apply: fix typo in an error message
[git] / git-send-email.perl
1 #!/usr/bin/perl
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 5.008;
20 use strict;
21 use warnings;
22 use Term::ReadLine;
23 use Getopt::Long;
24 use Text::ParseWords;
25 use Data::Dumper;
26 use Term::ANSIColor;
27 use File::Temp qw/ tempdir tempfile /;
28 use File::Spec::Functions qw(catfile);
29 use Error qw(:try);
30 use Git;
31
32 Getopt::Long::Configure qw/ pass_through /;
33
34 package FakeTerm;
35 sub new {
36         my ($class, $reason) = @_;
37         return bless \$reason, shift;
38 }
39 sub readline {
40         my $self = shift;
41         die "Cannot use readline on FakeTerm: $$self";
42 }
43 package main;
44
45
46 sub usage {
47         print <<EOT;
48 git send-email [options] <file | directory | rev-list options >
49
50   Composing:
51     --from                  <str>  * Email From:
52     --[no-]to               <str>  * Email To:
53     --[no-]cc               <str>  * Email Cc:
54     --[no-]bcc              <str>  * Email Bcc:
55     --subject               <str>  * Email "Subject:"
56     --in-reply-to           <str>  * Email "In-Reply-To:"
57     --[no-]annotate                * Review each patch that will be sent in an editor.
58     --compose                      * Open an editor for introduction.
59     --compose-encoding      <str>  * Encoding to assume for introduction.
60     --8bit-encoding         <str>  * Encoding to assume 8bit mails if undeclared
61
62   Sending:
63     --envelope-sender       <str>  * Email envelope sender.
64     --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
65                                      is optional. Default 'localhost'.
66     --smtp-server-option    <str>  * Outgoing SMTP server option to use.
67     --smtp-server-port      <int>  * Outgoing SMTP server port.
68     --smtp-user             <str>  * Username for SMTP-AUTH.
69     --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
70     --smtp-encryption       <str>  * tls or ssl; anything else disables.
71     --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
72     --smtp-ssl-cert-path    <str>  * Path to ca-certificates (either directory or file).
73                                      Pass an empty string to disable certificate
74                                      verification.
75     --smtp-domain           <str>  * The domain name sent to HELO/EHLO handshake
76     --smtp-debug            <0|1>  * Disable, enable Net::SMTP debug.
77
78   Automating:
79     --identity              <str>  * Use the sendemail.<id> options.
80     --to-cmd                <str>  * Email To: via `<str> \$patch_path`
81     --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
82     --suppress-cc           <str>  * author, self, sob, cc, cccmd, body, bodycc, all.
83     --[no-]signed-off-by-cc        * Send to Signed-off-by: addresses. Default on.
84     --[no-]suppress-from           * Send to self. Default off.
85     --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default off.
86     --[no-]thread                  * Use In-Reply-To: field. Default on.
87
88   Administering:
89     --confirm               <str>  * Confirm recipients before sending;
90                                      auto, cc, compose, always, or never.
91     --quiet                        * Output one line of info per email.
92     --dry-run                      * Don't actually send the emails.
93     --[no-]validate                * Perform patch sanity checks. Default on.
94     --[no-]format-patch            * understand any non optional arguments as
95                                      `git format-patch` ones.
96     --force                        * Send even if safety checks would prevent it.
97
98 EOT
99         exit(1);
100 }
101
102 # most mail servers generate the Date: header, but not all...
103 sub format_2822_time {
104         my ($time) = @_;
105         my @localtm = localtime($time);
106         my @gmttm = gmtime($time);
107         my $localmin = $localtm[1] + $localtm[2] * 60;
108         my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
109         if ($localtm[0] != $gmttm[0]) {
110                 die "local zone differs from GMT by a non-minute interval\n";
111         }
112         if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
113                 $localmin += 1440;
114         } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
115                 $localmin -= 1440;
116         } elsif ($gmttm[6] != $localtm[6]) {
117                 die "local time offset greater than or equal to 24 hours\n";
118         }
119         my $offset = $localmin - $gmtmin;
120         my $offhour = $offset / 60;
121         my $offmin = abs($offset % 60);
122         if (abs($offhour) >= 24) {
123                 die ("local time offset greater than or equal to 24 hours\n");
124         }
125
126         return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
127                        qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
128                        $localtm[3],
129                        qw(Jan Feb Mar Apr May Jun
130                           Jul Aug Sep Oct Nov Dec)[$localtm[4]],
131                        $localtm[5]+1900,
132                        $localtm[2],
133                        $localtm[1],
134                        $localtm[0],
135                        ($offset >= 0) ? '+' : '-',
136                        abs($offhour),
137                        $offmin,
138                        );
139 }
140
141 my $have_email_valid = eval { require Email::Valid; 1 };
142 my $have_mail_address = eval { require Mail::Address; 1 };
143 my $smtp;
144 my $auth;
145
146 # Variables we fill in automatically, or via prompting:
147 my (@to,$no_to,@initial_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
148         $initial_reply_to,$initial_subject,@files,
149         $author,$sender,$smtp_authpass,$annotate,$compose,$time);
150
151 my $envelope_sender;
152
153 # Example reply to:
154 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
155
156 my $repo = eval { Git->repository() };
157 my @repo = $repo ? ($repo) : ();
158 my $term = eval {
159         $ENV{"GIT_SEND_EMAIL_NOTTY"}
160                 ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
161                 : new Term::ReadLine 'git-send-email';
162 };
163 if ($@) {
164         $term = new FakeTerm "$@: going non-interactive";
165 }
166
167 # Behavior modification variables
168 my ($quiet, $dry_run) = (0, 0);
169 my $format_patch;
170 my $compose_filename;
171 my $force = 0;
172
173 # Handle interactive edition of files.
174 my $multiedit;
175 my $editor;
176
177 sub do_edit {
178         if (!defined($editor)) {
179                 $editor = Git::command_oneline('var', 'GIT_EDITOR');
180         }
181         if (defined($multiedit) && !$multiedit) {
182                 map {
183                         system('sh', '-c', $editor.' "$@"', $editor, $_);
184                         if (($? & 127) || ($? >> 8)) {
185                                 die("the editor exited uncleanly, aborting everything");
186                         }
187                 } @_;
188         } else {
189                 system('sh', '-c', $editor.' "$@"', $editor, @_);
190                 if (($? & 127) || ($? >> 8)) {
191                         die("the editor exited uncleanly, aborting everything");
192                 }
193         }
194 }
195
196 # Variables with corresponding config settings
197 my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc);
198 my ($to_cmd, $cc_cmd);
199 my ($smtp_server, $smtp_server_port, @smtp_server_options);
200 my ($smtp_authuser, $smtp_encryption, $smtp_ssl_cert_path);
201 my ($identity, $aliasfiletype, @alias_files, $smtp_domain);
202 my ($validate, $confirm);
203 my (@suppress_cc);
204 my ($auto_8bit_encoding);
205 my ($compose_encoding);
206
207 my ($debug_net_smtp) = 0;               # Net::SMTP, see send_message()
208
209 my %config_bool_settings = (
210     "thread" => [\$thread, 1],
211     "chainreplyto" => [\$chain_reply_to, 0],
212     "suppressfrom" => [\$suppress_from, undef],
213     "signedoffbycc" => [\$signed_off_by_cc, undef],
214     "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
215     "validate" => [\$validate, 1],
216     "multiedit" => [\$multiedit, undef],
217     "annotate" => [\$annotate, undef]
218 );
219
220 my %config_settings = (
221     "smtpserver" => \$smtp_server,
222     "smtpserverport" => \$smtp_server_port,
223     "smtpserveroption" => \@smtp_server_options,
224     "smtpuser" => \$smtp_authuser,
225     "smtppass" => \$smtp_authpass,
226     "smtpsslcertpath" => \$smtp_ssl_cert_path,
227     "smtpdomain" => \$smtp_domain,
228     "to" => \@initial_to,
229     "tocmd" => \$to_cmd,
230     "cc" => \@initial_cc,
231     "cccmd" => \$cc_cmd,
232     "aliasfiletype" => \$aliasfiletype,
233     "bcc" => \@bcclist,
234     "suppresscc" => \@suppress_cc,
235     "envelopesender" => \$envelope_sender,
236     "confirm"   => \$confirm,
237     "from" => \$sender,
238     "assume8bitencoding" => \$auto_8bit_encoding,
239     "composeencoding" => \$compose_encoding,
240 );
241
242 my %config_path_settings = (
243     "aliasesfile" => \@alias_files,
244 );
245
246 # Handle Uncouth Termination
247 sub signal_handler {
248
249         # Make text normal
250         print color("reset"), "\n";
251
252         # SMTP password masked
253         system "stty echo";
254
255         # tmp files from --compose
256         if (defined $compose_filename) {
257                 if (-e $compose_filename) {
258                         print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
259                 }
260                 if (-e ($compose_filename . ".final")) {
261                         print "'$compose_filename.final' contains the composed email.\n"
262                 }
263         }
264
265         exit;
266 };
267
268 $SIG{TERM} = \&signal_handler;
269 $SIG{INT}  = \&signal_handler;
270
271 # Begin by accumulating all the variables (defined above), that we will end up
272 # needing, first, from the command line:
273
274 my $help;
275 my $rc = GetOptions("h" => \$help,
276                     "sender|from=s" => \$sender,
277                     "in-reply-to=s" => \$initial_reply_to,
278                     "subject=s" => \$initial_subject,
279                     "to=s" => \@initial_to,
280                     "to-cmd=s" => \$to_cmd,
281                     "no-to" => \$no_to,
282                     "cc=s" => \@initial_cc,
283                     "no-cc" => \$no_cc,
284                     "bcc=s" => \@bcclist,
285                     "no-bcc" => \$no_bcc,
286                     "chain-reply-to!" => \$chain_reply_to,
287                     "smtp-server=s" => \$smtp_server,
288                     "smtp-server-option=s" => \@smtp_server_options,
289                     "smtp-server-port=s" => \$smtp_server_port,
290                     "smtp-user=s" => \$smtp_authuser,
291                     "smtp-pass:s" => \$smtp_authpass,
292                     "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
293                     "smtp-encryption=s" => \$smtp_encryption,
294                     "smtp-ssl-cert-path=s" => \$smtp_ssl_cert_path,
295                     "smtp-debug:i" => \$debug_net_smtp,
296                     "smtp-domain:s" => \$smtp_domain,
297                     "identity=s" => \$identity,
298                     "annotate!" => \$annotate,
299                     "compose" => \$compose,
300                     "quiet" => \$quiet,
301                     "cc-cmd=s" => \$cc_cmd,
302                     "suppress-from!" => \$suppress_from,
303                     "suppress-cc=s" => \@suppress_cc,
304                     "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
305                     "confirm=s" => \$confirm,
306                     "dry-run" => \$dry_run,
307                     "envelope-sender=s" => \$envelope_sender,
308                     "thread!" => \$thread,
309                     "validate!" => \$validate,
310                     "format-patch!" => \$format_patch,
311                     "8bit-encoding=s" => \$auto_8bit_encoding,
312                     "compose-encoding=s" => \$compose_encoding,
313                     "force" => \$force,
314          );
315
316 usage() if $help;
317 unless ($rc) {
318     usage();
319 }
320
321 die "Cannot run git format-patch from outside a repository\n"
322         if $format_patch and not $repo;
323
324 # Now, let's fill any that aren't set in with defaults:
325
326 sub read_config {
327         my ($prefix) = @_;
328
329         foreach my $setting (keys %config_bool_settings) {
330                 my $target = $config_bool_settings{$setting}->[0];
331                 $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
332         }
333
334         foreach my $setting (keys %config_path_settings) {
335                 my $target = $config_path_settings{$setting};
336                 if (ref($target) eq "ARRAY") {
337                         unless (@$target) {
338                                 my @values = Git::config_path(@repo, "$prefix.$setting");
339                                 @$target = @values if (@values && defined $values[0]);
340                         }
341                 }
342                 else {
343                         $$target = Git::config_path(@repo, "$prefix.$setting") unless (defined $$target);
344                 }
345         }
346
347         foreach my $setting (keys %config_settings) {
348                 my $target = $config_settings{$setting};
349                 next if $setting eq "to" and defined $no_to;
350                 next if $setting eq "cc" and defined $no_cc;
351                 next if $setting eq "bcc" and defined $no_bcc;
352                 if (ref($target) eq "ARRAY") {
353                         unless (@$target) {
354                                 my @values = Git::config(@repo, "$prefix.$setting");
355                                 @$target = @values if (@values && defined $values[0]);
356                         }
357                 }
358                 else {
359                         $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
360                 }
361         }
362
363         if (!defined $smtp_encryption) {
364                 my $enc = Git::config(@repo, "$prefix.smtpencryption");
365                 if (defined $enc) {
366                         $smtp_encryption = $enc;
367                 } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
368                         $smtp_encryption = 'ssl';
369                 }
370         }
371 }
372
373 # read configuration from [sendemail "$identity"], fall back on [sendemail]
374 $identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
375 read_config("sendemail.$identity") if (defined $identity);
376 read_config("sendemail");
377
378 # fall back on builtin bool defaults
379 foreach my $setting (values %config_bool_settings) {
380         ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
381 }
382
383 # 'default' encryption is none -- this only prevents a warning
384 $smtp_encryption = '' unless (defined $smtp_encryption);
385
386 # Set CC suppressions
387 my(%suppress_cc);
388 if (@suppress_cc) {
389         foreach my $entry (@suppress_cc) {
390                 die "Unknown --suppress-cc field: '$entry'\n"
391                         unless $entry =~ /^(?:all|cccmd|cc|author|self|sob|body|bodycc)$/;
392                 $suppress_cc{$entry} = 1;
393         }
394 }
395
396 if ($suppress_cc{'all'}) {
397         foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
398                 $suppress_cc{$entry} = 1;
399         }
400         delete $suppress_cc{'all'};
401 }
402
403 # If explicit old-style ones are specified, they trump --suppress-cc.
404 $suppress_cc{'self'} = $suppress_from if defined $suppress_from;
405 $suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
406
407 if ($suppress_cc{'body'}) {
408         foreach my $entry (qw (sob bodycc)) {
409                 $suppress_cc{$entry} = 1;
410         }
411         delete $suppress_cc{'body'};
412 }
413
414 # Set confirm's default value
415 my $confirm_unconfigured = !defined $confirm;
416 if ($confirm_unconfigured) {
417         $confirm = scalar %suppress_cc ? 'compose' : 'auto';
418 };
419 die "Unknown --confirm setting: '$confirm'\n"
420         unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
421
422 # Debugging, print out the suppressions.
423 if (0) {
424         print "suppressions:\n";
425         foreach my $entry (keys %suppress_cc) {
426                 printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
427         }
428 }
429
430 my ($repoauthor, $repocommitter);
431 ($repoauthor) = Git::ident_person(@repo, 'author');
432 ($repocommitter) = Git::ident_person(@repo, 'committer');
433
434 # Verify the user input
435
436 foreach my $entry (@initial_to) {
437         die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
438 }
439
440 foreach my $entry (@initial_cc) {
441         die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
442 }
443
444 foreach my $entry (@bcclist) {
445         die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
446 }
447
448 sub parse_address_line {
449         if ($have_mail_address) {
450                 return map { $_->format } Mail::Address->parse($_[0]);
451         } else {
452                 return split_addrs($_[0]);
453         }
454 }
455
456 sub split_addrs {
457         return quotewords('\s*,\s*', 1, @_);
458 }
459
460 my %aliases;
461 my %parse_alias = (
462         # multiline formats can be supported in the future
463         mutt => sub { my $fh = shift; while (<$fh>) {
464                 if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
465                         my ($alias, $addr) = ($1, $2);
466                         $addr =~ s/#.*$//; # mutt allows # comments
467                          # commas delimit multiple addresses
468                         $aliases{$alias} = [ split_addrs($addr) ];
469                 }}},
470         mailrc => sub { my $fh = shift; while (<$fh>) {
471                 if (/^alias\s+(\S+)\s+(.*)$/) {
472                         # spaces delimit multiple addresses
473                         $aliases{$1} = [ quotewords('\s+', 0, $2) ];
474                 }}},
475         pine => sub { my $fh = shift; my $f='\t[^\t]*';
476                 for (my $x = ''; defined($x); $x = $_) {
477                         chomp $x;
478                         $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
479                         $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
480                         $aliases{$1} = [ split_addrs($2) ];
481                 }},
482         elm => sub  { my $fh = shift;
483                       while (<$fh>) {
484                           if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
485                               my ($alias, $addr) = ($1, $2);
486                                $aliases{$alias} = [ split_addrs($addr) ];
487                           }
488                       } },
489
490         gnus => sub { my $fh = shift; while (<$fh>) {
491                 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
492                         $aliases{$1} = [ $2 ];
493                 }}}
494 );
495
496 if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
497         foreach my $file (@alias_files) {
498                 open my $fh, '<', $file or die "opening $file: $!\n";
499                 $parse_alias{$aliasfiletype}->($fh);
500                 close $fh;
501         }
502 }
503
504 ($sender) = expand_aliases($sender) if defined $sender;
505
506 # is_format_patch_arg($f) returns 0 if $f names a patch, or 1 if
507 # $f is a revision list specification to be passed to format-patch.
508 sub is_format_patch_arg {
509         return unless $repo;
510         my $f = shift;
511         try {
512                 $repo->command('rev-parse', '--verify', '--quiet', $f);
513                 if (defined($format_patch)) {
514                         return $format_patch;
515                 }
516                 die(<<EOF);
517 File '$f' exists but it could also be the range of commits
518 to produce patches for.  Please disambiguate by...
519
520     * Saying "./$f" if you mean a file; or
521     * Giving --format-patch option if you mean a range.
522 EOF
523         } catch Git::Error::Command with {
524                 # Not a valid revision.  Treat it as a filename.
525                 return 0;
526         }
527 }
528
529 # Now that all the defaults are set, process the rest of the command line
530 # arguments and collect up the files that need to be processed.
531 my @rev_list_opts;
532 while (defined(my $f = shift @ARGV)) {
533         if ($f eq "--") {
534                 push @rev_list_opts, "--", @ARGV;
535                 @ARGV = ();
536         } elsif (-d $f and !is_format_patch_arg($f)) {
537                 opendir my $dh, $f
538                         or die "Failed to opendir $f: $!";
539
540                 push @files, grep { -f $_ } map { catfile($f, $_) }
541                                 sort readdir $dh;
542                 closedir $dh;
543         } elsif ((-f $f or -p $f) and !is_format_patch_arg($f)) {
544                 push @files, $f;
545         } else {
546                 push @rev_list_opts, $f;
547         }
548 }
549
550 if (@rev_list_opts) {
551         die "Cannot run git format-patch from outside a repository\n"
552                 unless $repo;
553         push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
554 }
555
556 if ($validate) {
557         foreach my $f (@files) {
558                 unless (-p $f) {
559                         my $error = validate_patch($f);
560                         $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
561                 }
562         }
563 }
564
565 if (@files) {
566         unless ($quiet) {
567                 print $_,"\n" for (@files);
568         }
569 } else {
570         print STDERR "\nNo patch files specified!\n\n";
571         usage();
572 }
573
574 sub get_patch_subject {
575         my $fn = shift;
576         open (my $fh, '<', $fn);
577         while (my $line = <$fh>) {
578                 next unless ($line =~ /^Subject: (.*)$/);
579                 close $fh;
580                 return "GIT: $1\n";
581         }
582         close $fh;
583         die "No subject line in $fn ?";
584 }
585
586 if ($compose) {
587         # Note that this does not need to be secure, but we will make a small
588         # effort to have it be unique
589         $compose_filename = ($repo ?
590                 tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
591                 tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
592         open my $c, ">", $compose_filename
593                 or die "Failed to open for writing $compose_filename: $!";
594
595
596         my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
597         my $tpl_subject = $initial_subject || '';
598         my $tpl_reply_to = $initial_reply_to || '';
599
600         print $c <<EOT;
601 From $tpl_sender # This line is ignored.
602 GIT: Lines beginning in "GIT:" will be removed.
603 GIT: Consider including an overall diffstat or table of contents
604 GIT: for the patch you are writing.
605 GIT:
606 GIT: Clear the body content if you don't wish to send a summary.
607 From: $tpl_sender
608 Subject: $tpl_subject
609 In-Reply-To: $tpl_reply_to
610
611 EOT
612         for my $f (@files) {
613                 print $c get_patch_subject($f);
614         }
615         close $c;
616
617         if ($annotate) {
618                 do_edit($compose_filename, @files);
619         } else {
620                 do_edit($compose_filename);
621         }
622
623         open my $c2, ">", $compose_filename . ".final"
624                 or die "Failed to open $compose_filename.final : " . $!;
625
626         open $c, "<", $compose_filename
627                 or die "Failed to open $compose_filename : " . $!;
628
629         my $need_8bit_cte = file_has_nonascii($compose_filename);
630         my $in_body = 0;
631         my $summary_empty = 1;
632         if (!defined $compose_encoding) {
633                 $compose_encoding = "UTF-8";
634         }
635         while(<$c>) {
636                 next if m/^GIT:/;
637                 if ($in_body) {
638                         $summary_empty = 0 unless (/^\n$/);
639                 } elsif (/^\n$/) {
640                         $in_body = 1;
641                         if ($need_8bit_cte) {
642                                 print $c2 "MIME-Version: 1.0\n",
643                                          "Content-Type: text/plain; ",
644                                            "charset=$compose_encoding\n",
645                                          "Content-Transfer-Encoding: 8bit\n";
646                         }
647                 } elsif (/^MIME-Version:/i) {
648                         $need_8bit_cte = 0;
649                 } elsif (/^Subject:\s*(.+)\s*$/i) {
650                         $initial_subject = $1;
651                         my $subject = $initial_subject;
652                         $_ = "Subject: " .
653                                 quote_subject($subject, $compose_encoding) .
654                                 "\n";
655                 } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
656                         $initial_reply_to = $1;
657                         next;
658                 } elsif (/^From:\s*(.+)\s*$/i) {
659                         $sender = $1;
660                         next;
661                 } elsif (/^(?:To|Cc|Bcc):/i) {
662                         print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
663                         next;
664                 }
665                 print $c2 $_;
666         }
667         close $c;
668         close $c2;
669
670         if ($summary_empty) {
671                 print "Summary email is empty, skipping it\n";
672                 $compose = -1;
673         }
674 } elsif ($annotate) {
675         do_edit(@files);
676 }
677
678 sub ask {
679         my ($prompt, %arg) = @_;
680         my $valid_re = $arg{valid_re};
681         my $default = $arg{default};
682         my $confirm_only = $arg{confirm_only};
683         my $resp;
684         my $i = 0;
685         return defined $default ? $default : undef
686                 unless defined $term->IN and defined fileno($term->IN) and
687                        defined $term->OUT and defined fileno($term->OUT);
688         while ($i++ < 10) {
689                 $resp = $term->readline($prompt);
690                 if (!defined $resp) { # EOF
691                         print "\n";
692                         return defined $default ? $default : undef;
693                 }
694                 if ($resp eq '' and defined $default) {
695                         return $default;
696                 }
697                 if (!defined $valid_re or $resp =~ /$valid_re/) {
698                         return $resp;
699                 }
700                 if ($confirm_only) {
701                         my $yesno = $term->readline("Are you sure you want to use <$resp> [y/N]? ");
702                         if (defined $yesno && $yesno =~ /y/i) {
703                                 return $resp;
704                         }
705                 }
706         }
707         return;
708 }
709
710 my %broken_encoding;
711
712 sub file_declares_8bit_cte {
713         my $fn = shift;
714         open (my $fh, '<', $fn);
715         while (my $line = <$fh>) {
716                 last if ($line =~ /^$/);
717                 return 1 if ($line =~ /^Content-Transfer-Encoding: .*8bit.*$/);
718         }
719         close $fh;
720         return 0;
721 }
722
723 foreach my $f (@files) {
724         next unless (body_or_subject_has_nonascii($f)
725                      && !file_declares_8bit_cte($f));
726         $broken_encoding{$f} = 1;
727 }
728
729 if (!defined $auto_8bit_encoding && scalar %broken_encoding) {
730         print "The following files are 8bit, but do not declare " .
731                 "a Content-Transfer-Encoding.\n";
732         foreach my $f (sort keys %broken_encoding) {
733                 print "    $f\n";
734         }
735         $auto_8bit_encoding = ask("Which 8bit encoding should I declare [UTF-8]? ",
736                                   default => "UTF-8");
737 }
738
739 if (!$force) {
740         for my $f (@files) {
741                 if (get_patch_subject($f) =~ /\Q*** SUBJECT HERE ***\E/) {
742                         die "Refusing to send because the patch\n\t$f\n"
743                                 . "has the template subject '*** SUBJECT HERE ***'. "
744                                 . "Pass --force if you really want to send.\n";
745                 }
746         }
747 }
748
749 if (!defined $sender) {
750         $sender = $repoauthor || $repocommitter || '';
751 }
752
753 # $sender could be an already sanitized address
754 # (e.g. sendemail.from could be manually sanitized by user).
755 # But it's a no-op to run sanitize_address on an already sanitized address.
756 $sender = sanitize_address($sender);
757
758 my $prompting = 0;
759 if (!@initial_to && !defined $to_cmd) {
760         my $to = ask("Who should the emails be sent to (if any)? ",
761                      default => "",
762                      valid_re => qr/\@.*\./, confirm_only => 1);
763         push @initial_to, parse_address_line($to) if defined $to; # sanitized/validated later
764         $prompting++;
765 }
766
767 sub expand_aliases {
768         return map { expand_one_alias($_) } @_;
769 }
770
771 my %EXPANDED_ALIASES;
772 sub expand_one_alias {
773         my $alias = shift;
774         if ($EXPANDED_ALIASES{$alias}) {
775                 die "fatal: alias '$alias' expands to itself\n";
776         }
777         local $EXPANDED_ALIASES{$alias} = 1;
778         return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
779 }
780
781 @initial_to = expand_aliases(@initial_to);
782 @initial_to = validate_address_list(sanitize_address_list(@initial_to));
783 @initial_cc = expand_aliases(@initial_cc);
784 @initial_cc = validate_address_list(sanitize_address_list(@initial_cc));
785 @bcclist = expand_aliases(@bcclist);
786 @bcclist = validate_address_list(sanitize_address_list(@bcclist));
787
788 if ($thread && !defined $initial_reply_to && $prompting) {
789         $initial_reply_to = ask(
790                 "Message-ID to be used as In-Reply-To for the first email (if any)? ",
791                 default => "",
792                 valid_re => qr/\@.*\./, confirm_only => 1);
793 }
794 if (defined $initial_reply_to) {
795         $initial_reply_to =~ s/^\s*<?//;
796         $initial_reply_to =~ s/>?\s*$//;
797         $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
798 }
799
800 if (!defined $smtp_server) {
801         foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
802                 if (-x $_) {
803                         $smtp_server = $_;
804                         last;
805                 }
806         }
807         $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
808 }
809
810 if ($compose && $compose > 0) {
811         @files = ($compose_filename . ".final", @files);
812 }
813
814 # Variables we set as part of the loop over files
815 our ($message_id, %mail, $subject, $reply_to, $references, $message,
816         $needs_confirm, $message_num, $ask_default);
817
818 sub extract_valid_address {
819         my $address = shift;
820         my $local_part_regexp = qr/[^<>"\s@]+/;
821         my $domain_regexp = qr/[^.<>"\s@]+(?:\.[^.<>"\s@]+)+/;
822
823         # check for a local address:
824         return $address if ($address =~ /^($local_part_regexp)$/);
825
826         $address =~ s/^\s*<(.*)>\s*$/$1/;
827         if ($have_email_valid) {
828                 return scalar Email::Valid->address($address);
829         }
830
831         # less robust/correct than the monster regexp in Email::Valid,
832         # but still does a 99% job, and one less dependency
833         return $1 if $address =~ /($local_part_regexp\@$domain_regexp)/;
834         return;
835 }
836
837 sub extract_valid_address_or_die {
838         my $address = shift;
839         $address = extract_valid_address($address);
840         die "error: unable to extract a valid address from: $address\n"
841                 if !$address;
842         return $address;
843 }
844
845 sub validate_address {
846         my $address = shift;
847         while (!extract_valid_address($address)) {
848                 print STDERR "error: unable to extract a valid address from: $address\n";
849                 $_ = ask("What to do with this address? ([q]uit|[d]rop|[e]dit): ",
850                         valid_re => qr/^(?:quit|q|drop|d|edit|e)/i,
851                         default => 'q');
852                 if (/^d/i) {
853                         return undef;
854                 } elsif (/^q/i) {
855                         cleanup_compose_files();
856                         exit(0);
857                 }
858                 $address = ask("Who should the email be sent to (if any)? ",
859                         default => "",
860                         valid_re => qr/\@.*\./, confirm_only => 1);
861         }
862         return $address;
863 }
864
865 sub validate_address_list {
866         return (grep { defined $_ }
867                 map { validate_address($_) } @_);
868 }
869
870 # Usually don't need to change anything below here.
871
872 # we make a "fake" message id by taking the current number
873 # of seconds since the beginning of Unix time and tacking on
874 # a random number to the end, in case we are called quicker than
875 # 1 second since the last time we were called.
876
877 # We'll setup a template for the message id, using the "from" address:
878
879 my ($message_id_stamp, $message_id_serial);
880 sub make_message_id {
881         my $uniq;
882         if (!defined $message_id_stamp) {
883                 $message_id_stamp = sprintf("%s-%s", time, $$);
884                 $message_id_serial = 0;
885         }
886         $message_id_serial++;
887         $uniq = "$message_id_stamp-$message_id_serial";
888
889         my $du_part;
890         for ($sender, $repocommitter, $repoauthor) {
891                 $du_part = extract_valid_address(sanitize_address($_));
892                 last if (defined $du_part and $du_part ne '');
893         }
894         if (not defined $du_part or $du_part eq '') {
895                 require Sys::Hostname;
896                 $du_part = 'user@' . Sys::Hostname::hostname();
897         }
898         my $message_id_template = "<%s-git-send-email-%s>";
899         $message_id = sprintf($message_id_template, $uniq, $du_part);
900         #print "new message id = $message_id\n"; # Was useful for debugging
901 }
902
903
904
905 $time = time - scalar $#files;
906
907 sub unquote_rfc2047 {
908         local ($_) = @_;
909         my $encoding;
910         s{=\?([^?]+)\?q\?(.*?)\?=}{
911                 $encoding = $1;
912                 my $e = $2;
913                 $e =~ s/_/ /g;
914                 $e =~ s/=([0-9A-F]{2})/chr(hex($1))/eg;
915                 $e;
916         }eg;
917         return wantarray ? ($_, $encoding) : $_;
918 }
919
920 sub quote_rfc2047 {
921         local $_ = shift;
922         my $encoding = shift || 'UTF-8';
923         s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
924         s/(.*)/=\?$encoding\?q\?$1\?=/;
925         return $_;
926 }
927
928 sub is_rfc2047_quoted {
929         my $s = shift;
930         my $token = qr/[^][()<>@,;:"\/?.= \000-\037\177-\377]+/;
931         my $encoded_text = qr/[!->@-~]+/;
932         length($s) <= 75 &&
933         $s =~ m/^(?:"[[:ascii:]]*"|=\?$token\?$token\?$encoded_text\?=)$/o;
934 }
935
936 sub subject_needs_rfc2047_quoting {
937         my $s = shift;
938
939         return ($s =~ /[^[:ascii:]]/) || ($s =~ /=\?/);
940 }
941
942 sub quote_subject {
943         local $subject = shift;
944         my $encoding = shift || 'UTF-8';
945
946         if (subject_needs_rfc2047_quoting($subject)) {
947                 return quote_rfc2047($subject, $encoding);
948         }
949         return $subject;
950 }
951
952 # use the simplest quoting being able to handle the recipient
953 sub sanitize_address {
954         my ($recipient) = @_;
955
956         # remove garbage after email address
957         $recipient =~ s/(.*>).*$/$1/;
958
959         my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
960
961         if (not $recipient_name) {
962                 return $recipient;
963         }
964
965         # if recipient_name is already quoted, do nothing
966         if (is_rfc2047_quoted($recipient_name)) {
967                 return $recipient;
968         }
969
970         # rfc2047 is needed if a non-ascii char is included
971         if ($recipient_name =~ /[^[:ascii:]]/) {
972                 $recipient_name =~ s/^"(.*)"$/$1/;
973                 $recipient_name = quote_rfc2047($recipient_name);
974         }
975
976         # double quotes are needed if specials or CTLs are included
977         elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
978                 $recipient_name =~ s/(["\\\r])/\\$1/g;
979                 $recipient_name = qq["$recipient_name"];
980         }
981
982         return "$recipient_name $recipient_addr";
983
984 }
985
986 sub sanitize_address_list {
987         return (map { sanitize_address($_) } @_);
988 }
989
990 # Returns the local Fully Qualified Domain Name (FQDN) if available.
991 #
992 # Tightly configured MTAa require that a caller sends a real DNS
993 # domain name that corresponds the IP address in the HELO/EHLO
994 # handshake. This is used to verify the connection and prevent
995 # spammers from trying to hide their identity. If the DNS and IP don't
996 # match, the receiveing MTA may deny the connection.
997 #
998 # Here is a deny example of Net::SMTP with the default "localhost.localdomain"
999 #
1000 # Net::SMTP=GLOB(0x267ec28)>>> EHLO localhost.localdomain
1001 # Net::SMTP=GLOB(0x267ec28)<<< 550 EHLO argument does not match calling host
1002 #
1003 # This maildomain*() code is based on ideas in Perl library Test::Reporter
1004 # /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
1005
1006 sub valid_fqdn {
1007         my $domain = shift;
1008         return defined $domain && !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./;
1009 }
1010
1011 sub maildomain_net {
1012         my $maildomain;
1013
1014         if (eval { require Net::Domain; 1 }) {
1015                 my $domain = Net::Domain::domainname();
1016                 $maildomain = $domain if valid_fqdn($domain);
1017         }
1018
1019         return $maildomain;
1020 }
1021
1022 sub maildomain_mta {
1023         my $maildomain;
1024
1025         if (eval { require Net::SMTP; 1 }) {
1026                 for my $host (qw(mailhost localhost)) {
1027                         my $smtp = Net::SMTP->new($host);
1028                         if (defined $smtp) {
1029                                 my $domain = $smtp->domain;
1030                                 $smtp->quit;
1031
1032                                 $maildomain = $domain if valid_fqdn($domain);
1033
1034                                 last if $maildomain;
1035                         }
1036                 }
1037         }
1038
1039         return $maildomain;
1040 }
1041
1042 sub maildomain {
1043         return maildomain_net() || maildomain_mta() || 'localhost.localdomain';
1044 }
1045
1046 sub smtp_host_string {
1047         if (defined $smtp_server_port) {
1048                 return "$smtp_server:$smtp_server_port";
1049         } else {
1050                 return $smtp_server;
1051         }
1052 }
1053
1054 # Returns 1 if authentication succeeded or was not necessary
1055 # (smtp_user was not specified), and 0 otherwise.
1056
1057 sub smtp_auth_maybe {
1058         if (!defined $smtp_authuser || $auth) {
1059                 return 1;
1060         }
1061
1062         # Workaround AUTH PLAIN/LOGIN interaction defect
1063         # with Authen::SASL::Cyrus
1064         eval {
1065                 require Authen::SASL;
1066                 Authen::SASL->import(qw(Perl));
1067         };
1068
1069         # TODO: Authentication may fail not because credentials were
1070         # invalid but due to other reasons, in which we should not
1071         # reject credentials.
1072         $auth = Git::credential({
1073                 'protocol' => 'smtp',
1074                 'host' => smtp_host_string(),
1075                 'username' => $smtp_authuser,
1076                 # if there's no password, "git credential fill" will
1077                 # give us one, otherwise it'll just pass this one.
1078                 'password' => $smtp_authpass
1079         }, sub {
1080                 my $cred = shift;
1081                 return !!$smtp->auth($cred->{'username'}, $cred->{'password'});
1082         });
1083
1084         return $auth;
1085 }
1086
1087 sub ssl_verify_params {
1088         eval {
1089                 require IO::Socket::SSL;
1090                 IO::Socket::SSL->import(qw/SSL_VERIFY_PEER SSL_VERIFY_NONE/);
1091         };
1092         if ($@) {
1093                 print STDERR "Not using SSL_VERIFY_PEER due to out-of-date IO::Socket::SSL.\n";
1094                 return;
1095         }
1096
1097         if (!defined $smtp_ssl_cert_path) {
1098                 # use the OpenSSL defaults
1099                 return (SSL_verify_mode => SSL_VERIFY_PEER());
1100         }
1101
1102         if ($smtp_ssl_cert_path eq "") {
1103                 return (SSL_verify_mode => SSL_VERIFY_NONE());
1104         } elsif (-d $smtp_ssl_cert_path) {
1105                 return (SSL_verify_mode => SSL_VERIFY_PEER(),
1106                         SSL_ca_path => $smtp_ssl_cert_path);
1107         } elsif (-f $smtp_ssl_cert_path) {
1108                 return (SSL_verify_mode => SSL_VERIFY_PEER(),
1109                         SSL_ca_file => $smtp_ssl_cert_path);
1110         } else {
1111                 print STDERR "Not using SSL_VERIFY_PEER because the CA path does not exist.\n";
1112                 return (SSL_verify_mode => SSL_VERIFY_NONE());
1113         }
1114 }
1115
1116 # Returns 1 if the message was sent, and 0 otherwise.
1117 # In actuality, the whole program dies when there
1118 # is an error sending a message.
1119
1120 sub send_message {
1121         my @recipients = unique_email_list(@to);
1122         @cc = (grep { my $cc = extract_valid_address_or_die($_);
1123                       not grep { $cc eq $_ || $_ =~ /<\Q${cc}\E>$/ } @recipients
1124                     }
1125                @cc);
1126         my $to = join (",\n\t", @recipients);
1127         @recipients = unique_email_list(@recipients,@cc,@bcclist);
1128         @recipients = (map { extract_valid_address_or_die($_) } @recipients);
1129         my $date = format_2822_time($time++);
1130         my $gitversion = '@@GIT_VERSION@@';
1131         if ($gitversion =~ m/..GIT_VERSION../) {
1132             $gitversion = Git::version();
1133         }
1134
1135         my $cc = join(",\n\t", unique_email_list(@cc));
1136         my $ccline = "";
1137         if ($cc ne '') {
1138                 $ccline = "\nCc: $cc";
1139         }
1140         make_message_id() unless defined($message_id);
1141
1142         my $header = "From: $sender
1143 To: $to${ccline}
1144 Subject: $subject
1145 Date: $date
1146 Message-Id: $message_id
1147 X-Mailer: git-send-email $gitversion
1148 ";
1149         if ($reply_to) {
1150
1151                 $header .= "In-Reply-To: $reply_to\n";
1152                 $header .= "References: $references\n";
1153         }
1154         if (@xh) {
1155                 $header .= join("\n", @xh) . "\n";
1156         }
1157
1158         my @sendmail_parameters = ('-i', @recipients);
1159         my $raw_from = $sender;
1160         if (defined $envelope_sender && $envelope_sender ne "auto") {
1161                 $raw_from = $envelope_sender;
1162         }
1163         $raw_from = extract_valid_address($raw_from);
1164         unshift (@sendmail_parameters,
1165                         '-f', $raw_from) if(defined $envelope_sender);
1166
1167         if ($needs_confirm && !$dry_run) {
1168                 print "\n$header\n";
1169                 if ($needs_confirm eq "inform") {
1170                         $confirm_unconfigured = 0; # squelch this message for the rest of this run
1171                         $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
1172                         print "    The Cc list above has been expanded by additional\n";
1173                         print "    addresses found in the patch commit message. By default\n";
1174                         print "    send-email prompts before sending whenever this occurs.\n";
1175                         print "    This behavior is controlled by the sendemail.confirm\n";
1176                         print "    configuration setting.\n";
1177                         print "\n";
1178                         print "    For additional information, run 'git send-email --help'.\n";
1179                         print "    To retain the current behavior, but squelch this message,\n";
1180                         print "    run 'git config --global sendemail.confirm auto'.\n\n";
1181                 }
1182                 $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ",
1183                          valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
1184                          default => $ask_default);
1185                 die "Send this email reply required" unless defined $_;
1186                 if (/^n/i) {
1187                         return 0;
1188                 } elsif (/^q/i) {
1189                         cleanup_compose_files();
1190                         exit(0);
1191                 } elsif (/^a/i) {
1192                         $confirm = 'never';
1193                 }
1194         }
1195
1196         unshift (@sendmail_parameters, @smtp_server_options);
1197
1198         if ($dry_run) {
1199                 # We don't want to send the email.
1200         } elsif ($smtp_server =~ m#^/#) {
1201                 my $pid = open my $sm, '|-';
1202                 defined $pid or die $!;
1203                 if (!$pid) {
1204                         exec($smtp_server, @sendmail_parameters) or die $!;
1205                 }
1206                 print $sm "$header\n$message";
1207                 close $sm or die $!;
1208         } else {
1209
1210                 if (!defined $smtp_server) {
1211                         die "The required SMTP server is not properly defined."
1212                 }
1213
1214                 if ($smtp_encryption eq 'ssl') {
1215                         $smtp_server_port ||= 465; # ssmtp
1216                         require Net::SMTP::SSL;
1217                         $smtp_domain ||= maildomain();
1218                         require IO::Socket::SSL;
1219                         # Net::SMTP::SSL->new() does not forward any SSL options
1220                         IO::Socket::SSL::set_client_defaults(
1221                                 ssl_verify_params());
1222                         $smtp ||= Net::SMTP::SSL->new($smtp_server,
1223                                                       Hello => $smtp_domain,
1224                                                       Port => $smtp_server_port,
1225                                                       Debug => $debug_net_smtp);
1226                 }
1227                 else {
1228                         require Net::SMTP;
1229                         $smtp_domain ||= maildomain();
1230                         $smtp_server_port ||= 25;
1231                         $smtp ||= Net::SMTP->new($smtp_server,
1232                                                  Hello => $smtp_domain,
1233                                                  Debug => $debug_net_smtp,
1234                                                  Port => $smtp_server_port);
1235                         if ($smtp_encryption eq 'tls' && $smtp) {
1236                                 require Net::SMTP::SSL;
1237                                 $smtp->command('STARTTLS');
1238                                 $smtp->response();
1239                                 if ($smtp->code == 220) {
1240                                         $smtp = Net::SMTP::SSL->start_SSL($smtp,
1241                                                                           ssl_verify_params())
1242                                                 or die "STARTTLS failed! ".IO::Socket::SSL::errstr();
1243                                         $smtp_encryption = '';
1244                                         # Send EHLO again to receive fresh
1245                                         # supported commands
1246                                         $smtp->hello($smtp_domain);
1247                                 } else {
1248                                         die "Server does not support STARTTLS! ".$smtp->message;
1249                                 }
1250                         }
1251                 }
1252
1253                 if (!$smtp) {
1254                         die "Unable to initialize SMTP properly. Check config and use --smtp-debug. ",
1255                             "VALUES: server=$smtp_server ",
1256                             "encryption=$smtp_encryption ",
1257                             "hello=$smtp_domain",
1258                             defined $smtp_server_port ? " port=$smtp_server_port" : "";
1259                 }
1260
1261                 smtp_auth_maybe or die $smtp->message;
1262
1263                 $smtp->mail( $raw_from ) or die $smtp->message;
1264                 $smtp->to( @recipients ) or die $smtp->message;
1265                 $smtp->data or die $smtp->message;
1266                 $smtp->datasend("$header\n$message") or die $smtp->message;
1267                 $smtp->dataend() or die $smtp->message;
1268                 $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message;
1269         }
1270         if ($quiet) {
1271                 printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
1272         } else {
1273                 print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
1274                 if ($smtp_server !~ m#^/#) {
1275                         print "Server: $smtp_server\n";
1276                         print "MAIL FROM:<$raw_from>\n";
1277                         foreach my $entry (@recipients) {
1278                             print "RCPT TO:<$entry>\n";
1279                         }
1280                 } else {
1281                         print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
1282                 }
1283                 print $header, "\n";
1284                 if ($smtp) {
1285                         print "Result: ", $smtp->code, ' ',
1286                                 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
1287                 } else {
1288                         print "Result: OK\n";
1289                 }
1290         }
1291
1292         return 1;
1293 }
1294
1295 $reply_to = $initial_reply_to;
1296 $references = $initial_reply_to || '';
1297 $subject = $initial_subject;
1298 $message_num = 0;
1299
1300 foreach my $t (@files) {
1301         open my $fh, "<", $t or die "can't open file $t";
1302
1303         my $author = undef;
1304         my $sauthor = undef;
1305         my $author_encoding;
1306         my $has_content_type;
1307         my $body_encoding;
1308         @to = ();
1309         @cc = ();
1310         @xh = ();
1311         my $input_format = undef;
1312         my @header = ();
1313         $message = "";
1314         $message_num++;
1315         # First unfold multiline header fields
1316         while(<$fh>) {
1317                 last if /^\s*$/;
1318                 if (/^\s+\S/ and @header) {
1319                         chomp($header[$#header]);
1320                         s/^\s+/ /;
1321                         $header[$#header] .= $_;
1322             } else {
1323                         push(@header, $_);
1324                 }
1325         }
1326         # Now parse the header
1327         foreach(@header) {
1328                 if (/^From /) {
1329                         $input_format = 'mbox';
1330                         next;
1331                 }
1332                 chomp;
1333                 if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1334                         $input_format = 'mbox';
1335                 }
1336
1337                 if (defined $input_format && $input_format eq 'mbox') {
1338                         if (/^Subject:\s+(.*)$/i) {
1339                                 $subject = $1;
1340                         }
1341                         elsif (/^From:\s+(.*)$/i) {
1342                                 ($author, $author_encoding) = unquote_rfc2047($1);
1343                                 $sauthor = sanitize_address($author);
1344                                 next if $suppress_cc{'author'};
1345                                 next if $suppress_cc{'self'} and $sauthor eq $sender;
1346                                 printf("(mbox) Adding cc: %s from line '%s'\n",
1347                                         $1, $_) unless $quiet;
1348                                 push @cc, $1;
1349                         }
1350                         elsif (/^To:\s+(.*)$/i) {
1351                                 foreach my $addr (parse_address_line($1)) {
1352                                         printf("(mbox) Adding to: %s from line '%s'\n",
1353                                                 $addr, $_) unless $quiet;
1354                                         push @to, $addr;
1355                                 }
1356                         }
1357                         elsif (/^Cc:\s+(.*)$/i) {
1358                                 foreach my $addr (parse_address_line($1)) {
1359                                         my $qaddr = unquote_rfc2047($addr);
1360                                         my $saddr = sanitize_address($qaddr);
1361                                         if ($saddr eq $sender) {
1362                                                 next if ($suppress_cc{'self'});
1363                                         } else {
1364                                                 next if ($suppress_cc{'cc'});
1365                                         }
1366                                         printf("(mbox) Adding cc: %s from line '%s'\n",
1367                                                 $addr, $_) unless $quiet;
1368                                         push @cc, $addr;
1369                                 }
1370                         }
1371                         elsif (/^Content-type:/i) {
1372                                 $has_content_type = 1;
1373                                 if (/charset="?([^ "]+)/) {
1374                                         $body_encoding = $1;
1375                                 }
1376                                 push @xh, $_;
1377                         }
1378                         elsif (/^Message-Id: (.*)/i) {
1379                                 $message_id = $1;
1380                         }
1381                         elsif (!/^Date:\s/i && /^[-A-Za-z]+:\s+\S/) {
1382                                 push @xh, $_;
1383                         }
1384
1385                 } else {
1386                         # In the traditional
1387                         # "send lots of email" format,
1388                         # line 1 = cc
1389                         # line 2 = subject
1390                         # So let's support that, too.
1391                         $input_format = 'lots';
1392                         if (@cc == 0 && !$suppress_cc{'cc'}) {
1393                                 printf("(non-mbox) Adding cc: %s from line '%s'\n",
1394                                         $_, $_) unless $quiet;
1395                                 push @cc, $_;
1396                         } elsif (!defined $subject) {
1397                                 $subject = $_;
1398                         }
1399                 }
1400         }
1401         # Now parse the message body
1402         while(<$fh>) {
1403                 $message .=  $_;
1404                 if (/^(Signed-off-by|Cc): (.*)$/i) {
1405                         chomp;
1406                         my ($what, $c) = ($1, $2);
1407                         chomp $c;
1408                         my $sc = sanitize_address($c);
1409                         if ($sc eq $sender) {
1410                                 next if ($suppress_cc{'self'});
1411                         } else {
1412                                 next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1413                                 next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1414                         }
1415                         push @cc, $c;
1416                         printf("(body) Adding cc: %s from line '%s'\n",
1417                                 $c, $_) unless $quiet;
1418                 }
1419         }
1420         close $fh;
1421
1422         push @to, recipients_cmd("to-cmd", "to", $to_cmd, $t)
1423                 if defined $to_cmd;
1424         push @cc, recipients_cmd("cc-cmd", "cc", $cc_cmd, $t)
1425                 if defined $cc_cmd && !$suppress_cc{'cccmd'};
1426
1427         if ($broken_encoding{$t} && !$has_content_type) {
1428                 $has_content_type = 1;
1429                 push @xh, "MIME-Version: 1.0",
1430                         "Content-Type: text/plain; charset=$auto_8bit_encoding",
1431                         "Content-Transfer-Encoding: 8bit";
1432                 $body_encoding = $auto_8bit_encoding;
1433         }
1434
1435         if ($broken_encoding{$t} && !is_rfc2047_quoted($subject)) {
1436                 $subject = quote_subject($subject, $auto_8bit_encoding);
1437         }
1438
1439         if (defined $sauthor and $sauthor ne $sender) {
1440                 $message = "From: $author\n\n$message";
1441                 if (defined $author_encoding) {
1442                         if ($has_content_type) {
1443                                 if ($body_encoding eq $author_encoding) {
1444                                         # ok, we already have the right encoding
1445                                 }
1446                                 else {
1447                                         # uh oh, we should re-encode
1448                                 }
1449                         }
1450                         else {
1451                                 $has_content_type = 1;
1452                                 push @xh,
1453                                   'MIME-Version: 1.0',
1454                                   "Content-Type: text/plain; charset=$author_encoding",
1455                                   'Content-Transfer-Encoding: 8bit';
1456                         }
1457                 }
1458         }
1459
1460         $needs_confirm = (
1461                 $confirm eq "always" or
1462                 ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1463                 ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1464         $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1465
1466         @to = validate_address_list(sanitize_address_list(@to));
1467         @cc = validate_address_list(sanitize_address_list(@cc));
1468
1469         @to = (@initial_to, @to);
1470         @cc = (@initial_cc, @cc);
1471
1472         my $message_was_sent = send_message();
1473
1474         # set up for the next message
1475         if ($thread && $message_was_sent &&
1476                 ($chain_reply_to || !defined $reply_to || length($reply_to) == 0 ||
1477                 $message_num == 1)) {
1478                 $reply_to = $message_id;
1479                 if (length $references > 0) {
1480                         $references .= "\n $message_id";
1481                 } else {
1482                         $references = "$message_id";
1483                 }
1484         }
1485         $message_id = undef;
1486 }
1487
1488 # Execute a command (e.g. $to_cmd) to get a list of email addresses
1489 # and return a results array
1490 sub recipients_cmd {
1491         my ($prefix, $what, $cmd, $file) = @_;
1492
1493         my @addresses = ();
1494         open my $fh, "-|", "$cmd \Q$file\E"
1495             or die "($prefix) Could not execute '$cmd'";
1496         while (my $address = <$fh>) {
1497                 $address =~ s/^\s*//g;
1498                 $address =~ s/\s*$//g;
1499                 $address = sanitize_address($address);
1500                 next if ($address eq $sender and $suppress_cc{'self'});
1501                 push @addresses, $address;
1502                 printf("($prefix) Adding %s: %s from: '%s'\n",
1503                        $what, $address, $cmd) unless $quiet;
1504                 }
1505         close $fh
1506             or die "($prefix) failed to close pipe to '$cmd'";
1507         return @addresses;
1508 }
1509
1510 cleanup_compose_files();
1511
1512 sub cleanup_compose_files {
1513         unlink($compose_filename, $compose_filename . ".final") if $compose;
1514 }
1515
1516 $smtp->quit if $smtp;
1517
1518 sub unique_email_list {
1519         my %seen;
1520         my @emails;
1521
1522         foreach my $entry (@_) {
1523                 my $clean = extract_valid_address_or_die($entry);
1524                 $seen{$clean} ||= 0;
1525                 next if $seen{$clean}++;
1526                 push @emails, $entry;
1527         }
1528         return @emails;
1529 }
1530
1531 sub validate_patch {
1532         my $fn = shift;
1533         open(my $fh, '<', $fn)
1534                 or die "unable to open $fn: $!\n";
1535         while (my $line = <$fh>) {
1536                 if (length($line) > 998) {
1537                         return "$.: patch contains a line longer than 998 characters";
1538                 }
1539         }
1540         return;
1541 }
1542
1543 sub file_has_nonascii {
1544         my $fn = shift;
1545         open(my $fh, '<', $fn)
1546                 or die "unable to open $fn: $!\n";
1547         while (my $line = <$fh>) {
1548                 return 1 if $line =~ /[^[:ascii:]]/;
1549         }
1550         return 0;
1551 }
1552
1553 sub body_or_subject_has_nonascii {
1554         my $fn = shift;
1555         open(my $fh, '<', $fn)
1556                 or die "unable to open $fn: $!\n";
1557         while (my $line = <$fh>) {
1558                 last if $line =~ /^$/;
1559                 return 1 if $line =~ /^Subject.*[^[:ascii:]]/;
1560         }
1561         while (my $line = <$fh>) {
1562                 return 1 if $line =~ /[^[:ascii:]]/;
1563         }
1564         return 0;
1565 }