de.fabianonline.telegram_backup.ApiStorage.java Source code

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Here is the source code for de.fabianonline.telegram_backup.ApiStorage.java

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/* Telegram_Backup
 * Copyright (C) 2016 Fabian Schlenz
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>. */

package de.fabianonline.telegram_backup;

import com.github.badoualy.telegram.api.TelegramApiStorage;
import com.github.badoualy.telegram.mtproto.model.DataCenter;
import com.github.badoualy.telegram.mtproto.auth.AuthKey;
import com.github.badoualy.telegram.mtproto.model.MTSession;

import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

class ApiStorage implements TelegramApiStorage {
    private String prefix = null;
    private boolean do_save = false;
    private AuthKey auth_key = null;
    private DataCenter dc = null;
    private File file_auth_key = null;
    private File file_dc = null;

    public ApiStorage(String prefix) {
        this.setPrefix(prefix);
    }

    public void setPrefix(String prefix) {
        this.prefix = prefix;
        this.do_save = (this.prefix != null);
        if (this.do_save) {
            String base = Config.FILE_BASE + File.separatorChar + this.prefix + File.separatorChar;
            this.file_auth_key = new File(base + Config.FILE_NAME_AUTH_KEY);
            this.file_dc = new File(base + Config.FILE_NAME_DC);
            this._saveAuthKey();
            this._saveDc();
        } else {
            this.file_auth_key = null;
            this.file_dc = null;
        }
    }

    public void saveAuthKey(AuthKey authKey) {
        this.auth_key = authKey;
        this._saveAuthKey();
    }

    private void _saveAuthKey() {
        if (this.do_save && this.auth_key != null) {
            try {
                FileUtils.writeByteArrayToFile(this.file_auth_key, this.auth_key.getKey());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public AuthKey loadAuthKey() {
        if (this.auth_key != null)
            return this.auth_key;
        if (this.file_auth_key != null) {
            try {
                return new AuthKey(FileUtils.readFileToByteArray(this.file_auth_key));
            } catch (IOException e) {
                if (!(e instanceof FileNotFoundException))
                    e.printStackTrace();
            }
        }

        return null;
    }

    public void saveDc(DataCenter dc) {
        this.dc = dc;
        this._saveDc();
    }

    private void _saveDc() {
        if (this.do_save && this.dc != null) {
            try {
                FileUtils.write(this.file_dc, this.dc.toString());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public DataCenter loadDc() {
        if (this.dc != null)
            return this.dc;
        if (this.file_dc != null) {
            try {
                String[] infos = FileUtils.readFileToString(this.file_dc).split(":");
                return new DataCenter(infos[0], Integer.parseInt(infos[1]));
            } catch (IOException e) {
                if (!(e instanceof FileNotFoundException))
                    e.printStackTrace();
            }
        }
        return null;
    }

    public void deleteAuthKey() {
        if (this.do_save) {
            try {
                FileUtils.forceDelete(this.file_auth_key);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public void deleteDc() {
        if (this.do_save) {
            try {
                FileUtils.forceDelete(this.file_dc);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public void saveSession(MTSession session) {
    }

    public MTSession loadSession() {
        return null;
    }
}