1 /*
2  *  Copyright (c) 2021, The OpenThread Authors.
3  *  All rights reserved.
4  *
5  *  Redistribution and use in source and binary forms, with or without
6  *  modification, are permitted provided that the following conditions are met:
7  *  1. Redistributions of source code must retain the above copyright
8  *     notice, this list of conditions and the following disclaimer.
9  *  2. Redistributions in binary form must reproduce the above copyright
10  *     notice, this list of conditions and the following disclaimer in the
11  *     documentation and/or other materials provided with the distribution.
12  *  3. Neither the name of the copyright holder nor the
13  *     names of its contributors may be used to endorse or promote products
14  *     derived from this software without specific prior written permission.
15  *
16  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26  *  POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #include "openthread-posix-config.h"
30 #include "platform-posix.h"
31 
32 #include <arpa/inet.h>
33 
34 namespace ot {
35 namespace Posix {
36 namespace Ip6Utils {
37 
38 /**
39  * This utility class converts binary IPv6 address to text format.
40  *
41  */
42 class Ip6AddressString
43 {
44 public:
45     /**
46      * The constructor of this converter.
47      *
48      * @param[in]   aAddress    A pointer to a buffer holding an IPv6 address.
49      *
50      */
Ip6AddressString(const void * aAddress)51     Ip6AddressString(const void *aAddress)
52     {
53         VerifyOrDie(inet_ntop(AF_INET6, aAddress, mBuffer, sizeof(mBuffer)) != nullptr, OT_EXIT_ERROR_ERRNO);
54     }
55 
56     /**
57      * This method returns the string as a null-terminated C string.
58      *
59      * @returns The null-terminated C string.
60      *
61      */
AsCString(void) const62     const char *AsCString(void) const { return mBuffer; }
63 
64 private:
65     char mBuffer[INET6_ADDRSTRLEN];
66 };
67 
68 } // namespace Ip6Utils
69 } // namespace Posix
70 } // namespace ot
71