zutil/zoom-c.c

   1 /*
   2  * Copyright (c) 2000-2003, Index Data
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.35 2003-05-20 08:22:33 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     xfree (c->addinfo);
  94     c->addinfo = 0;
  95     c->error = error;
  96     c->diagset = dset;
  97     if (addinfo && addinfo2)
  98     {
  99         c->addinfo = xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 100         strcpy(c->addinfo, addinfo);
 101         strcat(c->addinfo, addinfo2);
 102     }
 103     else if (addinfo)
 104         c->addinfo = xstrdup(addinfo);
 105     if (error)
 106         yaz_log(LOG_DEBUG, "Error %s %s:%d %s %s",
 107                 c->host_port ? c->host_port : "<>", dset, error,
 108                 addinfo ? addinfo : "",
 109                 addinfo2 ? addinfo2 : "");
 110 }
 111
 112 #if HAVE_XML2
 113 static void set_HTTP_error (ZOOM_connection c, int error,
 114                             const char *addinfo, const char *addinfo2)
 115 {
 116     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 117 }
 118 #endif
 119
 120 static void set_ZOOM_error (ZOOM_connection c, int error,
 121                             const char *addinfo)
 122 {
 123     set_dset_error(c, error, "ZOOM", addinfo, 0);
 124 }
 125
 126 static void clear_error (ZOOM_connection c)
 127 {
 128
 129     switch (c->error)
 130     {
 131     case ZOOM_ERROR_CONNECT:
 132     case ZOOM_ERROR_MEMORY:
 133     case ZOOM_ERROR_DECODE:
 134     case ZOOM_ERROR_CONNECTION_LOST:
 135     case ZOOM_ERROR_INIT:
 136     case ZOOM_ERROR_INTERNAL:
 137     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 138         break;
 139     default:
 140         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 141     }
 142 }
 143
 144 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 145 {
 146     ZOOM_task *taskp = &c->tasks;
 147     while (*taskp)
 148         taskp = &(*taskp)->next;
 149     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 150     (*taskp)->running = 0;
 151     (*taskp)->which = which;
 152     (*taskp)->next = 0;
 153     clear_error (c);
 154     return *taskp;
 155 }
 156
 157 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 158 {
 159     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 160
 161     task->next = c->tasks;
 162     c->tasks = task;
 163
 164     task->running = 0;
 165     task->which = which;
 166     clear_error (c);
 167     return task;
 168 }
 169
 170 void ZOOM_connection_remove_task (ZOOM_connection c)
 171 {
 172     ZOOM_task task = c->tasks;
 173
 174     if (task)
 175     {
 176         c->tasks = task->next;
 177         switch (task->which)
 178         {
 179         case ZOOM_TASK_SEARCH:
 180
 181             ZOOM_resultset_destroy (task->u.search.resultset);
 182             break;
 183         case ZOOM_TASK_RETRIEVE:
 184             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 185             break;
 186         case ZOOM_TASK_CONNECT:
 187             break;
 188         case ZOOM_TASK_SCAN:
 189             ZOOM_scanset_destroy (task->u.scan.scan);
 190             break;
 191         case ZOOM_TASK_PACKAGE:
 192             ZOOM_package_destroy (task->u.package);
 193             break;
 194         default:
 195             assert (0);
 196         }
 197         xfree (task);
 198     }
 199 }
 200
 201 static int ZOOM_connection_exec_task (ZOOM_connection c);
 202
 203 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 204 {
 205     while (c->tasks)
 206         ZOOM_connection_remove_task(c);
 207 }
 208
 209 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 210
 211 ZOOM_API(ZOOM_connection)
 212 ZOOM_connection_create (ZOOM_options options)
 213 {
 214     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 215
 216     c->proto = PROTO_Z3950;
 217     c->cs = 0;
 218     c->mask = 0;
 219     c->reconnect_ok = 0;
 220     c->state = STATE_IDLE;
 221     c->addinfo = 0;
 222     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 223     c->buf_in = 0;
 224     c->len_in = 0;
 225     c->buf_out = 0;
 226     c->len_out = 0;
 227     c->resultsets = 0;
 228
 229     c->options = ZOOM_options_create_with_parent(options);
 230
 231     c->host_port = 0;
 232     c->path = 0;
 233     c->proxy = 0;
 234
 235     c->charset = c->lang = 0;
 236
 237     c->cookie_out = 0;
 238     c->cookie_in = 0;
 239     c->client_IP = 0;
 240     c->tasks = 0;
 241
 242     c->odr_in = odr_createmem (ODR_DECODE);
 243     c->odr_out = odr_createmem (ODR_ENCODE);
 244
 245     c->async = 0;
 246     c->support_named_resultsets = 0;
 247     c->last_event = ZOOM_EVENT_NONE;
 248
 249     c->m_queue_front = 0;
 250     c->m_queue_back = 0;
 251     return c;
 252 }
 253
 254 /* set database names. Take local databases (if set); otherwise
 255    take databases given in ZURL (if set); otherwise use Default */
 256 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 257                                  int *num)
 258 {
 259     char **databaseNames;
 260     const char *c;
 261     int no = 2;
 262     const char *cp = ZOOM_options_get (options, "databaseName");
 263
 264     if (!cp || !*cp)
 265     {
 266         if (strncmp (con->host_port, "unix:", 5) == 0)
 267             cp = strchr (con->host_port+5, ':');
 268         else
 269             cp = strchr (con->host_port, '/');
 270         if (cp)
 271             cp++;
 272     }
 273     if (cp)
 274     {
 275         c = cp;
 276         while ((c = strchr(c, '+')))
 277         {
 278             c++;
 279             no++;
 280         }
 281     }
 282     else
 283         cp = "Default";
 284     databaseNames = (char**)
 285         odr_malloc (con->odr_out, no * sizeof(*databaseNames));
 286     no = 0;
 287     while (*cp)
 288     {
 289         c = strchr (cp, '+');
 290         if (!c)
 291             c = cp + strlen(cp);
 292         else if (c == cp)
 293         {
 294             cp++;
 295             continue;
 296         }
 297         /* cp ptr to first char of db name, c is char
 298            following db name */
 299         databaseNames[no] = (char*) odr_malloc (con->odr_out, 1+c-cp);
 300         memcpy (databaseNames[no], cp, c-cp);
 301         databaseNames[no++][c-cp] = '\0';
 302         cp = c;
 303         if (*cp)
 304             cp++;
 305     }
 306     databaseNames[no] = NULL;
 307     *num = no;
 308     return databaseNames;
 309 }
 310
 311 ZOOM_API(ZOOM_connection)
 312 ZOOM_connection_new (const char *host, int portnum)
 313 {
 314     ZOOM_connection c = ZOOM_connection_create (0);
 315
 316     ZOOM_connection_connect (c, host, portnum);
 317     return c;
 318 }
 319
 320 ZOOM_API(void)
 321 ZOOM_connection_connect(ZOOM_connection c,
 322                         const char *host, int portnum)
 323 {
 324     const char *val;
 325     ZOOM_task task;
 326
 327     if (c->cs)
 328     {
 329         yaz_log (LOG_DEBUG, "reconnect");
 330         c->reconnect_ok = 1;
 331         return;
 332     }
 333     yaz_log(LOG_DEBUG, "connect");
 334     xfree (c->proxy);
 335     val = ZOOM_options_get (c->options, "proxy");
 336     if (val && *val)
 337         c->proxy = xstrdup (val);
 338     else
 339         c->proxy = 0;
 340
 341     xfree (c->charset);
 342     val = ZOOM_options_get (c->options, "charset");
 343     if (val && *val)
 344         c->charset = xstrdup (val);
 345     else
 346         c->charset = 0;
 347
 348     xfree (c->lang);
 349     val = ZOOM_options_get (c->options, "lang");
 350     if (val && *val)
 351         c->lang = xstrdup (val);
 352     else
 353         c->lang = 0;
 354
 355     xfree (c->host_port);
 356     if (portnum)
 357     {
 358         char hostn[128];
 359         sprintf (hostn, "%.80s:%d", host, portnum);
 360         c->host_port = xstrdup(hostn);
 361     }
 362     else
 363         c->host_port = xstrdup(host);
 364
 365     ZOOM_options_set(c->options, "host", c->host_port);
 366
 367     val = ZOOM_options_get (c->options, "cookie");
 368     if (val && *val)
 369         c->cookie_out = xstrdup (val);
 370
 371     val = ZOOM_options_get (c->options, "clientIP");
 372     if (val && *val)
 373         c->client_IP = xstrdup (val);
 374
 375     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 376
 377     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 378
 379     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 380
 381     if (!c->async)
 382     {
 383         while (ZOOM_event (1, &c))
 384             ;
 385     }
 386 }
 387
 388 ZOOM_API(ZOOM_query)
 389 ZOOM_query_create(void)
 390 {
 391     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 392
 393     s->refcount = 1;
 394     s->z_query = 0;
 395     s->sort_spec = 0;
 396     s->odr = odr_createmem (ODR_ENCODE);
 397     s->query_string = 0;
 398
 399     return s;
 400 }
 401
 402 ZOOM_API(void)
 403 ZOOM_query_destroy(ZOOM_query s)
 404 {
 405     if (!s)
 406         return;
 407
 408     (s->refcount)--;
 409     yaz_log (LOG_DEBUG, "ZOOM_query_destroy count=%d", s->refcount);
 410     if (s->refcount == 0)
 411     {
 412         odr_destroy (s->odr);
 413         xfree (s);
 414     }
 415 }
 416
 417 ZOOM_API(int)
 418 ZOOM_query_prefix(ZOOM_query s, const char *str)
 419 {
 420     s->query_string = odr_strdup(s->odr, str);
 421     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 422     s->z_query->which = Z_Query_type_1;
 423     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 424     if (!s->z_query->u.type_1)
 425         return -1;
 426     return 0;
 427 }
 428
 429 ZOOM_API(int)
 430 ZOOM_query_cql(ZOOM_query s, const char *str)
 431 {
 432     Z_External *ext;
 433
 434     s->query_string = odr_strdup(s->odr, str);
 435
 436     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 437     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 438     ext->indirect_reference = 0;
 439     ext->descriptor = 0;
 440     ext->which = Z_External_CQL;
 441     ext->u.cql = s->query_string;
 442
 443     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 444     s->z_query->which = Z_Query_type_104;
 445     s->z_query->u.type_104 =  ext;
 446
 447     return 0;
 448 }
 449
 450 ZOOM_API(int)
 451 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 452 {
 453     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 454     if (!s->sort_spec)
 455         return -1;
 456     return 0;
 457 }
 458
 459 static zoom_ret do_write(ZOOM_connection c);
 460
 461 ZOOM_API(void)
 462 ZOOM_connection_destroy(ZOOM_connection c)
 463 {
 464     ZOOM_resultset r;
 465     if (!c)
 466         return;
 467     if (c->cs)
 468         cs_close (c->cs);
 469     for (r = c->resultsets; r; r = r->next)
 470         r->connection = 0;
 471
 472     xfree (c->buf_in);
 473     xfree (c->addinfo);
 474     odr_destroy (c->odr_in);
 475     odr_destroy (c->odr_out);
 476     ZOOM_options_destroy (c->options);
 477     ZOOM_connection_remove_tasks (c);
 478     xfree (c->host_port);
 479     xfree (c->path);
 480     xfree (c->proxy);
 481     xfree (c->charset);
 482     xfree (c->lang);
 483     xfree (c->cookie_out);
 484     xfree (c->cookie_in);
 485     xfree (c->client_IP);
 486     xfree (c);
 487 }
 488
 489 void ZOOM_resultset_addref (ZOOM_resultset r)
 490 {
 491     if (r)
 492     {
 493         (r->refcount)++;
 494         yaz_log (LOG_DEBUG, "ZOOM_resultset_addref r=%p count=%d",
 495                  r, r->refcount);
 496     }
 497 }
 498 ZOOM_resultset ZOOM_resultset_create ()
 499 {
 500     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 501
 502     yaz_log (LOG_DEBUG, "ZOOM_resultset_create r = %p", r);
 503     r->refcount = 1;
 504     r->size = 0;
 505     r->odr = odr_createmem (ODR_ENCODE);
 506     r->start = 0;
 507     r->piggyback = 1;
 508     r->setname = 0;
 509     r->schema = 0;
 510     r->count = 0;
 511     r->step = 0;
 512     r->record_cache = 0;
 513     r->r_sort_spec = 0;
 514     r->query = 0;
 515     r->connection = 0;
 516     r->next = 0;
 517     return r;
 518 }
 519
 520 ZOOM_API(ZOOM_resultset)
 521 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 522 {
 523     ZOOM_resultset r;
 524     ZOOM_query s = ZOOM_query_create();
 525
 526     ZOOM_query_prefix (s, q);
 527
 528     r = ZOOM_connection_search (c, s);
 529     ZOOM_query_destroy (s);
 530     return r;
 531 }
 532
 533 ZOOM_API(ZOOM_resultset)
 534 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 535 {
 536     ZOOM_resultset r = ZOOM_resultset_create ();
 537     ZOOM_task task;
 538     const char *cp;
 539
 540     r->r_sort_spec = q->sort_spec;
 541     r->query = q;
 542
 543     r->options = ZOOM_options_create_with_parent(c->options);
 544
 545     r->start = ZOOM_options_get_int(r->options, "start", 0);
 546     r->count = ZOOM_options_get_int(r->options, "count", 0);
 547     r->step = ZOOM_options_get_int(r->options, "step", 0);
 548     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 549     cp = ZOOM_options_get (r->options, "setname");
 550     if (cp)
 551         r->setname = xstrdup(cp);
 552     cp = ZOOM_options_get (r->options, "schema");
 553     if (cp)
 554         r->schema = xstrdup(cp);
 555
 556     r->connection = c;
 557
 558     r->next = c->resultsets;
 559     c->resultsets = r;
 560
 561     if (c->host_port && c->proto == PROTO_HTTP)
 562     {
 563         if (!c->cs)
 564         {
 565             yaz_log(LOG_DEBUG, "NO COMSTACK");
 566             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 567         }
 568         else
 569         {
 570             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 571             c->reconnect_ok = 1;
 572         }
 573     }
 574
 575     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 576     task->u.search.resultset = r;
 577     ZOOM_resultset_addref (r);
 578
 579     (q->refcount)++;
 580
 581     if (!c->async)
 582     {
 583         while (ZOOM_event (1, &c))
 584             ;
 585     }
 586     return r;
 587 }
 588
 589 ZOOM_API(void)
 590 ZOOM_resultset_destroy(ZOOM_resultset r)
 591 {
 592     if (!r)
 593         return;
 594     (r->refcount)--;
 595     yaz_log (LOG_DEBUG, "ZOOM_resultset_destroy r = %p count=%d",
 596              r, r->refcount);
 597     if (r->refcount == 0)
 598     {
 599         ZOOM_record_cache rc;
 600
 601         for (rc = r->record_cache; rc; rc = rc->next)
 602             if (rc->rec.wrbuf_marc)
 603                 wrbuf_free (rc->rec.wrbuf_marc, 1);
 604         if (r->connection)
 605         {
 606             /* remove ourselves from the resultsets in connection */
 607             ZOOM_resultset *rp = &r->connection->resultsets;
 608             while (1)
 609             {
 610                 assert (*rp);   /* we must be in this list!! */
 611                 if (*rp == r)
 612                 {   /* OK, we're here - take us out of it */
 613                     *rp = (*rp)->next;
 614                     break;
 615                 }
 616                 rp = &(*rp)->next;
 617             }
 618         }
 619         ZOOM_query_destroy (r->query);
 620         ZOOM_options_destroy (r->options);
 621         odr_destroy (r->odr);
 622         xfree (r->setname);
 623         xfree (r->schema);
 624         xfree (r);
 625     }
 626 }
 627
 628 ZOOM_API(size_t)
 629 ZOOM_resultset_size (ZOOM_resultset r)
 630 {
 631     return r->size;
 632 }
 633
 634 static void do_close (ZOOM_connection c)
 635 {
 636     if (c->cs)
 637         cs_close(c->cs);
 638     c->cs = 0;
 639     c->mask = 0;
 640     c->state = STATE_IDLE;
 641 }
 642
 643 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 644                                      int force_sync, int start, int count)
 645 {
 646     ZOOM_task task;
 647     ZOOM_connection c;
 648     const char *cp;
 649
 650     if (!r)
 651         return;
 652     c = r->connection;
 653     if (!c)
 654         return;
 655
 656     if (c->host_port && c->proto == PROTO_HTTP)
 657     {
 658         if (!c->cs)
 659         {
 660             yaz_log(LOG_DEBUG, "NO COMSTACK");
 661             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 662         }
 663         else
 664         {
 665             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 666             c->reconnect_ok = 1;
 667         }
 668     }
 669     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 670     task->u.retrieve.resultset = r;
 671     task->u.retrieve.start = start;
 672     task->u.retrieve.count = count;
 673
 674     cp = ZOOM_options_get (r->options, "schema");
 675     if (cp)
 676     {
 677         if (!r->schema || strcmp(r->schema, cp))
 678         {
 679             xfree(r->schema);
 680             r->schema = xstrdup(cp);
 681         }
 682     }
 683
 684     ZOOM_resultset_addref (r);
 685
 686     if (!r->connection->async || force_sync)
 687         while (r->connection && ZOOM_event (1, &r->connection))
 688             ;
 689 }
 690
 691 ZOOM_API(void)
 692 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 693                         size_t start, size_t count)
 694 {
 695     int force_present = 0;
 696
 697     if (!r)
 698         return ;
 699     if (count && recs)
 700         force_present = 1;
 701     ZOOM_resultset_retrieve (r, force_present, start, count);
 702     if (force_present)
 703     {
 704         size_t i;
 705         for (i = 0; i< count; i++)
 706             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 707     }
 708 }
 709
 710 static zoom_ret do_connect (ZOOM_connection c)
 711 {
 712     void *add;
 713     const char *effective_host;
 714
 715     if (c->proxy)
 716         effective_host = c->proxy;
 717     else
 718         effective_host = c->host_port;
 719
 720     yaz_log (LOG_DEBUG, "do_connect host=%s", effective_host);
 721
 722     assert (!c->cs);
 723     c->cs = cs_create_host (effective_host, 0, &add);
 724
 725     if (c->cs && c->cs->protocol == PROTO_HTTP)
 726     {
 727 #if HAVE_XML2
 728         const char *path = 0;
 729
 730         c->proto = PROTO_HTTP;
 731         cs_get_host_args(c->host_port, &path);
 732         xfree(c->path);
 733         c->path = xmalloc(strlen(path)+2);
 734         c->path[0] = '/';
 735         strcpy (c->path+1, path);
 736 #else
 737         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 738         do_close(c);
 739         return zoom_complete;
 740 #endif
 741     }
 742     if (c->cs)
 743     {
 744         int ret = cs_connect (c->cs, add);
 745         if (ret == 0)
 746         {
 747             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 748             ZOOM_connection_put_event(c, event);
 749             if (c->proto == PROTO_Z3950)
 750                 ZOOM_connection_send_init(c);
 751             else
 752             {
 753                 /* no init request for SRW .. */
 754                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 755                 ZOOM_connection_remove_task (c);
 756                 c->mask = 0;
 757                 ZOOM_connection_exec_task (c);
 758             }
 759             c->state = STATE_ESTABLISHED;
 760             return zoom_pending;
 761         }
 762         else if (ret > 0)
 763         {
 764             c->state = STATE_CONNECTING;
 765             c->mask = ZOOM_SELECT_EXCEPT;
 766             if (c->cs->io_pending & CS_WANT_WRITE)
 767                 c->mask += ZOOM_SELECT_WRITE;
 768             if (c->cs->io_pending & CS_WANT_READ)
 769                 c->mask += ZOOM_SELECT_READ;
 770             return zoom_pending;
 771         }
 772     }
 773     c->state = STATE_IDLE;
 774     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
 775     return zoom_complete;
 776 }
 777
 778 int z3950_connection_socket(ZOOM_connection c)
 779 {
 780     if (c->cs)
 781         return cs_fileno(c->cs);
 782     return -1;
 783 }
 784
 785 int z3950_connection_mask(ZOOM_connection c)
 786 {
 787     if (c->cs)
 788         return c->mask;
 789     return 0;
 790 }
 791
 792 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 793 {
 794     int i;
 795     for (i = 0; i<200; i++)
 796     {
 797         size_t len;
 798         Z_OtherInformation **oi;
 799         char buf[80];
 800         const char *val;
 801         const char *cp;
 802         int oidval;
 803
 804         sprintf (buf, "otherInfo%d", i);
 805         val = ZOOM_options_get (c->options, buf);
 806         if (!val)
 807             break;
 808         cp = strchr (val, ':');
 809         if (!cp)
 810             continue;
 811         len = cp - val;
 812         if (len >= sizeof(buf))
 813             len = sizeof(buf)-1;
 814         memcpy (buf, val, len);
 815         buf[len] = '\0';
 816         oidval = oid_getvalbyname (buf);
 817         if (oidval == VAL_NONE)
 818             continue;
 819
 820         yaz_oi_APDU(a, &oi);
 821         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 822     }
 823 }
 824
 825 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 826 {
 827     assert (a);
 828     if (c->cookie_out)
 829     {
 830         Z_OtherInformation **oi;
 831         yaz_oi_APDU(a, &oi);
 832         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 833     }
 834     if (c->client_IP)
 835     {
 836         Z_OtherInformation **oi;
 837         yaz_oi_APDU(a, &oi);
 838         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 839     }
 840     otherInfo_attach (c, a, out);
 841     if (!z_APDU(out, &a, 0, 0))
 842     {
 843         FILE *outf = fopen("/tmp/apdu.txt", "a");
 844         if (a && outf)
 845         {
 846             ODR odr_pr = odr_createmem(ODR_PRINT);
 847             fprintf (outf, "a=%p\n", a);
 848             odr_setprint(odr_pr, outf);
 849             z_APDU(odr_pr, &a, 0, 0);
 850             odr_destroy(odr_pr);
 851         }
 852         yaz_log (LOG_DEBUG, "encoding failed");
 853         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
 854         odr_reset(out);
 855         return -1;
 856     }
 857
 858     return 0;
 859 }
 860
 861 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
 862 {
 863     ZOOM_Event event;
 864     assert (a);
 865     if (encode_APDU(c, a, c->odr_out))
 866         return zoom_complete;
 867     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
 868     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
 869     ZOOM_connection_put_event (c, event);
 870     odr_reset(c->odr_out);
 871     return do_write (c);
 872 }
 873
 874 /* returns 1 if PDU was sent OK (still pending )
 875            0 if PDU was not sent OK (nothing to wait for)
 876 */
 877
 878 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
 879 {
 880     const char *impname;
 881     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
 882     Z_InitRequest *ireq = apdu->u.initRequest;
 883     Z_IdAuthentication *auth = (Z_IdAuthentication *)
 884         odr_malloc(c->odr_out, sizeof(*auth));
 885     const char *auth_groupId = ZOOM_options_get (c->options, "group");
 886     const char *auth_userId = ZOOM_options_get (c->options, "user");
 887     const char *auth_password = ZOOM_options_get (c->options, "pass");
 888
 889     ODR_MASK_SET(ireq->options, Z_Options_search);
 890     ODR_MASK_SET(ireq->options, Z_Options_present);
 891     ODR_MASK_SET(ireq->options, Z_Options_scan);
 892     ODR_MASK_SET(ireq->options, Z_Options_sort);
 893     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
 894     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
 895
 896     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
 897     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
 898     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
 899
 900     impname = ZOOM_options_get (c->options, "implementationName");
 901     ireq->implementationName =
 902         (char *) odr_malloc (c->odr_out, 15 + (impname ? strlen(impname) : 0));
 903     strcpy (ireq->implementationName, "");
 904     if (impname)
 905     {
 906         strcat (ireq->implementationName, impname);
 907         strcat (ireq->implementationName, "/");
 908     }
 909     strcat (ireq->implementationName, "ZOOM-C/YAZ");
 910
 911     *ireq->maximumRecordSize =
 912         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
 913     *ireq->preferredMessageSize =
 914         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
 915
 916     if (auth_groupId || auth_password)
 917     {
 918         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
 919         int i = 0;
 920         pass->groupId = 0;
 921         if (auth_groupId && *auth_groupId)
 922         {
 923             pass->groupId = (char *)
 924                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
 925             strcpy(pass->groupId, auth_groupId);
 926             i++;
 927         }
 928         pass->userId = 0;
 929         if (auth_userId && *auth_userId)
 930         {
 931             pass->userId = (char *)
 932                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
 933             strcpy(pass->userId, auth_userId);
 934             i++;
 935         }
 936         pass->password = 0;
 937         if (auth_password && *auth_password)
 938         {
 939             pass->password = (char *)
 940                 odr_malloc(c->odr_out, strlen(auth_password)+1);
 941             strcpy(pass->password, auth_password);
 942             i++;
 943         }
 944         if (i)
 945         {
 946             auth->which = Z_IdAuthentication_idPass;
 947             auth->u.idPass = pass;
 948             ireq->idAuthentication = auth;
 949         }
 950     }
 951     else if (auth_userId)
 952     {
 953         auth->which = Z_IdAuthentication_open;
 954         auth->u.open = (char *)
 955             odr_malloc(c->odr_out, strlen(auth_userId)+1);
 956         strcpy(auth->u.open, auth_userId);
 957         ireq->idAuthentication = auth;
 958     }
 959     if (c->proxy)
 960         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
 961                                  VAL_PROXY, 1, c->host_port);
 962     if (c->charset||c->lang)
 963     {
 964         Z_OtherInformation **oi;
 965         Z_OtherInformationUnit *oi_unit;
 966
 967         yaz_oi_APDU(apdu, &oi);
 968
 969         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
 970         {
 971             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
 972
 973             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
 974             oi_unit->information.externallyDefinedInfo =
 975                 yaz_set_proposal_charneg
 976                 (c->odr_out,
 977                  (const char **)&c->charset, (c->charset) ? 1:0,
 978                  (const char **)&c->lang, (c->lang) ? 1:0, 1);
 979         }
 980     }
 981     assert (apdu);
 982     return send_APDU (c, apdu);
 983 }
 984
 985 #if HAVE_XML2
 986 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
 987 {
 988     char ctype[50];
 989     Z_SOAP_Handler h[2] = {
 990         {"http://www.loc.gov/zing/srw/v1.0/", 0, (Z_SOAP_fun) yaz_srw_codec},
 991         {0, 0, 0}
 992     };
 993     ODR o = odr_createmem(ODR_ENCODE);
 994     int ret;
 995     Z_SOAP *p = odr_malloc(o, sizeof(*p));
 996     Z_GDU *gdu;
 997     ZOOM_Event event;
 998
 999     gdu = z_get_HTTP_Request(c->odr_out);
1000     gdu->u.HTTP_Request->path = c->path;
1001
1002     if (c->host_port)
1003     {
1004         const char *cp0 = strstr(c->host_port, "://");
1005         const char *cp1 = 0;
1006         if (cp0)
1007             cp0 = cp0+3;
1008         else
1009             cp0 = c->host_port;
1010
1011         cp1 = strchr(cp0, '/');
1012         if (!cp1)
1013             cp1 = cp0+strlen(cp0);
1014
1015         if (cp0 && cp1)
1016         {
1017             char *h = odr_malloc(c->odr_out, cp1 - cp0 + 1);
1018             memcpy (h, cp0, cp1 - cp0);
1019             h[cp1-cp0] = '\0';
1020             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1021                               "host", h);
1022         }
1023     }
1024
1025     strcpy(ctype, "text/xml");
1026     if (c->charset && strlen(c->charset) < 20)
1027     {
1028         strcat(ctype, "; charset=");
1029         strcat(ctype, c->charset);
1030     }
1031     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1032                       "Content-Type", ctype);
1033     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1034                       "SOAPAction", "\"\"");
1035     p->which = Z_SOAP_generic;
1036     p->u.generic = odr_malloc(o, sizeof(*p->u.generic));
1037     p->u.generic->no = 0;
1038     p->u.generic->ns = 0;
1039     p->u.generic->p = sr;
1040     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1041
1042     ret = z_soap_codec_enc(o, &p,
1043                            &gdu->u.HTTP_Request->content_buf,
1044                            &gdu->u.HTTP_Request->content_len, h,
1045                            c->charset);
1046
1047     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1048         return zoom_complete;
1049     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1050
1051     odr_destroy(o);
1052
1053     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1054     ZOOM_connection_put_event (c, event);
1055     odr_reset(c->odr_out);
1056     return do_write (c);
1057 }
1058 #endif
1059
1060 #if HAVE_XML2
1061 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1062 {
1063     int i;
1064     ZOOM_resultset resultset = 0;
1065     Z_SRW_PDU *sr = 0;
1066     const char *recordPacking = 0;
1067
1068     if (c->error)                  /* don't continue on error */
1069         return zoom_complete;
1070     assert (c->tasks);
1071     if (c->tasks->which == ZOOM_TASK_SEARCH)
1072     {
1073         resultset = c->tasks->u.search.resultset;
1074         resultset->setname = xstrdup ("default");
1075         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1076     }
1077     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1078     {
1079         resultset = c->tasks->u.retrieve.resultset;
1080
1081         resultset->start = c->tasks->u.retrieve.start;
1082         resultset->count = c->tasks->u.retrieve.count;
1083
1084         if (resultset->start >= resultset->size)
1085             return zoom_complete;
1086         if (resultset->start + resultset->count > resultset->size)
1087             resultset->count = resultset->size - resultset->start;
1088
1089         for (i = 0; i<resultset->count; i++)
1090         {
1091             ZOOM_record rec =
1092                 record_cache_lookup (resultset, i + resultset->start);
1093             if (!rec)
1094                 break;
1095         }
1096         if (i == resultset->count)
1097             return zoom_complete;
1098     }
1099     assert(resultset->query);
1100
1101     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1102
1103     if (resultset->query->z_query->which == Z_Query_type_104
1104         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1105     {
1106
1107         sr->u.request->query_type = Z_SRW_query_type_cql;
1108         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1109     }
1110     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1111              resultset->query->z_query->u.type_1)
1112     {
1113         sr->u.request->query_type = Z_SRW_query_type_pqf;
1114         sr->u.request->query.pqf = resultset->query->query_string;
1115     }
1116     else
1117     {
1118         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1119         return zoom_complete;
1120     }
1121     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1122     sr->u.request->maximumRecords = odr_intdup (
1123         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1124     sr->u.request->recordSchema = resultset->schema;
1125
1126     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1127
1128     if (recordPacking)
1129         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1130
1131     return send_srw(c, sr);
1132 }
1133 #else
1134 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1135 {
1136     return zoom_complete;
1137 }
1138 #endif
1139
1140 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1141 {
1142     ZOOM_resultset r;
1143     int lslb, ssub, mspn;
1144     const char *syntax;
1145     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1146     Z_SearchRequest *search_req = apdu->u.searchRequest;
1147     const char *elementSetName;
1148     const char *smallSetElementSetName;
1149     const char *mediumSetElementSetName;
1150
1151     assert (c->tasks);
1152     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1153
1154     r = c->tasks->u.search.resultset;
1155
1156     elementSetName =
1157         ZOOM_options_get (r->options, "elementSetName");
1158     smallSetElementSetName  =
1159         ZOOM_options_get (r->options, "smallSetElementSetName");
1160     mediumSetElementSetName =
1161         ZOOM_options_get (r->options, "mediumSetElementSetName");
1162
1163     if (!smallSetElementSetName)
1164         smallSetElementSetName = elementSetName;
1165
1166     if (!mediumSetElementSetName)
1167         mediumSetElementSetName = elementSetName;
1168
1169     assert (r);
1170     assert (r->query);
1171
1172     /* prepare query for the search request */
1173     search_req->query = r->query->z_query;
1174
1175     search_req->databaseNames =
1176         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1177
1178     /* get syntax (no need to provide unless piggyback is in effect) */
1179     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1180
1181     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1182     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1183     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1184     if (lslb != -1 && ssub != -1 && mspn != -1)
1185     {
1186         /* So're a Z39.50 expert? Let's hope you don't do sort */
1187         *search_req->largeSetLowerBound = lslb;
1188         *search_req->smallSetUpperBound = ssub;
1189         *search_req->mediumSetPresentNumber = mspn;
1190     }
1191     else if (r->start == 0 && r->count > 0
1192              && r->piggyback && !r->r_sort_spec && !r->schema)
1193     {
1194         /* Regular piggyback - do it unless we're going to do sort */
1195         *search_req->largeSetLowerBound = 2000000000;
1196         *search_req->smallSetUpperBound = 0;
1197         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1198         smallSetElementSetName = 0;
1199     }
1200     else
1201     {
1202         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1203         smallSetElementSetName = 0;
1204         mediumSetElementSetName = 0;
1205         syntax = 0;
1206     }
1207     if (smallSetElementSetName && *smallSetElementSetName)
1208     {
1209         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1210             odr_malloc (c->odr_out, sizeof(*esn));
1211
1212         esn->which = Z_ElementSetNames_generic;
1213         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1214         search_req->smallSetElementSetNames = esn;
1215     }
1216     if (mediumSetElementSetName && *mediumSetElementSetName)
1217     {
1218         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1219             odr_malloc (c->odr_out, sizeof(*esn));
1220
1221         esn->which = Z_ElementSetNames_generic;
1222         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1223         search_req->mediumSetElementSetNames = esn;
1224     }
1225     if (syntax)
1226         search_req->preferredRecordSyntax =
1227             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1228
1229     if (!r->setname)
1230     {
1231         if (c->support_named_resultsets)
1232         {
1233             char setname[14];
1234             int ord;
1235             /* find the lowest unused ordinal so that we re-use
1236                result sets on the server. */
1237             for (ord = 1; ; ord++)
1238             {
1239                 ZOOM_resultset rp;
1240                 sprintf (setname, "%d", ord);
1241                 for (rp = c->resultsets; rp; rp = rp->next)
1242                     if (rp->setname && !strcmp (rp->setname, setname))
1243                         break;
1244                 if (!rp)
1245                     break;
1246             }
1247             r->setname = xstrdup (setname);
1248             yaz_log (LOG_DEBUG, "allocating set %s", r->setname);
1249         }
1250         else
1251             r->setname = xstrdup ("default");
1252         ZOOM_options_set (r->options, "setname", r->setname);
1253     }
1254     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1255     /* send search request */
1256     return send_APDU (c, apdu);
1257 }
1258
1259 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
1260 {
1261     int oclass;
1262     Z_DefaultDiagFormat *r;
1263     char *addinfo = 0;
1264
1265     xfree (c->addinfo);
1266     c->addinfo = 0;
1267     if (p->which != Z_DiagRec_defaultFormat)
1268     {
1269         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1270         return;
1271     }
1272     r = p->u.defaultFormat;
1273     switch (r->which)
1274     {
1275     case Z_DefaultDiagFormat_v2Addinfo:
1276         addinfo = r->u.v2Addinfo;
1277         break;
1278     case Z_DefaultDiagFormat_v3Addinfo:
1279         addinfo = r->u.v3Addinfo;
1280         break;
1281     }
1282     set_dset_error(c, *r->condition,
1283                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1284                    addinfo, 0);
1285 }
1286
1287 ZOOM_API(ZOOM_record)
1288 ZOOM_record_clone (ZOOM_record srec)
1289 {
1290     char *buf;
1291     int size;
1292     ODR odr_enc;
1293     ZOOM_record nrec;
1294
1295     odr_enc = odr_createmem(ODR_ENCODE);
1296     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1297         return 0;
1298     buf = odr_getbuf (odr_enc, &size, 0);
1299
1300     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1301     nrec->odr = odr_createmem(ODR_DECODE);
1302     nrec->wrbuf_marc = 0;
1303     odr_setbuf (nrec->odr, buf, size, 0);
1304     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1305
1306     odr_destroy (odr_enc);
1307     return nrec;
1308 }
1309
1310 ZOOM_API(ZOOM_record)
1311 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1312 {
1313     return record_cache_lookup (s, pos);
1314 }
1315
1316 ZOOM_API(ZOOM_record)
1317 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1318 {
1319     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1320
1321     if (!rec)
1322     {
1323         ZOOM_resultset_retrieve (r, 1, pos, 1);
1324         rec = ZOOM_resultset_record_immediate (r, pos);
1325     }
1326     return rec;
1327 }
1328
1329 ZOOM_API(void)
1330 ZOOM_record_destroy (ZOOM_record rec)
1331 {
1332     if (!rec)
1333         return;
1334     if (rec->wrbuf_marc)
1335         wrbuf_free (rec->wrbuf_marc, 1);
1336     odr_destroy (rec->odr);
1337     xfree (rec);
1338 }
1339
1340 ZOOM_API(const char *)
1341 ZOOM_record_get (ZOOM_record rec, const char *type, int *len)
1342 {
1343     Z_NamePlusRecord *npr;
1344
1345     if (len)
1346         *len = 0; /* default return */
1347
1348     if (!rec)
1349         return 0;
1350     npr = rec->npr;
1351     if (!npr)
1352         return 0;
1353     if (!strcmp (type, "database"))
1354     {
1355         if (len)
1356             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1357         return npr->databaseName;
1358     }
1359     else if (!strcmp (type, "syntax"))
1360     {
1361         const char *desc = 0;
1362         if (npr->which == Z_NamePlusRecord_databaseRecord)
1363         {
1364             Z_External *r = (Z_External *) npr->u.databaseRecord;
1365             oident *ent = oid_getentbyoid(r->direct_reference);
1366             if (ent)
1367                 desc = ent->desc;
1368         }
1369         if (!desc)
1370             desc = "none";
1371         if (len)
1372             *len = strlen(desc);
1373         return desc;
1374     }
1375     else if (!strcmp (type, "render") &&
1376              npr->which == Z_NamePlusRecord_databaseRecord)
1377     {
1378         Z_External *r = (Z_External *) npr->u.databaseRecord;
1379         oident *ent = oid_getentbyoid(r->direct_reference);
1380
1381         if (r->which == Z_External_sutrs)
1382         {
1383             if (len) *len = r->u.sutrs->len;
1384             return (const char *) r->u.sutrs->buf;
1385         }
1386         else if (r->which == Z_External_octet)
1387         {
1388             yaz_marc_t mt;
1389             switch (ent->value)
1390             {
1391             case VAL_SOIF:
1392             case VAL_HTML:
1393             case VAL_SUTRS:
1394                 break;
1395             case VAL_TEXT_XML:
1396             case VAL_APPLICATION_XML:
1397                 break;
1398             default:
1399                 if (!rec->wrbuf_marc)
1400                     rec->wrbuf_marc = wrbuf_alloc();
1401
1402                 mt = yaz_marc_create();
1403                 wrbuf_rewind (rec->wrbuf_marc);
1404                 if (yaz_marc_decode_wrbuf (
1405                         mt, (const char *) r->u.octet_aligned->buf,
1406                         r->u.octet_aligned->len,
1407                         rec->wrbuf_marc) > 0)
1408                 {
1409                     if (len)
1410                         *len = wrbuf_len(rec->wrbuf_marc);
1411                     yaz_marc_destroy(mt);
1412                     return wrbuf_buf(rec->wrbuf_marc);
1413                 }
1414                 yaz_marc_destroy(mt);
1415             }
1416             if (len)
1417                 *len = r->u.octet_aligned->len;
1418             return (const char *) r->u.octet_aligned->buf;
1419         }
1420         else if (r->which == Z_External_grs1)
1421         {
1422             if (!rec->wrbuf_marc)
1423                 rec->wrbuf_marc = wrbuf_alloc();
1424             wrbuf_rewind (rec->wrbuf_marc);
1425             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1426             if (len)
1427                 *len = wrbuf_len(rec->wrbuf_marc);
1428             return wrbuf_buf(rec->wrbuf_marc);
1429         }
1430         return 0;
1431     }
1432     else if (npr->which == Z_NamePlusRecord_databaseRecord &&
1433              (!strcmp (type, "xml") || !strcmp(type, "oai")))
1434     {
1435         Z_External *r = (Z_External *) npr->u.databaseRecord;
1436         oident *ent = oid_getentbyoid(r->direct_reference);
1437
1438         if (r->which == Z_External_sutrs)
1439         {
1440             if (len) *len = r->u.sutrs->len;
1441             return (const char *) r->u.sutrs->buf;
1442         }
1443         else if (r->which == Z_External_octet)
1444         {
1445             yaz_marc_t mt;
1446             int marc_decode_type = YAZ_MARC_MARCXML;
1447
1448             if (!strcmp(type, "oai"))
1449                 marc_decode_type = YAZ_MARC_OAIMARC;
1450             switch (ent->value)
1451             {
1452             case VAL_SOIF:
1453             case VAL_HTML:
1454             case VAL_SUTRS:
1455                 break;
1456             case VAL_TEXT_XML:
1457             case VAL_APPLICATION_XML:
1458                 break;
1459             default:
1460                 if (!rec->wrbuf_marc)
1461                     rec->wrbuf_marc = wrbuf_alloc();
1462                 wrbuf_rewind (rec->wrbuf_marc);
1463                 mt = yaz_marc_create();
1464
1465                 yaz_marc_xml(mt, YAZ_MARC_MARCXML);
1466                 if (yaz_marc_decode_wrbuf (
1467                         mt, (const char *) r->u.octet_aligned->buf,
1468                         r->u.octet_aligned->len,
1469                         rec->wrbuf_marc) > 0)
1470                 {
1471                     if (len)
1472                         *len = wrbuf_len(rec->wrbuf_marc);
1473                     yaz_marc_destroy(mt);
1474                     return wrbuf_buf(rec->wrbuf_marc);
1475                 }
1476                 yaz_marc_destroy(mt);
1477             }
1478             if (len) *len = r->u.octet_aligned->len;
1479             return (const char *) r->u.octet_aligned->buf;
1480         }
1481         else if (r->which == Z_External_grs1)
1482         {
1483             if (len) *len = 5;
1484             return "GRS-1";
1485         }
1486         else if (r->which == Z_External_OPAC)
1487         {
1488             if (len) *len = 4;
1489             return "OPAC";
1490         }
1491         return 0;
1492     }
1493     else if (!strcmp (type, "raw"))
1494     {
1495         if (npr->which == Z_NamePlusRecord_databaseRecord)
1496         {
1497             Z_External *r = (Z_External *) npr->u.databaseRecord;
1498
1499             if (r->which == Z_External_sutrs)
1500             {
1501                 if (len) *len = r->u.sutrs->len;
1502                 return (const char *) r->u.sutrs->buf;
1503             }
1504             else if (r->which == Z_External_octet)
1505             {
1506                 if (len) *len = r->u.octet_aligned->len;
1507                 return (const char *) r->u.octet_aligned->buf;
1508             }
1509             else /* grs-1, explain, ... */
1510             {
1511                 if (len) *len = -1;
1512                 return (const char *) npr->u.databaseRecord;
1513             }
1514         }
1515         return 0;
1516     }
1517     else if (!strcmp (type, "ext"))
1518     {
1519         if (npr->which == Z_NamePlusRecord_databaseRecord)
1520             return (const char *) npr->u.databaseRecord;
1521         return 0;
1522     }
1523     return 0;
1524 }
1525
1526 static int strcmp_null(const char *v1, const char *v2)
1527 {
1528     if (!v1 && !v2)
1529         return 0;
1530     if (!v1 || !v2)
1531         return -1;
1532     return strcmp(v1, v2);
1533 }
1534
1535 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1536                               int pos)
1537 {
1538     ZOOM_record_cache rc;
1539     const char *elementSetName =
1540         ZOOM_resultset_option_get (r, "elementSetName");
1541     const char *syntax =
1542         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1543
1544     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1545     ZOOM_connection_put_event(r->connection, event);
1546
1547     for (rc = r->record_cache; rc; rc = rc->next)
1548     {
1549         if (pos == rc->pos)
1550         {
1551             if (strcmp_null(r->schema, rc->schema))
1552                 continue;
1553             if (strcmp_null(elementSetName,rc->elementSetName))
1554                 continue;
1555             if (strcmp_null(syntax, rc->syntax))
1556                 continue;
1557             /* not destroying rc->npr (it's handled by nmem )*/
1558             rc->rec.npr = npr;
1559             /* keeping wrbuf_marc too */
1560             return;
1561         }
1562     }
1563     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1564     rc->rec.npr = npr;
1565     rc->rec.odr = 0;
1566     rc->rec.wrbuf_marc = 0;
1567     if (elementSetName)
1568         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1569     else
1570         rc->elementSetName = 0;
1571
1572     if (syntax)
1573         rc->syntax = odr_strdup (r->odr, syntax);
1574     else
1575         rc->syntax = 0;
1576
1577     if (r->schema)
1578         rc->schema = odr_strdup (r->odr, r->schema);
1579     else
1580         rc->schema = 0;
1581
1582     rc->pos = pos;
1583     rc->next = r->record_cache;
1584     r->record_cache = rc;
1585 }
1586
1587 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1588 {
1589     ZOOM_record_cache rc;
1590     const char *elementSetName =
1591         ZOOM_resultset_option_get (r, "elementSetName");
1592     const char *syntax =
1593         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1594
1595     for (rc = r->record_cache; rc; rc = rc->next)
1596     {
1597         if (pos == rc->pos)
1598         {
1599             if (strcmp_null(r->schema, rc->schema))
1600                 continue;
1601             if (strcmp_null(elementSetName,rc->elementSetName))
1602                 continue;
1603             if (strcmp_null(syntax, rc->syntax))
1604                 continue;
1605             return &rc->rec;
1606         }
1607     }
1608     return 0;
1609 }
1610
1611 static void handle_records (ZOOM_connection c, Z_Records *sr,
1612                             int present_phase)
1613 {
1614     ZOOM_resultset resultset;
1615
1616     if (!c->tasks)
1617         return ;
1618     switch (c->tasks->which)
1619     {
1620     case ZOOM_TASK_SEARCH:
1621         resultset = c->tasks->u.search.resultset;
1622         break;
1623     case ZOOM_TASK_RETRIEVE:
1624         resultset = c->tasks->u.retrieve.resultset;
1625         break;
1626     default:
1627         return;
1628     }
1629     if (sr && sr->which == Z_Records_NSD)
1630     {
1631         Z_DiagRec dr, *dr_p = &dr;
1632         dr.which = Z_DiagRec_defaultFormat;
1633         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1634
1635         response_diag (c, dr_p);
1636     }
1637     else if (sr && sr->which == Z_Records_multipleNSD)
1638     {
1639         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1640             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1641         else
1642             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1643     }
1644     else
1645     {
1646         if (resultset->count + resultset->start > resultset->size)
1647             resultset->count = resultset->size - resultset->start;
1648         if (resultset->count < 0)
1649             resultset->count = 0;
1650         if (sr && sr->which == Z_Records_DBOSD)
1651         {
1652             int i;
1653             NMEM nmem = odr_extract_mem (c->odr_in);
1654             Z_NamePlusRecordList *p =
1655                 sr->u.databaseOrSurDiagnostics;
1656             for (i = 0; i<p->num_records; i++)
1657             {
1658                 record_cache_add (resultset, p->records[i],
1659                                   i+ resultset->start);
1660             }
1661             /* transfer our response to search_nmem .. we need it later */
1662             nmem_transfer (resultset->odr->mem, nmem);
1663             nmem_destroy (nmem);
1664             if (present_phase && p->num_records == 0)
1665             {
1666                 /* present response and we didn't get any records! */
1667                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1668             }
1669         }
1670         else if (present_phase)
1671         {
1672             /* present response and we didn't get any records! */
1673             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1674         }
1675     }
1676 }
1677
1678 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1679 {
1680     handle_records (c, pr->records, 1);
1681 }
1682
1683 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1684 {
1685     ZOOM_resultset resultset;
1686     ZOOM_Event event;
1687
1688     yaz_log (LOG_DEBUG, "got search response");
1689
1690     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1691         return ;
1692
1693     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
1694     ZOOM_connection_put_event(c, event);
1695
1696     resultset = c->tasks->u.search.resultset;
1697
1698     resultset->size = *sr->resultCount;
1699     handle_records (c, sr->records, 0);
1700 }
1701
1702 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
1703 {
1704     if (res->diagnostics && res->num_diagnostics > 0)
1705         response_diag (c, res->diagnostics[0]);
1706 }
1707
1708 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
1709 {
1710     NMEM nmem = odr_extract_mem (c->odr_in);
1711     ZOOM_scanset scan;
1712
1713     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
1714         return 0;
1715     scan = c->tasks->u.scan.scan;
1716
1717     if (res->entries && res->entries->nonsurrogateDiagnostics)
1718         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
1719     scan->scan_response = res;
1720     nmem_transfer (scan->odr->mem, nmem);
1721     if (res->stepSize)
1722         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
1723     if (res->positionOfTerm)
1724         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
1725     if (res->scanStatus)
1726         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
1727     if (res->numberOfEntriesReturned)
1728         ZOOM_options_set_int (scan->options, "number",
1729                               *res->numberOfEntriesReturned);
1730     nmem_destroy (nmem);
1731     return 1;
1732 }
1733
1734 static zoom_ret send_sort (ZOOM_connection c)
1735 {
1736     ZOOM_resultset  resultset;
1737
1738     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1739         return zoom_complete;
1740
1741     resultset = c->tasks->u.search.resultset;
1742
1743     if (c->error)
1744     {
1745         resultset->r_sort_spec = 0;
1746         return zoom_complete;
1747     }
1748     if (resultset->r_sort_spec)
1749     {
1750         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
1751         Z_SortRequest *req = apdu->u.sortRequest;
1752
1753         req->num_inputResultSetNames = 1;
1754         req->inputResultSetNames = (Z_InternationalString **)
1755             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
1756         req->inputResultSetNames[0] =
1757             odr_strdup (c->odr_out, resultset->setname);
1758         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
1759         req->sortSequence = resultset->r_sort_spec;
1760         resultset->r_sort_spec = 0;
1761         return send_APDU (c, apdu);
1762     }
1763     return zoom_complete;
1764 }
1765
1766 static zoom_ret send_present (ZOOM_connection c)
1767 {
1768     Z_APDU *apdu = 0;
1769     Z_PresentRequest *req = 0;
1770     int i = 0;
1771     const char *syntax = 0;
1772     const char *elementSetName = 0;
1773     ZOOM_resultset  resultset;
1774
1775     if (!c->tasks)
1776         return zoom_complete;
1777
1778     switch (c->tasks->which)
1779     {
1780     case ZOOM_TASK_SEARCH:
1781         resultset = c->tasks->u.search.resultset;
1782         break;
1783     case ZOOM_TASK_RETRIEVE:
1784         resultset = c->tasks->u.retrieve.resultset;
1785         resultset->start = c->tasks->u.retrieve.start;
1786         resultset->count = c->tasks->u.retrieve.count;
1787
1788         if (resultset->start >= resultset->size)
1789             return zoom_complete;
1790         if (resultset->start + resultset->count > resultset->size)
1791             resultset->count = resultset->size - resultset->start;
1792         break;
1793     default:
1794         return zoom_complete;
1795     }
1796
1797     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
1798     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
1799
1800     if (c->error)                  /* don't continue on error */
1801         return zoom_complete;
1802     if (resultset->start < 0)
1803         return zoom_complete;
1804     for (i = 0; i<resultset->count; i++)
1805     {
1806         ZOOM_record rec =
1807             record_cache_lookup (resultset, i + resultset->start);
1808         if (!rec)
1809             break;
1810     }
1811     if (i == resultset->count)
1812         return zoom_complete;
1813
1814     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
1815     req = apdu->u.presentRequest;
1816
1817     resultset->start += i;
1818     resultset->count -= i;
1819     *req->resultSetStartPoint = resultset->start + 1;
1820     *req->numberOfRecordsRequested = resultset->step>0 ?
1821         resultset->step : resultset->count;
1822     assert (*req->numberOfRecordsRequested > 0);
1823
1824     if (syntax && *syntax)
1825         req->preferredRecordSyntax =
1826             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1827
1828     if (resultset->schema && *resultset->schema)
1829     {
1830         Z_RecordComposition *compo = (Z_RecordComposition *)
1831             odr_malloc (c->odr_out, sizeof(*compo));
1832
1833         req->recordComposition = compo;
1834         compo->which = Z_RecordComp_complex;
1835         compo->u.complex = (Z_CompSpec *)
1836             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
1837         compo->u.complex->selectAlternativeSyntax = (bool_t *)
1838             odr_malloc(c->odr_out, sizeof(bool_t));
1839         *compo->u.complex->selectAlternativeSyntax = 0;
1840
1841         compo->u.complex->generic = (Z_Specification *)
1842             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
1843
1844         compo->u.complex->generic->which = Z_Schema_oid;
1845         compo->u.complex->generic->schema.oid = (Odr_oid *)
1846             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
1847
1848         if (!compo->u.complex->generic->schema.oid)
1849         {
1850             /* OID wasn't a schema! Try record syntax instead. */
1851
1852             compo->u.complex->generic->schema.oid = (Odr_oid *)
1853                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
1854         }
1855         if (elementSetName && *elementSetName)
1856         {
1857             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
1858                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
1859             compo->u.complex->generic->elementSpec->which =
1860                 Z_ElementSpec_elementSetName;
1861             compo->u.complex->generic->elementSpec->u.elementSetName =
1862                 odr_strdup (c->odr_out, elementSetName);
1863         }
1864         else
1865             compo->u.complex->generic->elementSpec = 0;
1866         compo->u.complex->num_dbSpecific = 0;
1867         compo->u.complex->dbSpecific = 0;
1868         compo->u.complex->num_recordSyntax = 0;
1869         compo->u.complex->recordSyntax = 0;
1870     }
1871     else if (elementSetName && *elementSetName)
1872     {
1873         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1874             odr_malloc (c->odr_out, sizeof(*esn));
1875         Z_RecordComposition *compo = (Z_RecordComposition *)
1876             odr_malloc (c->odr_out, sizeof(*compo));
1877
1878         esn->which = Z_ElementSetNames_generic;
1879         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
1880         compo->which = Z_RecordComp_simple;
1881         compo->u.simple = esn;
1882         req->recordComposition = compo;
1883     }
1884     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
1885     return send_APDU (c, apdu);
1886 }
1887
1888 ZOOM_API(ZOOM_scanset)
1889 ZOOM_connection_scan (ZOOM_connection c, const char *start)
1890 {
1891     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
1892
1893     scan->connection = c;
1894     scan->odr = odr_createmem (ODR_DECODE);
1895     scan->options = ZOOM_options_create_with_parent (c->options);
1896     scan->refcount = 1;
1897     scan->scan_response = 0;
1898
1899     if ((scan->termListAndStartPoint =
1900          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
1901                       start)))
1902     {
1903         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
1904         task->u.scan.scan = scan;
1905
1906         (scan->refcount)++;
1907         if (!c->async)
1908         {
1909             while (ZOOM_event (1, &c))
1910                 ;
1911         }
1912     }
1913     return scan;
1914 }
1915
1916 ZOOM_API(void)
1917 ZOOM_scanset_destroy (ZOOM_scanset scan)
1918 {
1919     if (!scan)
1920         return;
1921     (scan->refcount)--;
1922     if (scan->refcount == 0)
1923     {
1924         odr_destroy (scan->odr);
1925
1926         ZOOM_options_destroy (scan->options);
1927         xfree (scan);
1928     }
1929 }
1930
1931 static zoom_ret send_package (ZOOM_connection c)
1932 {
1933     ZOOM_Event event;
1934     if (!c->tasks)
1935         return zoom_complete;
1936     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
1937
1938     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1939     ZOOM_connection_put_event (c, event);
1940
1941     return do_write_ex (c, c->tasks->u.package->buf_out,
1942                         c->tasks->u.package->len_out);
1943 }
1944
1945 static zoom_ret send_scan (ZOOM_connection c)
1946 {
1947     ZOOM_scanset scan;
1948     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
1949     Z_ScanRequest *req = apdu->u.scanRequest;
1950     if (!c->tasks)
1951         return zoom_complete;
1952     assert (c->tasks->which == ZOOM_TASK_SCAN);
1953     scan = c->tasks->u.scan.scan;
1954
1955     req->termListAndStartPoint = scan->termListAndStartPoint;
1956     req->attributeSet = scan->attributeSet;
1957
1958     *req->numberOfTermsRequested =
1959         ZOOM_options_get_int(scan->options, "number", 10);
1960
1961     req->preferredPositionInResponse =
1962         odr_intdup (c->odr_out,
1963                     ZOOM_options_get_int(scan->options, "position", 1));
1964
1965     req->stepSize =
1966         odr_intdup (c->odr_out,
1967                     ZOOM_options_get_int(scan->options, "stepSize", 0));
1968
1969     req->databaseNames = set_DatabaseNames (c, scan->options,
1970                                             &req->num_databaseNames);
1971
1972     return send_APDU (c, apdu);
1973 }
1974
1975 ZOOM_API(size_t)
1976 ZOOM_scanset_size (ZOOM_scanset scan)
1977 {
1978     if (!scan || !scan->scan_response || !scan->scan_response->entries)
1979         return 0;
1980     return scan->scan_response->entries->num_entries;
1981 }
1982
1983 ZOOM_API(const char *)
1984 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
1985                                int *occ, int *len)
1986 {
1987     const char *term = 0;
1988     size_t noent = ZOOM_scanset_size (scan);
1989     Z_ScanResponse *res = scan->scan_response;
1990
1991     *len = 0;
1992     *occ = 0;
1993     if (pos >= noent)
1994         return 0;
1995     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
1996     {
1997         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
1998
1999         if (t->term->which == Z_Term_general)
2000         {
2001             term = (const char *) t->term->u.general->buf;
2002             *len = t->term->u.general->len;
2003         }
2004         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2005     }
2006     return term;
2007 }
2008
2009 ZOOM_API(const char *)
2010 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2011 {
2012     return ZOOM_options_get (scan->options, key);
2013 }
2014
2015 ZOOM_API(void)
2016 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2017                               const char *val)
2018 {
2019     ZOOM_options_set (scan->options, key, val);
2020 }
2021
2022 static Z_APDU *create_es_package (ZOOM_package p, int type)
2023 {
2024     const char *str;
2025     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2026     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2027
2028     *req->function = Z_ExtendedServicesRequest_create;
2029
2030     str = ZOOM_options_get(p->options, "package-name");
2031     if (str && *str)
2032         req->packageName = nmem_strdup (p->odr_out->mem, str);
2033
2034     str = ZOOM_options_get(p->options, "user-id");
2035     if (str)
2036         req->userId = nmem_strdup (p->odr_out->mem, str);
2037
2038     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2039                                               type);
2040
2041     str = ZOOM_options_get(p->options, "function");
2042     if (str)
2043     {
2044         if (!strcmp (str, "create"))
2045             *req->function = 1;
2046         if (!strcmp (str, "delete"))
2047             *req->function = 2;
2048         if (!strcmp (str, "modify"))
2049             *req->function = 3;
2050     }
2051     return apdu;
2052 }
2053
2054 static const char *ill_array_lookup (void *clientData, const char *idx)
2055 {
2056     ZOOM_package p = (ZOOM_package) clientData;
2057     return ZOOM_options_get (p->options, idx+4);
2058 }
2059
2060 static Z_External *encode_ill_request (ZOOM_package p)
2061 {
2062     ODR out = p->odr_out;
2063     ILL_Request *req;
2064     Z_External *r = 0;
2065     struct ill_get_ctl ctl;
2066
2067     ctl.odr = p->odr_out;
2068     ctl.clientData = p;
2069     ctl.f = ill_array_lookup;
2070
2071     req = ill_get_ILLRequest(&ctl, "ill", 0);
2072
2073     if (!ill_Request (out, &req, 0, 0))
2074     {
2075         int ill_request_size;
2076         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2077         if (ill_request_buf)
2078             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2079         return 0;
2080     }
2081     else
2082     {
2083         oident oid;
2084         int illRequest_size = 0;
2085         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2086
2087         oid.proto = PROTO_GENERAL;
2088         oid.oclass = CLASS_GENERAL;
2089         oid.value = VAL_ISO_ILL_1;
2090
2091         r = (Z_External *) odr_malloc (out, sizeof(*r));
2092         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2093         r->indirect_reference = 0;
2094         r->descriptor = 0;
2095         r->which = Z_External_single;
2096
2097         r->u.single_ASN1_type = (Odr_oct *)
2098             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2099         r->u.single_ASN1_type->buf = (unsigned char*)
2100             odr_malloc (out, illRequest_size);
2101         r->u.single_ASN1_type->len = illRequest_size;
2102         r->u.single_ASN1_type->size = illRequest_size;
2103         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2104     }
2105     return r;
2106 }
2107
2108 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2109 {
2110     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2111     const char *str;
2112
2113     req->which=Z_IOItemOrder_esRequest;
2114     req->u.esRequest = (Z_IORequest *)
2115         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2116
2117     /* to keep part ... */
2118     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2119         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2120     req->u.esRequest->toKeep->supplDescription = 0;
2121     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2122         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2123
2124     str = ZOOM_options_get(p->options, "contact-name");
2125     req->u.esRequest->toKeep->contact->name = str ?
2126         nmem_strdup (p->odr_out->mem, str) : 0;
2127
2128     str = ZOOM_options_get(p->options, "contact-phone");
2129     req->u.esRequest->toKeep->contact->phone = str ?
2130         nmem_strdup (p->odr_out->mem, str) : 0;
2131
2132     str = ZOOM_options_get(p->options, "contact-email");
2133     req->u.esRequest->toKeep->contact->email = str ?
2134         nmem_strdup (p->odr_out->mem, str) : 0;
2135
2136     req->u.esRequest->toKeep->addlBilling = 0;
2137
2138     /* not to keep part ... */
2139     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2140         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2141
2142     str = ZOOM_options_get(p->options, "itemorder-setname");
2143     if (!str)
2144         str = "default";
2145
2146     if (!*str)
2147         req->u.esRequest->notToKeep->resultSetItem = 0;
2148     else
2149     {
2150         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2151            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2152
2153         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2154            nmem_strdup (p->odr_out->mem, str);
2155         req->u.esRequest->notToKeep->resultSetItem->item =
2156             (int *) odr_malloc(p->odr_out, sizeof(int));
2157
2158         str = ZOOM_options_get(p->options, "itemorder-item");
2159         *req->u.esRequest->notToKeep->resultSetItem->item =
2160             (str ? atoi(str) : 1);
2161     }
2162     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2163
2164     return req;
2165 }
2166
2167 ZOOM_API(void)
2168     ZOOM_package_send (ZOOM_package p, const char *type)
2169 {
2170     Z_APDU *apdu = 0;
2171     ZOOM_connection c;
2172     if (!p)
2173         return;
2174     c = p->connection;
2175     odr_reset (p->odr_out);
2176     xfree (p->buf_out);
2177     p->buf_out = 0;
2178     if (!strcmp(type, "itemorder"))
2179     {
2180         Z_External *r;
2181         apdu = create_es_package (p, VAL_ITEMORDER);
2182         if (apdu)
2183         {
2184             r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2185
2186             r->direct_reference =
2187                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2188                                        VAL_ITEMORDER);
2189             r->descriptor = 0;
2190             r->which = Z_External_itemOrder;
2191             r->indirect_reference = 0;
2192             r->u.itemOrder = encode_item_order (p);
2193
2194             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2195         }
2196     }
2197     if (apdu)
2198     {
2199         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2200         {
2201             char *buf;
2202
2203             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2204             task->u.package = p;
2205             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2206             p->buf_out = (char *) xmalloc (p->len_out);
2207             memcpy (p->buf_out, buf, p->len_out);
2208
2209             (p->refcount)++;
2210             if (!c->async)
2211             {
2212                 while (ZOOM_event (1, &c))
2213                     ;
2214             }
2215         }
2216     }
2217 }
2218
2219 ZOOM_API(ZOOM_package)
2220     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2221 {
2222     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2223
2224     p->connection = c;
2225     p->odr_out = odr_createmem (ODR_ENCODE);
2226     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2227     p->refcount = 1;
2228     p->buf_out = 0;
2229     p->len_out = 0;
2230     return p;
2231 }
2232
2233 ZOOM_API(void)
2234     ZOOM_package_destroy(ZOOM_package p)
2235 {
2236     if (!p)
2237         return;
2238     (p->refcount)--;
2239     if (p->refcount == 0)
2240     {
2241         odr_destroy (p->odr_out);
2242         xfree (p->buf_out);
2243
2244         ZOOM_options_destroy (p->options);
2245         xfree (p);
2246     }
2247 }
2248
2249 ZOOM_API(const char *)
2250 ZOOM_package_option_get (ZOOM_package p, const char *key)
2251 {
2252     return ZOOM_options_get (p->options, key);
2253 }
2254
2255
2256 ZOOM_API(void)
2257 ZOOM_package_option_set (ZOOM_package p, const char *key,
2258                               const char *val)
2259 {
2260     ZOOM_options_set (p->options, key, val);
2261 }
2262
2263 static int ZOOM_connection_exec_task (ZOOM_connection c)
2264 {
2265     ZOOM_task task = c->tasks;
2266     zoom_ret ret = zoom_complete;
2267
2268     if (!task)
2269     {
2270         yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task task=<null>");
2271         return 0;
2272     }
2273     yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task type=%d run=%d",
2274              task->which, task->running);
2275     if (c->error != ZOOM_ERROR_NONE)
2276     {
2277         yaz_log (LOG_DEBUG, "remove tasks because of error = %d", c->error);
2278         ZOOM_connection_remove_tasks (c);
2279         return 0;
2280     }
2281     if (task->running)
2282     {
2283         yaz_log (LOG_DEBUG, "task already running");
2284         return 0;
2285     }
2286     task->running = 1;
2287     ret = zoom_complete;
2288     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2289     {
2290         switch (task->which)
2291         {
2292         case ZOOM_TASK_SEARCH:
2293             if (c->proto == PROTO_HTTP)
2294                 ret = ZOOM_connection_srw_send_search(c);
2295             else
2296                 ret = ZOOM_connection_send_search(c);
2297             break;
2298         case ZOOM_TASK_RETRIEVE:
2299             if (c->proto == PROTO_HTTP)
2300                 ret = ZOOM_connection_srw_send_search(c);
2301             else
2302                 ret = send_present (c);
2303             break;
2304         case ZOOM_TASK_CONNECT:
2305             ret = do_connect(c);
2306             break;
2307         case ZOOM_TASK_SCAN:
2308             ret = send_scan(c);
2309             break;
2310         case ZOOM_TASK_PACKAGE:
2311             ret = send_package(c);
2312             break;
2313         }
2314     }
2315     else
2316     {
2317         yaz_log (LOG_DEBUG, "remove tasks because no connection exist");
2318         ZOOM_connection_remove_tasks (c);
2319     }
2320     if (ret == zoom_complete)
2321     {
2322         yaz_log (LOG_DEBUG, "task removed (complete)");
2323         ZOOM_connection_remove_task (c);
2324         return 0;
2325     }
2326     yaz_log (LOG_DEBUG, "task pending");
2327     return 1;
2328 }
2329
2330 static zoom_ret send_sort_present (ZOOM_connection c)
2331 {
2332     zoom_ret r = send_sort (c);
2333     if (r == zoom_complete)
2334         r = send_present (c);
2335     return r;
2336 }
2337
2338 static int es_response (ZOOM_connection c,
2339                         Z_ExtendedServicesResponse *res)
2340 {
2341     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2342         return 0;
2343     if (res->diagnostics && res->num_diagnostics > 0)
2344         response_diag(c, res->diagnostics[0]);
2345     if (res->taskPackage &&
2346         res->taskPackage->which == Z_External_extendedService)
2347     {
2348         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2349         Odr_oct *id = taskPackage->targetReference;
2350
2351         if (id)
2352             ZOOM_options_setl (c->tasks->u.package->options,
2353                                "targetReference", (char*) id->buf, id->len);
2354     }
2355     return 1;
2356 }
2357
2358
2359 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2360 {
2361     Z_InitResponse *initrs;
2362
2363     c->mask = 0;
2364     yaz_log (LOG_DEBUG, "handle_apdu type=%d", apdu->which);
2365     switch(apdu->which)
2366     {
2367     case Z_APDU_initResponse:
2368         initrs = apdu->u.initResponse;
2369         ZOOM_connection_option_set(c, "targetImplementationId",
2370                                    initrs->implementationId ?
2371                                    initrs->implementationId : "");
2372         ZOOM_connection_option_set(c, "targetImplementationName",
2373                                    initrs->implementationName ?
2374                                    initrs->implementationName : "");
2375         ZOOM_connection_option_set(c, "targetImplementationVersion",
2376                                    initrs->implementationVersion ?
2377                                    initrs->implementationVersion : "");
2378         if (!*initrs->result)
2379         {
2380             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0);
2381         }
2382         else
2383         {
2384             char *cookie =
2385                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2386                                           VAL_COOKIE, 1, 0);
2387             xfree (c->cookie_in);
2388             c->cookie_in = 0;
2389             if (cookie)
2390                 c->cookie_in = xstrdup(cookie);
2391             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2392                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2393                 c->support_named_resultsets = 1;
2394             if (c->tasks)
2395             {
2396                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2397                 ZOOM_connection_remove_task (c);
2398             }
2399             ZOOM_connection_exec_task (c);
2400         }
2401         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2402         {
2403             NMEM tmpmem = nmem_create();
2404             Z_CharSetandLanguageNegotiation *p =
2405                 yaz_get_charneg_record(initrs->otherInfo);
2406
2407             if (p)
2408             {
2409                 char *charset=NULL, *lang=NULL;
2410                 int sel;
2411
2412                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2413                 yaz_log(LOG_DEBUG, "Target accepted: charset %s, "
2414                         "language %s, select %d",
2415                         charset ? charset : "none", lang ? lang : "none", sel);
2416                 if (charset)
2417                     ZOOM_connection_option_set (c, "negotiation-charset",
2418                                                 charset);
2419                 if (lang)
2420                     ZOOM_connection_option_set (c, "negotiation-lang",
2421                                                 lang);
2422                 nmem_destroy(tmpmem);
2423             }
2424         }
2425         break;
2426     case Z_APDU_searchResponse:
2427         handle_search_response (c, apdu->u.searchResponse);
2428         if (send_sort_present (c) == zoom_complete)
2429             ZOOM_connection_remove_task (c);
2430         break;
2431     case Z_APDU_presentResponse:
2432         handle_present_response (c, apdu->u.presentResponse);
2433         if (send_present (c) == zoom_complete)
2434             ZOOM_connection_remove_task (c);
2435         break;
2436     case Z_APDU_sortResponse:
2437         sort_response (c, apdu->u.sortResponse);
2438         if (send_present (c) == zoom_complete)
2439             ZOOM_connection_remove_task (c);
2440         break;
2441     case Z_APDU_scanResponse:
2442         scan_response (c, apdu->u.scanResponse);
2443         ZOOM_connection_remove_task (c);
2444         break;
2445     case Z_APDU_extendedServicesResponse:
2446         es_response (c, apdu->u.extendedServicesResponse);
2447         ZOOM_connection_remove_task (c);
2448         break;
2449     case Z_APDU_close:
2450         if (c->reconnect_ok)
2451         {
2452             do_close(c);
2453             c->tasks->running = 0;
2454             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2455         }
2456         else
2457         {
2458             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2459             do_close(c);
2460         }
2461         break;
2462     default:
2463         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2464         do_close(c);
2465     }
2466 }
2467
2468 #if HAVE_XML2
2469 static void handle_srw_response(ZOOM_connection c,
2470                                 Z_SRW_searchRetrieveResponse *res)
2471 {
2472     ZOOM_resultset resultset = 0;
2473     int i;
2474     NMEM nmem;
2475     ZOOM_Event event;
2476
2477     if (!c->tasks)
2478         return;
2479
2480     if (c->tasks->which == ZOOM_TASK_SEARCH)
2481         resultset = c->tasks->u.search.resultset;
2482     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
2483         resultset = c->tasks->u.retrieve.resultset;
2484     else
2485         return ;
2486
2487     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2488     ZOOM_connection_put_event(c, event);
2489
2490     resultset->size = 0;
2491
2492     yaz_log(LOG_DEBUG, "got SRW response OK");
2493
2494     if (res->numberOfRecords)
2495         resultset->size = *res->numberOfRecords;
2496
2497     for (i = 0; i<res->num_records; i++)
2498     {
2499         int pos;
2500
2501         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
2502             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
2503
2504         if (res->records[i].recordPosition &&
2505             *res->records[i].recordPosition > 0)
2506             pos = *res->records[i].recordPosition - 1;
2507         else
2508             pos = resultset->start + i;
2509
2510         npr->databaseName = 0;
2511         npr->which = Z_NamePlusRecord_databaseRecord;
2512         npr->u.databaseRecord = (Z_External *)
2513             odr_malloc(c->odr_in, sizeof(Z_External));
2514         npr->u.databaseRecord->descriptor = 0;
2515         npr->u.databaseRecord->direct_reference =
2516             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
2517         npr->u.databaseRecord->which = Z_External_octet;
2518         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
2519             odr_malloc(c->odr_in, sizeof(Odr_oct));
2520         npr->u.databaseRecord->u.octet_aligned->buf =
2521             res->records[i].recordData_buf;
2522         npr->u.databaseRecord->u.octet_aligned->len =
2523             npr->u.databaseRecord->u.octet_aligned->size =
2524             res->records[i].recordData_len;
2525         record_cache_add (resultset, npr, pos);
2526     }
2527     if (res->num_diagnostics > 0)
2528     {
2529         set_dset_error(c, *res->diagnostics[0].code, "SRW",
2530                        res->diagnostics[0].details, 0);
2531     }
2532     nmem = odr_extract_mem(c->odr_in);
2533     nmem_transfer(resultset->odr->mem, nmem);
2534     nmem_destroy(nmem);
2535 }
2536 #endif
2537
2538 #if HAVE_XML2
2539 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
2540 {
2541     int ret = -1;
2542     const char *content_type = z_HTTP_header_lookup(hres->headers,
2543                                                     "Content-Type");
2544     const char *connection_head = z_HTTP_header_lookup(hres->headers,
2545                                                        "Connection");
2546     c->mask = 0;
2547     yaz_log (LOG_DEBUG, "handle_http");
2548
2549     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
2550     {
2551         Z_SOAP *soap_package = 0;
2552         ODR o = odr_createmem(ODR_DECODE);
2553         Z_SOAP_Handler soap_handlers[2] = {
2554             {"http://www.loc.gov/zing/srw/v1.0/", 0,
2555              (Z_SOAP_fun) yaz_srw_codec},
2556             {0, 0, 0}
2557         };
2558         ret = z_soap_codec(o, &soap_package,
2559                            &hres->content_buf, &hres->content_len,
2560                            soap_handlers);
2561         if (!ret && soap_package->which == Z_SOAP_generic &&
2562             soap_package->u.generic->no == 0)
2563         {
2564             Z_SRW_PDU *sr = soap_package->u.generic->p;
2565             if (sr->which == Z_SRW_searchRetrieve_response)
2566                 handle_srw_response(c, sr->u.response);
2567             else
2568                 ret = -1;
2569         }
2570         else if (!ret && (soap_package->which == Z_SOAP_fault
2571                           || soap_package->which == Z_SOAP_error))
2572         {
2573             set_HTTP_error(c, hres->code,
2574                            soap_package->u.fault->fault_code,
2575                            soap_package->u.fault->fault_string);
2576         }
2577         else
2578             ret = -1;
2579         odr_destroy(o);
2580     }
2581     if (ret)
2582     {
2583         if (hres->code != 200)
2584             set_HTTP_error(c, hres->code, 0, 0);
2585         else
2586             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2587         do_close (c);
2588     }
2589     ZOOM_connection_remove_task(c);
2590     if (!strcmp(hres->version, "1.0"))
2591     {
2592         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
2593         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
2594             do_close(c);
2595     }
2596     else
2597     {
2598         /* HTTP 1.1: only if no close we stay alive .. */
2599         if (connection_head && !strcmp(connection_head, "close"))
2600             do_close(c);
2601     }
2602 }
2603 #endif
2604
2605 static int do_read (ZOOM_connection c)
2606 {
2607     int r;
2608     ZOOM_Event event;
2609
2610     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
2611     ZOOM_connection_put_event (c, event);
2612
2613     yaz_log (LOG_DEBUG, "do_read len=%d", c->len_in);
2614
2615     r = cs_get (c->cs, &c->buf_in, &c->len_in);
2616     if (r == 1)
2617         return 0;
2618     if (r <= 0)
2619     {
2620         if (c->reconnect_ok)
2621         {
2622             do_close (c);
2623             c->reconnect_ok = 0;
2624             yaz_log (LOG_DEBUG, "reconnect read");
2625             c->tasks->running = 0;
2626             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2627         }
2628         else
2629         {
2630             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2631             do_close (c);
2632         }
2633     }
2634     else
2635     {
2636         Z_GDU *gdu;
2637         ZOOM_Event event;
2638
2639         odr_reset (c->odr_in);
2640         odr_setbuf (c->odr_in, c->buf_in, r, 0);
2641         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
2642         ZOOM_connection_put_event (c, event);
2643
2644         if (!z_GDU (c->odr_in, &gdu, 0, 0))
2645         {
2646             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2647             do_close (c);
2648         }
2649         else if (gdu->which == Z_GDU_Z3950)
2650             handle_apdu (c, gdu->u.z3950);
2651         else if (gdu->which == Z_GDU_HTTP_Response)
2652         {
2653 #if HAVE_XML2
2654             handle_http (c, gdu->u.HTTP_Response);
2655 #else
2656             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2657             do_close (c);
2658 #endif
2659         }
2660         c->reconnect_ok = 0;
2661     }
2662     return 1;
2663 }
2664
2665 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
2666 {
2667     int r;
2668     ZOOM_Event event;
2669
2670     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
2671     ZOOM_connection_put_event (c, event);
2672
2673     yaz_log (LOG_DEBUG, "do_write_ex len=%d", len_out);
2674     if ((r=cs_put (c->cs, buf_out, len_out)) < 0)
2675     {
2676         if (c->reconnect_ok)
2677         {
2678             do_close (c);
2679             c->reconnect_ok = 0;
2680             yaz_log (LOG_DEBUG, "reconnect write");
2681             c->tasks->running = 0;
2682             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2683             return zoom_pending;
2684         }
2685         if (c->state == STATE_CONNECTING)
2686             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
2687         else
2688             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2689         do_close (c);
2690         return zoom_complete;
2691     }
2692     else if (r == 1)
2693     {
2694         c->mask = ZOOM_SELECT_EXCEPT;
2695         if (c->cs->io_pending & CS_WANT_WRITE)
2696             c->mask += ZOOM_SELECT_WRITE;
2697         if (c->cs->io_pending & CS_WANT_READ)
2698             c->mask += ZOOM_SELECT_READ;
2699         yaz_log (LOG_DEBUG, "do_write_ex 1 mask=%d", c->mask);
2700     }
2701     else
2702     {
2703         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
2704         yaz_log (LOG_DEBUG, "do_write_ex 2 mask=%d", c->mask);
2705     }
2706     return zoom_pending;
2707 }
2708
2709 static zoom_ret do_write(ZOOM_connection c)
2710 {
2711     return do_write_ex (c, c->buf_out, c->len_out);
2712 }
2713
2714
2715 ZOOM_API(const char *)
2716 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
2717 {
2718     return ZOOM_options_get (c->options, key);
2719 }
2720
2721 ZOOM_API(void)
2722 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
2723                                   const char *val)
2724 {
2725     ZOOM_options_set (c->options, key, val);
2726 }
2727
2728 ZOOM_API(const char *)
2729 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
2730 {
2731     return ZOOM_options_get (r->options, key);
2732 }
2733
2734 ZOOM_API(void)
2735 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
2736                                   const char *val)
2737 {
2738     ZOOM_options_set (r->options, key, val);
2739 }
2740
2741
2742 ZOOM_API(int)
2743 ZOOM_connection_errcode (ZOOM_connection c)
2744 {
2745     return ZOOM_connection_error (c, 0, 0);
2746 }
2747
2748 ZOOM_API(const char *)
2749 ZOOM_connection_errmsg (ZOOM_connection c)
2750 {
2751     const char *msg;
2752     ZOOM_connection_error (c, &msg, 0);
2753     return msg;
2754 }
2755
2756 ZOOM_API(const char *)
2757 ZOOM_connection_addinfo (ZOOM_connection c)
2758 {
2759     const char *addinfo;
2760     ZOOM_connection_error (c, 0, &addinfo);
2761     return addinfo;
2762 }
2763
2764 ZOOM_API(const char *)
2765 ZOOM_diag_str (int error)
2766 {
2767     switch (error)
2768     {
2769     case ZOOM_ERROR_NONE:
2770         return "No error";
2771     case ZOOM_ERROR_CONNECT:
2772         return "Connect failed";
2773     case ZOOM_ERROR_MEMORY:
2774         return "Out of memory";
2775     case ZOOM_ERROR_ENCODE:
2776         return "Encoding failed";
2777     case ZOOM_ERROR_DECODE:
2778         return "Decoding failed";
2779     case ZOOM_ERROR_CONNECTION_LOST:
2780         return "Connection lost";
2781     case ZOOM_ERROR_INIT:
2782         return "Init rejected";
2783     case ZOOM_ERROR_INTERNAL:
2784         return "Internal failure";
2785     case ZOOM_ERROR_TIMEOUT:
2786         return "Timeout";
2787     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
2788         return "Unsupported protocol";
2789     case ZOOM_ERROR_UNSUPPORTED_QUERY:
2790         return "Unsupported query type";
2791     default:
2792         return diagbib1_str (error);
2793     }
2794 }
2795
2796 ZOOM_API(int)
2797 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
2798                          const char **addinfo, const char **diagset)
2799 {
2800     int error = c->error;
2801     if (cp)
2802     {
2803         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
2804             *cp = ZOOM_diag_str(error);
2805         else if (!strcmp(c->diagset, "HTTP"))
2806             *cp = z_HTTP_errmsg(c->error);
2807         else if (!strcmp(c->diagset, "Bib-1"))
2808             *cp = ZOOM_diag_str(error);
2809         else if (!strcmp(c->diagset, "SRW"))
2810             *cp = yaz_diag_srw_str(c->error);
2811         else
2812             *cp = "Unknown error and diagnostic set";
2813     }
2814     if (addinfo)
2815         *addinfo = c->addinfo ? c->addinfo : "";
2816     if (diagset)
2817         *diagset = c->diagset ? c->diagset : "";
2818     return c->error;
2819 }
2820
2821 ZOOM_API(int)
2822 ZOOM_connection_error (ZOOM_connection c, const char **cp,
2823                        const char **addinfo)
2824 {
2825     return ZOOM_connection_error_x(c, cp, addinfo, 0);
2826 }
2827
2828 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
2829 {
2830     ZOOM_Event event = 0;
2831     int r = cs_look(c->cs);
2832     yaz_log (LOG_DEBUG, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
2833              c, mask, r);
2834
2835     if (r == CS_NONE)
2836     {
2837         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
2838         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
2839         do_close (c);
2840         ZOOM_connection_put_event (c, event);
2841     }
2842     else if (r == CS_CONNECT)
2843     {
2844         int ret;
2845         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
2846
2847         ret = cs_rcvconnect (c->cs);
2848         yaz_log (LOG_DEBUG, "cs_rcvconnect returned %d", ret);
2849         if (ret == 1)
2850         {
2851             c->mask = ZOOM_SELECT_EXCEPT;
2852             if (c->cs->io_pending & CS_WANT_WRITE)
2853                 c->mask += ZOOM_SELECT_WRITE;
2854             if (c->cs->io_pending & CS_WANT_READ)
2855                 c->mask += ZOOM_SELECT_READ;
2856             ZOOM_connection_put_event (c, event);
2857         }
2858         else if (ret == 0)
2859         {
2860             ZOOM_connection_put_event (c, event);
2861             if (c->proto == PROTO_Z3950)
2862                 ZOOM_connection_send_init(c);
2863             else
2864             {
2865                 /* no init request for SRW .. */
2866                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2867                 ZOOM_connection_remove_task (c);
2868                 c->mask = 0;
2869                 ZOOM_connection_exec_task (c);
2870             }
2871             c->state = STATE_ESTABLISHED;
2872         }
2873         else
2874         {
2875             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
2876             do_close (c);
2877             ZOOM_connection_put_event (c, event);
2878         }
2879     }
2880     else
2881     {
2882         if (mask & ZOOM_SELECT_READ)
2883             do_read (c);
2884         if (c->cs && (mask & ZOOM_SELECT_WRITE))
2885             do_write (c);
2886     }
2887     return 1;
2888 }
2889
2890 ZOOM_API(int)
2891 ZOOM_connection_last_event(ZOOM_connection cs)
2892 {
2893     if (!cs)
2894         return ZOOM_EVENT_NONE;
2895     return cs->last_event;
2896 }
2897
2898 ZOOM_API(int)
2899 ZOOM_event (int no, ZOOM_connection *cs)
2900 {
2901     int timeout = 5000;
2902 #if HAVE_SYS_POLL_H
2903     struct pollfd pollfds[1024];
2904     ZOOM_connection poll_cs[1024];
2905 #else
2906     struct timeval tv;
2907     fd_set input, output, except;
2908 #endif
2909     int i, r, nfds;
2910     int max_fd = 0;
2911
2912     for (i = 0; i<no; i++)
2913     {
2914         ZOOM_connection c = cs[i];
2915         ZOOM_Event event;
2916         if (c && (event = ZOOM_connection_get_event(c)))
2917         {
2918             ZOOM_Event_destroy (event);
2919             return i+1;
2920         }
2921     }
2922     for (i = 0; i<no; i++)
2923     {
2924         ZOOM_connection c = cs[i];
2925         ZOOM_Event event;
2926         if (c && ZOOM_connection_exec_task (c))
2927         {
2928             if ((event = ZOOM_connection_get_event(c)))
2929             {
2930                 ZOOM_Event_destroy (event);
2931                 return i+1;
2932             }
2933         }
2934     }
2935 #if HAVE_SYS_POLL_H
2936
2937 #else
2938     FD_ZERO (&input);
2939     FD_ZERO (&output);
2940     FD_ZERO (&except);
2941 #endif
2942     nfds = 0;
2943     for (i = 0; i<no; i++)
2944     {
2945         ZOOM_connection c = cs[i];
2946         int fd, mask;
2947         int this_timeout;
2948
2949         if (!c)
2950             continue;
2951         fd = z3950_connection_socket(c);
2952         mask = z3950_connection_mask(c);
2953
2954         if (fd == -1)
2955             continue;
2956         if (max_fd < fd)
2957             max_fd = fd;
2958
2959         this_timeout = ZOOM_options_get_int (c->options, "timeout", -1);
2960         if (this_timeout != -1 && this_timeout < timeout)
2961             timeout = this_timeout;
2962 #if HAVE_SYS_POLL_H
2963         if (mask)
2964         {
2965             short poll_events = 0;
2966
2967             if (mask & ZOOM_SELECT_READ)
2968                 poll_events += POLLIN;
2969             if (mask & ZOOM_SELECT_WRITE)
2970                 poll_events += POLLOUT;
2971             if (mask & ZOOM_SELECT_EXCEPT)
2972                 poll_events += POLLERR;
2973             pollfds[nfds].fd = fd;
2974             pollfds[nfds].events = poll_events;
2975             pollfds[nfds].revents = 0;
2976             poll_cs[nfds] = c;
2977             nfds++;
2978         }
2979 #else
2980         if (mask & ZOOM_SELECT_READ)
2981         {
2982             FD_SET (fd, &input);
2983             nfds++;
2984         }
2985         if (mask & ZOOM_SELECT_WRITE)
2986         {
2987             FD_SET (fd, &output);
2988             nfds++;
2989         }
2990         if (mask & ZOOM_SELECT_EXCEPT)
2991         {
2992             FD_SET (fd, &except);
2993             nfds++;
2994         }
2995 #endif
2996     }
2997     if (timeout >= 5000)
2998         timeout = 30;
2999
3000     if (!nfds)
3001         return 0;
3002
3003 #if HAVE_SYS_POLL_H
3004     r = poll (pollfds, nfds, timeout * 1000);
3005     for (i = 0; i<nfds; i++)
3006     {
3007         ZOOM_connection c = poll_cs[i];
3008         if (r && c->mask)
3009         {
3010             int mask = 0;
3011             if (pollfds[i].revents & POLLIN)
3012                 mask += ZOOM_SELECT_READ;
3013             if (pollfds[i].revents & POLLOUT)
3014                 mask += ZOOM_SELECT_WRITE;
3015             if (pollfds[i].revents & POLLERR)
3016                 mask += ZOOM_SELECT_EXCEPT;
3017             if (mask)
3018                 ZOOM_connection_do_io(c, mask);
3019         }
3020         else if (r == 0 && c->mask)
3021         {
3022             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3023             /* timeout and this connection was waiting */
3024             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3025             do_close (c);
3026             ZOOM_connection_put_event(c, event);
3027         }
3028     }
3029 #else
3030     tv.tv_sec = timeout;
3031     tv.tv_usec = 0;
3032     yaz_log (LOG_DEBUG, "select start");
3033     r = select (max_fd+1, &input, &output, &except, &tv);
3034     yaz_log (LOG_DEBUG, "select stop, returned r=%d", r);
3035     for (i = 0; i<no; i++)
3036     {
3037         ZOOM_connection c = cs[i];
3038         int fd, mask;
3039
3040         if (!c)
3041             continue;
3042         fd = z3950_connection_socket(c);
3043         mask = 0;
3044         if (r && c->mask)
3045         {
3046             /* no timeout and real socket */
3047             if (FD_ISSET(fd, &input))
3048                 mask += ZOOM_SELECT_READ;
3049             if (FD_ISSET(fd, &output))
3050                 mask += ZOOM_SELECT_WRITE;
3051             if (FD_ISSET(fd, &except))
3052                 mask += ZOOM_SELECT_EXCEPT;
3053             if (mask)
3054                 ZOOM_connection_do_io(c, mask);
3055         }
3056         if (r == 0 && c->mask)
3057         {
3058             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3059             /* timeout and this connection was waiting */
3060             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3061             do_close (c);
3062             yaz_log (LOG_DEBUG, "timeout");
3063             ZOOM_connection_put_event(c, event);
3064         }
3065     }
3066 #endif
3067     for (i = 0; i<no; i++)
3068     {
3069         ZOOM_connection c = cs[i];
3070         ZOOM_Event event;
3071         if (c && (event = ZOOM_connection_get_event(c)))
3072         {
3073             ZOOM_Event_destroy (event);
3074             return i+1;
3075         }
3076     }
3077     return 0;
3078 }