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using Gee;
using Dino.Entities;
using Qlite;
using Xmpp;
using Xmpp.Xep;
using Xmpp.Xep.ServiceDiscovery;
namespace Dino {
public class EntityInfo : StreamInteractionModule, Object {
public static ModuleIdentity<EntityInfo> IDENTITY = new ModuleIdentity<EntityInfo>("entity_info");
public string id { get { return IDENTITY.id; } }
private StreamInteractor stream_interactor;
private Database db;
private EntityCapabilitiesStorage entity_capabilities_storage;
private HashMap<Jid, string> entity_caps_hashes = new HashMap<Jid, string>(Jid.hash_func, Jid.equals_func);
private HashMap<string, Gee.List<string>> entity_features = new HashMap<string, Gee.List<string>>();
private HashMap<Jid, Gee.List<string>> jid_features = new HashMap<Jid, Gee.List<string>>(Jid.hash_func, Jid.equals_func);
private HashMap<string, Gee.Set<Identity>> entity_identity = new HashMap<string, Gee.Set<Identity>>();
private HashMap<Jid, Gee.Set<Identity>> jid_identity = new HashMap<Jid, Gee.Set<Identity>>(Jid.hash_func, Jid.equals_func);
public static void start(StreamInteractor stream_interactor, Database db) {
EntityInfo m = new EntityInfo(stream_interactor, db);
stream_interactor.add_module(m);
}
private EntityInfo(StreamInteractor stream_interactor, Database db) {
this.stream_interactor = stream_interactor;
this.db = db;
this.entity_capabilities_storage = new EntityCapabilitiesStorage(db);
stream_interactor.account_added.connect(on_account_added);
stream_interactor.stream_negotiated.connect((account, stream) => {
var cache = new CapsCacheImpl(account, this);
stream.get_module(ServiceDiscovery.Module.IDENTITY).cache = cache;
string? hash = EntityCapabilities.get_server_caps_hash(stream);
entity_caps_hashes[account.bare_jid.domain_jid] = hash;
});
stream_interactor.module_manager.initialize_account_modules.connect(initialize_modules);
remove_old_entities();
Timeout.add_seconds(60 * 60, () => { remove_old_entities(); return true; });
}
public async Gee.Set<Identity>? get_identities(Account account, Jid jid) {
if (jid_identity.has_key(jid)) {
return jid_identity[jid];
}
string? hash = entity_caps_hashes[jid];
if (hash != null) {
Gee.Set<Identity>? identities = get_stored_identities(hash);
if (identities != null) return identities;
}
ServiceDiscovery.InfoResult? info_result = yield get_info_result(account, jid, hash);
if (info_result != null) {
return info_result.identities;
}
return null;
}
public async Identity? get_identity(Account account, Jid jid) {
Gee.Set<ServiceDiscovery.Identity>? identities = yield get_identities(account, jid);
if (identities == null) return null;
foreach (var identity in identities) {
if (identity.category == Identity.CATEGORY_CLIENT) {
return identity;
}
}
return null;
}
public async bool has_feature(Account account, Jid jid, string feature) {
if (jid_features.has_key(jid)) {
return jid_features[jid].contains(feature);
}
string? hash = entity_caps_hashes[jid];
if (hash != null) {
Gee.List<string>? features = get_stored_features(hash);
if (features != null) {
return features.contains(feature);
}
}
ServiceDiscovery.InfoResult? info_result = yield get_info_result(account, jid, hash);
if (info_result == null) return false;
return info_result.features.contains(feature);
}
private void on_received_available_presence(Account account, Presence.Stanza presence) {
bool is_gc = stream_interactor.get_module(MucManager.IDENTITY).might_be_groupchat(presence.from.bare_jid, account);
if (is_gc) return;
string? caps_hash = EntityCapabilities.get_caps_hash(presence);
if (caps_hash == null) return;
db.entity.upsert()
.value(db.entity.account_id, account.id, true)
.value(db.entity.jid_id, db.get_jid_id(presence.from), true)
.value(db.entity.resource, presence.from.resourcepart, true)
.value(db.entity.last_seen, (long)(new DateTime.now_local()).to_unix())
.value(db.entity.caps_hash, caps_hash)
.perform();
if (caps_hash != null) {
entity_caps_hashes[presence.from] = caps_hash;
}
}
private void remove_old_entities() {
long timestamp = (long)(new DateTime.now_local().add_days(-14)).to_unix();
db.entity.delete().with(db.entity.last_seen, "<", timestamp).perform();
}
private void store_features(string entity, Gee.List<string> features) {
if (entity_features.has_key(entity)) return;
foreach (string feature in features) {
db.entity_feature.insert()
.value(db.entity_feature.entity, entity)
.value(db.entity_feature.feature, feature)
.perform();
}
entity_features[entity] = features;
}
private void store_identities(string entity, Gee.Set<Identity> identities) {
foreach (Identity identity in identities) {
db.entity_identity.insert()
.value(db.entity_identity.entity, entity)
.value(db.entity_identity.category, identity.category)
.value(db.entity_identity.type, identity.type_)
.value(db.entity_identity.entity_name, identity.name)
.perform();
}
entity_identity[entity] = identities;
}
private Gee.List<string>? get_stored_features(string entity) {
Gee.List<string>? features = entity_features[entity];
if (features != null) {
return features;
}
features = new ArrayList<string>();
foreach (Row row in db.entity_feature.select({db.entity_feature.feature}).with(db.entity_feature.entity, "=", entity)) {
features.add(row[db.entity_feature.feature]);
}
if (features.size == 0) {
return null;
}
entity_features[entity] = features;
return features;
}
private Gee.Set<Identity>? get_stored_identities(string entity) {
Gee.Set<Identity>? identities = entity_identity[entity];
if (identities != null) {
return identities;
}
var qry = db.entity_identity.select().with(db.entity_identity.entity, "=", entity);
foreach (Row row in qry) {
if (identities == null) identities = new HashSet<Identity>(Identity.hash_func, Identity.equals_func);
var identity = new Identity(row[db.entity_identity.category], row[db.entity_identity.type], row[db.entity_identity.entity_name]);
identities.add(identity);
}
if (entity_identity.size == 0) {
return null;
}
entity_identity[entity] = identities;
return identities;
}
private async ServiceDiscovery.InfoResult? get_info_result(Account account, Jid jid, string? hash = null) {
XmppStream? stream = stream_interactor.get_stream(account);
if (stream == null) return null;
ServiceDiscovery.InfoResult? info_result = yield stream.get_module(ServiceDiscovery.Module.IDENTITY).request_info(stream, jid);
if (info_result == null) return null;
if (hash != null && EntityCapabilities.Module.compute_hash_for_info_result(info_result) == hash) {
store_features(hash, info_result.features);
store_identities(hash, info_result.identities);
} else {
jid_features[jid] = info_result.features;
jid_identity[jid] = info_result.identities;
}
return info_result;
}
private void on_account_added(Account account) {
stream_interactor.module_manager.get_module(account, Presence.Module.IDENTITY).received_available.connect((stream, presence) => on_received_available_presence(account, presence));
}
private void initialize_modules(Account account, ArrayList<XmppStreamModule> modules) {
modules.add(new Xep.EntityCapabilities.Module(entity_capabilities_storage));
}
}
public class CapsCacheImpl : CapsCache, Object {
private Account account;
private EntityInfo entity_info;
public CapsCacheImpl(Account account, EntityInfo entity_info) {
this.account = account;
this.entity_info = entity_info;
}
public async bool has_entity_feature(Jid jid, string feature) {
return yield entity_info.has_feature(account, jid, feature);
}
public async Gee.Set<Identity> get_entity_identities(Jid jid) {
return yield entity_info.get_identities(account, jid);
}
}
}
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