src/HttpHdrCc.cci

   1 /*
   2  *
   3  * DEBUG: section 65    HTTP Cache Control Header
   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 bool
  33 HttpHdrCc::isSet(http_hdr_cc_type id) const
  34 {
  35     assert(id>=CC_PUBLIC && id < CC_ENUM_END);
  36     return EBIT_TEST(mask,id);
  37 }
  38
  39 void
  40 HttpHdrCc::setMask(http_hdr_cc_type id, bool newval)
  41 {
  42     if (newval)
  43         EBIT_SET(mask,id);
  44     else
  45         EBIT_CLR(mask,id);
  46 }
  47
  48 /// set a data member to a new value, and set the corresponding mask-bit.
  49 /// if setting is false, then the mask-bit is cleared.
  50 void
  51 HttpHdrCc::setValue(int32_t &value, int32_t new_value, http_hdr_cc_type hdr, bool setting)
  52 {
  53     if (setting) {
  54         if (new_value < 0) {
  55             debugs(65,3,HERE << "rejecting negative-value Cache-Control directive " << hdr
  56                    << " value " << new_value );
  57             return;
  58         }
  59     } else {
  60         new_value=-1; //rely on the convention that "unknown" is -1
  61     }
  62
  63     value=new_value;
  64     setMask(hdr,setting);
  65 }