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;
 160
 161 # Handle interactive edition of files.
 162 my $multiedit;
 163 my $editor = $ENV{GIT_EDITOR} || Git::config(@repo, "core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 164 sub do_edit {
 165         if (defined($multiedit) && !$multiedit) {
 166                 map {
 167                         system('sh', '-c', $editor.' "$@"', $editor, $_);
 168                         if (($? & 127) || ($? >> 8)) {
 169                                 die("the editor exited uncleanly, aborting everything");
 170                         }
 171                 } @_;
 172         } else {
 173                 system('sh', '-c', $editor.' "$@"', $editor, @_);
 174                 if (($? & 127) || ($? >> 8)) {
 175                         die("the editor exited uncleanly, aborting everything");
 176                 }
 177         }
 178 }
 179
 180 # Variables with corresponding config settings
 181 my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
 182 my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
 183 my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
 184 my ($validate);
 185 my (@suppress_cc);
 186
 187 my %config_bool_settings = (
 188     "thread" => [\$thread, 1],
 189     "chainreplyto" => [\$chain_reply_to, 1],
 190     "suppressfrom" => [\$suppress_from, undef],
 191     "signedoffbycc" => [\$signed_off_by_cc, undef],
 192     "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 193     "validate" => [\$validate, 1],
 194 );
 195
 196 my %config_settings = (
 197     "smtpserver" => \$smtp_server,
 198     "smtpserverport" => \$smtp_server_port,
 199     "smtpuser" => \$smtp_authuser,
 200     "smtppass" => \$smtp_authpass,
 201     "to" => \@to,
 202     "cc" => \@initial_cc,
 203     "cccmd" => \$cc_cmd,
 204     "aliasfiletype" => \$aliasfiletype,
 205     "bcc" => \@bcclist,
 206     "aliasesfile" => \@alias_files,
 207     "suppresscc" => \@suppress_cc,
 208     "envelopesender" => \$envelope_sender,
 209     "multiedit" => \$multiedit,
 210 );
 211
 212 # Handle Uncouth Termination
 213 sub signal_handler {
 214
 215         # Make text normal
 216         print color("reset"), "\n";
 217
 218         # SMTP password masked
 219         system "stty echo";
 220
 221         # tmp files from --compose
 222         if (defined $compose_filename) {
 223                 if (-e $compose_filename) {
 224                         print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 225                 }
 226                 if (-e ($compose_filename . ".final")) {
 227                         print "'$compose_filename.final' contains the composed email.\n"
 228                 }
 229         }
 230
 231         exit;
 232 };
 233
 234 $SIG{TERM} = \&signal_handler;
 235 $SIG{INT}  = \&signal_handler;
 236
 237 # Begin by accumulating all the variables (defined above), that we will end up
 238 # needing, first, from the command line:
 239
 240 my $rc = GetOptions("sender|from=s" => \$sender,
 241                     "in-reply-to=s" => \$initial_reply_to,
 242                     "subject=s" => \$initial_subject,
 243                     "to=s" => \@to,
 244                     "cc=s" => \@initial_cc,
 245                     "bcc=s" => \@bcclist,
 246                     "chain-reply-to!" => \$chain_reply_to,
 247                     "smtp-server=s" => \$smtp_server,
 248                     "smtp-server-port=s" => \$smtp_server_port,
 249                     "smtp-user=s" => \$smtp_authuser,
 250                     "smtp-pass:s" => \$smtp_authpass,
 251                     "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 252                     "smtp-encryption=s" => \$smtp_encryption,
 253                     "identity=s" => \$identity,
 254                     "annotate" => \$annotate,
 255                     "compose" => \$compose,
 256                     "quiet" => \$quiet,
 257                     "cc-cmd=s" => \$cc_cmd,
 258                     "suppress-from!" => \$suppress_from,
 259                     "suppress-cc=s" => \@suppress_cc,
 260                     "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 261                     "dry-run" => \$dry_run,
 262                     "envelope-sender=s" => \$envelope_sender,
 263                     "thread!" => \$thread,
 264                     "validate!" => \$validate,
 265                     "format-patch!" => \$format_patch,
 266          );
 267
 268 unless ($rc) {
 269     usage();
 270 }
 271
 272 die "Cannot run git format-patch from outside a repository\n"
 273         if $format_patch and not $repo;
 274
 275 # Now, let's fill any that aren't set in with defaults:
 276
 277 sub read_config {
 278         my ($prefix) = @_;
 279
 280         foreach my $setting (keys %config_bool_settings) {
 281                 my $target = $config_bool_settings{$setting}->[0];
 282                 $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 283         }
 284
 285         foreach my $setting (keys %config_settings) {
 286                 my $target = $config_settings{$setting};
 287                 if (ref($target) eq "ARRAY") {
 288                         unless (@$target) {
 289                                 my @values = Git::config(@repo, "$prefix.$setting");
 290                                 @$target = @values if (@values && defined $values[0]);
 291                         }
 292                 }
 293                 else {
 294                         $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 295                 }
 296         }
 297
 298         if (!defined $smtp_encryption) {
 299                 my $enc = Git::config(@repo, "$prefix.smtpencryption");
 300                 if (defined $enc) {
 301                         $smtp_encryption = $enc;
 302                 } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 303                         $smtp_encryption = 'ssl';
 304                 }
 305         }
 306 }
 307
 308 # read configuration from [sendemail "$identity"], fall back on [sendemail]
 309 $identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 310 read_config("sendemail.$identity") if (defined $identity);
 311 read_config("sendemail");
 312
 313 # fall back on builtin bool defaults
 314 foreach my $setting (values %config_bool_settings) {
 315         ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 316 }
 317
 318 # 'default' encryption is none -- this only prevents a warning
 319 $smtp_encryption = '' unless (defined $smtp_encryption);
 320
 321 # Set CC suppressions
 322 my(%suppress_cc);
 323 if (@suppress_cc) {
 324         foreach my $entry (@suppress_cc) {
 325                 die "Unknown --suppress-cc field: '$entry'\n"
 326                         unless $entry =~ /^(all|cccmd|cc|author|self|sob|body|bodycc)$/;
 327                 $suppress_cc{$entry} = 1;
 328         }
 329 }
 330
 331 if ($suppress_cc{'all'}) {
 332         foreach my $entry (qw (ccmd cc author self sob body bodycc)) {
 333                 $suppress_cc{$entry} = 1;
 334         }
 335         delete $suppress_cc{'all'};
 336 }
 337
 338 # If explicit old-style ones are specified, they trump --suppress-cc.
 339 $suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 340 $suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 341
 342 if ($suppress_cc{'body'}) {
 343         foreach my $entry (qw (sob bodycc)) {
 344                 $suppress_cc{$entry} = 1;
 345         }
 346         delete $suppress_cc{'body'};
 347 }
 348
 349 # Debugging, print out the suppressions.
 350 if (0) {
 351         print "suppressions:\n";
 352         foreach my $entry (keys %suppress_cc) {
 353                 printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 354         }
 355 }
 356
 357 my ($repoauthor, $repocommitter);
 358 ($repoauthor) = Git::ident_person(@repo, 'author');
 359 ($repocommitter) = Git::ident_person(@repo, 'committer');
 360
 361 # Verify the user input
 362
 363 foreach my $entry (@to) {
 364         die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 365 }
 366
 367 foreach my $entry (@initial_cc) {
 368         die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 369 }
 370
 371 foreach my $entry (@bcclist) {
 372         die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 373 }
 374
 375 sub parse_address_line {
 376         if ($have_mail_address) {
 377                 return map { $_->format } Mail::Address->parse($_[0]);
 378         } else {
 379                 return split_addrs($_[0]);
 380         }
 381 }
 382
 383 sub split_addrs {
 384         return quotewords('\s*,\s*', 1, @_);
 385 }
 386
 387 my %aliases;
 388 my %parse_alias = (
 389         # multiline formats can be supported in the future
 390         mutt => sub { my $fh = shift; while (<$fh>) {
 391                 if (/^\s*alias\s+(\S+)\s+(.*)$/) {
 392                         my ($alias, $addr) = ($1, $2);
 393                         $addr =~ s/#.*$//; # mutt allows # comments
 394                          # commas delimit multiple addresses
 395                         $aliases{$alias} = [ split_addrs($addr) ];
 396                 }}},
 397         mailrc => sub { my $fh = shift; while (<$fh>) {
 398                 if (/^alias\s+(\S+)\s+(.*)$/) {
 399                         # spaces delimit multiple addresses
 400                         $aliases{$1} = [ split(/\s+/, $2) ];
 401                 }}},
 402         pine => sub { my $fh = shift; my $f='\t[^\t]*';
 403                 for (my $x = ''; defined($x); $x = $_) {
 404                         chomp $x;
 405                         $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 406                         $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 407                         $aliases{$1} = [ split_addrs($2) ];
 408                 }},
 409         gnus => sub { my $fh = shift; while (<$fh>) {
 410                 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 411                         $aliases{$1} = [ $2 ];
 412                 }}}
 413 );
 414
 415 if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 416         foreach my $file (@alias_files) {
 417                 open my $fh, '<', $file or die "opening $file: $!\n";
 418                 $parse_alias{$aliasfiletype}->($fh);
 419                 close $fh;
 420         }
 421 }
 422
 423 ($sender) = expand_aliases($sender) if defined $sender;
 424
 425 # returns 1 if the conflict must be solved using it as a format-patch argument
 426 sub check_file_rev_conflict($) {
 427         return unless $repo;
 428         my $f = shift;
 429         try {
 430                 $repo->command('rev-parse', '--verify', '--quiet', $f);
 431                 if (defined($format_patch)) {
 432                         print "foo\n";
 433                         return $format_patch;
 434                 }
 435                 die(<<EOF);
 436 File '$f' exists but it could also be the range of commits
 437 to produce patches for.  Please disambiguate by...
 438
 439     * Saying "./$f" if you mean a file; or
 440     * Giving --format-patch option if you mean a range.
 441 EOF
 442         } catch Git::Error::Command with {
 443                 return 0;
 444         }
 445 }
 446
 447 # Now that all the defaults are set, process the rest of the command line
 448 # arguments and collect up the files that need to be processed.
 449 my @rev_list_opts;
 450 while (defined(my $f = shift @ARGV)) {
 451         if ($f eq "--") {
 452                 push @rev_list_opts, "--", @ARGV;
 453                 @ARGV = ();
 454         } elsif (-d $f and !check_file_rev_conflict($f)) {
 455                 opendir(DH,$f)
 456                         or die "Failed to opendir $f: $!";
 457
 458                 push @files, grep { -f $_ } map { +$f . "/" . $_ }
 459                                 sort readdir(DH);
 460                 closedir(DH);
 461         } elsif ((-f $f or -p $f) and !check_file_rev_conflict($f)) {
 462                 push @files, $f;
 463         } else {
 464                 push @rev_list_opts, $f;
 465         }
 466 }
 467
 468 if (@rev_list_opts) {
 469         die "Cannot run git format-patch from outside a repository\n"
 470                 unless $repo;
 471         push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 472 }
 473
 474 if ($validate) {
 475         foreach my $f (@files) {
 476                 unless (-p $f) {
 477                         my $error = validate_patch($f);
 478                         $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 479                 }
 480         }
 481 }
 482
 483 if (@files) {
 484         unless ($quiet) {
 485                 print $_,"\n" for (@files);
 486         }
 487 } else {
 488         print STDERR "\nNo patch files specified!\n\n";
 489         usage();
 490 }
 491
 492 sub get_patch_subject($) {
 493         my $fn = shift;
 494         open (my $fh, '<', $fn);
 495         while (my $line = <$fh>) {
 496                 next unless ($line =~ /^Subject: (.*)$/);
 497                 close $fh;
 498                 return "GIT: $1\n";
 499         }
 500         close $fh;
 501         die "No subject line in $fn ?";
 502 }
 503
 504 if ($compose) {
 505         # Note that this does not need to be secure, but we will make a small
 506         # effort to have it be unique
 507         $compose_filename = ($repo ?
 508                 tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 509                 tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 510         open(C,">",$compose_filename)
 511                 or die "Failed to open for writing $compose_filename: $!";
 512
 513
 514         my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 515         my $tpl_subject = $initial_subject || '';
 516         my $tpl_reply_to = $initial_reply_to || '';
 517
 518         print C <<EOT;
 519 From $tpl_sender # This line is ignored.
 520 GIT: Lines beginning in "GIT: " will be removed.
 521 GIT: Consider including an overall diffstat or table of contents
 522 GIT: for the patch you are writing.
 523 GIT:
 524 GIT: Clear the body content if you don't wish to send a summary.
 525 From: $tpl_sender
 526 Subject: $tpl_subject
 527 In-Reply-To: $tpl_reply_to
 528
 529 EOT
 530         for my $f (@files) {
 531                 print C get_patch_subject($f);
 532         }
 533         close(C);
 534
 535         my $editor = $ENV{GIT_EDITOR} || Git::config(@repo, "core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 536
 537         if ($annotate) {
 538                 do_edit($compose_filename, @files);
 539         } else {
 540                 do_edit($compose_filename);
 541         }
 542
 543         open(C2,">",$compose_filename . ".final")
 544                 or die "Failed to open $compose_filename.final : " . $!;
 545
 546         open(C,"<",$compose_filename)
 547                 or die "Failed to open $compose_filename : " . $!;
 548
 549         my $need_8bit_cte = file_has_nonascii($compose_filename);
 550         my $in_body = 0;
 551         my $summary_empty = 1;
 552         while(<C>) {
 553                 next if m/^GIT: /;
 554                 if ($in_body) {
 555                         $summary_empty = 0 unless (/^\n$/);
 556                 } elsif (/^\n$/) {
 557                         $in_body = 1;
 558                         if ($need_8bit_cte) {
 559                                 print C2 "MIME-Version: 1.0\n",
 560                                          "Content-Type: text/plain; ",
 561                                            "charset=utf-8\n",
 562                                          "Content-Transfer-Encoding: 8bit\n";
 563                         }
 564                 } elsif (/^MIME-Version:/i) {
 565                         $need_8bit_cte = 0;
 566                 } elsif (/^Subject:\s*(.+)\s*$/i) {
 567                         $initial_subject = $1;
 568                         my $subject = $initial_subject;
 569                         $_ = "Subject: " .
 570                                 ($subject =~ /[^[:ascii:]]/ ?
 571                                  quote_rfc2047($subject) :
 572                                  $subject) .
 573                                 "\n";
 574                 } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 575                         $initial_reply_to = $1;
 576                         next;
 577                 } elsif (/^From:\s*(.+)\s*$/i) {
 578                         $sender = $1;
 579                         next;
 580                 } elsif (/^(?:To|Cc|Bcc):/i) {
 581                         print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 582                         next;
 583                 }
 584                 print C2 $_;
 585         }
 586         close(C);
 587         close(C2);
 588
 589         if ($summary_empty) {
 590                 print "Summary email is empty, skipping it\n";
 591                 $compose = -1;
 592         }
 593 } elsif ($annotate) {
 594         do_edit(@files);
 595 }
 596
 597 my $prompting = 0;
 598 if (!defined $sender) {
 599         $sender = $repoauthor || $repocommitter || '';
 600
 601         while (1) {
 602                 $_ = $term->readline("Who should the emails appear to be from? [$sender] ");
 603                 last if defined $_;
 604                 print "\n";
 605         }
 606
 607         $sender = $_ if ($_);
 608         print "Emails will be sent from: ", $sender, "\n";
 609         $prompting++;
 610 }
 611
 612 if (!@to) {
 613
 614
 615         while (1) {
 616                 $_ = $term->readline("Who should the emails be sent to? ", "");
 617                 last if defined $_;
 618                 print "\n";
 619         }
 620
 621         my $to = $_;
 622         push @to, parse_address_line($to);
 623         $prompting++;
 624 }
 625
 626 sub expand_aliases {
 627         my @cur = @_;
 628         my @last;
 629         do {
 630                 @last = @cur;
 631                 @cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
 632         } while (join(',',@cur) ne join(',',@last));
 633         return @cur;
 634 }
 635
 636 @to = expand_aliases(@to);
 637 @to = (map { sanitize_address($_) } @to);
 638 @initial_cc = expand_aliases(@initial_cc);
 639 @bcclist = expand_aliases(@bcclist);
 640
 641 if ($thread && !defined $initial_reply_to && $prompting) {
 642         while (1) {
 643                 $_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ", $initial_reply_to);
 644                 last if defined $_;
 645                 print "\n";
 646         }
 647
 648         $initial_reply_to = $_;
 649 }
 650 if (defined $initial_reply_to) {
 651         $initial_reply_to =~ s/^\s*<?//;
 652         $initial_reply_to =~ s/>?\s*$//;
 653         $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 654 }
 655
 656 if (!defined $smtp_server) {
 657         foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 658                 if (-x $_) {
 659                         $smtp_server = $_;
 660                         last;
 661                 }
 662         }
 663         $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 664 }
 665
 666 if ($compose) {
 667         while (1) {
 668                 $_ = $term->readline("Send this email? (y|n) ");
 669                 last if defined $_;
 670                 print "\n";
 671         }
 672
 673         if (uc substr($_,0,1) ne 'Y') {
 674                 cleanup_compose_files();
 675                 exit(0);
 676         }
 677
 678         if ($compose > 0) {
 679                 @files = ($compose_filename . ".final", @files);
 680         }
 681 }
 682
 683 # Variables we set as part of the loop over files
 684 our ($message_id, %mail, $subject, $reply_to, $references, $message);
 685
 686 sub extract_valid_address {
 687         my $address = shift;
 688         my $local_part_regexp = '[^<>"\s@]+';
 689         my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
 690
 691         # check for a local address:
 692         return $address if ($address =~ /^($local_part_regexp)$/);
 693
 694         $address =~ s/^\s*<(.*)>\s*$/$1/;
 695         if ($have_email_valid) {
 696                 return scalar Email::Valid->address($address);
 697         } else {
 698                 # less robust/correct than the monster regexp in Email::Valid,
 699                 # but still does a 99% job, and one less dependency
 700                 $address =~ /($local_part_regexp\@$domain_regexp)/;
 701                 return $1;
 702         }
 703 }
 704
 705 # Usually don't need to change anything below here.
 706
 707 # we make a "fake" message id by taking the current number
 708 # of seconds since the beginning of Unix time and tacking on
 709 # a random number to the end, in case we are called quicker than
 710 # 1 second since the last time we were called.
 711
 712 # We'll setup a template for the message id, using the "from" address:
 713
 714 my ($message_id_stamp, $message_id_serial);
 715 sub make_message_id
 716 {
 717         my $uniq;
 718         if (!defined $message_id_stamp) {
 719                 $message_id_stamp = sprintf("%s-%s", time, $$);
 720                 $message_id_serial = 0;
 721         }
 722         $message_id_serial++;
 723         $uniq = "$message_id_stamp-$message_id_serial";
 724
 725         my $du_part;
 726         for ($sender, $repocommitter, $repoauthor) {
 727                 $du_part = extract_valid_address(sanitize_address($_));
 728                 last if (defined $du_part and $du_part ne '');
 729         }
 730         if (not defined $du_part or $du_part eq '') {
 731                 use Sys::Hostname qw();
 732                 $du_part = 'user@' . Sys::Hostname::hostname();
 733         }
 734         my $message_id_template = "<%s-git-send-email-%s>";
 735         $message_id = sprintf($message_id_template, $uniq, $du_part);
 736         #print "new message id = $message_id\n"; # Was useful for debugging
 737 }
 738
 739
 740
 741 $time = time - scalar $#files;
 742
 743 sub unquote_rfc2047 {
 744         local ($_) = @_;
 745         my $encoding;
 746         if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
 747                 $encoding = $1;
 748                 s/_/ /g;
 749                 s/=([0-9A-F]{2})/chr(hex($1))/eg;
 750         }
 751         return wantarray ? ($_, $encoding) : $_;
 752 }
 753
 754 sub quote_rfc2047 {
 755         local $_ = shift;
 756         my $encoding = shift || 'utf-8';
 757         s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 758         s/(.*)/=\?$encoding\?q\?$1\?=/;
 759         return $_;
 760 }
 761
 762 # use the simplest quoting being able to handle the recipient
 763 sub sanitize_address
 764 {
 765         my ($recipient) = @_;
 766         my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 767
 768         if (not $recipient_name) {
 769                 return "$recipient";
 770         }
 771
 772         # if recipient_name is already quoted, do nothing
 773         if ($recipient_name =~ /^(".*"|=\?utf-8\?q\?.*\?=)$/) {
 774                 return $recipient;
 775         }
 776
 777         # rfc2047 is needed if a non-ascii char is included
 778         if ($recipient_name =~ /[^[:ascii:]]/) {
 779                 $recipient_name = quote_rfc2047($recipient_name);
 780         }
 781
 782         # double quotes are needed if specials or CTLs are included
 783         elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 784                 $recipient_name =~ s/(["\\\r])/\\$1/g;
 785                 $recipient_name = "\"$recipient_name\"";
 786         }
 787
 788         return "$recipient_name $recipient_addr";
 789
 790 }
 791
 792 sub send_message
 793 {
 794         my @recipients = unique_email_list(@to);
 795         @cc = (grep { my $cc = extract_valid_address($_);
 796                       not grep { $cc eq $_ } @recipients
 797                     }
 798                map { sanitize_address($_) }
 799                @cc);
 800         my $to = join (",\n\t", @recipients);
 801         @recipients = unique_email_list(@recipients,@cc,@bcclist);
 802         @recipients = (map { extract_valid_address($_) } @recipients);
 803         my $date = format_2822_time($time++);
 804         my $gitversion = '@@GIT_VERSION@@';
 805         if ($gitversion =~ m/..GIT_VERSION../) {
 806             $gitversion = Git::version();
 807         }
 808
 809         my $cc = join(", ", unique_email_list(@cc));
 810         my $ccline = "";
 811         if ($cc ne '') {
 812                 $ccline = "\nCc: $cc";
 813         }
 814         my $sanitized_sender = sanitize_address($sender);
 815         make_message_id() unless defined($message_id);
 816
 817         my $header = "From: $sanitized_sender
 818 To: $to${ccline}
 819 Subject: $subject
 820 Date: $date
 821 Message-Id: $message_id
 822 X-Mailer: git-send-email $gitversion
 823 ";
 824         if ($reply_to) {
 825
 826                 $header .= "In-Reply-To: $reply_to\n";
 827                 $header .= "References: $references\n";
 828         }
 829         if (@xh) {
 830                 $header .= join("\n", @xh) . "\n";
 831         }
 832
 833         my @sendmail_parameters = ('-i', @recipients);
 834         my $raw_from = $sanitized_sender;
 835         $raw_from = $envelope_sender if (defined $envelope_sender);
 836         $raw_from = extract_valid_address($raw_from);
 837         unshift (@sendmail_parameters,
 838                         '-f', $raw_from) if(defined $envelope_sender);
 839
 840         if ($dry_run) {
 841                 # We don't want to send the email.
 842         } elsif ($smtp_server =~ m#^/#) {
 843                 my $pid = open my $sm, '|-';
 844                 defined $pid or die $!;
 845                 if (!$pid) {
 846                         exec($smtp_server, @sendmail_parameters) or die $!;
 847                 }
 848                 print $sm "$header\n$message";
 849                 close $sm or die $?;
 850         } else {
 851
 852                 if (!defined $smtp_server) {
 853                         die "The required SMTP server is not properly defined."
 854                 }
 855
 856                 if ($smtp_encryption eq 'ssl') {
 857                         $smtp_server_port ||= 465; # ssmtp
 858                         require Net::SMTP::SSL;
 859                         $smtp ||= Net::SMTP::SSL->new($smtp_server, Port => $smtp_server_port);
 860                 }
 861                 else {
 862                         require Net::SMTP;
 863                         $smtp ||= Net::SMTP->new((defined $smtp_server_port)
 864                                                  ? "$smtp_server:$smtp_server_port"
 865                                                  : $smtp_server);
 866                         if ($smtp_encryption eq 'tls') {
 867                                 require Net::SMTP::SSL;
 868                                 $smtp->command('STARTTLS');
 869                                 $smtp->response();
 870                                 if ($smtp->code == 220) {
 871                                         $smtp = Net::SMTP::SSL->start_SSL($smtp)
 872                                                 or die "STARTTLS failed! ".$smtp->message;
 873                                         $smtp_encryption = '';
 874                                         # Send EHLO again to receive fresh
 875                                         # supported commands
 876                                         $smtp->hello();
 877                                 } else {
 878                                         die "Server does not support STARTTLS! ".$smtp->message;
 879                                 }
 880                         }
 881                 }
 882
 883                 if (!$smtp) {
 884                         die "Unable to initialize SMTP properly.  Is there something wrong with your config?";
 885                 }
 886
 887                 if (defined $smtp_authuser) {
 888
 889                         if (!defined $smtp_authpass) {
 890
 891                                 system "stty -echo";
 892
 893                                 do {
 894                                         print "Password: ";
 895                                         $_ = <STDIN>;
 896                                         print "\n";
 897                                 } while (!defined $_);
 898
 899                                 chomp($smtp_authpass = $_);
 900
 901                                 system "stty echo";
 902                         }
 903
 904                         $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
 905                 }
 906
 907                 $smtp->mail( $raw_from ) or die $smtp->message;
 908                 $smtp->to( @recipients ) or die $smtp->message;
 909                 $smtp->data or die $smtp->message;
 910                 $smtp->datasend("$header\n$message") or die $smtp->message;
 911                 $smtp->dataend() or die $smtp->message;
 912                 $smtp->ok or die "Failed to send $subject\n".$smtp->message;
 913         }
 914         if ($quiet) {
 915                 printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
 916         } else {
 917                 print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
 918                 if ($smtp_server !~ m#^/#) {
 919                         print "Server: $smtp_server\n";
 920                         print "MAIL FROM:<$raw_from>\n";
 921                         print "RCPT TO:".join(',',(map { "<$_>" } @recipients))."\n";
 922                 } else {
 923                         print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
 924                 }
 925                 print $header, "\n";
 926                 if ($smtp) {
 927                         print "Result: ", $smtp->code, ' ',
 928                                 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
 929                 } else {
 930                         print "Result: OK\n";
 931                 }
 932         }
 933 }
 934
 935 $reply_to = $initial_reply_to;
 936 $references = $initial_reply_to || '';
 937 $subject = $initial_subject;
 938
 939 foreach my $t (@files) {
 940         open(F,"<",$t) or die "can't open file $t";
 941
 942         my $author = undef;
 943         my $author_encoding;
 944         my $has_content_type;
 945         my $body_encoding;
 946         @cc = @initial_cc;
 947         @xh = ();
 948         my $input_format = undef;
 949         my @header = ();
 950         $message = "";
 951         # First unfold multiline header fields
 952         while(<F>) {
 953                 last if /^\s*$/;
 954                 if (/^\s+\S/ and @header) {
 955                         chomp($header[$#header]);
 956                         s/^\s+/ /;
 957                         $header[$#header] .= $_;
 958             } else {
 959                         push(@header, $_);
 960                 }
 961         }
 962         # Now parse the header
 963         foreach(@header) {
 964                 if (/^From /) {
 965                         $input_format = 'mbox';
 966                         next;
 967                 }
 968                 chomp;
 969                 if (!defined $input_format && /^[-A-Za-z]+:\s/) {
 970                         $input_format = 'mbox';
 971                 }
 972
 973                 if (defined $input_format && $input_format eq 'mbox') {
 974                         if (/^Subject:\s+(.*)$/) {
 975                                 $subject = $1;
 976                         }
 977                         elsif (/^From:\s+(.*)$/) {
 978                                 ($author, $author_encoding) = unquote_rfc2047($1);
 979                                 next if $suppress_cc{'author'};
 980                                 next if $suppress_cc{'self'} and $author eq $sender;
 981                                 printf("(mbox) Adding cc: %s from line '%s'\n",
 982                                         $1, $_) unless $quiet;
 983                                 push @cc, $1;
 984                         }
 985                         elsif (/^Cc:\s+(.*)$/) {
 986                                 foreach my $addr (parse_address_line($1)) {
 987                                         if (unquote_rfc2047($addr) eq $sender) {
 988                                                 next if ($suppress_cc{'self'});
 989                                         } else {
 990                                                 next if ($suppress_cc{'cc'});
 991                                         }
 992                                         printf("(mbox) Adding cc: %s from line '%s'\n",
 993                                                 $addr, $_) unless $quiet;
 994                                         push @cc, $addr;
 995                                 }
 996                         }
 997                         elsif (/^Content-type:/i) {
 998                                 $has_content_type = 1;
 999                                 if (/charset="?([^ "]+)/) {
1000                                         $body_encoding = $1;
1001                                 }
1002                                 push @xh, $_;
1003                         }
1004                         elsif (/^Message-Id: (.*)/i) {
1005                                 $message_id = $1;
1006                         }
1007                         elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
1008                                 push @xh, $_;
1009                         }
1010
1011                 } else {
1012                         # In the traditional
1013                         # "send lots of email" format,
1014                         # line 1 = cc
1015                         # line 2 = subject
1016                         # So let's support that, too.
1017                         $input_format = 'lots';
1018                         if (@cc == 0 && !$suppress_cc{'cc'}) {
1019                                 printf("(non-mbox) Adding cc: %s from line '%s'\n",
1020                                         $_, $_) unless $quiet;
1021                                 push @cc, $_;
1022                         } elsif (!defined $subject) {
1023                                 $subject = $_;
1024                         }
1025                 }
1026         }
1027         # Now parse the message body
1028         while(<F>) {
1029                 $message .=  $_;
1030                 if (/^(Signed-off-by|Cc): (.*)$/i) {
1031                         chomp;
1032                         my ($what, $c) = ($1, $2);
1033                         chomp $c;
1034                         if ($c eq $sender) {
1035                                 next if ($suppress_cc{'self'});
1036                         } else {
1037                                 next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1038                                 next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1039                         }
1040                         push @cc, $c;
1041                         printf("(body) Adding cc: %s from line '%s'\n",
1042                                 $c, $_) unless $quiet;
1043                 }
1044         }
1045         close F;
1046
1047         if (defined $cc_cmd && !$suppress_cc{'cccmd'}) {
1048                 open(F, "$cc_cmd $t |")
1049                         or die "(cc-cmd) Could not execute '$cc_cmd'";
1050                 while(<F>) {
1051                         my $c = $_;
1052                         $c =~ s/^\s*//g;
1053                         $c =~ s/\n$//g;
1054                         next if ($c eq $sender and $suppress_from);
1055                         push @cc, $c;
1056                         printf("(cc-cmd) Adding cc: %s from: '%s'\n",
1057                                 $c, $cc_cmd) unless $quiet;
1058                 }
1059                 close F
1060                         or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
1061         }
1062
1063         if (defined $author and $author ne $sender) {
1064                 $message = "From: $author\n\n$message";
1065                 if (defined $author_encoding) {
1066                         if ($has_content_type) {
1067                                 if ($body_encoding eq $author_encoding) {
1068                                         # ok, we already have the right encoding
1069                                 }
1070                                 else {
1071                                         # uh oh, we should re-encode
1072                                 }
1073                         }
1074                         else {
1075                                 push @xh,
1076                                   'MIME-Version: 1.0',
1077                                   "Content-Type: text/plain; charset=$author_encoding",
1078                                   'Content-Transfer-Encoding: 8bit';
1079                         }
1080                 }
1081         }
1082
1083         send_message();
1084
1085         # set up for the next message
1086         if ($chain_reply_to || !defined $reply_to || length($reply_to) == 0) {
1087                 $reply_to = $message_id;
1088                 if (length $references > 0) {
1089                         $references .= "\n $message_id";
1090                 } else {
1091                         $references = "$message_id";
1092                 }
1093         }
1094         $message_id = undef;
1095 }
1096
1097 if ($compose) {
1098         cleanup_compose_files();
1099 }
1100
1101 sub cleanup_compose_files() {
1102         unlink($compose_filename, $compose_filename . ".final");
1103
1104 }
1105
1106 $smtp->quit if $smtp;
1107
1108 sub unique_email_list(@) {
1109         my %seen;
1110         my @emails;
1111
1112         foreach my $entry (@_) {
1113                 if (my $clean = extract_valid_address($entry)) {
1114                         $seen{$clean} ||= 0;
1115                         next if $seen{$clean}++;
1116                         push @emails, $entry;
1117                 } else {
1118                         print STDERR "W: unable to extract a valid address",
1119                                         " from: $entry\n";
1120                 }
1121         }
1122         return @emails;
1123 }
1124
1125 sub validate_patch {
1126         my $fn = shift;
1127         open(my $fh, '<', $fn)
1128                 or die "unable to open $fn: $!\n";
1129         while (my $line = <$fh>) {
1130                 if (length($line) > 998) {
1131                         return "$.: patch contains a line longer than 998 characters";
1132                 }
1133         }
1134         return undef;
1135 }
1136
1137 sub file_has_nonascii {
1138         my $fn = shift;
1139         open(my $fh, '<', $fn)
1140                 or die "unable to open $fn: $!\n";
1141         while (my $line = <$fh>) {
1142                 return 1 if $line =~ /[^[:ascii:]]/;
1143         }
1144         return 0;
1145 }