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#!/bin/sh
# $Id$
# Public domain. Originally written 2016, Norbert Preining.
# Sign a file for release in TeX Live. Used in tl-update-images,
# tl-update-tlnet, et al. See tlpkg/gpg/tl-key-extension.txt for some info.
if test $# -ne 1; then
echo "$0: Exactly one argument must be given, the file to sign." >&2
exit 1
fi
# remove previous signature else gpg will bail out.
rm -f "$1.asc"
gpg_prog=gpg
gpg_opts="--batch --homedir /home/texlive/.gnupg \
--passphrase-file /home/texlive/.gnupg/passphrase \
--local-user 0x06BAB6BC "
gpg_sign_opts="--armor --detach-sign"
# use the environment variables if set. This is for testing;
# we don't define them in normal usage.
if test -n "$TL_GNUPG"; then
gpg_prog=$TL_GNUPG
fi
if test -n "$TL_GNUPGOPTS"; then
gpg_opts=$TL_GNUPGOPTS
fi
if test -n "$TL_GNUPG_SIGN_OPTS"; then
gpg_sign_opts=$TL_GNUPG_SIGN_OPTS
fi
# sign, check that result is valid and doesn't use something expired.
# both --detach-sign and --verify exit 0 even when something is expired.
if $gpg_prog $gpg_sign_opts $gpg_opts "$1"; then
status_out=`mktemp`
verify_out=`mktemp`
verify_cmd="$gpg_prog $gpg_opts --status-file=$status_out --verify --verbose"
if $verify_cmd "$1".asc >$verify_out 2>&1; then
if grep EXPKEYSIG $status_out >/dev/null; then
err="expired key"
elif grep REVKEYSIG $status_out >/dev/null; then
err="revoked key"
else
err= # ok we hope
fi
else
err="other error ($?)"
fi
if test -n "$err"; then
echo "$0: gpg verification failed." >&2
if test -r "$1".asc; then
echo "$0: moving $1.asc to $1.asc.badv." >&2
mv "$1".asc "$1".asc.badv || exit 1
else
echo "$0: no file $1.asc" >&2
fi
echo "$0: gpg verify command was:" >&2
echo "$0: $verify_cmd" "$1" >&2
echo "$0: STATUS FILE OUTPUT:" >&2
cat $status_out >&2
echo "$0: -------------------" >&2
echo "$0: STDOUT/STDERR:" >&2
cat $verify_out >&2
echo "$0: -------------------" >&2
echo "$0: goodbye and good luck." >&2
rm -f $status_out $verify_out
exit 1
fi
rm -f $status_out $verify_out
else # the original gpg run failed.
echo "$0: gpg signing failed." >&2
if test -r "$1".asc; then
echo "$0: moving $1.asc to $1.asc.bads." >&2
mv "$1".asc "$1".asc.bads || exit 1
else
echo "$0: no file $1.asc" >&2
fi
echo "$0: gpg command was:" >&2
echo "$0: $gpg_prog $gpg_sign_opts $gpg_opts" "$1" >&2
echo "$0: goodbye and good luck." >&2
exit 1
fi
exit 0
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