From e2ca8ecd1aee7242eb3d204aa7c8c9a77de0b5b0 Mon Sep 17 00:00:00 2001
From: oneyb <zenlines@gmail.com>
Date: Sat, 23 Jun 2018 16:27:14 +0200
Subject: [PATCH 1/2] made it quicker to retry installation in case something
 goes wrong and remove the burden from the zotero server

---
 zotero_installer.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/zotero_installer.sh b/zotero_installer.sh
index af27aa5..c1e5298 100755
--- a/zotero_installer.sh
+++ b/zotero_installer.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 #
 # Zotero installer
-# Copyright 2011-2013 Sebastiaan Mathot
+# Copyright 2011-2018 Sebastiaan Mathot
 # <http://www.cogsci.nl/>
 #
 # This file is part of qnotero.
@@ -74,7 +74,7 @@ URL="https://download.zotero.org/client/release/${VERSION}/Zotero-${VERSION}_lin
 echo ">>> Downloading Zotero standalone $VERSION for $ARCH"
 echo ">>> URL: $URL"
 
-wget $URL -O $TMP
+[[ ! -f $TMP ]] && wget $URL -O $TMP
 if [ $? -ne 0 ]; then
 	echo ">>> Failed to download Zotero"
 	echo ">>> Aborting installation, sorry!"

From 8364f291c422f058477db99792a975aa24453394 Mon Sep 17 00:00:00 2001
From: oneyb <zenlines@gmail.com>
Date: Thu, 28 Jun 2018 12:09:58 +0200
Subject: [PATCH 2/2] added file integrity checker depending on sha256 hashes

---
 zotero_installer.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/zotero_installer.sh b/zotero_installer.sh
index af27aa5..f5639a2 100755
--- a/zotero_installer.sh
+++ b/zotero_installer.sh
@@ -22,8 +22,10 @@
 VERSION="5.0.48"
 if [ `uname -m` == "x86_64" ]; then
 	ARCH="x86_64"
+  VERSION_SHA256_HASH=7cb871894f1de168c0e486d2d48fc8524d23453198a2b834c23d958abd63443d
 else
 	ARCH="i686"
+  VERSION_SHA256_HASH=24f66641bc0bebc9e7e1414bdb03050e6fde7d6939307b17afc3d1f349d5646d
 fi
 TMP="/tmp/zotero.tar.bz2"
 DEST_FOLDER=zotero
@@ -80,6 +82,14 @@ if [ $? -ne 0 ]; then
 	echo ">>> Aborting installation, sorry!"
 	exit 1
 fi
+# Check integrity
+
+NEW_HASH=$(sha256sum $TMP | awk '{print $1}')
+if [ $VERSION_SHA256_HASH != $NEW_HASH ]; then
+  echo ">>> Zotero download file corrupted"
+	echo ">>> Aborting installation, sorry!"
+	exit 1
+fi
 
 if [ -d $DEST/$DEST_FOLDER ]; then
 	echo ">>> The destination folder ($DEST/$DEST_FOLDER) exists. Do you want to remove it?"