diff options
Diffstat (limited to 'gethost.c')
| -rw-r--r-- | gethost.c | 40 |
1 files changed, 35 insertions, 5 deletions
@@ -227,16 +227,36 @@ struct addrlist *get_address_info ( for (ai = firstai; ai != NULL; ai = ai->ai_next) { struct addrlist *duplicate; + len = 0; if (ai->ai_family == AF_INET) { struct sockaddr_in *sin = (struct sockaddr_in *)ai->ai_addr; src = &(sin->sin_addr); - len = sizeof(sin->sin_addr); - family = FamilyInternet; + if (*(in_addr_t *) src == htonl(INADDR_LOOPBACK)) { + family = FamilyLocal; + if (get_local_hostname (buf, sizeof buf)) { + src = buf; + len = strlen (buf); + } else + src = NULL; + } else { + len = sizeof(sin->sin_addr); + family = FamilyInternet; + } } else if (ai->ai_family == AF_INET6) { struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)ai->ai_addr; src = &(sin6->sin6_addr); - len = sizeof(sin6->sin6_addr); - family = FamilyInternet6; + if (IN6_IS_ADDR_V4MAPPED((struct sockaddr_in6 *)src) + || IN6_IS_ADDR_LOOPBACK((struct sockaddr_in6 *)src)) { + family = FamilyLocal; + if (get_local_hostname (buf, sizeof buf)) { + src = buf; + len = strlen (buf); + } else + src = NULL; + } else { + len = sizeof(sin6->sin6_addr); + family = FamilyInternet6; + } } for(duplicate = retval; duplicate != NULL; duplicate = duplicate->next) { @@ -275,7 +295,17 @@ struct addrlist *get_address_info ( #else if (!get_inet_address (host, &hostinetaddr)) return NULL; src = (char *) &hostinetaddr; - len = 4; /* sizeof inaddr.sin_addr, would fail on Cray */ + if (*(in_addr_t *) src == htonl(INADDR_LOOPBACK)) { + family = FamilyLocal; + if (get_local_hostname (buf, sizeof buf)) { + src = buf; + len = strlen (buf); + } else { + len = 0; + src = NULL; + } + } else + len = 4; /* sizeof inaddr.sin_addr, would fail on Cray */ break; #endif /* IPv6 */ #else |