proxmark3/common/cmd.c

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/*
* Proxmark send and receive commands
*
* Copyright (c) 2012, Roel Verdult
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @file cmd.c
* @brief
*/
#include "cmd.h"
#ifdef WITH_FPC_HOST
// "Session" flag, to tell via which interface next msgs should be sent: USB or FPC USART
bool reply_via_fpc = 0;
extern void Dbprintf(const char *fmt, ...);
#define Dbprintf_usb(...) {\
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reply_via_fpc = 0;\
Dbprintf(__VA_ARGS__);\
reply_via_fpc = 1;}
#endif
uint8_t cmd_send(uint64_t cmd, uint64_t arg0, uint64_t arg1, uint64_t arg2, void *data, size_t len) {
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UsbCommand txcmd;
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for (size_t i = 0; i < sizeof(UsbCommand); i++)
((uint8_t *)&txcmd)[i] = 0x00;
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// Compose the outgoing command frame
txcmd.cmd = cmd;
txcmd.arg[0] = arg0;
txcmd.arg[1] = arg1;
txcmd.arg[2] = arg2;
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// Add the (optional) content to the frame, with a maximum size of USB_CMD_DATA_SIZE
if (data && len) {
len = MIN(len, USB_CMD_DATA_SIZE);
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for (size_t i = 0; i < len; i++) {
txcmd.d.asBytes[i] = ((uint8_t *)data)[i];
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}
}
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uint32_t sendlen = 0;
// Send frame and make sure all bytes are transmitted
#ifdef WITH_FPC_HOST
if (reply_via_fpc) {
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sendlen = usart_writebuffer((uint8_t *)&txcmd, sizeof(UsbCommand));
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// Dbprintf_usb("Sent %i bytes over usart", len);
} else {
sendlen = usb_write((uint8_t *)&txcmd, sizeof(UsbCommand));
}
#else
sendlen = usb_write((uint8_t *)&txcmd, sizeof(UsbCommand));
#endif
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return sendlen;
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}