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 1.38 2003-06-03 13:59:28 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     }
1203     else
1204     {
1205         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1206         smallSetElementSetName = 0;
1207         mediumSetElementSetName = 0;
1208         syntax = 0;
1209     }
1210     if (smallSetElementSetName && *smallSetElementSetName)
1211     {
1212         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1213             odr_malloc (c->odr_out, sizeof(*esn));
1214
1215         esn->which = Z_ElementSetNames_generic;
1216         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1217         search_req->smallSetElementSetNames = esn;
1218     }
1219     if (mediumSetElementSetName && *mediumSetElementSetName)
1220     {
1221         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1222             odr_malloc (c->odr_out, sizeof(*esn));
1223
1224         esn->which = Z_ElementSetNames_generic;
1225         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1226         search_req->mediumSetElementSetNames = esn;
1227     }
1228     if (syntax)
1229         search_req->preferredRecordSyntax =
1230             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1231
1232     if (!r->setname)
1233     {
1234         if (c->support_named_resultsets)
1235         {
1236             char setname[14];
1237             int ord;
1238             /* find the lowest unused ordinal so that we re-use
1239                result sets on the server. */
1240             for (ord = 1; ; ord++)
1241             {
1242                 ZOOM_resultset rp;
1243                 sprintf (setname, "%d", ord);
1244                 for (rp = c->resultsets; rp; rp = rp->next)
1245                     if (rp->setname && !strcmp (rp->setname, setname))
1246                         break;
1247                 if (!rp)
1248                     break;
1249             }
1250             r->setname = xstrdup (setname);
1251             yaz_log (LOG_DEBUG, "allocating set %s", r->setname);
1252         }
1253         else
1254             r->setname = xstrdup ("default");
1255         ZOOM_options_set (r->options, "setname", r->setname);
1256     }
1257     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1258     /* send search request */
1259     return send_APDU (c, apdu);
1260 }
1261
1262 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
1263 {
1264     int oclass;
1265     Z_DefaultDiagFormat *r;
1266     char *addinfo = 0;
1267
1268     xfree (c->addinfo);
1269     c->addinfo = 0;
1270     if (p->which != Z_DiagRec_defaultFormat)
1271     {
1272         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1273         return;
1274     }
1275     r = p->u.defaultFormat;
1276     switch (r->which)
1277     {
1278     case Z_DefaultDiagFormat_v2Addinfo:
1279         addinfo = r->u.v2Addinfo;
1280         break;
1281     case Z_DefaultDiagFormat_v3Addinfo:
1282         addinfo = r->u.v3Addinfo;
1283         break;
1284     }
1285     set_dset_error(c, *r->condition,
1286                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1287                    addinfo, 0);
1288 }
1289
1290 ZOOM_API(ZOOM_record)
1291 ZOOM_record_clone (ZOOM_record srec)
1292 {
1293     char *buf;
1294     int size;
1295     ODR odr_enc;
1296     ZOOM_record nrec;
1297
1298     odr_enc = odr_createmem(ODR_ENCODE);
1299     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1300         return 0;
1301     buf = odr_getbuf (odr_enc, &size, 0);
1302
1303     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1304     nrec->odr = odr_createmem(ODR_DECODE);
1305     nrec->wrbuf_marc = 0;
1306     nrec->wrbuf_iconv = 0;
1307     odr_setbuf (nrec->odr, buf, size, 0);
1308     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1309
1310     odr_destroy (odr_enc);
1311     return nrec;
1312 }
1313
1314 ZOOM_API(ZOOM_record)
1315 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1316 {
1317     return record_cache_lookup (s, pos);
1318 }
1319
1320 ZOOM_API(ZOOM_record)
1321 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1322 {
1323     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1324
1325     if (!rec)
1326     {
1327         ZOOM_resultset_retrieve (r, 1, pos, 1);
1328         rec = ZOOM_resultset_record_immediate (r, pos);
1329     }
1330     return rec;
1331 }
1332
1333 ZOOM_API(void)
1334 ZOOM_record_destroy (ZOOM_record rec)
1335 {
1336     if (!rec)
1337         return;
1338     if (rec->wrbuf_marc)
1339         wrbuf_free (rec->wrbuf_marc, 1);
1340     odr_destroy (rec->odr);
1341     xfree (rec);
1342 }
1343
1344 static const char *record_iconv_return(ZOOM_record rec, int *len,
1345                                        const char *buf, int sz,
1346                                        const char *record_charset)
1347 {
1348     char to[40];
1349     char from[40];
1350     yaz_iconv_t cd = 0;
1351
1352     *from = '\0';
1353     strcpy(to, "UTF-8");
1354     if (record_charset && *record_charset)
1355     {
1356         /* Use "from,to" or just "from" */
1357         const char *cp =strchr(record_charset, ',');
1358         int clen = strlen(record_charset);
1359         if (cp && cp[1])
1360         {
1361             strncpy( to, cp+1, sizeof(to)-1);
1362             to[sizeof(to)-1] = '\0';
1363             clen = cp - record_charset;
1364         }
1365         if (clen > sizeof(from)-1)
1366             clen = sizeof(from)-1;
1367
1368         if (clen)
1369             strncpy(from, record_charset, clen);
1370         from[clen] = '\0';
1371     }
1372
1373     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1374     {
1375         char outbuf[12];
1376         size_t inbytesleft = sz;
1377         const char *inp = buf;
1378
1379         if (!rec->wrbuf_iconv)
1380             rec->wrbuf_iconv = wrbuf_alloc();
1381
1382         wrbuf_rewind(rec->wrbuf_iconv);
1383
1384         while (inbytesleft)
1385         {
1386             size_t outbytesleft = sizeof(outbuf);
1387             char *outp = outbuf;
1388             size_t r = yaz_iconv (cd, (char**) &inp,
1389                                   &inbytesleft,
1390                                   &outp, &outbytesleft);
1391             if (r == (size_t) (-1))
1392             {
1393                 int e = yaz_iconv_error(cd);
1394                 if (e != YAZ_ICONV_E2BIG)
1395                     break;
1396             }
1397             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1398         }
1399         wrbuf_puts(rec->wrbuf_iconv, "");
1400         buf = wrbuf_buf(rec->wrbuf_iconv);
1401         sz = wrbuf_len(rec->wrbuf_iconv);
1402         yaz_iconv_close(cd);
1403     }
1404     if (len)
1405         *len = sz;
1406     return buf;
1407 }
1408
1409 ZOOM_API(const char *)
1410 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1411 {
1412     char type[40];
1413     char charset[40];
1414     const char *cp;
1415     int i;
1416     Z_NamePlusRecord *npr;
1417
1418     if (len)
1419         *len = 0; /* default return */
1420
1421     if (!rec)
1422         return 0;
1423     npr = rec->npr;
1424     if (!npr)
1425         return 0;
1426
1427     cp = type_spec;
1428     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1429     {
1430         if (cp[i] == ';' || cp[i] == ' ')
1431             break;
1432         type[i] = cp[i];
1433     }
1434     type[i] = '\0';
1435     charset[0] = '\0';
1436     if (type_spec[i] == ';')
1437     {
1438         i++;
1439         while (type_spec[i] == ' ')
1440             i++;
1441         if (!strncmp(type_spec+i, "charset=", 8))
1442         {
1443             cp = type_spec+i+8;
1444             for (i = 0; cp[i] && i < sizeof(charset)-1; i++)
1445             {
1446                 if (cp[i] == ';' || cp[i] == ' ')
1447                     break;
1448                 charset[i] = cp[i];
1449             }
1450             charset[i] = '\0';
1451         }
1452     }
1453
1454     if (!strcmp (type, "database"))
1455     {
1456         if (len)
1457             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1458         return npr->databaseName;
1459     }
1460     else if (!strcmp (type, "syntax"))
1461     {
1462         const char *desc = 0;
1463         if (npr->which == Z_NamePlusRecord_databaseRecord)
1464         {
1465             Z_External *r = (Z_External *) npr->u.databaseRecord;
1466             oident *ent = oid_getentbyoid(r->direct_reference);
1467             if (ent)
1468                 desc = ent->desc;
1469         }
1470         if (!desc)
1471             desc = "none";
1472         if (len)
1473             *len = strlen(desc);
1474         return desc;
1475     }
1476     else if (!strcmp (type, "render") &&
1477              npr->which == Z_NamePlusRecord_databaseRecord)
1478     {
1479         Z_External *r = (Z_External *) npr->u.databaseRecord;
1480         oident *ent = oid_getentbyoid(r->direct_reference);
1481
1482         if (r->which == Z_External_sutrs)
1483             return record_iconv_return(rec, len,
1484                                        r->u.sutrs->buf, r->u.sutrs->len,
1485                                        charset);
1486         else if (r->which == Z_External_octet)
1487         {
1488             yaz_marc_t mt;
1489             switch (ent->value)
1490             {
1491             case VAL_SOIF:
1492             case VAL_HTML:
1493             case VAL_SUTRS:
1494                 break;
1495             case VAL_TEXT_XML:
1496             case VAL_APPLICATION_XML:
1497                 break;
1498             default:
1499                 if (!rec->wrbuf_marc)
1500                     rec->wrbuf_marc = wrbuf_alloc();
1501
1502                 mt = yaz_marc_create();
1503                 wrbuf_rewind (rec->wrbuf_marc);
1504                 if (yaz_marc_decode_wrbuf (
1505                         mt, (const char *) r->u.octet_aligned->buf,
1506                         r->u.octet_aligned->len,
1507                         rec->wrbuf_marc) > 0)
1508                 {
1509                     yaz_marc_destroy(mt);
1510                     return record_iconv_return(rec, len,
1511                                                wrbuf_buf(rec->wrbuf_marc),
1512                                                wrbuf_len(rec->wrbuf_marc),
1513                                                charset);
1514                 }
1515                 yaz_marc_destroy(mt);
1516             }
1517             return record_iconv_return(rec, len,
1518                                        (const char *) r->u.octet_aligned->buf,
1519                                        r->u.octet_aligned->len,
1520                                        charset);
1521         }
1522         else if (r->which == Z_External_grs1)
1523         {
1524             if (!rec->wrbuf_marc)
1525                 rec->wrbuf_marc = wrbuf_alloc();
1526             wrbuf_rewind (rec->wrbuf_marc);
1527             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1528             return record_iconv_return(rec, len,
1529                                        wrbuf_buf(rec->wrbuf_marc),
1530                                        wrbuf_len(rec->wrbuf_marc),
1531                                        charset);
1532         }
1533         return 0;
1534     }
1535     else if (npr->which == Z_NamePlusRecord_databaseRecord &&
1536              (!strcmp (type, "xml") || !strcmp(type, "oai")))
1537     {
1538         Z_External *r = (Z_External *) npr->u.databaseRecord;
1539         oident *ent = oid_getentbyoid(r->direct_reference);
1540
1541         if (r->which == Z_External_sutrs)
1542             return record_iconv_return(rec, len,
1543                                        (const char *) r->u.sutrs->buf,
1544                                        r->u.sutrs->len,
1545                                        charset);
1546         else if (r->which == Z_External_octet)
1547         {
1548             yaz_marc_t mt;
1549             int marc_decode_type = YAZ_MARC_MARCXML;
1550
1551             if (!strcmp(type, "oai"))
1552                 marc_decode_type = YAZ_MARC_OAIMARC;
1553             switch (ent->value)
1554             {
1555             case VAL_SOIF:
1556             case VAL_HTML:
1557             case VAL_SUTRS:
1558                 break;
1559             case VAL_TEXT_XML:
1560             case VAL_APPLICATION_XML:
1561                 break;
1562             default:
1563                 if (!rec->wrbuf_marc)
1564                     rec->wrbuf_marc = wrbuf_alloc();
1565                 wrbuf_rewind (rec->wrbuf_marc);
1566                 mt = yaz_marc_create();
1567
1568                 yaz_marc_xml(mt, YAZ_MARC_MARCXML);
1569                 if (yaz_marc_decode_wrbuf (
1570                         mt, (const char *) r->u.octet_aligned->buf,
1571                         r->u.octet_aligned->len,
1572                         rec->wrbuf_marc) > 0)
1573                 {
1574                     yaz_marc_destroy(mt);
1575                     return record_iconv_return(rec, len,
1576                                                wrbuf_buf(rec->wrbuf_marc),
1577                                                wrbuf_len(rec->wrbuf_marc),
1578                                                charset);
1579                 }
1580                 yaz_marc_destroy(mt);
1581             }
1582             return record_iconv_return(rec, len,
1583                                        (const char *) r->u.octet_aligned->buf,
1584                                        r->u.octet_aligned->len,
1585                                        charset);
1586         }
1587         else if (r->which == Z_External_grs1)
1588         {
1589             if (len) *len = 5;
1590             return "GRS-1";
1591         }
1592         else if (r->which == Z_External_OPAC)
1593         {
1594             if (len) *len = 4;
1595             return "OPAC";
1596         }
1597         return 0;
1598     }
1599     else if (!strcmp (type, "raw"))
1600     {
1601         if (npr->which == Z_NamePlusRecord_databaseRecord)
1602         {
1603             Z_External *r = (Z_External *) npr->u.databaseRecord;
1604
1605             if (r->which == Z_External_sutrs)
1606             {
1607                 if (len) *len = r->u.sutrs->len;
1608                 return (const char *) r->u.sutrs->buf;
1609             }
1610             else if (r->which == Z_External_octet)
1611             {
1612                 if (len) *len = r->u.octet_aligned->len;
1613                 return (const char *) r->u.octet_aligned->buf;
1614             }
1615             else /* grs-1, explain, ... */
1616             {
1617                 if (len) *len = -1;
1618                 return (const char *) npr->u.databaseRecord;
1619             }
1620         }
1621         return 0;
1622     }
1623     else if (!strcmp (type, "ext"))
1624     {
1625         if (npr->which == Z_NamePlusRecord_databaseRecord)
1626             return (const char *) npr->u.databaseRecord;
1627         return 0;
1628     }
1629     return 0;
1630 }
1631
1632 static int strcmp_null(const char *v1, const char *v2)
1633 {
1634     if (!v1 && !v2)
1635         return 0;
1636     if (!v1 || !v2)
1637         return -1;
1638     return strcmp(v1, v2);
1639 }
1640
1641 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1642                               int pos)
1643 {
1644     ZOOM_record_cache rc;
1645     const char *elementSetName =
1646         ZOOM_resultset_option_get (r, "elementSetName");
1647     const char *syntax =
1648         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1649
1650     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1651     ZOOM_connection_put_event(r->connection, event);
1652
1653     for (rc = r->record_cache; rc; rc = rc->next)
1654     {
1655         if (pos == rc->pos)
1656         {
1657             if (strcmp_null(r->schema, rc->schema))
1658                 continue;
1659             if (strcmp_null(elementSetName,rc->elementSetName))
1660                 continue;
1661             if (strcmp_null(syntax, rc->syntax))
1662                 continue;
1663             /* not destroying rc->npr (it's handled by nmem )*/
1664             rc->rec.npr = npr;
1665             /* keeping wrbuf_marc too */
1666             return;
1667         }
1668     }
1669     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1670     rc->rec.npr = npr;
1671     rc->rec.odr = 0;
1672     rc->rec.wrbuf_marc = 0;
1673     rc->rec.wrbuf_iconv = 0;
1674     if (elementSetName)
1675         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1676     else
1677         rc->elementSetName = 0;
1678
1679     if (syntax)
1680         rc->syntax = odr_strdup (r->odr, syntax);
1681     else
1682         rc->syntax = 0;
1683
1684     if (r->schema)
1685         rc->schema = odr_strdup (r->odr, r->schema);
1686     else
1687         rc->schema = 0;
1688
1689     rc->pos = pos;
1690     rc->next = r->record_cache;
1691     r->record_cache = rc;
1692 }
1693
1694 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1695 {
1696     ZOOM_record_cache rc;
1697     const char *elementSetName =
1698         ZOOM_resultset_option_get (r, "elementSetName");
1699     const char *syntax =
1700         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1701
1702     for (rc = r->record_cache; rc; rc = rc->next)
1703     {
1704         if (pos == rc->pos)
1705         {
1706             if (strcmp_null(r->schema, rc->schema))
1707                 continue;
1708             if (strcmp_null(elementSetName,rc->elementSetName))
1709                 continue;
1710             if (strcmp_null(syntax, rc->syntax))
1711                 continue;
1712             return &rc->rec;
1713         }
1714     }
1715     return 0;
1716 }
1717
1718 static void handle_records (ZOOM_connection c, Z_Records *sr,
1719                             int present_phase)
1720 {
1721     ZOOM_resultset resultset;
1722
1723     if (!c->tasks)
1724         return ;
1725     switch (c->tasks->which)
1726     {
1727     case ZOOM_TASK_SEARCH:
1728         resultset = c->tasks->u.search.resultset;
1729         break;
1730     case ZOOM_TASK_RETRIEVE:
1731         resultset = c->tasks->u.retrieve.resultset;
1732         break;
1733     default:
1734         return;
1735     }
1736     if (sr && sr->which == Z_Records_NSD)
1737     {
1738         Z_DiagRec dr, *dr_p = &dr;
1739         dr.which = Z_DiagRec_defaultFormat;
1740         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1741
1742         response_diag (c, dr_p);
1743     }
1744     else if (sr && sr->which == Z_Records_multipleNSD)
1745     {
1746         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1747             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1748         else
1749             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1750     }
1751     else
1752     {
1753         if (resultset->count + resultset->start > resultset->size)
1754             resultset->count = resultset->size - resultset->start;
1755         if (resultset->count < 0)
1756             resultset->count = 0;
1757         if (sr && sr->which == Z_Records_DBOSD)
1758         {
1759             int i;
1760             NMEM nmem = odr_extract_mem (c->odr_in);
1761             Z_NamePlusRecordList *p =
1762                 sr->u.databaseOrSurDiagnostics;
1763             for (i = 0; i<p->num_records; i++)
1764             {
1765                 record_cache_add (resultset, p->records[i],
1766                                   i+ resultset->start);
1767             }
1768             /* transfer our response to search_nmem .. we need it later */
1769             nmem_transfer (resultset->odr->mem, nmem);
1770             nmem_destroy (nmem);
1771             if (present_phase && p->num_records == 0)
1772             {
1773                 /* present response and we didn't get any records! */
1774                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1775             }
1776         }
1777         else if (present_phase)
1778         {
1779             /* present response and we didn't get any records! */
1780             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1781         }
1782     }
1783 }
1784
1785 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1786 {
1787     handle_records (c, pr->records, 1);
1788 }
1789
1790 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1791 {
1792     ZOOM_resultset resultset;
1793     ZOOM_Event event;
1794
1795     yaz_log (LOG_DEBUG, "got search response");
1796
1797     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1798         return ;
1799
1800     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
1801     ZOOM_connection_put_event(c, event);
1802
1803     resultset = c->tasks->u.search.resultset;
1804
1805     resultset->size = *sr->resultCount;
1806     handle_records (c, sr->records, 0);
1807 }
1808
1809 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
1810 {
1811     if (res->diagnostics && res->num_diagnostics > 0)
1812         response_diag (c, res->diagnostics[0]);
1813 }
1814
1815 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
1816 {
1817     NMEM nmem = odr_extract_mem (c->odr_in);
1818     ZOOM_scanset scan;
1819
1820     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
1821         return 0;
1822     scan = c->tasks->u.scan.scan;
1823
1824     if (res->entries && res->entries->nonsurrogateDiagnostics)
1825         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
1826     scan->scan_response = res;
1827     nmem_transfer (scan->odr->mem, nmem);
1828     if (res->stepSize)
1829         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
1830     if (res->positionOfTerm)
1831         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
1832     if (res->scanStatus)
1833         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
1834     if (res->numberOfEntriesReturned)
1835         ZOOM_options_set_int (scan->options, "number",
1836                               *res->numberOfEntriesReturned);
1837     nmem_destroy (nmem);
1838     return 1;
1839 }
1840
1841 static zoom_ret send_sort (ZOOM_connection c)
1842 {
1843     ZOOM_resultset  resultset;
1844
1845     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1846         return zoom_complete;
1847
1848     resultset = c->tasks->u.search.resultset;
1849
1850     if (c->error)
1851     {
1852         resultset->r_sort_spec = 0;
1853         return zoom_complete;
1854     }
1855     if (resultset->r_sort_spec)
1856     {
1857         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
1858         Z_SortRequest *req = apdu->u.sortRequest;
1859
1860         req->num_inputResultSetNames = 1;
1861         req->inputResultSetNames = (Z_InternationalString **)
1862             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
1863         req->inputResultSetNames[0] =
1864             odr_strdup (c->odr_out, resultset->setname);
1865         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
1866         req->sortSequence = resultset->r_sort_spec;
1867         resultset->r_sort_spec = 0;
1868         return send_APDU (c, apdu);
1869     }
1870     return zoom_complete;
1871 }
1872
1873 static zoom_ret send_present (ZOOM_connection c)
1874 {
1875     Z_APDU *apdu = 0;
1876     Z_PresentRequest *req = 0;
1877     int i = 0;
1878     const char *syntax = 0;
1879     const char *elementSetName = 0;
1880     ZOOM_resultset  resultset;
1881
1882     if (!c->tasks)
1883         return zoom_complete;
1884
1885     switch (c->tasks->which)
1886     {
1887     case ZOOM_TASK_SEARCH:
1888         resultset = c->tasks->u.search.resultset;
1889         break;
1890     case ZOOM_TASK_RETRIEVE:
1891         resultset = c->tasks->u.retrieve.resultset;
1892         resultset->start = c->tasks->u.retrieve.start;
1893         resultset->count = c->tasks->u.retrieve.count;
1894
1895         if (resultset->start >= resultset->size)
1896             return zoom_complete;
1897         if (resultset->start + resultset->count > resultset->size)
1898             resultset->count = resultset->size - resultset->start;
1899         break;
1900     default:
1901         return zoom_complete;
1902     }
1903
1904     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
1905     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
1906
1907     if (c->error)                  /* don't continue on error */
1908         return zoom_complete;
1909     if (resultset->start < 0)
1910         return zoom_complete;
1911     for (i = 0; i<resultset->count; i++)
1912     {
1913         ZOOM_record rec =
1914             record_cache_lookup (resultset, i + resultset->start);
1915         if (!rec)
1916             break;
1917     }
1918     if (i == resultset->count)
1919         return zoom_complete;
1920
1921     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
1922     req = apdu->u.presentRequest;
1923
1924     resultset->start += i;
1925     resultset->count -= i;
1926     *req->resultSetStartPoint = resultset->start + 1;
1927     *req->numberOfRecordsRequested = resultset->step>0 ?
1928         resultset->step : resultset->count;
1929     assert (*req->numberOfRecordsRequested > 0);
1930
1931     if (syntax && *syntax)
1932         req->preferredRecordSyntax =
1933             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1934
1935     if (resultset->schema && *resultset->schema)
1936     {
1937         Z_RecordComposition *compo = (Z_RecordComposition *)
1938             odr_malloc (c->odr_out, sizeof(*compo));
1939
1940         req->recordComposition = compo;
1941         compo->which = Z_RecordComp_complex;
1942         compo->u.complex = (Z_CompSpec *)
1943             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
1944         compo->u.complex->selectAlternativeSyntax = (bool_t *)
1945             odr_malloc(c->odr_out, sizeof(bool_t));
1946         *compo->u.complex->selectAlternativeSyntax = 0;
1947
1948         compo->u.complex->generic = (Z_Specification *)
1949             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
1950
1951         compo->u.complex->generic->which = Z_Schema_oid;
1952         compo->u.complex->generic->schema.oid = (Odr_oid *)
1953             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
1954
1955         if (!compo->u.complex->generic->schema.oid)
1956         {
1957             /* OID wasn't a schema! Try record syntax instead. */
1958
1959             compo->u.complex->generic->schema.oid = (Odr_oid *)
1960                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
1961         }
1962         if (elementSetName && *elementSetName)
1963         {
1964             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
1965                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
1966             compo->u.complex->generic->elementSpec->which =
1967                 Z_ElementSpec_elementSetName;
1968             compo->u.complex->generic->elementSpec->u.elementSetName =
1969                 odr_strdup (c->odr_out, elementSetName);
1970         }
1971         else
1972             compo->u.complex->generic->elementSpec = 0;
1973         compo->u.complex->num_dbSpecific = 0;
1974         compo->u.complex->dbSpecific = 0;
1975         compo->u.complex->num_recordSyntax = 0;
1976         compo->u.complex->recordSyntax = 0;
1977     }
1978     else if (elementSetName && *elementSetName)
1979     {
1980         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1981             odr_malloc (c->odr_out, sizeof(*esn));
1982         Z_RecordComposition *compo = (Z_RecordComposition *)
1983             odr_malloc (c->odr_out, sizeof(*compo));
1984
1985         esn->which = Z_ElementSetNames_generic;
1986         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
1987         compo->which = Z_RecordComp_simple;
1988         compo->u.simple = esn;
1989         req->recordComposition = compo;
1990     }
1991     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
1992     return send_APDU (c, apdu);
1993 }
1994
1995 ZOOM_API(ZOOM_scanset)
1996 ZOOM_connection_scan (ZOOM_connection c, const char *start)
1997 {
1998     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
1999
2000     scan->connection = c;
2001     scan->odr = odr_createmem (ODR_DECODE);
2002     scan->options = ZOOM_options_create_with_parent (c->options);
2003     scan->refcount = 1;
2004     scan->scan_response = 0;
2005
2006     if ((scan->termListAndStartPoint =
2007          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2008                       start)))
2009     {
2010         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2011         task->u.scan.scan = scan;
2012
2013         (scan->refcount)++;
2014         if (!c->async)
2015         {
2016             while (ZOOM_event (1, &c))
2017                 ;
2018         }
2019     }
2020     return scan;
2021 }
2022
2023 ZOOM_API(void)
2024 ZOOM_scanset_destroy (ZOOM_scanset scan)
2025 {
2026     if (!scan)
2027         return;
2028     (scan->refcount)--;
2029     if (scan->refcount == 0)
2030     {
2031         odr_destroy (scan->odr);
2032
2033         ZOOM_options_destroy (scan->options);
2034         xfree (scan);
2035     }
2036 }
2037
2038 static zoom_ret send_package (ZOOM_connection c)
2039 {
2040     ZOOM_Event event;
2041     if (!c->tasks)
2042         return zoom_complete;
2043     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2044
2045     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2046     ZOOM_connection_put_event (c, event);
2047
2048     return do_write_ex (c, c->tasks->u.package->buf_out,
2049                         c->tasks->u.package->len_out);
2050 }
2051
2052 static zoom_ret send_scan (ZOOM_connection c)
2053 {
2054     ZOOM_scanset scan;
2055     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2056     Z_ScanRequest *req = apdu->u.scanRequest;
2057     if (!c->tasks)
2058         return zoom_complete;
2059     assert (c->tasks->which == ZOOM_TASK_SCAN);
2060     scan = c->tasks->u.scan.scan;
2061
2062     req->termListAndStartPoint = scan->termListAndStartPoint;
2063     req->attributeSet = scan->attributeSet;
2064
2065     *req->numberOfTermsRequested =
2066         ZOOM_options_get_int(scan->options, "number", 10);
2067
2068     req->preferredPositionInResponse =
2069         odr_intdup (c->odr_out,
2070                     ZOOM_options_get_int(scan->options, "position", 1));
2071
2072     req->stepSize =
2073         odr_intdup (c->odr_out,
2074                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2075
2076     req->databaseNames = set_DatabaseNames (c, scan->options,
2077                                             &req->num_databaseNames);
2078
2079     return send_APDU (c, apdu);
2080 }
2081
2082 ZOOM_API(size_t)
2083 ZOOM_scanset_size (ZOOM_scanset scan)
2084 {
2085     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2086         return 0;
2087     return scan->scan_response->entries->num_entries;
2088 }
2089
2090 ZOOM_API(const char *)
2091 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2092                                int *occ, int *len)
2093 {
2094     const char *term = 0;
2095     size_t noent = ZOOM_scanset_size (scan);
2096     Z_ScanResponse *res = scan->scan_response;
2097
2098     *len = 0;
2099     *occ = 0;
2100     if (pos >= noent)
2101         return 0;
2102     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2103     {
2104         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2105
2106         if (t->term->which == Z_Term_general)
2107         {
2108             term = (const char *) t->term->u.general->buf;
2109             *len = t->term->u.general->len;
2110         }
2111         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2112     }
2113     return term;
2114 }
2115
2116 ZOOM_API(const char *)
2117 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2118 {
2119     return ZOOM_options_get (scan->options, key);
2120 }
2121
2122 ZOOM_API(void)
2123 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2124                               const char *val)
2125 {
2126     ZOOM_options_set (scan->options, key, val);
2127 }
2128
2129 static Z_APDU *create_es_package (ZOOM_package p, int type)
2130 {
2131     const char *str;
2132     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2133     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2134
2135     *req->function = Z_ExtendedServicesRequest_create;
2136
2137     str = ZOOM_options_get(p->options, "package-name");
2138     if (str && *str)
2139         req->packageName = nmem_strdup (p->odr_out->mem, str);
2140
2141     str = ZOOM_options_get(p->options, "user-id");
2142     if (str)
2143         req->userId = nmem_strdup (p->odr_out->mem, str);
2144
2145     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2146                                               type);
2147
2148     str = ZOOM_options_get(p->options, "function");
2149     if (str)
2150     {
2151         if (!strcmp (str, "create"))
2152             *req->function = 1;
2153         if (!strcmp (str, "delete"))
2154             *req->function = 2;
2155         if (!strcmp (str, "modify"))
2156             *req->function = 3;
2157     }
2158     return apdu;
2159 }
2160
2161 static const char *ill_array_lookup (void *clientData, const char *idx)
2162 {
2163     ZOOM_package p = (ZOOM_package) clientData;
2164     return ZOOM_options_get (p->options, idx+4);
2165 }
2166
2167 static Z_External *encode_ill_request (ZOOM_package p)
2168 {
2169     ODR out = p->odr_out;
2170     ILL_Request *req;
2171     Z_External *r = 0;
2172     struct ill_get_ctl ctl;
2173
2174     ctl.odr = p->odr_out;
2175     ctl.clientData = p;
2176     ctl.f = ill_array_lookup;
2177
2178     req = ill_get_ILLRequest(&ctl, "ill", 0);
2179
2180     if (!ill_Request (out, &req, 0, 0))
2181     {
2182         int ill_request_size;
2183         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2184         if (ill_request_buf)
2185             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2186         return 0;
2187     }
2188     else
2189     {
2190         oident oid;
2191         int illRequest_size = 0;
2192         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2193
2194         oid.proto = PROTO_GENERAL;
2195         oid.oclass = CLASS_GENERAL;
2196         oid.value = VAL_ISO_ILL_1;
2197
2198         r = (Z_External *) odr_malloc (out, sizeof(*r));
2199         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2200         r->indirect_reference = 0;
2201         r->descriptor = 0;
2202         r->which = Z_External_single;
2203
2204         r->u.single_ASN1_type = (Odr_oct *)
2205             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2206         r->u.single_ASN1_type->buf = (unsigned char*)
2207             odr_malloc (out, illRequest_size);
2208         r->u.single_ASN1_type->len = illRequest_size;
2209         r->u.single_ASN1_type->size = illRequest_size;
2210         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2211     }
2212     return r;
2213 }
2214
2215 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2216 {
2217     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2218     const char *str;
2219
2220     req->which=Z_IOItemOrder_esRequest;
2221     req->u.esRequest = (Z_IORequest *)
2222         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2223
2224     /* to keep part ... */
2225     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2226         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2227     req->u.esRequest->toKeep->supplDescription = 0;
2228     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2229         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2230
2231     str = ZOOM_options_get(p->options, "contact-name");
2232     req->u.esRequest->toKeep->contact->name = str ?
2233         nmem_strdup (p->odr_out->mem, str) : 0;
2234
2235     str = ZOOM_options_get(p->options, "contact-phone");
2236     req->u.esRequest->toKeep->contact->phone = str ?
2237         nmem_strdup (p->odr_out->mem, str) : 0;
2238
2239     str = ZOOM_options_get(p->options, "contact-email");
2240     req->u.esRequest->toKeep->contact->email = str ?
2241         nmem_strdup (p->odr_out->mem, str) : 0;
2242
2243     req->u.esRequest->toKeep->addlBilling = 0;
2244
2245     /* not to keep part ... */
2246     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2247         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2248
2249     str = ZOOM_options_get(p->options, "itemorder-setname");
2250     if (!str)
2251         str = "default";
2252
2253     if (!*str)
2254         req->u.esRequest->notToKeep->resultSetItem = 0;
2255     else
2256     {
2257         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2258            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2259
2260         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2261            nmem_strdup (p->odr_out->mem, str);
2262         req->u.esRequest->notToKeep->resultSetItem->item =
2263             (int *) odr_malloc(p->odr_out, sizeof(int));
2264
2265         str = ZOOM_options_get(p->options, "itemorder-item");
2266         *req->u.esRequest->notToKeep->resultSetItem->item =
2267             (str ? atoi(str) : 1);
2268     }
2269     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2270
2271     return req;
2272 }
2273
2274 ZOOM_API(void)
2275     ZOOM_package_send (ZOOM_package p, const char *type)
2276 {
2277     Z_APDU *apdu = 0;
2278     ZOOM_connection c;
2279     if (!p)
2280         return;
2281     c = p->connection;
2282     odr_reset (p->odr_out);
2283     xfree (p->buf_out);
2284     p->buf_out = 0;
2285     if (!strcmp(type, "itemorder"))
2286     {
2287         Z_External *r;
2288         apdu = create_es_package (p, VAL_ITEMORDER);
2289         if (apdu)
2290         {
2291             r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2292
2293             r->direct_reference =
2294                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2295                                        VAL_ITEMORDER);
2296             r->descriptor = 0;
2297             r->which = Z_External_itemOrder;
2298             r->indirect_reference = 0;
2299             r->u.itemOrder = encode_item_order (p);
2300
2301             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2302         }
2303     }
2304     if (apdu)
2305     {
2306         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2307         {
2308             char *buf;
2309
2310             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2311             task->u.package = p;
2312             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2313             p->buf_out = (char *) xmalloc (p->len_out);
2314             memcpy (p->buf_out, buf, p->len_out);
2315
2316             (p->refcount)++;
2317             if (!c->async)
2318             {
2319                 while (ZOOM_event (1, &c))
2320                     ;
2321             }
2322         }
2323     }
2324 }
2325
2326 ZOOM_API(ZOOM_package)
2327     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2328 {
2329     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2330
2331     p->connection = c;
2332     p->odr_out = odr_createmem (ODR_ENCODE);
2333     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2334     p->refcount = 1;
2335     p->buf_out = 0;
2336     p->len_out = 0;
2337     return p;
2338 }
2339
2340 ZOOM_API(void)
2341     ZOOM_package_destroy(ZOOM_package p)
2342 {
2343     if (!p)
2344         return;
2345     (p->refcount)--;
2346     if (p->refcount == 0)
2347     {
2348         odr_destroy (p->odr_out);
2349         xfree (p->buf_out);
2350
2351         ZOOM_options_destroy (p->options);
2352         xfree (p);
2353     }
2354 }
2355
2356 ZOOM_API(const char *)
2357 ZOOM_package_option_get (ZOOM_package p, const char *key)
2358 {
2359     return ZOOM_options_get (p->options, key);
2360 }
2361
2362
2363 ZOOM_API(void)
2364 ZOOM_package_option_set (ZOOM_package p, const char *key,
2365                               const char *val)
2366 {
2367     ZOOM_options_set (p->options, key, val);
2368 }
2369
2370 static int ZOOM_connection_exec_task (ZOOM_connection c)
2371 {
2372     ZOOM_task task = c->tasks;
2373     zoom_ret ret = zoom_complete;
2374
2375     if (!task)
2376     {
2377         yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task task=<null>");
2378         return 0;
2379     }
2380     yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task type=%d run=%d",
2381              task->which, task->running);
2382     if (c->error != ZOOM_ERROR_NONE)
2383     {
2384         yaz_log (LOG_DEBUG, "remove tasks because of error = %d", c->error);
2385         ZOOM_connection_remove_tasks (c);
2386         return 0;
2387     }
2388     if (task->running)
2389     {
2390         yaz_log (LOG_DEBUG, "task already running");
2391         return 0;
2392     }
2393     task->running = 1;
2394     ret = zoom_complete;
2395     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2396     {
2397         switch (task->which)
2398         {
2399         case ZOOM_TASK_SEARCH:
2400             if (c->proto == PROTO_HTTP)
2401                 ret = ZOOM_connection_srw_send_search(c);
2402             else
2403                 ret = ZOOM_connection_send_search(c);
2404             break;
2405         case ZOOM_TASK_RETRIEVE:
2406             if (c->proto == PROTO_HTTP)
2407                 ret = ZOOM_connection_srw_send_search(c);
2408             else
2409                 ret = send_present (c);
2410             break;
2411         case ZOOM_TASK_CONNECT:
2412             ret = do_connect(c);
2413             break;
2414         case ZOOM_TASK_SCAN:
2415             ret = send_scan(c);
2416             break;
2417         case ZOOM_TASK_PACKAGE:
2418             ret = send_package(c);
2419             break;
2420         }
2421     }
2422     else
2423     {
2424         yaz_log (LOG_DEBUG, "remove tasks because no connection exist");
2425         ZOOM_connection_remove_tasks (c);
2426     }
2427     if (ret == zoom_complete)
2428     {
2429         yaz_log (LOG_DEBUG, "task removed (complete)");
2430         ZOOM_connection_remove_task (c);
2431         return 0;
2432     }
2433     yaz_log (LOG_DEBUG, "task pending");
2434     return 1;
2435 }
2436
2437 static zoom_ret send_sort_present (ZOOM_connection c)
2438 {
2439     zoom_ret r = send_sort (c);
2440     if (r == zoom_complete)
2441         r = send_present (c);
2442     return r;
2443 }
2444
2445 static int es_response (ZOOM_connection c,
2446                         Z_ExtendedServicesResponse *res)
2447 {
2448     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2449         return 0;
2450     if (res->diagnostics && res->num_diagnostics > 0)
2451         response_diag(c, res->diagnostics[0]);
2452     if (res->taskPackage &&
2453         res->taskPackage->which == Z_External_extendedService)
2454     {
2455         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2456         Odr_oct *id = taskPackage->targetReference;
2457
2458         if (id)
2459             ZOOM_options_setl (c->tasks->u.package->options,
2460                                "targetReference", (char*) id->buf, id->len);
2461     }
2462     return 1;
2463 }
2464
2465
2466 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2467 {
2468     Z_InitResponse *initrs;
2469
2470     c->mask = 0;
2471     yaz_log (LOG_DEBUG, "handle_apdu type=%d", apdu->which);
2472     switch(apdu->which)
2473     {
2474     case Z_APDU_initResponse:
2475         initrs = apdu->u.initResponse;
2476         ZOOM_connection_option_set(c, "targetImplementationId",
2477                                    initrs->implementationId ?
2478                                    initrs->implementationId : "");
2479         ZOOM_connection_option_set(c, "targetImplementationName",
2480                                    initrs->implementationName ?
2481                                    initrs->implementationName : "");
2482         ZOOM_connection_option_set(c, "targetImplementationVersion",
2483                                    initrs->implementationVersion ?
2484                                    initrs->implementationVersion : "");
2485         if (!*initrs->result)
2486         {
2487             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0);
2488         }
2489         else
2490         {
2491             char *cookie =
2492                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2493                                           VAL_COOKIE, 1, 0);
2494             xfree (c->cookie_in);
2495             c->cookie_in = 0;
2496             if (cookie)
2497                 c->cookie_in = xstrdup(cookie);
2498             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2499                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2500                 c->support_named_resultsets = 1;
2501             if (c->tasks)
2502             {
2503                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2504                 ZOOM_connection_remove_task (c);
2505             }
2506             ZOOM_connection_exec_task (c);
2507         }
2508         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2509         {
2510             NMEM tmpmem = nmem_create();
2511             Z_CharSetandLanguageNegotiation *p =
2512                 yaz_get_charneg_record(initrs->otherInfo);
2513
2514             if (p)
2515             {
2516                 char *charset=NULL, *lang=NULL;
2517                 int sel;
2518
2519                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2520                 yaz_log(LOG_DEBUG, "Target accepted: charset %s, "
2521                         "language %s, select %d",
2522                         charset ? charset : "none", lang ? lang : "none", sel);
2523                 if (charset)
2524                     ZOOM_connection_option_set (c, "negotiation-charset",
2525                                                 charset);
2526                 if (lang)
2527                     ZOOM_connection_option_set (c, "negotiation-lang",
2528                                                 lang);
2529                 nmem_destroy(tmpmem);
2530             }
2531         }
2532         break;
2533     case Z_APDU_searchResponse:
2534         handle_search_response (c, apdu->u.searchResponse);
2535         if (send_sort_present (c) == zoom_complete)
2536             ZOOM_connection_remove_task (c);
2537         break;
2538     case Z_APDU_presentResponse:
2539         handle_present_response (c, apdu->u.presentResponse);
2540         if (send_present (c) == zoom_complete)
2541             ZOOM_connection_remove_task (c);
2542         break;
2543     case Z_APDU_sortResponse:
2544         sort_response (c, apdu->u.sortResponse);
2545         if (send_present (c) == zoom_complete)
2546             ZOOM_connection_remove_task (c);
2547         break;
2548     case Z_APDU_scanResponse:
2549         scan_response (c, apdu->u.scanResponse);
2550         ZOOM_connection_remove_task (c);
2551         break;
2552     case Z_APDU_extendedServicesResponse:
2553         es_response (c, apdu->u.extendedServicesResponse);
2554         ZOOM_connection_remove_task (c);
2555         break;
2556     case Z_APDU_close:
2557         if (c->reconnect_ok)
2558         {
2559             do_close(c);
2560             c->tasks->running = 0;
2561             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2562         }
2563         else
2564         {
2565             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2566             do_close(c);
2567         }
2568         break;
2569     default:
2570         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2571         do_close(c);
2572     }
2573 }
2574
2575 #if HAVE_XML2
2576 static void handle_srw_response(ZOOM_connection c,
2577                                 Z_SRW_searchRetrieveResponse *res)
2578 {
2579     ZOOM_resultset resultset = 0;
2580     int i;
2581     NMEM nmem;
2582     ZOOM_Event event;
2583
2584     if (!c->tasks)
2585         return;
2586
2587     if (c->tasks->which == ZOOM_TASK_SEARCH)
2588         resultset = c->tasks->u.search.resultset;
2589     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
2590         resultset = c->tasks->u.retrieve.resultset;
2591     else
2592         return ;
2593
2594     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2595     ZOOM_connection_put_event(c, event);
2596
2597     resultset->size = 0;
2598
2599     yaz_log(LOG_DEBUG, "got SRW response OK");
2600
2601     if (res->numberOfRecords)
2602         resultset->size = *res->numberOfRecords;
2603
2604     for (i = 0; i<res->num_records; i++)
2605     {
2606         int pos;
2607
2608         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
2609             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
2610
2611         if (res->records[i].recordPosition &&
2612             *res->records[i].recordPosition > 0)
2613             pos = *res->records[i].recordPosition - 1;
2614         else
2615             pos = resultset->start + i;
2616
2617         npr->databaseName = 0;
2618         npr->which = Z_NamePlusRecord_databaseRecord;
2619         npr->u.databaseRecord = (Z_External *)
2620             odr_malloc(c->odr_in, sizeof(Z_External));
2621         npr->u.databaseRecord->descriptor = 0;
2622         npr->u.databaseRecord->direct_reference =
2623             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
2624         npr->u.databaseRecord->which = Z_External_octet;
2625         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
2626             odr_malloc(c->odr_in, sizeof(Odr_oct));
2627         npr->u.databaseRecord->u.octet_aligned->buf =
2628             res->records[i].recordData_buf;
2629         npr->u.databaseRecord->u.octet_aligned->len =
2630             npr->u.databaseRecord->u.octet_aligned->size =
2631             res->records[i].recordData_len;
2632         record_cache_add (resultset, npr, pos);
2633     }
2634     if (res->num_diagnostics > 0)
2635     {
2636         set_dset_error(c, *res->diagnostics[0].code, "SRW",
2637                        res->diagnostics[0].details, 0);
2638     }
2639     nmem = odr_extract_mem(c->odr_in);
2640     nmem_transfer(resultset->odr->mem, nmem);
2641     nmem_destroy(nmem);
2642 }
2643 #endif
2644
2645 #if HAVE_XML2
2646 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
2647 {
2648     int ret = -1;
2649     const char *content_type = z_HTTP_header_lookup(hres->headers,
2650                                                     "Content-Type");
2651     const char *connection_head = z_HTTP_header_lookup(hres->headers,
2652                                                        "Connection");
2653     c->mask = 0;
2654     yaz_log (LOG_DEBUG, "handle_http");
2655
2656     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
2657     {
2658         Z_SOAP *soap_package = 0;
2659         ODR o = odr_createmem(ODR_DECODE);
2660         Z_SOAP_Handler soap_handlers[2] = {
2661             {"http://www.loc.gov/zing/srw/v1.0/", 0,
2662              (Z_SOAP_fun) yaz_srw_codec},
2663             {0, 0, 0}
2664         };
2665         ret = z_soap_codec(o, &soap_package,
2666                            &hres->content_buf, &hres->content_len,
2667                            soap_handlers);
2668         if (!ret && soap_package->which == Z_SOAP_generic &&
2669             soap_package->u.generic->no == 0)
2670         {
2671             Z_SRW_PDU *sr = soap_package->u.generic->p;
2672             if (sr->which == Z_SRW_searchRetrieve_response)
2673                 handle_srw_response(c, sr->u.response);
2674             else
2675                 ret = -1;
2676         }
2677         else if (!ret && (soap_package->which == Z_SOAP_fault
2678                           || soap_package->which == Z_SOAP_error))
2679         {
2680             set_HTTP_error(c, hres->code,
2681                            soap_package->u.fault->fault_code,
2682                            soap_package->u.fault->fault_string);
2683         }
2684         else
2685             ret = -1;
2686         odr_destroy(o);
2687     }
2688     if (ret)
2689     {
2690         if (hres->code != 200)
2691             set_HTTP_error(c, hres->code, 0, 0);
2692         else
2693             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2694         do_close (c);
2695     }
2696     ZOOM_connection_remove_task(c);
2697     if (!strcmp(hres->version, "1.0"))
2698     {
2699         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
2700         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
2701             do_close(c);
2702     }
2703     else
2704     {
2705         /* HTTP 1.1: only if no close we stay alive .. */
2706         if (connection_head && !strcmp(connection_head, "close"))
2707             do_close(c);
2708     }
2709 }
2710 #endif
2711
2712 static int do_read (ZOOM_connection c)
2713 {
2714     int r;
2715     ZOOM_Event event;
2716
2717     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
2718     ZOOM_connection_put_event (c, event);
2719
2720     yaz_log (LOG_DEBUG, "do_read len=%d", c->len_in);
2721
2722     r = cs_get (c->cs, &c->buf_in, &c->len_in);
2723     if (r == 1)
2724         return 0;
2725     if (r <= 0)
2726     {
2727         if (c->reconnect_ok)
2728         {
2729             do_close (c);
2730             c->reconnect_ok = 0;
2731             yaz_log (LOG_DEBUG, "reconnect read");
2732             c->tasks->running = 0;
2733             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2734         }
2735         else
2736         {
2737             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2738             do_close (c);
2739         }
2740     }
2741     else
2742     {
2743         Z_GDU *gdu;
2744         ZOOM_Event event;
2745
2746         odr_reset (c->odr_in);
2747         odr_setbuf (c->odr_in, c->buf_in, r, 0);
2748         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
2749         ZOOM_connection_put_event (c, event);
2750
2751         if (!z_GDU (c->odr_in, &gdu, 0, 0))
2752         {
2753             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2754             do_close (c);
2755         }
2756         else if (gdu->which == Z_GDU_Z3950)
2757             handle_apdu (c, gdu->u.z3950);
2758         else if (gdu->which == Z_GDU_HTTP_Response)
2759         {
2760 #if HAVE_XML2
2761             handle_http (c, gdu->u.HTTP_Response);
2762 #else
2763             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2764             do_close (c);
2765 #endif
2766         }
2767         c->reconnect_ok = 0;
2768     }
2769     return 1;
2770 }
2771
2772 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
2773 {
2774     int r;
2775     ZOOM_Event event;
2776
2777     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
2778     ZOOM_connection_put_event (c, event);
2779
2780     yaz_log (LOG_DEBUG, "do_write_ex len=%d", len_out);
2781     if ((r=cs_put (c->cs, buf_out, len_out)) < 0)
2782     {
2783         if (c->reconnect_ok)
2784         {
2785             do_close (c);
2786             c->reconnect_ok = 0;
2787             yaz_log (LOG_DEBUG, "reconnect write");
2788             c->tasks->running = 0;
2789             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2790             return zoom_pending;
2791         }
2792         if (c->state == STATE_CONNECTING)
2793             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
2794         else
2795             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2796         do_close (c);
2797         return zoom_complete;
2798     }
2799     else if (r == 1)
2800     {
2801         c->mask = ZOOM_SELECT_EXCEPT;
2802         if (c->cs->io_pending & CS_WANT_WRITE)
2803             c->mask += ZOOM_SELECT_WRITE;
2804         if (c->cs->io_pending & CS_WANT_READ)
2805             c->mask += ZOOM_SELECT_READ;
2806         yaz_log (LOG_DEBUG, "do_write_ex 1 mask=%d", c->mask);
2807     }
2808     else
2809     {
2810         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
2811         yaz_log (LOG_DEBUG, "do_write_ex 2 mask=%d", c->mask);
2812     }
2813     return zoom_pending;
2814 }
2815
2816 static zoom_ret do_write(ZOOM_connection c)
2817 {
2818     return do_write_ex (c, c->buf_out, c->len_out);
2819 }
2820
2821
2822 ZOOM_API(const char *)
2823 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
2824 {
2825     return ZOOM_options_get (c->options, key);
2826 }
2827
2828 ZOOM_API(void)
2829 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
2830                                   const char *val)
2831 {
2832     ZOOM_options_set (c->options, key, val);
2833 }
2834
2835 ZOOM_API(const char *)
2836 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
2837 {
2838     return ZOOM_options_get (r->options, key);
2839 }
2840
2841 ZOOM_API(void)
2842 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
2843                                   const char *val)
2844 {
2845     ZOOM_options_set (r->options, key, val);
2846 }
2847
2848
2849 ZOOM_API(int)
2850 ZOOM_connection_errcode (ZOOM_connection c)
2851 {
2852     return ZOOM_connection_error (c, 0, 0);
2853 }
2854
2855 ZOOM_API(const char *)
2856 ZOOM_connection_errmsg (ZOOM_connection c)
2857 {
2858     const char *msg;
2859     ZOOM_connection_error (c, &msg, 0);
2860     return msg;
2861 }
2862
2863 ZOOM_API(const char *)
2864 ZOOM_connection_addinfo (ZOOM_connection c)
2865 {
2866     const char *addinfo;
2867     ZOOM_connection_error (c, 0, &addinfo);
2868     return addinfo;
2869 }
2870
2871 ZOOM_API(const char *)
2872 ZOOM_diag_str (int error)
2873 {
2874     switch (error)
2875     {
2876     case ZOOM_ERROR_NONE:
2877         return "No error";
2878     case ZOOM_ERROR_CONNECT:
2879         return "Connect failed";
2880     case ZOOM_ERROR_MEMORY:
2881         return "Out of memory";
2882     case ZOOM_ERROR_ENCODE:
2883         return "Encoding failed";
2884     case ZOOM_ERROR_DECODE:
2885         return "Decoding failed";
2886     case ZOOM_ERROR_CONNECTION_LOST:
2887         return "Connection lost";
2888     case ZOOM_ERROR_INIT:
2889         return "Init rejected";
2890     case ZOOM_ERROR_INTERNAL:
2891         return "Internal failure";
2892     case ZOOM_ERROR_TIMEOUT:
2893         return "Timeout";
2894     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
2895         return "Unsupported protocol";
2896     case ZOOM_ERROR_UNSUPPORTED_QUERY:
2897         return "Unsupported query type";
2898     default:
2899         return diagbib1_str (error);
2900     }
2901 }
2902
2903 ZOOM_API(int)
2904 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
2905                          const char **addinfo, const char **diagset)
2906 {
2907     int error = c->error;
2908     if (cp)
2909     {
2910         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
2911             *cp = ZOOM_diag_str(error);
2912         else if (!strcmp(c->diagset, "HTTP"))
2913             *cp = z_HTTP_errmsg(c->error);
2914         else if (!strcmp(c->diagset, "Bib-1"))
2915             *cp = ZOOM_diag_str(error);
2916         else if (!strcmp(c->diagset, "SRW"))
2917             *cp = yaz_diag_srw_str(c->error);
2918         else
2919             *cp = "Unknown error and diagnostic set";
2920     }
2921     if (addinfo)
2922         *addinfo = c->addinfo ? c->addinfo : "";
2923     if (diagset)
2924         *diagset = c->diagset ? c->diagset : "";
2925     return c->error;
2926 }
2927
2928 ZOOM_API(int)
2929 ZOOM_connection_error (ZOOM_connection c, const char **cp,
2930                        const char **addinfo)
2931 {
2932     return ZOOM_connection_error_x(c, cp, addinfo, 0);
2933 }
2934
2935 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
2936 {
2937     ZOOM_Event event = 0;
2938     int r = cs_look(c->cs);
2939     yaz_log (LOG_DEBUG, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
2940              c, mask, r);
2941
2942     if (r == CS_NONE)
2943     {
2944         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
2945         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
2946         do_close (c);
2947         ZOOM_connection_put_event (c, event);
2948     }
2949     else if (r == CS_CONNECT)
2950     {
2951         int ret;
2952         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
2953
2954         ret = cs_rcvconnect (c->cs);
2955         yaz_log (LOG_DEBUG, "cs_rcvconnect returned %d", ret);
2956         if (ret == 1)
2957         {
2958             c->mask = ZOOM_SELECT_EXCEPT;
2959             if (c->cs->io_pending & CS_WANT_WRITE)
2960                 c->mask += ZOOM_SELECT_WRITE;
2961             if (c->cs->io_pending & CS_WANT_READ)
2962                 c->mask += ZOOM_SELECT_READ;
2963             ZOOM_connection_put_event (c, event);
2964         }
2965         else if (ret == 0)
2966         {
2967             ZOOM_connection_put_event (c, event);
2968             if (c->proto == PROTO_Z3950)
2969                 ZOOM_connection_send_init(c);
2970             else
2971             {
2972                 /* no init request for SRW .. */
2973                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2974                 ZOOM_connection_remove_task (c);
2975                 c->mask = 0;
2976                 ZOOM_connection_exec_task (c);
2977             }
2978             c->state = STATE_ESTABLISHED;
2979         }
2980         else
2981         {
2982             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
2983             do_close (c);
2984             ZOOM_connection_put_event (c, event);
2985         }
2986     }
2987     else
2988     {
2989         if (mask & ZOOM_SELECT_READ)
2990             do_read (c);
2991         if (c->cs && (mask & ZOOM_SELECT_WRITE))
2992             do_write (c);
2993     }
2994     return 1;
2995 }
2996
2997 ZOOM_API(int)
2998 ZOOM_connection_last_event(ZOOM_connection cs)
2999 {
3000     if (!cs)
3001         return ZOOM_EVENT_NONE;
3002     return cs->last_event;
3003 }
3004
3005 ZOOM_API(int)
3006 ZOOM_event (int no, ZOOM_connection *cs)
3007 {
3008     int timeout = 5000;
3009 #if HAVE_SYS_POLL_H
3010     struct pollfd pollfds[1024];
3011     ZOOM_connection poll_cs[1024];
3012 #else
3013     struct timeval tv;
3014     fd_set input, output, except;
3015 #endif
3016     int i, r, nfds;
3017     int max_fd = 0;
3018
3019     for (i = 0; i<no; i++)
3020     {
3021         ZOOM_connection c = cs[i];
3022         ZOOM_Event event;
3023         if (c && (event = ZOOM_connection_get_event(c)))
3024         {
3025             ZOOM_Event_destroy (event);
3026             return i+1;
3027         }
3028     }
3029     for (i = 0; i<no; i++)
3030     {
3031         ZOOM_connection c = cs[i];
3032         ZOOM_Event event;
3033         if (c && ZOOM_connection_exec_task (c))
3034         {
3035             if ((event = ZOOM_connection_get_event(c)))
3036             {
3037                 ZOOM_Event_destroy (event);
3038                 return i+1;
3039             }
3040         }
3041     }
3042 #if HAVE_SYS_POLL_H
3043
3044 #else
3045     FD_ZERO (&input);
3046     FD_ZERO (&output);
3047     FD_ZERO (&except);
3048 #endif
3049     nfds = 0;
3050     for (i = 0; i<no; i++)
3051     {
3052         ZOOM_connection c = cs[i];
3053         int fd, mask;
3054         int this_timeout;
3055
3056         if (!c)
3057             continue;
3058         fd = z3950_connection_socket(c);
3059         mask = z3950_connection_mask(c);
3060
3061         if (fd == -1)
3062             continue;
3063         if (max_fd < fd)
3064             max_fd = fd;
3065
3066         this_timeout = ZOOM_options_get_int (c->options, "timeout", -1);
3067         if (this_timeout != -1 && this_timeout < timeout)
3068             timeout = this_timeout;
3069 #if HAVE_SYS_POLL_H
3070         if (mask)
3071         {
3072             short poll_events = 0;
3073
3074             if (mask & ZOOM_SELECT_READ)
3075                 poll_events += POLLIN;
3076             if (mask & ZOOM_SELECT_WRITE)
3077                 poll_events += POLLOUT;
3078             if (mask & ZOOM_SELECT_EXCEPT)
3079                 poll_events += POLLERR;
3080             pollfds[nfds].fd = fd;
3081             pollfds[nfds].events = poll_events;
3082             pollfds[nfds].revents = 0;
3083             poll_cs[nfds] = c;
3084             nfds++;
3085         }
3086 #else
3087         if (mask & ZOOM_SELECT_READ)
3088         {
3089             FD_SET (fd, &input);
3090             nfds++;
3091         }
3092         if (mask & ZOOM_SELECT_WRITE)
3093         {
3094             FD_SET (fd, &output);
3095             nfds++;
3096         }
3097         if (mask & ZOOM_SELECT_EXCEPT)
3098         {
3099             FD_SET (fd, &except);
3100             nfds++;
3101         }
3102 #endif
3103     }
3104     if (timeout >= 5000)
3105         timeout = 30;
3106
3107     if (!nfds)
3108         return 0;
3109
3110 #if HAVE_SYS_POLL_H
3111     r = poll (pollfds, nfds, timeout * 1000);
3112     for (i = 0; i<nfds; i++)
3113     {
3114         ZOOM_connection c = poll_cs[i];
3115         if (r && c->mask)
3116         {
3117             int mask = 0;
3118             if (pollfds[i].revents & POLLIN)
3119                 mask += ZOOM_SELECT_READ;
3120             if (pollfds[i].revents & POLLOUT)
3121                 mask += ZOOM_SELECT_WRITE;
3122             if (pollfds[i].revents & POLLERR)
3123                 mask += ZOOM_SELECT_EXCEPT;
3124             if (mask)
3125                 ZOOM_connection_do_io(c, mask);
3126         }
3127         else if (r == 0 && c->mask)
3128         {
3129             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3130             /* timeout and this connection was waiting */
3131             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3132             do_close (c);
3133             ZOOM_connection_put_event(c, event);
3134         }
3135     }
3136 #else
3137     tv.tv_sec = timeout;
3138     tv.tv_usec = 0;
3139     yaz_log (LOG_DEBUG, "select start");
3140     r = select (max_fd+1, &input, &output, &except, &tv);
3141     yaz_log (LOG_DEBUG, "select stop, returned r=%d", r);
3142     for (i = 0; i<no; i++)
3143     {
3144         ZOOM_connection c = cs[i];
3145         int fd, mask;
3146
3147         if (!c)
3148             continue;
3149         fd = z3950_connection_socket(c);
3150         mask = 0;
3151         if (r && c->mask)
3152         {
3153             /* no timeout and real socket */
3154             if (FD_ISSET(fd, &input))
3155                 mask += ZOOM_SELECT_READ;
3156             if (FD_ISSET(fd, &output))
3157                 mask += ZOOM_SELECT_WRITE;
3158             if (FD_ISSET(fd, &except))
3159                 mask += ZOOM_SELECT_EXCEPT;
3160             if (mask)
3161                 ZOOM_connection_do_io(c, mask);
3162         }
3163         if (r == 0 && c->mask)
3164         {
3165             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3166             /* timeout and this connection was waiting */
3167             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3168             do_close (c);
3169             yaz_log (LOG_DEBUG, "timeout");
3170             ZOOM_connection_put_event(c, event);
3171         }
3172     }
3173 #endif
3174     for (i = 0; i<no; i++)
3175     {
3176         ZOOM_connection c = cs[i];
3177         ZOOM_Event event;
3178         if (c && (event = ZOOM_connection_get_event(c)))
3179         {
3180             ZOOM_Event_destroy (event);
3181             return i+1;
3182         }
3183     }
3184     return 0;
3185 }