https://github.com/the-djmaze/snappymail/issues/51

dev/App/Abstract.js

@@ -48,14 +48,6 @@ export class AbstractApp {
 		return true;
 	}
 
-	/**
-	 * @param {string} token
-	 */
-	setClientSideToken(token) {
-		rl.hash.set();
-		Settings.set('AuthAccountHash', token);
-	}
-
 	logoutReload(close = false) {
 		const url = logoutLink();
 

dev/Common/Enums.js

@@ -98,10 +98,10 @@ export const Notification = {
 	AccountTwoFactorAuthRequired: 120,
 	AccountTwoFactorAuthError: 121,
 
-//	CurrentPasswordIncorrect: 131,
-//	NewPasswordShort: 132,
-//	NewPasswordWeak: 133,
-//	NewPasswordForbidden: 134,
+	CouldNotSaveNewPassword: 130,
+	CurrentPasswordIncorrect: 131,
+	NewPasswordShort: 132,
+	NewPasswordWeak: 133,
 
 	ContactsSyncError: 140,
 

dev/Remote/User/Fetch.js

@@ -594,6 +594,18 @@ class RemoteUserFetch extends AbstractFetchRemote {
 		};
 	}
 
+	/**
+	 * @param {?Function} fCallback
+	 * @param {string} prevPassword
+	 * @param {string} newPassword
+	 */
+	changePassword(fCallback, prevPassword, newPassword) {
+		this.defaultRequest(fCallback, 'ChangePassword', {
+			'PrevPassword': prevPassword,
+			'NewPassword': newPassword
+		});
+	}
+
 	/**
 	 * @param {?Function} fCallback
 	 * @param {string} sFolderFullNameRaw

dev/Screen/User/Settings.js

@@ -18,6 +18,7 @@ import { TemplatesUserSettings } from 'Settings/User/Templates';
 import { FoldersUserSettings } from 'Settings/User/Folders';
 import { ThemesUserSettings } from 'Settings/User/Themes';
 import { OpenPgpUserSettings } from 'Settings/User/OpenPgp';
+import { ChangePasswordUserSettings } from 'Settings/User/ChangePassword';
 
 import { SystemDropDownSettingsUserView } from 'View/User/Settings/SystemDropDown';
 import { MenuSettingsUserView } from 'View/User/Settings/Menu';
@@ -77,6 +78,15 @@ export class SettingsUserScreen extends AbstractSettingsScreen {
 			);
 		}
 
+		if (Settings.get('ChangePasswordIsAllowed')) {
+			settingsAddViewModel(
+				ChangePasswordUserSettings,
+				'SettingsChangePassword',
+				'GLOBAL/PASSWORD',
+				'change-password'
+			);
+		}
+
 		if (Settings.capa(Capa.Folders)) {
 			settingsAddViewModel(FoldersUserSettings, 'SettingsFolders', 'SETTINGS_LABELS/LABEL_FOLDERS_NAME', 'folders');
 		}

dev/Settings/User/ChangePassword.js

@@ -0,0 +1,90 @@
+import ko from 'ko';
+
+import { StorageResultType, Notification } from 'Common/Enums';
+import { getNotificationFromResponse, i18n } from 'Common/Translator';
+import { Settings } from 'Common/Globals';
+
+import Remote from 'Remote/User/Fetch';
+
+import { decorateKoCommands } from 'Knoin/Knoin';
+
+export class ChangePasswordUserSettings {
+	constructor() {
+		ko.addObservablesTo(this, {
+			changeProcess: false,
+
+			errorDescription: '',
+			passwordMismatch: false,
+			passwordUpdateError: false,
+			passwordUpdateSuccess: false,
+
+			currentPassword: '',
+			currentPasswordError: false,
+			newPassword: '',
+			newPassword2: '',
+		});
+
+		this.currentPassword.subscribe(() => this.resetUpdate(true));
+		this.newPassword.subscribe(() => this.resetUpdate());
+		this.newPassword2.subscribe(() => this.resetUpdate());
+
+		decorateKoCommands(this, {
+			saveNewPasswordCommand: self => !self.changeProcess()
+				&& '' !== self.currentPassword()
+				&& '' !== self.newPassword()
+				&& '' !== self.newPassword2()
+		});
+	}
+
+	saveNewPasswordCommand() {
+		if (this.newPassword() !== this.newPassword2()) {
+			this.passwordMismatch(true);
+			this.errorDescription(i18n('SETTINGS_CHANGE_PASSWORD/ERROR_PASSWORD_MISMATCH'));
+		} else {
+			this.reset(true);
+			Remote.changePassword(this.onChangePasswordResponse.bind(this), this.currentPassword(), this.newPassword());
+		}
+	}
+
+	reset(change) {
+		this.changeProcess(change);
+		this.resetUpdate();
+		this.currentPasswordError(false);
+		this.errorDescription('');
+	}
+
+	resetUpdate(current) {
+		this.passwordUpdateError(false);
+		this.passwordUpdateSuccess(false);
+		current ? this.currentPasswordError(false) : this.passwordMismatch(false);
+	}
+
+	onHide() {
+		this.reset(false);
+		this.currentPassword('');
+		this.newPassword('');
+		this.newPassword2('');
+	}
+
+	onChangePasswordResponse(result, data) {
+		this.reset(false);
+
+		if (StorageResultType.Success === result && data && data.Result) {
+			this.currentPassword('');
+			this.newPassword('');
+			this.newPassword2('');
+
+			this.passwordUpdateSuccess(true);
+
+			rl.hash.set();
+			Settings.set('AuthAccountHash', data.Result);
+		} else {
+			if (data && Notification.CurrentPasswordIncorrect === data.ErrorCode) {
+				this.currentPasswordError(true);
+			}
+
+			this.passwordUpdateError(true);
+			this.errorDescription(getNotificationFromResponse(data, Notification.CouldNotSaveNewPassword));
+		}
+	}
+}