Mon Mar 31 07:38:04 2008

Asterisk developer's documentation


pbx_gtkconsole.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2005, Digium, Inc.
00005  *
00006  * Mark Spencer <markster@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  *
00021  * \brief GTK Console monitor -- very kludgy right now
00022  * 
00023  */
00024 
00025 /*** MODULEINFO
00026    <depend>gtk</depend>
00027    <defaultenabled>no</defaultenabled>
00028  ***/
00029 
00030 #include "asterisk.h"
00031 
00032 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
00033 
00034 #include <sys/types.h>
00035 #include <stdlib.h>
00036 #include <fcntl.h>
00037 #include <unistd.h>
00038 #include <stdio.h>
00039 #include <string.h>
00040 #include <stdarg.h>
00041 #include <signal.h>
00042 #include <sys/time.h>
00043 
00044 #include <gtk/gtk.h>
00045 #include <glib.h>
00046 
00047 #include "asterisk/pbx.h"
00048 #include "asterisk/config.h"
00049 #include "asterisk/module.h"
00050 #include "asterisk/logger.h"
00051 #include "asterisk/options.h"
00052 #include "asterisk/cli.h"
00053 #include "asterisk/utils.h"
00054 #include "asterisk/paths.h"
00055 #include "asterisk/term.h"
00056 
00057 AST_MUTEX_DEFINE_STATIC(verb_lock);
00058 
00059 static pthread_t console_thread;
00060 
00061 static int inuse=0;
00062 static int clipipe[2];
00063 static int cleanupid = -1;
00064 
00065 static GtkWidget *window;
00066 static GtkWidget *quit;
00067 static GtkWidget *closew;
00068 static GtkWidget *verb;
00069 static GtkWidget *modules;
00070 static GtkWidget *statusbar;
00071 static GtkWidget *cli;
00072 
00073 static struct timeval last;
00074 
00075 static void update_statusbar(char *msg)
00076 {
00077    gtk_statusbar_pop(GTK_STATUSBAR(statusbar), 1);
00078    gtk_statusbar_push(GTK_STATUSBAR(statusbar), 1, msg);
00079 }
00080 
00081 static int unload_module(void)
00082 {
00083    if (inuse) {
00084       /* Kill off the main thread */
00085       pthread_cancel(console_thread);
00086       gdk_threads_enter();
00087       gtk_widget_destroy(window);
00088       gdk_threads_leave();
00089       close(clipipe[0]);
00090       close(clipipe[1]);
00091    }
00092    return 0;
00093 }
00094 
00095 static int cleanup(void *useless)
00096 {
00097    gdk_threads_enter();
00098    gtk_clist_thaw(GTK_CLIST(verb));
00099    gtk_widget_queue_resize(verb->parent);
00100    gtk_clist_moveto(GTK_CLIST(verb), GTK_CLIST(verb)->rows - 1, 0, 0, 0);
00101    cleanupid = -1;
00102    gdk_threads_leave();
00103    return 0;
00104 }
00105 
00106 
00107 static void __verboser(const char *_stuff)
00108 {
00109    char *s2[2];
00110    struct timeval tv;
00111    int ms;
00112    char *stuff;
00113 
00114    stuff = ast_strdupa(_stuff);
00115    term_strip(stuff, stuff, strlen(stuff) + 1);
00116 
00117    s2[0] = (char *)stuff;
00118    s2[1] = NULL;
00119    gtk_clist_freeze(GTK_CLIST(verb));
00120    gtk_clist_append(GTK_CLIST(verb), s2);
00121    if (!ast_tvzero(last)) {
00122       gdk_threads_leave();
00123       gettimeofday(&tv, NULL);
00124       if (cleanupid > -1)
00125          gtk_timeout_remove(cleanupid);
00126       ms = ast_tvdiff_ms(tv, last);
00127       if (ms < 100) {
00128          /* We just got a message within 100ms, so just schedule an update
00129             in the near future */
00130          cleanupid = gtk_timeout_add(200, cleanup, NULL);
00131       } else {
00132          cleanup(&cleanupid);
00133       }
00134       last = tv;
00135    } else {
00136       gettimeofday(&last, NULL);
00137    }
00138 }
00139 
00140 static void verboser(const char *stuff) 
00141 {
00142    ast_mutex_lock(&verb_lock);
00143    /* Lock appropriately if we're really being called in verbose mode */
00144    __verboser(stuff);
00145    ast_mutex_unlock(&verb_lock);
00146 }
00147 
00148 static void cliinput(void *data, int source, GdkInputCondition ic)
00149 {
00150    static char buf[256];
00151    static int offset = 0;
00152    int res;
00153    char *c;
00154    char *l;
00155    char n;
00156    /* Read as much stuff is there */
00157    res = read(source, buf + offset, sizeof(buf) - 1 - offset);
00158    if (res > -1)
00159       buf[res + offset] = '\0';
00160    /* make sure we've null terminated whatever we have so far */
00161    c = buf;
00162    l = buf;
00163    while(*c) {
00164       if (*c == '\n') {
00165          /* Keep the trailing \n */
00166          c++;
00167          n = *c;
00168          *c = '\0';
00169          __verboser(l);
00170          *(c - 1) = '\0';
00171          *c = n;
00172          l = c;
00173       } else
00174       c++;
00175    }
00176    if (strlen(l)) {
00177       /* We have some left over */
00178       memmove(buf, l, strlen(l) + 1);
00179       offset = strlen(buf);
00180    } else {
00181       offset = 0;
00182    }
00183 
00184 }
00185 
00186 static void remove_module(void)
00187 {
00188    int res;
00189    char *module;
00190    char buf[256];
00191    if (GTK_CLIST(modules)->selection) {
00192       module = (char *) gtk_clist_get_row_data(GTK_CLIST(modules), (long) GTK_CLIST(modules)->selection->data);
00193       gdk_threads_leave();
00194       res = ast_unload_resource(module, 0);
00195       gdk_threads_enter();
00196       if (res) {
00197          snprintf(buf, sizeof(buf), "Module '%s' is in use", module);
00198          update_statusbar(buf);
00199       } else {
00200          snprintf(buf, sizeof(buf), "Module '%s' removed", module);
00201          update_statusbar(buf);
00202       }
00203    }
00204 }
00205 
00206 static int reload(void)
00207 {
00208    int res, x;
00209    char *module;
00210    char buf[256];
00211    if (GTK_CLIST(modules)->selection) {
00212       module= (char *)gtk_clist_get_row_data(GTK_CLIST(modules), (long) GTK_CLIST(modules)->selection->data);
00213       module = strdup(module);
00214       if (module) {
00215          gdk_threads_leave();
00216          res = ast_unload_resource(module, 0);
00217          gdk_threads_enter();
00218          if (res) {
00219             snprintf(buf, sizeof(buf), "Module '%s' is in use", module);
00220             update_statusbar(buf);
00221          } else {
00222             gdk_threads_leave();
00223             res = ast_load_resource(module);
00224             gdk_threads_enter();
00225             if (res) {
00226                snprintf(buf, sizeof(buf), "Error reloading module '%s'", module);
00227             } else {
00228                snprintf(buf, sizeof(buf), "Module '%s' reloaded", module);
00229             }
00230             for (x=0; x < GTK_CLIST(modules)->rows; x++) {
00231                if (!strcmp((char *)gtk_clist_get_row_data(GTK_CLIST(modules), x), module)) {
00232                   gtk_clist_select_row(GTK_CLIST(modules), x, -1);
00233                   break;
00234                }
00235             }
00236             update_statusbar(buf);
00237             
00238          }
00239          free(module);
00240       }
00241    }
00242 
00243    return 0;
00244 }
00245 
00246 static void file_ok_sel(GtkWidget *w, GtkFileSelection *fs)
00247 {
00248    char tmp[PATH_MAX];
00249    char *module = gtk_file_selection_get_filename(fs);
00250    char buf[256];
00251    snprintf(tmp, sizeof(tmp), "%s/", ast_config_AST_MODULE_DIR);
00252    if (!strncmp(module, (char *)tmp, strlen(tmp))) 
00253       module += strlen(tmp);
00254    gdk_threads_leave();
00255    if (ast_load_resource(module)) {
00256       snprintf(buf, sizeof(buf), "Error loading module '%s'.", module);
00257       update_statusbar(buf);
00258    } else {
00259       snprintf(buf, sizeof(buf), "Module '%s' loaded", module);
00260       update_statusbar(buf);
00261    }
00262    gdk_threads_enter();
00263    gtk_widget_destroy(GTK_WIDGET(fs));
00264 }
00265 
00266 static void add_module(void)
00267 {
00268    char tmp[PATH_MAX];
00269    GtkWidget *filew;
00270    snprintf(tmp, sizeof(tmp), "%s/*.so", ast_config_AST_MODULE_DIR);
00271    filew = gtk_file_selection_new("Load Module");
00272    gtk_signal_connect(GTK_OBJECT (GTK_FILE_SELECTION(filew)->ok_button),
00273                "clicked", GTK_SIGNAL_FUNC(file_ok_sel), filew);
00274    gtk_signal_connect_object(GTK_OBJECT (GTK_FILE_SELECTION(filew)->cancel_button),
00275                "clicked", GTK_SIGNAL_FUNC(gtk_widget_destroy), GTK_OBJECT(filew));
00276    gtk_file_selection_set_filename(GTK_FILE_SELECTION(filew), (char *)tmp);
00277    gtk_widget_show(filew);
00278 }
00279 
00280 static int add_mod(const char *module, const char *description, int usecount, const char *like)
00281 {
00282    char use[10];
00283    const char *pass[4];
00284    int row;
00285    snprintf(use, sizeof(use), "%d", usecount);
00286    pass[0] = module;
00287    pass[1] = description;
00288    pass[2] = use;
00289    pass[3] = NULL;
00290    row = gtk_clist_append(GTK_CLIST(modules), (char **) pass);
00291    gtk_clist_set_row_data(GTK_CLIST(modules), row, (char *) module);
00292    return 0;   
00293 }
00294 
00295 static int mod_update(void)
00296 {
00297    char *module= NULL;
00298    /* Update the mod stuff */
00299    if (GTK_CLIST(modules)->selection) {
00300       module= (char *)gtk_clist_get_row_data(GTK_CLIST(modules), (long) GTK_CLIST(modules)->selection->data);
00301    }
00302    gtk_clist_freeze(GTK_CLIST(modules));
00303    gtk_clist_clear(GTK_CLIST(modules));
00304    ast_update_module_list(add_mod, NULL);
00305    if (module)
00306       gtk_clist_select_row(GTK_CLIST(modules), gtk_clist_find_row_from_data(GTK_CLIST(modules), module), -1);
00307    gtk_clist_thaw(GTK_CLIST(modules));
00308    return 1;
00309 }
00310 
00311 static void exit_now(GtkWidget *widget, gpointer data)
00312 {
00313    ast_loader_unregister(mod_update);
00314    gtk_main_quit();
00315    inuse--;
00316    ast_update_use_count();
00317    ast_unregister_verbose(verboser);
00318    ast_unload_resource("pbx_gtkconsole", 0);
00319    if (option_verbose > 1)
00320       ast_verbose(VERBOSE_PREFIX_2 "GTK Console Monitor Exiting\n");
00321    /* XXX Trying to quit after calling this makes asterisk segfault XXX */
00322 }
00323 
00324 static void exit_completely(GtkWidget *widget, gpointer data)
00325 {
00326 #if 0
00327    /* Clever... */
00328    ast_cli_command(clipipe[1], "quit");
00329 #else
00330    kill(getpid(), SIGTERM);
00331 #endif
00332 }
00333 
00334 static void exit_nicely(GtkWidget *widget, gpointer data)
00335 {
00336    fflush(stdout);
00337    gtk_widget_destroy(window);
00338 }
00339 
00340 static void *consolethread(void *data)
00341 {
00342    gtk_widget_show(window);
00343    gdk_threads_enter();
00344    gtk_main();
00345    gdk_threads_leave();
00346    return NULL;
00347 }
00348 
00349 static int cli_activate(void)
00350 {
00351    char buf[256] = "";
00352    strncpy(buf, gtk_entry_get_text(GTK_ENTRY(cli)), sizeof(buf) - 1);
00353    gtk_entry_set_text(GTK_ENTRY(cli), "");
00354    if (strlen(buf)) {
00355       ast_cli_command(clipipe[1], buf);
00356    }
00357    return TRUE;
00358 }
00359 
00360 static int show_console(void)
00361 {
00362    GtkWidget *hbox;
00363    GtkWidget *wbox;
00364    GtkWidget *notebook;
00365    GtkWidget *sw;
00366    GtkWidget *bbox, *hbbox, *add, *removew, *reloadw;
00367    char *modtitles[3] = { "Module", "Description", "Use Count" };
00368    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
00369    
00370    statusbar = gtk_statusbar_new();
00371    gtk_widget_show(statusbar);
00372    
00373    gtk_signal_connect(GTK_OBJECT(window), "delete_event",
00374          GTK_SIGNAL_FUNC (exit_nicely), window);
00375    gtk_signal_connect(GTK_OBJECT(window), "destroy",
00376          GTK_SIGNAL_FUNC (exit_now), window);
00377    gtk_container_set_border_width(GTK_CONTAINER(window), 10);
00378 
00379    quit = gtk_button_new_with_label("Quit Asterisk");
00380    gtk_signal_connect(GTK_OBJECT(quit), "clicked",
00381          GTK_SIGNAL_FUNC (exit_completely), window);
00382    gtk_widget_show(quit);
00383 
00384    closew = gtk_button_new_with_label("Close Window");
00385    gtk_signal_connect(GTK_OBJECT(closew), "clicked",
00386          GTK_SIGNAL_FUNC (exit_nicely), window);
00387    gtk_widget_show(closew);
00388 
00389    notebook = gtk_notebook_new();
00390    verb = gtk_clist_new(1);
00391    gtk_clist_columns_autosize(GTK_CLIST(verb));
00392    sw = gtk_scrolled_window_new(NULL, NULL);
00393    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
00394    gtk_container_add(GTK_CONTAINER(sw), verb);
00395    gtk_widget_show(verb);
00396    gtk_widget_show(sw);
00397    gtk_widget_set_usize(verb, 640, 400);
00398    gtk_notebook_append_page(GTK_NOTEBOOK(notebook), sw, gtk_label_new("Verbose Status"));
00399 
00400    
00401    modules = gtk_clist_new_with_titles(3, modtitles);
00402    gtk_clist_columns_autosize(GTK_CLIST(modules));
00403    gtk_clist_set_column_auto_resize(GTK_CLIST(modules), 0, TRUE);
00404    gtk_clist_set_column_auto_resize(GTK_CLIST(modules), 1, TRUE);
00405    gtk_clist_set_column_auto_resize(GTK_CLIST(modules), 2, TRUE);
00406    gtk_clist_set_sort_column(GTK_CLIST(modules), 0);
00407    gtk_clist_set_auto_sort(GTK_CLIST(modules), TRUE);
00408    gtk_clist_column_titles_passive(GTK_CLIST(modules));
00409    sw = gtk_scrolled_window_new(NULL, NULL);
00410    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
00411    gtk_container_add(GTK_CONTAINER(sw), modules);
00412    gtk_clist_set_selection_mode(GTK_CLIST(modules), GTK_SELECTION_BROWSE);
00413    gtk_widget_show(modules);
00414    gtk_widget_show(sw);
00415 
00416    add = gtk_button_new_with_label("Load...");
00417    gtk_widget_show(add);
00418    removew = gtk_button_new_with_label("Unload");
00419    gtk_widget_show(removew);
00420    reloadw = gtk_button_new_with_label("Reload");
00421    gtk_widget_show(reloadw);
00422    gtk_signal_connect(GTK_OBJECT(removew), "clicked",
00423          GTK_SIGNAL_FUNC (remove_module), window);
00424    gtk_signal_connect(GTK_OBJECT(add), "clicked",
00425          GTK_SIGNAL_FUNC (add_module), window);
00426    gtk_signal_connect(GTK_OBJECT(reloadw), "clicked",
00427          GTK_SIGNAL_FUNC (reload), window);
00428       
00429    bbox = gtk_vbox_new(FALSE, 5);
00430    gtk_widget_show(bbox);
00431 
00432    gtk_widget_set_usize(bbox, 100, -1);
00433    gtk_box_pack_start(GTK_BOX(bbox), add, FALSE, FALSE, 5);
00434    gtk_box_pack_start(GTK_BOX(bbox), removew, FALSE, FALSE, 5);
00435    gtk_box_pack_start(GTK_BOX(bbox), reloadw, FALSE, FALSE, 5);
00436 
00437    hbbox = gtk_hbox_new(FALSE, 5);
00438    gtk_widget_show(hbbox);
00439    
00440    gtk_box_pack_start(GTK_BOX(hbbox), sw, TRUE, TRUE, 5);
00441    gtk_box_pack_start(GTK_BOX(hbbox), bbox, FALSE, FALSE, 5);
00442 
00443    gtk_notebook_append_page(GTK_NOTEBOOK(notebook), hbbox, gtk_label_new("Module Information"));
00444 
00445    gtk_widget_show(notebook);
00446 
00447    wbox = gtk_hbox_new(FALSE, 5);
00448    gtk_widget_show(wbox);
00449    gtk_box_pack_end(GTK_BOX(wbox), quit, FALSE, FALSE, 5);
00450    gtk_box_pack_end(GTK_BOX(wbox), closew, FALSE, FALSE, 5);
00451 
00452    hbox = gtk_vbox_new(FALSE, 0);
00453    gtk_widget_show(hbox);
00454    
00455    /* Command line */
00456    cli = gtk_entry_new();
00457    gtk_widget_show(cli);
00458 
00459    gtk_signal_connect(GTK_OBJECT(cli), "activate",
00460          GTK_SIGNAL_FUNC (cli_activate), NULL);
00461 
00462    gtk_box_pack_start(GTK_BOX(hbox), notebook, TRUE, TRUE, 5);
00463    gtk_box_pack_start(GTK_BOX(hbox), wbox, FALSE, FALSE, 5);
00464    gtk_box_pack_start(GTK_BOX(hbox), cli, FALSE, FALSE, 0);
00465    gtk_box_pack_start(GTK_BOX(hbox), statusbar, FALSE, FALSE, 0);
00466    gtk_container_add(GTK_CONTAINER(window), hbox);
00467    gtk_window_set_title(GTK_WINDOW(window), "Asterisk Console");
00468    gtk_widget_grab_focus(cli);
00469    ast_pthread_create(&console_thread, NULL, consolethread, NULL);
00470    /* XXX Okay, seriously fix me! XXX */
00471    usleep(100000);
00472    ast_register_verbose(verboser);
00473    gtk_clist_freeze(GTK_CLIST(verb));
00474    ast_loader_register(mod_update);
00475    gtk_clist_thaw(GTK_CLIST(verb));
00476    gdk_input_add(clipipe[0], GDK_INPUT_READ, cliinput, NULL);
00477    mod_update();
00478    update_statusbar("Asterisk Console Ready");
00479    return 0;
00480 }
00481 
00482 
00483 static int load_module(void)
00484 {
00485    if (pipe(clipipe)) {
00486       ast_log(LOG_WARNING, "Unable to create CLI pipe\n");
00487       return -1;
00488    }
00489    g_thread_init(NULL);
00490    if (gtk_init_check(NULL, NULL))  {
00491       if (!show_console()) {
00492          inuse++;
00493          ast_update_use_count();
00494          if (option_verbose > 1)
00495             ast_verbose( VERBOSE_PREFIX_2 "Launched GTK Console monitor\n");     
00496       } else
00497          ast_log(LOG_WARNING, "Unable to start GTK console\n");
00498    } else {
00499       if (option_debug)
00500          ast_log(LOG_DEBUG, "Unable to start GTK console monitor -- ignoring\n");
00501       else if (option_verbose > 1)
00502          ast_verbose( VERBOSE_PREFIX_2 "GTK is not available -- skipping monitor\n");
00503    }
00504    return 0;
00505 }
00506 
00507 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "GTK Console",
00508       .load = load_module,
00509       .unload = unload_module,
00510       .reload = reload,
00511           );

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