WIP: run0 support

Signed-off-by: Christian Heusel <christian@heusel.eu>

doc/man/offload-build.1.asciidoc

@@ -14,7 +14,7 @@ Description
 
 Build a PKGBUILD on a remote server using makechrootpkg. Requires a remote user
 that can run archbuild in a non-interactive manner, e.g. must be able to
-elevate permissions using passwordless sudo.
+elevate permissions using passwordless run0.
 
 Options
 -------

doc/man/pkgctl-auth.1.asciidoc

@@ -3,7 +3,7 @@ pkgctl-auth(1)
 
 Name
 ----
-pkgctl-auth - Authenticate with serivces like GitLab.
+pkgctl-auth - Authenticate with services like GitLab.
 
 Synopsis
 --------

src/lib/archroot.sh

@@ -15,7 +15,11 @@ check_root() {
 	local orig_argv=("$@")
 
 	(( EUID == 0 )) && return
-	if type -P sudo >/dev/null; then
+	if type -P run0 >/dev/null; then
+		keepenv=",$keepenv"
+		command="run0 ${keepenv//,/ --setenv=}"
+		exec ${command} -- "${orig_argv[@]}"
+	elif type -P sudo >/dev/null; then
 		exec sudo --preserve-env="${keepenv}" -- "${orig_argv[@]}"
 	else
 		exec su root -c "$(printf ' %q' "${orig_argv[@]}")"

src/makechrootpkg.in

@@ -185,10 +185,18 @@ prepare_chroot() {
 		echo "$x" >>"$copydir/etc/makepkg.conf"
 	done
 
-	cat > "$copydir/etc/sudoers.d/builduser-pacman" <<EOF
-builduser ALL = NOPASSWD: /usr/bin/pacman
+	# TODO(gromit): check if this rule is sane
+	# TODO(gromit): this will require a full container
+	cat > "$copydir/etc/polkit-1/rules.d/10-systemd-nopasswd.rules" <<EOF
+polkit.addRule(function(action, subject) {
+    if (action.id == "org.freedesktop.systemd1.manage-units") {
+        if (subject.isInGroup("wheel")) {
+            return polkit.Result.YES;
+        }
+    }
+});
 EOF
-	chmod 440 "$copydir/etc/sudoers.d/builduser-pacman"
+	chmod 440 "$copydir/etc/polkit-1/rules.d/10-systemd-nopasswd.rules"
 
 	cat > "$copydir/etc/gitconfig" <<EOF
 [safe]
@@ -222,17 +230,14 @@ _chrootbuild() {
 	# shellcheck source=/dev/null
 	. /etc/profile
 
-	# Beware, there are some stupid arbitrary rules on how you can
-	# use "$" in arguments to commands with "sudo -i".  ${foo} or
-	# ${1} is OK, but $foo or $1 isn't.
-	# https://bugzilla.sudo.ws/show_bug.cgi?id=765
-	sudo --preserve-env=SOURCE_DATE_EPOCH \
-		--preserve-env=BUILDTOOL \
-		--preserve-env=BUILDTOOLVER \
-		-iu builduser bash -c 'cd /startdir; makepkg "$@"' -bash "$@"
+	run0 --setenv=SOURCE_DATE_EPOCH \
+		 --setenv=BUILDTOOL \
+		 --setenv=BUILDTOOLVER \
+		 --via-shell --chdir='~' \
+		 --user=builduser -- bash -c 'cd /startdir; makepkg "$@"' -bash "$@"
 	ret=$?
 	case $ret in
-		0|14)
+		0)
 			return 0;;
 		*)
 			return $ret;;
@@ -243,7 +248,7 @@ _chrootnamcap() {
 	pacman -S --needed --noconfirm namcap
 	for pkgfile in /startdir/PKGBUILD /pkgdest/*; do
 		echo "Checking ${pkgfile##*/}"
-		sudo -u builduser namcap "$pkgfile" 2>&1 | tee "/logdest/${pkgfile##*/}-namcap.log"
+		run0 --user=builduser -- namcap "$pkgfile" 2>&1 | tee "/logdest/${pkgfile##*/}-namcap.log"
 	done
 }
 
@@ -252,8 +257,12 @@ download_sources() {
 	chown "$makepkg_user:" "$WORKDIR"
 
 	# Ensure sources are downloaded
-	sudo -u "$makepkg_user" --preserve-env=GNUPGHOME,SSH_AUTH_SOCK \
-		env SRCDEST="$SRCDEST" BUILDDIR="$WORKDIR" \
+	run0 --user="$makepkg_user" \
+		--setenv=GNUPGHOME \
+		--setenv=SSH_AUTH_SOCK \
+		--setenv=SRCDEST="$SRCDEST" \
+		--setenv=BUILDDIR="$WORKDIR" \
+		--chdir=. -- \
 		makepkg --config="$copydir/etc/makepkg.conf" --verifysource -o "${verifysource_args[@]}" ||
 		die "Could not download sources."
 }
@@ -400,7 +409,7 @@ if arch-nspawn "$copydir" \
 	"${nspawn_build_args[@]}" \
 	/chrootbuild "${makepkg_args[@]}"
 then
-	mapfile -t pkgnames < <(sudo -u "$makepkg_user" bash -c 'source PKGBUILD; printf "%s\n" "${pkgname[@]}"')
+	mapfile -t pkgnames < <(run0 --user="$makepkg_user" -- bash -c 'source PKGBUILD; printf "%s\n" "${pkgname[@]}"')
 	move_products
 else
 	(( ret += 1 ))
@@ -453,7 +462,7 @@ else
 		done
 
 		msg2 "Checking packages"
-		sudo -u "$makepkg_user" checkpkg --rmdir --warn --makepkg-config "$copydir/etc/makepkg.conf" "${remotepkgs[@]/#file:\/\//}"
+		run0 --user="$makepkg_user" -- checkpkg --rmdir --warn --makepkg-config "$copydir/etc/makepkg.conf" "${remotepkgs[@]/#file:\/\//}"
 	fi
 	true
 fi

src/makerepropkg.in

@@ -192,7 +192,7 @@ for p in "$@"; do
         pkgfile=${pkgfile_remote#file://}
         if [[ ! -f ${pkgfile} ]]; then
             msg "Downloading package '%s' into pacman's cache" "${pkgfile}"
-            sudo pacman -Swdd --noconfirm --logfile /dev/null "${p}" || exit 1
+            run0 -- pacman -Swdd --noconfirm --logfile /dev/null "${p}" || exit 1
             pkgfile_remote=$(pacman -Sddp "${p}" 2>/dev/null)
             pkgfile="${pkgfile_remote#file://}"
         fi

src/offload-build.in

@@ -94,12 +94,12 @@ makepkg_source_package || die "unable to make source package"
 rmdir --ignore-fail-on-non-empty src 2>/dev/null || true
 
 # Create a temporary directory on the server
-cmd='
-    temp="${XDG_CACHE_HOME:-$HOME/.cache}/offload-build" &&
-    mkdir -p "$temp" &&
-    mktemp --directory --tmpdir="$temp"
-'
-remote_temp=$(ssh "${SSH_OPTS[@]}" -- "$server" "bash -l -c '$cmd'")
+remote_temp=$(
+    ssh "${SSH_OPTS[@]}" -- "$server" '
+        temp="${XDG_CACHE_HOME:-$HOME/.cache}/offload-build" &&
+        mkdir -p "$temp" &&
+        mktemp --directory --tmpdir="$temp"
+')
 
 # Transfer the srcpkg to the server
 msg "Transferring source package to the server..."
@@ -109,34 +109,36 @@ rsync "${RSYNC_OPTS[@]}" -- "$srcpkg" "$server":"$remote_temp" || die
 
 # Prepare the srcpkg on the server
 msg "Extracting srcpkg"
-ssh "${SSH_OPTS[@]}" -- "$server" "bash -c -l 'cd ${remote_temp@Q} && bsdtar --strip-components 1 -xvf $(basename "$srcpkg")'" || die
+ssh "${SSH_OPTS[@]}" -- "$server" "cd ${remote_temp@Q} && bsdtar --strip-components 1 -xvf $(basename "$srcpkg")" || die
 
 # Run the build command on the server
 msg "Running archbuild"
 # shellcheck disable=SC2145
-if ssh "${SSH_OPTS[@]}" -t -- "$server" "bash -c -l 'cd ${remote_temp@Q} && export LOGDEST="" && ${archbuild_cmd[@]@Q}'"; then
+if ssh "${SSH_OPTS[@]}" -t -- "$server" "cd ${remote_temp@Q} && export LOGDEST="" && ${archbuild_cmd[@]@Q}"; then
     msg "Build complete"
 
     # Get an array of files that should be downloaded from the server
-    cmd='
-        cd '"${remote_temp@Q}"' &&
-        makepkg_user_config="${XDG_CONFIG_HOME:-$HOME/.config}/pacman/makepkg.conf" &&
-        makepkg_config="/usr/share/devtools/makepkg.conf.d/'"${arch}"'.conf" &&
-        if [[ -f /usr/share/devtools/makepkg.conf.d/'"${repo}"'-'"${arch}"'.conf ]]; then
-            makepkg_config="/usr/share/devtools/makepkg.conf.d/'"${repo}"'-'"${arch}"'.conf"
-        fi &&
-        while read -r file; do
-            [[ -f "${file}" ]] && printf "%s\n" "${file}" ||:
-        done < <(makepkg --config <(cat "${makepkg_user_config}" "${makepkg_config}" 2>/dev/null) --packagelist) &&
-        printf "%s\n" '"${remote_temp@Q}/PKGBUILD"'
+    mapfile -t files < <(
+        ssh "${SSH_OPTS[@]}" -- "$server" "
+            cd ${remote_temp@Q}"' &&
+            makepkg_user_config="${XDG_CONFIG_HOME:-$HOME/.config}/pacman/makepkg.conf" &&
+            makepkg_config="/usr/share/devtools/makepkg.conf.d/'"${arch}"'.conf" &&
+            if [[ -f /usr/share/devtools/makepkg.conf.d/'"${repo}"'-'"${arch}"'.conf ]]; then
+                makepkg_config="/usr/share/devtools/makepkg.conf.d/'"${repo}"'-'"${arch}"'.conf"
+            fi &&
+            while read -r file; do
+                [[ -f "${file}" ]] && printf "%s\n" "${file}" ||:
+            done < <(makepkg --config <(cat "${makepkg_user_config}" "${makepkg_config}" 2>/dev/null) --packagelist) &&
+            printf "%s\n" '"${remote_temp@Q}/PKGBUILD"'
 
-        find '"${remote_temp@Q}"' -name "*.log"
-    '
-    mapfile -t files < <(ssh "${SSH_OPTS[@]}" -- "$server" "bash -c -l '$cmd'")
+            find '"${remote_temp@Q}"' -name "*.log"
+    ')
 else
     # Build failed, only the logs should be downloaded from the server
-    cmd='find '"${remote_temp@Q}"' -name "*.log"'
-    mapfile -t files < <(ssh "${SSH_OPTS[@]}" -- "$server" "bash -c -l '$cmd'")
+    mapfile -t files < <(
+        ssh "${SSH_OPTS[@]}" -- "$server" '
+            find '"${remote_temp@Q}"' -name "*.log"
+    ')
 fi