Merge branch 'bc/maint-keep-pack'
[git] / git-send-email.perl
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
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;
26
27 package FakeTerm;
28 sub new {
29         my ($class, $reason) = @_;
30         return bless \$reason, shift;
31 }
32 sub readline {
33         my $self = shift;
34         die "Cannot use readline on FakeTerm: $$self";
35 }
36 package main;
37
38
39 sub usage {
40         print <<EOT;
41 git send-email [options] <file | directory>...
42
43   Composing:
44     --from                  <str>  * Email From:
45     --to                    <str>  * Email To:
46     --cc                    <str>  * Email Cc:
47     --bcc                   <str>  * Email Bcc:
48     --subject               <str>  * Email "Subject:"
49     --in-reply-to           <str>  * Email "In-Reply-To:"
50     --compose                      * Open an editor for introduction.
51
52   Sending:
53     --envelope-sender       <str>  * Email envelope sender.
54     --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
55                                      is optional. Default 'localhost'.
56     --smtp-server-port      <int>  * Outgoing SMTP server port.
57     --smtp-user             <str>  * Username for SMTP-AUTH.
58     --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
59     --smtp-encryption       <str>  * tls or ssl; anything else disables.
60     --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
61
62   Automating:
63     --identity              <str>  * Use the sendemail.<id> options.
64     --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
65     --suppress-cc           <str>  * author, self, sob, cccmd, all.
66     --[no-]signed-off-by-cc        * Send to Cc: and Signed-off-by:
67                                      addresses. Default on.
68     --[no-]suppress-from           * Send to self. Default off.
69     --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default on.
70     --[no-]thread                  * Use In-Reply-To: field. Default on.
71
72   Administering:
73     --quiet                        * Output one line of info per email.
74     --dry-run                      * Don't actually send the emails.
75     --[no-]validate                * Perform patch sanity checks. Default on.
76
77 EOT
78         exit(1);
79 }
80
81 # most mail servers generate the Date: header, but not all...
82 sub format_2822_time {
83         my ($time) = @_;
84         my @localtm = localtime($time);
85         my @gmttm = gmtime($time);
86         my $localmin = $localtm[1] + $localtm[2] * 60;
87         my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
88         if ($localtm[0] != $gmttm[0]) {
89                 die "local zone differs from GMT by a non-minute interval\n";
90         }
91         if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
92                 $localmin += 1440;
93         } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
94                 $localmin -= 1440;
95         } elsif ($gmttm[6] != $localtm[6]) {
96                 die "local time offset greater than or equal to 24 hours\n";
97         }
98         my $offset = $localmin - $gmtmin;
99         my $offhour = $offset / 60;
100         my $offmin = abs($offset % 60);
101         if (abs($offhour) >= 24) {
102                 die ("local time offset greater than or equal to 24 hours\n");
103         }
104
105         return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
106                        qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
107                        $localtm[3],
108                        qw(Jan Feb Mar Apr May Jun
109                           Jul Aug Sep Oct Nov Dec)[$localtm[4]],
110                        $localtm[5]+1900,
111                        $localtm[2],
112                        $localtm[1],
113                        $localtm[0],
114                        ($offset >= 0) ? '+' : '-',
115                        abs($offhour),
116                        $offmin,
117                        );
118 }
119
120 my $have_email_valid = eval { require Email::Valid; 1 };
121 my $smtp;
122 my $auth;
123
124 sub unique_email_list(@);
125 sub cleanup_compose_files();
126
127 # Constants (essentially)
128 my $compose_filename = ".msg.$$";
129
130 # Variables we fill in automatically, or via prompting:
131 my (@to,@cc,@initial_cc,@bcclist,@xh,
132         $initial_reply_to,$initial_subject,@files,$author,$sender,$smtp_authpass,$compose,$time);
133
134 my $envelope_sender;
135
136 # Example reply to:
137 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
138
139 my $repo = eval { Git->repository() };
140 my @repo = $repo ? ($repo) : ();
141 my $term = eval {
142         $ENV{"GIT_SEND_EMAIL_NOTTY"}
143                 ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
144                 : new Term::ReadLine 'git-send-email';
145 };
146 if ($@) {
147         $term = new FakeTerm "$@: going non-interactive";
148 }
149
150 # Behavior modification variables
151 my ($quiet, $dry_run) = (0, 0);
152
153 # Variables with corresponding config settings
154 my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
155 my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
156 my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
157 my ($validate);
158 my (@suppress_cc);
159
160 my %config_bool_settings = (
161     "thread" => [\$thread, 1],
162     "chainreplyto" => [\$chain_reply_to, 1],
163     "suppressfrom" => [\$suppress_from, undef],
164     "signedoffbycc" => [\$signed_off_by_cc, undef],
165     "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
166     "validate" => [\$validate, 1],
167 );
168
169 my %config_settings = (
170     "smtpserver" => \$smtp_server,
171     "smtpserverport" => \$smtp_server_port,
172     "smtpuser" => \$smtp_authuser,
173     "smtppass" => \$smtp_authpass,
174     "to" => \@to,
175     "cc" => \@initial_cc,
176     "cccmd" => \$cc_cmd,
177     "aliasfiletype" => \$aliasfiletype,
178     "bcc" => \@bcclist,
179     "aliasesfile" => \@alias_files,
180     "suppresscc" => \@suppress_cc,
181     "envelopesender" => \$envelope_sender,
182 );
183
184 # Handle Uncouth Termination
185 sub signal_handler {
186
187         # Make text normal
188         print color("reset"), "\n";
189
190         # SMTP password masked
191         system "stty echo";
192
193         # tmp files from --compose
194         if (-e $compose_filename) {
195                 print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
196         }
197         if (-e ($compose_filename . ".final")) {
198                 print "'$compose_filename.final' contains the composed email.\n"
199         }
200
201         exit;
202 };
203
204 $SIG{TERM} = \&signal_handler;
205 $SIG{INT}  = \&signal_handler;
206
207 # Begin by accumulating all the variables (defined above), that we will end up
208 # needing, first, from the command line:
209
210 my $rc = GetOptions("sender|from=s" => \$sender,
211                     "in-reply-to=s" => \$initial_reply_to,
212                     "subject=s" => \$initial_subject,
213                     "to=s" => \@to,
214                     "cc=s" => \@initial_cc,
215                     "bcc=s" => \@bcclist,
216                     "chain-reply-to!" => \$chain_reply_to,
217                     "smtp-server=s" => \$smtp_server,
218                     "smtp-server-port=s" => \$smtp_server_port,
219                     "smtp-user=s" => \$smtp_authuser,
220                     "smtp-pass:s" => \$smtp_authpass,
221                     "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
222                     "smtp-encryption=s" => \$smtp_encryption,
223                     "identity=s" => \$identity,
224                     "compose" => \$compose,
225                     "quiet" => \$quiet,
226                     "cc-cmd=s" => \$cc_cmd,
227                     "suppress-from!" => \$suppress_from,
228                     "suppress-cc=s" => \@suppress_cc,
229                     "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
230                     "dry-run" => \$dry_run,
231                     "envelope-sender=s" => \$envelope_sender,
232                     "thread!" => \$thread,
233                     "validate!" => \$validate,
234          );
235
236 unless ($rc) {
237     usage();
238 }
239
240 # Now, let's fill any that aren't set in with defaults:
241
242 sub read_config {
243         my ($prefix) = @_;
244
245         foreach my $setting (keys %config_bool_settings) {
246                 my $target = $config_bool_settings{$setting}->[0];
247                 $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
248         }
249
250         foreach my $setting (keys %config_settings) {
251                 my $target = $config_settings{$setting};
252                 if (ref($target) eq "ARRAY") {
253                         unless (@$target) {
254                                 my @values = Git::config(@repo, "$prefix.$setting");
255                                 @$target = @values if (@values && defined $values[0]);
256                         }
257                 }
258                 else {
259                         $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
260                 }
261         }
262
263         if (!defined $smtp_encryption) {
264                 my $enc = Git::config(@repo, "$prefix.smtpencryption");
265                 if (defined $enc) {
266                         $smtp_encryption = $enc;
267                 } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
268                         $smtp_encryption = 'ssl';
269                 }
270         }
271 }
272
273 # read configuration from [sendemail "$identity"], fall back on [sendemail]
274 $identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
275 read_config("sendemail.$identity") if (defined $identity);
276 read_config("sendemail");
277
278 # fall back on builtin bool defaults
279 foreach my $setting (values %config_bool_settings) {
280         ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
281 }
282
283 # 'default' encryption is none -- this only prevents a warning
284 $smtp_encryption = '' unless (defined $smtp_encryption);
285
286 # Set CC suppressions
287 my(%suppress_cc);
288 if (@suppress_cc) {
289         foreach my $entry (@suppress_cc) {
290                 die "Unknown --suppress-cc field: '$entry'\n"
291                         unless $entry =~ /^(all|cccmd|cc|author|self|sob)$/;
292                 $suppress_cc{$entry} = 1;
293         }
294 }
295
296 if ($suppress_cc{'all'}) {
297         foreach my $entry (qw (ccmd cc author self sob)) {
298                 $suppress_cc{$entry} = 1;
299         }
300         delete $suppress_cc{'all'};
301 }
302
303 # If explicit old-style ones are specified, they trump --suppress-cc.
304 $suppress_cc{'self'} = $suppress_from if defined $suppress_from;
305 $suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
306
307 # Debugging, print out the suppressions.
308 if (0) {
309         print "suppressions:\n";
310         foreach my $entry (keys %suppress_cc) {
311                 printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
312         }
313 }
314
315 my ($repoauthor, $repocommitter);
316 ($repoauthor) = Git::ident_person(@repo, 'author');
317 ($repocommitter) = Git::ident_person(@repo, 'committer');
318
319 # Verify the user input
320
321 foreach my $entry (@to) {
322         die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
323 }
324
325 foreach my $entry (@initial_cc) {
326         die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
327 }
328
329 foreach my $entry (@bcclist) {
330         die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
331 }
332
333 my %aliases;
334 my %parse_alias = (
335         # multiline formats can be supported in the future
336         mutt => sub { my $fh = shift; while (<$fh>) {
337                 if (/^\s*alias\s+(\S+)\s+(.*)$/) {
338                         my ($alias, $addr) = ($1, $2);
339                         $addr =~ s/#.*$//; # mutt allows # comments
340                          # commas delimit multiple addresses
341                         $aliases{$alias} = [ split(/\s*,\s*/, $addr) ];
342                 }}},
343         mailrc => sub { my $fh = shift; while (<$fh>) {
344                 if (/^alias\s+(\S+)\s+(.*)$/) {
345                         # spaces delimit multiple addresses
346                         $aliases{$1} = [ split(/\s+/, $2) ];
347                 }}},
348         pine => sub { my $fh = shift; while (<$fh>) {
349                 if (/^(\S+)\t.*\t(.*)$/) {
350                         $aliases{$1} = [ split(/\s*,\s*/, $2) ];
351                 }}},
352         gnus => sub { my $fh = shift; while (<$fh>) {
353                 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
354                         $aliases{$1} = [ $2 ];
355                 }}}
356 );
357
358 if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
359         foreach my $file (@alias_files) {
360                 open my $fh, '<', $file or die "opening $file: $!\n";
361                 $parse_alias{$aliasfiletype}->($fh);
362                 close $fh;
363         }
364 }
365
366 ($sender) = expand_aliases($sender) if defined $sender;
367
368 # Now that all the defaults are set, process the rest of the command line
369 # arguments and collect up the files that need to be processed.
370 for my $f (@ARGV) {
371         if (-d $f) {
372                 opendir(DH,$f)
373                         or die "Failed to opendir $f: $!";
374
375                 push @files, grep { -f $_ } map { +$f . "/" . $_ }
376                                 sort readdir(DH);
377                 closedir(DH);
378         } elsif (-f $f or -p $f) {
379                 push @files, $f;
380         } else {
381                 print STDERR "Skipping $f - not found.\n";
382         }
383 }
384
385 if ($validate) {
386         foreach my $f (@files) {
387                 unless (-p $f) {
388                         my $error = validate_patch($f);
389                         $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
390                 }
391         }
392 }
393
394 if (@files) {
395         unless ($quiet) {
396                 print $_,"\n" for (@files);
397         }
398 } else {
399         print STDERR "\nNo patch files specified!\n\n";
400         usage();
401 }
402
403 my $prompting = 0;
404 if (!defined $sender) {
405         $sender = $repoauthor || $repocommitter || '';
406
407         while (1) {
408                 $_ = $term->readline("Who should the emails appear to be from? [$sender] ");
409                 last if defined $_;
410                 print "\n";
411         }
412
413         $sender = $_ if ($_);
414         print "Emails will be sent from: ", $sender, "\n";
415         $prompting++;
416 }
417
418 if (!@to) {
419
420
421         while (1) {
422                 $_ = $term->readline("Who should the emails be sent to? ", "");
423                 last if defined $_;
424                 print "\n";
425         }
426
427         my $to = $_;
428         push @to, split /,\s*/, $to;
429         $prompting++;
430 }
431
432 sub expand_aliases {
433         my @cur = @_;
434         my @last;
435         do {
436                 @last = @cur;
437                 @cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
438         } while (join(',',@cur) ne join(',',@last));
439         return @cur;
440 }
441
442 @to = expand_aliases(@to);
443 @to = (map { sanitize_address($_) } @to);
444 @initial_cc = expand_aliases(@initial_cc);
445 @bcclist = expand_aliases(@bcclist);
446
447 if (!defined $initial_subject && $compose) {
448         while (1) {
449                 $_ = $term->readline("What subject should the initial email start with? ", $initial_subject);
450                 last if defined $_;
451                 print "\n";
452         }
453
454         $initial_subject = $_;
455         $prompting++;
456 }
457
458 if ($thread && !defined $initial_reply_to && $prompting) {
459         while (1) {
460                 $_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ", $initial_reply_to);
461                 last if defined $_;
462                 print "\n";
463         }
464
465         $initial_reply_to = $_;
466 }
467 if (defined $initial_reply_to) {
468         $initial_reply_to =~ s/^\s*<?//;
469         $initial_reply_to =~ s/>?\s*$//;
470         $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
471 }
472
473 if (!defined $smtp_server) {
474         foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
475                 if (-x $_) {
476                         $smtp_server = $_;
477                         last;
478                 }
479         }
480         $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
481 }
482
483 if ($compose) {
484         # Note that this does not need to be secure, but we will make a small
485         # effort to have it be unique
486         open(C,">",$compose_filename)
487                 or die "Failed to open for writing $compose_filename: $!";
488         print C "From $sender # This line is ignored.\n";
489         printf C "Subject: %s\n\n", $initial_subject;
490         printf C <<EOT;
491 GIT: Please enter your email below.
492 GIT: Lines beginning in "GIT: " will be removed.
493 GIT: Consider including an overall diffstat or table of contents
494 GIT: for the patch you are writing.
495
496 EOT
497         close(C);
498
499         my $editor = $ENV{GIT_EDITOR} || Git::config(@repo, "core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
500         system('sh', '-c', $editor.' "$@"', $editor, $compose_filename);
501
502         open(C2,">",$compose_filename . ".final")
503                 or die "Failed to open $compose_filename.final : " . $!;
504
505         open(C,"<",$compose_filename)
506                 or die "Failed to open $compose_filename : " . $!;
507
508         my $need_8bit_cte = file_has_nonascii($compose_filename);
509         my $in_body = 0;
510         while(<C>) {
511                 next if m/^GIT: /;
512                 if (!$in_body && /^\n$/) {
513                         $in_body = 1;
514                         if ($need_8bit_cte) {
515                                 print C2 "MIME-Version: 1.0\n",
516                                          "Content-Type: text/plain; ",
517                                            "charset=utf-8\n",
518                                          "Content-Transfer-Encoding: 8bit\n";
519                         }
520                 }
521                 if (!$in_body && /^MIME-Version:/i) {
522                         $need_8bit_cte = 0;
523                 }
524                 if (!$in_body && /^Subject: ?(.*)/i) {
525                         my $subject = $1;
526                         $_ = "Subject: " .
527                                 ($subject =~ /[^[:ascii:]]/ ?
528                                  quote_rfc2047($subject) :
529                                  $subject) .
530                                 "\n";
531                 }
532                 print C2 $_;
533         }
534         close(C);
535         close(C2);
536
537         while (1) {
538                 $_ = $term->readline("Send this email? (y|n) ");
539                 last if defined $_;
540                 print "\n";
541         }
542
543         if (uc substr($_,0,1) ne 'Y') {
544                 cleanup_compose_files();
545                 exit(0);
546         }
547
548         @files = ($compose_filename . ".final", @files);
549 }
550
551 # Variables we set as part of the loop over files
552 our ($message_id, %mail, $subject, $reply_to, $references, $message);
553
554 sub extract_valid_address {
555         my $address = shift;
556         my $local_part_regexp = '[^<>"\s@]+';
557         my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
558
559         # check for a local address:
560         return $address if ($address =~ /^($local_part_regexp)$/);
561
562         $address =~ s/^\s*<(.*)>\s*$/$1/;
563         if ($have_email_valid) {
564                 return scalar Email::Valid->address($address);
565         } else {
566                 # less robust/correct than the monster regexp in Email::Valid,
567                 # but still does a 99% job, and one less dependency
568                 $address =~ /($local_part_regexp\@$domain_regexp)/;
569                 return $1;
570         }
571 }
572
573 # Usually don't need to change anything below here.
574
575 # we make a "fake" message id by taking the current number
576 # of seconds since the beginning of Unix time and tacking on
577 # a random number to the end, in case we are called quicker than
578 # 1 second since the last time we were called.
579
580 # We'll setup a template for the message id, using the "from" address:
581
582 my ($message_id_stamp, $message_id_serial);
583 sub make_message_id
584 {
585         my $uniq;
586         if (!defined $message_id_stamp) {
587                 $message_id_stamp = sprintf("%s-%s", time, $$);
588                 $message_id_serial = 0;
589         }
590         $message_id_serial++;
591         $uniq = "$message_id_stamp-$message_id_serial";
592
593         my $du_part;
594         for ($sender, $repocommitter, $repoauthor) {
595                 $du_part = extract_valid_address(sanitize_address($_));
596                 last if (defined $du_part and $du_part ne '');
597         }
598         if (not defined $du_part or $du_part eq '') {
599                 use Sys::Hostname qw();
600                 $du_part = 'user@' . Sys::Hostname::hostname();
601         }
602         my $message_id_template = "<%s-git-send-email-%s>";
603         $message_id = sprintf($message_id_template, $uniq, $du_part);
604         #print "new message id = $message_id\n"; # Was useful for debugging
605 }
606
607
608
609 $time = time - scalar $#files;
610
611 sub unquote_rfc2047 {
612         local ($_) = @_;
613         my $encoding;
614         if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
615                 $encoding = $1;
616                 s/_/ /g;
617                 s/=([0-9A-F]{2})/chr(hex($1))/eg;
618         }
619         return wantarray ? ($_, $encoding) : $_;
620 }
621
622 sub quote_rfc2047 {
623         local $_ = shift;
624         my $encoding = shift || 'utf-8';
625         s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
626         s/(.*)/=\?$encoding\?q\?$1\?=/;
627         return $_;
628 }
629
630 # use the simplest quoting being able to handle the recipient
631 sub sanitize_address
632 {
633         my ($recipient) = @_;
634         my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
635
636         if (not $recipient_name) {
637                 return "$recipient";
638         }
639
640         # if recipient_name is already quoted, do nothing
641         if ($recipient_name =~ /^(".*"|=\?utf-8\?q\?.*\?=)$/) {
642                 return $recipient;
643         }
644
645         # rfc2047 is needed if a non-ascii char is included
646         if ($recipient_name =~ /[^[:ascii:]]/) {
647                 $recipient_name = quote_rfc2047($recipient_name);
648         }
649
650         # double quotes are needed if specials or CTLs are included
651         elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
652                 $recipient_name =~ s/(["\\\r])/\\$1/g;
653                 $recipient_name = "\"$recipient_name\"";
654         }
655
656         return "$recipient_name $recipient_addr";
657
658 }
659
660 sub send_message
661 {
662         my @recipients = unique_email_list(@to);
663         @cc = (grep { my $cc = extract_valid_address($_);
664                       not grep { $cc eq $_ } @recipients
665                     }
666                map { sanitize_address($_) }
667                @cc);
668         my $to = join (",\n\t", @recipients);
669         @recipients = unique_email_list(@recipients,@cc,@bcclist);
670         @recipients = (map { extract_valid_address($_) } @recipients);
671         my $date = format_2822_time($time++);
672         my $gitversion = '@@GIT_VERSION@@';
673         if ($gitversion =~ m/..GIT_VERSION../) {
674             $gitversion = Git::version();
675         }
676
677         my $cc = join(", ", unique_email_list(@cc));
678         my $ccline = "";
679         if ($cc ne '') {
680                 $ccline = "\nCc: $cc";
681         }
682         my $sanitized_sender = sanitize_address($sender);
683         make_message_id() unless defined($message_id);
684
685         my $header = "From: $sanitized_sender
686 To: $to${ccline}
687 Subject: $subject
688 Date: $date
689 Message-Id: $message_id
690 X-Mailer: git-send-email $gitversion
691 ";
692         if ($thread && $reply_to) {
693
694                 $header .= "In-Reply-To: $reply_to\n";
695                 $header .= "References: $references\n";
696         }
697         if (@xh) {
698                 $header .= join("\n", @xh) . "\n";
699         }
700
701         my @sendmail_parameters = ('-i', @recipients);
702         my $raw_from = $sanitized_sender;
703         $raw_from = $envelope_sender if (defined $envelope_sender);
704         $raw_from = extract_valid_address($raw_from);
705         unshift (@sendmail_parameters,
706                         '-f', $raw_from) if(defined $envelope_sender);
707
708         if ($dry_run) {
709                 # We don't want to send the email.
710         } elsif ($smtp_server =~ m#^/#) {
711                 my $pid = open my $sm, '|-';
712                 defined $pid or die $!;
713                 if (!$pid) {
714                         exec($smtp_server, @sendmail_parameters) or die $!;
715                 }
716                 print $sm "$header\n$message";
717                 close $sm or die $?;
718         } else {
719
720                 if (!defined $smtp_server) {
721                         die "The required SMTP server is not properly defined."
722                 }
723
724                 if ($smtp_encryption eq 'ssl') {
725                         $smtp_server_port ||= 465; # ssmtp
726                         require Net::SMTP::SSL;
727                         $smtp ||= Net::SMTP::SSL->new($smtp_server, Port => $smtp_server_port);
728                 }
729                 else {
730                         require Net::SMTP;
731                         $smtp ||= Net::SMTP->new((defined $smtp_server_port)
732                                                  ? "$smtp_server:$smtp_server_port"
733                                                  : $smtp_server);
734                         if ($smtp_encryption eq 'tls') {
735                                 require Net::SMTP::SSL;
736                                 $smtp->command('STARTTLS');
737                                 $smtp->response();
738                                 if ($smtp->code == 220) {
739                                         $smtp = Net::SMTP::SSL->start_SSL($smtp)
740                                                 or die "STARTTLS failed! ".$smtp->message;
741                                         $smtp_encryption = '';
742                                         # Send EHLO again to receive fresh
743                                         # supported commands
744                                         $smtp->hello();
745                                 } else {
746                                         die "Server does not support STARTTLS! ".$smtp->message;
747                                 }
748                         }
749                 }
750
751                 if (!$smtp) {
752                         die "Unable to initialize SMTP properly.  Is there something wrong with your config?";
753                 }
754
755                 if (defined $smtp_authuser) {
756
757                         if (!defined $smtp_authpass) {
758
759                                 system "stty -echo";
760
761                                 do {
762                                         print "Password: ";
763                                         $_ = <STDIN>;
764                                         print "\n";
765                                 } while (!defined $_);
766
767                                 chomp($smtp_authpass = $_);
768
769                                 system "stty echo";
770                         }
771
772                         $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
773                 }
774
775                 $smtp->mail( $raw_from ) or die $smtp->message;
776                 $smtp->to( @recipients ) or die $smtp->message;
777                 $smtp->data or die $smtp->message;
778                 $smtp->datasend("$header\n$message") or die $smtp->message;
779                 $smtp->dataend() or die $smtp->message;
780                 $smtp->ok or die "Failed to send $subject\n".$smtp->message;
781         }
782         if ($quiet) {
783                 printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
784         } else {
785                 print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
786                 if ($smtp_server !~ m#^/#) {
787                         print "Server: $smtp_server\n";
788                         print "MAIL FROM:<$raw_from>\n";
789                         print "RCPT TO:".join(',',(map { "<$_>" } @recipients))."\n";
790                 } else {
791                         print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
792                 }
793                 print $header, "\n";
794                 if ($smtp) {
795                         print "Result: ", $smtp->code, ' ',
796                                 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
797                 } else {
798                         print "Result: OK\n";
799                 }
800         }
801 }
802
803 $reply_to = $initial_reply_to;
804 $references = $initial_reply_to || '';
805 $subject = $initial_subject;
806
807 foreach my $t (@files) {
808         open(F,"<",$t) or die "can't open file $t";
809
810         my $author = undef;
811         my $author_encoding;
812         my $has_content_type;
813         my $body_encoding;
814         @cc = @initial_cc;
815         @xh = ();
816         my $input_format = undef;
817         my $header_done = 0;
818         $message = "";
819         while(<F>) {
820                 if (!$header_done) {
821                         if (/^From /) {
822                                 $input_format = 'mbox';
823                                 next;
824                         }
825                         chomp;
826                         if (!defined $input_format && /^[-A-Za-z]+:\s/) {
827                                 $input_format = 'mbox';
828                         }
829
830                         if (defined $input_format && $input_format eq 'mbox') {
831                                 if (/^Subject:\s+(.*)$/) {
832                                         $subject = $1;
833
834                                 } elsif (/^(Cc|From):\s+(.*)$/) {
835                                         if (unquote_rfc2047($2) eq $sender) {
836                                                 next if ($suppress_cc{'self'});
837                                         }
838                                         elsif ($1 eq 'From') {
839                                                 ($author, $author_encoding)
840                                                   = unquote_rfc2047($2);
841                                                 next if ($suppress_cc{'author'});
842                                         } else {
843                                                 next if ($suppress_cc{'cc'});
844                                         }
845                                         printf("(mbox) Adding cc: %s from line '%s'\n",
846                                                 $2, $_) unless $quiet;
847                                         push @cc, $2;
848                                 }
849                                 elsif (/^Content-type:/i) {
850                                         $has_content_type = 1;
851                                         if (/charset="?([^ "]+)/) {
852                                                 $body_encoding = $1;
853                                         }
854                                         push @xh, $_;
855                                 }
856                                 elsif (/^Message-Id: (.*)/i) {
857                                         $message_id = $1;
858                                 }
859                                 elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
860                                         push @xh, $_;
861                                 }
862
863                         } else {
864                                 # In the traditional
865                                 # "send lots of email" format,
866                                 # line 1 = cc
867                                 # line 2 = subject
868                                 # So let's support that, too.
869                                 $input_format = 'lots';
870                                 if (@cc == 0 && !$suppress_cc{'cc'}) {
871                                         printf("(non-mbox) Adding cc: %s from line '%s'\n",
872                                                 $_, $_) unless $quiet;
873
874                                         push @cc, $_;
875
876                                 } elsif (!defined $subject) {
877                                         $subject = $_;
878                                 }
879                         }
880
881                         # A whitespace line will terminate the headers
882                         if (m/^\s*$/) {
883                                 $header_done = 1;
884                         }
885                 } else {
886                         $message .=  $_;
887                         if (/^(Signed-off-by|Cc): (.*)$/i) {
888                                 next if ($suppress_cc{'sob'});
889                                 chomp;
890                                 my $c = $2;
891                                 chomp $c;
892                                 next if ($c eq $sender and $suppress_cc{'self'});
893                                 push @cc, $c;
894                                 printf("(sob) Adding cc: %s from line '%s'\n",
895                                         $c, $_) unless $quiet;
896                         }
897                 }
898         }
899         close F;
900
901         if (defined $cc_cmd && !$suppress_cc{'cccmd'}) {
902                 open(F, "$cc_cmd $t |")
903                         or die "(cc-cmd) Could not execute '$cc_cmd'";
904                 while(<F>) {
905                         my $c = $_;
906                         $c =~ s/^\s*//g;
907                         $c =~ s/\n$//g;
908                         next if ($c eq $sender and $suppress_from);
909                         push @cc, $c;
910                         printf("(cc-cmd) Adding cc: %s from: '%s'\n",
911                                 $c, $cc_cmd) unless $quiet;
912                 }
913                 close F
914                         or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
915         }
916
917         if (defined $author) {
918                 $message = "From: $author\n\n$message";
919                 if (defined $author_encoding) {
920                         if ($has_content_type) {
921                                 if ($body_encoding eq $author_encoding) {
922                                         # ok, we already have the right encoding
923                                 }
924                                 else {
925                                         # uh oh, we should re-encode
926                                 }
927                         }
928                         else {
929                                 push @xh,
930                                   'MIME-Version: 1.0',
931                                   "Content-Type: text/plain; charset=$author_encoding",
932                                   'Content-Transfer-Encoding: 8bit';
933                         }
934                 }
935         }
936
937         send_message();
938
939         # set up for the next message
940         if ($chain_reply_to || !defined $reply_to || length($reply_to) == 0) {
941                 $reply_to = $message_id;
942                 if (length $references > 0) {
943                         $references .= "\n $message_id";
944                 } else {
945                         $references = "$message_id";
946                 }
947         }
948         $message_id = undef;
949 }
950
951 if ($compose) {
952         cleanup_compose_files();
953 }
954
955 sub cleanup_compose_files() {
956         unlink($compose_filename, $compose_filename . ".final");
957
958 }
959
960 $smtp->quit if $smtp;
961
962 sub unique_email_list(@) {
963         my %seen;
964         my @emails;
965
966         foreach my $entry (@_) {
967                 if (my $clean = extract_valid_address($entry)) {
968                         $seen{$clean} ||= 0;
969                         next if $seen{$clean}++;
970                         push @emails, $entry;
971                 } else {
972                         print STDERR "W: unable to extract a valid address",
973                                         " from: $entry\n";
974                 }
975         }
976         return @emails;
977 }
978
979 sub validate_patch {
980         my $fn = shift;
981         open(my $fh, '<', $fn)
982                 or die "unable to open $fn: $!\n";
983         while (my $line = <$fh>) {
984                 if (length($line) > 998) {
985                         return "$.: patch contains a line longer than 998 characters";
986                 }
987         }
988         return undef;
989 }
990
991 sub file_has_nonascii {
992         my $fn = shift;
993         open(my $fh, '<', $fn)
994                 or die "unable to open $fn: $!\n";
995         while (my $line = <$fh>) {
996                 return 1 if $line =~ /[^[:ascii:]]/;
997         }
998         return 0;
999 }