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485 lines
12 KiB
485 lines
12 KiB
/*
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* Copyright © 2008 Kristian Høgsberg
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <stdlib.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <dlfcn.h>
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#include <assert.h>
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#include <ffi.h>
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#include "wayland-server.h"
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#include "wayland-server-protocol.h"
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#include "connection.h"
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struct wl_client {
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struct wl_connection *connection;
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struct wl_event_source *source;
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struct wl_display *display;
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struct wl_list resource_list;
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uint32_t id_count;
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};
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struct wl_display {
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struct wl_object base;
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struct wl_event_loop *loop;
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struct wl_hash_table *objects;
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struct wl_list frame_list;
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uint32_t client_id_range;
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uint32_t id;
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struct wl_list global_list;
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};
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struct wl_frame_listener {
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struct wl_resource resource;
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struct wl_client *client;
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uint32_t key;
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struct wl_list link;
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};
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struct wl_global {
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struct wl_object *object;
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wl_client_connect_func_t func;
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struct wl_list link;
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};
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WL_EXPORT struct wl_surface wl_grab_surface;
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static int wl_debug = 0;
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WL_EXPORT void
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wl_client_post_event(struct wl_client *client, struct wl_object *sender,
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uint32_t opcode, ...)
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{
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struct wl_closure *closure;
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va_list ap;
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if (client == NULL)
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/* wl_grab_surface case */
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return;
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va_start(ap, opcode);
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closure = wl_connection_vmarshal(client->connection,
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sender, opcode, ap,
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&sender->interface->events[opcode]);
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va_end(ap);
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wl_closure_send(closure, client->connection);
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if (wl_debug) {
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fprintf(stderr, " -> ");
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wl_closure_print(closure, sender);
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}
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wl_closure_destroy(closure);
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}
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static void
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wl_client_connection_data(int fd, uint32_t mask, void *data)
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{
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struct wl_client *client = data;
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struct wl_connection *connection = client->connection;
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struct wl_object *object;
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struct wl_closure *closure;
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const struct wl_message *message;
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uint32_t p[2], opcode, size;
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uint32_t cmask = 0;
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int len;
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if (mask & WL_EVENT_READABLE)
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cmask |= WL_CONNECTION_READABLE;
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if (mask & WL_EVENT_WRITEABLE)
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cmask |= WL_CONNECTION_WRITABLE;
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len = wl_connection_data(connection, cmask);
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if (len < 0) {
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wl_client_destroy(client);
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return;
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}
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while (len >= sizeof p) {
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wl_connection_copy(connection, p, sizeof p);
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opcode = p[1] & 0xffff;
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size = p[1] >> 16;
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if (len < size)
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break;
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object = wl_hash_table_lookup(client->display->objects, p[0]);
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if (object == NULL) {
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wl_client_post_event(client, &client->display->base,
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WL_DISPLAY_INVALID_OBJECT, p[0]);
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wl_connection_consume(connection, size);
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len -= size;
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continue;
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}
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if (opcode >= object->interface->method_count) {
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wl_client_post_event(client, &client->display->base,
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WL_DISPLAY_INVALID_METHOD, p[0], opcode);
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wl_connection_consume(connection, size);
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len -= size;
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continue;
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}
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message = &object->interface->methods[opcode];
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closure = wl_connection_demarshal(client->connection, size,
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client->display->objects,
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message);
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len -= size;
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if (closure == NULL && errno == EINVAL) {
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wl_client_post_event(client, &client->display->base,
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WL_DISPLAY_INVALID_METHOD,
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p[0], opcode);
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continue;
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} else if (closure == NULL && errno == ENOMEM) {
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wl_client_post_no_memory(client);
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continue;
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}
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if (wl_debug)
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wl_closure_print(closure, object);
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wl_closure_invoke(closure, object,
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object->implementation[opcode], client);
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wl_closure_destroy(closure);
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}
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}
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static int
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wl_client_connection_update(struct wl_connection *connection,
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uint32_t mask, void *data)
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{
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struct wl_client *client = data;
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uint32_t emask = 0;
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if (mask & WL_CONNECTION_READABLE)
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emask |= WL_EVENT_READABLE;
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if (mask & WL_CONNECTION_WRITABLE)
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emask |= WL_EVENT_WRITEABLE;
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return wl_event_source_fd_update(client->source, mask);
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}
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WL_EXPORT struct wl_display *
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wl_client_get_display(struct wl_client *client)
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{
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return client->display;
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}
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static void
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wl_display_post_range(struct wl_display *display, struct wl_client *client)
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{
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wl_client_post_event(client, &client->display->base,
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WL_DISPLAY_RANGE, display->client_id_range);
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display->client_id_range += 256;
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client->id_count += 256;
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}
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static struct wl_client *
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wl_client_create(struct wl_display *display, int fd)
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{
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struct wl_client *client;
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struct wl_global *global;
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client = malloc(sizeof *client);
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if (client == NULL)
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return NULL;
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memset(client, 0, sizeof *client);
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client->display = display;
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client->source = wl_event_loop_add_fd(display->loop, fd,
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WL_EVENT_READABLE,
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wl_client_connection_data, client);
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client->connection =
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wl_connection_create(fd, wl_client_connection_update, client);
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wl_list_init(&client->resource_list);
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wl_display_post_range(display, client);
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wl_list_for_each(global, &display->global_list, link)
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wl_client_post_event(client, &client->display->base,
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WL_DISPLAY_GLOBAL,
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global->object,
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global->object->interface->name,
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global->object->interface->version);
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wl_list_for_each(global, &display->global_list, link)
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if (global->func)
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global->func(client, global->object);
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return client;
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}
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WL_EXPORT void
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wl_client_add_resource(struct wl_client *client,
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struct wl_resource *resource)
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{
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struct wl_display *display = client->display;
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if (client->id_count-- < 64)
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wl_display_post_range(display, client);
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wl_hash_table_insert(client->display->objects,
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resource->base.id, resource);
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wl_list_insert(client->resource_list.prev, &resource->link);
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}
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WL_EXPORT void
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wl_client_post_no_memory(struct wl_client *client)
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{
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wl_client_post_event(client,
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&client->display->base,
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WL_DISPLAY_NO_MEMORY);
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}
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WL_EXPORT void
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wl_client_post_global(struct wl_client *client, struct wl_object *object)
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{
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wl_client_post_event(client,
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&client->display->base,
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WL_DISPLAY_GLOBAL,
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object,
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object->interface->name,
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object->interface->version);
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}
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WL_EXPORT void
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wl_resource_destroy(struct wl_resource *resource, struct wl_client *client)
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{
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struct wl_display *display = client->display;
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wl_list_remove(&resource->link);
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if (resource->base.id > 0)
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wl_hash_table_remove(display->objects, resource->base.id);
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resource->destroy(resource, client);
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}
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WL_EXPORT void
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wl_client_destroy(struct wl_client *client)
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{
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struct wl_resource *resource, *tmp;
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printf("disconnect from client %p\n", client);
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wl_list_for_each_safe(resource, tmp, &client->resource_list, link)
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wl_resource_destroy(resource, client);
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wl_event_source_remove(client->source);
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wl_connection_destroy(client->connection);
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free(client);
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}
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static void
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display_sync(struct wl_client *client,
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struct wl_display *display, uint32_t key)
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{
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wl_client_post_event(client, &display->base, WL_DISPLAY_SYNC, key);
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}
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static void
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destroy_frame_listener(struct wl_resource *resource, struct wl_client *client)
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{
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struct wl_frame_listener *listener =
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container_of(resource, struct wl_frame_listener, resource);
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wl_list_remove(&listener->link);
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free(listener);
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}
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static void
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display_frame(struct wl_client *client,
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struct wl_display *display, uint32_t key)
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{
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struct wl_frame_listener *listener;
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listener = malloc(sizeof *listener);
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if (listener == NULL) {
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wl_client_post_no_memory(client);
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return;
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}
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/* The listener is a resource so we destroy it when the client
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* goes away. */
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listener->resource.destroy = destroy_frame_listener;
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listener->resource.base.id = 0;
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listener->client = client;
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listener->key = key;
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wl_list_insert(client->resource_list.prev, &listener->resource.link);
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wl_list_insert(display->frame_list.prev, &listener->link);
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}
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struct wl_display_interface display_interface = {
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display_sync,
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display_frame
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};
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WL_EXPORT struct wl_display *
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wl_display_create(void)
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{
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struct wl_display *display;
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const char *debug;
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debug = getenv("WAYLAND_DEBUG");
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if (debug)
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wl_debug = 1;
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display = malloc(sizeof *display);
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if (display == NULL)
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return NULL;
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display->loop = wl_event_loop_create();
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if (display->loop == NULL) {
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free(display);
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return NULL;
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}
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display->objects = wl_hash_table_create();
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if (display->objects == NULL) {
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free(display);
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return NULL;
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}
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wl_list_init(&display->frame_list);
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wl_list_init(&display->global_list);
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display->client_id_range = 256; /* Gah, arbitrary... */
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display->id = 1;
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display->base.interface = &wl_display_interface;
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display->base.implementation = (void (**)(void)) &display_interface;
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wl_display_add_object(display, &display->base);
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if (wl_display_add_global(display, &display->base, NULL)) {
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wl_event_loop_destroy(display->loop);
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free(display);
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return NULL;
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}
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return display;
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}
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WL_EXPORT void
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wl_display_add_object(struct wl_display *display, struct wl_object *object)
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{
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object->id = display->id++;
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wl_hash_table_insert(display->objects, object->id, object);
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}
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WL_EXPORT int
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wl_display_add_global(struct wl_display *display,
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struct wl_object *object, wl_client_connect_func_t func)
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{
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struct wl_global *global;
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global = malloc(sizeof *global);
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if (global == NULL)
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return -1;
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global->object = object;
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global->func = func;
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wl_list_insert(display->global_list.prev, &global->link);
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return 0;
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}
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WL_EXPORT void
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wl_display_post_frame(struct wl_display *display, uint32_t time)
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{
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struct wl_frame_listener *listener, *next;
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wl_list_for_each_safe(listener, next, &display->frame_list, link) {
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wl_client_post_event(listener->client, &display->base,
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WL_DISPLAY_FRAME, listener->key, time);
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wl_resource_destroy(&listener->resource, listener->client);
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}
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}
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WL_EXPORT struct wl_event_loop *
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wl_display_get_event_loop(struct wl_display *display)
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{
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return display->loop;
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}
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WL_EXPORT void
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wl_display_run(struct wl_display *display)
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{
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while (1)
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wl_event_loop_wait(display->loop);
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}
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static void
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socket_data(int fd, uint32_t mask, void *data)
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{
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struct wl_display *display = data;
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struct sockaddr_un name;
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socklen_t length;
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int client_fd;
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length = sizeof name;
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client_fd = accept (fd, (struct sockaddr *) &name, &length);
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if (client_fd < 0)
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fprintf(stderr, "failed to accept\n");
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wl_client_create(display, client_fd);
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}
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WL_EXPORT int
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wl_display_add_socket(struct wl_display *display,
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const char *name, size_t name_size)
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{
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struct sockaddr_un addr;
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int sock;
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socklen_t size;
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sock = socket(PF_LOCAL, SOCK_STREAM, 0);
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if (sock < 0)
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return -1;
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addr.sun_family = AF_LOCAL;
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memcpy(addr.sun_path, name, name_size);
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size = offsetof (struct sockaddr_un, sun_path) + name_size;
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if (bind(sock, (struct sockaddr *) &addr, size) < 0)
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return -1;
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if (listen(sock, 1) < 0)
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return -1;
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wl_event_loop_add_fd(display->loop, sock,
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WL_EVENT_READABLE,
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socket_data, display);
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return 0;
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}
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