#include "config.h"
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/un.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <stdio.h>
#include <time.h>
#include <string.h>
#include "misc.h"
#include "pcscd.h"
#include "winscard.h"
#include "debug.h"
#include "winscard_msg.h"
#include "sys_generic.h"
#include "utils.h"
Go to the source code of this file.
Functions | |
| INTERNAL int | SHMClientRead (psharedSegmentMsg msgStruct, DWORD dwClientID, int blockamount) |
| Wrapper for the SHMMessageReceive() function. | |
| INTERNAL int | SHMClientSetupSession (PDWORD pdwClientID) |
| Prepares a communication channel for the client to talk to the server. | |
| INTERNAL int | SHMClientCloseSession (DWORD dwClientID) |
| Closes the socket used by the client to communicate with the server. | |
| INTERNAL int | SHMMessageSend (void *buffer_void, size_t buffer_size, int filedes, int blockAmount) |
| Sends a menssage from client to server or vice-versa. | |
| INTERNAL int | SHMMessageReceive (void *buffer_void, size_t buffer_size, int filedes, int blockAmount) |
| Called by the Client to get the reponse from the server or vice-versa. | |
| INTERNAL int | WrapSHMWrite (unsigned int command, DWORD dwClientID, unsigned int size, unsigned int blockAmount, void *data_void) |
| Wrapper for the SHMMessageSend() function. | |
| INTERNAL void | SHMCleanupSharedSegment (int sockValue, const char *pcFilePath) |
| Closes the communications channel used by the server to talk to the clients. | |
A file based socket (commonSocket) is used to send/receive only messages among clients and server.
The messages' data are passed throw a memory mapped file: sharedSegmentMsg.
Definition in file winscard_msg.c.
| INTERNAL void SHMCleanupSharedSegment | ( | int | sockValue, | |
| const char * | pcFilePath | |||
| ) |
Closes the communications channel used by the server to talk to the clients.
The socket used is closed and the file it is bound to is removed.
| [in] | sockValue | Socket to be closed. |
| [in] | pcFilePath | File used by the socket. |
Definition at line 479 of file winscard_msg.c.
References SYS_CloseFile(), and SYS_Unlink().
Referenced by SHMInitializeCommonSegment().
| INTERNAL int SHMClientCloseSession | ( | DWORD | dwClientID | ) |
Closes the socket used by the client to communicate with the server.
| [in] | dwClientID | Client socket handle to be closed. |
| 0 | Success. |
Definition at line 122 of file winscard_msg.c.
References SYS_CloseFile().
Referenced by SCardCleanContext(), and SCardUnload().
| INTERNAL int SHMClientRead | ( | psharedSegmentMsg | msgStruct, | |
| DWORD | dwClientID, | |||
| int | blockamount | |||
| ) |
Wrapper for the SHMMessageReceive() function.
Called by clients to read the server responses.
| [out] | msgStruct | Message read. |
| [in] | dwClientID | Client socket handle. |
| [in] | blockamount | Timeout in milliseconds. |
Definition at line 57 of file winscard_msg.c.
References SHMMessageReceive().
Referenced by SCardBeginTransaction(), SCardCancelTransaction(), SCardConnect(), SCardControl(), SCardDisconnect(), SCardEndTransaction(), SCardEstablishContextTH(), SCardGetSetAttrib(), SCardReconnect(), SCardReleaseContext(), SCardStatus(), and SCardTransmit().
| INTERNAL int SHMClientSetupSession | ( | PDWORD | pdwClientID | ) |
Prepares a communication channel for the client to talk to the server.
This is called by the application to create a socket for local IPC with the server. The socket is associated to the file PCSCLITE_CSOCK_NAME.
| [out] | pdwClientID | Client Connection ID. |
| 0 | Success. | |
| -1 | Can not create the socket. | |
| -1 | The socket can not open a connection. | |
| -1 | Can not set the socket to non-blocking. |
Definition at line 75 of file winscard_msg.c.
References Log2, PCSCLITE_CSOCK_NAME, and SYS_CloseFile().
Referenced by SCardEstablishContextTH().
| INTERNAL int SHMMessageReceive | ( | void * | buffer_void, | |
| size_t | buffer_size, | |||
| int | filedes, | |||
| int | blockAmount | |||
| ) |
Called by the Client to get the reponse from the server or vice-versa.
Reads the message from the file filedes.
| [out] | buffer_void | Message read. |
| [in] | buffer_size | Size to read |
| [in] | filedes | Socket handle. |
| [in] | blockAmount | Timeout in milliseconds. |
| 0 | Success. | |
| -1 | Timeout. | |
| -1 | Socket is closed. | |
| -1 | A signal was received. |
Definition at line 268 of file winscard_msg.c.
References Log1, Log2, SCARD_S_SUCCESS, and SCardCheckDaemonAvailability().
Referenced by MSGFunctionDemarshall(), SCardControl(), SCardEstablishContextTH(), SCardTransmit(), SHMClientRead(), and SHMProcessEventsContext().
| INTERNAL int SHMMessageSend | ( | void * | buffer_void, | |
| size_t | buffer_size, | |||
| int | filedes, | |||
| int | blockAmount | |||
| ) |
Sends a menssage from client to server or vice-versa.
Writes the message in the shared file filedes.
| [in] | buffer_void | Message to be sent. |
| [in] | buffer_size | Size of the message to send |
| [in] | filedes | Socket handle. |
| [in] | blockAmount | Timeout in milliseconds. |
| 0 | Success | |
| -1 | Timeout. | |
| -1 | Socket is closed. | |
| -1 | A signal was received. |
Definition at line 143 of file winscard_msg.c.
References Log2.
Referenced by ContextThread(), MSGFunctionDemarshall(), SCardEstablishContextTH(), and WrapSHMWrite().
| INTERNAL int WrapSHMWrite | ( | unsigned int | command, | |
| DWORD | dwClientID, | |||
| unsigned int | size, | |||
| unsigned int | blockAmount, | |||
| void * | data_void | |||
| ) |
Wrapper for the SHMMessageSend() function.
Called by clients to send messages to the server. The parameters command and data are set in the sharedSegmentMsg struct in order to be sent.
| [in] | command | Command to be sent. |
| [in] | dwClientID | Client socket handle. |
| [in] | size | Size of the message (data). |
| [in] | blockAmount | Timeout to the operation in ms. |
| [in] | data_void | Data to be sent. |
Definition at line 412 of file winscard_msg.c.
References SHMMessageSend(), SYS_GetGID(), and SYS_GetUID().
Referenced by SCardBeginTransaction(), SCardCancelTransaction(), SCardConnect(), SCardControl(), SCardDisconnect(), SCardEndTransaction(), SCardEstablishContextTH(), SCardGetSetAttrib(), SCardReconnect(), SCardReleaseContext(), SCardStatus(), and SCardTransmit().
1.4.7