SimpleServer.xs

   1 /*
   2  * Copyright (c) 2000, Index Data.
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and
   5  * its documentation, in whole or in part, for any purpose, is hereby granted,
   6  * provided that:
   7  *
   8  * 1. This copyright and permission notice appear in all copies of the
   9  * software and its documentation. Notices of copyright or attribution
  10  * which appear at the beginning of any file must remain unchanged.
  11  *
  12  * 2. The name of Index Data or the individual authors may not be used to
  13  * endorse or promote products derived from this software without specific
  14  * prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS, IMPLIED, OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  18  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  19  * IN NO EVENT SHALL INDEX DATA BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
  20  * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES
  21  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR
  22  * NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  23  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  */
  26
  27 /*$Log: SimpleServer.xs,v $
  28 /*Revision 1.14  2002-03-05 00:34:13  mike
  29 /*Support for implementation_id (commented out until it's
  30 /*in mainstream Yaz)
  31 /*
  32 /*Revision 1.13  2002/02/28 11:21:57  mike
  33 /*Add RPN structure to search-handler argument hash.
  34 /*
  35 /*Revision 1.12  2001/08/30 14:02:10  sondberg
  36 /*Small changes.
  37 /*
  38 /*Revision 1.11  2001/08/30 13:15:11  sondberg
  39 /*Corrected a memory leak, one more to go.
  40 /*
  41 /*Revision 1.10  2001/08/29 11:48:36  sondberg
  42 /*Added routines
  43 /*
  44 /*      Net::Z3950::SimpleServer::ScanSuccess
  45 /*      Net::Z3950::SimpleServer::ScanPartial
  46 /*
  47 /*and a bit of documentation.
  48 /*
  49 /*Revision 1.9  2001/08/24 14:00:20  sondberg
  50 /*Added support for scan.
  51 /*
  52 /*Revision 1.8  2001/05/21 11:07:02  sondberg
  53 /*Extended maximum numbers of GRS-1 elements. Should be done dynamically.
  54 /*
  55 /*Revision 1.7  2001/03/13 14:17:15  sondberg
  56 /*Added support for GRS-1.
  57 /**/
  58
  59
  60 #include "EXTERN.h"
  61 #include "perl.h"
  62 #include "XSUB.h"
  63 #include <yaz/backend.h>
  64 #include <yaz/log.h>
  65 #include <yaz/wrbuf.h>
  66 #include <stdio.h>
  67 #include <unistd.h>
  68 #include <stdlib.h>
  69 #include <ctype.h>
  70 #define GRS_MAX_FIELDS 500
  71 #ifdef ASN_COMPILED
  72 #include <yaz/ill.h>
  73 #endif
  74 #ifndef sv_undef                /* To fix the problem with Perl 5.6.0 */
  75 #define sv_undef PL_sv_undef
  76 #endif
  77
  78 typedef struct {
  79         SV *handle;
  80
  81         SV *init_ref;
  82         SV *close_ref;
  83         SV *sort_ref;
  84         SV *search_ref;
  85         SV *fetch_ref;
  86         SV *present_ref;
  87         SV *esrequest_ref;
  88         SV *delete_ref;
  89         SV *scan_ref;
  90 } Zfront_handle;
  91
  92 SV *init_ref = NULL;
  93 SV *close_ref = NULL;
  94 SV *sort_ref = NULL;
  95 SV *search_ref = NULL;
  96 SV *fetch_ref = NULL;
  97 SV *present_ref = NULL;
  98 SV *esrequest_ref = NULL;
  99 SV *delete_ref = NULL;
 100 SV *scan_ref = NULL;
 101 int MAX_OID = 15;
 102
 103
 104 Z_GenericRecord *read_grs1(char *str, ODR o)
 105 {
 106         int type, ivalue;
 107         char line[512], *buf, *ptr, *original;
 108         char value[512];
 109         Z_GenericRecord *r = 0;
 110
 111         original = str;
 112         for (;;)
 113         {
 114                 Z_TaggedElement *t;
 115                 Z_ElementData *c;
 116
 117                 ptr = strchr(str, '\n');
 118                 if (!ptr) {
 119                         return r;
 120                 }
 121                 strncpy(line, str, ptr - str);
 122                 line[ptr - str] = 0;
 123                 buf = line;
 124                 str = ptr + 1;
 125                 while (*buf && isspace(*buf))
 126                         buf++;
 127                 if (*buf == '}') {
 128                         memmove(original, str, strlen(str));
 129                         return r;
 130                 }
 131                 if (sscanf(buf, "(%d,%[^)])", &type, value) != 2)
 132                 {
 133                         yaz_log(LOG_WARN, "Bad data in '%s'", buf);
 134                         return 0;
 135                 }
 136                 if (!type && *value == '0')
 137                         return r;
 138                 if (!(buf = strchr(buf, ')')))
 139                         return 0;
 140                 buf++;
 141                 while (*buf && isspace(*buf))
 142                         buf++;
 143                 if (!*buf)
 144                         return 0;
 145                 if (!r)
 146                 {
 147                         r = (Z_GenericRecord *)odr_malloc(o, sizeof(*r));
 148                         r->elements = (Z_TaggedElement **)
 149                         odr_malloc(o, sizeof(Z_TaggedElement*) * GRS_MAX_FIELDS);
 150                         r->num_elements = 0;
 151                 }
 152                 if (r->num_elements > GRS_MAX_FIELDS)
 153                 {
 154                         yaz_log(LOG_WARN, "Max number of GRS-1 elements exceeded [GRS_MAX_FIELDS=%d]", GRS_MAX_FIELDS);
 155                         exit(0);
 156                 }
 157                 r->elements[r->num_elements] = t = (Z_TaggedElement *) odr_malloc(o, sizeof(Z_TaggedElement));
 158                 t->tagType = (int *)odr_malloc(o, sizeof(int));
 159                 *t->tagType = type;
 160                 t->tagValue = (Z_StringOrNumeric *)
 161                         odr_malloc(o, sizeof(Z_StringOrNumeric));
 162                 if ((ivalue = atoi(value)))
 163                 {
 164                         t->tagValue->which = Z_StringOrNumeric_numeric;
 165                         t->tagValue->u.numeric = (int *)odr_malloc(o, sizeof(int));
 166                         *t->tagValue->u.numeric = ivalue;
 167                 }
 168                 else
 169                 {
 170                         t->tagValue->which = Z_StringOrNumeric_string;
 171                         t->tagValue->u.string = (char *)odr_malloc(o, strlen(value)+1);
 172                         strcpy(t->tagValue->u.string, value);
 173                 }
 174                 t->tagOccurrence = 0;
 175                 t->metaData = 0;
 176                 t->appliedVariant = 0;
 177                 t->content = c = (Z_ElementData *)odr_malloc(o, sizeof(Z_ElementData));
 178                 if (*buf == '{')
 179                 {
 180                         c->which = Z_ElementData_subtree;
 181                         c->u.subtree = read_grs1(str, o);
 182                 }
 183                 else
 184                 {
 185                         c->which = Z_ElementData_string;
 186 /*                      buf[strlen(buf)-1] = '\0';*/
 187                         buf[strlen(buf)] = '\0';
 188                         c->u.string = odr_strdup(o, buf);
 189                 }
 190                 r->num_elements++;
 191         }
 192 }
 193
 194
 195
 196
 197 static void oid2str(Odr_oid *o, WRBUF buf)
 198 {
 199     for (; *o >= 0; o++) {
 200         char ibuf[16];
 201         sprintf(ibuf, "%d", *o);
 202         wrbuf_puts(buf, ibuf);
 203         if (o[1] > 0)
 204             wrbuf_putc(buf, '.');
 205     }
 206 }
 207
 208
 209 static int rpn2pquery(Z_RPNStructure *s, WRBUF buf)
 210 {
 211     switch (s->which) {
 212         case Z_RPNStructure_simple: {
 213             Z_Operand *o = s->u.simple;
 214
 215             switch (o->which) {
 216                 case Z_Operand_APT: {
 217                     Z_AttributesPlusTerm *at = o->u.attributesPlusTerm;
 218
 219                     if (at->attributes) {
 220                         int i;
 221                         char ibuf[16];
 222
 223                         for (i = 0; i < at->attributes->num_attributes; i++) {
 224                             wrbuf_puts(buf, "@attr ");
 225                             if (at->attributes->attributes[i]->attributeSet) {
 226                                 oid2str(at->attributes->attributes[i]->attributeSet, buf);
 227                                 wrbuf_putc(buf, ' ');
 228                             }
 229                             sprintf(ibuf, "%d=", *at->attributes->attributes[i]->attributeType);
 230                             assert(at->attributes->attributes[i]->which == Z_AttributeValue_numeric);
 231                             wrbuf_puts(buf, ibuf);
 232                             sprintf(ibuf, "%d ", *at->attributes->attributes[i]->value.numeric);
 233                             wrbuf_puts(buf, ibuf);
 234                         }
 235                     }
 236                     switch (at->term->which) {
 237                         case Z_Term_general: {
 238                             wrbuf_putc(buf, '"');
 239                             wrbuf_write(buf, (char*) at->term->u.general->buf, at->term->u.general->len);
 240                             wrbuf_puts(buf, "\" ");
 241                             break;
 242                         }
 243                         default: abort();
 244                     }
 245                     break;
 246                 }
 247                 default: abort();
 248             }
 249             break;
 250         }
 251         case Z_RPNStructure_complex: {
 252             Z_Complex *c = s->u.complex;
 253
 254             switch (c->roperator->which) {
 255                 case Z_Operator_and: wrbuf_puts(buf, "@and "); break;
 256                 case Z_Operator_or: wrbuf_puts(buf, "@or "); break;
 257                 case Z_Operator_and_not: wrbuf_puts(buf, "@not "); break;
 258                 case Z_Operator_prox: abort();
 259                 default: abort();
 260             }
 261             if (!rpn2pquery(c->s1, buf))
 262                 return 0;
 263             if (!rpn2pquery(c->s2, buf))
 264                 return 0;
 265             break;
 266         }
 267         default: abort();
 268     }
 269     return 1;
 270 }
 271
 272
 273 WRBUF zquery2pquery(Z_Query *q)
 274 {
 275     WRBUF buf = wrbuf_alloc();
 276
 277     if (q->which != Z_Query_type_1 && q->which != Z_Query_type_101)
 278         return 0;
 279     if (q->u.type_1->attributeSetId) {
 280         /* Output attribute set ID */
 281         wrbuf_puts(buf, "@attrset ");
 282         oid2str(q->u.type_1->attributeSetId, buf);
 283         wrbuf_putc(buf, ' ');
 284     }
 285     return rpn2pquery(q->u.type_1->RPNStructure, buf) ? buf : 0;
 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 (yazwrap): ");
 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_APT)
 379             fatal("can't handle RPN simples other than APT");
 380         at = o->u.attributesPlusTerm;
 381         if (at->term->which != Z_Term_general)
 382             fatal("can't handle RPN terms other than general");
 383
 384         sv = newObject("Net::Z3950::RPN::Term", (SV*) (hv = newHV()));
 385         if (at->attributes) {
 386             int i;
 387             SV *attrs = newObject("Net::Z3950::RPN::Attributes",
 388                                   (SV*) (av = newAV()));
 389             for (i = 0; i < at->attributes->num_attributes; i++) {
 390                 Z_AttributeElement *elem = at->attributes->attributes[i];
 391                 HV *hv2;
 392                 SV *tmp = newObject("Net::Z3950::RPN::Attribute",
 393                                     (SV*) (hv2 = newHV()));
 394                 if (elem->attributeSet)
 395                     setMember(hv2, "attributeSet",
 396                               translateOID(elem->attributeSet));
 397                 setMember(hv2, "attributeType",
 398                           newSViv(*elem->attributeType));
 399                 assert(elem->which == Z_AttributeValue_numeric);
 400                 setMember(hv2, "attributeValue",
 401                           newSViv(*elem->value.numeric));
 402                 av_push(av, tmp);
 403             }
 404             setMember(hv, "attributes", attrs);
 405         }
 406         setMember(hv, "term", newSVpv((char*) at->term->u.general->buf,
 407                                       at->term->u.general->len));
 408         return sv;
 409     }
 410     case Z_RPNStructure_complex: {
 411         SV *tmp;
 412         Z_Complex *c = s->u.complex;
 413         char *type = 0;         /* vacuous assignment satisfies gcc -Wall */
 414         switch (c->roperator->which) {
 415         case Z_Operator_and:     type = "Net::Z3950::RPN::And"; break;
 416         case Z_Operator_or:      type = "Net::Z3950::RPN::Or"; break;
 417         case Z_Operator_and_not: type = "Net::Z3950::RPN::AndNot"; break;
 418         case Z_Operator_prox:    fatal("proximity not yet supported");
 419         default: fatal("unknown RPN operator %d", (int) c->roperator->which);
 420         }
 421         sv = newObject(type, (SV*) (av = newAV()));
 422         if ((tmp = rpn2perl(c->s1)) == 0)
 423             return 0;
 424         av_push(av, tmp);
 425         if ((tmp = rpn2perl(c->s2)) == 0)
 426             return 0;
 427         av_push(av, tmp);
 428         return sv;
 429     }
 430     default: fatal("unknown RPN node type %d", (int) s->which);
 431     }
 432
 433     return 0;
 434 }
 435
 436
 437 static SV *zquery2perl(Z_Query *q)
 438 {
 439     SV *sv;
 440     HV *hv;
 441
 442     if (q->which != Z_Query_type_1 && q->which != Z_Query_type_101)
 443         return 0;
 444     sv = newObject("Net::Z3950::APDU::Query", (SV*) (hv = newHV()));
 445     if (q->u.type_1->attributeSetId)
 446         setMember(hv, "attributeSet",
 447                   translateOID(q->u.type_1->attributeSetId));
 448     setMember(hv, "query", rpn2perl(q->u.type_1->RPNStructure));
 449     return sv;
 450 }
 451
 452
 453 int bend_sort(void *handle, bend_sort_rr *rr)
 454 {
 455         HV *href;
 456         AV *aref;
 457         SV **temp;
 458         SV *err_code;
 459         SV *err_str;
 460         SV *status;
 461         STRLEN len;
 462         char *ptr;
 463         char *ODR_err_str;
 464         char **input_setnames;
 465         Zfront_handle *zhandle = (Zfront_handle *)handle;
 466         int i;
 467
 468         dSP;
 469         ENTER;
 470         SAVETMPS;
 471
 472         aref = newAV();
 473         input_setnames = rr->input_setnames;
 474         for (i = 0; i < rr->num_input_setnames; i++)
 475         {
 476                 av_push(aref, newSVpv(*input_setnames++, 0));
 477         }
 478         href = newHV();
 479         hv_store(href, "INPUT", 5, newRV( (SV*) aref), 0);
 480         hv_store(href, "OUTPUT", 6, newSVpv(rr->output_setname, 0), 0);
 481         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 482         hv_store(href, "STATUS", 6, newSViv(0), 0);
 483
 484         PUSHMARK(sp);
 485
 486         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 487
 488         PUTBACK;
 489
 490         perl_call_sv(sort_ref, G_SCALAR | G_DISCARD);
 491
 492         SPAGAIN;
 493
 494         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 495         err_code = newSVsv(*temp);
 496
 497         temp = hv_fetch(href, "ERR_STR", 7, 1);
 498         err_str = newSVsv(*temp);
 499
 500         temp = hv_fetch(href, "STATUS", 6, 1);
 501         status = newSVsv(*temp);
 502
 503
 504
 505
 506         PUTBACK;
 507         FREETMPS;
 508         LEAVE;
 509
 510         hv_undef(href),
 511         av_undef(aref);
 512         rr->errcode = SvIV(err_code);
 513         rr->sort_status = SvIV(status);
 514         ptr = SvPV(err_str, len);
 515         ODR_err_str = (char *)odr_malloc(rr->stream, len + 1);
 516         strcpy(ODR_err_str, ptr);
 517         rr->errstring = ODR_err_str;
 518
 519         sv_free(err_code);
 520         sv_free(err_str);
 521         sv_free(status);
 522
 523         return 0;
 524 }
 525
 526
 527 int bend_search(void *handle, bend_search_rr *rr)
 528 {
 529         HV *href;
 530         AV *aref;
 531         SV **temp;
 532         SV *hits;
 533         SV *err_code;
 534         SV *err_str;
 535         char *ODR_errstr;
 536         STRLEN len;
 537         int i;
 538         char **basenames;
 539         int n;
 540         WRBUF query;
 541         char *ptr;
 542         SV *point;
 543         SV *ODR_point;
 544         Zfront_handle *zhandle = (Zfront_handle *)handle;
 545
 546         dSP;
 547         ENTER;
 548         SAVETMPS;
 549
 550         aref = newAV();
 551         basenames = rr->basenames;
 552         for (i = 0; i < rr->num_bases; i++)
 553         {
 554                 av_push(aref, newSVpv(*basenames++, 0));
 555         }
 556         href = newHV();
 557         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 558         hv_store(href, "REPL_SET", 8, newSViv(rr->replace_set), 0);
 559         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 560         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 561         hv_store(href, "HITS", 4, newSViv(0), 0);
 562         hv_store(href, "DATABASES", 9, newRV( (SV*) aref), 0);
 563         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 564         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 565         hv_store(href, "RPN", 3, zquery2perl(rr->query), 0);
 566         query = zquery2pquery(rr->query);
 567         if (query)
 568         {
 569                 hv_store(href, "QUERY", 5, newSVpv((char *)query->buf, query->pos), 0);
 570         }
 571         else
 572         {
 573                 rr->errcode = 108;
 574         }
 575         PUSHMARK(sp);
 576
 577         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 578
 579         PUTBACK;
 580
 581         n = perl_call_sv(search_ref, G_SCALAR | G_DISCARD);
 582
 583         SPAGAIN;
 584
 585         temp = hv_fetch(href, "HITS", 4, 1);
 586         hits = newSVsv(*temp);
 587
 588         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 589         err_code = newSVsv(*temp);
 590
 591         temp = hv_fetch(href, "ERR_STR", 7, 1);
 592         err_str = newSVsv(*temp);
 593
 594         temp = hv_fetch(href, "HANDLE", 6, 1);
 595         point = newSVsv(*temp);
 596
 597         PUTBACK;
 598         FREETMPS;
 599         LEAVE;
 600
 601         hv_undef(href);
 602         av_undef(aref);
 603         rr->hits = SvIV(hits);
 604         rr->errcode = SvIV(err_code);
 605         ptr = SvPV(err_str, len);
 606         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
 607         strcpy(ODR_errstr, ptr);
 608         rr->errstring = ODR_errstr;
 609 /*      ODR_point = (SV *)odr_malloc(rr->stream, sizeof(*point));
 610         memcpy(ODR_point, point, sizeof(*point));
 611         zhandle->handle = ODR_point;*/
 612         zhandle->handle = point;
 613         handle = zhandle;
 614         sv_free(hits);
 615         sv_free(err_code);
 616         sv_free(err_str);
 617         sv_free( (SV*) aref);
 618         sv_free( (SV*) href);
 619         /*sv_free(point);*/
 620         wrbuf_free(query, 1);
 621         return 0;
 622 }
 623
 624
 625 /* ### this is worryingly similar to oid2str() */
 626 WRBUF oid2dotted(int *oid)
 627 {
 628
 629         WRBUF buf = wrbuf_alloc();
 630         int dot = 0;
 631
 632         for (; *oid != -1 ; oid++)
 633         {
 634                 char ibuf[16];
 635                 if (dot)
 636                 {
 637                         wrbuf_putc(buf, '.');
 638                 }
 639                 else
 640                 {
 641                         dot = 1;
 642                 }
 643                 sprintf(ibuf, "%d", *oid);
 644                 wrbuf_puts(buf, ibuf);
 645         }
 646         return buf;
 647 }
 648
 649
 650 int dotted2oid(char *dotted, int *buffer)
 651 {
 652         int *oid;
 653         char ibuf[16];
 654         char *ptr;
 655         int n = 0;
 656
 657         ptr = ibuf;
 658         oid = buffer;
 659         while (*dotted)
 660         {
 661                 if (*dotted == '.')
 662                 {
 663                         n++;
 664                         if (n == MAX_OID)  /* Terminate if more than MAX_OID entries */
 665                         {
 666                                 *oid = -1;
 667                                 return -1;
 668                         }
 669                         *ptr = 0;
 670                         sscanf(ibuf, "%d", oid++);
 671                         ptr = ibuf;
 672                         dotted++;
 673
 674                 }
 675                 else
 676                 {
 677                         *ptr++ = *dotted++;
 678                 }
 679         }
 680         if (n < MAX_OID)
 681         {
 682                 *ptr = 0;
 683                 sscanf(ibuf, "%d", oid++);
 684         }
 685         *oid = -1;
 686         return 0;
 687 }
 688
 689
 690 int bend_fetch(void *handle, bend_fetch_rr *rr)
 691 {
 692         HV *href;
 693         SV **temp;
 694         SV *basename;
 695         SV *record;
 696         SV *last;
 697         SV *err_code;
 698         SV *err_string;
 699         SV *sur_flag;
 700         SV *point;
 701         SV *rep_form;
 702         char *ptr;
 703         char *ODR_record;
 704         char *ODR_basename;
 705         char *ODR_errstr;
 706         int *ODR_oid_buf;
 707         oident *oid;
 708         WRBUF oid_dotted;
 709         Zfront_handle *zhandle = (Zfront_handle *)handle;
 710
 711         Z_RecordComposition *composition;
 712         Z_ElementSetNames *simple;
 713         STRLEN length;
 714
 715         dSP;
 716         ENTER;
 717         SAVETMPS;
 718
 719         rr->errcode = 0;
 720         href = newHV();
 721         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 722         temp = hv_store(href, "OFFSET", 6, newSViv(rr->number), 0);
 723         oid_dotted = oid2dotted(rr->request_format_raw);
 724         hv_store(href, "REQ_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);
 725         hv_store(href, "REP_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);
 726         hv_store(href, "BASENAME", 8, newSVpv("", 0), 0);
 727         hv_store(href, "RECORD", 6, newSVpv("", 0), 0);
 728         hv_store(href, "LAST", 4, newSViv(0), 0);
 729         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 730         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 731         hv_store(href, "SUR_FLAG", 8, newSViv(0), 0);
 732         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 733         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 734         if (rr->comp)
 735         {
 736                 composition = rr->comp;
 737                 if (composition->which == Z_RecordComp_simple)
 738                 {
 739                         simple = composition->u.simple;
 740                         if (simple->which == Z_ElementSetNames_generic)
 741                         {
 742                                 hv_store(href, "COMP", 4, newSVpv(simple->u.generic, 0), 0);
 743                         }
 744                         else
 745                         {
 746                                 rr->errcode = 26;
 747                         }
 748                 }
 749                 else
 750                 {
 751                         rr->errcode = 26;
 752                 }
 753         }
 754
 755         PUSHMARK(sp);
 756
 757         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 758
 759         PUTBACK;
 760
 761         perl_call_sv(fetch_ref, G_SCALAR | G_DISCARD);
 762
 763         SPAGAIN;
 764
 765         temp = hv_fetch(href, "BASENAME", 8, 1);
 766         basename = newSVsv(*temp);
 767
 768         temp = hv_fetch(href, "RECORD", 6, 1);
 769         record = newSVsv(*temp);
 770
 771         temp = hv_fetch(href, "LAST", 4, 1);
 772         last = newSVsv(*temp);
 773
 774         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 775         err_code = newSVsv(*temp);
 776
 777         temp = hv_fetch(href, "ERR_STR", 7, 1),
 778         err_string = newSVsv(*temp);
 779
 780         temp = hv_fetch(href, "SUR_FLAG", 8, 1);
 781         sur_flag = newSVsv(*temp);
 782
 783         temp = hv_fetch(href, "REP_FORM", 8, 1);
 784         rep_form = newSVsv(*temp);
 785
 786         temp = hv_fetch(href, "HANDLE", 6, 1);
 787         point = newSVsv(*temp);
 788
 789         PUTBACK;
 790         FREETMPS;
 791         LEAVE;
 792
 793         hv_undef(href);
 794
 795         ptr = SvPV(basename, length);
 796         ODR_basename = (char *)odr_malloc(rr->stream, length + 1);
 797         strcpy(ODR_basename, ptr);
 798         rr->basename = ODR_basename;
 799
 800         ptr = SvPV(rep_form, length);
 801         ODR_oid_buf = (int *)odr_malloc(rr->stream, (MAX_OID + 1) * sizeof(int));
 802         if (dotted2oid(ptr, ODR_oid_buf) == -1)         /* Maximum number of OID elements exceeded */
 803         {
 804                 printf("Net::Z3950::SimpleServer: WARNING: OID structure too long, max length is %d\n", MAX_OID);
 805         }
 806         rr->output_format_raw = ODR_oid_buf;
 807
 808         ptr = SvPV(record, length);
 809         oid = oid_getentbyoid(ODR_oid_buf);
 810         if (oid->value == VAL_GRS1)             /* Treat GRS-1 records separately */
 811         {
 812                 rr->record = (char *) read_grs1(ptr, rr->stream);
 813                 rr->len = -1;
 814         }
 815         else
 816         {
 817                 ODR_record = (char *)odr_malloc(rr->stream, length + 1);
 818                 strcpy(ODR_record, ptr);
 819                 rr->record = ODR_record;
 820                 rr->len = length;
 821         }
 822         zhandle->handle = point;
 823         handle = zhandle;
 824         rr->last_in_set = SvIV(last);
 825
 826         if (!(rr->errcode))
 827         {
 828                 rr->errcode = SvIV(err_code);
 829                 ptr = SvPV(err_string, length);
 830                 ODR_errstr = (char *)odr_malloc(rr->stream, length + 1);
 831                 strcpy(ODR_errstr, ptr);
 832                 rr->errstring = ODR_errstr;
 833         }
 834         rr->surrogate_flag = SvIV(sur_flag);
 835
 836         wrbuf_free(oid_dotted, 1);
 837         sv_free((SV*) href);
 838         sv_free(basename);
 839         sv_free(record);
 840         sv_free(last);
 841         sv_free(err_string);
 842         sv_free(err_code),
 843         sv_free(sur_flag);
 844         sv_free(rep_form);
 845
 846         return 0;
 847 }
 848
 849
 850 int bend_present(void *handle, bend_present_rr *rr)
 851 {
 852
 853         HV *href;
 854         SV **temp;
 855         SV *err_code;
 856         SV *err_string;
 857         SV *hits;
 858         SV *point;
 859         STRLEN len;
 860         Z_RecordComposition *composition;
 861         Z_ElementSetNames *simple;
 862         char *ODR_errstr;
 863         char *ptr;
 864         Zfront_handle *zhandle = (Zfront_handle *)handle;
 865
 866 /*      WRBUF oid_dotted; */
 867
 868         dSP;
 869         ENTER;
 870         SAVETMPS;
 871
 872         href = newHV();
 873         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 874         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 875         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 876         hv_store(href, "START", 5, newSViv(rr->start), 0);
 877         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 878         hv_store(href, "NUMBER", 6, newSViv(rr->number), 0);
 879         /*oid_dotted = oid2dotted(rr->request_format_raw);
 880         hv_store(href, "REQ_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);*/
 881         hv_store(href, "HITS", 4, newSViv(0), 0);
 882         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 883         if (rr->comp)
 884         {
 885                 composition = rr->comp;
 886                 if (composition->which == Z_RecordComp_simple)
 887                 {
 888                         simple = composition->u.simple;
 889                         if (simple->which == Z_ElementSetNames_generic)
 890                         {
 891                                 hv_store(href, "COMP", 4, newSVpv(simple->u.generic, 0), 0);
 892                         }
 893                         else
 894                         {
 895                                 rr->errcode = 26;
 896                                 return 0;
 897                         }
 898                 }
 899                 else
 900                 {
 901                         rr->errcode = 26;
 902                         return 0;
 903                 }
 904         }
 905
 906         PUSHMARK(sp);
 907
 908         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 909
 910         PUTBACK;
 911
 912         perl_call_sv(present_ref, G_SCALAR | G_DISCARD);
 913
 914         SPAGAIN;
 915
 916         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 917         err_code = newSVsv(*temp);
 918
 919         temp = hv_fetch(href, "ERR_STR", 7, 1);
 920         err_string = newSVsv(*temp);
 921
 922         temp = hv_fetch(href, "HITS", 4, 1);
 923         hits = newSVsv(*temp);
 924
 925         temp = hv_fetch(href, "HANDLE", 6, 1);
 926         point = newSVsv(*temp);
 927
 928         PUTBACK;
 929         FREETMPS;
 930         LEAVE;
 931
 932         hv_undef(href);
 933         rr->errcode = SvIV(err_code);
 934         rr->hits = SvIV(hits);
 935
 936         ptr = SvPV(err_string, len);
 937         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
 938         strcpy(ODR_errstr, ptr);
 939         rr->errstring = ODR_errstr;
 940 /*      wrbuf_free(oid_dotted, 1);*/
 941         zhandle->handle = point;
 942         handle = zhandle;
 943         sv_free(err_code);
 944         sv_free(err_string);
 945         sv_free(hits);
 946         sv_free( (SV*) href);
 947
 948         return 0;
 949 }
 950
 951
 952 int bend_esrequest(void *handle, bend_esrequest_rr *rr)
 953 {
 954         perl_call_sv(esrequest_ref, G_VOID | G_DISCARD | G_NOARGS);
 955         return 0;
 956 }
 957
 958
 959 int bend_delete(void *handle, bend_delete_rr *rr)
 960 {
 961         perl_call_sv(delete_ref, G_VOID | G_DISCARD | G_NOARGS);
 962         return 0;
 963 }
 964
 965
 966 int bend_scan(void *handle, bend_scan_rr *rr)
 967 {
 968         HV *href;
 969         AV *aref;
 970         AV *list;
 971         AV *entries;
 972         HV *scan_item;
 973         struct scan_entry *scan_list;
 974         struct scan_entry *buffer;
 975         int *step_size = rr->step_size;
 976         int i;
 977         char **basenames;
 978         SV **temp;
 979         SV *err_code = sv_newmortal();
 980         SV *err_str = sv_newmortal();
 981         SV *point = sv_newmortal();
 982         SV *status = sv_newmortal();
 983         SV *number = sv_newmortal();
 984         char *ptr;
 985         char *ODR_errstr;
 986         STRLEN len;
 987         int term_len;
 988         SV *term_tmp;
 989         SV *entries_ref;
 990
 991         Zfront_handle *zhandle = (Zfront_handle *)handle;
 992
 993         dSP;
 994         ENTER;
 995         SAVETMPS;
 996         href = newHV();
 997         list = newAV();
 998         if (rr->term->term->which == Z_Term_general)
 999         {
1000                 term_len = rr->term->term->u.general->len;
1001                 hv_store(href, "TERM", 4, newSVpv(rr->term->term->u.general->buf, term_len), 0);
1002         } else {
1003                 rr->errcode = 229;      /* Unsupported term type */
1004                 return 0;
1005         }
1006         hv_store(href, "STEP", 4, newSViv(*step_size), 0);
1007         hv_store(href, "NUMBER", 6, newSViv(rr->num_entries), 0);
1008         hv_store(href, "POS", 3, newSViv(rr->term_position), 0);
1009         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1010         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
1011         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1012         hv_store(href, "STATUS", 6, newSViv(BEND_SCAN_SUCCESS), 0);
1013         hv_store(href, "ENTRIES", 7, newRV((SV *) list), 0);
1014         aref = newAV();
1015         basenames = rr->basenames;
1016         for (i = 0; i < rr->num_bases; i++)
1017         {
1018                 av_push(aref, newSVpv(*basenames++, 0));
1019         }
1020         hv_store(href, "DATABASES", 9, newRV( (SV*) aref), 0);
1021
1022         PUSHMARK(sp);
1023
1024         XPUSHs(sv_2mortal(newRV( (SV*) href)));
1025
1026         PUTBACK;
1027
1028         perl_call_sv(scan_ref, G_SCALAR | G_DISCARD);
1029
1030         SPAGAIN;
1031
1032         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1033         err_code = newSVsv(*temp);
1034
1035         temp = hv_fetch(href, "ERR_STR", 7, 1);
1036         err_str = newSVsv(*temp);
1037
1038         temp = hv_fetch(href, "HANDLE", 6, 1);
1039         point = newSVsv(*temp);
1040
1041         temp = hv_fetch(href, "STATUS", 6, 1);
1042         status = newSVsv(*temp);
1043
1044         temp = hv_fetch(href, "NUMBER", 6, 1);
1045         number = newSVsv(*temp);
1046
1047         temp = hv_fetch(href, "ENTRIES", 7, 1);
1048         entries_ref = newSVsv(*temp);
1049
1050         PUTBACK;
1051         FREETMPS;
1052         LEAVE;
1053
1054         ptr = SvPV(err_str, len);
1055         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
1056         strcpy(ODR_errstr, ptr);
1057         rr->errstring = ODR_errstr;
1058         rr->errcode = SvIV(err_code);
1059         rr->num_entries = SvIV(number);
1060         rr->status = SvIV(status);
1061         scan_list = (struct scan_entry *) odr_malloc (rr->stream, rr->num_entries * sizeof(*scan_list));
1062         buffer = scan_list;
1063         entries = (AV *)SvRV(entries_ref);
1064         for (i = 0; i < rr->num_entries; i++)
1065         {
1066                 scan_item = (HV *)SvRV(sv_2mortal(av_shift(entries)));
1067                 temp = hv_fetch(scan_item, "TERM", 4, 1);
1068                 ptr = SvPV(*temp, len);
1069                 buffer->term = (char *) odr_malloc (rr->stream, len + 1);
1070                 strcpy(buffer->term, ptr);
1071                 temp = hv_fetch(scan_item, "OCCURRENCE", 10, 1);
1072                 buffer->occurrences = SvIV(*temp);
1073                 buffer++;
1074                 hv_undef(scan_item);
1075         }
1076         rr->entries = scan_list;
1077         zhandle->handle = point;
1078         handle = zhandle;
1079         sv_free(err_code);
1080         sv_free(err_str);
1081         sv_free(status);
1082         sv_free(number);
1083         hv_undef(href);
1084         sv_free((SV *)href);
1085         av_undef(aref);
1086         sv_free((SV *)aref);
1087         av_undef(list);
1088         sv_free((SV *)list);
1089         av_undef(entries);
1090         /*sv_free((SV *)entries);*/
1091         sv_free(entries_ref);
1092
1093         return 0;
1094 }
1095
1096
1097 bend_initresult *bend_init(bend_initrequest *q)
1098 {
1099         bend_initresult *r = (bend_initresult *) odr_malloc (q->stream, sizeof(*r));
1100         HV *href;
1101         SV **temp;
1102         SV *id;
1103         SV *name;
1104         SV *ver;
1105         SV *err_str;
1106         SV *status;
1107         Zfront_handle *zhandle =  (Zfront_handle *) xmalloc (sizeof(*zhandle));
1108         STRLEN len;
1109         int n;
1110         SV *handle;
1111         /*char *name_ptr;
1112         char *ver_ptr;*/
1113         char *ptr;
1114
1115         dSP;
1116         ENTER;
1117         SAVETMPS;
1118
1119         /*q->bend_sort = bend_sort;*/
1120         if (search_ref)
1121         {
1122                 q->bend_search = bend_search;
1123         }
1124         if (present_ref)
1125         {
1126                 q->bend_present = bend_present;
1127         }
1128         /*q->bend_esrequest = bend_esrequest;*/
1129         /*q->bend_delete = bend_delete;*/
1130         if (fetch_ref)
1131         {
1132                 q->bend_fetch = bend_fetch;
1133         }
1134         if (scan_ref)
1135         {
1136                 q->bend_scan = bend_scan;
1137         }
1138         href = newHV();
1139         hv_store(href, "IMP_ID", 6, newSVpv("", 0), 0);
1140         hv_store(href, "IMP_NAME", 8, newSVpv("", 0), 0);
1141         hv_store(href, "IMP_VER", 7, newSVpv("", 0), 0);
1142         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1143         hv_store(href, "PEER_NAME", 9, newSVpv(q->peer_name, 0), 0);
1144         hv_store(href, "HANDLE", 6, newSVsv(&sv_undef), 0);
1145         hv_store(href, "PID", 3, newSViv(getpid()), 0);
1146
1147         PUSHMARK(sp);
1148
1149         XPUSHs(sv_2mortal(newRV( (SV*) href)));
1150
1151         PUTBACK;
1152
1153         if (init_ref != NULL)
1154         {
1155                 perl_call_sv(init_ref, G_SCALAR | G_DISCARD);
1156         }
1157
1158         SPAGAIN;
1159
1160         temp = hv_fetch(href, "IMP_ID", 6, 1);
1161         id = newSVsv(*temp);
1162
1163         temp = hv_fetch(href, "IMP_NAME", 8, 1);
1164         name = newSVsv(*temp);
1165
1166         temp = hv_fetch(href, "IMP_VER", 7, 1);
1167         ver = newSVsv(*temp);
1168
1169         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1170         status = newSVsv(*temp);
1171
1172         temp = hv_fetch(href, "HANDLE", 6, 1);
1173         handle= newSVsv(*temp);
1174
1175         hv_undef(href);
1176         PUTBACK;
1177         FREETMPS;
1178         LEAVE;
1179         zhandle->handle = handle;
1180         r->errcode = SvIV(status);
1181         r->handle = zhandle;
1182 #if 0 /* implementation_id support is not yet in mainstream Yaz */
1183         ptr = SvPV(id, len);
1184         q->implementation_id = (char *)xmalloc(len + 1);
1185         strcpy(q->implementation_id, ptr);
1186 #endif
1187         ptr = SvPV(name, len);
1188         q->implementation_name = (char *)xmalloc(len + 1);
1189         strcpy(q->implementation_name, ptr);
1190 /*      q->implementation_name = SvPV(name, len);*/
1191         ptr = SvPV(ver, len);
1192         q->implementation_version = (char *)xmalloc(len + 1);
1193         strcpy(q->implementation_version, ptr);
1194
1195         return r;
1196 }
1197
1198
1199 void bend_close(void *handle)
1200 {
1201         HV *href;
1202         Zfront_handle *zhandle = (Zfront_handle *)handle;
1203         SV **temp;
1204
1205         dSP;
1206         ENTER;
1207         SAVETMPS;
1208
1209         if (close_ref == NULL)
1210         {
1211                 return;
1212         }
1213
1214         href = newHV();
1215         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1216
1217         PUSHMARK(sp);
1218
1219         XPUSHs(sv_2mortal(newRV((SV *)href)));
1220
1221         PUTBACK;
1222
1223         perl_call_sv(close_ref, G_SCALAR | G_DISCARD);
1224
1225         SPAGAIN;
1226
1227         PUTBACK;
1228         FREETMPS;
1229         LEAVE;
1230
1231         xfree(handle);
1232
1233         return;
1234 }
1235
1236
1237 MODULE = Net::Z3950::SimpleServer       PACKAGE = Net::Z3950::SimpleServer
1238
1239 void
1240 set_init_handler(arg)
1241                 SV *arg
1242         CODE:
1243                 init_ref = newSVsv(arg);
1244
1245
1246 void
1247 set_close_handler(arg)
1248                 SV *arg
1249         CODE:
1250                 close_ref = newSVsv(arg);
1251
1252
1253 void
1254 set_sort_handler(arg)
1255                 SV *arg
1256         CODE:
1257                 sort_ref = newSVsv(arg);
1258
1259 void
1260 set_search_handler(arg)
1261                 SV *arg
1262         CODE:
1263                 search_ref = newSVsv(arg);
1264
1265
1266 void
1267 set_fetch_handler(arg)
1268                 SV *arg
1269         CODE:
1270                 fetch_ref = newSVsv(arg);
1271
1272
1273 void
1274 set_present_handler(arg)
1275                 SV *arg
1276         CODE:
1277                 present_ref = newSVsv(arg);
1278
1279
1280 void
1281 set_esrequest_handler(arg)
1282                 SV *arg
1283         CODE:
1284                 esrequest_ref = newSVsv(arg);
1285
1286
1287 void
1288 set_delete_handler(arg)
1289                 SV *arg
1290         CODE:
1291                 delete_ref = newSVsv(arg);
1292
1293
1294 void
1295 set_scan_handler(arg)
1296                 SV *arg
1297         CODE:
1298                 scan_ref = newSVsv(arg);
1299
1300
1301 int
1302 start_server(...)
1303         PREINIT:
1304                 char **argv;
1305                 char **argv_buf;
1306                 char *ptr;
1307                 int i;
1308                 STRLEN len;
1309         CODE:
1310                 argv_buf = (char **)xmalloc((items + 1) * sizeof(char *));
1311                 argv = argv_buf;
1312                 for (i = 0; i < items; i++)
1313                 {
1314                         ptr = SvPV(ST(i), len);
1315                         *argv_buf = (char *)xmalloc(len + 1);
1316                         strcpy(*argv_buf++, ptr);
1317                 }
1318                 *argv_buf = NULL;
1319
1320                 RETVAL = statserv_main(items, argv, bend_init, bend_close);
1321         OUTPUT:
1322                 RETVAL
1323
1324
1325 int
1326 ScanSuccess()
1327         CODE:
1328                 RETVAL = BEND_SCAN_SUCCESS;
1329         OUTPUT:
1330                 RETVAL
1331
1332 int
1333 ScanPartial()
1334         CODE:
1335                 RETVAL = BEND_SCAN_PARTIAL;
1336         OUTPUT:
1337                 RETVAL
1338
1339