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PN532: Prevent non AlphaNumberic on DATA

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This commit is contained in:
andrethomas 2019-01-17 02:10:22 +02:00
parent 01ecc12f13
commit 66c39ce88c
1 changed files with 21 additions and 9 deletions
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22
sonoff/xsns_40_pn532_i2c.ino
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@ -67,6 +67,7 @@ uint8_t pn532_i2c_disable = 0;
#ifdef USE_PN532_DATA_FUNCTION #ifdef USE_PN532_DATA_FUNCTION
uint8_t pn532_i2c_function = 0; uint8_t pn532_i2c_function = 0;
uint8_t pn532_i2c_newdata[16]; uint8_t pn532_i2c_newdata[16];
uint8_t pn532_i2c_newdata_len = 0;
#endif // USE_PN532_DATA_FUNCTION #endif // USE_PN532_DATA_FUNCTION
const uint8_t PROGMEM pn532_global_timeout = 10; const uint8_t PROGMEM pn532_global_timeout = 10;
@ -426,13 +427,24 @@ void PN532_ScanForTag(void)
} }
} }
if (pn532_i2c_function == 2) { if (pn532_i2c_function == 2) {
memcpy(&card_data,&pn532_i2c_newdata,sizeof(card_data)); boolean IsAlphaNumeric = true;
for (uint8_t i = 0;i < pn532_i2c_newdata_len;i++) {
if ((!isalpha(pn532_i2c_newdata[i])) || (!isdigit(pn532_i2c_newdata[i]))) {
IsAlphaNumeric = false;
}
}
if (IsAlphaNumeric) {
if (mifareclassic_WriteDataBlock(1, card_data)) { if (mifareclassic_WriteDataBlock(1, card_data)) {
memcpy(&card_data,&pn532_i2c_newdata,sizeof(card_data));
set_success = true; set_success = true;
snprintf_P(log_data, sizeof(log_data),"I2C: PN532 NFC - Data write successful"); snprintf_P(log_data, sizeof(log_data),"I2C: PN532 NFC - Data write successful");
AddLog(LOG_LEVEL_INFO); AddLog(LOG_LEVEL_INFO);
memcpy(&card_datas,&card_data,sizeof(card_data)); // Cast block 1 to a string memcpy(&card_datas,&card_data,sizeof(card_data)); // Cast block 1 to a string
} }
} else {
snprintf_P(log_data, sizeof(log_data),"I2C: PN532 NFC - Data must be alphanumeric");
AddLog(LOG_LEVEL_INFO);
}
} }
} else { } else {
sprintf(card_datas,"AUTHFAIL"); sprintf(card_datas,"AUTHFAIL");
@ -518,10 +530,10 @@ boolean PN532_Command(void)
return serviced; return serviced;
} }
sprintf(sub_string_tmp,subStr(sub_string, XdrvMailbox.data, ",", 2)); sprintf(sub_string_tmp,subStr(sub_string, XdrvMailbox.data, ",", 2));
uint8_t dlen = strlen(sub_string_tmp); pn532_i2c_newdata_len = strlen(sub_string_tmp);
if (dlen > 15) { dlen = 15; } if (pn532_i2c_newdata_len > 15) { pn532_i2c_newdata_len = 15; }
memcpy(&pn532_i2c_newdata,&sub_string_tmp,dlen); memcpy(&pn532_i2c_newdata,&sub_string_tmp,pn532_i2c_newdata_len);
pn532_i2c_newdata[dlen] = 0x00; // Null terminate the string pn532_i2c_newdata[pn532_i2c_newdata_len] = 0x00; // Null terminate the string
pn532_i2c_function = 2; pn532_i2c_function = 2;
snprintf_P(log_data, sizeof(log_data),"I2C: PN532 NFC - Next scanned tag data block 1 will be set to '%s'",pn532_i2c_newdata); snprintf_P(log_data, sizeof(log_data),"I2C: PN532 NFC - Next scanned tag data block 1 will be set to '%s'",pn532_i2c_newdata);
AddLog(LOG_LEVEL_INFO); AddLog(LOG_LEVEL_INFO);