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#!/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 @sysconfdir@/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"
echo " -r, --repo specify a specific repo name instead of guessing"
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" >&2
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//'$arch'/$ARCH}"
if [[ ! $TARGETREPO ]]; then
replacedurl="${replacedurl//'$repo'/core}"
local tmp="${replacedurl%/*}"
tmp="${tmp%/*}"
local reponame="${tmp##*/}"
else
replacedurl="${replacedurl//'$repo'/$TARGETREPO}"
local reponame="$TARGETREPO"
fi
if [[ -z $reponame || $reponame = $replacedurl ]]; then
echo "fail"
else
local fetchurl="${replacedurl}/$reponame.db"
echo "$fetchurl"
fi
}
# This exists to remove the need for a separate interrupt function
finaloutput() {
IFS=$'\n' read -r -d '' -a sortedarray < \
<(printf '%s\n' "${timesarray[@]}" | LC_COLLATE=C 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;;
repo) [[ $2 ]] || err "Must specify repo name."; TARGETREPO="$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;;
r) [[ $2 ]] || err "Must specify repo name."; TARGETREPO="$2"; snum=2;;
n) [[ $2 ]] || err "Must specify number." ; NUM="$2" ; snum=2;;
*) err "'$1' is an invalid 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 =~ ^[[:space:]]*# ]]; then
[[ $TIMESONLY ]] || echo $line
elif [[ $line =~ ^[[:space:]]*Server ]]; then
# Getting values and times and such
server="${line#*= }"
server="${server%%#*}"
url="$(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:
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