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fix(mods): fingerprint CUE data track only

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This commit is contained in:
Matthew Stanley
2026-07-25 20:49:55 -07:00
parent 35c1859cf4
commit 62a80eab30
3 changed files with 29 additions and 59 deletions
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runtime/src/mod_runtime.cpp
+16 -58
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@@ -1,5 +1,6 @@
#include "mod_runtime.h"
#include "disc_path.h"
#include "mod_packages.h"
#include "psx_sha256.h"
@@ -17,7 +18,6 @@
#include <iomanip>
#include <map>
#include <sstream>
#include <set>
#include <string>
#include <system_error>
#include <vector>
@@ -119,66 +119,24 @@ bool sha256_file(const std::filesystem::path& path, std::string& out,
std::string* error) {
out.clear();
if (path.empty()) return true;
std::vector<std::filesystem::path> inputs{path};
std::string extension = path.extension().string();
std::transform(extension.begin(), extension.end(), extension.begin(),
[](unsigned char c) { return (char)std::tolower(c); });
if (extension == ".cue") {
std::ifstream cue(path);
if (!cue) {
if (error) *error = "cannot fingerprint image: " + path.string();
return false;
}
inputs.clear();
std::set<std::filesystem::path> seen;
std::string line;
while (std::getline(cue, line)) {
size_t at = line.find_first_not_of(" \t");
if (at == std::string::npos || line.size() - at < 4) continue;
std::string keyword = line.substr(at, 4);
std::transform(keyword.begin(), keyword.end(), keyword.begin(),
[](unsigned char c) { return (char)std::toupper(c); });
if (keyword != "FILE") continue;
at += 4;
at = line.find_first_not_of(" \t", at);
if (at == std::string::npos) continue;
std::string name;
if (line[at] == '"') {
const size_t end = line.find('"', at + 1);
if (end == std::string::npos) continue;
name = line.substr(at + 1, end - at - 1);
} else {
const size_t end = line.find_first_of(" \t", at);
name = line.substr(at, end - at);
}
const std::filesystem::path input =
(path.parent_path() / name).lexically_normal();
if (seen.insert(input).second) inputs.push_back(input);
}
if (inputs.empty()) {
if (error) *error = "CUE has no FILE entries: " + path.string();
return false;
}
}
const std::filesystem::path input = resolve_disc_path(path).data;
psx_sha256_ctx hash;
psx_sha256_init(&hash);
std::array<uint8_t, 1024 * 1024> buffer{};
for (const std::filesystem::path& input : inputs) {
std::ifstream file(input, std::ios::binary);
if (!file) {
if (error) *error = "cannot fingerprint image: " + input.string();
return false;
}
while (file) {
file.read((char*)buffer.data(), (std::streamsize)buffer.size());
const std::streamsize got = file.gcount();
if (got > 0) psx_sha256_update(&hash, buffer.data(), (size_t)got);
}
if (!file.eof()) {
if (error) *error =
"cannot finish fingerprinting image: " + input.string();
return false;
}
std::ifstream file(input, std::ios::binary);
if (!file) {
if (error) *error = "cannot fingerprint image: " + input.string();
return false;
}
while (file) {
file.read((char*)buffer.data(), (std::streamsize)buffer.size());
const std::streamsize got = file.gcount();
if (got > 0) psx_sha256_update(&hash, buffer.data(), (size_t)got);
}
if (!file.eof()) {
if (error) *error =
"cannot finish fingerprinting image: " + input.string();
return false;
}
uint8_t digest[32];
psx_sha256_final(&hash, digest);