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Diffstat (limited to 'scripts/rankmirrors.sh.in')
| -rw-r--r-- | scripts/rankmirrors.sh.in | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/scripts/rankmirrors.sh.in b/scripts/rankmirrors.sh.in new file mode 100644 index 00000000..d5cbaddd --- /dev/null +++ b/scripts/rankmirrors.sh.in @@ -0,0 +1,202 @@ +#!/bin/bash +# +# rankmirrors - read a list of mirrors from a file and rank them by speed +# @configure_input@ +# +# Copyright (c) 2009 Matthew Bruenig <matthewbruenig@gmail.com> +# +# 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 3 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, see <http://www.gnu.org/licenses/>. + +# traps interrupt key to spit out pre-interrupt info +trap finaloutput INT + +usage() { + echo "Usage: rankmirrors [options] MIRRORFILE | URL" + echo + echo "Ranks pacman mirrors by their connection and opening speed. Pacman mirror" + echo "files are located in /etc/pacman.d/. It can also rank one mirror if the URL is" + echo "provided." + echo + echo "Options:" + echo " --version show program's version number and exit" + echo " -h, --help show this help message and exit" + echo " -n NUM number of servers to output, 0 for all" + echo " -t, --times only output mirrors and their response times" + echo " -u, --url test a specific url" + echo " -v, --verbose be verbose in ouptut" + exit 0 +} + +version() { + echo "rankmirrors (pacman) @PACKAGE_VERSION@" + echo "Copyright (c) 2009 Matthew Bruenig <matthewbruenig@gmail.com>." + echo + echo "This is free software; see the source for copying conditions." + echo "There is NO WARRANTY, to the extent permitted by law." + exit 0 +} + +err() { + echo "$1" + exit 1 +} + +# gettime fetchurl (e.g gettime http://foo.com/core/os/i686/core.db.tar.gz) +# returns the fetching time, or timeout, or unreachable +gettime() { + IFS=' ' output=( $(curl -s -m 10 -w "%{time_total} %{http_code}" "$1" -o/dev/null) ) + (( $? == 28 )) && echo timeout && return + (( ${output[1]} >= 400 || ! ${output[1]} )) && echo unreachable && return + echo "${output[0]}" +} + +# getfetchurl serverurl (e.g. getturl http://foo.com/core/os/i686) +# if $repo is in the line, then assumes core +# if $arch is in the line, then assumes $(uname -m) +# returns a fetchurl (e.g. http://foo.com/core/os/i686/core.db.tar.gz) +ARCH="$(uname -m)" +getfetchurl() { + local strippedurl="${1%/}" + + local replacedurl="${strippedurl//'$repo'/core}" + replacedurl="${replacedurl//'$arch'/$ARCH}" + + local tmp="${replacedurl%/*}" + tmp="${tmp%/*}" + + local reponame="${tmp##*/}" + if [[ -z $reponame || $reponame = $replacedurl ]]; then + echo "fail" + else + local fetchurl="${replacedurl}/$reponame@DBEXT@" + echo "$fetchurl" + fi +} + +# This exists to remove the need for a separate interrupt function +finaloutput() { + IFS=$'\n' sortedarray=( $(LC_COLLATE=C printf "%s\n" "${timesarray[@]}" | sort) ) + + # Final output for mirrorfile + numiterator="0" + if [[ $TIMESONLY ]]; then + echo + echo " Servers sorted by time (seconds):" + for line in "${sortedarray[@]}"; do + echo "${line#* } : ${line% *}" + ((numiterator++)) + (( NUM && numiterator >= NUM )) && break + done + else + for line in "${sortedarray[@]}"; do + echo "Server = ${line#* }" + ((numiterator++)) + (( NUM && numiterator >= NUM )) && break + done + fi + exit 0 +} + + +# Argument parsing +[[ $1 ]] || usage +while [[ $1 ]]; do + if [[ ${1:0:2} = -- ]]; then + case "${1:2}" in + help) usage ;; + version) version ;; + times) TIMESONLY=1 ; shift ;; + verbose) VERBOSE=1 ; shift ;; + url) CHECKURL=1; [[ $2 ]] || err "Must specify url."; URL="$2"; shift 2;; + *) err "\`$1' is an invalid argument." + esac + elif [[ ${1:0:1} = - ]]; then + + if [[ ! ${1:1:1} ]]; then + [[ -t 0 ]] && err "Stdin is empty." + IFS=$'\n' linearray=( $(</dev/stdin) ) + STDIN=1 + shift + else + snum=1 + for ((i=1 ; i<${#1}; i++)); do + case ${1:$i:1} in + h) usage ;; + t) TIMESONLY=1 ;; + v) VERBOSE=1 ;; + u) CHECKURL=1; [[ $2 ]] || err "Must specify url."; URL="$2"; snum=2;; + n) [[ $2 ]] || err "Must specify number." ; NUM="$2" ; snum=2;; + *) err "\`-$1' is an invald argument." ;; + esac + done + shift $snum + fi + elif [[ -f $1 ]]; then + FILE="1" + IFS=$'\n' linearray=( $(<$1) ) + [[ $linearray ]] || err "File is empty." + shift + else + err "\`$1' does not exist." + fi +done + +# Some sanity checks +[[ $NUM ]] || NUM=0 +[[ $FILE && $CHECKURL ]] && err "Cannot specify a url and mirrorfile." +[[ $FILE || $CHECKURL || $STDIN ]] || err "Must specify url, mirrorfile, or stdin." + +# Single url handling +if [[ $CHECKURL ]]; then + url="$(getfetchurl "$URL")" + [[ $url = fail ]] && err "url \`$URL' is malformed." + [[ $VERBOSE ]] && echo "Testing $url..." + time=$(gettime "$url") + echo "$URL : $time" + exit 0 +fi + +# Get url results from mirrorfile, fill up the array, and so on +if [[ $TIMESONLY ]]; then + echo "Querying servers, this may take some time..." +elif [[ $FILE ]]; then + echo "# Server list generated by rankmirrors on $(date +%Y-%m-%d)" +fi + +timesarray=() +for line in "${linearray[@]}"; do + if [[ $line =~ ^# ]]; then + [[ $TIMESONLY ]] || echo $line + elif [[ $line =~ ^Server ]]; then + + # Getting values and times and such + server="${line#*= }" + url="$(getfetchurl "$server")" + [[ $url = fail ]] && err "url \`$URL' is malformed." + time=$(gettime "$url") + timesarray+=("$time $server") + + # Output + if [[ $VERBOSE && $TIMESONLY ]]; then + echo "$server ... $time" + elif [[ $VERBOSE ]]; then + echo "# $server ... $time" + elif [[ $TIMESONLY ]]; then + echo -n " *" + fi + fi +done +finaloutput + +# vim: set ts=2 sw=2 noet: |