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gtk2/gdk/broadway/broadway-server.c
Alexander Larsson da8ff82df5 broadway: Make Sec-WebSocket-Origin optional 
Sometimes we get no Origin in the request
2013-01-10 22:50:03 +01:00

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#include "broadway-server.h"
#include "broadway-output.h"
#include <glib.h>
#include <glib/gprintf.h>
#include "gdktypes.h"
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
typedef struct BroadwayInput BroadwayInput;
typedef struct BroadwayWindow BroadwayWindow;
struct _BroadwayServer {
GObject parent_instance;
char *address;
int port;
GSocketService *service;
BroadwayOutput *output;
guint32 id_counter;
guint32 saved_serial;
guint64 last_seen_time;
BroadwayInput *input;
GList *input_messages;
guint process_input_idle;
GHashTable *id_ht;
GList *toplevels;
BroadwayWindow *root;
guint32 screen_width;
guint32 screen_height;
gint32 mouse_in_toplevel_id;
int last_x, last_y; /* in root coords */
guint32 last_state;
gint32 real_mouse_in_toplevel_id; /* Not affected by grabs */
/* Explicit pointer grabs: */
gint32 pointer_grab_window_id; /* -1 => none */
gint32 pointer_grab_client_id; /* -1 => none */
guint32 pointer_grab_time;
gboolean pointer_grab_owner_events;
/* Future data, from the currently queued events */
int future_root_x;
int future_root_y;
guint32 future_state;
int future_mouse_in_toplevel;
};
struct _BroadwayServerClass
{
GObjectClass parent_class;
};
typedef struct HttpRequest {
BroadwayServer *server;
GSocketConnection *connection;
GDataInputStream *data;
GString *request;
} HttpRequest;
struct BroadwayInput {
BroadwayServer *server;
GSocketConnection *connection;
GByteArray *buffer;
GSource *source;
gboolean seen_time;
gint64 time_base;
gboolean proto_v7_plus;
gboolean binary;
};
struct BroadwayWindow {
gint32 id;
gint32 x;
gint32 y;
gint32 width;
gint32 height;
gboolean is_temp;
gboolean last_synced;
gboolean visible;
gint32 transient_for;
cairo_surface_t *last_surface;
};
static void broadway_server_resync_windows (BroadwayServer *server);
G_DEFINE_TYPE (BroadwayServer, broadway_server, G_TYPE_OBJECT)
static void
broadway_server_init (BroadwayServer *server)
{
BroadwayWindow *root;
server->service = g_socket_service_new ();
server->pointer_grab_window_id = -1;
server->saved_serial = 1;
server->last_seen_time = 1;
server->id_ht = g_hash_table_new (NULL, NULL);
server->id_counter = 0;
root = g_new0 (BroadwayWindow, 1);
root->id = server->id_counter++;
root->width = 1024;
root->height = 768;
root->visible = TRUE;
server->root = root;
g_hash_table_insert (server->id_ht,
GINT_TO_POINTER (root->id),
root);
}
static void
broadway_server_finalize (GObject *object)
{
BroadwayServer *server = BROADWAY_SERVER (object);
g_free (server->address);
G_OBJECT_CLASS (broadway_server_parent_class)->finalize (object);
}
static void
broadway_server_class_init (BroadwayServerClass * class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->finalize = broadway_server_finalize;
}
static void start_output (HttpRequest *request, gboolean proto_v7_plus, gboolean binary);
static void
http_request_free (HttpRequest *request)
{
g_object_unref (request->connection);
g_object_unref (request->data);
g_string_free (request->request, TRUE);
g_free (request);
}
static void
broadway_input_free (BroadwayInput *input)
{
g_object_unref (input->connection);
g_byte_array_free (input->buffer, FALSE);
g_source_destroy (input->source);
g_free (input);
}
static void
update_event_state (BroadwayServer *server,
BroadwayInputMsg *message)
{
BroadwayWindow *window;
switch (message->base.type) {
case BROADWAY_EVENT_ENTER:
server->last_x = message->pointer.root_x;
server->last_y = message->pointer.root_y;
server->last_state = message->pointer.state;
server->real_mouse_in_toplevel_id = message->pointer.mouse_window_id;
/* TODO: Unset when it dies */
server->mouse_in_toplevel_id = message->pointer.event_window_id;
break;
case BROADWAY_EVENT_LEAVE:
server->last_x = message->pointer.root_x;
server->last_y = message->pointer.root_y;
server->last_state = message->pointer.state;
server->real_mouse_in_toplevel_id = message->pointer.mouse_window_id;
server->mouse_in_toplevel_id = 0;
break;
case BROADWAY_EVENT_POINTER_MOVE:
server->last_x = message->pointer.root_x;
server->last_y = message->pointer.root_y;
server->last_state = message->pointer.state;
server->real_mouse_in_toplevel_id = message->pointer.mouse_window_id;
break;
case BROADWAY_EVENT_BUTTON_PRESS:
case BROADWAY_EVENT_BUTTON_RELEASE:
server->last_x = message->pointer.root_x;
server->last_y = message->pointer.root_y;
server->last_state = message->pointer.state;
server->real_mouse_in_toplevel_id = message->pointer.mouse_window_id;
break;
case BROADWAY_EVENT_SCROLL:
server->last_x = message->pointer.root_x;
server->last_y = message->pointer.root_y;
server->last_state = message->pointer.state;
server->real_mouse_in_toplevel_id = message->pointer.mouse_window_id;
break;
case BROADWAY_EVENT_KEY_PRESS:
case BROADWAY_EVENT_KEY_RELEASE:
server->last_state = message->key.state;
break;
case BROADWAY_EVENT_GRAB_NOTIFY:
case BROADWAY_EVENT_UNGRAB_NOTIFY:
break;
case BROADWAY_EVENT_CONFIGURE_NOTIFY:
window = g_hash_table_lookup (server->id_ht,
GINT_TO_POINTER (message->configure_notify.id));
if (window != NULL)
{
window->x = message->configure_notify.x;
window->y = message->configure_notify.y;
}
break;
case BROADWAY_EVENT_DELETE_NOTIFY:
break;
case BROADWAY_EVENT_SCREEN_SIZE_CHANGED:
server->root->width = message->screen_resize_notify.width;
server->root->height = message->screen_resize_notify.height;
break;
default:
g_printerr ("update_event_state - Unknown input command %c\n", message->base.type);
break;
}
}
gboolean
broadway_server_lookahead_event (BroadwayServer *server,
const char *types)
{
BroadwayInputMsg *message;
GList *l;
for (l = server->input_messages; l != NULL; l = l->next)
{
message = l->data;
if (strchr (types, message->base.type) != NULL)
return TRUE;
}
return FALSE;
}
static gboolean
is_pointer_event (BroadwayInputMsg *message)
{
return
message->base.type == BROADWAY_EVENT_ENTER ||
message->base.type == BROADWAY_EVENT_LEAVE ||
message->base.type == BROADWAY_EVENT_POINTER_MOVE ||
message->base.type == BROADWAY_EVENT_BUTTON_PRESS ||
message->base.type == BROADWAY_EVENT_BUTTON_RELEASE ||
message->base.type == BROADWAY_EVENT_SCROLL ||
message->base.type == BROADWAY_EVENT_GRAB_NOTIFY ||
message->base.type == BROADWAY_EVENT_UNGRAB_NOTIFY;
}
static void
process_input_message (BroadwayServer *server,
BroadwayInputMsg *message)
{
gint32 client;
update_event_state (server, message);
client = -1;
if (is_pointer_event (message) &&
server->pointer_grab_window_id != -1)
client = server->pointer_grab_client_id;
broadway_events_got_input (message, client);
}
static void
process_input_messages (BroadwayServer *server)
{
BroadwayInputMsg *message;
while (server->input_messages)
{
message = server->input_messages->data;
server->input_messages =
g_list_delete_link (server->input_messages,
server->input_messages);
if (message->base.serial == 0)
{
/* This was sent before we got any requests, but we don't want the
daemon serials to go backwards, so we fix it up to be the last used
serial */
message->base.serial = server->saved_serial - 1;
}
process_input_message (server, message);
g_free (message);
}
}
static void
fake_configure_notify (BroadwayServer *server,
BroadwayWindow *window)
{
BroadwayInputMsg ev = { {0} };
ev.base.type = BROADWAY_EVENT_CONFIGURE_NOTIFY;
ev.base.serial = server->saved_serial - 1;
ev.base.time = server->last_seen_time;
ev.configure_notify.id = window->id;
ev.configure_notify.x = window->x;
ev.configure_notify.y = window->y;
ev.configure_notify.width = window->width;
ev.configure_notify.height = window->height;
process_input_message (server, &ev);
}
static char *
parse_pointer_data (char *p, BroadwayInputPointerMsg *data)
{
data->mouse_window_id = strtol (p, &p, 10);
p++; /* Skip , */
data->event_window_id = strtol (p, &p, 10);
p++; /* Skip , */
data->root_x = strtol (p, &p, 10);
p++; /* Skip , */
data->root_y = strtol (p, &p, 10);
p++; /* Skip , */
data->win_x = strtol (p, &p, 10);
p++; /* Skip , */
data->win_y = strtol (p, &p, 10);
p++; /* Skip , */
data->state = strtol (p, &p, 10);
return p;
}
static void
update_future_pointer_info (BroadwayServer *server, BroadwayInputPointerMsg *data)
{
server->future_root_x = data->root_x;
server->future_root_y = data->root_y;
server->future_state = data->state;
server->future_mouse_in_toplevel = data->mouse_window_id;
}
static void
parse_input_message (BroadwayInput *input, const char *message)
{
BroadwayServer *server = input->server;
BroadwayInputMsg msg;
char *p;
gint64 time_;
memset (&msg, 0, sizeof (msg));
p = (char *)message;
msg.base.type = *p++;
msg.base.serial = (guint32)strtol (p, &p, 10);
p++; /* Skip , */
time_ = strtol(p, &p, 10);
p++; /* Skip , */
if (time_ == 0) {
time_ = server->last_seen_time;
} else {
if (!input->seen_time) {
input->seen_time = TRUE;
/* Calculate time base so that any following times are normalized to start
5 seconds after last_seen_time, to avoid issues that could appear when
a long hiatus due to a reconnect seems to be instant */
input->time_base = time_ - (server->last_seen_time + 5000);
}
time_ = time_ - input->time_base;
}
server->last_seen_time = time_;
msg.base.time = time_;
switch (msg.base.type) {
case BROADWAY_EVENT_ENTER:
case BROADWAY_EVENT_LEAVE:
p = parse_pointer_data (p, &msg.pointer);
update_future_pointer_info (server, &msg.pointer);
p++; /* Skip , */
msg.crossing.mode = strtol(p, &p, 10);
break;
case BROADWAY_EVENT_POINTER_MOVE: /* Mouse move */
p = parse_pointer_data (p, &msg.pointer);
update_future_pointer_info (server, &msg.pointer);
break;
case BROADWAY_EVENT_BUTTON_PRESS:
case BROADWAY_EVENT_BUTTON_RELEASE:
p = parse_pointer_data (p, &msg.pointer);
update_future_pointer_info (server, &msg.pointer);
p++; /* Skip , */
msg.button.button = strtol(p, &p, 10);
break;
case BROADWAY_EVENT_SCROLL:
p = parse_pointer_data (p, &msg.pointer);
update_future_pointer_info (server, &msg.pointer);
p++; /* Skip , */
msg.scroll.dir = strtol(p, &p, 10);
break;
case BROADWAY_EVENT_KEY_PRESS:
case BROADWAY_EVENT_KEY_RELEASE:
msg.key.mouse_window_id = strtol(p, &p, 10);
p++; /* Skip , */
msg.key.key = strtol(p, &p, 10);
p++; /* Skip , */
msg.key.state = strtol(p, &p, 10);
break;
case BROADWAY_EVENT_GRAB_NOTIFY:
case BROADWAY_EVENT_UNGRAB_NOTIFY:
msg.grab_reply.res = strtol(p, &p, 10);
break;
case BROADWAY_EVENT_CONFIGURE_NOTIFY:
msg.configure_notify.id = strtol(p, &p, 10);
p++; /* Skip , */
msg.configure_notify.x = strtol (p, &p, 10);
p++; /* Skip , */
msg.configure_notify.y = strtol (p, &p, 10);
p++; /* Skip , */
msg.configure_notify.width = strtol (p, &p, 10);
p++; /* Skip , */
msg.configure_notify.height = strtol (p, &p, 10);
break;
case BROADWAY_EVENT_DELETE_NOTIFY:
msg.delete_notify.id = strtol(p, &p, 10);
break;
case BROADWAY_EVENT_SCREEN_SIZE_CHANGED:
msg.screen_resize_notify.width = strtol (p, &p, 10);
p++; /* Skip , */
msg.screen_resize_notify.height = strtol (p, &p, 10);
break;
default:
g_printerr ("parse_input_message - Unknown input command %c (%s)\n", msg.base.type, message);
break;
}
server->input_messages = g_list_append (server->input_messages, g_memdup (&msg, sizeof (msg)));
}
static inline void
hex_dump (guchar *data, gsize len)
{
#ifdef DEBUG_WEBSOCKETS
gsize i, j;
for (j = 0; j < len + 15; j += 16)
{
fprintf (stderr, "0x%.4x ", j);
for (i = 0; i < 16; i++)
{
if ((j + i) < len)
fprintf (stderr, "%.2x ", data[j+i]);
else
fprintf (stderr, " ");
if (i == 8)
fprintf (stderr, " ");
}
fprintf (stderr, " | ");
for (i = 0; i < 16; i++)
if ((j + i) < len && g_ascii_isalnum(data[j+i]))
fprintf (stderr, "%c", data[j+i]);
else
fprintf (stderr, ".");
fprintf (stderr, "\n");
}
#endif
}
static void
parse_input (BroadwayInput *input)
{
BroadwayServer *server = input->server;
if (!input->buffer->len)
return;
if (input->proto_v7_plus)
{
hex_dump (input->buffer->data, input->buffer->len);
while (input->buffer->len > 2)
{
gsize len, payload_len;
BroadwayWSOpCode code;
gboolean is_mask, fin;
guchar *buf, *data, *mask;
buf = input->buffer->data;
len = input->buffer->len;
#ifdef DEBUG_WEBSOCKETS
g_print ("Parse input first byte 0x%2x 0x%2x\n", buf[0], buf[1]);
#endif
fin = buf[0] & 0x80;
code = buf[0] & 0x0f;
payload_len = buf[1] & 0x7f;
is_mask = buf[1] & 0x80;
data = buf + 2;
if (payload_len > 125)
{
if (len < 4)
return;
payload_len = GUINT16_FROM_BE( *(guint16 *) data );
data += 2;
}
else if (payload_len > 126)
{
if (len < 10)
return;
payload_len = GUINT64_FROM_BE( *(guint64 *) data );
data += 8;
}
mask = NULL;
if (is_mask)
{
if (data - buf + 4 > len)
return;
mask = data;
data += 4;
}
if (data - buf + payload_len > len)
return; /* wait to accumulate more */
if (is_mask)
{
gsize i;
for (i = 0; i < payload_len; i++)
data[i] ^= mask[i%4];
}
switch (code) {
case BROADWAY_WS_CNX_CLOSE:
break; /* hang around anyway */
case BROADWAY_WS_TEXT:
if (!fin)
{
#ifdef DEBUG_WEBSOCKETS
g_warning ("can't yet accept fragmented input");
#endif
}
else
{
char *terminated = g_strndup((char *)data, payload_len);
parse_input_message (input, terminated);
g_free (terminated);
}
break;
case BROADWAY_WS_CNX_PING:
broadway_output_pong (server->output);
break;
case BROADWAY_WS_CNX_PONG:
break; /* we never send pings, but tolerate pongs */
case BROADWAY_WS_BINARY:
case BROADWAY_WS_CONTINUATION:
default:
{
g_warning ("fragmented or unknown input code 0x%2x with fin set", code);
break;
}
}
g_byte_array_remove_range (input->buffer, 0, data - buf + payload_len);
}
}
else /* old style protocol */
{
char *buf, *ptr;
gsize len;
buf = (char *)input->buffer->data;
len = input->buffer->len;
if (buf[0] != 0)
{
server->input = NULL;
broadway_input_free (input);
return;
}
while ((ptr = memchr (buf, 0xff, len)) != NULL)
{
*ptr = 0;
ptr++;
parse_input_message (input, buf + 1);
len -= ptr - buf;
buf = ptr;
if (len > 0 && buf[0] != 0)
{
server->input = NULL;
broadway_input_free (input);
break;
}
}
g_byte_array_remove_range (input->buffer, 0, buf - (char *)input->buffer->data);
}
}
static gboolean
process_input_idle_cb (BroadwayServer *server)
{
server->process_input_idle = 0;
process_input_messages (server);
return G_SOURCE_REMOVE;
}
static void
queue_process_input_at_idle (BroadwayServer *server)
{
if (server->process_input_idle == 0)
server->process_input_idle =
g_idle_add_full (G_PRIORITY_DEFAULT, (GSourceFunc)process_input_idle_cb, server, NULL);
}
static void
broadway_server_read_all_input_nonblocking (BroadwayServer *server)
{
GInputStream *in;
gssize res;
guint8 buffer[1024];
GError *error;
BroadwayInput *input;
if (server->input == NULL)
return;
input = server->input;
in = g_io_stream_get_input_stream (G_IO_STREAM (input->connection));
error = NULL;
res = g_pollable_input_stream_read_nonblocking (G_POLLABLE_INPUT_STREAM (in),
buffer, sizeof (buffer), NULL, &error);
if (res <= 0)
{
if (res < 0 &&
g_error_matches (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK))
{
g_error_free (error);
return;
}
server->input = NULL;
broadway_input_free (input);
if (res < 0)
{
g_printerr ("input error %s\n", error->message);
g_error_free (error);
}
return;
}
g_byte_array_append (input->buffer, buffer, res);
parse_input (input);
}
static void
broadway_server_consume_all_input (BroadwayServer *server)
{
broadway_server_read_all_input_nonblocking (server);
/* Since we're parsing input but not processing the resulting messages
we might not get a readable callback on the stream, so queue an idle to
process the messages */
queue_process_input_at_idle (server);
}
static gboolean
input_data_cb (GObject *stream,
BroadwayInput *input)
{
BroadwayServer *server = input->server;
broadway_server_read_all_input_nonblocking (server);
process_input_messages (server);
return TRUE;
}
guint32
broadway_server_get_next_serial (BroadwayServer *server)
{
if (server->output)
return broadway_output_get_next_serial (server->output);
return server->saved_serial;
}
void
broadway_server_get_screen_size (BroadwayServer *server,
guint32 *width,
guint32 *height)
{
*width = server->root->width;
*height = server->root->height;
}
void
broadway_server_flush (BroadwayServer *server)
{
if (server->output &&
!broadway_output_flush (server->output))
{
server->saved_serial = broadway_output_get_next_serial (server->output);
broadway_output_free (server->output);
server->output = NULL;
}
}
void
broadway_server_sync (BroadwayServer *server)
{
broadway_server_flush (server);
}
/* TODO: This is not used atm, is it needed? */
/* Note: This may be called while handling a message (i.e. sorta recursively) */
BroadwayInputMsg *
broadway_server_block_for_input (BroadwayServer *server, char op,
guint32 serial, gboolean remove_message)
{
BroadwayInputMsg *message;
gssize res;
guint8 buffer[1024];
BroadwayInput *input;
GInputStream *in;
GList *l;
broadway_server_flush (server);
if (server->input == NULL)
return NULL;
input = server->input;
while (TRUE) {
/* Check for existing reply in queue */
for (l = server->input_messages; l != NULL; l = l->next)
{
message = l->data;
if (message->base.type == op)
{
if (message->base.serial == serial)
{
if (remove_message)
server->input_messages =
g_list_delete_link (server->input_messages, l);
return message;
}
}
}
/* Not found, read more, blocking */
in = g_io_stream_get_input_stream (G_IO_STREAM (input->connection));
res = g_input_stream_read (in, buffer, sizeof (buffer), NULL, NULL);
if (res <= 0)
return NULL;
g_byte_array_append (input->buffer, buffer, res);
parse_input (input);
/* Since we're parsing input but not processing the resulting messages
we might not get a readable callback on the stream, so queue an idle to
process the messages */
queue_process_input_at_idle (server);
}
}
static char *
parse_line (char *line, char *key)
{
char *p;
if (!g_str_has_prefix (line, key))
return NULL;
p = line + strlen (key);
if (*p != ':')
return NULL;
p++;
/* Skip optional initial space */
if (*p == ' ')
p++;
return p;
}
static void
send_error (HttpRequest *request,
int error_code,
const char *reason)
{
char *res;
res = g_strdup_printf ("HTTP/1.0 %d %s\r\n\r\n"
"<html><head><title>%d %s</title></head>"
"<body>%s</body></html>",
error_code, reason,
error_code, reason,
reason);
/* TODO: This should really be async */
g_output_stream_write_all (g_io_stream_get_output_stream (G_IO_STREAM (request->connection)),
res, strlen (res), NULL, NULL, NULL);
g_free (res);
http_request_free (request);
}
/* magic from: http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-17 */
#define SEC_WEB_SOCKET_KEY_MAGIC "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
/* 'x3JJHMbDL1EzLkh9GBhXDw==' generates 'HSmrc0sMlYUkAGmm5OPpG2HaGWk=' */
static gchar *
generate_handshake_response_wsietf_v7 (const gchar *key)
{
gsize digest_len = 20;
guchar digest[digest_len];
GChecksum *checksum;
checksum = g_checksum_new (G_CHECKSUM_SHA1);
if (!checksum)
return NULL;
g_checksum_update (checksum, (guchar *)key, -1);
g_checksum_update (checksum, (guchar *)SEC_WEB_SOCKET_KEY_MAGIC, -1);
g_checksum_get_digest (checksum, digest, &digest_len);
g_checksum_free (checksum);
g_assert (digest_len == 20);
return g_base64_encode (digest, digest_len);
}
static void
start_input (HttpRequest *request, gboolean binary)
{
char **lines;
char *p;
int num_key1, num_key2;
guint64 key1, key2;
int num_space;
int i;
guint8 challenge[16];
char *res;
gsize len;
GChecksum *checksum;
char *origin, *host;
BroadwayServer *server;
BroadwayInput *input;
const void *data_buffer;
gsize data_buffer_size;
GInputStream *in;
char *key_v7;
gboolean proto_v7_plus;
server = request->server;
#ifdef DEBUG_WEBSOCKETS
g_print ("incoming request:\n%s\n", request->request->str);
#endif
lines = g_strsplit (request->request->str, "\n", 0);
num_key1 = 0;
num_key2 = 0;
key1 = 0;
key2 = 0;
key_v7 = NULL;
origin = NULL;
host = NULL;
for (i = 0; lines[i] != NULL; i++)
{
if ((p = parse_line (lines[i], "Sec-WebSocket-Key1")))
{
num_space = 0;
while (*p != 0)
{
if (g_ascii_isdigit (*p))
key1 = key1 * 10 + g_ascii_digit_value (*p);
else if (*p == ' ')
num_space++;
p++;
}
key1 /= num_space;
num_key1++;
}
else if ((p = parse_line (lines[i], "Sec-WebSocket-Key2")))
{
num_space = 0;
while (*p != 0)
{
if (g_ascii_isdigit (*p))
key2 = key2 * 10 + g_ascii_digit_value (*p);
else if (*p == ' ')
num_space++;
p++;
}
key2 /= num_space;
num_key2++;
}
else if ((p = parse_line (lines[i], "Sec-WebSocket-Key")))
{
key_v7 = p;
}
else if ((p = parse_line (lines[i], "Origin")))
{
origin = p;
}
else if ((p = parse_line (lines[i], "Host")))
{
host = p;
}
else if ((p = parse_line (lines[i], "Sec-WebSocket-Origin")))
{
origin = p;
}
}
if (host == NULL)
{
g_strfreev (lines);
send_error (request, 400, "Bad websocket request");
return;
}
if (key_v7 != NULL)
{
char* accept = generate_handshake_response_wsietf_v7 (key_v7);
res = g_strdup_printf ("HTTP/1.1 101 Switching Protocols\r\n"
"Upgrade: websocket\r\n"
"Connection: Upgrade\r\n"
"Sec-WebSocket-Accept: %s\r\n"
"%s%s%s"
"Sec-WebSocket-Location: ws://%s/socket\r\n"
"Sec-WebSocket-Protocol: broadway\r\n"
"\r\n", accept,
origin?"Sec-WebSocket-Origin: ":"", origin?origin:"", origin?"\r\n":"",
host);
g_free (accept);
#ifdef DEBUG_WEBSOCKETS
g_print ("v7 proto response:\n%s", res);
#endif
g_output_stream_write_all (g_io_stream_get_output_stream (G_IO_STREAM (request->connection)),
res, strlen (res), NULL, NULL, NULL);
g_free (res);
proto_v7_plus = TRUE;
}
else
{
if (num_key1 != 1 || num_key2 != 1)
{
g_strfreev (lines);
send_error (request, 400, "Bad websocket request");
return;
}
challenge[0] = (key1 >> 24) & 0xff;
challenge[1] = (key1 >> 16) & 0xff;
challenge[2] = (key1 >> 8) & 0xff;
challenge[3] = (key1 >> 0) & 0xff;
challenge[4] = (key2 >> 24) & 0xff;
challenge[5] = (key2 >> 16) & 0xff;
challenge[6] = (key2 >> 8) & 0xff;
challenge[7] = (key2 >> 0) & 0xff;
if (!g_input_stream_read_all (G_INPUT_STREAM (request->data), challenge+8, 8, NULL, NULL, NULL))
{
g_strfreev (lines);
send_error (request, 400, "Bad websocket request");
return;
}
checksum = g_checksum_new (G_CHECKSUM_MD5);
g_checksum_update (checksum, challenge, 16);
len = 16;
g_checksum_get_digest (checksum, challenge, &len);
g_checksum_free (checksum);
res = g_strdup_printf ("HTTP/1.1 101 WebSocket Protocol Handshake\r\n"
"Upgrade: WebSocket\r\n"
"Connection: Upgrade\r\n"
"%s%s%s"
"Sec-WebSocket-Location: ws://%s/socket\r\n"
"Sec-WebSocket-Protocol: broadway\r\n"
"\r\n",
origin?"Sec-WebSocket-Origin: ":"", origin?origin:"", origin?"\r\n":"",
host);
#ifdef DEBUG_WEBSOCKETS
g_print ("legacy response:\n%s", res);
#endif
g_output_stream_write_all (g_io_stream_get_output_stream (G_IO_STREAM (request->connection)),
res, strlen (res), NULL, NULL, NULL);
g_free (res);
g_output_stream_write_all (g_io_stream_get_output_stream (G_IO_STREAM (request->connection)),
challenge, 16, NULL, NULL, NULL);
proto_v7_plus = FALSE;
}
if (server->input != NULL)
{
broadway_input_free (server->input);
server->input = NULL;
}
input = g_new0 (BroadwayInput, 1);
input->server = request->server;
input->connection = g_object_ref (request->connection);
input->proto_v7_plus = proto_v7_plus;
input->binary = binary;
data_buffer = g_buffered_input_stream_peek_buffer (G_BUFFERED_INPUT_STREAM (request->data), &data_buffer_size);
input->buffer = g_byte_array_sized_new (data_buffer_size);
g_byte_array_append (input->buffer, data_buffer, data_buffer_size);
server->input = input;
start_output (request, proto_v7_plus, binary);
/* This will free and close the data input stream, but we got all the buffered content already */
http_request_free (request);
in = g_io_stream_get_input_stream (G_IO_STREAM (input->connection));
input->source = g_pollable_input_stream_create_source (G_POLLABLE_INPUT_STREAM (in), NULL);
g_source_set_callback (input->source, (GSourceFunc)input_data_cb, input, NULL);
g_source_attach (input->source, NULL);
/* Process any data in the pipe already */
parse_input (input);
process_input_messages (server);
g_strfreev (lines);
}
static void
start_output (HttpRequest *request, gboolean proto_v7_plus, gboolean binary)
{
GSocket *socket;
BroadwayServer *server;
int flag = 1;
socket = g_socket_connection_get_socket (request->connection);
setsockopt(g_socket_get_fd (socket), IPPROTO_TCP,
TCP_NODELAY, (char *) &flag, sizeof(int));
server = BROADWAY_SERVER (request->server);
if (server->output)
{
server->saved_serial = broadway_output_get_next_serial (server->output);
broadway_output_free (server->output);
}
server->output =
broadway_output_new (g_io_stream_get_output_stream (G_IO_STREAM (request->connection)),
server->saved_serial, proto_v7_plus, binary);
broadway_server_resync_windows (server);
if (server->pointer_grab_window_id != -1)
broadway_output_grab_pointer (server->output,
server->pointer_grab_window_id,
server->pointer_grab_owner_events);
}
static void
send_data (HttpRequest *request,
const char *mimetype,
const char *data, gsize len)
{
char *res;
res = g_strdup_printf ("HTTP/1.0 200 OK\r\n"
"Content-Type: %s\r\n"
"Content-Length: %"G_GSIZE_FORMAT"\r\n"
"\r\n",
mimetype, len);
/* TODO: This should really be async */
g_output_stream_write_all (g_io_stream_get_output_stream (G_IO_STREAM (request->connection)),
res, strlen (res), NULL, NULL, NULL);
g_free (res);
g_output_stream_write_all (g_io_stream_get_output_stream (G_IO_STREAM (request->connection)),
data, len, NULL, NULL, NULL);
http_request_free (request);
}
#include "clienthtml.h"
#include "broadwayjs.h"
static void
got_request (HttpRequest *request)
{
char *start, *escaped, *tmp, *version, *query;
if (!g_str_has_prefix (request->request->str, "GET "))
{
send_error (request, 501, "Only GET implemented");
return;
}
start = request->request->str + 4; /* Skip "GET " */
while (*start == ' ')
start++;
for (tmp = start; *tmp != 0 && *tmp != ' ' && *tmp != '\n'; tmp++)
;
escaped = g_strndup (start, tmp - start);
version = NULL;
if (*tmp == ' ')
{
start = tmp;
while (*start == ' ')
start++;
for (tmp = start; *tmp != 0 && *tmp != ' ' && *tmp != '\n'; tmp++)
;
version = g_strndup (start, tmp - start);
}
query = strchr (escaped, '?');
if (query)
*query = 0;
if (strcmp (escaped, "/client.html") == 0 || strcmp (escaped, "/") == 0)
send_data (request, "text/html", client_html, G_N_ELEMENTS(client_html) - 1);
else if (strcmp (escaped, "/broadway.js") == 0)
send_data (request, "text/javascript", broadway_js, G_N_ELEMENTS(broadway_js) - 1);
else if (strcmp (escaped, "/socket") == 0)
start_input (request, FALSE);
else if (strcmp (escaped, "/socket-bin") == 0)
start_input (request, TRUE);
else
send_error (request, 404, "File not found");
g_free (escaped);
g_free (version);
}
static void
got_http_request_line (GInputStream *stream,
GAsyncResult *result,
HttpRequest *request)
{
char *line;
line = g_data_input_stream_read_line_finish (G_DATA_INPUT_STREAM (stream), result, NULL, NULL);
if (line == NULL)
{
http_request_free (request);
g_printerr ("Error reading request lines\n");
return;
}
if (strlen (line) == 0)
got_request (request);
else
{
/* Protect against overflow in request length */
if (request->request->len > 1024 * 5)
{
send_error (request, 400, "Request too long");
}
else
{
g_string_append_printf (request->request, "%s\n", line);
g_data_input_stream_read_line_async (request->data, 0, NULL,
(GAsyncReadyCallback)got_http_request_line, request);
}
}
g_free (line);
}
static gboolean
handle_incoming_connection (GSocketService *service,
GSocketConnection *connection,
GObject *source_object)
{
HttpRequest *request;
GInputStream *in;
request = g_new0 (HttpRequest, 1);
request->connection = g_object_ref (connection);
request->server = BROADWAY_SERVER (source_object);
request->request = g_string_new ("");
in = g_io_stream_get_input_stream (G_IO_STREAM (connection));
request->data = g_data_input_stream_new (in);
g_filter_input_stream_set_close_base_stream (G_FILTER_INPUT_STREAM (request->data), FALSE);
/* Be tolerant of input */
g_data_input_stream_set_newline_type (request->data, G_DATA_STREAM_NEWLINE_TYPE_ANY);
g_data_input_stream_read_line_async (request->data, 0, NULL,
(GAsyncReadyCallback)got_http_request_line, request);
return TRUE;
}
BroadwayServer *
broadway_server_new (char *address, int port, GError **error)
{
BroadwayServer *server;
GInetAddress *inet_address;
GSocketAddress *socket_address;
server = g_object_new (BROADWAY_TYPE_SERVER, NULL);
server->port = port;
server->address = g_strdup (address);
if (address == NULL)
{
if (!g_socket_listener_add_inet_port (G_SOCKET_LISTENER (server->service),
server->port,
G_OBJECT (server),
error))
{
g_prefix_error (error, "Unable to listen to port %d: ", server->port);
return NULL;
}
}
else
{
inet_address = g_inet_address_new_from_string (address);
if (inet_address == NULL)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA, "Invalid ip address %s: ", address);
return NULL;
}
socket_address = g_inet_socket_address_new (inet_address, port);
g_object_unref (inet_address);
if (!g_socket_listener_add_address (G_SOCKET_LISTENER (server->service),
socket_address,
G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_TCP,
G_OBJECT (server),
NULL,
error))
{
g_prefix_error (error, "Unable to listen to %s:%d: ", server->address, server->port);
g_object_unref (socket_address);
return NULL;
}
g_object_unref (socket_address);
}
g_signal_connect (server->service, "incoming",
G_CALLBACK (handle_incoming_connection), NULL);
return server;
}
guint32
broadway_server_get_last_seen_time (BroadwayServer *server)
{
broadway_server_consume_all_input (server);
return (guint32) server->last_seen_time;
}
void
broadway_server_query_mouse (BroadwayServer *server,
guint32 *toplevel,
gint32 *root_x,
gint32 *root_y,
guint32 *mask)
{
if (server->output)
{
broadway_server_consume_all_input (server);
if (root_x)
*root_x = server->future_root_x;
if (root_y)
*root_y = server->future_root_y;
if (mask)
*mask = server->future_state;
if (toplevel)
*toplevel = server->future_mouse_in_toplevel;
return;
}
/* Fallback when unconnected */
if (root_x)
*root_x = server->last_x;
if (root_y)
*root_y = server->last_y;
if (mask)
*mask = server->last_state;
if (toplevel)
*toplevel = server->mouse_in_toplevel_id;
}
void
broadway_server_destroy_window (BroadwayServer *server,
gint id)
{
BroadwayWindow *window;
if (server->mouse_in_toplevel_id == id)
{
/* TODO: Send leave + enter event, update cursors, etc */
server->mouse_in_toplevel_id = 0;
}
if (server->pointer_grab_window_id == id)
server->pointer_grab_window_id = -1;
if (server->output)
broadway_output_destroy_surface (server->output,
id);
window = g_hash_table_lookup (server->id_ht,
GINT_TO_POINTER (id));
if (window != NULL)
{
server->toplevels = g_list_remove (server->toplevels, window);
g_hash_table_remove (server->id_ht,
GINT_TO_POINTER (id));
g_free (window);
}
}
gboolean
broadway_server_window_show (BroadwayServer *server,
gint id)
{
BroadwayWindow *window;
gboolean sent = FALSE;
window = g_hash_table_lookup (server->id_ht,
GINT_TO_POINTER (id));
if (window == NULL)
return FALSE;
window->visible = TRUE;
if (server->output)
{
broadway_output_show_surface (server->output, window->id);
sent = TRUE;
}
return sent;
}
gboolean
broadway_server_window_hide (BroadwayServer *server,
gint id)
{
BroadwayWindow *window;
gboolean sent = FALSE;
window = g_hash_table_lookup (server->id_ht,
GINT_TO_POINTER (id));
if (window == NULL)
return FALSE;
window->visible = FALSE;
if (server->mouse_in_toplevel_id == id)
{
/* TODO: Send leave + enter event, update cursors, etc */
server->mouse_in_toplevel_id = 0;
}
if (server->pointer_grab_window_id == id)
server->pointer_grab_window_id = -1;
if (server->output)
{
broadway_output_hide_surface (server->output, window->id);
sent = TRUE;
}
return sent;
}
void
broadway_server_window_set_transient_for (BroadwayServer *server,
gint id, gint parent)
{
BroadwayWindow *window;
window = g_hash_table_lookup (server->id_ht,
GINT_TO_POINTER (id));
if (window == NULL)
return;
window->transient_for = parent;
if (server->output)
{
broadway_output_set_transient_for (server->output, window->id, window->transient_for);
broadway_server_flush (server);
}
}
gboolean
broadway_server_has_client (BroadwayServer *server)
{
return server->output != NULL;
}
static void
_cairo_region (cairo_t *cr,
const cairo_region_t *region)
{
cairo_rectangle_int_t box;
gint n_boxes, i;
g_return_if_fail (cr != NULL);
g_return_if_fail (region != NULL);
n_boxes = cairo_region_num_rectangles (region);
for (i = 0; i < n_boxes; i++)
{
cairo_region_get_rectangle (region, i, &box);
cairo_rectangle (cr, box.x, box.y, box.width, box.height);
}
}
static void
copy_region (cairo_surface_t *surface,
cairo_region_t *area,
gint dx,
gint dy)
{
cairo_t *cr;
cr = cairo_create (surface);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
_cairo_region (cr, area);
cairo_clip (cr);
/* NB: This is a self-copy and Cairo doesn't support that yet.
* So we do a litle trick.
*/
cairo_push_group (cr);
cairo_set_source_surface (cr, surface, dx, dy);
cairo_paint (cr);
cairo_pop_group_to_source (cr);
cairo_paint (cr);
cairo_destroy (cr);
}
gboolean
broadway_server_window_translate (BroadwayServer *server,
gint id,
cairo_region_t *area,
gint dx,
gint dy)
{
BroadwayWindow *window;
gboolean sent = FALSE;
window = g_hash_table_lookup (server->id_ht,
GINT_TO_POINTER (id));
if (window == NULL)
return FALSE;
if (window->last_synced &&
server->output)
{
BroadwayRect *rects;
cairo_rectangle_int_t rect;
int i, n_rects;
copy_region (window->last_surface, area, dx, dy);
n_rects = cairo_region_num_rectangles (area);
rects = g_new (BroadwayRect, n_rects);
for (i = 0; i < n_rects; i++)
{
cairo_region_get_rectangle (area, i, &rect);
rects[i].x = rect.x;
rects[i].y = rect.y;
rects[i].width = rect.width;
rects[i].height = rect.height;
}
broadway_output_copy_rectangles (server->output,
window->id,
rects, n_rects, dx, dy);
g_free (rects);
sent = TRUE;
}
return sent;
}
static void
diff_surfaces (cairo_surface_t *surface,
cairo_surface_t *old_surface)
{
guint8 *data, *old_data;
guint32 *line, *old_line;
int w, h, stride, old_stride;
int x, y;
data = cairo_image_surface_get_data (surface);
old_data = cairo_image_surface_get_data (old_surface);
w = cairo_image_surface_get_width (surface);
h = cairo_image_surface_get_height (surface);
stride = cairo_image_surface_get_stride (surface);
old_stride = cairo_image_surface_get_stride (old_surface);
for (y = 0; y < h; y++)
{
line = (guint32 *)data;
old_line = (guint32 *)old_data;
for (x = 0; x < w; x++)
{
if ((*line & 0xffffff) == (*old_line & 0xffffff))
*old_line = 0;
else
*old_line = *line | 0xff000000;
line ++;
old_line ++;
}
data += stride;
old_data += old_stride;
}
}
void
broadway_server_window_update (BroadwayServer *server,
gint id,
cairo_surface_t *surface)
{
cairo_t *cr;
BroadwayWindow *window;
if (surface == NULL)
return;
window = g_hash_table_lookup (server->id_ht,
GINT_TO_POINTER (id));
if (window == NULL)
return;
if (window->last_surface == NULL)
window->last_surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
window->width,
window->height);
if (server->output != NULL)
{
if (window->last_synced)
{
diff_surfaces (surface,
window->last_surface);
broadway_output_put_rgba (server->output, window->id, 0, 0,
cairo_image_surface_get_width (window->last_surface),
cairo_image_surface_get_height (window->last_surface),
cairo_image_surface_get_stride (window->last_surface),
cairo_image_surface_get_data (window->last_surface));
}
else
{
window->last_synced = TRUE;
broadway_output_put_rgb (server->output, window->id, 0, 0,
cairo_image_surface_get_width (surface),
cairo_image_surface_get_height (surface),
cairo_image_surface_get_stride (surface),
cairo_image_surface_get_data (surface));
}
broadway_output_surface_flush (server->output, window->id);
}
cr = cairo_create (window->last_surface);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
}
gboolean
broadway_server_window_move_resize (BroadwayServer *server,
gint id,
gboolean with_move,
int x,
int y,
int width,
int height)
{
BroadwayWindow *window;
gboolean with_resize;
gboolean sent = FALSE;
cairo_t *cr;
window = g_hash_table_lookup (server->id_ht,
GINT_TO_POINTER (id));
if (window == NULL)
return FALSE;
with_resize = width != window->width || height != window->height;
window->width = width;
window->height = height;
if (with_resize && window->last_surface != NULL)
{
cairo_surface_t *old;
old = window->last_surface;
window->last_surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
width, height);
cr = cairo_create (window->last_surface);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_surface (cr, old, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_destroy (old);
}
if (server->output != NULL)
{
broadway_output_move_resize_surface (server->output,
window->id,
with_move, x, y,
with_resize, window->width, window->height);
sent = TRUE;
}
else
{
if (with_move)
{
window->x = x;
window->y = y;
}
fake_configure_notify (server, window);
}
return sent;
}
guint32
broadway_server_grab_pointer (BroadwayServer *server,
gint client_id,
gint id,
gboolean owner_events,
guint32 event_mask,
guint32 time_)
{
if (server->pointer_grab_window_id != -1 &&
time_ != 0 && server->pointer_grab_time > time_)
return GDK_GRAB_ALREADY_GRABBED;
if (time_ == 0)
time_ = server->last_seen_time;
server->pointer_grab_window_id = id;
server->pointer_grab_client_id = client_id;
server->pointer_grab_owner_events = owner_events;
server->pointer_grab_time = time_;
if (server->output)
{
broadway_output_grab_pointer (server->output,
id,
owner_events);
broadway_server_flush (server);
}
/* TODO: What about toplevel grab events if we're not connected? */
return GDK_GRAB_SUCCESS;
}
guint32
broadway_server_ungrab_pointer (BroadwayServer *server,
guint32 time_)
{
guint32 serial;
if (server->pointer_grab_window_id != -1 &&
time_ != 0 && server->pointer_grab_time > time_)
return 0;
/* TODO: What about toplevel grab events if we're not connected? */
if (server->output)
{
serial = broadway_output_ungrab_pointer (server->output);
broadway_server_flush (server);
}
else
{
serial = server->saved_serial;
}
server->pointer_grab_window_id = -1;
return serial;
}
guint32
broadway_server_new_window (BroadwayServer *server,
int x,
int y,
int width,
int height,
gboolean is_temp)
{
BroadwayWindow *window;
window = g_new0 (BroadwayWindow, 1);
window->id = server->id_counter++;
window->x = x;
window->y = y;
if (x == 0 && y == 0 && !is_temp)
{
/* TODO: Better way to know if we should pick default pos */
window->x = 100;
window->y = 100;
}
window->width = width;
window->height = height;
window->is_temp = is_temp;
g_hash_table_insert (server->id_ht,
GINT_TO_POINTER (window->id),
window);
server->toplevels = g_list_prepend (server->toplevels, window);
if (server->output)
broadway_output_new_surface (server->output,
window->id,
window->x,
window->y,
window->width,
window->height,
window->is_temp);
else
fake_configure_notify (server, window);
return window->id;
}
static void
broadway_server_resync_windows (BroadwayServer *server)
{
GList *l;
if (server->output == NULL)
return;
/* First create all windows */
for (l = server->toplevels; l != NULL; l = l->next)
{
BroadwayWindow *window = l->data;
if (window->id == 0)
continue; /* Skip root */
window->last_synced = FALSE;
broadway_output_new_surface (server->output,
window->id,
window->x,
window->y,
window->width,
window->height,
window->is_temp);
}
/* Then do everything that may reference other windows */
for (l = server->toplevels; l != NULL; l = l->next)
{
BroadwayWindow *window = l->data;
if (window->id == 0)
continue; /* Skip root */
if (window->transient_for != -1)
broadway_output_set_transient_for (server->output, window->id, window->transient_for);
if (window->visible)
{
broadway_output_show_surface (server->output, window->id);
if (window->last_surface != NULL)
{
window->last_synced = TRUE;
broadway_output_put_rgb (server->output, window->id, 0, 0,
cairo_image_surface_get_width (window->last_surface),
cairo_image_surface_get_height (window->last_surface),
cairo_image_surface_get_stride (window->last_surface),
cairo_image_surface_get_data (window->last_surface));
}
broadway_output_surface_flush (server->output, window->id);
}
}
broadway_server_flush (server);
}
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