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Trying to send unicast sas request

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This commit is contained in:
Jeremy Lakeman 2012-09-07 13:04:40 +09:30
parent 6b64f0cded
commit 2b530bb02a
4 changed files with 18 additions and 15 deletions
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19
keyring.c
View File

@ -1318,7 +1318,7 @@ unsigned char *keyring_find_sas_public(keyring_file *k,unsigned char *sid)
RETURN(sid_sas_mappings[i].sas_public);
}
/* Don't flood the network with mapping requests */
if (sid_sas_mappings[i].last_request_time_in_ms != -1 && now < sid_sas_mappings[i].last_request_time_in_ms + 1000) {
if (sid_sas_mappings[i].last_request_time_in_ms != -1 && now < sid_sas_mappings[i].last_request_time_in_ms + 100) {
INFO("Too soon to ask for SAS mapping again");
RETURN(NULL);
}
@ -1343,25 +1343,24 @@ unsigned char *keyring_find_sas_public(keyring_file *k,unsigned char *sid)
sid_sas_mappings[i].validP=0;
sid_sas_mappings[i].last_request_time_in_ms = now;
if (!my_subscriber)
RETURN(WHYNULL("couldn't request SAS (I don't know who I am)"));
// always send our sid in full, it's likely this is a new peer
if (my_subscriber)
my_subscriber->send_full = 1;
/* request mapping (send request auth-crypted). */
overlay_mdp_frame mdp;
memset(&mdp,0,sizeof(overlay_mdp_frame));
mdp.packetTypeAndFlags=MDP_TX;
bcopy(&sid[0],&mdp.out.dst.sid[0],SID_SIZE);
bcopy(sid,mdp.out.dst.sid,SID_SIZE);
mdp.out.dst.port=MDP_PORT_KEYMAPREQUEST;
mdp.out.src.port=MDP_PORT_KEYMAPREQUEST;
if (k->contexts[0]->identity_count&&
k->contexts[0]->identities[0]->keypair_count&&
k->contexts[0]->identities[0]->keypairs[0]->type
==KEYTYPE_CRYPTOBOX)
bcopy(keyring->contexts[0]->identities[0]->keypairs[0]->public_key,
mdp.out.src.sid,SID_SIZE);
else { RETURN(WHYNULL("couldn't request SAS (I don't know who I am)")); }
bcopy(my_subscriber->sid,mdp.out.src.sid,SID_SIZE);
mdp.out.payload_length=1;
mdp.out.payload[0]=KEYTYPE_CRYPTOSIGN;
if (overlay_mdp_dispatch(&mdp, 0 /* system generated */, NULL, 0))
RETURN(WHYNULL("Failed to send SAS resolution request"));
if (debug & DEBUG_KEYRING)

3
overlay_address.c
View File

@ -198,6 +198,9 @@ int reachable_unicast(struct subscriber *subscriber, overlay_interface *interfac
// may be used in tests
DEBUGF("ADD DIRECT ROUTE TO %s via %s", alloca_tohex_sid(subscriber->sid), inet_ntoa(addr));
/* Pre-emptively check if we have their sas in memory, or send a request */
keyring_find_sas_public(keyring, subscriber->sid);
return 0;
}

1
overlay_interface.c
View File

@ -711,6 +711,7 @@ overlay_broadcast_ensemble(int interface_number,
}
else
{
DEBUGF("Sending overlay frame on %s to %s",interface->name,inet_ntoa(recipientaddr->sin_addr));
if(sendto(interface->alarm.poll.fd,
bytes, len, 0, (struct sockaddr *)recipientaddr, sizeof(struct sockaddr_in)) != len){
WHY_perror("sendto(c)");

8
overlay_olsr.c
View File

@ -151,8 +151,8 @@ static void parse_frame(struct overlay_buffer *buff){
frame.modifiers=ob_get(buff);
dump("received headers", buff->bytes, buff->position);
dump("received payload", buff->bytes+buff->position, buff->sizeLimit - buff->position);
// dump("received headers", buff->bytes, buff->position);
// dump("received payload", buff->bytes+buff->position, buff->sizeLimit - buff->position);
// the remaining bytes are an mdp payload, process it
frame.payload = buff;
@ -240,8 +240,8 @@ int olsr_send(struct overlay_frame *frame){
overlay_broadcast_append(b, &frame->broadcast_id);
ob_append_byte(b, frame->modifiers);
dump("sent headers", b->bytes, b->position);
dump("sent payload", frame->payload->bytes, frame->payload->sizeLimit);
// dump("sent headers", b->bytes, b->position);
// dump("sent payload", frame->payload->bytes, frame->payload->sizeLimit);
// send the packet
int ret = send_packet(b->bytes, b->position, frame->payload->bytes, frame->payload->sizeLimit);