dyndns: New option dyndns_update_ptr

https://fedorahosted.org/sssd/ticket/1832

While some servers, such as FreeIPA allow the PTR record to be
synchronized when the forward record is updated, other servers,
including Active Directory, require that the PTR record is synchronized
manually.

This patch adds a new option, dyndns_update_ptr that automatically
generates appropriate DNS update message for updating the reverse zone.

This option is off by default in the IPA provider.

Also renames be_nsupdate_create_msg to be_nsupdate_create_fwd_msg

1 files changed, 20 insertions, 8 deletions

diff --git a/src/providers/dp_dyndns.h b/src/providers/dp_dyndns.h
index e49ab8f0..8fdbe487 100644
--- a/src/providers/dp_dyndns.h
+++ b/src/providers/dp_dyndns.h
@@ -46,6 +46,7 @@ enum dp_dyndns_opts {
     DP_OPT_DYNDNS_REFRESH_INTERVAL,
     DP_OPT_DYNDNS_IFACE,
     DP_OPT_DYNDNS_TTL,
+    DP_OPT_DYNDNS_UPDATE_PTR,
 
     DP_OPT_DYNDNS /* attrs counter */
 };
@@ -79,11 +80,20 @@ sss_iface_addr_list_as_str_list(TALLOC_CTX *mem_ctx,
                                 char ***_straddrs);
 
 errno_t
-be_nsupdate_create_msg(TALLOC_CTX *mem_ctx, const char *realm,
-                       const char *zone, const char *servername,
-                       const char *hostname, const unsigned int ttl,
-                       uint8_t remove_af, struct sss_iface_addr *addresses,
-                       char **_update_msg);
+be_nsupdate_create_fwd_msg(TALLOC_CTX *mem_ctx, const char *realm,
+                           const char *zone, const char *servername,
+                           const char *hostname, const unsigned int ttl,
+                           uint8_t remove_af, struct sss_iface_addr *addresses,
+                           struct sss_iface_addr *old_addresses,
+                           char **_update_msg);
+
+errno_t
+be_nsupdate_create_ptr_msg(TALLOC_CTX *mem_ctx, const char *realm,
+                           const char *servername, const char *hostname,
+                           const unsigned int ttl, uint8_t remove_af,
+                           struct sss_iface_addr *addresses,
+                           struct sss_iface_addr *old_addresses,
+                           char **_update_msg);
 
 /* Returns:
  *    * ERR_OK              - on success
@@ -100,8 +110,10 @@ struct tevent_req * nsupdate_get_addrs_send(TALLOC_CTX *mem_ctx,
                                             struct tevent_context *ev,
                                             struct be_resolv_ctx *be_res,
                                             const char *hostname);
-errno_t nsupdate_get_addrs_recv(struct tevent_req *req,
-                                TALLOC_CTX *mem_ctx,
-                                char ***_addrlist);
+errno_t
+nsupdate_get_addrs_recv(struct tevent_req *req,
+                        TALLOC_CTX *mem_ctx,
+                        struct sss_iface_addr **_addrlist,
+                        size_t *_count);
 
 #endif /* DP_DYNDNS_H_ */