Add script used to build and update website

_build/update_torrent.sh

@@ -0,0 +1,122 @@
+#!/bin/bash
+
+# This file is licensed under the MIT License (MIT) available on
+# http://opensource.org/licenses/MIT.
+
+SAVEIFS=$IFS
+IFS=$(echo -en "\n\b")
+
+BINDIR='/var/www/bin'
+DATADIR='/bitcoin.org/torrent'
+PREFIX='bitcoin-core-'
+
+# Stop script in case a single command fails
+set -e
+
+# Create last hash file if it doesn't exist.
+if [[ ! -e $DATADIR/lasthash ]]; then
+	touch $DATADIR/lasthash
+fi
+
+# Find latest version.
+version=''
+for f in `find "$BINDIR" -maxdepth 1 ! -path "$BINDIR"`; do
+
+	f=${f##*/}
+	
+	# Ignore directories that don't end with a version number.
+	if [[ $f =~ [^0-9]$ ]]; then
+		continue
+	fi
+
+	# Isolate version number.
+	f="${f/$PREFIX/}"
+
+	version="$(echo "$version $f" | tr " " "\n" | sort -V | tail -n 1)"
+
+done
+
+# Get current last modification time for the torrent.
+lasttorrenttime=0
+if [[ -e "$BINDIR/$PREFIX$version/bitcoin-$version.torrent" ]]; then
+	lasttorrenttime=`stat -c%Y "$BINDIR/$PREFIX$version/bitcoin-$version.torrent"`
+fi
+
+# Get current last modification time for binary files.
+lastfilestime=0
+for f in `find "$BINDIR/$PREFIX$version" -maxdepth 1 ! -path "$BINDIR/$PREFIX$version"`; do
+
+	f=${f##*/}
+
+	# Ignore torrent file and directories.
+	if [[ $f =~ \.torrent$ || -d "$BINDIR/$PREFIX$version/$f" ]]; then
+		continue
+	fi
+
+	time=`stat -c%Y "$BINDIR/$PREFIX$version/$f"`
+	if [[ $time > $lastfilestime ]]; then
+		lastfilestime=$time
+	fi
+
+done
+
+# Abort if directory is empty.
+if [[ $lastfilestime == 0 ]]; then
+	exit
+fi
+
+# Get last version and combined hash for binary files.
+lasthash=`cat $DATADIR/lasthash`
+
+# Abort if binary files have been modified in the last minute.
+lastminute=`date +%s`
+lastminute=$[lastminute-60]
+if [[ $lastfilestime > $lastminute ]]; then
+	exit
+fi
+
+# Abort if torrent file exists, version is unchanged and binary files are unchanged.
+if [[ -e "$BINDIR/$PREFIX$version/bitcoin-$version.torrent" && $lasthash == "$version;"* && $lasttorrenttime > $lastfilestime ]]; then
+	exit
+fi
+
+# Get current combined hash for binary files.
+currenthash="$version;"
+for f in `find "$BINDIR/$PREFIX$version" -maxdepth 1 ! -path "$BINDIR/$PREFIX$version" | sort -V`; do
+	f=${f##*/}
+	if [[ $f =~ \.torrent$ || -d "$BINDIR/$PREFIX$version/$f" ]]; then
+		continue
+	fi
+	currenthash="$currenthash$f:`sha256sum "$BINDIR/$PREFIX$version/$f" | cut -d " " -f1`;"
+done
+
+# Update torrent modification time and abort if files are unchanged.
+if [[ $currenthash == $lasthash && -e "$BINDIR/$PREFIX$version/bitcoin-$version.torrent" ]]; then
+	touch "$BINDIR/$PREFIX$version/bitcoin-$version.torrent"
+	exit
+fi
+
+# Save previous torrent file.
+if [[ -e "$BINDIR/$PREFIX$version/bitcoin-$version.torrent" ]]; then
+	n=0
+	while [[ -e $DATADIR/bitcoin-$version.torrent.$n ]]; do
+		n=$[n+1]
+	done
+	mv "$BINDIR/$PREFIX$version/bitcoin-$version.torrent" "$DATADIR/bitcoin-$version.torrent.$n"
+fi
+
+# Copy files non-recursively to temporary directory.
+tmpdir=`mktemp -d`
+rsync -rt -f '- /*/' --delete "$BINDIR/$PREFIX$version/" "$tmpdir/$PREFIX$version/"
+
+# Build new torrent file.
+buildtorrent -a "udp://tracker.openbittorrent.com:80/announce" -A "udp://tracker.openbittorrent.com:80/announce,udp://tracker.publicbt.com:80/announce,udp://tracker.ccc.de:80/announce,udp://tracker.coppersurfer.tk:6969,udp://open.demonii.com:1337" -w "https://bitcoin.org/bin/" -D -C "$tmpdir/$PREFIX$version" "$BINDIR/$PREFIX$version/bitcoin-$version.torrent"
+
+# Update last combined hash and version.
+echo $currenthash > $DATADIR/lasthash
+
+# Delete temporary directory
+rm -R "$tmpdir"
+
+# Reset IFS.
+IFS=$SAVEIFS