From b4bd21c722da92de409962d8b0032760bd39b35b Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sat, 25 Mar 2017 09:01:25 +0200
Subject: Configure email

---
 init | 51 ++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 48 insertions(+), 3 deletions(-)

(limited to 'init')

diff --git a/init b/init
index 28ec293..a725372 100755
--- a/init
+++ b/init
@@ -52,10 +52,35 @@ SYSTEMD_LOG_LEVEL=info /lib/systemd/systemd-udevd --daemon --resolve-names=never
 udevadm trigger --action=add
 udevadm settle || true
 
-# Parse command line.
+# Parse the kernel command line. This is complicated by the fact that the
+# values can be quoted, for example:
 #
-cmdline="$(cat /proc/cmdline)"
-info "boot cmdline: $cmdline"
+# foo='foo fox'
+# bar="bar 'box'"
+#
+# First we separete quoted variables and arguments with newlines (giving
+# priority to assignments). Then we replace whitespaces with newline on
+# lines that don't contain quites. Finally, clean up by removing blank
+# lines.
+#
+readarray -t cmdline < <(cat /proc/cmdline | \
+  sed -r -e "s/([^ ]+=)?('[^']*'|\"[^\"]*\")/\n\1\2\n/g" | \
+  sed -r -e "/['\"]/!s/ /\n/g" |
+  sed -r -e '/^\s*$/d')
+
+# Enter all buildos variables as bash variables.
+#
+info "command line:"
+for v in "${cmdline[@]}"; do
+  var="$(sed -r -n -e 's/^buildos\.([^=]+)=.*$/\1/p' <<<"$v")" # Extract name.
+
+  if [ -n "$var" ]; then
+    val="$(sed -r -e 's/^[^=]+=(.*)$/\1/' <<<"$v")"            # Extract value.
+    val="$(sed -r -e "s/^('(.*)'|\"(.*)\")$/\2\3/" <<<"$val")" # Strip quoted.
+    info "  $var=$val"
+    declare "$var=$val"
+  fi
+done
 
 # Figure out network configuration and generate the corresponding
 # /etc/network/interfaces.
@@ -200,6 +225,26 @@ bind-interfaces
 dhcp-range=${priv_netbase}.10,${priv_netbase}.250,12h
 EOF
 
+# Configure Postfix.
+#
+cat <<<"$hname" >/etc/mailname
+
+sed -r -i \
+ -e "s%^(myhostname).*%\1 = $hname%" \
+ -e 's%^(mydestination).*%\1 = $myhostname, localhost.localdomain, localhost%' \
+ -e 's%^(mynetworks).*%\1 = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128%' \
+ -e "s%^(relayhost).*%\1 = $smtp_relay%" \
+ /etc/postfix/main.cf
+
+# Make admin alias for buildos.admin_email, redirect root to admin.
+#
+cat <<EOF >>/etc/aliases
+admin: $admin_email
+root: admin
+EOF
+
+newaliases
+
 /bin/bash
 
 # Hand off to systemd. But first arrange to keep console output (which
-- 
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