diff --git a/match.h b/match.h
new file mode 100644
index 0000000..4625d97
--- /dev/null
+++ b/match.h
@@ -0,0 +1,18 @@
+#ifndef MATCH_H
+#define MATCH_H
+
+/*
+ * Returns true if the given string matches the pattern (which may contain ?
+ * and * as wildcards), and zero if it does not match.
+ */
+int     match_pattern(const char *s, const char *pattern);
+
+/*
+ * Tries to match the host name (which must be in all lowercase) against the
+ * comma-separated sequence of subpatterns (each possibly preceded by ! to
+ * indicate negation).  Returns true if there is a positive match; zero
+ * otherwise.
+ */
+int     match_hostname(const char *host, const char *pattern, unsigned int len);
+
+#endif