Fixed exclude_users to work, added more users, alway skip tacacs[0-9]*

Ticket: CM-19886
Reviewed By:  nobody
Testing Done:

Somehow exclude_users wasn't implemented (or got deleted somewhere
along the line).

Make list match tacplus_client, except exclude our own mapped users
by matching config items, and also skip any user starting with
tacacs[0-9] inline instead of listing all 16 in exclude_users field
in config file.

Implemened for mapped_priv_user too, since that work is ongoing.
Listed change in debian/changelog

If debug is set to 2 or higher, print that the name lookup was skipped
due to exclusion.

1 files changed, 9 insertions, 0 deletions

diff --git a/map_common.c b/map_common.c
index 1c3bfa9..f7ee038 100644
--- a/map_common.c
+++ b/map_common.c
@@ -35,6 +35,7 @@ static const char config_file[] = "/etc/nss_mapuser.conf";
  * in build, so local to the shared lib. */
 char *exclude_users; /*  don't lookup these users */
 char *mappeduser;
+char *mapped_priv_user;
 uid_t min_uid = DEF_MIN_UID;
 int debug;
 
@@ -54,6 +55,10 @@ reset_config(void)
         (void)free(mappeduser);
         mappeduser = NULL;
     }
+    if(mapped_priv_user) {
+        (void)free(mapped_priv_user);
+        mapped_priv_user = NULL;
+    }
     debug = 0;
     min_uid = DEF_MIN_UID;
 }
@@ -117,6 +122,10 @@ nss_mapuser_config(int *errnop, const char *lname)
             /*  the user we are mapping to */
             mappeduser = strdup(lbuf+12);
         }
+        else if(!strncmp(lbuf, "mapped_priv_user=", 17)) {
+            /*  the user we are mapping to */
+            mapped_priv_user = strdup(lbuf+17);
+        }
         else if(!strncmp(lbuf, "min_uid=", 8)) {
             /*
              * Don't lookup uids that are local, typically set to either