增加帮助信息

rhost.c

@@ -781,14 +781,47 @@ int update_freshclam(int argc, char *argv[])
 }
 
 
+static char help_information(void)
+{
+    static const char name[] = "Rhost";
+    static const char subject[] = "Reject host&scan for viruses";
+    static const struct {
+        const char *email;
+    } author = {
+        "AIXIAO@AIXIAO.ME",
+    };
+
+    static const char usage[] = "Usage: [-?h] [-d]";
+    static const char *s_help[] = {
+        "",
+        "Options:",
+        "    -d                     : Background running",
+        "    -? -h --help           : help information",
+        "           The configuration file needs to be in the same directory as the executable file!",
+        "",
+        "",
+        0
+    };
+
+    fprintf(stderr, "%s %s\n", name, subject);
+    fprintf(stderr, "Author: %s\n", author.email);
+    fprintf(stderr, "%s\n", usage);
+
+    int l;
+    for (l = 0; s_help[l]; l++) {
+        fprintf(stderr, "%s\n", s_help[l]);
+    }
+
+    BUILD("Compile、link.\n");
+
+    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
     
-    // 更新病毒库
-    update_freshclam(argc, argv);
-    
 
     int pid;
     int i;
@@ -800,6 +833,15 @@ int main(int argc, char *argv[], char **env)
     (void)get_executable_path(path, executable_filename, sizeof(path));
     strcat(executable_filename, ".conf");
     strcat(path, executable_filename);
+    
+    if (NULL != argv[1]) {
+        if (0 == strcmp(argv[1], "-v") || 0 == strcmp(argv[1], "--version") || 0 == strcmp(argv[1] , "-h") || 0 == strcmp(argv[1] , "--help") || 0 == strcmp(argv[1] , "-?"))
+        {
+            help_information();
+            exit(0);
+        }
+    }
+    
     if (1 == access(path, F_OK))
     {
         printf("配置文件不存在！\n");
@@ -809,6 +851,10 @@ int main(int argc, char *argv[], char **env)
     //ptintf_conf(conf);
     
     
+    // 更新病毒库
+    update_freshclam(argc, argv);
+    
+    
     // 创建移除目录
     if (conf->CLAMAV_ARG)
     {

rhost.h

@@ -94,6 +94,7 @@ void cron_free(void* p)
 #define LONG_BUFFER 1024*1000
 #define ARGS_NUM 20
 #define WHITELIST_IP_NUM 1024
+#define BUILD(fmt...)  do { fprintf(stderr,"%s %s ",__DATE__,__TIME__); fprintf(stderr, ##fmt); } while(0)
 
 #define AWK " | awk -v num=%d '{a[$1]+=1;} END {for(i in a){if (a[i] >= num) {print i;}}}' "
 #define GE_10 "grep -E \"^$(LC_ALL=\"C\" date \"+%h\").$(LC_ALL=\"C\" date \"+%d\")\" /var/log/auth.log | grep failure | grep rhost"