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Last updated: Sat Feb 3 05:00:52 2007

Asterisk developer's documentation :: Codename Pineapple

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pbx_gtkconsole.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2005, Digium, Inc.
 *
 * Mark Spencer <markster@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 *
 * \brief GTK Console monitor -- very kludgy right now
 * 
 */

/*** MODULEINFO
   <depend>gtk</depend>
   <defaultenabled>no</defaultenabled>
 ***/

#include "asterisk.h"

ASTERISK_FILE_VERSION(__FILE__, "$Revision: 43294 $")

#include <sys/types.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <signal.h>
#include <sys/time.h>

#include <gtk/gtk.h>
#include <glib.h>

#include "asterisk/pbx.h"
#include "asterisk/config.h"
#include "asterisk/module.h"
#include "asterisk/logger.h"
#include "asterisk/options.h"
#include "asterisk/cli.h"
#include "asterisk/utils.h"

AST_MUTEX_DEFINE_STATIC(verb_lock);

static pthread_t console_thread;

static int inuse=0;
static int clipipe[2];
static int cleanupid = -1;

static char *dtext = "Asterisk PBX Console (GTK Version)";

static GtkWidget *window;
static GtkWidget *quit;
static GtkWidget *closew;
static GtkWidget *verb;
static GtkWidget *modules;
static GtkWidget *statusbar;
static GtkWidget *cli;

static struct timeval last;

static void update_statusbar(char *msg)
{
   gtk_statusbar_pop(GTK_STATUSBAR(statusbar), 1);
   gtk_statusbar_push(GTK_STATUSBAR(statusbar), 1, msg);
}

static int unload_module(void *mod)
{
   if (inuse) {
      /* Kill off the main thread */
      pthread_cancel(console_thread);
      gdk_threads_enter();
      gtk_widget_destroy(window);
      gdk_threads_leave();
      close(clipipe[0]);
      close(clipipe[1]);
   }
   return 0;
}

static int cleanup(void *useless)
{
   gdk_threads_enter();
   gtk_clist_thaw(GTK_CLIST(verb));
   gtk_widget_queue_resize(verb->parent);
   gtk_clist_moveto(GTK_CLIST(verb), GTK_CLIST(verb)->rows - 1, 0, 0, 0);
   cleanupid = -1;
   gdk_threads_leave();
   return 0;
}


static void __verboser(const char *stuff, int opos, int replacelast, int complete)
{
   char *s2[2];
   struct timeval tv;
   int ms;
   s2[0] = (char *)stuff;
   s2[1] = NULL;
   gtk_clist_freeze(GTK_CLIST(verb));
   if (replacelast) 
      gtk_clist_remove(GTK_CLIST(verb), GTK_CLIST(verb)->rows - 1);
   gtk_clist_append(GTK_CLIST(verb), s2);
   if (!ast_tvzero(last)) {
      gdk_threads_leave();
      gettimeofday(&tv, NULL);
      if (cleanupid > -1)
         gtk_timeout_remove(cleanupid);
      ms = ast_tvdiff_ms(tv, last);
      if (ms < 100) {
         /* We just got a message within 100ms, so just schedule an update
            in the near future */
         cleanupid = gtk_timeout_add(200, cleanup, NULL);
      } else {
         cleanup(&cleanupid);
      }
      last = tv;
   } else {
      gettimeofday(&last, NULL);
   }
}

static void verboser(const char *stuff, int opos, int replacelast, int complete) 
{
   ast_mutex_lock(&verb_lock);
   /* Lock appropriately if we're really being called in verbose mode */
   __verboser(stuff, opos, replacelast, complete);
   ast_mutex_unlock(&verb_lock);
}

static void cliinput(void *data, int source, GdkInputCondition ic)
{
   static char buf[256];
   static int offset = 0;
   int res;
   char *c;
   char *l;
   char n;
   /* Read as much stuff is there */
   res = read(source, buf + offset, sizeof(buf) - 1 - offset);
   if (res > -1)
      buf[res + offset] = '\0';
   /* make sure we've null terminated whatever we have so far */
   c = buf;
   l = buf;
   while(*c) {
      if (*c == '\n') {
         /* Keep the trailing \n */
         c++;
         n = *c;
         *c = '\0';
         __verboser(l, 0, 0, 1);
         *(c - 1) = '\0';
         *c = n;
         l = c;
      } else
      c++;
   }
   if (strlen(l)) {
      /* We have some left over */
      memmove(buf, l, strlen(l) + 1);
      offset = strlen(buf);
   } else {
      offset = 0;
   }

}


static void remove_module(void)
{
   int res;
   char *module;
   char buf[256];
   if (GTK_CLIST(modules)->selection) {
      module= (char *)gtk_clist_get_row_data(GTK_CLIST(modules), (int) GTK_CLIST(modules)->selection->data);
      gdk_threads_leave();
      res = ast_unload_resource(module, 0);
      gdk_threads_enter();
      if (res) {
         snprintf(buf, sizeof(buf), "Module '%s' is in use", module);
         update_statusbar(buf);
      } else {
         snprintf(buf, sizeof(buf), "Module '%s' removed", module);
         update_statusbar(buf);
      }
   }
}
static int reload_module(void *mod)
{
   int res, x;
   char *module;
   char buf[256];
   if (GTK_CLIST(modules)->selection) {
      module= (char *)gtk_clist_get_row_data(GTK_CLIST(modules), (int) GTK_CLIST(modules)->selection->data);
      module = strdup(module);
      if (module) {
         gdk_threads_leave();
         res = ast_unload_resource(module, 0);
         gdk_threads_enter();
         if (res) {
            snprintf(buf, sizeof(buf), "Module '%s' is in use", module);
            update_statusbar(buf);
         } else {
            gdk_threads_leave();
            res = ast_load_resource(module);
            gdk_threads_enter();
            if (res) {
               snprintf(buf, sizeof(buf), "Error reloading module '%s'", module);
            } else {
               snprintf(buf, sizeof(buf), "Module '%s' reloaded", module);
            }
            for (x=0; x < GTK_CLIST(modules)->rows; x++) {
               if (!strcmp((char *)gtk_clist_get_row_data(GTK_CLIST(modules), x), module)) {
                  gtk_clist_select_row(GTK_CLIST(modules), x, -1);
                  break;
               }
            }
            update_statusbar(buf);
            
         }
         free(module);
      }
   }

   return 0;
}

static void file_ok_sel(GtkWidget *w, GtkFileSelection *fs)
{
   char tmp[PATH_MAX];
   char *module = gtk_file_selection_get_filename(fs);
   char buf[256];
   snprintf(tmp, sizeof(tmp), "%s/", ast_config_AST_MODULE_DIR);
   if (!strncmp(module, (char *)tmp, strlen(tmp))) 
      module += strlen(tmp);
   gdk_threads_leave();
   if (ast_load_resource(module)) {
      snprintf(buf, sizeof(buf), "Error loading module '%s'.", module);
      update_statusbar(buf);
   } else {
      snprintf(buf, sizeof(buf), "Module '%s' loaded", module);
      update_statusbar(buf);
   }
   gdk_threads_enter();
   gtk_widget_destroy(GTK_WIDGET(fs));
}

static void add_module(void)
{
   char tmp[PATH_MAX];
   GtkWidget *filew;
   snprintf(tmp, sizeof(tmp), "%s/*.so", ast_config_AST_MODULE_DIR);
   filew = gtk_file_selection_new("Load Module");
   gtk_signal_connect(GTK_OBJECT (GTK_FILE_SELECTION(filew)->ok_button),
               "clicked", GTK_SIGNAL_FUNC(file_ok_sel), filew);
   gtk_signal_connect_object(GTK_OBJECT (GTK_FILE_SELECTION(filew)->cancel_button),
               "clicked", GTK_SIGNAL_FUNC(gtk_widget_destroy), GTK_OBJECT(filew));
   gtk_file_selection_set_filename(GTK_FILE_SELECTION(filew), (char *)tmp);
   gtk_widget_show(filew);
}

static int add_mod(const char *module, const char *description, int usecount, const char *like)
{
   char use[10];
   const char *pass[4];
   int row;
   snprintf(use, sizeof(use), "%d", usecount);
   pass[0] = module;
   pass[1] = description;
   pass[2] = use;
   pass[3] = NULL;
   row = gtk_clist_append(GTK_CLIST(modules), (char **) pass);
   gtk_clist_set_row_data(GTK_CLIST(modules), row, (char *) module);
   return 0;   
}

static int mod_update(void)
{
   char *module= NULL;
   /* Update the mod stuff */
   if (GTK_CLIST(modules)->selection) {
      module= (char *)gtk_clist_get_row_data(GTK_CLIST(modules), (int) GTK_CLIST(modules)->selection->data);
   }
   gtk_clist_freeze(GTK_CLIST(modules));
   gtk_clist_clear(GTK_CLIST(modules));
   ast_update_module_list(add_mod, NULL);
   if (module)
      gtk_clist_select_row(GTK_CLIST(modules), gtk_clist_find_row_from_data(GTK_CLIST(modules), module), -1);
   gtk_clist_thaw(GTK_CLIST(modules));
   return 1;
}

static void exit_now(GtkWidget *widget, gpointer data)
{
   ast_loader_unregister(mod_update);
   gtk_main_quit();
   inuse--;
   ast_update_use_count();
   ast_unregister_verbose(verboser);
   ast_unload_resource("pbx_gtkconsole", 0);
   if (option_verbose > 1)
      ast_verbose(VERBOSE_PREFIX_2 "GTK Console Monitor Exiting\n");
   /* XXX Trying to quit after calling this makes asterisk segfault XXX */
}

static void exit_completely(GtkWidget *widget, gpointer data)
{
#if 0
   /* Clever... */
   ast_cli_command(clipipe[1], "quit");
#else
   kill(getpid(), SIGTERM);
#endif
}

static void exit_nicely(GtkWidget *widget, gpointer data)
{
   fflush(stdout);
   gtk_widget_destroy(window);
}

static void *consolethread(void *data)
{
   gtk_widget_show(window);
   gdk_threads_enter();
   gtk_main();
   gdk_threads_leave();
   return NULL;
}

static int cli_activate(void)
{
   char buf[256] = "";
   strncpy(buf, gtk_entry_get_text(GTK_ENTRY(cli)), sizeof(buf) - 1);
   gtk_entry_set_text(GTK_ENTRY(cli), "");
   if (strlen(buf)) {
      ast_cli_command(clipipe[1], buf);
   }
   return TRUE;
}

static int show_console(void)
{
   GtkWidget *hbox;
   GtkWidget *wbox;
   GtkWidget *notebook;
   GtkWidget *sw;
   GtkWidget *bbox, *hbbox, *add, *removew, *reloadw;
   char *modtitles[3] = { "Module", "Description", "Use Count" };
   window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
   
   statusbar = gtk_statusbar_new();
   gtk_widget_show(statusbar);
   
   gtk_signal_connect(GTK_OBJECT(window), "delete_event",
         GTK_SIGNAL_FUNC (exit_nicely), window);
   gtk_signal_connect(GTK_OBJECT(window), "destroy",
         GTK_SIGNAL_FUNC (exit_now), window);
   gtk_container_set_border_width(GTK_CONTAINER(window), 10);

   quit = gtk_button_new_with_label("Quit Asterisk");
   gtk_signal_connect(GTK_OBJECT(quit), "clicked",
         GTK_SIGNAL_FUNC (exit_completely), window);
   gtk_widget_show(quit);

   closew = gtk_button_new_with_label("Close Window");
   gtk_signal_connect(GTK_OBJECT(closew), "clicked",
         GTK_SIGNAL_FUNC (exit_nicely), window);
   gtk_widget_show(closew);

   notebook = gtk_notebook_new();
   verb = gtk_clist_new(1);
   gtk_clist_columns_autosize(GTK_CLIST(verb));
   sw = gtk_scrolled_window_new(NULL, NULL);
   gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
   gtk_container_add(GTK_CONTAINER(sw), verb);
   gtk_widget_show(verb);
   gtk_widget_show(sw);
   gtk_widget_set_usize(verb, 640, 400);
   gtk_notebook_append_page(GTK_NOTEBOOK(notebook), sw, gtk_label_new("Verbose Status"));

   
   modules = gtk_clist_new_with_titles(3, modtitles);
   gtk_clist_columns_autosize(GTK_CLIST(modules));
   gtk_clist_set_column_auto_resize(GTK_CLIST(modules), 0, TRUE);
   gtk_clist_set_column_auto_resize(GTK_CLIST(modules), 1, TRUE);
   gtk_clist_set_column_auto_resize(GTK_CLIST(modules), 2, TRUE);
   gtk_clist_set_sort_column(GTK_CLIST(modules), 0);
   gtk_clist_set_auto_sort(GTK_CLIST(modules), TRUE);
   gtk_clist_column_titles_passive(GTK_CLIST(modules));
   sw = gtk_scrolled_window_new(NULL, NULL);
   gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
   gtk_container_add(GTK_CONTAINER(sw), modules);
   gtk_clist_set_selection_mode(GTK_CLIST(modules), GTK_SELECTION_BROWSE);
   gtk_widget_show(modules);
   gtk_widget_show(sw);

   add = gtk_button_new_with_label("Load...");
   gtk_widget_show(add);
   removew = gtk_button_new_with_label("Unload");
   gtk_widget_show(removew);
   reloadw = gtk_button_new_with_label("Reload");
   gtk_widget_show(reloadw);
   gtk_signal_connect(GTK_OBJECT(removew), "clicked",
         GTK_SIGNAL_FUNC (remove_module), window);
   gtk_signal_connect(GTK_OBJECT(add), "clicked",
         GTK_SIGNAL_FUNC (add_module), window);
   gtk_signal_connect(GTK_OBJECT(reloadw), "clicked",
         GTK_SIGNAL_FUNC (reload_module), window);
      
   bbox = gtk_vbox_new(FALSE, 5);
   gtk_widget_show(bbox);

   gtk_widget_set_usize(bbox, 100, -1);
   gtk_box_pack_start(GTK_BOX(bbox), add, FALSE, FALSE, 5);
   gtk_box_pack_start(GTK_BOX(bbox), removew, FALSE, FALSE, 5);
   gtk_box_pack_start(GTK_BOX(bbox), reloadw, FALSE, FALSE, 5);

   hbbox = gtk_hbox_new(FALSE, 5);
   gtk_widget_show(hbbox);
   
   gtk_box_pack_start(GTK_BOX(hbbox), sw, TRUE, TRUE, 5);
   gtk_box_pack_start(GTK_BOX(hbbox), bbox, FALSE, FALSE, 5);

   gtk_notebook_append_page(GTK_NOTEBOOK(notebook), hbbox, gtk_label_new("Module Information"));

   gtk_widget_show(notebook);

   wbox = gtk_hbox_new(FALSE, 5);
   gtk_widget_show(wbox);
   gtk_box_pack_end(GTK_BOX(wbox), quit, FALSE, FALSE, 5);
   gtk_box_pack_end(GTK_BOX(wbox), closew, FALSE, FALSE, 5);

   hbox = gtk_vbox_new(FALSE, 0);
   gtk_widget_show(hbox);
   
   /* Command line */
   cli = gtk_entry_new();
   gtk_widget_show(cli);

   gtk_signal_connect(GTK_OBJECT(cli), "activate",
         GTK_SIGNAL_FUNC (cli_activate), NULL);

   gtk_box_pack_start(GTK_BOX(hbox), notebook, TRUE, TRUE, 5);
   gtk_box_pack_start(GTK_BOX(hbox), wbox, FALSE, FALSE, 5);
   gtk_box_pack_start(GTK_BOX(hbox), cli, FALSE, FALSE, 0);
   gtk_box_pack_start(GTK_BOX(hbox), statusbar, FALSE, FALSE, 0);
   gtk_container_add(GTK_CONTAINER(window), hbox);
   gtk_window_set_title(GTK_WINDOW(window), "Asterisk Console");
   gtk_widget_grab_focus(cli);
   ast_pthread_create(&console_thread, NULL, consolethread, NULL);
   /* XXX Okay, seriously fix me! XXX */
   usleep(100000);
   ast_register_verbose(verboser);
   gtk_clist_freeze(GTK_CLIST(verb));
   ast_loader_register(mod_update);
   gtk_clist_thaw(GTK_CLIST(verb));
   gdk_input_add(clipipe[0], GDK_INPUT_READ, cliinput, NULL);
   mod_update();
   update_statusbar("Asterisk Console Ready");
   return 0;
}


static int load_module(void *mod)
{
   if (pipe(clipipe)) {
      ast_log(LOG_WARNING, "Unable to create CLI pipe\n");
      return -1;
   }
   g_thread_init(NULL);
   if (gtk_init_check(NULL, NULL))  {
      if (!show_console()) {
         inuse++;
         ast_update_use_count();
         if (option_verbose > 1)
            ast_verbose( VERBOSE_PREFIX_2 "Launched GTK Console monitor\n");     
      } else
         ast_log(LOG_WARNING, "Unable to start GTK console\n");
   } else {
      if (option_debug)
         ast_log(LOG_DEBUG, "Unable to start GTK console monitor -- ignoring\n");
      else if (option_verbose > 1)
         ast_verbose( VERBOSE_PREFIX_2 "GTK is not available -- skipping monitor\n");
   }
   return 0;
}

static const char *description(void)
{
   return dtext;
}

static const char *key(void)
{
   return ASTERISK_GPL_KEY;
}

STD_MOD(MOD_0, reload_module, NULL, NULL);

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