Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_utilities / lib / headermap.h

diff --git a/Security/libsecurity_utilities/lib/headermap.h b/Security/libsecurity_utilities/lib/headermap.h
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+++ b/Security/libsecurity_utilities/lib/headermap.h
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+/*
+ * Copyright (c) 2000-2002,2004,2011,2014 Apple Inc. All Rights Reserved.
+ * 
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+//
+// headermap - represent Internet-standard headers
+//
+//@@@ Handle duplicate entries.
+//@@@ Be flexible: think HTTP (append with commas) vs. RFC822 (multiple Received: headers etc.)
+//
+#ifndef _H_HEADERMAP
+#define _H_HEADERMAP
+
+#include <string>
+#include <map>
+
+
+namespace Security {
+
+
+//
+// Header-maps
+//
+class HeaderMap {
+    static const int maxKeyLength = 80;
+    typedef std::map<std::string, std::string> Map;
+public:
+    HeaderMap() { }
+    virtual ~HeaderMap() { }
+    
+    virtual void merge(std::string key, std::string &old, std::string newValue);
+    
+    void add(const char *key, const char *value);
+    void add(const char *line);                // Key: value
+    void remove(const char *key);
+
+    const char *find(const char *key, const char *def = NULL) const;
+    std::string &operator [] (const char *key);
+    
+    typedef Map::const_iterator ConstIterator;
+    ConstIterator begin() const        { return mMap.begin(); }
+    ConstIterator end() const  { return mMap.end(); }
+    
+    typedef Map::const_iterator Iterator;
+    Iterator begin()                   { return mMap.begin(); }
+    Iterator end()                             { return mMap.end(); }    
+    
+    std::string collect(const char *lineEnding = "\r\n") const;
+    size_t collectLength(const char *lineEnding = "\r\n") const;
+    
+private:
+    //
+    // In-place case canonicalization of header keys
+    //
+    struct CanonicalKey {
+        CanonicalKey(const char *key, char end = '\0');
+        operator const char *() const { return mValue; }
+        operator std::string () const { return mValue; }
+    private:
+        char mValue[maxKeyLength];
+    };
+    
+    void add(const CanonicalKey &key, const char *value);
+
+private:
+    Map mMap;                                          // map of key: value pairs
+};
+
+
+}      // end namespace Security
+
+
+#endif /* _H_HEADERMAP */