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 Text::ParseWords;
  24 use Data::Dumper;
  25 use Term::ANSIColor;
  26 use File::Temp qw/ tempdir tempfile /;
  27 use Error qw(:try);
  28 use Git;
  29
  30 Getopt::Long::Configure qw/ pass_through /;
  31
  32 package FakeTerm;
  33 sub new {
  34         my ($class, $reason) = @_;
  35         return bless \$reason, shift;
  36 }
  37 sub readline {
  38         my $self = shift;
  39         die "Cannot use readline on FakeTerm: $$self";
  40 }
  41 package main;
  42
  43
  44 sub usage {
  45         print <<EOT;
  46 git send-email [options] <file | directory | rev-list options >
  47
  48   Composing:
  49     --from                  <str>  * Email From:
  50     --to                    <str>  * Email To:
  51     --cc                    <str>  * Email Cc:
  52     --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
  58   Sending:
  59     --envelope-sender       <str>  * Email envelope sender.
  60     --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
  61                                      is optional. Default 'localhost'.
  62     --smtp-server-port      <int>  * Outgoing SMTP server port.
  63     --smtp-user             <str>  * Username for SMTP-AUTH.
  64     --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
  65     --smtp-encryption       <str>  * tls or ssl; anything else disables.
  66     --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
  67
  68   Automating:
  69     --identity              <str>  * Use the sendemail.<id> options.
  70     --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
  71     --suppress-cc           <str>  * author, self, sob, cc, cccmd, body, bodycc, all.
  72     --[no-]signed-off-by-cc        * Send to Signed-off-by: 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 $have_mail_address = eval { require Mail::Address; 1 };
 129 my $smtp;
 130 my $auth;
 131
 132 sub unique_email_list(@);
 133 sub cleanup_compose_files();
 134
 135 # Variables we fill in automatically, or via prompting:
 136 my (@to,@cc,@initial_cc,@bcclist,@xh,
 137         $initial_reply_to,$initial_subject,@files,
 138         $author,$sender,$smtp_authpass,$annotate,$compose,$time);
 139
 140 my $envelope_sender;
 141
 142 # Example reply to:
 143 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 144
 145 my $repo = eval { Git->repository() };
 146 my @repo = $repo ? ($repo) : ();
 147 my $term = eval {
 148         $ENV{"GIT_SEND_EMAIL_NOTTY"}
 149                 ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
 150                 : new Term::ReadLine 'git-send-email';
 151 };
 152 if ($@) {
 153         $term = new FakeTerm "$@: going non-interactive";
 154 }
 155
 156 # Behavior modification variables
 157 my ($quiet, $dry_run) = (0, 0);
 158 my $format_patch;
 159 my $compose_filename = ($repo ?
 160         tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 161         tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 162
 163
 164 # Handle interactive edition of files.
 165 my $multiedit;
 166 my $editor = $ENV{GIT_EDITOR} || Git::config(@repo, "core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 167 sub do_edit {
 168         if (defined($multiedit) && !$multiedit) {
 169                 map {
 170                         system('sh', '-c', $editor.' "$@"', $editor, $_);
 171                         if (($? & 127) || ($? >> 8)) {
 172                                 die("the editor exited uncleanly, aborting everything");
 173                         }
 174                 } @_;
 175         } else {
 176                 system('sh', '-c', $editor.' "$@"', $editor, @_);
 177                 if (($? & 127) || ($? >> 8)) {
 178                         die("the editor exited uncleanly, aborting everything");
 179                 }
 180         }
 181 }
 182
 183 # Variables with corresponding config settings
 184 my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
 185 my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
 186 my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
 187 my ($validate);
 188 my (@suppress_cc);
 189
 190 my %config_bool_settings = (
 191     "thread" => [\$thread, 1],
 192     "chainreplyto" => [\$chain_reply_to, 1],
 193     "suppressfrom" => [\$suppress_from, undef],
 194     "signedoffbycc" => [\$signed_off_by_cc, undef],
 195     "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 196     "validate" => [\$validate, 1],
 197 );
 198
 199 my %config_settings = (
 200     "smtpserver" => \$smtp_server,
 201     "smtpserverport" => \$smtp_server_port,
 202     "smtpuser" => \$smtp_authuser,
 203     "smtppass" => \$smtp_authpass,
 204     "to" => \@to,
 205     "cc" => \@initial_cc,
 206     "cccmd" => \$cc_cmd,
 207     "aliasfiletype" => \$aliasfiletype,
 208     "bcc" => \@bcclist,
 209     "aliasesfile" => \@alias_files,
 210     "suppresscc" => \@suppress_cc,
 211     "envelopesender" => \$envelope_sender,
 212     "multiedit" => \$multiedit,
 213 );
 214
 215 # Handle Uncouth Termination
 216 sub signal_handler {
 217
 218         # Make text normal
 219         print color("reset"), "\n";
 220
 221         # SMTP password masked
 222         system "stty echo";
 223
 224         # tmp files from --compose
 225         if (-e $compose_filename) {
 226                 print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 227         }
 228         if (-e ($compose_filename . ".final")) {
 229                 print "'$compose_filename.final' contains the composed email.\n"
 230         }
 231
 232         exit;
 233 };
 234
 235 $SIG{TERM} = \&signal_handler;
 236 $SIG{INT}  = \&signal_handler;
 237
 238 # Begin by accumulating all the variables (defined above), that we will end up
 239 # needing, first, from the command line:
 240
 241 my $rc = GetOptions("sender|from=s" => \$sender,
 242                     "in-reply-to=s" => \$initial_reply_to,
 243                     "subject=s" => \$initial_subject,
 244                     "to=s" => \@to,
 245                     "cc=s" => \@initial_cc,
 246                     "bcc=s" => \@bcclist,
 247                     "chain-reply-to!" => \$chain_reply_to,
 248                     "smtp-server=s" => \$smtp_server,
 249                     "smtp-server-port=s" => \$smtp_server_port,
 250                     "smtp-user=s" => \$smtp_authuser,
 251                     "smtp-pass:s" => \$smtp_authpass,
 252                     "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 253                     "smtp-encryption=s" => \$smtp_encryption,
 254                     "identity=s" => \$identity,
 255                     "annotate" => \$annotate,
 256                     "compose" => \$compose,
 257                     "quiet" => \$quiet,
 258                     "cc-cmd=s" => \$cc_cmd,
 259                     "suppress-from!" => \$suppress_from,
 260                     "suppress-cc=s" => \@suppress_cc,
 261                     "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 262                     "dry-run" => \$dry_run,
 263                     "envelope-sender=s" => \$envelope_sender,
 264                     "thread!" => \$thread,
 265                     "validate!" => \$validate,
 266                     "format-patch!" => \$format_patch,
 267          );
 268
 269 unless ($rc) {
 270     usage();
 271 }
 272
 273 die "Cannot run git format-patch from outside a repository\n"
 274         if $format_patch and not $repo;
 275
 276 # Now, let's fill any that aren't set in with defaults:
 277
 278 sub read_config {
 279         my ($prefix) = @_;
 280
 281         foreach my $setting (keys %config_bool_settings) {
 282                 my $target = $config_bool_settings{$setting}->[0];
 283                 $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 284         }
 285
 286         foreach my $setting (keys %config_settings) {
 287                 my $target = $config_settings{$setting};
 288                 if (ref($target) eq "ARRAY") {
 289                         unless (@$target) {
 290                                 my @values = Git::config(@repo, "$prefix.$setting");
 291                                 @$target = @values if (@values && defined $values[0]);
 292                         }
 293                 }
 294                 else {
 295                         $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 296                 }
 297         }
 298
 299         if (!defined $smtp_encryption) {
 300                 my $enc = Git::config(@repo, "$prefix.smtpencryption");
 301                 if (defined $enc) {
 302                         $smtp_encryption = $enc;
 303                 } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 304                         $smtp_encryption = 'ssl';
 305                 }
 306         }
 307 }
 308
 309 # read configuration from [sendemail "$identity"], fall back on [sendemail]
 310 $identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 311 read_config("sendemail.$identity") if (defined $identity);
 312 read_config("sendemail");
 313
 314 # fall back on builtin bool defaults
 315 foreach my $setting (values %config_bool_settings) {
 316         ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 317 }
 318
 319 # 'default' encryption is none -- this only prevents a warning
 320 $smtp_encryption = '' unless (defined $smtp_encryption);
 321
 322 # Set CC suppressions
 323 my(%suppress_cc);
 324 if (@suppress_cc) {
 325         foreach my $entry (@suppress_cc) {
 326                 die "Unknown --suppress-cc field: '$entry'\n"
 327                         unless $entry =~ /^(all|cccmd|cc|author|self|sob|body|bodycc)$/;
 328                 $suppress_cc{$entry} = 1;
 329         }
 330 }
 331
 332 if ($suppress_cc{'all'}) {
 333         foreach my $entry (qw (ccmd cc author self sob body bodycc)) {
 334                 $suppress_cc{$entry} = 1;
 335         }
 336         delete $suppress_cc{'all'};
 337 }
 338
 339 # If explicit old-style ones are specified, they trump --suppress-cc.
 340 $suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 341 $suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 342
 343 if ($suppress_cc{'body'}) {
 344         foreach my $entry (qw (sob bodycc)) {
 345                 $suppress_cc{$entry} = 1;
 346         }
 347         delete $suppress_cc{'body'};
 348 }
 349
 350 # Debugging, print out the suppressions.
 351 if (0) {
 352         print "suppressions:\n";
 353         foreach my $entry (keys %suppress_cc) {
 354                 printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 355         }
 356 }
 357
 358 my ($repoauthor, $repocommitter);
 359 ($repoauthor) = Git::ident_person(@repo, 'author');
 360 ($repocommitter) = Git::ident_person(@repo, 'committer');
 361
 362 # Verify the user input
 363
 364 foreach my $entry (@to) {
 365         die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 366 }
 367
 368 foreach my $entry (@initial_cc) {
 369         die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 370 }
 371
 372 foreach my $entry (@bcclist) {
 373         die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 374 }
 375
 376 sub parse_address_line {
 377         if ($have_mail_address) {
 378                 return map { $_->format } Mail::Address->parse($_[0]);
 379         } else {
 380                 return split_addrs($_[0]);
 381         }
 382 }
 383
 384 sub split_addrs {
 385         return quotewords('\s*,\s*', 1, @_);
 386 }
 387
 388 my %aliases;
 389 my %parse_alias = (
 390         # multiline formats can be supported in the future
 391         mutt => sub { my $fh = shift; while (<$fh>) {
 392                 if (/^\s*alias\s+(\S+)\s+(.*)$/) {
 393                         my ($alias, $addr) = ($1, $2);
 394                         $addr =~ s/#.*$//; # mutt allows # comments
 395                          # commas delimit multiple addresses
 396                         $aliases{$alias} = [ split_addrs($addr) ];
 397                 }}},
 398         mailrc => sub { my $fh = shift; while (<$fh>) {
 399                 if (/^alias\s+(\S+)\s+(.*)$/) {
 400                         # spaces delimit multiple addresses
 401                         $aliases{$1} = [ split(/\s+/, $2) ];
 402                 }}},
 403         pine => sub { my $fh = shift; my $f='\t[^\t]*';
 404                 for (my $x = ''; defined($x); $x = $_) {
 405                         chomp $x;
 406                         $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 407                         $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 408                         $aliases{$1} = [ split_addrs($2) ];
 409                 }},
 410         gnus => sub { my $fh = shift; while (<$fh>) {
 411                 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 412                         $aliases{$1} = [ $2 ];
 413                 }}}
 414 );
 415
 416 if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 417         foreach my $file (@alias_files) {
 418                 open my $fh, '<', $file or die "opening $file: $!\n";
 419                 $parse_alias{$aliasfiletype}->($fh);
 420                 close $fh;
 421         }
 422 }
 423
 424 ($sender) = expand_aliases($sender) if defined $sender;
 425
 426 # returns 1 if the conflict must be solved using it as a format-patch argument
 427 sub check_file_rev_conflict($) {
 428         return unless $repo;
 429         my $f = shift;
 430         try {
 431                 $repo->command('rev-parse', '--verify', '--quiet', $f);
 432                 if (defined($format_patch)) {
 433                         print "foo\n";
 434                         return $format_patch;
 435                 }
 436                 die(<<EOF);
 437 File '$f' exists but it could also be the range of commits
 438 to produce patches for.  Please disambiguate by...
 439
 440     * Saying "./$f" if you mean a file; or
 441     * Giving --format-patch option if you mean a range.
 442 EOF
 443         } catch Git::Error::Command with {
 444                 return 0;
 445         }
 446 }
 447
 448 # Now that all the defaults are set, process the rest of the command line
 449 # arguments and collect up the files that need to be processed.
 450 my @rev_list_opts;
 451 while (defined(my $f = shift @ARGV)) {
 452         if ($f eq "--") {
 453                 push @rev_list_opts, "--", @ARGV;
 454                 @ARGV = ();
 455         } elsif (-d $f and !check_file_rev_conflict($f)) {
 456                 opendir(DH,$f)
 457                         or die "Failed to opendir $f: $!";
 458
 459                 push @files, grep { -f $_ } map { +$f . "/" . $_ }
 460                                 sort readdir(DH);
 461                 closedir(DH);
 462         } elsif ((-f $f or -p $f) and !check_file_rev_conflict($f)) {
 463                 push @files, $f;
 464         } else {
 465                 push @rev_list_opts, $f;
 466         }
 467 }
 468
 469 if (@rev_list_opts) {
 470         die "Cannot run git format-patch from outside a repository\n"
 471                 unless $repo;
 472         push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 473 }
 474
 475 if ($validate) {
 476         foreach my $f (@files) {
 477                 unless (-p $f) {
 478                         my $error = validate_patch($f);
 479                         $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 480                 }
 481         }
 482 }
 483
 484 if (@files) {
 485         unless ($quiet) {
 486                 print $_,"\n" for (@files);
 487         }
 488 } else {
 489         print STDERR "\nNo patch files specified!\n\n";
 490         usage();
 491 }
 492
 493 sub get_patch_subject($) {
 494         my $fn = shift;
 495         open (my $fh, '<', $fn);
 496         while (my $line = <$fh>) {
 497                 next unless ($line =~ /^Subject: (.*)$/);
 498                 close $fh;
 499                 return "GIT: $1\n";
 500         }
 501         close $fh;
 502         die "No subject line in $fn ?";
 503 }
 504
 505 if ($compose) {
 506         # Note that this does not need to be secure, but we will make a small
 507         # effort to have it be unique
 508         open(C,">",$compose_filename)
 509                 or die "Failed to open for writing $compose_filename: $!";
 510
 511
 512         my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 513         my $tpl_subject = $initial_subject || '';
 514         my $tpl_reply_to = $initial_reply_to || '';
 515
 516         print C <<EOT;
 517 From $tpl_sender # This line is ignored.
 518 GIT: Lines beginning in "GIT: " will be removed.
 519 GIT: Consider including an overall diffstat or table of contents
 520 GIT: for the patch you are writing.
 521 GIT:
 522 GIT: Clear the body content if you don't wish to send a summary.
 523 From: $tpl_sender
 524 Subject: $tpl_subject
 525 In-Reply-To: $tpl_reply_to
 526
 527 EOT
 528         for my $f (@files) {
 529                 print C get_patch_subject($f);
 530         }
 531         close(C);
 532
 533         my $editor = $ENV{GIT_EDITOR} || Git::config(@repo, "core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 534
 535         if ($annotate) {
 536                 do_edit($compose_filename, @files);
 537         } else {
 538                 do_edit($compose_filename);
 539         }
 540
 541         open(C2,">",$compose_filename . ".final")
 542                 or die "Failed to open $compose_filename.final : " . $!;
 543
 544         open(C,"<",$compose_filename)
 545                 or die "Failed to open $compose_filename : " . $!;
 546
 547         my $need_8bit_cte = file_has_nonascii($compose_filename);
 548         my $in_body = 0;
 549         my $summary_empty = 1;
 550         while(<C>) {
 551                 next if m/^GIT: /;
 552                 if ($in_body) {
 553                         $summary_empty = 0 unless (/^\n$/);
 554                 } elsif (/^\n$/) {
 555                         $in_body = 1;
 556                         if ($need_8bit_cte) {
 557                                 print C2 "MIME-Version: 1.0\n",
 558                                          "Content-Type: text/plain; ",
 559                                            "charset=utf-8\n",
 560                                          "Content-Transfer-Encoding: 8bit\n";
 561                         }
 562                 } elsif (/^MIME-Version:/i) {
 563                         $need_8bit_cte = 0;
 564                 } elsif (/^Subject:\s*(.+)\s*$/i) {
 565                         $initial_subject = $1;
 566                         my $subject = $initial_subject;
 567                         $_ = "Subject: " .
 568                                 ($subject =~ /[^[:ascii:]]/ ?
 569                                  quote_rfc2047($subject) :
 570                                  $subject) .
 571                                 "\n";
 572                 } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 573                         $initial_reply_to = $1;
 574                         next;
 575                 } elsif (/^From:\s*(.+)\s*$/i) {
 576                         $sender = $1;
 577                         next;
 578                 } elsif (/^(?:To|Cc|Bcc):/i) {
 579                         print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 580                         next;
 581                 }
 582                 print C2 $_;
 583         }
 584         close(C);
 585         close(C2);
 586
 587         if ($summary_empty) {
 588                 print "Summary email is empty, skipping it\n";
 589                 $compose = -1;
 590         }
 591 } elsif ($annotate) {
 592         do_edit(@files);
 593 }
 594
 595 my $prompting = 0;
 596 if (!defined $sender) {
 597         $sender = $repoauthor || $repocommitter || '';
 598
 599         while (1) {
 600                 $_ = $term->readline("Who should the emails appear to be from? [$sender] ");
 601                 last if defined $_;
 602                 print "\n";
 603         }
 604
 605         $sender = $_ if ($_);
 606         print "Emails will be sent from: ", $sender, "\n";
 607         $prompting++;
 608 }
 609
 610 if (!@to) {
 611
 612
 613         while (1) {
 614                 $_ = $term->readline("Who should the emails be sent to? ", "");
 615                 last if defined $_;
 616                 print "\n";
 617         }
 618
 619         my $to = $_;
 620         push @to, parse_address_line($to);
 621         $prompting++;
 622 }
 623
 624 sub expand_aliases {
 625         my @cur = @_;
 626         my @last;
 627         do {
 628                 @last = @cur;
 629                 @cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
 630         } while (join(',',@cur) ne join(',',@last));
 631         return @cur;
 632 }
 633
 634 @to = expand_aliases(@to);
 635 @to = (map { sanitize_address($_) } @to);
 636 @initial_cc = expand_aliases(@initial_cc);
 637 @bcclist = expand_aliases(@bcclist);
 638
 639 if ($thread && !defined $initial_reply_to && $prompting) {
 640         while (1) {
 641                 $_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ", $initial_reply_to);
 642                 last if defined $_;
 643                 print "\n";
 644         }
 645
 646         $initial_reply_to = $_;
 647 }
 648 if (defined $initial_reply_to) {
 649         $initial_reply_to =~ s/^\s*<?//;
 650         $initial_reply_to =~ s/>?\s*$//;
 651         $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 652 }
 653
 654 if (!defined $smtp_server) {
 655         foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 656                 if (-x $_) {
 657                         $smtp_server = $_;
 658                         last;
 659                 }
 660         }
 661         $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 662 }
 663
 664 if ($compose) {
 665         while (1) {
 666                 $_ = $term->readline("Send this email? (y|n) ");
 667                 last if defined $_;
 668                 print "\n";
 669         }
 670
 671         if (uc substr($_,0,1) ne 'Y') {
 672                 cleanup_compose_files();
 673                 exit(0);
 674         }
 675
 676         if ($compose > 0) {
 677                 @files = ($compose_filename . ".final", @files);
 678         }
 679 }
 680
 681 # Variables we set as part of the loop over files
 682 our ($message_id, %mail, $subject, $reply_to, $references, $message);
 683
 684 sub extract_valid_address {
 685         my $address = shift;
 686         my $local_part_regexp = '[^<>"\s@]+';
 687         my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
 688
 689         # check for a local address:
 690         return $address if ($address =~ /^($local_part_regexp)$/);
 691
 692         $address =~ s/^\s*<(.*)>\s*$/$1/;
 693         if ($have_email_valid) {
 694                 return scalar Email::Valid->address($address);
 695         } else {
 696                 # less robust/correct than the monster regexp in Email::Valid,
 697                 # but still does a 99% job, and one less dependency
 698                 $address =~ /($local_part_regexp\@$domain_regexp)/;
 699                 return $1;
 700         }
 701 }
 702
 703 # Usually don't need to change anything below here.
 704
 705 # we make a "fake" message id by taking the current number
 706 # of seconds since the beginning of Unix time and tacking on
 707 # a random number to the end, in case we are called quicker than
 708 # 1 second since the last time we were called.
 709
 710 # We'll setup a template for the message id, using the "from" address:
 711
 712 my ($message_id_stamp, $message_id_serial);
 713 sub make_message_id
 714 {
 715         my $uniq;
 716         if (!defined $message_id_stamp) {
 717                 $message_id_stamp = sprintf("%s-%s", time, $$);
 718                 $message_id_serial = 0;
 719         }
 720         $message_id_serial++;
 721         $uniq = "$message_id_stamp-$message_id_serial";
 722
 723         my $du_part;
 724         for ($sender, $repocommitter, $repoauthor) {
 725                 $du_part = extract_valid_address(sanitize_address($_));
 726                 last if (defined $du_part and $du_part ne '');
 727         }
 728         if (not defined $du_part or $du_part eq '') {
 729                 use Sys::Hostname qw();
 730                 $du_part = 'user@' . Sys::Hostname::hostname();
 731         }
 732         my $message_id_template = "<%s-git-send-email-%s>";
 733         $message_id = sprintf($message_id_template, $uniq, $du_part);
 734         #print "new message id = $message_id\n"; # Was useful for debugging
 735 }
 736
 737
 738
 739 $time = time - scalar $#files;
 740
 741 sub unquote_rfc2047 {
 742         local ($_) = @_;
 743         my $encoding;
 744         if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
 745                 $encoding = $1;
 746                 s/_/ /g;
 747                 s/=([0-9A-F]{2})/chr(hex($1))/eg;
 748         }
 749         return wantarray ? ($_, $encoding) : $_;
 750 }
 751
 752 sub quote_rfc2047 {
 753         local $_ = shift;
 754         my $encoding = shift || 'utf-8';
 755         s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 756         s/(.*)/=\?$encoding\?q\?$1\?=/;
 757         return $_;
 758 }
 759
 760 # use the simplest quoting being able to handle the recipient
 761 sub sanitize_address
 762 {
 763         my ($recipient) = @_;
 764         my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 765
 766         if (not $recipient_name) {
 767                 return "$recipient";
 768         }
 769
 770         # if recipient_name is already quoted, do nothing
 771         if ($recipient_name =~ /^(".*"|=\?utf-8\?q\?.*\?=)$/) {
 772                 return $recipient;
 773         }
 774
 775         # rfc2047 is needed if a non-ascii char is included
 776         if ($recipient_name =~ /[^[:ascii:]]/) {
 777                 $recipient_name = quote_rfc2047($recipient_name);
 778         }
 779
 780         # double quotes are needed if specials or CTLs are included
 781         elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 782                 $recipient_name =~ s/(["\\\r])/\\$1/g;
 783                 $recipient_name = "\"$recipient_name\"";
 784         }
 785
 786         return "$recipient_name $recipient_addr";
 787
 788 }
 789
 790 sub send_message
 791 {
 792         my @recipients = unique_email_list(@to);
 793         @cc = (grep { my $cc = extract_valid_address($_);
 794                       not grep { $cc eq $_ } @recipients
 795                     }
 796                map { sanitize_address($_) }
 797                @cc);
 798         my $to = join (",\n\t", @recipients);
 799         @recipients = unique_email_list(@recipients,@cc,@bcclist);
 800         @recipients = (map { extract_valid_address($_) } @recipients);
 801         my $date = format_2822_time($time++);
 802         my $gitversion = '@@GIT_VERSION@@';
 803         if ($gitversion =~ m/..GIT_VERSION../) {
 804             $gitversion = Git::version();
 805         }
 806
 807         my $cc = join(", ", unique_email_list(@cc));
 808         my $ccline = "";
 809         if ($cc ne '') {
 810                 $ccline = "\nCc: $cc";
 811         }
 812         my $sanitized_sender = sanitize_address($sender);
 813         make_message_id() unless defined($message_id);
 814
 815         my $header = "From: $sanitized_sender
 816 To: $to${ccline}
 817 Subject: $subject
 818 Date: $date
 819 Message-Id: $message_id
 820 X-Mailer: git-send-email $gitversion
 821 ";
 822         if ($thread && $reply_to) {
 823
 824                 $header .= "In-Reply-To: $reply_to\n";
 825                 $header .= "References: $references\n";
 826         }
 827         if (@xh) {
 828                 $header .= join("\n", @xh) . "\n";
 829         }
 830
 831         my @sendmail_parameters = ('-i', @recipients);
 832         my $raw_from = $sanitized_sender;
 833         $raw_from = $envelope_sender if (defined $envelope_sender);
 834         $raw_from = extract_valid_address($raw_from);
 835         unshift (@sendmail_parameters,
 836                         '-f', $raw_from) if(defined $envelope_sender);
 837
 838         if ($dry_run) {
 839                 # We don't want to send the email.
 840         } elsif ($smtp_server =~ m#^/#) {
 841                 my $pid = open my $sm, '|-';
 842                 defined $pid or die $!;
 843                 if (!$pid) {
 844                         exec($smtp_server, @sendmail_parameters) or die $!;
 845                 }
 846                 print $sm "$header\n$message";
 847                 close $sm or die $?;
 848         } else {
 849
 850                 if (!defined $smtp_server) {
 851                         die "The required SMTP server is not properly defined."
 852                 }
 853
 854                 if ($smtp_encryption eq 'ssl') {
 855                         $smtp_server_port ||= 465; # ssmtp
 856                         require Net::SMTP::SSL;
 857                         $smtp ||= Net::SMTP::SSL->new($smtp_server, Port => $smtp_server_port);
 858                 }
 859                 else {
 860                         require Net::SMTP;
 861                         $smtp ||= Net::SMTP->new((defined $smtp_server_port)
 862                                                  ? "$smtp_server:$smtp_server_port"
 863                                                  : $smtp_server);
 864                         if ($smtp_encryption eq 'tls') {
 865                                 require Net::SMTP::SSL;
 866                                 $smtp->command('STARTTLS');
 867                                 $smtp->response();
 868                                 if ($smtp->code == 220) {
 869                                         $smtp = Net::SMTP::SSL->start_SSL($smtp)
 870                                                 or die "STARTTLS failed! ".$smtp->message;
 871                                         $smtp_encryption = '';
 872                                         # Send EHLO again to receive fresh
 873                                         # supported commands
 874                                         $smtp->hello();
 875                                 } else {
 876                                         die "Server does not support STARTTLS! ".$smtp->message;
 877                                 }
 878                         }
 879                 }
 880
 881                 if (!$smtp) {
 882                         die "Unable to initialize SMTP properly.  Is there something wrong with your config?";
 883                 }
 884
 885                 if (defined $smtp_authuser) {
 886
 887                         if (!defined $smtp_authpass) {
 888
 889                                 system "stty -echo";
 890
 891                                 do {
 892                                         print "Password: ";
 893                                         $_ = <STDIN>;
 894                                         print "\n";
 895                                 } while (!defined $_);
 896
 897                                 chomp($smtp_authpass = $_);
 898
 899                                 system "stty echo";
 900                         }
 901
 902                         $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
 903                 }
 904
 905                 $smtp->mail( $raw_from ) or die $smtp->message;
 906                 $smtp->to( @recipients ) or die $smtp->message;
 907                 $smtp->data or die $smtp->message;
 908                 $smtp->datasend("$header\n$message") or die $smtp->message;
 909                 $smtp->dataend() or die $smtp->message;
 910                 $smtp->ok or die "Failed to send $subject\n".$smtp->message;
 911         }
 912         if ($quiet) {
 913                 printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
 914         } else {
 915                 print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
 916                 if ($smtp_server !~ m#^/#) {
 917                         print "Server: $smtp_server\n";
 918                         print "MAIL FROM:<$raw_from>\n";
 919                         print "RCPT TO:".join(',',(map { "<$_>" } @recipients))."\n";
 920                 } else {
 921                         print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
 922                 }
 923                 print $header, "\n";
 924                 if ($smtp) {
 925                         print "Result: ", $smtp->code, ' ',
 926                                 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
 927                 } else {
 928                         print "Result: OK\n";
 929                 }
 930         }
 931 }
 932
 933 $reply_to = $initial_reply_to;
 934 $references = $initial_reply_to || '';
 935 $subject = $initial_subject;
 936
 937 foreach my $t (@files) {
 938         open(F,"<",$t) or die "can't open file $t";
 939
 940         my $author = undef;
 941         my $author_encoding;
 942         my $has_content_type;
 943         my $body_encoding;
 944         @cc = @initial_cc;
 945         @xh = ();
 946         my $input_format = undef;
 947         my @header = ();
 948         $message = "";
 949         # First unfold multiline header fields
 950         while(<F>) {
 951                 last if /^\s*$/;
 952                 if (/^\s+\S/ and @header) {
 953                         chomp($header[$#header]);
 954                         s/^\s+/ /;
 955                         $header[$#header] .= $_;
 956             } else {
 957                         push(@header, $_);
 958                 }
 959         }
 960         # Now parse the header
 961         foreach(@header) {
 962                 if (/^From /) {
 963                         $input_format = 'mbox';
 964                         next;
 965                 }
 966                 chomp;
 967                 if (!defined $input_format && /^[-A-Za-z]+:\s/) {
 968                         $input_format = 'mbox';
 969                 }
 970
 971                 if (defined $input_format && $input_format eq 'mbox') {
 972                         if (/^Subject:\s+(.*)$/) {
 973                                 $subject = $1;
 974                         }
 975                         elsif (/^From:\s+(.*)$/) {
 976                                 ($author, $author_encoding) = unquote_rfc2047($1);
 977                                 next if $suppress_cc{'author'};
 978                                 next if $suppress_cc{'self'} and $author eq $sender;
 979                                 printf("(mbox) Adding cc: %s from line '%s'\n",
 980                                         $1, $_) unless $quiet;
 981                                 push @cc, $1;
 982                         }
 983                         elsif (/^Cc:\s+(.*)$/) {
 984                                 foreach my $addr (parse_address_line($1)) {
 985                                         if (unquote_rfc2047($addr) eq $sender) {
 986                                                 next if ($suppress_cc{'self'});
 987                                         } else {
 988                                                 next if ($suppress_cc{'cc'});
 989                                         }
 990                                         printf("(mbox) Adding cc: %s from line '%s'\n",
 991                                                 $addr, $_) unless $quiet;
 992                                         push @cc, $addr;
 993                                 }
 994                         }
 995                         elsif (/^Content-type:/i) {
 996                                 $has_content_type = 1;
 997                                 if (/charset="?([^ "]+)/) {
 998                                         $body_encoding = $1;
 999                                 }
1000                                 push @xh, $_;
1001                         }
1002                         elsif (/^Message-Id: (.*)/i) {
1003                                 $message_id = $1;
1004                         }
1005                         elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
1006                                 push @xh, $_;
1007                         }
1008
1009                 } else {
1010                         # In the traditional
1011                         # "send lots of email" format,
1012                         # line 1 = cc
1013                         # line 2 = subject
1014                         # So let's support that, too.
1015                         $input_format = 'lots';
1016                         if (@cc == 0 && !$suppress_cc{'cc'}) {
1017                                 printf("(non-mbox) Adding cc: %s from line '%s'\n",
1018                                         $_, $_) unless $quiet;
1019                                 push @cc, $_;
1020                         } elsif (!defined $subject) {
1021                                 $subject = $_;
1022                         }
1023                 }
1024         }
1025         # Now parse the message body
1026         while(<F>) {
1027                 $message .=  $_;
1028                 if (/^(Signed-off-by|Cc): (.*)$/i) {
1029                         chomp;
1030                         my ($what, $c) = ($1, $2);
1031                         chomp $c;
1032                         if ($c eq $sender) {
1033                                 next if ($suppress_cc{'self'});
1034                         } else {
1035                                 next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1036                                 next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1037                         }
1038                         push @cc, $c;
1039                         printf("(body) Adding cc: %s from line '%s'\n",
1040                                 $c, $_) unless $quiet;
1041                 }
1042         }
1043         close F;
1044
1045         if (defined $cc_cmd && !$suppress_cc{'cccmd'}) {
1046                 open(F, "$cc_cmd $t |")
1047                         or die "(cc-cmd) Could not execute '$cc_cmd'";
1048                 while(<F>) {
1049                         my $c = $_;
1050                         $c =~ s/^\s*//g;
1051                         $c =~ s/\n$//g;
1052                         next if ($c eq $sender and $suppress_from);
1053                         push @cc, $c;
1054                         printf("(cc-cmd) Adding cc: %s from: '%s'\n",
1055                                 $c, $cc_cmd) unless $quiet;
1056                 }
1057                 close F
1058                         or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
1059         }
1060
1061         if (defined $author and $author ne $sender) {
1062                 $message = "From: $author\n\n$message";
1063                 if (defined $author_encoding) {
1064                         if ($has_content_type) {
1065                                 if ($body_encoding eq $author_encoding) {
1066                                         # ok, we already have the right encoding
1067                                 }
1068                                 else {
1069                                         # uh oh, we should re-encode
1070                                 }
1071                         }
1072                         else {
1073                                 push @xh,
1074                                   'MIME-Version: 1.0',
1075                                   "Content-Type: text/plain; charset=$author_encoding",
1076                                   'Content-Transfer-Encoding: 8bit';
1077                         }
1078                 }
1079         }
1080
1081         send_message();
1082
1083         # set up for the next message
1084         if ($chain_reply_to || !defined $reply_to || length($reply_to) == 0) {
1085                 $reply_to = $message_id;
1086                 if (length $references > 0) {
1087                         $references .= "\n $message_id";
1088                 } else {
1089                         $references = "$message_id";
1090                 }
1091         }
1092         $message_id = undef;
1093 }
1094
1095 if ($compose) {
1096         cleanup_compose_files();
1097 }
1098
1099 sub cleanup_compose_files() {
1100         unlink($compose_filename, $compose_filename . ".final");
1101
1102 }
1103
1104 $smtp->quit if $smtp;
1105
1106 sub unique_email_list(@) {
1107         my %seen;
1108         my @emails;
1109
1110         foreach my $entry (@_) {
1111                 if (my $clean = extract_valid_address($entry)) {
1112                         $seen{$clean} ||= 0;
1113                         next if $seen{$clean}++;
1114                         push @emails, $entry;
1115                 } else {
1116                         print STDERR "W: unable to extract a valid address",
1117                                         " from: $entry\n";
1118                 }
1119         }
1120         return @emails;
1121 }
1122
1123 sub validate_patch {
1124         my $fn = shift;
1125         open(my $fh, '<', $fn)
1126                 or die "unable to open $fn: $!\n";
1127         while (my $line = <$fh>) {
1128                 if (length($line) > 998) {
1129                         return "$.: patch contains a line longer than 998 characters";
1130                 }
1131         }
1132         return undef;
1133 }
1134
1135 sub file_has_nonascii {
1136         my $fn = shift;
1137         open(my $fh, '<', $fn)
1138                 or die "unable to open $fn: $!\n";
1139         while (my $line = <$fh>) {
1140                 return 1 if $line =~ /[^[:ascii:]]/;
1141         }
1142         return 0;
1143 }