src/zoom-c.c

   1 /*
   2  * Copyright (C) 1995-2006, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.87 2006-08-25 14:57:04 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include "zoom-p.h"
  16
  17 #include <yaz/yaz-util.h>
  18 #include <yaz/xmalloc.h>
  19 #include <yaz/otherinfo.h>
  20 #include <yaz/log.h>
  21 #include <yaz/pquery.h>
  22 #include <yaz/marcdisp.h>
  23 #include <yaz/diagbib1.h>
  24 #include <yaz/charneg.h>
  25 #include <yaz/ill.h>
  26 #include <yaz/srw.h>
  27 #include <yaz/cql.h>
  28 #include <yaz/ccl.h>
  29
  30 #if HAVE_SYS_TYPES_H
  31 #include <sys/types.h>
  32 #endif
  33 #if HAVE_SYS_TIME_H
  34 #include <sys/time.h>
  35 #endif
  36 #if HAVE_SYS_POLL_H
  37 #include <sys/poll.h>
  38 #endif
  39 #if HAVE_SYS_SELECT_H
  40 #include <sys/select.h>
  41 #endif
  42 #ifdef WIN32
  43 #include <winsock.h>
  44 #endif
  45
  46 static int log_api = 0;
  47 static int log_details = 0;
  48
  49 typedef enum {
  50     zoom_pending,
  51     zoom_complete
  52 } zoom_ret;
  53
  54 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
  55 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  56 static char *cql2pqf(ZOOM_connection c, const char *cql);
  57
  58 static void initlog()
  59 {
  60     static int log_level_initialized = 0;
  61     if (!log_level_initialized)
  62     {
  63         log_api = yaz_log_module_level("zoom");
  64         log_details = yaz_log_module_level("zoomdetails");
  65         log_level_initialized = 1;
  66     }
  67 }
  68
  69 static ZOOM_Event ZOOM_Event_create(int kind)
  70 {
  71     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  72     event->kind = kind;
  73     event->next = 0;
  74     event->prev = 0;
  75     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
  76     return event;
  77 }
  78
  79 static void ZOOM_Event_destroy(ZOOM_Event event)
  80 {
  81     xfree(event);
  82 }
  83
  84 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
  85 {
  86     if (c->m_queue_back)
  87     {
  88         c->m_queue_back->prev = event;
  89         assert(c->m_queue_front);
  90     }
  91     else
  92     {
  93         assert(!c->m_queue_front);
  94         c->m_queue_front = event;
  95     }
  96     event->next = c->m_queue_back;
  97     event->prev = 0;
  98     c->m_queue_back = event;
  99 }
 100
 101 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 102 {
 103     ZOOM_Event event = c->m_queue_front;
 104     if (!event)
 105     {
 106         c->last_event = ZOOM_EVENT_NONE;
 107         return 0;
 108     }
 109     assert(c->m_queue_back);
 110     c->m_queue_front = event->prev;
 111     if (c->m_queue_front)
 112     {
 113         assert(c->m_queue_back);
 114         c->m_queue_front->next = 0;
 115     }
 116     else
 117         c->m_queue_back = 0;
 118     c->last_event = event->kind;
 119     return event;
 120 }
 121
 122
 123 static void set_dset_error(ZOOM_connection c, int error,
 124                            const char *dset,
 125                            const char *addinfo, const char *addinfo2)
 126 {
 127     char *cp;
 128
 129     xfree(c->addinfo);
 130     c->addinfo = 0;
 131     c->error = error;
 132     if (!c->diagset || strcmp(dset, c->diagset))
 133     {
 134         xfree(c->diagset);
 135         c->diagset = xstrdup(dset);
 136         /* remove integer part from SRW diagset .. */
 137         if ((cp = strrchr(c->diagset, '/')))
 138             *cp = '\0';
 139     }
 140     if (addinfo && addinfo2)
 141     {
 142         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 143         strcpy(c->addinfo, addinfo);
 144         strcat(c->addinfo, addinfo2);
 145     }
 146     else if (addinfo)
 147         c->addinfo = xstrdup(addinfo);
 148     if (error)
 149         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 150                 c, c->host_port ? c->host_port : "<>", dset, error,
 151                 addinfo ? addinfo : "",
 152                 addinfo2 ? addinfo2 : "");
 153 }
 154
 155 #if YAZ_HAVE_XML2
 156 static void set_HTTP_error(ZOOM_connection c, int error,
 157                            const char *addinfo, const char *addinfo2)
 158 {
 159     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 160 }
 161 #endif
 162
 163 static void set_ZOOM_error(ZOOM_connection c, int error,
 164                            const char *addinfo)
 165 {
 166     set_dset_error(c, error, "ZOOM", addinfo, 0);
 167 }
 168
 169 static void clear_error(ZOOM_connection c)
 170 {
 171     /*
 172      * If an error is tied to an operation then it's ok to clear: for
 173      * example, a diagnostic returned from a search is cleared by a
 174      * subsequent search.  However, problems such as Connection Lost
 175      * or Init Refused are not cleared, because they are not
 176      * recoverable: doing another search doesn't help.
 177      */
 178     switch (c->error)
 179     {
 180     case ZOOM_ERROR_CONNECT:
 181     case ZOOM_ERROR_MEMORY:
 182     case ZOOM_ERROR_DECODE:
 183     case ZOOM_ERROR_CONNECTION_LOST:
 184     case ZOOM_ERROR_INIT:
 185     case ZOOM_ERROR_INTERNAL:
 186     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 187         break;
 188     default:
 189         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 190     }
 191 }
 192
 193 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 194 {
 195     ZOOM_task *taskp = &c->tasks;
 196     while (*taskp)
 197         taskp = &(*taskp)->next;
 198     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 199     (*taskp)->running = 0;
 200     (*taskp)->which = which;
 201     (*taskp)->next = 0;
 202     clear_error(c);
 203     return *taskp;
 204 }
 205
 206 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 207 {
 208     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 209
 210     task->next = c->tasks;
 211     c->tasks = task;
 212
 213     task->running = 0;
 214     task->which = which;
 215     clear_error(c);
 216     return task;
 217 }
 218
 219 void ZOOM_connection_remove_task(ZOOM_connection c)
 220 {
 221     ZOOM_task task = c->tasks;
 222
 223     if (task)
 224     {
 225         c->tasks = task->next;
 226         switch (task->which)
 227         {
 228         case ZOOM_TASK_SEARCH:
 229             ZOOM_resultset_destroy(task->u.search.resultset);
 230             break;
 231         case ZOOM_TASK_RETRIEVE:
 232             ZOOM_resultset_destroy(task->u.retrieve.resultset);
 233             break;
 234         case ZOOM_TASK_CONNECT:
 235             break;
 236         case ZOOM_TASK_SCAN:
 237             ZOOM_scanset_destroy(task->u.scan.scan);
 238             break;
 239         case ZOOM_TASK_PACKAGE:
 240             ZOOM_package_destroy(task->u.package);
 241             break;
 242         case ZOOM_TASK_SORT:
 243             ZOOM_resultset_destroy(task->u.sort.resultset);
 244             ZOOM_query_destroy(task->u.sort.q);
 245             break;
 246         default:
 247             assert(0);
 248         }
 249         xfree(task);
 250
 251         if (!c->tasks)
 252         {
 253             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 254             ZOOM_connection_put_event(c, event);
 255         }
 256     }
 257 }
 258
 259 static int ZOOM_connection_exec_task(ZOOM_connection c);
 260
 261 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 262 {
 263     while (c->tasks)
 264         ZOOM_connection_remove_task(c);
 265 }
 266
 267 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos);
 268
 269 ZOOM_API(ZOOM_connection)
 270     ZOOM_connection_create(ZOOM_options options)
 271 {
 272     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 273
 274     initlog();
 275
 276     yaz_log(log_api, "%p ZOOM_connection_create", c);
 277
 278     c->proto = PROTO_Z3950;
 279     c->cs = 0;
 280     c->mask = 0;
 281     c->reconnect_ok = 0;
 282     c->state = STATE_IDLE;
 283     c->addinfo = 0;
 284     c->diagset = 0;
 285     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 286     c->buf_in = 0;
 287     c->len_in = 0;
 288     c->buf_out = 0;
 289     c->len_out = 0;
 290     c->resultsets = 0;
 291
 292     c->options = ZOOM_options_create_with_parent(options);
 293
 294     c->host_port = 0;
 295     c->path = 0;
 296     c->proxy = 0;
 297
 298     c->charset = c->lang = 0;
 299
 300     c->cookie_out = 0;
 301     c->cookie_in = 0;
 302     c->client_IP = 0;
 303     c->tasks = 0;
 304
 305     c->odr_in = odr_createmem(ODR_DECODE);
 306     c->odr_out = odr_createmem(ODR_ENCODE);
 307
 308     c->async = 0;
 309     c->support_named_resultsets = 0;
 310     c->last_event = ZOOM_EVENT_NONE;
 311
 312     c->m_queue_front = 0;
 313     c->m_queue_back = 0;
 314     return c;
 315 }
 316
 317 /* set database names. Take local databases (if set); otherwise
 318    take databases given in ZURL (if set); otherwise use Default */
 319 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 320                                 int *num)
 321 {
 322     char **databaseNames;
 323     const char *cp = ZOOM_options_get(options, "databaseName");
 324
 325     if ((!cp || !*cp) && con->host_port)
 326     {
 327         if (strncmp(con->host_port, "unix:", 5) == 0)
 328             cp = strchr(con->host_port+5, ':');
 329         else
 330             cp = strchr(con->host_port, '/');
 331         if (cp)
 332             cp++;
 333     }
 334     if (!cp)
 335         cp = "Default";
 336     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 337     return databaseNames;
 338 }
 339
 340 ZOOM_API(ZOOM_connection)
 341     ZOOM_connection_new(const char *host, int portnum)
 342 {
 343     ZOOM_connection c = ZOOM_connection_create(0);
 344
 345     ZOOM_connection_connect(c, host, portnum);
 346     return c;
 347 }
 348
 349 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 350 {
 351     if (!s || !*s)
 352         return zoom_sru_soap;
 353     if (!yaz_matchstr(s, "soap"))
 354         return zoom_sru_soap;
 355     else if (!yaz_matchstr(s, "get"))
 356         return zoom_sru_get;
 357     else if (!yaz_matchstr(s, "post"))
 358         return zoom_sru_post;
 359     return zoom_sru_error;
 360 }
 361
 362 ZOOM_API(void)
 363     ZOOM_connection_connect(ZOOM_connection c,
 364                             const char *host, int portnum)
 365 {
 366     const char *val;
 367     ZOOM_task task;
 368
 369     initlog();
 370
 371     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 372             c, host, portnum);
 373
 374     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 375     ZOOM_connection_remove_tasks(c);
 376
 377     if (c->cs)
 378     {
 379         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 380         c->reconnect_ok = 1;
 381         return;
 382     }
 383     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 384     xfree(c->proxy);
 385     val = ZOOM_options_get(c->options, "proxy");
 386     if (val && *val)
 387     {
 388         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 389         c->proxy = xstrdup(val);
 390     }
 391     else
 392         c->proxy = 0;
 393
 394     xfree(c->charset);
 395     val = ZOOM_options_get(c->options, "charset");
 396     if (val && *val)
 397     {
 398         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 399         c->charset = xstrdup(val);
 400     }
 401     else
 402         c->charset = 0;
 403
 404     xfree(c->lang);
 405     val = ZOOM_options_get(c->options, "lang");
 406     if (val && *val)
 407     {
 408         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 409         c->lang = xstrdup(val);
 410     }
 411     else
 412         c->lang = 0;
 413
 414     val = ZOOM_options_get(c->options, "sru");
 415     c->sru_mode = get_sru_mode_from_string(val);
 416
 417     xfree(c->host_port);
 418     if (portnum)
 419     {
 420         char hostn[128];
 421         sprintf(hostn, "%.80s:%d", host, portnum);
 422         c->host_port = xstrdup(hostn);
 423     }
 424     else
 425         c->host_port = xstrdup(host);
 426
 427     {
 428         /*
 429          * If the "<scheme>:" part of the host string is preceded by one
 430          * or more comma-separated <name>=<value> pairs, these are taken
 431          * to be options to be set on the connection object.  Among other
 432          * applications, this facility can be used to embed authentication
 433          * in a host string:
 434          *          user=admin,password=secret,tcp:localhost:9999
 435          */
 436         char *remainder = c->host_port;
 437         char *pcolon = strchr(remainder, ':');
 438         char *pcomma;
 439         char *pequals;
 440         while ((pcomma = strchr(remainder, ',')) != 0 &&
 441                (pcolon == 0 || pcomma < pcolon)) {
 442             *pcomma = '\0';
 443             if ((pequals = strchr(remainder, '=')) != 0) {
 444                 *pequals = '\0';
 445                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 446                 ZOOM_connection_option_set(c, remainder, pequals+1);
 447             }
 448             remainder = pcomma+1;
 449         }
 450
 451         if (remainder != c->host_port) {
 452             xfree(c->host_port);
 453             c->host_port = xstrdup(remainder);
 454             /*printf("# reset hp='%s'\n", remainder);*/
 455         }
 456     }
 457
 458     ZOOM_options_set(c->options, "host", c->host_port);
 459
 460     val = ZOOM_options_get(c->options, "cookie");
 461     if (val && *val)
 462     {
 463         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 464         c->cookie_out = xstrdup(val);
 465     }
 466
 467     val = ZOOM_options_get(c->options, "clientIP");
 468     if (val && *val)
 469     {
 470         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 471                 c, val);
 472         c->client_IP = xstrdup(val);
 473     }
 474
 475     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 476     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 477
 478     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 479
 480     if (!c->async)
 481     {
 482         while (ZOOM_event(1, &c))
 483             ;
 484     }
 485 }
 486
 487 ZOOM_API(ZOOM_query)
 488     ZOOM_query_create(void)
 489 {
 490     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 491
 492     yaz_log(log_details, "%p ZOOM_query_create", s);
 493     s->refcount = 1;
 494     s->z_query = 0;
 495     s->sort_spec = 0;
 496     s->odr = odr_createmem(ODR_ENCODE);
 497     s->query_string = 0;
 498
 499     return s;
 500 }
 501
 502 ZOOM_API(void)
 503     ZOOM_query_destroy(ZOOM_query s)
 504 {
 505     if (!s)
 506         return;
 507
 508     (s->refcount)--;
 509     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 510     if (s->refcount == 0)
 511     {
 512         odr_destroy(s->odr);
 513         xfree(s);
 514     }
 515 }
 516
 517 ZOOM_API(int)
 518     ZOOM_query_prefix(ZOOM_query s, const char *str)
 519 {
 520     s->query_string = odr_strdup(s->odr, str);
 521     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 522     s->z_query->which = Z_Query_type_1;
 523     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 524     if (!s->z_query->u.type_1)
 525     {
 526         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 527         s->z_query = 0;
 528         return -1;
 529     }
 530     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 531     return 0;
 532 }
 533
 534 ZOOM_API(int)
 535     ZOOM_query_cql(ZOOM_query s, const char *str)
 536 {
 537     Z_External *ext;
 538
 539     s->query_string = odr_strdup(s->odr, str);
 540
 541     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 542     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 543     ext->indirect_reference = 0;
 544     ext->descriptor = 0;
 545     ext->which = Z_External_CQL;
 546     ext->u.cql = s->query_string;
 547
 548     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 549     s->z_query->which = Z_Query_type_104;
 550     s->z_query->u.type_104 =  ext;
 551
 552     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 553
 554     return 0;
 555 }
 556
 557 /*
 558  * Translate the CQL string client-side into RPN which is passed to
 559  * the server.  This is useful for server's that don't themselves
 560  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 561  * only as a place to stash diagnostics if compilation fails; if this
 562  * information is not needed, a null pointer may be used.
 563  */
 564 ZOOM_API(int)
 565     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 566 {
 567     char *rpn;
 568     int ret;
 569     ZOOM_connection freeme = 0;
 570
 571     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 572     if (conn == 0)
 573         conn = freeme = ZOOM_connection_create(0);
 574
 575     rpn = cql2pqf(conn, str);
 576     if (freeme != 0)
 577         ZOOM_connection_destroy(freeme);
 578     if (rpn == 0)
 579         return -1;
 580
 581     ret = ZOOM_query_prefix(s, rpn);
 582     xfree(rpn);
 583     return ret;
 584 }
 585
 586 /*
 587  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 588  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 589  * to the server, as the YAZ GFS doesn't know how to handle this.
 590  */
 591 ZOOM_API(int)
 592     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 593                        int *ccl_error, const char **error_string,
 594                        int *error_pos)
 595 {
 596     int ret;
 597     struct ccl_rpn_node *rpn;
 598     CCL_bibset bibset = ccl_qual_mk();
 599
 600     if (config)
 601         ccl_qual_buf(bibset, config);
 602
 603     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 604     if (!rpn)
 605     {
 606         *error_string = ccl_err_msg(*ccl_error);
 607         ret = -1;
 608     }
 609     else
 610     {
 611         WRBUF wr = wrbuf_alloc();
 612         ccl_pquery(wr, rpn);
 613         ccl_rpn_delete(rpn);
 614         ret = ZOOM_query_prefix(s, wrbuf_buf(wr));
 615         wrbuf_free(wr, 1);
 616     }
 617     ccl_qual_rm(&bibset);
 618     return ret;
 619 }
 620
 621 ZOOM_API(int)
 622     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 623 {
 624     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 625     if (!s->sort_spec)
 626     {
 627         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 628                 s, criteria);
 629         return -1;
 630     }
 631     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 632     return 0;
 633 }
 634
 635 static zoom_ret do_write(ZOOM_connection c);
 636
 637 ZOOM_API(void)
 638     ZOOM_connection_destroy(ZOOM_connection c)
 639 {
 640     ZOOM_resultset r;
 641     if (!c)
 642         return;
 643     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 644     if (c->cs)
 645         cs_close(c->cs);
 646     for (r = c->resultsets; r; r = r->next)
 647         r->connection = 0;
 648
 649     xfree(c->buf_in);
 650     xfree(c->addinfo);
 651     xfree(c->diagset);
 652     odr_destroy(c->odr_in);
 653     odr_destroy(c->odr_out);
 654     ZOOM_options_destroy(c->options);
 655     ZOOM_connection_remove_tasks(c);
 656     xfree(c->host_port);
 657     xfree(c->path);
 658     xfree(c->proxy);
 659     xfree(c->charset);
 660     xfree(c->lang);
 661     xfree(c->cookie_out);
 662     xfree(c->cookie_in);
 663     xfree(c->client_IP);
 664     xfree(c);
 665 }
 666
 667 void ZOOM_resultset_addref(ZOOM_resultset r)
 668 {
 669     if (r)
 670     {
 671         (r->refcount)++;
 672         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 673                 r, r->refcount);
 674     }
 675 }
 676
 677 ZOOM_resultset ZOOM_resultset_create()
 678 {
 679     int i;
 680     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 681
 682     initlog();
 683
 684     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 685     r->refcount = 1;
 686     r->size = 0;
 687     r->odr = odr_createmem(ODR_ENCODE);
 688     r->piggyback = 1;
 689     r->setname = 0;
 690     r->schema = 0;
 691     r->step = 0;
 692     for (i = 0; i<RECORD_HASH_SIZE; i++)
 693         r->record_hash[i] = 0;
 694     r->r_sort_spec = 0;
 695     r->query = 0;
 696     r->connection = 0;
 697     r->next = 0;
 698     return r;
 699 }
 700
 701 ZOOM_API(ZOOM_resultset)
 702     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 703 {
 704     ZOOM_resultset r;
 705     ZOOM_query s = ZOOM_query_create();
 706
 707     ZOOM_query_prefix(s, q);
 708
 709     r = ZOOM_connection_search(c, s);
 710     ZOOM_query_destroy(s);
 711     return r;
 712 }
 713
 714 ZOOM_API(ZOOM_resultset)
 715     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 716 {
 717     ZOOM_resultset r = ZOOM_resultset_create();
 718     ZOOM_task task;
 719     const char *cp;
 720     int start, count;
 721
 722     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 723     r->r_sort_spec = q->sort_spec;
 724     r->query = q;
 725
 726     r->options = ZOOM_options_create_with_parent(c->options);
 727
 728     start = ZOOM_options_get_int(r->options, "start", 0);
 729     count = ZOOM_options_get_int(r->options, "count", 0);
 730     {
 731         /* If "presentChunk" is defined use that; otherwise "step" */
 732         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 733         r->step = ZOOM_options_get_int(r->options,
 734                                        (cp != 0 ? "presentChunk": "step"), 0);
 735     }
 736     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 737     cp = ZOOM_options_get(r->options, "setname");
 738     if (cp)
 739         r->setname = xstrdup(cp);
 740     cp = ZOOM_options_get(r->options, "schema");
 741     if (cp)
 742         r->schema = xstrdup(cp);
 743
 744     r->connection = c;
 745
 746     r->next = c->resultsets;
 747     c->resultsets = r;
 748
 749     if (c->host_port && c->proto == PROTO_HTTP)
 750     {
 751         if (!c->cs)
 752         {
 753             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 754             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 755         }
 756         else
 757         {
 758             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 759             c->reconnect_ok = 1;
 760         }
 761     }
 762
 763     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 764     task->u.search.resultset = r;
 765     task->u.search.start = start;
 766     task->u.search.count = count;
 767     ZOOM_resultset_addref(r);
 768
 769     (q->refcount)++;
 770
 771     if (!c->async)
 772     {
 773         while (ZOOM_event(1, &c))
 774             ;
 775     }
 776     return r;
 777 }
 778
 779 /*
 780  * This is the old result-set sorting API, which is maintained only
 781  * for the sake of binary compatibility.  There is no reason ever to
 782  * use this rather than ZOOM_resultset_sort1().
 783  */
 784 ZOOM_API(void)
 785     ZOOM_resultset_sort(ZOOM_resultset r,
 786                         const char *sort_type, const char *sort_spec)
 787 {
 788     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 789 }
 790
 791 ZOOM_API(int)
 792     ZOOM_resultset_sort1(ZOOM_resultset r,
 793                          const char *sort_type, const char *sort_spec)
 794 {
 795     ZOOM_connection c = r->connection;
 796     ZOOM_task task;
 797     ZOOM_query newq;
 798
 799     newq = ZOOM_query_create();
 800     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 801         return -1;
 802
 803     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 804             r, r, sort_type, sort_spec);
 805     if (!c)
 806         return 0;
 807
 808     if (c->host_port && c->proto == PROTO_HTTP)
 809     {
 810         if (!c->cs)
 811         {
 812             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 813             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 814         }
 815         else
 816         {
 817             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 818                     r);
 819             c->reconnect_ok = 1;
 820         }
 821     }
 822
 823     ZOOM_resultset_cache_reset(r);
 824     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 825     task->u.sort.resultset = r;
 826     task->u.sort.q = newq;
 827
 828     ZOOM_resultset_addref(r);
 829
 830     if (!c->async)
 831     {
 832         while (ZOOM_event(1, &c))
 833             ;
 834     }
 835
 836     return 0;
 837 }
 838
 839 ZOOM_API(void)
 840     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 841 {
 842     int i;
 843     for (i = 0; i<RECORD_HASH_SIZE; i++)
 844     {
 845         ZOOM_record_cache rc;
 846         for (rc = r->record_hash[i]; rc; rc = rc->next)
 847         {
 848             if (rc->rec.wrbuf_marc)
 849                 wrbuf_free(rc->rec.wrbuf_marc, 1);
 850             if (rc->rec.wrbuf_iconv)
 851                 wrbuf_free(rc->rec.wrbuf_iconv, 1);
 852             if (rc->rec.wrbuf_opac)
 853                 wrbuf_free(rc->rec.wrbuf_opac, 1);
 854         }
 855         r->record_hash[i] = 0;
 856     }
 857 }
 858
 859 ZOOM_API(void)
 860     ZOOM_resultset_destroy(ZOOM_resultset r)
 861 {
 862     if (!r)
 863         return;
 864     (r->refcount)--;
 865     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 866             r, r, r->refcount);
 867     if (r->refcount == 0)
 868     {
 869         ZOOM_resultset_cache_reset(r);
 870
 871         if (r->connection)
 872         {
 873             /* remove ourselves from the resultsets in connection */
 874             ZOOM_resultset *rp = &r->connection->resultsets;
 875             while (1)
 876             {
 877                 assert(*rp);   /* we must be in this list!! */
 878                 if (*rp == r)
 879                 {   /* OK, we're here - take us out of it */
 880                     *rp = (*rp)->next;
 881                     break;
 882                 }
 883                 rp = &(*rp)->next;
 884             }
 885         }
 886         ZOOM_query_destroy(r->query);
 887         ZOOM_options_destroy(r->options);
 888         odr_destroy(r->odr);
 889         xfree(r->setname);
 890         xfree(r->schema);
 891         xfree(r);
 892     }
 893 }
 894
 895 ZOOM_API(size_t)
 896     ZOOM_resultset_size(ZOOM_resultset r)
 897 {
 898     return r->size;
 899 }
 900
 901 static void do_close(ZOOM_connection c)
 902 {
 903     if (c->cs)
 904         cs_close(c->cs);
 905     c->cs = 0;
 906     c->mask = 0;
 907     c->state = STATE_IDLE;
 908 }
 909
 910 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
 911                                     int force_sync, int start, int count)
 912 {
 913     ZOOM_task task;
 914     ZOOM_connection c;
 915     const char *cp;
 916
 917     if (!r)
 918         return;
 919     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 920             " count=%d", r, force_sync, start, count);
 921     c = r->connection;
 922     if (!c)
 923         return;
 924
 925     if (c->host_port && c->proto == PROTO_HTTP)
 926     {
 927         if (!c->cs)
 928         {
 929             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 930             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 931         }
 932         else
 933         {
 934             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 935                     "reconnect", r);
 936             c->reconnect_ok = 1;
 937         }
 938     }
 939     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
 940     task->u.retrieve.resultset = r;
 941     task->u.retrieve.start = start;
 942     task->u.retrieve.count = count;
 943
 944     cp = ZOOM_options_get(r->options, "schema");
 945     if (cp)
 946     {
 947         if (!r->schema || strcmp(r->schema, cp))
 948         {
 949             xfree(r->schema);
 950             r->schema = xstrdup(cp);
 951         }
 952     }
 953
 954     ZOOM_resultset_addref(r);
 955
 956     if (!r->connection->async || force_sync)
 957         while (r->connection && ZOOM_event(1, &r->connection))
 958             ;
 959 }
 960
 961 ZOOM_API(void)
 962     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
 963                            size_t start, size_t count)
 964 {
 965     int force_present = 0;
 966
 967     if (!r)
 968         return ;
 969     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
 970             r, r, (long) start, (long) count);
 971     if (count && recs)
 972         force_present = 1;
 973     ZOOM_resultset_retrieve(r, force_present, start, count);
 974     if (force_present)
 975     {
 976         size_t i;
 977         for (i = 0; i< count; i++)
 978             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
 979     }
 980 }
 981
 982 static void get_cert(ZOOM_connection c)
 983 {
 984     char *cert_buf;
 985     int cert_len;
 986
 987     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 988     {
 989         ZOOM_connection_option_setl(c, "sslPeerCert",
 990                                     cert_buf, cert_len);
 991         xfree(cert_buf);
 992     }
 993 }
 994
 995 static zoom_ret do_connect(ZOOM_connection c)
 996 {
 997     void *add;
 998     const char *effective_host;
 999
1000     if (c->proxy)
1001         effective_host = c->proxy;
1002     else
1003         effective_host = c->host_port;
1004
1005     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1006
1007     if (c->cs)
1008         cs_close(c->cs);
1009     c->cs = cs_create_host(effective_host, 0, &add);
1010
1011     if (c->cs && c->cs->protocol == PROTO_HTTP)
1012     {
1013 #if YAZ_HAVE_XML2
1014         const char *path = 0;
1015
1016         c->proto = PROTO_HTTP;
1017         cs_get_host_args(c->host_port, &path);
1018         xfree(c->path);
1019         c->path = (char*) xmalloc(strlen(path)+2);
1020         c->path[0] = '/';
1021         strcpy(c->path+1, path);
1022 #else
1023         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1024         do_close(c);
1025         return zoom_complete;
1026 #endif
1027     }
1028     if (c->cs)
1029     {
1030         int ret = cs_connect(c->cs, add);
1031         if (ret == 0)
1032         {
1033             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1034             ZOOM_connection_put_event(c, event);
1035             get_cert(c);
1036             if (c->proto == PROTO_Z3950)
1037                 ZOOM_connection_send_init(c);
1038             else
1039             {
1040                 /* no init request for SRW .. */
1041                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1042                 ZOOM_connection_remove_task(c);
1043                 c->mask = 0;
1044                 ZOOM_connection_exec_task(c);
1045             }
1046             c->state = STATE_ESTABLISHED;
1047             return zoom_pending;
1048         }
1049         else if (ret > 0)
1050         {
1051             c->state = STATE_CONNECTING;
1052             c->mask = ZOOM_SELECT_EXCEPT;
1053             if (c->cs->io_pending & CS_WANT_WRITE)
1054                 c->mask += ZOOM_SELECT_WRITE;
1055             if (c->cs->io_pending & CS_WANT_READ)
1056                 c->mask += ZOOM_SELECT_READ;
1057             return zoom_pending;
1058         }
1059     }
1060     c->state = STATE_IDLE;
1061     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1062     return zoom_complete;
1063 }
1064
1065 int z3950_connection_socket(ZOOM_connection c)
1066 {
1067     if (c->cs)
1068         return cs_fileno(c->cs);
1069     return -1;
1070 }
1071
1072 int z3950_connection_mask(ZOOM_connection c)
1073 {
1074     if (c->cs)
1075         return c->mask;
1076     return 0;
1077 }
1078
1079 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1080 {
1081     int i;
1082     for (i = 0; i<200; i++)
1083     {
1084         size_t len;
1085         Z_OtherInformation **oi;
1086         char buf[80];
1087         const char *val;
1088         const char *cp;
1089         int oidval;
1090
1091         sprintf(buf, "otherInfo%d", i);
1092         val = ZOOM_options_get(c->options, buf);
1093         if (!val)
1094             break;
1095         cp = strchr(val, ':');
1096         if (!cp)
1097             continue;
1098         len = cp - val;
1099         if (len >= sizeof(buf))
1100             len = sizeof(buf)-1;
1101         memcpy(buf, val, len);
1102         buf[len] = '\0';
1103         oidval = oid_getvalbyname(buf);
1104         if (oidval == VAL_NONE)
1105             continue;
1106
1107         yaz_oi_APDU(a, &oi);
1108         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1109     }
1110 }
1111
1112 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1113 {
1114     assert(a);
1115     if (c->cookie_out)
1116     {
1117         Z_OtherInformation **oi;
1118         yaz_oi_APDU(a, &oi);
1119         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1120     }
1121     if (c->client_IP)
1122     {
1123         Z_OtherInformation **oi;
1124         yaz_oi_APDU(a, &oi);
1125         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1126     }
1127     otherInfo_attach(c, a, out);
1128     if (!z_APDU(out, &a, 0, 0))
1129     {
1130         FILE *outf = fopen("/tmp/apdu.txt", "a");
1131         if (a && outf)
1132         {
1133             ODR odr_pr = odr_createmem(ODR_PRINT);
1134             fprintf(outf, "a=%p\n", a);
1135             odr_setprint(odr_pr, outf);
1136             z_APDU(odr_pr, &a, 0, 0);
1137             odr_destroy(odr_pr);
1138         }
1139         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1140         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1141         odr_reset(out);
1142         return -1;
1143     }
1144     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1145     return 0;
1146 }
1147
1148 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1149 {
1150     ZOOM_Event event;
1151     assert(a);
1152     if (encode_APDU(c, a, c->odr_out))
1153         return zoom_complete;
1154     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1155     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1156     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1157     ZOOM_connection_put_event(c, event);
1158     odr_reset(c->odr_out);
1159     return do_write(c);
1160 }
1161
1162 /* returns 1 if PDU was sent OK (still pending )
1163    0 if PDU was not sent OK (nothing to wait for)
1164 */
1165
1166 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1167 {
1168     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1169     Z_InitRequest *ireq = apdu->u.initRequest;
1170     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1171         odr_malloc(c->odr_out, sizeof(*auth));
1172     const char *auth_groupId = ZOOM_options_get(c->options, "group");
1173     const char *auth_userId = ZOOM_options_get(c->options, "user");
1174     const char *auth_password = ZOOM_options_get(c->options, "password");
1175     char *version;
1176
1177     /* support the pass for backwards compatibility */
1178     if (!auth_password)
1179         auth_password = ZOOM_options_get(c->options, "pass");
1180
1181     ODR_MASK_SET(ireq->options, Z_Options_search);
1182     ODR_MASK_SET(ireq->options, Z_Options_present);
1183     ODR_MASK_SET(ireq->options, Z_Options_scan);
1184     ODR_MASK_SET(ireq->options, Z_Options_sort);
1185     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1186     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1187
1188     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1189     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1190     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1191
1192     /* Index Data's Z39.50 Implementor Id is 81 */
1193     ireq->implementationId =
1194         odr_prepend(c->odr_out,
1195                     ZOOM_options_get(c->options, "implementationId"),
1196                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1197
1198     ireq->implementationName =
1199         odr_prepend(c->odr_out,
1200                     ZOOM_options_get(c->options, "implementationName"),
1201                     odr_prepend(c->odr_out, "ZOOM-C",
1202                                 ireq->implementationName));
1203
1204     version = odr_strdup(c->odr_out, "$Revision: 1.87 $");
1205     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1206         version[strlen(version)-2] = '\0';
1207     ireq->implementationVersion =
1208         odr_prepend(c->odr_out,
1209                     ZOOM_options_get(c->options, "implementationVersion"),
1210                     odr_prepend(c->odr_out, &version[11],
1211                                 ireq->implementationVersion));
1212
1213     *ireq->maximumRecordSize =
1214         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
1215     *ireq->preferredMessageSize =
1216         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
1217
1218     if (auth_groupId || auth_password)
1219     {
1220         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1221         int i = 0;
1222         pass->groupId = 0;
1223         if (auth_groupId && *auth_groupId)
1224         {
1225             pass->groupId = (char *)
1226                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1227             strcpy(pass->groupId, auth_groupId);
1228             i++;
1229         }
1230         pass->userId = 0;
1231         if (auth_userId && *auth_userId)
1232         {
1233             pass->userId = (char *)
1234                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1235             strcpy(pass->userId, auth_userId);
1236             i++;
1237         }
1238         pass->password = 0;
1239         if (auth_password && *auth_password)
1240         {
1241             pass->password = (char *)
1242                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1243             strcpy(pass->password, auth_password);
1244             i++;
1245         }
1246         if (i)
1247         {
1248             auth->which = Z_IdAuthentication_idPass;
1249             auth->u.idPass = pass;
1250             ireq->idAuthentication = auth;
1251         }
1252     }
1253     else if (auth_userId)
1254     {
1255         auth->which = Z_IdAuthentication_open;
1256         auth->u.open = (char *)
1257             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1258         strcpy(auth->u.open, auth_userId);
1259         ireq->idAuthentication = auth;
1260     }
1261     if (c->proxy)
1262         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1263                                  VAL_PROXY, 1, c->host_port);
1264     if (c->charset || c->lang)
1265     {
1266         Z_OtherInformation **oi;
1267         Z_OtherInformationUnit *oi_unit;
1268
1269         yaz_oi_APDU(apdu, &oi);
1270
1271         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1272         {
1273             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1274             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1275             oi_unit->information.externallyDefinedInfo =
1276                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1277                                               c->charset, c->lang, 1);
1278         }
1279     }
1280     assert(apdu);
1281     return send_APDU(c, apdu);
1282 }
1283
1284 #if YAZ_HAVE_XML2
1285 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1286 {
1287     Z_GDU *gdu;
1288     ZOOM_Event event;
1289
1290     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1291
1292     if (c->sru_mode == zoom_sru_get)
1293     {
1294         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1295     }
1296     else if (c->sru_mode == zoom_sru_post)
1297     {
1298         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1299     }
1300     else if (c->sru_mode == zoom_sru_soap)
1301     {
1302         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1303     }
1304     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1305         return zoom_complete;
1306     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1307
1308     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1309     ZOOM_connection_put_event(c, event);
1310     odr_reset(c->odr_out);
1311     return do_write(c);
1312 }
1313 #endif
1314
1315 #if YAZ_HAVE_XML2
1316 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1317 {
1318     int i;
1319     int *start, *count;
1320     ZOOM_resultset resultset = 0;
1321     Z_SRW_PDU *sr = 0;
1322     const char *option_val = 0;
1323
1324     if (c->error)                  /* don't continue on error */
1325         return zoom_complete;
1326     assert(c->tasks);
1327     if (c->tasks->which == ZOOM_TASK_SEARCH)
1328     {
1329         resultset = c->tasks->u.search.resultset;
1330         resultset->setname = xstrdup("default");
1331         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1332         start = &c->tasks->u.search.start;
1333         count = &c->tasks->u.search.count;
1334     }
1335     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
1336     {
1337         resultset = c->tasks->u.retrieve.resultset;
1338
1339         start = &c->tasks->u.retrieve.start;
1340         count = &c->tasks->u.retrieve.count;
1341
1342         if (*start >= resultset->size)
1343             return zoom_complete;
1344         if (*start + *count > resultset->size)
1345             *count = resultset->size - *start;
1346
1347         for (i = 0; i < *count; i++)
1348         {
1349             ZOOM_record rec =
1350                 record_cache_lookup(resultset, i + *start);
1351             if (!rec)
1352                 break;
1353             else
1354             {
1355                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1356                 ZOOM_connection_put_event(c, event);
1357             }
1358         }
1359         *start += i;
1360         *count -= i;
1361
1362         if (*count == 0)
1363             return zoom_complete;
1364     }
1365     assert(resultset->query);
1366
1367     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1368
1369     if (resultset->query->z_query->which == Z_Query_type_104
1370         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1371     {
1372         sr->u.request->query_type = Z_SRW_query_type_cql;
1373         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1374     }
1375     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1376              resultset->query->z_query->u.type_1)
1377     {
1378         sr->u.request->query_type = Z_SRW_query_type_pqf;
1379         sr->u.request->query.pqf = resultset->query->query_string;
1380     }
1381     else
1382     {
1383         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1384         return zoom_complete;
1385     }
1386     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1387     sr->u.request->maximumRecords = odr_intdup(
1388         c->odr_out, resultset->step>0 ? resultset->step : *count);
1389     sr->u.request->recordSchema = resultset->schema;
1390
1391     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1392     if (option_val)
1393         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1394
1395     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1396     if (option_val)
1397         sr->extra_args = odr_strdup(c->odr_out, option_val);
1398     return send_srw(c, sr);
1399 }
1400 #else
1401 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1402 {
1403     return zoom_complete;
1404 }
1405 #endif
1406
1407 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1408 {
1409     ZOOM_resultset r;
1410     int lslb, ssub, mspn;
1411     const char *syntax;
1412     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1413     Z_SearchRequest *search_req = apdu->u.searchRequest;
1414     const char *elementSetName;
1415     const char *smallSetElementSetName;
1416     const char *mediumSetElementSetName;
1417
1418     assert(c->tasks);
1419     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1420
1421     r = c->tasks->u.search.resultset;
1422
1423     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1424
1425     elementSetName =
1426         ZOOM_options_get(r->options, "elementSetName");
1427     smallSetElementSetName  =
1428         ZOOM_options_get(r->options, "smallSetElementSetName");
1429     mediumSetElementSetName =
1430         ZOOM_options_get(r->options, "mediumSetElementSetName");
1431
1432     if (!smallSetElementSetName)
1433         smallSetElementSetName = elementSetName;
1434
1435     if (!mediumSetElementSetName)
1436         mediumSetElementSetName = elementSetName;
1437
1438     assert(r);
1439     assert(r->query);
1440
1441     /* prepare query for the search request */
1442     search_req->query = r->query->z_query;
1443     if (!search_req->query)
1444     {
1445         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1446         return zoom_complete;
1447     }
1448
1449     search_req->databaseNames =
1450         set_DatabaseNames(c, r->options, &search_req->num_databaseNames);
1451
1452     /* get syntax (no need to provide unless piggyback is in effect) */
1453     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1454
1455     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1456     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1457     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1458     if (lslb != -1 && ssub != -1 && mspn != -1)
1459     {
1460         /* So're a Z39.50 expert? Let's hope you don't do sort */
1461         *search_req->largeSetLowerBound = lslb;
1462         *search_req->smallSetUpperBound = ssub;
1463         *search_req->mediumSetPresentNumber = mspn;
1464     }
1465     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1466              && r->piggyback && !r->r_sort_spec && !r->schema)
1467     {
1468         /* Regular piggyback - do it unless we're going to do sort */
1469         *search_req->largeSetLowerBound = 2000000000;
1470         *search_req->smallSetUpperBound = 1;
1471         *search_req->mediumSetPresentNumber =
1472             r->step>0 ? r->step : c->tasks->u.search.count;
1473     }
1474     else
1475     {
1476         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1477         smallSetElementSetName = 0;
1478         mediumSetElementSetName = 0;
1479         syntax = 0;
1480     }
1481     if (smallSetElementSetName && *smallSetElementSetName)
1482     {
1483         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1484             odr_malloc(c->odr_out, sizeof(*esn));
1485
1486         esn->which = Z_ElementSetNames_generic;
1487         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1488         search_req->smallSetElementSetNames = esn;
1489     }
1490     if (mediumSetElementSetName && *mediumSetElementSetName)
1491     {
1492         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1493             odr_malloc(c->odr_out, sizeof(*esn));
1494
1495         esn->which = Z_ElementSetNames_generic;
1496         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1497         search_req->mediumSetElementSetNames = esn;
1498     }
1499     if (syntax)
1500         search_req->preferredRecordSyntax =
1501             yaz_str_to_z3950oid(c->odr_out, CLASS_RECSYN, syntax);
1502
1503     if (!r->setname)
1504     {
1505         if (c->support_named_resultsets)
1506         {
1507             char setname[14];
1508             int ord;
1509             /* find the lowest unused ordinal so that we re-use
1510                result sets on the server. */
1511             for (ord = 1; ; ord++)
1512             {
1513                 ZOOM_resultset rp;
1514                 sprintf(setname, "%d", ord);
1515                 for (rp = c->resultsets; rp; rp = rp->next)
1516                     if (rp->setname && !strcmp(rp->setname, setname))
1517                         break;
1518                 if (!rp)
1519                     break;
1520             }
1521             r->setname = xstrdup(setname);
1522             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1523                     "set %s", c, r->setname);
1524         }
1525         else
1526         {
1527             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1528                     "default set", c);
1529             r->setname = xstrdup("default");
1530         }
1531         ZOOM_options_set(r->options, "setname", r->setname);
1532     }
1533     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1534     return send_APDU(c, apdu);
1535 }
1536
1537 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1538 {
1539     int oclass;
1540     char *addinfo = 0;
1541
1542     switch (r->which)
1543     {
1544     case Z_DefaultDiagFormat_v2Addinfo:
1545         addinfo = r->u.v2Addinfo;
1546         break;
1547     case Z_DefaultDiagFormat_v3Addinfo:
1548         addinfo = r->u.v3Addinfo;
1549         break;
1550     }
1551     xfree(c->addinfo);
1552     c->addinfo = 0;
1553     set_dset_error(c, *r->condition,
1554                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1555                    addinfo, 0);
1556 }
1557
1558 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1559 {
1560     if (p->which != Z_DiagRec_defaultFormat)
1561         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1562     else
1563         response_default_diag(c, p->u.defaultFormat);
1564 }
1565
1566 ZOOM_API(ZOOM_record)
1567     ZOOM_record_clone(ZOOM_record srec)
1568 {
1569     char *buf;
1570     int size;
1571     ODR odr_enc;
1572     ZOOM_record nrec;
1573
1574     odr_enc = odr_createmem(ODR_ENCODE);
1575     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1576         return 0;
1577     buf = odr_getbuf(odr_enc, &size, 0);
1578
1579     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1580     nrec->odr = odr_createmem(ODR_DECODE);
1581     nrec->wrbuf_marc = 0;
1582     nrec->wrbuf_iconv = 0;
1583     nrec->wrbuf_opac = 0;
1584     odr_setbuf(nrec->odr, buf, size, 0);
1585     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1586
1587     odr_destroy(odr_enc);
1588     return nrec;
1589 }
1590
1591 ZOOM_API(ZOOM_record)
1592     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1593 {
1594     return record_cache_lookup(s, pos);
1595 }
1596
1597 ZOOM_API(ZOOM_record)
1598     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1599 {
1600     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1601
1602     if (!rec)
1603     {
1604         /*
1605          * MIKE: I think force_sync should always be zero, but I don't
1606          * want to make this change until I get the go-ahead from
1607          * Adam, in case something depends on the old synchronous
1608          * behaviour.
1609          */
1610         int force_sync = 1;
1611         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1612         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1613         rec = ZOOM_resultset_record_immediate(r, pos);
1614     }
1615     return rec;
1616 }
1617
1618 ZOOM_API(void)
1619     ZOOM_record_destroy(ZOOM_record rec)
1620 {
1621     if (!rec)
1622         return;
1623     if (rec->wrbuf_marc)
1624         wrbuf_free(rec->wrbuf_marc, 1);
1625     if (rec->wrbuf_iconv)
1626         wrbuf_free(rec->wrbuf_iconv, 1);
1627     if (rec->wrbuf_opac)
1628         wrbuf_free(rec->wrbuf_opac, 1);
1629     odr_destroy(rec->odr);
1630     xfree(rec);
1631 }
1632
1633 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1634                                      int *len,
1635                                      const char *buf, int sz,
1636                                      const char *record_charset)
1637 {
1638     char to[40];
1639     char from[40];
1640     yaz_iconv_t cd = 0;
1641     yaz_marc_t mt = yaz_marc_create();
1642
1643     *from = '\0';
1644     strcpy(to, "UTF-8");
1645     if (record_charset && *record_charset)
1646     {
1647         /* Use "from,to" or just "from" */
1648         const char *cp = strchr(record_charset, ',');
1649         int clen = strlen(record_charset);
1650         if (cp && cp[1])
1651         {
1652             strncpy( to, cp+1, sizeof(to)-1);
1653             to[sizeof(to)-1] = '\0';
1654             clen = cp - record_charset;
1655         }
1656         if (clen > sizeof(from)-1)
1657             clen = sizeof(from)-1;
1658
1659         if (clen)
1660             strncpy(from, record_charset, clen);
1661         from[clen] = '\0';
1662     }
1663
1664     if (*from && *to)
1665     {
1666         cd = yaz_iconv_open(to, from);
1667         yaz_marc_iconv(mt, cd);
1668     }
1669
1670     yaz_marc_xml(mt, marc_type);
1671     if (!rec->wrbuf_marc)
1672         rec->wrbuf_marc = wrbuf_alloc();
1673     wrbuf_rewind(rec->wrbuf_marc);
1674     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1675     {
1676         yaz_marc_destroy(mt);
1677         if (cd)
1678             yaz_iconv_close(cd);
1679         if (len)
1680             *len = wrbuf_len(rec->wrbuf_marc);
1681         return wrbuf_buf(rec->wrbuf_marc);
1682     }
1683     yaz_marc_destroy(mt);
1684     if (cd)
1685         yaz_iconv_close(cd);
1686     return 0;
1687 }
1688
1689 static const char *record_iconv_return(ZOOM_record rec, int *len,
1690                                        const char *buf, int sz,
1691                                        const char *record_charset)
1692 {
1693     char to[40];
1694     char from[40];
1695     yaz_iconv_t cd = 0;
1696
1697     *from = '\0';
1698     strcpy(to, "UTF-8");
1699     if (record_charset && *record_charset)
1700     {
1701         /* Use "from,to" or just "from" */
1702         const char *cp = strchr(record_charset, ',');
1703         int clen = strlen(record_charset);
1704         if (cp && cp[1])
1705         {
1706             strncpy( to, cp+1, sizeof(to)-1);
1707             to[sizeof(to)-1] = '\0';
1708             clen = cp - record_charset;
1709         }
1710         if (clen > sizeof(from)-1)
1711             clen = sizeof(from)-1;
1712
1713         if (clen)
1714             strncpy(from, record_charset, clen);
1715         from[clen] = '\0';
1716     }
1717
1718     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1719     {
1720         char outbuf[12];
1721         size_t inbytesleft = sz;
1722         const char *inp = buf;
1723
1724         if (!rec->wrbuf_iconv)
1725             rec->wrbuf_iconv = wrbuf_alloc();
1726
1727         wrbuf_rewind(rec->wrbuf_iconv);
1728
1729         while (inbytesleft)
1730         {
1731             size_t outbytesleft = sizeof(outbuf);
1732             char *outp = outbuf;
1733             size_t r = yaz_iconv(cd, (char**) &inp,
1734                                  &inbytesleft,
1735                                  &outp, &outbytesleft);
1736             if (r == (size_t) (-1))
1737             {
1738                 int e = yaz_iconv_error(cd);
1739                 if (e != YAZ_ICONV_E2BIG)
1740                     break;
1741             }
1742             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1743         }
1744         wrbuf_puts(rec->wrbuf_iconv, "");
1745         buf = wrbuf_buf(rec->wrbuf_iconv);
1746         sz = wrbuf_len(rec->wrbuf_iconv);
1747         yaz_iconv_close(cd);
1748     }
1749     if (len)
1750         *len = sz;
1751     return buf;
1752 }
1753
1754 ZOOM_API(const char *)
1755     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1756 {
1757     char type[40];
1758     char charset[40];
1759     char xpath[512];
1760     const char *cp;
1761     int i;
1762     Z_NamePlusRecord *npr;
1763
1764     if (len)
1765         *len = 0; /* default return */
1766
1767     if (!rec)
1768         return 0;
1769     npr = rec->npr;
1770     if (!npr)
1771         return 0;
1772
1773     cp = type_spec;
1774     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1775     {
1776         if (cp[i] == ';' || cp[i] == ' ')
1777             break;
1778         type[i] = cp[i];
1779     }
1780     type[i] = '\0';
1781     charset[0] = '\0';
1782     while (type_spec[i] == ';')
1783     {
1784         i++;
1785         while (type_spec[i] == ' ')
1786             i++;
1787         if (!strncmp(type_spec+i, "charset=", 8))
1788         {
1789             int j = 0;
1790             i = i + 8; /* skip charset= */
1791             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1792             {
1793                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1794                     break;
1795                 charset[j] = cp[i];
1796             }
1797             charset[j] = '\0';
1798         }
1799         else if (!strncmp(type_spec+i, "xpath=", 6))
1800         {
1801             int j = 0;
1802             i = i + 6;
1803             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1804                 xpath[j] = cp[i];
1805             xpath[j] = '\0';
1806         }
1807         while (type_spec[i] == ' ')
1808             i++;
1809     }
1810     if (!strcmp(type, "database"))
1811     {
1812         if (len)
1813             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1814         return npr->databaseName;
1815     }
1816     else if (!strcmp(type, "syntax"))
1817     {
1818         const char *desc = 0;
1819         if (npr->which == Z_NamePlusRecord_databaseRecord)
1820         {
1821             Z_External *r = (Z_External *) npr->u.databaseRecord;
1822             oident *ent = oid_getentbyoid(r->direct_reference);
1823             if (ent)
1824                 desc = ent->desc;
1825         }
1826         if (!desc)
1827             desc = "none";
1828         if (len)
1829             *len = strlen(desc);
1830         return desc;
1831     }
1832     if (npr->which != Z_NamePlusRecord_databaseRecord)
1833         return 0;
1834
1835     /* from now on - we have a database record .. */
1836     if (!strcmp(type, "render"))
1837     {
1838         Z_External *r = (Z_External *) npr->u.databaseRecord;
1839         oident *ent = oid_getentbyoid(r->direct_reference);
1840
1841         /* render bibliographic record .. */
1842         if (r->which == Z_External_OPAC)
1843         {
1844             r = r->u.opac->bibliographicRecord;
1845             if (!r)
1846                 return 0;
1847             ent = oid_getentbyoid(r->direct_reference);
1848         }
1849         if (r->which == Z_External_sutrs)
1850             return record_iconv_return(rec, len,
1851                                        (char*) r->u.sutrs->buf,
1852                                        r->u.sutrs->len,
1853                                        charset);
1854         else if (r->which == Z_External_octet)
1855         {
1856             const char *ret_buf;
1857             switch (ent->value)
1858             {
1859             case VAL_SOIF:
1860             case VAL_HTML:
1861             case VAL_SUTRS:
1862                 break;
1863             case VAL_TEXT_XML:
1864             case VAL_APPLICATION_XML:
1865                 break;
1866             default:
1867                 ret_buf = marc_iconv_return(
1868                     rec, YAZ_MARC_LINE, len,
1869                     (const char *) r->u.octet_aligned->buf,
1870                     r->u.octet_aligned->len,
1871                     charset);
1872                 if (ret_buf)
1873                     return ret_buf;
1874             }
1875             return record_iconv_return(rec, len,
1876                                        (const char *) r->u.octet_aligned->buf,
1877                                        r->u.octet_aligned->len,
1878                                        charset);
1879         }
1880         else if (r->which == Z_External_grs1)
1881         {
1882             if (!rec->wrbuf_marc)
1883                 rec->wrbuf_marc = wrbuf_alloc();
1884             wrbuf_rewind(rec->wrbuf_marc);
1885             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1886             return record_iconv_return(rec, len,
1887                                        wrbuf_buf(rec->wrbuf_marc),
1888                                        wrbuf_len(rec->wrbuf_marc),
1889                                        charset);
1890         }
1891         return 0;
1892     }
1893     else if (!strcmp(type, "xml"))
1894     {
1895         Z_External *r = (Z_External *) npr->u.databaseRecord;
1896         oident *ent = oid_getentbyoid(r->direct_reference);
1897
1898         /* render bibliographic record .. */
1899         if (r->which == Z_External_OPAC)
1900         {
1901             r = r->u.opac->bibliographicRecord;
1902             if (!r)
1903                 return 0;
1904             ent = oid_getentbyoid(r->direct_reference);
1905         }
1906
1907         if (r->which == Z_External_sutrs)
1908             return record_iconv_return(rec, len,
1909                                        (const char *) r->u.sutrs->buf,
1910                                        r->u.sutrs->len,
1911                                        charset);
1912         else if (r->which == Z_External_octet)
1913         {
1914             const char *ret_buf;
1915             int marc_decode_type = YAZ_MARC_MARCXML;
1916
1917             switch (ent->value)
1918             {
1919             case VAL_SOIF:
1920             case VAL_HTML:
1921             case VAL_SUTRS:
1922                 break;
1923             case VAL_TEXT_XML:
1924             case VAL_APPLICATION_XML:
1925                 break;
1926             default:
1927                 ret_buf = marc_iconv_return(
1928                     rec, marc_decode_type, len,
1929                     (const char *) r->u.octet_aligned->buf,
1930                     r->u.octet_aligned->len,
1931                     charset);
1932                 if (ret_buf)
1933                     return ret_buf;
1934             }
1935             return record_iconv_return(rec, len,
1936                                        (const char *) r->u.octet_aligned->buf,
1937                                        r->u.octet_aligned->len,
1938                                        charset);
1939         }
1940         else if (r->which == Z_External_grs1)
1941         {
1942             if (len) *len = 5;
1943             return "GRS-1";
1944         }
1945         return 0;
1946     }
1947     else if (!strcmp(type, "raw"))
1948     {
1949         Z_External *r = (Z_External *) npr->u.databaseRecord;
1950
1951         if (r->which == Z_External_sutrs)
1952         {
1953             if (len) *len = r->u.sutrs->len;
1954             return (const char *) r->u.sutrs->buf;
1955         }
1956         else if (r->which == Z_External_octet)
1957         {
1958             if (len) *len = r->u.octet_aligned->len;
1959             return (const char *) r->u.octet_aligned->buf;
1960         }
1961         else /* grs-1, explain, OPAC, ... */
1962         {
1963             if (len) *len = -1;
1964             return (const char *) npr->u.databaseRecord;
1965         }
1966         return 0;
1967     }
1968     else if (!strcmp (type, "ext"))
1969     {
1970         if (len) *len = -1;
1971         return (const char *) npr->u.databaseRecord;
1972     }
1973     else if (!strcmp (type, "opac"))
1974
1975     {
1976         Z_External *r = (Z_External *) npr->u.databaseRecord;
1977         if (r->which == Z_External_OPAC)
1978         {
1979             if (!rec->wrbuf_opac)
1980                 rec->wrbuf_opac = wrbuf_alloc();
1981             wrbuf_rewind(rec->wrbuf_opac);
1982             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1983             return record_iconv_return(rec, len,
1984                                        wrbuf_buf(rec->wrbuf_opac),
1985                                        wrbuf_len(rec->wrbuf_opac),
1986                                        charset);
1987         }
1988     }
1989     return 0;
1990 }
1991
1992 static int strcmp_null(const char *v1, const char *v2)
1993 {
1994     if (!v1 && !v2)
1995         return 0;
1996     if (!v1 || !v2)
1997         return -1;
1998     return strcmp(v1, v2);
1999 }
2000
2001 static size_t record_hash(int pos)
2002 {
2003     if (pos < 0)
2004         pos = 0;
2005     return pos % RECORD_HASH_SIZE;
2006 }
2007
2008 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2009                              int pos)
2010 {
2011     ZOOM_record_cache rc;
2012     const char *elementSetName =
2013         ZOOM_resultset_option_get(r, "elementSetName");
2014     const char *syntax =
2015         ZOOM_resultset_option_get(r, "preferredRecordSyntax");
2016
2017     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2018     ZOOM_connection_put_event(r->connection, event);
2019
2020     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2021     {
2022         if (pos == rc->pos)
2023         {
2024             if (strcmp_null(r->schema, rc->schema))
2025                 continue;
2026             if (strcmp_null(elementSetName,rc->elementSetName))
2027                 continue;
2028             if (strcmp_null(syntax, rc->syntax))
2029                 continue;
2030             /* not destroying rc->npr (it's handled by nmem )*/
2031             rc->rec.npr = npr;
2032             /* keeping wrbuf_marc too */
2033             return;
2034         }
2035     }
2036     rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2037     rc->rec.npr = npr;
2038     rc->rec.odr = 0;
2039     rc->rec.wrbuf_marc = 0;
2040     rc->rec.wrbuf_iconv = 0;
2041     rc->rec.wrbuf_opac = 0;
2042     if (elementSetName)
2043         rc->elementSetName = odr_strdup(r->odr, elementSetName);
2044     else
2045         rc->elementSetName = 0;
2046
2047     if (syntax)
2048         rc->syntax = odr_strdup(r->odr, syntax);
2049     else
2050         rc->syntax = 0;
2051
2052     if (r->schema)
2053         rc->schema = odr_strdup(r->odr, r->schema);
2054     else
2055         rc->schema = 0;
2056
2057     rc->pos = pos;
2058     rc->next = r->record_hash[record_hash(pos)];
2059     r->record_hash[record_hash(pos)] = rc;
2060 }
2061
2062 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos)
2063 {
2064     ZOOM_record_cache rc;
2065     const char *elementSetName =
2066         ZOOM_resultset_option_get(r, "elementSetName");
2067     const char *syntax =
2068         ZOOM_resultset_option_get(r, "preferredRecordSyntax");
2069
2070     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2071     {
2072         if (pos == rc->pos)
2073         {
2074             if (strcmp_null(r->schema, rc->schema))
2075                 continue;
2076             if (strcmp_null(elementSetName,rc->elementSetName))
2077                 continue;
2078             if (strcmp_null(syntax, rc->syntax))
2079                 continue;
2080             return &rc->rec;
2081         }
2082     }
2083     return 0;
2084 }
2085
2086 static void handle_records(ZOOM_connection c, Z_Records *sr,
2087                            int present_phase)
2088 {
2089     ZOOM_resultset resultset;
2090     int *start, *count;
2091
2092     if (!c->tasks)
2093         return ;
2094     switch (c->tasks->which)
2095     {
2096     case ZOOM_TASK_SEARCH:
2097         resultset = c->tasks->u.search.resultset;
2098         start = &c->tasks->u.search.start;
2099         count = &c->tasks->u.search.count;
2100         break;
2101     case ZOOM_TASK_RETRIEVE:
2102         resultset = c->tasks->u.retrieve.resultset;
2103         start = &c->tasks->u.retrieve.start;
2104         count = &c->tasks->u.retrieve.count;
2105         break;
2106     default:
2107         return;
2108     }
2109     if (sr && sr->which == Z_Records_NSD)
2110         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2111     else if (sr && sr->which == Z_Records_multipleNSD)
2112     {
2113         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2114             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2115         else
2116             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2117     }
2118     else
2119     {
2120         if (*count + *start > resultset->size)
2121             *count = resultset->size - *start;
2122         if (*count < 0)
2123             *count = 0;
2124         if (sr && sr->which == Z_Records_DBOSD)
2125         {
2126             int i;
2127             NMEM nmem = odr_extract_mem(c->odr_in);
2128             Z_NamePlusRecordList *p =
2129                 sr->u.databaseOrSurDiagnostics;
2130             for (i = 0; i<p->num_records; i++)
2131             {
2132                 record_cache_add(resultset, p->records[i], i + *start);
2133             }
2134             *count -= i;
2135             *start += i;
2136             yaz_log(log_details,
2137                     "handle_records resultset=%p start=%d count=%d",
2138                     resultset, *start, *count);
2139
2140             /* transfer our response to search_nmem .. we need it later */
2141             nmem_transfer(resultset->odr->mem, nmem);
2142             nmem_destroy(nmem);
2143             if (present_phase && p->num_records == 0)
2144             {
2145                 /* present response and we didn't get any records! */
2146                 Z_NamePlusRecord *myrec =
2147                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2148                 record_cache_add(resultset, myrec, *start);
2149             }
2150         }
2151         else if (present_phase)
2152         {
2153             /* present response and we didn't get any records! */
2154             Z_NamePlusRecord *myrec =
2155                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2156             record_cache_add(resultset, myrec, *start);
2157         }
2158     }
2159 }
2160
2161 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2162 {
2163     handle_records(c, pr->records, 1);
2164 }
2165
2166 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2167                                        Z_Term *term)
2168 {
2169     switch (term->which)
2170     {
2171     case Z_Term_general:
2172         ZOOM_options_setl(opt, name,
2173                           (const char *)(term->u.general->buf),
2174                           term->u.general->len);
2175         break;
2176     case Z_Term_characterString:
2177         ZOOM_options_set(opt, name, term->u.characterString);
2178         break;
2179     case Z_Term_numeric:
2180         ZOOM_options_set_int(opt, name, *term->u.numeric);
2181         break;
2182     }
2183 }
2184
2185 static void handle_queryExpression(ZOOM_options opt, const char *name,
2186                                    Z_QueryExpression *exp)
2187 {
2188     char opt_name[80];
2189
2190     switch (exp->which)
2191     {
2192     case Z_QueryExpression_term:
2193         if (exp->u.term && exp->u.term->queryTerm)
2194         {
2195             sprintf(opt_name, "%s.term", name);
2196             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2197         }
2198         break;
2199     case Z_QueryExpression_query:
2200         break;
2201     }
2202 }
2203
2204 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2205                                 Z_OtherInformation *o)
2206 {
2207     int i;
2208     for (i = 0; o && i < o->num_elements; i++)
2209     {
2210         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2211         {
2212             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2213
2214             if (ext->which == Z_External_searchResult1)
2215             {
2216                 int j;
2217                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2218
2219                 if (sr->num)
2220                     ZOOM_options_set_int(
2221                         resultset->options, "searchresult.size", sr->num);
2222
2223                 for (j = 0; j < sr->num; j++)
2224                 {
2225                     Z_SearchInfoReport_s *ent =
2226                         ext->u.searchResult1->elements[j];
2227                     char pref[80];
2228
2229                     sprintf(pref, "searchresult.%d", j);
2230
2231                     if (ent->subqueryId)
2232                     {
2233                         char opt_name[80];
2234                         sprintf(opt_name, "%s.id", pref);
2235                         ZOOM_options_set(resultset->options, opt_name,
2236                                          ent->subqueryId);
2237                     }
2238                     if (ent->subqueryExpression)
2239                     {
2240                         char opt_name[80];
2241                         sprintf(opt_name, "%s.subquery", pref);
2242                         handle_queryExpression(resultset->options, opt_name,
2243                                                ent->subqueryExpression);
2244                     }
2245                     if (ent->subqueryInterpretation)
2246                     {
2247                         char opt_name[80];
2248                         sprintf(opt_name, "%s.interpretation", pref);
2249                         handle_queryExpression(resultset->options, opt_name,
2250                                                ent->subqueryInterpretation);
2251                     }
2252                     if (ent->subqueryRecommendation)
2253                     {
2254                         char opt_name[80];
2255                         sprintf(opt_name, "%s.recommendation", pref);
2256                         handle_queryExpression(resultset->options, opt_name,
2257                                                ent->subqueryRecommendation);
2258                     }
2259                     if (ent->subqueryCount)
2260                     {
2261                         char opt_name[80];
2262                         sprintf(opt_name, "%s.count", pref);
2263                         ZOOM_options_set_int(resultset->options, opt_name,
2264                                              *ent->subqueryCount);
2265                     }
2266                 }
2267             }
2268         }
2269     }
2270 }
2271
2272 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2273 {
2274     ZOOM_resultset resultset;
2275     ZOOM_Event event;
2276
2277     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2278         return ;
2279
2280     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2281     ZOOM_connection_put_event(c, event);
2282
2283     resultset = c->tasks->u.search.resultset;
2284
2285     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2286
2287     resultset->size = *sr->resultCount;
2288     handle_records(c, sr->records, 0);
2289 }
2290
2291 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2292 {
2293     if (res->diagnostics && res->num_diagnostics > 0)
2294         response_diag(c, res->diagnostics[0]);
2295 }
2296
2297 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2298 {
2299     NMEM nmem = odr_extract_mem(c->odr_in);
2300     ZOOM_scanset scan;
2301
2302     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2303         return 0;
2304     scan = c->tasks->u.scan.scan;
2305
2306     if (res->entries && res->entries->nonsurrogateDiagnostics)
2307         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2308     scan->scan_response = res;
2309     nmem_transfer(scan->odr->mem, nmem);
2310     if (res->stepSize)
2311         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2312     if (res->positionOfTerm)
2313         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2314     if (res->scanStatus)
2315         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2316     if (res->numberOfEntriesReturned)
2317         ZOOM_options_set_int(scan->options, "number",
2318                              *res->numberOfEntriesReturned);
2319     nmem_destroy(nmem);
2320     return 1;
2321 }
2322
2323 static zoom_ret send_sort(ZOOM_connection c,
2324                           ZOOM_resultset resultset)
2325 {
2326     if (c->error)
2327         resultset->r_sort_spec = 0;
2328     if (resultset->r_sort_spec)
2329     {
2330         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2331         Z_SortRequest *req = apdu->u.sortRequest;
2332
2333         req->num_inputResultSetNames = 1;
2334         req->inputResultSetNames = (Z_InternationalString **)
2335             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2336         req->inputResultSetNames[0] =
2337             odr_strdup(c->odr_out, resultset->setname);
2338         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2339         req->sortSequence = resultset->r_sort_spec;
2340         resultset->r_sort_spec = 0;
2341         return send_APDU(c, apdu);
2342     }
2343     return zoom_complete;
2344 }
2345
2346 static zoom_ret send_present(ZOOM_connection c)
2347 {
2348     Z_APDU *apdu = 0;
2349     Z_PresentRequest *req = 0;
2350     int i = 0;
2351     const char *syntax = 0;
2352     const char *elementSetName = 0;
2353     ZOOM_resultset  resultset;
2354     int *start, *count;
2355
2356     if (!c->tasks)
2357     {
2358         yaz_log(log_details, "%p send_present no tasks", c);
2359         return zoom_complete;
2360     }
2361
2362     switch (c->tasks->which)
2363     {
2364     case ZOOM_TASK_SEARCH:
2365         resultset = c->tasks->u.search.resultset;
2366         start = &c->tasks->u.search.start;
2367         count = &c->tasks->u.search.count;
2368         break;
2369     case ZOOM_TASK_RETRIEVE:
2370         resultset = c->tasks->u.retrieve.resultset;
2371         start = &c->tasks->u.retrieve.start;
2372         count = &c->tasks->u.retrieve.count;
2373
2374         if (*start >= resultset->size)
2375         {
2376             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2377                     c, *start, resultset->size);
2378             return zoom_complete;
2379         }
2380         if (*start + *count > resultset->size)
2381             *count = resultset->size - *start;
2382         break;
2383     default:
2384         return zoom_complete;
2385     }
2386     yaz_log(log_details, "%p send_present start=%d count=%d",
2387             c, *start, *count);
2388
2389     syntax = ZOOM_resultset_option_get(resultset, "preferredRecordSyntax");
2390     elementSetName = ZOOM_resultset_option_get(resultset, "elementSetName");
2391
2392     if (c->error)                  /* don't continue on error */
2393         return zoom_complete;
2394     if (*start < 0)
2395         return zoom_complete;
2396     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2397             resultset, *start, *count);
2398
2399     for (i = 0; i < *count; i++)
2400     {
2401         ZOOM_record rec =
2402             record_cache_lookup(resultset, i + *start);
2403         if (!rec)
2404             break;
2405         else
2406         {
2407             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2408             ZOOM_connection_put_event(c, event);
2409         }
2410     }
2411     *start += i;
2412     *count -= i;
2413
2414     if (*count == 0)
2415     {
2416         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2417         return zoom_complete;
2418     }
2419
2420     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2421     req = apdu->u.presentRequest;
2422
2423     if (i)
2424         yaz_log(log_details, "%p send_present skip=%d", c, i);
2425
2426     *req->resultSetStartPoint = *start + 1;
2427     *req->numberOfRecordsRequested = resultset->step>0 ?
2428         resultset->step : *count;
2429     if (*req->numberOfRecordsRequested + *start > resultset->size)
2430         *req->numberOfRecordsRequested = resultset->size - *start;
2431     assert(*req->numberOfRecordsRequested > 0);
2432
2433     if (syntax && *syntax)
2434         req->preferredRecordSyntax =
2435             yaz_str_to_z3950oid(c->odr_out, CLASS_RECSYN, syntax);
2436
2437     if (resultset->schema && *resultset->schema)
2438     {
2439         Z_RecordComposition *compo = (Z_RecordComposition *)
2440             odr_malloc(c->odr_out, sizeof(*compo));
2441
2442         req->recordComposition = compo;
2443         compo->which = Z_RecordComp_complex;
2444         compo->u.complex = (Z_CompSpec *)
2445             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2446         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2447             odr_malloc(c->odr_out, sizeof(bool_t));
2448         *compo->u.complex->selectAlternativeSyntax = 0;
2449
2450         compo->u.complex->generic = (Z_Specification *)
2451             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2452
2453         compo->u.complex->generic->which = Z_Schema_oid;
2454         compo->u.complex->generic->schema.oid = (Odr_oid *)
2455             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2456
2457         if (!compo->u.complex->generic->schema.oid)
2458         {
2459             /* OID wasn't a schema! Try record syntax instead. */
2460
2461             compo->u.complex->generic->schema.oid = (Odr_oid *)
2462                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2463         }
2464         if (elementSetName && *elementSetName)
2465         {
2466             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2467                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2468             compo->u.complex->generic->elementSpec->which =
2469                 Z_ElementSpec_elementSetName;
2470             compo->u.complex->generic->elementSpec->u.elementSetName =
2471                 odr_strdup(c->odr_out, elementSetName);
2472         }
2473         else
2474             compo->u.complex->generic->elementSpec = 0;
2475         compo->u.complex->num_dbSpecific = 0;
2476         compo->u.complex->dbSpecific = 0;
2477         compo->u.complex->num_recordSyntax = 0;
2478         compo->u.complex->recordSyntax = 0;
2479     }
2480     else if (elementSetName && *elementSetName)
2481     {
2482         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2483             odr_malloc(c->odr_out, sizeof(*esn));
2484         Z_RecordComposition *compo = (Z_RecordComposition *)
2485             odr_malloc(c->odr_out, sizeof(*compo));
2486
2487         esn->which = Z_ElementSetNames_generic;
2488         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2489         compo->which = Z_RecordComp_simple;
2490         compo->u.simple = esn;
2491         req->recordComposition = compo;
2492     }
2493     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2494     return send_APDU(c, apdu);
2495 }
2496
2497 ZOOM_API(ZOOM_scanset)
2498     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2499 {
2500     ZOOM_scanset s;
2501     ZOOM_query q = ZOOM_query_create();
2502
2503     ZOOM_query_prefix(q, start);
2504
2505     s = ZOOM_connection_scan1(c, q);
2506     ZOOM_query_destroy(q);
2507     return s;
2508
2509 }
2510
2511 ZOOM_API(ZOOM_scanset)
2512     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2513 {
2514     char *start;
2515     char *freeme = 0;
2516     ZOOM_scanset scan = 0;
2517
2518     /*
2519      * We need to check the query-type, so we can recognise CQL and
2520      * CCL and compile them into a form that we can use here.  The
2521      * ZOOM_query structure has no explicit `type' member, but
2522      * inspection of the ZOOM_query_prefix() and ZOOM_query_cql()
2523      * functions shows how the structure is set up in each case.
2524      */
2525     if (!q->z_query)
2526         return 0;
2527     else if (q->z_query->which == Z_Query_type_1)
2528     {
2529         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2530                 c, q, q->query_string);
2531         start = q->query_string;
2532     }
2533     else if (q->z_query->which == Z_Query_type_104)
2534     {
2535         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2536                 c, q, q->query_string);
2537         start = freeme = cql2pqf(c, q->query_string);
2538         if (start == 0)
2539             return 0;
2540     }
2541     else
2542     {
2543         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2544                 c, q, q->query_string);
2545         abort();
2546     }
2547
2548     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2549     scan->connection = c;
2550     scan->odr = odr_createmem(ODR_DECODE);
2551     scan->options = ZOOM_options_create_with_parent(c->options);
2552     scan->refcount = 1;
2553     scan->scan_response = 0;
2554     scan->termListAndStartPoint =
2555         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2556     xfree(freeme);
2557     if (scan->termListAndStartPoint != 0)
2558     {
2559         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2560         task->u.scan.scan = scan;
2561
2562         (scan->refcount)++;
2563         if (!c->async)
2564         {
2565             while (ZOOM_event(1, &c))
2566                 ;
2567         }
2568     }
2569     return scan;
2570 }
2571
2572 ZOOM_API(void)
2573     ZOOM_scanset_destroy(ZOOM_scanset scan)
2574 {
2575     if (!scan)
2576         return;
2577     (scan->refcount)--;
2578     if (scan->refcount == 0)
2579     {
2580         odr_destroy(scan->odr);
2581
2582         ZOOM_options_destroy(scan->options);
2583         xfree(scan);
2584     }
2585 }
2586
2587 static zoom_ret send_package(ZOOM_connection c)
2588 {
2589     ZOOM_Event event;
2590
2591     yaz_log(log_details, "%p send_package", c);
2592     if (!c->tasks)
2593         return zoom_complete;
2594     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2595
2596     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2597     ZOOM_connection_put_event(c, event);
2598
2599     c->buf_out = c->tasks->u.package->buf_out;
2600     c->len_out = c->tasks->u.package->len_out;
2601
2602     return do_write(c);
2603 }
2604
2605 static zoom_ret send_scan(ZOOM_connection c)
2606 {
2607     ZOOM_scanset scan;
2608     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2609     Z_ScanRequest *req = apdu->u.scanRequest;
2610
2611     yaz_log(log_details, "%p send_scan", c);
2612     if (!c->tasks)
2613         return zoom_complete;
2614     assert (c->tasks->which == ZOOM_TASK_SCAN);
2615     scan = c->tasks->u.scan.scan;
2616
2617     req->termListAndStartPoint = scan->termListAndStartPoint;
2618     req->attributeSet = scan->attributeSet;
2619
2620     *req->numberOfTermsRequested =
2621         ZOOM_options_get_int(scan->options, "number", 10);
2622
2623     req->preferredPositionInResponse =
2624         odr_intdup(c->odr_out,
2625                    ZOOM_options_get_int(scan->options, "position", 1));
2626
2627     req->stepSize =
2628         odr_intdup(c->odr_out,
2629                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2630
2631     req->databaseNames = set_DatabaseNames(c, scan->options,
2632                                            &req->num_databaseNames);
2633
2634     return send_APDU(c, apdu);
2635 }
2636
2637 ZOOM_API(size_t)
2638     ZOOM_scanset_size(ZOOM_scanset scan)
2639 {
2640     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2641         return 0;
2642     return scan->scan_response->entries->num_entries;
2643 }
2644
2645 ZOOM_API(const char *)
2646     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2647                       int *occ, int *len)
2648 {
2649     const char *term = 0;
2650     size_t noent = ZOOM_scanset_size(scan);
2651     Z_ScanResponse *res = scan->scan_response;
2652
2653     *len = 0;
2654     *occ = 0;
2655     if (pos >= noent)
2656         return 0;
2657     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2658     {
2659         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2660
2661         if (t->term->which == Z_Term_general)
2662         {
2663             term = (const char *) t->term->u.general->buf;
2664             *len = t->term->u.general->len;
2665         }
2666         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2667     }
2668     return term;
2669 }
2670
2671 ZOOM_API(const char *)
2672     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
2673                               int *occ, int *len)
2674 {
2675     const char *term = 0;
2676     size_t noent = ZOOM_scanset_size(scan);
2677     Z_ScanResponse *res = scan->scan_response;
2678
2679     *len = 0;
2680     *occ = 0;
2681     if (pos >= noent)
2682         return 0;
2683     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2684     {
2685         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2686
2687         if (t->displayTerm)
2688         {
2689             term = t->displayTerm;
2690             *len = strlen(term);
2691         }
2692         else if (t->term->which == Z_Term_general)
2693         {
2694             term = (const char *) t->term->u.general->buf;
2695             *len = t->term->u.general->len;
2696         }
2697         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2698     }
2699     return term;
2700 }
2701
2702 ZOOM_API(const char *)
2703     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
2704 {
2705     return ZOOM_options_get(scan->options, key);
2706 }
2707
2708 ZOOM_API(void)
2709     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
2710                             const char *val)
2711 {
2712     ZOOM_options_set(scan->options, key, val);
2713 }
2714
2715 static Z_APDU *create_es_package(ZOOM_package p, int type)
2716 {
2717     const char *str;
2718     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2719     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2720
2721     *req->function = Z_ExtendedServicesRequest_create;
2722
2723     str = ZOOM_options_get(p->options, "package-name");
2724     if (str && *str)
2725         req->packageName = nmem_strdup(p->odr_out->mem, str);
2726
2727     str = ZOOM_options_get(p->options, "user-id");
2728     if (str)
2729         req->userId = nmem_strdup(p->odr_out->mem, str);
2730
2731     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2732                                               type);
2733
2734     str = ZOOM_options_get(p->options, "function");
2735     if (str)
2736     {
2737         if (!strcmp (str, "create"))
2738             *req->function = 1;
2739         if (!strcmp (str, "delete"))
2740             *req->function = 2;
2741         if (!strcmp (str, "modify"))
2742             *req->function = 3;
2743     }
2744     return apdu;
2745 }
2746
2747 static const char *ill_array_lookup(void *clientData, const char *idx)
2748 {
2749     ZOOM_package p = (ZOOM_package) clientData;
2750     return ZOOM_options_get(p->options, idx+4);
2751 }
2752
2753 static Z_External *encode_ill_request(ZOOM_package p)
2754 {
2755     ODR out = p->odr_out;
2756     ILL_Request *req;
2757     Z_External *r = 0;
2758     struct ill_get_ctl ctl;
2759
2760     ctl.odr = p->odr_out;
2761     ctl.clientData = p;
2762     ctl.f = ill_array_lookup;
2763
2764     req = ill_get_ILLRequest(&ctl, "ill", 0);
2765
2766     if (!ill_Request(out, &req, 0, 0))
2767     {
2768         int ill_request_size;
2769         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
2770         if (ill_request_buf)
2771             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
2772         return 0;
2773     }
2774     else
2775     {
2776         oident oid;
2777         int illRequest_size = 0;
2778         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
2779
2780         oid.proto = PROTO_GENERAL;
2781         oid.oclass = CLASS_GENERAL;
2782         oid.value = VAL_ISO_ILL_1;
2783
2784         r = (Z_External *) odr_malloc(out, sizeof(*r));
2785         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2786         r->indirect_reference = 0;
2787         r->descriptor = 0;
2788         r->which = Z_External_single;
2789
2790         r->u.single_ASN1_type =
2791             odr_create_Odr_oct(out,
2792                                (unsigned char *)illRequest_buf,
2793                                illRequest_size);
2794     }
2795     return r;
2796 }
2797
2798 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2799 {
2800     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
2801     const char *str;
2802
2803     req->which = Z_IOItemOrder_esRequest;
2804     req->u.esRequest = (Z_IORequest *)
2805         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2806
2807     /* to keep part ... */
2808     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2809         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2810     req->u.esRequest->toKeep->supplDescription = 0;
2811     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2812         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2813
2814     str = ZOOM_options_get(p->options, "contact-name");
2815     req->u.esRequest->toKeep->contact->name = str ?
2816         nmem_strdup(p->odr_out->mem, str) : 0;
2817
2818     str = ZOOM_options_get(p->options, "contact-phone");
2819     req->u.esRequest->toKeep->contact->phone = str ?
2820         nmem_strdup(p->odr_out->mem, str) : 0;
2821
2822     str = ZOOM_options_get(p->options, "contact-email");
2823     req->u.esRequest->toKeep->contact->email = str ?
2824         nmem_strdup(p->odr_out->mem, str) : 0;
2825
2826     req->u.esRequest->toKeep->addlBilling = 0;
2827
2828     /* not to keep part ... */
2829     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2830         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2831
2832     str = ZOOM_options_get(p->options, "itemorder-setname");
2833     if (!str)
2834         str = "default";
2835
2836     if (!*str)
2837         req->u.esRequest->notToKeep->resultSetItem = 0;
2838     else
2839     {
2840         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2841             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2842
2843         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2844             nmem_strdup(p->odr_out->mem, str);
2845         req->u.esRequest->notToKeep->resultSetItem->item =
2846             (int *) odr_malloc(p->odr_out, sizeof(int));
2847
2848         str = ZOOM_options_get(p->options, "itemorder-item");
2849         *req->u.esRequest->notToKeep->resultSetItem->item =
2850             (str ? atoi(str) : 1);
2851     }
2852     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2853
2854     return req;
2855 }
2856
2857 Z_APDU *create_admin_package(ZOOM_package p, int type,
2858                              Z_ESAdminOriginPartToKeep **toKeepP,
2859                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2860 {
2861     Z_APDU *apdu = create_es_package(p, VAL_ADMINSERVICE);
2862     if (apdu)
2863     {
2864         Z_ESAdminOriginPartToKeep  *toKeep;
2865         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2866         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
2867         const char *first_db = "Default";
2868         int num_db;
2869         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2870         if (num_db > 0)
2871             first_db = db[0];
2872
2873         r->direct_reference =
2874             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2875                                    VAL_ADMINSERVICE);
2876         r->descriptor = 0;
2877         r->indirect_reference = 0;
2878         r->which = Z_External_ESAdmin;
2879
2880         r->u.adminService = (Z_Admin *)
2881             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2882         r->u.adminService->which = Z_Admin_esRequest;
2883         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2884             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2885
2886         toKeep = r->u.adminService->u.esRequest->toKeep =
2887             (Z_ESAdminOriginPartToKeep *)
2888             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2889         toKeep->which = type;
2890         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2891         toKeep->u.create = odr_nullval();
2892         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2893
2894         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2895             (Z_ESAdminOriginPartNotToKeep *)
2896             odr_malloc(p->odr_out,
2897                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2898         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2899         notToKeep->u.recordsWillFollow = odr_nullval();
2900         if (toKeepP)
2901             *toKeepP = toKeep;
2902         if (notToKeepP)
2903             *notToKeepP = notToKeep;
2904     }
2905     return apdu;
2906 }
2907
2908 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2909 {
2910     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2911     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2912     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2913     const char *doc = ZOOM_options_get(p->options, "doc");
2914
2915     if (!doc)
2916         doc = "";
2917
2918     req->taskSpecificParameters = ext;
2919     ext->direct_reference = req->packageType;
2920     ext->descriptor = 0;
2921     ext->indirect_reference = 0;
2922
2923     ext->which = Z_External_octet;
2924     ext->u.single_ASN1_type =
2925         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
2926                            strlen(doc));
2927     return apdu;
2928 }
2929
2930 static Z_APDU *create_update_package(ZOOM_package p)
2931 {
2932     Z_APDU *apdu = 0;
2933     const char *first_db = "Default";
2934     int num_db;
2935     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2936     const char *action = ZOOM_options_get(p->options, "action");
2937     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2938     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2939     const char *record_buf = ZOOM_options_get(p->options, "record");
2940     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2941     int syntax_oid = VAL_NONE;
2942     int action_no = -1;
2943
2944     if (syntax_str)
2945         syntax_oid = oid_getvalbyname(syntax_str);
2946     if (!record_buf)
2947     {
2948         record_buf = "void";
2949         syntax_oid = VAL_SUTRS;
2950     }
2951     if (syntax_oid == VAL_NONE)
2952         syntax_oid = VAL_TEXT_XML;
2953
2954     if (num_db > 0)
2955         first_db = db[0];
2956
2957     if (!action)
2958         action = "specialUpdate";
2959
2960     if (!strcmp(action, "recordInsert"))
2961         action_no = Z_IUOriginPartToKeep_recordInsert;
2962     else if (!strcmp(action, "recordReplace"))
2963         action_no = Z_IUOriginPartToKeep_recordReplace;
2964     else if (!strcmp(action, "recordDelete"))
2965         action_no = Z_IUOriginPartToKeep_recordDelete;
2966     else if (!strcmp(action, "elementUpdate"))
2967         action_no = Z_IUOriginPartToKeep_elementUpdate;
2968     else if (!strcmp(action, "specialUpdate"))
2969         action_no = Z_IUOriginPartToKeep_specialUpdate;
2970     else
2971         return 0;
2972
2973     apdu = create_es_package(p, VAL_DBUPDATE);
2974     if (apdu)
2975     {
2976         Z_IUOriginPartToKeep *toKeep;
2977         Z_IUSuppliedRecords *notToKeep;
2978         Z_External *r = (Z_External *)
2979             odr_malloc(p->odr_out, sizeof(*r));
2980
2981         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2982
2983         r->direct_reference =
2984             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2985                                    VAL_DBUPDATE);
2986         r->descriptor = 0;
2987         r->which = Z_External_update;
2988         r->indirect_reference = 0;
2989         r->u.update = (Z_IUUpdate *)
2990             odr_malloc(p->odr_out, sizeof(*r->u.update));
2991
2992         r->u.update->which = Z_IUUpdate_esRequest;
2993         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2994             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2995         toKeep = r->u.update->u.esRequest->toKeep =
2996             (Z_IUOriginPartToKeep *)
2997             odr_malloc(p->odr_out, sizeof(*toKeep));
2998
2999         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3000         toKeep->schema = 0;
3001         toKeep->elementSetName = 0;
3002         toKeep->actionQualifier = 0;
3003         toKeep->action = odr_intdup(p->odr_out, action_no);
3004
3005         notToKeep = r->u.update->u.esRequest->notToKeep =
3006             (Z_IUSuppliedRecords *)
3007             odr_malloc(p->odr_out, sizeof(*notToKeep));
3008         notToKeep->num = 1;
3009         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3010             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3011         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3012             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3013         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3014         if (recordIdOpaque)
3015         {
3016             notToKeep->elements[0]->u.opaque =
3017                 odr_create_Odr_oct(p->odr_out,
3018                                    (const unsigned char *) recordIdOpaque,
3019                                    strlen(recordIdOpaque));
3020         }
3021         else if (recordIdNumber)
3022         {
3023             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3024
3025             notToKeep->elements[0]->u.number =
3026                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3027         }
3028         else
3029             notToKeep->elements[0]->u.opaque = 0;
3030         notToKeep->elements[0]->supplementalId = 0;
3031         notToKeep->elements[0]->correlationInfo = 0;
3032         notToKeep->elements[0]->record =
3033             z_ext_record(p->odr_out, syntax_oid,
3034                          record_buf, strlen(record_buf));
3035     }
3036     if (0 && apdu)
3037     {
3038         ODR print = odr_createmem(ODR_PRINT);
3039
3040         z_APDU(print, &apdu, 0, 0);
3041         odr_destroy(print);
3042     }
3043     return apdu;
3044 }
3045
3046 ZOOM_API(void)
3047     ZOOM_package_send(ZOOM_package p, const char *type)
3048 {
3049     Z_APDU *apdu = 0;
3050     ZOOM_connection c;
3051     if (!p)
3052         return;
3053     c = p->connection;
3054     odr_reset(p->odr_out);
3055     xfree(p->buf_out);
3056     p->buf_out = 0;
3057     if (!strcmp(type, "itemorder"))
3058     {
3059         apdu = create_es_package(p, VAL_ITEMORDER);
3060         if (apdu)
3061         {
3062             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3063
3064             r->direct_reference =
3065                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3066                                        VAL_ITEMORDER);
3067             r->descriptor = 0;
3068             r->which = Z_External_itemOrder;
3069             r->indirect_reference = 0;
3070             r->u.itemOrder = encode_item_order(p);
3071
3072             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3073         }
3074     }
3075     else if (!strcmp(type, "create"))  /* create database */
3076     {
3077         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3078                                     0, 0);
3079     }
3080     else if (!strcmp(type, "drop"))  /* drop database */
3081     {
3082         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3083                                     0, 0);
3084     }
3085     else if (!strcmp(type, "commit"))  /* commit changes */
3086     {
3087         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3088                                     0, 0);
3089     }
3090     else if (!strcmp(type, "update")) /* update record(s) */
3091     {
3092         apdu = create_update_package(p);
3093     }
3094     else if (!strcmp(type, "xmlupdate"))
3095     {
3096         apdu = create_xmlupdate_package(p);
3097     }
3098     if (apdu)
3099     {
3100         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3101         {
3102             char *buf;
3103
3104             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3105             task->u.package = p;
3106             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3107             p->buf_out = (char *) xmalloc(p->len_out);
3108             memcpy(p->buf_out, buf, p->len_out);
3109
3110             (p->refcount)++;
3111             if (!c->async)
3112             {
3113                 while (ZOOM_event(1, &c))
3114                     ;
3115             }
3116         }
3117     }
3118 }
3119
3120 ZOOM_API(ZOOM_package)
3121     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3122 {
3123     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3124
3125     p->connection = c;
3126     p->odr_out = odr_createmem(ODR_ENCODE);
3127     p->options = ZOOM_options_create_with_parent2(options, c->options);
3128     p->refcount = 1;
3129     p->buf_out = 0;
3130     p->len_out = 0;
3131     return p;
3132 }
3133
3134 ZOOM_API(void)
3135     ZOOM_package_destroy(ZOOM_package p)
3136 {
3137     if (!p)
3138         return;
3139     (p->refcount)--;
3140     if (p->refcount == 0)
3141     {
3142         odr_destroy(p->odr_out);
3143         xfree(p->buf_out);
3144
3145         ZOOM_options_destroy(p->options);
3146         xfree(p);
3147     }
3148 }
3149
3150 ZOOM_API(const char *)
3151     ZOOM_package_option_get(ZOOM_package p, const char *key)
3152 {
3153     return ZOOM_options_get(p->options, key);
3154 }
3155
3156
3157 ZOOM_API(void)
3158     ZOOM_package_option_set(ZOOM_package p, const char *key,
3159                             const char *val)
3160 {
3161     ZOOM_options_set(p->options, key, val);
3162 }
3163
3164 static int ZOOM_connection_exec_task(ZOOM_connection c)
3165 {
3166     ZOOM_task task = c->tasks;
3167     zoom_ret ret = zoom_complete;
3168
3169     if (!task)
3170         return 0;
3171     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3172             c, task->which, task->running);
3173     if (c->error != ZOOM_ERROR_NONE)
3174     {
3175         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3176                 "removing tasks because of error = %d", c, c->error);
3177         ZOOM_connection_remove_tasks(c);
3178         return 0;
3179     }
3180     if (task->running)
3181     {
3182         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3183                 "task already running", c);
3184         return 0;
3185     }
3186     task->running = 1;
3187     ret = zoom_complete;
3188     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3189     {
3190         switch (task->which)
3191         {
3192         case ZOOM_TASK_SEARCH:
3193             if (c->proto == PROTO_HTTP)
3194                 ret = ZOOM_connection_srw_send_search(c);
3195             else
3196                 ret = ZOOM_connection_send_search(c);
3197             break;
3198         case ZOOM_TASK_RETRIEVE:
3199             if (c->proto == PROTO_HTTP)
3200                 ret = ZOOM_connection_srw_send_search(c);
3201             else
3202                 ret = send_present(c);
3203             break;
3204         case ZOOM_TASK_CONNECT:
3205             ret = do_connect(c);
3206             break;
3207         case ZOOM_TASK_SCAN:
3208             ret = send_scan(c);
3209             break;
3210         case ZOOM_TASK_PACKAGE:
3211             ret = send_package(c);
3212             break;
3213         case ZOOM_TASK_SORT:
3214             c->tasks->u.sort.resultset->r_sort_spec =
3215                 c->tasks->u.sort.q->sort_spec;
3216             ret = send_sort(c, c->tasks->u.sort.resultset);
3217             break;
3218         }
3219     }
3220     else
3221     {
3222         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3223                 "remove tasks because no connection exist", c);
3224         ZOOM_connection_remove_tasks(c);
3225     }
3226     if (ret == zoom_complete)
3227     {
3228         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3229                 "task removed (complete)", c);
3230         ZOOM_connection_remove_task(c);
3231         return 0;
3232     }
3233     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3234             "task pending", c);
3235     return 1;
3236 }
3237
3238 static zoom_ret send_sort_present(ZOOM_connection c)
3239 {
3240     zoom_ret r = zoom_complete;
3241
3242     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3243         r = send_sort(c, c->tasks->u.search.resultset);
3244     if (r == zoom_complete)
3245         r = send_present(c);
3246     return r;
3247 }
3248
3249 static int es_response(ZOOM_connection c,
3250                        Z_ExtendedServicesResponse *res)
3251 {
3252     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3253         return 0;
3254     if (res->diagnostics && res->num_diagnostics > 0)
3255         response_diag(c, res->diagnostics[0]);
3256     if (res->taskPackage &&
3257         res->taskPackage->which == Z_External_extendedService)
3258     {
3259         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3260         Odr_oct *id = taskPackage->targetReference;
3261
3262         if (id)
3263             ZOOM_options_setl(c->tasks->u.package->options,
3264                               "targetReference", (char*) id->buf, id->len);
3265     }
3266     if (res->taskPackage &&
3267         res->taskPackage->which == Z_External_octet)
3268     {
3269         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3270         ZOOM_options_setl(c->tasks->u.package->options,
3271                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3272     }
3273     return 1;
3274 }
3275
3276 static void interpret_init_diag(ZOOM_connection c,
3277                                 Z_DiagnosticFormat *diag)
3278 {
3279     if (diag->num > 0)
3280     {
3281         Z_DiagnosticFormat_s *ds = diag->elements[0];
3282         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3283             response_default_diag(c, ds->u.defaultDiagRec);
3284     }
3285 }
3286
3287
3288 static void interpret_otherinformation_field(ZOOM_connection c,
3289                                              Z_OtherInformation *ui)
3290 {
3291     int i;
3292     for (i = 0; i < ui->num_elements; i++)
3293     {
3294         Z_OtherInformationUnit *unit = ui->list[i];
3295         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3296             unit->information.externallyDefinedInfo &&
3297             unit->information.externallyDefinedInfo->which ==
3298             Z_External_diag1)
3299         {
3300             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3301         }
3302     }
3303 }
3304
3305 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3306 {
3307     Z_InitResponse *initrs;
3308
3309     c->mask = 0;
3310     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3311     switch(apdu->which)
3312     {
3313     case Z_APDU_initResponse:
3314         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3315         initrs = apdu->u.initResponse;
3316         ZOOM_connection_option_set(c, "serverImplementationId",
3317                                    initrs->implementationId ?
3318                                    initrs->implementationId : "");
3319         ZOOM_connection_option_set(c, "serverImplementationName",
3320                                    initrs->implementationName ?
3321                                    initrs->implementationName : "");
3322         ZOOM_connection_option_set(c, "serverImplementationVersion",
3323                                    initrs->implementationVersion ?
3324                                    initrs->implementationVersion : "");
3325         /* Set the three old options too, for old applications */
3326         ZOOM_connection_option_set(c, "targetImplementationId",
3327                                    initrs->implementationId ?
3328                                    initrs->implementationId : "");
3329         ZOOM_connection_option_set(c, "targetImplementationName",
3330                                    initrs->implementationName ?
3331                                    initrs->implementationName : "");
3332         ZOOM_connection_option_set(c, "targetImplementationVersion",
3333                                    initrs->implementationVersion ?
3334                                    initrs->implementationVersion : "");
3335         if (!*initrs->result)
3336         {
3337             Z_External *uif = initrs->userInformationField;
3338
3339             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3340
3341             if (uif && uif->which == Z_External_userInfo1)
3342                 interpret_otherinformation_field(c, uif->u.userInfo1);
3343         }
3344         else
3345         {
3346             char *cookie =
3347                 yaz_oi_get_string_oidval(&apdu->u.initResponse->otherInfo,
3348                                          VAL_COOKIE, 1, 0);
3349             xfree(c->cookie_in);
3350             c->cookie_in = 0;
3351             if (cookie)
3352                 c->cookie_in = xstrdup(cookie);
3353             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3354                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3355                 c->support_named_resultsets = 1;
3356             if (c->tasks)
3357             {
3358                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3359                 ZOOM_connection_remove_task(c);
3360             }
3361             ZOOM_connection_exec_task(c);
3362         }
3363         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3364         {
3365             NMEM tmpmem = nmem_create();
3366             Z_CharSetandLanguageNegotiation *p =
3367                 yaz_get_charneg_record(initrs->otherInfo);
3368
3369             if (p)
3370             {
3371                 char *charset = NULL, *lang = NULL;
3372                 int sel;
3373
3374                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3375                 yaz_log(log_details, "%p recv_apdu target accepted: "
3376                         "charset %s, language %s, select %d",
3377                         c,
3378                         charset ? charset : "none", lang ? lang : "none", sel);
3379                 if (charset)
3380                     ZOOM_connection_option_set(c, "negotiation-charset",
3381                                                charset);
3382                 if (lang)
3383                     ZOOM_connection_option_set(c, "negotiation-lang",
3384                                                lang);
3385
3386                 ZOOM_connection_option_set(
3387                     c,  "negotiation-charset-in-effect-for-records",
3388                     (sel != 0) ? "1" : "0");
3389                 nmem_destroy(tmpmem);
3390             }
3391         }
3392         break;
3393     case Z_APDU_searchResponse:
3394         yaz_log(log_api, "%p recv_apdu Search response", c);
3395         handle_search_response(c, apdu->u.searchResponse);
3396         if (send_sort_present(c) == zoom_complete)
3397             ZOOM_connection_remove_task(c);
3398         break;
3399     case Z_APDU_presentResponse:
3400         yaz_log(log_api, "%p recv_apdu Present response", c);
3401         handle_present_response(c, apdu->u.presentResponse);
3402         if (send_present(c) == zoom_complete)
3403             ZOOM_connection_remove_task(c);
3404         break;
3405     case Z_APDU_sortResponse:
3406         yaz_log(log_api, "%p recv_apdu Sort response", c);
3407         sort_response(c, apdu->u.sortResponse);
3408         if (send_present(c) == zoom_complete)
3409             ZOOM_connection_remove_task(c);
3410         break;
3411     case Z_APDU_scanResponse:
3412         yaz_log(log_api, "%p recv_apdu Scan response", c);
3413         scan_response(c, apdu->u.scanResponse);
3414         ZOOM_connection_remove_task(c);
3415         break;
3416     case Z_APDU_extendedServicesResponse:
3417         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3418         es_response(c, apdu->u.extendedServicesResponse);
3419         ZOOM_connection_remove_task(c);
3420         break;
3421     case Z_APDU_close:
3422         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3423         if (c->reconnect_ok)
3424         {
3425             do_close(c);
3426             c->reconnect_ok = 0;
3427             c->tasks->running = 0;
3428             ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
3429         }
3430         else
3431         {
3432             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3433             do_close(c);
3434         }
3435         break;
3436     default:
3437         yaz_log(log_api, "%p Received unknown PDU", c);
3438         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3439         do_close(c);
3440     }
3441 }
3442
3443 #if YAZ_HAVE_XML2
3444 static void handle_srw_response(ZOOM_connection c,
3445                                 Z_SRW_searchRetrieveResponse *res)
3446 {
3447     ZOOM_resultset resultset = 0;
3448     int i;
3449     NMEM nmem;
3450     ZOOM_Event event;
3451     int *start;
3452
3453     if (!c->tasks)
3454         return;
3455
3456     if (c->tasks->which == ZOOM_TASK_SEARCH)
3457     {
3458         resultset = c->tasks->u.search.resultset;
3459         start = &c->tasks->u.search.start;
3460     }
3461     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3462     {
3463         resultset = c->tasks->u.retrieve.resultset;
3464         start = &c->tasks->u.retrieve.start;
3465     }
3466     else
3467         return ;
3468
3469     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3470     ZOOM_connection_put_event(c, event);
3471
3472     resultset->size = 0;
3473
3474     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3475
3476     if (res->numberOfRecords)
3477         resultset->size = *res->numberOfRecords;
3478
3479     for (i = 0; i<res->num_records; i++)
3480     {
3481         int pos;
3482
3483         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3484             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3485
3486         if (res->records[i].recordPosition &&
3487             *res->records[i].recordPosition > 0)
3488             pos = *res->records[i].recordPosition - 1;
3489         else
3490             pos = *start + i;
3491
3492         npr->databaseName = 0;
3493         npr->which = Z_NamePlusRecord_databaseRecord;
3494         npr->u.databaseRecord = (Z_External *)
3495             odr_malloc(c->odr_in, sizeof(Z_External));
3496         npr->u.databaseRecord->descriptor = 0;
3497         npr->u.databaseRecord->direct_reference =
3498             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3499         npr->u.databaseRecord->which = Z_External_octet;
3500
3501         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3502             odr_malloc(c->odr_in, sizeof(Odr_oct));
3503         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3504             res->records[i].recordData_buf;
3505         npr->u.databaseRecord->u.octet_aligned->len =
3506             npr->u.databaseRecord->u.octet_aligned->size =
3507             res->records[i].recordData_len;
3508         record_cache_add(resultset, npr, pos);
3509     }
3510     if (res->num_diagnostics > 0)
3511     {
3512         const char *uri = res->diagnostics[0].uri;
3513         if (uri)
3514         {
3515             int code = 0;
3516             const char *cp;
3517             if ((cp = strrchr(uri, '/')))
3518                 code = atoi(cp+1);
3519             set_dset_error(c, code, uri,
3520                            res->diagnostics[0].details, 0);
3521         }
3522     }
3523     nmem = odr_extract_mem(c->odr_in);
3524     nmem_transfer(resultset->odr->mem, nmem);
3525     nmem_destroy(nmem);
3526 }
3527 #endif
3528
3529 #if YAZ_HAVE_XML2
3530 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3531 {
3532     int ret = -1;
3533     const char *content_type = z_HTTP_header_lookup(hres->headers,
3534                                                     "Content-Type");
3535     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3536                                                        "Connection");
3537     c->mask = 0;
3538     yaz_log(log_details, "%p handle_http", c);
3539
3540     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3541     {
3542         Z_SOAP *soap_package = 0;
3543         ODR o = c->odr_in;
3544         Z_SOAP_Handler soap_handlers[2] = {
3545             {"http://www.loc.gov/zing/srw/", 0,
3546              (Z_SOAP_fun) yaz_srw_codec},
3547             {0, 0, 0}
3548         };
3549         ret = z_soap_codec(o, &soap_package,
3550                            &hres->content_buf, &hres->content_len,
3551                            soap_handlers);
3552         if (!ret && soap_package->which == Z_SOAP_generic &&
3553             soap_package->u.generic->no == 0)
3554         {
3555             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3556             if (sr->which == Z_SRW_searchRetrieve_response)
3557                 handle_srw_response(c, sr->u.response);
3558             else
3559                 ret = -1;
3560         }
3561         else if (!ret && (soap_package->which == Z_SOAP_fault
3562                           || soap_package->which == Z_SOAP_error))
3563         {
3564             set_HTTP_error(c, hres->code,
3565                            soap_package->u.fault->fault_code,
3566                            soap_package->u.fault->fault_string);
3567         }
3568         else
3569             ret = -1;
3570     }
3571     if (ret)
3572     {
3573         if (hres->code != 200)
3574             set_HTTP_error(c, hres->code, 0, 0);
3575         else
3576             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3577         do_close(c);
3578     }
3579     ZOOM_connection_remove_task(c);
3580     if (!strcmp(hres->version, "1.0"))
3581     {
3582         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3583         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3584             do_close(c);
3585     }
3586     else
3587     {
3588         /* HTTP 1.1: only if no close we stay alive .. */
3589         if (connection_head && !strcmp(connection_head, "close"))
3590             do_close(c);
3591     }
3592 }
3593 #endif
3594
3595 static int do_read(ZOOM_connection c)
3596 {
3597     int r, more;
3598     ZOOM_Event event;
3599
3600     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
3601     ZOOM_connection_put_event(c, event);
3602
3603     r = cs_get(c->cs, &c->buf_in, &c->len_in);
3604     more = cs_more(c->cs);
3605     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3606     if (r == 1)
3607         return 0;
3608     if (r <= 0)
3609     {
3610         if (c->reconnect_ok)
3611         {
3612             yaz_log(log_details, "%p do_read reconnect read", c);
3613             do_close(c);
3614             c->reconnect_ok = 0;
3615             c->tasks->running = 0;
3616             ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
3617         }
3618         else
3619         {
3620             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3621             do_close(c);
3622         }
3623     }
3624     else
3625     {
3626         Z_GDU *gdu;
3627         ZOOM_Event event;
3628
3629         odr_reset(c->odr_in);
3630         odr_setbuf(c->odr_in, c->buf_in, r, 0);
3631         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
3632         ZOOM_connection_put_event(c, event);
3633
3634         if (!z_GDU(c->odr_in, &gdu, 0, 0))
3635         {
3636             int x;
3637             int err = odr_geterrorx(c->odr_in, &x);
3638             char msg[60];
3639             const char *element = odr_getelement(c->odr_in);
3640             sprintf(msg, "ODR code %d:%d element=%-20s",
3641                     err, x, element ? element : "<unknown>");
3642             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3643             do_close(c);
3644         }
3645         else if (gdu->which == Z_GDU_Z3950)
3646             recv_apdu(c, gdu->u.z3950);
3647         else if (gdu->which == Z_GDU_HTTP_Response)
3648         {
3649 #if YAZ_HAVE_XML2
3650             handle_http(c, gdu->u.HTTP_Response);
3651 #else
3652             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3653             do_close(c);
3654 #endif
3655         }
3656         c->reconnect_ok = 0;
3657     }
3658     return 1;
3659 }
3660
3661 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
3662 {
3663     int r;
3664     ZOOM_Event event;
3665
3666     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3667     ZOOM_connection_put_event(c, event);
3668
3669     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3670     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3671     {
3672         yaz_log(log_details, "%p do_write_ex write failed", c);
3673         if (c->reconnect_ok)
3674         {
3675             do_close(c);
3676             c->reconnect_ok = 0;
3677             c->tasks->running = 0;
3678             ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
3679             return zoom_pending;
3680         }
3681         if (c->state == STATE_CONNECTING)
3682             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3683         else
3684             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3685         do_close(c);
3686         return zoom_complete;
3687     }
3688     else if (r == 1)
3689     {
3690         c->mask = ZOOM_SELECT_EXCEPT;
3691         if (c->cs->io_pending & CS_WANT_WRITE)
3692             c->mask += ZOOM_SELECT_WRITE;
3693         if (c->cs->io_pending & CS_WANT_READ)
3694             c->mask += ZOOM_SELECT_READ;
3695         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3696                 c, c->mask);
3697     }
3698     else
3699     {
3700         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3701         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3702                 c, c->mask);
3703     }
3704     return zoom_pending;
3705 }
3706
3707 static zoom_ret do_write(ZOOM_connection c)
3708 {
3709     return do_write_ex(c, c->buf_out, c->len_out);
3710 }
3711
3712
3713 ZOOM_API(const char *)
3714     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
3715 {
3716     return ZOOM_options_get(c->options, key);
3717 }
3718
3719 ZOOM_API(const char *)
3720     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
3721 {
3722     return ZOOM_options_getl(c->options, key, lenp);
3723 }
3724
3725 ZOOM_API(void)
3726     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
3727                                const char *val)
3728 {
3729     ZOOM_options_set(c->options, key, val);
3730 }
3731
3732 ZOOM_API(void)
3733     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
3734                                 const char *val, int len)
3735 {
3736     ZOOM_options_setl(c->options, key, val, len);
3737 }
3738
3739 ZOOM_API(const char *)
3740     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
3741 {
3742     return ZOOM_options_get(r->options, key);
3743 }
3744
3745 ZOOM_API(void)
3746     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
3747                               const char *val)
3748 {
3749     ZOOM_options_set(r->options, key, val);
3750 }
3751
3752
3753 ZOOM_API(int)
3754     ZOOM_connection_errcode(ZOOM_connection c)
3755 {
3756     return ZOOM_connection_error(c, 0, 0);
3757 }
3758
3759 ZOOM_API(const char *)
3760     ZOOM_connection_errmsg(ZOOM_connection c)
3761 {
3762     const char *msg;
3763     ZOOM_connection_error(c, &msg, 0);
3764     return msg;
3765 }
3766
3767 ZOOM_API(const char *)
3768     ZOOM_connection_addinfo(ZOOM_connection c)
3769 {
3770     const char *addinfo;
3771     ZOOM_connection_error(c, 0, &addinfo);
3772     return addinfo;
3773 }
3774
3775 ZOOM_API(const char *)
3776     ZOOM_connection_diagset(ZOOM_connection c)
3777 {
3778     const char *diagset;
3779     ZOOM_connection_error_x(c, 0, 0, &diagset);
3780     return diagset;
3781 }
3782
3783 ZOOM_API(const char *)
3784     ZOOM_diag_str(int error)
3785 {
3786     switch (error)
3787     {
3788     case ZOOM_ERROR_NONE:
3789         return "No error";
3790     case ZOOM_ERROR_CONNECT:
3791         return "Connect failed";
3792     case ZOOM_ERROR_MEMORY:
3793         return "Out of memory";
3794     case ZOOM_ERROR_ENCODE:
3795         return "Encoding failed";
3796     case ZOOM_ERROR_DECODE:
3797         return "Decoding failed";
3798     case ZOOM_ERROR_CONNECTION_LOST:
3799         return "Connection lost";
3800     case ZOOM_ERROR_INIT:
3801         return "Init rejected";
3802     case ZOOM_ERROR_INTERNAL:
3803         return "Internal failure";
3804     case ZOOM_ERROR_TIMEOUT:
3805         return "Timeout";
3806     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3807         return "Unsupported protocol";
3808     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3809         return "Unsupported query type";
3810     case ZOOM_ERROR_INVALID_QUERY:
3811         return "Invalid query";
3812     case ZOOM_ERROR_CQL_PARSE:
3813         return "CQL parsing error";
3814     case ZOOM_ERROR_CQL_TRANSFORM:
3815         return "CQL transformation error";
3816     case ZOOM_ERROR_CCL_CONFIG:
3817         return "CCL configuration error";
3818     case ZOOM_ERROR_CCL_PARSE:
3819         return "CCL parsing error";
3820     default:
3821         return diagbib1_str(error);
3822     }
3823 }
3824
3825 ZOOM_API(int)
3826     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
3827                             const char **addinfo, const char **diagset)
3828 {
3829     int error = c->error;
3830     if (cp)
3831     {
3832         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3833             *cp = ZOOM_diag_str(error);
3834         else if (!strcmp(c->diagset, "HTTP"))
3835             *cp = z_HTTP_errmsg(c->error);
3836         else if (!strcmp(c->diagset, "Bib-1"))
3837             *cp = ZOOM_diag_str(error);
3838         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3839             *cp = yaz_diag_srw_str(c->error);
3840         else
3841             *cp = "Unknown error and diagnostic set";
3842     }
3843     if (addinfo)
3844         *addinfo = c->addinfo ? c->addinfo : "";
3845     if (diagset)
3846         *diagset = c->diagset ? c->diagset : "";
3847     return c->error;
3848 }
3849
3850 ZOOM_API(int)
3851     ZOOM_connection_error(ZOOM_connection c, const char **cp,
3852                           const char **addinfo)
3853 {
3854     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3855 }
3856
3857 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
3858 {
3859     ZOOM_Event event = 0;
3860     int r = cs_look(c->cs);
3861     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3862             c, mask, r);
3863
3864     if (mask & ZOOM_SELECT_EXCEPT)
3865     {
3866         if (r == CS_CONNECT)
3867             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3868         else
3869             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3870         do_close(c);
3871         return;
3872     }
3873     if (r == CS_NONE)
3874     {
3875         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
3876         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3877         do_close(c);
3878         ZOOM_connection_put_event(c, event);
3879     }
3880     else if (r == CS_CONNECT)
3881     {
3882         int ret = ret = cs_rcvconnect(c->cs);
3883         yaz_log(log_details, "%p ZOOM_connection_do_io "
3884                 "cs_rcvconnect returned %d", c, ret);
3885         if (ret == 1)
3886         {
3887             c->mask = ZOOM_SELECT_EXCEPT;
3888             if (c->cs->io_pending & CS_WANT_WRITE)
3889                 c->mask += ZOOM_SELECT_WRITE;
3890             if (c->cs->io_pending & CS_WANT_READ)
3891                 c->mask += ZOOM_SELECT_READ;
3892         }
3893         else if (ret == 0)
3894         {
3895             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
3896             ZOOM_connection_put_event(c, event);
3897             get_cert(c);
3898             if (c->proto == PROTO_Z3950)
3899                 ZOOM_connection_send_init(c);
3900             else
3901             {
3902                 /* no init request for SRW .. */
3903                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3904                 ZOOM_connection_remove_task(c);
3905                 c->mask = 0;
3906                 ZOOM_connection_exec_task(c);
3907             }
3908             c->state = STATE_ESTABLISHED;
3909         }
3910         else
3911         {
3912             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3913             do_close(c);
3914         }
3915     }
3916     else
3917     {
3918         if (mask & ZOOM_SELECT_READ)
3919             do_read(c);
3920         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3921             do_write(c);
3922     }
3923 }
3924
3925 ZOOM_API(int)
3926     ZOOM_connection_last_event(ZOOM_connection cs)
3927 {
3928     if (!cs)
3929         return ZOOM_EVENT_NONE;
3930     return cs->last_event;
3931 }
3932
3933 ZOOM_API(int)
3934     ZOOM_event(int no, ZOOM_connection *cs)
3935 {
3936     int timeout = 30;      /* default timeout in seconds */
3937     int timeout_set = 0;   /* whether it was overriden at all */
3938 #if HAVE_SYS_POLL_H
3939     struct pollfd pollfds[1024];
3940     ZOOM_connection poll_cs[1024];
3941 #else
3942     struct timeval tv;
3943     fd_set input, output, except;
3944 #endif
3945     int i, r, nfds;
3946     int max_fd = 0;
3947
3948     yaz_log(log_details, "ZOOM_event(no=%d,cs=%p)", no, cs);
3949     for (i = 0; i<no; i++)
3950     {
3951         ZOOM_connection c = cs[i];
3952         ZOOM_Event event;
3953         if (c && (event = ZOOM_connection_get_event(c)))
3954         {
3955             ZOOM_Event_destroy(event);
3956             return i+1;
3957         }
3958     }
3959     for (i = 0; i<no; i++)
3960     {
3961         ZOOM_connection c = cs[i];
3962         if (c)
3963         {
3964             ZOOM_Event event;
3965             ZOOM_connection_exec_task(c);
3966             if ((event = ZOOM_connection_get_event(c)))
3967             {
3968                 ZOOM_Event_destroy(event);
3969                 return i+1;
3970             }
3971         }
3972     }
3973 #if HAVE_SYS_POLL_H
3974
3975 #else
3976     FD_ZERO(&input);
3977     FD_ZERO(&output);
3978     FD_ZERO(&except);
3979 #endif
3980     nfds = 0;
3981     for (i = 0; i<no; i++)
3982     {
3983         ZOOM_connection c = cs[i];
3984         int fd, mask;
3985         int this_timeout;
3986
3987         if (!c)
3988             continue;
3989         fd = z3950_connection_socket(c);
3990         mask = z3950_connection_mask(c);
3991
3992         if (fd == -1)
3993             continue;
3994         if (max_fd < fd)
3995             max_fd = fd;
3996
3997         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3998         this_timeout = ZOOM_options_get_int(c->options, "timeout", -2);
3999         if (this_timeout != -2)
4000         {
4001             /* ensure the minimum timeout is used */
4002             if (!timeout_set)
4003                 timeout = this_timeout;
4004             else if (this_timeout != -1 && this_timeout < timeout)
4005                 timeout = this_timeout;
4006             timeout_set = 1;
4007         }
4008 #if HAVE_SYS_POLL_H
4009         if (mask)
4010         {
4011             short poll_events = 0;
4012
4013             if (mask & ZOOM_SELECT_READ)
4014                 poll_events += POLLIN;
4015             if (mask & ZOOM_SELECT_WRITE)
4016                 poll_events += POLLOUT;
4017             if (mask & ZOOM_SELECT_EXCEPT)
4018                 poll_events += POLLERR;
4019             pollfds[nfds].fd = fd;
4020             pollfds[nfds].events = poll_events;
4021             pollfds[nfds].revents = 0;
4022             poll_cs[nfds] = c;
4023             nfds++;
4024         }
4025 #else
4026         if (mask & ZOOM_SELECT_READ)
4027         {
4028             FD_SET(fd, &input);
4029             nfds++;
4030         }
4031         if (mask & ZOOM_SELECT_WRITE)
4032         {
4033             FD_SET(fd, &output);
4034             nfds++;
4035         }
4036         if (mask & ZOOM_SELECT_EXCEPT)
4037         {
4038             FD_SET(fd, &except);
4039             nfds++;
4040         }
4041 #endif
4042     }
4043     if (!nfds)
4044         return 0;
4045
4046 #if HAVE_SYS_POLL_H
4047     r = poll(pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
4048     for (i = 0; i<nfds; i++)
4049     {
4050         ZOOM_connection c = poll_cs[i];
4051         if (r && c->mask)
4052         {
4053             int mask = 0;
4054             if (pollfds[i].revents & POLLIN)
4055                 mask += ZOOM_SELECT_READ;
4056             if (pollfds[i].revents & POLLOUT)
4057                 mask += ZOOM_SELECT_WRITE;
4058             if (pollfds[i].revents & POLLERR)
4059                 mask += ZOOM_SELECT_EXCEPT;
4060             if (mask)
4061                 ZOOM_connection_do_io(c, mask);
4062         }
4063         else if (r == 0 && c->mask)
4064         {
4065             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4066             /* timeout and this connection was waiting */
4067             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4068             do_close(c);
4069             ZOOM_connection_put_event(c, event);
4070         }
4071     }
4072 #else
4073     tv.tv_sec = timeout;
4074     tv.tv_usec = 0;
4075     r = select(max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
4076     for (i = 0; i<no; i++)
4077     {
4078         ZOOM_connection c = cs[i];
4079         int fd, mask;
4080
4081         if (!c)
4082             continue;
4083         fd = z3950_connection_socket(c);
4084         mask = 0;
4085         if (r && c->mask)
4086         {
4087             /* no timeout and real socket */
4088             if (FD_ISSET(fd, &input))
4089                 mask += ZOOM_SELECT_READ;
4090             if (FD_ISSET(fd, &output))
4091                 mask += ZOOM_SELECT_WRITE;
4092             if (FD_ISSET(fd, &except))
4093                 mask += ZOOM_SELECT_EXCEPT;
4094             if (mask)
4095                 ZOOM_connection_do_io(c, mask);
4096         }
4097         if (r == 0 && c->mask)
4098         {
4099             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4100             /* timeout and this connection was waiting */
4101             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4102             do_close(c);
4103             ZOOM_connection_put_event(c, event);
4104         }
4105     }
4106 #endif
4107     for (i = 0; i<no; i++)
4108     {
4109         ZOOM_connection c = cs[i];
4110         ZOOM_Event event;
4111         if (c && (event = ZOOM_connection_get_event(c)))
4112         {
4113             ZOOM_Event_destroy(event);
4114             return i+1;
4115         }
4116     }
4117     return 0;
4118 }
4119
4120
4121 /*
4122  * Returns an xmalloc()d string containing RPN that corresponds to the
4123  * CQL passed in.  On error, sets the Connection object's error state
4124  * and returns a null pointer.
4125  * ### We could cache CQL parser and/or transformer in Connection.
4126  */
4127 static char *cql2pqf(ZOOM_connection c, const char *cql)
4128 {
4129     CQL_parser parser;
4130     int error;
4131     struct cql_node *node;
4132     const char *cqlfile;
4133     static cql_transform_t trans;
4134     char pqfbuf[512];
4135
4136     parser = cql_parser_create();
4137     if ((error = cql_parser_string(parser, cql)) != 0) {
4138         cql_parser_destroy(parser);
4139         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4140         return 0;
4141     }
4142
4143     node = cql_parser_result(parser);
4144     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4145
4146     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4147     if (cqlfile == 0) {
4148         cql_parser_destroy(parser);
4149         cql_node_destroy(node);
4150         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4151         return 0;
4152     }
4153
4154     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4155         char buf[512];
4156         cql_parser_destroy(parser);
4157         cql_node_destroy(node);
4158         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4159                 cqlfile, strerror(errno));
4160         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4161         return 0;
4162     }
4163
4164     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4165     cql_parser_destroy(parser);
4166     cql_node_destroy(node);
4167     if (error != 0) {
4168         char buf[512];
4169         const char *addinfo;
4170         error = cql_transform_error(trans, &addinfo);
4171         cql_transform_close(trans);
4172         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4173         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4174         return 0;
4175     }
4176
4177     cql_transform_close(trans);
4178     return xstrdup(pqfbuf);
4179 }
4180
4181 /*
4182  * Local variables:
4183  * c-basic-offset: 4
4184  * indent-tabs-mode: nil
4185  * End:
4186  * vim: shiftwidth=4 tabstop=8 expandtab
4187  */
4188