Support negated sudoHost entries.

diff --git a/plugins/sudoers/ldap.c b/plugins/sudoers/ldap.c
index 4b2b0ed371736b3959d8f58794d343c46a30261d..fa65368d27cda8b7545c8f7ade12c640ae162811 100644 (file)
--- a/plugins/sudoers/ldap.c
+++ b/plugins/sudoers/ldap.c
@@ -722,6 +722,7 @@ sudo_ldap_check_host(LDAP *ld, LDAPMessage *entry, struct passwd *pw)
     struct berval **bv, **p;
     char *val;
     bool ret = false;
+    bool foundbang = false;
     debug_decl(sudo_ldap_check_host, SUDOERS_DEBUG_LDAP)
 
     if (!entry)
@@ -733,14 +734,20 @@ sudo_ldap_check_host(LDAP *ld, LDAPMessage *entry, struct passwd *pw)
        debug_return_bool(ret);
 
     /* walk through values */
-    for (p = bv; *p != NULL && !ret; p++) {
+    for (p = bv; *p != NULL && !foundbang; p++) {
        val = (*p)->bv_val;
+
+       if (*val == '!') {
+           val++;
+           foundbang = true;
+       }
+
        /* match any or address or netgroup or hostname */
        if (strcmp(val, "ALL") == 0 || addr_matches(val) ||
            netgr_matches(val, user_runhost, user_srunhost,
            def_netgroup_tuple ? pw->pw_name : NULL) ||
            hostname_matches(user_srunhost, user_runhost, val))
-           ret = true;
+           ret = !foundbang;
        DPRINTF2("ldap sudoHost '%s' ... %s", val, ret ? "MATCH!" : "not");
     }