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/*
* transmission-remote-gtk - A GTK RPC client to Transmission
* Copyright (C) 2011 Alan Fitton
* 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 02110-1301 USA.
*/
#define TRG_MAILSLOT_NAME "\\\\.\\mailslot\\TransmissionRemoteGTK" //Name given to the Mailslot
#define MAILSLOT_BUFFER_SIZE 1024*32
#include <windows.h>
#include <glib-object.h>
#include <gtk/gtk.h>
#include <json-glib/json-glib.h>
#include "trg-main-window.h"
#include "win32-mailslot.h"
struct trg_mailslot_recv_args {
TrgMainWindow *win;
gchar **uris;
gboolean present;
};
/* to be queued into the glib main loop with g_idle_add() */
static gboolean mailslot_recv_args(gpointer data)
{
struct trg_mailslot_recv_args *args =
(struct trg_mailslot_recv_args *) data;
if (args->present) {
gtk_window_deiconify(GTK_WINDOW(args->win));
gtk_window_present(GTK_WINDOW(args->win));
}
if (args->uris)
trg_add_from_filename(args->win, args->uris);
g_free(args);
return FALSE;
}
static gpointer mailslot_recv_thread(gpointer data)
{
TrgMainWindow *win = TRG_MAIN_WINDOW(data);
JsonParser *parser;
char szBuffer[MAILSLOT_BUFFER_SIZE];
HANDLE hMailslot;
DWORD cbBytes;
BOOL bResult;
hMailslot = CreateMailslot(TRG_MAILSLOT_NAME, // mailslot name
MAILSLOT_BUFFER_SIZE, // input buffer size
MAILSLOT_WAIT_FOREVER, // no timeout
NULL); // default security attribute
if (INVALID_HANDLE_VALUE == hMailslot) {
g_error("\nError occurred while creating the mailslot: %d",
GetLastError());
return NULL; //Error
}
while (1) {
bResult = ReadFile(hMailslot, // handle to mailslot
szBuffer, // buffer to receive data
sizeof(szBuffer), // size of buffer
&cbBytes, // number of bytes read
NULL); // not overlapped I/O
if ((!bResult) || (0 == cbBytes)) {
g_error("Mailslot error from client: %d", GetLastError());
break;
}
parser = json_parser_new();
if (json_parser_load_from_data(parser, szBuffer, cbBytes, NULL)) {
JsonNode *node = json_parser_get_root(parser);
JsonObject *obj = json_node_get_object(node);
struct trg_mailslot_recv_args *args =
g_new0(struct trg_mailslot_recv_args, 1);
args->present = json_object_has_member(obj, "present")
&& json_object_get_boolean_member(obj, "present");
args->win = win;
if (json_object_has_member(obj, "args")) {
JsonArray *array =
json_object_get_array_member(obj, "args");
GList *arrayList = json_array_get_elements(array);
if (arrayList) {
guint arrayLength = g_list_length(arrayList);
guint i = 0;
GList *li;
args->uris = g_new0(gchar *, arrayLength + 1);
for (li = arrayList; li; li = g_list_next(li)) {
const gchar *liStr =
json_node_get_string((JsonNode *) li->data);
args->uris[i++] = g_strdup(liStr);
}
g_list_free(arrayList);
}
}
json_node_free(node);
g_idle_add(mailslot_recv_args, args);
}
g_object_unref(parser);
}
CloseHandle(hMailslot);
return NULL; //Success
}
void mailslot_start_background_listener(TrgMainWindow * win)
{
g_thread_create(mailslot_recv_thread, win, FALSE, NULL);
}
gboolean mailslot_send_message(gchar ** args)
{
HANDLE hMailSlot = CreateFile(TRG_MAILSLOT_NAME, // mailslot name
GENERIC_WRITE, // mailslot write only
FILE_SHARE_READ, // required for mailslots
NULL, // default security attributes
OPEN_EXISTING, // opens existing mailslot
FILE_ATTRIBUTE_NORMAL, // normal attributes
NULL); // no template file
if (hMailSlot != INVALID_HANDLE_VALUE) {
DWORD cbBytes;
JsonNode *node = json_node_new(JSON_NODE_OBJECT);
JsonObject *obj = json_object_new();
JsonArray *array = json_array_new();
JsonGenerator *generator;
gchar *msg;
int i;
if (args) {
for (i = 0; args[i]; i++)
json_array_add_string_element(array, args[i]);
json_object_set_array_member(obj, "args", array);
g_strfreev(args);
} else {
json_object_set_boolean_member(obj, "present", TRUE);
}
json_node_take_object(node, obj);
generator = json_generator_new();
json_generator_set_root(generator, node);
msg = json_generator_to_data(generator, NULL);
json_node_free(node);
g_object_unref(generator);
WriteFile(hMailSlot, // handle to mailslot
msg, // buffer to write from
strlen(msg) + 1, // number of bytes to write, include the NULL
&cbBytes, // number of bytes written
NULL);
CloseHandle(hMailSlot);
g_free(msg);
return TRUE;
}
return FALSE;
}
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