[SSUS] Start work on the satellite server upgrade script

1 files changed, 67 insertions, 0 deletions

diff --git a/satellit_upgrader/installer.template.sh b/satellit_upgrader/installer.template.sh
new file mode 100755
index 0000000..e5bdd75
--- /dev/null
+++ b/satellit_upgrader/installer.template.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+# Use special param to make sure we're running under bash (in case user does "sh install.sh")
+[ "x$1" != "x--exec-self" ] && exec /bin/bash "$0" --exec-self "$@"
+
+IGNORE_ERRORS=
+while [ $# -gt 0 ]; do
+	[ "x$1" = "x--ignore-errors" ] && IGNORE_ERRORS=jup
+	shift
+done
+
+declare -rg SELFPID=$$
+perror () {
+	if [ -n "$IGNORE_ERRORS" ]; then
+		echo "[ERROR] $@"
+		return 0
+	fi
+	echo "[FATAL] $@"
+	[ "$$" != "$SELFPID" ] && kill "$SELFPID"
+	exit 1
+}
+
+if [ "$UID" != "0" ]; then
+	perror "Must be running as root"
+fi
+
+# ** Extract value from text file containing key=value pairs
+extractfield () {
+	grep -m1 "^\s*$2\b" "$1" | awk -F '=' '{print $2}' | sed 's/\s//g'
+}
+
+# ** Wrap mysql command line client so we're always using the deb-sys-maint credentials
+mysql () {
+	"$(which mysql)" --defaults-extra-file=/etc/mysql/debian.cnf --default-character-set=utf8 "$@"
+}
+
+# ** Constants - to be patched by the packaging script
+declare -rg TARGET_WEBIF_VERSION="%TARGET_WEBIF_VERSION%"
+declare -rg PAYLOAD_OFFSET="%PAYLOAD_OFFSET%"
+
+# ** Check if constants have been filled, bail out otherwise
+if [ -z "$TARGET_WEBIF_VERSION" ] || [[ "$TARGET_WEBIF_VERSION" == %*% ]]; then
+	perror "Bad upgrader: TARGET_WEBIF_VERSION not set"
+fi
+if [ -z "$PAYLOAD_OFFSET" ] || [[ "$PAYLOAD_OFFSET" == %*% ]]; then
+	perror "Bad upgrader: PAYLOAD_OFFSET not set"
+fi
+
+# **********************************************************
+
+# Get current webif version
+declare -rg CURRENT_WEBIF_VERSION=$(mysql -e 'SELECT value FROM openslx.property WHERE name = "webif-version" LIMIT 1')
+[ -z "$CURRENT_WEBIF_VERSION" ] && perror "Could not determine current webif version"
+[ "$CURRENT_WEBIF_VERSION" -le "$TARGET_WEBIF_VERSION" ] || perror "This update seems to be older than the server version you're currently running"
+
+# Extract payload
+TMPDIR=$(mktemp -d)
+[ -z "$TMPDIR" ] && perror "Could not create temporary directory for installer"
+dd "bs=$PAYLOAD_OFFSET" "if=$0" skip=1 | tar -z -x -C "$TMPDIR"
+RET=$?
+[ "$RET" -ne 0 ] && perror "Extracting installer payload failed with exit code $RET"
+
+
+# File end
+exit 0
+# Payload to follow
+