From 415274a7c3253b71b582c2f563bb54080c2790be Mon Sep 17 00:00:00 2001 From: marshmellow42 Date: Mon, 9 Nov 2015 23:09:26 -0500 Subject: [PATCH] Add Viking demod, fix compiler warning for int vs uint8_t for em410x sim clock variable --- CHANGELOG.md | 3 +++ client/cmddata.c | 27 +++++++++++++++++++++++++++ client/cmddata.h | 1 + client/cmdlf.c | 6 ++++++ client/cmdlfem4x.c | 6 +++--- common/lfdemod.c | 17 +++++++++++++++++ common/lfdemod.h | 1 + 7 files changed, 58 insertions(+), 3 deletions(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index 163bc42a..a3a0799e 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5,6 +5,8 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac ## [unreleased][unreleased] ### Added +- Added viking demod to `lf search` (marshmellow) +- `data askvikingdemod` demod viking id tag from graphbuffer (marshmellow) - `lf t55xx resetread` added reset then read command - should allow determining start of stream transmissions (marshmellow) - `lf t55xx wakeup` added wake with password (AOR) to allow lf search or standard lf read after (iceman, marshmellow) @@ -24,6 +26,7 @@ of stream transmissions (marshmellow) - Added option c to 'hf list' (mark CRC bytes) (piwi) ### Changed +- Adjusted lf em410x em410xsim to accept a clock argument - Adjusted lf t55xx dump to allow overriding the safety check and warning text (marshmellow) - Adjusted lf t55xx write input variables (marshmellow) - Adjusted lf t55xx read with password safety check and warning text and adjusted the input variables (marshmellow & iceman) diff --git a/client/cmddata.c b/client/cmddata.c index 9fa29dd1..663faf80 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -637,6 +637,32 @@ int CmdG_Prox_II_Demod(const char *Cmd) return 1; } +//by marshmellow +//see ASKDemod for what args are accepted +int CmdVikingDemod(const char *Cmd) +{ + if (!ASKDemod(Cmd, false, false, 1)) { + if (g_debugMode) PrintAndLog("ASKDemod failed"); + return 0; + } + size_t size = DemodBufferLen; + //call lfdemod.c demod for gProxII + int ans = VikingDemod_AM(DemodBuffer, &size); + if (ans < 0) { + if (g_debugMode) PrintAndLog("Error Viking_Demod"); + return 0; + } + //got a good demod + uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32); + uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32); + uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32); + uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8); + PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum); + PrintAndLog("Raw: %08X%08X", raw1,raw2); + setDemodBuf(DemodBuffer+ans, 64, 0); + return 1; +} + //by marshmellow - see ASKDemod int Cmdaskrawdemod(const char *Cmd) { @@ -2345,6 +2371,7 @@ static command_t CommandTable[] = {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"}, {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"}, {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"}, + {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking tag from GraphBuffer"}, {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"}, {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"}, {"bin2hex", Cmdbin2hex, 1, "bin2hex -- Converts binary to hexadecimal"}, diff --git a/client/cmddata.h b/client/cmddata.h index fcc51a6b..c3303c54 100644 --- a/client/cmddata.h +++ b/client/cmddata.h @@ -17,6 +17,7 @@ int CmdData(const char *Cmd); void printDemodBuff(void); void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx); int CmdAskEM410xDemod(const char *Cmd); +int CmdVikingDemod(const char *Cmd); int CmdG_Prox_II_Demod(const char *Cmd); int Cmdaskrawdemod(const char *Cmd); int Cmdaskmandemod(const char *Cmd); diff --git a/client/cmdlf.c b/client/cmdlf.c index 6b8a31b2..616d932a 100644 --- a/client/cmdlf.c +++ b/client/cmdlf.c @@ -1155,6 +1155,12 @@ int CmdLFfind(const char *Cmd) return 1; } + ans=CmdVikingDemod(""); + if (ans>0) { + PrintAndLog("\nValid Viking ID Found!"); + return 1; + } + ans=CmdPSKNexWatch(""); if (ans>0) { PrintAndLog("\nValid NexWatch ID Found!"); diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index 559618bc..7ff8037b 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -79,13 +79,13 @@ int CmdEM410xSim(const char *Cmd) return 0; } /* clock is 64 in EM410x tags */ - int clock = 64; + uint8_t clock = 64; if (param_gethex(Cmd, 0, uid, 10)) { PrintAndLog("UID must include 10 HEX symbols"); return 0; } - param_getdec(Cmd,1,&clock); + param_getdec(Cmd,1, &clock); PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock); PrintAndLog("Press pm3-button to about simulation"); @@ -601,7 +601,7 @@ static command_t CommandTable[] = {"help", CmdHelp, 1, "This help"}, {"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"}, {"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"}, - {"em410xsim", CmdEM410xSim, 0, " -- Simulate EM410x tag"}, + {"em410xsim", CmdEM410xSim, 0, " [clock rate] -- Simulate EM410x tag"}, {"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"}, {"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" }, {"em410xwrite", CmdEM410xWrite, 0, " <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"}, diff --git a/common/lfdemod.c b/common/lfdemod.c index f5a0310e..5d19c897 100644 --- a/common/lfdemod.c +++ b/common/lfdemod.c @@ -597,6 +597,23 @@ int IOdemodFSK(uint8_t *dest, size_t size) return (int) startIdx; } return -5; +} + +// by marshmellow +// find viking preamble 0xF200 in already demoded data +int VikingDemod_AM(uint8_t *dest, size_t *size) { + if (justNoise(dest, *size)) return -1; + //make sure buffer has data + if (*size < 64*2) return -2; + + size_t startIdx = 0; + uint8_t preamble[] = {1,1,1,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; + uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx); + if (errChk == 0) return -4; //preamble not found + + if (*size != 64) return -5; + //return start position + return (int) startIdx; } // by marshmellow diff --git a/common/lfdemod.h b/common/lfdemod.h index e1a51856..cc4fa27a 100644 --- a/common/lfdemod.h +++ b/common/lfdemod.h @@ -50,5 +50,6 @@ int IOdemodFSK(uint8_t *dest, size_t size); int indala26decode(uint8_t *bitStream, size_t *size, uint8_t *invert); int ParadoxdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo); int PyramiddemodFSK(uint8_t *dest, size_t *size); +int VikingDemod_AM(uint8_t *dest, size_t *size); #endif -- 2.39.5