From ae2c5eeeab5f445bdef20042cdf3cc8d1312a748 Mon Sep 17 00:00:00 2001
From: Adrien Destugues <pulkomandy@pulkomandy.tk>
Date: Sun, 16 Jul 2017 16:11:47 +0200
Subject: [PATCH] SerialConnect: handle cancelled file transfers.

The remote can cancel a file transfer by sending a CAN character.
Handle this by stopping the transfer and hiding the progress bar.
---
 src/apps/serialconnect/XModem.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/apps/serialconnect/XModem.cpp b/src/apps/serialconnect/XModem.cpp
index 22a4a90ea4..4184c68792 100644
--- a/src/apps/serialconnect/XModem.cpp
+++ b/src/apps/serialconnect/XModem.cpp
@@ -19,6 +19,7 @@ static const char kSOH =  1;
 static const char kEOT =  4;
 static const char kACK =  6;
 static const char kNAK = 21;
+static const char kCAN = 24;
 static const char kSUB = 26;
 
 static const int kBlockSize = 128;
@@ -91,6 +92,16 @@ XModemSender::BytesReceived(const uint8_t* data, size_t length)
 				}
 				break;
 
+			case kCAN:
+			{
+				BMessage msg(kMsgProgress);
+				msg.AddInt32("pos", 0);
+				msg.AddInt32("size", 0);
+				msg.AddString("info", "Remote cancelled transfer");
+				fListener.SendMessage(&msg);
+				return true;
+			}
+
 			default:
 				break;
 		}