1  #!/bin/sh
   2  #
   3  # An example hook script to block unannotated tags from entering.
   4  # Called by "git receive-pack" with arguments: refname sha1-old sha1-new
   5  #
   6  # To enable this hook, rename this file to "update".
   7  #
   8  # Config
   9  # ------
  10  # hooks.allowunannotated
  11  #   This boolean sets whether unannotated tags will be allowed into the
  12  #   repository.  By default they won't be.
  13  # hooks.allowdeletetag
  14  #   This boolean sets whether deleting tags will be allowed in the
  15  #   repository.  By default they won't be.
  16  # hooks.allowmodifytag
  17  #   This boolean sets whether a tag may be modified after creation. By default
  18  #   it won't be.
  19  # hooks.allowdeletebranch
  20  #   This boolean sets whether deleting branches will be allowed in the
  21  #   repository.  By default they won't be.
  22  # hooks.denycreatebranch
  23  #   This boolean sets whether remotely creating branches will be denied
  24  #   in the repository.  By default this is allowed.
  25  #
  26  
  27  # --- Command line
  28  refname="$1"
  29  oldrev="$2"
  30  newrev="$3"
  31  
  32  # --- Safety check
  33  if [ -z "$GIT_DIR" ]; then
  34  	echo "Don't run this script from the command line." >&2
  35  	echo " (if you want, you could supply GIT_DIR then run" >&2
  36  	echo "  $0 <ref> <oldrev> <newrev>)" >&2
  37  	exit 1
  38  fi
  39  
  40  if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then
  41  	echo "usage: $0 <ref> <oldrev> <newrev>" >&2
  42  	exit 1
  43  fi
  44  
  45  # --- Config
  46  allowunannotated=$(git config --type=bool hooks.allowunannotated)
  47  allowdeletebranch=$(git config --type=bool hooks.allowdeletebranch)
  48  denycreatebranch=$(git config --type=bool hooks.denycreatebranch)
  49  allowdeletetag=$(git config --type=bool hooks.allowdeletetag)
  50  allowmodifytag=$(git config --type=bool hooks.allowmodifytag)
  51  
  52  # check for no description
  53  projectdesc=$(sed -e '1q' "$GIT_DIR/description")
  54  case "$projectdesc" in
  55  "Unnamed repository"* | "")
  56  	echo "*** Project description file hasn't been set" >&2
  57  	exit 1
  58  	;;
  59  esac
  60  
  61  # --- Check types
  62  # if $newrev is 0000...0000, it's a commit to delete a ref.
  63  zero=$(git hash-object --stdin </dev/null | tr '[0-9a-f]' '0')
  64  if [ "$newrev" = "$zero" ]; then
  65  	newrev_type=delete
  66  else
  67  	newrev_type=$(git cat-file -t $newrev)
  68  fi
  69  
  70  case "$refname","$newrev_type" in
  71  	refs/tags/*,commit)
  72  		# un-annotated tag
  73  		short_refname=${refname##refs/tags/}
  74  		if [ "$allowunannotated" != "true" ]; then
  75  			echo "*** The un-annotated tag, $short_refname, is not allowed in this repository" >&2
  76  			echo "*** Use 'git tag [ -a | -s ]' for tags you want to propagate." >&2
  77  			exit 1
  78  		fi
  79  		;;
  80  	refs/tags/*,delete)
  81  		# delete tag
  82  		if [ "$allowdeletetag" != "true" ]; then
  83  			echo "*** Deleting a tag is not allowed in this repository" >&2
  84  			exit 1
  85  		fi
  86  		;;
  87  	refs/tags/*,tag)
  88  		# annotated tag
  89  		if [ "$allowmodifytag" != "true" ] && git rev-parse $refname > /dev/null 2>&1
  90  		then
  91  			echo "*** Tag '$refname' already exists." >&2
  92  			echo "*** Modifying a tag is not allowed in this repository." >&2
  93  			exit 1
  94  		fi
  95  		;;
  96  	refs/heads/*,commit)
  97  		# branch
  98  		if [ "$oldrev" = "$zero" -a "$denycreatebranch" = "true" ]; then
  99  			echo "*** Creating a branch is not allowed in this repository" >&2
 100  			exit 1
 101  		fi
 102  		;;
 103  	refs/heads/*,delete)
 104  		# delete branch
 105  		if [ "$allowdeletebranch" != "true" ]; then
 106  			echo "*** Deleting a branch is not allowed in this repository" >&2
 107  			exit 1
 108  		fi
 109  		;;
 110  	refs/remotes/*,commit)
 111  		# tracking branch
 112  		;;
 113  	refs/remotes/*,delete)
 114  		# delete tracking branch
 115  		if [ "$allowdeletebranch" != "true" ]; then
 116  			echo "*** Deleting a tracking branch is not allowed in this repository" >&2
 117  			exit 1
 118  		fi
 119  		;;
 120  	*)
 121  		# Anything else (is there anything else?)
 122  		echo "*** Update hook: unknown type of update to ref $refname of type $newrev_type" >&2
 123  		exit 1
 124  		;;
 125  esac
 126  
 127  # --- Finished
 128  exit 0
 129