apps/include/log.h

   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 */