X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/d2736c4e2019a54de8a8a483847fb637be889d10..ef3f88bca9fbf8f228781f7e7b41fb6435130d84:/client/cmdhficlass.c?ds=sidebyside diff --git a/client/cmdhficlass.c b/client/cmdhficlass.c index 12a7141e..309880d2 100644 --- a/client/cmdhficlass.c +++ b/client/cmdhficlass.c @@ -33,8 +33,6 @@ #include "usb_cmd.h" #include "cmdhfmfu.h" -#define llX PRIx64 - static int CmdHelp(const char *Cmd); #define ICLASS_KEYS_MAX 8 @@ -283,8 +281,13 @@ int CmdHFiClassELoad(const char *Cmd) { long fsize = ftell(f); fseek(f, 0, SEEK_SET); - uint8_t *dump = malloc(fsize); + if (fsize < 0) { + PrintAndLog("Error, when getting filesize"); + fclose(f); + return 1; + } + uint8_t *dump = malloc(fsize); size_t bytes_read = fread(dump, 1, fsize, f); fclose(f); @@ -368,10 +371,13 @@ int CmdHFiClassDecrypt(const char *Cmd) { //Open the tagdump-file FILE *f; char filename[FILE_PATH_SIZE]; - if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0) - { + if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0) { f = fopen(filename, "rb"); - }else{ + if ( f == NULL ) { + PrintAndLog("Could not find file %s", filename); + return 1; + } + } else { return usage_hf_iclass_decrypt(); } @@ -591,7 +597,7 @@ int CmdHFiClassReader_Dump(const char *Cmd) { errors = param_gethex(tempStr, 0, CreditKEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); - if (keyNbr <= ICLASS_KEYS_MAX) { + if (keyNbr < ICLASS_KEYS_MAX) { memcpy(CreditKEY, iClass_Key_Table[keyNbr], 8); } else { PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); @@ -625,7 +631,7 @@ int CmdHFiClassReader_Dump(const char *Cmd) { errors = param_gethex(tempStr, 0, KEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); - if (keyNbr <= ICLASS_KEYS_MAX) { + if (keyNbr < ICLASS_KEYS_MAX) { memcpy(KEY, iClass_Key_Table[keyNbr], 8); } else { PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); @@ -884,7 +890,7 @@ int CmdHFiClass_WriteBlock(const char *Cmd) { errors = param_gethex(tempStr, 0, KEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); - if (keyNbr <= ICLASS_KEYS_MAX) { + if (keyNbr < ICLASS_KEYS_MAX) { memcpy(KEY, iClass_Key_Table[keyNbr], 8); } else { PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); @@ -933,7 +939,7 @@ int usage_hf_iclass_clone(void) { } int CmdHFiClassCloneTag(const char *Cmd) { - char filename[FILE_PATH_SIZE]; + char filename[FILE_PATH_SIZE] = {0}; char tempStr[50]={0}; uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; uint8_t keyNbr = 0; @@ -987,7 +993,7 @@ int CmdHFiClassCloneTag(const char *Cmd) { errors = param_gethex(tempStr, 0, KEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); - if (keyNbr <= ICLASS_KEYS_MAX) { + if (keyNbr < ICLASS_KEYS_MAX) { memcpy(KEY, iClass_Key_Table[keyNbr], 8); } else { PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); @@ -1038,6 +1044,7 @@ int CmdHFiClassCloneTag(const char *Cmd) { if (startblock<5) { PrintAndLog("You cannot write key blocks this way. yet... make your start block > 4"); + fclose(f); return 0; } // now read data from the file from block 6 --- 19 @@ -1046,7 +1053,11 @@ int CmdHFiClassCloneTag(const char *Cmd) { // else we have to create a share memory int i; fseek(f,startblock*8,SEEK_SET); - fread(tag_data,sizeof(iclass_block_t),endblock - startblock + 1,f); + if ( fread(tag_data,sizeof(iclass_block_t),endblock - startblock + 1,f) == 0 ) { + PrintAndLog("File reading error."); + fclose(f); + return 2; + } uint8_t MAC[4]={0x00,0x00,0x00,0x00}; uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; @@ -1168,7 +1179,7 @@ int CmdHFiClass_ReadBlock(const char *Cmd) { errors = param_gethex(tempStr, 0, KEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); - if (keyNbr <= ICLASS_KEYS_MAX) { + if (keyNbr < ICLASS_KEYS_MAX) { memcpy(KEY, iClass_Key_Table[keyNbr], 8); } else { PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); @@ -1305,8 +1316,13 @@ int CmdHFiClassReadTagFile(const char *Cmd) { long fsize = ftell(f); fseek(f, 0, SEEK_SET); - uint8_t *dump = malloc(fsize); + if ( fsize < 0 ) { + PrintAndLog("Error, when getting filesize"); + fclose(f); + return 1; + } + uint8_t *dump = malloc(fsize); size_t bytes_read = fread(dump, 1, fsize, f); fclose(f); @@ -1332,7 +1348,7 @@ uint64_t hexarray_to_uint64(uint8_t *key) { for (int i = 0;i < 8;i++) sprintf(&temp[(i *2)],"%02X",key[i]); temp[16] = '\0'; - if (sscanf(temp,"%016"llX,&uint_key) < 1) + if (sscanf(temp,"%016"llx,&uint_key) < 1) return 0; return uint_key; } @@ -1431,7 +1447,7 @@ int CmdHFiClassCalcNewKey(const char *Cmd) { errors = param_gethex(tempStr, 0, NEWKEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); - if (keyNbr <= ICLASS_KEYS_MAX) { + if (keyNbr < ICLASS_KEYS_MAX) { memcpy(NEWKEY, iClass_Key_Table[keyNbr], 8); } else { PrintAndLog("\nERROR: NewKey Nbr is invalid\n"); @@ -1450,7 +1466,7 @@ int CmdHFiClassCalcNewKey(const char *Cmd) { errors = param_gethex(tempStr, 0, OLDKEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); - if (keyNbr <= ICLASS_KEYS_MAX) { + if (keyNbr < ICLASS_KEYS_MAX) { memcpy(OLDKEY, iClass_Key_Table[keyNbr], 8); } else { PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); @@ -1498,6 +1514,12 @@ static int loadKeys(char *filename) { long fsize = ftell(f); fseek(f, 0, SEEK_SET); + if ( fsize < 0 ) { + PrintAndLog("Error, when getting filesize"); + fclose(f); + return 1; + } + uint8_t *dump = malloc(fsize); size_t bytes_read = fread(dump, 1, fsize, f); @@ -1590,8 +1612,8 @@ int CmdHFiClassManageKeys(const char *Cmd) { case 'n': case 'N': keyNbr = param_get8(Cmd, cmdp+1); - if (keyNbr < 0) { - PrintAndLog("Wrong block number"); + if (keyNbr >= ICLASS_KEYS_MAX) { + PrintAndLog("Invalid block number"); errors = true; } cmdp += 2;