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      1 // Copyright (c) 2012 Google Inc.
      2 // All rights reserved.
      3 //
      4 // Redistribution and use in source and binary forms, with or without
      5 // modification, are permitted provided that the following conditions are
      6 // met:
      7 //
      8 //     * Redistributions of source code must retain the above copyright
      9 // notice, this list of conditions and the following disclaimer.
     10 //     * Redistributions in binary form must reproduce the above
     11 // copyright notice, this list of conditions and the following disclaimer
     12 // in the documentation and/or other materials provided with the
     13 // distribution.
     14 //     * Neither the name of Google Inc. nor the names of its
     15 // contributors may be used to endorse or promote products derived from
     16 // this software without specific prior written permission.
     17 //
     18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29 
     30 #include <stdio.h>
     31 
     32 #include "client/linux/handler/minidump_descriptor.h"
     33 
     34 #include "common/linux/guid_creator.h"
     35 
     36 namespace google_breakpad {
     37 
     38 //static
     39 const MinidumpDescriptor::MicrodumpOnConsole
     40     MinidumpDescriptor::kMicrodumpOnConsole = {};
     41 
     42 MinidumpDescriptor::MinidumpDescriptor(const MinidumpDescriptor& descriptor)
     43     : mode_(descriptor.mode_),
     44       fd_(descriptor.fd_),
     45       directory_(descriptor.directory_),
     46       c_path_(NULL),
     47       size_limit_(descriptor.size_limit_) {
     48   // The copy constructor is not allowed to be called on a MinidumpDescriptor
     49   // with a valid path_, as getting its c_path_ would require the heap which
     50   // can cause problems in compromised environments.
     51   assert(descriptor.path_.empty());
     52 }
     53 
     54 MinidumpDescriptor& MinidumpDescriptor::operator=(
     55     const MinidumpDescriptor& descriptor) {
     56   assert(descriptor.path_.empty());
     57 
     58   mode_ = descriptor.mode_;
     59   fd_ = descriptor.fd_;
     60   directory_ = descriptor.directory_;
     61   path_.clear();
     62   if (c_path_) {
     63     // This descriptor already had a path set, so generate a new one.
     64     c_path_ = NULL;
     65     UpdatePath();
     66   }
     67   size_limit_ = descriptor.size_limit_;
     68   return *this;
     69 }
     70 
     71 void MinidumpDescriptor::UpdatePath() {
     72   assert(mode_ == kWriteMinidumpToFile && !directory_.empty());
     73 
     74   GUID guid;
     75   char guid_str[kGUIDStringLength + 1];
     76   if (!CreateGUID(&guid) || !GUIDToString(&guid, guid_str, sizeof(guid_str))) {
     77     assert(false);
     78   }
     79 
     80   path_.clear();
     81   path_ = directory_ + "/" + guid_str + ".dmp";
     82   c_path_ = path_.c_str();
     83 }
     84 
     85 }  // namespace google_breakpad
     86