pmacct: T5618: Added build rules for custom pmacct package

The current version of pmacct in Debian (`1.7.7-1`) contains the bug which leads
to a crash when IMT is enabled and ICMP traffic is forwarded through a router.

This commit adds our build with an extra patch, which solves the problem:
https://github.com/pmacct/pmacct/commit/73af9545ea33cd87846306f648f634063ac41765

(cherry picked from commit d5f6445381c44a99459f45e74b792e250d727f44)

1 files changed, 49 insertions, 0 deletions

diff --git a/packages/pmacct/build.py b/packages/pmacct/build.py
new file mode 100755
index 00000000..2445eb12
--- /dev/null
+++ b/packages/pmacct/build.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+from pathlib import Path
+from shutil import copy as copy_file
+from subprocess import run
+
+
+# copy patches
+def apply_deb_patches() -> None:
+    """Apply patches to sources directory
+    """
+    patches_dir = Path('../patches')
+    current_dir: str = Path.cwd().as_posix()
+    if patches_dir.exists():
+        patches_list = list(patches_dir.iterdir())
+        patches_list.sort()
+        series_file = Path(f'{current_dir}/debian/patches/series')
+        series_data = ''
+        for patch_file in patches_list:
+            print(f'Applying patch: {patch_file.name}')
+            copy_file(patch_file, f'{current_dir}/debian/patches/')
+            if series_file.exists():
+                series_data: str = series_file.read_text()
+            series_data = f'{series_data}\n{patch_file.name}'
+            series_file.write_text(series_data)
+
+
+def build_package() -> bool:
+    """Build a package
+
+    Returns:
+        bool: build status
+    """
+    build_cmd: list[str] = ['dpkg-buildpackage', '-uc', '-us', '-tc', '-b']
+    build_status: int = run(build_cmd).returncode
+
+    if not build_status:
+        return False
+    return True
+
+
+# build a package
+if __name__ == '__main__':
+    apply_deb_patches()
+
+    if not build_package():
+        exit(1)
+
+    exit()