Adding upstream version 4.2.2.upstream/4.2.2

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

1 files changed, 117 insertions, 0 deletions

diff --git a/epan/crc32-tvb.h b/epan/crc32-tvb.h
new file mode 100644
index 00000000..ea67370c
--- /dev/null
+++ b/epan/crc32-tvb.h
@@ -0,0 +1,117 @@
+/** @file
+ * Declaration of CRC-32 tvbuff routines
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef __CRC32_TVB_H__
+#define __CRC32_TVB_H__
+
+#include "ws_symbol_export.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** Compute CRC32 CCITT checksum of a tv buffer.
+ @param tvb The tv buffer containing the data.
+ @param len The number of bytes to include in the computation.
+ @return The CRC32 CCITT checksum. */
+WS_DLL_PUBLIC guint32 crc32_ccitt_tvb(tvbuff_t *tvb, guint len);
+
+/** Compute CRC32 CCITT checksum of a tv buffer.
+ @param tvb The tv buffer containing the data.
+ @param offset The offset into the tv buffer.
+ @param len The number of bytes to include in the computation.
+ @return The CRC32 CCITT checksum. */
+WS_DLL_PUBLIC guint32 crc32_ccitt_tvb_offset(tvbuff_t *tvb, guint offset, guint len);
+
+/** Compute CRC32 CCITT checksum of a tv buffer.  If computing the
+ *  checksum over multiple tv buffers and you want to feed the partial CRC32
+ *  back in, remember to take the 1's complement of the partial CRC32 first.
+ @param tvb The tv 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 guint32 crc32_ccitt_tvb_seed(tvbuff_t *tvb, guint len, guint32 seed);
+
+/** Compute CRC32C checksum of a tv buffer.  If computing the
+ *  checksum over multiple tv buffers and you want to feed the partial CRC32
+ *  back in, remember to take the 1's complement of the partial CRC32 first.
+ @param tvb The tv buffer containing the data.
+ @param offset The offset into the tv buffer.
+ @param len The number of bytes to include in the computation.
+ @param seed The seed to use.
+ @return The CRC32C checksum (using the given seed). */
+WS_DLL_PUBLIC guint32 crc32c_tvb_offset_calculate(tvbuff_t *tvb, guint offset,
+                                           guint len, guint32 seed);
+
+/** Compute CRC32 CCITT checksum of a tv buffer.  If computing the
+ *  checksum over multiple tv buffers and you want to feed the partial CRC32
+ *  back in, remember to take the 1's complement of the partial CRC32 first.
+ @param tvb The tv buffer containing the data.
+ @param offset The offset into the tv buffer.
+ @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 guint32 crc32_ccitt_tvb_offset_seed(tvbuff_t *tvb, guint offset,
+                                           guint len, guint32 seed);
+
+/** Compute IEEE 802.x CRC32 checksum of a tv buffer.
+ @param tvb The tv buffer containing the data.
+ @param len The number of bytes to include in the computation.
+ @return The IEEE 802.x CRC32 checksum. */
+WS_DLL_PUBLIC guint32 crc32_802_tvb(tvbuff_t *tvb, guint len);
+
+
+/** Compute MPEG-2 CRC32 checksum of a tv buffer.
+ @param tvb The tv buffer containing the data.
+ @param len The number of bytes to include in the computation.
+ @return The MPEG-2 CRC32 checksum. */
+WS_DLL_PUBLIC guint32 crc32_mpeg2_tvb(tvbuff_t *tvb, guint len);
+
+/** Compute MPEG-2 CRC32 checksum of a tv buffer.
+ @param tvb The tv buffer containing the data.
+ @param offset The offset into the tv buffer.
+ @param len The number of bytes to include in the computation.
+ @return The MPEG-2 CRC32 checksum. */
+WS_DLL_PUBLIC guint32 crc32_mpeg2_tvb_offset(tvbuff_t *tvb, guint offset, guint len);
+
+/** Compute MPEG-2 CRC32 checksum of a buffer of data.
+ @param tvb The tv 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 guint32 crc32_mpeg2_tvb_seed(tvbuff_t *tvb, guint len, guint32 seed);
+
+/** Compute MPEG-2 CRC32 checksum of a buffer of data.
+ @param tvb The tv buffer containing the data.
+ @param offset The offset into the tv buffer.
+ @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 guint32 crc32_mpeg2_tvb_offset_seed(tvbuff_t *tvb, guint offset,
+                                           guint len, guint32 seed);
+
+/** Compute CRC32 checksum of a tv buffer using the parameters
+ *    Width        = 32 bits
+ *    Poly         = 0x0AA725CF
+ *    Reflection   = true
+ *    Algorithm    = table-driven
+ @param tvb The tv buffer containing the data.
+ @param offset The offset into the tv buffer.
+ @param len The number of bytes to include in the computation.
+ @param seed The seed to use.
+ @return The CRC32 checksum. */
+WS_DLL_PUBLIC guint32 crc32_0x0AA725CF_tvb_offset_seed(tvbuff_t *tvb,
+                                            guint offset, guint len, guint32 seed);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* crc32-tvb.h */