shadow: Add version 4.1.4.2 and checksum.

* This version now has Linux-PAM support enabled in OE so will need some testing and maybe a little tweaking.
* Add pam.d config files for common shadow utils in addition to the default ones.
* Cleanup shadow defaults and make shadow 'play nice' with PAM.
* Update pam.d service files to suggested upstream Linux-PAM layout.
* TODO: Some Shadow default session files still use the older layout (incluse system-auth for everything). These will need newer files to be added to the pam.d folder in the recipe as they are found.
Acked-by: Koen Kooi <koen@openembedded.org>
Acked-by: Philip Balister <philip@balister.org>

9 files changed, 274 insertions, 0 deletions

diff --git a/recipes/shadow/files/login_defs_pam.sed b/recipes/shadow/files/login_defs_pam.sed
new file mode 100644
index 0000000000..655f115870
--- /dev/null
+++ b/recipes/shadow/files/login_defs_pam.sed
@@ -0,0 +1,25 @@
+/^FAILLOG_ENAB/b comment
+/^LASTLOG_ENAB/b comment
+/^MAIL_CHECK_ENAB/b comment
+/^OBSCURE_CHECKS_ENAB/b comment
+/^PORTTIME_CHECKS_ENAB/b comment
+/^QUOTAS_ENAB/b comment
+/^MOTD_FILE/b comment
+/^FTMP_FILE/b comment
+/^NOLOGINS_FILE/b comment
+/^ENV_HZ/b comment
+/^PASS_MIN_LEN/b comment
+/^SU_WHEEL_ONLY/b comment
+/^CRACKLIB_DICTPATH/b comment
+/^PASS_CHANGE_TRIES/b comment
+/^PASS_ALWAYS_WARN/b comment
+/^CHFN_AUTH/b comment
+/^ENVIRON_FILE/b comment
+
+b exit
+
+: comment
+  s:^:#:
+
+: exit
+
diff --git a/recipes/shadow/files/pam.d/chfn b/recipes/shadow/files/pam.d/chfn
new file mode 100644
index 0000000000..baf7698bba
--- /dev/null
+++ b/recipes/shadow/files/pam.d/chfn
@@ -0,0 +1,14 @@
+#
+# The PAM configuration file for the Shadow `chfn' service
+#
+
+# This allows root to change user infomation without being
+# prompted for a password
+auth		sufficient	pam_rootok.so
+
+# The standard Unix authentication modules, used with
+# NIS (man nsswitch) as well as normal /etc/passwd and
+# /etc/shadow entries.
+auth       include      common-auth
+account    include      common-account
+session    include      common-session
diff --git a/recipes/shadow/files/pam.d/chpasswd b/recipes/shadow/files/pam.d/chpasswd
new file mode 100644
index 0000000000..9e3efa68ba
--- /dev/null
+++ b/recipes/shadow/files/pam.d/chpasswd
@@ -0,0 +1,4 @@
+# The PAM configuration file for the Shadow 'chpasswd' service
+#
+
+password   include      common-password
diff --git a/recipes/shadow/files/pam.d/chsh b/recipes/shadow/files/pam.d/chsh
new file mode 100644
index 0000000000..8fb169f64e
--- /dev/null
+++ b/recipes/shadow/files/pam.d/chsh
@@ -0,0 +1,19 @@
+#
+# The PAM configuration file for the Shadow `chsh' service
+#
+
+# This will not allow a user to change their shell unless
+# their current one is listed in /etc/shells. This keeps
+# accounts with special shells from changing them.
+auth       required   pam_shells.so
+
+# This allows root to change user shell without being
+# prompted for a password
+auth		sufficient	pam_rootok.so
+
+# The standard Unix authentication modules, used with
+# NIS (man nsswitch) as well as normal /etc/passwd and
+# /etc/shadow entries.
+auth       include      common-auth
+account    include      common-account
+session    include      common-session
diff --git a/recipes/shadow/files/pam.d/login b/recipes/shadow/files/pam.d/login
new file mode 100644
index 0000000000..2186d3eee9
--- /dev/null
+++ b/recipes/shadow/files/pam.d/login
@@ -0,0 +1,91 @@
+#
+# The PAM configuration file for the Shadow `login' service
+#
+
+# Enforce a minimal delay in case of failure (in microseconds).
+# (Replaces the `FAIL_DELAY' setting from login.defs)
+# Note that other modules may require another minimal delay. (for example,
+# to disable any delay, you should add the nodelay option to pam_unix)
+auth       optional   pam_faildelay.so  delay=3000000
+
+# Outputs an issue file prior to each login prompt (Replaces the
+# ISSUE_FILE option from login.defs). Uncomment for use
+# auth       required   pam_issue.so issue=/etc/issue
+
+# Disallows root logins except on tty's listed in /etc/securetty
+# (Replaces the `CONSOLE' setting from login.defs)
+# Note that it is included as a "requisite" module. No password prompts will
+# be displayed if this module fails to avoid having the root password
+# transmitted on unsecure ttys.
+# You can change it to a "required" module if you think it permits to
+# guess valid user names of your system (invalid user names are considered
+# as possibly being root).
+auth       requisite  pam_securetty.so
+
+# Disallows other than root logins when /etc/nologin exists
+# (Replaces the `NOLOGINS_FILE' option from login.defs)
+auth       requisite  pam_nologin.so
+
+# SELinux needs to be the first session rule. This ensures that any 
+# lingering context has been cleared. Without out this it is possible 
+# that a module could execute code in the wrong domain.
+# When the module is present, "required" would be sufficient (When SELinux
+# is disabled, this returns success.)
+session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close
+
+# This module parses environment configuration file(s)
+# and also allows you to use an extended config
+# file /etc/security/pam_env.conf.
+# 
+# parsing /etc/environment needs "readenv=1"
+session       required   pam_env.so readenv=1
+# locale variables are also kept into /etc/default/locale in etch
+# reading this file *in addition to /etc/environment* does not hurt
+session       required   pam_env.so readenv=1 envfile=/etc/default/locale
+
+# Standard Un*x authentication.
+@include common-auth
+
+# This allows certain extra groups to be granted to a user
+# based on things like time of day, tty, service, and user.
+# Please edit /etc/security/group.conf to fit your needs
+# (Replaces the `CONSOLE_GROUPS' option in login.defs)
+auth       optional   pam_group.so
+
+# Uncomment and edit /etc/security/time.conf if you need to set
+# time restrainst on logins.
+# (Replaces the `PORTTIME_CHECKS_ENAB' option from login.defs
+# as well as /etc/porttime)
+# account    requisite  pam_time.so
+
+# Uncomment and edit /etc/security/access.conf if you need to
+# set access limits.
+# (Replaces /etc/login.access file)
+# account  required       pam_access.so
+
+# Sets up user limits according to /etc/security/limits.conf
+# (Replaces the use of /etc/limits in old login)
+session    required   pam_limits.so
+
+# Prints the last login info upon succesful login
+# (Replaces the `LASTLOG_ENAB' option from login.defs)
+session    optional   pam_lastlog.so
+
+# Prints the motd upon succesful login
+# (Replaces the `MOTD_FILE' option in login.defs)
+session    optional   pam_motd.so
+
+# Prints the status of the user's mailbox upon succesful login
+# (Replaces the `MAIL_CHECK_ENAB' option from login.defs). 
+#
+# This also defines the MAIL environment variable
+# However, userdel also needs MAIL_DIR and MAIL_FILE variables
+# in /etc/login.defs to make sure that removing a user 
+# also removes the user's mail spool file.
+# See comments in /etc/login.defs
+session    optional   pam_mail.so standard
+
+# Standard Un*x account and session
+account    include      common-account
+password   include      common-password
+session    include      common-session
diff --git a/recipes/shadow/files/pam.d/newusers b/recipes/shadow/files/pam.d/newusers
new file mode 100644
index 0000000000..4aa3dde48b
--- /dev/null
+++ b/recipes/shadow/files/pam.d/newusers
@@ -0,0 +1,4 @@
+# The PAM configuration file for the Shadow 'newusers' service
+#
+
+password   include      common-password
diff --git a/recipes/shadow/files/pam.d/passwd b/recipes/shadow/files/pam.d/passwd
new file mode 100644
index 0000000000..f534992435
--- /dev/null
+++ b/recipes/shadow/files/pam.d/passwd
@@ -0,0 +1,5 @@
+#
+# The PAM configuration file for the Shadow `passwd' service
+#
+
+password   include      common-password
diff --git a/recipes/shadow/files/pam.d/su b/recipes/shadow/files/pam.d/su
new file mode 100644
index 0000000000..8e35137f37
--- /dev/null
+++ b/recipes/shadow/files/pam.d/su
@@ -0,0 +1,60 @@
+#
+# The PAM configuration file for the Shadow `su' service
+#
+
+# This allows root to su without passwords (normal operation)
+auth       sufficient pam_rootok.so
+
+# Uncomment this to force users to be a member of group root
+# before they can use `su'. You can also add "group=foo"
+# to the end of this line if you want to use a group other
+# than the default "root" (but this may have side effect of
+# denying "root" user, unless she's a member of "foo" or explicitly
+# permitted earlier by e.g. "sufficient pam_rootok.so").
+# (Replaces the `SU_WHEEL_ONLY' option from login.defs)
+# auth       required   pam_wheel.so
+
+# Uncomment this if you want wheel members to be able to
+# su without a password.
+# auth       sufficient pam_wheel.so trust
+
+# Uncomment this if you want members of a specific group to not
+# be allowed to use su at all.
+# auth       required   pam_wheel.so deny group=nosu
+
+# Uncomment and edit /etc/security/time.conf if you need to set
+# time restrainst on su usage.
+# (Replaces the `PORTTIME_CHECKS_ENAB' option from login.defs
+# as well as /etc/porttime)
+# account    requisite  pam_time.so
+
+# This module parses environment configuration file(s)
+# and also allows you to use an extended config
+# file /etc/security/pam_env.conf.
+# 
+# parsing /etc/environment needs "readenv=1"
+session       required   pam_env.so readenv=1
+# locale variables are also kept into /etc/default/locale in etch
+# reading this file *in addition to /etc/environment* does not hurt
+session       required   pam_env.so readenv=1 envfile=/etc/default/locale
+
+# Defines the MAIL environment variable
+# However, userdel also needs MAIL_DIR and MAIL_FILE variables
+# in /etc/login.defs to make sure that removing a user 
+# also removes the user's mail spool file.
+# See comments in /etc/login.defs
+#
+# "nopen" stands to avoid reporting new mail when su'ing to another user
+session    optional   pam_mail.so nopen
+
+# Sets up user limits, please uncomment and read /etc/security/limits.conf
+# to enable this functionality.
+# (Replaces the use of /etc/limits in old login)
+# session    required   pam_limits.so
+
+# The standard Unix authentication modules, used with
+# NIS (man nsswitch) as well as normal /etc/passwd and
+# /etc/shadow entries.
+auth       include      common-auth
+account    include      common-account
+session    include      common-session
diff --git a/recipes/shadow/shadow_4.1.4.2.bb b/recipes/shadow/shadow_4.1.4.2.bb
new file mode 100644
index 0000000000..04887a01d1
--- /dev/null
+++ b/recipes/shadow/shadow_4.1.4.2.bb
@@ -0,0 +1,52 @@
+DESCRIPTION = "login/password and account utilities"
+LICENSE = "GPL"
+
+DEPEND = "libpam"
+RDEPEND = "${DEPEND}"
+
+PR = "r5"
+
+EXTRA_OECONF += " --enable-shared  --enable-static --with-libpam --without-libcrack"
+
+inherit autotools
+
+HOMEPAGE = "http://pkg-shadow.alioth.debian.org/"
+SRC_URI = "ftp://pkg-shadow.alioth.debian.org/pub/pkg-shadow/shadow-${PV}.tar.bz2 \
+           file://login_defs_pam.sed \
+"
+
+# Additional Policy files for PAM
+SRC_URI_append = " \
+           file://pam.d/chfn \ 
+           file://pam.d/chpasswd \
+           file://pam.d/chsh \
+           file://pam.d/login \
+           file://pam.d/newusers \
+           file://pam.d/passwd \
+           file://pam.d/su \
+"
+
+S = "${WORKDIR}/shadow-${PV}"
+
+CFLAGS_append = " -I../include"
+
+do_install_append() {
+  # Ensure that the image has as /var/spool/mail dir so shadow can put mailboxes there if the user
+  # reconfigures Shadow to default (see sed below).
+  install -d ${D}${localstatedir}/spool/mail/  
+  
+  install -d ${D}${sysconfdir}/pam.d/  
+  install -m 0644 ${WORKDIR}/pam.d/* ${D}${sysconfdir}/pam.d/
+
+  # Remove defaults that are not used when supporting PAM
+  sed -i -f ${WORKDIR}/login_defs_pam.sed ${D}${sysconfdir}/login.defs
+
+  # Enable CREATE_HOME by default.
+  sed -i 's/#CREATE_HOME/CREATE_HOME/g' ${D}${sysconfdir}/login.defs 
+  
+  # As we are on an embedded system ensure the users mailbox is in ~/ not 
+  # /var/spool/mail by default as who knows where or how big /var is.
+  # The system MDA will set this later anyway.
+  sed -i 's/MAIL_DIR/#MAIL_DIR/g' ${D}${sysconfdir}/login.defs 
+  sed -i 's/#MAIL_FILE/MAIL_FILE/g' ${D}${sysconfdir}/login.defs 
+}