src/auth/Scheme.cc

   1 /*
   2  * $Id$
   3  *
   4  * DEBUG: section 29    Authenticator
   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  * Copyright (c) 2004, Robert Collins <robertc@squid-cache.org>
  34  */
  35
  36 #include "squid.h"
  37 #include "auth/Scheme.h"
  38 #include "auth/Gadgets.h"
  39 #include "auth/Config.h"
  40
  41 Vector<AuthScheme::Pointer> *AuthScheme::_Schemes = NULL;
  42
  43 void
  44 AuthScheme::AddScheme(AuthScheme::Pointer instance)
  45 {
  46     iterator i = GetSchemes().begin();
  47
  48     while (i != GetSchemes().end()) {
  49         assert(strcmp((*i)->type(), instance->type()) != 0);
  50         ++i;
  51     }
  52
  53     GetSchemes().push_back(instance);
  54 }
  55
  56 AuthScheme::Pointer
  57 AuthScheme::Find(const char *typestr)
  58 {
  59     for (iterator i = GetSchemes().begin(); i != GetSchemes().end(); ++i) {
  60         if (strcmp ((*i)->type(), typestr) == 0)
  61             return *i;
  62     }
  63
  64     return AuthScheme::Pointer(NULL);
  65 }
  66
  67 Vector<AuthScheme::Pointer> &
  68 AuthScheme::GetSchemes()
  69 {
  70     if (!_Schemes)
  71         _Schemes = new Vector<AuthScheme::Pointer>;
  72
  73     return *_Schemes;
  74 }
  75
  76 /**
  77  * Called when a graceful shutdown is to occur of each scheme module.
  78  * On completion the auth components are to be considered deleted.
  79  * None will be available globally. Some may remain around for their
  80  * currently active connections to close, but only those active
  81  * connections will retain pointers to them.
  82  */
  83 void
  84 AuthScheme::FreeAll()
  85 {
  86     assert(shutting_down);
  87
  88     while (GetSchemes().size()) {
  89         AuthScheme::Pointer scheme = GetSchemes().back();
  90         GetSchemes().pop_back();
  91         scheme->done();
  92     }
  93 }