1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CHROME_ELF_BLACKLIST_BLACKLIST_H_
6 #define CHROME_ELF_BLACKLIST_BLACKLIST_H_
9 #include "sandbox/win/src/sandbox_nt_types.h"
14 // Max size of the DLL blacklist.
15 const size_t kTroublesomeDllsMaxCount = 64;
18 extern const wchar_t* g_troublesome_dlls[kTroublesomeDllsMaxCount];
21 extern NtMapViewOfSectionFunction g_nt_map_view_of_section_func;
24 // Attempts to leave a beacon in the current user's registry hive. If the
25 // blacklist beacon doesn't say it is enabled or there are any other errors when
26 // creating the beacon, returns false. Otherwise returns true. The intent of the
27 // beacon is to act as an extra failure mode protection whereby if Chrome
28 // repeatedly fails to start during blacklist setup, it will skip blacklisting
29 // on the subsequent run.
30 bool LeaveSetupBeacon();
32 // Looks for the setup running beacon that LeaveSetupBeacon() creates and resets
33 // it to to show the setup was successful.
34 // Returns true if the beacon was successfully set to BLACKLIST_ENABLED.
37 // Return the size of the current blacklist.
40 // Returns if true if the blacklist has been initialized.
41 extern "C" bool IsBlacklistInitialized();
43 // Adds the given dll name to the blacklist. Returns true if the dll name is in
44 // the blacklist when this returns, false on error. Note that this will copy
45 // |dll_name| and will leak it on exit if the string is not subsequently removed
46 // using RemoveDllFromBlacklist.
47 // Exposed for testing only, this shouldn't be exported from chrome_elf.dll.
48 extern "C" bool AddDllToBlacklist(const wchar_t* dll_name);
50 // Removes the given dll name from the blacklist. Returns true if it was
51 // removed, false on error.
52 // Exposed for testing only, this shouldn't be exported from chrome_elf.dll.
53 extern "C" bool RemoveDllFromBlacklist(const wchar_t* dll_name);
55 // Returns a list of all the dlls that have been successfully blocked by the
56 // blacklist via blocked_dlls, if there is enough space (according to |size|).
57 // |size| will always be modified to be the number of dlls that were blocked.
58 // The caller doesn't own the strings and isn't expected to free them. These
59 // strings won't be hanging unless RemoveDllFromBlacklist is called, but it
60 // is only exposed in tests (and should stay that way).
61 extern "C" void SuccessfullyBlocked(const wchar_t** blocked_dlls, int* size);
63 // Add the dlls, originally passed in through finch, from the registry to the
64 // blacklist so that they will be blocked identically to those hard coded in.
65 extern "C" bool AddDllsFromRegistryToBlacklist();
67 // Record that the dll at the given index was blocked.
68 void BlockedDll(size_t blocked_index);
70 // Initializes the DLL blacklist in the current process. This should be called
71 // before any undesirable DLLs might be loaded. If |force| is set to true, then
72 // initialization will take place even if a beacon is present. This is useful
74 bool Initialize(bool force);
76 } // namespace blacklist
78 #endif // CHROME_ELF_BLACKLIST_BLACKLIST_H_