plugins prototyping WIP

2 files changed, 198 insertions, 0 deletions

diff --git a/plugins/lastfm/Makefile.am b/plugins/lastfm/Makefile.am
new file mode 100644
index 00000000..7e26b863
--- /dev/null
+++ b/plugins/lastfm/Makefile.am
@@ -0,0 +1,7 @@
+lastfmdir = $(libdir)/$(PACKAGE)
+pkglib_LTLIBRARIES = lastfm.la
+lastfm_la_SOURCES = lastfm.c
+lastfm_la_LDFLAGS = -module
+
+lastfm_la_LIBADD = $(LDADD) $(LASTFM_DEPS_LIBS)
+AM_CFLAGS = $(LASTFM_DEPS_CFLAGS)
diff --git a/plugins/lastfm/lastfm.c b/plugins/lastfm/lastfm.c
new file mode 100644
index 00000000..4b6bc21e
--- /dev/null
+++ b/plugins/lastfm/lastfm.c
@@ -0,0 +1,191 @@
+/*
+    DeaDBeeF - ultimate music player for GNU/Linux systems with X11
+    Copyright (C) 2009  Alexey Yakovenko
+
+    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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <curl/curl.h>
+#include "../../deadbeef.h"
+
+static DB_misc_t plugin;
+static DB_functions_t *deadbeef;
+static char lastfm_login[50];
+static char lastfm_pass[50];
+
+#define SCROBBLER_URL "http://ws.audioscrobbler.com/2.0"
+#define LASTFM_API_KEY "6b33c8ae4d598a9aff8fe63e334e6e86"
+#define LASTFM_API_SECRET "a9f5e17e358377d96e96477d870b2b18"
+
+DB_plugin_t *
+lastfm_load (DB_functions_t *api) {
+    deadbeef = api;
+    return DB_PLUGIN (&plugin);
+}
+
+static char *lastfm_srv_res;
+static char lastfm_srv_size;
+static char lastfm_curl_err[CURL_ERROR_SIZE];
+
+static size_t
+lastfm_curl_res (void *ptr, size_t size, size_t nmemb, void *stream)
+{
+    int len = size * nmemb;
+    lastfm_srv_res = realloc (lastfm_srv_res, lastfm_srv_size + len + 1);
+    memcpy (lastfm_srv_res + lastfm_srv_size, ptr, len);
+    lastfm_srv_size += len;
+
+    char s[size*nmemb+1];
+    memcpy (s, ptr, size*nmemb);
+    s[size*nmemb] = 0;
+    printf ("%s\n", s);
+
+    return len;
+}
+
+int
+lastfm_auth (void) {
+    // auth
+    char msg[4096];
+    char sigstr[4096];
+    uint8_t sig[16];
+    snprintf (sigstr, sizeof (sigstr), "api_key%smethodauth.getToken%s", SCROBBLER_URL, LASTFM_API_KEY, LASTFM_API_SECRET);
+    deadbeef->md5 (sig, sigstr, strlen (sigstr));
+    deadbeef->md5_to_str (sigstr, sig);
+    snprintf (msg, sizeof (msg), "%s/?method=auth.getToken&api_key=%s&api_sig=%s", SCROBBLER_URL, LASTFM_API_KEY, sigstr);
+    printf ("sending request: %s\n", msg);
+    // init curl
+    CURL *curl;
+    curl = curl_easy_init ();
+    if (!curl) {
+        fprintf (stderr, "lastfm: failed to init curl\n");
+        return 0;
+    }
+    curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1);
+    curl_easy_setopt(curl, CURLOPT_URL, msg);
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, lastfm_curl_res);
+    memset(lastfm_curl_err, 0, sizeof(lastfm_curl_err));
+    curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, lastfm_curl_err);
+    curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
+    int status = curl_easy_perform(curl);
+    curl_easy_cleanup (curl);
+
+    if (!status) {
+        // parse output
+        if (strstr (lastfm_srv_res, "<lfm status=\"ok\">")) {
+            char *token = strstr (lastfm_srv_res, "<token>");
+            if (token) {
+                token += 7;
+                char *end = strstr (token, "</token>");
+                if (end) {
+                    *end = 0;
+                    printf ("token: %s\n", token);
+                }
+                else {
+                    printf ("no </token>\n");
+                }
+            }
+            else {
+                printf ("no <token>\n");
+            }
+        }
+        else {
+            printf ("not ok\n");
+        }
+    }
+
+    if (lastfm_srv_res) {
+        free (lastfm_srv_res);
+        lastfm_srv_res = NULL;
+    }
+}
+
+static int
+lastfm_frameupdate (int ev, uintptr_t data) {
+//    printf ("lastfm tick\n");
+    return 0;
+}
+
+static int
+lastfm_songchanged (int ev, uintptr_t data) {
+    printf ("song changed\n");
+    return 0;
+}
+
+static int
+lastfm_start (void) {
+    // subscribe to frameupdate event
+    deadbeef->ev_subscribe (DB_PLUGIN (&plugin), DB_EV_FRAMEUPDATE, lastfm_frameupdate, 0);
+    deadbeef->ev_subscribe (DB_PLUGIN (&plugin), DB_EV_SONGCHANGED, lastfm_songchanged, 0);
+    // load login/pass
+    char config[1024];
+    snprintf (config, 1024, "%s/.config/deadbeef/lastfm", getenv ("HOME"));
+    FILE *fp = fopen (config, "rt");
+    if (!fp) {
+        fprintf (stderr, "lastfm: failed open %s\n", config);
+        return -1;
+    }
+    if (!fgets (lastfm_login, 50, fp)) {
+        fprintf (stderr, "lastfm: failed to read login from %s\n", config);
+        fclose (fp);
+        return -1;
+    }
+    if (!fgets (lastfm_pass, 50, fp)) {
+        fprintf (stderr, "lastfm: failed to read pass from %s\n", config);
+        fclose (fp);
+        return -1;
+    }
+    fclose (fp);
+    // remove trailing garbage
+    int l;
+    char *p;
+    l = strlen (lastfm_login);
+    p = lastfm_login+l-1;
+    while (p >= lastfm_login && *p < 0x20) {
+        p--;
+    }
+    *p = 0;
+    l = strlen (lastfm_pass);
+    p = lastfm_pass+l-1;
+    while (p >= lastfm_login && *p < 0x20) {
+        p--;
+    }
+    *p = 0;
+    lastfm_auth ();
+
+    return 0;
+}
+
+static int
+lastfm_stop (void) {
+    deadbeef->ev_unsubscribe (DB_PLUGIN (&plugin), DB_EV_FRAMEUPDATE, lastfm_frameupdate, 0);
+    deadbeef->ev_unsubscribe (DB_PLUGIN (&plugin), DB_EV_SONGCHANGED, lastfm_songchanged, 0);
+    return 0;
+}
+
+// define plugin interface
+static DB_misc_t plugin = {
+    .plugin.type = DB_PLUGIN_MISC,
+    .plugin.name = "last.fm scrobbler",
+    .plugin.descr = "sends played songs information to your last.fm account",
+    .plugin.author = "Alexey Yakovenko",
+    .plugin.email = "waker@users.sourceforge.net",
+    .plugin.website = "http://deadbeef.sf.net",
+    .plugin.start = lastfm_start,
+    .plugin.stop = lastfm_stop
+};