+/*
+ * This file is part of secnet.
+ * See README for full list of copyright holders.
+ *
+ * secnet 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 of the License, or
+ * (at your option) any later version.
+ *
+ * secnet 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
+ * version 3 along with secnet; if not, see
+ * https://www.gnu.org/licenses/gpl.html.
+ */
+
#ifndef unaligned_h
#define unaligned_h
+#include <stdint.h>
+#include "util.h"
+
/* Parts of the secnet key-exchange protocol require access to
unaligned big-endian quantities in buffers. These macros provide
convenient access, even on architectures that don't support unaligned
#define put_uint16(a,v) do {(a)[0]=((v)&0xff00)>>8; (a)[1]=(v)&0xff;} while(0)
-#define get_uint32(a) (((a)[0]<<24)|((a)[1]<<16)|((a)[2])<<8|(a)[3])
-
-#define get_uint16(a) (((a)[0]<<8)|(a)[1])
-
-#define buf_append_uint32(buf,v) do { uint8_t *c=buf_append((buf),4); \
- put_uint32(c,(v)); } while(0)
-
-#define buf_append_uint16(buf,v) do { uint8_t *c=buf_append((buf),2); \
- put_uint16(c,(v)); } while(0)
-
-#define buf_prepend_uint32(buf,v) do { uint8_t *c=buf_prepend((buf),4); \
- put_uint32(c,(v)); } while(0)
+#define put_uint8(a,v) do {(a)[0]=((v)&0xff);} while(0)
-#define buf_prepend_uint16(buf,v) do { uint8_t *c=buf_prepend((buf),2); \
- put_uint16(c,(v)); } while(0)
+#define get_uint32(a) \
+ (((uint32_t)(a)[0]<<24) | ((uint32_t)(a)[1]<<16) | \
+ ((uint32_t)(a)[2]<<8) | (uint32_t)(a)[3])
-#define buf_unappend_uint32(buf) ({uint8_t *c=buf_unappend((buf),4); \
- get_uint32(c);})
+#define get_uint16(a) (((uint16_t)(a)[0]<<8)|(uint16_t)(a)[1])
-#define buf_unappend_uint16(buf) ({uint8_t *c=buf_unappend((buf),2); \
- get_uint16(c);})
+#define get_uint8(a) (((uint8_t)(a)[0]))
-#define buf_unprepend_uint32(buf) ({uint8_t *c=buf_unprepend((buf),4); \
- get_uint32(c);})
+#define UNALIGNED_DEF_FORTYPE(type,appre) \
+static inline void buf_##appre##_##type(struct buffer_if *buf, type##_t v) \
+{ \
+ uint8_t *c=buf_##appre(buf,sizeof(type##_t)); \
+ put_##type(c,v); \
+} \
+static inline type##_t buf_un##appre##_##type(struct buffer_if *buf) \
+{ \
+ const uint8_t *c=buf_un##appre(buf,sizeof(type##_t)); \
+ return get_##type(c); \
+}
-#define buf_unprepend_uint16(buf) ({uint8_t *c=buf_unprepend((buf),2); \
- get_uint16(c);})
+UNALIGNED_DEF_FORTYPE(uint32,append)
+UNALIGNED_DEF_FORTYPE(uint16,append)
+UNALIGNED_DEF_FORTYPE(uint8,append)
+UNALIGNED_DEF_FORTYPE(uint32,prepend)
+UNALIGNED_DEF_FORTYPE(uint16,prepend)
+UNALIGNED_DEF_FORTYPE(uint8,prepend)
#endif /* unaligned_h */