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 1.46 2005-08-09 18:29:35 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: 1.46 $");
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_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2032 {
2033     ZOOM_resultset resultset;
2034     ZOOM_Event event;
2035
2036     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2037         return ;
2038
2039     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2040     ZOOM_connection_put_event(c, event);
2041
2042     resultset = c->tasks->u.search.resultset;
2043
2044     resultset->size = *sr->resultCount;
2045     handle_records (c, sr->records, 0);
2046 }
2047
2048 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2049 {
2050     if (res->diagnostics && res->num_diagnostics > 0)
2051         response_diag (c, res->diagnostics[0]);
2052 }
2053
2054 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2055 {
2056     NMEM nmem = odr_extract_mem (c->odr_in);
2057     ZOOM_scanset scan;
2058
2059     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2060         return 0;
2061     scan = c->tasks->u.scan.scan;
2062
2063     if (res->entries && res->entries->nonsurrogateDiagnostics)
2064         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2065     scan->scan_response = res;
2066     nmem_transfer (scan->odr->mem, nmem);
2067     if (res->stepSize)
2068         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2069     if (res->positionOfTerm)
2070         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2071     if (res->scanStatus)
2072         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2073     if (res->numberOfEntriesReturned)
2074         ZOOM_options_set_int (scan->options, "number",
2075                               *res->numberOfEntriesReturned);
2076     nmem_destroy (nmem);
2077     return 1;
2078 }
2079
2080 static zoom_ret send_sort (ZOOM_connection c,
2081                            ZOOM_resultset resultset)
2082 {
2083     if (c->error)
2084         resultset->r_sort_spec = 0;
2085     if (resultset->r_sort_spec)
2086     {
2087         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2088         Z_SortRequest *req = apdu->u.sortRequest;
2089
2090         req->num_inputResultSetNames = 1;
2091         req->inputResultSetNames = (Z_InternationalString **)
2092             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2093         req->inputResultSetNames[0] =
2094             odr_strdup (c->odr_out, resultset->setname);
2095         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2096         req->sortSequence = resultset->r_sort_spec;
2097         resultset->r_sort_spec = 0;
2098         return send_APDU (c, apdu);
2099     }
2100     return zoom_complete;
2101 }
2102
2103 static zoom_ret send_present(ZOOM_connection c)
2104 {
2105     Z_APDU *apdu = 0;
2106     Z_PresentRequest *req = 0;
2107     int i = 0;
2108     const char *syntax = 0;
2109     const char *elementSetName = 0;
2110     ZOOM_resultset  resultset;
2111
2112     if (!c->tasks)
2113     {
2114         yaz_log(log_details, "%p send_present no tasks", c);
2115         return zoom_complete;
2116     }
2117     switch (c->tasks->which)
2118     {
2119     case ZOOM_TASK_SEARCH:
2120         resultset = c->tasks->u.search.resultset;
2121         break;
2122     case ZOOM_TASK_RETRIEVE:
2123         resultset = c->tasks->u.retrieve.resultset;
2124         resultset->start = c->tasks->u.retrieve.start;
2125         resultset->count = c->tasks->u.retrieve.count;
2126
2127         if (resultset->start >= resultset->size)
2128         {
2129             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2130                     c, resultset->start, resultset->size);
2131             return zoom_complete;
2132         }
2133         if (resultset->start + resultset->count > resultset->size)
2134             resultset->count = resultset->size - resultset->start;
2135         break;
2136     default:
2137         return zoom_complete;
2138     }
2139     yaz_log(log_details, "%p send_present start=%d count=%d",
2140             c, resultset->start, resultset->count);
2141
2142     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2143     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2144
2145     if (c->error)                  /* don't continue on error */
2146         return zoom_complete;
2147     if (resultset->start < 0)
2148         return zoom_complete;
2149     for (i = 0; i<resultset->count; i++)
2150     {
2151         ZOOM_record rec =
2152             record_cache_lookup (resultset, i + resultset->start);
2153         if (!rec)
2154             break;
2155     }
2156     if (i == resultset->count)
2157     {
2158         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2159         return zoom_complete;
2160     }
2161
2162     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2163     req = apdu->u.presentRequest;
2164
2165     resultset->start += i;
2166     resultset->count -= i;
2167
2168     if (i)
2169         yaz_log(log_details, "%p send_present skip=%d", c, i);
2170
2171     *req->resultSetStartPoint = resultset->start + 1;
2172     *req->numberOfRecordsRequested = resultset->step>0 ?
2173         resultset->step : resultset->count;
2174     assert (*req->numberOfRecordsRequested > 0);
2175
2176
2177     if (syntax && *syntax)
2178         req->preferredRecordSyntax =
2179             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2180
2181     if (resultset->schema && *resultset->schema)
2182     {
2183         Z_RecordComposition *compo = (Z_RecordComposition *)
2184             odr_malloc (c->odr_out, sizeof(*compo));
2185
2186         req->recordComposition = compo;
2187         compo->which = Z_RecordComp_complex;
2188         compo->u.complex = (Z_CompSpec *)
2189             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2190         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2191             odr_malloc(c->odr_out, sizeof(bool_t));
2192         *compo->u.complex->selectAlternativeSyntax = 0;
2193
2194         compo->u.complex->generic = (Z_Specification *)
2195             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2196
2197         compo->u.complex->generic->which = Z_Schema_oid;
2198         compo->u.complex->generic->schema.oid = (Odr_oid *)
2199             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2200
2201         if (!compo->u.complex->generic->schema.oid)
2202         {
2203             /* OID wasn't a schema! Try record syntax instead. */
2204
2205             compo->u.complex->generic->schema.oid = (Odr_oid *)
2206                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2207         }
2208         if (elementSetName && *elementSetName)
2209         {
2210             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2211                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2212             compo->u.complex->generic->elementSpec->which =
2213                 Z_ElementSpec_elementSetName;
2214             compo->u.complex->generic->elementSpec->u.elementSetName =
2215                 odr_strdup (c->odr_out, elementSetName);
2216         }
2217         else
2218             compo->u.complex->generic->elementSpec = 0;
2219         compo->u.complex->num_dbSpecific = 0;
2220         compo->u.complex->dbSpecific = 0;
2221         compo->u.complex->num_recordSyntax = 0;
2222         compo->u.complex->recordSyntax = 0;
2223     }
2224     else if (elementSetName && *elementSetName)
2225     {
2226         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2227             odr_malloc (c->odr_out, sizeof(*esn));
2228         Z_RecordComposition *compo = (Z_RecordComposition *)
2229             odr_malloc (c->odr_out, sizeof(*compo));
2230
2231         esn->which = Z_ElementSetNames_generic;
2232         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2233         compo->which = Z_RecordComp_simple;
2234         compo->u.simple = esn;
2235         req->recordComposition = compo;
2236     }
2237     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2238     return send_APDU (c, apdu);
2239 }
2240
2241 ZOOM_API(ZOOM_scanset)
2242 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2243 {
2244     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2245
2246     scan->connection = c;
2247     scan->odr = odr_createmem (ODR_DECODE);
2248     scan->options = ZOOM_options_create_with_parent (c->options);
2249     scan->refcount = 1;
2250     scan->scan_response = 0;
2251
2252     if ((scan->termListAndStartPoint =
2253          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2254                       start)))
2255     {
2256         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2257         task->u.scan.scan = scan;
2258
2259         (scan->refcount)++;
2260         if (!c->async)
2261         {
2262             while (ZOOM_event (1, &c))
2263                 ;
2264         }
2265     }
2266     return scan;
2267 }
2268
2269 ZOOM_API(void)
2270 ZOOM_scanset_destroy (ZOOM_scanset scan)
2271 {
2272     if (!scan)
2273         return;
2274     (scan->refcount)--;
2275     if (scan->refcount == 0)
2276     {
2277         odr_destroy (scan->odr);
2278
2279         ZOOM_options_destroy (scan->options);
2280         xfree (scan);
2281     }
2282 }
2283
2284 static zoom_ret send_package (ZOOM_connection c)
2285 {
2286     ZOOM_Event event;
2287
2288     yaz_log(log_details, "%p send_package", c);
2289     if (!c->tasks)
2290         return zoom_complete;
2291     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2292
2293     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2294     ZOOM_connection_put_event (c, event);
2295
2296     return do_write_ex (c, c->tasks->u.package->buf_out,
2297                         c->tasks->u.package->len_out);
2298 }
2299
2300 static zoom_ret send_scan (ZOOM_connection c)
2301 {
2302     ZOOM_scanset scan;
2303     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2304     Z_ScanRequest *req = apdu->u.scanRequest;
2305
2306     yaz_log(log_details, "%p send_scan", c);
2307     if (!c->tasks)
2308         return zoom_complete;
2309     assert (c->tasks->which == ZOOM_TASK_SCAN);
2310     scan = c->tasks->u.scan.scan;
2311
2312     req->termListAndStartPoint = scan->termListAndStartPoint;
2313     req->attributeSet = scan->attributeSet;
2314
2315     *req->numberOfTermsRequested =
2316         ZOOM_options_get_int(scan->options, "number", 10);
2317
2318     req->preferredPositionInResponse =
2319         odr_intdup (c->odr_out,
2320                     ZOOM_options_get_int(scan->options, "position", 1));
2321
2322     req->stepSize =
2323         odr_intdup (c->odr_out,
2324                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2325
2326     req->databaseNames = set_DatabaseNames (c, scan->options,
2327                                             &req->num_databaseNames);
2328
2329     return send_APDU (c, apdu);
2330 }
2331
2332 ZOOM_API(size_t)
2333 ZOOM_scanset_size (ZOOM_scanset scan)
2334 {
2335     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2336         return 0;
2337     return scan->scan_response->entries->num_entries;
2338 }
2339
2340 ZOOM_API(const char *)
2341 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2342                    int *occ, int *len)
2343 {
2344     const char *term = 0;
2345     size_t noent = ZOOM_scanset_size (scan);
2346     Z_ScanResponse *res = scan->scan_response;
2347
2348     *len = 0;
2349     *occ = 0;
2350     if (pos >= noent)
2351         return 0;
2352     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2353     {
2354         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2355
2356         if (t->term->which == Z_Term_general)
2357         {
2358             term = (const char *) t->term->u.general->buf;
2359             *len = t->term->u.general->len;
2360         }
2361         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2362     }
2363     return term;
2364 }
2365
2366 ZOOM_API(const char *)
2367 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2368                            int *occ, int *len)
2369 {
2370     const char *term = 0;
2371     size_t noent = ZOOM_scanset_size (scan);
2372     Z_ScanResponse *res = scan->scan_response;
2373
2374     *len = 0;
2375     *occ = 0;
2376     if (pos >= noent)
2377         return 0;
2378     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2379     {
2380         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2381
2382         if (t->displayTerm)
2383         {
2384             term = t->displayTerm;
2385             *len = strlen(term);
2386         }
2387         else if (t->term->which == Z_Term_general)
2388         {
2389             term = (const char *) t->term->u.general->buf;
2390             *len = t->term->u.general->len;
2391         }
2392         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2393     }
2394     return term;
2395 }
2396
2397 ZOOM_API(const char *)
2398 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2399 {
2400     return ZOOM_options_get (scan->options, key);
2401 }
2402
2403 ZOOM_API(void)
2404 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2405                               const char *val)
2406 {
2407     ZOOM_options_set (scan->options, key, val);
2408 }
2409
2410 static Z_APDU *create_es_package (ZOOM_package p, int type)
2411 {
2412     const char *str;
2413     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2414     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2415
2416     *req->function = Z_ExtendedServicesRequest_create;
2417
2418     str = ZOOM_options_get(p->options, "package-name");
2419     if (str && *str)
2420         req->packageName = nmem_strdup (p->odr_out->mem, str);
2421
2422     str = ZOOM_options_get(p->options, "user-id");
2423     if (str)
2424         req->userId = nmem_strdup (p->odr_out->mem, str);
2425
2426     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2427                                               type);
2428
2429     str = ZOOM_options_get(p->options, "function");
2430     if (str)
2431     {
2432         if (!strcmp (str, "create"))
2433             *req->function = 1;
2434         if (!strcmp (str, "delete"))
2435             *req->function = 2;
2436         if (!strcmp (str, "modify"))
2437             *req->function = 3;
2438     }
2439     return apdu;
2440 }
2441
2442 static const char *ill_array_lookup (void *clientData, const char *idx)
2443 {
2444     ZOOM_package p = (ZOOM_package) clientData;
2445     return ZOOM_options_get (p->options, idx+4);
2446 }
2447
2448 static Z_External *encode_ill_request (ZOOM_package p)
2449 {
2450     ODR out = p->odr_out;
2451     ILL_Request *req;
2452     Z_External *r = 0;
2453     struct ill_get_ctl ctl;
2454
2455     ctl.odr = p->odr_out;
2456     ctl.clientData = p;
2457     ctl.f = ill_array_lookup;
2458
2459     req = ill_get_ILLRequest(&ctl, "ill", 0);
2460
2461     if (!ill_Request (out, &req, 0, 0))
2462     {
2463         int ill_request_size;
2464         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2465         if (ill_request_buf)
2466             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2467         return 0;
2468     }
2469     else
2470     {
2471         oident oid;
2472         int illRequest_size = 0;
2473         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2474
2475         oid.proto = PROTO_GENERAL;
2476         oid.oclass = CLASS_GENERAL;
2477         oid.value = VAL_ISO_ILL_1;
2478
2479         r = (Z_External *) odr_malloc (out, sizeof(*r));
2480         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2481         r->indirect_reference = 0;
2482         r->descriptor = 0;
2483         r->which = Z_External_single;
2484
2485         r->u.single_ASN1_type = (Odr_oct *)
2486             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2487         r->u.single_ASN1_type->buf = (unsigned char*)
2488             odr_malloc (out, illRequest_size);
2489         r->u.single_ASN1_type->len = illRequest_size;
2490         r->u.single_ASN1_type->size = illRequest_size;
2491         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2492     }
2493     return r;
2494 }
2495
2496 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2497 {
2498     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2499     const char *str;
2500
2501     req->which = Z_IOItemOrder_esRequest;
2502     req->u.esRequest = (Z_IORequest *)
2503         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2504
2505     /* to keep part ... */
2506     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2507         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2508     req->u.esRequest->toKeep->supplDescription = 0;
2509     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2510         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2511
2512     str = ZOOM_options_get(p->options, "contact-name");
2513     req->u.esRequest->toKeep->contact->name = str ?
2514         nmem_strdup (p->odr_out->mem, str) : 0;
2515
2516     str = ZOOM_options_get(p->options, "contact-phone");
2517     req->u.esRequest->toKeep->contact->phone = str ?
2518         nmem_strdup (p->odr_out->mem, str) : 0;
2519
2520     str = ZOOM_options_get(p->options, "contact-email");
2521     req->u.esRequest->toKeep->contact->email = str ?
2522         nmem_strdup (p->odr_out->mem, str) : 0;
2523
2524     req->u.esRequest->toKeep->addlBilling = 0;
2525
2526     /* not to keep part ... */
2527     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2528         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2529
2530     str = ZOOM_options_get(p->options, "itemorder-setname");
2531     if (!str)
2532         str = "default";
2533
2534     if (!*str)
2535         req->u.esRequest->notToKeep->resultSetItem = 0;
2536     else
2537     {
2538         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2539            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2540
2541         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2542            nmem_strdup (p->odr_out->mem, str);
2543         req->u.esRequest->notToKeep->resultSetItem->item =
2544             (int *) odr_malloc(p->odr_out, sizeof(int));
2545
2546         str = ZOOM_options_get(p->options, "itemorder-item");
2547         *req->u.esRequest->notToKeep->resultSetItem->item =
2548             (str ? atoi(str) : 1);
2549     }
2550     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2551
2552     return req;
2553 }
2554
2555 Z_APDU *create_admin_package(ZOOM_package p, int type,
2556                              Z_ESAdminOriginPartToKeep **toKeepP,
2557                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2558 {
2559     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2560     if (apdu)
2561     {
2562         Z_ESAdminOriginPartToKeep  *toKeep;
2563         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2564         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2565         const char *first_db = "Default";
2566         int num_db;
2567         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2568         if (num_db > 0)
2569             first_db = db[0];
2570
2571         r->direct_reference =
2572             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2573                                    VAL_ADMINSERVICE);
2574         r->descriptor = 0;
2575         r->indirect_reference = 0;
2576         r->which = Z_External_ESAdmin;
2577
2578         r->u.adminService = (Z_Admin *)
2579             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2580         r->u.adminService->which = Z_Admin_esRequest;
2581         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2582             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2583
2584         toKeep = r->u.adminService->u.esRequest->toKeep =
2585             (Z_ESAdminOriginPartToKeep *)
2586             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2587         toKeep->which = type;
2588         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2589         toKeep->u.create = odr_nullval();
2590         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2591
2592         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2593             (Z_ESAdminOriginPartNotToKeep *)
2594             odr_malloc(p->odr_out,
2595                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2596         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2597         notToKeep->u.recordsWillFollow = odr_nullval();
2598         if (toKeepP)
2599             *toKeepP = toKeep;
2600         if (notToKeepP)
2601             *notToKeepP = notToKeep;
2602     }
2603     return apdu;
2604 }
2605
2606 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2607 {
2608     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2609     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2610     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2611     const char *doc = ZOOM_options_get(p->options, "doc");
2612
2613     req->taskSpecificParameters = ext;
2614     ext->direct_reference = req->packageType;
2615     ext->descriptor = 0;
2616     ext->indirect_reference = 0;
2617
2618     ext->which = Z_External_octet;
2619     ext->u.single_ASN1_type = (Odr_oct *)
2620         odr_malloc (p->odr_out, sizeof(Odr_oct));
2621
2622     if (!doc)
2623         doc = "";
2624     ext->u.single_ASN1_type->buf = (unsigned char*)
2625         odr_strdup(p->odr_out, doc);
2626     ext->u.single_ASN1_type->size = ext->u.single_ASN1_type->len = strlen(doc);
2627     return apdu;
2628 }
2629
2630 static Z_APDU *create_update_package(ZOOM_package p)
2631 {
2632     Z_APDU *apdu = 0;
2633     const char *first_db = "Default";
2634     int num_db;
2635     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2636     const char *action = ZOOM_options_get(p->options, "action");
2637     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2638     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2639     const char *record_buf = ZOOM_options_get(p->options, "record");
2640     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2641     int syntax_oid = VAL_NONE;
2642     int action_no = -1;
2643
2644     if (syntax_str)
2645         syntax_oid = oid_getvalbyname(syntax_str);
2646     if (!record_buf)
2647     {
2648         record_buf = "void";
2649         syntax_oid = VAL_SUTRS;
2650     }
2651     if (syntax_oid == VAL_NONE)
2652         syntax_oid = VAL_TEXT_XML;
2653
2654     if (num_db > 0)
2655         first_db = db[0];
2656
2657     if (!action)
2658         action = "specialUpdate";
2659
2660     if (!strcmp(action, "recordInsert"))
2661         action_no = Z_IUOriginPartToKeep_recordInsert;
2662     else if (!strcmp(action, "recordReplace"))
2663         action_no = Z_IUOriginPartToKeep_recordReplace;
2664     else if (!strcmp(action, "recordDelete"))
2665         action_no = Z_IUOriginPartToKeep_recordDelete;
2666     else if (!strcmp(action, "elementUpdate"))
2667         action_no = Z_IUOriginPartToKeep_elementUpdate;
2668     else if (!strcmp(action, "specialUpdate"))
2669         action_no = Z_IUOriginPartToKeep_specialUpdate;
2670     else
2671         return 0;
2672
2673     apdu = create_es_package (p, VAL_DBUPDATE);
2674     if (apdu)
2675     {
2676         Z_IUOriginPartToKeep *toKeep;
2677         Z_IUSuppliedRecords *notToKeep;
2678         Z_External *r = (Z_External *)
2679             odr_malloc (p->odr_out, sizeof(*r));
2680
2681         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2682
2683         r->direct_reference =
2684             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2685                                    VAL_DBUPDATE);
2686         r->descriptor = 0;
2687         r->which = Z_External_update;
2688         r->indirect_reference = 0;
2689         r->u.update = (Z_IUUpdate *)
2690             odr_malloc(p->odr_out, sizeof(*r->u.update));
2691
2692         r->u.update->which = Z_IUUpdate_esRequest;
2693         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2694             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2695         toKeep = r->u.update->u.esRequest->toKeep =
2696             (Z_IUOriginPartToKeep *)
2697             odr_malloc(p->odr_out, sizeof(*toKeep));
2698
2699         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2700         toKeep->schema = 0;
2701         toKeep->elementSetName = 0;
2702         toKeep->actionQualifier = 0;
2703         toKeep->action = odr_intdup(p->odr_out, action_no);
2704
2705         notToKeep = r->u.update->u.esRequest->notToKeep =
2706             (Z_IUSuppliedRecords *)
2707             odr_malloc(p->odr_out, sizeof(*notToKeep));
2708         notToKeep->num = 1;
2709         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2710             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2711         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2712             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2713         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2714         if (recordIdOpaque)
2715         {
2716             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2717                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2718             notToKeep->elements[0]->u.opaque->size =
2719                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2720             notToKeep->elements[0]->u.opaque->buf = (unsigned char*)
2721                 odr_strdup(p->odr_out, recordIdOpaque);
2722         }
2723         else if (recordIdNumber)
2724         {
2725             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2726
2727             notToKeep->elements[0]->u.number =
2728                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2729         }
2730         else
2731             notToKeep->elements[0]->u.opaque = 0;
2732         notToKeep->elements[0]->supplementalId = 0;
2733         notToKeep->elements[0]->correlationInfo = 0;
2734         notToKeep->elements[0]->record =
2735             z_ext_record(p->odr_out, syntax_oid,
2736                          record_buf, strlen(record_buf));
2737     }
2738     if (0 && apdu)
2739     {
2740        ODR print = odr_createmem(ODR_PRINT);
2741
2742        z_APDU(print, &apdu, 0, 0);
2743        odr_destroy(print);
2744     }
2745     return apdu;
2746 }
2747
2748 ZOOM_API(void)
2749     ZOOM_package_send (ZOOM_package p, const char *type)
2750 {
2751     Z_APDU *apdu = 0;
2752     ZOOM_connection c;
2753     if (!p)
2754         return;
2755     c = p->connection;
2756     odr_reset (p->odr_out);
2757     xfree (p->buf_out);
2758     p->buf_out = 0;
2759     if (!strcmp(type, "itemorder"))
2760     {
2761         apdu = create_es_package (p, VAL_ITEMORDER);
2762         if (apdu)
2763         {
2764             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2765
2766             r->direct_reference =
2767                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2768                                        VAL_ITEMORDER);
2769             r->descriptor = 0;
2770             r->which = Z_External_itemOrder;
2771             r->indirect_reference = 0;
2772             r->u.itemOrder = encode_item_order (p);
2773
2774             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2775         }
2776     }
2777     else if (!strcmp(type, "create"))  /* create database */
2778     {
2779         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2780                                     0, 0);
2781     }
2782     else if (!strcmp(type, "drop"))  /* drop database */
2783     {
2784         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2785                                     0, 0);
2786     }
2787     else if (!strcmp(type, "commit"))  /* commit changes */
2788     {
2789         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
2790                                     0, 0);
2791     }
2792     else if (!strcmp(type, "update")) /* update record(s) */
2793     {
2794         apdu = create_update_package(p);
2795     }
2796     else if (!strcmp(type, "xmlupdate"))
2797     {
2798         apdu = create_xmlupdate_package(p);
2799     }
2800     if (apdu)
2801     {
2802         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2803         {
2804             char *buf;
2805
2806             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2807             task->u.package = p;
2808             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2809             p->buf_out = (char *) xmalloc (p->len_out);
2810             memcpy (p->buf_out, buf, p->len_out);
2811
2812             (p->refcount)++;
2813             if (!c->async)
2814             {
2815                 while (ZOOM_event (1, &c))
2816                     ;
2817             }
2818         }
2819     }
2820 }
2821
2822 ZOOM_API(ZOOM_package)
2823     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2824 {
2825     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2826
2827     p->connection = c;
2828     p->odr_out = odr_createmem (ODR_ENCODE);
2829     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2830     p->refcount = 1;
2831     p->buf_out = 0;
2832     p->len_out = 0;
2833     return p;
2834 }
2835
2836 ZOOM_API(void)
2837     ZOOM_package_destroy(ZOOM_package p)
2838 {
2839     if (!p)
2840         return;
2841     (p->refcount)--;
2842     if (p->refcount == 0)
2843     {
2844         odr_destroy (p->odr_out);
2845         xfree (p->buf_out);
2846
2847         ZOOM_options_destroy (p->options);
2848         xfree (p);
2849     }
2850 }
2851
2852 ZOOM_API(const char *)
2853 ZOOM_package_option_get (ZOOM_package p, const char *key)
2854 {
2855     return ZOOM_options_get (p->options, key);
2856 }
2857
2858
2859 ZOOM_API(void)
2860 ZOOM_package_option_set (ZOOM_package p, const char *key,
2861                               const char *val)
2862 {
2863     ZOOM_options_set (p->options, key, val);
2864 }
2865
2866 static int ZOOM_connection_exec_task (ZOOM_connection c)
2867 {
2868     ZOOM_task task = c->tasks;
2869     zoom_ret ret = zoom_complete;
2870
2871     if (!task)
2872         return 0;
2873     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
2874              c, task->which, task->running);
2875     if (c->error != ZOOM_ERROR_NONE)
2876     {
2877         yaz_log(log_details, "%p ZOOM_connection_exec_task "
2878                 "removing tasks because of error = %d", c, c->error);
2879         ZOOM_connection_remove_tasks (c);
2880         return 0;
2881     }
2882     if (task->running)
2883     {
2884         yaz_log(log_details, "%p ZOOM_connection_exec_task "
2885                  "task already running", c);
2886         return 0;
2887     }
2888     task->running = 1;
2889     ret = zoom_complete;
2890     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2891     {
2892         switch (task->which)
2893         {
2894         case ZOOM_TASK_SEARCH:
2895             if (c->proto == PROTO_HTTP)
2896                 ret = ZOOM_connection_srw_send_search(c);
2897             else
2898                 ret = ZOOM_connection_send_search(c);
2899             break;
2900         case ZOOM_TASK_RETRIEVE:
2901             if (c->proto == PROTO_HTTP)
2902                 ret = ZOOM_connection_srw_send_search(c);
2903             else
2904                 ret = send_present (c);
2905             break;
2906         case ZOOM_TASK_CONNECT:
2907             ret = do_connect(c);
2908             break;
2909         case ZOOM_TASK_SCAN:
2910             ret = send_scan(c);
2911             break;
2912         case ZOOM_TASK_PACKAGE:
2913             ret = send_package(c);
2914             break;
2915         case ZOOM_TASK_SORT:
2916             c->tasks->u.sort.resultset->r_sort_spec =
2917                 c->tasks->u.sort.q->sort_spec;
2918             ret = send_sort(c, c->tasks->u.sort.resultset);
2919             break;
2920         }
2921     }
2922     else
2923     {
2924         yaz_log(log_details, "%p ZOOM_connection_exec_task "
2925                 "remove tasks because no connection exist", c);
2926         ZOOM_connection_remove_tasks (c);
2927     }
2928     if (ret == zoom_complete)
2929     {
2930         yaz_log(log_details, "%p ZOOM_connection_exec_task "
2931                  "task removed (complete)", c);
2932         ZOOM_connection_remove_task (c);
2933         return 0;
2934     }
2935     yaz_log(log_details, "%p ZOOM_connection_exec_task "
2936             "task pending", c);
2937     return 1;
2938 }
2939
2940 static zoom_ret send_sort_present (ZOOM_connection c)
2941 {
2942     zoom_ret r = zoom_complete;
2943
2944     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
2945         r = send_sort (c, c->tasks->u.search.resultset);
2946     if (r == zoom_complete)
2947         r = send_present (c);
2948     return r;
2949 }
2950
2951 static int es_response (ZOOM_connection c,
2952                         Z_ExtendedServicesResponse *res)
2953 {
2954     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2955         return 0;
2956     if (res->diagnostics && res->num_diagnostics > 0)
2957         response_diag(c, res->diagnostics[0]);
2958     if (res->taskPackage &&
2959         res->taskPackage->which == Z_External_extendedService)
2960     {
2961         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2962         Odr_oct *id = taskPackage->targetReference;
2963
2964         if (id)
2965             ZOOM_options_setl (c->tasks->u.package->options,
2966                                "targetReference", (char*) id->buf, id->len);
2967     }
2968     if (res->taskPackage &&
2969         res->taskPackage->which == Z_External_octet)
2970     {
2971         Odr_oct *doc = res->taskPackage->u.octet_aligned;
2972         ZOOM_options_setl (c->tasks->u.package->options,
2973                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
2974     }
2975     return 1;
2976 }
2977
2978 static void interpret_init_diag(ZOOM_connection c,
2979                                 Z_DiagnosticFormat *diag)
2980 {
2981     if (diag->num > 0)
2982     {
2983         Z_DiagnosticFormat_s *ds = diag->elements[0];
2984         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
2985             response_default_diag(c, ds->u.defaultDiagRec);
2986     }
2987 }
2988
2989
2990 static void interpret_otherinformation_field(ZOOM_connection c,
2991                                              Z_OtherInformation *ui)
2992 {
2993     int i;
2994     for (i = 0; i < ui->num_elements; i++)
2995     {
2996         Z_OtherInformationUnit *unit = ui->list[i];
2997         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
2998             unit->information.externallyDefinedInfo &&
2999             unit->information.externallyDefinedInfo->which ==
3000             Z_External_diag1)
3001         {
3002             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3003         }
3004     }
3005 }
3006
3007 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3008 {
3009     Z_InitResponse *initrs;
3010
3011     c->mask = 0;
3012     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3013     switch(apdu->which)
3014     {
3015     case Z_APDU_initResponse:
3016         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3017         initrs = apdu->u.initResponse;
3018         ZOOM_connection_option_set(c, "serverImplementationId",
3019                                    initrs->implementationId ?
3020                                    initrs->implementationId : "");
3021         ZOOM_connection_option_set(c, "serverImplementationName",
3022                                    initrs->implementationName ?
3023                                    initrs->implementationName : "");
3024         ZOOM_connection_option_set(c, "serverImplementationVersion",
3025                                    initrs->implementationVersion ?
3026                                    initrs->implementationVersion : "");
3027         /* Set the three old options too, for old applications */
3028         ZOOM_connection_option_set(c, "targetImplementationId",
3029                                    initrs->implementationId ?
3030                                    initrs->implementationId : "");
3031         ZOOM_connection_option_set(c, "targetImplementationName",
3032                                    initrs->implementationName ?
3033                                    initrs->implementationName : "");
3034         ZOOM_connection_option_set(c, "targetImplementationVersion",
3035                                    initrs->implementationVersion ?
3036                                    initrs->implementationVersion : "");
3037         if (!*initrs->result)
3038         {
3039             Z_External *uif = initrs->userInformationField;
3040
3041             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3042
3043             if (uif && uif->which == Z_External_userInfo1)
3044                 interpret_otherinformation_field(c, uif->u.userInfo1);
3045         }
3046         else
3047         {
3048             char *cookie =
3049                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3050                                           VAL_COOKIE, 1, 0);
3051             xfree (c->cookie_in);
3052             c->cookie_in = 0;
3053             if (cookie)
3054                 c->cookie_in = xstrdup(cookie);
3055             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3056                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3057                 c->support_named_resultsets = 1;
3058             if (c->tasks)
3059             {
3060                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3061                 ZOOM_connection_remove_task (c);
3062             }
3063             ZOOM_connection_exec_task (c);
3064         }
3065         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3066         {
3067             NMEM tmpmem = nmem_create();
3068             Z_CharSetandLanguageNegotiation *p =
3069                 yaz_get_charneg_record(initrs->otherInfo);
3070
3071             if (p)
3072             {
3073                 char *charset = NULL, *lang = NULL;
3074                 int sel;
3075
3076                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3077                 yaz_log(log_details, "%p recv_apdu target accepted: "
3078                         "charset %s, language %s, select %d",
3079                         c,
3080                         charset ? charset : "none", lang ? lang : "none", sel);
3081                 if (charset)
3082                     ZOOM_connection_option_set (c, "negotiation-charset",
3083                                                 charset);
3084                 if (lang)
3085                     ZOOM_connection_option_set (c, "negotiation-lang",
3086                                                 lang);
3087
3088                 ZOOM_connection_option_set (
3089                     c,  "negotiation-charset-in-effect-for-records",
3090                     (sel != 0) ? "1" : "0");
3091                 nmem_destroy(tmpmem);
3092             }
3093         }
3094         break;
3095     case Z_APDU_searchResponse:
3096         yaz_log(log_api, "%p recv_apdu Search response", c);
3097         handle_search_response (c, apdu->u.searchResponse);
3098         if (send_sort_present (c) == zoom_complete)
3099             ZOOM_connection_remove_task (c);
3100         break;
3101     case Z_APDU_presentResponse:
3102         yaz_log(log_api, "%p recv_apdu Present response", c);
3103         handle_present_response (c, apdu->u.presentResponse);
3104         if (send_present (c) == zoom_complete)
3105             ZOOM_connection_remove_task (c);
3106         break;
3107     case Z_APDU_sortResponse:
3108         yaz_log(log_api, "%p recv_apdu Sort response", c);
3109         sort_response (c, apdu->u.sortResponse);
3110         if (send_present (c) == zoom_complete)
3111             ZOOM_connection_remove_task (c);
3112         break;
3113     case Z_APDU_scanResponse:
3114         yaz_log(log_api, "%p recv_apdu Scan response", c);
3115         scan_response (c, apdu->u.scanResponse);
3116         ZOOM_connection_remove_task (c);
3117         break;
3118     case Z_APDU_extendedServicesResponse:
3119         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3120         es_response (c, apdu->u.extendedServicesResponse);
3121         ZOOM_connection_remove_task (c);
3122         break;
3123     case Z_APDU_close:
3124         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3125         if (c->reconnect_ok)
3126         {
3127             do_close(c);
3128             c->tasks->running = 0;
3129             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3130         }
3131         else
3132         {
3133             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3134             do_close(c);
3135         }
3136         break;
3137     default:
3138         yaz_log(log_api, "%p Received unknown PDU", c);
3139         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3140         do_close(c);
3141     }
3142 }
3143
3144 #if HAVE_XML2
3145 static void handle_srw_response(ZOOM_connection c,
3146                                 Z_SRW_searchRetrieveResponse *res)
3147 {
3148     ZOOM_resultset resultset = 0;
3149     int i;
3150     NMEM nmem;
3151     ZOOM_Event event;
3152
3153     if (!c->tasks)
3154         return;
3155
3156     if (c->tasks->which == ZOOM_TASK_SEARCH)
3157         resultset = c->tasks->u.search.resultset;
3158     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3159         resultset = c->tasks->u.retrieve.resultset;
3160     else
3161         return ;
3162
3163     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3164     ZOOM_connection_put_event(c, event);
3165
3166     resultset->size = 0;
3167
3168     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3169
3170     if (res->numberOfRecords)
3171         resultset->size = *res->numberOfRecords;
3172
3173     for (i = 0; i<res->num_records; i++)
3174     {
3175         int pos;
3176
3177         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3178             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3179
3180         if (res->records[i].recordPosition &&
3181             *res->records[i].recordPosition > 0)
3182             pos = *res->records[i].recordPosition - 1;
3183         else
3184             pos = resultset->start + i;
3185
3186         npr->databaseName = 0;
3187         npr->which = Z_NamePlusRecord_databaseRecord;
3188         npr->u.databaseRecord = (Z_External *)
3189             odr_malloc(c->odr_in, sizeof(Z_External));
3190         npr->u.databaseRecord->descriptor = 0;
3191         npr->u.databaseRecord->direct_reference =
3192             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3193         npr->u.databaseRecord->which = Z_External_octet;
3194         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3195             odr_malloc(c->odr_in, sizeof(Odr_oct));
3196         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3197             res->records[i].recordData_buf;
3198         npr->u.databaseRecord->u.octet_aligned->len =
3199             npr->u.databaseRecord->u.octet_aligned->size =
3200             res->records[i].recordData_len;
3201         record_cache_add (resultset, npr, pos);
3202     }
3203     if (res->num_diagnostics > 0)
3204     {
3205         const char *uri = res->diagnostics[0].uri;
3206         if (uri)
3207         {
3208             int code = 0;
3209             const char *cp;
3210             if ((cp = strrchr(uri, '/')))
3211                 code = atoi(cp+1);
3212             set_dset_error(c, code, uri,
3213                            res->diagnostics[0].details, 0);
3214         }
3215     }
3216     nmem = odr_extract_mem(c->odr_in);
3217     nmem_transfer(resultset->odr->mem, nmem);
3218     nmem_destroy(nmem);
3219 }
3220 #endif
3221
3222 #if HAVE_XML2
3223 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3224 {
3225     int ret = -1;
3226     const char *content_type = z_HTTP_header_lookup(hres->headers,
3227                                                     "Content-Type");
3228     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3229                                                        "Connection");
3230     c->mask = 0;
3231     yaz_log(log_details, "%p handle_http", c);
3232
3233     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3234     {
3235         Z_SOAP *soap_package = 0;
3236         ODR o = c->odr_in;
3237         Z_SOAP_Handler soap_handlers[2] = {
3238             {"http://www.loc.gov/zing/srw/", 0,
3239              (Z_SOAP_fun) yaz_srw_codec},
3240             {0, 0, 0}
3241         };
3242         ret = z_soap_codec(o, &soap_package,
3243                            &hres->content_buf, &hres->content_len,
3244                            soap_handlers);
3245         if (!ret && soap_package->which == Z_SOAP_generic &&
3246             soap_package->u.generic->no == 0)
3247         {
3248             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3249             if (sr->which == Z_SRW_searchRetrieve_response)
3250                 handle_srw_response(c, sr->u.response);
3251             else
3252                 ret = -1;
3253         }
3254         else if (!ret && (soap_package->which == Z_SOAP_fault
3255                           || soap_package->which == Z_SOAP_error))
3256         {
3257             set_HTTP_error(c, hres->code,
3258                            soap_package->u.fault->fault_code,
3259                            soap_package->u.fault->fault_string);
3260         }
3261         else
3262             ret = -1;
3263     }
3264     if (ret)
3265     {
3266         if (hres->code != 200)
3267             set_HTTP_error(c, hres->code, 0, 0);
3268         else
3269             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3270         do_close (c);
3271     }
3272     ZOOM_connection_remove_task(c);
3273     if (!strcmp(hres->version, "1.0"))
3274     {
3275         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3276         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3277             do_close(c);
3278     }
3279     else
3280     {
3281         /* HTTP 1.1: only if no close we stay alive .. */
3282         if (connection_head && !strcmp(connection_head, "close"))
3283             do_close(c);
3284     }
3285 }
3286 #endif
3287
3288 static int do_read (ZOOM_connection c)
3289 {
3290     int r, more;
3291     ZOOM_Event event;
3292
3293     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3294     ZOOM_connection_put_event (c, event);
3295
3296     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3297     more = cs_more(c->cs);
3298     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3299     if (r == 1)
3300         return 0;
3301     if (r <= 0)
3302     {
3303         if (c->reconnect_ok)
3304         {
3305             do_close (c);
3306             c->reconnect_ok = 0;
3307             yaz_log(log_details, "%p do_read reconnect read", c);
3308             c->tasks->running = 0;
3309             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3310         }
3311         else
3312         {
3313             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3314             do_close (c);
3315         }
3316     }
3317     else
3318     {
3319         Z_GDU *gdu;
3320         ZOOM_Event event;
3321
3322         odr_reset (c->odr_in);
3323         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3324         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3325         ZOOM_connection_put_event (c, event);
3326
3327         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3328         {
3329             int x;
3330             int err = odr_geterrorx(c->odr_in, &x);
3331             char msg[60];
3332             const char *element = odr_getelement(c->odr_in);
3333             sprintf (msg, "ODR code %d:%d element=%-20s",
3334                      err, x, element ? element : "<unknown>");
3335             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3336             do_close (c);
3337         }
3338         else if (gdu->which == Z_GDU_Z3950)
3339             recv_apdu (c, gdu->u.z3950);
3340         else if (gdu->which == Z_GDU_HTTP_Response)
3341         {
3342 #if HAVE_XML2
3343             handle_http (c, gdu->u.HTTP_Response);
3344 #else
3345             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3346             do_close (c);
3347 #endif
3348         }
3349         c->reconnect_ok = 0;
3350     }
3351     return 1;
3352 }
3353
3354 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3355 {
3356     int r;
3357     ZOOM_Event event;
3358
3359     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3360     ZOOM_connection_put_event (c, event);
3361
3362     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3363     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3364     {
3365         yaz_log(log_details, "%p do_write_ex write failed", c);
3366         if (c->reconnect_ok)
3367         {
3368             do_close (c);
3369             c->reconnect_ok = 0;
3370             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3371             c->tasks->running = 0;
3372             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3373             return zoom_pending;
3374         }
3375         if (c->state == STATE_CONNECTING)
3376             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3377         else
3378             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3379         do_close (c);
3380         return zoom_complete;
3381     }
3382     else if (r == 1)
3383     {
3384         c->mask = ZOOM_SELECT_EXCEPT;
3385         if (c->cs->io_pending & CS_WANT_WRITE)
3386             c->mask += ZOOM_SELECT_WRITE;
3387         if (c->cs->io_pending & CS_WANT_READ)
3388             c->mask += ZOOM_SELECT_READ;
3389         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3390                 c, c->mask);
3391     }
3392     else
3393     {
3394         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3395         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3396                 c, c->mask);
3397     }
3398     return zoom_pending;
3399 }
3400
3401 static zoom_ret do_write(ZOOM_connection c)
3402 {
3403     return do_write_ex (c, c->buf_out, c->len_out);
3404 }
3405
3406
3407 ZOOM_API(const char *)
3408 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3409 {
3410     return ZOOM_options_get (c->options, key);
3411 }
3412
3413 ZOOM_API(void)
3414 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3415                             const char *val)
3416 {
3417     ZOOM_options_set (c->options, key, val);
3418 }
3419
3420 ZOOM_API(void)
3421 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3422                              const char *val, int len)
3423 {
3424     ZOOM_options_setl (c->options, key, val, len);
3425 }
3426
3427 ZOOM_API(const char *)
3428 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3429 {
3430     return ZOOM_options_get (r->options, key);
3431 }
3432
3433 ZOOM_API(void)
3434 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3435                                   const char *val)
3436 {
3437     ZOOM_options_set (r->options, key, val);
3438 }
3439
3440
3441 ZOOM_API(int)
3442 ZOOM_connection_errcode (ZOOM_connection c)
3443 {
3444     return ZOOM_connection_error (c, 0, 0);
3445 }
3446
3447 ZOOM_API(const char *)
3448 ZOOM_connection_errmsg (ZOOM_connection c)
3449 {
3450     const char *msg;
3451     ZOOM_connection_error (c, &msg, 0);
3452     return msg;
3453 }
3454
3455 ZOOM_API(const char *)
3456 ZOOM_connection_addinfo (ZOOM_connection c)
3457 {
3458     const char *addinfo;
3459     ZOOM_connection_error (c, 0, &addinfo);
3460     return addinfo;
3461 }
3462
3463 ZOOM_API(const char *)
3464 ZOOM_diag_str (int error)
3465 {
3466     switch (error)
3467     {
3468     case ZOOM_ERROR_NONE:
3469         return "No error";
3470     case ZOOM_ERROR_CONNECT:
3471         return "Connect failed";
3472     case ZOOM_ERROR_MEMORY:
3473         return "Out of memory";
3474     case ZOOM_ERROR_ENCODE:
3475         return "Encoding failed";
3476     case ZOOM_ERROR_DECODE:
3477         return "Decoding failed";
3478     case ZOOM_ERROR_CONNECTION_LOST:
3479         return "Connection lost";
3480     case ZOOM_ERROR_INIT:
3481         return "Init rejected";
3482     case ZOOM_ERROR_INTERNAL:
3483         return "Internal failure";
3484     case ZOOM_ERROR_TIMEOUT:
3485         return "Timeout";
3486     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3487         return "Unsupported protocol";
3488     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3489         return "Unsupported query type";
3490     case ZOOM_ERROR_INVALID_QUERY:
3491         return "Invalid query";
3492     default:
3493         return diagbib1_str (error);
3494     }
3495 }
3496
3497 ZOOM_API(int)
3498 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3499                          const char **addinfo, const char **diagset)
3500 {
3501     int error = c->error;
3502     if (cp)
3503     {
3504         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3505             *cp = ZOOM_diag_str(error);
3506         else if (!strcmp(c->diagset, "HTTP"))
3507             *cp = z_HTTP_errmsg(c->error);
3508         else if (!strcmp(c->diagset, "Bib-1"))
3509             *cp = ZOOM_diag_str(error);
3510         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3511             *cp = yaz_diag_srw_str(c->error);
3512         else
3513             *cp = "Unknown error and diagnostic set";
3514     }
3515     if (addinfo)
3516         *addinfo = c->addinfo ? c->addinfo : "";
3517     if (diagset)
3518         *diagset = c->diagset ? c->diagset : "";
3519     return c->error;
3520 }
3521
3522 ZOOM_API(int)
3523 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3524                        const char **addinfo)
3525 {
3526     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3527 }
3528
3529 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3530 {
3531     ZOOM_Event event = 0;
3532     int r = cs_look(c->cs);
3533     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3534              c, mask, r);
3535
3536     if (r == CS_NONE)
3537     {
3538         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3539         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3540         do_close (c);
3541         ZOOM_connection_put_event (c, event);
3542     }
3543     else if (r == CS_CONNECT)
3544     {
3545         int ret;
3546         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3547
3548         ret = cs_rcvconnect (c->cs);
3549         yaz_log(log_details, "%p ZOOM_connection_do_io "
3550                 "cs_rcvconnect returned %d", c, ret);
3551         if (ret == 1)
3552         {
3553             c->mask = ZOOM_SELECT_EXCEPT;
3554             if (c->cs->io_pending & CS_WANT_WRITE)
3555                 c->mask += ZOOM_SELECT_WRITE;
3556             if (c->cs->io_pending & CS_WANT_READ)
3557                 c->mask += ZOOM_SELECT_READ;
3558             ZOOM_connection_put_event (c, event);
3559         }
3560         else if (ret == 0)
3561         {
3562             ZOOM_connection_put_event (c, event);
3563             get_cert(c);
3564             if (c->proto == PROTO_Z3950)
3565                 ZOOM_connection_send_init(c);
3566             else
3567             {
3568                 /* no init request for SRW .. */
3569                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3570                 ZOOM_connection_remove_task (c);
3571                 c->mask = 0;
3572                 ZOOM_connection_exec_task (c);
3573             }
3574             c->state = STATE_ESTABLISHED;
3575         }
3576         else
3577         {
3578             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3579             do_close (c);
3580             ZOOM_connection_put_event (c, event);
3581         }
3582     }
3583     else
3584     {
3585         if (mask & ZOOM_SELECT_READ)
3586             do_read (c);
3587         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3588             do_write (c);
3589     }
3590     return 1;
3591 }
3592
3593 ZOOM_API(int)
3594 ZOOM_connection_last_event(ZOOM_connection cs)
3595 {
3596     if (!cs)
3597         return ZOOM_EVENT_NONE;
3598     return cs->last_event;
3599 }
3600
3601 ZOOM_API(int)
3602 ZOOM_event (int no, ZOOM_connection *cs)
3603 {
3604     int timeout = 30;      /* default timeout in seconds */
3605     int timeout_set = 0;   /* whether it was overriden at all */
3606 #if HAVE_SYS_POLL_H
3607     struct pollfd pollfds[1024];
3608     ZOOM_connection poll_cs[1024];
3609 #else
3610     struct timeval tv;
3611     fd_set input, output, except;
3612 #endif
3613     int i, r, nfds;
3614     int max_fd = 0;
3615
3616     for (i = 0; i<no; i++)
3617     {
3618         ZOOM_connection c = cs[i];
3619         ZOOM_Event event;
3620         if (c && (event = ZOOM_connection_get_event(c)))
3621         {
3622             ZOOM_Event_destroy (event);
3623             return i+1;
3624         }
3625     }
3626     for (i = 0; i<no; i++)
3627     {
3628         ZOOM_connection c = cs[i];
3629         ZOOM_Event event;
3630         if (c && ZOOM_connection_exec_task (c))
3631         {
3632             if ((event = ZOOM_connection_get_event(c)))
3633             {
3634                 ZOOM_Event_destroy (event);
3635                 return i+1;
3636             }
3637         }
3638     }
3639 #if HAVE_SYS_POLL_H
3640
3641 #else
3642     FD_ZERO (&input);
3643     FD_ZERO (&output);
3644     FD_ZERO (&except);
3645 #endif
3646     nfds = 0;
3647     for (i = 0; i<no; i++)
3648     {
3649         ZOOM_connection c = cs[i];
3650         int fd, mask;
3651         int this_timeout;
3652
3653         if (!c)
3654             continue;
3655         fd = z3950_connection_socket(c);
3656         mask = z3950_connection_mask(c);
3657
3658         if (fd == -1)
3659             continue;
3660         if (max_fd < fd)
3661             max_fd = fd;
3662
3663         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3664         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3665         if (this_timeout != -2)
3666         {
3667             /* ensure the minimum timeout is used */
3668             if (!timeout_set)
3669                 timeout = this_timeout;
3670             else if (this_timeout != -1 && this_timeout < timeout)
3671                 timeout = this_timeout;
3672             timeout_set = 1;
3673         }
3674 #if HAVE_SYS_POLL_H
3675         if (mask)
3676         {
3677             short poll_events = 0;
3678
3679             if (mask & ZOOM_SELECT_READ)
3680                 poll_events += POLLIN;
3681             if (mask & ZOOM_SELECT_WRITE)
3682                 poll_events += POLLOUT;
3683             if (mask & ZOOM_SELECT_EXCEPT)
3684                 poll_events += POLLERR;
3685             pollfds[nfds].fd = fd;
3686             pollfds[nfds].events = poll_events;
3687             pollfds[nfds].revents = 0;
3688             poll_cs[nfds] = c;
3689             nfds++;
3690         }
3691 #else
3692         if (mask & ZOOM_SELECT_READ)
3693         {
3694             FD_SET (fd, &input);
3695             nfds++;
3696         }
3697         if (mask & ZOOM_SELECT_WRITE)
3698         {
3699             FD_SET (fd, &output);
3700             nfds++;
3701         }
3702         if (mask & ZOOM_SELECT_EXCEPT)
3703         {
3704             FD_SET (fd, &except);
3705             nfds++;
3706         }
3707 #endif
3708     }
3709     if (!nfds)
3710         return 0;
3711
3712 #if HAVE_SYS_POLL_H
3713     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3714     for (i = 0; i<nfds; i++)
3715     {
3716         ZOOM_connection c = poll_cs[i];
3717         if (r && c->mask)
3718         {
3719             int mask = 0;
3720             if (pollfds[i].revents & POLLIN)
3721                 mask += ZOOM_SELECT_READ;
3722             if (pollfds[i].revents & POLLOUT)
3723                 mask += ZOOM_SELECT_WRITE;
3724             if (pollfds[i].revents & POLLERR)
3725                 mask += ZOOM_SELECT_EXCEPT;
3726             if (mask)
3727                 ZOOM_connection_do_io(c, mask);
3728         }
3729         else if (r == 0 && c->mask)
3730         {
3731             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3732             /* timeout and this connection was waiting */
3733             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3734             do_close (c);
3735             ZOOM_connection_put_event(c, event);
3736         }
3737     }
3738 #else
3739     tv.tv_sec = timeout;
3740     tv.tv_usec = 0;
3741     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
3742     for (i = 0; i<no; i++)
3743     {
3744         ZOOM_connection c = cs[i];
3745         int fd, mask;
3746
3747         if (!c)
3748             continue;
3749         fd = z3950_connection_socket(c);
3750         mask = 0;
3751         if (r && c->mask)
3752         {
3753             /* no timeout and real socket */
3754             if (FD_ISSET(fd, &input))
3755                 mask += ZOOM_SELECT_READ;
3756             if (FD_ISSET(fd, &output))
3757                 mask += ZOOM_SELECT_WRITE;
3758             if (FD_ISSET(fd, &except))
3759                 mask += ZOOM_SELECT_EXCEPT;
3760             if (mask)
3761                 ZOOM_connection_do_io(c, mask);
3762         }
3763         if (r == 0 && c->mask)
3764         {
3765             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3766             /* timeout and this connection was waiting */
3767             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3768             do_close (c);
3769             ZOOM_connection_put_event(c, event);
3770         }
3771     }
3772 #endif
3773     for (i = 0; i<no; i++)
3774     {
3775         ZOOM_connection c = cs[i];
3776         ZOOM_Event event;
3777         if (c && (event = ZOOM_connection_get_event(c)))
3778         {
3779             ZOOM_Event_destroy (event);
3780             return i+1;
3781         }
3782     }
3783     return 0;
3784 }
3785 /*
3786  * Local variables:
3787  * c-basic-offset: 4
3788  * indent-tabs-mode: nil
3789  * End:
3790  * vim: shiftwidth=4 tabstop=8 expandtab
3791  */
3792