Add GetCommandLine().

Note that we don't free() the malloc()ed command_line buffer. This is modern
Windows, the operating system will do that for us anyway once the target
process terminates.

src/kernel32_dll.c

@@ -18,6 +18,7 @@ const w32u8_pair_t kernel32_pairs[] = {
 	{"GetEnvironmentVariableA", GetEnvironmentVariableU},
 	{"GetFileAttributesA", GetFileAttributesU},
 	{"GetFileAttributesExA", GetFileAttributesExU},
+	{"GetCommandLineA", GetCommandLineU},
 	{"GetModuleFileNameA", GetModuleFileNameU},
 	{"GetPrivateProfileIntA", GetPrivateProfileIntU},
 	{"GetStartupInfoA", GetStartupInfoU},
@@ -455,6 +456,20 @@ DWORD WINAPI FormatMessageU(
 	return ret;
 }
 
+LPSTR WINAPI GetCommandLineU(
+	VOID
+)
+{
+	static char *command_line = NULL;
+	if(!command_line) {
+		const wchar_t *command_line_w = GetCommandLineW();
+		WCSLEN_DEC(command_line_w);
+		command_line = (char*)malloc(command_line_w_len);
+		StringToUTF8(command_line, command_line_w, command_line_w_len);
+	}
+	return command_line;
+}
+
 DWORD WINAPI GetCurrentDirectoryU(
 	DWORD nBufferLength,
 	LPSTR lpBuffer

src/kernel32_dll.h

@@ -74,6 +74,12 @@ DWORD WINAPI FormatMessageU(
 #undef FormatMessage
 #define FormatMessage FormatMessageU
 
+LPSTR WINAPI GetCommandLineU(
+	VOID
+);
+#undef GetCommandLine
+#define GetCommandLine GetCommandLineU
+
 DWORD WINAPI GetCurrentDirectoryU(
 	DWORD nBufferLength,
 	LPSTR lpBuffer

win32_utf8.def

@@ -42,6 +42,7 @@ EXPORTS
 	FindFirstFileU
 	FindNextFileU
 	FormatMessageU
+	GetCommandLineU
 	GetCurrentDirectoryU
 	GetEnvironmentVariableU
 	GetFileAttributesU