device/trezor: webusb transport added, cmake fixes

- webusb transport based on libusb added. Provides direct access to Trezor via USB, no need for Trezor bridge.
- trezor protocol message handler improved, no recursion used. Ready for upcoming integration tests.
- libusb (for docker) bumped from v1.0.9 to v1.0.22, newer version required for webusb transport, for device enumeration.
- cmake improvements and fixes. Cmake Trezor checks are moved to a dedicated CheckTrezor.cmake file. In case of a problem Trezor is excluded from build.
- ifdefs made consistent to Ledger.
- UDP Transport enumeration disabled by default in release mode

1 files changed, 79 insertions, 0 deletions

diff --git a/cmake/CheckTrezor.cmake b/cmake/CheckTrezor.cmake
new file mode 100644
index 000000000..ea21237fd
--- /dev/null
+++ b/cmake/CheckTrezor.cmake
@@ -0,0 +1,79 @@
+OPTION(USE_DEVICE_TREZOR "Trezor support compilation" ON)
+OPTION(USE_DEVICE_TREZOR_LIBUSB "Trezor LibUSB compilation" ON)
+OPTION(USE_DEVICE_TREZOR_UDP_RELEASE "Trezor UdpTransport in release mode" OFF)
+
+# Use Trezor master switch
+if (USE_DEVICE_TREZOR)
+    # Protobuf is required to build protobuf messages for Trezor
+    include(FindProtobuf OPTIONAL)
+    find_package(Protobuf)
+    if(NOT Protobuf_FOUND)
+        message(STATUS "Could not find Protobuf")
+    endif()
+
+else()
+    message(STATUS "Trezor support disabled by USE_DEVICE_TREZOR")
+endif()
+
+if(Protobuf_FOUND AND USE_DEVICE_TREZOR)
+    if (NOT "$ENV{TREZOR_PYTHON}" STREQUAL "")
+        set(TREZOR_PYTHON "$ENV{TREZOR_PYTHON}" CACHE INTERNAL "Copied from environment variable TREZOR_PYTHON")
+    else()
+        find_package(Python QUIET COMPONENTS Interpreter)  # cmake 3.12+
+        if(Python_Interpreter_FOUND)
+            set(TREZOR_PYTHON "${Python_EXECUTABLE}")
+        endif()
+    endif()
+
+    if(NOT TREZOR_PYTHON)
+        find_package(PythonInterp)
+        if(PYTHONINTERP_FOUND AND PYTHON_EXECUTABLE)
+            set(TREZOR_PYTHON "${PYTHON_EXECUTABLE}")
+        endif()
+    endif()
+
+    if(NOT TREZOR_PYTHON)
+        message(STATUS "Trezor: Python not found")
+    endif()
+endif()
+
+# Try to build protobuf messages
+if(Protobuf_FOUND AND USE_DEVICE_TREZOR AND TREZOR_PYTHON)
+    set(ENV{PROTOBUF_INCLUDE_DIRS} "${Protobuf_INCLUDE_DIRS}")
+    set(ENV{PROTOBUF_PROTOC_EXECUTABLE} "${Protobuf_PROTOC_EXECUTABLE}")
+    execute_process(COMMAND ${TREZOR_PYTHON} tools/build_protob.py WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}/../src/device_trezor/trezor RESULT_VARIABLE RET OUTPUT_VARIABLE OUT ERROR_VARIABLE ERR)
+    if(RET)
+        message(WARNING "Trezor protobuf messages could not be regenerated (err=${RET}, python ${PYTHON})."
+                "OUT: ${OUT}, ERR: ${ERR}."
+                "Please read src/device_trezor/trezor/tools/README.md")
+    else()
+        message(STATUS "Trezor protobuf messages regenerated ${OUT}")
+        set(DEVICE_TREZOR_READY 1)
+        add_definitions(-DDEVICE_TREZOR_READY=1)
+
+        if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+            add_definitions(-DTREZOR_DEBUG=1)
+        endif()
+
+        if(USE_DEVICE_TREZOR_UDP_RELEASE)
+            add_definitions(-DWITH_DEVICE_TREZOR_UDP_RELEASE=1)
+        endif()
+
+        if (Protobuf_INCLUDE_DIR)
+            include_directories(${Protobuf_INCLUDE_DIR})
+        endif()
+
+        # LibUSB support, check for particular version
+        # Include support only if compilation test passes
+        if (USE_DEVICE_TREZOR_LIBUSB)
+            find_package(LibUSB)
+        endif()
+
+        if (LibUSB_COMPILE_TEST_PASSED)
+            add_definitions(-DHAVE_TREZOR_LIBUSB=1)
+            if(LibUSB_INCLUDE_DIRS)
+                include_directories(${LibUSB_INCLUDE_DIRS})
+            endif()
+        endif()
+    endif()
+endif()