underchat
/
ircu2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
ircu2/ircd/ircd_log.c

992 lines
26 KiB
C
Raw Blame History

/************************************************************************
* IRC - Internet Relay Chat, src/ircd_log.c
* Copyright (C) 1999 Thomas Helvey (BleepSoft)
* Copyright (C) 2000 Kevin L. Mitchell <klmitch@mit.edu>
*
* See file AUTHORS in IRC package for additional names of
* the programmers.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 1, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file
* @brief IRC logging implementation.
* @version $Id: ircd_log.c 1620 2006-02-16 03:49:55Z entrope $
*/
#include "config.h"
#include "ircd_log.h"
#include "client.h"
#include "ircd_alloc.h"
#include "ircd_features.h"
#include "ircd_reply.h"
#include "ircd_snprintf.h"
#include "ircd_string.h"
#include "ircd.h"
#include "numeric.h"
#include "s_debug.h"
#include "send.h"
#include "struct.h"
/* #include <assert.h> -- Now using assert in ircd_log.h */
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <syslog.h>
#include <time.h>
#include <unistd.h>
int log_inassert = 0;
#define LOG_BUFSIZE 2048 /**< Maximum length for a log message. */
/** Select default log level cutoff. */
#ifdef DEBUGMODE
# define L_DEFAULT L_DEBUG
#else
# define L_DEFAULT L_INFO
#endif
#define LOG_DOSYSLOG 0x10 /**< Try to use syslog. */
#define LOG_DOFILELOG 0x20 /**< Try to log to a file. */
#define LOG_DOSNOTICE 0x40 /**< Try to notify operators via notice. */
/** Bitmask of valid delivery mechanisms. */
#define LOG_DOMASK (LOG_DOSYSLOG | LOG_DOFILELOG | LOG_DOSNOTICE)
/** Map severity levels to strings and syslog levels */
static struct LevelData {
enum LogLevel level; /**< Log level being described. */
char *string; /**< Textual name of level. */
int syslog; /**< Syslog priority for log level. */
unsigned int snomask; /**< Server notice mask; 0 means use default in LogDesc. */
} levelData[] = {
#define L(level, syslog, mask) { L_ ## level, #level, (syslog), (mask) }
L(CRIT, LOG_CRIT, SNO_OLDSNO),
L(ERROR, LOG_ERR, 0),
L(WARNING, LOG_WARNING, 0),
L(NOTICE, LOG_NOTICE, 0),
L(TRACE, LOG_INFO, 0),
L(INFO, LOG_INFO, 0),
L(DEBUG, LOG_INFO, SNO_DEBUG),
#undef L
{ L_LAST_LEVEL, 0, 0, 0 }
};
/* Just in case some implementation of syslog has them... */
#undef LOG_NONE
#undef LOG_DEFAULT
#undef LOG_NOTFOUND
#define LOG_NONE -1 /**< don't syslog */
#define LOG_DEFAULT 0 /**< syslog to logInfo.facility */
#define LOG_NOTFOUND -2 /**< didn't find a facility corresponding to name */
/** Map names to syslog facilities. */
static struct {
char *name; /**< Textual name of facility. */
int facility; /**< Facility value for syslog(). */
} facilities[] = {
#define F(fac) { #fac, LOG_ ## fac }
F(NONE), F(DEFAULT), F(AUTH),
#ifdef LOG_AUTHPRIV
F(AUTHPRIV),
#endif
F(CRON), F(DAEMON), F(LOCAL0), F(LOCAL1), F(LOCAL2), F(LOCAL3),
F(LOCAL4), F(LOCAL5), F(LOCAL6), F(LOCAL7), F(LPR), F(MAIL),
F(NEWS), F(USER), F(UUCP),
#undef F
{ 0, 0 }
};
#define SNO_NONE 0x00000000 /**< don't send server notices */
#define SNO_NOTFOUND 0xffffffff /**< didn't find a SNO_MASK value for name */
/** Map names to snomask values. */
static struct {
char *name; /**< Name of server notice bit. */
unsigned int snomask; /**< Bitmask corresponding to name. */
} masks[] = {
#define M(mask) { #mask, SNO_ ## mask }
M(NONE), M(OLDSNO), M(SERVKILL), M(OPERKILL), M(HACK2),
M(HACK3), M(UNAUTH), M(TCPCOMMON), M(TOOMANY), M(HACK4),
M(GLINE), M(NETWORK), M(IPMISMATCH), M(THROTTLE), M(OLDREALOP),
M(CONNEXIT), M(DEBUG), M(AUTH),
#undef M
{ 0, 0 }
};
#define LOG_MARK_FILE 0x0001 /**< file has been changed */
#define LOG_MARK_FACILITY 0x0002 /**< facility has been changed */
#define LOG_MARK_SNOMASK 0x0004 /**< snomask has been changed */
#define LOG_MARK_LEVEL 0x0008 /**< level has been changed */
/** Descriptions of all logging subsystems. */
static struct LogDesc {
enum LogSys subsys; /**< number for subsystem */
char *name; /**< subsystem name */
struct LogFile *file; /**< file descriptor for subsystem */
unsigned int mark; /**< subsystem has been changed */
int def_fac; /**< default facility */
unsigned int def_sno; /**< default snomask */
int facility; /**< -1 means don't use syslog */
unsigned int snomask; /**< 0 means no server message */
enum LogLevel level; /**< logging level */
} logDesc[] = {
#define S(sys, p, sn) { LS_##sys, #sys, 0, 0, (p), (sn), (p), (sn), L_DEFAULT }
S(SYSTEM, -1, 0),
S(CONFIG, 0, SNO_OLDSNO),
S(OPERMODE, -1, SNO_HACK4),
S(GLINE, -1, SNO_GLINE),
S(JUPE, -1, SNO_NETWORK),
S(WHO, -1, 0),
S(NETWORK, -1, SNO_NETWORK),
S(OPERKILL, -1, 0),
S(SERVKILL, -1, 0),
S(USER, -1, 0),
S(OPER, -1, SNO_OLDREALOP),
S(RESOLVER, -1, 0),
S(SOCKET, -1, 0),
S(IAUTH, -1, SNO_NETWORK),
S(DEBUG, -1, SNO_DEBUG),
#undef S
{ LS_LAST_SYSTEM, 0, 0, -1, 0, -1, 0 }
};
/** Describes a log file. */
struct LogFile {
struct LogFile *next; /**< next log file descriptor */
struct LogFile **prev_p; /**< what points to us */
int fd; /**< file's descriptor-- -1 if not open */
int ref; /**< how many things refer to us? */
char *file; /**< file name */
};
/** Modifiable static information. */
static struct {
struct LogFile *filelist; /**< list of log files */
struct LogFile *freelist; /**< list of free'd log files */
int facility; /**< default facility */
const char *procname; /**< process's name */
struct LogFile *dbfile; /**< debug file */
} logInfo = { 0, 0, LOG_USER, "ircd", 0 };
/** Helper routine to open a log file if needed.
* If the log file is already open, do nothing.
* @param[in,out] lf Log file to open.
*/
static void
log_open(struct LogFile *lf)
{
/* only open the file if we haven't already */
if (lf && lf->fd < 0) {
lf->fd = open(lf->file, O_WRONLY | O_CREAT | O_APPEND,
S_IRUSR | S_IWUSR);
}
}
#ifdef DEBUGMODE
/** Reopen debug log file. */
static void
log_debug_reopen(void)
{
if (!logInfo.dbfile) /* no open debugging file */
return;
if (!logInfo.dbfile->file) { /* using terminal output */
logInfo.dbfile->fd = 2;
return;
}
/* Ok, it's a real file; close it if necessary and use log_open to open it */
if (logInfo.dbfile->fd >= 0) {
close(logInfo.dbfile->fd);
logInfo.dbfile->fd = -1; /* mark that it's closed for log_open */
}
log_open(logInfo.dbfile);
if (logInfo.dbfile->fd < 0) { /* try again with /dev/null */
if ((logInfo.dbfile->fd = open("/dev/null", O_WRONLY)) < 0)
exit(-1);
}
/* massage the file descriptor to be stderr */
if (logInfo.dbfile->fd != 2) {
int fd;
fd = dup2(logInfo.dbfile->fd, 2);
close(logInfo.dbfile->fd);
logInfo.dbfile->fd = fd;
}
}
/** initialize debugging log file.
* @param[in] usetty If non-zero, log to terminal instead of file.
*/
void
log_debug_init(int usetty)
{
logInfo.dbfile = (struct LogFile*) MyMalloc(sizeof(struct LogFile));
logInfo.dbfile->next = 0; /* initialize debugging filename */
logInfo.dbfile->prev_p = 0;
logInfo.dbfile->fd = -1;
logInfo.dbfile->ref = 1;
if (usetty) /* store pathname to use */
logInfo.dbfile->file = 0;
else
DupString(logInfo.dbfile->file, LOGFILE);
log_debug_reopen(); /* open the debug log */
logDesc[LS_DEBUG].file = logInfo.dbfile; /* remember where it went */
}
#endif /* DEBUGMODE */
/** Set the debug log file name.
* @param[in] file File name, or NULL to select the default.
* @return Zero if the file was reopened; non-zero if not debugging to file.
*/
static int
log_debug_file(const char *file)
{
#ifdef DEBUGMODE
if (!file)
file = LOGFILE;
/* If we weren't started with debugging enabled, or if we're using
* the terminal, don't do anything at all.
*/
if (!logInfo.dbfile || !logInfo.dbfile->file)
return 1;
MyFree(logInfo.dbfile->file); /* free old pathname */
DupString(logInfo.dbfile->file, file); /* store new pathname */
log_debug_reopen(); /* reopen the debug log */
#endif /* DEBUGMODE */
return 0;
}
/** Initialize logging subsystem.
* @param[in] process_name Process name to interactions with syslog.
*/
void
log_init(const char *process_name)
{
/* store the process name; probably belongs in ircd.c, but oh well... */
if (!EmptyString(process_name))
logInfo.procname = process_name;
/* ok, open syslog; default facility: LOG_USER */
openlog(logInfo.procname, LOG_PID | LOG_NDELAY, logInfo.facility);
}
/** Reopen log files (so admins can do things like rotate log files). */
void
log_reopen(void)
{
log_close(); /* close everything...we reopen on demand */
#ifdef DEBUGMODE
log_debug_reopen(); /* reopen debugging log if necessary */
#endif /* DEBUGMODE */
/* reopen syslog, if needed; default facility: LOG_USER */
openlog(logInfo.procname, LOG_PID | LOG_NDELAY, logInfo.facility);
}
/** Close all log files. */
void
log_close(void)
{
struct LogFile *ptr;
closelog(); /* close syslog */
for (ptr = logInfo.filelist; ptr; ptr = ptr->next) {
if (ptr->fd >= 0)
close(ptr->fd); /* close all the files... */
ptr->fd = -1;
}
if (logInfo.dbfile && logInfo.dbfile->file) {
if (logInfo.dbfile->fd >= 0)
close(logInfo.dbfile->fd); /* close the debug log file */
logInfo.dbfile->fd = -1;
}
}
/** Write a logging entry.
* @param[in] subsys Target subsystem.
* @param[in] severity Severity of message.
* @param[in] flags Combination of zero or more of LOG_NOSYSLOG, LOG_NOFILELOG, LOG_NOSNOTICE to suppress certain output.
* @param[in] fmt Format string for message.
*/
void
log_write(enum LogSys subsys, enum LogLevel severity, unsigned int flags,
const char *fmt, ...)
{
va_list vl;
va_start(vl, fmt);
log_vwrite(subsys, severity, flags, fmt, vl);
va_end(vl);
}
/** Write a logging entry using a va_list.
* @param[in] subsys Target subsystem.
* @param[in] severity Severity of message.
* @param[in] flags Combination of zero or more of LOG_NOSYSLOG, LOG_NOFILELOG, LOG_NOSNOTICE to suppress certain output.
* @param[in] fmt Format string for message.
* @param[in] vl Variable-length argument list for message.
*/
void
log_vwrite(enum LogSys subsys, enum LogLevel severity, unsigned int flags,
const char *fmt, va_list vl)
{
struct VarData vd;
struct LogDesc *desc;
struct LevelData *ldata;
struct tm *tstamp;
struct iovec vector[3];
time_t curtime;
char buf[LOG_BUFSIZE];
/* 1234567890123456789012 3 */
/* [2000-11-28 16:11:20] \0 */
char timebuf[23];
/* check basic assumptions */
assert(-1 < (int)subsys);
assert((int)subsys < LS_LAST_SYSTEM);
assert(-1 < (int)severity);
assert((int)severity < L_LAST_LEVEL);
assert(0 == (flags & ~LOG_NOMASK));
assert(0 != fmt);
/* find the log data and the severity data */
desc = &logDesc[subsys];
ldata = &levelData[severity];
/* check the set of ordering assumptions */
assert(desc->subsys == subsys);
assert(ldata->level == severity);
/* check severity... */
if (severity > desc->level)
return;
/* figure out where all we need to log */
if (!(flags & LOG_NOFILELOG) && desc->file) {
log_open(desc->file);
if (desc->file->fd >= 0) /* don't log to file if we can't open the file */
flags |= LOG_DOFILELOG;
}
if (!(flags & LOG_NOSYSLOG) && desc->facility >= 0)
flags |= LOG_DOSYSLOG; /* will syslog */
if (!(flags & LOG_NOSNOTICE) && (desc->snomask != 0 || ldata->snomask != 0))
flags |= LOG_DOSNOTICE; /* will send a server notice */
/* short-circuit if there's nothing to do... */
if (!(flags & LOG_DOMASK))
return;
/* Build the basic log string */
vd.vd_format = fmt;
va_copy(vd.vd_args, vl);
/* save the length for writev */
/* Log format: "SYSTEM [SEVERITY]: log message" */
vector[1].iov_len =
ircd_snprintf(0, buf, sizeof(buf), "%s [%s]: %v", desc->name,
ldata->string, &vd);
/* if we have something to write to... */
if (flags & LOG_DOFILELOG) {
curtime = TStime();
tstamp = localtime(&curtime); /* build the timestamp */
vector[0].iov_len =
ircd_snprintf(0, timebuf, sizeof(timebuf), "[%d-%d-%d %d:%02d:%02d] ",
tstamp->tm_year + 1900, tstamp->tm_mon + 1,
tstamp->tm_mday, tstamp->tm_hour, tstamp->tm_min,
tstamp->tm_sec);
/* set up the remaining parts of the writev vector... */
vector[0].iov_base = timebuf;
vector[1].iov_base = buf;
vector[2].iov_base = (void*) "\n"; /* terminate lines with a \n */
vector[2].iov_len = 1;
/* write it out to the log file */
(void)!writev(desc->file->fd, vector, 3);
}
/* oh yeah, syslog it too... */
if (flags & LOG_DOSYSLOG)
syslog(ldata->syslog | desc->facility, "%s", buf);
/* can't forget server notices... */
if (flags & LOG_DOSNOTICE)
sendto_opmask_butone(0, ldata->snomask ? ldata->snomask : desc->snomask,
"%s", buf);
}
/** Log an appropriate message for kills.
* @param[in] victim %Client being killed.
* @param[in] killer %User or server doing the killing.
* @param[in] inpath Peer that sent us the KILL message.
* @param[in] path Kill path that sent to us by \a inpath.
* @param[in] msg Kill reason.
*/
void
log_write_kill(const struct Client *victim, const struct Client *killer,
const char *inpath, const char *path, const char *msg)
{
if (MyUser(victim))
log_write(IsServer(killer) ? LS_SERVKILL : LS_OPERKILL, L_TRACE, 0,
"A local client %#C KILLED by %#C Path: %s!%s %s",
victim, killer, inpath, path, msg);
else
log_write(IsServer(killer) ? LS_SERVKILL : LS_OPERKILL, L_TRACE, 0,
"KILL from %C For %C Path: %s!%s %s", killer, victim, inpath,
path, msg);
}
/** Find a reference-counted LogFile by file name.
* @param[in] file Name of file.
* @return A log file descriptor with LogFile::ref at least 1.
*/
static struct LogFile *
log_file_create(const char *file)
{
struct LogFile *tmp;
assert(0 != file);
/* if one already exists for that file, return it */
for (tmp = logInfo.filelist; tmp; tmp = tmp->next)
if (!strcmp(tmp->file, file)) {
tmp->ref++;
return tmp;
}
if (logInfo.freelist) { /* pop one off the free list */
tmp = logInfo.freelist;
logInfo.freelist = tmp->next;
} else /* allocate a new one */
tmp = (struct LogFile*) MyMalloc(sizeof(struct LogFile));
tmp->fd = -1; /* initialize the structure */
tmp->ref = 1;
DupString(tmp->file, file);
tmp->next = logInfo.filelist; /* link it into the list... */
tmp->prev_p = &logInfo.filelist;
if (logInfo.filelist)
logInfo.filelist->prev_p = &tmp->next;
logInfo.filelist = tmp;
return tmp;
}
/** Dereference a log file.
* If the reference count is exactly one on entry to this function,
* the file is closed and its structure is freed.
* @param[in] lf Log file to dereference.
*/
static void
log_file_destroy(struct LogFile *lf)
{
assert(0 != lf);
if (--lf->ref == 0) {
if (lf->next) /* clip it out of the list */
lf->next->prev_p = lf->prev_p;
*lf->prev_p = lf->next;
lf->prev_p = 0; /* we won't use it for the free list */
if (lf->fd >= 0)
close(lf->fd);
lf->fd = -1;
MyFree(lf->file); /* free the file name */
lf->next = logInfo.freelist; /* stack it onto the free list */
logInfo.freelist = lf;
}
}
/** Look up a log subsystem by name.
* @param[in] subsys Subsystem name.
* @return Pointer to the subsystem's LogDesc, or NULL if none exists.
*/
static struct LogDesc *
log_find(const char *subsys)
{
int i;
assert(0 != subsys);
/* find the named subsystem */
for (i = 0; i < LS_LAST_SYSTEM; i++)
if (!ircd_strcmp(subsys, logDesc[i].name))
return &logDesc[i];
return 0; /* not found */
}
/** Return canonical version of log subsystem name.
* @param[in] subsys Subsystem name.
* @return A constant string containing the canonical name.
*/
char *
log_canon(const char *subsys)
{
struct LogDesc *desc;
if (!(desc = log_find(subsys)))
return 0;
return desc->name;
}
/** Look up a log level by name.
* @param[in] level Log level name.
* @return LogLevel enumeration, or L_LAST_LEVEL if none exists.
*/
static enum LogLevel
log_lev_find(const char *level)
{
int i;
assert(0 != level);
/* find the named level */
for (i = 0; levelData[i].string; i++)
if (!ircd_strcmp(level, levelData[i].string))
return levelData[i].level;
return L_LAST_LEVEL; /* not found */
}
/** Look up the canonical name for a log level.
* @param[in] lev
* @return A constant string containing the level's canonical name.
*/
static char *
log_lev_name(enum LogLevel lev)
{
assert(-1 < (int)lev);
assert((int)lev < L_LAST_LEVEL);
assert(lev == levelData[lev].level);
return levelData[lev].string;
}
/** Look up a syslog facility by name.
* @param[in] facility Facility name.
* @return Syslog facility value, or LOG_NOTFOUND if none exists.
*/
static int
log_fac_find(const char *facility)
{
int i;
assert(0 != facility);
/* find the named facility */
for (i = 0; facilities[i].name; i++)
if (!ircd_strcmp(facility, facilities[i].name))
return facilities[i].facility;
return LOG_NOTFOUND; /* not found */
}
/** Look up the name for a syslog facility.
* @param[in] fac Facility value.
* @return Canonical name for facility, or NULL if none exists.
*/
static char *
log_fac_name(int fac)
{
int i;
/* find the facility */
for (i = 0; facilities[i].name; i++)
if (facilities[i].facility == fac)
return facilities[i].name;
return 0; /* not found; should never happen */
}
/** Look up a server notice mask by name.
* @param[in] maskname Name of server notice mask.
* @return Bitmask for server notices, or 0 if none exists.
*/
static unsigned int
log_sno_find(const char *maskname)
{
int i;
assert(0 != maskname);
/* find the named snomask */
for (i = 0; masks[i].name; i++)
if (!ircd_strcmp(maskname, masks[i].name))
return masks[i].snomask;
return SNO_NOTFOUND; /* not found */
}
/** Look up the canonical name for a server notice mask.
* @param[in] sno Server notice mask.
* @return Canonical name for the mask, or NULL if none exists.
*/
static char *
log_sno_name(unsigned int sno)
{
int i;
/* find the snomask */
for (i = 0; masks[i].name; i++)
if (masks[i].snomask == sno)
return masks[i].name;
return 0; /* not found; should never happen */
}
/** Set a log file for a particular subsystem.
* @param[in] subsys Subsystem name.
* @param[in] filename Log file to write to.
* @return Zero on success; non-zero on error.
*/
int
log_set_file(const char *subsys, const char *filename)
{
struct LogDesc *desc;
/* find subsystem */
if (!(desc = log_find(subsys)))
return 2;
if (filename)
desc->mark |= LOG_MARK_FILE; /* mark that file has been changed */
else
desc->mark &= ~LOG_MARK_FILE; /* file has been reset to defaults */
/* no change, don't go to the trouble of destroying and recreating */
if (desc->file && desc->file->file && filename &&
!strcmp(desc->file->file, filename))
return 0;
/* debug log is special, since it has to be opened on fd 2 */
if (desc->subsys == LS_DEBUG)
return log_debug_file(filename);
if (desc->file) /* destroy previous entry... */
log_file_destroy(desc->file);
/* set the file to use */
desc->file = filename ? log_file_create(filename) : 0;
return 0;
}
/** Find the log file name for a subsystem.
* @param[in] subsys Subsystem name.
* @return Log file for the subsystem, or NULL if not being logged to a file.
*/
char *
log_get_file(const char *subsys)
{
struct LogDesc *desc;
/* find subsystem */
if (!(desc = log_find(subsys)))
return 0;
return desc->file ? desc->file->file : 0;
}
/** Set the syslog facility for a particular subsystem.
* @param[in] subsys Subsystem name.
* @param[in] facility Facility name to log to.
* @return Zero on success; non-zero on error.
*/
int
log_set_facility(const char *subsys, const char *facility)
{
struct LogDesc *desc;
int fac;
/* find subsystem */
if (!(desc = log_find(subsys)))
return 2;
/* set syslog facility */
if (EmptyString(facility)) {
desc->facility = desc->def_fac;
desc->mark &= ~LOG_MARK_FACILITY;
} else if ((fac = log_fac_find(facility)) != LOG_NOTFOUND) {
desc->facility = fac;
if (fac == desc->def_fac)
desc->mark &= ~LOG_MARK_FACILITY;
else
desc->mark |= LOG_MARK_FACILITY;
} else
return 1;
return 0;
}
/** Find the facility name for a subsystem.
* @param[in] subsys Subsystem name.
* @return Facility name being used, or NULL if not being logged to syslog.
*/
char *
log_get_facility(const char *subsys)
{
struct LogDesc *desc;
/* find subsystem */
if (!(desc = log_find(subsys)))
return 0;
/* find the facility's name */
return log_fac_name(desc->facility);
}
/** Set the server notice mask for a subsystem.
* @param[in] subsys Subsystem name.
* @param[in] snomask Server notice mask name.
* @return Zero on success; non-zero on error.
*/
int
log_set_snomask(const char *subsys, const char *snomask)
{
struct LogDesc *desc;
unsigned int sno = feature_int(FEAT_SNOMASK_DEFAULT);
/* find subsystem */
if (!(desc = log_find(subsys)))
return 2;
/* set snomask value */
if (EmptyString(snomask)) {
desc->snomask = desc->def_sno;
desc->mark &= ~LOG_MARK_SNOMASK;
} else if ((sno = log_sno_find(snomask)) != SNO_NOTFOUND) {
desc->snomask = sno;
if (sno == desc->def_sno)
desc->mark &= ~LOG_MARK_SNOMASK;
else
desc->mark |= LOG_MARK_SNOMASK;
} else
return 1;
return 0;
}
/** Find the server notice mask name for a subsystem.
* @param[in] subsys Subsystem name.
* @return Name of server notice mask being used, or NULL if none.
*/
char *
log_get_snomask(const char *subsys)
{
struct LogDesc *desc;
/* find subsystem */
if (!(desc = log_find(subsys)))
return 0;
/* find the snomask value's name */
return log_sno_name(desc->snomask);
}
/** Set the verbosity level for a subsystem.
* @param[in] subsys Subsystem name.
* @param[in] level Minimum log level.
* @return Zero on success; non-zero on error.
*/
int
log_set_level(const char *subsys, const char *level)
{
struct LogDesc *desc;
enum LogLevel lev;
/* find subsystem */
if (!(desc = log_find(subsys)))
return 2;
/* set logging level */
if (EmptyString(level)) {
desc->level = L_DEFAULT;
desc->mark &= ~LOG_MARK_LEVEL;
} else if ((lev = log_lev_find(level)) != L_LAST_LEVEL) {
desc->level = lev;
if (lev == L_DEFAULT)
desc->mark &= ~LOG_MARK_LEVEL;
else
desc->mark |= LOG_MARK_LEVEL;
} else
return 1;
return 0;
}
/** Find the verbosity level for a subsystem.
* @param[in] subsys Subsystem name.
* @return Minimum verbosity level being used, or NULL on error.
*/
char *
log_get_level(const char *subsys)
{
struct LogDesc *desc;
/* find subsystem */
if (!(desc = log_find(subsys)))
return 0;
/* find the level's name */
return log_lev_name(desc->level);
}
/** Set the default syslog facility.
* @param[in] facility Syslog facility name.
* @return Zero on success, non-zero on error.
*/
int
log_set_default(const char *facility)
{
int fac, oldfac;
oldfac = logInfo.facility;
if (EmptyString(facility))
logInfo.facility = LOG_USER;
else if ((fac = log_fac_find(facility)) != LOG_NOTFOUND &&
fac != LOG_NONE && fac != LOG_DEFAULT)
logInfo.facility = fac;
else
return 1;
if (logInfo.facility != oldfac) {
closelog(); /* reopen syslog with new facility setting */
openlog(logInfo.procname, LOG_PID | LOG_NDELAY, logInfo.facility);
}
return 0;
}
/** Find the default syslog facility name.
* @return Canonical name of default syslog facility, or NULL if none.
*/
char *
log_get_default(void)
{
/* find the facility's name */
return log_fac_name(logInfo.facility);
}
/** Clear all marks. */
void
log_feature_unmark(void)
{
int i;
for (i = 0; i < LS_LAST_SYSTEM; i++)
logDesc[i].mark = 0;
}
/** Reset unmodified fields in all log subsystems to their defaults.
* @param[in] flag If non-zero, clear default syslog facility.
*/
int
log_feature_mark(int flag)
{
int i;
if (flag)
log_set_default(0);
for (i = 0; i < LS_LAST_SYSTEM; i++) {
if (!(logDesc[i].mark & LOG_MARK_FILE)) {
if (logDesc[i].subsys != LS_DEBUG) { /* debug is special */
if (logDesc[i].file) /* destroy previous entry... */
log_file_destroy(logDesc[i].file);
logDesc[i].file = 0;
}
}
if (!(logDesc[i].mark & LOG_MARK_FACILITY)) /* set default facility */
logDesc[i].facility = logDesc[i].def_fac;
if (!(logDesc[i].mark & LOG_MARK_SNOMASK)) /* set default snomask */
logDesc[i].snomask = logDesc[i].def_sno;
if (!(logDesc[i].mark & LOG_MARK_LEVEL)) /* set default level */
logDesc[i].level = L_DEFAULT;
}
return 0; /* we don't have a notify handler */
}
/** Feature list callback to report log settings.
* @param[in] to Client requesting list.
* @param[in] flag If non-zero, report default syslog facility.
*/
void
log_feature_report(struct Client *to, int flag)
{
int i;
for (i = 0; i < LS_LAST_SYSTEM; i++)
{
if (logDesc[i].mark & LOG_MARK_FILE) /* report file */
send_reply(to, SND_EXPLICIT | RPL_STATSFLINE, "F LOG %s FILE %s",
logDesc[i].name, (logDesc[i].file && logDesc[i].file->file ?
logDesc[i].file->file : "(terminal)"));
if (logDesc[i].mark & LOG_MARK_FACILITY) /* report facility */
send_reply(to, SND_EXPLICIT | RPL_STATSFLINE, "F LOG %s FACILITY %s",
logDesc[i].name, log_fac_name(logDesc[i].facility));
if (logDesc[i].mark & LOG_MARK_SNOMASK) /* report snomask */
send_reply(to, SND_EXPLICIT | RPL_STATSFLINE, "F LOG %s SNOMASK %s",
logDesc[i].name, log_sno_name(logDesc[i].snomask));
if (logDesc[i].mark & LOG_MARK_LEVEL) /* report log level */
send_reply(to, SND_EXPLICIT | RPL_STATSFLINE, "F LOG %s LEVEL %s",
logDesc[i].name, log_lev_name(logDesc[i].level));
}
if (flag) /* report default facility */
send_reply(to, SND_EXPLICIT | RPL_STATSFLINE, "F LOG %s",
log_fac_name(logInfo.facility));
}
Reference in New Issue View Git Blame Copy Permalink