Re: [maintainer-tools PATCH] dim: Sign commits in addition to tags

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Reminder, we have this new list dim-tools@xxxxxxxxxxxxxxxxxxxxx for
maintainer tools patches. Cc'd.

On Mon, 30 Oct 2017, Sean Paul <seanpaul@xxxxxxxxxxxx> wrote:
> Expanding on Jani's work to sign tags, this patch adds signing for git
> commit/am.

I guess I'd like more rationale here. Is this something we should be
doing? Is anyone else doing this?

> Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
> ---
>
> This has been lightly tested with dim apply-branch/dim push-branch.
>
> Sean
>
>  dim | 78 +++++++++++++++++++++++++++++++++++++++++++++------------------------
>  1 file changed, 51 insertions(+), 27 deletions(-)
>
> diff --git a/dim b/dim
> index 527989aff9ad..cd5e41f89a3a 100755
> --- a/dim
> +++ b/dim
> @@ -67,9 +67,6 @@ DIM_TEMPLATE_SIGNATURE=${DIM_TEMPLATE_SIGNATURE:-$HOME/.dim.template.signature}
>  # dim pull-request tag summary template
>  DIM_TEMPLATE_TAG_SUMMARY=${DIM_TEMPLATE_TAG_SUMMARY:-$HOME/.dim.template.tagsummary}
>  
> -# GPG key id for signing tags. If unset, don't sign.
> -DIM_GPG_KEYID=${DIM_GPG_KEYID:+-u $DIM_GPG_KEYID}
> -
>  #
>  # Internal configuration.
>  #
> @@ -104,6 +101,20 @@ test_request_recipients=(
>  # integration configuration
>  integration_config=nightly.conf
>  
> +# GPG key id for signing tags. If unset, don't sign.
> +function gpg_keyid_for_tag
> +{
> +	echo "${DIM_GPG_KEYID:+-u $DIM_GPG_KEYID}"
> +	return 0
> +}
> +
> +# GPG key id for committing (git commit/am). If unset, don't sign.
> +function gpg_keyid_for_commit
> +{
> +	echo "${DIM_GPG_KEYID:+-S$DIM_GPG_KEYID}"
> +	return 0
> +}

This seems like an overly complicated way to achieve what you want.

Just put these under "Internal configuration." instead:

dim_gpg_sign_tag=${DIM_GPG_KEYID:+-u $DIM_GPG_KEYID}
dim_gpg_sign_commit=${DIM_GPG_KEYID:+-S$DIM_GPG_KEYID}

And use directly in git tag and commit, respectively?

Although... perhaps starting to sign tags should not force signing
commits?

BR,
Jani.


> +
>  function read_integration_config
>  {
>  	# clear everything first to allow configuration reload
> @@ -473,12 +484,14 @@ EOF
>  # append all arguments as tags at the end of the commit message of HEAD
>  function dim_commit_add_tag
>  {
> +	local gpg_keyid
> +	gpg_keyid=$(gpg_keyid_for_commit)
>  	for arg; do
>  		# the first sed deletes all trailing blank lines at the end
>  		git log -1 --pretty=%B | \
>  			sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' | \
>  			sed "\$a${arg}" | \
> -			git commit --amend -F-
> +			git commit $gpg_keyid --amend -F-
>  	done
>  }
>  
> @@ -604,7 +617,7 @@ function update_rerere_cache
>  
>  function commit_rerere_cache
>  {
> -	local remote file commit_message
> +	local remote file commit_message gpg_keyid
>  
>  	echo -n "Updating rerere cache... "
>  
> @@ -640,7 +653,8 @@ function commit_rerere_cache
>  		$(git --version)
>  		EOF
>  
> -	if git commit -F $commit_message >& /dev/null; then
> +	gpg_keyid=$(gpg_keyid_for_commit)
> +	if git commit $gpg_keyid -F $commit_message >& /dev/null; then
>  		echo -n "New commit. "
>  	else
>  		echo -n "Nothing changed. "
> @@ -653,13 +667,14 @@ function commit_rerere_cache
>  
>  function dim_rebuild_tip
>  {
> -	local integration_branch specfile first rerere repo remote
> +	local integration_branch specfile first rerere repo remote gpg_keyid
>  
>  	integration_branch=drm-tip
>  	specfile=$(mktemp)
>  	first=1
>  
>  	rerere=$DIM_PREFIX/drm-rerere
> +	gpg_keyid=$(gpg_keyid_for_commit)
>  
>  	cd $rerere
>  	if git status --porcelain | grep -q -v "^[ ?][ ?]"; then
> @@ -731,7 +746,7 @@ function dim_rebuild_tip
>  
>  			# because we filter out fast-forward merges there will
>  			# always be something to commit
> -			git commit --no-edit --quiet
> +			git commit $gpg_keyid --no-edit --quiet
>  			echo "Done."
>  		fi
>  
> @@ -743,7 +758,7 @@ function dim_rebuild_tip
>  	echo -n "Adding integration manifest $integration_branch: $dim_timestamp... "
>  	mv $specfile integration-manifest
>  	git add integration-manifest
> -	git commit --quiet -m "$integration_branch: $dim_timestamp integration manifest"
> +	git commit $gpg_keyid --quiet -m "$integration_branch: $dim_timestamp integration manifest"
>  	echo "Done."
>  
>  	remote=$(repo_to_remote drm-tip)
> @@ -848,7 +863,7 @@ function dim_push
>  
>  function apply_patch #patch_file
>  {
> -	local patch message_id committer_email patch_from sob rv
> +	local patch message_id committer_email patch_from sob rv gpg_keyid
>  
>  	patch="$1"
>  	shift
> @@ -860,7 +875,8 @@ function apply_patch #patch_file
>  		sob=-s
>  	fi
>  
> -	git am --scissors -3 $sob "$@" $patch
> +	gpg_keyid=$(gpg_keyid_for_commit)
> +	git am --scissors -3 $sob $gpg_keyid "$@" $patch
>  
>  	if [ -n "$message_id" ]; then
>  		dim_commit_add_tag "Link: https://patchwork.freedesktop.org/patch/msgid/$message_id";
> @@ -911,7 +927,7 @@ function dim_apply_branch
>  
>  function dim_apply_pull
>  {
> -	local branch file message_id pull_branch rv
> +	local branch file message_id pull_branch rv gpg_keyid
>  
>  	branch=${1:?$usage}
>  	file=$(mktemp)
> @@ -929,7 +945,8 @@ function dim_apply_pull
>  
>  	message_id=$(message_get_id $file)
>  
> -	git commit --amend -s --no-edit
> +	gpg_keyid=$(gpg_keyid_for_commit)
> +	git commit $gpg_keyid --amend -s --no-edit
>  	if [ -n "$message_id" ]; then
>  		dim_commit_add_tag "Link: https://patchwork.freedesktop.org/patch/msgid/$message_id";
>  	else
> @@ -945,7 +962,7 @@ function dim_apply_pull
>  
>  function dim_backmerge
>  {
> -	local branch upstream patch_file
> +	local branch upstream patch_file gpg_keyid
>  
>  	branch=${1:?$usage}
>  	upstream=${2:?$usage}
> @@ -990,8 +1007,9 @@ function dim_backmerge
>  		echoerr "   git commit -a"
>  	fi
>  
> +	gpg_keyid=$(gpg_keyid_for_commit)
>  	git add -u
> -	git commit -s
> +	git commit $gpg_keyid -s
>  }
>  
>  function dim_add_link
> @@ -1227,7 +1245,7 @@ function dim_magic_patch
>  
>  function dim_create_branch
>  {
> -	local branch repo remote
> +	local branch repo remote gpg_keyid
>  
>  	branch=${1:?$usage}
>  	start=${2:-HEAD}
> @@ -1250,13 +1268,14 @@ function dim_create_branch
>  	cd $DIM_PREFIX/drm-rerere
>  	$DRY sed -i "s/^\() # DO NOT CHANGE THIS LINE\)$/\t\"$repo\t\t${branch//\//\\\/}\"\n\1/" $integration_config
>  
> +	gpg_keyid=$(gpg_keyid_for_commit)
>  	$DRY git add $integration_config
> -	$DRY git commit --quiet -m "Add $repo $branch to $integration_config"
> +	$DRY git commit $gpg_keyid --quiet -m "Add $repo $branch to $integration_config"
>  }
>  
>  function dim_remove_branch
>  {
> -	local branch repo remote
> +	local branch repo remote gpg_keyid
>  
>  	branch=${1:?$usage}
>  
> @@ -1288,8 +1307,9 @@ function dim_remove_branch
>  	cd $DIM_PREFIX/drm-rerere
>  	$DRY sed -i "/^[[:space:]]*\"${repo}[[:space:]]\+${branch//\//\\\/}.*$/d" $integration_config
>  
> +	gpg_keyid=$(gpg_keyid_for_commit)
>  	$DRY git add $integration_config
> -	$DRY git commit --quiet -m "Remove $repo $branch from $integration_config"
> +	$DRY git commit $gpg_keyid --quiet -m "Remove $repo $branch from $integration_config"
>  
>  	dim_rebuild_tip
>  }
> @@ -1579,7 +1599,7 @@ function dim_for_each_workdir
>  
>  function dim_update_next
>  {
> -	local remote
> +	local remote gpg_keyid
>  
>  	assert_branch drm-intel-next-queued
>  
> @@ -1597,12 +1617,13 @@ function dim_update_next
>  		exit 2
>  	fi
>  
> +	gpg_keyid=$(gpg_keyid_for_commit)
>  	driver_date=$(date +%Y%m%d)
>  	driver_timestamp=$(date +%s)
>  	$DRY sed -i -e "s/^#define DRIVER_DATE.*\"[0-9]*\"$/#define DRIVER_DATE\t\t\"$driver_date\"/; s/^#define DRIVER_TIMESTAMP.*/#define DRIVER_TIMESTAMP\t$driver_timestamp/" \
>  	     drivers/gpu/drm/i915/i915_drv.h
>  	$DRY git add drivers/gpu/drm/i915/i915_drv.h
> -	git commit $DRY_RUN -sm "drm/i915: Update DRIVER_DATE to $driver_date"
> +	git commit $DRY_RUN $gpg_keyid -sm "drm/i915: Update DRIVER_DATE to $driver_date"
>  
>  	gitk drm-intel-next-queued ^$(repo_to_remote drm-upstream)/drm-next &
>  
> @@ -1614,7 +1635,7 @@ function dim_update_next
>  
>  function dim_update_next_continue
>  {
> -	local remote intel_remote req_file suffix tag tag_testing
> +	local remote intel_remote req_file suffix tag tag_testing gpg_keyid
>  
>  	assert_branch drm-intel-next-queued
>  
> @@ -1630,7 +1651,8 @@ function dim_update_next_continue
>  		tag_testing="drm-intel-testing-$dim_today-$((++suffix))"
>  	done
>  
> -	$DRY git tag -a $DIM_GPG_KEYID $tag $intel_remote/drm-intel-next
> +	gpg_keyid=$(gpg_keyid_for_tag)
> +	$DRY git tag -a $gpg_keyid $tag $intel_remote/drm-intel-next
>  	git push $DRY_RUN $intel_remote $tag
>  
>  	echo "Updating drm-intel-testing to latest drm-tip"
> @@ -1655,7 +1677,7 @@ function dim_update_next_continue
>  
>  function dim_tag_next
>  {
> -	local intel_remote tag suffix
> +	local intel_remote tag suffix gpg_keyid
>  
>  	cd $DIM_PREFIX/$DIM_REPO
>  
> @@ -1670,7 +1692,8 @@ function dim_tag_next
>  			tag="drm-intel-next-$dim_today-$((++suffix))"
>  		done
>  
> -		$DRY git tag -a $DIM_GPG_KEYID $tag $intel_remote/drm-intel-next
> +		gpg_keyid=$(gpg_keyid_for_tag)
> +		$DRY git tag -a $gpg_keyid $tag $intel_remote/drm-intel-next
>  		git push $DRY_RUN $intel_remote $tag
>  	else
>  		echo "drm-intel-next not up-to-date, aborting"
> @@ -1700,7 +1723,7 @@ function prep_pull_tag_summary
>  # dim_pull_request branch upstream
>  function dim_pull_request
>  {
> -	local branch upstream remote repo req_file url_list git_url suffix tag
> +	local branch upstream remote repo req_file url_list git_url suffix tag gpg_keyid
>  
>  	branch=${1:?$usage}
>  	upstream=${2:?$usage}
> @@ -1731,7 +1754,8 @@ function dim_pull_request
>  		done
>  		gitk "$branch@{upstream}" ^$upstream &
>  		prep_pull_tag_summary | $DRY git tag -F- $tag "$branch@{upstream}"
> -		$DRY git tag -a $DIM_GPG_KEYID -f $tag
> +		gpg_keyid=$(gpg_keyid_for_tag)
> +		$DRY git tag -a $gpg_keyid -f $tag
>  		$DRY git push $remote $tag
>  		prep_pull_mail $req_file $tag

-- 
Jani Nikula, Intel Open Source Technology Center
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