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