Exemplo n.º 1
0
/**
 * This function adds an HDB entry's current keyset to the entry's key
 * history.  The current keyset is left alone; the caller is responsible
 * for freeing it.
 *
 * @param context   Context
 * @param entry	    HDB entry
 */
krb5_error_code
hdb_add_current_keys_to_history(krb5_context context, hdb_entry *entry)
{
    krb5_boolean replace = FALSE;
    krb5_error_code ret;
    HDB_extension *ext;
    HDB_Ext_KeySet *keys;
    hdb_keyset newkeyset;
    time_t newtime;

    if (entry->keys.len == 0)
	return 0; /* nothing to do */

    ext = hdb_find_extension(entry, choice_HDB_extension_data_hist_keys);
    if (ext == NULL) {
	replace = TRUE;
	ext = calloc(1, sizeof (*ext));
	if (ext == NULL)
	    return krb5_enomem(context);

	ext->data.element = choice_HDB_extension_data_hist_keys;
    }
    keys = &ext->data.u.hist_keys;

    ext->mandatory = FALSE;

    /*
     * Copy in newest old keyset
     */
    ret = hdb_entry_get_pw_change_time(entry, &newtime);
    if (ret)
	goto out;

    memset(&newkeyset, 0, sizeof(newkeyset));
    newkeyset.keys = entry->keys;
    newkeyset.kvno = entry->kvno;
    newkeyset.set_time = &newtime;

    ret = add_HDB_Ext_KeySet(keys, &newkeyset);
    if (ret)
	goto out;

    if (replace) {
	/* hdb_replace_extension() deep-copies ext; what a waste */
	ret = hdb_replace_extension(context, entry, ext);
	if (ret)
	    goto out;
    }

    ret = hdb_prune_keys(context, entry);
    if (ret)
	goto out;

 out:
    if (replace && ext) {
	free_HDB_extension(ext);
	free(ext);
    }
    return ret;
}
Exemplo n.º 2
0
kadm5_ret_t
kadm5_s_get_principal(void *server_handle,
		      krb5_principal princ,
		      kadm5_principal_ent_t out,
		      uint32_t mask)
{
    kadm5_server_context *context = server_handle;
    kadm5_ret_t ret;
    hdb_entry_ex ent;

    memset(&ent, 0, sizeof(ent));

    if (!context->keep_open) {
	ret = context->db->hdb_open(context->context, context->db, O_RDONLY, 0);
	if(ret)
	    return ret;
    }
    ret = context->db->hdb_fetch_kvno(context->context, context->db, princ,
				      HDB_F_DECRYPT|HDB_F_ALL_KVNOS|
				      HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent);
    if (!context->keep_open)
	context->db->hdb_close(context->context, context->db);
    if(ret)
	return _kadm5_error_code(ret);

    memset(out, 0, sizeof(*out));
    if(mask & KADM5_PRINCIPAL)
	ret  = krb5_copy_principal(context->context, ent.entry.principal,
				   &out->principal);
    if(ret)
	goto out;
    if(mask & KADM5_PRINC_EXPIRE_TIME && ent.entry.valid_end)
	out->princ_expire_time = *ent.entry.valid_end;
    if(mask & KADM5_PW_EXPIRATION && ent.entry.pw_end)
	out->pw_expiration = *ent.entry.pw_end;
    if(mask & KADM5_LAST_PWD_CHANGE)
	hdb_entry_get_pw_change_time(&ent.entry, &out->last_pwd_change);
    if(mask & KADM5_ATTRIBUTES){
	out->attributes |= ent.entry.flags.postdate ? 0 : KRB5_KDB_DISALLOW_POSTDATED;
	out->attributes |= ent.entry.flags.forwardable ? 0 : KRB5_KDB_DISALLOW_FORWARDABLE;
	out->attributes |= ent.entry.flags.initial ? KRB5_KDB_DISALLOW_TGT_BASED : 0;
	out->attributes |= ent.entry.flags.renewable ? 0 : KRB5_KDB_DISALLOW_RENEWABLE;
	out->attributes |= ent.entry.flags.proxiable ? 0 : KRB5_KDB_DISALLOW_PROXIABLE;
	out->attributes |= ent.entry.flags.invalid ? KRB5_KDB_DISALLOW_ALL_TIX : 0;
	out->attributes |= ent.entry.flags.require_preauth ? KRB5_KDB_REQUIRES_PRE_AUTH : 0;
	out->attributes |= ent.entry.flags.server ? 0 : KRB5_KDB_DISALLOW_SVR;
	out->attributes |= ent.entry.flags.change_pw ? KRB5_KDB_PWCHANGE_SERVICE : 0;
	out->attributes |= ent.entry.flags.ok_as_delegate ? KRB5_KDB_OK_AS_DELEGATE : 0;
	out->attributes |= ent.entry.flags.trusted_for_delegation ? KRB5_KDB_TRUSTED_FOR_DELEGATION : 0;
	out->attributes |= ent.entry.flags.allow_kerberos4 ? KRB5_KDB_ALLOW_KERBEROS4 : 0;
	out->attributes |= ent.entry.flags.allow_digest ? KRB5_KDB_ALLOW_DIGEST : 0;
    }
    if(mask & KADM5_MAX_LIFE) {
	if(ent.entry.max_life)
	    out->max_life = *ent.entry.max_life;
	else
	    out->max_life = INT_MAX;
    }
    if(mask & KADM5_MOD_TIME) {
	if(ent.entry.modified_by)
	    out->mod_date = ent.entry.modified_by->time;
	else
	    out->mod_date = ent.entry.created_by.time;
    }
    if(mask & KADM5_MOD_NAME) {
	if(ent.entry.modified_by) {
	    if (ent.entry.modified_by->principal != NULL)
		ret = krb5_copy_principal(context->context,
					  ent.entry.modified_by->principal,
					  &out->mod_name);
	} else if(ent.entry.created_by.principal != NULL)
	    ret = krb5_copy_principal(context->context,
				      ent.entry.created_by.principal,
				      &out->mod_name);
	else
	    out->mod_name = NULL;
    }
    if(ret)
	goto out;

    if(mask & KADM5_KVNO)
	out->kvno = ent.entry.kvno;
    if(mask & KADM5_MKVNO) {
	size_t n;
	out->mkvno = 0; /* XXX */
	for(n = 0; n < ent.entry.keys.len; n++)
	    if(ent.entry.keys.val[n].mkvno) {
		out->mkvno = *ent.entry.keys.val[n].mkvno; /* XXX this isn't right */
		break;
	    }
    }
#if 0 /* XXX implement */
    if(mask & KADM5_AUX_ATTRIBUTES)
	;
    if(mask & KADM5_LAST_SUCCESS)
	;
    if(mask & KADM5_LAST_FAILED)
	;
    if(mask & KADM5_FAIL_AUTH_COUNT)
	;
#endif
    if(mask & KADM5_POLICY) {
	HDB_extension *ext;

	ext = hdb_find_extension(&ent.entry, choice_HDB_extension_data_policy);
	if (ext == NULL) {
	    out->policy = strdup("default");
	    /* It's OK if we retun NULL instead of "default" */
	} else {
	    out->policy = strdup(ext->data.u.policy);
	    if (out->policy == NULL) {
		ret = ENOMEM;
		goto out;
	    }
	}
    }
    if(mask & KADM5_MAX_RLIFE) {
	if(ent.entry.max_renew)
	    out->max_renewable_life = *ent.entry.max_renew;
	else
	    out->max_renewable_life = INT_MAX;
    }
    if(mask & KADM5_KEY_DATA){
	size_t i;
	size_t n_keys = ent.entry.keys.len;
	krb5_salt salt;
	HDB_extension *ext;
	HDB_Ext_KeySet *hist_keys = NULL;

	ext = hdb_find_extension(&ent.entry, choice_HDB_extension_data_hist_keys);
	if (ext != NULL)
	    hist_keys = &ext->data.u.hist_keys;

	krb5_get_pw_salt(context->context, ent.entry.principal, &salt);
	for (i = 0; hist_keys != NULL && i < hist_keys->len; i++)
	    n_keys += hist_keys->val[i].keys.len;
	out->key_data = malloc(n_keys * sizeof(*out->key_data));
	if (out->key_data == NULL && n_keys != 0) {
	    ret = ENOMEM;
	    goto out;
	}
	out->n_key_data = 0;
	ret = copy_keyset_to_kadm5(context, ent.entry.kvno, ent.entry.keys.len,
				   ent.entry.keys.val, &salt, out);
	if (ret)
	    goto out;
	for (i = 0; hist_keys != NULL && i < hist_keys->len; i++) {
	    ret = copy_keyset_to_kadm5(context, hist_keys->val[i].kvno,
				       hist_keys->val[i].keys.len,
				       hist_keys->val[i].keys.val,
				       &salt, out);
	    if (ret)
		goto out;
	}
	krb5_free_salt(context->context, salt);
	assert( out->n_key_data == n_keys );
    }
    if(ret){
	kadm5_free_principal_ent(context, out);
	goto out;
    }
    if(mask & KADM5_TL_DATA) {
	time_t last_pw_expire;
	const HDB_Ext_PKINIT_acl *acl;
	const HDB_Ext_Aliases *aliases;

	ret = hdb_entry_get_pw_change_time(&ent.entry, &last_pw_expire);
	if (ret == 0 && last_pw_expire) {
	    unsigned char buf[4];
	    _krb5_put_int(buf, last_pw_expire, sizeof(buf));
	    ret = add_tl_data(out, KRB5_TL_LAST_PWD_CHANGE, buf, sizeof(buf));
	}
	if(ret){
	    kadm5_free_principal_ent(context, out);
	    goto out;
	}
	/*
	 * If the client was allowed to get key data, let it have the
	 * password too.
	 */
	if(mask & KADM5_KEY_DATA) {
	    heim_utf8_string pw;

	    ret = hdb_entry_get_password(context->context,
					 context->db, &ent.entry, &pw);
	    if (ret == 0) {
		ret = add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1);
		free(pw);
	    }
	    krb5_clear_error_message(context->context);
	}

	ret = hdb_entry_get_pkinit_acl(&ent.entry, &acl);
	if (ret == 0 && acl) {
	    krb5_data buf;
	    size_t len;

	    ASN1_MALLOC_ENCODE(HDB_Ext_PKINIT_acl, buf.data, buf.length,
				acl, &len, ret);
	    if (ret) {
		kadm5_free_principal_ent(context, out);
		goto out;
	    }
	    if (len != buf.length)
		krb5_abortx(context->context,
			    "internal ASN.1 encoder error");
	    ret = add_tl_data(out, KRB5_TL_PKINIT_ACL, buf.data, buf.length);
	    free(buf.data);
	    if (ret) {
		kadm5_free_principal_ent(context, out);
		goto out;
	    }
	}
	if(ret){
	    kadm5_free_principal_ent(context, out);
	    goto out;
	}

	ret = hdb_entry_get_aliases(&ent.entry, &aliases);
	if (ret == 0 && aliases) {
	    krb5_data buf;
	    size_t len;

	    ASN1_MALLOC_ENCODE(HDB_Ext_Aliases, buf.data, buf.length,
			       aliases, &len, ret);
	    if (ret) {
		kadm5_free_principal_ent(context, out);
		goto out;
	    }
	    if (len != buf.length)
		krb5_abortx(context->context,
			    "internal ASN.1 encoder error");
	    ret = add_tl_data(out, KRB5_TL_ALIASES, buf.data, buf.length);
	    free(buf.data);
	    if (ret) {
		kadm5_free_principal_ent(context, out);
		goto out;
	    }
	}
	if(ret){
	    kadm5_free_principal_ent(context, out);
	    goto out;
	}

    }
out:
    hdb_free_entry(context->context, &ent);

    return _kadm5_error_code(ret);
}
Exemplo n.º 3
0
kadm5_ret_t
kadm5_s_get_principal(void *server_handle,
		      krb5_principal princ,
		      kadm5_principal_ent_t out,
		      uint32_t mask)
{
    kadm5_server_context *context = server_handle;
    kadm5_ret_t ret;
    hdb_entry_ex ent;

    memset(&ent, 0, sizeof(ent));
    ret = context->db->hdb_open(context->context, context->db, O_RDONLY, 0);
    if(ret)
	return ret;
    ret = context->db->hdb_fetch_kvno(context->context, context->db, princ,
				      HDB_F_DECRYPT|HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent);
    context->db->hdb_close(context->context, context->db);
    if(ret)
	return _kadm5_error_code(ret);

    memset(out, 0, sizeof(*out));
    if(mask & KADM5_PRINCIPAL)
	ret  = krb5_copy_principal(context->context, ent.entry.principal,
				   &out->principal);
    if(ret)
	goto out;
    if(mask & KADM5_PRINC_EXPIRE_TIME && ent.entry.valid_end)
	out->princ_expire_time = *ent.entry.valid_end;
    if(mask & KADM5_PW_EXPIRATION && ent.entry.pw_end)
	out->pw_expiration = *ent.entry.pw_end;
    if(mask & KADM5_LAST_PWD_CHANGE)
	hdb_entry_get_pw_change_time(&ent.entry, &out->last_pwd_change);
    if(mask & KADM5_ATTRIBUTES){
	out->attributes |= ent.entry.flags.postdate ? 0 : KRB5_KDB_DISALLOW_POSTDATED;
	out->attributes |= ent.entry.flags.forwardable ? 0 : KRB5_KDB_DISALLOW_FORWARDABLE;
	out->attributes |= ent.entry.flags.initial ? KRB5_KDB_DISALLOW_TGT_BASED : 0;
	out->attributes |= ent.entry.flags.renewable ? 0 : KRB5_KDB_DISALLOW_RENEWABLE;
	out->attributes |= ent.entry.flags.proxiable ? 0 : KRB5_KDB_DISALLOW_PROXIABLE;
	out->attributes |= ent.entry.flags.invalid ? KRB5_KDB_DISALLOW_ALL_TIX : 0;
	out->attributes |= ent.entry.flags.require_preauth ? KRB5_KDB_REQUIRES_PRE_AUTH : 0;
	out->attributes |= ent.entry.flags.server ? 0 : KRB5_KDB_DISALLOW_SVR;
	out->attributes |= ent.entry.flags.change_pw ? KRB5_KDB_PWCHANGE_SERVICE : 0;
	out->attributes |= ent.entry.flags.ok_as_delegate ? KRB5_KDB_OK_AS_DELEGATE : 0;
	out->attributes |= ent.entry.flags.trusted_for_delegation ? KRB5_KDB_TRUSTED_FOR_DELEGATION : 0;
	out->attributes |= ent.entry.flags.allow_kerberos4 ? KRB5_KDB_ALLOW_KERBEROS4 : 0;
	out->attributes |= ent.entry.flags.allow_digest ? KRB5_KDB_ALLOW_DIGEST : 0;
    }
    if(mask & KADM5_MAX_LIFE) {
	if(ent.entry.max_life)
	    out->max_life = *ent.entry.max_life;
	else
	    out->max_life = INT_MAX;
    }
    if(mask & KADM5_MOD_TIME) {
	if(ent.entry.modified_by)
	    out->mod_date = ent.entry.modified_by->time;
	else
	    out->mod_date = ent.entry.created_by.time;
    }
    if(mask & KADM5_MOD_NAME) {
	if(ent.entry.modified_by) {
	    if (ent.entry.modified_by->principal != NULL)
		ret = krb5_copy_principal(context->context,
					  ent.entry.modified_by->principal,
					  &out->mod_name);
	} else if(ent.entry.created_by.principal != NULL)
	    ret = krb5_copy_principal(context->context,
				      ent.entry.created_by.principal,
				      &out->mod_name);
	else
	    out->mod_name = NULL;
    }
    if(ret)
	goto out;

    if(mask & KADM5_KVNO)
	out->kvno = ent.entry.kvno;
    if(mask & KADM5_MKVNO) {
	size_t n;
	out->mkvno = 0; /* XXX */
	for(n = 0; n < ent.entry.keys.len; n++)
	    if(ent.entry.keys.val[n].mkvno) {
		out->mkvno = *ent.entry.keys.val[n].mkvno; /* XXX this isn't right */
		break;
	    }
    }
#if 0 /* XXX implement */
    if(mask & KADM5_AUX_ATTRIBUTES)
	;
    if(mask & KADM5_LAST_SUCCESS)
	;
    if(mask & KADM5_LAST_FAILED)
	;
    if(mask & KADM5_FAIL_AUTH_COUNT)
	;
#endif
    if(mask & KADM5_POLICY)
	out->policy = NULL;
    if(mask & KADM5_MAX_RLIFE) {
	if(ent.entry.max_renew)
	    out->max_renewable_life = *ent.entry.max_renew;
	else
	    out->max_renewable_life = INT_MAX;
    }
    if(mask & KADM5_KEY_DATA){
	size_t i;
	Key *key;
	krb5_key_data *kd;
	krb5_salt salt;
	krb5_data *sp;
	krb5_get_pw_salt(context->context, ent.entry.principal, &salt);
	out->key_data = malloc(ent.entry.keys.len * sizeof(*out->key_data));
	if (out->key_data == NULL && ent.entry.keys.len != 0) {
	    ret = ENOMEM;
	    goto out;
	}
	for(i = 0; i < ent.entry.keys.len; i++){
	    key = &ent.entry.keys.val[i];
	    kd = &out->key_data[i];
	    kd->key_data_ver = 2;
	    kd->key_data_kvno = ent.entry.kvno;
	    kd->key_data_type[0] = key->key.keytype;
	    if(key->salt)
		kd->key_data_type[1] = key->salt->type;
	    else
		kd->key_data_type[1] = KRB5_PADATA_PW_SALT;
	    /* setup key */
	    kd->key_data_length[0] = key->key.keyvalue.length;
	    kd->key_data_contents[0] = malloc(kd->key_data_length[0]);
	    if(kd->key_data_contents[0] == NULL && kd->key_data_length[0] != 0){
		ret = ENOMEM;
		break;
	    }
	    memcpy(kd->key_data_contents[0], key->key.keyvalue.data,
		   kd->key_data_length[0]);
	    /* setup salt */
	    if(key->salt)
		sp = &key->salt->salt;
	    else
		sp = &salt.saltvalue;
	    kd->key_data_length[1] = sp->length;
	    kd->key_data_contents[1] = malloc(kd->key_data_length[1]);
	    if(kd->key_data_length[1] != 0
	       && kd->key_data_contents[1] == NULL) {
		memset(kd->key_data_contents[0], 0, kd->key_data_length[0]);
		ret = ENOMEM;
		break;
	    }
	    memcpy(kd->key_data_contents[1], sp->data, kd->key_data_length[1]);
	    out->n_key_data = i + 1;
	}
	krb5_free_salt(context->context, salt);
    }
    if(ret){
	kadm5_free_principal_ent(context, out);
	goto out;
    }
    if(mask & KADM5_TL_DATA) {
	time_t last_pw_expire;
	const HDB_Ext_PKINIT_acl *acl;
	const HDB_Ext_Aliases *aliases;

	ret = hdb_entry_get_pw_change_time(&ent.entry, &last_pw_expire);
	if (ret == 0 && last_pw_expire) {
	    unsigned char buf[4];
	    _krb5_put_int(buf, last_pw_expire, sizeof(buf));
	    ret = add_tl_data(out, KRB5_TL_LAST_PWD_CHANGE, buf, sizeof(buf));
	}
	if(ret){
	    kadm5_free_principal_ent(context, out);
	    goto out;
	}
	/*
	 * If the client was allowed to get key data, let it have the
	 * password too.
	 */
	if(mask & KADM5_KEY_DATA) {
	    heim_utf8_string pw;

	    ret = hdb_entry_get_password(context->context,
					 context->db, &ent.entry, &pw);
	    if (ret == 0) {
		ret = add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1);
		free(pw);
	    }
	    krb5_clear_error_message(context->context);
	}

	ret = hdb_entry_get_pkinit_acl(&ent.entry, &acl);
	if (ret == 0 && acl) {
	    krb5_data buf;
	    size_t len;

	    ASN1_MALLOC_ENCODE(HDB_Ext_PKINIT_acl, buf.data, buf.length,
				acl, &len, ret);
	    if (ret) {
		kadm5_free_principal_ent(context, out);
		goto out;
	    }
	    if (len != buf.length)
		krb5_abortx(context->context,
			    "internal ASN.1 encoder error");
	    ret = add_tl_data(out, KRB5_TL_PKINIT_ACL, buf.data, buf.length);
	    free(buf.data);
	    if (ret) {
		kadm5_free_principal_ent(context, out);
		goto out;
	    }
	}
	if(ret){
	    kadm5_free_principal_ent(context, out);
	    goto out;
	}

	ret = hdb_entry_get_aliases(&ent.entry, &aliases);
	if (ret == 0 && aliases) {
	    krb5_data buf;
	    size_t len;

	    ASN1_MALLOC_ENCODE(HDB_Ext_Aliases, buf.data, buf.length,
			       aliases, &len, ret);
	    if (ret) {
		kadm5_free_principal_ent(context, out);
		goto out;
	    }
	    if (len != buf.length)
		krb5_abortx(context->context,
			    "internal ASN.1 encoder error");
	    ret = add_tl_data(out, KRB5_TL_ALIASES, buf.data, buf.length);
	    free(buf.data);
	    if (ret) {
		kadm5_free_principal_ent(context, out);
		goto out;
	    }
	}
	if(ret){
	    kadm5_free_principal_ent(context, out);
	    goto out;
	}

    }
out:
    hdb_free_entry(context->context, &ent);

    return _kadm5_error_code(ret);
}
Exemplo n.º 4
0
krb5_error_code
entry2mit_string_int(krb5_context context, krb5_storage *sp, hdb_entry *ent)
{
    krb5_error_code ret;
    ssize_t sz;
    size_t i, k;
    size_t num_tl_data = 0;
    size_t num_key_data = 0;
    char *p;
    HDB_Ext_KeySet *hist_keys = NULL;
    HDB_extension *extp;
    time_t last_pw_chg = 0;
    time_t exp = 0;
    time_t pwexp = 0;
    unsigned int max_life = 0;
    unsigned int max_renew = 0;

    if (ent->modified_by)
        num_tl_data++;

    ret = hdb_entry_get_pw_change_time(ent, &last_pw_chg);
    if (ret) return ret;
    if (last_pw_chg)
        num_tl_data++;

    extp = hdb_find_extension(ent, choice_HDB_extension_data_hist_keys);
    if (extp)
        hist_keys = &extp->data.u.hist_keys;

    for (i = 0; i < ent->keys.len;i++) {
        if (ent->keys.val[i].key.keytype == ETYPE_DES_CBC_MD4 ||
            ent->keys.val[i].key.keytype == ETYPE_DES_CBC_MD5)
            continue;
        num_key_data++;
    }
    if (hist_keys) {
        for (i = 0; i < hist_keys->len; i++) {
            /*
             * MIT uses the highest kvno as the current kvno instead of
             * tracking kvno separately, so we can't dump keysets with kvno
             * higher than the entry's kvno.
             */
            if (hist_keys->val[i].kvno >= ent->kvno)
                continue;
            for (k = 0; k < hist_keys->val[i].keys.len; k++) {
                if (ent->keys.val[k].key.keytype == ETYPE_DES_CBC_MD4 ||
                    ent->keys.val[k].key.keytype == ETYPE_DES_CBC_MD5)
                    continue;
                num_key_data++;
            }
        }
    }

    ret = krb5_unparse_name(context, ent->principal, &p);
    if (ret) return ret;
    sz = append_string(context, sp, "princ\t38\t%u\t%u\t%u\t0\t%s\t%d",
                       strlen(p), num_tl_data, num_key_data, p,
                       flags_to_attr(ent->flags));
    free(p);
    if (sz == -1) return ENOMEM;

    if (ent->max_life)
        max_life = *ent->max_life;
    if (ent->max_renew)
        max_renew = *ent->max_renew;
    if (ent->valid_end)
        exp = *ent->valid_end;
    if (ent->pw_end)
        pwexp = *ent->pw_end;

    sz = append_string(context, sp, "\t%u\t%u\t%u\t%u\t0\t0\t0",
                       max_life, max_renew, exp, pwexp);
    if (sz == -1) return ENOMEM;

    /* Dump TL data we know: last pw chg and modified_by */
#define mit_KRB5_TL_LAST_PWD_CHANGE     1
#define mit_KRB5_TL_MOD_PRINC           2
    if (last_pw_chg) {
        krb5_data d;
        time_t val;
        unsigned char *ptr;
        
        ptr = (unsigned char *)&last_pw_chg;
        val = ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24);
        d.data = &val;
        d.length = sizeof (last_pw_chg);
        sz = append_string(context, sp, "\t%u\t%u\t",
                           mit_KRB5_TL_LAST_PWD_CHANGE, d.length);
        if (sz == -1) return ENOMEM;
        sz = append_hex(context, sp, 1, 1, &d);
        if (sz == -1) return ENOMEM;
    }
    if (ent->modified_by) {
        krb5_data d;
        unsigned int val;
        size_t plen;
        unsigned char *ptr;
        char *modby_p;

        ptr = (unsigned char *)&ent->modified_by->time;
        val = ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24);
        d.data = &val;
        d.length = sizeof (ent->modified_by->time);
        ret = krb5_unparse_name(context, ent->modified_by->principal, &modby_p);
        if (ret) return ret;
        plen = strlen(modby_p);
        sz = append_string(context, sp, "\t%u\t%u\t",
                           mit_KRB5_TL_MOD_PRINC,
                           d.length + plen + 1 /* NULL counted */);
        if (sz == -1) return ENOMEM;
        sz = append_hex(context, sp, 1, 1, &d);
        if (sz == -1) {
            free(modby_p);
            return ENOMEM;
        }
        d.data = modby_p;
        d.length = plen + 1;
        sz = append_hex(context, sp, 1, 1, &d);
        free(modby_p);
        if (sz == -1) return ENOMEM;
    }
    /*
     * Dump keys (remembering to not include any with kvno higher than
     * the entry's because MIT doesn't track entry kvno separately from
     * the entry's keys -- max kvno is it)
     */
    for (i = 0; i < ent->keys.len; i++) {
        if (ent->keys.val[i].key.keytype == ETYPE_DES_CBC_MD4 ||
            ent->keys.val[i].key.keytype == ETYPE_DES_CBC_MD5)
            continue;
        sz = append_mit_key(context, sp, ent->principal, ent->kvno,
                            &ent->keys.val[i]);
        if (sz == -1) return ENOMEM;
    }
    for (i = 0; hist_keys && i < ent->kvno; i++) {
        size_t m;

        /* dump historical keys */
        for (k = 0; k < hist_keys->len; k++) {
            if (hist_keys->val[k].kvno != ent->kvno - i)
                continue;
            for (m = 0; m < hist_keys->val[k].keys.len; m++) {
                if (ent->keys.val[k].key.keytype == ETYPE_DES_CBC_MD4 ||
                    ent->keys.val[k].key.keytype == ETYPE_DES_CBC_MD5)
                    continue;
                sz = append_mit_key(context, sp, ent->principal,
                                    hist_keys->val[k].kvno,
                                    &hist_keys->val[k].keys.val[m]);
                if (sz == -1) return ENOMEM;
            }
        }
    }
    sz = append_string(context, sp, "\t-1;"); /* "extra data" */
    if (sz == -1) return ENOMEM;
    return 0;
}