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List:       linux-backports
Subject:    [PATCH v3 6/8] lib/bpgpg.py: add simple gpg helper for gpg signing
From:       "Luis R. Rodriguez" <mcgrof () do-not-panic ! com>
Date:       2013-05-23 3:15:54
Message-ID: 1369278956-17550-7-git-send-email-mcgrof () do-not-panic ! com
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From: "Luis R. Rodriguez" <mcgrof@do-not-panic.com>

Note that kup expects --armor --detach-sign, we'll pass that
as part of our extra_args. The python gpg lib doesn't provide
support for random arguments as this one, so just add our
own little helper and carry it over.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
---
 lib/bpgpg.py |   22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 lib/bpgpg.py

diff --git a/lib/bpgpg.py b/lib/bpgpg.py
new file mode 100644
index 0000000..3b5ec78
--- /dev/null
+++ b/lib/bpgpg.py
@@ -0,0 +1,22 @@
+import subprocess, os
+
+class GpgError(Exception):
+    pass
+class ExecutionError(GpgError):
+    def __init__(self, errcode):
+        self.error_code = errcode
+
+def sign(input_file, extra_args=[]):
+    cmd = ['gpg', '--sign']
+
+    cmd.extend(extra_args)
+    cmd.append(input_file)
+
+    process = subprocess.Popen(cmd,
+                               stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
+                               close_fds=True, universal_newlines=True)
+    stdout = process.communicate()[0]
+    process.wait()
+    if process.returncode != 0:
+        raise ExecutionError(process.returncode)
+    return stdout
-- 
1.7.10.4

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