krb5 commit: Remove unused async binding code in LDAP

https://github.com/krb5/krb5/commit/6649761a19ed4c727bcc50073b8d6452b3ccdbb2
commit 6649761a19ed4c727bcc50073b8d6452b3ccdbb2
Author: Greg Hudson <[email protected]>
Date:   Mon Jun 26 17:52:10 2017 -0400

    Remove unused async binding code in LDAP
    
    The server_info_update_pending field of krb5_ldap_server_handle was
    never set to true, and we never define ASYNC_BIND.  Noted by Will
    Fiveash.

 src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap.h      |    1 -
 src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap_conn.c |    1 -
 src/plugins/kdb/ldap/libkdb_ldap/ldap_handle.c   |   68 ----------------------
 3 files changed, 0 insertions(+), 70 deletions(-)

diff --git a/src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap.h b/src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap.h
index 5c8539a..535a1f3 100644
--- a/src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap.h
+++ b/src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap.h
@@ -171,7 +171,6 @@ typedef struct _krb5_ldap_server_info krb5_ldap_server_info;
 typedef struct  _krb5_ldap_server_handle {
     int                              msgid;
     LDAP                             *ldap_handle;
-    krb5_boolean                     server_info_update_pending;
     krb5_ldap_server_info            *server_info;
     struct _krb5_ldap_server_handle  *next;
 } krb5_ldap_server_handle;
diff --git a/src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap_conn.c b/src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap_conn.c
index d904c99..cee4b7b 100644
--- a/src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap_conn.c
+++ b/src/plugins/kdb/ldap/libkdb_ldap/kdb_ldap_conn.c
@@ -193,7 +193,6 @@ initialize_server(krb5_ldap_context *ldap_context, krb5_ldap_server_info *info)
         return ret;
     }
 
-    server->server_info_update_pending = FALSE;
     server->next = info->ldap_server_handles;
     info->ldap_server_handles = server;
     info->num_conns++;
diff --git a/src/plugins/kdb/ldap/libkdb_ldap/ldap_handle.c b/src/plugins/kdb/ldap/libkdb_ldap/ldap_handle.c
index 77d8f81..2f5d3d9 100644
--- a/src/plugins/kdb/ldap/libkdb_ldap/ldap_handle.c
+++ b/src/plugins/kdb/ldap/libkdb_ldap/ldap_handle.c
@@ -30,62 +30,6 @@
 
 #include "ldap_main.h"
 
-
-#ifdef ASYNC_BIND
-
-/*
- * Update the server info structure. In case of an asynchronous bind,
- * this function is called to check the bind status. A flag
- * server_info_upate_pending is refered before calling this function.
- * This function sets the server_status to either ON or OFF and
- * sets the server_info_udpate_pending to OFF.
- * Do not lock the mutex here. The caller should lock it
- */
-
-static krb5_error_code
-krb5_update_server_info(krb5_ldap_server_handle *ldap_server_handle,
-                        krb5_ldap_server_info *server_info)
-{
-    krb5_error_code            st=0;
-    struct timeval             ztime={0, 0};
-    LDAPMessage                *result=NULL;
-
-    if (ldap_server_handle == NULL || server_info == NULL)
-        return -1;
-
-    while (st == 0) {
-        st = ldap_result(ldap_server_handle->ldap_handle, ldap_server_handle->msgid,
-                         LDAP_MSG_ALL, &ztime, &result);
-        switch (st) {
-        case -1:
-            server_info->server_status = OFF;
-            time(&server_info->downtime);
-            break;
-
-        case 0:
-            continue;
-            break;
-
-        case LDAP_RES_BIND:
-            if ((st=ldap_result2error(ldap_server_handle->ldap_handle, result, 1)) == LDAP_SUCCESS) {
-                server_info->server_status = ON;
-            } else {
-                server_info->server_status = OFF;
-                time(&server_info->downtime);
-            }
-            ldap_msgfree(result);
-            break;
-        default:
-            ldap_msgfree(result);
-            continue;
-            break;
-        }
-    }
-    ldap_server_handle->server_info_update_pending = FALSE;
-    return 0;
-}
-#endif
-
 /*
  * Return ldap server handle from the pool. If the pool is exhausted return NULL.
  * Do not lock the mutex, caller should lock it
@@ -105,18 +49,6 @@ krb5_get_ldap_handle(krb5_ldap_context *ldap_context)
                 ldap_server_handle = ldap_server_info->ldap_server_handles;
                 ldap_server_info->ldap_server_handles = ldap_server_handle->next;
                 break;
-#ifdef ASYNC_BIND
-                if (ldap_server_handle->server_info_update_pending == TRUE) {
-                    krb5_update_server_info(context, ldap_server_handle,
-                                            ldap_server_info);
-                }
-
-                if (ldap_server_info->server_status == ON) {
-                    ldap_server_info->ldap_server_handles = ldap_server_handle->next;
-                    break;
-                } else
-                    ldap_server_handle = NULL;
-#endif
             }
         }
         ++cnt;