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Code Issues Releases Activity

Clean up bisfile extraction

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This commit is contained in:
Such Meme, Many Skill 2020-05-15 16:07:23 +02:00
parent 6bc474a981
commit 9075f20854
2 changed files with 42 additions and 50 deletions
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84
source/tegraexplorer/fs/fsextractbis.c
View file

@ -13,25 +13,15 @@
#include "../utils/utils.h"
#include "fsactions.h"
u32 DecodeInt(u8* data) {
u32 out = 0;
for (int i = 0; i < 4; i++) {
out |= (data[i] << ((3 - i) * 8));
}
return out;
}
void copy_fil_size(FIL* in_src, FIL* out_src, int size_src){
u8* buff;
buff = calloc(16384, sizeof(u8));
buff = calloc(BUFSIZE, sizeof(u8));
int size = size_src;
int copysize;
while (size > 0){
copysize = MIN(16834, size);
copysize = MIN(BUFSIZE, size);
f_read(in_src, buff, copysize, NULL);
f_write(out_src, buff, copysize, NULL);
size -= copysize;
@ -48,56 +38,50 @@ void gen_part(int size, FIL* in, char *path){
f_close(&out);
}
const char *filenames[] = {
"BOOT0.bin",
"BOOT1.bin",
"BCPKG2-1-Normal-Main",
"BCPKG2-3-SafeMode-Main",
"BCPKG2-2-Normal-Sub",
"BCPKG2-4-SafeMode-Sub"
};
int extract_bis_file(char *path, char *outfolder){
FIL in;
int res;
u8 version[0x10];
u8 args;
u8 temp[0x4];
u32 filesizes[4];
char *tempPath;
BisFile header;
if ((res = f_open(&in, path, FA_READ | FA_OPEN_EXISTING))){
gfx_errDisplay("extract_bis_file", res, 0);
return -1;
}
f_read(&in, version, 0x10, NULL);
f_read(&in, &args, 1, NULL);
for (int i = 0; i < 4; i++){
f_read(&in, temp, 4, NULL);
filesizes[i] = DecodeInt(temp);
}
gfx_printf("Version: %s\n\n", version);
if (args & BOOT0_ARG){
gfx_printf("\nExtracting BOOT0\n");
gen_part(filesizes[0], &in, fsutil_getnextloc(outfolder, "BOOT0.bin"));
}
if (args & BOOT1_ARG){
gfx_printf("Extracting BOOT1\n");
gen_part(filesizes[1], &in, fsutil_getnextloc(outfolder, "BOOT1.bin"));
}
if (args & BCPKG2_1_ARG){
utils_copystring(fsutil_getnextloc(outfolder, "BCPKG2-1-Normal-Main"), &tempPath);
gfx_printf("Extracting BCPKG2_1/2\n");
gen_part(filesizes[2], &in, tempPath);
fsact_copy(tempPath, fsutil_getnextloc(outfolder, "BCPKG2-2-Normal-Sub"), COPY_MODE_PRINT);
RESETCOLOR;
free(tempPath);
}
f_read(&in, &header, sizeof(BisFile), NULL);
if (args & BCPKG2_3_ARG){
utils_copystring(fsutil_getnextloc(outfolder, "BCPKG2-3-SafeMode-Main"), &tempPath);
gfx_printf("Extracting BCPKG2_3/4\n");
for (int i = 0; i < 4; i++)
header.sizes[i] = FLIPU32(header.sizes[i]);
gen_part(filesizes[3], &in, tempPath);
fsact_copy(tempPath, fsutil_getnextloc(outfolder, "BCPKG2-4-SafeMode-Sub"), COPY_MODE_PRINT);
gfx_printf("Version: %s\n\n", header.version);
// Loop to actually extract stuff
for (int i = 0; i < 4; i++){
if (!(header.args & (BIT((7 - i)))))
continue;
gfx_printf("Extracting %s\n", filenames[i]);
gen_part(header.sizes[i], &in, fsutil_getnextloc(outfolder, filenames[i]));
}
// Loop to copy pkg2_1->2 and pkg2_3->4
for (int i = 4; i < 6; i++){
if (!(header.args & BIT((9 - i))))
continue;
utils_copystring(fsutil_getnextloc(outfolder, filenames[i - 2]), &tempPath);
gfx_printf("Copying %s\n", filenames[i]);
fsact_copy(tempPath, fsutil_getnextloc(outfolder, filenames[i]), COPY_MODE_PRINT);
RESETCOLOR;
free(tempPath);
}

8
source/tegraexplorer/fs/fsutils.h
View file

@ -2,6 +2,14 @@
#include "../common/types.h"
#include "../../utils/types.h"
typedef struct {
u8 version[0x10];
u8 args;
u32 sizes[4];
} __attribute__((__packed__)) BisFile;
#define FLIPU32(in) ((in >> 24) & 0xFF) | ((in >> 8) & 0xFF00) | ((in << 8) & 0xFF0000) | ((in << 24) & 0xFF000000)
char *fsutil_getnextloc(const char *current, const char *add);
char *fsutil_getprevloc(char *current);
bool fsutil_checkfile(char* path);