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| author | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-04-05 20:01:10 +0200 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-04-05 20:01:10 +0200 |
| commit | c3b63b831cd2c64700e875b28540212c7c881ac6 (patch) | |
| tree | edd98fcbd2004d3b562904f822bf6c3322fc7f52 /other-licenses/7zstub/src/C/DllSecur.c | |
| parent | d432e068a21c815d5d5e7bcbc1cc8c6e77a7d1e0 (diff) | |
| parent | cc07da9cb4d6e7a53f8d953427ffc2bca2e0c2df (diff) | |
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Merge branch 'master' into 816
Diffstat (limited to 'other-licenses/7zstub/src/C/DllSecur.c')
| -rw-r--r-- | other-licenses/7zstub/src/C/DllSecur.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/C/DllSecur.c b/other-licenses/7zstub/src/C/DllSecur.c new file mode 100644 index 000000000..8745421ac --- /dev/null +++ b/other-licenses/7zstub/src/C/DllSecur.c @@ -0,0 +1,87 @@ +/* DllSecur.c -- DLL loading security
+2016-10-04 : Igor Pavlov : Public domain */
+
+#include "Precomp.h"
+
+#ifdef _WIN32
+
+#include <windows.h>
+
+#include "DllSecur.h"
+
+#ifndef UNDER_CE
+
+typedef BOOL (WINAPI *Func_SetDefaultDllDirectories)(DWORD DirectoryFlags);
+
+#define MY_LOAD_LIBRARY_SEARCH_USER_DIRS 0x400
+#define MY_LOAD_LIBRARY_SEARCH_SYSTEM32 0x800
+
+static const char * const g_Dlls =
+ #ifndef _CONSOLE
+ "UXTHEME\0"
+ #endif
+ "USERENV\0"
+ "SETUPAPI\0"
+ "APPHELP\0"
+ "PROPSYS\0"
+ "DWMAPI\0"
+ "CRYPTBASE\0"
+ "OLEACC\0"
+ "CLBCATQ\0"
+ ;
+
+#endif
+
+void LoadSecurityDlls()
+{
+ #ifndef UNDER_CE
+
+ wchar_t buf[MAX_PATH + 100];
+
+ {
+ // at Vista (ver 6.0) : CoCreateInstance(CLSID_ShellLink, ...) doesn't work after SetDefaultDllDirectories() : Check it ???
+ OSVERSIONINFO vi;
+ vi.dwOSVersionInfoSize = sizeof(vi);
+ if (!GetVersionEx(&vi) || vi.dwMajorVersion != 6 || vi.dwMinorVersion != 0)
+ {
+ Func_SetDefaultDllDirectories setDllDirs = (Func_SetDefaultDllDirectories)
+ GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "SetDefaultDllDirectories");
+ if (setDllDirs)
+ if (setDllDirs(MY_LOAD_LIBRARY_SEARCH_SYSTEM32 | MY_LOAD_LIBRARY_SEARCH_USER_DIRS))
+ return;
+ }
+ }
+
+ {
+ unsigned len = GetSystemDirectoryW(buf, MAX_PATH + 2);
+ if (len == 0 || len > MAX_PATH)
+ return;
+ }
+ {
+ const char *dll;
+ unsigned pos = (unsigned)lstrlenW(buf);
+
+ if (buf[pos - 1] != '\\')
+ buf[pos++] = '\\';
+
+ for (dll = g_Dlls; dll[0] != 0;)
+ {
+ unsigned k = 0;
+ for (;;)
+ {
+ char c = *dll++;
+ buf[pos + k] = c;
+ k++;
+ if (c == 0)
+ break;
+ }
+
+ lstrcatW(buf, L".dll");
+ LoadLibraryExW(buf, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
+ }
+ }
+
+ #endif
+}
+
+#endif
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