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// Copyright (c) 2006, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// file_id.h: Return a unique identifier for a file
//
// Author: Dan Waylonis
#ifndef COMMON_MAC_FILE_ID_H__
#define COMMON_MAC_FILE_ID_H__
#include <limits.h>
namespace google_airbag {
class FileID {
public:
FileID(const char *path);
~FileID() {};
// Load the identifier for the file path specified in the constructor into
// |identifier|. Return false if the identifier could not be created for the
// file.
// The current implementation will return the MD5 hash of the file's bytes.
bool FileIdentifier(unsigned char identifier[16]);
// Treat the file as a mach-o file that will contain one or more archicture.
// Accepted values for |cpu_type| (e.g., CPU_TYPE_X86 or CPU_TYPE_POWERPC)
// are listed in /usr/include/mach/machine.h.
// If |cpu_type| is 0, then the native cpu type is used.
// Returns false if opening the file failed or if the |cpu_type| is not
// present in the file.
// Return the unique identifier in |identifier|.
// The current implementation will look for the (in order of priority):
// LC_UUID, LC_ID_DYLIB, or MD5 hash of the given |cpu_type|.
bool MachoIdentifier(int cpu_type, unsigned char identifier[16]);
// Convert the |identifier| data to a NULL terminated string. The string will
// be formatted as a UUID (e.g., 22F065BB-FC9C-49F7-80FE-26A7CEBD7BCE).
// The |buffer| should be at least 37 bytes long to receive all of the data
// and termination. Shorter buffers will contain truncated data.
static void ConvertIdentifierToString(const unsigned char identifier[16],
char *buffer, int buffer_length);
private:
// Storage for the path specified
char path_[PATH_MAX];
};
} // namespace google_airbag
#endif // COMMON_MAC_FILE_ID_H__
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