Network/networkchooser.cpp

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 //
  20 // chooser - Protocol repository and Transfer maker for network protocols
  21 //
  22 #include "networkchooser.h"
  23
  24
  25 namespace Security {
  26 namespace Network {
  27
  28
  29 Chooser::Chooser(Manager &mgr) : manager(mgr)
  30 {
  31 }
  32
  33 Chooser::~Chooser()
  34 {
  35 }
  36
  37
  38 //
  39 // Add, remove, and locate primary Protocols by name.
  40 //
  41 void Chooser::add(Protocol *protocol)
  42 {
  43     //@@@ locking
  44     Protocol * &proto = mCoreProtocols[protocol->urlPrefix()];
  45     assert(proto == NULL);
  46     proto = protocol;
  47 }
  48
  49 void Chooser::remove(Protocol *protocol)
  50 {
  51     ProtoMap::iterator it = mCoreProtocols.find(protocol->urlPrefix());
  52     assert(it != mCoreProtocols.end());
  53     mCoreProtocols.erase(it);
  54 }
  55
  56 Protocol &Chooser::protocolFor(const char *protoName) const
  57 {
  58     ProtoMap::const_iterator it = mCoreProtocols.find(protoName);
  59     if (it == mCoreProtocols.end())
  60         UnixError::throwMe(ENOENT);
  61     return *it->second;
  62 }
  63
  64
  65 //
  66 // The default implementation of protocolFor just finds a direct-connection Protocol
  67 // for the target's scheme.
  68 //
  69 Protocol &Chooser::protocolFor(const HostTarget &target) const
  70 {
  71     return protocolFor(target.scheme());
  72 }
  73
  74
  75 //
  76 // Here is a short-cut makeTransfer method.
  77 // It simply determines the proper Protocol, creates a Transfer from it, and adds it
  78 // to the Manager.
  79 //
  80 Transfer *Chooser::makeTransfer(const Target &target, Operation operation)
  81 {
  82     Protocol &protocol = protocolFor(target);
  83     //@@@ use auto_ptr here?
  84     Transfer *transfer = protocol.makeTransfer(target, operation);
  85     manager.add(transfer);
  86     return transfer;
  87 }
  88
  89
  90 }       // end namespace Network
  91 }       // end namespace Security