diff options
Diffstat (limited to 'nss')
| -rw-r--r-- | nss/nss_files/files-hosts.c | 34 |
1 files changed, 12 insertions, 22 deletions
diff --git a/nss/nss_files/files-hosts.c b/nss/nss_files/files-hosts.c index 6f9f68c..e73fee0 100644 --- a/nss/nss_files/files-hosts.c +++ b/nss/nss_files/files-hosts.c @@ -53,31 +53,19 @@ LINE_PARSER STRING_FIELD (addr, isspace, 1); /* Parse address. */ - if (af == AF_INET && inet_pton (AF_INET, addr, entdata->host_addr) > 0) - { - if (flags & AI_V4MAPPED) - { - map_v4v6_address ((char *) entdata->host_addr, - (char *) entdata->host_addr); - result->h_addrtype = AF_INET6; - result->h_length = IN6ADDRSZ; - } - else - { - result->h_addrtype = AF_INET; - result->h_length = INADDRSZ; - } - } - else if (af == AF_INET6 - && inet_pton (AF_INET6, addr, entdata->host_addr) > 0) - { - result->h_addrtype = AF_INET6; - result->h_length = IN6ADDRSZ; - } - else + if (inet_pton (af, addr, entdata->host_addr) <= 0 + && (af != AF_INET6 || (flags & AI_V4MAPPED) == 0 + || inet_pton (AF_INET, addr, entdata->host_addr) <= 0 + || (map_v4v6_address ((char *) entdata->host_addr, + (char *) entdata->host_addr), + 0))) /* Illegal address: ignore line. */ return 0; + /* We always return entries of the requested form. */ + result->h_addrtype = af; + result->h_length = af == AF_INET ? INADDRSZ : IN6ADDRSZ; + /* Store a pointer to the address in the expected form. */ entdata->h_addr_ptrs[0] = entdata->host_addr; entdata->h_addr_ptrs[1] = NULL; @@ -97,6 +85,8 @@ DB_LOOKUP (hostbyname, ,, }, const char *name) #undef EXTRA_ARGS_VALUE +/* XXX Is using _res to determine whether we want to convert IPv4 addresses + to IPv6 addresses really the right thing to do? */ #define EXTRA_ARGS_VALUE \ , af, ((_res.options & RES_USE_INET6) ? AI_V4MAPPED : 0) DB_LOOKUP (hostbyname2, ,, |