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gtk/gdk/broadway/broadway-server.c
Matthias Clasen 88dd6e630e broadway: Don't cause traffic when disconnecting 
The recently added transient-for support was causing
roundtrips when a client with transients disconnects,
leading to assertion failures. Avoid that.
2023-03-17 11:00:35 -04:00

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#include "config.h"
#include "broadway-server.h"
#include "broadway-output.h"
#include <glib.h>
#include <glib/gprintf.h>
#include "gdktypes.h"
#include "gdkdeviceprivate.h"
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#elif defined (G_OS_WIN32)
#include <io.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/types.h>
#ifdef G_OS_UNIX
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#endif
#ifdef HAVE_GIO_UNIX
#include <gio/gunixsocketaddress.h>
#endif
#ifdef G_OS_WIN32
#include <windows.h>
#include <string.h>
#endif
typedef struct {
int id;
guint32 tag;
} BroadwayOutstandingRoundtrip;
typedef struct BroadwayInput BroadwayInput;
typedef struct BroadwaySurface BroadwaySurface;
struct _BroadwayServer {
GObject parent_instance;
char *address;
int port;
char *ssl_cert;
char *ssl_key;
GSocketService *service;
BroadwayOutput *output;
guint32 id_counter;
guint32 saved_serial;
guint64 last_seen_time;
BroadwayInput *input;
GList *input_messages;
guint process_input_idle;
GHashTable *surface_id_hash;
GList *surfaces;
BroadwaySurface *root;
gint32 focused_surface_id; /* -1 => none */
int show_keyboard;
guint32 next_texture_id;
GHashTable *textures;
guint32 screen_scale;
gint32 mouse_in_surface_id;
int last_x, last_y; /* in root coords */
guint32 last_state;
gint32 real_mouse_in_surface_id; /* Not affected by grabs */
/* Explicit pointer grabs: */
gint32 pointer_grab_surface_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_surface;
GList *outstanding_roundtrips;
};
struct _BroadwayServerClass
{
GObjectClass parent_class;
};
typedef struct HttpRequest {
BroadwayServer *server;
GSocketConnection *socket_connection;
GIOStream *connection;
GDataInputStream *data;
GString *request;
} HttpRequest;
struct BroadwayInput {
BroadwayServer *server;
BroadwayOutput *output;
GIOStream *connection;
GByteArray *buffer;
GSource *source;
gboolean seen_time;
gint64 time_base;
gboolean active;
};
struct BroadwaySurface {
guint32 owner;
gint32 id;
gint32 x;
gint32 y;
gint32 width;
gint32 height;
gboolean visible;
gint32 transient_for;
guint32 texture;
gboolean modal_hint;
BroadwayNode *nodes;
GHashTable *node_lookup;
};
struct _BroadwayTexture {
grefcount refcount;
guint32 id;
GBytes *bytes;
};
static void broadway_server_resync_surfaces (BroadwayServer *server);
static void send_outstanding_roundtrips (BroadwayServer *server);
static void broadway_server_ref_texture (BroadwayServer *server,
guint32 id);
static GType broadway_server_get_type (void);
G_DEFINE_TYPE (BroadwayServer, broadway_server, G_TYPE_OBJECT)
static void
broadway_texture_free (BroadwayTexture *texture)
{
g_bytes_unref (texture->bytes);
g_free (texture);
}
static void
broadway_node_unref (BroadwayServer *server,
BroadwayNode *node)
{
int i;
if (g_ref_count_dec (&node->refcount))
{
for (i = 0; i < node->n_children; i++)
broadway_node_unref (server, node->children[i]);
if (node->texture_id)
broadway_server_release_texture (server, node->texture_id);
g_free (node);
}
}
static BroadwayNode *
broadway_node_ref (BroadwayNode *node)
{
g_ref_count_inc (&node->refcount);
return node;
}
gboolean
broadway_node_equal (BroadwayNode *a,
BroadwayNode *b)
{
int i;
if (a->type != b->type)
return FALSE;
if (a->n_data != b->n_data)
return FALSE;
/* Don't check data for containers, that is just n_children, which
we don't want to compare for a shallow equal */
if (a->type != BROADWAY_NODE_CONTAINER)
{
for (i = 0; i < a->n_data; i++)
if (a->data[i] != b->data[i])
return FALSE;
}
return TRUE;
}
gboolean
broadway_node_deep_equal (BroadwayNode *a,
BroadwayNode *b)
{
int i;
if (a->hash != b->hash)
return FALSE;
if (!broadway_node_equal (a,b))
return FALSE;
if (a->n_children != b->n_children)
return FALSE;
for (i = 0; i < a->n_children; i++)
if (!broadway_node_deep_equal (a->children[i], b->children[i]))
return FALSE;
return TRUE;
}
void
broadway_node_mark_deep_reused (BroadwayNode *node,
gboolean reused)
{
node->reused = reused;
for (int i = 0; i < node->n_children; i++)
broadway_node_mark_deep_reused (node->children[i], reused);
}
void
broadway_node_mark_deep_consumed (BroadwayNode *node,
gboolean consumed)
{
node->consumed = consumed;
for (int i = 0; i < node->n_children; i++)
broadway_node_mark_deep_consumed (node->children[i], consumed);
}
void
broadway_node_add_to_lookup (BroadwayNode *node,
GHashTable *node_lookup)
{
g_hash_table_insert (node_lookup, GINT_TO_POINTER(node->id), node);
for (int i = 0; i < node->n_children; i++)
broadway_node_add_to_lookup (node->children[i], node_lookup);
}
static void
broadway_server_init (BroadwayServer *server)
{
BroadwaySurface *root;
server->service = g_socket_service_new ();
server->pointer_grab_surface_id = -1;
server->saved_serial = 1;
server->last_seen_time = 1;
server->surface_id_hash = g_hash_table_new (NULL, NULL);
server->id_counter = 0;
server->textures = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL,
(GDestroyNotify)broadway_texture_free);
root = g_new0 (BroadwaySurface, 1);
root->id = server->id_counter++;
root->width = 1024;
root->height = 768;
root->visible = TRUE;
server->root = root;
server->screen_scale = 1;
g_hash_table_insert (server->surface_id_hash,
GINT_TO_POINTER (root->id),
root);
}
static void
broadway_server_finalize (GObject *object)
{
BroadwayServer *server = BROADWAY_SERVER (object);
g_free (server->address);
g_free (server->ssl_cert);
g_free (server->ssl_key);
g_hash_table_destroy (server->textures);
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
broadway_surface_free (BroadwayServer *server,
BroadwaySurface *surface)
{
if (surface->nodes)
broadway_node_unref (server, surface->nodes);
g_hash_table_unref (surface->node_lookup);
g_free (surface);
}
static BroadwaySurface *
broadway_server_lookup_surface (BroadwayServer *server,
guint32 id)
{
return g_hash_table_lookup (server->surface_id_hash,
GINT_TO_POINTER (id));
}
static void start (BroadwayInput *input);
static void
http_request_free (HttpRequest *request)
{
g_object_unref (request->socket_connection);
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)
{
BroadwaySurface *surface;
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_surface_id = message->pointer.mouse_surface_id;
/* TODO: Unset when it dies */
server->mouse_in_surface_id = message->pointer.event_surface_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_surface_id = message->pointer.mouse_surface_id;
server->mouse_in_surface_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_surface_id = message->pointer.mouse_surface_id;
break;
case BROADWAY_EVENT_BUTTON_PRESS:
case BROADWAY_EVENT_BUTTON_RELEASE:
if (message->base.type == BROADWAY_EVENT_BUTTON_PRESS &&
server->focused_surface_id != message->pointer.mouse_surface_id &&
server->pointer_grab_surface_id == -1)
{
broadway_server_surface_raise (server, message->pointer.mouse_surface_id);
broadway_server_focus_surface (server, message->pointer.mouse_surface_id);
broadway_server_flush (server);
}
server->last_x = message->pointer.root_x;
server->last_y = message->pointer.root_y;
server->last_state = message->pointer.state;
server->real_mouse_in_surface_id = message->pointer.mouse_surface_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_surface_id = message->pointer.mouse_surface_id;
break;
case BROADWAY_EVENT_TOUCH:
if (message->touch.touch_type == 0 && message->touch.is_emulated &&
server->focused_surface_id != message->touch.event_surface_id)
{
broadway_server_surface_raise (server, message->touch.event_surface_id);
broadway_server_focus_surface (server, message->touch.event_surface_id);
broadway_server_flush (server);
}
if (message->touch.is_emulated)
{
server->last_x = message->pointer.root_x;
server->last_y = message->pointer.root_y;
}
server->last_state = message->touch.state;
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:
surface = broadway_server_lookup_surface (server, message->configure_notify.id);
if (surface != NULL)
{
surface->x = message->configure_notify.x;
surface->y = message->configure_notify.y;
if (server->focused_surface_id != message->configure_notify.id &&
server->pointer_grab_surface_id == -1 && surface->modal_hint)
{
broadway_server_surface_raise (server, message->configure_notify.id);
broadway_server_focus_surface (server, message->configure_notify.id);
broadway_server_flush (server);
}
}
break;
case BROADWAY_EVENT_ROUNDTRIP_NOTIFY:
break;
case BROADWAY_EVENT_SCREEN_SIZE_CHANGED:
server->root->width = message->screen_resize_notify.width;
server->root->height = message->screen_resize_notify.height;
server->screen_scale = message->screen_resize_notify.scale;
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;
BroadwaySurface *surface;
update_event_state (server, message);
switch (message->base.type) {
case BROADWAY_EVENT_ENTER:
case BROADWAY_EVENT_LEAVE:
case BROADWAY_EVENT_POINTER_MOVE:
case BROADWAY_EVENT_BUTTON_PRESS:
case BROADWAY_EVENT_BUTTON_RELEASE:
case BROADWAY_EVENT_SCROLL:
case BROADWAY_EVENT_GRAB_NOTIFY:
case BROADWAY_EVENT_UNGRAB_NOTIFY:
surface = broadway_server_lookup_surface (server, message->pointer.event_surface_id);
break;
case BROADWAY_EVENT_TOUCH:
surface = broadway_server_lookup_surface (server, message->touch.event_surface_id);
break;
case BROADWAY_EVENT_CONFIGURE_NOTIFY:
surface = broadway_server_lookup_surface (server, message->configure_notify.id);
break;
case BROADWAY_EVENT_ROUNDTRIP_NOTIFY:
surface = broadway_server_lookup_surface (server, message->roundtrip_notify.id);
break;
case BROADWAY_EVENT_KEY_PRESS:
case BROADWAY_EVENT_KEY_RELEASE:
/* TODO: Send to keys focused clients only... */
case BROADWAY_EVENT_FOCUS:
case BROADWAY_EVENT_SCREEN_SIZE_CHANGED:
default:
surface = NULL;
break;
}
if (surface)
client = surface->owner;
else
client = -1;
if (is_pointer_event (message) &&
server->pointer_grab_surface_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,
BroadwaySurface *surface)
{
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 = surface->id;
ev.configure_notify.x = surface->x;
ev.configure_notify.y = surface->y;
ev.configure_notify.width = surface->width;
ev.configure_notify.height = surface->height;
process_input_message (server, &ev);
}
static guint32 *
parse_pointer_data (guint32 *p, BroadwayInputPointerMsg *data)
{
data->mouse_surface_id = ntohl (*p++);
data->event_surface_id = ntohl (*p++);
data->root_x = ntohl (*p++);
data->root_y = ntohl (*p++);
data->win_x = ntohl (*p++);
data->win_y = ntohl (*p++);
data->state = ntohl (*p++);
return p;
}
static guint32 *
parse_touch_data (guint32 *p, BroadwayInputTouchMsg *data)
{
data->touch_type = ntohl (*p++);
data->event_surface_id = ntohl (*p++);
data->sequence_id = ntohl (*p++);
data->is_emulated = ntohl (*p++);
data->root_x = ntohl (*p++);
data->root_y = ntohl (*p++);
data->win_x = ntohl (*p++);
data->win_y = ntohl (*p++);
data->state = ntohl (*p++);
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_surface = data->mouse_surface_id;
}
static void
queue_input_message (BroadwayServer *server, BroadwayInputMsg *msg)
{
server->input_messages = g_list_append (server->input_messages, g_memdup2 (msg, sizeof (BroadwayInputMsg)));
}
static void
parse_input_message (BroadwayInput *input, const unsigned char *message)
{
BroadwayServer *server = input->server;
BroadwayInputMsg msg;
guint32 *p;
gint64 time_;
GList *l;
memset (&msg, 0, sizeof (msg));
p = (guint32 *) message;
msg.base.type = ntohl (*p++);
msg.base.serial = ntohl (*p++);
time_ = ntohl (*p++);
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);
msg.crossing.mode = ntohl (*p++);
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);
msg.button.button = ntohl (*p++);
break;
case BROADWAY_EVENT_SCROLL:
p = parse_pointer_data (p, &msg.pointer);
update_future_pointer_info (server, &msg.pointer);
msg.scroll.dir = ntohl (*p++);
break;
case BROADWAY_EVENT_TOUCH:
p = parse_touch_data (p, &msg.touch);
break;
case BROADWAY_EVENT_KEY_PRESS:
case BROADWAY_EVENT_KEY_RELEASE:
msg.key.surface_id = server->focused_surface_id;
msg.key.key = ntohl (*p++);
msg.key.state = ntohl (*p++);
break;
case BROADWAY_EVENT_GRAB_NOTIFY:
case BROADWAY_EVENT_UNGRAB_NOTIFY:
msg.grab_reply.res = ntohl (*p++);
break;
case BROADWAY_EVENT_CONFIGURE_NOTIFY:
msg.configure_notify.id = ntohl (*p++);
msg.configure_notify.x = ntohl (*p++);
msg.configure_notify.y = ntohl (*p++);
msg.configure_notify.width = ntohl (*p++);
msg.configure_notify.height = ntohl (*p++);
break;
case BROADWAY_EVENT_ROUNDTRIP_NOTIFY:
msg.roundtrip_notify.id = ntohl (*p++);
msg.roundtrip_notify.tag = ntohl (*p++);
msg.roundtrip_notify.local = FALSE;
/* Remove matched outstanding roundtrips */
for (l = server->outstanding_roundtrips; l != NULL; l = l->next)
{
BroadwayOutstandingRoundtrip *rt = l->data;
if (rt->id == msg.roundtrip_notify.id &&
rt->tag == msg.roundtrip_notify.tag)
break;
}
if (l == NULL)
g_warning ("Got unexpected roundtrip reply for id %d, tag %d\n", msg.roundtrip_notify.id, msg.roundtrip_notify.tag);
else
{
BroadwayOutstandingRoundtrip *rt = l->data;
server->outstanding_roundtrips = g_list_delete_link (server->outstanding_roundtrips, l);
g_free (rt);
}
break;
case BROADWAY_EVENT_SCREEN_SIZE_CHANGED:
msg.screen_resize_notify.width = ntohl (*p++);
msg.screen_resize_notify.height = ntohl (*p++);
msg.screen_resize_notify.scale = ntohl (*p++);
break;
default:
g_printerr ("parse_input_message - Unknown input command %c (%s)\n", msg.base.type, message);
break;
}
queue_input_message (server, &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)
{
if (!input->buffer->len)
return;
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 == 126)
{
if (len < 4)
return;
payload_len = GUINT16_FROM_BE( *(guint16 *) data );
data += 2;
}
else if (payload_len == 127)
{
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_BINARY:
if (!fin)
{
#ifdef DEBUG_WEBSOCKETS
g_warning ("can't yet accept fragmented input");
#endif
}
else
{
parse_input_message (input, data);
}
break;
case BROADWAY_WS_CNX_PING:
broadway_output_pong (input->output);
break;
case BROADWAY_WS_CNX_PONG:
break; /* we never send pings, but tolerate pongs */
case BROADWAY_WS_TEXT:
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);
}
}
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 gboolean
broadway_server_read_all_input_nonblocking (BroadwayInput *input)
{
GInputStream *in;
gssize res;
guint8 buffer[1024];
GError *error = NULL;
if (input == NULL)
return FALSE;
in = g_io_stream_get_input_stream (input->connection);
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 TRUE;
}
if (input->server->input == input)
{
send_outstanding_roundtrips (input->server);
input->server->input = NULL;
}
broadway_input_free (input);
if (res < 0)
{
g_printerr ("input error %s\n", error->message);
g_error_free (error);
}
return FALSE;
}
g_byte_array_append (input->buffer, buffer, res);
parse_input (input);
return TRUE;
}
static void
broadway_server_consume_all_input (BroadwayServer *server)
{
broadway_server_read_all_input_nonblocking (server->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 gboolean
input_data_cb (GObject *stream,
BroadwayInput *input)
{
BroadwayServer *server = input->server;
if (!broadway_server_read_all_input_nonblocking (input))
return FALSE;
if (input->active)
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,
guint32 *scale)
{
*width = server->root->width;
*height = server->root->height;
*scale = server->screen_scale;
}
static void
broadway_server_fake_roundtrip_reply (BroadwayServer *server,
int id,
guint32 tag)
{
BroadwayInputMsg msg;
msg.base.type = BROADWAY_EVENT_ROUNDTRIP_NOTIFY;
msg.base.serial = 0;
msg.base.time = server->last_seen_time;
msg.roundtrip_notify.id = id;
msg.roundtrip_notify.tag = tag;
msg.roundtrip_notify.local = 1;
queue_input_message (server, &msg);
queue_process_input_at_idle (server);
}
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;
send_outstanding_roundtrips (server);
}
}
void
broadway_server_roundtrip (BroadwayServer *server,
int id,
guint32 tag)
{
if (server->output)
{
BroadwayOutstandingRoundtrip *rt = g_new0 (BroadwayOutstandingRoundtrip, 1);
rt->id = id;
rt->tag = tag;
server->outstanding_roundtrips = g_list_prepend (server->outstanding_roundtrips, rt);
broadway_output_roundtrip (server->output, id, tag);
}
else
broadway_server_fake_roundtrip_reply (server, id, tag);
}
static const char *
parse_line (const char *line, const char *key)
{
const char *p;
if (g_ascii_strncasecmp (line, key, strlen (key)) != 0)
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 (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 char *
generate_handshake_response_wsietf_v7 (const char *key)
{
gsize digest_len = 20;
guchar digest[20];
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)
{
char **lines;
const char *p;
int i;
char *res;
const char *origin, *host;
BroadwayInput *input;
const void *data_buffer;
gsize data_buffer_size;
GInputStream *in;
const char *key;
GSocket *socket;
int flag = 1;
#ifdef DEBUG_WEBSOCKETS
g_print ("incoming request:\n%s\n", request->request->str);
#endif
lines = g_strsplit (request->request->str, "\n", 0);
key = NULL;
origin = NULL;
host = NULL;
for (i = 0; lines[i] != NULL; i++)
{
if ((p = parse_line (lines[i], "Sec-WebSocket-Key")))
key = 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 != NULL)
{
char* accept = generate_handshake_response_wsietf_v7 (key);
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 (request->connection),
res, strlen (res), NULL, NULL, NULL);
g_free (res);
}
else
{
g_strfreev (lines);
send_error (request, 400, "Bad websocket request");
return;
}
socket = g_socket_connection_get_socket (request->socket_connection);
setsockopt (g_socket_get_fd (socket), IPPROTO_TCP,
TCP_NODELAY, (char *) &flag, sizeof(int));
input = g_new0 (BroadwayInput, 1);
input->server = request->server;
input->connection = g_object_ref (request->connection);
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);
input->output =
broadway_output_new (g_io_stream_get_output_stream (request->connection), 0);
/* 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 (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);
start (input);
/* Process any data in the pipe already */
parse_input (input);
g_strfreev (lines);
}
static void
send_outstanding_roundtrips (BroadwayServer *server)
{
GList *l;
for (l = server->outstanding_roundtrips; l != NULL; l = l->next)
{
BroadwayOutstandingRoundtrip *rt = l->data;
broadway_server_fake_roundtrip_reply (server, rt->id, rt->tag);
}
g_list_free_full (server->outstanding_roundtrips, g_free);
server->outstanding_roundtrips = NULL;
}
static void
start (BroadwayInput *input)
{
BroadwayServer *server;
input->active = TRUE;
server = BROADWAY_SERVER (input->server);
if (server->output)
{
send_outstanding_roundtrips (server);
broadway_output_disconnected (server->output);
broadway_output_flush (server->output);
}
if (server->input != NULL)
{
send_outstanding_roundtrips (server);
broadway_input_free (server->input);
server->input = NULL;
}
server->input = input;
if (server->output)
{
server->saved_serial = broadway_output_get_next_serial (server->output);
broadway_output_free (server->output);
}
server->output = input->output;
broadway_output_set_next_serial (server->output, server->saved_serial);
broadway_output_flush (server->output);
broadway_server_resync_surfaces (server);
if (server->pointer_grab_surface_id != -1)
broadway_output_grab_pointer (server->output,
server->pointer_grab_surface_id,
server->pointer_grab_owner_events);
process_input_messages (server);
}
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 (request->connection),
res, strlen (res), NULL, NULL, NULL);
g_free (res);
g_output_stream_write_all (g_io_stream_get_output_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);
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->socket_connection = g_object_ref (connection);
request->server = BROADWAY_SERVER (source_object);
request->request = g_string_new ("");
if (request->server->ssl_cert && request->server->ssl_key)
{
GError *error = NULL;
GTlsCertificate *certificate;
certificate = g_tls_certificate_new_from_files (request->server->ssl_cert,
request->server->ssl_key,
&error);
if (!certificate)
{
g_warning ("Cannot create TLS certificate: %s", error->message);
g_error_free (error);
return FALSE;
}
request->connection = g_tls_server_connection_new (G_IO_STREAM (connection),
certificate,
&error);
if (!request->connection)
{
g_warning ("Cannot create TLS connection: %s", error->message);
g_error_free (error);
return FALSE;
}
if (!g_tls_connection_handshake (G_TLS_CONNECTION (request->connection),
NULL, &error))
{
g_warning ("Cannot create TLS connection: %s", error->message);
g_error_free (error);
return FALSE;
}
}
else
{
request->connection = G_IO_STREAM (g_object_ref (connection));
}
in = g_io_stream_get_input_stream (request->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,
const char *ssl_cert,
const char *ssl_key,
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);
server->ssl_cert = g_strdup (ssl_cert);
server->ssl_key = g_strdup (ssl_key);
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);
g_object_unref (server);
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);
g_object_unref (server);
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);
g_object_unref (server);
return NULL;
}
g_object_unref (socket_address);
}
g_signal_connect (server->service, "incoming",
G_CALLBACK (handle_incoming_connection), NULL);
return server;
}
BroadwayServer *
broadway_server_on_unix_socket_new (char *address, GError **error)
{
BroadwayServer *server;
GSocketAddress *socket_address = NULL;
server = g_object_new (BROADWAY_TYPE_SERVER, NULL);
server->port = -1;
server->address = g_strdup (address);
if (address == NULL)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA, "Unspecified unix domain socket address");
g_object_unref (server);
return NULL;
}
else
{
#ifdef HAVE_GIO_UNIX
socket_address = g_unix_socket_address_new (address);
#endif
if (socket_address == NULL)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA, "Invalid unix domain socket address %s: ", address);
g_object_unref (server);
return NULL;
}
if (!g_socket_listener_add_address (G_SOCKET_LISTENER (server->service),
socket_address,
G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_DEFAULT,
G_OBJECT (server),
NULL,
error))
{
g_prefix_error (error, "Unable to listen to %s: ", server->address);
g_object_unref (socket_address);
g_object_unref (server);
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 *surface,
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 (surface)
*surface = server->future_mouse_in_surface;
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 (surface)
*surface = server->mouse_in_surface_id;
}
void
broadway_server_destroy_surface (BroadwayServer *server,
int id,
gboolean disconnected)
{
BroadwaySurface *surface;
gint32 transient_for = -1;
if (server->mouse_in_surface_id == id)
{
/* TODO: Send leave + enter event, update cursors, etc */
server->mouse_in_surface_id = 0;
}
if (server->pointer_grab_surface_id == id)
server->pointer_grab_surface_id = -1;
if (server->output)
broadway_output_destroy_surface (server->output, id);
surface = broadway_server_lookup_surface (server, id);
if (surface != NULL)
{
if (server->focused_surface_id == id)
transient_for = surface->transient_for;
server->surfaces = g_list_remove (server->surfaces, surface);
g_hash_table_remove (server->surface_id_hash,
GINT_TO_POINTER (id));
broadway_surface_free (server, surface);
}
if (transient_for != -1 && !disconnected)
{
surface = broadway_server_lookup_surface (server, transient_for);
if (surface != NULL)
{
broadway_server_focus_surface (server, transient_for);
broadway_server_flush (server);
}
}
}
gboolean
broadway_server_surface_show (BroadwayServer *server,
int id)
{
BroadwaySurface *surface;
gboolean sent = FALSE;
surface = broadway_server_lookup_surface (server, id);
if (surface == NULL)
return FALSE;
surface->visible = TRUE;
if (server->output)
{
broadway_output_show_surface (server->output, surface->id);
sent = TRUE;
}
return sent;
}
gboolean
broadway_server_surface_hide (BroadwayServer *server,
int id)
{
BroadwaySurface *surface;
gboolean sent = FALSE;
surface = broadway_server_lookup_surface (server, id);
if (surface == NULL)
return FALSE;
surface->visible = FALSE;
if (server->mouse_in_surface_id == id)
{
/* TODO: Send leave + enter event, update cursors, etc */
server->mouse_in_surface_id = 0;
}
if (server->pointer_grab_surface_id == id)
server->pointer_grab_surface_id = -1;
if (server->output)
{
broadway_output_hide_surface (server->output, surface->id);
sent = TRUE;
}
return sent;
}
void
broadway_server_surface_raise (BroadwayServer *server,
int id)
{
BroadwaySurface *surface;
surface = broadway_server_lookup_surface (server, id);
if (surface == NULL)
return;
server->surfaces = g_list_remove (server->surfaces, surface);
server->surfaces = g_list_append (server->surfaces, surface);
if (server->output)
broadway_output_raise_surface (server->output, surface->id);
}
void
broadway_server_set_show_keyboard (BroadwayServer *server,
gboolean show)
{
server->show_keyboard = show;
if (server->output)
{
broadway_output_set_show_keyboard (server->output, server->show_keyboard);
broadway_server_flush (server);
}
}
void
broadway_server_surface_lower (BroadwayServer *server,
int id)
{
BroadwaySurface *surface;
surface = broadway_server_lookup_surface (server, id);
if (surface == NULL)
return;
server->surfaces = g_list_remove (server->surfaces, surface);
server->surfaces = g_list_prepend (server->surfaces, surface);
if (server->output)
broadway_output_lower_surface (server->output, surface->id);
}
void
broadway_server_surface_set_transient_for (BroadwayServer *server,
int id, int parent)
{
BroadwaySurface *surface;
surface = broadway_server_lookup_surface (server, id);
if (surface == NULL)
return;
surface->transient_for = parent;
if (server->output)
{
broadway_output_set_transient_for (server->output, surface->id, surface->transient_for);
broadway_server_flush (server);
}
}
void
broadway_server_surface_set_modal_hint (BroadwayServer *server,
int id, gboolean modal_hint)
{
BroadwaySurface *surface;
surface = broadway_server_lookup_surface (server, id);
if (surface == NULL)
return;
surface->modal_hint = modal_hint;
}
gboolean
broadway_server_has_client (BroadwayServer *server)
{
return server->output != NULL;
}
#define NODE_SIZE_COLOR 1
#define NODE_SIZE_FLOAT 1
#define NODE_SIZE_POINT 2
#define NODE_SIZE_MATRIX 16
#define NODE_SIZE_SIZE 2
#define NODE_SIZE_RECT (NODE_SIZE_POINT + NODE_SIZE_SIZE)
#define NODE_SIZE_RRECT (NODE_SIZE_RECT + 4 * NODE_SIZE_SIZE)
#define NODE_SIZE_COLOR_STOP (NODE_SIZE_FLOAT + NODE_SIZE_COLOR)
#define NODE_SIZE_SHADOW (NODE_SIZE_COLOR + 3 * NODE_SIZE_FLOAT)
static guint32
rotl (guint32 value, int shift)
{
if ((shift &= 32 - 1) == 0)
return value;
return (value << shift) | (value >> (32 - shift));
}
static BroadwayNode *
decode_nodes (BroadwayServer *server,
BroadwaySurface *surface,
int len,
guint32 data[],
GHashTable *client_texture_map,
int *pos)
{
BroadwayNode *node;
guint32 type, id;
guint32 i, n_stops, n_shadows, n_chars;
guint32 size, n_children;
gint32 texture_offset;
guint32 hash;
guint32 transform_type;
g_assert (*pos < len);
size = 0;
n_children = 0;
texture_offset = -1;
type = data[(*pos)++];
id = data[(*pos)++];
switch (type) {
case BROADWAY_NODE_REUSE:
node = g_hash_table_lookup (surface->node_lookup, GINT_TO_POINTER(id));
g_assert (node != NULL);
return broadway_node_ref (node);
break;
case BROADWAY_NODE_COLOR:
size = NODE_SIZE_RECT + NODE_SIZE_COLOR;
break;
case BROADWAY_NODE_BORDER:
size = NODE_SIZE_RRECT + 4 * NODE_SIZE_FLOAT + 4 * NODE_SIZE_COLOR;
break;
case BROADWAY_NODE_INSET_SHADOW:
case BROADWAY_NODE_OUTSET_SHADOW:
size = NODE_SIZE_RRECT + NODE_SIZE_COLOR + 4 * NODE_SIZE_FLOAT;
break;
case BROADWAY_NODE_TEXTURE:
texture_offset = 4;
size = 5;
break;
case BROADWAY_NODE_CONTAINER:
size = 1;
n_children = data[*pos];
break;
case BROADWAY_NODE_ROUNDED_CLIP:
size = NODE_SIZE_RRECT;
n_children = 1;
break;
case BROADWAY_NODE_CLIP:
size = NODE_SIZE_RECT;
n_children = 1;
break;
case BROADWAY_NODE_TRANSFORM:
transform_type = data[(*pos)];
size = 1;
if (transform_type == 0) {
size += NODE_SIZE_POINT;
} else if (transform_type == 1) {
size += NODE_SIZE_MATRIX;
} else {
g_assert_not_reached();
}
n_children = 1;
break;
case BROADWAY_NODE_LINEAR_GRADIENT:
size = NODE_SIZE_RECT + 2 * NODE_SIZE_POINT;
n_stops = data[*pos + size++];
size += n_stops * NODE_SIZE_COLOR_STOP;
break;
case BROADWAY_NODE_SHADOW:
size = 1;
n_shadows = data[*pos];
size += n_shadows * NODE_SIZE_SHADOW;
n_children = 1;
break;
case BROADWAY_NODE_OPACITY:
size = NODE_SIZE_FLOAT;
n_children = 1;
break;
case BROADWAY_NODE_DEBUG:
n_chars = data[*pos];
size = 1 + (n_chars + 3) / 4;
n_children = 1;
break;
default:
g_assert_not_reached ();
}
node = g_malloc (sizeof(BroadwayNode) + (size - 1) * sizeof(guint32) + n_children * sizeof (BroadwayNode *));
g_ref_count_init (&node->refcount);
node->type = type;
node->id = id;
node->output_id = id;
node->texture_id = 0;
node->n_children = n_children;
node->children = (BroadwayNode **)((char *)node + sizeof(BroadwayNode) + (size - 1) * sizeof(guint32));
node->n_data = size;
for (i = 0; i < size; i++)
{
node->data[i] = data[(*pos)++];
if (i == texture_offset)
{
node->texture_id = GPOINTER_TO_INT (g_hash_table_lookup (client_texture_map, GINT_TO_POINTER (node->data[i])));
broadway_server_ref_texture (server, node->texture_id);
node->data[i] = node->texture_id;
}
}
for (i = 0; i < n_children; i++)
node->children[i] = decode_nodes (server, surface, len, data, client_texture_map, pos);
hash = node->type << 16;
for (i = 0; i < size; i++)
hash ^= rotl (node->data[i], i);
for (i = 0; i < n_children; i++)
hash ^= rotl (node->children[i]->hash, i);
node->hash = hash;
return node;
}
/* passes ownership of nodes */
void
broadway_server_surface_update_nodes (BroadwayServer *server,
int id,
guint32 data[],
int len,
GHashTable *client_texture_map)
{
BroadwaySurface *surface;
int pos = 0;
BroadwayNode *root;
surface = broadway_server_lookup_surface (server, id);
if (surface == NULL)
return;
root = decode_nodes (server, surface, len, data, client_texture_map, &pos);
if (server->output != NULL)
broadway_output_surface_set_nodes (server->output, surface->id,
root,
surface->nodes,
surface->node_lookup);
if (surface->nodes)
broadway_node_unref (server, surface->nodes);
surface->nodes = root;
g_hash_table_remove_all (surface->node_lookup);
broadway_node_add_to_lookup (root, surface->node_lookup);
}
guint32
broadway_server_upload_texture (BroadwayServer *server,
GBytes *bytes)
{
BroadwayTexture *texture;
texture = g_new0 (BroadwayTexture, 1);
g_ref_count_init (&texture->refcount);
texture->id = ++server->next_texture_id;
texture->bytes = g_bytes_ref (bytes);
g_hash_table_replace (server->textures,
GINT_TO_POINTER (texture->id),
texture);
if (server->output)
broadway_output_upload_texture (server->output, texture->id, texture->bytes);
return texture->id;
}
static void
broadway_server_ref_texture (BroadwayServer *server,
guint32 id)
{
BroadwayTexture *texture;
texture = g_hash_table_lookup (server->textures, GINT_TO_POINTER (id));
if (texture)
g_ref_count_inc (&texture->refcount);
}
void
broadway_server_release_texture (BroadwayServer *server,
guint32 id)
{
BroadwayTexture *texture;
texture = g_hash_table_lookup (server->textures, GINT_TO_POINTER (id));
if (texture && g_ref_count_dec (&texture->refcount))
{
g_hash_table_remove (server->textures, GINT_TO_POINTER (id));
if (server->output)
broadway_output_release_texture (server->output, id);
}
}
gboolean
broadway_server_surface_move_resize (BroadwayServer *server,
int id,
gboolean with_move,
int x,
int y,
int width,
int height)
{
BroadwaySurface *surface;
gboolean with_resize;
gboolean sent = FALSE;
surface = broadway_server_lookup_surface (server, id);
if (surface == NULL)
return FALSE;
with_resize = width != surface->width || height != surface->height;
surface->width = width;
surface->height = height;
if (server->output != NULL)
{
broadway_output_move_resize_surface (server->output,
surface->id,
with_move, x, y,
with_resize, surface->width, surface->height);
sent = TRUE;
}
else
{
if (with_move)
{
surface->x = x;
surface->y = y;
}
fake_configure_notify (server, surface);
}
return sent;
}
void
broadway_server_focus_surface (BroadwayServer *server,
int new_focused_surface)
{
BroadwayInputMsg focus_msg;
if (server->focused_surface_id == new_focused_surface)
return;
memset (&focus_msg, 0, sizeof (focus_msg));
focus_msg.base.type = BROADWAY_EVENT_FOCUS;
focus_msg.base.time = broadway_server_get_last_seen_time (server);
focus_msg.focus.old_id = server->focused_surface_id;
focus_msg.focus.new_id = new_focused_surface;
broadway_events_got_input (&focus_msg, -1);
/* Keep track of the new focused surface */
server->focused_surface_id = new_focused_surface;
}
guint32
broadway_server_grab_pointer (BroadwayServer *server,
int client_id,
int id,
gboolean owner_events,
guint32 event_mask,
guint32 time_)
{
if (server->pointer_grab_surface_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_surface_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 surface 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_surface_id != -1 &&
time_ != 0 && server->pointer_grab_time > time_)
return 0;
/* TODO: What about surface 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_surface_id = -1;
return serial;
}
guint32
broadway_server_new_surface (BroadwayServer *server,
guint32 client,
int x,
int y,
int width,
int height)
{
BroadwaySurface *surface;
surface = g_new0 (BroadwaySurface, 1);
surface->owner = client;
surface->id = server->id_counter++;
surface->x = x;
surface->y = y;
surface->width = width;
surface->height = height;
surface->node_lookup = g_hash_table_new (g_direct_hash, g_direct_equal);
g_hash_table_insert (server->surface_id_hash,
GINT_TO_POINTER (surface->id),
surface);
server->surfaces = g_list_append (server->surfaces, surface);
if (server->output)
broadway_output_new_surface (server->output,
surface->id,
surface->x,
surface->y,
surface->width,
surface->height);
else
fake_configure_notify (server, surface);
return surface->id;
}
static void
broadway_server_resync_surfaces (BroadwayServer *server)
{
GHashTableIter iter;
gpointer key, value;
GList *l;
if (server->output == NULL)
return;
/* First upload all textures */
g_hash_table_iter_init (&iter, server->textures);
while (g_hash_table_iter_next (&iter, &key, &value))
{
BroadwayTexture *texture = value;
broadway_output_upload_texture (server->output,
GPOINTER_TO_INT (key),
texture->bytes);
}
/* Then create all surfaces */
for (l = server->surfaces; l != NULL; l = l->next)
{
BroadwaySurface *surface = l->data;
if (surface->id == 0)
continue; /* Skip root */
broadway_output_new_surface (server->output,
surface->id,
surface->x,
surface->y,
surface->width,
surface->height);
}
/* Then do everything that may reference other surfaces */
for (l = server->surfaces; l != NULL; l = l->next)
{
BroadwaySurface *surface = l->data;
if (surface->id == 0)
continue; /* Skip root */
if (surface->transient_for != -1)
broadway_output_set_transient_for (server->output, surface->id,
surface->transient_for);
if (surface->nodes)
broadway_output_surface_set_nodes (server->output, surface->id,
surface->nodes,
NULL, NULL);
if (surface->visible)
broadway_output_show_surface (server->output, surface->id);
}
if (server->show_keyboard)
broadway_output_set_show_keyboard (server->output, TRUE);
broadway_server_flush (server);
}
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