git-send-email.perlon commit Merge branch 'jk/repack-reuse-object' into maint (be0a4c8)
   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
  19use strict;
  20use warnings;
  21use Term::ReadLine;
  22use Getopt::Long;
  23use Text::ParseWords;
  24use Data::Dumper;
  25use Term::ANSIColor;
  26use File::Temp qw/ tempdir tempfile /;
  27use Error qw(:try);
  28use Git;
  29
  30Getopt::Long::Configure qw/ pass_through /;
  31
  32package FakeTerm;
  33sub new {
  34        my ($class, $reason) = @_;
  35        return bless \$reason, shift;
  36}
  37sub readline {
  38        my $self = shift;
  39        die "Cannot use readline on FakeTerm: $$self";
  40}
  41package main;
  42
  43
  44sub usage {
  45        print <<EOT;
  46git send-email [options] <file | directory | rev-list options >
  47
  48  Composing:
  49    --from                  <str>  * Email From:
  50    --[no-]to               <str>  * Email To:
  51    --[no-]cc               <str>  * Email Cc:
  52    --[no-]bcc              <str>  * Email Bcc:
  53    --subject               <str>  * Email "Subject:"
  54    --in-reply-to           <str>  * Email "In-Reply-To:"
  55    --annotate                     * Review each patch that will be sent in an editor.
  56    --compose                      * Open an editor for introduction.
  57    --8bit-encoding         <str>  * Encoding to assume 8bit mails if undeclared
  58
  59  Sending:
  60    --envelope-sender       <str>  * Email envelope sender.
  61    --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
  62                                     is optional. Default 'localhost'.
  63    --smtp-server-port      <int>  * Outgoing SMTP server port.
  64    --smtp-user             <str>  * Username for SMTP-AUTH.
  65    --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
  66    --smtp-encryption       <str>  * tls or ssl; anything else disables.
  67    --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
  68    --smtp-domain           <str>  * The domain name sent to HELO/EHLO handshake
  69    --smtp-debug            <0|1>  * Disable, enable Net::SMTP debug.
  70
  71  Automating:
  72    --identity              <str>  * Use the sendemail.<id> options.
  73    --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
  74    --suppress-cc           <str>  * author, self, sob, cc, cccmd, body, bodycc, all.
  75    --[no-]signed-off-by-cc        * Send to Signed-off-by: addresses. Default on.
  76    --[no-]suppress-from           * Send to self. Default off.
  77    --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default off.
  78    --[no-]thread                  * Use In-Reply-To: field. Default on.
  79
  80  Administering:
  81    --confirm               <str>  * Confirm recipients before sending;
  82                                     auto, cc, compose, always, or never.
  83    --quiet                        * Output one line of info per email.
  84    --dry-run                      * Don't actually send the emails.
  85    --[no-]validate                * Perform patch sanity checks. Default on.
  86    --[no-]format-patch            * understand any non optional arguments as
  87                                     `git format-patch` ones.
  88    --force                        * Send even if safety checks would prevent it.
  89
  90EOT
  91        exit(1);
  92}
  93
  94# most mail servers generate the Date: header, but not all...
  95sub format_2822_time {
  96        my ($time) = @_;
  97        my @localtm = localtime($time);
  98        my @gmttm = gmtime($time);
  99        my $localmin = $localtm[1] + $localtm[2] * 60;
 100        my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
 101        if ($localtm[0] != $gmttm[0]) {
 102                die "local zone differs from GMT by a non-minute interval\n";
 103        }
 104        if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
 105                $localmin += 1440;
 106        } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 107                $localmin -= 1440;
 108        } elsif ($gmttm[6] != $localtm[6]) {
 109                die "local time offset greater than or equal to 24 hours\n";
 110        }
 111        my $offset = $localmin - $gmtmin;
 112        my $offhour = $offset / 60;
 113        my $offmin = abs($offset % 60);
 114        if (abs($offhour) >= 24) {
 115                die ("local time offset greater than or equal to 24 hours\n");
 116        }
 117
 118        return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 119                       qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 120                       $localtm[3],
 121                       qw(Jan Feb Mar Apr May Jun
 122                          Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 123                       $localtm[5]+1900,
 124                       $localtm[2],
 125                       $localtm[1],
 126                       $localtm[0],
 127                       ($offset >= 0) ? '+' : '-',
 128                       abs($offhour),
 129                       $offmin,
 130                       );
 131}
 132
 133my $have_email_valid = eval { require Email::Valid; 1 };
 134my $have_mail_address = eval { require Mail::Address; 1 };
 135my $smtp;
 136my $auth;
 137
 138sub unique_email_list(@);
 139sub cleanup_compose_files();
 140
 141# Variables we fill in automatically, or via prompting:
 142my (@to,$no_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
 143        $initial_reply_to,$initial_subject,@files,
 144        $author,$sender,$smtp_authpass,$annotate,$compose,$time);
 145
 146my $envelope_sender;
 147
 148# Example reply to:
 149#$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 150
 151my $repo = eval { Git->repository() };
 152my @repo = $repo ? ($repo) : ();
 153my $term = eval {
 154        $ENV{"GIT_SEND_EMAIL_NOTTY"}
 155                ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
 156                : new Term::ReadLine 'git-send-email';
 157};
 158if ($@) {
 159        $term = new FakeTerm "$@: going non-interactive";
 160}
 161
 162# Behavior modification variables
 163my ($quiet, $dry_run) = (0, 0);
 164my $format_patch;
 165my $compose_filename;
 166my $force = 0;
 167
 168# Handle interactive edition of files.
 169my $multiedit;
 170my $editor;
 171
 172sub do_edit {
 173        if (!defined($editor)) {
 174                $editor = Git::command_oneline('var', 'GIT_EDITOR');
 175        }
 176        if (defined($multiedit) && !$multiedit) {
 177                map {
 178                        system('sh', '-c', $editor.' "$@"', $editor, $_);
 179                        if (($? & 127) || ($? >> 8)) {
 180                                die("the editor exited uncleanly, aborting everything");
 181                        }
 182                } @_;
 183        } else {
 184                system('sh', '-c', $editor.' "$@"', $editor, @_);
 185                if (($? & 127) || ($? >> 8)) {
 186                        die("the editor exited uncleanly, aborting everything");
 187                }
 188        }
 189}
 190
 191# Variables with corresponding config settings
 192my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
 193my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
 194my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts, $smtp_domain);
 195my ($validate, $confirm);
 196my (@suppress_cc);
 197my ($auto_8bit_encoding);
 198
 199my ($debug_net_smtp) = 0;               # Net::SMTP, see send_message()
 200
 201my $not_set_by_user = "true but not set by the user";
 202
 203my %config_bool_settings = (
 204    "thread" => [\$thread, 1],
 205    "chainreplyto" => [\$chain_reply_to, $not_set_by_user],
 206    "suppressfrom" => [\$suppress_from, undef],
 207    "signedoffbycc" => [\$signed_off_by_cc, undef],
 208    "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 209    "validate" => [\$validate, 1],
 210);
 211
 212my %config_settings = (
 213    "smtpserver" => \$smtp_server,
 214    "smtpserverport" => \$smtp_server_port,
 215    "smtpuser" => \$smtp_authuser,
 216    "smtppass" => \$smtp_authpass,
 217        "smtpdomain" => \$smtp_domain,
 218    "to" => \@to,
 219    "cc" => \@initial_cc,
 220    "cccmd" => \$cc_cmd,
 221    "aliasfiletype" => \$aliasfiletype,
 222    "bcc" => \@bcclist,
 223    "aliasesfile" => \@alias_files,
 224    "suppresscc" => \@suppress_cc,
 225    "envelopesender" => \$envelope_sender,
 226    "multiedit" => \$multiedit,
 227    "confirm"   => \$confirm,
 228    "from" => \$sender,
 229    "assume8bitencoding" => \$auto_8bit_encoding,
 230);
 231
 232# Help users prepare for 1.7.0
 233sub chain_reply_to {
 234        if (defined $chain_reply_to &&
 235            $chain_reply_to eq $not_set_by_user) {
 236                print STDERR
 237                    "In git 1.7.0, the default has changed to --no-chain-reply-to\n" .
 238                    "Set sendemail.chainreplyto configuration variable to true if\n" .
 239                    "you want to keep --chain-reply-to as your default.\n";
 240                $chain_reply_to = 0;
 241        }
 242        return $chain_reply_to;
 243}
 244
 245# Handle Uncouth Termination
 246sub signal_handler {
 247
 248        # Make text normal
 249        print color("reset"), "\n";
 250
 251        # SMTP password masked
 252        system "stty echo";
 253
 254        # tmp files from --compose
 255        if (defined $compose_filename) {
 256                if (-e $compose_filename) {
 257                        print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 258                }
 259                if (-e ($compose_filename . ".final")) {
 260                        print "'$compose_filename.final' contains the composed email.\n"
 261                }
 262        }
 263
 264        exit;
 265};
 266
 267$SIG{TERM} = \&signal_handler;
 268$SIG{INT}  = \&signal_handler;
 269
 270# Begin by accumulating all the variables (defined above), that we will end up
 271# needing, first, from the command line:
 272
 273my $rc = GetOptions("sender|from=s" => \$sender,
 274                    "in-reply-to=s" => \$initial_reply_to,
 275                    "subject=s" => \$initial_subject,
 276                    "to=s" => \@to,
 277                    "no-to" => \$no_to,
 278                    "cc=s" => \@initial_cc,
 279                    "no-cc" => \$no_cc,
 280                    "bcc=s" => \@bcclist,
 281                    "no-bcc" => \$no_bcc,
 282                    "chain-reply-to!" => \$chain_reply_to,
 283                    "smtp-server=s" => \$smtp_server,
 284                    "smtp-server-port=s" => \$smtp_server_port,
 285                    "smtp-user=s" => \$smtp_authuser,
 286                    "smtp-pass:s" => \$smtp_authpass,
 287                    "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 288                    "smtp-encryption=s" => \$smtp_encryption,
 289                    "smtp-debug:i" => \$debug_net_smtp,
 290                    "smtp-domain:s" => \$smtp_domain,
 291                    "identity=s" => \$identity,
 292                    "annotate" => \$annotate,
 293                    "compose" => \$compose,
 294                    "quiet" => \$quiet,
 295                    "cc-cmd=s" => \$cc_cmd,
 296                    "suppress-from!" => \$suppress_from,
 297                    "suppress-cc=s" => \@suppress_cc,
 298                    "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 299                    "confirm=s" => \$confirm,
 300                    "dry-run" => \$dry_run,
 301                    "envelope-sender=s" => \$envelope_sender,
 302                    "thread!" => \$thread,
 303                    "validate!" => \$validate,
 304                    "format-patch!" => \$format_patch,
 305                    "8bit-encoding=s" => \$auto_8bit_encoding,
 306                    "force" => \$force,
 307         );
 308
 309unless ($rc) {
 310    usage();
 311}
 312
 313die "Cannot run git format-patch from outside a repository\n"
 314        if $format_patch and not $repo;
 315
 316# Now, let's fill any that aren't set in with defaults:
 317
 318sub read_config {
 319        my ($prefix) = @_;
 320
 321        foreach my $setting (keys %config_bool_settings) {
 322                my $target = $config_bool_settings{$setting}->[0];
 323                $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 324        }
 325
 326        foreach my $setting (keys %config_settings) {
 327                my $target = $config_settings{$setting};
 328                next if $setting eq "to" and defined $no_to;
 329                next if $setting eq "cc" and defined $no_cc;
 330                next if $setting eq "bcc" and defined $no_bcc;
 331                if (ref($target) eq "ARRAY") {
 332                        unless (@$target) {
 333                                my @values = Git::config(@repo, "$prefix.$setting");
 334                                @$target = @values if (@values && defined $values[0]);
 335                        }
 336                }
 337                else {
 338                        $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 339                }
 340        }
 341
 342        if (!defined $smtp_encryption) {
 343                my $enc = Git::config(@repo, "$prefix.smtpencryption");
 344                if (defined $enc) {
 345                        $smtp_encryption = $enc;
 346                } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 347                        $smtp_encryption = 'ssl';
 348                }
 349        }
 350}
 351
 352# read configuration from [sendemail "$identity"], fall back on [sendemail]
 353$identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 354read_config("sendemail.$identity") if (defined $identity);
 355read_config("sendemail");
 356
 357# fall back on builtin bool defaults
 358foreach my $setting (values %config_bool_settings) {
 359        ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 360}
 361
 362# 'default' encryption is none -- this only prevents a warning
 363$smtp_encryption = '' unless (defined $smtp_encryption);
 364
 365# Set CC suppressions
 366my(%suppress_cc);
 367if (@suppress_cc) {
 368        foreach my $entry (@suppress_cc) {
 369                die "Unknown --suppress-cc field: '$entry'\n"
 370                        unless $entry =~ /^(all|cccmd|cc|author|self|sob|body|bodycc)$/;
 371                $suppress_cc{$entry} = 1;
 372        }
 373}
 374
 375if ($suppress_cc{'all'}) {
 376        foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
 377                $suppress_cc{$entry} = 1;
 378        }
 379        delete $suppress_cc{'all'};
 380}
 381
 382# If explicit old-style ones are specified, they trump --suppress-cc.
 383$suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 384$suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 385
 386if ($suppress_cc{'body'}) {
 387        foreach my $entry (qw (sob bodycc)) {
 388                $suppress_cc{$entry} = 1;
 389        }
 390        delete $suppress_cc{'body'};
 391}
 392
 393# Set confirm's default value
 394my $confirm_unconfigured = !defined $confirm;
 395if ($confirm_unconfigured) {
 396        $confirm = scalar %suppress_cc ? 'compose' : 'auto';
 397};
 398die "Unknown --confirm setting: '$confirm'\n"
 399        unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
 400
 401# Debugging, print out the suppressions.
 402if (0) {
 403        print "suppressions:\n";
 404        foreach my $entry (keys %suppress_cc) {
 405                printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 406        }
 407}
 408
 409my ($repoauthor, $repocommitter);
 410($repoauthor) = Git::ident_person(@repo, 'author');
 411($repocommitter) = Git::ident_person(@repo, 'committer');
 412
 413# Verify the user input
 414
 415foreach my $entry (@to) {
 416        die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 417}
 418
 419foreach my $entry (@initial_cc) {
 420        die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 421}
 422
 423foreach my $entry (@bcclist) {
 424        die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 425}
 426
 427sub parse_address_line {
 428        if ($have_mail_address) {
 429                return map { $_->format } Mail::Address->parse($_[0]);
 430        } else {
 431                return split_addrs($_[0]);
 432        }
 433}
 434
 435sub split_addrs {
 436        return quotewords('\s*,\s*', 1, @_);
 437}
 438
 439my %aliases;
 440my %parse_alias = (
 441        # multiline formats can be supported in the future
 442        mutt => sub { my $fh = shift; while (<$fh>) {
 443                if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
 444                        my ($alias, $addr) = ($1, $2);
 445                        $addr =~ s/#.*$//; # mutt allows # comments
 446                         # commas delimit multiple addresses
 447                        $aliases{$alias} = [ split_addrs($addr) ];
 448                }}},
 449        mailrc => sub { my $fh = shift; while (<$fh>) {
 450                if (/^alias\s+(\S+)\s+(.*)$/) {
 451                        # spaces delimit multiple addresses
 452                        $aliases{$1} = [ quotewords('\s+', 0, $2) ];
 453                }}},
 454        pine => sub { my $fh = shift; my $f='\t[^\t]*';
 455                for (my $x = ''; defined($x); $x = $_) {
 456                        chomp $x;
 457                        $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 458                        $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 459                        $aliases{$1} = [ split_addrs($2) ];
 460                }},
 461        elm => sub  { my $fh = shift;
 462                      while (<$fh>) {
 463                          if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
 464                              my ($alias, $addr) = ($1, $2);
 465                               $aliases{$alias} = [ split_addrs($addr) ];
 466                          }
 467                      } },
 468
 469        gnus => sub { my $fh = shift; while (<$fh>) {
 470                if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 471                        $aliases{$1} = [ $2 ];
 472                }}}
 473);
 474
 475if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 476        foreach my $file (@alias_files) {
 477                open my $fh, '<', $file or die "opening $file: $!\n";
 478                $parse_alias{$aliasfiletype}->($fh);
 479                close $fh;
 480        }
 481}
 482
 483($sender) = expand_aliases($sender) if defined $sender;
 484
 485# returns 1 if the conflict must be solved using it as a format-patch argument
 486sub check_file_rev_conflict($) {
 487        return unless $repo;
 488        my $f = shift;
 489        try {
 490                $repo->command('rev-parse', '--verify', '--quiet', $f);
 491                if (defined($format_patch)) {
 492                        return $format_patch;
 493                }
 494                die(<<EOF);
 495File '$f' exists but it could also be the range of commits
 496to produce patches for.  Please disambiguate by...
 497
 498    * Saying "./$f" if you mean a file; or
 499    * Giving --format-patch option if you mean a range.
 500EOF
 501        } catch Git::Error::Command with {
 502                return 0;
 503        }
 504}
 505
 506# Now that all the defaults are set, process the rest of the command line
 507# arguments and collect up the files that need to be processed.
 508my @rev_list_opts;
 509while (defined(my $f = shift @ARGV)) {
 510        if ($f eq "--") {
 511                push @rev_list_opts, "--", @ARGV;
 512                @ARGV = ();
 513        } elsif (-d $f and !check_file_rev_conflict($f)) {
 514                opendir(DH,$f)
 515                        or die "Failed to opendir $f: $!";
 516
 517                push @files, grep { -f $_ } map { +$f . "/" . $_ }
 518                                sort readdir(DH);
 519                closedir(DH);
 520        } elsif ((-f $f or -p $f) and !check_file_rev_conflict($f)) {
 521                push @files, $f;
 522        } else {
 523                push @rev_list_opts, $f;
 524        }
 525}
 526
 527if (@rev_list_opts) {
 528        die "Cannot run git format-patch from outside a repository\n"
 529                unless $repo;
 530        push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 531}
 532
 533if ($validate) {
 534        foreach my $f (@files) {
 535                unless (-p $f) {
 536                        my $error = validate_patch($f);
 537                        $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 538                }
 539        }
 540}
 541
 542if (@files) {
 543        unless ($quiet) {
 544                print $_,"\n" for (@files);
 545        }
 546} else {
 547        print STDERR "\nNo patch files specified!\n\n";
 548        usage();
 549}
 550
 551sub get_patch_subject($) {
 552        my $fn = shift;
 553        open (my $fh, '<', $fn);
 554        while (my $line = <$fh>) {
 555                next unless ($line =~ /^Subject: (.*)$/);
 556                close $fh;
 557                return "GIT: $1\n";
 558        }
 559        close $fh;
 560        die "No subject line in $fn ?";
 561}
 562
 563if ($compose) {
 564        # Note that this does not need to be secure, but we will make a small
 565        # effort to have it be unique
 566        $compose_filename = ($repo ?
 567                tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 568                tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 569        open(C,">",$compose_filename)
 570                or die "Failed to open for writing $compose_filename: $!";
 571
 572
 573        my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 574        my $tpl_subject = $initial_subject || '';
 575        my $tpl_reply_to = $initial_reply_to || '';
 576
 577        print C <<EOT;
 578From $tpl_sender # This line is ignored.
 579GIT: Lines beginning in "GIT:" will be removed.
 580GIT: Consider including an overall diffstat or table of contents
 581GIT: for the patch you are writing.
 582GIT:
 583GIT: Clear the body content if you don't wish to send a summary.
 584From: $tpl_sender
 585Subject: $tpl_subject
 586In-Reply-To: $tpl_reply_to
 587
 588EOT
 589        for my $f (@files) {
 590                print C get_patch_subject($f);
 591        }
 592        close(C);
 593
 594        if ($annotate) {
 595                do_edit($compose_filename, @files);
 596        } else {
 597                do_edit($compose_filename);
 598        }
 599
 600        open(C2,">",$compose_filename . ".final")
 601                or die "Failed to open $compose_filename.final : " . $!;
 602
 603        open(C,"<",$compose_filename)
 604                or die "Failed to open $compose_filename : " . $!;
 605
 606        my $need_8bit_cte = file_has_nonascii($compose_filename);
 607        my $in_body = 0;
 608        my $summary_empty = 1;
 609        while(<C>) {
 610                next if m/^GIT:/;
 611                if ($in_body) {
 612                        $summary_empty = 0 unless (/^\n$/);
 613                } elsif (/^\n$/) {
 614                        $in_body = 1;
 615                        if ($need_8bit_cte) {
 616                                print C2 "MIME-Version: 1.0\n",
 617                                         "Content-Type: text/plain; ",
 618                                           "charset=UTF-8\n",
 619                                         "Content-Transfer-Encoding: 8bit\n";
 620                        }
 621                } elsif (/^MIME-Version:/i) {
 622                        $need_8bit_cte = 0;
 623                } elsif (/^Subject:\s*(.+)\s*$/i) {
 624                        $initial_subject = $1;
 625                        my $subject = $initial_subject;
 626                        $_ = "Subject: " .
 627                                ($subject =~ /[^[:ascii:]]/ ?
 628                                 quote_rfc2047($subject) :
 629                                 $subject) .
 630                                "\n";
 631                } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 632                        $initial_reply_to = $1;
 633                        next;
 634                } elsif (/^From:\s*(.+)\s*$/i) {
 635                        $sender = $1;
 636                        next;
 637                } elsif (/^(?:To|Cc|Bcc):/i) {
 638                        print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 639                        next;
 640                }
 641                print C2 $_;
 642        }
 643        close(C);
 644        close(C2);
 645
 646        if ($summary_empty) {
 647                print "Summary email is empty, skipping it\n";
 648                $compose = -1;
 649        }
 650} elsif ($annotate) {
 651        do_edit(@files);
 652}
 653
 654sub ask {
 655        my ($prompt, %arg) = @_;
 656        my $valid_re = $arg{valid_re};
 657        my $default = $arg{default};
 658        my $resp;
 659        my $i = 0;
 660        return defined $default ? $default : undef
 661                unless defined $term->IN and defined fileno($term->IN) and
 662                       defined $term->OUT and defined fileno($term->OUT);
 663        while ($i++ < 10) {
 664                $resp = $term->readline($prompt);
 665                if (!defined $resp) { # EOF
 666                        print "\n";
 667                        return defined $default ? $default : undef;
 668                }
 669                if ($resp eq '' and defined $default) {
 670                        return $default;
 671                }
 672                if (!defined $valid_re or $resp =~ /$valid_re/) {
 673                        return $resp;
 674                }
 675        }
 676        return undef;
 677}
 678
 679my %broken_encoding;
 680
 681sub file_declares_8bit_cte($) {
 682        my $fn = shift;
 683        open (my $fh, '<', $fn);
 684        while (my $line = <$fh>) {
 685                last if ($line =~ /^$/);
 686                return 1 if ($line =~ /^Content-Transfer-Encoding: .*8bit.*$/);
 687        }
 688        close $fh;
 689        return 0;
 690}
 691
 692foreach my $f (@files) {
 693        next unless (body_or_subject_has_nonascii($f)
 694                     && !file_declares_8bit_cte($f));
 695        $broken_encoding{$f} = 1;
 696}
 697
 698if (!defined $auto_8bit_encoding && scalar %broken_encoding) {
 699        print "The following files are 8bit, but do not declare " .
 700                "a Content-Transfer-Encoding.\n";
 701        foreach my $f (sort keys %broken_encoding) {
 702                print "    $f\n";
 703        }
 704        $auto_8bit_encoding = ask("Which 8bit encoding should I declare [UTF-8]? ",
 705                                  default => "UTF-8");
 706}
 707
 708if (!$force) {
 709        for my $f (@files) {
 710                if (get_patch_subject($f) =~ /\*\*\* SUBJECT HERE \*\*\*/) {
 711                        die "Refusing to send because the patch\n\t$f\n"
 712                                . "has the template subject '*** SUBJECT HERE ***'. "
 713                                . "Pass --force if you really want to send.\n";
 714                }
 715        }
 716}
 717
 718my $prompting = 0;
 719if (!defined $sender) {
 720        $sender = $repoauthor || $repocommitter || '';
 721        $sender = ask("Who should the emails appear to be from? [$sender] ",
 722                      default => $sender);
 723        print "Emails will be sent from: ", $sender, "\n";
 724        $prompting++;
 725}
 726
 727if (!@to) {
 728        my $to = ask("Who should the emails be sent to? ");
 729        push @to, parse_address_line($to) if defined $to; # sanitized/validated later
 730        $prompting++;
 731}
 732
 733sub expand_aliases {
 734        return map { expand_one_alias($_) } @_;
 735}
 736
 737my %EXPANDED_ALIASES;
 738sub expand_one_alias {
 739        my $alias = shift;
 740        if ($EXPANDED_ALIASES{$alias}) {
 741                die "fatal: alias '$alias' expands to itself\n";
 742        }
 743        local $EXPANDED_ALIASES{$alias} = 1;
 744        return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 745}
 746
 747@to = expand_aliases(@to);
 748@to = (map { sanitize_address($_) } @to);
 749@initial_cc = expand_aliases(@initial_cc);
 750@bcclist = expand_aliases(@bcclist);
 751
 752if ($thread && !defined $initial_reply_to && $prompting) {
 753        $initial_reply_to = ask(
 754                "Message-ID to be used as In-Reply-To for the first email? ");
 755}
 756if (defined $initial_reply_to) {
 757        $initial_reply_to =~ s/^\s*<?//;
 758        $initial_reply_to =~ s/>?\s*$//;
 759        $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 760}
 761
 762if (!defined $smtp_server) {
 763        foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 764                if (-x $_) {
 765                        $smtp_server = $_;
 766                        last;
 767                }
 768        }
 769        $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 770}
 771
 772if ($compose && $compose > 0) {
 773        @files = ($compose_filename . ".final", @files);
 774}
 775
 776# Variables we set as part of the loop over files
 777our ($message_id, %mail, $subject, $reply_to, $references, $message,
 778        $needs_confirm, $message_num, $ask_default);
 779
 780sub extract_valid_address {
 781        my $address = shift;
 782        my $local_part_regexp = '[^<>"\s@]+';
 783        my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
 784
 785        # check for a local address:
 786        return $address if ($address =~ /^($local_part_regexp)$/);
 787
 788        $address =~ s/^\s*<(.*)>\s*$/$1/;
 789        if ($have_email_valid) {
 790                return scalar Email::Valid->address($address);
 791        } else {
 792                # less robust/correct than the monster regexp in Email::Valid,
 793                # but still does a 99% job, and one less dependency
 794                $address =~ /($local_part_regexp\@$domain_regexp)/;
 795                return $1;
 796        }
 797}
 798
 799# Usually don't need to change anything below here.
 800
 801# we make a "fake" message id by taking the current number
 802# of seconds since the beginning of Unix time and tacking on
 803# a random number to the end, in case we are called quicker than
 804# 1 second since the last time we were called.
 805
 806# We'll setup a template for the message id, using the "from" address:
 807
 808my ($message_id_stamp, $message_id_serial);
 809sub make_message_id {
 810        my $uniq;
 811        if (!defined $message_id_stamp) {
 812                $message_id_stamp = sprintf("%s-%s", time, $$);
 813                $message_id_serial = 0;
 814        }
 815        $message_id_serial++;
 816        $uniq = "$message_id_stamp-$message_id_serial";
 817
 818        my $du_part;
 819        for ($sender, $repocommitter, $repoauthor) {
 820                $du_part = extract_valid_address(sanitize_address($_));
 821                last if (defined $du_part and $du_part ne '');
 822        }
 823        if (not defined $du_part or $du_part eq '') {
 824                use Sys::Hostname qw();
 825                $du_part = 'user@' . Sys::Hostname::hostname();
 826        }
 827        my $message_id_template = "<%s-git-send-email-%s>";
 828        $message_id = sprintf($message_id_template, $uniq, $du_part);
 829        #print "new message id = $message_id\n"; # Was useful for debugging
 830}
 831
 832
 833
 834$time = time - scalar $#files;
 835
 836sub unquote_rfc2047 {
 837        local ($_) = @_;
 838        my $encoding;
 839        if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
 840                $encoding = $1;
 841                s/_/ /g;
 842                s/=([0-9A-F]{2})/chr(hex($1))/eg;
 843        }
 844        return wantarray ? ($_, $encoding) : $_;
 845}
 846
 847sub quote_rfc2047 {
 848        local $_ = shift;
 849        my $encoding = shift || 'UTF-8';
 850        s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 851        s/(.*)/=\?$encoding\?q\?$1\?=/;
 852        return $_;
 853}
 854
 855sub is_rfc2047_quoted {
 856        my $s = shift;
 857        my $token = '[^][()<>@,;:"\/?.= \000-\037\177-\377]+';
 858        my $encoded_text = '[!->@-~]+';
 859        length($s) <= 75 &&
 860        $s =~ m/^(?:"[[:ascii:]]*"|=\?$token\?$token\?$encoded_text\?=)$/o;
 861}
 862
 863# use the simplest quoting being able to handle the recipient
 864sub sanitize_address {
 865        my ($recipient) = @_;
 866        my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 867
 868        if (not $recipient_name) {
 869                return "$recipient";
 870        }
 871
 872        # if recipient_name is already quoted, do nothing
 873        if (is_rfc2047_quoted($recipient_name)) {
 874                return $recipient;
 875        }
 876
 877        # rfc2047 is needed if a non-ascii char is included
 878        if ($recipient_name =~ /[^[:ascii:]]/) {
 879                $recipient_name =~ s/^"(.*)"$/$1/;
 880                $recipient_name = quote_rfc2047($recipient_name);
 881        }
 882
 883        # double quotes are needed if specials or CTLs are included
 884        elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 885                $recipient_name =~ s/(["\\\r])/\\$1/g;
 886                $recipient_name = "\"$recipient_name\"";
 887        }
 888
 889        return "$recipient_name $recipient_addr";
 890
 891}
 892
 893# Returns the local Fully Qualified Domain Name (FQDN) if available.
 894#
 895# Tightly configured MTAa require that a caller sends a real DNS
 896# domain name that corresponds the IP address in the HELO/EHLO
 897# handshake. This is used to verify the connection and prevent
 898# spammers from trying to hide their identity. If the DNS and IP don't
 899# match, the receiveing MTA may deny the connection.
 900#
 901# Here is a deny example of Net::SMTP with the default "localhost.localdomain"
 902#
 903# Net::SMTP=GLOB(0x267ec28)>>> EHLO localhost.localdomain
 904# Net::SMTP=GLOB(0x267ec28)<<< 550 EHLO argument does not match calling host
 905#
 906# This maildomain*() code is based on ideas in Perl library Test::Reporter
 907# /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
 908
 909sub valid_fqdn {
 910        my $domain = shift;
 911        return defined $domain && !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./;
 912}
 913
 914sub maildomain_net {
 915        my $maildomain;
 916
 917        if (eval { require Net::Domain; 1 }) {
 918                my $domain = Net::Domain::domainname();
 919                $maildomain = $domain if valid_fqdn($domain);
 920        }
 921
 922        return $maildomain;
 923}
 924
 925sub maildomain_mta {
 926        my $maildomain;
 927
 928        if (eval { require Net::SMTP; 1 }) {
 929                for my $host (qw(mailhost localhost)) {
 930                        my $smtp = Net::SMTP->new($host);
 931                        if (defined $smtp) {
 932                                my $domain = $smtp->domain;
 933                                $smtp->quit;
 934
 935                                $maildomain = $domain if valid_fqdn($domain);
 936
 937                                last if $maildomain;
 938                        }
 939                }
 940        }
 941
 942        return $maildomain;
 943}
 944
 945sub maildomain {
 946        return maildomain_net() || maildomain_mta() || 'localhost.localdomain';
 947}
 948
 949# Returns 1 if the message was sent, and 0 otherwise.
 950# In actuality, the whole program dies when there
 951# is an error sending a message.
 952
 953sub send_message {
 954        my @recipients = unique_email_list(@to);
 955        @cc = (grep { my $cc = extract_valid_address($_);
 956                      not grep { $cc eq $_ || $_ =~ /<\Q${cc}\E>$/ } @recipients
 957                    }
 958               map { sanitize_address($_) }
 959               @cc);
 960        my $to = join (",\n\t", @recipients);
 961        @recipients = unique_email_list(@recipients,@cc,@bcclist);
 962        @recipients = (map { extract_valid_address($_) } @recipients);
 963        my $date = format_2822_time($time++);
 964        my $gitversion = '@@GIT_VERSION@@';
 965        if ($gitversion =~ m/..GIT_VERSION../) {
 966            $gitversion = Git::version();
 967        }
 968
 969        my $cc = join(",\n\t", unique_email_list(@cc));
 970        my $ccline = "";
 971        if ($cc ne '') {
 972                $ccline = "\nCc: $cc";
 973        }
 974        my $sanitized_sender = sanitize_address($sender);
 975        make_message_id() unless defined($message_id);
 976
 977        my $header = "From: $sanitized_sender
 978To: $to${ccline}
 979Subject: $subject
 980Date: $date
 981Message-Id: $message_id
 982X-Mailer: git-send-email $gitversion
 983";
 984        if ($reply_to) {
 985
 986                $header .= "In-Reply-To: $reply_to\n";
 987                $header .= "References: $references\n";
 988        }
 989        if (@xh) {
 990                $header .= join("\n", @xh) . "\n";
 991        }
 992
 993        my @sendmail_parameters = ('-i', @recipients);
 994        my $raw_from = $sanitized_sender;
 995        if (defined $envelope_sender && $envelope_sender ne "auto") {
 996                $raw_from = $envelope_sender;
 997        }
 998        $raw_from = extract_valid_address($raw_from);
 999        unshift (@sendmail_parameters,
1000                        '-f', $raw_from) if(defined $envelope_sender);
1001
1002        if ($needs_confirm && !$dry_run) {
1003                print "\n$header\n";
1004                if ($needs_confirm eq "inform") {
1005                        $confirm_unconfigured = 0; # squelch this message for the rest of this run
1006                        $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
1007                        print "    The Cc list above has been expanded by additional\n";
1008                        print "    addresses found in the patch commit message. By default\n";
1009                        print "    send-email prompts before sending whenever this occurs.\n";
1010                        print "    This behavior is controlled by the sendemail.confirm\n";
1011                        print "    configuration setting.\n";
1012                        print "\n";
1013                        print "    For additional information, run 'git send-email --help'.\n";
1014                        print "    To retain the current behavior, but squelch this message,\n";
1015                        print "    run 'git config --global sendemail.confirm auto'.\n\n";
1016                }
1017                $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ",
1018                         valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
1019                         default => $ask_default);
1020                die "Send this email reply required" unless defined $_;
1021                if (/^n/i) {
1022                        return 0;
1023                } elsif (/^q/i) {
1024                        cleanup_compose_files();
1025                        exit(0);
1026                } elsif (/^a/i) {
1027                        $confirm = 'never';
1028                }
1029        }
1030
1031        if ($dry_run) {
1032                # We don't want to send the email.
1033        } elsif ($smtp_server =~ m#^/#) {
1034                my $pid = open my $sm, '|-';
1035                defined $pid or die $!;
1036                if (!$pid) {
1037                        exec($smtp_server, @sendmail_parameters) or die $!;
1038                }
1039                print $sm "$header\n$message";
1040                close $sm or die $?;
1041        } else {
1042
1043                if (!defined $smtp_server) {
1044                        die "The required SMTP server is not properly defined."
1045                }
1046
1047                if ($smtp_encryption eq 'ssl') {
1048                        $smtp_server_port ||= 465; # ssmtp
1049                        require Net::SMTP::SSL;
1050                        $smtp_domain ||= maildomain();
1051                        $smtp ||= Net::SMTP::SSL->new($smtp_server,
1052                                                      Hello => $smtp_domain,
1053                                                      Port => $smtp_server_port);
1054                }
1055                else {
1056                        require Net::SMTP;
1057                        $smtp_domain ||= maildomain();
1058                        $smtp ||= Net::SMTP->new((defined $smtp_server_port)
1059                                                 ? "$smtp_server:$smtp_server_port"
1060                                                 : $smtp_server,
1061                                                 Hello => $smtp_domain,
1062                                                 Debug => $debug_net_smtp);
1063                        if ($smtp_encryption eq 'tls' && $smtp) {
1064                                require Net::SMTP::SSL;
1065                                $smtp->command('STARTTLS');
1066                                $smtp->response();
1067                                if ($smtp->code == 220) {
1068                                        $smtp = Net::SMTP::SSL->start_SSL($smtp)
1069                                                or die "STARTTLS failed! ".$smtp->message;
1070                                        $smtp_encryption = '';
1071                                        # Send EHLO again to receive fresh
1072                                        # supported commands
1073                                        $smtp->hello();
1074                                } else {
1075                                        die "Server does not support STARTTLS! ".$smtp->message;
1076                                }
1077                        }
1078                }
1079
1080                if (!$smtp) {
1081                        die "Unable to initialize SMTP properly. Check config and use --smtp-debug. ",
1082                            "VALUES: server=$smtp_server ",
1083                            "encryption=$smtp_encryption ",
1084                            "hello=$smtp_domain",
1085                            defined $smtp_server_port ? "port=$smtp_server_port" : "";
1086                }
1087
1088                if (defined $smtp_authuser) {
1089
1090                        if (!defined $smtp_authpass) {
1091
1092                                system "stty -echo";
1093
1094                                do {
1095                                        print "Password: ";
1096                                        $_ = <STDIN>;
1097                                        print "\n";
1098                                } while (!defined $_);
1099
1100                                chomp($smtp_authpass = $_);
1101
1102                                system "stty echo";
1103                        }
1104
1105                        $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
1106                }
1107
1108                $smtp->mail( $raw_from ) or die $smtp->message;
1109                $smtp->to( @recipients ) or die $smtp->message;
1110                $smtp->data or die $smtp->message;
1111                $smtp->datasend("$header\n$message") or die $smtp->message;
1112                $smtp->dataend() or die $smtp->message;
1113                $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message;
1114        }
1115        if ($quiet) {
1116                printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
1117        } else {
1118                print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
1119                if ($smtp_server !~ m#^/#) {
1120                        print "Server: $smtp_server\n";
1121                        print "MAIL FROM:<$raw_from>\n";
1122                        foreach my $entry (@recipients) {
1123                            print "RCPT TO:<$entry>\n";
1124                        }
1125                } else {
1126                        print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
1127                }
1128                print $header, "\n";
1129                if ($smtp) {
1130                        print "Result: ", $smtp->code, ' ',
1131                                ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
1132                } else {
1133                        print "Result: OK\n";
1134                }
1135        }
1136
1137        return 1;
1138}
1139
1140$reply_to = $initial_reply_to;
1141$references = $initial_reply_to || '';
1142$subject = $initial_subject;
1143$message_num = 0;
1144
1145foreach my $t (@files) {
1146        open(F,"<",$t) or die "can't open file $t";
1147
1148        my $author = undef;
1149        my $author_encoding;
1150        my $has_content_type;
1151        my $body_encoding;
1152        @cc = ();
1153        @xh = ();
1154        my $input_format = undef;
1155        my @header = ();
1156        $message = "";
1157        $message_num++;
1158        # First unfold multiline header fields
1159        while(<F>) {
1160                last if /^\s*$/;
1161                if (/^\s+\S/ and @header) {
1162                        chomp($header[$#header]);
1163                        s/^\s+/ /;
1164                        $header[$#header] .= $_;
1165            } else {
1166                        push(@header, $_);
1167                }
1168        }
1169        # Now parse the header
1170        foreach(@header) {
1171                if (/^From /) {
1172                        $input_format = 'mbox';
1173                        next;
1174                }
1175                chomp;
1176                if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1177                        $input_format = 'mbox';
1178                }
1179
1180                if (defined $input_format && $input_format eq 'mbox') {
1181                        if (/^Subject:\s+(.*)$/) {
1182                                $subject = $1;
1183                        }
1184                        elsif (/^From:\s+(.*)$/) {
1185                                ($author, $author_encoding) = unquote_rfc2047($1);
1186                                next if $suppress_cc{'author'};
1187                                next if $suppress_cc{'self'} and $author eq $sender;
1188                                printf("(mbox) Adding cc: %s from line '%s'\n",
1189                                        $1, $_) unless $quiet;
1190                                push @cc, $1;
1191                        }
1192                        elsif (/^Cc:\s+(.*)$/) {
1193                                foreach my $addr (parse_address_line($1)) {
1194                                        if (unquote_rfc2047($addr) eq $sender) {
1195                                                next if ($suppress_cc{'self'});
1196                                        } else {
1197                                                next if ($suppress_cc{'cc'});
1198                                        }
1199                                        printf("(mbox) Adding cc: %s from line '%s'\n",
1200                                                $addr, $_) unless $quiet;
1201                                        push @cc, $addr;
1202                                }
1203                        }
1204                        elsif (/^Content-type:/i) {
1205                                $has_content_type = 1;
1206                                if (/charset="?([^ "]+)/) {
1207                                        $body_encoding = $1;
1208                                }
1209                                push @xh, $_;
1210                        }
1211                        elsif (/^Message-Id: (.*)/i) {
1212                                $message_id = $1;
1213                        }
1214                        elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
1215                                push @xh, $_;
1216                        }
1217
1218                } else {
1219                        # In the traditional
1220                        # "send lots of email" format,
1221                        # line 1 = cc
1222                        # line 2 = subject
1223                        # So let's support that, too.
1224                        $input_format = 'lots';
1225                        if (@cc == 0 && !$suppress_cc{'cc'}) {
1226                                printf("(non-mbox) Adding cc: %s from line '%s'\n",
1227                                        $_, $_) unless $quiet;
1228                                push @cc, $_;
1229                        } elsif (!defined $subject) {
1230                                $subject = $_;
1231                        }
1232                }
1233        }
1234        # Now parse the message body
1235        while(<F>) {
1236                $message .=  $_;
1237                if (/^(Signed-off-by|Cc): (.*)$/i) {
1238                        chomp;
1239                        my ($what, $c) = ($1, $2);
1240                        chomp $c;
1241                        if ($c eq $sender) {
1242                                next if ($suppress_cc{'self'});
1243                        } else {
1244                                next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1245                                next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1246                        }
1247                        push @cc, $c;
1248                        printf("(body) Adding cc: %s from line '%s'\n",
1249                                $c, $_) unless $quiet;
1250                }
1251        }
1252        close F;
1253
1254        if (defined $cc_cmd && !$suppress_cc{'cccmd'}) {
1255                open(F, "$cc_cmd \Q$t\E |")
1256                        or die "(cc-cmd) Could not execute '$cc_cmd'";
1257                while(<F>) {
1258                        my $c = $_;
1259                        $c =~ s/^\s*//g;
1260                        $c =~ s/\n$//g;
1261                        next if ($c eq $sender and $suppress_from);
1262                        push @cc, $c;
1263                        printf("(cc-cmd) Adding cc: %s from: '%s'\n",
1264                                $c, $cc_cmd) unless $quiet;
1265                }
1266                close F
1267                        or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
1268        }
1269
1270        if ($broken_encoding{$t} && !$has_content_type) {
1271                $has_content_type = 1;
1272                push @xh, "MIME-Version: 1.0",
1273                        "Content-Type: text/plain; charset=$auto_8bit_encoding",
1274                        "Content-Transfer-Encoding: 8bit";
1275                $body_encoding = $auto_8bit_encoding;
1276        }
1277
1278        if ($broken_encoding{$t} && !is_rfc2047_quoted($subject)) {
1279                $subject = quote_rfc2047($subject, $auto_8bit_encoding);
1280        }
1281
1282        if (defined $author and $author ne $sender) {
1283                $message = "From: $author\n\n$message";
1284                if (defined $author_encoding) {
1285                        if ($has_content_type) {
1286                                if ($body_encoding eq $author_encoding) {
1287                                        # ok, we already have the right encoding
1288                                }
1289                                else {
1290                                        # uh oh, we should re-encode
1291                                }
1292                        }
1293                        else {
1294                                $has_content_type = 1;
1295                                push @xh,
1296                                  'MIME-Version: 1.0',
1297                                  "Content-Type: text/plain; charset=$author_encoding",
1298                                  'Content-Transfer-Encoding: 8bit';
1299                        }
1300                }
1301        }
1302
1303        $needs_confirm = (
1304                $confirm eq "always" or
1305                ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1306                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1307        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1308
1309        @cc = (@initial_cc, @cc);
1310
1311        my $message_was_sent = send_message();
1312
1313        # set up for the next message
1314        if ($thread && $message_was_sent &&
1315                (chain_reply_to() || !defined $reply_to || length($reply_to) == 0)) {
1316                $reply_to = $message_id;
1317                if (length $references > 0) {
1318                        $references .= "\n $message_id";
1319                } else {
1320                        $references = "$message_id";
1321                }
1322        }
1323        $message_id = undef;
1324}
1325
1326cleanup_compose_files();
1327
1328sub cleanup_compose_files() {
1329        unlink($compose_filename, $compose_filename . ".final") if $compose;
1330}
1331
1332$smtp->quit if $smtp;
1333
1334sub unique_email_list(@) {
1335        my %seen;
1336        my @emails;
1337
1338        foreach my $entry (@_) {
1339                if (my $clean = extract_valid_address($entry)) {
1340                        $seen{$clean} ||= 0;
1341                        next if $seen{$clean}++;
1342                        push @emails, $entry;
1343                } else {
1344                        print STDERR "W: unable to extract a valid address",
1345                                        " from: $entry\n";
1346                }
1347        }
1348        return @emails;
1349}
1350
1351sub validate_patch {
1352        my $fn = shift;
1353        open(my $fh, '<', $fn)
1354                or die "unable to open $fn: $!\n";
1355        while (my $line = <$fh>) {
1356                if (length($line) > 998) {
1357                        return "$.: patch contains a line longer than 998 characters";
1358                }
1359        }
1360        return undef;
1361}
1362
1363sub file_has_nonascii {
1364        my $fn = shift;
1365        open(my $fh, '<', $fn)
1366                or die "unable to open $fn: $!\n";
1367        while (my $line = <$fh>) {
1368                return 1 if $line =~ /[^[:ascii:]]/;
1369        }
1370        return 0;
1371}
1372
1373sub body_or_subject_has_nonascii {
1374        my $fn = shift;
1375        open(my $fh, '<', $fn)
1376                or die "unable to open $fn: $!\n";
1377        while (my $line = <$fh>) {
1378                last if $line =~ /^$/;
1379                return 1 if $line =~ /^Subject.*[^[:ascii:]]/;
1380        }
1381        while (my $line = <$fh>) {
1382                return 1 if $line =~ /[^[:ascii:]]/;
1383        }
1384        return 0;
1385}