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  • Committer: Tony George
  • Date: 2016-08-13 04:16:47 UTC
  • Revision ID: tony.george.kol@gmail.com-20160813041647-ivf2g6rszt00xco5
Updated project structure

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src/Utility/Bash.vala
 
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/*
 
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 * Bash.vala
 
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 *
 
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 * Copyright 2015 Tony George <teejee2008@gmail.com>
 
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 *
 
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 * This program is free software; you can redistribute it and/or modify
 
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 * it under the terms of the GNU General Public License as published by
 
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 * the Free Software Foundation; either version 2 of the License, or
 
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 * (at your option) any later version.
 
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 *
 
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 * This program is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 * GNU General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU General Public License
 
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 * along with this program; if not, write to the Free Software
 
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 
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 * MA 02110-1301, USA.
 
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 *
 
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 *
 
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 */
 
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using GLib;
 
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using Gtk;
 
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using Gee;
 
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using Json;
 
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using TeeJee.Logging;
 
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using TeeJee.FileSystem;
 
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using TeeJee.JsonHelper;
 
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using TeeJee.ProcessHelper;
 
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using TeeJee.GtkHelper;
 
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using TeeJee.System;
 
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using TeeJee.Misc;
 
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public class Bash : AsyncTask {
 
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        public Pid bash_pid = -1;
 
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        public int status_code = -1;
 
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        private static Gee.HashMap<string, Regex> regex_list;
 
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        public Bash() {
 
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                var temp_dir = TEMP_DIR + "/" + timestamp_for_path();
 
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                log_file = temp_dir + "/log.txt";
 
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                script_file = temp_dir + "/bash.sh";
 
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                working_dir = temp_dir;
 
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                init_regular_expressions();
 
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        }
 
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        private static void init_regular_expressions(){
 
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                if (regex_list != null){
 
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                        return; // already initialized
 
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                }
 
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                regex_list = new Gee.HashMap<string,Regex>();
 
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                try {
 
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                        //Example: status=-1
 
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                        regex_list["status"] = new Regex("""status=([0-9\-]+)""");
 
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                }
 
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                catch (Error e) {
 
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                        log_error (e.message);
 
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                }
 
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        }
 
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        // execution ----------------------------
 
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        public void start_shell() {
 
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                dir_create(working_dir);
 
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                var sh = "bash -c 'pkexec bash'";
 
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                save_bash_script_temp(sh, script_file);
 
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                begin();
 
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                log_debug("Started bash shell");
 
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                if (status == AppStatus.RUNNING){
 
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                        bash_pid = -1;
 
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                        while ((status == AppStatus.RUNNING) && (bash_pid == -1)) {
 
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                                sleep(200);
 
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                                var children = get_process_children(child_pid);
 
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                                if (children.length > 0){
 
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                                        bash_pid = children[0];
 
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                                }
 
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                        }
 
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                        log_debug("script pid: %d".printf(child_pid));  
 
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                        log_debug("bash shell pid: %d".printf(bash_pid));       
 
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                }
 
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        }
 
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        public override void parse_stdout_line(string out_line){
 
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                if ((out_line == null) || (out_line.length == 0)) {
 
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                        return;
 
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                }
 
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                MatchInfo match;
 
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                if (regex_list["status"].match(out_line, 0, out match)) {
 
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                        status_code = int.parse(match.fetch(1));
 
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                }
 
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                stdout.printf(out_line + "\n");
 
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                stdout.flush();
 
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        }
 
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        public override void parse_stderr_line(string err_line){
 
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                stdout.printf(err_line + "\n");
 
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                stdout.flush();
 
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        }
 
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        public int execute(string line){
 
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                status_code = -1;
 
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                write_stdin(line);
 
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                write_stdin("echo status=$?");
 
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                while (status_code == -1){
 
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                        sleep(200);
 
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                        gtk_do_events();
 
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                }
 
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                return status_code;
 
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        }
 
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        protected override void finish_task(){
 
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                log_debug("Bash: finish_task()");
 
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        }
 
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        public int read_status(){
 
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                var status_file = working_dir + "/status";
 
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                var f = File.new_for_path(status_file);
 
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                if (f.query_exists()){
 
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                        var txt = file_read(status_file);
 
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                        return int.parse(txt);
 
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                }
 
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                return -1;
 
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        }
 
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}
 
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