Allow individual settings to be locked down

This allows a site admin who pregenerates configs to mark certain
settings as untouchable, ensuring that users cannot mess up their
settings too badly.

3 files changed, 16 insertions, 0 deletions

diff --git a/root_commands.c b/root_commands.c
index f9c6e8e9..80873c79 100644
--- a/root_commands.c
+++ b/root_commands.c
@@ -339,6 +339,10 @@ static int cmd_set_real(irc_t *irc, char **cmd, set_t **head, cmd_set_checkflags
 		set_t *s = set_find(head, set_name);
 		int st;
 
+		if (s && s->flags & SET_LOCKED) {
+			irc_rootmsg(irc, "This setting can not be changed");
+			return 0;
+		}
 		if (s && checkflags && checkflags(irc, s) == 0) {
 			return 0;
 		}
diff --git a/set.h b/set.h
index 3735d797..f0a51136 100644
--- a/set.h
+++ b/set.h
@@ -48,6 +48,7 @@ typedef enum {
 	SET_HIDDEN = 0x0200,   /* Don't show up in setting lists. Mostly for internal storage. */
 	SET_PASSWORD = 0x0400, /* Value shows up in settings list as "********". */
 	SET_HIDDEN_DEFAULT = 0x0800, /* Hide unless changed from default. */
+	SET_LOCKED = 0x1000    /* Setting is locked, don't allow changing it */
 } set_flags_t;
 
 typedef struct set {
diff --git a/storage_xml.c b/storage_xml.c
index 107983cf..dbdd151d 100644
--- a/storage_xml.c
+++ b/storage_xml.c
@@ -64,9 +64,11 @@ static void xml_init(void)
 static void handle_settings(struct xt_node *node, set_t **head)
 {
 	struct xt_node *c;
+	struct set *s;
 
 	for (c = node->children; (c = xt_find_node(c, "setting")); c = c->next) {
 		char *name = xt_find_attr(c, "name");
+		char *locked = xt_find_attr(c, "locked");
 
 		if (!name) {
 			continue;
@@ -79,6 +81,12 @@ static void handle_settings(struct xt_node *node, set_t **head)
 			}
 		}
 		set_setstr(head, name, c->text);
+		if (locked && !g_strcasecmp(locked, "true")) {
+			s = set_find(head, name);
+			if (s) {
+				s->flags |= SET_LOCKED;
+			}
+		}
 	}
 }
 
@@ -370,6 +378,9 @@ static void xml_generate_settings(struct xt_node *cur, set_t **head)
 			struct xt_node *xset;
 			xt_add_child(cur, xset = xt_new_node("setting", set->value, NULL));
 			xt_add_attr(xset, "name", set->key);
+			if (set->flags & SET_LOCKED) {
+				xt_add_attr(xset, "locked", "true");
+			}
 		}
 	}
 }