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/*
* lib/krb5/krb/rd_req.c
*
* Copyright 1990,1991 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* krb5_rd_req()
*/
#include "k5-int.h"
#include "auth_con.h"
/*
* Parses a KRB_AP_REQ message, returning its contents.
*
* server specifies the expected server's name for the ticket.
*
* keyproc specifies a procedure to generate a decryption key for the
* ticket. If keyproc is non-NULL, keyprocarg is passed to it, and the result
* used as a decryption key. If keyproc is NULL, then fetchfrom is checked;
* if it is non-NULL, it specifies a parameter name from which to retrieve the
* decryption key. If fetchfrom is NULL, then the default key store is
* consulted.
*
* returns system errors, encryption errors, replay errors
*/
KRB5_DLLIMP krb5_error_code KRB5_CALLCONV
krb5_rd_req(context, auth_context, inbuf, server, keytab,
ap_req_options, ticket)
krb5_context context;
krb5_auth_context FAR * auth_context;
const krb5_data FAR * inbuf;
krb5_const_principal server; /* XXX do we really need this */
krb5_keytab keytab;
krb5_flags FAR * ap_req_options;
krb5_ticket FAR *FAR * ticket;
{
krb5_error_code retval;
krb5_ap_req * request;
krb5_auth_context new_auth_context;
krb5_keytab new_keytab = NULL;
if (!krb5_is_ap_req(inbuf))
return KRB5KRB_AP_ERR_MSG_TYPE;
if ((retval = decode_krb5_ap_req(inbuf, &request))) {
switch (retval) {
case KRB5_BADMSGTYPE:
return KRB5KRB_AP_ERR_BADVERSION;
default:
return(retval);
}
}
/* Get an auth context if necessary. */
new_auth_context = NULL;
if (*auth_context == NULL) {
if ((retval = krb5_auth_con_init(context, &new_auth_context)))
goto cleanup_request;
*auth_context = new_auth_context;
}
/* Get an rcache if necessary. */
if (((*auth_context)->rcache == NULL) && server) {
if ((retval = krb5_get_server_rcache(context,
krb5_princ_component(context,server,0), &(*auth_context)->rcache)))
goto cleanup_auth_context;
}
/* Get a keytab if necessary. */
if (keytab == NULL) {
if ((retval = krb5_kt_default(context, &new_keytab)))
goto cleanup_auth_context;
keytab = new_keytab;
}
retval = krb5_rd_req_decoded(context, auth_context, request, server,
keytab, ap_req_options, ticket);
if (new_keytab != NULL)
(void) krb5_kt_close(context, new_keytab);
cleanup_auth_context:
if (new_auth_context && retval) {
krb5_auth_con_free(context, new_auth_context);
*auth_context = NULL;
}
cleanup_request:
krb5_free_ap_req(context, request);
return retval;
}
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