From 679fc0cad36124abd430d42513d882c0f5402fd2 Mon Sep 17 00:00:00 2001
From: UldisRinkevichs <top100pve@gmail.com>
Date: Mon, 9 Jul 2018 01:58:22 +0700
Subject: [PATCH] stability and compatibility improvements

---
 Source/ftpserv.c | 14 ++++++++++----
 Source/ftpserv.h |  1 +
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/Source/ftpserv.c b/Source/ftpserv.c
index 8db967a..f538154 100644
--- a/Source/ftpserv.c
+++ b/Source/ftpserv.c
@@ -381,10 +381,14 @@ void WorkerThreadCleanup(PFTPCONTEXT context)
 		 * trying to stop gracefully
 		 */
 		context->WorkerThreadAbort = 1;
+		sleep(2);
 
 		err = pthread_join(context->WorkerThreadId, &retv);
 		if ( err != 0)
+		{
+			writelogentry(context, "Enter cancel", "");
 			pthread_cancel(context->WorkerThreadId);
+		}
 
 		context->WorkerThreadValid = -1;
 	}
@@ -401,6 +405,7 @@ void WorkerThreadCleanup(PFTPCONTEXT context)
 
 	context->DataIPv4 = 0;
 	context->DataPort = 0;
+	writelogentry(context, "WorkerThreadCleanup complete", "");
 }
 
 int ftpUSER(PFTPCONTEXT context, const char *params)
@@ -952,6 +957,7 @@ int ftpABOR(PFTPCONTEXT context, const char *params)
 	if ( context->Access == FTP_ACCESS_NOT_LOGGED_IN )
 		return sendstring(context, error530);
 
+	writelogentry(context, " ABORT command", NULL);
 	WorkerThreadCleanup(context);
 	return sendstring(context, success226);
 }
@@ -1904,16 +1910,16 @@ void *ftp_client_thread(SOCKET *s)
 				break;
 
 			i = 0;
-			while (rcvbuf[i] == ' ')
-				i++;
+			while ((rcvbuf[i] != 0) && (isalpha(rcvbuf[i]) == 0))
+				++i;
 
 			cmd = &rcvbuf[i];
 			while ((rcvbuf[i] != 0) && (rcvbuf[i] != ' '))
-				i++;
+				++i;
 
 			cmdlen = &rcvbuf[i] - cmd;
 			while (rcvbuf[i] == ' ')
-				i++;
+				++i;
 
 			if (rcvbuf[i] == 0)
 				params = NULL;
diff --git a/Source/ftpserv.h b/Source/ftpserv.h
index 6dcd0f0..7d86a74 100644
--- a/Source/ftpserv.h
+++ b/Source/ftpserv.h
@@ -23,6 +23,7 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <time.h>
+#include <ctype.h>
 #include <fcntl.h>
 #include <dirent.h>
 #include <pthread.h>