win32: move platform specifics to osdep

This will probably disable this code for Cygwin. I don't know if this
matters, since Cygwin should strictly behave like a Unix anyway.

(cherry picked from commit 3508a3fbd12b93e0414acb7996417dd91f369170)

1 files changed, 28 insertions, 0 deletions

diff --git a/osdep/main-fn-win.c b/osdep/main-fn-win.c
index d8dbcd5a8b..5b0f22058d 100644
--- a/osdep/main-fn-win.c
+++ b/osdep/main-fn-win.c
@@ -1,5 +1,9 @@
 #include <windows.h>
 
+#ifndef BASE_SEARCH_PATH_ENABLE_SAFE_SEARCHMODE
+#define BASE_SEARCH_PATH_ENABLE_SAFE_SEARCHMODE (0x0001)
+#endif
+
 #include "config.h"
 
 #include "common/common.h"
@@ -25,8 +29,32 @@ static bool has_redirected_stdio(void)
            is_valid_handle(GetStdHandle(STD_ERROR_HANDLE));
 }
 
+static void microsoft_nonsense(void)
+{
+    // stop Windows from showing all kinds of annoying error dialogs
+    SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
+
+    // Enable heap corruption detection
+    HeapSetInformation(NULL, HeapEnableTerminationOnCorruption, NULL, 0);
+
+    HMODULE kernel32 = GetModuleHandleW(L"kernel32.dll");
+    WINBOOL (WINAPI *pSetDllDirectory)(LPCWSTR lpPathName) =
+        (WINBOOL (WINAPI *)(LPCWSTR))GetProcAddress(kernel32, "SetDllDirectoryW");
+    WINBOOL (WINAPI *pSetSearchPathMode)(DWORD Flags) =
+        (WINBOOL (WINAPI *)(DWORD))GetProcAddress(kernel32, "SetSearchPathMode");
+
+    // Always use safe search paths for DLLs and other files, ie. never use the
+    // current directory
+    if (pSetSearchPathMode)
+        pSetDllDirectory(L"");
+    if (pSetSearchPathMode)
+        pSetSearchPathMode(BASE_SEARCH_PATH_ENABLE_SAFE_SEARCHMODE);
+}
+
 int wmain(int argc, wchar_t *argv[])
 {
+    microsoft_nonsense();
+
     // If started from the console wrapper (see osdep/win32-console-wrapper.c),
     // attach to the console and set up the standard IO handles
     bool has_console = terminal_try_attach();