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Annotation of 43BSDTahoe/new/X/doc/Xlib/ch11a.t, revision 1.1

1.1     ! root        1: .NH
        !             2: Other X Server Functions
        !             3: .XS
        !             4: Other X Server Functions
        !             5: .XE
        !             6: .NH 2
        !             7: Access Control
        !             8: .PP
        !             9: .IN "Access Control"
        !            10: .IN "Internet Addresses"
        !            11: .IN "DECnet Addresses"
        !            12: .IN "Authentication"
        !            13: X does not provide any protection on a per-window basis.
        !            14: If you find out the resource id of a resource, you can manipulate it.
        !            15: To provide some minimal level of protection, however,
        !            16: connections are only permitted from machines you trust.
        !            17: This is adequate on single user workstations, but obviously
        !            18: breaks down on timesharing machines.
        !            19: In the long run, it is expected that X will use a real network
        !            20: authentication server, so we have only minimal facilities for the
        !            21: time being.
        !            22: Both DECnet and TCP domains are possible to use.
        !            23: .PP
        !            24: .IN "Default Protection"
        !            25: On a VAX, the initial set of hosts allowed to open connections consists
        !            26: .IN "File" "/etc/X?.hosts"
        !            27: of:
        !            28: .sp
        !            29:    \(bu the host the window system is running on
        !            30:    \(bu each host listed in \fI/etc/X?.hosts\fP, where `?' is the number of the
        !            31: display.
        !            32: .sp
        !            33: This file should consist of host names separated by newlines.
        !            34: DECnet nodes must terminate in ``::'' to distinguish them from internet hosts.
        !            35: .FD
        !            36: .IN "Definitions" "XAddHost"
        !            37: .IN "XAddHost"
        !            38: .IN "File" "<sys/socket.h>"
        !            39: #include <sys/socket.h>
        !            40: XAddHost (host)
        !            41:        struct in_addr *host;   /* network address */
        !            42: .FN
        !            43: Add the specified host to the list of hosts allowed to open connections
        !            44: to this display.
        !            45: The display hardware must be on the same host as the program issuing the
        !            46: command.
        !            47: .FD
        !            48: .IN "Definitions" "XAddNode"
        !            49: .IN "XAddNode"
        !            50: .IN "File" "<netdnet/dn.h>"
        !            51: #include <netdnet/dn.h>
        !            52: XAddNode (node)
        !            53:        struct dn_naddr *node;  /* network address */
        !            54: .FN
        !            55: Add the specified DECnet node to the list of nodes allowed to open connections
        !            56: to this display.
        !            57: The display hardware must be on the same host as the program issuing the
        !            58: command.
        !            59: .FD
        !            60: .IN "Definitions" "XRemoveHost"
        !            61: .IN "XRemoveHost"
        !            62: .IN "File" "<sys/socket.h>"
        !            63: #include <sys/socket.h>
        !            64: XRemoveHost (host)
        !            65:        struct in_addr *host;   /* network address */
        !            66: .FN
        !            67: Remove the specified host from the list of hosts allowed to open
        !            68: connections to the display.  
        !            69: The display hardware must be on the same host as the
        !            70: client process.
        !            71: If you remove your machine from the access list, no new connections
        !            72: can be made.
        !            73: There is no way back from this call short of logout!
        !            74: .FD
        !            75: .IN "Definitions" "XRemoveNode"
        !            76: .IN "XRemoveNode"
        !            77: .IN "File" "<netdnet/dn.h>"
        !            78: #include <netdnet/dn.h>
        !            79: XRemoveNode (node)
        !            80:        struct dn_naddr *node;  /* network address */
        !            81: .FN
        !            82: Remove the specified DECnet node from the list of nodes allowed to open
        !            83: connections to the display.  
        !            84: The display hardware must be on the same node as the
        !            85: client process.
        !            86: If you remove your machine from the access list, no new connections
        !            87: can be made.
        !            88: There is no way back from this call short of logout!
        !            89: .FD
        !            90: .IN "Definitions" "XGetHosts"
        !            91: .IN "XGetHosts"
        !            92: .IN "File" "<sys/socket.h>"
        !            93: #include <sys/socket.h>
        !            94: struct in_addr *XGetHosts (nhosts)
        !            95:        int *nhosts;    /* RETURN */
        !            96: .FN
        !            97: Returns the current list of hosts allowed to open connections.
        !            98: This allows a program to find out what machines can make connections.
        !            99: Space is allocated and function returns a pointer to an array of hosts in the list.
        !           100: The number of hosts are returned in the \fInhosts\fP argument.
        !           101: This memory should be freed when no longer in use.
        !           102: .FD
        !           103: .IN "Definitions" "XGetNodes"
        !           104: .IN "XGetNodes"
        !           105: .IN "File" "<netdnet/dn.h>"
        !           106: #include <netdnet/dn.h>
        !           107: struct dn_naddr *XGetNodes (nnodes)
        !           108:        int *nnodes;    /* RETURN */
        !           109: .FN
        !           110: Returns the current list of DECnet nodes allowed to open connections.
        !           111: This allows a program to find out what machines can make connections.
        !           112: Space is allocated and function returns a pointer to an array of hosts in the list.
        !           113: The number of nodes are returned in the \fInodes\fP argument.
        !           114: This memory should be freed when no longer in use.

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