X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/rsbs2/blobdiff_plain/14ff7444fbe0e46226b640411372a5895db4fd74..a4019508ce28725ff1aefbada67b2be4c2e0015e:/rsb-lz.c

diff --git a/rsb-lz.c b/rsb-lz.c
index e3ce091..ddd9a53 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! */
@@ -427,45 +428,230 @@
 
 void fn_59560(unsigned int arg1)
 {
+	fprintf(stderr,"%s\n", __func__);
 }
 
 void fn_59578(unsigned int arg1, unsigned int arg2, unsigned int arg3, unsigned int arg4)
 {
+	fprintf(stderr,"%s\n", __func__);
 }
 
-void fn_59788()
+void fn_59788(const char *fname)
 {
-	fprintf(stderr,"error extracting...\n");
+	fprintf(stderr,"%s: error extracting...\n", fname);
 	exit(1);
 }
 
 struct s_59b78 {
-	unsigned char *start;
-	unsigned char *stop;
+	unsigned char *start; /* 0 */
+	unsigned char *stop; /* 4 */
 	unsigned char y; /* 8 */
 	unsigned char x; /* 9 */
 };
 
-void fn_5993c(struct s_59b78 *data, unsigned int mem[])
+unsigned int fn_597c8(struct s_59b78 *r6_data)
 {
+	unsigned char *r0;
+	unsigned char *r1;
+	unsigned char r5;
+
+	r5 = 0;
+
+	r0 = r6_data->start;
+	r1 = r6_data->stop;
+
+	if (r1 < r0)
+		fn_59788(__func__);
+
+	r5 = *r0;
+	r0++;
+	r6_data->start = r0;
+
+	return r5;
 }
 
-void extract_lz_file(unsigned char *buf, unsigned char *name)
+unsigned int fn_59848(struct s_59b78 *r6_data)
 {
-	unsigned int r0;
 	unsigned int r1;
 	unsigned int r2;
-	unsigned char *r3;
-	unsigned int r4;
 	unsigned int r5;
+
+	r1 = r6_data->y;
+	if (r1 == 0x80) {
+		r6_data->x = fn_597c8(r6_data);
+	}
+	r1 = r6_data->y;
+	r2 = r6_data->x;
+	r1 = r1 & r2;
+	r5 = r1 & 0xff;
+
+	r1 = r6_data->y;
+	r1 = r1 >> 1;
+	r6_data->y = r1;
+	if (r1 == 0)
+		r1 = 0x80;
+	
+	r6_data->y = r1;
+	if (r5 == 0)
+		return 0;
+
+	return 1;
+}
+
+unsigned int fn_598b4(struct s_59b78 *r11_data, unsigned int r10_arg2)
+{
+	unsigned int r1;
+	unsigned int r2;
 	unsigned int r6;
+	unsigned int r7;
+
+	r1 = r10_arg2 - 1;
+	r6 = 1 << r1;
+
+	r7 = 0;
+	do {
+		r1 = r11_data->y;
+		if (r1 == 0x80) {
+			r1 = fn_597c8(r11_data);
+		}
+		r11_data->x = r1;
+		r1 = r11_data->y;
+		r2 = r11_data->x;
+		r1 = r1 & r2;
+		if (r1 != 0)
+			r7 = r7 | r6;
+
+		r6 = r6 >> 1;
+
+		r2 = r11_data->y;
+		r2 = r2 >> 1;
+		r11_data->y = r2;
+
+		r1 = r11_data->y;
+		if(r1 == 0) {
+			r11_data->y = 0x80;
+		}
+	} while (r6 != 0);
+
+	return r7;
+}
+
+void fn_5980c(unsigned int arg1, unsigned int mem[])
+{
+	unsigned char *r1;
+	unsigned char *r2;
+
+	r1 = (unsigned char*)mem[0];
+	r2 = (unsigned char*)mem[1];
+
+	if (r1 > r2) {
+		printf("r1: 0x%08x, r2: 0x%08x\n", (unsigned int)r1, (unsigned int)r2);
+		fn_59788(__func__);
+	}
+
+	*r1 = arg1 & 0xff;
+
+	r1++;
+	mem[0] = (unsigned int)r1;
+}
+
+void fn_5993c(struct s_59b78 *data, unsigned int mem[])
+{
+	unsigned int r5;
+	unsigned int r2;
+	unsigned int r4;
+	unsigned int r6;
+	unsigned int r7;
+	unsigned int r11;
+	unsigned char arr_59b64[1024];
+
+	r5 = 1;
+
+	do {
+		do {
+			r2 = fn_59848(data);
+			printf("r2: 0x%x\n", r2);
+			if (r2 == 0)
+				break;
+
+			r2 = fn_598b4(data, 8) & 0xff;
+			r4 = r2;
+
+			fn_5980c(r4, mem);
+			arr_59b64[r5] = r4 & 0xff;
+			r2 = r5 + 1;
+			r2 = r2 << 22;
+			r2 = r2 >> 22;
+			r5 = r2;
+		} while(1);
+
+		r11 = fn_598b4(data, 0x0a);
+		if(r11 == 0)
+			return;
+
+		r2 = fn_598b4(data, 0x04);
+		r7 = r2 + 1;
+		r6 = 0;
+		do {
+			r2 = r6 + r11;
+			r2 = r2 << 22;
+			r2 = r2 >> 22;
+			r4 = arr_59b64[r2];
+			fn_5980c(r4, mem);
+			arr_59b64[r5] = r4 & 0xff;
+			r2 = r5 + 1;
+			r2 = r2 << 22;
+			r2 = r2 >> 22;
+			r5 = r2;
+			r6++;
+		} while(r6 <= r7);
+	} while(1);
+}
+
+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 4;
+}
+
+void fn_59508()
+{
+	fprintf(stderr,"%s\n", __func__);
+}
+
+void extract_lz_file(unsigned char *buf, unsigned char *name)
+{
+	unsigned char *r3;
+	unsigned int r5;
 	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];
 
@@ -484,14 +670,15 @@ void extract_lz_file(unsigned char *buf, unsigned char *name)
 	fn_59560(0x1005);
 
 	if (*((unsigned int*)r11) != LZ_MAGIC)
-		fn_59788();
+		fn_59788(__func__);
+
 	r3 = r11 + 4;
 	r5 = *((unsigned int*)r3);
 	printf(", Length: %d\n", r5);
 
 	r3 = r7 + r5;
 	if (r3 > r10)
-		fn_59788();
+		fn_59788(__func__);
 	
 	struct1.start = r11 + 8;
 	struct1.stop = r5 + r11;
@@ -503,6 +690,14 @@ 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(__func__);
+	
+	fn_59508();
+
 	free(r7);
 }