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                 *)
 162                         # Anything else (is there anything else?)
 163                         echo >&2 "*** Unknown type of update to $refname ($rev_type)"
 164                         echo >&2 "***  - no email generated"
 165                         exit 1
 166                         ;;
 167         esac
 168
 169         # Check if we've got anyone to send to
 170         if [ -z "$recipients" ]; then
 171                 case "$refname_type" in
 172                         "annotated tag")
 173                                 config_name="hooks.announcelist"
 174                                 ;;
 175                         *)
 176                                 config_name="hooks.mailinglist"
 177                                 ;;
 178                 esac
 179                 echo >&2 "*** $config_name is not set so no email will be sent"
 180                 echo >&2 "*** for $refname update $oldrev->$newrev"
 181                 echo ""
 182                 exit 0
 183         fi
 184
 185         # Email parameters
 186         # The email subject will contain the best description of the ref
 187         # that we can build from the parameters
 188         describe=$(git describe $rev 2>/dev/null)
 189         if [ -z "$describe" ]; then
 190                 describe=$rev
 191         fi
 192
 193         generate_email_header
 194
 195         # Call the correct body generation function
 196         fn_name=general
 197         case "$refname_type" in
 198         "tracking branch"|branch)
 199                 fn_name=branch
 200                 ;;
 201         "annotated tag")
 202                 fn_name=atag
 203                 ;;
 204         esac
 205         generate_${change_type}_${fn_name}_email
 206
 207         generate_email_footer
 208 }
 209
 210 generate_email_header()
 211 {
 212         # --- Email (all stdout will be the email)
 213         # Generate header
 214         if [ -n "$emailsender" ]; then
 215                 echo "From: $emailsender"
 216         fi
 217         cat <<-EOF
 218         To: $recipients
 219         Subject: ${emailprefix}$projectname $refname_type $short_refname ${change_type}d: $describe
 220         X-Git-Refname: $refname
 221         X-Git-Reftype: $refname_type
 222         X-Git-Oldrev: $oldrev
 223         X-Git-Newrev: $newrev
 224
 225         This is an automated email from the git hooks/post-receive script. It was
 226         generated because a ref change was pushed to the repository containing
 227         the project $projectname.
 228
 229         The $refname_type, $short_refname has been ${change_type}d
 230         EOF
 231 }
 232
 233 generate_email_footer()
 234 {
 235         SPACE=" "
 236         cat <<-EOF
 237
 238
 239         $cfg_name automatic notification. Contact project admin $projectowner
 240         if you want to unsubscribe, or site admin $cfg_admin if you receive
 241         no reply.
 242         --${SPACE}
 243         $projectboth
 244         EOF
 245 }
 246
 247 # --------------- Branches
 248
 249 #
 250 # Called for the creation of a branch
 251 #
 252 generate_create_branch_email()
 253 {
 254         # This is a new branch and so oldrev is not valid
 255         echo "        at  $newrev ($newrev_type)"
 256         echo ""
 257
 258         echo $LOGBEGIN
 259         show_new_revisions
 260         echo $LOGEND
 261 }
 262
 263 #
 264 # Called for the change of a pre-existing branch
 265 #
 266 generate_update_branch_email()
 267 {
 268         # Consider this:
 269         #   1 --- 2 --- O --- X --- 3 --- 4 --- N
 270         #
 271         # O is $oldrev for $refname
 272         # N is $newrev for $refname
 273         # X is a revision pointed to by some other ref, for which we may
 274         #   assume that an email has already been generated.
 275         # In this case we want to issue an email containing only revisions
 276         # 3, 4, and N.  Given (almost) by
 277         #
 278         #  git rev-list N ^O --not --all
 279         #
 280         # The reason for the "almost", is that the "--not --all" will take
 281         # precedence over the "N", and effectively will translate to
 282         #
 283         #  git rev-list N ^O ^X ^N
 284         #
 285         # So, we need to build up the list more carefully.  git rev-parse
 286         # will generate a list of revs that may be fed into git rev-list.
 287         # We can get it to make the "--not --all" part and then filter out
 288         # the "^N" with:
 289         #
 290         #  git rev-parse --not --all | grep -v N
 291         #
 292         # Then, using the --stdin switch to git rev-list we have effectively
 293         # manufactured
 294         #
 295         #  git rev-list N ^O ^X
 296         #
 297         # This leaves a problem when someone else updates the repository
 298         # while this script is running.  Their new value of the ref we're
 299         # working on would be included in the "--not --all" output; and as
 300         # our $newrev would be an ancestor of that commit, it would exclude
 301         # all of our commits.  What we really want is to exclude the current
 302         # value of $refname from the --not list, rather than N itself.  So:
 303         #
 304         #  git rev-parse --not --all | grep -v $(git rev-parse $refname)
 305         #
 306         # Get's us to something pretty safe (apart from the small time
 307         # between refname being read, and git rev-parse running - for that,
 308         # I give up)
 309         #
 310         #
 311         # Next problem, consider this:
 312         #   * --- B --- * --- O ($oldrev)
 313         #          \
 314         #           * --- X --- * --- N ($newrev)
 315         #
 316         # That is to say, there is no guarantee that oldrev is a strict
 317         # subset of newrev (it would have required a --force, but that's
 318         # allowed).  So, we can't simply say rev-list $oldrev..$newrev.
 319         # Instead we find the common base of the two revs and list from
 320         # there.
 321         #
 322         # As above, we need to take into account the presence of X; if
 323         # another branch is already in the repository and points at some of
 324         # the revisions that we are about to output - we don't want them.
 325         # The solution is as before: git rev-parse output filtered.
 326         #
 327         # Finally, tags: 1 --- 2 --- O --- T --- 3 --- 4 --- N
 328         #
 329         # Tags pushed into the repository generate nice shortlog emails that
 330         # summarise the commits between them and the previous tag.  However,
 331         # those emails don't include the full commit messages that we output
 332         # for a branch update.  Therefore we still want to output revisions
 333         # that have been output on a tag email.
 334         #
 335         # Luckily, git rev-parse includes just the tool.  Instead of using
 336         # "--all" we use "--branches"; this has the added benefit that
 337         # "remotes/" will be ignored as well.
 338
 339         # List all of the revisions that were removed by this update, in a
 340         # fast forward update, this list will be empty, because rev-list O
 341         # ^N is empty.  For a non fast forward, O ^N is the list of removed
 342         # revisions
 343         fast_forward=""
 344         rev=""
 345         for rev in $(git rev-list $newrev..$oldrev)
 346         do
 347                 revtype=$(git cat-file -t "$rev")
 348                 echo "  discards  $rev ($revtype)"
 349         done
 350         if [ -z "$rev" ]; then
 351                 fast_forward=1
 352         fi
 353
 354         # List all the revisions from baserev to newrev in a kind of
 355         # "table-of-contents"; note this list can include revisions that
 356         # have already had notification emails and is present to show the
 357         # full detail of the change from rolling back the old revision to
 358         # the base revision and then forward to the new revision
 359         for rev in $(git rev-list $oldrev..$newrev)
 360         do
 361                 revtype=$(git cat-file -t "$rev")
 362                 echo "       via  $rev ($revtype)"
 363         done
 364
 365         if [ "$fast_forward" ]; then
 366                 echo "      from  $oldrev ($oldrev_type)"
 367         else
 368                 #  1. Existing revisions were removed.  In this case newrev
 369                 #     is a subset of oldrev - this is the reverse of a
 370                 #     fast-forward, a rewind
 371                 #  2. New revisions were added on top of an old revision,
 372                 #     this is a rewind and addition.
 373
 374                 # (1) certainly happened, (2) possibly.  When (2) hasn't
 375                 # happened, we set a flag to indicate that no log printout
 376                 # is required.
 377
 378                 echo ""
 379
 380                 # Find the common ancestor of the old and new revisions and
 381                 # compare it with newrev
 382                 baserev=$(git merge-base $oldrev $newrev)
 383                 rewind_only=""
 384                 if [ "$baserev" = "$newrev" ]; then
 385                         echo "This update discarded existing revisions and left the branch pointing at"
 386                         echo "a previous point in the repository history."
 387                         echo ""
 388                         echo " * -- * -- N ($newrev)"
 389                         echo "            \\"
 390                         echo "             O -- O -- O ($oldrev)"
 391                         echo ""
 392                         echo "The removed revisions are not necessarilly gone - if another reference"
 393                         echo "still refers to them they will stay in the repository."
 394                         rewind_only=1
 395                 else
 396                         echo "This update added new revisions after undoing existing revisions.  That is"
 397                         echo "to say, the old revision is not a strict subset of the new revision.  This"
 398                         echo "situation occurs when you --force push a change and generate a repository"
 399                         echo "containing something like this:"
 400                         echo ""
 401                         echo " * -- * -- B -- O -- O -- O ($oldrev)"
 402                         echo "            \\"
 403                         echo "             N -- N -- N ($newrev)"
 404                         echo ""
 405                         echo "When this happens we assume that you've already had alert emails for all"
 406                         echo "of the O revisions, and so we here report only the revisions in the N"
 407                         echo "branch from the common base, B."
 408                 fi
 409         fi
 410
 411         echo ""
 412         if [ -z "$rewind_only" ]; then
 413                 echo "Those revisions listed above that are new to this repository have"
 414                 echo "not appeared on any other notification email; so we list those"
 415                 echo "revisions in full, below."
 416
 417                 echo ""
 418                 echo $LOGBEGIN
 419                 show_new_revisions
 420
 421                 # XXX: Need a way of detecting whether git rev-list actually
 422                 # outputted anything, so that we can issue a "no new
 423                 # revisions added by this update" message
 424
 425                 echo $LOGEND
 426         else
 427                 echo "No new revisions were added by this update."
 428         fi
 429
 430         # The diffstat is shown from the old revision to the new revision.
 431         # This is to show the truth of what happened in this change.
 432         # There's no point showing the stat from the base to the new
 433         # revision because the base is effectively a random revision at this
 434         # point - the user will be interested in what this revision changed
 435         # - including the undoing of previous revisions in the case of
 436         # non-fast forward updates.
 437         echo ""
 438         echo "Summary of changes:"
 439         git diff-tree --stat --summary --find-copies-harder $oldrev..$newrev
 440 }
 441
 442 #
 443 # Called for the deletion of a branch
 444 #
 445 generate_delete_branch_email()
 446 {
 447         echo "       was  $oldrev"
 448         echo ""
 449         echo $LOGEND
 450         git show -s --pretty=oneline $oldrev
 451         echo $LOGEND
 452 }
 453
 454 # --------------- Annotated tags
 455
 456 #
 457 # Called for the creation of an annotated tag
 458 #
 459 generate_create_atag_email()
 460 {
 461         echo "        at  $newrev ($newrev_type)"
 462
 463         generate_atag_email
 464 }
 465
 466 #
 467 # Called for the update of an annotated tag (this is probably a rare event
 468 # and may not even be allowed)
 469 #
 470 generate_update_atag_email()
 471 {
 472         echo "        to  $newrev ($newrev_type)"
 473         echo "      from  $oldrev (which is now obsolete)"
 474
 475         generate_atag_email
 476 }
 477
 478 #
 479 # Called when an annotated tag is created or changed
 480 #
 481 generate_atag_email()
 482 {
 483         # Use git for-each-ref to pull out the individual fields from the
 484         # tag
 485         eval $(git for-each-ref --shell --format='
 486         tagobject=%(*objectname)
 487         tagtype=%(*objecttype)
 488         tagger=%(taggername)
 489         tagged=%(taggerdate)' $refname
 490         )
 491
 492         echo "   tagging  $tagobject ($tagtype)"
 493         case "$tagtype" in
 494         commit)
 495
 496                 # If the tagged object is a commit, then we assume this is a
 497                 # release, and so we calculate which tag this tag is
 498                 # replacing
 499                 prevtag=$(git describe --abbrev=0 $newrev^ 2>/dev/null)
 500
 501                 if [ -n "$prevtag" ]; then
 502                         echo "  replaces  $prevtag"
 503                 fi
 504                 ;;
 505         *)
 506                 echo "    length  $(git cat-file -s $tagobject) bytes"
 507                 ;;
 508         esac
 509         echo " tagged by  $tagger"
 510         echo "        on  $tagged"
 511
 512         echo ""
 513         echo $LOGBEGIN
 514
 515         # Show the content of the tag message; this might contain a change
 516         # log or release notes so is worth displaying.
 517         git cat-file tag $newrev | sed -e '1,/^$/d'
 518
 519         echo ""
 520         case "$tagtype" in
 521         commit)
 522                 # Only commit tags make sense to have rev-list operations
 523                 # performed on them
 524                 if [ -n "$prevtag" ]; then
 525                         # Show changes since the previous release
 526                         git rev-list --pretty=short "$prevtag..$newrev" | git shortlog
 527                 else
 528                         # No previous tag, show all the changes since time
 529                         # began
 530                         git rev-list --pretty=short $newrev | git shortlog
 531                 fi
 532                 ;;
 533         *)
 534                 # XXX: Is there anything useful we can do for non-commit
 535                 # objects?
 536                 ;;
 537         esac
 538
 539         echo $LOGEND
 540 }
 541
 542 #
 543 # Called for the deletion of an annotated tag
 544 #
 545 generate_delete_atag_email()
 546 {
 547         echo "       was  $oldrev"
 548         echo ""
 549         echo $LOGEND
 550         git show -s --pretty=oneline $oldrev
 551         echo $LOGEND
 552 }
 553
 554 # --------------- General references
 555
 556 #
 557 # Called when any other type of reference is created (most likely a
 558 # non-annotated tag)
 559 #
 560 generate_create_general_email()
 561 {
 562         echo "        at  $newrev ($newrev_type)"
 563
 564         generate_general_email
 565 }
 566
 567 #
 568 # Called when any other type of reference is updated (most likely a
 569 # non-annotated tag)
 570 #
 571 generate_update_general_email()
 572 {
 573         echo "        to  $newrev ($newrev_type)"
 574         echo "      from  $oldrev"
 575
 576         generate_general_email
 577 }
 578
 579 #
 580 # Called for creation or update of any other type of reference
 581 #
 582 generate_general_email()
 583 {
 584         # Unannotated tags are more about marking a point than releasing a
 585         # version; therefore we don't do the shortlog summary that we do for
 586         # annotated tags above - we simply show that the point has been
 587         # marked, and print the log message for the marked point for
 588         # reference purposes
 589         #
 590         # Note this section also catches any other reference type (although
 591         # there aren't any) and deals with them in the same way.
 592
 593         echo ""
 594         if [ "$newrev_type" = "commit" ]; then
 595                 echo $LOGBEGIN
 596                 git show --no-color --root -s --pretty=medium $newrev
 597                 echo $LOGEND
 598         else
 599                 # What can we do here?  The tag marks an object that is not
 600                 # a commit, so there is no log for us to display.  It's
 601                 # probably not wise to output git cat-file as it could be a
 602                 # binary blob.  We'll just say how big it is
 603                 echo "$newrev is a $newrev_type, and is $(git cat-file -s $newrev) bytes long."
 604         fi
 605 }
 606
 607 #
 608 # Called for the deletion of any other type of reference
 609 #
 610 generate_delete_general_email()
 611 {
 612         echo "       was  $oldrev"
 613         echo ""
 614         echo $LOGEND
 615         git show -s --pretty=oneline $oldrev
 616         echo $LOGEND
 617 }
 618
 619
 620 # --------------- Miscellaneous utilities
 621
 622 #
 623 # Show new revisions as the user would like to see them in the email.
 624 #
 625 show_new_revisions()
 626 {
 627         # This shows all log entries that are not already covered by
 628         # another ref - i.e. commits that are now accessible from this
 629         # ref that were previously not accessible
 630         # (see generate_update_branch_email for the explanation of this
 631         # command)
 632
 633         # Revision range passed to rev-list differs for new vs. updated
 634         # branches.
 635         if [ "$change_type" = create ]
 636         then
 637                 # Show all revisions exclusive to this (new) branch.
 638                 revspec=$newrev
 639         else
 640                 # Branch update; show revisions not part of $oldrev.
 641                 revspec=$oldrev..$newrev
 642         fi
 643
 644         other_branches=$(git for-each-ref --format='%(refname)' refs/heads/ |
 645             grep -F -v $refname)
 646         git rev-parse --not $other_branches |
 647 #       if [ -z "$custom_showrev" ]
 648 #       then
 649 #               git rev-list --pretty --stdin $revspec
 650 #       else
 651                 git rev-list --stdin $revspec |
 652                 while read onerev
 653                 do
 654                         if [ -n "$custom_showrev" ]; then
 655                                 eval $(printf "$custom_showrev" $onerev)
 656                         else
 657                                 echo "$cfg_gitweburl/$projectname/commit/$onerev"
 658                                 echo
 659                                 git show -C $onerev
 660                                 echo
 661                         fi
 662                 done
 663 #       fi
 664 }
 665
 666
 667 size_limit()
 668 {
 669         size=0
 670         while IFS= read line; do
 671                 size=$((size+${#line}))
 672                 if [ $size -gt $1 ]; then
 673                         echo "...e-mail trimmed, has been too large."
 674                         break
 675                 fi
 676                 echo "$line"
 677         done
 678 }
 679
 680
 681 send_mail()
 682 {
 683         if ! IFS= read header; then
 684                 exit 1
 685         fi
 686         if [ -z "$header" ]; then
 687                 exit 0
 688         fi
 689         { echo "$header"; cat; } |
 690         if [ -n "$envelopesender" ]; then
 691                 /usr/sbin/sendmail -t -f "$envelopesender"
 692         else
 693                 /usr/sbin/sendmail -t
 694         fi
 695 }
 696
 697 # ---------------------------- main()
 698
 699 # --- Constants
 700 LOGBEGIN="- Log -----------------------------------------------------------------"
 701 LOGEND="-----------------------------------------------------------------------"
 702
 703 # --- Config
 704 . @basedir@/shlib.sh
 705
 706 # Set GIT_DIR either from the working directory, or from the environment
 707 # variable.
 708 GIT_DIR=$(git rev-parse --git-dir 2>/dev/null)
 709 if [ -z "$GIT_DIR" ]; then
 710         echo >&2 "fatal: post-receive: GIT_DIR not set"
 711         exit 1
 712 fi
 713
 714 projectdesc=$(sed -ne '1p' "$GIT_DIR/description")
 715 # Check if the description is unchanged from it's default, and shorten it to
 716 # a more manageable length if it is
 717 if expr "$projectdesc" : "Unnamed repository.*$" >/dev/null
 718 then
 719         projectdesc="UNNAMED PROJECT"
 720 fi
 721
 722 projectname="$4"
 723 if [ -n "$projectname" ]; then
 724         projectname="$projectname.git"
 725         projectboth="$projectname (\"$projectdesc\")"
 726         projectowner="$(config_get owner)"
 727 else
 728         projectname="$projectdesc"
 729         projectboth="$projectdesc"
 730 fi
 731
 732 emailsender="$5"
 733
 734 recipients=$(git config hooks.mailinglist)
 735 announcerecipients=$(git config hooks.announcelist)
 736 envelopesender=$(git config hooks.envelopesender)
 737 emailprefix=$(git config hooks.emailprefix || echo "[$cfg_name] ")
 738 custom_showrev=$(git config hooks.showrev)
 739
 740 # --- Main loop
 741 # Allow dual mode: run from the command line just like the update hook, or
 742 # if no arguments are given then run as a hook script
 743 if [ -n "$1" -a -n "$2" -a -n "$3" ]; then
 744         # Output to the terminal in command line mode - if someone wanted to
 745         # resend an email; they could redirect the output to sendmail
 746         # themselves
 747         generate_email $2 $3 $1 | size_limit $((256*1024)) | send_mail
 748 else
 749         while read oldrev newrev refname
 750         do
 751                 generate_email $oldrev $newrev $refname | size_limit $((256*1024)) | send_mail
 752         done
 753 fi