mirror of
https://github.com/processone/ejabberd.git
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LDAP extensible match support (EJAB-722)
This commit is contained in:
Evgeniy Khramtsov
parent
f70ebd6983
commit
5bb22101e2
@ -1,4 +1,4 @@
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# $Id$
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# $Id: Makefile.in 2842 2009-12-29 19:10:52Z badlop $
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CC = @CC@
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CFLAGS = @CFLAGS@
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@ -20,18 +20,23 @@ ifdef debug
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endif
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OUTDIR = ..
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SOURCES = $(wildcard *.erl) ELDAPv3.erl
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SOURCES = $(wildcard *.erl) ELDAPv3.erl eldap_filter_yecc.erl
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BEAMS = $(addprefix $(OUTDIR)/,$(SOURCES:.erl=.beam))
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all: $(BEAMS) ELDAPv3.beam
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all: $(BEAMS) ELDAPv3.beam eldap_filter_yecc.beam
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ELDAPv3.beam: ELDAPv3.erl
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ELDAPv3.erl: ELDAPv3.asn
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@ERLC@ $(ASN_FLAGS) -W $(EFLAGS) $<
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$(OUTDIR)/%.beam: %.erl ELDAPv3.erl
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eldap_filter_yecc.beam: eldap_filter_yecc.erl
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eldap_filter_yecc.erl: eldap_filter_yecc.yrl
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@ERLC@ -W $<
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$(OUTDIR)/%.beam: %.erl ELDAPv3.erl eldap_filter_yecc.erl
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@ERLC@ -W $(EFLAGS) -o $(OUTDIR) $<
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clean:
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@ -39,6 +44,8 @@ clean:
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rm -f ELDAPv3.erl
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rm -f ELDAPv3.hrl
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rm -f ELDAPv3.beam
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rm -f eldap_filter_yecc.erl
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rm -f eldap_filter_yecc.beam
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rm -f $(BEAMS)
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distclean: clean
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@ -47,7 +54,6 @@ distclean: clean
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TAGS:
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etags *.erl
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# Don't include ELDAPv3.erl in sources for Devdoc
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SOURCES = eldap.erl eldap_filter.erl eldap.hrl eldap_pool.erl eldap_utils.erl
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@ -4,7 +4,7 @@ include ..\Makefile.inc
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EFLAGS = -I .. -pz ..
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OUTDIR = ..
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BEAMS = ..\eldap.beam ..\eldap_filter.beam ..\eldap_pool.beam ..\eldap_utils.beam
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BEAMS = ..\eldap.beam ..\eldap_filter.beam ..\eldap_pool.beam ..\eldap_utils.beam ..\eldap_filter_yecc.beam
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ASN_FLAGS = -bber_bin +optimize +driver
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@ -15,11 +15,16 @@ Clean :
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-@erase ELDAPv3.erl
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-@erase ELDAPv3.hrl
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-@erase ELDAPv3.beam
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-@erase eldap_filter_yecc.erl
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-@erase eldap_filter_yecc.beam
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-@erase $(BEAMS)
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ELDAPv3.erl : ELDAPv3.asn
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erlc $(ASN_FLAGS) -W $(EFLAGS) ELDAPv3.asn
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eldap_filter_yecc.erl: eldap_filter_yecc.yrl
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erlc -W eldap_filter_yecc.yrl
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$(OUTDIR)\eldap.beam : eldap.erl ELDAPv3.erl
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erlc -W $(EFLAGS) -o $(OUTDIR) eldap.erl
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@ -34,3 +39,6 @@ $(OUTDIR)\eldap_utils.beam : eldap_utils.erl
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$(OUTDIR)\eldap_pool.beam : eldap_pool.erl
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erlc -W $(EFLAGS) -o $(OUTDIR) eldap_pool.erl
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$(OUTDIR)\eldap_filter_yecc.beam : eldap_filter_yecc.erl
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erlc -W $(EFLAGS) -o $(OUTDIR) eldap_filter_yecc.erl
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@ -35,6 +35,7 @@
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%%% Modified by Evgeniy Khramtsov <xram@jabber.ru>
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%%% Implemented queue for bind() requests to prevent pending binds.
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%%% Implemented extensibleMatch/2 function.
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%%% Modified by Christophe Romain <christophe.romain@process-one.net>
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%%% Improve error case handling
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@ -71,7 +72,7 @@
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-export([baseObject/0,singleLevel/0,wholeSubtree/0,close/1,
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equalityMatch/2,greaterOrEqual/2,lessOrEqual/2,
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approxMatch/2,search/2,substrings/2,present/1,
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approxMatch/2,search/2,substrings/2,present/1,extensibleMatch/2,
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'and'/1,'or'/1,'not'/1,modify/3, mod_add/2, mod_delete/2,
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mod_replace/2, add/3, delete/2, modify_dn/5, bind/3]).
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-export([get_status/1]).
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@ -374,6 +375,29 @@ substrings(Type, SubStr) when is_list(Type), is_list(SubStr) ->
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{substrings,#'SubstringFilter'{type = Type,
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substrings = Ss}}.
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%%%
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%%% extensibleMatch filter.
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%%% FIXME: Describe the purpose of this filter.
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%%%
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%%% Value ::= string( <attribute> )
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%%% Opts ::= listof( {matchingRule, Str} | {type, Str} | {dnAttributes, true} )
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%%%
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%%% Example: extensibleMatch("Fred", [{matchingRule, "1.2.3.4.5"}, {type, "cn"}]).
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%%%
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extensibleMatch(Value, Opts) when is_list(Value), is_list(Opts) ->
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MRA = #'MatchingRuleAssertion'{matchValue=Value},
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{extensibleMatch, extensibleMatch_opts(Opts, MRA)}.
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extensibleMatch_opts([{matchingRule, Rule} | Opts], MRA) when is_list(Rule) ->
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extensibleMatch_opts(Opts, MRA#'MatchingRuleAssertion'{matchingRule=Rule});
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extensibleMatch_opts([{type, Desc} | Opts], MRA) when is_list(Desc) ->
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extensibleMatch_opts(Opts, MRA#'MatchingRuleAssertion'{type=Desc});
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extensibleMatch_opts([{dnAttributes, true} | Opts], MRA) ->
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extensibleMatch_opts(Opts, MRA#'MatchingRuleAssertion'{dnAttributes=true});
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extensibleMatch_opts([_ | Opts], MRA) ->
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extensibleMatch_opts(Opts, MRA);
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extensibleMatch_opts([], MRA) ->
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MRA.
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get_handle(Pid) when is_pid(Pid) -> Pid;
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get_handle(Atom) when is_atom(Atom) -> Atom;
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@ -973,6 +997,8 @@ v_filter({lessOrEqual,AV}) -> {lessOrEqual,AV};
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v_filter({approxMatch,AV}) -> {approxMatch,AV};
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v_filter({present,A}) -> {present,A};
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v_filter({substrings,S}) when is_record(S,'SubstringFilter') -> {substrings,S};
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v_filter({extensibleMatch, S}) when is_record(S, 'MatchingRuleAssertion') ->
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{extensibleMatch, S};
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v_filter(_Filter) -> throw({error,concat(["unknown filter: ",_Filter])}).
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v_modifications(Mods) ->
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@ -3,7 +3,7 @@
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%%% Purpose: Converts String Representation of
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%%% LDAP Search Filter (RFC 2254)
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%%% to eldap's representation of filter
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%%% Author: Evgeniy Khramtsov <xramtsov@gmail.com>
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%%% Author: Evgeniy Khramtsov <ekhramtsov@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2010 ProcessOne
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@ -24,19 +24,14 @@
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%%% 02111-1307 USA
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%%%
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%%%----------------------------------------------------------------------
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-module(eldap_filter).
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%%%======================
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%%% Export functions
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%%%======================
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-export([parse/1, parse/2, do_sub/2]).
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-export([parse/1,
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parse/2,
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do_sub/2
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]).
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%%%-------------------------------------------------------------------------
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%%====================================================================
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%% API
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%%====================================================================
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%%%-------------------------------------------------------------------
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%%% Arity: parse/1
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%%% Function: parse(RFC2254_Filter) -> {ok, EldapFilter} |
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%%% {error, bad_filter}
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@ -47,15 +42,15 @@
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%%% to eldap's representation of filter.
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%%%
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%%% Example:
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%%% > eldap_filter:parse("(&(!(uid<=100))(mail=*))").
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%%% > eldap_filter:parse("(&(!(uid<=100))(mail=*))").
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%%%
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%%% {ok,{'and',[{'not',{lessOrEqual,{'AttributeValueAssertion',"uid","100"}}},
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%%% {present,"mail"}]}}
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%%%-------------------------------------------------------------------------
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parse(RFC2254_Filter) ->
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parse(RFC2254_Filter, []).
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%%% {ok,{'and',[{'not',{lessOrEqual,{'AttributeValueAssertion',"uid","100"}}},
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%%% {present,"mail"}]}}
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%%%-------------------------------------------------------------------
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parse(L) when is_list(L) ->
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parse(L, []).
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%%%-------------------------------------------------------------------------
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%%%-------------------------------------------------------------------
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%%% Arity: parse/2
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%%% Function: parse(RFC2254_Filter, [SubstValue |...]) ->
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%%% {ok, EldapFilter} |
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@ -81,135 +76,53 @@ parse(RFC2254_Filter) ->
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%%% {equalityMatch,{'AttributeValueAssertion',
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%%% "jid",
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%%% "xramtsov@gmail.com"}}]}}
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%%%--------------------------------------------------------------------------
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parse(RFC2254_Filter, ListOfSubValues) ->
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case catch convert_filter(parse_filter(RFC2254_Filter), ListOfSubValues) of
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[EldapFilter] when is_tuple(EldapFilter) ->
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{ok, EldapFilter};
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{regexp, Error} ->
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{error, Error};
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_ ->
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{error, bad_filter}
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%%%-------------------------------------------------------------------
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parse(L, SList) when is_list(L), is_list(SList) ->
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case catch eldap_filter_yecc:parse(scan(L, SList)) of
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{error, {_, _, Msg}} ->
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{error, Msg};
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{ok, Result} ->
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{ok, Result};
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{regexp, Err} ->
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{error, Err}
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end.
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%%%==========================
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%%% Internal functions
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%%%==========================
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%%====================================================================
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%% Internal functions
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%%====================================================================
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-define(do_scan(L), scan(Rest, [], [{L, 1} | check(Buf, S) ++ Result], L, S)).
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%%%----------------------
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%%% split/1,4
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%%%----------------------
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split(Filter) ->
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split(Filter, 0, [], []).
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scan(L, SList) ->
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scan(L, "", [], undefined, SList).
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split([], _, _, Result) ->
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Result;
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scan("=*)" ++ Rest, Buf, Result, '(', S) ->
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scan(Rest, [], [{')', 1}, {'=*', 1} | check(Buf, S) ++ Result], ')', S);
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scan(":dn" ++ Rest, Buf, Result, '(', S) -> ?do_scan(':dn');
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scan(":=" ++ Rest, Buf, Result, '(', S) -> ?do_scan(':=');
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scan(":=" ++ Rest, Buf, Result, ':dn', S) -> ?do_scan(':=');
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scan(":=" ++ Rest, Buf, Result, ':', S) -> ?do_scan(':=');
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scan("~=" ++ Rest, Buf, Result, '(', S) -> ?do_scan('~=');
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scan(">=" ++ Rest, Buf, Result, '(', S) -> ?do_scan('>=');
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scan("<=" ++ Rest, Buf, Result, '(', S) -> ?do_scan('<=');
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scan("=" ++ Rest, Buf, Result, '(', S) -> ?do_scan('=');
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scan(":" ++ Rest, Buf, Result, '(', S) -> ?do_scan(':');
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scan(":" ++ Rest, Buf, Result, ':dn', S) -> ?do_scan(':');
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scan("&" ++ Rest, Buf, Result, '(', S) when Buf=="" -> ?do_scan('&');
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scan("|" ++ Rest, Buf, Result, '(', S) when Buf=="" -> ?do_scan('|');
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scan("!" ++ Rest, Buf, Result, '(', S) when Buf=="" -> ?do_scan('!');
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scan("*" ++ Rest, Buf, Result, '*', S) -> ?do_scan('*');
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scan("*" ++ Rest, Buf, Result, '=', S) -> ?do_scan('*');
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scan("(" ++ Rest, Buf, Result, _, S) -> ?do_scan('(');
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scan(")" ++ Rest, Buf, Result, _, S) -> ?do_scan(')');
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scan([Letter | Rest], Buf, Result, PreviosAtom, S) ->
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scan(Rest, [Letter|Buf], Result, PreviosAtom, S);
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scan([], Buf, Result, _, S) ->
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lists:reverse(check(Buf, S) ++ Result).
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split([H|T], Num, Rest, Result) ->
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NewNum = case H of
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$( -> Num + 1;
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$) -> Num - 1;
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_ -> Num
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end,
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if
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NewNum == 0 ->
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X = Rest++[H],
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LenX = length(X),
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if
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LenX > 2 ->
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split(T, 0, [], Result ++ [lists:sublist(X, 2, LenX-2)]);
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true ->
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split(T, 0, Rest, Result)
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end;
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true ->
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split(T, NewNum, Rest++[H], Result)
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end.
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%%%-----------------------
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%%% parse_filter/1
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%%%-----------------------
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parse_filter(Filter) ->
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case Filter of
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[$! | T] ->
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{'not', parse_filter(T)};
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[$| | T] ->
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{'or', parse_filter(T)};
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[$& | T] ->
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{'and', parse_filter(T)};
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[$( | _] ->
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parse_filter(split(Filter));
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[List | _] when is_list(List) ->
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[parse_filter(X) || X <- Filter];
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_ ->
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Filter
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end.
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%%%--------------------
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%%% convert_filter/2
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%%%--------------------
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convert_filter({'not', [Val | _]}, Replace) ->
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eldap:'not'(convert_filter(Val, Replace));
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convert_filter({'or', Vals}, Replace) ->
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eldap:'or'([convert_filter(X, Replace) || X <- Vals]);
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convert_filter({'and', Vals}, Replace) ->
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eldap:'and'([convert_filter(X, Replace) || X <- Vals]);
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convert_filter([H|_] = Filter, Replace) when is_integer(H) ->
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parse_attr(Filter, Replace);
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convert_filter(Filter, Replace) when is_list(Filter) ->
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[convert_filter(X, Replace) || X <- Filter].
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%%%-----------------
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%%% parse_attr/2,3
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%%%-----------------
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parse_attr(Attr, ListOfSubValues) ->
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{Action, [_|_] = Name, [_|_] = Value} = split_attribute(Attr),
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parse_attr(Action, {Name, Value}, ListOfSubValues).
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parse_attr(approx, {Name, Value}, ListOfSubValues) ->
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NewValue = do_sub(Value, ListOfSubValues),
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eldap:approxMatch(Name, NewValue);
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parse_attr(greater, {Name, Value}, ListOfSubValues) ->
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NewValue = do_sub(Value, ListOfSubValues),
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eldap:greaterOrEqual(Name, NewValue);
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parse_attr(less, {Name, Value}, ListOfSubValues) ->
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NewValue = do_sub(Value, ListOfSubValues),
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eldap:lessOrEqual(Name, NewValue);
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parse_attr(equal, {Name, Value}, ListOfSubValues) ->
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RegSList = re:split(remove_extra_asterisks(Value), "[*]", [{return, list}]),
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Pattern = case [do_sub(X, ListOfSubValues) || X <- RegSList] of
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[Head | Tail] when Tail /= [] ->
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{Head, lists:sublist(Tail, length(Tail)-1), lists:last(Tail)};
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R ->
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R
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end,
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case Pattern of
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[V] ->
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eldap:equalityMatch(Name, V);
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{[], [], []} ->
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eldap:present(Name);
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{"", Any, ""} ->
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eldap:substrings(Name, [{any, X} || X<-Any]);
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{H, Any, ""} ->
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eldap:substrings(Name, [{initial, H}]++[{any, X} || X<-Any]);
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{"", Any, T} ->
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eldap:substrings(Name, [{any, X} || X<-Any]++[{final, T}]);
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{H, Any, T} ->
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eldap:substrings(Name, [{initial, H}]++[{any, X} || X<-Any]++[{final, T}])
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end;
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parse_attr(_, _, _) ->
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false.
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%%%--------------------
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%%% do_sub/2,3
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%%%--------------------
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check([], _) ->
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[];
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check(Buf, S) ->
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[{str, 1, do_sub(lists:reverse(Buf), S)}].
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-define(MAX_RECURSION, 100).
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@ -256,49 +169,8 @@ do_sub(S, {RegExp, New, Times}, Iter) ->
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throw({regexp, bad_regexp})
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end.
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remove_extra_asterisks(String) ->
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{Res, _} = lists:foldl(
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fun(X, {Acc, Last}) ->
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case X of
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$* when Last==$* ->
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{Acc, X};
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_ ->
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{Acc ++ [X], X}
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end
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end,
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{"", ""}, String),
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Res.
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replace_amps(String) ->
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lists:foldl(
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fun(X, Acc) ->
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if
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X == $& ->
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Acc ++ "\\&";
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true ->
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Acc ++ [X]
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end
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end,
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"", String).
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split_attribute(String) ->
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split_attribute(String, "", $0).
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split_attribute([], _, _) ->
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{error, "", ""};
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split_attribute([H|Tail], Acc, Last) ->
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case H of
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$= when Last==$> ->
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{greater, lists:sublist(Acc, 1, length(Acc)-1), Tail};
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$= when Last==$< ->
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{less, lists:sublist(Acc, 1, length(Acc)-1), Tail};
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$= when Last==$~ ->
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{approx, lists:sublist(Acc, 1, length(Acc)-1), Tail};
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$= when Last==$: ->
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{equal, lists:sublist(Acc, 1, length(Acc)-1), Tail};
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$= ->
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{equal, Acc, Tail};
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_ ->
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split_attribute(Tail, Acc++[H], H)
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end.
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lists:map(
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fun($&) -> "\\&";
|
||||
(Chr) -> Chr
|
||||
end, String).
|
||||
|
||||
71
src/eldap/eldap_filter_yecc.yrl
Normal file
71
src/eldap/eldap_filter_yecc.yrl
Normal file
@ -0,0 +1,71 @@
|
||||
Nonterminals
|
||||
filter filtercomp filterlist item
|
||||
simple present substring extensible
|
||||
initial any final matchingrule xattr
|
||||
attr value.
|
||||
|
||||
Terminals str
|
||||
'(' ')' '&' '|' '!' '=' '~=' '>=' '<=' '=*' '*' ':dn' ':' ':='.
|
||||
|
||||
Rootsymbol filter.
|
||||
|
||||
filter -> '(' filtercomp ')': '$2'.
|
||||
filtercomp -> '&' filterlist: 'and'('$2').
|
||||
filtercomp -> '|' filterlist: 'or'('$2').
|
||||
filtercomp -> '!' filter: 'not'('$2').
|
||||
filtercomp -> item: '$1'.
|
||||
filterlist -> filter: '$1'.
|
||||
filterlist -> filter filterlist: flatten(['$1', '$2']).
|
||||
|
||||
item -> simple: '$1'.
|
||||
item -> present: '$1'.
|
||||
item -> substring: '$1'.
|
||||
item -> extensible: '$1'.
|
||||
|
||||
simple -> attr '=' value: equal('$1', '$3').
|
||||
simple -> attr '~=' value: approx('$1', '$3').
|
||||
simple -> attr '>=' value: greater('$1', '$3').
|
||||
simple -> attr '<=' value: less('$1', '$3').
|
||||
|
||||
present -> attr '=*': present('$1').
|
||||
|
||||
substring -> attr '=' initial '*' any: substrings('$1', ['$3', '$5']).
|
||||
substring -> attr '=' '*' any final: substrings('$1', ['$4', '$5']).
|
||||
substring -> attr '=' initial '*' any final: substrings('$1', ['$3', '$5', '$6']).
|
||||
substring -> attr '=' '*' any: substrings('$1', ['$4']).
|
||||
any -> any value '*': 'any'('$1', '$2').
|
||||
any -> '$empty': [].
|
||||
initial -> value: initial('$1').
|
||||
final -> value: final('$1').
|
||||
|
||||
extensible -> xattr ':dn' ':' matchingrule ':=' value: extensible('$6', ['$1', '$4']).
|
||||
extensible -> xattr ':' matchingrule ':=' value: extensible('$5', ['$1', '$3']).
|
||||
extensible -> xattr ':dn' ':=' value: extensible('$4', ['$1']).
|
||||
extensible -> xattr ':=' value: extensible('$3', ['$1']).
|
||||
extensible -> ':dn' ':' matchingrule ':=' value: extensible('$5', ['$3']).
|
||||
extensible -> ':' matchingrule ':=' value: extensible('$4', ['$2']).
|
||||
xattr -> value: xattr('$1').
|
||||
matchingrule -> value: matchingrule('$1').
|
||||
|
||||
attr -> str: value_of('$1').
|
||||
value -> str: value_of('$1').
|
||||
|
||||
Erlang code.
|
||||
|
||||
'and'(Value) -> eldap:'and'(Value).
|
||||
'or'(Value) -> eldap:'or'(Value).
|
||||
'not'(Value) -> eldap:'not'(Value).
|
||||
equal(Desc, Value) -> eldap:equalityMatch(Desc, Value).
|
||||
approx(Desc, Value) -> eldap:approxMatch(Desc, Value).
|
||||
greater(Desc, Value) -> eldap:greaterOrEqual(Desc, Value).
|
||||
less(Desc, Value) -> eldap:lessOrEqual(Desc, Value).
|
||||
present(Value) -> eldap:present(Value).
|
||||
extensible(Value, Opts) -> eldap:extensibleMatch(Value, Opts).
|
||||
substrings(Desc, ValueList) -> eldap:substrings(Desc, flatten(ValueList)).
|
||||
initial(Value) -> {initial, Value}.
|
||||
final(Value) -> {final, Value}.
|
||||
'any'(Token, Value) -> [Token, {any, Value}].
|
||||
xattr(Value) -> {type, Value}.
|
||||
matchingrule(Value) -> {matchingRule, Value}.
|
||||
value_of(Token) -> element(3, Token).
|
||||
flatten(List) -> lists:flatten(List).
|
||||
Loading…
Reference in New Issue
Block a user