lbbs/src/log.c

/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
 * log
 *   - logger
 *
 * Copyright (C) 2004-2025  Leaflet <leaflet@leafok.com>
 */

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

enum _log_constant_t
{
        STR_LOG_TIME_MAX_LEN = 50,
};

static FILE *fp_common_log;
static FILE *fp_error_log;

int log_begin(const char *common_log_file, const 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(enum log_level_t 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	1.27	/* SPDX-License-Identifier: GPL-3.0-or-later */
2			/*
3			* log
4			* - logger
5			*
6	sysadm	1.28	* Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
7	sysadm	1.27	*/
8	sysadm	1.1
9	sysadm	1.26	#include "common.h"
10			#include "io.h"
11	sysadm	1.21	#include "log.h"
12	sysadm	1.6	#include <stdarg.h>
13	sysadm	1.24	#include <string.h>
14	sysadm	1.6	#include <time.h>
15	sysadm	1.10	#include <unistd.h>
16	sysadm	1.24	#include <sys/types.h>
17	sysadm	1.19
18	sysadm	1.30	enum _log_constant_t
19			{
20			STR_LOG_TIME_MAX_LEN = 50,
21			};
22	sysadm	1.22
23			static FILE *fp_common_log;
24			static FILE *fp_error_log;
25	sysadm	1.1
26	sysadm	1.29	int log_begin(const char common_log_file, const char error_log_file)
27	sysadm	1.1	{
28	sysadm	1.20	fp_common_log = fopen(common_log_file, "a");
29			if (fp_common_log == NULL)
30	sysadm	1.11	{
31			perror("log_begin failed\n");
32			return -1;
33			}
34	sysadm	1.1
35	sysadm	1.20	fp_error_log = fopen(error_log_file, "a");
36			if (fp_error_log == NULL)
37	sysadm	1.11	{
38			perror("log_begin failed\n");
39			return -2;
40			}
41	sysadm	1.1
42	sysadm	1.11	return 0;
43	sysadm	1.1	}
44
45	sysadm	1.13	void log_end()
46	sysadm	1.1	{
47	sysadm	1.20	fclose(fp_common_log);
48			fclose(fp_error_log);
49	sysadm	1.1	}
50
51	sysadm	1.22	inline static void log_head(char buf, size_t len, int log_level, const char app_file, int app_line)
52	sysadm	1.2	{
53	sysadm	1.11	time_t t;
54	sysadm	1.18	struct tm gm_tm;
55	sysadm	1.22	char s_time[STR_LOG_TIME_MAX_LEN + 1];
56	sysadm	1.9
57	sysadm	1.18	time(&t);
58			gmtime_r(&t, &gm_tm);
59			strftime(s_time, sizeof(s_time), "%Y-%m-%d %H:%M:%S", &gm_tm);
60	sysadm	1.9
61	sysadm	1.22	if (log_level == LOG_LEVEL_COMMON)
62			{
63			snprintf(buf, len, "[%s] [%d] [INFO] ", s_time, getpid());
64			}
65			else // if (log_level == LOG_LEVEL_ERROR)
66			{
67	sysadm	1.23	snprintf(buf, len, "[%s] [%d] [ERROR] [%s:%d] ", s_time, getpid(), app_file, app_line);
68	sysadm	1.22	}
69	sysadm	1.2	}
70
71	sysadm	1.29	int log_printf(enum log_level_t log_level, const char app_file, int app_line, const char format, ...)
72	sysadm	1.1	{
73	sysadm	1.11	va_list args;
74			int retval;
75	sysadm	1.21	char buf[LINE_BUFFER_LEN];
76	sysadm	1.22	FILE *fp_log;
77	sysadm	1.2
78	sysadm	1.22	fp_log = (log_level == LOG_LEVEL_ERROR ? fp_error_log : fp_common_log);
79	sysadm	1.1
80	sysadm	1.22	log_head(buf, sizeof(buf), log_level, app_file, app_line);
81	sysadm	1.14	strncat(buf, format, sizeof(buf) - strnlen(buf, sizeof(buf)));
82	sysadm	1.3
83	sysadm	1.11	va_start(args, format);
84	sysadm	1.22	retval = vfprintf(fp_log, buf, args);
85	sysadm	1.11	va_end(args);
86	sysadm	1.2
87	sysadm	1.22	fflush(fp_log);
88	sysadm	1.1
89	sysadm	1.11	return retval;
90	sysadm	1.1	}
91	sysadm	1.5
92	sysadm	1.20	int log_common_redir(int fd)
93	sysadm	1.5	{
94	sysadm	1.11	int ret;
95	sysadm	1.20	close(fileno(fp_common_log));
96			ret = dup2(fd, fileno(fp_common_log));
97	sysadm	1.11	return ret;
98	sysadm	1.5	}
99
100	sysadm	1.20	int log_error_redir(int fd)
101	sysadm	1.5	{
102	sysadm	1.11	int ret;
103	sysadm	1.20	close(fileno(fp_error_log));
104			ret = dup2(fd, fileno(fp_error_log));
105	sysadm	1.11	return ret;
106	sysadm	1.5	}
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