contrib: add nm-in-container.sh script to build a (podman) container for testing

Only a first attempt. It needs more improvements.

contrib/scripts/nm-in-container.d/.gitignore

@@ -0,0 +1 @@
+/dockerfile.*

contrib/scripts/nm-in-container.d/data-nm-env-prepare.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+
+set -e
+
+die() {
+    printf '%s\n' "$*"
+    exit 1
+}
+
+cleanup() {
+    local IDX="$1"
+
+    pkill -F "/tmp/nm-dnsmasq-d_$IDX.pid" dnsmasq &>/dev/null || :
+    : > "/tmp/nm-dnsmasq-d_$IDX.pid"
+
+    ip link del "d_$IDX" &>/dev/null || :
+}
+
+setup() {
+    local IDX="$1"
+
+    cleanup "$IDX"
+
+    ip link add "net$IDX" type veth peer "d_$IDX"
+    ip link set "d_$IDX" up
+
+    ip addr add "192.168.$((120 + $IDX)).1/23" dev "d_$IDX"
+
+    dnsmasq \
+        --conf-file=/dev/null \
+        --pid-file="/tmp/nm-dnsmasq-d_$IDX.pid" \
+        --no-hosts \
+        --keep-in-foreground \
+        --bind-interfaces \
+        --except-interface=lo \
+        --clear-on-reload \
+        --listen-address="192.168.$((120 + $IDX)).1" \
+        --dhcp-range="192.168.$((120 + $IDX)).100,192.168.$((120 + $IDX)).150" \
+        --no-ping \
+        &
+}
+
+IDX=1
+CMD=
+for (( i=1 ; i<="$#" ; )) ; do
+    c="${@:$i:1}"
+    i=$((i+1))
+    case "$c" in
+        setup|cleanup)
+            CMD="$c"
+            ;;
+        --idx|-i)
+            test $i -le "$#" || die "missing argument to --idx"
+            IDX="${@:$i:1}"
+            i=$((i+1))
+            ;;
+        *)
+            die "invalid argument"
+            ;;
+    esac
+done
+
+test "$CMD" != "" || die "missing command (setup|cleanup)"
+
+$CMD "$IDX"

contrib/scripts/nm-in-container.sh

@@ -0,0 +1,249 @@
+#!/bin/bash
+
+set -e
+
+###############################################################################
+
+BASE_IMAGE="${BASE_IMAGE:-fedora:latest}"
+
+BASEDIR_NM="$(readlink -f "$(dirname "$(readlink -f "$0")")/../..")"
+BASEDIR="$BASEDIR_NM/contrib/scripts/nm-in-container.d"
+
+CONTAINER_NAME_REPOSITORY=${CONTAINER_NAME_REPOSITORY:-my}
+CONTAINER_NAME_TAG=${CONTAINER_NAME_TAG:-nm}
+CONTAINER_NAME_NAME=${CONTAINER_NAME_NAME:-nm}
+
+###############################################################################
+
+die() {
+    printf "%s\n" "$*" >&2
+    exit 1
+}
+
+###############################################################################
+
+CLEANUP_FILES=()
+DO_CLEANUP=1
+cleanup() {
+    test "$DO_CLEANUP" = 1 || return 0
+    for f in "${CLEANUP_FILES[@]}" ; do
+        rm -rf "$f"
+    done
+}
+
+trap cleanup EXIT
+
+###############################################################################
+
+bind_files() {
+    VARIABLE_NAME="$1"
+
+    ARR=()
+    H=~
+
+    for f in ~/.gitconfig* ~/.vim* ; do
+        f2="${f#$H/}"
+        [[ "$f2" = .viminf* ]] && continue
+        [[ "$f2" = *.tmp ]] && continue
+        [[ "$f2" = *~ ]] && continue
+        f2="/root/$f2"
+        ARR+=( -v "$f:$f2:Z" )
+    done
+
+    eval "$VARIABLE_NAME=( \"\${ARR[@]}\" )"
+}
+
+create_dockerfile() {
+
+    DOCKERFILE="$1"
+    BASE_IMAGE="$2"
+
+    cat <<EOF > "$DOCKERFILE"
+FROM $BASE_IMAGE
+
+ENTRYPOINT ["/sbin/init"]
+
+RUN dnf install -y \\
+    ModemManager-devel \\
+    ModemManager-glib-devel \\
+    NetworkManager \\
+    audit-libs-devel \\
+    bash-completion \\
+    bluez-libs-devel \\
+    cscope \\
+    dbus-devel \\
+    dbus-x11 \\
+    dhclient \\
+    dnsmasq \\
+    firewalld-filesystem \\
+    gcc-c++ \\
+    gdb \\
+    gettext-devel \\
+    git \\
+    glib2-doc \\
+    gnutls-devel \\
+    gobject-introspection-devel \\
+    gtk-doc \\
+    intltool \\
+    iproute \\
+    iptables \\
+    jansson-devel \\
+    libasan \\
+    libcurl-devel \\
+    libndp-devel \\
+    libpsl-devel \\
+    libselinux-devel \\
+    libtool \\
+    libuuid-devel \\
+    make \\
+    meson \\
+    meson \\
+    mobile-broadband-provider-info-devel \\
+    newt-devel \\
+    nss-devel \\
+    polkit-devel \\
+    ppp \\
+    ppp-devel \\
+    procps \\
+    python3-dbus \\
+    python3-devel \\
+    python3-gobject \\
+    python3-pip \\
+    python3-pip \\
+    readline-devel \\
+    rpm-build \\
+    strace \\
+    systemd \\
+    systemd-devel \\
+    teamd-devel \\
+    vala-devel \\
+    vala-tools \\
+    valgrind \\
+    vim \\
+    which
+
+RUN pip install gdbgui
+RUN systemctl enable NetworkManager
+RUN dnf clean all
+
+COPY data-nm-env-prepare.sh "/usr/bin/nm-env-prepare.sh"
+
+RUN sed 's/.*RateLimitBurst=.*/RateLimitBurst=0/' /etc/systemd/journald.conf -i
+
+RUN echo -e '[logging]\nlevel=TRACE\ndomains=ALL,VPN_PLUGIN:TRACE\n' >> /etc/NetworkManager/conf.d/90-my.conf
+RUN echo -e '[device-veths-1]\nmatch-device=interface-name:d_*\nmanaged=0\n' >> /etc/NetworkManager/conf.d/90-my.conf
+RUN echo -e '[device-veths-2]\nmatch-device=interface-name:net*\nmanaged=1\n' >> /etc/NetworkManager/conf.d/90-my.conf
+
+RUN rm -rf /etc/NetworkManager/system-connections/*
+
+RUN echo 'alias m="make -j 8"' >> /etc/bashrc.my
+RUN echo 'alias n="ninja -C build"' >> /etc/bashrc.my
+RUN echo '' >> /etc/bashrc.my
+RUN echo '. /usr/share/git-core/contrib/completion/git-prompt.sh' >> /etc/bashrc.my
+RUN echo 'PS1="\[\\033[01;36m\]\u@\h\[\\033[00m\]:\\t:\[\\033[01;34m\]\w\\\$(__git_ps1 \\" \[\\033[01;36m\](%s)\[\\033[00m\]\\")\[\\033[00m\]\$ "' >> /etc/bashrc.my
+
+RUN echo -e '\n. /etc/bashrc.my\n' >> /etc/bashrc
+EOF
+}
+
+###############################################################################
+
+usage() {
+    cat <<EOF
+$0: build|run|exec|clean [--no-cleanup]
+EOF
+}
+
+###############################################################################
+
+container_image_exists() {
+    podman image exists my:nm || return 1
+}
+
+container_exists() {
+    podman container exists "$1" || return 1
+}
+
+container_is_running() {
+    test "$(podman ps --format "{{.ID}} {{.Names}}" | sed -n "s/ $1\$/\0/p")" != "" || return 1
+}
+
+###############################################################################
+
+do_clean() {
+    podman stop "$CONTAINER_NAME_NAME" || :
+    podman rm "$CONTAINER_NAME_NAME" || :
+    podman rmi "$CONTAINER_NAME_REPOSITORY:$CONTAINER_NAME_TAG" || :
+}
+
+do_build() {
+    container_image_exists "$CONTAINER_NAME_REPOSITORY:$CONTAINER_NAME_TAG" && return 0
+
+    DOCKERFILE="$(mktemp --tmpdir="$BASEDIR" dockerfile.XXXXXX)"
+    CLEANUP_FILES+=($DOCKERFILE)
+    create_dockerfile "$DOCKERFILE" "$BASE_IMAGE"
+    podman build --tag "$CONTAINER_NAME_REPOSITORY:$CONTAINER_NAME_TAG" -f "$DOCKERFILE"
+}
+
+do_run() {
+    do_build
+
+    if container_is_running "$CONTAINER_NAME_NAME" ; then
+        return 0
+    fi
+
+    if container_exists "$CONTAINER_NAME_NAME" ; then
+        podman start "$CONTAINER_NAME_NAME"
+    else
+        bind_files BIND_FILES
+        podman run --privileged \
+            --name "$CONTAINER_NAME_NAME" \
+            -d \
+            -v "$BASEDIR_NM:$BASEDIR_NM:Z" \
+            "${BIND_FILES[@]}" \
+            "$CONTAINER_NAME_REPOSITORY:$CONTAINER_NAME_TAG"
+    fi
+}
+
+do_exec() {
+    do_run
+    podman exec -it "$CONTAINER_NAME_NAME" /bin/bash -c "cd \"$BASEDIR_NM\"; exec /bin/bash"
+}
+
+###############################################################################
+
+CMD=exec
+for (( i=1 ; i<="$#" ; )) ; do
+    c="${@:$i:1}"
+    i=$((i+1))
+    case "$c" in
+        --no-cleanup)
+            DO_CLEANUP=0
+            ;;
+        build|run|exec|clean)
+            CMD=$c
+            ;;
+        -h|--help)
+            usage
+            exit 0
+            ;;
+        *)
+            die "invalid argument #$i: $c"
+            ;;
+    esac
+done
+
+###############################################################################
+
+test "$UID" != 0 || die "cannot run as root"
+
+###############################################################################
+
+case "$CMD" in
+    clean|build|run|exec)
+        do_$CMD
+        ;;
+    *)
+        die "missing command, one of build|run|exec|clean"
+        ;;
+esac