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Code Issues Releases Activity

Escape strings properly in the Dovecot dict dialect

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kaiyou 2018-09-27 13:48:28 +02:00 committed by Alexander Graf
parent 814bb1f36d
commit 23e5aa2e05
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GPG Key ID: B8A9DC143E075629
1 changed files with 23 additions and 3 deletions
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26
core/base/libs/podop/podop/dovecot.py
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@ -125,9 +125,7 @@ class DictProtocol(asyncio.Protocol):
def reply(self, command, *args):
logging.debug("Replying {} with {}".format(command, args))
self.transport.write(command)
self.transport.write(b"\t".join(
arg.replace(b"\t", b"\t\t") for arg in args
))
self.transport.write(b"\t".join(map(tabescape, args)))
self.transport.write(b"\n")
@classmethod
@ -143,3 +141,25 @@ class DictProtocol(asyncio.Protocol):
ord("C"): process_commit,
ord("S"): process_set
}
def tabescape(unescaped):
""" Escape a string using the specific Dovecot tabescape
See: https://github.com/dovecot/core/blob/master/src/lib/strescape.c
"""
return unescaped.replace(b"\x01", b"\x011")\
.replace(b"\x00", b"\x010")\
.replace(b"\t", b"\x01t")\
.replace(b"\n", b"\x01n")\
.replace(b"\r", b"\x01r")
def tabunescape(escaped):
""" Unescape a string using the specific Dovecot tabescape
See: https://github.com/dovecot/core/blob/master/src/lib/strescape.c
"""
return escaped.replace(b"\x01r", b"\r")\
.replace(b"\x01n", b"\n")\
.replace(b"\x01t", b"\t")\
.replace(b"\x010", b"\x00")\
.replace(b"\x011", b"\x01")