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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 
47 namespace google_breakpad {
48 
Exploitability(Minidump * dump,ProcessState * process_state)49 Exploitability::Exploitability(Minidump *dump,
50                                ProcessState *process_state)
51     : dump_(dump),
52       process_state_(process_state) {}
53 
CheckExploitability()54 ExploitabilityRating Exploitability::CheckExploitability() {
55   return CheckPlatformExploitability();
56 }
57 
ExploitabilityForPlatform(Minidump * dump,ProcessState * process_state)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 
AddressIsAscii(uint64_t address)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