Make get.sh more usable as a package builder

Add package.sh script as a wrapper for get.sh that sets necessary
envvars.

dist/install.sh

@@ -7,6 +7,9 @@ if [ -z "$FAIL2BANDIR" ]; then
     FAIL2BANDIR=/etc/fail2ban
 fi
 
+script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd $script_dir
+
 install -Dm 0644 -t "$PREFIX/share/vim/vimfiles/ftdetect/" vim/ftdetect/maddy-conf.vim
 install -Dm 0644 -t "$PREFIX/share/vim/vimfiles/ftplugin/" vim/ftplugin/maddy-conf.vim
 install -Dm 0644 -t "$PREFIX/share/vim/vimfiles/syntax/" vim/syntax/maddy-conf.vim

get.sh

@@ -20,6 +20,9 @@ fi
 if [ "$SUDO" == "" ]; then
     SUDO=sudo
 fi
+if [ "$NO_RUN" == "" ]; then
+    NO_RUN=0
+fi
 
 export CGO_CFLAGS="-g -O2 -D_FORTIFY_SOURCE=2 $CFLAGS"
 export CGO_CXXFLAGS="-g -O2 -D_FORTIFY_SOURCE=2 $CXXFLAGS"
@@ -97,13 +100,9 @@ install_executables() {
 install_dist() {
     echo 'Installing dist files...' >&2
 
-    pushd "`source_dir`/dist" >/dev/null
-    $SUDO ./install.sh
-    popd >/dev/null
+    $SUDO "`source_dir`/dist/install.sh"
 
     $SUDO sed -Ei "s!/usr/bin!$PREFIX/bin!g" "$SYSTEMDUNITS/system/maddy.service" "$SYSTEMDUNITS/system/maddy@.service"
-
-    $SUDO systemctl daemon-reload
 }
 
 install_man() {
@@ -122,14 +121,14 @@ install_man() {
 
     echo 'Installing man pages...' >&2
     for f in `source_dir`/man/*.1.scd; do
-        scdoc < "$f" | gzip > tmp.gz
-        $SUDO install -Dm 0644 tmp.gz "$PREFIX/share/man/man1"
+        scdoc < "$f" | gzip > /tmp/maddy-tmp.gz
+        $SUDO install -Dm 0644 /tmp/maddy-tmp.gz "$PREFIX/share/man/man1/`basename -s .scd $f`.gz"
     done
     for f in `source_dir`/man/*.5.scd; do
-        scdoc < "$f" | gzip > tmp.gz
-        $SUDO install -Dm 0644 tmp.gz "$PREFIX/share/man/man5"
+        scdoc < "$f" | gzip > /tmp/maddy-tmp.gz
+        $SUDO install -Dm 0644 /tmp/maddy-tmp.gz "$PREFIX/share/man/man5/`basename -s .scd $f`.gz"
     done
-    rm tmp.gz
+    rm /tmp/maddy-tmp.gz
 
 }
 
@@ -144,19 +143,22 @@ install_config() {
     if ! [ -e "$CONFPATH" ]; then
         echo 'Installing default configuration...' >&2
 
-        cp "`source_dir`/maddy.conf" .
+        install "`source_dir`/maddy.conf" /tmp/maddy.conf
 
         host=`hostname`
+        set +e # premit to fail
         read -p "What's your domain, btw? [$host] > " DOMAIN
+        set -e
         if [ "$DOMAIN" = "" ]; then
             DOMAIN=$host
         fi
         echo 'Good, I will put that into configuration for you.' >&2
 
-        sed -Ei "s/^\\$\\(primary_domain\) = .+$/$\(primary_domain\) = $DOMAIN/" maddy.conf
-        sed -Ei "s/^\\$\\(hostname\) = .+$/$\(hostname\) = $DOMAIN/" maddy.conf
+        sed -Ei "s/^\\$\\(primary_domain\) = .+$/$\(primary_domain\) = $DOMAIN/" /tmp/maddy.conf
+        sed -Ei "s/^\\$\\(hostname\) = .+$/$\(hostname\) = $DOMAIN/" /tmp/maddy.conf
 
-        $SUDO install -Dm 0644 maddy.conf "$CONFPATH"
+        $SUDO install -Dm 0644 /tmp/maddy.conf "$CONFPATH"
+        rm /tmp/maddy.conf
     else
         echo "Configuration already exists in /etc/maddy/maddy.conf, skipping defaults installation." >&2
     fi
@@ -173,6 +175,7 @@ run() {
     install_man
     install_config
     create_user
+    $SUDO systemctl daemon-reload
 
     echo "Okay, almost ready." >&2
     echo "It's up to you to figure out TLS certificates and DNS stuff, though." >&2
@@ -180,4 +183,6 @@ run() {
     echo "https://github.com/foxcpp/maddy/wiki/Tutorial:-Setting-up-a-mail-server-with-maddy" >&2
 }
 
-run
+if [ "$NO_RUN" != "1" ]; then
+    run
+fi

package.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+# Build maddy using get.sh and copy all installation files into maddy-pkgdir-XXXXXXXXX directory.
+# DO NOT RUN FROM THE SOURCE DIRECTORY. IT WILL BREAK.
+
+script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+if [ "$script_dir" = "$PWD" ]; then
+    echo 'Do not run package.sh from the source directory.' >&2
+    exit 1
+fi
+
+if [ "$pkgdir" = "" ]; then
+    pkgdir=$PWD/maddy-pkgdir-`date +%s`
+    rm -rf $pkgdir
+    mkdir $pkgdir
+fi
+export PREFIX=$pkgdir/usr FAIL2BANDIR=$pkgdir/etc/fail2ban CONFPATH=$pkgdir/etc/maddy/maddy.conf NO_RUN=1 SUDO=fakeroot
+source $script_dir/get.sh
+
+mkdir -p maddy-setup
+cd maddy-setup/
+
+function run() {
+    ensure_go_toolchain
+    download_and_compile
+    install_executables
+    install_dist
+    install_man
+    install_config </dev/null
+}
+
+run