client/client.c

   1 /*
   2  * Copyright (c) 1995, Index Data.
   3  * See the file LICENSE for details.
   4  * Sebastian Hammer, Adam Dickmeiss
   5  *
   6  * $Log: client.c,v $
   7  * Revision 1.11  1995-06-14 15:26:40  quinn
   8  * *** empty log message ***
   9  *
  10  * Revision 1.10  1995/06/06  14:56:58  quinn
  11  * Better diagnostics.
  12  *
  13  * Revision 1.9  1995/06/06  08:15:19  quinn
  14  * Cosmetic.
  15  *
  16  * Revision 1.8  1995/06/05  10:52:22  quinn
  17  * Added SCAN.
  18  *
  19  * Revision 1.7  1995/06/02  09:50:09  quinn
  20  * Smallish.
  21  *
  22  * Revision 1.6  1995/05/31  08:29:21  quinn
  23  * Nothing significant.
  24  *
  25  * Revision 1.5  1995/05/29  08:10:47  quinn
  26  * Moved oid.c to util.
  27  *
  28  * Revision 1.4  1995/05/22  15:30:13  adam
  29  * Client uses prefix query notation.
  30  *
  31  * Revision 1.3  1995/05/22  15:06:53  quinn
  32  * *** empty log message ***
  33  *
  34  * Revision 1.2  1995/05/22  14:56:40  quinn
  35  * *** empty log message ***
  36  *
  37  * Revision 1.1  1995/05/22  11:30:31  quinn
  38  * Added prettier client.
  39  *
  40  *
  41  */
  42
  43 /*
  44  * This is the obligatory little toy client, whose primary purpose is
  45  * to illustrate the use of the YAZ service-level API.
  46  */
  47
  48 #include <stdio.h>
  49 #include <stdlib.h>
  50 #include <sys/time.h>
  51 #include <assert.h>
  52 #ifdef _AIX
  53 #include <sys/select.h>
  54 #endif
  55
  56 #include <comstack.h>
  57 #include <tcpip.h>
  58 #ifdef USE_XTIMOSI
  59 #include <xmosi.h>
  60 #endif
  61
  62 #include <proto.h>
  63
  64 #include <marcdisp.h>
  65
  66 #ifdef RPN_QUERY
  67 #ifdef PREFIX_QUERY
  68 #include <pquery.h>
  69 #else
  70 #include <yaz-ccl.h>
  71 #endif
  72 #endif
  73
  74 #define C_PROMPT "Z> "
  75
  76 static ODR out, in, print;              /* encoding and decoding streams */
  77 static COMSTACK conn = 0;               /* our z-association */
  78 static Z_IdAuthentication *auth = 0;    /* our current auth definition */
  79 static char database[512] = "Default";  /* Database name */
  80 static int setnumber = 0;               /* current result set number */
  81 static int smallSetUpperBound = 0;
  82 static int largeSetLowerBound = 1;
  83 static int mediumSetPresentNumber = 0;
  84 static int setno = 1;                   /* current set offset */
  85 static int protocol = PROTO_Z3950;      /* current app protocol */
  86 static ODR_MEM session_mem;                /* memory handle for init-response */
  87 static Z_InitResponse *session = 0;        /* session parameters */
  88 static char last_scan[512] = "0";
  89 static char last_cmd[100] = "?";
  90 #ifdef RPN_QUERY
  91 #ifndef PREFIX_QUERY
  92 static CCL_bibset bibset;               /* CCL bibset handle */
  93 #endif
  94 #endif
  95
  96 static void send_apdu(Z_APDU *a)
  97 {
  98     char *buf;
  99     int len;
 100
 101     if (!z_APDU(out, &a, 0))
 102     {
 103         odr_perror(out, "Encoding APDU");
 104         exit(1);
 105     }
 106     buf = odr_getbuf(out, &len, 0);
 107     odr_reset(out); /* release the APDU */
 108     if (cs_put(conn, buf, len) < 0)
 109     {
 110         fprintf(stderr, "cs_put: %s", cs_errlist[cs_errno(conn)]);
 111         exit(1);
 112     }
 113 }
 114
 115 /* INIT SERVICE ------------------------------- */
 116
 117 static void send_initRequest()
 118 {
 119     Z_APDU *apdu = zget_APDU(out, Z_APDU_initRequest);
 120     Z_InitRequest *req = apdu->u.initRequest;
 121
 122     ODR_MASK_SET(req->options, Z_Options_search);
 123     ODR_MASK_SET(req->options, Z_Options_present);
 124     ODR_MASK_SET(req->options, Z_Options_namedResultSets);
 125     ODR_MASK_SET(req->options, Z_Options_triggerResourceCtrl);
 126     ODR_MASK_SET(req->options, Z_Options_scan);
 127
 128     ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_1);
 129     ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_2);
 130
 131     req->idAuthentication = auth;
 132
 133     send_apdu(apdu);
 134     printf("Sent initrequest.\n");
 135 }
 136
 137 static int process_initResponse(Z_InitResponse *res)
 138 {
 139     /* save session parameters for later use */
 140     session_mem = odr_extract_mem(in);
 141     session = res;
 142
 143     if (!*res->result)
 144         printf("Connection rejected by target.\n");
 145     else
 146         printf("Connection accepted by target.\n");
 147     if (res->implementationId)
 148         printf("ID     : %s\n", res->implementationId);
 149     if (res->implementationName)
 150         printf("Name   : %s\n", res->implementationName);
 151     if (res->implementationVersion)
 152         printf("Version: %s\n", res->implementationVersion);
 153     if (res->userInformationField)
 154     {
 155         printf("UserInformationfield:\n");
 156         if (!odr_external(print, (Odr_external**)&res-> userInformationField,
 157             0))
 158         {
 159             odr_perror(print, "Printing userinfo\n");
 160             odr_reset(print);
 161         }
 162         if (res->userInformationField->which == ODR_EXTERNAL_octet)
 163         {
 164             printf("Guessing visiblestring:\n");
 165             printf("'%s'\n", res->userInformationField->u. octet_aligned->buf);
 166         }
 167     }
 168     return 0;
 169 }
 170
 171 int cmd_open(char *arg)
 172 {
 173     void *add;
 174     char type[100], addr[100];
 175     CS_TYPE t;
 176
 177     if (conn)
 178     {
 179         printf("Already connected.\n");
 180         return 0;
 181     }
 182     if (!*arg || sscanf(arg, "%[^:]:%s", type, addr) < 2)
 183     {
 184         fprintf(stderr, "Usage: open (osi|tcp) ':' [tsel '/']host[':'port]\n");
 185         return 0;
 186     }
 187 #ifdef USE_XTIMOSI
 188     if (!strcmp(type, "osi"))
 189     {
 190         if (!(add = mosi_strtoaddr(addr)))
 191         {
 192             perror(arg);
 193             return 0;
 194         }
 195         t = mosi_type;
 196         protocol = PROTO_SR;
 197     }
 198     else
 199 #endif
 200     if (!strcmp(type, "tcp"))
 201     {
 202         if (!(add = tcpip_strtoaddr(addr)))
 203         {
 204             perror(arg);
 205             return 0;
 206         }
 207         t = tcpip_type;
 208         protocol = PROTO_Z3950;
 209     }
 210     else
 211     {
 212         fprintf(stderr, "Bad type: %s\n", type);
 213         return 0;
 214     }
 215     if (!(conn = cs_create(t, 1, protocol)))
 216     {
 217         perror("cs_create");
 218         return 0;
 219     }
 220     printf("Connecting...");
 221     fflush(stdout);
 222     if (cs_connect(conn, add) < 0)
 223     {
 224         perror("connect");
 225         cs_close(conn);
 226         conn = 0;
 227         return 0;
 228     }
 229     printf("Ok.\n");
 230     send_initRequest();
 231     return 2;
 232 }
 233
 234 int cmd_authentication(char *arg)
 235 {
 236     static Z_IdAuthentication au;
 237     static char open[256];
 238
 239     if (!*arg)
 240     {
 241         printf("Auth field set to null\n");
 242         auth = 0;
 243         return 1;
 244     }
 245     auth = &au;
 246     au.which = Z_IdAuthentication_open;
 247     au.u.open = open;
 248     strcpy(open, arg);
 249     return 1;
 250 }
 251
 252 /* SEARCH SERVICE ------------------------------ */
 253
 254 void display_record(Z_DatabaseRecord *p)
 255 {
 256     Odr_external *r = (Odr_external*) p;
 257
 258     if (r->direct_reference)
 259     {
 260         oident *ent = oid_getentbyoid(r->direct_reference);
 261
 262         printf("Record type: ");
 263         if (ent)
 264             printf("%s\n", ent->desc);
 265         else if (!odr_oid(print, &r->direct_reference, 0))
 266         {
 267             odr_perror(print, "print oid");
 268             odr_reset(print);
 269         }
 270     }
 271 #if 1
 272     if (r->which == ODR_EXTERNAL_octet && p->u.octet_aligned->len)
 273     {
 274 #if 1
 275         marc_display ((char*)p->u.octet_aligned->buf, stdout);
 276 #else
 277         FILE *ofi = fopen("dump", "a");
 278         assert(ofi);
 279         fwrite(p->u.octet_aligned->buf, 1, p->u.octet_aligned->len, ofi);
 280         fclose(ofi);
 281         printf("dumped record\n");
 282 #endif
 283     }
 284     else
 285     {
 286         printf("Unknown record representation.\n");
 287         if (!odr_external(print, &r, 0))
 288         {
 289             odr_perror(print, "Printing external");
 290             odr_reset(print);
 291         }
 292     }
 293 #endif
 294 }
 295
 296 static void display_diagrec(Z_DiagRec *p)
 297 {
 298     oident *ent;
 299
 300     printf("Diagnostic message from database.\n");
 301     if (!(ent = oid_getentbyoid(p->diagnosticSetId)) ||
 302         ent->class != CLASS_DIAGSET || ent->value != VAL_BIB1)
 303         printf("Missing or unknown diagset\n");
 304     printf("Error condition: %d", *p->condition);
 305     printf(" -- %s\n", p->addinfo ? p->addinfo : "");
 306 }
 307
 308 static void display_nameplusrecord(Z_NamePlusRecord *p)
 309 {
 310     if (p->databaseName)
 311         printf("[%s]", p->databaseName);
 312     if (p->which == Z_NamePlusRecord_surrogateDiagnostic)
 313         display_diagrec(p->u.surrogateDiagnostic);
 314     else
 315         display_record(p->u.databaseRecord);
 316 }
 317
 318 static void display_records(Z_Records *p)
 319 {
 320     int i;
 321
 322     if (p->which == Z_Records_NSD)
 323         display_diagrec(p->u.nonSurrogateDiagnostic);
 324     else
 325     {
 326         printf("Records: %d\n", p->u.databaseOrSurDiagnostics->num_records);
 327         for (i = 0; i < p->u.databaseOrSurDiagnostics->num_records; i++)
 328             display_nameplusrecord(p->u.databaseOrSurDiagnostics->records[i]);
 329     }
 330 }
 331
 332 static int send_searchRequest(char *arg)
 333 {
 334     Z_APDU *apdu = zget_APDU(out, Z_APDU_searchRequest);
 335     Z_SearchRequest *req = apdu->u.searchRequest;
 336     char *databaseNames = database;
 337     Z_Query query;
 338 #ifdef RPN_QUERY
 339 #ifndef PREFIX_QUERY
 340     struct ccl_rpn_node *rpn;
 341     int error, pos;
 342 #endif
 343 #endif
 344     char setstring[100];
 345 #ifdef RPN_QUERY
 346     Z_RPNQuery *RPNquery;
 347     oident bib1;
 348 #else
 349     Odr_oct ccl_query;
 350 #endif
 351
 352 #ifdef RPN_QUERY
 353 #ifndef PREFIX_QUERY
 354     rpn = ccl_find_str(bibset, arg, &error, &pos);
 355     if (error)
 356     {
 357         printf("CCL ERROR: %s\n", ccl_err_msg(error));
 358         return 0;
 359     }
 360 #endif
 361 #endif
 362
 363     if (!strcmp(arg, "@big")) /* strictly for troublemaking */
 364     {
 365         static unsigned char big[2100];
 366         static Odr_oct bigo;
 367
 368         /* send a very big referenceid to test transport stack etc. */
 369         memset(big, 'A', 2100);
 370         bigo.len = bigo.size = 2100;
 371         bigo.buf = big;
 372         req->referenceId = &bigo;
 373     }
 374
 375     if (setnumber >= 0)
 376     {
 377         sprintf(setstring, "%d", ++setnumber);
 378         req->resultSetName = setstring;
 379     }
 380     *req->smallSetUpperBound = smallSetUpperBound;
 381     *req->largeSetLowerBound = largeSetLowerBound;
 382     *req->mediumSetPresentNumber = mediumSetPresentNumber;
 383     req->num_databaseNames = 1;
 384     req->databaseNames = &databaseNames;
 385
 386     req->query = &query;
 387
 388 #ifdef RPN_QUERY
 389     query.which = Z_Query_type_1;
 390
 391 #ifndef PREFIX_QUERY
 392     assert((RPNquery = ccl_rpn_query(rpn)));
 393 #else
 394     RPNquery = p_query_rpn (out, arg);
 395     if (!RPNquery)
 396     {
 397         printf("Prefix query error\n");
 398         return 0;
 399     }
 400 #endif
 401     bib1.proto = protocol;
 402     bib1.class = CLASS_ATTSET;
 403     bib1.value = VAL_BIB1;
 404     RPNquery->attributeSetId = oid_getoidbyent(&bib1);
 405     query.u.type_1 = RPNquery;
 406 #else
 407     query.which = Z_Query_type_2;
 408     query.u.type_2 = &ccl_query;
 409     ccl_query.buf = (unsigned char*) arg;
 410     ccl_query.len = strlen(arg);
 411 #endif
 412
 413     send_apdu(apdu);
 414     setno = 1;
 415     printf("Sent searchRequest.\n");
 416     return 2;
 417 }
 418
 419 static int process_searchResponse(Z_SearchResponse *res)
 420 {
 421     if (*res->searchStatus)
 422         printf("Search was a success.\n");
 423     else
 424         printf("Search was a bloomin' failure.\n");
 425     printf("Number of hits: %d, setno %d\n",
 426         *res->resultCount, setnumber);
 427     printf("records returned: %d\n",
 428         *res->numberOfRecordsReturned);
 429     setno += *res->numberOfRecordsReturned;
 430     if (res->records)
 431         display_records(res->records);
 432     return 0;
 433 }
 434
 435 static int cmd_find(char *arg)
 436 {
 437     if (!*arg)
 438     {
 439         printf("Find what?\n");
 440         return 0;
 441     }
 442     if (!conn)
 443     {
 444         printf("Not connected yet\n");
 445         return 0;
 446     }
 447     if (!send_searchRequest(arg))
 448         return 0;
 449     return 2;
 450 }
 451
 452 static int cmd_ssub(char *arg)
 453 {
 454     if (!(smallSetUpperBound = atoi(arg)))
 455         return 0;
 456     return 1;
 457 }
 458
 459 static int cmd_lslb(char *arg)
 460 {
 461     if (!(largeSetLowerBound = atoi(arg)))
 462         return 0;
 463     return 1;
 464 }
 465
 466 static int cmd_mspn(char *arg)
 467 {
 468     if (!(mediumSetPresentNumber = atoi(arg)))
 469         return 0;
 470     return 1;
 471 }
 472
 473 static int cmd_status(char *arg)
 474 {
 475     printf("smallSetUpperBound: %d\n", smallSetUpperBound);
 476     printf("largeSetLowerBound: %d\n", largeSetLowerBound);
 477     printf("mediumSetPresentNumber: %d\n", mediumSetPresentNumber);
 478     return 1;
 479 }
 480
 481 static int cmd_base(char *arg)
 482 {
 483     if (!*arg)
 484     {
 485         printf("Usage: base <database>\n");
 486         return 0;
 487     }
 488     strcpy(database, arg);
 489     return 1;
 490 }
 491
 492 static int cmd_setnames(char *arg)
 493 {
 494     if (setnumber < 0)
 495     {
 496         printf("Set numbering enabled.\n");
 497         setnumber = 0;
 498     }
 499     else
 500     {
 501         printf("Set numbering disabled.\n");
 502         setnumber = -1;
 503     }
 504     return 1;
 505 }
 506
 507 /* PRESENT SERVICE ----------------------------- */
 508
 509 static int send_presentRequest(char *arg)
 510 {
 511     Z_APDU *apdu = zget_APDU(out, Z_APDU_presentRequest);
 512     Z_PresentRequest *req = apdu->u.presentRequest;
 513     int nos = 1;
 514     char *p;
 515     char setstring[100];
 516
 517     if ((p = strchr(arg, '+')))
 518     {
 519         nos = atoi(p + 1);
 520         *p = 0;
 521     }
 522     if (*arg)
 523         setno = atoi(arg);
 524
 525     if (setnumber >= 0)
 526     {
 527         sprintf(setstring, "%d", setnumber);
 528         req->resultSetId = setstring;
 529     }
 530     req->resultSetStartPoint = &setno;
 531     req->numberOfRecordsRequested = &nos;
 532     send_apdu(apdu);
 533     printf("Sent presentRequest (%d+%d).\n", setno, nos);
 534     return 2;
 535 }
 536
 537 static int cmd_show(char *arg)
 538 {
 539     if (!send_presentRequest(arg))
 540         return 0;
 541     return 2;
 542 }
 543
 544 int cmd_quit(char *arg)
 545 {
 546     printf("See you later, alligator.\n");
 547     exit(0);
 548 }
 549
 550 int cmd_cancel(char *arg)
 551 {
 552     Z_APDU *apdu = zget_APDU(out, Z_APDU_triggerResourceControlRequest);
 553     Z_TriggerResourceControlRequest *req =
 554         apdu->u.triggerResourceControlRequest;
 555     bool_t false = 0;
 556
 557     if (!session)
 558     {
 559         printf("Session not initialized yet\n");
 560         return 0;
 561     }
 562     if (!ODR_MASK_GET(session->options, Z_Options_triggerResourceCtrl))
 563     {
 564         printf("Target doesn't support cancel (trigger resource ctrl)\n");
 565         return 0;
 566     }
 567     *req->requestedAction = Z_TriggerResourceCtrl_cancel;
 568     req->resultSetWanted = &false;
 569
 570     send_apdu(apdu);
 571     printf("Sent cancel request\n");
 572     return 2;
 573 }
 574
 575 int send_scanrequest(char *string, int pp, int num)
 576 {
 577     Z_APDU *apdu = zget_APDU(out, Z_APDU_scanRequest);
 578     Z_ScanRequest *req = apdu->u.scanRequest;
 579     char *db = database;
 580     oident attset;
 581
 582     req->num_databaseNames = 1;
 583     req->databaseNames = &db;
 584     attset.proto = protocol;
 585     attset.class = CLASS_ATTSET;
 586     attset.value = VAL_BIB1;
 587     req->attributeSet = oid_getoidbyent(&attset);
 588     req->termListAndStartPoint = p_query_scan(out, string);
 589     req->numberOfTermsRequested = &num;
 590     req->preferredPositionInResponse = &pp;
 591     send_apdu(apdu);
 592     return 2;
 593 }
 594
 595 void display_term(Z_TermInfo *t)
 596 {
 597     if (t->term->which == Z_Term_general)
 598     {
 599         printf("%.*s (%d)\n", t->term->u.general->len, t->term->u.general->buf,
 600             t->globalOccurrences ? *t->globalOccurrences : -1);
 601         sprintf(last_scan, "%.*s", t->term->u.general->len,
 602             t->term->u.general->buf);
 603     }
 604     else
 605         printf("Term type not general.\n");
 606 }
 607
 608 void process_scanResponse(Z_ScanResponse *res)
 609 {
 610     int i;
 611
 612     printf("SCAN: %d entries, position=%d\n", *res->numberOfEntriesReturned,
 613         *res->positionOfTerm);
 614     if (*res->scanStatus != Z_Scan_success)
 615         printf("Scan returned code %d\n", *res->scanStatus);
 616     if (!res->entries)
 617         return;
 618     if (res->entries->which == Z_ListEntries_entries)
 619     {
 620         Z_Entries *ent = res->entries->u.entries;
 621
 622         for (i = 0; i < ent->num_entries; i++)
 623             if (ent->entries[i]->which == Z_Entry_termInfo)
 624             {
 625                 printf("%c ", i + 1 == *res->positionOfTerm ? '*' : ' ');
 626                 display_term(ent->entries[i]->u.termInfo);
 627             }
 628             else
 629                 display_diagrec(ent->entries[i]->u.surrogateDiagnostic);
 630     }
 631     else
 632         display_diagrec(res->entries->u.nonSurrogateDiagnostics->diagRecs[0]);
 633 }
 634
 635 int cmd_scan(char *arg)
 636 {
 637     if (!session)
 638     {
 639         printf("Session not initialized yet\n");
 640         return 0;
 641     }
 642     if (!ODR_MASK_GET(session->options, Z_Options_scan))
 643     {
 644         printf("Target doesn't support scan\n");
 645         return 0;
 646     }
 647     if (*arg)
 648     {
 649         if (send_scanrequest(arg, 5, 19) < 0)
 650             return 0;
 651     }
 652     else
 653         if (send_scanrequest(last_scan, 1, 19) < 0)
 654             return 0;
 655     return 2;
 656 }
 657
 658 static void initialize(void)
 659 {
 660 #ifdef RPN_QUERY
 661 #ifndef PREFIX_QUERY
 662     FILE *inf;
 663 #endif
 664 #endif
 665
 666     if (!(out = odr_createmem(ODR_ENCODE)) ||
 667         !(in = odr_createmem(ODR_DECODE)) ||
 668         !(print = odr_createmem(ODR_PRINT)))
 669     {
 670         fprintf(stderr, "failed to allocate ODR streams\n");
 671         exit(1);
 672     }
 673     setvbuf(stdout, 0, _IONBF, 0);
 674
 675 #ifdef RPN_QUERY
 676 #ifndef PREFIX_QUERY
 677     bibset = ccl_qual_mk ();
 678     inf = fopen ("default.bib", "r");
 679     if (inf)
 680     {
 681         ccl_qual_file (bibset, inf);
 682         fclose (inf);
 683     }
 684 #endif
 685 #endif
 686 }
 687
 688 static int client(void)
 689 {
 690     static struct {
 691         char *cmd;
 692         int (*fun)(char *arg);
 693         char *ad;
 694     } cmd[] = {
 695         {"open", cmd_open, "('tcp'|'osi')':'[<TSEL>'/']<HOST>[':'<PORT>]"},
 696         {"quit", cmd_quit, ""},
 697         {"find", cmd_find, "<CCL-QUERY>"},
 698         {"base", cmd_base, "<BASE-NAME>"},
 699         {"show", cmd_show, "<REC#>['+'<#RECS>]"},
 700         {"scan", cmd_scan, "<TERM>"},
 701         {"authentication", cmd_authentication, "<ACCTSTRING>"},
 702         {"lslb", cmd_lslb, "<largeSetLowerBound>"},
 703         {"ssub", cmd_ssub, "<smallSetUpperBound>"},
 704         {"mspn", cmd_mspn, "<mediumSetPresentNumber>"},
 705         {"status", cmd_status, ""},
 706         {"setnames", cmd_setnames, ""},
 707         {"cancel", cmd_cancel, ""},
 708         {0,0}
 709     };
 710     char *netbuffer= 0;
 711     int netbufferlen = 0;
 712     int i;
 713     Z_APDU *apdu;
 714
 715     while (1)
 716     {
 717         int res;
 718         fd_set input;
 719         char line[1024], word[1024], arg[1024];
 720
 721         FD_ZERO(&input);
 722         FD_SET(0, &input);
 723         if (conn)
 724             FD_SET(cs_fileno(conn), &input);
 725         if ((res = select(20, &input, 0, 0, 0)) < 0)
 726         {
 727             perror("select");
 728             exit(1);
 729         }
 730         if (!res)
 731             continue;
 732         if (FD_ISSET(0, &input))
 733         {
 734             /* quick & dirty way to get a command line. */
 735             if (!gets(line))
 736                 break;
 737             if ((res = sscanf(line, "%s %[^;]", word, arg)) <= 0)
 738             {
 739                 strcpy(word, last_cmd);
 740                 *arg = '\0';
 741             }
 742             else if (res == 1)
 743                 *arg = 0;
 744             strcpy(last_cmd, word);
 745             for (i = 0; cmd[i].cmd; i++)
 746                 if (!strncmp(cmd[i].cmd, word, strlen(word)))
 747                 {
 748                     res = (*cmd[i].fun)(arg);
 749                     break;
 750                 }
 751             if (!cmd[i].cmd) /* dump our help-screen */
 752             {
 753                 printf("Unknown command: %s.\n", word);
 754                 printf("Currently recognized commands:\n");
 755                 for (i = 0; cmd[i].cmd; i++)
 756                     printf("   %s %s\n", cmd[i].cmd, cmd[i].ad);
 757                 res = 1;
 758             }
 759             if (res < 2)
 760                 printf(C_PROMPT);
 761         }
 762         if (conn && FD_ISSET(cs_fileno(conn), &input))
 763         {
 764             do
 765             {
 766                 if ((res = cs_get(conn, &netbuffer, &netbufferlen)) < 0)
 767                 {
 768                     perror("cs_get");
 769                     exit(1);
 770                 }
 771                 if (!res)
 772                 {
 773                     printf("Target closed connection.\n");
 774                     exit(1);
 775                 }
 776                 odr_reset(in); /* release APDU from last round */
 777                 odr_setbuf(in, netbuffer, res, 0);
 778                 if (!z_APDU(in, &apdu, 0))
 779                 {
 780                     odr_perror(in, "Decoding incoming APDU");
 781                     exit(1);
 782                 }
 783 #if 0
 784                 if (!z_APDU(print, &apdu, 0))
 785                 {
 786                     odr_perror(print, "Failed to print incoming APDU");
 787                     odr_reset(print);
 788                     continue;
 789                 }
 790 #endif
 791                 switch(apdu->which)
 792                 {
 793                     case Z_APDU_initResponse:
 794                         process_initResponse(apdu->u.initResponse);
 795                         break;
 796                     case Z_APDU_searchResponse:
 797                         process_searchResponse(apdu->u.searchResponse);
 798                         break;
 799                     case Z_APDU_scanResponse:
 800                         process_scanResponse(apdu->u.scanResponse);
 801                         break;
 802                     case Z_APDU_presentResponse:
 803                         printf("Received presentResponse.\n");
 804                         setno +=
 805                             *apdu->u.presentResponse->numberOfRecordsReturned;
 806                         if (apdu->u.presentResponse->records)
 807                             display_records(apdu->u.presentResponse->records);
 808                         else
 809                             printf("No records.\n");
 810                         break;
 811                     default:
 812                         printf("Received unknown APDU type (%d).\n",
 813                             apdu->which);
 814                         exit(1);
 815                 }
 816                 printf("Z> ");
 817                 fflush(stdout);
 818             }
 819             while (cs_more(conn));
 820         }
 821     }
 822     return 0;
 823 }
 824
 825 int main(int argc, char **argv)
 826 {
 827     initialize();
 828     if (argc > 1)
 829         cmd_open(argv[1]);
 830     else
 831         printf(C_PROMPT);
 832     return client();
 833 }