misc: add install-slackware

Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>

misc/install-slackware

@@ -0,0 +1,91 @@
+#!/bin/sh
+
+set -e
+
+mirror="http://mirror.nl.leaseweb.net/slackware/"
+release="slackware64-current"
+url="$mirror/$release/slackware64"
+filelist="$url/FILE_LIST"
+pkgtools="pkgtools-14.1-noarch-2.tgz"
+pkgtoolsurl="$url/a/$pkgtools"
+installdir="/ns/slackware-current"
+tmpdir="/tmp/slackware"
+pkgdir="/tmp/slackware/pkgs"
+
+# a template file is just a plain-text file with a package per line.
+templateurl="http://git.2f30.org/templates/plain/minimal-server.template"
+templatefile="$tmpdir/template"
+
+tar113="$tmpdir/tar-1.13"
+tar113url="http://www.codemadness.nl/downloads/morpheus/slackware/tar-1.13"
+tar113checksum="9f011c843944e03dc56f30f513344ac7f73621da762520370ab4150e26475b1f1f2daec15076fa3e096e78432b51fbc55cda1db66ff7e329b0c6f55d61028d6d  tar-1.13"
+
+mkdir -p "$tmpdir"
+cd "$tmpdir"
+
+# get precompiled tar-1.13 required by installpkg (static x86_64 musl binary).
+if ! test -f "$tar113"; then
+	wget "${tar113url}" -O "$tar113"
+	printf '%s' "$tar113checksum" | sha512sum -c -
+fi
+
+# make sure this tar version is in $PATH and prefered.
+export PATH="${tmpdir}:$PATH"
+chmod "755" "$tar113"
+ln -sf "$tar113" "tar"
+
+# get template of packages to install.
+if ! test -f "$templatefile"; then
+	wget "$templateurl" -O "$templatefile"
+fi
+
+# get pkgtools.
+installpkg="$tmpdir/sbin/installpkg"
+if ! test -f "$pkgtools"; then
+	wget "${pkgtoolsurl}" -O "$tmpdir/$pkgtools"
+fi
+if ! test -f "$installpkg"; then
+	tar -xzf "$tmpdir/$pkgtools"
+fi
+
+# get packages.
+mkdir -p "$pkgdir"
+cd "$pkgdir"
+wget "$filelist" -q -O - | grep -E -o '[^ ]*$' | grep -E '\.(txz|tgz|txt|asc)$' | while read -r line; do
+	pset=$(dirname "$line" | sed 's@[^a-z]*@@g')
+	pfilename=$(basename "$line")
+	# strip version part of name for matching (this should be fine in most cases).
+	pname=$(printf '%s' "${pfilename}" | sed -E 's@^([^-]*-?[a-z]*?)-.+@\1@g')
+	pattern="^${pname}\$"
+
+	if grep -qE "$pattern" "$templatefile"; then
+		mkdir -p "$pset"
+		if ! test -f "$pset/$pfilename"; then
+			wget "$url/$line" -O "$pset/$pfilename"
+		fi
+	fi
+done
+
+# install packages.
+mkdir -p "$installdir"
+#cd "$pkgdir"
+cat "$templatefile" | while read -r line; do
+	f=$(find "." -name "$line-*.t?z" | sed 1q)
+	"$installpkg" --terse --root "$installdir" "$f"
+done
+
+# fix symlink references for libs.
+cd "$installdir/lib64"
+for i in *; do
+    if realpath "$i" | grep -qE '\.incoming$'; then
+        r=$(basename "$(realpath "$i" | sed -E 's@\.incoming$@@')")
+        if test -L "$i"; then
+            ln -sf "$r" "$i"
+        fi
+    fi
+done
+
+# copy /etc/resolv.conf
+mkdir -p "${installdir}/etc"
+cp /etc/resolv.conf "${installdir}/etc/resolv.conf"
+chmod 644 "${installdir}/etc/resolv.conf"