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-/* Copyright (c) 2001, Matej Pfajfar.
- * Copyright (c) 2001-2004, Roger Dingledine.
- * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
- * Copyright (c) 2007-2010, The Tor Project, Inc. */
-/* See LICENSE for licensing information */
-
-/**
- * \file log.h
- *
- * \brief Headers for log.c
- **/
-
-#ifndef _TOR_LOG_H
-
-#include "compat.h"
-
-#ifdef HAVE_SYSLOG_H
-#include <syslog.h>
-#define LOG_WARN LOG_WARNING
-#if LOG_DEBUG < LOG_ERR
-#error "Your syslog.h thinks high numbers are more important. " \
- "We aren't prepared to deal with that."
-#endif
-#else
-/* Note: Syslog's logging code refers to priorities, with 0 being the most
- * important. Thus, all our comparisons needed to be reversed when we added
- * syslog support.
- *
- * The upshot of this is that comments about log levels may be messed up: for
- * "maximum severity" read "most severe" and "numerically *lowest* severity".
- */
-
-/** Debug-level severity: for hyper-verbose messages of no interest to
- * anybody but developers. */
-#define LOG_DEBUG 7
-/** Info-level severity: for messages that appear frequently during normal
- * operation. */
-#define LOG_INFO 6
-/** Notice-level severity: for messages that appear infrequently
- * during normal operation; that the user will probably care about;
- * and that are not errors.
- */
-#define LOG_NOTICE 5
-/** Warn-level severity: for messages that only appear when something has gone
- * wrong. */
-#define LOG_WARN 4
-/** Error-level severity: for messages that only appear when something has gone
- * very wrong, and the Tor process can no longer proceed. */
-#define LOG_ERR 3
-#endif
-
-/* Logging domains */
-
-/** Catch-all for miscellaneous events and fatal errors. */
-#define LD_GENERAL (1u<<0)
-/** The cryptography subsystem. */
-#define LD_CRYPTO (1u<<1)
-/** Networking. */
-#define LD_NET (1u<<2)
-/** Parsing and acting on our configuration. */
-#define LD_CONFIG (1u<<3)
-/** Reading and writing from the filesystem. */
-#define LD_FS (1u<<4)
-/** Other servers' (non)compliance with the Tor protocol. */
-#define LD_PROTOCOL (1u<<5)
-/** Memory management. */
-#define LD_MM (1u<<6)
-/** HTTP implementation. */
-#define LD_HTTP (1u<<7)
-/** Application (socks) requests. */
-#define LD_APP (1u<<8)
-/** Communication via the controller protocol. */
-#define LD_CONTROL (1u<<9)
-/** Building, using, and managing circuits. */
-#define LD_CIRC (1u<<10)
-/** Hidden services. */
-#define LD_REND (1u<<11)
-/** Internal errors in this Tor process. */
-#define LD_BUG (1u<<12)
-/** Learning and using information about Tor servers. */
-#define LD_DIR (1u<<13)
-/** Learning and using information about Tor servers. */
-#define LD_DIRSERV (1u<<14)
-/** Onion routing protocol. */
-#define LD_OR (1u<<15)
-/** Generic edge-connection functionality. */
-#define LD_EDGE (1u<<16)
-#define LD_EXIT LD_EDGE
-/** Bandwidth accounting. */
-#define LD_ACCT (1u<<17)
-/** Router history */
-#define LD_HIST (1u<<18)
-/** OR handshaking */
-#define LD_HANDSHAKE (1u<<19)
-/** Number of logging domains in the code. */
-#define N_LOGGING_DOMAINS 20
-
-typedef uint32_t log_domain_mask_t;
-
-/** Configures which severities are logged for each logging domain for a given
- * log target. */
-typedef struct log_severity_list_t {
- /** For each log severity, a bitmask of which domains a given logger is
- * logging. */
- log_domain_mask_t masks[LOG_DEBUG-LOG_ERR+1];
-} log_severity_list_t;
-
-#ifdef LOG_PRIVATE
-/** Given a severity, yields an index into log_severity_list_t.masks to use
- * for that severity. */
-#define SEVERITY_MASK_IDX(sev) ((sev) - LOG_ERR)
-#endif
-
-/** Callback type used for add_callback_log. */
-typedef void (*log_callback)(int severity, uint32_t domain, const char *msg);
-
-void init_logging(void);
-int parse_log_level(const char *level);
-const char *log_level_to_string(int level);
-int parse_log_severity_config(const char **cfg,
- log_severity_list_t *severity_out);
-void set_log_severity_config(int minSeverity, int maxSeverity,
- log_severity_list_t *severity_out);
-void add_stream_log(const log_severity_list_t *severity, const char *name,
- int fd);
-int add_file_log(const log_severity_list_t *severity, const char *filename);
-#ifdef HAVE_SYSLOG_H
-int add_syslog_log(const log_severity_list_t *severity);
-#endif
-int add_callback_log(const log_severity_list_t *severity, log_callback cb);
-int get_min_log_level(void);
-void switch_logs_debug(void);
-void logs_free_all(void);
-void add_temp_log(int min_severity);
-void close_temp_logs(void);
-void rollback_log_changes(void);
-void mark_logs_temp(void);
-void change_callback_log_severity(int loglevelMin, int loglevelMax,
- log_callback cb);
-void log_set_application_name(const char *name);
-
-/* Outputs a message to stdout */
-void tor_log(int severity, log_domain_mask_t domain, const char *format, ...)
- CHECK_PRINTF(3,4);
-#define log tor_log /* hack it so we don't conflict with log() as much */
-
-#ifdef __GNUC__
-extern int _log_global_min_severity;
-
-void _log_fn(int severity, log_domain_mask_t domain,
- const char *funcname, const char *format, ...)
- CHECK_PRINTF(4,5);
-/** Log a message at level <b>severity</b>, using a pretty-printed version
- * of the current function name. */
-#define log_fn(severity, domain, args...) \
- _log_fn(severity, domain, __PRETTY_FUNCTION__, args)
-#define log_debug(domain, args...) \
- STMT_BEGIN \
- if (PREDICT_UNLIKELY(_log_global_min_severity == LOG_DEBUG)) \
- _log_fn(LOG_DEBUG, domain, __PRETTY_FUNCTION__, args); \
- STMT_END
-#define log_info(domain, args...) \
- _log_fn(LOG_INFO, domain, __PRETTY_FUNCTION__, args)
-#define log_notice(domain, args...) \
- _log_fn(LOG_NOTICE, domain, __PRETTY_FUNCTION__, args)
-#define log_warn(domain, args...) \
- _log_fn(LOG_WARN, domain, __PRETTY_FUNCTION__, args)
-#define log_err(domain, args...) \
- _log_fn(LOG_ERR, domain, __PRETTY_FUNCTION__, args)
-
-#else /* ! defined(__GNUC__) */
-
-void _log_fn(int severity, log_domain_mask_t domain, const char *format, ...);
-void _log_debug(log_domain_mask_t domain, const char *format, ...);
-void _log_info(log_domain_mask_t domain, const char *format, ...);
-void _log_notice(log_domain_mask_t domain, const char *format, ...);
-void _log_warn(log_domain_mask_t domain, const char *format, ...);
-void _log_err(log_domain_mask_t domain, const char *format, ...);
-
-#if defined(_MSC_VER) && _MSC_VER < 1300
-/* MSVC 6 and earlier don't have __func__, or even __LINE__. */
-#define log_fn _log_fn
-#define log_debug _log_debug
-#define log_info _log_info
-#define log_notice _log_notice
-#define log_warn _log_warn
-#define log_err _log_err
-#else
-/* We don't have GCC's varargs macros, so use a global variable to pass the
- * function name to log_fn */
-extern const char *_log_fn_function_name;
-/* We abuse the comma operator here, since we can't use the standard
- * do {...} while (0) trick to wrap this macro, since the macro can't take
- * arguments. */
-#define log_fn (_log_fn_function_name=__func__),_log_fn
-#define log_debug (_log_fn_function_name=__func__),_log_debug
-#define log_info (_log_fn_function_name=__func__),_log_info
-#define log_notice (_log_fn_function_name=__func__),_log_notice
-#define log_warn (_log_fn_function_name=__func__),_log_warn
-#define log_err (_log_fn_function_name=__func__),_log_err
-#endif
-
-#endif /* !GNUC */
-
-# define _TOR_LOG_H
-#endif
-
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