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