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minor change to peer calls and added debugging info to secio

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This commit is contained in:
John Jones 2017-04-03 11:55:03 -05:00
parent 79a2a894dd
commit 464f9b5c5c
3 changed files with 25 additions and 4 deletions
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4
include/libp2p/peer/peerstore.h
View file

@ -67,7 +67,7 @@ int libp2p_peerstore_add_peer(struct Peerstore* peerstore, struct Libp2pPeer* pe
* @param peer_id_size the size of the binary array
* @returns the PeerEntry struct if found, otherwise NULL
*/
struct PeerEntry* libp2p_peerstore_get_peer_entry(struct Peerstore* peerstore, unsigned char* peer_id, size_t peer_id_size);
struct PeerEntry* libp2p_peerstore_get_peer_entry(struct Peerstore* peerstore, const unsigned char* peer_id, size_t peer_id_size);
/**
* Retrieve a peer from the peerstore based on the peer id
@ -76,4 +76,4 @@ struct PeerEntry* libp2p_peerstore_get_peer_entry(struct Peerstore* peerstore, u
* @param peer_id_size the size of the binary array
* @returns the Libp2pPeer struct if found, otherwise NULL
*/
struct Libp2pPeer* libp2p_peerstore_get_peer(struct Peerstore* peerstore, unsigned char* peer_id, size_t peer_id_size);
struct Libp2pPeer* libp2p_peerstore_get_peer(struct Peerstore* peerstore, const unsigned char* peer_id, size_t peer_id_size);

4
peer/peerstore.c
View file

@ -114,7 +114,7 @@ int libp2p_peerstore_add_peer(struct Peerstore* peerstore, struct Libp2pPeer* pe
* @param peer_id_size the size of the binary array
* @returns the PeerEntry struct if found, otherwise NULL
*/
struct PeerEntry* libp2p_peerstore_get_peer_entry(struct Peerstore* peerstore, unsigned char* peer_id, size_t peer_id_size) {
struct PeerEntry* libp2p_peerstore_get_peer_entry(struct Peerstore* peerstore, const unsigned char* peer_id, size_t peer_id_size) {
struct Libp2pLinkedList* current = peerstore->head_entry;
while(current != NULL) {
struct Libp2pPeer* peer = ((struct PeerEntry*)current->item)->peer;
@ -134,7 +134,7 @@ struct PeerEntry* libp2p_peerstore_get_peer_entry(struct Peerstore* peerstore, u
* @param peer_id_size the size of the binary array
* @returns the Peer struct if found, otherwise NULL
*/
struct Libp2pPeer* libp2p_peerstore_get_peer(struct Peerstore* peerstore, unsigned char* peer_id, size_t peer_id_size) {
struct Libp2pPeer* libp2p_peerstore_get_peer(struct Peerstore* peerstore, const unsigned char* peer_id, size_t peer_id_size) {
struct PeerEntry* entry = libp2p_peerstore_get_peer_entry(peerstore, peer_id, peer_id_size);
if (entry == NULL)
return NULL;

21
secio/secio.c
View file

@ -1,3 +1,4 @@
#define DEBUG_SECIO
#include <stdlib.h>
#include <stdio.h> // for debugging, can remove
#include <string.h>
@ -25,6 +26,12 @@ const char* SupportedExchanges = "P-256,P-384,P-521";
const char* SupportedCiphers = "AES-256,AES-128,Blowfish";
const char* SupportedHashes = "SHA256,SHA512";
void debug_secio(const char* in) {
#ifdef DEBUG_SECIO
fprintf(stderr, "%s\n", in);
#endif
}
/***
* Create a new SecureSession struct
* @returns a pointer to a new SecureSession object
@ -679,6 +686,7 @@ int libp2p_secio_handshake(struct SessionContext* local_session, struct RsaPriva
memcpy(total, protocol, protocol_len);
memcpy(&total[protocol_len], propose_out_bytes, propose_out_size);
debug_secio("Writing protocol");
bytes_written = libp2p_net_multistream_write(local_session, total, protocol_len + propose_out_size);
free(total);
if (bytes_written <= 0)
@ -686,6 +694,7 @@ int libp2p_secio_handshake(struct SessionContext* local_session, struct RsaPriva
if (!remote_requested) {
// we should get back the secio confirmation
debug_secio("Reading protocol response");
bytes_written = libp2p_net_multistream_read(local_session, &results, &results_size);
if (bytes_written < 5 || strstr((char*)results, "secio") == NULL)
goto exit;
@ -741,11 +750,13 @@ int libp2p_secio_handshake(struct SessionContext* local_session, struct RsaPriva
goto exit;
debug_secio("Writing propose_out");
bytes_written = libp2p_secio_unencrypted_write(local_session, propose_out_bytes, propose_out_size);
if (bytes_written < propose_out_size)
goto exit;
// now receive the proposal from the new connection
debug_secio("receiving propose_in");
bytes_written = libp2p_secio_unencrypted_read(local_session, &propose_in_bytes, &propose_in_size);
if (bytes_written <= 0)
goto exit;
@ -819,6 +830,7 @@ int libp2p_secio_handshake(struct SessionContext* local_session, struct RsaPriva
libp2p_secio_exchange_protobuf_encode(exchange_out, exchange_out_protobuf, exchange_out_protobuf_size, &bytes_written);
exchange_out_protobuf_size = bytes_written;
debug_secio("Writing exchange_out");
bytes_written = libp2p_secio_unencrypted_write(local_session, exchange_out_protobuf, exchange_out_protobuf_size);
if (exchange_out_protobuf_size != bytes_written)
goto exit;
@ -827,6 +839,7 @@ int libp2p_secio_handshake(struct SessionContext* local_session, struct RsaPriva
// end of send Exchange packet
// receive Exchange packet
debug_secio("Reading exchagne packet");
bytes_written = libp2p_secio_unencrypted_read(local_session, &results, &results_size);
if (bytes_written == 0)
goto exit;
@ -889,10 +902,12 @@ int libp2p_secio_handshake(struct SessionContext* local_session, struct RsaPriva
libp2p_secio_make_mac_and_cipher(local_session, local_session->remote_stretched_key);
// send expected message (their nonce) to verify encryption works
debug_secio("Sending their nonce");
if (libp2p_secio_encrypted_write(local_session, (unsigned char*)local_session->remote_nonce, 16) <= 0)
goto exit;
// receive our nonce to verify encryption works
debug_secio("Receiving our nonce");
if (libp2p_secio_encrypted_read(local_session, &results, &results_size) <= 0)
goto exit;
@ -910,6 +925,7 @@ int libp2p_secio_handshake(struct SessionContext* local_session, struct RsaPriva
retVal = 1;
debug_secio("Handshake complete");
exit:
if (propose_in_bytes != NULL)
@ -934,5 +950,10 @@ int libp2p_secio_handshake(struct SessionContext* local_session, struct RsaPriva
libp2p_secio_propose_free(propose_out);
libp2p_secio_propose_free(propose_in);
if (retVal == 1) {
debug_secio("Handshake success!");
} else {
debug_secio("Handshake returning false");
}
return retVal;
}