Unicode C
Unicode C
PC/SC Find Inserted Smart Cards
See more SCard Examples
Get detailed information about each reader including whether or not a smart card is currently inserted in the reader. (Also includes USB tokens.)Note: This functionality was introduced in Chilkat v9.5.0.87.
Chilkat Unicode C Downloads
#include <C_CkSCardW.h>
#include <C_CkJsonObjectW.h>
void ChilkatSample(void)
{
BOOL success;
HCkSCardW scard;
HCkJsonObjectW json;
const wchar_t *name;
const wchar_t *state;
const wchar_t *vendorName;
const wchar_t *systemName;
const wchar_t *cardAtr;
const wchar_t *cardWindowsMiniDriver;
const wchar_t *cardWindowsCryptoProvider;
const wchar_t *cardWindowsKeyStorageProvider;
const wchar_t *serialNumber;
int i;
int count_i;
success = FALSE;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
scard = CkSCardW_Create();
// First establish a context to the PC/SC Resource Manager
success = CkSCardW_EstablishContext(scard,L"user");
if (success == FALSE) {
wprintf(L"%s\n",CkSCardW_lastErrorText(scard));
CkSCardW_Dispose(scard);
return;
}
// Get JSON containing information about the smartcards currently inserted into readers.
// This also includes information about USB security tokens.
json = CkJsonObjectW_Create();
success = CkSCardW_FindSmartcards(scard,json);
if (success == FALSE) {
wprintf(L"%s\n",CkSCardW_lastErrorText(scard));
CkSCardW_Dispose(scard);
CkJsonObjectW_Dispose(json);
return;
}
CkJsonObjectW_putEmitCompact(json,FALSE);
wprintf(L"%s\n",CkJsonObjectW_emit(json));
// Here is sample output:
// See below for sample code to parse the JSON.
// You can see which readers have a card inserted by the "state".
// If the state contains "present", then a card is inserted into the reader.
// (USB tokens will typically always have a state containing "present")
// Also, the ATR of the card inserted into the reader is indicated by "atr".
// {
// "reader": [
// {
// "name": "Alcor Micro USB Smart Card Reader 0",
// "state": "present,inuse",
// "vendorName": "Alcor Micro",
// "systemName": "Alcor Micro USB Smart Card Reader 0",
// "card": {
// "atr": "3B7F96000080318065B0855956FB120FFE829000",
// "windows": {
// "miniDriver": "AxaltoCM.dll",
// "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
// "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
// }
// }
// },
// {
// "name": "FS USB Token 0",
// "state": "present,inuse",
// "vendorName": "FS",
// "serialNumber": "3F",
// "systemName": "FS USB Token 0",
// "card": {
// "atr": "3B9F958131FE9F006646530534002571DF000000000012",
// "windows": {
// "miniDriver": "eps2003csp11",
// "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
// "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
// }
// }
// },
// {
// "name": "FT Java Token 0",
// "state": "present",
// "vendorName": "FT",
// "serialNumber": "3F",
// "systemName": "FT Java Token 0",
// "card": {
// "atr": "3BFC180000813180459067464A00642D70C172FEE0FE",
// "windows": {
// "miniDriver": "tagliov70px.dll",
// "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
// "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
// }
// }
// },
// {
// "name": "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0",
// "state": "present",
// "vendorName": "SCM Microsystems Inc.",
// "serialNumber": "333130303330",
// "systemName": "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0",
// "card": {
// "atr": "3BFC180000813180459067464A00641606F2727E00E0",
// "windows": {
// "miniDriver": "tagliov70px.dll",
// "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
// "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
// }
// }
// },
// {
// "name": "Yubico YubiKey OTP+FIDO+CCID 0",
// "state": "present",
// "vendorName": "Yubico",
// "serialNumber": "3F",
// "systemName": "Yubico YubiKey OTP+FIDO+CCID 0",
// "card": {
// "atr": "3BFD1300008131FE158073C021C057597562694B657940",
// "windows": {
// "miniDriver": "msclmd.dll",
// "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
// "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
// }
// }
// }
// ]
// }
// Use this online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON
// Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
// See this example explaining how this memory should be used: const char * functions.
i = 0;
count_i = CkJsonObjectW_SizeOfArray(json,L"reader");
while (i < count_i) {
CkJsonObjectW_putI(json,i);
name = CkJsonObjectW_stringOf(json,L"reader[i].name");
state = CkJsonObjectW_stringOf(json,L"reader[i].state");
vendorName = CkJsonObjectW_stringOf(json,L"reader[i].vendorName");
systemName = CkJsonObjectW_stringOf(json,L"reader[i].systemName");
cardAtr = CkJsonObjectW_stringOf(json,L"reader[i].card.atr");
cardWindowsMiniDriver = CkJsonObjectW_stringOf(json,L"reader[i].card.windows.miniDriver");
cardWindowsCryptoProvider = CkJsonObjectW_stringOf(json,L"reader[i].card.windows.cryptoProvider");
cardWindowsKeyStorageProvider = CkJsonObjectW_stringOf(json,L"reader[i].card.windows.keyStorageProvider");
serialNumber = CkJsonObjectW_stringOf(json,L"reader[i].serialNumber");
i = i + 1;
}
// Applications should always release the context when finished.
success = CkSCardW_ReleaseContext(scard);
if (success == FALSE) {
wprintf(L"%s\n",CkSCardW_lastErrorText(scard));
}
CkSCardW_Dispose(scard);
CkJsonObjectW_Dispose(json);
}