1 files changed, 73 insertions, 0 deletions

diff --git a/src/my/my_query_helper.c b/src/my/my_query_helper.c
new file mode 100644
index 000000000..057c32d9f
--- /dev/null
+++ b/src/my/my_query_helper.c
@@ -0,0 +1,73 @@
+/*
+     This file is part of GNUnet
+     Copyright (C) 2016 GNUnet e.V.
+
+     GNUnet 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 3, or (at your
+     option) any later version.
+
+     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+     Boston, MA 02110-1301, USA.
+*/
+/**
+ * @file my/my_query_helper.c
+ * @brief library to help with access to a MySQL database
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <mysql/mysql.h>
+#include "gnunet_my_lib.h"
+
+
+/**
+ * Function called to convert input argument into SQL parameters.
+ *
+ * @param cls closure
+ * @param pq data about the query
+ * @param qbind array of parameters to initialize
+ * @return -1 on error
+ */
+static int
+pq_conv_fixed_size (void *cls,
+                    const struct GNUNET_MY_QueryParam *qp,
+                    MYSQL_BIND *qbind)
+{
+  GNUNET_assert (1 == qp->num_params);
+  qbind->buffer = (void *) qp->data;
+  qbind->buffer_length = qp->data_len;
+  qbind->length = (unsigned long *) &qp->data_len;
+  return 0;
+}
+
+
+/**
+ * Generate query parameter for a buffer @a ptr of
+ * @a ptr_size bytes.
+ *
+ * @param ptr pointer to the query parameter to pass
+ * @oaran ptr_size number of bytes in @a ptr
+ */
+struct GNUNET_MY_QueryParam
+GNUNET_MY_query_param_fixed_size (const void *ptr,
+                                  size_t ptr_size)
+{
+  struct GNUNET_MY_QueryParam qp = {
+    &pq_conv_fixed_size,
+    NULL,
+    1,
+    ptr,
+    (unsigned long) ptr_size
+  };
+  return qp;
+}
+
+
+/* end of my_query_helper.c */