Mon May 14 04:43:00 2007

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 
00055 AST_MUTEX_DEFINE_STATIC(verb_lock);
00056 
00057 static pthread_t console_thread;
00058 
00059 static int inuse=0;
00060 static int clipipe[2];
00061 static int cleanupid = -1;
00062 
00063 static char *dtext = "Asterisk PBX Console (GTK Version)";
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 *mod)
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, int opos, int replacelast, int complete)
00108 {
00109    char *s2[2];
00110    struct timeval tv;
00111    int ms;
00112    s2[0] = (char *)stuff;
00113    s2[1] = NULL;
00114    gtk_clist_freeze(GTK_CLIST(verb));
00115    if (replacelast) 
00116       gtk_clist_remove(GTK_CLIST(verb), GTK_CLIST(verb)->rows - 1);
00117    gtk_clist_append(GTK_CLIST(verb), s2);
00118    if (!ast_tvzero(last)) {
00119       gdk_threads_leave();
00120       gettimeofday(&tv, NULL);
00121       if (cleanupid > -1)
00122          gtk_timeout_remove(cleanupid);
00123       ms = ast_tvdiff_ms(tv, last);
00124       if (ms < 100) {
00125          /* We just got a message within 100ms, so just schedule an update
00126             in the near future */
00127          cleanupid = gtk_timeout_add(200, cleanup, NULL);
00128       } else {
00129          cleanup(&cleanupid);
00130       }
00131       last = tv;
00132    } else {
00133       gettimeofday(&last, NULL);
00134    }
00135 }
00136 
00137 static void verboser(const char *stuff, int opos, int replacelast, int complete) 
00138 {
00139    ast_mutex_lock(&verb_lock);
00140    /* Lock appropriately if we're really being called in verbose mode */
00141    __verboser(stuff, opos, replacelast, complete);
00142    ast_mutex_unlock(&verb_lock);
00143 }
00144 
00145 static void cliinput(void *data, int source, GdkInputCondition ic)
00146 {
00147    static char buf[256];
00148    static int offset = 0;
00149    int res;
00150    char *c;
00151    char *l;
00152    char n;
00153    /* Read as much stuff is there */
00154    res = read(source, buf + offset, sizeof(buf) - 1 - offset);
00155    if (res > -1)
00156       buf[res + offset] = '\0';
00157    /* make sure we've null terminated whatever we have so far */
00158    c = buf;
00159    l = buf;
00160    while(*c) {
00161       if (*c == '\n') {
00162          /* Keep the trailing \n */
00163          c++;
00164          n = *c;
00165          *c = '\0';
00166          __verboser(l, 0, 0, 1);
00167          *(c - 1) = '\0';
00168          *c = n;
00169          l = c;
00170       } else
00171       c++;
00172    }
00173    if (strlen(l)) {
00174       /* We have some left over */
00175       memmove(buf, l, strlen(l) + 1);
00176       offset = strlen(buf);
00177    } else {
00178       offset = 0;
00179    }
00180 
00181 }
00182 
00183 
00184 static void remove_module(void)
00185 {
00186    int res;
00187    char *module;
00188    char buf[256];
00189    if (GTK_CLIST(modules)->selection) {
00190       module= (char *)gtk_clist_get_row_data(GTK_CLIST(modules), (int) GTK_CLIST(modules)->selection->data);
00191       gdk_threads_leave();
00192       res = ast_unload_resource(module, 0);
00193       gdk_threads_enter();
00194       if (res) {
00195          snprintf(buf, sizeof(buf), "Module '%s' is in use", module);
00196          update_statusbar(buf);
00197       } else {
00198          snprintf(buf, sizeof(buf), "Module '%s' removed", module);
00199          update_statusbar(buf);
00200       }
00201    }
00202 }
00203 static int reload_module(void *mod)
00204 {
00205    int res, x;
00206    char *module;
00207    char buf[256];
00208    if (GTK_CLIST(modules)->selection) {
00209       module= (char *)gtk_clist_get_row_data(GTK_CLIST(modules), (int) GTK_CLIST(modules)->selection->data);
00210       module = strdup(module);
00211       if (module) {
00212          gdk_threads_leave();
00213          res = ast_unload_resource(module, 0);
00214          gdk_threads_enter();
00215          if (res) {
00216             snprintf(buf, sizeof(buf), "Module '%s' is in use", module);
00217             update_statusbar(buf);
00218          } else {
00219             gdk_threads_leave();
00220             res = ast_load_resource(module);
00221             gdk_threads_enter();
00222             if (res) {
00223                snprintf(buf, sizeof(buf), "Error reloading module '%s'", module);
00224             } else {
00225                snprintf(buf, sizeof(buf), "Module '%s' reloaded", module);
00226             }
00227             for (x=0; x < GTK_CLIST(modules)->rows; x++) {
00228                if (!strcmp((char *)gtk_clist_get_row_data(GTK_CLIST(modules), x), module)) {
00229                   gtk_clist_select_row(GTK_CLIST(modules), x, -1);
00230                   break;
00231                }
00232             }
00233             update_statusbar(buf);
00234             
00235          }
00236          free(module);
00237       }
00238    }
00239 
00240    return 0;
00241 }
00242 
00243 static void file_ok_sel(GtkWidget *w, GtkFileSelection *fs)
00244 {
00245    char tmp[PATH_MAX];
00246    char *module = gtk_file_selection_get_filename(fs);
00247    char buf[256];
00248    snprintf(tmp, sizeof(tmp), "%s/", ast_config_AST_MODULE_DIR);
00249    if (!strncmp(module, (char *)tmp, strlen(tmp))) 
00250       module += strlen(tmp);
00251    gdk_threads_leave();
00252    if (ast_load_resource(module)) {
00253       snprintf(buf, sizeof(buf), "Error loading module '%s'.", module);
00254       update_statusbar(buf);
00255    } else {
00256       snprintf(buf, sizeof(buf), "Module '%s' loaded", module);
00257       update_statusbar(buf);
00258    }
00259    gdk_threads_enter();
00260    gtk_widget_destroy(GTK_WIDGET(fs));
00261 }
00262 
00263 static void add_module(void)
00264 {
00265    char tmp[PATH_MAX];
00266    GtkWidget *filew;
00267    snprintf(tmp, sizeof(tmp), "%s/*.so", ast_config_AST_MODULE_DIR);
00268    filew = gtk_file_selection_new("Load Module");
00269    gtk_signal_connect(GTK_OBJECT (GTK_FILE_SELECTION(filew)->ok_button),
00270                "clicked", GTK_SIGNAL_FUNC(file_ok_sel), filew);
00271    gtk_signal_connect_object(GTK_OBJECT (GTK_FILE_SELECTION(filew)->cancel_button),
00272                "clicked", GTK_SIGNAL_FUNC(gtk_widget_destroy), GTK_OBJECT(filew));
00273    gtk_file_selection_set_filename(GTK_FILE_SELECTION(filew), (char *)tmp);
00274    gtk_widget_show(filew);
00275 }
00276 
00277 static int add_mod(const char *module, const char *description, int usecount, const char *like)
00278 {
00279    char use[10];
00280    const char *pass[4];
00281    int row;
00282    snprintf(use, sizeof(use), "%d", usecount);
00283    pass[0] = module;
00284    pass[1] = description;
00285    pass[2] = use;
00286    pass[3] = NULL;
00287    row = gtk_clist_append(GTK_CLIST(modules), (char **) pass);
00288    gtk_clist_set_row_data(GTK_CLIST(modules), row, (char *) module);
00289    return 0;   
00290 }
00291 
00292 static int mod_update(void)
00293 {
00294    char *module= NULL;
00295    /* Update the mod stuff */
00296    if (GTK_CLIST(modules)->selection) {
00297       module= (char *)gtk_clist_get_row_data(GTK_CLIST(modules), (int) GTK_CLIST(modules)->selection->data);
00298    }
00299    gtk_clist_freeze(GTK_CLIST(modules));
00300    gtk_clist_clear(GTK_CLIST(modules));
00301    ast_update_module_list(add_mod, NULL);
00302    if (module)
00303       gtk_clist_select_row(GTK_CLIST(modules), gtk_clist_find_row_from_data(GTK_CLIST(modules), module), -1);
00304    gtk_clist_thaw(GTK_CLIST(modules));
00305    return 1;
00306 }
00307 
00308 static void exit_now(GtkWidget *widget, gpointer data)
00309 {
00310    ast_loader_unregister(mod_update);
00311    gtk_main_quit();
00312    inuse--;
00313    ast_update_use_count();
00314    ast_unregister_verbose(verboser);
00315    ast_unload_resource("pbx_gtkconsole", 0);
00316    if (option_verbose > 1)
00317       ast_verbose(VERBOSE_PREFIX_2 "GTK Console Monitor Exiting\n");
00318    /* XXX Trying to quit after calling this makes asterisk segfault XXX */
00319 }
00320 
00321 static void exit_completely(GtkWidget *widget, gpointer data)
00322 {
00323 #if 0
00324    /* Clever... */
00325    ast_cli_command(clipipe[1], "quit");
00326 #else
00327    kill(getpid(), SIGTERM);
00328 #endif
00329 }
00330 
00331 static void exit_nicely(GtkWidget *widget, gpointer data)
00332 {
00333    fflush(stdout);
00334    gtk_widget_destroy(window);
00335 }
00336 
00337 static void *consolethread(void *data)
00338 {
00339    gtk_widget_show(window);
00340    gdk_threads_enter();
00341    gtk_main();
00342    gdk_threads_leave();
00343    return NULL;
00344 }
00345 
00346 static int cli_activate(void)
00347 {
00348    char buf[256] = "";
00349    strncpy(buf, gtk_entry_get_text(GTK_ENTRY(cli)), sizeof(buf) - 1);
00350    gtk_entry_set_text(GTK_ENTRY(cli), "");
00351    if (strlen(buf)) {
00352       ast_cli_command(clipipe[1], buf);
00353    }
00354    return TRUE;
00355 }
00356 
00357 static int show_console(void)
00358 {
00359    GtkWidget *hbox;
00360    GtkWidget *wbox;
00361    GtkWidget *notebook;
00362    GtkWidget *sw;
00363    GtkWidget *bbox, *hbbox, *add, *removew, *reloadw;
00364    char *modtitles[3] = { "Module", "Description", "Use Count" };
00365    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
00366    
00367    statusbar = gtk_statusbar_new();
00368    gtk_widget_show(statusbar);
00369    
00370    gtk_signal_connect(GTK_OBJECT(window), "delete_event",
00371          GTK_SIGNAL_FUNC (exit_nicely), window);
00372    gtk_signal_connect(GTK_OBJECT(window), "destroy",
00373          GTK_SIGNAL_FUNC (exit_now), window);
00374    gtk_container_set_border_width(GTK_CONTAINER(window), 10);
00375 
00376    quit = gtk_button_new_with_label("Quit Asterisk");
00377    gtk_signal_connect(GTK_OBJECT(quit), "clicked",
00378          GTK_SIGNAL_FUNC (exit_completely), window);
00379    gtk_widget_show(quit);
00380 
00381    closew = gtk_button_new_with_label("Close Window");
00382    gtk_signal_connect(GTK_OBJECT(closew), "clicked",
00383          GTK_SIGNAL_FUNC (exit_nicely), window);
00384    gtk_widget_show(closew);
00385 
00386    notebook = gtk_notebook_new();
00387    verb = gtk_clist_new(1);
00388    gtk_clist_columns_autosize(GTK_CLIST(verb));
00389    sw = gtk_scrolled_window_new(NULL, NULL);
00390    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
00391    gtk_container_add(GTK_CONTAINER(sw), verb);
00392    gtk_widget_show(verb);
00393    gtk_widget_show(sw);
00394    gtk_widget_set_usize(verb, 640, 400);
00395    gtk_notebook_append_page(GTK_NOTEBOOK(notebook), sw, gtk_label_new("Verbose Status"));
00396 
00397    
00398    modules = gtk_clist_new_with_titles(3, modtitles);
00399    gtk_clist_columns_autosize(GTK_CLIST(modules));
00400    gtk_clist_set_column_auto_resize(GTK_CLIST(modules), 0, TRUE);
00401    gtk_clist_set_column_auto_resize(GTK_CLIST(modules), 1, TRUE);
00402    gtk_clist_set_column_auto_resize(GTK_CLIST(modules), 2, TRUE);
00403    gtk_clist_set_sort_column(GTK_CLIST(modules), 0);
00404    gtk_clist_set_auto_sort(GTK_CLIST(modules), TRUE);
00405    gtk_clist_column_titles_passive(GTK_CLIST(modules));
00406    sw = gtk_scrolled_window_new(NULL, NULL);
00407    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
00408    gtk_container_add(GTK_CONTAINER(sw), modules);
00409    gtk_clist_set_selection_mode(GTK_CLIST(modules), GTK_SELECTION_BROWSE);
00410    gtk_widget_show(modules);
00411    gtk_widget_show(sw);
00412 
00413    add = gtk_button_new_with_label("Load...");
00414    gtk_widget_show(add);
00415    removew = gtk_button_new_with_label("Unload");
00416    gtk_widget_show(removew);
00417    reloadw = gtk_button_new_with_label("Reload");
00418    gtk_widget_show(reloadw);
00419    gtk_signal_connect(GTK_OBJECT(removew), "clicked",
00420          GTK_SIGNAL_FUNC (remove_module), window);
00421    gtk_signal_connect(GTK_OBJECT(add), "clicked",
00422          GTK_SIGNAL_FUNC (add_module), window);
00423    gtk_signal_connect(GTK_OBJECT(reloadw), "clicked",
00424          GTK_SIGNAL_FUNC (reload_module), window);
00425       
00426    bbox = gtk_vbox_new(FALSE, 5);
00427    gtk_widget_show(bbox);
00428 
00429    gtk_widget_set_usize(bbox, 100, -1);
00430    gtk_box_pack_start(GTK_BOX(bbox), add, FALSE, FALSE, 5);
00431    gtk_box_pack_start(GTK_BOX(bbox), removew, FALSE, FALSE, 5);
00432    gtk_box_pack_start(GTK_BOX(bbox), reloadw, FALSE, FALSE, 5);
00433 
00434    hbbox = gtk_hbox_new(FALSE, 5);
00435    gtk_widget_show(hbbox);
00436    
00437    gtk_box_pack_start(GTK_BOX(hbbox), sw, TRUE, TRUE, 5);
00438    gtk_box_pack_start(GTK_BOX(hbbox), bbox, FALSE, FALSE, 5);
00439 
00440    gtk_notebook_append_page(GTK_NOTEBOOK(notebook), hbbox, gtk_label_new("Module Information"));
00441 
00442    gtk_widget_show(notebook);
00443 
00444    wbox = gtk_hbox_new(FALSE, 5);
00445    gtk_widget_show(wbox);
00446    gtk_box_pack_end(GTK_BOX(wbox), quit, FALSE, FALSE, 5);
00447    gtk_box_pack_end(GTK_BOX(wbox), closew, FALSE, FALSE, 5);
00448 
00449    hbox = gtk_vbox_new(FALSE, 0);
00450    gtk_widget_show(hbox);
00451    
00452    /* Command line */
00453    cli = gtk_entry_new();
00454    gtk_widget_show(cli);
00455 
00456    gtk_signal_connect(GTK_OBJECT(cli), "activate",
00457          GTK_SIGNAL_FUNC (cli_activate), NULL);
00458 
00459    gtk_box_pack_start(GTK_BOX(hbox), notebook, TRUE, TRUE, 5);
00460    gtk_box_pack_start(GTK_BOX(hbox), wbox, FALSE, FALSE, 5);
00461    gtk_box_pack_start(GTK_BOX(hbox), cli, FALSE, FALSE, 0);
00462    gtk_box_pack_start(GTK_BOX(hbox), statusbar, FALSE, FALSE, 0);
00463    gtk_container_add(GTK_CONTAINER(window), hbox);
00464    gtk_window_set_title(GTK_WINDOW(window), "Asterisk Console");
00465    gtk_widget_grab_focus(cli);
00466    ast_pthread_create(&console_thread, NULL, consolethread, NULL);
00467    /* XXX Okay, seriously fix me! XXX */
00468    usleep(100000);
00469    ast_register_verbose(verboser);
00470    gtk_clist_freeze(GTK_CLIST(verb));
00471    ast_loader_register(mod_update);
00472    gtk_clist_thaw(GTK_CLIST(verb));
00473    gdk_input_add(clipipe[0], GDK_INPUT_READ, cliinput, NULL);
00474    mod_update();
00475    update_statusbar("Asterisk Console Ready");
00476    return 0;
00477 }
00478 
00479 
00480 static int load_module(void *mod)
00481 {
00482    if (pipe(clipipe)) {
00483       ast_log(LOG_WARNING, "Unable to create CLI pipe\n");
00484       return -1;
00485    }
00486    g_thread_init(NULL);
00487    if (gtk_init_check(NULL, NULL))  {
00488       if (!show_console()) {
00489          inuse++;
00490          ast_update_use_count();
00491          if (option_verbose > 1)
00492             ast_verbose( VERBOSE_PREFIX_2 "Launched GTK Console monitor\n");     
00493       } else
00494          ast_log(LOG_WARNING, "Unable to start GTK console\n");
00495    } else {
00496       if (option_debug)
00497          ast_log(LOG_DEBUG, "Unable to start GTK console monitor -- ignoring\n");
00498       else if (option_verbose > 1)
00499          ast_verbose( VERBOSE_PREFIX_2 "GTK is not available -- skipping monitor\n");
00500    }
00501    return 0;
00502 }
00503 
00504 static const char *description(void)
00505 {
00506    return dtext;
00507 }
00508 
00509 static const char *key(void)
00510 {
00511    return ASTERISK_GPL_KEY;
00512 }
00513 
00514 STD_MOD(MOD_0, reload_module, NULL, NULL);

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