scripts/maint/pre-push.git-hook

   1 #!/bin/bash
   2
   3 # git pre-push hook script to:
   4 # 1) prevent "fixup!" and "squash!" commit from ending up in master, release-*
   5 #    or maint-*
   6 # 2) Disallow pushing branches other than master, release-*
   7 #    and maint-* to origin (e.g. gitweb.torproject.org).
   8 #
   9 # To install this script, copy it into .git/hooks/pre-push path in your
  10 # local copy of git repository. Make sure it has permission to execute.
  11 #
  12 # The following sample script was used as starting point:
  13 # https://github.com/git/git/blob/master/templates/hooks--pre-push.sample
  14
  15 echo "Running pre-push hook"
  16
  17 z40=0000000000000000000000000000000000000000
  18
  19 remote="$1"
  20
  21 ref_is_upstream_branch() {
  22         if [ "$1" == "refs/heads/master" ] ||
  23                 [[ "$1" == refs/heads/release-* ]] ||
  24                 [[ "$1" == refs/heads/maint-* ]]
  25         then
  26                 return 1
  27         fi
  28 }
  29
  30 # shellcheck disable=SC2034
  31 while read -r local_ref local_sha remote_ref remote_sha
  32 do
  33         if [ "$local_sha" = $z40 ]
  34         then
  35                 # Handle delete
  36                 :
  37         else
  38                 if [ "$remote_sha" = $z40 ]
  39                 then
  40                         # New branch, examine all commits
  41                         range="$local_sha"
  42                 else
  43                         # Update to existing branch, examine new commits
  44                         range="$remote_sha..$local_sha"
  45                 fi
  46
  47                 if (ref_is_upstream_branch "$local_ref" == 0 ||
  48                         ref_is_upstream_branch "$remote_ref"  == 0) &&
  49                         [ "$local_ref" != "$remote_ref" ]
  50                 then
  51                         if [ "$remote" == "origin" ]
  52                         then
  53                                 echo >&2 "Not pushing: $local_ref to $remote_ref"
  54                                 echo >&2 "If you really want to push this, use --no-verify."
  55                                 exit 1
  56                         else
  57                                 continue
  58                         fi
  59                 fi
  60
  61                 # Check for fixup! commit
  62                 commit=$(git rev-list -n 1 --grep '^fixup!' "$range")
  63                 if [ -n "$commit" ]
  64                 then
  65                         echo >&2 "Found fixup! commit in $local_ref, not pushing"
  66                         echo >&2 "If you really want to push this, use --no-verify."
  67                         exit 1
  68                 fi
  69
  70                 # Check for squash! commit
  71                 commit=$(git rev-list -n 1 --grep '^squash!' "$range")
  72                 if [ -n "$commit" ]
  73                 then
  74                         echo >&2 "Found squash! commit in $local_ref, not pushing"
  75                         echo >&2 "If you really want to push this, use --no-verify."
  76                         exit 1
  77                 fi
  78         fi
  79 done
  80
  81 exit 0
  82