Initial commit of nss-localuserguppy_6.99.4guppy_6.99.3guppy_6.99.2guppy_6.99.1guppy/6.99.4guppy/6.99.3guppy/6.99.2guppy/6.99.16.99.46.99.36.99.26.99.1

`nss-localuser` is a plugin for the GNU Name Service Switch (NSS)
functionality of the GNU C Library (`glibc`) providing host name
resolution for *"localuser"* family of virtual hostnames.

The delivered NSS service defines one virtual host of name `localuser`
that resolves to an IP address of the localhost loopback that integrates
user ID.

Change-Id: I2a33dc23518ce3f4581f5c37df9476dbbc58f262
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 44 insertions, 0 deletions

diff --git a/activate-localuser.sh b/activate-localuser.sh
new file mode 100755
index 0000000..8f40116
--- /dev/null
+++ b/activate-localuser.sh
@@ -0,0 +1,44 @@
+#!/bin/sh
+
+action=$(echo ${1:-status} | tr '[a-z]' '[A-Z]')
+file=${2:-/etc/nsswitch.conf}
+
+# compute activated value
+activated=false
+if grep -q '^hosts:.*\<localuser\>' "${file}" 2>/dev/null; then
+  activated=true
+fi
+
+# compute activate value
+case ${action} in
+  ON|YES|TRUE|1) activate=true;;
+  OFF|NO|FALSE|0) activate=false;;
+  QUERY|TEST|CHECK|STATUS) ${activated} && echo ON || echo OFF; exit 0;;
+  *) echo "Bad command: $1" >&2; exit 1;;
+esac
+
+# exit if already set as desired
+[ "${activate}" = "${activated}" ] && exit 0
+
+# process
+if ${activate}; then
+  sedcmd='/^hosts:/s/hosts:[ \t]*/&localuser /'
+else
+  sedcmd='/^hosts:/s/localuser *//'
+fi
+if ! cp "${file}" "${file}~"; then
+  echo "Can't save file ${file} to ${file}~" >&2
+  exit 1
+fi
+if ! grep -q '^hosts:' "${file}"; then
+  if ! echo >> "${file}" || ! echo "hosts:	" >> "${file}"; then
+    echo "Can't add host: to ${file}"  >&2
+    cp "${file}~" "${file}" && rm "${file}~"
+    exit 1
+  fi
+fi
+if ! sed -i "${sedcmd}" "${file}"; then
+  echo "Can't process ${file}"  >&2
+  cp "${file}~" "${file}" && rm "${file}~"
+  exit 1
+fi