From 181aa876a7212f8a332ec7a0d151c2688f93feb3 Mon Sep 17 00:00:00 2001
From: Jarrod Johnson <jjohnson2@lenovo.com>
Date: Thu, 30 Mar 2023 16:36:40 -0400
Subject: [PATCH] Draft initramfs addons for Ubuntu 18

For older Ubuntu 18, the automated installer is debian-installer.  Derive from the
prototype debian work, with same limitation about more limited network bringup that
we are stuck with from Debian limitations.
---
 .../S25confluentinit                          |   2 +-
 .../S25confluentinit                          | 164 ++++++++++++++++++
 2 files changed, 165 insertions(+), 1 deletion(-)
 create mode 100644 confluent_osdeploy/ubuntu18.04/initramfs/lib/debian-installer-startup.d/S25confluentinit

diff --git a/confluent_osdeploy/debian/initramfs/lib/debian-installer-startup.d/S25confluentinit b/confluent_osdeploy/debian/initramfs/lib/debian-installer-startup.d/S25confluentinit
index 64859809..42f5ab97 100644
--- a/confluent_osdeploy/debian/initramfs/lib/debian-installer-startup.d/S25confluentinit
+++ b/confluent_osdeploy/debian/initramfs/lib/debian-installer-startup.d/S25confluentinit
@@ -69,7 +69,7 @@ if [ "$v4cfgmeth" = "static" ]; then
     for namesrv in "$namesrvs"; do
         setdebopt netcfg/get_nameservers $namesrv string
     done
-elif [ "$vpcfgmeth" = "dhcp" ]; then
+elif [ "$v4cfgmeth" = "dhcp" ]; then
     setdebopt netcfg/disable_dhcp false boolean
     setdebopt netcfg/confirm_static false boolean
 fi
diff --git a/confluent_osdeploy/ubuntu18.04/initramfs/lib/debian-installer-startup.d/S25confluentinit b/confluent_osdeploy/ubuntu18.04/initramfs/lib/debian-installer-startup.d/S25confluentinit
new file mode 100644
index 00000000..44156d36
--- /dev/null
+++ b/confluent_osdeploy/ubuntu18.04/initramfs/lib/debian-installer-startup.d/S25confluentinit
@@ -0,0 +1,164 @@
+reverse_uuid() {
+    echo $1 | head -c 8 | tail -c 2
+    echo $1 | head -c 6 | tail -c 2
+    echo $1 | head -c 4 | tail -c 2
+    echo $1 | head -c 2 | tail -c 2
+    echo $1 | head -c 13 | tail -c 2
+    echo $1 | head -c 11 | tail -c 2
+    echo $1 | head -c 18 | tail -c 2
+    echo $1 | head -c 16 | tail -c 2
+    echo $1 | tail -c 18 | sed -e s/-//
+}
+setdebopt() {
+    debconf-set $1 $2
+    echo d-i $1 $3 $2 >> /preseed.cfg
+}
+
+mkdir -p /etc/confluent
+for i in /sys/class/net/*; do
+    ip link set $(basename $i) up
+done
+TRIES=5
+while [ ! -e /dev/disk ] && [ $TRIES -gt 0 ]; do
+    sleep 2
+    TRIES=$((TRIES - 1))
+done
+for i in /sys/class/net/*; do
+    ip link set $(basename $i) up
+done
+cp -a /tls/* /etc/ssl/certs/
+if [ -e /dev/disk/by-label/CNFLNT_IDNT ]; then
+    tmnt=$(mktemp -d)
+    tcfg=$(mktemp)
+    mount /dev/disk/by-label/CNFLNT_IDNT $tmnt
+    cd $tmnt
+    deploysrvs=$(sed -n '/^deploy_servers:/,/^[^-]/p' cnflnt.yml |grep ^-|sed -e 's/^- //'|grep -v :)
+    nodename=$(grep ^nodename: cnflnt.yml|cut -f 2 -d ' ')
+    sed -n '/^net_cfgs:/,/^[^- ]/{/^[^- ]/!p}' cnflnt.yml |sed -n '/^-/,/^-/{/^-/!p}'| sed -e 's/^[- ]*//'> $tcfg
+    autoconfigmethod=$(grep ^ipv4_method: $tcfg)
+    autoconfigmethod=${autoconfigmethod#ipv4_method: }
+    NICGUESS=$(ip link|grep LOWER_UP|grep -v LOOPBACK|cut -d ' ' -f 2 | sed -e 's/:$//'|head -n 1)
+    if [ "$autoconfigmethod" = "static" ]; then
+        setdebopt netcfg/disable_dhcp true boolean
+        v4addr=$(grep ^ipv4_address: $tcfg|cut -d: -f 2|sed -e 's/ //')
+        v4gw=$(grep ^ipv4_gateway: $tcfg|cut -d: -f 2| sed -e 's/ //')
+        if [ "$v4gw" = "null" ]; then
+            v4gw=""
+        fi
+        v4nm=$(grep ^ipv4_netmask: $tcfg|cut -d: -f 2|sed -e 's/ //')
+        setdebopt netcfg/get_netmask $v4nm string
+        setdebopt netcfg/get_ipaddress ${v4addr%/*} string
+        setdebopt netcfg/confirm_static true boolean
+        ip addr add dev $NICGUESS $v4addr
+        if [ ! -z "$v4gw" ]; then
+            setdebopt netcfg/get_gateway $v4gw string
+            ip route add default via $v4gw
+        fi
+        #TODO: nameservers
+    elif [ "$v4cfgmeth" = "dhcp" ]; then
+        setdebopt netcfg/disable_dhcp false boolean
+        setdebopt netcfg/confirm_static false boolean
+        udhcpc $NICGUESS
+    fi
+    mgr=$deploysrvs
+    ln -s /opt/confluent/bin/clortho /opt/confluent/bin/genpasshmac
+    hmackeyfile=/tmp/cnflnthmackeytmp
+    passfile=/tmp/cnflnttmppassfile
+    passcrypt=/tmp/cnflntcryptfile
+    hmacfile=/tmp/cnflnthmacfile
+    echo -n $(grep ^apitoken: cnflnt.yml|cut -d ' ' -f 2) > $hmackeyfile
+    wget --header="CONFLUENT_NODENAME: $nodename" --header="CONFLUENT_CRYPTHMAC: $(cat $hmacfile)" --post-file=$passcrypt https://$mgr/confluent-api/self/registerapikey -O - --quiet
+    rm registerapikey
+    cp $passfile /etc/confluent/confluent.apikey
+    nic=$NICGUESS
+else
+    dhuuid=$(reverse_uuid $(cat /sys/devices/virtual/dmi/id/product_uuid))
+    dhcpid=$(mktemp)
+    mkdir -p /etc/confluent
+    cp /tls/* /etc/ssl/certs/
+    for nic in $(ip link | grep mtu|grep -v LOOPBACK|cut -d: -f 2|sed -e 's/ //'); do
+        ip link set $nic up
+    done
+    for nic in $(ip link | grep mtu|grep -v LOOPBACK|grep LOWER_UP|cut -d: -f 2|sed -e 's/ //'); do
+        if udhcpc -i $nic -p $dhcpid -t 2 -T 2 -n -x 93:0007 -x 97:00$dhuuid -q; then
+            /opt/confluent/bin/copernicus > /etc/confluent/confluent.info
+            if grep ^MANAGER:.*\\. /etc/confluent/confluent.info ; then
+                break
+            fi
+        fi
+        ip -4 flush dev $nic
+    done
+    mgr=$(grep ^MANAGER:.*\\. /etc/confluent/confluent.info|head -n 1|cut -d: -f 2|sed -e 's/ //')
+    nodename=$(grep ^NODENAME: /etc/confluent/confluent.info|head -n 1|cut -d: -f 2|sed -e 's/ //')
+    /opt/confluent/bin/clortho $nodename $mgr > /etc/confluent/confluent.apikey
+fi
+apikey=$(cat /etc/confluent/confluent.apikey)
+cd /etc/confluent
+wget --header="CONFLUENT_NODENAME: $nodename" --header="CONFLUENT_APIKEY: $apikey" https://$mgr/confluent-api/self/deploycfg
+cd -
+predir=$(mktemp -d)
+cd $predir
+profile=$(grep ^profile: /etc/confluent/deploycfg|cut -d ' ' -f 2)
+namesrvs=$(sed -n '/^nameservers:/,/^[^-]/p' /etc/confluent/deploycfg|grep ^- | cut -d ' ' -f 2|sed -e 's/ //')
+for namesrv in "$namesrvs"; do
+    setdebopt netcfg/get_nameservers $namesrv string
+done
+rootpass=$(grep ^rootpassword: /etc/confluent/deploycfg|cut -d ' ' -f 2|sed -e 's/ //')
+if [ "$rootpass" = null ] || [ -z "$rootpass" ]; then
+    setdebopt passwd/root-login false boolean
+else
+    setdebopt passwd/root-login true boolean
+    setdebopt passwd/root-password-crypted $rootpass string
+fi
+setdebopt time/zone $(grep ^timezone: /etc/confluent/deploycfg|cut -d ' ' -f 2|sed -e 's/ //') string
+ntpsrvs=$(sed -n '/^ntpservers:/,/^[^-]/p' /etc/confluent/deploycfg|grep ^- | cut -d ' ' -f 2|sed -e 's/ //')
+for ntpsrv in "$ntpsrvs"; do
+    setdebopt clock-setup/ntp true boolean
+    setdebopt clock-setup/ntep-server $ntpsrv string
+done
+setdebopt debian-installer/locale $(grep ^locale: /etc/confluent/deploycfg|cut -d ' ' -f 2) select
+domainname=$(grep ^dnsdomain: /etc/confluent/deploycfg|cut -d ' ' -f 2)
+if [ ! -z "$domainname" ] && [ "$domainname" != "null" ]; then
+    setdebopt netcfg/get_domain $domainname string
+fi
+
+
+
+
+wget https://$mgr/confluent-public/os/$profile/scripts/pre.sh
+chmod u+x pre.sh
+wget https://$mgr/confluent-public/os/$profile/preseed.cfg
+cat preseed.cfg >> /preseed.cfg
+setdebopt auto-install/enable true boolean
+setdebopt partman/early_command  $predir/pre.sh string
+cd -
+ip -4 a flush dev $nic
+setdebopt netcfg/choose_interface $nic select
+setdebopt netcfg/get_hostname $nodename string
+if [ ! -e /dev/disk/by-label/CNFLNT_IDNT ]; then
+    v4cfgmeth=$(grep ipv4_method: /etc/confluent/deploycfg |cut -d: -f 2|sed -e 's/ //')
+    if [ "$v4cfgmeth" = "static" ]; then
+        setdebopt netcfg/disable_dhcp true boolean
+        v4addr=$(grep ^ipv4_address: /etc/confluent/deploycfg|cut -d: -f 2|sed -e 's/ //')
+        v4gw=$(grep ^ipv4_gateway: /etc/confluent/deploycfg|cut -d: -f 2| sed -e 's/ //')
+        if [ "$v4gw" = "null" ]; then
+            v4gw=""
+        fi
+        v4nm=$(grep ^ipv4_netmask: /etc/confluent/deploycfg|cut -d: -f 2|sed -e 's/ //')
+        setdebopt netcfg/get_netmask $v4nm string
+        setdebopt netcfg/get_ipaddress $v4addr string
+        setdebopt netcfg/confirm_static true boolean
+        if [ ! -z "$v4gw" ]; then
+            setdebopt netcfg/get_gateway $v4gw string
+        fi
+        namesrvs=$(sed -n '/^nameservers:/,/^[^-]/p' /etc/confluent/deploycfg|grep ^- | cut -d ' ' -f 2|sed -e 's/ //')
+        for namesrv in "$namesrvs"; do
+            setdebopt netcfg/get_nameservers $namesrv string
+        done
+    elif [ "$vpcfgmeth" = "dhcp" ]; then
+        setdebopt netcfg/disable_dhcp false boolean
+        setdebopt netcfg/confirm_static false boolean
+    fi
+fi
+
+