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 1.94 2006-10-31 14:08:03 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 #if FD_SETSIZE < 512
  44 #define FD_SETSIZE 512
  45 #endif
  46 #include <winsock.h>
  47 #endif
  48
  49 static int log_api = 0;
  50 static int log_details = 0;
  51
  52 typedef enum {
  53     zoom_pending,
  54     zoom_complete
  55 } zoom_ret;
  56
  57 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
  58 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  59 static char *cql2pqf(ZOOM_connection c, const char *cql);
  60
  61 static void initlog(void)
  62 {
  63     static int log_level_initialized = 0;
  64     if (!log_level_initialized)
  65     {
  66         log_api = yaz_log_module_level("zoom");
  67         log_details = yaz_log_module_level("zoomdetails");
  68         log_level_initialized = 1;
  69     }
  70 }
  71
  72 static ZOOM_Event ZOOM_Event_create(int kind)
  73 {
  74     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  75     event->kind = kind;
  76     event->next = 0;
  77     event->prev = 0;
  78     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
  79     return event;
  80 }
  81
  82 static void ZOOM_Event_destroy(ZOOM_Event event)
  83 {
  84     xfree(event);
  85 }
  86
  87 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
  88 {
  89     if (c->m_queue_back)
  90     {
  91         c->m_queue_back->prev = event;
  92         assert(c->m_queue_front);
  93     }
  94     else
  95     {
  96         assert(!c->m_queue_front);
  97         c->m_queue_front = event;
  98     }
  99     event->next = c->m_queue_back;
 100     event->prev = 0;
 101     c->m_queue_back = event;
 102 }
 103
 104 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 105 {
 106     ZOOM_Event event = c->m_queue_front;
 107     if (!event)
 108     {
 109         c->last_event = ZOOM_EVENT_NONE;
 110         return 0;
 111     }
 112     assert(c->m_queue_back);
 113     c->m_queue_front = event->prev;
 114     if (c->m_queue_front)
 115     {
 116         assert(c->m_queue_back);
 117         c->m_queue_front->next = 0;
 118     }
 119     else
 120         c->m_queue_back = 0;
 121     c->last_event = event->kind;
 122     return event;
 123 }
 124
 125
 126 static void set_dset_error(ZOOM_connection c, int error,
 127                            const char *dset,
 128                            const char *addinfo, const char *addinfo2)
 129 {
 130     char *cp;
 131
 132     xfree(c->addinfo);
 133     c->addinfo = 0;
 134     c->error = error;
 135     if (!c->diagset || strcmp(dset, c->diagset))
 136     {
 137         xfree(c->diagset);
 138         c->diagset = xstrdup(dset);
 139         /* remove integer part from SRW diagset .. */
 140         if ((cp = strrchr(c->diagset, '/')))
 141             *cp = '\0';
 142     }
 143     if (addinfo && addinfo2)
 144     {
 145         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 146         strcpy(c->addinfo, addinfo);
 147         strcat(c->addinfo, addinfo2);
 148     }
 149     else if (addinfo)
 150         c->addinfo = xstrdup(addinfo);
 151     if (error)
 152         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 153                 c, c->host_port ? c->host_port : "<>", dset, error,
 154                 addinfo ? addinfo : "",
 155                 addinfo2 ? addinfo2 : "");
 156 }
 157
 158 #if YAZ_HAVE_XML2
 159 static void set_HTTP_error(ZOOM_connection c, int error,
 160                            const char *addinfo, const char *addinfo2)
 161 {
 162     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 163 }
 164 #endif
 165
 166 static void set_ZOOM_error(ZOOM_connection c, int error,
 167                            const char *addinfo)
 168 {
 169     set_dset_error(c, error, "ZOOM", addinfo, 0);
 170 }
 171
 172 static void clear_error(ZOOM_connection c)
 173 {
 174     /*
 175      * If an error is tied to an operation then it's ok to clear: for
 176      * example, a diagnostic returned from a search is cleared by a
 177      * subsequent search.  However, problems such as Connection Lost
 178      * or Init Refused are not cleared, because they are not
 179      * recoverable: doing another search doesn't help.
 180      */
 181     switch (c->error)
 182     {
 183     case ZOOM_ERROR_CONNECT:
 184     case ZOOM_ERROR_MEMORY:
 185     case ZOOM_ERROR_DECODE:
 186     case ZOOM_ERROR_CONNECTION_LOST:
 187     case ZOOM_ERROR_INIT:
 188     case ZOOM_ERROR_INTERNAL:
 189     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 190         break;
 191     default:
 192         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 193     }
 194 }
 195
 196 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 197 {
 198     ZOOM_task *taskp = &c->tasks;
 199     while (*taskp)
 200         taskp = &(*taskp)->next;
 201     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 202     (*taskp)->running = 0;
 203     (*taskp)->which = which;
 204     (*taskp)->next = 0;
 205     clear_error(c);
 206     return *taskp;
 207 }
 208
 209 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 210 {
 211     return c->tasks ? 0 : 1;
 212 }
 213
 214 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 215 {
 216     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 217
 218     task->next = c->tasks;
 219     c->tasks = task;
 220
 221     task->running = 0;
 222     task->which = which;
 223     clear_error(c);
 224     return task;
 225 }
 226
 227 void ZOOM_connection_remove_task(ZOOM_connection c)
 228 {
 229     ZOOM_task task = c->tasks;
 230
 231     if (task)
 232     {
 233         c->tasks = task->next;
 234         switch (task->which)
 235         {
 236         case ZOOM_TASK_SEARCH:
 237             ZOOM_resultset_destroy(task->u.search.resultset);
 238             xfree(task->u.search.syntax);
 239             xfree(task->u.search.elementSetName);
 240             break;
 241         case ZOOM_TASK_RETRIEVE:
 242             ZOOM_resultset_destroy(task->u.retrieve.resultset);
 243             xfree(task->u.retrieve.syntax);
 244             xfree(task->u.retrieve.elementSetName);
 245             break;
 246         case ZOOM_TASK_CONNECT:
 247             break;
 248         case ZOOM_TASK_SCAN:
 249             ZOOM_scanset_destroy(task->u.scan.scan);
 250             break;
 251         case ZOOM_TASK_PACKAGE:
 252             ZOOM_package_destroy(task->u.package);
 253             break;
 254         case ZOOM_TASK_SORT:
 255             ZOOM_resultset_destroy(task->u.sort.resultset);
 256             ZOOM_query_destroy(task->u.sort.q);
 257             break;
 258         default:
 259             assert(0);
 260         }
 261         xfree(task);
 262
 263         if (!c->tasks)
 264         {
 265             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 266             ZOOM_connection_put_event(c, event);
 267         }
 268     }
 269 }
 270
 271 static int ZOOM_connection_exec_task(ZOOM_connection c);
 272
 273 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 274 {
 275     while (c->tasks)
 276         ZOOM_connection_remove_task(c);
 277 }
 278
 279 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 280                                        const char *syntax,
 281                                        const char *elementSetName);
 282
 283 ZOOM_API(ZOOM_connection)
 284     ZOOM_connection_create(ZOOM_options options)
 285 {
 286     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 287
 288     initlog();
 289
 290     yaz_log(log_api, "%p ZOOM_connection_create", c);
 291
 292     c->proto = PROTO_Z3950;
 293     c->cs = 0;
 294     c->mask = 0;
 295     c->reconnect_ok = 0;
 296     c->state = STATE_IDLE;
 297     c->addinfo = 0;
 298     c->diagset = 0;
 299     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 300     c->buf_in = 0;
 301     c->len_in = 0;
 302     c->buf_out = 0;
 303     c->len_out = 0;
 304     c->resultsets = 0;
 305
 306     c->options = ZOOM_options_create_with_parent(options);
 307
 308     c->host_port = 0;
 309     c->path = 0;
 310     c->proxy = 0;
 311
 312     c->charset = c->lang = 0;
 313
 314     c->cookie_out = 0;
 315     c->cookie_in = 0;
 316     c->client_IP = 0;
 317     c->tasks = 0;
 318
 319     c->odr_in = odr_createmem(ODR_DECODE);
 320     c->odr_out = odr_createmem(ODR_ENCODE);
 321
 322     c->async = 0;
 323     c->support_named_resultsets = 0;
 324     c->last_event = ZOOM_EVENT_NONE;
 325
 326     c->m_queue_front = 0;
 327     c->m_queue_back = 0;
 328     return c;
 329 }
 330
 331
 332 /* set database names. Take local databases (if set); otherwise
 333    take databases given in ZURL (if set); otherwise use Default */
 334 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 335                                 int *num)
 336 {
 337     char **databaseNames;
 338     const char *cp = ZOOM_options_get(options, "databaseName");
 339
 340     if ((!cp || !*cp) && con->host_port)
 341     {
 342         if (strncmp(con->host_port, "unix:", 5) == 0)
 343             cp = strchr(con->host_port+5, ':');
 344         else
 345             cp = strchr(con->host_port, '/');
 346         if (cp)
 347             cp++;
 348     }
 349     if (!cp)
 350         cp = "Default";
 351     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 352     return databaseNames;
 353 }
 354
 355 ZOOM_API(ZOOM_connection)
 356     ZOOM_connection_new(const char *host, int portnum)
 357 {
 358     ZOOM_connection c = ZOOM_connection_create(0);
 359
 360     ZOOM_connection_connect(c, host, portnum);
 361     return c;
 362 }
 363
 364 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 365 {
 366     if (!s || !*s)
 367         return zoom_sru_soap;
 368     if (!yaz_matchstr(s, "soap"))
 369         return zoom_sru_soap;
 370     else if (!yaz_matchstr(s, "get"))
 371         return zoom_sru_get;
 372     else if (!yaz_matchstr(s, "post"))
 373         return zoom_sru_post;
 374     return zoom_sru_error;
 375 }
 376
 377 ZOOM_API(void)
 378     ZOOM_connection_connect(ZOOM_connection c,
 379                             const char *host, int portnum)
 380 {
 381     const char *val;
 382     ZOOM_task task;
 383
 384     initlog();
 385
 386     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 387             c, host, portnum);
 388
 389     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 390     ZOOM_connection_remove_tasks(c);
 391
 392     if (c->cs)
 393     {
 394         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 395         c->reconnect_ok = 1;
 396         return;
 397     }
 398     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 399     xfree(c->proxy);
 400     val = ZOOM_options_get(c->options, "proxy");
 401     if (val && *val)
 402     {
 403         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 404         c->proxy = xstrdup(val);
 405     }
 406     else
 407         c->proxy = 0;
 408
 409     xfree(c->charset);
 410     val = ZOOM_options_get(c->options, "charset");
 411     if (val && *val)
 412     {
 413         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 414         c->charset = xstrdup(val);
 415     }
 416     else
 417         c->charset = 0;
 418
 419     xfree(c->lang);
 420     val = ZOOM_options_get(c->options, "lang");
 421     if (val && *val)
 422     {
 423         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 424         c->lang = xstrdup(val);
 425     }
 426     else
 427         c->lang = 0;
 428
 429     val = ZOOM_options_get(c->options, "sru");
 430     c->sru_mode = get_sru_mode_from_string(val);
 431
 432     xfree(c->host_port);
 433     if (portnum)
 434     {
 435         char hostn[128];
 436         sprintf(hostn, "%.80s:%d", host, portnum);
 437         c->host_port = xstrdup(hostn);
 438     }
 439     else
 440         c->host_port = xstrdup(host);
 441
 442     {
 443         /*
 444          * If the "<scheme>:" part of the host string is preceded by one
 445          * or more comma-separated <name>=<value> pairs, these are taken
 446          * to be options to be set on the connection object.  Among other
 447          * applications, this facility can be used to embed authentication
 448          * in a host string:
 449          *          user=admin,password=secret,tcp:localhost:9999
 450          */
 451         char *remainder = c->host_port;
 452         char *pcolon = strchr(remainder, ':');
 453         char *pcomma;
 454         char *pequals;
 455         while ((pcomma = strchr(remainder, ',')) != 0 &&
 456                (pcolon == 0 || pcomma < pcolon)) {
 457             *pcomma = '\0';
 458             if ((pequals = strchr(remainder, '=')) != 0) {
 459                 *pequals = '\0';
 460                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 461                 ZOOM_connection_option_set(c, remainder, pequals+1);
 462             }
 463             remainder = pcomma+1;
 464         }
 465
 466         if (remainder != c->host_port) {
 467             xfree(c->host_port);
 468             c->host_port = xstrdup(remainder);
 469             /*printf("# reset hp='%s'\n", remainder);*/
 470         }
 471     }
 472
 473     ZOOM_options_set(c->options, "host", c->host_port);
 474
 475     val = ZOOM_options_get(c->options, "cookie");
 476     if (val && *val)
 477     {
 478         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 479         c->cookie_out = xstrdup(val);
 480     }
 481
 482     val = ZOOM_options_get(c->options, "clientIP");
 483     if (val && *val)
 484     {
 485         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 486                 c, val);
 487         c->client_IP = xstrdup(val);
 488     }
 489
 490     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 491     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 492
 493     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 494
 495     if (!c->async)
 496     {
 497         while (ZOOM_event(1, &c))
 498             ;
 499     }
 500 }
 501
 502 ZOOM_API(ZOOM_query)
 503     ZOOM_query_create(void)
 504 {
 505     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 506
 507     yaz_log(log_details, "%p ZOOM_query_create", s);
 508     s->refcount = 1;
 509     s->z_query = 0;
 510     s->sort_spec = 0;
 511     s->odr = odr_createmem(ODR_ENCODE);
 512     s->query_string = 0;
 513
 514     return s;
 515 }
 516
 517 ZOOM_API(void)
 518     ZOOM_query_destroy(ZOOM_query s)
 519 {
 520     if (!s)
 521         return;
 522
 523     (s->refcount)--;
 524     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 525     if (s->refcount == 0)
 526     {
 527         odr_destroy(s->odr);
 528         xfree(s);
 529     }
 530 }
 531
 532 ZOOM_API(int)
 533     ZOOM_query_prefix(ZOOM_query s, const char *str)
 534 {
 535     s->query_string = odr_strdup(s->odr, str);
 536     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 537     s->z_query->which = Z_Query_type_1;
 538     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 539     if (!s->z_query->u.type_1)
 540     {
 541         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 542         s->z_query = 0;
 543         return -1;
 544     }
 545     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 546     return 0;
 547 }
 548
 549 ZOOM_API(int)
 550     ZOOM_query_cql(ZOOM_query s, const char *str)
 551 {
 552     Z_External *ext;
 553
 554     s->query_string = odr_strdup(s->odr, str);
 555
 556     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 557     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 558     ext->indirect_reference = 0;
 559     ext->descriptor = 0;
 560     ext->which = Z_External_CQL;
 561     ext->u.cql = s->query_string;
 562
 563     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 564     s->z_query->which = Z_Query_type_104;
 565     s->z_query->u.type_104 =  ext;
 566
 567     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 568
 569     return 0;
 570 }
 571
 572 /*
 573  * Translate the CQL string client-side into RPN which is passed to
 574  * the server.  This is useful for server's that don't themselves
 575  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 576  * only as a place to stash diagnostics if compilation fails; if this
 577  * information is not needed, a null pointer may be used.
 578  */
 579 ZOOM_API(int)
 580     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 581 {
 582     char *rpn;
 583     int ret;
 584     ZOOM_connection freeme = 0;
 585
 586     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 587     if (conn == 0)
 588         conn = freeme = ZOOM_connection_create(0);
 589
 590     rpn = cql2pqf(conn, str);
 591     if (freeme != 0)
 592         ZOOM_connection_destroy(freeme);
 593     if (rpn == 0)
 594         return -1;
 595
 596     ret = ZOOM_query_prefix(s, rpn);
 597     xfree(rpn);
 598     return ret;
 599 }
 600
 601 /*
 602  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 603  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 604  * to the server, as the YAZ GFS doesn't know how to handle this.
 605  */
 606 ZOOM_API(int)
 607     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 608                        int *ccl_error, const char **error_string,
 609                        int *error_pos)
 610 {
 611     int ret;
 612     struct ccl_rpn_node *rpn;
 613     CCL_bibset bibset = ccl_qual_mk();
 614
 615     if (config)
 616         ccl_qual_buf(bibset, config);
 617
 618     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 619     if (!rpn)
 620     {
 621         *error_string = ccl_err_msg(*ccl_error);
 622         ret = -1;
 623     }
 624     else
 625     {
 626         WRBUF wr = wrbuf_alloc();
 627         ccl_pquery(wr, rpn);
 628         ccl_rpn_delete(rpn);
 629         ret = ZOOM_query_prefix(s, wrbuf_buf(wr));
 630         wrbuf_free(wr, 1);
 631     }
 632     ccl_qual_rm(&bibset);
 633     return ret;
 634 }
 635
 636 ZOOM_API(int)
 637     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 638 {
 639     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 640     if (!s->sort_spec)
 641     {
 642         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 643                 s, criteria);
 644         return -1;
 645     }
 646     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 647     return 0;
 648 }
 649
 650 static zoom_ret do_write(ZOOM_connection c);
 651
 652 ZOOM_API(void)
 653     ZOOM_connection_destroy(ZOOM_connection c)
 654 {
 655     ZOOM_resultset r;
 656     if (!c)
 657         return;
 658     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 659     if (c->cs)
 660         cs_close(c->cs);
 661     for (r = c->resultsets; r; r = r->next)
 662         r->connection = 0;
 663
 664     xfree(c->buf_in);
 665     xfree(c->addinfo);
 666     xfree(c->diagset);
 667     odr_destroy(c->odr_in);
 668     odr_destroy(c->odr_out);
 669     ZOOM_options_destroy(c->options);
 670     ZOOM_connection_remove_tasks(c);
 671     xfree(c->host_port);
 672     xfree(c->path);
 673     xfree(c->proxy);
 674     xfree(c->charset);
 675     xfree(c->lang);
 676     xfree(c->cookie_out);
 677     xfree(c->cookie_in);
 678     xfree(c->client_IP);
 679     xfree(c);
 680 }
 681
 682 void ZOOM_resultset_addref(ZOOM_resultset r)
 683 {
 684     if (r)
 685     {
 686         (r->refcount)++;
 687         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 688                 r, r->refcount);
 689     }
 690 }
 691
 692 ZOOM_resultset ZOOM_resultset_create(void)
 693 {
 694     int i;
 695     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 696
 697     initlog();
 698
 699     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 700     r->refcount = 1;
 701     r->size = 0;
 702     r->odr = odr_createmem(ODR_ENCODE);
 703     r->piggyback = 1;
 704     r->setname = 0;
 705     r->schema = 0;
 706     r->step = 0;
 707     for (i = 0; i<RECORD_HASH_SIZE; i++)
 708         r->record_hash[i] = 0;
 709     r->r_sort_spec = 0;
 710     r->query = 0;
 711     r->connection = 0;
 712     r->next = 0;
 713     return r;
 714 }
 715
 716 ZOOM_API(ZOOM_resultset)
 717     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 718 {
 719     ZOOM_resultset r;
 720     ZOOM_query s = ZOOM_query_create();
 721
 722     ZOOM_query_prefix(s, q);
 723
 724     r = ZOOM_connection_search(c, s);
 725     ZOOM_query_destroy(s);
 726     return r;
 727 }
 728
 729 ZOOM_API(ZOOM_resultset)
 730     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 731 {
 732     ZOOM_resultset r = ZOOM_resultset_create();
 733     ZOOM_task task;
 734     const char *cp;
 735     int start, count;
 736     const char *syntax, *elementSetName;
 737
 738     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 739     r->r_sort_spec = q->sort_spec;
 740     r->query = q;
 741
 742     r->options = ZOOM_options_create_with_parent(c->options);
 743
 744     start = ZOOM_options_get_int(r->options, "start", 0);
 745     count = ZOOM_options_get_int(r->options, "count", 0);
 746     {
 747         /* If "presentChunk" is defined use that; otherwise "step" */
 748         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 749         r->step = ZOOM_options_get_int(r->options,
 750                                        (cp != 0 ? "presentChunk": "step"), 0);
 751     }
 752     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 753     cp = ZOOM_options_get(r->options, "setname");
 754     if (cp)
 755         r->setname = xstrdup(cp);
 756     cp = ZOOM_options_get(r->options, "schema");
 757     if (cp)
 758         r->schema = xstrdup(cp);
 759
 760     r->connection = c;
 761
 762     r->next = c->resultsets;
 763     c->resultsets = r;
 764
 765     if (c->host_port && c->proto == PROTO_HTTP)
 766     {
 767         if (!c->cs)
 768         {
 769             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 770             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 771         }
 772         else
 773         {
 774             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 775             c->reconnect_ok = 1;
 776         }
 777     }
 778
 779     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 780     task->u.search.resultset = r;
 781     task->u.search.start = start;
 782     task->u.search.count = count;
 783
 784     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 785     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 786     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 787     task->u.search.elementSetName = elementSetName
 788         ? xstrdup(elementSetName) : 0;
 789
 790     ZOOM_resultset_addref(r);
 791
 792     (q->refcount)++;
 793
 794     if (!c->async)
 795     {
 796         while (ZOOM_event(1, &c))
 797             ;
 798     }
 799     return r;
 800 }
 801
 802 /*
 803  * This is the old result-set sorting API, which is maintained only
 804  * for the sake of binary compatibility.  There is no reason ever to
 805  * use this rather than ZOOM_resultset_sort1().
 806  */
 807 ZOOM_API(void)
 808     ZOOM_resultset_sort(ZOOM_resultset r,
 809                         const char *sort_type, const char *sort_spec)
 810 {
 811     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 812 }
 813
 814 ZOOM_API(int)
 815     ZOOM_resultset_sort1(ZOOM_resultset r,
 816                          const char *sort_type, const char *sort_spec)
 817 {
 818     ZOOM_connection c = r->connection;
 819     ZOOM_task task;
 820     ZOOM_query newq;
 821
 822     newq = ZOOM_query_create();
 823     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 824         return -1;
 825
 826     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 827             r, r, sort_type, sort_spec);
 828     if (!c)
 829         return 0;
 830
 831     if (c->host_port && c->proto == PROTO_HTTP)
 832     {
 833         if (!c->cs)
 834         {
 835             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 836             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 837         }
 838         else
 839         {
 840             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 841                     r);
 842             c->reconnect_ok = 1;
 843         }
 844     }
 845
 846     ZOOM_resultset_cache_reset(r);
 847     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 848     task->u.sort.resultset = r;
 849     task->u.sort.q = newq;
 850
 851     ZOOM_resultset_addref(r);
 852
 853     if (!c->async)
 854     {
 855         while (ZOOM_event(1, &c))
 856             ;
 857     }
 858
 859     return 0;
 860 }
 861
 862 ZOOM_API(void)
 863     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 864 {
 865     int i;
 866     for (i = 0; i<RECORD_HASH_SIZE; i++)
 867     {
 868         ZOOM_record_cache rc;
 869         for (rc = r->record_hash[i]; rc; rc = rc->next)
 870         {
 871             if (rc->rec.wrbuf_marc)
 872                 wrbuf_free(rc->rec.wrbuf_marc, 1);
 873             if (rc->rec.wrbuf_iconv)
 874                 wrbuf_free(rc->rec.wrbuf_iconv, 1);
 875             if (rc->rec.wrbuf_opac)
 876                 wrbuf_free(rc->rec.wrbuf_opac, 1);
 877         }
 878         r->record_hash[i] = 0;
 879     }
 880 }
 881
 882 ZOOM_API(void)
 883     ZOOM_resultset_destroy(ZOOM_resultset r)
 884 {
 885     if (!r)
 886         return;
 887     (r->refcount)--;
 888     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 889             r, r, r->refcount);
 890     if (r->refcount == 0)
 891     {
 892         ZOOM_resultset_cache_reset(r);
 893
 894         if (r->connection)
 895         {
 896             /* remove ourselves from the resultsets in connection */
 897             ZOOM_resultset *rp = &r->connection->resultsets;
 898             while (1)
 899             {
 900                 assert(*rp);   /* we must be in this list!! */
 901                 if (*rp == r)
 902                 {   /* OK, we're here - take us out of it */
 903                     *rp = (*rp)->next;
 904                     break;
 905                 }
 906                 rp = &(*rp)->next;
 907             }
 908         }
 909         ZOOM_query_destroy(r->query);
 910         ZOOM_options_destroy(r->options);
 911         odr_destroy(r->odr);
 912         xfree(r->setname);
 913         xfree(r->schema);
 914         xfree(r);
 915     }
 916 }
 917
 918 ZOOM_API(size_t)
 919     ZOOM_resultset_size(ZOOM_resultset r)
 920 {
 921     return r->size;
 922 }
 923
 924 static void do_close(ZOOM_connection c)
 925 {
 926     if (c->cs)
 927         cs_close(c->cs);
 928     c->cs = 0;
 929     c->mask = 0;
 930     c->state = STATE_IDLE;
 931 }
 932
 933 static int ZOOM_test_reconnect(ZOOM_connection c)
 934 {
 935     if (!c->reconnect_ok)
 936         return 0;
 937     do_close(c);
 938     c->reconnect_ok = 0;
 939     c->tasks->running = 0;
 940     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
 941     return 1;
 942 }
 943
 944 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
 945                                     int force_sync, int start, int count)
 946 {
 947     ZOOM_task task;
 948     ZOOM_connection c;
 949     const char *cp;
 950     const char *syntax, *elementSetName;
 951
 952     if (!r)
 953         return;
 954     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 955             " count=%d", r, force_sync, start, count);
 956     c = r->connection;
 957     if (!c)
 958         return;
 959
 960     if (c->host_port && c->proto == PROTO_HTTP)
 961     {
 962         if (!c->cs)
 963         {
 964             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 965             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 966         }
 967         else
 968         {
 969             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 970                     "reconnect", r);
 971             c->reconnect_ok = 1;
 972         }
 973     }
 974     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
 975     task->u.retrieve.resultset = r;
 976     task->u.retrieve.start = start;
 977     task->u.retrieve.count = count;
 978
 979     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 980     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
 981     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 982     task->u.retrieve.elementSetName = elementSetName
 983         ? xstrdup(elementSetName) : 0;
 984
 985     cp = ZOOM_options_get(r->options, "schema");
 986     if (cp)
 987     {
 988         if (!r->schema || strcmp(r->schema, cp))
 989         {
 990             xfree(r->schema);
 991             r->schema = xstrdup(cp);
 992         }
 993     }
 994
 995     ZOOM_resultset_addref(r);
 996
 997     if (!r->connection->async || force_sync)
 998         while (r->connection && ZOOM_event(1, &r->connection))
 999             ;
1000 }
1001
1002 ZOOM_API(void)
1003     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1004                            size_t start, size_t count)
1005 {
1006     int force_present = 0;
1007
1008     if (!r)
1009         return ;
1010     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1011             r, r, (long) start, (long) count);
1012     if (count && recs)
1013         force_present = 1;
1014     ZOOM_resultset_retrieve(r, force_present, start, count);
1015     if (force_present)
1016     {
1017         size_t i;
1018         for (i = 0; i< count; i++)
1019             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1020     }
1021 }
1022
1023 static void get_cert(ZOOM_connection c)
1024 {
1025     char *cert_buf;
1026     int cert_len;
1027
1028     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1029     {
1030         ZOOM_connection_option_setl(c, "sslPeerCert",
1031                                     cert_buf, cert_len);
1032         xfree(cert_buf);
1033     }
1034 }
1035
1036 static zoom_ret do_connect(ZOOM_connection c)
1037 {
1038     void *add;
1039     const char *effective_host;
1040
1041     if (c->proxy)
1042         effective_host = c->proxy;
1043     else
1044         effective_host = c->host_port;
1045
1046     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1047
1048     if (c->cs)
1049         cs_close(c->cs);
1050     c->cs = cs_create_host(effective_host, 0, &add);
1051
1052     if (c->cs && c->cs->protocol == PROTO_HTTP)
1053     {
1054 #if YAZ_HAVE_XML2
1055         const char *path = 0;
1056
1057         c->proto = PROTO_HTTP;
1058         cs_get_host_args(c->host_port, &path);
1059         xfree(c->path);
1060         c->path = (char*) xmalloc(strlen(path)+2);
1061         c->path[0] = '/';
1062         strcpy(c->path+1, path);
1063 #else
1064         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1065         do_close(c);
1066         return zoom_complete;
1067 #endif
1068     }
1069     if (c->cs)
1070     {
1071         int ret = cs_connect(c->cs, add);
1072         if (ret == 0)
1073         {
1074             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1075             ZOOM_connection_put_event(c, event);
1076             get_cert(c);
1077             if (c->proto == PROTO_Z3950)
1078                 ZOOM_connection_send_init(c);
1079             else
1080             {
1081                 /* no init request for SRW .. */
1082                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1083                 ZOOM_connection_remove_task(c);
1084                 c->mask = 0;
1085                 ZOOM_connection_exec_task(c);
1086             }
1087             c->state = STATE_ESTABLISHED;
1088             return zoom_pending;
1089         }
1090         else if (ret > 0)
1091         {
1092             c->state = STATE_CONNECTING;
1093             c->mask = ZOOM_SELECT_EXCEPT;
1094             if (c->cs->io_pending & CS_WANT_WRITE)
1095                 c->mask += ZOOM_SELECT_WRITE;
1096             if (c->cs->io_pending & CS_WANT_READ)
1097                 c->mask += ZOOM_SELECT_READ;
1098             return zoom_pending;
1099         }
1100     }
1101     c->state = STATE_IDLE;
1102     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1103     return zoom_complete;
1104 }
1105
1106 int z3950_connection_socket(ZOOM_connection c)
1107 {
1108     if (c->cs)
1109         return cs_fileno(c->cs);
1110     return -1;
1111 }
1112
1113 int z3950_connection_mask(ZOOM_connection c)
1114 {
1115     if (c->cs)
1116         return c->mask;
1117     return 0;
1118 }
1119
1120 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1121 {
1122     int i;
1123     for (i = 0; i<200; i++)
1124     {
1125         size_t len;
1126         Z_OtherInformation **oi;
1127         char buf[80];
1128         const char *val;
1129         const char *cp;
1130         int oidval;
1131
1132         sprintf(buf, "otherInfo%d", i);
1133         val = ZOOM_options_get(c->options, buf);
1134         if (!val)
1135             break;
1136         cp = strchr(val, ':');
1137         if (!cp)
1138             continue;
1139         len = cp - val;
1140         if (len >= sizeof(buf))
1141             len = sizeof(buf)-1;
1142         memcpy(buf, val, len);
1143         buf[len] = '\0';
1144         oidval = oid_getvalbyname(buf);
1145         if (oidval == VAL_NONE)
1146             continue;
1147
1148         yaz_oi_APDU(a, &oi);
1149         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1150     }
1151 }
1152
1153 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1154 {
1155     assert(a);
1156     if (c->cookie_out)
1157     {
1158         Z_OtherInformation **oi;
1159         yaz_oi_APDU(a, &oi);
1160         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1161     }
1162     if (c->client_IP)
1163     {
1164         Z_OtherInformation **oi;
1165         yaz_oi_APDU(a, &oi);
1166         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1167     }
1168     otherInfo_attach(c, a, out);
1169     if (!z_APDU(out, &a, 0, 0))
1170     {
1171         FILE *outf = fopen("/tmp/apdu.txt", "a");
1172         if (a && outf)
1173         {
1174             ODR odr_pr = odr_createmem(ODR_PRINT);
1175             fprintf(outf, "a=%p\n", a);
1176             odr_setprint(odr_pr, outf);
1177             z_APDU(odr_pr, &a, 0, 0);
1178             odr_destroy(odr_pr);
1179         }
1180         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1181         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1182         odr_reset(out);
1183         return -1;
1184     }
1185     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1186     return 0;
1187 }
1188
1189 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1190 {
1191     ZOOM_Event event;
1192     assert(a);
1193     if (encode_APDU(c, a, c->odr_out))
1194         return zoom_complete;
1195     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1196     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1197     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1198     ZOOM_connection_put_event(c, event);
1199     odr_reset(c->odr_out);
1200     return do_write(c);
1201 }
1202
1203 /* returns 1 if PDU was sent OK (still pending )
1204    0 if PDU was not sent OK (nothing to wait for)
1205 */
1206
1207 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1208 {
1209     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1210     Z_InitRequest *ireq = apdu->u.initRequest;
1211     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1212         odr_malloc(c->odr_out, sizeof(*auth));
1213     const char *auth_groupId = ZOOM_options_get(c->options, "group");
1214     const char *auth_userId = ZOOM_options_get(c->options, "user");
1215     const char *auth_password = ZOOM_options_get(c->options, "password");
1216     char *version;
1217
1218     /* support the pass for backwards compatibility */
1219     if (!auth_password)
1220         auth_password = ZOOM_options_get(c->options, "pass");
1221
1222     ODR_MASK_SET(ireq->options, Z_Options_search);
1223     ODR_MASK_SET(ireq->options, Z_Options_present);
1224     ODR_MASK_SET(ireq->options, Z_Options_scan);
1225     ODR_MASK_SET(ireq->options, Z_Options_sort);
1226     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1227     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1228
1229     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1230     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1231     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1232
1233     /* Index Data's Z39.50 Implementor Id is 81 */
1234     ireq->implementationId =
1235         odr_prepend(c->odr_out,
1236                     ZOOM_options_get(c->options, "implementationId"),
1237                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1238
1239     ireq->implementationName =
1240         odr_prepend(c->odr_out,
1241                     ZOOM_options_get(c->options, "implementationName"),
1242                     odr_prepend(c->odr_out, "ZOOM-C",
1243                                 ireq->implementationName));
1244
1245     version = odr_strdup(c->odr_out, "$Revision: 1.94 $");
1246     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1247         version[strlen(version)-2] = '\0';
1248     ireq->implementationVersion =
1249         odr_prepend(c->odr_out,
1250                     ZOOM_options_get(c->options, "implementationVersion"),
1251                     odr_prepend(c->odr_out, &version[11],
1252                                 ireq->implementationVersion));
1253
1254     *ireq->maximumRecordSize =
1255         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
1256     *ireq->preferredMessageSize =
1257         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
1258
1259     if (auth_groupId || auth_password)
1260     {
1261         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1262         int i = 0;
1263         pass->groupId = 0;
1264         if (auth_groupId && *auth_groupId)
1265         {
1266             pass->groupId = (char *)
1267                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1268             strcpy(pass->groupId, auth_groupId);
1269             i++;
1270         }
1271         pass->userId = 0;
1272         if (auth_userId && *auth_userId)
1273         {
1274             pass->userId = (char *)
1275                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1276             strcpy(pass->userId, auth_userId);
1277             i++;
1278         }
1279         pass->password = 0;
1280         if (auth_password && *auth_password)
1281         {
1282             pass->password = (char *)
1283                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1284             strcpy(pass->password, auth_password);
1285             i++;
1286         }
1287         if (i)
1288         {
1289             auth->which = Z_IdAuthentication_idPass;
1290             auth->u.idPass = pass;
1291             ireq->idAuthentication = auth;
1292         }
1293     }
1294     else if (auth_userId)
1295     {
1296         auth->which = Z_IdAuthentication_open;
1297         auth->u.open = (char *)
1298             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1299         strcpy(auth->u.open, auth_userId);
1300         ireq->idAuthentication = auth;
1301     }
1302     if (c->proxy)
1303         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1304                                  VAL_PROXY, 1, c->host_port);
1305     if (c->charset || c->lang)
1306     {
1307         Z_OtherInformation **oi;
1308         Z_OtherInformationUnit *oi_unit;
1309
1310         yaz_oi_APDU(apdu, &oi);
1311
1312         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1313         {
1314             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1315             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1316             oi_unit->information.externallyDefinedInfo =
1317                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1318                                               c->charset, c->lang, 1);
1319         }
1320     }
1321     assert(apdu);
1322     return send_APDU(c, apdu);
1323 }
1324
1325 #if YAZ_HAVE_XML2
1326 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1327 {
1328     Z_GDU *gdu;
1329     ZOOM_Event event;
1330
1331     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1332
1333     if (c->sru_mode == zoom_sru_get)
1334     {
1335         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1336     }
1337     else if (c->sru_mode == zoom_sru_post)
1338     {
1339         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1340     }
1341     else if (c->sru_mode == zoom_sru_soap)
1342     {
1343         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1344     }
1345     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1346         return zoom_complete;
1347     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1348
1349     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1350     ZOOM_connection_put_event(c, event);
1351     odr_reset(c->odr_out);
1352     return do_write(c);
1353 }
1354 #endif
1355
1356 #if YAZ_HAVE_XML2
1357 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1358 {
1359     int i;
1360     int *start, *count;
1361     ZOOM_resultset resultset = 0;
1362     Z_SRW_PDU *sr = 0;
1363     const char *option_val = 0;
1364
1365     if (c->error)                  /* don't continue on error */
1366         return zoom_complete;
1367     assert(c->tasks);
1368     switch(c->tasks->which)
1369     {
1370     case ZOOM_TASK_SEARCH:
1371         resultset = c->tasks->u.search.resultset;
1372         resultset->setname = xstrdup("default");
1373         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1374         start = &c->tasks->u.search.start;
1375         count = &c->tasks->u.search.count;
1376         break;
1377     case ZOOM_TASK_RETRIEVE:
1378         resultset = c->tasks->u.retrieve.resultset;
1379
1380         start = &c->tasks->u.retrieve.start;
1381         count = &c->tasks->u.retrieve.count;
1382
1383         if (*start >= resultset->size)
1384             return zoom_complete;
1385         if (*start + *count > resultset->size)
1386             *count = resultset->size - *start;
1387
1388         for (i = 0; i < *count; i++)
1389         {
1390             ZOOM_record rec =
1391                 record_cache_lookup(resultset, i + *start,
1392                                     c->tasks->u.retrieve.syntax,
1393                                     c->tasks->u.retrieve.elementSetName);
1394             if (!rec)
1395                 break;
1396             else
1397             {
1398                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1399                 ZOOM_connection_put_event(c, event);
1400             }
1401         }
1402         *start += i;
1403         *count -= i;
1404
1405         if (*count == 0)
1406             return zoom_complete;
1407         break;
1408     default:
1409         return zoom_complete;
1410     }
1411     assert(resultset->query);
1412
1413     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1414
1415     if (resultset->query->z_query->which == Z_Query_type_104
1416         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1417     {
1418         sr->u.request->query_type = Z_SRW_query_type_cql;
1419         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1420     }
1421     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1422              resultset->query->z_query->u.type_1)
1423     {
1424         sr->u.request->query_type = Z_SRW_query_type_pqf;
1425         sr->u.request->query.pqf = resultset->query->query_string;
1426     }
1427     else
1428     {
1429         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1430         return zoom_complete;
1431     }
1432     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1433     sr->u.request->maximumRecords = odr_intdup(
1434         c->odr_out, resultset->step>0 ? resultset->step : *count);
1435     sr->u.request->recordSchema = resultset->schema;
1436
1437     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1438     if (option_val)
1439         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1440
1441     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1442     if (option_val)
1443         sr->extra_args = odr_strdup(c->odr_out, option_val);
1444     return send_srw(c, sr);
1445 }
1446 #else
1447 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1448 {
1449     return zoom_complete;
1450 }
1451 #endif
1452
1453 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1454 {
1455     ZOOM_resultset r;
1456     int lslb, ssub, mspn;
1457     const char *syntax;
1458     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1459     Z_SearchRequest *search_req = apdu->u.searchRequest;
1460     const char *elementSetName;
1461     const char *smallSetElementSetName;
1462     const char *mediumSetElementSetName;
1463
1464     assert(c->tasks);
1465     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1466
1467     r = c->tasks->u.search.resultset;
1468
1469     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1470
1471     elementSetName =
1472         ZOOM_options_get(r->options, "elementSetName");
1473     smallSetElementSetName  =
1474         ZOOM_options_get(r->options, "smallSetElementSetName");
1475     mediumSetElementSetName =
1476         ZOOM_options_get(r->options, "mediumSetElementSetName");
1477
1478     if (!smallSetElementSetName)
1479         smallSetElementSetName = elementSetName;
1480
1481     if (!mediumSetElementSetName)
1482         mediumSetElementSetName = elementSetName;
1483
1484     assert(r);
1485     assert(r->query);
1486
1487     /* prepare query for the search request */
1488     search_req->query = r->query->z_query;
1489     if (!search_req->query)
1490     {
1491         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1492         return zoom_complete;
1493     }
1494
1495     search_req->databaseNames =
1496         set_DatabaseNames(c, r->options, &search_req->num_databaseNames);
1497
1498     /* get syntax (no need to provide unless piggyback is in effect) */
1499     syntax = c->tasks->u.search.syntax;
1500
1501     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1502     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1503     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1504     if (lslb != -1 && ssub != -1 && mspn != -1)
1505     {
1506         /* So're a Z39.50 expert? Let's hope you don't do sort */
1507         *search_req->largeSetLowerBound = lslb;
1508         *search_req->smallSetUpperBound = ssub;
1509         *search_req->mediumSetPresentNumber = mspn;
1510     }
1511     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1512              && r->piggyback && !r->r_sort_spec && !r->schema)
1513     {
1514         /* Regular piggyback - do it unless we're going to do sort */
1515         *search_req->largeSetLowerBound = 2000000000;
1516         *search_req->smallSetUpperBound = 1;
1517         *search_req->mediumSetPresentNumber =
1518             r->step>0 ? r->step : c->tasks->u.search.count;
1519     }
1520     else
1521     {
1522         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1523         smallSetElementSetName = 0;
1524         mediumSetElementSetName = 0;
1525         syntax = 0;
1526     }
1527     if (smallSetElementSetName && *smallSetElementSetName)
1528     {
1529         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1530             odr_malloc(c->odr_out, sizeof(*esn));
1531
1532         esn->which = Z_ElementSetNames_generic;
1533         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1534         search_req->smallSetElementSetNames = esn;
1535     }
1536     if (mediumSetElementSetName && *mediumSetElementSetName)
1537     {
1538         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1539             odr_malloc(c->odr_out, sizeof(*esn));
1540
1541         esn->which = Z_ElementSetNames_generic;
1542         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1543         search_req->mediumSetElementSetNames = esn;
1544     }
1545     if (syntax)
1546         search_req->preferredRecordSyntax =
1547             yaz_str_to_z3950oid(c->odr_out, CLASS_RECSYN, syntax);
1548
1549     if (!r->setname)
1550     {
1551         if (c->support_named_resultsets)
1552         {
1553             char setname[14];
1554             int ord;
1555             /* find the lowest unused ordinal so that we re-use
1556                result sets on the server. */
1557             for (ord = 1; ; ord++)
1558             {
1559                 ZOOM_resultset rp;
1560                 sprintf(setname, "%d", ord);
1561                 for (rp = c->resultsets; rp; rp = rp->next)
1562                     if (rp->setname && !strcmp(rp->setname, setname))
1563                         break;
1564                 if (!rp)
1565                     break;
1566             }
1567             r->setname = xstrdup(setname);
1568             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1569                     "set %s", c, r->setname);
1570         }
1571         else
1572         {
1573             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1574                     "default set", c);
1575             r->setname = xstrdup("default");
1576         }
1577         ZOOM_options_set(r->options, "setname", r->setname);
1578     }
1579     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1580     return send_APDU(c, apdu);
1581 }
1582
1583 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1584 {
1585     int oclass;
1586     char *addinfo = 0;
1587
1588     switch (r->which)
1589     {
1590     case Z_DefaultDiagFormat_v2Addinfo:
1591         addinfo = r->u.v2Addinfo;
1592         break;
1593     case Z_DefaultDiagFormat_v3Addinfo:
1594         addinfo = r->u.v3Addinfo;
1595         break;
1596     }
1597     xfree(c->addinfo);
1598     c->addinfo = 0;
1599     set_dset_error(c, *r->condition,
1600                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1601                    addinfo, 0);
1602 }
1603
1604 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1605 {
1606     if (p->which != Z_DiagRec_defaultFormat)
1607         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1608     else
1609         response_default_diag(c, p->u.defaultFormat);
1610 }
1611
1612 ZOOM_API(ZOOM_record)
1613     ZOOM_record_clone(ZOOM_record srec)
1614 {
1615     char *buf;
1616     int size;
1617     ODR odr_enc;
1618     ZOOM_record nrec;
1619
1620     odr_enc = odr_createmem(ODR_ENCODE);
1621     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1622         return 0;
1623     buf = odr_getbuf(odr_enc, &size, 0);
1624
1625     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1626     nrec->odr = odr_createmem(ODR_DECODE);
1627     nrec->wrbuf_marc = 0;
1628     nrec->wrbuf_iconv = 0;
1629     nrec->wrbuf_opac = 0;
1630     odr_setbuf(nrec->odr, buf, size, 0);
1631     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1632
1633     odr_destroy(odr_enc);
1634     return nrec;
1635 }
1636
1637 ZOOM_API(ZOOM_record)
1638     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1639 {
1640     const char *syntax =
1641         ZOOM_options_get(s->options, "preferredRecordSyntax");
1642     const char *elementSetName =
1643         ZOOM_options_get(s->options, "elementSetName");
1644
1645     return record_cache_lookup(s, pos, syntax, elementSetName);
1646 }
1647
1648 ZOOM_API(ZOOM_record)
1649     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1650 {
1651     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1652
1653     if (!rec)
1654     {
1655         /*
1656          * MIKE: I think force_sync should always be zero, but I don't
1657          * want to make this change until I get the go-ahead from
1658          * Adam, in case something depends on the old synchronous
1659          * behaviour.
1660          */
1661         int force_sync = 1;
1662         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1663         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1664         rec = ZOOM_resultset_record_immediate(r, pos);
1665     }
1666     return rec;
1667 }
1668
1669 ZOOM_API(void)
1670     ZOOM_record_destroy(ZOOM_record rec)
1671 {
1672     if (!rec)
1673         return;
1674     if (rec->wrbuf_marc)
1675         wrbuf_free(rec->wrbuf_marc, 1);
1676     if (rec->wrbuf_iconv)
1677         wrbuf_free(rec->wrbuf_iconv, 1);
1678     if (rec->wrbuf_opac)
1679         wrbuf_free(rec->wrbuf_opac, 1);
1680     odr_destroy(rec->odr);
1681     xfree(rec);
1682 }
1683
1684 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1685                                      int *len,
1686                                      const char *buf, int sz,
1687                                      const char *record_charset)
1688 {
1689     char to[40];
1690     char from[40];
1691     yaz_iconv_t cd = 0;
1692     yaz_marc_t mt = yaz_marc_create();
1693
1694     *from = '\0';
1695     strcpy(to, "UTF-8");
1696     if (record_charset && *record_charset)
1697     {
1698         /* Use "from,to" or just "from" */
1699         const char *cp = strchr(record_charset, ',');
1700         int clen = strlen(record_charset);
1701         if (cp && cp[1])
1702         {
1703             strncpy( to, cp+1, sizeof(to)-1);
1704             to[sizeof(to)-1] = '\0';
1705             clen = cp - record_charset;
1706         }
1707         if (clen > sizeof(from)-1)
1708             clen = sizeof(from)-1;
1709
1710         if (clen)
1711             strncpy(from, record_charset, clen);
1712         from[clen] = '\0';
1713     }
1714
1715     if (*from && *to)
1716     {
1717         cd = yaz_iconv_open(to, from);
1718         yaz_marc_iconv(mt, cd);
1719     }
1720
1721     yaz_marc_xml(mt, marc_type);
1722     if (!rec->wrbuf_marc)
1723         rec->wrbuf_marc = wrbuf_alloc();
1724     wrbuf_rewind(rec->wrbuf_marc);
1725     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1726     {
1727         yaz_marc_destroy(mt);
1728         if (cd)
1729             yaz_iconv_close(cd);
1730         if (len)
1731             *len = wrbuf_len(rec->wrbuf_marc);
1732         return wrbuf_buf(rec->wrbuf_marc);
1733     }
1734     yaz_marc_destroy(mt);
1735     if (cd)
1736         yaz_iconv_close(cd);
1737     return 0;
1738 }
1739
1740 static const char *record_iconv_return(ZOOM_record rec, int *len,
1741                                        const char *buf, int sz,
1742                                        const char *record_charset)
1743 {
1744     char to[40];
1745     char from[40];
1746     yaz_iconv_t cd = 0;
1747
1748     *from = '\0';
1749     strcpy(to, "UTF-8");
1750     if (record_charset && *record_charset)
1751     {
1752         /* Use "from,to" or just "from" */
1753         const char *cp = strchr(record_charset, ',');
1754         int clen = strlen(record_charset);
1755         if (cp && cp[1])
1756         {
1757             strncpy( to, cp+1, sizeof(to)-1);
1758             to[sizeof(to)-1] = '\0';
1759             clen = cp - record_charset;
1760         }
1761         if (clen > sizeof(from)-1)
1762             clen = sizeof(from)-1;
1763
1764         if (clen)
1765             strncpy(from, record_charset, clen);
1766         from[clen] = '\0';
1767     }
1768
1769     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1770     {
1771         char outbuf[12];
1772         size_t inbytesleft = sz;
1773         const char *inp = buf;
1774
1775         if (!rec->wrbuf_iconv)
1776             rec->wrbuf_iconv = wrbuf_alloc();
1777
1778         wrbuf_rewind(rec->wrbuf_iconv);
1779
1780         while (inbytesleft)
1781         {
1782             size_t outbytesleft = sizeof(outbuf);
1783             char *outp = outbuf;
1784             size_t r = yaz_iconv(cd, (char**) &inp,
1785                                  &inbytesleft,
1786                                  &outp, &outbytesleft);
1787             if (r == (size_t) (-1))
1788             {
1789                 int e = yaz_iconv_error(cd);
1790                 if (e != YAZ_ICONV_E2BIG)
1791                     break;
1792             }
1793             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1794         }
1795         wrbuf_puts(rec->wrbuf_iconv, "");
1796         buf = wrbuf_buf(rec->wrbuf_iconv);
1797         sz = wrbuf_len(rec->wrbuf_iconv);
1798         yaz_iconv_close(cd);
1799     }
1800     if (len)
1801         *len = sz;
1802     return buf;
1803 }
1804
1805 ZOOM_API(int)
1806     ZOOM_record_error(ZOOM_record rec, const char **cp,
1807                       const char **addinfo, const char **diagset)
1808 {
1809     Z_NamePlusRecord *npr;
1810
1811     if (!rec)
1812         return 0;
1813     npr = rec->npr;
1814     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1815     {
1816         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1817         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1818         const char *add = 0;
1819
1820         if (diag_rec->which == Z_DiagRec_defaultFormat)
1821         {
1822             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1823             int oclass;
1824
1825             error = *ddf->condition;
1826             switch (ddf->which)
1827             {
1828             case Z_DefaultDiagFormat_v2Addinfo:
1829                 add = ddf->u.v2Addinfo;
1830                 break;
1831             case Z_DefaultDiagFormat_v3Addinfo:
1832                 add = ddf->u.v3Addinfo;
1833                 break;
1834             }
1835             if (diagset)
1836                 *diagset = yaz_z3950oid_to_str(ddf->diagnosticSetId, &oclass);
1837         }
1838         else
1839         {
1840             if (diagset)
1841                 *diagset = "Bib-1";
1842         }
1843         if (addinfo)
1844             *addinfo = add ? add : "";
1845         if (cp)
1846             *cp = diagbib1_str(error);
1847         return error;
1848     }
1849     return 0;
1850 }
1851
1852 ZOOM_API(const char *)
1853     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1854 {
1855     char type[40];
1856     char charset[40];
1857     char xpath[512];
1858     const char *cp;
1859     int i;
1860     Z_NamePlusRecord *npr;
1861
1862     if (len)
1863         *len = 0; /* default return */
1864
1865     if (!rec)
1866         return 0;
1867     npr = rec->npr;
1868     if (!npr)
1869         return 0;
1870
1871     cp = type_spec;
1872     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1873     {
1874         if (cp[i] == ';' || cp[i] == ' ')
1875             break;
1876         type[i] = cp[i];
1877     }
1878     type[i] = '\0';
1879     charset[0] = '\0';
1880     while (type_spec[i] == ';')
1881     {
1882         i++;
1883         while (type_spec[i] == ' ')
1884             i++;
1885         if (!strncmp(type_spec+i, "charset=", 8))
1886         {
1887             int j = 0;
1888             i = i + 8; /* skip charset= */
1889             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1890             {
1891                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1892                     break;
1893                 charset[j] = cp[i];
1894             }
1895             charset[j] = '\0';
1896         }
1897         else if (!strncmp(type_spec+i, "xpath=", 6))
1898         {
1899             int j = 0;
1900             i = i + 6;
1901             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1902                 xpath[j] = cp[i];
1903             xpath[j] = '\0';
1904         }
1905         while (type_spec[i] == ' ')
1906             i++;
1907     }
1908     if (!strcmp(type, "database"))
1909     {
1910         if (len)
1911             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1912         return npr->databaseName;
1913     }
1914     else if (!strcmp(type, "syntax"))
1915     {
1916         const char *desc = 0;
1917         if (npr->which == Z_NamePlusRecord_databaseRecord)
1918         {
1919             Z_External *r = (Z_External *) npr->u.databaseRecord;
1920             oident *ent = oid_getentbyoid(r->direct_reference);
1921             if (ent)
1922                 desc = ent->desc;
1923         }
1924         if (!desc)
1925             desc = "none";
1926         if (len)
1927             *len = strlen(desc);
1928         return desc;
1929     }
1930     if (npr->which != Z_NamePlusRecord_databaseRecord)
1931         return 0;
1932
1933     /* from now on - we have a database record .. */
1934     if (!strcmp(type, "render"))
1935     {
1936         Z_External *r = (Z_External *) npr->u.databaseRecord;
1937         oident *ent = oid_getentbyoid(r->direct_reference);
1938
1939         /* render bibliographic record .. */
1940         if (r->which == Z_External_OPAC)
1941         {
1942             r = r->u.opac->bibliographicRecord;
1943             if (!r)
1944                 return 0;
1945             ent = oid_getentbyoid(r->direct_reference);
1946         }
1947         if (r->which == Z_External_sutrs)
1948             return record_iconv_return(rec, len,
1949                                        (char*) r->u.sutrs->buf,
1950                                        r->u.sutrs->len,
1951                                        charset);
1952         else if (r->which == Z_External_octet)
1953         {
1954             const char *ret_buf;
1955             switch (ent->value)
1956             {
1957             case VAL_SOIF:
1958             case VAL_HTML:
1959             case VAL_SUTRS:
1960                 break;
1961             case VAL_TEXT_XML:
1962             case VAL_APPLICATION_XML:
1963                 break;
1964             default:
1965                 ret_buf = marc_iconv_return(
1966                     rec, YAZ_MARC_LINE, len,
1967                     (const char *) r->u.octet_aligned->buf,
1968                     r->u.octet_aligned->len,
1969                     charset);
1970                 if (ret_buf)
1971                     return ret_buf;
1972             }
1973             return record_iconv_return(rec, len,
1974                                        (const char *) r->u.octet_aligned->buf,
1975                                        r->u.octet_aligned->len,
1976                                        charset);
1977         }
1978         else if (r->which == Z_External_grs1)
1979         {
1980             if (!rec->wrbuf_marc)
1981                 rec->wrbuf_marc = wrbuf_alloc();
1982             wrbuf_rewind(rec->wrbuf_marc);
1983             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1984             return record_iconv_return(rec, len,
1985                                        wrbuf_buf(rec->wrbuf_marc),
1986                                        wrbuf_len(rec->wrbuf_marc),
1987                                        charset);
1988         }
1989         return 0;
1990     }
1991     else if (!strcmp(type, "xml"))
1992     {
1993         Z_External *r = (Z_External *) npr->u.databaseRecord;
1994         oident *ent = oid_getentbyoid(r->direct_reference);
1995
1996         /* render bibliographic record .. */
1997         if (r->which == Z_External_OPAC)
1998         {
1999             r = r->u.opac->bibliographicRecord;
2000             if (!r)
2001                 return 0;
2002             ent = oid_getentbyoid(r->direct_reference);
2003         }
2004
2005         if (r->which == Z_External_sutrs)
2006             return record_iconv_return(rec, len,
2007                                        (const char *) r->u.sutrs->buf,
2008                                        r->u.sutrs->len,
2009                                        charset);
2010         else if (r->which == Z_External_octet)
2011         {
2012             const char *ret_buf;
2013             int marc_decode_type = YAZ_MARC_MARCXML;
2014
2015             switch (ent->value)
2016             {
2017             case VAL_SOIF:
2018             case VAL_HTML:
2019             case VAL_SUTRS:
2020                 break;
2021             case VAL_TEXT_XML:
2022             case VAL_APPLICATION_XML:
2023                 break;
2024             default:
2025                 ret_buf = marc_iconv_return(
2026                     rec, marc_decode_type, len,
2027                     (const char *) r->u.octet_aligned->buf,
2028                     r->u.octet_aligned->len,
2029                     charset);
2030                 if (ret_buf)
2031                     return ret_buf;
2032             }
2033             return record_iconv_return(rec, len,
2034                                        (const char *) r->u.octet_aligned->buf,
2035                                        r->u.octet_aligned->len,
2036                                        charset);
2037         }
2038         else if (r->which == Z_External_grs1)
2039         {
2040             if (len) *len = 5;
2041             return "GRS-1";
2042         }
2043         return 0;
2044     }
2045     else if (!strcmp(type, "raw"))
2046     {
2047         Z_External *r = (Z_External *) npr->u.databaseRecord;
2048
2049         if (r->which == Z_External_sutrs)
2050         {
2051             if (len) *len = r->u.sutrs->len;
2052             return (const char *) r->u.sutrs->buf;
2053         }
2054         else if (r->which == Z_External_octet)
2055         {
2056             if (len) *len = r->u.octet_aligned->len;
2057             return (const char *) r->u.octet_aligned->buf;
2058         }
2059         else /* grs-1, explain, OPAC, ... */
2060         {
2061             if (len) *len = -1;
2062             return (const char *) npr->u.databaseRecord;
2063         }
2064         return 0;
2065     }
2066     else if (!strcmp (type, "ext"))
2067     {
2068         if (len) *len = -1;
2069         return (const char *) npr->u.databaseRecord;
2070     }
2071     else if (!strcmp (type, "opac"))
2072
2073     {
2074         Z_External *r = (Z_External *) npr->u.databaseRecord;
2075         if (r->which == Z_External_OPAC)
2076         {
2077             if (!rec->wrbuf_opac)
2078                 rec->wrbuf_opac = wrbuf_alloc();
2079             wrbuf_rewind(rec->wrbuf_opac);
2080             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2081             return record_iconv_return(rec, len,
2082                                        wrbuf_buf(rec->wrbuf_opac),
2083                                        wrbuf_len(rec->wrbuf_opac),
2084                                        charset);
2085         }
2086     }
2087     return 0;
2088 }
2089
2090 static int strcmp_null(const char *v1, const char *v2)
2091 {
2092     if (!v1 && !v2)
2093         return 0;
2094     if (!v1 || !v2)
2095         return -1;
2096     return strcmp(v1, v2);
2097 }
2098
2099 static size_t record_hash(int pos)
2100 {
2101     if (pos < 0)
2102         pos = 0;
2103     return pos % RECORD_HASH_SIZE;
2104 }
2105
2106 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2107                              int pos,
2108                              const char *syntax, const char *elementSetName)
2109 {
2110     ZOOM_record_cache rc;
2111
2112     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2113     ZOOM_connection_put_event(r->connection, event);
2114
2115     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2116     {
2117         if (pos == rc->pos)
2118         {
2119             if (strcmp_null(r->schema, rc->schema))
2120                 continue;
2121             if (strcmp_null(elementSetName,rc->elementSetName))
2122                 continue;
2123             if (strcmp_null(syntax, rc->syntax))
2124                 continue;
2125             /* not destroying rc->npr (it's handled by nmem )*/
2126             rc->rec.npr = npr;
2127             /* keeping wrbuf_marc too */
2128             return;
2129         }
2130     }
2131     rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2132     rc->rec.npr = npr;
2133     rc->rec.odr = 0;
2134     rc->rec.wrbuf_marc = 0;
2135     rc->rec.wrbuf_iconv = 0;
2136     rc->rec.wrbuf_opac = 0;
2137     if (elementSetName)
2138         rc->elementSetName = odr_strdup(r->odr, elementSetName);
2139     else
2140         rc->elementSetName = 0;
2141
2142     if (syntax)
2143         rc->syntax = odr_strdup(r->odr, syntax);
2144     else
2145         rc->syntax = 0;
2146
2147     if (r->schema)
2148         rc->schema = odr_strdup(r->odr, r->schema);
2149     else
2150         rc->schema = 0;
2151
2152     rc->pos = pos;
2153     rc->next = r->record_hash[record_hash(pos)];
2154     r->record_hash[record_hash(pos)] = rc;
2155 }
2156
2157 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2158                                        const char *syntax,
2159                                        const char *elementSetName)
2160 {
2161     ZOOM_record_cache rc;
2162
2163     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2164     {
2165         if (pos == rc->pos)
2166         {
2167             if (strcmp_null(r->schema, rc->schema))
2168                 continue;
2169             if (strcmp_null(elementSetName,rc->elementSetName))
2170                 continue;
2171             if (strcmp_null(syntax, rc->syntax))
2172                 continue;
2173             return &rc->rec;
2174         }
2175     }
2176     return 0;
2177 }
2178
2179 static void handle_records(ZOOM_connection c, Z_Records *sr,
2180                            int present_phase)
2181 {
2182     ZOOM_resultset resultset;
2183     int *start, *count;
2184     const char *syntax = 0, *elementSetName = 0;
2185
2186     if (!c->tasks)
2187         return ;
2188     switch (c->tasks->which)
2189     {
2190     case ZOOM_TASK_SEARCH:
2191         resultset = c->tasks->u.search.resultset;
2192         start = &c->tasks->u.search.start;
2193         count = &c->tasks->u.search.count;
2194         syntax = c->tasks->u.search.syntax;
2195         elementSetName = c->tasks->u.search.elementSetName;
2196         break;
2197     case ZOOM_TASK_RETRIEVE:
2198         resultset = c->tasks->u.retrieve.resultset;
2199         start = &c->tasks->u.retrieve.start;
2200         count = &c->tasks->u.retrieve.count;
2201         syntax = c->tasks->u.retrieve.syntax;
2202         elementSetName = c->tasks->u.retrieve.elementSetName;
2203         break;
2204     default:
2205         return;
2206     }
2207     if (sr && sr->which == Z_Records_NSD)
2208         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2209     else if (sr && sr->which == Z_Records_multipleNSD)
2210     {
2211         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2212             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2213         else
2214             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2215     }
2216     else
2217     {
2218         if (*count + *start > resultset->size)
2219             *count = resultset->size - *start;
2220         if (*count < 0)
2221             *count = 0;
2222         if (sr && sr->which == Z_Records_DBOSD)
2223         {
2224             int i;
2225             NMEM nmem = odr_extract_mem(c->odr_in);
2226             Z_NamePlusRecordList *p =
2227                 sr->u.databaseOrSurDiagnostics;
2228             for (i = 0; i<p->num_records; i++)
2229             {
2230                 record_cache_add(resultset, p->records[i], i + *start,
2231                                  syntax, elementSetName);
2232             }
2233             *count -= i;
2234             *start += i;
2235             yaz_log(log_details,
2236                     "handle_records resultset=%p start=%d count=%d",
2237                     resultset, *start, *count);
2238
2239             /* transfer our response to search_nmem .. we need it later */
2240             nmem_transfer(resultset->odr->mem, nmem);
2241             nmem_destroy(nmem);
2242             if (present_phase && p->num_records == 0)
2243             {
2244                 /* present response and we didn't get any records! */
2245                 Z_NamePlusRecord *myrec =
2246                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2247                 record_cache_add(resultset, myrec, *start,
2248                                  syntax, elementSetName);
2249             }
2250         }
2251         else if (present_phase)
2252         {
2253             /* present response and we didn't get any records! */
2254             Z_NamePlusRecord *myrec =
2255                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2256             record_cache_add(resultset, myrec, *start, syntax, elementSetName);
2257         }
2258     }
2259 }
2260
2261 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2262 {
2263     handle_records(c, pr->records, 1);
2264 }
2265
2266 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2267                                        Z_Term *term)
2268 {
2269     switch (term->which)
2270     {
2271     case Z_Term_general:
2272         ZOOM_options_setl(opt, name,
2273                           (const char *)(term->u.general->buf),
2274                           term->u.general->len);
2275         break;
2276     case Z_Term_characterString:
2277         ZOOM_options_set(opt, name, term->u.characterString);
2278         break;
2279     case Z_Term_numeric:
2280         ZOOM_options_set_int(opt, name, *term->u.numeric);
2281         break;
2282     }
2283 }
2284
2285 static void handle_queryExpression(ZOOM_options opt, const char *name,
2286                                    Z_QueryExpression *exp)
2287 {
2288     char opt_name[80];
2289
2290     switch (exp->which)
2291     {
2292     case Z_QueryExpression_term:
2293         if (exp->u.term && exp->u.term->queryTerm)
2294         {
2295             sprintf(opt_name, "%s.term", name);
2296             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2297         }
2298         break;
2299     case Z_QueryExpression_query:
2300         break;
2301     }
2302 }
2303
2304 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2305                                 Z_OtherInformation *o)
2306 {
2307     int i;
2308     for (i = 0; o && i < o->num_elements; i++)
2309     {
2310         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2311         {
2312             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2313
2314             if (ext->which == Z_External_searchResult1)
2315             {
2316                 int j;
2317                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2318
2319                 if (sr->num)
2320                     ZOOM_options_set_int(
2321                         resultset->options, "searchresult.size", sr->num);
2322
2323                 for (j = 0; j < sr->num; j++)
2324                 {
2325                     Z_SearchInfoReport_s *ent =
2326                         ext->u.searchResult1->elements[j];
2327                     char pref[80];
2328
2329                     sprintf(pref, "searchresult.%d", j);
2330
2331                     if (ent->subqueryId)
2332                     {
2333                         char opt_name[80];
2334                         sprintf(opt_name, "%s.id", pref);
2335                         ZOOM_options_set(resultset->options, opt_name,
2336                                          ent->subqueryId);
2337                     }
2338                     if (ent->subqueryExpression)
2339                     {
2340                         char opt_name[80];
2341                         sprintf(opt_name, "%s.subquery", pref);
2342                         handle_queryExpression(resultset->options, opt_name,
2343                                                ent->subqueryExpression);
2344                     }
2345                     if (ent->subqueryInterpretation)
2346                     {
2347                         char opt_name[80];
2348                         sprintf(opt_name, "%s.interpretation", pref);
2349                         handle_queryExpression(resultset->options, opt_name,
2350                                                ent->subqueryInterpretation);
2351                     }
2352                     if (ent->subqueryRecommendation)
2353                     {
2354                         char opt_name[80];
2355                         sprintf(opt_name, "%s.recommendation", pref);
2356                         handle_queryExpression(resultset->options, opt_name,
2357                                                ent->subqueryRecommendation);
2358                     }
2359                     if (ent->subqueryCount)
2360                     {
2361                         char opt_name[80];
2362                         sprintf(opt_name, "%s.count", pref);
2363                         ZOOM_options_set_int(resultset->options, opt_name,
2364                                              *ent->subqueryCount);
2365                     }
2366                 }
2367             }
2368         }
2369     }
2370 }
2371
2372 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2373 {
2374     ZOOM_resultset resultset;
2375     ZOOM_Event event;
2376
2377     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2378         return ;
2379
2380     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2381     ZOOM_connection_put_event(c, event);
2382
2383     resultset = c->tasks->u.search.resultset;
2384
2385     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2386
2387     resultset->size = *sr->resultCount;
2388     handle_records(c, sr->records, 0);
2389 }
2390
2391 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2392 {
2393     if (res->diagnostics && res->num_diagnostics > 0)
2394         response_diag(c, res->diagnostics[0]);
2395 }
2396
2397 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2398 {
2399     NMEM nmem = odr_extract_mem(c->odr_in);
2400     ZOOM_scanset scan;
2401
2402     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2403         return 0;
2404     scan = c->tasks->u.scan.scan;
2405
2406     if (res->entries && res->entries->nonsurrogateDiagnostics)
2407         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2408     scan->scan_response = res;
2409     nmem_transfer(scan->odr->mem, nmem);
2410     if (res->stepSize)
2411         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2412     if (res->positionOfTerm)
2413         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2414     if (res->scanStatus)
2415         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2416     if (res->numberOfEntriesReturned)
2417         ZOOM_options_set_int(scan->options, "number",
2418                              *res->numberOfEntriesReturned);
2419     nmem_destroy(nmem);
2420     return 1;
2421 }
2422
2423 static zoom_ret send_sort(ZOOM_connection c,
2424                           ZOOM_resultset resultset)
2425 {
2426     if (c->error)
2427         resultset->r_sort_spec = 0;
2428     if (resultset->r_sort_spec)
2429     {
2430         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2431         Z_SortRequest *req = apdu->u.sortRequest;
2432
2433         req->num_inputResultSetNames = 1;
2434         req->inputResultSetNames = (Z_InternationalString **)
2435             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2436         req->inputResultSetNames[0] =
2437             odr_strdup(c->odr_out, resultset->setname);
2438         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2439         req->sortSequence = resultset->r_sort_spec;
2440         resultset->r_sort_spec = 0;
2441         return send_APDU(c, apdu);
2442     }
2443     return zoom_complete;
2444 }
2445
2446 static zoom_ret send_present(ZOOM_connection c)
2447 {
2448     Z_APDU *apdu = 0;
2449     Z_PresentRequest *req = 0;
2450     int i = 0;
2451     const char *syntax = 0;
2452     const char *elementSetName = 0;
2453     ZOOM_resultset  resultset;
2454     int *start, *count;
2455
2456     if (!c->tasks)
2457     {
2458         yaz_log(log_details, "%p send_present no tasks", c);
2459         return zoom_complete;
2460     }
2461
2462     switch (c->tasks->which)
2463     {
2464     case ZOOM_TASK_SEARCH:
2465         resultset = c->tasks->u.search.resultset;
2466         start = &c->tasks->u.search.start;
2467         count = &c->tasks->u.search.count;
2468         syntax = c->tasks->u.search.syntax;
2469         elementSetName = c->tasks->u.search.elementSetName;
2470         break;
2471     case ZOOM_TASK_RETRIEVE:
2472         resultset = c->tasks->u.retrieve.resultset;
2473         start = &c->tasks->u.retrieve.start;
2474         count = &c->tasks->u.retrieve.count;
2475         syntax = c->tasks->u.retrieve.syntax;
2476         elementSetName = c->tasks->u.retrieve.elementSetName;
2477
2478         if (*start >= resultset->size)
2479         {
2480             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2481                     c, *start, resultset->size);
2482             return zoom_complete;
2483         }
2484         if (*start + *count > resultset->size)
2485             *count = resultset->size - *start;
2486         break;
2487     default:
2488         return zoom_complete;
2489     }
2490     yaz_log(log_details, "%p send_present start=%d count=%d",
2491             c, *start, *count);
2492
2493     if (c->error)                  /* don't continue on error */
2494         return zoom_complete;
2495     if (*start < 0)
2496         return zoom_complete;
2497     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2498             resultset, *start, *count);
2499
2500     for (i = 0; i < *count; i++)
2501     {
2502         ZOOM_record rec =
2503             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2504         if (!rec)
2505             break;
2506         else
2507         {
2508             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2509             ZOOM_connection_put_event(c, event);
2510         }
2511     }
2512     *start += i;
2513     *count -= i;
2514
2515     if (*count == 0)
2516     {
2517         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2518         return zoom_complete;
2519     }
2520
2521     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2522     req = apdu->u.presentRequest;
2523
2524     if (i)
2525         yaz_log(log_details, "%p send_present skip=%d", c, i);
2526
2527     *req->resultSetStartPoint = *start + 1;
2528     *req->numberOfRecordsRequested = resultset->step>0 ?
2529         resultset->step : *count;
2530     if (*req->numberOfRecordsRequested + *start > resultset->size)
2531         *req->numberOfRecordsRequested = resultset->size - *start;
2532     assert(*req->numberOfRecordsRequested > 0);
2533
2534     if (syntax && *syntax)
2535         req->preferredRecordSyntax =
2536             yaz_str_to_z3950oid(c->odr_out, CLASS_RECSYN, syntax);
2537
2538     if (resultset->schema && *resultset->schema)
2539     {
2540         Z_RecordComposition *compo = (Z_RecordComposition *)
2541             odr_malloc(c->odr_out, sizeof(*compo));
2542
2543         req->recordComposition = compo;
2544         compo->which = Z_RecordComp_complex;
2545         compo->u.complex = (Z_CompSpec *)
2546             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2547         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2548             odr_malloc(c->odr_out, sizeof(bool_t));
2549         *compo->u.complex->selectAlternativeSyntax = 0;
2550
2551         compo->u.complex->generic = (Z_Specification *)
2552             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2553
2554         compo->u.complex->generic->which = Z_Schema_oid;
2555         compo->u.complex->generic->schema.oid = (Odr_oid *)
2556             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2557
2558         if (!compo->u.complex->generic->schema.oid)
2559         {
2560             /* OID wasn't a schema! Try record syntax instead. */
2561
2562             compo->u.complex->generic->schema.oid = (Odr_oid *)
2563                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2564         }
2565         if (elementSetName && *elementSetName)
2566         {
2567             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2568                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2569             compo->u.complex->generic->elementSpec->which =
2570                 Z_ElementSpec_elementSetName;
2571             compo->u.complex->generic->elementSpec->u.elementSetName =
2572                 odr_strdup(c->odr_out, elementSetName);
2573         }
2574         else
2575             compo->u.complex->generic->elementSpec = 0;
2576         compo->u.complex->num_dbSpecific = 0;
2577         compo->u.complex->dbSpecific = 0;
2578         compo->u.complex->num_recordSyntax = 0;
2579         compo->u.complex->recordSyntax = 0;
2580     }
2581     else if (elementSetName && *elementSetName)
2582     {
2583         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2584             odr_malloc(c->odr_out, sizeof(*esn));
2585         Z_RecordComposition *compo = (Z_RecordComposition *)
2586             odr_malloc(c->odr_out, sizeof(*compo));
2587
2588         esn->which = Z_ElementSetNames_generic;
2589         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2590         compo->which = Z_RecordComp_simple;
2591         compo->u.simple = esn;
2592         req->recordComposition = compo;
2593     }
2594     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2595     return send_APDU(c, apdu);
2596 }
2597
2598 ZOOM_API(ZOOM_scanset)
2599     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2600 {
2601     ZOOM_scanset s;
2602     ZOOM_query q = ZOOM_query_create();
2603
2604     ZOOM_query_prefix(q, start);
2605
2606     s = ZOOM_connection_scan1(c, q);
2607     ZOOM_query_destroy(q);
2608     return s;
2609
2610 }
2611
2612 ZOOM_API(ZOOM_scanset)
2613     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2614 {
2615     char *start;
2616     char *freeme = 0;
2617     ZOOM_scanset scan = 0;
2618
2619     /*
2620      * We need to check the query-type, so we can recognise CQL and
2621      * CCL and compile them into a form that we can use here.  The
2622      * ZOOM_query structure has no explicit `type' member, but
2623      * inspection of the ZOOM_query_prefix() and ZOOM_query_cql()
2624      * functions shows how the structure is set up in each case.
2625      */
2626     if (!q->z_query)
2627         return 0;
2628     else if (q->z_query->which == Z_Query_type_1)
2629     {
2630         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2631                 c, q, q->query_string);
2632         start = q->query_string;
2633     }
2634     else if (q->z_query->which == Z_Query_type_104)
2635     {
2636         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2637                 c, q, q->query_string);
2638         start = freeme = cql2pqf(c, q->query_string);
2639         if (start == 0)
2640             return 0;
2641     }
2642     else
2643     {
2644         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2645                 c, q, q->query_string);
2646         abort();
2647     }
2648
2649     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2650     scan->connection = c;
2651     scan->odr = odr_createmem(ODR_DECODE);
2652     scan->options = ZOOM_options_create_with_parent(c->options);
2653     scan->refcount = 1;
2654     scan->scan_response = 0;
2655     scan->termListAndStartPoint =
2656         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2657     xfree(freeme);
2658     if (scan->termListAndStartPoint != 0)
2659     {
2660         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2661         task->u.scan.scan = scan;
2662
2663         (scan->refcount)++;
2664         if (!c->async)
2665         {
2666             while (ZOOM_event(1, &c))
2667                 ;
2668         }
2669     }
2670     return scan;
2671 }
2672
2673 ZOOM_API(void)
2674     ZOOM_scanset_destroy(ZOOM_scanset scan)
2675 {
2676     if (!scan)
2677         return;
2678     (scan->refcount)--;
2679     if (scan->refcount == 0)
2680     {
2681         odr_destroy(scan->odr);
2682
2683         ZOOM_options_destroy(scan->options);
2684         xfree(scan);
2685     }
2686 }
2687
2688 static zoom_ret send_package(ZOOM_connection c)
2689 {
2690     ZOOM_Event event;
2691
2692     yaz_log(log_details, "%p send_package", c);
2693     if (!c->tasks)
2694         return zoom_complete;
2695     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2696
2697     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2698     ZOOM_connection_put_event(c, event);
2699
2700     c->buf_out = c->tasks->u.package->buf_out;
2701     c->len_out = c->tasks->u.package->len_out;
2702
2703     return do_write(c);
2704 }
2705
2706 static zoom_ret send_scan(ZOOM_connection c)
2707 {
2708     ZOOM_scanset scan;
2709     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2710     Z_ScanRequest *req = apdu->u.scanRequest;
2711
2712     yaz_log(log_details, "%p send_scan", c);
2713     if (!c->tasks)
2714         return zoom_complete;
2715     assert (c->tasks->which == ZOOM_TASK_SCAN);
2716     scan = c->tasks->u.scan.scan;
2717
2718     req->termListAndStartPoint = scan->termListAndStartPoint;
2719     req->attributeSet = scan->attributeSet;
2720
2721     *req->numberOfTermsRequested =
2722         ZOOM_options_get_int(scan->options, "number", 10);
2723
2724     req->preferredPositionInResponse =
2725         odr_intdup(c->odr_out,
2726                    ZOOM_options_get_int(scan->options, "position", 1));
2727
2728     req->stepSize =
2729         odr_intdup(c->odr_out,
2730                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2731
2732     req->databaseNames = set_DatabaseNames(c, scan->options,
2733                                            &req->num_databaseNames);
2734
2735     return send_APDU(c, apdu);
2736 }
2737
2738 ZOOM_API(size_t)
2739     ZOOM_scanset_size(ZOOM_scanset scan)
2740 {
2741     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2742         return 0;
2743     return scan->scan_response->entries->num_entries;
2744 }
2745
2746 ZOOM_API(const char *)
2747     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2748                       int *occ, int *len)
2749 {
2750     const char *term = 0;
2751     size_t noent = ZOOM_scanset_size(scan);
2752     Z_ScanResponse *res = scan->scan_response;
2753
2754     *len = 0;
2755     *occ = 0;
2756     if (pos >= noent)
2757         return 0;
2758     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2759     {
2760         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2761
2762         if (t->term->which == Z_Term_general)
2763         {
2764             term = (const char *) t->term->u.general->buf;
2765             *len = t->term->u.general->len;
2766         }
2767         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2768     }
2769     return term;
2770 }
2771
2772 ZOOM_API(const char *)
2773     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
2774                               int *occ, int *len)
2775 {
2776     const char *term = 0;
2777     size_t noent = ZOOM_scanset_size(scan);
2778     Z_ScanResponse *res = scan->scan_response;
2779
2780     *len = 0;
2781     *occ = 0;
2782     if (pos >= noent)
2783         return 0;
2784     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2785     {
2786         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2787
2788         if (t->displayTerm)
2789         {
2790             term = t->displayTerm;
2791             *len = strlen(term);
2792         }
2793         else if (t->term->which == Z_Term_general)
2794         {
2795             term = (const char *) t->term->u.general->buf;
2796             *len = t->term->u.general->len;
2797         }
2798         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2799     }
2800     return term;
2801 }
2802
2803 ZOOM_API(const char *)
2804     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
2805 {
2806     return ZOOM_options_get(scan->options, key);
2807 }
2808
2809 ZOOM_API(void)
2810     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
2811                             const char *val)
2812 {
2813     ZOOM_options_set(scan->options, key, val);
2814 }
2815
2816 static Z_APDU *create_es_package(ZOOM_package p, int type)
2817 {
2818     const char *str;
2819     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2820     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2821
2822     *req->function = Z_ExtendedServicesRequest_create;
2823
2824     str = ZOOM_options_get(p->options, "package-name");
2825     if (str && *str)
2826         req->packageName = nmem_strdup(p->odr_out->mem, str);
2827
2828     str = ZOOM_options_get(p->options, "user-id");
2829     if (str)
2830         req->userId = nmem_strdup(p->odr_out->mem, str);
2831
2832     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2833                                               type);
2834
2835     str = ZOOM_options_get(p->options, "function");
2836     if (str)
2837     {
2838         if (!strcmp (str, "create"))
2839             *req->function = 1;
2840         if (!strcmp (str, "delete"))
2841             *req->function = 2;
2842         if (!strcmp (str, "modify"))
2843             *req->function = 3;
2844     }
2845     return apdu;
2846 }
2847
2848 static const char *ill_array_lookup(void *clientData, const char *idx)
2849 {
2850     ZOOM_package p = (ZOOM_package) clientData;
2851     return ZOOM_options_get(p->options, idx+4);
2852 }
2853
2854 static Z_External *encode_ill_request(ZOOM_package p)
2855 {
2856     ODR out = p->odr_out;
2857     ILL_Request *req;
2858     Z_External *r = 0;
2859     struct ill_get_ctl ctl;
2860
2861     ctl.odr = p->odr_out;
2862     ctl.clientData = p;
2863     ctl.f = ill_array_lookup;
2864
2865     req = ill_get_ILLRequest(&ctl, "ill", 0);
2866
2867     if (!ill_Request(out, &req, 0, 0))
2868     {
2869         int ill_request_size;
2870         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
2871         if (ill_request_buf)
2872             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
2873         return 0;
2874     }
2875     else
2876     {
2877         oident oid;
2878         int illRequest_size = 0;
2879         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
2880
2881         oid.proto = PROTO_GENERAL;
2882         oid.oclass = CLASS_GENERAL;
2883         oid.value = VAL_ISO_ILL_1;
2884
2885         r = (Z_External *) odr_malloc(out, sizeof(*r));
2886         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2887         r->indirect_reference = 0;
2888         r->descriptor = 0;
2889         r->which = Z_External_single;
2890
2891         r->u.single_ASN1_type =
2892             odr_create_Odr_oct(out,
2893                                (unsigned char *)illRequest_buf,
2894                                illRequest_size);
2895     }
2896     return r;
2897 }
2898
2899 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2900 {
2901     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
2902     const char *str;
2903
2904     req->which = Z_IOItemOrder_esRequest;
2905     req->u.esRequest = (Z_IORequest *)
2906         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2907
2908     /* to keep part ... */
2909     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2910         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2911     req->u.esRequest->toKeep->supplDescription = 0;
2912     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2913         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2914
2915     str = ZOOM_options_get(p->options, "contact-name");
2916     req->u.esRequest->toKeep->contact->name = str ?
2917         nmem_strdup(p->odr_out->mem, str) : 0;
2918
2919     str = ZOOM_options_get(p->options, "contact-phone");
2920     req->u.esRequest->toKeep->contact->phone = str ?
2921         nmem_strdup(p->odr_out->mem, str) : 0;
2922
2923     str = ZOOM_options_get(p->options, "contact-email");
2924     req->u.esRequest->toKeep->contact->email = str ?
2925         nmem_strdup(p->odr_out->mem, str) : 0;
2926
2927     req->u.esRequest->toKeep->addlBilling = 0;
2928
2929     /* not to keep part ... */
2930     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2931         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2932
2933     str = ZOOM_options_get(p->options, "itemorder-setname");
2934     if (!str)
2935         str = "default";
2936
2937     if (!*str)
2938         req->u.esRequest->notToKeep->resultSetItem = 0;
2939     else
2940     {
2941         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2942             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2943
2944         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2945             nmem_strdup(p->odr_out->mem, str);
2946         req->u.esRequest->notToKeep->resultSetItem->item =
2947             (int *) odr_malloc(p->odr_out, sizeof(int));
2948
2949         str = ZOOM_options_get(p->options, "itemorder-item");
2950         *req->u.esRequest->notToKeep->resultSetItem->item =
2951             (str ? atoi(str) : 1);
2952     }
2953     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2954
2955     return req;
2956 }
2957
2958 Z_APDU *create_admin_package(ZOOM_package p, int type,
2959                              Z_ESAdminOriginPartToKeep **toKeepP,
2960                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2961 {
2962     Z_APDU *apdu = create_es_package(p, VAL_ADMINSERVICE);
2963     if (apdu)
2964     {
2965         Z_ESAdminOriginPartToKeep  *toKeep;
2966         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2967         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
2968         const char *first_db = "Default";
2969         int num_db;
2970         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2971         if (num_db > 0)
2972             first_db = db[0];
2973
2974         r->direct_reference =
2975             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2976                                    VAL_ADMINSERVICE);
2977         r->descriptor = 0;
2978         r->indirect_reference = 0;
2979         r->which = Z_External_ESAdmin;
2980
2981         r->u.adminService = (Z_Admin *)
2982             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2983         r->u.adminService->which = Z_Admin_esRequest;
2984         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2985             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2986
2987         toKeep = r->u.adminService->u.esRequest->toKeep =
2988             (Z_ESAdminOriginPartToKeep *)
2989             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2990         toKeep->which = type;
2991         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2992         toKeep->u.create = odr_nullval();
2993         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2994
2995         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2996             (Z_ESAdminOriginPartNotToKeep *)
2997             odr_malloc(p->odr_out,
2998                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2999         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3000         notToKeep->u.recordsWillFollow = odr_nullval();
3001         if (toKeepP)
3002             *toKeepP = toKeep;
3003         if (notToKeepP)
3004             *notToKeepP = notToKeep;
3005     }
3006     return apdu;
3007 }
3008
3009 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3010 {
3011     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
3012     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3013     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3014     const char *doc = ZOOM_options_get(p->options, "doc");
3015
3016     if (!doc)
3017         doc = "";
3018
3019     req->taskSpecificParameters = ext;
3020     ext->direct_reference = req->packageType;
3021     ext->descriptor = 0;
3022     ext->indirect_reference = 0;
3023
3024     ext->which = Z_External_octet;
3025     ext->u.single_ASN1_type =
3026         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
3027                            strlen(doc));
3028     return apdu;
3029 }
3030
3031 static Z_APDU *create_update_package(ZOOM_package p)
3032 {
3033     Z_APDU *apdu = 0;
3034     const char *first_db = "Default";
3035     int num_db;
3036     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
3037     const char *action = ZOOM_options_get(p->options, "action");
3038     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
3039     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3040     const char *record_buf = ZOOM_options_get(p->options, "record");
3041     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3042     int syntax_oid = VAL_NONE;
3043     int action_no = -1;
3044
3045     if (syntax_str)
3046         syntax_oid = oid_getvalbyname(syntax_str);
3047     if (!record_buf)
3048     {
3049         record_buf = "void";
3050         syntax_oid = VAL_SUTRS;
3051     }
3052     if (syntax_oid == VAL_NONE)
3053         syntax_oid = VAL_TEXT_XML;
3054
3055     if (num_db > 0)
3056         first_db = db[0];
3057
3058     if (!action)
3059         action = "specialUpdate";
3060
3061     if (!strcmp(action, "recordInsert"))
3062         action_no = Z_IUOriginPartToKeep_recordInsert;
3063     else if (!strcmp(action, "recordReplace"))
3064         action_no = Z_IUOriginPartToKeep_recordReplace;
3065     else if (!strcmp(action, "recordDelete"))
3066         action_no = Z_IUOriginPartToKeep_recordDelete;
3067     else if (!strcmp(action, "elementUpdate"))
3068         action_no = Z_IUOriginPartToKeep_elementUpdate;
3069     else if (!strcmp(action, "specialUpdate"))
3070         action_no = Z_IUOriginPartToKeep_specialUpdate;
3071     else
3072         return 0;
3073
3074     apdu = create_es_package(p, VAL_DBUPDATE);
3075     if (apdu)
3076     {
3077         Z_IUOriginPartToKeep *toKeep;
3078         Z_IUSuppliedRecords *notToKeep;
3079         Z_External *r = (Z_External *)
3080             odr_malloc(p->odr_out, sizeof(*r));
3081
3082         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3083
3084         r->direct_reference =
3085             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3086                                    VAL_DBUPDATE);
3087         r->descriptor = 0;
3088         r->which = Z_External_update;
3089         r->indirect_reference = 0;
3090         r->u.update = (Z_IUUpdate *)
3091             odr_malloc(p->odr_out, sizeof(*r->u.update));
3092
3093         r->u.update->which = Z_IUUpdate_esRequest;
3094         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3095             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3096         toKeep = r->u.update->u.esRequest->toKeep =
3097             (Z_IUOriginPartToKeep *)
3098             odr_malloc(p->odr_out, sizeof(*toKeep));
3099
3100         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3101         toKeep->schema = 0;
3102         toKeep->elementSetName = 0;
3103         toKeep->actionQualifier = 0;
3104         toKeep->action = odr_intdup(p->odr_out, action_no);
3105
3106         notToKeep = r->u.update->u.esRequest->notToKeep =
3107             (Z_IUSuppliedRecords *)
3108             odr_malloc(p->odr_out, sizeof(*notToKeep));
3109         notToKeep->num = 1;
3110         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3111             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3112         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3113             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3114         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3115         if (recordIdOpaque)
3116         {
3117             notToKeep->elements[0]->u.opaque =
3118                 odr_create_Odr_oct(p->odr_out,
3119                                    (const unsigned char *) recordIdOpaque,
3120                                    strlen(recordIdOpaque));
3121         }
3122         else if (recordIdNumber)
3123         {
3124             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3125
3126             notToKeep->elements[0]->u.number =
3127                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3128         }
3129         else
3130             notToKeep->elements[0]->u.opaque = 0;
3131         notToKeep->elements[0]->supplementalId = 0;
3132         notToKeep->elements[0]->correlationInfo = 0;
3133         notToKeep->elements[0]->record =
3134             z_ext_record(p->odr_out, syntax_oid,
3135                          record_buf, strlen(record_buf));
3136     }
3137     if (0 && apdu)
3138     {
3139         ODR print = odr_createmem(ODR_PRINT);
3140
3141         z_APDU(print, &apdu, 0, 0);
3142         odr_destroy(print);
3143     }
3144     return apdu;
3145 }
3146
3147 ZOOM_API(void)
3148     ZOOM_package_send(ZOOM_package p, const char *type)
3149 {
3150     Z_APDU *apdu = 0;
3151     ZOOM_connection c;
3152     if (!p)
3153         return;
3154     c = p->connection;
3155     odr_reset(p->odr_out);
3156     xfree(p->buf_out);
3157     p->buf_out = 0;
3158     if (!strcmp(type, "itemorder"))
3159     {
3160         apdu = create_es_package(p, VAL_ITEMORDER);
3161         if (apdu)
3162         {
3163             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3164
3165             r->direct_reference =
3166                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3167                                        VAL_ITEMORDER);
3168             r->descriptor = 0;
3169             r->which = Z_External_itemOrder;
3170             r->indirect_reference = 0;
3171             r->u.itemOrder = encode_item_order(p);
3172
3173             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3174         }
3175     }
3176     else if (!strcmp(type, "create"))  /* create database */
3177     {
3178         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3179                                     0, 0);
3180     }
3181     else if (!strcmp(type, "drop"))  /* drop database */
3182     {
3183         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3184                                     0, 0);
3185     }
3186     else if (!strcmp(type, "commit"))  /* commit changes */
3187     {
3188         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3189                                     0, 0);
3190     }
3191     else if (!strcmp(type, "update")) /* update record(s) */
3192     {
3193         apdu = create_update_package(p);
3194     }
3195     else if (!strcmp(type, "xmlupdate"))
3196     {
3197         apdu = create_xmlupdate_package(p);
3198     }
3199     if (apdu)
3200     {
3201         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3202         {
3203             char *buf;
3204
3205             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3206             task->u.package = p;
3207             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3208             p->buf_out = (char *) xmalloc(p->len_out);
3209             memcpy(p->buf_out, buf, p->len_out);
3210
3211             (p->refcount)++;
3212             if (!c->async)
3213             {
3214                 while (ZOOM_event(1, &c))
3215                     ;
3216             }
3217         }
3218     }
3219 }
3220
3221 ZOOM_API(ZOOM_package)
3222     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3223 {
3224     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3225
3226     p->connection = c;
3227     p->odr_out = odr_createmem(ODR_ENCODE);
3228     p->options = ZOOM_options_create_with_parent2(options, c->options);
3229     p->refcount = 1;
3230     p->buf_out = 0;
3231     p->len_out = 0;
3232     return p;
3233 }
3234
3235 ZOOM_API(void)
3236     ZOOM_package_destroy(ZOOM_package p)
3237 {
3238     if (!p)
3239         return;
3240     (p->refcount)--;
3241     if (p->refcount == 0)
3242     {
3243         odr_destroy(p->odr_out);
3244         xfree(p->buf_out);
3245
3246         ZOOM_options_destroy(p->options);
3247         xfree(p);
3248     }
3249 }
3250
3251 ZOOM_API(const char *)
3252     ZOOM_package_option_get(ZOOM_package p, const char *key)
3253 {
3254     return ZOOM_options_get(p->options, key);
3255 }
3256
3257
3258 ZOOM_API(void)
3259     ZOOM_package_option_set(ZOOM_package p, const char *key,
3260                             const char *val)
3261 {
3262     ZOOM_options_set(p->options, key, val);
3263 }
3264
3265 static int ZOOM_connection_exec_task(ZOOM_connection c)
3266 {
3267     ZOOM_task task = c->tasks;
3268     zoom_ret ret = zoom_complete;
3269
3270     if (!task)
3271         return 0;
3272     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3273             c, task->which, task->running);
3274     if (c->error != ZOOM_ERROR_NONE)
3275     {
3276         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3277                 "removing tasks because of error = %d", c, c->error);
3278         ZOOM_connection_remove_tasks(c);
3279         return 0;
3280     }
3281     if (task->running)
3282     {
3283         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3284                 "task already running", c);
3285         return 0;
3286     }
3287     task->running = 1;
3288     ret = zoom_complete;
3289     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3290     {
3291         switch (task->which)
3292         {
3293         case ZOOM_TASK_SEARCH:
3294             if (c->proto == PROTO_HTTP)
3295                 ret = ZOOM_connection_srw_send_search(c);
3296             else
3297                 ret = ZOOM_connection_send_search(c);
3298             break;
3299         case ZOOM_TASK_RETRIEVE:
3300             if (c->proto == PROTO_HTTP)
3301                 ret = ZOOM_connection_srw_send_search(c);
3302             else
3303                 ret = send_present(c);
3304             break;
3305         case ZOOM_TASK_CONNECT:
3306             ret = do_connect(c);
3307             break;
3308         case ZOOM_TASK_SCAN:
3309             ret = send_scan(c);
3310             break;
3311         case ZOOM_TASK_PACKAGE:
3312             ret = send_package(c);
3313             break;
3314         case ZOOM_TASK_SORT:
3315             c->tasks->u.sort.resultset->r_sort_spec =
3316                 c->tasks->u.sort.q->sort_spec;
3317             ret = send_sort(c, c->tasks->u.sort.resultset);
3318             break;
3319         }
3320     }
3321     else
3322     {
3323         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3324                 "remove tasks because no connection exist", c);
3325         ZOOM_connection_remove_tasks(c);
3326     }
3327     if (ret == zoom_complete)
3328     {
3329         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3330                 "task removed (complete)", c);
3331         ZOOM_connection_remove_task(c);
3332         return 0;
3333     }
3334     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3335             "task pending", c);
3336     return 1;
3337 }
3338
3339 static zoom_ret send_sort_present(ZOOM_connection c)
3340 {
3341     zoom_ret r = zoom_complete;
3342
3343     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3344         r = send_sort(c, c->tasks->u.search.resultset);
3345     if (r == zoom_complete)
3346         r = send_present(c);
3347     return r;
3348 }
3349
3350 static int es_response(ZOOM_connection c,
3351                        Z_ExtendedServicesResponse *res)
3352 {
3353     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3354         return 0;
3355     if (res->diagnostics && res->num_diagnostics > 0)
3356         response_diag(c, res->diagnostics[0]);
3357     if (res->taskPackage &&
3358         res->taskPackage->which == Z_External_extendedService)
3359     {
3360         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3361         Odr_oct *id = taskPackage->targetReference;
3362
3363         if (id)
3364             ZOOM_options_setl(c->tasks->u.package->options,
3365                               "targetReference", (char*) id->buf, id->len);
3366     }
3367     if (res->taskPackage &&
3368         res->taskPackage->which == Z_External_octet)
3369     {
3370         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3371         ZOOM_options_setl(c->tasks->u.package->options,
3372                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3373     }
3374     return 1;
3375 }
3376
3377 static void interpret_init_diag(ZOOM_connection c,
3378                                 Z_DiagnosticFormat *diag)
3379 {
3380     if (diag->num > 0)
3381     {
3382         Z_DiagnosticFormat_s *ds = diag->elements[0];
3383         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3384             response_default_diag(c, ds->u.defaultDiagRec);
3385     }
3386 }
3387
3388
3389 static void interpret_otherinformation_field(ZOOM_connection c,
3390                                              Z_OtherInformation *ui)
3391 {
3392     int i;
3393     for (i = 0; i < ui->num_elements; i++)
3394     {
3395         Z_OtherInformationUnit *unit = ui->list[i];
3396         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3397             unit->information.externallyDefinedInfo &&
3398             unit->information.externallyDefinedInfo->which ==
3399             Z_External_diag1)
3400         {
3401             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3402         }
3403     }
3404 }
3405
3406 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3407 {
3408     Z_InitResponse *initrs;
3409
3410     c->mask = 0;
3411     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3412     switch(apdu->which)
3413     {
3414     case Z_APDU_initResponse:
3415         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3416         initrs = apdu->u.initResponse;
3417         ZOOM_connection_option_set(c, "serverImplementationId",
3418                                    initrs->implementationId ?
3419                                    initrs->implementationId : "");
3420         ZOOM_connection_option_set(c, "serverImplementationName",
3421                                    initrs->implementationName ?
3422                                    initrs->implementationName : "");
3423         ZOOM_connection_option_set(c, "serverImplementationVersion",
3424                                    initrs->implementationVersion ?
3425                                    initrs->implementationVersion : "");
3426         /* Set the three old options too, for old applications */
3427         ZOOM_connection_option_set(c, "targetImplementationId",
3428                                    initrs->implementationId ?
3429                                    initrs->implementationId : "");
3430         ZOOM_connection_option_set(c, "targetImplementationName",
3431                                    initrs->implementationName ?
3432                                    initrs->implementationName : "");
3433         ZOOM_connection_option_set(c, "targetImplementationVersion",
3434                                    initrs->implementationVersion ?
3435                                    initrs->implementationVersion : "");
3436         if (!*initrs->result)
3437         {
3438             Z_External *uif = initrs->userInformationField;
3439
3440             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3441
3442             if (uif && uif->which == Z_External_userInfo1)
3443                 interpret_otherinformation_field(c, uif->u.userInfo1);
3444         }
3445         else
3446         {
3447             char *cookie =
3448                 yaz_oi_get_string_oidval(&apdu->u.initResponse->otherInfo,
3449                                          VAL_COOKIE, 1, 0);
3450             xfree(c->cookie_in);
3451             c->cookie_in = 0;
3452             if (cookie)
3453                 c->cookie_in = xstrdup(cookie);
3454             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3455                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3456                 c->support_named_resultsets = 1;
3457             if (c->tasks)
3458             {
3459                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3460                 ZOOM_connection_remove_task(c);
3461             }
3462             ZOOM_connection_exec_task(c);
3463         }
3464         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3465         {
3466             NMEM tmpmem = nmem_create();
3467             Z_CharSetandLanguageNegotiation *p =
3468                 yaz_get_charneg_record(initrs->otherInfo);
3469
3470             if (p)
3471             {
3472                 char *charset = NULL, *lang = NULL;
3473                 int sel;
3474
3475                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3476                 yaz_log(log_details, "%p recv_apdu target accepted: "
3477                         "charset %s, language %s, select %d",
3478                         c,
3479                         charset ? charset : "none", lang ? lang : "none", sel);
3480                 if (charset)
3481                     ZOOM_connection_option_set(c, "negotiation-charset",
3482                                                charset);
3483                 if (lang)
3484                     ZOOM_connection_option_set(c, "negotiation-lang",
3485                                                lang);
3486
3487                 ZOOM_connection_option_set(
3488                     c,  "negotiation-charset-in-effect-for-records",
3489                     (sel != 0) ? "1" : "0");
3490                 nmem_destroy(tmpmem);
3491             }
3492         }
3493         break;
3494     case Z_APDU_searchResponse:
3495         yaz_log(log_api, "%p recv_apdu Search response", c);
3496         handle_search_response(c, apdu->u.searchResponse);
3497         if (send_sort_present(c) == zoom_complete)
3498             ZOOM_connection_remove_task(c);
3499         break;
3500     case Z_APDU_presentResponse:
3501         yaz_log(log_api, "%p recv_apdu Present response", c);
3502         handle_present_response(c, apdu->u.presentResponse);
3503         if (send_present(c) == zoom_complete)
3504             ZOOM_connection_remove_task(c);
3505         break;
3506     case Z_APDU_sortResponse:
3507         yaz_log(log_api, "%p recv_apdu Sort response", c);
3508         sort_response(c, apdu->u.sortResponse);
3509         if (send_present(c) == zoom_complete)
3510             ZOOM_connection_remove_task(c);
3511         break;
3512     case Z_APDU_scanResponse:
3513         yaz_log(log_api, "%p recv_apdu Scan response", c);
3514         scan_response(c, apdu->u.scanResponse);
3515         ZOOM_connection_remove_task(c);
3516         break;
3517     case Z_APDU_extendedServicesResponse:
3518         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3519         es_response(c, apdu->u.extendedServicesResponse);
3520         ZOOM_connection_remove_task(c);
3521         break;
3522     case Z_APDU_close:
3523         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3524         if (!ZOOM_test_reconnect(c))
3525         {
3526             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3527             do_close(c);
3528         }
3529         break;
3530     default:
3531         yaz_log(log_api, "%p Received unknown PDU", c);
3532         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3533         do_close(c);
3534     }
3535 }
3536
3537 #if YAZ_HAVE_XML2
3538 static void handle_srw_response(ZOOM_connection c,
3539                                 Z_SRW_searchRetrieveResponse *res)
3540 {
3541     ZOOM_resultset resultset = 0;
3542     int i;
3543     NMEM nmem;
3544     ZOOM_Event event;
3545     int *start;
3546     const char *syntax, *elementSetName;
3547
3548     if (!c->tasks)
3549         return;
3550
3551     switch(c->tasks->which)
3552     {
3553     case ZOOM_TASK_SEARCH:
3554         resultset = c->tasks->u.search.resultset;
3555         start = &c->tasks->u.search.start;
3556         syntax = c->tasks->u.search.syntax;
3557         elementSetName = c->tasks->u.search.elementSetName;
3558         break;
3559     case ZOOM_TASK_RETRIEVE:
3560         resultset = c->tasks->u.retrieve.resultset;
3561         start = &c->tasks->u.retrieve.start;
3562         syntax = c->tasks->u.retrieve.syntax;
3563         elementSetName = c->tasks->u.retrieve.elementSetName;
3564         break;
3565     default:
3566         return;
3567     }
3568     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3569     ZOOM_connection_put_event(c, event);
3570
3571     resultset->size = 0;
3572
3573     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3574
3575     if (res->numberOfRecords)
3576         resultset->size = *res->numberOfRecords;
3577
3578     for (i = 0; i<res->num_records; i++)
3579     {
3580         int pos;
3581
3582         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3583             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3584
3585         if (res->records[i].recordPosition &&
3586             *res->records[i].recordPosition > 0)
3587             pos = *res->records[i].recordPosition - 1;
3588         else
3589             pos = *start + i;
3590
3591         npr->databaseName = 0;
3592         npr->which = Z_NamePlusRecord_databaseRecord;
3593         npr->u.databaseRecord = (Z_External *)
3594             odr_malloc(c->odr_in, sizeof(Z_External));
3595         npr->u.databaseRecord->descriptor = 0;
3596         npr->u.databaseRecord->direct_reference =
3597             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3598         npr->u.databaseRecord->which = Z_External_octet;
3599
3600         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3601             odr_malloc(c->odr_in, sizeof(Odr_oct));
3602         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3603             res->records[i].recordData_buf;
3604         npr->u.databaseRecord->u.octet_aligned->len =
3605             npr->u.databaseRecord->u.octet_aligned->size =
3606             res->records[i].recordData_len;
3607         record_cache_add(resultset, npr, pos, syntax, elementSetName);
3608     }
3609     if (res->num_diagnostics > 0)
3610     {
3611         const char *uri = res->diagnostics[0].uri;
3612         if (uri)
3613         {
3614             int code = 0;
3615             const char *cp;
3616             if ((cp = strrchr(uri, '/')))
3617                 code = atoi(cp+1);
3618             set_dset_error(c, code, uri,
3619                            res->diagnostics[0].details, 0);
3620         }
3621     }
3622     nmem = odr_extract_mem(c->odr_in);
3623     nmem_transfer(resultset->odr->mem, nmem);
3624     nmem_destroy(nmem);
3625 }
3626 #endif
3627
3628 #if YAZ_HAVE_XML2
3629 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3630 {
3631     int ret = -1;
3632     const char *content_type = z_HTTP_header_lookup(hres->headers,
3633                                                     "Content-Type");
3634     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3635                                                        "Connection");
3636     c->mask = 0;
3637     yaz_log(log_details, "%p handle_http", c);
3638
3639     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3640     {
3641         Z_SOAP *soap_package = 0;
3642         ODR o = c->odr_in;
3643         Z_SOAP_Handler soap_handlers[2] = {
3644             {"http://www.loc.gov/zing/srw/", 0,
3645              (Z_SOAP_fun) yaz_srw_codec},
3646             {0, 0, 0}
3647         };
3648         ret = z_soap_codec(o, &soap_package,
3649                            &hres->content_buf, &hres->content_len,
3650                            soap_handlers);
3651         if (!ret && soap_package->which == Z_SOAP_generic &&
3652             soap_package->u.generic->no == 0)
3653         {
3654             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3655             if (sr->which == Z_SRW_searchRetrieve_response)
3656                 handle_srw_response(c, sr->u.response);
3657             else
3658                 ret = -1;
3659         }
3660         else if (!ret && (soap_package->which == Z_SOAP_fault
3661                           || soap_package->which == Z_SOAP_error))
3662         {
3663             set_HTTP_error(c, hres->code,
3664                            soap_package->u.fault->fault_code,
3665                            soap_package->u.fault->fault_string);
3666         }
3667         else
3668             ret = -1;
3669     }
3670     if (ret)
3671     {
3672         if (hres->code != 200)
3673             set_HTTP_error(c, hres->code, 0, 0);
3674         else
3675             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3676         do_close(c);
3677     }
3678     ZOOM_connection_remove_task(c);
3679     if (!strcmp(hres->version, "1.0"))
3680     {
3681         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3682         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3683             do_close(c);
3684     }
3685     else
3686     {
3687         /* HTTP 1.1: only if no close we stay alive .. */
3688         if (connection_head && !strcmp(connection_head, "close"))
3689             do_close(c);
3690     }
3691 }
3692 #endif
3693
3694 static int do_read(ZOOM_connection c)
3695 {
3696     int r, more;
3697     ZOOM_Event event;
3698
3699     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
3700     ZOOM_connection_put_event(c, event);
3701
3702     r = cs_get(c->cs, &c->buf_in, &c->len_in);
3703     more = cs_more(c->cs);
3704     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3705     if (r == 1)
3706         return 0;
3707     if (r <= 0)
3708     {
3709         if (ZOOM_test_reconnect(c))
3710         {
3711             yaz_log(log_details, "%p do_read reconnect read", c);
3712         }
3713         else
3714         {
3715             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3716             do_close(c);
3717         }
3718     }
3719     else
3720     {
3721         Z_GDU *gdu;
3722         ZOOM_Event event;
3723
3724         odr_reset(c->odr_in);
3725         odr_setbuf(c->odr_in, c->buf_in, r, 0);
3726         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
3727         ZOOM_connection_put_event(c, event);
3728
3729         if (!z_GDU(c->odr_in, &gdu, 0, 0))
3730         {
3731             int x;
3732             int err = odr_geterrorx(c->odr_in, &x);
3733             char msg[60];
3734             const char *element = odr_getelement(c->odr_in);
3735             sprintf(msg, "ODR code %d:%d element=%-20s",
3736                     err, x, element ? element : "<unknown>");
3737             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3738             do_close(c);
3739         }
3740         else if (gdu->which == Z_GDU_Z3950)
3741             recv_apdu(c, gdu->u.z3950);
3742         else if (gdu->which == Z_GDU_HTTP_Response)
3743         {
3744 #if YAZ_HAVE_XML2
3745             handle_http(c, gdu->u.HTTP_Response);
3746 #else
3747             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3748             do_close(c);
3749 #endif
3750         }
3751         c->reconnect_ok = 0;
3752     }
3753     return 1;
3754 }
3755
3756 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
3757 {
3758     int r;
3759     ZOOM_Event event;
3760
3761     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3762     ZOOM_connection_put_event(c, event);
3763
3764     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3765     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3766     {
3767         yaz_log(log_details, "%p do_write_ex write failed", c);
3768         if (ZOOM_test_reconnect(c))
3769         {
3770             return zoom_pending;
3771         }
3772         if (c->state == STATE_CONNECTING)
3773             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3774         else
3775             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3776         do_close(c);
3777         return zoom_complete;
3778     }
3779     else if (r == 1)
3780     {
3781         c->mask = ZOOM_SELECT_EXCEPT;
3782         if (c->cs->io_pending & CS_WANT_WRITE)
3783             c->mask += ZOOM_SELECT_WRITE;
3784         if (c->cs->io_pending & CS_WANT_READ)
3785             c->mask += ZOOM_SELECT_READ;
3786         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3787                 c, c->mask);
3788     }
3789     else
3790     {
3791         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3792         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3793                 c, c->mask);
3794     }
3795     return zoom_pending;
3796 }
3797
3798 static zoom_ret do_write(ZOOM_connection c)
3799 {
3800     return do_write_ex(c, c->buf_out, c->len_out);
3801 }
3802
3803
3804 ZOOM_API(const char *)
3805     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
3806 {
3807     return ZOOM_options_get(c->options, key);
3808 }
3809
3810 ZOOM_API(const char *)
3811     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
3812 {
3813     return ZOOM_options_getl(c->options, key, lenp);
3814 }
3815
3816 ZOOM_API(void)
3817     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
3818                                const char *val)
3819 {
3820     ZOOM_options_set(c->options, key, val);
3821 }
3822
3823 ZOOM_API(void)
3824     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
3825                                 const char *val, int len)
3826 {
3827     ZOOM_options_setl(c->options, key, val, len);
3828 }
3829
3830 ZOOM_API(const char *)
3831     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
3832 {
3833     return ZOOM_options_get(r->options, key);
3834 }
3835
3836 ZOOM_API(void)
3837     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
3838                               const char *val)
3839 {
3840     ZOOM_options_set(r->options, key, val);
3841 }
3842
3843
3844 ZOOM_API(int)
3845     ZOOM_connection_errcode(ZOOM_connection c)
3846 {
3847     return ZOOM_connection_error(c, 0, 0);
3848 }
3849
3850 ZOOM_API(const char *)
3851     ZOOM_connection_errmsg(ZOOM_connection c)
3852 {
3853     const char *msg;
3854     ZOOM_connection_error(c, &msg, 0);
3855     return msg;
3856 }
3857
3858 ZOOM_API(const char *)
3859     ZOOM_connection_addinfo(ZOOM_connection c)
3860 {
3861     const char *addinfo;
3862     ZOOM_connection_error(c, 0, &addinfo);
3863     return addinfo;
3864 }
3865
3866 ZOOM_API(const char *)
3867     ZOOM_connection_diagset(ZOOM_connection c)
3868 {
3869     const char *diagset;
3870     ZOOM_connection_error_x(c, 0, 0, &diagset);
3871     return diagset;
3872 }
3873
3874 ZOOM_API(const char *)
3875     ZOOM_diag_str(int error)
3876 {
3877     switch (error)
3878     {
3879     case ZOOM_ERROR_NONE:
3880         return "No error";
3881     case ZOOM_ERROR_CONNECT:
3882         return "Connect failed";
3883     case ZOOM_ERROR_MEMORY:
3884         return "Out of memory";
3885     case ZOOM_ERROR_ENCODE:
3886         return "Encoding failed";
3887     case ZOOM_ERROR_DECODE:
3888         return "Decoding failed";
3889     case ZOOM_ERROR_CONNECTION_LOST:
3890         return "Connection lost";
3891     case ZOOM_ERROR_INIT:
3892         return "Init rejected";
3893     case ZOOM_ERROR_INTERNAL:
3894         return "Internal failure";
3895     case ZOOM_ERROR_TIMEOUT:
3896         return "Timeout";
3897     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3898         return "Unsupported protocol";
3899     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3900         return "Unsupported query type";
3901     case ZOOM_ERROR_INVALID_QUERY:
3902         return "Invalid query";
3903     case ZOOM_ERROR_CQL_PARSE:
3904         return "CQL parsing error";
3905     case ZOOM_ERROR_CQL_TRANSFORM:
3906         return "CQL transformation error";
3907     case ZOOM_ERROR_CCL_CONFIG:
3908         return "CCL configuration error";
3909     case ZOOM_ERROR_CCL_PARSE:
3910         return "CCL parsing error";
3911     default:
3912         return diagbib1_str(error);
3913     }
3914 }
3915
3916 ZOOM_API(int)
3917     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
3918                             const char **addinfo, const char **diagset)
3919 {
3920     int error = c->error;
3921     if (cp)
3922     {
3923         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3924             *cp = ZOOM_diag_str(error);
3925         else if (!strcmp(c->diagset, "HTTP"))
3926             *cp = z_HTTP_errmsg(c->error);
3927         else if (!strcmp(c->diagset, "Bib-1"))
3928             *cp = ZOOM_diag_str(error);
3929         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3930             *cp = yaz_diag_srw_str(c->error);
3931         else
3932             *cp = "Unknown error and diagnostic set";
3933     }
3934     if (addinfo)
3935         *addinfo = c->addinfo ? c->addinfo : "";
3936     if (diagset)
3937         *diagset = c->diagset ? c->diagset : "";
3938     return c->error;
3939 }
3940
3941 ZOOM_API(int)
3942     ZOOM_connection_error(ZOOM_connection c, const char **cp,
3943                           const char **addinfo)
3944 {
3945     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3946 }
3947
3948 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
3949 {
3950     ZOOM_Event event = 0;
3951     int r = cs_look(c->cs);
3952     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3953             c, mask, r);
3954
3955     if (r == CS_NONE)
3956     {
3957         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
3958         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3959         do_close(c);
3960         ZOOM_connection_put_event(c, event);
3961     }
3962     else if (r == CS_CONNECT)
3963     {
3964         int ret = ret = cs_rcvconnect(c->cs);
3965         yaz_log(log_details, "%p ZOOM_connection_do_io "
3966                 "cs_rcvconnect returned %d", c, ret);
3967         if (ret == 1)
3968         {
3969             c->mask = ZOOM_SELECT_EXCEPT;
3970             if (c->cs->io_pending & CS_WANT_WRITE)
3971                 c->mask += ZOOM_SELECT_WRITE;
3972             if (c->cs->io_pending & CS_WANT_READ)
3973                 c->mask += ZOOM_SELECT_READ;
3974         }
3975         else if (ret == 0)
3976         {
3977             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
3978             ZOOM_connection_put_event(c, event);
3979             get_cert(c);
3980             if (c->proto == PROTO_Z3950)
3981                 ZOOM_connection_send_init(c);
3982             else
3983             {
3984                 /* no init request for SRW .. */
3985                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3986                 ZOOM_connection_remove_task(c);
3987                 c->mask = 0;
3988                 ZOOM_connection_exec_task(c);
3989             }
3990             c->state = STATE_ESTABLISHED;
3991         }
3992         else
3993         {
3994             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3995             do_close(c);
3996         }
3997     }
3998     else
3999     {
4000         if (mask & ZOOM_SELECT_EXCEPT)
4001         {
4002             if (ZOOM_test_reconnect(c))
4003             {
4004                 event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4005                 ZOOM_connection_put_event(c, event);
4006             }
4007             else
4008             {
4009                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4010                 do_close(c);
4011             }
4012             return;
4013         }
4014         if (mask & ZOOM_SELECT_READ)
4015             do_read(c);
4016         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4017             do_write(c);
4018     }
4019 }
4020
4021 ZOOM_API(int)
4022     ZOOM_connection_last_event(ZOOM_connection cs)
4023 {
4024     if (!cs)
4025         return ZOOM_EVENT_NONE;
4026     return cs->last_event;
4027 }
4028
4029 ZOOM_API(int)
4030     ZOOM_event(int no, ZOOM_connection *cs)
4031 {
4032     int timeout = 30;      /* default timeout in seconds */
4033     int timeout_set = 0;   /* whether it was overriden at all */
4034 #if HAVE_SYS_POLL_H
4035     struct pollfd pollfds[1024];
4036     ZOOM_connection poll_cs[1024];
4037 #else
4038     struct timeval tv;
4039     fd_set input, output, except;
4040 #endif
4041     int i, r, nfds;
4042     int max_fd = 0;
4043
4044     yaz_log(log_details, "ZOOM_event(no=%d,cs=%p)", no, cs);
4045     for (i = 0; i<no; i++)
4046     {
4047         ZOOM_connection c = cs[i];
4048         ZOOM_Event event;
4049         if (c && (event = ZOOM_connection_get_event(c)))
4050         {
4051             ZOOM_Event_destroy(event);
4052             return i+1;
4053         }
4054     }
4055     for (i = 0; i<no; i++)
4056     {
4057         ZOOM_connection c = cs[i];
4058         if (c)
4059         {
4060             ZOOM_Event event;
4061             ZOOM_connection_exec_task(c);
4062             if ((event = ZOOM_connection_get_event(c)))
4063             {
4064                 ZOOM_Event_destroy(event);
4065                 return i+1;
4066             }
4067         }
4068     }
4069 #if HAVE_SYS_POLL_H
4070
4071 #else
4072     FD_ZERO(&input);
4073     FD_ZERO(&output);
4074     FD_ZERO(&except);
4075 #endif
4076     nfds = 0;
4077     for (i = 0; i<no; i++)
4078     {
4079         ZOOM_connection c = cs[i];
4080         int fd, mask;
4081         int this_timeout;
4082
4083         if (!c)
4084             continue;
4085         fd = z3950_connection_socket(c);
4086         mask = z3950_connection_mask(c);
4087
4088         if (fd == -1)
4089             continue;
4090         if (max_fd < fd)
4091             max_fd = fd;
4092
4093         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
4094         this_timeout = ZOOM_options_get_int(c->options, "timeout", -2);
4095         if (this_timeout != -2)
4096         {
4097             /* ensure the minimum timeout is used */
4098             if (!timeout_set)
4099                 timeout = this_timeout;
4100             else if (this_timeout != -1 && this_timeout < timeout)
4101                 timeout = this_timeout;
4102             timeout_set = 1;
4103         }
4104 #if HAVE_SYS_POLL_H
4105         if (mask)
4106         {
4107             short poll_events = 0;
4108
4109             if (mask & ZOOM_SELECT_READ)
4110                 poll_events += POLLIN;
4111             if (mask & ZOOM_SELECT_WRITE)
4112                 poll_events += POLLOUT;
4113             if (mask & ZOOM_SELECT_EXCEPT)
4114                 poll_events += POLLERR;
4115             pollfds[nfds].fd = fd;
4116             pollfds[nfds].events = poll_events;
4117             pollfds[nfds].revents = 0;
4118             poll_cs[nfds] = c;
4119             nfds++;
4120         }
4121 #else
4122         if (mask & ZOOM_SELECT_READ)
4123         {
4124             FD_SET(fd, &input);
4125             nfds++;
4126         }
4127         if (mask & ZOOM_SELECT_WRITE)
4128         {
4129             FD_SET(fd, &output);
4130             nfds++;
4131         }
4132         if (mask & ZOOM_SELECT_EXCEPT)
4133         {
4134             FD_SET(fd, &except);
4135             nfds++;
4136         }
4137 #endif
4138     }
4139     if (!nfds)
4140         return 0;
4141
4142 #if HAVE_SYS_POLL_H
4143     r = poll(pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
4144     for (i = 0; i<nfds; i++)
4145     {
4146         ZOOM_connection c = poll_cs[i];
4147         if (r && c->mask)
4148         {
4149             int mask = 0;
4150             if (pollfds[i].revents & POLLIN)
4151                 mask += ZOOM_SELECT_READ;
4152             if (pollfds[i].revents & POLLOUT)
4153                 mask += ZOOM_SELECT_WRITE;
4154             if (pollfds[i].revents & POLLERR)
4155                 mask += ZOOM_SELECT_EXCEPT;
4156             if (mask)
4157                 ZOOM_connection_do_io(c, mask);
4158         }
4159         else if (r == 0 && c->mask)
4160         {
4161             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4162             /* timeout and this connection was waiting */
4163             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4164             do_close(c);
4165             ZOOM_connection_put_event(c, event);
4166         }
4167     }
4168 #else
4169     tv.tv_sec = timeout;
4170     tv.tv_usec = 0;
4171     r = select(max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
4172     for (i = 0; i<no; i++)
4173     {
4174         ZOOM_connection c = cs[i];
4175         int fd, mask;
4176
4177         if (!c)
4178             continue;
4179         fd = z3950_connection_socket(c);
4180         mask = 0;
4181         if (r && c->mask)
4182         {
4183             /* no timeout and real socket */
4184             if (FD_ISSET(fd, &input))
4185                 mask += ZOOM_SELECT_READ;
4186             if (FD_ISSET(fd, &output))
4187                 mask += ZOOM_SELECT_WRITE;
4188             if (FD_ISSET(fd, &except))
4189                 mask += ZOOM_SELECT_EXCEPT;
4190             if (mask)
4191                 ZOOM_connection_do_io(c, mask);
4192         }
4193         if (r == 0 && c->mask)
4194         {
4195             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4196             /* timeout and this connection was waiting */
4197             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4198             do_close(c);
4199             ZOOM_connection_put_event(c, event);
4200         }
4201     }
4202 #endif
4203     for (i = 0; i<no; i++)
4204     {
4205         ZOOM_connection c = cs[i];
4206         ZOOM_Event event;
4207         if (c && (event = ZOOM_connection_get_event(c)))
4208         {
4209             ZOOM_Event_destroy(event);
4210             return i+1;
4211         }
4212     }
4213     return 0;
4214 }
4215
4216
4217 /*
4218  * Returns an xmalloc()d string containing RPN that corresponds to the
4219  * CQL passed in.  On error, sets the Connection object's error state
4220  * and returns a null pointer.
4221  * ### We could cache CQL parser and/or transformer in Connection.
4222  */
4223 static char *cql2pqf(ZOOM_connection c, const char *cql)
4224 {
4225     CQL_parser parser;
4226     int error;
4227     struct cql_node *node;
4228     const char *cqlfile;
4229     static cql_transform_t trans;
4230     char pqfbuf[512];
4231
4232     parser = cql_parser_create();
4233     if ((error = cql_parser_string(parser, cql)) != 0) {
4234         cql_parser_destroy(parser);
4235         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4236         return 0;
4237     }
4238
4239     node = cql_parser_result(parser);
4240     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4241
4242     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4243     if (cqlfile == 0) {
4244         cql_parser_destroy(parser);
4245         cql_node_destroy(node);
4246         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4247         return 0;
4248     }
4249
4250     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4251         char buf[512];
4252         cql_parser_destroy(parser);
4253         cql_node_destroy(node);
4254         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4255                 cqlfile, strerror(errno));
4256         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4257         return 0;
4258     }
4259
4260     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4261     cql_parser_destroy(parser);
4262     cql_node_destroy(node);
4263     if (error != 0) {
4264         char buf[512];
4265         const char *addinfo;
4266         error = cql_transform_error(trans, &addinfo);
4267         cql_transform_close(trans);
4268         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4269         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4270         return 0;
4271     }
4272
4273     cql_transform_close(trans);
4274     return xstrdup(pqfbuf);
4275 }
4276
4277 /*
4278  * Local variables:
4279  * c-basic-offset: 4
4280  * indent-tabs-mode: nil
4281  * End:
4282  * vim: shiftwidth=4 tabstop=8 expandtab
4283  */
4284