gnu: lftp: Don't save unknown SSH host fingerprints to known_hosts by default.
* gnu/packages/patches/lftp-dont-save-unknown-host-fingerprint.patch: New file. * gnu-system.am (dist_patch_DATA): Add it. * gnu/packages/ftp.scm (lftp): Add patch.
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Mark H Weaver
parent
b3886e0c53
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87d7928294
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@ -442,6 +442,7 @@ dist_patch_DATA = \
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gnu/packages/patches/irrlicht-mesa-10.patch \
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gnu/packages/patches/jbig2dec-ignore-testtest.patch \
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gnu/packages/patches/kmod-module-directory.patch \
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gnu/packages/patches/lftp-dont-save-unknown-host-fingerprint.patch \
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gnu/packages/patches/libarchive-CVE-2013-0211.patch \
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gnu/packages/patches/libarchive-fix-lzo-test-case.patch \
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gnu/packages/patches/libarchive-mtree-filename-length-fix.patch \
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@ -1,6 +1,7 @@
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2015 Andreas Enge <andreas@enge.fr>
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;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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@ -39,7 +40,10 @@
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version ".tar.xz"))
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(sha256
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(base32
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"1grmp8zg7cjgjinz66mrh53whigkqzl90nlxj05hapnhk3ns3vni"))))
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"1grmp8zg7cjgjinz66mrh53whigkqzl90nlxj05hapnhk3ns3vni"))
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(patches
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(list (search-patch
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"lftp-dont-save-unknown-host-fingerprint.patch")))))
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(build-system gnu-build-system)
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(native-inputs
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`(("pkg-config" ,pkg-config)))
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@ -0,0 +1,81 @@
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Fixes "saves unknown host's fingerprint in known_hosts without any prompt".
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See:
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https://github.com/lavv17/lftp/issues/116
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https://bugs.debian.org/774769
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From bc7b476e782d77839765f56bbdb4cee9f36b54ec Mon Sep 17 00:00:00 2001
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From: "Alexander V. Lukyanov" <lavv17f@gmail.com>
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Date: Tue, 13 Jan 2015 15:33:54 +0300
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Subject: [PATCH] add settings fish:auto-confirm and sftp:auto-confirm
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New host keys are now not confirmed by default, this should improve security.
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Suggested by Marcin Szewczyk <Marcin.Szewczyk@wodny.org>
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---
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doc/lftp.1 | 8 ++++++++
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src/SSH_Access.cc | 5 +++--
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src/resource.cc | 2 ++
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3 files changed, 13 insertions(+), 2 deletions(-)
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diff --git a/doc/lftp.1 b/doc/lftp.1
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index cabc1be..ed6c388 100644
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--- a/doc/lftp.1
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+++ b/doc/lftp.1
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@@ -1384,6 +1384,10 @@ address family in dns:order.
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.BR file:charset \ (string)
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local character set. It is set from current locale initially.
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.TP
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+.BR fish:auto-confirm \ (boolean)
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+when true, lftp answers ``yes'' to all ssh questions, in particular to the
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+question about a new host key. Otherwise it answers ``no''.
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+.TP
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.BR fish:charset \ (string)
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the character set used by fish server in requests, replies and file listings.
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Default is empty which means the same as local.
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@@ -1952,6 +1956,10 @@ minimal chunk size to split the file to.
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save pget transfer status this often. Set to `never' to disable saving of the status file.
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The status is saved to a file with suffix \fI.lftp-pget-status\fP.
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.TP
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+.BR sftp:auto-confirm \ (boolean)
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+when true, lftp answers ``yes'' to all ssh questions, in particular to the
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+question about a new host key. Otherwise it answers ``no''.
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+.TP
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.BR sftp:charset \ (string)
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the character set used by SFTP server in file names and file listings.
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Default is empty which means the same as local. This setting is only used
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diff --git a/src/SSH_Access.cc b/src/SSH_Access.cc
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index 706fc6a..17c716d 100644
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--- a/src/SSH_Access.cc
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+++ b/src/SSH_Access.cc
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@@ -72,8 +72,9 @@ int SSH_Access::HandleSSHMessage()
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}
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if(s>=y_len && !strncasecmp(b+s-y_len,y,y_len))
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{
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- pty_recv_buf->Put("yes\n");
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- pty_send_buf->Put("yes\n");
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+ const char *answer=QueryBool("auto-confirm",hostname)?"yes\n":"no\n";
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+ pty_recv_buf->Put(answer);
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+ pty_send_buf->Put(answer);
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return m;
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}
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if(!received_greeting && recv_buf->Size()>0)
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diff --git a/src/resource.cc b/src/resource.cc
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index 91b2e60..3a5e8b9 100644
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--- a/src/resource.cc
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+++ b/src/resource.cc
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@@ -339,6 +339,7 @@ static ResType lftp_vars[] = {
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{"mirror:no-empty-dirs", "no", ResMgr::BoolValidate,ResMgr::NoClosure},
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{"mirror:require-source", "no", ResMgr::BoolValidate,ResMgr::NoClosure},
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+ {"sftp:auto-confirm", "no", ResMgr::BoolValidate,0},
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{"sftp:max-packets-in-flight","16", ResMgr::UNumberValidate,0},
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{"sftp:protocol-version", "6", ResMgr::UNumberValidate,0},
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{"sftp:size-read", "32k", ResMgr::UNumberValidate,0},
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@@ -367,6 +368,7 @@ static ResType lftp_vars[] = {
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{"dns:strict-dnssec", "no", ResMgr::BoolValidate,0},
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#endif
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+ {"fish:auto-confirm", "no", ResMgr::BoolValidate,0},
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{"fish:shell", "/bin/sh",0,0},
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{"fish:connect-program", "ssh -a -x",0,0},
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{"fish:charset", "", ResMgr::CharsetValidate,0},
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