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libpcscxx
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all: pass context to check; win: even more error messages

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master
Marc Wäckerlin 16 years ago
parent fe32a2391b
commit f6a72ef0fa
1 changed files with 174 additions and 29 deletions
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  1. 203
      src/pcsc.hxx

203
src/pcsc.hxx
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@ -190,7 +190,8 @@ namespace pcsc {
//! Disconnects connection.
~Reader() {
_state = SCardDisconnect(_id, SCARD_LEAVE_CARD);
if (!std::uncaught_exception()) _connection.check();
if (!std::uncaught_exception())
_connection.check("disconnect smartcard");
}
//! Get reader status.
@ -199,7 +200,8 @@ namespace pcsc {
DWORD s;
DWORD len(MAX_ATR_SIZE);
unsigned char a[len];
check(SCardStatus(_id, 0, &dummy, &s, &_protocol, a, &len));
check(SCardStatus(_id, 0, &dummy, &s, &_protocol, a, &len),
"query smartcard status");
return Status(s, std::string((char*)a, len));
}
@ -210,7 +212,8 @@ namespace pcsc {
SCARD_IO_REQUEST rPci;
check(SCardTransmit(_id, pci(),
(unsigned char*)in.c_str(), in.size(),
&rPci, buff, &len));
&rPci, buff, &len),
"smartcard transmit message "+hex(in));
return std::string((char*)buff, len);
}
@ -229,17 +232,18 @@ namespace pcsc {
//! Use scoped transactions with @ref Transaction
void beginTransaction() {
check(SCardBeginTransaction(_id));
check(SCardBeginTransaction(_id), "smartcard begin transaction");
}
//! Use scoped transactions with @ref Transaction
void commitTransaction() {
check(SCardEndTransaction(_id, SCARD_LEAVE_CARD));
check(SCardEndTransaction(_id, SCARD_LEAVE_CARD),
"smartcard end transaction");
}
//! Use scoped transactions with @ref Transaction
void cancelTransaction() {
check(SCardCancelTransaction(_id));
check(SCardCancelTransaction(_id), "smartcard cancel transaction");
}
/*! @throw not_implemented if _protocol is unknown. */
@ -255,9 +259,9 @@ namespace pcsc {
//! Sets state and throws an exception if neccessary.
/*! @throw access_error if it is instanciated for exceptions and
an error occured in the last command. */
bool check(long state) {
bool check(long state, const std::string context="") {
_state = state;
return _connection.check(state);
return _connection.check(state, context);
}
//! Only Connection is allowed to instanciate.
@ -269,7 +273,8 @@ namespace pcsc {
check(SCardConnect(_connection._id, strconv(name).c_str(),
SCARD_SHARE_SHARED,
SCARD_PROTOCOL_T0|SCARD_PROTOCOL_T1,
&_id, &_protocol));
&_id, &_protocol),
"connect smartcard \""+name+"\"");
}
//! forbidden
@ -283,7 +288,7 @@ namespace pcsc {
Connection& _connection;
SCARDHANDLE _id;
long _state;
DWORD _state;
DWORD _protocol;
};
@ -331,13 +336,13 @@ namespace pcsc {
Connection(Scope s=SYSTEM, bool exceptions=true):
_exc(exceptions), _id(0),
_state(SCardEstablishContext(s, 0, 0, &_id)) {
check();
check("establish smartcard context");
}
//! Closes the connection (releases the smartcard context)
~Connection() {
_state = SCardReleaseContext(_id);
if (!std::uncaught_exception()) check();
if (!std::uncaught_exception()) check("smartcard release context");
}
//! Scans for available readers from a specified list of groups.
@ -347,11 +352,13 @@ namespace pcsc {
std::string grp(join(groups));
DWORD num(0);
if (!check(SCardListReaders(_id, grp.size()?strconv(grp).data():0, 0,
&num)))
&num),
"(1) smartcard list readers of groups "+grp))
return res;
std::auto_ptr<char_t> nm(new char_t[num]);
if (!check(SCardListReaders(_id, grp.size()?strconv(grp).data():0,
nm.get(), &num)))
nm.get(), &num),
"(2) smartcard list readers of groups "+grp))
return res;
return res = split(strconv(string(nm.get(), num-1)));
}
@ -382,34 +389,168 @@ namespace pcsc {
#ifdef WIN32
std::stringstream ss;
switch (_state) {
case SCARD_S_SUCCESS:
ss<<"Success";
case SCARD_E_SHARING_VIOLATION:
ss<<"The smart card cannot be accessed because of other"
<<" connections outstanding.";
break;
case SCARD_E_NO_SMARTCARD:
ss<<"The operation requires a Smart Card, but no Smart Card"
<<" is currently in the device.";
break;
case SCARD_E_UNKNOWN_CARD:
ss<<"The specified smart card name is not recognized.";
break;
case SCARD_E_CANT_DISPOSE:
ss<<"The system could not dispose of the media in the"
<<" requested manner.";
break;
case SCARD_E_PROTO_MISMATCH:
ss<<"The requested protocols are incompatible with the"
<<" protocol currently in use with the smart card.";
break;
case SCARD_E_NOT_READY:
ss<<"The reader or smart card is not ready to accept commands.";
break;
case SCARD_E_INVALID_VALUE:
ss<<"One or more of the supplied parameters values could"
<<" not be properly interpreted.";
break;
case SCARD_E_SYSTEM_CANCELLED:
ss<<"The action was cancelled by the system, presumably"
<<" to log off or shut down.";
break;
case SCARD_F_COMM_ERROR:
ss<<"An internal communications error has been detected.";
break;
case SCARD_F_UNKNOWN_ERROR:
ss<<"An internal error has been detected, but the source"
<<" is unknown.";
break;
case SCARD_E_INVALID_ATR:
ss<<"An ATR obtained from the registry is not a valid ATR string.";
break;
case SCARD_E_NOT_TRANSACTED:
ss<<"An attempt was made to end a non-existent transaction.";
break;
case SCARD_E_READER_UNAVAILABLE:
ss<<"The specified reader is not currently available for use.";
break;
case SCARD_P_SHUTDOWN:
ss<<"The operation has been aborted to allow the server"
<<" application to exit.";
break;
case SCARD_E_PCI_TOO_SMALL:
ss<<"The PCI Receive buffer was too small.";
break;
case SCARD_E_READER_UNSUPPORTED:
ss<<"The reader driver does not meet minimal requirements"
<<" for support.";
break;
case SCARD_E_DUPLICATE_READER:
ss<<"The reader driver did not produce a unique reader name.";
break;
case SCARD_E_CARD_UNSUPPORTED:
ss<<"The smart card does not meet minimal requirements"
<<" for support.";
break;
case SCARD_E_NO_SERVICE:
ss<<"The Smart card resource manager is not running.";
break;
case SCARD_E_SERVICE_STOPPED:
ss<<"The Smart card resource manager has shut down.";
break;
case SCARD_E_UNEXPECTED:
ss<<"An unexpected card error has occurred.";
break;
case SCARD_E_ICC_INSTALLATION:
ss<<"No Primary Provider can be found for the smart card.";
break;
case SCARD_E_ICC_CREATEORDER:
ss<<"The requested order of object creation is not supported.";
break;
case SCARD_E_UNSUPPORTED_FEATURE:
ss<<"This smart card does not support the requested feature.";
break;
case SCARD_E_DIR_NOT_FOUND:
ss<<"The identified directory does not exist in the smart card.";
break;
case SCARD_E_FILE_NOT_FOUND:
ss<<"The identified file does not exist in the smart card.";
break;
case SCARD_E_NO_DIR:
ss<<"The supplied path does not represent a smart card directory.";
break;
case SCARD_E_NO_FILE:
ss<<"The supplied path does not represent a smart card file.";
break;
case SCARD_E_NO_ACCESS:
ss<<"Access is denied to this file.";
break;
case SCARD_E_WRITE_TOO_MANY:
ss<<"The smartcard does not have enough memory to store"
<<" the information.";
break;
case SCARD_E_BAD_SEEK:
ss<<"There was an error trying to set the smart card file"
<<" object pointer.";
break;
case SCARD_E_INVALID_CHV:
ss<<"The supplied PIN is incorrect.";
break;
case SCARD_E_UNKNOWN_RES_MNG:
ss<<"An unrecognized error code was returned from a layered"
<<" component.";
break;
case SCARD_E_NO_SUCH_CERTIFICATE:
ss<<"The requested certificate does not exist.";
break;
case SCARD_E_CERTIFICATE_UNAVAILABLE:
ss<<"The requested certificate could not be obtained.";
break;
case SCARD_E_NO_READERS_AVAILABLE:
ss<<"Cannot find a smart card reader.";
break;
case SCARD_E_COMM_DATA_LOST:
ss<<"A communications error with the smart card has been"
<<" detected. Retry the operation.";
break;
case SCARD_E_NO_KEY_CONTAINER:
ss<<"The requested key container does not exist on the"
<<" smart card.";
break;
case SCARD_E_SERVER_TOO_BUSY:
ss<<"The Smart card resource manager is too busy to complete"
<<" this operation.";
break;
case SCARD_W_UNSUPPORTED_CARD:
ss<<"The reader cannot communicate with the smart card, due"
<<" to ATR configuration conflicts.";
break;
case SCARD_W_UNRESPONSIVE_CARD:
ss<<"The smart card is not responding to a reset.";
break;
case SCARD_W_UNPOWERED_CARD:
ss<<"Power has been removed from the smart card, so that further"
" communication is not possible.";
ss<<"Power has been removed from the smart card, so that"
<<" further communication is not possible.";
break;
case SCARD_W_RESET_CARD:
ss<<"The smart card has been reset, so any shared state"
" information is invalid.";
<<" information is invalid.";
break;
case SCARD_W_REMOVED_CARD:
ss<<"The smart card has been removed, so that further"
" communication is not possible.";
<<" communication is not possible.";
break;
case SCARD_W_SECURITY_VIOLATION:
ss<<"Access was denied because of a security violation.";
break;
case SCARD_W_WRONG_CHV:
ss<<"The card cannot be accessed because the wrong PIN was"
" presented.";
ss<<"The card cannot be accessed because the wrong PIN"
<<" was presented.";
break;
case SCARD_W_CHV_BLOCKED:
ss<<"The card cannot be accessed because the maximum number"
" of PIN entry attempts has been reached.";
ss<<"The card cannot be accessed because the maximum"
<<" number of PIN entry attempts has been reached.";
break;
case SCARD_W_EOF:
ss<<"The end of the smart card file has been reached.";
@ -421,7 +562,7 @@ namespace pcsc {
ss<<"No PIN was presented to the smart card.";
break;
default:
ss<<"Unknown PCSC state: "<<_state;
ss<<"Unknown PCSC state: "<<std::hex<<_state;
}
return ss.str();
#else
@ -435,16 +576,20 @@ namespace pcsc {
//! Sets state and throws an exception if neccessary.
/*! @throw access_error if it is instanciated for exceptions and
an error occured in the last command. */
bool check(long state) {
bool check(long state, const std::string& context="") {
_state = state;
return check();
return check(context);
}
//! Throws an exception if neccessary.
/*! @throw access_error if it is instanciated for exceptions and
an error occured in the last command. */
bool check() {
if (_exc&&_state!=SCARD_S_SUCCESS) throw access_error(error());
bool check(const std::string& context="") {
if (_exc&&_state!=SCARD_S_SUCCESS)
if (context.size())
throw access_error(context+": "+error());
else
throw access_error(error());
return _state==SCARD_S_SUCCESS;
}

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