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     --annotate                     * Review each patch that will be sent in an editor.
  58     --compose                      * Open an editor for introduction.
  59     --8bit-encoding         <str>  * Encoding to assume 8bit mails if undeclared
  60
  61   Sending:
  62     --envelope-sender       <str>  * Email envelope sender.
  63     --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
  64                                      is optional. Default 'localhost'.
  65     --smtp-server-option    <str>  * Outgoing SMTP server option to use.
  66     --smtp-server-port      <int>  * Outgoing SMTP server port.
  67     --smtp-user             <str>  * Username for SMTP-AUTH.
  68     --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
  69     --smtp-encryption       <str>  * tls or ssl; anything else disables.
  70     --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
  71     --smtp-domain           <str>  * The domain name sent to HELO/EHLO handshake
  72     --smtp-debug            <0|1>  * Disable, enable Net::SMTP debug.
  73
  74   Automating:
  75     --identity              <str>  * Use the sendemail.<id> options.
  76     --to-cmd                <str>  * Email To: via `<str> \$patch_path`
  77     --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
  78     --suppress-cc           <str>  * author, self, sob, cc, cccmd, body, bodycc, all.
  79     --[no-]signed-off-by-cc        * Send to Signed-off-by: addresses. Default on.
  80     --[no-]suppress-from           * Send to self. Default off.
  81     --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default off.
  82     --[no-]thread                  * Use In-Reply-To: field. Default on.
  83
  84   Administering:
  85     --confirm               <str>  * Confirm recipients before sending;
  86                                      auto, cc, compose, always, or never.
  87     --quiet                        * Output one line of info per email.
  88     --dry-run                      * Don't actually send the emails.
  89     --[no-]validate                * Perform patch sanity checks. Default on.
  90     --[no-]format-patch            * understand any non optional arguments as
  91                                      `git format-patch` ones.
  92     --force                        * Send even if safety checks would prevent it.
  93
  94 EOT
  95         exit(1);
  96 }
  97
  98 # most mail servers generate the Date: header, but not all...
  99 sub format_2822_time {
 100         my ($time) = @_;
 101         my @localtm = localtime($time);
 102         my @gmttm = gmtime($time);
 103         my $localmin = $localtm[1] + $localtm[2] * 60;
 104         my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
 105         if ($localtm[0] != $gmttm[0]) {
 106                 die "local zone differs from GMT by a non-minute interval\n";
 107         }
 108         if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
 109                 $localmin += 1440;
 110         } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 111                 $localmin -= 1440;
 112         } elsif ($gmttm[6] != $localtm[6]) {
 113                 die "local time offset greater than or equal to 24 hours\n";
 114         }
 115         my $offset = $localmin - $gmtmin;
 116         my $offhour = $offset / 60;
 117         my $offmin = abs($offset % 60);
 118         if (abs($offhour) >= 24) {
 119                 die ("local time offset greater than or equal to 24 hours\n");
 120         }
 121
 122         return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 123                        qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 124                        $localtm[3],
 125                        qw(Jan Feb Mar Apr May Jun
 126                           Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 127                        $localtm[5]+1900,
 128                        $localtm[2],
 129                        $localtm[1],
 130                        $localtm[0],
 131                        ($offset >= 0) ? '+' : '-',
 132                        abs($offhour),
 133                        $offmin,
 134                        );
 135 }
 136
 137 my $have_email_valid = eval { require Email::Valid; 1 };
 138 my $have_mail_address = eval { require Mail::Address; 1 };
 139 my $smtp;
 140 my $auth;
 141
 142 # Variables we fill in automatically, or via prompting:
 143 my (@to,$no_to,@initial_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
 144         $initial_reply_to,$initial_subject,@files,
 145         $author,$sender,$smtp_authpass,$annotate,$compose,$time);
 146
 147 my $envelope_sender;
 148
 149 # Example reply to:
 150 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 151
 152 my $repo = eval { Git->repository() };
 153 my @repo = $repo ? ($repo) : ();
 154 my $term = eval {
 155         $ENV{"GIT_SEND_EMAIL_NOTTY"}
 156                 ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
 157                 : new Term::ReadLine 'git-send-email';
 158 };
 159 if ($@) {
 160         $term = new FakeTerm "$@: going non-interactive";
 161 }
 162
 163 # Behavior modification variables
 164 my ($quiet, $dry_run) = (0, 0);
 165 my $format_patch;
 166 my $compose_filename;
 167 my $force = 0;
 168
 169 # Handle interactive edition of files.
 170 my $multiedit;
 171 my $editor;
 172
 173 sub do_edit {
 174         if (!defined($editor)) {
 175                 $editor = Git::command_oneline('var', 'GIT_EDITOR');
 176         }
 177         if (defined($multiedit) && !$multiedit) {
 178                 map {
 179                         system('sh', '-c', $editor.' "$@"', $editor, $_);
 180                         if (($? & 127) || ($? >> 8)) {
 181                                 die("the editor exited uncleanly, aborting everything");
 182                         }
 183                 } @_;
 184         } else {
 185                 system('sh', '-c', $editor.' "$@"', $editor, @_);
 186                 if (($? & 127) || ($? >> 8)) {
 187                         die("the editor exited uncleanly, aborting everything");
 188                 }
 189         }
 190 }
 191
 192 # Variables with corresponding config settings
 193 my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc);
 194 my ($to_cmd, $cc_cmd);
 195 my ($smtp_server, $smtp_server_port, @smtp_server_options);
 196 my ($smtp_authuser, $smtp_encryption);
 197 my ($identity, $aliasfiletype, @alias_files, $smtp_domain);
 198 my ($validate, $confirm);
 199 my (@suppress_cc);
 200 my ($auto_8bit_encoding);
 201
 202 my ($debug_net_smtp) = 0;               # Net::SMTP, see send_message()
 203
 204 my $not_set_by_user = "true but not set by the user";
 205
 206 my %config_bool_settings = (
 207     "thread" => [\$thread, 1],
 208     "chainreplyto" => [\$chain_reply_to, $not_set_by_user],
 209     "suppressfrom" => [\$suppress_from, undef],
 210     "signedoffbycc" => [\$signed_off_by_cc, undef],
 211     "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 212     "validate" => [\$validate, 1],
 213 );
 214
 215 my %config_settings = (
 216     "smtpserver" => \$smtp_server,
 217     "smtpserverport" => \$smtp_server_port,
 218     "smtpserveroption" => \@smtp_server_options,
 219     "smtpuser" => \$smtp_authuser,
 220     "smtppass" => \$smtp_authpass,
 221     "smtpdomain" => \$smtp_domain,
 222     "to" => \@initial_to,
 223     "tocmd" => \$to_cmd,
 224     "cc" => \@initial_cc,
 225     "cccmd" => \$cc_cmd,
 226     "aliasfiletype" => \$aliasfiletype,
 227     "bcc" => \@bcclist,
 228     "aliasesfile" => \@alias_files,
 229     "suppresscc" => \@suppress_cc,
 230     "envelopesender" => \$envelope_sender,
 231     "multiedit" => \$multiedit,
 232     "confirm"   => \$confirm,
 233     "from" => \$sender,
 234     "assume8bitencoding" => \$auto_8bit_encoding,
 235 );
 236
 237 # Help users prepare for 1.7.0
 238 sub chain_reply_to {
 239         if (defined $chain_reply_to &&
 240             $chain_reply_to eq $not_set_by_user) {
 241                 print STDERR
 242                     "In git 1.7.0, the default has changed to --no-chain-reply-to\n" .
 243                     "Set sendemail.chainreplyto configuration variable to true if\n" .
 244                     "you want to keep --chain-reply-to as your default.\n";
 245                 $chain_reply_to = 0;
 246         }
 247         return $chain_reply_to;
 248 }
 249
 250 # Handle Uncouth Termination
 251 sub signal_handler {
 252
 253         # Make text normal
 254         print color("reset"), "\n";
 255
 256         # SMTP password masked
 257         system "stty echo";
 258
 259         # tmp files from --compose
 260         if (defined $compose_filename) {
 261                 if (-e $compose_filename) {
 262                         print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 263                 }
 264                 if (-e ($compose_filename . ".final")) {
 265                         print "'$compose_filename.final' contains the composed email.\n"
 266                 }
 267         }
 268
 269         exit;
 270 };
 271
 272 $SIG{TERM} = \&signal_handler;
 273 $SIG{INT}  = \&signal_handler;
 274
 275 # Begin by accumulating all the variables (defined above), that we will end up
 276 # needing, first, from the command line:
 277
 278 my $rc = GetOptions("sender|from=s" => \$sender,
 279                     "in-reply-to=s" => \$initial_reply_to,
 280                     "subject=s" => \$initial_subject,
 281                     "to=s" => \@initial_to,
 282                     "to-cmd=s" => \$to_cmd,
 283                     "no-to" => \$no_to,
 284                     "cc=s" => \@initial_cc,
 285                     "no-cc" => \$no_cc,
 286                     "bcc=s" => \@bcclist,
 287                     "no-bcc" => \$no_bcc,
 288                     "chain-reply-to!" => \$chain_reply_to,
 289                     "smtp-server=s" => \$smtp_server,
 290                     "smtp-server-option=s" => \@smtp_server_options,
 291                     "smtp-server-port=s" => \$smtp_server_port,
 292                     "smtp-user=s" => \$smtp_authuser,
 293                     "smtp-pass:s" => \$smtp_authpass,
 294                     "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 295                     "smtp-encryption=s" => \$smtp_encryption,
 296                     "smtp-debug:i" => \$debug_net_smtp,
 297                     "smtp-domain:s" => \$smtp_domain,
 298                     "identity=s" => \$identity,
 299                     "annotate" => \$annotate,
 300                     "compose" => \$compose,
 301                     "quiet" => \$quiet,
 302                     "cc-cmd=s" => \$cc_cmd,
 303                     "suppress-from!" => \$suppress_from,
 304                     "suppress-cc=s" => \@suppress_cc,
 305                     "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 306                     "confirm=s" => \$confirm,
 307                     "dry-run" => \$dry_run,
 308                     "envelope-sender=s" => \$envelope_sender,
 309                     "thread!" => \$thread,
 310                     "validate!" => \$validate,
 311                     "format-patch!" => \$format_patch,
 312                     "8bit-encoding=s" => \$auto_8bit_encoding,
 313                     "force" => \$force,
 314          );
 315
 316 unless ($rc) {
 317     usage();
 318 }
 319
 320 die "Cannot run git format-patch from outside a repository\n"
 321         if $format_patch and not $repo;
 322
 323 # Now, let's fill any that aren't set in with defaults:
 324
 325 sub read_config {
 326         my ($prefix) = @_;
 327
 328         foreach my $setting (keys %config_bool_settings) {
 329                 my $target = $config_bool_settings{$setting}->[0];
 330                 $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 331         }
 332
 333         foreach my $setting (keys %config_settings) {
 334                 my $target = $config_settings{$setting};
 335                 next if $setting eq "to" and defined $no_to;
 336                 next if $setting eq "cc" and defined $no_cc;
 337                 next if $setting eq "bcc" and defined $no_bcc;
 338                 if (ref($target) eq "ARRAY") {
 339                         unless (@$target) {
 340                                 my @values = Git::config(@repo, "$prefix.$setting");
 341                                 @$target = @values if (@values && defined $values[0]);
 342                         }
 343                 }
 344                 else {
 345                         $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 346                 }
 347         }
 348
 349         if (!defined $smtp_encryption) {
 350                 my $enc = Git::config(@repo, "$prefix.smtpencryption");
 351                 if (defined $enc) {
 352                         $smtp_encryption = $enc;
 353                 } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 354                         $smtp_encryption = 'ssl';
 355                 }
 356         }
 357 }
 358
 359 # read configuration from [sendemail "$identity"], fall back on [sendemail]
 360 $identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 361 read_config("sendemail.$identity") if (defined $identity);
 362 read_config("sendemail");
 363
 364 # fall back on builtin bool defaults
 365 foreach my $setting (values %config_bool_settings) {
 366         ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 367 }
 368
 369 # 'default' encryption is none -- this only prevents a warning
 370 $smtp_encryption = '' unless (defined $smtp_encryption);
 371
 372 # Set CC suppressions
 373 my(%suppress_cc);
 374 if (@suppress_cc) {
 375         foreach my $entry (@suppress_cc) {
 376                 die "Unknown --suppress-cc field: '$entry'\n"
 377                         unless $entry =~ /^(?:all|cccmd|cc|author|self|sob|body|bodycc)$/;
 378                 $suppress_cc{$entry} = 1;
 379         }
 380 }
 381
 382 if ($suppress_cc{'all'}) {
 383         foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
 384                 $suppress_cc{$entry} = 1;
 385         }
 386         delete $suppress_cc{'all'};
 387 }
 388
 389 # If explicit old-style ones are specified, they trump --suppress-cc.
 390 $suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 391 $suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 392
 393 if ($suppress_cc{'body'}) {
 394         foreach my $entry (qw (sob bodycc)) {
 395                 $suppress_cc{$entry} = 1;
 396         }
 397         delete $suppress_cc{'body'};
 398 }
 399
 400 # Set confirm's default value
 401 my $confirm_unconfigured = !defined $confirm;
 402 if ($confirm_unconfigured) {
 403         $confirm = scalar %suppress_cc ? 'compose' : 'auto';
 404 };
 405 die "Unknown --confirm setting: '$confirm'\n"
 406         unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
 407
 408 # Debugging, print out the suppressions.
 409 if (0) {
 410         print "suppressions:\n";
 411         foreach my $entry (keys %suppress_cc) {
 412                 printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 413         }
 414 }
 415
 416 my ($repoauthor, $repocommitter);
 417 ($repoauthor) = Git::ident_person(@repo, 'author');
 418 ($repocommitter) = Git::ident_person(@repo, 'committer');
 419
 420 # Verify the user input
 421
 422 foreach my $entry (@initial_to) {
 423         die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 424 }
 425
 426 foreach my $entry (@initial_cc) {
 427         die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 428 }
 429
 430 foreach my $entry (@bcclist) {
 431         die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 432 }
 433
 434 sub parse_address_line {
 435         if ($have_mail_address) {
 436                 return map { $_->format } Mail::Address->parse($_[0]);
 437         } else {
 438                 return split_addrs($_[0]);
 439         }
 440 }
 441
 442 sub split_addrs {
 443         return quotewords('\s*,\s*', 1, @_);
 444 }
 445
 446 my %aliases;
 447 my %parse_alias = (
 448         # multiline formats can be supported in the future
 449         mutt => sub { my $fh = shift; while (<$fh>) {
 450                 if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
 451                         my ($alias, $addr) = ($1, $2);
 452                         $addr =~ s/#.*$//; # mutt allows # comments
 453                          # commas delimit multiple addresses
 454                         $aliases{$alias} = [ split_addrs($addr) ];
 455                 }}},
 456         mailrc => sub { my $fh = shift; while (<$fh>) {
 457                 if (/^alias\s+(\S+)\s+(.*)$/) {
 458                         # spaces delimit multiple addresses
 459                         $aliases{$1} = [ quotewords('\s+', 0, $2) ];
 460                 }}},
 461         pine => sub { my $fh = shift; my $f='\t[^\t]*';
 462                 for (my $x = ''; defined($x); $x = $_) {
 463                         chomp $x;
 464                         $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 465                         $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 466                         $aliases{$1} = [ split_addrs($2) ];
 467                 }},
 468         elm => sub  { my $fh = shift;
 469                       while (<$fh>) {
 470                           if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
 471                               my ($alias, $addr) = ($1, $2);
 472                                $aliases{$alias} = [ split_addrs($addr) ];
 473                           }
 474                       } },
 475
 476         gnus => sub { my $fh = shift; while (<$fh>) {
 477                 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 478                         $aliases{$1} = [ $2 ];
 479                 }}}
 480 );
 481
 482 if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 483         foreach my $file (@alias_files) {
 484                 open my $fh, '<', $file or die "opening $file: $!\n";
 485                 $parse_alias{$aliasfiletype}->($fh);
 486                 close $fh;
 487         }
 488 }
 489
 490 ($sender) = expand_aliases($sender) if defined $sender;
 491
 492 # returns 1 if the conflict must be solved using it as a format-patch argument
 493 sub check_file_rev_conflict($) {
 494         return unless $repo;
 495         my $f = shift;
 496         try {
 497                 $repo->command('rev-parse', '--verify', '--quiet', $f);
 498                 if (defined($format_patch)) {
 499                         return $format_patch;
 500                 }
 501                 die(<<EOF);
 502 File '$f' exists but it could also be the range of commits
 503 to produce patches for.  Please disambiguate by...
 504
 505     * Saying "./$f" if you mean a file; or
 506     * Giving --format-patch option if you mean a range.
 507 EOF
 508         } catch Git::Error::Command with {
 509                 return 0;
 510         }
 511 }
 512
 513 # Now that all the defaults are set, process the rest of the command line
 514 # arguments and collect up the files that need to be processed.
 515 my @rev_list_opts;
 516 while (defined(my $f = shift @ARGV)) {
 517         if ($f eq "--") {
 518                 push @rev_list_opts, "--", @ARGV;
 519                 @ARGV = ();
 520         } elsif (-d $f and !check_file_rev_conflict($f)) {
 521                 opendir my $dh, $f
 522                         or die "Failed to opendir $f: $!";
 523
 524                 push @files, grep { -f $_ } map { catfile($f, $_) }
 525                                 sort readdir $dh;
 526                 closedir $dh;
 527         } elsif ((-f $f or -p $f) and !check_file_rev_conflict($f)) {
 528                 push @files, $f;
 529         } else {
 530                 push @rev_list_opts, $f;
 531         }
 532 }
 533
 534 if (@rev_list_opts) {
 535         die "Cannot run git format-patch from outside a repository\n"
 536                 unless $repo;
 537         push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 538 }
 539
 540 if ($validate) {
 541         foreach my $f (@files) {
 542                 unless (-p $f) {
 543                         my $error = validate_patch($f);
 544                         $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 545                 }
 546         }
 547 }
 548
 549 if (@files) {
 550         unless ($quiet) {
 551                 print $_,"\n" for (@files);
 552         }
 553 } else {
 554         print STDERR "\nNo patch files specified!\n\n";
 555         usage();
 556 }
 557
 558 sub get_patch_subject {
 559         my $fn = shift;
 560         open (my $fh, '<', $fn);
 561         while (my $line = <$fh>) {
 562                 next unless ($line =~ /^Subject: (.*)$/);
 563                 close $fh;
 564                 return "GIT: $1\n";
 565         }
 566         close $fh;
 567         die "No subject line in $fn ?";
 568 }
 569
 570 if ($compose) {
 571         # Note that this does not need to be secure, but we will make a small
 572         # effort to have it be unique
 573         $compose_filename = ($repo ?
 574                 tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 575                 tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 576         open my $c, ">", $compose_filename
 577                 or die "Failed to open for writing $compose_filename: $!";
 578
 579
 580         my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 581         my $tpl_subject = $initial_subject || '';
 582         my $tpl_reply_to = $initial_reply_to || '';
 583
 584         print $c <<EOT;
 585 From $tpl_sender # This line is ignored.
 586 GIT: Lines beginning in "GIT:" will be removed.
 587 GIT: Consider including an overall diffstat or table of contents
 588 GIT: for the patch you are writing.
 589 GIT:
 590 GIT: Clear the body content if you don't wish to send a summary.
 591 From: $tpl_sender
 592 Subject: $tpl_subject
 593 In-Reply-To: $tpl_reply_to
 594
 595 EOT
 596         for my $f (@files) {
 597                 print $c get_patch_subject($f);
 598         }
 599         close $c;
 600
 601         if ($annotate) {
 602                 do_edit($compose_filename, @files);
 603         } else {
 604                 do_edit($compose_filename);
 605         }
 606
 607         open my $c2, ">", $compose_filename . ".final"
 608                 or die "Failed to open $compose_filename.final : " . $!;
 609
 610         open $c, "<", $compose_filename
 611                 or die "Failed to open $compose_filename : " . $!;
 612
 613         my $need_8bit_cte = file_has_nonascii($compose_filename);
 614         my $in_body = 0;
 615         my $summary_empty = 1;
 616         while(<$c>) {
 617                 next if m/^GIT:/;
 618                 if ($in_body) {
 619                         $summary_empty = 0 unless (/^\n$/);
 620                 } elsif (/^\n$/) {
 621                         $in_body = 1;
 622                         if ($need_8bit_cte) {
 623                                 print $c2 "MIME-Version: 1.0\n",
 624                                          "Content-Type: text/plain; ",
 625                                            "charset=UTF-8\n",
 626                                          "Content-Transfer-Encoding: 8bit\n";
 627                         }
 628                 } elsif (/^MIME-Version:/i) {
 629                         $need_8bit_cte = 0;
 630                 } elsif (/^Subject:\s*(.+)\s*$/i) {
 631                         $initial_subject = $1;
 632                         my $subject = $initial_subject;
 633                         $_ = "Subject: " .
 634                                 ($subject =~ /[^[:ascii:]]/ ?
 635                                  quote_rfc2047($subject) :
 636                                  $subject) .
 637                                 "\n";
 638                 } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 639                         $initial_reply_to = $1;
 640                         next;
 641                 } elsif (/^From:\s*(.+)\s*$/i) {
 642                         $sender = $1;
 643                         next;
 644                 } elsif (/^(?:To|Cc|Bcc):/i) {
 645                         print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 646                         next;
 647                 }
 648                 print $c2 $_;
 649         }
 650         close $c;
 651         close $c2;
 652
 653         if ($summary_empty) {
 654                 print "Summary email is empty, skipping it\n";
 655                 $compose = -1;
 656         }
 657 } elsif ($annotate) {
 658         do_edit(@files);
 659 }
 660
 661 sub ask {
 662         my ($prompt, %arg) = @_;
 663         my $valid_re = $arg{valid_re};
 664         my $default = $arg{default};
 665         my $resp;
 666         my $i = 0;
 667         return defined $default ? $default : undef
 668                 unless defined $term->IN and defined fileno($term->IN) and
 669                        defined $term->OUT and defined fileno($term->OUT);
 670         while ($i++ < 10) {
 671                 $resp = $term->readline($prompt);
 672                 if (!defined $resp) { # EOF
 673                         print "\n";
 674                         return defined $default ? $default : undef;
 675                 }
 676                 if ($resp eq '' and defined $default) {
 677                         return $default;
 678                 }
 679                 if (!defined $valid_re or $resp =~ /$valid_re/) {
 680                         return $resp;
 681                 }
 682         }
 683         return undef;
 684 }
 685
 686 my %broken_encoding;
 687
 688 sub file_declares_8bit_cte {
 689         my $fn = shift;
 690         open (my $fh, '<', $fn);
 691         while (my $line = <$fh>) {
 692                 last if ($line =~ /^$/);
 693                 return 1 if ($line =~ /^Content-Transfer-Encoding: .*8bit.*$/);
 694         }
 695         close $fh;
 696         return 0;
 697 }
 698
 699 foreach my $f (@files) {
 700         next unless (body_or_subject_has_nonascii($f)
 701                      && !file_declares_8bit_cte($f));
 702         $broken_encoding{$f} = 1;
 703 }
 704
 705 if (!defined $auto_8bit_encoding && scalar %broken_encoding) {
 706         print "The following files are 8bit, but do not declare " .
 707                 "a Content-Transfer-Encoding.\n";
 708         foreach my $f (sort keys %broken_encoding) {
 709                 print "    $f\n";
 710         }
 711         $auto_8bit_encoding = ask("Which 8bit encoding should I declare [UTF-8]? ",
 712                                   default => "UTF-8");
 713 }
 714
 715 if (!$force) {
 716         for my $f (@files) {
 717                 if (get_patch_subject($f) =~ /\Q*** SUBJECT HERE ***\E/) {
 718                         die "Refusing to send because the patch\n\t$f\n"
 719                                 . "has the template subject '*** SUBJECT HERE ***'. "
 720                                 . "Pass --force if you really want to send.\n";
 721                 }
 722         }
 723 }
 724
 725 my $prompting = 0;
 726 if (!defined $sender) {
 727         $sender = $repoauthor || $repocommitter || '';
 728         $sender = ask("Who should the emails appear to be from? [$sender] ",
 729                       default => $sender);
 730         print "Emails will be sent from: ", $sender, "\n";
 731         $prompting++;
 732 }
 733
 734 if (!@initial_to && !defined $to_cmd) {
 735         my $to = ask("Who should the emails be sent to? ");
 736         push @initial_to, parse_address_line($to) if defined $to; # sanitized/validated later
 737         $prompting++;
 738 }
 739
 740 sub expand_aliases {
 741         return map { expand_one_alias($_) } @_;
 742 }
 743
 744 my %EXPANDED_ALIASES;
 745 sub expand_one_alias {
 746         my $alias = shift;
 747         if ($EXPANDED_ALIASES{$alias}) {
 748                 die "fatal: alias '$alias' expands to itself\n";
 749         }
 750         local $EXPANDED_ALIASES{$alias} = 1;
 751         return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 752 }
 753
 754 @initial_to = expand_aliases(@initial_to);
 755 @initial_to = (map { sanitize_address($_) } @initial_to);
 756 @initial_cc = expand_aliases(@initial_cc);
 757 @bcclist = expand_aliases(@bcclist);
 758
 759 if ($thread && !defined $initial_reply_to && $prompting) {
 760         $initial_reply_to = ask(
 761                 "Message-ID to be used as In-Reply-To for the first email? ");
 762 }
 763 if (defined $initial_reply_to) {
 764         $initial_reply_to =~ s/^\s*<?//;
 765         $initial_reply_to =~ s/>?\s*$//;
 766         $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 767 }
 768
 769 if (!defined $smtp_server) {
 770         foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 771                 if (-x $_) {
 772                         $smtp_server = $_;
 773                         last;
 774                 }
 775         }
 776         $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 777 }
 778
 779 if ($compose && $compose > 0) {
 780         @files = ($compose_filename . ".final", @files);
 781 }
 782
 783 # Variables we set as part of the loop over files
 784 our ($message_id, %mail, $subject, $reply_to, $references, $message,
 785         $needs_confirm, $message_num, $ask_default);
 786
 787 sub extract_valid_address {
 788         my $address = shift;
 789         my $local_part_regexp = qr/[^<>"\s@]+/;
 790         my $domain_regexp = qr/[^.<>"\s@]+(?:\.[^.<>"\s@]+)+/;
 791
 792         # check for a local address:
 793         return $address if ($address =~ /^($local_part_regexp)$/);
 794
 795         $address =~ s/^\s*<(.*)>\s*$/$1/;
 796         if ($have_email_valid) {
 797                 return scalar Email::Valid->address($address);
 798         } else {
 799                 # less robust/correct than the monster regexp in Email::Valid,
 800                 # but still does a 99% job, and one less dependency
 801                 $address =~ /($local_part_regexp\@$domain_regexp)/;
 802                 return $1;
 803         }
 804 }
 805
 806 # Usually don't need to change anything below here.
 807
 808 # we make a "fake" message id by taking the current number
 809 # of seconds since the beginning of Unix time and tacking on
 810 # a random number to the end, in case we are called quicker than
 811 # 1 second since the last time we were called.
 812
 813 # We'll setup a template for the message id, using the "from" address:
 814
 815 my ($message_id_stamp, $message_id_serial);
 816 sub make_message_id {
 817         my $uniq;
 818         if (!defined $message_id_stamp) {
 819                 $message_id_stamp = sprintf("%s-%s", time, $$);
 820                 $message_id_serial = 0;
 821         }
 822         $message_id_serial++;
 823         $uniq = "$message_id_stamp-$message_id_serial";
 824
 825         my $du_part;
 826         for ($sender, $repocommitter, $repoauthor) {
 827                 $du_part = extract_valid_address(sanitize_address($_));
 828                 last if (defined $du_part and $du_part ne '');
 829         }
 830         if (not defined $du_part or $du_part eq '') {
 831                 require Sys::Hostname;
 832                 $du_part = 'user@' . Sys::Hostname::hostname();
 833         }
 834         my $message_id_template = "<%s-git-send-email-%s>";
 835         $message_id = sprintf($message_id_template, $uniq, $du_part);
 836         #print "new message id = $message_id\n"; # Was useful for debugging
 837 }
 838
 839
 840
 841 $time = time - scalar $#files;
 842
 843 sub unquote_rfc2047 {
 844         local ($_) = @_;
 845         my $encoding;
 846         if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
 847                 $encoding = $1;
 848                 s/_/ /g;
 849                 s/=([0-9A-F]{2})/chr(hex($1))/eg;
 850         }
 851         return wantarray ? ($_, $encoding) : $_;
 852 }
 853
 854 sub quote_rfc2047 {
 855         local $_ = shift;
 856         my $encoding = shift || 'UTF-8';
 857         s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 858         s/(.*)/=\?$encoding\?q\?$1\?=/;
 859         return $_;
 860 }
 861
 862 sub is_rfc2047_quoted {
 863         my $s = shift;
 864         my $token = qr/[^][()<>@,;:"\/?.= \000-\037\177-\377]+/;
 865         my $encoded_text = qr/[!->@-~]+/;
 866         length($s) <= 75 &&
 867         $s =~ m/^(?:"[[:ascii:]]*"|=\?$token\?$token\?$encoded_text\?=)$/o;
 868 }
 869
 870 # use the simplest quoting being able to handle the recipient
 871 sub sanitize_address {
 872         my ($recipient) = @_;
 873         my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 874
 875         if (not $recipient_name) {
 876                 return $recipient;
 877         }
 878
 879         # if recipient_name is already quoted, do nothing
 880         if (is_rfc2047_quoted($recipient_name)) {
 881                 return $recipient;
 882         }
 883
 884         # rfc2047 is needed if a non-ascii char is included
 885         if ($recipient_name =~ /[^[:ascii:]]/) {
 886                 $recipient_name =~ s/^"(.*)"$/$1/;
 887                 $recipient_name = quote_rfc2047($recipient_name);
 888         }
 889
 890         # double quotes are needed if specials or CTLs are included
 891         elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 892                 $recipient_name =~ s/(["\\\r])/\\$1/g;
 893                 $recipient_name = qq["$recipient_name"];
 894         }
 895
 896         return "$recipient_name $recipient_addr";
 897
 898 }
 899
 900 # Returns the local Fully Qualified Domain Name (FQDN) if available.
 901 #
 902 # Tightly configured MTAa require that a caller sends a real DNS
 903 # domain name that corresponds the IP address in the HELO/EHLO
 904 # handshake. This is used to verify the connection and prevent
 905 # spammers from trying to hide their identity. If the DNS and IP don't
 906 # match, the receiveing MTA may deny the connection.
 907 #
 908 # Here is a deny example of Net::SMTP with the default "localhost.localdomain"
 909 #
 910 # Net::SMTP=GLOB(0x267ec28)>>> EHLO localhost.localdomain
 911 # Net::SMTP=GLOB(0x267ec28)<<< 550 EHLO argument does not match calling host
 912 #
 913 # This maildomain*() code is based on ideas in Perl library Test::Reporter
 914 # /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
 915
 916 sub valid_fqdn {
 917         my $domain = shift;
 918         return defined $domain && !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./;
 919 }
 920
 921 sub maildomain_net {
 922         my $maildomain;
 923
 924         if (eval { require Net::Domain; 1 }) {
 925                 my $domain = Net::Domain::domainname();
 926                 $maildomain = $domain if valid_fqdn($domain);
 927         }
 928
 929         return $maildomain;
 930 }
 931
 932 sub maildomain_mta {
 933         my $maildomain;
 934
 935         if (eval { require Net::SMTP; 1 }) {
 936                 for my $host (qw(mailhost localhost)) {
 937                         my $smtp = Net::SMTP->new($host);
 938                         if (defined $smtp) {
 939                                 my $domain = $smtp->domain;
 940                                 $smtp->quit;
 941
 942                                 $maildomain = $domain if valid_fqdn($domain);
 943
 944                                 last if $maildomain;
 945                         }
 946                 }
 947         }
 948
 949         return $maildomain;
 950 }
 951
 952 sub maildomain {
 953         return maildomain_net() || maildomain_mta() || 'localhost.localdomain';
 954 }
 955
 956 # Returns 1 if the message was sent, and 0 otherwise.
 957 # In actuality, the whole program dies when there
 958 # is an error sending a message.
 959
 960 sub send_message {
 961         my @recipients = unique_email_list(@to);
 962         @cc = (grep { my $cc = extract_valid_address($_);
 963                       not grep { $cc eq $_ || $_ =~ /<\Q${cc}\E>$/ } @recipients
 964                     }
 965                map { sanitize_address($_) }
 966                @cc);
 967         my $to = join (",\n\t", @recipients);
 968         @recipients = unique_email_list(@recipients,@cc,@bcclist);
 969         @recipients = (map { extract_valid_address($_) } @recipients);
 970         my $date = format_2822_time($time++);
 971         my $gitversion = '@@GIT_VERSION@@';
 972         if ($gitversion =~ m/..GIT_VERSION../) {
 973             $gitversion = Git::version();
 974         }
 975
 976         my $cc = join(",\n\t", unique_email_list(@cc));
 977         my $ccline = "";
 978         if ($cc ne '') {
 979                 $ccline = "\nCc: $cc";
 980         }
 981         my $sanitized_sender = sanitize_address($sender);
 982         make_message_id() unless defined($message_id);
 983
 984         my $header = "From: $sanitized_sender
 985 To: $to${ccline}
 986 Subject: $subject
 987 Date: $date
 988 Message-Id: $message_id
 989 X-Mailer: git-send-email $gitversion
 990 ";
 991         if ($reply_to) {
 992
 993                 $header .= "In-Reply-To: $reply_to\n";
 994                 $header .= "References: $references\n";
 995         }
 996         if (@xh) {
 997                 $header .= join("\n", @xh) . "\n";
 998         }
 999
1000         my @sendmail_parameters = ('-i', @recipients);
1001         my $raw_from = $sanitized_sender;
1002         if (defined $envelope_sender && $envelope_sender ne "auto") {
1003                 $raw_from = $envelope_sender;
1004         }
1005         $raw_from = extract_valid_address($raw_from);
1006         unshift (@sendmail_parameters,
1007                         '-f', $raw_from) if(defined $envelope_sender);
1008
1009         if ($needs_confirm && !$dry_run) {
1010                 print "\n$header\n";
1011                 if ($needs_confirm eq "inform") {
1012                         $confirm_unconfigured = 0; # squelch this message for the rest of this run
1013                         $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
1014                         print "    The Cc list above has been expanded by additional\n";
1015                         print "    addresses found in the patch commit message. By default\n";
1016                         print "    send-email prompts before sending whenever this occurs.\n";
1017                         print "    This behavior is controlled by the sendemail.confirm\n";
1018                         print "    configuration setting.\n";
1019                         print "\n";
1020                         print "    For additional information, run 'git send-email --help'.\n";
1021                         print "    To retain the current behavior, but squelch this message,\n";
1022                         print "    run 'git config --global sendemail.confirm auto'.\n\n";
1023                 }
1024                 $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ",
1025                          valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
1026                          default => $ask_default);
1027                 die "Send this email reply required" unless defined $_;
1028                 if (/^n/i) {
1029                         return 0;
1030                 } elsif (/^q/i) {
1031                         cleanup_compose_files();
1032                         exit(0);
1033                 } elsif (/^a/i) {
1034                         $confirm = 'never';
1035                 }
1036         }
1037
1038         unshift (@sendmail_parameters, @smtp_server_options);
1039
1040         if ($dry_run) {
1041                 # We don't want to send the email.
1042         } elsif ($smtp_server =~ m#^/#) {
1043                 my $pid = open my $sm, '|-';
1044                 defined $pid or die $!;
1045                 if (!$pid) {
1046                         exec($smtp_server, @sendmail_parameters) or die $!;
1047                 }
1048                 print $sm "$header\n$message";
1049                 close $sm or die $!;
1050         } else {
1051
1052                 if (!defined $smtp_server) {
1053                         die "The required SMTP server is not properly defined."
1054                 }
1055
1056                 if ($smtp_encryption eq 'ssl') {
1057                         $smtp_server_port ||= 465; # ssmtp
1058                         require Net::SMTP::SSL;
1059                         $smtp_domain ||= maildomain();
1060                         $smtp ||= Net::SMTP::SSL->new($smtp_server,
1061                                                       Hello => $smtp_domain,
1062                                                       Port => $smtp_server_port);
1063                 }
1064                 else {
1065                         require Net::SMTP;
1066                         $smtp_domain ||= maildomain();
1067                         $smtp ||= Net::SMTP->new((defined $smtp_server_port)
1068                                                  ? "$smtp_server:$smtp_server_port"
1069                                                  : $smtp_server,
1070                                                  Hello => $smtp_domain,
1071                                                  Debug => $debug_net_smtp);
1072                         if ($smtp_encryption eq 'tls' && $smtp) {
1073                                 require Net::SMTP::SSL;
1074                                 $smtp->command('STARTTLS');
1075                                 $smtp->response();
1076                                 if ($smtp->code == 220) {
1077                                         $smtp = Net::SMTP::SSL->start_SSL($smtp)
1078                                                 or die "STARTTLS failed! ".$smtp->message;
1079                                         $smtp_encryption = '';
1080                                         # Send EHLO again to receive fresh
1081                                         # supported commands
1082                                         $smtp->hello();
1083                                 } else {
1084                                         die "Server does not support STARTTLS! ".$smtp->message;
1085                                 }
1086                         }
1087                 }
1088
1089                 if (!$smtp) {
1090                         die "Unable to initialize SMTP properly. Check config and use --smtp-debug. ",
1091                             "VALUES: server=$smtp_server ",
1092                             "encryption=$smtp_encryption ",
1093                             "hello=$smtp_domain",
1094                             defined $smtp_server_port ? "port=$smtp_server_port" : "";
1095                 }
1096
1097                 if (defined $smtp_authuser) {
1098
1099                         if (!defined $smtp_authpass) {
1100
1101                                 system "stty -echo";
1102
1103                                 do {
1104                                         print "Password: ";
1105                                         $_ = <STDIN>;
1106                                         print "\n";
1107                                 } while (!defined $_);
1108
1109                                 chomp($smtp_authpass = $_);
1110
1111                                 system "stty echo";
1112                         }
1113
1114                         $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
1115                 }
1116
1117                 $smtp->mail( $raw_from ) or die $smtp->message;
1118                 $smtp->to( @recipients ) or die $smtp->message;
1119                 $smtp->data or die $smtp->message;
1120                 $smtp->datasend("$header\n$message") or die $smtp->message;
1121                 $smtp->dataend() or die $smtp->message;
1122                 $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message;
1123         }
1124         if ($quiet) {
1125                 printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
1126         } else {
1127                 print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
1128                 if ($smtp_server !~ m#^/#) {
1129                         print "Server: $smtp_server\n";
1130                         print "MAIL FROM:<$raw_from>\n";
1131                         foreach my $entry (@recipients) {
1132                             print "RCPT TO:<$entry>\n";
1133                         }
1134                 } else {
1135                         print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
1136                 }
1137                 print $header, "\n";
1138                 if ($smtp) {
1139                         print "Result: ", $smtp->code, ' ',
1140                                 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
1141                 } else {
1142                         print "Result: OK\n";
1143                 }
1144         }
1145
1146         return 1;
1147 }
1148
1149 $reply_to = $initial_reply_to;
1150 $references = $initial_reply_to || '';
1151 $subject = $initial_subject;
1152 $message_num = 0;
1153
1154 foreach my $t (@files) {
1155         open my $fh, "<", $t or die "can't open file $t";
1156
1157         my $author = undef;
1158         my $author_encoding;
1159         my $has_content_type;
1160         my $body_encoding;
1161         @to = ();
1162         @cc = ();
1163         @xh = ();
1164         my $input_format = undef;
1165         my @header = ();
1166         $message = "";
1167         $message_num++;
1168         # First unfold multiline header fields
1169         while(<$fh>) {
1170                 last if /^\s*$/;
1171                 if (/^\s+\S/ and @header) {
1172                         chomp($header[$#header]);
1173                         s/^\s+/ /;
1174                         $header[$#header] .= $_;
1175             } else {
1176                         push(@header, $_);
1177                 }
1178         }
1179         # Now parse the header
1180         foreach(@header) {
1181                 if (/^From /) {
1182                         $input_format = 'mbox';
1183                         next;
1184                 }
1185                 chomp;
1186                 if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1187                         $input_format = 'mbox';
1188                 }
1189
1190                 if (defined $input_format && $input_format eq 'mbox') {
1191                         if (/^Subject:\s+(.*)$/) {
1192                                 $subject = $1;
1193                         }
1194                         elsif (/^From:\s+(.*)$/) {
1195                                 ($author, $author_encoding) = unquote_rfc2047($1);
1196                                 next if $suppress_cc{'author'};
1197                                 next if $suppress_cc{'self'} and $author eq $sender;
1198                                 printf("(mbox) Adding cc: %s from line '%s'\n",
1199                                         $1, $_) unless $quiet;
1200                                 push @cc, $1;
1201                         }
1202                         elsif (/^To:\s+(.*)$/) {
1203                                 foreach my $addr (parse_address_line($1)) {
1204                                         printf("(mbox) Adding to: %s from line '%s'\n",
1205                                                 $addr, $_) unless $quiet;
1206                                         push @to, sanitize_address($addr);
1207                                 }
1208                         }
1209                         elsif (/^Cc:\s+(.*)$/) {
1210                                 foreach my $addr (parse_address_line($1)) {
1211                                         if (unquote_rfc2047($addr) eq $sender) {
1212                                                 next if ($suppress_cc{'self'});
1213                                         } else {
1214                                                 next if ($suppress_cc{'cc'});
1215                                         }
1216                                         printf("(mbox) Adding cc: %s from line '%s'\n",
1217                                                 $addr, $_) unless $quiet;
1218                                         push @cc, $addr;
1219                                 }
1220                         }
1221                         elsif (/^Content-type:/i) {
1222                                 $has_content_type = 1;
1223                                 if (/charset="?([^ "]+)/) {
1224                                         $body_encoding = $1;
1225                                 }
1226                                 push @xh, $_;
1227                         }
1228                         elsif (/^Message-Id: (.*)/i) {
1229                                 $message_id = $1;
1230                         }
1231                         elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
1232                                 push @xh, $_;
1233                         }
1234
1235                 } else {
1236                         # In the traditional
1237                         # "send lots of email" format,
1238                         # line 1 = cc
1239                         # line 2 = subject
1240                         # So let's support that, too.
1241                         $input_format = 'lots';
1242                         if (@cc == 0 && !$suppress_cc{'cc'}) {
1243                                 printf("(non-mbox) Adding cc: %s from line '%s'\n",
1244                                         $_, $_) unless $quiet;
1245                                 push @cc, $_;
1246                         } elsif (!defined $subject) {
1247                                 $subject = $_;
1248                         }
1249                 }
1250         }
1251         # Now parse the message body
1252         while(<$fh>) {
1253                 $message .=  $_;
1254                 if (/^(Signed-off-by|Cc): (.*)$/i) {
1255                         chomp;
1256                         my ($what, $c) = ($1, $2);
1257                         chomp $c;
1258                         if ($c eq $sender) {
1259                                 next if ($suppress_cc{'self'});
1260                         } else {
1261                                 next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1262                                 next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1263                         }
1264                         push @cc, $c;
1265                         printf("(body) Adding cc: %s from line '%s'\n",
1266                                 $c, $_) unless $quiet;
1267                 }
1268         }
1269         close $fh;
1270
1271         push @to, recipients_cmd("to-cmd", "to", $to_cmd, $t)
1272                 if defined $to_cmd;
1273         push @cc, recipients_cmd("cc-cmd", "cc", $cc_cmd, $t)
1274                 if defined $cc_cmd && !$suppress_cc{'cccmd'};
1275
1276         if ($broken_encoding{$t} && !$has_content_type) {
1277                 $has_content_type = 1;
1278                 push @xh, "MIME-Version: 1.0",
1279                         "Content-Type: text/plain; charset=$auto_8bit_encoding",
1280                         "Content-Transfer-Encoding: 8bit";
1281                 $body_encoding = $auto_8bit_encoding;
1282         }
1283
1284         if ($broken_encoding{$t} && !is_rfc2047_quoted($subject)) {
1285                 $subject = quote_rfc2047($subject, $auto_8bit_encoding);
1286         }
1287
1288         if (defined $author and $author ne $sender) {
1289                 $message = "From: $author\n\n$message";
1290                 if (defined $author_encoding) {
1291                         if ($has_content_type) {
1292                                 if ($body_encoding eq $author_encoding) {
1293                                         # ok, we already have the right encoding
1294                                 }
1295                                 else {
1296                                         # uh oh, we should re-encode
1297                                 }
1298                         }
1299                         else {
1300                                 $has_content_type = 1;
1301                                 push @xh,
1302                                   'MIME-Version: 1.0',
1303                                   "Content-Type: text/plain; charset=$author_encoding",
1304                                   'Content-Transfer-Encoding: 8bit';
1305                         }
1306                 }
1307         }
1308
1309         $needs_confirm = (
1310                 $confirm eq "always" or
1311                 ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1312                 ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1313         $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1314
1315         @to = (@initial_to, @to);
1316         @cc = (@initial_cc, @cc);
1317
1318         my $message_was_sent = send_message();
1319
1320         # set up for the next message
1321         if ($thread && $message_was_sent &&
1322                 (chain_reply_to() || !defined $reply_to || length($reply_to) == 0 ||
1323                 $message_num == 1)) {
1324                 $reply_to = $message_id;
1325                 if (length $references > 0) {
1326                         $references .= "\n $message_id";
1327                 } else {
1328                         $references = "$message_id";
1329                 }
1330         }
1331         $message_id = undef;
1332 }
1333
1334 # Execute a command (e.g. $to_cmd) to get a list of email addresses
1335 # and return a results array
1336 sub recipients_cmd {
1337         my ($prefix, $what, $cmd, $file) = @_;
1338
1339         my $sanitized_sender = sanitize_address($sender);
1340         my @addresses = ();
1341         open my $fh, "$cmd \Q$file\E |"
1342             or die "($prefix) Could not execute '$cmd'";
1343         while (my $address = <$fh>) {
1344                 $address =~ s/^\s*//g;
1345                 $address =~ s/\s*$//g;
1346                 $address = sanitize_address($address);
1347                 next if ($address eq $sanitized_sender and $suppress_from);
1348                 push @addresses, $address;
1349                 printf("($prefix) Adding %s: %s from: '%s'\n",
1350                        $what, $address, $cmd) unless $quiet;
1351                 }
1352         close $fh
1353             or die "($prefix) failed to close pipe to '$cmd'";
1354         return @addresses;
1355 }
1356
1357 cleanup_compose_files();
1358
1359 sub cleanup_compose_files {
1360         unlink($compose_filename, $compose_filename . ".final") if $compose;
1361 }
1362
1363 $smtp->quit if $smtp;
1364
1365 sub unique_email_list {
1366         my %seen;
1367         my @emails;
1368
1369         foreach my $entry (@_) {
1370                 if (my $clean = extract_valid_address($entry)) {
1371                         $seen{$clean} ||= 0;
1372                         next if $seen{$clean}++;
1373                         push @emails, $entry;
1374                 } else {
1375                         print STDERR "W: unable to extract a valid address",
1376                                         " from: $entry\n";
1377                 }
1378         }
1379         return @emails;
1380 }
1381
1382 sub validate_patch {
1383         my $fn = shift;
1384         open(my $fh, '<', $fn)
1385                 or die "unable to open $fn: $!\n";
1386         while (my $line = <$fh>) {
1387                 if (length($line) > 998) {
1388                         return "$.: patch contains a line longer than 998 characters";
1389                 }
1390         }
1391         return undef;
1392 }
1393
1394 sub file_has_nonascii {
1395         my $fn = shift;
1396         open(my $fh, '<', $fn)
1397                 or die "unable to open $fn: $!\n";
1398         while (my $line = <$fh>) {
1399                 return 1 if $line =~ /[^[:ascii:]]/;
1400         }
1401         return 0;
1402 }
1403
1404 sub body_or_subject_has_nonascii {
1405         my $fn = shift;
1406         open(my $fh, '<', $fn)
1407                 or die "unable to open $fn: $!\n";
1408         while (my $line = <$fh>) {
1409                 last if $line =~ /^$/;
1410                 return 1 if $line =~ /^Subject.*[^[:ascii:]]/;
1411         }
1412         while (my $line = <$fh>) {
1413                 return 1 if $line =~ /[^[:ascii:]]/;
1414         }
1415         return 0;
1416 }