aboutsummaryrefslogtreecommitdiff
path: root/libdino/src/service/entity_info.vala
blob: b80d4b5991d0133d20a22f2ce671e2837f431618 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
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);
    }
}
}