src/acl/IntRange.cc

   1 /*
   2  * $Id$
   3  *
   4  * DEBUG: section 28    Access Control
   5  * AUTHOR: Robert Collins
   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.h"
  38 #include "acl/IntRange.h"
  39 #include "cache_cf.h"
  40 #include "Debug.h"
  41 #include "wordlist.h"
  42 #include "Parsing.h"
  43 #include "protos.h"
  44
  45 /* explicit instantiation required for some systems */
  46 /** \cond AUTODOCS-IGNORE */
  47 template cbdata_type CbDataList< Range<int> >::CBDATA_CbDataList;
  48 /** \endcond */
  49
  50 void
  51 ACLIntRange::parse()
  52 {
  53     char *a;
  54
  55     while ((a = strtokFile())) {
  56         char *b = strchr(a, '-');
  57         unsigned short port1, port2;
  58
  59         if (b) {
  60             *b = '\0';
  61             ++b;
  62         }
  63
  64         port1 = xatos(a);
  65
  66         if (b)
  67             port2 = xatos(b);
  68         else
  69             port2 = port1;
  70
  71         if (port2 >= port1) {
  72             RangeType temp (0,0);
  73             temp.start = port1;
  74             temp.end = port2+1;
  75             ranges.push_back(temp);
  76         } else {
  77             debugs(28, DBG_CRITICAL, "ACLIntRange::parse: Invalid port value");
  78             self_destruct();
  79         }
  80     }
  81 }
  82
  83 bool
  84 ACLIntRange::empty() const
  85 {
  86     return ranges.empty();
  87 }
  88
  89 bool
  90 ACLIntRange::match(int i)
  91 {
  92     RangeType const toFind (i, i+1);
  93     CbDataListIterator<RangeType> iter(ranges);
  94
  95     while (!iter.end()) {
  96         const RangeType & element = iter.next();
  97         RangeType result = element.intersection (toFind);
  98
  99         if (result.size())
 100             return true;
 101     }
 102
 103     return false;
 104 }
 105
 106 ACLData<int> *
 107 ACLIntRange::clone() const
 108 {
 109     if (!ranges.empty())
 110         fatal("ACLIntRange::clone: attempt to clone used ACL");
 111
 112     return new ACLIntRange (*this);
 113 }
 114
 115 ACLIntRange::~ACLIntRange ()
 116 {}
 117
 118 wordlist *
 119 ACLIntRange::dump ()
 120 {
 121     wordlist *W = NULL;
 122     char buf[32];
 123     CbDataListIterator<RangeType> iter(ranges);
 124
 125     while (!iter.end()) {
 126         const RangeType & element = iter.next();
 127
 128         if (element.size() == 1)
 129             snprintf(buf, sizeof(buf), "%d", element.start);
 130         else
 131             snprintf(buf, sizeof(buf), "%d-%d", element.start, element.end-1);
 132
 133         wordlistAdd(&W, buf);
 134     }
 135
 136     return W;
 137 }
 138