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 1.37 2003-06-02 12:53:28 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         {
 603             if (rc->rec.wrbuf_marc)
 604                 wrbuf_free (rc->rec.wrbuf_marc, 1);
 605             if (rc->rec.wrbuf_iconv)
 606                 wrbuf_free (rc->rec.wrbuf_iconv, 1);
 607         }
 608         if (r->connection)
 609         {
 610             /* remove ourselves from the resultsets in connection */
 611             ZOOM_resultset *rp = &r->connection->resultsets;
 612             while (1)
 613             {
 614                 assert (*rp);   /* we must be in this list!! */
 615                 if (*rp == r)
 616                 {   /* OK, we're here - take us out of it */
 617                     *rp = (*rp)->next;
 618                     break;
 619                 }
 620                 rp = &(*rp)->next;
 621             }
 622         }
 623         ZOOM_query_destroy (r->query);
 624         ZOOM_options_destroy (r->options);
 625         odr_destroy (r->odr);
 626         xfree (r->setname);
 627         xfree (r->schema);
 628         xfree (r);
 629     }
 630 }
 631
 632 ZOOM_API(size_t)
 633 ZOOM_resultset_size (ZOOM_resultset r)
 634 {
 635     return r->size;
 636 }
 637
 638 static void do_close (ZOOM_connection c)
 639 {
 640     if (c->cs)
 641         cs_close(c->cs);
 642     c->cs = 0;
 643     c->mask = 0;
 644     c->state = STATE_IDLE;
 645 }
 646
 647 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 648                                      int force_sync, int start, int count)
 649 {
 650     ZOOM_task task;
 651     ZOOM_connection c;
 652     const char *cp;
 653
 654     if (!r)
 655         return;
 656     c = r->connection;
 657     if (!c)
 658         return;
 659
 660     if (c->host_port && c->proto == PROTO_HTTP)
 661     {
 662         if (!c->cs)
 663         {
 664             yaz_log(LOG_DEBUG, "NO COMSTACK");
 665             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 666         }
 667         else
 668         {
 669             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 670             c->reconnect_ok = 1;
 671         }
 672     }
 673     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 674     task->u.retrieve.resultset = r;
 675     task->u.retrieve.start = start;
 676     task->u.retrieve.count = count;
 677
 678     cp = ZOOM_options_get (r->options, "schema");
 679     if (cp)
 680     {
 681         if (!r->schema || strcmp(r->schema, cp))
 682         {
 683             xfree(r->schema);
 684             r->schema = xstrdup(cp);
 685         }
 686     }
 687
 688     ZOOM_resultset_addref (r);
 689
 690     if (!r->connection->async || force_sync)
 691         while (r->connection && ZOOM_event (1, &r->connection))
 692             ;
 693 }
 694
 695 ZOOM_API(void)
 696 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 697                         size_t start, size_t count)
 698 {
 699     int force_present = 0;
 700
 701     if (!r)
 702         return ;
 703     if (count && recs)
 704         force_present = 1;
 705     ZOOM_resultset_retrieve (r, force_present, start, count);
 706     if (force_present)
 707     {
 708         size_t i;
 709         for (i = 0; i< count; i++)
 710             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 711     }
 712 }
 713
 714 static zoom_ret do_connect (ZOOM_connection c)
 715 {
 716     void *add;
 717     const char *effective_host;
 718
 719     if (c->proxy)
 720         effective_host = c->proxy;
 721     else
 722         effective_host = c->host_port;
 723
 724     yaz_log (LOG_DEBUG, "do_connect host=%s", effective_host);
 725
 726     assert (!c->cs);
 727     c->cs = cs_create_host (effective_host, 0, &add);
 728
 729     if (c->cs && c->cs->protocol == PROTO_HTTP)
 730     {
 731 #if HAVE_XML2
 732         const char *path = 0;
 733
 734         c->proto = PROTO_HTTP;
 735         cs_get_host_args(c->host_port, &path);
 736         xfree(c->path);
 737         c->path = xmalloc(strlen(path)+2);
 738         c->path[0] = '/';
 739         strcpy (c->path+1, path);
 740 #else
 741         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 742         do_close(c);
 743         return zoom_complete;
 744 #endif
 745     }
 746     if (c->cs)
 747     {
 748         int ret = cs_connect (c->cs, add);
 749         if (ret == 0)
 750         {
 751             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 752             ZOOM_connection_put_event(c, event);
 753             if (c->proto == PROTO_Z3950)
 754                 ZOOM_connection_send_init(c);
 755             else
 756             {
 757                 /* no init request for SRW .. */
 758                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 759                 ZOOM_connection_remove_task (c);
 760                 c->mask = 0;
 761                 ZOOM_connection_exec_task (c);
 762             }
 763             c->state = STATE_ESTABLISHED;
 764             return zoom_pending;
 765         }
 766         else if (ret > 0)
 767         {
 768             c->state = STATE_CONNECTING;
 769             c->mask = ZOOM_SELECT_EXCEPT;
 770             if (c->cs->io_pending & CS_WANT_WRITE)
 771                 c->mask += ZOOM_SELECT_WRITE;
 772             if (c->cs->io_pending & CS_WANT_READ)
 773                 c->mask += ZOOM_SELECT_READ;
 774             return zoom_pending;
 775         }
 776     }
 777     c->state = STATE_IDLE;
 778     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
 779     return zoom_complete;
 780 }
 781
 782 int z3950_connection_socket(ZOOM_connection c)
 783 {
 784     if (c->cs)
 785         return cs_fileno(c->cs);
 786     return -1;
 787 }
 788
 789 int z3950_connection_mask(ZOOM_connection c)
 790 {
 791     if (c->cs)
 792         return c->mask;
 793     return 0;
 794 }
 795
 796 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 797 {
 798     int i;
 799     for (i = 0; i<200; i++)
 800     {
 801         size_t len;
 802         Z_OtherInformation **oi;
 803         char buf[80];
 804         const char *val;
 805         const char *cp;
 806         int oidval;
 807
 808         sprintf (buf, "otherInfo%d", i);
 809         val = ZOOM_options_get (c->options, buf);
 810         if (!val)
 811             break;
 812         cp = strchr (val, ':');
 813         if (!cp)
 814             continue;
 815         len = cp - val;
 816         if (len >= sizeof(buf))
 817             len = sizeof(buf)-1;
 818         memcpy (buf, val, len);
 819         buf[len] = '\0';
 820         oidval = oid_getvalbyname (buf);
 821         if (oidval == VAL_NONE)
 822             continue;
 823
 824         yaz_oi_APDU(a, &oi);
 825         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 826     }
 827 }
 828
 829 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 830 {
 831     assert (a);
 832     if (c->cookie_out)
 833     {
 834         Z_OtherInformation **oi;
 835         yaz_oi_APDU(a, &oi);
 836         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 837     }
 838     if (c->client_IP)
 839     {
 840         Z_OtherInformation **oi;
 841         yaz_oi_APDU(a, &oi);
 842         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 843     }
 844     otherInfo_attach (c, a, out);
 845     if (!z_APDU(out, &a, 0, 0))
 846     {
 847         FILE *outf = fopen("/tmp/apdu.txt", "a");
 848         if (a && outf)
 849         {
 850             ODR odr_pr = odr_createmem(ODR_PRINT);
 851             fprintf (outf, "a=%p\n", a);
 852             odr_setprint(odr_pr, outf);
 853             z_APDU(odr_pr, &a, 0, 0);
 854             odr_destroy(odr_pr);
 855         }
 856         yaz_log (LOG_DEBUG, "encoding failed");
 857         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
 858         odr_reset(out);
 859         return -1;
 860     }
 861
 862     return 0;
 863 }
 864
 865 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
 866 {
 867     ZOOM_Event event;
 868     assert (a);
 869     if (encode_APDU(c, a, c->odr_out))
 870         return zoom_complete;
 871     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
 872     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
 873     ZOOM_connection_put_event (c, event);
 874     odr_reset(c->odr_out);
 875     return do_write (c);
 876 }
 877
 878 /* returns 1 if PDU was sent OK (still pending )
 879            0 if PDU was not sent OK (nothing to wait for)
 880 */
 881
 882 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
 883 {
 884     const char *impname;
 885     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
 886     Z_InitRequest *ireq = apdu->u.initRequest;
 887     Z_IdAuthentication *auth = (Z_IdAuthentication *)
 888         odr_malloc(c->odr_out, sizeof(*auth));
 889     const char *auth_groupId = ZOOM_options_get (c->options, "group");
 890     const char *auth_userId = ZOOM_options_get (c->options, "user");
 891     const char *auth_password = ZOOM_options_get (c->options, "pass");
 892
 893     ODR_MASK_SET(ireq->options, Z_Options_search);
 894     ODR_MASK_SET(ireq->options, Z_Options_present);
 895     ODR_MASK_SET(ireq->options, Z_Options_scan);
 896     ODR_MASK_SET(ireq->options, Z_Options_sort);
 897     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
 898     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
 899
 900     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
 901     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
 902     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
 903
 904     impname = ZOOM_options_get (c->options, "implementationName");
 905     ireq->implementationName =
 906         (char *) odr_malloc (c->odr_out, 15 + (impname ? strlen(impname) : 0));
 907     strcpy (ireq->implementationName, "");
 908     if (impname)
 909     {
 910         strcat (ireq->implementationName, impname);
 911         strcat (ireq->implementationName, "/");
 912     }
 913     strcat (ireq->implementationName, "ZOOM-C/YAZ");
 914
 915     *ireq->maximumRecordSize =
 916         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
 917     *ireq->preferredMessageSize =
 918         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
 919
 920     if (auth_groupId || auth_password)
 921     {
 922         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
 923         int i = 0;
 924         pass->groupId = 0;
 925         if (auth_groupId && *auth_groupId)
 926         {
 927             pass->groupId = (char *)
 928                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
 929             strcpy(pass->groupId, auth_groupId);
 930             i++;
 931         }
 932         pass->userId = 0;
 933         if (auth_userId && *auth_userId)
 934         {
 935             pass->userId = (char *)
 936                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
 937             strcpy(pass->userId, auth_userId);
 938             i++;
 939         }
 940         pass->password = 0;
 941         if (auth_password && *auth_password)
 942         {
 943             pass->password = (char *)
 944                 odr_malloc(c->odr_out, strlen(auth_password)+1);
 945             strcpy(pass->password, auth_password);
 946             i++;
 947         }
 948         if (i)
 949         {
 950             auth->which = Z_IdAuthentication_idPass;
 951             auth->u.idPass = pass;
 952             ireq->idAuthentication = auth;
 953         }
 954     }
 955     else if (auth_userId)
 956     {
 957         auth->which = Z_IdAuthentication_open;
 958         auth->u.open = (char *)
 959             odr_malloc(c->odr_out, strlen(auth_userId)+1);
 960         strcpy(auth->u.open, auth_userId);
 961         ireq->idAuthentication = auth;
 962     }
 963     if (c->proxy)
 964         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
 965                                  VAL_PROXY, 1, c->host_port);
 966     if (c->charset||c->lang)
 967     {
 968         Z_OtherInformation **oi;
 969         Z_OtherInformationUnit *oi_unit;
 970
 971         yaz_oi_APDU(apdu, &oi);
 972
 973         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
 974         {
 975             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
 976
 977             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
 978             oi_unit->information.externallyDefinedInfo =
 979                 yaz_set_proposal_charneg
 980                 (c->odr_out,
 981                  (const char **)&c->charset, (c->charset) ? 1:0,
 982                  (const char **)&c->lang, (c->lang) ? 1:0, 1);
 983         }
 984     }
 985     assert (apdu);
 986     return send_APDU (c, apdu);
 987 }
 988
 989 #if HAVE_XML2
 990 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
 991 {
 992     char ctype[50];
 993     Z_SOAP_Handler h[2] = {
 994         {"http://www.loc.gov/zing/srw/v1.0/", 0, (Z_SOAP_fun) yaz_srw_codec},
 995         {0, 0, 0}
 996     };
 997     ODR o = odr_createmem(ODR_ENCODE);
 998     int ret;
 999     Z_SOAP *p = odr_malloc(o, sizeof(*p));
1000     Z_GDU *gdu;
1001     ZOOM_Event event;
1002
1003     gdu = z_get_HTTP_Request(c->odr_out);
1004     gdu->u.HTTP_Request->path = c->path;
1005
1006     if (c->host_port)
1007     {
1008         const char *cp0 = strstr(c->host_port, "://");
1009         const char *cp1 = 0;
1010         if (cp0)
1011             cp0 = cp0+3;
1012         else
1013             cp0 = c->host_port;
1014
1015         cp1 = strchr(cp0, '/');
1016         if (!cp1)
1017             cp1 = cp0+strlen(cp0);
1018
1019         if (cp0 && cp1)
1020         {
1021             char *h = odr_malloc(c->odr_out, cp1 - cp0 + 1);
1022             memcpy (h, cp0, cp1 - cp0);
1023             h[cp1-cp0] = '\0';
1024             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1025                               "host", h);
1026         }
1027     }
1028
1029     strcpy(ctype, "text/xml");
1030     if (c->charset && strlen(c->charset) < 20)
1031     {
1032         strcat(ctype, "; charset=");
1033         strcat(ctype, c->charset);
1034     }
1035     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1036                       "Content-Type", ctype);
1037     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1038                       "SOAPAction", "\"\"");
1039     p->which = Z_SOAP_generic;
1040     p->u.generic = odr_malloc(o, sizeof(*p->u.generic));
1041     p->u.generic->no = 0;
1042     p->u.generic->ns = 0;
1043     p->u.generic->p = sr;
1044     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1045
1046     ret = z_soap_codec_enc(o, &p,
1047                            &gdu->u.HTTP_Request->content_buf,
1048                            &gdu->u.HTTP_Request->content_len, h,
1049                            c->charset);
1050
1051     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1052         return zoom_complete;
1053     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1054
1055     odr_destroy(o);
1056
1057     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1058     ZOOM_connection_put_event (c, event);
1059     odr_reset(c->odr_out);
1060     return do_write (c);
1061 }
1062 #endif
1063
1064 #if HAVE_XML2
1065 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1066 {
1067     int i;
1068     ZOOM_resultset resultset = 0;
1069     Z_SRW_PDU *sr = 0;
1070     const char *recordPacking = 0;
1071
1072     if (c->error)                  /* don't continue on error */
1073         return zoom_complete;
1074     assert (c->tasks);
1075     if (c->tasks->which == ZOOM_TASK_SEARCH)
1076     {
1077         resultset = c->tasks->u.search.resultset;
1078         resultset->setname = xstrdup ("default");
1079         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1080     }
1081     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1082     {
1083         resultset = c->tasks->u.retrieve.resultset;
1084
1085         resultset->start = c->tasks->u.retrieve.start;
1086         resultset->count = c->tasks->u.retrieve.count;
1087
1088         if (resultset->start >= resultset->size)
1089             return zoom_complete;
1090         if (resultset->start + resultset->count > resultset->size)
1091             resultset->count = resultset->size - resultset->start;
1092
1093         for (i = 0; i<resultset->count; i++)
1094         {
1095             ZOOM_record rec =
1096                 record_cache_lookup (resultset, i + resultset->start);
1097             if (!rec)
1098                 break;
1099         }
1100         if (i == resultset->count)
1101             return zoom_complete;
1102     }
1103     assert(resultset->query);
1104
1105     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1106
1107     if (resultset->query->z_query->which == Z_Query_type_104
1108         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1109     {
1110
1111         sr->u.request->query_type = Z_SRW_query_type_cql;
1112         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1113     }
1114     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1115              resultset->query->z_query->u.type_1)
1116     {
1117         sr->u.request->query_type = Z_SRW_query_type_pqf;
1118         sr->u.request->query.pqf = resultset->query->query_string;
1119     }
1120     else
1121     {
1122         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1123         return zoom_complete;
1124     }
1125     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1126     sr->u.request->maximumRecords = odr_intdup (
1127         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1128     sr->u.request->recordSchema = resultset->schema;
1129
1130     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1131
1132     if (recordPacking)
1133         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1134
1135     return send_srw(c, sr);
1136 }
1137 #else
1138 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1139 {
1140     return zoom_complete;
1141 }
1142 #endif
1143
1144 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1145 {
1146     ZOOM_resultset r;
1147     int lslb, ssub, mspn;
1148     const char *syntax;
1149     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1150     Z_SearchRequest *search_req = apdu->u.searchRequest;
1151     const char *elementSetName;
1152     const char *smallSetElementSetName;
1153     const char *mediumSetElementSetName;
1154
1155     assert (c->tasks);
1156     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1157
1158     r = c->tasks->u.search.resultset;
1159
1160     elementSetName =
1161         ZOOM_options_get (r->options, "elementSetName");
1162     smallSetElementSetName  =
1163         ZOOM_options_get (r->options, "smallSetElementSetName");
1164     mediumSetElementSetName =
1165         ZOOM_options_get (r->options, "mediumSetElementSetName");
1166
1167     if (!smallSetElementSetName)
1168         smallSetElementSetName = elementSetName;
1169
1170     if (!mediumSetElementSetName)
1171         mediumSetElementSetName = elementSetName;
1172
1173     assert (r);
1174     assert (r->query);
1175
1176     /* prepare query for the search request */
1177     search_req->query = r->query->z_query;
1178
1179     search_req->databaseNames =
1180         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1181
1182     /* get syntax (no need to provide unless piggyback is in effect) */
1183     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1184
1185     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1186     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1187     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1188     if (lslb != -1 && ssub != -1 && mspn != -1)
1189     {
1190         /* So're a Z39.50 expert? Let's hope you don't do sort */
1191         *search_req->largeSetLowerBound = lslb;
1192         *search_req->smallSetUpperBound = ssub;
1193         *search_req->mediumSetPresentNumber = mspn;
1194     }
1195     else if (r->start == 0 && r->count > 0
1196              && r->piggyback && !r->r_sort_spec && !r->schema)
1197     {
1198         /* Regular piggyback - do it unless we're going to do sort */
1199         *search_req->largeSetLowerBound = 2000000000;
1200         *search_req->smallSetUpperBound = 0;
1201         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1202         smallSetElementSetName = 0;
1203     }
1204     else
1205     {
1206         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1207         smallSetElementSetName = 0;
1208         mediumSetElementSetName = 0;
1209         syntax = 0;
1210     }
1211     if (smallSetElementSetName && *smallSetElementSetName)
1212     {
1213         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1214             odr_malloc (c->odr_out, sizeof(*esn));
1215
1216         esn->which = Z_ElementSetNames_generic;
1217         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1218         search_req->smallSetElementSetNames = esn;
1219     }
1220     if (mediumSetElementSetName && *mediumSetElementSetName)
1221     {
1222         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1223             odr_malloc (c->odr_out, sizeof(*esn));
1224
1225         esn->which = Z_ElementSetNames_generic;
1226         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1227         search_req->mediumSetElementSetNames = esn;
1228     }
1229     if (syntax)
1230         search_req->preferredRecordSyntax =
1231             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1232
1233     if (!r->setname)
1234     {
1235         if (c->support_named_resultsets)
1236         {
1237             char setname[14];
1238             int ord;
1239             /* find the lowest unused ordinal so that we re-use
1240                result sets on the server. */
1241             for (ord = 1; ; ord++)
1242             {
1243                 ZOOM_resultset rp;
1244                 sprintf (setname, "%d", ord);
1245                 for (rp = c->resultsets; rp; rp = rp->next)
1246                     if (rp->setname && !strcmp (rp->setname, setname))
1247                         break;
1248                 if (!rp)
1249                     break;
1250             }
1251             r->setname = xstrdup (setname);
1252             yaz_log (LOG_DEBUG, "allocating set %s", r->setname);
1253         }
1254         else
1255             r->setname = xstrdup ("default");
1256         ZOOM_options_set (r->options, "setname", r->setname);
1257     }
1258     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1259     /* send search request */
1260     return send_APDU (c, apdu);
1261 }
1262
1263 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
1264 {
1265     int oclass;
1266     Z_DefaultDiagFormat *r;
1267     char *addinfo = 0;
1268
1269     xfree (c->addinfo);
1270     c->addinfo = 0;
1271     if (p->which != Z_DiagRec_defaultFormat)
1272     {
1273         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1274         return;
1275     }
1276     r = p->u.defaultFormat;
1277     switch (r->which)
1278     {
1279     case Z_DefaultDiagFormat_v2Addinfo:
1280         addinfo = r->u.v2Addinfo;
1281         break;
1282     case Z_DefaultDiagFormat_v3Addinfo:
1283         addinfo = r->u.v3Addinfo;
1284         break;
1285     }
1286     set_dset_error(c, *r->condition,
1287                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1288                    addinfo, 0);
1289 }
1290
1291 ZOOM_API(ZOOM_record)
1292 ZOOM_record_clone (ZOOM_record srec)
1293 {
1294     char *buf;
1295     int size;
1296     ODR odr_enc;
1297     ZOOM_record nrec;
1298
1299     odr_enc = odr_createmem(ODR_ENCODE);
1300     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1301         return 0;
1302     buf = odr_getbuf (odr_enc, &size, 0);
1303
1304     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1305     nrec->odr = odr_createmem(ODR_DECODE);
1306     nrec->wrbuf_marc = 0;
1307     nrec->wrbuf_iconv = 0;
1308     odr_setbuf (nrec->odr, buf, size, 0);
1309     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1310
1311     odr_destroy (odr_enc);
1312     return nrec;
1313 }
1314
1315 ZOOM_API(ZOOM_record)
1316 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1317 {
1318     return record_cache_lookup (s, pos);
1319 }
1320
1321 ZOOM_API(ZOOM_record)
1322 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1323 {
1324     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1325
1326     if (!rec)
1327     {
1328         ZOOM_resultset_retrieve (r, 1, pos, 1);
1329         rec = ZOOM_resultset_record_immediate (r, pos);
1330     }
1331     return rec;
1332 }
1333
1334 ZOOM_API(void)
1335 ZOOM_record_destroy (ZOOM_record rec)
1336 {
1337     if (!rec)
1338         return;
1339     if (rec->wrbuf_marc)
1340         wrbuf_free (rec->wrbuf_marc, 1);
1341     odr_destroy (rec->odr);
1342     xfree (rec);
1343 }
1344
1345 static const char *record_iconv_return(ZOOM_record rec, int *len,
1346                                        const char *buf, int sz,
1347                                        const char *record_charset)
1348 {
1349     char to[40];
1350     char from[40];
1351     yaz_iconv_t cd = 0;
1352
1353     *from = '\0';
1354     strcpy(to, "UTF-8");
1355     if (record_charset && *record_charset)
1356     {
1357         /* Use "from,to" or just "from" */
1358         const char *cp =strchr(record_charset, ',');
1359         int clen = strlen(record_charset);
1360         if (cp && cp[1])
1361         {
1362             strncpy( to, cp+1, sizeof(to)-1);
1363             to[sizeof(to)-1] = '\0';
1364             clen = cp - record_charset;
1365         }
1366         if (clen > sizeof(from)-1)
1367             clen = sizeof(from)-1;
1368
1369         if (clen)
1370             strncpy(from, record_charset, clen);
1371         from[clen] = '\0';
1372     }
1373
1374     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1375     {
1376         char outbuf[12];
1377         size_t inbytesleft = sz;
1378         const char *inp = buf;
1379
1380         if (!rec->wrbuf_iconv)
1381             rec->wrbuf_iconv = wrbuf_alloc();
1382
1383         wrbuf_rewind(rec->wrbuf_iconv);
1384
1385         while (inbytesleft)
1386         {
1387             size_t outbytesleft = sizeof(outbuf);
1388             char *outp = outbuf;
1389             size_t r = yaz_iconv (cd, (char**) &inp,
1390                                   &inbytesleft,
1391                                   &outp, &outbytesleft);
1392             if (r == (size_t) (-1))
1393             {
1394                 int e = yaz_iconv_error(cd);
1395                 if (e != YAZ_ICONV_E2BIG)
1396                     break;
1397             }
1398             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1399         }
1400         wrbuf_puts(rec->wrbuf_iconv, "");
1401         buf = wrbuf_buf(rec->wrbuf_iconv);
1402         sz = wrbuf_len(rec->wrbuf_iconv);
1403         yaz_iconv_close(cd);
1404     }
1405     if (len)
1406         *len = sz;
1407     return buf;
1408 }
1409
1410 ZOOM_API(const char *)
1411 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1412 {
1413     char type[40];
1414     char charset[40];
1415     const char *cp;
1416     int i;
1417     Z_NamePlusRecord *npr;
1418
1419     if (len)
1420         *len = 0; /* default return */
1421
1422     if (!rec)
1423         return 0;
1424     npr = rec->npr;
1425     if (!npr)
1426         return 0;
1427
1428     cp = type_spec;
1429     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1430     {
1431         if (cp[i] == ';' || cp[i] == ' ')
1432             break;
1433         type[i] = cp[i];
1434     }
1435     type[i] = '\0';
1436     charset[0] = '\0';
1437     if (type_spec[i] == ';')
1438     {
1439         i++;
1440         while (type_spec[i] == ' ')
1441             i++;
1442         if (!strncmp(type_spec+i, "charset=", 8))
1443         {
1444             cp = type_spec+i+8;
1445             for (i = 0; cp[i] && i < sizeof(charset)-1; i++)
1446             {
1447                 if (cp[i] == ';' || cp[i] == ' ')
1448                     break;
1449                 charset[i] = cp[i];
1450             }
1451             charset[i] = '\0';
1452         }
1453     }
1454
1455     if (!strcmp (type, "database"))
1456     {
1457         if (len)
1458             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1459         return npr->databaseName;
1460     }
1461     else if (!strcmp (type, "syntax"))
1462     {
1463         const char *desc = 0;
1464         if (npr->which == Z_NamePlusRecord_databaseRecord)
1465         {
1466             Z_External *r = (Z_External *) npr->u.databaseRecord;
1467             oident *ent = oid_getentbyoid(r->direct_reference);
1468             if (ent)
1469                 desc = ent->desc;
1470         }
1471         if (!desc)
1472             desc = "none";
1473         if (len)
1474             *len = strlen(desc);
1475         return desc;
1476     }
1477     else if (!strcmp (type, "render") &&
1478              npr->which == Z_NamePlusRecord_databaseRecord)
1479     {
1480         Z_External *r = (Z_External *) npr->u.databaseRecord;
1481         oident *ent = oid_getentbyoid(r->direct_reference);
1482
1483         if (r->which == Z_External_sutrs)
1484             return record_iconv_return(rec, len,
1485                                        r->u.sutrs->buf, r->u.sutrs->len,
1486                                        charset);
1487         else if (r->which == Z_External_octet)
1488         {
1489             yaz_marc_t mt;
1490             switch (ent->value)
1491             {
1492             case VAL_SOIF:
1493             case VAL_HTML:
1494             case VAL_SUTRS:
1495                 break;
1496             case VAL_TEXT_XML:
1497             case VAL_APPLICATION_XML:
1498                 break;
1499             default:
1500                 if (!rec->wrbuf_marc)
1501                     rec->wrbuf_marc = wrbuf_alloc();
1502
1503                 mt = yaz_marc_create();
1504                 wrbuf_rewind (rec->wrbuf_marc);
1505                 if (yaz_marc_decode_wrbuf (
1506                         mt, (const char *) r->u.octet_aligned->buf,
1507                         r->u.octet_aligned->len,
1508                         rec->wrbuf_marc) > 0)
1509                 {
1510                     yaz_marc_destroy(mt);
1511                     return record_iconv_return(rec, len,
1512                                                wrbuf_buf(rec->wrbuf_marc),
1513                                                wrbuf_len(rec->wrbuf_marc),
1514                                                charset);
1515                 }
1516                 yaz_marc_destroy(mt);
1517             }
1518             return record_iconv_return(rec, len,
1519                                        (const char *) r->u.octet_aligned->buf,
1520                                        r->u.octet_aligned->len,
1521                                        charset);
1522         }
1523         else if (r->which == Z_External_grs1)
1524         {
1525             if (!rec->wrbuf_marc)
1526                 rec->wrbuf_marc = wrbuf_alloc();
1527             wrbuf_rewind (rec->wrbuf_marc);
1528             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1529             return record_iconv_return(rec, len,
1530                                        wrbuf_buf(rec->wrbuf_marc),
1531                                        wrbuf_len(rec->wrbuf_marc),
1532                                        charset);
1533         }
1534         return 0;
1535     }
1536     else if (npr->which == Z_NamePlusRecord_databaseRecord &&
1537              (!strcmp (type, "xml") || !strcmp(type, "oai")))
1538     {
1539         Z_External *r = (Z_External *) npr->u.databaseRecord;
1540         oident *ent = oid_getentbyoid(r->direct_reference);
1541
1542         if (r->which == Z_External_sutrs)
1543             return record_iconv_return(rec, len,
1544                                        (const char *) r->u.sutrs->buf,
1545                                        r->u.sutrs->len,
1546                                        charset);
1547         else if (r->which == Z_External_octet)
1548         {
1549             yaz_marc_t mt;
1550             int marc_decode_type = YAZ_MARC_MARCXML;
1551
1552             if (!strcmp(type, "oai"))
1553                 marc_decode_type = YAZ_MARC_OAIMARC;
1554             switch (ent->value)
1555             {
1556             case VAL_SOIF:
1557             case VAL_HTML:
1558             case VAL_SUTRS:
1559                 break;
1560             case VAL_TEXT_XML:
1561             case VAL_APPLICATION_XML:
1562                 break;
1563             default:
1564                 if (!rec->wrbuf_marc)
1565                     rec->wrbuf_marc = wrbuf_alloc();
1566                 wrbuf_rewind (rec->wrbuf_marc);
1567                 mt = yaz_marc_create();
1568
1569                 yaz_marc_xml(mt, YAZ_MARC_MARCXML);
1570                 if (yaz_marc_decode_wrbuf (
1571                         mt, (const char *) r->u.octet_aligned->buf,
1572                         r->u.octet_aligned->len,
1573                         rec->wrbuf_marc) > 0)
1574                 {
1575                     yaz_marc_destroy(mt);
1576                     return record_iconv_return(rec, len,
1577                                                wrbuf_buf(rec->wrbuf_marc),
1578                                                wrbuf_len(rec->wrbuf_marc),
1579                                                charset);
1580                 }
1581                 yaz_marc_destroy(mt);
1582             }
1583             return record_iconv_return(rec, len,
1584                                        (const char *) r->u.octet_aligned->buf,
1585                                        r->u.octet_aligned->len,
1586                                        charset);
1587         }
1588         else if (r->which == Z_External_grs1)
1589         {
1590             if (len) *len = 5;
1591             return "GRS-1";
1592         }
1593         else if (r->which == Z_External_OPAC)
1594         {
1595             if (len) *len = 4;
1596             return "OPAC";
1597         }
1598         return 0;
1599     }
1600     else if (!strcmp (type, "raw"))
1601     {
1602         if (npr->which == Z_NamePlusRecord_databaseRecord)
1603         {
1604             Z_External *r = (Z_External *) npr->u.databaseRecord;
1605
1606             if (r->which == Z_External_sutrs)
1607             {
1608                 if (len) *len = r->u.sutrs->len;
1609                 return (const char *) r->u.sutrs->buf;
1610             }
1611             else if (r->which == Z_External_octet)
1612             {
1613                 if (len) *len = r->u.octet_aligned->len;
1614                 return (const char *) r->u.octet_aligned->buf;
1615             }
1616             else /* grs-1, explain, ... */
1617             {
1618                 if (len) *len = -1;
1619                 return (const char *) npr->u.databaseRecord;
1620             }
1621         }
1622         return 0;
1623     }
1624     else if (!strcmp (type, "ext"))
1625     {
1626         if (npr->which == Z_NamePlusRecord_databaseRecord)
1627             return (const char *) npr->u.databaseRecord;
1628         return 0;
1629     }
1630     return 0;
1631 }
1632
1633 static int strcmp_null(const char *v1, const char *v2)
1634 {
1635     if (!v1 && !v2)
1636         return 0;
1637     if (!v1 || !v2)
1638         return -1;
1639     return strcmp(v1, v2);
1640 }
1641
1642 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1643                               int pos)
1644 {
1645     ZOOM_record_cache rc;
1646     const char *elementSetName =
1647         ZOOM_resultset_option_get (r, "elementSetName");
1648     const char *syntax =
1649         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1650
1651     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1652     ZOOM_connection_put_event(r->connection, event);
1653
1654     for (rc = r->record_cache; rc; rc = rc->next)
1655     {
1656         if (pos == rc->pos)
1657         {
1658             if (strcmp_null(r->schema, rc->schema))
1659                 continue;
1660             if (strcmp_null(elementSetName,rc->elementSetName))
1661                 continue;
1662             if (strcmp_null(syntax, rc->syntax))
1663                 continue;
1664             /* not destroying rc->npr (it's handled by nmem )*/
1665             rc->rec.npr = npr;
1666             /* keeping wrbuf_marc too */
1667             return;
1668         }
1669     }
1670     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1671     rc->rec.npr = npr;
1672     rc->rec.odr = 0;
1673     rc->rec.wrbuf_marc = 0;
1674     rc->rec.wrbuf_iconv = 0;
1675     if (elementSetName)
1676         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1677     else
1678         rc->elementSetName = 0;
1679
1680     if (syntax)
1681         rc->syntax = odr_strdup (r->odr, syntax);
1682     else
1683         rc->syntax = 0;
1684
1685     if (r->schema)
1686         rc->schema = odr_strdup (r->odr, r->schema);
1687     else
1688         rc->schema = 0;
1689
1690     rc->pos = pos;
1691     rc->next = r->record_cache;
1692     r->record_cache = rc;
1693 }
1694
1695 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1696 {
1697     ZOOM_record_cache rc;
1698     const char *elementSetName =
1699         ZOOM_resultset_option_get (r, "elementSetName");
1700     const char *syntax =
1701         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1702
1703     for (rc = r->record_cache; rc; rc = rc->next)
1704     {
1705         if (pos == rc->pos)
1706         {
1707             if (strcmp_null(r->schema, rc->schema))
1708                 continue;
1709             if (strcmp_null(elementSetName,rc->elementSetName))
1710                 continue;
1711             if (strcmp_null(syntax, rc->syntax))
1712                 continue;
1713             return &rc->rec;
1714         }
1715     }
1716     return 0;
1717 }
1718
1719 static void handle_records (ZOOM_connection c, Z_Records *sr,
1720                             int present_phase)
1721 {
1722     ZOOM_resultset resultset;
1723
1724     if (!c->tasks)
1725         return ;
1726     switch (c->tasks->which)
1727     {
1728     case ZOOM_TASK_SEARCH:
1729         resultset = c->tasks->u.search.resultset;
1730         break;
1731     case ZOOM_TASK_RETRIEVE:
1732         resultset = c->tasks->u.retrieve.resultset;
1733         break;
1734     default:
1735         return;
1736     }
1737     if (sr && sr->which == Z_Records_NSD)
1738     {
1739         Z_DiagRec dr, *dr_p = &dr;
1740         dr.which = Z_DiagRec_defaultFormat;
1741         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1742
1743         response_diag (c, dr_p);
1744     }
1745     else if (sr && sr->which == Z_Records_multipleNSD)
1746     {
1747         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1748             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1749         else
1750             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1751     }
1752     else
1753     {
1754         if (resultset->count + resultset->start > resultset->size)
1755             resultset->count = resultset->size - resultset->start;
1756         if (resultset->count < 0)
1757             resultset->count = 0;
1758         if (sr && sr->which == Z_Records_DBOSD)
1759         {
1760             int i;
1761             NMEM nmem = odr_extract_mem (c->odr_in);
1762             Z_NamePlusRecordList *p =
1763                 sr->u.databaseOrSurDiagnostics;
1764             for (i = 0; i<p->num_records; i++)
1765             {
1766                 record_cache_add (resultset, p->records[i],
1767                                   i+ resultset->start);
1768             }
1769             /* transfer our response to search_nmem .. we need it later */
1770             nmem_transfer (resultset->odr->mem, nmem);
1771             nmem_destroy (nmem);
1772             if (present_phase && p->num_records == 0)
1773             {
1774                 /* present response and we didn't get any records! */
1775                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1776             }
1777         }
1778         else if (present_phase)
1779         {
1780             /* present response and we didn't get any records! */
1781             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1782         }
1783     }
1784 }
1785
1786 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1787 {
1788     handle_records (c, pr->records, 1);
1789 }
1790
1791 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1792 {
1793     ZOOM_resultset resultset;
1794     ZOOM_Event event;
1795
1796     yaz_log (LOG_DEBUG, "got search response");
1797
1798     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1799         return ;
1800
1801     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
1802     ZOOM_connection_put_event(c, event);
1803
1804     resultset = c->tasks->u.search.resultset;
1805
1806     resultset->size = *sr->resultCount;
1807     handle_records (c, sr->records, 0);
1808 }
1809
1810 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
1811 {
1812     if (res->diagnostics && res->num_diagnostics > 0)
1813         response_diag (c, res->diagnostics[0]);
1814 }
1815
1816 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
1817 {
1818     NMEM nmem = odr_extract_mem (c->odr_in);
1819     ZOOM_scanset scan;
1820
1821     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
1822         return 0;
1823     scan = c->tasks->u.scan.scan;
1824
1825     if (res->entries && res->entries->nonsurrogateDiagnostics)
1826         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
1827     scan->scan_response = res;
1828     nmem_transfer (scan->odr->mem, nmem);
1829     if (res->stepSize)
1830         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
1831     if (res->positionOfTerm)
1832         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
1833     if (res->scanStatus)
1834         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
1835     if (res->numberOfEntriesReturned)
1836         ZOOM_options_set_int (scan->options, "number",
1837                               *res->numberOfEntriesReturned);
1838     nmem_destroy (nmem);
1839     return 1;
1840 }
1841
1842 static zoom_ret send_sort (ZOOM_connection c)
1843 {
1844     ZOOM_resultset  resultset;
1845
1846     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1847         return zoom_complete;
1848
1849     resultset = c->tasks->u.search.resultset;
1850
1851     if (c->error)
1852     {
1853         resultset->r_sort_spec = 0;
1854         return zoom_complete;
1855     }
1856     if (resultset->r_sort_spec)
1857     {
1858         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
1859         Z_SortRequest *req = apdu->u.sortRequest;
1860
1861         req->num_inputResultSetNames = 1;
1862         req->inputResultSetNames = (Z_InternationalString **)
1863             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
1864         req->inputResultSetNames[0] =
1865             odr_strdup (c->odr_out, resultset->setname);
1866         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
1867         req->sortSequence = resultset->r_sort_spec;
1868         resultset->r_sort_spec = 0;
1869         return send_APDU (c, apdu);
1870     }
1871     return zoom_complete;
1872 }
1873
1874 static zoom_ret send_present (ZOOM_connection c)
1875 {
1876     Z_APDU *apdu = 0;
1877     Z_PresentRequest *req = 0;
1878     int i = 0;
1879     const char *syntax = 0;
1880     const char *elementSetName = 0;
1881     ZOOM_resultset  resultset;
1882
1883     if (!c->tasks)
1884         return zoom_complete;
1885
1886     switch (c->tasks->which)
1887     {
1888     case ZOOM_TASK_SEARCH:
1889         resultset = c->tasks->u.search.resultset;
1890         break;
1891     case ZOOM_TASK_RETRIEVE:
1892         resultset = c->tasks->u.retrieve.resultset;
1893         resultset->start = c->tasks->u.retrieve.start;
1894         resultset->count = c->tasks->u.retrieve.count;
1895
1896         if (resultset->start >= resultset->size)
1897             return zoom_complete;
1898         if (resultset->start + resultset->count > resultset->size)
1899             resultset->count = resultset->size - resultset->start;
1900         break;
1901     default:
1902         return zoom_complete;
1903     }
1904
1905     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
1906     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
1907
1908     if (c->error)                  /* don't continue on error */
1909         return zoom_complete;
1910     if (resultset->start < 0)
1911         return zoom_complete;
1912     for (i = 0; i<resultset->count; i++)
1913     {
1914         ZOOM_record rec =
1915             record_cache_lookup (resultset, i + resultset->start);
1916         if (!rec)
1917             break;
1918     }
1919     if (i == resultset->count)
1920         return zoom_complete;
1921
1922     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
1923     req = apdu->u.presentRequest;
1924
1925     resultset->start += i;
1926     resultset->count -= i;
1927     *req->resultSetStartPoint = resultset->start + 1;
1928     *req->numberOfRecordsRequested = resultset->step>0 ?
1929         resultset->step : resultset->count;
1930     assert (*req->numberOfRecordsRequested > 0);
1931
1932     if (syntax && *syntax)
1933         req->preferredRecordSyntax =
1934             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1935
1936     if (resultset->schema && *resultset->schema)
1937     {
1938         Z_RecordComposition *compo = (Z_RecordComposition *)
1939             odr_malloc (c->odr_out, sizeof(*compo));
1940
1941         req->recordComposition = compo;
1942         compo->which = Z_RecordComp_complex;
1943         compo->u.complex = (Z_CompSpec *)
1944             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
1945         compo->u.complex->selectAlternativeSyntax = (bool_t *)
1946             odr_malloc(c->odr_out, sizeof(bool_t));
1947         *compo->u.complex->selectAlternativeSyntax = 0;
1948
1949         compo->u.complex->generic = (Z_Specification *)
1950             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
1951
1952         compo->u.complex->generic->which = Z_Schema_oid;
1953         compo->u.complex->generic->schema.oid = (Odr_oid *)
1954             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
1955
1956         if (!compo->u.complex->generic->schema.oid)
1957         {
1958             /* OID wasn't a schema! Try record syntax instead. */
1959
1960             compo->u.complex->generic->schema.oid = (Odr_oid *)
1961                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
1962         }
1963         if (elementSetName && *elementSetName)
1964         {
1965             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
1966                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
1967             compo->u.complex->generic->elementSpec->which =
1968                 Z_ElementSpec_elementSetName;
1969             compo->u.complex->generic->elementSpec->u.elementSetName =
1970                 odr_strdup (c->odr_out, elementSetName);
1971         }
1972         else
1973             compo->u.complex->generic->elementSpec = 0;
1974         compo->u.complex->num_dbSpecific = 0;
1975         compo->u.complex->dbSpecific = 0;
1976         compo->u.complex->num_recordSyntax = 0;
1977         compo->u.complex->recordSyntax = 0;
1978     }
1979     else if (elementSetName && *elementSetName)
1980     {
1981         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1982             odr_malloc (c->odr_out, sizeof(*esn));
1983         Z_RecordComposition *compo = (Z_RecordComposition *)
1984             odr_malloc (c->odr_out, sizeof(*compo));
1985
1986         esn->which = Z_ElementSetNames_generic;
1987         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
1988         compo->which = Z_RecordComp_simple;
1989         compo->u.simple = esn;
1990         req->recordComposition = compo;
1991     }
1992     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
1993     return send_APDU (c, apdu);
1994 }
1995
1996 ZOOM_API(ZOOM_scanset)
1997 ZOOM_connection_scan (ZOOM_connection c, const char *start)
1998 {
1999     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2000
2001     scan->connection = c;
2002     scan->odr = odr_createmem (ODR_DECODE);
2003     scan->options = ZOOM_options_create_with_parent (c->options);
2004     scan->refcount = 1;
2005     scan->scan_response = 0;
2006
2007     if ((scan->termListAndStartPoint =
2008          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2009                       start)))
2010     {
2011         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2012         task->u.scan.scan = scan;
2013
2014         (scan->refcount)++;
2015         if (!c->async)
2016         {
2017             while (ZOOM_event (1, &c))
2018                 ;
2019         }
2020     }
2021     return scan;
2022 }
2023
2024 ZOOM_API(void)
2025 ZOOM_scanset_destroy (ZOOM_scanset scan)
2026 {
2027     if (!scan)
2028         return;
2029     (scan->refcount)--;
2030     if (scan->refcount == 0)
2031     {
2032         odr_destroy (scan->odr);
2033
2034         ZOOM_options_destroy (scan->options);
2035         xfree (scan);
2036     }
2037 }
2038
2039 static zoom_ret send_package (ZOOM_connection c)
2040 {
2041     ZOOM_Event event;
2042     if (!c->tasks)
2043         return zoom_complete;
2044     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2045
2046     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2047     ZOOM_connection_put_event (c, event);
2048
2049     return do_write_ex (c, c->tasks->u.package->buf_out,
2050                         c->tasks->u.package->len_out);
2051 }
2052
2053 static zoom_ret send_scan (ZOOM_connection c)
2054 {
2055     ZOOM_scanset scan;
2056     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2057     Z_ScanRequest *req = apdu->u.scanRequest;
2058     if (!c->tasks)
2059         return zoom_complete;
2060     assert (c->tasks->which == ZOOM_TASK_SCAN);
2061     scan = c->tasks->u.scan.scan;
2062
2063     req->termListAndStartPoint = scan->termListAndStartPoint;
2064     req->attributeSet = scan->attributeSet;
2065
2066     *req->numberOfTermsRequested =
2067         ZOOM_options_get_int(scan->options, "number", 10);
2068
2069     req->preferredPositionInResponse =
2070         odr_intdup (c->odr_out,
2071                     ZOOM_options_get_int(scan->options, "position", 1));
2072
2073     req->stepSize =
2074         odr_intdup (c->odr_out,
2075                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2076
2077     req->databaseNames = set_DatabaseNames (c, scan->options,
2078                                             &req->num_databaseNames);
2079
2080     return send_APDU (c, apdu);
2081 }
2082
2083 ZOOM_API(size_t)
2084 ZOOM_scanset_size (ZOOM_scanset scan)
2085 {
2086     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2087         return 0;
2088     return scan->scan_response->entries->num_entries;
2089 }
2090
2091 ZOOM_API(const char *)
2092 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2093                                int *occ, int *len)
2094 {
2095     const char *term = 0;
2096     size_t noent = ZOOM_scanset_size (scan);
2097     Z_ScanResponse *res = scan->scan_response;
2098
2099     *len = 0;
2100     *occ = 0;
2101     if (pos >= noent)
2102         return 0;
2103     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2104     {
2105         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2106
2107         if (t->term->which == Z_Term_general)
2108         {
2109             term = (const char *) t->term->u.general->buf;
2110             *len = t->term->u.general->len;
2111         }
2112         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2113     }
2114     return term;
2115 }
2116
2117 ZOOM_API(const char *)
2118 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2119 {
2120     return ZOOM_options_get (scan->options, key);
2121 }
2122
2123 ZOOM_API(void)
2124 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2125                               const char *val)
2126 {
2127     ZOOM_options_set (scan->options, key, val);
2128 }
2129
2130 static Z_APDU *create_es_package (ZOOM_package p, int type)
2131 {
2132     const char *str;
2133     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2134     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2135
2136     *req->function = Z_ExtendedServicesRequest_create;
2137
2138     str = ZOOM_options_get(p->options, "package-name");
2139     if (str && *str)
2140         req->packageName = nmem_strdup (p->odr_out->mem, str);
2141
2142     str = ZOOM_options_get(p->options, "user-id");
2143     if (str)
2144         req->userId = nmem_strdup (p->odr_out->mem, str);
2145
2146     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2147                                               type);
2148
2149     str = ZOOM_options_get(p->options, "function");
2150     if (str)
2151     {
2152         if (!strcmp (str, "create"))
2153             *req->function = 1;
2154         if (!strcmp (str, "delete"))
2155             *req->function = 2;
2156         if (!strcmp (str, "modify"))
2157             *req->function = 3;
2158     }
2159     return apdu;
2160 }
2161
2162 static const char *ill_array_lookup (void *clientData, const char *idx)
2163 {
2164     ZOOM_package p = (ZOOM_package) clientData;
2165     return ZOOM_options_get (p->options, idx+4);
2166 }
2167
2168 static Z_External *encode_ill_request (ZOOM_package p)
2169 {
2170     ODR out = p->odr_out;
2171     ILL_Request *req;
2172     Z_External *r = 0;
2173     struct ill_get_ctl ctl;
2174
2175     ctl.odr = p->odr_out;
2176     ctl.clientData = p;
2177     ctl.f = ill_array_lookup;
2178
2179     req = ill_get_ILLRequest(&ctl, "ill", 0);
2180
2181     if (!ill_Request (out, &req, 0, 0))
2182     {
2183         int ill_request_size;
2184         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2185         if (ill_request_buf)
2186             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2187         return 0;
2188     }
2189     else
2190     {
2191         oident oid;
2192         int illRequest_size = 0;
2193         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2194
2195         oid.proto = PROTO_GENERAL;
2196         oid.oclass = CLASS_GENERAL;
2197         oid.value = VAL_ISO_ILL_1;
2198
2199         r = (Z_External *) odr_malloc (out, sizeof(*r));
2200         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2201         r->indirect_reference = 0;
2202         r->descriptor = 0;
2203         r->which = Z_External_single;
2204
2205         r->u.single_ASN1_type = (Odr_oct *)
2206             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2207         r->u.single_ASN1_type->buf = (unsigned char*)
2208             odr_malloc (out, illRequest_size);
2209         r->u.single_ASN1_type->len = illRequest_size;
2210         r->u.single_ASN1_type->size = illRequest_size;
2211         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2212     }
2213     return r;
2214 }
2215
2216 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2217 {
2218     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2219     const char *str;
2220
2221     req->which=Z_IOItemOrder_esRequest;
2222     req->u.esRequest = (Z_IORequest *)
2223         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2224
2225     /* to keep part ... */
2226     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2227         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2228     req->u.esRequest->toKeep->supplDescription = 0;
2229     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2230         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2231
2232     str = ZOOM_options_get(p->options, "contact-name");
2233     req->u.esRequest->toKeep->contact->name = str ?
2234         nmem_strdup (p->odr_out->mem, str) : 0;
2235
2236     str = ZOOM_options_get(p->options, "contact-phone");
2237     req->u.esRequest->toKeep->contact->phone = str ?
2238         nmem_strdup (p->odr_out->mem, str) : 0;
2239
2240     str = ZOOM_options_get(p->options, "contact-email");
2241     req->u.esRequest->toKeep->contact->email = str ?
2242         nmem_strdup (p->odr_out->mem, str) : 0;
2243
2244     req->u.esRequest->toKeep->addlBilling = 0;
2245
2246     /* not to keep part ... */
2247     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2248         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2249
2250     str = ZOOM_options_get(p->options, "itemorder-setname");
2251     if (!str)
2252         str = "default";
2253
2254     if (!*str)
2255         req->u.esRequest->notToKeep->resultSetItem = 0;
2256     else
2257     {
2258         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2259            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2260
2261         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2262            nmem_strdup (p->odr_out->mem, str);
2263         req->u.esRequest->notToKeep->resultSetItem->item =
2264             (int *) odr_malloc(p->odr_out, sizeof(int));
2265
2266         str = ZOOM_options_get(p->options, "itemorder-item");
2267         *req->u.esRequest->notToKeep->resultSetItem->item =
2268             (str ? atoi(str) : 1);
2269     }
2270     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2271
2272     return req;
2273 }
2274
2275 ZOOM_API(void)
2276     ZOOM_package_send (ZOOM_package p, const char *type)
2277 {
2278     Z_APDU *apdu = 0;
2279     ZOOM_connection c;
2280     if (!p)
2281         return;
2282     c = p->connection;
2283     odr_reset (p->odr_out);
2284     xfree (p->buf_out);
2285     p->buf_out = 0;
2286     if (!strcmp(type, "itemorder"))
2287     {
2288         Z_External *r;
2289         apdu = create_es_package (p, VAL_ITEMORDER);
2290         if (apdu)
2291         {
2292             r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2293
2294             r->direct_reference =
2295                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2296                                        VAL_ITEMORDER);
2297             r->descriptor = 0;
2298             r->which = Z_External_itemOrder;
2299             r->indirect_reference = 0;
2300             r->u.itemOrder = encode_item_order (p);
2301
2302             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2303         }
2304     }
2305     if (apdu)
2306     {
2307         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2308         {
2309             char *buf;
2310
2311             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2312             task->u.package = p;
2313             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2314             p->buf_out = (char *) xmalloc (p->len_out);
2315             memcpy (p->buf_out, buf, p->len_out);
2316
2317             (p->refcount)++;
2318             if (!c->async)
2319             {
2320                 while (ZOOM_event (1, &c))
2321                     ;
2322             }
2323         }
2324     }
2325 }
2326
2327 ZOOM_API(ZOOM_package)
2328     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2329 {
2330     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2331
2332     p->connection = c;
2333     p->odr_out = odr_createmem (ODR_ENCODE);
2334     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2335     p->refcount = 1;
2336     p->buf_out = 0;
2337     p->len_out = 0;
2338     return p;
2339 }
2340
2341 ZOOM_API(void)
2342     ZOOM_package_destroy(ZOOM_package p)
2343 {
2344     if (!p)
2345         return;
2346     (p->refcount)--;
2347     if (p->refcount == 0)
2348     {
2349         odr_destroy (p->odr_out);
2350         xfree (p->buf_out);
2351
2352         ZOOM_options_destroy (p->options);
2353         xfree (p);
2354     }
2355 }
2356
2357 ZOOM_API(const char *)
2358 ZOOM_package_option_get (ZOOM_package p, const char *key)
2359 {
2360     return ZOOM_options_get (p->options, key);
2361 }
2362
2363
2364 ZOOM_API(void)
2365 ZOOM_package_option_set (ZOOM_package p, const char *key,
2366                               const char *val)
2367 {
2368     ZOOM_options_set (p->options, key, val);
2369 }
2370
2371 static int ZOOM_connection_exec_task (ZOOM_connection c)
2372 {
2373     ZOOM_task task = c->tasks;
2374     zoom_ret ret = zoom_complete;
2375
2376     if (!task)
2377     {
2378         yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task task=<null>");
2379         return 0;
2380     }
2381     yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task type=%d run=%d",
2382              task->which, task->running);
2383     if (c->error != ZOOM_ERROR_NONE)
2384     {
2385         yaz_log (LOG_DEBUG, "remove tasks because of error = %d", c->error);
2386         ZOOM_connection_remove_tasks (c);
2387         return 0;
2388     }
2389     if (task->running)
2390     {
2391         yaz_log (LOG_DEBUG, "task already running");
2392         return 0;
2393     }
2394     task->running = 1;
2395     ret = zoom_complete;
2396     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2397     {
2398         switch (task->which)
2399         {
2400         case ZOOM_TASK_SEARCH:
2401             if (c->proto == PROTO_HTTP)
2402                 ret = ZOOM_connection_srw_send_search(c);
2403             else
2404                 ret = ZOOM_connection_send_search(c);
2405             break;
2406         case ZOOM_TASK_RETRIEVE:
2407             if (c->proto == PROTO_HTTP)
2408                 ret = ZOOM_connection_srw_send_search(c);
2409             else
2410                 ret = send_present (c);
2411             break;
2412         case ZOOM_TASK_CONNECT:
2413             ret = do_connect(c);
2414             break;
2415         case ZOOM_TASK_SCAN:
2416             ret = send_scan(c);
2417             break;
2418         case ZOOM_TASK_PACKAGE:
2419             ret = send_package(c);
2420             break;
2421         }
2422     }
2423     else
2424     {
2425         yaz_log (LOG_DEBUG, "remove tasks because no connection exist");
2426         ZOOM_connection_remove_tasks (c);
2427     }
2428     if (ret == zoom_complete)
2429     {
2430         yaz_log (LOG_DEBUG, "task removed (complete)");
2431         ZOOM_connection_remove_task (c);
2432         return 0;
2433     }
2434     yaz_log (LOG_DEBUG, "task pending");
2435     return 1;
2436 }
2437
2438 static zoom_ret send_sort_present (ZOOM_connection c)
2439 {
2440     zoom_ret r = send_sort (c);
2441     if (r == zoom_complete)
2442         r = send_present (c);
2443     return r;
2444 }
2445
2446 static int es_response (ZOOM_connection c,
2447                         Z_ExtendedServicesResponse *res)
2448 {
2449     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2450         return 0;
2451     if (res->diagnostics && res->num_diagnostics > 0)
2452         response_diag(c, res->diagnostics[0]);
2453     if (res->taskPackage &&
2454         res->taskPackage->which == Z_External_extendedService)
2455     {
2456         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2457         Odr_oct *id = taskPackage->targetReference;
2458
2459         if (id)
2460             ZOOM_options_setl (c->tasks->u.package->options,
2461                                "targetReference", (char*) id->buf, id->len);
2462     }
2463     return 1;
2464 }
2465
2466
2467 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2468 {
2469     Z_InitResponse *initrs;
2470
2471     c->mask = 0;
2472     yaz_log (LOG_DEBUG, "handle_apdu type=%d", apdu->which);
2473     switch(apdu->which)
2474     {
2475     case Z_APDU_initResponse:
2476         initrs = apdu->u.initResponse;
2477         ZOOM_connection_option_set(c, "targetImplementationId",
2478                                    initrs->implementationId ?
2479                                    initrs->implementationId : "");
2480         ZOOM_connection_option_set(c, "targetImplementationName",
2481                                    initrs->implementationName ?
2482                                    initrs->implementationName : "");
2483         ZOOM_connection_option_set(c, "targetImplementationVersion",
2484                                    initrs->implementationVersion ?
2485                                    initrs->implementationVersion : "");
2486         if (!*initrs->result)
2487         {
2488             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0);
2489         }
2490         else
2491         {
2492             char *cookie =
2493                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2494                                           VAL_COOKIE, 1, 0);
2495             xfree (c->cookie_in);
2496             c->cookie_in = 0;
2497             if (cookie)
2498                 c->cookie_in = xstrdup(cookie);
2499             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2500                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2501                 c->support_named_resultsets = 1;
2502             if (c->tasks)
2503             {
2504                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2505                 ZOOM_connection_remove_task (c);
2506             }
2507             ZOOM_connection_exec_task (c);
2508         }
2509         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2510         {
2511             NMEM tmpmem = nmem_create();
2512             Z_CharSetandLanguageNegotiation *p =
2513                 yaz_get_charneg_record(initrs->otherInfo);
2514
2515             if (p)
2516             {
2517                 char *charset=NULL, *lang=NULL;
2518                 int sel;
2519
2520                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2521                 yaz_log(LOG_DEBUG, "Target accepted: charset %s, "
2522                         "language %s, select %d",
2523                         charset ? charset : "none", lang ? lang : "none", sel);
2524                 if (charset)
2525                     ZOOM_connection_option_set (c, "negotiation-charset",
2526                                                 charset);
2527                 if (lang)
2528                     ZOOM_connection_option_set (c, "negotiation-lang",
2529                                                 lang);
2530                 nmem_destroy(tmpmem);
2531             }
2532         }
2533         break;
2534     case Z_APDU_searchResponse:
2535         handle_search_response (c, apdu->u.searchResponse);
2536         if (send_sort_present (c) == zoom_complete)
2537             ZOOM_connection_remove_task (c);
2538         break;
2539     case Z_APDU_presentResponse:
2540         handle_present_response (c, apdu->u.presentResponse);
2541         if (send_present (c) == zoom_complete)
2542             ZOOM_connection_remove_task (c);
2543         break;
2544     case Z_APDU_sortResponse:
2545         sort_response (c, apdu->u.sortResponse);
2546         if (send_present (c) == zoom_complete)
2547             ZOOM_connection_remove_task (c);
2548         break;
2549     case Z_APDU_scanResponse:
2550         scan_response (c, apdu->u.scanResponse);
2551         ZOOM_connection_remove_task (c);
2552         break;
2553     case Z_APDU_extendedServicesResponse:
2554         es_response (c, apdu->u.extendedServicesResponse);
2555         ZOOM_connection_remove_task (c);
2556         break;
2557     case Z_APDU_close:
2558         if (c->reconnect_ok)
2559         {
2560             do_close(c);
2561             c->tasks->running = 0;
2562             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2563         }
2564         else
2565         {
2566             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2567             do_close(c);
2568         }
2569         break;
2570     default:
2571         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2572         do_close(c);
2573     }
2574 }
2575
2576 #if HAVE_XML2
2577 static void handle_srw_response(ZOOM_connection c,
2578                                 Z_SRW_searchRetrieveResponse *res)
2579 {
2580     ZOOM_resultset resultset = 0;
2581     int i;
2582     NMEM nmem;
2583     ZOOM_Event event;
2584
2585     if (!c->tasks)
2586         return;
2587
2588     if (c->tasks->which == ZOOM_TASK_SEARCH)
2589         resultset = c->tasks->u.search.resultset;
2590     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
2591         resultset = c->tasks->u.retrieve.resultset;
2592     else
2593         return ;
2594
2595     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2596     ZOOM_connection_put_event(c, event);
2597
2598     resultset->size = 0;
2599
2600     yaz_log(LOG_DEBUG, "got SRW response OK");
2601
2602     if (res->numberOfRecords)
2603         resultset->size = *res->numberOfRecords;
2604
2605     for (i = 0; i<res->num_records; i++)
2606     {
2607         int pos;
2608
2609         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
2610             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
2611
2612         if (res->records[i].recordPosition &&
2613             *res->records[i].recordPosition > 0)
2614             pos = *res->records[i].recordPosition - 1;
2615         else
2616             pos = resultset->start + i;
2617
2618         npr->databaseName = 0;
2619         npr->which = Z_NamePlusRecord_databaseRecord;
2620         npr->u.databaseRecord = (Z_External *)
2621             odr_malloc(c->odr_in, sizeof(Z_External));
2622         npr->u.databaseRecord->descriptor = 0;
2623         npr->u.databaseRecord->direct_reference =
2624             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
2625         npr->u.databaseRecord->which = Z_External_octet;
2626         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
2627             odr_malloc(c->odr_in, sizeof(Odr_oct));
2628         npr->u.databaseRecord->u.octet_aligned->buf =
2629             res->records[i].recordData_buf;
2630         npr->u.databaseRecord->u.octet_aligned->len =
2631             npr->u.databaseRecord->u.octet_aligned->size =
2632             res->records[i].recordData_len;
2633         record_cache_add (resultset, npr, pos);
2634     }
2635     if (res->num_diagnostics > 0)
2636     {
2637         set_dset_error(c, *res->diagnostics[0].code, "SRW",
2638                        res->diagnostics[0].details, 0);
2639     }
2640     nmem = odr_extract_mem(c->odr_in);
2641     nmem_transfer(resultset->odr->mem, nmem);
2642     nmem_destroy(nmem);
2643 }
2644 #endif
2645
2646 #if HAVE_XML2
2647 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
2648 {
2649     int ret = -1;
2650     const char *content_type = z_HTTP_header_lookup(hres->headers,
2651                                                     "Content-Type");
2652     const char *connection_head = z_HTTP_header_lookup(hres->headers,
2653                                                        "Connection");
2654     c->mask = 0;
2655     yaz_log (LOG_DEBUG, "handle_http");
2656
2657     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
2658     {
2659         Z_SOAP *soap_package = 0;
2660         ODR o = odr_createmem(ODR_DECODE);
2661         Z_SOAP_Handler soap_handlers[2] = {
2662             {"http://www.loc.gov/zing/srw/v1.0/", 0,
2663              (Z_SOAP_fun) yaz_srw_codec},
2664             {0, 0, 0}
2665         };
2666         ret = z_soap_codec(o, &soap_package,
2667                            &hres->content_buf, &hres->content_len,
2668                            soap_handlers);
2669         if (!ret && soap_package->which == Z_SOAP_generic &&
2670             soap_package->u.generic->no == 0)
2671         {
2672             Z_SRW_PDU *sr = soap_package->u.generic->p;
2673             if (sr->which == Z_SRW_searchRetrieve_response)
2674                 handle_srw_response(c, sr->u.response);
2675             else
2676                 ret = -1;
2677         }
2678         else if (!ret && (soap_package->which == Z_SOAP_fault
2679                           || soap_package->which == Z_SOAP_error))
2680         {
2681             set_HTTP_error(c, hres->code,
2682                            soap_package->u.fault->fault_code,
2683                            soap_package->u.fault->fault_string);
2684         }
2685         else
2686             ret = -1;
2687         odr_destroy(o);
2688     }
2689     if (ret)
2690     {
2691         if (hres->code != 200)
2692             set_HTTP_error(c, hres->code, 0, 0);
2693         else
2694             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2695         do_close (c);
2696     }
2697     ZOOM_connection_remove_task(c);
2698     if (!strcmp(hres->version, "1.0"))
2699     {
2700         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
2701         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
2702             do_close(c);
2703     }
2704     else
2705     {
2706         /* HTTP 1.1: only if no close we stay alive .. */
2707         if (connection_head && !strcmp(connection_head, "close"))
2708             do_close(c);
2709     }
2710 }
2711 #endif
2712
2713 static int do_read (ZOOM_connection c)
2714 {
2715     int r;
2716     ZOOM_Event event;
2717
2718     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
2719     ZOOM_connection_put_event (c, event);
2720
2721     yaz_log (LOG_DEBUG, "do_read len=%d", c->len_in);
2722
2723     r = cs_get (c->cs, &c->buf_in, &c->len_in);
2724     if (r == 1)
2725         return 0;
2726     if (r <= 0)
2727     {
2728         if (c->reconnect_ok)
2729         {
2730             do_close (c);
2731             c->reconnect_ok = 0;
2732             yaz_log (LOG_DEBUG, "reconnect read");
2733             c->tasks->running = 0;
2734             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2735         }
2736         else
2737         {
2738             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2739             do_close (c);
2740         }
2741     }
2742     else
2743     {
2744         Z_GDU *gdu;
2745         ZOOM_Event event;
2746
2747         odr_reset (c->odr_in);
2748         odr_setbuf (c->odr_in, c->buf_in, r, 0);
2749         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
2750         ZOOM_connection_put_event (c, event);
2751
2752         if (!z_GDU (c->odr_in, &gdu, 0, 0))
2753         {
2754             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2755             do_close (c);
2756         }
2757         else if (gdu->which == Z_GDU_Z3950)
2758             handle_apdu (c, gdu->u.z3950);
2759         else if (gdu->which == Z_GDU_HTTP_Response)
2760         {
2761 #if HAVE_XML2
2762             handle_http (c, gdu->u.HTTP_Response);
2763 #else
2764             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2765             do_close (c);
2766 #endif
2767         }
2768         c->reconnect_ok = 0;
2769     }
2770     return 1;
2771 }
2772
2773 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
2774 {
2775     int r;
2776     ZOOM_Event event;
2777
2778     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
2779     ZOOM_connection_put_event (c, event);
2780
2781     yaz_log (LOG_DEBUG, "do_write_ex len=%d", len_out);
2782     if ((r=cs_put (c->cs, buf_out, len_out)) < 0)
2783     {
2784         if (c->reconnect_ok)
2785         {
2786             do_close (c);
2787             c->reconnect_ok = 0;
2788             yaz_log (LOG_DEBUG, "reconnect write");
2789             c->tasks->running = 0;
2790             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2791             return zoom_pending;
2792         }
2793         if (c->state == STATE_CONNECTING)
2794             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
2795         else
2796             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2797         do_close (c);
2798         return zoom_complete;
2799     }
2800     else if (r == 1)
2801     {
2802         c->mask = ZOOM_SELECT_EXCEPT;
2803         if (c->cs->io_pending & CS_WANT_WRITE)
2804             c->mask += ZOOM_SELECT_WRITE;
2805         if (c->cs->io_pending & CS_WANT_READ)
2806             c->mask += ZOOM_SELECT_READ;
2807         yaz_log (LOG_DEBUG, "do_write_ex 1 mask=%d", c->mask);
2808     }
2809     else
2810     {
2811         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
2812         yaz_log (LOG_DEBUG, "do_write_ex 2 mask=%d", c->mask);
2813     }
2814     return zoom_pending;
2815 }
2816
2817 static zoom_ret do_write(ZOOM_connection c)
2818 {
2819     return do_write_ex (c, c->buf_out, c->len_out);
2820 }
2821
2822
2823 ZOOM_API(const char *)
2824 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
2825 {
2826     return ZOOM_options_get (c->options, key);
2827 }
2828
2829 ZOOM_API(void)
2830 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
2831                                   const char *val)
2832 {
2833     ZOOM_options_set (c->options, key, val);
2834 }
2835
2836 ZOOM_API(const char *)
2837 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
2838 {
2839     return ZOOM_options_get (r->options, key);
2840 }
2841
2842 ZOOM_API(void)
2843 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
2844                                   const char *val)
2845 {
2846     ZOOM_options_set (r->options, key, val);
2847 }
2848
2849
2850 ZOOM_API(int)
2851 ZOOM_connection_errcode (ZOOM_connection c)
2852 {
2853     return ZOOM_connection_error (c, 0, 0);
2854 }
2855
2856 ZOOM_API(const char *)
2857 ZOOM_connection_errmsg (ZOOM_connection c)
2858 {
2859     const char *msg;
2860     ZOOM_connection_error (c, &msg, 0);
2861     return msg;
2862 }
2863
2864 ZOOM_API(const char *)
2865 ZOOM_connection_addinfo (ZOOM_connection c)
2866 {
2867     const char *addinfo;
2868     ZOOM_connection_error (c, 0, &addinfo);
2869     return addinfo;
2870 }
2871
2872 ZOOM_API(const char *)
2873 ZOOM_diag_str (int error)
2874 {
2875     switch (error)
2876     {
2877     case ZOOM_ERROR_NONE:
2878         return "No error";
2879     case ZOOM_ERROR_CONNECT:
2880         return "Connect failed";
2881     case ZOOM_ERROR_MEMORY:
2882         return "Out of memory";
2883     case ZOOM_ERROR_ENCODE:
2884         return "Encoding failed";
2885     case ZOOM_ERROR_DECODE:
2886         return "Decoding failed";
2887     case ZOOM_ERROR_CONNECTION_LOST:
2888         return "Connection lost";
2889     case ZOOM_ERROR_INIT:
2890         return "Init rejected";
2891     case ZOOM_ERROR_INTERNAL:
2892         return "Internal failure";
2893     case ZOOM_ERROR_TIMEOUT:
2894         return "Timeout";
2895     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
2896         return "Unsupported protocol";
2897     case ZOOM_ERROR_UNSUPPORTED_QUERY:
2898         return "Unsupported query type";
2899     default:
2900         return diagbib1_str (error);
2901     }
2902 }
2903
2904 ZOOM_API(int)
2905 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
2906                          const char **addinfo, const char **diagset)
2907 {
2908     int error = c->error;
2909     if (cp)
2910     {
2911         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
2912             *cp = ZOOM_diag_str(error);
2913         else if (!strcmp(c->diagset, "HTTP"))
2914             *cp = z_HTTP_errmsg(c->error);
2915         else if (!strcmp(c->diagset, "Bib-1"))
2916             *cp = ZOOM_diag_str(error);
2917         else if (!strcmp(c->diagset, "SRW"))
2918             *cp = yaz_diag_srw_str(c->error);
2919         else
2920             *cp = "Unknown error and diagnostic set";
2921     }
2922     if (addinfo)
2923         *addinfo = c->addinfo ? c->addinfo : "";
2924     if (diagset)
2925         *diagset = c->diagset ? c->diagset : "";
2926     return c->error;
2927 }
2928
2929 ZOOM_API(int)
2930 ZOOM_connection_error (ZOOM_connection c, const char **cp,
2931                        const char **addinfo)
2932 {
2933     return ZOOM_connection_error_x(c, cp, addinfo, 0);
2934 }
2935
2936 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
2937 {
2938     ZOOM_Event event = 0;
2939     int r = cs_look(c->cs);
2940     yaz_log (LOG_DEBUG, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
2941              c, mask, r);
2942
2943     if (r == CS_NONE)
2944     {
2945         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
2946         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
2947         do_close (c);
2948         ZOOM_connection_put_event (c, event);
2949     }
2950     else if (r == CS_CONNECT)
2951     {
2952         int ret;
2953         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
2954
2955         ret = cs_rcvconnect (c->cs);
2956         yaz_log (LOG_DEBUG, "cs_rcvconnect returned %d", ret);
2957         if (ret == 1)
2958         {
2959             c->mask = ZOOM_SELECT_EXCEPT;
2960             if (c->cs->io_pending & CS_WANT_WRITE)
2961                 c->mask += ZOOM_SELECT_WRITE;
2962             if (c->cs->io_pending & CS_WANT_READ)
2963                 c->mask += ZOOM_SELECT_READ;
2964             ZOOM_connection_put_event (c, event);
2965         }
2966         else if (ret == 0)
2967         {
2968             ZOOM_connection_put_event (c, event);
2969             if (c->proto == PROTO_Z3950)
2970                 ZOOM_connection_send_init(c);
2971             else
2972             {
2973                 /* no init request for SRW .. */
2974                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2975                 ZOOM_connection_remove_task (c);
2976                 c->mask = 0;
2977                 ZOOM_connection_exec_task (c);
2978             }
2979             c->state = STATE_ESTABLISHED;
2980         }
2981         else
2982         {
2983             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
2984             do_close (c);
2985             ZOOM_connection_put_event (c, event);
2986         }
2987     }
2988     else
2989     {
2990         if (mask & ZOOM_SELECT_READ)
2991             do_read (c);
2992         if (c->cs && (mask & ZOOM_SELECT_WRITE))
2993             do_write (c);
2994     }
2995     return 1;
2996 }
2997
2998 ZOOM_API(int)
2999 ZOOM_connection_last_event(ZOOM_connection cs)
3000 {
3001     if (!cs)
3002         return ZOOM_EVENT_NONE;
3003     return cs->last_event;
3004 }
3005
3006 ZOOM_API(int)
3007 ZOOM_event (int no, ZOOM_connection *cs)
3008 {
3009     int timeout = 5000;
3010 #if HAVE_SYS_POLL_H
3011     struct pollfd pollfds[1024];
3012     ZOOM_connection poll_cs[1024];
3013 #else
3014     struct timeval tv;
3015     fd_set input, output, except;
3016 #endif
3017     int i, r, nfds;
3018     int max_fd = 0;
3019
3020     for (i = 0; i<no; i++)
3021     {
3022         ZOOM_connection c = cs[i];
3023         ZOOM_Event event;
3024         if (c && (event = ZOOM_connection_get_event(c)))
3025         {
3026             ZOOM_Event_destroy (event);
3027             return i+1;
3028         }
3029     }
3030     for (i = 0; i<no; i++)
3031     {
3032         ZOOM_connection c = cs[i];
3033         ZOOM_Event event;
3034         if (c && ZOOM_connection_exec_task (c))
3035         {
3036             if ((event = ZOOM_connection_get_event(c)))
3037             {
3038                 ZOOM_Event_destroy (event);
3039                 return i+1;
3040             }
3041         }
3042     }
3043 #if HAVE_SYS_POLL_H
3044
3045 #else
3046     FD_ZERO (&input);
3047     FD_ZERO (&output);
3048     FD_ZERO (&except);
3049 #endif
3050     nfds = 0;
3051     for (i = 0; i<no; i++)
3052     {
3053         ZOOM_connection c = cs[i];
3054         int fd, mask;
3055         int this_timeout;
3056
3057         if (!c)
3058             continue;
3059         fd = z3950_connection_socket(c);
3060         mask = z3950_connection_mask(c);
3061
3062         if (fd == -1)
3063             continue;
3064         if (max_fd < fd)
3065             max_fd = fd;
3066
3067         this_timeout = ZOOM_options_get_int (c->options, "timeout", -1);
3068         if (this_timeout != -1 && this_timeout < timeout)
3069             timeout = this_timeout;
3070 #if HAVE_SYS_POLL_H
3071         if (mask)
3072         {
3073             short poll_events = 0;
3074
3075             if (mask & ZOOM_SELECT_READ)
3076                 poll_events += POLLIN;
3077             if (mask & ZOOM_SELECT_WRITE)
3078                 poll_events += POLLOUT;
3079             if (mask & ZOOM_SELECT_EXCEPT)
3080                 poll_events += POLLERR;
3081             pollfds[nfds].fd = fd;
3082             pollfds[nfds].events = poll_events;
3083             pollfds[nfds].revents = 0;
3084             poll_cs[nfds] = c;
3085             nfds++;
3086         }
3087 #else
3088         if (mask & ZOOM_SELECT_READ)
3089         {
3090             FD_SET (fd, &input);
3091             nfds++;
3092         }
3093         if (mask & ZOOM_SELECT_WRITE)
3094         {
3095             FD_SET (fd, &output);
3096             nfds++;
3097         }
3098         if (mask & ZOOM_SELECT_EXCEPT)
3099         {
3100             FD_SET (fd, &except);
3101             nfds++;
3102         }
3103 #endif
3104     }
3105     if (timeout >= 5000)
3106         timeout = 30;
3107
3108     if (!nfds)
3109         return 0;
3110
3111 #if HAVE_SYS_POLL_H
3112     r = poll (pollfds, nfds, timeout * 1000);
3113     for (i = 0; i<nfds; i++)
3114     {
3115         ZOOM_connection c = poll_cs[i];
3116         if (r && c->mask)
3117         {
3118             int mask = 0;
3119             if (pollfds[i].revents & POLLIN)
3120                 mask += ZOOM_SELECT_READ;
3121             if (pollfds[i].revents & POLLOUT)
3122                 mask += ZOOM_SELECT_WRITE;
3123             if (pollfds[i].revents & POLLERR)
3124                 mask += ZOOM_SELECT_EXCEPT;
3125             if (mask)
3126                 ZOOM_connection_do_io(c, mask);
3127         }
3128         else if (r == 0 && c->mask)
3129         {
3130             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3131             /* timeout and this connection was waiting */
3132             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3133             do_close (c);
3134             ZOOM_connection_put_event(c, event);
3135         }
3136     }
3137 #else
3138     tv.tv_sec = timeout;
3139     tv.tv_usec = 0;
3140     yaz_log (LOG_DEBUG, "select start");
3141     r = select (max_fd+1, &input, &output, &except, &tv);
3142     yaz_log (LOG_DEBUG, "select stop, returned r=%d", r);
3143     for (i = 0; i<no; i++)
3144     {
3145         ZOOM_connection c = cs[i];
3146         int fd, mask;
3147
3148         if (!c)
3149             continue;
3150         fd = z3950_connection_socket(c);
3151         mask = 0;
3152         if (r && c->mask)
3153         {
3154             /* no timeout and real socket */
3155             if (FD_ISSET(fd, &input))
3156                 mask += ZOOM_SELECT_READ;
3157             if (FD_ISSET(fd, &output))
3158                 mask += ZOOM_SELECT_WRITE;
3159             if (FD_ISSET(fd, &except))
3160                 mask += ZOOM_SELECT_EXCEPT;
3161             if (mask)
3162                 ZOOM_connection_do_io(c, mask);
3163         }
3164         if (r == 0 && c->mask)
3165         {
3166             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3167             /* timeout and this connection was waiting */
3168             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3169             do_close (c);
3170             yaz_log (LOG_DEBUG, "timeout");
3171             ZOOM_connection_put_event(c, event);
3172         }
3173     }
3174 #endif
3175     for (i = 0; i<no; i++)
3176     {
3177         ZOOM_connection c = cs[i];
3178         ZOOM_Event event;
3179         if (c && (event = ZOOM_connection_get_event(c)))
3180         {
3181             ZOOM_Event_destroy (event);
3182             return i+1;
3183         }
3184     }
3185     return 0;
3186 }