static void logged_out_callback(sp_session *session) {
TRACE("logged_out_callback\n");
struct owl_state* state = sp_session_userdata(session);
state->state = OWL_STATE_INITIALIZED;
INFO("Logged out from Spotify\n");
respond_success(state->http_request);
}
//
// -- Spotify callbacks ---------------------------------------------------------------------------
//
static void logged_in_callback(sp_session *session, sp_error error) {
TRACE("logged_in_callback\n");
struct owl_state* state = sp_session_userdata(session);
if(error == SP_ERROR_OK) {
state->state = OWL_STATE_IDLE;
INFO("Logged in to Spotify!\n");
respond_success(state->http_request);
}
else {
state->state = OWL_STATE_INITIALIZED;
ERROR("Failed to login to Spotify: %s\n", sp_error_message(error));
respond_error(state->http_request, OWL_HTTP_ERROR_LOGIN, sp_error_message(error));
}
}
void handle_client(int fd, const char * userTest, const char * passTest) {
FILE * fp = fdopen(fd, "w+");
char * user, * pass, * path;
long long initial;
if (read_client_request(fp, &user, &pass, &path, &initial) < 0) {
return;
}
if (strcmp(user, userTest) != 0 || strcmp(pass, passTest) != 0) {
respond_error(fp, PROTOCOL_ERROR_AUTH, "Login incorrect.");
goto handleError;
}
#ifdef __linux__
struct stat64 info;
if (stat64(path, &info) < 0) {
#else
struct stat info
if (stat(path, &info) < 0) {
#endif
respond_error(fp, PROTOCOL_ERROR_NO_FILE, "Could not stat file.");
goto handleError;
}
if (S_ISDIR(info.st_mode)) {
respond_error(fp, PROTOCOL_ERROR_NOT_FILE, "Could not send directory.");
goto handleError;
}
if (initial > info.st_size) {
respond_error(fp, PROTOCOL_ERROR_INVALID_INITIAL, "Invalid initial offset.");
goto handleError;
}
#ifdef __linux__
FILE * readFile = fopen64(path, "r");
#else
FILE * readfile = fopen(path, "r");
#endif
if (!readFile) {
perror("fopen");
respond_error(fp, PROTOCOL_ERROR_INTERNAL, "fopen() failed");
goto handleError;
}
if (respond_success(fp, info.st_size - initial) < 0) {
fclose(readFile);
goto handleError;
}
// read file from start offset
fseek(readFile, initial, SEEK_SET);
char buff[512];
while (!feof(readFile)) {
int got = fread(buff, 1, 512, readFile);
if (got == 0) break;
if (fwrite(buff, 1, got, fp) != got) {
break;
}
}
fclose(readFile);
handleError:
fclose(fp);
free(user);
free(pass);
free(path);
return;
}
void sigchild_handler(int signal) {
int status;
wait(&status);
}
//
// Function called when a new HTTP request have been recieved.
//
static void http_handler(struct evhttp_request *request, void *userdata) {
struct owl_state* state = userdata;
// Setup general response headers
struct evkeyvalq *headers = evhttp_request_get_output_headers(request);
evhttp_add_header(headers, "Server", USER_AGENT);
// Get the requested URI
const char* uri = evhttp_request_get_uri(request);
const int http_method = evhttp_request_get_command(request);
if( http_method != EVHTTP_REQ_GET &&
http_method != EVHTTP_REQ_PUT &&
http_method != EVHTTP_REQ_POST) {
evhttp_send_error(request, 501, "Not Implemented");
return;
}
TRACE("Received HTTP request: %s (method %d)\n", uri, http_method);
// Keep the request for async usage
state->http_request = request;
//
// Retrieve application state (sync)
if(string_starts_with(uri, "/api/state") && http_method == EVHTTP_REQ_GET) {
state_action(state);
}
//
// Shutdown owl application (async)
else if(string_starts_with(uri, "/api/shutdown") && http_method == EVHTTP_REQ_GET) {
shutdown_action(state);
}
//
// Try to login to Spotify (async)
else if(string_starts_with(uri, "/api/login") && http_method == EVHTTP_REQ_GET) {
char* username = extract_uri_section(2, uri);
char* password = extract_uri_section(3, uri);
if(username != NULL && password != NULL) {
login_to_spotify_action(state, username, password);
}
else {
WARN("Could not extract username and password in order to login to Spotify!\n");
respond_error(request, OWL_HTTO_ERROR_NO_LOGIN_DETAILS, "No username or password given");
}
}
else if(string_starts_with(uri, "/api/login") && http_method == EVHTTP_REQ_POST) {
TRACE("POST LOGIN\n");
get_post_argument(request, "username");
evhttp_send_error(request, 501, "Not Implemented");
}
//
// Logout from spotify (async)
else if(string_starts_with(uri, "/api/logout") && http_method == EVHTTP_REQ_GET) {
if(state->state > OWL_STATE_LOGGING_IN && state->state < OWL_STATE_LOGGING_OUT)
logout_from_spotify_action(state);
else
respond_success(request);
}
//
// Clear the entire queue
else if(string_starts_with(uri, "/api/queue/clear") && http_method == EVHTTP_REQ_GET) {
if(state->state < OWL_STATE_IDLE || state->state > OWL_STATE_PLAYING) {
respond_error(request, OWL_HTTP_ERROR_NOT_LOGGED_IN, "Operation not allowed when not logged in");
}
else {
const int size = queue_size(state->spotify_state->queue);
for(int i = 0; i < size; i++) {
owl_track *track = pop_from_queue(state->spotify_state->queue);
free_track(track);
}
respond_success(request);
}
}
//
// Get the current playback queue (sync)
else if(string_starts_with(uri, "/api/queue") && http_method == EVHTTP_REQ_GET) {
if(state->state < OWL_STATE_IDLE || state->state > OWL_STATE_PLAYING) {
WARN("Operation not allowed at this state (%d)\n", state->state);
respond_error(request, OWL_HTTP_ERROR_NOT_LOGGED_IN, "Operation not allowed when not logged in");
}
else {
respond_with_queue(state->http_request, state->spotify_state->queue);
}
}
//
// Serve static file immediately
else {
// Create the buffer to retrn as content
struct evbuffer *content_buffer = evbuffer_new();
// If not a handler this is a static request
char *static_file = (char *) malloc(strlen(doc_root) + strlen(uri) + 1);
stpcpy(stpcpy(static_file, doc_root), uri);
TRACE("Looking for static file: %s\n", static_file);
bool file_exists = 1;
struct stat st;
if(stat(static_file, &st) == -1 || S_ISDIR(st.st_mode)) {
file_exists = 0;
evhttp_send_error(request, HTTP_NOTFOUND, "Not Found");
}
if(file_exists) {
const int file_size = st.st_size;
FILE *fp = fopen(static_file, "r");
const char* content_type = resolve_content_type(static_file);
evbuffer_add_file(content_buffer, fileno(fp), 0, file_size); // will close
TRACE("Resolving content type for filename: %s to: %s\n", static_file, content_type);
evhttp_add_header(headers, "Content-Type", content_type);
evhttp_send_reply(request, HTTP_OK, "OK", content_buffer);
}
free(static_file);
// Send the data
evhttp_send_reply(request, HTTP_OK, USER_AGENT, content_buffer);
// Free memrory
evbuffer_free(content_buffer);
}
return;
}
