pidgin/pidgin

certificate: Use SHA256 fingerprints instead of SHA1
release-2.x.y
2017-03-06, dx
b3d0ba7c75f6
certificate: Use SHA256 fingerprints instead of SHA1

This meant adding a get_fingerprint_sha256 function to the certificate scheme
structs, which meant adding a struct_size member because we ran out of reserved
members there.

The API-facing purple_certificate_get_fingerprint_sha256() has a fallback
parameter to use sha1 if the SSL plugin doesn't implement this function
(probably an outdated installation, or a third party SSL plugin). When using
the function for display purposes, the fallback is disabled and it returns
NULL, but when using it to compare certificates it's better to have at least
the SHA1.

In functions like purple_certificate_display_x509(), some slight changes to
translatable strings would have been required. Since we're in a string freeze
right now, I avoided those by concatenating a language-neutral "SHA256: %s" at
the end of those messages. The SHA1 line used the word "fingerprint" but we
can't reuse that translation. This should be cleaned up after the release.
/**
* @file gntdebug.c GNT Debug API
* @ingroup finch
*/
/* finch
*
* Finch is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include <internal.h>
#include <gnt.h>
#include <gntbox.h>
#include <gntbutton.h>
#include <gntcheckbox.h>
#include <gntentry.h>
#include <gntfilesel.h>
#include <gntlabel.h>
#include <gntline.h>
#include <gnttextview.h>
#include "gntdebug.h"
#include "finch.h"
#include "notify.h"
#include "util.h"
#include <stdio.h>
#include <string.h>
#define PREF_ROOT "/finch/debug"
static gboolean
handle_fprintf_stderr_cb(GIOChannel *source, GIOCondition cond, gpointer null)
{
gssize size;
char message[1024];
size = read(g_io_channel_unix_get_fd(source), message, sizeof(message) - 1);
if (size <= 0) {
/* Something bad probably happened elsewhere ... let's ignore */
} else {
message[size] = '\0';
g_log("stderr", G_LOG_LEVEL_WARNING, "%s", message);
}
return TRUE;
}
static void
handle_fprintf_stderr(gboolean stop)
{
GIOChannel *stderrch;
static int readhandle = -1;
int pipes[2];
if (stop) {
if (readhandle >= 0) {
g_source_remove(readhandle);
readhandle = -1;
}
return;
}
if (pipe(pipes)) {
readhandle = -1;
return;
};
dup2(pipes[1], STDERR_FILENO);
stderrch = g_io_channel_unix_new(pipes[0]);
g_io_channel_set_close_on_unref(stderrch, TRUE);
readhandle = g_io_add_watch_full(stderrch, G_PRIORITY_HIGH,
G_IO_IN | G_IO_ERR | G_IO_PRI,
handle_fprintf_stderr_cb, NULL, NULL);
g_io_channel_unref(stderrch);
}
static struct
{
GntWidget *window;
GntWidget *tview;
GntWidget *search;
gboolean paused;
} debug;
static gboolean
match_string(const char *category, const char *args)
{
const char *str = gnt_entry_get_text(GNT_ENTRY(debug.search));
if (!str || !*str)
return TRUE;
if (g_strrstr(category, str) != NULL)
return TRUE;
if (g_strrstr(args, str) != NULL)
return TRUE;
return FALSE;
}
static void
finch_debug_print(PurpleDebugLevel level, const char *category,
const char *args)
{
if (debug.window && !debug.paused && match_string(category, args))
{
int pos = gnt_text_view_get_lines_below(GNT_TEXT_VIEW(debug.tview));
GntTextFormatFlags flag = GNT_TEXT_FLAG_NORMAL;
const char *mdate;
time_t mtime = time(NULL);
mdate = purple_utf8_strftime("%H:%M:%S ", localtime(&mtime));
gnt_text_view_append_text_with_flags(GNT_TEXT_VIEW(debug.tview),
mdate, flag);
gnt_text_view_append_text_with_flags(GNT_TEXT_VIEW(debug.tview),
category, GNT_TEXT_FLAG_BOLD);
gnt_text_view_append_text_with_flags(GNT_TEXT_VIEW(debug.tview),
": ", GNT_TEXT_FLAG_BOLD);
switch (level)
{
case PURPLE_DEBUG_WARNING:
flag |= GNT_TEXT_FLAG_UNDERLINE;
/* fall through */
case PURPLE_DEBUG_ERROR:
case PURPLE_DEBUG_FATAL:
flag |= GNT_TEXT_FLAG_BOLD;
break;
default:
break;
}
gnt_text_view_append_text_with_flags(GNT_TEXT_VIEW(debug.tview), args, flag);
if (pos <= 1)
gnt_text_view_scroll(GNT_TEXT_VIEW(debug.tview), 0);
}
}
static gboolean
finch_debug_is_enabled(PurpleDebugLevel level, const char *category)
{
return debug.window && !debug.paused;
}
static PurpleDebugUiOps uiops =
{
finch_debug_print,
finch_debug_is_enabled,
/* padding */
NULL,
NULL,
NULL,
NULL
};
PurpleDebugUiOps *finch_debug_get_ui_ops()
{
return &uiops;
}
static void
reset_debug_win(GntWidget *w, gpointer null)
{
debug.window = debug.tview = debug.search = NULL;
}
static void
clear_debug_win(GntWidget *w, GntTextView *tv)
{
gnt_text_view_clear(tv);
}
static void
print_stderr(const char *string)
{
g_printerr("%s", string);
}
static void
toggle_pause(GntWidget *w, gpointer n)
{
debug.paused = !debug.paused;
}
/* Xerox */
static void
purple_glib_log_handler(const gchar *domain, GLogLevelFlags flags,
const gchar *msg, gpointer user_data)
{
PurpleDebugLevel level;
char *new_msg = NULL;
char *new_domain = NULL;
if ((flags & G_LOG_LEVEL_ERROR) == G_LOG_LEVEL_ERROR)
level = PURPLE_DEBUG_ERROR;
else if ((flags & G_LOG_LEVEL_CRITICAL) == G_LOG_LEVEL_CRITICAL)
level = PURPLE_DEBUG_FATAL;
else if ((flags & G_LOG_LEVEL_WARNING) == G_LOG_LEVEL_WARNING)
level = PURPLE_DEBUG_WARNING;
else if ((flags & G_LOG_LEVEL_MESSAGE) == G_LOG_LEVEL_MESSAGE)
level = PURPLE_DEBUG_INFO;
else if ((flags & G_LOG_LEVEL_INFO) == G_LOG_LEVEL_INFO)
level = PURPLE_DEBUG_INFO;
else if ((flags & G_LOG_LEVEL_DEBUG) == G_LOG_LEVEL_DEBUG)
level = PURPLE_DEBUG_MISC;
else
{
purple_debug_warning("gntdebug",
"Unknown glib logging level in %d\n", flags);
level = PURPLE_DEBUG_MISC; /* This will never happen. */
}
if (msg != NULL)
new_msg = purple_utf8_try_convert(msg);
if (domain != NULL)
new_domain = purple_utf8_try_convert(domain);
if (new_msg != NULL)
{
purple_debug(level, (new_domain != NULL ? new_domain : "g_log"),
"%s\n", new_msg);
g_free(new_msg);
}
g_free(new_domain);
}
static void
size_changed_cb(GntWidget *widget, int oldw, int oldh)
{
int w, h;
gnt_widget_get_size(widget, &w, &h);
purple_prefs_set_int(PREF_ROOT "/size/width", w);
purple_prefs_set_int(PREF_ROOT "/size/height", h);
}
static gboolean
for_real(gpointer entry)
{
purple_prefs_set_string(PREF_ROOT "/filter", gnt_entry_get_text(entry));
return FALSE;
}
static void
update_filter_string(GntEntry *entry, gpointer null)
{
int id = g_timeout_add(1000, for_real, entry);
g_object_set_data_full(G_OBJECT(entry), "update-filter", GINT_TO_POINTER(id),
(GDestroyNotify)g_source_remove);
}
static void
file_save(GntFileSel *fs, const char *path, const char *file, GntTextView *tv)
{
FILE *fp;
if ((fp = g_fopen(path, "w+")) == NULL) {
purple_notify_error(NULL, NULL, _("Unable to open file."), NULL);
return;
}
fprintf(fp, "Finch Debug Log : %s\n", purple_date_format_full(NULL));
fprintf(fp, "%s", tv->string->str);
fclose(fp);
gnt_widget_destroy(GNT_WIDGET(fs));
}
static void
file_cancel(GntWidget *w, GntFileSel *fs)
{
gnt_widget_destroy(GNT_WIDGET(fs));
}
static void
save_debug_win(GntWidget *w, GntTextView *tv)
{
GntWidget *window = gnt_file_sel_new();
GntFileSel *sel = GNT_FILE_SEL(window);
gnt_file_sel_set_current_location(sel, purple_home_dir());
gnt_file_sel_set_suggested_filename(sel, "debug.txt");
g_signal_connect(G_OBJECT(sel), "file_selected", G_CALLBACK(file_save), tv);
g_signal_connect(G_OBJECT(sel->cancel), "activate", G_CALLBACK(file_cancel), sel);
gnt_widget_show(window);
}
void finch_debug_window_show()
{
GntWidget *wid, *box, *label;
debug.paused = FALSE;
if (debug.window) {
gnt_window_present(debug.window);
return;
}
debug.window = gnt_vbox_new(FALSE);
gnt_box_set_toplevel(GNT_BOX(debug.window), TRUE);
gnt_box_set_title(GNT_BOX(debug.window), _("Debug Window"));
gnt_box_set_pad(GNT_BOX(debug.window), 0);
gnt_box_set_alignment(GNT_BOX(debug.window), GNT_ALIGN_MID);
debug.tview = gnt_text_view_new();
gnt_box_add_widget(GNT_BOX(debug.window), debug.tview);
gnt_widget_set_size(debug.tview,
purple_prefs_get_int(PREF_ROOT "/size/width"),
purple_prefs_get_int(PREF_ROOT "/size/height"));
g_signal_connect(G_OBJECT(debug.tview), "size_changed", G_CALLBACK(size_changed_cb), NULL);
gnt_box_add_widget(GNT_BOX(debug.window), gnt_line_new(FALSE));
box = gnt_hbox_new(FALSE);
gnt_box_set_alignment(GNT_BOX(box), GNT_ALIGN_MID);
gnt_box_set_fill(GNT_BOX(box), FALSE);
/* XXX: Setting the GROW_Y for the following widgets don't make sense. But right now
* it's necessary to make the width of the debug window resizable ... like I said,
* it doesn't make sense. The bug is likely in the packing in gntbox.c.
*/
wid = gnt_button_new(_("Clear"));
g_signal_connect(G_OBJECT(wid), "activate", G_CALLBACK(clear_debug_win), debug.tview);
GNT_WIDGET_SET_FLAGS(wid, GNT_WIDGET_GROW_Y);
gnt_box_add_widget(GNT_BOX(box), wid);
wid = gnt_button_new(_("Save"));
g_signal_connect(G_OBJECT(wid), "activate", G_CALLBACK(save_debug_win), debug.tview);
GNT_WIDGET_SET_FLAGS(wid, GNT_WIDGET_GROW_Y);
gnt_box_add_widget(GNT_BOX(box), wid);
debug.search = gnt_entry_new(purple_prefs_get_string(PREF_ROOT "/filter"));
label = gnt_label_new(_("Filter:"));
GNT_WIDGET_UNSET_FLAGS(label, GNT_WIDGET_GROW_X);
gnt_box_add_widget(GNT_BOX(box), label);
gnt_box_add_widget(GNT_BOX(box), debug.search);
g_signal_connect(G_OBJECT(debug.search), "text_changed", G_CALLBACK(update_filter_string), NULL);
wid = gnt_check_box_new(_("Pause"));
g_signal_connect(G_OBJECT(wid), "toggled", G_CALLBACK(toggle_pause), NULL);
GNT_WIDGET_SET_FLAGS(wid, GNT_WIDGET_GROW_Y);
gnt_box_add_widget(GNT_BOX(box), wid);
gnt_box_add_widget(GNT_BOX(debug.window), box);
GNT_WIDGET_SET_FLAGS(box, GNT_WIDGET_GROW_Y);
gnt_widget_set_name(debug.window, "debug-window");
g_signal_connect(G_OBJECT(debug.window), "destroy", G_CALLBACK(reset_debug_win), NULL);
gnt_text_view_attach_scroll_widget(GNT_TEXT_VIEW(debug.tview), debug.window);
gnt_text_view_attach_pager_widget(GNT_TEXT_VIEW(debug.tview), debug.window);
gnt_widget_show(debug.window);
}
static gboolean
start_with_debugwin(gpointer null)
{
finch_debug_window_show();
return FALSE;
}
void finch_debug_init()
{
/* Xerox */
#define REGISTER_G_LOG_HANDLER(name) \
g_log_set_handler((name), G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL \
| G_LOG_FLAG_RECURSION, \
purple_glib_log_handler, NULL)
/* Register the glib log handlers. */
REGISTER_G_LOG_HANDLER(NULL);
REGISTER_G_LOG_HANDLER("GLib");
REGISTER_G_LOG_HANDLER("GModule");
REGISTER_G_LOG_HANDLER("GLib-GObject");
REGISTER_G_LOG_HANDLER("GThread");
REGISTER_G_LOG_HANDLER("Gnt");
#ifdef USE_GSTREAMER
REGISTER_G_LOG_HANDLER("GStreamer");
#endif
REGISTER_G_LOG_HANDLER("stderr");
g_set_print_handler(print_stderr); /* Redirect the debug messages to stderr */
if (!purple_debug_is_enabled())
handle_fprintf_stderr(FALSE);
purple_prefs_add_none(PREF_ROOT);
purple_prefs_add_string(PREF_ROOT "/filter", "");
purple_prefs_add_none(PREF_ROOT "/size");
purple_prefs_add_int(PREF_ROOT "/size/width", 60);
purple_prefs_add_int(PREF_ROOT "/size/height", 15);
if (purple_debug_is_enabled())
g_timeout_add(0, start_with_debugwin, NULL);
}
void finch_debug_uninit()
{
handle_fprintf_stderr(TRUE);
}