[OE-core] [PATCH 4/5] oe/gpg_sign: add 'passphrase' argument to detach_sign method

[Markus Lehtonen]

This allows directly giving the passphrase, instead of reading from a
file.

[YOCTO #9006]

Signed-off-by: Markus Lehtonen <markus.lehtonen at linux.intel.com>
---
 meta/lib/oe/gpg_sign.py | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

diff --git a/meta/lib/oe/gpg_sign.py b/meta/lib/oe/gpg_sign.py
index c4cadd6..ada1b2f 100644
--- a/meta/lib/oe/gpg_sign.py
+++ b/meta/lib/oe/gpg_sign.py
@@ -50,20 +50,30 @@ class LocalSigner(object):
             bb.error('rpmsign failed: %s' % proc.before.strip())
             raise bb.build.FuncFailed("Failed to sign RPM packages")
 
-    def detach_sign(self, input_file, keyid, passphrase_file, armor=True):
+    def detach_sign(self, input_file, keyid, passphrase_file, passphrase=None, armor=True):
         """Create a detached signature of a file"""
-        cmd = "%s --detach-sign --batch --no-tty --yes " \
-                  "--passphrase-file '%s' -u '%s' " % \
-                  (self.gpg_bin, passphrase_file, keyid)
+        import subprocess
+
+        if passphrase_file and passphrase:
+            raise Exception("You should use either passphrase_file of passphrase, not both")
+
+        cmd = [self.gpg_bin, '--detach-sign', '--batch', '--no-tty', '--yes',
+               '-u', keyid]
+        if passphrase_file:
+            cmd += ['--passphrase-file', passphrase_file]
+        else:
+            cmd += ['--passphrase-fd', '0']
         if self.gpg_path:
-            cmd += "--homedir %s " % self.gpg_path
+            cmd += ['--homedir', self.gpg_path]
         if armor:
-            cmd += "--armor "
-        cmd += input_file
-        status, output = oe.utils.getstatusoutput(cmd)
-        if status:
+            cmd += ['--armor']
+        cmd.append(input_file)
+        job = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
+                               stderr=subprocess.PIPE)
+        _, stderr = job.communicate(passphrase)
+        if job.returncode:
             raise bb.build.FuncFailed("Failed to create signature for '%s': %s" %
-                                      (input_file, output))
+                                      (input_file, stderr))
 
     def verify(self, sig_file):
         """Verify signature"""
-- 
2.6.2