/*
* Dynamic data buffer
- * Copyright (c) 2007-2009, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2007-2012, Jouni Malinen <j@w1.fi>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#ifndef WPABUF_H
#define WPABUF_H
+/* wpabuf::buf is a pointer to external data */
+#define WPABUF_FLAG_EXT_DATA BIT(0)
+
/*
* Internal data structure for wpabuf. Please do not touch this directly from
* elsewhere. This is only defined in header file to allow inline functions
struct wpabuf {
size_t size; /* total size of the allocated buffer */
size_t used; /* length of data in the buffer */
- u8 *ext_data; /* pointer to external data; NULL if data follows
- * struct wpabuf */
+ u8 *buf; /* pointer to the head of the buffer */
+ unsigned int flags;
/* optionally followed by the allocated buffer */
};
struct wpabuf * wpabuf_alloc_copy(const void *data, size_t len);
struct wpabuf * wpabuf_dup(const struct wpabuf *src);
void wpabuf_free(struct wpabuf *buf);
+void wpabuf_clear_free(struct wpabuf *buf);
void * wpabuf_put(struct wpabuf *buf, size_t len);
struct wpabuf * wpabuf_concat(struct wpabuf *a, struct wpabuf *b);
struct wpabuf * wpabuf_zeropad(struct wpabuf *buf, size_t len);
void wpabuf_printf(struct wpabuf *buf, char *fmt, ...) PRINTF_FORMAT(2, 3);
+struct wpabuf * wpabuf_parse_bin(const char *buf);
/**
*/
static inline const void * wpabuf_head(const struct wpabuf *buf)
{
- if (buf->ext_data)
- return buf->ext_data;
- return buf + 1;
+ return buf->buf;
}
static inline const u8 * wpabuf_head_u8(const struct wpabuf *buf)
{
- return wpabuf_head(buf);
+ return (const u8 *) wpabuf_head(buf);
}
/**
*/
static inline void * wpabuf_mhead(struct wpabuf *buf)
{
- if (buf->ext_data)
- return buf->ext_data;
- return buf + 1;
+ return buf->buf;
}
static inline u8 * wpabuf_mhead_u8(struct wpabuf *buf)
{
- return wpabuf_mhead(buf);
+ return (u8 *) wpabuf_mhead(buf);
}
static inline void wpabuf_put_u8(struct wpabuf *buf, u8 data)
{
- u8 *pos = wpabuf_put(buf, 1);
+ u8 *pos = (u8 *) wpabuf_put(buf, 1);
*pos = data;
}
static inline void wpabuf_put_le16(struct wpabuf *buf, u16 data)
{
- u8 *pos = wpabuf_put(buf, 2);
+ u8 *pos = (u8 *) wpabuf_put(buf, 2);
WPA_PUT_LE16(pos, data);
}
+static inline void wpabuf_put_le32(struct wpabuf *buf, u32 data)
+{
+ u8 *pos = (u8 *) wpabuf_put(buf, 4);
+ WPA_PUT_LE32(pos, data);
+}
+
static inline void wpabuf_put_be16(struct wpabuf *buf, u16 data)
{
- u8 *pos = wpabuf_put(buf, 2);
+ u8 *pos = (u8 *) wpabuf_put(buf, 2);
WPA_PUT_BE16(pos, data);
}
static inline void wpabuf_put_be24(struct wpabuf *buf, u32 data)
{
- u8 *pos = wpabuf_put(buf, 3);
+ u8 *pos = (u8 *) wpabuf_put(buf, 3);
WPA_PUT_BE24(pos, data);
}
static inline void wpabuf_put_be32(struct wpabuf *buf, u32 data)
{
- u8 *pos = wpabuf_put(buf, 4);
+ u8 *pos = (u8 *) wpabuf_put(buf, 4);
WPA_PUT_BE32(pos, data);
}
static inline void wpabuf_set(struct wpabuf *buf, const void *data, size_t len)
{
- buf->ext_data = (u8 *) data;
+ buf->buf = (u8 *) data;
+ buf->flags = WPABUF_FLAG_EXT_DATA;
buf->size = buf->used = len;
}