system: move system access packages

These packages loosely belong in the "system" package and "system" provides high level wrappers for all of them.

Signed-off-by: Ophestra <cat@gensokyo.uk>

1 files changed, 96 insertions, 0 deletions

diff --git a/system/wayland/wayland-client-helper.c b/system/wayland/wayland-client-helper.c
new file mode 100644
index 00000000..5a2c9a01
--- /dev/null
+++ b/system/wayland/wayland-client-helper.c
@@ -0,0 +1,96 @@
+#include "wayland-client-helper.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+#include "security-context-v1-protocol.h"
+#include <wayland-client.h>
+
+static void registry_handle_global(void *data, struct wl_registry *registry,
+                                   uint32_t name, const char *interface,
+                                   uint32_t version) {
+  struct wp_security_context_manager_v1 **out = data;
+
+  if (strcmp(interface, wp_security_context_manager_v1_interface.name) == 0)
+    *out = wl_registry_bind(registry, name,
+                            &wp_security_context_manager_v1_interface, 1);
+}
+
+static void registry_handle_global_remove(void *data,
+                                          struct wl_registry *registry,
+                                          uint32_t name) {} /* no-op */
+
+static const struct wl_registry_listener registry_listener = {
+    .global = registry_handle_global,
+    .global_remove = registry_handle_global_remove,
+};
+
+int32_t hakurei_bind_wayland_fd(char *socket_path, int fd, const char *app_id,
+                                const char *instance_id, int sync_fd) {
+  int32_t res = 0; /* refer to resErr for corresponding Go error */
+
+  struct wl_display *display;
+  display = wl_display_connect_to_fd(fd);
+  if (!display) {
+    res = 1;
+    goto out;
+  };
+
+  struct wl_registry *registry;
+  registry = wl_display_get_registry(display);
+
+  struct wp_security_context_manager_v1 *security_context_manager = NULL;
+  wl_registry_add_listener(registry, &registry_listener,
+                           &security_context_manager);
+  int ret;
+  ret = wl_display_roundtrip(display);
+  wl_registry_destroy(registry);
+  if (ret < 0)
+    goto out;
+
+  if (!security_context_manager) {
+    res = 2;
+    goto out;
+  }
+
+  int listen_fd = -1;
+  listen_fd = socket(AF_UNIX, SOCK_STREAM, 0);
+  if (listen_fd < 0)
+    goto out;
+
+  struct sockaddr_un sockaddr = {0};
+  sockaddr.sun_family = AF_UNIX;
+  snprintf(sockaddr.sun_path, sizeof(sockaddr.sun_path), "%s", socket_path);
+  if (bind(listen_fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)) != 0)
+    goto out;
+
+  if (listen(listen_fd, 0) != 0)
+    goto out;
+
+  struct wp_security_context_v1 *security_context;
+  security_context = wp_security_context_manager_v1_create_listener(
+      security_context_manager, listen_fd, sync_fd);
+  wp_security_context_v1_set_sandbox_engine(security_context, "app.hakurei");
+  wp_security_context_v1_set_app_id(security_context, app_id);
+  wp_security_context_v1_set_instance_id(security_context, instance_id);
+  wp_security_context_v1_commit(security_context);
+  wp_security_context_v1_destroy(security_context);
+  if (wl_display_roundtrip(display) < 0)
+    goto out;
+
+out:
+  if (listen_fd >= 0)
+    close(listen_fd);
+  if (security_context_manager)
+    wp_security_context_manager_v1_destroy(security_context_manager);
+  if (display)
+    wl_display_disconnect(display);
+
+  free((void *)socket_path);
+  free((void *)app_id);
+  free((void *)instance_id);
+  return res;
+}