| 1 | /* |
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| 2 | * xdm - display manager daemon |
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| 3 | * |
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| 4 | * $XConsortium: streams.c,v 1.2 91/08/25 10:50:29 keith Exp $ |
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| 5 | * |
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| 6 | * Copyright 1988 Massachusetts Institute of Technology |
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| 7 | * |
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| 8 | * Permission to use, copy, modify, and distribute this software and its |
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| 9 | * documentation for any purpose and without fee is hereby granted, provided |
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| 10 | * that the above copyright notice appear in all copies and that both that |
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| 11 | * copyright notice and this permission notice appear in supporting |
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| 12 | * documentation, and that the name of M.I.T. not be used in advertising or |
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| 13 | * publicity pertaining to distribution of the software without specific, |
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| 14 | * written prior permission. M.I.T. makes no representations about the |
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| 15 | * suitability of this software for any purpose. It is provided "as is" |
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| 16 | * without express or implied warranty. |
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| 17 | * |
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| 18 | * Author: Keith Packard, MIT X Consortium |
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| 19 | */ |
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| 20 | |
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| 21 | /* |
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| 22 | * streams.c - Support for STREAMS |
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| 23 | */ |
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| 24 | |
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| 25 | #include "dm.h" |
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| 26 | |
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| 27 | #ifdef XDMCP |
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| 28 | #ifdef STREAMSCONN |
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| 29 | |
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| 30 | #include <fcntl.h> |
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| 31 | #include <tiuser.h> |
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| 32 | #include <netconfig.h> |
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| 33 | #include <netdir.h> |
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| 34 | |
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| 35 | extern int xdmcpFd; |
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| 36 | extern int chooserFd; |
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| 37 | |
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| 38 | extern FD_TYPE WellKnownSocketsMask; |
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| 39 | extern int WellKnownSocketsMax; |
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| 40 | |
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| 41 | CreateWellKnownSockets () |
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| 42 | { |
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| 43 | struct t_bind bind_addr; |
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| 44 | struct netconfig *nconf; |
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| 45 | struct nd_hostserv service; |
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| 46 | struct nd_addrlist *servaddrs; |
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| 47 | char *name, *localHostname(); |
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| 48 | char bindbuf[15]; |
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| 49 | int it; |
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| 50 | |
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| 51 | if (request_port == 0) |
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| 52 | return; |
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| 53 | Debug ("creating UDP stream %d\n", request_port); |
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| 54 | |
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| 55 | nconf = getnetconfigent("udp"); |
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| 56 | if (!nconf) { |
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| 57 | t_error("getnetconfigent udp"); |
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| 58 | return; |
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| 59 | } |
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| 60 | |
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| 61 | xdmcpFd = t_open(nconf->nc_device, O_RDWR, NULL); |
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| 62 | if (xdmcpFd == -1) { |
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| 63 | LogError ("XDMCP stream creation failed\n"); |
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| 64 | t_error ("t_open"); |
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| 65 | return; |
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| 66 | } |
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| 67 | name = localHostname (); |
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| 68 | registerHostname (name, strlen (name)); |
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| 69 | RegisterCloseOnFork (xdmcpFd); |
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| 70 | |
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| 71 | service.h_host = HOST_SELF; |
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| 72 | sprintf(bindbuf, "%d", request_port); |
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| 73 | service.h_serv = bindbuf; |
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| 74 | netdir_getbyname(nconf, &service, &servaddrs); |
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| 75 | freenetconfigent(nconf); |
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| 76 | |
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| 77 | bind_addr.qlen = 5; |
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| 78 | bind_addr.addr.buf = servaddrs->n_addrs[0].buf; |
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| 79 | bind_addr.addr.len = servaddrs->n_addrs[0].len; |
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| 80 | it = t_bind(xdmcpFd, &bind_addr, &bind_addr); |
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| 81 | netdir_free(servaddrs, ND_ADDRLIST); |
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| 82 | if (it < 0) |
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| 83 | { |
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| 84 | LogError ("error binding STREAMS address %d\n", request_port); |
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| 85 | t_error("t_bind"); /* also goes to log file */ |
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| 86 | t_close (xdmcpFd); |
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| 87 | xdmcpFd = -1; |
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| 88 | return; |
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| 89 | } |
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| 90 | WellKnownSocketsMax = xdmcpFd; |
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| 91 | FD_SET (xdmcpFd, &WellKnownSocketsMask); |
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| 92 | |
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| 93 | chooserFd = t_open ("/dev/tcp", O_RDWR, NULL); |
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| 94 | Debug ("Created chooser fd %d\n", chooserFd); |
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| 95 | if (chooserFd == -1) |
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| 96 | { |
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| 97 | LogError ("chooser stream creation failed\n"); |
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| 98 | t_error("t_open chooser"); |
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| 99 | return; |
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| 100 | } |
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| 101 | if (chooserFd > WellKnownSocketsMax) |
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| 102 | WellKnownSocketsMax = chooserFd; |
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| 103 | FD_SET (chooserFd, &WellKnownSocketsMask); |
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| 104 | } |
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| 105 | |
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| 106 | GetChooserAddr (addr, lenp) |
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| 107 | char *addr; /* return */ |
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| 108 | int *lenp; /* size of addr, returned as amt used */ |
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| 109 | { |
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| 110 | struct netbuf nbuf; |
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| 111 | int retval; |
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| 112 | |
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| 113 | nbuf.buf = addr; |
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| 114 | nbuf.maxlen = *lenp; |
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| 115 | retval = t_getname (chooserFd, nbuf, LOCALNAME); |
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| 116 | if (retval < 0) { |
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| 117 | if (debugLevel > 0) |
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| 118 | t_error("t_getname on chooser fd"); |
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| 119 | } |
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| 120 | *lenp = nbuf.len; |
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| 121 | return retval; |
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| 122 | } |
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| 123 | |
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| 124 | #endif /* STREAMSCONN */ |
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| 125 | #endif /* XDMCP */ |
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