NetCube-Systems-Austria/kumquat-buildroot
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target: add option to set the root password

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Add an option in the menuconfig to specify a root password.

If set to empty, no root password is created; otherwise, the password is
encrypted using MD5 (MD5 is not the default for crypt(3), DES-56 is, but
MD5 is widely available, not-so-strong, but not-so-weak either).

Add a check for 'mkpasswd' as a new dependency.

[Peter: fix typo/capitilization and simplify logic]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Yann E. MORIN 2012-12-28 14:07:33 +00:00 committed by Peter Korsgaard
parent aa5d13568d
commit a45871bfc6
3 changed files with 39 additions and 0 deletions
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9
support/dependencies/dependencies.sh
View File

@ -158,6 +158,7 @@ if grep ^BR2_TOOLCHAIN_BUILDROOT=y $CONFIG_FILE > /dev/null && \
exit 1 ;
fi
fi
if grep -q ^BR2_PACKAGE_CLASSPATH=y $CONFIG_FILE ; then
for prog in javac jar; do
if ! which $prog > /dev/null ; then
@ -166,3 +167,11 @@ if grep -q ^BR2_PACKAGE_CLASSPATH=y $CONFIG_FILE ; then
fi
done
fi
if grep -E '^BR2_TARGET_GENERIC_ROOT_PASSWD=".+"$' $CONFIG_FILE > /dev/null 2>&1; then
if ! which mkpasswd > /dev/null 2>&1; then
/bin/echo -e "\nYou need the 'mkpasswd' utility to set the root password\n"
/bin/echo -e "(in Debian/ubuntu, 'mkpasswd' provided by the whois package)\n"
exit 1
fi
fi

21
system/Config.in
View File

@ -12,6 +12,27 @@ config BR2_TARGET_GENERIC_ISSUE
help
Select system banner (/etc/issue) to be displayed at login.
config BR2_TARGET_GENERIC_ROOT_PASSWD
string "Root password"
default ""
help
Set the initial root password (in clear). It will be md5-encrypted.
If set to empty (the default), then no root password will be set,
and root will need no password to log in.
WARNING! WARNING!
Although pretty strong, MD5 is now an old hash function, and
suffers from some weaknesses, which makes it susceptible to attacks.
It is showing its age, so this root password should not be trusted
to properly secure any product that can be shipped to the wide,
hostile world.
WARNING! WARNING!
The password appears in clear in the .config file, and may appear
in the build log! Avoid using a valuable password if either the
.config file or the build log may be distributed!
choice
prompt "/dev management"
default BR2_ROOTFS_DEVICE_CREATION_STATIC

9
system/system.mk
View File

@ -1,5 +1,9 @@
TARGET_GENERIC_HOSTNAME:=$(call qstrip,$(BR2_TARGET_GENERIC_HOSTNAME))
TARGET_GENERIC_ISSUE:=$(call qstrip,$(BR2_TARGET_GENERIC_ISSUE))
TARGET_GENERIC_ROOT_PASSWD:=$(call qstrip,$(BR2_TARGET_GENERIC_ROOT_PASSWD))
ifneq ($(TARGET_GENERIC_ROOT_PASSWD),)
TARGET_GENERIC_ROOT_PASSWD_HASH=$(shell mkpasswd -m md5 "$(TARGET_GENERIC_ROOT_PASSWD)")
endif
TARGET_GENERIC_GETTY:=$(call qstrip,$(BR2_TARGET_GENERIC_GETTY_PORT))
TARGET_GENERIC_GETTY_BAUDRATE:=$(call qstrip,$(BR2_TARGET_GENERIC_GETTY_BAUDRATE))
TARGET_GENERIC_GETTY_TERM:=$(call qstrip,$(BR2_TARGET_GENERIC_GETTY_TERM))
@ -14,6 +18,9 @@ target-generic-issue:
mkdir -p $(TARGET_DIR)/etc
echo "$(TARGET_GENERIC_ISSUE)" > $(TARGET_DIR)/etc/issue
target-root-passwd:
$(SED) 's,^root:[^:]*:,root:$(TARGET_GENERIC_ROOT_PASSWD_HASH):,' $(TARGET_DIR)/etc/shadow
target-generic-getty-busybox:
$(SED) '/# GENERIC_SERIAL$$/s~^.*#~$(TARGET_GENERIC_GETTY)::respawn:/sbin/getty -L $(TARGET_GENERIC_GETTY) $(TARGET_GENERIC_GETTY_BAUDRATE) $(TARGET_GENERIC_GETTY_TERM) #~' \
$(TARGET_DIR)/etc/inittab
@ -40,6 +47,8 @@ ifneq ($(TARGET_GENERIC_ISSUE),)
TARGETS += target-generic-issue
endif
TARGETS += target-root-passwd
ifeq ($(BR2_ROOTFS_SKELETON_DEFAULT),y)
ifeq ($(BR2_PACKAGE_SYSVINIT),y)
TARGETS += target-generic-getty-sysvinit