Initial implementation of code signing routines

This changes integrates code signing steps into a buildbot worker
process.

The configuration requires having a separate machine running with
a shared folder access between the signing machine and worker machine.

Actual signing is happening as a "POST-INSTALL" script run by CMake,
which allows to sign any binary which ends up in the final bundle.
Additionally, such way allows to avoid signing binaries in the build
folder (if we were signing as a built process, which iwas another
alternative).
Such complexity is needed on platforms which are using CPack to
generate final bundle: CPack runs INSTALL target into its own location,
so it is useless to run signing on a folder which is considered INSTALL
by the buildbot worker.

There is a signing script which can be used as a standalone tool,
making it possible to hook up signing for macOS's bundler.

There is a dummy Linux signer implementation, which can be activated
by returning True from mock_codesign in linux_code_signer.py.
Main purpose of this signer is to give an ability to develop the
scripts on Linux environment, without going to Windows VM.

The code is based on D6036 from Nathan Letwory.

Differential Revision: https://developer.blender.org/D6216

1 files changed, 44 insertions, 0 deletions

diff --git a/build_files/buildbot/slave_codesign.cmake b/build_files/buildbot/slave_codesign.cmake
new file mode 100644
index 00000000000..2c3b58c08c0
--- /dev/null
+++ b/build_files/buildbot/slave_codesign.cmake
@@ -0,0 +1,44 @@
+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+# This is a script which is used as POST-INSTALL one for regular CMake's
+# INSTALL target.
+# It is used by buildbot workers to sign every binary which is going into
+# the final buundle.
+
+# On Windows Python 3 there only is python.exe, no python3.exe.
+#
+# On other platforms it is possible to have python2 and python3, and a
+# symbolic link to python to either of them. So on those platforms use
+# an explicit Python version.
+if(WIN32)
+  set(PYTHON_EXECUTABLE python)
+else()
+  set(PYTHON_EXECUTABLE python3)
+endif()
+
+execute_process(
+  COMMAND ${PYTHON_EXECUTABLE} "${CMAKE_CURRENT_LIST_DIR}/slave_codesign.py"
+          "${CMAKE_INSTALL_PREFIX}"
+  WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
+  RESULT_VARIABLE exit_code
+)
+
+if(NOT exit_code EQUAL "0")
+    message( FATAL_ERROR "Non-zero exit code of codesign tool")
+endif()