taskd/mail.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2007 Andy Parkins
   4 #
   5 # An example hook script to mail out commit update information.  This hook
   6 # sends emails listing new revisions to the repository introduced by the
   7 # change being reported.  The rule is that (for branch updates) each commit
   8 # will appear on one email and one email only.
   9 #
  10 # =================
  11 # This is Girocco-customized version. No matter what is said below, it has
  12 # following changes:
  13 # * Calling with arguments is same as giving them on stdin.
  14 # * Optional fourth parameter is project name, used at most places instead
  15 #   of description.
  16 # * Optional fifth parameter is email sender.
  17 # * Load shlib.
  18 # * Default subject prefix is site name.
  19 # * Unsubscribe instructions in email footer.
  20 # * Default showrev includes gitweb link and show -C.
  21 # * Nicer subject line.
  22 # * Limit mail size to 256kb.
  23 # =================
  24 #
  25 # This hook is stored in the contrib/hooks directory.  Your distribution
  26 # will have put this somewhere standard.  You should make this script
  27 # executable then link to it in the repository you would like to use it in.
  28 # For example, on debian the hook is stored in
  29 # /usr/share/doc/git-core/contrib/hooks/post-receive-email:
  30 #
  31 #  chmod a+x post-receive-email
  32 #  cd /path/to/your/repository.git
  33 #  ln -sf /usr/share/doc/git-core/contrib/hooks/post-receive-email hooks/post-receive
  34 #
  35 # This hook script assumes it is enabled on the central repository of a
  36 # project, with all users pushing only to it and not between each other.  It
  37 # will still work if you don't operate in that style, but it would become
  38 # possible for the email to be from someone other than the person doing the
  39 # push.
  40 #
  41 # Config
  42 # ------
  43 # hooks.mailinglist
  44 #   This is the list that all pushes will go to; leave it blank to not send
  45 #   emails for every ref update.
  46 # hooks.announcelist
  47 #   This is the list that all pushes of annotated tags will go to.  Leave it
  48 #   blank to default to the mailinglist field.  The announce emails lists
  49 #   the short log summary of the changes since the last annotated tag.
  50 # hooks.envelopesender
  51 #   If set then the -f option is passed to sendmail to allow the envelope
  52 #   sender address to be set
  53 # hooks.emailprefix
  54 #   All emails have their subjects prefixed with this prefix, or "[SCM]"
  55 #   if emailprefix is unset, to aid filtering
  56 # hooks.showrev
  57 #   The shell command used to format each revision in the email, with
  58 #   "%s" replaced with the commit id.  Defaults to "git rev-list -1
  59 #   --pretty %s", displaying the commit id, author, date and log
  60 #   message.  To list full patches separated by a blank line, you
  61 #   could set this to "git show -C %s; echo".
  62 #   To list a gitweb/cgit URL *and* a full patch for each change set, use this:
  63 #     "t=%s; printf 'http://.../?id=%%s' \$t; echo;echo; git show -C \$t; echo"
  64 #   Be careful if "..." contains things that will be expanded by shell "eval"
  65 #   or printf.
  66 #
  67 # Notes
  68 # -----
  69 # All emails include the headers "X-Git-Refname", "X-Git-Oldrev",
  70 # "X-Git-Newrev", and "X-Git-Reftype" to enable fine tuned filtering and
  71 # give information for debugging.
  72 #
  73
  74 # ---------------------------- Functions
  75
  76 #
  77 # Top level email generation function.  This decides what type of update
  78 # this is and calls the appropriate body-generation routine after outputting
  79 # the common header
  80 #
  81 # Note this function doesn't actually generate any email output, that is
  82 # taken care of by the functions it calls:
  83 #  - generate_email_header
  84 #  - generate_create_XXXX_email
  85 #  - generate_update_XXXX_email
  86 #  - generate_delete_XXXX_email
  87 #  - generate_email_footer
  88 #
  89 generate_email()
  90 {
  91         # --- Arguments
  92         oldrev=$(git rev-parse $1)
  93         newrev=$(git rev-parse $2)
  94         refname="$3"
  95
  96         # --- Interpret
  97         # 0000->1234 (create)
  98         # 1234->2345 (update)
  99         # 2345->0000 (delete)
 100         if expr "$oldrev" : '0*$' >/dev/null
 101         then
 102                 change_type="create"
 103         else
 104                 if expr "$newrev" : '0*$' >/dev/null
 105                 then
 106                         change_type="delete"
 107                 else
 108                         change_type="update"
 109                 fi
 110         fi
 111
 112         # --- Get the revision types
 113         newrev_type=$(git cat-file -t $newrev 2> /dev/null)
 114         oldrev_type=$(git cat-file -t "$oldrev" 2> /dev/null)
 115         case "$change_type" in
 116         create|update)
 117                 rev="$newrev"
 118                 rev_type="$newrev_type"
 119                 ;;
 120         delete)
 121                 rev="$oldrev"
 122                 rev_type="$oldrev_type"
 123                 ;;
 124         esac
 125
 126         # The revision type tells us what type the commit is, combined with
 127         # the location of the ref we can decide between
 128         #  - working branch
 129         #  - tracking branch
 130         #  - unannoted tag
 131         #  - annotated tag
 132         case "$refname","$rev_type" in
 133                 refs/tags/*,commit)
 134                         # un-annotated tag
 135                         refname_type="tag"
 136                         short_refname=${refname##refs/tags/}
 137                         ;;
 138                 refs/tags/*,tag)
 139                         # annotated tag
 140                         refname_type="annotated tag"
 141                         short_refname=${refname##refs/tags/}
 142                         # change recipients
 143                         if [ -n "$announcerecipients" ]; then
 144                                 recipients="$announcerecipients"
 145                         fi
 146                         ;;
 147                 refs/heads/*,commit)
 148                         # branch
 149                         refname_type="branch"
 150                         short_refname=${refname##refs/heads/}
 151                         ;;
 152                 refs/remotes/*,commit)
 153                         # tracking branch
 154                         refname_type="tracking branch"
 155                         short_refname=${refname##refs/remotes/}
 156                         echo >&2 "*** Push-update of tracking branch, $refname"
 157                         echo >&2 "***  - no email generated."
 158                         echo ""
 159                         exit 0
 160                         ;;
 161                 refs/mob/*,commit|refs/mob/*,tag)
 162                         # personal mob ref
 163                         refname_type="personal mob ref"
 164                         short_refname=${refname##refs/mob/}
 165                         echo >&2 "*** Push-update of personal mob ref, $refname"
 166                         echo >&2 "***  - no email generated."
 167                         echo ""
 168                         exit 0
 169                         ;;
 170                 *)
 171                         # Anything else (is there anything else?)
 172                         echo >&2 "*** Unknown type of update to $refname ($rev_type)"
 173                         echo >&2 "***  - no email generated"
 174                         exit 1
 175                         ;;
 176         esac
 177
 178         # Check if we've got anyone to send to
 179         if [ -z "$recipients" ]; then
 180                 case "$refname_type" in
 181                         "annotated tag")
 182                                 config_name="hooks.announcelist"
 183                                 ;;
 184                         *)
 185                                 config_name="hooks.mailinglist"
 186                                 ;;
 187                 esac
 188                 echo >&2 "*** $config_name is not set so no email will be sent"
 189                 echo >&2 "*** for $refname update $oldrev->$newrev"
 190                 echo ""
 191                 exit 0
 192         fi
 193
 194         # Email parameters
 195         # The email subject will contain the best description of the ref
 196         # that we can build from the parameters
 197         describe=$(git describe $rev 2>/dev/null)
 198         if [ -z "$describe" ]; then
 199                 describe=$rev
 200         fi
 201
 202         generate_email_header
 203
 204         # Call the correct body generation function
 205         fn_name=general
 206         case "$refname_type" in
 207         "tracking branch"|branch)
 208                 fn_name=branch
 209                 ;;
 210         "annotated tag")
 211                 fn_name=atag
 212                 ;;
 213         esac
 214         generate_${change_type}_${fn_name}_email
 215
 216         generate_email_footer
 217 }
 218
 219 generate_email_header()
 220 {
 221         # --- Email (all stdout will be the email)
 222         # Generate header
 223         if [ -n "$emailsender" ]; then
 224                 echo "From: $emailsender"
 225         fi
 226         cat <<-EOF
 227         To: $recipients
 228         Subject: ${emailprefix}$projectname $refname_type $short_refname ${change_type}d: $describe
 229         EOF
 230         [ -z "$emailextraheader" ] || echo "$emailextraheader"
 231         cat <<-EOF
 232         X-Git-Refname: $refname
 233         X-Git-Reftype: $refname_type
 234         X-Git-Oldrev: $oldrev
 235         X-Git-Newrev: $newrev
 236
 237         This is an automated email from the git hooks/post-receive script. It was
 238         generated because a ref change was pushed to the repository containing
 239         the project $projectname.
 240
 241         The $refname_type, $short_refname has been ${change_type}d
 242         EOF
 243 }
 244
 245 generate_email_footer()
 246 {
 247         SPACE=" "
 248         cat <<-EOF
 249
 250
 251         $cfg_name automatic notification. Contact project admin $projectowner
 252         if you want to unsubscribe, or site admin $cfg_admin if you receive
 253         no reply.
 254         --${SPACE}
 255         $projectboth
 256         EOF
 257 }
 258
 259 # --------------- Branches
 260
 261 #
 262 # Called for the creation of a branch
 263 #
 264 generate_create_branch_email()
 265 {
 266         # This is a new branch and so oldrev is not valid
 267         echo "        at  $newrev ($newrev_type)"
 268         echo ""
 269
 270         echo $LOGBEGIN
 271         show_new_revisions
 272         echo $LOGEND
 273 }
 274
 275 #
 276 # Called for the change of a pre-existing branch
 277 #
 278 generate_update_branch_email()
 279 {
 280         # Consider this:
 281         #   1 --- 2 --- O --- X --- 3 --- 4 --- N
 282         #
 283         # O is $oldrev for $refname
 284         # N is $newrev for $refname
 285         # X is a revision pointed to by some other ref, for which we may
 286         #   assume that an email has already been generated.
 287         # In this case we want to issue an email containing only revisions
 288         # 3, 4, and N.  Given (almost) by
 289         #
 290         #  git rev-list N ^O --not --all
 291         #
 292         # The reason for the "almost", is that the "--not --all" will take
 293         # precedence over the "N", and effectively will translate to
 294         #
 295         #  git rev-list N ^O ^X ^N
 296         #
 297         # So, we need to build up the list more carefully.  git rev-parse
 298         # will generate a list of revs that may be fed into git rev-list.
 299         # We can get it to make the "--not --all" part and then filter out
 300         # the "^N" with:
 301         #
 302         #  git rev-parse --not --all | grep -v N
 303         #
 304         # Then, using the --stdin switch to git rev-list we have effectively
 305         # manufactured
 306         #
 307         #  git rev-list N ^O ^X
 308         #
 309         # This leaves a problem when someone else updates the repository
 310         # while this script is running.  Their new value of the ref we're
 311         # working on would be included in the "--not --all" output; and as
 312         # our $newrev would be an ancestor of that commit, it would exclude
 313         # all of our commits.  What we really want is to exclude the current
 314         # value of $refname from the --not list, rather than N itself.  So:
 315         #
 316         #  git rev-parse --not --all | grep -v $(git rev-parse $refname)
 317         #
 318         # Get's us to something pretty safe (apart from the small time
 319         # between refname being read, and git rev-parse running - for that,
 320         # I give up)
 321         #
 322         #
 323         # Next problem, consider this:
 324         #   * --- B --- * --- O ($oldrev)
 325         #          \
 326         #           * --- X --- * --- N ($newrev)
 327         #
 328         # That is to say, there is no guarantee that oldrev is a strict
 329         # subset of newrev (it would have required a --force, but that's
 330         # allowed).  So, we can't simply say rev-list $oldrev..$newrev.
 331         # Instead we find the common base of the two revs and list from
 332         # there.
 333         #
 334         # As above, we need to take into account the presence of X; if
 335         # another branch is already in the repository and points at some of
 336         # the revisions that we are about to output - we don't want them.
 337         # The solution is as before: git rev-parse output filtered.
 338         #
 339         # Finally, tags: 1 --- 2 --- O --- T --- 3 --- 4 --- N
 340         #
 341         # Tags pushed into the repository generate nice shortlog emails that
 342         # summarise the commits between them and the previous tag.  However,
 343         # those emails don't include the full commit messages that we output
 344         # for a branch update.  Therefore we still want to output revisions
 345         # that have been output on a tag email.
 346         #
 347         # Luckily, git rev-parse includes just the tool.  Instead of using
 348         # "--all" we use "--branches"; this has the added benefit that
 349         # "remotes/" will be ignored as well.
 350
 351         # List all of the revisions that were removed by this update, in a
 352         # fast forward update, this list will be empty, because rev-list O
 353         # ^N is empty.  For a non fast forward, O ^N is the list of removed
 354         # revisions
 355         fast_forward=""
 356         rev=""
 357         for rev in $(git rev-list $newrev..$oldrev)
 358         do
 359                 revtype=$(git cat-file -t "$rev")
 360                 echo "  discards  $rev ($revtype)"
 361         done
 362         if [ -z "$rev" ]; then
 363                 fast_forward=1
 364         fi
 365
 366         # List all the revisions from baserev to newrev in a kind of
 367         # "table-of-contents"; note this list can include revisions that
 368         # have already had notification emails and is present to show the
 369         # full detail of the change from rolling back the old revision to
 370         # the base revision and then forward to the new revision
 371         for rev in $(git rev-list $oldrev..$newrev)
 372         do
 373                 revtype=$(git cat-file -t "$rev")
 374                 echo "       via  $rev ($revtype)"
 375         done
 376
 377         if [ "$fast_forward" ]; then
 378                 echo "      from  $oldrev ($oldrev_type)"
 379         else
 380                 #  1. Existing revisions were removed.  In this case newrev
 381                 #     is a subset of oldrev - this is the reverse of a
 382                 #     fast-forward, a rewind
 383                 #  2. New revisions were added on top of an old revision,
 384                 #     this is a rewind and addition.
 385
 386                 # (1) certainly happened, (2) possibly.  When (2) hasn't
 387                 # happened, we set a flag to indicate that no log printout
 388                 # is required.
 389
 390                 echo ""
 391
 392                 # Find the common ancestor of the old and new revisions and
 393                 # compare it with newrev
 394                 baserev=$(git merge-base $oldrev $newrev)
 395                 rewind_only=""
 396                 if [ "$baserev" = "$newrev" ]; then
 397                         echo "This update discarded existing revisions and left the branch pointing at"
 398                         echo "a previous point in the repository history."
 399                         echo ""
 400                         echo " * -- * -- N ($newrev)"
 401                         echo "            \\"
 402                         echo "             O -- O -- O ($oldrev)"
 403                         echo ""
 404                         echo "The removed revisions are not necessarilly gone - if another reference"
 405                         echo "still refers to them they will stay in the repository."
 406                         rewind_only=1
 407                 else
 408                         echo "This update added new revisions after undoing existing revisions.  That is"
 409                         echo "to say, the old revision is not a strict subset of the new revision.  This"
 410                         echo "situation occurs when you --force push a change and generate a repository"
 411                         echo "containing something like this:"
 412                         echo ""
 413                         echo " * -- * -- B -- O -- O -- O ($oldrev)"
 414                         echo "            \\"
 415                         echo "             N -- N -- N ($newrev)"
 416                         echo ""
 417                         echo "When this happens we assume that you've already had alert emails for all"
 418                         echo "of the O revisions, and so we here report only the revisions in the N"
 419                         echo "branch from the common base, B."
 420                 fi
 421         fi
 422
 423         echo ""
 424         if [ -z "$rewind_only" ]; then
 425                 echo "Those revisions listed above that are new to this repository have"
 426                 echo "not appeared on any other notification email; so we list those"
 427                 echo "revisions in full, below."
 428
 429                 echo ""
 430                 echo $LOGBEGIN
 431                 show_new_revisions
 432
 433                 # XXX: Need a way of detecting whether git rev-list actually
 434                 # outputted anything, so that we can issue a "no new
 435                 # revisions added by this update" message
 436
 437                 echo $LOGEND
 438         else
 439                 echo "No new revisions were added by this update."
 440         fi
 441
 442         # The diffstat is shown from the old revision to the new revision.
 443         # This is to show the truth of what happened in this change.
 444         # There's no point showing the stat from the base to the new
 445         # revision because the base is effectively a random revision at this
 446         # point - the user will be interested in what this revision changed
 447         # - including the undoing of previous revisions in the case of
 448         # non-fast forward updates.
 449         echo ""
 450         echo "Summary of changes:"
 451         git diff-tree --stat --summary --find-copies-harder $oldrev..$newrev
 452 }
 453
 454 #
 455 # Called for the deletion of a branch
 456 #
 457 generate_delete_branch_email()
 458 {
 459         echo "       was  $oldrev"
 460         echo ""
 461         echo $LOGEND
 462         git show -s --pretty=oneline $oldrev
 463         echo $LOGEND
 464 }
 465
 466 # --------------- Annotated tags
 467
 468 #
 469 # Called for the creation of an annotated tag
 470 #
 471 generate_create_atag_email()
 472 {
 473         echo "        at  $newrev ($newrev_type)"
 474
 475         generate_atag_email
 476 }
 477
 478 #
 479 # Called for the update of an annotated tag (this is probably a rare event
 480 # and may not even be allowed)
 481 #
 482 generate_update_atag_email()
 483 {
 484         echo "        to  $newrev ($newrev_type)"
 485         echo "      from  $oldrev (which is now obsolete)"
 486
 487         generate_atag_email
 488 }
 489
 490 #
 491 # Called when an annotated tag is created or changed
 492 #
 493 generate_atag_email()
 494 {
 495         # Use git for-each-ref to pull out the individual fields from the
 496         # tag
 497         eval $(git for-each-ref --shell --format='
 498         tagobject=%(*objectname)
 499         tagtype=%(*objecttype)
 500         tagger=%(taggername)
 501         tagged=%(taggerdate)' $refname
 502         )
 503
 504         echo "   tagging  $tagobject ($tagtype)"
 505         case "$tagtype" in
 506         commit)
 507
 508                 # If the tagged object is a commit, then we assume this is a
 509                 # release, and so we calculate which tag this tag is
 510                 # replacing
 511                 prevtag=$(git describe --abbrev=0 $newrev^ 2>/dev/null)
 512
 513                 if [ -n "$prevtag" ]; then
 514                         echo "  replaces  $prevtag"
 515                 fi
 516                 ;;
 517         *)
 518                 echo "    length  $(git cat-file -s $tagobject) bytes"
 519                 ;;
 520         esac
 521         echo " tagged by  $tagger"
 522         echo "        on  $tagged"
 523
 524         echo ""
 525         echo $LOGBEGIN
 526
 527         # Show the content of the tag message; this might contain a change
 528         # log or release notes so is worth displaying.
 529         git cat-file tag $newrev | sed -e '1,/^$/d'
 530
 531         echo ""
 532         case "$tagtype" in
 533         commit)
 534                 # Only commit tags make sense to have rev-list operations
 535                 # performed on them
 536                 if [ -n "$prevtag" ]; then
 537                         # Show changes since the previous release
 538                         git rev-list --pretty=short "$prevtag..$newrev" | git shortlog
 539                 else
 540                         # No previous tag, show all the changes since time
 541                         # began
 542                         git rev-list --pretty=short $newrev | git shortlog
 543                 fi
 544                 ;;
 545         *)
 546                 # XXX: Is there anything useful we can do for non-commit
 547                 # objects?
 548                 ;;
 549         esac
 550
 551         echo $LOGEND
 552 }
 553
 554 #
 555 # Called for the deletion of an annotated tag
 556 #
 557 generate_delete_atag_email()
 558 {
 559         echo "       was  $oldrev"
 560         echo ""
 561         echo $LOGEND
 562         git show -s --pretty=oneline $oldrev
 563         echo $LOGEND
 564 }
 565
 566 # --------------- General references
 567
 568 #
 569 # Called when any other type of reference is created (most likely a
 570 # non-annotated tag)
 571 #
 572 generate_create_general_email()
 573 {
 574         echo "        at  $newrev ($newrev_type)"
 575
 576         generate_general_email
 577 }
 578
 579 #
 580 # Called when any other type of reference is updated (most likely a
 581 # non-annotated tag)
 582 #
 583 generate_update_general_email()
 584 {
 585         echo "        to  $newrev ($newrev_type)"
 586         echo "      from  $oldrev"
 587
 588         generate_general_email
 589 }
 590
 591 #
 592 # Called for creation or update of any other type of reference
 593 #
 594 generate_general_email()
 595 {
 596         # Unannotated tags are more about marking a point than releasing a
 597         # version; therefore we don't do the shortlog summary that we do for
 598         # annotated tags above - we simply show that the point has been
 599         # marked, and print the log message for the marked point for
 600         # reference purposes
 601         #
 602         # Note this section also catches any other reference type (although
 603         # there aren't any) and deals with them in the same way.
 604
 605         echo ""
 606         if [ "$newrev_type" = "commit" ]; then
 607                 echo $LOGBEGIN
 608                 git show --no-color --root -s --pretty=medium $newrev
 609                 echo $LOGEND
 610         else
 611                 # What can we do here?  The tag marks an object that is not
 612                 # a commit, so there is no log for us to display.  It's
 613                 # probably not wise to output git cat-file as it could be a
 614                 # binary blob.  We'll just say how big it is
 615                 echo "$newrev is a $newrev_type, and is $(git cat-file -s $newrev) bytes long."
 616         fi
 617 }
 618
 619 #
 620 # Called for the deletion of any other type of reference
 621 #
 622 generate_delete_general_email()
 623 {
 624         echo "       was  $oldrev"
 625         echo ""
 626         echo $LOGEND
 627         git show -s --pretty=oneline $oldrev
 628         echo $LOGEND
 629 }
 630
 631
 632 # --------------- Miscellaneous utilities
 633
 634 #
 635 # Show new revisions as the user would like to see them in the email.
 636 #
 637 show_new_revisions()
 638 {
 639         # This shows all log entries that are not already covered by
 640         # another ref - i.e. commits that are now accessible from this
 641         # ref that were previously not accessible
 642         # (see generate_update_branch_email for the explanation of this
 643         # command)
 644
 645         # Revision range passed to rev-list differs for new vs. updated
 646         # branches.
 647         if [ "$change_type" = create ]
 648         then
 649                 # Show all revisions exclusive to this (new) branch.
 650                 revspec=$newrev
 651         else
 652                 # Branch update; show revisions not part of $oldrev.
 653                 revspec=$oldrev..$newrev
 654         fi
 655
 656         other_branches=$(git for-each-ref --format='%(refname)' refs/heads/ |
 657             grep -F -v $refname)
 658         git rev-parse --not $other_branches |
 659 #       if [ -z "$custom_showrev" ]
 660 #       then
 661 #               git rev-list --pretty --stdin $revspec
 662 #       else
 663                 git rev-list --stdin $revspec |
 664                 while read onerev
 665                 do
 666                         if [ -n "$custom_showrev" ]; then
 667                                 eval $(printf "$custom_showrev" $onerev)
 668                         else
 669                                 echo "$cfg_gitweburl/$projectname/commit/$onerev"
 670                                 echo
 671                                 git show -C $onerev
 672                                 echo
 673                         fi
 674                 done
 675 #       fi
 676 }
 677
 678
 679 size_limit()
 680 {
 681         size=0
 682         while IFS= read line; do
 683                 size=$((size+${#line}))
 684                 if [ $size -gt $1 ]; then
 685                         echo "...e-mail trimmed, has been too large."
 686                         break
 687                 fi
 688                 echo "$line"
 689         done
 690 }
 691
 692
 693 send_mail()
 694 {
 695         if ! IFS= read header; then
 696                 exit 1
 697         fi
 698         if [ -z "$header" ]; then
 699                 exit 0
 700         fi
 701         { echo "$header"; cat; } |
 702         if [ -n "$envelopesender" ]; then
 703                 /usr/sbin/sendmail -t -f "$envelopesender"
 704         else
 705                 /usr/sbin/sendmail -t
 706         fi
 707 }
 708
 709 # ---------------------------- main()
 710
 711 # --- Constants
 712 LOGBEGIN="- Log -----------------------------------------------------------------"
 713 LOGEND="-----------------------------------------------------------------------"
 714
 715 # --- Config
 716 . @basedir@/shlib.sh
 717
 718 # Set GIT_DIR either from the working directory, or from the environment
 719 # variable.
 720 GIT_DIR=$(git rev-parse --git-dir 2>/dev/null)
 721 if [ -z "$GIT_DIR" ]; then
 722         echo >&2 "fatal: post-receive: GIT_DIR not set"
 723         exit 1
 724 fi
 725
 726 projectdesc=$(sed -ne '1p' "$GIT_DIR/description")
 727 # Check if the description is unchanged from it's default, and shorten it to
 728 # a more manageable length if it is
 729 if expr "$projectdesc" : "Unnamed repository.*$" >/dev/null
 730 then
 731         projectdesc="UNNAMED PROJECT"
 732 fi
 733
 734 projectname="$4"
 735 if [ -n "$projectname" ]; then
 736         projectname="$projectname.git"
 737         projectboth="$projectname (\"$projectdesc\")"
 738         projectowner="$(config_get owner)"
 739 else
 740         projectname="$projectdesc"
 741         projectboth="$projectdesc"
 742 fi
 743
 744 emailsender="$5"
 745 emailextraheader="$6"
 746
 747 recipients=$(git config hooks.mailinglist)
 748 announcerecipients=$(git config hooks.announcelist)
 749 envelopesender=$(git config hooks.envelopesender)
 750 emailprefix=$(git config hooks.emailprefix || echo "[$cfg_name] ")
 751 custom_showrev=$(git config hooks.showrev)
 752
 753 # --- Main loop
 754 # Allow dual mode: run from the command line just like the update hook, or
 755 # if no arguments are given then run as a hook script
 756 if [ -n "$1" -a -n "$2" -a -n "$3" ]; then
 757         # Output to the terminal in command line mode - if someone wanted to
 758         # resend an email; they could redirect the output to sendmail
 759         # themselves
 760         generate_email $2 $3 $1 | size_limit $((256*1024)) | send_mail
 761 else
 762         while read oldrev newrev refname
 763         do
 764                 generate_email $oldrev $newrev $refname | size_limit $((256*1024)) | send_mail
 765         done
 766 fi