add option "localport" to exclude ports from auth

usefull if ympd listens on two ports: one (local) for intranet usage and
one for internet usage

contrib/init.debian

@@ -26,6 +26,7 @@ MPD_PORT=6600
 WEB_PORT=8080
 DIRBLE_API_TOKEN=2e223c9909593b94fc6577361a
 #DIGEST=--digest /path/to/htdigest
+#LOCALPORT=8080
 
 
 # Exit if the package is not installed
@@ -37,7 +38,7 @@ DIRBLE_API_TOKEN=2e223c9909593b94fc6577361a
 # Load the VERBOSE setting and other rcS variables
 [ -f /etc/default/rcS ] && . /etc/default/rcS
 
-DAEMON_OPT="--user $YMPD_USER --mpdpass '$MPD_PASSWORD' --webport $WEB_PORT --host $MPD_HOST --port $MPD_PORT --dirbletoken $DIRBLE_API_TOKEN $DIGEST"
+DAEMON_OPT="--user $YMPD_USER --mpdpass '$MPD_PASSWORD' --webport $WEB_PORT --host $MPD_HOST --port $MPD_PORT --dirbletoken $DIRBLE_API_TOKEN $DIGEST $LOCALPORT"
 
 do_start()
 {

contrib/ympd.default

@@ -5,3 +5,4 @@ WEB_PORT=8080
 YMPD_USER=nobody
 DIRBLE_API_TOKEN=2e223c9909593b94fc6577361a
 #DIGEST=--digest /path/to/htdigest
+#LOCALPORT=8080

contrib/ympd.service

@@ -10,8 +10,9 @@ Environment=WEB_PORT=8080
 Environment=YMPD_USER=nobody
 Environment=DIRBLE_API_TOKEN=2e223c9909593b94fc6577361a
 Environment=DIGEST=
+Environment=LOCALPORT=
 EnvironmentFile=/etc/default/ympd
-ExecStart=/usr/bin/ympd --user $YMPD_USER --webport $WEB_PORT --host $MPD_HOST --port $MPD_PORT --dirbletoken $DIRBLE_API_TOKEN $DIGEST
+ExecStart=/usr/bin/ympd --user $YMPD_USER --webport $WEB_PORT --host $MPD_HOST --port $MPD_PORT --dirbletoken $DIRBLE_API_TOKEN $DIGEST $LOCALPORT
 Type=simple
 
 [Install]

src/mpd_client.h

@@ -84,8 +84,10 @@ enum mpd_conn_states {
 
 struct t_mpd {
     int port;
+	int local_port;
     char host[128];
     char *password;
+	char *gpass;
 
     struct mpd_connection *conn;
     enum mpd_conn_states conn_state;

src/ympd.c

@@ -38,8 +38,6 @@ void bye()
     force_exit = 1;
 }
 
-char *gpass = NULL;
-
 static int server_callback(struct mg_connection *c, enum mg_event ev) {
     int result = MG_FALSE;
     FILE *fp = NULL;
@@ -63,10 +61,10 @@ static int server_callback(struct mg_connection *c, enum mg_event ev) {
 #endif
         case MG_AUTH:
             // no auth for websockets since mobile safari does not support it
-            if ( (gpass == NULL) || (c->is_websocket) )
+            if ( (mpd.gpass == NULL) || (c->is_websocket) || ((mpd.local_port > 0) && (c->local_port == mpd.local_port)) )
                 return MG_TRUE;
             else {
-                if ( (fp = fopen(gpass, "r")) != NULL ) {
+                if ( (fp = fopen(mpd.gpass, "r")) != NULL ) {
                     result = mg_authorize_digest(c, fp);
                     fclose(fp);
                 }
@@ -93,6 +91,8 @@ int main(int argc, char **argv)
 
     mg_set_option(server, "auth_domain", "ympd");
     mpd.port = 6600;
+    mpd.local_port = 0;
+	mpd.gpass = NULL;
     strcpy(mpd.host, "127.0.0.1");
 
     strcpy(dirble_api_token, "2e223c9909593b94fc6577361a");
@@ -101,6 +101,7 @@ int main(int argc, char **argv)
         {"digest",       required_argument, 0, 'D'},
         {"host",         required_argument, 0, 'h'},
         {"port",         required_argument, 0, 'p'},
+        {"localport",    required_argument, 0, 'l'},
         {"webport",      required_argument, 0, 'w'},
         {"dirbletoken",  required_argument, 0, 'd'},
         {"user",         required_argument, 0, 'u'},
@@ -110,11 +111,11 @@ int main(int argc, char **argv)
         {0,              0,                 0,  0 }
     };
 
-    while((n = getopt_long(argc, argv, "D:h:p:w:u:d:v:m",
+    while((n = getopt_long(argc, argv, "D:h:p:l:w:u:d:v:m",
                 long_options, &option_index)) != -1) {
         switch (n) {
             case 'D':
-                gpass = strdup(optarg);
+                mpd.gpass = strdup(optarg);
                 break;
             case 'h':
                 strncpy(mpd.host, optarg, sizeof(mpd.host));
@@ -122,6 +123,9 @@ int main(int argc, char **argv)
             case 'p':
                 mpd.port = atoi(optarg);
                 break;
+            case 'l':
+                mpd.local_port = atoi(optarg);
+                break;
             case 'w':
                 webport = strdup(optarg);
                 break;
@@ -148,6 +152,7 @@ int main(int argc, char **argv)
                         "                        \t(realm ympd) [no authorization]\n"
                         " -h, --host <host>\t\tconnect to mpd at host [localhost]\n"
                         " -p, --port <port>\t\tconnect to mpd at port [6600]\n"
+                        " -l, --localport <port>\t\tskip authorization for local port\n"
                         " -w, --webport [ip:]<port>\tlisten interface/port for webserver [8080]\n"
                         " -u, --user <username>\t\tdrop priviliges to user after socket bind\n"
                         " -d, --dirbletoken <apitoken>\tDirble API token\n"