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Working ethernet II PDU. Fixed bugs in IP and added checksum calculation. Added layer2 sending to PacketSender

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This commit is contained in:
Santiago Alessandri
2011-08-15 18:16:48 -03:00
parent 5c412208f9
commit b76c9d0525
9 changed files with 192 additions and 136 deletions
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28
src/packetsender.cpp
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@@ -45,9 +45,16 @@ Tins::PacketSender::PacketSender() : _sockets(SOCKETS_END, INVALID_RAW_SOCKET) {
bool Tins::PacketSender::open_l2_socket() {
/* To be implemented */
if (_sockets[ETHER_SOCKET] != INVALID_RAW_SOCKET)
return true;
return false;
int sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
if (sock == -1)
return false;
_sockets[ETHER_SOCKET] = sock;
return true;
}
bool Tins::PacketSender::open_l3_socket(SocketType type) {
@@ -86,21 +93,28 @@ Tins::PDU *Tins::PacketSender::send_recv(PDU *pdu) {
return pdu->recv_response(this);
}
bool Tins::PacketSender::send_l2(PDU *pdu) {
bool Tins::PacketSender::send_l2(PDU *pdu, struct sockaddr* link_addr, uint32_t len_link_addr) {
/* To be implemented */
if(!open_l2_socket())
return false;
return false;
uint32_t sz;
int sock = _sockets[ETHER_SOCKET];
uint8_t *buffer = pdu->serialize(sz);
bool ret_val = (sendto(sock, buffer, sz, 0, link_addr, len_link_addr) != -1);
delete[] buffer;
return ret_val;
}
Tins::PDU *Tins::PacketSender::recv_l3(PDU *pdu, struct sockaddr *link_addr, uint32_t len_link_addr, SocketType type) {
Tins::PDU *Tins::PacketSender::recv_l3(PDU *pdu, struct sockaddr* link_addr, uint32_t len_link_addr, SocketType type) {
if(!open_l3_socket(type))
return 0;
uint8_t buffer[2048];
int sock = _sockets[type];
bool done = false;
socklen_t addrlen = len_link_addr;
while(!done) {
ssize_t size = recvfrom(sock, buffer, 2048, 0, link_addr, &addrlen);
if(size == -1)