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 #
19 use strict;
20 use warnings;
21 use Term::ReadLine;
22 use Getopt::Long;
23 use Data::Dumper;
24 use Term::ANSIColor;
25 use Git;
27 $SIG{INT} = sub { print color("reset"), "\n"; exit };
29 package FakeTerm;
30 sub new {
31 my ($class, $reason) = @_;
32 return bless \$reason, shift;
33 }
34 sub readline {
35 my $self = shift;
36 die "Cannot use readline on FakeTerm: $$self";
37 }
38 package main;
41 sub usage {
42 print <<EOT;
43 git-send-email [options] <file | directory>...
44 Options:
45 --from Specify the "From:" line of the email to be sent.
47 --to Specify the primary "To:" line of the email.
49 --cc Specify an initial "Cc:" list for the entire series
50 of emails.
52 --cc-cmd Specify a command to execute per file which adds
53 per file specific cc address entries
55 --bcc Specify a list of email addresses that should be Bcc:
56 on all the emails.
58 --compose Use \$GIT_EDITOR, core.editor, \$EDITOR, or \$VISUAL to edit
59 an introductory message for the patch series.
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.
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.
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.
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.
76 --identity The configuration identity, a subsection to prioritise over
77 the default section.
79 --smtp-server If set, specifies the outgoing SMTP server to use.
80 Defaults to localhost.
82 --smtp-user The username for SMTP-AUTH.
84 --smtp-pass The password for SMTP-AUTH.
86 --smtp-ssl If set, connects to the SMTP server using SSL.
88 --suppress-from Suppress sending emails to yourself if your address
89 appears in a From: line. Defaults to off.
91 --thread Specify that the "In-Reply-To:" header should be set on all
92 emails. Defaults to on.
94 --quiet Make git-send-email less verbose. One line per email
95 should be all that is output.
97 --dry-run Do everything except actually send the emails.
99 --envelope-sender Specify the envelope sender used to send the emails.
101 EOT
102 exit(1);
103 }
105 # most mail servers generate the Date: header, but not all...
106 sub format_2822_time {
107 my ($time) = @_;
108 my @localtm = localtime($time);
109 my @gmttm = gmtime($time);
110 my $localmin = $localtm[1] + $localtm[2] * 60;
111 my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
112 if ($localtm[0] != $gmttm[0]) {
113 die "local zone differs from GMT by a non-minute interval\n";
114 }
115 if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
116 $localmin += 1440;
117 } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
118 $localmin -= 1440;
119 } elsif ($gmttm[6] != $localtm[6]) {
120 die "local time offset greater than or equal to 24 hours\n";
121 }
122 my $offset = $localmin - $gmtmin;
123 my $offhour = $offset / 60;
124 my $offmin = abs($offset % 60);
125 if (abs($offhour) >= 24) {
126 die ("local time offset greater than or equal to 24 hours\n");
127 }
129 return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
130 qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
131 $localtm[3],
132 qw(Jan Feb Mar Apr May Jun
133 Jul Aug Sep Oct Nov Dec)[$localtm[4]],
134 $localtm[5]+1900,
135 $localtm[2],
136 $localtm[1],
137 $localtm[0],
138 ($offset >= 0) ? '+' : '-',
139 abs($offhour),
140 $offmin,
141 );
142 }
144 my $have_email_valid = eval { require Email::Valid; 1 };
145 my $smtp;
147 sub unique_email_list(@);
148 sub cleanup_compose_files();
150 # Constants (essentially)
151 my $compose_filename = ".msg.$$";
153 # Variables we fill in automatically, or via prompting:
154 my (@to,@cc,@initial_cc,@bcclist,@xh,
155 $initial_reply_to,$initial_subject,@files,$author,$sender,$compose,$time);
157 my $envelope_sender;
159 # Example reply to:
160 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
162 my $repo = Git->repository();
163 my $term = eval {
164 new Term::ReadLine 'git-send-email';
165 };
166 if ($@) {
167 $term = new FakeTerm "$@: going non-interactive";
168 }
170 # Behavior modification variables
171 my ($quiet, $dry_run) = (0, 0);
173 # Variables with corresponding config settings
174 my ($thread, $chain_reply_to, $suppress_from, $signed_off_cc, $cc_cmd);
175 my ($smtp_server, $smtp_authuser, $smtp_authpass, $smtp_ssl);
176 my ($identity, $aliasfiletype, @alias_files);
178 my %config_bool_settings = (
179 "thread" => [\$thread, 1],
180 "chainreplyto" => [\$chain_reply_to, 1],
181 "suppressfrom" => [\$suppress_from, 0],
182 "signedoffcc" => [\$signed_off_cc, 1],
183 "smtpssl" => [\$smtp_ssl, 0],
184 );
186 my %config_settings = (
187 "smtpserver" => \$smtp_server,
188 "smtpuser" => \$smtp_authuser,
189 "smtppass" => \$smtp_authpass,
190 "cccmd" => \$cc_cmd,
191 "aliasfiletype" => \$aliasfiletype,
192 "bcc" => \@bcclist,
193 "aliasesfile" => \@alias_files,
194 );
196 # Begin by accumulating all the variables (defined above), that we will end up
197 # needing, first, from the command line:
199 my $rc = GetOptions("sender|from=s" => \$sender,
200 "in-reply-to=s" => \$initial_reply_to,
201 "subject=s" => \$initial_subject,
202 "to=s" => \@to,
203 "cc=s" => \@initial_cc,
204 "bcc=s" => \@bcclist,
205 "chain-reply-to!" => \$chain_reply_to,
206 "smtp-server=s" => \$smtp_server,
207 "smtp-user=s" => \$smtp_authuser,
208 "smtp-pass=s" => \$smtp_authpass,
209 "smtp-ssl!" => \$smtp_ssl,
210 "identity=s" => \$identity,
211 "compose" => \$compose,
212 "quiet" => \$quiet,
213 "cc-cmd=s" => \$cc_cmd,
214 "suppress-from!" => \$suppress_from,
215 "signed-off-cc|signed-off-by-cc!" => \$signed_off_cc,
216 "dry-run" => \$dry_run,
217 "envelope-sender=s" => \$envelope_sender,
218 "thread!" => \$thread,
219 );
221 unless ($rc) {
222 usage();
223 }
225 # Now, let's fill any that aren't set in with defaults:
227 sub read_config {
228 my ($prefix) = @_;
230 foreach my $setting (keys %config_bool_settings) {
231 my $target = $config_bool_settings{$setting}->[0];
232 $$target = $repo->config_bool("$prefix.$setting") unless (defined $$target);
233 }
235 foreach my $setting (keys %config_settings) {
236 my $target = $config_settings{$setting};
237 if (ref($target) eq "ARRAY") {
238 unless (@$target) {
239 my @values = $repo->config("$prefix.$setting");
240 @$target = @values if (@values && defined $values[0]);
241 }
242 }
243 else {
244 $$target = $repo->config("$prefix.$setting") unless (defined $$target);
245 }
246 }
247 }
249 # read configuration from [sendemail "$identity"], fall back on [sendemail]
250 $identity = $repo->config("sendemail.identity") unless (defined $identity);
251 read_config("sendemail.$identity") if (defined $identity);
252 read_config("sendemail");
254 # fall back on builtin bool defaults
255 foreach my $setting (values %config_bool_settings) {
256 ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
257 }
259 my ($repoauthor) = $repo->ident_person('author');
260 my ($repocommitter) = $repo->ident_person('committer');
262 # Verify the user input
264 foreach my $entry (@to) {
265 die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
266 }
268 foreach my $entry (@initial_cc) {
269 die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
270 }
272 foreach my $entry (@bcclist) {
273 die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
274 }
276 my %aliases;
277 my %parse_alias = (
278 # multiline formats can be supported in the future
279 mutt => sub { my $fh = shift; while (<$fh>) {
280 if (/^\s*alias\s+(\S+)\s+(.*)$/) {
281 my ($alias, $addr) = ($1, $2);
282 $addr =~ s/#.*$//; # mutt allows # comments
283 # commas delimit multiple addresses
284 $aliases{$alias} = [ split(/\s*,\s*/, $addr) ];
285 }}},
286 mailrc => sub { my $fh = shift; while (<$fh>) {
287 if (/^alias\s+(\S+)\s+(.*)$/) {
288 # spaces delimit multiple addresses
289 $aliases{$1} = [ split(/\s+/, $2) ];
290 }}},
291 pine => sub { my $fh = shift; while (<$fh>) {
292 if (/^(\S+)\t.*\t(.*)$/) {
293 $aliases{$1} = [ split(/\s*,\s*/, $2) ];
294 }}},
295 gnus => sub { my $fh = shift; while (<$fh>) {
296 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
297 $aliases{$1} = [ $2 ];
298 }}}
299 );
301 if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
302 foreach my $file (@alias_files) {
303 open my $fh, '<', $file or die "opening $file: $!\n";
304 $parse_alias{$aliasfiletype}->($fh);
305 close $fh;
306 }
307 }
309 ($sender) = expand_aliases($sender) if defined $sender;
311 my $prompting = 0;
312 if (!defined $sender) {
313 $sender = $repoauthor || $repocommitter;
314 do {
315 $_ = $term->readline("Who should the emails appear to be from? [$sender] ");
316 } while (!defined $_);
318 $sender = $_ if ($_);
319 print "Emails will be sent from: ", $sender, "\n";
320 $prompting++;
321 }
323 if (!@to) {
324 do {
325 $_ = $term->readline("Who should the emails be sent to? ",
326 "");
327 } while (!defined $_);
328 my $to = $_;
329 push @to, split /,/, $to;
330 $prompting++;
331 }
333 sub expand_aliases {
334 my @cur = @_;
335 my @last;
336 do {
337 @last = @cur;
338 @cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
339 } while (join(',',@cur) ne join(',',@last));
340 return @cur;
341 }
343 @to = expand_aliases(@to);
344 @to = (map { sanitize_address($_) } @to);
345 @initial_cc = expand_aliases(@initial_cc);
346 @bcclist = expand_aliases(@bcclist);
348 if (!defined $initial_subject && $compose) {
349 do {
350 $_ = $term->readline("What subject should the emails start with? ",
351 $initial_subject);
352 } while (!defined $_);
353 $initial_subject = $_;
354 $prompting++;
355 }
357 if ($thread && !defined $initial_reply_to && $prompting) {
358 do {
359 $_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ",
360 $initial_reply_to);
361 } while (!defined $_);
363 $initial_reply_to = $_;
364 $initial_reply_to =~ s/^\s+<?/</;
365 $initial_reply_to =~ s/>?\s+$/>/;
366 }
368 if (!defined $smtp_server) {
369 foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
370 if (-x $_) {
371 $smtp_server = $_;
372 last;
373 }
374 }
375 $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
376 }
378 if ($compose) {
379 # Note that this does not need to be secure, but we will make a small
380 # effort to have it be unique
381 open(C,">",$compose_filename)
382 or die "Failed to open for writing $compose_filename: $!";
383 print C "From $sender # This line is ignored.\n";
384 printf C "Subject: %s\n\n", $initial_subject;
385 printf C <<EOT;
386 GIT: Please enter your email below.
387 GIT: Lines beginning in "GIT: " will be removed.
388 GIT: Consider including an overall diffstat or table of contents
389 GIT: for the patch you are writing.
391 EOT
392 close(C);
394 my $editor = $ENV{GIT_EDITOR} || $repo->config("core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
395 system($editor, $compose_filename);
397 open(C2,">",$compose_filename . ".final")
398 or die "Failed to open $compose_filename.final : " . $!;
400 open(C,"<",$compose_filename)
401 or die "Failed to open $compose_filename : " . $!;
403 while(<C>) {
404 next if m/^GIT: /;
405 print C2 $_;
406 }
407 close(C);
408 close(C2);
410 do {
411 $_ = $term->readline("Send this email? (y|n) ");
412 } while (!defined $_);
414 if (uc substr($_,0,1) ne 'Y') {
415 cleanup_compose_files();
416 exit(0);
417 }
419 @files = ($compose_filename . ".final");
420 }
423 # Now that all the defaults are set, process the rest of the command line
424 # arguments and collect up the files that need to be processed.
425 for my $f (@ARGV) {
426 if (-d $f) {
427 opendir(DH,$f)
428 or die "Failed to opendir $f: $!";
430 push @files, grep { -f $_ } map { +$f . "/" . $_ }
431 sort readdir(DH);
433 } elsif (-f $f) {
434 push @files, $f;
436 } else {
437 print STDERR "Skipping $f - not found.\n";
438 }
439 }
441 if (@files) {
442 unless ($quiet) {
443 print $_,"\n" for (@files);
444 }
445 } else {
446 print STDERR "\nNo patch files specified!\n\n";
447 usage();
448 }
450 # Variables we set as part of the loop over files
451 our ($message_id, %mail, $subject, $reply_to, $references, $message);
453 sub extract_valid_address {
454 my $address = shift;
455 my $local_part_regexp = '[^<>"\s@]+';
456 my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
458 # check for a local address:
459 return $address if ($address =~ /^($local_part_regexp)$/);
461 $address =~ s/^\s*<(.*)>\s*$/$1/;
462 if ($have_email_valid) {
463 return scalar Email::Valid->address($address);
464 } else {
465 # less robust/correct than the monster regexp in Email::Valid,
466 # but still does a 99% job, and one less dependency
467 $address =~ /($local_part_regexp\@$domain_regexp)/;
468 return $1;
469 }
470 }
472 # Usually don't need to change anything below here.
474 # we make a "fake" message id by taking the current number
475 # of seconds since the beginning of Unix time and tacking on
476 # a random number to the end, in case we are called quicker than
477 # 1 second since the last time we were called.
479 # We'll setup a template for the message id, using the "from" address:
481 sub make_message_id
482 {
483 my $date = time;
484 my $pseudo_rand = int (rand(4200));
485 my $du_part;
486 for ($sender, $repocommitter, $repoauthor) {
487 $du_part = extract_valid_address(sanitize_address($_));
488 last if (defined $du_part and $du_part ne '');
489 }
490 if (not defined $du_part or $du_part eq '') {
491 use Sys::Hostname qw();
492 $du_part = 'user@' . Sys::Hostname::hostname();
493 }
494 my $message_id_template = "<%s-git-send-email-$du_part>";
495 $message_id = sprintf $message_id_template, "$date$pseudo_rand";
496 #print "new message id = $message_id\n"; # Was useful for debugging
497 }
501 $time = time - scalar $#files;
503 sub unquote_rfc2047 {
504 local ($_) = @_;
505 if (s/=\?utf-8\?q\?(.*)\?=/$1/g) {
506 s/_/ /g;
507 s/=([0-9A-F]{2})/chr(hex($1))/eg;
508 }
509 return "$_";
510 }
512 # use the simplest quoting being able to handle the recipient
513 sub sanitize_address
514 {
515 my ($recipient) = @_;
516 my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
518 if (not $recipient_name) {
519 return "$recipient";
520 }
522 # if recipient_name is already quoted, do nothing
523 if ($recipient_name =~ /^(".*"|=\?utf-8\?q\?.*\?=)$/) {
524 return $recipient;
525 }
527 # rfc2047 is needed if a non-ascii char is included
528 if ($recipient_name =~ /[^[:ascii:]]/) {
529 $recipient_name =~ s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
530 $recipient_name =~ s/(.*)/=\?utf-8\?q\?$1\?=/;
531 }
533 # double quotes are needed if specials or CTLs are included
534 elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
535 $recipient_name =~ s/(["\\\r])/\\$1/;
536 $recipient_name = "\"$recipient_name\"";
537 }
539 return "$recipient_name $recipient_addr";
541 }
543 sub send_message
544 {
545 my @recipients = unique_email_list(@to);
546 @cc = (map { sanitize_address($_) } @cc);
547 my $to = join (",\n\t", @recipients);
548 @recipients = unique_email_list(@recipients,@cc,@bcclist);
549 @recipients = (map { extract_valid_address($_) } @recipients);
550 my $date = format_2822_time($time++);
551 my $gitversion = '@@GIT_VERSION@@';
552 if ($gitversion =~ m/..GIT_VERSION../) {
553 $gitversion = Git::version();
554 }
556 my $cc = join(", ", unique_email_list(@cc));
557 my $ccline = "";
558 if ($cc ne '') {
559 $ccline = "\nCc: $cc";
560 }
561 my $sanitized_sender = sanitize_address($sender);
562 make_message_id();
564 my $header = "From: $sanitized_sender
565 To: $to${ccline}
566 Subject: $subject
567 Date: $date
568 Message-Id: $message_id
569 X-Mailer: git-send-email $gitversion
570 ";
571 if ($thread && $reply_to) {
573 $header .= "In-Reply-To: $reply_to\n";
574 $header .= "References: $references\n";
575 }
576 if (@xh) {
577 $header .= join("\n", @xh) . "\n";
578 }
580 my @sendmail_parameters = ('-i', @recipients);
581 my $raw_from = $sanitized_sender;
582 $raw_from = $envelope_sender if (defined $envelope_sender);
583 $raw_from = extract_valid_address($raw_from);
584 unshift (@sendmail_parameters,
585 '-f', $raw_from) if(defined $envelope_sender);
587 if ($dry_run) {
588 # We don't want to send the email.
589 } elsif ($smtp_server =~ m#^/#) {
590 my $pid = open my $sm, '|-';
591 defined $pid or die $!;
592 if (!$pid) {
593 exec($smtp_server, @sendmail_parameters) or die $!;
594 }
595 print $sm "$header\n$message";
596 close $sm or die $?;
597 } else {
598 if ($smtp_ssl) {
599 require Net::SMTP::SSL;
600 $smtp ||= Net::SMTP::SSL->new( $smtp_server, Port => 465 );
601 }
602 else {
603 require Net::SMTP;
604 $smtp ||= Net::SMTP->new( $smtp_server );
605 }
606 $smtp->auth( $smtp_authuser, $smtp_authpass )
607 or die $smtp->message if (defined $smtp_authuser);
608 $smtp->mail( $raw_from ) or die $smtp->message;
609 $smtp->to( @recipients ) or die $smtp->message;
610 $smtp->data or die $smtp->message;
611 $smtp->datasend("$header\n$message") or die $smtp->message;
612 $smtp->dataend() or die $smtp->message;
613 $smtp->ok or die "Failed to send $subject\n".$smtp->message;
614 }
615 if ($quiet) {
616 printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
617 } else {
618 print (($dry_run ? "Dry-" : "")."OK. Log says:\nDate: $date\n");
619 if ($smtp_server !~ m#^/#) {
620 print "Server: $smtp_server\n";
621 print "MAIL FROM:<$raw_from>\n";
622 print "RCPT TO:".join(',',(map { "<$_>" } @recipients))."\n";
623 } else {
624 print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
625 }
626 print "From: $sanitized_sender\nSubject: $subject\nCc: $cc\nTo: $to\n\n";
627 if ($smtp) {
628 print "Result: ", $smtp->code, ' ',
629 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
630 } else {
631 print "Result: OK\n";
632 }
633 }
634 }
636 $reply_to = $initial_reply_to;
637 $references = $initial_reply_to || '';
638 $subject = $initial_subject;
640 foreach my $t (@files) {
641 open(F,"<",$t) or die "can't open file $t";
643 my $author = undef;
644 @cc = @initial_cc;
645 @xh = ();
646 my $input_format = undef;
647 my $header_done = 0;
648 $message = "";
649 while(<F>) {
650 if (!$header_done) {
651 if (/^From /) {
652 $input_format = 'mbox';
653 next;
654 }
655 chomp;
656 if (!defined $input_format && /^[-A-Za-z]+:\s/) {
657 $input_format = 'mbox';
658 }
660 if (defined $input_format && $input_format eq 'mbox') {
661 if (/^Subject:\s+(.*)$/) {
662 $subject = $1;
664 } elsif (/^(Cc|From):\s+(.*)$/) {
665 if (unquote_rfc2047($2) eq $sender) {
666 next if ($suppress_from);
667 }
668 elsif ($1 eq 'From') {
669 $author = unquote_rfc2047($2);
670 }
671 printf("(mbox) Adding cc: %s from line '%s'\n",
672 $2, $_) unless $quiet;
673 push @cc, $2;
674 }
675 elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
676 push @xh, $_;
677 }
679 } else {
680 # In the traditional
681 # "send lots of email" format,
682 # line 1 = cc
683 # line 2 = subject
684 # So let's support that, too.
685 $input_format = 'lots';
686 if (@cc == 0) {
687 printf("(non-mbox) Adding cc: %s from line '%s'\n",
688 $_, $_) unless $quiet;
690 push @cc, $_;
692 } elsif (!defined $subject) {
693 $subject = $_;
694 }
695 }
697 # A whitespace line will terminate the headers
698 if (m/^\s*$/) {
699 $header_done = 1;
700 }
701 } else {
702 $message .= $_;
703 if (/^(Signed-off-by|Cc): (.*)$/i && $signed_off_cc) {
704 my $c = $2;
705 chomp $c;
706 push @cc, $c;
707 printf("(sob) Adding cc: %s from line '%s'\n",
708 $c, $_) unless $quiet;
709 }
710 }
711 }
712 close F;
714 if (defined $cc_cmd) {
715 open(F, "$cc_cmd $t |")
716 or die "(cc-cmd) Could not execute '$cc_cmd'";
717 while(<F>) {
718 my $c = $_;
719 $c =~ s/^\s*//g;
720 $c =~ s/\n$//g;
721 push @cc, $c;
722 printf("(cc-cmd) Adding cc: %s from: '%s'\n",
723 $c, $cc_cmd) unless $quiet;
724 }
725 close F
726 or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
727 }
729 if (defined $author) {
730 $message = "From: $author\n\n$message";
731 }
733 send_message();
735 # set up for the next message
736 if ($chain_reply_to || !defined $reply_to || length($reply_to) == 0) {
737 $reply_to = $message_id;
738 if (length $references > 0) {
739 $references .= "\n $message_id";
740 } else {
741 $references = "$message_id";
742 }
743 }
744 }
746 if ($compose) {
747 cleanup_compose_files();
748 }
750 sub cleanup_compose_files() {
751 unlink($compose_filename, $compose_filename . ".final");
753 }
755 $smtp->quit if $smtp;
757 sub unique_email_list(@) {
758 my %seen;
759 my @emails;
761 foreach my $entry (@_) {
762 if (my $clean = extract_valid_address($entry)) {
763 $seen{$clean} ||= 0;
764 next if $seen{$clean}++;
765 push @emails, $entry;
766 } else {
767 print STDERR "W: unable to extract a valid address",
768 " from: $entry\n";
769 }
770 }
771 return @emails;
772 }