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Opening of device done, and it is set as active
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parent
0c4c529142
commit
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112
src/tun.c
112
src/tun.c
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@ -26,21 +26,33 @@
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#ifdef WINDOWS32
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#include <winsock.h>
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#include <winioctl.h>
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#include "windows.h"
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HANDLE dev_handle;
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#define TAP_CONTROL_CODE(request,method) CTL_CODE(FILE_DEVICE_UNKNOWN, request, method, FILE_ANY_ACCESS)
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#define TAP_IOCTL_CONFIG_TUN TAP_CONTROL_CODE(10, METHOD_BUFFERED)
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#define TAP_IOCTL_SET_MEDIA_STATUS TAP_CONTROL_CODE(6, METHOD_BUFFERED)
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#define TAP_ADAPTER_KEY "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}"
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#define TAP_DEVICE_SPACE "\\\\.\\Global\\"
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#define TAP_COMPONENT_ID "tap0801"
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#define KEY_COMPONENT_ID "ComponentId"
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#define NET_CFG_INST_ID "NetCfgInstanceId"
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#else
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#include <err.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#define TUN_MAX_TRY 50
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char if_name[50];
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#endif
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#include "plibc.h"
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#include "tun.h"
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#include "common.h"
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#define TUN_MAX_TRY 50
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char if_name[50];
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#ifndef WINDOWS32
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#ifdef LINUX
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@ -144,10 +156,95 @@ open_tun(const char *tun_device)
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#endif /* !LINUX */
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#else /* WINDOWS32 */
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static void
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get_device(char *device, int device_len)
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{
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LONG status;
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HKEY adapter_key;
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int index;
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index = 0;
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status = RegOpenKeyEx(HKEY_LOCAL_MACHINE, TAP_ADAPTER_KEY, 0, KEY_READ, &adapter_key);
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if (status != ERROR_SUCCESS) {
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warnx("Error opening registry key " TAP_ADAPTER_KEY );
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return;
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}
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while (TRUE) {
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char name[256];
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char unit[256];
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char component[256];
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char cid_string[256] = KEY_COMPONENT_ID;
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HKEY device_key;
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DWORD datatype;
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DWORD len;
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/* Iterate through all adapter of this kind */
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len = sizeof(name);
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status = RegEnumKeyEx(adapter_key, index, name, &len, NULL, NULL, NULL, NULL);
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if (status == ERROR_NO_MORE_ITEMS) {
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break;
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} else if (status != ERROR_SUCCESS) {
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warnx("Error enumerating subkeys of registry key " TAP_ADAPTER_KEY );
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break;
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}
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snprintf(unit, sizeof(unit), TAP_ADAPTER_KEY "\\%s", name);
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status = RegOpenKeyEx(HKEY_LOCAL_MACHINE, unit, 0, KEY_READ, &device_key);
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if (status != ERROR_SUCCESS) {
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warnx("Error opening registry key %s", unit);
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goto next;
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}
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/* Check component id */
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len = sizeof(component);
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status = RegQueryValueEx(device_key, cid_string, NULL, &datatype, (LPBYTE)component, &len);
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if (status != ERROR_SUCCESS || datatype != REG_SZ) {
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goto next;
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}
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if (strncmp(TAP_COMPONENT_ID, component, strlen(TAP_COMPONENT_ID)) == 0) {
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/* We found a TAP32 device, get its NetCfgInstanceId */
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char iid_string[256] = NET_CFG_INST_ID;
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status = RegQueryValueEx(device_key, iid_string, NULL, &datatype, (LPBYTE) device, (DWORD *) &device_len);
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if (status != ERROR_SUCCESS || datatype != REG_SZ) {
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warnx("Error reading registry key %s\\%s on TAP device", unit, iid_string);
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} else {
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/* Done getting name of TAP device */
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RegCloseKey(device_key);
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return;
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}
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}
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next:
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RegCloseKey(device_key);
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index++;
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}
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RegCloseKey(adapter_key);
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}
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int
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open_tun(const char *tun_device)
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{
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return 10;
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char adapter[256];
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char tapfile[512];
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memset(adapter, 0, sizeof(adapter));
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get_device(adapter, sizeof(adapter));
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if (strlen(adapter) == 0)
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return -1;
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snprintf(tapfile, sizeof(tapfile), "%s%s.tap", TAP_DEVICE_SPACE, adapter);
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printf("Opening device %s\n", tapfile);
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dev_handle = CreateFile(tapfile, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0);
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if (dev_handle == INVALID_HANDLE_VALUE) {
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return -1;
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}
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printf("Opened handle: %p\n", dev_handle);
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return (int) dev_handle;
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}
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#endif
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@ -242,7 +339,12 @@ tun_setip(const char *ip, int netbits)
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return 1;
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#else /* WINDOWS32 */
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DWORD status;
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DWORD len;
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/* Set device as connected */
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status = 1;
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DeviceIoControl(dev_handle, TAP_IOCTL_SET_MEDIA_STATUS, &status, sizeof(status), &status, sizeof(status), &len, NULL);
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return 0;
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#endif
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}
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