import lftp-4.8.4-2.el8

SOURCES/lftp-4.8.4-ssh-prompt.patch

@@ -0,0 +1,59 @@
+From 0ad0732b8fbacd3519b4e3ecf8c394681b314672 Mon Sep 17 00:00:00 2001
+From: "Alexander V. Lukyanov" <lavv17f@gmail.com>
+Date: Thu, 5 Dec 2019 21:34:11 +0300
+Subject: [PATCH] SSH_Access: fixed yes/no/[fingerprint] recognition (fix #547,
+ fix #525)
+
+---
+ src/SSH_Access.cc | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/src/SSH_Access.cc b/src/SSH_Access.cc
+index 97683a3f..adf0c196 100644
+--- a/src/SSH_Access.cc
++++ b/src/SSH_Access.cc
+@@ -20,6 +20,8 @@
+ #include <config.h>
+ #include "SSH_Access.h"
+ #include "misc.h"
++#include <algorithm>
++#include "ascii_ctype.h"
+ 
+ void SSH_Access::MakePtyBuffers()
+ {
+@@ -70,6 +70,26 @@ static bool IsPasswordPrompt(const char *b,const char *e)
+    return (e-b>=len && !strncasecmp(b,suffix,len));
+ }
+ 
++struct nocase_eq
++{
++   inline bool operator() (char lhs, char rhs) const
++   {
++      return c_tolower(lhs) == c_tolower(rhs);
++   };
++};
++
++static bool contains(char const *begin, char const *end, char const *needle)
++{
++   return std::search(begin, end, needle, needle+strlen(needle), nocase_eq()) != end;
++}
++
++static bool IsConfirmPrompt(const char *b,const char *e)
++{
++   if(b==e)
++      return false;
++   return e[-1]=='?' && contains(b,e,"yes/no");
++}
++
+ int SSH_Access::HandleSSHMessage()
+ {
+    int m=STALL;
+@@ -99,7 +106,7 @@ int SSH_Access::HandleSSHMessage()
+ 	 password_sent++;
+ 	 return m;
+       }
+-      if(ends_with(b,b+s,"(yes/no)?"))
++      if(IsConfirmPrompt(b,b+s))
+       {
+ 	 const char *answer=QueryBool("auto-confirm",hostname)?"yes\n":"no\n";
+ 	 pty_recv_buf->Put(answer);

SPECS/lftp.spec

@@ -1,7 +1,7 @@
 Summary:	A sophisticated file transfer program
 Name:		lftp
 Version:	4.8.4
-Release:	1%{?dist}
+Release:	2%{?dist}
 License:	GPLv3+
 Group:		Applications/Internet
 Source0:	http://lftp.yar.ru/ftp/%{name}-%{version}.tar.xz
@@ -12,6 +12,7 @@ BuildRequires:	zlib-devel
 BuildRequires: desktop-file-utils
 
 Patch1:  lftp-4.0.9-date_fmt.patch
+Patch2:  lftp-4.8.4-ssh-prompt.patch
 
 %description
 LFTP is a sophisticated ftp/http file transfer program. Like bash, it has job
@@ -32,6 +33,7 @@ Utility scripts for use with lftp.
 %setup -q
 
 %patch1 -p1 -b .date_fmt
+%patch2 -p1 -b .ssh-prompt
 
 #sed -i.rpath -e '/lftp_cv_openssl/s|-R.*lib||' configure
 sed -i.norpath -e \
@@ -101,6 +103,9 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
+* Tue Apr 28 2020 Michal Ruprich <michalruprich@gmail.com> - 4.8.4-2
+- Resolves: #1793557 - SFTP over LFTP hangs if host key of the remote system doesn't exist
+
 * Wed Aug 01 2018 Michal Ruprich <mruprich@redhat.com> - 4.8.4-1
 - New version 4.8.4