First commit

README.md

@@ -1,2 +1,27 @@
 # xdg-desktop-portal-wlr
+
 xdg-desktop-portal backend for wlroots
+
+## Building
+
+```sh
+meson build
+ninja -C build
+```
+
+## Installing
+
+```sh
+ninja -C build install
+```
+
+Make sure `XDG_CURRENT_DESKTOP=sway` is set.
+
+```sh
+/usr/lib/xdg-desktop-portal -r &
+xdg-desktop-portal-wlr
+```
+
+## License
+
+MIT

include/xdpw.h

@@ -0,0 +1,9 @@
+#ifndef XDPW_H
+#define XDPW_H
+
+#include <wayland-client.h>
+#include <systemd/sd-bus.h>
+
+int init_screenshot(sd_bus *bus);
+
+#endif

main.c

@@ -0,0 +1,48 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "xdpw.h"
+
+static const char service_name[] = "org.freedesktop.impl.portal.desktop.wlr";
+
+int main(int argc, char *argv[]) {
+	int ret = 0;
+
+	sd_bus *bus = NULL;
+	ret = sd_bus_open_user(&bus);
+	if (ret < 0) {
+		fprintf(stderr, "Failed to connect to user bus: %s\n", strerror(-ret));
+		goto error;
+	}
+
+	init_screenshot(bus);
+
+	ret = sd_bus_request_name(bus, service_name, 0);
+	if (ret < 0) {
+		fprintf(stderr, "Failed to acquire service name: %s\n", strerror(-ret));
+		goto error;
+	}
+
+	while (1) {
+		ret = sd_bus_process(bus, NULL);
+		if (ret < 0) {
+			fprintf(stderr, "sd_bus_process failed: %s\n", strerror(-ret));
+		} else if (ret > 0) {
+			// We processed a request, try to process another one, right-away
+			continue;
+		}
+
+		ret = sd_bus_wait(bus, (uint64_t)-1);
+		if (ret < 0) {
+			fprintf(stderr, "sd_bus_wait failed: %s\n", strerror(-ret));
+			goto error;
+		}
+	}
+
+	// TODO: cleanup
+
+	return EXIT_SUCCESS;
+
+error:
+	sd_bus_unref(bus);
+	return EXIT_FAILURE;
+}

meson.build

@@ -0,0 +1,41 @@
+project(
+	'xdg-desktop-portal-wlr',
+	'c',
+	version: '0.0.0',
+	license: 'MIT',
+	meson_version: '>=0.43.0',
+	default_options: [
+		'c_std=c11',
+		'warning_level=2',
+		'werror=true',
+	],
+)
+
+add_project_arguments('-Wno-unused-parameter', language: 'c')
+
+xdpw_inc = include_directories('include')
+
+wayland_client = dependency('wayland-client')
+wayland_protos = dependency('wayland-protocols', version: '>=1.14')
+systemd = dependency('libsystemd')
+
+# subdir('protocol')
+
+executable(
+	'xdg-desktop-portal-wlr',
+	files([
+		'main.c',
+		'screenshot.c',
+	]),
+	dependencies: [
+		wayland_client,
+		systemd,
+	],
+	include_directories: [xdpw_inc],
+	install: true,
+)
+
+install_data(
+	'wlr.portal',
+	install_dir: join_paths(get_option('datadir'), 'xdg-desktop-portal', 'portals'),
+)

screenshot.c

@@ -0,0 +1,26 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "xdpw.h"
+
+static const char object_path[] = "/org/freedesktop/portal/desktop";
+static const char interface_name[] = "org.freedesktop.impl.portal.Screenshot";
+
+static int method_screenshot(sd_bus_message *msg, void *data,
+		sd_bus_error *ret_error) {
+	// TODO
+	printf("Screenshot\n");
+	return 0;
+}
+
+static const sd_bus_vtable screenshot_vtable[] = {
+	SD_BUS_VTABLE_START(0),
+	SD_BUS_METHOD("Screenshot", "ossa{sv}", "ua{sv}", method_screenshot, SD_BUS_VTABLE_UNPRIVILEGED),
+	SD_BUS_VTABLE_END
+};
+
+int init_screenshot(sd_bus *bus) {
+	// TODO: cleanup
+	sd_bus_slot *slot = NULL;
+	return sd_bus_add_object_vtable(bus, &slot, object_path, interface_name,
+		screenshot_vtable, NULL);
+}

wlr.portal

@@ -0,0 +1,4 @@
+[portal]
+DBusName=org.freedesktop.impl.portal.desktop.wlr
+Interfaces=org.freedesktop.impl.portal.Screenshot;org.freedesktop.impl.portal.ScreenCast;
+UseIn=sway