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-rw-r--r--src/playlist/lastfm_playlist_plugin.c300
-rw-r--r--src/playlist/lastfm_playlist_plugin.h25
-rw-r--r--src/playlist_list.c5
3 files changed, 330 insertions, 0 deletions
diff --git a/src/playlist/lastfm_playlist_plugin.c b/src/playlist/lastfm_playlist_plugin.c
new file mode 100644
index 000000000..d7de25375
--- /dev/null
+++ b/src/playlist/lastfm_playlist_plugin.c
@@ -0,0 +1,300 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "playlist/lastfm_playlist_plugin.h"
+#include "playlist_plugin.h"
+#include "playlist_list.h"
+#include "conf.h"
+#include "uri.h"
+#include "song.h"
+#include "input_stream.h"
+
+#include <glib.h>
+
+#include <assert.h>
+#include <string.h>
+
+struct lastfm_playlist {
+ struct playlist_provider base;
+
+ struct input_stream is;
+
+ struct playlist_provider *xspf;
+};
+
+static struct {
+ char *user;
+ char *md5;
+} lastfm_config;
+
+static bool
+lastfm_init(const struct config_param *param)
+{
+ const char *user = config_get_block_string(param, "user", NULL);
+ const char *passwd = config_get_block_string(param, "password", NULL);
+
+ if (user == NULL || passwd == NULL) {
+ g_debug("disabling the last.fm playlist plugin "
+ "because account is not configured");
+ return false;
+ }
+
+#if GLIB_CHECK_VERSION(2,16,0)
+ lastfm_config.user = g_uri_escape_string(user, NULL, false);
+#else
+ lastfm_config.user = g_strdup(user);
+#endif
+
+#if GLIB_CHECK_VERSION(2,16,0)
+ if (strlen(passwd) != 32)
+ lastfm_config.md5 = g_compute_checksum_for_string(G_CHECKSUM_MD5,
+ passwd, strlen(passwd));
+ else
+#endif
+ lastfm_config.md5 = g_strdup(passwd);
+
+ return true;
+}
+
+static void
+lastfm_finish(void)
+{
+ g_free(lastfm_config.user);
+ g_free(lastfm_config.md5);
+}
+
+/**
+ * Simple data fetcher.
+ * @param url path or url of data to fetch.
+ * @return data fetched, or NULL on error. Must be freed with g_free.
+ */
+static char *
+lastfm_get(const char *url)
+{
+ struct input_stream input_stream;
+ bool success;
+ int ret;
+ char buffer[4096];
+ size_t length = 0, nbytes;
+
+ success = input_stream_open(&input_stream, url);
+ if (!success)
+ return NULL;
+
+ while (!input_stream.ready) {
+ ret = input_stream_buffer(&input_stream);
+ if (ret < 0) {
+ input_stream_close(&input_stream);
+ return NULL;
+ }
+ }
+
+ do {
+ nbytes = input_stream_read(&input_stream, buffer + length,
+ sizeof(buffer) - length);
+ if (nbytes == 0) {
+ if (input_stream_eof(&input_stream))
+ break;
+
+ /* I/O error */
+ input_stream_close(&input_stream);
+ return NULL;
+ }
+
+ length += nbytes;
+ } while (length < sizeof(buffer));
+
+ input_stream_close(&input_stream);
+ return g_strndup(buffer, length);
+}
+
+/**
+ * Ini-style value fetcher.
+ * @param response data through which to search.
+ * @param name name of value to search for.
+ * @return value for param name in param reponse or NULL on error. Free with g_free.
+ */
+static char *
+lastfm_find(const char *response, const char *name)
+{
+ size_t name_length = strlen(name);
+
+ while (true) {
+ const char *eol = strchr(response, '\n');
+ if (eol == NULL)
+ return NULL;
+
+ if (strncmp(response, name, name_length) == 0 &&
+ response[name_length] == '=') {
+ response += name_length + 1;
+ return g_strndup(response, eol - response);
+ }
+
+ response = eol + 1;
+ }
+}
+
+static struct playlist_provider *
+lastfm_open_uri(const char *uri)
+{
+ struct lastfm_playlist *playlist;
+ char *p, *q, *response, *session;
+ bool success;
+
+ /* handshake */
+
+ p = g_strconcat("http://ws.audioscrobbler.com/radio/handshake.php?"
+ "version=1.1.1&platform=linux&"
+ "username=", lastfm_config.user, "&"
+ "passwordmd5=", lastfm_config.md5, "&"
+ "debug=0&partner=", NULL);
+ response = lastfm_get(p);
+ g_free(p);
+ if (response == NULL)
+ return NULL;
+
+ /* extract session id from response */
+
+ session = lastfm_find(response, "session");
+ g_free(response);
+ if (session == NULL) {
+ g_warning("last.fm handshake failed");
+ return NULL;
+ }
+
+#if GLIB_CHECK_VERSION(2,16,0)
+ q = g_uri_escape_string(session, NULL, false);
+ g_free(session);
+ session = q;
+#endif
+
+ g_debug("session='%s'", session);
+
+ /* "adjust" last.fm radio */
+
+ if (strlen(uri) > 9) {
+ char *escaped_uri;
+
+#if GLIB_CHECK_VERSION(2,16,0)
+ escaped_uri = g_uri_escape_string(uri, NULL, false);
+#else
+ escaped_uri = g_strdup(uri);
+#endif
+
+ p = g_strconcat("http://ws.audioscrobbler.com/radio/adjust.php?"
+ "session=", session, "&url=", escaped_uri, "&debug=0",
+ NULL);
+ g_free(escaped_uri);
+
+ response = lastfm_get(p);
+ g_free(response);
+ g_free(p);
+
+ if (response == NULL) {
+ g_free(session);
+ return NULL;
+ }
+ }
+
+ /* create the playlist object */
+
+ playlist = g_new(struct lastfm_playlist, 1);
+ playlist_provider_init(&playlist->base, &lastfm_playlist_plugin);
+
+ /* open the last.fm playlist */
+
+ p = g_strconcat("http://ws.audioscrobbler.com/radio/xspf.php?"
+ "sk=", session, "&discovery=0&desktop=1.5.1.31879",
+ NULL);
+ g_free(session);
+
+ success = input_stream_open(&playlist->is, p);
+ g_free(p);
+
+ if (!success) {
+ g_warning("Failed to load XSPF playlist");
+ g_free(playlist);
+ return NULL;
+ }
+
+ while (!playlist->is.ready) {
+ int ret = input_stream_buffer(&playlist->is);
+ if (ret < 0) {
+ input_stream_close(&playlist->is);
+ g_free(playlist);
+ return NULL;
+ }
+
+ if (ret == 0)
+ /* nothing was buffered - wait */
+ g_usleep(10000);
+ }
+
+ /* last.fm does not send a MIME type, we have to fake it here
+ :-( */
+ g_free(playlist->is.mime);
+ playlist->is.mime = g_strdup("application/xspf+xml");
+
+ /* parse the XSPF playlist */
+
+ playlist->xspf = playlist_list_open_stream(&playlist->is, NULL);
+ if (playlist->xspf == NULL) {
+ input_stream_close(&playlist->is);
+ g_free(playlist);
+ g_warning("Failed to parse XSPF playlist");
+ return NULL;
+ }
+
+ return &playlist->base;
+}
+
+static void
+lastfm_close(struct playlist_provider *_playlist)
+{
+ struct lastfm_playlist *playlist = (struct lastfm_playlist *)_playlist;
+
+ playlist_plugin_close(playlist->xspf);
+ input_stream_close(&playlist->is);
+ g_free(playlist);
+}
+
+static struct song *
+lastfm_read(struct playlist_provider *_playlist)
+{
+ struct lastfm_playlist *playlist = (struct lastfm_playlist *)_playlist;
+
+ return playlist_plugin_read(playlist->xspf);
+}
+
+static const char *const lastfm_schemes[] = {
+ "lastfm",
+ NULL
+};
+
+const struct playlist_plugin lastfm_playlist_plugin = {
+ .name = "lastfm",
+
+ .init = lastfm_init,
+ .finish = lastfm_finish,
+ .open_uri = lastfm_open_uri,
+ .close = lastfm_close,
+ .read = lastfm_read,
+
+ .schemes = lastfm_schemes,
+};
diff --git a/src/playlist/lastfm_playlist_plugin.h b/src/playlist/lastfm_playlist_plugin.h
new file mode 100644
index 000000000..871a4a043
--- /dev/null
+++ b/src/playlist/lastfm_playlist_plugin.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_PLAYLIST_LASTFM_PLAYLIST_PLUGIN_H
+#define MPD_PLAYLIST_LASTFM_PLAYLIST_PLUGIN_H
+
+extern const struct playlist_plugin lastfm_playlist_plugin;
+
+#endif
diff --git a/src/playlist_list.c b/src/playlist_list.c
index 245fde1ee..85a10e9d9 100644
--- a/src/playlist_list.c
+++ b/src/playlist_list.c
@@ -21,10 +21,12 @@
#include "playlist_plugin.h"
#include "playlist/m3u_playlist_plugin.h"
#include "playlist/xspf_playlist_plugin.h"
+#include "playlist/lastfm_playlist_plugin.h"
#include "input_stream.h"
#include "uri.h"
#include "utils.h"
#include "conf.h"
+#include "config.h"
#include <glib.h>
@@ -34,6 +36,9 @@
static const struct playlist_plugin *const playlist_plugins[] = {
&m3u_playlist_plugin,
&xspf_playlist_plugin,
+#ifdef ENABLE_LASTFM
+ &lastfm_playlist_plugin,
+#endif
NULL
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 02:21:46 +0000