From af1fed3a35f5616b5803f9a168a5170e5a7f85ca Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Fri, 30 Jan 2009 21:32:56 +0100
Subject: [PATCH] more parts of lz implemented

---
 rsb-lz.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 84 insertions(+), 9 deletions(-)

diff --git a/rsb-lz.c b/rsb-lz.c
index e3ce091..e43b74b 100644
--- a/rsb-lz.c
+++ b/rsb-lz.c
@@ -3,6 +3,7 @@
 #include <strings.h>
 #include <string.h>
 #include <errno.h>
+#include "rsb-crc.h"
 #include "rsb-lz.h"
 
 /* TODO: IMPLEMET THIS! */
@@ -446,26 +447,92 @@ struct s_59b78 {
 	unsigned char x; /* 9 */
 };
 
+unsigned int fn_59848(struct s_59b78 *data)
+{
+	return 0;
+}
+
+unsigned int fn_598b4(struct s_59b78 *data, unsigned int arg2)
+{
+	return 0;
+}
+
+void fn_5980c(unsigned int arg1, unsigned int mem[])
+{
+}
+
 void fn_5993c(struct s_59b78 *data, unsigned int mem[])
+{
+	unsigned int r5;
+	unsigned int r2;
+	unsigned int r4;
+	unsigned char arr_59b64[1024];
+
+	r5 = 1;
+
+	do {
+		r2 = fn_59848(data);
+		if (r2 == 0)
+			break;
+
+		r2 = fn_598b4(data, 8) & 0xff;
+		r4 = r2;
+
+		fn_5980c(r4, mem);
+		arr_59b64[r5] = r4;
+		r2 = r5 + 1;
+		r2 = r2 << 22;
+		r2 = r2 >> 22;
+		r5 = r2;
+	} while(1);
+
+	/* CONT: 599a4 */
+
+}
+
+unsigned int crc_check_59684(unsigned char *arg1, unsigned int arg2, unsigned int magic)
+{
+	unsigned int r3;
+	unsigned int r4;
+	unsigned int r5;
+
+#if 0
+	if (r0 < 0xc0000000)
+		return 1;
+#endif
+
+	r4 = *((unsigned int*)arg1 + 0x20);
+	r5 = *((unsigned int*)arg1 + 0x24);
+
+	if (r5 != magic)
+		return 2;
+	
+	if (arg2 >= r4)
+		r5 = 0;
+	else
+		return 3;
+
+	r5 = ~rsb_crc(~0x00, arg1, r4);
+	r3 = *((unsigned int*)(arg1 + r4));
+	printf("Checksums: 0x%02x <-> 0x%02x\n", r5, r3);
+
+	if (r3 == r5)
+		return 0;
+
+	return 0;
+}
+
+void fn_59508()
 {
 }
 
 void extract_lz_file(unsigned char *buf, unsigned char *name)
 {
-	unsigned int r0;
-	unsigned int r1;
-	unsigned int r2;
 	unsigned char *r3;
-	unsigned int r4;
 	unsigned int r5;
-	unsigned int r6;
 	unsigned char *r7 = NULL; /* Arg1, mem start */
-	unsigned int r8;
-	unsigned int r9;
 	unsigned char *r10 = NULL; /* Arg2, mem end */
 	unsigned char *r11 = buf; /* Arg3 */
-	unsigned int r12;
-	unsigned int r13;
 	struct s_59b78 struct1;
 	unsigned int arr_59b7c[1024];
 
@@ -503,6 +570,14 @@ void extract_lz_file(unsigned char *buf, unsigned char *name)
 
 	fn_5993c(&struct1, arr_59b7c);
 
+	r3 = r7 + 0x20;
+	r5 = *((unsigned int*)r3);
+
+	if (crc_check_59684(r7, r5, 0x46335053) != 0)
+		fn_59788();
+	
+	fn_59508();
+
 	free(r7);
 }
 
-- 
2.39.5