+
+int CmdLegicLoad(const char *Cmd) {
+
+ char cmdp = param_getchar(Cmd, 0);
+ if ( cmdp == 'H' || cmdp == 'h' || cmdp == 0x00) return usage_legic_load();
+
+ char filename[FILE_PATH_SIZE] = {0x00};
+ int len = strlen(Cmd);
+
+ if (len > FILE_PATH_SIZE) {
+ PrintAndLog("Filepath too long (was %s bytes), max allowed is %s ", len, FILE_PATH_SIZE);
+ return 0;
+ }
+ memcpy(filename, Cmd, len);
+
+ FILE *f = fopen(filename, "r");
+ if(!f) {
+ PrintAndLog("couldn't open '%s'", Cmd);
+ return -1;
+ }
+
+ char line[80];
+ int offset = 0;
+ uint8_t data[USB_CMD_DATA_SIZE] = {0x00};
+ int index = 0;
+ int totalbytes = 0;
+ while ( fgets(line, sizeof(line), f) ) {
+ int res = sscanf(line, "%x %x %x %x %x %x %x %x",
+ (unsigned int *)&data[index],
+ (unsigned int *)&data[index + 1],
+ (unsigned int *)&data[index + 2],
+ (unsigned int *)&data[index + 3],
+ (unsigned int *)&data[index + 4],
+ (unsigned int *)&data[index + 5],
+ (unsigned int *)&data[index + 6],
+ (unsigned int *)&data[index + 7]);
+
+ if(res != 8) {
+ PrintAndLog("Error: could not read samples");
+ fclose(f);
+ return -1;
+ }
+ index += res;
+
+ if ( index == USB_CMD_DATA_SIZE ){
+// PrintAndLog("sent %d | %d | %d", index, offset, totalbytes);
+ UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}};
+ memcpy(c.d.asBytes, data, sizeof(data));
+ clearCommandBuffer();
+ SendCommand(&c);
+ if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){
+ PrintAndLog("Command execute timeout");
+ fclose(f);
+ return 1;
+ }
+ offset += index;
+ totalbytes += index;
+ index = 0;
+ }
+ }
+ fclose(f);
+
+ // left over bytes?
+ if ( index != 0 ) {
+ UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}};
+ memcpy(c.d.asBytes, data, 8);
+ clearCommandBuffer();
+ SendCommand(&c);
+ if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){
+ PrintAndLog("Command execute timeout");
+ return 1;
+ }
+ totalbytes += index;
+ }
+
+ PrintAndLog("loaded %u samples", totalbytes);
+ return 0;
+}
+
+int CmdLegicSave(const char *Cmd) {
+ int requested = 1024;
+ int offset = 0;
+ int delivered = 0;
+ char filename[FILE_PATH_SIZE];
+ uint8_t got[1024] = {0x00};
+
+ sscanf(Cmd, " %s %i %i", filename, &requested, &offset);
+
+ /* If no length given save entire legic read buffer */
+ /* round up to nearest 8 bytes so the saved data can be used with legicload */
+ if (requested == 0)
+ requested = 1024;
+
+ if (requested % 8 != 0) {
+ int remainder = requested % 8;
+ requested = requested + 8 - remainder;
+ }
+
+ if (offset + requested > sizeof(got)) {
+ PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > 1024");
+ return 0;
+ }
+
+ GetFromBigBuf(got, requested, offset);
+ if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){
+ PrintAndLog("Command execute timeout");
+ return 1;
+ }
+
+ FILE *f = fopen(filename, "w");
+ if(!f) {
+ PrintAndLog("couldn't open '%s'", Cmd+1);
+ return -1;
+ }
+
+ for (int j = 0; j < requested; j += 8) {
+ fprintf(f, "%02x %02x %02x %02x %02x %02x %02x %02x\n",
+ got[j+0], got[j+1], got[j+2], got[j+3],
+ got[j+4], got[j+5], got[j+6], got[j+7]
+ );
+ delivered += 8;
+ if (delivered >= requested) break;
+ }
+
+ fclose(f);
+ PrintAndLog("saved %u samples", delivered);
+ return 0;
+}
+
+//TODO: write a help text (iceman)
+int CmdLegicRfSim(const char *Cmd) {
+ UsbCommand c = {CMD_SIMULATE_TAG_LEGIC_RF, {6,3,0}};
+ sscanf(Cmd, " %"lli" %"lli" %"lli, &c.arg[0], &c.arg[1], &c.arg[2]);
+ clearCommandBuffer();
+ SendCommand(&c);
+ return 0;
+}
+
+//TODO: write a help text (iceman)
+int CmdLegicRfWrite(const char *Cmd) {
+ UsbCommand c = {CMD_WRITER_LEGIC_RF};
+ int res = sscanf(Cmd, " 0x%"llx" 0x%"llx, &c.arg[0], &c.arg[1]);
+ if(res != 2) {
+ PrintAndLog("Please specify the offset and length as two hex strings");
+ return -1;
+ }
+ clearCommandBuffer();
+ SendCommand(&c);
+ return 0;
+}
+
+int CmdLegicRfFill(const char *Cmd) {
+ UsbCommand cmd = {CMD_WRITER_LEGIC_RF};
+ int res = sscanf(Cmd, " 0x%"llx" 0x%"llx" 0x%"llx, &cmd.arg[0], &cmd.arg[1], &cmd.arg[2]);
+ if(res != 3) {
+ PrintAndLog("Please specify the offset, length and value as two hex strings");
+ return -1;
+ }
+
+ int i;
+ UsbCommand c = {CMD_DOWNLOADED_SIM_SAMPLES_125K, {0, 0, 0}};
+ for(i = 0; i < 48; i++) {
+ c.d.asBytes[i] = cmd.arg[2];
+ }
+
+ for(i = 0; i < 22; i++) {
+ c.arg[0] = i*48;
+ SendCommand(&c);
+ WaitForResponse(CMD_ACK,NULL);
+ }
+ clearCommandBuffer();
+ SendCommand(&cmd);
+ return 0;
+ }
+
+int CmdLegicCalcCrc8(const char *Cmd){
+
+ int len = strlen(Cmd);
+ if ( len & 1 ) return usage_legic_calccrc8();
+
+ // add 1 for null terminator.
+ uint8_t *data = malloc(len+1);
+ if ( data == NULL ) return 1;
+
+ if (param_gethex(Cmd, 0, data, len )) {
+ free(data);
+ return usage_legic_calccrc8();
+ }
+
+ uint32_t checksum = CRC8Legic(data, len/2);
+ PrintAndLog("Bytes: %s || CRC8: %X", sprint_hex(data, len/2), checksum );
+ free(data);
+ return 0;
+}
+
+static command_t CommandTable[] = {
+ {"help", CmdHelp, 1, "This help"},
+ {"decode", CmdLegicDecode, 0, "Display deobfuscated and decoded LEGIC RF tag data (use after hf legic reader)"},
+ {"read", CmdLegicRFRead, 0, "[offset][length] -- read bytes from a LEGIC card"},
+ {"save", CmdLegicSave, 0, "<filename> [<length>] -- Store samples"},
+ {"load", CmdLegicLoad, 0, "<filename> -- Restore samples"},
+ {"sim", CmdLegicRfSim, 0, "[phase drift [frame drift [req/resp drift]]] Start tag simulator (use after load or read)"},
+ {"write", CmdLegicRfWrite,0, "<offset> <length> -- Write sample buffer (user after load or read)"},
+ {"fill", CmdLegicRfFill, 0, "<offset> <length> <value> -- Fill/Write tag with constant value"},
+ {"crc8", CmdLegicCalcCrc8, 1, "Calculate Legic CRC8 over given hexbytes"},
+ {NULL, NULL, 0, NULL}
+};
+
+int CmdHFLegic(const char *Cmd) {
+ clearCommandBuffer();
+ CmdsParse(CommandTable, Cmd);
+ return 0;
+}
+
+int CmdHelp(const char *Cmd) {
+ CmdsHelp(CommandTable);
+ return 0;
+}
\ No newline at end of file
projects / proxmark3-svn / blobdiff