#!/bin/sh
# https://wiki.itcollege.ee/index.php/Shebang

# muutujad
local=/shared/ISO/ubuntu
server=https://upload.itcollege.ee/edmund/iso/ubuntu/22-04-1

# laadime vajalikud failid õigete nimedega õigesse asukohta alla
wget -q --show-progress $server/ubuntu-22.04.1-desktop-amd64.iso -O $local/ubuntu-22.04.1-desktop-amd64.iso
wget -q --show-progress $server/ubuntu-mate-22.04.1-desktop-amd64.iso -O $local/ubuntu-mate-22.04.1-desktop-amd64.iso
wget -q --show-progress $server/SHA256SUMS-ubuntu-mate -O $local/SHA256SUMS-ubuntu-mate
wget -q --show-progress $server/SHA256SUMS-ubuntu-mate.gpg -O $local/SHA256SUMS-ubuntu-mate.gpg
wget -q --show-progress $server/SHA256SUMS-ubuntu-desktop-server -O $local/SHA256SUMS-ubuntu-desktop-server
wget -q --show-progress $server/SHA256SUMS-ubuntu-desktop-server.gpg -O $local/SHA256SUMS-ubuntu-desktop-server.gpg

# impordime vajalikud võtmed
gpg --keyid-format long --keyserver hkp://keyserver.ubuntu.com --recv-keys 0x46181433FBB75451 0xD94AA3F0EFE21092

# automatiseeritult kõikide võtmete täielik usaldamine
for i in `gpg --list-keys --with-colons --fingerprint | sed -n 's/^fpr:::::::::\([[:alnum:]]\+\):/\1/p'` ; do printf "trust\n5\ny\nquit" | gpg -q --no-tty --command-fd 0 --status-fd 2 --expert --edit-key $i 2>/dev/null 1>/dev/null ; done

# imporditud võtmete vaatamine
# gpg --keyid-format long --list-keys --with-fingerprint 0x46181433FBB75451 0xD94AA3F0EFE21092

# GPG-allkirja (usaldusväärsuse) kontrollimine
gpg --keyid-format long --verify $local/SHA256SUMS-ubuntu-desktop-server.gpg $local/SHA256SUMS-ubuntu-desktop-server
gpg --keyid-format long --verify $local/SHA256SUMS-ubuntu-mate.gpg $local/SHA256SUMS-ubuntu-mate

# kontrollsumma kontrollimine
cd $local
sha256sum -c SHA256SUMS-ubuntu-desktop-server --ignore-missing 2>&1 | grep OK
sha256sum -c SHA256SUMS-ubuntu-mate --ignore-missing 2>&1 | grep OK