1 files changed, 67 insertions, 0 deletions
diff --git a/src/buffer.c b/src/buffer.c
new file mode 100644
index 0000000..3283c15
--- /dev/null
+++ b/src/buffer.c
@@ -0,0 +1,67 @@
+/*
+ * (C) 2006-2008 by Pablo Neira Ayuso <pablo@netfilter.org>
+ * 
+ * This program 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.
+ *
+ * This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "buffer.h"
+
+struct buffer *buffer_create(unsigned int size)
+{
+	struct buffer *b;
+
+	b = malloc(sizeof(struct buffer));
+	if (b == NULL)
+		return NULL;
+	memset(b, 0, sizeof(struct buffer));
+
+	b->size = size;
+
+	b->data = malloc(size);
+	if (b->data == NULL) {
+		free(b);
+		return NULL;
+	}
+	memset(b->data, 0, size);
+
+	return b;
+}
+
+int buffer_add(struct buffer *b, void *data, unsigned int size)
+{
+	if (b->size - b->cur_size < size) {
+		errno = ENOSPC;
+		return -1;
+	}
+
+	memcpy(b->data + b->cur_size, data, size);
+	b->cur_size += size;
+}
+
+void buffer_flush(struct buffer *b, 
+		  void (*cb)(void *buffer_data, void *data), 
+		  void *data)
+{
+	cb(b->data, data);
+	b->cur_size = 0;
+	memset(b->data, 0, b->size);
+}
+
+unsigned int buffer_size(struct buffer *b)
+{
+	return b->size;
+}