From f85f8db1f72ba270b8677d7ea237d2b24236bff1 Mon Sep 17 00:00:00 2001
From: Roel van de Kraats <roel@2getthere.eu>
Date: Fri, 12 Jul 2024 11:08:46 +0200
Subject: [PATCH] Use CMake/CPack to build binary and installation packages

---
 .gitignore     |  3 ++
 CMakeLists.txt | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++
 build.sh       |  9 ++++++
 3 files changed, 89 insertions(+)
 create mode 100644 CMakeLists.txt
 create mode 100755 build.sh

diff --git a/.gitignore b/.gitignore
index a53899f..a3df5ac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,6 @@
 *.dSYM/
 
 su-exec
+build
+*.deb
+*.rpm
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..ea68be6
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,77 @@
+cmake_minimum_required(VERSION 3.6)
+
+project(su-exec)
+
+include(GNUInstallDirs)
+
+set(CMAKE_CC_FLAGS "${CMAKE_CC_FLAGS} -Wall -Werror")
+
+add_executable(su-exec su-exec.c)
+install(TARGETS su-exec DESTINATION ${CMAKE_INSTALL_BINDIR})
+install(FILES README.md DESTINATION ${CMAKE_INSTALL_DOCDIR})
+
+set(SU_EXEC_VERSION "0.2")
+set(PATCH_VERSION "1")
+set(CPACK_PACKAGE_NAME su-exec)
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Switch user and group id, setgroups and exec")
+set(CPACK_PACKAGE_DESCRIPTION "Original implementation by Natanael Copa, CPack-ed by Roel van de Kraats")
+set(CPACK_PACKAGE_CONTACT "Roel van de Kraats <roel@2getthere.eu>")
+set(CPACK_PACKAGE_VENDOR "2getthere b.v. (https://www.2getthere.eu)")
+set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_SOURCE_DIR}/LICENSE")
+
+# Try to find distro id
+execute_process(COMMAND sh -c "grep '^ID=' /etc/os-release | sed -e 's/^.*=//g' -e 's/\"//g'" ERROR_QUIET OUTPUT_VARIABLE OS_ID)
+string(STRIP "${OS_ID}" OS_ID)
+
+# For Debian-based distros we want to create DEB packages.
+if("${OS_ID}" MATCHES "ubuntu|debian")
+    install(FILES LICENSE RENAME copyright DESTINATION ${CMAKE_INSTALL_DOCDIR})
+
+    set(CPACK_GENERATOR "DEB")
+    set(CPACK_DEB_COMPONENT_INSTALL "ON")
+    set(CPACK_PACKAGE_VERSION "${SU_EXEC_VERSION}-${PATCH_VERSION}")
+    set(CPACK_DEBIAN_PACKAGE_SECTION "misc")
+    set(CPACK_DEBIAN_PACKAGE_HOMEPAGE "https://github.com/2getthere/su-exec")
+    set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
+    string(TOLOWER "${CPACK_PACKAGE_NAME}" CPACK_DEBIAN_PACKAGE_NAME)
+    execute_process(COMMAND sh -c "(grep DISTRIB_CODENAME /etc/lsb-release 2>/dev/null || grep VERSION_CODENAME /etc/os-release) | sed 's/^.*=//g'" OUTPUT_VARIABLE OS_CODENAME)
+    string(STRIP "${OS_CODENAME}" OS_CODENAME)
+    execute_process(COMMAND dpkg --print-architecture OUTPUT_VARIABLE CPACK_PACKAGE_ARCHITECTURE)
+    string(STRIP "${CPACK_PACKAGE_ARCHITECTURE}" CPACK_PACKAGE_ARCHITECTURE)
+    set(FULL_VERSION "${CPACK_PACKAGE_VERSION}~${OS_CODENAME}_${CPACK_PACKAGE_ARCHITECTURE}")
+    string(TOLOWER "${CPACK_DEBIAN_PACKAGE_NAME}_${FULL_VERSION}.deb" CPACK_DEBIAN_FILE_NAME)
+
+# For Red Hat-based distros we want to create RPM packages.
+elseif("${OS_ID}" MATCHES "fedora|centos|rhel")
+    install(FILES LICENSE RENAME COPYING DESTINATION ${CMAKE_INSTALL_DOCDIR})
+
+    set(CPACK_GENERATOR "RPM")
+    set(CPACK_RPM_COMPONENT_INSTALL "ON")
+    set(CPACK_PACKAGE_VERSION "${SU_EXEC_VERSION}-${PATCH_VERSION}")
+    set(CPACK_RPM_PACKAGE_VERSION "${SU_EXEC_VERSION}")
+    set(CPACK_RPM_PACKAGE_RELEASE "${PATCH_VERSION}")
+    set(CPACK_RPM_PACKAGE_URL "https://github.com/2getthere/su-exec")
+    set(CPACK_RPM_PACKAGE_LICENSE "MIT")
+    set(CPACK_RPM_PACKAGE_DESCRIPTION "${CPACK_PACKAGE_DESCRIPTION}")
+    # Find dist tag
+    execute_process(COMMAND sh -c "grep ^VERSION_ID= /etc/os-release | sed -e 's/^.*=//g' -e 's/\"//g'" OUTPUT_VARIABLE OS_VERSION)
+    string(STRIP "${OS_VERSION}" OS_VERSION)
+    if("${OS_ID}" MATCHES "fedora")
+        set(CPACK_RPM_PACKAGE_RELEASE_DIST "fc${OS_VERSION}")
+    else()
+        set(CPACK_RPM_PACKAGE_RELEASE_DIST "el${OS_VERSION}")
+    endif()
+    # Find architecture
+    execute_process(COMMAND rpm --eval "%{_arch}" OUTPUT_VARIABLE CPACK_PACKAGE_ARCHITECTURE)
+    string(STRIP "${CPACK_PACKAGE_ARCHITECTURE}" CPACK_PACKAGE_ARCHITECTURE)
+    set(CPACK_RPM_PACKAGE_AUTOREQ ON)
+    set(VERSION_WITH_DIST "${CPACK_RPM_PACKAGE_VERSION}-${CPACK_RPM_PACKAGE_RELEASE}.${CPACK_RPM_PACKAGE_RELEASE_DIST}")
+    string(TOLOWER "${CPACK_PACKAGE_NAME}" CPACK_RPM_PACKAGE_NAME)
+    set(FULL_VERSION "${VERSION_WITH_DIST}.${CPACK_PACKAGE_ARCHITECTURE}")
+    string(TOLOWER "${CPACK_PACKAGE_NAME}-${FULL_VERSION}.rpm" CPACK_RPM_FILE_NAME)
+
+else()
+    message(WARNING "Could not determine type of package to create")
+endif()
+
+include(CPack)
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..55c08f8
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+set -e
+rm -rf build
+mkdir build
+cd build
+cmake -DCMAKE_BUILD_TYPE=Release ..
+make
+cpack
+mv -f *.rpm *.deb .. 2>/dev/null || true