trunk/src/log.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  s_log.c: Logger functions.
 *
 *  Copyright (C) 2002 by the past and present ircd coders, and others.
 *
 *  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 2 of the License, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id$
 */

#include "stdinc.h"

#include "s_log.h"
#include "fileio.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "ircd.h"
#include "s_misc.h"
#include "s_conf.h"
#include "memory.h"
#include "send.h"

/* some older syslogs would overflow at 2024 */
#define LOG_BUFSIZE 2000

static struct {
  char path[PATH_MAX + 1];
  size_t size;
  FBFILE *file;
} log_type_table[LOG_TYPE_LAST];


int
log_add_file(unsigned int type, size_t size, const char *path)
{
  if (log_type_table[type].file)
    fbclose(log_type_table[type].file);

  strlcpy(log_type_table[type].path, path, sizeof(log_type_table[type].path));
  log_type_table[type].size = size;

  return (log_type_table[type].file = fbopen(path, "a")) != NULL;
}

void
log_close_all(void)
{
  unsigned int type = 0;

  while (++type < LOG_TYPE_LAST)
  {
    if (log_type_table[type].file == NULL)
      continue;

    fbclose(log_type_table[type].file);
    log_type_table[type].file = NULL;
  }
}

static int
log_exceed_size(unsigned int type)
{
  struct stat sb;

  if (!log_type_table[type].size)
    return 0;

  if (stat(log_type_table[type].path, &sb) < 0)
    return -1;

  return (size_t)sb.st_size > log_type_table[type].size;
}


static void 
write_log(unsigned int type, const char *message)
{
  char buf[LOG_BUFSIZE];
  size_t nbytes = 0;

  if (log_type_table[type].file == NULL)
    return;

  if (ConfigLoggingEntry.timestamp)
    nbytes = snprintf(buf, sizeof(buf), "[%s] %s\n",
                      smalldate(CurrentTime), message);
  else
    nbytes = snprintf(buf, sizeof(buf), "%s\n", message);

  fbputs(buf, log_type_table[type].file, nbytes);
}
   
void
ilog(unsigned int type, const char *fmt, ...)
{
  char buf[LOG_BUFSIZE];
  va_list args;

  assert(fmt);
  assert(type >= 0 && type < LOG_TYPE_LAST);

  va_start(args, fmt);
  vsnprintf(buf, sizeof(buf), fmt, args);
  va_end(args);

  if (ConfigLoggingEntry.use_logging)
  {
    write_log(type, buf);

    if (log_exceed_size(type) <= 0)
      return;

    snprintf(buf, sizeof(buf), "Rotating logfile %s",
             log_type_table[type].path);
    write_log(type, buf);
    fbclose(log_type_table[type].file);
    log_type_table[type].file = NULL;

    snprintf(buf, sizeof(buf), "%s.old", log_type_table[type].path);
    unlink(buf);
    rename(log_type_table[type].path, buf);
    log_add_file(type, log_type_table[type].size, log_type_table[type].path);
  }
}
Revision:	1248
Committed:	Sat Oct 1 10:02:53 2011 UTC (13 years, 10 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-8/src/s_log.c*
File size:	3317 byte(s)
Log Message:	- add log file rotation
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* s_log.c: Logger functions.
4			*
5			* Copyright (C) 2002 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22	knight	31	* $Id$
23	adx	30	*/
24
25			#include "stdinc.h"
26
27			#include "s_log.h"
28			#include "fileio.h"
29			#include "irc_string.h"
30			#include "sprintf_irc.h"
31			#include "ircd.h"
32			#include "s_misc.h"
33			#include "s_conf.h"
34			#include "memory.h"
35	michael	1248	#include "send.h"
36	adx	30
37			/* some older syslogs would overflow at 2024 */
38			#define LOG_BUFSIZE 2000
39
40	michael	1247	static struct {
41			char path[PATH_MAX + 1];
42			size_t size;
43			FBFILE *file;
44			} log_type_table[LOG_TYPE_LAST];
45	adx	30
46
47	michael	1247	int
48			log_add_file(unsigned int type, size_t size, const char *path)
49	adx	30	{
50	michael	1247	if (log_type_table[type].file)
51			fbclose(log_type_table[type].file);
52	adx	30
53	michael	1247	strlcpy(log_type_table[type].path, path, sizeof(log_type_table[type].path));
54	michael	1248	log_type_table[type].size = size;
55	adx	30
56	michael	1247	return (log_type_table[type].file = fbopen(path, "a")) != NULL;
57			}
58
59			void
60			log_close_all(void)
61	adx	30	{
62	michael	1247	unsigned int type = 0;
63	adx	30
64	michael	1247	while (++type < LOG_TYPE_LAST)
65	adx	30	{
66	michael	1247	if (log_type_table[type].file == NULL)
67			continue;
68
69			fbclose(log_type_table[type].file);
70	michael	1248	log_type_table[type].file = NULL;
71	adx	30	}
72			}
73
74	michael	1248	static int
75			log_exceed_size(unsigned int type)
76			{
77			struct stat sb;
78
79			if (!log_type_table[type].size)
80			return 0;
81
82			if (stat(log_type_table[type].path, &sb) < 0)
83			return -1;
84
85			return (size_t)sb.st_size > log_type_table[type].size;
86			}
87
88
89	adx	30	static void
90	michael	1247	write_log(unsigned int type, const char *message)
91	adx	30	{
92			char buf[LOG_BUFSIZE];
93			size_t nbytes = 0;
94
95	michael	1247	if (log_type_table[type].file == NULL)
96	adx	30	return;
97
98	michael	1247	if (ConfigLoggingEntry.timestamp)
99			nbytes = snprintf(buf, sizeof(buf), "[%s] %s\n",
100			smalldate(CurrentTime), message);
101			else
102			nbytes = snprintf(buf, sizeof(buf), "%s\n", message);
103	michael	1001
104	michael	1247	fbputs(buf, log_type_table[type].file, nbytes);
105	adx	30	}
106
107			void
108	michael	1247	ilog(unsigned int type, const char *fmt, ...)
109	adx	30	{
110			char buf[LOG_BUFSIZE];
111			va_list args;
112
113	michael	1247	assert(fmt);
114			assert(type >= 0 && type < LOG_TYPE_LAST);
115	adx	30
116			va_start(args, fmt);
117	michael	1086	vsnprintf(buf, sizeof(buf), fmt, args);
118	adx	30	va_end(args);
119
120			if (ConfigLoggingEntry.use_logging)
121	michael	1248	{
122	michael	1247	write_log(type, buf);
123	michael	1248
124			if (log_exceed_size(type) <= 0)
125			return;
126
127			snprintf(buf, sizeof(buf), "Rotating logfile %s",
128			log_type_table[type].path);
129			write_log(type, buf);
130			fbclose(log_type_table[type].file);
131			log_type_table[type].file = NULL;
132
133			snprintf(buf, sizeof(buf), "%s.old", log_type_table[type].path);
134			unlink(buf);
135			rename(log_type_table[type].path, buf);
136			log_add_file(type, log_type_table[type].size, log_type_table[type].path);
137			}
138			}