75 static int contextMaxThreadCounter = PCSC_MAX_CONTEXT_THREADS;
76 static int contextMaxCardHandles = PCSC_MAX_CONTEXT_CARD_HANDLES;
96 static LONG MSGCleanupClient(
SCONTEXT *);
98 static void ContextThread(LPVOID pdwIndex);
102 static int contextsListhContext_seeker(
const void *el,
const void *key)
106 if ((el == NULL) || (key == NULL))
108 Log3(PCSC_LOG_CRITICAL,
"called with NULL pointer: el=%p, key=%p",
113 if (currentContext->hContext == *(int32_t *)key)
118 LONG ContextsInitialize(
int customMaxThreadCounter,
119 int customMaxThreadCardHandles)
123 if (customMaxThreadCounter != 0)
124 contextMaxThreadCounter = customMaxThreadCounter;
126 if (customMaxThreadCardHandles != 0)
127 contextMaxCardHandles = customMaxThreadCardHandles;
129 lrv = list_init(&contextsList);
132 Log2(PCSC_LOG_CRITICAL,
"list_init failed with return value: %d", lrv);
135 lrv = list_attributes_seeker(& contextsList, contextsListhContext_seeker);
138 Log2(PCSC_LOG_CRITICAL,
139 "list_attributes_seeker failed with return value: %d", lrv);
148 void ContextsDeinitialize(
void)
151 listSize = list_size(&contextsList);
152 Log2(PCSC_LOG_DEBUG,
"remaining threads: %d", listSize);
155 list_destroy(&contextsList);
178 listSize = list_size(&contextsList);
179 if (listSize >= contextMaxThreadCounter)
181 Log2(PCSC_LOG_CRITICAL,
"Too many context running: %d", listSize);
186 newContext = malloc(
sizeof(*newContext));
187 if (NULL == newContext)
189 Log1(PCSC_LOG_CRITICAL,
"Could not allocate new context");
192 memset(newContext, 0,
sizeof(*newContext));
197 lrv = list_init(&newContext->cardsList);
200 Log2(PCSC_LOG_CRITICAL,
"list_init failed with return value: %d", lrv);
205 list_attributes_copy(&newContext->cardsList, list_meter_int32_t, 1);
212 lrv = list_attributes_comparator(&newContext->cardsList,
213 list_comparator_int32_t);
216 Log2(PCSC_LOG_CRITICAL,
217 "list_attributes_comparator failed with return value: %d", lrv);
218 list_destroy(&newContext->cardsList);
224 lrv = list_append(&contextsList, newContext);
227 Log2(PCSC_LOG_CRITICAL,
"list_append failed with return value: %d",
229 list_destroy(&newContext->cardsList);
233 rv = ThreadCreate(&newContext->
pthThread, THREAD_ATTR_DETACHED,
234 (PCSCLITE_THREAD_FUNCTION( )) ContextThread, (LPVOID) newContext);
239 Log2(PCSC_LOG_CRITICAL,
"ThreadCreate failed: %s", strerror(rv));
240 lrv2 = list_delete(&contextsList, newContext);
242 Log2(PCSC_LOG_CRITICAL,
"list_delete failed with error %d", lrv2);
243 list_destroy(&newContext->cardsList);
260 (void)close(*pdwClientID);
295 "CANCEL_TRANSACTION",
299 "CMD_GET_READERS_STATE",
300 "CMD_WAIT_READER_STATE_CHANGE",
301 "CMD_STOP_WAITING_READER_STATE_CHANGE",
306 #define READ_BODY(v) \
307 if (header.size != sizeof(v)) { goto wrong_length; } \
308 ret = MessageReceive(&v, sizeof(v), filedes); \
309 if (ret != SCARD_S_SUCCESS) { Log2(PCSC_LOG_DEBUG, "Client die: %d", filedes); goto exit; }
311 #define WRITE_BODY(v) \
312 WRITE_BODY_WITH_COMMAND(CommandsText[header.command], v)
313 #define WRITE_BODY_WITH_COMMAND(command, v) \
314 Log4(PCSC_LOG_DEBUG, "%s rv=0x%X for client %d", command, v.rv, filedes); \
315 ret = MessageSend(&v, sizeof(v), filedes);
317 static void ContextThread(LPVOID newContext)
322 if (IsClientAuthorized(filedes,
"access_pcsc", NULL) == 0)
324 Log1(PCSC_LOG_CRITICAL,
"Rejected unauthorized PC/SC client");
329 Log1(PCSC_LOG_DEBUG,
"Authorized PC/SC client");
332 Log3(PCSC_LOG_DEBUG,
"Thread is started: dwClientID=%d, threadContext @%p",
343 Log2(PCSC_LOG_DEBUG,
"Client die: %d", filedes);
348 if ((header.command > CMD_ENUM_FIRST)
349 && (header.command < CMD_ENUM_LAST))
350 Log3(PCSC_LOG_DEBUG,
"Received command: %s from client %d",
351 CommandsText[header.command], filedes);
353 switch (header.command)
362 Log3(PCSC_LOG_DEBUG, "Client is protocol version %d:%d",
371 Log3(PCSC_LOG_CRITICAL,
"Client protocol is %d:%d",
372 veStr.major, veStr.minor);
373 Log3(PCSC_LOG_CRITICAL,
"Server protocol is %d:%d",
393 RFWaitForReaderInit();
397 ret =
MessageSend(readerStates,
sizeof(readerStates), filedes);
408 EHRegisterClientForEvent(filedes);
436 hContext = esStr.hContext;
439 esStr.hContext = hContext;
442 esStr.rv = MSGAddContext(esStr.hContext, threadContext);
457 reStr.rv = MSGRemoveContext(reStr.hContext, threadContext);
467 DWORD dwActiveProtocol;
471 coStr.szReader[sizeof(coStr.szReader)-1] = 0;
473 dwActiveProtocol = coStr.dwActiveProtocol;
475 if (IsClientAuthorized(filedes, "access_card", coStr.szReader) == 0)
477 Log2(PCSC_LOG_CRITICAL,
"Rejected unauthorized client for '%s'", coStr.szReader);
482 Log2(PCSC_LOG_DEBUG,
"Authorized client for '%s'", coStr.szReader);
486 coStr.dwShareMode, coStr.dwPreferredProtocols,
487 &hCard, &dwActiveProtocol);
490 coStr.dwActiveProtocol = dwActiveProtocol;
493 coStr.rv = MSGAddHandle(coStr.hContext, coStr.hCard,
503 DWORD dwActiveProtocol;
507 if (MSGCheckHandleAssociation(rcStr.hCard, threadContext))
511 rcStr.dwPreferredProtocols, rcStr.dwInitialization,
513 rcStr.dwActiveProtocol = dwActiveProtocol;
525 if (MSGCheckHandleAssociation(diStr.hCard, threadContext))
531 diStr.rv = MSGRemoveHandle(diStr.hCard, threadContext);
543 if (MSGCheckHandleAssociation(beStr.hCard, threadContext))
558 if (MSGCheckHandleAssociation(enStr.hCard, threadContext))
562 enStr.dwDisposition);
576 psTargetContext = (
SCONTEXT *) list_seek(&contextsList,
579 if (psTargetContext != NULL)
581 uint32_t fd = psTargetContext->dwClientID;
601 if (MSGCheckHandleAssociation(stStr.hCard, threadContext))
605 stStr.rv =
SCardStatus(stStr.hCard, NULL, NULL, NULL,
623 if (MSGCheckHandleAssociation(trStr.hCard, threadContext))
627 if ((trStr.pcbRecvLength > sizeof(pbRecvBuffer))
628 || (trStr.cbSendLength > sizeof(pbSendBuffer)))
629 goto buffer_overflow;
635 Log2(PCSC_LOG_DEBUG,
"Client die: %d", filedes);
639 ioSendPci.
dwProtocol = trStr.ioSendPciProtocol;
641 ioRecvPci.
dwProtocol = trStr.ioRecvPciProtocol;
643 cbRecvLength =
sizeof pbRecvBuffer;
646 pbSendBuffer, trStr.cbSendLength, &ioRecvPci,
647 pbRecvBuffer, &cbRecvLength);
649 if (cbRecvLength > trStr.pcbRecvLength)
655 trStr.ioSendPciProtocol = ioSendPci.
dwProtocol;
657 trStr.ioRecvPciProtocol = ioRecvPci.
dwProtocol;
659 trStr.pcbRecvLength = cbRecvLength;
665 ret =
MessageSend(pbRecvBuffer, cbRecvLength, filedes);
674 DWORD dwBytesReturned;
678 if (MSGCheckHandleAssociation(ctStr.hCard, threadContext))
682 if ((ctStr.cbRecvLength > sizeof(pbRecvBuffer))
683 || (ctStr.cbSendLength > sizeof(pbSendBuffer)))
685 goto buffer_overflow;
692 Log2(PCSC_LOG_DEBUG,
"Client die: %d", filedes);
696 dwBytesReturned = ctStr.dwBytesReturned;
698 ctStr.rv =
SCardControl(ctStr.hCard, ctStr.dwControlCode,
699 pbSendBuffer, ctStr.cbSendLength,
700 pbRecvBuffer, ctStr.cbRecvLength,
703 ctStr.dwBytesReturned = dwBytesReturned;
709 ret =
MessageSend(pbRecvBuffer, dwBytesReturned, filedes);
720 if (MSGCheckHandleAssociation(gsStr.hCard, threadContext))
724 if (gsStr.cbAttrLen > sizeof(gsStr.pbAttr))
725 goto buffer_overflow;
727 cbAttrLen = gsStr.cbAttrLen;
730 gsStr.pbAttr, &cbAttrLen);
732 gsStr.cbAttrLen = cbAttrLen;
744 if (MSGCheckHandleAssociation(gsStr.hCard, threadContext))
748 if (gsStr.cbAttrLen > sizeof(gsStr.pbAttr))
749 goto buffer_overflow;
752 gsStr.pbAttr, gsStr.cbAttrLen);
759 Log2(PCSC_LOG_CRITICAL, "Unknown command: %d", header.command);
767 Log2(PCSC_LOG_DEBUG,
"Client die: %d", filedes);
773 Log2(PCSC_LOG_DEBUG,
"Buffer overflow detected: %d", filedes);
776 Log2(PCSC_LOG_DEBUG,
"Wrong length: %d", filedes);
778 (void)close(filedes);
779 (void)MSGCleanupClient(threadContext);
780 (void)pthread_exit((LPVOID) NULL);
783 LONG MSGSignalClient(uint32_t filedes, LONG rv)
788 Log2(PCSC_LOG_DEBUG,
"Signal client: %d", filedes);
791 WRITE_BODY_WITH_COMMAND(
"SIGNAL", waStr)
798 threadContext->hContext = hContext;
807 if (threadContext->hContext != hContext)
811 while (list_size(&threadContext->cardsList) != 0)
820 ptr = list_get_at(&threadContext->cardsList, 0);
823 Log1(PCSC_LOG_CRITICAL,
"list_get_at failed");
826 hCard = *(int32_t *)ptr;
831 rv = RFReaderInfoById(hCard, &rContext);
841 if (hCard != hLockId)
856 rv =
SCardStatus(hCard, NULL, NULL, NULL, NULL, NULL, NULL);
865 lrv = list_delete_at(&threadContext->cardsList, 0);
867 Log2(PCSC_LOG_CRITICAL,
868 "list_delete_at failed with return value: %d", lrv);
870 UNREF_READER(rContext)
873 list_destroy(&threadContext->cardsList);
877 threadContext->hContext = 0;
887 if (threadContext->hContext == hContext)
896 listLength = list_size(&threadContext->cardsList);
897 if (listLength >= contextMaxCardHandles)
900 "Too many card handles for thread context @%p: %d (max is %d)"
901 "Restart pcscd with --max-card-handle-per-thread value",
902 threadContext, listLength, contextMaxCardHandles);
909 lrv = list_append(&threadContext->cardsList, &hCard);
912 Log2(PCSC_LOG_CRITICAL,
913 "list_append failed with return value: %d", lrv);
931 lrv = list_delete(&threadContext->cardsList, &hCard);
935 Log2(PCSC_LOG_CRITICAL,
"list_delete failed with error %d", lrv);
943 static LONG MSGCheckHandleAssociation(
SCARDHANDLE hCard,
948 if (0 == threadContext->hContext)
952 Log1(PCSC_LOG_CRITICAL,
"Invalidated handle");
957 list_index = list_locate(&threadContext->cardsList, &hCard);
963 Log1(PCSC_LOG_ERROR,
"Client failed to authenticate");
973 static LONG MSGCleanupClient(
SCONTEXT * threadContext)
978 if (threadContext->hContext != 0)
981 (void)MSGRemoveContext(threadContext->hContext, threadContext);
985 "Thread is stopping: dwClientID=%d, threadContext @%p",
991 memset((
void*) threadContext, 0,
sizeof(
SCONTEXT));
992 Log2(PCSC_LOG_DEBUG,
"Freeing SCONTEXT @%p", threadContext);
995 lrv = list_delete(&contextsList, threadContext);
996 listSize = list_size(&contextsList);
999 Log2(PCSC_LOG_CRITICAL,
"list_delete failed with error %x", lrv);
1001 free(threadContext);
1006 Log2(PCSC_LOG_DEBUG,
"Starting suicide alarm in %d seconds",
1007 TIME_BEFORE_SUICIDE);
1008 alarm(TIME_BEFORE_SUICIDE);
LONG EHUnregisterClientForEvent(int32_t filedes)
Unregister a client and log an error if the client is not found.
#define SCARD_E_INVALID_VALUE
One or more of the supplied parameters values could not be properly interpreted.
used by SCardBeginTransaction()
contained in SCARD_CONNECT Messages.
wait for a reader state change
contained in SCARD_CANCEL Messages.
contained in SCARD_TRANSMIT Messages.
volatile SCARDHANDLE hLockId
Lock Id.
#define SCARD_S_SUCCESS
No error was encountered.
contained in SCARD_END_TRANSACTION Messages.
#define SCARD_E_NO_SERVICE
The Smart card resource manager is not running.
get the client/server protocol version
LONG CreateContextThread(uint32_t *pdwClientID)
Creates threads to handle messages received from Clients.
pthread_t pthThread
Event polling thread's ID.
used by SCardEstablishContext()
int32_t minor
IPC minor PROTOCOL_VERSION_MINOR.
used by SCardEndTransaction()
PCSC_API LONG SCardEstablishContext(DWORD dwScope, LPCVOID pvReserved1, LPCVOID pvReserved2, LPSCARDCONTEXT phContext)
Creates an Application Context to the PC/SC Resource Manager.
unsigned long cbPciLength
Protocol Control Inf Length.
#define SCARD_LEAVE_CARD
Do nothing on close.
This handles abstract system level calls.
char AutoExit
Represents an Application Context on the Server side.
int SYS_Sleep(int)
Makes the current process sleep for some seconds.
uint32_t dwClientID
Connection ID used to reference the Client.
This demarshalls functions over the message queue and keeps track of clients and their handles...
#define PROTOCOL_VERSION_MAJOR
Major version of the current message protocol.
contained in SCARD_DISCONNECT Messages.
static list_t contextsList
Context tracking list.
PCSC_API LONG SCardGetAttrib(SCARDHANDLE hCard, DWORD dwAttrId, LPBYTE pbAttr, LPDWORD pcbAttrLen)
Get an attribute from the IFD Handler (reader driver).
Information contained in SCARD_RELEASE_CONTEXT Messages.
PCSC_API LONG SCardDisconnect(SCARDHANDLE hCard, DWORD dwDisposition)
Terminates a connection made through SCardConnect().
contained in SCARD_BEGIN_TRANSACTION Messages.
Information contained in SCARD_ESTABLISH_CONTEXT Messages.
Information transmitted in CMD_VERSION Messages.
INTERNAL LONG MessageReceive(void *buffer_void, uint64_t buffer_size, int32_t filedes)
Called by the Client to get the reponse from the server or vice-versa.
used by SCardReleaseContext()
LONG SCARDCONTEXT
hContext returned by SCardEstablishContext()
#define SCARD_E_NO_MEMORY
Not enough memory available to complete this command.
contained in SCARD_STATUS Messages.
contained in SCARD_RECONNECT Messages.
unsigned long dwProtocol
Protocol identifier.
#define PCSCLITE_MAX_READERS_CONTEXTS
Maximum readers context (a slot is count as a reader)
contained in SCARD_GET_ATTRIB and Messages.
This defines some structures and #defines to be used over the transport layer.
Information contained in CMD_WAIT_READER_STATE_CHANGE Messages.
#define SCARD_W_RESET_CARD
The smart card has been reset, so any shared state information is invalid.
PCSC_API LONG SCardReconnect(SCARDHANDLE hCard, DWORD dwShareMode, DWORD dwPreferredProtocols, DWORD dwInitialization, LPDWORD pdwActiveProtocol)
Reestablishes a connection to a reader that was previously connected to using SCardConnect().
#define MAX_BUFFER_SIZE_EXTENDED
enhanced (64K + APDU + Lc + Le + SW) Tx/Rx Buffer
static READER_STATE readerStates[PCSCLITE_MAX_READERS_CONTEXTS]
Area used to read status information about the readers.
LONG EHTryToUnregisterClientForEvent(int32_t filedes)
Try to unregisted a client If no client is found then do not log an error.
This handles card insertion/removal events, updates ATR, protocol, and status information.
PCSC_API LONG SCardConnect(SCARDCONTEXT hContext, LPCSTR szReader, DWORD dwShareMode, DWORD dwPreferredProtocols, LPSCARDHANDLE phCard, LPDWORD pdwActiveProtocol)
Establishes a connection to the reader specified in * szReader.
stop waiting for a reader state change
PCSC_API LONG SCardSetAttrib(SCARDHANDLE hCard, DWORD dwAttrId, LPCBYTE pbAttr, DWORD cbAttrLen)
Set an attribute of the IFD Handler.
#define SCARD_W_REMOVED_CARD
The smart card has been removed, so further communication is not possible.
#define SCARD_RESET_CARD
Reset on close.
LONG SCARDHANDLE
hCard returned by SCardConnect()
#define SCARD_E_INSUFFICIENT_BUFFER
The data buffer to receive returned data is too small for the returned data.
static const char * CommandsText[]
Handles messages received from Clients.
#define SCARD_E_CANCELLED
The action was cancelled by an SCardCancel request.
#define PROTOCOL_VERSION_MINOR
Minor version of the current message protocol.
PCSC_API LONG SCardBeginTransaction(SCARDHANDLE hCard)
Establishes a temporary exclusive access mode for doing a serie of commands in a transaction.
This keeps a list of defines for pcsc-lite.
Protocol Control Information (PCI)
PCSC_API LONG SCardControl(SCARDHANDLE hCard, DWORD dwControlCode, LPCVOID pbSendBuffer, DWORD cbSendLength, LPVOID pbRecvBuffer, DWORD cbRecvLength, LPDWORD lpBytesReturned)
Sends a command directly to the IFD Handler (reader driver) to be processed by the reader...
Define an exported public reader state structure so each application gets instant notification of cha...
INTERNAL LONG MessageSend(void *buffer_void, uint64_t buffer_size, int32_t filedes)
Sends a menssage from client to server or vice-versa.
used by SCardDisconnect()
contained in SCARD_CONTROL Messages.
This keeps track of a list of currently available reader structures.
PCSC_API LONG SCardStatus(SCARDHANDLE hCard, LPSTR mszReaderName, LPDWORD pcchReaderLen, LPDWORD pdwState, LPDWORD pdwProtocol, LPBYTE pbAtr, LPDWORD pcbAtrLen)
Returns the current status of the reader connected to by hCard.
int32_t major
IPC major PROTOCOL_VERSION_MAJOR.
PCSC_API LONG SCardEndTransaction(SCARDHANDLE hCard, DWORD dwDisposition)
Ends a previously begun transaction.
PCSC_API LONG SCardTransmit(SCARDHANDLE hCard, const SCARD_IO_REQUEST *pioSendPci, LPCBYTE pbSendBuffer, DWORD cbSendLength, SCARD_IO_REQUEST *pioRecvPci, LPBYTE pbRecvBuffer, LPDWORD pcbRecvLength)
Sends an APDU to the smart card contained in the reader connected to by SCardConnect().
pthread_mutex_t cardsList_lock
lock for the above list
pthread_mutex_t contextsList_lock
lock for the above list
#define SCARD_E_INVALID_HANDLE
The supplied handle was invalid.
This handles smart card reader communications.
PCSC_API LONG SCardReleaseContext(SCARDCONTEXT hContext)
Destroys a communication context to the PC/SC Resource Manager.