libsecurity_utilities/lib/headermap.h

   1 /*
   2  * Copyright (c) 2000-2002,2004 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 //
  26 // headermap - represent Internet-standard headers
  27 //
  28 //@@@ Handle duplicate entries.
  29 //@@@ Be flexible: think HTTP (append with commas) vs. RFC822 (multiple Received: headers etc.)
  30 //
  31 #ifndef _H_HEADERMAP
  32 #define _H_HEADERMAP
  33
  34 #include <string>
  35 #include <map>
  36
  37
  38 namespace Security {
  39
  40
  41 //
  42 // Header-maps
  43 //
  44 class HeaderMap {
  45     static const int maxKeyLength = 80;
  46     typedef std::map<std::string, std::string> Map;
  47 public:
  48     HeaderMap() { }
  49     virtual ~HeaderMap() { }
  50
  51     virtual void merge(std::string key, std::string &old, std::string newValue);
  52
  53     void add(const char *key, const char *value);
  54     void add(const char *line);         // Key: value
  55     void remove(const char *key);
  56
  57     const char *find(const char *key, const char *def = NULL) const;
  58     std::string &operator [] (const char *key);
  59
  60     typedef Map::const_iterator ConstIterator;
  61     ConstIterator begin() const { return mMap.begin(); }
  62     ConstIterator end() const   { return mMap.end(); }
  63
  64     typedef Map::const_iterator Iterator;
  65     Iterator begin()                    { return mMap.begin(); }
  66     Iterator end()                              { return mMap.end(); }
  67
  68     std::string collect(const char *lineEnding = "\r\n") const;
  69     size_t collectLength(const char *lineEnding = "\r\n") const;
  70
  71 private:
  72     //
  73     // In-place case canonicalization of header keys
  74     //
  75     struct CanonicalKey {
  76         CanonicalKey(const char *key, char end = '\0');
  77         operator const char *() const { return mValue; }
  78         operator std::string () const { return mValue; }
  79     private:
  80         char mValue[maxKeyLength];
  81     };
  82
  83     void add(const CanonicalKey &key, const char *value);
  84
  85 private:
  86     Map mMap;                                           // map of key: value pairs
  87 };
  88
  89
  90 }       // end namespace Security
  91
  92
  93 #endif /* _H_HEADERMAP */