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