michael@0: // Copyright (c) 2010 Google Inc.
michael@0: // All rights reserved.
michael@0: //
michael@0: // Redistribution and use in source and binary forms, with or without
michael@0: // modification, are permitted provided that the following conditions are
michael@0: // met:
michael@0: //
michael@0: //     * Redistributions of source code must retain the above copyright
michael@0: // notice, this list of conditions and the following disclaimer.
michael@0: //     * Redistributions in binary form must reproduce the above
michael@0: // copyright notice, this list of conditions and the following disclaimer
michael@0: // in the documentation and/or other materials provided with the
michael@0: // distribution.
michael@0: //     * Neither the name of Google Inc. nor the names of its
michael@0: // contributors may be used to endorse or promote products derived from
michael@0: // this software without specific prior written permission.
michael@0: //
michael@0: // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0: // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0: // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0: // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
michael@0: // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
michael@0: // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
michael@0: // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
michael@0: // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
michael@0: // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0: // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
michael@0: // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0: 
michael@0: // exploitability_engine.cc: Generic exploitability engine.
michael@0: //
michael@0: // See exploitable_engine.h for documentation.
michael@0: //
michael@0: // Author: Cris Neckar
michael@0: 
michael@0: 
michael@0: #include <cassert>
michael@0: 
michael@0: #include "common/scoped_ptr.h"
michael@0: #include "google_breakpad/processor/exploitability.h"
michael@0: #include "google_breakpad/processor/minidump.h"
michael@0: #include "google_breakpad/processor/process_state.h"
michael@0: #include "processor/exploitability_win.h"
michael@0: #include "processor/logging.h"
michael@0: 
michael@0: namespace google_breakpad {
michael@0: 
michael@0: Exploitability::Exploitability(Minidump *dump,
michael@0:                                ProcessState *process_state)
michael@0:     : dump_(dump),
michael@0:       process_state_(process_state) {}
michael@0: 
michael@0: ExploitabilityRating Exploitability::CheckExploitability() {
michael@0:   return CheckPlatformExploitability();
michael@0: }
michael@0: 
michael@0: Exploitability *Exploitability::ExploitabilityForPlatform(
michael@0:     Minidump *dump,
michael@0:     ProcessState *process_state) {
michael@0:   Exploitability *platform_exploitability = NULL;
michael@0:   MinidumpSystemInfo *minidump_system_info = dump->GetSystemInfo();
michael@0:   if (!minidump_system_info)
michael@0:     return NULL;
michael@0: 
michael@0:   const MDRawSystemInfo *raw_system_info =
michael@0:     minidump_system_info->system_info();
michael@0:   if (!raw_system_info)
michael@0:     return NULL;
michael@0: 
michael@0:   switch (raw_system_info->platform_id) {
michael@0:     case MD_OS_WIN32_NT:
michael@0:     case MD_OS_WIN32_WINDOWS: {
michael@0:       platform_exploitability = new ExploitabilityWin(dump,
michael@0:                                                       process_state);
michael@0:       break;
michael@0:     }
michael@0:     case MD_OS_MAC_OS_X:
michael@0:     case MD_OS_IOS:
michael@0:     case MD_OS_LINUX:
michael@0:     case MD_OS_UNIX:
michael@0:     case MD_OS_SOLARIS:
michael@0:     case MD_OS_ANDROID:
michael@0:     default: {
michael@0:       platform_exploitability = NULL;
michael@0:       break;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   BPLOG_IF(ERROR, !platform_exploitability) <<
michael@0:     "No Exploitability module for platform: " <<
michael@0:     process_state->system_info()->os;
michael@0:   return platform_exploitability;
michael@0: }
michael@0: 
michael@0: bool Exploitability::AddressIsAscii(uint64_t address) {
michael@0:   for (int i = 0; i < 8; i++) {
michael@0:     uint8_t byte = (address >> (8*i)) & 0xff;
michael@0:     if ((byte >= ' ' && byte <= '~') || byte == 0)
michael@0:       continue;
michael@0:     return false;
michael@0:   }
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: }  // namespace google_breakpad
michael@0: