]> cvs.zerfleddert.de Git - rsbs2/blobdiff - rsb-lz.c
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[rsbs2] / rsb-lz.c
index e43b74b21552134921aa8f0193b761e7d7dec06c..e009a4f8ad2eec8545629e244e6539778746fae7 100644 (file)
--- a/rsb-lz.c
+++ b/rsb-lz.c
@@ -1,8 +1,14 @@
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <limits.h>
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <strings.h>
 #include <string.h>
+#include <unistd.h>
 #include <errno.h>
+#include <libgen.h>
 #include "rsb-crc.h"
 #include "rsb-lz.h"
 
  * 59b80:      46335053        undefined
  */
 
-void fn_59560(unsigned int arg1)
+void fn_59788(const char *fname)
 {
-}
-
-void fn_59578(unsigned int arg1, unsigned int arg2, unsigned int arg3, unsigned int arg4)
-{
-}
-
-void fn_59788()
-{
-       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 */
 };
 
-unsigned int fn_59848(struct s_59b78 *data)
+unsigned char fn_597c8(struct s_59b78 *r6_data)
 {
-       return 0;
+       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;
 }
 
-unsigned int fn_598b4(struct s_59b78 *data, unsigned int arg2)
+unsigned int fn_59848(struct s_59b78 *r6_data)
 {
-       return 0;
+       unsigned char r1;
+       unsigned char r2;
+       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;
+       while (r6 != 0) {
+               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;
+               }
+       }
+
+       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[])
+void fn_5993c(struct s_59b78 *r10_data, unsigned int r13_mem[])
 {
        unsigned int r5;
        unsigned int r2;
-       unsigned int r4;
-       unsigned char arr_59b64[1024];
+       unsigned char r4;
+       unsigned int r6;
+       unsigned int r7;
+       unsigned int r11;
+       unsigned char arr_59b64[2048];
 
        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 */
+       while (1) {
+               while (1) {
+                       r2 = fn_59848(r10_data);
+                       if (r2 == 0)
+                               break;
+
+                       r2 = fn_598b4(r10_data, 8) & 0xff;
+                       r4 = r2;
+
+                       fn_5980c(r4, r13_mem);
+                       arr_59b64[r5] = r4 & 0xff;
+                       r2 = r5 + 1;
+                       r2 = r2 << 22;
+                       r2 = r2 >> 22;
+                       r5 = r2;
+               }
 
+               r11 = fn_598b4(r10_data, 0x0a);
+               if(r11 == 0)
+                       return;
+
+               r2 = fn_598b4(r10_data, 0x04);
+               r7 = r2 + 1;
+               r6 = 0;
+               while (r6 <= r7) {
+                       r2 = r6 + r11;
+                       r2 = r2 << 22;
+                       r2 = r2 >> 22;
+                       r4 = arr_59b64[r2];
+                       fn_5980c(r4, r13_mem);
+                       arr_59b64[r5] = r4;
+                       r2 = r5 + 1;
+                       r2 = r2 << 22;
+                       r2 = r2 >> 22;
+                       r5 = r2;
+                       r6++;
+               }
+       }
 }
 
 unsigned int crc_check_59684(unsigned char *arg1, unsigned int arg2, unsigned int magic)
@@ -501,9 +615,11 @@ unsigned int crc_check_59684(unsigned char *arg1, unsigned int arg2, unsigned in
                return 1;
 #endif
 
+       /* ??? */
        r4 = *((unsigned int*)arg1 + 0x20);
        r5 = *((unsigned int*)arg1 + 0x24);
 
+       printf("magic: 0x%08x <-> 0x%08x\n", r5, magic);
        if (r5 != magic)
                return 2;
        
@@ -519,11 +635,73 @@ unsigned int crc_check_59684(unsigned char *arg1, unsigned int arg2, unsigned in
        if (r3 == r5)
                return 0;
 
-       return 0;
+       return 4;
 }
 
-void fn_59508()
+void mkdir_p(char *dir)
 {
+       char *copy, *parent;
+
+       if ((dir == NULL) || (!strcmp(dir, ".")))
+               return;
+
+       if ((copy = strdup(dir)) == NULL) {
+               perror("strdup");
+               exit(1);
+       }
+       parent = dirname(copy);
+       mkdir_p(parent);
+
+       errno = 0;
+       if (mkdir(dir, 0755) == -1) {
+               if (errno != EEXIST) {
+                       fprintf(stderr, "%s: ", dir);
+                       perror("mkdir");
+                       exit(1);
+               }
+       }
+       free(copy);
+}
+
+void write_file(char *fname, unsigned char *buf, int len)
+{
+       char filename[PATH_MAX];
+       char *filename_c, *dirn;
+       int fd;
+       int remaining;
+       int ret;
+
+       strcpy(filename, "extracted/");
+       strcat(filename, fname);
+
+       if ((filename_c = strdup(filename)) == NULL) {
+               perror("strdup");
+               exit(1);
+       }
+       dirn = dirname(filename_c);
+       mkdir_p(dirn);
+       free(filename_c);
+
+       if ((fd = open(filename, O_WRONLY|O_CREAT, 0644)) == -1) {
+               fprintf(stderr, "%s: ", filename);
+               perror("open");
+               exit(1);
+       }
+
+       remaining = len;
+
+       while(remaining) {
+               ret = write(fd, buf + (len - remaining), remaining);
+               if (ret < 0) {
+                       perror("write");
+                       exit(1);
+               }
+               remaining -= ret;
+       }
+
+       printf(", %s written.\n", filename);
+
+       close(fd);
 }
 
 void extract_lz_file(unsigned char *buf, unsigned char *name)
@@ -536,29 +714,23 @@ void extract_lz_file(unsigned char *buf, unsigned char *name)
        struct s_59b78 struct1;
        unsigned int arr_59b7c[1024];
 
-       r7 = malloc(1024*1024*1024);
-       r10 = r7 + (1024*1024*1024);
+       if (*((unsigned int*)r11) != LZ_MAGIC)
+               fn_59788(__func__);
 
-       if (r7 == NULL) {
+       r3 = r11 + 4;
+       r5 = *((unsigned int*)r3);
+       printf(", length: %d", r5);
+
+       if ((r7 = malloc(r5)) == NULL) {
                perror("malloc");
                exit(1);
        }
-
-       fn_59578(0, 0, 0x3f, 0x33);
-       fn_59578(4, 0x10000000, 0x33, 0x366);
-       fn_59578(5, 0x14000000, 0x1b, 0x733);
-       fn_59578(7, 0xc0000000, 0x3b, 0x33);
-       fn_59560(0x1005);
-
-       if (*((unsigned int*)r11) != LZ_MAGIC)
-               fn_59788();
-       r3 = r11 + 4;
-       r5 = *((unsigned int*)r3);
-       printf(", Length: %d\n", r5);
+       r10 = r7 + r5;
+       bzero(r7, r5);
 
        r3 = r7 + r5;
        if (r3 > r10)
-               fn_59788();
+               fn_59788(__func__);
        
        struct1.start = r11 + 8;
        struct1.stop = r5 + r11;
@@ -570,14 +742,19 @@ void extract_lz_file(unsigned char *buf, unsigned char *name)
 
        fn_5993c(&struct1, arr_59b7c);
 
+#if 0
+       /* This seems to still be completely broken */
        r3 = r7 + 0x20;
        r5 = *((unsigned int*)r3);
 
-       if (crc_check_59684(r7, r5, 0x46335053) != 0)
-               fn_59788();
-       
-       fn_59508();
+       if ((ret = crc_check_59684(r7, r5, 0x46335053)) != 0) {
+               printf("crc_check return: %d\n", ret);
+               fn_59788(__func__);
+       }
+#endif
 
+       write_file((char*)name, r7, r5);
+       
        free(r7);
 }
 
@@ -595,13 +772,16 @@ void search_lz_sections(unsigned char *fw, int len)
                        j--;
                        while (j > fw) {
                                if (*j == 0x00) {
+                                       if ( *(j+1) != '/') {
+                                               printf("ignoring...\n");
+                                               break;
+                                       }
                                        printf("%s", j+1);
                                        extract_lz_file(fw + i, j+1);
                                        break;
                                }
                                j--;
                        }
-                       printf("\n");
                }
        }
 }
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