Move supplicant to idf and do following refactoring: 1. Make the folder structure consitent with supplicant upstream 2. Remove duplicated header files and minimize the public header files 3. Refactor for WiFi/supplicant interfaces
168 lines
4.2 KiB
C
168 lines
4.2 KiB
C
/*
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* Dynamic data buffer
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* Copyright (c) 2007-2009, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#ifndef WPABUF_H
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#define WPABUF_H
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/*
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* Internal data structure for wpabuf. Please do not touch this directly from
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* elsewhere. This is only defined in header file to allow inline functions
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* from this file to access data.
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*/
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struct wpabuf {
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size_t size; /* total size of the allocated buffer */
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size_t used; /* length of data in the buffer */
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u8 *ext_data; /* pointer to external data; NULL if data follows
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* struct wpabuf */
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/* optionally followed by the allocated buffer */
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};
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int wpabuf_resize(struct wpabuf **buf, size_t add_len);
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struct wpabuf * wpabuf_alloc(size_t len);
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struct wpabuf * wpabuf_alloc_ext_data(u8 *data, size_t len);
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struct wpabuf * wpabuf_alloc_copy(const void *data, size_t len);
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struct wpabuf * wpabuf_dup(const struct wpabuf *src);
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void wpabuf_free(struct wpabuf *buf);
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void * wpabuf_put(struct wpabuf *buf, size_t len);
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struct wpabuf * wpabuf_concat(struct wpabuf *a, struct wpabuf *b);
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struct wpabuf * wpabuf_zeropad(struct wpabuf *buf, size_t len);
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void wpabuf_printf(struct wpabuf *buf, char *fmt, ...) PRINTF_FORMAT(2, 3);
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/**
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* wpabuf_size - Get the currently allocated size of a wpabuf buffer
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* @buf: wpabuf buffer
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* Returns: Currently allocated size of the buffer
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*/
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static inline size_t wpabuf_size(const struct wpabuf *buf)
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{
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return buf->size;
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}
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/**
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* wpabuf_len - Get the current length of a wpabuf buffer data
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* @buf: wpabuf buffer
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* Returns: Currently used length of the buffer
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*/
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static inline size_t wpabuf_len(const struct wpabuf *buf)
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{
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return buf->used;
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}
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/**
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* wpabuf_tailroom - Get size of available tail room in the end of the buffer
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* @buf: wpabuf buffer
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* Returns: Tail room (in bytes) of available space in the end of the buffer
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*/
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static inline size_t wpabuf_tailroom(const struct wpabuf *buf)
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{
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return buf->size - buf->used;
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}
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/**
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* wpabuf_head - Get pointer to the head of the buffer data
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* @buf: wpabuf buffer
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* Returns: Pointer to the head of the buffer data
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*/
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static inline const void * wpabuf_head(const struct wpabuf *buf)
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{
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if (buf->ext_data)
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return buf->ext_data;
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return buf + 1;
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}
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static inline const u8 * wpabuf_head_u8(const struct wpabuf *buf)
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{
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return wpabuf_head(buf);
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}
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/**
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* wpabuf_mhead - Get modifiable pointer to the head of the buffer data
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* @buf: wpabuf buffer
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* Returns: Pointer to the head of the buffer data
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*/
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static inline void * wpabuf_mhead(struct wpabuf *buf)
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{
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if (buf->ext_data)
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return buf->ext_data;
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return buf + 1;
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}
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static inline u8 * wpabuf_mhead_u8(struct wpabuf *buf)
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{
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return wpabuf_mhead(buf);
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}
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static inline void wpabuf_put_u8(struct wpabuf *buf, u8 data)
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{
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u8 *pos = wpabuf_put(buf, 1);
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*pos = data;
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}
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static inline void wpabuf_put_le16(struct wpabuf *buf, u16 data)
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{
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u8 *pos = wpabuf_put(buf, 2);
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WPA_PUT_LE16(pos, data);
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}
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static inline void wpabuf_put_le32(struct wpabuf *buf, u32 data)
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{
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u8 *pos = wpabuf_put(buf, 4);
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WPA_PUT_LE32(pos, data);
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}
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static inline void wpabuf_put_be16(struct wpabuf *buf, u16 data)
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{
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u8 *pos = wpabuf_put(buf, 2);
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WPA_PUT_BE16(pos, data);
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}
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static inline void wpabuf_put_be24(struct wpabuf *buf, u32 data)
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{
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u8 *pos = wpabuf_put(buf, 3);
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WPA_PUT_BE24(pos, data);
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}
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static inline void wpabuf_put_be32(struct wpabuf *buf, u32 data)
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{
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u8 *pos = wpabuf_put(buf, 4);
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WPA_PUT_BE32(pos, data);
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}
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static inline void wpabuf_put_data(struct wpabuf *buf, const void *data,
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size_t len)
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{
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if (data)
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os_memcpy(wpabuf_put(buf, len), data, len);
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}
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static inline void wpabuf_put_buf(struct wpabuf *dst,
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const struct wpabuf *src)
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{
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wpabuf_put_data(dst, wpabuf_head(src), wpabuf_len(src));
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}
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static inline void wpabuf_set(struct wpabuf *buf, const void *data, size_t len)
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{
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buf->ext_data = (u8 *) data;
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buf->size = buf->used = len;
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}
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static inline void wpabuf_put_str(struct wpabuf *dst, const char *str)
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{
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wpabuf_put_data(dst, str, os_strlen(str));
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}
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#endif /* WPABUF_H */
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