1 files changed, 78 insertions, 0 deletions
diff --git a/gpgme/data-user.c b/gpgme/data-user.c
new file mode 100644
index 00000000..dd0e5700
--- /dev/null
+++ b/gpgme/data-user.c
@@ -0,0 +1,78 @@
+/* data-user.c - A user callback based data object.
+ *      Copyright (C) 2002 g10 Code GmbH
+ *
+ * This file is part of GPGME.
+ *
+ * GPGME 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.
+ *
+ * GPGME 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/types.h>
+
+#include "data.h"
+
+
+static int
+user_read (GpgmeData dh, void *buffer, size_t size)
+{
+  return (*dh->data.user.cbs->read) (dh->data.user.handle, buffer, size);
+}
+
+
+static ssize_t
+user_write (GpgmeData dh, const void *buffer, size_t size)
+{
+  return (*dh->data.user.cbs->write) (dh->data.user.handle, buffer, size);
+}
+
+
+static off_t
+user_seek (GpgmeData dh, off_t offset, int whence)
+{
+  return (*dh->data.user.cbs->seek) (dh->data.user.handle, offset, whence);
+}
+
+
+static int
+user_release (GpgmeData dh)
+{
+  (*dh->data.user.cbs->release) (dh->data.user.handle);
+  return 0;
+}
+
+
+static struct gpgme_data_cbs user_cbs =
+  {
+    user_read,
+    user_write,
+    user_seek,
+    user_release
+  };
+
+
+GpgmeError
+gpgme_data_new_from_cbs (GpgmeData *dh, struct GpgmeDataCbs *cbs, void *handle)
+{
+  GpgmeError err = _gpgme_data_new (dh, &user_cbs);
+  if (err)
+    return err;
+
+  (*dh)->data.user.cbs = cbs;
+  (*dh)->data.user.handle = handle;
+  return 0;
+}