sign_rpm.bbclass: do not store key details in signer instance

Refactor the LocalSigner class. Do not store keyid or passphrase file in
the signer object as they are only needed for some of the methods. For
example, the newly added verify() method does not need any key
parameters and export_pubkey only uses keyid.

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 11 insertions, 13 deletions

diff --git a/meta/lib/oe/gpg_sign.py b/meta/lib/oe/gpg_sign.py
index 16a23645b6..c4cadd6a24 100644
--- a/meta/lib/oe/gpg_sign.py
+++ b/meta/lib/oe/gpg_sign.py
@@ -6,31 +6,29 @@ import oe.utils
 
 class LocalSigner(object):
     """Class for handling local (on the build host) signing"""
-    def __init__(self, d, keyid, passphrase_file):
-        self.keyid = keyid
-        self.passphrase_file = passphrase_file
+    def __init__(self, d):
         self.gpg_bin = d.getVar('GPG_BIN', True) or \
                   bb.utils.which(os.getenv('PATH'), 'gpg')
         self.gpg_path = d.getVar('GPG_PATH', True)
         self.rpm_bin = bb.utils.which(os.getenv('PATH'), "rpm")
 
-    def export_pubkey(self, output_file):
+    def export_pubkey(self, output_file, keyid):
         """Export GPG public key to a file"""
         cmd = '%s --batch --yes --export --armor -o %s ' % \
                 (self.gpg_bin, output_file)
         if self.gpg_path:
             cmd += "--homedir %s " % self.gpg_path
-        cmd += self.keyid
+        cmd += keyid
         status, output = oe.utils.getstatusoutput(cmd)
         if status:
             raise bb.build.FuncFailed('Failed to export gpg public key (%s): %s' %
-                                      (self.keyid, output))
+                                      (keyid, output))
 
-    def sign_rpms(self, files):
+    def sign_rpms(self, files, keyid, passphrase_file):
         """Sign RPM files"""
         import pexpect
 
-        cmd = self.rpm_bin + " --addsign --define '_gpg_name %s' " % self.keyid
+        cmd = self.rpm_bin + " --addsign --define '_gpg_name %s' " % keyid
         if self.gpg_bin:
             cmd += "--define '%%__gpg %s' " % self.gpg_bin
         if self.gpg_path:
@@ -41,7 +39,7 @@ class LocalSigner(object):
         proc = pexpect.spawn(cmd)
         try:
             proc.expect_exact('Enter pass phrase:', timeout=15)
-            with open(self.passphrase_file) as fobj:
+            with open(passphrase_file) as fobj:
                 proc.sendline(fobj.readline().rstrip('\n'))
             proc.expect(pexpect.EOF, timeout=900)
             proc.close()
@@ -52,11 +50,11 @@ 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, armor=True):
+    def detach_sign(self, input_file, keyid, passphrase_file, 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, self.passphrase_file, self.keyid)
+                  (self.gpg_bin, passphrase_file, keyid)
         if self.gpg_path:
             cmd += "--homedir %s " % self.gpg_path
         if armor:
@@ -78,11 +76,11 @@ class LocalSigner(object):
         return ret
 
 
-def get_signer(d, backend, keyid, passphrase_file):
+def get_signer(d, backend):
     """Get signer object for the specified backend"""
     # Use local signing by default
     if backend == 'local':
-        return LocalSigner(d, keyid, passphrase_file)
+        return LocalSigner(d)
     else:
         bb.fatal("Unsupported signing backend '%s'" % backend)