git-send-email.perl

   1 #!/usr/bin/perl -w
   2 #
   3 # Copyright 2002,2005 Greg Kroah-Hartman <greg@kroah.com>
   4 # Copyright 2005 Ryan Anderson <ryan@michonline.com>
   5 #
   6 # GPL v2 (See COPYING)
   7 #
   8 # Ported to support git "mbox" format files by Ryan Anderson <ryan@michonline.com>
   9 #
  10 # Sends a collection of emails to the given email addresses, disturbingly fast.
  11 #
  12 # Supports two formats:
  13 # 1. mbox format files (ignoring most headers and MIME formatting - this is designed for sending patches)
  14 # 2. The original format support by Greg's script:
  15 #    first line of the message is who to CC,
  16 #    and second line is the subject of the message.
  17 #
  18
  19 use strict;
  20 use warnings;
  21 use Term::ReadLine;
  22 use Getopt::Long;
  23 use Data::Dumper;
  24 use Term::ANSIColor;
  25 use Git;
  26
  27 $SIG{INT} = sub { print color("reset"), "\n"; exit };
  28
  29 package FakeTerm;
  30 sub new {
  31         my ($class, $reason) = @_;
  32         return bless \$reason, shift;
  33 }
  34 sub readline {
  35         my $self = shift;
  36         die "Cannot use readline on FakeTerm: $$self";
  37 }
  38 package main;
  39
  40
  41 sub usage {
  42         print <<EOT;
  43 git-send-email [options] <file | directory>...
  44 Options:
  45    --from         Specify the "From:" line of the email to be sent.
  46
  47    --to           Specify the primary "To:" line of the email.
  48
  49    --cc           Specify an initial "Cc:" list for the entire series
  50                   of emails.
  51
  52    --cc-cmd       Specify a command to execute per file which adds
  53                   per file specific cc address entries
  54
  55    --bcc          Specify a list of email addresses that should be Bcc:
  56                   on all the emails.
  57
  58    --compose      Use \$GIT_EDITOR, core.editor, \$EDITOR, or \$VISUAL to edit
  59                   an introductory message for the patch series.
  60
  61    --subject      Specify the initial "Subject:" line.
  62                   Only necessary if --compose is also set.  If --compose
  63                   is not set, this will be prompted for.
  64
  65    --in-reply-to  Specify the first "In-Reply-To:" header line.
  66                   Only used if --compose is also set.  If --compose is not
  67                   set, this will be prompted for.
  68
  69    --chain-reply-to If set, the replies will all be to the previous
  70                   email sent, rather than to the first email sent.
  71                   Defaults to on.
  72
  73    --signed-off-cc Automatically add email addresses that appear in
  74                  Signed-off-by: or Cc: lines to the cc: list. Defaults to on.
  75
  76    --identity     The configuration identity, a subsection to prioritise over
  77                   the default section.
  78
  79    --smtp-server  If set, specifies the outgoing SMTP server to use.
  80                   Defaults to localhost.  Port number can be specified here with
  81                   hostname:port format or by using --smtp-server-port option.
  82
  83    --smtp-server-port Specify a port on the outgoing SMTP server to connect to.
  84
  85    --smtp-user    The username for SMTP-AUTH.
  86
  87    --smtp-pass    The password for SMTP-AUTH.
  88
  89    --smtp-ssl     If set, connects to the SMTP server using SSL.
  90
  91    --suppress-from Suppress sending emails to yourself. Defaults to off.
  92
  93    --thread       Specify that the "In-Reply-To:" header should be set on all
  94                   emails. Defaults to on.
  95
  96    --quiet        Make git-send-email less verbose.  One line per email
  97                   should be all that is output.
  98
  99    --dry-run      Do everything except actually send the emails.
 100
 101    --envelope-sender    Specify the envelope sender used to send the emails.
 102
 103    --no-validate        Don't perform any sanity checks on patches.
 104
 105 EOT
 106         exit(1);
 107 }
 108
 109 # most mail servers generate the Date: header, but not all...
 110 sub format_2822_time {
 111         my ($time) = @_;
 112         my @localtm = localtime($time);
 113         my @gmttm = gmtime($time);
 114         my $localmin = $localtm[1] + $localtm[2] * 60;
 115         my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
 116         if ($localtm[0] != $gmttm[0]) {
 117                 die "local zone differs from GMT by a non-minute interval\n";
 118         }
 119         if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
 120                 $localmin += 1440;
 121         } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 122                 $localmin -= 1440;
 123         } elsif ($gmttm[6] != $localtm[6]) {
 124                 die "local time offset greater than or equal to 24 hours\n";
 125         }
 126         my $offset = $localmin - $gmtmin;
 127         my $offhour = $offset / 60;
 128         my $offmin = abs($offset % 60);
 129         if (abs($offhour) >= 24) {
 130                 die ("local time offset greater than or equal to 24 hours\n");
 131         }
 132
 133         return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 134                        qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 135                        $localtm[3],
 136                        qw(Jan Feb Mar Apr May Jun
 137                           Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 138                        $localtm[5]+1900,
 139                        $localtm[2],
 140                        $localtm[1],
 141                        $localtm[0],
 142                        ($offset >= 0) ? '+' : '-',
 143                        abs($offhour),
 144                        $offmin,
 145                        );
 146 }
 147
 148 my $have_email_valid = eval { require Email::Valid; 1 };
 149 my $smtp;
 150 my $auth;
 151
 152 sub unique_email_list(@);
 153 sub cleanup_compose_files();
 154
 155 # Constants (essentially)
 156 my $compose_filename = ".msg.$$";
 157
 158 # Variables we fill in automatically, or via prompting:
 159 my (@to,@cc,@initial_cc,@bcclist,@xh,
 160         $initial_reply_to,$initial_subject,@files,$author,$sender,$compose,$time);
 161
 162 my $envelope_sender;
 163
 164 # Example reply to:
 165 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 166
 167 my $repo = Git->repository();
 168 my $term = eval {
 169         new Term::ReadLine 'git-send-email';
 170 };
 171 if ($@) {
 172         $term = new FakeTerm "$@: going non-interactive";
 173 }
 174
 175 # Behavior modification variables
 176 my ($quiet, $dry_run) = (0, 0);
 177
 178 # Variables with corresponding config settings
 179 my ($thread, $chain_reply_to, $suppress_from, $signed_off_cc, $cc_cmd);
 180 my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_authpass, $smtp_ssl);
 181 my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
 182 my ($no_validate);
 183
 184 my %config_bool_settings = (
 185     "thread" => [\$thread, 1],
 186     "chainreplyto" => [\$chain_reply_to, 1],
 187     "suppressfrom" => [\$suppress_from, 0],
 188     "signedoffcc" => [\$signed_off_cc, 1],
 189     "smtpssl" => [\$smtp_ssl, 0],
 190 );
 191
 192 my %config_settings = (
 193     "smtpserver" => \$smtp_server,
 194     "smtpserverport" => \$smtp_server_port,
 195     "smtpuser" => \$smtp_authuser,
 196     "smtppass" => \$smtp_authpass,
 197     "to" => \@to,
 198     "cccmd" => \$cc_cmd,
 199     "aliasfiletype" => \$aliasfiletype,
 200     "bcc" => \@bcclist,
 201     "aliasesfile" => \@alias_files,
 202 );
 203
 204 # Begin by accumulating all the variables (defined above), that we will end up
 205 # needing, first, from the command line:
 206
 207 my $rc = GetOptions("sender|from=s" => \$sender,
 208                     "in-reply-to=s" => \$initial_reply_to,
 209                     "subject=s" => \$initial_subject,
 210                     "to=s" => \@to,
 211                     "cc=s" => \@initial_cc,
 212                     "bcc=s" => \@bcclist,
 213                     "chain-reply-to!" => \$chain_reply_to,
 214                     "smtp-server=s" => \$smtp_server,
 215                     "smtp-server-port=s" => \$smtp_server_port,
 216                     "smtp-user=s" => \$smtp_authuser,
 217                     "smtp-pass=s" => \$smtp_authpass,
 218                     "smtp-ssl!" => \$smtp_ssl,
 219                     "identity=s" => \$identity,
 220                     "compose" => \$compose,
 221                     "quiet" => \$quiet,
 222                     "cc-cmd=s" => \$cc_cmd,
 223                     "suppress-from!" => \$suppress_from,
 224                     "signed-off-cc|signed-off-by-cc!" => \$signed_off_cc,
 225                     "dry-run" => \$dry_run,
 226                     "envelope-sender=s" => \$envelope_sender,
 227                     "thread!" => \$thread,
 228                     "no-validate" => \$no_validate,
 229          );
 230
 231 unless ($rc) {
 232     usage();
 233 }
 234
 235 # Now, let's fill any that aren't set in with defaults:
 236
 237 sub read_config {
 238         my ($prefix) = @_;
 239
 240         foreach my $setting (keys %config_bool_settings) {
 241                 my $target = $config_bool_settings{$setting}->[0];
 242                 $$target = $repo->config_bool("$prefix.$setting") unless (defined $$target);
 243         }
 244
 245         foreach my $setting (keys %config_settings) {
 246                 my $target = $config_settings{$setting};
 247                 if (ref($target) eq "ARRAY") {
 248                         unless (@$target) {
 249                                 my @values = $repo->config("$prefix.$setting");
 250                                 @$target = @values if (@values && defined $values[0]);
 251                         }
 252                 }
 253                 else {
 254                         $$target = $repo->config("$prefix.$setting") unless (defined $$target);
 255                 }
 256         }
 257 }
 258
 259 # read configuration from [sendemail "$identity"], fall back on [sendemail]
 260 $identity = $repo->config("sendemail.identity") unless (defined $identity);
 261 read_config("sendemail.$identity") if (defined $identity);
 262 read_config("sendemail");
 263
 264 # fall back on builtin bool defaults
 265 foreach my $setting (values %config_bool_settings) {
 266         ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 267 }
 268
 269 my ($repoauthor) = $repo->ident_person('author');
 270 my ($repocommitter) = $repo->ident_person('committer');
 271
 272 # Verify the user input
 273
 274 foreach my $entry (@to) {
 275         die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 276 }
 277
 278 foreach my $entry (@initial_cc) {
 279         die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 280 }
 281
 282 foreach my $entry (@bcclist) {
 283         die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 284 }
 285
 286 my %aliases;
 287 my %parse_alias = (
 288         # multiline formats can be supported in the future
 289         mutt => sub { my $fh = shift; while (<$fh>) {
 290                 if (/^\s*alias\s+(\S+)\s+(.*)$/) {
 291                         my ($alias, $addr) = ($1, $2);
 292                         $addr =~ s/#.*$//; # mutt allows # comments
 293                          # commas delimit multiple addresses
 294                         $aliases{$alias} = [ split(/\s*,\s*/, $addr) ];
 295                 }}},
 296         mailrc => sub { my $fh = shift; while (<$fh>) {
 297                 if (/^alias\s+(\S+)\s+(.*)$/) {
 298                         # spaces delimit multiple addresses
 299                         $aliases{$1} = [ split(/\s+/, $2) ];
 300                 }}},
 301         pine => sub { my $fh = shift; while (<$fh>) {
 302                 if (/^(\S+)\t.*\t(.*)$/) {
 303                         $aliases{$1} = [ split(/\s*,\s*/, $2) ];
 304                 }}},
 305         gnus => sub { my $fh = shift; while (<$fh>) {
 306                 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 307                         $aliases{$1} = [ $2 ];
 308                 }}}
 309 );
 310
 311 if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 312         foreach my $file (@alias_files) {
 313                 open my $fh, '<', $file or die "opening $file: $!\n";
 314                 $parse_alias{$aliasfiletype}->($fh);
 315                 close $fh;
 316         }
 317 }
 318
 319 ($sender) = expand_aliases($sender) if defined $sender;
 320
 321 # Now that all the defaults are set, process the rest of the command line
 322 # arguments and collect up the files that need to be processed.
 323 for my $f (@ARGV) {
 324         if (-d $f) {
 325                 opendir(DH,$f)
 326                         or die "Failed to opendir $f: $!";
 327
 328                 push @files, grep { -f $_ } map { +$f . "/" . $_ }
 329                                 sort readdir(DH);
 330
 331         } elsif (-f $f) {
 332                 push @files, $f;
 333
 334         } else {
 335                 print STDERR "Skipping $f - not found.\n";
 336         }
 337 }
 338
 339 if (!$no_validate) {
 340         foreach my $f (@files) {
 341                 my $error = validate_patch($f);
 342                 $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 343         }
 344 }
 345
 346 if (@files) {
 347         unless ($quiet) {
 348                 print $_,"\n" for (@files);
 349         }
 350 } else {
 351         print STDERR "\nNo patch files specified!\n\n";
 352         usage();
 353 }
 354
 355 my $prompting = 0;
 356 if (!defined $sender) {
 357         $sender = $repoauthor || $repocommitter;
 358         do {
 359                 $_ = $term->readline("Who should the emails appear to be from? [$sender] ");
 360         } while (!defined $_);
 361
 362         $sender = $_ if ($_);
 363         print "Emails will be sent from: ", $sender, "\n";
 364         $prompting++;
 365 }
 366
 367 if (!@to) {
 368         do {
 369                 $_ = $term->readline("Who should the emails be sent to? ",
 370                                 "");
 371         } while (!defined $_);
 372         my $to = $_;
 373         push @to, split /,/, $to;
 374         $prompting++;
 375 }
 376
 377 sub expand_aliases {
 378         my @cur = @_;
 379         my @last;
 380         do {
 381                 @last = @cur;
 382                 @cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
 383         } while (join(',',@cur) ne join(',',@last));
 384         return @cur;
 385 }
 386
 387 @to = expand_aliases(@to);
 388 @to = (map { sanitize_address($_) } @to);
 389 @initial_cc = expand_aliases(@initial_cc);
 390 @bcclist = expand_aliases(@bcclist);
 391
 392 if (!defined $initial_subject && $compose) {
 393         do {
 394                 $_ = $term->readline("What subject should the initial email start with? ",
 395                         $initial_subject);
 396         } while (!defined $_);
 397         $initial_subject = $_;
 398         $prompting++;
 399 }
 400
 401 if ($thread && !defined $initial_reply_to && $prompting) {
 402         do {
 403                 $_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ",
 404                         $initial_reply_to);
 405         } while (!defined $_);
 406
 407         $initial_reply_to = $_;
 408 }
 409 if (defined $initial_reply_to && $_ ne "") {
 410         $initial_reply_to =~ s/^\s*<?/</;
 411         $initial_reply_to =~ s/>?\s*$/>/;
 412 }
 413
 414 if (!defined $smtp_server) {
 415         foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 416                 if (-x $_) {
 417                         $smtp_server = $_;
 418                         last;
 419                 }
 420         }
 421         $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 422 }
 423
 424 if ($compose) {
 425         # Note that this does not need to be secure, but we will make a small
 426         # effort to have it be unique
 427         open(C,">",$compose_filename)
 428                 or die "Failed to open for writing $compose_filename: $!";
 429         print C "From $sender # This line is ignored.\n";
 430         printf C "Subject: %s\n\n", $initial_subject;
 431         printf C <<EOT;
 432 GIT: Please enter your email below.
 433 GIT: Lines beginning in "GIT: " will be removed.
 434 GIT: Consider including an overall diffstat or table of contents
 435 GIT: for the patch you are writing.
 436
 437 EOT
 438         close(C);
 439
 440         my $editor = $ENV{GIT_EDITOR} || $repo->config("core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 441         system('sh', '-c', '$0 $@', $editor, $compose_filename);
 442
 443         open(C2,">",$compose_filename . ".final")
 444                 or die "Failed to open $compose_filename.final : " . $!;
 445
 446         open(C,"<",$compose_filename)
 447                 or die "Failed to open $compose_filename : " . $!;
 448
 449         while(<C>) {
 450                 next if m/^GIT: /;
 451                 print C2 $_;
 452         }
 453         close(C);
 454         close(C2);
 455
 456         do {
 457                 $_ = $term->readline("Send this email? (y|n) ");
 458         } while (!defined $_);
 459
 460         if (uc substr($_,0,1) ne 'Y') {
 461                 cleanup_compose_files();
 462                 exit(0);
 463         }
 464
 465         @files = ($compose_filename . ".final");
 466 }
 467
 468 # Variables we set as part of the loop over files
 469 our ($message_id, %mail, $subject, $reply_to, $references, $message);
 470
 471 sub extract_valid_address {
 472         my $address = shift;
 473         my $local_part_regexp = '[^<>"\s@]+';
 474         my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
 475
 476         # check for a local address:
 477         return $address if ($address =~ /^($local_part_regexp)$/);
 478
 479         $address =~ s/^\s*<(.*)>\s*$/$1/;
 480         if ($have_email_valid) {
 481                 return scalar Email::Valid->address($address);
 482         } else {
 483                 # less robust/correct than the monster regexp in Email::Valid,
 484                 # but still does a 99% job, and one less dependency
 485                 $address =~ /($local_part_regexp\@$domain_regexp)/;
 486                 return $1;
 487         }
 488 }
 489
 490 # Usually don't need to change anything below here.
 491
 492 # we make a "fake" message id by taking the current number
 493 # of seconds since the beginning of Unix time and tacking on
 494 # a random number to the end, in case we are called quicker than
 495 # 1 second since the last time we were called.
 496
 497 # We'll setup a template for the message id, using the "from" address:
 498
 499 my ($message_id_stamp, $message_id_serial);
 500 sub make_message_id
 501 {
 502         my $uniq;
 503         if (!defined $message_id_stamp) {
 504                 $message_id_stamp = sprintf("%s-%s", time, $$);
 505                 $message_id_serial = 0;
 506         }
 507         $message_id_serial++;
 508         $uniq = "$message_id_stamp-$message_id_serial";
 509
 510         my $du_part;
 511         for ($sender, $repocommitter, $repoauthor) {
 512                 $du_part = extract_valid_address(sanitize_address($_));
 513                 last if (defined $du_part and $du_part ne '');
 514         }
 515         if (not defined $du_part or $du_part eq '') {
 516                 use Sys::Hostname qw();
 517                 $du_part = 'user@' . Sys::Hostname::hostname();
 518         }
 519         my $message_id_template = "<%s-git-send-email-%s>";
 520         $message_id = sprintf($message_id_template, $uniq, $du_part);
 521         #print "new message id = $message_id\n"; # Was useful for debugging
 522 }
 523
 524
 525
 526 $time = time - scalar $#files;
 527
 528 sub unquote_rfc2047 {
 529         local ($_) = @_;
 530         my $encoding;
 531         if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
 532                 $encoding = $1;
 533                 s/_/ /g;
 534                 s/=([0-9A-F]{2})/chr(hex($1))/eg;
 535         }
 536         return wantarray ? ($_, $encoding) : $_;
 537 }
 538
 539 # use the simplest quoting being able to handle the recipient
 540 sub sanitize_address
 541 {
 542         my ($recipient) = @_;
 543         my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 544
 545         if (not $recipient_name) {
 546                 return "$recipient";
 547         }
 548
 549         # if recipient_name is already quoted, do nothing
 550         if ($recipient_name =~ /^(".*"|=\?utf-8\?q\?.*\?=)$/) {
 551                 return $recipient;
 552         }
 553
 554         # rfc2047 is needed if a non-ascii char is included
 555         if ($recipient_name =~ /[^[:ascii:]]/) {
 556                 $recipient_name =~ s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 557                 $recipient_name =~ s/(.*)/=\?utf-8\?q\?$1\?=/;
 558         }
 559
 560         # double quotes are needed if specials or CTLs are included
 561         elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 562                 $recipient_name =~ s/(["\\\r])/\\$1/;
 563                 $recipient_name = "\"$recipient_name\"";
 564         }
 565
 566         return "$recipient_name $recipient_addr";
 567
 568 }
 569
 570 sub send_message
 571 {
 572         my @recipients = unique_email_list(@to);
 573         @cc = (grep { my $cc = extract_valid_address($_);
 574                       not grep { $cc eq $_ } @recipients
 575                     }
 576                map { sanitize_address($_) }
 577                @cc);
 578         my $to = join (",\n\t", @recipients);
 579         @recipients = unique_email_list(@recipients,@cc,@bcclist);
 580         @recipients = (map { extract_valid_address($_) } @recipients);
 581         my $date = format_2822_time($time++);
 582         my $gitversion = '@@GIT_VERSION@@';
 583         if ($gitversion =~ m/..GIT_VERSION../) {
 584             $gitversion = Git::version();
 585         }
 586
 587         my $cc = join(", ", unique_email_list(@cc));
 588         my $ccline = "";
 589         if ($cc ne '') {
 590                 $ccline = "\nCc: $cc";
 591         }
 592         my $sanitized_sender = sanitize_address($sender);
 593         make_message_id() unless defined($message_id);
 594
 595         my $header = "From: $sanitized_sender
 596 To: $to${ccline}
 597 Subject: $subject
 598 Date: $date
 599 Message-Id: $message_id
 600 X-Mailer: git-send-email $gitversion
 601 ";
 602         if ($thread && $reply_to) {
 603
 604                 $header .= "In-Reply-To: $reply_to\n";
 605                 $header .= "References: $references\n";
 606         }
 607         if (@xh) {
 608                 $header .= join("\n", @xh) . "\n";
 609         }
 610
 611         my @sendmail_parameters = ('-i', @recipients);
 612         my $raw_from = $sanitized_sender;
 613         $raw_from = $envelope_sender if (defined $envelope_sender);
 614         $raw_from = extract_valid_address($raw_from);
 615         unshift (@sendmail_parameters,
 616                         '-f', $raw_from) if(defined $envelope_sender);
 617
 618         if ($dry_run) {
 619                 # We don't want to send the email.
 620         } elsif ($smtp_server =~ m#^/#) {
 621                 my $pid = open my $sm, '|-';
 622                 defined $pid or die $!;
 623                 if (!$pid) {
 624                         exec($smtp_server, @sendmail_parameters) or die $!;
 625                 }
 626                 print $sm "$header\n$message";
 627                 close $sm or die $?;
 628         } else {
 629
 630                 if (!defined $smtp_server) {
 631                         die "The required SMTP server is not properly defined."
 632                 }
 633
 634                 if ($smtp_ssl) {
 635                         $smtp_server_port ||= 465; # ssmtp
 636                         require Net::SMTP::SSL;
 637                         $smtp ||= Net::SMTP::SSL->new($smtp_server, Port => $smtp_server_port);
 638                 }
 639                 else {
 640                         require Net::SMTP;
 641                         $smtp ||= Net::SMTP->new((defined $smtp_server_port)
 642                                                  ? "$smtp_server:$smtp_server_port"
 643                                                  : $smtp_server);
 644                 }
 645
 646                 if (!$smtp) {
 647                         die "Unable to initialize SMTP properly.  Is there something wrong with your config?";
 648                 }
 649
 650                 if ((defined $smtp_authuser) && (defined $smtp_authpass)) {
 651                         $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
 652                 }
 653                 $smtp->mail( $raw_from ) or die $smtp->message;
 654                 $smtp->to( @recipients ) or die $smtp->message;
 655                 $smtp->data or die $smtp->message;
 656                 $smtp->datasend("$header\n$message") or die $smtp->message;
 657                 $smtp->dataend() or die $smtp->message;
 658                 $smtp->ok or die "Failed to send $subject\n".$smtp->message;
 659         }
 660         if ($quiet) {
 661                 printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
 662         } else {
 663                 print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
 664                 if ($smtp_server !~ m#^/#) {
 665                         print "Server: $smtp_server\n";
 666                         print "MAIL FROM:<$raw_from>\n";
 667                         print "RCPT TO:".join(',',(map { "<$_>" } @recipients))."\n";
 668                 } else {
 669                         print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
 670                 }
 671                 print $header, "\n";
 672                 if ($smtp) {
 673                         print "Result: ", $smtp->code, ' ',
 674                                 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
 675                 } else {
 676                         print "Result: OK\n";
 677                 }
 678         }
 679 }
 680
 681 $reply_to = $initial_reply_to;
 682 $references = $initial_reply_to || '';
 683 $subject = $initial_subject;
 684
 685 foreach my $t (@files) {
 686         open(F,"<",$t) or die "can't open file $t";
 687
 688         my $author = undef;
 689         my $author_encoding;
 690         my $has_content_type;
 691         my $body_encoding;
 692         @cc = @initial_cc;
 693         @xh = ();
 694         my $input_format = undef;
 695         my $header_done = 0;
 696         $message = "";
 697         while(<F>) {
 698                 if (!$header_done) {
 699                         if (/^From /) {
 700                                 $input_format = 'mbox';
 701                                 next;
 702                         }
 703                         chomp;
 704                         if (!defined $input_format && /^[-A-Za-z]+:\s/) {
 705                                 $input_format = 'mbox';
 706                         }
 707
 708                         if (defined $input_format && $input_format eq 'mbox') {
 709                                 if (/^Subject:\s+(.*)$/) {
 710                                         $subject = $1;
 711
 712                                 } elsif (/^(Cc|From):\s+(.*)$/) {
 713                                         if (unquote_rfc2047($2) eq $sender) {
 714                                                 next if ($suppress_from);
 715                                         }
 716                                         elsif ($1 eq 'From') {
 717                                                 ($author, $author_encoding)
 718                                                   = unquote_rfc2047($2);
 719                                         }
 720                                         printf("(mbox) Adding cc: %s from line '%s'\n",
 721                                                 $2, $_) unless $quiet;
 722                                         push @cc, $2;
 723                                 }
 724                                 elsif (/^Content-type:/i) {
 725                                         $has_content_type = 1;
 726                                         if (/charset="?[^ "]+/) {
 727                                                 $body_encoding = $1;
 728                                         }
 729                                         push @xh, $_;
 730                                 }
 731                                 elsif (/^Message-Id: (.*)/i) {
 732                                         $message_id = $1;
 733                                 }
 734                                 elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
 735                                         push @xh, $_;
 736                                 }
 737
 738                         } else {
 739                                 # In the traditional
 740                                 # "send lots of email" format,
 741                                 # line 1 = cc
 742                                 # line 2 = subject
 743                                 # So let's support that, too.
 744                                 $input_format = 'lots';
 745                                 if (@cc == 0) {
 746                                         printf("(non-mbox) Adding cc: %s from line '%s'\n",
 747                                                 $_, $_) unless $quiet;
 748
 749                                         push @cc, $_;
 750
 751                                 } elsif (!defined $subject) {
 752                                         $subject = $_;
 753                                 }
 754                         }
 755
 756                         # A whitespace line will terminate the headers
 757                         if (m/^\s*$/) {
 758                                 $header_done = 1;
 759                         }
 760                 } else {
 761                         $message .=  $_;
 762                         if (/^(Signed-off-by|Cc): (.*)$/i && $signed_off_cc) {
 763                                 my $c = $2;
 764                                 chomp $c;
 765                                 next if ($c eq $sender and $suppress_from);
 766                                 push @cc, $c;
 767                                 printf("(sob) Adding cc: %s from line '%s'\n",
 768                                         $c, $_) unless $quiet;
 769                         }
 770                 }
 771         }
 772         close F;
 773
 774         if (defined $cc_cmd) {
 775                 open(F, "$cc_cmd $t |")
 776                         or die "(cc-cmd) Could not execute '$cc_cmd'";
 777                 while(<F>) {
 778                         my $c = $_;
 779                         $c =~ s/^\s*//g;
 780                         $c =~ s/\n$//g;
 781                         next if ($c eq $sender and $suppress_from);
 782                         push @cc, $c;
 783                         printf("(cc-cmd) Adding cc: %s from: '%s'\n",
 784                                 $c, $cc_cmd) unless $quiet;
 785                 }
 786                 close F
 787                         or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
 788         }
 789
 790         if (defined $author) {
 791                 $message = "From: $author\n\n$message";
 792                 if (defined $author_encoding) {
 793                         if ($has_content_type) {
 794                                 if ($body_encoding eq $author_encoding) {
 795                                         # ok, we already have the right encoding
 796                                 }
 797                                 else {
 798                                         # uh oh, we should re-encode
 799                                 }
 800                         }
 801                         else {
 802                                 push @xh,
 803                                   'MIME-Version: 1.0',
 804                                   "Content-Type: text/plain; charset=$author_encoding",
 805                                   'Content-Transfer-Encoding: 8bit';
 806                         }
 807                 }
 808         }
 809
 810         send_message();
 811
 812         # set up for the next message
 813         if ($chain_reply_to || !defined $reply_to || length($reply_to) == 0) {
 814                 $reply_to = $message_id;
 815                 if (length $references > 0) {
 816                         $references .= "\n $message_id";
 817                 } else {
 818                         $references = "$message_id";
 819                 }
 820         }
 821         $message_id = undef;
 822 }
 823
 824 if ($compose) {
 825         cleanup_compose_files();
 826 }
 827
 828 sub cleanup_compose_files() {
 829         unlink($compose_filename, $compose_filename . ".final");
 830
 831 }
 832
 833 $smtp->quit if $smtp;
 834
 835 sub unique_email_list(@) {
 836         my %seen;
 837         my @emails;
 838
 839         foreach my $entry (@_) {
 840                 if (my $clean = extract_valid_address($entry)) {
 841                         $seen{$clean} ||= 0;
 842                         next if $seen{$clean}++;
 843                         push @emails, $entry;
 844                 } else {
 845                         print STDERR "W: unable to extract a valid address",
 846                                         " from: $entry\n";
 847                 }
 848         }
 849         return @emails;
 850 }
 851
 852 sub validate_patch {
 853         my $fn = shift;
 854         open(my $fh, '<', $fn)
 855                 or die "unable to open $fn: $!\n";
 856         while (my $line = <$fh>) {
 857                 if (length($line) > 998) {
 858                         return "$.: patch contains a line longer than 998 characters";
 859                 }
 860         }
 861         return undef;
 862 }