273 lines
6.3 KiB
C
273 lines
6.3 KiB
C
/*
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Copyright 1991, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from The Open Group.
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*/
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/*
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* xdm - X display manager
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*
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* netaddr.c - Interpretation of XdmcpNetaddr object.
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*/
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#include "dm.h"
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#include "dm_error.h"
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#include <X11/X.h> /* FamilyInternet, etc. */
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#ifdef XDMCP
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# include "dm_socket.h"
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# ifdef UNIXCONN
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# ifndef X_NO_SYS_UN
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# include <sys/un.h> /* struct sockaddr_un */
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# endif
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# endif
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# ifdef DNETCONN
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# include <netdnet/dn.h> /* struct sockaddr_dn */
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# endif
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/* given an XdmcpNetaddr, returns the socket protocol family used,
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e.g., AF_INET */
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int NetaddrFamily(XdmcpNetaddr netaddrp)
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{
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# ifdef STREAMSCONN
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short family = *(short *)netaddrp;
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return family;
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# else
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return ((struct sockaddr *)netaddrp)->sa_family;
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# endif
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}
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/* given an XdmcpNetaddr, returns a pointer to the TCP/UDP port used
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and sets *lenp to the length of the address
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or 0 if not using TCP or UDP. */
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char * NetaddrPort(XdmcpNetaddr netaddrp, int *lenp)
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{
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# ifdef STREAMSCONN
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*lenp = 2;
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return netaddrp+2;
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# else
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switch (NetaddrFamily(netaddrp))
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{
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case AF_INET:
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*lenp = 2;
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return (char *)&(((struct sockaddr_in *)netaddrp)->sin_port);
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# if defined(IPv6) && defined(AF_INET6)
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case AF_INET6:
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*lenp = 2;
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return (char *)&(((struct sockaddr_in6 *)netaddrp)->sin6_port);
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# endif
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default:
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*lenp = 0;
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return NULL;
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}
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# endif
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}
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/* given an XdmcpNetaddr, returns a pointer to the network address
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and sets *lenp to the length of the address */
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char * NetaddrAddress(XdmcpNetaddr netaddrp, int *lenp)
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{
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# ifdef STREAMSCONN
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*lenp = 4;
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return netaddrp+4;
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# else
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switch (NetaddrFamily(netaddrp)) {
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# ifdef UNIXCONN
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case AF_UNIX:
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*lenp = strlen(((struct sockaddr_un *)netaddrp)->sun_path);
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return (char *) (((struct sockaddr_un *)netaddrp)->sun_path);
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# endif
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# ifdef TCPCONN
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case AF_INET:
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*lenp = sizeof (struct in_addr);
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return (char *) &(((struct sockaddr_in *)netaddrp)->sin_addr);
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# if defined(IPv6) && defined(AF_INET6)
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case AF_INET6:
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{
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struct in6_addr *a = &(((struct sockaddr_in6 *)netaddrp)->sin6_addr);
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if (IN6_IS_ADDR_V4MAPPED(a)) {
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*lenp = sizeof (struct in_addr);
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return ((char *) &(a->s6_addr))+12;
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} else {
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*lenp = sizeof (struct in6_addr);
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return (char *) &(a->s6_addr);
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}
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}
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# endif
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# endif
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# ifdef DNETCONN
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case AF_DECnet:
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*lenp = sizeof (struct dn_naddr);
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return (char *) &(((struct sockaddr_dn *)netaddrp)->sdn_add);
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# endif
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# ifdef AF_CHAOS
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case AF_CHAOS:
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# endif
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default:
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*lenp = 0;
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return NULL;
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}
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# endif /* STREAMSCONN else */
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}
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/* given an XdmcpNetaddr, sets *addr to the network address used and
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sets *len to the number of bytes in addr.
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Returns the X protocol family used, e.g., FamilyInternet */
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int ConvertAddr (XdmcpNetaddr saddr, int *len, char **addr)
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{
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int retval;
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if ((len == NULL) || (saddr == NULL))
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return -1;
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*addr = NetaddrAddress(saddr, len);
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# ifdef STREAMSCONN
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/* kludge */
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if (NetaddrFamily(saddr) == 2)
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retval = FamilyInternet;
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# else
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switch (NetaddrFamily(saddr))
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{
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# ifdef AF_UNSPEC
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case AF_UNSPEC:
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retval = FamilyLocal;
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break;
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# endif
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# ifdef AF_UNIX
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# ifndef hpux
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case AF_UNIX:
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retval = FamilyLocal;
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break;
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# endif
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# endif
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# ifdef TCPCONN
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case AF_INET:
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retval = FamilyInternet;
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break;
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# if defined(IPv6) && defined(AF_INET6)
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case AF_INET6:
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if (*len == sizeof(struct in_addr))
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retval = FamilyInternet;
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else
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retval = FamilyInternet6;
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break;
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# endif
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# endif
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# ifdef DNETCONN
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case AF_DECnet:
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retval = FamilyDECnet;
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break;
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# endif
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# ifdef AF_CHAOS
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case AF_CHAOS:
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retval = FamilyChaos;
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break;
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# endif
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default:
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retval = -1;
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break;
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}
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# endif /* STREAMSCONN else */
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Debug ("ConvertAddr returning %d for family %d\n", retval,
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NetaddrFamily(saddr));
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return retval;
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}
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int
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addressEqual (XdmcpNetaddr a1, int len1, XdmcpNetaddr a2, int len2)
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{
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int partlen1, partlen2;
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char *part1, *part2;
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if (len1 != len2)
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{
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return FALSE;
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}
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if (NetaddrFamily(a1) != NetaddrFamily(a2))
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{
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return FALSE;
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}
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part1 = NetaddrPort(a1, &partlen1);
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part2 = NetaddrPort(a2, &partlen2);
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if (partlen1 != partlen2 || memcmp(part1, part2, partlen1) != 0)
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{
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return FALSE;
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}
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part1 = NetaddrAddress(a1, &partlen1);
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part2 = NetaddrAddress(a2, &partlen2);
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if (partlen1 != partlen2 || memcmp(part1, part2, partlen1) != 0)
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{
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return FALSE;
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}
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return TRUE;
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}
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# ifdef DEBUG
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/*ARGSUSED*/
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void
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PrintSockAddr (struct sockaddr *a, int len)
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{
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unsigned char *t, *p;
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Debug ("family %d, ", a->sa_family);
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switch (a->sa_family) {
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# ifdef AF_INET
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case AF_INET:
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p = (unsigned char *) &((struct sockaddr_in *) a)->sin_port;
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t = (unsigned char *) &((struct sockaddr_in *) a)->sin_addr;
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Debug ("port %d, host %d.%d.%d.%d\n",
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(p[0] << 8) + p[1], t[0], t[1], t[2], t[3]);
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break;
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# endif
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# if defined(IPv6) && defined(AF_INET6)
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case AF_INET6:
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{
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char astr[INET6_ADDRSTRLEN] = "";
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inet_ntop(a->sa_family, &((struct sockaddr_in6 *) a)->sin6_addr,
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astr, sizeof(astr));
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p = (unsigned char *) &((struct sockaddr_in6 *) a)->sin6_port;
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Debug ("port %d, host %s\n", (p[0] << 8) + p[1], astr);
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break;
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}
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# endif
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}
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}
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# endif
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#endif /* XDMCP */
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