From 7d0cd8201453092479d76edcfa660c7eb1e462dc Mon Sep 17 00:00:00 2001
From: Charles Kerr <charles@transmissionbt.com>
Date: Sun, 29 Nov 2009 20:35:48 +0000
Subject: [PATCH] (trunk gtk) #2096 "magnet links" -- if a user (or, more
 likely, web browser) starts up a second copy of Transmission to add a magnet
 link via its command line, delegate that magnet link back to the
 already-running copy of Transmission via DBus.

---
 gtk/tr-core.c | 11 ++++++++---
 gtk/util.c    | 36 ++++++++++++++++++++++++------------
 2 files changed, 32 insertions(+), 15 deletions(-)

diff --git a/gtk/tr-core.c b/gtk/tr-core.c
index cd6f26a7e..723a630df 100644
--- a/gtk/tr-core.c
+++ b/gtk/tr-core.c
@@ -954,7 +954,7 @@ tr_core_add_ctor( TrCore * core, tr_ctor * ctor )
 /* invoked remotely via dbus. */
 gboolean
 tr_core_add_metainfo( TrCore      * core,
-                      const char  * base64_metainfo,
+                      const char  * payload,
                       gboolean    * setme_success,
                       GError     ** gerr UNUSED )
 {
@@ -964,7 +964,12 @@ tr_core_add_metainfo( TrCore      * core,
     {
         *setme_success = FALSE;
     }
-    else
+    else if( gtr_is_supported_url( payload ) || gtr_is_magnet_link( payload ) )
+    {
+        tr_core_add_from_url( core, payload );
+        *setme_success = TRUE;
+    }
+    else /* base64-encoded metainfo */
     {
         int err;
         int file_length;
@@ -975,7 +980,7 @@ tr_core_add_metainfo( TrCore      * core,
         ctor = tr_ctorNew( session );
         tr_core_apply_defaults( ctor );
 
-        file_contents = tr_base64_decode( base64_metainfo, -1, &file_length );
+        file_contents = tr_base64_decode( payload, -1, &file_length );
         err = tr_ctorSetMetainfo( ctor, (const uint8_t*)file_contents, file_length );
 
         if( !err )
diff --git a/gtk/util.c b/gtk/util.c
index 993eeab49..6767d4102 100644
--- a/gtk/util.c
+++ b/gtk/util.c
@@ -375,7 +375,7 @@ checkfilenames( int argc, char **argv )
                 ret = g_slist_prepend( ret, filename );
             else {
                 if( gtr_is_hex_hashcode( argv[i] ) )
-                    ret = g_slist_prepend( ret, g_strdup( argv[i] ) );
+                    ret = g_slist_prepend( ret, g_strdup_printf( "magnet:?xt=urn:btih:%s", argv[i] ) );
                 g_free( filename );
             }
         }
@@ -564,25 +564,37 @@ gtr_dbus_add_torrent( const char * filename )
 {
     /* FIXME: why is this static? */
     static gboolean success = FALSE;
-#ifdef HAVE_DBUS_GLIB
-    DBusGProxy * proxy = NULL;
-    GError * err = NULL;
-    DBusGConnection * conn;
-    char * file_contents;
-    gsize file_length;
 
+#ifdef HAVE_DBUS_GLIB
+    char * payload;
+    gsize file_length;
+    char * file_contents = NULL;
+
+    /* If it's a file, load its contents and send them over the wire...
+     * it might be a temporary file that's going to disappear. */
     if( g_file_get_contents( filename, &file_contents, &file_length, NULL ) )
+        payload = tr_base64_encode( file_contents, file_length, NULL );
+    else if( gtr_is_supported_url( filename ) || gtr_is_magnet_link( filename ) )
+        payload = tr_strdup( filename );
+    else
+        payload = NULL;
+
+    if( payload != NULL )
     {
-        char * b64 = tr_base64_encode( file_contents, file_length, NULL );
+        GError * err = NULL;
+        DBusGConnection * conn;
+        DBusGProxy * proxy = NULL;
+
         if(( conn = dbus_g_bus_get( DBUS_BUS_SESSION, &err )))
             proxy = dbus_g_proxy_new_for_name (conn, VALUE_SERVICE_NAME,
                                                      VALUE_SERVICE_OBJECT_PATH,
                                                      VALUE_SERVICE_INTERFACE );
         else if( err )
            g_message( "err: %s", err->message );
+
         if( proxy )
             dbus_g_proxy_call( proxy, "AddMetainfo", &err,
-                               G_TYPE_STRING, b64,
+                               G_TYPE_STRING, payload,
                                G_TYPE_INVALID,
                                G_TYPE_BOOLEAN, &success,
                                G_TYPE_INVALID );
@@ -594,10 +606,10 @@ gtr_dbus_add_torrent( const char * filename )
         if( conn )
             dbus_g_connection_unref( conn );
 
-        tr_free( b64 );
-        g_free( file_contents );
+        tr_free( payload );
     }
-    else g_message( "couldn't read %s", filename );
+
+    g_free( file_contents );
 
 #endif
     return success;