krb5/krb/init_ctx.c

	init_ctx.c revision 505d05c73a6e56769f263d4803b22eddd168ee24
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * lib/krb5/krb/init_ctx.c
 *
 * Copyright 1994,1999,2000, 2002, 2003  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.  Furthermore if you modify this software you must label
 * your software as modified software and not distribute it in such a
 * fashion that it might be confused with the original M.I.T. software.
 * 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_init_contex()
 */

/*
 * Copyright (C) 1998 by the FundsXpress, INC.
 *
 * 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 FundsXpress. not be used in advertising or publicity pertaining
 * to distribution of the software without specific, written prior
 * permission.  FundsXpress makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is" without express
 * or implied warranty.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#include <k5-int.h>

/*
 * Solaris Kerberos: the code related to EF/pkcs11 and fork safety are mods Sun
 * has made to the MIT code.
 */

#ifndef _KERNEL
#include <ctype.h>

pid_t __krb5_current_pid; /* fork safety: contains the current process ID */
#endif

#ifndef _KERNEL
#include <krb5_libinit.h>
#endif

/* The des-mdX entries are last for now, because it's easy to
   configure KDCs to issue TGTs with des-mdX keys and then not accept
   them.  This'll be fixed, but for better compatibility, let's prefer
   des-crc for now.  */
#define DEFAULT_ETYPE_LIST  \
    "aes256-cts-hmac-sha1-96 " \
    "aes128-cts-hmac-sha1-96 " \
    "des3-hmac-sha1 " \
    "arcfour-hmac-md5 " \
    "des-cbc-md5 " \
    "des-cbc-crc"


/* The only functions that are needed from this file when in kernel are
 * krb5_init_context and krb5_free_context.
 * In krb5_init_context we need only os_init_context since we don'it need the
 * profile info unless we do init/accept in kernel. Currently only mport,
 * delete , sign/verify, wrap/unwrap routines are ported to the kernel.
 */

#if (defined(_MSDOS) || defined(_WIN32))
extern krb5_error_code krb5_vercheck();
extern void krb5_win_ccdll_load(krb5_context context);
#endif

static krb5_error_code init_common (krb5_context *, krb5_boolean);

krb5_error_code KRB5_CALLCONV
krb5_init_context(context)
    krb5_context *context;
{
    return init_common (context, FALSE);
}

krb5_error_code KRB5_CALLCONV
krb5_init_secure_context(context)
    krb5_context *context;
{
    return init_common (context, TRUE);
}

#ifndef _KERNEL
krb5_error_code
krb5_open_pkcs11_session(CK_SESSION_HANDLE *hSession)
{
    krb5_error_code retval = 0;
    CK_RV rv;
    CK_SLOT_ID_PTR slotlist = NULL_PTR;
    CK_ULONG slotcount;
    CK_ULONG i;

    /* List of all Slots */
    rv = C_GetSlotList(FALSE, NULL_PTR, &slotcount);
    if (rv != CKR_OK) {
        KRB5_LOG(KRB5_ERR, "C_GetSlotList failed with 0x%x.", rv);
        retval = PKCS_ERR;
        goto cleanup;
    }

    if (slotcount == 0) {
        KRB5_LOG0(KRB5_ERR, "No slot is found in PKCS11.");
        retval = PKCS_ERR;
        goto cleanup;
    }

    slotlist = (CK_SLOT_ID_PTR)malloc(slotcount * sizeof(CK_SLOT_ID));
    if (slotlist == NULL) {
        KRB5_LOG0(KRB5_ERR, "malloc failed for slotcount.");
        retval = PKCS_ERR;
        goto cleanup;
    }

    rv = C_GetSlotList(FALSE, slotlist, &slotcount);
    if (rv != CKR_OK) {
        KRB5_LOG(KRB5_ERR, "C_GetSlotList failed with 0x%x", rv);
        retval = PKCS_ERR;
        goto cleanup;
    }
    for (i = 0; i < slotcount; i++) {
        if (slot_supports_krb5(slotlist + i))
            break;
    }
    if (i == slotcount){
        KRB5_LOG0(KRB5_ERR, "Could not find slot which supports "
           "Kerberos");
        retval = PKCS_ERR;
        goto cleanup;
    }
    rv = C_OpenSession(slotlist[i], CKF_SERIAL_SESSION, NULL_PTR, NULL_PTR,
        hSession);
    if (rv != CKR_OK) {
        retval = PKCS_ERR;
    }
cleanup:
    if (slotlist != NULL)
        free(slotlist);
    return(retval);
}

/*
 * krb5_reinit_ef_handle()
 *
 * deal with fork safety issue regarding the krb ctx and the pkcs11 hSession
 * field.  This function is called if it is determined that the krb ctx hSession
 * is being accessed in a child process after a fork().  This function
 * re-initilizes the pkcs11 session and returns the session handle.
 */
CK_SESSION_HANDLE
krb5_reinit_ef_handle(krb5_context ctx)
{
    ctx->cryptoki_initialized = FALSE;

    if (krb5_init_ef_handle(ctx) != 0) {
    /*
     * krb5_free_ef_handle() not needed here -- we assume that an equivalent
     * of C_Finalize() was done in the child-side of the fork(), so all EF
     * resources in this context will be invalid.
     */
    return(CK_INVALID_HANDLE);
    }

    /* reset the ctx pid since we're in a new process (child) */
    ctx->pid = __krb5_current_pid;

    /* If the RC4 handles were initialized, reset them here */
    if (ctx->arcfour_ctx.initialized) {
    krb5_error_code ret;
    ret = krb5_open_pkcs11_session(&ctx->arcfour_ctx.eSession);
        if (ret) {
        ctx->arcfour_ctx.initialized = 0;
        ctx->arcfour_ctx.eSession = CK_INVALID_HANDLE;
        C_CloseSession(ctx->hSession);
        ctx->hSession = CK_INVALID_HANDLE;
    }
        ret = krb5_open_pkcs11_session(&ctx->arcfour_ctx.dSession);
        if (ret) {
        ctx->arcfour_ctx.initialized = 0;
        ctx->arcfour_ctx.eSession = CK_INVALID_HANDLE;
        ctx->arcfour_ctx.dSession = CK_INVALID_HANDLE;
        C_CloseSession(ctx->hSession);
        ctx->hSession = CK_INVALID_HANDLE;
    }
    }

    /*
     * It is safe for this function to access ctx->hSession directly.  Do
     * NOT use the krb_ctx_hSession() here.
     */
    return(ctx->hSession);
}

/*
 * krb5_pthread_atfork_child_handler() sets a global that indicates the current
 * PID.  This is an optimization to keep getpid() from being called a zillion
 * times.
 */
void
krb5_pthread_atfork_child_handler()
{
    /*
     * __krb5_current_pid should always be set to current process ID, see the
     * definition of krb_ctx_hSession() for more info
     */
    __krb5_current_pid = getpid();
}

/*
 * krb5_ld_init() contains code that will be executed at load time (via the
 * ld -zinitarray directive).
 */
void
krb5_ld_init()
{
    /*
     * fork safety: __krb5_current_pid should always be set to current process
     * ID, see the definition of krb_ctx_hSession() for more info
     */
    __krb5_current_pid = getpid();
    /*
     * The child handler below will help reduce the number of times getpid() is
     * called by updating a global PID var. with the current PID whenever a fork
     * occurrs.
     */
    (void) pthread_atfork(NULL, NULL, krb5_pthread_atfork_child_handler);
}
#endif /* !_KERNEL */

krb5_error_code
krb5_init_ef_handle(krb5_context ctx)
{
    krb5_error_code retval = 0;
#ifndef _KERNEL
    CK_RV rv = C_Initialize(NULL_PTR);
    if ((rv != CKR_OK) && (rv != CKR_CRYPTOKI_ALREADY_INITIALIZED)) {
        KRB5_LOG(KRB5_ERR, "C_Initialize failed with 0x%x.", rv);
        return (PKCS_ERR);

    }
    /*
     * It is safe for this function to access ctx->hSession directly.  Do
     * NOT use the krb_ctx_hSession() here.
     */
    retval = krb5_open_pkcs11_session(&ctx->hSession);
    if (retval != 0)
        return (retval);

    ctx->cryptoki_initialized = TRUE;
#else /* ! _KERNEL */
    ctx->kef_cipher_mt = CRYPTO_MECH_INVALID;
    ctx->kef_hash_mt = CRYPTO_MECH_INVALID;
    ctx->kef_cksum_mt = CRYPTO_MECH_INVALID;

    setup_kef_keytypes();
    setup_kef_cksumtypes();

#endif /* ! _KERNEL */
    return(retval);
}

#ifndef _KERNEL
krb5_error_code
krb5_free_ef_handle(krb5_context ctx)
{
    /*
     * fork safety: Don't free any PKCS state if we've forked since
     * allocating the pkcs handles.
     */
    if (ctx->cryptoki_initialized == TRUE &&
        ctx->pid == __krb5_current_pid) {
        /*
         * It is safe for this function to access ctx->hSession
         * directly.  Do NOT use the krb_ctx_hSession() here.
         */
        if (ctx->hSession) {
            C_CloseSession(ctx->hSession);
            ctx->hSession = 0;
        }
        if (ctx->arcfour_ctx.dKey) {
            C_DestroyObject(ctx->arcfour_ctx.dSession,
                ctx->arcfour_ctx.dKey);
            ctx->arcfour_ctx.dKey = 0;
        }
        if (ctx->arcfour_ctx.eKey) {
            C_DestroyObject(ctx->arcfour_ctx.eSession,
                ctx->arcfour_ctx.eKey);
            ctx->arcfour_ctx.eKey = 0;
        }
        if (ctx->arcfour_ctx.eSession) {
            C_CloseSession(ctx->arcfour_ctx.eSession);
            ctx->arcfour_ctx.eSession = 0;
        }
        if (ctx->arcfour_ctx.dSession) {
            C_CloseSession(ctx->arcfour_ctx.dSession);
            ctx->arcfour_ctx.eSession = 0;
        }
        ctx->arcfour_ctx.initialized = 0;

        ctx->cryptoki_initialized = FALSE;
    }
    return(0);
}
#endif /* !_KERNEL */

static krb5_error_code
init_common (krb5_context *context, krb5_boolean secure)
{
    krb5_context ctx = 0;
    krb5_error_code retval;
#ifndef _KERNEL
    struct {
        krb5_int32 now, now_usec;
        long pid;
    } seed_data;
    krb5_data seed;
    int tmp;
#endif

#if (defined(_WIN32))
    /*
     * Load the krbcc32.dll if necessary.  We do this here so that
     * we know to use API: later on during initialization.
     * The context being NULL is ok.
     */
    krb5_win_ccdll_load(ctx);

    /*
     * krb5_vercheck() is defined in win_glue.c, and this is
     * where we handle the timebomb and version server checks.
     */
    retval = krb5_vercheck();
    if (retval)
        return retval;
#else /* assume UNIX for now */
#ifndef _KERNEL
    retval = krb5int_initialize_library ();
    if (retval)
        return retval;
#endif /* !_KERNEL */
#endif

    *context = 0;

    ctx = MALLOC(sizeof(struct _krb5_context));
    if (!ctx)
        return ENOMEM;
    (void) memset(ctx, 0, sizeof(struct _krb5_context));
    ctx->magic = KV5M_CONTEXT;

    ctx->profile_secure = secure;

    if ((retval = krb5_os_init_context(ctx)))
        goto cleanup;

    /*
     * Initialize the EF handle, its needed before doing
     * the random seed.
     */
    if ((retval = krb5_init_ef_handle(ctx)))
        goto cleanup;

#ifndef _KERNEL

    /* fork safety: set pid to current process ID for later checking */
    ctx->pid = __krb5_current_pid;

    /* Set the default encryption types, possible defined in krb5/conf */
    if ((retval = krb5_set_default_in_tkt_ktypes(ctx, NULL)))
        goto cleanup;

    if ((retval = krb5_set_default_tgs_ktypes(ctx, NULL)))
        goto cleanup;

    ctx->conf_tgs_ktypes = MALLOC(ctx->tgs_ktype_count * sizeof(krb5_enctype));
    if (ctx->conf_tgs_ktypes == NULL && ctx->tgs_ktype_count != 0)
            goto cleanup;

    (void) memcpy(ctx->conf_tgs_ktypes, ctx->tgs_ktypes,
        sizeof(krb5_enctype) * ctx->tgs_ktype_count);

    ctx->conf_tgs_ktypes_count = ctx->tgs_ktype_count;


    /* initialize the prng (not well, but passable) */
    if ((retval = krb5_crypto_us_timeofday(&seed_data.now, &seed_data.now_usec)))
        goto cleanup;
    seed_data.pid = getpid ();
    seed.length = sizeof(seed_data);
    seed.data = (char *) &seed_data;
    if ((retval = krb5_c_random_seed(ctx, &seed)))
        /*
         * Solaris Kerberos: we use /dev/urandom, which is
         * automatically seeded, so its OK if this fails.
         */
        retval = 0;

    ctx->default_realm = 0;
    profile_get_integer(ctx->profile, "libdefaults", "clockskew",
                0, 5 * 60, &tmp);
    ctx->clockskew = tmp;

#if 0
    /* Default ticket lifetime is currently not supported */
    profile_get_integer(ctx->profile, "libdefaults", "tkt_lifetime",
                0, 10 * 60 * 60, &tmp);
    ctx->tkt_lifetime = tmp;
#endif

    /* DCE 1.1 and below only support CKSUMTYPE_RSA_MD4 (2)  */
    /* DCE add kdc_req_checksum_type = 2 to krb5.conf */
    profile_get_integer(ctx->profile, "libdefaults",
                "kdc_req_checksum_type", 0, CKSUMTYPE_RSA_MD5,
                &tmp);
    ctx->kdc_req_sumtype = tmp;

    profile_get_integer(ctx->profile, "libdefaults",
                "ap_req_checksum_type", 0, CKSUMTYPE_RSA_MD5,
                &tmp);
    ctx->default_ap_req_sumtype = tmp;

    profile_get_integer(ctx->profile, "libdefaults",
                "safe_checksum_type", 0,
                CKSUMTYPE_RSA_MD5_DES, &tmp);
    ctx->default_safe_sumtype = tmp;

    profile_get_integer(ctx->profile, "libdefaults",
                "kdc_default_options", 0,
                KDC_OPT_RENEWABLE_OK, &tmp);
    ctx->kdc_default_options = tmp;
#define DEFAULT_KDC_TIMESYNC 1
    profile_get_integer(ctx->profile, "libdefaults",
                "kdc_timesync", 0, DEFAULT_KDC_TIMESYNC,
                &tmp);
    ctx->library_options = tmp ? KRB5_LIBOPT_SYNC_KDCTIME : 0;

    /*
     * We use a default file credentials cache of 3.  See
     * lib/krb5/krb/ccache/file/fcc.h for a description of the
     * credentials cache types.
     *
     * Note: DCE 1.0.3a only supports a cache type of 1
     *  DCE 1.1 supports a cache type of 2.
     */
#ifdef macintosh
#define DEFAULT_CCACHE_TYPE 4
#else
#define DEFAULT_CCACHE_TYPE 3
#endif
    profile_get_integer(ctx->profile, "libdefaults", "ccache_type",
                0, DEFAULT_CCACHE_TYPE, &tmp);
    ctx->fcc_default_format = tmp + 0x0500;
    ctx->scc_default_format = tmp + 0x0500;
    ctx->prompt_types = 0;
    ctx->use_conf_ktypes = 0;

    /*
     * Solaris Kerberos: simplifying config by hard-coding udp_pref_limit
     */
    ctx->udp_pref_limit = DEFAULT_UDP_PREF_LIMIT;

#endif  /* !_KERNEL */

    *context = ctx;
    return 0;

cleanup:
    krb5_free_context(ctx);
    return retval;
}

void KRB5_CALLCONV
krb5_free_context(krb5_context ctx)
{
    KRB5_LOG0(KRB5_INFO,"krb5_free_context() start");

#ifndef _KERNEL
    krb5_free_ef_handle(ctx);

     if (ctx->conf_tgs_ktypes) {
     FREE(ctx->conf_tgs_ktypes, sizeof(krb5_enctype) *(ctx->conf_tgs_ktypes_count));
     ctx->conf_tgs_ktypes = 0;
     ctx->conf_tgs_ktypes_count = 0;
     }

#endif
     krb5_os_free_context(ctx);

     if (ctx->in_tkt_ktypes) {
          FREE(ctx->in_tkt_ktypes, sizeof(krb5_enctype) *(ctx->in_tkt_ktype_count+1) );
      ctx->in_tkt_ktypes = 0;
     }

     if (ctx->tgs_ktypes) {
          FREE(ctx->tgs_ktypes, sizeof(krb5_enctype) *(ctx->tgs_ktype_count+1));
      ctx->tgs_ktypes = 0;
     }

     if (ctx->default_realm) {
      FREE(ctx->default_realm, strlen(ctx->default_realm) + 1);
      ctx->default_realm = 0;
     }

     if (ctx->ser_ctx_count && ctx->ser_ctx) {
      FREE(ctx->ser_ctx,sizeof(krb5_ser_entry) * (ctx->ser_ctx_count) );
      ctx->ser_ctx = 0;
      ctx->ser_ctx_count = 0;
     }

     ctx->magic = 0;
     FREE(ctx, sizeof(struct _krb5_context));

}

#ifndef _KERNEL
/*
 * Set the desired default ktypes, making sure they are valid.
 */
krb5_error_code
krb5_set_default_in_tkt_ktypes(krb5_context context, const krb5_enctype *ktypes)
{
    krb5_enctype * new_ktypes;
    int i;

    if (ktypes) {
    for (i = 0; ktypes[i]; i++) {
        if (!krb5_c_valid_enctype(ktypes[i]))
        return KRB5_PROG_ETYPE_NOSUPP;
    }

    /* Now copy the default ktypes into the context pointer */
    if ((new_ktypes = (krb5_enctype *)malloc(sizeof(krb5_enctype) * i)))
        (void) memcpy(new_ktypes, ktypes, sizeof(krb5_enctype) * i);
    else
        return ENOMEM;

    } else {
    i = 0;
    new_ktypes = 0;
    }

    if (context->in_tkt_ktypes)
        free(context->in_tkt_ktypes);
    context->in_tkt_ktypes = new_ktypes;
    context->in_tkt_ktype_count = i;
    return 0;
}

static krb5_error_code
get_profile_etype_list(krb5_context context, krb5_enctype **ktypes, char *profstr,
               int ctx_count, krb5_enctype *ctx_list)
{
    krb5_enctype *old_ktypes = NULL;

    if (ctx_count) {
    /* application-set defaults */
    if ((old_ktypes =
         (krb5_enctype *)malloc(sizeof(krb5_enctype) *
                    (ctx_count + 1)))) {
        (void) memcpy(old_ktypes, ctx_list,
        sizeof(krb5_enctype) * ctx_count);
        old_ktypes[ctx_count] = 0;
    } else {
        return ENOMEM;
    }
    } else {
        /*
       XXX - For now, we only support libdefaults
       Perhaps this should be extended to allow for per-host / per-realm
       session key types.
     */

    char *retval = NULL;
    char *sp, *ep;
    int j, checked_enctypes, count;
    krb5_error_code code;

    code = profile_get_string(context->profile, "libdefaults", profstr,
                  NULL, DEFAULT_ETYPE_LIST, &retval);
    if (code)
        return code;

    if (!retval)  /* SUNW14resync - just in case */
            return PROF_EINVAL;  /* XXX */

    count = 0;
    sp = retval;
    while (*sp) {
        for (ep = sp; *ep && (*ep != ',') && !isspace((int) (*ep)); ep++)
        ;
        if (*ep) {
        *ep++ = '\0';
        while (isspace((int) (*ep)) || *ep == ',')
            *ep++ = '\0';
        }
        count++;
        sp = ep;
    }

    if ((old_ktypes =
         (krb5_enctype *)malloc(sizeof(krb5_enctype) * (count + 1))) ==
        (krb5_enctype *) NULL)
        return ENOMEM;

    sp = retval;
    j = checked_enctypes = 0;
    /*CONSTCOND*/
    while (TRUE) {
        checked_enctypes++;
        if (krb5_string_to_enctype(sp, &old_ktypes[j]))
        old_ktypes[j] = (unsigned int)ENCTYPE_UNKNOWN;

        /*
         * If 'null' has been specified as a tkt_enctype in
         * krb5.conf, we need to assign an ENCTYPE_UNKNOWN
         * value to the corresponding old_ktypes[j] entry.
         */
        if (old_ktypes[j] == (unsigned int)ENCTYPE_NULL)
        old_ktypes[j] = (unsigned int)ENCTYPE_UNKNOWN;

        /* Only include known/valid enctypes in the final list */
        if (old_ktypes[j] != ENCTYPE_UNKNOWN) {
        j++;
        }
        /* If we checked all the enctypes, we are done */
        if (checked_enctypes == count) {
        break;
        }

        /* skip to next token */
        while (*sp) sp++;
        while (!*sp) sp++;
    }

    old_ktypes[j] = (krb5_enctype) 0;
    profile_release_string(retval);
    }

    if (old_ktypes[0] == 0) {
    free (old_ktypes);
    *ktypes = 0;
    return KRB5_CONFIG_ETYPE_NOSUPP;
    }


    *ktypes = old_ktypes;
    return 0;
}

krb5_error_code
krb5_get_default_in_tkt_ktypes(krb5_context context, krb5_enctype **ktypes)
{
    return(get_profile_etype_list(context, ktypes, "default_tkt_enctypes",
                  context->in_tkt_ktype_count,
                  context->in_tkt_ktypes));
}

krb5_error_code
krb5_set_default_tgs_enctypes (krb5_context context, const krb5_enctype *ktypes)
{
    krb5_enctype * new_ktypes;
    int i;

    if (ktypes) {
    for (i = 0; ktypes[i]; i++) {
        if (!valid_enctype(ktypes[i]))
        return KRB5_PROG_ETYPE_NOSUPP;
    }

    /* Now copy the default ktypes into the context pointer */
    if ((new_ktypes = (krb5_enctype *)malloc(sizeof(krb5_enctype) * i)))
        (void) memcpy(new_ktypes, ktypes, sizeof(krb5_enctype) * i);
    else
        return ENOMEM;

    } else {
    i = 0;
    new_ktypes = (krb5_enctype *)NULL;
    }

    if (context->tgs_ktypes)
        krb5_free_ktypes(context, context->tgs_ktypes);
    context->tgs_ktypes = new_ktypes;
    context->tgs_ktype_count = i;
    return 0;
}

krb5_error_code krb5_set_default_tgs_ktypes
(krb5_context context, const krb5_enctype *etypes)
{
  return (krb5_set_default_tgs_enctypes (context, etypes));
}


/*ARGSUSED*/
void
KRB5_CALLCONV
krb5_free_ktypes (krb5_context context, krb5_enctype *val)
{
    free (val);
}

/*ARGSUSED*/
krb5_error_code
KRB5_CALLCONV
krb5_get_tgs_ktypes(krb5_context context, krb5_const_principal princ, krb5_enctype **ktypes)
{
    if (context->use_conf_ktypes)
    /* This one is set *only* by reading the config file; it's not
       set by the application.  */
    return(get_profile_etype_list(context, ktypes, "default_tgs_enctypes",
                                      context->conf_tgs_ktypes_count,
                                      context->conf_tgs_ktypes));
    else
    return(get_profile_etype_list(context, ktypes, "default_tgs_enctypes",
                  context->tgs_ktype_count,
                  context->tgs_ktypes));
}

krb5_error_code
krb5_get_permitted_enctypes(krb5_context context, krb5_enctype **ktypes)
{
    return(get_profile_etype_list(context, ktypes, "permitted_enctypes",
                  context->tgs_ktype_count,
                  context->tgs_ktypes));
}

krb5_boolean
krb5_is_permitted_enctype(krb5_context context, krb5_enctype etype)
{
    krb5_enctype *list, *ptr;
    krb5_boolean ret;

    if (krb5_get_permitted_enctypes(context, &list))
    return(0);


    ret = 0;

    for (ptr = list; *ptr; ptr++)
    if (*ptr == etype)
        ret = 1;

    krb5_free_ktypes (context, list);

    return(ret);
}
#endif /* !KERNEL */