449 lines
11 KiB
C++
449 lines
11 KiB
C++
#include "WindowServer.h"
|
|
|
|
#include <BAN/Debug.h>
|
|
#include <BAN/ScopeGuard.h>
|
|
|
|
#include <LibGUI/Window.h>
|
|
#include <LibInput/KeyboardLayout.h>
|
|
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <sys/banan-os.h>
|
|
#include <sys/epoll.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/un.h>
|
|
#include <unistd.h>
|
|
|
|
struct Config
|
|
{
|
|
BAN::UniqPtr<LibImage::Image> background_image;
|
|
int32_t corner_radius = 0;
|
|
};
|
|
|
|
BAN::Optional<BAN::String> file_read_line(FILE* file)
|
|
{
|
|
BAN::String line;
|
|
|
|
char buffer[128];
|
|
while (fgets(buffer, sizeof(buffer), file))
|
|
{
|
|
MUST(line.append(buffer));
|
|
if (line.back() == '\n')
|
|
{
|
|
line.pop_back();
|
|
return BAN::move(line);
|
|
}
|
|
}
|
|
|
|
if (line.empty())
|
|
return {};
|
|
return BAN::move(line);
|
|
}
|
|
|
|
Config parse_config()
|
|
{
|
|
Config config;
|
|
|
|
auto home_env = getenv("HOME");
|
|
if (!home_env)
|
|
{
|
|
dprintln("HOME environment variable not set");
|
|
return config;
|
|
}
|
|
|
|
auto config_path = MUST(BAN::String::formatted("{}/.config/WindowServer.conf", home_env));
|
|
FILE* fconfig = fopen(config_path.data(), "r");
|
|
if (!fconfig)
|
|
{
|
|
dprintln("Could not open '{}'", config_path);
|
|
return config;
|
|
}
|
|
|
|
BAN::ScopeGuard _([fconfig] { fclose(fconfig); });
|
|
|
|
while (true)
|
|
{
|
|
auto line = file_read_line(fconfig);
|
|
if (!line.has_value())
|
|
break;
|
|
if (line->empty())
|
|
continue;
|
|
|
|
auto parts = MUST(line->sv().split('='));
|
|
if (parts.size() != 2)
|
|
{
|
|
dwarnln("Invalid config line: {}", line.value());
|
|
break;
|
|
}
|
|
|
|
auto variable = parts[0];
|
|
auto value = parts[1];
|
|
|
|
if (variable == "bg"_sv)
|
|
{
|
|
auto image = LibImage::Image::load_from_file(value);
|
|
if (image.is_error())
|
|
dwarnln("Could not load image: {}", image.error());
|
|
else
|
|
config.background_image = image.release_value();
|
|
}
|
|
else if (variable == "corner-radius"_sv)
|
|
{
|
|
char* endptr = nullptr;
|
|
long long corner_radius = strtoll(value.data(), &endptr, 0);
|
|
if (corner_radius < 0 || corner_radius == LONG_MAX || corner_radius >= INT32_MAX)
|
|
dwarnln("invalid corner-radius: '{}'", value);
|
|
else
|
|
config.corner_radius = corner_radius;
|
|
}
|
|
else
|
|
{
|
|
dwarnln("Unknown config variable: {}", variable);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return config;
|
|
}
|
|
|
|
int open_server_fd()
|
|
{
|
|
struct stat st;
|
|
if (stat(LibGUI::s_window_server_socket.data(), &st) != -1)
|
|
unlink(LibGUI::s_window_server_socket.data());
|
|
|
|
int server_fd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
|
|
if (server_fd == -1)
|
|
{
|
|
perror("socket");
|
|
exit(1);
|
|
}
|
|
|
|
sockaddr_un server_addr;
|
|
server_addr.sun_family = AF_UNIX;
|
|
strcpy(server_addr.sun_path, LibGUI::s_window_server_socket.data());
|
|
if (bind(server_fd, (sockaddr*)&server_addr, sizeof(server_addr)) == -1)
|
|
{
|
|
perror("bind");
|
|
exit(1);
|
|
}
|
|
|
|
if (chmod(LibGUI::s_window_server_socket.data(), 0777) == -1)
|
|
{
|
|
perror("chmod");
|
|
exit(1);
|
|
}
|
|
|
|
if (listen(server_fd, SOMAXCONN) == -1)
|
|
{
|
|
perror("listen");
|
|
exit(1);
|
|
}
|
|
|
|
return server_fd;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
srand(time(nullptr));
|
|
|
|
int server_fd = open_server_fd();
|
|
auto framebuffer = open_framebuffer();
|
|
if (framebuffer.bpp != 32)
|
|
{
|
|
dwarnln("Window server requires 32 bpp");
|
|
return 1;
|
|
}
|
|
|
|
int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
|
|
if (epoll_fd == -1)
|
|
{
|
|
dwarnln("epoll_create1: {}", strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
{
|
|
epoll_event event {
|
|
.events = EPOLLIN,
|
|
.data = { .fd = server_fd },
|
|
};
|
|
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, server_fd, &event) == -1)
|
|
{
|
|
dwarnln("epoll_ctl server: {}", strerror(errno));
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (tty_ctrl(STDIN_FILENO, TTY_CMD_UNSET, TTY_FLAG_ENABLE_INPUT) == -1)
|
|
{
|
|
dwarnln("tty_ctrl: {}", strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
atexit([]() { tty_ctrl(STDIN_FILENO, TTY_CMD_SET, TTY_FLAG_ENABLE_INPUT); });
|
|
|
|
constexpr int non_terminating_signals[] {
|
|
SIGCHLD,
|
|
SIGCONT,
|
|
SIGSTOP,
|
|
SIGTSTP,
|
|
SIGTTIN,
|
|
SIGTTOU,
|
|
};
|
|
constexpr int ignored_signals[] {
|
|
SIGPIPE,
|
|
};
|
|
for (int sig = _SIGMIN; sig <= _SIGMAX; sig++)
|
|
signal(sig, exit);
|
|
for (int sig : non_terminating_signals)
|
|
signal(sig, SIG_DFL);
|
|
for (int sig : ignored_signals)
|
|
signal(sig, SIG_IGN);
|
|
|
|
MUST(LibInput::KeyboardLayout::initialize());
|
|
MUST(LibInput::KeyboardLayout::get().load_from_file("/usr/share/keymaps/us.keymap"_sv));
|
|
|
|
int keyboard_fd = open("/dev/keyboard", O_RDONLY | O_CLOEXEC);
|
|
if (keyboard_fd == -1)
|
|
dwarnln("open keyboard: {}", strerror(errno));
|
|
else
|
|
{
|
|
epoll_event event {
|
|
.events = EPOLLIN,
|
|
.data = { .fd = keyboard_fd },
|
|
};
|
|
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, keyboard_fd, &event) == -1)
|
|
{
|
|
dwarnln("epoll_ctl keyboard: {}", strerror(errno));
|
|
close(keyboard_fd);
|
|
keyboard_fd = -1;
|
|
}
|
|
}
|
|
|
|
int mouse_fd = open("/dev/mouse", O_RDONLY | O_CLOEXEC);
|
|
if (mouse_fd == -1)
|
|
dwarnln("open mouse: {}", strerror(errno));
|
|
else
|
|
{
|
|
epoll_event event {
|
|
.events = EPOLLIN,
|
|
.data = { .fd = mouse_fd },
|
|
};
|
|
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, mouse_fd, &event) == -1)
|
|
{
|
|
dwarnln("epoll_ctl mouse: {}", strerror(errno));
|
|
close(mouse_fd);
|
|
mouse_fd = -1;
|
|
}
|
|
}
|
|
|
|
dprintln("Window server started");
|
|
|
|
auto config = parse_config();
|
|
|
|
WindowServer window_server(framebuffer, config.corner_radius);
|
|
if (config.background_image)
|
|
if (auto ret = window_server.set_background_image(BAN::move(config.background_image)); ret.is_error())
|
|
dwarnln("Could not set background image: {}", ret.error());
|
|
|
|
const auto get_current_us =
|
|
[]() -> uint64_t
|
|
{
|
|
timespec current_ts;
|
|
clock_gettime(CLOCK_MONOTONIC, ¤t_ts);
|
|
return (current_ts.tv_sec * 1'000'000) + (current_ts.tv_nsec / 1000);
|
|
};
|
|
|
|
constexpr uint64_t sync_interval_us = 1'000'000 / 60;
|
|
uint64_t last_sync_us = get_current_us() - sync_interval_us;
|
|
while (!window_server.is_stopped())
|
|
{
|
|
const auto current_us = get_current_us();
|
|
if (current_us - last_sync_us > sync_interval_us)
|
|
{
|
|
window_server.sync();
|
|
last_sync_us += sync_interval_us;
|
|
}
|
|
|
|
timespec timeout = {};
|
|
if (auto current_us = get_current_us(); current_us - last_sync_us < sync_interval_us)
|
|
timeout.tv_nsec = (sync_interval_us - (current_us - last_sync_us)) * 1000;
|
|
|
|
epoll_event events[16];
|
|
int epoll_events = epoll_pwait2(epoll_fd, events, 16, &timeout, nullptr);
|
|
if (epoll_events == -1 && errno != EINTR)
|
|
{
|
|
dwarnln("epoll_pwait2: {}", strerror(errno));
|
|
break;
|
|
}
|
|
|
|
for (int i = 0; i < epoll_events; i++)
|
|
{
|
|
if (events[i].data.fd == server_fd)
|
|
{
|
|
ASSERT(events[i].events & EPOLLIN);
|
|
|
|
int window_fd = accept4(server_fd, nullptr, nullptr, SOCK_NONBLOCK | SOCK_CLOEXEC);
|
|
if (window_fd == -1)
|
|
{
|
|
dwarnln("accept: {}", strerror(errno));
|
|
continue;
|
|
}
|
|
|
|
epoll_event event {
|
|
.events = EPOLLIN,
|
|
.data = { .fd = window_fd },
|
|
};
|
|
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, window_fd, &event) == -1)
|
|
{
|
|
dwarnln("epoll_ctl: {}", strerror(errno));
|
|
close(window_fd);
|
|
continue;
|
|
}
|
|
|
|
window_server.add_client_fd(window_fd);
|
|
continue;
|
|
}
|
|
|
|
if (events[i].data.fd == keyboard_fd)
|
|
{
|
|
ASSERT(events[i].events & EPOLLIN);
|
|
|
|
LibInput::RawKeyEvent event;
|
|
if (read(keyboard_fd, &event, sizeof(event)) == -1)
|
|
{
|
|
dwarnln("read keyboard: {}", strerror(errno));
|
|
continue;
|
|
}
|
|
window_server.on_key_event(LibInput::KeyboardLayout::get().key_event_from_raw(event));
|
|
continue;
|
|
}
|
|
|
|
if (events[i].data.fd == mouse_fd)
|
|
{
|
|
ASSERT(events[i].events & EPOLLIN);
|
|
|
|
LibInput::MouseEvent event;
|
|
if (read(mouse_fd, &event, sizeof(event)) == -1)
|
|
{
|
|
dwarnln("read mouse: {}", strerror(errno));
|
|
continue;
|
|
}
|
|
switch (event.type)
|
|
{
|
|
case LibInput::MouseEventType::MouseButtonEvent:
|
|
window_server.on_mouse_button(event.button_event);
|
|
break;
|
|
case LibInput::MouseEventType::MouseMoveEvent:
|
|
window_server.on_mouse_move(event.move_event);
|
|
break;
|
|
case LibInput::MouseEventType::MouseMoveAbsEvent:
|
|
window_server.on_mouse_move_abs(event.move_abs_event);
|
|
break;
|
|
case LibInput::MouseEventType::MouseScrollEvent:
|
|
window_server.on_mouse_scroll(event.scroll_event);
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
const int client_fd = events[i].data.fd;
|
|
if (events[i].events & EPOLLHUP)
|
|
{
|
|
epoll_ctl(epoll_fd, EPOLL_CTL_DEL, client_fd, nullptr);
|
|
window_server.remove_client_fd(client_fd);
|
|
continue;
|
|
}
|
|
|
|
ASSERT(events[i].events & EPOLLIN);
|
|
|
|
auto& client_data = window_server.get_client_data(client_fd);
|
|
|
|
if (client_data.packet_buffer.empty())
|
|
{
|
|
uint32_t packet_size;
|
|
const ssize_t nrecv = recv(client_fd, &packet_size, sizeof(uint32_t), 0);
|
|
if (nrecv < 0)
|
|
dwarnln("recv 1: {}", strerror(errno));
|
|
if (nrecv > 0 && nrecv != sizeof(uint32_t))
|
|
dwarnln("could not read packet size with a single recv call, closing connection...");
|
|
if (nrecv != sizeof(uint32_t))
|
|
{
|
|
epoll_ctl(epoll_fd, EPOLL_CTL_DEL, client_fd, nullptr);
|
|
window_server.remove_client_fd(client_fd);
|
|
break;
|
|
}
|
|
|
|
if (packet_size < 4)
|
|
{
|
|
dwarnln("client sent invalid packet, closing connection...");
|
|
epoll_ctl(epoll_fd, EPOLL_CTL_DEL, client_fd, nullptr);
|
|
window_server.remove_client_fd(client_fd);
|
|
break;
|
|
}
|
|
|
|
// this is a bit harsh, but i don't want to work on skipping streaming packets
|
|
if (client_data.packet_buffer.resize(packet_size).is_error())
|
|
{
|
|
dwarnln("could not allocate memory for client packet, closing connection...");
|
|
epoll_ctl(epoll_fd, EPOLL_CTL_DEL, client_fd, nullptr);
|
|
window_server.remove_client_fd(client_fd);
|
|
break;
|
|
}
|
|
|
|
client_data.packet_buffer_nread = 0;
|
|
continue;
|
|
}
|
|
|
|
const ssize_t nrecv = recv(
|
|
client_fd,
|
|
client_data.packet_buffer.data() + client_data.packet_buffer_nread,
|
|
client_data.packet_buffer.size() - client_data.packet_buffer_nread,
|
|
0
|
|
);
|
|
if (nrecv < 0)
|
|
dwarnln("recv 2: {}", strerror(errno));
|
|
if (nrecv <= 0)
|
|
{
|
|
epoll_ctl(epoll_fd, EPOLL_CTL_DEL, client_fd, nullptr);
|
|
window_server.remove_client_fd(client_fd);
|
|
break;
|
|
}
|
|
|
|
client_data.packet_buffer_nread += nrecv;
|
|
if (client_data.packet_buffer_nread < client_data.packet_buffer.size())
|
|
continue;
|
|
|
|
ASSERT(client_data.packet_buffer.size() >= sizeof(uint32_t));
|
|
|
|
switch (*reinterpret_cast<LibGUI::PacketType*>(client_data.packet_buffer.data()))
|
|
{
|
|
#define WINDOW_PACKET_CASE(enum, function) \
|
|
case LibGUI::PacketType::enum: \
|
|
if (auto ret = LibGUI::WindowPacket::enum::deserialize(client_data.packet_buffer.span()); !ret.is_error()) \
|
|
window_server.function(client_fd, ret.release_value()); \
|
|
break
|
|
WINDOW_PACKET_CASE(WindowCreate, on_window_create);
|
|
WINDOW_PACKET_CASE(WindowInvalidate, on_window_invalidate);
|
|
WINDOW_PACKET_CASE(WindowSetPosition, on_window_set_position);
|
|
WINDOW_PACKET_CASE(WindowSetAttributes, on_window_set_attributes);
|
|
WINDOW_PACKET_CASE(WindowSetMouseRelative, on_window_set_mouse_relative);
|
|
WINDOW_PACKET_CASE(WindowSetSize, on_window_set_size);
|
|
WINDOW_PACKET_CASE(WindowSetMinSize, on_window_set_min_size);
|
|
WINDOW_PACKET_CASE(WindowSetMaxSize, on_window_set_max_size);
|
|
WINDOW_PACKET_CASE(WindowSetFullscreen, on_window_set_fullscreen);
|
|
WINDOW_PACKET_CASE(WindowSetTitle, on_window_set_title);
|
|
WINDOW_PACKET_CASE(WindowSetCursor, on_window_set_cursor);
|
|
#undef WINDOW_PACKET_CASE
|
|
default:
|
|
dprintln("unhandled packet type: {}", *reinterpret_cast<uint32_t*>(client_data.packet_buffer.data()));
|
|
}
|
|
|
|
client_data.packet_buffer.clear();
|
|
client_data.packet_buffer_nread = 0;
|
|
}
|
|
}
|
|
}
|