Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 106 insertions, 0 deletions

diff --git a/wsutil/crc32.h b/wsutil/crc32.h
new file mode 100644
index 00000000..c6891730
--- /dev/null
+++ b/wsutil/crc32.h
@@ -0,0 +1,106 @@
+/** @file
+ * Declaration of CRC-32 routine and table
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef __CRC32_H__
+#define __CRC32_H__
+
+#include <wireshark.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#define CRC32_CCITT_SEED 0xFFFFFFFF
+#define CRC32C_PRELOAD   0xffffffff
+#define CRC32_MPEG2_SEED 0xFFFFFFFF
+
+/*
+ * Byte swap fix contributed by Dave Wysochanski <davidw@netapp.com>.
+ */
+#define CRC32C_SWAP(crc32c_value)				\
+	(((crc32c_value & 0xff000000) >> 24)	|	\
+	 ((crc32c_value & 0x00ff0000) >>  8)	|	\
+	 ((crc32c_value & 0x0000ff00) <<  8)	|	\
+	 ((crc32c_value & 0x000000ff) << 24))
+
+/** Lookup the crc value in the crc32_ccitt_table
+ @param pos Position in the table. */
+WS_DLL_PUBLIC uint32_t crc32_ccitt_table_lookup (unsigned char pos);
+
+/** Lookup the crc value in the crc32c_table
+ @param pos Position in the table. */
+WS_DLL_PUBLIC uint32_t crc32c_table_lookup (unsigned char pos);
+
+/** Compute CRC32C checksum of a buffer of data.
+ @param buf The buffer containing the data.
+ @param len The number of bytes to include in the computation.
+ @param crc The preload value for the CRC32C computation.
+ @return The CRC32C checksum. */
+WS_DLL_PUBLIC uint32_t crc32c_calculate(const void *buf, int len, uint32_t crc);
+
+/** Compute CRC32C checksum of a buffer of data without swapping seed crc
+ or completed checksum
+ @param buf The buffer containing the data.
+ @param len The number of bytes to include in the computation.
+ @param crc The preload value for the CRC32C computation.
+ @return The CRC32C checksum. */
+WS_DLL_PUBLIC uint32_t crc32c_calculate_no_swap(const void *buf, int len, uint32_t crc);
+
+/** Compute CRC32 CCITT checksum of a buffer of data.
+ @param buf The buffer containing the data.
+ @param len The number of bytes to include in the computation.
+ @return The CRC32 CCITT checksum. */
+WS_DLL_PUBLIC uint32_t crc32_ccitt(const uint8_t *buf, unsigned len);
+
+/** Compute CRC32 CCITT checksum of a buffer of data.  If computing the
+ *  checksum over multiple buffers and you want to feed the partial CRC32
+ *  back in, remember to take the 1's complement of the partial CRC32 first.
+ @param buf The buffer containing the data.
+ @param len The number of bytes to include in the computation.
+ @param seed The seed to use.
+ @return The CRC32 CCITT checksum (using the given seed). */
+WS_DLL_PUBLIC uint32_t crc32_ccitt_seed(const uint8_t *buf, unsigned len, uint32_t seed);
+
+/** Compute MPEG-2 CRC32 checksum of a buffer of data.
+ @param buf The buffer containing the data.
+ @param len The number of bytes to include in the computation.
+ @param seed The seed to use.
+ @return The CRC32 MPEG-2 checksum (using the given seed). */
+WS_DLL_PUBLIC uint32_t crc32_mpeg2_seed(const uint8_t *buf, unsigned len, uint32_t seed);
+
+/** Computes CRC32 checksum for the given data with the polynom 0x0AA725CF using
+ *  precompiled CRC table
+ * @param buf a pointer to a buffer of the given length
+ * @param len the length of the given buffer
+ * @param seed The seed to use.
+ * @return the CRC32 checksum for the buffer
+ */
+WS_DLL_PUBLIC uint32_t crc32_0x0AA725CF_seed(const uint8_t *buf, unsigned len, uint32_t seed);
+
+/** Computes CRC32 checksum for the given data with the polynom 0x5D6DCB using
+ *  precompiled CRC table
+ * @param buf a pointer to a buffer of the given length
+ * @param len the length of the given buffer
+ * @param seed The seed to use.
+ * @return the CRC32 checksum for the buffer
+ */
+WS_DLL_PUBLIC uint32_t crc32_0x5D6DCB_seed(const uint8_t *buf, unsigned len, uint32_t seed);
+
+WS_DLL_PUBLIC int Dot11DecryptWepDecrypt(
+	const unsigned char *seed,
+	const size_t seed_len,
+	unsigned char *cypher_text,
+	const size_t data_len);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* crc32.h */