xref: /openssl/apps/include/log.h (revision 8a2ec00d)
1 /*
2  * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9 
10 #ifndef OSSL_APPS_LOG_H
11 # define OSSL_APPS_LOG_H
12 
13 # include <openssl/bio.h>
14 # if !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WINDOWS) \
15     && !defined(OPENSSL_NO_SOCK) && !defined(OPENSSL_NO_POSIX_IO)
16 #  include <syslog.h>
17 # else
18 #  define LOG_EMERG   0
19 #  define LOG_ALERT   1
20 #  define LOG_CRIT    2
21 #  define LOG_ERR     3
22 #  define LOG_WARNING 4
23 #  define LOG_NOTICE  5
24 #  define LOG_INFO    6
25 #  define LOG_DEBUG   7
26 # endif
27 
28 # undef LOG_TRACE
29 # define LOG_TRACE (LOG_DEBUG + 1)
30 
31 int log_set_verbosity(const char *prog, int level);
32 int log_get_verbosity(void);
33 
34 /*-
35  * Output a message using the trace API with the given category
36  * if the category is >= 0 and tracing is enabled.
37  * Log the message to syslog if multi-threaded HTTP_DAEMON, else to bio_err
38  * if the verbosity is sufficient for the given level of severity.
39  * Yet cannot do both types of output in strict ANSI mode.
40  * category: trace category as defined in trace.h, or -1
41  * prog: the name of the current app, or NULL
42  * level: the severity of the message, e.g., LOG_ERR
43  * fmt: message format, which should not include a trailing newline
44  * ...: potential extra parameters like with printf()
45  * returns nothing
46  */
47 void trace_log_message(int category,
48                        const char *prog, int level, const char *fmt, ...);
49 
50 #endif /* OSSL_APPS_LOG_H */
51