src/zoom-c.c

   1 /*
   2  * Copyright (c) 2000-2004, Index Data
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.30 2004-10-02 13:28:26 adam Exp $
   6  *
   7  * ZOOM layer for C, connections, result sets, queries.
   8  */
   9 #include <assert.h>
  10 #include <string.h>
  11 #include "zoom-p.h"
  12
  13 #include <yaz/yaz-util.h>
  14 #include <yaz/xmalloc.h>
  15 #include <yaz/otherinfo.h>
  16 #include <yaz/log.h>
  17 #include <yaz/pquery.h>
  18 #include <yaz/marcdisp.h>
  19 #include <yaz/diagbib1.h>
  20 #include <yaz/charneg.h>
  21 #include <yaz/ill.h>
  22 #include <yaz/srw.h>
  23
  24 #if HAVE_SYS_POLL_H
  25 #include <sys/poll.h>
  26 #endif
  27
  28 typedef enum {
  29     zoom_pending,
  30     zoom_complete
  31 } zoom_ret;
  32
  33 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  34 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  35
  36 static ZOOM_Event ZOOM_Event_create (int kind)
  37 {
  38     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  39     event->kind = kind;
  40     event->next = 0;
  41     event->prev = 0;
  42     return event;
  43 }
  44
  45 static void ZOOM_Event_destroy (ZOOM_Event event)
  46 {
  47     xfree (event);
  48 }
  49
  50 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  51 {
  52     if (c->m_queue_back)
  53     {
  54         c->m_queue_back->prev = event;
  55         assert (c->m_queue_front);
  56     }
  57     else
  58     {
  59         assert (!c->m_queue_front);
  60         c->m_queue_front = event;
  61     }
  62     event->next = c->m_queue_back;
  63     event->prev = 0;
  64     c->m_queue_back = event;
  65 }
  66
  67 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
  68 {
  69     ZOOM_Event event = c->m_queue_front;
  70     if (!event)
  71     {
  72         c->last_event = ZOOM_EVENT_NONE;
  73         return 0;
  74     }
  75     assert (c->m_queue_back);
  76     c->m_queue_front = event->prev;
  77     if (c->m_queue_front)
  78     {
  79         assert (c->m_queue_back);
  80         c->m_queue_front->next = 0;
  81     }
  82     else
  83         c->m_queue_back = 0;
  84     c->last_event = event->kind;
  85     return event;
  86 }
  87
  88
  89 static void set_dset_error (ZOOM_connection c, int error,
  90                             const char *dset,
  91                             const char *addinfo, const char *addinfo2)
  92 {
  93     char *cp;
  94     xfree (c->addinfo);
  95     c->addinfo = 0;
  96     c->error = error;
  97     if (!c->diagset || strcmp(dset, c->diagset))
  98     {
  99         xfree(c->diagset);
 100         c->diagset = xstrdup(dset);
 101         /* remove integer part from SRW diagset .. */
 102         if ((cp = strrchr(c->diagset, '/')))
 103            *cp = '\0';
 104     }
 105     if (addinfo && addinfo2)
 106     {
 107         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 108         strcpy(c->addinfo, addinfo);
 109         strcat(c->addinfo, addinfo2);
 110     }
 111     else if (addinfo)
 112         c->addinfo = xstrdup(addinfo);
 113     if (error)
 114         yaz_log(LOG_DEBUG, "Error %s %s:%d %s %s",
 115                 c->host_port ? c->host_port : "<>", dset, error,
 116                 addinfo ? addinfo : "",
 117                 addinfo2 ? addinfo2 : "");
 118 }
 119
 120 #if HAVE_XML2
 121 static void set_HTTP_error (ZOOM_connection c, int error,
 122                             const char *addinfo, const char *addinfo2)
 123 {
 124     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 125 }
 126 #endif
 127
 128 static void set_ZOOM_error (ZOOM_connection c, int error,
 129                             const char *addinfo)
 130 {
 131     set_dset_error(c, error, "ZOOM", addinfo, 0);
 132 }
 133
 134 static void clear_error (ZOOM_connection c)
 135 {
 136
 137     switch (c->error)
 138     {
 139     case ZOOM_ERROR_CONNECT:
 140     case ZOOM_ERROR_MEMORY:
 141     case ZOOM_ERROR_DECODE:
 142     case ZOOM_ERROR_CONNECTION_LOST:
 143     case ZOOM_ERROR_INIT:
 144     case ZOOM_ERROR_INTERNAL:
 145     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 146         break;
 147     default:
 148         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 149     }
 150 }
 151
 152 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 153 {
 154     ZOOM_task *taskp = &c->tasks;
 155     while (*taskp)
 156         taskp = &(*taskp)->next;
 157     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 158     (*taskp)->running = 0;
 159     (*taskp)->which = which;
 160     (*taskp)->next = 0;
 161     clear_error (c);
 162     return *taskp;
 163 }
 164
 165 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 166 {
 167     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 168
 169     task->next = c->tasks;
 170     c->tasks = task;
 171
 172     task->running = 0;
 173     task->which = which;
 174     clear_error (c);
 175     return task;
 176 }
 177
 178 void ZOOM_connection_remove_task (ZOOM_connection c)
 179 {
 180     ZOOM_task task = c->tasks;
 181
 182     if (task)
 183     {
 184         c->tasks = task->next;
 185         switch (task->which)
 186         {
 187         case ZOOM_TASK_SEARCH:
 188             ZOOM_resultset_destroy (task->u.search.resultset);
 189             break;
 190         case ZOOM_TASK_RETRIEVE:
 191             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 192             break;
 193         case ZOOM_TASK_CONNECT:
 194             break;
 195         case ZOOM_TASK_SCAN:
 196             ZOOM_scanset_destroy (task->u.scan.scan);
 197             break;
 198         case ZOOM_TASK_PACKAGE:
 199             ZOOM_package_destroy (task->u.package);
 200             break;
 201         case ZOOM_TASK_SORT:
 202             ZOOM_resultset_destroy (task->u.sort.resultset);
 203             ZOOM_query_destroy(task->u.sort.q);
 204             break;
 205         default:
 206             assert (0);
 207         }
 208         xfree (task);
 209     }
 210 }
 211
 212 static int ZOOM_connection_exec_task (ZOOM_connection c);
 213
 214 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 215 {
 216     while (c->tasks)
 217         ZOOM_connection_remove_task(c);
 218 }
 219
 220 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 221
 222 ZOOM_API(ZOOM_connection)
 223 ZOOM_connection_create (ZOOM_options options)
 224 {
 225     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 226
 227     c->proto = PROTO_Z3950;
 228     c->cs = 0;
 229     c->mask = 0;
 230     c->reconnect_ok = 0;
 231     c->state = STATE_IDLE;
 232     c->addinfo = 0;
 233     c->diagset = 0;
 234     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 235     c->buf_in = 0;
 236     c->len_in = 0;
 237     c->buf_out = 0;
 238     c->len_out = 0;
 239     c->resultsets = 0;
 240
 241     c->options = ZOOM_options_create_with_parent(options);
 242
 243     c->host_port = 0;
 244     c->path = 0;
 245     c->proxy = 0;
 246
 247     c->charset = c->lang = 0;
 248
 249     c->cookie_out = 0;
 250     c->cookie_in = 0;
 251     c->client_IP = 0;
 252     c->tasks = 0;
 253
 254     c->odr_in = odr_createmem (ODR_DECODE);
 255     c->odr_out = odr_createmem (ODR_ENCODE);
 256
 257     c->async = 0;
 258     c->support_named_resultsets = 0;
 259     c->last_event = ZOOM_EVENT_NONE;
 260
 261     c->m_queue_front = 0;
 262     c->m_queue_back = 0;
 263     return c;
 264 }
 265
 266 /* set database names. Take local databases (if set); otherwise
 267    take databases given in ZURL (if set); otherwise use Default */
 268 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 269                                  int *num)
 270 {
 271     char **databaseNames;
 272     const char *c;
 273     int no = 2;
 274     const char *cp = ZOOM_options_get (options, "databaseName");
 275
 276     if (!cp || !*cp)
 277     {
 278         if (strncmp (con->host_port, "unix:", 5) == 0)
 279             cp = strchr (con->host_port+5, ':');
 280         else
 281             cp = strchr (con->host_port, '/');
 282         if (cp)
 283             cp++;
 284     }
 285     if (cp)
 286     {
 287         c = cp;
 288         while ((c = strchr(c, '+')))
 289         {
 290             c++;
 291             no++;
 292         }
 293     }
 294     else
 295         cp = "Default";
 296     databaseNames = (char**)
 297         odr_malloc (con->odr_out, no * sizeof(*databaseNames));
 298     no = 0;
 299     while (*cp)
 300     {
 301         c = strchr (cp, '+');
 302         if (!c)
 303             c = cp + strlen(cp);
 304         else if (c == cp)
 305         {
 306             cp++;
 307             continue;
 308         }
 309         /* cp ptr to first char of db name, c is char
 310            following db name */
 311         databaseNames[no] = (char*) odr_malloc (con->odr_out, 1+c-cp);
 312         memcpy (databaseNames[no], cp, c-cp);
 313         databaseNames[no++][c-cp] = '\0';
 314         cp = c;
 315         if (*cp)
 316             cp++;
 317     }
 318     databaseNames[no] = NULL;
 319     *num = no;
 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     if (c->cs)
 340     {
 341         yaz_log (LOG_DEBUG, "reconnect");
 342         c->reconnect_ok = 1;
 343         return;
 344     }
 345     yaz_log(LOG_DEBUG, "connect");
 346     xfree (c->proxy);
 347     val = ZOOM_options_get (c->options, "proxy");
 348     if (val && *val)
 349         c->proxy = xstrdup (val);
 350     else
 351         c->proxy = 0;
 352
 353     xfree (c->charset);
 354     val = ZOOM_options_get (c->options, "charset");
 355     if (val && *val)
 356         c->charset = xstrdup (val);
 357     else
 358         c->charset = 0;
 359
 360     xfree (c->lang);
 361     val = ZOOM_options_get (c->options, "lang");
 362     if (val && *val)
 363         c->lang = xstrdup (val);
 364     else
 365         c->lang = 0;
 366
 367     xfree (c->host_port);
 368     if (portnum)
 369     {
 370         char hostn[128];
 371         sprintf (hostn, "%.80s:%d", host, portnum);
 372         c->host_port = xstrdup(hostn);
 373     }
 374     else
 375         c->host_port = xstrdup(host);
 376
 377     ZOOM_options_set(c->options, "host", c->host_port);
 378
 379     val = ZOOM_options_get (c->options, "cookie");
 380     if (val && *val)
 381         c->cookie_out = xstrdup (val);
 382
 383     val = ZOOM_options_get (c->options, "clientIP");
 384     if (val && *val)
 385         c->client_IP = xstrdup (val);
 386
 387     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 388
 389     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 390
 391     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 392
 393     if (!c->async)
 394     {
 395         while (ZOOM_event (1, &c))
 396             ;
 397     }
 398 }
 399
 400 ZOOM_API(ZOOM_query)
 401 ZOOM_query_create(void)
 402 {
 403     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 404
 405     s->refcount = 1;
 406     s->z_query = 0;
 407     s->sort_spec = 0;
 408     s->odr = odr_createmem (ODR_ENCODE);
 409     s->query_string = 0;
 410
 411     return s;
 412 }
 413
 414 ZOOM_API(void)
 415 ZOOM_query_destroy(ZOOM_query s)
 416 {
 417     if (!s)
 418         return;
 419
 420     (s->refcount)--;
 421     yaz_log (LOG_DEBUG, "ZOOM_query_destroy count=%d", s->refcount);
 422     if (s->refcount == 0)
 423     {
 424         odr_destroy (s->odr);
 425         xfree (s);
 426     }
 427 }
 428
 429 ZOOM_API(int)
 430 ZOOM_query_prefix(ZOOM_query s, const char *str)
 431 {
 432     s->query_string = odr_strdup(s->odr, str);
 433     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 434     s->z_query->which = Z_Query_type_1;
 435     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 436     if (!s->z_query->u.type_1)
 437     {
 438         s->z_query = 0;
 439         return -1;
 440     }
 441     return 0;
 442 }
 443
 444 ZOOM_API(int)
 445 ZOOM_query_cql(ZOOM_query s, const char *str)
 446 {
 447     Z_External *ext;
 448
 449     s->query_string = odr_strdup(s->odr, str);
 450
 451     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 452     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 453     ext->indirect_reference = 0;
 454     ext->descriptor = 0;
 455     ext->which = Z_External_CQL;
 456     ext->u.cql = s->query_string;
 457
 458     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 459     s->z_query->which = Z_Query_type_104;
 460     s->z_query->u.type_104 =  ext;
 461
 462     return 0;
 463 }
 464
 465 ZOOM_API(int)
 466 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 467 {
 468     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 469     if (!s->sort_spec)
 470         return -1;
 471     return 0;
 472 }
 473
 474 static zoom_ret do_write(ZOOM_connection c);
 475
 476 ZOOM_API(void)
 477 ZOOM_connection_destroy(ZOOM_connection c)
 478 {
 479     ZOOM_resultset r;
 480     if (!c)
 481         return;
 482     if (c->cs)
 483         cs_close (c->cs);
 484     for (r = c->resultsets; r; r = r->next)
 485         r->connection = 0;
 486
 487     xfree (c->buf_in);
 488     xfree (c->addinfo);
 489     xfree (c->diagset);
 490     odr_destroy (c->odr_in);
 491     odr_destroy (c->odr_out);
 492     ZOOM_options_destroy (c->options);
 493     ZOOM_connection_remove_tasks (c);
 494     xfree (c->host_port);
 495     xfree (c->path);
 496     xfree (c->proxy);
 497     xfree (c->charset);
 498     xfree (c->lang);
 499     xfree (c->cookie_out);
 500     xfree (c->cookie_in);
 501     xfree (c->client_IP);
 502     xfree (c);
 503 }
 504
 505 void ZOOM_resultset_addref (ZOOM_resultset r)
 506 {
 507     if (r)
 508     {
 509         (r->refcount)++;
 510         yaz_log (LOG_DEBUG, "ZOOM_resultset_addref r=%p count=%d",
 511                  r, r->refcount);
 512     }
 513 }
 514
 515 ZOOM_resultset ZOOM_resultset_create ()
 516 {
 517     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 518
 519     yaz_log (LOG_DEBUG, "ZOOM_resultset_create r = %p", r);
 520     r->refcount = 1;
 521     r->size = 0;
 522     r->odr = odr_createmem (ODR_ENCODE);
 523     r->start = 0;
 524     r->piggyback = 1;
 525     r->setname = 0;
 526     r->schema = 0;
 527     r->count = 0;
 528     r->step = 0;
 529     r->record_cache = 0;
 530     r->r_sort_spec = 0;
 531     r->query = 0;
 532     r->connection = 0;
 533     r->next = 0;
 534     return r;
 535 }
 536
 537 ZOOM_API(ZOOM_resultset)
 538 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 539 {
 540     ZOOM_resultset r;
 541     ZOOM_query s = ZOOM_query_create();
 542
 543     ZOOM_query_prefix (s, q);
 544
 545     r = ZOOM_connection_search (c, s);
 546     ZOOM_query_destroy (s);
 547     return r;
 548 }
 549
 550 ZOOM_API(ZOOM_resultset)
 551 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 552 {
 553     ZOOM_resultset r = ZOOM_resultset_create ();
 554     ZOOM_task task;
 555     const char *cp;
 556
 557     r->r_sort_spec = q->sort_spec;
 558     r->query = q;
 559
 560     r->options = ZOOM_options_create_with_parent(c->options);
 561
 562     r->start = ZOOM_options_get_int(r->options, "start", 0);
 563     r->count = ZOOM_options_get_int(r->options, "count", 0);
 564     {
 565         /* If "presentChunk" is defined use that; otherwise "step" */
 566         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 567         r->step = ZOOM_options_get_int(r->options,
 568                                        (cp != 0 ? "presentChunk": "step"), 0);
 569     }
 570     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 571     cp = ZOOM_options_get (r->options, "setname");
 572     if (cp)
 573         r->setname = xstrdup(cp);
 574     cp = ZOOM_options_get (r->options, "schema");
 575     if (cp)
 576         r->schema = xstrdup(cp);
 577
 578     r->connection = c;
 579
 580     r->next = c->resultsets;
 581     c->resultsets = r;
 582
 583     if (c->host_port && c->proto == PROTO_HTTP)
 584     {
 585         if (!c->cs)
 586         {
 587             yaz_log(LOG_DEBUG, "NO COMSTACK");
 588             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 589         }
 590         else
 591         {
 592             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 593             c->reconnect_ok = 1;
 594         }
 595     }
 596
 597     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 598     task->u.search.resultset = r;
 599     ZOOM_resultset_addref (r);
 600
 601     (q->refcount)++;
 602
 603     if (!c->async)
 604     {
 605         while (ZOOM_event (1, &c))
 606             ;
 607     }
 608     return r;
 609 }
 610
 611 ZOOM_API(void)
 612     ZOOM_resultset_sort(ZOOM_resultset r,
 613                         const char *sort_type, const char *sort_spec)
 614 {
 615     ZOOM_connection c = r->connection;
 616     ZOOM_task task;
 617
 618     if (!c)
 619         return;
 620
 621     if (c->host_port && c->proto == PROTO_HTTP)
 622     {
 623         if (!c->cs)
 624         {
 625             yaz_log(LOG_DEBUG, "NO COMSTACK");
 626             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 627         }
 628         else
 629         {
 630             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 631             c->reconnect_ok = 1;
 632         }
 633     }
 634
 635     ZOOM_resultset_cache_reset(r);
 636     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 637     task->u.sort.resultset = r;
 638     task->u.sort.q = ZOOM_query_create();
 639     ZOOM_query_sortby(task->u.sort.q, sort_spec);
 640
 641     ZOOM_resultset_addref (r);
 642
 643     if (!c->async)
 644     {
 645         while (ZOOM_event (1, &c))
 646             ;
 647     }
 648 }
 649
 650 ZOOM_API(void)
 651     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 652 {
 653     ZOOM_record_cache rc;
 654
 655     for (rc = r->record_cache; rc; rc = rc->next)
 656     {
 657         if (rc->rec.wrbuf_marc)
 658             wrbuf_free (rc->rec.wrbuf_marc, 1);
 659         if (rc->rec.wrbuf_iconv)
 660             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 661         if (rc->rec.wrbuf_opac)
 662             wrbuf_free (rc->rec.wrbuf_opac, 1);
 663     }
 664     r->record_cache = 0;
 665 }
 666
 667 ZOOM_API(void)
 668 ZOOM_resultset_destroy(ZOOM_resultset r)
 669 {
 670     if (!r)
 671         return;
 672     (r->refcount)--;
 673     yaz_log (LOG_DEBUG, "ZOOM_resultset_destroy r = %p count=%d",
 674              r, r->refcount);
 675     if (r->refcount == 0)
 676     {
 677         ZOOM_resultset_cache_reset(r);
 678
 679         if (r->connection)
 680         {
 681             /* remove ourselves from the resultsets in connection */
 682             ZOOM_resultset *rp = &r->connection->resultsets;
 683             while (1)
 684             {
 685                 assert (*rp);   /* we must be in this list!! */
 686                 if (*rp == r)
 687                 {   /* OK, we're here - take us out of it */
 688                     *rp = (*rp)->next;
 689                     break;
 690                 }
 691                 rp = &(*rp)->next;
 692             }
 693         }
 694         ZOOM_query_destroy (r->query);
 695         ZOOM_options_destroy (r->options);
 696         odr_destroy (r->odr);
 697         xfree (r->setname);
 698         xfree (r->schema);
 699         xfree (r);
 700     }
 701 }
 702
 703 ZOOM_API(size_t)
 704 ZOOM_resultset_size (ZOOM_resultset r)
 705 {
 706     return r->size;
 707 }
 708
 709 static void do_close (ZOOM_connection c)
 710 {
 711     if (c->cs)
 712         cs_close(c->cs);
 713     c->cs = 0;
 714     c->mask = 0;
 715     c->state = STATE_IDLE;
 716 }
 717
 718 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 719                                      int force_sync, int start, int count)
 720 {
 721     ZOOM_task task;
 722     ZOOM_connection c;
 723     const char *cp;
 724
 725     if (!r)
 726         return;
 727     c = r->connection;
 728     if (!c)
 729         return;
 730
 731     if (c->host_port && c->proto == PROTO_HTTP)
 732     {
 733         if (!c->cs)
 734         {
 735             yaz_log(LOG_DEBUG, "NO COMSTACK");
 736             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 737         }
 738         else
 739         {
 740             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 741             c->reconnect_ok = 1;
 742         }
 743     }
 744     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 745     task->u.retrieve.resultset = r;
 746     task->u.retrieve.start = start;
 747     task->u.retrieve.count = count;
 748
 749     cp = ZOOM_options_get (r->options, "schema");
 750     if (cp)
 751     {
 752         if (!r->schema || strcmp(r->schema, cp))
 753         {
 754             xfree(r->schema);
 755             r->schema = xstrdup(cp);
 756         }
 757     }
 758
 759     ZOOM_resultset_addref (r);
 760
 761     if (!r->connection->async || force_sync)
 762         while (r->connection && ZOOM_event (1, &r->connection))
 763             ;
 764 }
 765
 766 ZOOM_API(void)
 767 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 768                         size_t start, size_t count)
 769 {
 770     int force_present = 0;
 771
 772     if (!r)
 773         return ;
 774     if (count && recs)
 775         force_present = 1;
 776     ZOOM_resultset_retrieve (r, force_present, start, count);
 777     if (force_present)
 778     {
 779         size_t i;
 780         for (i = 0; i< count; i++)
 781             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 782     }
 783 }
 784
 785 static void get_cert(ZOOM_connection c)
 786 {
 787     char *cert_buf;
 788     int cert_len;
 789
 790     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 791     {
 792         ZOOM_connection_option_setl(c, "sslPeerCert",
 793                                     cert_buf, cert_len);
 794         xfree(cert_buf);
 795     }
 796 }
 797
 798 static zoom_ret do_connect (ZOOM_connection c)
 799 {
 800     void *add;
 801     const char *effective_host;
 802
 803     if (c->proxy)
 804         effective_host = c->proxy;
 805     else
 806         effective_host = c->host_port;
 807
 808     yaz_log (LOG_DEBUG, "do_connect host=%s", effective_host);
 809
 810     if (c->cs)
 811         cs_close(c->cs);
 812     c->cs = cs_create_host (effective_host, 0, &add);
 813
 814     if (c->cs && c->cs->protocol == PROTO_HTTP)
 815     {
 816 #if HAVE_XML2
 817         const char *path = 0;
 818
 819         c->proto = PROTO_HTTP;
 820         cs_get_host_args(c->host_port, &path);
 821         xfree(c->path);
 822         c->path = (char*) xmalloc(strlen(path)+2);
 823         c->path[0] = '/';
 824         strcpy (c->path+1, path);
 825 #else
 826         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 827         do_close(c);
 828         return zoom_complete;
 829 #endif
 830     }
 831     if (c->cs)
 832     {
 833         int ret = cs_connect (c->cs, add);
 834         if (ret == 0)
 835         {
 836             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 837             ZOOM_connection_put_event(c, event);
 838             get_cert(c);
 839             if (c->proto == PROTO_Z3950)
 840                 ZOOM_connection_send_init(c);
 841             else
 842             {
 843                 /* no init request for SRW .. */
 844                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 845                 ZOOM_connection_remove_task (c);
 846                 c->mask = 0;
 847                 ZOOM_connection_exec_task (c);
 848             }
 849             c->state = STATE_ESTABLISHED;
 850             return zoom_pending;
 851         }
 852         else if (ret > 0)
 853         {
 854             c->state = STATE_CONNECTING;
 855             c->mask = ZOOM_SELECT_EXCEPT;
 856             if (c->cs->io_pending & CS_WANT_WRITE)
 857                 c->mask += ZOOM_SELECT_WRITE;
 858             if (c->cs->io_pending & CS_WANT_READ)
 859                 c->mask += ZOOM_SELECT_READ;
 860             return zoom_pending;
 861         }
 862     }
 863     c->state = STATE_IDLE;
 864     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
 865     return zoom_complete;
 866 }
 867
 868 int z3950_connection_socket(ZOOM_connection c)
 869 {
 870     if (c->cs)
 871         return cs_fileno(c->cs);
 872     return -1;
 873 }
 874
 875 int z3950_connection_mask(ZOOM_connection c)
 876 {
 877     if (c->cs)
 878         return c->mask;
 879     return 0;
 880 }
 881
 882 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 883 {
 884     int i;
 885     for (i = 0; i<200; i++)
 886     {
 887         size_t len;
 888         Z_OtherInformation **oi;
 889         char buf[80];
 890         const char *val;
 891         const char *cp;
 892         int oidval;
 893
 894         sprintf (buf, "otherInfo%d", i);
 895         val = ZOOM_options_get (c->options, buf);
 896         if (!val)
 897             break;
 898         cp = strchr (val, ':');
 899         if (!cp)
 900             continue;
 901         len = cp - val;
 902         if (len >= sizeof(buf))
 903             len = sizeof(buf)-1;
 904         memcpy (buf, val, len);
 905         buf[len] = '\0';
 906         oidval = oid_getvalbyname (buf);
 907         if (oidval == VAL_NONE)
 908             continue;
 909
 910         yaz_oi_APDU(a, &oi);
 911         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 912     }
 913 }
 914
 915 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 916 {
 917     assert (a);
 918     if (c->cookie_out)
 919     {
 920         Z_OtherInformation **oi;
 921         yaz_oi_APDU(a, &oi);
 922         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 923     }
 924     if (c->client_IP)
 925     {
 926         Z_OtherInformation **oi;
 927         yaz_oi_APDU(a, &oi);
 928         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 929     }
 930     otherInfo_attach (c, a, out);
 931     if (!z_APDU(out, &a, 0, 0))
 932     {
 933         FILE *outf = fopen("/tmp/apdu.txt", "a");
 934         if (a && outf)
 935         {
 936             ODR odr_pr = odr_createmem(ODR_PRINT);
 937             fprintf (outf, "a=%p\n", a);
 938             odr_setprint(odr_pr, outf);
 939             z_APDU(odr_pr, &a, 0, 0);
 940             odr_destroy(odr_pr);
 941         }
 942         yaz_log (LOG_DEBUG, "encoding failed");
 943         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
 944         odr_reset(out);
 945         return -1;
 946     }
 947
 948     return 0;
 949 }
 950
 951 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
 952 {
 953     ZOOM_Event event;
 954     assert (a);
 955     if (encode_APDU(c, a, c->odr_out))
 956         return zoom_complete;
 957     yaz_log(LOG_DEBUG, "send APDU type=%d", a->which);
 958     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
 959     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
 960     ZOOM_connection_put_event (c, event);
 961     odr_reset(c->odr_out);
 962     return do_write (c);
 963 }
 964
 965 /* returns 1 if PDU was sent OK (still pending )
 966            0 if PDU was not sent OK (nothing to wait for)
 967 */
 968
 969 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
 970 {
 971     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
 972     Z_InitRequest *ireq = apdu->u.initRequest;
 973     Z_IdAuthentication *auth = (Z_IdAuthentication *)
 974         odr_malloc(c->odr_out, sizeof(*auth));
 975     const char *auth_groupId = ZOOM_options_get (c->options, "group");
 976     const char *auth_userId = ZOOM_options_get (c->options, "user");
 977     const char *auth_password = ZOOM_options_get (c->options, "password");
 978     char *version;
 979
 980     /* support the pass for backwards compatibility */
 981     if (!auth_password)
 982         auth_password = ZOOM_options_get (c->options, "pass");
 983
 984     ODR_MASK_SET(ireq->options, Z_Options_search);
 985     ODR_MASK_SET(ireq->options, Z_Options_present);
 986     ODR_MASK_SET(ireq->options, Z_Options_scan);
 987     ODR_MASK_SET(ireq->options, Z_Options_sort);
 988     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
 989     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
 990
 991     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
 992     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
 993     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
 994
 995     /* Index Data's Z39.50 Implementor Id is 81 */
 996     ireq->implementationId = odr_prepend(c->odr_out,
 997         ZOOM_options_get(c->options, "implementationId"),
 998         odr_prepend(c->odr_out, "81", ireq->implementationId));
 999
1000     ireq->implementationName = odr_prepend(c->odr_out,
1001         ZOOM_options_get(c->options, "implementationName"),
1002         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1003
1004     version = odr_strdup(c->odr_out, "$Revision: 1.30 $");
1005     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1006         version[strlen(version)-2] = '\0';
1007     ireq->implementationVersion = odr_prepend(c->odr_out,
1008         ZOOM_options_get(c->options, "implementationVersion"),
1009         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1010
1011     *ireq->maximumRecordSize =
1012         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1013     *ireq->preferredMessageSize =
1014         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1015
1016     if (auth_groupId || auth_password)
1017     {
1018         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1019         int i = 0;
1020         pass->groupId = 0;
1021         if (auth_groupId && *auth_groupId)
1022         {
1023             pass->groupId = (char *)
1024                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1025             strcpy(pass->groupId, auth_groupId);
1026             i++;
1027         }
1028         pass->userId = 0;
1029         if (auth_userId && *auth_userId)
1030         {
1031             pass->userId = (char *)
1032                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1033             strcpy(pass->userId, auth_userId);
1034             i++;
1035         }
1036         pass->password = 0;
1037         if (auth_password && *auth_password)
1038         {
1039             pass->password = (char *)
1040                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1041             strcpy(pass->password, auth_password);
1042             i++;
1043         }
1044         if (i)
1045         {
1046             auth->which = Z_IdAuthentication_idPass;
1047             auth->u.idPass = pass;
1048             ireq->idAuthentication = auth;
1049         }
1050     }
1051     else if (auth_userId)
1052     {
1053         auth->which = Z_IdAuthentication_open;
1054         auth->u.open = (char *)
1055             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1056         strcpy(auth->u.open, auth_userId);
1057         ireq->idAuthentication = auth;
1058     }
1059     if (c->proxy)
1060         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1061                                  VAL_PROXY, 1, c->host_port);
1062     if (c->charset||c->lang)
1063     {
1064         Z_OtherInformation **oi;
1065         Z_OtherInformationUnit *oi_unit;
1066
1067         yaz_oi_APDU(apdu, &oi);
1068
1069         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1070         {
1071             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1072
1073             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1074             oi_unit->information.externallyDefinedInfo =
1075                 yaz_set_proposal_charneg
1076                 (c->odr_out,
1077                  (const char **)&c->charset, (c->charset) ? 1:0,
1078                  (const char **)&c->lang, (c->lang) ? 1:0, 1);
1079         }
1080     }
1081     assert (apdu);
1082     return send_APDU (c, apdu);
1083 }
1084
1085 #if HAVE_XML2
1086 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1087 {
1088     char ctype[50];
1089     Z_SOAP_Handler h[2] = {
1090         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1091         {0, 0, 0}
1092     };
1093     ODR o = odr_createmem(ODR_ENCODE);
1094     int ret;
1095     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1096     Z_GDU *gdu;
1097     ZOOM_Event event;
1098
1099     gdu = z_get_HTTP_Request(c->odr_out);
1100     gdu->u.HTTP_Request->path = c->path;
1101
1102     if (c->host_port)
1103     {
1104         const char *cp0 = strstr(c->host_port, "://");
1105         const char *cp1 = 0;
1106         if (cp0)
1107             cp0 = cp0+3;
1108         else
1109             cp0 = c->host_port;
1110
1111         cp1 = strchr(cp0, '/');
1112         if (!cp1)
1113             cp1 = cp0+strlen(cp0);
1114
1115         if (cp0 && cp1)
1116         {
1117             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1118             memcpy (h, cp0, cp1 - cp0);
1119             h[cp1-cp0] = '\0';
1120             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1121                               "Host", h);
1122         }
1123     }
1124
1125     strcpy(ctype, "text/xml");
1126     if (c->charset && strlen(c->charset) < 20)
1127     {
1128         strcat(ctype, "; charset=");
1129         strcat(ctype, c->charset);
1130     }
1131     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1132                       "Content-Type", ctype);
1133     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1134                       "SOAPAction", "\"\"");
1135     p->which = Z_SOAP_generic;
1136     p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1137     p->u.generic->no = 0;
1138     p->u.generic->ns = 0;
1139     p->u.generic->p = sr;
1140     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1141
1142     ret = z_soap_codec_enc(o, &p,
1143                            &gdu->u.HTTP_Request->content_buf,
1144                            &gdu->u.HTTP_Request->content_len, h,
1145                            c->charset);
1146
1147     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1148         return zoom_complete;
1149     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1150
1151     odr_destroy(o);
1152
1153     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1154     ZOOM_connection_put_event (c, event);
1155     odr_reset(c->odr_out);
1156     return do_write (c);
1157 }
1158 #endif
1159
1160 #if HAVE_XML2
1161 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1162 {
1163     int i;
1164     ZOOM_resultset resultset = 0;
1165     Z_SRW_PDU *sr = 0;
1166     const char *recordPacking = 0;
1167
1168     if (c->error)                  /* don't continue on error */
1169         return zoom_complete;
1170     assert (c->tasks);
1171     if (c->tasks->which == ZOOM_TASK_SEARCH)
1172     {
1173         resultset = c->tasks->u.search.resultset;
1174         resultset->setname = xstrdup ("default");
1175         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1176     }
1177     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1178     {
1179         resultset = c->tasks->u.retrieve.resultset;
1180
1181         resultset->start = c->tasks->u.retrieve.start;
1182         resultset->count = c->tasks->u.retrieve.count;
1183
1184         if (resultset->start >= resultset->size)
1185             return zoom_complete;
1186         if (resultset->start + resultset->count > resultset->size)
1187             resultset->count = resultset->size - resultset->start;
1188
1189         for (i = 0; i<resultset->count; i++)
1190         {
1191             ZOOM_record rec =
1192                 record_cache_lookup (resultset, i + resultset->start);
1193             if (!rec)
1194                 break;
1195         }
1196         if (i == resultset->count)
1197             return zoom_complete;
1198     }
1199     assert(resultset->query);
1200
1201     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1202
1203     if (resultset->query->z_query->which == Z_Query_type_104
1204         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1205     {
1206
1207         sr->u.request->query_type = Z_SRW_query_type_cql;
1208         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1209     }
1210     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1211              resultset->query->z_query->u.type_1)
1212     {
1213         sr->u.request->query_type = Z_SRW_query_type_pqf;
1214         sr->u.request->query.pqf = resultset->query->query_string;
1215     }
1216     else
1217     {
1218         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1219         return zoom_complete;
1220     }
1221     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1222     sr->u.request->maximumRecords = odr_intdup (
1223         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1224     sr->u.request->recordSchema = resultset->schema;
1225
1226     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1227
1228     if (recordPacking)
1229         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1230
1231     return send_srw(c, sr);
1232 }
1233 #else
1234 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1235 {
1236     return zoom_complete;
1237 }
1238 #endif
1239
1240 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1241 {
1242     ZOOM_resultset r;
1243     int lslb, ssub, mspn;
1244     const char *syntax;
1245     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1246     Z_SearchRequest *search_req = apdu->u.searchRequest;
1247     const char *elementSetName;
1248     const char *smallSetElementSetName;
1249     const char *mediumSetElementSetName;
1250
1251     assert (c->tasks);
1252     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1253
1254     r = c->tasks->u.search.resultset;
1255
1256     elementSetName =
1257         ZOOM_options_get (r->options, "elementSetName");
1258     smallSetElementSetName  =
1259         ZOOM_options_get (r->options, "smallSetElementSetName");
1260     mediumSetElementSetName =
1261         ZOOM_options_get (r->options, "mediumSetElementSetName");
1262
1263     if (!smallSetElementSetName)
1264         smallSetElementSetName = elementSetName;
1265
1266     if (!mediumSetElementSetName)
1267         mediumSetElementSetName = elementSetName;
1268
1269     assert (r);
1270     assert (r->query);
1271
1272     /* prepare query for the search request */
1273     search_req->query = r->query->z_query;
1274     if (!search_req->query)
1275     {
1276         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1277         return zoom_complete;
1278     }
1279
1280     search_req->databaseNames =
1281         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1282
1283     /* get syntax (no need to provide unless piggyback is in effect) */
1284     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1285
1286     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1287     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1288     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1289     if (lslb != -1 && ssub != -1 && mspn != -1)
1290     {
1291         /* So're a Z39.50 expert? Let's hope you don't do sort */
1292         *search_req->largeSetLowerBound = lslb;
1293         *search_req->smallSetUpperBound = ssub;
1294         *search_req->mediumSetPresentNumber = mspn;
1295     }
1296     else if (r->start == 0 && r->count > 0
1297              && r->piggyback && !r->r_sort_spec && !r->schema)
1298     {
1299         /* Regular piggyback - do it unless we're going to do sort */
1300         *search_req->largeSetLowerBound = 2000000000;
1301         *search_req->smallSetUpperBound = 1;
1302         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1303     }
1304     else
1305     {
1306         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1307         smallSetElementSetName = 0;
1308         mediumSetElementSetName = 0;
1309         syntax = 0;
1310     }
1311     if (smallSetElementSetName && *smallSetElementSetName)
1312     {
1313         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1314             odr_malloc (c->odr_out, sizeof(*esn));
1315
1316         esn->which = Z_ElementSetNames_generic;
1317         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1318         search_req->smallSetElementSetNames = esn;
1319     }
1320     if (mediumSetElementSetName && *mediumSetElementSetName)
1321     {
1322         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1323             odr_malloc (c->odr_out, sizeof(*esn));
1324
1325         esn->which = Z_ElementSetNames_generic;
1326         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1327         search_req->mediumSetElementSetNames = esn;
1328     }
1329     if (syntax)
1330         search_req->preferredRecordSyntax =
1331             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1332
1333     if (!r->setname)
1334     {
1335         if (c->support_named_resultsets)
1336         {
1337             char setname[14];
1338             int ord;
1339             /* find the lowest unused ordinal so that we re-use
1340                result sets on the server. */
1341             for (ord = 1; ; ord++)
1342             {
1343                 ZOOM_resultset rp;
1344                 sprintf (setname, "%d", ord);
1345                 for (rp = c->resultsets; rp; rp = rp->next)
1346                     if (rp->setname && !strcmp (rp->setname, setname))
1347                         break;
1348                 if (!rp)
1349                     break;
1350             }
1351             r->setname = xstrdup (setname);
1352             yaz_log (LOG_DEBUG, "allocating set %s", r->setname);
1353         }
1354         else
1355             r->setname = xstrdup ("default");
1356         ZOOM_options_set (r->options, "setname", r->setname);
1357     }
1358     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1359     /* send search request */
1360     return send_APDU (c, apdu);
1361 }
1362
1363 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
1364 {
1365     int oclass;
1366     Z_DefaultDiagFormat *r;
1367     char *addinfo = 0;
1368
1369     xfree (c->addinfo);
1370     c->addinfo = 0;
1371     if (p->which != Z_DiagRec_defaultFormat)
1372     {
1373         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1374         return;
1375     }
1376     r = p->u.defaultFormat;
1377     switch (r->which)
1378     {
1379     case Z_DefaultDiagFormat_v2Addinfo:
1380         addinfo = r->u.v2Addinfo;
1381         break;
1382     case Z_DefaultDiagFormat_v3Addinfo:
1383         addinfo = r->u.v3Addinfo;
1384         break;
1385     }
1386     set_dset_error(c, *r->condition,
1387                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1388                    addinfo, 0);
1389 }
1390
1391 ZOOM_API(ZOOM_record)
1392 ZOOM_record_clone (ZOOM_record srec)
1393 {
1394     char *buf;
1395     int size;
1396     ODR odr_enc;
1397     ZOOM_record nrec;
1398
1399     odr_enc = odr_createmem(ODR_ENCODE);
1400     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1401         return 0;
1402     buf = odr_getbuf (odr_enc, &size, 0);
1403
1404     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1405     nrec->odr = odr_createmem(ODR_DECODE);
1406     nrec->wrbuf_marc = 0;
1407     nrec->wrbuf_iconv = 0;
1408     nrec->wrbuf_opac = 0;
1409     odr_setbuf (nrec->odr, buf, size, 0);
1410     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1411
1412     odr_destroy (odr_enc);
1413     return nrec;
1414 }
1415
1416 ZOOM_API(ZOOM_record)
1417 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1418 {
1419     return record_cache_lookup (s, pos);
1420 }
1421
1422 ZOOM_API(ZOOM_record)
1423 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1424 {
1425     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1426
1427     if (!rec)
1428     {
1429         ZOOM_resultset_retrieve (r, 1, pos, 1);
1430         rec = ZOOM_resultset_record_immediate (r, pos);
1431     }
1432     return rec;
1433 }
1434
1435 ZOOM_API(void)
1436 ZOOM_record_destroy (ZOOM_record rec)
1437 {
1438     if (!rec)
1439         return;
1440     if (rec->wrbuf_marc)
1441         wrbuf_free (rec->wrbuf_marc, 1);
1442     if (rec->wrbuf_iconv)
1443         wrbuf_free (rec->wrbuf_iconv, 1);
1444     if (rec->wrbuf_opac)
1445         wrbuf_free (rec->wrbuf_opac, 1);
1446     odr_destroy (rec->odr);
1447     xfree (rec);
1448 }
1449
1450 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1451                                      int *len,
1452                                      const char *buf, int sz,
1453                                      const char *record_charset)
1454 {
1455     char to[40];
1456     char from[40];
1457     yaz_iconv_t cd = 0;
1458     yaz_marc_t mt = yaz_marc_create();
1459
1460     *from = '\0';
1461     strcpy(to, "UTF-8");
1462     if (record_charset && *record_charset)
1463     {
1464         /* Use "from,to" or just "from" */
1465         const char *cp =strchr(record_charset, ',');
1466         int clen = strlen(record_charset);
1467         if (cp && cp[1])
1468         {
1469             strncpy( to, cp+1, sizeof(to)-1);
1470             to[sizeof(to)-1] = '\0';
1471             clen = cp - record_charset;
1472         }
1473         if (clen > sizeof(from)-1)
1474             clen = sizeof(from)-1;
1475
1476         if (clen)
1477             strncpy(from, record_charset, clen);
1478         from[clen] = '\0';
1479     }
1480
1481     if (*from && *to)
1482     {
1483         cd = yaz_iconv_open(to, from);
1484         yaz_marc_iconv(mt, cd);
1485     }
1486
1487     yaz_marc_xml(mt, marc_type);
1488     if (!rec->wrbuf_marc)
1489         rec->wrbuf_marc = wrbuf_alloc();
1490     wrbuf_rewind (rec->wrbuf_marc);
1491     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1492     {
1493         yaz_marc_destroy(mt);
1494         if (cd)
1495             yaz_iconv_close(cd);
1496         if (len)
1497             *len = wrbuf_len(rec->wrbuf_marc);
1498         return wrbuf_buf(rec->wrbuf_marc);
1499     }
1500     yaz_marc_destroy(mt);
1501     if (cd)
1502         yaz_iconv_close(cd);
1503     return 0;
1504 }
1505
1506 static const char *record_iconv_return(ZOOM_record rec, int *len,
1507                                        const char *buf, int sz,
1508                                        const char *record_charset)
1509 {
1510     char to[40];
1511     char from[40];
1512     yaz_iconv_t cd = 0;
1513
1514     *from = '\0';
1515     strcpy(to, "UTF-8");
1516     if (record_charset && *record_charset)
1517     {
1518         /* Use "from,to" or just "from" */
1519         const char *cp =strchr(record_charset, ',');
1520         int clen = strlen(record_charset);
1521         if (cp && cp[1])
1522         {
1523             strncpy( to, cp+1, sizeof(to)-1);
1524             to[sizeof(to)-1] = '\0';
1525             clen = cp - record_charset;
1526         }
1527         if (clen > sizeof(from)-1)
1528             clen = sizeof(from)-1;
1529
1530         if (clen)
1531             strncpy(from, record_charset, clen);
1532         from[clen] = '\0';
1533     }
1534
1535     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1536     {
1537         char outbuf[12];
1538         size_t inbytesleft = sz;
1539         const char *inp = buf;
1540
1541         if (!rec->wrbuf_iconv)
1542             rec->wrbuf_iconv = wrbuf_alloc();
1543
1544         wrbuf_rewind(rec->wrbuf_iconv);
1545
1546         while (inbytesleft)
1547         {
1548             size_t outbytesleft = sizeof(outbuf);
1549             char *outp = outbuf;
1550             size_t r = yaz_iconv (cd, (char**) &inp,
1551                                   &inbytesleft,
1552                                   &outp, &outbytesleft);
1553             if (r == (size_t) (-1))
1554             {
1555                 int e = yaz_iconv_error(cd);
1556                 if (e != YAZ_ICONV_E2BIG)
1557                     break;
1558             }
1559             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1560         }
1561         wrbuf_puts(rec->wrbuf_iconv, "");
1562         buf = wrbuf_buf(rec->wrbuf_iconv);
1563         sz = wrbuf_len(rec->wrbuf_iconv);
1564         yaz_iconv_close(cd);
1565     }
1566     if (len)
1567         *len = sz;
1568     return buf;
1569 }
1570
1571 ZOOM_API(const char *)
1572 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1573 {
1574     char type[40];
1575     char charset[40];
1576     char xpath[512];
1577     const char *cp;
1578     int i;
1579     Z_NamePlusRecord *npr;
1580
1581     if (len)
1582         *len = 0; /* default return */
1583
1584     if (!rec)
1585         return 0;
1586     npr = rec->npr;
1587     if (!npr)
1588         return 0;
1589
1590     cp = type_spec;
1591     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1592     {
1593         if (cp[i] == ';' || cp[i] == ' ')
1594             break;
1595         type[i] = cp[i];
1596     }
1597     type[i] = '\0';
1598     charset[0] = '\0';
1599     while (type_spec[i] == ';')
1600     {
1601         i++;
1602         while (type_spec[i] == ' ')
1603             i++;
1604         if (!strncmp(type_spec+i, "charset=", 8))
1605         {
1606             int j = 0;
1607             i = i + 8; /* skip charset= */
1608             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1609             {
1610                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1611                     break;
1612                 charset[j] = cp[i];
1613             }
1614             charset[j] = '\0';
1615         }
1616         else if (!strncmp(type_spec+i, "xpath=", 6))
1617         {
1618             int j = 0;
1619             i = i + 6;
1620             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1621                 xpath[j] = cp[i];
1622             xpath[j] = '\0';
1623         }
1624         while (type_spec[i] == ' ')
1625             i++;
1626     }
1627     if (!strcmp (type, "database"))
1628     {
1629         if (len)
1630             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1631         return npr->databaseName;
1632     }
1633     else if (!strcmp (type, "syntax"))
1634     {
1635         const char *desc = 0;
1636         if (npr->which == Z_NamePlusRecord_databaseRecord)
1637         {
1638             Z_External *r = (Z_External *) npr->u.databaseRecord;
1639             oident *ent = oid_getentbyoid(r->direct_reference);
1640             if (ent)
1641                 desc = ent->desc;
1642         }
1643         if (!desc)
1644             desc = "none";
1645         if (len)
1646             *len = strlen(desc);
1647         return desc;
1648     }
1649     if (npr->which != Z_NamePlusRecord_databaseRecord)
1650         return 0;
1651
1652     /* from now on - we have a database record .. */
1653     if (!strcmp (type, "render"))
1654     {
1655         Z_External *r = (Z_External *) npr->u.databaseRecord;
1656         oident *ent = oid_getentbyoid(r->direct_reference);
1657
1658         /* render bibliographic record .. */
1659         if (r->which == Z_External_OPAC)
1660         {
1661             r = r->u.opac->bibliographicRecord;
1662             if (!r)
1663                 return 0;
1664             ent = oid_getentbyoid(r->direct_reference);
1665         }
1666         if (r->which == Z_External_sutrs)
1667             return record_iconv_return(rec, len,
1668                                        (char*) r->u.sutrs->buf,
1669                                        r->u.sutrs->len,
1670                                        charset);
1671         else if (r->which == Z_External_octet)
1672         {
1673             const char *ret_buf;
1674             switch (ent->value)
1675             {
1676             case VAL_SOIF:
1677             case VAL_HTML:
1678             case VAL_SUTRS:
1679                 break;
1680             case VAL_TEXT_XML:
1681             case VAL_APPLICATION_XML:
1682                 break;
1683             default:
1684                 ret_buf = marc_iconv_return(
1685                     rec, YAZ_MARC_LINE, len,
1686                     (const char *) r->u.octet_aligned->buf,
1687                     r->u.octet_aligned->len,
1688                     charset);
1689                 if (ret_buf)
1690                     return ret_buf;
1691             }
1692             return record_iconv_return(rec, len,
1693                                        (const char *) r->u.octet_aligned->buf,
1694                                        r->u.octet_aligned->len,
1695                                        charset);
1696         }
1697         else if (r->which == Z_External_grs1)
1698         {
1699             if (!rec->wrbuf_marc)
1700                 rec->wrbuf_marc = wrbuf_alloc();
1701             wrbuf_rewind (rec->wrbuf_marc);
1702             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1703             return record_iconv_return(rec, len,
1704                                        wrbuf_buf(rec->wrbuf_marc),
1705                                        wrbuf_len(rec->wrbuf_marc),
1706                                        charset);
1707         }
1708         return 0;
1709     }
1710     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1711     {
1712         Z_External *r = (Z_External *) npr->u.databaseRecord;
1713         oident *ent = oid_getentbyoid(r->direct_reference);
1714
1715         /* render bibliographic record .. */
1716         if (r->which == Z_External_OPAC)
1717         {
1718             r = r->u.opac->bibliographicRecord;
1719             if (!r)
1720                 return 0;
1721             ent = oid_getentbyoid(r->direct_reference);
1722         }
1723
1724         if (r->which == Z_External_sutrs)
1725             return record_iconv_return(rec, len,
1726                                        (const char *) r->u.sutrs->buf,
1727                                        r->u.sutrs->len,
1728                                        charset);
1729         else if (r->which == Z_External_octet)
1730         {
1731             const char *ret_buf;
1732             int marc_decode_type = YAZ_MARC_MARCXML;
1733
1734             if (!strcmp(type, "oai"))
1735                 marc_decode_type = YAZ_MARC_OAIMARC;
1736             switch (ent->value)
1737             {
1738             case VAL_SOIF:
1739             case VAL_HTML:
1740             case VAL_SUTRS:
1741                 break;
1742             case VAL_TEXT_XML:
1743             case VAL_APPLICATION_XML:
1744                 break;
1745             default:
1746                 ret_buf = marc_iconv_return(
1747                     rec, marc_decode_type, len,
1748                     (const char *) r->u.octet_aligned->buf,
1749                     r->u.octet_aligned->len,
1750                     charset);
1751                 if (ret_buf)
1752                     return ret_buf;
1753             }
1754             return record_iconv_return(rec, len,
1755                                        (const char *) r->u.octet_aligned->buf,
1756                                        r->u.octet_aligned->len,
1757                                        charset);
1758         }
1759         else if (r->which == Z_External_grs1)
1760         {
1761             if (len) *len = 5;
1762             return "GRS-1";
1763         }
1764         return 0;
1765     }
1766     else if (!strcmp (type, "raw"))
1767     {
1768         Z_External *r = (Z_External *) npr->u.databaseRecord;
1769
1770         if (r->which == Z_External_sutrs)
1771         {
1772             if (len) *len = r->u.sutrs->len;
1773             return (const char *) r->u.sutrs->buf;
1774         }
1775         else if (r->which == Z_External_octet)
1776         {
1777             if (len) *len = r->u.octet_aligned->len;
1778             return (const char *) r->u.octet_aligned->buf;
1779         }
1780         else /* grs-1, explain, OPAC, ... */
1781         {
1782             if (len) *len = -1;
1783             return (const char *) npr->u.databaseRecord;
1784         }
1785         return 0;
1786     }
1787     else if (!strcmp (type, "ext"))
1788     {
1789         if (len) *len = -1;
1790         return (const char *) npr->u.databaseRecord;
1791     }
1792     else if (!strcmp (type, "opac"))
1793
1794     {
1795         Z_External *r = (Z_External *) npr->u.databaseRecord;
1796         if (r->which == Z_External_OPAC)
1797         {
1798             if (!rec->wrbuf_opac)
1799                 rec->wrbuf_opac = wrbuf_alloc();
1800             wrbuf_rewind (rec->wrbuf_opac);
1801             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1802             return record_iconv_return(rec, len,
1803                                        wrbuf_buf(rec->wrbuf_opac),
1804                                        wrbuf_len(rec->wrbuf_opac),
1805                                        charset);
1806         }
1807     }
1808     return 0;
1809 }
1810
1811 static int strcmp_null(const char *v1, const char *v2)
1812 {
1813     if (!v1 && !v2)
1814         return 0;
1815     if (!v1 || !v2)
1816         return -1;
1817     return strcmp(v1, v2);
1818 }
1819
1820 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1821                               int pos)
1822 {
1823     ZOOM_record_cache rc;
1824     const char *elementSetName =
1825         ZOOM_resultset_option_get (r, "elementSetName");
1826     const char *syntax =
1827         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1828
1829     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1830     ZOOM_connection_put_event(r->connection, event);
1831
1832     for (rc = r->record_cache; rc; rc = rc->next)
1833     {
1834         if (pos == rc->pos)
1835         {
1836             if (strcmp_null(r->schema, rc->schema))
1837                 continue;
1838             if (strcmp_null(elementSetName,rc->elementSetName))
1839                 continue;
1840             if (strcmp_null(syntax, rc->syntax))
1841                 continue;
1842             /* not destroying rc->npr (it's handled by nmem )*/
1843             rc->rec.npr = npr;
1844             /* keeping wrbuf_marc too */
1845             return;
1846         }
1847     }
1848     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1849     rc->rec.npr = npr;
1850     rc->rec.odr = 0;
1851     rc->rec.wrbuf_marc = 0;
1852     rc->rec.wrbuf_iconv = 0;
1853     rc->rec.wrbuf_opac = 0;
1854     if (elementSetName)
1855         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1856     else
1857         rc->elementSetName = 0;
1858
1859     if (syntax)
1860         rc->syntax = odr_strdup (r->odr, syntax);
1861     else
1862         rc->syntax = 0;
1863
1864     if (r->schema)
1865         rc->schema = odr_strdup (r->odr, r->schema);
1866     else
1867         rc->schema = 0;
1868
1869     rc->pos = pos;
1870     rc->next = r->record_cache;
1871     r->record_cache = rc;
1872 }
1873
1874 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1875 {
1876     ZOOM_record_cache rc;
1877     const char *elementSetName =
1878         ZOOM_resultset_option_get (r, "elementSetName");
1879     const char *syntax =
1880         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1881
1882     for (rc = r->record_cache; rc; rc = rc->next)
1883     {
1884         if (pos == rc->pos)
1885         {
1886             if (strcmp_null(r->schema, rc->schema))
1887                 continue;
1888             if (strcmp_null(elementSetName,rc->elementSetName))
1889                 continue;
1890             if (strcmp_null(syntax, rc->syntax))
1891                 continue;
1892             return &rc->rec;
1893         }
1894     }
1895     return 0;
1896 }
1897
1898 static void handle_records (ZOOM_connection c, Z_Records *sr,
1899                             int present_phase)
1900 {
1901     ZOOM_resultset resultset;
1902
1903     if (!c->tasks)
1904         return ;
1905     switch (c->tasks->which)
1906     {
1907     case ZOOM_TASK_SEARCH:
1908         resultset = c->tasks->u.search.resultset;
1909         break;
1910     case ZOOM_TASK_RETRIEVE:
1911         resultset = c->tasks->u.retrieve.resultset;
1912         break;
1913     default:
1914         return;
1915     }
1916     if (sr && sr->which == Z_Records_NSD)
1917     {
1918         Z_DiagRec dr, *dr_p = &dr;
1919         dr.which = Z_DiagRec_defaultFormat;
1920         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1921
1922         response_diag (c, dr_p);
1923     }
1924     else if (sr && sr->which == Z_Records_multipleNSD)
1925     {
1926         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1927             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1928         else
1929             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1930     }
1931     else
1932     {
1933         if (resultset->count + resultset->start > resultset->size)
1934             resultset->count = resultset->size - resultset->start;
1935         if (resultset->count < 0)
1936             resultset->count = 0;
1937         if (sr && sr->which == Z_Records_DBOSD)
1938         {
1939             int i;
1940             NMEM nmem = odr_extract_mem (c->odr_in);
1941             Z_NamePlusRecordList *p =
1942                 sr->u.databaseOrSurDiagnostics;
1943             for (i = 0; i<p->num_records; i++)
1944             {
1945                 record_cache_add (resultset, p->records[i],
1946                                   i+ resultset->start);
1947             }
1948             /* transfer our response to search_nmem .. we need it later */
1949             nmem_transfer (resultset->odr->mem, nmem);
1950             nmem_destroy (nmem);
1951             if (present_phase && p->num_records == 0)
1952             {
1953                 /* present response and we didn't get any records! */
1954                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1955             }
1956         }
1957         else if (present_phase)
1958         {
1959             /* present response and we didn't get any records! */
1960             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1961         }
1962     }
1963 }
1964
1965 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1966 {
1967     handle_records (c, pr->records, 1);
1968 }
1969
1970 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1971 {
1972     ZOOM_resultset resultset;
1973     ZOOM_Event event;
1974
1975     yaz_log (LOG_DEBUG, "got search response");
1976
1977     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1978         return ;
1979
1980     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
1981     ZOOM_connection_put_event(c, event);
1982
1983     resultset = c->tasks->u.search.resultset;
1984
1985     resultset->size = *sr->resultCount;
1986     handle_records (c, sr->records, 0);
1987 }
1988
1989 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
1990 {
1991     if (res->diagnostics && res->num_diagnostics > 0)
1992         response_diag (c, res->diagnostics[0]);
1993 }
1994
1995 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
1996 {
1997     NMEM nmem = odr_extract_mem (c->odr_in);
1998     ZOOM_scanset scan;
1999
2000     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2001         return 0;
2002     scan = c->tasks->u.scan.scan;
2003
2004     if (res->entries && res->entries->nonsurrogateDiagnostics)
2005         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2006     scan->scan_response = res;
2007     nmem_transfer (scan->odr->mem, nmem);
2008     if (res->stepSize)
2009         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2010     if (res->positionOfTerm)
2011         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2012     if (res->scanStatus)
2013         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2014     if (res->numberOfEntriesReturned)
2015         ZOOM_options_set_int (scan->options, "number",
2016                               *res->numberOfEntriesReturned);
2017     nmem_destroy (nmem);
2018     return 1;
2019 }
2020
2021 static zoom_ret send_sort (ZOOM_connection c,
2022                            ZOOM_resultset resultset)
2023 {
2024     if (c->error)
2025         resultset->r_sort_spec = 0;
2026     if (resultset->r_sort_spec)
2027     {
2028         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2029         Z_SortRequest *req = apdu->u.sortRequest;
2030
2031         req->num_inputResultSetNames = 1;
2032         req->inputResultSetNames = (Z_InternationalString **)
2033             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2034         req->inputResultSetNames[0] =
2035             odr_strdup (c->odr_out, resultset->setname);
2036         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2037         req->sortSequence = resultset->r_sort_spec;
2038         resultset->r_sort_spec = 0;
2039         return send_APDU (c, apdu);
2040     }
2041     return zoom_complete;
2042 }
2043
2044 static zoom_ret send_present (ZOOM_connection c)
2045 {
2046     Z_APDU *apdu = 0;
2047     Z_PresentRequest *req = 0;
2048     int i = 0;
2049     const char *syntax = 0;
2050     const char *elementSetName = 0;
2051     ZOOM_resultset  resultset;
2052
2053     if (!c->tasks)
2054         return zoom_complete;
2055
2056     switch (c->tasks->which)
2057     {
2058     case ZOOM_TASK_SEARCH:
2059         resultset = c->tasks->u.search.resultset;
2060         break;
2061     case ZOOM_TASK_RETRIEVE:
2062         resultset = c->tasks->u.retrieve.resultset;
2063         resultset->start = c->tasks->u.retrieve.start;
2064         resultset->count = c->tasks->u.retrieve.count;
2065
2066         if (resultset->start >= resultset->size)
2067             return zoom_complete;
2068         if (resultset->start + resultset->count > resultset->size)
2069             resultset->count = resultset->size - resultset->start;
2070         break;
2071     default:
2072         return zoom_complete;
2073     }
2074
2075     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2076     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2077
2078     if (c->error)                  /* don't continue on error */
2079         return zoom_complete;
2080     if (resultset->start < 0)
2081         return zoom_complete;
2082     for (i = 0; i<resultset->count; i++)
2083     {
2084         ZOOM_record rec =
2085             record_cache_lookup (resultset, i + resultset->start);
2086         if (!rec)
2087             break;
2088     }
2089     if (i == resultset->count)
2090         return zoom_complete;
2091
2092     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2093     req = apdu->u.presentRequest;
2094
2095     resultset->start += i;
2096     resultset->count -= i;
2097     *req->resultSetStartPoint = resultset->start + 1;
2098     *req->numberOfRecordsRequested = resultset->step>0 ?
2099         resultset->step : resultset->count;
2100     assert (*req->numberOfRecordsRequested > 0);
2101
2102     if (syntax && *syntax)
2103         req->preferredRecordSyntax =
2104             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2105
2106     if (resultset->schema && *resultset->schema)
2107     {
2108         Z_RecordComposition *compo = (Z_RecordComposition *)
2109             odr_malloc (c->odr_out, sizeof(*compo));
2110
2111         req->recordComposition = compo;
2112         compo->which = Z_RecordComp_complex;
2113         compo->u.complex = (Z_CompSpec *)
2114             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2115         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2116             odr_malloc(c->odr_out, sizeof(bool_t));
2117         *compo->u.complex->selectAlternativeSyntax = 0;
2118
2119         compo->u.complex->generic = (Z_Specification *)
2120             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2121
2122         compo->u.complex->generic->which = Z_Schema_oid;
2123         compo->u.complex->generic->schema.oid = (Odr_oid *)
2124             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2125
2126         if (!compo->u.complex->generic->schema.oid)
2127         {
2128             /* OID wasn't a schema! Try record syntax instead. */
2129
2130             compo->u.complex->generic->schema.oid = (Odr_oid *)
2131                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2132         }
2133         if (elementSetName && *elementSetName)
2134         {
2135             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2136                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2137             compo->u.complex->generic->elementSpec->which =
2138                 Z_ElementSpec_elementSetName;
2139             compo->u.complex->generic->elementSpec->u.elementSetName =
2140                 odr_strdup (c->odr_out, elementSetName);
2141         }
2142         else
2143             compo->u.complex->generic->elementSpec = 0;
2144         compo->u.complex->num_dbSpecific = 0;
2145         compo->u.complex->dbSpecific = 0;
2146         compo->u.complex->num_recordSyntax = 0;
2147         compo->u.complex->recordSyntax = 0;
2148     }
2149     else if (elementSetName && *elementSetName)
2150     {
2151         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2152             odr_malloc (c->odr_out, sizeof(*esn));
2153         Z_RecordComposition *compo = (Z_RecordComposition *)
2154             odr_malloc (c->odr_out, sizeof(*compo));
2155
2156         esn->which = Z_ElementSetNames_generic;
2157         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2158         compo->which = Z_RecordComp_simple;
2159         compo->u.simple = esn;
2160         req->recordComposition = compo;
2161     }
2162     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2163     return send_APDU (c, apdu);
2164 }
2165
2166 ZOOM_API(ZOOM_scanset)
2167 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2168 {
2169     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2170
2171     scan->connection = c;
2172     scan->odr = odr_createmem (ODR_DECODE);
2173     scan->options = ZOOM_options_create_with_parent (c->options);
2174     scan->refcount = 1;
2175     scan->scan_response = 0;
2176
2177     if ((scan->termListAndStartPoint =
2178          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2179                       start)))
2180     {
2181         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2182         task->u.scan.scan = scan;
2183
2184         (scan->refcount)++;
2185         if (!c->async)
2186         {
2187             while (ZOOM_event (1, &c))
2188                 ;
2189         }
2190     }
2191     return scan;
2192 }
2193
2194 ZOOM_API(void)
2195 ZOOM_scanset_destroy (ZOOM_scanset scan)
2196 {
2197     if (!scan)
2198         return;
2199     (scan->refcount)--;
2200     if (scan->refcount == 0)
2201     {
2202         odr_destroy (scan->odr);
2203
2204         ZOOM_options_destroy (scan->options);
2205         xfree (scan);
2206     }
2207 }
2208
2209 static zoom_ret send_package (ZOOM_connection c)
2210 {
2211     ZOOM_Event event;
2212     if (!c->tasks)
2213         return zoom_complete;
2214     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2215
2216     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2217     ZOOM_connection_put_event (c, event);
2218
2219     return do_write_ex (c, c->tasks->u.package->buf_out,
2220                         c->tasks->u.package->len_out);
2221 }
2222
2223 static zoom_ret send_scan (ZOOM_connection c)
2224 {
2225     ZOOM_scanset scan;
2226     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2227     Z_ScanRequest *req = apdu->u.scanRequest;
2228     if (!c->tasks)
2229         return zoom_complete;
2230     assert (c->tasks->which == ZOOM_TASK_SCAN);
2231     scan = c->tasks->u.scan.scan;
2232
2233     req->termListAndStartPoint = scan->termListAndStartPoint;
2234     req->attributeSet = scan->attributeSet;
2235
2236     *req->numberOfTermsRequested =
2237         ZOOM_options_get_int(scan->options, "number", 10);
2238
2239     req->preferredPositionInResponse =
2240         odr_intdup (c->odr_out,
2241                     ZOOM_options_get_int(scan->options, "position", 1));
2242
2243     req->stepSize =
2244         odr_intdup (c->odr_out,
2245                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2246
2247     req->databaseNames = set_DatabaseNames (c, scan->options,
2248                                             &req->num_databaseNames);
2249
2250     return send_APDU (c, apdu);
2251 }
2252
2253 ZOOM_API(size_t)
2254 ZOOM_scanset_size (ZOOM_scanset scan)
2255 {
2256     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2257         return 0;
2258     return scan->scan_response->entries->num_entries;
2259 }
2260
2261 ZOOM_API(const char *)
2262 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2263                    int *occ, int *len)
2264 {
2265     const char *term = 0;
2266     size_t noent = ZOOM_scanset_size (scan);
2267     Z_ScanResponse *res = scan->scan_response;
2268
2269     *len = 0;
2270     *occ = 0;
2271     if (pos >= noent)
2272         return 0;
2273     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2274     {
2275         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2276
2277         if (t->term->which == Z_Term_general)
2278         {
2279             term = (const char *) t->term->u.general->buf;
2280             *len = t->term->u.general->len;
2281         }
2282         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2283     }
2284     return term;
2285 }
2286
2287 ZOOM_API(const char *)
2288 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2289                            int *occ, int *len)
2290 {
2291     const char *term = 0;
2292     size_t noent = ZOOM_scanset_size (scan);
2293     Z_ScanResponse *res = scan->scan_response;
2294
2295     *len = 0;
2296     *occ = 0;
2297     if (pos >= noent)
2298         return 0;
2299     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2300     {
2301         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2302
2303         if (t->displayTerm)
2304         {
2305             term = t->displayTerm;
2306             *len = strlen(term);
2307         }
2308         else if (t->term->which == Z_Term_general)
2309         {
2310             term = (const char *) t->term->u.general->buf;
2311             *len = t->term->u.general->len;
2312         }
2313         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2314     }
2315     return term;
2316 }
2317
2318 ZOOM_API(const char *)
2319 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2320 {
2321     return ZOOM_options_get (scan->options, key);
2322 }
2323
2324 ZOOM_API(void)
2325 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2326                               const char *val)
2327 {
2328     ZOOM_options_set (scan->options, key, val);
2329 }
2330
2331 static Z_APDU *create_es_package (ZOOM_package p, int type)
2332 {
2333     const char *str;
2334     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2335     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2336
2337     *req->function = Z_ExtendedServicesRequest_create;
2338
2339     str = ZOOM_options_get(p->options, "package-name");
2340     if (str && *str)
2341         req->packageName = nmem_strdup (p->odr_out->mem, str);
2342
2343     str = ZOOM_options_get(p->options, "user-id");
2344     if (str)
2345         req->userId = nmem_strdup (p->odr_out->mem, str);
2346
2347     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2348                                               type);
2349
2350     str = ZOOM_options_get(p->options, "function");
2351     if (str)
2352     {
2353         if (!strcmp (str, "create"))
2354             *req->function = 1;
2355         if (!strcmp (str, "delete"))
2356             *req->function = 2;
2357         if (!strcmp (str, "modify"))
2358             *req->function = 3;
2359     }
2360     return apdu;
2361 }
2362
2363 static const char *ill_array_lookup (void *clientData, const char *idx)
2364 {
2365     ZOOM_package p = (ZOOM_package) clientData;
2366     return ZOOM_options_get (p->options, idx+4);
2367 }
2368
2369 static Z_External *encode_ill_request (ZOOM_package p)
2370 {
2371     ODR out = p->odr_out;
2372     ILL_Request *req;
2373     Z_External *r = 0;
2374     struct ill_get_ctl ctl;
2375
2376     ctl.odr = p->odr_out;
2377     ctl.clientData = p;
2378     ctl.f = ill_array_lookup;
2379
2380     req = ill_get_ILLRequest(&ctl, "ill", 0);
2381
2382     if (!ill_Request (out, &req, 0, 0))
2383     {
2384         int ill_request_size;
2385         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2386         if (ill_request_buf)
2387             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2388         return 0;
2389     }
2390     else
2391     {
2392         oident oid;
2393         int illRequest_size = 0;
2394         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2395
2396         oid.proto = PROTO_GENERAL;
2397         oid.oclass = CLASS_GENERAL;
2398         oid.value = VAL_ISO_ILL_1;
2399
2400         r = (Z_External *) odr_malloc (out, sizeof(*r));
2401         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2402         r->indirect_reference = 0;
2403         r->descriptor = 0;
2404         r->which = Z_External_single;
2405
2406         r->u.single_ASN1_type = (Odr_oct *)
2407             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2408         r->u.single_ASN1_type->buf = (unsigned char*)
2409             odr_malloc (out, illRequest_size);
2410         r->u.single_ASN1_type->len = illRequest_size;
2411         r->u.single_ASN1_type->size = illRequest_size;
2412         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2413     }
2414     return r;
2415 }
2416
2417 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2418 {
2419     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2420     const char *str;
2421
2422     req->which=Z_IOItemOrder_esRequest;
2423     req->u.esRequest = (Z_IORequest *)
2424         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2425
2426     /* to keep part ... */
2427     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2428         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2429     req->u.esRequest->toKeep->supplDescription = 0;
2430     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2431         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2432
2433     str = ZOOM_options_get(p->options, "contact-name");
2434     req->u.esRequest->toKeep->contact->name = str ?
2435         nmem_strdup (p->odr_out->mem, str) : 0;
2436
2437     str = ZOOM_options_get(p->options, "contact-phone");
2438     req->u.esRequest->toKeep->contact->phone = str ?
2439         nmem_strdup (p->odr_out->mem, str) : 0;
2440
2441     str = ZOOM_options_get(p->options, "contact-email");
2442     req->u.esRequest->toKeep->contact->email = str ?
2443         nmem_strdup (p->odr_out->mem, str) : 0;
2444
2445     req->u.esRequest->toKeep->addlBilling = 0;
2446
2447     /* not to keep part ... */
2448     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2449         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2450
2451     str = ZOOM_options_get(p->options, "itemorder-setname");
2452     if (!str)
2453         str = "default";
2454
2455     if (!*str)
2456         req->u.esRequest->notToKeep->resultSetItem = 0;
2457     else
2458     {
2459         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2460            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2461
2462         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2463            nmem_strdup (p->odr_out->mem, str);
2464         req->u.esRequest->notToKeep->resultSetItem->item =
2465             (int *) odr_malloc(p->odr_out, sizeof(int));
2466
2467         str = ZOOM_options_get(p->options, "itemorder-item");
2468         *req->u.esRequest->notToKeep->resultSetItem->item =
2469             (str ? atoi(str) : 1);
2470     }
2471     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2472
2473     return req;
2474 }
2475
2476 Z_APDU *create_admin_package(ZOOM_package p, int type,
2477                              Z_ESAdminOriginPartToKeep **toKeepP,
2478                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2479 {
2480     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2481     if (apdu)
2482     {
2483         Z_ESAdminOriginPartToKeep  *toKeep;
2484         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2485         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2486         const char *first_db = "Default";
2487         int num_db;
2488         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2489         if (num_db > 0)
2490             first_db = db[0];
2491
2492         r->direct_reference =
2493             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2494                                    VAL_ADMINSERVICE);
2495         r->descriptor = 0;
2496         r->indirect_reference = 0;
2497         r->which = Z_External_ESAdmin;
2498
2499         r->u.adminService = (Z_Admin *)
2500             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2501         r->u.adminService->which = Z_Admin_esRequest;
2502         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2503             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2504
2505         toKeep = r->u.adminService->u.esRequest->toKeep =
2506             (Z_ESAdminOriginPartToKeep *)
2507             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2508         toKeep->which=type;
2509         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2510         toKeep->u.create=odr_nullval();
2511         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2512
2513         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2514             (Z_ESAdminOriginPartNotToKeep *)
2515             odr_malloc(p->odr_out,
2516                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2517         notToKeep->which=Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2518         notToKeep->u.recordsWillFollow=odr_nullval();
2519         if (toKeepP)
2520             *toKeepP = toKeep;
2521         if (notToKeepP)
2522             *notToKeepP = notToKeep;
2523     }
2524     return apdu;
2525 }
2526
2527 static Z_APDU *create_update_package(ZOOM_package p)
2528 {
2529     Z_APDU *apdu = 0;
2530     const char *first_db = "Default";
2531     int num_db;
2532     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2533     const char *action = ZOOM_options_get(p->options, "action");
2534     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2535     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2536     const char *record_buf = ZOOM_options_get(p->options, "record");
2537     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2538     int syntax_oid = VAL_NONE;
2539     int action_no = -1;
2540
2541     if (syntax_str)
2542         syntax_oid = oid_getvalbyname(syntax_str);
2543     if (!record_buf)
2544     {
2545         record_buf = "void";
2546         syntax_oid = VAL_SUTRS;
2547     }
2548     if (syntax_oid != VAL_NONE)
2549         syntax_oid = VAL_TEXT_XML;
2550
2551     if (num_db > 0)
2552         first_db = db[0];
2553
2554     if (!action)
2555         action = "specialUpdate";
2556
2557     if (!strcmp(action, "recordInsert"))
2558         action_no = Z_IUOriginPartToKeep_recordInsert;
2559     else if (!strcmp(action, "recordReplace"))
2560         action_no = Z_IUOriginPartToKeep_recordReplace;
2561     else if (!strcmp(action, "recordDelete"))
2562         action_no = Z_IUOriginPartToKeep_recordDelete;
2563     else if (!strcmp(action, "elementUpdate"))
2564         action_no = Z_IUOriginPartToKeep_elementUpdate;
2565     else if (!strcmp(action, "specialUpdate"))
2566         action_no = Z_IUOriginPartToKeep_specialUpdate;
2567     else
2568         return 0;
2569
2570     apdu = create_es_package (p, VAL_DBUPDATE);
2571     if (apdu)
2572     {
2573         Z_IUOriginPartToKeep *toKeep;
2574         Z_IUSuppliedRecords *notToKeep;
2575         Z_External *r = (Z_External *)
2576             odr_malloc (p->odr_out, sizeof(*r));
2577
2578         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2579
2580         r->direct_reference =
2581             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2582                                    VAL_DBUPDATE);
2583         r->descriptor = 0;
2584         r->which = Z_External_update;
2585         r->indirect_reference = 0;
2586         r->u.update = (Z_IUUpdate *)
2587             odr_malloc(p->odr_out, sizeof(*r->u.update));
2588
2589         r->u.update->which = Z_IUUpdate_esRequest;
2590         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2591             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2592         toKeep = r->u.update->u.esRequest->toKeep =
2593             (Z_IUOriginPartToKeep *)
2594             odr_malloc(p->odr_out, sizeof(*toKeep));
2595
2596         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2597         toKeep->schema = 0;
2598         toKeep->elementSetName = 0;
2599         toKeep->actionQualifier = 0;
2600         toKeep->action = odr_intdup(p->odr_out, action_no);
2601
2602         notToKeep = r->u.update->u.esRequest->notToKeep =
2603             (Z_IUSuppliedRecords *)
2604             odr_malloc(p->odr_out, sizeof(*notToKeep));
2605         notToKeep->num = 1;
2606         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2607             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2608         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2609             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2610         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2611         if (recordIdOpaque)
2612         {
2613             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2614                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2615             notToKeep->elements[0]->u.opaque->size =
2616                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2617             notToKeep->elements[0]->u.opaque->buf = (unsigned char*)
2618                 odr_strdup(p->odr_out, recordIdOpaque);
2619         }
2620         else if (recordIdNumber)
2621         {
2622             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2623
2624             notToKeep->elements[0]->u.number =
2625                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2626         }
2627         else
2628             notToKeep->elements[0]->u.opaque = 0;
2629         notToKeep->elements[0]->supplementalId = 0;
2630         notToKeep->elements[0]->correlationInfo = 0;
2631         notToKeep->elements[0]->record =
2632             z_ext_record(p->odr_out, syntax_oid,
2633                          record_buf, strlen(record_buf));
2634     }
2635     if (0 && apdu)
2636     {
2637        ODR print = odr_createmem(ODR_PRINT);
2638
2639        z_APDU(print, &apdu, 0, 0);
2640        odr_destroy(print);
2641     }
2642     return apdu;
2643 }
2644
2645 ZOOM_API(void)
2646     ZOOM_package_send (ZOOM_package p, const char *type)
2647 {
2648     Z_APDU *apdu = 0;
2649     ZOOM_connection c;
2650     if (!p)
2651         return;
2652     c = p->connection;
2653     odr_reset (p->odr_out);
2654     xfree (p->buf_out);
2655     p->buf_out = 0;
2656     if (!strcmp(type, "itemorder"))
2657     {
2658         apdu = create_es_package (p, VAL_ITEMORDER);
2659         if (apdu)
2660         {
2661             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2662
2663             r->direct_reference =
2664                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2665                                        VAL_ITEMORDER);
2666             r->descriptor = 0;
2667             r->which = Z_External_itemOrder;
2668             r->indirect_reference = 0;
2669             r->u.itemOrder = encode_item_order (p);
2670
2671             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2672         }
2673     }
2674     else if (!strcmp(type, "create"))  /* create database */
2675     {
2676         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2677                                     0, 0);
2678     }
2679     else if (!strcmp(type, "drop"))  /* drop database */
2680     {
2681         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2682                                     0, 0);
2683     }
2684     else if (!strcmp(type, "commit"))  /* commit changes */
2685     {
2686         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
2687                                     0, 0);
2688     }
2689     else if (!strcmp(type, "update")) /* update record(s) */
2690     {
2691         apdu = create_update_package(p);
2692     }
2693     if (apdu)
2694     {
2695         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2696         {
2697             char *buf;
2698
2699             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2700             task->u.package = p;
2701             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2702             p->buf_out = (char *) xmalloc (p->len_out);
2703             memcpy (p->buf_out, buf, p->len_out);
2704
2705             (p->refcount)++;
2706             if (!c->async)
2707             {
2708                 while (ZOOM_event (1, &c))
2709                     ;
2710             }
2711         }
2712     }
2713 }
2714
2715 ZOOM_API(ZOOM_package)
2716     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2717 {
2718     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2719
2720     p->connection = c;
2721     p->odr_out = odr_createmem (ODR_ENCODE);
2722     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2723     p->refcount = 1;
2724     p->buf_out = 0;
2725     p->len_out = 0;
2726     return p;
2727 }
2728
2729 ZOOM_API(void)
2730     ZOOM_package_destroy(ZOOM_package p)
2731 {
2732     if (!p)
2733         return;
2734     (p->refcount)--;
2735     if (p->refcount == 0)
2736     {
2737         odr_destroy (p->odr_out);
2738         xfree (p->buf_out);
2739
2740         ZOOM_options_destroy (p->options);
2741         xfree (p);
2742     }
2743 }
2744
2745 ZOOM_API(const char *)
2746 ZOOM_package_option_get (ZOOM_package p, const char *key)
2747 {
2748     return ZOOM_options_get (p->options, key);
2749 }
2750
2751
2752 ZOOM_API(void)
2753 ZOOM_package_option_set (ZOOM_package p, const char *key,
2754                               const char *val)
2755 {
2756     ZOOM_options_set (p->options, key, val);
2757 }
2758
2759 static int ZOOM_connection_exec_task (ZOOM_connection c)
2760 {
2761     ZOOM_task task = c->tasks;
2762     zoom_ret ret = zoom_complete;
2763
2764     if (!task)
2765     {
2766         yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task task=<null>");
2767         return 0;
2768     }
2769     yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task type=%d run=%d",
2770              task->which, task->running);
2771     if (c->error != ZOOM_ERROR_NONE)
2772     {
2773         yaz_log (LOG_DEBUG, "remove tasks because of error = %d", c->error);
2774         ZOOM_connection_remove_tasks (c);
2775         return 0;
2776     }
2777     if (task->running)
2778     {
2779         yaz_log (LOG_DEBUG, "task already running");
2780         return 0;
2781     }
2782     task->running = 1;
2783     ret = zoom_complete;
2784     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2785     {
2786         switch (task->which)
2787         {
2788         case ZOOM_TASK_SEARCH:
2789             if (c->proto == PROTO_HTTP)
2790                 ret = ZOOM_connection_srw_send_search(c);
2791             else
2792                 ret = ZOOM_connection_send_search(c);
2793             break;
2794         case ZOOM_TASK_RETRIEVE:
2795             if (c->proto == PROTO_HTTP)
2796                 ret = ZOOM_connection_srw_send_search(c);
2797             else
2798                 ret = send_present (c);
2799             break;
2800         case ZOOM_TASK_CONNECT:
2801             ret = do_connect(c);
2802             break;
2803         case ZOOM_TASK_SCAN:
2804             ret = send_scan(c);
2805             break;
2806         case ZOOM_TASK_PACKAGE:
2807             ret = send_package(c);
2808             break;
2809         case ZOOM_TASK_SORT:
2810             c->tasks->u.sort.resultset->r_sort_spec =
2811                 c->tasks->u.sort.q->sort_spec;
2812             ret = send_sort(c, c->tasks->u.sort.resultset);
2813             break;
2814         }
2815     }
2816     else
2817     {
2818         yaz_log (LOG_DEBUG, "remove tasks because no connection exist");
2819         ZOOM_connection_remove_tasks (c);
2820     }
2821     if (ret == zoom_complete)
2822     {
2823         yaz_log (LOG_DEBUG, "task removed (complete)");
2824         ZOOM_connection_remove_task (c);
2825         return 0;
2826     }
2827     yaz_log (LOG_DEBUG, "task pending");
2828     return 1;
2829 }
2830
2831 static zoom_ret send_sort_present (ZOOM_connection c)
2832 {
2833     zoom_ret r = zoom_complete;
2834
2835     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
2836         r = send_sort (c, c->tasks->u.search.resultset);
2837     if (r == zoom_complete)
2838         r = send_present (c);
2839     return r;
2840 }
2841
2842 static int es_response (ZOOM_connection c,
2843                         Z_ExtendedServicesResponse *res)
2844 {
2845     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2846         return 0;
2847     if (res->diagnostics && res->num_diagnostics > 0)
2848         response_diag(c, res->diagnostics[0]);
2849     if (res->taskPackage &&
2850         res->taskPackage->which == Z_External_extendedService)
2851     {
2852         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2853         Odr_oct *id = taskPackage->targetReference;
2854
2855         if (id)
2856             ZOOM_options_setl (c->tasks->u.package->options,
2857                                "targetReference", (char*) id->buf, id->len);
2858     }
2859     return 1;
2860 }
2861
2862
2863 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2864 {
2865     Z_InitResponse *initrs;
2866
2867     c->mask = 0;
2868     yaz_log (LOG_DEBUG, "recv APDU type=%d", apdu->which);
2869     switch(apdu->which)
2870     {
2871     case Z_APDU_initResponse:
2872         initrs = apdu->u.initResponse;
2873         ZOOM_connection_option_set(c, "serverImplementationId",
2874                                    initrs->implementationId ?
2875                                    initrs->implementationId : "");
2876         ZOOM_connection_option_set(c, "serverImplementationName",
2877                                    initrs->implementationName ?
2878                                    initrs->implementationName : "");
2879         ZOOM_connection_option_set(c, "serverImplementationVersion",
2880                                    initrs->implementationVersion ?
2881                                    initrs->implementationVersion : "");
2882         /* Set the three old options too, for old applications */
2883         ZOOM_connection_option_set(c, "targetImplementationId",
2884                                    initrs->implementationId ?
2885                                    initrs->implementationId : "");
2886         ZOOM_connection_option_set(c, "targetImplementationName",
2887                                    initrs->implementationName ?
2888                                    initrs->implementationName : "");
2889         ZOOM_connection_option_set(c, "targetImplementationVersion",
2890                                    initrs->implementationVersion ?
2891                                    initrs->implementationVersion : "");
2892         if (!*initrs->result)
2893         {
2894             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0);
2895         }
2896         else
2897         {
2898             char *cookie =
2899                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2900                                           VAL_COOKIE, 1, 0);
2901             xfree (c->cookie_in);
2902             c->cookie_in = 0;
2903             if (cookie)
2904                 c->cookie_in = xstrdup(cookie);
2905             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2906                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2907                 c->support_named_resultsets = 1;
2908             if (c->tasks)
2909             {
2910                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2911                 ZOOM_connection_remove_task (c);
2912             }
2913             ZOOM_connection_exec_task (c);
2914         }
2915         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2916         {
2917             NMEM tmpmem = nmem_create();
2918             Z_CharSetandLanguageNegotiation *p =
2919                 yaz_get_charneg_record(initrs->otherInfo);
2920
2921             if (p)
2922             {
2923                 char *charset=NULL, *lang=NULL;
2924                 int sel;
2925
2926                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2927                 yaz_log(LOG_DEBUG, "Target accepted: charset %s, "
2928                         "language %s, select %d",
2929                         charset ? charset : "none", lang ? lang : "none", sel);
2930                 if (charset)
2931                     ZOOM_connection_option_set (c, "negotiation-charset",
2932                                                 charset);
2933                 if (lang)
2934                     ZOOM_connection_option_set (c, "negotiation-lang",
2935                                                 lang);
2936                 nmem_destroy(tmpmem);
2937             }
2938         }
2939         break;
2940     case Z_APDU_searchResponse:
2941         handle_search_response (c, apdu->u.searchResponse);
2942         if (send_sort_present (c) == zoom_complete)
2943             ZOOM_connection_remove_task (c);
2944         break;
2945     case Z_APDU_presentResponse:
2946         handle_present_response (c, apdu->u.presentResponse);
2947         if (send_present (c) == zoom_complete)
2948             ZOOM_connection_remove_task (c);
2949         break;
2950     case Z_APDU_sortResponse:
2951         sort_response (c, apdu->u.sortResponse);
2952         if (send_present (c) == zoom_complete)
2953             ZOOM_connection_remove_task (c);
2954         break;
2955     case Z_APDU_scanResponse:
2956         scan_response (c, apdu->u.scanResponse);
2957         ZOOM_connection_remove_task (c);
2958         break;
2959     case Z_APDU_extendedServicesResponse:
2960         es_response (c, apdu->u.extendedServicesResponse);
2961         ZOOM_connection_remove_task (c);
2962         break;
2963     case Z_APDU_close:
2964         if (c->reconnect_ok)
2965         {
2966             do_close(c);
2967             c->tasks->running = 0;
2968             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2969         }
2970         else
2971         {
2972             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2973             do_close(c);
2974         }
2975         break;
2976     default:
2977         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2978         do_close(c);
2979     }
2980 }
2981
2982 #if HAVE_XML2
2983 static void handle_srw_response(ZOOM_connection c,
2984                                 Z_SRW_searchRetrieveResponse *res)
2985 {
2986     ZOOM_resultset resultset = 0;
2987     int i;
2988     NMEM nmem;
2989     ZOOM_Event event;
2990
2991     if (!c->tasks)
2992         return;
2993
2994     if (c->tasks->which == ZOOM_TASK_SEARCH)
2995         resultset = c->tasks->u.search.resultset;
2996     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
2997         resultset = c->tasks->u.retrieve.resultset;
2998     else
2999         return ;
3000
3001     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3002     ZOOM_connection_put_event(c, event);
3003
3004     resultset->size = 0;
3005
3006     yaz_log(LOG_DEBUG, "got SRW response OK");
3007
3008     if (res->numberOfRecords)
3009         resultset->size = *res->numberOfRecords;
3010
3011     for (i = 0; i<res->num_records; i++)
3012     {
3013         int pos;
3014
3015         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3016             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3017
3018         if (res->records[i].recordPosition &&
3019             *res->records[i].recordPosition > 0)
3020             pos = *res->records[i].recordPosition - 1;
3021         else
3022             pos = resultset->start + i;
3023
3024         npr->databaseName = 0;
3025         npr->which = Z_NamePlusRecord_databaseRecord;
3026         npr->u.databaseRecord = (Z_External *)
3027             odr_malloc(c->odr_in, sizeof(Z_External));
3028         npr->u.databaseRecord->descriptor = 0;
3029         npr->u.databaseRecord->direct_reference =
3030             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3031         npr->u.databaseRecord->which = Z_External_octet;
3032         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3033             odr_malloc(c->odr_in, sizeof(Odr_oct));
3034         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3035             res->records[i].recordData_buf;
3036         npr->u.databaseRecord->u.octet_aligned->len =
3037             npr->u.databaseRecord->u.octet_aligned->size =
3038             res->records[i].recordData_len;
3039         record_cache_add (resultset, npr, pos);
3040     }
3041     if (res->num_diagnostics > 0)
3042     {
3043         const char *uri = res->diagnostics[0].uri;
3044         if (uri)
3045         {
3046             int code = 0;
3047             const char *cp;
3048             if ((cp = strrchr(uri, '/')))
3049                 code = atoi(cp+1);
3050             set_dset_error(c, code, uri,
3051                            res->diagnostics[0].details, 0);
3052         }
3053     }
3054     nmem = odr_extract_mem(c->odr_in);
3055     nmem_transfer(resultset->odr->mem, nmem);
3056     nmem_destroy(nmem);
3057 }
3058 #endif
3059
3060 #if HAVE_XML2
3061 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3062 {
3063     int ret = -1;
3064     const char *content_type = z_HTTP_header_lookup(hres->headers,
3065                                                     "Content-Type");
3066     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3067                                                        "Connection");
3068     c->mask = 0;
3069     yaz_log (LOG_DEBUG, "handle_http");
3070
3071     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3072     {
3073         Z_SOAP *soap_package = 0;
3074         ODR o = c->odr_in;
3075         Z_SOAP_Handler soap_handlers[2] = {
3076             {"http://www.loc.gov/zing/srw/", 0,
3077              (Z_SOAP_fun) yaz_srw_codec},
3078             {0, 0, 0}
3079         };
3080         ret = z_soap_codec(o, &soap_package,
3081                            &hres->content_buf, &hres->content_len,
3082                            soap_handlers);
3083         if (!ret && soap_package->which == Z_SOAP_generic &&
3084             soap_package->u.generic->no == 0)
3085         {
3086             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3087             if (sr->which == Z_SRW_searchRetrieve_response)
3088                 handle_srw_response(c, sr->u.response);
3089             else
3090                 ret = -1;
3091         }
3092         else if (!ret && (soap_package->which == Z_SOAP_fault
3093                           || soap_package->which == Z_SOAP_error))
3094         {
3095             set_HTTP_error(c, hres->code,
3096                            soap_package->u.fault->fault_code,
3097                            soap_package->u.fault->fault_string);
3098         }
3099         else
3100             ret = -1;
3101     }
3102     if (ret)
3103     {
3104         if (hres->code != 200)
3105             set_HTTP_error(c, hres->code, 0, 0);
3106         else
3107             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3108         do_close (c);
3109     }
3110     ZOOM_connection_remove_task(c);
3111     if (!strcmp(hres->version, "1.0"))
3112     {
3113         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3114         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3115             do_close(c);
3116     }
3117     else
3118     {
3119         /* HTTP 1.1: only if no close we stay alive .. */
3120         if (connection_head && !strcmp(connection_head, "close"))
3121             do_close(c);
3122     }
3123 }
3124 #endif
3125
3126 static int do_read (ZOOM_connection c)
3127 {
3128     int r, more;
3129     ZOOM_Event event;
3130
3131     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3132     ZOOM_connection_put_event (c, event);
3133
3134     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3135     more = cs_more(c->cs);
3136     yaz_log (LOG_DEBUG, "do_read len=%d more=%d", r, more);
3137     if (r == 1)
3138         return 0;
3139     if (r <= 0)
3140     {
3141         if (c->reconnect_ok)
3142         {
3143             do_close (c);
3144             c->reconnect_ok = 0;
3145             yaz_log (LOG_DEBUG, "reconnect read");
3146             c->tasks->running = 0;
3147             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3148         }
3149         else
3150         {
3151             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3152             do_close (c);
3153         }
3154     }
3155     else
3156     {
3157         Z_GDU *gdu;
3158         ZOOM_Event event;
3159
3160         odr_reset (c->odr_in);
3161         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3162         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3163         ZOOM_connection_put_event (c, event);
3164
3165         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3166         {
3167             int x;
3168             int err = odr_geterrorx(c->odr_in, &x);
3169             char msg[60];
3170             const char *element = odr_getelement(c->odr_in);
3171             sprintf (msg, "ODR code %d:%d element=%-20s",
3172                      err, x, element ? element : "<unknown>");
3173             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3174             do_close (c);
3175         }
3176         else if (gdu->which == Z_GDU_Z3950)
3177             handle_apdu (c, gdu->u.z3950);
3178         else if (gdu->which == Z_GDU_HTTP_Response)
3179         {
3180 #if HAVE_XML2
3181             handle_http (c, gdu->u.HTTP_Response);
3182 #else
3183             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3184             do_close (c);
3185 #endif
3186         }
3187         c->reconnect_ok = 0;
3188     }
3189     return 1;
3190 }
3191
3192 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3193 {
3194     int r;
3195     ZOOM_Event event;
3196
3197     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3198     ZOOM_connection_put_event (c, event);
3199
3200     yaz_log (LOG_DEBUG, "do_write_ex len=%d", len_out);
3201     if ((r=cs_put (c->cs, buf_out, len_out)) < 0)
3202     {
3203         if (c->reconnect_ok)
3204         {
3205             do_close (c);
3206             c->reconnect_ok = 0;
3207             yaz_log (LOG_DEBUG, "reconnect write");
3208             c->tasks->running = 0;
3209             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3210             return zoom_pending;
3211         }
3212         if (c->state == STATE_CONNECTING)
3213             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3214         else
3215             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3216         do_close (c);
3217         return zoom_complete;
3218     }
3219     else if (r == 1)
3220     {
3221         c->mask = ZOOM_SELECT_EXCEPT;
3222         if (c->cs->io_pending & CS_WANT_WRITE)
3223             c->mask += ZOOM_SELECT_WRITE;
3224         if (c->cs->io_pending & CS_WANT_READ)
3225             c->mask += ZOOM_SELECT_READ;
3226         yaz_log (LOG_DEBUG, "do_write_ex 1 mask=%d", c->mask);
3227     }
3228     else
3229     {
3230         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3231         yaz_log (LOG_DEBUG, "do_write_ex 2 mask=%d", c->mask);
3232     }
3233     return zoom_pending;
3234 }
3235
3236 static zoom_ret do_write(ZOOM_connection c)
3237 {
3238     return do_write_ex (c, c->buf_out, c->len_out);
3239 }
3240
3241
3242 ZOOM_API(const char *)
3243 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3244 {
3245     return ZOOM_options_get (c->options, key);
3246 }
3247
3248 ZOOM_API(void)
3249 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3250                             const char *val)
3251 {
3252     ZOOM_options_set (c->options, key, val);
3253 }
3254
3255 ZOOM_API(void)
3256 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3257                              const char *val, int len)
3258 {
3259     ZOOM_options_setl (c->options, key, val, len);
3260 }
3261
3262 ZOOM_API(const char *)
3263 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3264 {
3265     return ZOOM_options_get (r->options, key);
3266 }
3267
3268 ZOOM_API(void)
3269 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3270                                   const char *val)
3271 {
3272     ZOOM_options_set (r->options, key, val);
3273 }
3274
3275
3276 ZOOM_API(int)
3277 ZOOM_connection_errcode (ZOOM_connection c)
3278 {
3279     return ZOOM_connection_error (c, 0, 0);
3280 }
3281
3282 ZOOM_API(const char *)
3283 ZOOM_connection_errmsg (ZOOM_connection c)
3284 {
3285     const char *msg;
3286     ZOOM_connection_error (c, &msg, 0);
3287     return msg;
3288 }
3289
3290 ZOOM_API(const char *)
3291 ZOOM_connection_addinfo (ZOOM_connection c)
3292 {
3293     const char *addinfo;
3294     ZOOM_connection_error (c, 0, &addinfo);
3295     return addinfo;
3296 }
3297
3298 ZOOM_API(const char *)
3299 ZOOM_diag_str (int error)
3300 {
3301     switch (error)
3302     {
3303     case ZOOM_ERROR_NONE:
3304         return "No error";
3305     case ZOOM_ERROR_CONNECT:
3306         return "Connect failed";
3307     case ZOOM_ERROR_MEMORY:
3308         return "Out of memory";
3309     case ZOOM_ERROR_ENCODE:
3310         return "Encoding failed";
3311     case ZOOM_ERROR_DECODE:
3312         return "Decoding failed";
3313     case ZOOM_ERROR_CONNECTION_LOST:
3314         return "Connection lost";
3315     case ZOOM_ERROR_INIT:
3316         return "Init rejected";
3317     case ZOOM_ERROR_INTERNAL:
3318         return "Internal failure";
3319     case ZOOM_ERROR_TIMEOUT:
3320         return "Timeout";
3321     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3322         return "Unsupported protocol";
3323     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3324         return "Unsupported query type";
3325     case ZOOM_ERROR_INVALID_QUERY:
3326         return "Invalid query";
3327     default:
3328         return diagbib1_str (error);
3329     }
3330 }
3331
3332 ZOOM_API(int)
3333 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3334                          const char **addinfo, const char **diagset)
3335 {
3336     int error = c->error;
3337     if (cp)
3338     {
3339         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3340             *cp = ZOOM_diag_str(error);
3341         else if (!strcmp(c->diagset, "HTTP"))
3342             *cp = z_HTTP_errmsg(c->error);
3343         else if (!strcmp(c->diagset, "Bib-1"))
3344             *cp = ZOOM_diag_str(error);
3345         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3346             *cp = yaz_diag_srw_str(c->error);
3347         else
3348             *cp = "Unknown error and diagnostic set";
3349     }
3350     if (addinfo)
3351         *addinfo = c->addinfo ? c->addinfo : "";
3352     if (diagset)
3353         *diagset = c->diagset ? c->diagset : "";
3354     return c->error;
3355 }
3356
3357 ZOOM_API(int)
3358 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3359                        const char **addinfo)
3360 {
3361     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3362 }
3363
3364 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3365 {
3366     ZOOM_Event event = 0;
3367     int r = cs_look(c->cs);
3368     yaz_log (LOG_DEBUG, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
3369              c, mask, r);
3370
3371     if (r == CS_NONE)
3372     {
3373         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3374         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3375         do_close (c);
3376         ZOOM_connection_put_event (c, event);
3377     }
3378     else if (r == CS_CONNECT)
3379     {
3380         int ret;
3381         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3382
3383         ret = cs_rcvconnect (c->cs);
3384         yaz_log (LOG_DEBUG, "cs_rcvconnect returned %d", ret);
3385         if (ret == 1)
3386         {
3387             c->mask = ZOOM_SELECT_EXCEPT;
3388             if (c->cs->io_pending & CS_WANT_WRITE)
3389                 c->mask += ZOOM_SELECT_WRITE;
3390             if (c->cs->io_pending & CS_WANT_READ)
3391                 c->mask += ZOOM_SELECT_READ;
3392             ZOOM_connection_put_event (c, event);
3393         }
3394         else if (ret == 0)
3395         {
3396             ZOOM_connection_put_event (c, event);
3397             get_cert(c);
3398             if (c->proto == PROTO_Z3950)
3399                 ZOOM_connection_send_init(c);
3400             else
3401             {
3402                 /* no init request for SRW .. */
3403                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3404                 ZOOM_connection_remove_task (c);
3405                 c->mask = 0;
3406                 ZOOM_connection_exec_task (c);
3407             }
3408             c->state = STATE_ESTABLISHED;
3409         }
3410         else
3411         {
3412             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3413             do_close (c);
3414             ZOOM_connection_put_event (c, event);
3415         }
3416     }
3417     else
3418     {
3419         if (mask & ZOOM_SELECT_READ)
3420             do_read (c);
3421         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3422             do_write (c);
3423     }
3424     return 1;
3425 }
3426
3427 ZOOM_API(int)
3428 ZOOM_connection_last_event(ZOOM_connection cs)
3429 {
3430     if (!cs)
3431         return ZOOM_EVENT_NONE;
3432     return cs->last_event;
3433 }
3434
3435 ZOOM_API(int)
3436 ZOOM_event (int no, ZOOM_connection *cs)
3437 {
3438     int timeout = 5000;
3439 #if HAVE_SYS_POLL_H
3440     struct pollfd pollfds[1024];
3441     ZOOM_connection poll_cs[1024];
3442 #else
3443     struct timeval tv;
3444     fd_set input, output, except;
3445 #endif
3446     int i, r, nfds;
3447     int max_fd = 0;
3448
3449     for (i = 0; i<no; i++)
3450     {
3451         ZOOM_connection c = cs[i];
3452         ZOOM_Event event;
3453         if (c && (event = ZOOM_connection_get_event(c)))
3454         {
3455             ZOOM_Event_destroy (event);
3456             return i+1;
3457         }
3458     }
3459     for (i = 0; i<no; i++)
3460     {
3461         ZOOM_connection c = cs[i];
3462         ZOOM_Event event;
3463         if (c && ZOOM_connection_exec_task (c))
3464         {
3465             if ((event = ZOOM_connection_get_event(c)))
3466             {
3467                 ZOOM_Event_destroy (event);
3468                 return i+1;
3469             }
3470         }
3471     }
3472 #if HAVE_SYS_POLL_H
3473
3474 #else
3475     FD_ZERO (&input);
3476     FD_ZERO (&output);
3477     FD_ZERO (&except);
3478 #endif
3479     nfds = 0;
3480     for (i = 0; i<no; i++)
3481     {
3482         ZOOM_connection c = cs[i];
3483         int fd, mask;
3484         int this_timeout;
3485
3486         if (!c)
3487             continue;
3488         fd = z3950_connection_socket(c);
3489         mask = z3950_connection_mask(c);
3490
3491         if (fd == -1)
3492             continue;
3493         if (max_fd < fd)
3494             max_fd = fd;
3495
3496         this_timeout = ZOOM_options_get_int (c->options, "timeout", -1);
3497         if (this_timeout != -1 && this_timeout < timeout)
3498             timeout = this_timeout;
3499 #if HAVE_SYS_POLL_H
3500         if (mask)
3501         {
3502             short poll_events = 0;
3503
3504             if (mask & ZOOM_SELECT_READ)
3505                 poll_events += POLLIN;
3506             if (mask & ZOOM_SELECT_WRITE)
3507                 poll_events += POLLOUT;
3508             if (mask & ZOOM_SELECT_EXCEPT)
3509                 poll_events += POLLERR;
3510             pollfds[nfds].fd = fd;
3511             pollfds[nfds].events = poll_events;
3512             pollfds[nfds].revents = 0;
3513             poll_cs[nfds] = c;
3514             nfds++;
3515         }
3516 #else
3517         if (mask & ZOOM_SELECT_READ)
3518         {
3519             FD_SET (fd, &input);
3520             nfds++;
3521         }
3522         if (mask & ZOOM_SELECT_WRITE)
3523         {
3524             FD_SET (fd, &output);
3525             nfds++;
3526         }
3527         if (mask & ZOOM_SELECT_EXCEPT)
3528         {
3529             FD_SET (fd, &except);
3530             nfds++;
3531         }
3532 #endif
3533     }
3534     if (timeout >= 5000)
3535         timeout = 30;
3536
3537     if (!nfds)
3538         return 0;
3539
3540 #if HAVE_SYS_POLL_H
3541     r = poll (pollfds, nfds, timeout * 1000);
3542     for (i = 0; i<nfds; i++)
3543     {
3544         ZOOM_connection c = poll_cs[i];
3545         if (r && c->mask)
3546         {
3547             int mask = 0;
3548             if (pollfds[i].revents & POLLIN)
3549                 mask += ZOOM_SELECT_READ;
3550             if (pollfds[i].revents & POLLOUT)
3551                 mask += ZOOM_SELECT_WRITE;
3552             if (pollfds[i].revents & POLLERR)
3553                 mask += ZOOM_SELECT_EXCEPT;
3554             if (mask)
3555                 ZOOM_connection_do_io(c, mask);
3556         }
3557         else if (r == 0 && c->mask)
3558         {
3559             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3560             /* timeout and this connection was waiting */
3561             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3562             do_close (c);
3563             ZOOM_connection_put_event(c, event);
3564         }
3565     }
3566 #else
3567     tv.tv_sec = timeout;
3568     tv.tv_usec = 0;
3569     yaz_log (LOG_DEBUG, "select start");
3570     r = select (max_fd+1, &input, &output, &except, &tv);
3571     yaz_log (LOG_DEBUG, "select stop, returned r=%d", r);
3572     for (i = 0; i<no; i++)
3573     {
3574         ZOOM_connection c = cs[i];
3575         int fd, mask;
3576
3577         if (!c)
3578             continue;
3579         fd = z3950_connection_socket(c);
3580         mask = 0;
3581         if (r && c->mask)
3582         {
3583             /* no timeout and real socket */
3584             if (FD_ISSET(fd, &input))
3585                 mask += ZOOM_SELECT_READ;
3586             if (FD_ISSET(fd, &output))
3587                 mask += ZOOM_SELECT_WRITE;
3588             if (FD_ISSET(fd, &except))
3589                 mask += ZOOM_SELECT_EXCEPT;
3590             if (mask)
3591                 ZOOM_connection_do_io(c, mask);
3592         }
3593         if (r == 0 && c->mask)
3594         {
3595             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3596             /* timeout and this connection was waiting */
3597             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3598             do_close (c);
3599             yaz_log (LOG_DEBUG, "timeout");
3600             ZOOM_connection_put_event(c, event);
3601         }
3602     }
3603 #endif
3604     for (i = 0; i<no; i++)
3605     {
3606         ZOOM_connection c = cs[i];
3607         ZOOM_Event event;
3608         if (c && (event = ZOOM_connection_get_event(c)))
3609         {
3610             ZOOM_Event_destroy (event);
3611             return i+1;
3612         }
3613     }
3614     return 0;
3615 }