mhd_panic.c (3942B)
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 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_panic.c 41 * @brief mhd_panic() and MHD_lib_set_panic_func() implementations 42 * @author Karlson2k (Evgeny Grin) 43 */ 44 45 #include "mhd_sys_options.h" 46 47 #include <stdio.h> 48 #ifdef HAVE_STDLIB_H 49 # include <stdlib.h> 50 #elif defined(HAVE_UNISTD_H) 51 # include <unistd.h> 52 #endif 53 #include "sys_null_macro.h" 54 #include "mhd_public_api.h" 55 #include "mhd_panic.h" 56 57 /** 58 * The user handler for panic 59 */ 60 static MHD_PanicCallback user_panic_handler = (MHD_PanicCallback) NULL; 61 62 /** 63 * The closure argument for the #user_panic_handler 64 */ 65 static void *user_panic_handler_cls = NULL; 66 67 MHD_INTERNAL void 68 mhd_panic_init_default (void) 69 { 70 user_panic_handler = (MHD_PanicCallback) NULL; 71 } 72 73 74 MHD_EXTERN_ void 75 MHD_lib_set_panic_func (MHD_PanicCallback cb, 76 void *cls) 77 { 78 user_panic_handler = cb; 79 user_panic_handler_cls = cls; 80 } 81 82 83 MHD_NORETURN_ MHD_INTERNAL void 84 mhd_panic (const char *file, 85 const char *func, 86 unsigned int line, 87 const char *message) 88 { 89 static const char empty_str[1] = ""; 90 if (NULL == file) 91 file = empty_str; 92 if (NULL == func) 93 func = empty_str; 94 if (NULL == message) 95 message = empty_str; 96 if (NULL != user_panic_handler) 97 user_panic_handler (user_panic_handler_cls, 98 file, func, line, message); 99 #ifdef MHD_SUPPORT_LOG_FUNCTIONALITY 100 if (0 == file[0]) 101 fprintf (stderr, 102 "Unrecoverable error detected in GNU libmicrohttpd%s%s\n", 103 (0 == message[0]) ? "" : ": ", 104 message); 105 else 106 { 107 if (0 != func[0]) 108 { 109 fprintf (stderr, 110 "Unrecoverable error detected in GNU libmicrohttpd, " \ 111 "file '%s' at %s:%u%s%s\n", 112 file, func, line, 113 (0 == message[0]) ? "" : ": ", 114 message); 115 } 116 else 117 { 118 fprintf (stderr, 119 "Unrecoverable error detected in GNU libmicrohttpd, " \ 120 "file '%s' at line %u%s%s\n", 121 file, line, 122 (0 == message[0]) ? "" : ": ", 123 message); 124 } 125 } 126 #endif /* MHD_SUPPORT_LOG_FUNCTIONALITY */ 127 abort (); 128 }