[OE-core] [PATCH v6 2/4] gpg_sign: detach_sign: fix gpg > 2.1 STDIN file descriptor

[Markus Lehtonen]

Hi,

Resending as my I got a strange "Only members may post to the list."
error yesterday...

On Fri, 2016-02-19 at 17:43 +0200, Ioan-Adrian Ratiu wrote:
> Starting from v2.1 passing passwords directly to gpg does not work
> anymore [1], instead a loopback interface must be used otherwise
> gpg >2.1 will error out with:
> "gpg: signing failed: Inappropriate ioctl for device"
> 
> gpg <2.1 does not work with the new --pinentry-mode arg and gives an
> invalid option error, so we detect what is the running version of gpg
> and pass it accordingly.
> 
> [1] https://wiki.archlinux.org/index.php/GnuPG#Unattended_passphrase
> 
> Signed-off-by: Ioan-Adrian Ratiu <adrian.ratiu at ni.com>
> ---
>  meta/lib/oe/gpg_sign.py | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/meta/lib/oe/gpg_sign.py b/meta/lib/oe/gpg_sign.py
> index ef47d1a..9f6b0f0 100644
> --- a/meta/lib/oe/gpg_sign.py
> +++ b/meta/lib/oe/gpg_sign.py
> @@ -66,6 +66,12 @@ class LocalSigner(object):
>          if armor:
>              cmd += ['--armor']
>  
> +        #gpg > 2.1 supports password pipes only through the loopback
> interface
> +        #gpg < 2.1 errors out if given unknown parameters
> +        gpg_ver = self.get_gpg_version()
> +        if gpg_ver > 2.1:
> +            cmd += ['--pinentry-mode', 'loopback']
> +

As far as I can tell get_gpg_version returns a string. However, you
compare that with a float. This should give more correct behavior:
+        if gpg_ver > "2.1":



Thanks,
  Markus


>          try:
>              keypipe = os.pipe()
>  
> @@ -99,6 +105,20 @@ class LocalSigner(object):
>              raise Exception("Failed to sign '%s'" % input_file)
>  
>  
> +    def get_gpg_version(self):
> +        """Return the gpg version"""
> +        import subprocess
> +
> +        job = subprocess.Popen([self.gpg_bin, "--version"],
> stdout=subprocess.PIPE)
> +        (stdout, _) = job.communicate()
> +
> +        if job.returncode:
> +            raise bb.build.FuncFailed("Could not get gpg version (is
> %s installed?)" %
> +                                      self.gpg_bin)
> +
> +        return stdout.split()[2]
> +
> +
>      def verify(self, sig_file):
>          """Verify signature"""
>          cmd = self.gpg_bin + " --verify "