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/*************************************************************************** |
/* SPDX-License-Identifier: GPL-3.0-or-later */ |
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log.c - description |
/* |
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------------------- |
* log |
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Copyright : (C) 2004-2025 by Leaflet |
* - logger |
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Email : leaflet@leafok.com |
* |
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***************************************************************************/ |
* Copyright (C) 2004-2026 Leaflet <leaflet@leafok.com> |
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*/ |
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/*************************************************************************** |
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* * |
#ifdef HAVE_CONFIG_H |
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* This program is free software; you can redistribute it and/or modify * |
#include "config.h" |
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* it under the terms of the GNU General Public License as published by * |
#endif |
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* the Free Software Foundation; either version 3 of the License, or * |
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* (at your option) any later version. * |
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* * |
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***************************************************************************/ |
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#include "log.h" |
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#include "io.h" |
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#include "common.h" |
#include "common.h" |
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#include <stdio.h> |
#include "io.h" |
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#include "log.h" |
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#include <errno.h> |
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#include <stdarg.h> |
#include <stdarg.h> |
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#include <sys/types.h> |
#include <string.h> |
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#include <time.h> |
#include <time.h> |
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#include <unistd.h> |
#include <unistd.h> |
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#include <sys/types.h> |
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#define _POSIX_C_SOURCE 200809L |
enum _log_constant_t |
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#include <string.h> |
{ |
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STR_LOG_TIME_MAX_LEN = 50, |
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}; |
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FILE *fp_common_log; |
static char path_common_log[FILE_PATH_LEN]; |
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FILE *fp_error_log; |
static char path_error_log[FILE_PATH_LEN]; |
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static FILE *fp_common_log = NULL; |
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static FILE *fp_error_log = NULL; |
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static int redir_common_log = 0; |
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static int redir_error_log = 0; |
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int log_begin(const char *common_log_file, const char *error_log_file) |
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{ |
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strncpy(path_common_log, common_log_file, sizeof(path_common_log) - 1); |
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path_common_log[sizeof(path_common_log) - 1] = '\0'; |
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strncpy(path_error_log, error_log_file, sizeof(path_error_log) - 1); |
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path_error_log[sizeof(path_error_log) - 1] = '\0'; |
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int log_begin(char *common_log_file, char *error_log_file) |
fp_common_log = fopen(path_common_log, "a"); |
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{ |
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fp_common_log = fopen(common_log_file, "a"); |
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if (fp_common_log == NULL) |
if (fp_common_log == NULL) |
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{ |
{ |
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perror("log_begin failed\n"); |
fprintf(stderr, "fopen(%s) error: %s\n", path_common_log, strerror(errno)); |
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return -1; |
return -1; |
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} |
} |
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fp_error_log = fopen(error_log_file, "a"); |
fp_error_log = fopen(path_error_log, "a"); |
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if (fp_error_log == NULL) |
if (fp_error_log == NULL) |
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{ |
{ |
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perror("log_begin failed\n"); |
fprintf(stderr, "fopen(%s) error: %s\n", path_error_log, strerror(errno)); |
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fclose(fp_common_log); |
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fp_common_log = NULL; |
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return -2; |
return -2; |
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} |
} |
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redir_common_log = 0; |
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redir_error_log = 0; |
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return 0; |
return 0; |
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} |
} |
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void log_end() |
void log_end() |
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{ |
{ |
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fclose(fp_common_log); |
if (fp_common_log) |
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fclose(fp_error_log); |
{ |
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fclose(fp_common_log); |
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fp_common_log = NULL; |
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} |
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if (fp_error_log) |
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{ |
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fclose(fp_error_log); |
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fp_error_log = NULL; |
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} |
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} |
} |
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int log_head(char *buf, size_t len) |
inline static int log_head(char *buf, size_t len, int log_level, const char *app_file, int app_line) |
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{ |
{ |
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time_t t; |
time_t t; |
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struct tm gm_tm; |
struct tm gm_tm; |
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char s_time[256]; |
char s_time[STR_LOG_TIME_MAX_LEN + 1]; |
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int ret; |
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time(&t); |
time(&t); |
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gmtime_r(&t, &gm_tm); |
gmtime_r(&t, &gm_tm); |
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strftime(s_time, sizeof(s_time), "%Y-%m-%d %H:%M:%S", &gm_tm); |
strftime(s_time, sizeof(s_time), "%Y-%m-%d %H:%M:%S", &gm_tm); |
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snprintf(buf, len, "[%s] [%d] ", s_time, getpid()); |
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return 0; |
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} |
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int log_common(const char *format, ...) |
if (log_level == LOG_LEVEL_COMMON) |
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{ |
{ |
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va_list args; |
ret = snprintf(buf, len, "[%s] [%d] [INFO] ", s_time, getpid()); |
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int retval; |
} |
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char buf[LINE_BUFFER_LEN]; |
else if (log_level == LOG_LEVEL_ERROR) |
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{ |
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log_head(buf, sizeof(buf)); |
ret = snprintf(buf, len, "[%s] [%d] [ERROR] [%s:%d] ", s_time, getpid(), app_file, app_line); |
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strncat(buf, format, sizeof(buf) - strnlen(buf, sizeof(buf))); |
} |
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else // if (log_level == LOG_LEVEL_DEBUG) |
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va_start(args, format); |
{ |
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retval = vfprintf(fp_common_log, buf, args); |
ret = snprintf(buf, len, "[%s] [%d] [DEBUG] [%s:%d] ", s_time, getpid(), app_file, app_line); |
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va_end(args); |
} |
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fflush(fp_common_log); |
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return retval; |
return ret; |
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} |
} |
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int log_error(const char *format, ...) |
int log_printf(enum log_level_t log_level, const char *app_file, int app_line, const char *format, ...) |
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{ |
{ |
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va_list args; |
va_list args; |
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int retval; |
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char buf[LINE_BUFFER_LEN]; |
char buf[LINE_BUFFER_LEN]; |
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FILE *fp_log; |
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int offset; |
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int ret; |
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fp_log = (log_level == LOG_LEVEL_COMMON ? fp_common_log : fp_error_log); |
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log_head(buf, sizeof(buf)); |
offset = log_head(buf, sizeof(buf), log_level, app_file, app_line); |
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strncat(buf, format, sizeof(buf) - strnlen(buf, sizeof(buf))); |
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va_start(args, format); |
va_start(args, format); |
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retval = vfprintf(fp_error_log, buf, args); |
ret = vsnprintf(buf + offset, sizeof(buf) - (size_t)offset, format, args); |
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va_end(args); |
va_end(args); |
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fflush(fp_error_log); |
if (ret < 0) |
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{ |
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// Encoding error |
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return -1; |
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} |
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else if (offset + ret + 1 >= sizeof(buf)) |
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{ |
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buf[sizeof(buf) - 2] = '\n'; // Add newline for truncated messages |
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buf[sizeof(buf) - 1] = '\0'; // Ensure null termination |
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if (fputs(buf, fp_log) == EOF) |
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{ |
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return -3; // Write error |
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} |
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ret = -2; // Indicate truncation |
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} |
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else |
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{ |
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buf[offset + ret] = '\n'; // Add newline |
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buf[offset + ret + 1] = '\0'; // Ensure null termination |
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if (fputs(buf, fp_log) == EOF) |
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{ |
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return -3; // Write error |
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} |
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ret = offset + ret + 1; // Return number of characters written (including newline) |
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} |
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return retval; |
if (fflush(fp_log) == EOF) |
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{ |
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return -4; // Flush error |
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} |
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return ret; |
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} |
} |
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int log_common_redir(int fd) |
int log_common_redir(int fd) |
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{ |
{ |
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int ret; |
redir_common_log = 1; |
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close(fileno(fp_common_log)); |
return dup2(fd, fileno(fp_common_log)); |
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ret = dup2(fd, fileno(fp_common_log)); |
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return ret; |
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} |
} |
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int log_error_redir(int fd) |
int log_error_redir(int fd) |
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{ |
{ |
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int ret; |
redir_error_log = 1; |
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close(fileno(fp_error_log)); |
return dup2(fd, fileno(fp_error_log)); |
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ret = dup2(fd, fileno(fp_error_log)); |
} |
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return ret; |
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int log_restart(void) |
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{ |
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FILE *fp_common = NULL; |
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FILE *fp_error = NULL; |
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if (!redir_common_log) |
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{ |
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fp_common = fopen(path_common_log, "a"); |
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if (fp_common == NULL) |
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{ |
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log_error("fopen(%s) error: %s", path_common_log, strerror(errno)); |
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return -1; |
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} |
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} |
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if (!redir_error_log) |
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{ |
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fp_error = fopen(path_error_log, "a"); |
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if (fp_error == NULL) |
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{ |
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log_error("fopen(%s) error: %s", path_error_log, strerror(errno)); |
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if (fp_common) |
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{ |
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fclose(fp_common); |
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} |
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return -2; |
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} |
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} |
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// Apply new file pointers |
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if (fp_common) |
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{ |
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fclose(fp_common_log); |
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fp_common_log = fp_common; |
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} |
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if (fp_error) |
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{ |
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fclose(fp_error_log); |
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fp_error_log = fp_error; |
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} |
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return 0; |
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} |
} |