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Fix auto=ondemand connection initialization with TCP

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Resolves: RHEL-51879
Signed-off-by: Daiki Ueno <dueno@redhat.com>
This commit is contained in:
Daiki Ueno 2024-08-06 11:01:02 +09:00
parent 6040a43bc0
commit cb1ffd261f
2 changed files with 57 additions and 1 deletions
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52
libreswan-4.15-ondemand-tcp.patch Normal file
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@ -0,0 +1,52 @@
From 0b91406427cf7292d61900991fd665f076b6d43f Mon Sep 17 00:00:00 2001
From: Daiki Ueno <dueno@redhat.com>
Date: Tue, 2 Jul 2024 20:37:07 +0900
Subject: [PATCH] tcp: call kernel_ops->poke_ipsec_policy_hole before connect
This fixes ondemand initiation with TCP. Without the policy hole, a
TCP handshake will not complete, as it cannot receive SYN-ACK packet
in plaintext and thus connect blocks until timeout.
Signed-off-by: Daiki Ueno <dueno@redhat.com>
Signed-off-by: Andrew Cagney <cagney@gnu.org>
---
programs/pluto/iface_tcp.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/programs/pluto/iface_tcp.c b/programs/pluto/iface_tcp.c
index c63e8bfe4d..55fe639174 100644
--- a/programs/pluto/iface_tcp.c
+++ b/programs/pluto/iface_tcp.c
@@ -473,6 +473,15 @@ struct iface_endpoint *connect_to_tcp_endpoint(struct iface_dev *local_dev,
return NULL;
}
+ /* This needs to be called before connect, so TCP handshake
+ * (in plaintext) completes. */
+ if (kernel_ops->poke_ipsec_policy_hole != NULL &&
+ !kernel_ops->poke_ipsec_policy_hole(fd, afi, logger)) {
+ /* already logged */
+ close(fd);
+ return NULL;
+ }
+
/*
* Connect
*
@@ -551,13 +560,6 @@ struct iface_endpoint *connect_to_tcp_endpoint(struct iface_dev *local_dev,
}
}
- if (kernel_ops->poke_ipsec_policy_hole != NULL &&
- !kernel_ops->poke_ipsec_policy_hole(fd, afi, logger)) {
- /* already logged */
- close(fd);
- return NULL;
- }
-
struct iface_endpoint *ifp =
alloc_iface_endpoint(fd, local_dev, &iketcp_iface_io,
/*esp_encapsulation_enabled*/true,
--
2.45.2

6
libreswan.spec
View File

@ -31,7 +31,7 @@ Name: libreswan
Summary: Internet Key Exchange (IKEv1 and IKEv2) implementation for IPsec
# version is generated in the release script
Version: 4.15
Release: %{?prever:0.}1%{?prever:.%{prever}}%{?dist}
Release: 2
License: GPLv2
Url: https://libreswan.org/
Source0: https://download.libreswan.org/%{?prever:development/}%{name}-%{version}%{?prever}.tar.gz
@ -41,6 +41,7 @@ Source2: https://download.libreswan.org/cavs/ikev1_psk.fax.bz2
Source3: https://download.libreswan.org/cavs/ikev2.fax.bz2
%endif
Patch: libreswan-4.6-ikev1-policy-defaults-to-drop.patch
Patch: libreswan-4.15-ondemand-tcp.patch
BuildRequires: audit-libs-devel
BuildRequires: bison
@ -196,6 +197,9 @@ certutil -N -d sql:$tmpdir --empty-password
%doc %{_mandir}/*/*
%changelog
* Tue Aug 6 2024 Daiki Ueno <dueno@redhat.com> - 4.15-2
- Fix auto=ondemand connection initialization with TCP (RHEL-51879)
* Tue Jul 30 2024 Daiki Ueno <dueno@redhat.com> - 4.15-1
- Update to 4.15 (RHEL-50006)