#! /bin/sh
# bnc_curl: call curl after authenticating with iChain at bugzilla.novell.com
# author: http://en.opensuse.org/User:Mvidner
#
# usage:
# bnc_curl "https://bugzilla.novell.com/show_bug.cgi?id=176013" > bug.html
# needs a file with "username=foo&password=bar"

# exit on errors
set -o errexit

# encode args as %hex to hide passwords from passers by
percentize() {
    echo "$@" | perl -p -e 's/(.)/sprintf("%%%02x",ord $1)/eg'
}

# file with credentials
CREDSFILE=$HOME/.bnc.creds
if [ "$1" == "--install" ]; then
    echo -n "Bugzilla.Novell.com username (not email): "
    read USERNAME
    echo -n "Bugzilla.Novell.com password (no echo): "
    stty -echo; read PASSWORD; echo; stty echo
    echo "username=$(percentize $USERNAME)&password=$(percentize $PASSWORD)" > $CREDSFILE
    chmod 600 $CREDSFILE
    exit
fi

if ! test -r $CREDSFILE; then
    echo >&2 "Cannot read credentials from $CREDSFILE."
    echo >&2 "Call $0 --install to create it."
    exit 1
fi

ICHAIN="https://bugzilla.novell.com/ICSLogin/auth-up"

# relevant curl options:
# -b: input cookies (various formats)
# -c: save cookies in Netscape format
# -d: pass form data (@ from file)

COOKIEJAR=`mktemp -t bnc_curl_cookiejar_XXXXXX` || exit 1
trap "rm $COOKIEJAR" EXIT INT TERM

curl -c $COOKIEJAR -d @$CREDSFILE "$ICHAIN" >&2
curl -b $COOKIEJAR "$@"