diff options
Diffstat (limited to 'tdm/backend/netaddr.c')
| -rw-r--r-- | tdm/backend/netaddr.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/tdm/backend/netaddr.c b/tdm/backend/netaddr.c new file mode 100644 index 000000000..349a53528 --- /dev/null +++ b/tdm/backend/netaddr.c @@ -0,0 +1,219 @@ +/* + +Copyright 1991, 1998 The Open Group +Copyright 2002 Sun Microsystems, Inc. All rights reserved. + +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 COPYRIGHT HOLDERS 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 a copyright holder 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 copyright holder. + +*/ + +/* + * xdm - display manager daemon + * Author: Keith Packard, MIT X Consortium + * + * netaddr.c - Interpretation of XdmcpNetaddr object. + */ + +#include "dm.h" +#include "dm_socket.h" +#include "dm_error.h" + +/* given an char *, returns the socket protocol family used, + e.g., AF_INET */ + +int +NetaddrFamily( char *netaddrp ) +{ +#ifdef STREAMSCONN + short family = *(short *)netaddrp; + return family; +#else + return ((struct sockaddr *)netaddrp)->sa_family; +#endif +} + + +/* given an char *, 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( char *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 char *, returns a pointer to the network address + and sets *lenp to the length of the address */ + +char * +NetaddrAddress( char *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 char *, 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( char *saddr, int *len, char **addr ) +{ + int retval; + + if (len == 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; +} + +#ifdef XDMCP +int +addressEqual( char *a1, int len1, char *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; +} +#endif |