增加解析cron定时配置，定时扫描系统

Makefile

@@ -1,17 +1,17 @@
 CROSS_COMPILE ?= 
 CC := $(CROSS_COMPILE)gcc
-CFLAGS += -Os -g -Wall
+
-LIB += -lcurl -lip4tc ./clamscan/clamscan.o ./clamscan/manager.o -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64   -lclamav ./clamscan/shared/libshared.a -lssl -lcrypto -lz -lpthread
+LIB += -lcurl -lip4tc clamscan/clamscan.o clamscan/manager.o -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64   -lclamav ./clamscan/shared/libshared.a -lssl -lcrypto -lz -lpthread
 
 IPTC_CFLAGS += -DHAVE_CONFIG_H -I./libiptc -D_LARGEFILE_SOURCE=1 -D_LARGE_FILES -D_FILE_OFFSET_BITS=64 -D_REENTRANT
 
 OBG = rhost
 
-CL_CFLAGS += -Wall -Os -DHAVE_CONFIG_H -I./clamscan -I./clamscan/shared -I./clamscan/libclamav -I./clamscan/libclamunrar_iface -I/usr/include/json-c -Wdate-time -D_FORTIFY_SOURCE=2  -g -O2  -fstack-protector-strong -Wall -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
+CLAMSCAN_CFLAGS += -Wall -Os -DHAVE_CONFIG_H -I./clamscan -I./clamscan/shared -I./clamscan/libclamav -I./clamscan/libclamunrar_iface -I/usr/include/json-c -Wdate-time -D_FORTIFY_SOURCE=2 -fstack-protector-strong -Wall -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 SHARED_CFLAGS += -Wall -Os -DHAVE_CONFIG_H -I./clamscan -I./clamscan/shared -I./clamscan/libclamav -I./clamscan/libclamunrar_iface -I/usr/include/json-c -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2  -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
+CFLAGS += -Os -g -Wall -DCRON_USE_LOCAL_TIME -DCRON_TEST_MALLOC
 
-
+all: conf.o rhost.o libiptc.o ccronexpr.o 
-all: conf.o rhost.o libiptc.o
 
 	$(CC) $(SHARED_CFLAGS) -c ./clamscan/shared/actions.c  -fPIC -DPIC -o ./clamscan/shared/actions.o
 	$(CC) $(SHARED_CFLAGS) -c ./clamscan/shared/cdiff.c  -fPIC -DPIC -o ./clamscan/shared/cdiff.o
@@ -26,8 +26,8 @@ all: conf.o rhost.o libiptc.o
 	$(CC) $(SHARED_CFLAGS) -c ./clamscan/shared/tar.c  -fPIC -DPIC -o ./clamscan/shared/tar.o
 	$(CC) $(SHARED_CFLAGS) -c ./clamscan/shared/linux/cert_util_linux.c  -fPIC -DPIC -o ./clamscan/shared/linux/cert_util_linux.o
 	ar cr ./clamscan/shared/libshared.a ./clamscan/shared/actions.o ./clamscan/shared/cdiff.o ./clamscan/shared/cert_util.o ./clamscan/shared/clamdcom.o ./clamscan/shared/getopt.o ./clamscan/shared/hostid.o ./clamscan/shared/idmef_logging.o ./clamscan/shared/misc.o ./clamscan/shared/optparser.o ./clamscan/shared/output.o ./clamscan/shared/tar.o ./clamscan/shared/linux/cert_util_linux.o
-	$(CC) $(CL_CFLAGS) -c clamscan/clamscan.c -o clamscan/clamscan.o
+	$(CC) $(CLAMSCAN_CFLAGS) -c clamscan/clamscan.c -o clamscan/clamscan.o
-	$(CC) $(CL_CFLAGS) -c clamscan/manager.c -o clamscan/manager.o
+	$(CC) $(CLAMSCAN_CFLAGS) -c clamscan/manager.c -o clamscan/manager.o
 	$(CC) $(CFLAGS) $^ -o $(OBG) $(LIB)
 	
 	chmod +x $(OBG)
@@ -40,6 +40,6 @@ static: conf.o rhost.o libiptc.o
 
 clean:
 	rm -rf *.o
-	rm libiptc/*.o libiptc/*.a
+	rm -rf libiptc/*.o libiptc/*.a
-	rm clamscan/shared/*.o clamscan/shared/libshared.a clamscan/*.o
+	rm -rf clamscan/shared/*.o clamscan/shared/libshared.a clamscan/*.o
-	rm $(OBG)
+	rm -rf $(OBG)

README.md

@@ -1,5 +1,5 @@
 # denyhosts
-ssh防止暴力破解,适用Debian 8、9、11 Centos 7  
+拒绝主机&杀毒,适用Debian 8、9、11 Centos 7  
 支持钉钉告警和邮件告警  
 支持第三方QQ邮箱告警  
 支持一次运行检测、后台运行检测  
@@ -19,6 +19,7 @@ Centos 7系统请安装libcurl、iptables-devel、libclamav-devel
 
 
 ```
+用法
 cd /root
 git clone https://git.aixiao.me/aixiao/denyhosts  
 cd denyhosts  
@@ -30,10 +31,11 @@ crontab 定时任务,像这样.
 
 
 示列:
-./rhost -d  -r / --exclude-dir="^/sys|^/dev|^/proc|^/opt/infected|^/root|^/home" --move=/opt/infected --max-filesize 1024M -l     #后台运行并扫描病毒
+./rhost -d  -r / --exclude-dir="^/sys|^/dev|^/proc|^/opt/infected|^/root|^/home" --move=/opt/infected --max-filesize 1024M -l clamscan.log    #后台运行并扫描病毒
 
 ./rhost     # 只处理非法攻击
 
+
 ```
 
 
@@ -51,37 +53,38 @@ update-alternatives --set ebtables /usr/sbin/ebtables-legacy
 ```
 配置文件
 global {
-    DAEMON = "off";                         // on开启后台运行，off不开启
-    TIME = "10";                            // 睡眠时间
 
-    CLAMAV = 1;                             // clamav 是否扫描病毒
+    DAEMON = "off";                         // on开启后台运行,off不开启
-    CLAMAV_TIME = "1726";                   // clamav 扫描时间（小时分钟，默认每天运行）
+    TIME = "10";                            // 睡眠时间(大于等于1,单位秒)
     
     PUBLIC_IP = "http://inet-ip.info";      // 获取公网IP
     
     
-    IPV4_RESTRICTION = 1;                   // 是否启用IP白名单
+    IS_BLOCKED = 1;                         // 是否封禁攻击IP(1开启,非1关闭)
-    IPV4_WHITE_LIST = "1.1.1.1 ";           // IP白名单
-    
-    
-    REGION = 1;                             // 是否启用地域白名单
-    REGION_LIST = "河南 郑州";              // 地域列表
-    
-    
-    
-    IS_BLOCKED = 1;                         // 是否封禁攻击IP
     REFUSE_NUMBER = 3;                      // 拒绝攻击次数
     
-    
+    CLAMAV = 1;                             // clamav 是否扫描病毒(测试阶段)(1开启,非1关闭)
-    IS_MAIL = 0;                            // 开启邮件告警
+    CLAMAV_TIME = "* 22 21 * * *";          // clamav 扫描时间(Cron格式, 秒 分 时 天 月 周)
     
     
-    IS_DING_WEBHOOK = 0;                    // 开启叮叮告警
+    IPV4_RESTRICTION = 1;                   // 是否启用IP白名单(1开启,非1关闭)
+    IPV4_WHITE_LIST = "1.1.1.1 ";           // IP白名单(空格隔开)
+    
+    
+    REGION = 1;                             // 是否启用地域白名单(1开启,非1关闭)
+    REGION_URL = "http://opendata.baidu.com/api.php?query=%s&co=&resource_id=6006&oe=utf8";     // 获取IP地域
+    REGION_LIST = "河南 郑州";              // 地域列表(空格隔开)
+    
+    
+    IS_MAIL = 0;                            // 开启邮件告警(1开启,非1关闭)
+    
+    
+    IS_DING_WEBHOOK = 0;                    // 开启叮叮告警(1开启,非1关闭)
     PHONE = "15565979082";                  // @的人手机号
     DING_WEBHOOK = "https://oapi.dingtalk.com/robot/send?access_token=7f069c672cb878987aa6772cca336740eece4ce36bde12b51b45e9f440e0565a";        // 钉钉WEBHOOK
 
 
-    IS_QQMAIL = 0;                          // 开启QQ邮箱告警(默认使用gomail：https://git.aixiao.me/aixiao/gomail.git)
+    IS_QQMAIL = 1;                          // 开启QQ邮箱告警(默认使用gomail：https://git.aixiao.me/aixiao/gomail.git)(1开启,非1关闭)
     RECV_MAIL = "1605227279@qq.com";        // 接收者QQ
 }
 

ccronexpr.h

@@ -0,0 +1,95 @@
+/*
+ * Copyright 2015, alex at staticlibs.net
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* 
+ * File:   ccronexpr.h
+ * Author: alex
+ *
+ * Created on February 24, 2015, 9:35 AM
+ */
+
+#ifndef CCRONEXPR_H
+#define CCRONEXPR_H
+
+#if defined(__cplusplus) && !defined(CRON_COMPILE_AS_CXX)
+extern "C" {
+#endif
+
+#ifndef ANDROID
+#include <time.h>
+#else /* ANDROID */
+#include <time64.h>
+#endif /* ANDROID */
+
+#include <stdint.h> /*added for use if uint*_t data types*/
+
+/**
+ * Parsed cron expression
+ */
+typedef struct {
+    uint8_t seconds[8];
+    uint8_t minutes[8];
+    uint8_t hours[3];
+    uint8_t days_of_week[1];
+    uint8_t days_of_month[4];
+    uint8_t months[2];
+} cron_expr;
+
+/**
+ * Parses specified cron expression.
+ * 
+ * @param expression cron expression as nul-terminated string,
+ *        should be no longer that 256 bytes
+ * @param pointer to cron expression structure, it's client code responsibility
+ *        to free/destroy it afterwards
+ * @param error output error message, will be set to string literal
+ *        error message in case of error. Will be set to NULL on success.
+ *        The error message should NOT be freed by client.
+ */
+void cron_parse_expr(const char* expression, cron_expr* target, const char** error);
+
+/**
+ * Uses the specified expression to calculate the next 'fire' date after
+ * the specified date. All dates are processed as UTC (GMT) dates 
+ * without timezones information. To use local dates (current system timezone) 
+ * instead of GMT compile with '-DCRON_USE_LOCAL_TIME'
+ * 
+ * @param expr parsed cron expression to use in next date calculation
+ * @param date start date to start calculation from
+ * @return next 'fire' date in case of success, '((time_t) -1)' in case of error.
+ */
+time_t cron_next(cron_expr* expr, time_t date);
+
+/**
+ * Uses the specified expression to calculate the previous 'fire' date after
+ * the specified date. All dates are processed as UTC (GMT) dates 
+ * without timezones information. To use local dates (current system timezone) 
+ * instead of GMT compile with '-DCRON_USE_LOCAL_TIME'
+ * 
+ * @param expr parsed cron expression to use in previous date calculation
+ * @param date start date to start calculation from
+ * @return previous 'fire' date in case of success, '((time_t) -1)' in case of error.
+ */
+time_t cron_prev(cron_expr* expr, time_t date);
+
+
+#if defined(__cplusplus) && !defined(CRON_COMPILE_AS_CXX)
+} /* extern "C"*/
+#endif
+
+#endif /* CCRONEXPR_H */
+
+

conf.c

@@ -157,23 +157,27 @@ static void parse_global_module(char *content, conf * conf)
                 return;
         }
         
+        // IP白名单
         if (strcasecmp(var, "IPV4_RESTRICTION") == 0) {
             val_begin_len = val_end - val_begin;
             conf->IPV4_RESTRICTION = atoi(val_begin);
         }
-        
         if (strcasecmp(var, "IPV4_WHITE_LIST") == 0) {
             val_begin_len = val_end - val_begin;
             if (copy_new_mem(val_begin, val_begin_len, &conf->IPV4_WHITE_LIST) != 0)
                 return;
         }
         
-        
+        // 地域白名单
         if (strcasecmp(var, "REGION") == 0) {
             val_begin_len = val_end - val_begin;
             conf->REGION = atoi(val_begin);
         }
-        
+        if (strcasecmp(var, "REGION_URL") == 0) {
+            val_begin_len = val_end - val_begin;
+            if (copy_new_mem(val_begin, val_begin_len, &conf->REGION_URL) != 0)
+                return;
+        }
         if (strcasecmp(var, "REGION_LIST") == 0) {
             val_begin_len = val_end - val_begin;
             if (copy_new_mem(val_begin, val_begin_len, &conf->REGION_LIST) != 0)
@@ -184,7 +188,6 @@ static void parse_global_module(char *content, conf * conf)
             val_begin_len = val_end - val_begin;
             conf->CLAMAV = atoi(val_begin);
         }
-        
         if (strcasecmp(var, "CLAMAV_TIME") == 0) {
             val_begin_len = val_end - val_begin;
             conf->CLAMAV_TIME_LEN = val_begin_len;
@@ -272,6 +275,12 @@ void free_conf(conf * conf)
     
     if (conf->REGION_LIST)
         free(conf->REGION_LIST);
+    if (conf->REGION_URL)
+        free(conf->REGION_URL);
+    
+    if (conf->CLAMAV_TIME)
+        free(conf->CLAMAV_TIME);
+    
     
     return;
 }

conf.h

@@ -26,6 +26,7 @@ typedef struct CONF {
     
     // 地域白名单
     int REGION;
+    char *REGION_URL;
     char *REGION_LIST;
 
     // IPV4 白名单

rhost.c

@@ -4,6 +4,8 @@
 #include "libclamav.h"
 #include "clamscan.h"
 
+#include "ccronexpr.h"
+
 // 存储公网IP
 char *public_ip;
 
@@ -373,7 +375,9 @@ int rule(conf * conf)
 
             char URL[BUFFER + 70];
             memset(URL, 0, BUFFER + 70);
-            sprintf(URL, "http://opendata.baidu.com/api.php?query=%s&co=&resource_id=6006&oe=utf8", buffer);
+            //sprintf(URL, "http://opendata.baidu.com/api.php?query=%s&co=&resource_id=6006&oe=utf8", buffer);
+            sprintf(URL, conf->REGION_URL, buffer);
+            printf("%s\n", URL);
 
             location_json = GET_PUBLIC_IP(URL);
             if (NULL == location_json) {
@@ -490,6 +494,25 @@ int process_argv(int argc, char *argv[], char **argvs)
     return 0;
 }
 
+int _crontab(struct tm **calnext, char *string)
+{
+
+    const char *err = NULL;
+    time_t cur;
+    time_t datenext;
+    
+    
+    time(&cur);
+    cron_expr parsed;
+    cron_parse_expr(string, &parsed, &err);
+    datenext = cron_next(&parsed, cur);
+    *calnext = localtime(&datenext);
+    assert(*calnext);
+    
+    return 0;
+
+}
+
 int main(int argc, char *argv[], char **env)
 {
     signal(SIGCHLD, sig_child); // 创建捕捉子进程退出信号
@@ -500,10 +523,6 @@ int main(int argc, char *argv[], char **env)
     head_argvs = &(argvs[0]);   // head_argvs指向argvs[0]
     int head_argc = argc - 1;   // 改变argc数
 
-    time_t time_ptr;
-    struct tm *tm_ptr;
-
-    char tm_cache[BUFFER];
     char path[BUFFER] = { 0 };
     char executable_filename[BUFFER] = { 0 };
     (void)get_executable_path(path, executable_filename, sizeof(path));
@@ -514,11 +533,13 @@ int main(int argc, char *argv[], char **env)
     read_conf(path, conf);
     //ptintf_conf(conf);
 
+    now_next_time *t = (now_next_time *)malloc(sizeof(struct now_next_time));
+    memset(t, 0, sizeof(struct now_next_time));
+
     // 获取公网IP
     public_ip = GET_PUBLIC_IP(conf->PUBLIC_IP);
     //printf("%s", public_ip);
 
-    time(&time_ptr);
 
     if (0 == strcmp(conf->DAEMON, "on")) {
         goto goto_daemon;
@@ -534,52 +555,77 @@ goto_daemon:
         }
 
         while (1) {
-            // 获取当前时间
+            // Cron          
-            time(&time_ptr);
+            struct tm *calnext; //取得Cron规则时间
-            tm_ptr = localtime(&time_ptr);
+            calnext = (struct tm *)malloc(sizeof(struct tm));
-            memset(tm_cache, 0, BUFFER);
+            memset(calnext, 0, sizeof(struct tm));
-            sprintf(tm_cache, "%d%d", tm_ptr->tm_hour, tm_ptr->tm_min);
+            _crontab(&calnext, conf->CLAMAV_TIME);
+            t->next_year = 1900 + calnext->tm_year;
+            t->next_mon = 1 + calnext->tm_mon;
+            t->next_day = calnext->tm_mday;
+            t->next_hour = calnext->tm_hour;
+            t->next_min = calnext->tm_min;
+            t->next_sec = calnext->tm_sec;
+
+            
+            // 取得现在时间
+            time_t timep;
+            struct tm *p;
+            time(&timep);
+            p = localtime(&timep);
+            t->now_year = 1900 + p->tm_year;
+            t->now_mon = 1 + p->tm_mon;
+            t->now_day = p->tm_mday;
+            t->now_hour = p->tm_hour;
+            t->now_min = p->tm_min;
+            t->now_sec = p->tm_sec;
             
-            if (conf->CLAMAV_TIME_LEN >= 4)
-            {
-                ;
-            }
             
             // Clamav call
-            if (conf->CLAMAV == 1)
+            if (1 == conf->CLAMAV)
             {
-                if (0 == strcmp(tm_cache, conf->CLAMAV_TIME)) {
+                if ( t->now_year == t->next_year && t->now_mon == t->next_mon && t->now_day == t->next_day && t->now_hour == t->next_hour && t->now_min == t->next_min )
+                {
+                    //printf("%d%d%d %d:%d:%d\n", t->now_year, t->now_mon, t->now_day, t->now_hour, t->now_min, t->now_sec);
+                    //printf("%d%d%d %d:%d:%d\n", t->next_year, t->next_mon, t->next_day, t->next_hour, t->next_min, t->next_sec);
+                    
                     pid_t pid;
                     pid = fork();
                     if (pid < 0) {
                         printf("fork error.\n");
                         return -1;
-                    } else if (pid == 0) {
+                    } else if (pid == 0) {          // child process
 
                         int r = 0;
                         r = _clamscan(head_argc, head_argvs);
+                        /*
+                        if(t != NULL)
+                            free(t);
+                        */
                         _exit(r);
                     } else {
                         int status = 0;
                         wait(&status); //wait the end of child process
                         if (WIFEXITED(status)) {
                             ;
-                            //printf("子进程返回 %d\n", WEXITSTATUS(status));
+                            //printf("child process return %d\n", WEXITSTATUS(status));
                         }
-                        //printf("这是父进程.\n");
+                        
                         sleep(60);              // 跳过这一分钟
                     }
                 }
             }
             
+            
+
             rule(conf);
             sleep(conf->TIME);
         }
     } else {
         rule(conf);
-        //_clamscan(argc, argv);
     }
 
+    free(t);
     free_conf(conf);
     free(conf);
     free(public_ip);

rhost.conf

@@ -1,34 +1,35 @@
 global {
-    DAEMON = "off";                         // on开启后台运行，off不开启
-    TIME = "10";                            // 睡眠时间
 
-    CLAMAV = 1;                             // clamav 是否扫描病毒
+    DAEMON = "off";                         // on开启后台运行,off不开启
-    CLAMAV_TIME = "1726";                   // clamav 扫描时间（小时分钟，默认每天运行）
+    TIME = "10";                            // 睡眠时间(大于等于1,单位秒)
     
     PUBLIC_IP = "http://inet-ip.info";      // 获取公网IP
     
     
-    IPV4_RESTRICTION = 1;                   // 是否启用IP白名单
+    IS_BLOCKED = 1;                         // 是否封禁攻击IP(1开启,非1关闭)
-    IPV4_WHITE_LIST = "1.1.1.1 ";           // IP白名单
-    
-    
-    REGION = 1;                             // 是否启用地域白名单
-    REGION_LIST = "河南 郑州";              // 地域列表
-    
-    
-    
-    IS_BLOCKED = 1;                         // 是否封禁攻击IP
     REFUSE_NUMBER = 3;                      // 拒绝攻击次数
     
-    
+    CLAMAV = 1;                             // clamav 是否扫描病毒(测试阶段)(1开启,非1关闭)
-    IS_MAIL = 0;                            // 开启邮件告警
+    CLAMAV_TIME = "* 22 21 * * *";          // clamav 扫描时间(Cron格式, 秒 分 时 天 月 周)
     
     
-    IS_DING_WEBHOOK = 0;                    // 开启叮叮告警
+    IPV4_RESTRICTION = 1;                   // 是否启用IP白名单(1开启,非1关闭)
+    IPV4_WHITE_LIST = "1.1.1.1 ";           // IP白名单(空格隔开)
+    
+    
+    REGION = 1;                             // 是否启用地域白名单(1开启,非1关闭)
+    REGION_URL = "http://opendata.baidu.com/api.php?query=%s&co=&resource_id=6006&oe=utf8";     // 获取IP地域
+    REGION_LIST = "河南 郑州";              // 地域列表(空格隔开)
+    
+    
+    IS_MAIL = 0;                            // 开启邮件告警(1开启,非1关闭)
+    
+    
+    IS_DING_WEBHOOK = 0;                    // 开启叮叮告警(1开启,非1关闭)
     PHONE = "15565979082";                  // @的人手机号
     DING_WEBHOOK = "https://oapi.dingtalk.com/robot/send?access_token=7f069c672cb878987aa6772cca336740eece4ce36bde12b51b45e9f440e0565a";        // 钉钉WEBHOOK
 
 
-    IS_QQMAIL = 0;                          // 开启QQ邮箱告警(默认使用gomail：https://git.aixiao.me/aixiao/gomail.git)
+    IS_QQMAIL = 1;                          // 开启QQ邮箱告警(默认使用gomail：https://git.aixiao.me/aixiao/gomail.git)(1开启,非1关闭)
     RECV_MAIL = "1605227279@qq.com";        // 接收者QQ
 }

rhost.h

@@ -15,6 +15,72 @@
 #include <time.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <assert.h>
+
+
+typedef struct now_next_time {
+    int now_year;
+    int now_mon;
+    int now_day;
+    int now_hour;
+    int now_min;
+    int now_sec;
+    int now_week;
+    
+    int next_year;
+    int next_mon;
+    int next_day;
+    int next_hour;
+    int next_min;
+    int next_sec;
+    int next_week;
+} now_next_time;
+
+
+
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+
+#include "ccronexpr.h"
+
+#define MAX_SECONDS 60
+#define CRON_MAX_MINUTES 60
+#define CRON_MAX_HOURS 24
+#define CRON_MAX_DAYS_OF_WEEK 8
+#define CRON_MAX_DAYS_OF_MONTH 32
+#define CRON_MAX_MONTHS 12
+
+#define INVALID_INSTANT ((time_t) -1)
+
+#define DATE_FORMAT "%Y-%m-%d_%H:%M:%S"
+
+#ifndef ARRAY_LEN
+#define ARRAY_LEN(x) sizeof(x)/sizeof(x[0])
+#endif
+
+#ifdef CRON_TEST_MALLOC
+static int cronAllocations = 0;
+static int cronTotalAllocations = 0;
+static int maxAlloc = 0;
+void* cron_malloc(size_t n) {
+    cronAllocations++;
+    cronTotalAllocations++;
+    if (cronAllocations > maxAlloc) {
+        maxAlloc = cronAllocations;
+    }
+    return malloc(n);
+}
+
+void cron_free(void* p) {
+    cronAllocations--;
+    free(p);
+}
+#endif
+
+
 
 #define CENTOS_SYSTEM 1
 #define DEBISN_SYSTEM 2