X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/1604d0a2909a6ae1a5b615d280671d867c1028a4..4c3de57ad2c0ac268c9eccaf46a2dbf58fb0d313:/client/cmdhf14a.c diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c index 534444fd..36ffe1b8 100644 --- a/client/cmdhf14a.c +++ b/client/cmdhf14a.c @@ -29,150 +29,7 @@ static void waitCmd(uint8_t iLen); int CmdHF14AList(const char *Cmd) { - bool ShowWaitCycles = false; - char param = param_getchar(Cmd, 0); - - if (param == 'h' || (param != 0 && param != 'f')) { - PrintAndLog("List data in trace buffer."); - PrintAndLog("Usage: hf 14a list [f]"); - PrintAndLog("f - show frame delay times as well"); - PrintAndLog("sample: hf 14a list f"); - return 0; - } - - if (param == 'f') { - ShowWaitCycles = true; - } - - uint8_t got[1920]; - GetFromBigBuf(got,sizeof(got),0); - WaitForResponse(CMD_ACK,NULL); - - PrintAndLog("Recorded Activity"); - PrintAndLog(""); - PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer"); - PrintAndLog("All times are in carrier periods (1/13.56Mhz)"); - PrintAndLog(""); - PrintAndLog(" Start | End | Src | Data"); - PrintAndLog("-----------|-----------|-----|--------"); - - int i = 0; - uint32_t first_timestamp = 0; - uint32_t timestamp; - uint32_t EndOfTransmissionTimestamp = 0; - - for (;;) { - if(i >= 1900) { - break; - } - - bool isResponse; - timestamp = *((uint32_t *)(got+i)); - if (timestamp & 0x80000000) { - timestamp &= 0x7fffffff; - isResponse = true; - } else { - isResponse = false; - } - - if(i==0) { - first_timestamp = timestamp; - } - - int parityBits = *((uint32_t *)(got+i+4)); - - int len = got[i+8]; - - if (len > 100) { - break; - } - if (i + len >= 1900) { - break; - } - - uint8_t *frame = (got+i+9); - - // Break and stick with current result if buffer was not completely full - if (frame[0] == 0x44 && frame[1] == 0x44 && frame[2] == 0x44 && frame[3] == 0x44) break; - - char line[1000] = ""; - int j; - if (len) { - for (j = 0; j < len; j++) { - int oddparity = 0x01; - int k; - - for (k=0;k<8;k++) { - oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01); - } - - //if((parityBits >> (len - j - 1)) & 0x01) { - if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) { - sprintf(line+(j*4), "%02x! ", frame[j]); - } else { - sprintf(line+(j*4), "%02x ", frame[j]); - } - } - } else { - if (ShowWaitCycles) { - uint32_t next_timestamp = (*((uint32_t *)(got+i+9))) & 0x7fffffff; - sprintf(line, "fdt (Frame Delay Time): %d", (next_timestamp - timestamp)); - } - } - - char *crc; - crc = ""; - if (len > 2) { - uint8_t b1, b2; - for (j = 0; j < (len - 1); j++) { - // gives problems... search for the reason.. - /*if(frame[j] == 0xAA) { - switch(frame[j+1]) { - case 0x01: - crc = "[1] Two drops close after each other"; - break; - case 0x02: - crc = "[2] Potential SOC with a drop in second half of bitperiod"; - break; - case 0x03: - crc = "[3] Segment Z after segment X is not possible"; - break; - case 0x04: - crc = "[4] Parity bit of a fully received byte was wrong"; - break; - default: - crc = "[?] Unknown error"; - break; - } - break; - }*/ - } - - if (strlen(crc)==0) { - ComputeCrc14443(CRC_14443_A, frame, len-2, &b1, &b2); - if (b1 != frame[len-2] || b2 != frame[len-1]) { - crc = (isResponse & (len < 6)) ? "" : " !crc"; - } else { - crc = ""; - } - } - } else { - crc = ""; // SHORT - } - - i += (len + 9); - - EndOfTransmissionTimestamp = (*((uint32_t *)(got+i))) & 0x7fffffff; - - if (!ShowWaitCycles) i += 9; - - PrintAndLog(" %9d | %9d | %s | %s %s", - (timestamp - first_timestamp), - (EndOfTransmissionTimestamp - first_timestamp), - (len?(isResponse ? "Tag" : "Rdr"):" "), - line, crc); - - } + PrintAndLog("Deprecated command, use 'hf list 14a' instead"); return 0; } @@ -192,10 +49,15 @@ int CmdHF14AReader(const char *Cmd) iso14a_card_select_t card; memcpy(&card, (iso14a_card_select_t *)resp.d.asBytes, sizeof(iso14a_card_select_t)); - uint64_t select_status = resp.arg[0]; + uint64_t select_status = resp.arg[0]; // 0: couldn't read, 1: OK, with ATS, 2: OK, no ATS if(select_status == 0) { PrintAndLog("iso14443a card select failed"); + // disconnect + c.arg[0] = 0; + c.arg[1] = 0; + c.arg[2] = 0; + SendCommand(&c); return 0; } @@ -232,7 +94,7 @@ int CmdHF14AReader(const char *Cmd) WaitForResponse(CMD_ACK,&resp); memcpy(&card.ats, resp.d.asBytes, resp.arg[0]); - card.ats_len = resp.arg[0]; + card.ats_len = resp.arg[0]; // note: ats_len includes CRC Bytes } // disconnect @@ -242,28 +104,36 @@ int CmdHF14AReader(const char *Cmd) SendCommand(&c); - if(card.ats_len >= 3) { // a valid ATS consists of at least the length byte TL and 2 CRC bytes + if(card.ats_len >= 3) { // a valid ATS consists of at least the length byte (TL) and 2 CRC bytes bool ta1 = 0, tb1 = 0, tc1 = 0; int pos; - if (!(card.sak & 0x02)) { + if (select_status == 2) { PrintAndLog("SAK incorrectly claims that card doesn't support RATS"); } PrintAndLog(" ATS : %s", sprint_hex(card.ats, card.ats_len)); - if (card.ats_len > 0) { - PrintAndLog(" - TL : length is %d bytes", card.ats[0]); + PrintAndLog(" - TL : length is %d bytes", card.ats[0]); + if (card.ats[0] != card.ats_len - 2) { + PrintAndLog("ATS may be corrupted. Length of ATS (%d bytes incl. 2 Bytes CRC) doesn't match TL", card.ats_len); } - if (card.ats_len > 1) { + + if (card.ats[0] > 1) { // there is a format byte (T0) ta1 = (card.ats[1] & 0x10) == 0x10; tb1 = (card.ats[1] & 0x20) == 0x20; tc1 = (card.ats[1] & 0x40) == 0x40; + int16_t fsci = card.ats[1] & 0x0f; PrintAndLog(" - T0 : TA1 is%s present, TB1 is%s present, " - "TC1 is%s present, FSCI is %d", + "TC1 is%s present, FSCI is %d (FSC = %ld)", (ta1 ? "" : " NOT"), (tb1 ? "" : " NOT"), (tc1 ? "" : " NOT"), - (card.ats[1] & 0x0f)); + fsci, + fsci < 5 ? (fsci - 2) * 8 : + fsci < 8 ? (fsci - 3) * 32 : + fsci == 8 ? 256 : + -1 + ); } pos = 2; - if (ta1 && card.ats_len > pos) { + if (ta1) { char dr[16], ds[16]; dr[0] = ds[0] = '\0'; if (card.ats[pos] & 0x10) strcat(ds, "2, "); @@ -279,28 +149,34 @@ int CmdHF14AReader(const char *Cmd) (card.ats[pos] & 0x80 ? " NOT" : ""), dr, ds); pos++; } - if (tb1 && card.ats_len > pos) { - PrintAndLog(" - TB1 : SFGI = %d, FWI = %d", - (card.ats[pos] & 0x08), - (card.ats[pos] & 0x80) >> 4); + if (tb1) { + uint32_t sfgi = card.ats[pos] & 0x0F; + uint32_t fwi = card.ats[pos] >> 4; + PrintAndLog(" - TB1 : SFGI = %d (SFGT = %s%ld/fc), FWI = %d (FWT = %ld/fc)", + (sfgi), + sfgi ? "" : "(not needed) ", + sfgi ? (1 << 12) << sfgi : 0, + fwi, + (1 << 12) << fwi + ); pos++; } - if (tc1 && card.ats_len > pos) { + if (tc1) { PrintAndLog(" - TC1 : NAD is%s supported, CID is%s supported", (card.ats[pos] & 0x01) ? "" : " NOT", (card.ats[pos] & 0x02) ? "" : " NOT"); pos++; } - if (card.ats_len > pos) { + if (card.ats[0] > pos) { char *tip = ""; - if (card.ats_len - pos > 7) { + if (card.ats[0] - pos >= 7) { if (memcmp(card.ats + pos, "\xC1\x05\x2F\x2F\x01\xBC\xD6", 7) == 0) { tip = "-> MIFARE Plus X 2K or 4K"; } else if (memcmp(card.ats + pos, "\xC1\x05\x2F\x2F\x00\x35\xC7", 7) == 0) { tip = "-> MIFARE Plus S 2K or 4K"; } } - PrintAndLog(" - HB : %s%s", sprint_hex(card.ats + pos, card.ats_len - pos - 2), tip); + PrintAndLog(" - HB : %s%s", sprint_hex(card.ats + pos, card.ats[0] - pos), tip); if (card.ats[pos] == 0xC1) { PrintAndLog(" c1 -> Mifare or (multiple) virtual cards of various type"); PrintAndLog(" %02x -> Length is %d bytes", @@ -496,7 +372,7 @@ int CmdHF14ASnoop(const char *Cmd) { if (param_getchar(Cmd, 0) == 'h') { PrintAndLog("It get data from the field and saves it into command buffer."); - PrintAndLog("Buffer accessible from command hf 14a list."); + PrintAndLog("Buffer accessible from command hf list 14a."); PrintAndLog("Usage: hf 14a snoop [c][r]"); PrintAndLog("c - triggered by first data from card"); PrintAndLog("r - triggered by first 7-bit request from reader (REQ,WUP,...)"); @@ -657,7 +533,7 @@ static void waitCmd(uint8_t iSelect) static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, - {"list", CmdHF14AList, 0, "List ISO 14443a history"}, + {"list", CmdHF14AList, 0, "[Deprecated] List ISO 14443a history"}, {"reader", CmdHF14AReader, 0, "Act like an ISO14443 Type A reader"}, {"cuids", CmdHF14ACUIDs, 0, " Collect n>0 ISO14443 Type A UIDs in one go"}, {"sim", CmdHF14ASim, 0, " -- Fake ISO 14443a tag"},