X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/rsbs2/blobdiff_plain/af1fed3a35f5616b5803f9a168a5170e5a7f85ca..a519eca7833d8a0bdc4646def0b33097d44b39ef:/rsb-lz.c diff --git a/rsb-lz.c b/rsb-lz.c index e43b74b..e009a4f 100644 --- a/rsb-lz.c +++ b/rsb-lz.c @@ -1,8 +1,14 @@ +#include +#include +#include +#include #include #include #include #include +#include #include +#include #include "rsb-crc.h" #include "rsb-lz.h" @@ -426,68 +432,176 @@ * 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"); } } }