[proxmark3-svn] / client / cmdlfpcf7931.c

//-----------------------------------------------------------------------------
// Copyright (C) 2012 Chalk <chalk.secu at gmail.com>
//               2015 Dake <thomas.cayrou at gmail.com>

// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// Low frequency PCF7931 commands
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <string.h>
#include "proxmark3.h"
#include "ui.h"
#include "util.h"
#include "graph.h"
#include "cmdparser.h"
#include "cmddata.h"
#include "cmdmain.h"
#include "cmdlf.h"
#include "cmdlfpcf7931.h"

static int CmdHelp(const char *Cmd);

#define PCF7931_DEFAULT_INITDELAY 17500
#define PCF7931_DEFAULT_OFFSET_WIDTH 0
#define PCF7931_DEFAULT_OFFSET_POSITION 0

// Default values - Configuration
struct pcf7931_config configPcf = {
	{0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},
	PCF7931_DEFAULT_INITDELAY,
	PCF7931_DEFAULT_OFFSET_WIDTH, 
	PCF7931_DEFAULT_OFFSET_POSITION
	};

// Resets the configuration settings to default values.
int pcf7931_resetConfig(){
	memset(configPcf.Pwd, 0xFF, sizeof(configPcf.Pwd) );
	configPcf.InitDelay = PCF7931_DEFAULT_INITDELAY;
	configPcf.OffsetWidth = PCF7931_DEFAULT_OFFSET_WIDTH; 
	configPcf.OffsetPosition = PCF7931_DEFAULT_OFFSET_POSITION; 
	return 0;
}

int pcf7931_printConfig(){
	PrintAndLog("Password (LSB first on bytes) : %s", sprint_hex( configPcf.Pwd, sizeof(configPcf.Pwd)));
	PrintAndLog("Tag initialization delay      : %d us", configPcf.InitDelay);
	PrintAndLog("Offset low pulses width       : %d us", configPcf.OffsetWidth);
	PrintAndLog("Offset low pulses position    : %d us", configPcf.OffsetPosition);
	return 0;
}

int usage_pcf7931_read(){
	PrintAndLog("Usage: lf pcf7931 read [h] ");
	PrintAndLog("This command tries to read a PCF7931 tag.");
	PrintAndLog("Options:");
	PrintAndLog("       h   This help");
	PrintAndLog("Examples:");
	PrintAndLog("      lf pcf7931 read");
	return 0;
}

int usage_pcf7931_write(){
	PrintAndLog("Usage: lf pcf7931 write [h] <block address> <byte address> <data>");
	PrintAndLog("This command tries to write a PCF7931 tag.");
	PrintAndLog("Options:");
	PrintAndLog("       h          This help");
	PrintAndLog("       blockaddress   Block to save [0-7]");
	PrintAndLog("       byteaddress    Index of byte inside block to write [0-15]");
	PrintAndLog("       data           one byte of data (hex)");
	PrintAndLog("Examples:");
	PrintAndLog("      lf pcf7931 write 2 1 FF");
	return 0;
}

int usage_pcf7931_config(){
	PrintAndLog("Usage: lf pcf7931 config [h] [r] <pwd> <delay> <offset width> <offset position>");
	PrintAndLog("This command tries to set the configuration used with PCF7931 commands");
	PrintAndLog("The time offsets could be useful to correct slew rate generated by the antenna");
	PrintAndLog("Caling without some parameter will print the current configuration.");
	PrintAndLog("Options:");
	PrintAndLog("       h       This help");
	PrintAndLog("       r       Reset configuration to default values");
	PrintAndLog("       pwd     Password, hex, 7bytes, LSB-order");
	PrintAndLog("       delay   Tag initialization delay (in us) decimal");
	PrintAndLog("       offset  Low pulses width (in us) decimal");
	PrintAndLog("       offset  Low pulses position (in us) decimal");  
	PrintAndLog("Examples:");
	PrintAndLog("      lf pcf7931 config");
	PrintAndLog("      lf pcf7931 config r");
	PrintAndLog("      lf pcf7931 config 11223344556677 20000");
	PrintAndLog("      lf pcf7931 config 11223344556677 17500 -10 30");
	return 0;
}

int CmdLFPCF7931Read(const char *Cmd){  

	uint8_t ctmp = param_getchar(Cmd, 0);
	if ( ctmp == 'H' || ctmp == 'h' ) return usage_pcf7931_read();

	UsbCommand resp;
	UsbCommand c = {CMD_PCF7931_READ, {0, 0, 0}};
	clearCommandBuffer();
	SendCommand(&c);
	if ( !WaitForResponseTimeout(CMD_ACK, &resp, 2500) ) {
		PrintAndLog("command execution time out");
		return 1;
	}
	return 0;
}

int CmdLFPCF7931Config(const char *Cmd){ 

	uint8_t ctmp = param_getchar(Cmd, 0);
	if ( ctmp == 0) return pcf7931_printConfig();
	if ( ctmp == 'H' || ctmp == 'h' ) return usage_pcf7931_config();
	if ( ctmp == 'R' || ctmp == 'r' ) return pcf7931_resetConfig(); 

	if ( param_gethex(Cmd, 0, configPcf.Pwd, 14) ) return usage_pcf7931_config();

	configPcf.InitDelay = (param_get32ex(Cmd,1,0,10) & 0xFFFF);
	configPcf.OffsetWidth = (int)(param_get32ex(Cmd,2,0,10) & 0xFFFF);
	configPcf.OffsetPosition = (int)(param_get32ex(Cmd,3,0,10) & 0xFFFF);

	pcf7931_printConfig();
	return 0;
}

int CmdLFPCF7931Write(const char *Cmd){

	uint8_t ctmp = param_getchar(Cmd, 0);
	if (strlen(Cmd) < 1 || ctmp == 'h' || ctmp == 'H') return usage_pcf7931_write();  

	uint8_t block = 0, bytepos = 0, data = 0;
	
	if ( param_getdec(Cmd, 0, &block) ) return usage_pcf7931_write();
	if ( param_getdec(Cmd, 1, &bytepos) ) return usage_pcf7931_write();
	
	if ( (block > 7) || (bytepos > 15) ) return usage_pcf7931_write();

	data  = param_get8ex(Cmd, 2, 0, 16);
	
	PrintAndLog("Writing block: %d", block);
	PrintAndLog("          pos: %d", bytepos);
	PrintAndLog("         data: 0x%02X", data);

	UsbCommand c = {CMD_PCF7931_WRITE, { block, bytepos, data} };
	memcpy(c.d.asDwords, configPcf.Pwd, sizeof(configPcf.Pwd) );
	  c.d.asDwords[7] = (configPcf.OffsetWidth + 128);
	  c.d.asDwords[8] = (configPcf.OffsetPosition + 128);
	  c.d.asDwords[9] = configPcf.InitDelay;

	clearCommandBuffer();
	SendCommand(&c);
	//no ack?
	return 0;
}

static command_t CommandTable[] = 
{
	{"help",   CmdHelp,            1, "This help"},
	{"read",   CmdLFPCF7931Read,   0, "Read content of a PCF7931 transponder"},
	{"write",  CmdLFPCF7931Write,  0, "Write data on a PCF7931 transponder."},
	{"config", CmdLFPCF7931Config, 1, "Configure the password, the tags initialization delay and time offsets (optional)"},
	{NULL,     NULL,               0, NULL}
};

int CmdLFPCF7931(const char *Cmd)
{
	CmdsParse(CommandTable, Cmd);
	return 0;
}

int CmdHelp(const char *Cmd)
{
	CmdsHelp(CommandTable);
	return 0;
}
Commit	Line	Data
54a942b0	1	//-----------------------------------------------------------------------------
54a942b0	2	// Copyright (C) 2012 Chalk <chalk.secu at gmail.com>
dc4300ba D	3	// 2015 Dake <thomas.cayrou at gmail.com>
dc4300ba D	4
54a942b0	5	// This code is licensed to you under the terms of the GNU GPL, version 2 or,
	6	// at your option, any later version. See the LICENSE.txt file for the text of
	7	// the license.
	8	//-----------------------------------------------------------------------------
	9	// Low frequency PCF7931 commands
	10	//-----------------------------------------------------------------------------
54a942b0	11	#include <stdio.h>
54a942b0	12	#include <string.h>
54a942b0	13	#include "proxmark3.h"
54a942b0	14	#include "ui.h"
d10e08ae	15	#include "util.h"
54a942b0	16	#include "graph.h"
	17	#include "cmdparser.h"
	18	#include "cmddata.h"
	19	#include "cmdmain.h"
	20	#include "cmdlf.h"
	21	#include "cmdlfpcf7931.h"
	22
	23	static int CmdHelp(const char *Cmd);
	24
d10e08ae	25	#define PCF7931_DEFAULT_INITDELAY 17500
	26	#define PCF7931_DEFAULT_OFFSET_WIDTH 0
	27	#define PCF7931_DEFAULT_OFFSET_POSITION 0
	28
	29	// Default values - Configuration
	30	struct pcf7931_config configPcf = {
	31	{0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},
	32	PCF7931_DEFAULT_INITDELAY,
	33	PCF7931_DEFAULT_OFFSET_WIDTH,
	34	PCF7931_DEFAULT_OFFSET_POSITION
	35	};
	36
	37	// Resets the configuration settings to default values.
	38	int pcf7931_resetConfig(){
	39	memset(configPcf.Pwd, 0xFF, sizeof(configPcf.Pwd) );
	40	configPcf.InitDelay = PCF7931_DEFAULT_INITDELAY;
	41	configPcf.OffsetWidth = PCF7931_DEFAULT_OFFSET_WIDTH;
	42	configPcf.OffsetPosition = PCF7931_DEFAULT_OFFSET_POSITION;
	43	return 0;
	44	}
dc4300ba	45
d10e08ae	46	int pcf7931_printConfig(){
	47	PrintAndLog("Password (LSB first on bytes) : %s", sprint_hex( configPcf.Pwd, sizeof(configPcf.Pwd)));
	48	PrintAndLog("Tag initialization delay : %d us", configPcf.InitDelay);
	49	PrintAndLog("Offset low pulses width : %d us", configPcf.OffsetWidth);
	50	PrintAndLog("Offset low pulses position : %d us", configPcf.OffsetPosition);
	51	return 0;
	52	}
	53
	54	int usage_pcf7931_read(){
	55	PrintAndLog("Usage: lf pcf7931 read [h] ");
	56	PrintAndLog("This command tries to read a PCF7931 tag.");
	57	PrintAndLog("Options:");
	58	PrintAndLog(" h This help");
	59	PrintAndLog("Examples:");
	60	PrintAndLog(" lf pcf7931 read");
	61	return 0;
	62	}
	63
	64	int usage_pcf7931_write(){
	65	PrintAndLog("Usage: lf pcf7931 write [h] <block address> <byte address> <data>");
	66	PrintAndLog("This command tries to write a PCF7931 tag.");
	67	PrintAndLog("Options:");
	68	PrintAndLog(" h This help");
	69	PrintAndLog(" blockaddress Block to save [0-7]");
7cfc777b	70	PrintAndLog(" byteaddress Index of byte inside block to write [0-15]");
d10e08ae	71	PrintAndLog(" data one byte of data (hex)");
	72	PrintAndLog("Examples:");
	73	PrintAndLog(" lf pcf7931 write 2 1 FF");
	74	return 0;
54a942b0	75	}
54a942b0	76
d10e08ae	77	int usage_pcf7931_config(){
	78	PrintAndLog("Usage: lf pcf7931 config [h] [r] <pwd> <delay> <offset width> <offset position>");
	79	PrintAndLog("This command tries to set the configuration used with PCF7931 commands");
	80	PrintAndLog("The time offsets could be useful to correct slew rate generated by the antenna");
	81	PrintAndLog("Caling without some parameter will print the current configuration.");
	82	PrintAndLog("Options:");
	83	PrintAndLog(" h This help");
	84	PrintAndLog(" r Reset configuration to default values");
	85	PrintAndLog(" pwd Password, hex, 7bytes, LSB-order");
	86	PrintAndLog(" delay Tag initialization delay (in us) decimal");
	87	PrintAndLog(" offset Low pulses width (in us) decimal");
	88	PrintAndLog(" offset Low pulses position (in us) decimal");
	89	PrintAndLog("Examples:");
	90	PrintAndLog(" lf pcf7931 config");
	91	PrintAndLog(" lf pcf7931 config r");
	92	PrintAndLog(" lf pcf7931 config 11223344556677 20000");
	93	PrintAndLog(" lf pcf7931 config 11223344556677 17500 -10 30");
	94	return 0;
dc4300ba D	95	}
dc4300ba D	96
d10e08ae	97	int CmdLFPCF7931Read(const char *Cmd){
dc4300ba	98
d10e08ae	99	uint8_t ctmp = param_getchar(Cmd, 0);
d10e08ae	100	if ( ctmp == 'H' \|\| ctmp == 'h' ) return usage_pcf7931_read();
dc4300ba	101
d10e08ae	102	UsbCommand resp;
	103	UsbCommand c = {CMD_PCF7931_READ, {0, 0, 0}};
	104	clearCommandBuffer();
	105	SendCommand(&c);
	106	if ( !WaitForResponseTimeout(CMD_ACK, &resp, 2500) ) {
	107	PrintAndLog("command execution time out");
	108	return 1;
	109	}
	110	return 0;
dc4300ba D	111	}
dc4300ba D	112
d10e08ae	113	int CmdLFPCF7931Config(const char *Cmd){
	114
	115	uint8_t ctmp = param_getchar(Cmd, 0);
	116	if ( ctmp == 0) return pcf7931_printConfig();
	117	if ( ctmp == 'H' \|\| ctmp == 'h' ) return usage_pcf7931_config();
	118	if ( ctmp == 'R' \|\| ctmp == 'r' ) return pcf7931_resetConfig();
	119
	120	if ( param_gethex(Cmd, 0, configPcf.Pwd, 14) ) return usage_pcf7931_config();
	121
	122	configPcf.InitDelay = (param_get32ex(Cmd,1,0,10) & 0xFFFF);
	123	configPcf.OffsetWidth = (int)(param_get32ex(Cmd,2,0,10) & 0xFFFF);
	124	configPcf.OffsetPosition = (int)(param_get32ex(Cmd,3,0,10) & 0xFFFF);
	125
	126	pcf7931_printConfig();
	127	return 0;
	128	}
	129
	130	int CmdLFPCF7931Write(const char *Cmd){
	131
	132	uint8_t ctmp = param_getchar(Cmd, 0);
	133	if (strlen(Cmd) < 1 \|\| ctmp == 'h' \|\| ctmp == 'H') return usage_pcf7931_write();
	134
	135	uint8_t block = 0, bytepos = 0, data = 0;
	136
	137	if ( param_getdec(Cmd, 0, &block) ) return usage_pcf7931_write();
	138	if ( param_getdec(Cmd, 1, &bytepos) ) return usage_pcf7931_write();
	139
59b5b7e1	140	if ( (block > 7) \|\| (bytepos > 15) ) return usage_pcf7931_write();
d10e08ae	141
	142	data = param_get8ex(Cmd, 2, 0, 16);
	143
	144	PrintAndLog("Writing block: %d", block);
	145	PrintAndLog(" pos: %d", bytepos);
	146	PrintAndLog(" data: 0x%02X", data);
	147
	148	UsbCommand c = {CMD_PCF7931_WRITE, { block, bytepos, data} };
	149	memcpy(c.d.asDwords, configPcf.Pwd, sizeof(configPcf.Pwd) );
	150	c.d.asDwords[7] = (configPcf.OffsetWidth + 128);
	151	c.d.asDwords[8] = (configPcf.OffsetPosition + 128);
	152	c.d.asDwords[9] = configPcf.InitDelay;
	153
	154	clearCommandBuffer();
	155	SendCommand(&c);
	156	//no ack?
	157	return 0;
	158	}
dc4300ba	159
54a942b0	160	static command_t CommandTable[] =
54a942b0	161	{
d10e08ae	162	{"help", CmdHelp, 1, "This help"},
	163	{"read", CmdLFPCF7931Read, 0, "Read content of a PCF7931 transponder"},
	164	{"write", CmdLFPCF7931Write, 0, "Write data on a PCF7931 transponder."},
	165	{"config", CmdLFPCF7931Config, 1, "Configure the password, the tags initialization delay and time offsets (optional)"},
	166	{NULL, NULL, 0, NULL}
54a942b0	167	};
	168
	169	int CmdLFPCF7931(const char *Cmd)
	170	{
d10e08ae	171	CmdsParse(CommandTable, Cmd);
d10e08ae	172	return 0;
54a942b0	173	}
	174
	175	int CmdHelp(const char *Cmd)
	176	{
d10e08ae	177	CmdsHelp(CommandTable);
d10e08ae	178	return 0;
54a942b0	179	}