git-send-email.perlon commit Paper bag fix diff invocation in 'git stash show' (e7187e4)
   1#!/usr/bin/perl -w
   2#
   3# Copyright 2002,2005 Greg Kroah-Hartman <greg@kroah.com>
   4# Copyright 2005 Ryan Anderson <ryan@michonline.com>
   5#
   6# GPL v2 (See COPYING)
   7#
   8# Ported to support git "mbox" format files by Ryan Anderson <ryan@michonline.com>
   9#
  10# Sends a collection of emails to the given email addresses, disturbingly fast.
  11#
  12# Supports two formats:
  13# 1. mbox format files (ignoring most headers and MIME formatting - this is designed for sending patches)
  14# 2. The original format support by Greg's script:
  15#    first line of the message is who to CC,
  16#    and second line is the subject of the message.
  17#
  18
  19use strict;
  20use warnings;
  21use Term::ReadLine;
  22use Getopt::Long;
  23use Data::Dumper;
  24use Term::ANSIColor;
  25use Git;
  26
  27$SIG{INT} = sub { print color("reset"), "\n"; exit };
  28
  29package FakeTerm;
  30sub new {
  31        my ($class, $reason) = @_;
  32        return bless \$reason, shift;
  33}
  34sub readline {
  35        my $self = shift;
  36        die "Cannot use readline on FakeTerm: $$self";
  37}
  38package main;
  39
  40
  41sub usage {
  42        print <<EOT;
  43git-send-email [options] <file | directory>...
  44Options:
  45   --from         Specify the "From:" line of the email to be sent.
  46
  47   --to           Specify the primary "To:" line of the email.
  48
  49   --cc           Specify an initial "Cc:" list for the entire series
  50                  of emails.
  51
  52   --cc-cmd       Specify a command to execute per file which adds
  53                  per file specific cc address entries
  54
  55   --bcc          Specify a list of email addresses that should be Bcc:
  56                  on all the emails.
  57
  58   --compose      Use \$GIT_EDITOR, core.editor, \$EDITOR, or \$VISUAL to edit
  59                  an introductory message for the patch series.
  60
  61   --subject      Specify the initial "Subject:" line.
  62                  Only necessary if --compose is also set.  If --compose
  63                  is not set, this will be prompted for.
  64
  65   --in-reply-to  Specify the first "In-Reply-To:" header line.
  66                  Only used if --compose is also set.  If --compose is not
  67                  set, this will be prompted for.
  68
  69   --chain-reply-to If set, the replies will all be to the previous
  70                  email sent, rather than to the first email sent.
  71                  Defaults to on.
  72
  73   --signed-off-cc Automatically add email addresses that appear in
  74                 Signed-off-by: or Cc: lines to the cc: list. Defaults to on.
  75
  76   --smtp-server  If set, specifies the outgoing SMTP server to use.
  77                  Defaults to localhost.
  78
  79   --suppress-from Suppress sending emails to yourself if your address
  80                  appears in a From: line. Defaults to off.
  81
  82   --thread       Specify that the "In-Reply-To:" header should be set on all
  83                  emails. Defaults to on.
  84
  85   --quiet        Make git-send-email less verbose.  One line per email
  86                  should be all that is output.
  87
  88   --dry-run      Do everything except actually send the emails.
  89
  90   --envelope-sender    Specify the envelope sender used to send the emails.
  91
  92EOT
  93        exit(1);
  94}
  95
  96# most mail servers generate the Date: header, but not all...
  97sub format_2822_time {
  98        my ($time) = @_;
  99        my @localtm = localtime($time);
 100        my @gmttm = gmtime($time);
 101        my $localmin = $localtm[1] + $localtm[2] * 60;
 102        my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
 103        if ($localtm[0] != $gmttm[0]) {
 104                die "local zone differs from GMT by a non-minute interval\n";
 105        }
 106        if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
 107                $localmin += 1440;
 108        } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 109                $localmin -= 1440;
 110        } elsif ($gmttm[6] != $localtm[6]) {
 111                die "local time offset greater than or equal to 24 hours\n";
 112        }
 113        my $offset = $localmin - $gmtmin;
 114        my $offhour = $offset / 60;
 115        my $offmin = abs($offset % 60);
 116        if (abs($offhour) >= 24) {
 117                die ("local time offset greater than or equal to 24 hours\n");
 118        }
 119
 120        return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 121                       qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 122                       $localtm[3],
 123                       qw(Jan Feb Mar Apr May Jun
 124                          Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 125                       $localtm[5]+1900,
 126                       $localtm[2],
 127                       $localtm[1],
 128                       $localtm[0],
 129                       ($offset >= 0) ? '+' : '-',
 130                       abs($offhour),
 131                       $offmin,
 132                       );
 133}
 134
 135my $have_email_valid = eval { require Email::Valid; 1 };
 136my $smtp;
 137
 138sub unique_email_list(@);
 139sub cleanup_compose_files();
 140
 141# Constants (essentially)
 142my $compose_filename = ".msg.$$";
 143
 144# Variables we fill in automatically, or via prompting:
 145my (@to,@cc,@initial_cc,@bcclist,@xh,
 146        $initial_reply_to,$initial_subject,@files,$author,$sender,$compose,$time);
 147
 148my $smtp_server;
 149my $envelope_sender;
 150
 151# Example reply to:
 152#$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 153
 154my $repo = Git->repository();
 155my $term = eval {
 156        new Term::ReadLine 'git-send-email';
 157};
 158if ($@) {
 159        $term = new FakeTerm "$@: going non-interactive";
 160}
 161
 162# Behavior modification variables
 163my ($quiet, $dry_run) = (0, 0);
 164
 165# Variables with corresponding config settings
 166my ($thread, $chain_reply_to, $suppress_from, $signed_off_cc, $cc_cmd);
 167
 168my %config_settings = (
 169    "thread" => [\$thread, 1],
 170    "chainreplyto" => [\$chain_reply_to, 1],
 171    "suppressfrom" => [\$suppress_from, 0],
 172    "signedoffcc" => [\$signed_off_cc, 1],
 173    "cccmd" => [\$cc_cmd, ""],
 174);
 175
 176foreach my $setting (keys %config_settings) {
 177    my $config = $repo->config_bool("sendemail.$setting");
 178    ${$config_settings{$setting}->[0]} = (defined $config) ? $config : $config_settings{$setting}->[1];
 179}
 180
 181@bcclist = $repo->config('sendemail.bcc');
 182if (!@bcclist or !$bcclist[0]) {
 183    @bcclist = ();
 184}
 185
 186# Begin by accumulating all the variables (defined above), that we will end up
 187# needing, first, from the command line:
 188
 189my $rc = GetOptions("sender|from=s" => \$sender,
 190                    "in-reply-to=s" => \$initial_reply_to,
 191                    "subject=s" => \$initial_subject,
 192                    "to=s" => \@to,
 193                    "cc=s" => \@initial_cc,
 194                    "bcc=s" => \@bcclist,
 195                    "chain-reply-to!" => \$chain_reply_to,
 196                    "smtp-server=s" => \$smtp_server,
 197                    "compose" => \$compose,
 198                    "quiet" => \$quiet,
 199                    "cc-cmd=s" => \$cc_cmd,
 200                    "suppress-from!" => \$suppress_from,
 201                    "signed-off-cc|signed-off-by-cc!" => \$signed_off_cc,
 202                    "dry-run" => \$dry_run,
 203                    "envelope-sender=s" => \$envelope_sender,
 204                    "thread!" => \$thread,
 205         );
 206
 207unless ($rc) {
 208    usage();
 209}
 210
 211# Verify the user input
 212
 213foreach my $entry (@to) {
 214        die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 215}
 216
 217foreach my $entry (@initial_cc) {
 218        die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 219}
 220
 221foreach my $entry (@bcclist) {
 222        die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 223}
 224
 225# Now, let's fill any that aren't set in with defaults:
 226
 227my ($repoauthor) = $repo->ident_person('author');
 228my ($repocommitter) = $repo->ident_person('committer');
 229
 230my %aliases;
 231my @alias_files = $repo->config('sendemail.aliasesfile');
 232my $aliasfiletype = $repo->config('sendemail.aliasfiletype');
 233my %parse_alias = (
 234        # multiline formats can be supported in the future
 235        mutt => sub { my $fh = shift; while (<$fh>) {
 236                if (/^\s*alias\s+(\S+)\s+(.*)$/) {
 237                        my ($alias, $addr) = ($1, $2);
 238                        $addr =~ s/#.*$//; # mutt allows # comments
 239                         # commas delimit multiple addresses
 240                        $aliases{$alias} = [ split(/\s*,\s*/, $addr) ];
 241                }}},
 242        mailrc => sub { my $fh = shift; while (<$fh>) {
 243                if (/^alias\s+(\S+)\s+(.*)$/) {
 244                        # spaces delimit multiple addresses
 245                        $aliases{$1} = [ split(/\s+/, $2) ];
 246                }}},
 247        pine => sub { my $fh = shift; while (<$fh>) {
 248                if (/^(\S+)\t.*\t(.*)$/) {
 249                        $aliases{$1} = [ split(/\s*,\s*/, $2) ];
 250                }}},
 251        gnus => sub { my $fh = shift; while (<$fh>) {
 252                if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 253                        $aliases{$1} = [ $2 ];
 254                }}}
 255);
 256
 257if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 258        foreach my $file (@alias_files) {
 259                open my $fh, '<', $file or die "opening $file: $!\n";
 260                $parse_alias{$aliasfiletype}->($fh);
 261                close $fh;
 262        }
 263}
 264
 265($sender) = expand_aliases($sender) if defined $sender;
 266
 267my $prompting = 0;
 268if (!defined $sender) {
 269        $sender = $repoauthor || $repocommitter;
 270        do {
 271                $_ = $term->readline("Who should the emails appear to be from? [$sender] ");
 272        } while (!defined $_);
 273
 274        $sender = $_ if ($_);
 275        print "Emails will be sent from: ", $sender, "\n";
 276        $prompting++;
 277}
 278
 279if (!@to) {
 280        do {
 281                $_ = $term->readline("Who should the emails be sent to? ",
 282                                "");
 283        } while (!defined $_);
 284        my $to = $_;
 285        push @to, split /,/, $to;
 286        $prompting++;
 287}
 288
 289sub expand_aliases {
 290        my @cur = @_;
 291        my @last;
 292        do {
 293                @last = @cur;
 294                @cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
 295        } while (join(',',@cur) ne join(',',@last));
 296        return @cur;
 297}
 298
 299@to = expand_aliases(@to);
 300@to = (map { sanitize_address($_) } @to);
 301@initial_cc = expand_aliases(@initial_cc);
 302@bcclist = expand_aliases(@bcclist);
 303
 304if (!defined $initial_subject && $compose) {
 305        do {
 306                $_ = $term->readline("What subject should the emails start with? ",
 307                        $initial_subject);
 308        } while (!defined $_);
 309        $initial_subject = $_;
 310        $prompting++;
 311}
 312
 313if ($thread && !defined $initial_reply_to && $prompting) {
 314        do {
 315                $_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ",
 316                        $initial_reply_to);
 317        } while (!defined $_);
 318
 319        $initial_reply_to = $_;
 320        $initial_reply_to =~ s/^\s+<?/</;
 321        $initial_reply_to =~ s/>?\s+$/>/;
 322}
 323
 324if (!$smtp_server) {
 325        $smtp_server = $repo->config('sendemail.smtpserver');
 326}
 327if (!$smtp_server) {
 328        foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 329                if (-x $_) {
 330                        $smtp_server = $_;
 331                        last;
 332                }
 333        }
 334        $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 335}
 336
 337if ($compose) {
 338        # Note that this does not need to be secure, but we will make a small
 339        # effort to have it be unique
 340        open(C,">",$compose_filename)
 341                or die "Failed to open for writing $compose_filename: $!";
 342        print C "From $sender # This line is ignored.\n";
 343        printf C "Subject: %s\n\n", $initial_subject;
 344        printf C <<EOT;
 345GIT: Please enter your email below.
 346GIT: Lines beginning in "GIT: " will be removed.
 347GIT: Consider including an overall diffstat or table of contents
 348GIT: for the patch you are writing.
 349
 350EOT
 351        close(C);
 352
 353        my $editor = $ENV{GIT_EDITOR} || $repo->config("core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 354        system($editor, $compose_filename);
 355
 356        open(C2,">",$compose_filename . ".final")
 357                or die "Failed to open $compose_filename.final : " . $!;
 358
 359        open(C,"<",$compose_filename)
 360                or die "Failed to open $compose_filename : " . $!;
 361
 362        while(<C>) {
 363                next if m/^GIT: /;
 364                print C2 $_;
 365        }
 366        close(C);
 367        close(C2);
 368
 369        do {
 370                $_ = $term->readline("Send this email? (y|n) ");
 371        } while (!defined $_);
 372
 373        if (uc substr($_,0,1) ne 'Y') {
 374                cleanup_compose_files();
 375                exit(0);
 376        }
 377
 378        @files = ($compose_filename . ".final");
 379}
 380
 381
 382# Now that all the defaults are set, process the rest of the command line
 383# arguments and collect up the files that need to be processed.
 384for my $f (@ARGV) {
 385        if (-d $f) {
 386                opendir(DH,$f)
 387                        or die "Failed to opendir $f: $!";
 388
 389                push @files, grep { -f $_ } map { +$f . "/" . $_ }
 390                                sort readdir(DH);
 391
 392        } elsif (-f $f) {
 393                push @files, $f;
 394
 395        } else {
 396                print STDERR "Skipping $f - not found.\n";
 397        }
 398}
 399
 400if (@files) {
 401        unless ($quiet) {
 402                print $_,"\n" for (@files);
 403        }
 404} else {
 405        print STDERR "\nNo patch files specified!\n\n";
 406        usage();
 407}
 408
 409# Variables we set as part of the loop over files
 410our ($message_id, %mail, $subject, $reply_to, $references, $message);
 411
 412sub extract_valid_address {
 413        my $address = shift;
 414        my $local_part_regexp = '[^<>"\s@]+';
 415        my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
 416
 417        # check for a local address:
 418        return $address if ($address =~ /^($local_part_regexp)$/);
 419
 420        $address =~ s/^\s*<(.*)>\s*$/$1/;
 421        if ($have_email_valid) {
 422                return scalar Email::Valid->address($address);
 423        } else {
 424                # less robust/correct than the monster regexp in Email::Valid,
 425                # but still does a 99% job, and one less dependency
 426                $address =~ /($local_part_regexp\@$domain_regexp)/;
 427                return $1;
 428        }
 429}
 430
 431# Usually don't need to change anything below here.
 432
 433# we make a "fake" message id by taking the current number
 434# of seconds since the beginning of Unix time and tacking on
 435# a random number to the end, in case we are called quicker than
 436# 1 second since the last time we were called.
 437
 438# We'll setup a template for the message id, using the "from" address:
 439
 440my ($message_id_stamp, $message_id_serial);
 441sub make_message_id
 442{
 443        my $uniq;
 444        if (!defined $message_id_stamp) {
 445                $message_id_stamp = sprintf("%s-%s", time, $$);
 446                $message_id_serial = 0;
 447        }
 448        $message_id_serial++;
 449        $uniq = "$message_id_stamp-$message_id_serial";
 450
 451        my $du_part;
 452        for ($sender, $repocommitter, $repoauthor) {
 453                $du_part = extract_valid_address(sanitize_address($_));
 454                last if (defined $du_part and $du_part ne '');
 455        }
 456        if (not defined $du_part or $du_part eq '') {
 457                use Sys::Hostname qw();
 458                $du_part = 'user@' . Sys::Hostname::hostname();
 459        }
 460        my $message_id_template = "<%s-git-send-email-%s>";
 461        $message_id = sprintf($message_id_template, $uniq, $du_part);
 462        #print "new message id = $message_id\n"; # Was useful for debugging
 463}
 464
 465
 466
 467$time = time - scalar $#files;
 468
 469sub unquote_rfc2047 {
 470        local ($_) = @_;
 471        if (s/=\?utf-8\?q\?(.*)\?=/$1/g) {
 472                s/_/ /g;
 473                s/=([0-9A-F]{2})/chr(hex($1))/eg;
 474        }
 475        return "$_";
 476}
 477
 478# use the simplest quoting being able to handle the recipient
 479sub sanitize_address
 480{
 481        my ($recipient) = @_;
 482        my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 483
 484        if (not $recipient_name) {
 485                return "$recipient";
 486        }
 487
 488        # if recipient_name is already quoted, do nothing
 489        if ($recipient_name =~ /^(".*"|=\?utf-8\?q\?.*\?=)$/) {
 490                return $recipient;
 491        }
 492
 493        # rfc2047 is needed if a non-ascii char is included
 494        if ($recipient_name =~ /[^[:ascii:]]/) {
 495                $recipient_name =~ s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 496                $recipient_name =~ s/(.*)/=\?utf-8\?q\?$1\?=/;
 497        }
 498
 499        # double quotes are needed if specials or CTLs are included
 500        elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 501                $recipient_name =~ s/(["\\\r])/\\$1/;
 502                $recipient_name = "\"$recipient_name\"";
 503        }
 504
 505        return "$recipient_name $recipient_addr";
 506
 507}
 508
 509sub send_message
 510{
 511        my @recipients = unique_email_list(@to);
 512        @cc = (map { sanitize_address($_) } @cc);
 513        my $to = join (",\n\t", @recipients);
 514        @recipients = unique_email_list(@recipients,@cc,@bcclist);
 515        @recipients = (map { extract_valid_address($_) } @recipients);
 516        my $date = format_2822_time($time++);
 517        my $gitversion = '@@GIT_VERSION@@';
 518        if ($gitversion =~ m/..GIT_VERSION../) {
 519            $gitversion = Git::version();
 520        }
 521
 522        my $cc = join(", ", unique_email_list(@cc));
 523        my $ccline = "";
 524        if ($cc ne '') {
 525                $ccline = "\nCc: $cc";
 526        }
 527        my $sanitized_sender = sanitize_address($sender);
 528        make_message_id();
 529
 530        my $header = "From: $sanitized_sender
 531To: $to${ccline}
 532Subject: $subject
 533Date: $date
 534Message-Id: $message_id
 535X-Mailer: git-send-email $gitversion
 536";
 537        if ($thread && $reply_to) {
 538
 539                $header .= "In-Reply-To: $reply_to\n";
 540                $header .= "References: $references\n";
 541        }
 542        if (@xh) {
 543                $header .= join("\n", @xh) . "\n";
 544        }
 545
 546        my @sendmail_parameters = ('-i', @recipients);
 547        my $raw_from = $sanitized_sender;
 548        $raw_from = $envelope_sender if (defined $envelope_sender);
 549        $raw_from = extract_valid_address($raw_from);
 550        unshift (@sendmail_parameters,
 551                        '-f', $raw_from) if(defined $envelope_sender);
 552
 553        if ($dry_run) {
 554                # We don't want to send the email.
 555        } elsif ($smtp_server =~ m#^/#) {
 556                my $pid = open my $sm, '|-';
 557                defined $pid or die $!;
 558                if (!$pid) {
 559                        exec($smtp_server, @sendmail_parameters) or die $!;
 560                }
 561                print $sm "$header\n$message";
 562                close $sm or die $?;
 563        } else {
 564                require Net::SMTP;
 565                $smtp ||= Net::SMTP->new( $smtp_server );
 566                $smtp->mail( $raw_from ) or die $smtp->message;
 567                $smtp->to( @recipients ) or die $smtp->message;
 568                $smtp->data or die $smtp->message;
 569                $smtp->datasend("$header\n$message") or die $smtp->message;
 570                $smtp->dataend() or die $smtp->message;
 571                $smtp->ok or die "Failed to send $subject\n".$smtp->message;
 572        }
 573        if ($quiet) {
 574                printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
 575        } else {
 576                print (($dry_run ? "Dry-" : "")."OK. Log says:\nDate: $date\n");
 577                if ($smtp_server !~ m#^/#) {
 578                        print "Server: $smtp_server\n";
 579                        print "MAIL FROM:<$raw_from>\n";
 580                        print "RCPT TO:".join(',',(map { "<$_>" } @recipients))."\n";
 581                } else {
 582                        print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
 583                }
 584                print "From: $sanitized_sender\nSubject: $subject\nCc: $cc\nTo: $to\n\n";
 585                if ($smtp) {
 586                        print "Result: ", $smtp->code, ' ',
 587                                ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
 588                } else {
 589                        print "Result: OK\n";
 590                }
 591        }
 592}
 593
 594$reply_to = $initial_reply_to;
 595$references = $initial_reply_to || '';
 596$subject = $initial_subject;
 597
 598foreach my $t (@files) {
 599        open(F,"<",$t) or die "can't open file $t";
 600
 601        my $author = undef;
 602        @cc = @initial_cc;
 603        @xh = ();
 604        my $input_format = undef;
 605        my $header_done = 0;
 606        $message = "";
 607        while(<F>) {
 608                if (!$header_done) {
 609                        if (/^From /) {
 610                                $input_format = 'mbox';
 611                                next;
 612                        }
 613                        chomp;
 614                        if (!defined $input_format && /^[-A-Za-z]+:\s/) {
 615                                $input_format = 'mbox';
 616                        }
 617
 618                        if (defined $input_format && $input_format eq 'mbox') {
 619                                if (/^Subject:\s+(.*)$/) {
 620                                        $subject = $1;
 621
 622                                } elsif (/^(Cc|From):\s+(.*)$/) {
 623                                        if (unquote_rfc2047($2) eq $sender) {
 624                                                next if ($suppress_from);
 625                                        }
 626                                        elsif ($1 eq 'From') {
 627                                                $author = unquote_rfc2047($2);
 628                                        }
 629                                        printf("(mbox) Adding cc: %s from line '%s'\n",
 630                                                $2, $_) unless $quiet;
 631                                        push @cc, $2;
 632                                }
 633                                elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
 634                                        push @xh, $_;
 635                                }
 636
 637                        } else {
 638                                # In the traditional
 639                                # "send lots of email" format,
 640                                # line 1 = cc
 641                                # line 2 = subject
 642                                # So let's support that, too.
 643                                $input_format = 'lots';
 644                                if (@cc == 0) {
 645                                        printf("(non-mbox) Adding cc: %s from line '%s'\n",
 646                                                $_, $_) unless $quiet;
 647
 648                                        push @cc, $_;
 649
 650                                } elsif (!defined $subject) {
 651                                        $subject = $_;
 652                                }
 653                        }
 654
 655                        # A whitespace line will terminate the headers
 656                        if (m/^\s*$/) {
 657                                $header_done = 1;
 658                        }
 659                } else {
 660                        $message .=  $_;
 661                        if (/^(Signed-off-by|Cc): (.*)$/i && $signed_off_cc) {
 662                                my $c = $2;
 663                                chomp $c;
 664                                push @cc, $c;
 665                                printf("(sob) Adding cc: %s from line '%s'\n",
 666                                        $c, $_) unless $quiet;
 667                        }
 668                }
 669        }
 670        close F;
 671
 672        if ($cc_cmd ne "") {
 673                open(F, "$cc_cmd $t |")
 674                        or die "(cc-cmd) Could not execute '$cc_cmd'";
 675                while(<F>) {
 676                        my $c = $_;
 677                        $c =~ s/^\s*//g;
 678                        $c =~ s/\n$//g;
 679                        push @cc, $c;
 680                        printf("(cc-cmd) Adding cc: %s from: '%s'\n",
 681                                $c, $cc_cmd) unless $quiet;
 682                }
 683                close F
 684                        or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
 685        }
 686
 687        if (defined $author) {
 688                $message = "From: $author\n\n$message";
 689        }
 690
 691        send_message();
 692
 693        # set up for the next message
 694        if ($chain_reply_to || !defined $reply_to || length($reply_to) == 0) {
 695                $reply_to = $message_id;
 696                if (length $references > 0) {
 697                        $references .= "\n $message_id";
 698                } else {
 699                        $references = "$message_id";
 700                }
 701        }
 702}
 703
 704if ($compose) {
 705        cleanup_compose_files();
 706}
 707
 708sub cleanup_compose_files() {
 709        unlink($compose_filename, $compose_filename . ".final");
 710
 711}
 712
 713$smtp->quit if $smtp;
 714
 715sub unique_email_list(@) {
 716        my %seen;
 717        my @emails;
 718
 719        foreach my $entry (@_) {
 720                if (my $clean = extract_valid_address($entry)) {
 721                        $seen{$clean} ||= 0;
 722                        next if $seen{$clean}++;
 723                        push @emails, $entry;
 724                } else {
 725                        print STDERR "W: unable to extract a valid address",
 726                                        " from: $entry\n";
 727                }
 728        }
 729        return @emails;
 730}