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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
interface nsILDAPBERValue;
/**
* nsILDAPBERElement is a wrapper interface for a C-SDK BerElement object.
* Typically, this is used as an intermediate object to aid in the manual
* construction of a BER value. Once the construction is completed by calling
* methods on this object, an nsILDAPBERValue can be retrieved from the
* asValue attribute on this interface.
*
* <http://www.mozilla.org/directory/ietf-docs/draft-ietf-ldapext-ldap-c-api-05.txt>
* contains some documentation that mostly (but not exactly) matches
* the code that this wraps in section 17.
*/
[scriptable, uuid(409f5b31-c062-4d11-a35b-0a09e7967bf2)]
interface nsILDAPBERElement : nsISupports
{
/**
* Initialize this object. Must be called before calling any other method
* on this interface.
*
* @param aValue value to preinitialize with; 0 for a new empty object
*
* @exception NS_ERROR_NOT_IMPLEMENTED preinitialization is currently
* not implemented
* @exception NS_ERROR_OUT_OF_MEMORY unable to allocate the internal
* BerElement
*/
void init(in nsILDAPBERValue aValue);
/**
* Most TAG_* constants can be used in the construction or passing in of
* values to the aTag arguments to most of the methods in this interface.
*/
/**
* When returned from a parsing method, 0xffffffff is referred to
* has the parse-error semantic (ie TAG_LBER_ERROR); when passing it to
* a construction method, it is used to mean "pick the default tag for
* this type" (ie TAG_LBER_DEFAULT).
*/
const unsigned long TAG_LBER_ERROR = 0xffffffff;
const unsigned long TAG_LBER_DEFAULT = 0xffffffff;
const unsigned long TAG_LBER_END_OF_SEQORSET = 0xfffffffe;
/**
* BER encoding types and masks
*/
const unsigned long TAG_LBER_PRIMITIVE = 0x00;
/**
* The following two tags are carried over from the LDAP C SDK; their
* exact purpose there is not well documented. They both have
* the same value there as well.
*/
const unsigned long TAG_LBER_CONSTRUCTED = 0x20;
const unsigned long TAG_LBER_ENCODING_MASK = 0x20;
const unsigned long TAG_LBER_BIG_TAG_MASK = 0x1f;
const unsigned long TAG_LBER_MORE_TAG_MASK = 0x80;
/**
* general BER types we know about
*/
const unsigned long TAG_LBER_BOOLEAN = 0x01;
const unsigned long TAG_LBER_INTEGER = 0x02;
const unsigned long TAG_LBER_BITSTRING = 0x03;
const unsigned long TAG_LBER_OCTETSTRING = 0x04;
const unsigned long TAG_LBER_NULL = 0x05;
const unsigned long TAG_LBER_ENUMERATED = 0x0a;
const unsigned long TAG_LBER_SEQUENCE = 0x30;
const unsigned long TAG_LBER_SET = 0x31;
/**
* Write a string to this element.
*
* @param aString string to write
* @param aTag tag for this string (if TAG_LBER_DEFAULT is used,
* TAG_LBER_OCTETSTRING will be written).
*
* @return number of bytes written
*
* @exception NS_ERROR_FAILUE C-SDK returned error
*/
unsigned long putString(in AUTF8String aString, in unsigned long aTag);
/**
* Start a set. Sets may be nested.
*
* @param aTag tag for this set (if TAG_LBER_DEFAULT is used,
* TAG_LBER_SET will be written).
*
* @exception NS_ERROR_FAILUE C-SDK returned an error
*/
void startSet(in unsigned long aTag);
/**
* Cause the entire set started by the last startSet() call to be written.
*
* @exception NS_ERROR_FAILUE C-SDK returned an error
*
* @return number of bytes written
*/
unsigned long putSet();
/**
* an nsILDAPBERValue version of this element. Calls ber_flatten() under
* the hood.
*
* @exception NS_ERROR_OUT_OF_MEMORY
*/
readonly attribute nsILDAPBERValue asValue;
};
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