From c50abbb9d7a672317dbfb5c9f7ad4146d5f1a457 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=BA=90=E6=96=87=E9=9B=A8?=
 <41315874+fumiama@users.noreply.github.com>
Date: Fri, 25 Nov 2022 12:49:04 +0800
Subject: [PATCH] fix data print

---
 server.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/server.c b/server.c
index 95d5484..697f93b 100644
--- a/server.c
+++ b/server.c
@@ -478,19 +478,25 @@ static int send_all(char* file_path, threadtimer_t *timer) {
 }
 
 static int send_data(int accept_fd, char *data, size_t length) {
+    char buf[128];
+    if(length == 0) {
+        puts("Send data error: zero length");
+        return 0;
+    }
     if(!~send(accept_fd, data, length, MSG_DONTWAIT)) {
         puts("Send data error");
         return 0;
     }
     printf("Send data: ");
     if(length > 128) {
-        data[124] = '.';
-        data[125] = '.';
-        data[126] = '.';
-        data[127] =  0;
-    }
-    if(data[length-1]) data[length-1] = 0;
-    puts(data);
+        memcpy(buf, data, 124);
+        buf[124] = '.';
+        buf[125] = '.';
+        buf[126] = '.';
+        buf[127] =  0;
+    } else memcpy(buf, data, length);
+    if(buf[length-1]) buf[length-1] = 0;
+    puts(buf);
     return 1;
 }