commit f92bb4f96b434bc7ffdb8ae95164e665eb465e3a
Author: Dustin C. Hatch <dustin@hatch.name>
Date:   Wed Aug 13 15:45:03 2025 -0500

    Initial commit

diff --git a/host-provisioner.key b/host-provisioner.key
new file mode 100644
index 0000000..04db65e
--- /dev/null
+++ b/host-provisioner.key
@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICoOO/ZYMxRgmyvqZwGN3NM5pHyh3NBdC7iZrXIopt93 Host Provisioner
diff --git a/notify-online.preset b/notify-online.preset
new file mode 100644
index 0000000..9e2c2ec
--- /dev/null
+++ b/notify-online.preset
@@ -0,0 +1 @@
+enable notify-online.service
diff --git a/notify-online.service b/notify-online.service
new file mode 100644
index 0000000..2321df1
--- /dev/null
+++ b/notify-online.service
@@ -0,0 +1,42 @@
+[Unit]
+Description=Notify infrastructure services that this host is online
+ConditionFirstBoot=yes
+After=sshd.service
+After=network-online.target
+Wants=network-online.target
+After=systemd-user-sessions.service
+
+[Service]
+Type=exec
+ExecStart=/usr/libexec/dch/notify-online
+# Must run as root in order to read QEMU fw_config, so enable maximum
+# sandbox restrictions.
+CapabilityBoundingSet=
+DeviceAllow=
+DevicePolicy=closed
+LockPersonality=yes
+MemoryDenyWriteExecute=yes
+NoNewPrivileges=yes
+PrivateDevices=yes
+PrivateUsers=yes
+PrivateTmp=yes
+ProcSubset=pid
+ProtectClock=yes
+ProtectControlGroups=yes
+ProtectHome=yes
+ProtectHostname=yes
+ProtectKernelLogs=yes
+ProtectKernelModules=yes
+ProtectKernelTunables=yes
+ProtectProc=invisible
+ProtectSystem=strict
+RestrictAddressFamilies=AF_INET AF_INET6
+RestrictNamespaces=yes
+RestrictRealtime=yes
+RestrictSUIDSGID=yes
+SystemCallArchitectures=native
+SystemCallFilter=@system-service
+SystemCallFilter=~@privileged @resources
+
+[Install]
+WantedBy=multi-user.target
diff --git a/notify-online.sh b/notify-online.sh
new file mode 100644
index 0000000..24fa5e3
--- /dev/null
+++ b/notify-online.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -- \
+    -F "hostname=$(hostname -f)" \
+    -F 'sshkeys=<-;type=text/plain'
+
+fw_cfg=/sys/firmware/qemu_fw_cfg/by_name/opt/dch/cfg-branch/raw
+if [ -r "${fw_cfg}" ]; then
+    set -- "$@" -F branch="$(cat "${fw_cfg}")"
+fi
+
+cat /etc/ssh/ssh_host_*_key.pub \
+    | curl -fsS https://webhooks.pyrocufflink.blue/host/online "$@"