bool CBasicClient::open_connection()
{
close_connection();
struct sockaddr_un servaddr;
int clilen;
memset(&servaddr, 0, sizeof(struct sockaddr_un));
servaddr.sun_family = AF_UNIX;
strcpy(servaddr.sun_path, getSocketName()); // no length check !!!
clilen = sizeof(servaddr.sun_family) + strlen(servaddr.sun_path);
if ((sock_fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
{
printf("[CBasicClient] socket failed.\n");
perror(getSocketName());
sock_fd = -1;
return false;
}
if (connect(sock_fd, (struct sockaddr*) &servaddr, clilen) < 0)
{
printf("[CBasicClient] connect failed.\n");
perror(getSocketName());
close_connection();
return false;
}
return true;
}
bool CBasicClient::receive_data(char* data, const size_t size, bool use_max_timeout)
{
timeval timeout;
if (sock_fd == -1)
return false;
if (use_max_timeout)
{
timeout.tv_sec = MAX_TIMEOUT_SEC;
timeout.tv_usec = MAX_TIMEOUT_USEC;
}
else
{
timeout.tv_sec = TIMEOUT_SEC;
timeout.tv_usec = TIMEOUT_USEC;
}
if (::receive_data(sock_fd, data, size, timeout) == false)
{
printf("[CBasicClient] receive failed: %s\n", getSocketName());
close_connection();
return false;
}
return true;
}
/**
* @brief 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 \c PCSCLITE_CSOCK_NAME.
*
* @param[out] pdwClientID Client Connection ID.
*
* @retval 0 Success.
* @retval -1 Can not create the socket.
* @retval -1 The socket can not open a connection.
* @retval -1 Can not set the socket to non-blocking.
*/
INTERNAL int ClientSetupSession(uint32_t *pdwClientID)
{
struct sockaddr_un svc_addr;
int ret;
char *socketName;
ret = socket(PF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
if (ret < 0)
{
Log2(PCSC_LOG_CRITICAL, "Error: create on client socket: %s",
strerror(errno));
return -1;
}
*pdwClientID = ret;
socketName = getSocketName();
svc_addr.sun_family = AF_UNIX;
strncpy(svc_addr.sun_path, socketName, sizeof(svc_addr.sun_path));
if (connect(*pdwClientID, (struct sockaddr *) &svc_addr,
sizeof(svc_addr.sun_family) + strlen(svc_addr.sun_path) + 1) < 0)
{
Log3(PCSC_LOG_CRITICAL, "Error: connect to client socket %s: %s",
socketName, strerror(errno));
(void)close(*pdwClientID);
return -1;
}
ret = fcntl(*pdwClientID, F_GETFL, 0);
if (ret < 0)
{
Log3(PCSC_LOG_CRITICAL, "Error: cannot retrieve socket %s flags: %s",
socketName, strerror(errno));
(void)close(*pdwClientID);
return -1;
}
if (fcntl(*pdwClientID, F_SETFL, ret | O_NONBLOCK) < 0)
{
Log3(PCSC_LOG_CRITICAL, "Error: cannot set socket %s nonblocking: %s",
socketName, strerror(errno));
(void)close(*pdwClientID);
return -1;
}
return 0;
}
bool CBasicClient::send_data(const char* data, const size_t size)
{
timeval timeout;
if (sock_fd == -1)
return false;
timeout.tv_sec = TIMEOUT_SEC;
timeout.tv_usec = TIMEOUT_USEC;
if (::send_data(sock_fd, data, size, timeout) == false)
{
printf("[CBasicClient] send failed: %s\n", getSocketName());
close_connection();
return false;
}
return true;
}