commit 5be58b42bd9c401324849d958d6beb6871bcb55d
Author: erik <erik@37441250-4157-47a9-a2c9-f9fe3212d2d3>
Date:   Wed Jun 6 16:23:41 2007 +0000

    Added Songbird patches to libgpod.
    
    
    git-svn-id: http://publicsvn.songbirdnest.com/vendor/trunk/dependencies/vendor/libgpod@4910 37441250-4157-47a9-a2c9-f9fe3212d2d3

diff --git a/src/itdb.h b/src/itdb.h
index 422dc95..e5e0c47 100644
--- a/src/itdb.h
+++ b/src/itdb.h
@@ -66,6 +66,7 @@ typedef struct _Itdb_Playlist Itdb_Playlist;
 typedef struct _Itdb_PhotoAlbum Itdb_PhotoAlbum;
 typedef struct _Itdb_Track Itdb_Track;
 typedef struct _Itdb_IpodInfo Itdb_IpodInfo;
+typedef struct _Itdb_Prefs Itdb_Prefs;
 
 
 /* ------------------------------------------------------------ *\
@@ -799,6 +800,56 @@ struct _Itdb_Track
 /* (gtkpod note: don't forget to add fields read from the file to
  * copy_new_info() in file.c!) */
 
+/* default iPod preferences contents */
+const static gchar default_prefs[] =
+{
+    0x66, 0x72, 0x70, 0x64, 0x01, 0x00, 0x03, 0x00,
+    0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x6e, 0x39, 0x0e, 0x70,
+    0x8f, 0xdc, 0x6f, 0x76, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x01, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x6f, 0x39, 0x0e, 0x70, 0x8f, 0xdc, 0x6f, 0x76,
+    0x02, 0x00, 0x00, 0x00, 0x6e, 0x39, 0x0e, 0x70,
+    0x8f, 0xdc, 0x6f, 0x76, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00
+};
+
+struct _Itdb_Prefs
+{
+    gchar *contents;            /* preferences file contents */
+    gint length;                /* contents length */
+    gboolean valid_file;        /* true if valid preferences file read */
+    guint8 ipod_set_up;         /* Offset 0x08: 0x00 iPod has not been set up
+                                                !0x00 iPod has been set up */
+    guint8 music_mgmt_type;     /* Offset 0x0A: 0x00 manual management
+                                                !0x00 auto update */
+    guint8 music_update_type;   /* Offset 0x0B: 0x01 update all
+                                                0x02 update playlists */
+    guint64 music_lib_link_id;  /* Offset 0x0C: ID of music library linked to
+                                                iPod */
+};
+
 
 /* ------------------------------------------------------------ *\
  *
@@ -1003,6 +1057,17 @@ gboolean itdb_init_ipod (const gchar *mountpoint,
 			 const gchar *ipod_name,
 			 GError **error);
 
+/* prefs functions */
+Itdb_Prefs *itdb_prefs_new (void);
+void itdb_prefs_free (Itdb_Prefs *prefs);
+Itdb_Prefs *itdb_prefs_parse(Itdb_Device *device, GError **error);
+gboolean itdb_prefs_write(Itdb_Device *device, Itdb_Prefs *prefs,
+			  GError **error);
+gboolean itdb_update_playlists_read(Itdb_Device *device, guint64 **playlists,
+				    gint *num_playlists, GError **error);
+gboolean itdb_update_playlists_write(Itdb_Device *device, guint64 *playlists,
+				     gint num_playlists, GError **error);
+
 G_END_DECLS
 
 #endif
diff --git a/src/itdb_itunesdb.c b/src/itdb_itunesdb.c
index f95d4ef..d7f3ea7 100644
--- a/src/itdb_itunesdb.c
+++ b/src/itdb_itunesdb.c
@@ -5927,3 +5951,307 @@ static gboolean itdb_create_directories (Itdb_Device *device, GError **error)
     g_free (podpath);
     return result;
 }
+
+/*zzz should put in itdb_prefs.c */
+
+/**
+ * itdb_prefs_new:
+ *
+ * Creates a new Itdb_Prefs.
+ *
+ * Return value: a newly created Itdb_Prefs to be freed with itdb_prefs_free()
+ * when it's no longer needed
+ **/
+Itdb_Prefs *itdb_prefs_new (void)
+{
+    Itdb_Prefs *prefs = g_new0 (Itdb_Prefs, 1);
+    prefs->contents = NULL;
+    prefs->valid_file = FALSE;
+
+    return prefs;
+}
+
+/** 
+ * itdb_prefs_free:
+ * @prefs: an #Itdb_Prefs
+ *
+ * Free the memory taken by @prefs. 
+ **/
+void itdb_prefs_free (Itdb_Prefs *prefs)
+{
+    if (prefs)
+    {
+	if (prefs->contents)
+	    g_free(prefs->contents);
+	g_free (prefs);
+    }
+}
+
+/**
+ * itdb_prefs_parse:
+ * @device: an #Itdb_Device
+ * @error: return location for a #GError or NULL
+ *
+ * Parse the Itdb_Prefs of the iPod device @device
+ *
+ * Return value: a newly allocated #Itdb_Prefs struct holding the preference
+ * settings of the iPod @device, NULL if the preferences file could not be read.
+ * If non-NULL, the #Itdb_Prefs is to be freed with itdb_prefs_free() when it's
+ * no longer needed
+ **/
+Itdb_Prefs *itdb_prefs_parse(Itdb_Device *device, GError **error)
+{
+    gchar *prefs_filename;
+    gchar *itunes_dir;
+    Itdb_Prefs *prefs = NULL;
+    const gchar *p_prefspath[] = {"iTunesPrefs", NULL};
+    gchar *contents = NULL;
+    gsize length = 0;
+
+    itunes_dir = itdb_get_itunes_dir (device->mountpoint);
+
+    if (!itunes_dir)
+    {
+	error_no_itunes_dir (device->mountpoint, error);
+	return NULL;
+    }
+
+    prefs = itdb_prefs_new ();
+
+    prefs_filename = itdb_resolve_path(itunes_dir, p_prefspath);
+    if (prefs_filename)
+    {
+	if (g_file_get_contents (prefs_filename, &contents, &length, error))
+            prefs->valid_file = TRUE;
+        g_free (prefs_filename);
+    }
+
+    /* if a complete, valid preferences file is not available, 
+     * fill preferences contents in with default values */
+    if (length < sizeof (default_prefs))
+    {
+        prefs->contents = g_malloc (sizeof (default_prefs));
+        prefs->length = sizeof (default_prefs);
+        bcopy (default_prefs, prefs->contents, sizeof (default_prefs));
+        bcopy (contents, prefs->contents, length);
+        g_free (contents);
+        contents = prefs->contents;
+    }
+    else
+    {
+        prefs->contents = contents;
+        prefs->length = length;
+    }
+
+    prefs->ipod_set_up = contents[0x08];
+    prefs->music_mgmt_type = contents[0x0A];
+    prefs->music_update_type = contents[0x0B];
+    bcopy (&(contents[0x0C]), &(prefs->music_lib_link_id), 8);
+
+    g_free (itunes_dir);
+    return prefs;
+}
+
+/**
+ * itdb_prefs_write:
+ * @device: an #Itdb_Device
+ * @prefs: the #Itdb_Prefs to write to the iPod
+ * @error: return location for a #GError or NULL
+ *
+ * Write out an iPod preferences file.
+ *
+ * Return value: TRUE on success, FALSE on error, in which case @error is
+ * set accordingly.
+ *zzz should be able to create file if it doesn't exist.
+ *zzz endianess?
+ **/
+gboolean itdb_prefs_write(Itdb_Device *device, Itdb_Prefs *prefs,
+			  GError **error)
+{
+    gchar *prefs_filename = NULL, *itunes_path = NULL;
+    FILE *fd;
+    gint length;
+    gchar *contents = NULL;
+    gboolean result = TRUE;
+
+    g_return_val_if_fail (device, FALSE);
+    g_return_val_if_fail (device->mountpoint, FALSE);
+    g_return_val_if_fail (prefs, FALSE);
+
+    itunes_path = itdb_get_itunes_dir (device->mountpoint);
+
+    if(!itunes_path)
+    {
+	error_no_itunes_dir (device->mountpoint, error);
+	return FALSE;
+    }
+
+    prefs_filename = g_build_filename (itunes_path, "iTunesPrefs", NULL);
+
+    /* get the preferences contents */
+    contents = prefs->contents;
+    length = prefs->length;
+
+    /* update the known preferences */
+    contents[0x08] = prefs->ipod_set_up;
+    contents[0x0A] = prefs->music_mgmt_type;
+    contents[0x0B] = prefs->music_update_type;
+    bcopy (&(prefs->music_lib_link_id), &(contents[0x0C]), 8);
+
+    /* open the preferences file for writing */
+    fd = fopen(prefs_filename, "wb");
+    if (fd == NULL)
+    {
+	g_set_error (error,
+		     G_FILE_ERROR,
+		     g_file_error_from_errno (errno),
+		     _("Error opening '%s' for writing (%s)."),
+		     prefs_filename, g_strerror (errno));
+	return FALSE;
+    }
+
+    /* write the preferences file */
+    fwrite(contents, 1, length, fd);
+    fclose(fd);
+
+    if (prefs_filename)
+	g_free (prefs_filename);
+    if (itunes_path)
+	g_free (itunes_path);
+
+    /* make sure all buffers are flushed as some people tend to
+       disconnect as soon as gtkpod returns */
+    sync ();
+
+    return result;
+}
+
+/**
+ * itdb_update_playlists_read:
+ * @device: an #Itdb_Device
+ * @playlists: returned list of update playlist IDs
+ * @num_playlists: returned number of update playlists
+ * @error: return location for a #GError or NULL
+ *
+ * Read an iPod update playlists file.
+ *
+ * Return value: TRUE on success, FALSE on error, in which case @error is
+ * set accordingly.
+ *zzz endianess?
+ **/
+gboolean itdb_update_playlists_read(Itdb_Device *device, guint64 **playlists,
+				    gint *num_playlists, GError **error)
+{
+    gchar *playlists_filename = NULL, *itunes_path = NULL;
+    gchar *itunes_dir;
+    const gchar *p_playlistspath[] = {"iTunesPlaylists", NULL};
+    gsize length;
+
+    itunes_dir = itdb_get_itunes_dir (device->mountpoint);
+
+    if (!itunes_dir)
+    {
+	error_no_itunes_dir (device->mountpoint, error);
+	return FALSE;
+    }
+
+    playlists_filename = itdb_resolve_path(itunes_dir, p_playlistspath);
+    if (playlists_filename)
+    {
+	if (g_file_get_contents (playlists_filename,
+				 (gchar **) playlists,
+				 &length,
+				 error))
+	{
+	    *num_playlists = length / sizeof (guint64);
+	}
+	else
+	{
+	    gchar *str = g_build_filename (device->mountpoint,
+					   p_playlistspath[0],
+					   NULL);
+	    g_set_error (error,
+			 ITDB_FILE_ERROR,
+			 ITDB_FILE_ERROR_NOTFOUND,
+			 _("Error reading file: '%s'."),
+			 str);
+	    g_free (str);
+	}
+
+	g_free (playlists_filename);
+    }
+    else
+    {
+        *num_playlists = 0;
+        *playlists = NULL;
+    }
+
+    g_free (itunes_dir);
+    return TRUE;
+}
+
+/**
+ * itdb_update_playlists_write:
+ * @device: an #Itdb_Device
+ * @playlists: the list of update playlists to write to the iPod
+ * @num_playlists: the number of playlists
+ * @error: return location for a #GError or NULL
+ *
+ * Write out an iPod update playlists file.
+ *
+ * Return value: TRUE on success, FALSE on error, in which case @error is
+ * set accordingly.
+ *zzz endianess?
+ **/
+gboolean itdb_update_playlists_write(Itdb_Device *device, guint64 *playlists,
+				     gint num_playlists, GError **error)
+{
+    gchar *playlists_filename = NULL, *itunes_path = NULL;
+    FILE *fd;
+    int length;
+    gboolean result = TRUE;
+
+    g_return_val_if_fail (device, FALSE);
+    g_return_val_if_fail (device->mountpoint, FALSE);
+    g_return_val_if_fail (playlists, FALSE);
+
+    itunes_path = itdb_get_itunes_dir (device->mountpoint);
+
+    if(!itunes_path)
+    {
+	error_no_itunes_dir (device->mountpoint, error);
+	return FALSE;
+    }
+
+    playlists_filename = g_build_filename (itunes_path,
+					   "iTunesPlaylists",
+					   NULL);
+
+    /* open the playlists file for writing */
+    fd = fopen(playlists_filename, "wb");
+    if (fd == NULL)
+    {
+	g_set_error (error,
+		     G_FILE_ERROR,
+		     g_file_error_from_errno (errno),
+		     _("Error opening '%s' for writing (%s)."),
+		     playlists_filename, g_strerror (errno));
+	return FALSE;
+    }
+
+    /* write the playlists file */
+    fwrite(playlists, 1, num_playlists * sizeof (guint64), fd);
+    fclose(fd);
+
+    if (playlists_filename)
+	g_free (playlists_filename);
+    if (itunes_path)
+	g_free (itunes_path);
+
+    /* make sure all buffers are flushed as some people tend to
+       disconnect as soon as gtkpod returns */
+    sync ();
+
+    return result;
+}
+