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Annotation of researchv9/X11/src/X.V11R1/server/os/v9/access.c, revision 1.1.1.1

1.1       root        1: /***********************************************************
                      2: Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
                      3: and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
                      4: 
                      5:                         All Rights Reserved
                      6: 
                      7: Permission to use, copy, modify, and distribute this software and its 
                      8: documentation for any purpose and without fee is hereby granted, 
                      9: provided that the above copyright notice appear in all copies and that
                     10: both that copyright notice and this permission notice appear in 
                     11: supporting documentation, and that the names of Digital or MIT not be
                     12: used in advertising or publicity pertaining to distribution of the
                     13: software without specific, written prior permission.  
                     14: 
                     15: DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
                     16: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
                     17: DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
                     18: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
                     19: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
                     20: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
                     21: SOFTWARE.
                     22: 
                     23: ******************************************************************/
                     24: 
                     25: /* $Header: access.c,v 1.18 87/09/03 14:24:02 toddb Exp $ */
                     26: 
                     27: #include "X.h"
                     28: #include "Xproto.h"
                     29: #include "misc.h"
                     30: #include <errno.h>
                     31: #undef NULL
                     32: #include <stdio.h>
                     33: #include "dixstruct.h"
                     34: #include "osdep.h"
                     35: 
                     36: 
                     37: typedef struct _host {
                     38:        short           family;
                     39:        short           len;
                     40:        unsigned char   addr[4];        /* will need to be bigger eventually */
                     41:        struct _host *next;
                     42: } HOST;
                     43: 
                     44: static HOST *selfhosts = NULL;
                     45: static HOST *validhosts = NULL;
                     46: static int AccessEnabled = TRUE;
                     47: 
                     48: /* Define this host for access control.  Find all the hosts the OS knows about 
                     49:  * for this fd and add them to the selfhosts list.
                     50:  */
                     51: DefineSelf (fd)
                     52:     int fd;
                     53: {}
                     54: 
                     55: /* Reset access control list to initial hosts */
                     56: ResetHosts (display)
                     57:     char *display;
                     58: {}
                     59: 
                     60: /* Add a host to the access control list.  This is the external interface
                     61:  * called from the dispatcher */
                     62: 
                     63: int
                     64: AddHost (client, family, length, pAddr)
                     65:     int                        client;
                     66:     int                 family;
                     67:     int                 length;        /* of bytes in pAddr */
                     68:     pointer             pAddr;
                     69: {}
                     70: 
                     71: /* Add a host to the access control list. This is the internal interface 
                     72:  * called when starting or resetting the server */
                     73: NewHost (family, addr)
                     74:     short      family;
                     75:     pointer    addr;
                     76: {}
                     77: 
                     78: /* Remove a host from the access control list */
                     79: 
                     80: int
                     81: RemoveHost (client, family, length, pAddr)
                     82:     int                        client;
                     83:     int                 family;
                     84:     int                 length;        /* of bytes in pAddr */
                     85:     pointer             pAddr;
                     86: {}
                     87: 
                     88: /* Get all hosts in the access control list */
                     89: int
                     90: GetHosts (data, pnHosts, pEnabled)
                     91:     pointer            *data;
                     92:     int                        *pnHosts;
                     93:     BOOL               *pEnabled;
                     94: {
                     95:     *pEnabled = AccessEnabled ? EnableAccess : DisableAccess;
                     96:     *pnHosts = 0;
                     97:     return (0);
                     98: }
                     99: 
                    100: ChangeAccessControl(client, fEnabled)
                    101:     ClientPtr client;
                    102:     int fEnabled;
                    103: {}

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