add some example plugins for repo key extraction and migration

examples/fdroid_exportkeystore.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python3
+#
+# an fdroid plugin for exporting a repo's keystore in standard PEM format
+
+import os
+from argparse import ArgumentParser
+from fdroidserver import common
+from fdroidserver.common import FDroidPopen
+from fdroidserver.exception import BuildException
+
+fdroid_summary = 'export the keystore in standard PEM format'
+
+
+def main():
+    parser = ArgumentParser()
+    common.setup_global_opts(parser)
+    options = parser.parse_args()
+    config = common.read_config(options)
+    env_vars = {'LC_ALL': 'C.UTF-8',
+                'FDROID_KEY_STORE_PASS': config['keystorepass'],
+                'FDROID_KEY_PASS': config['keypass']}
+    destkeystore = config['keystore'].replace('.jks', '.p12').replace('/', '_')
+    exportkeystore = config['keystore'].replace('.jks', '.pem').replace('/', '_')
+    if os.path.exists(destkeystore) or os.path.exists(exportkeystore):
+        raise BuildException('%s exists!' % exportkeystore)
+    p = FDroidPopen([config['keytool'], '-importkeystore',
+                     '-srckeystore', config['keystore'],
+                     '-srcalias', config['repo_keyalias'],
+                     '-srcstorepass:env', 'FDROID_KEY_STORE_PASS',
+                     '-srckeypass:env', 'FDROID_KEY_PASS',
+                     '-destkeystore', destkeystore,
+                     '-deststoretype', 'PKCS12',
+                     '-deststorepass:env', 'FDROID_KEY_STORE_PASS',
+                     '-destkeypass:env', 'FDROID_KEY_PASS'],
+                    envs=env_vars)
+    if p.returncode != 0:
+        raise BuildException("Failed to convert to PKCS12!", p.output)
+    p = FDroidPopen(['openssl', 'pkcs12', '-in', destkeystore,
+                     '-passin', 'env:FDROID_KEY_STORE_PASS', '-nokeys',
+                     '-out', exportkeystore,
+                     '-passout', 'env:FDROID_KEY_STORE_PASS'],
+                    envs=env_vars)
+    if p.returncode != 0:
+        raise BuildException("Failed to convert to PEM!", p.output)
+
+
+if __name__ == "__main__":
+    main()