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Any number of TAP32 interfaces supported, use -d to choose. #46

This commit is contained in:
Erik Ekman 2009-06-14 20:12:35 +00:00 committed by Erik Ekman
parent e59aaa523e
commit 8fc8ce587c
3 changed files with 28 additions and 16 deletions
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1
CHANGELOG
View File

@ -8,6 +8,7 @@ CHANGES:
20xx-xx-xx: x.y.z
- Fixed tunnel not working on Windows.
- Any device name is now supported on Windows, fixes #47.
- Multiple installed TAP32 interfaces are now supported, fixes #46.
2009-06-01: 0.5.2 "WifiFree"
- Fixed client segfault on OS X, #57

11
README-win32.txt
View File

@ -13,14 +13,14 @@ Extra README file for Win32 related stuff
choose OpenVPN 2.0.9 Windows Installer, when installing you can
select to install only the TAP driver.
2. Have one TAP32 interface installed
2. Make sure the interface you want to use does not have a default gateway set.
Use -d to specify the interface, use double quotes to include spaces, example
iodine.exe -d "Local Area Connection 4" abc.ab
3. Make sure the interface does not have a default gateway set
4. Run iodine/iodined as normal (see the main README file).
3. Run iodine/iodined as normal (see the main README file).
You may have to run it as administrator depending on user privileges.
5. Enjoy!
4. Enjoy!
== Building on Windows:
@ -47,7 +47,6 @@ cross-compile.
== Results of crappy Win32 API:
The following fixable limitations apply:
- Exactly one TAP32 interface must be installed
- Server cannot read packet destination address
The following (probably) un-fixable limitations apply:

32
src/tun.c
View File

@ -32,6 +32,8 @@
HANDLE dev_handle;
struct tun_data data;
static void get_name(char *ifname, int namelen, char *dev_name);
#define TAP_CONTROL_CODE(request,method) CTL_CODE(FILE_DEVICE_UNKNOWN, request, method, FILE_ANY_ACCESS)
#define TAP_IOCTL_CONFIG_TUN TAP_CONTROL_CODE(10, METHOD_BUFFERED)
#define TAP_IOCTL_SET_MEDIA_STATUS TAP_CONTROL_CODE(6, METHOD_BUFFERED)
@ -160,7 +162,7 @@ open_tun(const char *tun_device)
#endif /* !LINUX */
#else /* WINDOWS32 */
static void
get_device(char *device, int device_len)
get_device(char *device, int device_len, const char *wanted_dev)
{
LONG status;
HKEY adapter_key;
@ -216,7 +218,18 @@ get_device(char *device, int device_len)
if (status != ERROR_SUCCESS || datatype != REG_SZ) {
warnx("Error reading registry key %s\\%s on TAP device", unit, iid_string);
} else {
/* Done getting name of TAP device */
/* Done getting GUID of TAP device,
* now check if the name is the requested one */
if (wanted_dev) {
char name[250];
get_name(name, sizeof(name), device);
if (strncmp(name, wanted_dev, strlen(wanted_dev))) {
/* Skip if name mismatch */
goto next;
}
}
/* Get the if name */
get_name(if_name, sizeof(if_name), device);
RegCloseKey(device_key);
return;
}
@ -229,7 +242,7 @@ next:
}
static void
get_name(char *dev_name)
get_name(char *ifname, int namelen, char *dev_name)
{
char path[256];
char name_str[256] = "Name";
@ -238,18 +251,17 @@ get_name(char *dev_name)
DWORD len;
DWORD datatype;
memset(if_name, 0, sizeof(if_name));
memset(ifname, 0, namelen);
snprintf(path, sizeof(path), NETWORK_KEY "\\%s\\Connection", dev_name);
status = RegOpenKeyEx(HKEY_LOCAL_MACHINE, path, 0, KEY_READ, &conn_key);
printf("%s ?? %s\n", path, dev_name);
if (status != ERROR_SUCCESS) {
fprintf(stderr, "Could not look up name of interface %s: error opening key\n", dev_name);
RegCloseKey(conn_key);
return;
}
len = sizeof(if_name);
status = RegQueryValueEx(conn_key, name_str, NULL, &datatype, (LPBYTE)if_name, &len);
len = namelen;
status = RegQueryValueEx(conn_key, name_str, NULL, &datatype, (LPBYTE)ifname, &len);
if (status != ERROR_SUCCESS || datatype != REG_SZ) {
fprintf(stderr, "Could not look up name of interface %s: error reading value\n", dev_name);
RegCloseKey(conn_key);
@ -295,8 +307,8 @@ open_tun(const char *tun_device)
in_addr_t local;
memset(adapter, 0, sizeof(adapter));
get_device(adapter, sizeof(adapter));
get_name(adapter); /* Copies interface 'human name' to if_name */
get_device(adapter, sizeof(adapter), tun_device);
get_name(if_name, sizeof(if_name), adapter);
if (strlen(adapter) == 0 || strlen(if_name) == 0) {
warnx("No TAP adapters found. See README-win32.txt for help.\n");
@ -304,7 +316,7 @@ open_tun(const char *tun_device)
}
snprintf(tapfile, sizeof(tapfile), "%s%s.tap", TAP_DEVICE_SPACE, adapter);
fprintf(stderr, "Opening device %s\n", tapfile);
fprintf(stderr, "Opening device %s\n", if_name);
dev_handle = CreateFile(tapfile, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, NULL);
if (dev_handle == INVALID_HANDLE_VALUE) {
return -1;