mirror of
https://github.com/irungentoo/toxcore.git
synced 2024-03-22 13:30:51 +08:00
71 lines
2.2 KiB
Markdown
71 lines
2.2 KiB
Markdown
|
Massive public group chats.
|
||
|
|
|
||
|
|
Everyone generates a short term public private key pair right before joining
|
||
|
|
the chat.
|
||
|
|
|
||
|
|
Note that for public group chats it is impossible to protect the chat from
|
||
|
|
being spied on by a very dedicated attacker, encryption is therefor used as a
|
||
|
|
form of spam/access control.
|
||
|
|
|
||
|
|
## Joining the chats
|
||
|
|
|
||
|
|
|
||
|
|
## Protocol
|
||
|
|
|
||
|
|
|
||
|
|
Node format:
|
||
|
|
```
|
||
|
|
[char array (node_id), length=32 bytes][ip (in network byte order), length=4 bytes][port (in network byte order), length=2 bytes][Padding , length=2 bytes]
|
||
|
|
```
|
||
|
|
|
||
|
|
Get nodes (Request):
|
||
|
|
Packet contents:
|
||
|
|
```
|
||
|
|
[char with a value of 48][Bob's (The reciever's) Public key (client_id) (32 bytes))][Alice's (The sender's) Public key (client_id) (32 bytes)][Random nonce (24 bytes)][Encrypted with the nonce and private key of the sender:[char with a value of 48][random 8 byte (ping_id)]
|
||
|
|
```
|
||
|
|
Valid replies: a send_nodes packet
|
||
|
|
|
||
|
|
Send_nodes (response):
|
||
|
|
```
|
||
|
|
[char with a value of 48][Bob's (The reciever's) Public key (client_id) (32 bytes))][Alice's (The sender's) Public key (client_id) (32 bytes)][Random nonce (24 bytes)][Encrypted with the nonce and private key of the sender:[char with a value of 49][random 8 byte (ping_id)][Nodes in node format, length=40 * (number of nodes (maximum of 6 nodes)) bytes]]
|
||
|
|
```
|
||
|
|
|
||
|
|
Broadcast packet:
|
||
|
|
```
|
||
|
|
[char with a value of 48][Bob's (The reciever's) Public key (client_id) (32 bytes))][Alice's (The sender's) Public key (client_id) (32 bytes)][nonce][Encrypted with the nonce and private key of the sender:[char with a value of 50][Data to send to everyone]]
|
||
|
|
```
|
||
|
|
|
||
|
|
|
||
|
|
Data to send to everyone:
|
||
|
|
TODO: signing and spam control + permissions.
|
||
|
|
[client_id of sender][uint32_t message number][char with a value representing id of message][data]
|
||
|
|
|
||
|
|
Note: the message number is increased by 1 for each sent message.
|
||
|
|
|
||
|
|
message ids:
|
||
|
|
0 - ping
|
||
|
|
sent every ~60 seconds by every peer.
|
||
|
|
No data.
|
||
|
|
|
||
|
|
16 - new_peer
|
||
|
|
Tell everyone about a new peer in the chat.
|
||
|
|
[uint8_t public_key[public_key_len]]
|
||
|
|
|
||
|
|
17 - ban_peer
|
||
|
|
Ban a peer
|
||
|
|
[uint8_t public_key[public_key_len]]
|
||
|
|
|
||
|
|
18 - topic change
|
||
|
|
[uint8_t topic[topiclen]]
|
||
|
|
|
||
|
|
48 - name change
|
||
|
|
[uint8_t name[namelen]]
|
||
|
|
|
||
|
|
49 - status change
|
||
|
|
[uint8_t (status id)]
|
||
|
|
|
||
|
|
64 - chat message
|
||
|
|
[uint8_t message[messagelen]]
|
||
|
|
|
||
|
|
65 - action (/me)
|
||
|
|
[uint8_t message[messagelen]]
|