1 // Copyright (c) 2010 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 // exploitability_engine.cc: Generic exploitability engine. 31 // 32 // See exploitable_engine.h for documentation. 33 // 34 // Author: Cris Neckar 35 36 37 #include <cassert> 38 39 #include "common/scoped_ptr.h" 40 #include "google_breakpad/processor/exploitability.h" 41 #include "google_breakpad/processor/minidump.h" 42 #include "google_breakpad/processor/process_state.h" 43 #include "processor/exploitability_linux.h" 44 #include "processor/exploitability_win.h" 45 #include "processor/logging.h" 46 47 namespace google_breakpad { 48 49 Exploitability::Exploitability(Minidump *dump, 50 ProcessState *process_state) 51 : dump_(dump), 52 process_state_(process_state) {} 53 54 ExploitabilityRating Exploitability::CheckExploitability() { 55 return CheckPlatformExploitability(); 56 } 57 58 Exploitability *Exploitability::ExploitabilityForPlatform( 59 Minidump *dump, 60 ProcessState *process_state) { 61 Exploitability *platform_exploitability = NULL; 62 MinidumpSystemInfo *minidump_system_info = dump->GetSystemInfo(); 63 if (!minidump_system_info) 64 return NULL; 65 66 const MDRawSystemInfo *raw_system_info = 67 minidump_system_info->system_info(); 68 if (!raw_system_info) 69 return NULL; 70 71 switch (raw_system_info->platform_id) { 72 case MD_OS_WIN32_NT: 73 case MD_OS_WIN32_WINDOWS: { 74 platform_exploitability = new ExploitabilityWin(dump, process_state); 75 break; 76 } 77 case MD_OS_LINUX: { 78 platform_exploitability = new ExploitabilityLinux(dump, process_state); 79 break; 80 } 81 case MD_OS_MAC_OS_X: 82 case MD_OS_IOS: 83 case MD_OS_UNIX: 84 case MD_OS_SOLARIS: 85 case MD_OS_ANDROID: 86 case MD_OS_PS3: 87 default: { 88 platform_exploitability = NULL; 89 break; 90 } 91 } 92 93 BPLOG_IF(ERROR, !platform_exploitability) << 94 "No Exploitability module for platform: " << 95 process_state->system_info()->os; 96 return platform_exploitability; 97 } 98 99 bool Exploitability::AddressIsAscii(uint64_t address) { 100 for (int i = 0; i < 8; i++) { 101 uint8_t byte = (address >> (8*i)) & 0xff; 102 if ((byte >= ' ' && byte <= '~') || byte == 0) 103 continue; 104 return false; 105 } 106 return true; 107 } 108 109 } // namespace google_breakpad 110 111
