diff options
Diffstat (limited to 'src/lib/krb5/os/hst_realm.c')
| -rw-r--r-- | src/lib/krb5/os/hst_realm.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/src/lib/krb5/os/hst_realm.c b/src/lib/krb5/os/hst_realm.c index 3c0005c..6aa3083 100644 --- a/src/lib/krb5/os/hst_realm.c +++ b/src/lib/krb5/os/hst_realm.c @@ -117,6 +117,8 @@ krb5_try_realm_txt_rr(prefix, name, realm) */ if (name == NULL || name[0] == '\0') { + if (strlen (prefix) >= sizeof(host)-1) + return KRB5_ERR_HOST_REALM_UNKNOWN; strcpy(host,prefix); } else { if ( strlen(prefix) + strlen(name) + 3 > MAX_DNS_NAMELEN ) @@ -134,12 +136,12 @@ krb5_try_realm_txt_rr(prefix, name, realm) */ h = host + strlen (host); - if (h > host && h[-1] != '.') + if ((h > host) && (h[-1] != '.') && ((h - host + 1) < sizeof(host))) strcpy (h, "."); } size = res_search(host, C_IN, T_TXT, answer.bytes, sizeof(answer.bytes)); - if (size < 0) + if ((size < sizeof(HEADER)) || (size > sizeof(answer.bytes))) return KRB5_ERR_HOST_REALM_UNKNOWN; p = answer.bytes; @@ -312,7 +314,7 @@ krb5_get_host_realm(context, host, realmsp) #ifdef KRB5_DNS_LOOKUP if (realm == (char *)NULL) { - int use_dns = _krb5_use_dns(context); + int use_dns = _krb5_use_dns_realm(context); if ( use_dns ) { /* * Since this didn't appear in our config file, try looking @@ -330,17 +332,6 @@ krb5_get_host_realm(context, host, realmsp) if (cp) cp++; } while (retval && cp && cp[0]); - if (retval) - retval = krb5_try_realm_txt_rr("_kerberos", "", &realm); - if (retval && default_realm) { - cp = default_realm; - do { - retval = krb5_try_realm_txt_rr("_kerberos", cp, &realm); - cp = strchr(cp,'.'); - if (cp) - cp++; - } while (retval && cp && cp[0]); - } } } #endif /* KRB5_DNS_LOOKUP */ |