5 files changed, 330 insertions, 3 deletions

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 1eb43d816..63a6da12e 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -1047,9 +1047,12 @@ add_library(core STATIC
     hle/service/spl/spl_module.h
     hle/service/spl/spl_results.h
     hle/service/spl/spl_types.h
+    hle/service/ssl/cert_store.cpp
+    hle/service/ssl/cert_store.h
     hle/service/ssl/ssl.cpp
     hle/service/ssl/ssl.h
     hle/service/ssl/ssl_backend.h
+    hle/service/ssl/ssl_types.h
     hle/service/usb/usb.cpp
     hle/service/usb/usb.h
     hle/service/vi/application_display_service.cpp
diff --git a/src/core/hle/service/ssl/cert_store.cpp b/src/core/hle/service/ssl/cert_store.cpp
new file mode 100644
index 000000000..b321e5d32
--- /dev/null
+++ b/src/core/hle/service/ssl/cert_store.cpp
@@ -0,0 +1,156 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/alignment.h"
+#include "core/core.h"
+#include "core/file_sys/content_archive.h"
+#include "core/file_sys/nca_metadata.h"
+#include "core/file_sys/registered_cache.h"
+#include "core/file_sys/romfs.h"
+#include "core/hle/service/filesystem/filesystem.h"
+#include "core/hle/service/ssl/cert_store.h"
+
+namespace Service::SSL {
+
+// https://switchbrew.org/wiki/SSL_services#CertStore
+
+CertStore::CertStore(Core::System& system) {
+    constexpr u64 CertStoreDataId = 0x0100000000000800ULL;
+
+    auto& fsc = system.GetFileSystemController();
+
+    // Attempt to load certificate data from storage
+    const auto nca =
+        fsc.GetSystemNANDContents()->GetEntry(CertStoreDataId, FileSys::ContentRecordType::Data);
+    if (!nca) {
+        return;
+    }
+    const auto romfs = nca->GetRomFS();
+    if (!romfs) {
+        return;
+    }
+    const auto extracted = FileSys::ExtractRomFS(romfs);
+    if (!extracted) {
+        LOG_ERROR(Service_SSL, "CertStore could not be extracted, corrupt RomFS?");
+        return;
+    }
+    const auto cert_store_file = extracted->GetFile("ssl_TrustedCerts.bdf");
+    if (!cert_store_file) {
+        LOG_ERROR(Service_SSL, "Failed to find trusted certificates in CertStore");
+        return;
+    }
+
+    // Read and verify the header.
+    CertStoreHeader header;
+    cert_store_file->ReadObject(std::addressof(header));
+
+    if (header.magic != Common::MakeMagic('s', 's', 'l', 'T')) {
+        LOG_ERROR(Service_SSL, "Invalid certificate store magic");
+        return;
+    }
+
+    // Ensure the file can contains the number of entries it says it does.
+    const u64 expected_size = sizeof(header) + sizeof(CertStoreEntry) * header.num_entries;
+    const u64 actual_size = cert_store_file->GetSize();
+    if (actual_size < expected_size) {
+        LOG_ERROR(Service_SSL, "Size mismatch, expected at least {} bytes, got {}", expected_size,
+                  actual_size);
+        return;
+    }
+
+    // Read entries.
+    std::vector<CertStoreEntry> entries(header.num_entries);
+    cert_store_file->ReadArray(entries.data(), header.num_entries, sizeof(header));
+
+    // Insert into memory store.
+    for (const auto& entry : entries) {
+        m_certs.emplace(entry.certificate_id,
+                        Certificate{
+                            .status = entry.certificate_status,
+                            .der_data = cert_store_file->ReadBytes(
+                                entry.der_size, entry.der_offset + sizeof(header)),
+                        });
+    }
+}
+
+CertStore::~CertStore() = default;
+
+template <typename F>
+void CertStore::ForEachCertificate(std::span<const CaCertificateId> certificate_ids, F&& f) {
+    if (certificate_ids.size() == 1 && certificate_ids.front() == CaCertificateId::All) {
+        for (const auto& entry : m_certs) {
+            f(entry);
+        }
+    } else {
+        for (const auto certificate_id : certificate_ids) {
+            const auto entry = m_certs.find(certificate_id);
+            if (entry == m_certs.end()) {
+                continue;
+            }
+            f(*entry);
+        }
+    }
+}
+
+Result CertStore::GetCertificates(u32* out_num_entries, std::span<u8> out_data,
+                                  std::span<const CaCertificateId> certificate_ids) {
+    // Ensure the buffer is large enough to hold the output.
+    u32 required_size;
+    R_TRY(this->GetCertificateBufSize(std::addressof(required_size), out_num_entries,
+                                      certificate_ids));
+    R_UNLESS(out_data.size_bytes() >= required_size, ResultUnknown);
+
+    // Make parallel arrays.
+    std::vector<BuiltInCertificateInfo> cert_infos;
+    std::vector<u8> der_datas;
+
+    const u32 der_data_offset = (*out_num_entries + 1) * sizeof(BuiltInCertificateInfo);
+    u32 cur_der_offset = der_data_offset;
+
+    // Fill output.
+    this->ForEachCertificate(certificate_ids, [&](auto& entry) {
+        const auto& [status, cur_der_data] = entry.second;
+        BuiltInCertificateInfo cert_info{
+            .cert_id = entry.first,
+            .status = status,
+            .der_size = cur_der_data.size(),
+            .der_offset = cur_der_offset,
+        };
+
+        cert_infos.push_back(cert_info);
+        der_datas.insert(der_datas.end(), cur_der_data.begin(), cur_der_data.end());
+        cur_der_offset += static_cast<u32>(cur_der_data.size());
+    });
+
+    // Append terminator entry.
+    cert_infos.push_back(BuiltInCertificateInfo{
+        .cert_id = CaCertificateId::All,
+        .status = TrustedCertStatus::Invalid,
+        .der_size = 0,
+        .der_offset = 0,
+    });
+
+    // Write to output span.
+    std::memcpy(out_data.data(), cert_infos.data(),
+                cert_infos.size() * sizeof(BuiltInCertificateInfo));
+    std::memcpy(out_data.data() + der_data_offset, der_datas.data(), der_datas.size());
+
+    R_SUCCEED();
+}
+
+Result CertStore::GetCertificateBufSize(u32* out_size, u32* out_num_entries,
+                                        std::span<const CaCertificateId> certificate_ids) {
+    // Output size is at least the size of the terminator entry.
+    *out_size = sizeof(BuiltInCertificateInfo);
+    *out_num_entries = 0;
+
+    this->ForEachCertificate(certificate_ids, [&](auto& entry) {
+        *out_size += sizeof(BuiltInCertificateInfo);
+        *out_size += Common::AlignUp(static_cast<u32>(entry.second.der_data.size()), 4);
+        (*out_num_entries)++;
+    });
+
+    R_SUCCEED();
+}
+
+} // namespace Service::SSL
diff --git a/src/core/hle/service/ssl/cert_store.h b/src/core/hle/service/ssl/cert_store.h
new file mode 100644
index 000000000..613d7b02a
--- /dev/null
+++ b/src/core/hle/service/ssl/cert_store.h
@@ -0,0 +1,42 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <map>
+#include <span>
+#include <vector>
+
+#include "core/hle/result.h"
+#include "core/hle/service/ssl/ssl_types.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::SSL {
+
+class CertStore {
+public:
+    explicit CertStore(Core::System& system);
+    ~CertStore();
+
+    Result GetCertificates(u32* out_num_entries, std::span<u8> out_data,
+                           std::span<const CaCertificateId> certificate_ids);
+    Result GetCertificateBufSize(u32* out_size, u32* out_num_entries,
+                                 std::span<const CaCertificateId> certificate_ids);
+
+private:
+    template <typename F>
+    void ForEachCertificate(std::span<const CaCertificateId> certs, F&& f);
+
+private:
+    struct Certificate {
+        TrustedCertStatus status;
+        std::vector<u8> der_data;
+    };
+
+    std::map<CaCertificateId, Certificate> m_certs;
+};
+
+} // namespace Service::SSL
diff --git a/src/core/hle/service/ssl/ssl.cpp b/src/core/hle/service/ssl/ssl.cpp
index 0fbb43057..008ee4492 100644
--- a/src/core/hle/service/ssl/ssl.cpp
+++ b/src/core/hle/service/ssl/ssl.cpp
@@ -5,11 +5,13 @@
 
 #include "core/core.h"
 #include "core/hle/result.h"
+#include "core/hle/service/cmif_serialization.h"
 #include "core/hle/service/ipc_helpers.h"
 #include "core/hle/service/server_manager.h"
 #include "core/hle/service/service.h"
 #include "core/hle/service/sm/sm.h"
 #include "core/hle/service/sockets/bsd.h"
+#include "core/hle/service/ssl/cert_store.h"
 #include "core/hle/service/ssl/ssl.h"
 #include "core/hle/service/ssl/ssl_backend.h"
 #include "core/internal_network/network.h"
@@ -492,13 +494,14 @@ private:
 
 class ISslService final : public ServiceFramework<ISslService> {
 public:
-    explicit ISslService(Core::System& system_) : ServiceFramework{system_, "ssl"} {
+    explicit ISslService(Core::System& system_)
+        : ServiceFramework{system_, "ssl"}, cert_store{system} {
         // clang-format off
         static const FunctionInfo functions[] = {
             {0, &ISslService::CreateContext, "CreateContext"},
             {1, nullptr, "GetContextCount"},
-            {2, nullptr, "GetCertificates"},
-            {3, nullptr, "GetCertificateBufSize"},
+            {2, D<&ISslService::GetCertificates>, "GetCertificates"},
+            {3, D<&ISslService::GetCertificateBufSize>, "GetCertificateBufSize"},
             {4, nullptr, "DebugIoctl"},
             {5, &ISslService::SetInterfaceVersion, "SetInterfaceVersion"},
             {6, nullptr, "FlushSessionCache"},
@@ -540,6 +543,22 @@ private:
         IPC::ResponseBuilder rb{ctx, 2};
         rb.Push(ResultSuccess);
     }
+
+    Result GetCertificateBufSize(
+        Out<u32> out_size, InArray<CaCertificateId, BufferAttr_HipcMapAlias> certificate_ids) {
+        LOG_INFO(Service_SSL, "called");
+        u32 num_entries;
+        R_RETURN(cert_store.GetCertificateBufSize(out_size, &num_entries, certificate_ids));
+    }
+
+    Result GetCertificates(Out<u32> out_num_entries, OutBuffer<BufferAttr_HipcMapAlias> out_buffer,
+                           InArray<CaCertificateId, BufferAttr_HipcMapAlias> certificate_ids) {
+        LOG_INFO(Service_SSL, "called");
+        R_RETURN(cert_store.GetCertificates(out_num_entries, out_buffer, certificate_ids));
+    }
+
+private:
+    CertStore cert_store;
 };
 
 void LoopProcess(Core::System& system) {
diff --git a/src/core/hle/service/ssl/ssl_types.h b/src/core/hle/service/ssl/ssl_types.h
new file mode 100644
index 000000000..dbc3dbf64
--- /dev/null
+++ b/src/core/hle/service/ssl/ssl_types.h
@@ -0,0 +1,107 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/common_types.h"
+
+namespace Service::SSL {
+
+enum class CaCertificateId : s32 {
+    All = -1,
+    NintendoCAG3 = 1,
+    NintendoClass2CAG3 = 2,
+    NintendoRootCAG4 = 3,
+    AmazonRootCA1 = 1000,
+    StarfieldServicesRootCertificateAuthorityG2 = 1001,
+    AddTrustExternalCARoot = 1002,
+    COMODOCertificationAuthority = 1003,
+    UTNDATACorpSGC = 1004,
+    UTNUSERFirstHardware = 1005,
+    BaltimoreCyberTrustRoot = 1006,
+    CybertrustGlobalRoot = 1007,
+    VerizonGlobalRootCA = 1008,
+    DigiCertAssuredIDRootCA = 1009,
+    DigiCertAssuredIDRootG2 = 1010,
+    DigiCertGlobalRootCA = 1011,
+    DigiCertGlobalRootG2 = 1012,
+    DigiCertHighAssuranceEVRootCA = 1013,
+    EntrustnetCertificationAuthority2048 = 1014,
+    EntrustRootCertificationAuthority = 1015,
+    EntrustRootCertificationAuthorityG2 = 1016,
+    GeoTrustGlobalCA2 = 1017,
+    GeoTrustGlobalCA = 1018,
+    GeoTrustPrimaryCertificationAuthorityG3 = 1019,
+    GeoTrustPrimaryCertificationAuthority = 1020,
+    GlobalSignRootCA = 1021,
+    GlobalSignRootCAR2 = 1022,
+    GlobalSignRootCAR3 = 1023,
+    GoDaddyClass2CertificationAuthority = 1024,
+    GoDaddyRootCertificateAuthorityG2 = 1025,
+    StarfieldClass2CertificationAuthority = 1026,
+    StarfieldRootCertificateAuthorityG2 = 1027,
+    thawtePrimaryRootCAG3 = 1028,
+    thawtePrimaryRootCA = 1029,
+    VeriSignClass3PublicPrimaryCertificationAuthorityG3 = 1030,
+    VeriSignClass3PublicPrimaryCertificationAuthorityG5 = 1031,
+    VeriSignUniversalRootCertificationAuthority = 1032,
+    DSTRootCAX3 = 1033,
+    USERTrustRsaCertificationAuthority = 1034,
+    ISRGRootX10 = 1035,
+    USERTrustEccCertificationAuthority = 1036,
+    COMODORsaCertificationAuthority = 1037,
+    COMODOEccCertificationAuthority = 1038,
+    AmazonRootCA2 = 1039,
+    AmazonRootCA3 = 1040,
+    AmazonRootCA4 = 1041,
+    DigiCertAssuredIDRootG3 = 1042,
+    DigiCertGlobalRootG3 = 1043,
+    DigiCertTrustedRootG4 = 1044,
+    EntrustRootCertificationAuthorityEC1 = 1045,
+    EntrustRootCertificationAuthorityG4 = 1046,
+    GlobalSignECCRootCAR4 = 1047,
+    GlobalSignECCRootCAR5 = 1048,
+    GlobalSignECCRootCAR6 = 1049,
+    GTSRootR1 = 1050,
+    GTSRootR2 = 1051,
+    GTSRootR3 = 1052,
+    GTSRootR4 = 1053,
+    SecurityCommunicationRootCA = 1054,
+    GlobalSignRootE4 = 1055,
+    GlobalSignRootR4 = 1056,
+    TTeleSecGlobalRootClass2 = 1057,
+    DigiCertTLSECCP384RootG5 = 1058,
+    DigiCertTLSRSA4096RootG5 = 1059,
+};
+
+enum class TrustedCertStatus : s32 {
+    Invalid = -1,
+    Removed = 0,
+    EnabledTrusted = 1,
+    EnabledNotTrusted = 2,
+    Revoked = 3,
+};
+
+struct BuiltInCertificateInfo {
+    CaCertificateId cert_id;
+    TrustedCertStatus status;
+    u64 der_size;
+    u64 der_offset;
+};
+static_assert(sizeof(BuiltInCertificateInfo) == 0x18, "BuiltInCertificateInfo has incorrect size.");
+
+struct CertStoreHeader {
+    u32 magic;
+    u32 num_entries;
+};
+static_assert(sizeof(CertStoreHeader) == 0x8, "CertStoreHeader has incorrect size.");
+
+struct CertStoreEntry {
+    CaCertificateId certificate_id;
+    TrustedCertStatus certificate_status;
+    u32 der_size;
+    u32 der_offset;
+};
+static_assert(sizeof(CertStoreEntry) == 0x10, "CertStoreEntry has incorrect size.");
+
+} // namespace Service::SSL