uidsys-output.c - very basic C utility to output a list of all titles found in a Wii's uid.sys

uidsys-output.c

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

#ifndef SHOULD_BE_BE
#define BE16(i) ((((i) & 0xFF) << 8 | ((i) >> 8) & 0xFF) & 0xFFFF)
#define BE(i)   (((i) & 0xff) << 24 | ((i) & 0xff00) << 8 | ((i) & 0xff0000) >> 8 | ((i) >> 24) & 0xff)
#define BE64(i) (BE((i) & 0xFFFFFFFF) << 32 | BE(((i) >> 32) & 0xFFFFFFFF))
#else
#define BE16(i) i
#define BE(i) i
#define BE64(i) i
#endif

typedef struct _uid_entry {
    union {
        uint64_t title_id;
        struct {
            uint32_t title_type;
            uint32_t title_code;
        };
    };
    uint16_t padding;
    uint16_t uid;
} __attribute__((__packed__)) uid_entry;

int a = sizeof(uid_entry);

char *get_title_type_name(uint32_t type) {
    switch (type) {
        case 0x00000001:
            return "System Title";
        case 0x00010000:
            return "Disc Game";
        case 0x00010001:
            return "Channel";
        case 0x00010002:
            return "System Channel";
        case 0x00010004:
            return "Game w/ Channel";
        case 0x00010005:
            return "DLC Title";
        case 0x00010008:
            return "Hidden Title";
        default:
            return "Unknown";
    }
}

char *sanitize_title_id_name(uint32_t title_type, uint32_t title_code, char *buf) {
    if (BE(title_type) == 0x00000001) {
        uint32_t version = BE(title_code);
        if (version == 0x1)
            sprintf(buf, "boot2");
        else if (version == 0x2)
            sprintf(buf, "System Menu");
        else if (version == 0x100)
            sprintf(buf, "BC");
        else if (version == 0x101)
            sprintf(buf, "MIOS");
        else if (version < 0x100)
            sprintf(buf, "IOS%i", version);
        else
            sprintf(buf, "?");
    } else {
        for (int i = 0; i < 4; i++) {
            uint8_t thischar = (title_code >> (i * 8)) & 0xFF;
            char parsedchar = '.';
            if (thischar >= 0x20 && thischar < 0x7F)
                parsedchar = (char)thischar;
            buf[i] = parsedchar;
        }
        buf[4] = 0;
    }
    return buf;
}

int main(int argc, char **argv) {
    if (argc < 2) {
        printf("usage: %s uid.sys\n", argv[0]);
        return -1;
    }

    FILE *fp = fopen(argv[1], "rb");
    if (fp == NULL) {
        printf("can't open %s\n", argv[1]);
        return -1;
    }
    fseek(fp, 0, SEEK_END);
    int filesize = ftell(fp);
    fseek(fp, 0, SEEK_SET);

    uid_entry *buf = (uid_entry *)malloc(filesize);
    if (buf == NULL) {
        printf("failed to allocate buffer\n");
        fclose(fp);
        return -1;
    }
    fread(buf, 1, filesize, fp);
    fclose(fp);

    int total = filesize / sizeof(uid_entry);
    printf("%i entries in uid.sys:\n", total);
    for(int i = 0; i < total; i++) {
        char tid_name[16];
        uid_entry entry = buf[i];
        printf("%08x-%08x - %s - %s - UID: 0x%x\n",
            BE(entry.title_type), BE(entry.title_code),
            get_title_type_name(BE(entry.title_type)), sanitize_title_id_name(entry.title_type, entry.title_code, tid_name),
            BE16(entry.uid));
    }

    free(buf);
    return 0;
}