1 files changed, 76 insertions, 0 deletions

diff --git a/meta/lib/oe/gpg_sign.py b/meta/lib/oe/gpg_sign.py
new file mode 100644
index 0000000000..55abad8ffc
--- /dev/null
+++ b/meta/lib/oe/gpg_sign.py
@@ -0,0 +1,76 @@
+"""Helper module for GPG signing"""
+import os
+
+import bb
+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
+        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):
+        """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
+        status, output = oe.utils.getstatusoutput(cmd)
+        if status:
+            raise bb.build.FuncFailed('Failed to export gpg public key (%s): %s' %
+                                      (self.keyid, output))
+
+    def sign_rpms(self, files):
+        """Sign RPM files"""
+        import pexpect
+
+        cmd = self.rpm_bin + " --addsign --define '_gpg_name %s' " % self.keyid
+        if self.gpg_bin:
+            cmd += "--define '%%__gpg %s' " % self.gpg_bin
+        if self.gpg_path:
+            cmd += "--define '_gpg_path %s' " % self.gpg_path
+        cmd += ' '.join(files)
+
+        # Need to use pexpect for feeding the passphrase
+        proc = pexpect.spawn(cmd)
+        try:
+            proc.expect_exact('Enter pass phrase:', timeout=15)
+            with open(self.passphrase_file) as fobj:
+                proc.sendline(fobj.readline().rstrip('\n'))
+            proc.expect(pexpect.EOF, timeout=900)
+            proc.close()
+        except pexpect.TIMEOUT as err:
+            bb.error('rpmsign timeout: %s' % err)
+            proc.terminate()
+        if os.WEXITSTATUS(proc.status) or not os.WIFEXITED(proc.status):
+            bb.error('rpmsign failed: %s' % proc.before.strip())
+            raise bb.build.FuncFailed("Failed to sign RPM packages")
+
+    def detach_sign(self, input_file):
+        """Create a detached signature of a file"""
+        cmd = "%s --detach-sign --armor --batch --no-tty --yes " \
+                  "--passphrase-file '%s' -u '%s' " % \
+                  (self.gpg_bin, self.passphrase_file, self.keyid)
+        if self.gpg_path:
+            gpg_cmd += "--homedir %s " % self.gpg_path
+        cmd += input_file
+        status, output = oe.utils.getstatusoutput(cmd)
+        if status:
+            raise bb.build.FuncFailed("Failed to create signature for '%s': %s" %
+                                      (input_file, output))
+
+
+def get_signer(d, backend, keyid, passphrase_file):
+    """Get signer object for the specified backend"""
+    # Use local signing by default
+    if backend == 'local':
+        return LocalSigner(d, keyid, passphrase_file)
+    else:
+        bb.fatal("Unsupported signing backend '%s'" % backend)
+