root/trunk/scalemail-courier-map-percent-to-at

#!/usr/bin/python
# "pop3\nlogin\ntest%example.com\npassword\n\n"

import os, sys, traceback

EX_OK=0
EX_TEMPFAIL=75
EX_USAGE=64
EX_NOUSER=67
EX_NOHOST=68

def die(s):
    print >>sys.stderr, "scalemail-courier-map-percent-to-at: %s" % s
    sys.exit(EX_USAGE)

def main():
    if not sys.argv[1:]:
        die("Need to provide some arguments")
    if os.getenv('AUTHENTICATED'):
        os.execlp(sys.argv[1], *sys.argv[1:])
        die("Something is very wrong")

    f = os.fdopen(3)
    service = f.readline()
    authtype = f.readline()
    authdata = f.read()
    f.close()

    if authtype.rstrip() == 'login':    
        lines = authdata.splitlines(True)
        lines[0] = lines[0].replace('%', '@')
        authdata = ''.join(lines)
    data = ''.join([service, authtype, authdata])

    r, w = os.pipe()
    pid = os.fork()
    if pid:
        # parent
        os.close(w)
        os.dup2(r, 3)
        os.execlp(sys.argv[1], *sys.argv[1:])
        die("Something is very wrong")
    else:
        # child
        while data:
            n = os.write(w, data)
            data = data[n:]
        sys.exit(0)

if __name__=='__main__':
    try:
        main()
    except SystemExit:
        raise
    except:
        try:
            traceback.print_exc(file=sys.stderr)
        finally:
            sys.exit(EX_TEMPFAIL)