static gboolean
httpd_client_in_event(G_GNUC_UNUSED GIOChannel *source, GIOCondition condition,
gpointer data)
{
struct httpd_client *client = data;
struct httpd_output *httpd = client->httpd;
bool ret;
g_mutex_lock(httpd->mutex);
if (condition == G_IO_IN && httpd_client_read(client)) {
ret = true;
} else {
httpd_client_close(client);
ret = false;
}
g_mutex_unlock(httpd->mutex);
return ret;
}
static gboolean
httpd_client_out_event(GIOChannel *source,
G_GNUC_UNUSED GIOCondition condition, gpointer data)
{
struct httpd_client *client = data;
struct httpd_output *httpd = client->httpd;
GError *error = NULL;
GIOStatus status;
gsize bytes_written;
gint bytes_to_write;
g_mutex_lock(httpd->mutex);
assert(condition == G_IO_OUT);
assert(client->state == RESPONSE);
if (client->write_source_id == 0) {
/* another thread has removed the event source while
this thread was waiting for httpd->mutex */
g_mutex_unlock(httpd->mutex);
return false;
}
if (client->current_page == NULL) {
client->current_page = g_queue_pop_head(client->pages);
client->current_position = 0;
}
bytes_to_write = bytes_left_till_metadata(client);
if (bytes_to_write == 0) {
gint metadata_to_write;
metadata_to_write = client->metadata_current_position;
if (!client->metadata_sent) {
status = write_page_to_channel(source,
client->metadata,
metadata_to_write,
&bytes_written, &error);
client->metadata_current_position += bytes_written;
if (client->metadata->size
- client->metadata_current_position == 0) {
client->metadata_fill = 0;
client->metadata_current_position = 0;
client->metadata_sent = true;
}
} else {
struct page *empty_meta;
guchar empty_data = 0;
empty_meta = page_new_copy(&empty_data, 1);
status = write_page_to_channel(source,
empty_meta,
metadata_to_write,
&bytes_written, &error);
client->metadata_current_position += bytes_written;
if (empty_meta->size
- client->metadata_current_position == 0) {
client->metadata_fill = 0;
client->metadata_current_position = 0;
}
}
bytes_written = 0;
} else {
status = write_n_bytes_to_channel(source, client->current_page,
client->current_position, bytes_to_write,
&bytes_written, &error);
}
switch (status) {
case G_IO_STATUS_NORMAL:
client->current_position += bytes_written;
assert(client->current_position <= client->current_page->size);
if (client->metadata_requested)
client->metadata_fill += bytes_written;
if (client->current_position >= client->current_page->size) {
page_unref(client->current_page);
client->current_page = NULL;
if (g_queue_is_empty(client->pages)) {
/* all pages are sent: remove the
event source */
client->write_source_id = 0;
g_mutex_unlock(httpd->mutex);
return false;
}
}
g_mutex_unlock(httpd->mutex);
return true;
case G_IO_STATUS_AGAIN:
g_mutex_unlock(httpd->mutex);
return true;
case G_IO_STATUS_EOF:
/* client has disconnected */
httpd_client_close(client);
g_mutex_unlock(httpd->mutex);
return false;
case G_IO_STATUS_ERROR:
/* I/O error */
g_warning("failed to write to client: %s", error->message);
g_error_free(error);
httpd_client_close(client);
g_mutex_unlock(httpd->mutex);
return false;
}
/* unreachable */
httpd_client_close(client);
g_mutex_unlock(httpd->mutex);
return false;
}
/**
* Sends the status line and response headers to the client.
*/
static bool
httpd_client_send_response(struct httpd_client *client)
{
char buffer[1024];
GError *error = NULL;
GIOStatus status;
gsize bytes_written;
assert(client != NULL);
assert(client->state == RESPONSE);
if (!client->metadata_requested) {
g_snprintf(buffer, sizeof(buffer),
"HTTP/1.1 200 OK\r\n"
"Content-Type: %s\r\n"
"Connection: close\r\n"
"Pragma: no-cache\r\n"
"Cache-Control: no-cache, no-store\r\n"
"\r\n",
client->httpd->content_type);
} else {
gchar *metadata_header;
metadata_header = icy_server_metadata_header(
client->httpd->name,
client->httpd->genre,
client->httpd->website,
client->httpd->content_type,
client->metaint);
g_strlcpy(buffer, metadata_header, sizeof(buffer));
g_free(metadata_header);
}
status = g_io_channel_write_chars(client->channel,
buffer, strlen(buffer),
&bytes_written, &error);
switch (status) {
case G_IO_STATUS_NORMAL:
case G_IO_STATUS_AGAIN:
return true;
case G_IO_STATUS_EOF:
/* client has disconnected */
httpd_client_close(client);
return false;
case G_IO_STATUS_ERROR:
/* I/O error */
g_warning("failed to write to client: %s", error->message);
g_error_free(error);
httpd_client_close(client);
return false;
}
/* unreachable */
httpd_client_close(client);
return false;
}
/**
* Sends the status line and response headers to the client.
*/
static bool
httpd_client_send_response(struct httpd_client *client)
{
char buffer[1024];
GError *error = NULL;
GIOStatus status;
gsize bytes_written;
assert(client != NULL);
assert(client->state == RESPONSE);
if (client->dlna_streaming_requested) {
g_snprintf(buffer, sizeof(buffer),
"HTTP/1.1 206 OK\r\n"
"Content-Type: %s\r\n"
"Content-Length: 10000\r\n"
"Content-RangeX: 0-1000000/1000000\r\n"
"transferMode.dlna.org: Streaming\r\n"
"Accept-Ranges: bytes\r\n"
"Connection: close\r\n"
"realTimeInfo.dlna.org: DLNA.ORG_TLAG=*\r\n"
"contentFeatures.dlna.org: DLNA.ORG_OP=01;DLNA.ORG_CI=0\r\n"
"\r\n",
client->httpd->content_type);
} else if (client->metadata_requested) {
gchar *metadata_header;
metadata_header = icy_server_metadata_header(
client->httpd->name,
client->httpd->genre,
client->httpd->website,
client->httpd->content_type,
client->metaint);
g_strlcpy(buffer, metadata_header, sizeof(buffer));
g_free(metadata_header);
} else { /* revert to a normal HTTP request */
g_snprintf(buffer, sizeof(buffer),
"HTTP/1.1 200 OK\r\n"
"Content-Type: %s\r\n"
"Connection: close\r\n"
"Pragma: no-cache\r\n"
"Cache-Control: no-cache, no-store\r\n"
"\r\n",
client->httpd->content_type);
}
status = g_io_channel_write_chars(client->channel,
buffer, strlen(buffer),
&bytes_written, &error);
switch (status) {
case G_IO_STATUS_NORMAL:
case G_IO_STATUS_AGAIN:
return true;
case G_IO_STATUS_EOF:
/* client has disconnected */
httpd_client_close(client);
return false;
case G_IO_STATUS_ERROR:
/* I/O error */
g_warning("failed to write to client: %s", error->message);
g_error_free(error);
httpd_client_close(client);
return false;
}
/* unreachable */
httpd_client_close(client);
return false;
}
