src/acl/HttpHeaderData.cc

   1 /*
   2  * $Id$
   3  *
   4  * DEBUG: section 28    Access Control
   5  * AUTHOR: Duane Wessels
   6  *
   7  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   8  * ----------------------------------------------------------
   9  *
  10  *  Squid is the result of efforts by numerous individuals from
  11  *  the Internet community; see the CONTRIBUTORS file for full
  12  *  details.   Many organizations have provided support for Squid's
  13  *  development; see the SPONSORS file for full details.  Squid is
  14  *  Copyrighted (C) 2001 by the Regents of the University of
  15  *  California; see the COPYRIGHT file for full details.  Squid
  16  *  incorporates software developed and/or copyrighted by other
  17  *  sources; see the CREDITS file for full details.
  18  *
  19  *  This program is free software; you can redistribute it and/or modify
  20  *  it under the terms of the GNU General Public License as published by
  21  *  the Free Software Foundation; either version 2 of the License, or
  22  *  (at your option) any later version.
  23  *
  24  *  This program is distributed in the hope that it will be useful,
  25  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27  *  GNU General Public License for more details.
  28  *
  29  *  You should have received a copy of the GNU General Public License
  30  *  along with this program; if not, write to the Free Software
  31  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  32  *
  33  *
  34  * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org>
  35  */
  36
  37 #include "squid-old.h"
  38 #include "acl/HttpHeaderData.h"
  39 #include "acl/Checklist.h"
  40 #include "acl/Acl.h"
  41 #include "acl/RegexData.h"
  42 #include "wordlist.h"
  43 #include "ConfigParser.h"
  44
  45 /* Construct an ACLHTTPHeaderData that uses an ACLRegex rule with the value of the
  46  * selected header from a given request.
  47  *
  48  * TODO: This can be generalised by making the type of the regex_rule into a
  49  * template parameter - so that we can use different rules types in future.
  50  */
  51 ACLHTTPHeaderData::ACLHTTPHeaderData() : hdrId(HDR_BAD_HDR), regex_rule(new ACLRegexData)
  52 {}
  53
  54 ACLHTTPHeaderData::~ACLHTTPHeaderData()
  55 {
  56     delete regex_rule;
  57 }
  58
  59 bool
  60 ACLHTTPHeaderData::match(HttpHeader* hdr)
  61 {
  62     if (hdr == NULL)
  63         return false;
  64
  65     debugs(28, 3, "aclHeaderData::match: checking '" << hdrName << "'");
  66
  67     String value = hdrId != HDR_BAD_HDR ? hdr->getStrOrList(hdrId) : hdr->getByName(hdrName.termedBuf());
  68
  69     return regex_rule->match(value.termedBuf());
  70 }
  71
  72 wordlist *
  73 ACLHTTPHeaderData::dump()
  74 {
  75     wordlist *W = NULL;
  76     wordlistAdd(&W, hdrName.termedBuf());
  77     wordlist * regex_dump = regex_rule->dump();
  78     wordlistAddWl(&W, regex_dump);
  79     wordlistDestroy(&regex_dump);
  80     return W;
  81 }
  82
  83 void
  84 ACLHTTPHeaderData::parse()
  85 {
  86     char* t = strtokFile();
  87     assert (t != NULL);
  88     hdrName = t;
  89     hdrId = httpHeaderIdByNameDef(hdrName.rawBuf(), hdrName.size());
  90     regex_rule->parse();
  91 }
  92
  93 bool
  94 ACLHTTPHeaderData::empty() const
  95 {
  96     return (hdrId == HDR_BAD_HDR && hdrName.undefined()) || regex_rule->empty();
  97 }
  98
  99 ACLData<HttpHeader*> *
 100 ACLHTTPHeaderData::clone() const
 101 {
 102     /* Header's don't clone yet. */
 103     ACLHTTPHeaderData * result = new ACLHTTPHeaderData;
 104     result->regex_rule = regex_rule->clone();
 105     result->hdrId = hdrId;
 106     result->hdrName = hdrName;
 107     return result;
 108 }