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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
47namespace google_breakpad {
48
49Exploitability::Exploitability(Minidump *dump,
50                               ProcessState *process_state)
51    : dump_(dump),
52      process_state_(process_state) {}
53
54ExploitabilityRating Exploitability::CheckExploitability() {
55  return CheckPlatformExploitability();
56}
57
58Exploitability *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
99bool 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