* ms2mit.c:

* ms2mit.c:

    Functional changes:
    (1) do not restrict ourselves to DES-CBC-CRC instead support any
        ticket with an enctype we support.  as of this date (rev 1.3)
        this includes all but RC4-MD4.
    (2) do not accept invalid tickets
    (3) when attempting to retrieve tickets do not specify either the
        enctype or cache options (if possible).  doing so will force a
        TGS request and prevent the results from being stored into the
        cache.
    (4) when the LSA cache contains a TGT which has expired Microsoft will
        not perform a new TGS request until the cache has been purged.
        Instead the expired ticket continues to be used along with its
        embedded authorization data.  When PURGE_ENABLED is defined, if the
        tickets are expired, the cache will be purged before requesting
        new tickets, else we ignore the contents of the cache and force
        a new TGS request.
    (5) when the LSA cache is empty do not abort.  On XP or 2003, use
        the SecurityLogonSessionData to determine the Realm (UserDnsDomain
        in MS-speak) and request an appropriate TGT.  On 2000, check the
        Registry for the HKCU\"Volatile Environment":"USERDNSDOMAIN"
        instead.  This will allow ms2mit to be used to repopulate the
        LSA cache.  If the current session is not Kerberos authenticated
        an appropriate error message will be generated.

    Code changes:
    (1) several memory leaks plugged
    (2) several support functions copied from the Leashw32.dll sources
    (3) get_STRING_from_registry() uses the ANSI versions of the Registry
        functions and should at a later date be converted to use the
        Unicode versions.

    Notes: an ms2mit.exe based on the Leash_import() function
    should be considered.  Leash_import() not only imports the TGT from
    the LSA but also performs the krb524 conversion and AFS token retrieval.
    Of course, that version of ms2mit.exe could not exist within the krb5
    source tree.

ticket: 1667
target_version: 1.3.1
tags: pullup
owner: jaltman@mit.edu
status: resolved

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@15696 dc483132-0cff-0310-8789-dd5450dbe970