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#include "rodisc.h"
#include <gio/gio.h>
static GVolumeMonitor *monitor;
static bool guess_volume_type(GVolume *volume, const char **type)
{
GIcon *icon = g_volume_get_icon(volume);
g_return_val_if_fail(G_IS_THEMED_ICON(icon), false);
GThemedIcon *ticon = G_THEMED_ICON(icon);
const gchar * const * names = g_themed_icon_get_names(ticon);
for (const gchar * const * name = names; *name; ++name) {
if (g_str_has_prefix(*name, "media-optical")) {
if (g_str_has_prefix(*name, "media-optical-dvd")) {
*type = RODISC_TYPE_DVD;
} else if (g_str_has_prefix(*name, "media-optical-cd")) {
*type = RODISC_TYPE_CD;
} else {
*type = RODISC_TYPE_GENERIC;
}
return true;
}
}
return false;
}
static bool set_disc_attrs(RODisc *disc, GVolume *volume)
{
g_free(disc->label);
disc->label = g_volume_get_identifier(volume, G_VOLUME_IDENTIFIER_KIND_LABEL);
if (!disc->label || disc->label[0] == '\0') {
g_free(disc->label);
disc->label = g_volume_get_name(volume);
}
if (!disc->label || disc->label[0] == '\0') {
g_free(disc->label);
disc->label = g_strdup("Disc");
}
// Open file and seek to end to verify read permission and file size
GError *error = NULL;
GFileInputStream * stream = g_file_read(disc->file, NULL, &error);
if (!stream) {
g_warning("Could not open file '%s' for reading: %s",
disc->file_path, error->message);
g_error_free(error);
return false;
}
if (!g_seekable_seek(G_SEEKABLE(stream), 0, G_SEEK_END, NULL, &error)) {
g_warning("Could not seek in file '%s' for obtaining file size: %s",
disc->file_path, error->message);
g_error_free(error);
return false;
}
disc->size = g_seekable_tell(G_SEEKABLE(stream));
g_input_stream_close(G_INPUT_STREAM(stream), NULL, NULL);
g_object_unref(stream);
return true;
}
static void try_add_volume(GVolume *volume)
{
const char * type;
if (!guess_volume_type(volume, &type)) {
// Ignore non-optical device
return;
}
char *device_file_path = g_volume_get_identifier(volume, G_VOLUME_IDENTIFIER_KIND_UNIX_DEVICE);
if (!device_file_path) {
return;
}
RODisc *disc = rodisc_new();
char *basename = g_path_get_basename(device_file_path);
disc->id = device_file_path;
disc->uri = g_strconcat("/", basename, NULL);
disc->file = g_file_new_for_path(device_file_path);
disc->file_path = g_file_get_path(disc->file);
disc->type = type;
g_free(basename);
if (set_disc_attrs(disc, volume)) {
rodisc_export(disc);
} else {
rodisc_destroy(disc);
}
}
static void try_update_volume(GVolume *volume, RODisc *disc)
{
const char * type;
if (!guess_volume_type(volume, &type)) {
g_debug("no longer a optical media");
rodisc_remove(disc);
return;
}
disc->type = type;
if (set_disc_attrs(disc, volume)) {
rodisc_refresh(disc);
} else {
rodisc_remove(disc);
}
}
static void monitor_volume_added_cb(GVolumeMonitor *volume_monitor, GVolume *volume,
gpointer user_data)
{
char *device_file_path = g_volume_get_identifier(volume, G_VOLUME_IDENTIFIER_KIND_UNIX_DEVICE);
if (!device_file_path) {
return;
}
g_debug("Volume added: %s", device_file_path);
RODisc *disc = rodisc_lookup(device_file_path);
if (disc) {
g_warning("Device already added: %s", device_file_path);
} else {
try_add_volume(volume);
}
g_free(device_file_path);
}
static void monitor_volume_changed_cb(GVolumeMonitor *volume_monitor, GVolume *volume,
gpointer user_data)
{
char *device_file_path = g_volume_get_identifier(volume, G_VOLUME_IDENTIFIER_KIND_UNIX_DEVICE);
if (!device_file_path) {
return;
}
g_debug("Volume changed: %s", device_file_path);
RODisc *disc = rodisc_lookup(device_file_path);
if (disc) {
try_update_volume(volume, disc);
} else {
try_add_volume(volume);
}
g_free(device_file_path);
}
static void monitor_volume_removed_cb(GVolumeMonitor *volume_monitor, GVolume *volume,
gpointer user_data)
{
char *device_file_path = g_volume_get_identifier(volume, G_VOLUME_IDENTIFIER_KIND_UNIX_DEVICE);
if (!device_file_path) {
return;
}
g_debug("Volume removed: %s", device_file_path);
RODisc *disc = rodisc_lookup(device_file_path);
if (disc) {
rodisc_remove(disc);
}
g_free(device_file_path);
}
static void enumerate_volumes()
{
GList *volumes = g_volume_monitor_get_volumes(monitor);
for (GList *l = volumes; l != NULL; l = l->next) {
GVolume *volume = G_VOLUME(l->data);
try_add_volume(volume);
}
g_list_free_full(volumes, g_object_unref);
}
bool monitor_start()
{
monitor = g_volume_monitor_get();
if (!monitor) {
g_warning("Could not get volume monitor");
return false;
}
g_signal_connect(monitor, "volume-added",
G_CALLBACK(monitor_volume_added_cb), NULL);
g_signal_connect(monitor, "volume-changed",
G_CALLBACK(monitor_volume_changed_cb), NULL);
g_signal_connect(monitor, "volume-removed",
G_CALLBACK(monitor_volume_removed_cb), NULL);
enumerate_volumes();
return true;
}
void monitor_stop()
{
g_object_unref(monitor);
}
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