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1 /*

2 * Proxmark send and receive commands

3 *

6 *

7 * Redistribution and use in source and binary forms, with or without

8 * modification, are permitted provided that the following conditions are met:

9 * 1. Redistributions of source code must retain the above copyright

10 * notice, this list of conditions and the following disclaimer.

11 * 2. Redistributions in binary form must reproduce the above copyright

12 * notice, this list of conditions and the following disclaimer in the

13 * documentation and/or other materials provided with the distribution.

14 * 3. Neither the name of the copyright holders nor the

15 * names of its contributors may be used to endorse or promote products

16 * derived from this software without specific prior written permission.

17 *

18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY

19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY

22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

28 *

29 * @file cmd.c

30 * @brief

31 */

33 #include "cmd.h"

34 #include "string.h"

35 #include "proxmark3.h"

 bool cmd_receive(UsbCommand* cmd) {

39 // Check if there is a usb packet available

   if (!usb_poll()) return false;

42 // Try to retrieve the available command frame

   size_t rxlen = usb_read((byte_t*)cmd,sizeof(UsbCommand));

45 // Check if the transfer was complete

   if (rxlen != sizeof(UsbCommand)) return false;

48 // Received command successfully

49 return true;

50 }

 bool cmd_send(uint32_t cmd, uint32_t arg0, uint32_t arg1, uint32_t arg2, void* data, size_t len) {

53 UsbCommand txcmd;

   for (size_t i=0; i<sizeof(UsbCommand); i++) {

     ((byte_t*)&txcmd)[i] = 0x00;

57 }

59 // Compose the outgoing command frame

60 txcmd.cmd = cmd;

   txcmd.arg[0] = arg0;

   txcmd.arg[1] = arg1;  

   txcmd.arg[2] = arg2;

65 // Add the (optional) content to the frame, with a maximum size of USB_CMD_DATA_SIZE

66 if (data && len) {

     len = MIN(len,USB_CMD_DATA_SIZE);

     for (size_t i=0; i<len; i++) {

       txcmd.d.asBytes[i] = ((byte_t*)data)[i];

70 }

71 }

73 // Send frame and make sure all bytes are transmitted

   if (usb_write((byte_t*)&txcmd,sizeof(UsbCommand)) != 0) return false;

76 return true;

77 }