Merge branch 'bc/http-keep-memory-given-to-curl' into maint
[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-domain           <str>  * The domain name sent to HELO/EHLO handshake
73     --smtp-debug            <0|1>  * Disable, enable Net::SMTP debug.
74
75   Automating:
76     --identity              <str>  * Use the sendemail.<id> options.
77     --to-cmd                <str>  * Email To: via `<str> \$patch_path`
78     --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
79     --suppress-cc           <str>  * author, self, sob, cc, cccmd, body, bodycc, all.
80     --[no-]signed-off-by-cc        * Send to Signed-off-by: addresses. Default on.
81     --[no-]suppress-from           * Send to self. Default off.
82     --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default off.
83     --[no-]thread                  * Use In-Reply-To: field. Default on.
84
85   Administering:
86     --confirm               <str>  * Confirm recipients before sending;
87                                      auto, cc, compose, always, or never.
88     --quiet                        * Output one line of info per email.
89     --dry-run                      * Don't actually send the emails.
90     --[no-]validate                * Perform patch sanity checks. Default on.
91     --[no-]format-patch            * understand any non optional arguments as
92                                      `git format-patch` ones.
93     --force                        * Send even if safety checks would prevent it.
94
95 EOT
96         exit(1);
97 }
98
99 # most mail servers generate the Date: header, but not all...
100 sub format_2822_time {
101         my ($time) = @_;
102         my @localtm = localtime($time);
103         my @gmttm = gmtime($time);
104         my $localmin = $localtm[1] + $localtm[2] * 60;
105         my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
106         if ($localtm[0] != $gmttm[0]) {
107                 die "local zone differs from GMT by a non-minute interval\n";
108         }
109         if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
110                 $localmin += 1440;
111         } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
112                 $localmin -= 1440;
113         } elsif ($gmttm[6] != $localtm[6]) {
114                 die "local time offset greater than or equal to 24 hours\n";
115         }
116         my $offset = $localmin - $gmtmin;
117         my $offhour = $offset / 60;
118         my $offmin = abs($offset % 60);
119         if (abs($offhour) >= 24) {
120                 die ("local time offset greater than or equal to 24 hours\n");
121         }
122
123         return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
124                        qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
125                        $localtm[3],
126                        qw(Jan Feb Mar Apr May Jun
127                           Jul Aug Sep Oct Nov Dec)[$localtm[4]],
128                        $localtm[5]+1900,
129                        $localtm[2],
130                        $localtm[1],
131                        $localtm[0],
132                        ($offset >= 0) ? '+' : '-',
133                        abs($offhour),
134                        $offmin,
135                        );
136 }
137
138 my $have_email_valid = eval { require Email::Valid; 1 };
139 my $have_mail_address = eval { require Mail::Address; 1 };
140 my $smtp;
141 my $auth;
142
143 # Variables we fill in automatically, or via prompting:
144 my (@to,$no_to,@initial_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
145         $initial_reply_to,$initial_subject,@files,
146         $author,$sender,$smtp_authpass,$annotate,$compose,$time);
147
148 my $envelope_sender;
149
150 # Example reply to:
151 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
152
153 my $repo = eval { Git->repository() };
154 my @repo = $repo ? ($repo) : ();
155 my $term = eval {
156         $ENV{"GIT_SEND_EMAIL_NOTTY"}
157                 ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
158                 : new Term::ReadLine 'git-send-email';
159 };
160 if ($@) {
161         $term = new FakeTerm "$@: going non-interactive";
162 }
163
164 # Behavior modification variables
165 my ($quiet, $dry_run) = (0, 0);
166 my $format_patch;
167 my $compose_filename;
168 my $force = 0;
169
170 # Handle interactive edition of files.
171 my $multiedit;
172 my $editor;
173
174 sub do_edit {
175         if (!defined($editor)) {
176                 $editor = Git::command_oneline('var', 'GIT_EDITOR');
177         }
178         if (defined($multiedit) && !$multiedit) {
179                 map {
180                         system('sh', '-c', $editor.' "$@"', $editor, $_);
181                         if (($? & 127) || ($? >> 8)) {
182                                 die("the editor exited uncleanly, aborting everything");
183                         }
184                 } @_;
185         } else {
186                 system('sh', '-c', $editor.' "$@"', $editor, @_);
187                 if (($? & 127) || ($? >> 8)) {
188                         die("the editor exited uncleanly, aborting everything");
189                 }
190         }
191 }
192
193 # Variables with corresponding config settings
194 my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc);
195 my ($to_cmd, $cc_cmd);
196 my ($smtp_server, $smtp_server_port, @smtp_server_options);
197 my ($smtp_authuser, $smtp_encryption);
198 my ($identity, $aliasfiletype, @alias_files, $smtp_domain);
199 my ($validate, $confirm);
200 my (@suppress_cc);
201 my ($auto_8bit_encoding);
202 my ($compose_encoding);
203
204 my ($debug_net_smtp) = 0;               # Net::SMTP, see send_message()
205
206 my $not_set_by_user = "true but not set by the user";
207
208 my %config_bool_settings = (
209     "thread" => [\$thread, 1],
210     "chainreplyto" => [\$chain_reply_to, $not_set_by_user],
211     "suppressfrom" => [\$suppress_from, undef],
212     "signedoffbycc" => [\$signed_off_by_cc, undef],
213     "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
214     "validate" => [\$validate, 1],
215     "multiedit" => [\$multiedit, undef],
216     "annotate" => [\$annotate, undef]
217 );
218
219 my %config_settings = (
220     "smtpserver" => \$smtp_server,
221     "smtpserverport" => \$smtp_server_port,
222     "smtpserveroption" => \@smtp_server_options,
223     "smtpuser" => \$smtp_authuser,
224     "smtppass" => \$smtp_authpass,
225     "smtpdomain" => \$smtp_domain,
226     "to" => \@initial_to,
227     "tocmd" => \$to_cmd,
228     "cc" => \@initial_cc,
229     "cccmd" => \$cc_cmd,
230     "aliasfiletype" => \$aliasfiletype,
231     "bcc" => \@bcclist,
232     "suppresscc" => \@suppress_cc,
233     "envelopesender" => \$envelope_sender,
234     "confirm"   => \$confirm,
235     "from" => \$sender,
236     "assume8bitencoding" => \$auto_8bit_encoding,
237     "composeencoding" => \$compose_encoding,
238 );
239
240 my %config_path_settings = (
241     "aliasesfile" => \@alias_files,
242 );
243
244 # Help users prepare for 1.7.0
245 sub chain_reply_to {
246         if (defined $chain_reply_to &&
247             $chain_reply_to eq $not_set_by_user) {
248                 print STDERR
249                     "In git 1.7.0, the default has changed to --no-chain-reply-to\n" .
250                     "Set sendemail.chainreplyto configuration variable to true if\n" .
251                     "you want to keep --chain-reply-to as your default.\n";
252                 $chain_reply_to = 0;
253         }
254         return $chain_reply_to;
255 }
256
257 # Handle Uncouth Termination
258 sub signal_handler {
259
260         # Make text normal
261         print color("reset"), "\n";
262
263         # SMTP password masked
264         system "stty echo";
265
266         # tmp files from --compose
267         if (defined $compose_filename) {
268                 if (-e $compose_filename) {
269                         print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
270                 }
271                 if (-e ($compose_filename . ".final")) {
272                         print "'$compose_filename.final' contains the composed email.\n"
273                 }
274         }
275
276         exit;
277 };
278
279 $SIG{TERM} = \&signal_handler;
280 $SIG{INT}  = \&signal_handler;
281
282 # Begin by accumulating all the variables (defined above), that we will end up
283 # needing, first, from the command line:
284
285 my $help;
286 my $rc = GetOptions("h" => \$help,
287                     "sender|from=s" => \$sender,
288                     "in-reply-to=s" => \$initial_reply_to,
289                     "subject=s" => \$initial_subject,
290                     "to=s" => \@initial_to,
291                     "to-cmd=s" => \$to_cmd,
292                     "no-to" => \$no_to,
293                     "cc=s" => \@initial_cc,
294                     "no-cc" => \$no_cc,
295                     "bcc=s" => \@bcclist,
296                     "no-bcc" => \$no_bcc,
297                     "chain-reply-to!" => \$chain_reply_to,
298                     "smtp-server=s" => \$smtp_server,
299                     "smtp-server-option=s" => \@smtp_server_options,
300                     "smtp-server-port=s" => \$smtp_server_port,
301                     "smtp-user=s" => \$smtp_authuser,
302                     "smtp-pass:s" => \$smtp_authpass,
303                     "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
304                     "smtp-encryption=s" => \$smtp_encryption,
305                     "smtp-debug:i" => \$debug_net_smtp,
306                     "smtp-domain:s" => \$smtp_domain,
307                     "identity=s" => \$identity,
308                     "annotate!" => \$annotate,
309                     "compose" => \$compose,
310                     "quiet" => \$quiet,
311                     "cc-cmd=s" => \$cc_cmd,
312                     "suppress-from!" => \$suppress_from,
313                     "suppress-cc=s" => \@suppress_cc,
314                     "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
315                     "confirm=s" => \$confirm,
316                     "dry-run" => \$dry_run,
317                     "envelope-sender=s" => \$envelope_sender,
318                     "thread!" => \$thread,
319                     "validate!" => \$validate,
320                     "format-patch!" => \$format_patch,
321                     "8bit-encoding=s" => \$auto_8bit_encoding,
322                     "compose-encoding=s" => \$compose_encoding,
323                     "force" => \$force,
324          );
325
326 usage() if $help;
327 unless ($rc) {
328     usage();
329 }
330
331 die "Cannot run git format-patch from outside a repository\n"
332         if $format_patch and not $repo;
333
334 # Now, let's fill any that aren't set in with defaults:
335
336 sub read_config {
337         my ($prefix) = @_;
338
339         foreach my $setting (keys %config_bool_settings) {
340                 my $target = $config_bool_settings{$setting}->[0];
341                 $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
342         }
343
344         foreach my $setting (keys %config_path_settings) {
345                 my $target = $config_path_settings{$setting};
346                 if (ref($target) eq "ARRAY") {
347                         unless (@$target) {
348                                 my @values = Git::config_path(@repo, "$prefix.$setting");
349                                 @$target = @values if (@values && defined $values[0]);
350                         }
351                 }
352                 else {
353                         $$target = Git::config_path(@repo, "$prefix.$setting") unless (defined $$target);
354                 }
355         }
356
357         foreach my $setting (keys %config_settings) {
358                 my $target = $config_settings{$setting};
359                 next if $setting eq "to" and defined $no_to;
360                 next if $setting eq "cc" and defined $no_cc;
361                 next if $setting eq "bcc" and defined $no_bcc;
362                 if (ref($target) eq "ARRAY") {
363                         unless (@$target) {
364                                 my @values = Git::config(@repo, "$prefix.$setting");
365                                 @$target = @values if (@values && defined $values[0]);
366                         }
367                 }
368                 else {
369                         $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
370                 }
371         }
372
373         if (!defined $smtp_encryption) {
374                 my $enc = Git::config(@repo, "$prefix.smtpencryption");
375                 if (defined $enc) {
376                         $smtp_encryption = $enc;
377                 } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
378                         $smtp_encryption = 'ssl';
379                 }
380         }
381 }
382
383 # read configuration from [sendemail "$identity"], fall back on [sendemail]
384 $identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
385 read_config("sendemail.$identity") if (defined $identity);
386 read_config("sendemail");
387
388 # fall back on builtin bool defaults
389 foreach my $setting (values %config_bool_settings) {
390         ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
391 }
392
393 # 'default' encryption is none -- this only prevents a warning
394 $smtp_encryption = '' unless (defined $smtp_encryption);
395
396 # Set CC suppressions
397 my(%suppress_cc);
398 if (@suppress_cc) {
399         foreach my $entry (@suppress_cc) {
400                 die "Unknown --suppress-cc field: '$entry'\n"
401                         unless $entry =~ /^(?:all|cccmd|cc|author|self|sob|body|bodycc)$/;
402                 $suppress_cc{$entry} = 1;
403         }
404 }
405
406 if ($suppress_cc{'all'}) {
407         foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
408                 $suppress_cc{$entry} = 1;
409         }
410         delete $suppress_cc{'all'};
411 }
412
413 # If explicit old-style ones are specified, they trump --suppress-cc.
414 $suppress_cc{'self'} = $suppress_from if defined $suppress_from;
415 $suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
416
417 if ($suppress_cc{'body'}) {
418         foreach my $entry (qw (sob bodycc)) {
419                 $suppress_cc{$entry} = 1;
420         }
421         delete $suppress_cc{'body'};
422 }
423
424 # Set confirm's default value
425 my $confirm_unconfigured = !defined $confirm;
426 if ($confirm_unconfigured) {
427         $confirm = scalar %suppress_cc ? 'compose' : 'auto';
428 };
429 die "Unknown --confirm setting: '$confirm'\n"
430         unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
431
432 # Debugging, print out the suppressions.
433 if (0) {
434         print "suppressions:\n";
435         foreach my $entry (keys %suppress_cc) {
436                 printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
437         }
438 }
439
440 my ($repoauthor, $repocommitter);
441 ($repoauthor) = Git::ident_person(@repo, 'author');
442 ($repocommitter) = Git::ident_person(@repo, 'committer');
443
444 # Verify the user input
445
446 foreach my $entry (@initial_to) {
447         die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
448 }
449
450 foreach my $entry (@initial_cc) {
451         die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
452 }
453
454 foreach my $entry (@bcclist) {
455         die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
456 }
457
458 sub parse_address_line {
459         if ($have_mail_address) {
460                 return map { $_->format } Mail::Address->parse($_[0]);
461         } else {
462                 return split_addrs($_[0]);
463         }
464 }
465
466 sub split_addrs {
467         return quotewords('\s*,\s*', 1, @_);
468 }
469
470 my %aliases;
471 my %parse_alias = (
472         # multiline formats can be supported in the future
473         mutt => sub { my $fh = shift; while (<$fh>) {
474                 if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
475                         my ($alias, $addr) = ($1, $2);
476                         $addr =~ s/#.*$//; # mutt allows # comments
477                          # commas delimit multiple addresses
478                         $aliases{$alias} = [ split_addrs($addr) ];
479                 }}},
480         mailrc => sub { my $fh = shift; while (<$fh>) {
481                 if (/^alias\s+(\S+)\s+(.*)$/) {
482                         # spaces delimit multiple addresses
483                         $aliases{$1} = [ quotewords('\s+', 0, $2) ];
484                 }}},
485         pine => sub { my $fh = shift; my $f='\t[^\t]*';
486                 for (my $x = ''; defined($x); $x = $_) {
487                         chomp $x;
488                         $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
489                         $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
490                         $aliases{$1} = [ split_addrs($2) ];
491                 }},
492         elm => sub  { my $fh = shift;
493                       while (<$fh>) {
494                           if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
495                               my ($alias, $addr) = ($1, $2);
496                                $aliases{$alias} = [ split_addrs($addr) ];
497                           }
498                       } },
499
500         gnus => sub { my $fh = shift; while (<$fh>) {
501                 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
502                         $aliases{$1} = [ $2 ];
503                 }}}
504 );
505
506 if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
507         foreach my $file (@alias_files) {
508                 open my $fh, '<', $file or die "opening $file: $!\n";
509                 $parse_alias{$aliasfiletype}->($fh);
510                 close $fh;
511         }
512 }
513
514 ($sender) = expand_aliases($sender) if defined $sender;
515
516 # is_format_patch_arg($f) returns 0 if $f names a patch, or 1 if
517 # $f is a revision list specification to be passed to format-patch.
518 sub is_format_patch_arg {
519         return unless $repo;
520         my $f = shift;
521         try {
522                 $repo->command('rev-parse', '--verify', '--quiet', $f);
523                 if (defined($format_patch)) {
524                         return $format_patch;
525                 }
526                 die(<<EOF);
527 File '$f' exists but it could also be the range of commits
528 to produce patches for.  Please disambiguate by...
529
530     * Saying "./$f" if you mean a file; or
531     * Giving --format-patch option if you mean a range.
532 EOF
533         } catch Git::Error::Command with {
534                 # Not a valid revision.  Treat it as a filename.
535                 return 0;
536         }
537 }
538
539 # Now that all the defaults are set, process the rest of the command line
540 # arguments and collect up the files that need to be processed.
541 my @rev_list_opts;
542 while (defined(my $f = shift @ARGV)) {
543         if ($f eq "--") {
544                 push @rev_list_opts, "--", @ARGV;
545                 @ARGV = ();
546         } elsif (-d $f and !is_format_patch_arg($f)) {
547                 opendir my $dh, $f
548                         or die "Failed to opendir $f: $!";
549
550                 push @files, grep { -f $_ } map { catfile($f, $_) }
551                                 sort readdir $dh;
552                 closedir $dh;
553         } elsif ((-f $f or -p $f) and !is_format_patch_arg($f)) {
554                 push @files, $f;
555         } else {
556                 push @rev_list_opts, $f;
557         }
558 }
559
560 if (@rev_list_opts) {
561         die "Cannot run git format-patch from outside a repository\n"
562                 unless $repo;
563         push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
564 }
565
566 if ($validate) {
567         foreach my $f (@files) {
568                 unless (-p $f) {
569                         my $error = validate_patch($f);
570                         $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
571                 }
572         }
573 }
574
575 if (@files) {
576         unless ($quiet) {
577                 print $_,"\n" for (@files);
578         }
579 } else {
580         print STDERR "\nNo patch files specified!\n\n";
581         usage();
582 }
583
584 sub get_patch_subject {
585         my $fn = shift;
586         open (my $fh, '<', $fn);
587         while (my $line = <$fh>) {
588                 next unless ($line =~ /^Subject: (.*)$/);
589                 close $fh;
590                 return "GIT: $1\n";
591         }
592         close $fh;
593         die "No subject line in $fn ?";
594 }
595
596 if ($compose) {
597         # Note that this does not need to be secure, but we will make a small
598         # effort to have it be unique
599         $compose_filename = ($repo ?
600                 tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
601                 tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
602         open my $c, ">", $compose_filename
603                 or die "Failed to open for writing $compose_filename: $!";
604
605
606         my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
607         my $tpl_subject = $initial_subject || '';
608         my $tpl_reply_to = $initial_reply_to || '';
609
610         print $c <<EOT;
611 From $tpl_sender # This line is ignored.
612 GIT: Lines beginning in "GIT:" will be removed.
613 GIT: Consider including an overall diffstat or table of contents
614 GIT: for the patch you are writing.
615 GIT:
616 GIT: Clear the body content if you don't wish to send a summary.
617 From: $tpl_sender
618 Subject: $tpl_subject
619 In-Reply-To: $tpl_reply_to
620
621 EOT
622         for my $f (@files) {
623                 print $c get_patch_subject($f);
624         }
625         close $c;
626
627         if ($annotate) {
628                 do_edit($compose_filename, @files);
629         } else {
630                 do_edit($compose_filename);
631         }
632
633         open my $c2, ">", $compose_filename . ".final"
634                 or die "Failed to open $compose_filename.final : " . $!;
635
636         open $c, "<", $compose_filename
637                 or die "Failed to open $compose_filename : " . $!;
638
639         my $need_8bit_cte = file_has_nonascii($compose_filename);
640         my $in_body = 0;
641         my $summary_empty = 1;
642         if (!defined $compose_encoding) {
643                 $compose_encoding = "UTF-8";
644         }
645         while(<$c>) {
646                 next if m/^GIT:/;
647                 if ($in_body) {
648                         $summary_empty = 0 unless (/^\n$/);
649                 } elsif (/^\n$/) {
650                         $in_body = 1;
651                         if ($need_8bit_cte) {
652                                 print $c2 "MIME-Version: 1.0\n",
653                                          "Content-Type: text/plain; ",
654                                            "charset=$compose_encoding\n",
655                                          "Content-Transfer-Encoding: 8bit\n";
656                         }
657                 } elsif (/^MIME-Version:/i) {
658                         $need_8bit_cte = 0;
659                 } elsif (/^Subject:\s*(.+)\s*$/i) {
660                         $initial_subject = $1;
661                         my $subject = $initial_subject;
662                         $_ = "Subject: " .
663                                 quote_subject($subject, $compose_encoding) .
664                                 "\n";
665                 } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
666                         $initial_reply_to = $1;
667                         next;
668                 } elsif (/^From:\s*(.+)\s*$/i) {
669                         $sender = $1;
670                         next;
671                 } elsif (/^(?:To|Cc|Bcc):/i) {
672                         print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
673                         next;
674                 }
675                 print $c2 $_;
676         }
677         close $c;
678         close $c2;
679
680         if ($summary_empty) {
681                 print "Summary email is empty, skipping it\n";
682                 $compose = -1;
683         }
684 } elsif ($annotate) {
685         do_edit(@files);
686 }
687
688 sub ask {
689         my ($prompt, %arg) = @_;
690         my $valid_re = $arg{valid_re};
691         my $default = $arg{default};
692         my $confirm_only = $arg{confirm_only};
693         my $resp;
694         my $i = 0;
695         return defined $default ? $default : undef
696                 unless defined $term->IN and defined fileno($term->IN) and
697                        defined $term->OUT and defined fileno($term->OUT);
698         while ($i++ < 10) {
699                 $resp = $term->readline($prompt);
700                 if (!defined $resp) { # EOF
701                         print "\n";
702                         return defined $default ? $default : undef;
703                 }
704                 if ($resp eq '' and defined $default) {
705                         return $default;
706                 }
707                 if (!defined $valid_re or $resp =~ /$valid_re/) {
708                         return $resp;
709                 }
710                 if ($confirm_only) {
711                         my $yesno = $term->readline("Are you sure you want to use <$resp> [y/N]? ");
712                         if (defined $yesno && $yesno =~ /y/i) {
713                                 return $resp;
714                         }
715                 }
716         }
717         return;
718 }
719
720 my %broken_encoding;
721
722 sub file_declares_8bit_cte {
723         my $fn = shift;
724         open (my $fh, '<', $fn);
725         while (my $line = <$fh>) {
726                 last if ($line =~ /^$/);
727                 return 1 if ($line =~ /^Content-Transfer-Encoding: .*8bit.*$/);
728         }
729         close $fh;
730         return 0;
731 }
732
733 foreach my $f (@files) {
734         next unless (body_or_subject_has_nonascii($f)
735                      && !file_declares_8bit_cte($f));
736         $broken_encoding{$f} = 1;
737 }
738
739 if (!defined $auto_8bit_encoding && scalar %broken_encoding) {
740         print "The following files are 8bit, but do not declare " .
741                 "a Content-Transfer-Encoding.\n";
742         foreach my $f (sort keys %broken_encoding) {
743                 print "    $f\n";
744         }
745         $auto_8bit_encoding = ask("Which 8bit encoding should I declare [UTF-8]? ",
746                                   default => "UTF-8");
747 }
748
749 if (!$force) {
750         for my $f (@files) {
751                 if (get_patch_subject($f) =~ /\Q*** SUBJECT HERE ***\E/) {
752                         die "Refusing to send because the patch\n\t$f\n"
753                                 . "has the template subject '*** SUBJECT HERE ***'. "
754                                 . "Pass --force if you really want to send.\n";
755                 }
756         }
757 }
758
759 if (!defined $sender) {
760         $sender = $repoauthor || $repocommitter || '';
761 }
762
763 # $sender could be an already sanitized address
764 # (e.g. sendemail.from could be manually sanitized by user).
765 # But it's a no-op to run sanitize_address on an already sanitized address.
766 $sender = sanitize_address($sender);
767
768 my $prompting = 0;
769 if (!@initial_to && !defined $to_cmd) {
770         my $to = ask("Who should the emails be sent to (if any)? ",
771                      default => "",
772                      valid_re => qr/\@.*\./, confirm_only => 1);
773         push @initial_to, parse_address_line($to) if defined $to; # sanitized/validated later
774         $prompting++;
775 }
776
777 sub expand_aliases {
778         return map { expand_one_alias($_) } @_;
779 }
780
781 my %EXPANDED_ALIASES;
782 sub expand_one_alias {
783         my $alias = shift;
784         if ($EXPANDED_ALIASES{$alias}) {
785                 die "fatal: alias '$alias' expands to itself\n";
786         }
787         local $EXPANDED_ALIASES{$alias} = 1;
788         return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
789 }
790
791 @initial_to = expand_aliases(@initial_to);
792 @initial_to = validate_address_list(sanitize_address_list(@initial_to));
793 @initial_cc = expand_aliases(@initial_cc);
794 @initial_cc = validate_address_list(sanitize_address_list(@initial_cc));
795 @bcclist = expand_aliases(@bcclist);
796 @bcclist = validate_address_list(sanitize_address_list(@bcclist));
797
798 if ($thread && !defined $initial_reply_to && $prompting) {
799         $initial_reply_to = ask(
800                 "Message-ID to be used as In-Reply-To for the first email (if any)? ",
801                 default => "",
802                 valid_re => qr/\@.*\./, confirm_only => 1);
803 }
804 if (defined $initial_reply_to) {
805         $initial_reply_to =~ s/^\s*<?//;
806         $initial_reply_to =~ s/>?\s*$//;
807         $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
808 }
809
810 if (!defined $smtp_server) {
811         foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
812                 if (-x $_) {
813                         $smtp_server = $_;
814                         last;
815                 }
816         }
817         $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
818 }
819
820 if ($compose && $compose > 0) {
821         @files = ($compose_filename . ".final", @files);
822 }
823
824 # Variables we set as part of the loop over files
825 our ($message_id, %mail, $subject, $reply_to, $references, $message,
826         $needs_confirm, $message_num, $ask_default);
827
828 sub extract_valid_address {
829         my $address = shift;
830         my $local_part_regexp = qr/[^<>"\s@]+/;
831         my $domain_regexp = qr/[^.<>"\s@]+(?:\.[^.<>"\s@]+)+/;
832
833         # check for a local address:
834         return $address if ($address =~ /^($local_part_regexp)$/);
835
836         $address =~ s/^\s*<(.*)>\s*$/$1/;
837         if ($have_email_valid) {
838                 return scalar Email::Valid->address($address);
839         }
840
841         # less robust/correct than the monster regexp in Email::Valid,
842         # but still does a 99% job, and one less dependency
843         return $1 if $address =~ /($local_part_regexp\@$domain_regexp)/;
844         return;
845 }
846
847 sub extract_valid_address_or_die {
848         my $address = shift;
849         $address = extract_valid_address($address);
850         die "error: unable to extract a valid address from: $address\n"
851                 if !$address;
852         return $address;
853 }
854
855 sub validate_address {
856         my $address = shift;
857         while (!extract_valid_address($address)) {
858                 print STDERR "error: unable to extract a valid address from: $address\n";
859                 $_ = ask("What to do with this address? ([q]uit|[d]rop|[e]dit): ",
860                         valid_re => qr/^(?:quit|q|drop|d|edit|e)/i,
861                         default => 'q');
862                 if (/^d/i) {
863                         return undef;
864                 } elsif (/^q/i) {
865                         cleanup_compose_files();
866                         exit(0);
867                 }
868                 $address = ask("Who should the email be sent to (if any)? ",
869                         default => "",
870                         valid_re => qr/\@.*\./, confirm_only => 1);
871         }
872         return $address;
873 }
874
875 sub validate_address_list {
876         return (grep { defined $_ }
877                 map { validate_address($_) } @_);
878 }
879
880 # Usually don't need to change anything below here.
881
882 # we make a "fake" message id by taking the current number
883 # of seconds since the beginning of Unix time and tacking on
884 # a random number to the end, in case we are called quicker than
885 # 1 second since the last time we were called.
886
887 # We'll setup a template for the message id, using the "from" address:
888
889 my ($message_id_stamp, $message_id_serial);
890 sub make_message_id {
891         my $uniq;
892         if (!defined $message_id_stamp) {
893                 $message_id_stamp = sprintf("%s-%s", time, $$);
894                 $message_id_serial = 0;
895         }
896         $message_id_serial++;
897         $uniq = "$message_id_stamp-$message_id_serial";
898
899         my $du_part;
900         for ($sender, $repocommitter, $repoauthor) {
901                 $du_part = extract_valid_address(sanitize_address($_));
902                 last if (defined $du_part and $du_part ne '');
903         }
904         if (not defined $du_part or $du_part eq '') {
905                 require Sys::Hostname;
906                 $du_part = 'user@' . Sys::Hostname::hostname();
907         }
908         my $message_id_template = "<%s-git-send-email-%s>";
909         $message_id = sprintf($message_id_template, $uniq, $du_part);
910         #print "new message id = $message_id\n"; # Was useful for debugging
911 }
912
913
914
915 $time = time - scalar $#files;
916
917 sub unquote_rfc2047 {
918         local ($_) = @_;
919         my $encoding;
920         s{=\?([^?]+)\?q\?(.*?)\?=}{
921                 $encoding = $1;
922                 my $e = $2;
923                 $e =~ s/_/ /g;
924                 $e =~ s/=([0-9A-F]{2})/chr(hex($1))/eg;
925                 $e;
926         }eg;
927         return wantarray ? ($_, $encoding) : $_;
928 }
929
930 sub quote_rfc2047 {
931         local $_ = shift;
932         my $encoding = shift || 'UTF-8';
933         s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
934         s/(.*)/=\?$encoding\?q\?$1\?=/;
935         return $_;
936 }
937
938 sub is_rfc2047_quoted {
939         my $s = shift;
940         my $token = qr/[^][()<>@,;:"\/?.= \000-\037\177-\377]+/;
941         my $encoded_text = qr/[!->@-~]+/;
942         length($s) <= 75 &&
943         $s =~ m/^(?:"[[:ascii:]]*"|=\?$token\?$token\?$encoded_text\?=)$/o;
944 }
945
946 sub subject_needs_rfc2047_quoting {
947         my $s = shift;
948
949         return ($s =~ /[^[:ascii:]]/) || ($s =~ /=\?/);
950 }
951
952 sub quote_subject {
953         local $subject = shift;
954         my $encoding = shift || 'UTF-8';
955
956         if (subject_needs_rfc2047_quoting($subject)) {
957                 return quote_rfc2047($subject, $encoding);
958         }
959         return $subject;
960 }
961
962 # use the simplest quoting being able to handle the recipient
963 sub sanitize_address {
964         my ($recipient) = @_;
965
966         # remove garbage after email address
967         $recipient =~ s/(.*>).*$/$1/;
968
969         my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
970
971         if (not $recipient_name) {
972                 return $recipient;
973         }
974
975         # if recipient_name is already quoted, do nothing
976         if (is_rfc2047_quoted($recipient_name)) {
977                 return $recipient;
978         }
979
980         # rfc2047 is needed if a non-ascii char is included
981         if ($recipient_name =~ /[^[:ascii:]]/) {
982                 $recipient_name =~ s/^"(.*)"$/$1/;
983                 $recipient_name = quote_rfc2047($recipient_name);
984         }
985
986         # double quotes are needed if specials or CTLs are included
987         elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
988                 $recipient_name =~ s/(["\\\r])/\\$1/g;
989                 $recipient_name = qq["$recipient_name"];
990         }
991
992         return "$recipient_name $recipient_addr";
993
994 }
995
996 sub sanitize_address_list {
997         return (map { sanitize_address($_) } @_);
998 }
999
1000 # Returns the local Fully Qualified Domain Name (FQDN) if available.
1001 #
1002 # Tightly configured MTAa require that a caller sends a real DNS
1003 # domain name that corresponds the IP address in the HELO/EHLO
1004 # handshake. This is used to verify the connection and prevent
1005 # spammers from trying to hide their identity. If the DNS and IP don't
1006 # match, the receiveing MTA may deny the connection.
1007 #
1008 # Here is a deny example of Net::SMTP with the default "localhost.localdomain"
1009 #
1010 # Net::SMTP=GLOB(0x267ec28)>>> EHLO localhost.localdomain
1011 # Net::SMTP=GLOB(0x267ec28)<<< 550 EHLO argument does not match calling host
1012 #
1013 # This maildomain*() code is based on ideas in Perl library Test::Reporter
1014 # /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
1015
1016 sub valid_fqdn {
1017         my $domain = shift;
1018         return defined $domain && !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./;
1019 }
1020
1021 sub maildomain_net {
1022         my $maildomain;
1023
1024         if (eval { require Net::Domain; 1 }) {
1025                 my $domain = Net::Domain::domainname();
1026                 $maildomain = $domain if valid_fqdn($domain);
1027         }
1028
1029         return $maildomain;
1030 }
1031
1032 sub maildomain_mta {
1033         my $maildomain;
1034
1035         if (eval { require Net::SMTP; 1 }) {
1036                 for my $host (qw(mailhost localhost)) {
1037                         my $smtp = Net::SMTP->new($host);
1038                         if (defined $smtp) {
1039                                 my $domain = $smtp->domain;
1040                                 $smtp->quit;
1041
1042                                 $maildomain = $domain if valid_fqdn($domain);
1043
1044                                 last if $maildomain;
1045                         }
1046                 }
1047         }
1048
1049         return $maildomain;
1050 }
1051
1052 sub maildomain {
1053         return maildomain_net() || maildomain_mta() || 'localhost.localdomain';
1054 }
1055
1056 sub smtp_host_string {
1057         if (defined $smtp_server_port) {
1058                 return "$smtp_server:$smtp_server_port";
1059         } else {
1060                 return $smtp_server;
1061         }
1062 }
1063
1064 # Returns 1 if authentication succeeded or was not necessary
1065 # (smtp_user was not specified), and 0 otherwise.
1066
1067 sub smtp_auth_maybe {
1068         if (!defined $smtp_authuser || $auth) {
1069                 return 1;
1070         }
1071
1072         # Workaround AUTH PLAIN/LOGIN interaction defect
1073         # with Authen::SASL::Cyrus
1074         eval {
1075                 require Authen::SASL;
1076                 Authen::SASL->import(qw(Perl));
1077         };
1078
1079         # TODO: Authentication may fail not because credentials were
1080         # invalid but due to other reasons, in which we should not
1081         # reject credentials.
1082         $auth = Git::credential({
1083                 'protocol' => 'smtp',
1084                 'host' => smtp_host_string(),
1085                 'username' => $smtp_authuser,
1086                 # if there's no password, "git credential fill" will
1087                 # give us one, otherwise it'll just pass this one.
1088                 'password' => $smtp_authpass
1089         }, sub {
1090                 my $cred = shift;
1091                 return !!$smtp->auth($cred->{'username'}, $cred->{'password'});
1092         });
1093
1094         return $auth;
1095 }
1096
1097 # Returns 1 if the message was sent, and 0 otherwise.
1098 # In actuality, the whole program dies when there
1099 # is an error sending a message.
1100
1101 sub send_message {
1102         my @recipients = unique_email_list(@to);
1103         @cc = (grep { my $cc = extract_valid_address_or_die($_);
1104                       not grep { $cc eq $_ || $_ =~ /<\Q${cc}\E>$/ } @recipients
1105                     }
1106                @cc);
1107         my $to = join (",\n\t", @recipients);
1108         @recipients = unique_email_list(@recipients,@cc,@bcclist);
1109         @recipients = (map { extract_valid_address_or_die($_) } @recipients);
1110         my $date = format_2822_time($time++);
1111         my $gitversion = '@@GIT_VERSION@@';
1112         if ($gitversion =~ m/..GIT_VERSION../) {
1113             $gitversion = Git::version();
1114         }
1115
1116         my $cc = join(",\n\t", unique_email_list(@cc));
1117         my $ccline = "";
1118         if ($cc ne '') {
1119                 $ccline = "\nCc: $cc";
1120         }
1121         make_message_id() unless defined($message_id);
1122
1123         my $header = "From: $sender
1124 To: $to${ccline}
1125 Subject: $subject
1126 Date: $date
1127 Message-Id: $message_id
1128 X-Mailer: git-send-email $gitversion
1129 ";
1130         if ($reply_to) {
1131
1132                 $header .= "In-Reply-To: $reply_to\n";
1133                 $header .= "References: $references\n";
1134         }
1135         if (@xh) {
1136                 $header .= join("\n", @xh) . "\n";
1137         }
1138
1139         my @sendmail_parameters = ('-i', @recipients);
1140         my $raw_from = $sender;
1141         if (defined $envelope_sender && $envelope_sender ne "auto") {
1142                 $raw_from = $envelope_sender;
1143         }
1144         $raw_from = extract_valid_address($raw_from);
1145         unshift (@sendmail_parameters,
1146                         '-f', $raw_from) if(defined $envelope_sender);
1147
1148         if ($needs_confirm && !$dry_run) {
1149                 print "\n$header\n";
1150                 if ($needs_confirm eq "inform") {
1151                         $confirm_unconfigured = 0; # squelch this message for the rest of this run
1152                         $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
1153                         print "    The Cc list above has been expanded by additional\n";
1154                         print "    addresses found in the patch commit message. By default\n";
1155                         print "    send-email prompts before sending whenever this occurs.\n";
1156                         print "    This behavior is controlled by the sendemail.confirm\n";
1157                         print "    configuration setting.\n";
1158                         print "\n";
1159                         print "    For additional information, run 'git send-email --help'.\n";
1160                         print "    To retain the current behavior, but squelch this message,\n";
1161                         print "    run 'git config --global sendemail.confirm auto'.\n\n";
1162                 }
1163                 $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ",
1164                          valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
1165                          default => $ask_default);
1166                 die "Send this email reply required" unless defined $_;
1167                 if (/^n/i) {
1168                         return 0;
1169                 } elsif (/^q/i) {
1170                         cleanup_compose_files();
1171                         exit(0);
1172                 } elsif (/^a/i) {
1173                         $confirm = 'never';
1174                 }
1175         }
1176
1177         unshift (@sendmail_parameters, @smtp_server_options);
1178
1179         if ($dry_run) {
1180                 # We don't want to send the email.
1181         } elsif ($smtp_server =~ m#^/#) {
1182                 my $pid = open my $sm, '|-';
1183                 defined $pid or die $!;
1184                 if (!$pid) {
1185                         exec($smtp_server, @sendmail_parameters) or die $!;
1186                 }
1187                 print $sm "$header\n$message";
1188                 close $sm or die $!;
1189         } else {
1190
1191                 if (!defined $smtp_server) {
1192                         die "The required SMTP server is not properly defined."
1193                 }
1194
1195                 if ($smtp_encryption eq 'ssl') {
1196                         $smtp_server_port ||= 465; # ssmtp
1197                         require Net::SMTP::SSL;
1198                         $smtp_domain ||= maildomain();
1199                         $smtp ||= Net::SMTP::SSL->new($smtp_server,
1200                                                       Hello => $smtp_domain,
1201                                                       Port => $smtp_server_port);
1202                 }
1203                 else {
1204                         require Net::SMTP;
1205                         $smtp_domain ||= maildomain();
1206                         $smtp ||= Net::SMTP->new(smtp_host_string(),
1207                                                  Hello => $smtp_domain,
1208                                                  Debug => $debug_net_smtp);
1209                         if ($smtp_encryption eq 'tls' && $smtp) {
1210                                 require Net::SMTP::SSL;
1211                                 $smtp->command('STARTTLS');
1212                                 $smtp->response();
1213                                 if ($smtp->code == 220) {
1214                                         $smtp = Net::SMTP::SSL->start_SSL($smtp)
1215                                                 or die "STARTTLS failed! ".$smtp->message;
1216                                         $smtp_encryption = '';
1217                                         # Send EHLO again to receive fresh
1218                                         # supported commands
1219                                         $smtp->hello($smtp_domain);
1220                                 } else {
1221                                         die "Server does not support STARTTLS! ".$smtp->message;
1222                                 }
1223                         }
1224                 }
1225
1226                 if (!$smtp) {
1227                         die "Unable to initialize SMTP properly. Check config and use --smtp-debug. ",
1228                             "VALUES: server=$smtp_server ",
1229                             "encryption=$smtp_encryption ",
1230                             "hello=$smtp_domain",
1231                             defined $smtp_server_port ? " port=$smtp_server_port" : "";
1232                 }
1233
1234                 smtp_auth_maybe or die $smtp->message;
1235
1236                 $smtp->mail( $raw_from ) or die $smtp->message;
1237                 $smtp->to( @recipients ) or die $smtp->message;
1238                 $smtp->data or die $smtp->message;
1239                 $smtp->datasend("$header\n$message") or die $smtp->message;
1240                 $smtp->dataend() or die $smtp->message;
1241                 $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message;
1242         }
1243         if ($quiet) {
1244                 printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
1245         } else {
1246                 print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
1247                 if ($smtp_server !~ m#^/#) {
1248                         print "Server: $smtp_server\n";
1249                         print "MAIL FROM:<$raw_from>\n";
1250                         foreach my $entry (@recipients) {
1251                             print "RCPT TO:<$entry>\n";
1252                         }
1253                 } else {
1254                         print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
1255                 }
1256                 print $header, "\n";
1257                 if ($smtp) {
1258                         print "Result: ", $smtp->code, ' ',
1259                                 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
1260                 } else {
1261                         print "Result: OK\n";
1262                 }
1263         }
1264
1265         return 1;
1266 }
1267
1268 $reply_to = $initial_reply_to;
1269 $references = $initial_reply_to || '';
1270 $subject = $initial_subject;
1271 $message_num = 0;
1272
1273 foreach my $t (@files) {
1274         open my $fh, "<", $t or die "can't open file $t";
1275
1276         my $author = undef;
1277         my $sauthor = undef;
1278         my $author_encoding;
1279         my $has_content_type;
1280         my $body_encoding;
1281         @to = ();
1282         @cc = ();
1283         @xh = ();
1284         my $input_format = undef;
1285         my @header = ();
1286         $message = "";
1287         $message_num++;
1288         # First unfold multiline header fields
1289         while(<$fh>) {
1290                 last if /^\s*$/;
1291                 if (/^\s+\S/ and @header) {
1292                         chomp($header[$#header]);
1293                         s/^\s+/ /;
1294                         $header[$#header] .= $_;
1295             } else {
1296                         push(@header, $_);
1297                 }
1298         }
1299         # Now parse the header
1300         foreach(@header) {
1301                 if (/^From /) {
1302                         $input_format = 'mbox';
1303                         next;
1304                 }
1305                 chomp;
1306                 if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1307                         $input_format = 'mbox';
1308                 }
1309
1310                 if (defined $input_format && $input_format eq 'mbox') {
1311                         if (/^Subject:\s+(.*)$/i) {
1312                                 $subject = $1;
1313                         }
1314                         elsif (/^From:\s+(.*)$/i) {
1315                                 ($author, $author_encoding) = unquote_rfc2047($1);
1316                                 $sauthor = sanitize_address($author);
1317                                 next if $suppress_cc{'author'};
1318                                 next if $suppress_cc{'self'} and $sauthor eq $sender;
1319                                 printf("(mbox) Adding cc: %s from line '%s'\n",
1320                                         $1, $_) unless $quiet;
1321                                 push @cc, $1;
1322                         }
1323                         elsif (/^To:\s+(.*)$/i) {
1324                                 foreach my $addr (parse_address_line($1)) {
1325                                         printf("(mbox) Adding to: %s from line '%s'\n",
1326                                                 $addr, $_) unless $quiet;
1327                                         push @to, $addr;
1328                                 }
1329                         }
1330                         elsif (/^Cc:\s+(.*)$/i) {
1331                                 foreach my $addr (parse_address_line($1)) {
1332                                         my $qaddr = unquote_rfc2047($addr);
1333                                         my $saddr = sanitize_address($qaddr);
1334                                         if ($saddr eq $sender) {
1335                                                 next if ($suppress_cc{'self'});
1336                                         } else {
1337                                                 next if ($suppress_cc{'cc'});
1338                                         }
1339                                         printf("(mbox) Adding cc: %s from line '%s'\n",
1340                                                 $addr, $_) unless $quiet;
1341                                         push @cc, $addr;
1342                                 }
1343                         }
1344                         elsif (/^Content-type:/i) {
1345                                 $has_content_type = 1;
1346                                 if (/charset="?([^ "]+)/) {
1347                                         $body_encoding = $1;
1348                                 }
1349                                 push @xh, $_;
1350                         }
1351                         elsif (/^Message-Id: (.*)/i) {
1352                                 $message_id = $1;
1353                         }
1354                         elsif (!/^Date:\s/i && /^[-A-Za-z]+:\s+\S/) {
1355                                 push @xh, $_;
1356                         }
1357
1358                 } else {
1359                         # In the traditional
1360                         # "send lots of email" format,
1361                         # line 1 = cc
1362                         # line 2 = subject
1363                         # So let's support that, too.
1364                         $input_format = 'lots';
1365                         if (@cc == 0 && !$suppress_cc{'cc'}) {
1366                                 printf("(non-mbox) Adding cc: %s from line '%s'\n",
1367                                         $_, $_) unless $quiet;
1368                                 push @cc, $_;
1369                         } elsif (!defined $subject) {
1370                                 $subject = $_;
1371                         }
1372                 }
1373         }
1374         # Now parse the message body
1375         while(<$fh>) {
1376                 $message .=  $_;
1377                 if (/^(Signed-off-by|Cc): (.*)$/i) {
1378                         chomp;
1379                         my ($what, $c) = ($1, $2);
1380                         chomp $c;
1381                         my $sc = sanitize_address($c);
1382                         if ($sc eq $sender) {
1383                                 next if ($suppress_cc{'self'});
1384                         } else {
1385                                 next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1386                                 next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1387                         }
1388                         push @cc, $c;
1389                         printf("(body) Adding cc: %s from line '%s'\n",
1390                                 $c, $_) unless $quiet;
1391                 }
1392         }
1393         close $fh;
1394
1395         push @to, recipients_cmd("to-cmd", "to", $to_cmd, $t)
1396                 if defined $to_cmd;
1397         push @cc, recipients_cmd("cc-cmd", "cc", $cc_cmd, $t)
1398                 if defined $cc_cmd && !$suppress_cc{'cccmd'};
1399
1400         if ($broken_encoding{$t} && !$has_content_type) {
1401                 $has_content_type = 1;
1402                 push @xh, "MIME-Version: 1.0",
1403                         "Content-Type: text/plain; charset=$auto_8bit_encoding",
1404                         "Content-Transfer-Encoding: 8bit";
1405                 $body_encoding = $auto_8bit_encoding;
1406         }
1407
1408         if ($broken_encoding{$t} && !is_rfc2047_quoted($subject)) {
1409                 $subject = quote_subject($subject, $auto_8bit_encoding);
1410         }
1411
1412         if (defined $sauthor and $sauthor ne $sender) {
1413                 $message = "From: $author\n\n$message";
1414                 if (defined $author_encoding) {
1415                         if ($has_content_type) {
1416                                 if ($body_encoding eq $author_encoding) {
1417                                         # ok, we already have the right encoding
1418                                 }
1419                                 else {
1420                                         # uh oh, we should re-encode
1421                                 }
1422                         }
1423                         else {
1424                                 $has_content_type = 1;
1425                                 push @xh,
1426                                   'MIME-Version: 1.0',
1427                                   "Content-Type: text/plain; charset=$author_encoding",
1428                                   'Content-Transfer-Encoding: 8bit';
1429                         }
1430                 }
1431         }
1432
1433         $needs_confirm = (
1434                 $confirm eq "always" or
1435                 ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1436                 ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1437         $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1438
1439         @to = validate_address_list(sanitize_address_list(@to));
1440         @cc = validate_address_list(sanitize_address_list(@cc));
1441
1442         @to = (@initial_to, @to);
1443         @cc = (@initial_cc, @cc);
1444
1445         my $message_was_sent = send_message();
1446
1447         # set up for the next message
1448         if ($thread && $message_was_sent &&
1449                 (chain_reply_to() || !defined $reply_to || length($reply_to) == 0 ||
1450                 $message_num == 1)) {
1451                 $reply_to = $message_id;
1452                 if (length $references > 0) {
1453                         $references .= "\n $message_id";
1454                 } else {
1455                         $references = "$message_id";
1456                 }
1457         }
1458         $message_id = undef;
1459 }
1460
1461 # Execute a command (e.g. $to_cmd) to get a list of email addresses
1462 # and return a results array
1463 sub recipients_cmd {
1464         my ($prefix, $what, $cmd, $file) = @_;
1465
1466         my @addresses = ();
1467         open my $fh, "-|", "$cmd \Q$file\E"
1468             or die "($prefix) Could not execute '$cmd'";
1469         while (my $address = <$fh>) {
1470                 $address =~ s/^\s*//g;
1471                 $address =~ s/\s*$//g;
1472                 $address = sanitize_address($address);
1473                 next if ($address eq $sender and $suppress_cc{'self'});
1474                 push @addresses, $address;
1475                 printf("($prefix) Adding %s: %s from: '%s'\n",
1476                        $what, $address, $cmd) unless $quiet;
1477                 }
1478         close $fh
1479             or die "($prefix) failed to close pipe to '$cmd'";
1480         return @addresses;
1481 }
1482
1483 cleanup_compose_files();
1484
1485 sub cleanup_compose_files {
1486         unlink($compose_filename, $compose_filename . ".final") if $compose;
1487 }
1488
1489 $smtp->quit if $smtp;
1490
1491 sub unique_email_list {
1492         my %seen;
1493         my @emails;
1494
1495         foreach my $entry (@_) {
1496                 my $clean = extract_valid_address_or_die($entry);
1497                 $seen{$clean} ||= 0;
1498                 next if $seen{$clean}++;
1499                 push @emails, $entry;
1500         }
1501         return @emails;
1502 }
1503
1504 sub validate_patch {
1505         my $fn = shift;
1506         open(my $fh, '<', $fn)
1507                 or die "unable to open $fn: $!\n";
1508         while (my $line = <$fh>) {
1509                 if (length($line) > 998) {
1510                         return "$.: patch contains a line longer than 998 characters";
1511                 }
1512         }
1513         return;
1514 }
1515
1516 sub file_has_nonascii {
1517         my $fn = shift;
1518         open(my $fh, '<', $fn)
1519                 or die "unable to open $fn: $!\n";
1520         while (my $line = <$fh>) {
1521                 return 1 if $line =~ /[^[:ascii:]]/;
1522         }
1523         return 0;
1524 }
1525
1526 sub body_or_subject_has_nonascii {
1527         my $fn = shift;
1528         open(my $fh, '<', $fn)
1529                 or die "unable to open $fn: $!\n";
1530         while (my $line = <$fh>) {
1531                 last if $line =~ /^$/;
1532                 return 1 if $line =~ /^Subject.*[^[:ascii:]]/;
1533         }
1534         while (my $line = <$fh>) {
1535                 return 1 if $line =~ /[^[:ascii:]]/;
1536         }
1537         return 0;
1538 }