SimpleServer.xs

   1 /*
   2  * $Id: SimpleServer.xs,v 1.55 2006-12-22 12:27:19 sondberg Exp $
   3  * ----------------------------------------------------------------------
   4  *
   5  * Copyright (c) 2000-2004, Index Data.
   6  *
   7  * Permission to use, copy, modify, distribute, and sell this software and
   8  * its documentation, in whole or in part, for any purpose, is hereby granted,
   9  * provided that:
  10  *
  11  * 1. This copyright and permission notice appear in all copies of the
  12  * software and its documentation. Notices of copyright or attribution
  13  * which appear at the beginning of any file must remain unchanged.
  14  *
  15  * 2. The name of Index Data or the individual authors may not be used to
  16  * endorse or promote products derived from this software without specific
  17  * prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
  20  * EXPRESS, IMPLIED, OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  21  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  22  * IN NO EVENT SHALL INDEX DATA BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
  23  * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES
  24  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR
  25  * NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  26  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  27  * OF THIS SOFTWARE.
  28  */
  29
  30 #include "EXTERN.h"
  31 #include "perl.h"
  32 #include "proto.h"
  33 #include "embed.h"
  34 #include "XSUB.h"
  35 #include <yaz/backend.h>
  36 #include <yaz/log.h>
  37 #include <yaz/wrbuf.h>
  38 #include <yaz/querytowrbuf.h>
  39 #include <stdio.h>
  40 #ifdef WIN32
  41 #else
  42 #include <unistd.h>
  43 #endif
  44 #include <stdlib.h>
  45 #include <ctype.h>
  46 #define GRS_MAX_FIELDS 500
  47 #ifdef ASN_COMPILED
  48 #include <yaz/ill.h>
  49 #endif
  50 #ifndef sv_undef                /* To fix the problem with Perl 5.6.0 */
  51 #define sv_undef PL_sv_undef
  52 #endif
  53
  54 NMEM_MUTEX simpleserver_mutex;
  55
  56 typedef struct {
  57         SV *handle;
  58
  59         SV *init_ref;
  60         SV *close_ref;
  61         SV *sort_ref;
  62         SV *search_ref;
  63         SV *fetch_ref;
  64         SV *present_ref;
  65         SV *esrequest_ref;
  66         SV *delete_ref;
  67         SV *scan_ref;
  68         SV *explain_ref;
  69         NMEM nmem;
  70         int stop_flag;  /* is used to stop server prematurely .. */
  71 } Zfront_handle;
  72
  73 #define ENABLE_STOP_SERVER 0
  74
  75 SV *init_ref = NULL;
  76 SV *close_ref = NULL;
  77 SV *sort_ref = NULL;
  78 SV *search_ref = NULL;
  79 SV *fetch_ref = NULL;
  80 SV *present_ref = NULL;
  81 SV *esrequest_ref = NULL;
  82 SV *delete_ref = NULL;
  83 SV *scan_ref = NULL;
  84 SV *explain_ref = NULL;
  85 PerlInterpreter *root_perl_context;
  86 int MAX_OID = 15;
  87
  88 #define GRS_BUF_SIZE 512
  89
  90 CV * simpleserver_sv2cv(SV *handler) {
  91     STRLEN len;
  92     char *buf;
  93
  94     if (SvPOK(handler)) {
  95         CV *ret;
  96         buf = SvPV( handler, len);
  97         if ( !( ret = perl_get_cv(buf, FALSE ) ) ) {
  98             fprintf( stderr, "simpleserver_sv2cv: No such handler '%s'\n\n", buf );
  99             exit(1);
 100         }
 101
 102         return ret;
 103     } else {
 104         return (CV *) handler;
 105     }
 106 }
 107
 108 /* debugging routine to check for destruction of Perl interpreters */
 109 #ifdef USE_ITHREADS
 110 void tst_clones(void)
 111 {
 112     int i;
 113     PerlInterpreter *parent = PERL_GET_CONTEXT;
 114     for (i = 0; i<5000; i++)
 115     {
 116         PerlInterpreter *perl_interp;
 117
 118         PERL_SET_CONTEXT(parent);
 119         PL_perl_destruct_level = 2;
 120         perl_interp = perl_clone(parent, CLONEf_CLONE_HOST);
 121         PL_perl_destruct_level = 2;
 122         PERL_SET_CONTEXT(perl_interp);
 123         perl_destruct(perl_interp);
 124         perl_free(perl_interp);
 125     }
 126     exit (0);
 127 }
 128 #endif
 129
 130 int simpleserver_clone(void) {
 131 #ifdef USE_ITHREADS
 132      nmem_mutex_enter(simpleserver_mutex);
 133      if (1)
 134      {
 135          PerlInterpreter *current = PERL_GET_CONTEXT;
 136
 137          /* if current is unset, then we're in a new thread with
 138           * no Perl interpreter for it. So we must create one .
 139           * This will only happen when threaded is used..
 140           */
 141          if (!current) {
 142              PerlInterpreter *perl_interp;
 143              PERL_SET_CONTEXT( root_perl_context );
 144              perl_interp = perl_clone(root_perl_context, CLONEf_CLONE_HOST);
 145              PERL_SET_CONTEXT( perl_interp );
 146          }
 147      }
 148      nmem_mutex_leave(simpleserver_mutex);
 149 #endif
 150      return 0;
 151 }
 152
 153
 154 void simpleserver_free(void) {
 155     nmem_mutex_enter(simpleserver_mutex);
 156     if (1)
 157     {
 158         PerlInterpreter *current_interp = PERL_GET_CONTEXT;
 159
 160         /* If current Perl Interp is different from root interp, then
 161          * we're in threaded mode and we must destroy..
 162          */
 163         if (current_interp != root_perl_context) {
 164             PL_perl_destruct_level = 2;
 165             PERL_SET_CONTEXT(current_interp);
 166             perl_destruct(current_interp);
 167             perl_free(current_interp);
 168         }
 169     }
 170     nmem_mutex_leave(simpleserver_mutex);
 171 }
 172
 173
 174 Z_GenericRecord *read_grs1(char *str, ODR o)
 175 {
 176         int type, ivalue;
 177         char line[GRS_BUF_SIZE+1], *buf, *ptr, *original;
 178         char value[GRS_BUF_SIZE+1];
 179         Z_GenericRecord *r = 0;
 180
 181         original = str;
 182         r = (Z_GenericRecord *)odr_malloc(o, sizeof(*r));
 183         r->elements = (Z_TaggedElement **) odr_malloc(o, sizeof(Z_TaggedElement*) * GRS_MAX_FIELDS);
 184         r->num_elements = 0;
 185
 186         for (;;)
 187         {
 188                 Z_TaggedElement *t;
 189                 Z_ElementData *c;
 190                 int len;
 191
 192                 ptr = strchr(str, '\n');
 193                 if (!ptr) {
 194                         return r;
 195                 }
 196                 len = ptr - str;
 197                 if (len > GRS_BUF_SIZE) {
 198                     yaz_log(YLOG_WARN, "GRS string too long - truncating (%d > %d)", len, GRS_BUF_SIZE);
 199                     len = GRS_BUF_SIZE;
 200                 }
 201                 strncpy(line, str, len);
 202                 line[len] = 0;
 203                 buf = line;
 204                 str = ptr + 1;
 205                 while (*buf && isspace(*buf))
 206                         buf++;
 207                 if (*buf == '}') {
 208                         memmove(original, str, strlen(str));
 209                         return r;
 210                 }
 211                 if (sscanf(buf, "(%d,%[^)])", &type, value) != 2)
 212                 {
 213                         yaz_log(YLOG_WARN, "Bad data in '%s'", buf);
 214                         return r;
 215                 }
 216                 if (!type && *value == '0')
 217                         return r;
 218                 if (!(buf = strchr(buf, ')')))
 219                         return r;
 220                 buf++;
 221                 while (*buf && isspace(*buf))
 222                         buf++;
 223                 if (r->num_elements >= GRS_MAX_FIELDS)
 224                 {
 225                         yaz_log(YLOG_WARN, "Max number of GRS-1 elements exceeded [GRS_MAX_FIELDS=%d]", GRS_MAX_FIELDS);
 226                         exit(0);
 227                 }
 228                 r->elements[r->num_elements] = t = (Z_TaggedElement *) odr_malloc(o, sizeof(Z_TaggedElement));
 229                 t->tagType = (int *)odr_malloc(o, sizeof(int));
 230                 *t->tagType = type;
 231                 t->tagValue = (Z_StringOrNumeric *)
 232                         odr_malloc(o, sizeof(Z_StringOrNumeric));
 233                 if ((ivalue = atoi(value)))
 234                 {
 235                         t->tagValue->which = Z_StringOrNumeric_numeric;
 236                         t->tagValue->u.numeric = (int *)odr_malloc(o, sizeof(int));
 237                         *t->tagValue->u.numeric = ivalue;
 238                 }
 239                 else
 240                 {
 241                         t->tagValue->which = Z_StringOrNumeric_string;
 242                         t->tagValue->u.string = (char *)odr_malloc(o, strlen(value)+1);
 243                         strcpy(t->tagValue->u.string, value);
 244                 }
 245                 t->tagOccurrence = 0;
 246                 t->metaData = 0;
 247                 t->appliedVariant = 0;
 248                 t->content = c = (Z_ElementData *)odr_malloc(o, sizeof(Z_ElementData));
 249                 if (*buf == '{')
 250                 {
 251                         c->which = Z_ElementData_subtree;
 252                         c->u.subtree = read_grs1(str, o);
 253                 }
 254                 else
 255                 {
 256                         c->which = Z_ElementData_string;
 257                         c->u.string = odr_strdup(o, buf);
 258                 }
 259                 r->num_elements++;
 260         }
 261 }
 262
 263
 264
 265
 266 static void oid2str(Odr_oid *o, WRBUF buf)
 267 {
 268     for (; *o >= 0; o++) {
 269         char ibuf[16];
 270         sprintf(ibuf, "%d", *o);
 271         wrbuf_puts(buf, ibuf);
 272         if (o[1] > 0)
 273             wrbuf_putc(buf, '.');
 274     }
 275 }
 276
 277
 278 WRBUF zquery2pquery(Z_Query *q)
 279 {
 280     WRBUF buf = wrbuf_alloc();
 281
 282     if (q->which != Z_Query_type_1 && q->which != Z_Query_type_101)
 283         return 0;
 284     yaz_rpnquery_to_wrbuf(buf, q->u.type_1);
 285     return buf;
 286 }
 287
 288
 289 /* Lifted verbatim from Net::Z3950 yazwrap/util.c */
 290 #include <stdarg.h>
 291 void fatal(char *fmt, ...)
 292 {
 293     va_list ap;
 294
 295     fprintf(stderr, "FATAL (SimpleServer): ");
 296     va_start(ap, fmt);
 297     vfprintf(stderr, fmt, ap);
 298     va_end(ap);
 299     fprintf(stderr, "\n");
 300     abort();
 301 }
 302
 303
 304 /* Lifted verbatim from Net::Z3950 yazwrap/receive.c */
 305 /*
 306  * Creates a new Perl object of type `class'; the newly-created scalar
 307  * that is a reference to the blessed thingy `referent' is returned.
 308  */
 309 static SV *newObject(char *class, SV *referent)
 310 {
 311     HV *stash;
 312     SV *sv;
 313
 314     sv = newRV_noinc((SV*) referent);
 315     stash = gv_stashpv(class, 0);
 316     if (stash == 0)
 317         fatal("attempt to create object of undefined class '%s'", class);
 318     /*assert(stash != 0);*/
 319     sv_bless(sv, stash);
 320     return sv;
 321 }
 322
 323
 324 /* Lifted verbatim from Net::Z3950 yazwrap/receive.c */
 325 static void setMember(HV *hv, char *name, SV *val)
 326 {
 327     /* We don't increment `val's reference count -- I think this is
 328      * right because it's created with a refcount of 1, and in fact
 329      * the reference via this hash is the only reference to it in
 330      * general.
 331      */
 332     if (!hv_store(hv, name, (U32) strlen(name), val, (U32) 0))
 333         fatal("couldn't store member in hash");
 334 }
 335
 336
 337 /* Lifted verbatim from Net::Z3950 yazwrap/receive.c */
 338 static SV *translateOID(Odr_oid *x)
 339 {
 340     /* Yaz represents an OID by an int array terminated by a negative
 341      * value, typically -1; we represent it as a reference to a
 342      * blessed scalar string of "."-separated elements.
 343      */
 344     char buf[1000];
 345     int i;
 346
 347     *buf = '\0';
 348     for (i = 0; x[i] >= 0; i++) {
 349         sprintf(buf + strlen(buf), "%d", (int) x[i]);
 350         if (x[i+1] >- 0)
 351             strcat(buf, ".");
 352     }
 353
 354     /*
 355      * ### We'd like to return a blessed scalar (string) here, but of
 356      *  course you can't do that in Perl: only references can be
 357      *  blessed, so we'd have to return a _reference_ to a string, and
 358      *  bless _that_.  Better to do without the blessing, I think.
 359      */
 360     if (1) {
 361         return newSVpv(buf, 0);
 362     } else {
 363         return newObject("Net::Z3950::APDU::OID", newSVpv(buf, 0));
 364     }
 365 }
 366
 367
 368 static SV *rpn2perl(Z_RPNStructure *s)
 369 {
 370     SV *sv;
 371     HV *hv;
 372     AV *av;
 373
 374     switch (s->which) {
 375     case Z_RPNStructure_simple: {
 376         Z_Operand *o = s->u.simple;
 377         Z_AttributesPlusTerm *at;
 378         if (o->which == Z_Operand_resultSetId) {
 379             SV *sv2;
 380             /* This code causes a SIGBUS on my machine, and I have no
 381                idea why.  It seems as clear as day to me */
 382             char *rsid = (char*) o->u.resultSetId;
 383             printf("Encoding resultSetId '%s'\n", rsid);
 384             sv = newObject("Net::Z3950::RPN::RSID", (SV*) (hv = newHV()));
 385             printf("Made sv=0x%lx, hv=0x%lx\n",
 386                    (unsigned long) sv ,(unsigned long) hv);
 387             sv2 = newSVpv(rsid, strlen(rsid));
 388             setMember(hv, "id", sv2);
 389             printf("Set hv{id} to 0x%lx\n", (unsigned long) sv2);
 390             return sv;
 391         }
 392         if (o->which != Z_Operand_APT)
 393             fatal("can't handle RPN simples other than APT and RSID");
 394         at = o->u.attributesPlusTerm;
 395         if (at->term->which != Z_Term_general)
 396             fatal("can't handle RPN terms other than general");
 397
 398         sv = newObject("Net::Z3950::RPN::Term", (SV*) (hv = newHV()));
 399         if (at->attributes) {
 400             int i;
 401             SV *attrs = newObject("Net::Z3950::RPN::Attributes",
 402                                   (SV*) (av = newAV()));
 403             for (i = 0; i < at->attributes->num_attributes; i++) {
 404                 Z_AttributeElement *elem = at->attributes->attributes[i];
 405                 HV *hv2;
 406                 SV *tmp = newObject("Net::Z3950::RPN::Attribute",
 407                                     (SV*) (hv2 = newHV()));
 408                 if (elem->attributeSet)
 409                     setMember(hv2, "attributeSet",
 410                               translateOID(elem->attributeSet));
 411                 setMember(hv2, "attributeType",
 412                           newSViv(*elem->attributeType));
 413                 assert(elem->which == Z_AttributeValue_numeric);
 414                 setMember(hv2, "attributeValue",
 415                           newSViv(*elem->value.numeric));
 416                 av_push(av, tmp);
 417             }
 418             setMember(hv, "attributes", attrs);
 419         }
 420         setMember(hv, "term", newSVpv((char*) at->term->u.general->buf,
 421                                       at->term->u.general->len));
 422         return sv;
 423     }
 424     case Z_RPNStructure_complex: {
 425         SV *tmp;
 426         Z_Complex *c = s->u.complex;
 427         char *type = 0;         /* vacuous assignment satisfies gcc -Wall */
 428         switch (c->roperator->which) {
 429         case Z_Operator_and:     type = "Net::Z3950::RPN::And"; break;
 430         case Z_Operator_or:      type = "Net::Z3950::RPN::Or"; break;
 431         case Z_Operator_and_not: type = "Net::Z3950::RPN::AndNot"; break;
 432         case Z_Operator_prox:    fatal("proximity not yet supported");
 433         default: fatal("unknown RPN operator %d", (int) c->roperator->which);
 434         }
 435         sv = newObject(type, (SV*) (av = newAV()));
 436         if ((tmp = rpn2perl(c->s1)) == 0)
 437             return 0;
 438         av_push(av, tmp);
 439         if ((tmp = rpn2perl(c->s2)) == 0)
 440             return 0;
 441         av_push(av, tmp);
 442         return sv;
 443     }
 444     default: fatal("unknown RPN node type %d", (int) s->which);
 445     }
 446
 447     return 0;
 448 }
 449
 450
 451 /* Decode the Z_SortAttributes struct and store the whole thing into the
 452  * hash by reference
 453  */
 454 int simpleserver_ExpandSortAttributes (HV *sort_spec, Z_SortAttributes *sattr)
 455 {
 456     WRBUF attrset_wr = wrbuf_alloc();
 457     AV *list = newAV();
 458     Z_AttributeList *attr_list = sattr->list;
 459     int i;
 460
 461     oid2str(sattr->id, attrset_wr);
 462     hv_store(sort_spec, "ATTRSET", 7,
 463              newSVpv(attrset_wr->buf, attrset_wr->pos), 0);
 464     wrbuf_free(attrset_wr, 1);
 465
 466     hv_store(sort_spec, "SORT_ATTR", 9, newRV( sv_2mortal( (SV*) list ) ), 0);
 467
 468     for (i = 0; i < attr_list->num_attributes; i++)
 469     {
 470         Z_AttributeElement *attr = *attr_list->attributes++;
 471         HV *attr_spec = newHV();
 472
 473         av_push(list, newRV( sv_2mortal( (SV*) attr_spec ) ));
 474         hv_store(attr_spec, "ATTR_TYPE", 9, newSViv(*attr->attributeType), 0);
 475
 476         if (attr->which == Z_AttributeValue_numeric)
 477         {
 478             hv_store(attr_spec, "ATTR_VALUE", 10,
 479                      newSViv(*attr->value.numeric), 0);
 480         } else {
 481             return 0;
 482         }
 483     }
 484
 485     return 1;
 486 }
 487
 488
 489 /* Decode the Z_SortKeySpec struct and store the whole thing in a perl hash */
 490 int simpleserver_SortKeySpecToHash (HV *sort_spec, Z_SortKeySpec *spec)
 491 {
 492     Z_SortElement *element = spec->sortElement;
 493
 494     hv_store(sort_spec, "RELATION", 8, newSViv(*spec->sortRelation), 0);
 495     hv_store(sort_spec, "CASE", 4, newSViv(*spec->caseSensitivity), 0);
 496     hv_store(sort_spec, "MISSING", 7, newSViv(spec->which), 0);
 497
 498     if (element->which == Z_SortElement_generic)
 499     {
 500         Z_SortKey *key = element->u.generic;
 501
 502         if (key->which == Z_SortKey_sortField)
 503         {
 504             hv_store(sort_spec, "SORTFIELD", 9,
 505                      newSVpv((char *) key->u.sortField, 0), 0);
 506         }
 507         else if (key->which == Z_SortKey_elementSpec)
 508         {
 509             Z_Specification *zspec = key->u.elementSpec;
 510
 511             hv_store(sort_spec, "ELEMENTSPEC_TYPE", 16,
 512                      newSViv(zspec->which), 0);
 513
 514             if (zspec->which == Z_Schema_oid)
 515             {
 516                 WRBUF elementSpec = wrbuf_alloc();
 517
 518                 oid2str(zspec->schema.oid, elementSpec);
 519                 hv_store(sort_spec, "ELEMENTSPEC_VALUE", 17,
 520                          newSVpv(elementSpec->buf, elementSpec->pos), 0);
 521                 wrbuf_free(elementSpec, 1);
 522             }
 523             else if (zspec->which == Z_Schema_uri)
 524             {
 525                 hv_store(sort_spec, "ELEMENTSPEC_VALUE", 17,
 526                          newSVpv((char *) zspec->schema.uri, 0), 0);
 527             }
 528         }
 529         else if (key->which == Z_SortKey_sortAttributes)
 530         {
 531             return simpleserver_ExpandSortAttributes(sort_spec,
 532                                                      key->u.sortAttributes);
 533         }
 534         else
 535         {
 536             return 0;
 537         }
 538     }
 539     else
 540     {
 541         return 0;
 542     }
 543
 544     return 1;
 545 }
 546
 547
 548 static SV *zquery2perl(Z_Query *q)
 549 {
 550     SV *sv;
 551     HV *hv;
 552
 553     if (q->which != Z_Query_type_1 && q->which != Z_Query_type_101)
 554         return 0;
 555     sv = newObject("Net::Z3950::APDU::Query", (SV*) (hv = newHV()));
 556     if (q->u.type_1->attributeSetId)
 557         setMember(hv, "attributeSet",
 558                   translateOID(q->u.type_1->attributeSetId));
 559     setMember(hv, "query", rpn2perl(q->u.type_1->RPNStructure));
 560     return sv;
 561 }
 562
 563
 564 int bend_sort(void *handle, bend_sort_rr *rr)
 565 {
 566         HV *href;
 567         AV *aref;
 568         AV *sort_seq;
 569         SV **temp;
 570         SV *err_code;
 571         SV *err_str;
 572         SV *status;
 573         SV *point;
 574         STRLEN len;
 575         char *ptr;
 576         char *ODR_err_str;
 577         char **input_setnames;
 578         Zfront_handle *zhandle = (Zfront_handle *)handle;
 579         Z_SortKeySpecList *sort_spec = rr->sort_sequence;
 580         int i;
 581
 582         dSP;
 583         ENTER;
 584         SAVETMPS;
 585
 586         aref = newAV();
 587         input_setnames = rr->input_setnames;
 588         for (i = 0; i < rr->num_input_setnames; i++)
 589         {
 590             av_push(aref, newSVpv(*input_setnames++, 0));
 591         }
 592
 593         sort_seq = newAV();
 594         for (i = 0; i < sort_spec->num_specs; i++)
 595         {
 596             Z_SortKeySpec *spec = *sort_spec->specs++;
 597             HV *sort_spec = newHV();
 598
 599             if ( simpleserver_SortKeySpecToHash(sort_spec, spec) )
 600                 av_push(sort_seq, newRV( sv_2mortal( (SV*) sort_spec ) ));
 601             else
 602             {
 603                 rr->errcode = 207;
 604                 return 0;
 605             }
 606         }
 607
 608         href = newHV();
 609         hv_store(href, "INPUT", 5, newRV( (SV*) aref), 0);
 610         hv_store(href, "OUTPUT", 6, newSVpv(rr->output_setname, 0), 0);
 611         hv_store(href, "SEQUENCE", 8, newRV( (SV*) sort_seq), 0);
 612         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 613         hv_store(href, "STATUS", 6, newSViv(0), 0);
 614         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 615         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 616
 617         PUSHMARK(sp);
 618
 619         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 620
 621         PUTBACK;
 622
 623         perl_call_sv(sort_ref, G_SCALAR | G_DISCARD);
 624
 625         SPAGAIN;
 626
 627         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 628         err_code = newSVsv(*temp);
 629
 630         temp = hv_fetch(href, "ERR_STR", 7, 1);
 631         err_str = newSVsv(*temp);
 632
 633         temp = hv_fetch(href, "STATUS", 6, 1);
 634         status = newSVsv(*temp);
 635
 636         temp = hv_fetch(href, "HANDLE", 6, 1);
 637         point = newSVsv(*temp);
 638
 639         hv_undef(href);
 640         av_undef(aref);
 641         av_undef(sort_seq);
 642
 643         sv_free( (SV*) aref);
 644         sv_free( (SV*) href);
 645         sv_free( (SV*) sort_seq);
 646
 647         rr->errcode = SvIV(err_code);
 648         rr->sort_status = SvIV(status);
 649
 650         ptr = SvPV(err_str, len);
 651         ODR_err_str = (char *)odr_malloc(rr->stream, len + 1);
 652         strcpy(ODR_err_str, ptr);
 653         rr->errstring = ODR_err_str;
 654         zhandle->handle = point;
 655
 656         sv_free(err_code);
 657         sv_free(err_str);
 658         sv_free(status);
 659
 660         PUTBACK;
 661         FREETMPS;
 662         LEAVE;
 663
 664         return 0;
 665 }
 666
 667
 668 int bend_search(void *handle, bend_search_rr *rr)
 669 {
 670         HV *href;
 671         AV *aref;
 672         SV **temp;
 673         char *ODR_errstr;
 674         STRLEN len;
 675         int i;
 676         char **basenames;
 677         WRBUF query;
 678         char *ptr;
 679         SV *point;
 680         Zfront_handle *zhandle = (Zfront_handle *)handle;
 681         CV* handler_cv = 0;
 682         SV *rpnSV;
 683
 684         dSP;
 685         ENTER;
 686         SAVETMPS;
 687
 688         aref = newAV();
 689         basenames = rr->basenames;
 690         for (i = 0; i < rr->num_bases; i++)
 691         {
 692                 av_push(aref, newSVpv(*basenames++, 0));
 693         }
 694 #if ENABLE_STOP_SERVER
 695         if (rr->num_bases == 1 && !strcmp(rr->basenames[0], "XXstop"))
 696         {
 697                 zhandle->stop_flag = 1;
 698         }
 699 #endif
 700         href = newHV();
 701         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 702         if (rr->srw_sortKeys && *rr->srw_sortKeys)
 703             hv_store(href, "SRW_SORTKEYS", 12, newSVpv(rr->srw_sortKeys, 0), 0);
 704         hv_store(href, "REPL_SET", 8, newSViv(rr->replace_set), 0);
 705         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 706         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 707         hv_store(href, "HITS", 4, newSViv(0), 0);
 708         hv_store(href, "DATABASES", 9, newRV( (SV*) aref), 0);
 709         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 710         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 711         if ((rpnSV = zquery2perl(rr->query)) != 0) {
 712             hv_store(href, "RPN", 3, rpnSV, 0);
 713         }
 714         query = zquery2pquery(rr->query);
 715         if (query)
 716         {
 717                 hv_store(href, "QUERY", 5, newSVpv((char *)query->buf, query->pos), 0);
 718         }
 719         else if (rr->query->which == Z_Query_type_104 &&
 720                  rr->query->u.type_104->which == Z_External_CQL) {
 721             hv_store(href, "CQL", 3,
 722                      newSVpv(rr->query->u.type_104->u.cql, 0), 0);
 723         }
 724         else
 725         {
 726                 rr->errcode = 108;
 727                 return 0;
 728         }
 729         PUSHMARK(sp);
 730
 731         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 732
 733         PUTBACK;
 734
 735         handler_cv = simpleserver_sv2cv( search_ref );
 736         perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
 737
 738         SPAGAIN;
 739
 740         temp = hv_fetch(href, "HITS", 4, 1);
 741         rr->hits = SvIV(*temp);
 742
 743         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 744         rr->errcode = SvIV(*temp);
 745
 746         temp = hv_fetch(href, "ERR_STR", 7, 1);
 747         ptr = SvPV(*temp, len);
 748         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
 749         strcpy(ODR_errstr, ptr);
 750         rr->errstring = ODR_errstr;
 751
 752         temp = hv_fetch(href, "HANDLE", 6, 1);
 753         point = newSVsv(*temp);
 754
 755         hv_undef(href);
 756         av_undef(aref);
 757
 758         zhandle->handle = point;
 759         sv_free( (SV*) aref);
 760         sv_free( (SV*) href);
 761         if (query)
 762             wrbuf_free(query, 1);
 763         PUTBACK;
 764         FREETMPS;
 765         LEAVE;
 766         return 0;
 767 }
 768
 769
 770 /* ### this is worryingly similar to oid2str() */
 771 WRBUF oid2dotted(int *oid)
 772 {
 773
 774         WRBUF buf = wrbuf_alloc();
 775         int dot = 0;
 776
 777         for (; *oid != -1 ; oid++)
 778         {
 779                 char ibuf[16];
 780                 if (dot)
 781                 {
 782                         wrbuf_putc(buf, '.');
 783                 }
 784                 else
 785                 {
 786                         dot = 1;
 787                 }
 788                 sprintf(ibuf, "%d", *oid);
 789                 wrbuf_puts(buf, ibuf);
 790         }
 791         return buf;
 792 }
 793
 794
 795 int dotted2oid(char *dotted, int *buffer)
 796 {
 797         int *oid;
 798         char ibuf[16];
 799         char *ptr;
 800         int n = 0;
 801
 802         ptr = ibuf;
 803         oid = buffer;
 804         while (*dotted)
 805         {
 806                 if (*dotted == '.')
 807                 {
 808                         n++;
 809                         if (n == MAX_OID)  /* Terminate if more than MAX_OID entries */
 810                         {
 811                                 *oid = -1;
 812                                 return -1;
 813                         }
 814                         *ptr = 0;
 815                         sscanf(ibuf, "%d", oid++);
 816                         ptr = ibuf;
 817                         dotted++;
 818
 819                 }
 820                 else
 821                 {
 822                         *ptr++ = *dotted++;
 823                 }
 824         }
 825         if (n < MAX_OID)
 826         {
 827                 *ptr = 0;
 828                 sscanf(ibuf, "%d", oid++);
 829         }
 830         *oid = -1;
 831         return 0;
 832 }
 833
 834
 835 int bend_fetch(void *handle, bend_fetch_rr *rr)
 836 {
 837         HV *href;
 838         SV **temp;
 839         SV *basename;
 840         SV *record;
 841         SV *last;
 842         SV *err_code;
 843         SV *err_string;
 844         SV *sur_flag;
 845         SV *point;
 846         SV *rep_form;
 847         SV *schema = 0;
 848         char *ptr;
 849         char *ODR_record;
 850         char *ODR_basename;
 851         char *ODR_errstr;
 852         int *ODR_oid_buf;
 853         oident *oid;
 854         WRBUF oid_dotted;
 855         Zfront_handle *zhandle = (Zfront_handle *)handle;
 856         CV* handler_cv = 0;
 857
 858         Z_RecordComposition *composition;
 859         Z_ElementSetNames *simple;
 860         Z_CompSpec *complex;
 861         STRLEN length;
 862
 863         dSP;
 864         ENTER;
 865         SAVETMPS;
 866
 867         rr->errcode = 0;
 868         href = newHV();
 869         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 870         if (rr->schema)
 871                 hv_store(href, "SCHEMA", 6, newSVpv(rr->schema, 0), 0);
 872         temp = hv_store(href, "OFFSET", 6, newSViv(rr->number), 0);
 873         if (rr->request_format_raw != 0) {
 874             oid_dotted = oid2dotted(rr->request_format_raw);
 875         } else {
 876             /* Probably an SRU request: assume XML is required */
 877             oid_dotted = wrbuf_alloc();
 878             wrbuf_puts(oid_dotted, "1.2.840.10003.5.109.10");
 879         }
 880         hv_store(href, "REQ_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);
 881         hv_store(href, "REP_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);
 882         hv_store(href, "BASENAME", 8, newSVpv("", 0), 0);
 883         hv_store(href, "RECORD", 6, newSVpv("", 0), 0);
 884         hv_store(href, "LAST", 4, newSViv(0), 0);
 885         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 886         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 887         hv_store(href, "SUR_FLAG", 8, newSViv(0), 0);
 888         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 889         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 890         if (rr->comp)
 891         {
 892                 composition = rr->comp;
 893                 if (composition->which == Z_RecordComp_simple)
 894                 {
 895                         simple = composition->u.simple;
 896                         if (simple->which == Z_ElementSetNames_generic)
 897                         {
 898                                 hv_store(href, "COMP", 4, newSVpv(simple->u.generic, 0), 0);
 899                         }
 900                         else
 901                         {
 902                                 rr->errcode = 26;
 903                         }
 904                 }
 905                 else if (composition->which == Z_RecordComp_complex)
 906                 {
 907                         if (composition->u.complex->generic &&
 908
 909                                         composition->u.complex->generic &&
 910                                         composition->u.complex->generic->elementSpec &&
 911                                         composition->u.complex->generic->elementSpec->which ==
 912                                         Z_ElementSpec_elementSetName)
 913                         {
 914                                 complex = composition->u.complex;
 915                                 hv_store(href, "COMP", 4,
 916                                         newSVpv(complex->generic->elementSpec->u.elementSetName, 0), 0);
 917                         }
 918                         else
 919                         {
 920 #if 0   /* For now ignore this error, which is ubiquitous in SRU */
 921                                 fprintf(stderr, "complex is weird\n");
 922                                 rr->errcode = 26;
 923                                 return 0;
 924 #endif /*0*/
 925                         }
 926                 }
 927                 else
 928                 {
 929                         rr->errcode = 26;
 930                         return 0;
 931                 }
 932         }
 933
 934         PUSHMARK(sp);
 935
 936         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 937
 938         PUTBACK;
 939
 940         handler_cv = simpleserver_sv2cv( fetch_ref );
 941         perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
 942
 943         SPAGAIN;
 944
 945         temp = hv_fetch(href, "BASENAME", 8, 1);
 946         basename = newSVsv(*temp);
 947
 948         temp = hv_fetch(href, "RECORD", 6, 1);
 949         record = newSVsv(*temp);
 950
 951         temp = hv_fetch(href, "LAST", 4, 1);
 952         last = newSVsv(*temp);
 953
 954         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 955         err_code = newSVsv(*temp);
 956
 957         temp = hv_fetch(href, "ERR_STR", 7, 1),
 958         err_string = newSVsv(*temp);
 959
 960         temp = hv_fetch(href, "SUR_FLAG", 8, 1);
 961         sur_flag = newSVsv(*temp);
 962
 963         temp = hv_fetch(href, "REP_FORM", 8, 1);
 964         rep_form = newSVsv(*temp);
 965
 966         temp = hv_fetch(href, "SCHEMA", 6, 1);
 967         if (temp != 0) {
 968                 schema = newSVsv(*temp);
 969                 ptr = SvPV(schema, length);
 970                 if (length > 0) {
 971                         rr->schema = (char *)odr_malloc(rr->stream, length + 1);
 972                         strcpy(rr->schema, ptr);
 973                 }
 974         }
 975
 976         temp = hv_fetch(href, "HANDLE", 6, 1);
 977         point = newSVsv(*temp);
 978
 979
 980         hv_undef(href);
 981
 982         ptr = SvPV(basename, length);
 983         ODR_basename = (char *)odr_malloc(rr->stream, length + 1);
 984         strcpy(ODR_basename, ptr);
 985         rr->basename = ODR_basename;
 986
 987         ptr = SvPV(rep_form, length);
 988         ODR_oid_buf = (int *)odr_malloc(rr->stream, (MAX_OID + 1) * sizeof(int));
 989         if (dotted2oid(ptr, ODR_oid_buf) == -1)         /* Maximum number of OID elements exceeded */
 990         {
 991                 printf("Net::Z3950::SimpleServer: WARNING: OID structure too long, max length is %d\n", MAX_OID);
 992         }
 993         rr->output_format_raw = ODR_oid_buf;
 994
 995         ptr = SvPV(record, length);
 996         oid = oid_getentbyoid(ODR_oid_buf);
 997         if (oid->value == VAL_GRS1)             /* Treat GRS-1 records separately */
 998         {
 999                 rr->record = (char *) read_grs1(ptr, rr->stream);
1000                 rr->len = -1;
1001         }
1002         else
1003         {
1004                 ODR_record = (char *)odr_malloc(rr->stream, length + 1);
1005                 strcpy(ODR_record, ptr);
1006                 rr->record = ODR_record;
1007                 rr->len = length;
1008         }
1009         zhandle->handle = point;
1010         handle = zhandle;
1011         rr->last_in_set = SvIV(last);
1012
1013         if (!(rr->errcode))
1014         {
1015                 rr->errcode = SvIV(err_code);
1016                 ptr = SvPV(err_string, length);
1017                 ODR_errstr = (char *)odr_malloc(rr->stream, length + 1);
1018                 strcpy(ODR_errstr, ptr);
1019                 rr->errstring = ODR_errstr;
1020         }
1021         rr->surrogate_flag = SvIV(sur_flag);
1022
1023         wrbuf_free(oid_dotted, 1);
1024         sv_free((SV*) href);
1025         sv_free(basename);
1026         sv_free(record);
1027         sv_free(last);
1028         sv_free(err_string);
1029         sv_free(err_code),
1030         sv_free(sur_flag);
1031         sv_free(rep_form);
1032
1033         if (schema)
1034                 sv_free(schema);
1035
1036         PUTBACK;
1037         FREETMPS;
1038         LEAVE;
1039
1040         return 0;
1041 }
1042
1043
1044 int bend_present(void *handle, bend_present_rr *rr)
1045 {
1046         HV *href;
1047         SV **temp;
1048         SV *err_code;
1049         SV *err_string;
1050         SV *hits;
1051         SV *point;
1052         STRLEN len;
1053         Z_RecordComposition *composition;
1054         Z_ElementSetNames *simple;
1055         Z_CompSpec *complex;
1056         char *ODR_errstr;
1057         char *ptr;
1058         Zfront_handle *zhandle = (Zfront_handle *)handle;
1059         CV* handler_cv = 0;
1060
1061 /*      WRBUF oid_dotted; */
1062
1063         dSP;
1064         ENTER;
1065         SAVETMPS;
1066
1067         href = newHV();
1068         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1069         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1070         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
1071         hv_store(href, "START", 5, newSViv(rr->start), 0);
1072         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
1073         hv_store(href, "NUMBER", 6, newSViv(rr->number), 0);
1074         /*oid_dotted = oid2dotted(rr->request_format_raw);
1075         hv_store(href, "REQ_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);*/
1076         hv_store(href, "HITS", 4, newSViv(0), 0);
1077         hv_store(href, "PID", 3, newSViv(getpid()), 0);
1078         if (rr->comp)
1079         {
1080                 composition = rr->comp;
1081                 if (composition->which == Z_RecordComp_simple)
1082                 {
1083                         simple = composition->u.simple;
1084                         if (simple->which == Z_ElementSetNames_generic)
1085                         {
1086                                 hv_store(href, "COMP", 4, newSVpv(simple->u.generic, 0), 0);
1087                         }
1088                         else
1089                         {
1090                                 rr->errcode = 26;
1091                                 return 0;
1092                         }
1093                 }
1094                 else if (composition->which == Z_RecordComp_complex)
1095                 {
1096                         if (composition->u.complex->generic &&
1097
1098                                         composition->u.complex->generic &&
1099                                         composition->u.complex->generic->elementSpec &&
1100                                         composition->u.complex->generic->elementSpec->which ==
1101                                         Z_ElementSpec_elementSetName)
1102                         {
1103                                 complex = composition->u.complex;
1104                                 hv_store(href, "COMP", 4,
1105                                         newSVpv(complex->generic->elementSpec->u.elementSetName, 0), 0);
1106                         }
1107                         else
1108                         {
1109                                 rr->errcode = 26;
1110                                 return 0;
1111                         }
1112                 }
1113                 else
1114                 {
1115                         rr->errcode = 26;
1116                         return 0;
1117                 }
1118         }
1119
1120         PUSHMARK(sp);
1121
1122         XPUSHs(sv_2mortal(newRV( (SV*) href)));
1123
1124         PUTBACK;
1125
1126         handler_cv = simpleserver_sv2cv( present_ref );
1127         perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
1128
1129         SPAGAIN;
1130
1131         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1132         err_code = newSVsv(*temp);
1133
1134         temp = hv_fetch(href, "ERR_STR", 7, 1);
1135         err_string = newSVsv(*temp);
1136
1137         temp = hv_fetch(href, "HITS", 4, 1);
1138         hits = newSVsv(*temp);
1139
1140         temp = hv_fetch(href, "HANDLE", 6, 1);
1141         point = newSVsv(*temp);
1142
1143         PUTBACK;
1144         FREETMPS;
1145         LEAVE;
1146
1147         hv_undef(href);
1148         rr->errcode = SvIV(err_code);
1149         rr->hits = SvIV(hits);
1150
1151         ptr = SvPV(err_string, len);
1152         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
1153         strcpy(ODR_errstr, ptr);
1154         rr->errstring = ODR_errstr;
1155 /*      wrbuf_free(oid_dotted, 1);*/
1156         zhandle->handle = point;
1157         handle = zhandle;
1158         sv_free(err_code);
1159         sv_free(err_string);
1160         sv_free(hits);
1161         sv_free( (SV*) href);
1162
1163         return 0;
1164 }
1165
1166
1167 int bend_esrequest(void *handle, bend_esrequest_rr *rr)
1168 {
1169         perl_call_sv(esrequest_ref, G_VOID | G_DISCARD | G_NOARGS);
1170         return 0;
1171 }
1172
1173
1174 int bend_delete(void *handle, bend_delete_rr *rr)
1175 {
1176         perl_call_sv(delete_ref, G_VOID | G_DISCARD | G_NOARGS);
1177         return 0;
1178 }
1179
1180
1181 int bend_scan(void *handle, bend_scan_rr *rr)
1182 {
1183         HV *href;
1184         AV *aref;
1185         AV *list;
1186         AV *entries;
1187         HV *scan_item;
1188         struct scan_entry *scan_list;
1189         struct scan_entry *buffer;
1190         int *step_size = rr->step_size;
1191         int i;
1192         char **basenames;
1193         SV **temp;
1194         SV *err_code = sv_newmortal();
1195         SV *err_str = sv_newmortal();
1196         SV *point = sv_newmortal();
1197         SV *status = sv_newmortal();
1198         SV *number = sv_newmortal();
1199         char *ptr;
1200         char *ODR_errstr;
1201         STRLEN len;
1202         int term_len;
1203         SV *entries_ref;
1204         Zfront_handle *zhandle = (Zfront_handle *)handle;
1205         CV* handler_cv = 0;
1206
1207         dSP;
1208         ENTER;
1209         SAVETMPS;
1210         href = newHV();
1211         list = newAV();
1212         if (rr->term->term->which == Z_Term_general)
1213         {
1214                 term_len = rr->term->term->u.general->len;
1215                 hv_store(href, "TERM", 4, newSVpv((char*) rr->term->term->u.general->buf, term_len), 0);
1216         } else {
1217                 rr->errcode = 229;      /* Unsupported term type */
1218                 return 0;
1219         }
1220         hv_store(href, "STEP", 4, newSViv(*step_size), 0);
1221         hv_store(href, "NUMBER", 6, newSViv(rr->num_entries), 0);
1222         hv_store(href, "POS", 3, newSViv(rr->term_position), 0);
1223         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1224         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
1225         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1226         hv_store(href, "STATUS", 6, newSViv(BEND_SCAN_SUCCESS), 0);
1227         hv_store(href, "ENTRIES", 7, newRV((SV *) list), 0);
1228         aref = newAV();
1229         basenames = rr->basenames;
1230         for (i = 0; i < rr->num_bases; i++)
1231         {
1232                 av_push(aref, newSVpv(*basenames++, 0));
1233         }
1234         hv_store(href, "DATABASES", 9, newRV( (SV*) aref), 0);
1235
1236         PUSHMARK(sp);
1237
1238         XPUSHs(sv_2mortal(newRV( (SV*) href)));
1239
1240         PUTBACK;
1241
1242         handler_cv = simpleserver_sv2cv( scan_ref );
1243         perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
1244
1245         SPAGAIN;
1246
1247         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1248         err_code = newSVsv(*temp);
1249
1250         temp = hv_fetch(href, "ERR_STR", 7, 1);
1251         err_str = newSVsv(*temp);
1252
1253         temp = hv_fetch(href, "HANDLE", 6, 1);
1254         point = newSVsv(*temp);
1255
1256         temp = hv_fetch(href, "STATUS", 6, 1);
1257         status = newSVsv(*temp);
1258
1259         temp = hv_fetch(href, "NUMBER", 6, 1);
1260         number = newSVsv(*temp);
1261
1262         temp = hv_fetch(href, "ENTRIES", 7, 1);
1263         entries_ref = newSVsv(*temp);
1264
1265         PUTBACK;
1266         FREETMPS;
1267         LEAVE;
1268
1269         ptr = SvPV(err_str, len);
1270         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
1271         strcpy(ODR_errstr, ptr);
1272         rr->errstring = ODR_errstr;
1273         rr->errcode = SvIV(err_code);
1274         rr->num_entries = SvIV(number);
1275         rr->status = SvIV(status);
1276         scan_list = (struct scan_entry *) odr_malloc (rr->stream, rr->num_entries * sizeof(*scan_list));
1277         buffer = scan_list;
1278         entries = (AV *)SvRV(entries_ref);
1279         for (i = 0; i < rr->num_entries; i++)
1280         {
1281                 scan_item = (HV *)SvRV(sv_2mortal(av_shift(entries)));
1282                 temp = hv_fetch(scan_item, "TERM", 4, 1);
1283                 ptr = SvPV(*temp, len);
1284                 buffer->term = (char *) odr_malloc (rr->stream, len + 1);
1285                 strcpy(buffer->term, ptr);
1286                 temp = hv_fetch(scan_item, "OCCURRENCE", 10, 1);
1287                 buffer->occurrences = SvIV(*temp);
1288                 buffer++;
1289                 hv_undef(scan_item);
1290         }
1291         rr->entries = scan_list;
1292         zhandle->handle = point;
1293         handle = zhandle;
1294         sv_free(err_code);
1295         sv_free(err_str);
1296         sv_free(status);
1297         sv_free(number);
1298         hv_undef(href);
1299         sv_free((SV *)href);
1300         av_undef(aref);
1301         sv_free((SV *)aref);
1302         av_undef(list);
1303         sv_free((SV *)list);
1304         av_undef(entries);
1305         /*sv_free((SV *)entries);*/
1306         sv_free(entries_ref);
1307
1308         return 0;
1309 }
1310
1311 int bend_explain(void *handle, bend_explain_rr *q)
1312 {
1313         HV *href;
1314         CV *handler_cv = 0;
1315         SV **temp;
1316         char *explain;
1317         SV *explainsv;
1318         STRLEN len;
1319         Zfront_handle *zhandle = (Zfront_handle *)handle;
1320
1321         dSP;
1322         ENTER;
1323         SAVETMPS;
1324
1325         href = newHV();
1326         hv_store(href, "EXPLAIN", 7, newSVpv("", 0), 0);
1327         hv_store(href, "DATABASE", 8, newSVpv(q->database, 0), 0);
1328         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1329
1330         PUSHMARK(sp);
1331         XPUSHs(sv_2mortal(newRV((SV*) href)));
1332         PUTBACK;
1333
1334         handler_cv = simpleserver_sv2cv(explain_ref);
1335         perl_call_sv((SV*) handler_cv, G_SCALAR | G_DISCARD);
1336
1337         SPAGAIN;
1338
1339         temp = hv_fetch(href, "EXPLAIN", 7, 1);
1340         explainsv = newSVsv(*temp);
1341
1342         PUTBACK;
1343         FREETMPS;
1344         LEAVE;
1345
1346         explain = SvPV(explainsv, len);
1347         q->explain_buf = (char*) odr_malloc(q->stream, len + 1);
1348         strcpy(q->explain_buf, explain);
1349
1350         return 0;
1351 }
1352
1353 bend_initresult *bend_init(bend_initrequest *q)
1354 {
1355         int dummy = simpleserver_clone();
1356         bend_initresult *r = (bend_initresult *)
1357                 odr_malloc (q->stream, sizeof(*r));
1358         char *ptr;
1359         CV* handler_cv = 0;
1360         dSP;
1361         STRLEN len;
1362         NMEM nmem = nmem_create();
1363         Zfront_handle *zhandle =  (Zfront_handle *) nmem_malloc (nmem,
1364                         sizeof(*zhandle));
1365         SV *handle;
1366         HV *href;
1367         SV **temp;
1368
1369         ENTER;
1370         SAVETMPS;
1371
1372         zhandle->nmem = nmem;
1373         zhandle->stop_flag = 0;
1374
1375         if (sort_ref)
1376         {
1377             q->bend_sort = bend_sort;
1378         }
1379         if (search_ref)
1380         {
1381                 q->bend_search = bend_search;
1382         }
1383         if (present_ref)
1384         {
1385                 q->bend_present = bend_present;
1386         }
1387         /*q->bend_esrequest = bend_esrequest;*/
1388         /*q->bend_delete = bend_delete;*/
1389         if (fetch_ref)
1390         {
1391                 q->bend_fetch = bend_fetch;
1392         }
1393         if (scan_ref)
1394         {
1395                 q->bend_scan = bend_scan;
1396         }
1397         if (explain_ref)
1398         {
1399                 q->bend_explain = bend_explain;
1400         }
1401
1402         href = newHV();
1403         hv_store(href, "IMP_ID", 6, newSVpv("", 0), 0);
1404         hv_store(href, "IMP_NAME", 8, newSVpv("", 0), 0);
1405         hv_store(href, "IMP_VER", 7, newSVpv("", 0), 0);
1406         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1407         hv_store(href, "ERR_STR", 7, newSViv(0), 0);
1408         hv_store(href, "PEER_NAME", 9, newSVpv(q->peer_name, 0), 0);
1409         hv_store(href, "HANDLE", 6, newSVsv(&sv_undef), 0);
1410         hv_store(href, "PID", 3, newSViv(getpid()), 0);
1411         if (q->auth) {
1412             char *user = NULL;
1413             char *passwd = NULL;
1414             if (q->auth->which == Z_IdAuthentication_open) {
1415                 char *cp;
1416                 user = nmem_strdup (odr_getmem (q->stream), q->auth->u.open);
1417                 cp = strchr (user, '/');
1418                 if (cp) {
1419                     /* password after / given */
1420                     *cp = '\0';
1421                     passwd = cp+1;
1422                 }
1423             } else if (q->auth->which == Z_IdAuthentication_idPass) {
1424                 user = q->auth->u.idPass->userId;
1425                 passwd = q->auth->u.idPass->password;
1426             }
1427             /* ### some code paths have user/password unassigned here */
1428             if (user)
1429                 hv_store(href, "USER", 4, newSVpv(user, 0), 0);
1430             if (passwd)
1431                 hv_store(href, "PASS", 4, newSVpv(passwd, 0), 0);
1432         }
1433
1434         PUSHMARK(sp);
1435
1436         XPUSHs(sv_2mortal(newRV((SV*) href)));
1437
1438         PUTBACK;
1439
1440         if (init_ref != NULL)
1441         {
1442              handler_cv = simpleserver_sv2cv( init_ref );
1443              perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
1444         }
1445
1446         SPAGAIN;
1447
1448         temp = hv_fetch(href, "IMP_ID", 6, 1);
1449         ptr = SvPV(*temp, len);
1450         q->implementation_id = nmem_strdup(nmem, ptr);
1451
1452         temp = hv_fetch(href, "IMP_NAME", 8, 1);
1453         ptr = SvPV(*temp, len);
1454         q->implementation_name = nmem_strdup(nmem, ptr);
1455
1456         temp = hv_fetch(href, "IMP_VER", 7, 1);
1457         ptr = SvPV(*temp, len);
1458         q->implementation_version = nmem_strdup(nmem, ptr);
1459
1460         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1461         r->errcode = SvIV(*temp);
1462
1463         temp = hv_fetch(href, "ERR_STR", 7, 1);
1464         ptr = SvPV(*temp, len);
1465         r->errstring = (char *)odr_malloc(q->stream, len + 1);
1466         strcpy(r->errstring, ptr);
1467
1468         temp = hv_fetch(href, "HANDLE", 6, 1);
1469         handle= newSVsv(*temp);
1470         zhandle->handle = handle;
1471
1472         r->handle = zhandle;
1473
1474         hv_undef(href);
1475         sv_free((SV*) href);
1476
1477         PUTBACK;
1478         FREETMPS;
1479         LEAVE;
1480
1481         return r;
1482 }
1483
1484 void bend_close(void *handle)
1485 {
1486         HV *href;
1487         Zfront_handle *zhandle = (Zfront_handle *)handle;
1488         CV* handler_cv = 0;
1489         int stop_flag = 0;
1490         dSP;
1491         ENTER;
1492         SAVETMPS;
1493
1494         if (close_ref)
1495         {
1496                 href = newHV();
1497                 hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1498
1499                 PUSHMARK(sp);
1500
1501                 XPUSHs(sv_2mortal(newRV((SV *)href)));
1502
1503                 PUTBACK;
1504
1505                 handler_cv = simpleserver_sv2cv( close_ref );
1506                 perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
1507
1508                 SPAGAIN;
1509
1510                 sv_free((SV*) href);
1511         }
1512         else
1513                 sv_free(zhandle->handle);
1514         PUTBACK;
1515         FREETMPS;
1516         LEAVE;
1517         stop_flag = zhandle->stop_flag;
1518         nmem_destroy(zhandle->nmem);
1519         simpleserver_free();
1520
1521         if (stop_flag)
1522                 exit(0);
1523         return;
1524 }
1525
1526
1527 MODULE = Net::Z3950::SimpleServer       PACKAGE = Net::Z3950::SimpleServer
1528
1529 PROTOTYPES: DISABLE
1530
1531
1532 void
1533 set_init_handler(arg)
1534                 SV *arg
1535         CODE:
1536                 init_ref = newSVsv(arg);
1537
1538
1539 void
1540 set_close_handler(arg)
1541                 SV *arg
1542         CODE:
1543                 close_ref = newSVsv(arg);
1544
1545
1546 void
1547 set_sort_handler(arg)
1548                 SV *arg
1549         CODE:
1550                 sort_ref = newSVsv(arg);
1551
1552 void
1553 set_search_handler(arg)
1554                 SV *arg
1555         CODE:
1556                 search_ref = newSVsv(arg);
1557
1558
1559 void
1560 set_fetch_handler(arg)
1561                 SV *arg
1562         CODE:
1563                 fetch_ref = newSVsv(arg);
1564
1565
1566 void
1567 set_present_handler(arg)
1568                 SV *arg
1569         CODE:
1570                 present_ref = newSVsv(arg);
1571
1572
1573 void
1574 set_esrequest_handler(arg)
1575                 SV *arg
1576         CODE:
1577                 esrequest_ref = newSVsv(arg);
1578
1579
1580 void
1581 set_delete_handler(arg)
1582                 SV *arg
1583         CODE:
1584                 delete_ref = newSVsv(arg);
1585
1586
1587 void
1588 set_scan_handler(arg)
1589                 SV *arg
1590         CODE:
1591                 scan_ref = newSVsv(arg);
1592
1593 void
1594 set_explain_handler(arg)
1595                 SV *arg
1596         CODE:
1597                 explain_ref = newSVsv(arg);
1598
1599 int
1600 start_server(...)
1601         PREINIT:
1602                 char **argv;
1603                 char **argv_buf;
1604                 char *ptr;
1605                 int i;
1606                 STRLEN len;
1607         CODE:
1608                 argv_buf = (char **)xmalloc((items + 1) * sizeof(char *));
1609                 argv = argv_buf;
1610                 for (i = 0; i < items; i++)
1611                 {
1612                         ptr = SvPV(ST(i), len);
1613                         *argv_buf = (char *)xmalloc(len + 1);
1614                         strcpy(*argv_buf++, ptr);
1615                 }
1616                 *argv_buf = NULL;
1617                 root_perl_context = PERL_GET_CONTEXT;
1618                 nmem_mutex_create(&simpleserver_mutex);
1619 #if 0
1620                 /* only for debugging perl_clone .. */
1621                 tst_clones();
1622 #endif
1623
1624                 RETVAL = statserv_main(items, argv, bend_init, bend_close);
1625         OUTPUT:
1626                 RETVAL
1627
1628
1629 int
1630 ScanSuccess()
1631         CODE:
1632                 RETVAL = BEND_SCAN_SUCCESS;
1633         OUTPUT:
1634                 RETVAL
1635
1636 int
1637 ScanPartial()
1638         CODE:
1639                 RETVAL = BEND_SCAN_PARTIAL;
1640         OUTPUT:
1641                 RETVAL
1642
1643
1644 void
1645 yazlog(arg)
1646                 SV *arg
1647         CODE:
1648                 STRLEN len;
1649                 char *ptr;
1650                 ptr = SvPV(arg, len);
1651                 yaz_log(YLOG_LOG, "%.*s", len, ptr);