src/zoom-c.c

   1 /*
   2  * Copyright (C) 1995-2007, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.105 2007-01-09 13:56:48 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include "zoom-p.h"
  16
  17 #include <yaz/yaz-util.h>
  18 #include <yaz/xmalloc.h>
  19 #include <yaz/otherinfo.h>
  20 #include <yaz/log.h>
  21 #include <yaz/pquery.h>
  22 #include <yaz/marcdisp.h>
  23 #include <yaz/diagbib1.h>
  24 #include <yaz/charneg.h>
  25 #include <yaz/ill.h>
  26 #include <yaz/srw.h>
  27 #include <yaz/cql.h>
  28 #include <yaz/ccl.h>
  29
  30 static int log_api = 0;
  31 static int log_details = 0;
  32
  33 typedef enum {
  34     zoom_pending,
  35     zoom_complete
  36 } zoom_ret;
  37
  38 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
  39 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  40 static char *cql2pqf(ZOOM_connection c, const char *cql);
  41
  42 static void initlog(void)
  43 {
  44     static int log_level_initialized = 0;
  45     if (!log_level_initialized)
  46     {
  47         log_api = yaz_log_module_level("zoom");
  48         log_details = yaz_log_module_level("zoomdetails");
  49         log_level_initialized = 1;
  50     }
  51 }
  52
  53 static ZOOM_Event ZOOM_Event_create(int kind)
  54 {
  55     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  56     event->kind = kind;
  57     event->next = 0;
  58     event->prev = 0;
  59     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
  60     return event;
  61 }
  62
  63 static void ZOOM_Event_destroy(ZOOM_Event event)
  64 {
  65     xfree(event);
  66 }
  67
  68 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
  69 {
  70     if (c->m_queue_back)
  71     {
  72         c->m_queue_back->prev = event;
  73         assert(c->m_queue_front);
  74     }
  75     else
  76     {
  77         assert(!c->m_queue_front);
  78         c->m_queue_front = event;
  79     }
  80     event->next = c->m_queue_back;
  81     event->prev = 0;
  82     c->m_queue_back = event;
  83 }
  84
  85 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
  86 {
  87     ZOOM_Event event = c->m_queue_front;
  88     if (!event)
  89     {
  90         c->last_event = ZOOM_EVENT_NONE;
  91         return 0;
  92     }
  93     assert(c->m_queue_back);
  94     c->m_queue_front = event->prev;
  95     if (c->m_queue_front)
  96     {
  97         assert(c->m_queue_back);
  98         c->m_queue_front->next = 0;
  99     }
 100     else
 101         c->m_queue_back = 0;
 102     c->last_event = event->kind;
 103     return event;
 104 }
 105
 106
 107 static void set_dset_error(ZOOM_connection c, int error,
 108                            const char *dset,
 109                            const char *addinfo, const char *addinfo2)
 110 {
 111     char *cp;
 112
 113     xfree(c->addinfo);
 114     c->addinfo = 0;
 115     c->error = error;
 116     if (!c->diagset || strcmp(dset, c->diagset))
 117     {
 118         xfree(c->diagset);
 119         c->diagset = xstrdup(dset);
 120         /* remove integer part from SRW diagset .. */
 121         if ((cp = strrchr(c->diagset, '/')))
 122             *cp = '\0';
 123     }
 124     if (addinfo && addinfo2)
 125     {
 126         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 127         strcpy(c->addinfo, addinfo);
 128         strcat(c->addinfo, addinfo2);
 129     }
 130     else if (addinfo)
 131         c->addinfo = xstrdup(addinfo);
 132     if (error)
 133         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 134                 c, c->host_port ? c->host_port : "<>", dset, error,
 135                 addinfo ? addinfo : "",
 136                 addinfo2 ? addinfo2 : "");
 137 }
 138
 139 #if YAZ_HAVE_XML2
 140 static void set_HTTP_error(ZOOM_connection c, int error,
 141                            const char *addinfo, const char *addinfo2)
 142 {
 143     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 144 }
 145 #endif
 146
 147 static void set_ZOOM_error(ZOOM_connection c, int error,
 148                            const char *addinfo)
 149 {
 150     set_dset_error(c, error, "ZOOM", addinfo, 0);
 151 }
 152
 153 static void clear_error(ZOOM_connection c)
 154 {
 155     /*
 156      * If an error is tied to an operation then it's ok to clear: for
 157      * example, a diagnostic returned from a search is cleared by a
 158      * subsequent search.  However, problems such as Connection Lost
 159      * or Init Refused are not cleared, because they are not
 160      * recoverable: doing another search doesn't help.
 161      */
 162     switch (c->error)
 163     {
 164     case ZOOM_ERROR_CONNECT:
 165     case ZOOM_ERROR_MEMORY:
 166     case ZOOM_ERROR_DECODE:
 167     case ZOOM_ERROR_CONNECTION_LOST:
 168     case ZOOM_ERROR_INIT:
 169     case ZOOM_ERROR_INTERNAL:
 170     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 171         break;
 172     default:
 173         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 174     }
 175 }
 176
 177 void ZOOM_connection_show_task(ZOOM_task task)
 178 {
 179     switch(task->which)
 180     {
 181     case ZOOM_TASK_SEARCH:
 182         yaz_log(YLOG_LOG, "search p=%p", task);
 183         break;
 184     case ZOOM_TASK_RETRIEVE:
 185         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 186         break;
 187     case ZOOM_TASK_CONNECT:
 188         yaz_log(YLOG_LOG, "connect p=%p", task);
 189         break;
 190     case ZOOM_TASK_SCAN:
 191         yaz_log(YLOG_LOG, "scant p=%p", task);
 192         break;
 193     }
 194 }
 195
 196 void ZOOM_connection_show_tasks(ZOOM_connection c)
 197 {
 198     ZOOM_task task;
 199     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 200     for (task = c->tasks; task; task = task->next)
 201         ZOOM_connection_show_task(task);
 202 }
 203
 204 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 205 {
 206     ZOOM_task *taskp = &c->tasks;
 207     while (*taskp)
 208         taskp = &(*taskp)->next;
 209     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 210     (*taskp)->running = 0;
 211     (*taskp)->which = which;
 212     (*taskp)->next = 0;
 213     clear_error(c);
 214     return *taskp;
 215 }
 216
 217 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 218 {
 219     return c->tasks ? 0 : 1;
 220 }
 221
 222 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 223 {
 224     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 225
 226     task->next = c->tasks;
 227     c->tasks = task;
 228
 229     task->running = 0;
 230     task->which = which;
 231     clear_error(c);
 232     return task;
 233 }
 234
 235 void ZOOM_connection_remove_task(ZOOM_connection c)
 236 {
 237     ZOOM_task task = c->tasks;
 238
 239     if (task)
 240     {
 241         c->tasks = task->next;
 242         switch (task->which)
 243         {
 244         case ZOOM_TASK_SEARCH:
 245             ZOOM_resultset_destroy(task->u.search.resultset);
 246             xfree(task->u.search.syntax);
 247             xfree(task->u.search.elementSetName);
 248             break;
 249         case ZOOM_TASK_RETRIEVE:
 250             ZOOM_resultset_destroy(task->u.retrieve.resultset);
 251             xfree(task->u.retrieve.syntax);
 252             xfree(task->u.retrieve.elementSetName);
 253             break;
 254         case ZOOM_TASK_CONNECT:
 255             break;
 256         case ZOOM_TASK_SCAN:
 257             ZOOM_scanset_destroy(task->u.scan.scan);
 258             break;
 259         case ZOOM_TASK_PACKAGE:
 260             ZOOM_package_destroy(task->u.package);
 261             break;
 262         case ZOOM_TASK_SORT:
 263             ZOOM_resultset_destroy(task->u.sort.resultset);
 264             ZOOM_query_destroy(task->u.sort.q);
 265             break;
 266         default:
 267             assert(0);
 268         }
 269         xfree(task);
 270
 271         if (!c->tasks)
 272         {
 273             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 274             ZOOM_connection_put_event(c, event);
 275         }
 276     }
 277 }
 278
 279 static int ZOOM_connection_exec_task(ZOOM_connection c);
 280
 281 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 282 {
 283     while (c->tasks)
 284         ZOOM_connection_remove_task(c);
 285 }
 286
 287 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 288                                        const char *syntax,
 289                                        const char *elementSetName);
 290
 291 ZOOM_API(ZOOM_connection)
 292     ZOOM_connection_create(ZOOM_options options)
 293 {
 294     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 295
 296     initlog();
 297
 298     yaz_log(log_api, "%p ZOOM_connection_create", c);
 299
 300     c->proto = PROTO_Z3950;
 301     c->cs = 0;
 302     ZOOM_connection_set_mask(c, 0);
 303     c->reconnect_ok = 0;
 304     c->state = STATE_IDLE;
 305     c->addinfo = 0;
 306     c->diagset = 0;
 307     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 308     c->buf_in = 0;
 309     c->len_in = 0;
 310     c->buf_out = 0;
 311     c->len_out = 0;
 312     c->resultsets = 0;
 313
 314     c->options = ZOOM_options_create_with_parent(options);
 315
 316     c->host_port = 0;
 317     c->path = 0;
 318     c->proxy = 0;
 319
 320     c->charset = c->lang = 0;
 321
 322     c->cookie_out = 0;
 323     c->cookie_in = 0;
 324     c->client_IP = 0;
 325     c->tasks = 0;
 326
 327     c->odr_in = odr_createmem(ODR_DECODE);
 328     c->odr_out = odr_createmem(ODR_ENCODE);
 329
 330     c->async = 0;
 331     c->support_named_resultsets = 0;
 332     c->last_event = ZOOM_EVENT_NONE;
 333
 334     c->m_queue_front = 0;
 335     c->m_queue_back = 0;
 336     return c;
 337 }
 338
 339
 340 /* set database names. Take local databases (if set); otherwise
 341    take databases given in ZURL (if set); otherwise use Default */
 342 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 343                                 int *num, ODR odr)
 344 {
 345     char **databaseNames;
 346     const char *cp = ZOOM_options_get(options, "databaseName");
 347
 348     if ((!cp || !*cp) && con->host_port)
 349     {
 350         if (strncmp(con->host_port, "unix:", 5) == 0)
 351             cp = strchr(con->host_port+5, ':');
 352         else
 353             cp = strchr(con->host_port, '/');
 354         if (cp)
 355             cp++;
 356     }
 357     if (!cp)
 358         cp = "Default";
 359     nmem_strsplit(odr->mem, "+", cp,  &databaseNames, num);
 360     return databaseNames;
 361 }
 362
 363 ZOOM_API(ZOOM_connection)
 364     ZOOM_connection_new(const char *host, int portnum)
 365 {
 366     ZOOM_connection c = ZOOM_connection_create(0);
 367
 368     ZOOM_connection_connect(c, host, portnum);
 369     return c;
 370 }
 371
 372 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 373 {
 374     if (!s || !*s)
 375         return zoom_sru_soap;
 376     if (!yaz_matchstr(s, "soap"))
 377         return zoom_sru_soap;
 378     else if (!yaz_matchstr(s, "get"))
 379         return zoom_sru_get;
 380     else if (!yaz_matchstr(s, "post"))
 381         return zoom_sru_post;
 382     return zoom_sru_error;
 383 }
 384
 385 ZOOM_API(void)
 386     ZOOM_connection_connect(ZOOM_connection c,
 387                             const char *host, int portnum)
 388 {
 389     const char *val;
 390     ZOOM_task task;
 391
 392     initlog();
 393
 394     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 395             c, host, portnum);
 396
 397     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 398     ZOOM_connection_remove_tasks(c);
 399
 400     if (c->cs)
 401     {
 402         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 403         c->reconnect_ok = 1;
 404         return;
 405     }
 406     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 407     xfree(c->proxy);
 408     val = ZOOM_options_get(c->options, "proxy");
 409     if (val && *val)
 410     {
 411         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 412         c->proxy = xstrdup(val);
 413     }
 414     else
 415         c->proxy = 0;
 416
 417     xfree(c->charset);
 418     val = ZOOM_options_get(c->options, "charset");
 419     if (val && *val)
 420     {
 421         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 422         c->charset = xstrdup(val);
 423     }
 424     else
 425         c->charset = 0;
 426
 427     xfree(c->lang);
 428     val = ZOOM_options_get(c->options, "lang");
 429     if (val && *val)
 430     {
 431         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 432         c->lang = xstrdup(val);
 433     }
 434     else
 435         c->lang = 0;
 436
 437     xfree(c->host_port);
 438     if (portnum)
 439     {
 440         char hostn[128];
 441         sprintf(hostn, "%.80s:%d", host, portnum);
 442         c->host_port = xstrdup(hostn);
 443     }
 444     else
 445         c->host_port = xstrdup(host);
 446
 447     {
 448         /*
 449          * If the "<scheme>:" part of the host string is preceded by one
 450          * or more comma-separated <name>=<value> pairs, these are taken
 451          * to be options to be set on the connection object.  Among other
 452          * applications, this facility can be used to embed authentication
 453          * in a host string:
 454          *          user=admin,password=secret,tcp:localhost:9999
 455          */
 456         char *remainder = c->host_port;
 457         char *pcolon = strchr(remainder, ':');
 458         char *pcomma;
 459         char *pequals;
 460         while ((pcomma = strchr(remainder, ',')) != 0 &&
 461                (pcolon == 0 || pcomma < pcolon)) {
 462             *pcomma = '\0';
 463             if ((pequals = strchr(remainder, '=')) != 0) {
 464                 *pequals = '\0';
 465                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 466                 ZOOM_connection_option_set(c, remainder, pequals+1);
 467             }
 468             remainder = pcomma+1;
 469         }
 470
 471         if (remainder != c->host_port) {
 472             xfree(c->host_port);
 473             c->host_port = xstrdup(remainder);
 474             /*printf("# reset hp='%s'\n", remainder);*/
 475         }
 476     }
 477
 478     val = ZOOM_options_get(c->options, "sru");
 479     c->sru_mode = get_sru_mode_from_string(val);
 480
 481     ZOOM_options_set(c->options, "host", c->host_port);
 482
 483     val = ZOOM_options_get(c->options, "cookie");
 484     if (val && *val)
 485     {
 486         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 487         c->cookie_out = xstrdup(val);
 488     }
 489
 490     val = ZOOM_options_get(c->options, "clientIP");
 491     if (val && *val)
 492     {
 493         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 494                 c, val);
 495         c->client_IP = xstrdup(val);
 496     }
 497
 498     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 499     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 500
 501     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 502
 503     if (!c->async)
 504     {
 505         while (ZOOM_event(1, &c))
 506             ;
 507     }
 508 }
 509
 510 ZOOM_API(ZOOM_query)
 511     ZOOM_query_create(void)
 512 {
 513     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 514
 515     yaz_log(log_details, "%p ZOOM_query_create", s);
 516     s->refcount = 1;
 517     s->z_query = 0;
 518     s->sort_spec = 0;
 519     s->odr = odr_createmem(ODR_ENCODE);
 520     s->query_string = 0;
 521
 522     return s;
 523 }
 524
 525 ZOOM_API(void)
 526     ZOOM_query_destroy(ZOOM_query s)
 527 {
 528     if (!s)
 529         return;
 530
 531     (s->refcount)--;
 532     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 533     if (s->refcount == 0)
 534     {
 535         odr_destroy(s->odr);
 536         xfree(s);
 537     }
 538 }
 539
 540 ZOOM_API(int)
 541     ZOOM_query_prefix(ZOOM_query s, const char *str)
 542 {
 543     s->query_string = odr_strdup(s->odr, str);
 544     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 545     s->z_query->which = Z_Query_type_1;
 546     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 547     if (!s->z_query->u.type_1)
 548     {
 549         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 550         s->z_query = 0;
 551         return -1;
 552     }
 553     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 554     return 0;
 555 }
 556
 557 ZOOM_API(int)
 558     ZOOM_query_cql(ZOOM_query s, const char *str)
 559 {
 560     Z_External *ext;
 561
 562     s->query_string = odr_strdup(s->odr, str);
 563
 564     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 565     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 566     ext->indirect_reference = 0;
 567     ext->descriptor = 0;
 568     ext->which = Z_External_CQL;
 569     ext->u.cql = s->query_string;
 570
 571     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 572     s->z_query->which = Z_Query_type_104;
 573     s->z_query->u.type_104 =  ext;
 574
 575     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 576
 577     return 0;
 578 }
 579
 580 /*
 581  * Translate the CQL string client-side into RPN which is passed to
 582  * the server.  This is useful for server's that don't themselves
 583  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 584  * only as a place to stash diagnostics if compilation fails; if this
 585  * information is not needed, a null pointer may be used.
 586  */
 587 ZOOM_API(int)
 588     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 589 {
 590     char *rpn;
 591     int ret;
 592     ZOOM_connection freeme = 0;
 593
 594     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 595     if (conn == 0)
 596         conn = freeme = ZOOM_connection_create(0);
 597
 598     rpn = cql2pqf(conn, str);
 599     if (freeme != 0)
 600         ZOOM_connection_destroy(freeme);
 601     if (rpn == 0)
 602         return -1;
 603
 604     ret = ZOOM_query_prefix(s, rpn);
 605     xfree(rpn);
 606     return ret;
 607 }
 608
 609 /*
 610  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 611  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 612  * to the server, as the YAZ GFS doesn't know how to handle this.
 613  */
 614 ZOOM_API(int)
 615     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 616                        int *ccl_error, const char **error_string,
 617                        int *error_pos)
 618 {
 619     int ret;
 620     struct ccl_rpn_node *rpn;
 621     CCL_bibset bibset = ccl_qual_mk();
 622
 623     if (config)
 624         ccl_qual_buf(bibset, config);
 625
 626     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 627     if (!rpn)
 628     {
 629         *error_string = ccl_err_msg(*ccl_error);
 630         ret = -1;
 631     }
 632     else
 633     {
 634         WRBUF wr = wrbuf_alloc();
 635         ccl_pquery(wr, rpn);
 636         ccl_rpn_delete(rpn);
 637         ret = ZOOM_query_prefix(s, wrbuf_buf(wr));
 638         wrbuf_free(wr, 1);
 639     }
 640     ccl_qual_rm(&bibset);
 641     return ret;
 642 }
 643
 644 ZOOM_API(int)
 645     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 646 {
 647     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 648     if (!s->sort_spec)
 649     {
 650         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 651                 s, criteria);
 652         return -1;
 653     }
 654     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 655     return 0;
 656 }
 657
 658 static zoom_ret do_write(ZOOM_connection c);
 659
 660 ZOOM_API(void)
 661     ZOOM_connection_destroy(ZOOM_connection c)
 662 {
 663     ZOOM_resultset r;
 664     if (!c)
 665         return;
 666     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 667     if (c->cs)
 668         cs_close(c->cs);
 669     for (r = c->resultsets; r; r = r->next)
 670         r->connection = 0;
 671
 672     xfree(c->buf_in);
 673     xfree(c->addinfo);
 674     xfree(c->diagset);
 675     odr_destroy(c->odr_in);
 676     odr_destroy(c->odr_out);
 677     ZOOM_options_destroy(c->options);
 678     ZOOM_connection_remove_tasks(c);
 679     xfree(c->host_port);
 680     xfree(c->path);
 681     xfree(c->proxy);
 682     xfree(c->charset);
 683     xfree(c->lang);
 684     xfree(c->cookie_out);
 685     xfree(c->cookie_in);
 686     xfree(c->client_IP);
 687     xfree(c);
 688 }
 689
 690 void ZOOM_resultset_addref(ZOOM_resultset r)
 691 {
 692     if (r)
 693     {
 694         (r->refcount)++;
 695         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 696                 r, r->refcount);
 697     }
 698 }
 699
 700 ZOOM_resultset ZOOM_resultset_create(void)
 701 {
 702     int i;
 703     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 704
 705     initlog();
 706
 707     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 708     r->refcount = 1;
 709     r->size = 0;
 710     r->odr = odr_createmem(ODR_ENCODE);
 711     r->piggyback = 1;
 712     r->setname = 0;
 713     r->schema = 0;
 714     r->step = 0;
 715     for (i = 0; i<RECORD_HASH_SIZE; i++)
 716         r->record_hash[i] = 0;
 717     r->r_sort_spec = 0;
 718     r->query = 0;
 719     r->connection = 0;
 720     r->next = 0;
 721     r->databaseNames = 0;
 722     r->num_databaseNames = 0;
 723     return r;
 724 }
 725
 726 ZOOM_API(ZOOM_resultset)
 727     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 728 {
 729     ZOOM_resultset r;
 730     ZOOM_query s = ZOOM_query_create();
 731
 732     ZOOM_query_prefix(s, q);
 733
 734     r = ZOOM_connection_search(c, s);
 735     ZOOM_query_destroy(s);
 736     return r;
 737 }
 738
 739 ZOOM_API(ZOOM_resultset)
 740     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 741 {
 742     ZOOM_resultset r = ZOOM_resultset_create();
 743     ZOOM_task task;
 744     const char *cp;
 745     int start, count;
 746     const char *syntax, *elementSetName;
 747
 748     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 749     r->r_sort_spec = q->sort_spec;
 750     r->query = q;
 751
 752     r->options = ZOOM_options_create_with_parent(c->options);
 753
 754     start = ZOOM_options_get_int(r->options, "start", 0);
 755     count = ZOOM_options_get_int(r->options, "count", 0);
 756     {
 757         /* If "presentChunk" is defined use that; otherwise "step" */
 758         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 759         r->step = ZOOM_options_get_int(r->options,
 760                                        (cp != 0 ? "presentChunk": "step"), 0);
 761     }
 762     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 763     cp = ZOOM_options_get(r->options, "setname");
 764     if (cp)
 765         r->setname = xstrdup(cp);
 766     cp = ZOOM_options_get(r->options, "schema");
 767     if (cp)
 768         r->schema = xstrdup(cp);
 769
 770     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 771                                          r->odr);
 772
 773     r->connection = c;
 774
 775     r->next = c->resultsets;
 776     c->resultsets = r;
 777
 778     if (c->host_port && c->proto == PROTO_HTTP)
 779     {
 780         if (!c->cs)
 781         {
 782             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 783             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 784         }
 785         else
 786         {
 787             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 788             c->reconnect_ok = 1;
 789         }
 790     }
 791
 792     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 793     task->u.search.resultset = r;
 794     task->u.search.start = start;
 795     task->u.search.count = count;
 796
 797     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 798     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 799     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 800     task->u.search.elementSetName = elementSetName
 801         ? xstrdup(elementSetName) : 0;
 802
 803     ZOOM_resultset_addref(r);
 804
 805     (q->refcount)++;
 806
 807     if (!c->async)
 808     {
 809         while (ZOOM_event(1, &c))
 810             ;
 811     }
 812     return r;
 813 }
 814
 815 /*
 816  * This is the old result-set sorting API, which is maintained only
 817  * for the sake of binary compatibility.  There is no reason ever to
 818  * use this rather than ZOOM_resultset_sort1().
 819  */
 820 ZOOM_API(void)
 821     ZOOM_resultset_sort(ZOOM_resultset r,
 822                         const char *sort_type, const char *sort_spec)
 823 {
 824     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 825 }
 826
 827 ZOOM_API(int)
 828     ZOOM_resultset_sort1(ZOOM_resultset r,
 829                          const char *sort_type, const char *sort_spec)
 830 {
 831     ZOOM_connection c = r->connection;
 832     ZOOM_task task;
 833     ZOOM_query newq;
 834
 835     newq = ZOOM_query_create();
 836     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 837         return -1;
 838
 839     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 840             r, r, sort_type, sort_spec);
 841     if (!c)
 842         return 0;
 843
 844     if (c->host_port && c->proto == PROTO_HTTP)
 845     {
 846         if (!c->cs)
 847         {
 848             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 849             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 850         }
 851         else
 852         {
 853             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 854                     r);
 855             c->reconnect_ok = 1;
 856         }
 857     }
 858
 859     ZOOM_resultset_cache_reset(r);
 860     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 861     task->u.sort.resultset = r;
 862     task->u.sort.q = newq;
 863
 864     ZOOM_resultset_addref(r);
 865
 866     if (!c->async)
 867     {
 868         while (ZOOM_event(1, &c))
 869             ;
 870     }
 871
 872     return 0;
 873 }
 874
 875 ZOOM_API(void)
 876     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 877 {
 878     int i;
 879     for (i = 0; i<RECORD_HASH_SIZE; i++)
 880     {
 881         ZOOM_record_cache rc;
 882         for (rc = r->record_hash[i]; rc; rc = rc->next)
 883         {
 884             if (rc->rec.wrbuf_marc)
 885                 wrbuf_free(rc->rec.wrbuf_marc, 1);
 886             if (rc->rec.wrbuf_iconv)
 887                 wrbuf_free(rc->rec.wrbuf_iconv, 1);
 888             if (rc->rec.wrbuf_opac)
 889                 wrbuf_free(rc->rec.wrbuf_opac, 1);
 890         }
 891         r->record_hash[i] = 0;
 892     }
 893 }
 894
 895 ZOOM_API(void)
 896     ZOOM_resultset_destroy(ZOOM_resultset r)
 897 {
 898     if (!r)
 899         return;
 900     (r->refcount)--;
 901     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 902             r, r, r->refcount);
 903     if (r->refcount == 0)
 904     {
 905         ZOOM_resultset_cache_reset(r);
 906
 907         if (r->connection)
 908         {
 909             /* remove ourselves from the resultsets in connection */
 910             ZOOM_resultset *rp = &r->connection->resultsets;
 911             while (1)
 912             {
 913                 assert(*rp);   /* we must be in this list!! */
 914                 if (*rp == r)
 915                 {   /* OK, we're here - take us out of it */
 916                     *rp = (*rp)->next;
 917                     break;
 918                 }
 919                 rp = &(*rp)->next;
 920             }
 921         }
 922         ZOOM_query_destroy(r->query);
 923         ZOOM_options_destroy(r->options);
 924         odr_destroy(r->odr);
 925         xfree(r->setname);
 926         xfree(r->schema);
 927         xfree(r);
 928     }
 929 }
 930
 931 ZOOM_API(size_t)
 932     ZOOM_resultset_size(ZOOM_resultset r)
 933 {
 934     yaz_log(log_details, "ZOOM_resultset_size r=%p count=%d",
 935             r, r->size);
 936     return r->size;
 937 }
 938
 939 static void do_close(ZOOM_connection c)
 940 {
 941     if (c->cs)
 942         cs_close(c->cs);
 943     c->cs = 0;
 944     ZOOM_connection_set_mask(c, 0);
 945     c->state = STATE_IDLE;
 946 }
 947
 948 static int ZOOM_test_reconnect(ZOOM_connection c)
 949 {
 950     if (!c->reconnect_ok)
 951         return 0;
 952     do_close(c);
 953     c->reconnect_ok = 0;
 954     c->tasks->running = 0;
 955     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
 956     return 1;
 957 }
 958
 959 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
 960                                     int force_sync, int start, int count)
 961 {
 962     ZOOM_task task;
 963     ZOOM_connection c;
 964     const char *cp;
 965     const char *syntax, *elementSetName;
 966
 967     if (!r)
 968         return;
 969     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 970             " count=%d", r, force_sync, start, count);
 971     c = r->connection;
 972     if (!c)
 973         return;
 974
 975     if (c->host_port && c->proto == PROTO_HTTP)
 976     {
 977         if (!c->cs)
 978         {
 979             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 980             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 981         }
 982         else
 983         {
 984             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 985                     "reconnect", r);
 986             c->reconnect_ok = 1;
 987         }
 988     }
 989     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
 990     task->u.retrieve.resultset = r;
 991     task->u.retrieve.start = start;
 992     task->u.retrieve.count = count;
 993
 994     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 995     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
 996     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 997     task->u.retrieve.elementSetName = elementSetName
 998         ? xstrdup(elementSetName) : 0;
 999
1000     cp = ZOOM_options_get(r->options, "schema");
1001     if (cp)
1002     {
1003         if (!r->schema || strcmp(r->schema, cp))
1004         {
1005             xfree(r->schema);
1006             r->schema = xstrdup(cp);
1007         }
1008     }
1009
1010     ZOOM_resultset_addref(r);
1011
1012     if (!r->connection->async || force_sync)
1013         while (r->connection && ZOOM_event(1, &r->connection))
1014             ;
1015 }
1016
1017 ZOOM_API(void)
1018     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1019                            size_t start, size_t count)
1020 {
1021     int force_present = 0;
1022
1023     if (!r)
1024         return ;
1025     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1026             r, r, (long) start, (long) count);
1027     if (count && recs)
1028         force_present = 1;
1029     ZOOM_resultset_retrieve(r, force_present, start, count);
1030     if (force_present)
1031     {
1032         size_t i;
1033         for (i = 0; i< count; i++)
1034             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1035     }
1036 }
1037
1038 static void get_cert(ZOOM_connection c)
1039 {
1040     char *cert_buf;
1041     int cert_len;
1042
1043     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1044     {
1045         ZOOM_connection_option_setl(c, "sslPeerCert",
1046                                     cert_buf, cert_len);
1047         xfree(cert_buf);
1048     }
1049 }
1050
1051 static zoom_ret do_connect(ZOOM_connection c)
1052 {
1053     void *add;
1054     const char *effective_host;
1055
1056     if (c->proxy)
1057         effective_host = c->proxy;
1058     else
1059         effective_host = c->host_port;
1060
1061     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1062
1063     if (c->cs)
1064         cs_close(c->cs);
1065     c->cs = cs_create_host(effective_host, 0, &add);
1066
1067     if (c->cs && c->cs->protocol == PROTO_HTTP)
1068     {
1069 #if YAZ_HAVE_XML2
1070         const char *path = 0;
1071
1072         c->proto = PROTO_HTTP;
1073         cs_get_host_args(c->host_port, &path);
1074         xfree(c->path);
1075         c->path = (char*) xmalloc(strlen(path)+2);
1076         c->path[0] = '/';
1077         strcpy(c->path+1, path);
1078 #else
1079         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1080         do_close(c);
1081         return zoom_complete;
1082 #endif
1083     }
1084     if (c->cs)
1085     {
1086         int ret = cs_connect(c->cs, add);
1087         if (ret == 0)
1088         {
1089             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1090             ZOOM_connection_put_event(c, event);
1091             get_cert(c);
1092             if (c->proto == PROTO_Z3950)
1093                 ZOOM_connection_send_init(c);
1094             else
1095             {
1096                 /* no init request for SRW .. */
1097                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1098                 ZOOM_connection_remove_task(c);
1099                 ZOOM_connection_set_mask(c, 0);
1100                 ZOOM_connection_exec_task(c);
1101             }
1102             c->state = STATE_ESTABLISHED;
1103             return zoom_pending;
1104         }
1105         else if (ret > 0)
1106         {
1107             int mask = ZOOM_SELECT_EXCEPT;
1108             if (c->cs->io_pending & CS_WANT_WRITE)
1109                 mask += ZOOM_SELECT_WRITE;
1110             if (c->cs->io_pending & CS_WANT_READ)
1111                 mask += ZOOM_SELECT_READ;
1112             ZOOM_connection_set_mask(c, mask);
1113             c->state = STATE_CONNECTING;
1114             return zoom_pending;
1115         }
1116     }
1117     c->state = STATE_IDLE;
1118     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1119     return zoom_complete;
1120 }
1121
1122 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1123 {
1124     int i;
1125     for (i = 0; i<200; i++)
1126     {
1127         size_t len;
1128         Z_OtherInformation **oi;
1129         char buf[80];
1130         const char *val;
1131         const char *cp;
1132         int oidval;
1133
1134         sprintf(buf, "otherInfo%d", i);
1135         val = ZOOM_options_get(c->options, buf);
1136         if (!val)
1137             break;
1138         cp = strchr(val, ':');
1139         if (!cp)
1140             continue;
1141         len = cp - val;
1142         if (len >= sizeof(buf))
1143             len = sizeof(buf)-1;
1144         memcpy(buf, val, len);
1145         buf[len] = '\0';
1146         oidval = oid_getvalbyname(buf);
1147         if (oidval == VAL_NONE)
1148             continue;
1149
1150         yaz_oi_APDU(a, &oi);
1151         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1152     }
1153 }
1154
1155 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1156 {
1157     assert(a);
1158     if (c->cookie_out)
1159     {
1160         Z_OtherInformation **oi;
1161         yaz_oi_APDU(a, &oi);
1162         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1163     }
1164     if (c->client_IP)
1165     {
1166         Z_OtherInformation **oi;
1167         yaz_oi_APDU(a, &oi);
1168         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1169     }
1170     otherInfo_attach(c, a, out);
1171     if (!z_APDU(out, &a, 0, 0))
1172     {
1173         FILE *outf = fopen("/tmp/apdu.txt", "a");
1174         if (a && outf)
1175         {
1176             ODR odr_pr = odr_createmem(ODR_PRINT);
1177             fprintf(outf, "a=%p\n", a);
1178             odr_setprint(odr_pr, outf);
1179             z_APDU(odr_pr, &a, 0, 0);
1180             odr_destroy(odr_pr);
1181         }
1182         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1183         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1184         odr_reset(out);
1185         return -1;
1186     }
1187     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1188     return 0;
1189 }
1190
1191 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1192 {
1193     ZOOM_Event event;
1194     assert(a);
1195     if (encode_APDU(c, a, c->odr_out))
1196         return zoom_complete;
1197     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1198     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1199     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1200     ZOOM_connection_put_event(c, event);
1201     odr_reset(c->odr_out);
1202     return do_write(c);
1203 }
1204
1205 /* returns 1 if PDU was sent OK (still pending )
1206    0 if PDU was not sent OK (nothing to wait for)
1207 */
1208
1209 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1210 {
1211     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1212     Z_InitRequest *ireq = apdu->u.initRequest;
1213     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1214         odr_malloc(c->odr_out, sizeof(*auth));
1215     const char *auth_groupId = ZOOM_options_get(c->options, "group");
1216     const char *auth_userId = ZOOM_options_get(c->options, "user");
1217     const char *auth_password = ZOOM_options_get(c->options, "password");
1218     char *version;
1219
1220     /* support the pass for backwards compatibility */
1221     if (!auth_password)
1222         auth_password = ZOOM_options_get(c->options, "pass");
1223
1224     ODR_MASK_SET(ireq->options, Z_Options_search);
1225     ODR_MASK_SET(ireq->options, Z_Options_present);
1226     ODR_MASK_SET(ireq->options, Z_Options_scan);
1227     ODR_MASK_SET(ireq->options, Z_Options_sort);
1228     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1229     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1230
1231     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1232     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1233     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1234
1235     /* Index Data's Z39.50 Implementor Id is 81 */
1236     ireq->implementationId =
1237         odr_prepend(c->odr_out,
1238                     ZOOM_options_get(c->options, "implementationId"),
1239                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1240
1241     ireq->implementationName =
1242         odr_prepend(c->odr_out,
1243                     ZOOM_options_get(c->options, "implementationName"),
1244                     odr_prepend(c->odr_out, "ZOOM-C",
1245                                 ireq->implementationName));
1246
1247     version = odr_strdup(c->odr_out, "$Revision: 1.105 $");
1248     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1249         version[strlen(version)-2] = '\0';
1250     ireq->implementationVersion =
1251         odr_prepend(c->odr_out,
1252                     ZOOM_options_get(c->options, "implementationVersion"),
1253                     odr_prepend(c->odr_out, &version[11],
1254                                 ireq->implementationVersion));
1255
1256     *ireq->maximumRecordSize =
1257         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
1258     *ireq->preferredMessageSize =
1259         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
1260
1261     if (auth_groupId || auth_password)
1262     {
1263         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1264         int i = 0;
1265         pass->groupId = 0;
1266         if (auth_groupId && *auth_groupId)
1267         {
1268             pass->groupId = (char *)
1269                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1270             strcpy(pass->groupId, auth_groupId);
1271             i++;
1272         }
1273         pass->userId = 0;
1274         if (auth_userId && *auth_userId)
1275         {
1276             pass->userId = (char *)
1277                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1278             strcpy(pass->userId, auth_userId);
1279             i++;
1280         }
1281         pass->password = 0;
1282         if (auth_password && *auth_password)
1283         {
1284             pass->password = (char *)
1285                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1286             strcpy(pass->password, auth_password);
1287             i++;
1288         }
1289         if (i)
1290         {
1291             auth->which = Z_IdAuthentication_idPass;
1292             auth->u.idPass = pass;
1293             ireq->idAuthentication = auth;
1294         }
1295     }
1296     else if (auth_userId)
1297     {
1298         auth->which = Z_IdAuthentication_open;
1299         auth->u.open = (char *)
1300             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1301         strcpy(auth->u.open, auth_userId);
1302         ireq->idAuthentication = auth;
1303     }
1304     if (c->proxy)
1305         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1306                                  VAL_PROXY, 1, c->host_port);
1307     if (c->charset || c->lang)
1308     {
1309         Z_OtherInformation **oi;
1310         Z_OtherInformationUnit *oi_unit;
1311
1312         yaz_oi_APDU(apdu, &oi);
1313
1314         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1315         {
1316             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1317             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1318             oi_unit->information.externallyDefinedInfo =
1319                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1320                                               c->charset, c->lang, 1);
1321         }
1322     }
1323     assert(apdu);
1324     return send_APDU(c, apdu);
1325 }
1326
1327 #if YAZ_HAVE_XML2
1328 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1329 {
1330     Z_GDU *gdu;
1331     ZOOM_Event event;
1332
1333     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1334
1335     if (c->sru_mode == zoom_sru_get)
1336     {
1337         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1338     }
1339     else if (c->sru_mode == zoom_sru_post)
1340     {
1341         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1342     }
1343     else if (c->sru_mode == zoom_sru_soap)
1344     {
1345         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1346     }
1347     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1348         return zoom_complete;
1349     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1350
1351     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1352     ZOOM_connection_put_event(c, event);
1353     odr_reset(c->odr_out);
1354     return do_write(c);
1355 }
1356 #endif
1357
1358 #if YAZ_HAVE_XML2
1359 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1360 {
1361     int i;
1362     int *start, *count;
1363     ZOOM_resultset resultset = 0;
1364     Z_SRW_PDU *sr = 0;
1365     const char *option_val = 0;
1366
1367     if (c->error)                  /* don't continue on error */
1368         return zoom_complete;
1369     assert(c->tasks);
1370     switch(c->tasks->which)
1371     {
1372     case ZOOM_TASK_SEARCH:
1373         resultset = c->tasks->u.search.resultset;
1374         resultset->setname = xstrdup("default");
1375         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1376         start = &c->tasks->u.search.start;
1377         count = &c->tasks->u.search.count;
1378         break;
1379     case ZOOM_TASK_RETRIEVE:
1380         resultset = c->tasks->u.retrieve.resultset;
1381
1382         start = &c->tasks->u.retrieve.start;
1383         count = &c->tasks->u.retrieve.count;
1384
1385         if (*start >= resultset->size)
1386             return zoom_complete;
1387         if (*start + *count > resultset->size)
1388             *count = resultset->size - *start;
1389
1390         for (i = 0; i < *count; i++)
1391         {
1392             ZOOM_record rec =
1393                 record_cache_lookup(resultset, i + *start,
1394                                     c->tasks->u.retrieve.syntax,
1395                                     c->tasks->u.retrieve.elementSetName);
1396             if (!rec)
1397                 break;
1398             else
1399             {
1400                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1401                 ZOOM_connection_put_event(c, event);
1402             }
1403         }
1404         *start += i;
1405         *count -= i;
1406
1407         if (*count == 0)
1408             return zoom_complete;
1409         break;
1410     default:
1411         return zoom_complete;
1412     }
1413     assert(resultset->query);
1414
1415     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1416
1417     if (resultset->query->z_query->which == Z_Query_type_104
1418         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1419     {
1420         sr->u.request->query_type = Z_SRW_query_type_cql;
1421         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1422     }
1423     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1424              resultset->query->z_query->u.type_1)
1425     {
1426         sr->u.request->query_type = Z_SRW_query_type_pqf;
1427         sr->u.request->query.pqf = resultset->query->query_string;
1428     }
1429     else
1430     {
1431         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1432         return zoom_complete;
1433     }
1434     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1435     sr->u.request->maximumRecords = odr_intdup(
1436         c->odr_out, resultset->step>0 ? resultset->step : *count);
1437     sr->u.request->recordSchema = resultset->schema;
1438
1439     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1440     if (option_val)
1441         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1442
1443     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1444     if (option_val)
1445         sr->extra_args = odr_strdup(c->odr_out, option_val);
1446     return send_srw(c, sr);
1447 }
1448 #else
1449 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1450 {
1451     return zoom_complete;
1452 }
1453 #endif
1454
1455 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1456 {
1457     ZOOM_resultset r;
1458     int lslb, ssub, mspn;
1459     const char *syntax;
1460     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1461     Z_SearchRequest *search_req = apdu->u.searchRequest;
1462     const char *elementSetName;
1463     const char *smallSetElementSetName;
1464     const char *mediumSetElementSetName;
1465
1466     assert(c->tasks);
1467     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1468
1469     r = c->tasks->u.search.resultset;
1470
1471     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1472
1473     elementSetName =
1474         ZOOM_options_get(r->options, "elementSetName");
1475     smallSetElementSetName  =
1476         ZOOM_options_get(r->options, "smallSetElementSetName");
1477     mediumSetElementSetName =
1478         ZOOM_options_get(r->options, "mediumSetElementSetName");
1479
1480     if (!smallSetElementSetName)
1481         smallSetElementSetName = elementSetName;
1482
1483     if (!mediumSetElementSetName)
1484         mediumSetElementSetName = elementSetName;
1485
1486     assert(r);
1487     assert(r->query);
1488
1489     /* prepare query for the search request */
1490     search_req->query = r->query->z_query;
1491     if (!search_req->query)
1492     {
1493         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1494         return zoom_complete;
1495     }
1496
1497     search_req->databaseNames = r->databaseNames;
1498     search_req->num_databaseNames = r->num_databaseNames;
1499
1500     /* get syntax (no need to provide unless piggyback is in effect) */
1501     syntax = c->tasks->u.search.syntax;
1502
1503     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1504     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1505     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1506     if (lslb != -1 && ssub != -1 && mspn != -1)
1507     {
1508         /* So're a Z39.50 expert? Let's hope you don't do sort */
1509         *search_req->largeSetLowerBound = lslb;
1510         *search_req->smallSetUpperBound = ssub;
1511         *search_req->mediumSetPresentNumber = mspn;
1512     }
1513     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1514              && r->piggyback && !r->r_sort_spec && !r->schema)
1515     {
1516         /* Regular piggyback - do it unless we're going to do sort */
1517         *search_req->largeSetLowerBound = 2000000000;
1518         *search_req->smallSetUpperBound = 1;
1519         *search_req->mediumSetPresentNumber =
1520             r->step>0 ? r->step : c->tasks->u.search.count;
1521     }
1522     else
1523     {
1524         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1525         smallSetElementSetName = 0;
1526         mediumSetElementSetName = 0;
1527         syntax = 0;
1528     }
1529     if (smallSetElementSetName && *smallSetElementSetName)
1530     {
1531         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1532             odr_malloc(c->odr_out, sizeof(*esn));
1533
1534         esn->which = Z_ElementSetNames_generic;
1535         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1536         search_req->smallSetElementSetNames = esn;
1537     }
1538     if (mediumSetElementSetName && *mediumSetElementSetName)
1539     {
1540         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1541             odr_malloc(c->odr_out, sizeof(*esn));
1542
1543         esn->which = Z_ElementSetNames_generic;
1544         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1545         search_req->mediumSetElementSetNames = esn;
1546     }
1547     if (syntax)
1548         search_req->preferredRecordSyntax =
1549             yaz_str_to_z3950oid(c->odr_out, CLASS_RECSYN, syntax);
1550
1551     if (!r->setname)
1552     {
1553         if (c->support_named_resultsets)
1554         {
1555             char setname[14];
1556             int ord;
1557             /* find the lowest unused ordinal so that we re-use
1558                result sets on the server. */
1559             for (ord = 1; ; ord++)
1560             {
1561                 ZOOM_resultset rp;
1562                 sprintf(setname, "%d", ord);
1563                 for (rp = c->resultsets; rp; rp = rp->next)
1564                     if (rp->setname && !strcmp(rp->setname, setname))
1565                         break;
1566                 if (!rp)
1567                     break;
1568             }
1569             r->setname = xstrdup(setname);
1570             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1571                     "set %s", c, r->setname);
1572         }
1573         else
1574         {
1575             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1576                     "default set", c);
1577             r->setname = xstrdup("default");
1578         }
1579         ZOOM_options_set(r->options, "setname", r->setname);
1580     }
1581     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1582     return send_APDU(c, apdu);
1583 }
1584
1585 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1586 {
1587     int oclass;
1588     char *addinfo = 0;
1589
1590     switch (r->which)
1591     {
1592     case Z_DefaultDiagFormat_v2Addinfo:
1593         addinfo = r->u.v2Addinfo;
1594         break;
1595     case Z_DefaultDiagFormat_v3Addinfo:
1596         addinfo = r->u.v3Addinfo;
1597         break;
1598     }
1599     xfree(c->addinfo);
1600     c->addinfo = 0;
1601     set_dset_error(c, *r->condition,
1602                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1603                    addinfo, 0);
1604 }
1605
1606 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1607 {
1608     if (p->which != Z_DiagRec_defaultFormat)
1609         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1610     else
1611         response_default_diag(c, p->u.defaultFormat);
1612 }
1613
1614 ZOOM_API(ZOOM_record)
1615     ZOOM_record_clone(ZOOM_record srec)
1616 {
1617     char *buf;
1618     int size;
1619     ODR odr_enc;
1620     ZOOM_record nrec;
1621
1622     odr_enc = odr_createmem(ODR_ENCODE);
1623     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1624         return 0;
1625     buf = odr_getbuf(odr_enc, &size, 0);
1626
1627     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1628     nrec->odr = odr_createmem(ODR_DECODE);
1629     nrec->wrbuf_marc = 0;
1630     nrec->wrbuf_iconv = 0;
1631     nrec->wrbuf_opac = 0;
1632     odr_setbuf(nrec->odr, buf, size, 0);
1633     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1634
1635     odr_destroy(odr_enc);
1636     return nrec;
1637 }
1638
1639 ZOOM_API(ZOOM_record)
1640     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1641 {
1642     const char *syntax =
1643         ZOOM_options_get(s->options, "preferredRecordSyntax");
1644     const char *elementSetName =
1645         ZOOM_options_get(s->options, "elementSetName");
1646
1647     return record_cache_lookup(s, pos, syntax, elementSetName);
1648 }
1649
1650 ZOOM_API(ZOOM_record)
1651     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1652 {
1653     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1654
1655     if (!rec)
1656     {
1657         /*
1658          * MIKE: I think force_sync should always be zero, but I don't
1659          * want to make this change until I get the go-ahead from
1660          * Adam, in case something depends on the old synchronous
1661          * behaviour.
1662          */
1663         int force_sync = 1;
1664         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1665         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1666         rec = ZOOM_resultset_record_immediate(r, pos);
1667     }
1668     return rec;
1669 }
1670
1671 ZOOM_API(void)
1672     ZOOM_record_destroy(ZOOM_record rec)
1673 {
1674     if (!rec)
1675         return;
1676     if (rec->wrbuf_marc)
1677         wrbuf_free(rec->wrbuf_marc, 1);
1678     if (rec->wrbuf_iconv)
1679         wrbuf_free(rec->wrbuf_iconv, 1);
1680     if (rec->wrbuf_opac)
1681         wrbuf_free(rec->wrbuf_opac, 1);
1682     odr_destroy(rec->odr);
1683     xfree(rec);
1684 }
1685
1686 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1687                                      int *len,
1688                                      const char *buf, int sz,
1689                                      const char *record_charset)
1690 {
1691     char to[40];
1692     char from[40];
1693     yaz_iconv_t cd = 0;
1694     yaz_marc_t mt = yaz_marc_create();
1695
1696     *from = '\0';
1697     strcpy(to, "UTF-8");
1698     if (record_charset && *record_charset)
1699     {
1700         /* Use "from,to" or just "from" */
1701         const char *cp = strchr(record_charset, ',');
1702         int clen = strlen(record_charset);
1703         if (cp && cp[1])
1704         {
1705             strncpy( to, cp+1, sizeof(to)-1);
1706             to[sizeof(to)-1] = '\0';
1707             clen = cp - record_charset;
1708         }
1709         if (clen > sizeof(from)-1)
1710             clen = sizeof(from)-1;
1711
1712         if (clen)
1713             strncpy(from, record_charset, clen);
1714         from[clen] = '\0';
1715     }
1716
1717     if (*from && *to)
1718     {
1719         cd = yaz_iconv_open(to, from);
1720         yaz_marc_iconv(mt, cd);
1721     }
1722
1723     yaz_marc_xml(mt, marc_type);
1724     if (!rec->wrbuf_marc)
1725         rec->wrbuf_marc = wrbuf_alloc();
1726     wrbuf_rewind(rec->wrbuf_marc);
1727     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1728     {
1729         yaz_marc_destroy(mt);
1730         if (cd)
1731             yaz_iconv_close(cd);
1732         if (len)
1733             *len = wrbuf_len(rec->wrbuf_marc);
1734         return wrbuf_buf(rec->wrbuf_marc);
1735     }
1736     yaz_marc_destroy(mt);
1737     if (cd)
1738         yaz_iconv_close(cd);
1739     return 0;
1740 }
1741
1742 static const char *record_iconv_return(ZOOM_record rec, int *len,
1743                                        const char *buf, int sz,
1744                                        const char *record_charset)
1745 {
1746     char to[40];
1747     char from[40];
1748     yaz_iconv_t cd = 0;
1749
1750     *from = '\0';
1751     strcpy(to, "UTF-8");
1752     if (record_charset && *record_charset)
1753     {
1754         /* Use "from,to" or just "from" */
1755         const char *cp = strchr(record_charset, ',');
1756         int clen = strlen(record_charset);
1757         if (cp && cp[1])
1758         {
1759             strncpy( to, cp+1, sizeof(to)-1);
1760             to[sizeof(to)-1] = '\0';
1761             clen = cp - record_charset;
1762         }
1763         if (clen > sizeof(from)-1)
1764             clen = sizeof(from)-1;
1765
1766         if (clen)
1767             strncpy(from, record_charset, clen);
1768         from[clen] = '\0';
1769     }
1770
1771     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1772     {
1773         char outbuf[12];
1774         size_t inbytesleft = sz;
1775         const char *inp = buf;
1776
1777         if (!rec->wrbuf_iconv)
1778             rec->wrbuf_iconv = wrbuf_alloc();
1779
1780         wrbuf_rewind(rec->wrbuf_iconv);
1781
1782         while (inbytesleft)
1783         {
1784             size_t outbytesleft = sizeof(outbuf);
1785             char *outp = outbuf;
1786             size_t r = yaz_iconv(cd, (char**) &inp,
1787                                  &inbytesleft,
1788                                  &outp, &outbytesleft);
1789             if (r == (size_t) (-1))
1790             {
1791                 int e = yaz_iconv_error(cd);
1792                 if (e != YAZ_ICONV_E2BIG)
1793                     break;
1794             }
1795             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1796         }
1797         wrbuf_puts(rec->wrbuf_iconv, "");
1798         buf = wrbuf_buf(rec->wrbuf_iconv);
1799         sz = wrbuf_len(rec->wrbuf_iconv);
1800         yaz_iconv_close(cd);
1801     }
1802     if (len)
1803         *len = sz;
1804     return buf;
1805 }
1806
1807 ZOOM_API(int)
1808     ZOOM_record_error(ZOOM_record rec, const char **cp,
1809                       const char **addinfo, const char **diagset)
1810 {
1811     Z_NamePlusRecord *npr;
1812
1813     if (!rec)
1814         return 0;
1815     npr = rec->npr;
1816     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1817     {
1818         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1819         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1820         const char *add = 0;
1821
1822         if (diag_rec->which == Z_DiagRec_defaultFormat)
1823         {
1824             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1825             int oclass;
1826
1827             error = *ddf->condition;
1828             switch (ddf->which)
1829             {
1830             case Z_DefaultDiagFormat_v2Addinfo:
1831                 add = ddf->u.v2Addinfo;
1832                 break;
1833             case Z_DefaultDiagFormat_v3Addinfo:
1834                 add = ddf->u.v3Addinfo;
1835                 break;
1836             }
1837             if (diagset)
1838                 *diagset = yaz_z3950oid_to_str(ddf->diagnosticSetId, &oclass);
1839         }
1840         else
1841         {
1842             if (diagset)
1843                 *diagset = "Bib-1";
1844         }
1845         if (addinfo)
1846             *addinfo = add ? add : "";
1847         if (cp)
1848             *cp = diagbib1_str(error);
1849         return error;
1850     }
1851     return 0;
1852 }
1853
1854 ZOOM_API(const char *)
1855     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1856 {
1857     char type[40];
1858     char charset[40];
1859     char xpath[512];
1860     const char *cp;
1861     int i;
1862     Z_NamePlusRecord *npr;
1863
1864     if (len)
1865         *len = 0; /* default return */
1866
1867     if (!rec)
1868         return 0;
1869     npr = rec->npr;
1870     if (!npr)
1871         return 0;
1872
1873     cp = type_spec;
1874     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1875     {
1876         if (cp[i] == ';' || cp[i] == ' ')
1877             break;
1878         type[i] = cp[i];
1879     }
1880     type[i] = '\0';
1881     charset[0] = '\0';
1882     while (type_spec[i] == ';')
1883     {
1884         i++;
1885         while (type_spec[i] == ' ')
1886             i++;
1887         if (!strncmp(type_spec+i, "charset=", 8))
1888         {
1889             int j = 0;
1890             i = i + 8; /* skip charset= */
1891             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1892             {
1893                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1894                     break;
1895                 charset[j] = cp[i];
1896             }
1897             charset[j] = '\0';
1898         }
1899         else if (!strncmp(type_spec+i, "xpath=", 6))
1900         {
1901             int j = 0;
1902             i = i + 6;
1903             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1904                 xpath[j] = cp[i];
1905             xpath[j] = '\0';
1906         }
1907         while (type_spec[i] == ' ')
1908             i++;
1909     }
1910     if (!strcmp(type, "database"))
1911     {
1912         if (len)
1913             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1914         return npr->databaseName;
1915     }
1916     else if (!strcmp(type, "syntax"))
1917     {
1918         const char *desc = 0;
1919         if (npr->which == Z_NamePlusRecord_databaseRecord)
1920         {
1921             Z_External *r = (Z_External *) npr->u.databaseRecord;
1922             oident *ent = oid_getentbyoid(r->direct_reference);
1923             if (ent)
1924                 desc = ent->desc;
1925         }
1926         if (!desc)
1927             desc = "none";
1928         if (len)
1929             *len = strlen(desc);
1930         return desc;
1931     }
1932     if (npr->which != Z_NamePlusRecord_databaseRecord)
1933         return 0;
1934
1935     /* from now on - we have a database record .. */
1936     if (!strcmp(type, "render"))
1937     {
1938         Z_External *r = (Z_External *) npr->u.databaseRecord;
1939         oident *ent = oid_getentbyoid(r->direct_reference);
1940
1941         /* render bibliographic record .. */
1942         if (r->which == Z_External_OPAC)
1943         {
1944             r = r->u.opac->bibliographicRecord;
1945             if (!r)
1946                 return 0;
1947             ent = oid_getentbyoid(r->direct_reference);
1948         }
1949         if (r->which == Z_External_sutrs)
1950             return record_iconv_return(rec, len,
1951                                        (char*) r->u.sutrs->buf,
1952                                        r->u.sutrs->len,
1953                                        charset);
1954         else if (r->which == Z_External_octet)
1955         {
1956             const char *ret_buf;
1957             switch (ent->value)
1958             {
1959             case VAL_SOIF:
1960             case VAL_HTML:
1961             case VAL_SUTRS:
1962                 break;
1963             case VAL_TEXT_XML:
1964             case VAL_APPLICATION_XML:
1965                 break;
1966             default:
1967                 ret_buf = marc_iconv_return(
1968                     rec, YAZ_MARC_LINE, len,
1969                     (const char *) r->u.octet_aligned->buf,
1970                     r->u.octet_aligned->len,
1971                     charset);
1972                 if (ret_buf)
1973                     return ret_buf;
1974             }
1975             return record_iconv_return(rec, len,
1976                                        (const char *) r->u.octet_aligned->buf,
1977                                        r->u.octet_aligned->len,
1978                                        charset);
1979         }
1980         else if (r->which == Z_External_grs1)
1981         {
1982             if (!rec->wrbuf_marc)
1983                 rec->wrbuf_marc = wrbuf_alloc();
1984             wrbuf_rewind(rec->wrbuf_marc);
1985             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1986             return record_iconv_return(rec, len,
1987                                        wrbuf_buf(rec->wrbuf_marc),
1988                                        wrbuf_len(rec->wrbuf_marc),
1989                                        charset);
1990         }
1991         return 0;
1992     }
1993     else if (!strcmp(type, "xml"))
1994     {
1995         Z_External *r = (Z_External *) npr->u.databaseRecord;
1996         oident *ent = oid_getentbyoid(r->direct_reference);
1997
1998         /* render bibliographic record .. */
1999         if (r->which == Z_External_OPAC)
2000         {
2001             r = r->u.opac->bibliographicRecord;
2002             if (!r)
2003                 return 0;
2004             ent = oid_getentbyoid(r->direct_reference);
2005         }
2006
2007         if (r->which == Z_External_sutrs)
2008             return record_iconv_return(rec, len,
2009                                        (const char *) r->u.sutrs->buf,
2010                                        r->u.sutrs->len,
2011                                        charset);
2012         else if (r->which == Z_External_octet)
2013         {
2014             const char *ret_buf;
2015             int marc_decode_type = YAZ_MARC_MARCXML;
2016
2017             switch (ent->value)
2018             {
2019             case VAL_SOIF:
2020             case VAL_HTML:
2021             case VAL_SUTRS:
2022                 break;
2023             case VAL_TEXT_XML:
2024             case VAL_APPLICATION_XML:
2025                 break;
2026             default:
2027                 ret_buf = marc_iconv_return(
2028                     rec, marc_decode_type, len,
2029                     (const char *) r->u.octet_aligned->buf,
2030                     r->u.octet_aligned->len,
2031                     charset);
2032                 if (ret_buf)
2033                     return ret_buf;
2034             }
2035             return record_iconv_return(rec, len,
2036                                        (const char *) r->u.octet_aligned->buf,
2037                                        r->u.octet_aligned->len,
2038                                        charset);
2039         }
2040         else if (r->which == Z_External_grs1)
2041         {
2042             if (len) *len = 5;
2043             return "GRS-1";
2044         }
2045         return 0;
2046     }
2047     else if (!strcmp(type, "raw"))
2048     {
2049         Z_External *r = (Z_External *) npr->u.databaseRecord;
2050
2051         if (r->which == Z_External_sutrs)
2052         {
2053             if (len) *len = r->u.sutrs->len;
2054             return (const char *) r->u.sutrs->buf;
2055         }
2056         else if (r->which == Z_External_octet)
2057         {
2058             if (len) *len = r->u.octet_aligned->len;
2059             return (const char *) r->u.octet_aligned->buf;
2060         }
2061         else /* grs-1, explain, OPAC, ... */
2062         {
2063             if (len) *len = -1;
2064             return (const char *) npr->u.databaseRecord;
2065         }
2066         return 0;
2067     }
2068     else if (!strcmp (type, "ext"))
2069     {
2070         if (len) *len = -1;
2071         return (const char *) npr->u.databaseRecord;
2072     }
2073     else if (!strcmp (type, "opac"))
2074
2075     {
2076         Z_External *r = (Z_External *) npr->u.databaseRecord;
2077         if (r->which == Z_External_OPAC)
2078         {
2079             if (!rec->wrbuf_opac)
2080                 rec->wrbuf_opac = wrbuf_alloc();
2081             wrbuf_rewind(rec->wrbuf_opac);
2082             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2083             return record_iconv_return(rec, len,
2084                                        wrbuf_buf(rec->wrbuf_opac),
2085                                        wrbuf_len(rec->wrbuf_opac),
2086                                        charset);
2087         }
2088     }
2089     return 0;
2090 }
2091
2092 static int strcmp_null(const char *v1, const char *v2)
2093 {
2094     if (!v1 && !v2)
2095         return 0;
2096     if (!v1 || !v2)
2097         return -1;
2098     return strcmp(v1, v2);
2099 }
2100
2101 static size_t record_hash(int pos)
2102 {
2103     if (pos < 0)
2104         pos = 0;
2105     return pos % RECORD_HASH_SIZE;
2106 }
2107
2108 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2109                              int pos,
2110                              const char *syntax, const char *elementSetName)
2111 {
2112     ZOOM_record_cache rc;
2113
2114     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2115     ZOOM_connection_put_event(r->connection, event);
2116
2117     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2118     {
2119         if (pos == rc->pos)
2120         {
2121             if (strcmp_null(r->schema, rc->schema))
2122                 continue;
2123             if (strcmp_null(elementSetName,rc->elementSetName))
2124                 continue;
2125             if (strcmp_null(syntax, rc->syntax))
2126                 continue;
2127             /* not destroying rc->npr (it's handled by nmem )*/
2128             rc->rec.npr = npr;
2129             /* keeping wrbuf_marc too */
2130             return;
2131         }
2132     }
2133     rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2134     rc->rec.npr = npr;
2135     rc->rec.odr = 0;
2136     rc->rec.wrbuf_marc = 0;
2137     rc->rec.wrbuf_iconv = 0;
2138     rc->rec.wrbuf_opac = 0;
2139     if (elementSetName)
2140         rc->elementSetName = odr_strdup(r->odr, elementSetName);
2141     else
2142         rc->elementSetName = 0;
2143
2144     if (syntax)
2145         rc->syntax = odr_strdup(r->odr, syntax);
2146     else
2147         rc->syntax = 0;
2148
2149     if (r->schema)
2150         rc->schema = odr_strdup(r->odr, r->schema);
2151     else
2152         rc->schema = 0;
2153
2154     rc->pos = pos;
2155     rc->next = r->record_hash[record_hash(pos)];
2156     r->record_hash[record_hash(pos)] = rc;
2157 }
2158
2159 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2160                                        const char *syntax,
2161                                        const char *elementSetName)
2162 {
2163     ZOOM_record_cache rc;
2164
2165     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2166     {
2167         if (pos == rc->pos)
2168         {
2169             if (strcmp_null(r->schema, rc->schema))
2170                 continue;
2171             if (strcmp_null(elementSetName,rc->elementSetName))
2172                 continue;
2173             if (strcmp_null(syntax, rc->syntax))
2174                 continue;
2175             return &rc->rec;
2176         }
2177     }
2178     return 0;
2179 }
2180
2181 static void handle_records(ZOOM_connection c, Z_Records *sr,
2182                            int present_phase)
2183 {
2184     ZOOM_resultset resultset;
2185     int *start, *count;
2186     const char *syntax = 0, *elementSetName = 0;
2187
2188     if (!c->tasks)
2189         return ;
2190     switch (c->tasks->which)
2191     {
2192     case ZOOM_TASK_SEARCH:
2193         resultset = c->tasks->u.search.resultset;
2194         start = &c->tasks->u.search.start;
2195         count = &c->tasks->u.search.count;
2196         syntax = c->tasks->u.search.syntax;
2197         elementSetName = c->tasks->u.search.elementSetName;
2198         break;
2199     case ZOOM_TASK_RETRIEVE:
2200         resultset = c->tasks->u.retrieve.resultset;
2201         start = &c->tasks->u.retrieve.start;
2202         count = &c->tasks->u.retrieve.count;
2203         syntax = c->tasks->u.retrieve.syntax;
2204         elementSetName = c->tasks->u.retrieve.elementSetName;
2205         break;
2206     default:
2207         return;
2208     }
2209     if (sr && sr->which == Z_Records_NSD)
2210         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2211     else if (sr && sr->which == Z_Records_multipleNSD)
2212     {
2213         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2214             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2215         else
2216             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2217     }
2218     else
2219     {
2220         if (*count + *start > resultset->size)
2221             *count = resultset->size - *start;
2222         if (*count < 0)
2223             *count = 0;
2224         if (sr && sr->which == Z_Records_DBOSD)
2225         {
2226             int i;
2227             NMEM nmem = odr_extract_mem(c->odr_in);
2228             Z_NamePlusRecordList *p =
2229                 sr->u.databaseOrSurDiagnostics;
2230             for (i = 0; i<p->num_records; i++)
2231             {
2232                 record_cache_add(resultset, p->records[i], i + *start,
2233                                  syntax, elementSetName);
2234             }
2235             *count -= i;
2236             if (*count < 0)
2237                 *count = 0;
2238             *start += i;
2239             yaz_log(log_details,
2240                     "handle_records resultset=%p start=%d count=%d",
2241                     resultset, *start, *count);
2242
2243             /* transfer our response to search_nmem .. we need it later */
2244             nmem_transfer(resultset->odr->mem, nmem);
2245             nmem_destroy(nmem);
2246             if (present_phase && p->num_records == 0)
2247             {
2248                 /* present response and we didn't get any records! */
2249                 Z_NamePlusRecord *myrec =
2250                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2251                 record_cache_add(resultset, myrec, *start,
2252                                  syntax, elementSetName);
2253             }
2254         }
2255         else if (present_phase)
2256         {
2257             /* present response and we didn't get any records! */
2258             Z_NamePlusRecord *myrec =
2259                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2260             record_cache_add(resultset, myrec, *start, syntax, elementSetName);
2261         }
2262     }
2263 }
2264
2265 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2266 {
2267     handle_records(c, pr->records, 1);
2268 }
2269
2270 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2271                                        Z_Term *term)
2272 {
2273     switch (term->which)
2274     {
2275     case Z_Term_general:
2276         ZOOM_options_setl(opt, name,
2277                           (const char *)(term->u.general->buf),
2278                           term->u.general->len);
2279         break;
2280     case Z_Term_characterString:
2281         ZOOM_options_set(opt, name, term->u.characterString);
2282         break;
2283     case Z_Term_numeric:
2284         ZOOM_options_set_int(opt, name, *term->u.numeric);
2285         break;
2286     }
2287 }
2288
2289 static void handle_queryExpression(ZOOM_options opt, const char *name,
2290                                    Z_QueryExpression *exp)
2291 {
2292     char opt_name[80];
2293
2294     switch (exp->which)
2295     {
2296     case Z_QueryExpression_term:
2297         if (exp->u.term && exp->u.term->queryTerm)
2298         {
2299             sprintf(opt_name, "%s.term", name);
2300             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2301         }
2302         break;
2303     case Z_QueryExpression_query:
2304         break;
2305     }
2306 }
2307
2308 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2309                                 Z_OtherInformation *o)
2310 {
2311     int i;
2312     for (i = 0; o && i < o->num_elements; i++)
2313     {
2314         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2315         {
2316             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2317
2318             if (ext->which == Z_External_searchResult1)
2319             {
2320                 int j;
2321                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2322
2323                 if (sr->num)
2324                     ZOOM_options_set_int(
2325                         resultset->options, "searchresult.size", sr->num);
2326
2327                 for (j = 0; j < sr->num; j++)
2328                 {
2329                     Z_SearchInfoReport_s *ent =
2330                         ext->u.searchResult1->elements[j];
2331                     char pref[80];
2332
2333                     sprintf(pref, "searchresult.%d", j);
2334
2335                     if (ent->subqueryId)
2336                     {
2337                         char opt_name[80];
2338                         sprintf(opt_name, "%s.id", pref);
2339                         ZOOM_options_set(resultset->options, opt_name,
2340                                          ent->subqueryId);
2341                     }
2342                     if (ent->subqueryExpression)
2343                     {
2344                         char opt_name[80];
2345                         sprintf(opt_name, "%s.subquery", pref);
2346                         handle_queryExpression(resultset->options, opt_name,
2347                                                ent->subqueryExpression);
2348                     }
2349                     if (ent->subqueryInterpretation)
2350                     {
2351                         char opt_name[80];
2352                         sprintf(opt_name, "%s.interpretation", pref);
2353                         handle_queryExpression(resultset->options, opt_name,
2354                                                ent->subqueryInterpretation);
2355                     }
2356                     if (ent->subqueryRecommendation)
2357                     {
2358                         char opt_name[80];
2359                         sprintf(opt_name, "%s.recommendation", pref);
2360                         handle_queryExpression(resultset->options, opt_name,
2361                                                ent->subqueryRecommendation);
2362                     }
2363                     if (ent->subqueryCount)
2364                     {
2365                         char opt_name[80];
2366                         sprintf(opt_name, "%s.count", pref);
2367                         ZOOM_options_set_int(resultset->options, opt_name,
2368                                              *ent->subqueryCount);
2369                     }
2370                 }
2371             }
2372         }
2373     }
2374 }
2375
2376 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2377 {
2378     ZOOM_resultset resultset;
2379     ZOOM_Event event;
2380
2381     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2382         return ;
2383
2384     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2385     ZOOM_connection_put_event(c, event);
2386
2387     resultset = c->tasks->u.search.resultset;
2388
2389     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2390
2391     resultset->size = *sr->resultCount;
2392     handle_records(c, sr->records, 0);
2393 }
2394
2395 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2396 {
2397     if (res->diagnostics && res->num_diagnostics > 0)
2398         response_diag(c, res->diagnostics[0]);
2399 }
2400
2401 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2402 {
2403     NMEM nmem = odr_extract_mem(c->odr_in);
2404     ZOOM_scanset scan;
2405
2406     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2407         return 0;
2408     scan = c->tasks->u.scan.scan;
2409
2410     if (res->entries && res->entries->nonsurrogateDiagnostics)
2411         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2412     scan->scan_response = res;
2413     nmem_transfer(scan->odr->mem, nmem);
2414     if (res->stepSize)
2415         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2416     if (res->positionOfTerm)
2417         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2418     if (res->scanStatus)
2419         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2420     if (res->numberOfEntriesReturned)
2421         ZOOM_options_set_int(scan->options, "number",
2422                              *res->numberOfEntriesReturned);
2423     nmem_destroy(nmem);
2424     return 1;
2425 }
2426
2427 static zoom_ret send_sort(ZOOM_connection c,
2428                           ZOOM_resultset resultset)
2429 {
2430     if (c->error)
2431         resultset->r_sort_spec = 0;
2432     if (resultset->r_sort_spec)
2433     {
2434         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2435         Z_SortRequest *req = apdu->u.sortRequest;
2436
2437         req->num_inputResultSetNames = 1;
2438         req->inputResultSetNames = (Z_InternationalString **)
2439             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2440         req->inputResultSetNames[0] =
2441             odr_strdup(c->odr_out, resultset->setname);
2442         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2443         req->sortSequence = resultset->r_sort_spec;
2444         resultset->r_sort_spec = 0;
2445         return send_APDU(c, apdu);
2446     }
2447     return zoom_complete;
2448 }
2449
2450 static zoom_ret send_present(ZOOM_connection c)
2451 {
2452     Z_APDU *apdu = 0;
2453     Z_PresentRequest *req = 0;
2454     int i = 0;
2455     const char *syntax = 0;
2456     const char *elementSetName = 0;
2457     ZOOM_resultset  resultset;
2458     int *start, *count;
2459
2460     if (!c->tasks)
2461     {
2462         yaz_log(log_details, "%p send_present no tasks", c);
2463         return zoom_complete;
2464     }
2465
2466     switch (c->tasks->which)
2467     {
2468     case ZOOM_TASK_SEARCH:
2469         resultset = c->tasks->u.search.resultset;
2470         start = &c->tasks->u.search.start;
2471         count = &c->tasks->u.search.count;
2472         syntax = c->tasks->u.search.syntax;
2473         elementSetName = c->tasks->u.search.elementSetName;
2474         break;
2475     case ZOOM_TASK_RETRIEVE:
2476         resultset = c->tasks->u.retrieve.resultset;
2477         start = &c->tasks->u.retrieve.start;
2478         count = &c->tasks->u.retrieve.count;
2479         syntax = c->tasks->u.retrieve.syntax;
2480         elementSetName = c->tasks->u.retrieve.elementSetName;
2481         break;
2482     default:
2483         return zoom_complete;
2484     }
2485     yaz_log(log_details, "%p send_present start=%d count=%d",
2486             c, *start, *count);
2487
2488     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2489     {
2490         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2491                        "", 0);
2492     }
2493     if (c->error)                  /* don't continue on error */
2494         return zoom_complete;
2495     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2496             resultset, *start, *count);
2497
2498     for (i = 0; i < *count; i++)
2499     {
2500         ZOOM_record rec =
2501             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2502         if (!rec)
2503             break;
2504         else
2505         {
2506             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2507             ZOOM_connection_put_event(c, event);
2508         }
2509     }
2510     *start += i;
2511     *count -= i;
2512
2513     if (*count == 0)
2514     {
2515         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2516         return zoom_complete;
2517     }
2518
2519     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2520     req = apdu->u.presentRequest;
2521
2522     if (i)
2523         yaz_log(log_details, "%p send_present skip=%d", c, i);
2524
2525     *req->resultSetStartPoint = *start + 1;
2526     *req->numberOfRecordsRequested = resultset->step>0 ?
2527         resultset->step : *count;
2528     if (*req->numberOfRecordsRequested + *start > resultset->size)
2529         *req->numberOfRecordsRequested = resultset->size - *start;
2530     assert(*req->numberOfRecordsRequested > 0);
2531
2532     if (syntax && *syntax)
2533         req->preferredRecordSyntax =
2534             yaz_str_to_z3950oid(c->odr_out, CLASS_RECSYN, syntax);
2535
2536     if (resultset->schema && *resultset->schema)
2537     {
2538         Z_RecordComposition *compo = (Z_RecordComposition *)
2539             odr_malloc(c->odr_out, sizeof(*compo));
2540
2541         req->recordComposition = compo;
2542         compo->which = Z_RecordComp_complex;
2543         compo->u.complex = (Z_CompSpec *)
2544             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2545         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2546             odr_malloc(c->odr_out, sizeof(bool_t));
2547         *compo->u.complex->selectAlternativeSyntax = 0;
2548
2549         compo->u.complex->generic = (Z_Specification *)
2550             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2551
2552         compo->u.complex->generic->which = Z_Schema_oid;
2553         compo->u.complex->generic->schema.oid = (Odr_oid *)
2554             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2555
2556         if (!compo->u.complex->generic->schema.oid)
2557         {
2558             /* OID wasn't a schema! Try record syntax instead. */
2559
2560             compo->u.complex->generic->schema.oid = (Odr_oid *)
2561                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2562         }
2563         if (elementSetName && *elementSetName)
2564         {
2565             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2566                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2567             compo->u.complex->generic->elementSpec->which =
2568                 Z_ElementSpec_elementSetName;
2569             compo->u.complex->generic->elementSpec->u.elementSetName =
2570                 odr_strdup(c->odr_out, elementSetName);
2571         }
2572         else
2573             compo->u.complex->generic->elementSpec = 0;
2574         compo->u.complex->num_dbSpecific = 0;
2575         compo->u.complex->dbSpecific = 0;
2576         compo->u.complex->num_recordSyntax = 0;
2577         compo->u.complex->recordSyntax = 0;
2578     }
2579     else if (elementSetName && *elementSetName)
2580     {
2581         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2582             odr_malloc(c->odr_out, sizeof(*esn));
2583         Z_RecordComposition *compo = (Z_RecordComposition *)
2584             odr_malloc(c->odr_out, sizeof(*compo));
2585
2586         esn->which = Z_ElementSetNames_generic;
2587         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2588         compo->which = Z_RecordComp_simple;
2589         compo->u.simple = esn;
2590         req->recordComposition = compo;
2591     }
2592     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2593     return send_APDU(c, apdu);
2594 }
2595
2596 ZOOM_API(ZOOM_scanset)
2597     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2598 {
2599     ZOOM_scanset s;
2600     ZOOM_query q = ZOOM_query_create();
2601
2602     ZOOM_query_prefix(q, start);
2603
2604     s = ZOOM_connection_scan1(c, q);
2605     ZOOM_query_destroy(q);
2606     return s;
2607
2608 }
2609
2610 ZOOM_API(ZOOM_scanset)
2611     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2612 {
2613     char *start;
2614     char *freeme = 0;
2615     ZOOM_scanset scan = 0;
2616
2617     /*
2618      * We need to check the query-type, so we can recognise CQL and
2619      * CCL and compile them into a form that we can use here.  The
2620      * ZOOM_query structure has no explicit `type' member, but
2621      * inspection of the ZOOM_query_prefix() and ZOOM_query_cql()
2622      * functions shows how the structure is set up in each case.
2623      */
2624     if (!q->z_query)
2625         return 0;
2626     else if (q->z_query->which == Z_Query_type_1)
2627     {
2628         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2629                 c, q, q->query_string);
2630         start = q->query_string;
2631     }
2632     else if (q->z_query->which == Z_Query_type_104)
2633     {
2634         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2635                 c, q, q->query_string);
2636         start = freeme = cql2pqf(c, q->query_string);
2637         if (start == 0)
2638             return 0;
2639     }
2640     else
2641     {
2642         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2643                 c, q, q->query_string);
2644         abort();
2645     }
2646
2647     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2648     scan->connection = c;
2649     scan->odr = odr_createmem(ODR_DECODE);
2650     scan->options = ZOOM_options_create_with_parent(c->options);
2651     scan->refcount = 1;
2652     scan->scan_response = 0;
2653     scan->termListAndStartPoint =
2654         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2655     xfree(freeme);
2656
2657     scan->databaseNames = set_DatabaseNames(c, c->options,
2658                                             &scan->num_databaseNames,
2659                                             scan->odr);
2660     if (scan->termListAndStartPoint != 0)
2661     {
2662         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2663         task->u.scan.scan = scan;
2664
2665         (scan->refcount)++;
2666         if (!c->async)
2667         {
2668             while (ZOOM_event(1, &c))
2669                 ;
2670         }
2671     }
2672     return scan;
2673 }
2674
2675 ZOOM_API(void)
2676     ZOOM_scanset_destroy(ZOOM_scanset scan)
2677 {
2678     if (!scan)
2679         return;
2680     (scan->refcount)--;
2681     if (scan->refcount == 0)
2682     {
2683         odr_destroy(scan->odr);
2684
2685         ZOOM_options_destroy(scan->options);
2686         xfree(scan);
2687     }
2688 }
2689
2690 static zoom_ret send_package(ZOOM_connection c)
2691 {
2692     ZOOM_Event event;
2693
2694     yaz_log(log_details, "%p send_package", c);
2695     if (!c->tasks)
2696         return zoom_complete;
2697     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2698
2699     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2700     ZOOM_connection_put_event(c, event);
2701
2702     c->buf_out = c->tasks->u.package->buf_out;
2703     c->len_out = c->tasks->u.package->len_out;
2704
2705     return do_write(c);
2706 }
2707
2708 static zoom_ret send_scan(ZOOM_connection c)
2709 {
2710     ZOOM_scanset scan;
2711     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2712     Z_ScanRequest *req = apdu->u.scanRequest;
2713
2714     yaz_log(log_details, "%p send_scan", c);
2715     if (!c->tasks)
2716         return zoom_complete;
2717     assert (c->tasks->which == ZOOM_TASK_SCAN);
2718     scan = c->tasks->u.scan.scan;
2719
2720     req->termListAndStartPoint = scan->termListAndStartPoint;
2721     req->attributeSet = scan->attributeSet;
2722
2723     *req->numberOfTermsRequested =
2724         ZOOM_options_get_int(scan->options, "number", 10);
2725
2726     req->preferredPositionInResponse =
2727         odr_intdup(c->odr_out,
2728                    ZOOM_options_get_int(scan->options, "position", 1));
2729
2730     req->stepSize =
2731         odr_intdup(c->odr_out,
2732                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2733
2734     req->databaseNames = scan->databaseNames;
2735     req->num_databaseNames = scan->num_databaseNames;
2736
2737     return send_APDU(c, apdu);
2738 }
2739
2740 ZOOM_API(size_t)
2741     ZOOM_scanset_size(ZOOM_scanset scan)
2742 {
2743     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2744         return 0;
2745     return scan->scan_response->entries->num_entries;
2746 }
2747
2748 ZOOM_API(const char *)
2749     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2750                       int *occ, int *len)
2751 {
2752     const char *term = 0;
2753     size_t noent = ZOOM_scanset_size(scan);
2754     Z_ScanResponse *res = scan->scan_response;
2755
2756     *len = 0;
2757     *occ = 0;
2758     if (pos >= noent)
2759         return 0;
2760     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2761     {
2762         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2763
2764         if (t->term->which == Z_Term_general)
2765         {
2766             term = (const char *) t->term->u.general->buf;
2767             *len = t->term->u.general->len;
2768         }
2769         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2770     }
2771     return term;
2772 }
2773
2774 ZOOM_API(const char *)
2775     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
2776                               int *occ, int *len)
2777 {
2778     const char *term = 0;
2779     size_t noent = ZOOM_scanset_size(scan);
2780     Z_ScanResponse *res = scan->scan_response;
2781
2782     *len = 0;
2783     *occ = 0;
2784     if (pos >= noent)
2785         return 0;
2786     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2787     {
2788         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2789
2790         if (t->displayTerm)
2791         {
2792             term = t->displayTerm;
2793             *len = strlen(term);
2794         }
2795         else if (t->term->which == Z_Term_general)
2796         {
2797             term = (const char *) t->term->u.general->buf;
2798             *len = t->term->u.general->len;
2799         }
2800         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2801     }
2802     return term;
2803 }
2804
2805 ZOOM_API(const char *)
2806     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
2807 {
2808     return ZOOM_options_get(scan->options, key);
2809 }
2810
2811 ZOOM_API(void)
2812     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
2813                             const char *val)
2814 {
2815     ZOOM_options_set(scan->options, key, val);
2816 }
2817
2818 static Z_APDU *create_es_package(ZOOM_package p, int type)
2819 {
2820     const char *str;
2821     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2822     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2823
2824     *req->function = Z_ExtendedServicesRequest_create;
2825
2826     str = ZOOM_options_get(p->options, "package-name");
2827     if (str && *str)
2828         req->packageName = nmem_strdup(p->odr_out->mem, str);
2829
2830     str = ZOOM_options_get(p->options, "user-id");
2831     if (str)
2832         req->userId = nmem_strdup(p->odr_out->mem, str);
2833
2834     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2835                                               type);
2836
2837     str = ZOOM_options_get(p->options, "function");
2838     if (str)
2839     {
2840         if (!strcmp (str, "create"))
2841             *req->function = 1;
2842         if (!strcmp (str, "delete"))
2843             *req->function = 2;
2844         if (!strcmp (str, "modify"))
2845             *req->function = 3;
2846     }
2847     return apdu;
2848 }
2849
2850 static const char *ill_array_lookup(void *clientData, const char *idx)
2851 {
2852     ZOOM_package p = (ZOOM_package) clientData;
2853     return ZOOM_options_get(p->options, idx+4);
2854 }
2855
2856 static Z_External *encode_ill_request(ZOOM_package p)
2857 {
2858     ODR out = p->odr_out;
2859     ILL_Request *req;
2860     Z_External *r = 0;
2861     struct ill_get_ctl ctl;
2862
2863     ctl.odr = p->odr_out;
2864     ctl.clientData = p;
2865     ctl.f = ill_array_lookup;
2866
2867     req = ill_get_ILLRequest(&ctl, "ill", 0);
2868
2869     if (!ill_Request(out, &req, 0, 0))
2870     {
2871         int ill_request_size;
2872         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
2873         if (ill_request_buf)
2874             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
2875         return 0;
2876     }
2877     else
2878     {
2879         oident oid;
2880         int illRequest_size = 0;
2881         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
2882
2883         oid.proto = PROTO_GENERAL;
2884         oid.oclass = CLASS_GENERAL;
2885         oid.value = VAL_ISO_ILL_1;
2886
2887         r = (Z_External *) odr_malloc(out, sizeof(*r));
2888         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2889         r->indirect_reference = 0;
2890         r->descriptor = 0;
2891         r->which = Z_External_single;
2892
2893         r->u.single_ASN1_type =
2894             odr_create_Odr_oct(out,
2895                                (unsigned char *)illRequest_buf,
2896                                illRequest_size);
2897     }
2898     return r;
2899 }
2900
2901 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2902 {
2903     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
2904     const char *str;
2905
2906     req->which = Z_IOItemOrder_esRequest;
2907     req->u.esRequest = (Z_IORequest *)
2908         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2909
2910     /* to keep part ... */
2911     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2912         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2913     req->u.esRequest->toKeep->supplDescription = 0;
2914     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2915         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2916
2917     str = ZOOM_options_get(p->options, "contact-name");
2918     req->u.esRequest->toKeep->contact->name = str ?
2919         nmem_strdup(p->odr_out->mem, str) : 0;
2920
2921     str = ZOOM_options_get(p->options, "contact-phone");
2922     req->u.esRequest->toKeep->contact->phone = str ?
2923         nmem_strdup(p->odr_out->mem, str) : 0;
2924
2925     str = ZOOM_options_get(p->options, "contact-email");
2926     req->u.esRequest->toKeep->contact->email = str ?
2927         nmem_strdup(p->odr_out->mem, str) : 0;
2928
2929     req->u.esRequest->toKeep->addlBilling = 0;
2930
2931     /* not to keep part ... */
2932     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2933         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2934
2935     str = ZOOM_options_get(p->options, "itemorder-setname");
2936     if (!str)
2937         str = "default";
2938
2939     if (!*str)
2940         req->u.esRequest->notToKeep->resultSetItem = 0;
2941     else
2942     {
2943         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2944             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2945
2946         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2947             nmem_strdup(p->odr_out->mem, str);
2948         req->u.esRequest->notToKeep->resultSetItem->item =
2949             (int *) odr_malloc(p->odr_out, sizeof(int));
2950
2951         str = ZOOM_options_get(p->options, "itemorder-item");
2952         *req->u.esRequest->notToKeep->resultSetItem->item =
2953             (str ? atoi(str) : 1);
2954     }
2955     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2956
2957     return req;
2958 }
2959
2960 Z_APDU *create_admin_package(ZOOM_package p, int type,
2961                              Z_ESAdminOriginPartToKeep **toKeepP,
2962                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2963 {
2964     Z_APDU *apdu = create_es_package(p, VAL_ADMINSERVICE);
2965     if (apdu)
2966     {
2967         Z_ESAdminOriginPartToKeep  *toKeep;
2968         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2969         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
2970         const char *first_db = "Default";
2971         int num_db;
2972         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
2973                                       p->odr_out);
2974         if (num_db > 0)
2975             first_db = db[0];
2976
2977         r->direct_reference =
2978             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2979                                    VAL_ADMINSERVICE);
2980         r->descriptor = 0;
2981         r->indirect_reference = 0;
2982         r->which = Z_External_ESAdmin;
2983
2984         r->u.adminService = (Z_Admin *)
2985             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2986         r->u.adminService->which = Z_Admin_esRequest;
2987         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2988             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2989
2990         toKeep = r->u.adminService->u.esRequest->toKeep =
2991             (Z_ESAdminOriginPartToKeep *)
2992             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2993         toKeep->which = type;
2994         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2995         toKeep->u.create = odr_nullval();
2996         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2997
2998         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2999             (Z_ESAdminOriginPartNotToKeep *)
3000             odr_malloc(p->odr_out,
3001                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3002         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3003         notToKeep->u.recordsWillFollow = odr_nullval();
3004         if (toKeepP)
3005             *toKeepP = toKeep;
3006         if (notToKeepP)
3007             *notToKeepP = notToKeep;
3008     }
3009     return apdu;
3010 }
3011
3012 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3013 {
3014     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
3015     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3016     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3017     const char *doc = ZOOM_options_get(p->options, "doc");
3018
3019     if (!doc)
3020         doc = "";
3021
3022     req->taskSpecificParameters = ext;
3023     ext->direct_reference = req->packageType;
3024     ext->descriptor = 0;
3025     ext->indirect_reference = 0;
3026
3027     ext->which = Z_External_octet;
3028     ext->u.single_ASN1_type =
3029         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
3030                            strlen(doc));
3031     return apdu;
3032 }
3033
3034 static Z_APDU *create_update_package(ZOOM_package p)
3035 {
3036     Z_APDU *apdu = 0;
3037     const char *first_db = "Default";
3038     int num_db;
3039     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3040     const char *action = ZOOM_options_get(p->options, "action");
3041     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
3042     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3043     const char *record_buf = ZOOM_options_get(p->options, "record");
3044     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3045     int syntax_oid = VAL_NONE;
3046     int action_no = -1;
3047
3048     if (syntax_str)
3049         syntax_oid = oid_getvalbyname(syntax_str);
3050     if (!record_buf)
3051     {
3052         record_buf = "void";
3053         syntax_oid = VAL_SUTRS;
3054     }
3055     if (syntax_oid == VAL_NONE)
3056         syntax_oid = VAL_TEXT_XML;
3057
3058     if (num_db > 0)
3059         first_db = db[0];
3060
3061     if (!action)
3062         action = "specialUpdate";
3063
3064     if (!strcmp(action, "recordInsert"))
3065         action_no = Z_IUOriginPartToKeep_recordInsert;
3066     else if (!strcmp(action, "recordReplace"))
3067         action_no = Z_IUOriginPartToKeep_recordReplace;
3068     else if (!strcmp(action, "recordDelete"))
3069         action_no = Z_IUOriginPartToKeep_recordDelete;
3070     else if (!strcmp(action, "elementUpdate"))
3071         action_no = Z_IUOriginPartToKeep_elementUpdate;
3072     else if (!strcmp(action, "specialUpdate"))
3073         action_no = Z_IUOriginPartToKeep_specialUpdate;
3074     else
3075         return 0;
3076
3077     apdu = create_es_package(p, VAL_DBUPDATE);
3078     if (apdu)
3079     {
3080         Z_IUOriginPartToKeep *toKeep;
3081         Z_IUSuppliedRecords *notToKeep;
3082         Z_External *r = (Z_External *)
3083             odr_malloc(p->odr_out, sizeof(*r));
3084
3085         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3086
3087         r->direct_reference =
3088             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3089                                    VAL_DBUPDATE);
3090         r->descriptor = 0;
3091         r->which = Z_External_update;
3092         r->indirect_reference = 0;
3093         r->u.update = (Z_IUUpdate *)
3094             odr_malloc(p->odr_out, sizeof(*r->u.update));
3095
3096         r->u.update->which = Z_IUUpdate_esRequest;
3097         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3098             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3099         toKeep = r->u.update->u.esRequest->toKeep =
3100             (Z_IUOriginPartToKeep *)
3101             odr_malloc(p->odr_out, sizeof(*toKeep));
3102
3103         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3104         toKeep->schema = 0;
3105         toKeep->elementSetName = 0;
3106         toKeep->actionQualifier = 0;
3107         toKeep->action = odr_intdup(p->odr_out, action_no);
3108
3109         notToKeep = r->u.update->u.esRequest->notToKeep =
3110             (Z_IUSuppliedRecords *)
3111             odr_malloc(p->odr_out, sizeof(*notToKeep));
3112         notToKeep->num = 1;
3113         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3114             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3115         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3116             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3117         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3118         if (recordIdOpaque)
3119         {
3120             notToKeep->elements[0]->u.opaque =
3121                 odr_create_Odr_oct(p->odr_out,
3122                                    (const unsigned char *) recordIdOpaque,
3123                                    strlen(recordIdOpaque));
3124         }
3125         else if (recordIdNumber)
3126         {
3127             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3128
3129             notToKeep->elements[0]->u.number =
3130                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3131         }
3132         else
3133             notToKeep->elements[0]->u.opaque = 0;
3134         notToKeep->elements[0]->supplementalId = 0;
3135         notToKeep->elements[0]->correlationInfo = 0;
3136         notToKeep->elements[0]->record =
3137             z_ext_record(p->odr_out, syntax_oid,
3138                          record_buf, strlen(record_buf));
3139     }
3140     if (0 && apdu)
3141     {
3142         ODR print = odr_createmem(ODR_PRINT);
3143
3144         z_APDU(print, &apdu, 0, 0);
3145         odr_destroy(print);
3146     }
3147     return apdu;
3148 }
3149
3150 ZOOM_API(void)
3151     ZOOM_package_send(ZOOM_package p, const char *type)
3152 {
3153     Z_APDU *apdu = 0;
3154     ZOOM_connection c;
3155     if (!p)
3156         return;
3157     c = p->connection;
3158     odr_reset(p->odr_out);
3159     xfree(p->buf_out);
3160     p->buf_out = 0;
3161     if (!strcmp(type, "itemorder"))
3162     {
3163         apdu = create_es_package(p, VAL_ITEMORDER);
3164         if (apdu)
3165         {
3166             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3167
3168             r->direct_reference =
3169                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3170                                        VAL_ITEMORDER);
3171             r->descriptor = 0;
3172             r->which = Z_External_itemOrder;
3173             r->indirect_reference = 0;
3174             r->u.itemOrder = encode_item_order(p);
3175
3176             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3177         }
3178     }
3179     else if (!strcmp(type, "create"))  /* create database */
3180     {
3181         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3182                                     0, 0);
3183     }
3184     else if (!strcmp(type, "drop"))  /* drop database */
3185     {
3186         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3187                                     0, 0);
3188     }
3189     else if (!strcmp(type, "commit"))  /* commit changes */
3190     {
3191         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3192                                     0, 0);
3193     }
3194     else if (!strcmp(type, "update")) /* update record(s) */
3195     {
3196         apdu = create_update_package(p);
3197     }
3198     else if (!strcmp(type, "xmlupdate"))
3199     {
3200         apdu = create_xmlupdate_package(p);
3201     }
3202     if (apdu)
3203     {
3204         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3205         {
3206             char *buf;
3207
3208             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3209             task->u.package = p;
3210             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3211             p->buf_out = (char *) xmalloc(p->len_out);
3212             memcpy(p->buf_out, buf, p->len_out);
3213
3214             (p->refcount)++;
3215             if (!c->async)
3216             {
3217                 while (ZOOM_event(1, &c))
3218                     ;
3219             }
3220         }
3221     }
3222 }
3223
3224 ZOOM_API(ZOOM_package)
3225     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3226 {
3227     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3228
3229     p->connection = c;
3230     p->odr_out = odr_createmem(ODR_ENCODE);
3231     p->options = ZOOM_options_create_with_parent2(options, c->options);
3232     p->refcount = 1;
3233     p->buf_out = 0;
3234     p->len_out = 0;
3235     return p;
3236 }
3237
3238 ZOOM_API(void)
3239     ZOOM_package_destroy(ZOOM_package p)
3240 {
3241     if (!p)
3242         return;
3243     (p->refcount)--;
3244     if (p->refcount == 0)
3245     {
3246         odr_destroy(p->odr_out);
3247         xfree(p->buf_out);
3248
3249         ZOOM_options_destroy(p->options);
3250         xfree(p);
3251     }
3252 }
3253
3254 ZOOM_API(const char *)
3255     ZOOM_package_option_get(ZOOM_package p, const char *key)
3256 {
3257     return ZOOM_options_get(p->options, key);
3258 }
3259
3260
3261 ZOOM_API(void)
3262     ZOOM_package_option_set(ZOOM_package p, const char *key,
3263                             const char *val)
3264 {
3265     ZOOM_options_set(p->options, key, val);
3266 }
3267
3268 static int ZOOM_connection_exec_task(ZOOM_connection c)
3269 {
3270     ZOOM_task task = c->tasks;
3271     zoom_ret ret = zoom_complete;
3272
3273     if (!task)
3274         return 0;
3275     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3276             c, task->which, task->running);
3277     if (c->error != ZOOM_ERROR_NONE)
3278     {
3279         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3280                 "removing tasks because of error = %d", c, c->error);
3281         ZOOM_connection_remove_tasks(c);
3282         return 0;
3283     }
3284     if (task->running)
3285     {
3286         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3287                 "task already running", c);
3288         return 0;
3289     }
3290     task->running = 1;
3291     ret = zoom_complete;
3292     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3293     {
3294         switch (task->which)
3295         {
3296         case ZOOM_TASK_SEARCH:
3297             if (c->proto == PROTO_HTTP)
3298                 ret = ZOOM_connection_srw_send_search(c);
3299             else
3300                 ret = ZOOM_connection_send_search(c);
3301             break;
3302         case ZOOM_TASK_RETRIEVE:
3303             if (c->proto == PROTO_HTTP)
3304                 ret = ZOOM_connection_srw_send_search(c);
3305             else
3306                 ret = send_present(c);
3307             break;
3308         case ZOOM_TASK_CONNECT:
3309             ret = do_connect(c);
3310             break;
3311         case ZOOM_TASK_SCAN:
3312             ret = send_scan(c);
3313             break;
3314         case ZOOM_TASK_PACKAGE:
3315             ret = send_package(c);
3316             break;
3317         case ZOOM_TASK_SORT:
3318             c->tasks->u.sort.resultset->r_sort_spec =
3319                 c->tasks->u.sort.q->sort_spec;
3320             ret = send_sort(c, c->tasks->u.sort.resultset);
3321             break;
3322         }
3323     }
3324     else
3325     {
3326         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3327                 "remove tasks because no connection exist", c);
3328         ZOOM_connection_remove_tasks(c);
3329     }
3330     if (ret == zoom_complete)
3331     {
3332         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3333                 "task removed (complete)", c);
3334         ZOOM_connection_remove_task(c);
3335         return 0;
3336     }
3337     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3338             "task pending", c);
3339     return 1;
3340 }
3341
3342 static zoom_ret send_sort_present(ZOOM_connection c)
3343 {
3344     zoom_ret r = zoom_complete;
3345
3346     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3347         r = send_sort(c, c->tasks->u.search.resultset);
3348     if (r == zoom_complete)
3349         r = send_present(c);
3350     return r;
3351 }
3352
3353 static int es_response(ZOOM_connection c,
3354                        Z_ExtendedServicesResponse *res)
3355 {
3356     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3357         return 0;
3358     if (res->diagnostics && res->num_diagnostics > 0)
3359         response_diag(c, res->diagnostics[0]);
3360     if (res->taskPackage &&
3361         res->taskPackage->which == Z_External_extendedService)
3362     {
3363         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3364         Odr_oct *id = taskPackage->targetReference;
3365
3366         if (id)
3367             ZOOM_options_setl(c->tasks->u.package->options,
3368                               "targetReference", (char*) id->buf, id->len);
3369     }
3370     if (res->taskPackage &&
3371         res->taskPackage->which == Z_External_octet)
3372     {
3373         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3374         ZOOM_options_setl(c->tasks->u.package->options,
3375                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3376     }
3377     return 1;
3378 }
3379
3380 static void interpret_init_diag(ZOOM_connection c,
3381                                 Z_DiagnosticFormat *diag)
3382 {
3383     if (diag->num > 0)
3384     {
3385         Z_DiagnosticFormat_s *ds = diag->elements[0];
3386         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3387             response_default_diag(c, ds->u.defaultDiagRec);
3388     }
3389 }
3390
3391
3392 static void interpret_otherinformation_field(ZOOM_connection c,
3393                                              Z_OtherInformation *ui)
3394 {
3395     int i;
3396     for (i = 0; i < ui->num_elements; i++)
3397     {
3398         Z_OtherInformationUnit *unit = ui->list[i];
3399         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3400             unit->information.externallyDefinedInfo &&
3401             unit->information.externallyDefinedInfo->which ==
3402             Z_External_diag1)
3403         {
3404             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3405         }
3406     }
3407 }
3408
3409
3410 static void set_init_option(const char *name, void *clientData) {
3411     ZOOM_connection c = clientData;
3412     char buf[80];
3413
3414     sprintf(buf, "init_opt_%.70s", name);
3415     ZOOM_connection_option_set(c, buf, "1");
3416 }
3417
3418
3419 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3420 {
3421     Z_InitResponse *initrs;
3422
3423     ZOOM_connection_set_mask(c, 0);
3424     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3425     switch(apdu->which)
3426     {
3427     case Z_APDU_initResponse:
3428         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3429         initrs = apdu->u.initResponse;
3430         ZOOM_connection_option_set(c, "serverImplementationId",
3431                                    initrs->implementationId ?
3432                                    initrs->implementationId : "");
3433         ZOOM_connection_option_set(c, "serverImplementationName",
3434                                    initrs->implementationName ?
3435                                    initrs->implementationName : "");
3436         ZOOM_connection_option_set(c, "serverImplementationVersion",
3437                                    initrs->implementationVersion ?
3438                                    initrs->implementationVersion : "");
3439         /* Set the three old options too, for old applications */
3440         ZOOM_connection_option_set(c, "targetImplementationId",
3441                                    initrs->implementationId ?
3442                                    initrs->implementationId : "");
3443         ZOOM_connection_option_set(c, "targetImplementationName",
3444                                    initrs->implementationName ?
3445                                    initrs->implementationName : "");
3446         ZOOM_connection_option_set(c, "targetImplementationVersion",
3447                                    initrs->implementationVersion ?
3448                                    initrs->implementationVersion : "");
3449
3450         /* Make initrs->options available as ZOOM-level options */
3451         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3452
3453         if (!*initrs->result)
3454         {
3455             Z_External *uif = initrs->userInformationField;
3456
3457             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3458
3459             if (uif && uif->which == Z_External_userInfo1)
3460                 interpret_otherinformation_field(c, uif->u.userInfo1);
3461         }
3462         else
3463         {
3464             char *cookie =
3465                 yaz_oi_get_string_oidval(&apdu->u.initResponse->otherInfo,
3466                                          VAL_COOKIE, 1, 0);
3467             xfree(c->cookie_in);
3468             c->cookie_in = 0;
3469             if (cookie)
3470                 c->cookie_in = xstrdup(cookie);
3471             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3472                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3473                 c->support_named_resultsets = 1;
3474             if (c->tasks)
3475             {
3476                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3477                 ZOOM_connection_remove_task(c);
3478             }
3479             ZOOM_connection_exec_task(c);
3480         }
3481         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3482         {
3483             NMEM tmpmem = nmem_create();
3484             Z_CharSetandLanguageNegotiation *p =
3485                 yaz_get_charneg_record(initrs->otherInfo);
3486
3487             if (p)
3488             {
3489                 char *charset = NULL, *lang = NULL;
3490                 int sel;
3491
3492                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3493                 yaz_log(log_details, "%p recv_apdu target accepted: "
3494                         "charset %s, language %s, select %d",
3495                         c,
3496                         charset ? charset : "none", lang ? lang : "none", sel);
3497                 if (charset)
3498                     ZOOM_connection_option_set(c, "negotiation-charset",
3499                                                charset);
3500                 if (lang)
3501                     ZOOM_connection_option_set(c, "negotiation-lang",
3502                                                lang);
3503
3504                 ZOOM_connection_option_set(
3505                     c,  "negotiation-charset-in-effect-for-records",
3506                     (sel != 0) ? "1" : "0");
3507                 nmem_destroy(tmpmem);
3508             }
3509         }
3510         break;
3511     case Z_APDU_searchResponse:
3512         yaz_log(log_api, "%p recv_apdu Search response", c);
3513         handle_search_response(c, apdu->u.searchResponse);
3514         if (send_sort_present(c) == zoom_complete)
3515             ZOOM_connection_remove_task(c);
3516         break;
3517     case Z_APDU_presentResponse:
3518         yaz_log(log_api, "%p recv_apdu Present response", c);
3519         handle_present_response(c, apdu->u.presentResponse);
3520         if (send_present(c) == zoom_complete)
3521             ZOOM_connection_remove_task(c);
3522         break;
3523     case Z_APDU_sortResponse:
3524         yaz_log(log_api, "%p recv_apdu Sort response", c);
3525         sort_response(c, apdu->u.sortResponse);
3526         if (send_present(c) == zoom_complete)
3527             ZOOM_connection_remove_task(c);
3528         break;
3529     case Z_APDU_scanResponse:
3530         yaz_log(log_api, "%p recv_apdu Scan response", c);
3531         scan_response(c, apdu->u.scanResponse);
3532         ZOOM_connection_remove_task(c);
3533         break;
3534     case Z_APDU_extendedServicesResponse:
3535         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3536         es_response(c, apdu->u.extendedServicesResponse);
3537         ZOOM_connection_remove_task(c);
3538         break;
3539     case Z_APDU_close:
3540         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3541         if (!ZOOM_test_reconnect(c))
3542         {
3543             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3544             do_close(c);
3545         }
3546         break;
3547     default:
3548         yaz_log(log_api, "%p Received unknown PDU", c);
3549         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3550         do_close(c);
3551     }
3552 }
3553
3554 #if YAZ_HAVE_XML2
3555 static void handle_srw_response(ZOOM_connection c,
3556                                 Z_SRW_searchRetrieveResponse *res)
3557 {
3558     ZOOM_resultset resultset = 0;
3559     int i;
3560     NMEM nmem;
3561     ZOOM_Event event;
3562     int *start;
3563     const char *syntax, *elementSetName;
3564
3565     if (!c->tasks)
3566         return;
3567
3568     switch(c->tasks->which)
3569     {
3570     case ZOOM_TASK_SEARCH:
3571         resultset = c->tasks->u.search.resultset;
3572         start = &c->tasks->u.search.start;
3573         syntax = c->tasks->u.search.syntax;
3574         elementSetName = c->tasks->u.search.elementSetName;
3575         break;
3576     case ZOOM_TASK_RETRIEVE:
3577         resultset = c->tasks->u.retrieve.resultset;
3578         start = &c->tasks->u.retrieve.start;
3579         syntax = c->tasks->u.retrieve.syntax;
3580         elementSetName = c->tasks->u.retrieve.elementSetName;
3581         break;
3582     default:
3583         return;
3584     }
3585     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3586     ZOOM_connection_put_event(c, event);
3587
3588     resultset->size = 0;
3589
3590     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3591
3592     if (res->numberOfRecords)
3593         resultset->size = *res->numberOfRecords;
3594
3595     for (i = 0; i<res->num_records; i++)
3596     {
3597         int pos;
3598
3599         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3600             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3601
3602         if (res->records[i].recordPosition &&
3603             *res->records[i].recordPosition > 0)
3604             pos = *res->records[i].recordPosition - 1;
3605         else
3606             pos = *start + i;
3607
3608         npr->databaseName = 0;
3609         npr->which = Z_NamePlusRecord_databaseRecord;
3610         npr->u.databaseRecord = (Z_External *)
3611             odr_malloc(c->odr_in, sizeof(Z_External));
3612         npr->u.databaseRecord->descriptor = 0;
3613         npr->u.databaseRecord->direct_reference =
3614             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3615         npr->u.databaseRecord->which = Z_External_octet;
3616
3617         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3618             odr_malloc(c->odr_in, sizeof(Odr_oct));
3619         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3620             res->records[i].recordData_buf;
3621         npr->u.databaseRecord->u.octet_aligned->len =
3622             npr->u.databaseRecord->u.octet_aligned->size =
3623             res->records[i].recordData_len;
3624         record_cache_add(resultset, npr, pos, syntax, elementSetName);
3625     }
3626     if (res->num_diagnostics > 0)
3627     {
3628         const char *uri = res->diagnostics[0].uri;
3629         if (uri)
3630         {
3631             int code = 0;
3632             const char *cp;
3633             if ((cp = strrchr(uri, '/')))
3634                 code = atoi(cp+1);
3635             set_dset_error(c, code, uri,
3636                            res->diagnostics[0].details, 0);
3637         }
3638     }
3639     nmem = odr_extract_mem(c->odr_in);
3640     nmem_transfer(resultset->odr->mem, nmem);
3641     nmem_destroy(nmem);
3642 }
3643 #endif
3644
3645 #if YAZ_HAVE_XML2
3646 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3647 {
3648     int ret = -1;
3649     const char *content_type = z_HTTP_header_lookup(hres->headers,
3650                                                     "Content-Type");
3651     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3652                                                        "Connection");
3653     ZOOM_connection_set_mask(c, 0);
3654     yaz_log(log_details, "%p handle_http", c);
3655
3656     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3657     {
3658         Z_SOAP *soap_package = 0;
3659         ODR o = c->odr_in;
3660         Z_SOAP_Handler soap_handlers[2] = {
3661             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
3662             {0, 0, 0}
3663         };
3664         ret = z_soap_codec(o, &soap_package,
3665                            &hres->content_buf, &hres->content_len,
3666                            soap_handlers);
3667         if (!ret && soap_package->which == Z_SOAP_generic &&
3668             soap_package->u.generic->no == 0)
3669         {
3670             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3671             if (sr->which == Z_SRW_searchRetrieve_response)
3672                 handle_srw_response(c, sr->u.response);
3673             else
3674                 ret = -1;
3675         }
3676         else if (!ret && (soap_package->which == Z_SOAP_fault
3677                           || soap_package->which == Z_SOAP_error))
3678         {
3679             set_HTTP_error(c, hres->code,
3680                            soap_package->u.fault->fault_code,
3681                            soap_package->u.fault->fault_string);
3682         }
3683         else
3684             ret = -1;
3685     }
3686     if (ret)
3687     {
3688         if (hres->code != 200)
3689             set_HTTP_error(c, hres->code, 0, 0);
3690         else
3691             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3692         do_close(c);
3693     }
3694     ZOOM_connection_remove_task(c);
3695     if (!strcmp(hres->version, "1.0"))
3696     {
3697         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3698         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3699             do_close(c);
3700     }
3701     else
3702     {
3703         /* HTTP 1.1: only if no close we stay alive .. */
3704         if (connection_head && !strcmp(connection_head, "close"))
3705             do_close(c);
3706     }
3707 }
3708 #endif
3709
3710 static int do_read(ZOOM_connection c)
3711 {
3712     int r, more;
3713     ZOOM_Event event;
3714
3715     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
3716     ZOOM_connection_put_event(c, event);
3717
3718     r = cs_get(c->cs, &c->buf_in, &c->len_in);
3719     more = cs_more(c->cs);
3720     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3721     if (r == 1)
3722         return 0;
3723     if (r <= 0)
3724     {
3725         if (ZOOM_test_reconnect(c))
3726         {
3727             yaz_log(log_details, "%p do_read reconnect read", c);
3728         }
3729         else
3730         {
3731             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3732             do_close(c);
3733         }
3734     }
3735     else
3736     {
3737         Z_GDU *gdu;
3738         ZOOM_Event event;
3739
3740         odr_reset(c->odr_in);
3741         odr_setbuf(c->odr_in, c->buf_in, r, 0);
3742         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
3743         ZOOM_connection_put_event(c, event);
3744
3745         if (!z_GDU(c->odr_in, &gdu, 0, 0))
3746         {
3747             int x;
3748             int err = odr_geterrorx(c->odr_in, &x);
3749             char msg[60];
3750             const char *element = odr_getelement(c->odr_in);
3751             sprintf(msg, "ODR code %d:%d element=%-20s",
3752                     err, x, element ? element : "<unknown>");
3753             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3754             do_close(c);
3755         }
3756         else if (gdu->which == Z_GDU_Z3950)
3757             recv_apdu(c, gdu->u.z3950);
3758         else if (gdu->which == Z_GDU_HTTP_Response)
3759         {
3760 #if YAZ_HAVE_XML2
3761             handle_http(c, gdu->u.HTTP_Response);
3762 #else
3763             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3764             do_close(c);
3765 #endif
3766         }
3767         c->reconnect_ok = 0;
3768     }
3769     return 1;
3770 }
3771
3772 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
3773 {
3774     int r;
3775     ZOOM_Event event;
3776
3777     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3778     ZOOM_connection_put_event(c, event);
3779
3780     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3781     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3782     {
3783         yaz_log(log_details, "%p do_write_ex write failed", c);
3784         if (ZOOM_test_reconnect(c))
3785         {
3786             return zoom_pending;
3787         }
3788         if (c->state == STATE_CONNECTING)
3789             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3790         else
3791             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3792         do_close(c);
3793         return zoom_complete;
3794     }
3795     else if (r == 1)
3796     {
3797         int mask = ZOOM_SELECT_EXCEPT;
3798         if (c->cs->io_pending & CS_WANT_WRITE)
3799             mask += ZOOM_SELECT_WRITE;
3800         if (c->cs->io_pending & CS_WANT_READ)
3801             mask += ZOOM_SELECT_READ;
3802         ZOOM_connection_set_mask(c, mask);
3803         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3804                 c, c->mask);
3805     }
3806     else
3807     {
3808         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
3809         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3810                 c, c->mask);
3811     }
3812     return zoom_pending;
3813 }
3814
3815 static zoom_ret do_write(ZOOM_connection c)
3816 {
3817     return do_write_ex(c, c->buf_out, c->len_out);
3818 }
3819
3820
3821 ZOOM_API(const char *)
3822     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
3823 {
3824     return ZOOM_options_get(c->options, key);
3825 }
3826
3827 ZOOM_API(const char *)
3828     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
3829 {
3830     return ZOOM_options_getl(c->options, key, lenp);
3831 }
3832
3833 ZOOM_API(void)
3834     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
3835                                const char *val)
3836 {
3837     ZOOM_options_set(c->options, key, val);
3838 }
3839
3840 ZOOM_API(void)
3841     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
3842                                 const char *val, int len)
3843 {
3844     ZOOM_options_setl(c->options, key, val, len);
3845 }
3846
3847 ZOOM_API(const char *)
3848     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
3849 {
3850     return ZOOM_options_get(r->options, key);
3851 }
3852
3853 ZOOM_API(void)
3854     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
3855                               const char *val)
3856 {
3857     ZOOM_options_set(r->options, key, val);
3858 }
3859
3860
3861 ZOOM_API(int)
3862     ZOOM_connection_errcode(ZOOM_connection c)
3863 {
3864     return ZOOM_connection_error(c, 0, 0);
3865 }
3866
3867 ZOOM_API(const char *)
3868     ZOOM_connection_errmsg(ZOOM_connection c)
3869 {
3870     const char *msg;
3871     ZOOM_connection_error(c, &msg, 0);
3872     return msg;
3873 }
3874
3875 ZOOM_API(const char *)
3876     ZOOM_connection_addinfo(ZOOM_connection c)
3877 {
3878     const char *addinfo;
3879     ZOOM_connection_error(c, 0, &addinfo);
3880     return addinfo;
3881 }
3882
3883 ZOOM_API(const char *)
3884     ZOOM_connection_diagset(ZOOM_connection c)
3885 {
3886     const char *diagset;
3887     ZOOM_connection_error_x(c, 0, 0, &diagset);
3888     return diagset;
3889 }
3890
3891 ZOOM_API(const char *)
3892     ZOOM_diag_str(int error)
3893 {
3894     switch (error)
3895     {
3896     case ZOOM_ERROR_NONE:
3897         return "No error";
3898     case ZOOM_ERROR_CONNECT:
3899         return "Connect failed";
3900     case ZOOM_ERROR_MEMORY:
3901         return "Out of memory";
3902     case ZOOM_ERROR_ENCODE:
3903         return "Encoding failed";
3904     case ZOOM_ERROR_DECODE:
3905         return "Decoding failed";
3906     case ZOOM_ERROR_CONNECTION_LOST:
3907         return "Connection lost";
3908     case ZOOM_ERROR_INIT:
3909         return "Init rejected";
3910     case ZOOM_ERROR_INTERNAL:
3911         return "Internal failure";
3912     case ZOOM_ERROR_TIMEOUT:
3913         return "Timeout";
3914     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3915         return "Unsupported protocol";
3916     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3917         return "Unsupported query type";
3918     case ZOOM_ERROR_INVALID_QUERY:
3919         return "Invalid query";
3920     case ZOOM_ERROR_CQL_PARSE:
3921         return "CQL parsing error";
3922     case ZOOM_ERROR_CQL_TRANSFORM:
3923         return "CQL transformation error";
3924     case ZOOM_ERROR_CCL_CONFIG:
3925         return "CCL configuration error";
3926     case ZOOM_ERROR_CCL_PARSE:
3927         return "CCL parsing error";
3928     default:
3929         return diagbib1_str(error);
3930     }
3931 }
3932
3933 ZOOM_API(int)
3934     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
3935                             const char **addinfo, const char **diagset)
3936 {
3937     int error = c->error;
3938     if (cp)
3939     {
3940         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3941             *cp = ZOOM_diag_str(error);
3942         else if (!strcmp(c->diagset, "HTTP"))
3943             *cp = z_HTTP_errmsg(c->error);
3944         else if (!strcmp(c->diagset, "Bib-1"))
3945             *cp = ZOOM_diag_str(error);
3946         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3947             *cp = yaz_diag_srw_str(c->error);
3948         else
3949             *cp = "Unknown error and diagnostic set";
3950     }
3951     if (addinfo)
3952         *addinfo = c->addinfo ? c->addinfo : "";
3953     if (diagset)
3954         *diagset = c->diagset ? c->diagset : "";
3955     return c->error;
3956 }
3957
3958 ZOOM_API(int)
3959     ZOOM_connection_error(ZOOM_connection c, const char **cp,
3960                           const char **addinfo)
3961 {
3962     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3963 }
3964
3965 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
3966 {
3967     ZOOM_Event event = 0;
3968     int r = cs_look(c->cs);
3969     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3970             c, mask, r);
3971
3972     if (r == CS_NONE)
3973     {
3974         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
3975         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3976         do_close(c);
3977         ZOOM_connection_put_event(c, event);
3978     }
3979     else if (r == CS_CONNECT)
3980     {
3981         int ret = ret = cs_rcvconnect(c->cs);
3982         yaz_log(log_details, "%p ZOOM_connection_do_io "
3983                 "cs_rcvconnect returned %d", c, ret);
3984         if (ret == 1)
3985         {
3986             int mask = ZOOM_SELECT_EXCEPT;
3987             if (c->cs->io_pending & CS_WANT_WRITE)
3988                 mask += ZOOM_SELECT_WRITE;
3989             if (c->cs->io_pending & CS_WANT_READ)
3990                 mask += ZOOM_SELECT_READ;
3991             ZOOM_connection_set_mask(c, mask);
3992         }
3993         else if (ret == 0)
3994         {
3995             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
3996             ZOOM_connection_put_event(c, event);
3997             get_cert(c);
3998             if (c->proto == PROTO_Z3950)
3999                 ZOOM_connection_send_init(c);
4000             else
4001             {
4002                 /* no init request for SRW .. */
4003                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4004                 ZOOM_connection_remove_task(c);
4005                 ZOOM_connection_set_mask(c, 0);
4006                 ZOOM_connection_exec_task(c);
4007             }
4008             c->state = STATE_ESTABLISHED;
4009         }
4010         else
4011         {
4012             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4013             do_close(c);
4014         }
4015     }
4016     else
4017     {
4018         if (mask & ZOOM_SELECT_EXCEPT)
4019         {
4020             if (ZOOM_test_reconnect(c))
4021             {
4022                 event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4023                 ZOOM_connection_put_event(c, event);
4024             }
4025             else
4026             {
4027                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4028                 do_close(c);
4029             }
4030             return;
4031         }
4032         if (mask & ZOOM_SELECT_READ)
4033             do_read(c);
4034         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4035             do_write(c);
4036     }
4037 }
4038
4039 ZOOM_API(int)
4040     ZOOM_connection_last_event(ZOOM_connection cs)
4041 {
4042     if (!cs)
4043         return ZOOM_EVENT_NONE;
4044     return cs->last_event;
4045 }
4046
4047
4048 /*
4049  * Returns an xmalloc()d string containing RPN that corresponds to the
4050  * CQL passed in.  On error, sets the Connection object's error state
4051  * and returns a null pointer.
4052  * ### We could cache CQL parser and/or transformer in Connection.
4053  */
4054 static char *cql2pqf(ZOOM_connection c, const char *cql)
4055 {
4056     CQL_parser parser;
4057     int error;
4058     struct cql_node *node;
4059     const char *cqlfile;
4060     static cql_transform_t trans;
4061     char pqfbuf[512];
4062
4063     parser = cql_parser_create();
4064     if ((error = cql_parser_string(parser, cql)) != 0) {
4065         cql_parser_destroy(parser);
4066         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4067         return 0;
4068     }
4069
4070     node = cql_parser_result(parser);
4071     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4072
4073     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4074     if (cqlfile == 0) {
4075         cql_parser_destroy(parser);
4076         cql_node_destroy(node);
4077         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4078         return 0;
4079     }
4080
4081     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4082         char buf[512];
4083         cql_parser_destroy(parser);
4084         cql_node_destroy(node);
4085         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4086                 cqlfile, strerror(errno));
4087         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4088         return 0;
4089     }
4090
4091     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4092     cql_parser_destroy(parser);
4093     cql_node_destroy(node);
4094     if (error != 0) {
4095         char buf[512];
4096         const char *addinfo;
4097         error = cql_transform_error(trans, &addinfo);
4098         cql_transform_close(trans);
4099         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4100         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4101         return 0;
4102     }
4103
4104     cql_transform_close(trans);
4105     return xstrdup(pqfbuf);
4106 }
4107
4108 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4109 {
4110     if (c->mask)
4111     {
4112         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4113         /* timeout and this connection was waiting */
4114         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4115         do_close(c);
4116         ZOOM_connection_put_event(c, event);
4117     }
4118     return 0;
4119 }
4120
4121 ZOOM_API(int)
4122     ZOOM_process_event(int no, ZOOM_connection *cs)
4123 {
4124     int i;
4125
4126     yaz_log(log_details, "ZOOM_event_poll(no=%d,cs=%p)", no, cs);
4127
4128     for (i = 0; i<no; i++)
4129     {
4130         ZOOM_connection c = cs[i];
4131         ZOOM_Event event;
4132
4133 #if 0
4134         if (c)
4135             ZOOM_connection_show_tasks(c);
4136 #endif
4137
4138         if (c && (event = ZOOM_connection_get_event(c)))
4139         {
4140             ZOOM_Event_destroy(event);
4141             return i+1;
4142         }
4143     }
4144     for (i = 0; i<no; i++)
4145     {
4146         ZOOM_connection c = cs[i];
4147         if (c)
4148         {
4149             ZOOM_Event event;
4150             ZOOM_connection_exec_task(c);
4151             if ((event = ZOOM_connection_get_event(c)))
4152             {
4153                 ZOOM_Event_destroy(event);
4154                 return i+1;
4155             }
4156         }
4157     }
4158     return 0;
4159 }
4160
4161 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4162 {
4163     if (c->mask && mask)
4164         ZOOM_connection_do_io(c, mask);
4165     return 0;
4166 }
4167
4168 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4169 {
4170     if (c->cs)
4171         return cs_fileno(c->cs);
4172     return -1;
4173 }
4174
4175 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4176 {
4177     c->mask = mask;
4178     if (!c->cs)
4179         return -1;
4180     return 0;
4181 }
4182
4183 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4184 {
4185     if (c->cs)
4186         return c->mask;
4187     return 0;
4188 }
4189
4190 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4191 {
4192     return ZOOM_options_get_int(c->options, "timeout", 30);
4193 }
4194
4195 /*
4196  * Local variables:
4197  * c-basic-offset: 4
4198  * indent-tabs-mode: nil
4199  * End:
4200  * vim: shiftwidth=4 tabstop=8 expandtab
4201  */
4202