src/auth/Scheme.cc

   1 /*
   2  * DEBUG: section 29    Authenticator
   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  * Copyright (c) 2004, Robert Collins <robertc@squid-cache.org>
  32  */
  33
  34 #include "squid.h"
  35 #include "auth/Config.h"
  36 #include "auth/Gadgets.h"
  37 #include "auth/Scheme.h"
  38 #include "globals.h"
  39
  40 std::vector<Auth::Scheme::Pointer> *Auth::Scheme::_Schemes = NULL;
  41
  42 void
  43 Auth::Scheme::AddScheme(Auth::Scheme::Pointer instance)
  44 {
  45     iterator i = GetSchemes().begin();
  46
  47     while (i != GetSchemes().end()) {
  48         assert(strcmp((*i)->type(), instance->type()) != 0);
  49         ++i;
  50     }
  51
  52     GetSchemes().push_back(instance);
  53 }
  54
  55 Auth::Scheme::Pointer
  56 Auth::Scheme::Find(const char *typestr)
  57 {
  58     for (iterator i = GetSchemes().begin(); i != GetSchemes().end(); ++i) {
  59         if (strcmp((*i)->type(), typestr) == 0)
  60             return *i;
  61     }
  62
  63     return Auth::Scheme::Pointer(NULL);
  64 }
  65
  66 std::vector<Auth::Scheme::Pointer> &
  67 Auth::Scheme::GetSchemes()
  68 {
  69     if (!_Schemes)
  70         _Schemes = new std::vector<Auth::Scheme::Pointer>;
  71
  72     return *_Schemes;
  73 }
  74
  75 /**
  76  * Called when a graceful shutdown is to occur of each scheme module.
  77  * On completion the auth components are to be considered deleted.
  78  * None will be available globally. Some may remain around for their
  79  * currently active connections to close, but only those active
  80  * connections will retain pointers to them.
  81  */
  82 void
  83 Auth::Scheme::FreeAll()
  84 {
  85     assert(shutting_down);
  86
  87     while (GetSchemes().size()) {
  88         Auth::Scheme::Pointer scheme = GetSchemes().back();
  89         GetSchemes().pop_back();
  90         scheme->shutdownCleanup();
  91     }
  92 }