1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
// BSD 3-Clause License
//
// Copyright (c) 2019, Guillaume Ballet
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// * 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.
//
// * Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
package pcsc
import (
"encoding/binary"
"net"
)
/**
* @brief Wrapper for the MessageSend() function.
*
* Called by clients to send messages to the server.
* The parameters \p command and \p data are set in the \c sharedSegmentMsg
* struct in order to be sent.
*
* @param[in] command Command to be sent.
* @param[in] dwClientID Client socket handle.
* @param[in] size Size of the message (\p data).
* @param[in] data_void Data to be sent.
*
* @return Same error codes as MessageSend().
*/
func messageSendWithHeader(command uint32, conn net.Conn, data []byte) error {
/* Translate header into bytes */
msgData := make([]byte, 8+len(data))
binary.LittleEndian.PutUint32(msgData[4:], command)
binary.LittleEndian.PutUint32(msgData, uint32(len(data)))
/* Copy payload */
copy(msgData[8:], data)
_, err := conn.Write(msgData)
return err
}
// ClientSetupSession 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.
*/
func clientSetupSession() (net.Conn, error) {
return net.Dial("unix", PCSCDSockName)
}
|
