Add content

.clang-format

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+# See more @ https://clang.llvm.org/docs/ClangFormatStyleOptions.html
+BasedOnStyle: LLVM
+UseTab: Never
+IndentWidth: 2
+TabWidth: 2
+BreakBeforeBraces: Allman
+AllowShortIfStatementsOnASingleLine: false
+IndentCaseLabels: false
+ColumnLimit: 0
+AccessModifierOffset: -2
+PointerAlignment: Left
+NamespaceIndentation: None

.devcontainer/alpine/Dockerfile

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+FROM alpine:3.13
+
+RUN sed -i 's|dl-cdn.alpinelinux.org/alpine|ftp.acc.umu.se/mirror/alpinelinux.org|g' /etc/apk/repositories
+
+# base-tools for C and C++
+RUN apk update \
+    && apk add --no-cache \
+      autoconf \
+      automake \
+      cmake \
+      g++ \
+      gcc \
+      gdb \
+      libtool \
+      make \
+      pkgconf \
+    && rm -r /var/cache/apk/*
+
+# Other useful tools for C and C++
+RUN apk update \
+    && apk add --no-cache \
+      clang-extra-tools \
+      valgrind \
+    && rm -r /var/cache/apk/*
+
+# Other useful tools.
+RUN apk update \
+    && apk add --no-cache \
+      bash \
+      ca-certificates \
+      curl \
+      git \
+      sudo \
+    && rm -r /var/cache/apk/*
+
+# project-specific dependencies
+RUN apk update \
+    && apk add --no-cache \
+      openssl-dev \
+      musl-nscd-dev \
+    && rm -r /var/cache/apk/*
+
+RUN adduser \
+      -s /bin/bash \
+      -D \
+      build \
+    && addgroup sudo \
+    && adduser build sudo \
+    && echo -e "\n# Allow sudo without password\n%sudo ALL=(ALL) NOPASSWD:ALL\n" >> /etc/sudoers
+
+# Don't run as root inside container,
+# see https://github.com/microsoft/vscode-remote-release/issues/22
+ENV HOME /home/build
+ENV THIRD_PARTY_ROOT /home/build/third_party
+ENV DIST alpine
+USER build
+
+CMD ["/bin/bash", "-l"]

.devcontainer/devcontainer.json

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+// Ref: https://code.visualstudio.com/docs/remote/containers#_devcontainerjson-reference
+{
+  "name": "nss-http",
+  "image": "1nfiniteloop/nss-http-builder",
+  "extensions": [
+    "llvm-vs-code-extensions.vscode-clangd",
+    "ms-vscode.cmake-tools",
+    "twxs.cmake"
+  ],
+  "runArgs": [
+    "--name=nss-http.vscode",
+    "--volume=vscode.cache:/home/build",
+    "--cap-add=SYS_PTRACE",
+    "--security-opt",
+    "seccomp=unconfined"
+  ]
+}

.devcontainer/ubuntu/Dockerfile

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+FROM ubuntu:focal
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN sed --in-place=~ 's|archive.ubuntu.com|ftp.acc.umu.se|g' /etc/apt/sources.list
+
+# base-tools for C and C++
+RUN apt-get update \
+    && apt-get install \
+        --no-install-recommends \
+        --assume-yes \
+        --quiet \
+        autoconf \
+        automake \
+        cmake \
+        g++ \
+        gcc \
+        gdb \
+        libtool \
+        make \
+        pkg-config \
+    && rm -r /var/lib/apt/lists/*
+
+# Other useful tools for C and C++
+RUN apt-get update \
+    && apt-get install \
+        --no-install-recommends \
+        --assume-yes \
+        --quiet \
+        clangd \
+        valgrind \
+    && rm -r /var/lib/apt/lists/*
+
+# Other useful tools.
+RUN apt-get update \
+    && apt-get install \
+        --no-install-recommends \
+        --assume-yes \
+        --quiet \
+        ca-certificates \
+        curl \
+        git \
+        less \
+        nano \
+        sudo \
+        xz-utils \
+    && rm -r /var/lib/apt/lists/*
+
+# Project-specific dependencies
+RUN apt-get update \
+    && apt-get install \
+        --no-install-recommends \
+        --assume-yes \
+        --quiet \
+        libssl-dev \
+    && rm -r /var/lib/apt/lists/*
+
+RUN useradd \
+        --uid 1000 \
+        --shell /bin/bash \
+        --create-home \
+        build \
+    && adduser build sudo \
+    && echo "\n# Allow sudo without password\n%sudo ALL=(ALL) NOPASSWD:ALL\n" >> /etc/sudoers
+
+# Don't run as root inside container,
+# see https://github.com/microsoft/vscode-remote-release/issues/22
+ENV HOME /home/build
+ENV THIRD_PARTY_ROOT /home/build/third_party
+ENV DIST ubuntu
+USER build
+
+CMD ["/bin/bash", "-l"]

.github/workflows/build.yaml

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+name: Build app
+
+on:
+  push:
+    branches: main
+    tags:
+      - 'v*'
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USER }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      # ref: https://github.com/docker/build-push-action
+      - name: Create builder container
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: .devcontainer/ubuntu/Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: |
+            1nfiniteloop/nss-http-builder:latest
+            1nfiniteloop/nss-http-builder:1.0.0
+          # ref: https://github.com/docker/buildx/blob/master/docs/reference/buildx_build.md#-use-an-external-cache-source-for-a-build---cache-from
+          cache-from: type=registry,ref=1nfiniteloop/nss-http-builder:latest
+          cache-to: type=inline
+
+      # ref: https://github.com/actions/cache
+      - name: Get cache for third party dependencies
+        id: cache
+        uses: actions/cache@v2
+        with:
+          path: third_party_root/install
+          key: third-party-${{ hashFiles('third_party') }}
+
+      - name: Build third-party dependencies
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: |
+          docker run \
+            --rm \
+            --user root \
+            --workdir /home/build \
+            --env THIRD_PARTY_ROOT=/home/build/nss-http/third_party_root \
+            --volume $(pwd):/home/build/nss-http \
+            1nfiniteloop/nss-http-builder /bin/bash -c ' \
+              mkdir --parents nss-http/third_party_root/source \
+                && for dep in nss-http/third_party/{boost,cpr,yaml_cpp}; \
+                   do ${dep} || break; done'
+
+      - name: Build nss-http
+        run: |
+          docker run \
+            --rm \
+            --user root \
+            --workdir /home/build \
+            --env THIRD_PARTY_ROOT=/home/build/nss-http/third_party_root \
+            --volume $(pwd):/home/build/nss-http \
+            1nfiniteloop/nss-http-builder /bin/bash -c ' \
+              mkdir --parents nss-http/build/Release
+              cmake \
+                -D VERSION=1.0.0 \
+                -D BUILD=Release \
+                -D UNITTEST=OFF \
+                -S nss-http \
+                -B nss-http/build/Release \
+              && make --directory=nss-http/build/Release package'

.gitignore

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+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# Project
+build/
+.vscode/
+.clangd/
+compile_commands.json

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.5)
+project(nss-http
+  VERSION ${VERSION}
+  DESCRIPTION "Name service switch implementation for query unix accounts over http"
+  HOMEPAGE_URL "https://github.com/1nfiniteloop/nss-http"
+)
+
+set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake-module)
+set(CMAKE_BUILD_TYPE ${BUILD})
+option(UNITTEST "Build unit tests and its dependencies" ON)
+
+# Language-specific settings
+add_compile_options(-Wall -Wextra -pedantic -Werror)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_FLAGS_DEBUG "-ggdb3")
+set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+
+# THIRD_PARTY_ROOT and DIST provided from Dockerfile
+set(CMAKE_PREFIX_PATH
+  $ENV{THIRD_PARTY_ROOT}/install/$ENV{DIST}/boost_1_75_0
+  $ENV{THIRD_PARTY_ROOT}/install/$ENV{DIST}/cpr-1.6.2
+  $ENV{THIRD_PARTY_ROOT}/install/$ENV{DIST}/yaml-cpp-0.6.3
+  $ENV{THIRD_PARTY_ROOT}/install/$ENV{DIST}/googletest-release-1.10.0
+)
+
+if (UNITTEST)
+  include(ImportGTest)
+  enable_testing()
+  add_custom_target(test_all COMMAND ${CMAKE_CTEST_COMMAND})
+endif()
+
+# Third party dependencies:
+include(ImportBoost)
+include(ImportCpr)
+include(ImportYamlCpp)
+
+# Project components
+add_subdirectory(debian)
+add_subdirectory(source)
+
+# Package
+include(PackageDebian)