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#include <glib.h>
#include <gio/gio.h>
#include "connection.h"
#include "cmumble.h"
#include "varint.h"
static gboolean
read_cb(GObject *pollable_stream, gpointer data)
{
GPollableInputStream *input = G_POLLABLE_INPUT_STREAM(pollable_stream);
struct cmumble *cm = data;
gint count;
do {
count = cmumble_recv_msg(cm);
} while (count && g_pollable_input_stream_is_readable(input));
return TRUE;
}
static gboolean
read_udp_socket(GSocket *socket, GIOCondition condition, gpointer user_data)
{
struct cmumble *cm = user_data;
GError *error = NULL;
guchar data[1024];
guchar plain[1020];
gssize size;
size = g_socket_receive(socket, (gchar *) data, sizeof(data),
NULL, &error);
if (size <= 4)
return TRUE;
if (!CryptState_decrypt(&cm->crypt, data, plain, size))
return TRUE;
cm->con.udp.connected = TRUE;
cmumble_read_udp_data(cm, plain, size - 4);
return TRUE;
}
static void
send_udp_tcptunnel(struct cmumble *cm, guint8 *data, gsize len)
{
MumbleProto__UDPTunnel tunnel;
mumble_proto__udptunnel__init(&tunnel);
tunnel.packet.data = data;
tunnel.packet.len = len;
cmumble_send_msg(cm, &tunnel.base);
}
static void
send_udp(struct cmumble *cm, guint8 *data, gsize len)
{
guint8 encrypted[1024];
GError *error = NULL;
g_assert(len <= (sizeof(encrypted) - 4));
CryptState_encrypt(&cm->crypt, data, encrypted, len);
g_socket_send(cm->con.udp.sock, (gchar *) encrypted, len + 4,
NULL, &error);
}
void
cmumble_connection_send_udp_data(struct cmumble *cm, guint8 *data, gsize len)
{
if (cm->con.udp.connected)
send_udp(cm, data, len);
else
send_udp_tcptunnel(cm, data, len);
}
static void
do_udp_ping(struct cmumble *cm)
{
uint8_t data[16];
uint32_t written = 0, pos = 0;
GTimeVal tv;
g_get_current_time(&tv);
data[pos++] = (udp_ping << 5);
encode_varint(&data[pos], &written, tv.tv_sec, sizeof(data)-pos);
pos += written;
send_udp(cm, data, pos);
g_print("udp ping sent: timestamp: %ld\n", tv.tv_sec);
}
void
cmumble_connection_udp_init(struct cmumble *cm)
{
GError *error = NULL;
GSocketAddress *saddr;
cm->con.udp.connected = FALSE;
cm->con.udp.sock = g_socket_new(G_SOCKET_FAMILY_IPV4,
G_SOCKET_TYPE_DATAGRAM,
G_SOCKET_PROTOCOL_UDP,
&error);
g_assert(error == NULL);
saddr = g_socket_connection_get_remote_address(cm->con.conn, &error);
if (saddr == NULL) {
g_printerr("Failed to get remote address for udp setup: %s\n",
error->message);
return;
}
if (!g_socket_connect(cm->con.udp.sock, saddr, NULL, &error)) {
g_object_unref(saddr);
g_object_unref(cm->con.udp.sock);
cm->con.udp.sock = NULL;
return;
}
g_object_unref(saddr);
cm->con.udp.source = g_socket_create_source(cm->con.udp.sock,
G_IO_IN, NULL);
g_source_set_callback(cm->con.udp.source,
(GSourceFunc) read_udp_socket, cm, NULL);
g_source_attach(cm->con.udp.source, NULL);
do_udp_ping(cm);
}
static void
connection_ready(GObject *source_object, GAsyncResult *res, gpointer user_data)
{
struct cmumble *cm = user_data;
struct cmumble_connection *con = &cm->con;
GError *error = NULL;
con->conn = g_socket_client_connect_to_host_finish (con->sock_client,
res, &error);
if (error) {
g_printerr("connect failed: %s\n", error->message);
g_main_loop_quit(cm->loop);
g_error_free(error);
return;
}
g_object_get(G_OBJECT(con->conn),
"input-stream", &con->input,
"output-stream", &con->output, NULL);
if (!G_IS_POLLABLE_INPUT_STREAM(con->input) ||
!g_pollable_input_stream_can_poll(con->input)) {
g_printerr("Error: GSocketConnection is not pollable\n");
g_main_loop_quit(cm->loop);
return;
}
con->source = g_pollable_input_stream_create_source(con->input, NULL);
g_source_set_callback(con->source, (GSourceFunc) read_cb, cm, NULL);
g_source_attach(con->source, NULL);
cmumble_protocol_init(cm);
}
int
cmumble_connection_init(struct cmumble *cm,
const char *host, int port)
{
struct cmumble_connection *con = &cm->con;
con->sock_client = g_socket_client_new();
g_socket_client_set_tls(con->sock_client, TRUE);
g_socket_client_set_tls_validation_flags(con->sock_client,
G_TLS_CERTIFICATE_INSECURE);
g_socket_client_set_family(con->sock_client, G_SOCKET_FAMILY_IPV4);
g_socket_client_set_protocol(con->sock_client,
G_SOCKET_PROTOCOL_TCP);
g_socket_client_set_socket_type(con->sock_client,
G_SOCKET_TYPE_STREAM);
g_socket_client_connect_to_host_async(con->sock_client,
host, port, NULL,
connection_ready, cm);
return 0;
}
int
cmumble_connection_fini(struct cmumble *cm)
{
if (cm->con.source) {
g_source_remove(g_source_get_id(cm->con.source));
g_source_unref(cm->con.source);
}
if (cm->con.conn) {
g_object_unref(G_OBJECT(cm->con.input));
g_object_unref(G_OBJECT(cm->con.output));
g_io_stream_close(G_IO_STREAM(cm->con.conn), NULL, NULL);
g_object_unref(G_OBJECT(cm->con.conn));
}
if (cm->con.sock_client)
g_object_unref(G_OBJECT(cm->con.sock_client));
return 0;
}
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