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Update dropbear to the new version.

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Add a config option to handle low entropy system.
This commit is contained in:
Eric Andersen 2005-03-09 08:30:47 +00:00
parent 8cc0443740
commit 4c22057788
2 changed files with 20 additions and 2 deletions
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14
package/dropbear_sshd/Config.in
View File

@ -5,3 +5,17 @@ config BR2_PACKAGE_DROPBEAR_SSHD
A small SSH 2 server designed for small memory environments. A small SSH 2 server designed for small memory environments.
http://matt.ucc.asn.au/dropbear/ http://matt.ucc.asn.au/dropbear/
config BR2_PACKAGE_DROPBEAR_SSHD_URANDOM
bool " Use /dev/urandom (low entropy systems only)?"
default n
depends on BR2_PACKAGE_DROPBEAR_SSHD
help
By default, dropbear uses the much more secure /dev/random. If you
are using a system lacking usable entropy sources, this could cause
the dropbear ssh daemon to block forever waiting for entropy that
will never arrive. By making dropbear use /dev/urandom, you can
prevent Dropbear from blocking while waiting on the random device.
This could however significantly reduce the security of your ssh
connections. Make sure you know what you are doing if you enable
this option -- most people should answer N.

8
package/dropbear_sshd/dropbear_sshd.mk
View File

@ -3,9 +3,9 @@
# dropbear_sshd # dropbear_sshd
# #
############################################################# #############################################################
DROPBEAR_SSHD_SOURCE:=dropbear-0.44.tar.bz2 DROPBEAR_SSHD_SOURCE:=dropbear-0.45.tar.bz2
DROPBEAR_SSHD_SITE:=http://matt.ucc.asn.au/dropbear/releases/ DROPBEAR_SSHD_SITE:=http://matt.ucc.asn.au/dropbear/releases/
DROPBEAR_SSHD_DIR:=$(BUILD_DIR)/dropbear-0.44 DROPBEAR_SSHD_DIR:=$(BUILD_DIR)/dropbear-0.45
DROPBEAR_SSHD_CAT:=bzcat DROPBEAR_SSHD_CAT:=bzcat
DROPBEAR_SSHD_BINARY:=dropbearmulti DROPBEAR_SSHD_BINARY:=dropbearmulti
DROPBEAR_SSHD_TARGET_BINARY:=usr/sbin/dropbear DROPBEAR_SSHD_TARGET_BINARY:=usr/sbin/dropbear
@ -44,6 +44,10 @@ $(DROPBEAR_SSHD_DIR)/.configured: $(DROPBEAR_SSHD_DIR)/.unpacked
$(DISABLE_NLS) \ $(DISABLE_NLS) \
--with-shared \ --with-shared \
); );
ifeq ($(strip $(BR2_PACKAGE_DROPBEAR_SSHD_URANDOM)),y)
$(SED) 's,^#define DROPBEAR_RANDOM_DEV.*,#define DROPBEAR_RANDOM_DEV \"/dev/urandom\",' \
$(DROPBEAR_SSHD_DIR)/options.h
endif
touch $(DROPBEAR_SSHD_DIR)/.configured touch $(DROPBEAR_SSHD_DIR)/.configured
$(DROPBEAR_SSHD_DIR)/$(DROPBEAR_SSHD_BINARY): $(DROPBEAR_SSHD_DIR)/.configured $(DROPBEAR_SSHD_DIR)/$(DROPBEAR_SSHD_BINARY): $(DROPBEAR_SSHD_DIR)/.configured