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pacman/contrib/rankmirrors.sh.in
Aaron Lindsay 3f99cfba1b contrib: Unify quoting in error messages
This fixes error messages to display the contents of variables rather
than the variable name by replacing backticks with single quotes (m4
eats backticks). It also removes $"" localization from error messages to
eliminate security holes.

For instance, `rankmirrors nonexistent_file' will now display:
	'nonexistent_file' does not exist.
rather than:
	$1 does not exist.

Signed-off-by: Aaron Lindsay <aaron@aclindsay.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
2013-09-18 14:28:03 +10:00

213 lines
6.0 KiB
Bash

#!/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: