PGP module: store data in own db, use pgp key as specified in account settings

libdino/src/service/database.vala

@@ -103,16 +103,6 @@ public class Database : Qlite.Database {
         }
     }
 
-    public class PgpTable : Table {
-        public Column<string> jid = new Column.Text("jid") { primary_key = true };
-        public Column<string> key = new Column.Text("key") { not_null = true };
-
-        protected PgpTable(Database db) {
-            base(db, "pgp");
-            init({jid, key});
-        }
-    }
-
     public class EntityFeatureTable : Table {
         public Column<string> entity = new Column.Text("entity");
         public Column<string> feature = new Column.Text("feature");
@@ -129,7 +119,6 @@ public class Database : Qlite.Database {
     public RealJidTable real_jid { get; private set; }
     public ConversationTable conversation { get; private set; }
     public AvatarTable avatar { get; private set; }
-    public PgpTable pgp { get; private set; }
     public EntityFeatureTable entity_feature { get; private set; }
 
     public Database(string fileName) {
@@ -140,9 +129,8 @@ public class Database : Qlite.Database {
         real_jid = new RealJidTable(this);
         conversation = new ConversationTable(this);
         avatar = new AvatarTable(this);
-        pgp = new PgpTable(this);
         entity_feature = new EntityFeatureTable(this);
-        init({ account, jid, message, real_jid, conversation, avatar, pgp, entity_feature });
+        init({ account, jid, message, real_jid, conversation, avatar, entity_feature });
     }
 
     public override void migrate(long oldVersion) {
@@ -420,17 +408,6 @@ public class Database : Qlite.Database {
         return ret;
     }
 
-    public void set_pgp_key(Jid jid, string key) {
-        pgp.insert().or("REPLACE")
-                .value(pgp.jid, jid.to_string())
-                .value(pgp.key, key)
-                .perform();
-    }
-
-    public string? get_pgp_key(Jid jid) {
-        return pgp.select({pgp.key}).with(pgp.jid, "=", jid.to_string())[pgp.key];
-    }
-
     public void add_entity_features(string entity, ArrayList<string> features) {
         foreach (string feature in features) {
             entity_feature.insert()

plugins/gpgme-vala/src/gpgme_helper.vala

@@ -28,12 +28,13 @@ public static string decrypt(string encr) throws GLib.Error {
     return get_string_from_data(dec_data);
 }
 
-public static string sign(string plain, SigMode mode) throws GLib.Error {
+public static string sign(string plain, SigMode mode, Key? key = null) throws GLib.Error {
     initialize();
 
     global_mutex.lock();
     Data plain_data = Data.create_from_memory(plain.data, false);
     Context context = Context.create();
+    if (key != null) context.signers_add(key);
     Data signed_data = context.op_sign(plain_data, mode);
     global_mutex.unlock();
     return get_string_from_data(signed_data);
@@ -76,11 +77,19 @@ public static Gee.List<Key> get_keylist(string? pattern = null, bool secret_only
 }
 
 public static Key? get_public_key(string sig) throws GLib.Error {
+    return get_key(sig, false);
+}
+
+public static Key? get_private_key(string sig) throws GLib.Error {
+    return get_key(sig, true);
+}
+
+private static Key? get_key(string sig, bool priv) throws GLib.Error {
     initialize();
 
     global_mutex.lock();
     Context context = Context.create();
-    Key key = context.get_key(sig, false);
+    Key key = context.get_key(sig, priv);
     global_mutex.unlock();
     return key;
 }

plugins/openpgp/CMakeLists.txt

@@ -31,12 +31,13 @@ vala_precompile(OPENPGP_VALA_C
 SOURCES
     src/account_settings_entry.vala
     src/account_settings_widget.vala
+    src/database.vala
     src/encryption_list_entry.vala
     src/manager.vala
     src/plugin.vala
     src/register_plugin.vala
-    src/xmpp_flag.vala
+    src/stream_flag.vala
-    src/xmpp_module.vala
+    src/stream_module.vala
 CUSTOM_VAPIS
     ${CMAKE_BINARY_DIR}/exports/gpgme.vapi
     ${CMAKE_BINARY_DIR}/exports/xmpp-vala.vapi

plugins/openpgp/data/account_settings_item.ui

@@ -3,11 +3,11 @@
     <template class="DinoPluginsOpenPgpAccountSettingsWidget">
         <property name="visible">True</property>
         <child>
-            <object class="GtkButton" id="pgp_button">
+            <object class="GtkButton" id="button">
                 <property name="relief">none</property>
                 <property name="visible">True</property>
                 <child>
-                    <object class="GtkLabel" id="pgp_label">
+                    <object class="GtkLabel" id="label">
                         <property name="xalign">0</property>
                         <property name="visible">True</property>
                     </object>
@@ -18,7 +18,7 @@
             </packing>
         </child>
         <child>
-            <object class="GtkComboBox" id="pgp_combobox">
+            <object class="GtkComboBox" id="combobox">
                 <property name="hexpand">True</property>
                 <property name="width_request">200</property>
                 <property name="visible">True</property>

plugins/openpgp/src/account_settings_entry.vala

@@ -2,6 +2,12 @@ namespace Dino.Plugins.OpenPgp {
 
 public class AccountSettingsEntry : Plugins.AccountSettingsEntry {
 
+    private Plugin plugin;
+
+    public AccountSettingsEntry(Plugin plugin) {
+        this.plugin = plugin;
+    }
+
     public override string id { get {
         return "pgp_key_picker";
     }}
@@ -11,7 +17,7 @@ public class AccountSettingsEntry : Plugins.AccountSettingsEntry {
     }}
 
     public override Plugins.AccountSettingsWidget get_widget() {
-        return new AccountSettingsWidget();
+        return new AccountSettingsWidget(plugin);
     }
 }
 

plugins/openpgp/src/account_settings_widget.vala

@@ -1,60 +1,96 @@
+using Gtk;
+
 using Dino.Entities;
 
 namespace Dino.Plugins.OpenPgp {
 
 [GtkTemplate (ui = "/org/dino-im/account_settings_item.ui")]
 
-private class AccountSettingsWidget : Gtk.Stack, Plugins.AccountSettingsWidget {
+private class AccountSettingsWidget : Stack, Plugins.AccountSettingsWidget {
-    [GtkChild] private Gtk.Label pgp_label;
+    [GtkChild] private Label label;
-    [GtkChild] private Gtk.Button pgp_button;
+    [GtkChild] private Button button;
-    [GtkChild] private Gtk.ComboBox pgp_combobox;
+    [GtkChild] private ComboBox combobox;
 
+    private Plugin plugin;
+    private Account current_account;
     private Gtk.ListStore list_store = new Gtk.ListStore(2, typeof(string), typeof(string?));
 
-    public AccountSettingsWidget() {
+    public AccountSettingsWidget(Plugin plugin) {
-        Gtk.CellRendererText renderer = new Gtk.CellRendererText();
+        this.plugin = plugin;
+
+        CellRendererText renderer = new CellRendererText();
         renderer.set_padding(0, 0);
-        pgp_combobox.pack_start(renderer, true);
+        combobox.pack_start(renderer, true);
-        pgp_combobox.add_attribute(renderer, "markup", 0);
+        combobox.add_attribute(renderer, "markup", 0);
-        pgp_button.clicked.connect(() => { activated(); this.set_visible_child_name("entry"); pgp_combobox.popup(); });
+
+        button.clicked.connect(on_button_clicked);
+        combobox.changed.connect(key_changed);
     }
 
     public void deactivate() {
         this.set_visible_child_name("label");
     }
 
-    private void key_changed() {
-        Gtk.TreeIter selected;
-        pgp_combobox.get_active_iter(out selected);
-        Value text;
-        list_store.get_value(selected, 0, out text);
-        pgp_label.set_markup((string) text);
-        deactivate();
-    }
-
     public void set_account(Account account) {
-        populate_pgp_combobox(account);
+        this.current_account = account;
+        populate(account);
     }
 
-    private void populate_pgp_combobox(Account account) {
+    private void on_button_clicked() {
-        pgp_combobox.changed.disconnect(key_changed);
+        activated();
+        this.set_visible_child_name("entry");
+        combobox.popup();
+    }
 
-        Gtk.TreeIter iter;
+    private void populate(Account account) {
-        pgp_combobox.set_model(list_store);
+        TreeIter iter;
+        combobox.set_model(list_store);
 
         list_store.clear();
+        try {
+            Gee.List<GPG.Key> keys = GPGHelper.get_keylist(null, true);
+
             list_store.append(out iter);
-        pgp_label.set_markup("Disabled\n<span font='9'>Select key</span>");
             list_store.set(iter, 0, "Disabled\n<span font='9'>Select key</span>", 1, null);
-        Gee.List<GPG.Key> list = GPGHelper.get_keylist(null, true);
+            set_label_active(iter, 0);
-        foreach (GPG.Key key in list) {
+            for (int i = 0; i < keys.size; i++) {
                 list_store.append(out iter);
-            list_store.set(iter, 0, @"<span font='11'>$(Markup.escape_text(key.uids[0].uid))</span>\n<span font='9'>0x$(Markup.escape_text(key.fpr[0:16]))</span>");
+                string text = @"<span font='11'>$(Markup.escape_text(keys[i].uids[0].uid))</span>\n<span font='9'>0x$(Markup.escape_text(keys[i].fpr[0:16]))</span>";
-            list_store.set(iter, 1, key.fpr);
+                list_store.set(iter, 0, text);
+                list_store.set(iter, 1, keys[i].fpr);
+                if (keys[i].fpr == plugin.db.get_account_key(account)) {
+                    set_label_active(iter, i + 1);
+                }
+            }
+        } catch (Error e){
+            list_store.append(out iter);
+            list_store.set(iter, 0, @"Disabled\n<span font='9'>Error: $(Markup.escape_text(e.message))</span>", 1, null);
+        }
     }
 
-        pgp_combobox.set_active(0);
+    private void set_label_active(TreeIter iter, int i = -1) {
-        pgp_combobox.changed.connect(key_changed);
+        Value text;
+        list_store.get_value(iter, 0, out text);
+        label.set_markup((string) text);
+        if (i != -1) combobox.active = i;
+    }
+
+    private void key_changed() {
+        TreeIter selected;
+        bool iter_valid = combobox.get_active_iter(out selected);
+        if (iter_valid) {
+            Value key_value;
+            list_store.get_value(selected, 1, out key_value);
+            string? key_id = key_value as string;
+            if (key_id != null) {
+                if (plugin.modules.has_key(current_account)) {
+                    plugin.modules[current_account].set_private_key_id(key_id);
+                }
+                plugin.db.set_account_key(current_account, key_id);
+            }
+            set_label_active(selected);
+            deactivate();
+        }
     }
 }
 

plugins/openpgp/src/database.vala

@@ -0,0 +1,67 @@
+using Qlite;
+
+using Dino.Entities;
+
+namespace Dino.Plugins.OpenPgp {
+
+public class Database : Qlite.Database {
+    private const int VERSION = 0;
+
+    public class AccountSetting : Table {
+        public Column<int> account_id = new Column.Integer("account_id") { primary_key = true };
+        public Column<string> key = new Column.Text("key") { not_null = true };
+
+        protected AccountSetting(Database db) {
+            base(db, "account_setting");
+            init({account_id, key});
+        }
+    }
+
+    public class ContactKey : Table {
+        public Column<string> jid = new Column.Text("jid") { primary_key = true };
+        public Column<string> key = new Column.Text("key") { not_null = true };
+
+        protected ContactKey(Database db) {
+            base(db, "contact_key");
+            init({jid, key});
+        }
+    }
+
+    public AccountSetting account_setting_table { get; private set; }
+    public ContactKey contact_key_table { get; private set; }
+
+    public Database(string filename) {
+        base(filename, VERSION);
+        this.account_setting_table = new AccountSetting(this);
+        this.contact_key_table = new ContactKey(this);
+        init({account_setting_table, contact_key_table});
+    }
+
+    public void set_contact_key(Jid jid, string key) {
+        contact_key_table.insert().or("REPLACE")
+                .value(contact_key_table.jid, jid.to_string())
+                .value(contact_key_table.key, key)
+                .perform();
+    }
+
+    public string? get_contact_key(Jid jid) {
+        return contact_key_table.select({contact_key_table.key})
+            .with(contact_key_table.jid, "=", jid.bare_jid.to_string())[contact_key_table.key];
+    }
+
+    public void set_account_key(Account account, string key) {
+        account_setting_table.insert().or("REPLACE")
+                .value(account_setting_table.account_id, account.id)
+                .value(account_setting_table.key, key)
+                .perform();
+    }
+
+    public string? get_account_key(Account account) {
+        return account_setting_table.select({account_setting_table.key})
+            .with(account_setting_table.account_id, "=", account.id)[account_setting_table.key];
+    }
+
+    public override void migrate(long oldVersion) { }
+}
+
+}

plugins/openpgp/src/manager.vala

@@ -49,7 +49,7 @@ namespace Dino.Plugins.OpenPgp {
         }
 
         public string? get_key_id(Account account, Jid jid) {
-            return db.get_pgp_key(jid);
+            return db.get_contact_key(jid);
         }
 
         public static Manager? get_instance(StreamInteractor stream_interactor) {
@@ -69,7 +69,7 @@ namespace Dino.Plugins.OpenPgp {
         private void on_jid_key_received(Account account, Jid jid, string key_id) {
             if (!pgp_key_ids.has_key(jid) || pgp_key_ids[jid] != key_id) {
                 if (!MucManager.get_instance(stream_interactor).is_groupchat_occupant(jid, account)) {
-                    db.set_pgp_key(jid.bare_jid, key_id);
+                    db.set_contact_key(jid.bare_jid, key_id);
                 }
             }
             pgp_key_ids[jid] = key_id;

plugins/openpgp/src/plugin.vala

@@ -1,28 +1,36 @@
+using Gee;
+
+using Dino.Entities;
+
 namespace Dino.Plugins.OpenPgp {
 
     public class Plugin : Plugins.RootInterface, Object {
         public Dino.Application app;
         public Database db;
+        public HashMap<Account, Module> modules = new HashMap<Account, Module>(Account.hash_func, Account.equals_func);
 
-        private Module module;
         private EncryptionListEntry list_entry;
         private AccountSettingsEntry settings_entry;
 
         public void registered(Dino.Application app) {
             this.app = app;
-            this.module = new Module();
+            this.db = new Database(Path.build_filename(Application.get_storage_dir(), "pgp.db"));
             this.list_entry = new EncryptionListEntry(app.stream_interaction);
-            this.settings_entry = new AccountSettingsEntry();
+            this.settings_entry = new AccountSettingsEntry(this);
+
             app.plugin_registry.register_encryption_list_entry(list_entry);
             app.plugin_registry.register_account_settings_entry(settings_entry);
-            app.stream_interaction.module_manager.initialize_account_modules.connect((account, list) => {
+            app.stream_interaction.module_manager.initialize_account_modules.connect(on_initialize_account_modules);
-                list.add(new Module());
+
-            });
+            Manager.start(app.stream_interaction, db);
-            Manager.start(app.stream_interaction, app.db);
         }
 
-        public void shutdown() {
+        public void shutdown() { }
-            // Nothing to do
+
+        private void on_initialize_account_modules(Account account, ArrayList<Xmpp.Core.XmppStreamModule> modules) {
+            Module module = new Module(db.get_account_key(account));
+            this.modules[account] = module;
+            modules.add(module);
         }
     }
 

plugins/openpgp/src/stream_module.vala

@@ -14,16 +14,28 @@ namespace Dino.Plugins.OpenPgp {
 
         public signal void received_jid_key_id(XmppStream stream, string jid, string key_id);
 
-        private string? signed_status;
+        private string? signed_status = null;
-        private string? own_key_id;
+        private Key? own_key = null;
 
-        public Module() {
+        public Module(string? own_key_id = null) {
-            signed_status = gpg_sign("");
+            set_private_key_id(own_key_id);
-            if (signed_status != null) own_key_id = gpg_verify(signed_status, "");
+        }
+
+        public void set_private_key_id(string? own_key_id) {
+            if (own_key_id != null) {
+                try {
+                    own_key = GPGHelper.get_private_key(own_key_id);
+                    if (own_key == null) print("PRIV KEY NULL\n");
+                } catch (Error e) { }
+                if (own_key != null) {
+                    signed_status = gpg_sign("", own_key);
+                    get_sign_key(signed_status, "");
+                }
+            }
         }
 
         public bool encrypt(Message.Stanza message, string key_id) {
-            string? enc_body = gpg_encrypt(message.body, new string[] {key_id, own_key_id});
+            string? enc_body = gpg_encrypt(message.body, new string[] {key_id, own_key.fpr});
             if (enc_body != null) {
                 message.stanza.put_node(new StanzaNode.build("x", NS_URI_ENCRYPTED).add_self_xmlns().put_node(new StanzaNode.text(enc_body)));
                 message.body = "[This message is OpenPGP encrypted (see XEP-0027)]";
@@ -65,7 +77,7 @@ namespace Dino.Plugins.OpenPgp {
                 string? sig = x_node.get_string_content();
                 if (sig != null) {
                     string signed_data = presence.status == null ? "" : presence.status;
-                    string? key_id = gpg_verify(sig, signed_data);
+                    string? key_id = get_sign_key(sig, signed_data);
                     if (key_id != null) {
                         Flag.get_flag(stream).set_key_id(presence.from, key_id);
                         received_jid_key_id(stream, presence.from, key_id);
@@ -117,7 +129,7 @@ namespace Dino.Plugins.OpenPgp {
             return decr;
         }
 
-        private static string? gpg_verify(string sig, string signed_text) {
+        private static string? get_sign_key(string sig, string signed_text) {
             string armor = "-----BEGIN PGP MESSAGE-----\n\n" + sig + "\n-----END PGP MESSAGE-----";
             string? sign_key = null;
             try {
@@ -126,10 +138,10 @@ namespace Dino.Plugins.OpenPgp {
             return sign_key;
         }
 
-        private static string? gpg_sign(string str) {
+        private static string? gpg_sign(string str, Key key) {
             string signed;
             try {
-                signed = GPGHelper.sign(str, GPG.SigMode.CLEAR);
+                signed = GPGHelper.sign(str, GPG.SigMode.CLEAR, key);
             } catch (Error e) {
                 return null;
             }