Annotation of Amaya/amaya/AHTBridge.c, revision 1.40

1.9       cvs         1: /*
                      2:  *
                      3:  *  (c) COPYRIGHT MIT and INRIA, 1996.
                      4:  *  Please first read the full copyright statement in file COPYRIGHT.
                      5:  *
                      6:  */
                      7:  
1.14      cvs         8: /*
                      9:  * AHTBridge.c : This module implements the callback setup and
                     10:  * handlers between the Xt, libwww, and Amaya procedures. It's responsible
                     11:  * for assigning, modifying, and supressing Xt events to the active
                     12:  * requests.
                     13:  *
                     14:  * Author: J Kahan
1.28      cvs        15:  *         R. Guetari/J. Kahan Windows NT/95 routines
1.14      cvs        16:  *
                     17:  */
1.23      cvs        18: #ifndef AMAYA_JAVA
                     19: 
1.16      cvs        20: #define THOT_EXPORT extern
1.4       cvs        21: #include "amaya.h"
1.10      cvs        22: #include "AHTBridge_f.h"
                     23: #include "AHTFWrite_f.h"
                     24: #include "query_f.h"
                     25: #include "answer_f.h"
1.4       cvs        26: 
1.22      cvs        27: #ifndef _WINDOWS
1.4       cvs        28: /* Amaya's X appcontext */
1.38      cvs        29: 
1.16      cvs        30: extern ThotAppContext app_cont;
1.4       cvs        31: 
1.32      cvs        32: /* Private functions */
1.4       cvs        33: #ifdef __STDC__
1.18      cvs        34: static void         RequestRegisterReadXtevent (AHTReqContext *, SOCKET);
1.7       cvs        35: static void         RequestKillReadXtevent (AHTReqContext *);
1.18      cvs        36: static void         RequestRegisterWriteXtevent (AHTReqContext *, SOCKET);
1.7       cvs        37: static void         RequestKillWriteXtevent (AHTReqContext *);
1.18      cvs        38: static void         RequestRegisterExceptXtevent (AHTReqContext *, SOCKET);
1.7       cvs        39: static void         RequestKillExceptXtevent (AHTReqContext *);
1.27      cvs        40: #else /* __STDC__ */
1.18      cvs        41: static void         RequesAddReadXtevent ();
1.7       cvs        42: static void         RequestKillReadXtevent ();
1.18      cvs        43: static void         RequesAddWriteXtevent ();
1.7       cvs        44: static void         RequestKillWriteXtevent ();
1.18      cvs        45: static void         RequestRegisterExceptXtevent ();
1.7       cvs        46: static void         RequestKillExceptXtevent ();
1.27      cvs        47: #endif /* __STDC__ */
1.24      cvs        48: #endif /* _WINDOWS */
                     49: 
1.32      cvs        50: /* Private variables */
1.4       cvs        51: 
                     52: /*
                     53:  * this set of SockOps map our WinSock "socket event SockOps" into 
                     54:  * our read and write sets. Note that under the canonical Unix model,
                     55:  * a non-blocking socket passed to an accept() call will appear as readable, 
                     56:  * whilst a non-blocking call to connect() will appear as writeable. In add.
                     57:  * if the connection has been closed, the socket will appear readable under
                     58:  * BSD Unix semantics 
                     59:  */
1.32      cvs        60: 
1.10      cvs        61: static const SockOps ReadBits = FD_READ | FD_ACCEPT | FD_CLOSE;
                     62: static const SockOps WriteBits = FD_WRITE | FD_CONNECT;
                     63: static const SockOps ExceptBits = FD_OOB;
1.4       cvs        64: 
1.38      cvs        65: #define SOCK_TABLE_SIZE 67
                     66: #define HASH(s) ((s) % SOCK_TABLE_SIZE)
                     67: static XtInputId persSockets[SOCK_TABLE_SIZE];
1.35      cvs        68: 
1.32      cvs        69: /* Private functions */
1.4       cvs        70: 
1.10      cvs        71: /*--------------------------------------------------------------------
                     72:   AHTCallback_bridge
1.11      cvs        73:   this function acts as a bridge between Xt and libwww. From the Xt
                     74:   point of view, this function is the callback handler whenever there's
                     75:   any activity on the sockets associated with the active requests. From
                     76:   the libwww point of view, this is the function that takes the initiative
                     77:   to invoke the callback function associated with an active request,
                     78:   whenever there's an activity in the socket associated to it.
                     79:   In this latter  aspect, this function is similar to the library's
                     80:   own __DoCallback()  function.
                     81:   Upon activation, the function looks up the request associated with the
                     82:   active socket and then looks up the cbf associated with that request.
                     83:   Upon completion of the execution of the request's cbf, it verifies
                     84:   the state of the request and, if it's an asynchronous request, deletes
                     85:   the memory allocated to it.
1.10      cvs        86:   -------------------------------------------------------------------*/
1.37      cvs        87: #ifndef _WINDOWS
1.4       cvs        88: #ifdef __STDC__
1.12      cvs        89: void *AHTCallback_bridge (caddr_t cd, int *s, XtInputId * id)
1.26      cvs        90: #else  /* __STDC__ */
1.12      cvs        91: void *AHTCallback_bridge (cd, s, id)
1.7       cvs        92: caddr_t             cd;
                     93: int                *s;
                     94: XtInputId          *id;
1.4       cvs        95: #endif /* __STDC__ */
                     96: {
1.11      cvs        97:    int                 status;  /* the status result of the libwwww call */
1.7       cvs        98:    HTRequest          *rqp = NULL;
                     99:    AHTReqContext      *me;
1.11      cvs       100:    SockOps             ops;    
1.38      cvs       101:    int                 v;
1.40    ! cvs       102:    int                        socket = *s;
        !           103:    HTEventCallback    *cbf;
1.4       cvs       104: 
1.10      cvs       105:    /* Libwww 5.0a does not take into account the ops parameter
1.11      cvs       106:       in the invocation of for this function call */
1.38      cvs       107:    
1.13      cvs       108:    ops = FD_WRITE;
1.40    ! cvs       109:    cbf = (HTEventCallback *) __RetrieveCBF (socket, ops, &rqp);
1.36      cvs       110: 
1.38      cvs       111:    /* if rqp is NULL, we are dealing with a persistent socket shutdown */
                    112:    if (!(cbf) || !(rqp) || rqp->priority == HT_PRIORITY_OFF) 
                    113:      {
1.36      cvs       114: #ifdef DEBUG_LIBWWW
1.38      cvs       115:        HTTrace ("Callback.... No callback found\n");
1.36      cvs       116: #endif
1.38      cvs       117:        /* remove the Xt input which caused this callback */
                    118: #     ifdef WWW_XWINDOWS
                    119:        XtRemoveInput (*id);
                    120: #     endif
                    121:        
                    122:        /* if it's a persistent socket, remove it from the table */
1.40    ! cvs       123:        v = HASH (socket);
1.38      cvs       124:        if (persSockets[v]) 
                    125:         {
                    126:           persSockets[v] = 0;
                    127:           if (cbf)
1.40    ! cvs       128:             (*cbf) (socket, 0, FD_CLOSE);
1.38      cvs       129:         }
                    130:        return (0);
                    131:      }
                    132:    
1.7       cvs       133:    me = HTRequest_context (rqp);
1.38      cvs       134:    
1.36      cvs       135: #ifdef DEBUG_LIBWWW
1.38      cvs       136:    fprintf (stderr, "AHTBridge: Processing url %s \n", me->urlName);
1.36      cvs       137: #endif
1.38      cvs       138:    
1.32      cvs       139:    switch ((XtInputId) cd) {
1.38      cvs       140:    case XtInputReadMask:
1.19      cvs       141:               ops = me->read_ops;
                    142:               ops = FD_READ;
                    143:               break;
1.32      cvs       144:          case XtInputWriteMask:
1.7       cvs       145:               ops = me->write_ops;
                    146:               ops = FD_WRITE;
                    147:               break;
1.32      cvs       148:          case XtInputExceptMask:
1.7       cvs       149:               ops = me->except_ops;
                    150:               ops = FD_OOB;
                    151:               break;
1.32      cvs       152:          default:
                    153:               break;
                    154:    } /* switch */
1.17      cvs       155: 
1.32      cvs       156:    /* Invokes the callback associated to the requests */
                    157:    
                    158:    /* first we change the status of the request, to say it
                    159:       has entered a critical section */
1.38      cvs       160:    
1.35      cvs       161:    /* JK: Clean this up */
1.32      cvs       162:    if ((HTRequest_outputStream(me->request) == (HTStream *) NULL))
1.38      cvs       163:       fprintf(stderr,"\n **ERROR** opening %s\n\n", me->urlName);
1.32      cvs       164: 
                    165:    me->reqStatus = HT_BUSY;
1.38      cvs       166: 
1.40    ! cvs       167:    if ((status = (*cbf) (socket, rqp, ops)) != HT_OK)
1.36      cvs       168: #ifdef DEBUG_LIBWWW
                    169:       HTTrace ("Callback.... returned a value != HT_OK");
                    170: #endif
1.7       cvs       171:    /* Several states can happen after this callback. They
                    172:     * are indicated by the me->reqStatus structure member and
                    173:     * the fds external variables. The following lines examine
                    174:     * the states and correspondly update the Xt event register
                    175:     *
                    176:     * Regarding the me->reqStatus member, we have the following
                    177:     * possible states:
                    178:     *   
                    179:     * HT_BUSY:    Request has blocked
                    180:     * HT_WAITING: Request has been reissued
                    181:     * HT_ABORT:   Request has been stopped
                    182:     * HT_END:     Request has ended
                    183:     */
                    184: 
1.32      cvs       185:    if (me->reqStatus == HT_ABORT) {
1.11      cvs       186:    /* Has the user stopped the request? */
1.38      cvs       187:      me->reqStatus = HT_WAITING;
                    188:      StopRequest (me->docid);
                    189:      return (0);
1.32      cvs       190:    }
1.7       cvs       191: 
1.32      cvs       192:    if (me->reqStatus == HT_WAITING) {
1.38      cvs       193:      /* the request is being reissued */
                    194:      /*
                    195:       * (1) The old request has ended and the library
                    196:       * assigned the old socket number to a pending
                    197:       * request.
                    198:       *
                    199:       * (2) The request has been reissued after an 
                    200:       * authentication or redirection directive and
                    201:       * we are using the same old socket number.
                    202:       */
                    203:      
1.36      cvs       204: #ifdef DEBUG_LIBWWW
1.38      cvs       205:      fprintf (stderr, "*** detected a reissue of request \n");
1.36      cvs       206: #endif
1.38      cvs       207:      return (0);
1.32      cvs       208:    }
1.4       cvs       209: 
1.32      cvs       210:    /* we verify if the request exists. If it has ended, we will have
                    211:       a reqStatus with an HT_END value */
1.7       cvs       212: 
1.36      cvs       213:    if ((me->reqStatus == HT_END) ||
                    214:        (me->reqStatus == HT_ERR)) {
                    215:         /* request has ended */
                    216: #ifdef DEBUG_LIBWWW
1.40    ! cvs       217:        fprintf (stderr, "(BF) removing Xtinput %lu !RWE, sock %d (Request has ended)\n", *id, socket);
1.36      cvs       218: #endif
1.38      cvs       219:        if ((me->mode & AMAYA_ASYNC) || (me->mode & AMAYA_IASYNC)) {
1.36      cvs       220:         AHTPrintPendingRequestStatus (me->docid, YES);
1.32      cvs       221:         /* free the memory allocated for async requests */
                    222:         AHTReqContext_delete (me);
1.38      cvs       223:        } else if (me->reqStatus != HT_END && HTError_hasSeverity (HTRequest_error (me->request), ERR_NON_FATAL))
                    224:         /* did the SYNC request end because of an error? If yes, report it back to the caller */
                    225:         me->reqStatus = HT_ERR;
                    226:        return (0);
1.32      cvs       227:    }
1.38      cvs       228: 
1.36      cvs       229:    /* The request is still alive, so change it's status to indicate 
                    230:       it's out of the critical section */
1.7       cvs       231:    me->reqStatus = HT_WAITING;
                    232:    return (0);
1.4       cvs       233: }
1.37      cvs       234: #endif /* !_WINDOWS */
1.4       cvs       235: 
1.32      cvs       236: #ifdef _WINDOWS
1.29      cvs       237: /*----------------------------------------------------------------
1.32      cvs       238:   WIN_Activate_Request
1.29      cvs       239:   when there are more open requests than available sockets, the 
                    240:   requests are put in a "pending state." When a socket becomes
                    241:   available, libwww associates it with a pending request and then
                    242:   calls this callback function. This function is responsible for
                    243:   opening the temporary file where the GET and POST  results
                    244:   will be stored. The function is also responsible for 
                    245:   registering the socket with the Xt event loop.
                    246:   Consult the libwww manual for more details on the signature
                    247:   of this function.
                    248:   ----------------------------------------------------------------*/
                    249: #ifdef __STDC__
1.32      cvs       250: int                 WIN_Activate_Request (HTRequest * request, HTAlertOpcode op, int msgnum, const char *dfault, void *input, HTAlertPar * reply)
1.29      cvs       251: #else
1.32      cvs       252: int                 WIN_Activate_Request (request, op, msgnum, dfault, input, reply)
1.29      cvs       253: HTRequest          *request;
                    254: HTAlertOpcode       op;
                    255: int                 msgnum;
                    256: const char         *dfault;
                    257: void               *input;
                    258: HTAlertPar         *reply;
                    259: 
                    260: #endif /* __STDC__ */
                    261: {
                    262:    AHTReqContext      *me = HTRequest_context (request);
                    263: 
1.32      cvs       264:    if (me->reqStatus == HT_NEW) {
1.40    ! cvs       265:      if (!(me->output) &&
        !           266:          (me->output != stdout) && 
1.38      cvs       267:         me->outputfile && 
                    268:         (me->output = fopen (me->outputfile, "wb")) == NULL) {
                    269:        /* the request is associated with a file */
                    270:        me->outputfile[0] = EOS;        /* file could not be opened */
                    271:        TtaSetStatus (me->docid, 1, 
                    272:                     TtaGetMessage (AMAYA, AM_CANNOT_CREATE_FILE),
                    273:                     me->outputfile);
                    274:        me->reqStatus = HT_ERR;
                    275:        if (me->error_html)
                    276:         DocNetworkStatus[me->docid] |= AMAYA_NET_ERROR; /* so we can show the error message */
1.32      cvs       277:       } else {
1.36      cvs       278:        if (THD_TRACE)
                    279:          fprintf (stderr, "WIN_Activate_Request: Activating pending %s . Open fd %d\n", me->urlName, (int) me->output);
                    280:        HTRequest_setOutputStream (me->request, AHTFWriter_new (me->request, me->output, YES));    
1.32      cvs       281:         /*change the status of the request */
                    282:         me->reqStatus = HT_WAITING;
                    283:       }
                    284:    } 
                    285:    else if (me->reqStatus == HT_WAITING) {
1.36      cvs       286:      
                    287:      /*change the status of the request */
                    288:      rewind (me->output);
                    289:      if (HTRequest_outputStream (me->request) == NULL)
                    290:        HTRequest_setOutputStream (me->request, AHTFWriter_new (me->request, me->output, YES));
1.32      cvs       291:    } 
                    292:    else {
1.36      cvs       293:      me->reqStatus = HT_ERR;
1.32      cvs       294:    }
                    295:    
1.36      cvs       296:    return ((me->reqStatus != HT_ERR) ? HT_OK : HT_ERROR);
1.32      cvs       297: }
                    298: 
1.38      cvs       299: #else /* _WINDOWS */
1.32      cvs       300: 
                    301: /*----------------------------------------------------------------
                    302:   Add_NewSocket_to_Loop
                    303:   when there are more open requests than available sockets, the 
                    304:   requests are put in a "pending state." When a socket becomes
                    305:   available, libwww associates it with a pending request and then
                    306:   calls this callback function. This function is responsible for
                    307:   opening the temporary file where the GET and POST  results
                    308:   will be stored. The function is also responsible for 
                    309:   registering the socket with the Xt event loop.
                    310:   Consult the libwww manual for more details on the signature
                    311:   of this function.
                    312:   ----------------------------------------------------------------*/
                    313: #ifdef __STDC__
                    314: int                 Add_NewSocket_to_Loop (HTRequest * request, HTAlertOpcode op, int msgnum, const char *dfault, void *input, HTAlertPar * reply)
                    315: #else
                    316: int                 Add_NewSocket_to_Loop (request, op, msgnum, dfault, input, reply)
                    317: HTRequest          *request;
                    318: HTAlertOpcode       op;
                    319: int                 msgnum;
                    320: const char         *dfault;
                    321: void               *input;
                    322: HTAlertPar         *reply;
1.29      cvs       323: 
1.32      cvs       324: #endif /* __STDC__ */
                    325: {
                    326:    AHTReqContext      *me = HTRequest_context (request);
1.38      cvs       327:    int status = HT_OK;
1.4       cvs       328: 
1.36      cvs       329: #ifdef DEBUG_LIBWWW
1.32      cvs       330:      fprintf (stderr, "(Activating a request\n");
1.36      cvs       331: #endif
1.30      cvs       332: 
1.40    ! cvs       333:      /* request was aborted (redirection, authentication) and now is is
        !           334:        being automatically reissued */
        !           335: 
        !           336:      if (me->reqStatus == HT_BUSY && me->output) {
        !           337:        fclose (me->output);
        !           338:        me->output = NULL;
        !           339:      }
        !           340: 
        !           341:      /* the request is active, open the output file */
        !           342:      if (!(me->output) &&
        !           343:         (me->output != stdout) && 
        !           344:         me->outputfile &&
        !           345:         !(me->output = fopen (me->outputfile, "w"))) {
        !           346:        me->outputfile[0] = EOS;        
        !           347:        /* file could not be opened */
        !           348:        TtaSetStatus (me->docid, 1, 
        !           349:                     TtaGetMessage (AMAYA, AM_CANNOT_CREATE_FILE),
        !           350:                     me->outputfile);
        !           351:        me->reqStatus = HT_ERR;
        !           352:        status = HT_ERROR;
        !           353:        /* should the error be shown on the Amaya doc window? */
        !           354:        if (me->error_html)
        !           355:         DocNetworkStatus[me->docid] |= AMAYA_NET_ERROR; 
        !           356:      }
1.38      cvs       357: 
1.36      cvs       358: #ifdef DEBUG_LIBWWW
1.40    ! cvs       359:      fprintf (stderr, "ADDNEWSOCK: associated %s to FD %p\n", 
        !           360:              me->urlName, me->output); 
1.32      cvs       361: #endif
1.40    ! cvs       362:      if (me->output) {
        !           363:        if (THD_TRACE)
        !           364:         fprintf (stderr, "Add_NewSocket_to_Loop: Activating "
        !           365:                  "pending %s . Open fd %d\n", 
        !           366:                  me->urlName, (int) me->output);
        !           367:        
        !           368:        HTRequest_setOutputStream (me->request,
        !           369:                                  AHTFWriter_new (me->request, 
        !           370:                                                  me->output, 
        !           371:                                                  YES));
        !           372:        me->reqStatus = HT_WAITING;
        !           373:      }
        !           374: 
1.32      cvs       375:    
1.40    ! cvs       376:      return (status);
1.4       cvs       377: }
1.32      cvs       378: #endif /* _WINDOWS */
1.4       cvs       379: 
1.11      cvs       380: /*----------------------------------------------------------------------
                    381:   AHTEvent_register
                    382:   callback called by libwww whenever a socket is open and associated
                    383:   to a request. It sets the pertinent Xt events so that the Xt Event
                    384:   loops gets an interruption whenever there's action of the socket. 
                    385:   In addition, it registers the request with libwww.
                    386:   ----------------------------------------------------------------------*/
1.4       cvs       387: #ifdef __STDC__
1.7       cvs       388: int                 AHTEvent_register (SOCKET sock, HTRequest * rqp, SockOps ops, HTEventCallback * cbf, HTPriority p)
1.4       cvs       389: #else
1.7       cvs       390: int                 AHTEvent_register (sock, rqp, ops, cbf, p)
                    391: SOCKET              sock;
                    392: HTRequest          *rqp;
                    393: SockOps             ops;
                    394: HTEventCallback    *cbf;
                    395: HTPriority          p;
                    396: 
                    397: #endif /* __STDC__ */
1.4       cvs       398: {
1.40    ! cvs       399:   AHTReqContext      *me;      /* current request */
        !           400:   int                 status;  /* libwww status associated with 
        !           401:                                  the socket number */
1.38      cvs       402: #ifndef _WINDOWS
1.40    ! cvs       403:   int                 v;
1.38      cvs       404: #endif /* _WINDOWS */
1.7       cvs       405: 
1.40    ! cvs       406:   if (sock == INVSOC)
        !           407:     return (0);
1.4       cvs       408: 
1.40    ! cvs       409:   /* get the request associated to the socket number */
1.7       cvs       410: 
1.40    ! cvs       411:   if (rqp == NULL) 
        !           412:     {
1.37      cvs       413: #ifndef _WINDOWS 
1.40    ! cvs       414:       if (ops == FD_CLOSE)
        !           415:        {
1.36      cvs       416: #ifdef DEBUG_LIBWWW
1.40    ! cvs       417:          fprintf(stderr, "HTEvent_register: ***** RQP is NULL @@@@@\n");
1.37      cvs       418: #endif /* DEBUG_LIBWWW */
1.40    ! cvs       419:          v = HASH (sock);
        !           420:          if (persSockets[v] != 0) 
        !           421:            {
        !           422:              XtRemoveInput (persSockets[v]);
        !           423:            }
1.38      cvs       424:         
1.40    ! cvs       425:          persSockets[v] = XtAppAddInput (app_cont, 
        !           426:                                          sock,
        !           427:                                          (XtPointer) XtInputReadMask,
        !           428:                                          (XtInputCallbackProc) AHTCallback_bridge,
        !           429:                                          (XtPointer) XtInputReadMask);
        !           430:        } /* *fd_close */
1.39      cvs       431: #endif /* !_WINDOWS */
1.40    ! cvs       432:     }
        !           433:   else /* rqp */
        !           434:     {
        !           435:       me = HTRequest_context (rqp);
1.38      cvs       436:        
1.36      cvs       437: #ifndef _WINDOWS
1.40    ! cvs       438:       v = HASH (sock);
        !           439:       if (persSockets[v] != 0) {
        !           440:        XtRemoveInput (persSockets[v]);
        !           441:        persSockets[v] = 0;
        !           442:       }          
1.36      cvs       443: #endif /* _WINDOWS */
1.40    ! cvs       444:       /* verify if we need to open the output file */ 
        !           445:       if (me->reqStatus == HT_NEW)
        !           446:        {
1.37      cvs       447: #ifdef _WINDOWS
1.40    ! cvs       448:          /* Erase any trailing events */
        !           449:          HTEventrg_unregister (sock, FD_ALL);
1.37      cvs       450: #endif
1.40    ! cvs       451:          /* we are opening a pending request */
1.38      cvs       452: #ifndef _WINDOWS
1.40    ! cvs       453:          if (!(me->output) && 
        !           454:              (me->output != stdout) && 
        !           455:              (me->output = fopen (me->outputfile, "w")) == NULL)
1.38      cvs       456: #else
1.40    ! cvs       457:            if (!(me->output) &&
        !           458:                (me->output != stdout) && 
        !           459:                (me->output = fopen (me->outputfile, "wb")) == NULL)
1.38      cvs       460: #endif /* !_WINDOWS */
1.40    ! cvs       461:              {
        !           462:                me->outputfile[0] = '\0';       /* file could not be opened */
        !           463:                TtaSetStatus (me->docid, 1, 
        !           464:                              TtaGetMessage (AMAYA, AM_CANNOT_CREATE_FILE),
        !           465:                              me->outputfile);
        !           466:                me->reqStatus = HT_ERR;
        !           467:                return (HT_ERROR);
        !           468:              }
1.36      cvs       469: #ifdef DEBUG_LIBWWW
1.40    ! cvs       470:          fprintf (stderr, "ADDNEWSOCK: associated %s to FILE %p\n",
        !           471:                   me->urlName, me->output); 
1.38      cvs       472: #endif /* DEBUG_LIBWWW */
1.40    ! cvs       473:          HTRequest_setOutputStream (me->request,
1.38      cvs       474:                                      AHTFWriter_new (me->request, me->output, YES));
                    475:           me->reqStatus = HT_WAITING;
1.40    ! cvs       476:        }
1.38      cvs       477:        
                    478:        if (THD_TRACE)
                    479:         fprintf (stderr, "AHTEvent_register: URL %s, SOCK %d, ops %lu \n",
                    480:                  me->urlName, sock, ops);
                    481:        
1.33      cvs       482: #ifndef _WINDOWS
1.38      cvs       483:        if (ops & ReadBits)
                    484:         {
                    485:           me->read_ops = ops;
                    486:           RequestRegisterReadXtevent (me, sock);
                    487:         }
                    488:        
                    489:        if (ops & WriteBits)
                    490:         {
                    491:           me->write_ops = ops;
                    492:           RequestRegisterWriteXtevent (me, sock);
                    493:         }
                    494:        
                    495:        if (ops & ExceptBits)
                    496:         {
                    497:           me->except_ops = ops;
                    498:           RequestRegisterExceptXtevent (me, sock);
                    499:         }
1.33      cvs       500: #endif  /* !_WINDOWS */
1.38      cvs       501:        
                    502:      } /* if *rqp */
                    503:    
1.37      cvs       504:    status = HTEventrg_register (sock, rqp, ops,
1.38      cvs       505:                                cbf, p);
1.7       cvs       506:    return (status);
1.4       cvs       507: }
1.34      cvs       508: 
                    509: /*----------------------------------------------------------------------
                    510:   AHTEvent_unregister
                    511:   callback called by libwww each time a request is unregistered. This
                    512:   function takes care of unregistering the pertinent Xt events
                    513:   associated with the request's socket. In addition, it unregisters
                    514:   the request from libwww.
                    515:   ----------------------------------------------------------------------*/
                    516: #ifdef __STDC__
                    517: int                 AHTEvent_unregister (SOCKET sock, SockOps ops)
                    518: #else
                    519: int                 AHTEvent_unregister (sock, ops)
                    520: SOCKET              sock;
                    521: SockOps             ops;
                    522: 
                    523: #endif /* __STDC__ */
                    524: {
                    525:    int                 status;
                    526:    HTRequest          *rqp = NULL;
1.39      cvs       527: #ifndef _WINDOWS
1.34      cvs       528:    AHTReqContext      *me;
1.38      cvs       529:    int                 v;
                    530: #endif /* _WINDOWS */
                    531: 
1.34      cvs       532: 
                    533:    /* Libwww 5.0a does not take into account the third parameter
                    534:       **  for this function call */
                    535: 
1.36      cvs       536: #ifndef _WINDOWS
                    537:    HTEventCallback     *cbf = (HTEventCallback *) __RetrieveCBF (sock, (SockOps) NULL, &rqp);
1.38      cvs       538: #endif /* _WINDOWS */
                    539: 
                    540:    if (sock == INVSOC)
                    541:      return HT_OK;
                    542: 
                    543: #ifndef _WINDOWS   
1.36      cvs       544: #ifdef DEBUG_LIBWWW
                    545:    fprintf (stderr, "AHTEventUnregister: cbf = %d, sock = %d, rqp = %d, ops= %x", cbf, sock, rqp, ops);
1.38      cvs       546: #endif /* DEBUG_LIBWWW */
                    547: 
                    548:    v = HASH (sock);
                    549:    if (persSockets[v] != 0) {
                    550:      XtRemoveInput (persSockets[v]);
                    551:      persSockets[v] = 0;
1.36      cvs       552:    }
1.34      cvs       553: 
1.7       cvs       554:    if (cbf)
                    555:      {
1.38      cvs       556:        if (rqp && (me = HTRequest_context (rqp)) )
1.36      cvs       557:         {
                    558:           if (ops & ReadBits) 
                    559:             RequestKillReadXtevent (me);
                    560:           
                    561:           if (ops & WriteBits)
                    562:             RequestKillWriteXtevent (me);
                    563:           
                    564:           if (ops & ExceptBits)
                    565:             RequestKillExceptXtevent (me);
                    566:         }
1.7       cvs       567:      }
1.36      cvs       568: #endif /* !_WINDOWS */
1.35      cvs       569: 
1.7       cvs       570:    status = HTEventrg_unregister (sock, ops);
1.35      cvs       571: 
1.7       cvs       572:    return (status);
1.4       cvs       573: }
1.35      cvs       574: 
                    575: #ifndef _WINDOWS
1.4       cvs       576: 
1.11      cvs       577: /*----------------------------------------------------------------------
                    578:   RequestKillAllXtevents
                    579:   front-end for kill all Xt events associated with the request pointed
                    580:   to by "me".
                    581:   ----------------------------------------------------------------------*/
1.4       cvs       582: #ifdef __STDC__
1.7       cvs       583: void                RequestKillAllXtevents (AHTReqContext * me)
1.4       cvs       584: #else
1.7       cvs       585: void                RequestKillAllXtevents (me)
                    586: AHTReqContext      *me;
                    587: #endif /* __STDC__ */
1.4       cvs       588: {
1.7       cvs       589:    if (THD_TRACE)
                    590:       fprintf (stderr, "Request_kill: Clearing Xtinputs\n");
1.4       cvs       591: 
1.7       cvs       592:    RequestKillReadXtevent (me);
                    593:    RequestKillWriteXtevent (me);
                    594:    RequestKillExceptXtevent (me);
1.4       cvs       595: }
                    596: 
1.11      cvs       597: /*----------------------------------------------------------------------
1.18      cvs       598:   RequestRegisterReadXtevent
                    599:   Registers with Xt the read events associated with socket sock
                    600:   ----------------------------------------------------------------------*/
                    601: #ifdef __STDC__
                    602: static void         RequestRegisterReadXtevent (AHTReqContext * me, SOCKET sock)
                    603: #else
                    604: static void         RequestRegisterReadXtevent (me, sock)
                    605: AHTReqContext      *me;
                    606: SOCKET sock;
                    607: #endif /* __STDC__ */
                    608: {
                    609:   if (me->read_xtinput_id)
                    610:     {
                    611:       if (THD_TRACE)
                    612:        fprintf (stderr, "Request_kill: Clearing Xtinput %lu Socket %d R\n", me->read_xtinput_id, sock);
                    613:       XtRemoveInput (me->read_xtinput_id);
                    614:     }
                    615: 
                    616:   me->read_xtinput_id =
                    617:     XtAppAddInput (app_cont,
                    618:                   sock,
                    619:                   (XtPointer) XtInputReadMask,
                    620:                   (XtInputCallbackProc) AHTCallback_bridge,
                    621:                   (XtPointer) XtInputReadMask);
                    622: 
1.26      cvs       623:    if (THD_TRACE)
1.18      cvs       624:     fprintf (stderr, "(BT) adding Xtinput %lu Socket %d R\n",
                    625:             me->read_xtinput_id, sock);
                    626: 
                    627: }
                    628: 
                    629: /*----------------------------------------------------------------------
1.11      cvs       630:   RequestKillReadXtevent
                    631:   kills any read Xt event associated with the request pointed to by "me".
                    632:   ----------------------------------------------------------------------*/
1.4       cvs       633: #ifdef __STDC__
1.7       cvs       634: static void         RequestKillReadXtevent (AHTReqContext * me)
1.4       cvs       635: #else
1.7       cvs       636: static void         RequestKillReadXtevent (me)
                    637: AHTReqContext      *me;
                    638: #endif /* __STDC__ */
1.4       cvs       639: {
1.7       cvs       640:    if (me->read_xtinput_id)
                    641:      {
                    642:        if (THD_TRACE)
1.18      cvs       643:           fprintf (stderr, "Request_kill: Clearing Xtinput %lu R\n", me->read_xtinput_id);
1.7       cvs       644:        XtRemoveInput (me->read_xtinput_id);
                    645:        me->read_xtinput_id = (XtInputId) NULL;
                    646:      }
1.18      cvs       647: }
                    648: 
                    649: /*----------------------------------------------------------------------
                    650:   RequestRegisterWriteXtevent
                    651:   Registers with Xt the write events associated with socket sock
                    652:   ----------------------------------------------------------------------*/
                    653: #ifdef __STDC__
                    654: static void         RequestRegisterWriteXtevent (AHTReqContext * me, SOCKET sock)
                    655: #else
                    656: static void         RequestRegisterWriteXtevent (me, sock)
                    657: AHTReqContext      *me;
                    658: SOCKET              sock;
                    659: 
                    660: #endif /* __STDC__ */
                    661: {
                    662:    if (me->write_xtinput_id)
                    663:     {
                    664:       if (THD_TRACE)
                    665:        fprintf (stderr, "Request_kill: Clearing Xtinput %lu Socket %d W\n", me->write_xtinput_id, sock);
                    666:       XtRemoveInput (me->write_xtinput_id);
                    667:     }
                    668: 
                    669:   me->write_xtinput_id =
                    670:     XtAppAddInput (app_cont,
                    671:                   sock,
                    672:                   (XtPointer) XtInputWriteMask,
                    673:                   (XtInputCallbackProc) AHTCallback_bridge,
                    674:                   (XtPointer) XtInputWriteMask);
                    675: 
                    676:   if (THD_TRACE)
                    677:     fprintf (stderr, "(BT) adding Xtinput %lu Socket %d W\n",
                    678:             me->write_xtinput_id, sock);
1.4       cvs       679: }
                    680: 
1.11      cvs       681: /*----------------------------------------------------------------------
                    682:   RequestKillWriteXtevent
                    683:   kills any write Xt event associated with the request pointed to
                    684:   by "me".
                    685:   ----------------------------------------------------------------------*/
1.4       cvs       686: #ifdef __STDC__
1.7       cvs       687: static void         RequestKillWriteXtevent (AHTReqContext * me)
1.4       cvs       688: #else
1.7       cvs       689: static void         RequestKillWriteXtevent (me)
                    690: AHTReqContext      *me;
                    691: #endif /* __STDC__ */
1.4       cvs       692: {
1.7       cvs       693:    if (me->write_xtinput_id)
                    694:      {
                    695:        if (THD_TRACE)
                    696:           fprintf (stderr, "Request_kill: Clearing Write Xtinputs %lu\n", me->write_xtinput_id);
                    697:        XtRemoveInput (me->write_xtinput_id);
                    698:        me->write_xtinput_id = (XtInputId) NULL;
                    699:      }
1.18      cvs       700: }
                    701: 
                    702: /*----------------------------------------------------------------------
                    703:   RequestRegisterExceptXtevent
                    704:   Registers with Xt the except events associated with socket sock
                    705:   ----------------------------------------------------------------------*/
                    706: #ifdef __STDC__
                    707: static void         RequestRegisterExceptXtevent (AHTReqContext * me, SOCKET sock)
                    708: #else
                    709: static void         RequestRegisterExceptXtevent (me, sock)
                    710: AHTReqContext      *me;
                    711: SOCKET              sock;
                    712: 
                    713: #endif /* __STDC__ */
                    714: {
                    715:    if (me->except_xtinput_id)
                    716:      {
                    717:        if (THD_TRACE)
                    718:           fprintf (stderr, "Request_kill: Clearing Xtinput %lu Socket %d E\n", me->except_xtinput_id, sock);
                    719:        XtRemoveInput (me->except_xtinput_id);
                    720:      }
                    721: 
                    722:   me->except_xtinput_id =
                    723:     XtAppAddInput (app_cont,
                    724:                   sock,
                    725:                   (XtPointer) XtInputExceptMask,
                    726:                   (XtInputCallbackProc) AHTCallback_bridge,
                    727:                   (XtPointer) XtInputExceptMask);
                    728: 
                    729:   if (THD_TRACE)
                    730:     fprintf (stderr, "(BT) adding Xtinput %lu Socket %d E\n",
                    731:             me->write_xtinput_id, sock);
                    732: 
1.4       cvs       733: }
                    734: 
1.11      cvs       735: /*----------------------------------------------------------------------
                    736:   RequestKillExceptXtevent
                    737:   kills any exception Xt event associated with the request pointed to
                    738:   by "me".
                    739:   ----------------------------------------------------------------------*/
1.4       cvs       740: #ifdef __STDC__
1.7       cvs       741: static void         RequestKillExceptXtevent (AHTReqContext * me)
1.4       cvs       742: #else
1.7       cvs       743: static void         RequestKillExceptXtevent (me)
                    744: AHTReqContext      *me;
                    745: #endif /* __STDC__ */
1.4       cvs       746: {
1.7       cvs       747:    if (me->except_xtinput_id)
                    748:      {
                    749:        if (THD_TRACE)
                    750:           fprintf (stderr, "Request_kill: Clearing Except Xtinputs %lu\n", me->except_xtinput_id);
                    751:        XtRemoveInput (me->except_xtinput_id);
                    752:        me->except_xtinput_id = (XtInputId) NULL;
                    753:      }
1.31      cvs       754: }
1.32      cvs       755: #endif /* !_WINDOWS */
1.31      cvs       756: 
1.23      cvs       757: #endif /* !AMAYA_JAVA */
1.36      cvs       758: 
                    759: 
                    760: 
                    761: 
                    762: 
                    763: 
                    764: 
1.11      cvs       765: 
                    766: 
                    767: 
                    768: 

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