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using Gee;
using Xmpp;
using Xmpp.Xep;
public class Dino.Plugins.Ice.Module : JingleIceUdp.Module {
public string? stun_ip = null;
public uint stun_port = 0;
public string? turn_ip = null;
public Xep.ExternalServiceDiscovery.Service? turn_service = null;
private weak Nice.Agent? agent;
private HashMap<string, DtlsSrtp.CredentialsCapsule> cerds = new HashMap<string, DtlsSrtp.CredentialsCapsule>();
private Nice.Agent get_agent() {
Nice.Agent? agent = this.agent;
if (agent == null) {
agent = new Nice.Agent(MainContext.@default(), Nice.Compatibility.RFC5245);
if (stun_ip != null) {
agent.stun_server = stun_ip;
agent.stun_server_port = stun_port;
}
agent.ice_tcp = false;
agent.set_software("Dino");
agent.weak_ref(agent_unweak);
this.agent = agent;
debug("STUN server for libnice %s %u", agent.stun_server, agent.stun_server_port);
}
return agent;
}
public override Jingle.TransportParameters create_transport_parameters(XmppStream stream, uint8 components, Jid local_full_jid, Jid peer_full_jid) {
DtlsSrtp.CredentialsCapsule? cred = get_create_credentials(local_full_jid, peer_full_jid);
return new TransportParameters(get_agent(), cred, turn_service, turn_ip, components, local_full_jid, peer_full_jid);
}
public override Jingle.TransportParameters parse_transport_parameters(XmppStream stream, uint8 components, Jid local_full_jid, Jid peer_full_jid, StanzaNode transport) throws Jingle.IqError {
DtlsSrtp.CredentialsCapsule? cred = get_create_credentials(local_full_jid, peer_full_jid);
return new TransportParameters(get_agent(), cred, turn_service, turn_ip, components, local_full_jid, peer_full_jid, transport);
}
private DtlsSrtp.CredentialsCapsule? get_create_credentials(Jid local_full_jid, Jid peer_full_jid) {
string from_to_id = local_full_jid.to_string() + peer_full_jid.to_string();
try {
if (!cerds.has_key(from_to_id)) cerds[from_to_id] = DtlsSrtp.Handler.generate_credentials();
} catch (Error e) {
warning("Error creating dtls credentials: %s", e.message);
}
return cerds[from_to_id];
}
private void agent_unweak() {
this.agent = null;
}
}
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