From: Michael Tremer <michael.tremer@ipfire.org>
Date: Sat, 15 Apr 2023 10:46:32 +0000 (+0000)
Subject: config: Fail if there is garbage after intergers
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=92c8a4fe8806d0a84f4c546be75c0f08dc6d7200;p=network.git

config: Fail if there is garbage after intergers

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/networkd/config.c b/src/networkd/config.c
index d879ace7..42e01727 100644
--- a/src/networkd/config.c
+++ b/src/networkd/config.c
@@ -348,13 +348,23 @@ int nw_config_set(nw_config* config, const char* key, const char* value) {
 }
 
 int nw_config_get_int(nw_config* config, const char* key, const int __default) {
+	char* p = NULL;
+	int r;
+
 	const char* value = nw_config_get(config, key);
 
 	// Return zero if not set
 	if (!value)
 		return __default;
 
-	return strtoul(value, NULL, 10);
+	// Parse the input
+	r = strtoul(value, &p, 10);
+
+	// If we have characters following the input, we throw it away
+	if (p)
+		return __default;
+
+	return r;
 }
 
 int nw_config_set_int(nw_config* config, const char* key, const int value) {