2 files changed, 85 insertions, 0 deletions
diff --git a/modules/Makefile.am b/modules/Makefile.am
new file mode 100644
index 0000000..7e80e7c
--- /dev/null
+++ b/modules/Makefile.am
@@ -0,0 +1,3 @@
+noinst_PROGRAMS = exmodule
+exmodule_SOURCES = exmodule.c
+exmodule_LDFLAGS = -fPIC -shared
diff --git a/modules/exmodule.c b/modules/exmodule.c
new file mode 100644
index 0000000..08eb842
--- /dev/null
+++ b/modules/exmodule.c
@@ -0,0 +1,82 @@
+/*
+ * active port forwarder - software for secure forwarding
+ * Copyright (C) 2003,2004,2005 jeremian <jeremian [at] poczta.fm>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+/* This example module scan the message for specified string and perform
+ * appropriate action
+ */
+
+/* info
+ * return values:
+ * info about module
+ */
+
+char*
+info(void)
+{
+	return "Module tester v0.1";
+}
+
+/* allow
+ * return values:
+ * 0 - allow to connect
+ * !=0 - drop the connection
+ */
+
+int
+allow(char* host, char* port)
+{
+	return 0; /* allow to connect */
+}
+
+/* filter
+ * return values:
+ * 0 - allow to transfer
+ * 1 - drop the packet
+ * 2 - drop the connection
+ * 3 - release the module
+ * 4 - drop the packet and release the module
+ * 5 - drop the connection and release the module
+ */
+
+int
+filter(char* host, unsigned char* message, int* length)
+{
+  int i;
+  for (i = 1; i < *length; ++i) {
+    if (message[i-1] == 'M') {
+      if (message[i] == '1') {
+        return 1; /* ignored */
+      }
+      if (message[i] == '2') {
+        return 2; /* dropped */
+      }
+      if (message[i] == '3') {
+        return 3; /* release */
+      }
+      if (message[i] == '4') {
+        return 4; /* ignored + release */
+      }
+      if (message[i] == '5') {
+        return 5; /* dropped + release */
+      }
+    }
+  }
+  return 0; /* allow to transfer */
+}