src/zoom-c.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2010 Index Data
   3  * See the file LICENSE for details.
   4  */
   5 /**
   6  * \file zoom-c.c
   7  * \brief Implements ZOOM C interface.
   8  */
   9
  10 #include <assert.h>
  11 #include <string.h>
  12 #include <errno.h>
  13 #include "zoom-p.h"
  14
  15 #include <yaz/yaz-util.h>
  16 #include <yaz/xmalloc.h>
  17 #include <yaz/otherinfo.h>
  18 #include <yaz/log.h>
  19 #include <yaz/pquery.h>
  20 #include <yaz/marcdisp.h>
  21 #include <yaz/diagbib1.h>
  22 #include <yaz/charneg.h>
  23 #include <yaz/ill.h>
  24 #include <yaz/srw.h>
  25 #include <yaz/cql.h>
  26 #include <yaz/ccl.h>
  27 #include <yaz/query-charset.h>
  28 #include <yaz/copy_types.h>
  29 #include <yaz/snprintf.h>
  30
  31 static int log_api = 0;
  32 static int log_details = 0;
  33
  34 typedef enum {
  35     zoom_pending,
  36     zoom_complete
  37 } zoom_ret;
  38
  39 static void resultset_destroy(ZOOM_resultset r);
  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 ZOOM_API(const char *) ZOOM_get_event_str(int event)
  45 {
  46     static const char *ar[] = {
  47         "NONE",
  48         "CONNECT",
  49         "SEND_DATA",
  50         "RECV_DATA",
  51         "TIMEOUT",
  52         "UNKNOWN",
  53         "SEND_APDU",
  54         "RECV_APDU",
  55         "RECV_RECORD",
  56         "RECV_SEARCH",
  57         "END"
  58     };
  59     return ar[event];
  60 }
  61
  62 /*
  63  * This wrapper is just for logging failed lookups.  It would be nicer
  64  * if it could cause failure when a lookup fails, but that's hard.
  65  */
  66 static Odr_oid *zoom_yaz_str_to_z3950oid(ZOOM_connection c,
  67                                      oid_class oid_class, const char *str) {
  68     Odr_oid *res = yaz_string_to_oid_odr(yaz_oid_std(), oid_class, str,
  69                                      c->odr_out);
  70     if (res == 0)
  71         yaz_log(YLOG_WARN, "%p OID lookup (%d, '%s') failed",
  72                 c, (int) oid_class, str);
  73     return res;
  74 }
  75
  76
  77 static void initlog(void)
  78 {
  79     static int log_level_initialized = 0;
  80     if (!log_level_initialized)
  81     {
  82         log_api = yaz_log_module_level("zoom");
  83         log_details = yaz_log_module_level("zoomdetails");
  84         log_level_initialized = 1;
  85     }
  86 }
  87
  88 static ZOOM_Event ZOOM_Event_create(int kind)
  89 {
  90     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  91     event->kind = kind;
  92     event->next = 0;
  93     event->prev = 0;
  94     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
  95     return event;
  96 }
  97
  98 static void ZOOM_Event_destroy(ZOOM_Event event)
  99 {
 100     xfree(event);
 101 }
 102
 103 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
 104 {
 105     if (c->m_queue_back)
 106     {
 107         c->m_queue_back->prev = event;
 108         assert(c->m_queue_front);
 109     }
 110     else
 111     {
 112         assert(!c->m_queue_front);
 113         c->m_queue_front = event;
 114     }
 115     event->next = c->m_queue_back;
 116     event->prev = 0;
 117     c->m_queue_back = event;
 118 }
 119
 120 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 121 {
 122     ZOOM_Event event = c->m_queue_front;
 123     if (!event)
 124     {
 125         c->last_event = ZOOM_EVENT_NONE;
 126         return 0;
 127     }
 128     assert(c->m_queue_back);
 129     c->m_queue_front = event->prev;
 130     if (c->m_queue_front)
 131     {
 132         assert(c->m_queue_back);
 133         c->m_queue_front->next = 0;
 134     }
 135     else
 136         c->m_queue_back = 0;
 137     c->last_event = event->kind;
 138     return event;
 139 }
 140
 141 static void ZOOM_connection_remove_events(ZOOM_connection c)
 142 {
 143     ZOOM_Event event;
 144     while ((event = ZOOM_connection_get_event(c)))
 145         ZOOM_Event_destroy(event);
 146 }
 147
 148 ZOOM_API(int) ZOOM_connection_peek_event(ZOOM_connection c)
 149 {
 150     ZOOM_Event event = c->m_queue_front;
 151
 152     return event ? event->kind : ZOOM_EVENT_NONE;
 153 }
 154
 155 void ZOOM_connection_remove_tasks(ZOOM_connection c);
 156
 157 static void set_dset_error(ZOOM_connection c, int error,
 158                            const char *dset,
 159                            const char *addinfo, const char *addinfo2)
 160 {
 161     char *cp;
 162
 163     xfree(c->addinfo);
 164     c->addinfo = 0;
 165     c->error = error;
 166     if (!c->diagset || strcmp(dset, c->diagset))
 167     {
 168         xfree(c->diagset);
 169         c->diagset = xstrdup(dset);
 170         /* remove integer part from SRW diagset .. */
 171         if ((cp = strrchr(c->diagset, '/')))
 172             *cp = '\0';
 173     }
 174     if (addinfo && addinfo2)
 175     {
 176         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 177         strcpy(c->addinfo, addinfo);
 178         strcat(c->addinfo, addinfo2);
 179     }
 180     else if (addinfo)
 181         c->addinfo = xstrdup(addinfo);
 182     if (error != ZOOM_ERROR_NONE)
 183     {
 184         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 185                 c, c->host_port ? c->host_port : "<>", dset, error,
 186                 addinfo ? addinfo : "",
 187                 addinfo2 ? addinfo2 : "");
 188         ZOOM_connection_remove_tasks(c);
 189     }
 190 }
 191
 192 static int uri_to_code(const char *uri)
 193 {
 194     int code = 0;
 195     const char *cp;
 196     if ((cp = strrchr(uri, '/')))
 197         code = atoi(cp+1);
 198     return code;
 199 }
 200
 201 #if YAZ_HAVE_XML2
 202 static void set_HTTP_error(ZOOM_connection c, int error,
 203                            const char *addinfo, const char *addinfo2)
 204 {
 205     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 206 }
 207
 208 static void set_SRU_error(ZOOM_connection c, Z_SRW_diagnostic *d)
 209 {
 210     const char *uri = d->uri;
 211     if (uri)
 212         set_dset_error(c, uri_to_code(uri), uri, d->details, 0);
 213 }
 214
 215 #endif
 216
 217
 218 static void set_ZOOM_error(ZOOM_connection c, int error,
 219                            const char *addinfo)
 220 {
 221     set_dset_error(c, error, "ZOOM", addinfo, 0);
 222 }
 223
 224 static void clear_error(ZOOM_connection c)
 225 {
 226     /*
 227      * If an error is tied to an operation then it's ok to clear: for
 228      * example, a diagnostic returned from a search is cleared by a
 229      * subsequent search.  However, problems such as Connection Lost
 230      * or Init Refused are not cleared, because they are not
 231      * recoverable: doing another search doesn't help.
 232      */
 233
 234     ZOOM_connection_remove_events(c);
 235     switch (c->error)
 236     {
 237     case ZOOM_ERROR_CONNECT:
 238     case ZOOM_ERROR_MEMORY:
 239     case ZOOM_ERROR_DECODE:
 240     case ZOOM_ERROR_CONNECTION_LOST:
 241     case ZOOM_ERROR_INIT:
 242     case ZOOM_ERROR_INTERNAL:
 243     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 244         break;
 245     default:
 246         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 247     }
 248 }
 249
 250 void ZOOM_connection_show_task(ZOOM_task task)
 251 {
 252     switch(task->which)
 253     {
 254     case ZOOM_TASK_SEARCH:
 255         yaz_log(YLOG_LOG, "search p=%p", task);
 256         break;
 257     case ZOOM_TASK_RETRIEVE:
 258         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 259         break;
 260     case ZOOM_TASK_CONNECT:
 261         yaz_log(YLOG_LOG, "connect p=%p", task);
 262         break;
 263     case ZOOM_TASK_SCAN:
 264         yaz_log(YLOG_LOG, "scan p=%p", task);
 265         break;
 266     }
 267 }
 268
 269 void ZOOM_connection_show_tasks(ZOOM_connection c)
 270 {
 271     ZOOM_task task;
 272     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 273     for (task = c->tasks; task; task = task->next)
 274         ZOOM_connection_show_task(task);
 275 }
 276
 277 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 278 {
 279     ZOOM_task *taskp = &c->tasks;
 280     while (*taskp)
 281         taskp = &(*taskp)->next;
 282     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 283     (*taskp)->running = 0;
 284     (*taskp)->which = which;
 285     (*taskp)->next = 0;
 286     clear_error(c);
 287     return *taskp;
 288 }
 289
 290 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 291 {
 292     return c->tasks ? 0 : 1;
 293 }
 294
 295 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 296 {
 297     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 298
 299     task->next = c->tasks;
 300     c->tasks = task;
 301
 302     task->running = 0;
 303     task->which = which;
 304     clear_error(c);
 305     return task;
 306 }
 307
 308 void ZOOM_connection_remove_task(ZOOM_connection c)
 309 {
 310     ZOOM_task task = c->tasks;
 311
 312     if (task)
 313     {
 314         c->tasks = task->next;
 315         switch (task->which)
 316         {
 317         case ZOOM_TASK_SEARCH:
 318             resultset_destroy(task->u.search.resultset);
 319             xfree(task->u.search.syntax);
 320             xfree(task->u.search.elementSetName);
 321             break;
 322         case ZOOM_TASK_RETRIEVE:
 323             resultset_destroy(task->u.retrieve.resultset);
 324             xfree(task->u.retrieve.syntax);
 325             xfree(task->u.retrieve.elementSetName);
 326             break;
 327         case ZOOM_TASK_CONNECT:
 328             break;
 329         case ZOOM_TASK_SCAN:
 330             ZOOM_scanset_destroy(task->u.scan.scan);
 331             break;
 332         case ZOOM_TASK_PACKAGE:
 333             ZOOM_package_destroy(task->u.package);
 334             break;
 335         case ZOOM_TASK_SORT:
 336             resultset_destroy(task->u.sort.resultset);
 337             ZOOM_query_destroy(task->u.sort.q);
 338             break;
 339         default:
 340             assert(0);
 341         }
 342         xfree(task);
 343
 344         if (!c->tasks)
 345         {
 346             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 347             ZOOM_connection_put_event(c, event);
 348         }
 349     }
 350 }
 351
 352 static int ZOOM_connection_exec_task(ZOOM_connection c);
 353
 354 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 355 {
 356     while (c->tasks)
 357         ZOOM_connection_remove_task(c);
 358 }
 359
 360 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 361                                        const char *syntax,
 362                                        const char *elementSetName);
 363
 364 ZOOM_API(ZOOM_connection)
 365     ZOOM_connection_create(ZOOM_options options)
 366 {
 367     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 368
 369     initlog();
 370
 371     yaz_log(log_api, "%p ZOOM_connection_create", c);
 372
 373     c->proto = PROTO_Z3950;
 374     c->cs = 0;
 375     ZOOM_connection_set_mask(c, 0);
 376     c->reconnect_ok = 0;
 377     c->state = STATE_IDLE;
 378     c->addinfo = 0;
 379     c->diagset = 0;
 380     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 381     c->buf_in = 0;
 382     c->len_in = 0;
 383     c->buf_out = 0;
 384     c->len_out = 0;
 385     c->resultsets = 0;
 386
 387     c->options = ZOOM_options_create_with_parent(options);
 388
 389     c->host_port = 0;
 390     c->path = 0;
 391     c->proxy = 0;
 392
 393     c->charset = c->lang = 0;
 394
 395     c->cookie_out = 0;
 396     c->cookie_in = 0;
 397     c->client_IP = 0;
 398     c->tasks = 0;
 399
 400     c->user = 0;
 401     c->group = 0;
 402     c->password = 0;
 403
 404     c->maximum_record_size = 0;
 405     c->preferred_message_size = 0;
 406
 407     c->odr_in = odr_createmem(ODR_DECODE);
 408     c->odr_out = odr_createmem(ODR_ENCODE);
 409     c->odr_print = 0;
 410
 411     c->async = 0;
 412     c->support_named_resultsets = 0;
 413     c->last_event = ZOOM_EVENT_NONE;
 414
 415     c->m_queue_front = 0;
 416     c->m_queue_back = 0;
 417
 418     c->sru_version = 0;
 419     return c;
 420 }
 421
 422
 423 /* set database names. Take local databases (if set); otherwise
 424    take databases given in ZURL (if set); otherwise use Default */
 425 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 426                                 int *num, ODR odr)
 427 {
 428     char **databaseNames;
 429     const char *cp = ZOOM_options_get(options, "databaseName");
 430
 431     if ((!cp || !*cp) && con->host_port)
 432     {
 433         if (strncmp(con->host_port, "unix:", 5) == 0)
 434             cp = strchr(con->host_port+5, ':');
 435         else
 436             cp = strchr(con->host_port, '/');
 437         if (cp)
 438             cp++;
 439     }
 440     if (!cp)
 441         cp = "Default";
 442     nmem_strsplit(odr_getmem(odr), "+", cp,  &databaseNames, num);
 443     return databaseNames;
 444 }
 445
 446 ZOOM_API(ZOOM_connection)
 447     ZOOM_connection_new(const char *host, int portnum)
 448 {
 449     ZOOM_connection c = ZOOM_connection_create(0);
 450
 451     ZOOM_connection_connect(c, host, portnum);
 452     return c;
 453 }
 454
 455 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 456 {
 457     if (!s || !*s)
 458         return zoom_sru_soap;
 459     if (!yaz_matchstr(s, "soap"))
 460         return zoom_sru_soap;
 461     else if (!yaz_matchstr(s, "get"))
 462         return zoom_sru_get;
 463     else if (!yaz_matchstr(s, "post"))
 464         return zoom_sru_post;
 465     return zoom_sru_error;
 466 }
 467
 468 ZOOM_API(void)
 469     ZOOM_connection_connect(ZOOM_connection c,
 470                             const char *host, int portnum)
 471 {
 472     const char *val;
 473     ZOOM_task task;
 474
 475     initlog();
 476
 477     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 478             c, host ? host : "null", portnum);
 479
 480     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 481     ZOOM_connection_remove_tasks(c);
 482
 483     if (c->odr_print)
 484     {
 485         odr_setprint(c->odr_print, 0); /* prevent destroy from fclose'ing */
 486         odr_destroy(c->odr_print);
 487     }
 488     if (ZOOM_options_get_bool(c->options, "apdulog", 0))
 489     {
 490         c->odr_print = odr_createmem(ODR_PRINT);
 491         odr_setprint(c->odr_print, yaz_log_file());
 492     }
 493     else
 494         c->odr_print = 0;
 495
 496     if (c->cs)
 497     {
 498         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 499         c->reconnect_ok = 1;
 500         return;
 501     }
 502     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 503     xfree(c->proxy);
 504     c->proxy = 0;
 505     val = ZOOM_options_get(c->options, "proxy");
 506     if (val && *val)
 507     {
 508         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 509         c->proxy = xstrdup(val);
 510     }
 511
 512     xfree(c->charset);
 513     c->charset = 0;
 514     val = ZOOM_options_get(c->options, "charset");
 515     if (val && *val)
 516     {
 517         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 518         c->charset = xstrdup(val);
 519     }
 520
 521     xfree(c->lang);
 522     val = ZOOM_options_get(c->options, "lang");
 523     if (val && *val)
 524     {
 525         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 526         c->lang = xstrdup(val);
 527     }
 528     else
 529         c->lang = 0;
 530
 531     if (host)
 532     {
 533         xfree(c->host_port);
 534         if (portnum)
 535         {
 536             char hostn[128];
 537             sprintf(hostn, "%.80s:%d", host, portnum);
 538             c->host_port = xstrdup(hostn);
 539         }
 540         else
 541             c->host_port = xstrdup(host);
 542     }
 543
 544     {
 545         /*
 546          * If the "<scheme>:" part of the host string is preceded by one
 547          * or more comma-separated <name>=<value> pairs, these are taken
 548          * to be options to be set on the connection object.  Among other
 549          * applications, this facility can be used to embed authentication
 550          * in a host string:
 551          *          user=admin,password=secret,tcp:localhost:9999
 552          */
 553         char *remainder = c->host_port;
 554         char *pcolon = strchr(remainder, ':');
 555         char *pcomma;
 556         char *pequals;
 557         while ((pcomma = strchr(remainder, ',')) != 0 &&
 558                (pcolon == 0 || pcomma < pcolon)) {
 559             *pcomma = '\0';
 560             if ((pequals = strchr(remainder, '=')) != 0) {
 561                 *pequals = '\0';
 562                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 563                 ZOOM_connection_option_set(c, remainder, pequals+1);
 564             }
 565             remainder = pcomma+1;
 566         }
 567
 568         if (remainder != c->host_port) {
 569             xfree(c->host_port);
 570             c->host_port = xstrdup(remainder);
 571             /*printf("# reset hp='%s'\n", remainder);*/
 572         }
 573     }
 574
 575     val = ZOOM_options_get(c->options, "sru");
 576     c->sru_mode = get_sru_mode_from_string(val);
 577
 578     xfree(c->sru_version);
 579     val = ZOOM_options_get(c->options, "sru_version");
 580     c->sru_version = xstrdup(val ? val : "1.2");
 581
 582     ZOOM_options_set(c->options, "host", c->host_port);
 583
 584     xfree(c->cookie_out);
 585     c->cookie_out = 0;
 586     val = ZOOM_options_get(c->options, "cookie");
 587     if (val && *val)
 588     {
 589         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 590         c->cookie_out = xstrdup(val);
 591     }
 592
 593     xfree(c->client_IP);
 594     c->client_IP = 0;
 595     val = ZOOM_options_get(c->options, "clientIP");
 596     if (val && *val)
 597     {
 598         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 599                 c, val);
 600         c->client_IP = xstrdup(val);
 601     }
 602
 603     xfree(c->group);
 604     c->group = 0;
 605     val = ZOOM_options_get(c->options, "group");
 606     if (val && *val)
 607         c->group = xstrdup(val);
 608
 609     xfree(c->user);
 610     c->user = 0;
 611     val = ZOOM_options_get(c->options, "user");
 612     if (val && *val)
 613         c->user = xstrdup(val);
 614
 615     xfree(c->password);
 616     c->password = 0;
 617     val = ZOOM_options_get(c->options, "password");
 618     if (!val)
 619         val = ZOOM_options_get(c->options, "pass");
 620
 621     if (val && *val)
 622         c->password = xstrdup(val);
 623
 624     c->maximum_record_size =
 625         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
 626     c->preferred_message_size =
 627         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
 628
 629     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 630     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 631
 632     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 633
 634     if (!c->async)
 635     {
 636         while (ZOOM_event(1, &c))
 637             ;
 638     }
 639 }
 640
 641 ZOOM_API(ZOOM_query)
 642     ZOOM_query_create(void)
 643 {
 644     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 645
 646     yaz_log(log_details, "%p ZOOM_query_create", s);
 647     s->refcount = 1;
 648     s->z_query = 0;
 649     s->sort_spec = 0;
 650     s->odr = odr_createmem(ODR_ENCODE);
 651     s->query_string = 0;
 652
 653     return s;
 654 }
 655
 656 ZOOM_API(void)
 657     ZOOM_query_destroy(ZOOM_query s)
 658 {
 659     if (!s)
 660         return;
 661
 662     (s->refcount)--;
 663     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 664     if (s->refcount == 0)
 665     {
 666         odr_destroy(s->odr);
 667         xfree(s);
 668     }
 669 }
 670
 671 ZOOM_API(int)
 672     ZOOM_query_prefix(ZOOM_query s, const char *str)
 673 {
 674     s->query_string = odr_strdup(s->odr, str);
 675     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 676     s->z_query->which = Z_Query_type_1;
 677     s->z_query->u.type_1 =  p_query_rpn(s->odr, str);
 678     if (!s->z_query->u.type_1)
 679     {
 680         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 681         s->z_query = 0;
 682         return -1;
 683     }
 684     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 685     return 0;
 686 }
 687
 688 ZOOM_API(int)
 689     ZOOM_query_cql(ZOOM_query s, const char *str)
 690 {
 691     Z_External *ext;
 692
 693     s->query_string = odr_strdup(s->odr, str);
 694
 695     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 696     ext->direct_reference = odr_oiddup(s->odr, yaz_oid_userinfo_cql);
 697     ext->indirect_reference = 0;
 698     ext->descriptor = 0;
 699     ext->which = Z_External_CQL;
 700     ext->u.cql = s->query_string;
 701
 702     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 703     s->z_query->which = Z_Query_type_104;
 704     s->z_query->u.type_104 =  ext;
 705
 706     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 707
 708     return 0;
 709 }
 710
 711 /*
 712  * Translate the CQL string client-side into RPN which is passed to
 713  * the server.  This is useful for server's that don't themselves
 714  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 715  * only as a place to stash diagnostics if compilation fails; if this
 716  * information is not needed, a null pointer may be used.
 717  */
 718 ZOOM_API(int)
 719     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 720 {
 721     char *rpn;
 722     int ret;
 723     ZOOM_connection freeme = 0;
 724
 725     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 726     if (conn == 0)
 727         conn = freeme = ZOOM_connection_create(0);
 728
 729     rpn = cql2pqf(conn, str);
 730     if (freeme != 0)
 731         ZOOM_connection_destroy(freeme);
 732     if (rpn == 0)
 733         return -1;
 734
 735     ret = ZOOM_query_prefix(s, rpn);
 736     xfree(rpn);
 737     return ret;
 738 }
 739
 740 /*
 741  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 742  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 743  * to the server, as the YAZ GFS doesn't know how to handle this.
 744  */
 745 ZOOM_API(int)
 746     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 747                        int *ccl_error, const char **error_string,
 748                        int *error_pos)
 749 {
 750     int ret;
 751     struct ccl_rpn_node *rpn;
 752     CCL_bibset bibset = ccl_qual_mk();
 753
 754     if (config)
 755         ccl_qual_buf(bibset, config);
 756
 757     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 758     if (!rpn)
 759     {
 760         *error_string = ccl_err_msg(*ccl_error);
 761         ret = -1;
 762     }
 763     else
 764     {
 765         WRBUF wr = wrbuf_alloc();
 766         ccl_pquery(wr, rpn);
 767         ccl_rpn_delete(rpn);
 768         ret = ZOOM_query_prefix(s, wrbuf_cstr(wr));
 769         wrbuf_destroy(wr);
 770     }
 771     ccl_qual_rm(&bibset);
 772     return ret;
 773 }
 774
 775 ZOOM_API(int)
 776     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 777 {
 778     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 779     if (!s->sort_spec)
 780     {
 781         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 782                 s, criteria);
 783         return -1;
 784     }
 785     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 786     return 0;
 787 }
 788
 789 static zoom_ret do_write(ZOOM_connection c);
 790
 791 ZOOM_API(void)
 792     ZOOM_connection_destroy(ZOOM_connection c)
 793 {
 794     ZOOM_resultset r;
 795     if (!c)
 796         return;
 797     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 798     if (c->cs)
 799         cs_close(c->cs);
 800     for (r = c->resultsets; r; r = r->next)
 801         r->connection = 0;
 802
 803     xfree(c->buf_in);
 804     xfree(c->addinfo);
 805     xfree(c->diagset);
 806     odr_destroy(c->odr_in);
 807     odr_destroy(c->odr_out);
 808     if (c->odr_print)
 809     {
 810         odr_setprint(c->odr_print, 0); /* prevent destroy from fclose'ing */
 811         odr_destroy(c->odr_print);
 812     }
 813     ZOOM_options_destroy(c->options);
 814     ZOOM_connection_remove_tasks(c);
 815     ZOOM_connection_remove_events(c);
 816     xfree(c->host_port);
 817     xfree(c->path);
 818     xfree(c->proxy);
 819     xfree(c->charset);
 820     xfree(c->lang);
 821     xfree(c->cookie_out);
 822     xfree(c->cookie_in);
 823     xfree(c->client_IP);
 824     xfree(c->user);
 825     xfree(c->group);
 826     xfree(c->password);
 827     xfree(c->sru_version);
 828     xfree(c);
 829 }
 830
 831 void ZOOM_resultset_addref(ZOOM_resultset r)
 832 {
 833     if (r)
 834     {
 835         (r->refcount)++;
 836         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 837                 r, r->refcount);
 838     }
 839 }
 840
 841 ZOOM_resultset ZOOM_resultset_create(void)
 842 {
 843     int i;
 844     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 845
 846     initlog();
 847
 848     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 849     r->refcount = 1;
 850     r->size = 0;
 851     r->odr = odr_createmem(ODR_ENCODE);
 852     r->piggyback = 1;
 853     r->setname = 0;
 854     r->schema = 0;
 855     r->step = 0;
 856     for (i = 0; i<RECORD_HASH_SIZE; i++)
 857         r->record_hash[i] = 0;
 858     r->r_sort_spec = 0;
 859     r->query = 0;
 860     r->connection = 0;
 861     r->next = 0;
 862     r->databaseNames = 0;
 863     r->num_databaseNames = 0;
 864     return r;
 865 }
 866
 867 ZOOM_API(ZOOM_resultset)
 868     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 869 {
 870     ZOOM_resultset r;
 871     ZOOM_query s = ZOOM_query_create();
 872
 873     ZOOM_query_prefix(s, q);
 874
 875     r = ZOOM_connection_search(c, s);
 876     ZOOM_query_destroy(s);
 877     return r;
 878 }
 879
 880 ZOOM_API(ZOOM_resultset)
 881     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 882 {
 883     ZOOM_resultset r = ZOOM_resultset_create();
 884     ZOOM_task task;
 885     const char *cp;
 886     int start, count;
 887     const char *syntax, *elementSetName;
 888
 889     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 890     r->r_sort_spec = q->sort_spec;
 891     r->query = q;
 892
 893     r->options = ZOOM_options_create_with_parent(c->options);
 894
 895     start = ZOOM_options_get_int(r->options, "start", 0);
 896     count = ZOOM_options_get_int(r->options, "count", 0);
 897     {
 898         /* If "presentChunk" is defined use that; otherwise "step" */
 899         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 900         r->step = ZOOM_options_get_int(r->options,
 901                                        (cp != 0 ? "presentChunk": "step"), 0);
 902     }
 903     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 904     cp = ZOOM_options_get(r->options, "setname");
 905     if (cp)
 906         r->setname = xstrdup(cp);
 907     cp = ZOOM_options_get(r->options, "schema");
 908     if (cp)
 909         r->schema = xstrdup(cp);
 910
 911     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 912                                          r->odr);
 913
 914     r->connection = c;
 915
 916     r->next = c->resultsets;
 917     c->resultsets = r;
 918
 919
 920
 921     if (c->host_port && c->proto == PROTO_HTTP)
 922     {
 923         if (!c->cs)
 924         {
 925             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 926             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 927         }
 928         else
 929         {
 930             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 931             c->reconnect_ok = 1;
 932         }
 933     }
 934
 935     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 936     task->u.search.resultset = r;
 937     task->u.search.start = start;
 938     task->u.search.count = count;
 939     task->u.search.recv_search_fired = 0;
 940
 941     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 942     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 943     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 944     task->u.search.elementSetName = elementSetName
 945         ? xstrdup(elementSetName) : 0;
 946
 947     ZOOM_resultset_addref(r);
 948
 949     (q->refcount)++;
 950
 951     if (!c->async)
 952     {
 953         while (ZOOM_event(1, &c))
 954             ;
 955     }
 956     return r;
 957 }
 958
 959 ZOOM_API(void)
 960     ZOOM_resultset_sort(ZOOM_resultset r,
 961                          const char *sort_type, const char *sort_spec)
 962 {
 963     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 964 }
 965
 966 ZOOM_API(int)
 967     ZOOM_resultset_sort1(ZOOM_resultset r,
 968                          const char *sort_type, const char *sort_spec)
 969 {
 970     ZOOM_connection c = r->connection;
 971     ZOOM_task task;
 972     ZOOM_query newq;
 973
 974     newq = ZOOM_query_create();
 975     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 976         return -1;
 977
 978     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 979             r, r, sort_type, sort_spec);
 980     if (!c)
 981         return 0;
 982
 983     if (c->host_port && c->proto == PROTO_HTTP)
 984     {
 985         if (!c->cs)
 986         {
 987             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 988             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 989         }
 990         else
 991         {
 992             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 993                     r);
 994             c->reconnect_ok = 1;
 995         }
 996     }
 997
 998     ZOOM_resultset_cache_reset(r);
 999     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
1000     task->u.sort.resultset = r;
1001     task->u.sort.q = newq;
1002
1003     ZOOM_resultset_addref(r);
1004
1005     if (!c->async)
1006     {
1007         while (ZOOM_event(1, &c))
1008             ;
1009     }
1010
1011     return 0;
1012 }
1013
1014 static void ZOOM_record_release(ZOOM_record rec)
1015 {
1016     if (!rec)
1017         return;
1018     if (rec->wrbuf)
1019         wrbuf_destroy(rec->wrbuf);
1020 #if YAZ_HAVE_XML2
1021     if (rec->xml_mem)
1022         xmlFree(rec->xml_mem);
1023 #endif
1024     if (rec->odr)
1025         odr_destroy(rec->odr);
1026 }
1027
1028 ZOOM_API(void)
1029     ZOOM_resultset_cache_reset(ZOOM_resultset r)
1030 {
1031     int i;
1032     for (i = 0; i<RECORD_HASH_SIZE; i++)
1033     {
1034         ZOOM_record_cache rc;
1035         for (rc = r->record_hash[i]; rc; rc = rc->next)
1036         {
1037             ZOOM_record_release(&rc->rec);
1038         }
1039         r->record_hash[i] = 0;
1040     }
1041 }
1042
1043 ZOOM_API(void)
1044     ZOOM_resultset_destroy(ZOOM_resultset r)
1045 {
1046     resultset_destroy(r);
1047 }
1048
1049 static void resultset_destroy(ZOOM_resultset r)
1050 {
1051     if (!r)
1052         return;
1053     (r->refcount)--;
1054     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
1055             r, r, r->refcount);
1056     if (r->refcount == 0)
1057     {
1058         ZOOM_resultset_cache_reset(r);
1059
1060         if (r->connection)
1061         {
1062             /* remove ourselves from the resultsets in connection */
1063             ZOOM_resultset *rp = &r->connection->resultsets;
1064             while (1)
1065             {
1066                 assert(*rp);   /* we must be in this list!! */
1067                 if (*rp == r)
1068                 {   /* OK, we're here - take us out of it */
1069                     *rp = (*rp)->next;
1070                     break;
1071                 }
1072                 rp = &(*rp)->next;
1073             }
1074         }
1075         ZOOM_query_destroy(r->query);
1076         ZOOM_options_destroy(r->options);
1077         odr_destroy(r->odr);
1078         xfree(r->setname);
1079         xfree(r->schema);
1080         xfree(r);
1081     }
1082 }
1083
1084 ZOOM_API(size_t)
1085     ZOOM_resultset_size(ZOOM_resultset r)
1086 {
1087     yaz_log(log_details, "ZOOM_resultset_size r=%p count=" ODR_INT_PRINTF,
1088             r, r->size);
1089     return r->size;
1090 }
1091
1092 static void do_close(ZOOM_connection c)
1093 {
1094     if (c->cs)
1095         cs_close(c->cs);
1096     c->cs = 0;
1097     ZOOM_connection_set_mask(c, 0);
1098     c->state = STATE_IDLE;
1099 }
1100
1101 static int ZOOM_test_reconnect(ZOOM_connection c)
1102 {
1103     ZOOM_Event event;
1104
1105     if (!c->reconnect_ok)
1106         return 0;
1107     do_close(c);
1108     c->reconnect_ok = 0;
1109     c->tasks->running = 0;
1110     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
1111
1112     event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1113     ZOOM_connection_put_event(c, event);
1114
1115     return 1;
1116 }
1117
1118 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
1119                                     int force_sync, int start, int count)
1120 {
1121     ZOOM_task task;
1122     ZOOM_connection c;
1123     const char *cp;
1124     const char *syntax, *elementSetName;
1125
1126     if (!r)
1127         return;
1128     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
1129             " count=%d", r, force_sync, start, count);
1130     c = r->connection;
1131     if (!c)
1132         return;
1133
1134     if (c->host_port && c->proto == PROTO_HTTP)
1135     {
1136         if (!c->cs)
1137         {
1138             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
1139             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1140         }
1141         else
1142         {
1143             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1144                     "reconnect", r);
1145             c->reconnect_ok = 1;
1146         }
1147     }
1148     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1149     task->u.retrieve.resultset = r;
1150     task->u.retrieve.start = start;
1151     task->u.retrieve.count = count;
1152
1153     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1154     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1155     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1156     task->u.retrieve.elementSetName = elementSetName
1157         ? xstrdup(elementSetName) : 0;
1158
1159     cp = ZOOM_options_get(r->options, "schema");
1160     if (cp)
1161     {
1162         if (!r->schema || strcmp(r->schema, cp))
1163         {
1164             xfree(r->schema);
1165             r->schema = xstrdup(cp);
1166         }
1167     }
1168
1169     ZOOM_resultset_addref(r);
1170
1171     if (!r->connection->async || force_sync)
1172         while (r->connection && ZOOM_event(1, &r->connection))
1173             ;
1174 }
1175
1176 ZOOM_API(void)
1177     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1178                            size_t start, size_t count)
1179 {
1180     int force_present = 0;
1181
1182     if (!r)
1183         return ;
1184     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1185             r, r, (long) start, (long) count);
1186     if (count && recs)
1187         force_present = 1;
1188     ZOOM_resultset_retrieve(r, force_present, start, count);
1189     if (force_present)
1190     {
1191         size_t i;
1192         for (i = 0; i< count; i++)
1193             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1194     }
1195 }
1196
1197 static void get_cert(ZOOM_connection c)
1198 {
1199     char *cert_buf;
1200     int cert_len;
1201
1202     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1203     {
1204         ZOOM_connection_option_setl(c, "sslPeerCert",
1205                                     cert_buf, cert_len);
1206         xfree(cert_buf);
1207     }
1208 }
1209
1210 static zoom_ret do_connect(ZOOM_connection c)
1211 {
1212     void *add;
1213     const char *effective_host;
1214
1215     if (c->proxy)
1216         effective_host = c->proxy;
1217     else
1218         effective_host = c->host_port;
1219
1220     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1221
1222     if (c->cs)
1223         cs_close(c->cs);
1224     c->cs = cs_create_host(effective_host, 0, &add);
1225
1226     if (c->cs && c->cs->protocol == PROTO_HTTP)
1227     {
1228 #if YAZ_HAVE_XML2
1229         const char *db = 0;
1230
1231         c->proto = PROTO_HTTP;
1232         cs_get_host_args(c->host_port, &db);
1233         xfree(c->path);
1234
1235         c->path = xmalloc(strlen(db) * 3 + 2);
1236         yaz_encode_sru_dbpath_buf(c->path, db);
1237 #else
1238         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1239         do_close(c);
1240         return zoom_complete;
1241 #endif
1242     }
1243     if (c->cs)
1244     {
1245         int ret = cs_connect(c->cs, add);
1246         if (ret == 0)
1247         {
1248             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1249             ZOOM_connection_put_event(c, event);
1250             get_cert(c);
1251             if (c->proto == PROTO_Z3950)
1252                 ZOOM_connection_send_init(c);
1253             else
1254             {
1255                 /* no init request for SRW .. */
1256                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1257                 ZOOM_connection_remove_task(c);
1258                 ZOOM_connection_set_mask(c, 0);
1259                 ZOOM_connection_exec_task(c);
1260             }
1261             c->state = STATE_ESTABLISHED;
1262             return zoom_pending;
1263         }
1264         else if (ret > 0)
1265         {
1266             int mask = ZOOM_SELECT_EXCEPT;
1267             if (c->cs->io_pending & CS_WANT_WRITE)
1268                 mask += ZOOM_SELECT_WRITE;
1269             if (c->cs->io_pending & CS_WANT_READ)
1270                 mask += ZOOM_SELECT_READ;
1271             ZOOM_connection_set_mask(c, mask);
1272             c->state = STATE_CONNECTING;
1273             return zoom_pending;
1274         }
1275     }
1276     c->state = STATE_IDLE;
1277     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1278     return zoom_complete;
1279 }
1280
1281 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1282 {
1283     int i;
1284     for (i = 0; i<200; i++)
1285     {
1286         size_t len;
1287         Odr_oid *oid;
1288         Z_OtherInformation **oi;
1289         char buf[80];
1290         const char *val;
1291         const char *cp;
1292
1293         sprintf(buf, "otherInfo%d", i);
1294         val = ZOOM_options_get(c->options, buf);
1295         if (!val)
1296             break;
1297         cp = strchr(val, ':');
1298         if (!cp)
1299             continue;
1300         len = cp - val;
1301         if (len >= sizeof(buf))
1302             len = sizeof(buf)-1;
1303         memcpy(buf, val, len);
1304         buf[len] = '\0';
1305
1306         oid = yaz_string_to_oid_odr(yaz_oid_std(), CLASS_USERINFO,
1307                                     buf, out);
1308         if (!oid)
1309             continue;
1310
1311         yaz_oi_APDU(a, &oi);
1312         yaz_oi_set_string_oid(oi, out, oid, 1, cp+1);
1313     }
1314 }
1315
1316 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1317 {
1318     assert(a);
1319     if (c->cookie_out)
1320     {
1321         Z_OtherInformation **oi;
1322         yaz_oi_APDU(a, &oi);
1323         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_cookie,
1324                               1, c->cookie_out);
1325     }
1326     if (c->client_IP)
1327     {
1328         Z_OtherInformation **oi;
1329         yaz_oi_APDU(a, &oi);
1330         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_client_ip,
1331                               1, c->client_IP);
1332     }
1333     otherInfo_attach(c, a, out);
1334     if (!z_APDU(out, &a, 0, 0))
1335     {
1336         FILE *outf = fopen("/tmp/apdu.txt", "a");
1337         if (a && outf)
1338         {
1339             ODR odr_pr = odr_createmem(ODR_PRINT);
1340             fprintf(outf, "a=%p\n", a);
1341             odr_setprint(odr_pr, outf);
1342             z_APDU(odr_pr, &a, 0, 0);
1343             odr_destroy(odr_pr);
1344         }
1345         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1346         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1347         odr_reset(out);
1348         return -1;
1349     }
1350     if (c->odr_print)
1351         z_APDU(c->odr_print, &a, 0, 0);
1352     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1353     return 0;
1354 }
1355
1356 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1357 {
1358     ZOOM_Event event;
1359     assert(a);
1360     if (encode_APDU(c, a, c->odr_out))
1361         return zoom_complete;
1362     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1363     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1364     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1365     ZOOM_connection_put_event(c, event);
1366     odr_reset(c->odr_out);
1367     return do_write(c);
1368 }
1369
1370 /* returns 1 if PDU was sent OK (still pending )
1371    0 if PDU was not sent OK (nothing to wait for)
1372 */
1373
1374 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1375 {
1376     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1377     Z_InitRequest *ireq = apdu->u.initRequest;
1378     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1379         odr_malloc(c->odr_out, sizeof(*auth));
1380
1381     ODR_MASK_SET(ireq->options, Z_Options_search);
1382     ODR_MASK_SET(ireq->options, Z_Options_present);
1383     ODR_MASK_SET(ireq->options, Z_Options_scan);
1384     ODR_MASK_SET(ireq->options, Z_Options_sort);
1385     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1386     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1387
1388     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1389     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1390     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1391
1392     ireq->implementationId =
1393         odr_prepend(c->odr_out,
1394                     ZOOM_options_get(c->options, "implementationId"),
1395                     ireq->implementationId);
1396
1397     ireq->implementationName =
1398         odr_prepend(c->odr_out,
1399                     ZOOM_options_get(c->options, "implementationName"),
1400                     odr_prepend(c->odr_out, "ZOOM-C",
1401                                 ireq->implementationName));
1402
1403     ireq->implementationVersion =
1404         odr_prepend(c->odr_out,
1405                     ZOOM_options_get(c->options, "implementationVersion"),
1406                                 ireq->implementationVersion);
1407
1408     *ireq->maximumRecordSize = c->maximum_record_size;
1409     *ireq->preferredMessageSize = c->preferred_message_size;
1410
1411     if (c->group || c->password)
1412     {
1413         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1414         pass->groupId = odr_strdup_null(c->odr_out, c->group);
1415         pass->userId = odr_strdup_null(c->odr_out, c->user);
1416         pass->password = odr_strdup_null(c->odr_out, c->password);
1417         auth->which = Z_IdAuthentication_idPass;
1418         auth->u.idPass = pass;
1419         ireq->idAuthentication = auth;
1420     }
1421     else if (c->user)
1422     {
1423         auth->which = Z_IdAuthentication_open;
1424         auth->u.open = odr_strdup(c->odr_out, c->user);
1425         ireq->idAuthentication = auth;
1426     }
1427     if (c->proxy)
1428     {
1429         yaz_oi_set_string_oid(&ireq->otherInfo, c->odr_out,
1430                               yaz_oid_userinfo_proxy, 1, c->host_port);
1431     }
1432     if (c->charset || c->lang)
1433     {
1434         Z_OtherInformation **oi;
1435         Z_OtherInformationUnit *oi_unit;
1436
1437         yaz_oi_APDU(apdu, &oi);
1438
1439         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1440         {
1441             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1442             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1443             oi_unit->information.externallyDefinedInfo =
1444                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1445                                               c->charset, c->lang, 1);
1446         }
1447     }
1448     assert(apdu);
1449     return send_APDU(c, apdu);
1450 }
1451
1452 #if YAZ_HAVE_XML2
1453 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1454 {
1455     Z_GDU *gdu;
1456     ZOOM_Event event;
1457     const char *database =  ZOOM_options_get(c->options, "databaseName");
1458     char *fdatabase = 0;
1459
1460     if (database)
1461         fdatabase = yaz_encode_sru_dbpath_odr(c->odr_out, database);
1462     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port,
1463                                        fdatabase ? fdatabase : c->path);
1464
1465     if (c->sru_mode == zoom_sru_get)
1466     {
1467         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1468     }
1469     else if (c->sru_mode == zoom_sru_post)
1470     {
1471         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1472     }
1473     else if (c->sru_mode == zoom_sru_soap)
1474     {
1475         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1476     }
1477     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1478         return zoom_complete;
1479     if (c->odr_print)
1480         z_GDU(c->odr_print, &gdu, 0, 0);
1481     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1482
1483     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1484     ZOOM_connection_put_event(c, event);
1485     odr_reset(c->odr_out);
1486     return do_write(c);
1487 }
1488 #endif
1489
1490 #if YAZ_HAVE_XML2
1491 static Z_SRW_PDU *ZOOM_srw_get_pdu(ZOOM_connection c, int type)
1492 {
1493     Z_SRW_PDU *sr = yaz_srw_get_pdu(c->odr_out, type, c->sru_version);
1494     sr->username = c->user;
1495     sr->password = c->password;
1496     return sr;
1497 }
1498 #endif
1499
1500 #if YAZ_HAVE_XML2
1501 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1502 {
1503     int i;
1504     int *start, *count;
1505     ZOOM_resultset resultset = 0;
1506     Z_SRW_PDU *sr = 0;
1507     const char *option_val = 0;
1508
1509     if (c->error)                  /* don't continue on error */
1510         return zoom_complete;
1511     assert(c->tasks);
1512     switch(c->tasks->which)
1513     {
1514     case ZOOM_TASK_SEARCH:
1515         resultset = c->tasks->u.search.resultset;
1516         if (!resultset->setname)
1517             resultset->setname = xstrdup("default");
1518         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1519         start = &c->tasks->u.search.start;
1520         count = &c->tasks->u.search.count;
1521         break;
1522     case ZOOM_TASK_RETRIEVE:
1523         resultset = c->tasks->u.retrieve.resultset;
1524
1525         start = &c->tasks->u.retrieve.start;
1526         count = &c->tasks->u.retrieve.count;
1527
1528         if (*start >= resultset->size)
1529             return zoom_complete;
1530         if (*start + *count > resultset->size)
1531             *count = resultset->size - *start;
1532
1533         for (i = 0; i < *count; i++)
1534         {
1535             ZOOM_record rec =
1536                 record_cache_lookup(resultset, i + *start,
1537                                     c->tasks->u.retrieve.syntax,
1538                                     c->tasks->u.retrieve.elementSetName);
1539             if (!rec)
1540                 break;
1541             else
1542             {
1543                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1544                 ZOOM_connection_put_event(c, event);
1545             }
1546         }
1547         *start += i;
1548         *count -= i;
1549
1550         if (*count == 0)
1551             return zoom_complete;
1552         break;
1553     default:
1554         return zoom_complete;
1555     }
1556     assert(resultset->query);
1557
1558     sr = ZOOM_srw_get_pdu(c, Z_SRW_searchRetrieve_request);
1559     if (resultset->query->z_query->which == Z_Query_type_104
1560         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1561     {
1562         sr->u.request->query_type = Z_SRW_query_type_cql;
1563         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1564     }
1565     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1566              resultset->query->z_query->u.type_1)
1567     {
1568         sr->u.request->query_type = Z_SRW_query_type_pqf;
1569         sr->u.request->query.pqf = resultset->query->query_string;
1570     }
1571     else
1572     {
1573         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1574         return zoom_complete;
1575     }
1576     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1577     sr->u.request->maximumRecords = odr_intdup(
1578         c->odr_out, (resultset->step > 0 && resultset->step < *count) ?
1579         resultset->step : *count);
1580     sr->u.request->recordSchema = resultset->schema;
1581
1582     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1583     if (option_val)
1584         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1585
1586     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1587     yaz_encode_sru_extra(sr, c->odr_out, option_val);
1588     return send_srw(c, sr);
1589 }
1590 #else
1591 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1592 {
1593     return zoom_complete;
1594 }
1595 #endif
1596
1597 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1598 {
1599     ZOOM_resultset r;
1600     int lslb, ssub, mspn;
1601     const char *syntax;
1602     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1603     Z_SearchRequest *search_req = apdu->u.searchRequest;
1604     const char *elementSetName;
1605     const char *smallSetElementSetName;
1606     const char *mediumSetElementSetName;
1607
1608     assert(c->tasks);
1609     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1610
1611     r = c->tasks->u.search.resultset;
1612
1613     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1614
1615     elementSetName =
1616         ZOOM_options_get(r->options, "elementSetName");
1617     smallSetElementSetName  =
1618         ZOOM_options_get(r->options, "smallSetElementSetName");
1619     mediumSetElementSetName =
1620         ZOOM_options_get(r->options, "mediumSetElementSetName");
1621
1622     if (!smallSetElementSetName)
1623         smallSetElementSetName = elementSetName;
1624
1625     if (!mediumSetElementSetName)
1626         mediumSetElementSetName = elementSetName;
1627
1628     assert(r);
1629     assert(r->query);
1630
1631     /* prepare query for the search request */
1632     search_req->query = r->query->z_query;
1633     if (!search_req->query)
1634     {
1635         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1636         return zoom_complete;
1637     }
1638     if (r->query->z_query->which == Z_Query_type_1 ||
1639         r->query->z_query->which == Z_Query_type_101)
1640     {
1641         const char *cp = ZOOM_options_get(r->options, "rpnCharset");
1642         if (cp)
1643         {
1644             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
1645             if (cd)
1646             {
1647                 int r;
1648                 search_req->query = yaz_copy_Z_Query(search_req->query,
1649                                                      c->odr_out);
1650
1651                 r = yaz_query_charset_convert_rpnquery_check(
1652                     search_req->query->u.type_1,
1653                     c->odr_out, cd);
1654                 yaz_iconv_close(cd);
1655                 if (r)
1656                 {  /* query could not be char converted */
1657                     set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1658                     return zoom_complete;
1659                 }
1660             }
1661         }
1662     }
1663     search_req->databaseNames = r->databaseNames;
1664     search_req->num_databaseNames = r->num_databaseNames;
1665
1666     /* get syntax (no need to provide unless piggyback is in effect) */
1667     syntax = c->tasks->u.search.syntax;
1668
1669     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1670     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1671     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1672     if (lslb != -1 && ssub != -1 && mspn != -1)
1673     {
1674         /* So're a Z39.50 expert? Let's hope you don't do sort */
1675         *search_req->largeSetLowerBound = lslb;
1676         *search_req->smallSetUpperBound = ssub;
1677         *search_req->mediumSetPresentNumber = mspn;
1678     }
1679     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1680              && r->piggyback && !r->r_sort_spec && !r->schema)
1681     {
1682         /* Regular piggyback - do it unless we're going to do sort */
1683         *search_req->largeSetLowerBound = 2000000000;
1684         *search_req->smallSetUpperBound = 1;
1685         *search_req->mediumSetPresentNumber =
1686             r->step>0 ? r->step : c->tasks->u.search.count;
1687     }
1688     else
1689     {
1690         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1691         smallSetElementSetName = 0;
1692         mediumSetElementSetName = 0;
1693         syntax = 0;
1694     }
1695     if (smallSetElementSetName && *smallSetElementSetName)
1696     {
1697         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1698             odr_malloc(c->odr_out, sizeof(*esn));
1699
1700         esn->which = Z_ElementSetNames_generic;
1701         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1702         search_req->smallSetElementSetNames = esn;
1703     }
1704     if (mediumSetElementSetName && *mediumSetElementSetName)
1705     {
1706         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1707             odr_malloc(c->odr_out, sizeof(*esn));
1708
1709         esn->which = Z_ElementSetNames_generic;
1710         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1711         search_req->mediumSetElementSetNames = esn;
1712     }
1713     if (syntax)
1714         search_req->preferredRecordSyntax =
1715             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1716
1717     if (!r->setname)
1718     {
1719         if (c->support_named_resultsets)
1720         {
1721             char setname[14];
1722             int ord;
1723             /* find the lowest unused ordinal so that we re-use
1724                result sets on the server. */
1725             for (ord = 1; ; ord++)
1726             {
1727                 ZOOM_resultset rp;
1728                 sprintf(setname, "%d", ord);
1729                 for (rp = c->resultsets; rp; rp = rp->next)
1730                     if (rp->setname && !strcmp(rp->setname, setname))
1731                         break;
1732                 if (!rp)
1733                     break;
1734             }
1735             r->setname = xstrdup(setname);
1736             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1737                     "set %s", c, r->setname);
1738         }
1739         else
1740         {
1741             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1742                     "default set", c);
1743             r->setname = xstrdup("default");
1744         }
1745         ZOOM_options_set(r->options, "setname", r->setname);
1746     }
1747     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1748     return send_APDU(c, apdu);
1749 }
1750
1751 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1752 {
1753     char oid_name_buf[OID_STR_MAX];
1754     const char *oid_name;
1755     char *addinfo = 0;
1756
1757     oid_name = yaz_oid_to_string_buf(r->diagnosticSetId, 0, oid_name_buf);
1758     switch (r->which)
1759     {
1760     case Z_DefaultDiagFormat_v2Addinfo:
1761         addinfo = r->u.v2Addinfo;
1762         break;
1763     case Z_DefaultDiagFormat_v3Addinfo:
1764         addinfo = r->u.v3Addinfo;
1765         break;
1766     }
1767     xfree(c->addinfo);
1768     c->addinfo = 0;
1769     set_dset_error(c, *r->condition, oid_name, addinfo, 0);
1770 }
1771
1772 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1773 {
1774     if (p->which != Z_DiagRec_defaultFormat)
1775         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1776     else
1777         response_default_diag(c, p->u.defaultFormat);
1778 }
1779
1780 ZOOM_API(ZOOM_record)
1781     ZOOM_record_clone(ZOOM_record srec)
1782 {
1783     char *buf;
1784     int size;
1785     ODR odr_enc;
1786     ZOOM_record nrec;
1787
1788     odr_enc = odr_createmem(ODR_ENCODE);
1789     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1790         return 0;
1791     buf = odr_getbuf(odr_enc, &size, 0);
1792
1793     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1794     nrec->odr = odr_createmem(ODR_DECODE);
1795     nrec->wrbuf = 0;
1796 #if YAZ_HAVE_XML2
1797     nrec->xml_mem = 0;
1798     nrec->xml_size = 0;
1799 #endif
1800     odr_setbuf(nrec->odr, buf, size, 0);
1801     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1802
1803     nrec->schema = odr_strdup_null(nrec->odr, srec->schema);
1804     nrec->diag_uri = odr_strdup_null(nrec->odr, srec->diag_uri);
1805     nrec->diag_message = odr_strdup_null(nrec->odr, srec->diag_message);
1806     nrec->diag_details = odr_strdup_null(nrec->odr, srec->diag_details);
1807     nrec->diag_set = odr_strdup_null(nrec->odr, srec->diag_set);
1808     odr_destroy(odr_enc);
1809     return nrec;
1810 }
1811
1812 ZOOM_API(ZOOM_record)
1813     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1814 {
1815     const char *syntax =
1816         ZOOM_options_get(s->options, "preferredRecordSyntax");
1817     const char *elementSetName =
1818         ZOOM_options_get(s->options, "elementSetName");
1819
1820     return record_cache_lookup(s, pos, syntax, elementSetName);
1821 }
1822
1823 ZOOM_API(ZOOM_record)
1824     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1825 {
1826     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1827
1828     if (!rec)
1829     {
1830         /*
1831          * MIKE: I think force_sync should always be zero, but I don't
1832          * want to make this change until I get the go-ahead from
1833          * Adam, in case something depends on the old synchronous
1834          * behaviour.
1835          */
1836         int force_sync = 1;
1837         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1838         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1839         rec = ZOOM_resultset_record_immediate(r, pos);
1840     }
1841     return rec;
1842 }
1843
1844 ZOOM_API(void)
1845     ZOOM_record_destroy(ZOOM_record rec)
1846 {
1847     ZOOM_record_release(rec);
1848     xfree(rec);
1849 }
1850
1851
1852 static yaz_iconv_t iconv_create_charset(const char *record_charset)
1853 {
1854     char to[40];
1855     char from[40];
1856     yaz_iconv_t cd = 0;
1857
1858     *from = '\0';
1859     strcpy(to, "UTF-8");
1860     if (record_charset && *record_charset)
1861     {
1862         /* Use "from,to" or just "from" */
1863         const char *cp = strchr(record_charset, ',');
1864         size_t clen = strlen(record_charset);
1865         if (cp && cp[1])
1866         {
1867             strncpy( to, cp+1, sizeof(to)-1);
1868             to[sizeof(to)-1] = '\0';
1869             clen = cp - record_charset;
1870         }
1871         if (clen > sizeof(from)-1)
1872             clen = sizeof(from)-1;
1873
1874         if (clen)
1875             strncpy(from, record_charset, clen);
1876         from[clen] = '\0';
1877     }
1878     if (*from && *to)
1879         cd = yaz_iconv_open(to, from);
1880     return cd;
1881 }
1882
1883 static const char *return_marc_record(ZOOM_record rec, int marc_type,
1884                                       int *len,
1885                                       const char *buf, int sz,
1886                                       const char *record_charset)
1887 {
1888     yaz_iconv_t cd = iconv_create_charset(record_charset);
1889     yaz_marc_t mt = yaz_marc_create();
1890     const char *ret_string = 0;
1891
1892     if (cd)
1893         yaz_marc_iconv(mt, cd);
1894     yaz_marc_xml(mt, marc_type);
1895     if (!rec->wrbuf)
1896         rec->wrbuf = wrbuf_alloc();
1897     wrbuf_rewind(rec->wrbuf);
1898     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf) > 0)
1899     {
1900         if (len)
1901             *len = wrbuf_len(rec->wrbuf);
1902         ret_string = wrbuf_cstr(rec->wrbuf);
1903     }
1904     yaz_marc_destroy(mt);
1905     if (cd)
1906         yaz_iconv_close(cd);
1907     return ret_string;
1908 }
1909
1910 static const char *return_opac_record(ZOOM_record rec, int marc_type,
1911                                       int *len,
1912                                       Z_OPACRecord *opac_rec,
1913                                       const char *record_charset)
1914 {
1915     yaz_iconv_t cd = iconv_create_charset(record_charset);
1916     yaz_marc_t mt = yaz_marc_create();
1917
1918     if (cd)
1919         yaz_marc_iconv(mt, cd);
1920     yaz_marc_xml(mt, marc_type);
1921
1922     if (!rec->wrbuf)
1923         rec->wrbuf = wrbuf_alloc();
1924     wrbuf_rewind(rec->wrbuf);
1925
1926     yaz_opac_decode_wrbuf(mt, opac_rec, rec->wrbuf);
1927     yaz_marc_destroy(mt);
1928
1929     if (cd)
1930         yaz_iconv_close(cd);
1931     if (len)
1932         *len = wrbuf_len(rec->wrbuf);
1933     return wrbuf_cstr(rec->wrbuf);
1934 }
1935
1936 static const char *return_string_record(ZOOM_record rec, int *len,
1937                                         const char *buf, int sz,
1938                                         const char *record_charset)
1939 {
1940     yaz_iconv_t cd = iconv_create_charset(record_charset);
1941
1942     if (cd)
1943     {
1944         if (!rec->wrbuf)
1945             rec->wrbuf = wrbuf_alloc();
1946
1947         wrbuf_rewind(rec->wrbuf);
1948
1949         wrbuf_iconv_write(rec->wrbuf, cd, buf, sz);
1950         wrbuf_iconv_reset(rec->wrbuf, cd);
1951
1952         buf = wrbuf_cstr(rec->wrbuf);
1953         sz = wrbuf_len(rec->wrbuf);
1954         yaz_iconv_close(cd);
1955     }
1956     if (len)
1957         *len = sz;
1958     return buf;
1959 }
1960
1961 static const char *return_record(ZOOM_record rec, int *len,
1962                                  Z_NamePlusRecord *npr,
1963                                  int marctype, const char *charset)
1964 {
1965     Z_External *r = (Z_External *) npr->u.databaseRecord;
1966     const Odr_oid *oid = r->direct_reference;
1967
1968     /* render bibliographic record .. */
1969     if (r->which == Z_External_OPAC)
1970     {
1971         return return_opac_record(rec, marctype, len,
1972                                   r->u.opac, charset);
1973     }
1974     if (r->which == Z_External_sutrs)
1975         return return_string_record(rec, len,
1976                                     (char*) r->u.sutrs->buf,
1977                                     r->u.sutrs->len,
1978                                     charset);
1979     else if (r->which == Z_External_octet)
1980     {
1981         if (yaz_oid_is_iso2709(oid))
1982         {
1983             const char *ret_buf = return_marc_record(
1984                 rec, marctype, len,
1985                 (const char *) r->u.octet_aligned->buf,
1986                 r->u.octet_aligned->len,
1987                 charset);
1988             if (ret_buf)
1989                 return ret_buf;
1990             /* bad ISO2709. Return fail unless raw (ISO2709) is wanted */
1991             if (marctype != YAZ_MARC_ISO2709)
1992                 return 0;
1993         }
1994         return return_string_record(rec, len,
1995                                     (const char *) r->u.octet_aligned->buf,
1996                                     r->u.octet_aligned->len,
1997                                     charset);
1998     }
1999     else if (r->which == Z_External_grs1)
2000     {
2001         if (!rec->wrbuf)
2002             rec->wrbuf = wrbuf_alloc();
2003         wrbuf_rewind(rec->wrbuf);
2004         yaz_display_grs1(rec->wrbuf, r->u.grs1, 0);
2005         return return_string_record(rec, len,
2006                                     wrbuf_buf(rec->wrbuf),
2007                                     wrbuf_len(rec->wrbuf),
2008                                     charset);
2009     }
2010     return 0;
2011 }
2012
2013
2014 ZOOM_API(int)
2015     ZOOM_record_error(ZOOM_record rec, const char **cp,
2016                       const char **addinfo, const char **diagset)
2017 {
2018     Z_NamePlusRecord *npr;
2019
2020     if (!rec)
2021         return 0;
2022
2023     npr = rec->npr;
2024     if (rec->diag_uri)
2025     {
2026         if (cp)
2027             *cp = rec->diag_message;
2028         if (addinfo)
2029             *addinfo = rec->diag_details;
2030         if (diagset)
2031             *diagset = rec->diag_set;
2032         return uri_to_code(rec->diag_uri);
2033     }
2034     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
2035     {
2036         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
2037         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
2038         const char *add = 0;
2039
2040         if (diag_rec->which == Z_DiagRec_defaultFormat)
2041         {
2042             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
2043             oid_class oclass;
2044
2045             error = *ddf->condition;
2046             switch (ddf->which)
2047             {
2048             case Z_DefaultDiagFormat_v2Addinfo:
2049                 add = ddf->u.v2Addinfo;
2050                 break;
2051             case Z_DefaultDiagFormat_v3Addinfo:
2052                 add = ddf->u.v3Addinfo;
2053                 break;
2054             }
2055             if (diagset)
2056                 *diagset =
2057                     yaz_oid_to_string(yaz_oid_std(),
2058                                       ddf->diagnosticSetId, &oclass);
2059         }
2060         else
2061         {
2062             if (diagset)
2063                 *diagset = "Bib-1";
2064         }
2065         if (addinfo)
2066             *addinfo = add ? add : "";
2067         if (cp)
2068             *cp = diagbib1_str(error);
2069         return error;
2070     }
2071     return 0;
2072 }
2073
2074 static const char *get_record_format(ZOOM_record rec, int *len,
2075                                      Z_NamePlusRecord *npr,
2076                                      int marctype, const char *charset,
2077                                      const char *format)
2078 {
2079     const char *res = return_record(rec, len, npr, marctype, charset);
2080 #if YAZ_HAVE_XML2
2081     if (*format == '1' && len)
2082     {
2083         /* try to XML format res */
2084         xmlKeepBlanksDefault(0);
2085         xmlDocPtr doc = xmlParseMemory(res, *len);
2086         if (doc)
2087         {
2088             if (rec->xml_mem)
2089                 xmlFree(rec->xml_mem);
2090             xmlDocDumpFormatMemory(doc, &rec->xml_mem, &rec->xml_size, 1);
2091             xmlFreeDoc(doc);
2092             res = (char *) rec->xml_mem;
2093             *len = rec->xml_size;
2094         }
2095     }
2096 #endif
2097     return res;
2098 }
2099
2100
2101 ZOOM_API(const char *)
2102     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
2103 {
2104     char type[40];
2105     char charset[40];
2106     char format[3];
2107     const char *cp;
2108     size_t i;
2109     Z_NamePlusRecord *npr;
2110
2111     if (len)
2112         *len = 0; /* default return */
2113
2114     if (!rec)
2115         return 0;
2116     npr = rec->npr;
2117     if (!npr)
2118         return 0;
2119
2120     cp = type_spec;
2121     for (i = 0; cp[i] && cp[i] != ';' && cp[i] != ' ' && i < sizeof(type)-1;
2122          i++)
2123         type[i] = cp[i];
2124     type[i] = '\0';
2125     charset[0] = '\0';
2126     format[0] = '\0';
2127     while (1)
2128     {
2129         while (cp[i] == ' ')
2130             i++;
2131         if (cp[i] != ';')
2132             break;
2133         i++;
2134         while (cp[i] == ' ')
2135             i++;
2136         if (!strncmp(cp + i, "charset=", 8))
2137         {
2138             size_t j = 0;
2139             i = i + 8; /* skip charset= */
2140             for (j = 0; cp[i] && cp[i] != ';' && cp[i] != ' '; i++)
2141             {
2142                 if (j < sizeof(charset)-1)
2143                     charset[j++] = cp[i];
2144             }
2145             charset[j] = '\0';
2146         }
2147         else if (!strncmp(cp + i, "format=", 7))
2148         {
2149             size_t j = 0;
2150             i = i + 7;
2151             for (j = 0; cp[i] && cp[i] != ';' && cp[i] != ' '; i++)
2152             {
2153                 if (j < sizeof(format)-1)
2154                     format[j++] = cp[i];
2155             }
2156             format[j] = '\0';
2157         }
2158     }
2159     if (!strcmp(type, "database"))
2160     {
2161         if (len)
2162             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
2163         return npr->databaseName;
2164     }
2165     else if (!strcmp(type, "schema"))
2166     {
2167         if (len)
2168             *len = rec->schema ? strlen(rec->schema) : 0;
2169         return rec->schema;
2170     }
2171     else if (!strcmp(type, "syntax"))
2172     {
2173         const char *desc = 0;
2174         if (npr->which == Z_NamePlusRecord_databaseRecord)
2175         {
2176             Z_External *r = (Z_External *) npr->u.databaseRecord;
2177             desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
2178         }
2179         if (!desc)
2180             desc = "none";
2181         if (len)
2182             *len = strlen(desc);
2183         return desc;
2184     }
2185     if (npr->which != Z_NamePlusRecord_databaseRecord)
2186         return 0;
2187
2188     /* from now on - we have a database record .. */
2189     if (!strcmp(type, "render"))
2190     {
2191         return get_record_format(rec, len, npr, YAZ_MARC_LINE, charset, format);
2192     }
2193     else if (!strcmp(type, "xml"))
2194     {
2195         return get_record_format(rec, len, npr, YAZ_MARC_MARCXML, charset,
2196                                  format);
2197     }
2198     else if (!strcmp(type, "raw"))
2199     {
2200         return get_record_format(rec, len, npr, YAZ_MARC_ISO2709, charset,
2201             format);
2202     }
2203     else if (!strcmp(type, "ext"))
2204     {
2205         if (len) *len = -1;
2206         return (const char *) npr->u.databaseRecord;
2207     }
2208     else if (!strcmp(type, "opac"))
2209     {
2210         if (npr->u.databaseRecord->which == Z_External_OPAC)
2211             return get_record_format(rec, len, npr, YAZ_MARC_MARCXML, charset,
2212                 format);
2213     }
2214     return 0;
2215 }
2216
2217 static int strcmp_null(const char *v1, const char *v2)
2218 {
2219     if (!v1 && !v2)
2220         return 0;
2221     if (!v1 || !v2)
2222         return -1;
2223     return strcmp(v1, v2);
2224 }
2225
2226 static size_t record_hash(int pos)
2227 {
2228     if (pos < 0)
2229         pos = 0;
2230     return pos % RECORD_HASH_SIZE;
2231 }
2232
2233 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2234                              int pos,
2235                              const char *syntax, const char *elementSetName,
2236                              const char *schema,
2237                              Z_SRW_diagnostic *diag)
2238 {
2239     ZOOM_record_cache rc = 0;
2240
2241     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2242     ZOOM_connection_put_event(r->connection, event);
2243
2244     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2245     {
2246         if (pos == rc->pos
2247             && strcmp_null(r->schema, rc->schema) == 0
2248             && strcmp_null(elementSetName,rc->elementSetName) == 0
2249             && strcmp_null(syntax, rc->syntax) == 0)
2250             break;
2251     }
2252     if (!rc)
2253     {
2254         rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2255         rc->rec.odr = 0;
2256         rc->rec.wrbuf = 0;
2257 #if YAZ_HAVE_XML2
2258         rc->rec.xml_mem = 0;
2259 #endif
2260         rc->elementSetName = odr_strdup_null(r->odr, elementSetName);
2261
2262         rc->syntax = odr_strdup_null(r->odr, syntax);
2263
2264         rc->schema = odr_strdup_null(r->odr, r->schema);
2265
2266         rc->pos = pos;
2267         rc->next = r->record_hash[record_hash(pos)];
2268         r->record_hash[record_hash(pos)] = rc;
2269     }
2270     rc->rec.npr = npr;
2271     rc->rec.schema = odr_strdup_null(r->odr, schema);
2272     rc->rec.diag_set = 0;
2273     rc->rec.diag_uri = 0;
2274     rc->rec.diag_message = 0;
2275     rc->rec.diag_details = 0;
2276     if (diag)
2277     {
2278         if (diag->uri)
2279         {
2280             char *cp;
2281             rc->rec.diag_set = odr_strdup(r->odr, diag->uri);
2282             if ((cp = strrchr(rc->rec.diag_set, '/')))
2283                 *cp = '\0';
2284             rc->rec.diag_uri = odr_strdup(r->odr, diag->uri);
2285         }
2286         rc->rec.diag_message = odr_strdup_null(r->odr, diag->message);
2287         rc->rec.diag_details = odr_strdup_null(r->odr, diag->details);
2288     }
2289 }
2290
2291 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2292                                        const char *syntax,
2293                                        const char *elementSetName)
2294 {
2295     ZOOM_record_cache rc;
2296
2297     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2298     {
2299         if (pos == rc->pos)
2300         {
2301             if (strcmp_null(r->schema, rc->schema))
2302                 continue;
2303             if (strcmp_null(elementSetName,rc->elementSetName))
2304                 continue;
2305             if (strcmp_null(syntax, rc->syntax))
2306                 continue;
2307             return &rc->rec;
2308         }
2309     }
2310     return 0;
2311 }
2312
2313 static void handle_records(ZOOM_connection c, Z_Records *sr,
2314                            int present_phase)
2315 {
2316     ZOOM_resultset resultset;
2317     int *start, *count;
2318     const char *syntax = 0, *elementSetName = 0;
2319
2320     if (!c->tasks)
2321         return ;
2322     switch (c->tasks->which)
2323     {
2324     case ZOOM_TASK_SEARCH:
2325         resultset = c->tasks->u.search.resultset;
2326         start = &c->tasks->u.search.start;
2327         count = &c->tasks->u.search.count;
2328         syntax = c->tasks->u.search.syntax;
2329         elementSetName = c->tasks->u.search.elementSetName;
2330         break;
2331     case ZOOM_TASK_RETRIEVE:
2332         resultset = c->tasks->u.retrieve.resultset;
2333         start = &c->tasks->u.retrieve.start;
2334         count = &c->tasks->u.retrieve.count;
2335         syntax = c->tasks->u.retrieve.syntax;
2336         elementSetName = c->tasks->u.retrieve.elementSetName;
2337         break;
2338     default:
2339         return;
2340     }
2341     if (sr && sr->which == Z_Records_NSD)
2342         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2343     else if (sr && sr->which == Z_Records_multipleNSD)
2344     {
2345         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2346             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2347         else
2348             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2349     }
2350     else
2351     {
2352         if (*count + *start > resultset->size)
2353             *count = resultset->size - *start;
2354         if (*count < 0)
2355             *count = 0;
2356         if (sr && sr->which == Z_Records_DBOSD)
2357         {
2358             int i;
2359             NMEM nmem = odr_extract_mem(c->odr_in);
2360             Z_NamePlusRecordList *p =
2361                 sr->u.databaseOrSurDiagnostics;
2362             for (i = 0; i<p->num_records; i++)
2363             {
2364                 record_cache_add(resultset, p->records[i], i + *start,
2365                                  syntax, elementSetName,
2366                                  elementSetName, 0);
2367             }
2368             *count -= i;
2369             if (*count < 0)
2370                 *count = 0;
2371             *start += i;
2372             yaz_log(log_details,
2373                     "handle_records resultset=%p start=%d count=%d",
2374                     resultset, *start, *count);
2375
2376             /* transfer our response to search_nmem .. we need it later */
2377             nmem_transfer(odr_getmem(resultset->odr), nmem);
2378             nmem_destroy(nmem);
2379             if (present_phase && p->num_records == 0)
2380             {
2381                 /* present response and we didn't get any records! */
2382                 Z_NamePlusRecord *myrec =
2383                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2384                 record_cache_add(resultset, myrec, *start,
2385                                  syntax, elementSetName, 0, 0);
2386             }
2387         }
2388         else if (present_phase)
2389         {
2390             /* present response and we didn't get any records! */
2391             Z_NamePlusRecord *myrec =
2392                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2393             record_cache_add(resultset, myrec, *start, syntax, elementSetName,
2394                              0, 0);
2395         }
2396     }
2397 }
2398
2399 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2400 {
2401     handle_records(c, pr->records, 1);
2402 }
2403
2404 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2405                                        Z_Term *term)
2406 {
2407     switch (term->which)
2408     {
2409     case Z_Term_general:
2410         ZOOM_options_setl(opt, name,
2411                           (const char *)(term->u.general->buf),
2412                           term->u.general->len);
2413         break;
2414     case Z_Term_characterString:
2415         ZOOM_options_set(opt, name, term->u.characterString);
2416         break;
2417     case Z_Term_numeric:
2418         ZOOM_options_set_int(opt, name, *term->u.numeric);
2419         break;
2420     }
2421 }
2422
2423 static void handle_queryExpression(ZOOM_options opt, const char *name,
2424                                    Z_QueryExpression *exp)
2425 {
2426     char opt_name[80];
2427
2428     switch (exp->which)
2429     {
2430     case Z_QueryExpression_term:
2431         if (exp->u.term && exp->u.term->queryTerm)
2432         {
2433             sprintf(opt_name, "%s.term", name);
2434             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2435         }
2436         break;
2437     case Z_QueryExpression_query:
2438         break;
2439     }
2440 }
2441
2442 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2443                                 Z_OtherInformation *o)
2444 {
2445     int i;
2446     for (i = 0; o && i < o->num_elements; i++)
2447     {
2448         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2449         {
2450             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2451
2452             if (ext->which == Z_External_searchResult1)
2453             {
2454                 int j;
2455                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2456
2457                 if (sr->num)
2458                     ZOOM_options_set_int(
2459                         resultset->options, "searchresult.size", sr->num);
2460
2461                 for (j = 0; j < sr->num; j++)
2462                 {
2463                     Z_SearchInfoReport_s *ent =
2464                         ext->u.searchResult1->elements[j];
2465                     char pref[80];
2466
2467                     sprintf(pref, "searchresult.%d", j);
2468
2469                     if (ent->subqueryId)
2470                     {
2471                         char opt_name[80];
2472                         sprintf(opt_name, "%s.id", pref);
2473                         ZOOM_options_set(resultset->options, opt_name,
2474                                          ent->subqueryId);
2475                     }
2476                     if (ent->subqueryExpression)
2477                     {
2478                         char opt_name[80];
2479                         sprintf(opt_name, "%s.subquery", pref);
2480                         handle_queryExpression(resultset->options, opt_name,
2481                                                ent->subqueryExpression);
2482                     }
2483                     if (ent->subqueryInterpretation)
2484                     {
2485                         char opt_name[80];
2486                         sprintf(opt_name, "%s.interpretation", pref);
2487                         handle_queryExpression(resultset->options, opt_name,
2488                                                ent->subqueryInterpretation);
2489                     }
2490                     if (ent->subqueryRecommendation)
2491                     {
2492                         char opt_name[80];
2493                         sprintf(opt_name, "%s.recommendation", pref);
2494                         handle_queryExpression(resultset->options, opt_name,
2495                                                ent->subqueryRecommendation);
2496                     }
2497                     if (ent->subqueryCount)
2498                     {
2499                         char opt_name[80];
2500                         sprintf(opt_name, "%s.count", pref);
2501                         ZOOM_options_set_int(resultset->options, opt_name,
2502                                              *ent->subqueryCount);
2503                     }
2504                 }
2505             }
2506         }
2507     }
2508 }
2509
2510 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2511 {
2512     ZOOM_resultset resultset;
2513     ZOOM_Event event;
2514
2515     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2516         return ;
2517
2518     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2519     ZOOM_connection_put_event(c, event);
2520
2521     resultset = c->tasks->u.search.resultset;
2522
2523     if (sr->resultSetStatus)
2524     {
2525         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2526                              *sr->resultSetStatus);
2527     }
2528     if (sr->presentStatus)
2529     {
2530         ZOOM_options_set_int(resultset->options, "presentStatus",
2531                              *sr->presentStatus);
2532     }
2533     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2534
2535     resultset->size = *sr->resultCount;
2536     handle_records(c, sr->records, 0);
2537 }
2538
2539 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2540 {
2541     if (res->diagnostics && res->num_diagnostics > 0)
2542         response_diag(c, res->diagnostics[0]);
2543 }
2544
2545 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2546 {
2547     NMEM nmem = odr_extract_mem(c->odr_in);
2548     ZOOM_scanset scan;
2549
2550     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2551         return 0;
2552     scan = c->tasks->u.scan.scan;
2553
2554     if (res->entries && res->entries->nonsurrogateDiagnostics)
2555         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2556     scan->scan_response = res;
2557     scan->srw_scan_response = 0;
2558     nmem_transfer(odr_getmem(scan->odr), nmem);
2559     if (res->stepSize)
2560         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2561     if (res->positionOfTerm)
2562         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2563     if (res->scanStatus)
2564         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2565     if (res->numberOfEntriesReturned)
2566         ZOOM_options_set_int(scan->options, "number",
2567                              *res->numberOfEntriesReturned);
2568     nmem_destroy(nmem);
2569     return 1;
2570 }
2571
2572 static zoom_ret send_sort(ZOOM_connection c,
2573                           ZOOM_resultset resultset)
2574 {
2575     if (c->error)
2576         resultset->r_sort_spec = 0;
2577     if (resultset->r_sort_spec)
2578     {
2579         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2580         Z_SortRequest *req = apdu->u.sortRequest;
2581
2582         req->num_inputResultSetNames = 1;
2583         req->inputResultSetNames = (Z_InternationalString **)
2584             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2585         req->inputResultSetNames[0] =
2586             odr_strdup(c->odr_out, resultset->setname);
2587         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2588         req->sortSequence = resultset->r_sort_spec;
2589         resultset->r_sort_spec = 0;
2590         return send_APDU(c, apdu);
2591     }
2592     return zoom_complete;
2593 }
2594
2595 static zoom_ret send_present(ZOOM_connection c)
2596 {
2597     Z_APDU *apdu = 0;
2598     Z_PresentRequest *req = 0;
2599     int i = 0;
2600     const char *syntax = 0;
2601     const char *elementSetName = 0;
2602     ZOOM_resultset  resultset;
2603     int *start, *count;
2604
2605     if (!c->tasks)
2606     {
2607         yaz_log(log_details, "%p send_present no tasks", c);
2608         return zoom_complete;
2609     }
2610
2611     switch (c->tasks->which)
2612     {
2613     case ZOOM_TASK_SEARCH:
2614         resultset = c->tasks->u.search.resultset;
2615         start = &c->tasks->u.search.start;
2616         count = &c->tasks->u.search.count;
2617         syntax = c->tasks->u.search.syntax;
2618         elementSetName = c->tasks->u.search.elementSetName;
2619         break;
2620     case ZOOM_TASK_RETRIEVE:
2621         resultset = c->tasks->u.retrieve.resultset;
2622         start = &c->tasks->u.retrieve.start;
2623         count = &c->tasks->u.retrieve.count;
2624         syntax = c->tasks->u.retrieve.syntax;
2625         elementSetName = c->tasks->u.retrieve.elementSetName;
2626         break;
2627     default:
2628         return zoom_complete;
2629     }
2630     yaz_log(log_details, "%p send_present start=%d count=%d",
2631             c, *start, *count);
2632
2633     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2634     {
2635         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2636                        "", 0);
2637     }
2638     if (c->error)                  /* don't continue on error */
2639         return zoom_complete;
2640     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2641             resultset, *start, *count);
2642
2643     for (i = 0; i < *count; i++)
2644     {
2645         ZOOM_record rec =
2646             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2647         if (!rec)
2648             break;
2649         else
2650         {
2651             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2652             ZOOM_connection_put_event(c, event);
2653         }
2654     }
2655     *start += i;
2656     *count -= i;
2657
2658     if (*count == 0)
2659     {
2660         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2661         return zoom_complete;
2662     }
2663
2664     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2665     req = apdu->u.presentRequest;
2666
2667     if (i)
2668         yaz_log(log_details, "%p send_present skip=%d", c, i);
2669
2670     *req->resultSetStartPoint = *start + 1;
2671
2672     if (resultset->step > 0 && resultset->step < *count)
2673         *req->numberOfRecordsRequested = resultset->step;
2674     else
2675         *req->numberOfRecordsRequested = *count;
2676
2677     if (*req->numberOfRecordsRequested + *start > resultset->size)
2678         *req->numberOfRecordsRequested = resultset->size - *start;
2679     assert(*req->numberOfRecordsRequested > 0);
2680
2681     if (syntax && *syntax)
2682         req->preferredRecordSyntax =
2683             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2684
2685     if (resultset->schema && *resultset->schema)
2686     {
2687         Z_RecordComposition *compo = (Z_RecordComposition *)
2688             odr_malloc(c->odr_out, sizeof(*compo));
2689
2690         req->recordComposition = compo;
2691         compo->which = Z_RecordComp_complex;
2692         compo->u.complex = (Z_CompSpec *)
2693             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2694         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2695             odr_malloc(c->odr_out, sizeof(bool_t));
2696         *compo->u.complex->selectAlternativeSyntax = 0;
2697
2698         compo->u.complex->generic = (Z_Specification *)
2699             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2700
2701         compo->u.complex->generic->which = Z_Schema_oid;
2702         compo->u.complex->generic->schema.oid = (Odr_oid *)
2703             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2704
2705         if (!compo->u.complex->generic->schema.oid)
2706         {
2707             /* OID wasn't a schema! Try record syntax instead. */
2708
2709             compo->u.complex->generic->schema.oid = (Odr_oid *)
2710                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2711         }
2712         if (elementSetName && *elementSetName)
2713         {
2714             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2715                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2716             compo->u.complex->generic->elementSpec->which =
2717                 Z_ElementSpec_elementSetName;
2718             compo->u.complex->generic->elementSpec->u.elementSetName =
2719                 odr_strdup(c->odr_out, elementSetName);
2720         }
2721         else
2722             compo->u.complex->generic->elementSpec = 0;
2723         compo->u.complex->num_dbSpecific = 0;
2724         compo->u.complex->dbSpecific = 0;
2725         compo->u.complex->num_recordSyntax = 0;
2726         compo->u.complex->recordSyntax = 0;
2727     }
2728     else if (elementSetName && *elementSetName)
2729     {
2730         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2731             odr_malloc(c->odr_out, sizeof(*esn));
2732         Z_RecordComposition *compo = (Z_RecordComposition *)
2733             odr_malloc(c->odr_out, sizeof(*compo));
2734
2735         esn->which = Z_ElementSetNames_generic;
2736         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2737         compo->which = Z_RecordComp_simple;
2738         compo->u.simple = esn;
2739         req->recordComposition = compo;
2740     }
2741     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2742     return send_APDU(c, apdu);
2743 }
2744
2745 ZOOM_API(ZOOM_scanset)
2746     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2747 {
2748     ZOOM_scanset s;
2749     ZOOM_query q = ZOOM_query_create();
2750
2751     ZOOM_query_prefix(q, start);
2752
2753     s = ZOOM_connection_scan1(c, q);
2754     ZOOM_query_destroy(q);
2755     return s;
2756
2757 }
2758
2759 ZOOM_API(ZOOM_scanset)
2760     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2761 {
2762     ZOOM_scanset scan = 0;
2763
2764     if (!q->z_query)
2765         return 0;
2766     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2767     scan->connection = c;
2768     scan->odr = odr_createmem(ODR_DECODE);
2769     scan->options = ZOOM_options_create_with_parent(c->options);
2770     scan->refcount = 1;
2771     scan->scan_response = 0;
2772     scan->srw_scan_response = 0;
2773
2774     scan->query = q;
2775     (q->refcount)++;
2776     scan->databaseNames = set_DatabaseNames(c, c->options,
2777                                             &scan->num_databaseNames,
2778                                             scan->odr);
2779
2780     if (1)
2781     {
2782         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2783         task->u.scan.scan = scan;
2784
2785         (scan->refcount)++;
2786         if (!c->async)
2787         {
2788             while (ZOOM_event(1, &c))
2789                 ;
2790         }
2791     }
2792     return scan;
2793 }
2794
2795 ZOOM_API(void)
2796     ZOOM_scanset_destroy(ZOOM_scanset scan)
2797 {
2798     if (!scan)
2799         return;
2800     (scan->refcount)--;
2801     if (scan->refcount == 0)
2802     {
2803         ZOOM_query_destroy(scan->query);
2804
2805         odr_destroy(scan->odr);
2806
2807         ZOOM_options_destroy(scan->options);
2808         xfree(scan);
2809     }
2810 }
2811
2812 static zoom_ret send_package(ZOOM_connection c)
2813 {
2814     ZOOM_Event event;
2815
2816     yaz_log(log_details, "%p send_package", c);
2817     if (!c->tasks)
2818         return zoom_complete;
2819     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2820
2821     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2822     ZOOM_connection_put_event(c, event);
2823
2824     c->buf_out = c->tasks->u.package->buf_out;
2825     c->len_out = c->tasks->u.package->len_out;
2826
2827     return do_write(c);
2828 }
2829
2830 static zoom_ret ZOOM_connection_send_scan(ZOOM_connection c)
2831 {
2832     ZOOM_scanset scan;
2833     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2834     Z_ScanRequest *req = apdu->u.scanRequest;
2835
2836     yaz_log(log_details, "%p send_scan", c);
2837     if (!c->tasks)
2838         return zoom_complete;
2839     assert (c->tasks->which == ZOOM_TASK_SCAN);
2840     scan = c->tasks->u.scan.scan;
2841
2842     /* Z39.50 scan can only carry RPN */
2843     if (scan->query->z_query->which == Z_Query_type_1 ||
2844         scan->query->z_query->which == Z_Query_type_101)
2845     {
2846         Z_RPNQuery *rpn = scan->query->z_query->u.type_1;
2847         const char *cp = ZOOM_options_get(scan->options, "rpnCharset");
2848         if (cp)
2849         {
2850             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
2851             if (cd)
2852             {
2853                 rpn = yaz_copy_z_RPNQuery(rpn, c->odr_out);
2854
2855                 yaz_query_charset_convert_rpnquery(
2856                     rpn, c->odr_out, cd);
2857                 yaz_iconv_close(cd);
2858             }
2859         }
2860         req->attributeSet = rpn->attributeSetId;
2861         if (!req->attributeSet)
2862             req->attributeSet = odr_oiddup(c->odr_out, yaz_oid_attset_bib_1);
2863         if (rpn->RPNStructure->which == Z_RPNStructure_simple &&
2864             rpn->RPNStructure->u.simple->which == Z_Operand_APT)
2865         {
2866             req->termListAndStartPoint =
2867                 rpn->RPNStructure->u.simple->u.attributesPlusTerm;
2868         }
2869         else
2870         {
2871             set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
2872             return zoom_complete;
2873         }
2874     }
2875     else
2876     {
2877         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2878         return zoom_complete;
2879     }
2880
2881     *req->numberOfTermsRequested =
2882         ZOOM_options_get_int(scan->options, "number", 10);
2883
2884     req->preferredPositionInResponse =
2885         odr_intdup(c->odr_out,
2886                    ZOOM_options_get_int(scan->options, "position", 1));
2887
2888     req->stepSize =
2889         odr_intdup(c->odr_out,
2890                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2891
2892     req->databaseNames = scan->databaseNames;
2893     req->num_databaseNames = scan->num_databaseNames;
2894
2895     return send_APDU(c, apdu);
2896 }
2897
2898 #if YAZ_HAVE_XML2
2899 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2900 {
2901     ZOOM_scanset scan;
2902     Z_SRW_PDU *sr = 0;
2903     const char *option_val = 0;
2904
2905     if (!c->tasks)
2906         return zoom_complete;
2907     assert (c->tasks->which == ZOOM_TASK_SCAN);
2908     scan = c->tasks->u.scan.scan;
2909
2910     sr = ZOOM_srw_get_pdu(c, Z_SRW_scan_request);
2911
2912     /* SRU scan can only carry CQL and PQF */
2913     if (scan->query->z_query->which == Z_Query_type_104)
2914     {
2915         sr->u.scan_request->query_type = Z_SRW_query_type_cql;
2916         sr->u.scan_request->scanClause.cql = scan->query->query_string;
2917     }
2918     else if (scan->query->z_query->which == Z_Query_type_1
2919              || scan->query->z_query->which == Z_Query_type_101)
2920     {
2921         sr->u.scan_request->query_type = Z_SRW_query_type_pqf;
2922         sr->u.scan_request->scanClause.pqf = scan->query->query_string;
2923     }
2924     else
2925     {
2926         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2927         return zoom_complete;
2928     }
2929
2930     sr->u.scan_request->maximumTerms = odr_intdup(
2931         c->odr_out, ZOOM_options_get_int(scan->options, "number", 10));
2932
2933     sr->u.scan_request->responsePosition = odr_intdup(
2934         c->odr_out, ZOOM_options_get_int(scan->options, "position", 1));
2935
2936     option_val = ZOOM_options_get(scan->options, "extraArgs");
2937     yaz_encode_sru_extra(sr, c->odr_out, option_val);
2938     return send_srw(c, sr);
2939 }
2940 #else
2941 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2942 {
2943     return zoom_complete;
2944 }
2945 #endif
2946
2947
2948 ZOOM_API(size_t)
2949     ZOOM_scanset_size(ZOOM_scanset scan)
2950 {
2951     if (!scan)
2952         return 0;
2953
2954     if (scan->scan_response && scan->scan_response->entries)
2955         return scan->scan_response->entries->num_entries;
2956     else if (scan->srw_scan_response)
2957         return scan->srw_scan_response->num_terms;
2958     return 0;
2959 }
2960
2961 static void ZOOM_scanset_term_x(ZOOM_scanset scan, size_t pos,
2962                                 size_t *occ,
2963                                 const char **value_term, size_t *value_len,
2964                                 const char **disp_term, size_t *disp_len)
2965 {
2966     size_t noent = ZOOM_scanset_size(scan);
2967
2968     *value_term = 0;
2969     *value_len = 0;
2970
2971     *disp_term = 0;
2972     *disp_len = 0;
2973
2974     *occ = 0;
2975     if (pos >= noent)
2976         return;
2977     if (scan->scan_response)
2978     {
2979         Z_ScanResponse *res = scan->scan_response;
2980         if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2981         {
2982             Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2983
2984             *value_term = (const char *) t->term->u.general->buf;
2985             *value_len = t->term->u.general->len;
2986             if (t->displayTerm)
2987             {
2988                 *disp_term = t->displayTerm;
2989                 *disp_len = strlen(*disp_term);
2990             }
2991             else if (t->term->which == Z_Term_general)
2992             {
2993                 *disp_term = (const char *) t->term->u.general->buf;
2994                 *disp_len = t->term->u.general->len;
2995             }
2996             *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2997         }
2998     }
2999     if (scan->srw_scan_response)
3000     {
3001         Z_SRW_scanResponse *res = scan->srw_scan_response;
3002         Z_SRW_scanTerm *t = res->terms + pos;
3003         if (t)
3004         {
3005             *value_term = t->value;
3006             *value_len = strlen(*value_term);
3007
3008             if (t->displayTerm)
3009                 *disp_term = t->displayTerm;
3010             else
3011                 *disp_term = t->value;
3012             *disp_len = strlen(*disp_term);
3013             *occ = t->numberOfRecords ? *t->numberOfRecords : 0;
3014         }
3015     }
3016 }
3017
3018 ZOOM_API(const char *)
3019     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
3020                       size_t *occ, size_t *len)
3021 {
3022     const char *value_term = 0;
3023     size_t value_len = 0;
3024     const char *disp_term = 0;
3025     size_t disp_len = 0;
3026
3027     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
3028                         &disp_term, &disp_len);
3029
3030     *len = value_len;
3031     return value_term;
3032 }
3033
3034 ZOOM_API(const char *)
3035     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
3036                               size_t *occ, size_t *len)
3037 {
3038     const char *value_term = 0;
3039     size_t value_len = 0;
3040     const char *disp_term = 0;
3041     size_t disp_len = 0;
3042
3043     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
3044                         &disp_term, &disp_len);
3045
3046     *len = disp_len;
3047     return disp_term;
3048 }
3049
3050 ZOOM_API(const char *)
3051     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
3052 {
3053     return ZOOM_options_get(scan->options, key);
3054 }
3055
3056 ZOOM_API(void)
3057     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
3058                             const char *val)
3059 {
3060     ZOOM_options_set(scan->options, key, val);
3061 }
3062
3063 static Z_APDU *create_es_package(ZOOM_package p, const Odr_oid *oid)
3064 {
3065     const char *str;
3066     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
3067     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3068
3069     str = ZOOM_options_get(p->options, "package-name");
3070     if (str && *str)
3071         req->packageName = odr_strdup(p->odr_out, str);
3072
3073     str = ZOOM_options_get(p->options, "user-id");
3074     if (str)
3075         req->userId = odr_strdup_null(p->odr_out, str);
3076
3077     req->packageType = odr_oiddup(p->odr_out, oid);
3078
3079     str = ZOOM_options_get(p->options, "function");
3080     if (str)
3081     {
3082         if (!strcmp (str, "create"))
3083             *req->function = Z_ExtendedServicesRequest_create;
3084         if (!strcmp (str, "delete"))
3085             *req->function = Z_ExtendedServicesRequest_delete;
3086         if (!strcmp (str, "modify"))
3087             *req->function = Z_ExtendedServicesRequest_modify;
3088     }
3089
3090     str = ZOOM_options_get(p->options, "waitAction");
3091     if (str)
3092     {
3093         if (!strcmp (str, "wait"))
3094             *req->waitAction = Z_ExtendedServicesRequest_wait;
3095         if (!strcmp (str, "waitIfPossible"))
3096             *req->waitAction = Z_ExtendedServicesRequest_waitIfPossible;
3097         if (!strcmp (str, "dontWait"))
3098             *req->waitAction = Z_ExtendedServicesRequest_dontWait;
3099         if (!strcmp (str, "dontReturnPackage"))
3100             *req->waitAction = Z_ExtendedServicesRequest_dontReturnPackage;
3101     }
3102     return apdu;
3103 }
3104
3105 static const char *ill_array_lookup(void *clientData, const char *idx)
3106 {
3107     ZOOM_package p = (ZOOM_package) clientData;
3108     return ZOOM_options_get(p->options, idx+4);
3109 }
3110
3111 static Z_External *encode_ill_request(ZOOM_package p)
3112 {
3113     ODR out = p->odr_out;
3114     ILL_Request *req;
3115     Z_External *r = 0;
3116     struct ill_get_ctl ctl;
3117
3118     ctl.odr = p->odr_out;
3119     ctl.clientData = p;
3120     ctl.f = ill_array_lookup;
3121
3122     req = ill_get_ILLRequest(&ctl, "ill", 0);
3123
3124     if (!ill_Request(out, &req, 0, 0))
3125     {
3126         int ill_request_size;
3127         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
3128         if (ill_request_buf)
3129             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
3130         return 0;
3131     }
3132     else
3133     {
3134         int illRequest_size = 0;
3135         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
3136
3137         r = (Z_External *) odr_malloc(out, sizeof(*r));
3138         r->direct_reference = odr_oiddup(out, yaz_oid_general_isoill_1);
3139         r->indirect_reference = 0;
3140         r->descriptor = 0;
3141         r->which = Z_External_single;
3142
3143         r->u.single_ASN1_type =
3144             odr_create_Odr_oct(out,
3145                                (unsigned char *)illRequest_buf,
3146                                illRequest_size);
3147     }
3148     return r;
3149 }
3150
3151 static Z_ItemOrder *encode_item_order(ZOOM_package p)
3152 {
3153     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
3154     const char *str;
3155     int len;
3156
3157     req->which = Z_IOItemOrder_esRequest;
3158     req->u.esRequest = (Z_IORequest *)
3159         odr_malloc(p->odr_out,sizeof(Z_IORequest));
3160
3161     /* to keep part ... */
3162     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
3163         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
3164     req->u.esRequest->toKeep->supplDescription = 0;
3165     req->u.esRequest->toKeep->contact = (Z_IOContact *)
3166         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
3167
3168     str = ZOOM_options_get(p->options, "contact-name");
3169     req->u.esRequest->toKeep->contact->name =
3170         odr_strdup_null(p->odr_out, str);
3171
3172     str = ZOOM_options_get(p->options, "contact-phone");
3173     req->u.esRequest->toKeep->contact->phone =
3174         odr_strdup_null(p->odr_out, str);
3175
3176     str = ZOOM_options_get(p->options, "contact-email");
3177     req->u.esRequest->toKeep->contact->email =
3178         odr_strdup_null(p->odr_out, str);
3179
3180     req->u.esRequest->toKeep->addlBilling = 0;
3181
3182     /* not to keep part ... */
3183     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
3184         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
3185
3186     str = ZOOM_options_get(p->options, "itemorder-setname");
3187     if (!str)
3188         str = "default";
3189
3190     if (!*str)
3191         req->u.esRequest->notToKeep->resultSetItem = 0;
3192     else
3193     {
3194         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
3195             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
3196
3197         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
3198             odr_strdup(p->odr_out, str);
3199         req->u.esRequest->notToKeep->resultSetItem->item =
3200             odr_intdup(p->odr_out, 0);
3201
3202         str = ZOOM_options_get(p->options, "itemorder-item");
3203         *req->u.esRequest->notToKeep->resultSetItem->item =
3204             (str ? atoi(str) : 1);
3205     }
3206
3207     str = ZOOM_options_getl(p->options, "doc", &len);
3208     if (str)
3209     {
3210         req->u.esRequest->notToKeep->itemRequest =
3211             z_ext_record_xml(p->odr_out, str, len);
3212     }
3213     else
3214         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3215
3216     return req;
3217 }
3218
3219 Z_APDU *create_admin_package(ZOOM_package p, int type,
3220                              Z_ESAdminOriginPartToKeep **toKeepP,
3221                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3222 {
3223     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_admin);
3224     if (apdu)
3225     {
3226         Z_ESAdminOriginPartToKeep  *toKeep;
3227         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3228         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3229         const char *first_db = "Default";
3230         int num_db;
3231         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3232                                       p->odr_out);
3233         if (num_db > 0)
3234             first_db = db[0];
3235
3236         r->direct_reference = odr_oiddup(p->odr_out, yaz_oid_extserv_admin);
3237         r->descriptor = 0;
3238         r->indirect_reference = 0;
3239         r->which = Z_External_ESAdmin;
3240
3241         r->u.adminService = (Z_Admin *)
3242             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3243         r->u.adminService->which = Z_Admin_esRequest;
3244         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3245             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3246
3247         toKeep = r->u.adminService->u.esRequest->toKeep =
3248             (Z_ESAdminOriginPartToKeep *)
3249             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3250         toKeep->which = type;
3251         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3252         toKeep->u.create = odr_nullval();
3253         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3254
3255         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3256             (Z_ESAdminOriginPartNotToKeep *)
3257             odr_malloc(p->odr_out,
3258                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3259         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3260         notToKeep->u.recordsWillFollow = odr_nullval();
3261         if (toKeepP)
3262             *toKeepP = toKeep;
3263         if (notToKeepP)
3264             *notToKeepP = notToKeep;
3265     }
3266     return apdu;
3267 }
3268
3269 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3270 {
3271     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_xml_es);
3272     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3273     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3274     int len;
3275     const char *doc = ZOOM_options_getl(p->options, "doc", &len);
3276
3277     if (!doc)
3278     {
3279         doc = "";
3280         len = 0;
3281     }
3282
3283     req->taskSpecificParameters = ext;
3284     ext->direct_reference = req->packageType;
3285     ext->descriptor = 0;
3286     ext->indirect_reference = 0;
3287
3288     ext->which = Z_External_octet;
3289     ext->u.single_ASN1_type =
3290         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc, len);
3291     return apdu;
3292 }
3293
3294 static Z_APDU *create_update_package(ZOOM_package p)
3295 {
3296     Z_APDU *apdu = 0;
3297     const char *first_db = "Default";
3298     int num_db;
3299     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3300     const char *action = ZOOM_options_get(p->options, "action");
3301     int recordIdOpaque_len;
3302     const char *recordIdOpaque = ZOOM_options_getl(p->options, "recordIdOpaque",
3303         &recordIdOpaque_len);
3304     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3305     int record_len;
3306     const char *record_buf = ZOOM_options_getl(p->options, "record",
3307         &record_len);
3308     int recordOpaque_len;
3309     const char *recordOpaque_buf = ZOOM_options_getl(p->options, "recordOpaque",
3310         &recordOpaque_len);
3311     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3312     const char *version = ZOOM_options_get(p->options, "updateVersion");
3313
3314     const char *correlationInfo_note =
3315         ZOOM_options_get(p->options, "correlationInfo.note");
3316     const char *correlationInfo_id =
3317         ZOOM_options_get(p->options, "correlationInfo.id");
3318     int action_no = -1;
3319     Odr_oid *syntax_oid = 0;
3320     const Odr_oid *package_oid = yaz_oid_extserv_database_update;
3321
3322     if (!version)
3323         version = "3";
3324     if (!syntax_str)
3325         syntax_str = "xml";
3326     if (!record_buf && !recordOpaque_buf)
3327     {
3328         record_buf = "void";
3329         record_len = 4;
3330         syntax_str = "SUTRS";
3331     }
3332
3333     if (syntax_str)
3334     {
3335         syntax_oid = yaz_string_to_oid_odr(yaz_oid_std(),
3336                                            CLASS_RECSYN, syntax_str,
3337                                            p->odr_out);
3338     }
3339     if (!syntax_oid)
3340         return 0;
3341
3342     if (num_db > 0)
3343         first_db = db[0];
3344
3345     switch(*version)
3346     {
3347     case '1':
3348         package_oid = yaz_oid_extserv_database_update_first_version;
3349         /* old update does not support specialUpdate */
3350         if (!action)
3351             action = "recordInsert";
3352         break;
3353     case '2':
3354         if (!action)
3355             action = "specialUpdate";
3356         package_oid = yaz_oid_extserv_database_update_second_version;
3357         break;
3358     case '3':
3359         if (!action)
3360             action = "specialUpdate";
3361         package_oid = yaz_oid_extserv_database_update;
3362         break;
3363     default:
3364         return 0;
3365     }
3366
3367     if (!strcmp(action, "recordInsert"))
3368         action_no = Z_IUOriginPartToKeep_recordInsert;
3369     else if (!strcmp(action, "recordReplace"))
3370         action_no = Z_IUOriginPartToKeep_recordReplace;
3371     else if (!strcmp(action, "recordDelete"))
3372         action_no = Z_IUOriginPartToKeep_recordDelete;
3373     else if (!strcmp(action, "elementUpdate"))
3374         action_no = Z_IUOriginPartToKeep_elementUpdate;
3375     else if (!strcmp(action, "specialUpdate"))
3376         action_no = Z_IUOriginPartToKeep_specialUpdate;
3377     else
3378         return 0;
3379
3380     apdu = create_es_package(p, package_oid);
3381     if (apdu)
3382     {
3383         Z_IUOriginPartToKeep *toKeep;
3384         Z_IUSuppliedRecords *notToKeep;
3385         Z_External *r = (Z_External *)
3386             odr_malloc(p->odr_out, sizeof(*r));
3387         const char *elementSetName =
3388             ZOOM_options_get(p->options, "elementSetName");
3389
3390         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3391
3392         r->direct_reference = odr_oiddup(p->odr_out, package_oid);
3393         r->descriptor = 0;
3394         r->which = Z_External_update;
3395         r->indirect_reference = 0;
3396         r->u.update = (Z_IUUpdate *)
3397             odr_malloc(p->odr_out, sizeof(*r->u.update));
3398
3399         r->u.update->which = Z_IUUpdate_esRequest;
3400         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3401             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3402         toKeep = r->u.update->u.esRequest->toKeep =
3403             (Z_IUOriginPartToKeep *)
3404             odr_malloc(p->odr_out, sizeof(*toKeep));
3405
3406         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3407         toKeep->schema = 0;
3408
3409         toKeep->elementSetName = odr_strdup_null(p->odr_out, elementSetName);
3410
3411         toKeep->actionQualifier = 0;
3412         toKeep->action = odr_intdup(p->odr_out, action_no);
3413
3414         notToKeep = r->u.update->u.esRequest->notToKeep =
3415             (Z_IUSuppliedRecords *)
3416             odr_malloc(p->odr_out, sizeof(*notToKeep));
3417         notToKeep->num = 1;
3418         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3419             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3420         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3421             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3422         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3423         if (recordIdOpaque)
3424         {
3425             notToKeep->elements[0]->u.opaque =
3426                 odr_create_Odr_oct(p->odr_out,
3427                                    (const unsigned char *) recordIdOpaque,
3428                                    recordIdOpaque_len);
3429         }
3430         else if (recordIdNumber)
3431         {
3432             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3433
3434             notToKeep->elements[0]->u.number =
3435                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3436         }
3437         else
3438             notToKeep->elements[0]->u.opaque = 0;
3439         notToKeep->elements[0]->supplementalId = 0;
3440         if (correlationInfo_note || correlationInfo_id)
3441         {
3442             Z_IUCorrelationInfo *ci;
3443             ci = notToKeep->elements[0]->correlationInfo =
3444                 (Z_IUCorrelationInfo *) odr_malloc(p->odr_out, sizeof(*ci));
3445             ci->note = odr_strdup_null(p->odr_out, correlationInfo_note);
3446             ci->id = correlationInfo_id ?
3447                 odr_intdup(p->odr_out, atoi(correlationInfo_id)) : 0;
3448         }
3449         else
3450             notToKeep->elements[0]->correlationInfo = 0;
3451         if (recordOpaque_buf)
3452         {
3453             notToKeep->elements[0]->record =
3454                 z_ext_record_oid_any(p->odr_out, syntax_oid,
3455                                  recordOpaque_buf, recordOpaque_len);
3456         }
3457         else
3458         {
3459             notToKeep->elements[0]->record =
3460                 z_ext_record_oid(p->odr_out, syntax_oid,
3461                                  record_buf, record_len);
3462         }
3463     }
3464     if (0 && apdu)
3465     {
3466         ODR print = odr_createmem(ODR_PRINT);
3467
3468         z_APDU(print, &apdu, 0, 0);
3469         odr_destroy(print);
3470     }
3471     return apdu;
3472 }
3473
3474 ZOOM_API(void)
3475     ZOOM_package_send(ZOOM_package p, const char *type)
3476 {
3477     Z_APDU *apdu = 0;
3478     ZOOM_connection c;
3479     if (!p)
3480         return;
3481     c = p->connection;
3482     odr_reset(p->odr_out);
3483     xfree(p->buf_out);
3484     p->buf_out = 0;
3485     if (!strcmp(type, "itemorder"))
3486     {
3487         apdu = create_es_package(p, yaz_oid_extserv_item_order);
3488         if (apdu)
3489         {
3490             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3491
3492             r->direct_reference =
3493                 odr_oiddup(p->odr_out, yaz_oid_extserv_item_order);
3494             r->descriptor = 0;
3495             r->which = Z_External_itemOrder;
3496             r->indirect_reference = 0;
3497             r->u.itemOrder = encode_item_order(p);
3498
3499             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3500         }
3501     }
3502     else if (!strcmp(type, "create"))  /* create database */
3503     {
3504         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3505                                     0, 0);
3506     }
3507     else if (!strcmp(type, "drop"))  /* drop database */
3508     {
3509         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3510                                     0, 0);
3511     }
3512     else if (!strcmp(type, "commit"))  /* commit changes */
3513     {
3514         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3515                                     0, 0);
3516     }
3517     else if (!strcmp(type, "update")) /* update record(s) */
3518     {
3519         apdu = create_update_package(p);
3520     }
3521     else if (!strcmp(type, "xmlupdate"))
3522     {
3523         apdu = create_xmlupdate_package(p);
3524     }
3525     if (apdu)
3526     {
3527         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3528         {
3529             char *buf;
3530
3531             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3532             task->u.package = p;
3533             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3534             p->buf_out = (char *) xmalloc(p->len_out);
3535             memcpy(p->buf_out, buf, p->len_out);
3536
3537             (p->refcount)++;
3538             if (!c->async)
3539             {
3540                 while (ZOOM_event(1, &c))
3541                     ;
3542             }
3543         }
3544     }
3545 }
3546
3547 ZOOM_API(ZOOM_package)
3548     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3549 {
3550     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3551
3552     p->connection = c;
3553     p->odr_out = odr_createmem(ODR_ENCODE);
3554     p->options = ZOOM_options_create_with_parent2(options, c->options);
3555     p->refcount = 1;
3556     p->buf_out = 0;
3557     p->len_out = 0;
3558     return p;
3559 }
3560
3561 ZOOM_API(void)
3562     ZOOM_package_destroy(ZOOM_package p)
3563 {
3564     if (!p)
3565         return;
3566     (p->refcount)--;
3567     if (p->refcount == 0)
3568     {
3569         odr_destroy(p->odr_out);
3570         xfree(p->buf_out);
3571
3572         ZOOM_options_destroy(p->options);
3573         xfree(p);
3574     }
3575 }
3576
3577 ZOOM_API(const char *)
3578     ZOOM_package_option_get(ZOOM_package p, const char *key)
3579 {
3580     return ZOOM_options_get(p->options, key);
3581 }
3582
3583 ZOOM_API(const char *)
3584     ZOOM_package_option_getl(ZOOM_package p, const char *key, int *lenp)
3585 {
3586     return ZOOM_options_getl(p->options, key, lenp);
3587 }
3588
3589 ZOOM_API(void)
3590     ZOOM_package_option_set(ZOOM_package p, const char *key,
3591                             const char *val)
3592 {
3593     ZOOM_options_set(p->options, key, val);
3594 }
3595
3596 ZOOM_API(void)
3597     ZOOM_package_option_setl(ZOOM_package p, const char *key,
3598                              const char *val, int len)
3599 {
3600     ZOOM_options_setl(p->options, key, val, len);
3601 }
3602
3603 static int ZOOM_connection_exec_task(ZOOM_connection c)
3604 {
3605     ZOOM_task task = c->tasks;
3606     zoom_ret ret = zoom_complete;
3607
3608     if (!task)
3609         return 0;
3610     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3611             c, task->which, task->running);
3612     if (c->error != ZOOM_ERROR_NONE)
3613     {
3614         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3615                 "removing tasks because of error = %d", c, c->error);
3616         ZOOM_connection_remove_tasks(c);
3617         return 0;
3618     }
3619     if (task->running)
3620     {
3621         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3622                 "task already running", c);
3623         return 0;
3624     }
3625     task->running = 1;
3626     ret = zoom_complete;
3627     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3628     {
3629         switch (task->which)
3630         {
3631         case ZOOM_TASK_SEARCH:
3632             if (c->proto == PROTO_HTTP)
3633                 ret = ZOOM_connection_srw_send_search(c);
3634             else
3635                 ret = ZOOM_connection_send_search(c);
3636             break;
3637         case ZOOM_TASK_RETRIEVE:
3638             if (c->proto == PROTO_HTTP)
3639                 ret = ZOOM_connection_srw_send_search(c);
3640             else
3641                 ret = send_present(c);
3642             break;
3643         case ZOOM_TASK_CONNECT:
3644             ret = do_connect(c);
3645             break;
3646         case ZOOM_TASK_SCAN:
3647             if (c->proto == PROTO_HTTP)
3648                 ret = ZOOM_connection_srw_send_scan(c);
3649             else
3650                 ret = ZOOM_connection_send_scan(c);
3651             break;
3652         case ZOOM_TASK_PACKAGE:
3653             ret = send_package(c);
3654             break;
3655         case ZOOM_TASK_SORT:
3656             c->tasks->u.sort.resultset->r_sort_spec =
3657                 c->tasks->u.sort.q->sort_spec;
3658             ret = send_sort(c, c->tasks->u.sort.resultset);
3659             break;
3660         }
3661     }
3662     else
3663     {
3664         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3665                 "remove tasks because no connection exist", c);
3666         ZOOM_connection_remove_tasks(c);
3667     }
3668     if (ret == zoom_complete)
3669     {
3670         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3671                 "task removed (complete)", c);
3672         ZOOM_connection_remove_task(c);
3673         return 0;
3674     }
3675     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3676             "task pending", c);
3677     return 1;
3678 }
3679
3680 static zoom_ret send_sort_present(ZOOM_connection c)
3681 {
3682     zoom_ret r = zoom_complete;
3683
3684     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3685         r = send_sort(c, c->tasks->u.search.resultset);
3686     if (r == zoom_complete)
3687         r = send_present(c);
3688     return r;
3689 }
3690
3691 static int es_response_taskpackage_update(ZOOM_connection c,
3692                 Z_IUUpdateTaskPackage *utp)
3693 {
3694         if (utp && utp->targetPart)
3695         {
3696                 Z_IUTargetPart *targetPart = utp->targetPart;
3697                 switch ( *targetPart->updateStatus ) {
3698                         case Z_IUTargetPart_success:
3699                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "success");
3700                                 break;
3701                         case Z_IUTargetPart_partial:
3702                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "partial");
3703                                 break;
3704                         case Z_IUTargetPart_failure:
3705                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "failure");
3706                                 if (targetPart->globalDiagnostics && targetPart->num_globalDiagnostics > 0)
3707                                         response_diag(c, targetPart->globalDiagnostics[0]);
3708                                 break;
3709                 }
3710                 // NOTE: Individual record status, surrogate diagnostics, and supplemental diagnostics ARE NOT REPORTED.
3711         }
3712     return 1;
3713 }
3714
3715 static int es_response_taskpackage(ZOOM_connection c,
3716                                    Z_TaskPackage *taskPackage)
3717 {
3718         // targetReference
3719         Odr_oct *id = taskPackage->targetReference;
3720         if (id)
3721                 ZOOM_options_setl(c->tasks->u.package->options,
3722                                                         "targetReference", (char*) id->buf, id->len);
3723
3724         // taskStatus
3725         switch ( *taskPackage->taskStatus ) {
3726                 case Z_TaskPackage_pending:
3727                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "pending");
3728                         break;
3729                 case Z_TaskPackage_active:
3730                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "active");
3731                         break;
3732                 case Z_TaskPackage_complete:
3733                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "complete");
3734                         break;
3735                 case Z_TaskPackage_aborted:
3736                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "aborted");
3737                         if ( taskPackage->num_packageDiagnostics && taskPackage->packageDiagnostics )
3738                                 response_diag(c, taskPackage->packageDiagnostics[0]);
3739                         break;
3740         }
3741
3742         // taskSpecificParameters
3743         // NOTE: Only Update implemented, no others.
3744         if ( taskPackage->taskSpecificParameters->which == Z_External_update ) {
3745                         Z_IUUpdateTaskPackage *utp = taskPackage->taskSpecificParameters->u.update->u.taskPackage;
3746                         es_response_taskpackage_update(c, utp);
3747         }
3748         return 1;
3749 }
3750
3751
3752 static int es_response(ZOOM_connection c,
3753                        Z_ExtendedServicesResponse *res)
3754 {
3755     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3756         return 0;
3757     switch (*res->operationStatus) {
3758         case Z_ExtendedServicesResponse_done:
3759             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "done");
3760             break;
3761         case Z_ExtendedServicesResponse_accepted:
3762             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "accepted");
3763             break;
3764         case Z_ExtendedServicesResponse_failure:
3765             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "failure");
3766             if (res->diagnostics && res->num_diagnostics > 0)
3767                 response_diag(c, res->diagnostics[0]);
3768             break;
3769     }
3770     if (res->taskPackage &&
3771         res->taskPackage->which == Z_External_extendedService)
3772     {
3773         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3774         es_response_taskpackage(c, taskPackage);
3775     }
3776     if (res->taskPackage &&
3777         res->taskPackage->which == Z_External_octet)
3778     {
3779         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3780         ZOOM_options_setl(c->tasks->u.package->options,
3781                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3782     }
3783     return 1;
3784 }
3785
3786 static void interpret_init_diag(ZOOM_connection c,
3787                                 Z_DiagnosticFormat *diag)
3788 {
3789     if (diag->num > 0)
3790     {
3791         Z_DiagnosticFormat_s *ds = diag->elements[0];
3792         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3793             response_default_diag(c, ds->u.defaultDiagRec);
3794     }
3795 }
3796
3797
3798 static void interpret_otherinformation_field(ZOOM_connection c,
3799                                              Z_OtherInformation *ui)
3800 {
3801     int i;
3802     for (i = 0; i < ui->num_elements; i++)
3803     {
3804         Z_OtherInformationUnit *unit = ui->list[i];
3805         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3806             unit->information.externallyDefinedInfo &&
3807             unit->information.externallyDefinedInfo->which ==
3808             Z_External_diag1)
3809         {
3810             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3811         }
3812     }
3813 }
3814
3815
3816 static void set_init_option(const char *name, void *clientData) {
3817     ZOOM_connection c = (ZOOM_connection) clientData;
3818     char buf[80];
3819
3820     sprintf(buf, "init_opt_%.70s", name);
3821     ZOOM_connection_option_set(c, buf, "1");
3822 }
3823
3824
3825 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3826 {
3827     Z_InitResponse *initrs;
3828
3829     ZOOM_connection_set_mask(c, 0);
3830     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3831     switch(apdu->which)
3832     {
3833     case Z_APDU_initResponse:
3834         yaz_log(log_api, "%p recv_apdu: Received Init response", c);
3835         initrs = apdu->u.initResponse;
3836         ZOOM_connection_option_set(c, "serverImplementationId",
3837                                    initrs->implementationId ?
3838                                    initrs->implementationId : "");
3839         ZOOM_connection_option_set(c, "serverImplementationName",
3840                                    initrs->implementationName ?
3841                                    initrs->implementationName : "");
3842         ZOOM_connection_option_set(c, "serverImplementationVersion",
3843                                    initrs->implementationVersion ?
3844                                    initrs->implementationVersion : "");
3845         /* Set the three old options too, for old applications */
3846         ZOOM_connection_option_set(c, "targetImplementationId",
3847                                    initrs->implementationId ?
3848                                    initrs->implementationId : "");
3849         ZOOM_connection_option_set(c, "targetImplementationName",
3850                                    initrs->implementationName ?
3851                                    initrs->implementationName : "");
3852         ZOOM_connection_option_set(c, "targetImplementationVersion",
3853                                    initrs->implementationVersion ?
3854                                    initrs->implementationVersion : "");
3855
3856         /* Make initrs->options available as ZOOM-level options */
3857         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3858
3859         if (!*initrs->result)
3860         {
3861             Z_External *uif = initrs->userInformationField;
3862
3863             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3864
3865             if (uif && uif->which == Z_External_userInfo1)
3866                 interpret_otherinformation_field(c, uif->u.userInfo1);
3867         }
3868         else
3869         {
3870             char *cookie =
3871                 yaz_oi_get_string_oid(&apdu->u.initResponse->otherInfo,
3872                                       yaz_oid_userinfo_cookie, 1, 0);
3873             xfree(c->cookie_in);
3874             c->cookie_in = 0;
3875             if (cookie)
3876                 c->cookie_in = xstrdup(cookie);
3877             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3878                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3879                 c->support_named_resultsets = 1;
3880             if (c->tasks)
3881             {
3882                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3883                 ZOOM_connection_remove_task(c);
3884             }
3885             ZOOM_connection_exec_task(c);
3886         }
3887         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3888         {
3889             NMEM tmpmem = nmem_create();
3890             Z_CharSetandLanguageNegotiation *p =
3891                 yaz_get_charneg_record(initrs->otherInfo);
3892
3893             if (p)
3894             {
3895                 char *charset = NULL, *lang = NULL;
3896                 int sel;
3897
3898                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3899                 yaz_log(log_details, "%p recv_apdu target accepted: "
3900                         "charset %s, language %s, select %d",
3901                         c,
3902                         charset ? charset : "none", lang ? lang : "none", sel);
3903                 if (charset)
3904                     ZOOM_connection_option_set(c, "negotiation-charset",
3905                                                charset);
3906                 if (lang)
3907                     ZOOM_connection_option_set(c, "negotiation-lang",
3908                                                lang);
3909
3910                 ZOOM_connection_option_set(
3911                     c,  "negotiation-charset-in-effect-for-records",
3912                     (sel != 0) ? "1" : "0");
3913                 nmem_destroy(tmpmem);
3914             }
3915         }
3916         break;
3917     case Z_APDU_searchResponse:
3918         yaz_log(log_api, "%p recv_apdu Search response", c);
3919         handle_search_response(c, apdu->u.searchResponse);
3920         if (send_sort_present(c) == zoom_complete)
3921             ZOOM_connection_remove_task(c);
3922         break;
3923     case Z_APDU_presentResponse:
3924         yaz_log(log_api, "%p recv_apdu Present response", c);
3925         handle_present_response(c, apdu->u.presentResponse);
3926         if (send_present(c) == zoom_complete)
3927             ZOOM_connection_remove_task(c);
3928         break;
3929     case Z_APDU_sortResponse:
3930         yaz_log(log_api, "%p recv_apdu Sort response", c);
3931         sort_response(c, apdu->u.sortResponse);
3932         if (send_present(c) == zoom_complete)
3933             ZOOM_connection_remove_task(c);
3934         break;
3935     case Z_APDU_scanResponse:
3936         yaz_log(log_api, "%p recv_apdu Scan response", c);
3937         scan_response(c, apdu->u.scanResponse);
3938         ZOOM_connection_remove_task(c);
3939         break;
3940     case Z_APDU_extendedServicesResponse:
3941         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3942         es_response(c, apdu->u.extendedServicesResponse);
3943         ZOOM_connection_remove_task(c);
3944         break;
3945     case Z_APDU_close:
3946         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3947         if (!ZOOM_test_reconnect(c))
3948         {
3949             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3950             do_close(c);
3951         }
3952         break;
3953     default:
3954         yaz_log(log_api, "%p Received unknown PDU", c);
3955         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3956         do_close(c);
3957     }
3958 }
3959
3960 #if YAZ_HAVE_XML2
3961 static zoom_ret handle_srw_response(ZOOM_connection c,
3962                                     Z_SRW_searchRetrieveResponse *res)
3963 {
3964     ZOOM_resultset resultset = 0;
3965     int i;
3966     NMEM nmem;
3967     ZOOM_Event event;
3968     int *start, *count;
3969     const char *syntax, *elementSetName;
3970
3971     if (!c->tasks)
3972         return zoom_complete;
3973
3974     switch(c->tasks->which)
3975     {
3976     case ZOOM_TASK_SEARCH:
3977         resultset = c->tasks->u.search.resultset;
3978         start = &c->tasks->u.search.start;
3979         count = &c->tasks->u.search.count;
3980         syntax = c->tasks->u.search.syntax;
3981         elementSetName = c->tasks->u.search.elementSetName;
3982
3983         if (!c->tasks->u.search.recv_search_fired)
3984         {
3985             event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3986             ZOOM_connection_put_event(c, event);
3987             c->tasks->u.search.recv_search_fired = 1;
3988         }
3989         break;
3990     case ZOOM_TASK_RETRIEVE:
3991         resultset = c->tasks->u.retrieve.resultset;
3992         start = &c->tasks->u.retrieve.start;
3993         count = &c->tasks->u.retrieve.count;
3994         syntax = c->tasks->u.retrieve.syntax;
3995         elementSetName = c->tasks->u.retrieve.elementSetName;
3996         break;
3997     default:
3998         return zoom_complete;
3999     }
4000
4001     resultset->size = 0;
4002
4003     if (res->resultSetId)
4004         ZOOM_resultset_option_set(resultset, "resultSetId", res->resultSetId);
4005
4006     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
4007
4008     if (res->num_diagnostics > 0)
4009     {
4010         set_SRU_error(c, &res->diagnostics[0]);
4011     }
4012     else
4013     {
4014         if (res->numberOfRecords)
4015             resultset->size = *res->numberOfRecords;
4016         for (i = 0; i<res->num_records; i++)
4017         {
4018             int pos;
4019             Z_SRW_record *sru_rec;
4020             Z_SRW_diagnostic *diag = 0;
4021             int num_diag;
4022
4023             Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
4024                 odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
4025
4026             if (res->records[i].recordPosition &&
4027                 *res->records[i].recordPosition > 0)
4028                 pos = *res->records[i].recordPosition - 1;
4029             else
4030                 pos = *start + i;
4031
4032             sru_rec = &res->records[i];
4033
4034             npr->databaseName = 0;
4035             npr->which = Z_NamePlusRecord_databaseRecord;
4036             npr->u.databaseRecord = (Z_External *)
4037                 odr_malloc(c->odr_in, sizeof(Z_External));
4038             npr->u.databaseRecord->descriptor = 0;
4039             npr->u.databaseRecord->direct_reference =
4040                 odr_oiddup(c->odr_in, yaz_oid_recsyn_xml);
4041             npr->u.databaseRecord->which = Z_External_octet;
4042
4043             npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
4044                 odr_malloc(c->odr_in, sizeof(Odr_oct));
4045             npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
4046                 sru_rec->recordData_buf;
4047             npr->u.databaseRecord->u.octet_aligned->len =
4048                 npr->u.databaseRecord->u.octet_aligned->size =
4049                 sru_rec->recordData_len;
4050
4051             if (sru_rec->recordSchema
4052                 && !strcmp(sru_rec->recordSchema,
4053                            "info:srw/schema/1/diagnostics-v1.1"))
4054             {
4055                 sru_decode_surrogate_diagnostics(sru_rec->recordData_buf,
4056                                                  sru_rec->recordData_len,
4057                                                  &diag, &num_diag,
4058                                                  resultset->odr);
4059             }
4060             record_cache_add(resultset, npr, pos, syntax, elementSetName,
4061                              sru_rec->recordSchema, diag);
4062         }
4063         *count -= i;
4064         *start += i;
4065         if (*count + *start > resultset->size)
4066             *count = resultset->size - *start;
4067         if (*count < 0)
4068             *count = 0;
4069
4070         nmem = odr_extract_mem(c->odr_in);
4071         nmem_transfer(odr_getmem(resultset->odr), nmem);
4072         nmem_destroy(nmem);
4073
4074         if (*count > 0)
4075             return ZOOM_connection_srw_send_search(c);
4076     }
4077     return zoom_complete;
4078 }
4079 #endif
4080
4081 #if YAZ_HAVE_XML2
4082 static void handle_srw_scan_response(ZOOM_connection c,
4083                                      Z_SRW_scanResponse *res)
4084 {
4085     NMEM nmem = odr_extract_mem(c->odr_in);
4086     ZOOM_scanset scan;
4087
4088     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
4089         return;
4090     scan = c->tasks->u.scan.scan;
4091
4092     if (res->num_diagnostics > 0)
4093         set_SRU_error(c, &res->diagnostics[0]);
4094
4095     scan->scan_response = 0;
4096     scan->srw_scan_response = res;
4097     nmem_transfer(odr_getmem(scan->odr), nmem);
4098
4099     ZOOM_options_set_int(scan->options, "number", res->num_terms);
4100     nmem_destroy(nmem);
4101 }
4102 #endif
4103
4104 #if YAZ_HAVE_XML2
4105 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
4106 {
4107     zoom_ret cret = zoom_complete;
4108     int ret = -1;
4109     const char *addinfo = 0;
4110     const char *connection_head = z_HTTP_header_lookup(hres->headers,
4111                                                        "Connection");
4112     ZOOM_connection_set_mask(c, 0);
4113     yaz_log(log_details, "%p handle_http", c);
4114
4115     if (!yaz_srw_check_content_type(hres))
4116         addinfo = "content-type";
4117     else
4118     {
4119         Z_SOAP *soap_package = 0;
4120         ODR o = c->odr_in;
4121         Z_SOAP_Handler soap_handlers[2] = {
4122             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
4123             {0, 0, 0}
4124         };
4125         ret = z_soap_codec(o, &soap_package,
4126                            &hres->content_buf, &hres->content_len,
4127                            soap_handlers);
4128         if (!ret && soap_package->which == Z_SOAP_generic &&
4129             soap_package->u.generic->no == 0)
4130         {
4131             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
4132
4133             ZOOM_options_set(c->options, "sru_version", sr->srw_version);
4134             ZOOM_options_setl(c->options, "sru_extra_response_data",
4135                 sr->extraResponseData_buf, sr->extraResponseData_len);
4136             if (sr->which == Z_SRW_searchRetrieve_response)
4137                 cret = handle_srw_response(c, sr->u.response);
4138             else if (sr->which == Z_SRW_scan_response)
4139                 handle_srw_scan_response(c, sr->u.scan_response);
4140             else
4141                 ret = -1;
4142         }
4143         else if (!ret && (soap_package->which == Z_SOAP_fault
4144                           || soap_package->which == Z_SOAP_error))
4145         {
4146             set_HTTP_error(c, hres->code,
4147                            soap_package->u.fault->fault_code,
4148                            soap_package->u.fault->fault_string);
4149         }
4150         else
4151             ret = -1;
4152     }
4153     if (ret)
4154     {
4155         if (hres->code != 200)
4156             set_HTTP_error(c, hres->code, 0, 0);
4157         else
4158             set_ZOOM_error(c, ZOOM_ERROR_DECODE, addinfo);
4159         do_close(c);
4160     }
4161     if (cret == zoom_complete)
4162         ZOOM_connection_remove_task(c);
4163     if (!strcmp(hres->version, "1.0"))
4164     {
4165         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
4166         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
4167             do_close(c);
4168     }
4169     else
4170     {
4171         /* HTTP 1.1: only if no close we stay alive .. */
4172         if (connection_head && !strcmp(connection_head, "close"))
4173             do_close(c);
4174     }
4175 }
4176 #endif
4177
4178 static int do_read(ZOOM_connection c)
4179 {
4180     int r, more;
4181     ZOOM_Event event;
4182
4183     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
4184     ZOOM_connection_put_event(c, event);
4185
4186     r = cs_get(c->cs, &c->buf_in, &c->len_in);
4187     more = cs_more(c->cs);
4188     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
4189     if (r == 1)
4190         return 0;
4191     if (r <= 0)
4192     {
4193         if (!ZOOM_test_reconnect(c))
4194         {
4195             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4196             do_close(c);
4197         }
4198     }
4199     else
4200     {
4201         Z_GDU *gdu;
4202         ZOOM_Event event;
4203
4204         odr_reset(c->odr_in);
4205         odr_setbuf(c->odr_in, c->buf_in, r, 0);
4206         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
4207         ZOOM_connection_put_event(c, event);
4208
4209         if (!z_GDU(c->odr_in, &gdu, 0, 0))
4210         {
4211             int x;
4212             int err = odr_geterrorx(c->odr_in, &x);
4213             char msg[100];
4214             const char *element = odr_getelement(c->odr_in);
4215             yaz_snprintf(msg, sizeof(msg),
4216                     "ODR code %d:%d element=%s offset=%d",
4217                     err, x, element ? element : "<unknown>",
4218                     odr_offset(c->odr_in));
4219             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
4220             if (log_api)
4221             {
4222                 FILE *ber_file = yaz_log_file();
4223                 if (ber_file)
4224                     odr_dumpBER(ber_file, c->buf_in, r);
4225             }
4226             do_close(c);
4227         }
4228         else
4229         {
4230             if (c->odr_print)
4231                 z_GDU(c->odr_print, &gdu, 0, 0);
4232             if (gdu->which == Z_GDU_Z3950)
4233                 recv_apdu(c, gdu->u.z3950);
4234             else if (gdu->which == Z_GDU_HTTP_Response)
4235             {
4236 #if YAZ_HAVE_XML2
4237                 handle_http(c, gdu->u.HTTP_Response);
4238 #else
4239                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
4240                 do_close(c);
4241 #endif
4242             }
4243         }
4244         c->reconnect_ok = 0;
4245     }
4246     return 1;
4247 }
4248
4249 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
4250 {
4251     int r;
4252     ZOOM_Event event;
4253
4254     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
4255     ZOOM_connection_put_event(c, event);
4256
4257     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
4258     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
4259     {
4260         yaz_log(log_details, "%p do_write_ex write failed", c);
4261         if (ZOOM_test_reconnect(c))
4262         {
4263             return zoom_pending;
4264         }
4265         if (c->state == STATE_CONNECTING)
4266             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4267         else
4268             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4269         do_close(c);
4270         return zoom_complete;
4271     }
4272     else if (r == 1)
4273     {
4274         int mask = ZOOM_SELECT_EXCEPT;
4275         if (c->cs->io_pending & CS_WANT_WRITE)
4276             mask += ZOOM_SELECT_WRITE;
4277         if (c->cs->io_pending & CS_WANT_READ)
4278             mask += ZOOM_SELECT_READ;
4279         ZOOM_connection_set_mask(c, mask);
4280         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
4281                 c, c->mask);
4282     }
4283     else
4284     {
4285         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
4286         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
4287                 c, c->mask);
4288     }
4289     return zoom_pending;
4290 }
4291
4292 static zoom_ret do_write(ZOOM_connection c)
4293 {
4294     return do_write_ex(c, c->buf_out, c->len_out);
4295 }
4296
4297
4298 ZOOM_API(const char *)
4299     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
4300 {
4301     return ZOOM_options_get(c->options, key);
4302 }
4303
4304 ZOOM_API(const char *)
4305     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
4306 {
4307     return ZOOM_options_getl(c->options, key, lenp);
4308 }
4309
4310 ZOOM_API(void)
4311     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
4312                                const char *val)
4313 {
4314     ZOOM_options_set(c->options, key, val);
4315 }
4316
4317 ZOOM_API(void)
4318     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
4319                                 const char *val, int len)
4320 {
4321     ZOOM_options_setl(c->options, key, val, len);
4322 }
4323
4324 ZOOM_API(const char *)
4325     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
4326 {
4327     return ZOOM_options_get(r->options, key);
4328 }
4329
4330 ZOOM_API(void)
4331     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
4332                               const char *val)
4333 {
4334     ZOOM_options_set(r->options, key, val);
4335 }
4336
4337
4338 ZOOM_API(int)
4339     ZOOM_connection_errcode(ZOOM_connection c)
4340 {
4341     return ZOOM_connection_error(c, 0, 0);
4342 }
4343
4344 ZOOM_API(const char *)
4345     ZOOM_connection_errmsg(ZOOM_connection c)
4346 {
4347     const char *msg;
4348     ZOOM_connection_error(c, &msg, 0);
4349     return msg;
4350 }
4351
4352 ZOOM_API(const char *)
4353     ZOOM_connection_addinfo(ZOOM_connection c)
4354 {
4355     const char *addinfo;
4356     ZOOM_connection_error(c, 0, &addinfo);
4357     return addinfo;
4358 }
4359
4360 ZOOM_API(const char *)
4361     ZOOM_connection_diagset(ZOOM_connection c)
4362 {
4363     const char *diagset;
4364     ZOOM_connection_error_x(c, 0, 0, &diagset);
4365     return diagset;
4366 }
4367
4368 ZOOM_API(const char *)
4369     ZOOM_diag_str(int error)
4370 {
4371     switch (error)
4372     {
4373     case ZOOM_ERROR_NONE:
4374         return "No error";
4375     case ZOOM_ERROR_CONNECT:
4376         return "Connect failed";
4377     case ZOOM_ERROR_MEMORY:
4378         return "Out of memory";
4379     case ZOOM_ERROR_ENCODE:
4380         return "Encoding failed";
4381     case ZOOM_ERROR_DECODE:
4382         return "Decoding failed";
4383     case ZOOM_ERROR_CONNECTION_LOST:
4384         return "Connection lost";
4385     case ZOOM_ERROR_INIT:
4386         return "Init rejected";
4387     case ZOOM_ERROR_INTERNAL:
4388         return "Internal failure";
4389     case ZOOM_ERROR_TIMEOUT:
4390         return "Timeout";
4391     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
4392         return "Unsupported protocol";
4393     case ZOOM_ERROR_UNSUPPORTED_QUERY:
4394         return "Unsupported query type";
4395     case ZOOM_ERROR_INVALID_QUERY:
4396         return "Invalid query";
4397     case ZOOM_ERROR_CQL_PARSE:
4398         return "CQL parsing error";
4399     case ZOOM_ERROR_CQL_TRANSFORM:
4400         return "CQL transformation error";
4401     case ZOOM_ERROR_CCL_CONFIG:
4402         return "CCL configuration error";
4403     case ZOOM_ERROR_CCL_PARSE:
4404         return "CCL parsing error";
4405     default:
4406         return diagbib1_str(error);
4407     }
4408 }
4409
4410 ZOOM_API(int)
4411     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
4412                             const char **addinfo, const char **diagset)
4413 {
4414     int error = c->error;
4415     if (cp)
4416     {
4417         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
4418             *cp = ZOOM_diag_str(error);
4419         else if (!strcmp(c->diagset, "HTTP"))
4420             *cp = z_HTTP_errmsg(c->error);
4421         else if (!strcmp(c->diagset, "Bib-1"))
4422             *cp = ZOOM_diag_str(error);
4423         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
4424             *cp = yaz_diag_srw_str(c->error);
4425         else
4426             *cp = "Unknown error and diagnostic set";
4427     }
4428     if (addinfo)
4429         *addinfo = c->addinfo ? c->addinfo : "";
4430     if (diagset)
4431         *diagset = c->diagset ? c->diagset : "";
4432     return c->error;
4433 }
4434
4435 ZOOM_API(int)
4436     ZOOM_connection_error(ZOOM_connection c, const char **cp,
4437                           const char **addinfo)
4438 {
4439     return ZOOM_connection_error_x(c, cp, addinfo, 0);
4440 }
4441
4442 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
4443 {
4444     ZOOM_Event event = 0;
4445     int r = cs_look(c->cs);
4446     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
4447             c, mask, r);
4448
4449     if (r == CS_NONE)
4450     {
4451         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4452         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4453         do_close(c);
4454         ZOOM_connection_put_event(c, event);
4455     }
4456     else if (r == CS_CONNECT)
4457     {
4458         int ret = ret = cs_rcvconnect(c->cs);
4459         yaz_log(log_details, "%p ZOOM_connection_do_io "
4460                 "cs_rcvconnect returned %d", c, ret);
4461         if (ret == 1)
4462         {
4463             int mask = ZOOM_SELECT_EXCEPT;
4464             if (c->cs->io_pending & CS_WANT_WRITE)
4465                 mask += ZOOM_SELECT_WRITE;
4466             if (c->cs->io_pending & CS_WANT_READ)
4467                 mask += ZOOM_SELECT_READ;
4468             ZOOM_connection_set_mask(c, mask);
4469             event = ZOOM_Event_create(ZOOM_EVENT_NONE);
4470             ZOOM_connection_put_event(c, event);
4471         }
4472         else if (ret == 0)
4473         {
4474             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4475             ZOOM_connection_put_event(c, event);
4476             get_cert(c);
4477             if (c->proto == PROTO_Z3950)
4478                 ZOOM_connection_send_init(c);
4479             else
4480             {
4481                 /* no init request for SRW .. */
4482                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4483                 ZOOM_connection_remove_task(c);
4484                 ZOOM_connection_set_mask(c, 0);
4485                 ZOOM_connection_exec_task(c);
4486             }
4487             c->state = STATE_ESTABLISHED;
4488         }
4489         else
4490         {
4491             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4492             do_close(c);
4493         }
4494     }
4495     else
4496     {
4497         if (mask & ZOOM_SELECT_EXCEPT)
4498         {
4499             if (!ZOOM_test_reconnect(c))
4500             {
4501                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4502                 do_close(c);
4503             }
4504             return;
4505         }
4506         if (mask & ZOOM_SELECT_READ)
4507             do_read(c);
4508         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4509             do_write(c);
4510     }
4511 }
4512
4513 ZOOM_API(int)
4514     ZOOM_connection_last_event(ZOOM_connection cs)
4515 {
4516     if (!cs)
4517         return ZOOM_EVENT_NONE;
4518     return cs->last_event;
4519 }
4520
4521
4522 static void cql2pqf_wrbuf_puts(const char *buf, void *client_data)
4523 {
4524     WRBUF wrbuf = (WRBUF) client_data;
4525     wrbuf_puts(wrbuf, buf);
4526 }
4527
4528 /*
4529  * Returns an xmalloc()d string containing RPN that corresponds to the
4530  * CQL passed in.  On error, sets the Connection object's error state
4531  * and returns a null pointer.
4532  * ### We could cache CQL parser and/or transformer in Connection.
4533  */
4534 static char *cql2pqf(ZOOM_connection c, const char *cql)
4535 {
4536     CQL_parser parser;
4537     int error;
4538     const char *cqlfile;
4539     cql_transform_t trans;
4540     char *result = 0;
4541
4542     parser = cql_parser_create();
4543     if ((error = cql_parser_string(parser, cql)) != 0) {
4544         cql_parser_destroy(parser);
4545         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4546         return 0;
4547     }
4548
4549     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4550     if (cqlfile == 0)
4551     {
4552         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4553     }
4554     else if ((trans = cql_transform_open_fname(cqlfile)) == 0)
4555     {
4556         char buf[512];
4557         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4558                 cqlfile, strerror(errno));
4559         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4560     }
4561     else
4562     {
4563         WRBUF wrbuf_result = wrbuf_alloc();
4564         error = cql_transform(trans, cql_parser_result(parser),
4565                               cql2pqf_wrbuf_puts, wrbuf_result);
4566         if (error != 0) {
4567             char buf[512];
4568             const char *addinfo;
4569             error = cql_transform_error(trans, &addinfo);
4570             sprintf(buf, "%.200s (addinfo=%.200s)",
4571                     cql_strerror(error), addinfo);
4572             set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4573         }
4574         else
4575         {
4576             result = xstrdup(wrbuf_cstr(wrbuf_result));
4577         }
4578         cql_transform_close(trans);
4579         wrbuf_destroy(wrbuf_result);
4580     }
4581     cql_parser_destroy(parser);
4582     return result;
4583 }
4584
4585 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4586 {
4587     if (c->mask)
4588     {
4589         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4590         /* timeout and this connection was waiting */
4591         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4592         do_close(c);
4593         ZOOM_connection_put_event(c, event);
4594     }
4595     return 0;
4596 }
4597
4598 ZOOM_API(int)
4599     ZOOM_connection_process(ZOOM_connection c)
4600 {
4601     ZOOM_Event event;
4602     if (!c)
4603         return 0;
4604
4605     event = ZOOM_connection_get_event(c);
4606     if (event)
4607     {
4608         ZOOM_Event_destroy(event);
4609         return 1;
4610     }
4611     ZOOM_connection_exec_task(c);
4612     event = ZOOM_connection_get_event(c);
4613     if (event)
4614     {
4615         ZOOM_Event_destroy(event);
4616         return 1;
4617     }
4618     return 0;
4619 }
4620
4621 ZOOM_API(int)
4622     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
4623 {
4624     int i;
4625
4626     yaz_log(log_details, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
4627
4628     for (i = 0; i<no; i++)
4629     {
4630         ZOOM_connection c = cs[i];
4631
4632         if (c && ZOOM_connection_process(c))
4633             return i+1;
4634     }
4635     return 0;
4636 }
4637
4638 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4639 {
4640     if (c->mask && mask)
4641         ZOOM_connection_do_io(c, mask);
4642     return 0;
4643 }
4644
4645 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4646 {
4647     if (c->cs)
4648         return cs_fileno(c->cs);
4649     return -1;
4650 }
4651
4652 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4653 {
4654     c->mask = mask;
4655     if (!c->cs)
4656         return -1;
4657     return 0;
4658 }
4659
4660 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4661 {
4662     if (c->cs)
4663         return c->mask;
4664     return 0;
4665 }
4666
4667 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4668 {
4669     return ZOOM_options_get_int(c->options, "timeout", 30);
4670 }
4671
4672 /*
4673  * Local variables:
4674  * c-basic-offset: 4
4675  * c-file-style: "Stroustrup"
4676  * indent-tabs-mode: nil
4677  * End:
4678  * vim: shiftwidth=4 tabstop=8 expandtab
4679  */
4680