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: 2014-10-07

Patch-Name: debian-banner.patch

1 files changed, 9 insertions, 0 deletions

diff --git a/servconf.c b/servconf.c
index a25248782..6c7741ab2 100644
--- a/servconf.c
+++ b/servconf.c
@@ -160,6 +160,7 @@ initialize_server_options(ServerOptions *options)
         options->ip_qos_interactive = -1;
         options->ip_qos_bulk = -1;
         options->version_addendum = NULL;
+        options->debian_banner = -1;
 }
 
 void
@@ -321,6 +322,8 @@ fill_default_server_options(ServerOptions *options)
                 options->fwd_opts.streamlocal_bind_mask = 0177;
         if (options->fwd_opts.streamlocal_bind_unlink == -1)
                 options->fwd_opts.streamlocal_bind_unlink = 0;
+        if (options->debian_banner == -1)
+                options->debian_banner = 1;
         /* Turn privilege separation on by default */
         if (use_privsep == -1)
                 use_privsep = PRIVSEP_NOSANDBOX;
@@ -373,6 +376,7 @@ typedef enum {
         sAuthenticationMethods, sHostKeyAgent, sPermitUserRC,
         sStreamLocalBindMask, sStreamLocalBindUnlink,
         sAllowStreamLocalForwarding,
+        sDebianBanner,
         sDeprecated, sUnsupported
 } ServerOpCodes;
 
@@ -514,6 +518,7 @@ static struct {
         { "streamlocalbindmask", sStreamLocalBindMask, SSHCFG_ALL },
         { "streamlocalbindunlink", sStreamLocalBindUnlink, SSHCFG_ALL },
         { "allowstreamlocalforwarding", sAllowStreamLocalForwarding, SSHCFG_ALL },
+        { "debianbanner", sDebianBanner, SSHCFG_GLOBAL },
         { NULL, sBadOption, 0 }
 };
 
@@ -1697,6 +1702,10 @@ process_server_config_line(ServerOptions *options, char *line,
                 intptr = &options->fwd_opts.streamlocal_bind_unlink;
                 goto parse_flag;
 
+        case sDebianBanner:
+                intptr = &options->debian_banner;
+                goto parse_int;
+
         case sDeprecated:
                 logit("%s line %d: Deprecated option %s",
                     filename, linenum, arg);