100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/*
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This is part of WHY2
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Copyright (C) 2022 Václav Šmejkal
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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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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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <why2/logger/logger.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <time.h>
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#include <sys/stat.h>
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#include <why2/logger/flags.h>
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logFile initLogger(char *directoryPath)
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{
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//VARIABLES
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struct stat st;
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struct dirent *entry;
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time_t timeL = time(NULL);
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struct tm tm = *localtime(&timeL);
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int buffer = 1;
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int file;
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char *filePath = malloc(strlen(directoryPath) + 1 + strlen(LOG_FORMAT) + 1);
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char *dateBuffer = malloc(strlen(LOG_FORMAT_START) + 1);
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DIR *dir;
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sprintf(dateBuffer, LOG_FORMATTING_START, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
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//CREATE directoryPath DIRECTORY IF IT DOESN'T EXISTS ALREADY
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if (stat(directoryPath, &st) == -1)
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{
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mkdir(directoryPath, 0700);
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}
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//COUNT HOW MANY LOGS WERE GENERATED THIS DAY
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dir = opendir(directoryPath);
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while ((entry = readdir(dir)) != NULL)
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{
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if (entry -> d_type == DT_REG)
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{
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if (strncmp(dateBuffer, entry -> d_name, strlen(dateBuffer)) == 0) buffer++;
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}
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}
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if (buffer > MAX_USAGE) //MAX_USAGE WAS REACHED
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{
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file = INVALID_FILE;
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goto deallocation;
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}
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sprintf(filePath, LOG_FORMATTING, directoryPath, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, buffer); //GENERATE LOG-NAME
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file = open(filePath, O_WRONLY | O_APPEND | O_CREAT, 0644);
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deallocation:
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//DEALLOCATION
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free(dateBuffer);
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closedir(dir);
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return (logFile)
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{
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file,
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filePath
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};
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}
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void writeLog(int loggerFile, char *logMessage)
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{
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//VARIABLES
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char *buffer = malloc(strlen(WRITE_FORMAT) + strlen(logMessage) + 2);
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time_t timeL = time(NULL);
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struct tm tm = *localtime(&timeL);
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sprintf(buffer, WRITE_FORMATTING, tm.tm_hour, tm.tm_min, tm.tm_sec, logMessage); //LOAD MESSAGE
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write(loggerFile, buffer, strlen(buffer)); //WRITE (YAY)
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//DEALLOCATION
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free(buffer);
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} |