53 static int contextMaxThreadCounter = PCSC_MAX_CONTEXT_THREADS;
54 static int contextMaxCardHandles = PCSC_MAX_CONTEXT_CARD_HANDLES;
74 static LONG MSGCleanupClient(
SCONTEXT *);
76 static void ContextThread(LPVOID pdwIndex);
80 static int contextsListhContext_seeker(
const void *el,
const void *key)
84 if ((el == NULL) || (key == NULL))
86 Log3(PCSC_LOG_CRITICAL,
"called with NULL pointer: el=%p, key=%p",
91 if (currentContext->hContext == *(int32_t *)key)
96 LONG ContextsInitialize(
int customMaxThreadCounter,
97 int customMaxThreadCardHandles)
101 if (customMaxThreadCounter != 0)
102 contextMaxThreadCounter = customMaxThreadCounter;
104 if (customMaxThreadCardHandles != 0)
105 contextMaxCardHandles = customMaxThreadCardHandles;
107 lrv = list_init(&contextsList);
110 Log2(PCSC_LOG_CRITICAL,
"list_init failed with return value: %d", lrv);
113 lrv = list_attributes_seeker(& contextsList, contextsListhContext_seeker);
116 Log2(PCSC_LOG_CRITICAL,
117 "list_attributes_seeker failed with return value: %d", lrv);
126 void ContextsDeinitialize(
void)
129 listSize = list_size(&contextsList);
130 Log2(PCSC_LOG_DEBUG,
"remaining threads: %d", listSize);
154 listSize = list_size(&contextsList);
155 if (listSize >= contextMaxThreadCounter)
157 Log2(PCSC_LOG_CRITICAL,
"Too many context running: %d", listSize);
162 newContext = malloc(
sizeof(*newContext));
163 if (NULL == newContext)
165 Log1(PCSC_LOG_CRITICAL,
"Could not allocate new context");
168 memset(newContext, 0,
sizeof(*newContext));
173 lrv = list_init(&newContext->cardsList);
176 Log2(PCSC_LOG_CRITICAL,
"list_init failed with return value: %d", lrv);
181 list_attributes_copy(&newContext->cardsList, list_meter_int32_t, 1);
188 lrv = list_attributes_comparator(&newContext->cardsList,
189 list_comparator_int32_t);
192 Log2(PCSC_LOG_CRITICAL,
193 "list_attributes_comparator failed with return value: %d", lrv);
194 list_destroy(&newContext->cardsList);
200 lrv = list_append(&contextsList, newContext);
203 Log2(PCSC_LOG_CRITICAL,
"list_append failed with return value: %d",
205 list_destroy(&newContext->cardsList);
209 rv = ThreadCreate(&newContext->
pthThread, THREAD_ATTR_DETACHED,
210 (PCSCLITE_THREAD_FUNCTION( )) ContextThread, (LPVOID) newContext);
215 Log2(PCSC_LOG_CRITICAL,
"ThreadCreate failed: %s", strerror(rv));
216 lrv2 = list_delete(&contextsList, newContext);
218 Log2(PCSC_LOG_CRITICAL,
"list_delete failed with error %d", lrv2);
219 list_destroy(&newContext->cardsList);
236 (void)close(*pdwClientID);
271 "CANCEL_TRANSACTION",
275 "CMD_GET_READERS_STATE",
276 "CMD_WAIT_READER_STATE_CHANGE",
277 "CMD_STOP_WAITING_READER_STATE_CHANGE",
282 #define READ_BODY(v) \
283 if (header.size != sizeof(v)) { goto wrong_length; } \
284 ret = MessageReceive(&v, sizeof(v), filedes); \
285 if (ret != SCARD_S_SUCCESS) { Log2(PCSC_LOG_DEBUG, "Client die: %d", filedes); goto exit; }
287 #define WRITE_BODY(v) \
288 WRITE_BODY_WITH_COMMAND(CommandsText[header.command], v)
289 #define WRITE_BODY_WITH_COMMAND(command, v) \
290 Log4(PCSC_LOG_DEBUG, "%s rv=0x%X for client %d", command, v.rv, filedes); \
291 ret = MessageSend(&v, sizeof(v), filedes);
293 static void ContextThread(LPVOID newContext)
298 Log3(PCSC_LOG_DEBUG,
"Thread is started: dwClientID=%d, threadContext @%p",
309 Log2(PCSC_LOG_DEBUG,
"Client die: %d", filedes);
314 if ((header.command > CMD_ENUM_FIRST)
315 && (header.command < CMD_ENUM_LAST))
316 Log3(PCSC_LOG_DEBUG,
"Received command: %s from client %d",
317 CommandsText[header.command], filedes);
319 switch (header.command)
328 Log3(PCSC_LOG_DEBUG, "Client is protocol version %d:%d",
337 Log3(PCSC_LOG_CRITICAL,
"Client protocol is %d:%d",
338 veStr.major, veStr.minor);
339 Log3(PCSC_LOG_CRITICAL,
"Server protocol is %d:%d",
359 RFWaitForReaderInit();
363 ret =
MessageSend(readerStates,
sizeof(readerStates), filedes);
374 EHRegisterClientForEvent(filedes);
402 hContext = esStr.hContext;
405 esStr.hContext = hContext;
408 esStr.rv = MSGAddContext(esStr.hContext, threadContext);
423 reStr.rv = MSGRemoveContext(reStr.hContext, threadContext);
433 DWORD dwActiveProtocol;
438 dwActiveProtocol = coStr.dwActiveProtocol;
441 coStr.dwShareMode, coStr.dwPreferredProtocols,
442 &hCard, &dwActiveProtocol);
445 coStr.dwActiveProtocol = dwActiveProtocol;
448 coStr.rv = MSGAddHandle(coStr.hContext, coStr.hCard,
458 DWORD dwActiveProtocol;
462 if (MSGCheckHandleAssociation(rcStr.hCard, threadContext))
466 rcStr.dwPreferredProtocols, rcStr.dwInitialization,
468 rcStr.dwActiveProtocol = dwActiveProtocol;
480 if (MSGCheckHandleAssociation(diStr.hCard, threadContext))
486 diStr.rv = MSGRemoveHandle(diStr.hCard, threadContext);
498 if (MSGCheckHandleAssociation(beStr.hCard, threadContext))
513 if (MSGCheckHandleAssociation(enStr.hCard, threadContext))
517 enStr.dwDisposition);
531 psTargetContext = (
SCONTEXT *) list_seek(&contextsList,
534 if (psTargetContext != NULL)
536 uint32_t fd = psTargetContext->dwClientID;
552 if (MSGCheckHandleAssociation(stStr.hCard, threadContext))
556 stStr.rv =
SCardStatus(stStr.hCard, NULL, NULL, NULL,
574 if (MSGCheckHandleAssociation(trStr.hCard, threadContext))
578 if ((trStr.pcbRecvLength > sizeof(pbRecvBuffer))
579 || (trStr.cbSendLength > sizeof(pbSendBuffer)))
580 goto buffer_overflow;
586 Log2(PCSC_LOG_DEBUG,
"Client die: %d", filedes);
590 ioSendPci.
dwProtocol = trStr.ioSendPciProtocol;
592 ioRecvPci.
dwProtocol = trStr.ioRecvPciProtocol;
594 cbRecvLength = trStr.pcbRecvLength;
597 pbSendBuffer, trStr.cbSendLength, &ioRecvPci,
598 pbRecvBuffer, &cbRecvLength);
600 trStr.ioSendPciProtocol = ioSendPci.
dwProtocol;
602 trStr.ioRecvPciProtocol = ioRecvPci.
dwProtocol;
604 trStr.pcbRecvLength = cbRecvLength;
610 ret =
MessageSend(pbRecvBuffer, cbRecvLength, filedes);
619 DWORD dwBytesReturned;
623 if (MSGCheckHandleAssociation(ctStr.hCard, threadContext))
627 if ((ctStr.cbRecvLength > sizeof(pbRecvBuffer))
628 || (ctStr.cbSendLength > sizeof(pbSendBuffer)))
630 goto buffer_overflow;
637 Log2(PCSC_LOG_DEBUG,
"Client die: %d", filedes);
641 dwBytesReturned = ctStr.dwBytesReturned;
643 ctStr.rv =
SCardControl(ctStr.hCard, ctStr.dwControlCode,
644 pbSendBuffer, ctStr.cbSendLength,
645 pbRecvBuffer, ctStr.cbRecvLength,
648 ctStr.dwBytesReturned = dwBytesReturned;
654 ret =
MessageSend(pbRecvBuffer, dwBytesReturned, filedes);
665 if (MSGCheckHandleAssociation(gsStr.hCard, threadContext))
669 if (gsStr.cbAttrLen > sizeof(gsStr.pbAttr))
670 goto buffer_overflow;
672 cbAttrLen = gsStr.cbAttrLen;
675 gsStr.pbAttr, &cbAttrLen);
677 gsStr.cbAttrLen = cbAttrLen;
689 if (MSGCheckHandleAssociation(gsStr.hCard, threadContext))
693 if (gsStr.cbAttrLen > sizeof(gsStr.pbAttr))
694 goto buffer_overflow;
697 gsStr.pbAttr, gsStr.cbAttrLen);
704 Log2(PCSC_LOG_CRITICAL, "Unknown command: %d", header.command);
712 Log2(PCSC_LOG_DEBUG,
"Client die: %d", filedes);
718 Log2(PCSC_LOG_DEBUG,
"Buffer overflow detected: %d", filedes);
721 Log2(PCSC_LOG_DEBUG,
"Wrong length: %d", filedes);
723 (void)close(filedes);
724 (void)MSGCleanupClient(threadContext);
725 (void)pthread_exit((LPVOID) NULL);
728 LONG MSGSignalClient(uint32_t filedes, LONG rv)
733 Log2(PCSC_LOG_DEBUG,
"Signal client: %d", filedes);
736 WRITE_BODY_WITH_COMMAND(
"SIGNAL", waStr)
743 threadContext->hContext = hContext;
752 if (threadContext->hContext != hContext)
756 while (list_size(&threadContext->cardsList) != 0)
765 ptr = list_get_at(&threadContext->cardsList, 0);
768 Log1(PCSC_LOG_CRITICAL,
"list_get_at failed");
771 hCard = *(int32_t *)ptr;
776 rv = RFReaderInfoById(hCard, &rContext);
786 if (hCard != hLockId)
801 rv =
SCardStatus(hCard, NULL, NULL, NULL, NULL, NULL, NULL);
810 lrv = list_delete_at(&threadContext->cardsList, 0);
812 Log2(PCSC_LOG_CRITICAL,
813 "list_delete_at failed with return value: %d", lrv);
815 UNREF_READER(rContext)
818 list_destroy(&threadContext->cardsList);
822 threadContext->hContext = 0;
832 if (threadContext->hContext == hContext)
841 listLength = list_size(&threadContext->cardsList);
842 if (listLength >= contextMaxCardHandles)
845 "Too many card handles for thread context @%p: %d (max is %d)"
846 "Restart pcscd with --max-card-handle-per-thread value",
847 threadContext, listLength, contextMaxCardHandles);
852 lrv = list_append(&threadContext->cardsList, &hCard);
855 Log2(PCSC_LOG_CRITICAL,
856 "list_append failed with return value: %d", lrv);
874 lrv = list_delete(&threadContext->cardsList, &hCard);
878 Log2(PCSC_LOG_CRITICAL,
"list_delete failed with error %d", lrv);
886 static LONG MSGCheckHandleAssociation(
SCARDHANDLE hCard,
891 if (0 == threadContext->hContext)
895 Log1(PCSC_LOG_CRITICAL,
"Invalidated handle");
900 list_index = list_locate(&threadContext->cardsList, &hCard);
906 Log1(PCSC_LOG_ERROR,
"Client failed to authenticate");
916 static LONG MSGCleanupClient(
SCONTEXT * threadContext)
921 if (threadContext->hContext != 0)
924 (void)MSGRemoveContext(threadContext->hContext, threadContext);
928 "Thread is stopping: dwClientID=%d, threadContext @%p",
934 memset((
void*) threadContext, 0,
sizeof(
SCONTEXT));
935 Log2(PCSC_LOG_DEBUG,
"Freeing SCONTEXT @%p", threadContext);
938 lrv = list_delete(&contextsList, threadContext);
939 listSize = list_size(&contextsList);
942 Log2(PCSC_LOG_CRITICAL,
"list_delete failed with error %x", lrv);
949 Log2(PCSC_LOG_DEBUG,
"Starting suicide alarm in %d seconds",
950 TIME_BEFORE_SUICIDE);
951 alarm(TIME_BEFORE_SUICIDE);
LONG EHUnregisterClientForEvent(int32_t filedes)
Unregister a client and log an error if the client is not found.
used by SCardBeginTransaction()
contained in SCARD_CONNECT Messages.
#define SCARD_E_CANCELLED
The action was cancelled by an SCardCancel request.
wait for a reader state change
contained in SCARD_CANCEL Messages.
contained in SCARD_TRANSMIT Messages.
volatile SCARDHANDLE hLockId
Lock Id.
contained in SCARD_END_TRANSACTION Messages.
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.
#define SCARD_E_NO_SERVICE
The Smart card resource manager is not running.
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.
#define SCARD_E_INVALID_HANDLE
The supplied handle was invalid.
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_INVALID_VALUE
One or more of the supplied parameters values could not be properly interpreted.
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.
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.
#define SCARD_W_REMOVED_CARD
The smart card has been removed, so further communication is not possible.
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 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.
PCSC_API LONG SCardSetAttrib(SCARDHANDLE hCard, DWORD dwAttrId, LPCBYTE pbAttr, DWORD cbAttrLen)
Set an attribute of the IFD Handler.
#define SCARD_RESET_CARD
Reset on close.
LONG SCARDHANDLE
hCard returned by SCardConnect()
static const char * CommandsText[]
Handles messages received from Clients.
#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.
#define SCARD_W_RESET_CARD
The smart card has been reset, so any shared state information is invalid.
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()
#define SCARD_E_NO_MEMORY
Not enough memory available to complete this command.
contained in SCARD_CONTROL Messages.
This keeps track of a list of currently available reader structures.
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_S_SUCCESS
error codes from http://msdn.microsoft.com/en-us/library/aa924526.aspx
This handles smart card reader communications.
PCSC_API LONG SCardReleaseContext(SCARDCONTEXT hContext)
Destroys a communication context to the PC/SC Resource Manager.