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 File::Temp qw/ tempdir /;
  26 use Error qw(:try);
  27 use Git;
  28
  29 Getopt::Long::Configure qw/ pass_through /;
  30
  31 package FakeTerm;
  32 sub new {
  33         my ($class, $reason) = @_;
  34         return bless \$reason, shift;
  35 }
  36 sub readline {
  37         my $self = shift;
  38         die "Cannot use readline on FakeTerm: $$self";
  39 }
  40 package main;
  41
  42
  43 sub usage {
  44         print <<EOT;
  45 git send-email [options] <file | directory | rev-list options >
  46
  47   Composing:
  48     --from                  <str>  * Email From:
  49     --to                    <str>  * Email To:
  50     --cc                    <str>  * Email Cc:
  51     --bcc                   <str>  * Email Bcc:
  52     --subject               <str>  * Email "Subject:"
  53     --in-reply-to           <str>  * Email "In-Reply-To:"
  54     --annotate                     * Review each patch that will be sent in an editor.
  55     --compose                      * Open an editor for introduction.
  56
  57   Sending:
  58     --envelope-sender       <str>  * Email envelope sender.
  59     --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
  60                                      is optional. Default 'localhost'.
  61     --smtp-server-port      <int>  * Outgoing SMTP server port.
  62     --smtp-user             <str>  * Username for SMTP-AUTH.
  63     --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
  64     --smtp-encryption       <str>  * tls or ssl; anything else disables.
  65     --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
  66
  67   Automating:
  68     --identity              <str>  * Use the sendemail.<id> options.
  69     --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
  70     --suppress-cc           <str>  * author, self, sob, cccmd, all.
  71     --[no-]signed-off-by-cc        * Send to Cc: and Signed-off-by:
  72                                      addresses. Default on.
  73     --[no-]suppress-from           * Send to self. Default off.
  74     --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default on.
  75     --[no-]thread                  * Use In-Reply-To: field. Default on.
  76
  77   Administering:
  78     --quiet                        * Output one line of info per email.
  79     --dry-run                      * Don't actually send the emails.
  80     --[no-]validate                * Perform patch sanity checks. Default on.
  81     --[no-]format-patch            * understand any non optional arguments as
  82                                      `git format-patch` ones.
  83
  84 EOT
  85         exit(1);
  86 }
  87
  88 # most mail servers generate the Date: header, but not all...
  89 sub format_2822_time {
  90         my ($time) = @_;
  91         my @localtm = localtime($time);
  92         my @gmttm = gmtime($time);
  93         my $localmin = $localtm[1] + $localtm[2] * 60;
  94         my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
  95         if ($localtm[0] != $gmttm[0]) {
  96                 die "local zone differs from GMT by a non-minute interval\n";
  97         }
  98         if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
  99                 $localmin += 1440;
 100         } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 101                 $localmin -= 1440;
 102         } elsif ($gmttm[6] != $localtm[6]) {
 103                 die "local time offset greater than or equal to 24 hours\n";
 104         }
 105         my $offset = $localmin - $gmtmin;
 106         my $offhour = $offset / 60;
 107         my $offmin = abs($offset % 60);
 108         if (abs($offhour) >= 24) {
 109                 die ("local time offset greater than or equal to 24 hours\n");
 110         }
 111
 112         return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 113                        qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 114                        $localtm[3],
 115                        qw(Jan Feb Mar Apr May Jun
 116                           Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 117                        $localtm[5]+1900,
 118                        $localtm[2],
 119                        $localtm[1],
 120                        $localtm[0],
 121                        ($offset >= 0) ? '+' : '-',
 122                        abs($offhour),
 123                        $offmin,
 124                        );
 125 }
 126
 127 my $have_email_valid = eval { require Email::Valid; 1 };
 128 my $smtp;
 129 my $auth;
 130
 131 sub unique_email_list(@);
 132 sub cleanup_compose_files();
 133
 134 # Variables we fill in automatically, or via prompting:
 135 my (@to,@cc,@initial_cc,@bcclist,@xh,
 136         $initial_reply_to,$initial_subject,@files,
 137         $author,$sender,$smtp_authpass,$annotate,$compose,$time);
 138
 139 my $envelope_sender;
 140
 141 # Example reply to:
 142 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 143
 144 my $repo = eval { Git->repository() };
 145 my @repo = $repo ? ($repo) : ();
 146 my $term = eval {
 147         $ENV{"GIT_SEND_EMAIL_NOTTY"}
 148                 ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
 149                 : new Term::ReadLine 'git-send-email';
 150 };
 151 if ($@) {
 152         $term = new FakeTerm "$@: going non-interactive";
 153 }
 154
 155 # Behavior modification variables
 156 my ($quiet, $dry_run) = (0, 0);
 157 my $format_patch;
 158 my $compose_filename = $repo->repo_path() . "/.gitsendemail.msg.$$";
 159
 160 # Handle interactive edition of files.
 161 my $multiedit;
 162 my $editor = $ENV{GIT_EDITOR} || Git::config(@repo, "core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 163 sub do_edit {
 164         if (defined($multiedit) && !$multiedit) {
 165                 map {
 166                         system('sh', '-c', $editor.' "$@"', $editor, $_);
 167                         if (($? & 127) || ($? >> 8)) {
 168                                 die("the editor exited uncleanly, aborting everything");
 169                         }
 170                 } @_;
 171         } else {
 172                 system('sh', '-c', $editor.' "$@"', $editor, @_);
 173                 if (($? & 127) || ($? >> 8)) {
 174                         die("the editor exited uncleanly, aborting everything");
 175                 }
 176         }
 177 }
 178
 179 # Variables with corresponding config settings
 180 my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
 181 my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
 182 my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
 183 my ($validate);
 184 my (@suppress_cc);
 185
 186 my %config_bool_settings = (
 187     "thread" => [\$thread, 1],
 188     "chainreplyto" => [\$chain_reply_to, 1],
 189     "suppressfrom" => [\$suppress_from, undef],
 190     "signedoffbycc" => [\$signed_off_by_cc, undef],
 191     "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 192     "validate" => [\$validate, 1],
 193 );
 194
 195 my %config_settings = (
 196     "smtpserver" => \$smtp_server,
 197     "smtpserverport" => \$smtp_server_port,
 198     "smtpuser" => \$smtp_authuser,
 199     "smtppass" => \$smtp_authpass,
 200     "to" => \@to,
 201     "cc" => \@initial_cc,
 202     "cccmd" => \$cc_cmd,
 203     "aliasfiletype" => \$aliasfiletype,
 204     "bcc" => \@bcclist,
 205     "aliasesfile" => \@alias_files,
 206     "suppresscc" => \@suppress_cc,
 207     "envelopesender" => \$envelope_sender,
 208     "multiedit" => \$multiedit,
 209 );
 210
 211 # Handle Uncouth Termination
 212 sub signal_handler {
 213
 214         # Make text normal
 215         print color("reset"), "\n";
 216
 217         # SMTP password masked
 218         system "stty echo";
 219
 220         # tmp files from --compose
 221         if (-e $compose_filename) {
 222                 print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 223         }
 224         if (-e ($compose_filename . ".final")) {
 225                 print "'$compose_filename.final' contains the composed email.\n"
 226         }
 227
 228         exit;
 229 };
 230
 231 $SIG{TERM} = \&signal_handler;
 232 $SIG{INT}  = \&signal_handler;
 233
 234 # Begin by accumulating all the variables (defined above), that we will end up
 235 # needing, first, from the command line:
 236
 237 my $rc = GetOptions("sender|from=s" => \$sender,
 238                     "in-reply-to=s" => \$initial_reply_to,
 239                     "subject=s" => \$initial_subject,
 240                     "to=s" => \@to,
 241                     "cc=s" => \@initial_cc,
 242                     "bcc=s" => \@bcclist,
 243                     "chain-reply-to!" => \$chain_reply_to,
 244                     "smtp-server=s" => \$smtp_server,
 245                     "smtp-server-port=s" => \$smtp_server_port,
 246                     "smtp-user=s" => \$smtp_authuser,
 247                     "smtp-pass:s" => \$smtp_authpass,
 248                     "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 249                     "smtp-encryption=s" => \$smtp_encryption,
 250                     "identity=s" => \$identity,
 251                     "annotate" => \$annotate,
 252                     "compose" => \$compose,
 253                     "quiet" => \$quiet,
 254                     "cc-cmd=s" => \$cc_cmd,
 255                     "suppress-from!" => \$suppress_from,
 256                     "suppress-cc=s" => \@suppress_cc,
 257                     "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 258                     "dry-run" => \$dry_run,
 259                     "envelope-sender=s" => \$envelope_sender,
 260                     "thread!" => \$thread,
 261                     "validate!" => \$validate,
 262                     "format-patch!" => \$format_patch,
 263          );
 264
 265 unless ($rc) {
 266     usage();
 267 }
 268
 269 # Now, let's fill any that aren't set in with defaults:
 270
 271 sub read_config {
 272         my ($prefix) = @_;
 273
 274         foreach my $setting (keys %config_bool_settings) {
 275                 my $target = $config_bool_settings{$setting}->[0];
 276                 $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 277         }
 278
 279         foreach my $setting (keys %config_settings) {
 280                 my $target = $config_settings{$setting};
 281                 if (ref($target) eq "ARRAY") {
 282                         unless (@$target) {
 283                                 my @values = Git::config(@repo, "$prefix.$setting");
 284                                 @$target = @values if (@values && defined $values[0]);
 285                         }
 286                 }
 287                 else {
 288                         $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 289                 }
 290         }
 291
 292         if (!defined $smtp_encryption) {
 293                 my $enc = Git::config(@repo, "$prefix.smtpencryption");
 294                 if (defined $enc) {
 295                         $smtp_encryption = $enc;
 296                 } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 297                         $smtp_encryption = 'ssl';
 298                 }
 299         }
 300 }
 301
 302 # read configuration from [sendemail "$identity"], fall back on [sendemail]
 303 $identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 304 read_config("sendemail.$identity") if (defined $identity);
 305 read_config("sendemail");
 306
 307 # fall back on builtin bool defaults
 308 foreach my $setting (values %config_bool_settings) {
 309         ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 310 }
 311
 312 # 'default' encryption is none -- this only prevents a warning
 313 $smtp_encryption = '' unless (defined $smtp_encryption);
 314
 315 # Set CC suppressions
 316 my(%suppress_cc);
 317 if (@suppress_cc) {
 318         foreach my $entry (@suppress_cc) {
 319                 die "Unknown --suppress-cc field: '$entry'\n"
 320                         unless $entry =~ /^(all|cccmd|cc|author|self|sob)$/;
 321                 $suppress_cc{$entry} = 1;
 322         }
 323 }
 324
 325 if ($suppress_cc{'all'}) {
 326         foreach my $entry (qw (ccmd cc author self sob)) {
 327                 $suppress_cc{$entry} = 1;
 328         }
 329         delete $suppress_cc{'all'};
 330 }
 331
 332 # If explicit old-style ones are specified, they trump --suppress-cc.
 333 $suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 334 $suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 335
 336 # Debugging, print out the suppressions.
 337 if (0) {
 338         print "suppressions:\n";
 339         foreach my $entry (keys %suppress_cc) {
 340                 printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 341         }
 342 }
 343
 344 my ($repoauthor, $repocommitter);
 345 ($repoauthor) = Git::ident_person(@repo, 'author');
 346 ($repocommitter) = Git::ident_person(@repo, 'committer');
 347
 348 # Verify the user input
 349
 350 foreach my $entry (@to) {
 351         die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 352 }
 353
 354 foreach my $entry (@initial_cc) {
 355         die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 356 }
 357
 358 foreach my $entry (@bcclist) {
 359         die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 360 }
 361
 362 my %aliases;
 363 my %parse_alias = (
 364         # multiline formats can be supported in the future
 365         mutt => sub { my $fh = shift; while (<$fh>) {
 366                 if (/^\s*alias\s+(\S+)\s+(.*)$/) {
 367                         my ($alias, $addr) = ($1, $2);
 368                         $addr =~ s/#.*$//; # mutt allows # comments
 369                          # commas delimit multiple addresses
 370                         $aliases{$alias} = [ split(/\s*,\s*/, $addr) ];
 371                 }}},
 372         mailrc => sub { my $fh = shift; while (<$fh>) {
 373                 if (/^alias\s+(\S+)\s+(.*)$/) {
 374                         # spaces delimit multiple addresses
 375                         $aliases{$1} = [ split(/\s+/, $2) ];
 376                 }}},
 377         pine => sub { my $fh = shift; my $f='\t[^\t]*';
 378                 for (my $x = ''; defined($x); $x = $_) {
 379                         chomp $x;
 380                         $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 381                         $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 382                         $aliases{$1} = [ split(/\s*,\s*/, $2) ];
 383                 }},
 384         gnus => sub { my $fh = shift; while (<$fh>) {
 385                 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 386                         $aliases{$1} = [ $2 ];
 387                 }}}
 388 );
 389
 390 if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 391         foreach my $file (@alias_files) {
 392                 open my $fh, '<', $file or die "opening $file: $!\n";
 393                 $parse_alias{$aliasfiletype}->($fh);
 394                 close $fh;
 395         }
 396 }
 397
 398 ($sender) = expand_aliases($sender) if defined $sender;
 399
 400 # returns 1 if the conflict must be solved using it as a format-patch argument
 401 sub check_file_rev_conflict($) {
 402         my $f = shift;
 403         try {
 404                 $repo->command('rev-parse', '--verify', '--quiet', $f);
 405                 if (defined($format_patch)) {
 406                         print "foo\n";
 407                         return $format_patch;
 408                 }
 409                 die(<<EOF);
 410 File '$f' exists but it could also be the range of commits
 411 to produce patches for.  Please disambiguate by...
 412
 413     * Saying "./$f" if you mean a file; or
 414     * Giving --format-patch option if you mean a range.
 415 EOF
 416         } catch Git::Error::Command with {
 417                 return 0;
 418         }
 419 }
 420
 421 # Now that all the defaults are set, process the rest of the command line
 422 # arguments and collect up the files that need to be processed.
 423 my @rev_list_opts;
 424 while (my $f = pop @ARGV) {
 425         if ($f eq "--") {
 426                 push @rev_list_opts, "--", @ARGV;
 427                 @ARGV = ();
 428         } elsif (-d $f and !check_file_rev_conflict($f)) {
 429                 opendir(DH,$f)
 430                         or die "Failed to opendir $f: $!";
 431
 432                 push @files, grep { -f $_ } map { +$f . "/" . $_ }
 433                                 sort readdir(DH);
 434                 closedir(DH);
 435         } elsif ((-f $f or -p $f) and !check_file_rev_conflict($f)) {
 436                 push @files, $f;
 437         } else {
 438                 push @rev_list_opts, $f;
 439         }
 440 }
 441
 442 if (@rev_list_opts) {
 443         push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 444 }
 445
 446 if ($validate) {
 447         foreach my $f (@files) {
 448                 unless (-p $f) {
 449                         my $error = validate_patch($f);
 450                         $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 451                 }
 452         }
 453 }
 454
 455 if (@files) {
 456         unless ($quiet) {
 457                 print $_,"\n" for (@files);
 458         }
 459 } else {
 460         print STDERR "\nNo patch files specified!\n\n";
 461         usage();
 462 }
 463
 464 sub get_patch_subject($) {
 465         my $fn = shift;
 466         open (my $fh, '<', $fn);
 467         while (my $line = <$fh>) {
 468                 next unless ($line =~ /^Subject: (.*)$/);
 469                 close $fh;
 470                 return "GIT: $1\n";
 471         }
 472         close $fh;
 473         die "No subject line in $fn ?";
 474 }
 475
 476 if ($compose) {
 477         # Note that this does not need to be secure, but we will make a small
 478         # effort to have it be unique
 479         open(C,">",$compose_filename)
 480                 or die "Failed to open for writing $compose_filename: $!";
 481
 482
 483         my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 484         my $tpl_subject = $initial_subject || '';
 485         my $tpl_reply_to = $initial_reply_to || '';
 486
 487         print C <<EOT;
 488 From $tpl_sender # This line is ignored.
 489 GIT: Lines beginning in "GIT: " will be removed.
 490 GIT: Consider including an overall diffstat or table of contents
 491 GIT: for the patch you are writing.
 492 GIT:
 493 GIT: Clear the body content if you don't wish to send a summary.
 494 From: $tpl_sender
 495 Subject: $tpl_subject
 496 In-Reply-To: $tpl_reply_to
 497
 498 EOT
 499         for my $f (@files) {
 500                 print C get_patch_subject($f);
 501         }
 502         close(C);
 503
 504         my $editor = $ENV{GIT_EDITOR} || Git::config(@repo, "core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 505
 506         if ($annotate) {
 507                 do_edit($compose_filename, @files);
 508         } else {
 509                 do_edit($compose_filename);
 510         }
 511
 512         open(C2,">",$compose_filename . ".final")
 513                 or die "Failed to open $compose_filename.final : " . $!;
 514
 515         open(C,"<",$compose_filename)
 516                 or die "Failed to open $compose_filename : " . $!;
 517
 518         my $need_8bit_cte = file_has_nonascii($compose_filename);
 519         my $in_body = 0;
 520         my $summary_empty = 1;
 521         while(<C>) {
 522                 next if m/^GIT: /;
 523                 if ($in_body) {
 524                         $summary_empty = 0 unless (/^\n$/);
 525                 } elsif (/^\n$/) {
 526                         $in_body = 1;
 527                         if ($need_8bit_cte) {
 528                                 print C2 "MIME-Version: 1.0\n",
 529                                          "Content-Type: text/plain; ",
 530                                            "charset=utf-8\n",
 531                                          "Content-Transfer-Encoding: 8bit\n";
 532                         }
 533                 } elsif (/^MIME-Version:/i) {
 534                         $need_8bit_cte = 0;
 535                 } elsif (/^Subject:\s*(.+)\s*$/i) {
 536                         $initial_subject = $1;
 537                         my $subject = $initial_subject;
 538                         $_ = "Subject: " .
 539                                 ($subject =~ /[^[:ascii:]]/ ?
 540                                  quote_rfc2047($subject) :
 541                                  $subject) .
 542                                 "\n";
 543                 } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 544                         $initial_reply_to = $1;
 545                         next;
 546                 } elsif (/^From:\s*(.+)\s*$/i) {
 547                         $sender = $1;
 548                         next;
 549                 } elsif (/^(?:To|Cc|Bcc):/i) {
 550                         print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 551                         next;
 552                 }
 553                 print C2 $_;
 554         }
 555         close(C);
 556         close(C2);
 557
 558         if ($summary_empty) {
 559                 print "Summary email is empty, skipping it\n";
 560                 $compose = -1;
 561         }
 562 } elsif ($annotate) {
 563         do_edit(@files);
 564 }
 565
 566 my $prompting = 0;
 567 if (!defined $sender) {
 568         $sender = $repoauthor || $repocommitter || '';
 569
 570         while (1) {
 571                 $_ = $term->readline("Who should the emails appear to be from? [$sender] ");
 572                 last if defined $_;
 573                 print "\n";
 574         }
 575
 576         $sender = $_ if ($_);
 577         print "Emails will be sent from: ", $sender, "\n";
 578         $prompting++;
 579 }
 580
 581 if (!@to) {
 582
 583
 584         while (1) {
 585                 $_ = $term->readline("Who should the emails be sent to? ", "");
 586                 last if defined $_;
 587                 print "\n";
 588         }
 589
 590         my $to = $_;
 591         push @to, split /,\s*/, $to;
 592         $prompting++;
 593 }
 594
 595 sub expand_aliases {
 596         my @cur = @_;
 597         my @last;
 598         do {
 599                 @last = @cur;
 600                 @cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
 601         } while (join(',',@cur) ne join(',',@last));
 602         return @cur;
 603 }
 604
 605 @to = expand_aliases(@to);
 606 @to = (map { sanitize_address($_) } @to);
 607 @initial_cc = expand_aliases(@initial_cc);
 608 @bcclist = expand_aliases(@bcclist);
 609
 610 if ($thread && !defined $initial_reply_to && $prompting) {
 611         while (1) {
 612                 $_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ", $initial_reply_to);
 613                 last if defined $_;
 614                 print "\n";
 615         }
 616
 617         $initial_reply_to = $_;
 618 }
 619 if (defined $initial_reply_to) {
 620         $initial_reply_to =~ s/^\s*<?//;
 621         $initial_reply_to =~ s/>?\s*$//;
 622         $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 623 }
 624
 625 if (!defined $smtp_server) {
 626         foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 627                 if (-x $_) {
 628                         $smtp_server = $_;
 629                         last;
 630                 }
 631         }
 632         $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 633 }
 634
 635 if ($compose) {
 636         while (1) {
 637                 $_ = $term->readline("Send this email? (y|n) ");
 638                 last if defined $_;
 639                 print "\n";
 640         }
 641
 642         if (uc substr($_,0,1) ne 'Y') {
 643                 cleanup_compose_files();
 644                 exit(0);
 645         }
 646
 647         if ($compose > 0) {
 648                 @files = ($compose_filename . ".final", @files);
 649         }
 650 }
 651
 652 # Variables we set as part of the loop over files
 653 our ($message_id, %mail, $subject, $reply_to, $references, $message);
 654
 655 sub extract_valid_address {
 656         my $address = shift;
 657         my $local_part_regexp = '[^<>"\s@]+';
 658         my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
 659
 660         # check for a local address:
 661         return $address if ($address =~ /^($local_part_regexp)$/);
 662
 663         $address =~ s/^\s*<(.*)>\s*$/$1/;
 664         if ($have_email_valid) {
 665                 return scalar Email::Valid->address($address);
 666         } else {
 667                 # less robust/correct than the monster regexp in Email::Valid,
 668                 # but still does a 99% job, and one less dependency
 669                 $address =~ /($local_part_regexp\@$domain_regexp)/;
 670                 return $1;
 671         }
 672 }
 673
 674 # Usually don't need to change anything below here.
 675
 676 # we make a "fake" message id by taking the current number
 677 # of seconds since the beginning of Unix time and tacking on
 678 # a random number to the end, in case we are called quicker than
 679 # 1 second since the last time we were called.
 680
 681 # We'll setup a template for the message id, using the "from" address:
 682
 683 my ($message_id_stamp, $message_id_serial);
 684 sub make_message_id
 685 {
 686         my $uniq;
 687         if (!defined $message_id_stamp) {
 688                 $message_id_stamp = sprintf("%s-%s", time, $$);
 689                 $message_id_serial = 0;
 690         }
 691         $message_id_serial++;
 692         $uniq = "$message_id_stamp-$message_id_serial";
 693
 694         my $du_part;
 695         for ($sender, $repocommitter, $repoauthor) {
 696                 $du_part = extract_valid_address(sanitize_address($_));
 697                 last if (defined $du_part and $du_part ne '');
 698         }
 699         if (not defined $du_part or $du_part eq '') {
 700                 use Sys::Hostname qw();
 701                 $du_part = 'user@' . Sys::Hostname::hostname();
 702         }
 703         my $message_id_template = "<%s-git-send-email-%s>";
 704         $message_id = sprintf($message_id_template, $uniq, $du_part);
 705         #print "new message id = $message_id\n"; # Was useful for debugging
 706 }
 707
 708
 709
 710 $time = time - scalar $#files;
 711
 712 sub unquote_rfc2047 {
 713         local ($_) = @_;
 714         my $encoding;
 715         if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
 716                 $encoding = $1;
 717                 s/_/ /g;
 718                 s/=([0-9A-F]{2})/chr(hex($1))/eg;
 719         }
 720         return wantarray ? ($_, $encoding) : $_;
 721 }
 722
 723 sub quote_rfc2047 {
 724         local $_ = shift;
 725         my $encoding = shift || 'utf-8';
 726         s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 727         s/(.*)/=\?$encoding\?q\?$1\?=/;
 728         return $_;
 729 }
 730
 731 # use the simplest quoting being able to handle the recipient
 732 sub sanitize_address
 733 {
 734         my ($recipient) = @_;
 735         my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 736
 737         if (not $recipient_name) {
 738                 return "$recipient";
 739         }
 740
 741         # if recipient_name is already quoted, do nothing
 742         if ($recipient_name =~ /^(".*"|=\?utf-8\?q\?.*\?=)$/) {
 743                 return $recipient;
 744         }
 745
 746         # rfc2047 is needed if a non-ascii char is included
 747         if ($recipient_name =~ /[^[:ascii:]]/) {
 748                 $recipient_name = quote_rfc2047($recipient_name);
 749         }
 750
 751         # double quotes are needed if specials or CTLs are included
 752         elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 753                 $recipient_name =~ s/(["\\\r])/\\$1/g;
 754                 $recipient_name = "\"$recipient_name\"";
 755         }
 756
 757         return "$recipient_name $recipient_addr";
 758
 759 }
 760
 761 sub send_message
 762 {
 763         my @recipients = unique_email_list(@to);
 764         @cc = (grep { my $cc = extract_valid_address($_);
 765                       not grep { $cc eq $_ } @recipients
 766                     }
 767                map { sanitize_address($_) }
 768                @cc);
 769         my $to = join (",\n\t", @recipients);
 770         @recipients = unique_email_list(@recipients,@cc,@bcclist);
 771         @recipients = (map { extract_valid_address($_) } @recipients);
 772         my $date = format_2822_time($time++);
 773         my $gitversion = '@@GIT_VERSION@@';
 774         if ($gitversion =~ m/..GIT_VERSION../) {
 775             $gitversion = Git::version();
 776         }
 777
 778         my $cc = join(", ", unique_email_list(@cc));
 779         my $ccline = "";
 780         if ($cc ne '') {
 781                 $ccline = "\nCc: $cc";
 782         }
 783         my $sanitized_sender = sanitize_address($sender);
 784         make_message_id() unless defined($message_id);
 785
 786         my $header = "From: $sanitized_sender
 787 To: $to${ccline}
 788 Subject: $subject
 789 Date: $date
 790 Message-Id: $message_id
 791 X-Mailer: git-send-email $gitversion
 792 ";
 793         if ($thread && $reply_to) {
 794
 795                 $header .= "In-Reply-To: $reply_to\n";
 796                 $header .= "References: $references\n";
 797         }
 798         if (@xh) {
 799                 $header .= join("\n", @xh) . "\n";
 800         }
 801
 802         my @sendmail_parameters = ('-i', @recipients);
 803         my $raw_from = $sanitized_sender;
 804         $raw_from = $envelope_sender if (defined $envelope_sender);
 805         $raw_from = extract_valid_address($raw_from);
 806         unshift (@sendmail_parameters,
 807                         '-f', $raw_from) if(defined $envelope_sender);
 808
 809         if ($dry_run) {
 810                 # We don't want to send the email.
 811         } elsif ($smtp_server =~ m#^/#) {
 812                 my $pid = open my $sm, '|-';
 813                 defined $pid or die $!;
 814                 if (!$pid) {
 815                         exec($smtp_server, @sendmail_parameters) or die $!;
 816                 }
 817                 print $sm "$header\n$message";
 818                 close $sm or die $?;
 819         } else {
 820
 821                 if (!defined $smtp_server) {
 822                         die "The required SMTP server is not properly defined."
 823                 }
 824
 825                 if ($smtp_encryption eq 'ssl') {
 826                         $smtp_server_port ||= 465; # ssmtp
 827                         require Net::SMTP::SSL;
 828                         $smtp ||= Net::SMTP::SSL->new($smtp_server, Port => $smtp_server_port);
 829                 }
 830                 else {
 831                         require Net::SMTP;
 832                         $smtp ||= Net::SMTP->new((defined $smtp_server_port)
 833                                                  ? "$smtp_server:$smtp_server_port"
 834                                                  : $smtp_server);
 835                         if ($smtp_encryption eq 'tls') {
 836                                 require Net::SMTP::SSL;
 837                                 $smtp->command('STARTTLS');
 838                                 $smtp->response();
 839                                 if ($smtp->code == 220) {
 840                                         $smtp = Net::SMTP::SSL->start_SSL($smtp)
 841                                                 or die "STARTTLS failed! ".$smtp->message;
 842                                         $smtp_encryption = '';
 843                                         # Send EHLO again to receive fresh
 844                                         # supported commands
 845                                         $smtp->hello();
 846                                 } else {
 847                                         die "Server does not support STARTTLS! ".$smtp->message;
 848                                 }
 849                         }
 850                 }
 851
 852                 if (!$smtp) {
 853                         die "Unable to initialize SMTP properly.  Is there something wrong with your config?";
 854                 }
 855
 856                 if (defined $smtp_authuser) {
 857
 858                         if (!defined $smtp_authpass) {
 859
 860                                 system "stty -echo";
 861
 862                                 do {
 863                                         print "Password: ";
 864                                         $_ = <STDIN>;
 865                                         print "\n";
 866                                 } while (!defined $_);
 867
 868                                 chomp($smtp_authpass = $_);
 869
 870                                 system "stty echo";
 871                         }
 872
 873                         $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
 874                 }
 875
 876                 $smtp->mail( $raw_from ) or die $smtp->message;
 877                 $smtp->to( @recipients ) or die $smtp->message;
 878                 $smtp->data or die $smtp->message;
 879                 $smtp->datasend("$header\n$message") or die $smtp->message;
 880                 $smtp->dataend() or die $smtp->message;
 881                 $smtp->ok or die "Failed to send $subject\n".$smtp->message;
 882         }
 883         if ($quiet) {
 884                 printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
 885         } else {
 886                 print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
 887                 if ($smtp_server !~ m#^/#) {
 888                         print "Server: $smtp_server\n";
 889                         print "MAIL FROM:<$raw_from>\n";
 890                         print "RCPT TO:".join(',',(map { "<$_>" } @recipients))."\n";
 891                 } else {
 892                         print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
 893                 }
 894                 print $header, "\n";
 895                 if ($smtp) {
 896                         print "Result: ", $smtp->code, ' ',
 897                                 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
 898                 } else {
 899                         print "Result: OK\n";
 900                 }
 901         }
 902 }
 903
 904 $reply_to = $initial_reply_to;
 905 $references = $initial_reply_to || '';
 906 $subject = $initial_subject;
 907
 908 foreach my $t (@files) {
 909         open(F,"<",$t) or die "can't open file $t";
 910
 911         my $author = undef;
 912         my $author_encoding;
 913         my $has_content_type;
 914         my $body_encoding;
 915         @cc = @initial_cc;
 916         @xh = ();
 917         my $input_format = undef;
 918         my $header_done = 0;
 919         $message = "";
 920         while(<F>) {
 921                 if (!$header_done) {
 922                         if (/^From /) {
 923                                 $input_format = 'mbox';
 924                                 next;
 925                         }
 926                         chomp;
 927                         if (!defined $input_format && /^[-A-Za-z]+:\s/) {
 928                                 $input_format = 'mbox';
 929                         }
 930
 931                         if (defined $input_format && $input_format eq 'mbox') {
 932                                 if (/^Subject:\s+(.*)$/) {
 933                                         $subject = $1;
 934
 935                                 } elsif (/^(Cc|From):\s+(.*)$/) {
 936                                         if (unquote_rfc2047($2) eq $sender) {
 937                                                 next if ($suppress_cc{'self'});
 938                                         }
 939                                         elsif ($1 eq 'From') {
 940                                                 ($author, $author_encoding)
 941                                                   = unquote_rfc2047($2);
 942                                                 next if ($suppress_cc{'author'});
 943                                         } else {
 944                                                 next if ($suppress_cc{'cc'});
 945                                         }
 946                                         printf("(mbox) Adding cc: %s from line '%s'\n",
 947                                                 $2, $_) unless $quiet;
 948                                         push @cc, $2;
 949                                 }
 950                                 elsif (/^Content-type:/i) {
 951                                         $has_content_type = 1;
 952                                         if (/charset="?([^ "]+)/) {
 953                                                 $body_encoding = $1;
 954                                         }
 955                                         push @xh, $_;
 956                                 }
 957                                 elsif (/^Message-Id: (.*)/i) {
 958                                         $message_id = $1;
 959                                 }
 960                                 elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
 961                                         push @xh, $_;
 962                                 }
 963
 964                         } else {
 965                                 # In the traditional
 966                                 # "send lots of email" format,
 967                                 # line 1 = cc
 968                                 # line 2 = subject
 969                                 # So let's support that, too.
 970                                 $input_format = 'lots';
 971                                 if (@cc == 0 && !$suppress_cc{'cc'}) {
 972                                         printf("(non-mbox) Adding cc: %s from line '%s'\n",
 973                                                 $_, $_) unless $quiet;
 974
 975                                         push @cc, $_;
 976
 977                                 } elsif (!defined $subject) {
 978                                         $subject = $_;
 979                                 }
 980                         }
 981
 982                         # A whitespace line will terminate the headers
 983                         if (m/^\s*$/) {
 984                                 $header_done = 1;
 985                         }
 986                 } else {
 987                         $message .=  $_;
 988                         if (/^(Signed-off-by|Cc): (.*)$/i) {
 989                                 next if ($suppress_cc{'sob'});
 990                                 chomp;
 991                                 my $c = $2;
 992                                 chomp $c;
 993                                 next if ($c eq $sender and $suppress_cc{'self'});
 994                                 push @cc, $c;
 995                                 printf("(sob) Adding cc: %s from line '%s'\n",
 996                                         $c, $_) unless $quiet;
 997                         }
 998                 }
 999         }
1000         close F;
1001
1002         if (defined $cc_cmd && !$suppress_cc{'cccmd'}) {
1003                 open(F, "$cc_cmd $t |")
1004                         or die "(cc-cmd) Could not execute '$cc_cmd'";
1005                 while(<F>) {
1006                         my $c = $_;
1007                         $c =~ s/^\s*//g;
1008                         $c =~ s/\n$//g;
1009                         next if ($c eq $sender and $suppress_from);
1010                         push @cc, $c;
1011                         printf("(cc-cmd) Adding cc: %s from: '%s'\n",
1012                                 $c, $cc_cmd) unless $quiet;
1013                 }
1014                 close F
1015                         or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
1016         }
1017
1018         if (defined $author) {
1019                 $message = "From: $author\n\n$message";
1020                 if (defined $author_encoding) {
1021                         if ($has_content_type) {
1022                                 if ($body_encoding eq $author_encoding) {
1023                                         # ok, we already have the right encoding
1024                                 }
1025                                 else {
1026                                         # uh oh, we should re-encode
1027                                 }
1028                         }
1029                         else {
1030                                 push @xh,
1031                                   'MIME-Version: 1.0',
1032                                   "Content-Type: text/plain; charset=$author_encoding",
1033                                   'Content-Transfer-Encoding: 8bit';
1034                         }
1035                 }
1036         }
1037
1038         send_message();
1039
1040         # set up for the next message
1041         if ($chain_reply_to || !defined $reply_to || length($reply_to) == 0) {
1042                 $reply_to = $message_id;
1043                 if (length $references > 0) {
1044                         $references .= "\n $message_id";
1045                 } else {
1046                         $references = "$message_id";
1047                 }
1048         }
1049         $message_id = undef;
1050 }
1051
1052 if ($compose) {
1053         cleanup_compose_files();
1054 }
1055
1056 sub cleanup_compose_files() {
1057         unlink($compose_filename, $compose_filename . ".final");
1058
1059 }
1060
1061 $smtp->quit if $smtp;
1062
1063 sub unique_email_list(@) {
1064         my %seen;
1065         my @emails;
1066
1067         foreach my $entry (@_) {
1068                 if (my $clean = extract_valid_address($entry)) {
1069                         $seen{$clean} ||= 0;
1070                         next if $seen{$clean}++;
1071                         push @emails, $entry;
1072                 } else {
1073                         print STDERR "W: unable to extract a valid address",
1074                                         " from: $entry\n";
1075                 }
1076         }
1077         return @emails;
1078 }
1079
1080 sub validate_patch {
1081         my $fn = shift;
1082         open(my $fh, '<', $fn)
1083                 or die "unable to open $fn: $!\n";
1084         while (my $line = <$fh>) {
1085                 if (length($line) > 998) {
1086                         return "$.: patch contains a line longer than 998 characters";
1087                 }
1088         }
1089         return undef;
1090 }
1091
1092 sub file_has_nonascii {
1093         my $fn = shift;
1094         open(my $fh, '<', $fn)
1095                 or die "unable to open $fn: $!\n";
1096         while (my $line = <$fh>) {
1097                 return 1 if $line =~ /[^[:ascii:]]/;
1098         }
1099         return 0;
1100 }