From 7d17818cec8597f847b0a2537fde991bbc3d9e96 Mon Sep 17 00:00:00 2001
From: Lasse Collin <lasse.collin@tukaani.org>
Date: Wed, 18 Jun 2008 18:02:10 +0300
Subject: Update the code to mostly match the new simpler file format
 specification. Simplify things by removing most of the support for known
 uncompressed size in most places. There are some miscellaneous changes here
 and there too.

The API of liblzma has got many changes and still some
more will be done soon. While most of the code has been
updated, some things are not fixed (the command line tool
will choke with invalid filter chain, if nothing else).

Subblock filter is somewhat broken for now. It will be
updated once the encoded format of the Subblock filter
has been decided.
---
 src/liblzma/check/check.c | 55 +++++++++++++++++++++++++++++++++++++----------
 1 file changed, 44 insertions(+), 11 deletions(-)

(limited to 'src/liblzma/check/check.c')

diff --git a/src/liblzma/check/check.c b/src/liblzma/check/check.c
index ba59af2e..388b57e8 100644
--- a/src/liblzma/check/check.c
+++ b/src/liblzma/check/check.c
@@ -13,8 +13,15 @@
 
 #include "check.h"
 
-// See the .lzma header format specification section 2.2.2.
-LZMA_API const uint32_t lzma_check_sizes[8] = { 0, 4, 4, 8, 16, 32, 32, 64 };
+// See the .lzma header format specification section 2.1.1.2.
+LZMA_API const uint32_t lzma_check_sizes[LZMA_CHECK_ID_MAX + 1] = {
+	0,
+	4, 4, 4,
+	8, 8, 8,
+	16, 16, 16,
+	32, 32, 32,
+	64, 64, 64
+};
 
 
 LZMA_API const lzma_bool lzma_available_checks[LZMA_CHECK_ID_MAX + 1] = {
@@ -27,6 +34,7 @@ LZMA_API const lzma_bool lzma_available_checks[LZMA_CHECK_ID_MAX + 1] = {
 #endif
 
 	false,  // Reserved
+	false,  // Reserved
 
 #ifdef HAVE_CHECK_CRC64
 	true,
@@ -35,6 +43,10 @@ LZMA_API const lzma_bool lzma_available_checks[LZMA_CHECK_ID_MAX + 1] = {
 #endif
 
 	false,  // Reserved
+	false,  // Reserved
+	false,  // Reserved
+	false,  // Reserved
+	false,  // Reserved
 
 #ifdef HAVE_CHECK_SHA256
 	true,
@@ -44,6 +56,9 @@ LZMA_API const lzma_bool lzma_available_checks[LZMA_CHECK_ID_MAX + 1] = {
 
 	false,  // Reserved
 	false,  // Reserved
+	false,  // Reserved
+	false,  // Reserved
+	false,  // Reserved
 };
 
 
@@ -58,24 +73,24 @@ lzma_check_init(lzma_check *check, lzma_check_type type)
 
 #ifdef HAVE_CHECK_CRC32
 	case LZMA_CHECK_CRC32:
-		check->crc32 = 0;
+		check->state.crc32 = 0;
 		break;
 #endif
 
 #ifdef HAVE_CHECK_CRC64
 	case LZMA_CHECK_CRC64:
-		check->crc64 = 0;
+		check->state.crc64 = 0;
 		break;
 #endif
 
 #ifdef HAVE_CHECK_SHA256
 	case LZMA_CHECK_SHA256:
-		lzma_sha256_init(&check->sha256);
+		lzma_sha256_init(check);
 		break;
 #endif
 
 	default:
-		if (type <= LZMA_CHECK_ID_MAX)
+		if ((unsigned)(type) <= LZMA_CHECK_ID_MAX)
 			ret = LZMA_UNSUPPORTED_CHECK;
 		else
 			ret = LZMA_PROG_ERROR;
@@ -93,19 +108,19 @@ lzma_check_update(lzma_check *check, lzma_check_type type,
 	switch (type) {
 #ifdef HAVE_CHECK_CRC32
 	case LZMA_CHECK_CRC32:
-		check->crc32 = lzma_crc32(buf, size, check->crc32);
+		check->state.crc32 = lzma_crc32(buf, size, check->state.crc32);
 		break;
 #endif
 
 #ifdef HAVE_CHECK_CRC64
 	case LZMA_CHECK_CRC64:
-		check->crc64 = lzma_crc64(buf, size, check->crc64);
+		check->state.crc64 = lzma_crc64(buf, size, check->state.crc64);
 		break;
 #endif
 
 #ifdef HAVE_CHECK_SHA256
 	case LZMA_CHECK_SHA256:
-		lzma_sha256_update(buf, size, &check->sha256);
+		lzma_sha256_update(buf, size, check);
 		break;
 #endif
 
@@ -120,11 +135,29 @@ lzma_check_update(lzma_check *check, lzma_check_type type,
 extern void
 lzma_check_finish(lzma_check *check, lzma_check_type type)
 {
+	switch (type) {
+#ifdef HAVE_CHECK_CRC32
+	case LZMA_CHECK_CRC32:
+		*(uint32_t *)(check->buffer) = check->state.crc32;
+		break;
+#endif
+
+#ifdef HAVE_CHECK_CRC64
+	case LZMA_CHECK_CRC64:
+		*(uint64_t *)(check->buffer) = check->state.crc64;
+		break;
+#endif
+
 #ifdef HAVE_CHECK_SHA256
-	if (type == LZMA_CHECK_SHA256)
-		lzma_sha256_finish(&check->sha256);
+	case LZMA_CHECK_SHA256:
+		lzma_sha256_finish(check);
+		break;
 #endif
 
+	default:
+		break;
+	}
+
 	return;
 }
 
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