static int
_uiCmdProxy_send_command(uint8_t cmd_type,
void* cmd_param,
uint32_t cmd_param_size)
{
UICmdHeader header;
int status = syncsocket_start_write(_uiCmdProxy.sync_writer);
if (!status) {
header.cmd_type = cmd_type;
header.cmd_param_size = cmd_param_size;
status = syncsocket_write(_uiCmdProxy.sync_writer, &header, sizeof(header),
_uiCmdProxy_get_timeout(sizeof(header)));
if (status > 0 && cmd_param != NULL && cmd_param_size > 0) {
status = syncsocket_write(_uiCmdProxy.sync_writer, cmd_param,
cmd_param_size,
_uiCmdProxy_get_timeout(cmd_param_size));
}
status = syncsocket_result(status);
syncsocket_stop_write(_uiCmdProxy.sync_writer);
}
if (status < 0) {
derror("Send UI command %d (%u bytes) has failed: %s\n",
cmd_type, cmd_param_size, errno_str);
}
return status;
}
static int
_userEventsProxy_send(uint8_t event, const void* event_param, size_t size)
{
int res;
UserEventHeader header;
header.event_type = event;
res = syncsocket_start_write(_userEventsProxy.sync_writer);
if (!res) {
res = syncsocket_write(_userEventsProxy.sync_writer, &header,
sizeof(header),
core_connection_get_timeout(sizeof(header)));
if (res > 0) {
res = syncsocket_write(_userEventsProxy.sync_writer, event_param,
size,
core_connection_get_timeout(sizeof(size)));
}
res = syncsocket_result(res);
syncsocket_stop_write(_userEventsProxy.sync_writer);
}
if (res < 0) {
derror("Unable to send user event: %s\n", errno_str);
}
return res;
}
/* Sends UI command to the core.
* Param:
* cmd_type, cmd_param, cmd_param_size - Define the command.
* Return:
* 0 On success, or < 0 on failure.
*/
static int
_coreCmdProxy_send_command(uint8_t cmd_type,
void* cmd_param,
uint32_t cmd_param_size)
{
int status;
UICmdHeader header;
// Prepare the command header.
header.cmd_type = cmd_type;
header.cmd_param_size = cmd_param_size;
status = syncsocket_start_write(_coreCmdProxy.sync_writer);
if (!status) {
// Send the header.
status = syncsocket_write(_coreCmdProxy.sync_writer, &header,
sizeof(header),
core_connection_get_timeout(sizeof(header)));
// If there is request data, send it too.
if (status > 0 && cmd_param != NULL && cmd_param_size > 0) {
status = syncsocket_write(_coreCmdProxy.sync_writer, cmd_param,
cmd_param_size,
core_connection_get_timeout(cmd_param_size));
}
status = syncsocket_result(status);
syncsocket_stop_write(_coreCmdProxy.sync_writer);
}
if (status < 0) {
derror("Unable to send UI control command %d (size %u): %s\n",
cmd_type, cmd_param_size, errno_str);
}
return status;
}
/* Sends command response back to the UI.
* Param:
* corecmd - CoreCmdImpl instance to use to send the response.
* resp - Response header.
* resp_data - Response data. Data size is defined by the header.
* Return:
* 0 on success, or < 0 on failure.
*/
static int
_coreCmdImpl_respond(CoreCmdImpl* corecmd, UICmdRespHeader* resp, void* resp_data)
{
int status = syncsocket_start_write(corecmd->sync_writer);
if (!status) {
// Write the header
status = syncsocket_write(corecmd->sync_writer, resp,
sizeof(UICmdRespHeader),
_coreCmdImpl_get_timeout(sizeof(UICmdRespHeader)));
// Write response data (if any).
if (status > 0 && resp_data != NULL && resp->resp_data_size != 0) {
status = syncsocket_write(corecmd->sync_writer, resp_data,
resp->resp_data_size,
_coreCmdImpl_get_timeout(resp->resp_data_size));
}
status = syncsocket_result(status);
syncsocket_stop_write(corecmd->sync_writer);
}
if (status < 0) {
derror("Core is unable to respond with %u bytes to the UI control command: %s\n",
resp->resp_data_size, errno_str);
}
return status;
}
ClientFramebuffer*
clientfb_create(SockAddress* console_socket,
const char* protocol,
QFrameBuffer* fb)
{
char* connect_message = NULL;
char switch_cmd[256];
// Connect to the framebuffer service.
_client_fb.core_connection = core_connection_create(console_socket);
if (_client_fb.core_connection == NULL) {
derror("Framebuffer client is unable to connect to the console: %s\n",
errno_str);
return NULL;
}
if (core_connection_open(_client_fb.core_connection)) {
core_connection_free(_client_fb.core_connection);
_client_fb.core_connection = NULL;
derror("Framebuffer client is unable to open the console: %s\n",
errno_str);
return NULL;
}
snprintf(switch_cmd, sizeof(switch_cmd), "framebuffer %s", protocol);
if (core_connection_switch_stream(_client_fb.core_connection, switch_cmd,
&connect_message)) {
derror("Unable to attach to the framebuffer %s: %s\n",
switch_cmd, connect_message ? connect_message : "");
if (connect_message != NULL) {
free(connect_message);
}
core_connection_close(_client_fb.core_connection);
core_connection_free(_client_fb.core_connection);
_client_fb.core_connection = NULL;
return NULL;
}
// We expect core framebuffer to return us bits per pixel property in
// the handshake message.
_client_fb.bits_per_pixel = 0;
if (connect_message != NULL) {
char* bpp = strstr(connect_message, "bitsperpixel=");
if (bpp != NULL) {
char* end;
bpp += strlen("bitsperpixel=");
end = strchr(bpp, ' ');
if (end == NULL) {
end = bpp + strlen(bpp);
}
_client_fb.bits_per_pixel = strtol(bpp, &end, 0);
}
}
if (!_client_fb.bits_per_pixel) {
derror("Unexpected core framebuffer reply: %s\n"
"Bits per pixel property is not there, or is invalid\n", connect_message);
core_connection_close(_client_fb.core_connection);
core_connection_free(_client_fb.core_connection);
_client_fb.core_connection = NULL;
return NULL;
}
// Now that we're connected lets initialize the descriptor.
_client_fb.fb = fb;
_client_fb.sock = core_connection_get_socket(_client_fb.core_connection);
_client_fb.fb_state = WAIT_HEADER;
_client_fb.reader_buffer = (uint8_t*)&_client_fb.update_header;
_client_fb.reader_offset = 0;
_client_fb.reader_bytes = sizeof(FBUpdateMessage);
if (connect_message != NULL) {
free(connect_message);
}
// At last setup read callback, and start receiving the updates.
if (qemu_set_fd_handler(_client_fb.sock, _clientfb_read_cb, NULL, &_client_fb)) {
derror("Unable to set up framebuffer read callback\n");
core_connection_close(_client_fb.core_connection);
core_connection_free(_client_fb.core_connection);
_client_fb.core_connection = NULL;
return NULL;
}
{
// Force the core to send us entire framebuffer now, when we're prepared
// to receive it.
FBRequestHeader hd;
SyncSocket* sk = syncsocket_init(_client_fb.sock);
hd.request_type = AFB_REQUEST_REFRESH;
syncsocket_start_write(sk);
syncsocket_write(sk, &hd, sizeof(hd), 500);
syncsocket_stop_write(sk);
syncsocket_free(sk);
}
fprintf(stdout, "Framebuffer %s is now attached to the core %s\n",
protocol, sock_address_to_string(console_socket));
return &_client_fb;
}