dropbear: add option to disable reverse DNS lookups

Add option to disable reverse DNS lookups on client connection, as
connections otherwise stall until DNS times out in configurations without
working reverse DNS.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

diff --git a/CHANGES b/CHANGES
index 03bc5f4f41dcea1edc7e5fab04301257b4700d98..394bb5ff2e6dd4170efc7cf81ea31c9511d3360a 100644 (file)
--- a/CHANGES
+++ b/CHANGES
@@ -5,7 +5,7 @@
        Kconfig infrastructure rebased against 2.6.36-rc1, bringing
        misc fixes + nconfig and savedefconfig targets.
 
-       Updated/fixed packages: busybox
+       Updated/fixed packages: busybox, dropbear
 
 2010.08: Released August 31th, 2010:
 

diff --git a/package/dropbear/Config.in b/package/dropbear/Config.in
index 20469f8b241fc8b5fb5ba76d286fdfe94ca17ab8..e47ba454570f20e98fe3d56fbb546d02dfbc9a35 100644 (file)
--- a/package/dropbear/Config.in
+++ b/package/dropbear/Config.in
@@ -5,3 +5,11 @@ config BR2_PACKAGE_DROPBEAR
          A small SSH 2 server designed for small memory environments.
 
          http://matt.ucc.asn.au/dropbear/dropbear.html
+
+config BR2_PACKAGE_DROPBEAR_DISABLE_REVERSEDNS
+       bool "disable reverse DNS lookups"
+       depends on BR2_PACKAGE_DROPBEAR
+       help
+         Disable reverse DNS lookups on connection. This can be handy
+         on systems without working DNS, as connections otherwise
+         stall until DNS times out.

diff --git a/package/dropbear/dropbear.mk b/package/dropbear/dropbear.mk
index c73525b04d747b8cbfb4a8cee996df1806c8398b..ec678d7e95a5446dc72893008af87dde2794d087 100644 (file)
--- a/package/dropbear/dropbear.mk
+++ b/package/dropbear/dropbear.mk
@@ -21,6 +21,10 @@ $(eval $(call AUTOTARGETS,package,dropbear))
 
 $(DROPBEAR_HOOK_POST_EXTRACT):
        $(SED) 's,^#define XAUTH_COMMAND.*/xauth,#define XAUTH_COMMAND "/usr/bin/xauth,g' $(DROPBEAR_DIR)/options.h
+ifeq ($(BR2_PACKAGE_DROPBEAR_DISABLE_REVERSEDNS),y)
+       $(SED) 's,^#define DO_HOST_LOOKUP.*,/* #define DO_HOST_LOOKUP */,' \
+               $(DROPBEAR_DIR)/options.h
+endif
        touch $@
 
 $(DROPBEAR_TARGET_INSTALL_TARGET):