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public class CoreConnector {
static Eva.Term match_init_view;
static Eva.Term match_roster_update;
static Eva.Term match_resource_entry;
static Eva.Term match_avatar;
static Eva.Term match_conversation;
static Eva.Term match_conversation_new;
static Eva.Term match_conversation_message;
static construct {
match_init_view = Eva.parse("{global,{init_view,Terms}}");
match_roster_update = Eva.parse("{account,Account,{roster_update,JID,Name,Subscription,Groups,Resources,Avatar}}");
match_resource_entry = Eva.parse("{Name,{resource_entry,Priority,Show,Status}}");
match_avatar = Eva.parse("{avatar,Data}");
match_conversation = Eva.parse("{account,Account,{conversation,JID,Message}}");
match_conversation_new = Eva.parse("new");
match_conversation_message = Eva.parse("{message,From,Type,Body}");
}
Eva.PacketHandler con;
public signal void update_contact(Contact contact);
public signal void new_conversation(string jid);
public signal void chat_message(string jid, string from, string type, string message);
public void start() {
con = new Eva.PacketHandler(new UnixInputStream(3, true), new UnixOutputStream(4, true), 4);
con.received_term.connect(handle_term);
con.start();
}
public void stop() {
con.send(new Eva.Atom("stop"));
}
private static string from_utf8(Eva.Binary bin) {
if(bin.len == 0)
return "";
string ret = ((string)bin.data).ndup(bin.len);
warn_if_fail(ret.validate());
return ret;
}
private void handle_term(Eva.Term term) {
Gee.Map<string, Eva.Term> match;
if((match = term.match(match_init_view)) != null) {
Eva.Cons terms = match["Terms"] as Eva.Cons;
while(terms != null) {
Eva.Tuple tuple = terms.head as Eva.Tuple;
if(tuple != null && tuple.size > 0) {
Eva.Atom key = tuple[0] as Eva.Atom;
/*if(key != null) {
switch(key.value) {
// None yet
}
}*/
}
terms = terms.tail as Eva.Cons;
}
}
else if((match = term.match(match_roster_update)) != null) {
Eva.Binary jid_term = match["JID"] as Eva.Binary;
if(jid_term == null) {
warn_if_reached();
return;
}
string jid = from_utf8(jid_term);
Eva.Binary name_term = match["Name"] as Eva.Binary;
string? name;
if (name_term != null)
name = from_utf8(name_term);
else
name = null;
Contact contact = new Contact(jid, name);
Eva.Atom subscription = match["Subscription"] as Eva.Atom;
if(subscription != null) {
switch(subscription.value) {
case "none":
contact.subscription = Contact.Subscription.NONE;
break;
case "to":
contact.subscription = Contact.Subscription.TO;
break;
case "from":
contact.subscription = Contact.Subscription.FROM;
break;
case "both":
contact.subscription = Contact.Subscription.BOTH;
break;
default:
stderr.printf("Unknown subscription: %s\r\n", subscription.value);
break;
}
}
Eva.Cons groups = match["Groups"] as Eva.Cons;
while(groups != null) {
Eva.Binary group_term = groups.head as Eva.Binary;
if(group_term != null) {
string group = from_utf8(group_term);
contact.add_group(group);
}
groups = groups.tail as Eva.Cons;
}
Eva.Cons resources = match["Resources"] as Eva.Cons;
while(resources != null) {
Gee.Map<string, Eva.Term> r;
if((r = resources.head.match(match_resource_entry)) != null) {
Eva.Binary rname_term = r["Name"] as Eva.Binary;
Eva.Numeric prio_term = r["Priority"] as Eva.Numeric;
Eva.Atom show_term = r["Show"] as Eva.Atom;
Eva.Binary status_term = r["Status"] as Eva.Binary;
if(rname_term != null && prio_term != null && show_term != null) {
string rname = from_utf8(rname_term);
int prio = prio_term.int_value;
Contact.Show show = Contact.Show.UNDEFINED;
switch(show_term.value) {
case "online":
show = Contact.Show.ONLINE;
break;
case "away":
show = Contact.Show.AWAY;
break;
case "chat":
show = Contact.Show.CHAT;
break;
case "dnd":
show = Contact.Show.DND;
break;
case "xa":
show = Contact.Show.XA;
break;
}
string? status = null;
if(status_term != null) {
status = from_utf8(status_term);
if(status == "")
status = null;
}
contact.update_resource(rname, new Contact.Resource(prio, show, status));
}
}
resources = resources.tail as Eva.Cons;
}
Gee.Map<string, Eva.Term> avatar = match["Avatar"].match(match_avatar);
if(avatar != null) {
Eva.Binary avatarData = avatar["Data"] as Eva.Binary;
if(avatarData != null) {
InputStream avatarStream = new MemoryInputStream.from_data(avatarData.data, avatarData.len, null);
try {
contact.avatar = new Gdk.Pixbuf.from_stream_at_scale(avatarStream, 32, 32, true, null);
avatarStream.close(null);
} catch(Error e) {
warn_if_reached();
}
}
}
update_contact(contact);
}
else if((match = term.match(match_conversation)) != null) {
Eva.Binary jid_term = match["JID"] as Eva.Binary;
if(jid_term == null) {
warn_if_reached();
return;
}
string jid = from_utf8(jid_term);
Eva.Term message_term = match["Message"];
if(message_term == null) {
warn_if_reached();
return;
}
Gee.Map<string, Eva.Term> cmatch;
if((cmatch = message_term.match(match_conversation_new)) != null) {
new_conversation(jid);
}
else if((cmatch = message_term.match(match_conversation_message)) != null) {
Eva.Binary from_term = cmatch["From"] as Eva.Binary;
if(from_term == null) {
warn_if_reached();
return;
}
string from = from_utf8(from_term);
Eva.Atom type_term = cmatch["Type"] as Eva.Atom;
if(type_term == null) {
warn_if_reached();
return;
}
string type = type_term.value;
Eva.Binary body_term = cmatch["Body"] as Eva.Binary;
if(body_term == null) {
warn_if_reached();
return;
}
string body = from_utf8(body_term);
chat_message(jid, from, type, body);
}
else {
stdout.printf("Received unhandled term: %s\n", term.to_string());
}
}
else {
stdout.printf("Received unhandled term: %s\n", term.to_string());
}
}
public void start_conversation(string jid) {
char[] jid_utf8 = jid.to_utf8();
con.send(Eva.parse("{account,foo_account,{conversation,~w,new}}", new Eva.Binary(jid_utf8)));
}
public void send_message(string jid, string type, string message) {
char[] jid_utf8 = jid.to_utf8();
char[] message_utf8 = message.to_utf8();
con.send(Eva.parse("{account,foo_account,{conversation,~w,{send_message,~a,~w}}}", new Eva.Binary(jid_utf8), type, new Eva.Binary(message_utf8)));
}
}
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