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https://github.com/Atmosphere-NX/Atmosphere.git
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loader: improve verification terminology
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parent
b7d99b732a
commit
074364753f
7 changed files with 41 additions and 41 deletions
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@ -19,17 +19,17 @@
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namespace ams::fs {
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struct CodeInfo {
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struct CodeVerificationData {
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u8 signature[crypto::Rsa2048PssSha256Verifier::SignatureSize];
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u8 hash[crypto::Rsa2048PssSha256Verifier::HashSize];
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bool is_signed;
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u8 target_hash[crypto::Rsa2048PssSha256Verifier::HashSize];
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bool has_data;
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u8 reserved[3];
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};
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static_assert(sizeof(CodeInfo) == crypto::Rsa2048PssSha256Verifier::SignatureSize + crypto::Rsa2048PssSha256Verifier::HashSize + 4);
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static_assert(sizeof(CodeVerificationData) == crypto::Rsa2048PssSha256Verifier::SignatureSize + crypto::Rsa2048PssSha256Verifier::HashSize + 4);
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Result MountCode(CodeInfo *out, const char *name, const char *path, ncm::ProgramId program_id);
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Result MountCode(CodeVerificationData *out, const char *name, const char *path, ncm::ProgramId program_id);
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Result MountCodeForAtmosphereWithRedirection(CodeInfo *out, const char *name, const char *path, ncm::ProgramId program_id, bool is_hbl, bool is_specific);
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Result MountCodeForAtmosphere(CodeInfo *out, const char *name, const char *path, ncm::ProgramId program_id);
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Result MountCodeForAtmosphereWithRedirection(CodeVerificationData *out, const char *name, const char *path, ncm::ProgramId program_id, bool is_hbl, bool is_specific);
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Result MountCodeForAtmosphere(CodeVerificationData *out, const char *name, const char *path, ncm::ProgramId program_id);
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}
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@ -20,15 +20,15 @@ namespace ams::fs {
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namespace {
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Result OpenCodeFileSystemImpl(CodeInfo *out_code_info, std::unique_ptr<fsa::IFileSystem> *out, const char *path, ncm::ProgramId program_id) {
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Result OpenCodeFileSystemImpl(CodeVerificationData *out_verification_data, std::unique_ptr<fsa::IFileSystem> *out, const char *path, ncm::ProgramId program_id) {
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/* Print a path suitable for the remote service. */
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fssrv::sf::Path sf_path;
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R_TRY(FspPathPrintf(std::addressof(sf_path), "%s", path));
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/* Open the filesystem using libnx bindings. */
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static_assert(sizeof(CodeInfo) == sizeof(::FsCodeInfo));
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static_assert(sizeof(CodeVerificationData) == sizeof(::FsCodeInfo));
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::FsFileSystem fs;
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R_TRY(fsldrOpenCodeFileSystem(reinterpret_cast<::FsCodeInfo *>(out_code_info), program_id.value, sf_path.str, std::addressof(fs)));
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R_TRY(fsldrOpenCodeFileSystem(reinterpret_cast<::FsCodeInfo *>(out_verification_data), program_id.value, sf_path.str, std::addressof(fs)));
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/* Allocate a new filesystem wrapper. */
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auto fsa = std::make_unique<RemoteFileSystem>(fs);
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@ -62,12 +62,12 @@ namespace ams::fs {
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return OpenPackageFileSystemImpl(out, sf_path.str);
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}
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Result OpenSdCardCodeOrCodeFileSystemImpl(CodeInfo *out_code_info, std::unique_ptr<fsa::IFileSystem> *out, const char *path, ncm::ProgramId program_id) {
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Result OpenSdCardCodeOrCodeFileSystemImpl(CodeVerificationData *out_verification_data, std::unique_ptr<fsa::IFileSystem> *out, const char *path, ncm::ProgramId program_id) {
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/* If we can open an sd card code fs, use it. */
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R_SUCCEED_IF(R_SUCCEEDED(OpenSdCardCodeFileSystemImpl(out, program_id)));
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/* Otherwise, fall back to a normal code fs. */
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return OpenCodeFileSystemImpl(out_code_info, out, path, program_id);
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return OpenCodeFileSystemImpl(out_verification_data, out, path, program_id);
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}
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Result OpenHblCodeFileSystemImpl(std::unique_ptr<fsa::IFileSystem> *out) {
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@ -227,7 +227,7 @@ namespace ams::fs {
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public:
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AtmosphereCodeFileSystem() : initialized(false) { /* ... */ }
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Result Initialize(CodeInfo *out_code_info, const char *path, ncm::ProgramId program_id, bool is_hbl, bool is_specific) {
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Result Initialize(CodeVerificationData *out_verification_data, const char *path, ncm::ProgramId program_id, bool is_hbl, bool is_specific) {
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AMS_ABORT_UNLESS(!this->initialized);
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/* If we're hbl, we need to open a hbl fs. */
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@ -239,7 +239,7 @@ namespace ams::fs {
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/* Open the code filesystem. */
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std::unique_ptr<fsa::IFileSystem> fsa;
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R_TRY(OpenSdCardCodeOrCodeFileSystemImpl(out_code_info, std::addressof(fsa), path, program_id));
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R_TRY(OpenSdCardCodeOrCodeFileSystemImpl(out_verification_data, std::addressof(fsa), path, program_id));
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this->code_fs.emplace(std::move(fsa), program_id, is_specific);
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this->program_id = program_id;
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@ -275,7 +275,7 @@ namespace ams::fs {
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}
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Result MountCode(CodeInfo *out, const char *name, const char *path, ncm::ProgramId program_id) {
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Result MountCode(CodeVerificationData *out, const char *name, const char *path, ncm::ProgramId program_id) {
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/* Clear the output. */
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std::memset(out, 0, sizeof(*out));
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@ -293,7 +293,7 @@ namespace ams::fs {
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return fsa::Register(name, std::move(fsa));
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}
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Result MountCodeForAtmosphereWithRedirection(CodeInfo *out, const char *name, const char *path, ncm::ProgramId program_id, bool is_hbl, bool is_specific) {
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Result MountCodeForAtmosphereWithRedirection(CodeVerificationData *out, const char *name, const char *path, ncm::ProgramId program_id, bool is_hbl, bool is_specific) {
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/* Clear the output. */
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std::memset(out, 0, sizeof(*out));
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@ -314,7 +314,7 @@ namespace ams::fs {
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return fsa::Register(name, std::move(ams_code_fs));
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}
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Result MountCodeForAtmosphere(CodeInfo *out, const char *name, const char *path, ncm::ProgramId program_id) {
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Result MountCodeForAtmosphere(CodeVerificationData *out, const char *name, const char *path, ncm::ProgramId program_id) {
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/* Clear the output. */
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std::memset(out, 0, sizeof(*out));
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@ -58,15 +58,15 @@ namespace ams::ldr {
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}
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/* Mount the atmosphere code file system. */
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R_TRY(fs::MountCodeForAtmosphereWithRedirection(std::addressof(this->ams_code_info), AtmosphereCodeMountName, content_path, loc.program_id, this->override_status.IsHbl(), this->override_status.IsProgramSpecific()));
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R_TRY(fs::MountCodeForAtmosphereWithRedirection(std::addressof(this->ams_code_verification_data), AtmosphereCodeMountName, content_path, loc.program_id, this->override_status.IsHbl(), this->override_status.IsProgramSpecific()));
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this->mounted_ams = true;
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/* Mount the sd or base code file system. */
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R_TRY(fs::MountCodeForAtmosphere(std::addressof(this->sd_or_base_code_info), SdOrCodeMountName, content_path, loc.program_id));
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R_TRY(fs::MountCodeForAtmosphere(std::addressof(this->sd_or_base_code_verification_data), SdOrCodeMountName, content_path, loc.program_id));
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this->mounted_sd_or_code = true;
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/* Mount the base code file system. */
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if (R_SUCCEEDED(fs::MountCode(std::addressof(this->base_code_info), CodeMountName, content_path, loc.program_id))) {
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if (R_SUCCEEDED(fs::MountCode(std::addressof(this->base_code_verification_data), CodeMountName, content_path, loc.program_id))) {
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this->mounted_code = true;
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}
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@ -25,9 +25,9 @@ namespace ams::ldr {
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private:
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std::scoped_lock<os::Mutex> lk;
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cfg::OverrideStatus override_status;
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fs::CodeInfo ams_code_info;
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fs::CodeInfo sd_or_base_code_info;
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fs::CodeInfo base_code_info;
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fs::CodeVerificationData ams_code_verification_data;
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fs::CodeVerificationData sd_or_base_code_verification_data;
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fs::CodeVerificationData base_code_verification_data;
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Result result;
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bool has_status;
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bool mounted_ams;
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@ -47,16 +47,16 @@ namespace ams::ldr {
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return this->override_status;
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}
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const fs::CodeInfo &GetAtmosphereCodeInfo() const {
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return this->ams_code_info;
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const fs::CodeVerificationData &GetAtmosphereCodeVerificationData() const {
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return this->ams_code_verification_data;
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}
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const fs::CodeInfo &GetSdOrBaseCodeInfo() const {
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return this->sd_or_base_code_info;
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const fs::CodeVerificationData &GetSdOrBaseCodeVerificationData() const {
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return this->sd_or_base_code_verification_data;
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}
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const fs::CodeInfo &GetCodeInfo() const {
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return this->base_code_info;
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const fs::CodeVerificationData &GetCodeVerificationData() const {
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return this->base_code_verification_data;
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}
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private:
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Result Initialize(const ncm::ProgramLocation &loc);
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@ -107,7 +107,7 @@ namespace ams::ldr {
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Result ValidateAcidSignature(Meta *meta) {
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/* Loader did not check signatures prior to 10.0.0. */
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if (hos::GetVersion() < hos::Version_10_0_0) {
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meta->is_signed = false;
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meta->check_verification_data = false;
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return ResultSuccess();
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}
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@ -123,7 +123,7 @@ namespace ams::ldr {
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const bool is_signature_valid = crypto::VerifyRsa2048PssSha256(sig, sig_size, mod, mod_size, exp, exp_size, msg, msg_size);
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R_UNLESS(is_signature_valid || !IsEnabledProgramVerification(), ResultInvalidAcidSignature());
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meta->is_signed = is_signature_valid;
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meta->check_verification_data = is_signature_valid;
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return ResultSuccess();
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}
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@ -220,8 +220,8 @@ namespace ams::ldr {
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ON_SCOPE_EXIT { fs::CloseFile(file); };
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R_TRY(LoadMetaFromFile(file, &g_original_meta_cache));
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R_TRY(ValidateAcidSignature(&g_original_meta_cache.meta));
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meta->modulus = g_original_meta_cache.meta.modulus;
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meta->is_signed = g_original_meta_cache.meta.is_signed;
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meta->modulus = g_original_meta_cache.meta.modulus;
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meta->check_verification_data = g_original_meta_cache.meta.check_verification_data;
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}
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}
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@ -32,7 +32,7 @@ namespace ams::ldr {
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void *aci_kac;
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void *modulus;
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bool is_signed;
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bool check_verification_data;
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};
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/* Meta API. */
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@ -210,7 +210,7 @@ namespace ams::ldr {
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return ResultSuccess();
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}
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Result ValidateMeta(const Meta *meta, const ncm::ProgramLocation &loc, const fs::CodeInfo &code_info) {
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Result ValidateMeta(const Meta *meta, const ncm::ProgramLocation &loc, const fs::CodeVerificationData &code_verification_data) {
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/* Validate version. */
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R_TRY(ValidateProgramVersion(loc.program_id, meta->npdm->version));
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@ -222,15 +222,15 @@ namespace ams::ldr {
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R_TRY(caps::ValidateCapabilities(meta->acid_kac, meta->acid->kac_size, meta->aci_kac, meta->aci->kac_size));
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/* If we have data to validate, validate it. */
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if (code_info.is_signed && meta->is_signed) {
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const u8 *sig = code_info.signature;
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const size_t sig_size = sizeof(code_info.signature);
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if (code_verification_data.has_data && meta->check_verification_data) {
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const u8 *sig = code_verification_data.signature;
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const size_t sig_size = sizeof(code_verification_data.signature);
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const u8 *mod = static_cast<u8 *>(meta->modulus);
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const size_t mod_size = crypto::Rsa2048PssSha256Verifier::ModulusSize;
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const u8 *exp = fssystem::GetAcidSignatureKeyPublicExponent();
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const size_t exp_size = fssystem::AcidSignatureKeyPublicExponentSize;
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const u8 *hsh = code_info.hash;
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const size_t hsh_size = sizeof(code_info.hash);
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const u8 *hsh = code_verification_data.target_hash;
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const size_t hsh_size = sizeof(code_verification_data.target_hash);
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const bool is_signature_valid = crypto::VerifyRsa2048PssSha256WithHash(sig, sig_size, mod, mod_size, exp, exp_size, hsh, hsh_size);
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R_UNLESS(is_signature_valid, ResultInvalidNcaSignature());
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@ -596,7 +596,7 @@ namespace ams::ldr {
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R_TRY(LoadMetaFromCache(&meta, loc, override_status));
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/* Validate meta. */
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R_TRY(ValidateMeta(&meta, loc, mount.GetCodeInfo()));
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R_TRY(ValidateMeta(&meta, loc, mount.GetCodeVerificationData()));
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/* Load, validate NSOs. */
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R_TRY(LoadNsoHeaders(nso_headers, has_nso));
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