From: Roy Marples <roy@marples.name>
Date: Tue, 7 Feb 2023 16:39:27 +0000 (+0000)
Subject: options: Match exact string for environment changes
X-Git-Tag: v9.5.0~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f03307bed9bb233054cc6cd8caa01297dca1a49;p=thirdparty%2Fdhcpcd.git

options: Match exact string for environment changes

So that domain_name doesn't overwrite domain_name_servers.
Fixes #184.
---

diff --git a/src/if-options.c b/src/if-options.c
index ae0f8826..b1a4c3c5 100644
--- a/src/if-options.c
+++ b/src/if-options.c
@@ -190,10 +190,9 @@ add_environ(char ***array, const char *value, int uniq)
 		return NULL;
 	}
 	*p++ = '\0';
-	l = strlen(match);
 
 	while (list && list[i]) {
-		if (match && strncmp(list[i], match, l) == 0) {
+		if (match && strcmp(list[i], match) == 0) {
 			if (uniq) {
 				n = strdup(value);
 				if (n == NULL) {