src/acl/IntRange.cc

   1 /*
   2  * DEBUG: section 28    Access Control
   3  * AUTHOR: Robert Collins
   4  *
   5  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   6  * ----------------------------------------------------------
   7  *
   8  *  Squid is the result of efforts by numerous individuals from
   9  *  the Internet community; see the CONTRIBUTORS file for full
  10  *  details.   Many organizations have provided support for Squid's
  11  *  development; see the SPONSORS file for full details.  Squid is
  12  *  Copyrighted (C) 2001 by the Regents of the University of
  13  *  California; see the COPYRIGHT file for full details.  Squid
  14  *  incorporates software developed and/or copyrighted by other
  15  *  sources; see the CREDITS file for full details.
  16  *
  17  *  This program is free software; you can redistribute it and/or modify
  18  *  it under the terms of the GNU General Public License as published by
  19  *  the Free Software Foundation; either version 2 of the License, or
  20  *  (at your option) any later version.
  21  *
  22  *  This program is distributed in the hope that it will be useful,
  23  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  *  GNU General Public License for more details.
  26  *
  27  *  You should have received a copy of the GNU General Public License
  28  *  along with this program; if not, write to the Free Software
  29  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  30  *
  31  *
  32  * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org>
  33  */
  34
  35 #include "squid.h"
  36 #include "acl/IntRange.h"
  37 #include "cache_cf.h"
  38 #include "Debug.h"
  39 #include "Parsing.h"
  40 #include "wordlist.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             ++b;
  59         }
  60
  61         port1 = xatos(a);
  62
  63         if (b)
  64             port2 = xatos(b);
  65         else
  66             port2 = port1;
  67
  68         if (port2 >= port1) {
  69             RangeType temp (0,0);
  70             temp.start = port1;
  71             temp.end = port2+1;
  72             ranges.push_back(temp);
  73         } else {
  74             debugs(28, DBG_CRITICAL, "ACLIntRange::parse: Invalid port value");
  75             self_destruct();
  76         }
  77     }
  78 }
  79
  80 bool
  81 ACLIntRange::empty() const
  82 {
  83     return ranges.empty();
  84 }
  85
  86 bool
  87 ACLIntRange::match(int i)
  88 {
  89     RangeType const toFind (i, i+1);
  90     CbDataListIterator<RangeType> iter(ranges);
  91
  92     while (!iter.end()) {
  93         const RangeType & element = iter.next();
  94         RangeType result = element.intersection (toFind);
  95
  96         if (result.size())
  97             return true;
  98     }
  99
 100     return false;
 101 }
 102
 103 ACLData<int> *
 104 ACLIntRange::clone() const
 105 {
 106     if (!ranges.empty())
 107         fatal("ACLIntRange::clone: attempt to clone used ACL");
 108
 109     return new ACLIntRange (*this);
 110 }
 111
 112 ACLIntRange::~ACLIntRange ()
 113 {}
 114
 115 wordlist *
 116 ACLIntRange::dump ()
 117 {
 118     wordlist *W = NULL;
 119     char buf[32];
 120     CbDataListIterator<RangeType> iter(ranges);
 121
 122     while (!iter.end()) {
 123         const RangeType & element = iter.next();
 124
 125         if (element.size() == 1)
 126             snprintf(buf, sizeof(buf), "%d", element.start);
 127         else
 128             snprintf(buf, sizeof(buf), "%d-%d", element.start, element.end-1);
 129
 130         wordlistAdd(&W, buf);
 131     }
 132
 133     return W;
 134 }
 135