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 |
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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 | return ExploitabilityForPlatform(dump, process_state, false); |
62 | } |
63 | |
64 | Exploitability *Exploitability::ExploitabilityForPlatform( |
65 | Minidump *dump, |
66 | ProcessState *process_state, |
67 | bool enable_objdump) { |
68 | Exploitability *platform_exploitability = NULL; |
69 | MinidumpSystemInfo *minidump_system_info = dump->GetSystemInfo(); |
70 | if (!minidump_system_info) |
71 | return NULL; |
72 | |
73 | const MDRawSystemInfo *raw_system_info = |
74 | minidump_system_info->system_info(); |
75 | if (!raw_system_info) |
76 | return NULL; |
77 | |
78 | switch (raw_system_info->platform_id) { |
79 | case MD_OS_WIN32_NT: |
80 | case MD_OS_WIN32_WINDOWS: { |
81 | platform_exploitability = new ExploitabilityWin(dump, process_state); |
82 | break; |
83 | } |
84 | case MD_OS_LINUX: { |
85 | platform_exploitability = new ExploitabilityLinux(dump, |
86 | process_state, |
87 | enable_objdump); |
88 | break; |
89 | } |
90 | case MD_OS_MAC_OS_X: |
91 | case MD_OS_IOS: |
92 | case MD_OS_UNIX: |
93 | case MD_OS_SOLARIS: |
94 | case MD_OS_ANDROID: |
95 | case MD_OS_PS3: |
96 | case MD_OS_FUCHSIA: |
97 | default: { |
98 | platform_exploitability = NULL; |
99 | break; |
100 | } |
101 | } |
102 | |
103 | BPLOG_IF(ERROR, !platform_exploitability) << |
104 | "No Exploitability module for platform: " << |
105 | process_state->system_info()->os; |
106 | return platform_exploitability; |
107 | } |
108 | |
109 | bool Exploitability::AddressIsAscii(uint64_t address) { |
110 | for (int i = 0; i < 8; i++) { |
111 | uint8_t byte = (address >> (8*i)) & 0xff; |
112 | if ((byte >= ' ' && byte <= '~') || byte == 0) |
113 | continue; |
114 | return false; |
115 | } |
116 | return true; |
117 | } |
118 | |
119 | } // namespace google_breakpad |
120 | |
121 | |