doc: Fix Python example code.

* lang/python/doc/src/gpgme-python-howto.org: Fix chmod race.
* lang/python/examples/howto/export-secret-key.py: Likewise.
* lang/python/examples/howto/export-secret-keys.py: Likewise.
* lang/python/examples/howto/temp-homedir-config.py: Likewise.

--

It's not for Python 2.7.

GnuPG-bug-id: 6466
Reported-by: Hanno Böck
Co-authored-by: Ingo Klöcker
Signed-off-by: NIIBE Yutaka <[email protected]>

1 files changed, 9 insertions, 3 deletions

diff --git a/lang/python/doc/src/gpgme-python-howto.org b/lang/python/doc/src/gpgme-python-howto.org
index 2121fe65..b4367872 100644
--- a/lang/python/doc/src/gpgme-python-howto.org
+++ b/lang/python/doc/src/gpgme-python-howto.org
@@ -1612,6 +1612,7 @@ of the entire public keybox.
 
 #+BEGIN_SRC python -i
 import gpg
+import os
 import os.path
 import sys
 
@@ -1619,6 +1620,9 @@ print("""
 This script exports one or more public keys in minimised form.
 """)
 
+def open_0o600(path, flags):
+    return os.open(path, flags, mode=0o600)
+
 c = gpg.Context(armor=True)
 
 if len(sys.argv) >= 4:
@@ -1654,7 +1658,7 @@ except:
     result = c.key_export_minimal(pattern=None)
 
 if result is not None:
-    with open(keyfile, "wb") as f:
+    with open(keyfile, "wb", opener=open_0o600) as f:
         f.write(result)
 else:
     pass
@@ -1686,6 +1690,9 @@ This script exports one or more secret keys.
 The gpg-agent and pinentry are invoked to authorise the export.
 """)
 
+def open_0o600(path, flags):
+    return os.open(path, flags, mode=0o600)
+
 c = gpg.Context(armor=True)
 
 if len(sys.argv) >= 4:
@@ -1735,9 +1742,8 @@ except:
     result = c.key_export_secret(pattern=None)
 
 if result is not None:
-    with open(keyfile, "wb") as f:
+    with open(keyfile, "wb", opener=open_0o600)) as f:
         f.write(result)
-    os.chmod(keyfile, 0o600)
 else:
     pass
 #+END_SRC