--- lbbs/src/screen.c	2025/05/31 03:37:47	1.85
+++ lbbs/src/screen.c	2025/06/05 11:48:35	1.88
@@ -438,10 +438,16 @@ int display_data(const void *p_data, lon
 		len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
 		if (len >= LINE_BUFFER_LEN)
 		{
-			log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
+			log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
 					  len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
 			len = LINE_BUFFER_LEN - 1;
 		}
+		else if (len < 0)
+		{
+			log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n",
+					  len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
+			len = 0;
+		}
 
 		memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
 		buffer[len] = '\0';
@@ -463,8 +469,8 @@ static int display_file_key_handler(int
 	{
 	case 0: // Set msg
 		snprintf(p_ctx->msg, sizeof(p_ctx->msg),
-				 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] │ "
-				 "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] │ "
+				 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
+				 "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
 				 "帮助[\033[32mh\033[33m] |");
 		break;
 	}
@@ -541,6 +547,7 @@ int show_bottom(const char *msg)
 	int msg_len;
 	int len;
 	int len_username;
+	char str_tm_online[LINE_BUFFER_LEN];
 
 	get_time_str(str_time, sizeof(str_time));
 
@@ -558,13 +565,23 @@ int show_bottom(const char *msg)
 
 	time_online = time(0) - BBS_login_tm;
 	tm_online = gmtime(&time_online);
+	if (tm_online->tm_mday > 1)
+	{
+		snprintf(str_tm_online, sizeof(str_tm_online),
+				"\033[36m%2d\033[33m天\033[36m%2d\033[33m时",
+				tm_online->tm_mday - 1, tm_online->tm_hour);
+	}
+	else
+	{
+		snprintf(str_tm_online, sizeof(str_tm_online),
+				"\033[36m%2d\033[33m时\033[36m%2d\033[33m分",
+				tm_online->tm_hour, tm_online->tm_min);
+	}
 
 	moveto(SCREEN_ROWS, 0);
 	clrtoeol();
-	prints("\033[1;44;33m时间[\033[36m%s\033[33m]%s%*s \033[33m帐号[\033[36m%s\033[33m]"
-		   "[\033[36m%1d\033[33m天\033[36m%2d\033[33m时\033[36m%2d\033[33m分]\033[m",
-		   str_time, msg_f, 35 - msg_len - len_username, "", BBS_username,
-		   tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min);
+	prints("\033[1;44;33m时间[\033[36m%s\033[33m]%s%*s \033[33m帐号[\033[36m%s\033[33m][%s\033[33m]\033[m",
+		   str_time, msg_f, 38 - msg_len - len_username, "", BBS_username, str_tm_online);
 
 	return 0;
 }