copy from intranet.

src/fragroute/mod_echo.c

@@ -0,0 +1,57 @@
+/*
+ * mod_echo.c
+ *
+ * Copyright (c) 2001 Dug Song <dugsong@monkey.org>
+ *
+ * $Id: mod_echo.c 2000 2008-04-27 06:17:35Z aturner $
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "argv.h"
+#include "mod.h"
+
+void *
+echo_open(int argc, char *argv[])
+{
+	char *p;
+	
+	if (argc < 2)
+		return (NULL);
+
+	if ((p = argv_copy(argv + 1)) == NULL)
+		return (NULL);
+
+	return (p);
+}
+
+int
+echo_apply(void *d, struct pktq *pktq)
+{
+	char *p = (char *)d;
+
+	printf("%s\n", p);
+	return (0);
+}
+
+void *
+echo_close(void *d)
+{
+	if (d != NULL)
+		free(d);
+	return (NULL);
+}
+
+struct mod mod_echo = {
+	"echo",				/* name */
+	"echo <string> ...",		/* usage */
+	echo_open,			/* open */
+	echo_apply,			/* apply */
+	echo_close			/* close */
+};