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// 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.
// exploitability_engine.cc: Generic exploitability engine.
//
// See exploitable_engine.h for documentation.
//
// Author: Cris Neckar
#include <cassert>
#include "common/scoped_ptr.h"
#include "google_breakpad/processor/exploitability.h"
#include "google_breakpad/processor/minidump.h"
#include "google_breakpad/processor/process_state.h"
#include "processor/exploitability_linux.h"
#include "processor/exploitability_win.h"
#include "processor/logging.h"
namespace google_breakpad {
Exploitability::Exploitability(Minidump *dump,
ProcessState *process_state)
: dump_(dump),
process_state_(process_state) {}
ExploitabilityRating Exploitability::CheckExploitability() {
return CheckPlatformExploitability();
}
Exploitability *Exploitability::ExploitabilityForPlatform(
Minidump *dump,
ProcessState *process_state) {
return ExploitabilityForPlatform(dump, process_state, false);
}
Exploitability *Exploitability::ExploitabilityForPlatform(
Minidump *dump,
ProcessState *process_state,
bool enable_objdump) {
Exploitability *platform_exploitability = NULL;
MinidumpSystemInfo *minidump_system_info = dump->GetSystemInfo();
if (!minidump_system_info)
return NULL;
const MDRawSystemInfo *raw_system_info =
minidump_system_info->system_info();
if (!raw_system_info)
return NULL;
switch (raw_system_info->platform_id) {
case MD_OS_WIN32_NT:
case MD_OS_WIN32_WINDOWS: {
platform_exploitability = new ExploitabilityWin(dump, process_state);
break;
}
case MD_OS_LINUX: {
platform_exploitability = new ExploitabilityLinux(dump,
process_state,
enable_objdump);
break;
}
case MD_OS_MAC_OS_X:
case MD_OS_IOS:
case MD_OS_UNIX:
case MD_OS_SOLARIS:
case MD_OS_ANDROID:
case MD_OS_PS3:
case MD_OS_FUCHSIA:
default: {
platform_exploitability = NULL;
break;
}
}
BPLOG_IF(ERROR, !platform_exploitability) <<
"No Exploitability module for platform: " <<
process_state->system_info()->os;
return platform_exploitability;
}
bool Exploitability::AddressIsAscii(uint64_t address) {
for (int i = 0; i < 8; i++) {
uint8_t byte = (address >> (8*i)) & 0xff;
if ((byte >= ' ' && byte <= '~') || byte == 0)
continue;
return false;
}
return true;
}
} // namespace google_breakpad
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