src/zoom-c.c

   1 /*
   2  * Copyright (C) 1995-2007, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.114 2007-02-21 12:53:01 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 #define TASK_FIX 1
  31
  32 static int log_api = 0;
  33 static int log_details = 0;
  34
  35 typedef enum {
  36     zoom_pending,
  37     zoom_complete
  38 } zoom_ret;
  39
  40 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
  41 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  42 static char *cql2pqf(ZOOM_connection c, const char *cql);
  43
  44
  45 /*
  46  * This wrapper is just for logging failed lookups.  It would be nicer
  47  * if it could cause failure when a lookup fails, but that's hard.
  48  */
  49 static Odr_oid *zoom_yaz_str_to_z3950oid(ZOOM_connection c,
  50                                          int oid_class, const char *str) {
  51     Odr_oid *res = yaz_str_to_z3950oid(c->odr_out, oid_class, str);
  52     if (res == 0)
  53         yaz_log(YLOG_WARN, "%p OID lookup (%d, '%s') failed",
  54                 c, (int) oid_class, str);
  55     return res;
  56 }
  57
  58
  59 static void initlog(void)
  60 {
  61     static int log_level_initialized = 0;
  62     if (!log_level_initialized)
  63     {
  64         log_api = yaz_log_module_level("zoom");
  65         log_details = yaz_log_module_level("zoomdetails");
  66         log_level_initialized = 1;
  67     }
  68 }
  69
  70 static ZOOM_Event ZOOM_Event_create(int kind)
  71 {
  72     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  73     event->kind = kind;
  74     event->next = 0;
  75     event->prev = 0;
  76     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
  77     return event;
  78 }
  79
  80 static void ZOOM_Event_destroy(ZOOM_Event event)
  81 {
  82     xfree(event);
  83 }
  84
  85 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
  86 {
  87     if (c->m_queue_back)
  88     {
  89         c->m_queue_back->prev = event;
  90         assert(c->m_queue_front);
  91     }
  92     else
  93     {
  94         assert(!c->m_queue_front);
  95         c->m_queue_front = event;
  96     }
  97     event->next = c->m_queue_back;
  98     event->prev = 0;
  99     c->m_queue_back = event;
 100 }
 101
 102 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 103 {
 104     ZOOM_Event event = c->m_queue_front;
 105     if (!event)
 106     {
 107         c->last_event = ZOOM_EVENT_NONE;
 108         return 0;
 109     }
 110     assert(c->m_queue_back);
 111     c->m_queue_front = event->prev;
 112     if (c->m_queue_front)
 113     {
 114         assert(c->m_queue_back);
 115         c->m_queue_front->next = 0;
 116     }
 117     else
 118         c->m_queue_back = 0;
 119     c->last_event = event->kind;
 120     return event;
 121 }
 122
 123 static void ZOOM_connection_remove_events(ZOOM_connection c)
 124 {
 125     ZOOM_Event event;
 126     while ((event = ZOOM_connection_get_event(c)))
 127         ZOOM_Event_destroy(event);
 128 }
 129
 130 ZOOM_API(int) ZOOM_connection_peek_event(ZOOM_connection c)
 131 {
 132     ZOOM_Event event = c->m_queue_front;
 133
 134     return event ? event->kind : ZOOM_EVENT_NONE;
 135 }
 136
 137 void ZOOM_connection_remove_tasks(ZOOM_connection c);
 138
 139 static void set_dset_error(ZOOM_connection c, int error,
 140                            const char *dset,
 141                            const char *addinfo, const char *addinfo2)
 142 {
 143     char *cp;
 144
 145     xfree(c->addinfo);
 146     c->addinfo = 0;
 147     c->error = error;
 148     if (!c->diagset || strcmp(dset, c->diagset))
 149     {
 150         xfree(c->diagset);
 151         c->diagset = xstrdup(dset);
 152         /* remove integer part from SRW diagset .. */
 153         if ((cp = strrchr(c->diagset, '/')))
 154             *cp = '\0';
 155     }
 156     if (addinfo && addinfo2)
 157     {
 158         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 159         strcpy(c->addinfo, addinfo);
 160         strcat(c->addinfo, addinfo2);
 161     }
 162     else if (addinfo)
 163         c->addinfo = xstrdup(addinfo);
 164     if (error != ZOOM_ERROR_NONE)
 165     {
 166         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 167                 c, c->host_port ? c->host_port : "<>", dset, error,
 168                 addinfo ? addinfo : "",
 169                 addinfo2 ? addinfo2 : "");
 170 #if TASK_FIX
 171         ZOOM_connection_remove_tasks(c);
 172 #endif
 173     }
 174 }
 175
 176 #if YAZ_HAVE_XML2
 177 static void set_HTTP_error(ZOOM_connection c, int error,
 178                            const char *addinfo, const char *addinfo2)
 179 {
 180     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 181 }
 182 #endif
 183
 184
 185 static void set_ZOOM_error(ZOOM_connection c, int error,
 186                            const char *addinfo)
 187 {
 188     set_dset_error(c, error, "ZOOM", addinfo, 0);
 189 }
 190
 191 static void clear_error(ZOOM_connection c)
 192 {
 193     /*
 194      * If an error is tied to an operation then it's ok to clear: for
 195      * example, a diagnostic returned from a search is cleared by a
 196      * subsequent search.  However, problems such as Connection Lost
 197      * or Init Refused are not cleared, because they are not
 198      * recoverable: doing another search doesn't help.
 199      */
 200
 201     ZOOM_connection_remove_events(c);
 202     switch (c->error)
 203     {
 204     case ZOOM_ERROR_CONNECT:
 205     case ZOOM_ERROR_MEMORY:
 206     case ZOOM_ERROR_DECODE:
 207     case ZOOM_ERROR_CONNECTION_LOST:
 208     case ZOOM_ERROR_INIT:
 209     case ZOOM_ERROR_INTERNAL:
 210     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 211         break;
 212     default:
 213         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 214     }
 215 }
 216
 217 void ZOOM_connection_show_task(ZOOM_task task)
 218 {
 219     switch(task->which)
 220     {
 221     case ZOOM_TASK_SEARCH:
 222         yaz_log(YLOG_LOG, "search p=%p", task);
 223         break;
 224     case ZOOM_TASK_RETRIEVE:
 225         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 226         break;
 227     case ZOOM_TASK_CONNECT:
 228         yaz_log(YLOG_LOG, "connect p=%p", task);
 229         break;
 230     case ZOOM_TASK_SCAN:
 231         yaz_log(YLOG_LOG, "scant p=%p", task);
 232         break;
 233     }
 234 }
 235
 236 void ZOOM_connection_show_tasks(ZOOM_connection c)
 237 {
 238     ZOOM_task task;
 239     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 240     for (task = c->tasks; task; task = task->next)
 241         ZOOM_connection_show_task(task);
 242 }
 243
 244 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 245 {
 246     ZOOM_task *taskp = &c->tasks;
 247     while (*taskp)
 248         taskp = &(*taskp)->next;
 249     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 250     (*taskp)->running = 0;
 251     (*taskp)->which = which;
 252     (*taskp)->next = 0;
 253     clear_error(c);
 254     return *taskp;
 255 }
 256
 257 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 258 {
 259     return c->tasks ? 0 : 1;
 260 }
 261
 262 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 263 {
 264     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 265
 266     task->next = c->tasks;
 267     c->tasks = task;
 268
 269     task->running = 0;
 270     task->which = which;
 271     clear_error(c);
 272     return task;
 273 }
 274
 275 void ZOOM_connection_remove_task(ZOOM_connection c)
 276 {
 277     ZOOM_task task = c->tasks;
 278
 279     if (task)
 280     {
 281         c->tasks = task->next;
 282         switch (task->which)
 283         {
 284         case ZOOM_TASK_SEARCH:
 285             ZOOM_resultset_destroy(task->u.search.resultset);
 286             xfree(task->u.search.syntax);
 287             xfree(task->u.search.elementSetName);
 288             break;
 289         case ZOOM_TASK_RETRIEVE:
 290             ZOOM_resultset_destroy(task->u.retrieve.resultset);
 291             xfree(task->u.retrieve.syntax);
 292             xfree(task->u.retrieve.elementSetName);
 293             break;
 294         case ZOOM_TASK_CONNECT:
 295             break;
 296         case ZOOM_TASK_SCAN:
 297             ZOOM_scanset_destroy(task->u.scan.scan);
 298             break;
 299         case ZOOM_TASK_PACKAGE:
 300             ZOOM_package_destroy(task->u.package);
 301             break;
 302         case ZOOM_TASK_SORT:
 303             ZOOM_resultset_destroy(task->u.sort.resultset);
 304             ZOOM_query_destroy(task->u.sort.q);
 305             break;
 306         default:
 307             assert(0);
 308         }
 309         xfree(task);
 310
 311         if (!c->tasks)
 312         {
 313             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 314             ZOOM_connection_put_event(c, event);
 315         }
 316     }
 317 }
 318
 319 static int ZOOM_connection_exec_task(ZOOM_connection c);
 320
 321 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 322 {
 323     while (c->tasks)
 324         ZOOM_connection_remove_task(c);
 325 }
 326
 327 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 328                                        const char *syntax,
 329                                        const char *elementSetName);
 330
 331 ZOOM_API(ZOOM_connection)
 332     ZOOM_connection_create(ZOOM_options options)
 333 {
 334     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 335
 336     initlog();
 337
 338     yaz_log(log_api, "%p ZOOM_connection_create", c);
 339
 340     c->proto = PROTO_Z3950;
 341     c->cs = 0;
 342     ZOOM_connection_set_mask(c, 0);
 343     c->reconnect_ok = 0;
 344     c->state = STATE_IDLE;
 345     c->addinfo = 0;
 346     c->diagset = 0;
 347     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 348     c->buf_in = 0;
 349     c->len_in = 0;
 350     c->buf_out = 0;
 351     c->len_out = 0;
 352     c->resultsets = 0;
 353
 354     c->options = ZOOM_options_create_with_parent(options);
 355
 356     c->host_port = 0;
 357     c->path = 0;
 358     c->proxy = 0;
 359
 360     c->charset = c->lang = 0;
 361
 362     c->cookie_out = 0;
 363     c->cookie_in = 0;
 364     c->client_IP = 0;
 365     c->tasks = 0;
 366
 367     c->odr_in = odr_createmem(ODR_DECODE);
 368     c->odr_out = odr_createmem(ODR_ENCODE);
 369
 370     c->async = 0;
 371     c->support_named_resultsets = 0;
 372     c->last_event = ZOOM_EVENT_NONE;
 373
 374     c->m_queue_front = 0;
 375     c->m_queue_back = 0;
 376     return c;
 377 }
 378
 379
 380 /* set database names. Take local databases (if set); otherwise
 381    take databases given in ZURL (if set); otherwise use Default */
 382 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 383                                 int *num, ODR odr)
 384 {
 385     char **databaseNames;
 386     const char *cp = ZOOM_options_get(options, "databaseName");
 387
 388     if ((!cp || !*cp) && con->host_port)
 389     {
 390         if (strncmp(con->host_port, "unix:", 5) == 0)
 391             cp = strchr(con->host_port+5, ':');
 392         else
 393             cp = strchr(con->host_port, '/');
 394         if (cp)
 395             cp++;
 396     }
 397     if (!cp)
 398         cp = "Default";
 399     nmem_strsplit(odr->mem, "+", cp,  &databaseNames, num);
 400     return databaseNames;
 401 }
 402
 403 ZOOM_API(ZOOM_connection)
 404     ZOOM_connection_new(const char *host, int portnum)
 405 {
 406     ZOOM_connection c = ZOOM_connection_create(0);
 407
 408     ZOOM_connection_connect(c, host, portnum);
 409     return c;
 410 }
 411
 412 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 413 {
 414     if (!s || !*s)
 415         return zoom_sru_soap;
 416     if (!yaz_matchstr(s, "soap"))
 417         return zoom_sru_soap;
 418     else if (!yaz_matchstr(s, "get"))
 419         return zoom_sru_get;
 420     else if (!yaz_matchstr(s, "post"))
 421         return zoom_sru_post;
 422     return zoom_sru_error;
 423 }
 424
 425 ZOOM_API(void)
 426     ZOOM_connection_connect(ZOOM_connection c,
 427                             const char *host, int portnum)
 428 {
 429     const char *val;
 430     ZOOM_task task;
 431
 432     initlog();
 433
 434     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 435             c, host, portnum);
 436
 437     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 438     ZOOM_connection_remove_tasks(c);
 439
 440     if (c->cs)
 441     {
 442         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 443         c->reconnect_ok = 1;
 444         return;
 445     }
 446     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 447     xfree(c->proxy);
 448     val = ZOOM_options_get(c->options, "proxy");
 449     if (val && *val)
 450     {
 451         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 452         c->proxy = xstrdup(val);
 453     }
 454     else
 455         c->proxy = 0;
 456
 457     xfree(c->charset);
 458     val = ZOOM_options_get(c->options, "charset");
 459     if (val && *val)
 460     {
 461         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 462         c->charset = xstrdup(val);
 463     }
 464     else
 465         c->charset = 0;
 466
 467     xfree(c->lang);
 468     val = ZOOM_options_get(c->options, "lang");
 469     if (val && *val)
 470     {
 471         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 472         c->lang = xstrdup(val);
 473     }
 474     else
 475         c->lang = 0;
 476
 477     xfree(c->host_port);
 478     if (portnum)
 479     {
 480         char hostn[128];
 481         sprintf(hostn, "%.80s:%d", host, portnum);
 482         c->host_port = xstrdup(hostn);
 483     }
 484     else
 485         c->host_port = xstrdup(host);
 486
 487     {
 488         /*
 489          * If the "<scheme>:" part of the host string is preceded by one
 490          * or more comma-separated <name>=<value> pairs, these are taken
 491          * to be options to be set on the connection object.  Among other
 492          * applications, this facility can be used to embed authentication
 493          * in a host string:
 494          *          user=admin,password=secret,tcp:localhost:9999
 495          */
 496         char *remainder = c->host_port;
 497         char *pcolon = strchr(remainder, ':');
 498         char *pcomma;
 499         char *pequals;
 500         while ((pcomma = strchr(remainder, ',')) != 0 &&
 501                (pcolon == 0 || pcomma < pcolon)) {
 502             *pcomma = '\0';
 503             if ((pequals = strchr(remainder, '=')) != 0) {
 504                 *pequals = '\0';
 505                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 506                 ZOOM_connection_option_set(c, remainder, pequals+1);
 507             }
 508             remainder = pcomma+1;
 509         }
 510
 511         if (remainder != c->host_port) {
 512             xfree(c->host_port);
 513             c->host_port = xstrdup(remainder);
 514             /*printf("# reset hp='%s'\n", remainder);*/
 515         }
 516     }
 517
 518     val = ZOOM_options_get(c->options, "sru");
 519     c->sru_mode = get_sru_mode_from_string(val);
 520
 521     ZOOM_options_set(c->options, "host", c->host_port);
 522
 523     val = ZOOM_options_get(c->options, "cookie");
 524     if (val && *val)
 525     {
 526         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 527         c->cookie_out = xstrdup(val);
 528     }
 529
 530     val = ZOOM_options_get(c->options, "clientIP");
 531     if (val && *val)
 532     {
 533         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 534                 c, val);
 535         c->client_IP = xstrdup(val);
 536     }
 537
 538     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 539     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 540
 541     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 542
 543     if (!c->async)
 544     {
 545         while (ZOOM_event(1, &c))
 546             ;
 547     }
 548 }
 549
 550 ZOOM_API(ZOOM_query)
 551     ZOOM_query_create(void)
 552 {
 553     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 554
 555     yaz_log(log_details, "%p ZOOM_query_create", s);
 556     s->refcount = 1;
 557     s->z_query = 0;
 558     s->sort_spec = 0;
 559     s->odr = odr_createmem(ODR_ENCODE);
 560     s->query_string = 0;
 561
 562     return s;
 563 }
 564
 565 ZOOM_API(void)
 566     ZOOM_query_destroy(ZOOM_query s)
 567 {
 568     if (!s)
 569         return;
 570
 571     (s->refcount)--;
 572     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 573     if (s->refcount == 0)
 574     {
 575         odr_destroy(s->odr);
 576         xfree(s);
 577     }
 578 }
 579
 580 ZOOM_API(int)
 581     ZOOM_query_prefix(ZOOM_query s, const char *str)
 582 {
 583     s->query_string = odr_strdup(s->odr, str);
 584     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 585     s->z_query->which = Z_Query_type_1;
 586     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 587     if (!s->z_query->u.type_1)
 588     {
 589         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 590         s->z_query = 0;
 591         return -1;
 592     }
 593     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 594     return 0;
 595 }
 596
 597 ZOOM_API(int)
 598     ZOOM_query_cql(ZOOM_query s, const char *str)
 599 {
 600     Z_External *ext;
 601
 602     s->query_string = odr_strdup(s->odr, str);
 603
 604     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 605     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 606     ext->indirect_reference = 0;
 607     ext->descriptor = 0;
 608     ext->which = Z_External_CQL;
 609     ext->u.cql = s->query_string;
 610
 611     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 612     s->z_query->which = Z_Query_type_104;
 613     s->z_query->u.type_104 =  ext;
 614
 615     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 616
 617     return 0;
 618 }
 619
 620 /*
 621  * Translate the CQL string client-side into RPN which is passed to
 622  * the server.  This is useful for server's that don't themselves
 623  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 624  * only as a place to stash diagnostics if compilation fails; if this
 625  * information is not needed, a null pointer may be used.
 626  */
 627 ZOOM_API(int)
 628     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 629 {
 630     char *rpn;
 631     int ret;
 632     ZOOM_connection freeme = 0;
 633
 634     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 635     if (conn == 0)
 636         conn = freeme = ZOOM_connection_create(0);
 637
 638     rpn = cql2pqf(conn, str);
 639     if (freeme != 0)
 640         ZOOM_connection_destroy(freeme);
 641     if (rpn == 0)
 642         return -1;
 643
 644     ret = ZOOM_query_prefix(s, rpn);
 645     xfree(rpn);
 646     return ret;
 647 }
 648
 649 /*
 650  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 651  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 652  * to the server, as the YAZ GFS doesn't know how to handle this.
 653  */
 654 ZOOM_API(int)
 655     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 656                        int *ccl_error, const char **error_string,
 657                        int *error_pos)
 658 {
 659     int ret;
 660     struct ccl_rpn_node *rpn;
 661     CCL_bibset bibset = ccl_qual_mk();
 662
 663     if (config)
 664         ccl_qual_buf(bibset, config);
 665
 666     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 667     if (!rpn)
 668     {
 669         *error_string = ccl_err_msg(*ccl_error);
 670         ret = -1;
 671     }
 672     else
 673     {
 674         WRBUF wr = wrbuf_alloc();
 675         ccl_pquery(wr, rpn);
 676         ccl_rpn_delete(rpn);
 677         ret = ZOOM_query_prefix(s, wrbuf_buf(wr));
 678         wrbuf_free(wr, 1);
 679     }
 680     ccl_qual_rm(&bibset);
 681     return ret;
 682 }
 683
 684 ZOOM_API(int)
 685     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 686 {
 687     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 688     if (!s->sort_spec)
 689     {
 690         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 691                 s, criteria);
 692         return -1;
 693     }
 694     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 695     return 0;
 696 }
 697
 698 static zoom_ret do_write(ZOOM_connection c);
 699
 700 ZOOM_API(void)
 701     ZOOM_connection_destroy(ZOOM_connection c)
 702 {
 703     ZOOM_resultset r;
 704     if (!c)
 705         return;
 706     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 707     if (c->cs)
 708         cs_close(c->cs);
 709     for (r = c->resultsets; r; r = r->next)
 710         r->connection = 0;
 711
 712     xfree(c->buf_in);
 713     xfree(c->addinfo);
 714     xfree(c->diagset);
 715     odr_destroy(c->odr_in);
 716     odr_destroy(c->odr_out);
 717     ZOOM_options_destroy(c->options);
 718     ZOOM_connection_remove_tasks(c);
 719     ZOOM_connection_remove_events(c);
 720     xfree(c->host_port);
 721     xfree(c->path);
 722     xfree(c->proxy);
 723     xfree(c->charset);
 724     xfree(c->lang);
 725     xfree(c->cookie_out);
 726     xfree(c->cookie_in);
 727     xfree(c->client_IP);
 728     xfree(c);
 729 }
 730
 731 void ZOOM_resultset_addref(ZOOM_resultset r)
 732 {
 733     if (r)
 734     {
 735         (r->refcount)++;
 736         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 737                 r, r->refcount);
 738     }
 739 }
 740
 741 ZOOM_resultset ZOOM_resultset_create(void)
 742 {
 743     int i;
 744     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 745
 746     initlog();
 747
 748     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 749     r->refcount = 1;
 750     r->size = 0;
 751     r->odr = odr_createmem(ODR_ENCODE);
 752     r->piggyback = 1;
 753     r->setname = 0;
 754     r->schema = 0;
 755     r->step = 0;
 756     for (i = 0; i<RECORD_HASH_SIZE; i++)
 757         r->record_hash[i] = 0;
 758     r->r_sort_spec = 0;
 759     r->query = 0;
 760     r->connection = 0;
 761     r->next = 0;
 762     r->databaseNames = 0;
 763     r->num_databaseNames = 0;
 764     return r;
 765 }
 766
 767 ZOOM_API(ZOOM_resultset)
 768     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 769 {
 770     ZOOM_resultset r;
 771     ZOOM_query s = ZOOM_query_create();
 772
 773     ZOOM_query_prefix(s, q);
 774
 775     r = ZOOM_connection_search(c, s);
 776     ZOOM_query_destroy(s);
 777     return r;
 778 }
 779
 780 ZOOM_API(ZOOM_resultset)
 781     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 782 {
 783     ZOOM_resultset r = ZOOM_resultset_create();
 784     ZOOM_task task;
 785     const char *cp;
 786     int start, count;
 787     const char *syntax, *elementSetName;
 788
 789     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 790     r->r_sort_spec = q->sort_spec;
 791     r->query = q;
 792
 793     r->options = ZOOM_options_create_with_parent(c->options);
 794
 795     start = ZOOM_options_get_int(r->options, "start", 0);
 796     count = ZOOM_options_get_int(r->options, "count", 0);
 797     {
 798         /* If "presentChunk" is defined use that; otherwise "step" */
 799         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 800         r->step = ZOOM_options_get_int(r->options,
 801                                        (cp != 0 ? "presentChunk": "step"), 0);
 802     }
 803     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 804     cp = ZOOM_options_get(r->options, "setname");
 805     if (cp)
 806         r->setname = xstrdup(cp);
 807     cp = ZOOM_options_get(r->options, "schema");
 808     if (cp)
 809         r->schema = xstrdup(cp);
 810
 811     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 812                                          r->odr);
 813
 814     r->connection = c;
 815
 816     r->next = c->resultsets;
 817     c->resultsets = r;
 818
 819     if (c->host_port && c->proto == PROTO_HTTP)
 820     {
 821         if (!c->cs)
 822         {
 823             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 824             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 825         }
 826         else
 827         {
 828             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 829             c->reconnect_ok = 1;
 830         }
 831     }
 832
 833     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 834     task->u.search.resultset = r;
 835     task->u.search.start = start;
 836     task->u.search.count = count;
 837
 838     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 839     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 840     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 841     task->u.search.elementSetName = elementSetName
 842         ? xstrdup(elementSetName) : 0;
 843
 844     ZOOM_resultset_addref(r);
 845
 846     (q->refcount)++;
 847
 848     if (!c->async)
 849     {
 850         while (ZOOM_event(1, &c))
 851             ;
 852     }
 853     return r;
 854 }
 855
 856 /*
 857  * This is the old result-set sorting API, which is maintained only
 858  * for the sake of binary compatibility.  There is no reason ever to
 859  * use this rather than ZOOM_resultset_sort1().
 860  */
 861 ZOOM_API(void)
 862     ZOOM_resultset_sort(ZOOM_resultset r,
 863                         const char *sort_type, const char *sort_spec)
 864 {
 865     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 866 }
 867
 868 ZOOM_API(int)
 869     ZOOM_resultset_sort1(ZOOM_resultset r,
 870                          const char *sort_type, const char *sort_spec)
 871 {
 872     ZOOM_connection c = r->connection;
 873     ZOOM_task task;
 874     ZOOM_query newq;
 875
 876     newq = ZOOM_query_create();
 877     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 878         return -1;
 879
 880     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 881             r, r, sort_type, sort_spec);
 882     if (!c)
 883         return 0;
 884
 885     if (c->host_port && c->proto == PROTO_HTTP)
 886     {
 887         if (!c->cs)
 888         {
 889             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 890             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 891         }
 892         else
 893         {
 894             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 895                     r);
 896             c->reconnect_ok = 1;
 897         }
 898     }
 899
 900     ZOOM_resultset_cache_reset(r);
 901     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 902     task->u.sort.resultset = r;
 903     task->u.sort.q = newq;
 904
 905     ZOOM_resultset_addref(r);
 906
 907     if (!c->async)
 908     {
 909         while (ZOOM_event(1, &c))
 910             ;
 911     }
 912
 913     return 0;
 914 }
 915
 916 ZOOM_API(void)
 917     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 918 {
 919     int i;
 920     for (i = 0; i<RECORD_HASH_SIZE; i++)
 921     {
 922         ZOOM_record_cache rc;
 923         for (rc = r->record_hash[i]; rc; rc = rc->next)
 924         {
 925             if (rc->rec.wrbuf_marc)
 926                 wrbuf_free(rc->rec.wrbuf_marc, 1);
 927             if (rc->rec.wrbuf_iconv)
 928                 wrbuf_free(rc->rec.wrbuf_iconv, 1);
 929             if (rc->rec.wrbuf_opac)
 930                 wrbuf_free(rc->rec.wrbuf_opac, 1);
 931         }
 932         r->record_hash[i] = 0;
 933     }
 934 }
 935
 936 ZOOM_API(void)
 937     ZOOM_resultset_destroy(ZOOM_resultset r)
 938 {
 939     if (!r)
 940         return;
 941     (r->refcount)--;
 942     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 943             r, r, r->refcount);
 944     if (r->refcount == 0)
 945     {
 946         ZOOM_resultset_cache_reset(r);
 947
 948         if (r->connection)
 949         {
 950             /* remove ourselves from the resultsets in connection */
 951             ZOOM_resultset *rp = &r->connection->resultsets;
 952             while (1)
 953             {
 954                 assert(*rp);   /* we must be in this list!! */
 955                 if (*rp == r)
 956                 {   /* OK, we're here - take us out of it */
 957                     *rp = (*rp)->next;
 958                     break;
 959                 }
 960                 rp = &(*rp)->next;
 961             }
 962         }
 963         ZOOM_query_destroy(r->query);
 964         ZOOM_options_destroy(r->options);
 965         odr_destroy(r->odr);
 966         xfree(r->setname);
 967         xfree(r->schema);
 968         xfree(r);
 969     }
 970 }
 971
 972 ZOOM_API(size_t)
 973     ZOOM_resultset_size(ZOOM_resultset r)
 974 {
 975     yaz_log(log_details, "ZOOM_resultset_size r=%p count=%d",
 976             r, r->size);
 977     return r->size;
 978 }
 979
 980 static void do_close(ZOOM_connection c)
 981 {
 982     if (c->cs)
 983         cs_close(c->cs);
 984     c->cs = 0;
 985     ZOOM_connection_set_mask(c, 0);
 986     c->state = STATE_IDLE;
 987 }
 988
 989 static int ZOOM_test_reconnect(ZOOM_connection c)
 990 {
 991     if (!c->reconnect_ok)
 992         return 0;
 993     do_close(c);
 994     c->reconnect_ok = 0;
 995     c->tasks->running = 0;
 996     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
 997     return 1;
 998 }
 999
1000 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
1001                                     int force_sync, int start, int count)
1002 {
1003     ZOOM_task task;
1004     ZOOM_connection c;
1005     const char *cp;
1006     const char *syntax, *elementSetName;
1007
1008     if (!r)
1009         return;
1010     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
1011             " count=%d", r, force_sync, start, count);
1012     c = r->connection;
1013     if (!c)
1014         return;
1015
1016     if (c->host_port && c->proto == PROTO_HTTP)
1017     {
1018         if (!c->cs)
1019         {
1020             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
1021             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1022         }
1023         else
1024         {
1025             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1026                     "reconnect", r);
1027             c->reconnect_ok = 1;
1028         }
1029     }
1030     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1031     task->u.retrieve.resultset = r;
1032     task->u.retrieve.start = start;
1033     task->u.retrieve.count = count;
1034
1035     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1036     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1037     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1038     task->u.retrieve.elementSetName = elementSetName
1039         ? xstrdup(elementSetName) : 0;
1040
1041     cp = ZOOM_options_get(r->options, "schema");
1042     if (cp)
1043     {
1044         if (!r->schema || strcmp(r->schema, cp))
1045         {
1046             xfree(r->schema);
1047             r->schema = xstrdup(cp);
1048         }
1049     }
1050
1051     ZOOM_resultset_addref(r);
1052
1053     if (!r->connection->async || force_sync)
1054         while (r->connection && ZOOM_event(1, &r->connection))
1055             ;
1056 }
1057
1058 ZOOM_API(void)
1059     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1060                            size_t start, size_t count)
1061 {
1062     int force_present = 0;
1063
1064     if (!r)
1065         return ;
1066     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1067             r, r, (long) start, (long) count);
1068     if (count && recs)
1069         force_present = 1;
1070     ZOOM_resultset_retrieve(r, force_present, start, count);
1071     if (force_present)
1072     {
1073         size_t i;
1074         for (i = 0; i< count; i++)
1075             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1076     }
1077 }
1078
1079 static void get_cert(ZOOM_connection c)
1080 {
1081     char *cert_buf;
1082     int cert_len;
1083
1084     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1085     {
1086         ZOOM_connection_option_setl(c, "sslPeerCert",
1087                                     cert_buf, cert_len);
1088         xfree(cert_buf);
1089     }
1090 }
1091
1092 static zoom_ret do_connect(ZOOM_connection c)
1093 {
1094     void *add;
1095     const char *effective_host;
1096
1097     if (c->proxy)
1098         effective_host = c->proxy;
1099     else
1100         effective_host = c->host_port;
1101
1102     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1103
1104     if (c->cs)
1105         cs_close(c->cs);
1106     c->cs = cs_create_host(effective_host, 0, &add);
1107
1108     if (c->cs && c->cs->protocol == PROTO_HTTP)
1109     {
1110 #if YAZ_HAVE_XML2
1111         const char *path = 0;
1112
1113         c->proto = PROTO_HTTP;
1114         cs_get_host_args(c->host_port, &path);
1115         xfree(c->path);
1116         c->path = (char*) xmalloc(strlen(path)+2);
1117         c->path[0] = '/';
1118         strcpy(c->path+1, path);
1119 #else
1120         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1121         do_close(c);
1122         return zoom_complete;
1123 #endif
1124     }
1125     if (c->cs)
1126     {
1127         int ret = cs_connect(c->cs, add);
1128         if (ret == 0)
1129         {
1130             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1131             ZOOM_connection_put_event(c, event);
1132             get_cert(c);
1133             if (c->proto == PROTO_Z3950)
1134                 ZOOM_connection_send_init(c);
1135             else
1136             {
1137                 /* no init request for SRW .. */
1138                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1139                 ZOOM_connection_remove_task(c);
1140                 ZOOM_connection_set_mask(c, 0);
1141                 ZOOM_connection_exec_task(c);
1142             }
1143             c->state = STATE_ESTABLISHED;
1144             return zoom_pending;
1145         }
1146         else if (ret > 0)
1147         {
1148             int mask = ZOOM_SELECT_EXCEPT;
1149             if (c->cs->io_pending & CS_WANT_WRITE)
1150                 mask += ZOOM_SELECT_WRITE;
1151             if (c->cs->io_pending & CS_WANT_READ)
1152                 mask += ZOOM_SELECT_READ;
1153             ZOOM_connection_set_mask(c, mask);
1154             c->state = STATE_CONNECTING;
1155             return zoom_pending;
1156         }
1157     }
1158     c->state = STATE_IDLE;
1159     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1160     return zoom_complete;
1161 }
1162
1163 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1164 {
1165     int i;
1166     for (i = 0; i<200; i++)
1167     {
1168         size_t len;
1169         Z_OtherInformation **oi;
1170         char buf[80];
1171         const char *val;
1172         const char *cp;
1173         int oidval;
1174
1175         sprintf(buf, "otherInfo%d", i);
1176         val = ZOOM_options_get(c->options, buf);
1177         if (!val)
1178             break;
1179         cp = strchr(val, ':');
1180         if (!cp)
1181             continue;
1182         len = cp - val;
1183         if (len >= sizeof(buf))
1184             len = sizeof(buf)-1;
1185         memcpy(buf, val, len);
1186         buf[len] = '\0';
1187         oidval = oid_getvalbyname(buf);
1188         if (oidval == VAL_NONE)
1189             continue;
1190
1191         yaz_oi_APDU(a, &oi);
1192         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1193     }
1194 }
1195
1196 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1197 {
1198     assert(a);
1199     if (c->cookie_out)
1200     {
1201         Z_OtherInformation **oi;
1202         yaz_oi_APDU(a, &oi);
1203         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1204     }
1205     if (c->client_IP)
1206     {
1207         Z_OtherInformation **oi;
1208         yaz_oi_APDU(a, &oi);
1209         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1210     }
1211     otherInfo_attach(c, a, out);
1212     if (!z_APDU(out, &a, 0, 0))
1213     {
1214         FILE *outf = fopen("/tmp/apdu.txt", "a");
1215         if (a && outf)
1216         {
1217             ODR odr_pr = odr_createmem(ODR_PRINT);
1218             fprintf(outf, "a=%p\n", a);
1219             odr_setprint(odr_pr, outf);
1220             z_APDU(odr_pr, &a, 0, 0);
1221             odr_destroy(odr_pr);
1222         }
1223         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1224         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1225         odr_reset(out);
1226         return -1;
1227     }
1228     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1229     return 0;
1230 }
1231
1232 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1233 {
1234     ZOOM_Event event;
1235     assert(a);
1236     if (encode_APDU(c, a, c->odr_out))
1237         return zoom_complete;
1238     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1239     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1240     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1241     ZOOM_connection_put_event(c, event);
1242     odr_reset(c->odr_out);
1243     return do_write(c);
1244 }
1245
1246 /* returns 1 if PDU was sent OK (still pending )
1247    0 if PDU was not sent OK (nothing to wait for)
1248 */
1249
1250 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1251 {
1252     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1253     Z_InitRequest *ireq = apdu->u.initRequest;
1254     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1255         odr_malloc(c->odr_out, sizeof(*auth));
1256     const char *auth_groupId = ZOOM_options_get(c->options, "group");
1257     const char *auth_userId = ZOOM_options_get(c->options, "user");
1258     const char *auth_password = ZOOM_options_get(c->options, "password");
1259     char *version;
1260
1261     /* support the pass for backwards compatibility */
1262     if (!auth_password)
1263         auth_password = ZOOM_options_get(c->options, "pass");
1264
1265     ODR_MASK_SET(ireq->options, Z_Options_search);
1266     ODR_MASK_SET(ireq->options, Z_Options_present);
1267     ODR_MASK_SET(ireq->options, Z_Options_scan);
1268     ODR_MASK_SET(ireq->options, Z_Options_sort);
1269     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1270     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1271
1272     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1273     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1274     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1275
1276     /* Index Data's Z39.50 Implementor Id is 81 */
1277     ireq->implementationId =
1278         odr_prepend(c->odr_out,
1279                     ZOOM_options_get(c->options, "implementationId"),
1280                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1281
1282     ireq->implementationName =
1283         odr_prepend(c->odr_out,
1284                     ZOOM_options_get(c->options, "implementationName"),
1285                     odr_prepend(c->odr_out, "ZOOM-C",
1286                                 ireq->implementationName));
1287
1288     version = odr_strdup(c->odr_out, "$Revision: 1.114 $");
1289     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1290         version[strlen(version)-2] = '\0';
1291     ireq->implementationVersion =
1292         odr_prepend(c->odr_out,
1293                     ZOOM_options_get(c->options, "implementationVersion"),
1294                     odr_prepend(c->odr_out, &version[11],
1295                                 ireq->implementationVersion));
1296
1297     *ireq->maximumRecordSize =
1298         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
1299     *ireq->preferredMessageSize =
1300         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
1301
1302     if (auth_groupId || auth_password)
1303     {
1304         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1305         int i = 0;
1306         pass->groupId = 0;
1307         if (auth_groupId && *auth_groupId)
1308         {
1309             pass->groupId = (char *)
1310                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1311             strcpy(pass->groupId, auth_groupId);
1312             i++;
1313         }
1314         pass->userId = 0;
1315         if (auth_userId && *auth_userId)
1316         {
1317             pass->userId = (char *)
1318                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1319             strcpy(pass->userId, auth_userId);
1320             i++;
1321         }
1322         pass->password = 0;
1323         if (auth_password && *auth_password)
1324         {
1325             pass->password = (char *)
1326                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1327             strcpy(pass->password, auth_password);
1328             i++;
1329         }
1330         if (i)
1331         {
1332             auth->which = Z_IdAuthentication_idPass;
1333             auth->u.idPass = pass;
1334             ireq->idAuthentication = auth;
1335         }
1336     }
1337     else if (auth_userId)
1338     {
1339         auth->which = Z_IdAuthentication_open;
1340         auth->u.open = (char *)
1341             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1342         strcpy(auth->u.open, auth_userId);
1343         ireq->idAuthentication = auth;
1344     }
1345     if (c->proxy)
1346         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1347                                  VAL_PROXY, 1, c->host_port);
1348     if (c->charset || c->lang)
1349     {
1350         Z_OtherInformation **oi;
1351         Z_OtherInformationUnit *oi_unit;
1352
1353         yaz_oi_APDU(apdu, &oi);
1354
1355         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1356         {
1357             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1358             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1359             oi_unit->information.externallyDefinedInfo =
1360                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1361                                               c->charset, c->lang, 1);
1362         }
1363     }
1364     assert(apdu);
1365     return send_APDU(c, apdu);
1366 }
1367
1368 #if YAZ_HAVE_XML2
1369 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1370 {
1371     Z_GDU *gdu;
1372     ZOOM_Event event;
1373
1374     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1375
1376     if (c->sru_mode == zoom_sru_get)
1377     {
1378         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1379     }
1380     else if (c->sru_mode == zoom_sru_post)
1381     {
1382         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1383     }
1384     else if (c->sru_mode == zoom_sru_soap)
1385     {
1386         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1387     }
1388     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1389         return zoom_complete;
1390     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1391
1392     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1393     ZOOM_connection_put_event(c, event);
1394     odr_reset(c->odr_out);
1395     return do_write(c);
1396 }
1397 #endif
1398
1399 #if YAZ_HAVE_XML2
1400 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1401 {
1402     int i;
1403     int *start, *count;
1404     ZOOM_resultset resultset = 0;
1405     Z_SRW_PDU *sr = 0;
1406     const char *option_val = 0;
1407
1408     if (c->error)                  /* don't continue on error */
1409         return zoom_complete;
1410     assert(c->tasks);
1411     switch(c->tasks->which)
1412     {
1413     case ZOOM_TASK_SEARCH:
1414         resultset = c->tasks->u.search.resultset;
1415         resultset->setname = xstrdup("default");
1416         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1417         start = &c->tasks->u.search.start;
1418         count = &c->tasks->u.search.count;
1419         break;
1420     case ZOOM_TASK_RETRIEVE:
1421         resultset = c->tasks->u.retrieve.resultset;
1422
1423         start = &c->tasks->u.retrieve.start;
1424         count = &c->tasks->u.retrieve.count;
1425
1426         if (*start >= resultset->size)
1427             return zoom_complete;
1428         if (*start + *count > resultset->size)
1429             *count = resultset->size - *start;
1430
1431         for (i = 0; i < *count; i++)
1432         {
1433             ZOOM_record rec =
1434                 record_cache_lookup(resultset, i + *start,
1435                                     c->tasks->u.retrieve.syntax,
1436                                     c->tasks->u.retrieve.elementSetName);
1437             if (!rec)
1438                 break;
1439             else
1440             {
1441                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1442                 ZOOM_connection_put_event(c, event);
1443             }
1444         }
1445         *start += i;
1446         *count -= i;
1447
1448         if (*count == 0)
1449             return zoom_complete;
1450         break;
1451     default:
1452         return zoom_complete;
1453     }
1454     assert(resultset->query);
1455
1456     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1457
1458     if (resultset->query->z_query->which == Z_Query_type_104
1459         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1460     {
1461         sr->u.request->query_type = Z_SRW_query_type_cql;
1462         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1463     }
1464     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1465              resultset->query->z_query->u.type_1)
1466     {
1467         sr->u.request->query_type = Z_SRW_query_type_pqf;
1468         sr->u.request->query.pqf = resultset->query->query_string;
1469     }
1470     else
1471     {
1472         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1473         return zoom_complete;
1474     }
1475     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1476     sr->u.request->maximumRecords = odr_intdup(
1477         c->odr_out, resultset->step>0 ? resultset->step : *count);
1478     sr->u.request->recordSchema = resultset->schema;
1479
1480     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1481     if (option_val)
1482         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1483
1484     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1485     if (option_val)
1486         sr->extra_args = odr_strdup(c->odr_out, option_val);
1487     return send_srw(c, sr);
1488 }
1489 #else
1490 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1491 {
1492     return zoom_complete;
1493 }
1494 #endif
1495
1496 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1497 {
1498     ZOOM_resultset r;
1499     int lslb, ssub, mspn;
1500     const char *syntax;
1501     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1502     Z_SearchRequest *search_req = apdu->u.searchRequest;
1503     const char *elementSetName;
1504     const char *smallSetElementSetName;
1505     const char *mediumSetElementSetName;
1506
1507     assert(c->tasks);
1508     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1509
1510     r = c->tasks->u.search.resultset;
1511
1512     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1513
1514     elementSetName =
1515         ZOOM_options_get(r->options, "elementSetName");
1516     smallSetElementSetName  =
1517         ZOOM_options_get(r->options, "smallSetElementSetName");
1518     mediumSetElementSetName =
1519         ZOOM_options_get(r->options, "mediumSetElementSetName");
1520
1521     if (!smallSetElementSetName)
1522         smallSetElementSetName = elementSetName;
1523
1524     if (!mediumSetElementSetName)
1525         mediumSetElementSetName = elementSetName;
1526
1527     assert(r);
1528     assert(r->query);
1529
1530     /* prepare query for the search request */
1531     search_req->query = r->query->z_query;
1532     if (!search_req->query)
1533     {
1534         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1535         return zoom_complete;
1536     }
1537
1538     search_req->databaseNames = r->databaseNames;
1539     search_req->num_databaseNames = r->num_databaseNames;
1540
1541     /* get syntax (no need to provide unless piggyback is in effect) */
1542     syntax = c->tasks->u.search.syntax;
1543
1544     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1545     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1546     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1547     if (lslb != -1 && ssub != -1 && mspn != -1)
1548     {
1549         /* So're a Z39.50 expert? Let's hope you don't do sort */
1550         *search_req->largeSetLowerBound = lslb;
1551         *search_req->smallSetUpperBound = ssub;
1552         *search_req->mediumSetPresentNumber = mspn;
1553     }
1554     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1555              && r->piggyback && !r->r_sort_spec && !r->schema)
1556     {
1557         /* Regular piggyback - do it unless we're going to do sort */
1558         *search_req->largeSetLowerBound = 2000000000;
1559         *search_req->smallSetUpperBound = 1;
1560         *search_req->mediumSetPresentNumber =
1561             r->step>0 ? r->step : c->tasks->u.search.count;
1562     }
1563     else
1564     {
1565         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1566         smallSetElementSetName = 0;
1567         mediumSetElementSetName = 0;
1568         syntax = 0;
1569     }
1570     if (smallSetElementSetName && *smallSetElementSetName)
1571     {
1572         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1573             odr_malloc(c->odr_out, sizeof(*esn));
1574
1575         esn->which = Z_ElementSetNames_generic;
1576         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1577         search_req->smallSetElementSetNames = esn;
1578     }
1579     if (mediumSetElementSetName && *mediumSetElementSetName)
1580     {
1581         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1582             odr_malloc(c->odr_out, sizeof(*esn));
1583
1584         esn->which = Z_ElementSetNames_generic;
1585         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1586         search_req->mediumSetElementSetNames = esn;
1587     }
1588     if (syntax)
1589         search_req->preferredRecordSyntax =
1590             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1591
1592     if (!r->setname)
1593     {
1594         if (c->support_named_resultsets)
1595         {
1596             char setname[14];
1597             int ord;
1598             /* find the lowest unused ordinal so that we re-use
1599                result sets on the server. */
1600             for (ord = 1; ; ord++)
1601             {
1602                 ZOOM_resultset rp;
1603                 sprintf(setname, "%d", ord);
1604                 for (rp = c->resultsets; rp; rp = rp->next)
1605                     if (rp->setname && !strcmp(rp->setname, setname))
1606                         break;
1607                 if (!rp)
1608                     break;
1609             }
1610             r->setname = xstrdup(setname);
1611             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1612                     "set %s", c, r->setname);
1613         }
1614         else
1615         {
1616             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1617                     "default set", c);
1618             r->setname = xstrdup("default");
1619         }
1620         ZOOM_options_set(r->options, "setname", r->setname);
1621     }
1622     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1623     return send_APDU(c, apdu);
1624 }
1625
1626 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1627 {
1628     int oclass;
1629     char *addinfo = 0;
1630
1631     switch (r->which)
1632     {
1633     case Z_DefaultDiagFormat_v2Addinfo:
1634         addinfo = r->u.v2Addinfo;
1635         break;
1636     case Z_DefaultDiagFormat_v3Addinfo:
1637         addinfo = r->u.v3Addinfo;
1638         break;
1639     }
1640     xfree(c->addinfo);
1641     c->addinfo = 0;
1642     set_dset_error(c, *r->condition,
1643                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1644                    addinfo, 0);
1645 }
1646
1647 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1648 {
1649     if (p->which != Z_DiagRec_defaultFormat)
1650         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1651     else
1652         response_default_diag(c, p->u.defaultFormat);
1653 }
1654
1655 ZOOM_API(ZOOM_record)
1656     ZOOM_record_clone(ZOOM_record srec)
1657 {
1658     char *buf;
1659     int size;
1660     ODR odr_enc;
1661     ZOOM_record nrec;
1662
1663     odr_enc = odr_createmem(ODR_ENCODE);
1664     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1665         return 0;
1666     buf = odr_getbuf(odr_enc, &size, 0);
1667
1668     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1669     nrec->odr = odr_createmem(ODR_DECODE);
1670     nrec->wrbuf_marc = 0;
1671     nrec->wrbuf_iconv = 0;
1672     nrec->wrbuf_opac = 0;
1673     odr_setbuf(nrec->odr, buf, size, 0);
1674     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1675
1676     odr_destroy(odr_enc);
1677     return nrec;
1678 }
1679
1680 ZOOM_API(ZOOM_record)
1681     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1682 {
1683     const char *syntax =
1684         ZOOM_options_get(s->options, "preferredRecordSyntax");
1685     const char *elementSetName =
1686         ZOOM_options_get(s->options, "elementSetName");
1687
1688     return record_cache_lookup(s, pos, syntax, elementSetName);
1689 }
1690
1691 ZOOM_API(ZOOM_record)
1692     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1693 {
1694     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1695
1696     if (!rec)
1697     {
1698         /*
1699          * MIKE: I think force_sync should always be zero, but I don't
1700          * want to make this change until I get the go-ahead from
1701          * Adam, in case something depends on the old synchronous
1702          * behaviour.
1703          */
1704         int force_sync = 1;
1705         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1706         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1707         rec = ZOOM_resultset_record_immediate(r, pos);
1708     }
1709     return rec;
1710 }
1711
1712 ZOOM_API(void)
1713     ZOOM_record_destroy(ZOOM_record rec)
1714 {
1715     if (!rec)
1716         return;
1717     if (rec->wrbuf_marc)
1718         wrbuf_free(rec->wrbuf_marc, 1);
1719     if (rec->wrbuf_iconv)
1720         wrbuf_free(rec->wrbuf_iconv, 1);
1721     if (rec->wrbuf_opac)
1722         wrbuf_free(rec->wrbuf_opac, 1);
1723     odr_destroy(rec->odr);
1724     xfree(rec);
1725 }
1726
1727 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1728                                      int *len,
1729                                      const char *buf, int sz,
1730                                      const char *record_charset)
1731 {
1732     char to[40];
1733     char from[40];
1734     yaz_iconv_t cd = 0;
1735     yaz_marc_t mt = yaz_marc_create();
1736
1737     *from = '\0';
1738     strcpy(to, "UTF-8");
1739     if (record_charset && *record_charset)
1740     {
1741         /* Use "from,to" or just "from" */
1742         const char *cp = strchr(record_charset, ',');
1743         int clen = strlen(record_charset);
1744         if (cp && cp[1])
1745         {
1746             strncpy( to, cp+1, sizeof(to)-1);
1747             to[sizeof(to)-1] = '\0';
1748             clen = cp - record_charset;
1749         }
1750         if (clen > sizeof(from)-1)
1751             clen = sizeof(from)-1;
1752
1753         if (clen)
1754             strncpy(from, record_charset, clen);
1755         from[clen] = '\0';
1756     }
1757
1758     if (*from && *to)
1759     {
1760         cd = yaz_iconv_open(to, from);
1761         yaz_marc_iconv(mt, cd);
1762     }
1763
1764     yaz_marc_xml(mt, marc_type);
1765     if (!rec->wrbuf_marc)
1766         rec->wrbuf_marc = wrbuf_alloc();
1767     wrbuf_rewind(rec->wrbuf_marc);
1768     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1769     {
1770         yaz_marc_destroy(mt);
1771         if (cd)
1772             yaz_iconv_close(cd);
1773         if (len)
1774             *len = wrbuf_len(rec->wrbuf_marc);
1775         return wrbuf_buf(rec->wrbuf_marc);
1776     }
1777     yaz_marc_destroy(mt);
1778     if (cd)
1779         yaz_iconv_close(cd);
1780     return 0;
1781 }
1782
1783 static const char *record_iconv_return(ZOOM_record rec, int *len,
1784                                        const char *buf, int sz,
1785                                        const char *record_charset)
1786 {
1787     char to[40];
1788     char from[40];
1789     yaz_iconv_t cd = 0;
1790
1791     *from = '\0';
1792     strcpy(to, "UTF-8");
1793     if (record_charset && *record_charset)
1794     {
1795         /* Use "from,to" or just "from" */
1796         const char *cp = strchr(record_charset, ',');
1797         int clen = strlen(record_charset);
1798         if (cp && cp[1])
1799         {
1800             strncpy( to, cp+1, sizeof(to)-1);
1801             to[sizeof(to)-1] = '\0';
1802             clen = cp - record_charset;
1803         }
1804         if (clen > sizeof(from)-1)
1805             clen = sizeof(from)-1;
1806
1807         if (clen)
1808             strncpy(from, record_charset, clen);
1809         from[clen] = '\0';
1810     }
1811
1812     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1813     {
1814         char outbuf[12];
1815         size_t inbytesleft = sz;
1816         const char *inp = buf;
1817
1818         if (!rec->wrbuf_iconv)
1819             rec->wrbuf_iconv = wrbuf_alloc();
1820
1821         wrbuf_rewind(rec->wrbuf_iconv);
1822
1823         while (inbytesleft)
1824         {
1825             size_t outbytesleft = sizeof(outbuf);
1826             char *outp = outbuf;
1827             size_t r = yaz_iconv(cd, (char**) &inp,
1828                                  &inbytesleft,
1829                                  &outp, &outbytesleft);
1830             if (r == (size_t) (-1))
1831             {
1832                 int e = yaz_iconv_error(cd);
1833                 if (e != YAZ_ICONV_E2BIG)
1834                     break;
1835             }
1836             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1837         }
1838         wrbuf_puts(rec->wrbuf_iconv, "");
1839         buf = wrbuf_buf(rec->wrbuf_iconv);
1840         sz = wrbuf_len(rec->wrbuf_iconv);
1841         yaz_iconv_close(cd);
1842     }
1843     if (len)
1844         *len = sz;
1845     return buf;
1846 }
1847
1848 ZOOM_API(int)
1849     ZOOM_record_error(ZOOM_record rec, const char **cp,
1850                       const char **addinfo, const char **diagset)
1851 {
1852     Z_NamePlusRecord *npr;
1853
1854     if (!rec)
1855         return 0;
1856     npr = rec->npr;
1857     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1858     {
1859         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1860         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1861         const char *add = 0;
1862
1863         if (diag_rec->which == Z_DiagRec_defaultFormat)
1864         {
1865             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1866             int oclass;
1867
1868             error = *ddf->condition;
1869             switch (ddf->which)
1870             {
1871             case Z_DefaultDiagFormat_v2Addinfo:
1872                 add = ddf->u.v2Addinfo;
1873                 break;
1874             case Z_DefaultDiagFormat_v3Addinfo:
1875                 add = ddf->u.v3Addinfo;
1876                 break;
1877             }
1878             if (diagset)
1879                 *diagset = yaz_z3950oid_to_str(ddf->diagnosticSetId, &oclass);
1880         }
1881         else
1882         {
1883             if (diagset)
1884                 *diagset = "Bib-1";
1885         }
1886         if (addinfo)
1887             *addinfo = add ? add : "";
1888         if (cp)
1889             *cp = diagbib1_str(error);
1890         return error;
1891     }
1892     return 0;
1893 }
1894
1895 ZOOM_API(const char *)
1896     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1897 {
1898     char type[40];
1899     char charset[40];
1900     char xpath[512];
1901     const char *cp;
1902     int i;
1903     Z_NamePlusRecord *npr;
1904
1905     if (len)
1906         *len = 0; /* default return */
1907
1908     if (!rec)
1909         return 0;
1910     npr = rec->npr;
1911     if (!npr)
1912         return 0;
1913
1914     cp = type_spec;
1915     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1916     {
1917         if (cp[i] == ';' || cp[i] == ' ')
1918             break;
1919         type[i] = cp[i];
1920     }
1921     type[i] = '\0';
1922     charset[0] = '\0';
1923     while (type_spec[i] == ';')
1924     {
1925         i++;
1926         while (type_spec[i] == ' ')
1927             i++;
1928         if (!strncmp(type_spec+i, "charset=", 8))
1929         {
1930             int j = 0;
1931             i = i + 8; /* skip charset= */
1932             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1933             {
1934                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1935                     break;
1936                 charset[j] = cp[i];
1937             }
1938             charset[j] = '\0';
1939         }
1940         else if (!strncmp(type_spec+i, "xpath=", 6))
1941         {
1942             int j = 0;
1943             i = i + 6;
1944             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1945                 xpath[j] = cp[i];
1946             xpath[j] = '\0';
1947         }
1948         while (type_spec[i] == ' ')
1949             i++;
1950     }
1951     if (!strcmp(type, "database"))
1952     {
1953         if (len)
1954             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1955         return npr->databaseName;
1956     }
1957     else if (!strcmp(type, "syntax"))
1958     {
1959         const char *desc = 0;
1960         if (npr->which == Z_NamePlusRecord_databaseRecord)
1961         {
1962             Z_External *r = (Z_External *) npr->u.databaseRecord;
1963             oident *ent = oid_getentbyoid(r->direct_reference);
1964             if (ent)
1965                 desc = ent->desc;
1966         }
1967         if (!desc)
1968             desc = "none";
1969         if (len)
1970             *len = strlen(desc);
1971         return desc;
1972     }
1973     if (npr->which != Z_NamePlusRecord_databaseRecord)
1974         return 0;
1975
1976     /* from now on - we have a database record .. */
1977     if (!strcmp(type, "render"))
1978     {
1979         Z_External *r = (Z_External *) npr->u.databaseRecord;
1980         oident *ent = oid_getentbyoid(r->direct_reference);
1981
1982         /* render bibliographic record .. */
1983         if (r->which == Z_External_OPAC)
1984         {
1985             r = r->u.opac->bibliographicRecord;
1986             if (!r)
1987                 return 0;
1988             ent = oid_getentbyoid(r->direct_reference);
1989         }
1990         if (r->which == Z_External_sutrs)
1991             return record_iconv_return(rec, len,
1992                                        (char*) r->u.sutrs->buf,
1993                                        r->u.sutrs->len,
1994                                        charset);
1995         else if (r->which == Z_External_octet)
1996         {
1997             const char *ret_buf;
1998             switch (ent->value)
1999             {
2000             case VAL_SOIF:
2001             case VAL_HTML:
2002             case VAL_SUTRS:
2003                 break;
2004             case VAL_TEXT_XML:
2005             case VAL_APPLICATION_XML:
2006                 break;
2007             default:
2008                 ret_buf = marc_iconv_return(
2009                     rec, YAZ_MARC_LINE, len,
2010                     (const char *) r->u.octet_aligned->buf,
2011                     r->u.octet_aligned->len,
2012                     charset);
2013                 if (ret_buf)
2014                     return ret_buf;
2015             }
2016             return record_iconv_return(rec, len,
2017                                        (const char *) r->u.octet_aligned->buf,
2018                                        r->u.octet_aligned->len,
2019                                        charset);
2020         }
2021         else if (r->which == Z_External_grs1)
2022         {
2023             if (!rec->wrbuf_marc)
2024                 rec->wrbuf_marc = wrbuf_alloc();
2025             wrbuf_rewind(rec->wrbuf_marc);
2026             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
2027             return record_iconv_return(rec, len,
2028                                        wrbuf_buf(rec->wrbuf_marc),
2029                                        wrbuf_len(rec->wrbuf_marc),
2030                                        charset);
2031         }
2032         return 0;
2033     }
2034     else if (!strcmp(type, "xml"))
2035     {
2036         Z_External *r = (Z_External *) npr->u.databaseRecord;
2037         oident *ent = oid_getentbyoid(r->direct_reference);
2038
2039         /* render bibliographic record .. */
2040         if (r->which == Z_External_OPAC)
2041         {
2042             r = r->u.opac->bibliographicRecord;
2043             if (!r)
2044                 return 0;
2045             ent = oid_getentbyoid(r->direct_reference);
2046         }
2047
2048         if (r->which == Z_External_sutrs)
2049             return record_iconv_return(rec, len,
2050                                        (const char *) r->u.sutrs->buf,
2051                                        r->u.sutrs->len,
2052                                        charset);
2053         else if (r->which == Z_External_octet)
2054         {
2055             const char *ret_buf;
2056             int marc_decode_type = YAZ_MARC_MARCXML;
2057
2058             switch (ent->value)
2059             {
2060             case VAL_SOIF:
2061             case VAL_HTML:
2062             case VAL_SUTRS:
2063                 break;
2064             case VAL_TEXT_XML:
2065             case VAL_APPLICATION_XML:
2066                 break;
2067             default:
2068                 ret_buf = marc_iconv_return(
2069                     rec, marc_decode_type, len,
2070                     (const char *) r->u.octet_aligned->buf,
2071                     r->u.octet_aligned->len,
2072                     charset);
2073                 if (ret_buf)
2074                     return ret_buf;
2075             }
2076             return record_iconv_return(rec, len,
2077                                        (const char *) r->u.octet_aligned->buf,
2078                                        r->u.octet_aligned->len,
2079                                        charset);
2080         }
2081         else if (r->which == Z_External_grs1)
2082         {
2083             if (len) *len = 5;
2084             return "GRS-1";
2085         }
2086         return 0;
2087     }
2088     else if (!strcmp(type, "raw"))
2089     {
2090         Z_External *r = (Z_External *) npr->u.databaseRecord;
2091
2092         if (r->which == Z_External_sutrs)
2093         {
2094             if (len) *len = r->u.sutrs->len;
2095             return (const char *) r->u.sutrs->buf;
2096         }
2097         else if (r->which == Z_External_octet)
2098         {
2099             if (len) *len = r->u.octet_aligned->len;
2100             return (const char *) r->u.octet_aligned->buf;
2101         }
2102         else /* grs-1, explain, OPAC, ... */
2103         {
2104             if (len) *len = -1;
2105             return (const char *) npr->u.databaseRecord;
2106         }
2107         return 0;
2108     }
2109     else if (!strcmp (type, "ext"))
2110     {
2111         if (len) *len = -1;
2112         return (const char *) npr->u.databaseRecord;
2113     }
2114     else if (!strcmp (type, "opac"))
2115
2116     {
2117         Z_External *r = (Z_External *) npr->u.databaseRecord;
2118         if (r->which == Z_External_OPAC)
2119         {
2120             if (!rec->wrbuf_opac)
2121                 rec->wrbuf_opac = wrbuf_alloc();
2122             wrbuf_rewind(rec->wrbuf_opac);
2123             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2124             return record_iconv_return(rec, len,
2125                                        wrbuf_buf(rec->wrbuf_opac),
2126                                        wrbuf_len(rec->wrbuf_opac),
2127                                        charset);
2128         }
2129     }
2130     return 0;
2131 }
2132
2133 static int strcmp_null(const char *v1, const char *v2)
2134 {
2135     if (!v1 && !v2)
2136         return 0;
2137     if (!v1 || !v2)
2138         return -1;
2139     return strcmp(v1, v2);
2140 }
2141
2142 static size_t record_hash(int pos)
2143 {
2144     if (pos < 0)
2145         pos = 0;
2146     return pos % RECORD_HASH_SIZE;
2147 }
2148
2149 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2150                              int pos,
2151                              const char *syntax, const char *elementSetName)
2152 {
2153     ZOOM_record_cache rc;
2154
2155     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2156     ZOOM_connection_put_event(r->connection, event);
2157
2158     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2159     {
2160         if (pos == rc->pos)
2161         {
2162             if (strcmp_null(r->schema, rc->schema))
2163                 continue;
2164             if (strcmp_null(elementSetName,rc->elementSetName))
2165                 continue;
2166             if (strcmp_null(syntax, rc->syntax))
2167                 continue;
2168             /* not destroying rc->npr (it's handled by nmem )*/
2169             rc->rec.npr = npr;
2170             /* keeping wrbuf_marc too */
2171             return;
2172         }
2173     }
2174     rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2175     rc->rec.npr = npr;
2176     rc->rec.odr = 0;
2177     rc->rec.wrbuf_marc = 0;
2178     rc->rec.wrbuf_iconv = 0;
2179     rc->rec.wrbuf_opac = 0;
2180     if (elementSetName)
2181         rc->elementSetName = odr_strdup(r->odr, elementSetName);
2182     else
2183         rc->elementSetName = 0;
2184
2185     if (syntax)
2186         rc->syntax = odr_strdup(r->odr, syntax);
2187     else
2188         rc->syntax = 0;
2189
2190     if (r->schema)
2191         rc->schema = odr_strdup(r->odr, r->schema);
2192     else
2193         rc->schema = 0;
2194
2195     rc->pos = pos;
2196     rc->next = r->record_hash[record_hash(pos)];
2197     r->record_hash[record_hash(pos)] = rc;
2198 }
2199
2200 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2201                                        const char *syntax,
2202                                        const char *elementSetName)
2203 {
2204     ZOOM_record_cache rc;
2205
2206     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2207     {
2208         if (pos == rc->pos)
2209         {
2210             if (strcmp_null(r->schema, rc->schema))
2211                 continue;
2212             if (strcmp_null(elementSetName,rc->elementSetName))
2213                 continue;
2214             if (strcmp_null(syntax, rc->syntax))
2215                 continue;
2216             return &rc->rec;
2217         }
2218     }
2219     return 0;
2220 }
2221
2222 static void handle_records(ZOOM_connection c, Z_Records *sr,
2223                            int present_phase)
2224 {
2225     ZOOM_resultset resultset;
2226     int *start, *count;
2227     const char *syntax = 0, *elementSetName = 0;
2228
2229     if (!c->tasks)
2230         return ;
2231     switch (c->tasks->which)
2232     {
2233     case ZOOM_TASK_SEARCH:
2234         resultset = c->tasks->u.search.resultset;
2235         start = &c->tasks->u.search.start;
2236         count = &c->tasks->u.search.count;
2237         syntax = c->tasks->u.search.syntax;
2238         elementSetName = c->tasks->u.search.elementSetName;
2239         break;
2240     case ZOOM_TASK_RETRIEVE:
2241         resultset = c->tasks->u.retrieve.resultset;
2242         start = &c->tasks->u.retrieve.start;
2243         count = &c->tasks->u.retrieve.count;
2244         syntax = c->tasks->u.retrieve.syntax;
2245         elementSetName = c->tasks->u.retrieve.elementSetName;
2246         break;
2247     default:
2248         return;
2249     }
2250     if (sr && sr->which == Z_Records_NSD)
2251         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2252     else if (sr && sr->which == Z_Records_multipleNSD)
2253     {
2254         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2255             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2256         else
2257             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2258     }
2259     else
2260     {
2261         if (*count + *start > resultset->size)
2262             *count = resultset->size - *start;
2263         if (*count < 0)
2264             *count = 0;
2265         if (sr && sr->which == Z_Records_DBOSD)
2266         {
2267             int i;
2268             NMEM nmem = odr_extract_mem(c->odr_in);
2269             Z_NamePlusRecordList *p =
2270                 sr->u.databaseOrSurDiagnostics;
2271             for (i = 0; i<p->num_records; i++)
2272             {
2273                 record_cache_add(resultset, p->records[i], i + *start,
2274                                  syntax, elementSetName);
2275             }
2276             *count -= i;
2277             if (*count < 0)
2278                 *count = 0;
2279             *start += i;
2280             yaz_log(log_details,
2281                     "handle_records resultset=%p start=%d count=%d",
2282                     resultset, *start, *count);
2283
2284             /* transfer our response to search_nmem .. we need it later */
2285             nmem_transfer(resultset->odr->mem, nmem);
2286             nmem_destroy(nmem);
2287             if (present_phase && p->num_records == 0)
2288             {
2289                 /* present response and we didn't get any records! */
2290                 Z_NamePlusRecord *myrec =
2291                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2292                 record_cache_add(resultset, myrec, *start,
2293                                  syntax, elementSetName);
2294             }
2295         }
2296         else if (present_phase)
2297         {
2298             /* present response and we didn't get any records! */
2299             Z_NamePlusRecord *myrec =
2300                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2301             record_cache_add(resultset, myrec, *start, syntax, elementSetName);
2302         }
2303     }
2304 }
2305
2306 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2307 {
2308     handle_records(c, pr->records, 1);
2309 }
2310
2311 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2312                                        Z_Term *term)
2313 {
2314     switch (term->which)
2315     {
2316     case Z_Term_general:
2317         ZOOM_options_setl(opt, name,
2318                           (const char *)(term->u.general->buf),
2319                           term->u.general->len);
2320         break;
2321     case Z_Term_characterString:
2322         ZOOM_options_set(opt, name, term->u.characterString);
2323         break;
2324     case Z_Term_numeric:
2325         ZOOM_options_set_int(opt, name, *term->u.numeric);
2326         break;
2327     }
2328 }
2329
2330 static void handle_queryExpression(ZOOM_options opt, const char *name,
2331                                    Z_QueryExpression *exp)
2332 {
2333     char opt_name[80];
2334
2335     switch (exp->which)
2336     {
2337     case Z_QueryExpression_term:
2338         if (exp->u.term && exp->u.term->queryTerm)
2339         {
2340             sprintf(opt_name, "%s.term", name);
2341             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2342         }
2343         break;
2344     case Z_QueryExpression_query:
2345         break;
2346     }
2347 }
2348
2349 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2350                                 Z_OtherInformation *o)
2351 {
2352     int i;
2353     for (i = 0; o && i < o->num_elements; i++)
2354     {
2355         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2356         {
2357             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2358
2359             if (ext->which == Z_External_searchResult1)
2360             {
2361                 int j;
2362                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2363
2364                 if (sr->num)
2365                     ZOOM_options_set_int(
2366                         resultset->options, "searchresult.size", sr->num);
2367
2368                 for (j = 0; j < sr->num; j++)
2369                 {
2370                     Z_SearchInfoReport_s *ent =
2371                         ext->u.searchResult1->elements[j];
2372                     char pref[80];
2373
2374                     sprintf(pref, "searchresult.%d", j);
2375
2376                     if (ent->subqueryId)
2377                     {
2378                         char opt_name[80];
2379                         sprintf(opt_name, "%s.id", pref);
2380                         ZOOM_options_set(resultset->options, opt_name,
2381                                          ent->subqueryId);
2382                     }
2383                     if (ent->subqueryExpression)
2384                     {
2385                         char opt_name[80];
2386                         sprintf(opt_name, "%s.subquery", pref);
2387                         handle_queryExpression(resultset->options, opt_name,
2388                                                ent->subqueryExpression);
2389                     }
2390                     if (ent->subqueryInterpretation)
2391                     {
2392                         char opt_name[80];
2393                         sprintf(opt_name, "%s.interpretation", pref);
2394                         handle_queryExpression(resultset->options, opt_name,
2395                                                ent->subqueryInterpretation);
2396                     }
2397                     if (ent->subqueryRecommendation)
2398                     {
2399                         char opt_name[80];
2400                         sprintf(opt_name, "%s.recommendation", pref);
2401                         handle_queryExpression(resultset->options, opt_name,
2402                                                ent->subqueryRecommendation);
2403                     }
2404                     if (ent->subqueryCount)
2405                     {
2406                         char opt_name[80];
2407                         sprintf(opt_name, "%s.count", pref);
2408                         ZOOM_options_set_int(resultset->options, opt_name,
2409                                              *ent->subqueryCount);
2410                     }
2411                 }
2412             }
2413         }
2414     }
2415 }
2416
2417 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2418 {
2419     ZOOM_resultset resultset;
2420     ZOOM_Event event;
2421
2422     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2423         return ;
2424
2425     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2426     ZOOM_connection_put_event(c, event);
2427
2428     resultset = c->tasks->u.search.resultset;
2429
2430     if (sr->resultSetStatus)
2431     {
2432         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2433                              *sr->resultSetStatus);
2434     }
2435     if (sr->presentStatus)
2436     {
2437         ZOOM_options_set_int(resultset->options, "presentStatus",
2438                              *sr->presentStatus);
2439     }
2440     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2441
2442     resultset->size = *sr->resultCount;
2443     handle_records(c, sr->records, 0);
2444 }
2445
2446 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2447 {
2448     if (res->diagnostics && res->num_diagnostics > 0)
2449         response_diag(c, res->diagnostics[0]);
2450 }
2451
2452 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2453 {
2454     NMEM nmem = odr_extract_mem(c->odr_in);
2455     ZOOM_scanset scan;
2456
2457     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2458         return 0;
2459     scan = c->tasks->u.scan.scan;
2460
2461     if (res->entries && res->entries->nonsurrogateDiagnostics)
2462         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2463     scan->scan_response = res;
2464     nmem_transfer(scan->odr->mem, nmem);
2465     if (res->stepSize)
2466         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2467     if (res->positionOfTerm)
2468         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2469     if (res->scanStatus)
2470         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2471     if (res->numberOfEntriesReturned)
2472         ZOOM_options_set_int(scan->options, "number",
2473                              *res->numberOfEntriesReturned);
2474     nmem_destroy(nmem);
2475     return 1;
2476 }
2477
2478 static zoom_ret send_sort(ZOOM_connection c,
2479                           ZOOM_resultset resultset)
2480 {
2481     if (c->error)
2482         resultset->r_sort_spec = 0;
2483     if (resultset->r_sort_spec)
2484     {
2485         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2486         Z_SortRequest *req = apdu->u.sortRequest;
2487
2488         req->num_inputResultSetNames = 1;
2489         req->inputResultSetNames = (Z_InternationalString **)
2490             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2491         req->inputResultSetNames[0] =
2492             odr_strdup(c->odr_out, resultset->setname);
2493         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2494         req->sortSequence = resultset->r_sort_spec;
2495         resultset->r_sort_spec = 0;
2496         return send_APDU(c, apdu);
2497     }
2498     return zoom_complete;
2499 }
2500
2501 static zoom_ret send_present(ZOOM_connection c)
2502 {
2503     Z_APDU *apdu = 0;
2504     Z_PresentRequest *req = 0;
2505     int i = 0;
2506     const char *syntax = 0;
2507     const char *elementSetName = 0;
2508     ZOOM_resultset  resultset;
2509     int *start, *count;
2510
2511     if (!c->tasks)
2512     {
2513         yaz_log(log_details, "%p send_present no tasks", c);
2514         return zoom_complete;
2515     }
2516
2517     switch (c->tasks->which)
2518     {
2519     case ZOOM_TASK_SEARCH:
2520         resultset = c->tasks->u.search.resultset;
2521         start = &c->tasks->u.search.start;
2522         count = &c->tasks->u.search.count;
2523         syntax = c->tasks->u.search.syntax;
2524         elementSetName = c->tasks->u.search.elementSetName;
2525         break;
2526     case ZOOM_TASK_RETRIEVE:
2527         resultset = c->tasks->u.retrieve.resultset;
2528         start = &c->tasks->u.retrieve.start;
2529         count = &c->tasks->u.retrieve.count;
2530         syntax = c->tasks->u.retrieve.syntax;
2531         elementSetName = c->tasks->u.retrieve.elementSetName;
2532         break;
2533     default:
2534         return zoom_complete;
2535     }
2536     yaz_log(log_details, "%p send_present start=%d count=%d",
2537             c, *start, *count);
2538
2539     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2540     {
2541         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2542                        "", 0);
2543     }
2544     if (c->error)                  /* don't continue on error */
2545         return zoom_complete;
2546     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2547             resultset, *start, *count);
2548
2549     for (i = 0; i < *count; i++)
2550     {
2551         ZOOM_record rec =
2552             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2553         if (!rec)
2554             break;
2555         else
2556         {
2557             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2558             ZOOM_connection_put_event(c, event);
2559         }
2560     }
2561     *start += i;
2562     *count -= i;
2563
2564     if (*count == 0)
2565     {
2566         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2567         return zoom_complete;
2568     }
2569
2570     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2571     req = apdu->u.presentRequest;
2572
2573     if (i)
2574         yaz_log(log_details, "%p send_present skip=%d", c, i);
2575
2576     *req->resultSetStartPoint = *start + 1;
2577     *req->numberOfRecordsRequested = resultset->step>0 ?
2578         resultset->step : *count;
2579     if (*req->numberOfRecordsRequested + *start > resultset->size)
2580         *req->numberOfRecordsRequested = resultset->size - *start;
2581     assert(*req->numberOfRecordsRequested > 0);
2582
2583     if (syntax && *syntax)
2584         req->preferredRecordSyntax =
2585             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2586
2587     if (resultset->schema && *resultset->schema)
2588     {
2589         Z_RecordComposition *compo = (Z_RecordComposition *)
2590             odr_malloc(c->odr_out, sizeof(*compo));
2591
2592         req->recordComposition = compo;
2593         compo->which = Z_RecordComp_complex;
2594         compo->u.complex = (Z_CompSpec *)
2595             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2596         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2597             odr_malloc(c->odr_out, sizeof(bool_t));
2598         *compo->u.complex->selectAlternativeSyntax = 0;
2599
2600         compo->u.complex->generic = (Z_Specification *)
2601             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2602
2603         compo->u.complex->generic->which = Z_Schema_oid;
2604         compo->u.complex->generic->schema.oid = (Odr_oid *)
2605             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2606
2607         if (!compo->u.complex->generic->schema.oid)
2608         {
2609             /* OID wasn't a schema! Try record syntax instead. */
2610
2611             compo->u.complex->generic->schema.oid = (Odr_oid *)
2612                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2613         }
2614         if (elementSetName && *elementSetName)
2615         {
2616             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2617                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2618             compo->u.complex->generic->elementSpec->which =
2619                 Z_ElementSpec_elementSetName;
2620             compo->u.complex->generic->elementSpec->u.elementSetName =
2621                 odr_strdup(c->odr_out, elementSetName);
2622         }
2623         else
2624             compo->u.complex->generic->elementSpec = 0;
2625         compo->u.complex->num_dbSpecific = 0;
2626         compo->u.complex->dbSpecific = 0;
2627         compo->u.complex->num_recordSyntax = 0;
2628         compo->u.complex->recordSyntax = 0;
2629     }
2630     else if (elementSetName && *elementSetName)
2631     {
2632         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2633             odr_malloc(c->odr_out, sizeof(*esn));
2634         Z_RecordComposition *compo = (Z_RecordComposition *)
2635             odr_malloc(c->odr_out, sizeof(*compo));
2636
2637         esn->which = Z_ElementSetNames_generic;
2638         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2639         compo->which = Z_RecordComp_simple;
2640         compo->u.simple = esn;
2641         req->recordComposition = compo;
2642     }
2643     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2644     return send_APDU(c, apdu);
2645 }
2646
2647 ZOOM_API(ZOOM_scanset)
2648     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2649 {
2650     ZOOM_scanset s;
2651     ZOOM_query q = ZOOM_query_create();
2652
2653     ZOOM_query_prefix(q, start);
2654
2655     s = ZOOM_connection_scan1(c, q);
2656     ZOOM_query_destroy(q);
2657     return s;
2658
2659 }
2660
2661 ZOOM_API(ZOOM_scanset)
2662     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2663 {
2664     char *start;
2665     char *freeme = 0;
2666     ZOOM_scanset scan = 0;
2667
2668     /*
2669      * We need to check the query-type, so we can recognise CQL and
2670      * CCL and compile them into a form that we can use here.  The
2671      * ZOOM_query structure has no explicit `type' member, but
2672      * inspection of the ZOOM_query_prefix() and ZOOM_query_cql()
2673      * functions shows how the structure is set up in each case.
2674      */
2675     if (!q->z_query)
2676         return 0;
2677     else if (q->z_query->which == Z_Query_type_1)
2678     {
2679         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2680                 c, q, q->query_string);
2681         start = q->query_string;
2682     }
2683     else if (q->z_query->which == Z_Query_type_104)
2684     {
2685         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2686                 c, q, q->query_string);
2687         start = freeme = cql2pqf(c, q->query_string);
2688         if (start == 0)
2689             return 0;
2690     }
2691     else
2692     {
2693         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2694                 c, q, q->query_string);
2695         abort();
2696     }
2697
2698     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2699     scan->connection = c;
2700     scan->odr = odr_createmem(ODR_DECODE);
2701     scan->options = ZOOM_options_create_with_parent(c->options);
2702     scan->refcount = 1;
2703     scan->scan_response = 0;
2704     scan->termListAndStartPoint =
2705         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2706     xfree(freeme);
2707
2708     scan->databaseNames = set_DatabaseNames(c, c->options,
2709                                             &scan->num_databaseNames,
2710                                             scan->odr);
2711     if (scan->termListAndStartPoint != 0)
2712     {
2713         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2714         task->u.scan.scan = scan;
2715
2716         (scan->refcount)++;
2717         if (!c->async)
2718         {
2719             while (ZOOM_event(1, &c))
2720                 ;
2721         }
2722     }
2723     return scan;
2724 }
2725
2726 ZOOM_API(void)
2727     ZOOM_scanset_destroy(ZOOM_scanset scan)
2728 {
2729     if (!scan)
2730         return;
2731     (scan->refcount)--;
2732     if (scan->refcount == 0)
2733     {
2734         odr_destroy(scan->odr);
2735
2736         ZOOM_options_destroy(scan->options);
2737         xfree(scan);
2738     }
2739 }
2740
2741 static zoom_ret send_package(ZOOM_connection c)
2742 {
2743     ZOOM_Event event;
2744
2745     yaz_log(log_details, "%p send_package", c);
2746     if (!c->tasks)
2747         return zoom_complete;
2748     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2749
2750     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2751     ZOOM_connection_put_event(c, event);
2752
2753     c->buf_out = c->tasks->u.package->buf_out;
2754     c->len_out = c->tasks->u.package->len_out;
2755
2756     return do_write(c);
2757 }
2758
2759 static zoom_ret send_scan(ZOOM_connection c)
2760 {
2761     ZOOM_scanset scan;
2762     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2763     Z_ScanRequest *req = apdu->u.scanRequest;
2764
2765     yaz_log(log_details, "%p send_scan", c);
2766     if (!c->tasks)
2767         return zoom_complete;
2768     assert (c->tasks->which == ZOOM_TASK_SCAN);
2769     scan = c->tasks->u.scan.scan;
2770
2771     req->termListAndStartPoint = scan->termListAndStartPoint;
2772     req->attributeSet = scan->attributeSet;
2773
2774     *req->numberOfTermsRequested =
2775         ZOOM_options_get_int(scan->options, "number", 10);
2776
2777     req->preferredPositionInResponse =
2778         odr_intdup(c->odr_out,
2779                    ZOOM_options_get_int(scan->options, "position", 1));
2780
2781     req->stepSize =
2782         odr_intdup(c->odr_out,
2783                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2784
2785     req->databaseNames = scan->databaseNames;
2786     req->num_databaseNames = scan->num_databaseNames;
2787
2788     return send_APDU(c, apdu);
2789 }
2790
2791 ZOOM_API(size_t)
2792     ZOOM_scanset_size(ZOOM_scanset scan)
2793 {
2794     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2795         return 0;
2796     return scan->scan_response->entries->num_entries;
2797 }
2798
2799 ZOOM_API(const char *)
2800     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2801                       int *occ, int *len)
2802 {
2803     const char *term = 0;
2804     size_t noent = ZOOM_scanset_size(scan);
2805     Z_ScanResponse *res = scan->scan_response;
2806
2807     *len = 0;
2808     *occ = 0;
2809     if (pos >= noent)
2810         return 0;
2811     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2812     {
2813         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2814
2815         if (t->term->which == Z_Term_general)
2816         {
2817             term = (const char *) t->term->u.general->buf;
2818             *len = t->term->u.general->len;
2819         }
2820         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2821     }
2822     return term;
2823 }
2824
2825 ZOOM_API(const char *)
2826     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
2827                               int *occ, int *len)
2828 {
2829     const char *term = 0;
2830     size_t noent = ZOOM_scanset_size(scan);
2831     Z_ScanResponse *res = scan->scan_response;
2832
2833     *len = 0;
2834     *occ = 0;
2835     if (pos >= noent)
2836         return 0;
2837     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2838     {
2839         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2840
2841         if (t->displayTerm)
2842         {
2843             term = t->displayTerm;
2844             *len = strlen(term);
2845         }
2846         else if (t->term->which == Z_Term_general)
2847         {
2848             term = (const char *) t->term->u.general->buf;
2849             *len = t->term->u.general->len;
2850         }
2851         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2852     }
2853     return term;
2854 }
2855
2856 ZOOM_API(const char *)
2857     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
2858 {
2859     return ZOOM_options_get(scan->options, key);
2860 }
2861
2862 ZOOM_API(void)
2863     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
2864                             const char *val)
2865 {
2866     ZOOM_options_set(scan->options, key, val);
2867 }
2868
2869 static Z_APDU *create_es_package(ZOOM_package p, int type)
2870 {
2871     const char *str;
2872     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2873     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2874
2875     *req->function = Z_ExtendedServicesRequest_create;
2876
2877     str = ZOOM_options_get(p->options, "package-name");
2878     if (str && *str)
2879         req->packageName = nmem_strdup(p->odr_out->mem, str);
2880
2881     str = ZOOM_options_get(p->options, "user-id");
2882     if (str)
2883         req->userId = nmem_strdup(p->odr_out->mem, str);
2884
2885     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2886                                               type);
2887
2888     str = ZOOM_options_get(p->options, "function");
2889     if (str)
2890     {
2891         if (!strcmp (str, "create"))
2892             *req->function = 1;
2893         if (!strcmp (str, "delete"))
2894             *req->function = 2;
2895         if (!strcmp (str, "modify"))
2896             *req->function = 3;
2897     }
2898     return apdu;
2899 }
2900
2901 static const char *ill_array_lookup(void *clientData, const char *idx)
2902 {
2903     ZOOM_package p = (ZOOM_package) clientData;
2904     return ZOOM_options_get(p->options, idx+4);
2905 }
2906
2907 static Z_External *encode_ill_request(ZOOM_package p)
2908 {
2909     ODR out = p->odr_out;
2910     ILL_Request *req;
2911     Z_External *r = 0;
2912     struct ill_get_ctl ctl;
2913
2914     ctl.odr = p->odr_out;
2915     ctl.clientData = p;
2916     ctl.f = ill_array_lookup;
2917
2918     req = ill_get_ILLRequest(&ctl, "ill", 0);
2919
2920     if (!ill_Request(out, &req, 0, 0))
2921     {
2922         int ill_request_size;
2923         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
2924         if (ill_request_buf)
2925             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
2926         return 0;
2927     }
2928     else
2929     {
2930         oident oid;
2931         int illRequest_size = 0;
2932         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
2933
2934         oid.proto = PROTO_GENERAL;
2935         oid.oclass = CLASS_GENERAL;
2936         oid.value = VAL_ISO_ILL_1;
2937
2938         r = (Z_External *) odr_malloc(out, sizeof(*r));
2939         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2940         r->indirect_reference = 0;
2941         r->descriptor = 0;
2942         r->which = Z_External_single;
2943
2944         r->u.single_ASN1_type =
2945             odr_create_Odr_oct(out,
2946                                (unsigned char *)illRequest_buf,
2947                                illRequest_size);
2948     }
2949     return r;
2950 }
2951
2952 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2953 {
2954     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
2955     const char *str;
2956
2957     req->which = Z_IOItemOrder_esRequest;
2958     req->u.esRequest = (Z_IORequest *)
2959         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2960
2961     /* to keep part ... */
2962     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2963         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2964     req->u.esRequest->toKeep->supplDescription = 0;
2965     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2966         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2967
2968     str = ZOOM_options_get(p->options, "contact-name");
2969     req->u.esRequest->toKeep->contact->name = str ?
2970         nmem_strdup(p->odr_out->mem, str) : 0;
2971
2972     str = ZOOM_options_get(p->options, "contact-phone");
2973     req->u.esRequest->toKeep->contact->phone = str ?
2974         nmem_strdup(p->odr_out->mem, str) : 0;
2975
2976     str = ZOOM_options_get(p->options, "contact-email");
2977     req->u.esRequest->toKeep->contact->email = str ?
2978         nmem_strdup(p->odr_out->mem, str) : 0;
2979
2980     req->u.esRequest->toKeep->addlBilling = 0;
2981
2982     /* not to keep part ... */
2983     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2984         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2985
2986     str = ZOOM_options_get(p->options, "itemorder-setname");
2987     if (!str)
2988         str = "default";
2989
2990     if (!*str)
2991         req->u.esRequest->notToKeep->resultSetItem = 0;
2992     else
2993     {
2994         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2995             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2996
2997         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2998             nmem_strdup(p->odr_out->mem, str);
2999         req->u.esRequest->notToKeep->resultSetItem->item =
3000             (int *) odr_malloc(p->odr_out, sizeof(int));
3001
3002         str = ZOOM_options_get(p->options, "itemorder-item");
3003         *req->u.esRequest->notToKeep->resultSetItem->item =
3004             (str ? atoi(str) : 1);
3005     }
3006
3007     str = ZOOM_options_get(p->options, "doc");
3008     if (str)
3009         req->u.esRequest->notToKeep->itemRequest =
3010             z_ext_record(p->odr_out, VAL_TEXT_XML, str, strlen(str));
3011     else
3012         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3013
3014     return req;
3015 }
3016
3017 Z_APDU *create_admin_package(ZOOM_package p, int type,
3018                              Z_ESAdminOriginPartToKeep **toKeepP,
3019                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3020 {
3021     Z_APDU *apdu = create_es_package(p, VAL_ADMINSERVICE);
3022     if (apdu)
3023     {
3024         Z_ESAdminOriginPartToKeep  *toKeep;
3025         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3026         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3027         const char *first_db = "Default";
3028         int num_db;
3029         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3030                                       p->odr_out);
3031         if (num_db > 0)
3032             first_db = db[0];
3033
3034         r->direct_reference =
3035             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3036                                    VAL_ADMINSERVICE);
3037         r->descriptor = 0;
3038         r->indirect_reference = 0;
3039         r->which = Z_External_ESAdmin;
3040
3041         r->u.adminService = (Z_Admin *)
3042             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3043         r->u.adminService->which = Z_Admin_esRequest;
3044         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3045             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3046
3047         toKeep = r->u.adminService->u.esRequest->toKeep =
3048             (Z_ESAdminOriginPartToKeep *)
3049             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3050         toKeep->which = type;
3051         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3052         toKeep->u.create = odr_nullval();
3053         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3054
3055         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3056             (Z_ESAdminOriginPartNotToKeep *)
3057             odr_malloc(p->odr_out,
3058                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3059         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3060         notToKeep->u.recordsWillFollow = odr_nullval();
3061         if (toKeepP)
3062             *toKeepP = toKeep;
3063         if (notToKeepP)
3064             *notToKeepP = notToKeep;
3065     }
3066     return apdu;
3067 }
3068
3069 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3070 {
3071     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
3072     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3073     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3074     const char *doc = ZOOM_options_get(p->options, "doc");
3075
3076     if (!doc)
3077         doc = "";
3078
3079     req->taskSpecificParameters = ext;
3080     ext->direct_reference = req->packageType;
3081     ext->descriptor = 0;
3082     ext->indirect_reference = 0;
3083
3084     ext->which = Z_External_octet;
3085     ext->u.single_ASN1_type =
3086         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
3087                            strlen(doc));
3088     return apdu;
3089 }
3090
3091 static Z_APDU *create_update_package(ZOOM_package p)
3092 {
3093     Z_APDU *apdu = 0;
3094     const char *first_db = "Default";
3095     int num_db;
3096     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3097     const char *action = ZOOM_options_get(p->options, "action");
3098     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
3099     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3100     const char *record_buf = ZOOM_options_get(p->options, "record");
3101     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3102     int syntax_oid = VAL_NONE;
3103     int action_no = -1;
3104
3105     if (syntax_str)
3106         syntax_oid = oid_getvalbyname(syntax_str);
3107     if (!record_buf)
3108     {
3109         record_buf = "void";
3110         syntax_oid = VAL_SUTRS;
3111     }
3112     if (syntax_oid == VAL_NONE)
3113         syntax_oid = VAL_TEXT_XML;
3114
3115     if (num_db > 0)
3116         first_db = db[0];
3117
3118     if (!action)
3119         action = "specialUpdate";
3120
3121     if (!strcmp(action, "recordInsert"))
3122         action_no = Z_IUOriginPartToKeep_recordInsert;
3123     else if (!strcmp(action, "recordReplace"))
3124         action_no = Z_IUOriginPartToKeep_recordReplace;
3125     else if (!strcmp(action, "recordDelete"))
3126         action_no = Z_IUOriginPartToKeep_recordDelete;
3127     else if (!strcmp(action, "elementUpdate"))
3128         action_no = Z_IUOriginPartToKeep_elementUpdate;
3129     else if (!strcmp(action, "specialUpdate"))
3130         action_no = Z_IUOriginPartToKeep_specialUpdate;
3131     else
3132         return 0;
3133
3134     apdu = create_es_package(p, VAL_DBUPDATE);
3135     if (apdu)
3136     {
3137         Z_IUOriginPartToKeep *toKeep;
3138         Z_IUSuppliedRecords *notToKeep;
3139         Z_External *r = (Z_External *)
3140             odr_malloc(p->odr_out, sizeof(*r));
3141
3142         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3143
3144         r->direct_reference =
3145             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3146                                    VAL_DBUPDATE);
3147         r->descriptor = 0;
3148         r->which = Z_External_update;
3149         r->indirect_reference = 0;
3150         r->u.update = (Z_IUUpdate *)
3151             odr_malloc(p->odr_out, sizeof(*r->u.update));
3152
3153         r->u.update->which = Z_IUUpdate_esRequest;
3154         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3155             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3156         toKeep = r->u.update->u.esRequest->toKeep =
3157             (Z_IUOriginPartToKeep *)
3158             odr_malloc(p->odr_out, sizeof(*toKeep));
3159
3160         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3161         toKeep->schema = 0;
3162         toKeep->elementSetName = 0;
3163         toKeep->actionQualifier = 0;
3164         toKeep->action = odr_intdup(p->odr_out, action_no);
3165
3166         notToKeep = r->u.update->u.esRequest->notToKeep =
3167             (Z_IUSuppliedRecords *)
3168             odr_malloc(p->odr_out, sizeof(*notToKeep));
3169         notToKeep->num = 1;
3170         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3171             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3172         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3173             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3174         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3175         if (recordIdOpaque)
3176         {
3177             notToKeep->elements[0]->u.opaque =
3178                 odr_create_Odr_oct(p->odr_out,
3179                                    (const unsigned char *) recordIdOpaque,
3180                                    strlen(recordIdOpaque));
3181         }
3182         else if (recordIdNumber)
3183         {
3184             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3185
3186             notToKeep->elements[0]->u.number =
3187                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3188         }
3189         else
3190             notToKeep->elements[0]->u.opaque = 0;
3191         notToKeep->elements[0]->supplementalId = 0;
3192         notToKeep->elements[0]->correlationInfo = 0;
3193         notToKeep->elements[0]->record =
3194             z_ext_record(p->odr_out, syntax_oid,
3195                          record_buf, strlen(record_buf));
3196     }
3197     if (0 && apdu)
3198     {
3199         ODR print = odr_createmem(ODR_PRINT);
3200
3201         z_APDU(print, &apdu, 0, 0);
3202         odr_destroy(print);
3203     }
3204     return apdu;
3205 }
3206
3207 ZOOM_API(void)
3208     ZOOM_package_send(ZOOM_package p, const char *type)
3209 {
3210     Z_APDU *apdu = 0;
3211     ZOOM_connection c;
3212     if (!p)
3213         return;
3214     c = p->connection;
3215     odr_reset(p->odr_out);
3216     xfree(p->buf_out);
3217     p->buf_out = 0;
3218     if (!strcmp(type, "itemorder"))
3219     {
3220         apdu = create_es_package(p, VAL_ITEMORDER);
3221         if (apdu)
3222         {
3223             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3224
3225             r->direct_reference =
3226                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3227                                        VAL_ITEMORDER);
3228             r->descriptor = 0;
3229             r->which = Z_External_itemOrder;
3230             r->indirect_reference = 0;
3231             r->u.itemOrder = encode_item_order(p);
3232
3233             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3234         }
3235     }
3236     else if (!strcmp(type, "create"))  /* create database */
3237     {
3238         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3239                                     0, 0);
3240     }
3241     else if (!strcmp(type, "drop"))  /* drop database */
3242     {
3243         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3244                                     0, 0);
3245     }
3246     else if (!strcmp(type, "commit"))  /* commit changes */
3247     {
3248         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3249                                     0, 0);
3250     }
3251     else if (!strcmp(type, "update")) /* update record(s) */
3252     {
3253         apdu = create_update_package(p);
3254     }
3255     else if (!strcmp(type, "xmlupdate"))
3256     {
3257         apdu = create_xmlupdate_package(p);
3258     }
3259     if (apdu)
3260     {
3261         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3262         {
3263             char *buf;
3264
3265             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3266             task->u.package = p;
3267             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3268             p->buf_out = (char *) xmalloc(p->len_out);
3269             memcpy(p->buf_out, buf, p->len_out);
3270
3271             (p->refcount)++;
3272             if (!c->async)
3273             {
3274                 while (ZOOM_event(1, &c))
3275                     ;
3276             }
3277         }
3278     }
3279 }
3280
3281 ZOOM_API(ZOOM_package)
3282     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3283 {
3284     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3285
3286     p->connection = c;
3287     p->odr_out = odr_createmem(ODR_ENCODE);
3288     p->options = ZOOM_options_create_with_parent2(options, c->options);
3289     p->refcount = 1;
3290     p->buf_out = 0;
3291     p->len_out = 0;
3292     return p;
3293 }
3294
3295 ZOOM_API(void)
3296     ZOOM_package_destroy(ZOOM_package p)
3297 {
3298     if (!p)
3299         return;
3300     (p->refcount)--;
3301     if (p->refcount == 0)
3302     {
3303         odr_destroy(p->odr_out);
3304         xfree(p->buf_out);
3305
3306         ZOOM_options_destroy(p->options);
3307         xfree(p);
3308     }
3309 }
3310
3311 ZOOM_API(const char *)
3312     ZOOM_package_option_get(ZOOM_package p, const char *key)
3313 {
3314     return ZOOM_options_get(p->options, key);
3315 }
3316
3317
3318 ZOOM_API(void)
3319     ZOOM_package_option_set(ZOOM_package p, const char *key,
3320                             const char *val)
3321 {
3322     ZOOM_options_set(p->options, key, val);
3323 }
3324
3325 static int ZOOM_connection_exec_task(ZOOM_connection c)
3326 {
3327     ZOOM_task task = c->tasks;
3328     zoom_ret ret = zoom_complete;
3329
3330     if (!task)
3331         return 0;
3332     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3333             c, task->which, task->running);
3334     if (c->error != ZOOM_ERROR_NONE)
3335     {
3336         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3337                 "removing tasks because of error = %d", c, c->error);
3338         ZOOM_connection_remove_tasks(c);
3339         return 0;
3340     }
3341     if (task->running)
3342     {
3343         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3344                 "task already running", c);
3345         return 0;
3346     }
3347     task->running = 1;
3348     ret = zoom_complete;
3349     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3350     {
3351         switch (task->which)
3352         {
3353         case ZOOM_TASK_SEARCH:
3354             if (c->proto == PROTO_HTTP)
3355                 ret = ZOOM_connection_srw_send_search(c);
3356             else
3357                 ret = ZOOM_connection_send_search(c);
3358             break;
3359         case ZOOM_TASK_RETRIEVE:
3360             if (c->proto == PROTO_HTTP)
3361                 ret = ZOOM_connection_srw_send_search(c);
3362             else
3363                 ret = send_present(c);
3364             break;
3365         case ZOOM_TASK_CONNECT:
3366             ret = do_connect(c);
3367             break;
3368         case ZOOM_TASK_SCAN:
3369             ret = send_scan(c);
3370             break;
3371         case ZOOM_TASK_PACKAGE:
3372             ret = send_package(c);
3373             break;
3374         case ZOOM_TASK_SORT:
3375             c->tasks->u.sort.resultset->r_sort_spec =
3376                 c->tasks->u.sort.q->sort_spec;
3377             ret = send_sort(c, c->tasks->u.sort.resultset);
3378             break;
3379         }
3380     }
3381     else
3382     {
3383         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3384                 "remove tasks because no connection exist", c);
3385         ZOOM_connection_remove_tasks(c);
3386     }
3387     if (ret == zoom_complete)
3388     {
3389         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3390                 "task removed (complete)", c);
3391         ZOOM_connection_remove_task(c);
3392         return 0;
3393     }
3394     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3395             "task pending", c);
3396     return 1;
3397 }
3398
3399 static zoom_ret send_sort_present(ZOOM_connection c)
3400 {
3401     zoom_ret r = zoom_complete;
3402
3403     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3404         r = send_sort(c, c->tasks->u.search.resultset);
3405     if (r == zoom_complete)
3406         r = send_present(c);
3407     return r;
3408 }
3409
3410 static int es_response(ZOOM_connection c,
3411                        Z_ExtendedServicesResponse *res)
3412 {
3413     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3414         return 0;
3415     if (res->diagnostics && res->num_diagnostics > 0)
3416         response_diag(c, res->diagnostics[0]);
3417     if (res->taskPackage &&
3418         res->taskPackage->which == Z_External_extendedService)
3419     {
3420         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3421         Odr_oct *id = taskPackage->targetReference;
3422
3423         if (id)
3424             ZOOM_options_setl(c->tasks->u.package->options,
3425                               "targetReference", (char*) id->buf, id->len);
3426     }
3427     if (res->taskPackage &&
3428         res->taskPackage->which == Z_External_octet)
3429     {
3430         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3431         ZOOM_options_setl(c->tasks->u.package->options,
3432                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3433     }
3434     return 1;
3435 }
3436
3437 static void interpret_init_diag(ZOOM_connection c,
3438                                 Z_DiagnosticFormat *diag)
3439 {
3440     if (diag->num > 0)
3441     {
3442         Z_DiagnosticFormat_s *ds = diag->elements[0];
3443         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3444             response_default_diag(c, ds->u.defaultDiagRec);
3445     }
3446 }
3447
3448
3449 static void interpret_otherinformation_field(ZOOM_connection c,
3450                                              Z_OtherInformation *ui)
3451 {
3452     int i;
3453     for (i = 0; i < ui->num_elements; i++)
3454     {
3455         Z_OtherInformationUnit *unit = ui->list[i];
3456         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3457             unit->information.externallyDefinedInfo &&
3458             unit->information.externallyDefinedInfo->which ==
3459             Z_External_diag1)
3460         {
3461             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3462         }
3463     }
3464 }
3465
3466
3467 static void set_init_option(const char *name, void *clientData) {
3468     ZOOM_connection c = clientData;
3469     char buf[80];
3470
3471     sprintf(buf, "init_opt_%.70s", name);
3472     ZOOM_connection_option_set(c, buf, "1");
3473 }
3474
3475
3476 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3477 {
3478     Z_InitResponse *initrs;
3479
3480     ZOOM_connection_set_mask(c, 0);
3481     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3482     switch(apdu->which)
3483     {
3484     case Z_APDU_initResponse:
3485         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3486         initrs = apdu->u.initResponse;
3487         ZOOM_connection_option_set(c, "serverImplementationId",
3488                                    initrs->implementationId ?
3489                                    initrs->implementationId : "");
3490         ZOOM_connection_option_set(c, "serverImplementationName",
3491                                    initrs->implementationName ?
3492                                    initrs->implementationName : "");
3493         ZOOM_connection_option_set(c, "serverImplementationVersion",
3494                                    initrs->implementationVersion ?
3495                                    initrs->implementationVersion : "");
3496         /* Set the three old options too, for old applications */
3497         ZOOM_connection_option_set(c, "targetImplementationId",
3498                                    initrs->implementationId ?
3499                                    initrs->implementationId : "");
3500         ZOOM_connection_option_set(c, "targetImplementationName",
3501                                    initrs->implementationName ?
3502                                    initrs->implementationName : "");
3503         ZOOM_connection_option_set(c, "targetImplementationVersion",
3504                                    initrs->implementationVersion ?
3505                                    initrs->implementationVersion : "");
3506
3507         /* Make initrs->options available as ZOOM-level options */
3508         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3509
3510         if (!*initrs->result)
3511         {
3512             Z_External *uif = initrs->userInformationField;
3513
3514             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3515
3516             if (uif && uif->which == Z_External_userInfo1)
3517                 interpret_otherinformation_field(c, uif->u.userInfo1);
3518         }
3519         else
3520         {
3521             char *cookie =
3522                 yaz_oi_get_string_oidval(&apdu->u.initResponse->otherInfo,
3523                                          VAL_COOKIE, 1, 0);
3524             xfree(c->cookie_in);
3525             c->cookie_in = 0;
3526             if (cookie)
3527                 c->cookie_in = xstrdup(cookie);
3528             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3529                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3530                 c->support_named_resultsets = 1;
3531             if (c->tasks)
3532             {
3533                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3534                 ZOOM_connection_remove_task(c);
3535             }
3536             ZOOM_connection_exec_task(c);
3537         }
3538         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3539         {
3540             NMEM tmpmem = nmem_create();
3541             Z_CharSetandLanguageNegotiation *p =
3542                 yaz_get_charneg_record(initrs->otherInfo);
3543
3544             if (p)
3545             {
3546                 char *charset = NULL, *lang = NULL;
3547                 int sel;
3548
3549                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3550                 yaz_log(log_details, "%p recv_apdu target accepted: "
3551                         "charset %s, language %s, select %d",
3552                         c,
3553                         charset ? charset : "none", lang ? lang : "none", sel);
3554                 if (charset)
3555                     ZOOM_connection_option_set(c, "negotiation-charset",
3556                                                charset);
3557                 if (lang)
3558                     ZOOM_connection_option_set(c, "negotiation-lang",
3559                                                lang);
3560
3561                 ZOOM_connection_option_set(
3562                     c,  "negotiation-charset-in-effect-for-records",
3563                     (sel != 0) ? "1" : "0");
3564                 nmem_destroy(tmpmem);
3565             }
3566         }
3567         break;
3568     case Z_APDU_searchResponse:
3569         yaz_log(log_api, "%p recv_apdu Search response", c);
3570         handle_search_response(c, apdu->u.searchResponse);
3571         if (send_sort_present(c) == zoom_complete)
3572             ZOOM_connection_remove_task(c);
3573         break;
3574     case Z_APDU_presentResponse:
3575         yaz_log(log_api, "%p recv_apdu Present response", c);
3576         handle_present_response(c, apdu->u.presentResponse);
3577         if (send_present(c) == zoom_complete)
3578             ZOOM_connection_remove_task(c);
3579         break;
3580     case Z_APDU_sortResponse:
3581         yaz_log(log_api, "%p recv_apdu Sort response", c);
3582         sort_response(c, apdu->u.sortResponse);
3583         if (send_present(c) == zoom_complete)
3584             ZOOM_connection_remove_task(c);
3585         break;
3586     case Z_APDU_scanResponse:
3587         yaz_log(log_api, "%p recv_apdu Scan response", c);
3588         scan_response(c, apdu->u.scanResponse);
3589         ZOOM_connection_remove_task(c);
3590         break;
3591     case Z_APDU_extendedServicesResponse:
3592         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3593         es_response(c, apdu->u.extendedServicesResponse);
3594         ZOOM_connection_remove_task(c);
3595         break;
3596     case Z_APDU_close:
3597         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3598         if (!ZOOM_test_reconnect(c))
3599         {
3600             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3601             do_close(c);
3602         }
3603         break;
3604     default:
3605         yaz_log(log_api, "%p Received unknown PDU", c);
3606         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3607         do_close(c);
3608     }
3609 }
3610
3611 #if YAZ_HAVE_XML2
3612 static void handle_srw_response(ZOOM_connection c,
3613                                 Z_SRW_searchRetrieveResponse *res)
3614 {
3615     ZOOM_resultset resultset = 0;
3616     int i;
3617     NMEM nmem;
3618     ZOOM_Event event;
3619     int *start;
3620     const char *syntax, *elementSetName;
3621
3622     if (!c->tasks)
3623         return;
3624
3625     switch(c->tasks->which)
3626     {
3627     case ZOOM_TASK_SEARCH:
3628         resultset = c->tasks->u.search.resultset;
3629         start = &c->tasks->u.search.start;
3630         syntax = c->tasks->u.search.syntax;
3631         elementSetName = c->tasks->u.search.elementSetName;
3632         break;
3633     case ZOOM_TASK_RETRIEVE:
3634         resultset = c->tasks->u.retrieve.resultset;
3635         start = &c->tasks->u.retrieve.start;
3636         syntax = c->tasks->u.retrieve.syntax;
3637         elementSetName = c->tasks->u.retrieve.elementSetName;
3638         break;
3639     default:
3640         return;
3641     }
3642     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3643     ZOOM_connection_put_event(c, event);
3644
3645     resultset->size = 0;
3646
3647     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3648
3649     if (res->numberOfRecords)
3650         resultset->size = *res->numberOfRecords;
3651
3652     for (i = 0; i<res->num_records; i++)
3653     {
3654         int pos;
3655
3656         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3657             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3658
3659         if (res->records[i].recordPosition &&
3660             *res->records[i].recordPosition > 0)
3661             pos = *res->records[i].recordPosition - 1;
3662         else
3663             pos = *start + i;
3664
3665         npr->databaseName = 0;
3666         npr->which = Z_NamePlusRecord_databaseRecord;
3667         npr->u.databaseRecord = (Z_External *)
3668             odr_malloc(c->odr_in, sizeof(Z_External));
3669         npr->u.databaseRecord->descriptor = 0;
3670         npr->u.databaseRecord->direct_reference =
3671             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3672         npr->u.databaseRecord->which = Z_External_octet;
3673
3674         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3675             odr_malloc(c->odr_in, sizeof(Odr_oct));
3676         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3677             res->records[i].recordData_buf;
3678         npr->u.databaseRecord->u.octet_aligned->len =
3679             npr->u.databaseRecord->u.octet_aligned->size =
3680             res->records[i].recordData_len;
3681         record_cache_add(resultset, npr, pos, syntax, elementSetName);
3682     }
3683     if (res->num_diagnostics > 0)
3684     {
3685         const char *uri = res->diagnostics[0].uri;
3686         if (uri)
3687         {
3688             int code = 0;
3689             const char *cp;
3690             if ((cp = strrchr(uri, '/')))
3691                 code = atoi(cp+1);
3692             set_dset_error(c, code, uri,
3693                            res->diagnostics[0].details, 0);
3694         }
3695     }
3696     nmem = odr_extract_mem(c->odr_in);
3697     nmem_transfer(resultset->odr->mem, nmem);
3698     nmem_destroy(nmem);
3699 }
3700 #endif
3701
3702 #if YAZ_HAVE_XML2
3703 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3704 {
3705     int ret = -1;
3706     const char *content_type = z_HTTP_header_lookup(hres->headers,
3707                                                     "Content-Type");
3708     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3709                                                        "Connection");
3710     ZOOM_connection_set_mask(c, 0);
3711     yaz_log(log_details, "%p handle_http", c);
3712
3713     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3714     {
3715         Z_SOAP *soap_package = 0;
3716         ODR o = c->odr_in;
3717         Z_SOAP_Handler soap_handlers[2] = {
3718             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
3719             {0, 0, 0}
3720         };
3721         ret = z_soap_codec(o, &soap_package,
3722                            &hres->content_buf, &hres->content_len,
3723                            soap_handlers);
3724         if (!ret && soap_package->which == Z_SOAP_generic &&
3725             soap_package->u.generic->no == 0)
3726         {
3727             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3728             if (sr->which == Z_SRW_searchRetrieve_response)
3729                 handle_srw_response(c, sr->u.response);
3730             else
3731                 ret = -1;
3732         }
3733         else if (!ret && (soap_package->which == Z_SOAP_fault
3734                           || soap_package->which == Z_SOAP_error))
3735         {
3736             set_HTTP_error(c, hres->code,
3737                            soap_package->u.fault->fault_code,
3738                            soap_package->u.fault->fault_string);
3739         }
3740         else
3741             ret = -1;
3742     }
3743     if (ret)
3744     {
3745         if (hres->code != 200)
3746             set_HTTP_error(c, hres->code, 0, 0);
3747         else
3748             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3749         do_close(c);
3750     }
3751     ZOOM_connection_remove_task(c);
3752     if (!strcmp(hres->version, "1.0"))
3753     {
3754         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3755         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3756             do_close(c);
3757     }
3758     else
3759     {
3760         /* HTTP 1.1: only if no close we stay alive .. */
3761         if (connection_head && !strcmp(connection_head, "close"))
3762             do_close(c);
3763     }
3764 }
3765 #endif
3766
3767 static int do_read(ZOOM_connection c)
3768 {
3769     int r, more;
3770     ZOOM_Event event;
3771
3772     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
3773     ZOOM_connection_put_event(c, event);
3774
3775     r = cs_get(c->cs, &c->buf_in, &c->len_in);
3776     more = cs_more(c->cs);
3777     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3778     if (r == 1)
3779         return 0;
3780     if (r <= 0)
3781     {
3782         if (ZOOM_test_reconnect(c))
3783         {
3784             yaz_log(log_details, "%p do_read reconnect read", c);
3785         }
3786         else
3787         {
3788             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3789             do_close(c);
3790         }
3791     }
3792     else
3793     {
3794         Z_GDU *gdu;
3795         ZOOM_Event event;
3796
3797         odr_reset(c->odr_in);
3798         odr_setbuf(c->odr_in, c->buf_in, r, 0);
3799         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
3800         ZOOM_connection_put_event(c, event);
3801
3802         if (!z_GDU(c->odr_in, &gdu, 0, 0))
3803         {
3804             int x;
3805             int err = odr_geterrorx(c->odr_in, &x);
3806             char msg[60];
3807             const char *element = odr_getelement(c->odr_in);
3808             sprintf(msg, "ODR code %d:%d element=%-20s",
3809                     err, x, element ? element : "<unknown>");
3810             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3811             do_close(c);
3812         }
3813         else if (gdu->which == Z_GDU_Z3950)
3814             recv_apdu(c, gdu->u.z3950);
3815         else if (gdu->which == Z_GDU_HTTP_Response)
3816         {
3817 #if YAZ_HAVE_XML2
3818             handle_http(c, gdu->u.HTTP_Response);
3819 #else
3820             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3821             do_close(c);
3822 #endif
3823         }
3824         c->reconnect_ok = 0;
3825     }
3826     return 1;
3827 }
3828
3829 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
3830 {
3831     int r;
3832     ZOOM_Event event;
3833
3834     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3835     ZOOM_connection_put_event(c, event);
3836
3837     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3838     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3839     {
3840         yaz_log(log_details, "%p do_write_ex write failed", c);
3841         if (ZOOM_test_reconnect(c))
3842         {
3843             return zoom_pending;
3844         }
3845         if (c->state == STATE_CONNECTING)
3846             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3847         else
3848             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3849         do_close(c);
3850         return zoom_complete;
3851     }
3852     else if (r == 1)
3853     {
3854         int mask = ZOOM_SELECT_EXCEPT;
3855         if (c->cs->io_pending & CS_WANT_WRITE)
3856             mask += ZOOM_SELECT_WRITE;
3857         if (c->cs->io_pending & CS_WANT_READ)
3858             mask += ZOOM_SELECT_READ;
3859         ZOOM_connection_set_mask(c, mask);
3860         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3861                 c, c->mask);
3862     }
3863     else
3864     {
3865         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
3866         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3867                 c, c->mask);
3868     }
3869     return zoom_pending;
3870 }
3871
3872 static zoom_ret do_write(ZOOM_connection c)
3873 {
3874     return do_write_ex(c, c->buf_out, c->len_out);
3875 }
3876
3877
3878 ZOOM_API(const char *)
3879     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
3880 {
3881     return ZOOM_options_get(c->options, key);
3882 }
3883
3884 ZOOM_API(const char *)
3885     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
3886 {
3887     return ZOOM_options_getl(c->options, key, lenp);
3888 }
3889
3890 ZOOM_API(void)
3891     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
3892                                const char *val)
3893 {
3894     ZOOM_options_set(c->options, key, val);
3895 }
3896
3897 ZOOM_API(void)
3898     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
3899                                 const char *val, int len)
3900 {
3901     ZOOM_options_setl(c->options, key, val, len);
3902 }
3903
3904 ZOOM_API(const char *)
3905     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
3906 {
3907     return ZOOM_options_get(r->options, key);
3908 }
3909
3910 ZOOM_API(void)
3911     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
3912                               const char *val)
3913 {
3914     ZOOM_options_set(r->options, key, val);
3915 }
3916
3917
3918 ZOOM_API(int)
3919     ZOOM_connection_errcode(ZOOM_connection c)
3920 {
3921     return ZOOM_connection_error(c, 0, 0);
3922 }
3923
3924 ZOOM_API(const char *)
3925     ZOOM_connection_errmsg(ZOOM_connection c)
3926 {
3927     const char *msg;
3928     ZOOM_connection_error(c, &msg, 0);
3929     return msg;
3930 }
3931
3932 ZOOM_API(const char *)
3933     ZOOM_connection_addinfo(ZOOM_connection c)
3934 {
3935     const char *addinfo;
3936     ZOOM_connection_error(c, 0, &addinfo);
3937     return addinfo;
3938 }
3939
3940 ZOOM_API(const char *)
3941     ZOOM_connection_diagset(ZOOM_connection c)
3942 {
3943     const char *diagset;
3944     ZOOM_connection_error_x(c, 0, 0, &diagset);
3945     return diagset;
3946 }
3947
3948 ZOOM_API(const char *)
3949     ZOOM_diag_str(int error)
3950 {
3951     switch (error)
3952     {
3953     case ZOOM_ERROR_NONE:
3954         return "No error";
3955     case ZOOM_ERROR_CONNECT:
3956         return "Connect failed";
3957     case ZOOM_ERROR_MEMORY:
3958         return "Out of memory";
3959     case ZOOM_ERROR_ENCODE:
3960         return "Encoding failed";
3961     case ZOOM_ERROR_DECODE:
3962         return "Decoding failed";
3963     case ZOOM_ERROR_CONNECTION_LOST:
3964         return "Connection lost";
3965     case ZOOM_ERROR_INIT:
3966         return "Init rejected";
3967     case ZOOM_ERROR_INTERNAL:
3968         return "Internal failure";
3969     case ZOOM_ERROR_TIMEOUT:
3970         return "Timeout";
3971     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3972         return "Unsupported protocol";
3973     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3974         return "Unsupported query type";
3975     case ZOOM_ERROR_INVALID_QUERY:
3976         return "Invalid query";
3977     case ZOOM_ERROR_CQL_PARSE:
3978         return "CQL parsing error";
3979     case ZOOM_ERROR_CQL_TRANSFORM:
3980         return "CQL transformation error";
3981     case ZOOM_ERROR_CCL_CONFIG:
3982         return "CCL configuration error";
3983     case ZOOM_ERROR_CCL_PARSE:
3984         return "CCL parsing error";
3985     default:
3986         return diagbib1_str(error);
3987     }
3988 }
3989
3990 ZOOM_API(int)
3991     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
3992                             const char **addinfo, const char **diagset)
3993 {
3994     int error = c->error;
3995     if (cp)
3996     {
3997         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3998             *cp = ZOOM_diag_str(error);
3999         else if (!strcmp(c->diagset, "HTTP"))
4000             *cp = z_HTTP_errmsg(c->error);
4001         else if (!strcmp(c->diagset, "Bib-1"))
4002             *cp = ZOOM_diag_str(error);
4003         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
4004             *cp = yaz_diag_srw_str(c->error);
4005         else
4006             *cp = "Unknown error and diagnostic set";
4007     }
4008     if (addinfo)
4009         *addinfo = c->addinfo ? c->addinfo : "";
4010     if (diagset)
4011         *diagset = c->diagset ? c->diagset : "";
4012     return c->error;
4013 }
4014
4015 ZOOM_API(int)
4016     ZOOM_connection_error(ZOOM_connection c, const char **cp,
4017                           const char **addinfo)
4018 {
4019     return ZOOM_connection_error_x(c, cp, addinfo, 0);
4020 }
4021
4022 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
4023 {
4024     ZOOM_Event event = 0;
4025     int r = cs_look(c->cs);
4026     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
4027             c, mask, r);
4028
4029     if (r == CS_NONE)
4030     {
4031         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4032         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4033         do_close(c);
4034         ZOOM_connection_put_event(c, event);
4035     }
4036     else if (r == CS_CONNECT)
4037     {
4038         int ret = ret = cs_rcvconnect(c->cs);
4039         yaz_log(log_details, "%p ZOOM_connection_do_io "
4040                 "cs_rcvconnect returned %d", c, ret);
4041         if (ret == 1)
4042         {
4043             int mask = ZOOM_SELECT_EXCEPT;
4044             if (c->cs->io_pending & CS_WANT_WRITE)
4045                 mask += ZOOM_SELECT_WRITE;
4046             if (c->cs->io_pending & CS_WANT_READ)
4047                 mask += ZOOM_SELECT_READ;
4048             ZOOM_connection_set_mask(c, mask);
4049         }
4050         else if (ret == 0)
4051         {
4052             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4053             ZOOM_connection_put_event(c, event);
4054             get_cert(c);
4055             if (c->proto == PROTO_Z3950)
4056                 ZOOM_connection_send_init(c);
4057             else
4058             {
4059                 /* no init request for SRW .. */
4060                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4061                 ZOOM_connection_remove_task(c);
4062                 ZOOM_connection_set_mask(c, 0);
4063                 ZOOM_connection_exec_task(c);
4064             }
4065             c->state = STATE_ESTABLISHED;
4066         }
4067         else
4068         {
4069             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4070             do_close(c);
4071         }
4072     }
4073     else
4074     {
4075         if (mask & ZOOM_SELECT_EXCEPT)
4076         {
4077             if (ZOOM_test_reconnect(c))
4078             {
4079                 event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4080                 ZOOM_connection_put_event(c, event);
4081             }
4082             else
4083             {
4084                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4085                 do_close(c);
4086             }
4087             return;
4088         }
4089         if (mask & ZOOM_SELECT_READ)
4090             do_read(c);
4091         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4092             do_write(c);
4093     }
4094 }
4095
4096 ZOOM_API(int)
4097     ZOOM_connection_last_event(ZOOM_connection cs)
4098 {
4099     if (!cs)
4100         return ZOOM_EVENT_NONE;
4101     return cs->last_event;
4102 }
4103
4104
4105 /*
4106  * Returns an xmalloc()d string containing RPN that corresponds to the
4107  * CQL passed in.  On error, sets the Connection object's error state
4108  * and returns a null pointer.
4109  * ### We could cache CQL parser and/or transformer in Connection.
4110  */
4111 static char *cql2pqf(ZOOM_connection c, const char *cql)
4112 {
4113     CQL_parser parser;
4114     int error;
4115     struct cql_node *node;
4116     const char *cqlfile;
4117     static cql_transform_t trans;
4118     char pqfbuf[512];
4119
4120     parser = cql_parser_create();
4121     if ((error = cql_parser_string(parser, cql)) != 0) {
4122         cql_parser_destroy(parser);
4123         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4124         return 0;
4125     }
4126
4127     node = cql_parser_result(parser);
4128     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4129
4130     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4131     if (cqlfile == 0) {
4132         cql_parser_destroy(parser);
4133         cql_node_destroy(node);
4134         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4135         return 0;
4136     }
4137
4138     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4139         char buf[512];
4140         cql_parser_destroy(parser);
4141         cql_node_destroy(node);
4142         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4143                 cqlfile, strerror(errno));
4144         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4145         return 0;
4146     }
4147
4148     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4149     cql_parser_destroy(parser);
4150     cql_node_destroy(node);
4151     if (error != 0) {
4152         char buf[512];
4153         const char *addinfo;
4154         error = cql_transform_error(trans, &addinfo);
4155         cql_transform_close(trans);
4156         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4157         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4158         return 0;
4159     }
4160
4161     cql_transform_close(trans);
4162     return xstrdup(pqfbuf);
4163 }
4164
4165 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4166 {
4167     if (c->mask)
4168     {
4169         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4170         /* timeout and this connection was waiting */
4171         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4172         do_close(c);
4173         ZOOM_connection_put_event(c, event);
4174     }
4175     return 0;
4176 }
4177
4178 ZOOM_API(int)
4179     ZOOM_connection_process(ZOOM_connection c)
4180 {
4181     ZOOM_Event event;
4182     if (!c)
4183         return 0;
4184
4185     event = ZOOM_connection_get_event(c);
4186     if (event)
4187     {
4188         ZOOM_Event_destroy(event);
4189         return 1;
4190     }
4191     ZOOM_connection_exec_task(c);
4192     event = ZOOM_connection_get_event(c);
4193     if (event)
4194     {
4195         ZOOM_Event_destroy(event);
4196         return 1;
4197     }
4198     return 0;
4199 }
4200
4201 ZOOM_API(int)
4202     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
4203 {
4204     int i;
4205
4206     yaz_log(log_details, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
4207
4208     for (i = 0; i<no; i++)
4209     {
4210         ZOOM_connection c = cs[i];
4211
4212         if (c && ZOOM_connection_process(c))
4213             return i+1;
4214     }
4215     return 0;
4216 }
4217
4218 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4219 {
4220     if (c->mask && mask)
4221         ZOOM_connection_do_io(c, mask);
4222     return 0;
4223 }
4224
4225 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4226 {
4227     if (c->cs)
4228         return cs_fileno(c->cs);
4229     return -1;
4230 }
4231
4232 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4233 {
4234     c->mask = mask;
4235     if (!c->cs)
4236         return -1;
4237     return 0;
4238 }
4239
4240 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4241 {
4242     if (c->cs)
4243         return c->mask;
4244     return 0;
4245 }
4246
4247 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4248 {
4249     return ZOOM_options_get_int(c->options, "timeout", 30);
4250 }
4251
4252 /*
4253  * Local variables:
4254  * c-basic-offset: 4
4255  * indent-tabs-mode: nil
4256  * End:
4257  * vim: shiftwidth=4 tabstop=8 expandtab
4258  */
4259