From 6387bed4f282c43ed1fcca715a73fabbecb0390b Mon Sep 17 00:00:00 2001
From: Vladimir Dubrovin <3proxy@3proxy.ru>
Date: Fri, 20 Dec 2024 14:38:58 +0300
Subject: [PATCH] Replace strcpy with memmove for overlapping regions

---
 src/ftp.c   | 4 ++--
 src/proxy.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/ftp.c b/src/ftp.c
index 703d78c..4d9ba04 100644
--- a/src/ftp.c
+++ b/src/ftp.c
@@ -121,7 +121,7 @@ int ftpsyst(struct clientparam *param, unsigned char *buf, unsigned len){
 	buf[3] = 0;
 	if(atoi((char *)buf)/100 != 2) return 723;
 	buf[i-2] = 0;
-	strcpy((char *)buf, (char *)buf+4);
+	memmove((char *)buf, (char *)buf+4, strlen((char *)buf+4)+1);
 	return 0;
 }
 
@@ -145,7 +145,7 @@ int ftppwd(struct clientparam *param, unsigned char *buf, unsigned len){
 		b++;
 		*e = 0;
 	}
-	strcpy((char *)buf, b);
+	memmove((char *)buf, b, strlen(b)+1);
 	return 0;
 }
 
diff --git a/src/proxy.c b/src/proxy.c
index 516828b..a915db0 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -149,7 +149,7 @@ static void logurl(struct clientparam * param, char * buf, char * req, int ftp){
 	sb = strchr(buf, '\r');
 	if(sb)*sb = 0;
 	if(ftp && (se = strchr(buf + 10, ':')) && (sb = strchr(se, '@')) ) {
-		strcpy(se, sb);
+		memmove(se, sb, strlen(sb)+1);
 	}
  }
  if(param->res != 555 && param->res != 508)dolog(param, (unsigned char *)(req?buf:NULL));