Switch CertStore .bdf extractor

bdf.c

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>

typedef struct Header {
	uint32_t Magic;
	uint32_t NumFiles;
} Header;

typedef struct Entry {
	uint32_t Index;
	uint32_t Revision;
	uint32_t Length;
	uint32_t Offset;
} Entry;

int main(int argc, char **argv) {
	if (argc != 2) {
		fprintf(stderr, "Usage: %s *.bdf\n", argv[0]);
		return 1;
	}

	FILE *in = fopen(argv[1], "rb");

	Header hdr;
	fread(&hdr, sizeof(hdr), 1, in);

	if (hdr.Magic != 'Tlss') {
		fputs("Error: Not a valid bdf file.", stderr);
		return 1;
	}

	Entry *ent = malloc(hdr.NumFiles * sizeof(Entry));
	fread(ent, sizeof *ent, hdr.NumFiles, in);

	char name[0x10];

	for (size_t i = 0; i < hdr.NumFiles; i++) {		
		sprintf(name, "0x%x.bin", ent[i].Index); 
		printf("Saving %s...\n", name);

		char *buf = malloc(ent[i].Length);
		FILE *out = fopen(name, "wb");

		fseek(in, ent[i].Offset + 8, 0);
		fread(buf, 1, ent[i].Length, in);
		fwrite(buf, 1, ent[i].Length, out);
		fclose(out);
		free(buf);
	}

	puts("\nDone!");
	fclose(in);

	return 0;
}