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vpcd win32: fixed race condition

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This commit is contained in:
Frank Morgner
2014-03-26 17:47:50 +01:00
parent a1131dd83a
commit 8f77abdc00
3 changed files with 48 additions and 93 deletions
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45
virtualsmartcard/win32/BixVReader/VpcdReader.cpp
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@@ -13,8 +13,13 @@ int VpcdReader::portBase;
VpcdReader::VpcdReader() {
rpcType=2;
state=SCARD_ABSENT;
state = SCARD_ABSENT;
cardPresent = false;
InitializeCriticalSection(&ioSection);
}
VpcdReader::~VpcdReader() {
DeleteCriticalSection(&ioSection);
}
void VpcdReader::init(wchar_t *section) {
portBase=GetPrivateProfileInt(L"Driver",L"RPC_PORT_BASE",VPCDPORT,L"BixVReader.ini");
@@ -24,12 +29,19 @@ void VpcdReader::init(wchar_t *section) {
bool VpcdReader::CheckATR() {
bool r = false;
struct vicc_ctx *vicc_ctx = (struct vicc_ctx *) ctx;
{
SectionLocker lock(ioSection);
if (vicc_present((struct vicc_ctx *) ctx) == 1) {
signalInsertion();
r = true;
} else {
}
}
if (r) {
signalInsertion();
}
else {
signalRemoval();
}
@@ -41,7 +53,10 @@ bool VpcdReader::QueryTransmit(BYTE *APDU,int APDUlen,BYTE *Resp,int *Resplen) {
bool r = false;
if (APDU && APDUlen && Resp && Resplen) {
rapdu_len = vicc_transmit((struct vicc_ctx *) ctx, APDUlen, APDU, &rapdu);
{
SectionLocker lock(ioSection);
rapdu_len = vicc_transmit((struct vicc_ctx *) ctx, APDUlen, APDU, &rapdu);
}
if (rapdu_len > 0) {
memcpy(Resp, rapdu, rapdu_len);
*Resplen = rapdu_len;
@@ -61,7 +76,10 @@ bool VpcdReader::QueryATR(BYTE *ATR,DWORD *ATRsize,bool reset) {
bool r = false;
if (ATR && ATRsize) {
atr_len = vicc_getatr((struct vicc_ctx *) ctx, &atr);
{
SectionLocker lock(ioSection);
atr_len = vicc_getatr((struct vicc_ctx *) ctx, &atr);
}
if (atr_len > 0) {
/* TODO do length checking on length of ATR when ATRsize is
* correctly initialized by Reader.cpp */
@@ -70,7 +88,10 @@ bool VpcdReader::QueryATR(BYTE *ATR,DWORD *ATRsize,bool reset) {
free(atr);
r = true;
if (reset)
{
SectionLocker lock(ioSection);
vicc_reset((struct vicc_ctx *) ctx);
}
} else {
signalRemoval();
}
@@ -81,7 +102,10 @@ bool VpcdReader::QueryATR(BYTE *ATR,DWORD *ATRsize,bool reset) {
DWORD VpcdReader::startServer() {
breakSocket = false;
ctx = vicc_init(NULL, port);
{
SectionLocker lock(ioSection);
ctx = vicc_init(NULL, port);
}
while (!breakSocket) {
CheckATR();
Sleep(1000);
@@ -92,8 +116,11 @@ DWORD VpcdReader::startServer() {
void VpcdReader::shutdown() {
breakSocket=true;
WaitForSingleObject(serverThread,10000);
serverThread=NULL;
vicc_exit((struct vicc_ctx *) ctx);
serverThread = NULL;
{
SectionLocker lock(ioSection);
vicc_exit((struct vicc_ctx *) ctx);
}
state=SCARD_ABSENT;
ctx = NULL;
if (waitRemoveIpr!=NULL) {