The Tor Browser: toolkit/crashreporter/google-breakpad/src/processor/module

toolkit/crashreporter/google-breakpad/src/processor/module_serializer.cc@129ffea94266 (annotated)

toolkit/crashreporter/google-breakpad/src/processor/module_serializer.cc

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 // Copyright (c) 2010, 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.
 //
 // module_serializer.cc: ModuleSerializer implementation.
 //
 // See module_serializer.h for documentation.
 //
 // Author: Siyang Xie (lambxsy@google.com)
 #include "processor/module_serializer.h"
 #include <map>
 #include <string>
 #include "processor/basic_code_module.h"
 #include "processor/logging.h"
 namespace google_breakpad {
 // Definition of static member variable in SimplerSerializer<Funcion>, which
 // is declared in file "simple_serializer-inl.h"
 RangeMapSerializer< MemAddr, linked_ptr<BasicSourceLineResolver::Line> >
 SimpleSerializer<BasicSourceLineResolver::Function>::range_map_serializer_;
 size_t ModuleSerializer::SizeOf(const BasicSourceLineResolver::Module &module) {
   size_t total_size_alloc_ = 0;
   // Compute memory size for each map component in Module class.
   int map_index = 0;
   map_sizes_[map_index++] = files_serializer_.SizeOf(module.files_);
   map_sizes_[map_index++] = functions_serializer_.SizeOf(module.functions_);
   map_sizes_[map_index++] = pubsym_serializer_.SizeOf(module.public_symbols_);
   for (int i = 0; i < WindowsFrameInfo::STACK_INFO_LAST; ++i)
    map_sizes_[map_index++] =
        wfi_serializer_.SizeOf(&(module.windows_frame_info_[i]));
   map_sizes_[map_index++] = cfi_init_rules_serializer_.SizeOf(
      module.cfi_initial_rules_);
   map_sizes_[map_index++] = cfi_delta_rules_serializer_.SizeOf(
      module.cfi_delta_rules_);
   // Header size.
   total_size_alloc_ = kNumberMaps_ * sizeof(uint32_t);
   for (int i = 0; i < kNumberMaps_; ++i)
    total_size_alloc_ += map_sizes_[i];
   // Extra one byte for null terminator for C-string copy safety.
   ++total_size_alloc_;
   return total_size_alloc_;
 }
 char *ModuleSerializer::Write(const BasicSourceLineResolver::Module &module,
                               char *dest) {
   // Write header.
   memcpy(dest, map_sizes_, kNumberMaps_ * sizeof(uint32_t));
   dest += kNumberMaps_ * sizeof(uint32_t);
   // Write each map.
   dest = files_serializer_.Write(module.files_, dest);
   dest = functions_serializer_.Write(module.functions_, dest);
   dest = pubsym_serializer_.Write(module.public_symbols_, dest);
   for (int i = 0; i < WindowsFrameInfo::STACK_INFO_LAST; ++i)
     dest = wfi_serializer_.Write(&(module.windows_frame_info_[i]), dest);
   dest = cfi_init_rules_serializer_.Write(module.cfi_initial_rules_, dest);
   dest = cfi_delta_rules_serializer_.Write(module.cfi_delta_rules_, dest);
   // Write a null terminator.
   dest = SimpleSerializer<char>::Write(0, dest);
   return dest;
 }
 char* ModuleSerializer::Serialize(
     const BasicSourceLineResolver::Module &module, unsigned int *size) {
   // Compute size of memory to allocate.
   unsigned int size_to_alloc = SizeOf(module);
   // Allocate memory for serialized data.
   char *serialized_data = new char[size_to_alloc];
   if (!serialized_data) {
     BPLOG(ERROR) << "ModuleSerializer: memory allocation failed, "
                  << "size to alloc: " << size_to_alloc;
     if (size) *size = 0;
     return NULL;
   }
   // Write serialized data to allocated memory chunk.
   char *end_address = Write(module, serialized_data);
   // Verify the allocated memory size is equal to the size of data been written.
   unsigned int size_written =
       static_cast<unsigned int>(end_address - serialized_data);
   if (size_to_alloc != size_written) {
     BPLOG(ERROR) << "size_to_alloc differs from size_written: "
                    << size_to_alloc << " vs " << size_written;
   }
   // Set size and return the start address of memory chunk.
   if (size)
     *size = size_to_alloc;
   return serialized_data;
 }
 bool ModuleSerializer::SerializeModuleAndLoadIntoFastResolver(
     const BasicSourceLineResolver::ModuleMap::const_iterator &iter,
     FastSourceLineResolver *fast_resolver) {
   BPLOG(INFO) << "Converting symbol " << iter->first.c_str();
   // Cast SourceLineResolverBase::Module* to BasicSourceLineResolver::Module*.
   BasicSourceLineResolver::Module* basic_module =
       dynamic_cast<BasicSourceLineResolver::Module*>(iter->second);
   unsigned int size = 0;
   scoped_array<char> symbol_data(Serialize(*basic_module, &size));
   if (!symbol_data.get()) {
     BPLOG(ERROR) << "Serialization failed for module: " << basic_module->name_;
     return false;
   }
   BPLOG(INFO) << "Serialized Symbol Size " << size;
   // Copy the data into string.
   // Must pass string to LoadModuleUsingMapBuffer(), instead of passing char* to
   // LoadModuleUsingMemoryBuffer(), becaused of data ownership/lifetime issue.
   string symbol_data_string(symbol_data.get(), size);
   symbol_data.reset();
   scoped_ptr<CodeModule> code_module(
       new BasicCodeModule(0, 0, iter->first, "", "", "", ""));
   return fast_resolver->LoadModuleUsingMapBuffer(code_module.get(),
                                                  symbol_data_string);
 }
 void ModuleSerializer::ConvertAllModules(
     const BasicSourceLineResolver *basic_resolver,
     FastSourceLineResolver *fast_resolver) {
   // Check for NULL pointer.
   if (!basic_resolver || !fast_resolver)
     return;
   // Traverse module list in basic resolver.
   BasicSourceLineResolver::ModuleMap::const_iterator iter;
   iter = basic_resolver->modules_->begin();
   for (; iter != basic_resolver->modules_->end(); ++iter)
     SerializeModuleAndLoadIntoFastResolver(iter, fast_resolver);
 }
 bool ModuleSerializer::ConvertOneModule(
     const string &moduleid,
     const BasicSourceLineResolver *basic_resolver,
     FastSourceLineResolver *fast_resolver) {
   // Check for NULL pointer.
   if (!basic_resolver || !fast_resolver)
     return false;
   BasicSourceLineResolver::ModuleMap::const_iterator iter;
   iter = basic_resolver->modules_->find(moduleid);
   if (iter == basic_resolver->modules_->end())
     return false;
   return SerializeModuleAndLoadIntoFastResolver(iter, fast_resolver);
 }
 char* ModuleSerializer::SerializeSymbolFileData(
     const string &symbol_data, unsigned int *size) {
   scoped_ptr<BasicSourceLineResolver::Module> module(
       new BasicSourceLineResolver::Module("no name"));
   scoped_array<char> buffer(new char[symbol_data.size() + 1]);
   strcpy(buffer.get(), symbol_data.c_str());
   if (!module->LoadMapFromMemory(buffer.get())) {
     return NULL;
   }
   buffer.reset(NULL);
   return Serialize(*(module.get()), size);
 }
 }  // namespace google_breakpad

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toolkit/crashreporter/google-breakpad/src/processor/module_serializer.cc@129ffea94266 (annotated)

toolkit/crashreporter/google-breakpad/src/processor/module_serializer.cc