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Diffstat (limited to 'exmodule.c')
-rw-r--r-- | exmodule.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/exmodule.c b/exmodule.c new file mode 100644 index 0000000..133609c --- /dev/null +++ b/exmodule.c @@ -0,0 +1,66 @@ +/* + * active port forwarder - software for secure forwarding + * Copyright (C) 2003,2004 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 put IP of the connected user into a body of the message */ +#include <string.h> +/* There is no required headers for module to work. + * We just need string.h for memcpy and strlen functions. + */ + +/* info + * return values: + * info about module + */ + +char* +info(void) +{ + return "An example module"; +} + +/* 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 + */ + +int +filter(char* host, unsigned char* message, int* length) +{ + int n; + n = strlen(host); + message[*length] = '|'; + memcpy(&message[*length+1], host, n); + *length += n+1; + return 0; /* allow to transfer */ +} |