lbbs/src/log.c

/***************************************************************************
                                                  log.c  -  description
                                                         -------------------
        Copyright            : (C) 2004-2025 by Leaflet
        Email                : leaflet@leafok.com
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 3 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#define _POSIX_C_SOURCE 200809L

#include "log.h"
#include "io.h"
#include "common.h"
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/types.h>

#define STR_LOG_TIME_MAX_LEN 50

static FILE *fp_common_log;
static FILE *fp_error_log;

int log_begin(char *common_log_file, char *error_log_file)
{
        fp_common_log = fopen(common_log_file, "a");
        if (fp_common_log == NULL)
        {
                perror("log_begin failed\n");
                return -1;
        }

        fp_error_log = fopen(error_log_file, "a");
        if (fp_error_log == NULL)
        {
                perror("log_begin failed\n");
                return -2;
        }

        return 0;
}

void log_end()
{
        fclose(fp_common_log);
        fclose(fp_error_log);
}

inline static void log_head(char *buf, size_t len, int log_level, const char *app_file, int app_line)
{
        time_t t;
        struct tm gm_tm;
        char s_time[STR_LOG_TIME_MAX_LEN + 1];

        time(&t);
        gmtime_r(&t, &gm_tm);
        strftime(s_time, sizeof(s_time), "%Y-%m-%d %H:%M:%S", &gm_tm);

        if (log_level == LOG_LEVEL_COMMON)
        {
                snprintf(buf, len, "[%s] [%d] [INFO] ", s_time, getpid());
        }
        else // if (log_level == LOG_LEVEL_ERROR)
        {
                snprintf(buf, len, "[%s] [%d] [ERROR] [%s:%d] ", s_time, getpid(), app_file, app_line);
        }
}

int log_printf(int log_level, const char *app_file, int app_line, const char *format, ...)
{
        va_list args;
        int retval;
        char buf[LINE_BUFFER_LEN];
        FILE *fp_log;

        fp_log = (log_level == LOG_LEVEL_ERROR ? fp_error_log : fp_common_log);

        log_head(buf, sizeof(buf), log_level, app_file, app_line);
        strncat(buf, format, sizeof(buf) - strnlen(buf, sizeof(buf)));

        va_start(args, format);
        retval = vfprintf(fp_log, buf, args);
        va_end(args);

        fflush(fp_log);

        return retval;
}

int log_common_redir(int fd)
{
        int ret;
        close(fileno(fp_common_log));
        ret = dup2(fd, fileno(fp_common_log));
        return ret;
}

int log_error_redir(int fd)
{
        int ret;
        close(fileno(fp_error_log));
        ret = dup2(fd, fileno(fp_error_log));
        return ret;
}
1	sysadm	1.1	/***************************************************************************
2	sysadm	1.11	log.c - description
3			-------------------
4	sysadm	1.17	Copyright : (C) 2004-2025 by Leaflet
5			Email : leaflet@leafok.com
6	sysadm	1.1	***************************************************************************/
7
8			/***************************************************************************
9			* *
10			* This program is free software; you can redistribute it and/or modify *
11			* it under the terms of the GNU General Public License as published by *
12	sysadm	1.17	* the Free Software Foundation; either version 3 of the License, or *
13	sysadm	1.1	* (at your option) any later version. *
14			* *
15			***************************************************************************/
16
17	sysadm	1.24	#define _POSIX_C_SOURCE 200809L
18
19	sysadm	1.21	#include "log.h"
20	sysadm	1.6	#include "io.h"
21	sysadm	1.21	#include "common.h"
22	sysadm	1.6	#include <stdarg.h>
23	sysadm	1.24	#include <string.h>
24	sysadm	1.6	#include <time.h>
25	sysadm	1.10	#include <unistd.h>
26	sysadm	1.24	#include <sys/types.h>
27	sysadm	1.19
28	sysadm	1.22	#define STR_LOG_TIME_MAX_LEN 50
29
30			static FILE *fp_common_log;
31			static FILE *fp_error_log;
32	sysadm	1.1
33	sysadm	1.20	int log_begin(char common_log_file, char error_log_file)
34	sysadm	1.1	{
35	sysadm	1.20	fp_common_log = fopen(common_log_file, "a");
36			if (fp_common_log == NULL)
37	sysadm	1.11	{
38			perror("log_begin failed\n");
39			return -1;
40			}
41	sysadm	1.1
42	sysadm	1.20	fp_error_log = fopen(error_log_file, "a");
43			if (fp_error_log == NULL)
44	sysadm	1.11	{
45			perror("log_begin failed\n");
46			return -2;
47			}
48	sysadm	1.1
49	sysadm	1.11	return 0;
50	sysadm	1.1	}
51
52	sysadm	1.13	void log_end()
53	sysadm	1.1	{
54	sysadm	1.20	fclose(fp_common_log);
55			fclose(fp_error_log);
56	sysadm	1.1	}
57
58	sysadm	1.22	inline static void log_head(char buf, size_t len, int log_level, const char app_file, int app_line)
59	sysadm	1.2	{
60	sysadm	1.11	time_t t;
61	sysadm	1.18	struct tm gm_tm;
62	sysadm	1.22	char s_time[STR_LOG_TIME_MAX_LEN + 1];
63	sysadm	1.9
64	sysadm	1.18	time(&t);
65			gmtime_r(&t, &gm_tm);
66			strftime(s_time, sizeof(s_time), "%Y-%m-%d %H:%M:%S", &gm_tm);
67	sysadm	1.9
68	sysadm	1.22	if (log_level == LOG_LEVEL_COMMON)
69			{
70			snprintf(buf, len, "[%s] [%d] [INFO] ", s_time, getpid());
71			}
72			else // if (log_level == LOG_LEVEL_ERROR)
73			{
74	sysadm	1.23	snprintf(buf, len, "[%s] [%d] [ERROR] [%s:%d] ", s_time, getpid(), app_file, app_line);
75	sysadm	1.22	}
76	sysadm	1.2	}
77
78	sysadm	1.22	int log_printf(int log_level, const char app_file, int app_line, const char format, ...)
79	sysadm	1.1	{
80	sysadm	1.11	va_list args;
81			int retval;
82	sysadm	1.21	char buf[LINE_BUFFER_LEN];
83	sysadm	1.22	FILE *fp_log;
84	sysadm	1.2
85	sysadm	1.22	fp_log = (log_level == LOG_LEVEL_ERROR ? fp_error_log : fp_common_log);
86	sysadm	1.1
87	sysadm	1.22	log_head(buf, sizeof(buf), log_level, app_file, app_line);
88	sysadm	1.14	strncat(buf, format, sizeof(buf) - strnlen(buf, sizeof(buf)));
89	sysadm	1.3
90	sysadm	1.11	va_start(args, format);
91	sysadm	1.22	retval = vfprintf(fp_log, buf, args);
92	sysadm	1.11	va_end(args);
93	sysadm	1.2
94	sysadm	1.22	fflush(fp_log);
95	sysadm	1.1
96	sysadm	1.11	return retval;
97	sysadm	1.1	}
98	sysadm	1.5
99	sysadm	1.20	int log_common_redir(int fd)
100	sysadm	1.5	{
101	sysadm	1.11	int ret;
102	sysadm	1.20	close(fileno(fp_common_log));
103			ret = dup2(fd, fileno(fp_common_log));
104	sysadm	1.11	return ret;
105	sysadm	1.5	}
106
107	sysadm	1.20	int log_error_redir(int fd)
108	sysadm	1.5	{
109	sysadm	1.11	int ret;
110	sysadm	1.20	close(fileno(fp_error_log));
111			ret = dup2(fd, fileno(fp_error_log));
112	sysadm	1.11	return ret;
113	sysadm	1.5	}
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