more graceful exit to lf search if no signal found

[proxmark3-svn] / client / cmdhfmfu.c

diff --git a/client/cmdhfmfu.c b/client/cmdhfmfu.c
index ca4544f37f6bc9f618f3671f6eaf3ebe191fc51f..63c417289567815f5cf6c3967b400780eb21222a 100644 (file)
--- a/client/cmdhfmfu.c
+++ b/client/cmdhfmfu.c
@@ -108,13 +108,7 @@ char *getUlev1CardSizeStr( uint8_t fsize ){
 }
 
 static void ul_switch_on_field(void) {
-       UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
-       clearCommandBuffer();
-       SendCommand(&c);
-}
-
-void ul_switch_off_field(void) {
-       UsbCommand c = {CMD_READER_ISO_14443a, {0, 0, 0}};
+       UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT | ISO14A_NO_RATS, 0, 0}};
        clearCommandBuffer();
        SendCommand(&c);
 }
@@ -159,7 +153,7 @@ static int ul_select( iso14a_card_select_t *card ){
        ans = WaitForResponseTimeout(CMD_ACK, &resp, 1500);
        if (!ans || resp.arg[0] < 1) {
                PrintAndLog("iso14443a card select failed");
-               ul_switch_off_field();
+               DropField();
                return 0;
        }
 
@@ -232,7 +226,7 @@ static int ul_auth_select( iso14a_card_select_t *card, TagTypeUL_t tagtype, bool
 
                if (hasAuthKey) {
                        if (ulev1_requestAuthentication(authenticationkey, pack, packSize) < 1) {
-                               ul_switch_off_field();
+                               DropField();
                                PrintAndLog("Error: Authentication Failed UL-EV1/NTAG");
                                return 0;
                        }
@@ -556,7 +550,7 @@ static int ulc_magic_test(){
        } else {
                returnValue = UL;
        }       
-       ul_switch_off_field();
+       DropField();
        return returnValue;
 }
 */
@@ -569,7 +563,7 @@ static int ul_magic_test(){
        if ( !ul_select(&card) ) 
                return UL_ERROR;
        int status = ul_comp_write(0, NULL, 0);
-       ul_switch_off_field();
+       DropField();
        if ( status == 0 ) 
                return MAGIC;
        return 0;
@@ -588,14 +582,14 @@ uint32_t GetHF14AMfU_Type(void){
        // Ultralight - ATQA / SAK 
        if ( card.atqa[1] != 0x00 || card.atqa[0] != 0x44 || card.sak != 0x00 ) {
                PrintAndLog("Tag is not Ultralight | NTAG | MY-D  [ATQA: %02X %02X SAK: %02X]\n", card.atqa[1], card.atqa[0], card.sak);
-               ul_switch_off_field();
+               DropField();
                return UL_ERROR;
        }
 
        if ( card.uid[0] != 0x05) {
 
                len  = ulev1_getVersion(version, sizeof(version));
-               ul_switch_off_field();
+               DropField();
 
                switch (len) {
                        case 0x0A: {
@@ -635,7 +629,7 @@ uint32_t GetHF14AMfU_Type(void){
                        // do UL_C check first...
                        uint8_t nonce[11] = {0x00};
                        status = ulc_requestAuthentication(nonce, sizeof(nonce));
-                       ul_switch_off_field();
+                       DropField();
                        if (status > 1) {
                                tagtype = UL_C;
                        } else { 
@@ -656,15 +650,15 @@ uint32_t GetHF14AMfU_Type(void){
                                                tagtype = UNKNOWN;
                                        }
                                }
-                               ul_switch_off_field();
+                               DropField();
                        }
                }
                if (tagtype & UL) {
                        tagtype = ul_fudan_check(); 
-                       ul_switch_off_field();
+                       DropField();
                }
        } else {
-               ul_switch_off_field();
+               DropField();
                // Infinition MY-D tests   Exam high nibble 
                uint8_t nib = (card.uid[1] & 0xf0) >> 4;
                switch ( nib ){
@@ -709,7 +703,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                        return usage_hf_mfu_info();
                case 'k':
                case 'K':
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 32 || dataLen == 8) { //ul-c or ev1/ntag key length
                                errors = param_gethex(tempStr, 0, authenticationkey, dataLen);
                                dataLen /= 2; // handled as bytes from now on
@@ -751,7 +745,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
        // read pages 0,1,2,3 (should read 4pages)
        status = ul_read(0, data, sizeof(data));
        if ( status == -1 ) {
-               ul_switch_off_field();
+               DropField();
                PrintAndLog("Error: tag didn't answer to READ");
                return status;
        } else if (status == 16) {
@@ -769,7 +763,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                status = ul_read(0x28, ulc_conf, sizeof(ulc_conf));
                if ( status == -1 ){
                        PrintAndLog("Error: tag didn't answer to READ UL-C");
-                       ul_switch_off_field();
+                       DropField();
                        return status;
                } 
                if (status == 16) ulc_print_configuration(ulc_conf);
@@ -780,14 +774,14 @@ int CmdHF14AMfUInfo(const char *Cmd){
                        uint8_t ulc_deskey[16] = {0x00};
                        status = ul_read(0x2C, ulc_deskey, sizeof(ulc_deskey));
                        if ( status == -1 ) {
-                               ul_switch_off_field();
+                               DropField();
                                PrintAndLog("Error: tag didn't answer to READ magic");
                                return status;
                        }
                        if (status == 16) ulc_print_3deskey(ulc_deskey);
 
                } else {
-                       ul_switch_off_field();
+                       DropField();
                        // if we called info with key, just return 
                        if ( hasAuthKey ) return 1;
 
@@ -822,7 +816,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                status = ulev1_readSignature( ulev1_signature, sizeof(ulev1_signature));
                if ( status == -1 ) {
                        PrintAndLog("Error: tag didn't answer to READ SIGNATURE");
-                       ul_switch_off_field();
+                       DropField();
                        return status;
                }
                if (status == 32) ulev1_print_signature( ulev1_signature, sizeof(ulev1_signature));
@@ -837,7 +831,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                status  = ulev1_getVersion(version, sizeof(version));
                if ( status == -1 ) {
                        PrintAndLog("Error: tag didn't answer to GETVERSION");
-                       ul_switch_off_field();
+                       DropField();
                        return status;
                } else if (status == 10) {
                        ulev1_print_version(version);
@@ -857,7 +851,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                        status = ul_read(startconfigblock, ulev1_conf, sizeof(ulev1_conf));
                        if ( status == -1 ) {
                                PrintAndLog("Error: tag didn't answer to READ EV1");
-                               ul_switch_off_field();
+                               DropField();
                                return status;
                        } else if (status == 16) {
                                // save AUTHENTICATION LIMITS for later:
@@ -887,7 +881,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                }
        }
 
-       ul_switch_off_field();
+       DropField();
        if (locked) PrintAndLog("\nTag appears to be locked, try using the key to get more info");
        PrintAndLog("");
        return 1;
@@ -1244,7 +1238,7 @@ int CmdHF14AMfUDump(const char *Cmd){
                        return usage_hf_mfu_dump();
                case 'k':
                case 'K':
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 32 || dataLen == 8) { //ul-c or ev1/ntag key length
                                errors = param_gethex(tempStr, 0, authenticationkey, dataLen);
                                dataLen /= 2;
@@ -1262,7 +1256,7 @@ int CmdHF14AMfUDump(const char *Cmd){
                        break;
                case 'n':
                case 'N':
-                       fileNlen = param_getstr(Cmd, cmdp+1, filename);
+                       fileNlen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename));
                        if (!fileNlen) errors = true; 
                        if (fileNlen > FILE_PATH_SIZE-5) fileNlen = FILE_PATH_SIZE-5;
                        cmdp += 2;