From: Michael Gernoth Date: Fri, 30 Jan 2009 20:32:56 +0000 (+0100) Subject: more parts of lz implemented X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/rsbs2/commitdiff_plain/af1fed3a35f5616b5803f9a168a5170e5a7f85ca?ds=sidebyside more parts of lz implemented --- 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 #include #include +#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); }