void p2p_parse(UCHAR * bencode, size_t bensize, IP * from)
{
/* Tick Tock */
mutex_block(_main->work->mutex);
gettimeofday(&_main->p2p->time_now, NULL);
mutex_unblock(_main->work->mutex);
/* UDP packet too small */
if (bensize < 1) {
info(_log, from, "Zero size packet from");
return;
}
/* Ignore link-local address */
if (ip_is_linklocal(from)) {
info(_log, from, "Drop LINK-LOCAL message from");
return;
}
/* Validate bencode */
if (!ben_validate(bencode, bensize)) {
info(_log, from, "Received broken bencode from");
return;
}
/* Encrypted message or plaintext message */
#ifdef POLARSSL
if (_main->conf->bool_encryption && !ip_is_localhost(from)) {
p2p_decrypt(bencode, bensize, from);
} else {
p2p_decode(bencode, bensize, from);
}
#else
p2p_decode(bencode, bensize, from);
#endif
}
int main(int argc, char **argv) {
if(argc != 3) {
exit(1);
}
FILE *input;
RSA *key;
if(strcmp(argv[1], "-s") == 0) {
input = fopen(argv[2], "r");
key = RSA_new();
PEM_read_RSAPrivateKey(input, &key, NULL, NULL);
gcry_sexp_t d_key;
p2p_convert_private_key(key, &d_key);
RSA_free(key);
fclose(input);
struct sockaddr_in serv_addr;
serv_addr.sin_port = htons(4711);
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
int sock = socket(AF_INET, SOCK_STREAM, 0);
bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr));
listen(sock, 5);
struct sockaddr_in client_addr;
socklen_t client_addrlen = sizeof(client_addr);
int conn = accept(sock, (struct sockaddr *) &client_addr, &client_addrlen);
unsigned char buf[1000];
int datalen = recv(conn, buf, 1000, 0);
char msg[50];
int len = p2p_decrypt(buf, datalen, msg, 50, d_key);
msg[len] = 0;
printf("%s\n", msg);
} else {
input = fopen(argv[2], "r");
key = RSA_new();
PEM_read_RSA_PUBKEY(input, &key, NULL, NULL);
gcry_sexp_t r_key;
p2p_convert_public_key(key, &r_key);
RSA_free(key);
fclose(input);
struct sockaddr_in serv_addr;
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(4711);
serv_addr.sin_addr.s_addr = inet_addr("192.168.1.108");
int sock = socket(AF_INET, SOCK_STREAM, 0);
int err = connect(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr));
if(err < 0) {
perror("connect");
exit(1);
}
unsigned char buf[2000];
char msg[50];
printf("> ");
fgets(msg, 50, stdin);
size_t len = p2p_encrypt(msg, strlen(msg), buf, 2000, r_key);
send(sock, buf, len, 0);
}
return 0;
}
