accept trailing . and empty domain names

[musl] / src / network / res_querydomain.c

diff --git a/src/network/res_querydomain.c b/src/network/res_querydomain.c
index c746dbe..727e6f6 100644 (file)
--- a/src/network/res_querydomain.c
+++ b/src/network/res_querydomain.c
@@ -3,10 +3,10 @@
 
 int res_querydomain(const char *name, const char *domain, int class, int type, unsigned char *dest, int len)
 {
-       char tmp[256];
-       size_t nl = strnlen(name, 256);
-       size_t dl = strnlen(domain, 256);
-       if (nl+dl+1 > 255) return -1;
+       char tmp[255];
+       size_t nl = strnlen(name, 255);
+       size_t dl = strnlen(domain, 255);
+       if (nl+dl+1 > 254) return -1;
        memcpy(tmp, name, nl);
        tmp[nl] = '.';
        memcpy(tmp+nl+1, domain, dl+1);