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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
commitc8bae7493d2f2910b57f13ded012e86bdcfb0532 (patch)
tree24e09d9f84dec336720cf393e156089ca2835791 /contrib/hooks
parentInitial commit. (diff)
downloadgit-c8bae7493d2f2910b57f13ded012e86bdcfb0532.tar.xz
git-c8bae7493d2f2910b57f13ded012e86bdcfb0532.zip
Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'contrib/hooks')
-rw-r--r--contrib/hooks/multimail/README.Git7
-rwxr-xr-xcontrib/hooks/post-receive-email759
-rwxr-xr-xcontrib/hooks/pre-auto-gc-battery42
-rwxr-xr-xcontrib/hooks/setgitperms.perl214
-rwxr-xr-xcontrib/hooks/update-paranoid421
5 files changed, 1443 insertions, 0 deletions
diff --git a/contrib/hooks/multimail/README.Git b/contrib/hooks/multimail/README.Git
new file mode 100644
index 0000000..c427efc
--- /dev/null
+++ b/contrib/hooks/multimail/README.Git
@@ -0,0 +1,7 @@
+git-multimail is developed as an independent project at the following
+website:
+
+ https://github.com/git-multimail/git-multimail
+
+Please refer to that project page for information about how to report
+bugs or contribute to git-multimail.
diff --git a/contrib/hooks/post-receive-email b/contrib/hooks/post-receive-email
new file mode 100755
index 0000000..ff565eb
--- /dev/null
+++ b/contrib/hooks/post-receive-email
@@ -0,0 +1,759 @@
+#!/bin/sh
+#
+# Copyright (c) 2007 Andy Parkins
+#
+# An example hook script to mail out commit update information.
+#
+# NOTE: This script is no longer under active development. There
+# is another script, git-multimail, which is more capable and
+# configurable and is largely backwards-compatible with this script;
+# please see "contrib/hooks/multimail/". For instructions on how to
+# migrate from post-receive-email to git-multimail, please see
+# "README.migrate-from-post-receive-email" in that directory.
+#
+# This hook sends emails listing new revisions to the repository
+# introduced by the change being reported. The rule is that (for
+# branch updates) each commit will appear on one email and one email
+# only.
+#
+# This hook is stored in the contrib/hooks directory. Your distribution
+# will have put this somewhere standard. You should make this script
+# executable then link to it in the repository you would like to use it in.
+# For example, on debian the hook is stored in
+# /usr/share/git-core/contrib/hooks/post-receive-email:
+#
+# cd /path/to/your/repository.git
+# ln -sf /usr/share/git-core/contrib/hooks/post-receive-email hooks/post-receive
+#
+# This hook script assumes it is enabled on the central repository of a
+# project, with all users pushing only to it and not between each other. It
+# will still work if you don't operate in that style, but it would become
+# possible for the email to be from someone other than the person doing the
+# push.
+#
+# To help with debugging and use on pre-v1.5.1 git servers, this script will
+# also obey the interface of hooks/update, taking its arguments on the
+# command line. Unfortunately, hooks/update is called once for each ref.
+# To avoid firing one email per ref, this script just prints its output to
+# the screen when used in this mode. The output can then be redirected if
+# wanted.
+#
+# Config
+# ------
+# hooks.mailinglist
+# This is the list that all pushes will go to; leave it blank to not send
+# emails for every ref update.
+# hooks.announcelist
+# This is the list that all pushes of annotated tags will go to. Leave it
+# blank to default to the mailinglist field. The announce emails lists
+# the short log summary of the changes since the last annotated tag.
+# hooks.envelopesender
+# If set then the -f option is passed to sendmail to allow the envelope
+# sender address to be set
+# hooks.emailprefix
+# All emails have their subjects prefixed with this prefix, or "[SCM]"
+# if emailprefix is unset, to aid filtering
+# hooks.showrev
+# The shell command used to format each revision in the email, with
+# "%s" replaced with the commit id. Defaults to "git rev-list -1
+# --pretty %s", displaying the commit id, author, date and log
+# message. To list full patches separated by a blank line, you
+# could set this to "git show -C %s; echo".
+# To list a gitweb/cgit URL *and* a full patch for each change set, use this:
+# "t=%s; printf 'http://.../?id=%%s' \$t; echo;echo; git show -C \$t; echo"
+# Be careful if "..." contains things that will be expanded by shell "eval"
+# or printf.
+# hooks.emailmaxlines
+# The maximum number of lines that should be included in the generated
+# email body. If not specified, there is no limit.
+# Lines beyond the limit are suppressed and counted, and a final
+# line is added indicating the number of suppressed lines.
+# hooks.diffopts
+# Alternate options for the git diff-tree invocation that shows changes.
+# Default is "--stat --summary --find-copies-harder". Add -p to those
+# options to include a unified diff of changes in addition to the usual
+# summary output.
+#
+# Notes
+# -----
+# All emails include the headers "X-Git-Refname", "X-Git-Oldrev",
+# "X-Git-Newrev", and "X-Git-Reftype" to enable fine tuned filtering and
+# give information for debugging.
+#
+
+# ---------------------------- Functions
+
+#
+# Function to prepare for email generation. This decides what type
+# of update this is and whether an email should even be generated.
+#
+prep_for_email()
+{
+ # --- Arguments
+ oldrev=$(git rev-parse $1)
+ newrev=$(git rev-parse $2)
+ refname="$3"
+
+ # --- Interpret
+ # 0000->1234 (create)
+ # 1234->2345 (update)
+ # 2345->0000 (delete)
+ if expr "$oldrev" : '0*$' >/dev/null
+ then
+ change_type="create"
+ else
+ if expr "$newrev" : '0*$' >/dev/null
+ then
+ change_type="delete"
+ else
+ change_type="update"
+ fi
+ fi
+
+ # --- Get the revision types
+ newrev_type=$(git cat-file -t $newrev 2> /dev/null)
+ oldrev_type=$(git cat-file -t "$oldrev" 2> /dev/null)
+ case "$change_type" in
+ create|update)
+ rev="$newrev"
+ rev_type="$newrev_type"
+ ;;
+ delete)
+ rev="$oldrev"
+ rev_type="$oldrev_type"
+ ;;
+ esac
+
+ # The revision type tells us what type the commit is, combined with
+ # the location of the ref we can decide between
+ # - working branch
+ # - tracking branch
+ # - unannoted tag
+ # - annotated tag
+ case "$refname","$rev_type" in
+ refs/tags/*,commit)
+ # un-annotated tag
+ refname_type="tag"
+ short_refname=${refname##refs/tags/}
+ ;;
+ refs/tags/*,tag)
+ # annotated tag
+ refname_type="annotated tag"
+ short_refname=${refname##refs/tags/}
+ # change recipients
+ if [ -n "$announcerecipients" ]; then
+ recipients="$announcerecipients"
+ fi
+ ;;
+ refs/heads/*,commit)
+ # branch
+ refname_type="branch"
+ short_refname=${refname##refs/heads/}
+ ;;
+ refs/remotes/*,commit)
+ # tracking branch
+ refname_type="tracking branch"
+ short_refname=${refname##refs/remotes/}
+ echo >&2 "*** Push-update of tracking branch, $refname"
+ echo >&2 "*** - no email generated."
+ return 1
+ ;;
+ *)
+ # Anything else (is there anything else?)
+ echo >&2 "*** Unknown type of update to $refname ($rev_type)"
+ echo >&2 "*** - no email generated"
+ return 1
+ ;;
+ esac
+
+ # Check if we've got anyone to send to
+ if [ -z "$recipients" ]; then
+ case "$refname_type" in
+ "annotated tag")
+ config_name="hooks.announcelist"
+ ;;
+ *)
+ config_name="hooks.mailinglist"
+ ;;
+ esac
+ echo >&2 "*** $config_name is not set so no email will be sent"
+ echo >&2 "*** for $refname update $oldrev->$newrev"
+ return 1
+ fi
+
+ return 0
+}
+
+#
+# Top level email generation function. This calls the appropriate
+# body-generation routine after outputting the common header.
+#
+# Note this function doesn't actually generate any email output, that is
+# taken care of by the functions it calls:
+# - generate_email_header
+# - generate_create_XXXX_email
+# - generate_update_XXXX_email
+# - generate_delete_XXXX_email
+# - generate_email_footer
+#
+# Note also that this function cannot 'exit' from the script; when this
+# function is running (in hook script mode), the send_mail() function
+# is already executing in another process, connected via a pipe, and
+# if this function exits without, whatever has been generated to that
+# point will be sent as an email... even if nothing has been generated.
+#
+generate_email()
+{
+ # Email parameters
+ # The email subject will contain the best description of the ref
+ # that we can build from the parameters
+ describe=$(git describe $rev 2>/dev/null)
+ if [ -z "$describe" ]; then
+ describe=$rev
+ fi
+
+ generate_email_header
+
+ # Call the correct body generation function
+ fn_name=general
+ case "$refname_type" in
+ "tracking branch"|branch)
+ fn_name=branch
+ ;;
+ "annotated tag")
+ fn_name=atag
+ ;;
+ esac
+
+ if [ -z "$maxlines" ]; then
+ generate_${change_type}_${fn_name}_email
+ else
+ generate_${change_type}_${fn_name}_email | limit_lines $maxlines
+ fi
+
+ generate_email_footer
+}
+
+generate_email_header()
+{
+ # --- Email (all stdout will be the email)
+ # Generate header
+ cat <<-EOF
+ To: $recipients
+ Subject: ${emailprefix}$projectdesc $refname_type $short_refname ${change_type}d. $describe
+ MIME-Version: 1.0
+ Content-Type: text/plain; charset=utf-8
+ Content-Transfer-Encoding: 8bit
+ X-Git-Refname: $refname
+ X-Git-Reftype: $refname_type
+ X-Git-Oldrev: $oldrev
+ X-Git-Newrev: $newrev
+ Auto-Submitted: auto-generated
+
+ This is an automated email from the git hooks/post-receive script. It was
+ generated because a ref change was pushed to the repository containing
+ the project "$projectdesc".
+
+ The $refname_type, $short_refname has been ${change_type}d
+ EOF
+}
+
+generate_email_footer()
+{
+ SPACE=" "
+ cat <<-EOF
+
+
+ hooks/post-receive
+ --${SPACE}
+ $projectdesc
+ EOF
+}
+
+# --------------- Branches
+
+#
+# Called for the creation of a branch
+#
+generate_create_branch_email()
+{
+ # This is a new branch and so oldrev is not valid
+ echo " at $newrev ($newrev_type)"
+ echo ""
+
+ echo $LOGBEGIN
+ show_new_revisions
+ echo $LOGEND
+}
+
+#
+# Called for the change of a pre-existing branch
+#
+generate_update_branch_email()
+{
+ # Consider this:
+ # 1 --- 2 --- O --- X --- 3 --- 4 --- N
+ #
+ # O is $oldrev for $refname
+ # N is $newrev for $refname
+ # X is a revision pointed to by some other ref, for which we may
+ # assume that an email has already been generated.
+ # In this case we want to issue an email containing only revisions
+ # 3, 4, and N. Given (almost) by
+ #
+ # git rev-list N ^O --not --all
+ #
+ # The reason for the "almost", is that the "--not --all" will take
+ # precedence over the "N", and effectively will translate to
+ #
+ # git rev-list N ^O ^X ^N
+ #
+ # So, we need to build up the list more carefully. git rev-parse
+ # will generate a list of revs that may be fed into git rev-list.
+ # We can get it to make the "--not --all" part and then filter out
+ # the "^N" with:
+ #
+ # git rev-parse --not --all | grep -v N
+ #
+ # Then, using the --stdin switch to git rev-list we have effectively
+ # manufactured
+ #
+ # git rev-list N ^O ^X
+ #
+ # This leaves a problem when someone else updates the repository
+ # while this script is running. Their new value of the ref we're
+ # working on would be included in the "--not --all" output; and as
+ # our $newrev would be an ancestor of that commit, it would exclude
+ # all of our commits. What we really want is to exclude the current
+ # value of $refname from the --not list, rather than N itself. So:
+ #
+ # git rev-parse --not --all | grep -v $(git rev-parse $refname)
+ #
+ # Gets us to something pretty safe (apart from the small time
+ # between refname being read, and git rev-parse running - for that,
+ # I give up)
+ #
+ #
+ # Next problem, consider this:
+ # * --- B --- * --- O ($oldrev)
+ # \
+ # * --- X --- * --- N ($newrev)
+ #
+ # That is to say, there is no guarantee that oldrev is a strict
+ # subset of newrev (it would have required a --force, but that's
+ # allowed). So, we can't simply say rev-list $oldrev..$newrev.
+ # Instead we find the common base of the two revs and list from
+ # there.
+ #
+ # As above, we need to take into account the presence of X; if
+ # another branch is already in the repository and points at some of
+ # the revisions that we are about to output - we don't want them.
+ # The solution is as before: git rev-parse output filtered.
+ #
+ # Finally, tags: 1 --- 2 --- O --- T --- 3 --- 4 --- N
+ #
+ # Tags pushed into the repository generate nice shortlog emails that
+ # summarise the commits between them and the previous tag. However,
+ # those emails don't include the full commit messages that we output
+ # for a branch update. Therefore we still want to output revisions
+ # that have been output on a tag email.
+ #
+ # Luckily, git rev-parse includes just the tool. Instead of using
+ # "--all" we use "--branches"; this has the added benefit that
+ # "remotes/" will be ignored as well.
+
+ # List all of the revisions that were removed by this update, in a
+ # fast-forward update, this list will be empty, because rev-list O
+ # ^N is empty. For a non-fast-forward, O ^N is the list of removed
+ # revisions
+ fast_forward=""
+ rev=""
+ for rev in $(git rev-list $newrev..$oldrev)
+ do
+ revtype=$(git cat-file -t "$rev")
+ echo " discards $rev ($revtype)"
+ done
+ if [ -z "$rev" ]; then
+ fast_forward=1
+ fi
+
+ # List all the revisions from baserev to newrev in a kind of
+ # "table-of-contents"; note this list can include revisions that
+ # have already had notification emails and is present to show the
+ # full detail of the change from rolling back the old revision to
+ # the base revision and then forward to the new revision
+ for rev in $(git rev-list $oldrev..$newrev)
+ do
+ revtype=$(git cat-file -t "$rev")
+ echo " via $rev ($revtype)"
+ done
+
+ if [ "$fast_forward" ]; then
+ echo " from $oldrev ($oldrev_type)"
+ else
+ # 1. Existing revisions were removed. In this case newrev
+ # is a subset of oldrev - this is the reverse of a
+ # fast-forward, a rewind
+ # 2. New revisions were added on top of an old revision,
+ # this is a rewind and addition.
+
+ # (1) certainly happened, (2) possibly. When (2) hasn't
+ # happened, we set a flag to indicate that no log printout
+ # is required.
+
+ echo ""
+
+ # Find the common ancestor of the old and new revisions and
+ # compare it with newrev
+ baserev=$(git merge-base $oldrev $newrev)
+ rewind_only=""
+ if [ "$baserev" = "$newrev" ]; then
+ echo "This update discarded existing revisions and left the branch pointing at"
+ echo "a previous point in the repository history."
+ echo ""
+ echo " * -- * -- N ($newrev)"
+ echo " \\"
+ echo " O -- O -- O ($oldrev)"
+ echo ""
+ echo "The removed revisions are not necessarily gone - if another reference"
+ echo "still refers to them they will stay in the repository."
+ rewind_only=1
+ else
+ echo "This update added new revisions after undoing existing revisions. That is"
+ echo "to say, the old revision is not a strict subset of the new revision. This"
+ echo "situation occurs when you --force push a change and generate a repository"
+ echo "containing something like this:"
+ echo ""
+ echo " * -- * -- B -- O -- O -- O ($oldrev)"
+ echo " \\"
+ echo " N -- N -- N ($newrev)"
+ echo ""
+ echo "When this happens we assume that you've already had alert emails for all"
+ echo "of the O revisions, and so we here report only the revisions in the N"
+ echo "branch from the common base, B."
+ fi
+ fi
+
+ echo ""
+ if [ -z "$rewind_only" ]; then
+ echo "Those revisions listed above that are new to this repository have"
+ echo "not appeared on any other notification email; so we list those"
+ echo "revisions in full, below."
+
+ echo ""
+ echo $LOGBEGIN
+ show_new_revisions
+
+ # XXX: Need a way of detecting whether git rev-list actually
+ # outputted anything, so that we can issue a "no new
+ # revisions added by this update" message
+
+ echo $LOGEND
+ else
+ echo "No new revisions were added by this update."
+ fi
+
+ # The diffstat is shown from the old revision to the new revision.
+ # This is to show the truth of what happened in this change.
+ # There's no point showing the stat from the base to the new
+ # revision because the base is effectively a random revision at this
+ # point - the user will be interested in what this revision changed
+ # - including the undoing of previous revisions in the case of
+ # non-fast-forward updates.
+ echo ""
+ echo "Summary of changes:"
+ git diff-tree $diffopts $oldrev..$newrev
+}
+
+#
+# Called for the deletion of a branch
+#
+generate_delete_branch_email()
+{
+ echo " was $oldrev"
+ echo ""
+ echo $LOGBEGIN
+ git diff-tree -s --always --encoding=UTF-8 --pretty=oneline $oldrev
+ echo $LOGEND
+}
+
+# --------------- Annotated tags
+
+#
+# Called for the creation of an annotated tag
+#
+generate_create_atag_email()
+{
+ echo " at $newrev ($newrev_type)"
+
+ generate_atag_email
+}
+
+#
+# Called for the update of an annotated tag (this is probably a rare event
+# and may not even be allowed)
+#
+generate_update_atag_email()
+{
+ echo " to $newrev ($newrev_type)"
+ echo " from $oldrev (which is now obsolete)"
+
+ generate_atag_email
+}
+
+#
+# Called when an annotated tag is created or changed
+#
+generate_atag_email()
+{
+ # Use git for-each-ref to pull out the individual fields from the
+ # tag
+ eval $(git for-each-ref --shell --format='
+ tagobject=%(*objectname)
+ tagtype=%(*objecttype)
+ tagger=%(taggername)
+ tagged=%(taggerdate)' $refname
+ )
+
+ echo " tagging $tagobject ($tagtype)"
+ case "$tagtype" in
+ commit)
+
+ # If the tagged object is a commit, then we assume this is a
+ # release, and so we calculate which tag this tag is
+ # replacing
+ prevtag=$(git describe --abbrev=0 $newrev^ 2>/dev/null)
+
+ if [ -n "$prevtag" ]; then
+ echo " replaces $prevtag"
+ fi
+ ;;
+ *)
+ echo " length $(git cat-file -s $tagobject) bytes"
+ ;;
+ esac
+ echo " tagged by $tagger"
+ echo " on $tagged"
+
+ echo ""
+ echo $LOGBEGIN
+
+ # Show the content of the tag message; this might contain a change
+ # log or release notes so is worth displaying.
+ git cat-file tag $newrev | sed -e '1,/^$/d'
+
+ echo ""
+ case "$tagtype" in
+ commit)
+ # Only commit tags make sense to have rev-list operations
+ # performed on them
+ if [ -n "$prevtag" ]; then
+ # Show changes since the previous release
+ git shortlog "$prevtag..$newrev"
+ else
+ # No previous tag, show all the changes since time
+ # began
+ git shortlog $newrev
+ fi
+ ;;
+ *)
+ # XXX: Is there anything useful we can do for non-commit
+ # objects?
+ ;;
+ esac
+
+ echo $LOGEND
+}
+
+#
+# Called for the deletion of an annotated tag
+#
+generate_delete_atag_email()
+{
+ echo " was $oldrev"
+ echo ""
+ echo $LOGBEGIN
+ git diff-tree -s --always --encoding=UTF-8 --pretty=oneline $oldrev
+ echo $LOGEND
+}
+
+# --------------- General references
+
+#
+# Called when any other type of reference is created (most likely a
+# non-annotated tag)
+#
+generate_create_general_email()
+{
+ echo " at $newrev ($newrev_type)"
+
+ generate_general_email
+}
+
+#
+# Called when any other type of reference is updated (most likely a
+# non-annotated tag)
+#
+generate_update_general_email()
+{
+ echo " to $newrev ($newrev_type)"
+ echo " from $oldrev"
+
+ generate_general_email
+}
+
+#
+# Called for creation or update of any other type of reference
+#
+generate_general_email()
+{
+ # Unannotated tags are more about marking a point than releasing a
+ # version; therefore we don't do the shortlog summary that we do for
+ # annotated tags above - we simply show that the point has been
+ # marked, and print the log message for the marked point for
+ # reference purposes
+ #
+ # Note this section also catches any other reference type (although
+ # there aren't any) and deals with them in the same way.
+
+ echo ""
+ if [ "$newrev_type" = "commit" ]; then
+ echo $LOGBEGIN
+ git diff-tree -s --always --encoding=UTF-8 --pretty=medium $newrev
+ echo $LOGEND
+ else
+ # What can we do here? The tag marks an object that is not
+ # a commit, so there is no log for us to display. It's
+ # probably not wise to output git cat-file as it could be a
+ # binary blob. We'll just say how big it is
+ echo "$newrev is a $newrev_type, and is $(git cat-file -s $newrev) bytes long."
+ fi
+}
+
+#
+# Called for the deletion of any other type of reference
+#
+generate_delete_general_email()
+{
+ echo " was $oldrev"
+ echo ""
+ echo $LOGBEGIN
+ git diff-tree -s --always --encoding=UTF-8 --pretty=oneline $oldrev
+ echo $LOGEND
+}
+
+
+# --------------- Miscellaneous utilities
+
+#
+# Show new revisions as the user would like to see them in the email.
+#
+show_new_revisions()
+{
+ # This shows all log entries that are not already covered by
+ # another ref - i.e. commits that are now accessible from this
+ # ref that were previously not accessible
+ # (see generate_update_branch_email for the explanation of this
+ # command)
+
+ # Revision range passed to rev-list differs for new vs. updated
+ # branches.
+ if [ "$change_type" = create ]
+ then
+ # Show all revisions exclusive to this (new) branch.
+ revspec=$newrev
+ else
+ # Branch update; show revisions not part of $oldrev.
+ revspec=$oldrev..$newrev
+ fi
+
+ other_branches=$(git for-each-ref --format='%(refname)' refs/heads/ |
+ grep -F -v $refname)
+ git rev-parse --not $other_branches |
+ if [ -z "$custom_showrev" ]
+ then
+ git rev-list --pretty --stdin $revspec
+ else
+ git rev-list --stdin $revspec |
+ while read onerev
+ do
+ eval $(printf "$custom_showrev" $onerev)
+ done
+ fi
+}
+
+
+limit_lines()
+{
+ lines=0
+ skipped=0
+ while IFS="" read -r line; do
+ lines=$((lines + 1))
+ if [ $lines -gt $1 ]; then
+ skipped=$((skipped + 1))
+ else
+ printf "%s\n" "$line"
+ fi
+ done
+ if [ $skipped -ne 0 ]; then
+ echo "... $skipped lines suppressed ..."
+ fi
+}
+
+
+send_mail()
+{
+ if [ -n "$envelopesender" ]; then
+ /usr/sbin/sendmail -t -f "$envelopesender"
+ else
+ /usr/sbin/sendmail -t
+ fi
+}
+
+# ---------------------------- main()
+
+# --- Constants
+LOGBEGIN="- Log -----------------------------------------------------------------"
+LOGEND="-----------------------------------------------------------------------"
+
+# --- Config
+# Set GIT_DIR either from the working directory, or from the environment
+# variable.
+GIT_DIR=$(git rev-parse --git-dir 2>/dev/null)
+if [ -z "$GIT_DIR" ]; then
+ echo >&2 "fatal: post-receive: GIT_DIR not set"
+ exit 1
+fi
+
+projectdesc=$(sed -ne '1p' "$GIT_DIR/description" 2>/dev/null)
+# Check if the description is unchanged from it's default, and shorten it to
+# a more manageable length if it is
+if expr "$projectdesc" : "Unnamed repository.*$" >/dev/null
+then
+ projectdesc="UNNAMED PROJECT"
+fi
+
+recipients=$(git config hooks.mailinglist)
+announcerecipients=$(git config hooks.announcelist)
+envelopesender=$(git config hooks.envelopesender)
+emailprefix=$(git config hooks.emailprefix || echo '[SCM] ')
+custom_showrev=$(git config hooks.showrev)
+maxlines=$(git config hooks.emailmaxlines)
+diffopts=$(git config hooks.diffopts)
+: ${diffopts:="--stat --summary --find-copies-harder"}
+
+# --- Main loop
+# Allow dual mode: run from the command line just like the update hook, or
+# if no arguments are given then run as a hook script
+if [ -n "$1" -a -n "$2" -a -n "$3" ]; then
+ # Output to the terminal in command line mode - if someone wanted to
+ # resend an email; they could redirect the output to sendmail
+ # themselves
+ prep_for_email $2 $3 $1 && PAGER= generate_email
+else
+ while read oldrev newrev refname
+ do
+ prep_for_email $oldrev $newrev $refname || continue
+ generate_email $maxlines | send_mail
+ done
+fi
diff --git a/contrib/hooks/pre-auto-gc-battery b/contrib/hooks/pre-auto-gc-battery
new file mode 100755
index 0000000..7ba78c4
--- /dev/null
+++ b/contrib/hooks/pre-auto-gc-battery
@@ -0,0 +1,42 @@
+#!/bin/sh
+#
+# An example hook script to verify if you are on battery, in case you
+# are running Linux or OS X. Called by git-gc --auto with no arguments.
+# The hook should exit with non-zero status after issuing an appropriate
+# message if it wants to stop the auto repacking.
+#
+# This hook is stored in the contrib/hooks directory. Your distribution
+# may have put this somewhere else. If you want to use this hook, you
+# should make this script executable then link to it in the repository
+# you would like to use it in.
+#
+# For example, if the hook is stored in
+# /usr/share/git-core/contrib/hooks/pre-auto-gc-battery:
+#
+# cd /path/to/your/repository.git
+# ln -sf /usr/share/git-core/contrib/hooks/pre-auto-gc-battery \
+# hooks/pre-auto-gc
+
+if test -x /sbin/on_ac_power && (/sbin/on_ac_power;test $? -ne 1)
+then
+ exit 0
+elif test "$(cat /sys/class/power_supply/AC/online 2>/dev/null)" = 1
+then
+ exit 0
+elif grep -q 'on-line' /proc/acpi/ac_adapter/AC/state 2>/dev/null
+then
+ exit 0
+elif grep -q '0x01$' /proc/apm 2>/dev/null
+then
+ exit 0
+elif grep -q "AC Power \+: 1" /proc/pmu/info 2>/dev/null
+then
+ exit 0
+elif test -x /usr/bin/pmset && /usr/bin/pmset -g batt |
+ grep -q "drawing from 'AC Power'"
+then
+ exit 0
+fi
+
+echo "Auto packing deferred; not on AC"
+exit 1
diff --git a/contrib/hooks/setgitperms.perl b/contrib/hooks/setgitperms.perl
new file mode 100755
index 0000000..2770a1b
--- /dev/null
+++ b/contrib/hooks/setgitperms.perl
@@ -0,0 +1,214 @@
+#!/usr/bin/perl
+#
+# Copyright (c) 2006 Josh England
+#
+# This script can be used to save/restore full permissions and ownership data
+# within a git working tree.
+#
+# To save permissions/ownership data, place this script in your .git/hooks
+# directory and enable a `pre-commit` hook with the following lines:
+# #!/bin/sh
+# SUBDIRECTORY_OK=1 . git-sh-setup
+# $GIT_DIR/hooks/setgitperms.perl -r
+#
+# To restore permissions/ownership data, place this script in your .git/hooks
+# directory and enable a `post-merge` and `post-checkout` hook with the
+# following lines:
+# #!/bin/sh
+# SUBDIRECTORY_OK=1 . git-sh-setup
+# $GIT_DIR/hooks/setgitperms.perl -w
+#
+use strict;
+use Getopt::Long;
+use File::Find;
+use File::Basename;
+
+my $usage =
+"usage: setgitperms.perl [OPTION]... <--read|--write>
+This program uses a file `.gitmeta` to store/restore permissions and uid/gid
+info for all files/dirs tracked by git in the repository.
+
+---------------------------------Read Mode-------------------------------------
+-r, --read Reads perms/etc from working dir into a .gitmeta file
+-s, --stdout Output to stdout instead of .gitmeta
+-d, --diff Show unified diff of perms file (XOR with --stdout)
+
+---------------------------------Write Mode------------------------------------
+-w, --write Modify perms/etc in working dir to match the .gitmeta file
+-v, --verbose Be verbose
+
+\n";
+
+my ($stdout, $showdiff, $verbose, $read_mode, $write_mode);
+
+if ((@ARGV < 0) || !GetOptions(
+ "stdout", \$stdout,
+ "diff", \$showdiff,
+ "read", \$read_mode,
+ "write", \$write_mode,
+ "verbose", \$verbose,
+ )) { die $usage; }
+die $usage unless ($read_mode xor $write_mode);
+
+my $topdir = `git rev-parse --show-cdup` or die "\n"; chomp $topdir;
+my $gitdir = $topdir . '.git';
+my $gitmeta = $topdir . '.gitmeta';
+
+if ($write_mode) {
+ # Update the working dir permissions/ownership based on data from .gitmeta
+ open (IN, "<$gitmeta") or die "Could not open $gitmeta for reading: $!\n";
+ while (defined ($_ = <IN>)) {
+ chomp;
+ if (/^(.*) mode=(\S+)\s+uid=(\d+)\s+gid=(\d+)/) {
+ # Compare recorded perms to actual perms in the working dir
+ my ($path, $mode, $uid, $gid) = ($1, $2, $3, $4);
+ my $fullpath = $topdir . $path;
+ my (undef,undef,$wmode,undef,$wuid,$wgid) = lstat($fullpath);
+ $wmode = sprintf "%04o", $wmode & 07777;
+ if ($mode ne $wmode) {
+ $verbose && print "Updating permissions on $path: old=$wmode, new=$mode\n";
+ chmod oct($mode), $fullpath;
+ }
+ if ($uid != $wuid || $gid != $wgid) {
+ if ($verbose) {
+ # Print out user/group names instead of uid/gid
+ my $pwname = getpwuid($uid);
+ my $grpname = getgrgid($gid);
+ my $wpwname = getpwuid($wuid);
+ my $wgrpname = getgrgid($wgid);
+ $pwname = $uid if !defined $pwname;
+ $grpname = $gid if !defined $grpname;
+ $wpwname = $wuid if !defined $wpwname;
+ $wgrpname = $wgid if !defined $wgrpname;
+
+ print "Updating uid/gid on $path: old=$wpwname/$wgrpname, new=$pwname/$grpname\n";
+ }
+ chown $uid, $gid, $fullpath;
+ }
+ }
+ else {
+ warn "Invalid input format in $gitmeta:\n\t$_\n";
+ }
+ }
+ close IN;
+}
+elsif ($read_mode) {
+ # Handle merge conflicts in the .gitperms file
+ if (-e "$gitdir/MERGE_MSG") {
+ if (`grep ====== $gitmeta`) {
+ # Conflict not resolved -- abort the commit
+ print "PERMISSIONS/OWNERSHIP CONFLICT\n";
+ print " Resolve the conflict in the $gitmeta file and then run\n";
+ print " `.git/hooks/setgitperms.perl --write` to reconcile.\n";
+ exit 1;
+ }
+ elsif (`grep $gitmeta $gitdir/MERGE_MSG`) {
+ # A conflict in .gitmeta has been manually resolved. Verify that
+ # the working dir perms matches the current .gitmeta perms for
+ # each file/dir that conflicted.
+ # This is here because a `setgitperms.perl --write` was not
+ # performed due to a merge conflict, so permissions/ownership
+ # may not be consistent with the manually merged .gitmeta file.
+ my @conflict_diff = `git show \$(cat $gitdir/MERGE_HEAD)`;
+ my @conflict_files;
+ my $metadiff = 0;
+
+ # Build a list of files that conflicted from the .gitmeta diff
+ foreach my $line (@conflict_diff) {
+ if ($line =~ m|^diff --git a/$gitmeta b/$gitmeta|) {
+ $metadiff = 1;
+ }
+ elsif ($line =~ /^diff --git/) {
+ $metadiff = 0;
+ }
+ elsif ($metadiff && $line =~ /^\+(.*) mode=/) {
+ push @conflict_files, $1;
+ }
+ }
+
+ # Verify that each conflict file now has permissions consistent
+ # with the .gitmeta file
+ foreach my $file (@conflict_files) {
+ my $absfile = $topdir . $file;
+ my $gm_entry = `grep "^$file mode=" $gitmeta`;
+ if ($gm_entry =~ /mode=(\d+) uid=(\d+) gid=(\d+)/) {
+ my ($gm_mode, $gm_uid, $gm_gid) = ($1, $2, $3);
+ my (undef,undef,$mode,undef,$uid,$gid) = lstat("$absfile");
+ $mode = sprintf("%04o", $mode & 07777);
+ if (($gm_mode ne $mode) || ($gm_uid != $uid)
+ || ($gm_gid != $gid)) {
+ print "PERMISSIONS/OWNERSHIP CONFLICT\n";
+ print " Mismatch found for file: $file\n";
+ print " Run `.git/hooks/setgitperms.perl --write` to reconcile.\n";
+ exit 1;
+ }
+ }
+ else {
+ print "Warning! Permissions/ownership no longer being tracked for file: $file\n";
+ }
+ }
+ }
+ }
+
+ # No merge conflicts -- write out perms/ownership data to .gitmeta file
+ unless ($stdout) {
+ open (OUT, ">$gitmeta.tmp") or die "Could not open $gitmeta.tmp for writing: $!\n";
+ }
+
+ my @files = `git ls-files`;
+ my %dirs;
+
+ foreach my $path (@files) {
+ chomp $path;
+ # We have to manually add stats for parent directories
+ my $parent = dirname($path);
+ while (!exists $dirs{$parent}) {
+ $dirs{$parent} = 1;
+ next if $parent eq '.';
+ printstats($parent);
+ $parent = dirname($parent);
+ }
+ # Now the git-tracked file
+ printstats($path);
+ }
+
+ # diff the temporary metadata file to see if anything has changed
+ # If no metadata has changed, don't overwrite the real file
+ # This is just so `git commit -a` doesn't try to commit a bogus update
+ unless ($stdout) {
+ if (! -e $gitmeta) {
+ rename "$gitmeta.tmp", $gitmeta;
+ }
+ else {
+ my $diff = `diff -U 0 $gitmeta $gitmeta.tmp`;
+ if ($diff ne '') {
+ rename "$gitmeta.tmp", $gitmeta;
+ }
+ else {
+ unlink "$gitmeta.tmp";
+ }
+ if ($showdiff) {
+ print $diff;
+ }
+ }
+ close OUT;
+ }
+ # Make sure the .gitmeta file is tracked
+ system("git add $gitmeta");
+}
+
+
+sub printstats {
+ my $path = $_[0];
+ $path =~ s/@/\@/g;
+ my (undef,undef,$mode,undef,$uid,$gid) = lstat($path);
+ $path =~ s/%/\%/g;
+ if ($stdout) {
+ print $path;
+ printf " mode=%04o uid=$uid gid=$gid\n", $mode & 07777;
+ }
+ else {
+ print OUT $path;
+ printf OUT " mode=%04o uid=$uid gid=$gid\n", $mode & 07777;
+ }
+}
diff --git a/contrib/hooks/update-paranoid b/contrib/hooks/update-paranoid
new file mode 100755
index 0000000..0092d67
--- /dev/null
+++ b/contrib/hooks/update-paranoid
@@ -0,0 +1,421 @@
+#!/usr/bin/perl
+
+use strict;
+use File::Spec;
+
+$ENV{PATH} = '/opt/git/bin';
+my $acl_git = '/vcs/acls.git';
+my $acl_branch = 'refs/heads/master';
+my $debug = 0;
+
+=doc
+Invoked as: update refname old-sha1 new-sha1
+
+This script is run by git-receive-pack once for each ref that the
+client is trying to modify. If we exit with a non-zero exit value
+then the update for that particular ref is denied, but updates for
+other refs in the same run of receive-pack may still be allowed.
+
+We are run after the objects have been uploaded, but before the
+ref is actually modified. We take advantage of that fact when we
+look for "new" commits and tags (the new objects won't show up in
+`rev-list --all`).
+
+This script loads and parses the content of the config file
+"users/$this_user.acl" from the $acl_branch commit of $acl_git ODB.
+The acl file is a git-config style file, but uses a slightly more
+restricted syntax as the Perl parser contained within this script
+is not nearly as permissive as git-config.
+
+Example:
+
+ [user]
+ committer = John Doe <john.doe@example.com>
+ committer = John R. Doe <john.doe@example.com>
+
+ [repository "acls"]
+ allow = heads/master
+ allow = CDUR for heads/jd/
+ allow = C for ^tags/v\\d+$
+
+For all new commit or tag objects the committer (or tagger) line
+within the object must exactly match one of the user.committer
+values listed in the acl file ("HEAD:users/$this_user.acl").
+
+For a branch to be modified an allow line within the matching
+repository section must be matched for both the refname and the
+opcode.
+
+Repository sections are matched on the basename of the repository
+(after removing the .git suffix).
+
+The opcode abbreviations are:
+
+ C: create new ref
+ D: delete existing ref
+ U: fast-forward existing ref (no commit loss)
+ R: rewind/rebase existing ref (commit loss)
+
+if no opcodes are listed before the "for" keyword then "U" (for
+fast-forward update only) is assumed as this is the most common
+usage.
+
+Refnames are matched by always assuming a prefix of "refs/".
+This hook forbids pushing or deleting anything not under "refs/".
+
+Refnames that start with ^ are Perl regular expressions, and the ^
+is kept as part of the regexp. \\ is needed to get just one \, so
+\\d expands to \d in Perl. The 3rd allow line above is an example.
+
+Refnames that don't start with ^ but that end with / are prefix
+matches (2nd allow line above); all other refnames are strict
+equality matches (1st allow line).
+
+Anything pushed to "heads/" (ok, really "refs/heads/") must be
+a commit. Tags are not permitted here.
+
+Anything pushed to "tags/" (err, really "refs/tags/") must be an
+annotated tag. Commits, blobs, trees, etc. are not permitted here.
+Annotated tag signatures aren't checked, nor are they required.
+
+The special subrepository of 'info/new-commit-check' can
+be created and used to allow users to push new commits and
+tags from another local repository to this one, even if they
+aren't the committer/tagger of those objects. In a nut shell
+the info/new-commit-check directory is a Git repository whose
+objects/info/alternates file lists this repository and all other
+possible sources, and whose refs subdirectory contains symlinks
+to this repository's refs subdirectory, and to all other possible
+sources refs subdirectories. Yes, this means that you cannot
+use packed-refs in those repositories as they won't be resolved
+correctly.
+
+=cut
+
+my $git_dir = $ENV{GIT_DIR};
+my $new_commit_check = "$git_dir/info/new-commit-check";
+my $ref = $ARGV[0];
+my $old = $ARGV[1];
+my $new = $ARGV[2];
+my $new_type;
+my ($this_user) = getpwuid $<; # REAL_USER_ID
+my $repository_name;
+my %user_committer;
+my @allow_rules;
+my @path_rules;
+my %diff_cache;
+
+sub deny ($) {
+ print STDERR "-Deny- $_[0]\n" if $debug;
+ print STDERR "\ndenied: $_[0]\n\n";
+ exit 1;
+}
+
+sub grant ($) {
+ print STDERR "-Grant- $_[0]\n" if $debug;
+ exit 0;
+}
+
+sub info ($) {
+ print STDERR "-Info- $_[0]\n" if $debug;
+}
+
+sub git_value (@) {
+ open(T,'-|','git',@_); local $_ = <T>; chop; close T; $_;
+}
+
+sub match_string ($$) {
+ my ($acl_n, $ref) = @_;
+ ($acl_n eq $ref)
+ || ($acl_n =~ m,/$, && substr($ref,0,length $acl_n) eq $acl_n)
+ || ($acl_n =~ m,^\^, && $ref =~ m:$acl_n:);
+}
+
+sub parse_config ($$$$) {
+ my $data = shift;
+ local $ENV{GIT_DIR} = shift;
+ my $br = shift;
+ my $fn = shift;
+ return unless git_value('rev-list','--max-count=1',$br,'--',$fn);
+ info "Loading $br:$fn";
+ open(I,'-|','git','cat-file','blob',"$br:$fn");
+ my $section = '';
+ while (<I>) {
+ chomp;
+ if (/^\s*$/ || /^\s*#/) {
+ } elsif (/^\[([a-z]+)\]$/i) {
+ $section = lc $1;
+ } elsif (/^\[([a-z]+)\s+"(.*)"\]$/i) {
+ $section = join('.',lc $1,$2);
+ } elsif (/^\s*([a-z][a-z0-9]+)\s*=\s*(.*?)\s*$/i) {
+ push @{$data->{join('.',$section,lc $1)}}, $2;
+ } else {
+ deny "bad config file line $. in $br:$fn";
+ }
+ }
+ close I;
+}
+
+sub all_new_committers () {
+ local $ENV{GIT_DIR} = $git_dir;
+ $ENV{GIT_DIR} = $new_commit_check if -d $new_commit_check;
+
+ info "Getting committers of new commits.";
+ my %used;
+ open(T,'-|','git','rev-list','--pretty=raw',$new,'--not','--all');
+ while (<T>) {
+ next unless s/^committer //;
+ chop;
+ s/>.*$/>/;
+ info "Found $_." unless $used{$_}++;
+ }
+ close T;
+ info "No new commits." unless %used;
+ keys %used;
+}
+
+sub all_new_taggers () {
+ my %exists;
+ open(T,'-|','git','for-each-ref','--format=%(objectname)','refs/tags');
+ while (<T>) {
+ chop;
+ $exists{$_} = 1;
+ }
+ close T;
+
+ info "Getting taggers of new tags.";
+ my %used;
+ my $obj = $new;
+ my $obj_type = $new_type;
+ while ($obj_type eq 'tag') {
+ last if $exists{$obj};
+ $obj_type = '';
+ open(T,'-|','git','cat-file','tag',$obj);
+ while (<T>) {
+ chop;
+ if (/^object ([a-z0-9]{40})$/) {
+ $obj = $1;
+ } elsif (/^type (.+)$/) {
+ $obj_type = $1;
+ } elsif (s/^tagger //) {
+ s/>.*$/>/;
+ info "Found $_." unless $used{$_}++;
+ last;
+ }
+ }
+ close T;
+ }
+ info "No new tags." unless %used;
+ keys %used;
+}
+
+sub check_committers (@) {
+ my @bad;
+ foreach (@_) { push @bad, $_ unless $user_committer{$_}; }
+ if (@bad) {
+ print STDERR "\n";
+ print STDERR "You are not $_.\n" foreach (sort @bad);
+ deny "You cannot push changes not committed by you.";
+ }
+}
+
+sub load_diff ($) {
+ my $base = shift;
+ my $d = $diff_cache{$base};
+ unless ($d) {
+ local $/ = "\0";
+ my %this_diff;
+ if ($base =~ /^0{40}$/) {
+ # Don't load the diff at all; we are making the
+ # branch and have no base to compare to in this
+ # case. A file level ACL makes no sense in this
+ # context. Having an empty diff will allow the
+ # branch creation.
+ #
+ } else {
+ open(T,'-|','git','diff-tree',
+ '-r','--name-status','-z',
+ $base,$new) or return undef;
+ while (<T>) {
+ my $op = $_;
+ chop $op;
+
+ my $path = <T>;
+ chop $path;
+
+ $this_diff{$path} = $op;
+ }
+ close T or return undef;
+ }
+ $d = \%this_diff;
+ $diff_cache{$base} = $d;
+ }
+ return $d;
+}
+
+deny "No GIT_DIR inherited from caller" unless $git_dir;
+deny "Need a ref name" unless $ref;
+deny "Refusing funny ref $ref" unless $ref =~ s,^refs/,,;
+deny "Bad old value $old" unless $old =~ /^[a-z0-9]{40}$/;
+deny "Bad new value $new" unless $new =~ /^[a-z0-9]{40}$/;
+deny "Cannot determine who you are." unless $this_user;
+grant "No change requested." if $old eq $new;
+
+$repository_name = File::Spec->rel2abs($git_dir);
+$repository_name =~ m,/([^/]+)(?:\.git|/\.git)$,;
+$repository_name = $1;
+info "Updating in '$repository_name'.";
+
+my $op;
+if ($old =~ /^0{40}$/) { $op = 'C'; }
+elsif ($new =~ /^0{40}$/) { $op = 'D'; }
+else { $op = 'R'; }
+
+# This is really an update (fast-forward) if the
+# merge base of $old and $new is $old.
+#
+$op = 'U' if ($op eq 'R'
+ && $ref =~ m,^heads/,
+ && $old eq git_value('merge-base',$old,$new));
+
+# Load the user's ACL file. Expand groups (user.memberof) one level.
+{
+ my %data = ('user.committer' => []);
+ parse_config(\%data,$acl_git,$acl_branch,"external/$repository_name.acl");
+
+ %data = (
+ 'user.committer' => $data{'user.committer'},
+ 'user.memberof' => [],
+ );
+ parse_config(\%data,$acl_git,$acl_branch,"users/$this_user.acl");
+
+ %user_committer = map {$_ => $_} @{$data{'user.committer'}};
+ my $rule_key = "repository.$repository_name.allow";
+ my $rules = $data{$rule_key} || [];
+
+ foreach my $group (@{$data{'user.memberof'}}) {
+ my %g;
+ parse_config(\%g,$acl_git,$acl_branch,"groups/$group.acl");
+ my $group_rules = $g{$rule_key};
+ push @$rules, @$group_rules if $group_rules;
+ }
+
+RULE:
+ foreach (@$rules) {
+ while (/\${user\.([a-z][a-zA-Z0-9]+)}/) {
+ my $k = lc $1;
+ my $v = $data{"user.$k"};
+ next RULE unless defined $v;
+ next RULE if @$v != 1;
+ next RULE unless defined $v->[0];
+ s/\${user\.$k}/$v->[0]/g;
+ }
+
+ if (/^([AMD ]+)\s+of\s+([^\s]+)\s+for\s+([^\s]+)\s+diff\s+([^\s]+)$/) {
+ my ($ops, $pth, $ref, $bst) = ($1, $2, $3, $4);
+ $ops =~ s/ //g;
+ $pth =~ s/\\\\/\\/g;
+ $ref =~ s/\\\\/\\/g;
+ push @path_rules, [$ops, $pth, $ref, $bst];
+ } elsif (/^([AMD ]+)\s+of\s+([^\s]+)\s+for\s+([^\s]+)$/) {
+ my ($ops, $pth, $ref) = ($1, $2, $3);
+ $ops =~ s/ //g;
+ $pth =~ s/\\\\/\\/g;
+ $ref =~ s/\\\\/\\/g;
+ push @path_rules, [$ops, $pth, $ref, $old];
+ } elsif (/^([CDRU ]+)\s+for\s+([^\s]+)$/) {
+ my $ops = $1;
+ my $ref = $2;
+ $ops =~ s/ //g;
+ $ref =~ s/\\\\/\\/g;
+ push @allow_rules, [$ops, $ref];
+ } elsif (/^for\s+([^\s]+)$/) {
+ # Mentioned, but nothing granted?
+ } elsif (/^[^\s]+$/) {
+ s/\\\\/\\/g;
+ push @allow_rules, ['U', $_];
+ }
+ }
+}
+
+if ($op ne 'D') {
+ $new_type = git_value('cat-file','-t',$new);
+
+ if ($ref =~ m,^heads/,) {
+ deny "$ref must be a commit." unless $new_type eq 'commit';
+ } elsif ($ref =~ m,^tags/,) {
+ deny "$ref must be an annotated tag." unless $new_type eq 'tag';
+ }
+
+ check_committers (all_new_committers);
+ check_committers (all_new_taggers) if $new_type eq 'tag';
+}
+
+info "$this_user wants $op for $ref";
+foreach my $acl_entry (@allow_rules) {
+ my ($acl_ops, $acl_n) = @$acl_entry;
+ next unless $acl_ops =~ /^[CDRU]+$/; # Uhh.... shouldn't happen.
+ next unless $acl_n;
+ next unless $op =~ /^[$acl_ops]$/;
+ next unless match_string $acl_n, $ref;
+
+ # Don't test path rules on branch deletes.
+ #
+ grant "Allowed by: $acl_ops for $acl_n" if $op eq 'D';
+
+ # Aggregate matching path rules; allow if there aren't
+ # any matching this ref.
+ #
+ my %pr;
+ foreach my $p_entry (@path_rules) {
+ my ($p_ops, $p_n, $p_ref, $p_bst) = @$p_entry;
+ next unless $p_ref;
+ push @{$pr{$p_bst}}, $p_entry if match_string $p_ref, $ref;
+ }
+ grant "Allowed by: $acl_ops for $acl_n" unless %pr;
+
+ # Allow only if all changes against a single base are
+ # allowed by file path rules.
+ #
+ my @bad;
+ foreach my $p_bst (keys %pr) {
+ my $diff_ref = load_diff $p_bst;
+ deny "Cannot difference trees." unless ref $diff_ref;
+
+ my %fd = %$diff_ref;
+ foreach my $p_entry (@{$pr{$p_bst}}) {
+ my ($p_ops, $p_n, $p_ref, $p_bst) = @$p_entry;
+ next unless $p_ops =~ /^[AMD]+$/;
+ next unless $p_n;
+
+ foreach my $f_n (keys %fd) {
+ my $f_op = $fd{$f_n};
+ next unless $f_op;
+ next unless $f_op =~ /^[$p_ops]$/;
+ delete $fd{$f_n} if match_string $p_n, $f_n;
+ }
+ last unless %fd;
+ }
+
+ if (%fd) {
+ push @bad, [$p_bst, \%fd];
+ } else {
+ # All changes relative to $p_bst were allowed.
+ #
+ grant "Allowed by: $acl_ops for $acl_n diff $p_bst";
+ }
+ }
+
+ foreach my $bad_ref (@bad) {
+ my ($p_bst, $fd) = @$bad_ref;
+ print STDERR "\n";
+ print STDERR "Not allowed to make the following changes:\n";
+ print STDERR "(base: $p_bst)\n";
+ foreach my $f_n (sort keys %$fd) {
+ print STDERR " $fd->{$f_n} $f_n\n";
+ }
+ }
+ deny "You are not permitted to $op $ref";
+}
+close A;
+deny "You are not permitted to $op $ref";