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 #include <yaz/shptr.h>
  32
  33 #if SHPTR
  34 YAZ_SHPTR_TYPE(WRBUF)
  35 #endif
  36
  37 static int log_api = 0;
  38 static int log_details = 0;
  39
  40 typedef enum {
  41     zoom_pending,
  42     zoom_complete
  43 } zoom_ret;
  44
  45 static void resultset_destroy(ZOOM_resultset r);
  46 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
  47 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  48 static char *cql2pqf(ZOOM_connection c, const char *cql);
  49
  50 ZOOM_API(const char *) ZOOM_get_event_str(int event)
  51 {
  52     static const char *ar[] = {
  53         "NONE",
  54         "CONNECT",
  55         "SEND_DATA",
  56         "RECV_DATA",
  57         "TIMEOUT",
  58         "UNKNOWN",
  59         "SEND_APDU",
  60         "RECV_APDU",
  61         "RECV_RECORD",
  62         "RECV_SEARCH",
  63         "END"
  64     };
  65     return ar[event];
  66 }
  67
  68 /*
  69  * This wrapper is just for logging failed lookups.  It would be nicer
  70  * if it could cause failure when a lookup fails, but that's hard.
  71  */
  72 static Odr_oid *zoom_yaz_str_to_z3950oid(ZOOM_connection c,
  73                                      oid_class oid_class, const char *str) {
  74     Odr_oid *res = yaz_string_to_oid_odr(yaz_oid_std(), oid_class, str,
  75                                      c->odr_out);
  76     if (res == 0)
  77         yaz_log(YLOG_WARN, "%p OID lookup (%d, '%s') failed",
  78                 c, (int) oid_class, str);
  79     return res;
  80 }
  81
  82
  83 static void initlog(void)
  84 {
  85     static int log_level_initialized = 0;
  86     if (!log_level_initialized)
  87     {
  88         log_api = yaz_log_module_level("zoom");
  89         log_details = yaz_log_module_level("zoomdetails");
  90         log_level_initialized = 1;
  91     }
  92 }
  93
  94 static ZOOM_Event ZOOM_Event_create(int kind)
  95 {
  96     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  97     event->kind = kind;
  98     event->next = 0;
  99     event->prev = 0;
 100     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
 101     return event;
 102 }
 103
 104 static void ZOOM_Event_destroy(ZOOM_Event event)
 105 {
 106     xfree(event);
 107 }
 108
 109 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
 110 {
 111     if (c->m_queue_back)
 112     {
 113         c->m_queue_back->prev = event;
 114         assert(c->m_queue_front);
 115     }
 116     else
 117     {
 118         assert(!c->m_queue_front);
 119         c->m_queue_front = event;
 120     }
 121     event->next = c->m_queue_back;
 122     event->prev = 0;
 123     c->m_queue_back = event;
 124 }
 125
 126 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 127 {
 128     ZOOM_Event event = c->m_queue_front;
 129     if (!event)
 130     {
 131         c->last_event = ZOOM_EVENT_NONE;
 132         return 0;
 133     }
 134     assert(c->m_queue_back);
 135     c->m_queue_front = event->prev;
 136     if (c->m_queue_front)
 137     {
 138         assert(c->m_queue_back);
 139         c->m_queue_front->next = 0;
 140     }
 141     else
 142         c->m_queue_back = 0;
 143     c->last_event = event->kind;
 144     return event;
 145 }
 146
 147 static void ZOOM_connection_remove_events(ZOOM_connection c)
 148 {
 149     ZOOM_Event event;
 150     while ((event = ZOOM_connection_get_event(c)))
 151         ZOOM_Event_destroy(event);
 152 }
 153
 154 ZOOM_API(int) ZOOM_connection_peek_event(ZOOM_connection c)
 155 {
 156     ZOOM_Event event = c->m_queue_front;
 157
 158     return event ? event->kind : ZOOM_EVENT_NONE;
 159 }
 160
 161 void ZOOM_connection_remove_tasks(ZOOM_connection c);
 162
 163 static void set_dset_error(ZOOM_connection c, int error,
 164                            const char *dset,
 165                            const char *addinfo, const char *addinfo2)
 166 {
 167     char *cp;
 168
 169     xfree(c->addinfo);
 170     c->addinfo = 0;
 171     c->error = error;
 172     if (!c->diagset || strcmp(dset, c->diagset))
 173     {
 174         xfree(c->diagset);
 175         c->diagset = xstrdup(dset);
 176         /* remove integer part from SRW diagset .. */
 177         if ((cp = strrchr(c->diagset, '/')))
 178             *cp = '\0';
 179     }
 180     if (addinfo && addinfo2)
 181     {
 182         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 183         strcpy(c->addinfo, addinfo);
 184         strcat(c->addinfo, addinfo2);
 185     }
 186     else if (addinfo)
 187         c->addinfo = xstrdup(addinfo);
 188     if (error != ZOOM_ERROR_NONE)
 189     {
 190         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 191                 c, c->host_port ? c->host_port : "<>", dset, error,
 192                 addinfo ? addinfo : "",
 193                 addinfo2 ? addinfo2 : "");
 194         ZOOM_connection_remove_tasks(c);
 195     }
 196 }
 197
 198 static int uri_to_code(const char *uri)
 199 {
 200     int code = 0;
 201     const char *cp;
 202     if ((cp = strrchr(uri, '/')))
 203         code = atoi(cp+1);
 204     return code;
 205 }
 206
 207 #if YAZ_HAVE_XML2
 208 static void set_HTTP_error(ZOOM_connection c, int error,
 209                            const char *addinfo, const char *addinfo2)
 210 {
 211     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 212 }
 213
 214 static void set_SRU_error(ZOOM_connection c, Z_SRW_diagnostic *d)
 215 {
 216     const char *uri = d->uri;
 217     if (uri)
 218         set_dset_error(c, uri_to_code(uri), uri, d->details, 0);
 219 }
 220
 221 #endif
 222
 223
 224 static void set_ZOOM_error(ZOOM_connection c, int error,
 225                            const char *addinfo)
 226 {
 227     set_dset_error(c, error, "ZOOM", addinfo, 0);
 228 }
 229
 230 static void clear_error(ZOOM_connection c)
 231 {
 232     /*
 233      * If an error is tied to an operation then it's ok to clear: for
 234      * example, a diagnostic returned from a search is cleared by a
 235      * subsequent search.  However, problems such as Connection Lost
 236      * or Init Refused are not cleared, because they are not
 237      * recoverable: doing another search doesn't help.
 238      */
 239
 240     ZOOM_connection_remove_events(c);
 241     switch (c->error)
 242     {
 243     case ZOOM_ERROR_CONNECT:
 244     case ZOOM_ERROR_MEMORY:
 245     case ZOOM_ERROR_DECODE:
 246     case ZOOM_ERROR_CONNECTION_LOST:
 247     case ZOOM_ERROR_INIT:
 248     case ZOOM_ERROR_INTERNAL:
 249     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 250         break;
 251     default:
 252         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 253     }
 254 }
 255
 256 void ZOOM_connection_show_task(ZOOM_task task)
 257 {
 258     switch(task->which)
 259     {
 260     case ZOOM_TASK_SEARCH:
 261         yaz_log(YLOG_LOG, "search p=%p", task);
 262         break;
 263     case ZOOM_TASK_RETRIEVE:
 264         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 265         break;
 266     case ZOOM_TASK_CONNECT:
 267         yaz_log(YLOG_LOG, "connect p=%p", task);
 268         break;
 269     case ZOOM_TASK_SCAN:
 270         yaz_log(YLOG_LOG, "scan p=%p", task);
 271         break;
 272     }
 273 }
 274
 275 void ZOOM_connection_show_tasks(ZOOM_connection c)
 276 {
 277     ZOOM_task task;
 278     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 279     for (task = c->tasks; task; task = task->next)
 280         ZOOM_connection_show_task(task);
 281 }
 282
 283 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 284 {
 285     ZOOM_task *taskp = &c->tasks;
 286     while (*taskp)
 287         taskp = &(*taskp)->next;
 288     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 289     (*taskp)->running = 0;
 290     (*taskp)->which = which;
 291     (*taskp)->next = 0;
 292     clear_error(c);
 293     return *taskp;
 294 }
 295
 296 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 297 {
 298     return c->tasks ? 0 : 1;
 299 }
 300
 301 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 302 {
 303     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 304
 305     task->next = c->tasks;
 306     c->tasks = task;
 307
 308     task->running = 0;
 309     task->which = which;
 310     clear_error(c);
 311     return task;
 312 }
 313
 314 void ZOOM_connection_remove_task(ZOOM_connection c)
 315 {
 316     ZOOM_task task = c->tasks;
 317
 318     if (task)
 319     {
 320         c->tasks = task->next;
 321         switch (task->which)
 322         {
 323         case ZOOM_TASK_SEARCH:
 324             resultset_destroy(task->u.search.resultset);
 325             xfree(task->u.search.syntax);
 326             xfree(task->u.search.elementSetName);
 327             break;
 328         case ZOOM_TASK_RETRIEVE:
 329             resultset_destroy(task->u.retrieve.resultset);
 330             xfree(task->u.retrieve.syntax);
 331             xfree(task->u.retrieve.elementSetName);
 332             break;
 333         case ZOOM_TASK_CONNECT:
 334             break;
 335         case ZOOM_TASK_SCAN:
 336             ZOOM_scanset_destroy(task->u.scan.scan);
 337             break;
 338         case ZOOM_TASK_PACKAGE:
 339             ZOOM_package_destroy(task->u.package);
 340             break;
 341         case ZOOM_TASK_SORT:
 342             resultset_destroy(task->u.sort.resultset);
 343             ZOOM_query_destroy(task->u.sort.q);
 344             break;
 345         default:
 346             assert(0);
 347         }
 348         xfree(task);
 349
 350         if (!c->tasks)
 351         {
 352             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 353             ZOOM_connection_put_event(c, event);
 354         }
 355     }
 356 }
 357
 358 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 359 {
 360     while (c->tasks)
 361         ZOOM_connection_remove_task(c);
 362 }
 363
 364 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 365                                        const char *syntax,
 366                                        const char *elementSetName);
 367
 368 ZOOM_API(ZOOM_connection)
 369     ZOOM_connection_create(ZOOM_options options)
 370 {
 371     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 372
 373     initlog();
 374
 375     yaz_log(log_api, "%p ZOOM_connection_create", c);
 376
 377     c->proto = PROTO_Z3950;
 378     c->cs = 0;
 379     ZOOM_connection_set_mask(c, 0);
 380     c->reconnect_ok = 0;
 381     c->state = STATE_IDLE;
 382     c->addinfo = 0;
 383     c->diagset = 0;
 384     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 385     c->buf_in = 0;
 386     c->len_in = 0;
 387     c->buf_out = 0;
 388     c->len_out = 0;
 389     c->resultsets = 0;
 390
 391     c->options = ZOOM_options_create_with_parent(options);
 392
 393     c->host_port = 0;
 394     c->path = 0;
 395     c->proxy = 0;
 396
 397     c->charset = c->lang = 0;
 398
 399     c->cookie_out = 0;
 400     c->cookie_in = 0;
 401     c->client_IP = 0;
 402     c->tasks = 0;
 403
 404     c->user = 0;
 405     c->group = 0;
 406     c->password = 0;
 407
 408     c->maximum_record_size = 0;
 409     c->preferred_message_size = 0;
 410
 411     c->odr_in = odr_createmem(ODR_DECODE);
 412     c->odr_out = odr_createmem(ODR_ENCODE);
 413     c->odr_print = 0;
 414
 415     c->async = 0;
 416     c->support_named_resultsets = 0;
 417     c->last_event = ZOOM_EVENT_NONE;
 418
 419     c->m_queue_front = 0;
 420     c->m_queue_back = 0;
 421
 422     c->sru_version = 0;
 423     c->no_redirects = 0;
 424     return c;
 425 }
 426
 427
 428 /* set database names. Take local databases (if set); otherwise
 429    take databases given in ZURL (if set); otherwise use Default */
 430 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 431                                 int *num, ODR odr)
 432 {
 433     char **databaseNames;
 434     const char *cp = ZOOM_options_get(options, "databaseName");
 435
 436     if ((!cp || !*cp) && con->host_port)
 437     {
 438         if (strncmp(con->host_port, "unix:", 5) == 0)
 439             cp = strchr(con->host_port+5, ':');
 440         else
 441             cp = strchr(con->host_port, '/');
 442         if (cp)
 443             cp++;
 444     }
 445     if (!cp)
 446         cp = "Default";
 447     nmem_strsplit(odr_getmem(odr), "+", cp,  &databaseNames, num);
 448     return databaseNames;
 449 }
 450
 451 ZOOM_API(ZOOM_connection)
 452     ZOOM_connection_new(const char *host, int portnum)
 453 {
 454     ZOOM_connection c = ZOOM_connection_create(0);
 455
 456     ZOOM_connection_connect(c, host, portnum);
 457     return c;
 458 }
 459
 460 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 461 {
 462     if (!s || !*s)
 463         return zoom_sru_soap;
 464     if (!yaz_matchstr(s, "soap"))
 465         return zoom_sru_soap;
 466     else if (!yaz_matchstr(s, "get"))
 467         return zoom_sru_get;
 468     else if (!yaz_matchstr(s, "post"))
 469         return zoom_sru_post;
 470     return zoom_sru_error;
 471 }
 472
 473 ZOOM_API(void)
 474     ZOOM_connection_connect(ZOOM_connection c,
 475                             const char *host, int portnum)
 476 {
 477     const char *val;
 478     ZOOM_task task;
 479
 480     initlog();
 481
 482     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 483             c, host ? host : "null", portnum);
 484
 485     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 486     ZOOM_connection_remove_tasks(c);
 487
 488     if (c->odr_print)
 489     {
 490         odr_setprint(c->odr_print, 0); /* prevent destroy from fclose'ing */
 491         odr_destroy(c->odr_print);
 492     }
 493     if (ZOOM_options_get_bool(c->options, "apdulog", 0))
 494     {
 495         c->odr_print = odr_createmem(ODR_PRINT);
 496         odr_setprint(c->odr_print, yaz_log_file());
 497     }
 498     else
 499         c->odr_print = 0;
 500
 501     if (c->cs)
 502     {
 503         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 504         c->reconnect_ok = 1;
 505         return;
 506     }
 507     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 508     xfree(c->proxy);
 509     c->proxy = 0;
 510     val = ZOOM_options_get(c->options, "proxy");
 511     if (val && *val)
 512     {
 513         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 514         c->proxy = xstrdup(val);
 515     }
 516
 517     xfree(c->charset);
 518     c->charset = 0;
 519     val = ZOOM_options_get(c->options, "charset");
 520     if (val && *val)
 521     {
 522         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 523         c->charset = xstrdup(val);
 524     }
 525
 526     xfree(c->lang);
 527     val = ZOOM_options_get(c->options, "lang");
 528     if (val && *val)
 529     {
 530         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 531         c->lang = xstrdup(val);
 532     }
 533     else
 534         c->lang = 0;
 535
 536     if (host)
 537     {
 538         xfree(c->host_port);
 539         if (portnum)
 540         {
 541             char hostn[128];
 542             sprintf(hostn, "%.80s:%d", host, portnum);
 543             c->host_port = xstrdup(hostn);
 544         }
 545         else
 546             c->host_port = xstrdup(host);
 547     }
 548
 549     {
 550         /*
 551          * If the "<scheme>:" part of the host string is preceded by one
 552          * or more comma-separated <name>=<value> pairs, these are taken
 553          * to be options to be set on the connection object.  Among other
 554          * applications, this facility can be used to embed authentication
 555          * in a host string:
 556          *          user=admin,password=secret,tcp:localhost:9999
 557          */
 558         char *remainder = c->host_port;
 559         char *pcolon = strchr(remainder, ':');
 560         char *pcomma;
 561         char *pequals;
 562         while ((pcomma = strchr(remainder, ',')) != 0 &&
 563                (pcolon == 0 || pcomma < pcolon)) {
 564             *pcomma = '\0';
 565             if ((pequals = strchr(remainder, '=')) != 0) {
 566                 *pequals = '\0';
 567                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 568                 ZOOM_connection_option_set(c, remainder, pequals+1);
 569             }
 570             remainder = pcomma+1;
 571         }
 572
 573         if (remainder != c->host_port) {
 574             xfree(c->host_port);
 575             c->host_port = xstrdup(remainder);
 576             /*printf("# reset hp='%s'\n", remainder);*/
 577         }
 578     }
 579
 580     val = ZOOM_options_get(c->options, "sru");
 581     c->sru_mode = get_sru_mode_from_string(val);
 582
 583     xfree(c->sru_version);
 584     val = ZOOM_options_get(c->options, "sru_version");
 585     c->sru_version = xstrdup(val ? val : "1.2");
 586
 587     ZOOM_options_set(c->options, "host", c->host_port);
 588
 589     xfree(c->cookie_out);
 590     c->cookie_out = 0;
 591     val = ZOOM_options_get(c->options, "cookie");
 592     if (val && *val)
 593     {
 594         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 595         c->cookie_out = xstrdup(val);
 596     }
 597
 598     xfree(c->client_IP);
 599     c->client_IP = 0;
 600     val = ZOOM_options_get(c->options, "clientIP");
 601     if (val && *val)
 602     {
 603         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 604                 c, val);
 605         c->client_IP = xstrdup(val);
 606     }
 607
 608     xfree(c->group);
 609     c->group = 0;
 610     val = ZOOM_options_get(c->options, "group");
 611     if (val && *val)
 612         c->group = xstrdup(val);
 613
 614     xfree(c->user);
 615     c->user = 0;
 616     val = ZOOM_options_get(c->options, "user");
 617     if (val && *val)
 618         c->user = xstrdup(val);
 619
 620     xfree(c->password);
 621     c->password = 0;
 622     val = ZOOM_options_get(c->options, "password");
 623     if (!val)
 624         val = ZOOM_options_get(c->options, "pass");
 625
 626     if (val && *val)
 627         c->password = xstrdup(val);
 628
 629     c->maximum_record_size =
 630         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
 631     c->preferred_message_size =
 632         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
 633
 634     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 635     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 636
 637     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 638
 639     if (!c->async)
 640     {
 641         while (ZOOM_event(1, &c))
 642             ;
 643     }
 644 }
 645
 646 ZOOM_API(ZOOM_query)
 647     ZOOM_query_create(void)
 648 {
 649     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 650
 651     yaz_log(log_details, "%p ZOOM_query_create", s);
 652     s->refcount = 1;
 653     s->z_query = 0;
 654     s->sort_spec = 0;
 655     s->odr = odr_createmem(ODR_ENCODE);
 656     s->query_string = 0;
 657
 658     return s;
 659 }
 660
 661 ZOOM_API(void)
 662     ZOOM_query_destroy(ZOOM_query s)
 663 {
 664     if (!s)
 665         return;
 666
 667     (s->refcount)--;
 668     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 669     if (s->refcount == 0)
 670     {
 671         odr_destroy(s->odr);
 672         xfree(s);
 673     }
 674 }
 675
 676 ZOOM_API(int)
 677     ZOOM_query_prefix(ZOOM_query s, const char *str)
 678 {
 679     s->query_string = odr_strdup(s->odr, str);
 680     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 681     s->z_query->which = Z_Query_type_1;
 682     s->z_query->u.type_1 =  p_query_rpn(s->odr, str);
 683     if (!s->z_query->u.type_1)
 684     {
 685         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 686         s->z_query = 0;
 687         return -1;
 688     }
 689     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 690     return 0;
 691 }
 692
 693 ZOOM_API(int)
 694     ZOOM_query_cql(ZOOM_query s, const char *str)
 695 {
 696     Z_External *ext;
 697
 698     s->query_string = odr_strdup(s->odr, str);
 699
 700     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 701     ext->direct_reference = odr_oiddup(s->odr, yaz_oid_userinfo_cql);
 702     ext->indirect_reference = 0;
 703     ext->descriptor = 0;
 704     ext->which = Z_External_CQL;
 705     ext->u.cql = s->query_string;
 706
 707     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 708     s->z_query->which = Z_Query_type_104;
 709     s->z_query->u.type_104 =  ext;
 710
 711     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 712
 713     return 0;
 714 }
 715
 716 /*
 717  * Translate the CQL string client-side into RPN which is passed to
 718  * the server.  This is useful for server's that don't themselves
 719  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 720  * only as a place to stash diagnostics if compilation fails; if this
 721  * information is not needed, a null pointer may be used.
 722  */
 723 ZOOM_API(int)
 724     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 725 {
 726     char *rpn;
 727     int ret;
 728     ZOOM_connection freeme = 0;
 729
 730     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 731     if (conn == 0)
 732         conn = freeme = ZOOM_connection_create(0);
 733
 734     rpn = cql2pqf(conn, str);
 735     if (freeme != 0)
 736         ZOOM_connection_destroy(freeme);
 737     if (rpn == 0)
 738         return -1;
 739
 740     ret = ZOOM_query_prefix(s, rpn);
 741     xfree(rpn);
 742     return ret;
 743 }
 744
 745 /*
 746  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 747  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 748  * to the server, as the YAZ GFS doesn't know how to handle this.
 749  */
 750 ZOOM_API(int)
 751     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 752                        int *ccl_error, const char **error_string,
 753                        int *error_pos)
 754 {
 755     int ret;
 756     struct ccl_rpn_node *rpn;
 757     CCL_bibset bibset = ccl_qual_mk();
 758
 759     if (config)
 760         ccl_qual_buf(bibset, config);
 761
 762     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 763     if (!rpn)
 764     {
 765         *error_string = ccl_err_msg(*ccl_error);
 766         ret = -1;
 767     }
 768     else
 769     {
 770         WRBUF wr = wrbuf_alloc();
 771         ccl_pquery(wr, rpn);
 772         ccl_rpn_delete(rpn);
 773         ret = ZOOM_query_prefix(s, wrbuf_cstr(wr));
 774         wrbuf_destroy(wr);
 775     }
 776     ccl_qual_rm(&bibset);
 777     return ret;
 778 }
 779
 780 ZOOM_API(int)
 781     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 782 {
 783     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 784     if (!s->sort_spec)
 785     {
 786         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 787                 s, criteria);
 788         return -1;
 789     }
 790     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 791     return 0;
 792 }
 793
 794 static zoom_ret do_write(ZOOM_connection c);
 795
 796 ZOOM_API(void)
 797     ZOOM_connection_destroy(ZOOM_connection c)
 798 {
 799 #if ZOOM_RESULT_LISTS
 800     ZOOM_resultsets list;
 801 #else
 802     ZOOM_resultset r;
 803 #endif
 804     if (!c)
 805         return;
 806     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 807     if (c->cs)
 808         cs_close(c->cs);
 809
 810 #if ZOOM_RESULT_LISTS
 811     // Remove the connection's usage of resultsets
 812     list = c->resultsets;
 813     while (list) {
 814         ZOOM_resultsets removed = list;
 815         ZOOM_resultset_destroy(list->resultset);
 816         list = list->next;
 817         xfree(removed);
 818     }
 819 #else
 820     for (r = c->resultsets; r; r = r->next)
 821         r->connection = 0;
 822 #endif
 823
 824     xfree(c->buf_in);
 825     xfree(c->addinfo);
 826     xfree(c->diagset);
 827     odr_destroy(c->odr_in);
 828     odr_destroy(c->odr_out);
 829     if (c->odr_print)
 830     {
 831         odr_setprint(c->odr_print, 0); /* prevent destroy from fclose'ing */
 832         odr_destroy(c->odr_print);
 833     }
 834     ZOOM_options_destroy(c->options);
 835     ZOOM_connection_remove_tasks(c);
 836     ZOOM_connection_remove_events(c);
 837     xfree(c->host_port);
 838     xfree(c->path);
 839     xfree(c->proxy);
 840     xfree(c->charset);
 841     xfree(c->lang);
 842     xfree(c->cookie_out);
 843     xfree(c->cookie_in);
 844     xfree(c->client_IP);
 845     xfree(c->user);
 846     xfree(c->group);
 847     xfree(c->password);
 848     xfree(c->sru_version);
 849     xfree(c);
 850 }
 851
 852 void ZOOM_resultset_addref(ZOOM_resultset r)
 853 {
 854     if (r)
 855     {
 856         yaz_mutex_enter(r->mutex);
 857         (r->refcount)++;
 858         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 859                 r, r->refcount);
 860         yaz_mutex_leave(r->mutex);
 861     }
 862 }
 863
 864 ZOOM_resultset ZOOM_resultset_create(void)
 865 {
 866     int i;
 867     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 868
 869     initlog();
 870
 871     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 872     r->refcount = 1;
 873     r->size = 0;
 874     r->odr = odr_createmem(ODR_ENCODE);
 875     r->piggyback = 1;
 876     r->setname = 0;
 877     r->schema = 0;
 878     r->step = 0;
 879     for (i = 0; i<RECORD_HASH_SIZE; i++)
 880         r->record_hash[i] = 0;
 881     r->r_sort_spec = 0;
 882     r->query = 0;
 883     r->connection = 0;
 884     r->databaseNames = 0;
 885     r->num_databaseNames = 0;
 886     r->mutex = 0;
 887     yaz_mutex_create(&r->mutex);
 888 #if SHPTR
 889     {
 890         WRBUF w = wrbuf_alloc();
 891         YAZ_SHPTR_INIT(r->record_wrbuf, w);
 892     }
 893 #endif
 894     return r;
 895 }
 896
 897 ZOOM_API(ZOOM_resultset)
 898     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 899 {
 900     ZOOM_resultset r;
 901     ZOOM_query s = ZOOM_query_create();
 902
 903     ZOOM_query_prefix(s, q);
 904
 905     r = ZOOM_connection_search(c, s);
 906     ZOOM_query_destroy(s);
 907     return r;
 908 }
 909
 910 ZOOM_API(ZOOM_resultset)
 911     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 912 {
 913     ZOOM_resultset r = ZOOM_resultset_create();
 914     ZOOM_task task;
 915     const char *cp;
 916     int start, count;
 917     const char *syntax, *elementSetName;
 918 #if ZOOM_RESULT_LISTS
 919     ZOOM_resultsets set;
 920 #endif
 921
 922     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 923     r->r_sort_spec = q->sort_spec;
 924     r->query = q;
 925
 926     r->options = ZOOM_options_create_with_parent(c->options);
 927
 928     start = ZOOM_options_get_int(r->options, "start", 0);
 929     count = ZOOM_options_get_int(r->options, "count", 0);
 930     {
 931         /* If "presentChunk" is defined use that; otherwise "step" */
 932         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 933         r->step = ZOOM_options_get_int(r->options,
 934                                        (cp != 0 ? "presentChunk": "step"), 0);
 935     }
 936     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 937     cp = ZOOM_options_get(r->options, "setname");
 938     if (cp)
 939         r->setname = xstrdup(cp);
 940     cp = ZOOM_options_get(r->options, "schema");
 941     if (cp)
 942         r->schema = xstrdup(cp);
 943
 944     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 945                                          r->odr);
 946
 947     r->connection = c;
 948
 949 #if ZOOM_RESULT_LISTS
 950     yaz_log(log_details, "%p ZOOM_connection_search: Adding new resultset (%p) to resultsets (%p) ", c, r, c->resultsets);
 951     set = xmalloc(sizeof(*set));
 952     ZOOM_resultset_addref(r);
 953     set->resultset = r;
 954     set->next = c->resultsets;
 955     c->resultsets = set;
 956 #else
 957     r->next = c->resultsets;
 958     c->resultsets = r;
 959 #endif
 960     if (c->host_port && c->proto == PROTO_HTTP)
 961     {
 962         if (!c->cs)
 963         {
 964             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 965             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 966         }
 967         else
 968         {
 969             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 970             c->reconnect_ok = 1;
 971         }
 972     }
 973
 974     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 975     task->u.search.resultset = r;
 976     task->u.search.start = start;
 977     task->u.search.count = count;
 978     task->u.search.recv_search_fired = 0;
 979
 980     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 981     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 982     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 983     task->u.search.elementSetName = elementSetName
 984         ? xstrdup(elementSetName) : 0;
 985
 986     ZOOM_resultset_addref(r);
 987
 988     (q->refcount)++;
 989
 990     if (!c->async)
 991     {
 992         while (ZOOM_event(1, &c))
 993             ;
 994     }
 995     return r;
 996 }
 997
 998 ZOOM_API(void)
 999     ZOOM_resultset_sort(ZOOM_resultset r,
1000                          const char *sort_type, const char *sort_spec)
1001 {
1002     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
1003 }
1004
1005 ZOOM_API(int)
1006     ZOOM_resultset_sort1(ZOOM_resultset r,
1007                          const char *sort_type, const char *sort_spec)
1008 {
1009     ZOOM_connection c = r->connection;
1010     ZOOM_task task;
1011     ZOOM_query newq;
1012
1013     newq = ZOOM_query_create();
1014     if (ZOOM_query_sortby(newq, sort_spec) < 0)
1015         return -1;
1016
1017     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
1018             r, r, sort_type, sort_spec);
1019     if (!c)
1020         return 0;
1021
1022     if (c->host_port && c->proto == PROTO_HTTP)
1023     {
1024         if (!c->cs)
1025         {
1026             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
1027             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1028         }
1029         else
1030         {
1031             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
1032                     r);
1033             c->reconnect_ok = 1;
1034         }
1035     }
1036
1037     ZOOM_resultset_cache_reset(r);
1038     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
1039     task->u.sort.resultset = r;
1040     task->u.sort.q = newq;
1041
1042     ZOOM_resultset_addref(r);
1043
1044     if (!c->async)
1045     {
1046         while (ZOOM_event(1, &c))
1047             ;
1048     }
1049
1050     return 0;
1051 }
1052
1053 static void ZOOM_record_release(ZOOM_record rec)
1054 {
1055     if (!rec)
1056         return;
1057
1058 #if SHPTR
1059     if (rec->record_wrbuf)
1060         YAZ_SHPTR_DEC(rec->record_wrbuf, wrbuf_destroy);
1061 #else
1062     if (rec->wrbuf)
1063         wrbuf_destroy(rec->wrbuf);
1064 #endif
1065
1066 #if YAZ_HAVE_XML2
1067     if (rec->xml_mem)
1068         xmlFree(rec->xml_mem);
1069 #endif
1070     if (rec->odr)
1071         odr_destroy(rec->odr);
1072 }
1073
1074 ZOOM_API(void)
1075     ZOOM_resultset_cache_reset(ZOOM_resultset r)
1076 {
1077     int i;
1078     for (i = 0; i<RECORD_HASH_SIZE; i++)
1079     {
1080         ZOOM_record_cache rc;
1081         for (rc = r->record_hash[i]; rc; rc = rc->next)
1082         {
1083             ZOOM_record_release(&rc->rec);
1084         }
1085         r->record_hash[i] = 0;
1086     }
1087 }
1088
1089 ZOOM_API(void)
1090     ZOOM_resultset_destroy(ZOOM_resultset r)
1091 {
1092     resultset_destroy(r);
1093 }
1094
1095 static void resultset_destroy(ZOOM_resultset r)
1096 {
1097     if (!r)
1098         return;
1099     yaz_mutex_enter(r->mutex);
1100     (r->refcount)--;
1101     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
1102             r, r, r->refcount);
1103     if (r->refcount == 0)
1104     {
1105         yaz_mutex_leave(r->mutex);
1106
1107         yaz_log(log_details, "%p ZOOM_connection resultset_destroy: Deleting resultset (%p) ", r->connection, r);
1108         ZOOM_resultset_cache_reset(r);
1109 #if ZOOM_RESULT_LISTS
1110 #else
1111         if (r->connection)
1112         {
1113             /* remove ourselves from the resultsets in connection */
1114             ZOOM_resultset *rp = &r->connection->resultsets;
1115             while (1)
1116             {
1117                 assert(*rp);   /* we must be in this list!! */
1118                 if (*rp == r)
1119                 {   /* OK, we're here - take us out of it */
1120                     *rp = (*rp)->next;
1121                     break;
1122                 }
1123                 rp = &(*rp)->next;
1124             }
1125         }
1126 #endif
1127         ZOOM_query_destroy(r->query);
1128         ZOOM_options_destroy(r->options);
1129         odr_destroy(r->odr);
1130         xfree(r->setname);
1131         xfree(r->schema);
1132         yaz_mutex_destroy(&r->mutex);
1133 #if SHPTR
1134         YAZ_SHPTR_DEC(r->record_wrbuf, wrbuf_destroy);
1135 #endif
1136         xfree(r);
1137     }
1138     else
1139         yaz_mutex_leave(r->mutex);
1140 }
1141
1142 ZOOM_API(size_t)
1143     ZOOM_resultset_size(ZOOM_resultset r)
1144 {
1145     yaz_log(log_details, "ZOOM_resultset_size r=%p count=" ODR_INT_PRINTF,
1146             r, r->size);
1147     return r->size;
1148 }
1149
1150 static void do_close(ZOOM_connection c)
1151 {
1152     if (c->cs)
1153         cs_close(c->cs);
1154     c->cs = 0;
1155     ZOOM_connection_set_mask(c, 0);
1156     c->state = STATE_IDLE;
1157 }
1158
1159 static int ZOOM_test_reconnect(ZOOM_connection c)
1160 {
1161     ZOOM_Event event;
1162
1163     if (!c->reconnect_ok)
1164         return 0;
1165     do_close(c);
1166     c->reconnect_ok = 0;
1167     c->tasks->running = 0;
1168     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
1169
1170     event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1171     ZOOM_connection_put_event(c, event);
1172
1173     return 1;
1174 }
1175
1176 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
1177                                     int force_sync, int start, int count)
1178 {
1179     ZOOM_task task;
1180     ZOOM_connection c;
1181     const char *cp;
1182     const char *syntax, *elementSetName;
1183
1184     if (!r)
1185         return;
1186     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
1187             " count=%d", r, force_sync, start, count);
1188     c = r->connection;
1189     if (!c)
1190         return;
1191
1192     if (c->host_port && c->proto == PROTO_HTTP)
1193     {
1194         if (!c->cs)
1195         {
1196             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
1197             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1198         }
1199         else
1200         {
1201             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1202                     "reconnect", r);
1203             c->reconnect_ok = 1;
1204         }
1205     }
1206     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1207     task->u.retrieve.resultset = r;
1208     task->u.retrieve.start = start;
1209     task->u.retrieve.count = count;
1210
1211     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1212     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1213     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1214     task->u.retrieve.elementSetName = elementSetName
1215         ? xstrdup(elementSetName) : 0;
1216
1217     cp = ZOOM_options_get(r->options, "schema");
1218     if (cp)
1219     {
1220         if (!r->schema || strcmp(r->schema, cp))
1221         {
1222             xfree(r->schema);
1223             r->schema = xstrdup(cp);
1224         }
1225     }
1226
1227     ZOOM_resultset_addref(r);
1228
1229     if (!r->connection->async || force_sync)
1230         while (r->connection && ZOOM_event(1, &r->connection))
1231             ;
1232 }
1233
1234 ZOOM_API(void)
1235     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1236                            size_t start, size_t count)
1237 {
1238     int force_present = 0;
1239
1240     if (!r)
1241         return ;
1242     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1243             r, r, (long) start, (long) count);
1244     if (count && recs)
1245         force_present = 1;
1246     ZOOM_resultset_retrieve(r, force_present, start, count);
1247     if (force_present)
1248     {
1249         size_t i;
1250         for (i = 0; i< count; i++)
1251             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1252     }
1253 }
1254
1255 static void get_cert(ZOOM_connection c)
1256 {
1257     char *cert_buf;
1258     int cert_len;
1259
1260     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1261     {
1262         ZOOM_connection_option_setl(c, "sslPeerCert",
1263                                     cert_buf, cert_len);
1264         xfree(cert_buf);
1265     }
1266 }
1267
1268 static zoom_ret do_connect_host(ZOOM_connection c,
1269                                 const char *effective_host,
1270                                 const char *logical_url);
1271
1272 static zoom_ret do_connect(ZOOM_connection c)
1273 {
1274     const char *effective_host;
1275
1276     if (c->proxy)
1277         effective_host = c->proxy;
1278     else
1279         effective_host = c->host_port;
1280     return do_connect_host(c, effective_host, c->host_port);
1281 }
1282
1283 static zoom_ret do_connect_host(ZOOM_connection c, const char *effective_host,
1284     const char *logical_url)
1285 {
1286     void *add;
1287
1288     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1289
1290     if (c->cs)
1291         cs_close(c->cs);
1292     c->cs = cs_create_host(effective_host, 0, &add);
1293
1294     if (c->cs && c->cs->protocol == PROTO_HTTP)
1295     {
1296 #if YAZ_HAVE_XML2
1297         if (logical_url)
1298         {
1299             const char *db = 0;
1300
1301             c->proto = PROTO_HTTP;
1302             cs_get_host_args(logical_url, &db);
1303             xfree(c->path);
1304
1305             c->path = xmalloc(strlen(db) * 3 + 2);
1306             yaz_encode_sru_dbpath_buf(c->path, db);
1307         }
1308 #else
1309         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1310         do_close(c);
1311         return zoom_complete;
1312 #endif
1313     }
1314     if (c->cs)
1315     {
1316         int ret = cs_connect(c->cs, add);
1317         if (ret == 0)
1318         {
1319             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1320             ZOOM_connection_put_event(c, event);
1321             get_cert(c);
1322             if (c->proto == PROTO_Z3950)
1323                 ZOOM_connection_send_init(c);
1324             else
1325             {
1326                 /* no init request for SRW .. */
1327                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1328                 ZOOM_connection_remove_task(c);
1329                 ZOOM_connection_set_mask(c, 0);
1330                 ZOOM_connection_exec_task(c);
1331             }
1332             c->state = STATE_ESTABLISHED;
1333             return zoom_pending;
1334         }
1335         else if (ret > 0)
1336         {
1337             int mask = ZOOM_SELECT_EXCEPT;
1338             if (c->cs->io_pending & CS_WANT_WRITE)
1339                 mask += ZOOM_SELECT_WRITE;
1340             if (c->cs->io_pending & CS_WANT_READ)
1341                 mask += ZOOM_SELECT_READ;
1342             ZOOM_connection_set_mask(c, mask);
1343             c->state = STATE_CONNECTING;
1344             return zoom_pending;
1345         }
1346     }
1347     c->state = STATE_IDLE;
1348     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, logical_url);
1349     return zoom_complete;
1350 }
1351
1352 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1353 {
1354     int i;
1355     for (i = 0; i<200; i++)
1356     {
1357         size_t len;
1358         Odr_oid *oid;
1359         Z_OtherInformation **oi;
1360         char buf[80];
1361         const char *val;
1362         const char *cp;
1363
1364         sprintf(buf, "otherInfo%d", i);
1365         val = ZOOM_options_get(c->options, buf);
1366         if (!val)
1367             break;
1368         cp = strchr(val, ':');
1369         if (!cp)
1370             continue;
1371         len = cp - val;
1372         if (len >= sizeof(buf))
1373             len = sizeof(buf)-1;
1374         memcpy(buf, val, len);
1375         buf[len] = '\0';
1376
1377         oid = yaz_string_to_oid_odr(yaz_oid_std(), CLASS_USERINFO,
1378                                     buf, out);
1379         if (!oid)
1380             continue;
1381
1382         yaz_oi_APDU(a, &oi);
1383         yaz_oi_set_string_oid(oi, out, oid, 1, cp+1);
1384     }
1385 }
1386
1387 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1388 {
1389     assert(a);
1390     if (c->cookie_out)
1391     {
1392         Z_OtherInformation **oi;
1393         yaz_oi_APDU(a, &oi);
1394         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_cookie,
1395                               1, c->cookie_out);
1396     }
1397     if (c->client_IP)
1398     {
1399         Z_OtherInformation **oi;
1400         yaz_oi_APDU(a, &oi);
1401         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_client_ip,
1402                               1, c->client_IP);
1403     }
1404     otherInfo_attach(c, a, out);
1405     if (!z_APDU(out, &a, 0, 0))
1406     {
1407         FILE *outf = fopen("/tmp/apdu.txt", "a");
1408         if (a && outf)
1409         {
1410             ODR odr_pr = odr_createmem(ODR_PRINT);
1411             fprintf(outf, "a=%p\n", a);
1412             odr_setprint(odr_pr, outf);
1413             z_APDU(odr_pr, &a, 0, 0);
1414             odr_destroy(odr_pr);
1415         }
1416         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1417         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1418         odr_reset(out);
1419         return -1;
1420     }
1421     if (c->odr_print)
1422         z_APDU(c->odr_print, &a, 0, 0);
1423     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1424     return 0;
1425 }
1426
1427 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1428 {
1429     ZOOM_Event event;
1430     assert(a);
1431     if (encode_APDU(c, a, c->odr_out))
1432         return zoom_complete;
1433     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1434     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1435     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1436     ZOOM_connection_put_event(c, event);
1437     odr_reset(c->odr_out);
1438     return do_write(c);
1439 }
1440
1441 /* returns 1 if PDU was sent OK (still pending )
1442    0 if PDU was not sent OK (nothing to wait for)
1443 */
1444
1445 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1446 {
1447     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1448     Z_InitRequest *ireq = apdu->u.initRequest;
1449     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1450         odr_malloc(c->odr_out, sizeof(*auth));
1451
1452     ODR_MASK_SET(ireq->options, Z_Options_search);
1453     ODR_MASK_SET(ireq->options, Z_Options_present);
1454     ODR_MASK_SET(ireq->options, Z_Options_scan);
1455     ODR_MASK_SET(ireq->options, Z_Options_sort);
1456     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1457     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1458
1459     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1460     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1461     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1462
1463     ireq->implementationId =
1464         odr_prepend(c->odr_out,
1465                     ZOOM_options_get(c->options, "implementationId"),
1466                     ireq->implementationId);
1467
1468     ireq->implementationName =
1469         odr_prepend(c->odr_out,
1470                     ZOOM_options_get(c->options, "implementationName"),
1471                     odr_prepend(c->odr_out, "ZOOM-C",
1472                                 ireq->implementationName));
1473
1474     ireq->implementationVersion =
1475         odr_prepend(c->odr_out,
1476                     ZOOM_options_get(c->options, "implementationVersion"),
1477                                 ireq->implementationVersion);
1478
1479     *ireq->maximumRecordSize = c->maximum_record_size;
1480     *ireq->preferredMessageSize = c->preferred_message_size;
1481
1482     if (c->group || c->password)
1483     {
1484         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1485         pass->groupId = odr_strdup_null(c->odr_out, c->group);
1486         pass->userId = odr_strdup_null(c->odr_out, c->user);
1487         pass->password = odr_strdup_null(c->odr_out, c->password);
1488         auth->which = Z_IdAuthentication_idPass;
1489         auth->u.idPass = pass;
1490         ireq->idAuthentication = auth;
1491     }
1492     else if (c->user)
1493     {
1494         auth->which = Z_IdAuthentication_open;
1495         auth->u.open = odr_strdup(c->odr_out, c->user);
1496         ireq->idAuthentication = auth;
1497     }
1498     if (c->proxy)
1499     {
1500         yaz_oi_set_string_oid(&ireq->otherInfo, c->odr_out,
1501                               yaz_oid_userinfo_proxy, 1, c->host_port);
1502     }
1503     if (c->charset || c->lang)
1504     {
1505         Z_OtherInformation **oi;
1506         Z_OtherInformationUnit *oi_unit;
1507
1508         yaz_oi_APDU(apdu, &oi);
1509
1510         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1511         {
1512             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1513             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1514             oi_unit->information.externallyDefinedInfo =
1515                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1516                                               c->charset, c->lang, 1);
1517         }
1518     }
1519     assert(apdu);
1520     return send_APDU(c, apdu);
1521 }
1522
1523 #if YAZ_HAVE_XML2
1524 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1525 {
1526     Z_GDU *gdu;
1527     ZOOM_Event event;
1528     const char *database =  ZOOM_options_get(c->options, "databaseName");
1529     char *fdatabase = 0;
1530
1531     if (database)
1532         fdatabase = yaz_encode_sru_dbpath_odr(c->odr_out, database);
1533     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port,
1534                                        fdatabase ? fdatabase : c->path);
1535
1536     if (c->sru_mode == zoom_sru_get)
1537     {
1538         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1539     }
1540     else if (c->sru_mode == zoom_sru_post)
1541     {
1542         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1543     }
1544     else if (c->sru_mode == zoom_sru_soap)
1545     {
1546         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1547     }
1548     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1549         return zoom_complete;
1550     if (c->odr_print)
1551         z_GDU(c->odr_print, &gdu, 0, 0);
1552     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1553
1554     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1555     ZOOM_connection_put_event(c, event);
1556     odr_reset(c->odr_out);
1557     return do_write(c);
1558 }
1559 #endif
1560
1561 #if YAZ_HAVE_XML2
1562 static Z_SRW_PDU *ZOOM_srw_get_pdu(ZOOM_connection c, int type)
1563 {
1564     Z_SRW_PDU *sr = yaz_srw_get_pdu(c->odr_out, type, c->sru_version);
1565     sr->username = c->user;
1566     sr->password = c->password;
1567     return sr;
1568 }
1569 #endif
1570
1571 #if YAZ_HAVE_XML2
1572 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1573 {
1574     int i;
1575     int *start, *count;
1576     ZOOM_resultset resultset = 0;
1577     Z_SRW_PDU *sr = 0;
1578     const char *option_val = 0;
1579
1580     if (c->error)                  /* don't continue on error */
1581         return zoom_complete;
1582     assert(c->tasks);
1583     switch(c->tasks->which)
1584     {
1585     case ZOOM_TASK_SEARCH:
1586         resultset = c->tasks->u.search.resultset;
1587         if (!resultset->setname)
1588             resultset->setname = xstrdup("default");
1589         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1590         start = &c->tasks->u.search.start;
1591         count = &c->tasks->u.search.count;
1592         break;
1593     case ZOOM_TASK_RETRIEVE:
1594         resultset = c->tasks->u.retrieve.resultset;
1595
1596         start = &c->tasks->u.retrieve.start;
1597         count = &c->tasks->u.retrieve.count;
1598
1599         if (*start >= resultset->size)
1600             return zoom_complete;
1601         if (*start + *count > resultset->size)
1602             *count = resultset->size - *start;
1603
1604         for (i = 0; i < *count; i++)
1605         {
1606             ZOOM_record rec =
1607                 record_cache_lookup(resultset, i + *start,
1608                                     c->tasks->u.retrieve.syntax,
1609                                     c->tasks->u.retrieve.elementSetName);
1610             if (!rec)
1611                 break;
1612             else
1613             {
1614                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1615                 ZOOM_connection_put_event(c, event);
1616             }
1617         }
1618         *start += i;
1619         *count -= i;
1620
1621         if (*count == 0)
1622             return zoom_complete;
1623         break;
1624     default:
1625         return zoom_complete;
1626     }
1627     assert(resultset->query);
1628
1629     sr = ZOOM_srw_get_pdu(c, Z_SRW_searchRetrieve_request);
1630     if (resultset->query->z_query->which == Z_Query_type_104
1631         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1632     {
1633         sr->u.request->query_type = Z_SRW_query_type_cql;
1634         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1635     }
1636     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1637              resultset->query->z_query->u.type_1)
1638     {
1639         sr->u.request->query_type = Z_SRW_query_type_pqf;
1640         sr->u.request->query.pqf = resultset->query->query_string;
1641     }
1642     else
1643     {
1644         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1645         return zoom_complete;
1646     }
1647     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1648     sr->u.request->maximumRecords = odr_intdup(
1649         c->odr_out, (resultset->step > 0 && resultset->step < *count) ?
1650         resultset->step : *count);
1651     sr->u.request->recordSchema = resultset->schema;
1652
1653     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1654     if (option_val)
1655         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1656
1657     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1658     yaz_encode_sru_extra(sr, c->odr_out, option_val);
1659     return send_srw(c, sr);
1660 }
1661 #else
1662 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1663 {
1664     return zoom_complete;
1665 }
1666 #endif
1667
1668 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1669 {
1670     ZOOM_resultset r;
1671     int lslb, ssub, mspn;
1672     const char *syntax;
1673     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1674     Z_SearchRequest *search_req = apdu->u.searchRequest;
1675     const char *elementSetName;
1676     const char *smallSetElementSetName;
1677     const char *mediumSetElementSetName;
1678
1679     assert(c->tasks);
1680     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1681
1682     r = c->tasks->u.search.resultset;
1683
1684     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1685
1686     elementSetName =
1687         ZOOM_options_get(r->options, "elementSetName");
1688     smallSetElementSetName  =
1689         ZOOM_options_get(r->options, "smallSetElementSetName");
1690     mediumSetElementSetName =
1691         ZOOM_options_get(r->options, "mediumSetElementSetName");
1692
1693     if (!smallSetElementSetName)
1694         smallSetElementSetName = elementSetName;
1695
1696     if (!mediumSetElementSetName)
1697         mediumSetElementSetName = elementSetName;
1698
1699     assert(r);
1700     assert(r->query);
1701
1702     /* prepare query for the search request */
1703     search_req->query = r->query->z_query;
1704     if (!search_req->query)
1705     {
1706         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1707         return zoom_complete;
1708     }
1709     if (r->query->z_query->which == Z_Query_type_1 ||
1710         r->query->z_query->which == Z_Query_type_101)
1711     {
1712         const char *cp = ZOOM_options_get(r->options, "rpnCharset");
1713         if (cp)
1714         {
1715             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
1716             if (cd)
1717             {
1718                 int r;
1719                 search_req->query = yaz_copy_Z_Query(search_req->query,
1720                                                      c->odr_out);
1721
1722                 r = yaz_query_charset_convert_rpnquery_check(
1723                     search_req->query->u.type_1,
1724                     c->odr_out, cd);
1725                 yaz_iconv_close(cd);
1726                 if (r)
1727                 {  /* query could not be char converted */
1728                     set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1729                     return zoom_complete;
1730                 }
1731             }
1732         }
1733     }
1734     search_req->databaseNames = r->databaseNames;
1735     search_req->num_databaseNames = r->num_databaseNames;
1736
1737     /* get syntax (no need to provide unless piggyback is in effect) */
1738     syntax = c->tasks->u.search.syntax;
1739
1740     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1741     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1742     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1743     if (lslb != -1 && ssub != -1 && mspn != -1)
1744     {
1745         /* So're a Z39.50 expert? Let's hope you don't do sort */
1746         *search_req->largeSetLowerBound = lslb;
1747         *search_req->smallSetUpperBound = ssub;
1748         *search_req->mediumSetPresentNumber = mspn;
1749     }
1750     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1751              && r->piggyback && !r->r_sort_spec && !r->schema)
1752     {
1753         /* Regular piggyback - do it unless we're going to do sort */
1754         *search_req->largeSetLowerBound = 2000000000;
1755         *search_req->smallSetUpperBound = 1;
1756         *search_req->mediumSetPresentNumber =
1757             r->step>0 ? r->step : c->tasks->u.search.count;
1758     }
1759     else
1760     {
1761         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1762         smallSetElementSetName = 0;
1763         mediumSetElementSetName = 0;
1764         syntax = 0;
1765     }
1766     if (smallSetElementSetName && *smallSetElementSetName)
1767     {
1768         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1769             odr_malloc(c->odr_out, sizeof(*esn));
1770
1771         esn->which = Z_ElementSetNames_generic;
1772         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1773         search_req->smallSetElementSetNames = esn;
1774     }
1775     if (mediumSetElementSetName && *mediumSetElementSetName)
1776     {
1777         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1778             odr_malloc(c->odr_out, sizeof(*esn));
1779
1780         esn->which = Z_ElementSetNames_generic;
1781         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1782         search_req->mediumSetElementSetNames = esn;
1783     }
1784     if (syntax)
1785         search_req->preferredRecordSyntax =
1786             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1787
1788     if (!r->setname)
1789     {
1790         if (c->support_named_resultsets)
1791         {
1792             char setname[14];
1793             int ord;
1794             /* find the lowest unused ordinal so that we re-use
1795                result sets on the server. */
1796             for (ord = 1; ; ord++)
1797             {
1798 #if ZOOM_RESULT_LISTS
1799                 ZOOM_resultsets rsp;
1800                 sprintf(setname, "%d", ord);
1801                 for (rsp = c->resultsets; rsp; rsp = rsp->next)
1802                     if (rsp->resultset->setname && !strcmp(rsp->resultset->setname, setname))
1803                         break;
1804                 if (!rsp)
1805                     break;
1806 #else
1807                 ZOOM_resultset rp;
1808                 sprintf(setname, "%d", ord);
1809                 for (rp = c->resultsets; rp; rp = rp->next)
1810                     if (rp->setname && !strcmp(rp->setname, setname))
1811                         break;
1812                 if (!rp)
1813                     break;
1814 #endif
1815
1816             }
1817             r->setname = xstrdup(setname);
1818             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1819                     "set %s", c, r->setname);
1820         }
1821         else
1822         {
1823             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1824                     "default set", c);
1825             r->setname = xstrdup("default");
1826         }
1827         ZOOM_options_set(r->options, "setname", r->setname);
1828     }
1829     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1830     return send_APDU(c, apdu);
1831 }
1832
1833 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1834 {
1835     char oid_name_buf[OID_STR_MAX];
1836     const char *oid_name;
1837     char *addinfo = 0;
1838
1839     oid_name = yaz_oid_to_string_buf(r->diagnosticSetId, 0, oid_name_buf);
1840     switch (r->which)
1841     {
1842     case Z_DefaultDiagFormat_v2Addinfo:
1843         addinfo = r->u.v2Addinfo;
1844         break;
1845     case Z_DefaultDiagFormat_v3Addinfo:
1846         addinfo = r->u.v3Addinfo;
1847         break;
1848     }
1849     xfree(c->addinfo);
1850     c->addinfo = 0;
1851     set_dset_error(c, *r->condition, oid_name, addinfo, 0);
1852 }
1853
1854 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1855 {
1856     if (p->which != Z_DiagRec_defaultFormat)
1857         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1858     else
1859         response_default_diag(c, p->u.defaultFormat);
1860 }
1861
1862 ZOOM_API(ZOOM_record)
1863     ZOOM_record_clone(ZOOM_record srec)
1864 {
1865     char *buf;
1866     int size;
1867     ODR odr_enc;
1868     ZOOM_record nrec;
1869
1870     odr_enc = odr_createmem(ODR_ENCODE);
1871     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1872         return 0;
1873     buf = odr_getbuf(odr_enc, &size, 0);
1874
1875     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1876     nrec->odr = odr_createmem(ODR_DECODE);
1877 #if SHPTR
1878     nrec->record_wrbuf = 0;
1879 #else
1880     nrec->wrbuf = 0;
1881 #endif
1882 #if YAZ_HAVE_XML2
1883     nrec->xml_mem = 0;
1884     nrec->xml_size = 0;
1885 #endif
1886     odr_setbuf(nrec->odr, buf, size, 0);
1887     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1888
1889     nrec->schema = odr_strdup_null(nrec->odr, srec->schema);
1890     nrec->diag_uri = odr_strdup_null(nrec->odr, srec->diag_uri);
1891     nrec->diag_message = odr_strdup_null(nrec->odr, srec->diag_message);
1892     nrec->diag_details = odr_strdup_null(nrec->odr, srec->diag_details);
1893     nrec->diag_set = odr_strdup_null(nrec->odr, srec->diag_set);
1894     odr_destroy(odr_enc);
1895     return nrec;
1896 }
1897
1898 ZOOM_API(ZOOM_record)
1899     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1900 {
1901     const char *syntax =
1902         ZOOM_options_get(s->options, "preferredRecordSyntax");
1903     const char *elementSetName =
1904         ZOOM_options_get(s->options, "elementSetName");
1905
1906     return record_cache_lookup(s, pos, syntax, elementSetName);
1907 }
1908
1909 ZOOM_API(ZOOM_record)
1910     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1911 {
1912     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1913
1914     if (!rec)
1915     {
1916         /*
1917          * MIKE: I think force_sync should always be zero, but I don't
1918          * want to make this change until I get the go-ahead from
1919          * Adam, in case something depends on the old synchronous
1920          * behaviour.
1921          */
1922         int force_sync = 1;
1923         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1924         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1925         rec = ZOOM_resultset_record_immediate(r, pos);
1926     }
1927     return rec;
1928 }
1929
1930 ZOOM_API(void)
1931     ZOOM_record_destroy(ZOOM_record rec)
1932 {
1933     ZOOM_record_release(rec);
1934     xfree(rec);
1935 }
1936
1937
1938 static yaz_iconv_t iconv_create_charset(const char *record_charset)
1939 {
1940     char to[40];
1941     char from[40];
1942     yaz_iconv_t cd = 0;
1943
1944     *from = '\0';
1945     strcpy(to, "UTF-8");
1946     if (record_charset && *record_charset)
1947     {
1948         /* Use "from,to" or just "from" */
1949         const char *cp = strchr(record_charset, ',');
1950         size_t clen = strlen(record_charset);
1951         if (cp && cp[1])
1952         {
1953             strncpy( to, cp+1, sizeof(to)-1);
1954             to[sizeof(to)-1] = '\0';
1955             clen = cp - record_charset;
1956         }
1957         if (clen > sizeof(from)-1)
1958             clen = sizeof(from)-1;
1959
1960         if (clen)
1961             strncpy(from, record_charset, clen);
1962         from[clen] = '\0';
1963     }
1964     if (*from && *to)
1965         cd = yaz_iconv_open(to, from);
1966     return cd;
1967 }
1968
1969 static const char *return_marc_record(ZOOM_record rec, WRBUF wrbuf,
1970                                       int marc_type,
1971                                       int *len,
1972                                       const char *buf, int sz,
1973                                       const char *record_charset)
1974 {
1975     yaz_iconv_t cd = iconv_create_charset(record_charset);
1976     yaz_marc_t mt = yaz_marc_create();
1977     const char *ret_string = 0;
1978
1979     if (cd)
1980         yaz_marc_iconv(mt, cd);
1981     yaz_marc_xml(mt, marc_type);
1982     if (yaz_marc_decode_wrbuf(mt, buf, sz, wrbuf) > 0)
1983     {
1984         if (len)
1985             *len = wrbuf_len(wrbuf);
1986         ret_string = wrbuf_cstr(wrbuf);
1987     }
1988     yaz_marc_destroy(mt);
1989     if (cd)
1990         yaz_iconv_close(cd);
1991     return ret_string;
1992 }
1993
1994 static const char *return_opac_record(ZOOM_record rec, WRBUF wrbuf,
1995                                       int marc_type,
1996                                       int *len,
1997                                       Z_OPACRecord *opac_rec,
1998                                       const char *record_charset)
1999 {
2000     yaz_iconv_t cd = iconv_create_charset(record_charset);
2001     yaz_marc_t mt = yaz_marc_create();
2002
2003     if (cd)
2004         yaz_marc_iconv(mt, cd);
2005     yaz_marc_xml(mt, marc_type);
2006
2007     yaz_opac_decode_wrbuf(mt, opac_rec, wrbuf);
2008     yaz_marc_destroy(mt);
2009
2010     if (cd)
2011         yaz_iconv_close(cd);
2012     if (len)
2013         *len = wrbuf_len(wrbuf);
2014     return wrbuf_cstr(wrbuf);
2015 }
2016
2017 static const char *return_string_record(ZOOM_record rec, WRBUF wrbuf,
2018                                         int *len,
2019                                         const char *buf, int sz,
2020                                         const char *record_charset)
2021 {
2022     yaz_iconv_t cd = iconv_create_charset(record_charset);
2023
2024     if (cd)
2025     {
2026         wrbuf_iconv_write(wrbuf, cd, buf, sz);
2027         wrbuf_iconv_reset(wrbuf, cd);
2028
2029         buf = wrbuf_cstr(wrbuf);
2030         sz = wrbuf_len(wrbuf);
2031         yaz_iconv_close(cd);
2032     }
2033     if (len)
2034         *len = sz;
2035     return buf;
2036 }
2037
2038 static const char *return_record(ZOOM_record rec, int *len,
2039                                  Z_NamePlusRecord *npr,
2040                                  int marctype, const char *charset)
2041 {
2042     Z_External *r = (Z_External *) npr->u.databaseRecord;
2043     const Odr_oid *oid = r->direct_reference;
2044     WRBUF wrbuf;
2045
2046 #if SHPTR
2047     if (!rec->record_wrbuf)
2048     {
2049         WRBUF w = wrbuf_alloc();
2050         YAZ_SHPTR_INIT(rec->record_wrbuf, w);
2051     }
2052     wrbuf = rec->record_wrbuf->ptr;
2053 #else
2054     if (!rec->wrbuf)
2055         rec->wrbuf = wrbuf_alloc();
2056     wrbuf = rec->wrbuf;
2057 #endif
2058     wrbuf_rewind(wrbuf);
2059     /* render bibliographic record .. */
2060     if (r->which == Z_External_OPAC)
2061     {
2062         return return_opac_record(rec, wrbuf, marctype, len,
2063                                   r->u.opac, charset);
2064     }
2065     if (r->which == Z_External_sutrs)
2066         return return_string_record(rec, wrbuf, len,
2067                                     (char*) r->u.sutrs->buf,
2068                                     r->u.sutrs->len,
2069                                     charset);
2070     else if (r->which == Z_External_octet)
2071     {
2072         if (yaz_oid_is_iso2709(oid))
2073         {
2074             const char *ret_buf = return_marc_record(
2075                 rec, wrbuf, marctype, len,
2076                 (const char *) r->u.octet_aligned->buf,
2077                 r->u.octet_aligned->len,
2078                 charset);
2079             if (ret_buf)
2080                 return ret_buf;
2081             /* bad ISO2709. Return fail unless raw (ISO2709) is wanted */
2082             if (marctype != YAZ_MARC_ISO2709)
2083                 return 0;
2084         }
2085         return return_string_record(rec, wrbuf, len,
2086                                     (const char *) r->u.octet_aligned->buf,
2087                                     r->u.octet_aligned->len,
2088                                     charset);
2089     }
2090     else if (r->which == Z_External_grs1)
2091     {
2092         yaz_display_grs1(wrbuf, r->u.grs1, 0);
2093         return return_string_record(rec, wrbuf, len,
2094                                     wrbuf_buf(wrbuf),
2095                                     wrbuf_len(wrbuf),
2096                                     charset);
2097     }
2098     return 0;
2099 }
2100
2101
2102 ZOOM_API(int)
2103     ZOOM_record_error(ZOOM_record rec, const char **cp,
2104                       const char **addinfo, const char **diagset)
2105 {
2106     Z_NamePlusRecord *npr;
2107
2108     if (!rec)
2109         return 0;
2110
2111     npr = rec->npr;
2112     if (rec->diag_uri)
2113     {
2114         if (cp)
2115             *cp = rec->diag_message;
2116         if (addinfo)
2117             *addinfo = rec->diag_details;
2118         if (diagset)
2119             *diagset = rec->diag_set;
2120         return uri_to_code(rec->diag_uri);
2121     }
2122     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
2123     {
2124         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
2125         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
2126         const char *add = 0;
2127
2128         if (diag_rec->which == Z_DiagRec_defaultFormat)
2129         {
2130             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
2131             oid_class oclass;
2132
2133             error = *ddf->condition;
2134             switch (ddf->which)
2135             {
2136             case Z_DefaultDiagFormat_v2Addinfo:
2137                 add = ddf->u.v2Addinfo;
2138                 break;
2139             case Z_DefaultDiagFormat_v3Addinfo:
2140                 add = ddf->u.v3Addinfo;
2141                 break;
2142             }
2143             if (diagset)
2144                 *diagset =
2145                     yaz_oid_to_string(yaz_oid_std(),
2146                                       ddf->diagnosticSetId, &oclass);
2147         }
2148         else
2149         {
2150             if (diagset)
2151                 *diagset = "Bib-1";
2152         }
2153         if (addinfo)
2154             *addinfo = add ? add : "";
2155         if (cp)
2156             *cp = diagbib1_str(error);
2157         return error;
2158     }
2159     return 0;
2160 }
2161
2162 static const char *get_record_format(ZOOM_record rec, int *len,
2163                                      Z_NamePlusRecord *npr,
2164                                      int marctype, const char *charset,
2165                                      const char *format)
2166 {
2167     const char *res = return_record(rec, len, npr, marctype, charset);
2168 #if YAZ_HAVE_XML2
2169     if (*format == '1' && len)
2170     {
2171         /* try to XML format res */
2172         xmlDocPtr doc;
2173         xmlKeepBlanksDefault(0); /* get get xmlDocFormatMemory to work! */
2174         doc = xmlParseMemory(res, *len);
2175         if (doc)
2176         {
2177             if (rec->xml_mem)
2178                 xmlFree(rec->xml_mem);
2179             xmlDocDumpFormatMemory(doc, &rec->xml_mem, &rec->xml_size, 1);
2180             xmlFreeDoc(doc);
2181             res = (char *) rec->xml_mem;
2182             *len = rec->xml_size;
2183         }
2184     }
2185 #endif
2186     return res;
2187 }
2188
2189
2190 ZOOM_API(const char *)
2191     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
2192 {
2193     char type[40];
2194     char charset[40];
2195     char format[3];
2196     const char *cp;
2197     size_t i;
2198     Z_NamePlusRecord *npr;
2199
2200     if (len)
2201         *len = 0; /* default return */
2202
2203     if (!rec)
2204         return 0;
2205     npr = rec->npr;
2206     if (!npr)
2207         return 0;
2208
2209     cp = type_spec;
2210     for (i = 0; cp[i] && cp[i] != ';' && cp[i] != ' ' && i < sizeof(type)-1;
2211          i++)
2212         type[i] = cp[i];
2213     type[i] = '\0';
2214     charset[0] = '\0';
2215     format[0] = '\0';
2216     while (1)
2217     {
2218         while (cp[i] == ' ')
2219             i++;
2220         if (cp[i] != ';')
2221             break;
2222         i++;
2223         while (cp[i] == ' ')
2224             i++;
2225         if (!strncmp(cp + i, "charset=", 8))
2226         {
2227             size_t j = 0;
2228             i = i + 8; /* skip charset= */
2229             for (j = 0; cp[i] && cp[i] != ';' && cp[i] != ' '; i++)
2230             {
2231                 if (j < sizeof(charset)-1)
2232                     charset[j++] = cp[i];
2233             }
2234             charset[j] = '\0';
2235         }
2236         else if (!strncmp(cp + i, "format=", 7))
2237         {
2238             size_t j = 0;
2239             i = i + 7;
2240             for (j = 0; cp[i] && cp[i] != ';' && cp[i] != ' '; i++)
2241             {
2242                 if (j < sizeof(format)-1)
2243                     format[j++] = cp[i];
2244             }
2245             format[j] = '\0';
2246         }
2247     }
2248     if (!strcmp(type, "database"))
2249     {
2250         if (len)
2251             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
2252         return npr->databaseName;
2253     }
2254     else if (!strcmp(type, "schema"))
2255     {
2256         if (len)
2257             *len = rec->schema ? strlen(rec->schema) : 0;
2258         return rec->schema;
2259     }
2260     else if (!strcmp(type, "syntax"))
2261     {
2262         const char *desc = 0;
2263         if (npr->which == Z_NamePlusRecord_databaseRecord)
2264         {
2265             Z_External *r = (Z_External *) npr->u.databaseRecord;
2266             desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
2267         }
2268         if (!desc)
2269             desc = "none";
2270         if (len)
2271             *len = strlen(desc);
2272         return desc;
2273     }
2274     if (npr->which != Z_NamePlusRecord_databaseRecord)
2275         return 0;
2276
2277     /* from now on - we have a database record .. */
2278     if (!strcmp(type, "render"))
2279     {
2280         return get_record_format(rec, len, npr, YAZ_MARC_LINE, charset, format);
2281     }
2282     else if (!strcmp(type, "xml"))
2283     {
2284         return get_record_format(rec, len, npr, YAZ_MARC_MARCXML, charset,
2285                                  format);
2286     }
2287     else if (!strcmp(type, "txml"))
2288     {
2289         return get_record_format(rec, len, npr, YAZ_MARC_TURBOMARC, charset,
2290                                  format);
2291     }
2292     else if (!strcmp(type, "raw"))
2293     {
2294         return get_record_format(rec, len, npr, YAZ_MARC_ISO2709, charset,
2295             format);
2296     }
2297     else if (!strcmp(type, "ext"))
2298     {
2299         if (len) *len = -1;
2300         return (const char *) npr->u.databaseRecord;
2301     }
2302     else if (!strcmp(type, "opac"))
2303     {
2304         if (npr->u.databaseRecord->which == Z_External_OPAC)
2305             return get_record_format(rec, len, npr, YAZ_MARC_MARCXML, charset,
2306                 format);
2307     }
2308     return 0;
2309 }
2310
2311 static int strcmp_null(const char *v1, const char *v2)
2312 {
2313     if (!v1 && !v2)
2314         return 0;
2315     if (!v1 || !v2)
2316         return -1;
2317     return strcmp(v1, v2);
2318 }
2319
2320 static size_t record_hash(int pos)
2321 {
2322     if (pos < 0)
2323         pos = 0;
2324     return pos % RECORD_HASH_SIZE;
2325 }
2326
2327 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2328                              int pos,
2329                              const char *syntax, const char *elementSetName,
2330                              const char *schema,
2331                              Z_SRW_diagnostic *diag)
2332 {
2333     ZOOM_record_cache rc = 0;
2334
2335     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2336     ZOOM_connection_put_event(r->connection, event);
2337
2338     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2339     {
2340         if (pos == rc->pos
2341             && strcmp_null(r->schema, rc->schema) == 0
2342             && strcmp_null(elementSetName,rc->elementSetName) == 0
2343             && strcmp_null(syntax, rc->syntax) == 0)
2344             break;
2345     }
2346     if (!rc)
2347     {
2348         rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2349         rc->rec.odr = 0;
2350 #if SHPTR
2351         YAZ_SHPTR_INC(r->record_wrbuf);
2352         rc->rec.record_wrbuf = r->record_wrbuf;
2353 #else
2354         rc->rec.wrbuf = 0;
2355 #endif
2356 #if YAZ_HAVE_XML2
2357         rc->rec.xml_mem = 0;
2358 #endif
2359         rc->elementSetName = odr_strdup_null(r->odr, elementSetName);
2360
2361         rc->syntax = odr_strdup_null(r->odr, syntax);
2362
2363         rc->schema = odr_strdup_null(r->odr, r->schema);
2364
2365         rc->pos = pos;
2366         rc->next = r->record_hash[record_hash(pos)];
2367         r->record_hash[record_hash(pos)] = rc;
2368     }
2369     rc->rec.npr = npr;
2370     rc->rec.schema = odr_strdup_null(r->odr, schema);
2371     rc->rec.diag_set = 0;
2372     rc->rec.diag_uri = 0;
2373     rc->rec.diag_message = 0;
2374     rc->rec.diag_details = 0;
2375     if (diag)
2376     {
2377         if (diag->uri)
2378         {
2379             char *cp;
2380             rc->rec.diag_set = odr_strdup(r->odr, diag->uri);
2381             if ((cp = strrchr(rc->rec.diag_set, '/')))
2382                 *cp = '\0';
2383             rc->rec.diag_uri = odr_strdup(r->odr, diag->uri);
2384         }
2385         rc->rec.diag_message = odr_strdup_null(r->odr, diag->message);
2386         rc->rec.diag_details = odr_strdup_null(r->odr, diag->details);
2387     }
2388 }
2389
2390 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2391                                        const char *syntax,
2392                                        const char *elementSetName)
2393 {
2394     ZOOM_record_cache rc;
2395
2396     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2397     {
2398         if (pos == rc->pos)
2399         {
2400             if (strcmp_null(r->schema, rc->schema))
2401                 continue;
2402             if (strcmp_null(elementSetName,rc->elementSetName))
2403                 continue;
2404             if (strcmp_null(syntax, rc->syntax))
2405                 continue;
2406             return &rc->rec;
2407         }
2408     }
2409     return 0;
2410 }
2411
2412 static void handle_records(ZOOM_connection c, Z_Records *sr,
2413                            int present_phase)
2414 {
2415     ZOOM_resultset resultset;
2416     int *start, *count;
2417     const char *syntax = 0, *elementSetName = 0;
2418
2419     if (!c->tasks)
2420         return ;
2421     switch (c->tasks->which)
2422     {
2423     case ZOOM_TASK_SEARCH:
2424         resultset = c->tasks->u.search.resultset;
2425         start = &c->tasks->u.search.start;
2426         count = &c->tasks->u.search.count;
2427         syntax = c->tasks->u.search.syntax;
2428         elementSetName = c->tasks->u.search.elementSetName;
2429         break;
2430     case ZOOM_TASK_RETRIEVE:
2431         resultset = c->tasks->u.retrieve.resultset;
2432         start = &c->tasks->u.retrieve.start;
2433         count = &c->tasks->u.retrieve.count;
2434         syntax = c->tasks->u.retrieve.syntax;
2435         elementSetName = c->tasks->u.retrieve.elementSetName;
2436         break;
2437     default:
2438         return;
2439     }
2440     if (sr && sr->which == Z_Records_NSD)
2441         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2442     else if (sr && sr->which == Z_Records_multipleNSD)
2443     {
2444         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2445             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2446         else
2447             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2448     }
2449     else
2450     {
2451         if (*count + *start > resultset->size)
2452             *count = resultset->size - *start;
2453         if (*count < 0)
2454             *count = 0;
2455         if (sr && sr->which == Z_Records_DBOSD)
2456         {
2457             int i;
2458             NMEM nmem = odr_extract_mem(c->odr_in);
2459             Z_NamePlusRecordList *p =
2460                 sr->u.databaseOrSurDiagnostics;
2461             for (i = 0; i<p->num_records; i++)
2462             {
2463                 record_cache_add(resultset, p->records[i], i + *start,
2464                                  syntax, elementSetName,
2465                                  elementSetName, 0);
2466             }
2467             *count -= i;
2468             if (*count < 0)
2469                 *count = 0;
2470             *start += i;
2471             yaz_log(log_details,
2472                     "handle_records resultset=%p start=%d count=%d",
2473                     resultset, *start, *count);
2474
2475             /* transfer our response to search_nmem .. we need it later */
2476             nmem_transfer(odr_getmem(resultset->odr), nmem);
2477             nmem_destroy(nmem);
2478             if (present_phase && p->num_records == 0)
2479             {
2480                 /* present response and we didn't get any records! */
2481                 Z_NamePlusRecord *myrec =
2482                     zget_surrogateDiagRec(
2483                         resultset->odr, 0,
2484                         YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
2485                         "ZOOM C generated. Present phase and no records");
2486                 record_cache_add(resultset, myrec, *start,
2487                                  syntax, elementSetName, 0, 0);
2488             }
2489         }
2490         else if (present_phase)
2491         {
2492             /* present response and we didn't get any records! */
2493             Z_NamePlusRecord *myrec =
2494                 zget_surrogateDiagRec(
2495                     resultset->odr, 0,
2496                     YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
2497                     "ZOOM C generated: Present response and no records");
2498             record_cache_add(resultset, myrec, *start, syntax, elementSetName,
2499                              0, 0);
2500         }
2501     }
2502 }
2503
2504 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2505 {
2506     handle_records(c, pr->records, 1);
2507 }
2508
2509 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2510                                        Z_Term *term)
2511 {
2512     switch (term->which)
2513     {
2514     case Z_Term_general:
2515         ZOOM_options_setl(opt, name,
2516                           (const char *)(term->u.general->buf),
2517                           term->u.general->len);
2518         break;
2519     case Z_Term_characterString:
2520         ZOOM_options_set(opt, name, term->u.characterString);
2521         break;
2522     case Z_Term_numeric:
2523         ZOOM_options_set_int(opt, name, *term->u.numeric);
2524         break;
2525     }
2526 }
2527
2528 static void handle_queryExpression(ZOOM_options opt, const char *name,
2529                                    Z_QueryExpression *exp)
2530 {
2531     char opt_name[80];
2532
2533     switch (exp->which)
2534     {
2535     case Z_QueryExpression_term:
2536         if (exp->u.term && exp->u.term->queryTerm)
2537         {
2538             sprintf(opt_name, "%s.term", name);
2539             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2540         }
2541         break;
2542     case Z_QueryExpression_query:
2543         break;
2544     }
2545 }
2546
2547 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2548                                 Z_OtherInformation *o)
2549 {
2550     int i;
2551     for (i = 0; o && i < o->num_elements; i++)
2552     {
2553         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2554         {
2555             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2556
2557             if (ext->which == Z_External_searchResult1)
2558             {
2559                 int j;
2560                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2561
2562                 if (sr->num)
2563                     ZOOM_options_set_int(
2564                         resultset->options, "searchresult.size", sr->num);
2565
2566                 for (j = 0; j < sr->num; j++)
2567                 {
2568                     Z_SearchInfoReport_s *ent =
2569                         ext->u.searchResult1->elements[j];
2570                     char pref[80];
2571
2572                     sprintf(pref, "searchresult.%d", j);
2573
2574                     if (ent->subqueryId)
2575                     {
2576                         char opt_name[80];
2577                         sprintf(opt_name, "%s.id", pref);
2578                         ZOOM_options_set(resultset->options, opt_name,
2579                                          ent->subqueryId);
2580                     }
2581                     if (ent->subqueryExpression)
2582                     {
2583                         char opt_name[80];
2584                         sprintf(opt_name, "%s.subquery", pref);
2585                         handle_queryExpression(resultset->options, opt_name,
2586                                                ent->subqueryExpression);
2587                     }
2588                     if (ent->subqueryInterpretation)
2589                     {
2590                         char opt_name[80];
2591                         sprintf(opt_name, "%s.interpretation", pref);
2592                         handle_queryExpression(resultset->options, opt_name,
2593                                                ent->subqueryInterpretation);
2594                     }
2595                     if (ent->subqueryRecommendation)
2596                     {
2597                         char opt_name[80];
2598                         sprintf(opt_name, "%s.recommendation", pref);
2599                         handle_queryExpression(resultset->options, opt_name,
2600                                                ent->subqueryRecommendation);
2601                     }
2602                     if (ent->subqueryCount)
2603                     {
2604                         char opt_name[80];
2605                         sprintf(opt_name, "%s.count", pref);
2606                         ZOOM_options_set_int(resultset->options, opt_name,
2607                                              *ent->subqueryCount);
2608                     }
2609                 }
2610             }
2611         }
2612     }
2613 }
2614
2615 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2616 {
2617     ZOOM_resultset resultset;
2618     ZOOM_Event event;
2619
2620     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2621         return ;
2622
2623     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2624     ZOOM_connection_put_event(c, event);
2625
2626     resultset = c->tasks->u.search.resultset;
2627
2628     if (sr->resultSetStatus)
2629     {
2630         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2631                              *sr->resultSetStatus);
2632     }
2633     if (sr->presentStatus)
2634     {
2635         ZOOM_options_set_int(resultset->options, "presentStatus",
2636                              *sr->presentStatus);
2637     }
2638     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2639
2640     resultset->size = *sr->resultCount;
2641     handle_records(c, sr->records, 0);
2642 }
2643
2644 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2645 {
2646     if (res->diagnostics && res->num_diagnostics > 0)
2647         response_diag(c, res->diagnostics[0]);
2648 }
2649
2650 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2651 {
2652     NMEM nmem = odr_extract_mem(c->odr_in);
2653     ZOOM_scanset scan;
2654
2655     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2656         return 0;
2657     scan = c->tasks->u.scan.scan;
2658
2659     if (res->entries && res->entries->nonsurrogateDiagnostics)
2660         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2661     scan->scan_response = res;
2662     scan->srw_scan_response = 0;
2663     nmem_transfer(odr_getmem(scan->odr), nmem);
2664     if (res->stepSize)
2665         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2666     if (res->positionOfTerm)
2667         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2668     if (res->scanStatus)
2669         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2670     if (res->numberOfEntriesReturned)
2671         ZOOM_options_set_int(scan->options, "number",
2672                              *res->numberOfEntriesReturned);
2673     nmem_destroy(nmem);
2674     return 1;
2675 }
2676
2677 static zoom_ret send_sort(ZOOM_connection c,
2678                           ZOOM_resultset resultset)
2679 {
2680     if (c->error)
2681         resultset->r_sort_spec = 0;
2682     if (resultset->r_sort_spec)
2683     {
2684         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2685         Z_SortRequest *req = apdu->u.sortRequest;
2686
2687         req->num_inputResultSetNames = 1;
2688         req->inputResultSetNames = (Z_InternationalString **)
2689             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2690         req->inputResultSetNames[0] =
2691             odr_strdup(c->odr_out, resultset->setname);
2692         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2693         req->sortSequence = resultset->r_sort_spec;
2694         resultset->r_sort_spec = 0;
2695         return send_APDU(c, apdu);
2696     }
2697     return zoom_complete;
2698 }
2699
2700 static zoom_ret send_present(ZOOM_connection c)
2701 {
2702     Z_APDU *apdu = 0;
2703     Z_PresentRequest *req = 0;
2704     int i = 0;
2705     const char *syntax = 0;
2706     const char *elementSetName = 0;
2707     ZOOM_resultset  resultset;
2708     int *start, *count;
2709
2710     if (!c->tasks)
2711     {
2712         yaz_log(log_details, "%p send_present no tasks", c);
2713         return zoom_complete;
2714     }
2715
2716     switch (c->tasks->which)
2717     {
2718     case ZOOM_TASK_SEARCH:
2719         resultset = c->tasks->u.search.resultset;
2720         start = &c->tasks->u.search.start;
2721         count = &c->tasks->u.search.count;
2722         syntax = c->tasks->u.search.syntax;
2723         elementSetName = c->tasks->u.search.elementSetName;
2724         break;
2725     case ZOOM_TASK_RETRIEVE:
2726         resultset = c->tasks->u.retrieve.resultset;
2727         start = &c->tasks->u.retrieve.start;
2728         count = &c->tasks->u.retrieve.count;
2729         syntax = c->tasks->u.retrieve.syntax;
2730         elementSetName = c->tasks->u.retrieve.elementSetName;
2731         break;
2732     default:
2733         return zoom_complete;
2734     }
2735     yaz_log(log_details, "%p send_present start=%d count=%d",
2736             c, *start, *count);
2737
2738     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2739     {
2740         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2741                        "", 0);
2742     }
2743     if (c->error)                  /* don't continue on error */
2744         return zoom_complete;
2745     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2746             resultset, *start, *count);
2747
2748     for (i = 0; i < *count; i++)
2749     {
2750         ZOOM_record rec =
2751             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2752         if (!rec)
2753             break;
2754         else
2755         {
2756             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2757             ZOOM_connection_put_event(c, event);
2758         }
2759     }
2760     *start += i;
2761     *count -= i;
2762
2763     if (*count == 0)
2764     {
2765         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2766         return zoom_complete;
2767     }
2768
2769     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2770     req = apdu->u.presentRequest;
2771
2772     if (i)
2773         yaz_log(log_details, "%p send_present skip=%d", c, i);
2774
2775     *req->resultSetStartPoint = *start + 1;
2776
2777     if (resultset->step > 0 && resultset->step < *count)
2778         *req->numberOfRecordsRequested = resultset->step;
2779     else
2780         *req->numberOfRecordsRequested = *count;
2781
2782     if (*req->numberOfRecordsRequested + *start > resultset->size)
2783         *req->numberOfRecordsRequested = resultset->size - *start;
2784     assert(*req->numberOfRecordsRequested > 0);
2785
2786     if (syntax && *syntax)
2787         req->preferredRecordSyntax =
2788             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2789
2790     if (resultset->schema && *resultset->schema)
2791     {
2792         Z_RecordComposition *compo = (Z_RecordComposition *)
2793             odr_malloc(c->odr_out, sizeof(*compo));
2794
2795         req->recordComposition = compo;
2796         compo->which = Z_RecordComp_complex;
2797         compo->u.complex = (Z_CompSpec *)
2798             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2799         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2800             odr_malloc(c->odr_out, sizeof(bool_t));
2801         *compo->u.complex->selectAlternativeSyntax = 0;
2802
2803         compo->u.complex->generic = (Z_Specification *)
2804             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2805
2806         compo->u.complex->generic->which = Z_Schema_oid;
2807         compo->u.complex->generic->schema.oid = (Odr_oid *)
2808             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2809
2810         if (!compo->u.complex->generic->schema.oid)
2811         {
2812             /* OID wasn't a schema! Try record syntax instead. */
2813
2814             compo->u.complex->generic->schema.oid = (Odr_oid *)
2815                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2816         }
2817         if (elementSetName && *elementSetName)
2818         {
2819             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2820                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2821             compo->u.complex->generic->elementSpec->which =
2822                 Z_ElementSpec_elementSetName;
2823             compo->u.complex->generic->elementSpec->u.elementSetName =
2824                 odr_strdup(c->odr_out, elementSetName);
2825         }
2826         else
2827             compo->u.complex->generic->elementSpec = 0;
2828         compo->u.complex->num_dbSpecific = 0;
2829         compo->u.complex->dbSpecific = 0;
2830         compo->u.complex->num_recordSyntax = 0;
2831         compo->u.complex->recordSyntax = 0;
2832     }
2833     else if (elementSetName && *elementSetName)
2834     {
2835         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2836             odr_malloc(c->odr_out, sizeof(*esn));
2837         Z_RecordComposition *compo = (Z_RecordComposition *)
2838             odr_malloc(c->odr_out, sizeof(*compo));
2839
2840         esn->which = Z_ElementSetNames_generic;
2841         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2842         compo->which = Z_RecordComp_simple;
2843         compo->u.simple = esn;
2844         req->recordComposition = compo;
2845     }
2846     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2847     return send_APDU(c, apdu);
2848 }
2849
2850 ZOOM_API(ZOOM_scanset)
2851     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2852 {
2853     ZOOM_scanset s;
2854     ZOOM_query q = ZOOM_query_create();
2855
2856     ZOOM_query_prefix(q, start);
2857
2858     s = ZOOM_connection_scan1(c, q);
2859     ZOOM_query_destroy(q);
2860     return s;
2861
2862 }
2863
2864 ZOOM_API(ZOOM_scanset)
2865     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2866 {
2867     ZOOM_scanset scan = 0;
2868
2869     if (!q->z_query)
2870         return 0;
2871     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2872     scan->connection = c;
2873     scan->odr = odr_createmem(ODR_DECODE);
2874     scan->options = ZOOM_options_create_with_parent(c->options);
2875     scan->refcount = 1;
2876     scan->scan_response = 0;
2877     scan->srw_scan_response = 0;
2878
2879     scan->query = q;
2880     (q->refcount)++;
2881     scan->databaseNames = set_DatabaseNames(c, c->options,
2882                                             &scan->num_databaseNames,
2883                                             scan->odr);
2884
2885     if (1)
2886     {
2887         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2888         task->u.scan.scan = scan;
2889
2890         (scan->refcount)++;
2891         if (!c->async)
2892         {
2893             while (ZOOM_event(1, &c))
2894                 ;
2895         }
2896     }
2897     return scan;
2898 }
2899
2900 ZOOM_API(void)
2901     ZOOM_scanset_destroy(ZOOM_scanset scan)
2902 {
2903     if (!scan)
2904         return;
2905     (scan->refcount)--;
2906     if (scan->refcount == 0)
2907     {
2908         ZOOM_query_destroy(scan->query);
2909
2910         odr_destroy(scan->odr);
2911
2912         ZOOM_options_destroy(scan->options);
2913         xfree(scan);
2914     }
2915 }
2916
2917 static zoom_ret send_package(ZOOM_connection c)
2918 {
2919     ZOOM_Event event;
2920
2921     yaz_log(log_details, "%p send_package", c);
2922     if (!c->tasks)
2923         return zoom_complete;
2924     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2925
2926     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2927     ZOOM_connection_put_event(c, event);
2928
2929     c->buf_out = c->tasks->u.package->buf_out;
2930     c->len_out = c->tasks->u.package->len_out;
2931
2932     return do_write(c);
2933 }
2934
2935 static zoom_ret ZOOM_connection_send_scan(ZOOM_connection c)
2936 {
2937     ZOOM_scanset scan;
2938     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2939     Z_ScanRequest *req = apdu->u.scanRequest;
2940
2941     yaz_log(log_details, "%p send_scan", c);
2942     if (!c->tasks)
2943         return zoom_complete;
2944     assert (c->tasks->which == ZOOM_TASK_SCAN);
2945     scan = c->tasks->u.scan.scan;
2946
2947     /* Z39.50 scan can only carry RPN */
2948     if (scan->query->z_query->which == Z_Query_type_1 ||
2949         scan->query->z_query->which == Z_Query_type_101)
2950     {
2951         Z_RPNQuery *rpn = scan->query->z_query->u.type_1;
2952         const char *cp = ZOOM_options_get(scan->options, "rpnCharset");
2953         if (cp)
2954         {
2955             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
2956             if (cd)
2957             {
2958                 rpn = yaz_copy_z_RPNQuery(rpn, c->odr_out);
2959
2960                 yaz_query_charset_convert_rpnquery(
2961                     rpn, c->odr_out, cd);
2962                 yaz_iconv_close(cd);
2963             }
2964         }
2965         req->attributeSet = rpn->attributeSetId;
2966         if (!req->attributeSet)
2967             req->attributeSet = odr_oiddup(c->odr_out, yaz_oid_attset_bib_1);
2968         if (rpn->RPNStructure->which == Z_RPNStructure_simple &&
2969             rpn->RPNStructure->u.simple->which == Z_Operand_APT)
2970         {
2971             req->termListAndStartPoint =
2972                 rpn->RPNStructure->u.simple->u.attributesPlusTerm;
2973         }
2974         else
2975         {
2976             set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
2977             return zoom_complete;
2978         }
2979     }
2980     else
2981     {
2982         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2983         return zoom_complete;
2984     }
2985
2986     *req->numberOfTermsRequested =
2987         ZOOM_options_get_int(scan->options, "number", 20);
2988
2989     req->preferredPositionInResponse =
2990         odr_intdup(c->odr_out,
2991                    ZOOM_options_get_int(scan->options, "position", 1));
2992
2993     req->stepSize =
2994         odr_intdup(c->odr_out,
2995                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2996
2997     req->databaseNames = scan->databaseNames;
2998     req->num_databaseNames = scan->num_databaseNames;
2999
3000     return send_APDU(c, apdu);
3001 }
3002
3003 #if YAZ_HAVE_XML2
3004 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
3005 {
3006     ZOOM_scanset scan;
3007     Z_SRW_PDU *sr = 0;
3008     const char *option_val = 0;
3009
3010     if (!c->tasks)
3011         return zoom_complete;
3012     assert (c->tasks->which == ZOOM_TASK_SCAN);
3013     scan = c->tasks->u.scan.scan;
3014
3015     sr = ZOOM_srw_get_pdu(c, Z_SRW_scan_request);
3016
3017     /* SRU scan can only carry CQL and PQF */
3018     if (scan->query->z_query->which == Z_Query_type_104)
3019     {
3020         sr->u.scan_request->query_type = Z_SRW_query_type_cql;
3021         sr->u.scan_request->scanClause.cql = scan->query->query_string;
3022     }
3023     else if (scan->query->z_query->which == Z_Query_type_1
3024              || scan->query->z_query->which == Z_Query_type_101)
3025     {
3026         sr->u.scan_request->query_type = Z_SRW_query_type_pqf;
3027         sr->u.scan_request->scanClause.pqf = scan->query->query_string;
3028     }
3029     else
3030     {
3031         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
3032         return zoom_complete;
3033     }
3034
3035     sr->u.scan_request->maximumTerms = odr_intdup(
3036         c->odr_out, ZOOM_options_get_int(scan->options, "number", 10));
3037
3038     sr->u.scan_request->responsePosition = odr_intdup(
3039         c->odr_out, ZOOM_options_get_int(scan->options, "position", 1));
3040
3041     option_val = ZOOM_options_get(scan->options, "extraArgs");
3042     yaz_encode_sru_extra(sr, c->odr_out, option_val);
3043     return send_srw(c, sr);
3044 }
3045 #else
3046 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
3047 {
3048     return zoom_complete;
3049 }
3050 #endif
3051
3052
3053 ZOOM_API(size_t)
3054     ZOOM_scanset_size(ZOOM_scanset scan)
3055 {
3056     if (!scan)
3057         return 0;
3058
3059     if (scan->scan_response && scan->scan_response->entries)
3060         return scan->scan_response->entries->num_entries;
3061     else if (scan->srw_scan_response)
3062         return scan->srw_scan_response->num_terms;
3063     return 0;
3064 }
3065
3066 static void ZOOM_scanset_term_x(ZOOM_scanset scan, size_t pos,
3067                                 size_t *occ,
3068                                 const char **value_term, size_t *value_len,
3069                                 const char **disp_term, size_t *disp_len)
3070 {
3071     size_t noent = ZOOM_scanset_size(scan);
3072
3073     *value_term = 0;
3074     *value_len = 0;
3075
3076     *disp_term = 0;
3077     *disp_len = 0;
3078
3079     *occ = 0;
3080     if (pos >= noent)
3081         return;
3082     if (scan->scan_response)
3083     {
3084         Z_ScanResponse *res = scan->scan_response;
3085         if (res->entries->entries[pos]->which == Z_Entry_termInfo)
3086         {
3087             Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
3088
3089             *value_term = (const char *) t->term->u.general->buf;
3090             *value_len = t->term->u.general->len;
3091             if (t->displayTerm)
3092             {
3093                 *disp_term = t->displayTerm;
3094                 *disp_len = strlen(*disp_term);
3095             }
3096             else if (t->term->which == Z_Term_general)
3097             {
3098                 *disp_term = (const char *) t->term->u.general->buf;
3099                 *disp_len = t->term->u.general->len;
3100             }
3101             *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
3102         }
3103     }
3104     if (scan->srw_scan_response)
3105     {
3106         Z_SRW_scanResponse *res = scan->srw_scan_response;
3107         Z_SRW_scanTerm *t = res->terms + pos;
3108         if (t)
3109         {
3110             *value_term = t->value;
3111             *value_len = strlen(*value_term);
3112
3113             if (t->displayTerm)
3114                 *disp_term = t->displayTerm;
3115             else
3116                 *disp_term = t->value;
3117             *disp_len = strlen(*disp_term);
3118             *occ = t->numberOfRecords ? *t->numberOfRecords : 0;
3119         }
3120     }
3121 }
3122
3123 ZOOM_API(const char *)
3124     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
3125                       size_t *occ, size_t *len)
3126 {
3127     const char *value_term = 0;
3128     size_t value_len = 0;
3129     const char *disp_term = 0;
3130     size_t disp_len = 0;
3131
3132     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
3133                         &disp_term, &disp_len);
3134
3135     *len = value_len;
3136     return value_term;
3137 }
3138
3139 ZOOM_API(const char *)
3140     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
3141                               size_t *occ, size_t *len)
3142 {
3143     const char *value_term = 0;
3144     size_t value_len = 0;
3145     const char *disp_term = 0;
3146     size_t disp_len = 0;
3147
3148     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
3149                         &disp_term, &disp_len);
3150
3151     *len = disp_len;
3152     return disp_term;
3153 }
3154
3155 ZOOM_API(const char *)
3156     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
3157 {
3158     return ZOOM_options_get(scan->options, key);
3159 }
3160
3161 ZOOM_API(void)
3162     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
3163                             const char *val)
3164 {
3165     ZOOM_options_set(scan->options, key, val);
3166 }
3167
3168 static Z_APDU *create_es_package(ZOOM_package p, const Odr_oid *oid)
3169 {
3170     const char *str;
3171     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
3172     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3173
3174     str = ZOOM_options_get(p->options, "package-name");
3175     if (str && *str)
3176         req->packageName = odr_strdup(p->odr_out, str);
3177
3178     str = ZOOM_options_get(p->options, "user-id");
3179     if (str)
3180         req->userId = odr_strdup_null(p->odr_out, str);
3181
3182     req->packageType = odr_oiddup(p->odr_out, oid);
3183
3184     str = ZOOM_options_get(p->options, "function");
3185     if (str)
3186     {
3187         if (!strcmp (str, "create"))
3188             *req->function = Z_ExtendedServicesRequest_create;
3189         if (!strcmp (str, "delete"))
3190             *req->function = Z_ExtendedServicesRequest_delete;
3191         if (!strcmp (str, "modify"))
3192             *req->function = Z_ExtendedServicesRequest_modify;
3193     }
3194
3195     str = ZOOM_options_get(p->options, "waitAction");
3196     if (str)
3197     {
3198         if (!strcmp (str, "wait"))
3199             *req->waitAction = Z_ExtendedServicesRequest_wait;
3200         if (!strcmp (str, "waitIfPossible"))
3201             *req->waitAction = Z_ExtendedServicesRequest_waitIfPossible;
3202         if (!strcmp (str, "dontWait"))
3203             *req->waitAction = Z_ExtendedServicesRequest_dontWait;
3204         if (!strcmp (str, "dontReturnPackage"))
3205             *req->waitAction = Z_ExtendedServicesRequest_dontReturnPackage;
3206     }
3207     return apdu;
3208 }
3209
3210 static const char *ill_array_lookup(void *clientData, const char *idx)
3211 {
3212     ZOOM_package p = (ZOOM_package) clientData;
3213     return ZOOM_options_get(p->options, idx+4);
3214 }
3215
3216 static Z_External *encode_ill_request(ZOOM_package p)
3217 {
3218     ODR out = p->odr_out;
3219     ILL_Request *req;
3220     Z_External *r = 0;
3221     struct ill_get_ctl ctl;
3222
3223     ctl.odr = p->odr_out;
3224     ctl.clientData = p;
3225     ctl.f = ill_array_lookup;
3226
3227     req = ill_get_ILLRequest(&ctl, "ill", 0);
3228
3229     if (!ill_Request(out, &req, 0, 0))
3230     {
3231         int ill_request_size;
3232         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
3233         if (ill_request_buf)
3234             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
3235         return 0;
3236     }
3237     else
3238     {
3239         int illRequest_size = 0;
3240         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
3241
3242         r = (Z_External *) odr_malloc(out, sizeof(*r));
3243         r->direct_reference = odr_oiddup(out, yaz_oid_general_isoill_1);
3244         r->indirect_reference = 0;
3245         r->descriptor = 0;
3246         r->which = Z_External_single;
3247
3248         r->u.single_ASN1_type =
3249             odr_create_Odr_oct(out,
3250                                (unsigned char *)illRequest_buf,
3251                                illRequest_size);
3252     }
3253     return r;
3254 }
3255
3256 static Z_ItemOrder *encode_item_order(ZOOM_package p)
3257 {
3258     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
3259     const char *str;
3260     int len;
3261
3262     req->which = Z_IOItemOrder_esRequest;
3263     req->u.esRequest = (Z_IORequest *)
3264         odr_malloc(p->odr_out,sizeof(Z_IORequest));
3265
3266     /* to keep part ... */
3267     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
3268         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
3269     req->u.esRequest->toKeep->supplDescription = 0;
3270     req->u.esRequest->toKeep->contact = (Z_IOContact *)
3271         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
3272
3273     str = ZOOM_options_get(p->options, "contact-name");
3274     req->u.esRequest->toKeep->contact->name =
3275         odr_strdup_null(p->odr_out, str);
3276
3277     str = ZOOM_options_get(p->options, "contact-phone");
3278     req->u.esRequest->toKeep->contact->phone =
3279         odr_strdup_null(p->odr_out, str);
3280
3281     str = ZOOM_options_get(p->options, "contact-email");
3282     req->u.esRequest->toKeep->contact->email =
3283         odr_strdup_null(p->odr_out, str);
3284
3285     req->u.esRequest->toKeep->addlBilling = 0;
3286
3287     /* not to keep part ... */
3288     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
3289         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
3290
3291     str = ZOOM_options_get(p->options, "itemorder-setname");
3292     if (!str)
3293         str = "default";
3294
3295     if (!*str)
3296         req->u.esRequest->notToKeep->resultSetItem = 0;
3297     else
3298     {
3299         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
3300             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
3301
3302         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
3303             odr_strdup(p->odr_out, str);
3304         req->u.esRequest->notToKeep->resultSetItem->item =
3305             odr_intdup(p->odr_out, 0);
3306
3307         str = ZOOM_options_get(p->options, "itemorder-item");
3308         *req->u.esRequest->notToKeep->resultSetItem->item =
3309             (str ? atoi(str) : 1);
3310     }
3311
3312     str = ZOOM_options_getl(p->options, "doc", &len);
3313     if (str)
3314     {
3315         req->u.esRequest->notToKeep->itemRequest =
3316             z_ext_record_xml(p->odr_out, str, len);
3317     }
3318     else
3319         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3320
3321     return req;
3322 }
3323
3324 Z_APDU *create_admin_package(ZOOM_package p, int type,
3325                              Z_ESAdminOriginPartToKeep **toKeepP,
3326                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3327 {
3328     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_admin);
3329     if (apdu)
3330     {
3331         Z_ESAdminOriginPartToKeep  *toKeep;
3332         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3333         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3334         const char *first_db = "Default";
3335         int num_db;
3336         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3337                                       p->odr_out);
3338         if (num_db > 0)
3339             first_db = db[0];
3340
3341         r->direct_reference = odr_oiddup(p->odr_out, yaz_oid_extserv_admin);
3342         r->descriptor = 0;
3343         r->indirect_reference = 0;
3344         r->which = Z_External_ESAdmin;
3345
3346         r->u.adminService = (Z_Admin *)
3347             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3348         r->u.adminService->which = Z_Admin_esRequest;
3349         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3350             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3351
3352         toKeep = r->u.adminService->u.esRequest->toKeep =
3353             (Z_ESAdminOriginPartToKeep *)
3354             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3355         toKeep->which = type;
3356         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3357         toKeep->u.create = odr_nullval();
3358         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3359
3360         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3361             (Z_ESAdminOriginPartNotToKeep *)
3362             odr_malloc(p->odr_out,
3363                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3364         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3365         notToKeep->u.recordsWillFollow = odr_nullval();
3366         if (toKeepP)
3367             *toKeepP = toKeep;
3368         if (notToKeepP)
3369             *notToKeepP = notToKeep;
3370     }
3371     return apdu;
3372 }
3373
3374 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3375 {
3376     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_xml_es);
3377     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3378     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3379     int len;
3380     const char *doc = ZOOM_options_getl(p->options, "doc", &len);
3381
3382     if (!doc)
3383     {
3384         doc = "";
3385         len = 0;
3386     }
3387
3388     req->taskSpecificParameters = ext;
3389     ext->direct_reference = req->packageType;
3390     ext->descriptor = 0;
3391     ext->indirect_reference = 0;
3392
3393     ext->which = Z_External_octet;
3394     ext->u.single_ASN1_type =
3395         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc, len);
3396     return apdu;
3397 }
3398
3399 static Z_APDU *create_update_package(ZOOM_package p)
3400 {
3401     Z_APDU *apdu = 0;
3402     const char *first_db = "Default";
3403     int num_db;
3404     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3405     const char *action = ZOOM_options_get(p->options, "action");
3406     int recordIdOpaque_len;
3407     const char *recordIdOpaque = ZOOM_options_getl(p->options, "recordIdOpaque",
3408         &recordIdOpaque_len);
3409     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3410     int record_len;
3411     const char *record_buf = ZOOM_options_getl(p->options, "record",
3412         &record_len);
3413     int recordOpaque_len;
3414     const char *recordOpaque_buf = ZOOM_options_getl(p->options, "recordOpaque",
3415         &recordOpaque_len);
3416     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3417     const char *version = ZOOM_options_get(p->options, "updateVersion");
3418
3419     const char *correlationInfo_note =
3420         ZOOM_options_get(p->options, "correlationInfo.note");
3421     const char *correlationInfo_id =
3422         ZOOM_options_get(p->options, "correlationInfo.id");
3423     int action_no = -1;
3424     Odr_oid *syntax_oid = 0;
3425     const Odr_oid *package_oid = yaz_oid_extserv_database_update;
3426
3427     if (!version)
3428         version = "3";
3429     if (!syntax_str)
3430         syntax_str = "xml";
3431     if (!record_buf && !recordOpaque_buf)
3432     {
3433         record_buf = "void";
3434         record_len = 4;
3435         syntax_str = "SUTRS";
3436     }
3437
3438     if (syntax_str)
3439     {
3440         syntax_oid = yaz_string_to_oid_odr(yaz_oid_std(),
3441                                            CLASS_RECSYN, syntax_str,
3442                                            p->odr_out);
3443     }
3444     if (!syntax_oid)
3445         return 0;
3446
3447     if (num_db > 0)
3448         first_db = db[0];
3449
3450     switch(*version)
3451     {
3452     case '1':
3453         package_oid = yaz_oid_extserv_database_update_first_version;
3454         /* old update does not support specialUpdate */
3455         if (!action)
3456             action = "recordInsert";
3457         break;
3458     case '2':
3459         if (!action)
3460             action = "specialUpdate";
3461         package_oid = yaz_oid_extserv_database_update_second_version;
3462         break;
3463     case '3':
3464         if (!action)
3465             action = "specialUpdate";
3466         package_oid = yaz_oid_extserv_database_update;
3467         break;
3468     default:
3469         return 0;
3470     }
3471
3472     if (!strcmp(action, "recordInsert"))
3473         action_no = Z_IUOriginPartToKeep_recordInsert;
3474     else if (!strcmp(action, "recordReplace"))
3475         action_no = Z_IUOriginPartToKeep_recordReplace;
3476     else if (!strcmp(action, "recordDelete"))
3477         action_no = Z_IUOriginPartToKeep_recordDelete;
3478     else if (!strcmp(action, "elementUpdate"))
3479         action_no = Z_IUOriginPartToKeep_elementUpdate;
3480     else if (!strcmp(action, "specialUpdate"))
3481         action_no = Z_IUOriginPartToKeep_specialUpdate;
3482     else
3483         return 0;
3484
3485     apdu = create_es_package(p, package_oid);
3486     if (apdu)
3487     {
3488         Z_IUOriginPartToKeep *toKeep;
3489         Z_IUSuppliedRecords *notToKeep;
3490         Z_External *r = (Z_External *)
3491             odr_malloc(p->odr_out, sizeof(*r));
3492         const char *elementSetName =
3493             ZOOM_options_get(p->options, "elementSetName");
3494
3495         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3496
3497         r->direct_reference = odr_oiddup(p->odr_out, package_oid);
3498         r->descriptor = 0;
3499         r->which = Z_External_update;
3500         r->indirect_reference = 0;
3501         r->u.update = (Z_IUUpdate *)
3502             odr_malloc(p->odr_out, sizeof(*r->u.update));
3503
3504         r->u.update->which = Z_IUUpdate_esRequest;
3505         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3506             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3507         toKeep = r->u.update->u.esRequest->toKeep =
3508             (Z_IUOriginPartToKeep *)
3509             odr_malloc(p->odr_out, sizeof(*toKeep));
3510
3511         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3512         toKeep->schema = 0;
3513
3514         toKeep->elementSetName = odr_strdup_null(p->odr_out, elementSetName);
3515
3516         toKeep->actionQualifier = 0;
3517         toKeep->action = odr_intdup(p->odr_out, action_no);
3518
3519         notToKeep = r->u.update->u.esRequest->notToKeep =
3520             (Z_IUSuppliedRecords *)
3521             odr_malloc(p->odr_out, sizeof(*notToKeep));
3522         notToKeep->num = 1;
3523         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3524             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3525         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3526             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3527         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3528         if (recordIdOpaque)
3529         {
3530             notToKeep->elements[0]->u.opaque =
3531                 odr_create_Odr_oct(p->odr_out,
3532                                    (const unsigned char *) recordIdOpaque,
3533                                    recordIdOpaque_len);
3534         }
3535         else if (recordIdNumber)
3536         {
3537             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3538
3539             notToKeep->elements[0]->u.number =
3540                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3541         }
3542         else
3543             notToKeep->elements[0]->u.opaque = 0;
3544         notToKeep->elements[0]->supplementalId = 0;
3545         if (correlationInfo_note || correlationInfo_id)
3546         {
3547             Z_IUCorrelationInfo *ci;
3548             ci = notToKeep->elements[0]->correlationInfo =
3549                 (Z_IUCorrelationInfo *) odr_malloc(p->odr_out, sizeof(*ci));
3550             ci->note = odr_strdup_null(p->odr_out, correlationInfo_note);
3551             ci->id = correlationInfo_id ?
3552                 odr_intdup(p->odr_out, atoi(correlationInfo_id)) : 0;
3553         }
3554         else
3555             notToKeep->elements[0]->correlationInfo = 0;
3556         if (recordOpaque_buf)
3557         {
3558             notToKeep->elements[0]->record =
3559                 z_ext_record_oid_any(p->odr_out, syntax_oid,
3560                                  recordOpaque_buf, recordOpaque_len);
3561         }
3562         else
3563         {
3564             notToKeep->elements[0]->record =
3565                 z_ext_record_oid(p->odr_out, syntax_oid,
3566                                  record_buf, record_len);
3567         }
3568     }
3569     if (0 && apdu)
3570     {
3571         ODR print = odr_createmem(ODR_PRINT);
3572
3573         z_APDU(print, &apdu, 0, 0);
3574         odr_destroy(print);
3575     }
3576     return apdu;
3577 }
3578
3579 ZOOM_API(void)
3580     ZOOM_package_send(ZOOM_package p, const char *type)
3581 {
3582     Z_APDU *apdu = 0;
3583     ZOOM_connection c;
3584     if (!p)
3585         return;
3586     c = p->connection;
3587     odr_reset(p->odr_out);
3588     xfree(p->buf_out);
3589     p->buf_out = 0;
3590     if (!strcmp(type, "itemorder"))
3591     {
3592         apdu = create_es_package(p, yaz_oid_extserv_item_order);
3593         if (apdu)
3594         {
3595             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3596
3597             r->direct_reference =
3598                 odr_oiddup(p->odr_out, yaz_oid_extserv_item_order);
3599             r->descriptor = 0;
3600             r->which = Z_External_itemOrder;
3601             r->indirect_reference = 0;
3602             r->u.itemOrder = encode_item_order(p);
3603
3604             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3605         }
3606     }
3607     else if (!strcmp(type, "create"))  /* create database */
3608     {
3609         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3610                                     0, 0);
3611     }
3612     else if (!strcmp(type, "drop"))  /* drop database */
3613     {
3614         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3615                                     0, 0);
3616     }
3617     else if (!strcmp(type, "commit"))  /* commit changes */
3618     {
3619         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3620                                     0, 0);
3621     }
3622     else if (!strcmp(type, "update")) /* update record(s) */
3623     {
3624         apdu = create_update_package(p);
3625     }
3626     else if (!strcmp(type, "xmlupdate"))
3627     {
3628         apdu = create_xmlupdate_package(p);
3629     }
3630     if (apdu)
3631     {
3632         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3633         {
3634             char *buf;
3635
3636             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3637             task->u.package = p;
3638             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3639             p->buf_out = (char *) xmalloc(p->len_out);
3640             memcpy(p->buf_out, buf, p->len_out);
3641
3642             (p->refcount)++;
3643             if (!c->async)
3644             {
3645                 while (ZOOM_event(1, &c))
3646                     ;
3647             }
3648         }
3649     }
3650 }
3651
3652 ZOOM_API(ZOOM_package)
3653     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3654 {
3655     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3656
3657     p->connection = c;
3658     p->odr_out = odr_createmem(ODR_ENCODE);
3659     p->options = ZOOM_options_create_with_parent2(options, c->options);
3660     p->refcount = 1;
3661     p->buf_out = 0;
3662     p->len_out = 0;
3663     return p;
3664 }
3665
3666 ZOOM_API(void)
3667     ZOOM_package_destroy(ZOOM_package p)
3668 {
3669     if (!p)
3670         return;
3671     (p->refcount)--;
3672     if (p->refcount == 0)
3673     {
3674         odr_destroy(p->odr_out);
3675         xfree(p->buf_out);
3676
3677         ZOOM_options_destroy(p->options);
3678         xfree(p);
3679     }
3680 }
3681
3682 ZOOM_API(const char *)
3683     ZOOM_package_option_get(ZOOM_package p, const char *key)
3684 {
3685     return ZOOM_options_get(p->options, key);
3686 }
3687
3688 ZOOM_API(const char *)
3689     ZOOM_package_option_getl(ZOOM_package p, const char *key, int *lenp)
3690 {
3691     return ZOOM_options_getl(p->options, key, lenp);
3692 }
3693
3694 ZOOM_API(void)
3695     ZOOM_package_option_set(ZOOM_package p, const char *key,
3696                             const char *val)
3697 {
3698     ZOOM_options_set(p->options, key, val);
3699 }
3700
3701 ZOOM_API(void)
3702     ZOOM_package_option_setl(ZOOM_package p, const char *key,
3703                              const char *val, int len)
3704 {
3705     ZOOM_options_setl(p->options, key, val, len);
3706 }
3707
3708 ZOOM_API(int)
3709     ZOOM_connection_exec_task(ZOOM_connection c)
3710 {
3711     ZOOM_task task = c->tasks;
3712     zoom_ret ret = zoom_complete;
3713
3714     if (!task)
3715         return 0;
3716     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3717             c, task->which, task->running);
3718     if (c->error != ZOOM_ERROR_NONE)
3719     {
3720         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3721                 "removing tasks because of error = %d", c, c->error);
3722         ZOOM_connection_remove_tasks(c);
3723         return 0;
3724     }
3725     if (task->running)
3726     {
3727         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3728                 "task already running", c);
3729         return 0;
3730     }
3731     task->running = 1;
3732     ret = zoom_complete;
3733     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3734     {
3735         switch (task->which)
3736         {
3737         case ZOOM_TASK_SEARCH:
3738             if (c->proto == PROTO_HTTP)
3739                 ret = ZOOM_connection_srw_send_search(c);
3740             else
3741                 ret = ZOOM_connection_send_search(c);
3742             break;
3743         case ZOOM_TASK_RETRIEVE:
3744             if (c->proto == PROTO_HTTP)
3745                 ret = ZOOM_connection_srw_send_search(c);
3746             else
3747                 ret = send_present(c);
3748             break;
3749         case ZOOM_TASK_CONNECT:
3750             ret = do_connect(c);
3751             break;
3752         case ZOOM_TASK_SCAN:
3753             if (c->proto == PROTO_HTTP)
3754                 ret = ZOOM_connection_srw_send_scan(c);
3755             else
3756                 ret = ZOOM_connection_send_scan(c);
3757             break;
3758         case ZOOM_TASK_PACKAGE:
3759             ret = send_package(c);
3760             break;
3761         case ZOOM_TASK_SORT:
3762             c->tasks->u.sort.resultset->r_sort_spec =
3763                 c->tasks->u.sort.q->sort_spec;
3764             ret = send_sort(c, c->tasks->u.sort.resultset);
3765             break;
3766         }
3767     }
3768     else
3769     {
3770         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3771                 "remove tasks because no connection exist", c);
3772         ZOOM_connection_remove_tasks(c);
3773     }
3774     if (ret == zoom_complete)
3775     {
3776         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3777                 "task removed (complete)", c);
3778         ZOOM_connection_remove_task(c);
3779         return 0;
3780     }
3781     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3782             "task pending", c);
3783     return 1;
3784 }
3785
3786 static zoom_ret send_sort_present(ZOOM_connection c)
3787 {
3788     zoom_ret r = zoom_complete;
3789
3790     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3791         r = send_sort(c, c->tasks->u.search.resultset);
3792     if (r == zoom_complete)
3793         r = send_present(c);
3794     return r;
3795 }
3796
3797 static int es_response_taskpackage_update(ZOOM_connection c,
3798                 Z_IUUpdateTaskPackage *utp)
3799 {
3800         if (utp && utp->targetPart)
3801         {
3802                 Z_IUTargetPart *targetPart = utp->targetPart;
3803                 switch ( *targetPart->updateStatus ) {
3804                         case Z_IUTargetPart_success:
3805                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "success");
3806                                 break;
3807                         case Z_IUTargetPart_partial:
3808                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "partial");
3809                                 break;
3810                         case Z_IUTargetPart_failure:
3811                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "failure");
3812                                 if (targetPart->globalDiagnostics && targetPart->num_globalDiagnostics > 0)
3813                                         response_diag(c, targetPart->globalDiagnostics[0]);
3814                                 break;
3815                 }
3816                 // NOTE: Individual record status, surrogate diagnostics, and supplemental diagnostics ARE NOT REPORTED.
3817         }
3818     return 1;
3819 }
3820
3821 static int es_response_taskpackage(ZOOM_connection c,
3822                                    Z_TaskPackage *taskPackage)
3823 {
3824         // targetReference
3825         Odr_oct *id = taskPackage->targetReference;
3826         if (id)
3827                 ZOOM_options_setl(c->tasks->u.package->options,
3828                                                         "targetReference", (char*) id->buf, id->len);
3829
3830         // taskStatus
3831         switch ( *taskPackage->taskStatus ) {
3832                 case Z_TaskPackage_pending:
3833                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "pending");
3834                         break;
3835                 case Z_TaskPackage_active:
3836                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "active");
3837                         break;
3838                 case Z_TaskPackage_complete:
3839                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "complete");
3840                         break;
3841                 case Z_TaskPackage_aborted:
3842                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "aborted");
3843                         if ( taskPackage->num_packageDiagnostics && taskPackage->packageDiagnostics )
3844                                 response_diag(c, taskPackage->packageDiagnostics[0]);
3845                         break;
3846         }
3847
3848         // taskSpecificParameters
3849         // NOTE: Only Update implemented, no others.
3850         if ( taskPackage->taskSpecificParameters->which == Z_External_update ) {
3851                         Z_IUUpdateTaskPackage *utp = taskPackage->taskSpecificParameters->u.update->u.taskPackage;
3852                         es_response_taskpackage_update(c, utp);
3853         }
3854         return 1;
3855 }
3856
3857
3858 static int es_response(ZOOM_connection c,
3859                        Z_ExtendedServicesResponse *res)
3860 {
3861     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3862         return 0;
3863     switch (*res->operationStatus) {
3864         case Z_ExtendedServicesResponse_done:
3865             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "done");
3866             break;
3867         case Z_ExtendedServicesResponse_accepted:
3868             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "accepted");
3869             break;
3870         case Z_ExtendedServicesResponse_failure:
3871             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "failure");
3872             if (res->diagnostics && res->num_diagnostics > 0)
3873                 response_diag(c, res->diagnostics[0]);
3874             break;
3875     }
3876     if (res->taskPackage &&
3877         res->taskPackage->which == Z_External_extendedService)
3878     {
3879         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3880         es_response_taskpackage(c, taskPackage);
3881     }
3882     if (res->taskPackage &&
3883         res->taskPackage->which == Z_External_octet)
3884     {
3885         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3886         ZOOM_options_setl(c->tasks->u.package->options,
3887                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3888     }
3889     return 1;
3890 }
3891
3892 static void interpret_init_diag(ZOOM_connection c,
3893                                 Z_DiagnosticFormat *diag)
3894 {
3895     if (diag->num > 0)
3896     {
3897         Z_DiagnosticFormat_s *ds = diag->elements[0];
3898         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3899             response_default_diag(c, ds->u.defaultDiagRec);
3900     }
3901 }
3902
3903
3904 static void interpret_otherinformation_field(ZOOM_connection c,
3905                                              Z_OtherInformation *ui)
3906 {
3907     int i;
3908     for (i = 0; i < ui->num_elements; i++)
3909     {
3910         Z_OtherInformationUnit *unit = ui->list[i];
3911         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3912             unit->information.externallyDefinedInfo &&
3913             unit->information.externallyDefinedInfo->which ==
3914             Z_External_diag1)
3915         {
3916             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3917         }
3918     }
3919 }
3920
3921
3922 static void set_init_option(const char *name, void *clientData) {
3923     ZOOM_connection c = (ZOOM_connection) clientData;
3924     char buf[80];
3925
3926     sprintf(buf, "init_opt_%.70s", name);
3927     ZOOM_connection_option_set(c, buf, "1");
3928 }
3929
3930
3931 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3932 {
3933     Z_InitResponse *initrs;
3934
3935     ZOOM_connection_set_mask(c, 0);
3936     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3937     switch(apdu->which)
3938     {
3939     case Z_APDU_initResponse:
3940         yaz_log(log_api, "%p recv_apdu: Received Init response", c);
3941         initrs = apdu->u.initResponse;
3942         ZOOM_connection_option_set(c, "serverImplementationId",
3943                                    initrs->implementationId ?
3944                                    initrs->implementationId : "");
3945         ZOOM_connection_option_set(c, "serverImplementationName",
3946                                    initrs->implementationName ?
3947                                    initrs->implementationName : "");
3948         ZOOM_connection_option_set(c, "serverImplementationVersion",
3949                                    initrs->implementationVersion ?
3950                                    initrs->implementationVersion : "");
3951         /* Set the three old options too, for old applications */
3952         ZOOM_connection_option_set(c, "targetImplementationId",
3953                                    initrs->implementationId ?
3954                                    initrs->implementationId : "");
3955         ZOOM_connection_option_set(c, "targetImplementationName",
3956                                    initrs->implementationName ?
3957                                    initrs->implementationName : "");
3958         ZOOM_connection_option_set(c, "targetImplementationVersion",
3959                                    initrs->implementationVersion ?
3960                                    initrs->implementationVersion : "");
3961
3962         /* Make initrs->options available as ZOOM-level options */
3963         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3964
3965         if (!*initrs->result)
3966         {
3967             Z_External *uif = initrs->userInformationField;
3968
3969             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3970
3971             if (uif && uif->which == Z_External_userInfo1)
3972                 interpret_otherinformation_field(c, uif->u.userInfo1);
3973         }
3974         else
3975         {
3976             char *cookie =
3977                 yaz_oi_get_string_oid(&apdu->u.initResponse->otherInfo,
3978                                       yaz_oid_userinfo_cookie, 1, 0);
3979             xfree(c->cookie_in);
3980             c->cookie_in = 0;
3981             if (cookie)
3982                 c->cookie_in = xstrdup(cookie);
3983             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3984                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3985                 c->support_named_resultsets = 1;
3986             if (c->tasks)
3987             {
3988                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3989                 ZOOM_connection_remove_task(c);
3990             }
3991             ZOOM_connection_exec_task(c);
3992         }
3993         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3994         {
3995             NMEM tmpmem = nmem_create();
3996             Z_CharSetandLanguageNegotiation *p =
3997                 yaz_get_charneg_record(initrs->otherInfo);
3998
3999             if (p)
4000             {
4001                 char *charset = NULL, *lang = NULL;
4002                 int sel;
4003
4004                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
4005                 yaz_log(log_details, "%p recv_apdu target accepted: "
4006                         "charset %s, language %s, select %d",
4007                         c,
4008                         charset ? charset : "none", lang ? lang : "none", sel);
4009                 if (charset)
4010                     ZOOM_connection_option_set(c, "negotiation-charset",
4011                                                charset);
4012                 if (lang)
4013                     ZOOM_connection_option_set(c, "negotiation-lang",
4014                                                lang);
4015
4016                 ZOOM_connection_option_set(
4017                     c,  "negotiation-charset-in-effect-for-records",
4018                     (sel != 0) ? "1" : "0");
4019                 nmem_destroy(tmpmem);
4020             }
4021         }
4022         break;
4023     case Z_APDU_searchResponse:
4024         yaz_log(log_api, "%p recv_apdu Search response", c);
4025         handle_search_response(c, apdu->u.searchResponse);
4026         if (send_sort_present(c) == zoom_complete)
4027             ZOOM_connection_remove_task(c);
4028         break;
4029     case Z_APDU_presentResponse:
4030         yaz_log(log_api, "%p recv_apdu Present response", c);
4031         handle_present_response(c, apdu->u.presentResponse);
4032         if (send_present(c) == zoom_complete)
4033             ZOOM_connection_remove_task(c);
4034         break;
4035     case Z_APDU_sortResponse:
4036         yaz_log(log_api, "%p recv_apdu Sort response", c);
4037         sort_response(c, apdu->u.sortResponse);
4038         if (send_present(c) == zoom_complete)
4039             ZOOM_connection_remove_task(c);
4040         break;
4041     case Z_APDU_scanResponse:
4042         yaz_log(log_api, "%p recv_apdu Scan response", c);
4043         scan_response(c, apdu->u.scanResponse);
4044         ZOOM_connection_remove_task(c);
4045         break;
4046     case Z_APDU_extendedServicesResponse:
4047         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
4048         es_response(c, apdu->u.extendedServicesResponse);
4049         ZOOM_connection_remove_task(c);
4050         break;
4051     case Z_APDU_close:
4052         yaz_log(log_api, "%p recv_apdu Close PDU", c);
4053         if (!ZOOM_test_reconnect(c))
4054         {
4055             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4056             do_close(c);
4057         }
4058         break;
4059     default:
4060         yaz_log(log_api, "%p Received unknown PDU", c);
4061         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
4062         do_close(c);
4063     }
4064 }
4065
4066 #if YAZ_HAVE_XML2
4067 static zoom_ret handle_srw_response(ZOOM_connection c,
4068                                     Z_SRW_searchRetrieveResponse *res)
4069 {
4070     ZOOM_resultset resultset = 0;
4071     int i;
4072     NMEM nmem;
4073     ZOOM_Event event;
4074     int *start, *count;
4075     const char *syntax, *elementSetName;
4076
4077     if (!c->tasks)
4078         return zoom_complete;
4079
4080     switch(c->tasks->which)
4081     {
4082     case ZOOM_TASK_SEARCH:
4083         resultset = c->tasks->u.search.resultset;
4084         start = &c->tasks->u.search.start;
4085         count = &c->tasks->u.search.count;
4086         syntax = c->tasks->u.search.syntax;
4087         elementSetName = c->tasks->u.search.elementSetName;
4088
4089         if (!c->tasks->u.search.recv_search_fired)
4090         {
4091             event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
4092             ZOOM_connection_put_event(c, event);
4093             c->tasks->u.search.recv_search_fired = 1;
4094         }
4095         break;
4096     case ZOOM_TASK_RETRIEVE:
4097         resultset = c->tasks->u.retrieve.resultset;
4098         start = &c->tasks->u.retrieve.start;
4099         count = &c->tasks->u.retrieve.count;
4100         syntax = c->tasks->u.retrieve.syntax;
4101         elementSetName = c->tasks->u.retrieve.elementSetName;
4102         break;
4103     default:
4104         return zoom_complete;
4105     }
4106
4107     resultset->size = 0;
4108
4109     if (res->resultSetId)
4110         ZOOM_resultset_option_set(resultset, "resultSetId", res->resultSetId);
4111
4112     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
4113
4114     if (res->num_diagnostics > 0)
4115     {
4116         set_SRU_error(c, &res->diagnostics[0]);
4117     }
4118     else
4119     {
4120         if (res->numberOfRecords)
4121             resultset->size = *res->numberOfRecords;
4122         for (i = 0; i<res->num_records; i++)
4123         {
4124             int pos;
4125             Z_SRW_record *sru_rec;
4126             Z_SRW_diagnostic *diag = 0;
4127             int num_diag;
4128
4129             Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
4130                 odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
4131
4132             if (res->records[i].recordPosition &&
4133                 *res->records[i].recordPosition > 0)
4134                 pos = *res->records[i].recordPosition - 1;
4135             else
4136                 pos = *start + i;
4137
4138             sru_rec = &res->records[i];
4139
4140             npr->databaseName = 0;
4141             npr->which = Z_NamePlusRecord_databaseRecord;
4142             npr->u.databaseRecord = (Z_External *)
4143                 odr_malloc(c->odr_in, sizeof(Z_External));
4144             npr->u.databaseRecord->descriptor = 0;
4145             npr->u.databaseRecord->direct_reference =
4146                 odr_oiddup(c->odr_in, yaz_oid_recsyn_xml);
4147             npr->u.databaseRecord->which = Z_External_octet;
4148
4149             npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
4150                 odr_malloc(c->odr_in, sizeof(Odr_oct));
4151             npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
4152                 sru_rec->recordData_buf;
4153             npr->u.databaseRecord->u.octet_aligned->len =
4154                 npr->u.databaseRecord->u.octet_aligned->size =
4155                 sru_rec->recordData_len;
4156
4157             if (sru_rec->recordSchema
4158                 && !strcmp(sru_rec->recordSchema,
4159                            "info:srw/schema/1/diagnostics-v1.1"))
4160             {
4161                 sru_decode_surrogate_diagnostics(sru_rec->recordData_buf,
4162                                                  sru_rec->recordData_len,
4163                                                  &diag, &num_diag,
4164                                                  resultset->odr);
4165             }
4166             record_cache_add(resultset, npr, pos, syntax, elementSetName,
4167                              sru_rec->recordSchema, diag);
4168         }
4169         *count -= i;
4170         *start += i;
4171         if (*count + *start > resultset->size)
4172             *count = resultset->size - *start;
4173         if (*count < 0)
4174             *count = 0;
4175
4176         nmem = odr_extract_mem(c->odr_in);
4177         nmem_transfer(odr_getmem(resultset->odr), nmem);
4178         nmem_destroy(nmem);
4179
4180         if (*count > 0)
4181             return ZOOM_connection_srw_send_search(c);
4182     }
4183     return zoom_complete;
4184 }
4185 #endif
4186
4187 #if YAZ_HAVE_XML2
4188 static void handle_srw_scan_response(ZOOM_connection c,
4189                                      Z_SRW_scanResponse *res)
4190 {
4191     NMEM nmem = odr_extract_mem(c->odr_in);
4192     ZOOM_scanset scan;
4193
4194     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
4195         return;
4196     scan = c->tasks->u.scan.scan;
4197
4198     if (res->num_diagnostics > 0)
4199         set_SRU_error(c, &res->diagnostics[0]);
4200
4201     scan->scan_response = 0;
4202     scan->srw_scan_response = res;
4203     nmem_transfer(odr_getmem(scan->odr), nmem);
4204
4205     ZOOM_options_set_int(scan->options, "number", res->num_terms);
4206     nmem_destroy(nmem);
4207 }
4208 #endif
4209
4210 #if YAZ_HAVE_XML2
4211 static Z_GDU *get_HTTP_Request_url(ODR odr, const char *url)
4212 {
4213     Z_GDU *p = z_get_HTTP_Request(odr);
4214     const char *host = url;
4215     const char *cp0 = strstr(host, "://");
4216     const char *cp1 = 0;
4217     if (cp0)
4218         cp0 = cp0+3;
4219     else
4220         cp0 = host;
4221
4222     cp1 = strchr(cp0, '/');
4223     if (!cp1)
4224         cp1 = cp0 + strlen(cp0);
4225
4226     if (cp0 && cp1)
4227     {
4228         char *h = (char*) odr_malloc(odr, cp1 - cp0 + 1);
4229         memcpy (h, cp0, cp1 - cp0);
4230         h[cp1-cp0] = '\0';
4231         z_HTTP_header_add(odr, &p->u.HTTP_Request->headers, "Host", h);
4232     }
4233     p->u.HTTP_Request->path = odr_strdup(odr, *cp1 ? cp1 : "/");
4234     return p;
4235 }
4236
4237 static zoom_ret send_SRW_redirect(ZOOM_connection c, const char *uri,
4238                                   Z_HTTP_Response *cookie_hres)
4239 {
4240     struct Z_HTTP_Header *h;
4241     Z_GDU *gdu = get_HTTP_Request_url(c->odr_out, uri);
4242
4243     gdu->u.HTTP_Request->method = odr_strdup(c->odr_out, "GET");
4244     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers, "Accept",
4245                       "text/xml");
4246
4247     for (h = cookie_hres->headers; h; h = h->next)
4248     {
4249         if (!strcmp(h->name, "Set-Cookie"))
4250             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
4251                               "Cookie", h->value);
4252     }
4253     if (c->user && c->password)
4254     {
4255         z_HTTP_header_add_basic_auth(c->odr_out, &gdu->u.HTTP_Request->headers,
4256                                      c->user, c->password);
4257     }
4258     if (!z_GDU(c->odr_out, &gdu, 0, 0))
4259         return zoom_complete;
4260     if (c->odr_print)
4261         z_GDU(c->odr_print, &gdu, 0, 0);
4262     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
4263
4264     odr_reset(c->odr_out);
4265     return do_write(c);
4266 }
4267
4268 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
4269 {
4270     zoom_ret cret = zoom_complete;
4271     int ret = -1;
4272     const char *addinfo = 0;
4273     const char *connection_head = z_HTTP_header_lookup(hres->headers,
4274                                                        "Connection");
4275     const char *location;
4276
4277     ZOOM_connection_set_mask(c, 0);
4278     yaz_log(log_details, "%p handle_http", c);
4279
4280     if ((hres->code == 301 || hres->code == 302) && c->sru_mode == zoom_sru_get
4281         && (location = z_HTTP_header_lookup(hres->headers, "Location")))
4282     {
4283         c->no_redirects++;
4284         if (c->no_redirects > 10)
4285         {
4286             set_HTTP_error(c, hres->code, 0, 0);
4287             c->no_redirects = 0;
4288             do_close(c);
4289         }
4290         else
4291         {
4292             /* since redirect may change host we just reconnect. A smarter
4293                implementation might check whether it's the same server */
4294             do_connect_host(c, location, 0);
4295             send_SRW_redirect(c, location, hres);
4296             /* we're OK for now. Operation is not really complete */
4297             ret = 0;
4298             cret = zoom_pending;
4299         }
4300     }
4301     else
4302     {   /* not redirect (normal response) */
4303         if (!yaz_srw_check_content_type(hres))
4304             addinfo = "content-type";
4305         else
4306         {
4307             Z_SOAP *soap_package = 0;
4308             ODR o = c->odr_in;
4309             Z_SOAP_Handler soap_handlers[2] = {
4310                 {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
4311                 {0, 0, 0}
4312             };
4313             ret = z_soap_codec(o, &soap_package,
4314                                &hres->content_buf, &hres->content_len,
4315                                soap_handlers);
4316             if (!ret && soap_package->which == Z_SOAP_generic &&
4317                 soap_package->u.generic->no == 0)
4318             {
4319                 Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
4320
4321                 ZOOM_options_set(c->options, "sru_version", sr->srw_version);
4322                 ZOOM_options_setl(c->options, "sru_extra_response_data",
4323                                   sr->extraResponseData_buf, sr->extraResponseData_len);
4324                 if (sr->which == Z_SRW_searchRetrieve_response)
4325                     cret = handle_srw_response(c, sr->u.response);
4326                 else if (sr->which == Z_SRW_scan_response)
4327                     handle_srw_scan_response(c, sr->u.scan_response);
4328                 else
4329                     ret = -1;
4330             }
4331             else if (!ret && (soap_package->which == Z_SOAP_fault
4332                               || soap_package->which == Z_SOAP_error))
4333             {
4334                 set_HTTP_error(c, hres->code,
4335                                soap_package->u.fault->fault_code,
4336                                soap_package->u.fault->fault_string);
4337             }
4338             else
4339                 ret = -1;
4340         }
4341         if (ret == 0)
4342         {
4343             if (c->no_redirects) /* end of redirect. change hosts again */
4344                 do_close(c);
4345         }
4346         c->no_redirects = 0;
4347     }
4348     if (ret)
4349     {
4350         if (hres->code != 200)
4351             set_HTTP_error(c, hres->code, 0, 0);
4352         else
4353             set_ZOOM_error(c, ZOOM_ERROR_DECODE, addinfo);
4354         do_close(c);
4355     }
4356     if (cret == zoom_complete)
4357         ZOOM_connection_remove_task(c);
4358     if (!strcmp(hres->version, "1.0"))
4359     {
4360         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
4361         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
4362             do_close(c);
4363     }
4364     else
4365     {
4366         /* HTTP 1.1: only if no close we stay alive .. */
4367         if (connection_head && !strcmp(connection_head, "close"))
4368             do_close(c);
4369     }
4370 }
4371 #endif
4372
4373 static int do_read(ZOOM_connection c)
4374 {
4375     int r, more;
4376     ZOOM_Event event;
4377
4378     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
4379     ZOOM_connection_put_event(c, event);
4380
4381     r = cs_get(c->cs, &c->buf_in, &c->len_in);
4382     more = cs_more(c->cs);
4383     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
4384     if (r == 1)
4385         return 0;
4386     if (r <= 0)
4387     {
4388         if (!ZOOM_test_reconnect(c))
4389         {
4390             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4391             do_close(c);
4392         }
4393     }
4394     else
4395     {
4396         Z_GDU *gdu;
4397         ZOOM_Event event;
4398
4399         odr_reset(c->odr_in);
4400         odr_setbuf(c->odr_in, c->buf_in, r, 0);
4401         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
4402         ZOOM_connection_put_event(c, event);
4403
4404         if (!z_GDU(c->odr_in, &gdu, 0, 0))
4405         {
4406             int x;
4407             int err = odr_geterrorx(c->odr_in, &x);
4408             char msg[100];
4409             const char *element = odr_getelement(c->odr_in);
4410             yaz_snprintf(msg, sizeof(msg),
4411                     "ODR code %d:%d element=%s offset=%d",
4412                     err, x, element ? element : "<unknown>",
4413                     odr_offset(c->odr_in));
4414             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
4415             if (log_api)
4416             {
4417                 FILE *ber_file = yaz_log_file();
4418                 if (ber_file)
4419                     odr_dumpBER(ber_file, c->buf_in, r);
4420             }
4421             do_close(c);
4422         }
4423         else
4424         {
4425             if (c->odr_print)
4426                 z_GDU(c->odr_print, &gdu, 0, 0);
4427             if (gdu->which == Z_GDU_Z3950)
4428                 recv_apdu(c, gdu->u.z3950);
4429             else if (gdu->which == Z_GDU_HTTP_Response)
4430             {
4431 #if YAZ_HAVE_XML2
4432                 handle_http(c, gdu->u.HTTP_Response);
4433 #else
4434                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
4435                 do_close(c);
4436 #endif
4437             }
4438         }
4439         c->reconnect_ok = 0;
4440     }
4441     return 1;
4442 }
4443
4444 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
4445 {
4446     int r;
4447     ZOOM_Event event;
4448
4449     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
4450     ZOOM_connection_put_event(c, event);
4451
4452     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
4453     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
4454     {
4455         yaz_log(log_details, "%p do_write_ex write failed", c);
4456         if (ZOOM_test_reconnect(c))
4457         {
4458             return zoom_pending;
4459         }
4460         if (c->state == STATE_CONNECTING)
4461             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4462         else
4463             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4464         do_close(c);
4465         return zoom_complete;
4466     }
4467     else if (r == 1)
4468     {
4469         int mask = ZOOM_SELECT_EXCEPT;
4470         if (c->cs->io_pending & CS_WANT_WRITE)
4471             mask += ZOOM_SELECT_WRITE;
4472         if (c->cs->io_pending & CS_WANT_READ)
4473             mask += ZOOM_SELECT_READ;
4474         ZOOM_connection_set_mask(c, mask);
4475         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
4476                 c, c->mask);
4477     }
4478     else
4479     {
4480         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
4481         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
4482                 c, c->mask);
4483     }
4484     return zoom_pending;
4485 }
4486
4487 static zoom_ret do_write(ZOOM_connection c)
4488 {
4489     return do_write_ex(c, c->buf_out, c->len_out);
4490 }
4491
4492
4493 ZOOM_API(const char *)
4494     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
4495 {
4496     return ZOOM_options_get(c->options, key);
4497 }
4498
4499 ZOOM_API(const char *)
4500     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
4501 {
4502     return ZOOM_options_getl(c->options, key, lenp);
4503 }
4504
4505 ZOOM_API(void)
4506     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
4507                                const char *val)
4508 {
4509     ZOOM_options_set(c->options, key, val);
4510 }
4511
4512 ZOOM_API(void)
4513     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
4514                                 const char *val, int len)
4515 {
4516     ZOOM_options_setl(c->options, key, val, len);
4517 }
4518
4519 ZOOM_API(const char *)
4520     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
4521 {
4522     return ZOOM_options_get(r->options, key);
4523 }
4524
4525 ZOOM_API(void)
4526     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
4527                               const char *val)
4528 {
4529     ZOOM_options_set(r->options, key, val);
4530 }
4531
4532
4533 ZOOM_API(int)
4534     ZOOM_connection_errcode(ZOOM_connection c)
4535 {
4536     return ZOOM_connection_error(c, 0, 0);
4537 }
4538
4539 ZOOM_API(const char *)
4540     ZOOM_connection_errmsg(ZOOM_connection c)
4541 {
4542     const char *msg;
4543     ZOOM_connection_error(c, &msg, 0);
4544     return msg;
4545 }
4546
4547 ZOOM_API(const char *)
4548     ZOOM_connection_addinfo(ZOOM_connection c)
4549 {
4550     const char *addinfo;
4551     ZOOM_connection_error(c, 0, &addinfo);
4552     return addinfo;
4553 }
4554
4555 ZOOM_API(const char *)
4556     ZOOM_connection_diagset(ZOOM_connection c)
4557 {
4558     const char *diagset;
4559     ZOOM_connection_error_x(c, 0, 0, &diagset);
4560     return diagset;
4561 }
4562
4563 ZOOM_API(const char *)
4564     ZOOM_diag_str(int error)
4565 {
4566     switch (error)
4567     {
4568     case ZOOM_ERROR_NONE:
4569         return "No error";
4570     case ZOOM_ERROR_CONNECT:
4571         return "Connect failed";
4572     case ZOOM_ERROR_MEMORY:
4573         return "Out of memory";
4574     case ZOOM_ERROR_ENCODE:
4575         return "Encoding failed";
4576     case ZOOM_ERROR_DECODE:
4577         return "Decoding failed";
4578     case ZOOM_ERROR_CONNECTION_LOST:
4579         return "Connection lost";
4580     case ZOOM_ERROR_INIT:
4581         return "Init rejected";
4582     case ZOOM_ERROR_INTERNAL:
4583         return "Internal failure";
4584     case ZOOM_ERROR_TIMEOUT:
4585         return "Timeout";
4586     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
4587         return "Unsupported protocol";
4588     case ZOOM_ERROR_UNSUPPORTED_QUERY:
4589         return "Unsupported query type";
4590     case ZOOM_ERROR_INVALID_QUERY:
4591         return "Invalid query";
4592     case ZOOM_ERROR_CQL_PARSE:
4593         return "CQL parsing error";
4594     case ZOOM_ERROR_CQL_TRANSFORM:
4595         return "CQL transformation error";
4596     case ZOOM_ERROR_CCL_CONFIG:
4597         return "CCL configuration error";
4598     case ZOOM_ERROR_CCL_PARSE:
4599         return "CCL parsing error";
4600     default:
4601         return diagbib1_str(error);
4602     }
4603 }
4604
4605 ZOOM_API(int)
4606     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
4607                             const char **addinfo, const char **diagset)
4608 {
4609     int error = c->error;
4610     if (cp)
4611     {
4612         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
4613             *cp = ZOOM_diag_str(error);
4614         else if (!strcmp(c->diagset, "HTTP"))
4615             *cp = z_HTTP_errmsg(c->error);
4616         else if (!strcmp(c->diagset, "Bib-1"))
4617             *cp = ZOOM_diag_str(error);
4618         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
4619             *cp = yaz_diag_srw_str(c->error);
4620         else
4621             *cp = "Unknown error and diagnostic set";
4622     }
4623     if (addinfo)
4624         *addinfo = c->addinfo ? c->addinfo : "";
4625     if (diagset)
4626         *diagset = c->diagset ? c->diagset : "";
4627     return c->error;
4628 }
4629
4630 ZOOM_API(int)
4631     ZOOM_connection_error(ZOOM_connection c, const char **cp,
4632                           const char **addinfo)
4633 {
4634     return ZOOM_connection_error_x(c, cp, addinfo, 0);
4635 }
4636
4637 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
4638 {
4639     ZOOM_Event event = 0;
4640     int r = cs_look(c->cs);
4641     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
4642             c, mask, r);
4643
4644     if (r == CS_NONE)
4645     {
4646         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4647         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4648         do_close(c);
4649         ZOOM_connection_put_event(c, event);
4650     }
4651     else if (r == CS_CONNECT)
4652     {
4653         int ret = ret = cs_rcvconnect(c->cs);
4654         yaz_log(log_details, "%p ZOOM_connection_do_io "
4655                 "cs_rcvconnect returned %d", c, ret);
4656         if (ret == 1)
4657         {
4658             int mask = ZOOM_SELECT_EXCEPT;
4659             if (c->cs->io_pending & CS_WANT_WRITE)
4660                 mask += ZOOM_SELECT_WRITE;
4661             if (c->cs->io_pending & CS_WANT_READ)
4662                 mask += ZOOM_SELECT_READ;
4663             ZOOM_connection_set_mask(c, mask);
4664             event = ZOOM_Event_create(ZOOM_EVENT_NONE);
4665             ZOOM_connection_put_event(c, event);
4666         }
4667         else if (ret == 0)
4668         {
4669             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4670             ZOOM_connection_put_event(c, event);
4671             get_cert(c);
4672             if (c->proto == PROTO_Z3950)
4673                 ZOOM_connection_send_init(c);
4674             else
4675             {
4676                 /* no init request for SRW .. */
4677                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4678                 ZOOM_connection_remove_task(c);
4679                 ZOOM_connection_set_mask(c, 0);
4680                 ZOOM_connection_exec_task(c);
4681             }
4682             c->state = STATE_ESTABLISHED;
4683         }
4684         else
4685         {
4686             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4687             do_close(c);
4688         }
4689     }
4690     else
4691     {
4692         if (mask & ZOOM_SELECT_EXCEPT)
4693         {
4694             if (!ZOOM_test_reconnect(c))
4695             {
4696                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4697                 do_close(c);
4698             }
4699             return;
4700         }
4701         if (mask & ZOOM_SELECT_READ)
4702             do_read(c);
4703         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4704             do_write(c);
4705     }
4706 }
4707
4708 ZOOM_API(int)
4709     ZOOM_connection_last_event(ZOOM_connection cs)
4710 {
4711     if (!cs)
4712         return ZOOM_EVENT_NONE;
4713     return cs->last_event;
4714 }
4715
4716
4717 static void cql2pqf_wrbuf_puts(const char *buf, void *client_data)
4718 {
4719     WRBUF wrbuf = (WRBUF) client_data;
4720     wrbuf_puts(wrbuf, buf);
4721 }
4722
4723 /*
4724  * Returns an xmalloc()d string containing RPN that corresponds to the
4725  * CQL passed in.  On error, sets the Connection object's error state
4726  * and returns a null pointer.
4727  * ### We could cache CQL parser and/or transformer in Connection.
4728  */
4729 static char *cql2pqf(ZOOM_connection c, const char *cql)
4730 {
4731     CQL_parser parser;
4732     int error;
4733     const char *cqlfile;
4734     cql_transform_t trans;
4735     char *result = 0;
4736
4737     parser = cql_parser_create();
4738     if ((error = cql_parser_string(parser, cql)) != 0) {
4739         cql_parser_destroy(parser);
4740         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4741         return 0;
4742     }
4743
4744     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4745     if (cqlfile == 0)
4746     {
4747         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4748     }
4749     else if ((trans = cql_transform_open_fname(cqlfile)) == 0)
4750     {
4751         char buf[512];
4752         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4753                 cqlfile, strerror(errno));
4754         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4755     }
4756     else
4757     {
4758         WRBUF wrbuf_result = wrbuf_alloc();
4759         error = cql_transform(trans, cql_parser_result(parser),
4760                               cql2pqf_wrbuf_puts, wrbuf_result);
4761         if (error != 0) {
4762             char buf[512];
4763             const char *addinfo;
4764             error = cql_transform_error(trans, &addinfo);
4765             sprintf(buf, "%.200s (addinfo=%.200s)",
4766                     cql_strerror(error), addinfo);
4767             set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4768         }
4769         else
4770         {
4771             result = xstrdup(wrbuf_cstr(wrbuf_result));
4772         }
4773         cql_transform_close(trans);
4774         wrbuf_destroy(wrbuf_result);
4775     }
4776     cql_parser_destroy(parser);
4777     return result;
4778 }
4779
4780 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4781 {
4782     if (c->mask)
4783     {
4784         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4785         /* timeout and this connection was waiting */
4786         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4787         do_close(c);
4788         ZOOM_connection_put_event(c, event);
4789     }
4790     return 0;
4791 }
4792
4793 ZOOM_API(int)
4794     ZOOM_connection_process(ZOOM_connection c)
4795 {
4796     ZOOM_Event event;
4797     if (!c)
4798         return 0;
4799
4800     event = ZOOM_connection_get_event(c);
4801     if (event)
4802     {
4803         ZOOM_Event_destroy(event);
4804         return 1;
4805     }
4806     ZOOM_connection_exec_task(c);
4807     event = ZOOM_connection_get_event(c);
4808     if (event)
4809     {
4810         ZOOM_Event_destroy(event);
4811         return 1;
4812     }
4813     return 0;
4814 }
4815
4816 ZOOM_API(int)
4817     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
4818 {
4819     int i;
4820
4821     yaz_log(log_details, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
4822
4823     for (i = 0; i<no; i++)
4824     {
4825         ZOOM_connection c = cs[i];
4826
4827         if (c && ZOOM_connection_process(c))
4828             return i+1;
4829     }
4830     return 0;
4831 }
4832
4833 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4834 {
4835     if (c->mask && mask)
4836         ZOOM_connection_do_io(c, mask);
4837     return 0;
4838 }
4839
4840 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4841 {
4842     if (c->cs)
4843         return cs_fileno(c->cs);
4844     return -1;
4845 }
4846
4847 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4848 {
4849     c->mask = mask;
4850     if (!c->cs)
4851         return -1;
4852     return 0;
4853 }
4854
4855 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4856 {
4857     if (c->cs)
4858         return c->mask;
4859     return 0;
4860 }
4861
4862 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4863 {
4864     return ZOOM_options_get_int(c->options, "timeout", 30);
4865 }
4866
4867 ZOOM_API(void) ZOOM_connection_close(ZOOM_connection c)
4868 {
4869     do_close(c);
4870 }
4871
4872 /*
4873  * Local variables:
4874  * c-basic-offset: 4
4875  * c-file-style: "Stroustrup"
4876  * indent-tabs-mode: nil
4877  * End:
4878  * vim: shiftwidth=4 tabstop=8 expandtab
4879  */
4880