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