Add DebianBanner server configuration option

Setting this to "no" causes sshd to omit the Debian revision from its
initial protocol handshake, for those scared by package-versioning.patch.

Bug-Debian: http://bugs.debian.org/562048
Forwarded: not-needed
Last-Update: 2013-09-14

Patch-Name: debian-banner.patch

1 files changed, 9 insertions, 0 deletions

diff --git a/servconf.c b/servconf.c
index 65f71ade8..63ff4ffbc 100644
--- a/servconf.c
+++ b/servconf.c
@@ -157,6 +157,7 @@ initialize_server_options(ServerOptions *options)
         options->ip_qos_interactive = -1;
         options->ip_qos_bulk = -1;
         options->version_addendum = NULL;
+        options->debian_banner = -1;
 }
 
 void
@@ -312,6 +313,8 @@ fill_default_server_options(ServerOptions *options)
                 options->ip_qos_bulk = IPTOS_THROUGHPUT;
         if (options->version_addendum == NULL)
                 options->version_addendum = xstrdup("");
+        if (options->debian_banner == -1)
+                options->debian_banner = 1;
         /* Turn privilege separation on by default */
         if (use_privsep == -1)
                 use_privsep = PRIVSEP_NOSANDBOX;
@@ -362,6 +365,7 @@ typedef enum {
         sKexAlgorithms, sIPQoS, sVersionAddendum,
         sAuthorizedKeysCommand, sAuthorizedKeysCommandUser,
         sAuthenticationMethods, sHostKeyAgent,
+        sDebianBanner,
         sDeprecated, sUnsupported
 } ServerOpCodes;
 
@@ -504,6 +508,7 @@ static struct {
         { "authorizedkeyscommanduser", sAuthorizedKeysCommandUser, SSHCFG_ALL },
         { "versionaddendum", sVersionAddendum, SSHCFG_GLOBAL },
         { "authenticationmethods", sAuthenticationMethods, SSHCFG_ALL },
+        { "debianbanner", sDebianBanner, SSHCFG_GLOBAL },
         { NULL, sBadOption, 0 }
 };
 
@@ -1666,6 +1671,10 @@ process_server_config_line(ServerOptions *options, char *line,
                 }
                 return 0;
 
+        case sDebianBanner:
+                intptr = &options->debian_banner;
+                goto parse_int;
+
         case sDeprecated:
                 logit("%s line %d: Deprecated option %s",
                     filename, linenum, arg);