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https://github.com/yarrick/iodine.git
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#43 Now works on windows, if you set your ip correctly and use a /30 netmask
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parent
85adeb7eb4
commit
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94
src/tun.c
94
src/tun.c
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@ -30,6 +30,7 @@
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#include "windows.h"
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HANDLE dev_handle;
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struct tun_data data;
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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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@ -224,11 +225,43 @@ next:
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RegCloseKey(adapter_key);
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}
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DWORD WINAPI tun_reader(LPVOID arg)
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{
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struct tun_data *tun = arg;
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char buf[64*1024];
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int len;
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int res;
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OVERLAPPED olpd;
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int sock;
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sock = open_dns(0, INADDR_ANY);
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olpd.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
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while(TRUE) {
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olpd.Offset = 0;
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olpd.OffsetHigh = 0;
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res = ReadFile(tun->tun, buf, sizeof(buf), (LPDWORD) &len, &olpd);
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if (!res) {
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WaitForSingleObject(olpd.hEvent, INFINITE);
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res = GetOverlappedResult(dev_handle, &olpd, (LPDWORD) &len, FALSE);
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printf("Read %d bytes!\n", len);
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res = sendto(sock, buf, len, 0, (struct sockaddr*) &(tun->addr),
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sizeof(struct sockaddr_in));
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printf("send done %d, %02X %02X %02X\n", res, buf[0], buf[1], buf[2]);
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}
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}
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return 0;
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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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char adapter[256];
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char tapfile[512];
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int tunfd;
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in_addr_t local;
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memset(adapter, 0, sizeof(adapter));
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get_device(adapter, sizeof(adapter));
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@ -238,13 +271,29 @@ open_tun(const char *tun_device)
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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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dev_handle = CreateFile(tapfile, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, NULL);
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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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/* Use a UDP connection to forward packets from tun,
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* so we can still use select() in main code.
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* A thread does blocking reads on tun device and
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* sends data as udp to this socket */
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local = htonl(0x7f000001); /* 127.0.0.1 */
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tunfd = open_dns(55353, local);
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data.tun = dev_handle;
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memset(&(data.addr), 0, sizeof(data.addr));
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data.addr.sin_family = AF_INET;
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data.addr.sin_port = htons(55353);
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data.addr.sin_addr.s_addr = local;
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CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)tun_reader, &data, 0, NULL);
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return tunfd;
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}
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#endif
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@ -283,10 +332,19 @@ write_tun(int tun_fd, char *data, size_t len)
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#else /* WINDOWS32 */
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{
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DWORD written;
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WriteFile((HANDLE) tun_fd, data, len, &written, NULL);
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if (written != len) {
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warn("write_tun");
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return 1;
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DWORD res;
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OVERLAPPED olpd;
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olpd.Offset = 0;
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olpd.OffsetHigh = 0;
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olpd.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
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res = WriteFile(dev_handle, data, len, &written, &olpd);
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if (!res && GetLastError() == ERROR_IO_PENDING) {
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WaitForSingleObject(olpd.hEvent, INFINITE);
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res = GetOverlappedResult(dev_handle, &olpd, &written, FALSE);
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if (written != len) {
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return -1;
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}
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}
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}
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#endif
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@ -296,12 +354,28 @@ write_tun(int tun_fd, char *data, size_t len)
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ssize_t
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read_tun(int tun_fd, char *buf, size_t len)
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{
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#if defined (FREEBSD) || defined (DARWIN) || defined(NETBSD) || defined(WINDOWS32)
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#ifndef WINDOWS32
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#if defined (FREEBSD) || defined (DARWIN) || defined(NETBSD)
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/* FreeBSD/Darwin/NetBSD has no header */
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return READ(tun_fd, buf + 4, len - 4) + 4;
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int bytes;
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bytes = read(tun_fd, buf + 4, len - 4);
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if (bytes < 0) {
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return bytes;
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} else {
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return bytes + 4;
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}
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#else /* !FREEBSD */
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return READ(tun_fd, buf, len);
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return read(tun_fd, buf, len);
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#endif /* !FREEBSD */
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#else /* !WINDOWS32 */
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int bytes;
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bytes = RECV(tun_fd, buf + 4, len, 0);
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if (bytes < 0) {
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return bytes;
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} else {
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return bytes + 4;
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}
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#endif
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}
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int
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@ -358,6 +432,8 @@ tun_setip(const char *ip, int netbits)
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DWORD len;
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BOOL res;
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printf("Given IP %s\n", ip);
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/* Set device as connected */
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status = 1;
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res =DeviceIoControl(dev_handle, TAP_IOCTL_SET_MEDIA_STATUS, &status,
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@ -80,5 +80,11 @@ struct ip
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struct in_addr ip_src, ip_dst; /* source and dest address */
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};
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DWORD WINAPI tun_reader(LPVOID arg);
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struct tun_data {
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HANDLE tun;
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int sock;
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struct sockaddr_in addr;
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};
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#endif
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