git-commit-vandalism/git-tag.sh
Andy Parkins d67778eccd Allow the tag signing key to be specified in the config file
I did this:

  $ git tag -s test-sign
  gpg: skipped "Andy Parkins <andyparkins@gmail.com>": secret key not available
  gpg: signing failed: secret key not available
  failed to sign the tag with GPG.

The problem is that I have used the comment field in my key's UID
definition.

  $ gpg --list-keys andy
  pub   1024D/4F712F6D 2003-08-14
  uid                  Andy Parkins (Google) <andyparkins@gmail.com>

So when git-tag looks for "Andy Parkins <andyparkins@gmail.com>";
obviously it's not going to be found.

There shouldn't be a requirement that I use the same form of my name in
my git repository and my gpg key - I might want to be formal (Andrew) in
my gpg key and informal (Andy) in the repository.  Further I might have
multiple keys in my keyring, and might want to use one that doesn't
match up with the address I use in commit messages.

This patch adds a configuration entry "user.signingkey" which, if
present, will be passed to the "-u" switch for gpg, allowing the tag
signing key to be overridden.  If the entry is not present, the fallback
is the original method, which means existing behaviour will continue
untouched.

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-27 13:46:59 -08:00

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#!/bin/sh
# Copyright (c) 2005 Linus Torvalds
USAGE='-l [<pattern>] | [-a | -s | -u <key-id>] [-f | -d | -v] [-m <msg>] <tagname> [<head>]'
SUBDIRECTORY_OK='Yes'
. git-sh-setup
message_given=
annotate=
signed=
force=
message=
username=
list=
verify=
while case "$#" in 0) break ;; esac
do
case "$1" in
-a)
annotate=1
;;
-s)
annotate=1
signed=1
;;
-f)
force=1
;;
-l)
case "$#" in
1)
set x . ;;
esac
shift
git rev-parse --symbolic --tags | sort | grep "$@"
exit $?
;;
-m)
annotate=1
shift
message="$1"
if test "$#" = "0"; then
die "error: option -m needs an argument"
else
message_given=1
fi
;;
-F)
annotate=1
shift
if test "$#" = "0"; then
die "error: option -F needs an argument"
else
message="$(cat "$1")"
message_given=1
fi
;;
-u)
annotate=1
signed=1
shift
username="$1"
;;
-d)
shift
had_error=0
for tag
do
cur=$(git-show-ref --verify --hash -- "refs/tags/$tag") || {
echo >&2 "Seriously, what tag are you talking about?"
had_error=1
continue
}
git-update-ref -m 'tag: delete' -d "refs/tags/$tag" "$cur" || {
had_error=1
continue
}
echo "Deleted tag $tag."
done
exit $had_error
;;
-v)
shift
tag_name="$1"
tag=$(git-show-ref --verify --hash -- "refs/tags/$tag_name") ||
die "Seriously, what tag are you talking about?"
git-verify-tag -v "$tag"
exit $?
;;
-*)
usage
;;
*)
break
;;
esac
shift
done
name="$1"
[ "$name" ] || usage
prev=0000000000000000000000000000000000000000
if git-show-ref --verify --quiet -- "refs/tags/$name"
then
test -n "$force" || die "tag '$name' already exists"
prev=`git rev-parse "refs/tags/$name"`
fi
shift
git-check-ref-format "tags/$name" ||
die "we do not like '$name' as a tag name."
object=$(git-rev-parse --verify --default HEAD "$@") || exit 1
type=$(git-cat-file -t $object) || exit 1
tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1
keyid=$(git-repo-config user.signingkey) ||
keyid=$(expr "z$tagger" : 'z\(.*>\)')
trap 'rm -f "$GIT_DIR"/TAG_TMP* "$GIT_DIR"/TAG_FINALMSG "$GIT_DIR"/TAG_EDITMSG' 0
if [ "$annotate" ]; then
if [ -z "$message_given" ]; then
( echo "#"
echo "# Write a tag message"
echo "#" ) > "$GIT_DIR"/TAG_EDITMSG
${VISUAL:-${EDITOR:-vi}} "$GIT_DIR"/TAG_EDITMSG || exit
else
echo "$message" >"$GIT_DIR"/TAG_EDITMSG
fi
grep -v '^#' <"$GIT_DIR"/TAG_EDITMSG |
git-stripspace >"$GIT_DIR"/TAG_FINALMSG
[ -s "$GIT_DIR"/TAG_FINALMSG -o -n "$message_given" ] || {
echo >&2 "No tag message?"
exit 1
}
( printf 'object %s\ntype %s\ntag %s\ntagger %s\n\n' \
"$object" "$type" "$name" "$tagger";
cat "$GIT_DIR"/TAG_FINALMSG ) >"$GIT_DIR"/TAG_TMP
rm -f "$GIT_DIR"/TAG_TMP.asc "$GIT_DIR"/TAG_FINALMSG
if [ "$signed" ]; then
gpg -bsa -u "$keyid" "$GIT_DIR"/TAG_TMP &&
cat "$GIT_DIR"/TAG_TMP.asc >>"$GIT_DIR"/TAG_TMP ||
die "failed to sign the tag with GPG."
fi
object=$(git-mktag < "$GIT_DIR"/TAG_TMP)
fi
git update-ref "refs/tags/$name" "$object" "$prev"