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claws-mail/src/crash.c
Paul Mangan 2bdb69e51f 2011-02-16 [paul] 3.7.8cvs57 
* src/*
		update copyright headers throughout
2011-02-16 07:16:26 +00:00

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/*
* Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
* Copyright (C) 2002-2011 by the Claws Mail Team
*
* 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/>.
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef CRASH_DIALOG
#include "defs.h"
#include <glib.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <fcntl.h>
#if HAVE_SYS_UTSNAME_H
# include <sys/utsname.h>
#endif
#if defined(__GNU_LIBRARY__)
# include <gnu/libc-version.h>
#endif
#include "main.h"
#include "claws.h"
#include "crash.h"
#include "utils.h"
#include "filesel.h"
#include "version.h"
#include "prefs_common.h"
/*
* NOTE: the crash dialog is called when claws is not
* initialized, so do not assume settings are available.
* for example, loading / creating pixmaps seems not
* to be possible.
*/
/***/
static GtkWidget *crash_dialog_show (const gchar *text,
const gchar *debug_output);
static void crash_create_debugger_file (void);
static void crash_save_crash_log (GtkButton *, const gchar *);
static void crash_create_bug_report (GtkButton *, const gchar *);
static void crash_debug (unsigned long crash_pid,
gchar *exe_image,
GString *debug_output);
static const gchar *get_compiled_in_features (void);
static const gchar *get_lib_version (void);
static const gchar *get_operating_system (void);
static gboolean is_crash_dialog_allowed (void);
static void crash_handler (int sig);
static void crash_cleanup_exit (void);
/***/
static const gchar *DEBUG_SCRIPT = "thread all apply\nbt full\nkill\nq";
/***/
/*!
*\brief install crash handlers
*/
void crash_install_handlers(void)
{
#if CRASH_DIALOG
sigset_t mask;
if (!is_crash_dialog_allowed()) return;
sigemptyset(&mask);
#ifdef SIGSEGV
signal(SIGSEGV, crash_handler);
sigaddset(&mask, SIGSEGV);
#endif
#ifdef SIGFPE
signal(SIGFPE, crash_handler);
sigaddset(&mask, SIGFPE);
#endif
#ifdef SIGILL
signal(SIGILL, crash_handler);
sigaddset(&mask, SIGILL);
#endif
#ifdef SIGABRT
signal(SIGABRT, crash_handler);
sigaddset(&mask, SIGABRT);
#endif
sigprocmask(SIG_UNBLOCK, &mask, 0);
#endif /* CRASH_DIALOG */
}
/***/
/*!
*\brief crash dialog entry point
*/
void crash_main(const char *arg)
{
#if CRASH_DIALOG
gchar *text;
gchar **tokens;
unsigned long pid;
GString *output;
crash_create_debugger_file();
tokens = g_strsplit(arg, ",", 0);
pid = atol(tokens[0]);
text = g_strdup_printf(_("Claws Mail process (%ld) received signal %ld"),
pid, atol(tokens[1]));
output = g_string_new("");
crash_debug(pid, tokens[2], output);
/*
* try to get the settings
*/
prefs_common_read_config();
crash_dialog_show(text, output->str);
g_string_free(output, TRUE);
g_free(text);
g_strfreev(tokens);
#endif /* CRASH_DIALOG */
}
/*!
*\brief show crash dialog
*
*\param text Description
*\param debug_output Output text by gdb
*
*\return GtkWidget * Dialog widget
*/
static GtkWidget *crash_dialog_show(const gchar *text, const gchar *debug_output)
{
GtkWidget *window1;
GtkWidget *vbox1;
GtkWidget *hbox1;
GtkWidget *label1;
GtkWidget *frame1;
GtkWidget *scrolledwindow1;
GtkWidget *text1;
GtkWidget *hbuttonbox3;
GtkWidget *hbuttonbox4;
GtkWidget *button3;
GtkWidget *button4;
GtkWidget *button5;
gchar *crash_report;
GtkTextBuffer *buffer;
GtkTextIter iter;
window1 = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "crash");
gtk_container_set_border_width(GTK_CONTAINER(window1), 5);
gtk_window_set_title(GTK_WINDOW(window1), _("Claws Mail has crashed"));
gtk_window_set_position(GTK_WINDOW(window1), GTK_WIN_POS_CENTER);
gtk_window_set_modal(GTK_WINDOW(window1), TRUE);
gtk_window_set_default_size(GTK_WINDOW(window1), 460, 272);
vbox1 = gtk_vbox_new(FALSE, 2);
gtk_widget_show(vbox1);
gtk_container_add(GTK_CONTAINER(window1), vbox1);
hbox1 = gtk_hbox_new(FALSE, 4);
gtk_widget_show(hbox1);
gtk_box_pack_start(GTK_BOX(vbox1), hbox1, FALSE, TRUE, 0);
gtk_container_set_border_width(GTK_CONTAINER(hbox1), 4);
label1 = gtk_label_new
(g_strdup_printf(_("%s.\nPlease file a bug report and include the information below."), text));
gtk_widget_show(label1);
gtk_box_pack_start(GTK_BOX(hbox1), label1, TRUE, TRUE, 0);
gtk_misc_set_alignment(GTK_MISC(label1), 7.45058e-09, 0.5);
frame1 = gtk_frame_new(_("Debug log"));
gtk_widget_show(frame1);
gtk_box_pack_start(GTK_BOX(vbox1), frame1, TRUE, TRUE, 0);
scrolledwindow1 = gtk_scrolled_window_new(NULL, NULL);
gtk_widget_show(scrolledwindow1);
gtk_container_add(GTK_CONTAINER(frame1), scrolledwindow1);
gtk_container_set_border_width(GTK_CONTAINER(scrolledwindow1), 3);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwindow1),
GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
text1 = gtk_text_view_new();
gtk_text_view_set_editable(GTK_TEXT_VIEW(text1), FALSE);
gtk_widget_show(text1);
gtk_container_add(GTK_CONTAINER(scrolledwindow1), text1);
crash_report = g_strdup_printf(
"Claws Mail version %s\n"
"GTK+ version %d.%d.%d / GLib %d.%d.%d\n"
"Locale: %s (charset: %s)\n"
"Features:%s\n"
"Operating system: %s\n"
"C Library: %s\n--\n%s",
VERSION,
gtk_major_version, gtk_minor_version, gtk_micro_version,
glib_major_version, glib_minor_version, glib_micro_version,
conv_get_current_locale(), conv_get_locale_charset_str(),
get_compiled_in_features(),
get_operating_system(),
get_lib_version(),
debug_output);
buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text1));
gtk_text_buffer_get_start_iter(buffer, &iter);
gtk_text_buffer_insert(buffer, &iter, crash_report, -1);
hbuttonbox3 = gtk_hbutton_box_new();
gtk_widget_show(hbuttonbox3);
gtk_box_pack_start(GTK_BOX(vbox1), hbuttonbox3, FALSE, FALSE, 0);
hbuttonbox4 = gtk_hbutton_box_new();
gtk_widget_show(hbuttonbox4);
gtk_box_pack_start(GTK_BOX(vbox1), hbuttonbox4, FALSE, FALSE, 0);
button3 = gtk_button_new_with_label(_("Close"));
gtk_widget_show(button3);
gtk_container_add(GTK_CONTAINER(hbuttonbox4), button3);
gtkut_widget_set_can_default(button3, TRUE);
button4 = gtk_button_new_with_label(_("Save..."));
gtk_widget_show(button4);
gtk_container_add(GTK_CONTAINER(hbuttonbox4), button4);
gtkut_widget_set_can_default(button4, TRUE);
button5 = gtk_button_new_with_label(_("Create bug report"));
gtk_widget_show(button5);
gtk_container_add(GTK_CONTAINER(hbuttonbox4), button5);
gtkut_widget_set_can_default(button5, TRUE);
g_signal_connect(G_OBJECT(window1), "delete_event",
G_CALLBACK(gtk_main_quit), NULL);
g_signal_connect(G_OBJECT(button3), "clicked",
G_CALLBACK(gtk_main_quit), NULL);
g_signal_connect(G_OBJECT(button4), "clicked",
G_CALLBACK(crash_save_crash_log), crash_report);
g_signal_connect(G_OBJECT(button5), "clicked",
G_CALLBACK(crash_create_bug_report), NULL);
gtk_widget_show(window1);
gtk_main();
return window1;
}
/*!
*\brief create debugger script file in claws directory.
* all the other options (creating temp files) looked too
* convoluted.
*/
static void crash_create_debugger_file(void)
{
gchar *filespec = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, DEBUGGERRC, NULL);
str_write_to_file(DEBUG_SCRIPT, filespec);
g_free(filespec);
}
/*!
*\brief saves crash log to a file
*/
static void crash_save_crash_log(GtkButton *button, const gchar *text)
{
time_t timer;
struct tm *lt;
char buf[100];
struct tm buft;
gchar *filename;
timer = time(NULL);
lt = localtime_r(&timer, &buft);
strftime(buf, sizeof buf, "claws-crash-log-%Y-%m-%d-%H-%M-%S.txt", lt);
if (NULL != (filename = filesel_select_file_save(_("Save crash information"), buf))
&& *filename)
str_write_to_file(text, filename);
g_free(filename);
}
/*!
*\brief create bug report (goes to Claws Mail bug tracker)
*/
static void crash_create_bug_report(GtkButton *button, const gchar *data)
{
open_uri(BUGZILLA_URI, prefs_common_get_uri_cmd());
}
/*!
*\brief launches debugger and attaches it to crashed claws
*/
static void crash_debug(unsigned long crash_pid,
gchar *exe_image,
GString *debug_output)
{
int choutput[2];
pid_t pid;
pipe(choutput);
if (0 == (pid = fork())) {
char *argp[10];
char **argptr = argp;
gchar *filespec = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, DEBUGGERRC, NULL);
setgid(getgid());
setuid(getuid());
/*
* setup debugger to attach to crashed claws
*/
*argptr++ = "gdb";
*argptr++ = "--nw";
*argptr++ = "--nx";
*argptr++ = "--quiet";
*argptr++ = "--batch";
*argptr++ = "-x";
*argptr++ = filespec;
*argptr++ = exe_image;
*argptr++ = g_strdup_printf("%ld", crash_pid);
*argptr = NULL;
/*
* redirect output to write end of pipe
*/
close(1);
dup(choutput[1]);
close(choutput[0]);
if (-1 == execvp("gdb", argp))
g_print("error execvp\n");
} else {
char buf[100];
int r;
waitpid(pid, NULL, 0);
/*
* make it non blocking
*/
if (-1 == fcntl(choutput[0], F_SETFL, O_NONBLOCK))
g_print("set to non blocking failed\n");
/*
* get the output
*/
do {
r = read(choutput[0], buf, sizeof buf - 1);
if (r > 0) {
buf[r] = 0;
g_string_append(debug_output, buf);
}
} while (r > 0);
close(choutput[0]);
close(choutput[1]);
/*
* kill the process we attached to
*/
kill(crash_pid, SIGCONT);
}
}
/***/
/*!
*\brief features
*/
static const gchar *get_compiled_in_features(void)
{
return g_strdup_printf("%s",
#if USE_THREADS
" gthread"
#endif
#if INET6
" IPv6"
#endif
#if HAVE_ICONV
" iconv"
#endif
#if HAVE_LIBCOMPFACE
" compface"
#endif
#if USE_GNUTLS
" GnuTLS"
#endif
#if USE_LDAP
" LDAP"
#endif
#if USE_JPILOT
" JPilot"
#endif
#if USE_ENCHANT
" GNU/aspell"
#endif
#if HAVE_LIBETPAN
" libetpan"
#endif
#if HAVE_LIBSM
" libSM"
#endif
"");
}
/***/
/*!
*\brief library version
*/
static const gchar *get_lib_version(void)
{
#if defined(__GNU_LIBRARY__)
return g_strdup_printf("GNU libc %s", gnu_get_libc_version());
#else
return g_strdup(_("Unknown"));
#endif
}
/***/
/*!
*\brief operating system
*/
static const gchar *get_operating_system(void)
{
#if HAVE_SYS_UTSNAME_H
struct utsname utsbuf;
uname(&utsbuf);
return g_strdup_printf("%s %s (%s)",
utsbuf.sysname,
utsbuf.release,
utsbuf.machine);
#else
return g_strdup(_("Unknown"));
#endif
}
/***/
/*!
*\brief see if the crash dialog is allowed (because some
* developers may prefer to run claws-mail under gdb...)
*/
static gboolean is_crash_dialog_allowed(void)
{
return !getenv("CLAWS_NO_CRASH");
}
/*!
*\brief this handler will probably evolve into
* something better.
*/
static void crash_handler(int sig)
{
pid_t pid;
static volatile unsigned long crashed_ = 0;
/*
* let's hope argv0 aren't trashed.
* both are defined in main.c.
*/
extern gchar *argv0;
/*
* besides guarding entrancy it's probably also better
* to mask off signals
*/
if (crashed_) return;
crashed_++;
#ifdef SIGTERM
if (sig == SIGTERM)
clean_quit(NULL);
#endif
/*
* gnome ungrabs focus, and flushes gdk. mmmh, good idea.
*/
gdk_pointer_ungrab(GDK_CURRENT_TIME);
gdk_keyboard_ungrab(GDK_CURRENT_TIME);
gdk_flush();
if (0 == (pid = fork())) {
char buf[50];
char *args[5];
/*
* probably also some other parameters (like GTK+ ones).
* also we pass the full startup dir and the real command
* line typed in (argv0)
*/
args[0] = argv0;
args[1] = "--debug";
args[2] = "--crash";
sprintf(buf, "%d,%d,%s", getppid(), sig, argv0);
args[3] = buf;
args[4] = NULL;
chdir(claws_get_startup_dir());
setgid(getgid());
setuid(getuid());
execvp(argv0, args);
} else {
waitpid(pid, NULL, 0);
crash_cleanup_exit();
_exit(253);
}
_exit(253);
}
/*!
*\brief put all the things here we can do before
* letting the program die
*/
static void crash_cleanup_exit(void)
{
const char *filename = claws_get_socket_name();
claws_unlink(filename);
}
#endif
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