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#!/usr/bin/bash
set -e
# This CGI script is a caching Arch Linux mirror proxy: it forwards new package
# requests to an actual mirror while caching contents to /var/cache/pacman/pkg.
# Use in pacman.conf with:
#
# Server = https://server/path/to/proxy.cgi/$repo/os/$arch/
[[ $REMOTE_ADDR = 127.0.0.1 ]]
cd /var/cache/pacman/pkg
touch used-by-proxy
MIR=$(awk -F '[$=]' '(!/^#/){print$2;exit}' /etc/pacman.d/mirrorlist)
MIR=${MIR# }
MIR=${MIR%/}
PKG=${PATH_INFO##*/}
if [[ $PATH_INFO = /vesath/* ]]; then
MIR='https://arch.vesath.org/'
PATH_INFO=${PATH_INFO#/vesath/os/}
fi
[[ $PKG = *.db* ]] &&
exec curl --silent --include "$MIR$PATH_INFO"
cat <<EOF
Content-Type: application/octet-stream
Connection: close
EOF
[[ -s $PKG ]] &&
exec cat "$PKG"
curl --silent "$MIR$PATH_INFO" |
tee "$PKG.part"
mv "$PKG.part" "$PKG"
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