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

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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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32
src/tun.c
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@@ -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;