1 files changed, 71 insertions, 0 deletions

diff --git a/debian/openssh-server.config b/debian/openssh-server.config
new file mode 100644
index 000000000..2a01aa806
--- /dev/null
+++ b/debian/openssh-server.config
@@ -0,0 +1,71 @@
+#!/bin/sh 
+
+action=$1
+version=$2
+
+# Source debconf library.
+. /usr/share/debconf/confmodule
+db_version 2.0
+
+
+get_config_option() {
+        option="$1"
+
+        [ -f /etc/ssh/sshd_config ] || return
+
+        # TODO: actually only one '=' allowed after option
+        perl -ne 'print if s/^[[:space:]]*'"$option"'[[:space:]=]+//i' \
+           /etc/ssh/sshd_config 2>/dev/null
+}
+
+
+if [ -e /etc/init.d/ssh ] && ! grep -q pidfile /etc/init.d/ssh
+then
+  db_fset ssh/use_old_init_script seen false
+  db_input medium ssh/use_old_init_script || true
+  db_go
+
+  db_get ssh/use_old_init_script
+  [ "$RET" = "false" ] && exit 0
+else
+  db_set ssh/use_old_init_script true
+  db_fset ssh/use_old_init_script seen true
+fi
+
+if [ -e /etc/ssh/sshd_config ]
+then
+    # An empty version means we're upgrading from before the package split,
+    # so check.
+    if dpkg --compare-versions "$version" lt 1:3.8.1p1-11
+    then
+        passwordauth="$(get_config_option PasswordAuthentication)"
+        crauth="$(get_config_option ChallengeResponseAuthentication)"
+        if [ "$passwordauth" = no ] && \
+           ([ -z "$crauth" ] || [ "$crauth" = yes ])
+        then
+            db_input critical ssh/disable_cr_auth || true
+        fi
+    fi
+fi 
+
+key=/etc/ssh/ssh_host_key
+export key
+if [ -n "$version" ] && [ -f $key ] && [ ! -x /usr/bin/ssh-keygen ] &&
+     dpkg --compare-versions "$version" lt 1.2.28
+then
+  # make sure that keys get updated to get rid of IDEA; preinst
+  # actually does the work, but if the old ssh-keygen is not found,
+  # it can't do that -- thus, we tell the user that he must create
+  # a new host key.
+  printf '\0\0' | 3<&0 sh -c \
+      'dd if=$key bs=1 skip=32 count=2 2>/dev/null | cmp -s - /dev/fd/3' || {
+    # this means that bytes 32&33 of the key were not both zero, in which
+    # case the key is encrypted, which we need to fix
+    db_input high ssh/encrypted_host_key_but_no_keygen || true
+  }
+fi
+
+
+db_go
+
+exit 0