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readerfactory.c
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readerfactory.c
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/*
* MUSCLE SmartCard Development ( https://pcsclite.apdu.fr/ )
*
* Copyright (C) 1999-2004
* David Corcoran <[email protected]>
* Copyright (C) 2003-2004
* Damien Sauveron <[email protected]>
* Copyright (C) 2002-2024
* Ludovic Rousseau <[email protected]>
* Copyright (C) 2009
* Jean-Luc Giraud <[email protected]>
*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file
* @brief This keeps track of a list of currently available reader structures.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdatomic.h>
#include <stdbool.h>
#include "misc.h"
#include "pcscd.h"
#include "debuglog.h"
#include "readerfactory.h"
#include "dyn_generic.h"
#include "sys_generic.h"
#include "eventhandler.h"
#include "ifdwrapper.h"
#include "hotplug.h"
#include "configfile.h"
#include "utils.h"
static READER_CONTEXT * sReadersContexts[PCSCLITE_MAX_READERS_CONTEXTS];
READER_STATE readerStates[PCSCLITE_MAX_READERS_CONTEXTS];
static int maxReaderHandles = PCSC_MAX_READER_HANDLES;
static DWORD dwNumReadersContexts = 0;
#ifdef USE_SERIAL
static char *ConfigFile = NULL;
static int ConfigFileCRC = 0;
#endif
static pthread_mutex_t LockMutex = PTHREAD_MUTEX_INITIALIZER;
static LONG removeReader(READER_CONTEXT * sReader);
static int RDR_CLIHANDLES_seeker(const void *el, const void *key)
{
const RDR_CLIHANDLES *rdrCliHandles = el;
if ((el == NULL) || (key == NULL))
{
Log3(PCSC_LOG_CRITICAL,
"RDR_CLIHANDLES_seeker called with NULL pointer: el=%p, key=%p",
el, key);
return 0;
}
if (rdrCliHandles->hCard == *(SCARDHANDLE *)key)
return 1;
return 0;
}
LONG _RefReader(READER_CONTEXT * sReader)
{
if (0 == sReader->reference)
return SCARD_E_READER_UNAVAILABLE;
sReader->reference += 1;
return SCARD_S_SUCCESS;
}
LONG _UnrefReader(READER_CONTEXT * sReader)
{
if (0 == sReader->reference)
return SCARD_E_READER_UNAVAILABLE;
sReader->reference -= 1;
if (0 == sReader->reference)
removeReader(sReader);
return SCARD_S_SUCCESS;
}
LONG RFAllocateReaderSpace(unsigned int customMaxReaderHandles)
{
int i; /* Counter */
if (customMaxReaderHandles != 0)
maxReaderHandles = customMaxReaderHandles;
/* Allocate each reader structure */
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
{
sReadersContexts[i] = malloc(sizeof(READER_CONTEXT));
sReadersContexts[i]->vHandle = NULL;
atomic_init(&sReadersContexts[i]->hLockId, 0);
atomic_init(&sReadersContexts[i]->contexts, 0);
atomic_init(&sReadersContexts[i]->reference, 0);
/* Zero out each value in the struct */
memset(readerStates[i].readerName, 0, MAX_READERNAME);
memset(readerStates[i].cardAtr, 0, MAX_ATR_SIZE);
readerStates[i].eventCounter = 0;
readerStates[i].readerState = 0;
readerStates[i].readerSharing = 0;
readerStates[i].cardAtrLength = READER_NOT_INITIALIZED;
readerStates[i].cardProtocol = SCARD_PROTOCOL_UNDEFINED;
sReadersContexts[i]->readerState = &readerStates[i];
}
/* Create public event structures */
return EHInitializeEventStructures();
}
LONG RFAddReader(const char *readerNameLong, int port, const char *library,
const char *device)
{
DWORD dwContext = 0, dwGetSize;
UCHAR ucGetData[1], ucThread[1];
LONG rv, parentNode;
int i, j;
int lrv = 0;
char *readerName = NULL;
if ((readerNameLong == NULL) || (library == NULL) || (device == NULL))
return SCARD_E_INVALID_VALUE;
#ifdef FILTER_NAMES
const char *ro_filter = SYS_GetEnv("PCSCLITE_FILTER_IGNORE_READER_NAMES");
if (ro_filter)
{
char *filter, *next;
/* get a RW copy of the env string */
filter = alloca(strlen(ro_filter)+1);
strcpy(filter, ro_filter);
while (filter)
{
/* ':' is the separator */
next = strchr(filter, ':');
if (next)
{
/* NUL terminate the current pattern */
*next = '\0';
}
/* if filter is non empty and found in the reader name */
if (*filter && strstr(readerNameLong, filter))
{
Log3(PCSC_LOG_ERROR,
"Reader name \"%s\" contains \"%s\": ignored",
readerNameLong, filter);
return SCARD_E_READER_UNAVAILABLE;
}
if (next)
/* next pattern */
filter = next+1;
else
/* end */
filter = NULL;
}
}
#endif
/* allocate memory that is automatically freed */
readerName = alloca(strlen(readerNameLong)+1);
strcpy(readerName, readerNameLong);
/* Reader name too long? also count " 00 00"*/
if (strlen(readerName) > MAX_READERNAME - sizeof(" 00 00"))
{
Log3(PCSC_LOG_ERROR,
"Reader name too long: %zd chars instead of max %zd. Truncating!",
strlen(readerName), MAX_READERNAME - sizeof(" 00 00"));
readerName[MAX_READERNAME - sizeof(" 00 00")] = '\0';
}
/* Same name, same port, same device - duplicate reader cannot be used */
if (dwNumReadersContexts != 0)
{
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
{
if (sReadersContexts[i]->vHandle != 0)
{
char lpcStripReader[MAX_READERNAME];
int tmplen;
/* get the reader name without the reader and slot numbers */
strncpy(lpcStripReader,
sReadersContexts[i]->readerState->readerName,
sizeof(lpcStripReader));
tmplen = strlen(lpcStripReader);
lpcStripReader[tmplen - 6] = 0;
if ((strcmp(readerName, lpcStripReader) == 0)
&& (port == sReadersContexts[i]->port)
&& (strcmp(device, sReadersContexts[i]->device) == 0))
{
Log1(PCSC_LOG_ERROR, "Duplicate reader found.");
return SCARD_E_DUPLICATE_READER;
}
}
}
}
/* We must find an empty slot to put the reader structure */
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
{
if (sReadersContexts[i]->vHandle == 0)
{
dwContext = i;
break;
}
}
if (i == PCSCLITE_MAX_READERS_CONTEXTS)
{
/* No more spots left return */
return SCARD_E_NO_MEMORY;
}
/* Check and set the readername to see if it must be enumerated */
parentNode = RFSetReaderName(sReadersContexts[dwContext], readerName,
library, port);
if (parentNode < -1)
return SCARD_E_NO_MEMORY;
sReadersContexts[dwContext]->library = strdup(library);
sReadersContexts[dwContext]->device = strdup(device);
sReadersContexts[dwContext]->version = 0;
sReadersContexts[dwContext]->port = port;
sReadersContexts[dwContext]->mMutex = NULL;
sReadersContexts[dwContext]->contexts = 0;
sReadersContexts[dwContext]->pthThread = 0;
sReadersContexts[dwContext]->hLockId = 0;
sReadersContexts[dwContext]->LockCount = 0;
sReadersContexts[dwContext]->vHandle = NULL;
sReadersContexts[dwContext]->pFeeds = NULL;
sReadersContexts[dwContext]->pMutex = NULL;
sReadersContexts[dwContext]->pthCardEvent = NULL;
lrv = list_init(&sReadersContexts[dwContext]->handlesList);
if (lrv < 0)
{
Log2(PCSC_LOG_CRITICAL, "list_init failed with return value: %d", lrv);
return SCARD_E_NO_MEMORY;
}
lrv = list_attributes_seeker(&sReadersContexts[dwContext]->handlesList,
RDR_CLIHANDLES_seeker);
if (lrv < 0)
{
Log2(PCSC_LOG_CRITICAL,
"list_attributes_seeker failed with return value: %d", lrv);
return SCARD_E_NO_MEMORY;
}
(void)pthread_mutex_init(&sReadersContexts[dwContext]->handlesList_lock,
NULL);
(void)pthread_mutex_init(&sReadersContexts[dwContext]->powerState_lock,
NULL);
sReadersContexts[dwContext]->powerState = POWER_STATE_UNPOWERED;
/* reference count */
sReadersContexts[dwContext]->reference = 1;
/* If a clone to this reader exists take some values from that clone */
if (parentNode >= 0 && parentNode < PCSCLITE_MAX_READERS_CONTEXTS)
{
sReadersContexts[dwContext]->pFeeds =
sReadersContexts[parentNode]->pFeeds;
*(sReadersContexts[dwContext])->pFeeds += 1;
sReadersContexts[dwContext]->vHandle =
sReadersContexts[parentNode]->vHandle;
sReadersContexts[dwContext]->mMutex =
sReadersContexts[parentNode]->mMutex;
sReadersContexts[dwContext]->pMutex =
sReadersContexts[parentNode]->pMutex;
/* Call on the parent driver to see if it is thread safe */
dwGetSize = sizeof(ucThread);
rv = IFDGetCapabilities(sReadersContexts[parentNode],
TAG_IFD_THREAD_SAFE, &dwGetSize, ucThread);
if (rv == IFD_SUCCESS && dwGetSize == 1 && ucThread[0] == 1)
{
Log1(PCSC_LOG_INFO, "Driver is thread safe");
sReadersContexts[dwContext]->mMutex = NULL;
sReadersContexts[dwContext]->pMutex = NULL;
}
else
*(sReadersContexts[dwContext])->pMutex += 1;
}
if (sReadersContexts[dwContext]->pFeeds == NULL)
{
sReadersContexts[dwContext]->pFeeds = malloc(sizeof(int));
/* Initialize pFeeds to 1, otherwise multiple
cloned readers will cause pcscd to crash when
RFUnloadReader unloads the driver library
and there are still devices attached using it --mikeg*/
*(sReadersContexts[dwContext])->pFeeds = 1;
}
if (sReadersContexts[dwContext]->mMutex == 0)
{
sReadersContexts[dwContext]->mMutex =
malloc(sizeof(pthread_mutex_t));
(void)pthread_mutex_init(sReadersContexts[dwContext]->mMutex, NULL);
}
if (sReadersContexts[dwContext]->pMutex == NULL)
{
sReadersContexts[dwContext]->pMutex = malloc(sizeof(int));
*(sReadersContexts[dwContext])->pMutex = 1;
}
dwNumReadersContexts += 1;
rv = RFInitializeReader(sReadersContexts[dwContext]);
if (rv != SCARD_S_SUCCESS)
{
int log_level = PCSC_LOG_ERROR;
if (SCARD_E_UNKNOWN_READER == rv)
log_level = PCSC_LOG_INFO;
/* Cannot connect to reader. Exit gracefully */
Log2(log_level, "%s init failed.", readerName);
(void)RFRemoveReader(readerName, port, REMOVE_READER_NO_FLAG);
return rv;
}
/* asynchronous card movement? */
{
RESPONSECODE (*fct)(DWORD, int) = NULL;
dwGetSize = sizeof(fct);
rv = IFDGetCapabilities(sReadersContexts[dwContext],
TAG_IFD_POLLING_THREAD_WITH_TIMEOUT, &dwGetSize, (PUCHAR)&fct);
if ((rv != SCARD_S_SUCCESS) || (dwGetSize != sizeof(fct)))
{
Log1(PCSC_LOG_INFO, "Using the pcscd polling thread");
}
else
{
sReadersContexts[dwContext]->pthCardEvent = fct;
Log1(PCSC_LOG_INFO, "Using the reader polling thread");
}
rv = EHSpawnEventHandler(sReadersContexts[dwContext]);
if (rv != SCARD_S_SUCCESS)
{
Log2(PCSC_LOG_ERROR, "%s init failed.", readerName);
(void)RFRemoveReader(readerName, port, REMOVE_READER_NO_FLAG);
return rv;
}
}
/* Call on the driver to see if there are multiple slots */
dwGetSize = sizeof(ucGetData);
rv = IFDGetCapabilities((sReadersContexts[dwContext]),
TAG_IFD_SLOTS_NUMBER, &dwGetSize, ucGetData);
int nbSlots = ucGetData[0];
if (rv != IFD_SUCCESS || dwGetSize != 1 || nbSlots == 0)
/* Reader does not have this defined. Must be a single slot
* reader so we can just return SCARD_S_SUCCESS. */
return SCARD_S_SUCCESS;
if (1 == nbSlots)
/* Reader has only one slot */
return SCARD_S_SUCCESS;
/*
* Check the number of slots and create a different
* structure for each one accordingly
*/
/* Initialize the rest of the slots */
for (j = 1; j < nbSlots; j++)
{
char *tmpReader = NULL;
DWORD dwContextB = 0;
RESPONSECODE (*fct)(DWORD, int) = NULL;
/* We must find an empty spot to put the reader structure */
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
{
if (sReadersContexts[i]->vHandle == 0)
{
dwContextB = i;
break;
}
}
if (i == PCSCLITE_MAX_READERS_CONTEXTS)
{
/* No more slot left return */
RFRemoveReader(readerName, port, REMOVE_READER_NO_FLAG);
return SCARD_E_NO_MEMORY;
}
/* Copy the previous reader name and increment the slot number */
tmpReader = sReadersContexts[dwContextB]->readerState->readerName;
memcpy(tmpReader,
sReadersContexts[dwContext]->readerState->readerName,
sizeof(sReadersContexts[dwContextB]->readerState->readerName));
snprintf(tmpReader + strlen(tmpReader) - 2, 3, "%02X", j);
sReadersContexts[dwContextB]->library =
sReadersContexts[dwContext]->library;
sReadersContexts[dwContextB]->device =
sReadersContexts[dwContext]->device;
sReadersContexts[dwContextB]->version =
sReadersContexts[dwContext]->version;
sReadersContexts[dwContextB]->port =
sReadersContexts[dwContext]->port;
sReadersContexts[dwContextB]->vHandle =
sReadersContexts[dwContext]->vHandle;
sReadersContexts[dwContextB]->mMutex =
sReadersContexts[dwContext]->mMutex;
sReadersContexts[dwContextB]->pMutex =
sReadersContexts[dwContext]->pMutex;
sReadersContexts[dwContextB]->slot =
sReadersContexts[dwContext]->slot + j;
sReadersContexts[dwContextB]->pthCardEvent = NULL;
/*
* Added by Dave - slots did not have a pFeeds
* parameter so it was by luck they were working
*/
sReadersContexts[dwContextB]->pFeeds =
sReadersContexts[dwContext]->pFeeds;
/* Added by Dave for multiple slots */
*(sReadersContexts[dwContextB])->pFeeds += 1;
sReadersContexts[dwContextB]->contexts = 0;
sReadersContexts[dwContextB]->hLockId = 0;
sReadersContexts[dwContextB]->LockCount = 0;
lrv = list_init(&sReadersContexts[dwContextB]->handlesList);
if (lrv < 0)
{
Log2(PCSC_LOG_CRITICAL, "list_init failed with return value: %d", lrv);
return SCARD_E_NO_MEMORY;
}
lrv = list_attributes_seeker(&sReadersContexts[dwContextB]->handlesList,
RDR_CLIHANDLES_seeker);
if (lrv < 0)
{
Log2(PCSC_LOG_CRITICAL,
"list_attributes_seeker failed with return value: %d", lrv);
return SCARD_E_NO_MEMORY;
}
(void)pthread_mutex_init(&sReadersContexts[dwContextB]->handlesList_lock, NULL);
(void)pthread_mutex_init(&sReadersContexts[dwContextB]->powerState_lock,
NULL);
sReadersContexts[dwContextB]->powerState = POWER_STATE_UNPOWERED;
/* reference count */
sReadersContexts[dwContextB]->reference = 1;
/* Call on the parent driver to see if the slots are thread safe */
dwGetSize = sizeof(ucThread);
rv = IFDGetCapabilities((sReadersContexts[dwContext]),
TAG_IFD_SLOT_THREAD_SAFE, &dwGetSize, ucThread);
if (rv == IFD_SUCCESS && dwGetSize == 1 && ucThread[0] == 1)
{
Log1(PCSC_LOG_INFO, "Driver is slot thread safe");
sReadersContexts[dwContextB]->library =
strdup(sReadersContexts[dwContext]->library);
sReadersContexts[dwContextB]->device =
strdup(sReadersContexts[dwContext]->device);
sReadersContexts[dwContextB]->mMutex =
malloc(sizeof(pthread_mutex_t));
(void)pthread_mutex_init(sReadersContexts[dwContextB]->mMutex,
NULL);
sReadersContexts[dwContextB]->pMutex = malloc(sizeof(int));
*(sReadersContexts[dwContextB])->pMutex = 1;
}
else
*(sReadersContexts[dwContextB])->pMutex += 1;
dwNumReadersContexts += 1;
rv = RFInitializeReader(sReadersContexts[dwContextB]);
if (rv != SCARD_S_SUCCESS)
{
/* Cannot connect to slot. Exit gracefully */
(void)RFRemoveReader(readerName, port, REMOVE_READER_NO_FLAG);
return rv;
}
/* asynchronous card movement? */
dwGetSize = sizeof(fct);
rv = IFDGetCapabilities((sReadersContexts[dwContextB]),
TAG_IFD_POLLING_THREAD_WITH_TIMEOUT, &dwGetSize, (PUCHAR)&fct);
if ((rv != SCARD_S_SUCCESS) || (dwGetSize != sizeof(fct)))
{
Log1(PCSC_LOG_INFO, "Using the pcscd polling thread");
}
else
{
sReadersContexts[dwContextB]->pthCardEvent = fct;
Log1(PCSC_LOG_INFO, "Using the reader polling thread");
}
rv = EHSpawnEventHandler(sReadersContexts[dwContextB]);
if (rv != SCARD_S_SUCCESS)
{
Log2(PCSC_LOG_ERROR, "%s init failed.", readerName);
(void)RFRemoveReader(readerName, port, REMOVE_READER_NO_FLAG);
return rv;
}
}
return SCARD_S_SUCCESS;
}
LONG RFRemoveReader(const char *readerName, int port, int flags)
{
char lpcStripReader[MAX_READERNAME];
int i;
#ifdef FILTER_NAMES
const char *extend;
#endif
int extend_size = 0;
if (readerName == NULL)
return SCARD_E_INVALID_VALUE;
#ifdef FILTER_NAMES
extend = SYS_GetEnv("PCSCLITE_FILTER_EXTEND_READER_NAMES");
if (extend)
extend_size = strlen(extend);
#endif
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
{
if (sReadersContexts[i] && (sReadersContexts[i]->vHandle != 0))
{
strncpy(lpcStripReader,
sReadersContexts[i]->readerState->readerName,
sizeof(lpcStripReader));
lpcStripReader[strlen(lpcStripReader) - 6 - extend_size] = 0;
/* Compare only the significant part of the reader name */
if ((strncmp(readerName, lpcStripReader, MAX_READERNAME - sizeof(" 00 00")) == 0)
&& (port == sReadersContexts[i]->port))
{
if (flags & REMOVE_READER_FLAG_REMOVED)
{
UCHAR tagValue[1];
DWORD valueLength;
LONG ret;
/* signal to the driver that the reader has been removed */
valueLength = sizeof(tagValue);
ret = IFDGetCapabilities(sReadersContexts[i],
TAG_IFD_DEVICE_REMOVED, &valueLength, tagValue);
if ((IFD_SUCCESS) == ret && (1 == tagValue[0]))
{
tagValue[0] = 1;
IFDSetCapabilities(sReadersContexts[i],
TAG_IFD_DEVICE_REMOVED, sizeof tagValue, tagValue);
}
}
/* remove the reader */
UNREF_READER(sReadersContexts[i])
}
}
}
return SCARD_S_SUCCESS;
}
LONG removeReader(READER_CONTEXT * sContext)
{
/* Try to destroy the thread */
if (sContext -> pthThread)
EHDestroyEventHandler(sContext);
if ((NULL == sContext->pMutex) || (NULL == sContext->pFeeds))
{
Log1(PCSC_LOG_ERROR,
"Trying to remove an already removed driver");
return SCARD_E_INVALID_VALUE;
}
RFUnInitializeReader(sContext);
*sContext->pMutex -= 1;
/* free shared resources when the last slot is closed */
if (0 == *sContext->pMutex)
{
(void)pthread_mutex_destroy(sContext->mMutex);
free(sContext->mMutex);
sContext->mMutex = NULL;
free(sContext->library);
free(sContext->device);
free(sContext->pMutex);
sContext->pMutex = NULL;
}
*sContext->pFeeds -= 1;
/* Added by Dave to free the pFeeds variable */
if (*sContext->pFeeds == 0)
{
free(sContext->pFeeds);
sContext->pFeeds = NULL;
}
(void)pthread_mutex_destroy(&sContext->powerState_lock);
sContext->version = 0;
sContext->port = 0;
sContext->contexts = 0;
sContext->slot = 0;
sContext->hLockId = 0;
sContext->LockCount = 0;
sContext->vHandle = NULL;
(void)pthread_mutex_lock(&sContext->handlesList_lock);
while (list_size(&sContext->handlesList) != 0)
{
int lrv;
RDR_CLIHANDLES *currentHandle;
currentHandle = list_get_at(&sContext->handlesList, 0);
lrv = list_delete_at(&sContext->handlesList, 0);
if (lrv < 0)
Log2(PCSC_LOG_CRITICAL,
"list_delete_at failed with return value: %d", lrv);
free(currentHandle);
}
(void)pthread_mutex_unlock(&sContext->handlesList_lock);
(void)pthread_mutex_destroy(&sContext->handlesList_lock);
list_destroy(&sContext->handlesList);
dwNumReadersContexts -= 1;
/* signal an event to clients */
EHSignalEventToClients();
return SCARD_S_SUCCESS;
}
LONG RFSetReaderName(READER_CONTEXT * rContext, const char *readerName,
const char *libraryName, int port)
{
LONG parent = -1; /* reader number of the parent of the clone */
DWORD valueLength;
int currentDigit = -1;
int supportedChannels = 0;
bool usedDigits[PCSCLITE_MAX_READERS_CONTEXTS];
int i;
const char *extend = "";
/* Clear the list */
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
usedDigits[i] = false;
if (dwNumReadersContexts != 0)
{
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
{
if (sReadersContexts[i]->vHandle != 0)
{
if (strcmp(sReadersContexts[i]->library, libraryName) == 0)
{
UCHAR tagValue[1];
LONG ret;
/* Ask the driver if it supports multiple channels */
valueLength = sizeof(tagValue);
ret = IFDGetCapabilities(sReadersContexts[i],
TAG_IFD_SIMULTANEOUS_ACCESS,
&valueLength, tagValue);
if ((ret == IFD_SUCCESS) && (valueLength == 1) &&
(tagValue[0] > 1))
{
supportedChannels = tagValue[0];
Log2(PCSC_LOG_INFO,
"Support %d simultaneous readers", tagValue[0]);
}
else
supportedChannels = 1;
/* Check to see if it is a hotplug reader and different */
if ((((sReadersContexts[i]->port & 0xFFFF0000) ==
PCSCLITE_HP_BASE_PORT)
&& (sReadersContexts[i]->port != port))
|| (supportedChannels > 1))
{
const char *reader = sReadersContexts[i]->readerState->readerName;
/*
* tells the caller who the parent of this
* clone is so it can use its shared
* resources like mutex/etc.
*/
parent = i;
/*
* If the same reader already exists and it is
* hotplug then we must look for others and
* enumerate the readername
*/
currentDigit = strtol(reader + strlen(reader) - 5, NULL, 16);
/* This spot is taken */
usedDigits[currentDigit] = true;
}
}
}
}
}
/* default value */
i = 0;
/* Other identical readers exist on the same bus */
if (currentDigit != -1)
{
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
{
/* get the first free digit */
if (usedDigits[i] == false)
break;
}
if (i == PCSCLITE_MAX_READERS_CONTEXTS)
{
Log2(PCSC_LOG_ERROR, "Max number of readers reached: %d", PCSCLITE_MAX_READERS_CONTEXTS);
return -2;
}
if (i >= supportedChannels)
{
Log3(PCSC_LOG_ERROR, "Driver %s does not support more than "
"%d reader(s). Maybe the driver should support "
"TAG_IFD_SIMULTANEOUS_ACCESS", libraryName, supportedChannels);
return -2;
}
}
#ifdef FILTER_NAMES
extend = SYS_GetEnv("PCSCLITE_FILTER_EXTEND_READER_NAMES");
if (NULL == extend)
extend = "";
#endif
snprintf(rContext->readerState->readerName,
sizeof(rContext->readerState->readerName), "%s%s %02X 00",
readerName, extend, i);
/* Set the slot in 0xDDDDCCCC */
rContext->slot = i << 16;
return parent;
}
LONG RFReaderInfo(const char *readerName, READER_CONTEXT ** sReader)
{
int i;
if (readerName == NULL)
return SCARD_E_UNKNOWN_READER;
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
{
if (sReadersContexts[i]->vHandle != 0)
{
if (strcmp(readerName,
sReadersContexts[i]->readerState->readerName) == 0)
{
/* Increase reference count */
REF_READER(sReadersContexts[i])
*sReader = sReadersContexts[i];
return SCARD_S_SUCCESS;
}
}
}
return SCARD_E_UNKNOWN_READER;
}
LONG RFReaderInfoById(SCARDHANDLE hCard, READER_CONTEXT * * sReader)
{
int i;
for (i = 0; i < PCSCLITE_MAX_READERS_CONTEXTS; i++)
{
if (sReadersContexts[i]->vHandle != 0)
{
RDR_CLIHANDLES * currentHandle;
(void)pthread_mutex_lock(&sReadersContexts[i]->handlesList_lock);
currentHandle = list_seek(&sReadersContexts[i]->handlesList,
&hCard);
(void)pthread_mutex_unlock(&sReadersContexts[i]->handlesList_lock);
if (currentHandle != NULL)
{
/* Increase reference count */
REF_READER(sReadersContexts[i])
*sReader = sReadersContexts[i];
return SCARD_S_SUCCESS;
}
}
}
return SCARD_E_INVALID_VALUE;
}
LONG RFLoadReader(READER_CONTEXT * rContext)
{
LONG ret = SCARD_S_SUCCESS;
if (rContext->vHandle != 0)
{
Log2(PCSC_LOG_INFO, "Reusing already loaded driver for %s",
rContext->library);
/* Another reader exists with this library loaded */
return SCARD_S_SUCCESS;
}
rContext->vHandle = DYN_LoadLibrary(rContext->library);
if (NULL == rContext->vHandle)
ret = SCARD_F_UNKNOWN_ERROR;
return ret;
}
LONG RFBindFunctions(READER_CONTEXT * rContext)
{
int rv;
void *f;
rv = DYN_GetAddress(rContext->vHandle, &f, "IFDHCreateChannelByName", true);
if (SCARD_S_SUCCESS == rv)
{
/* Ifd Handler 3.0 found */
rContext->version = IFD_HVERSION_3_0;
}
else
{
rv = DYN_GetAddress(rContext->vHandle, &f, "IFDHCreateChannel", false);
if (SCARD_S_SUCCESS == rv)
{
/* Ifd Handler 2.0 found */
rContext->version = IFD_HVERSION_2_0;
}
else
{
/* Neither version of the IFD Handler was found - exit */
Log1(PCSC_LOG_CRITICAL, "IFDHandler functions missing");
return SCARD_F_UNKNOWN_ERROR;
}
}
if (rContext->version == IFD_HVERSION_2_0)
{
/* The following binds version 2.0 of the IFD Handler specs */
#define GET_ADDRESS_OPTIONALv2(s, code) \
{ \
void *f1 = NULL; \
int rvl = DYN_GetAddress(rContext->vHandle, &f1, "IFDH" #s, false); \
if (SCARD_S_SUCCESS != rvl) \
{ \
code \
} \
rContext->psFunctions.psFunctions_v2.pvf ## s = f1; \
}
#define GET_ADDRESSv2(s) \
GET_ADDRESS_OPTIONALv2(s, \
Log1(PCSC_LOG_CRITICAL, "IFDHandler functions missing: " #s ); \
return(rv); )
Log1(PCSC_LOG_INFO, "Loading IFD Handler 2.0");
GET_ADDRESSv2(CreateChannel)
GET_ADDRESSv2(CloseChannel)
GET_ADDRESSv2(GetCapabilities)
GET_ADDRESSv2(SetCapabilities)
GET_ADDRESSv2(PowerICC)
GET_ADDRESSv2(TransmitToICC)
GET_ADDRESSv2(ICCPresence)
GET_ADDRESS_OPTIONALv2(SetProtocolParameters, )
GET_ADDRESSv2(Control)
}
else if (rContext->version == IFD_HVERSION_3_0)
{
/* The following binds version 3.0 of the IFD Handler specs */
#define GET_ADDRESS_OPTIONALv3(s, code) \
{ \
void *f1 = NULL; \
int rvl = DYN_GetAddress(rContext->vHandle, &f1, "IFDH" #s, false); \
if (SCARD_S_SUCCESS != rvl) \
{ \
code \
} \
rContext->psFunctions.psFunctions_v3.pvf ## s = f1; \
}
#define GET_ADDRESSv3(s) \
GET_ADDRESS_OPTIONALv3(s, \
Log1(PCSC_LOG_CRITICAL, "IFDHandler functions missing: " #s ); \
return(rv); )
Log1(PCSC_LOG_INFO, "Loading IFD Handler 3.0");
GET_ADDRESSv2(CreateChannel)
GET_ADDRESSv2(CloseChannel)
GET_ADDRESSv2(GetCapabilities)
GET_ADDRESSv2(SetCapabilities)
GET_ADDRESSv2(PowerICC)
GET_ADDRESSv2(TransmitToICC)
GET_ADDRESSv2(ICCPresence)
GET_ADDRESS_OPTIONALv2(SetProtocolParameters, )
GET_ADDRESSv3(CreateChannelByName)
GET_ADDRESSv3(Control)
}
else
{
/* Who knows what could have happened for it to get here. */
Log1(PCSC_LOG_CRITICAL, "IFD Handler not 1.0/2.0 or 3.0");
return SCARD_F_UNKNOWN_ERROR;
}
return SCARD_S_SUCCESS;
}
LONG RFUnBindFunctions(READER_CONTEXT * rContext)
{
/* Zero out everything */
memset(&rContext->psFunctions, 0, sizeof(rContext->psFunctions));
return SCARD_S_SUCCESS;
}
LONG RFUnloadReader(READER_CONTEXT * rContext)
{
/* Make sure no one else is using this library */
if (*rContext->pFeeds == 1)
{