优化磁盘告警

.vscode/launch.json

@@ -0,0 +1,11 @@
+{
+    // 使用 IntelliSense 了解相关属性。 
+    // 悬停以查看现有属性的描述。
+    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        
+        
+
+    ]
+}

.vscode/settings.json

@@ -7,6 +7,7 @@
         "clamscan.h": "c",
         "libiptc.h": "c",
         "stdio.h": "c",
-        "nginx.h": "c"
+        "nginx.h": "c",
+        "cjson.h": "c"
     }
 }

disk.c

@@ -1,15 +1,11 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <mntent.h>
-#include <sys/statvfs.h>
+#include "disk.h"
+
 
 // 获取指定路径的磁盘使用率
 int get_disk_usage(const char *path, double *usage) {
     struct statvfs stat;
 
     if (statvfs(path, &stat) != 0) {
-        // 处理错误
         perror("statvfs failed");
         return -1;
     }
@@ -23,37 +19,100 @@ int get_disk_usage(const char *path, double *usage) {
     return 0;
 }
 
-int disk_usage() {
+
+
+// 第三方邮箱告警, 磁盘使用率
+int QQ_mail_warning_Disk_Use(const char *recv_mail, const char *local_ip, const char *text, int current_length) {
+    
+    int command_len = current_length + sizeof(QQMAIL_DISK_USE) + strlen(recv_mail) + strlen(local_ip) + 256;
+    char command[command_len];
+
+    // 生成邮件正文
+    char mail_text[command_len];
+    snprintf(mail_text, command_len, "Host:%s\n%s", local_ip, text);
+
+    // 生成命令字符串
+    snprintf(command, command_len, QQMAIL_DISK_USE, recv_mail, mail_text);
+
+    // 打印命令用于调试
+    printf("Command: %s %d\n", command, current_length);
+
+    // 执行命令
+    int ret = system(command);
+    if (ret == -1) {
+        perror("system command failed");
+        return -1;
+    }
+
+    return 0;
+}
+
+int disk_usage(conf *conf, char *local_ip, int threshold) {
     FILE *mounts;
     struct mntent *ent;
+    char *result;
+    size_t result_size = INITIAL_SIZE;
+    size_t current_length = 0;
 
+    result = (char *)malloc(result_size);
+    if (result == NULL) {
+        perror("内存分配失败");
+        return 1;
+    }
+    result[0] = '\0';  // 初始化为空字符串
+
+    // 打开挂载表
     mounts = setmntent("/etc/mtab", "r");
     if (mounts == NULL) {
-        perror("setmntent failed");
+        perror("打开挂载表失败");
+        free(result);
         return 1;
     }
 
-    while ((ent = getmntent(mounts)) != NULL)
-    {
+    // 遍历每个挂载的文件系统
+    while ((ent = getmntent(mounts)) != NULL) {
         double usage = 0;
-        if (strstr(ent->mnt_fsname, "/dev/") != NULL)
-        {
-            //printf("%s %s %s\n", ent->mnt_fsname, ent->mnt_dir, ent->mnt_type);
 
+        // 检查文件系统是否为设备
+        if (strstr(ent->mnt_fsname, "/dev/") != NULL) {
+            // 获取挂载点的磁盘使用率
             if (get_disk_usage(ent->mnt_dir, &usage) != 0) {
-                fprintf(stderr, "Failed to get disk usage for %s\n", ent->mnt_dir);
+                fprintf(stderr, "获取 %s 的磁盘使用率失败\n", ent->mnt_dir);
                 continue;
             }
 
-            int threshold = 1;
+            // 如果使用率超过阈值则拼接字符串
             if (usage > threshold) {
-                printf("挂载点: %s 使用率: %.2f%% 阀值: %d%%\n", ent->mnt_dir, usage, threshold);
+                char buffer[BUFFER_INCREMENT];
+                int len = snprintf(buffer, BUFFER_INCREMENT, "挂载点:%s 使用率:%.2f%% 阀值:%d%%\n", ent->mnt_dir, usage, threshold);
                 
+                // 检查缓冲区大小是否足够
+                if (current_length + len >= result_size) {
+                    result_size += BUFFER_INCREMENT;
+                    result = (char *)realloc(result, result_size);
+                    if (result == NULL) {
+                        perror("内存重新分配失败");
+                        endmntent(mounts);
+                        return 1;
+                    }
+                }
+                strcat(result, buffer);
+                current_length += len;
+            }
         }
     }
 
+    // 发送邮件警告
+    if (current_length > 0) {
+        if (QQ_mail_warning_Disk_Use("aixiao@aixiao.me", "127.0.0.1", result, current_length) != 0) {
+            fprintf(stderr, "发送邮件失败\n");
+        }
     }
 
+    // 清理
+    free(result);
     endmntent(mounts);
     return 0;
 }
+
+

disk.h

@@ -7,6 +7,12 @@
 #include <mntent.h>
 #include <sys/statvfs.h>
 
-extern int disk_usage();
+#include "rhost.h"
+
+
+#define INITIAL_SIZE 1024
+#define BUFFER_INCREMENT 512
+
+int disk_usage(conf *conf, char *local_ip, int threshold);
 
 #endif

rhost.c

@@ -5,6 +5,7 @@
 #include "clamscan.h"
 #include "ccronexpr.h"
 #include "nginx.h"
+#include "disk.h"
 #include "./cJSON/cJSON.h"
 #include "ip2region/ip2region.h"
 
@@ -49,7 +50,6 @@ void cron_free(void *p)
 
 
 
-
 // 自定义 printf 函数
 void my_printf(const char *format, ...) {
     va_list args;
@@ -394,29 +394,6 @@ int QQ_mail_warning_Virus_files(char *local_ip, int Virus_number, conf *conf)
     return system(command);
 }
 
-// 第三方邮箱告警, 磁盘使用率
-int QQ_mail_warning_Disk_Use(char *local_ip, int disk_use, conf *conf)
-{
-    char *command;
-    char *text;
-    char temp[32];
-
-    command = (char *)alloca(BUFFER + (sizeof(QQMAIL)) + 1);
-    text = (char *)alloca(BUFFER);
-
-    memset(command, 0, BUFFER + (sizeof(QQMAIL)) + 1);
-    memset(text, 0, BUFFER);
-    memset(temp, 0, 32);
-
-    strcpy(temp, local_ip);
-    temp[_strlen(local_ip) - 1] = '\0';
-
-    snprintf(text, BUFFER, "Host:%s, Disk usage reaches threshold!, Please handle!", temp);
-    snprintf(command, BUFFER, QQMAIL_DISK_USE, conf->RECV_MAIL, text);
-
-    return system(command);
-}
-
 // IP段白名单对比
 int whitelist(char *client_ip, char (*whitelist_ip)[WHITELIST_IP_NUM])
 {
@@ -458,34 +435,6 @@ int isregion(char *str, char (*region_list)[WHITELIST_IP_NUM])
     return 0;
 }
 
-// 磁盘使用率
-int disk_waring(int threshold)
-{
-    FILE *fp = NULL;
-    char buffer[BUFFER];
-    char command[BUFFER];
-    int is = 0;
-
-#define DF "for u in `df -mh | grep -E -e \".:.\" -e \"^/dev\" | awk '{print $5}' | sed 's|%%||g'`; do if test \"$u\" -ge %d; then echo \"$u\"; fi done"
-
-    memset(buffer, 0, BUFFER);
-    memset(command, 0, BUFFER);
-
-    snprintf(command, BUFFER, DF, threshold);
-
-    //printf("%s\n", command);
-    fp = popen(command, "r");
-
-    while (fgets(buffer, BUFFER, fp) != NULL) {
-        printf("%s", buffer);
-        is = 1;
-        break;
-    }
-    pclose(fp);
-
-    return is;
-}
-
 char *_time()
 {
     char temp[BUFFER];
@@ -1160,16 +1109,9 @@ goto_daemon:
 
                         // 磁盘告警
                         if (1 == conf->IS_DISK) {
-                            if (disk_waring(conf->DISK_USE) == 1) {
-                                printf("Disk usage reaches threshold!, Please handle!\n");
-                                if (conf->IS_QQMAIL == 1) {
-                                    QQ_mail_warning_Disk_Use(public_ip, 0, conf);
-                                    sleep(3);
-                                }
-                            } else {
-                                printf("Disk usage does not reach threshold!\n");
-                            }
+                            disk_usage(conf, public_ip, conf->DISK_USE);
                         }
+                        
                         _exit(r);
 
                     } else {

rhost.h

@@ -68,7 +68,6 @@ typedef struct now_next_time
 #define CENTOS_LE_10 "grep -E \"^$(LC_ALL=\"C\" date \"+%h\")..$(LC_ALL=\"C\" date | awk '{print $3}')\" /var/log/secure | grep failure | grep rhost"
 
 #define QQMAIL "gomail -r %s -s \"System ban IP\" -t \"%s\""
-
 #define QQMAIL_Virus "gomail -r %s -s \"System Virus Infected\" -t \"%s\""
 #define QQMAIL_DISK_USE "gomail -r %s -s \"System Disk Use\" -t \"%s\""