This patch creates a mapping in the mechglue/spnego code to modify
mechanism status codes when passing them back to the application, so
that mechglue's display_status dispatcher can determine the correct
mechanism to dispatch to.

This is part of the "get enhanced error messages from gssapi
applications" project; ticket 5590 has updates to the Kerberos 5
mechanism to extract enhanced error messages (when there are any) from
the Kerberos library.


util/gen.pl, util/t_*.pm: New code generation script and templates.

lib/gssapi/generic: Add a new, global mapping that enumerates the
{mechOID,status} pairs as they're seen, allowing a magic mechOID value
to indicate com_err error codes from mechglue and spnego, and
reserving status code 0 for unknown errors.  Preload the Kerberos
"wrong principal" error code once for each mechanism OID used for
Kerberos, so the entries get fixed positions (1-3) in the table.

lib/gssapi/gss_libinit.c: Call the initializer and destructor
functions.

lib/gssapi/mechglue, lib/gssapi/spnego: Enter all mechanism-generated
or locally-generated status codes into the mapping table, and return
the table index to the application.  Do the reverse in display_status,
to get the messages from the mechanism..

lib/rpc: Define new function gssrpcint_printf to use for debugging
instead of printf, to redirect output away from dejagnu; add a couple
more debugging calls.  Check for minor status codes 1-3 now instead of
KRB5KRB_AP_WRONG_PRINC.

tests/dejagnu/krb-standalone/gssftp.exp: Test getting more detailed
error messages back, by having the ftp client attempt to authenticate
to a non-existent service, and examining the error message for the
service principal name.

Commit By: raeburn



Revision: 19831
Changed Files:
U   trunk/src/lib/gssapi/generic/Makefile.in
U   trunk/src/lib/gssapi/generic/gssapiP_generic.h
A   trunk/src/lib/gssapi/generic/maptest.c
A   trunk/src/lib/gssapi/generic/util_errmap.c
U   trunk/src/lib/gssapi/gss_libinit.c
U   trunk/src/lib/gssapi/mechglue/g_accept_sec_context.c
U   trunk/src/lib/gssapi/mechglue/g_acquire_cred.c
U   trunk/src/lib/gssapi/mechglue/g_canon_name.c
U   trunk/src/lib/gssapi/mechglue/g_compare_name.c
U   trunk/src/lib/gssapi/mechglue/g_context_time.c
U   trunk/src/lib/gssapi/mechglue/g_delete_sec_context.c
U   trunk/src/lib/gssapi/mechglue/g_dsp_name.c
U   trunk/src/lib/gssapi/mechglue/g_dsp_status.c
U   trunk/src/lib/gssapi/mechglue/g_dup_name.c
U   trunk/src/lib/gssapi/mechglue/g_exp_sec_context.c
U   trunk/src/lib/gssapi/mechglue/g_glue.c
U   trunk/src/lib/gssapi/mechglue/g_imp_name.c
U   trunk/src/lib/gssapi/mechglue/g_imp_sec_context.c
U   trunk/src/lib/gssapi/mechglue/g_init_sec_context.c
U   trunk/src/lib/gssapi/mechglue/g_initialize.c
U   trunk/src/lib/gssapi/mechglue/g_inq_context.c
U   trunk/src/lib/gssapi/mechglue/g_inq_cred.c
U   trunk/src/lib/gssapi/mechglue/g_inq_names.c
U   trunk/src/lib/gssapi/mechglue/g_mechname.c
U   trunk/src/lib/gssapi/mechglue/g_oid_ops.c
U   trunk/src/lib/gssapi/mechglue/g_process_context.c
U   trunk/src/lib/gssapi/mechglue/g_rel_cred.c
U   trunk/src/lib/gssapi/mechglue/g_seal.c
U   trunk/src/lib/gssapi/mechglue/g_sign.c
U   trunk/src/lib/gssapi/mechglue/g_store_cred.c
U   trunk/src/lib/gssapi/mechglue/g_unseal.c
U   trunk/src/lib/gssapi/mechglue/g_verify.c
U   trunk/src/lib/gssapi/mechglue/mglueP.h
U   trunk/src/lib/gssapi/mechglue/oid_ops.c
U   trunk/src/lib/gssapi/spnego/spnego_mech.c
U   trunk/src/lib/rpc/auth_gssapi_misc.c
U   trunk/src/lib/rpc/svc_auth_gssapi.c
U   trunk/src/tests/dejagnu/krb-standalone/gssftp.exp
A   trunk/src/util/gen.pl
A   trunk/src/util/t_array.pm
A   trunk/src/util/t_enum.pm
A   trunk/src/util/t_template.pm
A   trunk/src/util/t_tsenum.pm