Add Debian source package assembly

Makefile

@@ -34,7 +34,7 @@ MANDIR ?= $(PREFIX)/share/man
 SYSTEMD_UNIT_DIR ?= $(PREFIX)/lib/systemd/system
 CI_TEST_PORT ?= $(if $(PORT),$(PORT),2222)
 
-.PHONY: all clean install install-systemd uninstall uninstall-systemd debug release release-check release-check-strict asan valgrind check test test-advisory ci-test unit-test script-test integration-test anonymous-access-test connection-limit-test security-test stress-test soak-test slow-client-test user-lifecycle-test info
+.PHONY: all clean install install-systemd uninstall uninstall-systemd debug release release-check release-check-strict debian-source-package asan valgrind check test test-advisory ci-test unit-test script-test integration-test anonymous-access-test connection-limit-test security-test stress-test soak-test slow-client-test user-lifecycle-test info
 
 all: $(TARGETS)
 
@@ -94,6 +94,9 @@ release-check:
 release-check-strict:
 	./scripts/release_check.sh --strict
 
+debian-source-package:
+	./scripts/package_debian_source.sh $${OUT_DIR:-dist/debian-source}
+
 asan: CFLAGS += -g -fsanitize=address -fno-omit-frame-pointer
 asan: LDFLAGS += -fsanitize=address
 asan: clean $(TARGETS)

docs/CHANGELOG.md

@@ -113,6 +113,9 @@
   the packaged systemd unit, and release preflight checks that metadata.
 - The Homebrew formula draft now defines a `brew services` entry that runs the
   installed `tnt` binary with state under `var/tnt`.
+- Added `scripts/package_debian_source.sh` and `make debian-source-package`
+  to assemble Debian/Ubuntu source-package trees from the current project
+  without publishing or uploading anything.
 - The i18n helper now supports language-keyed string initializers through
   `I18N_STRING_MAP`, so future languages can be added incrementally without
   changing every existing two-language string initializer.

packaging/README.md

@@ -26,13 +26,22 @@ Package installs include both `tnt` and `tntctl`.  `tnt` is the server process;
    make release-check
    ```
 
-6. Before submitting package recipes, replace checksum placeholders and run:
+6. Assemble a Debian/PPA source tree when preparing Ubuntu packaging:
+
+   ```sh
+   make debian-source-package
+   ```
+
+   Use `scripts/package_debian_source.sh --build` on a Debian/Ubuntu system
+   with `dpkg-buildpackage` installed to build the unsigned source package.
+
+7. Before submitting package recipes, replace checksum placeholders and run:
 
    ```sh
    make release-check-strict
    ```
 
-7. Submit packages manually:
+8. Submit packages manually:
    - Arch: upload `PKGBUILD` and generated `.SRCINFO` to AUR.
    - Homebrew: open a PR to the project tap, or later Homebrew core if eligible.
    - Ubuntu: build Debian source packages and upload to a Launchpad PPA.

packaging/debian/README.md

@@ -6,18 +6,17 @@ the project has a stable release cadence.
 
 ## Draft metadata
 
-The `debian/` directory in this folder is a packaging draft. To test it against
-an upstream release tree, copy it to the root of a clean source checkout:
+The `debian/` directory in this folder is a packaging draft. To assemble it
+against a clean source tree:
 
 ```sh
-cp -a packaging/debian/debian ./debian
-dpkg-buildpackage -us -uc
+make debian-source-package
 ```
 
-For PPA uploads, build a signed source package instead:
+For PPA uploads, build a source package on Debian/Ubuntu:
 
 ```sh
-debuild -S
+scripts/package_debian_source.sh --build
 ```
 
 ## Recommended path

scripts/package_debian_source.sh

@@ -0,0 +1,79 @@
+#!/bin/sh
+# Assemble a Debian/Ubuntu source-package tree. This script never uploads.
+
+set -eu
+
+usage() {
+    cat <<'USAGE'
+Usage: scripts/package_debian_source.sh [--build] [OUT_DIR]
+
+Create OUT_DIR/tnt-chat-$TNT_VERSION from tracked source files and copy the
+draft Debian metadata to OUT_DIR/tnt-chat-$TNT_VERSION/debian.
+
+Options:
+  --build   run dpkg-buildpackage -S -us -uc after assembly
+
+Default OUT_DIR: dist/debian-source
+USAGE
+}
+
+fail() {
+    echo "package-debian-source: $*" >&2
+    exit 1
+}
+
+BUILD=0
+OUT_DIR=${TNT_DEBIAN_SOURCE_OUT:-dist/debian-source}
+OUT_SET=0
+
+while [ "$#" -gt 0 ]; do
+    case "$1" in
+        --build)
+            BUILD=1
+            ;;
+        -h|--help)
+            usage
+            exit 0
+            ;;
+        -*)
+            fail "unknown option: $1"
+            ;;
+        *)
+            [ "$OUT_SET" -eq 0 ] || fail "multiple output directories"
+            OUT_DIR=$1
+            OUT_SET=1
+            ;;
+    esac
+    shift
+done
+
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
+cd "$ROOT"
+
+VERSION=$(sed -n 's/^#define TNT_VERSION "\([^"]*\)".*/\1/p' include/common.h)
+[ -n "$VERSION" ] || fail "could not read TNT_VERSION"
+
+SOURCE_NAME="tnt-chat-$VERSION"
+SOURCE_ROOT="$OUT_DIR/$SOURCE_NAME"
+
+[ ! -e "$SOURCE_ROOT" ] || fail "$SOURCE_ROOT already exists"
+mkdir -p "$OUT_DIR"
+mkdir -p "$SOURCE_ROOT"
+
+git ls-files -z | cpio -0 -pdm "$SOURCE_ROOT" >/dev/null 2>&1
+cp -R "$ROOT/packaging/debian/debian" "$SOURCE_ROOT/debian"
+
+[ -f "$SOURCE_ROOT/debian/control" ] || fail "missing debian/control"
+[ -x "$SOURCE_ROOT/debian/rules" ] || fail "missing executable debian/rules"
+[ -x "$SOURCE_ROOT/debian/postinst" ] || fail "missing executable debian/postinst"
+
+echo "Debian source tree assembled: $SOURCE_ROOT"
+
+if [ "$BUILD" -eq 1 ]; then
+    command -v dpkg-buildpackage >/dev/null 2>&1 ||
+        fail "dpkg-buildpackage not found"
+    (
+        cd "$SOURCE_ROOT"
+        dpkg-buildpackage -S -us -uc
+    )
+fi

scripts/release_check.sh

@@ -173,6 +173,16 @@ grep -q "adduser .* tnt" packaging/debian/debian/postinst ||
 grep -q " adduser" packaging/debian/debian/control ||
     fail "Debian package must depend on adduser for postinst user creation"
 
+step "checking Debian source assembly"
+sh -n scripts/package_debian_source.sh
+scripts/package_debian_source.sh "$tmpdir/debian-source"
+[ -f "$tmpdir/debian-source/tnt-chat-$version/debian/control" ] ||
+    fail "assembled Debian source tree is missing debian/control"
+[ -x "$tmpdir/debian-source/tnt-chat-$version/debian/rules" ] ||
+    fail "assembled Debian source tree is missing executable debian/rules"
+[ -x "$tmpdir/debian-source/tnt-chat-$version/debian/postinst" ] ||
+    fail "assembled Debian source tree is missing executable debian/postinst"
+
 step "checking packaged system user metadata"
 grep -q '^u tnt ' packaging/arch/tnt-chat.sysusers ||
     fail "Arch sysusers file must create the tnt system user"