1 files changed, 124 insertions, 0 deletions

diff --git a/debian/patches/keepalive-extensions.patch b/debian/patches/keepalive-extensions.patch
new file mode 100644
index 000000000..98e9f8bdd
--- /dev/null
+++ b/debian/patches/keepalive-extensions.patch
@@ -0,0 +1,124 @@
+Description: Various keepalive extensions
+ Add compatibility aliases for ProtocolKeepAlives and SetupTimeOut,
+ supported in previous versions of Debian's OpenSSH package but since
+ superseded by ServerAliveInterval.  (We're probably stuck with this bit for
+ compatibility.)
+ .
+ In batch mode, default ServerAliveInterval to five minutes.
+ .
+ Adjust documentation to match and to give some more advice on use of
+ keepalives.
+Author: Richard Kettlewell <rjk@greenend.org.uk>
+Author: Ian Jackson <ian@chiark.greenend.org.uk>
+Author: Matthew Vernon <matthew@debian.org>
+Author: Colin Watson <cjwatson@debian.org>
+Last-Update: 2013-05-16
+
+Index: b/readconf.c
+===================================================================
+--- a/readconf.c
++++ b/readconf.c
+@@ -138,6 +138,7 @@
+        oTunnel, oTunnelDevice, oLocalCommand, oPermitLocalCommand,
+        oVisualHostKey, oUseRoaming, oZeroKnowledgePasswordAuthentication,
+        oKexAlgorithms, oIPQoS, oRequestTTY,
++       oProtocolKeepAlives, oSetupTimeOut,
+        oDeprecated, oUnsupported
+ } OpCodes;
+ 
+@@ -259,6 +260,8 @@
+        { "kexalgorithms", oKexAlgorithms },
+        { "ipqos", oIPQoS },
+        { "requesttty", oRequestTTY },
++       { "protocolkeepalives", oProtocolKeepAlives },
++       { "setuptimeout", oSetupTimeOut },
+ 
+        { NULL, oBadOption }
+ };
+@@ -933,6 +936,8 @@
+                goto parse_flag;
+ 
+        case oServerAliveInterval:
++       case oProtocolKeepAlives: /* Debian-specific compatibility alias */
++       case oSetupTimeOut:       /* Debian-specific compatibility alias */
+                intptr = &options->server_alive_interval;
+                goto parse_time;
+ 
+@@ -1392,8 +1397,13 @@
+                options->rekey_limit = 0;
+        if (options->verify_host_key_dns == -1)
+                options->verify_host_key_dns = 0;
+-       if (options->server_alive_interval == -1)
+-               options->server_alive_interval = 0;
++       if (options->server_alive_interval == -1) {
++               /* in batch mode, default is 5mins */
++               if (options->batch_mode == 1)
++                       options->server_alive_interval = 300;
++               else
++                       options->server_alive_interval = 0;
++       }
+        if (options->server_alive_count_max == -1)
+                options->server_alive_count_max = 3;
+        if (options->control_master == -1)
+Index: b/ssh_config.5
+===================================================================
+--- a/ssh_config.5
++++ b/ssh_config.5
+@@ -136,8 +136,12 @@
+ If set to
+ .Dq yes ,
+ passphrase/password querying will be disabled.
++In addition, the
++.Cm ServerAliveInterval
++option will be set to 300 seconds by default.
+ This option is useful in scripts and other batch jobs where no user
+-is present to supply the password.
++is present to supply the password,
++and where it is desirable to detect a broken network swiftly.
+ The argument must be
+ .Dq yes
+ or
+@@ -1113,8 +1117,15 @@
+ will send a message through the encrypted
+ channel to request a response from the server.
+ The default
+-is 0, indicating that these messages will not be sent to the server.
++is 0, indicating that these messages will not be sent to the server,
++or 300 if the
++.Cm BatchMode
++option is set.
+ This option applies to protocol version 2 only.
++.Cm ProtocolKeepAlives
++and
++.Cm SetupTimeOut
++are Debian-specific compatibility aliases for this option.
+ .It Cm StrictHostKeyChecking
+ If this flag is set to
+ .Dq yes ,
+@@ -1153,6 +1164,12 @@
+ other side.
+ If they are sent, death of the connection or crash of one
+ of the machines will be properly noticed.
++This option only uses TCP keepalives (as opposed to using ssh level
++keepalives), so takes a long time to notice when the connection dies.
++As such, you probably want
++the
++.Cm ServerAliveInterval
++option as well.
+ However, this means that
+ connections will die if the route is down temporarily, and some people
+ find it annoying.
+Index: b/sshd_config.5
+===================================================================
+--- a/sshd_config.5
++++ b/sshd_config.5
+@@ -1122,6 +1122,9 @@
+ .Pp
+ To disable TCP keepalive messages, the value should be set to
+ .Dq no .
++.Pp
++This option was formerly called
++.Cm KeepAlive .
+ .It Cm TrustedUserCAKeys
+ Specifies a file containing public keys of certificate authorities that are
+ trusted to sign user certificates for authentication.