3139                                    initrs->implementationName ?
3140                                    initrs->implementationName : "");
3141         ZOOM_connection_option_set(c, "targetImplementationVersion",
3142                                    initrs->implementationVersion ?
3143                                    initrs->implementationVersion : "");
3144         if (!*initrs->result)
3145         {
3146             Z_External *uif = initrs->userInformationField;
3147
3148             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3149
3150             if (uif && uif->which == Z_External_userInfo1)
3151                 interpret_otherinformation_field(c, uif->u.userInfo1);
3152         }
3153         else
3154         {
3155             char *cookie =
3156                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3157                                           VAL_COOKIE, 1, 0);
3158             xfree (c->cookie_in);
3159             c->cookie_in = 0;
3160             if (cookie)
3161                 c->cookie_in = xstrdup(cookie);
3162             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3163                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3164                 c->support_named_resultsets = 1;
3165             if (c->tasks)
3166             {
3167                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3168                 ZOOM_connection_remove_task (c);
3169             }
3170             ZOOM_connection_exec_task (c);
3171         }
3172         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3173         {
3174             NMEM tmpmem = nmem_create();
3175             Z_CharSetandLanguageNegotiation *p =
3176                 yaz_get_charneg_record(initrs->otherInfo);
3177
3178             if (p)
3179             {
3180                 char *charset = NULL, *lang = NULL;
3181                 int sel;
3182
3183                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3184                 yaz_log(log_details, "%p recv_apdu target accepted: "
3185                         "charset %s, language %s, select %d",
3186                         c,
3187                         charset ? charset : "none", lang ? lang : "none", sel);
3188                 if (charset)
3189                     ZOOM_connection_option_set (c, "negotiation-charset",
3190                                                 charset);
3191                 if (lang)
3192                     ZOOM_connection_option_set (c, "negotiation-lang",
3193                                                 lang);
3194
3195                 ZOOM_connection_option_set (
3196                     c,  "negotiation-charset-in-effect-for-records",
3197                     (sel != 0) ? "1" : "0");
3198                 nmem_destroy(tmpmem);
3199             }
3200         }
3201         break;
3202     case Z_APDU_searchResponse:
3203         yaz_log(log_api, "%p recv_apdu Search response", c);
3204         handle_search_response (c, apdu->u.searchResponse);
3205         if (send_sort_present (c) == zoom_complete)
3206             ZOOM_connection_remove_task (c);
3207         break;
3208     case Z_APDU_presentResponse:
3209         yaz_log(log_api, "%p recv_apdu Present response", c);
3210         handle_present_response (c, apdu->u.presentResponse);
3211         if (send_present (c) == zoom_complete)
3212             ZOOM_connection_remove_task (c);
3213         break;
3214     case Z_APDU_sortResponse:
3215         yaz_log(log_api, "%p recv_apdu Sort response", c);
3216         sort_response (c, apdu->u.sortResponse);
3217         if (send_present (c) == zoom_complete)
3218             ZOOM_connection_remove_task (c);
3219         break;
3220     case Z_APDU_scanResponse:
3221         yaz_log(log_api, "%p recv_apdu Scan response", c);
3222         scan_response (c, apdu->u.scanResponse);
3223         ZOOM_connection_remove_task (c);
3224         break;
3225     case Z_APDU_extendedServicesResponse:
3226         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3227         es_response (c, apdu->u.extendedServicesResponse);
3228         ZOOM_connection_remove_task (c);
3229         break;
3230     case Z_APDU_close:
3231         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3232         if (c->reconnect_ok)
3233         {
3234             do_close(c);
3235             c->tasks->running = 0;
3236             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3237         }
3238         else
3239         {
3240             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3241             do_close(c);
3242         }
3243         break;
3244     default:
3245         yaz_log(log_api, "%p Received unknown PDU", c);
3246         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3247         do_close(c);
3248     }
3249 }
3250
3251 #if HAVE_XML2
3252 static void handle_srw_response(ZOOM_connection c,
3253                                 Z_SRW_searchRetrieveResponse *res)
3254 {
3255     ZOOM_resultset resultset = 0;
3256     int i;
3257     NMEM nmem;
3258     ZOOM_Event event;
3259
3260     if (!c->tasks)
3261         return;
3262
3263     if (c->tasks->which == ZOOM_TASK_SEARCH)
3264         resultset = c->tasks->u.search.resultset;
3265     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3266         resultset = c->tasks->u.retrieve.resultset;
3267     else
3268         return ;
3269
3270     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3271     ZOOM_connection_put_event(c, event);
3272
3273     resultset->size = 0;
3274
3275     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3276
3277     if (res->numberOfRecords)
3278         resultset->size = *res->numberOfRecords;
3279
3280     for (i = 0; i<res->num_records; i++)
3281     {
3282         int pos;
3283
3284         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3285             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3286
3287         if (res->records[i].recordPosition &&
3288             *res->records[i].recordPosition > 0)
3289             pos = *res->records[i].recordPosition - 1;
3290         else
3291             pos = resultset->start + i;
3292
3293         npr->databaseName = 0;
3294         npr->which = Z_NamePlusRecord_databaseRecord;
3295         npr->u.databaseRecord = (Z_External *)
3296             odr_malloc(c->odr_in, sizeof(Z_External));
3297         npr->u.databaseRecord->descriptor = 0;
3298         npr->u.databaseRecord->direct_reference =
3299             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3300         npr->u.databaseRecord->which = Z_External_octet;
3301         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3302             odr_malloc(c->odr_in, sizeof(Odr_oct));
3303         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3304             res->records[i].recordData_buf;
3305         npr->u.databaseRecord->u.octet_aligned->len =
3306             npr->u.databaseRecord->u.octet_aligned->size =
3307             res->records[i].recordData_len;
3308         record_cache_add (resultset, npr, pos);
3309     }
3310     if (res->num_diagnostics > 0)
3311     {
3312         const char *uri = res->diagnostics[0].uri;
3313         if (uri)
3314         {
3315             int code = 0;
3316             const char *cp;
3317             if ((cp = strrchr(uri, '/')))
3318                 code = atoi(cp+1);
3319             set_dset_error(c, code, uri,
3320                            res->diagnostics[0].details, 0);
3321         }
3322     }
3323     nmem = odr_extract_mem(c->odr_in);
3324     nmem_transfer(resultset->odr->mem, nmem);
3325     nmem_destroy(nmem);
3326 }
3327 #endif
3328
3329 #if HAVE_XML2
3330 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3331 {
3332     int ret = -1;
3333     const char *content_type = z_HTTP_header_lookup(hres->headers,
3334                                                     "Content-Type");
3335     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3336                                                        "Connection");
3337     c->mask = 0;
3338     yaz_log(log_details, "%p handle_http", c);
3339
3340     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3341     {
3342         Z_SOAP *soap_package = 0;
3343         ODR o = c->odr_in;
3344         Z_SOAP_Handler soap_handlers[2] = {
3345             {"http://www.loc.gov/zing/srw/", 0,
3346              (Z_SOAP_fun) yaz_srw_codec},
3347             {0, 0, 0}
3348         };
3349         ret = z_soap_codec(o, &soap_package,
3350                            &hres->content_buf, &hres->content_len,
3351                            soap_handlers);
3352         if (!ret && soap_package->which == Z_SOAP_generic &&
3353             soap_package->u.generic->no == 0)
3354         {
3355             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3356             if (sr->which == Z_SRW_searchRetrieve_response)
3357                 handle_srw_response(c, sr->u.response);
3358             else
3359                 ret = -1;
3360         }
3361         else if (!ret && (soap_package->which == Z_SOAP_fault
3362                           || soap_package->which == Z_SOAP_error))
3363         {
3364             set_HTTP_error(c, hres->code,
3365                            soap_package->u.fault->fault_code,
3366                            soap_package->u.fault->fault_string);
3367         }
3368         else
3369             ret = -1;
3370     }
3371     if (ret)
3372     {
3373         if (hres->code != 200)
3374             set_HTTP_error(c, hres->code, 0, 0);
3375         else
3376             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3377         do_close (c);
3378     }
3379     ZOOM_connection_remove_task(c);
3380     if (!strcmp(hres->version, "1.0"))
3381     {
3382         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3383         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3384             do_close(c);
3385     }
3386     else
3387     {
3388         /* HTTP 1.1: only if no close we stay alive .. */
3389         if (connection_head && !strcmp(connection_head, "close"))
3390             do_close(c);
3391     }
3392 }
3393 #endif
3394
3395 static int do_read (ZOOM_connection c)
3396 {
3397     int r, more;
3398     ZOOM_Event event;
3399
3400     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3401     ZOOM_connection_put_event (c, event);
3402
3403     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3404     more = cs_more(c->cs);
3405     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3406     if (r == 1)
3407         return 0;
3408     if (r <= 0)
3409     {
3410         if (c->reconnect_ok)
3411         {
3412             do_close (c);
3413             c->reconnect_ok = 0;
3414             yaz_log(log_details, "%p do_read reconnect read", c);
3415             c->tasks->running = 0;
3416             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3417         }
3418         else
3419         {
3420             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3421             do_close (c);
3422         }
3423     }
3424     else
3425     {
3426         Z_GDU *gdu;
3427         ZOOM_Event event;
3428
3429         odr_reset (c->odr_in);
3430         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3431         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3432         ZOOM_connection_put_event (c, event);
3433
3434         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3435         {
3436             int x;
3437             int err = odr_geterrorx(c->odr_in, &x);
3438             char msg[60];
3439             const char *element = odr_getelement(c->odr_in);
3440             sprintf (msg, "ODR code %d:%d element=%-20s",
3441                      err, x, element ? element : "<unknown>");
3442             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3443             do_close (c);
3444         }
3445         else if (gdu->which == Z_GDU_Z3950)
3446             recv_apdu (c, gdu->u.z3950);
3447         else if (gdu->which == Z_GDU_HTTP_Response)
3448         {
3449 #if HAVE_XML2
3450             handle_http (c, gdu->u.HTTP_Response);
3451 #else
3452             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3453             do_close (c);
3454 #endif
3455         }
3456         c->reconnect_ok = 0;
3457     }
3458     return 1;
3459 }
3460
3461 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3462 {
3463     int r;
3464     ZOOM_Event event;
3465
3466     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3467     ZOOM_connection_put_event (c, event);
3468
3469     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3470     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3471     {
3472         yaz_log(log_details, "%p do_write_ex write failed", c);
3473         if (c->reconnect_ok)
3474         {
3475             do_close (c);
3476             c->reconnect_ok = 0;
3477             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3478             c->tasks->running = 0;
3479             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3480             return zoom_pending;
3481         }
3482         if (c->state == STATE_CONNECTING)
3483             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3484         else
3485             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3486         do_close (c);
3487         return zoom_complete;
3488     }
3489     else if (r == 1)
3490     {
3491         c->mask = ZOOM_SELECT_EXCEPT;
3492         if (c->cs->io_pending & CS_WANT_WRITE)
3493             c->mask += ZOOM_SELECT_WRITE;
3494         if (c->cs->io_pending & CS_WANT_READ)
3495             c->mask += ZOOM_SELECT_READ;
3496         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3497                 c, c->mask);
3498     }
3499     else
3500     {
3501         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3502         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3503                 c, c->mask);
3504     }
3505     return zoom_pending;
3506 }
3507
3508 static zoom_ret do_write(ZOOM_connection c)
3509 {
3510     return do_write_ex (c, c->buf_out, c->len_out);
3511 }
3512
3513
3514 ZOOM_API(const char *)
3515 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3516 {
3517     return ZOOM_options_get (c->options, key);
3518 }
3519
3520 ZOOM_API(const char *)
3521 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp)
3522 {
3523     return ZOOM_options_getl (c->options, key, lenp);
3524 }
3525
3526 ZOOM_API(void)
3527 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3528                             const char *val)
3529 {
3530     ZOOM_options_set (c->options, key, val);
3531 }
3532
3533 ZOOM_API(void)
3534 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3535                              const char *val, int len)
3536 {
3537     ZOOM_options_setl (c->options, key, val, len);
3538 }
3539
3540 ZOOM_API(const char *)
3541 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3542 {
3543     return ZOOM_options_get (r->options, key);
3544 }
3545
3546 ZOOM_API(void)
3547 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3548                                   const char *val)
3549 {
3550     ZOOM_options_set (r->options, key, val);
3551 }
3552
3553
3554 ZOOM_API(int)
3555 ZOOM_connection_errcode (ZOOM_connection c)
3556 {
3557     return ZOOM_connection_error (c, 0, 0);
3558 }
3559
3560 ZOOM_API(const char *)
3561 ZOOM_connection_errmsg (ZOOM_connection c)
3562 {
3563     const char *msg;
3564     ZOOM_connection_error (c, &msg, 0);
3565     return msg;
3566 }
3567
3568 ZOOM_API(const char *)
3569 ZOOM_connection_addinfo (ZOOM_connection c)
3570 {
3571     const char *addinfo;
3572     ZOOM_connection_error (c, 0, &addinfo);
3573     return addinfo;
3574 }
3575
3576 ZOOM_API(const char *)
3577 ZOOM_diag_str (int error)
3578 {
3579     switch (error)
3580     {
3581     case ZOOM_ERROR_NONE:
3582         return "No error";
3583     case ZOOM_ERROR_CONNECT:
3584         return "Connect failed";
3585     case ZOOM_ERROR_MEMORY:
3586         return "Out of memory";
3587     case ZOOM_ERROR_ENCODE:
3588         return "Encoding failed";
3589     case ZOOM_ERROR_DECODE:
3590         return "Decoding failed";
3591     case ZOOM_ERROR_CONNECTION_LOST:
3592         return "Connection lost";
3593     case ZOOM_ERROR_INIT:
3594         return "Init rejected";
3595     case ZOOM_ERROR_INTERNAL:
3596         return "Internal failure";
3597     case ZOOM_ERROR_TIMEOUT:
3598         return "Timeout";
3599     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3600         return "Unsupported protocol";
3601     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3602         return "Unsupported query type";
3603     case ZOOM_ERROR_INVALID_QUERY:
3604         return "Invalid query";
3605     default:
3606         return diagbib1_str (error);
3607     }
3608 }
3609
3610 ZOOM_API(int)
3611 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3612                          const char **addinfo, const char **diagset)
3613 {
3614     int error = c->error;
3615     if (cp)
3616     {
3617         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3618             *cp = ZOOM_diag_str(error);
3619         else if (!strcmp(c->diagset, "HTTP"))
3620             *cp = z_HTTP_errmsg(c->error);
3621         else if (!strcmp(c->diagset, "Bib-1"))
3622             *cp = ZOOM_diag_str(error);
3623         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3624             *cp = yaz_diag_srw_str(c->error);
3625         else
3626             *cp = "Unknown error and diagnostic set";
3627     }
3628     if (addinfo)
3629         *addinfo = c->addinfo ? c->addinfo : "";
3630     if (diagset)
3631         *diagset = c->diagset ? c->diagset : "";
3632     return c->error;
3633 }
3634
3635 ZOOM_API(int)
3636 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3637                        const char **addinfo)
3638 {
3639     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3640 }
3641
3642 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3643 {
3644     ZOOM_Event event = 0;
3645     int r = cs_look(c->cs);
3646     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3647              c, mask, r);
3648
3649     if (r == CS_NONE)
3650     {
3651         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3652         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3653         do_close (c);
3654         ZOOM_connection_put_event (c, event);
3655     }
3656     else if (r == CS_CONNECT)
3657     {
3658         int ret;
3659         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3660
3661         ret = cs_rcvconnect (c->cs);
3662         yaz_log(log_details, "%p ZOOM_connection_do_io "
3663                 "cs_rcvconnect returned %d", c, ret);
3664         if (ret == 1)
3665         {
3666             c->mask = ZOOM_SELECT_EXCEPT;
3667             if (c->cs->io_pending & CS_WANT_WRITE)
3668                 c->mask += ZOOM_SELECT_WRITE;
3669             if (c->cs->io_pending & CS_WANT_READ)
3670                 c->mask += ZOOM_SELECT_READ;
3671             ZOOM_connection_put_event (c, event);
3672         }
3673         else if (ret == 0)
3674         {
3675             ZOOM_connection_put_event (c, event);
3676             get_cert(c);
3677             if (c->proto == PROTO_Z3950)
3678                 ZOOM_connection_send_init(c);
3679             else
3680             {
3681                 /* no init request for SRW .. */
3682                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3683                 ZOOM_connection_remove_task (c);
3684                 c->mask = 0;
3685                 ZOOM_connection_exec_task (c);
3686             }
3687             c->state = STATE_ESTABLISHED;
3688         }
3689         else
3690         {
3691             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3692             do_close (c);
3693             ZOOM_connection_put_event (c, event);
3694         }
3695     }
3696     else
3697     {
3698         if (mask & ZOOM_SELECT_READ)
3699             do_read (c);
3700         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3701             do_write (c);
3702     }
3703     return 1;
3704 }
3705
3706 ZOOM_API(int)
3707 ZOOM_connection_last_event(ZOOM_connection cs)
3708 {
3709     if (!cs)
3710         return ZOOM_EVENT_NONE;
3711     return cs->last_event;
3712 }
3713
3714 ZOOM_API(int)
3715 ZOOM_event (int no, ZOOM_connection *cs)
3716 {
3717     int timeout = 30;      /* default timeout in seconds */
3718     int timeout_set = 0;   /* whether it was overriden at all */
3719 #if HAVE_SYS_POLL_H
3720     struct pollfd pollfds[1024];
3721     ZOOM_connection poll_cs[1024];
3722 #else
3723     struct timeval tv;
3724     fd_set input, output, except;
3725 #endif
3726     int i, r, nfds;
3727     int max_fd = 0;
3728
3729     for (i = 0; i<no; i++)
3730     {
3731         ZOOM_connection c = cs[i];
3732         ZOOM_Event event;
3733         if (c && (event = ZOOM_connection_get_event(c)))
3734         {
3735             ZOOM_Event_destroy (event);
3736             return i+1;
3737         }
3738     }
3739     for (i = 0; i<no; i++)
3740     {
3741         ZOOM_connection c = cs[i];
3742         ZOOM_Event event;
3743         if (c && ZOOM_connection_exec_task (c))
3744         {
3745             if ((event = ZOOM_connection_get_event(c)))
3746             {
3747                 ZOOM_Event_destroy (event);
3748                 return i+1;
3749             }
3750         }
3751     }
3752 #if HAVE_SYS_POLL_H
3753
3754 #else
3755     FD_ZERO (&input);
3756     FD_ZERO (&output);
3757     FD_ZERO (&except);
3758 #endif
3759     nfds = 0;
3760     for (i = 0; i<no; i++)
3761     {
3762         ZOOM_connection c = cs[i];
3763         int fd, mask;
3764         int this_timeout;
3765
3766         if (!c)
3767             continue;
3768         fd = z3950_connection_socket(c);
3769         mask = z3950_connection_mask(c);
3770
3771         if (fd == -1)
3772             continue;
3773         if (max_fd < fd)
3774             max_fd = fd;
3775
3776         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3777         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3778         if (this_timeout != -2)
3779         {
3780             /* ensure the minimum timeout is used */
3781             if (!timeout_set)
3782                 timeout = this_timeout;
3783             else if (this_timeout != -1 && this_timeout < timeout)
3784                 timeout = this_timeout;
3785             timeout_set = 1;
3786         }
3787 #if HAVE_SYS_POLL_H
3788         if (mask)
3789         {
3790             short poll_events = 0;
3791
3792             if (mask & ZOOM_SELECT_READ)
3793                 poll_events += POLLIN;
3794             if (mask & ZOOM_SELECT_WRITE)
3795                 poll_events += POLLOUT;
3796             if (mask & ZOOM_SELECT_EXCEPT)
3797                 poll_events += POLLERR;
3798             pollfds[nfds].fd = fd;
3799             pollfds[nfds].events = poll_events;
3800             pollfds[nfds].revents = 0;
3801             poll_cs[nfds] = c;
3802             nfds++;
3803         }
3804 #else
3805         if (mask & ZOOM_SELECT_READ)
3806         {
3807             FD_SET (fd, &input);
3808             nfds++;
3809         }
3810         if (mask & ZOOM_SELECT_WRITE)
3811         {
3812             FD_SET (fd, &output);
3813             nfds++;
3814         }
3815         if (mask & ZOOM_SELECT_EXCEPT)
3816         {
3817             FD_SET (fd, &except);
3818             nfds++;
3819         }
3820 #endif
3821     }
3822     if (!nfds)
3823         return 0;
3824
3825 #if HAVE_SYS_POLL_H
3826     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3827     for (i = 0; i<nfds; i++)
3828     {
3829         ZOOM_connection c = poll_cs[i];
3830         if (r && c->mask)
3831         {
3832             int mask = 0;
3833             if (pollfds[i].revents & POLLIN)
3834                 mask += ZOOM_SELECT_READ;
3835             if (pollfds[i].revents & POLLOUT)
3836                 mask += ZOOM_SELECT_WRITE;
3837             if (pollfds[i].revents & POLLERR)
3838                 mask += ZOOM_SELECT_EXCEPT;
3839             if (mask)
3840                 ZOOM_connection_do_io(c, mask);
3841         }
3842         else if (r == 0 && c->mask)
3843         {
3844             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3845             /* timeout and this connection was waiting */
3846             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3847             do_close (c);
3848             ZOOM_connection_put_event(c, event);
3849         }
3850     }
3851 #else
3852     tv.tv_sec = timeout;
3853     tv.tv_usec = 0;
3854     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
3855     for (i = 0; i<no; i++)
3856     {
3857         ZOOM_connection c = cs[i];
3858         int fd, mask;
3859
3860         if (!c)
3861             continue;
3862         fd = z3950_connection_socket(c);
3863         mask = 0;
3864         if (r && c->mask)
3865         {
3866             /* no timeout and real socket */
3867             if (FD_ISSET(fd, &input))
3868                 mask += ZOOM_SELECT_READ;
3869             if (FD_ISSET(fd, &output))
3870                 mask += ZOOM_SELECT_WRITE;
3871             if (FD_ISSET(fd, &except))
3872                 mask += ZOOM_SELECT_EXCEPT;
3873             if (mask)
3874                 ZOOM_connection_do_io(c, mask);
3875         }
3876         if (r == 0 && c->mask)
3877         {
3878             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3879             /* timeout and this connection was waiting */
3880             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3881             do_close (c);
3882             ZOOM_connection_put_event(c, event);
3883         }
3884     }
3885 #endif
3886     for (i = 0; i<no; i++)
3887     {
3888         ZOOM_connection c = cs[i];
3889         ZOOM_Event event;
3890         if (c && (event = ZOOM_connection_get_event(c)))
3891         {
3892             ZOOM_Event_destroy (event);
3893             return i+1;
3894         }
3895     }
3896     return 0;
3897 }
3898 /*
3899  * Local variables:
3900  * c-basic-offset: 4
3901  * indent-tabs-mode: nil
3902  * End:
3903  * vim: shiftwidth=4 tabstop=8 expandtab
3904  */
3905