Honor the TTL value of SRV record lookups

Add new resolv_hostent data structure and utility functions

Resolve hosts by name from files into resolv_hostent

Resolve hosts by name from DNS into resolv_hostent

Switch resolver to using resolv_hostent and honor TTL

Conflicts:

	src/providers/fail_over.c

Provide TTL structure names for c-ares < 1.7

https://fedorahosted.org/sssd/ticket/898

In c-ares 1.7, the upstream renamed the addrttl/addr6ttl structures to
ares_addrttl/ares_addr6ttl so they are in the ares_ namespace.

Because they are committed to stable ABI, the contents are the same, just
the name changed -- so it is safe to just #define the new name for older
c-ares version in case the new one is not detected in configure time.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/providers/ipa/ipa_common.c b/src/providers/ipa/ipa_common.c
index 1a81bea75..647c1c187 100644
--- a/src/providers/ipa/ipa_common.c
+++ b/src/providers/ipa/ipa_common.c
@@ -557,7 +557,7 @@ static void ipa_resolve_callback(void *private_data, struct fo_server *server)
 {
     TALLOC_CTX *tmp_ctx = NULL;
     struct ipa_service *service;
-    struct hostent *srvaddr;
+    struct resolv_hostent *srvaddr;
     char *address;
     const char *safe_address;
     char *new_uri;
@@ -592,7 +592,7 @@ static void ipa_resolve_callback(void *private_data, struct fo_server *server)
     }
 
     safe_address = sss_ldap_escape_ip_address(tmp_ctx,
-                                              srvaddr->h_addrtype,
+                                              srvaddr->family,
                                               address);
     if (safe_address == NULL) {
         DEBUG(1, ("sss_ldap_escape_ip_address failed.\n"));