1 files changed, 128 insertions, 0 deletions
diff --git a/lang/python/src/errors.py b/lang/python/src/errors.py
new file mode 100644
index 00000000..1ce139e8
--- /dev/null
+++ b/lang/python/src/errors.py
@@ -0,0 +1,128 @@
+# Copyright (C) 2004 Igor Belyi <[email protected]>
+# Copyright (C) 2002 John Goerzen <[email protected]>
+#
+#    This library is free software; you can redistribute it and/or
+#    modify it under the terms of the GNU Lesser General Public
+#    License as published by the Free Software Foundation; either
+#    version 2.1 of the License, or (at your option) any later version.
+#
+#    This library is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#    Lesser General Public License for more details.
+#
+#    You should have received a copy of the GNU Lesser General Public
+#    License along with this library; if not, write to the Free Software
+#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+
+from __future__ import absolute_import, print_function, unicode_literals
+del absolute_import, print_function, unicode_literals
+
+from . import gpgme
+from . import util
+
+# To appease static analysis tools, we define some constants here.
+# They are overwritten with the proper values by process_constants.
+NO_ERROR = None
+EOF = None
+
+util.process_constants('GPG_ERR_', globals())
+del util
+
+class GpgError(Exception):
+    pass
+
+class GPGMEError(GpgError):
+    def __init__(self, error = None, message = None):
+        self.error = error
+        self.message = message
+
+    @classmethod
+    def fromSyserror(cls):
+        return cls(gpgme.gpgme_err_code_from_syserror())
+
+    def getstring(self):
+        message = "%s: %s" % (gpgme.gpgme_strsource(self.error),
+                              gpgme.gpgme_strerror(self.error))
+        if self.message != None:
+            message = "%s: %s" % (self.message, message)
+        return message
+
+    def getcode(self):
+        return gpgme.gpgme_err_code(self.error)
+
+    def getsource(self):
+        return gpgme.gpgme_err_source(self.error)
+
+    def __str__(self):
+        return self.getstring()
+
+def errorcheck(retval, extradata = None):
+    if retval:
+        raise GPGMEError(retval, extradata)
+
+class KeyNotFound(GPGMEError, KeyError):
+    """Raised if a key was not found
+
+    GPGME indicates this condition with EOF, which is not very
+    idiomatic.  We raise this error that is both a GPGMEError
+    indicating EOF, and a KeyError.
+
+    """
+    def __init__(self, keystr):
+        self.keystr = keystr
+        GPGMEError.__init__(self, EOF)
+    def __str__(self):
+        return self.keystr
+
+# These errors are raised in the idiomatic interface code.
+
+class EncryptionError(GpgError):
+    pass
+
+class InvalidRecipients(EncryptionError):
+    def __init__(self, recipients):
+        self.recipients = recipients
+    def __str__(self):
+        return ", ".join("{}: {}".format(r.fpr,
+                                         gpgme.gpgme_strerror(r.reason))
+                         for r in self.recipients)
+
+class DeryptionError(GpgError):
+    pass
+
+class UnsupportedAlgorithm(DeryptionError):
+    def __init__(self, algorithm):
+        self.algorithm = algorithm
+    def __str__(self):
+        return self.algorithm
+
+class SigningError(GpgError):
+    pass
+
+class InvalidSigners(SigningError):
+    def __init__(self, signers):
+        self.signers = signers
+    def __str__(self):
+        return ", ".join("{}: {}".format(s.fpr,
+                                         gpgme.gpgme_strerror(s.reason))
+                         for s in self.signers)
+
+class VerificationError(GpgError):
+    pass
+
+class BadSignatures(VerificationError):
+    def __init__(self, result):
+        self.result = result
+    def __str__(self):
+        return ", ".join("{}: {}".format(s.fpr,
+                                         gpgme.gpgme_strerror(s.status))
+                         for s in self.result.signatures
+                         if s.status != NO_ERROR)
+
+class MissingSignatures(VerificationError):
+    def __init__(self, result, missing):
+        self.result = result
+        self.missing = missing
+    def __str__(self):
+        return ", ".join(k.subkeys[0].fpr for k in self.missing)