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/* HexChat
* Copyright (c) 2010-2012 Berke Viktor.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "config.h"
#include <gio/gio.h>
#include "hexchat-plugin.h"
static hexchat_plugin *ph; /* plugin handle */
static char name[] = "Checksum";
static char desc[] = "Calculate checksum for DCC file transfers";
static char version[] = "4.0";
typedef struct {
gboolean send_message;
GString *servername;
GString *channel;
} ChecksumCallbackInfo;
static void
print_sha256_result (ChecksumCallbackInfo *info, const char *checksum, const char *filename, GError *error)
{
// So then we get the next best available channel, since we always want to print at least somewhere, it's fine
hexchat_context *ctx = hexchat_find_context(ph, info->servername->str, info->channel->str);
if (!ctx) {
// before we print a private message to the wrong channel, we exit early
if (info->send_message) {
return;
}
// if the context isn't found the first time, we search in the server
ctx = hexchat_find_context(ph, info->servername->str, NULL);
if (!ctx) {
//the second time we exit early, since printing in another server isn't desireable
return;
}
}
hexchat_set_context(ph, ctx);
if (error) {
hexchat_printf (ph, "Failed to create checksum for %s: %s\n", filename, error->message);
} else if (info->send_message) {
hexchat_commandf (ph, "quote PRIVMSG %s :SHA-256 checksum for %s (remote): %s", hexchat_get_info (ph, "channel"), filename, checksum);
} else {
hexchat_printf (ph, "SHA-256 checksum for %s (local): %s\n", filename, checksum);
}
}
static void
file_sha256_complete (GFile *file, GAsyncResult *result, gpointer user_data)
{
ChecksumCallbackInfo * callback_info = user_data;
GError *error = NULL;
char *sha256 = NULL;
const char *filename = g_task_get_task_data (G_TASK (result));
sha256 = g_task_propagate_pointer (G_TASK (result), &error);
print_sha256_result (callback_info, sha256, filename, error);
g_string_free(callback_info->servername, TRUE);
g_string_free(callback_info->channel, TRUE);
g_free(callback_info);
g_free (sha256);
g_clear_error (&error);
}
static void
thread_sha256_file (GTask *task, GFile *file, gpointer task_data, GCancellable *cancellable)
{
GChecksum *checksum;
GFileInputStream *istream;
guint8 buffer[32768];
GError *error = NULL;
gssize ret;
istream = g_file_read (file, cancellable, &error);
if (error) {
g_task_return_error (task, error);
return;
}
checksum = g_checksum_new (G_CHECKSUM_SHA256);
while ((ret = g_input_stream_read (G_INPUT_STREAM (istream), buffer, sizeof(buffer), cancellable, &error)) > 0)
g_checksum_update (checksum, buffer, ret);
if (error) {
g_checksum_free (checksum);
g_task_return_error (task, error);
return;
}
g_task_return_pointer (task, g_strdup (g_checksum_get_string (checksum)), g_free);
g_checksum_free (checksum);
}
static int
dccrecv_cb (char *word[], void *userdata)
{
GTask *task;
char *filename_fs;
GFile *file;
const char *dcc_completed_dir;
char *filename;
if (hexchat_get_prefs (ph, "dcc_completed_dir", &dcc_completed_dir, NULL) == 1 && dcc_completed_dir[0] != '\0')
filename = g_build_filename (dcc_completed_dir, word[1], NULL);
else
filename = g_strdup (word[2]);
filename_fs = g_filename_from_utf8 (filename, -1, NULL, NULL, NULL);
if (!filename_fs) {
hexchat_printf (ph, "Checksum: Invalid filename (%s)\n", filename);
g_free (filename);
return HEXCHAT_EAT_NONE;
}
ChecksumCallbackInfo *callback_data = g_new (ChecksumCallbackInfo, 1);
const char* servername = hexchat_get_info(ph, "server");
callback_data->servername = !servername ? NULL : g_string_new(servername);
const char *channel = hexchat_get_info(ph, "channel");
callback_data->channel = !channel ? NULL : g_string_new(channel);
callback_data->send_message = FALSE;
file = g_file_new_for_path (filename_fs);
task = g_task_new (file, NULL, (GAsyncReadyCallback) file_sha256_complete, (gpointer)callback_data);
g_task_set_task_data (task, filename, g_free);
g_task_run_in_thread (task, (GTaskThreadFunc) thread_sha256_file);
g_free (filename_fs);
g_object_unref (file);
g_object_unref (task);
return HEXCHAT_EAT_NONE;
}
static int
dccoffer_cb (char *word[], void *userdata)
{
GFile *file;
GTask *task;
char *filename;
ChecksumCallbackInfo *callback_data = g_new (ChecksumCallbackInfo, 1);
const char* servername = hexchat_get_info(ph, "server");
callback_data->servername = !servername ? NULL : g_string_new(servername);
const char *channel = hexchat_get_info(ph, "channel");
callback_data->channel = !channel ? NULL : g_string_new(channel);
callback_data->send_message = TRUE;
filename = g_strdup (word[3]);
file = g_file_new_for_path (filename);
task = g_task_new (file, NULL, (GAsyncReadyCallback) file_sha256_complete, (gpointer)callback_data);
g_task_set_task_data (task, filename, g_free);
g_task_run_in_thread (task, (GTaskThreadFunc) thread_sha256_file);
g_object_unref (file);
g_object_unref (task);
return HEXCHAT_EAT_NONE;
}
int
hexchat_plugin_init (hexchat_plugin *plugin_handle, char **plugin_name, char **plugin_desc, char **plugin_version, char *arg)
{
ph = plugin_handle;
*plugin_name = name;
*plugin_desc = desc;
*plugin_version = version;
hexchat_hook_print (ph, "DCC RECV Complete", HEXCHAT_PRI_NORM, dccrecv_cb, NULL);
hexchat_hook_print (ph, "DCC Offer", HEXCHAT_PRI_NORM, dccoffer_cb, NULL);
hexchat_printf (ph, "%s plugin loaded\n", name);
return 1;
}
int
hexchat_plugin_deinit (void)
{
hexchat_printf (ph, "%s plugin unloaded\n", name);
return 1;
}
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