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-/* Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef APACHE_HTTP_LOG_H
-#define APACHE_HTTP_LOG_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include "apr_thread_proc.h"
-
-/**
- * @package Apache logging library
- */
-
-#ifdef HAVE_SYSLOG
-#include <syslog.h>
-
-#ifndef LOG_PRIMASK
-#define LOG_PRIMASK 7
-#endif
-
-#define APLOG_EMERG LOG_EMERG /* system is unusable */
-#define APLOG_ALERT LOG_ALERT /* action must be taken immediately */
-#define APLOG_CRIT LOG_CRIT /* critical conditions */
-#define APLOG_ERR LOG_ERR /* error conditions */
-#define APLOG_WARNING LOG_WARNING /* warning conditions */
-#define APLOG_NOTICE LOG_NOTICE /* normal but significant condition */
-#define APLOG_INFO LOG_INFO /* informational */
-#define APLOG_DEBUG LOG_DEBUG /* debug-level messages */
-
-#define APLOG_LEVELMASK LOG_PRIMASK /* mask off the level value */
-
-#else
-
-#define APLOG_EMERG 0 /* system is unusable */
-#define APLOG_ALERT 1 /* action must be taken immediately */
-#define APLOG_CRIT 2 /* critical conditions */
-#define APLOG_ERR 3 /* error conditions */
-#define APLOG_WARNING 4 /* warning conditions */
-#define APLOG_NOTICE 5 /* normal but significant condition */
-#define APLOG_INFO 6 /* informational */
-#define APLOG_DEBUG 7 /* debug-level messages */
-
-#define APLOG_LEVELMASK 7 /* mask off the level value */
-
-#endif
-
-/* APLOG_NOERRNO is ignored and should not be used. It will be
- * removed in a future release of Apache.
- */
-#define APLOG_NOERRNO (APLOG_LEVELMASK + 1)
-
-/* Use APLOG_TOCLIENT on ap_log_rerror() to give content
- * handlers the option of including the error text in the
- * ErrorDocument sent back to the client. Setting APLOG_TOCLIENT
- * will cause the error text to be saved in the request_rec->notes
- * table, keyed to the string "error-notes", if and only if:
- * - the severity level of the message is APLOG_WARNING or greater
- * - there are no other "error-notes" set in request_rec->notes
- * Once error-notes is set, it is up to the content handler to
- * determine whether this text should be sent back to the client.
- * Note: Client generated text streams sent back to the client MUST
- * be escaped to prevent CSS attacks.
- */
-#define APLOG_TOCLIENT ((APLOG_LEVELMASK + 1) * 2)
-
-/* normal but significant condition on startup, usually printed to stderr */
-#define APLOG_STARTUP ((APLOG_LEVELMASK + 1) * 4)
-
-#ifndef DEFAULT_LOGLEVEL
-#define DEFAULT_LOGLEVEL APLOG_WARNING
-#endif
-
-extern int AP_DECLARE_DATA ap_default_loglevel;
-
-#define APLOG_MARK __FILE__,__LINE__
-
-/**
- * Set up for logging to stderr.
- * @param p The pool to allocate out of
- */
-AP_DECLARE(void) ap_open_stderr_log(apr_pool_t *p);
-
-/**
- * Replace logging to stderr with logging to the given file.
- * @param p The pool to allocate out of
- * @param file Name of the file to log stderr output
- */
-AP_DECLARE(apr_status_t) ap_replace_stderr_log(apr_pool_t *p,
- const char *file);
-
-/**
- * Open the error log and replace stderr with it.
- * @param pconf Not used
- * @param plog The pool to allocate the logs from
- * @param ptemp Pool used for temporary allocations
- * @param s_main The main server
- * @tip ap_open_logs isn't expected to be used by modules, it is
- * an internal core function
- */
-int ap_open_logs(apr_pool_t *pconf, apr_pool_t *plog,
- apr_pool_t *ptemp, server_rec *s_main);
-
-#ifdef CORE_PRIVATE
-
-/**
- * Perform special processing for piped loggers in MPM child
- * processes.
- * @param p Not used
- * @param s Not used
- * @tip ap_logs_child_init is not for use by modules; it is an
- * internal core function
- */
-void ap_logs_child_init(apr_pool_t *p, server_rec *s);
-
-#endif /* CORE_PRIVATE */
-
-/*
- * The primary logging functions, ap_log_error, ap_log_rerror, ap_log_cerror,
- * and ap_log_perror use a printf style format string to build the log message.
- * It is VERY IMPORTANT that you not include any raw data from the network,
- * such as the request-URI or request header fields, within the format
- * string. Doing so makes the server vulnerable to a denial-of-service
- * attack and other messy behavior. Instead, use a simple format string
- * like "%s", followed by the string containing the untrusted data.
- */
-
-/**
- * ap_log_error() - log messages which are not related to a particular
- * request or connection. This uses a printf-like format to log messages
- * to the error_log.
- * @param file The file in which this function is called
- * @param line The line number on which this function is called
- * @param level The level of this error message
- * @param status The status code from the previous command
- * @param s The server on which we are logging
- * @param fmt The format string
- * @param ... The arguments to use to fill out fmt.
- * @tip Use APLOG_MARK to fill out file and line
- * @tip If a request_rec is available, use that with ap_log_rerror()
- * in preference to calling this function. Otherwise, if a conn_rec is
- * available, use that with ap_log_cerror() in preference to calling
- * this function.
- * @warning It is VERY IMPORTANT that you not include any raw data from
- * the network, such as the request-URI or request header fields, within
- * the format string. Doing so makes the server vulnerable to a
- * denial-of-service attack and other messy behavior. Instead, use a
- * simple format string like "%s", followed by the string containing the
- * untrusted data.
- * @deffunc void ap_log_error(const char *file, int line, int level, apr_status_t status, const server_rec *s, const char *fmt, ...)
- */
-AP_DECLARE(void) ap_log_error(const char *file, int line, int level,
- apr_status_t status, const server_rec *s,
- const char *fmt, ...)
- __attribute__((format(printf,6,7)));
-
-/**
- * ap_log_perror() - log messages which are not related to a particular
- * request, connection, or virtual server. This uses a printf-like
- * format to log messages to the error_log.
- * @param file The file in which this function is called
- * @param line The line number on which this function is called
- * @param level The level of this error message
- * @param status The status code from the previous command
- * @param p The pool which we are logging for
- * @param fmt The format string
- * @param ... The arguments to use to fill out fmt.
- * @tip Use APLOG_MARK to fill out file and line
- * @warning It is VERY IMPORTANT that you not include any raw data from
- * the network, such as the request-URI or request header fields, within
- * the format string. Doing so makes the server vulnerable to a
- * denial-of-service attack and other messy behavior. Instead, use a
- * simple format string like "%s", followed by the string containing the
- * untrusted data.
- * @deffunc void ap_log_perror(const char *file, int line, int level, apr_status_t status, apr_pool_t *p, const char *fmt, ...)
- */
-AP_DECLARE(void) ap_log_perror(const char *file, int line, int level,
- apr_status_t status, apr_pool_t *p,
- const char *fmt, ...)
- __attribute__((format(printf,6,7)));
-
-/**
- * ap_log_rerror() - log messages which are related to a particular
- * request. This uses a a printf-like format to log messages to the
- * error_log.
- * @param file The file in which this function is called
- * @param line The line number on which this function is called
- * @param level The level of this error message
- * @param status The status code from the previous command
- * @param r The request which we are logging for
- * @param fmt The format string
- * @param ... The arguments to use to fill out fmt.
- * @tip Use APLOG_MARK to fill out file and line
- * @warning It is VERY IMPORTANT that you not include any raw data from
- * the network, such as the request-URI or request header fields, within
- * the format string. Doing so makes the server vulnerable to a
- * denial-of-service attack and other messy behavior. Instead, use a
- * simple format string like "%s", followed by the string containing the
- * untrusted data.
- * @deffunc void ap_log_rerror(const char *file, int line, int level, apr_status_t status, const request_rec *r, const char *fmt, ...)
- */
-AP_DECLARE(void) ap_log_rerror(const char *file, int line, int level,
- apr_status_t status, const request_rec *r,
- const char *fmt, ...)
- __attribute__((format(printf,6,7)));
-
-/**
- * ap_log_cerror() - log messages which are related to a particular
- * connection. This uses a a printf-like format to log messages to the
- * error_log.
- * @param file The file in which this function is called
- * @param line The line number on which this function is called
- * @param level The level of this error message
- * @param status The status code from the previous command
- * @param c The connection which we are logging for
- * @param fmt The format string
- * @param ... The arguments to use to fill out fmt.
- * @tip Use APLOG_MARK to fill out file and line
- * @tip If a request_rec is available, use that with ap_log_rerror()
- * in preference to calling this function.
- * @warning It is VERY IMPORTANT that you not include any raw data from
- * the network, such as the request-URI or request header fields, within
- * the format string. Doing so makes the server vulnerable to a
- * denial-of-service attack and other messy behavior. Instead, use a
- * simple format string like "%s", followed by the string containing the
- * untrusted data.
- * @note ap_log_cerror() is available starting with Apache 2.0.55.
- * @deffunc void ap_log_cerror(const char *file, int line, int level, apr_status_t status, const conn_rec *c, const char *fmt, ...)
- */
-AP_DECLARE(void) ap_log_cerror(const char *file, int line, int level,
- apr_status_t status, const conn_rec *c,
- const char *fmt, ...)
- __attribute__((format(printf,6,7)));
-
-/**
- * Convert stderr to the error log
- * @param s The current server
- * @deffunc void ap_error_log2stderr(server_rec *s)
- */
-AP_DECLARE(void) ap_error_log2stderr(server_rec *s);
-
-/**
- * Log the current pid of the parent process
- * @param p The pool to use for logging
- * @param fname The name of the file to log to
- */
-AP_DECLARE(void) ap_log_pid(apr_pool_t *p, const char *fname);
-
-/**
- * Retrieve the pid from a pidfile.
- * @param p The pool to use for logging
- * @param filename The name of the file containing the pid
- * @param mypid Pointer to pid_t (valid only if return APR_SUCCESS)
- */
-AP_DECLARE(apr_status_t) ap_read_pid(apr_pool_t *p, const char *filename, pid_t *mypid);
-
-typedef struct piped_log piped_log;
-
-/**
- * The piped logging structure. Piped logs are used to move functionality
- * out of the main server. For example, log rotation is done with piped logs.
- */
-struct piped_log {
- /** The pool to use for the piped log */
- apr_pool_t *p;
- /** The pipe between the server and the logging process */
- apr_file_t *fds[2];
- /* XXX - an #ifdef that needs to be eliminated from public view. Shouldn't
- * be hard */
-#ifdef AP_HAVE_RELIABLE_PIPED_LOGS
- /** The name of the program the logging process is running */
- char *program;
- /** The pid of the logging process */
- apr_proc_t *pid;
-#endif
-};
-
-/**
- * Open the piped log process
- * @param p The pool to allocate out of
- * @param program The program to run in the logging process
- * @return The piped log structure
- * @deffunc piped_log *ap_open_piped_log(apr_pool_t *p, const char *program)
- */
-AP_DECLARE(piped_log *) ap_open_piped_log(apr_pool_t *p, const char *program);
-
-/**
- * Close the piped log and kill the logging process
- * @param pl The piped log structure
- * @deffunc void ap_close_piped_log(piped_log *pl)
- */
-AP_DECLARE(void) ap_close_piped_log(piped_log *pl);
-
-/**
- * A macro to access the read side of the piped log pipe
- * @param pl The piped log structure
- * @return The native file descriptor
- * @deffunc ap_piped_log_read_fd(pl)
- */
-#define ap_piped_log_read_fd(pl) ((pl)->fds[0])
-
-/**
- * A macro to access the write side of the piped log pipe
- * @param pl The piped log structure
- * @return The native file descriptor
- * @deffunc ap_piped_log_read_fd(pl)
- */
-#define ap_piped_log_write_fd(pl) ((pl)->fds[1])
-
-AP_DECLARE_HOOK(void, error_log, (const char *file, int line, int level,
- apr_status_t status, const server_rec *s,
- const request_rec *r, apr_pool_t *pool,
- const char *errstr))
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* !APACHE_HTTP_LOG_H */