agorise/c-libp2p
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Multistream nearing completion

Browse source
This commit is contained in:
John Jones 2017-02-02 15:43:35 -05:00
parent d091a29b19
commit 6b24f06855
3 changed files with 40 additions and 40 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
net/multistream.c
View file

@ -86,7 +86,7 @@ int libp2p_net_multistream_receive(int socket_fd, char** results, size_t* result
* @returns the socket file descriptor of the connection, or -1 on error
*/
int libp2p_net_multistream_connect(const char* hostname, int port) {
int retVal = -1, socket = -1;
int retVal = -1, return_result = -1, socket = -1;
char* results = NULL;
size_t results_size;
size_t num_bytes = 0;
@ -99,14 +99,39 @@ int libp2p_net_multistream_connect(const char* hostname, int port) {
goto exit;
// try to receive the protocol id
retVal = libp2p_net_multistream_receive(socket, &results, &results_size);
return_result = libp2p_net_multistream_receive(socket, &results, &results_size);
if (return_result == 0 || results_size < 1)
goto exit;
if (strstr(results, "multistream") == NULL) {
goto exit;
}
// send the multistream handshake
const char* protocol_buffer = "/multistream/1.0.0\n";
char* protocol_buffer = "/multistream/1.0.0\n";
num_bytes = libp2p_net_multistream_send(socket, (unsigned char*)protocol_buffer, strlen(protocol_buffer));
if (num_bytes <= 0)
goto exit;
// that should be successful, now we are in the loop, and it is waiting for a protocol buffer to use, so send it again
protocol_buffer = "/secio/1.0.0\n";
num_bytes = libp2p_net_multistream_send(socket, (const unsigned char*)protocol_buffer, strlen(protocol_buffer));
if (num_bytes <= 0)
goto exit;
// we should get it back again, handshake should be complete.
free(results);
results = NULL;
return_result = libp2p_net_multistream_receive(socket, &results, &results_size);
if (return_result == 0 || results_size < 1 || (results[0] == 'n' && results[1] == 'a')) {
// it failed, ask for a list
protocol_buffer = "ls";
num_bytes = libp2p_net_multistream_send(socket, (const unsigned char*)protocol_buffer, strlen(protocol_buffer));
if (num_bytes <= 0)
goto exit;
free(results);
results = NULL;
return_result = libp2p_net_multistream_receive(socket, &results, &results_size);
}
retVal = socket;
exit:

44
secio/secio.c
View file

@ -4,7 +4,8 @@
#include "libp2p/secio/secio.h"
#include "libp2p/secio/propose.h"
#include "libp2p/net/p2pnet.h"
//#include "libp2p/net/p2pnet.h"
#include "libp2p/net/multistream.h"
const char* SupportedExchanges = "P-256,P-384,P-521";
const char* SupportedCiphers = "AES-256,AES-128,Blowfish";
@ -49,15 +50,13 @@ int libp2p_secio_generate_nonce(char* results, int length) {
* @returns true(1) on success, false(0) otherwise
*/
int libp2p_secio_handshake(struct SecureSession* session, struct RsaPrivateKey* private_key) {
int retVal = 0, results_size = 65535, bytes_written = 0;
size_t protobuf_size = 0;
int retVal = 0, bytes_written = 0;
size_t protobuf_size = 0, results_size = 0;
unsigned char* protobuf = 0;
unsigned char results[results_size];
unsigned char* results = NULL;
struct Propose* propose_out = NULL;
struct Propose* propose_in = NULL;
struct PublicKey* public_key = NULL;
uint32_t ip;
int socket;
// generate 16 byte nonce
char nonceOut[16];
@ -84,39 +83,16 @@ int libp2p_secio_handshake(struct SecureSession* session, struct RsaPrivateKey*
goto exit;
if (!libp2p_secio_propose_protobuf_encode(propose_out, protobuf, protobuf_size, &protobuf_size))
goto exit;
ip = hostname_to_ip(session->host);
socket = socket_open4();
// connect
if (socket_connect4(socket, ip, session->port) != 0)
goto exit;
// try 1
// first try to send mulitstream line
char buf[21];
buf[0] = 23;
strcpy(&buf[1], "/multistream/1.0.0\n");
bytes_written = socket_write_size(socket, 20, sizeof(uint32_t));
if (bytes_written != 4)
goto exit;
bytes_written = socket_write(socket, buf, 20, 0);
if (bytes_written != 20)
goto exit;
// check to see what was written back...
bytes_written = socket_read(socket, (char*)&results[0], results_size, 0);
if (bytes_written == 65535)
goto exit;
// end of try 1
// connect to host
session->socket_descriptor = libp2p_net_multistream_connect(session->host, session->port);
// send struct Propose in protobuf format
bytes_written = socket_write_size(socket, protobuf_size, sizeof(uint32_t));
if (bytes_written != 4)
goto exit;
bytes_written = socket_write(socket, (char*)protobuf, protobuf_size, 0);
if (bytes_written != protobuf_size)
bytes_written = libp2p_net_multistream_send(session->socket_descriptor, protobuf, protobuf_size);
if (bytes_written <= 0)
goto exit;
// receive response (turn back into a Propose struct)
bytes_written = socket_read(socket, (char*)&results[0], results_size, 0);
bytes_written = libp2p_net_multistream_receive(session->socket_descriptor, (char**)&results, &results_size);
if (bytes_written == 65535)
goto exit;

5
test/test_multistream.h
View file

@ -15,9 +15,8 @@ int test_multistream_connect() {
if (socket_fd < 0)
goto exit;
// try to respond something, perhaps either the protocol id or the ls command
//const unsigned char* out = "/multistream/1.0.0\n";
const unsigned char* out = "ls";
// try to respond something, ls command
const unsigned char* out = "ls\n";
if (libp2p_net_multistream_send(socket_fd, out, strlen((char*)out)) <= 0)
goto exit;