prettied up installer output

README.md

@@ -1,19 +1,99 @@
-pve-nag-buster  
+# pve-nag-buster 
-Persistent license nag removal for Proxmox VE 5.x
+https://github.com/foundObjects/pve-nag-buster
 
-A bash script and dpkg pre/post install hooks to persistently remove the license nags from Proxmox VE 5.x.
+This is a dpkg post install hook script that persistently removes license nags
+from Proxmox VE 5.x and up. Install it once and you won't see another license
+nag until Proxmox changes their web-ui code significantly.
 
-The main script does two things: it removes the "unlicensed node" popup nag from the web gui and it switches repositories from pve-enterprise to pve-no-subscription. The script is called every time a package updates the web gui or the
+Please support the Proxmox team by [buying a subscription](https://www.proxmox.com/en/proxmox-ve/pricing) if it's within your
-pve-enterprise source list and will only run if packages containing those files are changed. There are no external dependencies beyond the base packages installed with PVE by default (awk, sed, grep, wget).
+means. High quality open source software like Proxmox needs our support!
 
-For your convenience the install script also contains a base64 encoded copy of pve-nag-buster.sh for use offline. I'd have just packed everything into install.sh by default but making everyone download, unxz and base64 decode a HEREDOC to look at my code seemed rude.
+### How does it work?
 
-To install: 
+The included hook script removes the "unlicensed node" popup nag from the web
+gui and disables the pve-enterprise repository list. This script is called
+every time a package updates the web gui or the pve-enterprise source list and
+will only run if packages containing those files are changed. The installer
+drops the hook script and creates dpkg hooks to call it then adds the
+pve-no-subscription repo list. There are no external dependencies beyond the
+base packages installed with PVE by default (awk, sed, grep, wget).
 
+### Installation
 ```
 wget https://raw.githubusercontent.com/foundObjects/pve-nag-buster/master/install.sh
-# Read the script
+# Always read scripts downloaded from the internet before running them with sudo
-chmod +x install.sh && ./install.sh
+chmod +x install.sh && sudo ./install.sh
 ```
 
+With Git:
+```
+git clone https://github.com/foundObjects/pve-nag-buster.git
+# Always read scripts downloaded from the internet before running them with sudo
+cd pve-nag-buster && sudo ./install.sh
+```
+
+### Uninstall:
+```
+./install.sh --uninstall
+# remove /etc/apt/sources.list.d/pve-no-subscription.list if desired
+```
+
+### Notes:
+#### Why is there base64 in my peanut-butter?
+
+For convenience the install script also contains a base64 encoded copy of the
+hook script, this makes installation possible without access to github or a
+full clone of the project directory.
+
+To inspect the base64 encoded script run `./install.sh --emit`; this dumps the
+encoded copy to stdout and quits. To install using the stored copy just run
+`sudo ./install.sh --offline`, no internet required.
+
+#### Git repo history
+
+Sorry to all 5 of you who forked the repo before about 2020-01-20; I rewrote
+git history to cleanup the commit noise from adding files through GitHub's web
+UI.
+
+If you need to sync a cloned repo with the new history and haven't made any
+changes:
+
+```
+git fetch --all -p -P
+git push -f . origin/master:master
+```
+
+If you've made changes to the code:
+
+Migrating to the new master branch should be fairly straightforward, the v02
+tag repo state in the new commit history is identical to the repo state before
+the rebase.
+
+```
+# save and commit your work
+git commit -a -m "WIP"
+
+# make a backup of your branch Just In Case™
+git checkout -b backup
+git checkout -
+
+git fetch --all
+git rebase -f --onto v02 origin/old-master <your branch here>
+```
+
+I highly recommend picking at least the following bugfix commits if you don't
+want to track new work in master, they fix a couple of potential problems.
+
+* a260891 hook script: fixed grep test issue
+* 427b23b more reliable hook trigger removal
+
+### Credits:
+
+Thanks to John McLaren for his [blog post](https://www.reddit.com/user/seaqueue) documenting the web gui patch:
+
+### Contact:
+
+[Open an issue](https://github.com/foundObjects/pve-nag-buster/issues) on GitHub or contact me as [/u/SeaQueue on Reddit](https://www.reddit.com/user/seaqueue).
+
 Please get in touch if you find a way to improve anything, otherwise enjoy!
+

install.sh

@@ -1,9 +1,10 @@
-#!/bin/bash
+#!/bin/sh
+case "$(readlink /proc/$$/exe)" in */bash) set -euo pipefail ;; *) set -eu ;; esac
 
-# pve-nag-buster (v02) https://github.com/foundObjects/pve-nag-buster
+# pve-nag-buster (v03) https://github.com/foundObjects/pve-nag-buster
 # Copyright (C) 2019 /u/seaQueue (reddit.com/u/seaQueue)
 #
-# Removes Proxmox VE 5.x license nags automatically after updates
+# Removes Proxmox VE 5.x+ license nags automatically after updates
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -19,72 +20,157 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
+# ensure a predictable environment
+PATH=/usr/sbin:/usr/bin:/sbin:/bin
+\unalias -a
+
+# installer main body:
+_main() {
+  # ensure $1 exists so 'set -u' doesn't error out
+  { [ "$#" -eq "0" ] && set -- ""; } > /dev/null 2>&1
+
+  case "$1" in
+    "--emit")
+      # call the emit_script() function to stdout and exit, use this to verify
+      # that the base64 encoded script below isn't doing anything malicious
+      # does not require root
+      emit_script
+      ;;
+    "--uninstall")
+      # uninstall, requires root
+      assert_root
+      _uninstall
+      ;;
+    "--install" | "--offline" | "")
+      # install dpkg hooks, requires root
+      assert_root
+      _install "$@"
+      ;;
+    *)
+      # unknown flags, print usage and exit
+      _usage
+      ;;
+  esac
+  exit 0
+}
+
+_uninstall() {
+  set -x
+  [ -f "/etc/apt/apt.conf.d/86pve-nags" ] &&
+    rm -f "/etc/apt/apt.conf.d/86pve-nags"
+  [ -f "/usr/share/pve-nag-buster.sh" ] &&
+    rm -f "/usr/share/pve-nag-buster.sh"
+
+  echo "Script and dpkg hooks removed, please manually remove /etc/apt/sources.list.d/pve-no-subscription.list if desired"
+}
+
+_install() {
+  # create hooks and no-subscription repo list, install hook script, run once
+
+  VERSION_CODENAME=''
+  ID=''
+  . /etc/os-release
+  case "$ID" in
+    "debian")
+      if [ -n "$VERSION_CODENAME" ]; then
+        RELEASE="$VERSION_CODENAME"
+      else
         RELEASE=$(awk -F"[)(]+" '/VERSION=/ {print $2}' /etc/os-release)
+      fi
+      ;;
+    #"ubuntu") # it doesn't look like this is possible anymore
+    #  ;;
+    *)
+      echo "Sorry, I don't know how to handle your Linux distribution '$ID'"
+      exit 1
+      ;;
+  esac
 
   # create the pve-no-subscription list
-
+  echo "Creating PVE no-subscription repo list ..."
-echo "$0: Creating PVE no-subscription repo list ..."
+  cat <<- EOF > "/etc/apt/sources.list.d/pve-no-subscription.list"
-cat <<EOF>"/etc/apt/sources.list.d/pve-no-subscription.list"
+	# .list file automatically generated by pve-nag-buster at $(date)
-# .list file automatically generated by pve-nag-buster:$0 at $(date)
 	#
-# If $0 is run again this file will likely be overwritten
+	# If pve-nag-buster is installed again this file will be overwritten
 	#
 
 	deb http://download.proxmox.com/debian/pve $RELEASE pve-no-subscription
 	EOF
 
   # create dpkg pre/post install hooks for persistence
-
+  echo "Creating dpkg hooks in /etc/apt/apt.conf.d ..."
-cat <<'EOF' >/etc/apt/apt.conf.d/86pve-nags
+  cat <<- 'EOF' > "/etc/apt/apt.conf.d/86pve-nags"
 	DPkg::Pre-Install-Pkgs {
 	    "while read -r pkg; do case $pkg in *proxmox-widget-toolkit* | *pve-manager*) touch /tmp/.pve-nag-buster && exit 0; esac done < /dev/stdin";
 	};
 
 	DPkg::Post-Invoke {
-    "[ -f /tmp/.pve-nag-buster ] && /usr/share/pve-nag-buster.sh && rm -f /tmp/.pve-nag-buster; exit 0";
+	    "[ -f /tmp/.pve-nag-buster ] && { /usr/share/pve-nag-buster.sh; rm -f /tmp/.pve-nag-buster; }; exit 0";
 	};
 	EOF
 
-# fetch the post-install patch script, patches license nag and switches to pve-no-subscription repository as needed
+  # install the hook script
-
+  temp=''
-if true ; then
+  if [ "$1" = "--offline" ]; then
+    # packed script requested
+    temp="$(mktemp)" && trap "rm -f $temp" EXIT
+    emit_script > "$temp"
+  elif [ -f "pve-nag-buster.sh" ]; then
+    # local copy available
+    temp="pve-nag-buster.sh"
+  else
+    # fetch from github
+    echo "Fetching hook script from GitHub ..."
+    tempd="$(mktemp -d)" &&
+      trap "echo 'Cleaning up temporary files ...'; rm -f $tempd/*; rmdir $tempd" EXIT
+    temp="$tempd/pve-nag-buster.sh"
     wget https://raw.githubusercontent.com/foundObjects/pve-nag-buster/master/pve-nag-buster.sh \
-      -O "/usr/share/pve-nag-buster.sh" && \
+      -q --show-progress -O "$temp"
-      chmod +x "/usr/share/pve-nag-buster.sh" && \
+  fi
+  echo "Installing hook script as /usr/share/pve-nag-buster.sh"
+  install -o root -m 0550 "$temp" "/usr/share/pve-nag-buster.sh"
+
+  echo "Running patch script"
   /usr/share/pve-nag-buster.sh
 
-  exit 0
+  return 0
-fi
+}
 
-# this is the end, example offline code below
+# emit a stored copy of pve-nag-buster.sh offline -- this is intended to be used during
+# offline provisioning where we don't have access to github or a full cloned copy of the
+# project
 
-# Example code for inclusion into host provisioning scripts offline: this is just pve-nag-buster.sh
+# run 'install.sh --emit' to dump stored script to stdout
-# run through "xz -z -9 -c pve-nag-buster.sh | base64" to avoid needing to fetch the script from github
-# To use this installer offline just nuke the entire if block above.
 
 # Important: if you're not me you should probably decode this and read it to make sure I'm not doing
 #            something malicious like mining dogecoin or stealing your valuable cat pictures
 
-# pve-nag-buster.sh (v02) inline:
+# pve-nag-buster.sh (v03) encoded below:
 
-base64 -d <<"YEET"| unxz > "/usr/share/pve-nag-buster.sh" && \
+emit_script() {
-    chmod +x "/usr/share/pve-nag-buster.sh" && \
+  base64 -d << 'YEET' | unxz
-    /usr/share/pve-nag-buster.sh
+/Td6WFoAAATm1rRGAgAhARwAAAAQz1jM4AX2A4pdABGIQkY99BY0cwoNj8U0dcgowbs41qLC+aej
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+Iv1jMe8GbydGG6vzOkzowGdOdYaktPn595lEAhwqSPgRwvBth+1x/gWiHhycK0ggFWUpclYOM3WH
-0jL6dBem+gT6v/jHIyxuRUCz6Rjxcj4IqTfjpuiQMvFoKmqhW/H+jLbYqbSgkyhOagAWGvOzGqg/
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+ldyo8h7NOqf3Zg8BZydHQQ7zxUDXEHaDEhihpx+fYLuDnSdYT401yoXXQIGeWrbUEE4zazNRYngl
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-W7I/JpcDcABnxx6Y5xVgFDct7+xInHfC20EqN9H3p9PEotoUodAy8UckeQRo4RvQCKdKF6GUx3gt
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-YaNlele6TN/8HU65WEjUrLAGm98+cl4DdYyuEnOmJTEDUmb047/bftabhnWzfKwL0UQ4OWj5GAAA
+JtcdlRcbL5rHN9C5PNOpCqcEeRDmVsS0sgAAAMwFRS7YkAXGAAGmB/cLAADBO9SpscRn+wIAAAAA
-95IH9OjVadkAAYsHwwsAAN9Cr22xxGf7AgAAAAAEWVo=
+BFla
 YEET
+}
+
+assert_root() { [ "$(id -u)" -eq '0' ] || { echo "This action requires root." && exit 1; }; }
+_usage() { echo "Usage: $(basename "$0") (--emit|--offline|--uninstall)"; }
+
+_main "$@"

make-release.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+_VERS="v03"
+_BRANCH=$(git branch --show-current) >/dev/null 2>&1  ||
+  { echo "can't poll branch, defaulting to master" && _BRANCH="master"; }
+
+# update versions before packing install.sh
+sed -i -r \
+  -e "s;\(v[[:digit:]][[:digit:]].?\);\($_VERS\);" \
+  -e "s;(nag-buster/).*(/(pve-nag-buster|install)\.sh);\1$_BRANCH\2;" \
+  pve-nag-buster.sh install.sh README.md
+
+# TODO there's probably a two liner to handle all of this in awk:
+
+# pack install.sh
+{
+  head -n"$(grep -n "<< 'YEET'" install.sh | cut -d: -f1)" install.sh
+  xz -z -9 -c pve-nag-buster.sh | base64
+  tail -n+"$(grep -n '^YEET$' install.sh | cut -d: -f1)" install.sh
+} > foofile
+cat foofile > install.sh
+rm -f foofile
+

pve-nag-buster.sh

@@ -1,9 +1,9 @@
-#!/bin/bash
+#!/bin/sh
 #
-# pve-nag-buster.sh (v02) https://github.com/foundObjects/pve-nag-buster
+# pve-nag-buster.sh (v03) https://github.com/foundObjects/pve-nag-buster
 # Copyright (C) 2019 /u/seaQueue (reddit.com/u/seaQueue)
 #
-# Removes Proxmox VE 5.x license nags automatically after updates
+# Removes Proxmox VE 5.x+ license nags automatically after updates
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -21,11 +21,12 @@
 
 NAGTOKEN="data.status !== 'Active'"
 NAGFILE="/usr/share/javascript/proxmox-widget-toolkit/proxmoxlib.js"
+SCRIPT="$(basename $0)"
 
 # disable license nag: https://johnscs.com/remove-proxmox51-subscription-notice/
 
-if $(grep -q "$NAGTOKEN" "$NAGFILE") ; then
+if grep -qs "$NAGTOKEN" "$NAGFILE" > /dev/null 2>&1; then
-	echo "$0: Removing Nag ..."
+  echo "$SCRIPT: Removing Nag ..."
   sed -i.orig "s/$NAGTOKEN/false/g" "$NAGFILE"
   systemctl restart pveproxy.service
 fi
@@ -35,6 +36,6 @@ fi
 PAID_BASE="/etc/apt/sources.list.d/pve-enterprise"
 
 if [ -f "$PAID_BASE.list" ]; then
-	echo "$0: Disabling PVE paid repo list ..."
+  echo "$SCRIPT: Disabling PVE paid repo list ..."
   mv -f "$PAID_BASE.list" "$PAID_BASE.disabled"
 fi

src/install

@@ -1,72 +0,0 @@
-#!/bin/bash
-
-# pve-nag-buster (__VERSION__) https://github.com/foundObjects/pve-nag-buster
-# Copyright (C) 2019 /u/seaQueue (reddit.com/u/seaQueue)
-#
-# Removes Proxmox VE 5.x license nags automatically after updates
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-
-RELEASE=$(awk -F"[)(]+" '/VERSION=/ {print $2}' /etc/os-release)
-
-# create the pve-no-subscription list
-
-echo "$0: Creating PVE no-subscription repo list ..."
-cat <<EOF>"/etc/apt/sources.list.d/pve-no-subscription.list"
-# .list file automatically generated by pve-nag-buster:$0 at $(date)
-#
-# If $0 is run again this file will likely be overwritten
-#
-
-deb http://download.proxmox.com/debian/pve $RELEASE pve-no-subscription
-EOF
-
-# create dpkg pre/post install hooks for persistence
-
-cat <<'EOF' >/etc/apt/apt.conf.d/86pve-nags
-DPkg::Pre-Install-Pkgs {
-    "while read -r pkg; do case $pkg in *proxmox-widget-toolkit* | *pve-manager*) touch /tmp/.pve-nag-buster && exit 0; esac done < /dev/stdin";
-};
-
-DPkg::Post-Invoke {
-    "[ -f /tmp/.pve-nag-buster ] && /usr/share/pve-nag-buster.sh && rm -f /tmp/.pve-nag-buster; exit 0";
-};
-EOF
-
-# fetch the post-install patch script, patches license nag and switches to pve-no-subscription repository as needed
-
-if true ; then
-  wget https://raw.githubusercontent.com/foundObjects/pve-nag-buster/master/pve-nag-buster.sh \
-      -O "/usr/share/pve-nag-buster.sh" && \
-      chmod +x "/usr/share/pve-nag-buster.sh" && \
-      /usr/share/pve-nag-buster.sh
-
-  exit 0
-fi
-
-# this is the end, example offline code below
-
-# Example code for inclusion into host provisioning scripts offline: this is just pve-nag-buster.sh
-# run through "xz -z -9 -c pve-nag-buster.sh | base64" to avoid needing to fetch the script from github
-# To use this installer offline just nuke the entire if block above.
-
-# Important: if you're not me you should probably decode this and read it to make sure I'm not doing
-#            something malicious like mining dogecoin or stealing your valuable cat pictures
-
-# pve-nag-buster.sh (__VERSION__) inline:
-
-base64 -d <<"YEET"| unxz > "/usr/share/pve-nag-buster.sh" && \
-    chmod +x "/usr/share/pve-nag-buster.sh" && \
-    /usr/share/pve-nag-buster.sh

src/make-scripts.sh

@@ -1,13 +0,0 @@
-#!/bin/bash
-
-_VERS="v02"
-
-_OUTFILE="pve-nag-buster.sh"
-
-sed "s/__VERSION__/$_VERS/g" src/script > $_OUTFILE
-
-_OUTFILE="install.sh"
-
-sed "s/__VERSION__/$_VERS/g" src/install > $_OUTFILE
-xz -z -9 -c pve-nag-buster.sh | base64 >> $_OUTFILE
-echo "YEET" >> $_OUTFILE

src/script

@@ -1,40 +0,0 @@
-#!/bin/bash
-#
-# pve-nag-buster.sh (__VERSION__) https://github.com/foundObjects/pve-nag-buster
-# Copyright (C) 2019 /u/seaQueue (reddit.com/u/seaQueue)
-#
-# Removes Proxmox VE 5.x license nags automatically after updates
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-
-NAGTOKEN="data.status !== 'Active'"
-NAGFILE="/usr/share/javascript/proxmox-widget-toolkit/proxmoxlib.js"
-
-# disable license nag: https://johnscs.com/remove-proxmox51-subscription-notice/
-
-if $(grep -q "$NAGTOKEN" "$NAGFILE") ; then
-	echo "$0: Removing Nag ..."
-	sed -i.orig "s/$NAGTOKEN/false/g" "$NAGFILE"
-	systemctl restart pveproxy.service
-fi
-
-# disable paid repo list
-
-PAID_BASE="/etc/apt/sources.list.d/pve-enterprise"
-
-if [ -f "$PAID_BASE.list" ]; then
-	echo "$0: Disabling PVE paid repo list ..."
-	mv -f "$PAID_BASE.list" "$PAID_BASE.disabled"
-fi