Port Tor to work on Windows CE

Most of the changes here are switches to use APIs available on Windows
CE.  The most pervasive change is that Windows CE only provides the
wide-character ("FooW") variants of most of the windows function, and
doesn't support the older ASCII verions at all.

This patch will require use of the wcecompat library to get working
versions of the posix-style fd-based file IO functions.

[commit message by nickm]

1 files changed, 20 insertions, 12 deletions

diff --git a/src/or/eventdns.c b/src/or/eventdns.c
index 06add11b1d..4e44d15163 100644
--- a/src/or/eventdns.c
+++ b/src/or/eventdns.c
@@ -3132,13 +3132,13 @@ load_nameservers_with_getnetworkparams(void)
 	GetNetworkParams_fn_t fn;
 
 	/* XXXX Possibly, we should hardcode the location of this DLL. */
-	if (!(handle = LoadLibrary("iphlpapi.dll"))) {
+	if (!(handle = LoadLibraryW(L"iphlpapi.dll"))) {
 		log(EVDNS_LOG_WARN, "Could not open iphlpapi.dll");
 		/* right now status = 0, doesn't that mean "good" - mikec */
 		status = -1;
 		goto done;
 	}
-	if (!(fn = (GetNetworkParams_fn_t) GetProcAddress(handle, "GetNetworkParams"))) {
+	if (!(fn = (GetNetworkParams_fn_t) GetProcAddress(handle, TEXT("GetNetworkParams")))) {
 		log(EVDNS_LOG_WARN, "Could not get address of function.");
 		/* same as above */
 		status = -1;
@@ -3205,32 +3205,40 @@ config_nameserver_from_reg_key(HKEY key, const char *subkey)
 {
 	char *buf;
 	DWORD bufsz = 0, type = 0;
+	WCHAR wsubkey[MAX_PATH] = {0};
+	char ansibuf[MAX_PATH] = {0};
 	int status = 0;
 
-	if (RegQueryValueEx(key, subkey, 0, &type, NULL, &bufsz)
+	mbstowcs(wsubkey,subkey,MAX_PATH);
+	if (RegQueryValueExW(key, wsubkey, 0, &type, NULL, &bufsz)
 		!= ERROR_MORE_DATA)
 		return -1;
 	if (!(buf = mm_malloc(bufsz)))
 		return -1;
 
-	if (RegQueryValueEx(key, subkey, 0, &type, (LPBYTE)buf, &bufsz)
+	if (RegQueryValueExW(key, wsubkey, 0, &type, (LPBYTE)buf, &bufsz)
 		== ERROR_SUCCESS && bufsz > 1) {
-		status = evdns_nameserver_ip_add_line(buf);
+		wcstombs(ansibuf,(wchar_t*)buf,MAX_PATH);
+		status = evdns_nameserver_ip_add_line(ansibuf);
 	}
 
 	mm_free(buf);
 	return status;
 }
 
-#define SERVICES_KEY "System\\CurrentControlSet\\Services\\"
-#define WIN_NS_9X_KEY  SERVICES_KEY "VxD\\MSTCP"
-#define WIN_NS_NT_KEY  SERVICES_KEY "Tcpip\\Parameters"
+#define SERVICES_KEY L"System\\CurrentControlSet\\Services\\"
+#define WIN_NS_9X_KEY  SERVICES_KEY L"VxD\\MSTCP"
+#define WIN_NS_NT_KEY  SERVICES_KEY L"Tcpip\\Parameters"
 
 static int
 load_nameservers_from_registry(void)
 {
 	int found = 0;
 	int r;
+	OSVERSIONINFO info = {0};
+	info.dwOSVersionInfoSize = sizeof (info);
+	GetVersionExW((LPOSVERSIONINFO)&info);
+
 #define TRY(k, name)													\
 	if (!found && config_nameserver_from_reg_key(k,name) == 0) {		\
 		log(EVDNS_LOG_DEBUG,"Found nameservers in %s/%s",#k,name);		\
@@ -3240,15 +3248,15 @@ load_nameservers_from_registry(void)
 			#k,#name);													\
 	}
 
-	if (((int)GetVersion()) > 0) { /* NT */
+	if (info.dwMajorVersion >= 5) { /* NT */
 		HKEY nt_key = 0, interfaces_key = 0;
 
-		if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0,
+		if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0,
 						 KEY_READ, &nt_key) != ERROR_SUCCESS) {
 			log(EVDNS_LOG_DEBUG,"Couldn't open nt key, %d",(int)GetLastError());
 			return -1;
 		}
-		r = RegOpenKeyEx(nt_key, "Interfaces", 0,
+		r = RegOpenKeyExW(nt_key, L"Interfaces", 0,
 						 KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS,
 						 &interfaces_key);
 		if (r != ERROR_SUCCESS) {
@@ -3263,7 +3271,7 @@ load_nameservers_from_registry(void)
 		RegCloseKey(nt_key);
 	} else {
 		HKEY win_key = 0;
-		if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_9X_KEY, 0,
+		if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, WIN_NS_9X_KEY, 0,
 						 KEY_READ, &win_key) != ERROR_SUCCESS) {
 			log(EVDNS_LOG_DEBUG, "Couldn't open registry key, %d", (int)GetLastError());
 			return -1;