X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Futils.c;h=c374eb5d85e0fadead7bbf2b870d78af3d4b1f54;hb=6d0452896673c36226c24144d4bde824a49c3950;hp=8fbc7108e9a3ffe8536b317e201fd5f5595566a0;hpb=38d7e730e619a8b86dfbf68d77773564595f12a1;p=tinc

diff --git a/src/utils.c b/src/utils.c
index 8fbc7108..c374eb5d 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -158,7 +158,7 @@ int b64encode_urlsafe(const void *src, char *dst, int length) {
 const char *winerror(int err) {
 	static char buf[1024], *ptr;
 
-	ptr = buf + sprintf(buf, "(%d) ", err);
+	ptr = buf + snprintf(buf, sizeof buf, "(%d) ", err);
 
 	if (!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
 		NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), ptr, sizeof(buf) - (ptr - buf), NULL)) {
@@ -191,6 +191,11 @@ bool check_id(const char *id) {
 	return true;
 }
 
+/* Windows doesn't define HOST_NAME_MAX. */
+#ifndef HOST_NAME_MAX
+#define HOST_NAME_MAX 255
+#endif
+
 char *replace_name(const char *name) {
 	char *ret_name;