diff options
author | Christian Pointner <equinox@anytun.org> | 2008-12-28 10:36:20 +0000 |
---|---|---|
committer | Christian Pointner <equinox@anytun.org> | 2008-12-28 10:36:20 +0000 |
commit | 65dd1b1e7b663d5b1f18171ff1de0b46a6196d2c (patch) | |
tree | 5591bf544a9aa2d84bcf906b57893b8b9c19aabd /src/encrypted_packet.c | |
parent | added plain packet (diff) |
added encrypted packet
some cleanup
Diffstat (limited to 'src/encrypted_packet.c')
-rw-r--r-- | src/encrypted_packet.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/encrypted_packet.c b/src/encrypted_packet.c new file mode 100644 index 0000000..7be3cd5 --- /dev/null +++ b/src/encrypted_packet.c @@ -0,0 +1,139 @@ +/* + * ľAnytun + * + * ľAnytun is a tiny implementation of SATP. Unlike Anytun which is a full + * featured implementation ľAnytun has no support for multiple connections + * or synchronisation. It is a small single threaded implementation intended + * to act as a client on small platforms. + * The secure anycast tunneling protocol (satp) defines a protocol used + * for communication between any combination of unicast and anycast + * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel + * mode and allows tunneling of every ETHER TYPE protocol (e.g. + * ethernet, ip, arp ...). satp directly includes cryptography and + * message authentication based on the methodes used by SRTP. It is + * intended to deliver a generic, scaleable and secure solution for + * tunneling and relaying of packets of any protocol. + * + * + * Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org> + * + * This file is part of ľAnytun. + * + * ľAnytun is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 3 as + * published by the Free Software Foundation. + * + * ľAnytun 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 ľAnytun. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "datatypes.h" + +#include "encrypted_packet.h" + +#include <stdlib.h> +#include <string.h> + +void encrypted_packet_init(encrypted_packet_t* packet) +{ + if(!packet) + return; + + memset (packet, 0, sizeof(*packet)); +} + +u_int8_t* encrypted_packet_get_packet(encrypted_packet_t* packet) +{ + if(!packet) + return NULL; + + return packet->data_.buf_; +} + +u_int32_t encrypted_packet_get_length(encrypted_packet_t* packet) +{ + if(!packet) + return 0; + + return (packet->payload_length_ + sizeof(encrypted_packet_header_t)); +} + +u_int8_t* encrypted_packet_get_payload(encrypted_packet_t* packet) +{ + if(!packet) + return NULL; + + return (packet->data_.buf_ + sizeof(encrypted_packet_header_t)); +} + +u_int32_t encrypted_packet_get_payload_length(encrypted_packet_t* packet) +{ + if(!packet) + return 0; + + return packet->payload_length_; +} + +void encrypted_packet_set_payload_length(encrypted_packet_t* packet, u_int32_t len) +{ + if(!packet) + return; + + if(len > ENCRYPTED_PACKET_SIZE_MAX || (len + sizeof(encrypted_packet_header_t)) > ENCRYPTED_PACKET_SIZE_MAX) + len = ENCRYPTED_PACKET_SIZE_MAX - sizeof(encrypted_packet_header_t); + + packet->payload_length_ = len; +} + +seq_nr_t encrypted_packet_get_seq_nr(encrypted_packet_t* packet) +{ + if(!packet) + return 0; + + return SEQ_NR_T_NTOH(packet->data_.header_.seq_nr_); +} + +void encrypted_packet_set_seq_nr(encrypted_packet_t* packet, seq_nr_t seq_nr) +{ + if(!packet) + return; + + packet->data_.header_.seq_nr_ = SEQ_NR_T_HTON(seq_nr); +} + +sender_id_t encrypted_packet_get_sender_id(encrypted_packet_t* packet) +{ + if(!packet) + return 0; + + return SENDER_ID_T_NTOH(packet->data_.header_.sender_id_); +} + +void encrypted_packet_set_sender_id(encrypted_packet_t* packet, sender_id_t sender_id) +{ + if(!packet) + return; + + packet->data_.header_.sender_id_ = SENDER_ID_T_HTON(sender_id); +} + +mux_t encrypted_packet_get_mux(encrypted_packet_t* packet) +{ + if(!packet) + return 0; + + return MUX_T_NTOH(packet->data_.header_.mux_); +} + +void encrypted_packet_set_mux(encrypted_packet_t* packet, mux_t mux) +{ + if(!packet) + return; + + packet->data_.header_.mux_ = MUX_T_HTON(mux); +} |