Restore use of dmidecode in dracut for assettag and uuid

This prevents exposing these values in /proc/cmdline.

Signed-off-by: Jonathon Anderson <janderson@ciq.com>

dracut/modules.d/90wwinit/module-setup.sh

@@ -14,7 +14,7 @@ depends() {
 }
 
 install() {
-    inst_multiple cpio curl
+    inst_multiple cpio curl dmidecode
     inst_hook cmdline 30 "$moddir/parse-wwinit.sh"
     inst_hook pre-mount 30 "$moddir/load-wwinit.sh"
 }

dracut/modules.d/90wwinit/parse-wwinit.sh

@@ -6,7 +6,9 @@
 if [ "${root}" = "wwinit" ]
 then
     info "root=${root}"
-    wwinit_uri="$(getarg wwinit.uri)"
+    uuid=$(dmidecode -s system-uuid)
+    assetkey=$(dmidecode -s chassis-asset-tag | sed -E -e 's/(^ +| +$)//g' -e 's/^(Unknown|Not Specified)$//g' -e 's/ /_/g')
+    wwinit_uri="$(getarg wwinit.uri)?assetkey=${assetkey}&uuid=${uuid}"
     export wwinit_container="${wwinit_uri}&stage=container&compress=gz"; info "wwinit_container=${wwinit_container}"
     export wwinit_system="${wwinit_uri}&stage=system&compress=gz"; info "wwinit_system=${wwinit_system}"
     export wwinit_runtime="${wwinit_uri}&stage=runtime&compress=gz"; info "wwinit_runtime=${wwinit_runtime}"

etc/grub/grub.cfg.ww

@@ -42,7 +42,7 @@ menuentry "Network boot node: {{.Id}}" --id ww4 {
 menuentry "Network boot node with dracut: {{.Id}}" --id dracut {
     initramfs="${uri}&stage=initramfs"
 
-    wwinit_uri="http://{{.Ipaddr}}:{{.Port}}/provision/${net_default_mac}?assetkey=${assetkey}"
+    wwinit_uri="http://{{.Ipaddr}}:{{.Port}}/provision/${net_default_mac}"
 
     {{if .KernelOverride }}
     echo "Kernel:                {{.KernelOverride}}"

etc/ipxe/dracut.ipxe

@@ -13,7 +13,8 @@ echo Kernel:        {{.ContainerName}} (container default)
 echo KernelArgs:    {{.KernelArgs}}
 echo
 
-set uri http://{{.Ipaddr}}:{{.Port}}/provision/{{.Hwaddr}}?assetkey=${asset}&uuid=${uuid}
+set baseuri http://{{.Ipaddr}}:{{.Port}}/provision/{{.Hwaddr}}
+set uri ${baseuri}?assetkey=${asset}&uuid=${uuid}
 echo Warewulf Controller: {{.Ipaddr}}
 
 echo Downloading Kernel Image:
@@ -29,7 +30,7 @@ echo Downloading initramfs
 initrd --name initramfs ${uri}&stage=initramfs || goto reboot
 
 set dracut_net rd.neednet=1 {{range $devname, $netdev := .NetDevs}}{{if and $netdev.Hwaddr $netdev.Device}} ifname={{$netdev.Device}}:{{$netdev.Hwaddr}} {{end}}{{end}}
-set dracut_wwinit root=wwinit wwinit.uri=${uri} {{if ne .KernelOverride ""}}wwinit.KernelOverride={{ .KernelOverride }}{{end}} init=/init
+set dracut_wwinit root=wwinit wwinit.uri=${baseuri} {{if ne .KernelOverride ""}}wwinit.KernelOverride={{ .KernelOverride }}{{end}} init=/init
 
 echo Booting initramfs
 #echo Network KernelArgs: ${dracut_net}

warewulf.spec.in

@@ -95,6 +95,7 @@ Requires: dracut-network
 %endif
 Requires: curl
 Requires: cpio
+Requires: dmidecode
 
 %description dracut
 Warewulf is a stateless and diskless container operating system provisioning
@@ -220,7 +221,7 @@ getent group %{wwgroup} >/dev/null || groupadd -r %{wwgroup}
 
 %changelog
 * Tue Jun 18 2024 Josh Burks <jeburks2@asu.edu>
-- Add curl, cpio as requires for warewulf-dracut
+- Add curl, cpio, and dracut as requires for warewulf-dracut
 
 * Thu Apr 18 2024 Jonathon Anderson <janderson@ciq.com>
 - New warewulf-dracut subpackage