From: Guus Sliepen <guus@tinc-vpn.org>
Date: Fri, 20 Jul 2012 15:29:16 +0000 (+0200)
Subject: Never remove items from cmdline_conf.
X-Git-Tag: release-1.1pre3~99
X-Git-Url: https://git.tinc-vpn.org/git/browse?a=commitdiff_plain;h=4591e96c76914795aaae317c067f16abc22fb2e0;p=tinc

Never remove items from cmdline_conf.

We should treat cmdline_conf as const, so we can call read_config_options()
more than once with prefix = NULL.
---

diff --git a/src/conf.c b/src/conf.c
index f580a203..d50dc525 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -339,33 +339,31 @@ bool read_config_file(splay_tree_t *config_tree, const char *fname) {
 }
 
 void read_config_options(splay_tree_t *config_tree, const char *prefix) {
-	list_node_t *node, *next;
 	size_t prefix_len = prefix ? strlen(prefix) : 0;
 
-	for(node = cmdline_conf->tail; node; node = next) {
-		config_t *orig_cfg, *cfg = (config_t *)node->data;
-		next = node->prev;
+	for(const list_node_t *node = cmdline_conf->tail; node; node = node->prev) {
+		const config_t *cfg = node->data;
+		config_t *new;
 
 		if(!prefix) {
 			if(strchr(cfg->variable, '.'))
 				continue;
-			node->data = NULL;
-			list_unlink_node(cmdline_conf, node);
 		} else {
 			if(strncmp(prefix, cfg->variable, prefix_len) ||
 			   cfg->variable[prefix_len] != '.')
 				continue;
-			/* Because host configuration is parsed again when
-			   reconnecting, nodes must not be freed when a prefix
-			   is given. */
-			orig_cfg = cfg;
-			cfg = new_config();
-			cfg->variable = xstrdup(orig_cfg->variable + prefix_len + 1);
-			cfg->value = xstrdup(orig_cfg->value);
-			cfg->file = NULL;
-			cfg->line = orig_cfg->line;
 		}
-		config_add(config_tree, cfg);
+
+		new = new_config();
+		if(prefix)
+			new->variable = xstrdup(cfg->variable + prefix_len + 1);
+		else
+			new->variable = xstrdup(cfg->variable);
+		new->value = xstrdup(cfg->value);
+		new->file = NULL;
+		new->line = cfg->line;
+
+		config_add(config_tree, new);
 	}
 }