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#ifndef HEADER_CURL_TRC_H
#define HEADER_CURL_TRC_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
struct Curl_easy;
struct Curl_cfilter;
/**
* Init logging, return != 0 on failure.
*/
CURLcode Curl_trc_init(void);
/**
* Configure tracing. May be called several times during global
* initialization. Later calls may not take effect.
*
* Configuration format supported:
* - comma-separated list of component names to enable logging on.
* E.g. 'http/2,ssl'. Unknown names are ignored. Names are compared
* case-insensitive.
* - component 'all' applies to all known log components
* - prefixing a component with '+' or '-' will en-/disable logging for
* that component
* Example: 'all,-ssl' would enable logging for all components but the
* SSL filters.
*
* @param config configuration string
*/
CURLcode Curl_trc_opt(const char *config);
/* the function used to output verbose information */
void Curl_debug(struct Curl_easy *data, curl_infotype type,
char *ptr, size_t size);
/**
* Output an informational message when transfer's verbose logging is enabled.
*/
void Curl_infof(struct Curl_easy *data,
#if defined(__GNUC__) && !defined(printf) && \
defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
!defined(__MINGW32__)
const char *fmt, ...)
__attribute__((format(printf, 2, 3)));
#else
const char *fmt, ...);
#endif
/**
* Output a failure message on registered callbacks for transfer.
*/
void Curl_failf(struct Curl_easy *data,
#if defined(__GNUC__) && !defined(printf) && \
defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
!defined(__MINGW32__)
const char *fmt, ...)
__attribute__((format(printf, 2, 3)));
#else
const char *fmt, ...);
#endif
#define failf Curl_failf
/**
* Output an informational message when both transfer's verbose logging
* and connection filters verbose logging are enabled.
*/
void Curl_trc_cf_infof(struct Curl_easy *data, struct Curl_cfilter *cf,
#if defined(__GNUC__) && !defined(printf) && \
defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
!defined(__MINGW32__)
const char *fmt, ...)
__attribute__((format(printf, 3, 4)));
#else
const char *fmt, ...);
#endif
#define CURL_LOG_LVL_NONE 0
#define CURL_LOG_LVL_INFO 1
#if !defined(CURL_DISABLE_VERBOSE_STRINGS)
/* informational messages enabled */
#define Curl_trc_is_verbose(data) ((data) && (data)->set.verbose)
#define Curl_trc_cf_is_verbose(cf, data) \
((data) && (data)->set.verbose && \
(cf) && (cf)->cft->log_level >= CURL_LOG_LVL_INFO)
/* explainer: we have some mix configuration and werror settings
* that define HAVE_VARIADIC_MACROS_C99 even though C89 is enforced
* on gnuc and some other compiler. Need to treat carefully.
*/
#if defined(HAVE_VARIADIC_MACROS_C99) && \
defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
#define infof(data, ...) \
do { if(Curl_trc_is_verbose(data)) \
Curl_infof(data, __VA_ARGS__); } while(0)
#define CURL_TRC_CF(data, cf, ...) \
do { if(Curl_trc_cf_is_verbose(cf, data)) \
Curl_trc_cf_infof(data, cf, __VA_ARGS__); } while(0)
#else /* no variadic macro args */
#define infof Curl_infof
#define CURL_TRC_CF Curl_trc_cf_infof
#endif /* variadic macro args */
#else /* !CURL_DISABLE_VERBOSE_STRINGS */
/* All informational messages are not compiled in for size savings */
#define Curl_trc_is_verbose(d) ((void)(d), FALSE)
#define Curl_trc_cf_is_verbose(x,y) ((void)(x), (void)(y), FALSE)
#if defined(HAVE_VARIADIC_MACROS_C99)
#define infof(...) Curl_nop_stmt
#define CURL_TRC_CF(...) Curl_nop_stmt
#define Curl_trc_cf_infof(...) Curl_nop_stmt
#elif defined(HAVE_VARIADIC_MACROS_GCC)
#define infof(x...) Curl_nop_stmt
#define CURL_TRC_CF(x...) Curl_nop_stmt
#define Curl_trc_cf_infof(x...) Curl_nop_stmt
#else
#error "missing VARIADIC macro define, fix and rebuild!"
#endif
#endif /* CURL_DISABLE_VERBOSE_STRINGS */
#endif /* HEADER_CURL_TRC_H */
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