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Diffstat (limited to 'src/microhttpd/mhd_panic.c')
-rw-r--r-- | src/microhttpd/mhd_panic.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/microhttpd/mhd_panic.c b/src/microhttpd/mhd_panic.c new file mode 100644 index 00000000..1efba20d --- /dev/null +++ b/src/microhttpd/mhd_panic.c | |||
@@ -0,0 +1,101 @@ | |||
1 | /* | ||
2 | This file is part of libmicrohttpd | ||
3 | Copyright (C) 2007-2018 Daniel Pittman and Christian Grothoff | ||
4 | Copyright (C) 2014-2022 Evgeny Grin (Karlson2k) | ||
5 | |||
6 | This library 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 | This library 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 | You should have received a copy of the GNU Lesser General Public | ||
17 | License along with this library; if not, write to the Free Software | ||
18 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file microhttpd/mhd_panic.h | ||
23 | * @brief MHD_panic() function and helpers | ||
24 | * @author Daniel Pittman | ||
25 | * @author Christian Grothoff | ||
26 | * @author Karlson2k (Evgeny Grin) | ||
27 | */ | ||
28 | |||
29 | #include "mhd_panic.h" | ||
30 | #include "platform.h" | ||
31 | #include "microhttpd.h" | ||
32 | |||
33 | /** | ||
34 | * Handler for fatal errors. | ||
35 | */ | ||
36 | MHD_PanicCallback mhd_panic = (MHD_PanicCallback) NULL; | ||
37 | |||
38 | /** | ||
39 | * Closure argument for #mhd_panic. | ||
40 | */ | ||
41 | void *mhd_panic_cls = NULL; | ||
42 | |||
43 | |||
44 | /** | ||
45 | * Default implementation of the panic function, | ||
46 | * prints an error message and aborts. | ||
47 | * | ||
48 | * @param cls unused | ||
49 | * @param file name of the file with the problem | ||
50 | * @param line line number with the problem | ||
51 | * @param reason error message with details | ||
52 | */ | ||
53 | _MHD_NORETURN static void | ||
54 | mhd_panic_std (void *cls, | ||
55 | const char *file, | ||
56 | unsigned int line, | ||
57 | const char *reason) | ||
58 | { | ||
59 | (void) cls; /* Mute compiler warning. */ | ||
60 | #ifdef HAVE_MESSAGES | ||
61 | fprintf (stderr, | ||
62 | _ ("Fatal error in GNU libmicrohttpd %s:%u: %s\n"), | ||
63 | file, | ||
64 | line, | ||
65 | reason); | ||
66 | #else /* ! HAVE_MESSAGES */ | ||
67 | (void) file; /* Mute compiler warning. */ | ||
68 | (void) line; /* Mute compiler warning. */ | ||
69 | (void) reason; /* Mute compiler warning. */ | ||
70 | #endif | ||
71 | abort (); | ||
72 | } | ||
73 | |||
74 | |||
75 | /** | ||
76 | * Sets the global error handler to a different implementation. @a cb | ||
77 | * will only be called in the case of typically fatal, serious | ||
78 | * internal consistency issues. These issues should only arise in the | ||
79 | * case of serious memory corruption or similar problems with the | ||
80 | * architecture. While @a cb is allowed to return and MHD will then | ||
81 | * try to continue, this is never safe. | ||
82 | * | ||
83 | * The default implementation that is used if no panic function is set | ||
84 | * simply prints an error message and calls `abort()`. Alternative | ||
85 | * implementations might call `exit()` or other similar functions. | ||
86 | * | ||
87 | * @param cb new error handler or NULL to use default handler | ||
88 | * @param cls passed to @a cb | ||
89 | * @ingroup logging | ||
90 | */ | ||
91 | void | ||
92 | MHD_set_panic_func (MHD_PanicCallback cb, | ||
93 | void *cls) | ||
94 | { | ||
95 | if ((MHD_PanicCallback) NULL != cb) | ||
96 | mhd_panic = cb; | ||
97 | else | ||
98 | mhd_panic = &mhd_panic_std; | ||
99 | |||
100 | mhd_panic_cls = cls; | ||
101 | } | ||