Add packaging script

zz-extra/lxc-pack

@@ -0,0 +1,73 @@
+#!/usr/bin/python3
+
+# How to create packaging key:
+#   openssl ecparam -genkey -name secp384r1 -out /root/buildroot/packages.key
+#   openssl ec -in /root/buildroot/packages.key -pubout -out /root/buildroot/packages.pub
+
+import hashlib
+import json
+import os
+import subprocess
+import sys
+
+BUILD_ROOT = '/root/buildroot'
+LXC_ROOT = '/var/lib/lxc'
+
+def pack(meta_file):
+    # Prepare metadata
+    meta = {}
+    with open(meta_file) as fd:
+        for line in fd:
+            line = [l.strip() for l in line.split(':', 1)]
+            meta[line[0]] = line[1]
+    meta['deps'] = meta['deps'].split()
+    pkg_name = meta['pkg']
+    del meta['pkg']
+
+    tar_path = os.path.join(BUILD_ROOT, '{}.tar'.format(pkg_name))
+    xz_path = '{}.xz'.format(tar_path)
+
+    # Remove old package
+    os.unlink(tar_path)
+    os.unlink(xz_path)
+
+    # Create archive
+    print('Archiving', meta['lxcpath'])
+    subprocess.run(['tar', 'cpf', tar_path, meta['lxcpath']], cwd=LXC_ROOT)
+    if '/' not in meta['lxcpath']:
+        print('Archiving setup files')
+        cwd = os.path.dirname(os.path.abspath(meta_file))
+        subprocess.run(['tar', 'rpf', tar_path, 'setup', 'setup.sh'], cwd=cwd)
+    print('Compressing', tar_path)
+    subprocess.run(['xz', '-9', tar_path])
+
+    # Register package
+    print('Registering package')
+    packages = {}
+    packages_file = os.path.join(BUILD_ROOT, 'packages')
+    if os.path.exists(packages_file):
+        with open(packages_file, 'r') as fd:
+            packages = json.load(fd)
+    packages[pkg_name] = meta
+    with open(packages_file, 'w') as fd:
+        json.dump(packages, fd, sort_keys=True, indent=4)
+
+    # Sign packages
+    print('Signing packages')
+    subprocess.run(['openssl', 'dgst', '-sha512', '-sign', 'packages.key', '-out', 'packages.sha512', 'packages'], cwd=BUILD_ROOT)
+
+def hash_file(file_path):
+    sha512 = hashlib.sha512()
+    with open(file_path, 'rb') as fd:
+        while True:
+            data = fd.read(65536)
+            if not data:
+                break
+            sha512.update(data)
+    return sha512.hexdigest()
+
+if __name__ == '__main__':
+    if len(sys.argv) != 2:
+        print('Usage: lxc-pack <pkgfile>')
+    else:
+        pack(sys.argv[1])