From ad2d69edca473eadcff0078673fdef1626b2c8eb Mon Sep 17 00:00:00 2001
From: aixiao <aixiao@aixiao.me>
Date: Thu, 16 Jun 2022 11:42:55 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20''?=
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---
 random_password.c | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/random_password.c b/random_password.c
index 7ecbd4d..fbe9d9a 100644
--- a/random_password.c
+++ b/random_password.c
@@ -5,7 +5,7 @@
 #include <sys/time.h>
 #include <string.h>
 
-#define BUFFER_SIZ 270
+#define BUFFER_SIZ 8192
 
 
 char pool[] = {
@@ -17,18 +17,11 @@ char pool[] = {
     'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
     'Y', 'Z', '!', '@', '#', '$', '%', '^', '&', '*',
     '[', ']', '\\', '|', ';', '\'', ',', '.', '/', '{', '}', ':', '"', '<', '>', '?'
-
     
-}; //随机池
+};
 
 int main(int argc, char *argv[])
-{
-    // srand(time(0));      
-    /*
-       使用 time(0) 做种子，在一秒之内种子是不会变的
-       通过使用微妙，来增加随机数的随机性
-     */
-     
+{    
     int PASSWD_LEN  = 16;
     struct timeval tpstart;
     char password[BUFFER_SIZ];
@@ -39,11 +32,17 @@ int main(int argc, char *argv[])
     {
         PASSWD_LEN = atoi(argv[1]);
     }
+    
+    if (PASSWD_LEN >= BUFFER_SIZ)
+    {
+        printf("Password too long!\n");
+        exit(1);
+    }
+    
     memset(password, 0, BUFFER_SIZ);
     gettimeofday(&tpstart, NULL);
     srand(tpstart.tv_usec);
 
-
     while (i != PASSWD_LEN) {
         password[i++] = pool[rand() % sizeof(pool)];
     }