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 1.29 2004-08-02 10:06:34 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 = 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 = 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: 1.29 $");
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 = 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 = 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 = 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                                        r->u.sutrs->buf, r->u.sutrs->len,
1669                                        charset);
1670         else if (r->which == Z_External_octet)
1671         {
1672             const char *ret_buf;
1673             switch (ent->value)
1674             {
1675             case VAL_SOIF:
1676             case VAL_HTML:
1677             case VAL_SUTRS:
1678                 break;
1679             case VAL_TEXT_XML:
1680             case VAL_APPLICATION_XML:
1681                 break;
1682             default:
1683                 ret_buf = marc_iconv_return(
1684                     rec, YAZ_MARC_LINE, len,
1685                     (const char *) r->u.octet_aligned->buf,
1686                     r->u.octet_aligned->len,
1687                     charset);
1688                 if (ret_buf)
1689                     return ret_buf;
1690             }
1691             return record_iconv_return(rec, len,
1692                                        (const char *) r->u.octet_aligned->buf,
1693                                        r->u.octet_aligned->len,
1694                                        charset);
1695         }
1696         else if (r->which == Z_External_grs1)
1697         {
1698             if (!rec->wrbuf_marc)
1699                 rec->wrbuf_marc = wrbuf_alloc();
1700             wrbuf_rewind (rec->wrbuf_marc);
1701             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1702             return record_iconv_return(rec, len,
1703                                        wrbuf_buf(rec->wrbuf_marc),
1704                                        wrbuf_len(rec->wrbuf_marc),
1705                                        charset);
1706         }
1707         return 0;
1708     }
1709     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1710     {
1711         Z_External *r = (Z_External *) npr->u.databaseRecord;
1712         oident *ent = oid_getentbyoid(r->direct_reference);
1713
1714         /* render bibliographic record .. */
1715         if (r->which == Z_External_OPAC)
1716         {
1717             r = r->u.opac->bibliographicRecord;
1718             if (!r)
1719                 return 0;
1720             ent = oid_getentbyoid(r->direct_reference);
1721         }
1722
1723         if (r->which == Z_External_sutrs)
1724             return record_iconv_return(rec, len,
1725                                        (const char *) r->u.sutrs->buf,
1726                                        r->u.sutrs->len,
1727                                        charset);
1728         else if (r->which == Z_External_octet)
1729         {
1730             const char *ret_buf;
1731             int marc_decode_type = YAZ_MARC_MARCXML;
1732
1733             if (!strcmp(type, "oai"))
1734                 marc_decode_type = YAZ_MARC_OAIMARC;
1735             switch (ent->value)
1736             {
1737             case VAL_SOIF:
1738             case VAL_HTML:
1739             case VAL_SUTRS:
1740                 break;
1741             case VAL_TEXT_XML:
1742             case VAL_APPLICATION_XML:
1743                 break;
1744             default:
1745                 ret_buf = marc_iconv_return(
1746                     rec, marc_decode_type, len,
1747                     (const char *) r->u.octet_aligned->buf,
1748                     r->u.octet_aligned->len,
1749                     charset);
1750                 if (ret_buf)
1751                     return ret_buf;
1752             }
1753             return record_iconv_return(rec, len,
1754                                        (const char *) r->u.octet_aligned->buf,
1755                                        r->u.octet_aligned->len,
1756                                        charset);
1757         }
1758         else if (r->which == Z_External_grs1)
1759         {
1760             if (len) *len = 5;
1761             return "GRS-1";
1762         }
1763         return 0;
1764     }
1765     else if (!strcmp (type, "raw"))
1766     {
1767         Z_External *r = (Z_External *) npr->u.databaseRecord;
1768
1769         if (r->which == Z_External_sutrs)
1770         {
1771             if (len) *len = r->u.sutrs->len;
1772             return (const char *) r->u.sutrs->buf;
1773         }
1774         else if (r->which == Z_External_octet)
1775         {
1776             if (len) *len = r->u.octet_aligned->len;
1777             return (const char *) r->u.octet_aligned->buf;
1778         }
1779         else /* grs-1, explain, OPAC, ... */
1780         {
1781             if (len) *len = -1;
1782             return (const char *) npr->u.databaseRecord;
1783         }
1784         return 0;
1785     }
1786     else if (!strcmp (type, "ext"))
1787     {
1788         if (len) *len = -1;
1789         return (const char *) npr->u.databaseRecord;
1790     }
1791     else if (!strcmp (type, "opac"))
1792
1793     {
1794         Z_External *r = (Z_External *) npr->u.databaseRecord;
1795         if (r->which == Z_External_OPAC)
1796         {
1797             if (!rec->wrbuf_opac)
1798                 rec->wrbuf_opac = wrbuf_alloc();
1799             wrbuf_rewind (rec->wrbuf_opac);
1800             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1801             return record_iconv_return(rec, len,
1802                                        wrbuf_buf(rec->wrbuf_opac),
1803                                        wrbuf_len(rec->wrbuf_opac),
1804                                        charset);
1805         }
1806     }
1807     return 0;
1808 }
1809
1810 static int strcmp_null(const char *v1, const char *v2)
1811 {
1812     if (!v1 && !v2)
1813         return 0;
1814     if (!v1 || !v2)
1815         return -1;
1816     return strcmp(v1, v2);
1817 }
1818
1819 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1820                               int pos)
1821 {
1822     ZOOM_record_cache rc;
1823     const char *elementSetName =
1824         ZOOM_resultset_option_get (r, "elementSetName");
1825     const char *syntax =
1826         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1827
1828     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1829     ZOOM_connection_put_event(r->connection, event);
1830
1831     for (rc = r->record_cache; rc; rc = rc->next)
1832     {
1833         if (pos == rc->pos)
1834         {
1835             if (strcmp_null(r->schema, rc->schema))
1836                 continue;
1837             if (strcmp_null(elementSetName,rc->elementSetName))
1838                 continue;
1839             if (strcmp_null(syntax, rc->syntax))
1840                 continue;
1841             /* not destroying rc->npr (it's handled by nmem )*/
1842             rc->rec.npr = npr;
1843             /* keeping wrbuf_marc too */
1844             return;
1845         }
1846     }
1847     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1848     rc->rec.npr = npr;
1849     rc->rec.odr = 0;
1850     rc->rec.wrbuf_marc = 0;
1851     rc->rec.wrbuf_iconv = 0;
1852     rc->rec.wrbuf_opac = 0;
1853     if (elementSetName)
1854         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1855     else
1856         rc->elementSetName = 0;
1857
1858     if (syntax)
1859         rc->syntax = odr_strdup (r->odr, syntax);
1860     else
1861         rc->syntax = 0;
1862
1863     if (r->schema)
1864         rc->schema = odr_strdup (r->odr, r->schema);
1865     else
1866         rc->schema = 0;
1867
1868     rc->pos = pos;
1869     rc->next = r->record_cache;
1870     r->record_cache = rc;
1871 }
1872
1873 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1874 {
1875     ZOOM_record_cache rc;
1876     const char *elementSetName =
1877         ZOOM_resultset_option_get (r, "elementSetName");
1878     const char *syntax =
1879         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1880
1881     for (rc = r->record_cache; rc; rc = rc->next)
1882     {
1883         if (pos == rc->pos)
1884         {
1885             if (strcmp_null(r->schema, rc->schema))
1886                 continue;
1887             if (strcmp_null(elementSetName,rc->elementSetName))
1888                 continue;
1889             if (strcmp_null(syntax, rc->syntax))
1890                 continue;
1891             return &rc->rec;
1892         }
1893     }
1894     return 0;
1895 }
1896
1897 static void handle_records (ZOOM_connection c, Z_Records *sr,
1898                             int present_phase)
1899 {
1900     ZOOM_resultset resultset;
1901
1902     if (!c->tasks)
1903         return ;
1904     switch (c->tasks->which)
1905     {
1906     case ZOOM_TASK_SEARCH:
1907         resultset = c->tasks->u.search.resultset;
1908         break;
1909     case ZOOM_TASK_RETRIEVE:
1910         resultset = c->tasks->u.retrieve.resultset;
1911         break;
1912     default:
1913         return;
1914     }
1915     if (sr && sr->which == Z_Records_NSD)
1916     {
1917         Z_DiagRec dr, *dr_p = &dr;
1918         dr.which = Z_DiagRec_defaultFormat;
1919         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1920
1921         response_diag (c, dr_p);
1922     }
1923     else if (sr && sr->which == Z_Records_multipleNSD)
1924     {
1925         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1926             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1927         else
1928             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1929     }
1930     else
1931     {
1932         if (resultset->count + resultset->start > resultset->size)
1933             resultset->count = resultset->size - resultset->start;
1934         if (resultset->count < 0)
1935             resultset->count = 0;
1936         if (sr && sr->which == Z_Records_DBOSD)
1937         {
1938             int i;
1939             NMEM nmem = odr_extract_mem (c->odr_in);
1940             Z_NamePlusRecordList *p =
1941                 sr->u.databaseOrSurDiagnostics;
1942             for (i = 0; i<p->num_records; i++)
1943             {
1944                 record_cache_add (resultset, p->records[i],
1945                                   i+ resultset->start);
1946             }
1947             /* transfer our response to search_nmem .. we need it later */
1948             nmem_transfer (resultset->odr->mem, nmem);
1949             nmem_destroy (nmem);
1950             if (present_phase && p->num_records == 0)
1951             {
1952                 /* present response and we didn't get any records! */
1953                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1954             }
1955         }
1956         else if (present_phase)
1957         {
1958             /* present response and we didn't get any records! */
1959             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1960         }
1961     }
1962 }
1963
1964 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1965 {
1966     handle_records (c, pr->records, 1);
1967 }
1968
1969 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1970 {
1971     ZOOM_resultset resultset;
1972     ZOOM_Event event;
1973
1974     yaz_log (LOG_DEBUG, "got search response");
1975
1976     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1977         return ;
1978
1979     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
1980     ZOOM_connection_put_event(c, event);
1981
1982     resultset = c->tasks->u.search.resultset;
1983
1984     resultset->size = *sr->resultCount;
1985     handle_records (c, sr->records, 0);
1986 }
1987
1988 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
1989 {
1990     if (res->diagnostics && res->num_diagnostics > 0)
1991         response_diag (c, res->diagnostics[0]);
1992 }
1993
1994 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
1995 {
1996     NMEM nmem = odr_extract_mem (c->odr_in);
1997     ZOOM_scanset scan;
1998
1999     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2000         return 0;
2001     scan = c->tasks->u.scan.scan;
2002
2003     if (res->entries && res->entries->nonsurrogateDiagnostics)
2004         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2005     scan->scan_response = res;
2006     nmem_transfer (scan->odr->mem, nmem);
2007     if (res->stepSize)
2008         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2009     if (res->positionOfTerm)
2010         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2011     if (res->scanStatus)
2012         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2013     if (res->numberOfEntriesReturned)
2014         ZOOM_options_set_int (scan->options, "number",
2015                               *res->numberOfEntriesReturned);
2016     nmem_destroy (nmem);
2017     return 1;
2018 }
2019
2020 static zoom_ret send_sort (ZOOM_connection c,
2021                            ZOOM_resultset resultset)
2022 {
2023     if (c->error)
2024         resultset->r_sort_spec = 0;
2025     if (resultset->r_sort_spec)
2026     {
2027         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2028         Z_SortRequest *req = apdu->u.sortRequest;
2029
2030         req->num_inputResultSetNames = 1;
2031         req->inputResultSetNames = (Z_InternationalString **)
2032             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2033         req->inputResultSetNames[0] =
2034             odr_strdup (c->odr_out, resultset->setname);
2035         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2036         req->sortSequence = resultset->r_sort_spec;
2037         resultset->r_sort_spec = 0;
2038         return send_APDU (c, apdu);
2039     }
2040     return zoom_complete;
2041 }
2042
2043 static zoom_ret send_present (ZOOM_connection c)
2044 {
2045     Z_APDU *apdu = 0;
2046     Z_PresentRequest *req = 0;
2047     int i = 0;
2048     const char *syntax = 0;
2049     const char *elementSetName = 0;
2050     ZOOM_resultset  resultset;
2051
2052     if (!c->tasks)
2053         return zoom_complete;
2054
2055     switch (c->tasks->which)
2056     {
2057     case ZOOM_TASK_SEARCH:
2058         resultset = c->tasks->u.search.resultset;
2059         break;
2060     case ZOOM_TASK_RETRIEVE:
2061         resultset = c->tasks->u.retrieve.resultset;
2062         resultset->start = c->tasks->u.retrieve.start;
2063         resultset->count = c->tasks->u.retrieve.count;
2064
2065         if (resultset->start >= resultset->size)
2066             return zoom_complete;
2067         if (resultset->start + resultset->count > resultset->size)
2068             resultset->count = resultset->size - resultset->start;
2069         break;
2070     default:
2071         return zoom_complete;
2072     }
2073
2074     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2075     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2076
2077     if (c->error)                  /* don't continue on error */
2078         return zoom_complete;
2079     if (resultset->start < 0)
2080         return zoom_complete;
2081     for (i = 0; i<resultset->count; i++)
2082     {
2083         ZOOM_record rec =
2084             record_cache_lookup (resultset, i + resultset->start);
2085         if (!rec)
2086             break;
2087     }
2088     if (i == resultset->count)
2089         return zoom_complete;
2090
2091     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2092     req = apdu->u.presentRequest;
2093
2094     resultset->start += i;
2095     resultset->count -= i;
2096     *req->resultSetStartPoint = resultset->start + 1;
2097     *req->numberOfRecordsRequested = resultset->step>0 ?
2098         resultset->step : resultset->count;
2099     assert (*req->numberOfRecordsRequested > 0);
2100
2101     if (syntax && *syntax)
2102         req->preferredRecordSyntax =
2103             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2104
2105     if (resultset->schema && *resultset->schema)
2106     {
2107         Z_RecordComposition *compo = (Z_RecordComposition *)
2108             odr_malloc (c->odr_out, sizeof(*compo));
2109
2110         req->recordComposition = compo;
2111         compo->which = Z_RecordComp_complex;
2112         compo->u.complex = (Z_CompSpec *)
2113             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2114         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2115             odr_malloc(c->odr_out, sizeof(bool_t));
2116         *compo->u.complex->selectAlternativeSyntax = 0;
2117
2118         compo->u.complex->generic = (Z_Specification *)
2119             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2120
2121         compo->u.complex->generic->which = Z_Schema_oid;
2122         compo->u.complex->generic->schema.oid = (Odr_oid *)
2123             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2124
2125         if (!compo->u.complex->generic->schema.oid)
2126         {
2127             /* OID wasn't a schema! Try record syntax instead. */
2128
2129             compo->u.complex->generic->schema.oid = (Odr_oid *)
2130                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2131         }
2132         if (elementSetName && *elementSetName)
2133         {
2134             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2135                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2136             compo->u.complex->generic->elementSpec->which =
2137                 Z_ElementSpec_elementSetName;
2138             compo->u.complex->generic->elementSpec->u.elementSetName =
2139                 odr_strdup (c->odr_out, elementSetName);
2140         }
2141         else
2142             compo->u.complex->generic->elementSpec = 0;
2143         compo->u.complex->num_dbSpecific = 0;
2144         compo->u.complex->dbSpecific = 0;
2145         compo->u.complex->num_recordSyntax = 0;
2146         compo->u.complex->recordSyntax = 0;
2147     }
2148     else if (elementSetName && *elementSetName)
2149     {
2150         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2151             odr_malloc (c->odr_out, sizeof(*esn));
2152         Z_RecordComposition *compo = (Z_RecordComposition *)
2153             odr_malloc (c->odr_out, sizeof(*compo));
2154
2155         esn->which = Z_ElementSetNames_generic;
2156         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2157         compo->which = Z_RecordComp_simple;
2158         compo->u.simple = esn;
2159         req->recordComposition = compo;
2160     }
2161     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2162     return send_APDU (c, apdu);
2163 }
2164
2165 ZOOM_API(ZOOM_scanset)
2166 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2167 {
2168     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2169
2170     scan->connection = c;
2171     scan->odr = odr_createmem (ODR_DECODE);
2172     scan->options = ZOOM_options_create_with_parent (c->options);
2173     scan->refcount = 1;
2174     scan->scan_response = 0;
2175
2176     if ((scan->termListAndStartPoint =
2177          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2178                       start)))
2179     {
2180         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2181         task->u.scan.scan = scan;
2182
2183         (scan->refcount)++;
2184         if (!c->async)
2185         {
2186             while (ZOOM_event (1, &c))
2187                 ;
2188         }
2189     }
2190     return scan;
2191 }
2192
2193 ZOOM_API(void)
2194 ZOOM_scanset_destroy (ZOOM_scanset scan)
2195 {
2196     if (!scan)
2197         return;
2198     (scan->refcount)--;
2199     if (scan->refcount == 0)
2200     {
2201         odr_destroy (scan->odr);
2202
2203         ZOOM_options_destroy (scan->options);
2204         xfree (scan);
2205     }
2206 }
2207
2208 static zoom_ret send_package (ZOOM_connection c)
2209 {
2210     ZOOM_Event event;
2211     if (!c->tasks)
2212         return zoom_complete;
2213     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2214
2215     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2216     ZOOM_connection_put_event (c, event);
2217
2218     return do_write_ex (c, c->tasks->u.package->buf_out,
2219                         c->tasks->u.package->len_out);
2220 }
2221
2222 static zoom_ret send_scan (ZOOM_connection c)
2223 {
2224     ZOOM_scanset scan;
2225     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2226     Z_ScanRequest *req = apdu->u.scanRequest;
2227     if (!c->tasks)
2228         return zoom_complete;
2229     assert (c->tasks->which == ZOOM_TASK_SCAN);
2230     scan = c->tasks->u.scan.scan;
2231
2232     req->termListAndStartPoint = scan->termListAndStartPoint;
2233     req->attributeSet = scan->attributeSet;
2234
2235     *req->numberOfTermsRequested =
2236         ZOOM_options_get_int(scan->options, "number", 10);
2237
2238     req->preferredPositionInResponse =
2239         odr_intdup (c->odr_out,
2240                     ZOOM_options_get_int(scan->options, "position", 1));
2241
2242     req->stepSize =
2243         odr_intdup (c->odr_out,
2244                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2245
2246     req->databaseNames = set_DatabaseNames (c, scan->options,
2247                                             &req->num_databaseNames);
2248
2249     return send_APDU (c, apdu);
2250 }
2251
2252 ZOOM_API(size_t)
2253 ZOOM_scanset_size (ZOOM_scanset scan)
2254 {
2255     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2256         return 0;
2257     return scan->scan_response->entries->num_entries;
2258 }
2259
2260 ZOOM_API(const char *)
2261 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2262                    int *occ, int *len)
2263 {
2264     const char *term = 0;
2265     size_t noent = ZOOM_scanset_size (scan);
2266     Z_ScanResponse *res = scan->scan_response;
2267
2268     *len = 0;
2269     *occ = 0;
2270     if (pos >= noent)
2271         return 0;
2272     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2273     {
2274         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2275
2276         if (t->term->which == Z_Term_general)
2277         {
2278             term = (const char *) t->term->u.general->buf;
2279             *len = t->term->u.general->len;
2280         }
2281         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2282     }
2283     return term;
2284 }
2285
2286 ZOOM_API(const char *)
2287 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2288                            int *occ, int *len)
2289 {
2290     const char *term = 0;
2291     size_t noent = ZOOM_scanset_size (scan);
2292     Z_ScanResponse *res = scan->scan_response;
2293
2294     *len = 0;
2295     *occ = 0;
2296     if (pos >= noent)
2297         return 0;
2298     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2299     {
2300         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2301
2302         if (t->displayTerm)
2303         {
2304             term = t->displayTerm;
2305             *len = strlen(term);
2306         }
2307         else if (t->term->which == Z_Term_general)
2308         {
2309             term = (const char *) t->term->u.general->buf;
2310             *len = t->term->u.general->len;
2311         }
2312         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2313     }
2314     return term;
2315 }
2316
2317 ZOOM_API(const char *)
2318 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2319 {
2320     return ZOOM_options_get (scan->options, key);
2321 }
2322
2323 ZOOM_API(void)
2324 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2325                               const char *val)
2326 {
2327     ZOOM_options_set (scan->options, key, val);
2328 }
2329
2330 static Z_APDU *create_es_package (ZOOM_package p, int type)
2331 {
2332     const char *str;
2333     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2334     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2335
2336     *req->function = Z_ExtendedServicesRequest_create;
2337
2338     str = ZOOM_options_get(p->options, "package-name");
2339     if (str && *str)
2340         req->packageName = nmem_strdup (p->odr_out->mem, str);
2341
2342     str = ZOOM_options_get(p->options, "user-id");
2343     if (str)
2344         req->userId = nmem_strdup (p->odr_out->mem, str);
2345
2346     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2347                                               type);
2348
2349     str = ZOOM_options_get(p->options, "function");
2350     if (str)
2351     {
2352         if (!strcmp (str, "create"))
2353             *req->function = 1;
2354         if (!strcmp (str, "delete"))
2355             *req->function = 2;
2356         if (!strcmp (str, "modify"))
2357             *req->function = 3;
2358     }
2359     return apdu;
2360 }
2361
2362 static const char *ill_array_lookup (void *clientData, const char *idx)
2363 {
2364     ZOOM_package p = (ZOOM_package) clientData;
2365     return ZOOM_options_get (p->options, idx+4);
2366 }
2367
2368 static Z_External *encode_ill_request (ZOOM_package p)
2369 {
2370     ODR out = p->odr_out;
2371     ILL_Request *req;
2372     Z_External *r = 0;
2373     struct ill_get_ctl ctl;
2374
2375     ctl.odr = p->odr_out;
2376     ctl.clientData = p;
2377     ctl.f = ill_array_lookup;
2378
2379     req = ill_get_ILLRequest(&ctl, "ill", 0);
2380
2381     if (!ill_Request (out, &req, 0, 0))
2382     {
2383         int ill_request_size;
2384         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2385         if (ill_request_buf)
2386             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2387         return 0;
2388     }
2389     else
2390     {
2391         oident oid;
2392         int illRequest_size = 0;
2393         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2394
2395         oid.proto = PROTO_GENERAL;
2396         oid.oclass = CLASS_GENERAL;
2397         oid.value = VAL_ISO_ILL_1;
2398
2399         r = (Z_External *) odr_malloc (out, sizeof(*r));
2400         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2401         r->indirect_reference = 0;
2402         r->descriptor = 0;
2403         r->which = Z_External_single;
2404
2405         r->u.single_ASN1_type = (Odr_oct *)
2406             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2407         r->u.single_ASN1_type->buf = (unsigned char*)
2408             odr_malloc (out, illRequest_size);
2409         r->u.single_ASN1_type->len = illRequest_size;
2410         r->u.single_ASN1_type->size = illRequest_size;
2411         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2412     }
2413     return r;
2414 }
2415
2416 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2417 {
2418     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2419     const char *str;
2420
2421     req->which=Z_IOItemOrder_esRequest;
2422     req->u.esRequest = (Z_IORequest *)
2423         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2424
2425     /* to keep part ... */
2426     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2427         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2428     req->u.esRequest->toKeep->supplDescription = 0;
2429     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2430         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2431
2432     str = ZOOM_options_get(p->options, "contact-name");
2433     req->u.esRequest->toKeep->contact->name = str ?
2434         nmem_strdup (p->odr_out->mem, str) : 0;
2435
2436     str = ZOOM_options_get(p->options, "contact-phone");
2437     req->u.esRequest->toKeep->contact->phone = str ?
2438         nmem_strdup (p->odr_out->mem, str) : 0;
2439
2440     str = ZOOM_options_get(p->options, "contact-email");
2441     req->u.esRequest->toKeep->contact->email = str ?
2442         nmem_strdup (p->odr_out->mem, str) : 0;
2443
2444     req->u.esRequest->toKeep->addlBilling = 0;
2445
2446     /* not to keep part ... */
2447     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2448         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2449
2450     str = ZOOM_options_get(p->options, "itemorder-setname");
2451     if (!str)
2452         str = "default";
2453
2454     if (!*str)
2455         req->u.esRequest->notToKeep->resultSetItem = 0;
2456     else
2457     {
2458         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2459            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2460
2461         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2462            nmem_strdup (p->odr_out->mem, str);
2463         req->u.esRequest->notToKeep->resultSetItem->item =
2464             (int *) odr_malloc(p->odr_out, sizeof(int));
2465
2466         str = ZOOM_options_get(p->options, "itemorder-item");
2467         *req->u.esRequest->notToKeep->resultSetItem->item =
2468             (str ? atoi(str) : 1);
2469     }
2470     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2471
2472     return req;
2473 }
2474
2475 Z_APDU *create_admin_package(ZOOM_package p, int type,
2476                              Z_ESAdminOriginPartToKeep **toKeepP,
2477                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2478 {
2479     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2480     if (apdu)
2481     {
2482         Z_ESAdminOriginPartToKeep  *toKeep;
2483         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2484         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2485         const char *first_db = "Default";
2486         int num_db;
2487         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2488         if (num_db > 0)
2489             first_db = db[0];
2490
2491         r->direct_reference =
2492             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2493                                    VAL_ADMINSERVICE);
2494         r->descriptor = 0;
2495         r->indirect_reference = 0;
2496         r->which = Z_External_ESAdmin;
2497
2498         r->u.adminService = (Z_Admin *)
2499             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2500         r->u.adminService->which = Z_Admin_esRequest;
2501         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2502             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2503
2504         toKeep = r->u.adminService->u.esRequest->toKeep =
2505             (Z_ESAdminOriginPartToKeep *)
2506             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2507         toKeep->which=type;
2508         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2509         toKeep->u.create=odr_nullval();
2510         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2511
2512         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2513             (Z_ESAdminOriginPartNotToKeep *)
2514             odr_malloc(p->odr_out,
2515                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2516         notToKeep->which=Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2517         notToKeep->u.recordsWillFollow=odr_nullval();
2518         if (toKeepP)
2519             *toKeepP = toKeep;
2520         if (notToKeepP)
2521             *notToKeepP = notToKeep;
2522     }
2523     return apdu;
2524 }
2525
2526 static Z_APDU *create_update_package(ZOOM_package p)
2527 {
2528     Z_APDU *apdu = 0;
2529     const char *first_db = "Default";
2530     int num_db;
2531     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2532     const char *action = ZOOM_options_get(p->options, "action");
2533     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2534     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2535     const char *record_buf = ZOOM_options_get(p->options, "record");
2536     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2537     int syntax_oid = VAL_NONE;
2538     int action_no = -1;
2539
2540     if (syntax_str)
2541         syntax_oid = oid_getvalbyname(syntax_str);
2542     if (!record_buf)
2543     {
2544         record_buf = "void";
2545         syntax_oid = VAL_SUTRS;
2546     }
2547     if (syntax_oid != VAL_NONE)
2548         syntax_oid = VAL_TEXT_XML;
2549
2550     if (num_db > 0)
2551         first_db = db[0];
2552
2553     if (!action)
2554         action = "specialUpdate";
2555
2556     if (!strcmp(action, "recordInsert"))
2557         action_no = Z_IUOriginPartToKeep_recordInsert;
2558     else if (!strcmp(action, "recordReplace"))
2559         action_no = Z_IUOriginPartToKeep_recordReplace;
2560     else if (!strcmp(action, "recordDelete"))
2561         action_no = Z_IUOriginPartToKeep_recordDelete;
2562     else if (!strcmp(action, "elementUpdate"))
2563         action_no = Z_IUOriginPartToKeep_elementUpdate;
2564     else if (!strcmp(action, "specialUpdate"))
2565         action_no = Z_IUOriginPartToKeep_specialUpdate;
2566     else
2567         return 0;
2568
2569     apdu = create_es_package (p, VAL_DBUPDATE);
2570     if (apdu)
2571     {
2572         Z_IUOriginPartToKeep *toKeep;
2573         Z_IUSuppliedRecords *notToKeep;
2574         Z_External *r = (Z_External *)
2575             odr_malloc (p->odr_out, sizeof(*r));
2576
2577         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2578
2579         r->direct_reference =
2580             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2581                                    VAL_DBUPDATE);
2582         r->descriptor = 0;
2583         r->which = Z_External_update;
2584         r->indirect_reference = 0;
2585         r->u.update = (Z_IUUpdate *)
2586             odr_malloc(p->odr_out, sizeof(*r->u.update));
2587
2588         r->u.update->which = Z_IUUpdate_esRequest;
2589         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2590             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2591         toKeep = r->u.update->u.esRequest->toKeep =
2592             (Z_IUOriginPartToKeep *)
2593             odr_malloc(p->odr_out, sizeof(*toKeep));
2594
2595         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2596         toKeep->schema = 0;
2597         toKeep->elementSetName = 0;
2598         toKeep->actionQualifier = 0;
2599         toKeep->action = odr_intdup(p->odr_out, action_no);
2600
2601         notToKeep = r->u.update->u.esRequest->notToKeep =
2602             (Z_IUSuppliedRecords *)
2603             odr_malloc(p->odr_out, sizeof(*notToKeep));
2604         notToKeep->num = 1;
2605         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2606             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2607         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2608             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2609         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2610         if (recordIdOpaque)
2611         {
2612             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2613                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2614             notToKeep->elements[0]->u.opaque->size =
2615                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2616             notToKeep->elements[0]->u.opaque->buf =
2617                 odr_strdup(p->odr_out, recordIdOpaque);
2618         }
2619         else if (recordIdNumber)
2620         {
2621             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2622
2623             notToKeep->elements[0]->u.number =
2624                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2625         }
2626         else
2627             notToKeep->elements[0]->u.opaque = 0;
2628         notToKeep->elements[0]->supplementalId = 0;
2629         notToKeep->elements[0]->correlationInfo = 0;
2630         notToKeep->elements[0]->record =
2631             z_ext_record(p->odr_out, syntax_oid,
2632                          record_buf, strlen(record_buf));
2633     }
2634     if (0 && apdu)
2635     {
2636        ODR print = odr_createmem(ODR_PRINT);
2637
2638        z_APDU(print, &apdu, 0, 0);
2639        odr_destroy(print);
2640     }
2641     return apdu;
2642 }
2643
2644 ZOOM_API(void)
2645     ZOOM_package_send (ZOOM_package p, const char *type)
2646 {
2647     Z_APDU *apdu = 0;
2648     ZOOM_connection c;
2649     if (!p)
2650         return;
2651     c = p->connection;
2652     odr_reset (p->odr_out);
2653     xfree (p->buf_out);
2654     p->buf_out = 0;
2655     if (!strcmp(type, "itemorder"))
2656     {
2657         apdu = create_es_package (p, VAL_ITEMORDER);
2658         if (apdu)
2659         {
2660             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2661
2662             r->direct_reference =
2663                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2664                                        VAL_ITEMORDER);
2665             r->descriptor = 0;
2666             r->which = Z_External_itemOrder;
2667             r->indirect_reference = 0;
2668             r->u.itemOrder = encode_item_order (p);
2669
2670             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2671         }
2672     }
2673     else if (!strcmp(type, "create"))  /* create database */
2674     {
2675         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2676                                     0, 0);
2677     }
2678     else if (!strcmp(type, "drop"))  /* drop database */
2679     {
2680         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2681                                     0, 0);
2682     }
2683     else if (!strcmp(type, "commit"))  /* commit changes */
2684     {
2685         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
2686                                     0, 0);
2687     }
2688     else if (!strcmp(type, "update")) /* update record(s) */
2689     {
2690         apdu = create_update_package(p);
2691     }
2692     if (apdu)
2693     {
2694         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2695         {
2696             char *buf;
2697
2698             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2699             task->u.package = p;
2700             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2701             p->buf_out = (char *) xmalloc (p->len_out);
2702             memcpy (p->buf_out, buf, p->len_out);
2703
2704             (p->refcount)++;
2705             if (!c->async)
2706             {
2707                 while (ZOOM_event (1, &c))
2708                     ;
2709             }
2710         }
2711     }
2712 }
2713
2714 ZOOM_API(ZOOM_package)
2715     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2716 {
2717     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2718
2719     p->connection = c;
2720     p->odr_out = odr_createmem (ODR_ENCODE);
2721     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2722     p->refcount = 1;
2723     p->buf_out = 0;
2724     p->len_out = 0;
2725     return p;
2726 }
2727
2728 ZOOM_API(void)
2729     ZOOM_package_destroy(ZOOM_package p)
2730 {
2731     if (!p)
2732         return;
2733     (p->refcount)--;
2734     if (p->refcount == 0)
2735     {
2736         odr_destroy (p->odr_out);
2737         xfree (p->buf_out);
2738
2739         ZOOM_options_destroy (p->options);
2740         xfree (p);
2741     }
2742 }
2743
2744 ZOOM_API(const char *)
2745 ZOOM_package_option_get (ZOOM_package p, const char *key)
2746 {
2747     return ZOOM_options_get (p->options, key);
2748 }
2749
2750
2751 ZOOM_API(void)
2752 ZOOM_package_option_set (ZOOM_package p, const char *key,
2753                               const char *val)
2754 {
2755     ZOOM_options_set (p->options, key, val);
2756 }
2757
2758 static int ZOOM_connection_exec_task (ZOOM_connection c)
2759 {
2760     ZOOM_task task = c->tasks;
2761     zoom_ret ret = zoom_complete;
2762
2763     if (!task)
2764     {
2765         yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task task=<null>");
2766         return 0;
2767     }
2768     yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task type=%d run=%d",
2769              task->which, task->running);
2770     if (c->error != ZOOM_ERROR_NONE)
2771     {
2772         yaz_log (LOG_DEBUG, "remove tasks because of error = %d", c->error);
2773         ZOOM_connection_remove_tasks (c);
2774         return 0;
2775     }
2776     if (task->running)
2777     {
2778         yaz_log (LOG_DEBUG, "task already running");
2779         return 0;
2780     }
2781     task->running = 1;
2782     ret = zoom_complete;
2783     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2784     {
2785         switch (task->which)
2786         {
2787         case ZOOM_TASK_SEARCH:
2788             if (c->proto == PROTO_HTTP)
2789                 ret = ZOOM_connection_srw_send_search(c);
2790             else
2791                 ret = ZOOM_connection_send_search(c);
2792             break;
2793         case ZOOM_TASK_RETRIEVE:
2794             if (c->proto == PROTO_HTTP)
2795                 ret = ZOOM_connection_srw_send_search(c);
2796             else
2797                 ret = send_present (c);
2798             break;
2799         case ZOOM_TASK_CONNECT:
2800             ret = do_connect(c);
2801             break;
2802         case ZOOM_TASK_SCAN:
2803             ret = send_scan(c);
2804             break;
2805         case ZOOM_TASK_PACKAGE:
2806             ret = send_package(c);
2807             break;
2808         case ZOOM_TASK_SORT:
2809             c->tasks->u.sort.resultset->r_sort_spec =
2810                 c->tasks->u.sort.q->sort_spec;
2811             ret = send_sort(c, c->tasks->u.sort.resultset);
2812             break;
2813         }
2814     }
2815     else
2816     {
2817         yaz_log (LOG_DEBUG, "remove tasks because no connection exist");
2818         ZOOM_connection_remove_tasks (c);
2819     }
2820     if (ret == zoom_complete)
2821     {
2822         yaz_log (LOG_DEBUG, "task removed (complete)");
2823         ZOOM_connection_remove_task (c);
2824         return 0;
2825     }
2826     yaz_log (LOG_DEBUG, "task pending");
2827     return 1;
2828 }
2829
2830 static zoom_ret send_sort_present (ZOOM_connection c)
2831 {
2832     zoom_ret r = zoom_complete;
2833
2834     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
2835         r = send_sort (c, c->tasks->u.search.resultset);
2836     if (r == zoom_complete)
2837         r = send_present (c);
2838     return r;
2839 }
2840
2841 static int es_response (ZOOM_connection c,
2842                         Z_ExtendedServicesResponse *res)
2843 {
2844     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2845         return 0;
2846     if (res->diagnostics && res->num_diagnostics > 0)
2847         response_diag(c, res->diagnostics[0]);
2848     if (res->taskPackage &&
2849         res->taskPackage->which == Z_External_extendedService)
2850     {
2851         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2852         Odr_oct *id = taskPackage->targetReference;
2853
2854         if (id)
2855             ZOOM_options_setl (c->tasks->u.package->options,
2856                                "targetReference", (char*) id->buf, id->len);
2857     }
2858     return 1;
2859 }
2860
2861
2862 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2863 {
2864     Z_InitResponse *initrs;
2865
2866     c->mask = 0;
2867     yaz_log (LOG_DEBUG, "recv APDU type=%d", apdu->which);
2868     switch(apdu->which)
2869     {
2870     case Z_APDU_initResponse:
2871         initrs = apdu->u.initResponse;
2872         ZOOM_connection_option_set(c, "serverImplementationId",
2873                                    initrs->implementationId ?
2874                                    initrs->implementationId : "");
2875         ZOOM_connection_option_set(c, "serverImplementationName",
2876                                    initrs->implementationName ?
2877                                    initrs->implementationName : "");
2878         ZOOM_connection_option_set(c, "serverImplementationVersion",
2879                                    initrs->implementationVersion ?
2880                                    initrs->implementationVersion : "");
2881         /* Set the three old options too, for old applications */
2882         ZOOM_connection_option_set(c, "targetImplementationId",
2883                                    initrs->implementationId ?
2884                                    initrs->implementationId : "");
2885         ZOOM_connection_option_set(c, "targetImplementationName",
2886                                    initrs->implementationName ?
2887                                    initrs->implementationName : "");
2888         ZOOM_connection_option_set(c, "targetImplementationVersion",
2889                                    initrs->implementationVersion ?
2890                                    initrs->implementationVersion : "");
2891         if (!*initrs->result)
2892         {
2893             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0);
2894         }
2895         else
2896         {
2897             char *cookie =
2898                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2899                                           VAL_COOKIE, 1, 0);
2900             xfree (c->cookie_in);
2901             c->cookie_in = 0;
2902             if (cookie)
2903                 c->cookie_in = xstrdup(cookie);
2904             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2905                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2906                 c->support_named_resultsets = 1;
2907             if (c->tasks)
2908             {
2909                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2910                 ZOOM_connection_remove_task (c);
2911             }
2912             ZOOM_connection_exec_task (c);
2913         }
2914         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2915         {
2916             NMEM tmpmem = nmem_create();
2917             Z_CharSetandLanguageNegotiation *p =
2918                 yaz_get_charneg_record(initrs->otherInfo);
2919
2920             if (p)
2921             {
2922                 char *charset=NULL, *lang=NULL;
2923                 int sel;
2924
2925                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2926                 yaz_log(LOG_DEBUG, "Target accepted: charset %s, "
2927                         "language %s, select %d",
2928                         charset ? charset : "none", lang ? lang : "none", sel);
2929                 if (charset)
2930                     ZOOM_connection_option_set (c, "negotiation-charset",
2931                                                 charset);
2932                 if (lang)
2933                     ZOOM_connection_option_set (c, "negotiation-lang",
2934                                                 lang);
2935                 nmem_destroy(tmpmem);
2936             }
2937         }
2938         break;
2939     case Z_APDU_searchResponse:
2940         handle_search_response (c, apdu->u.searchResponse);
2941         if (send_sort_present (c) == zoom_complete)
2942             ZOOM_connection_remove_task (c);
2943         break;
2944     case Z_APDU_presentResponse:
2945         handle_present_response (c, apdu->u.presentResponse);
2946         if (send_present (c) == zoom_complete)
2947             ZOOM_connection_remove_task (c);
2948         break;
2949     case Z_APDU_sortResponse:
2950         sort_response (c, apdu->u.sortResponse);
2951         if (send_present (c) == zoom_complete)
2952             ZOOM_connection_remove_task (c);
2953         break;
2954     case Z_APDU_scanResponse:
2955         scan_response (c, apdu->u.scanResponse);
2956         ZOOM_connection_remove_task (c);
2957         break;
2958     case Z_APDU_extendedServicesResponse:
2959         es_response (c, apdu->u.extendedServicesResponse);
2960         ZOOM_connection_remove_task (c);
2961         break;
2962     case Z_APDU_close:
2963         if (c->reconnect_ok)
2964         {
2965             do_close(c);
2966             c->tasks->running = 0;
2967             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2968         }
2969         else
2970         {
2971             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2972             do_close(c);
2973         }
2974         break;
2975     default:
2976         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2977         do_close(c);
2978     }
2979 }
2980
2981 #if HAVE_XML2
2982 static void handle_srw_response(ZOOM_connection c,
2983                                 Z_SRW_searchRetrieveResponse *res)
2984 {
2985     ZOOM_resultset resultset = 0;
2986     int i;
2987     NMEM nmem;
2988     ZOOM_Event event;
2989
2990     if (!c->tasks)
2991         return;
2992
2993     if (c->tasks->which == ZOOM_TASK_SEARCH)
2994         resultset = c->tasks->u.search.resultset;
2995     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
2996         resultset = c->tasks->u.retrieve.resultset;
2997     else
2998         return ;
2999
3000     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3001     ZOOM_connection_put_event(c, event);
3002
3003     resultset->size = 0;
3004
3005     yaz_log(LOG_DEBUG, "got SRW response OK");
3006
3007     if (res->numberOfRecords)
3008         resultset->size = *res->numberOfRecords;
3009
3010     for (i = 0; i<res->num_records; i++)
3011     {
3012         int pos;
3013
3014         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3015             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3016
3017         if (res->records[i].recordPosition &&
3018             *res->records[i].recordPosition > 0)
3019             pos = *res->records[i].recordPosition - 1;
3020         else
3021             pos = resultset->start + i;
3022
3023         npr->databaseName = 0;
3024         npr->which = Z_NamePlusRecord_databaseRecord;
3025         npr->u.databaseRecord = (Z_External *)
3026             odr_malloc(c->odr_in, sizeof(Z_External));
3027         npr->u.databaseRecord->descriptor = 0;
3028         npr->u.databaseRecord->direct_reference =
3029             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3030         npr->u.databaseRecord->which = Z_External_octet;
3031         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3032             odr_malloc(c->odr_in, sizeof(Odr_oct));
3033         npr->u.databaseRecord->u.octet_aligned->buf =
3034             res->records[i].recordData_buf;
3035         npr->u.databaseRecord->u.octet_aligned->len =
3036             npr->u.databaseRecord->u.octet_aligned->size =
3037             res->records[i].recordData_len;
3038         record_cache_add (resultset, npr, pos);
3039     }
3040     if (res->num_diagnostics > 0)
3041     {
3042         const char *uri = res->diagnostics[0].uri;
3043         if (uri)
3044         {
3045             int code = 0;
3046             const char *cp;
3047             if ((cp = strrchr(uri, '/')))
3048                 code = atoi(cp+1);
3049             set_dset_error(c, code, uri,
3050                            res->diagnostics[0].details, 0);
3051         }
3052     }
3053     nmem = odr_extract_mem(c->odr_in);
3054     nmem_transfer(resultset->odr->mem, nmem);
3055     nmem_destroy(nmem);
3056 }
3057 #endif
3058
3059 #if HAVE_XML2
3060 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3061 {
3062     int ret = -1;
3063     const char *content_type = z_HTTP_header_lookup(hres->headers,
3064                                                     "Content-Type");
3065     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3066                                                        "Connection");
3067     c->mask = 0;
3068     yaz_log (LOG_DEBUG, "handle_http");
3069
3070     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3071     {
3072         Z_SOAP *soap_package = 0;
3073         ODR o = c->odr_in;
3074         Z_SOAP_Handler soap_handlers[2] = {
3075             {"http://www.loc.gov/zing/srw/", 0,
3076              (Z_SOAP_fun) yaz_srw_codec},
3077             {0, 0, 0}
3078         };
3079         ret = z_soap_codec(o, &soap_package,
3080                            &hres->content_buf, &hres->content_len,
3081                            soap_handlers);
3082         if (!ret && soap_package->which == Z_SOAP_generic &&
3083             soap_package->u.generic->no == 0)
3084         {
3085             Z_SRW_PDU *sr = soap_package->u.generic->p;
3086             if (sr->which == Z_SRW_searchRetrieve_response)
3087                 handle_srw_response(c, sr->u.response);
3088             else
3089                 ret = -1;
3090         }
3091         else if (!ret && (soap_package->which == Z_SOAP_fault
3092                           || soap_package->which == Z_SOAP_error))
3093         {
3094             set_HTTP_error(c, hres->code,
3095                            soap_package->u.fault->fault_code,
3096                            soap_package->u.fault->fault_string);
3097         }
3098         else
3099             ret = -1;
3100     }
3101     if (ret)
3102     {
3103         if (hres->code != 200)
3104             set_HTTP_error(c, hres->code, 0, 0);
3105         else
3106             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3107         do_close (c);
3108     }
3109     ZOOM_connection_remove_task(c);
3110     if (!strcmp(hres->version, "1.0"))
3111     {
3112         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3113         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3114             do_close(c);
3115     }
3116     else
3117     {
3118         /* HTTP 1.1: only if no close we stay alive .. */
3119         if (connection_head && !strcmp(connection_head, "close"))
3120             do_close(c);
3121     }
3122 }
3123 #endif
3124
3125 static int do_read (ZOOM_connection c)
3126 {
3127     int r, more;
3128     ZOOM_Event event;
3129
3130     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3131     ZOOM_connection_put_event (c, event);
3132
3133     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3134     more = cs_more(c->cs);
3135     yaz_log (LOG_DEBUG, "do_read len=%d more=%d", r, more);
3136     if (r == 1)
3137         return 0;
3138     if (r <= 0)
3139     {
3140         if (c->reconnect_ok)
3141         {
3142             do_close (c);
3143             c->reconnect_ok = 0;
3144             yaz_log (LOG_DEBUG, "reconnect read");
3145             c->tasks->running = 0;
3146             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3147         }
3148         else
3149         {
3150             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3151             do_close (c);
3152         }
3153     }
3154     else
3155     {
3156         Z_GDU *gdu;
3157         ZOOM_Event event;
3158
3159         odr_reset (c->odr_in);
3160         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3161         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3162         ZOOM_connection_put_event (c, event);
3163
3164         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3165         {
3166             int x;
3167             int err = odr_geterrorx(c->odr_in, &x);
3168             char msg[60];
3169             const char *element = odr_getelement(c->odr_in);
3170             sprintf (msg, "ODR code %d:%d element=%-20s",
3171                      err, x, element ? element : "<unknown>");
3172             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3173             do_close (c);
3174         }
3175         else if (gdu->which == Z_GDU_Z3950)
3176             handle_apdu (c, gdu->u.z3950);
3177         else if (gdu->which == Z_GDU_HTTP_Response)
3178         {
3179 #if HAVE_XML2
3180             handle_http (c, gdu->u.HTTP_Response);
3181 #else
3182             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3183             do_close (c);
3184 #endif
3185         }
3186         c->reconnect_ok = 0;
3187     }
3188     return 1;
3189 }
3190
3191 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3192 {
3193     int r;
3194     ZOOM_Event event;
3195
3196     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3197     ZOOM_connection_put_event (c, event);
3198
3199     yaz_log (LOG_DEBUG, "do_write_ex len=%d", len_out);
3200     if ((r=cs_put (c->cs, buf_out, len_out)) < 0)
3201     {
3202         if (c->reconnect_ok)
3203         {
3204             do_close (c);
3205             c->reconnect_ok = 0;
3206             yaz_log (LOG_DEBUG, "reconnect write");
3207             c->tasks->running = 0;
3208             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3209             return zoom_pending;
3210         }
3211         if (c->state == STATE_CONNECTING)
3212             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3213         else
3214             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3215         do_close (c);
3216         return zoom_complete;
3217     }
3218     else if (r == 1)
3219     {
3220         c->mask = ZOOM_SELECT_EXCEPT;
3221         if (c->cs->io_pending & CS_WANT_WRITE)
3222             c->mask += ZOOM_SELECT_WRITE;
3223         if (c->cs->io_pending & CS_WANT_READ)
3224             c->mask += ZOOM_SELECT_READ;
3225         yaz_log (LOG_DEBUG, "do_write_ex 1 mask=%d", c->mask);
3226     }
3227     else
3228     {
3229         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3230         yaz_log (LOG_DEBUG, "do_write_ex 2 mask=%d", c->mask);
3231     }
3232     return zoom_pending;
3233 }
3234
3235 static zoom_ret do_write(ZOOM_connection c)
3236 {
3237     return do_write_ex (c, c->buf_out, c->len_out);
3238 }
3239
3240
3241 ZOOM_API(const char *)
3242 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3243 {
3244     return ZOOM_options_get (c->options, key);
3245 }
3246
3247 ZOOM_API(void)
3248 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3249                             const char *val)
3250 {
3251     ZOOM_options_set (c->options, key, val);
3252 }
3253
3254 ZOOM_API(void)
3255 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3256                              const char *val, int len)
3257 {
3258     ZOOM_options_setl (c->options, key, val, len);
3259 }
3260
3261 ZOOM_API(const char *)
3262 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3263 {
3264     return ZOOM_options_get (r->options, key);
3265 }
3266
3267 ZOOM_API(void)
3268 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3269                                   const char *val)
3270 {
3271     ZOOM_options_set (r->options, key, val);
3272 }
3273
3274
3275 ZOOM_API(int)
3276 ZOOM_connection_errcode (ZOOM_connection c)
3277 {
3278     return ZOOM_connection_error (c, 0, 0);
3279 }
3280
3281 ZOOM_API(const char *)
3282 ZOOM_connection_errmsg (ZOOM_connection c)
3283 {
3284     const char *msg;
3285     ZOOM_connection_error (c, &msg, 0);
3286     return msg;
3287 }
3288
3289 ZOOM_API(const char *)
3290 ZOOM_connection_addinfo (ZOOM_connection c)
3291 {
3292     const char *addinfo;
3293     ZOOM_connection_error (c, 0, &addinfo);
3294     return addinfo;
3295 }
3296
3297 ZOOM_API(const char *)
3298 ZOOM_diag_str (int error)
3299 {
3300     switch (error)
3301     {
3302     case ZOOM_ERROR_NONE:
3303         return "No error";
3304     case ZOOM_ERROR_CONNECT:
3305         return "Connect failed";
3306     case ZOOM_ERROR_MEMORY:
3307         return "Out of memory";
3308     case ZOOM_ERROR_ENCODE:
3309         return "Encoding failed";
3310     case ZOOM_ERROR_DECODE:
3311         return "Decoding failed";
3312     case ZOOM_ERROR_CONNECTION_LOST:
3313         return "Connection lost";
3314     case ZOOM_ERROR_INIT:
3315         return "Init rejected";
3316     case ZOOM_ERROR_INTERNAL:
3317         return "Internal failure";
3318     case ZOOM_ERROR_TIMEOUT:
3319         return "Timeout";
3320     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3321         return "Unsupported protocol";
3322     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3323         return "Unsupported query type";
3324     case ZOOM_ERROR_INVALID_QUERY:
3325         return "Invalid query";
3326     default:
3327         return diagbib1_str (error);
3328     }
3329 }
3330
3331 ZOOM_API(int)
3332 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3333                          const char **addinfo, const char **diagset)
3334 {
3335     int error = c->error;
3336     if (cp)
3337     {
3338         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3339             *cp = ZOOM_diag_str(error);
3340         else if (!strcmp(c->diagset, "HTTP"))
3341             *cp = z_HTTP_errmsg(c->error);
3342         else if (!strcmp(c->diagset, "Bib-1"))
3343             *cp = ZOOM_diag_str(error);
3344         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3345             *cp = yaz_diag_srw_str(c->error);
3346         else
3347             *cp = "Unknown error and diagnostic set";
3348     }
3349     if (addinfo)
3350         *addinfo = c->addinfo ? c->addinfo : "";
3351     if (diagset)
3352         *diagset = c->diagset ? c->diagset : "";
3353     return c->error;
3354 }
3355
3356 ZOOM_API(int)
3357 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3358                        const char **addinfo)
3359 {
3360     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3361 }
3362
3363 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3364 {
3365     ZOOM_Event event = 0;
3366     int r = cs_look(c->cs);
3367     yaz_log (LOG_DEBUG, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
3368              c, mask, r);
3369
3370     if (r == CS_NONE)
3371     {
3372         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3373         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3374         do_close (c);
3375         ZOOM_connection_put_event (c, event);
3376     }
3377     else if (r == CS_CONNECT)
3378     {
3379         int ret;
3380         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3381
3382         ret = cs_rcvconnect (c->cs);
3383         yaz_log (LOG_DEBUG, "cs_rcvconnect returned %d", ret);
3384         if (ret == 1)
3385         {
3386             c->mask = ZOOM_SELECT_EXCEPT;
3387             if (c->cs->io_pending & CS_WANT_WRITE)
3388                 c->mask += ZOOM_SELECT_WRITE;
3389             if (c->cs->io_pending & CS_WANT_READ)
3390                 c->mask += ZOOM_SELECT_READ;
3391             ZOOM_connection_put_event (c, event);
3392         }
3393         else if (ret == 0)
3394         {
3395             ZOOM_connection_put_event (c, event);
3396             get_cert(c);
3397             if (c->proto == PROTO_Z3950)
3398                 ZOOM_connection_send_init(c);
3399             else
3400             {
3401                 /* no init request for SRW .. */
3402                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3403                 ZOOM_connection_remove_task (c);
3404                 c->mask = 0;
3405                 ZOOM_connection_exec_task (c);
3406             }
3407             c->state = STATE_ESTABLISHED;
3408         }
3409         else
3410         {
3411             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3412             do_close (c);
3413             ZOOM_connection_put_event (c, event);
3414         }
3415     }
3416     else
3417     {
3418         if (mask & ZOOM_SELECT_READ)
3419             do_read (c);
3420         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3421             do_write (c);
3422     }
3423     return 1;
3424 }
3425
3426 ZOOM_API(int)
3427 ZOOM_connection_last_event(ZOOM_connection cs)
3428 {
3429     if (!cs)
3430         return ZOOM_EVENT_NONE;
3431     return cs->last_event;
3432 }
3433
3434 ZOOM_API(int)
3435 ZOOM_event (int no, ZOOM_connection *cs)
3436 {
3437     int timeout = 5000;
3438 #if HAVE_SYS_POLL_H
3439     struct pollfd pollfds[1024];
3440     ZOOM_connection poll_cs[1024];
3441 #else
3442     struct timeval tv;
3443     fd_set input, output, except;
3444 #endif
3445     int i, r, nfds;
3446     int max_fd = 0;
3447
3448     for (i = 0; i<no; i++)
3449     {
3450         ZOOM_connection c = cs[i];
3451         ZOOM_Event event;
3452         if (c && (event = ZOOM_connection_get_event(c)))
3453         {
3454             ZOOM_Event_destroy (event);
3455             return i+1;
3456         }
3457     }
3458     for (i = 0; i<no; i++)
3459     {
3460         ZOOM_connection c = cs[i];
3461         ZOOM_Event event;
3462         if (c && ZOOM_connection_exec_task (c))
3463         {
3464             if ((event = ZOOM_connection_get_event(c)))
3465             {
3466                 ZOOM_Event_destroy (event);
3467                 return i+1;
3468             }
3469         }
3470     }
3471 #if HAVE_SYS_POLL_H
3472
3473 #else
3474     FD_ZERO (&input);
3475     FD_ZERO (&output);
3476     FD_ZERO (&except);
3477 #endif
3478     nfds = 0;
3479     for (i = 0; i<no; i++)
3480     {
3481         ZOOM_connection c = cs[i];
3482         int fd, mask;
3483         int this_timeout;
3484
3485         if (!c)
3486             continue;
3487         fd = z3950_connection_socket(c);
3488         mask = z3950_connection_mask(c);
3489
3490         if (fd == -1)
3491             continue;
3492         if (max_fd < fd)
3493             max_fd = fd;
3494
3495         this_timeout = ZOOM_options_get_int (c->options, "timeout", -1);
3496         if (this_timeout != -1 && this_timeout < timeout)
3497             timeout = this_timeout;
3498 #if HAVE_SYS_POLL_H
3499         if (mask)
3500         {
3501             short poll_events = 0;
3502
3503             if (mask & ZOOM_SELECT_READ)
3504                 poll_events += POLLIN;
3505             if (mask & ZOOM_SELECT_WRITE)
3506                 poll_events += POLLOUT;
3507             if (mask & ZOOM_SELECT_EXCEPT)
3508                 poll_events += POLLERR;
3509             pollfds[nfds].fd = fd;
3510             pollfds[nfds].events = poll_events;
3511             pollfds[nfds].revents = 0;
3512             poll_cs[nfds] = c;
3513             nfds++;
3514         }
3515 #else
3516         if (mask & ZOOM_SELECT_READ)
3517         {
3518             FD_SET (fd, &input);
3519             nfds++;
3520         }
3521         if (mask & ZOOM_SELECT_WRITE)
3522         {
3523             FD_SET (fd, &output);
3524             nfds++;
3525         }
3526         if (mask & ZOOM_SELECT_EXCEPT)
3527         {
3528             FD_SET (fd, &except);
3529             nfds++;
3530         }
3531 #endif
3532     }
3533     if (timeout >= 5000)
3534         timeout = 30;
3535
3536     if (!nfds)
3537         return 0;
3538
3539 #if HAVE_SYS_POLL_H
3540     r = poll (pollfds, nfds, timeout * 1000);
3541     for (i = 0; i<nfds; i++)
3542     {
3543         ZOOM_connection c = poll_cs[i];
3544         if (r && c->mask)
3545         {
3546             int mask = 0;
3547             if (pollfds[i].revents & POLLIN)
3548                 mask += ZOOM_SELECT_READ;
3549             if (pollfds[i].revents & POLLOUT)
3550                 mask += ZOOM_SELECT_WRITE;
3551             if (pollfds[i].revents & POLLERR)
3552                 mask += ZOOM_SELECT_EXCEPT;
3553             if (mask)
3554                 ZOOM_connection_do_io(c, mask);
3555         }
3556         else if (r == 0 && c->mask)
3557         {
3558             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3559             /* timeout and this connection was waiting */
3560             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3561             do_close (c);
3562             ZOOM_connection_put_event(c, event);
3563         }
3564     }
3565 #else
3566     tv.tv_sec = timeout;
3567     tv.tv_usec = 0;
3568     yaz_log (LOG_DEBUG, "select start");
3569     r = select (max_fd+1, &input, &output, &except, &tv);
3570     yaz_log (LOG_DEBUG, "select stop, returned r=%d", r);
3571     for (i = 0; i<no; i++)
3572     {
3573         ZOOM_connection c = cs[i];
3574         int fd, mask;
3575
3576         if (!c)
3577             continue;
3578         fd = z3950_connection_socket(c);
3579         mask = 0;
3580         if (r && c->mask)
3581         {
3582             /* no timeout and real socket */
3583             if (FD_ISSET(fd, &input))
3584                 mask += ZOOM_SELECT_READ;
3585             if (FD_ISSET(fd, &output))
3586                 mask += ZOOM_SELECT_WRITE;
3587             if (FD_ISSET(fd, &except))
3588                 mask += ZOOM_SELECT_EXCEPT;
3589             if (mask)
3590                 ZOOM_connection_do_io(c, mask);
3591         }
3592         if (r == 0 && c->mask)
3593         {
3594             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3595             /* timeout and this connection was waiting */
3596             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3597             do_close (c);
3598             yaz_log (LOG_DEBUG, "timeout");
3599             ZOOM_connection_put_event(c, event);
3600         }
3601     }
3602 #endif
3603     for (i = 0; i<no; i++)
3604     {
3605         ZOOM_connection c = cs[i];
3606         ZOOM_Event event;
3607         if (c && (event = ZOOM_connection_get_event(c)))
3608         {
3609             ZOOM_Event_destroy (event);
3610             return i+1;
3611         }
3612     }
3613     return 0;
3614 }