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-rw-r--r--src/core/hle/service/apt/apt.cpp103
-rw-r--r--src/core/hle/service/apt/apt.h40
-rw-r--r--src/core/hle/service/apt/apt_a.cpp4
-rw-r--r--src/core/hle/service/apt/apt_s.cpp4
-rw-r--r--src/core/hle/service/apt/apt_u.cpp4
5 files changed, 149 insertions, 6 deletions
diff --git a/src/core/hle/service/apt/apt.cpp b/src/core/hle/service/apt/apt.cpp
index 615fe31ea..e57b19c2d 100644
--- a/src/core/hle/service/apt/apt.cpp
+++ b/src/core/hle/service/apt/apt.cpp
@@ -18,6 +18,8 @@
#include "core/hle/service/fs/archive.h"
#include "core/hle/service/ptm/ptm.h"
#include "core/hle/service/service.h"
+#include "core/hw/aes/ccm.h"
+#include "core/hw/aes/key.h"
namespace Service {
namespace APT {
@@ -470,6 +472,107 @@ void GetStartupArgument(Service::Interface* self) {
cmd_buff[2] = 0;
}
+void Wrap(Service::Interface* self) {
+ IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x46, 4, 4);
+ const u32 output_size = rp.Pop<u32>();
+ const u32 input_size = rp.Pop<u32>();
+ const u32 nonce_offset = rp.Pop<u32>();
+ u32 nonce_size = rp.Pop<u32>();
+ size_t desc_size;
+ IPC::MappedBufferPermissions desc_permission;
+ const VAddr input = rp.PopMappedBuffer(&desc_size, &desc_permission);
+ ASSERT(desc_size == input_size && desc_permission == IPC::MappedBufferPermissions::R);
+ const VAddr output = rp.PopMappedBuffer(&desc_size, &desc_permission);
+ ASSERT(desc_size == output_size && desc_permission == IPC::MappedBufferPermissions::W);
+
+ // Note: real 3DS still returns SUCCESS when the sizes don't match. It seems that it doesn't
+ // check the buffer size and writes data with potential overflow.
+ ASSERT_MSG(output_size == input_size + HW::AES::CCM_MAC_SIZE,
+ "input_size (%d) doesn't match to output_size (%d)", input_size, output_size);
+
+ LOG_DEBUG(Service_APT, "called, output_size=%u, input_size=%u, nonce_offset=%u, nonce_size=%u",
+ output_size, input_size, nonce_offset, nonce_size);
+
+ // Note: This weird nonce size modification is verified against real 3DS
+ nonce_size = std::min<u32>(nonce_size & ~3, HW::AES::CCM_NONCE_SIZE);
+
+ // Reads nonce and concatenates the rest of the input as plaintext
+ HW::AES::CCMNonce nonce{};
+ Memory::ReadBlock(input + nonce_offset, nonce.data(), nonce_size);
+ u32 pdata_size = input_size - nonce_size;
+ std::vector<u8> pdata(pdata_size);
+ Memory::ReadBlock(input, pdata.data(), nonce_offset);
+ Memory::ReadBlock(input + nonce_offset + nonce_size, pdata.data() + nonce_offset,
+ pdata_size - nonce_offset);
+
+ // Encrypts the plaintext using AES-CCM
+ auto cipher = HW::AES::EncryptSignCCM(pdata, nonce, HW::AES::KeySlotID::APTWrap);
+
+ // Puts the nonce to the beginning of the output, with ciphertext followed
+ Memory::WriteBlock(output, nonce.data(), nonce_size);
+ Memory::WriteBlock(output + nonce_size, cipher.data(), cipher.size());
+
+ IPC::RequestBuilder rb = rp.MakeBuilder(1, 4);
+ rb.Push(RESULT_SUCCESS);
+
+ // Unmap buffer
+ rb.PushMappedBuffer(input, input_size, IPC::MappedBufferPermissions::R);
+ rb.PushMappedBuffer(output, output_size, IPC::MappedBufferPermissions::W);
+}
+
+void Unwrap(Service::Interface* self) {
+ IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x47, 4, 4);
+ const u32 output_size = rp.Pop<u32>();
+ const u32 input_size = rp.Pop<u32>();
+ const u32 nonce_offset = rp.Pop<u32>();
+ u32 nonce_size = rp.Pop<u32>();
+ size_t desc_size;
+ IPC::MappedBufferPermissions desc_permission;
+ const VAddr input = rp.PopMappedBuffer(&desc_size, &desc_permission);
+ ASSERT(desc_size == input_size && desc_permission == IPC::MappedBufferPermissions::R);
+ const VAddr output = rp.PopMappedBuffer(&desc_size, &desc_permission);
+ ASSERT(desc_size == output_size && desc_permission == IPC::MappedBufferPermissions::W);
+
+ // Note: real 3DS still returns SUCCESS when the sizes don't match. It seems that it doesn't
+ // check the buffer size and writes data with potential overflow.
+ ASSERT_MSG(output_size == input_size - HW::AES::CCM_MAC_SIZE,
+ "input_size (%d) doesn't match to output_size (%d)", input_size, output_size);
+
+ LOG_DEBUG(Service_APT, "called, output_size=%u, input_size=%u, nonce_offset=%u, nonce_size=%u",
+ output_size, input_size, nonce_offset, nonce_size);
+
+ // Note: This weird nonce size modification is verified against real 3DS
+ nonce_size = std::min<u32>(nonce_size & ~3, HW::AES::CCM_NONCE_SIZE);
+
+ // Reads nonce and cipher text
+ HW::AES::CCMNonce nonce{};
+ Memory::ReadBlock(input, nonce.data(), nonce_size);
+ u32 cipher_size = input_size - nonce_size;
+ std::vector<u8> cipher(cipher_size);
+ Memory::ReadBlock(input + nonce_size, cipher.data(), cipher_size);
+
+ // Decrypts the ciphertext using AES-CCM
+ auto pdata = HW::AES::DecryptVerifyCCM(cipher, nonce, HW::AES::KeySlotID::APTWrap);
+
+ IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
+ if (!pdata.empty()) {
+ // Splits the plaintext and put the nonce in between
+ Memory::WriteBlock(output, pdata.data(), nonce_offset);
+ Memory::WriteBlock(output + nonce_offset, nonce.data(), nonce_size);
+ Memory::WriteBlock(output + nonce_offset + nonce_size, pdata.data() + nonce_offset,
+ pdata.size() - nonce_offset);
+ rb.Push(RESULT_SUCCESS);
+ } else {
+ LOG_ERROR(Service_APT, "Failed to decrypt data");
+ rb.Push(ResultCode(static_cast<ErrorDescription>(1), ErrorModule::PS,
+ ErrorSummary::WrongArgument, ErrorLevel::Status));
+ }
+
+ // Unmap buffer
+ rb.PushMappedBuffer(input, input_size, IPC::MappedBufferPermissions::R);
+ rb.PushMappedBuffer(output, output_size, IPC::MappedBufferPermissions::W);
+}
+
void CheckNew3DSApp(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
diff --git a/src/core/hle/service/apt/apt.h b/src/core/hle/service/apt/apt.h
index 80325361f..e63b61450 100644
--- a/src/core/hle/service/apt/apt.h
+++ b/src/core/hle/service/apt/apt.h
@@ -137,6 +137,46 @@ void Initialize(Service::Interface* self);
void GetSharedFont(Service::Interface* self);
/**
+ * APT::Wrap service function
+ * Inputs:
+ * 1 : Output buffer size
+ * 2 : Input buffer size
+ * 3 : Nonce offset to the input buffer
+ * 4 : Nonce size
+ * 5 : Buffer mapping descriptor ((input_buffer_size << 4) | 0xA)
+ * 6 : Input buffer address
+ * 7 : Buffer mapping descriptor ((input_buffer_size << 4) | 0xC)
+ * 8 : Output buffer address
+ * Outputs:
+ * 1 : Result of function, 0 on success, otherwise error code
+ * 2 : Buffer unmapping descriptor ((input_buffer_size << 4) | 0xA)
+ * 3 : Input buffer address
+ * 4 : Buffer unmapping descriptor ((input_buffer_size << 4) | 0xC)
+ * 5 : Output buffer address
+ */
+void Wrap(Service::Interface* self);
+
+/**
+ * APT::Unwrap service function
+ * Inputs:
+ * 1 : Output buffer size
+ * 2 : Input buffer size
+ * 3 : Nonce offset to the output buffer
+ * 4 : Nonce size
+ * 5 : Buffer mapping descriptor ((input_buffer_size << 4) | 0xA)
+ * 6 : Input buffer address
+ * 7 : Buffer mapping descriptor ((input_buffer_size << 4) | 0xC)
+ * 8 : Output buffer address
+ * Outputs:
+ * 1 : Result of function, 0 on success, otherwise error code
+ * 2 : Buffer unmapping descriptor ((input_buffer_size << 4) | 0xA)
+ * 3 : Input buffer address
+ * 4 : Buffer unmapping descriptor ((input_buffer_size << 4) | 0xC)
+ * 5 : Output buffer address
+ */
+void Unwrap(Service::Interface* self);
+
+/**
* APT::NotifyToWait service function
* Inputs:
* 1 : AppID
diff --git a/src/core/hle/service/apt/apt_a.cpp b/src/core/hle/service/apt/apt_a.cpp
index 62dc2d61d..c496cba8d 100644
--- a/src/core/hle/service/apt/apt_a.cpp
+++ b/src/core/hle/service/apt/apt_a.cpp
@@ -78,8 +78,8 @@ const Interface::FunctionInfo FunctionTable[] = {
{0x00430040, NotifyToWait, "NotifyToWait"},
{0x00440000, GetSharedFont, "GetSharedFont"},
{0x00450040, nullptr, "GetWirelessRebootInfo"},
- {0x00460104, nullptr, "Wrap"},
- {0x00470104, nullptr, "Unwrap"},
+ {0x00460104, Wrap, "Wrap"},
+ {0x00470104, Unwrap, "Unwrap"},
{0x00480100, nullptr, "GetProgramInfo"},
{0x00490180, nullptr, "Reboot"},
{0x004A0040, nullptr, "GetCaptureInfo"},
diff --git a/src/core/hle/service/apt/apt_s.cpp b/src/core/hle/service/apt/apt_s.cpp
index effd23dce..ec5668d05 100644
--- a/src/core/hle/service/apt/apt_s.cpp
+++ b/src/core/hle/service/apt/apt_s.cpp
@@ -78,8 +78,8 @@ const Interface::FunctionInfo FunctionTable[] = {
{0x00430040, NotifyToWait, "NotifyToWait"},
{0x00440000, GetSharedFont, "GetSharedFont"},
{0x00450040, nullptr, "GetWirelessRebootInfo"},
- {0x00460104, nullptr, "Wrap"},
- {0x00470104, nullptr, "Unwrap"},
+ {0x00460104, Wrap, "Wrap"},
+ {0x00470104, Unwrap, "Unwrap"},
{0x00480100, nullptr, "GetProgramInfo"},
{0x00490180, nullptr, "Reboot"},
{0x004A0040, nullptr, "GetCaptureInfo"},
diff --git a/src/core/hle/service/apt/apt_u.cpp b/src/core/hle/service/apt/apt_u.cpp
index e06084a1e..9dd002590 100644
--- a/src/core/hle/service/apt/apt_u.cpp
+++ b/src/core/hle/service/apt/apt_u.cpp
@@ -78,8 +78,8 @@ const Interface::FunctionInfo FunctionTable[] = {
{0x00430040, NotifyToWait, "NotifyToWait"},
{0x00440000, GetSharedFont, "GetSharedFont"},
{0x00450040, nullptr, "GetWirelessRebootInfo"},
- {0x00460104, nullptr, "Wrap"},
- {0x00470104, nullptr, "Unwrap"},
+ {0x00460104, Wrap, "Wrap"},
+ {0x00470104, Unwrap, "Unwrap"},
{0x00480100, nullptr, "GetProgramInfo"},
{0x00490180, nullptr, "Reboot"},
{0x004A0040, nullptr, "GetCaptureInfo"},
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 12:09:09 +0100