mhd_socket_error_funcs.c (3915B)
1 /* SPDX-License-Identifier: LGPL-2.1-or-later OR (GPL-2.0-or-later WITH eCos-exception-2.0) */ 2 /* 3 This file is part of GNU libmicrohttpd. 4 Copyright (C) 2024-2025 Evgeny Grin (Karlson2k) 5 6 GNU libmicrohttpd is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 GNU libmicrohttpd is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 Alternatively, you can redistribute GNU libmicrohttpd and/or 17 modify it under the terms of the GNU General Public License as 18 published by the Free Software Foundation; either version 2 of 19 the License, or (at your option) any later version, together 20 with the eCos exception, as follows: 21 22 As a special exception, if other files instantiate templates or 23 use macros or inline functions from this file, or you compile this 24 file and link it with other works to produce a work based on this 25 file, this file does not by itself cause the resulting work to be 26 covered by the GNU General Public License. However the source code 27 for this file must still be made available in accordance with 28 section (3) of the GNU General Public License v2. 29 30 This exception does not invalidate any other reasons why a work 31 based on this file might be covered by the GNU General Public 32 License. 33 34 You should have received copies of the GNU Lesser General Public 35 License and the GNU General Public License along with this library; 36 if not, see <https://www.gnu.org/licenses/>. 37 */ 38 39 /** 40 * @file src/mhd2/mhd_socket_error_funcs.c 41 * @brief The definition of mhd_SocketError-related functions 42 * @author Karlson2k (Evgeny Grin) 43 */ 44 45 #include "mhd_sys_options.h" 46 #include "mhd_socket_error_funcs.h" 47 #include "sys_sockets_headers.h" 48 #include "mhd_sockets_macros.h" 49 #include "sys_sockets_types.h" 50 51 MHD_INTERNAL enum mhd_SocketError 52 mhd_socket_error_get_from_sys_err (int socket_err) 53 { 54 if (mhd_SCKT_ERR_IS_EAGAIN (socket_err)) 55 return mhd_SOCKET_ERR_AGAIN; 56 else if (mhd_SCKT_ERR_IS_EINTR (socket_err)) 57 return mhd_SOCKET_ERR_INTR; 58 else if (mhd_SCKT_ERR_IS_CONNRESET (socket_err)) 59 return mhd_SOCKET_ERR_CONNRESET; 60 else if (mhd_SCKT_ERR_IS_CONN_BROKEN (socket_err)) 61 return mhd_SOCKET_ERR_CONN_BROKEN; 62 else if (mhd_SCKT_ERR_IS_PIPE (socket_err)) 63 return mhd_SOCKET_ERR_PIPE; 64 else if (mhd_SCKT_ERR_IS_NOTCONN (socket_err)) 65 return mhd_SOCKET_ERR_NOTCONN; 66 else if (mhd_SCKT_ERR_IS_LOW_MEM (socket_err)) 67 return mhd_SOCKET_ERR_NOMEM; 68 else if (mhd_SCKT_ERR_IS_BADF (socket_err)) 69 return mhd_SOCKET_ERR_BADF; 70 else if (mhd_SCKT_ERR_IS_EINVAL (socket_err)) 71 return mhd_SOCKET_ERR_INVAL; 72 else if (mhd_SCKT_ERR_IS_OPNOTSUPP (socket_err)) 73 return mhd_SOCKET_ERR_OPNOTSUPP; 74 else if (mhd_SCKT_ERR_IS_NOTSOCK (socket_err)) 75 return mhd_SOCKET_ERR_NOTSOCK; 76 77 return mhd_SOCKET_ERR_OTHER; 78 } 79 80 81 MHD_INTERNAL enum mhd_SocketError 82 mhd_socket_error_get_from_socket (MHD_Socket fd) 83 { 84 #if defined(SOL_SOCKET) && defined(SO_ERROR) 85 enum mhd_SocketError err; 86 int sock_err; 87 socklen_t optlen = sizeof (sock_err); 88 89 sock_err = 0; 90 if ((0 == mhd_getsockopt (fd, 91 SOL_SOCKET, 92 SO_ERROR, 93 (void *) &sock_err, 94 &optlen)) 95 && (sizeof(sock_err) == optlen)) 96 return mhd_socket_error_get_from_sys_err (sock_err); 97 98 err = mhd_socket_error_get_from_sys_err (mhd_SCKT_GET_LERR ()); 99 if ((mhd_SOCKET_ERR_NOTSOCK == err) || 100 (mhd_SOCKET_ERR_BADF == err)) 101 return err; 102 #endif /* SOL_SOCKET && SO_ERROR */ 103 return mhd_SOCKET_ERR_NOT_CHECKED; 104 }