X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/e98572a1e2dde603f31cc06f330c6abd295139de..547595784facfc9565ca08af18d9bead6bfac31b:/client/cmdlfpcf7931.c diff --git a/client/cmdlfpcf7931.c b/client/cmdlfpcf7931.c index 9a40dcd8..5cc576fe 100644 --- a/client/cmdlfpcf7931.c +++ b/client/cmdlfpcf7931.c @@ -21,144 +21,157 @@ static int CmdHelp(const char *Cmd); -struct pcf7931_config configPcf = {{0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},17500,{0,0}}; +#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 usage_pcf7931_read() -{ +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("Options:"); + PrintAndLog(" h This help"); PrintAndLog("Examples:"); PrintAndLog(" lf pcf7931 read"); return 0; } -int CmdLFPCF7931Read(const char *Cmd) -{ - uint8_t cmdp = 0; - - if (param_getchar(Cmd, cmdp) == 'H' || param_getchar(Cmd, cmdp) == 'h') - return usage_pcf7931_read(); - - UsbCommand c = {CMD_PCF7931_READ}; +int usage_pcf7931_write(){ + PrintAndLog("Usage: lf pcf7931 write [h] "); + 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] "); + 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); - UsbCommand resp; - WaitForResponse(CMD_ACK,&resp); + if ( !WaitForResponseTimeout(CMD_ACK, &resp, 2500) ) { + PrintAndLog("command execution time out"); + return 1; + } return 0; } -int CmdLFPCF7931Config(const char *Cmd) -{ - int res = 0; - // res = sscanf(Cmd, - // "%02x %02x %hu %hu %hu %hu %hu %hhu %hd %hd", - // &configPcf.password[0], - // &configPcf.password[1], - // &configPcf.password[2], - // &configPcf.password[3], - // &configPcf.password[4], - // &configPcf.password[5], - // &configPcf.password[6], - // &configPcf.init_delay, - // &configPcf.offset[0], - // &configPcf.offset[1]); - - if (res >= 7 || res < 1){ - if(res == 7) configPcf.init_delay = 17500; //default value - - if(res<=8){ - configPcf.offset[0] = 0; //default value - configPcf.offset[1] = 0; //default value - } - - if(res < 1){ - PrintAndLog("Usage: [...] "); - PrintAndLog("The time offsets could be usefull to correct slew rate generated by the antenna."); - } - - PrintAndLog("Current configuration :"); - PrintAndLog("Password (LSB first on each byte) : %02x %02x %02x %02x %02x %02x %02x", configPcf.password[0], configPcf.password[1], configPcf.password[2], configPcf.password[3], configPcf.password[4], configPcf.password[5], configPcf.password[6]); - PrintAndLog("Tag initialization delay : %d us", configPcf.init_delay); - PrintAndLog("Offsets : %d us on the low pulses width, %d us on the low pulses positions", configPcf.offset[0], configPcf.offset[1]); - - return 0; - } - - //default values - configPcf.password[0] = 0xFF; - configPcf.password[1] = 0xFF; - configPcf.password[2] = 0xFF; - configPcf.password[3] = 0xFF; - configPcf.password[4] = 0xFF; - configPcf.password[5] = 0xFF; - configPcf.password[6] = 0xFF; - - configPcf.init_delay = 17500; - configPcf.offset[0] = 0; - configPcf.offset[1] = 0; - - PrintAndLog("Incorrect format"); - PrintAndLog("Examples of right usage : lf pcf7931 config 11 22 33 44 55 66 77 20000"); - PrintAndLog(" lf pcf7931 config FF FF FF FF FF FF FF 17500 -10 30"); - 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) -{ - UsbCommand c = {CMD_PCF7931_WRITE}; - - int res = 0; - res = sscanf(Cmd, "%" SCNu64 " %" SCNu64 " %" SCNu64 , &c.arg[0], &c.arg[1], &c.arg[2]); - - if(res < 1) { - PrintAndLog("Please specify the block address in hex"); - return 1; - } - if (res == 1){ - PrintAndLog("Please specify the byte address in hex"); - return 2; - } - if(res == 2) { - PrintAndLog("Please specify the data in hex (1 byte)"); - return 3; - } - if(res == 3) { - - memcpy(c.d.asDwords, configPcf.password, 7); +int CmdLFPCF7931Write(const char *Cmd){ - c.d.asDwords[7] = (configPcf.offset[0]+128); - c.d.asDwords[8] = (configPcf.offset[1]+128); - c.d.asDwords[9] = configPcf.init_delay; + uint8_t ctmp = param_getchar(Cmd, 0); + if (strlen(Cmd) < 1 || ctmp == 'h' || ctmp == 'H') return usage_pcf7931_write(); - clearCommandBuffer(); - SendCommand(&c); - return 0; - } + 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(); - PrintAndLog("INCORRECT FORMAT"); - return 0; -} + 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, 1, "Read content of a PCF7931 transponder"}, - {"write", CmdLFPCF7931Write, 1, "Write data on a PCF7931 transponder. Usage : lf pcf7931 write "}, + {"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) -{ +int CmdLFPCF7931(const char *Cmd) { + clearCommandBuffer(); CmdsParse(CommandTable, Cmd); return 0; } -int CmdHelp(const char *Cmd) -{ +int CmdHelp(const char *Cmd) { CmdsHelp(CommandTable); return 0; }