git-send-email.perlon commit status: don't require the repository to be writable (ab68545)
   1#!/usr/bin/perl -w
   2#
   3# Copyright 2002,2005 Greg Kroah-Hartman <greg@kroah.com>
   4# Copyright 2005 Ryan Anderson <ryan@michonline.com>
   5#
   6# GPL v2 (See COPYING)
   7#
   8# Ported to support git "mbox" format files by Ryan Anderson <ryan@michonline.com>
   9#
  10# Sends a collection of emails to the given email addresses, disturbingly fast.
  11#
  12# Supports two formats:
  13# 1. mbox format files (ignoring most headers and MIME formatting - this is designed for sending patches)
  14# 2. The original format support by Greg's script:
  15#    first line of the message is who to CC,
  16#    and second line is the subject of the message.
  17#
  18
  19use strict;
  20use warnings;
  21use Term::ReadLine;
  22use Getopt::Long;
  23use Text::ParseWords;
  24use Data::Dumper;
  25use Term::ANSIColor;
  26use File::Temp qw/ tempdir tempfile /;
  27use Error qw(:try);
  28use Git;
  29
  30Getopt::Long::Configure qw/ pass_through /;
  31
  32package FakeTerm;
  33sub new {
  34        my ($class, $reason) = @_;
  35        return bless \$reason, shift;
  36}
  37sub readline {
  38        my $self = shift;
  39        die "Cannot use readline on FakeTerm: $$self";
  40}
  41package main;
  42
  43
  44sub usage {
  45        print <<EOT;
  46git send-email [options] <file | directory | rev-list options >
  47
  48  Composing:
  49    --from                  <str>  * Email From:
  50    --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    --confirm               <str>  * Confirm recipients before sending;
  79                                     auto, cc, compose, always, or never.
  80    --quiet                        * Output one line of info per email.
  81    --dry-run                      * Don't actually send the emails.
  82    --[no-]validate                * Perform patch sanity checks. Default on.
  83    --[no-]format-patch            * understand any non optional arguments as
  84                                     `git format-patch` ones.
  85
  86EOT
  87        exit(1);
  88}
  89
  90# most mail servers generate the Date: header, but not all...
  91sub format_2822_time {
  92        my ($time) = @_;
  93        my @localtm = localtime($time);
  94        my @gmttm = gmtime($time);
  95        my $localmin = $localtm[1] + $localtm[2] * 60;
  96        my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
  97        if ($localtm[0] != $gmttm[0]) {
  98                die "local zone differs from GMT by a non-minute interval\n";
  99        }
 100        if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
 101                $localmin += 1440;
 102        } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 103                $localmin -= 1440;
 104        } elsif ($gmttm[6] != $localtm[6]) {
 105                die "local time offset greater than or equal to 24 hours\n";
 106        }
 107        my $offset = $localmin - $gmtmin;
 108        my $offhour = $offset / 60;
 109        my $offmin = abs($offset % 60);
 110        if (abs($offhour) >= 24) {
 111                die ("local time offset greater than or equal to 24 hours\n");
 112        }
 113
 114        return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 115                       qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 116                       $localtm[3],
 117                       qw(Jan Feb Mar Apr May Jun
 118                          Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 119                       $localtm[5]+1900,
 120                       $localtm[2],
 121                       $localtm[1],
 122                       $localtm[0],
 123                       ($offset >= 0) ? '+' : '-',
 124                       abs($offhour),
 125                       $offmin,
 126                       );
 127}
 128
 129my $have_email_valid = eval { require Email::Valid; 1 };
 130my $have_mail_address = eval { require Mail::Address; 1 };
 131my $smtp;
 132my $auth;
 133
 134sub unique_email_list(@);
 135sub cleanup_compose_files();
 136
 137# Variables we fill in automatically, or via prompting:
 138my (@to,@cc,@initial_cc,@bcclist,@xh,
 139        $initial_reply_to,$initial_subject,@files,
 140        $author,$sender,$smtp_authpass,$annotate,$compose,$time);
 141
 142my $envelope_sender;
 143
 144# Example reply to:
 145#$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 146
 147my $repo = eval { Git->repository() };
 148my @repo = $repo ? ($repo) : ();
 149my $term = eval {
 150        $ENV{"GIT_SEND_EMAIL_NOTTY"}
 151                ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
 152                : new Term::ReadLine 'git-send-email';
 153};
 154if ($@) {
 155        $term = new FakeTerm "$@: going non-interactive";
 156}
 157
 158# Behavior modification variables
 159my ($quiet, $dry_run) = (0, 0);
 160my $format_patch;
 161my $compose_filename;
 162
 163# Handle interactive edition of files.
 164my $multiedit;
 165my $editor = Git::command_oneline('var', 'GIT_EDITOR');
 166
 167sub 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
 184my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
 185my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
 186my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
 187my ($validate, $confirm);
 188my (@suppress_cc);
 189
 190my $not_set_by_user = "true but not set by the user";
 191
 192my %config_bool_settings = (
 193    "thread" => [\$thread, 1],
 194    "chainreplyto" => [\$chain_reply_to, $not_set_by_user],
 195    "suppressfrom" => [\$suppress_from, undef],
 196    "signedoffbycc" => [\$signed_off_by_cc, undef],
 197    "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 198    "validate" => [\$validate, 1],
 199);
 200
 201my %config_settings = (
 202    "smtpserver" => \$smtp_server,
 203    "smtpserverport" => \$smtp_server_port,
 204    "smtpuser" => \$smtp_authuser,
 205    "smtppass" => \$smtp_authpass,
 206    "to" => \@to,
 207    "cc" => \@initial_cc,
 208    "cccmd" => \$cc_cmd,
 209    "aliasfiletype" => \$aliasfiletype,
 210    "bcc" => \@bcclist,
 211    "aliasesfile" => \@alias_files,
 212    "suppresscc" => \@suppress_cc,
 213    "envelopesender" => \$envelope_sender,
 214    "multiedit" => \$multiedit,
 215    "confirm"   => \$confirm,
 216    "from" => \$sender,
 217);
 218
 219# Help users prepare for 1.7.0
 220sub chain_reply_to {
 221        if (defined $chain_reply_to &&
 222            $chain_reply_to eq $not_set_by_user) {
 223                print STDERR
 224                    "In git 1.7.0, the default will be changed to --no-chain-reply-to\n" .
 225                    "Set sendemail.chainreplyto configuration variable to true if\n" .
 226                    "you want to keep --chain-reply-to as your default.\n";
 227                $chain_reply_to = 1;
 228        }
 229        return $chain_reply_to;
 230}
 231
 232# Handle Uncouth Termination
 233sub signal_handler {
 234
 235        # Make text normal
 236        print color("reset"), "\n";
 237
 238        # SMTP password masked
 239        system "stty echo";
 240
 241        # tmp files from --compose
 242        if (defined $compose_filename) {
 243                if (-e $compose_filename) {
 244                        print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 245                }
 246                if (-e ($compose_filename . ".final")) {
 247                        print "'$compose_filename.final' contains the composed email.\n"
 248                }
 249        }
 250
 251        exit;
 252};
 253
 254$SIG{TERM} = \&signal_handler;
 255$SIG{INT}  = \&signal_handler;
 256
 257# Begin by accumulating all the variables (defined above), that we will end up
 258# needing, first, from the command line:
 259
 260my $rc = GetOptions("sender|from=s" => \$sender,
 261                    "in-reply-to=s" => \$initial_reply_to,
 262                    "subject=s" => \$initial_subject,
 263                    "to=s" => \@to,
 264                    "cc=s" => \@initial_cc,
 265                    "bcc=s" => \@bcclist,
 266                    "chain-reply-to!" => \$chain_reply_to,
 267                    "smtp-server=s" => \$smtp_server,
 268                    "smtp-server-port=s" => \$smtp_server_port,
 269                    "smtp-user=s" => \$smtp_authuser,
 270                    "smtp-pass:s" => \$smtp_authpass,
 271                    "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 272                    "smtp-encryption=s" => \$smtp_encryption,
 273                    "identity=s" => \$identity,
 274                    "annotate" => \$annotate,
 275                    "compose" => \$compose,
 276                    "quiet" => \$quiet,
 277                    "cc-cmd=s" => \$cc_cmd,
 278                    "suppress-from!" => \$suppress_from,
 279                    "suppress-cc=s" => \@suppress_cc,
 280                    "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 281                    "confirm=s" => \$confirm,
 282                    "dry-run" => \$dry_run,
 283                    "envelope-sender=s" => \$envelope_sender,
 284                    "thread!" => \$thread,
 285                    "validate!" => \$validate,
 286                    "format-patch!" => \$format_patch,
 287         );
 288
 289unless ($rc) {
 290    usage();
 291}
 292
 293die "Cannot run git format-patch from outside a repository\n"
 294        if $format_patch and not $repo;
 295
 296# Now, let's fill any that aren't set in with defaults:
 297
 298sub read_config {
 299        my ($prefix) = @_;
 300
 301        foreach my $setting (keys %config_bool_settings) {
 302                my $target = $config_bool_settings{$setting}->[0];
 303                $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 304        }
 305
 306        foreach my $setting (keys %config_settings) {
 307                my $target = $config_settings{$setting};
 308                if (ref($target) eq "ARRAY") {
 309                        unless (@$target) {
 310                                my @values = Git::config(@repo, "$prefix.$setting");
 311                                @$target = @values if (@values && defined $values[0]);
 312                        }
 313                }
 314                else {
 315                        $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 316                }
 317        }
 318
 319        if (!defined $smtp_encryption) {
 320                my $enc = Git::config(@repo, "$prefix.smtpencryption");
 321                if (defined $enc) {
 322                        $smtp_encryption = $enc;
 323                } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 324                        $smtp_encryption = 'ssl';
 325                }
 326        }
 327}
 328
 329# read configuration from [sendemail "$identity"], fall back on [sendemail]
 330$identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 331read_config("sendemail.$identity") if (defined $identity);
 332read_config("sendemail");
 333
 334# fall back on builtin bool defaults
 335foreach my $setting (values %config_bool_settings) {
 336        ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 337}
 338
 339# 'default' encryption is none -- this only prevents a warning
 340$smtp_encryption = '' unless (defined $smtp_encryption);
 341
 342# Set CC suppressions
 343my(%suppress_cc);
 344if (@suppress_cc) {
 345        foreach my $entry (@suppress_cc) {
 346                die "Unknown --suppress-cc field: '$entry'\n"
 347                        unless $entry =~ /^(all|cccmd|cc|author|self|sob|body|bodycc)$/;
 348                $suppress_cc{$entry} = 1;
 349        }
 350}
 351
 352if ($suppress_cc{'all'}) {
 353        foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
 354                $suppress_cc{$entry} = 1;
 355        }
 356        delete $suppress_cc{'all'};
 357}
 358
 359# If explicit old-style ones are specified, they trump --suppress-cc.
 360$suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 361$suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 362
 363if ($suppress_cc{'body'}) {
 364        foreach my $entry (qw (sob bodycc)) {
 365                $suppress_cc{$entry} = 1;
 366        }
 367        delete $suppress_cc{'body'};
 368}
 369
 370# Set confirm's default value
 371my $confirm_unconfigured = !defined $confirm;
 372if ($confirm_unconfigured) {
 373        $confirm = scalar %suppress_cc ? 'compose' : 'auto';
 374};
 375die "Unknown --confirm setting: '$confirm'\n"
 376        unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
 377
 378# Debugging, print out the suppressions.
 379if (0) {
 380        print "suppressions:\n";
 381        foreach my $entry (keys %suppress_cc) {
 382                printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 383        }
 384}
 385
 386my ($repoauthor, $repocommitter);
 387($repoauthor) = Git::ident_person(@repo, 'author');
 388($repocommitter) = Git::ident_person(@repo, 'committer');
 389
 390# Verify the user input
 391
 392foreach my $entry (@to) {
 393        die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 394}
 395
 396foreach my $entry (@initial_cc) {
 397        die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 398}
 399
 400foreach my $entry (@bcclist) {
 401        die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 402}
 403
 404sub parse_address_line {
 405        if ($have_mail_address) {
 406                return map { $_->format } Mail::Address->parse($_[0]);
 407        } else {
 408                return split_addrs($_[0]);
 409        }
 410}
 411
 412sub split_addrs {
 413        return quotewords('\s*,\s*', 1, @_);
 414}
 415
 416my %aliases;
 417my %parse_alias = (
 418        # multiline formats can be supported in the future
 419        mutt => sub { my $fh = shift; while (<$fh>) {
 420                if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
 421                        my ($alias, $addr) = ($1, $2);
 422                        $addr =~ s/#.*$//; # mutt allows # comments
 423                         # commas delimit multiple addresses
 424                        $aliases{$alias} = [ split_addrs($addr) ];
 425                }}},
 426        mailrc => sub { my $fh = shift; while (<$fh>) {
 427                if (/^alias\s+(\S+)\s+(.*)$/) {
 428                        # spaces delimit multiple addresses
 429                        $aliases{$1} = [ quotewords('\s+', 0, $2) ];
 430                }}},
 431        pine => sub { my $fh = shift; my $f='\t[^\t]*';
 432                for (my $x = ''; defined($x); $x = $_) {
 433                        chomp $x;
 434                        $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 435                        $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 436                        $aliases{$1} = [ split_addrs($2) ];
 437                }},
 438        elm => sub  { my $fh = shift;
 439                      while (<$fh>) {
 440                          if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
 441                              my ($alias, $addr) = ($1, $2);
 442                               $aliases{$alias} = [ split_addrs($addr) ];
 443                          }
 444                      } },
 445
 446        gnus => sub { my $fh = shift; while (<$fh>) {
 447                if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 448                        $aliases{$1} = [ $2 ];
 449                }}}
 450);
 451
 452if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 453        foreach my $file (@alias_files) {
 454                open my $fh, '<', $file or die "opening $file: $!\n";
 455                $parse_alias{$aliasfiletype}->($fh);
 456                close $fh;
 457        }
 458}
 459
 460($sender) = expand_aliases($sender) if defined $sender;
 461
 462# returns 1 if the conflict must be solved using it as a format-patch argument
 463sub check_file_rev_conflict($) {
 464        return unless $repo;
 465        my $f = shift;
 466        try {
 467                $repo->command('rev-parse', '--verify', '--quiet', $f);
 468                if (defined($format_patch)) {
 469                        return $format_patch;
 470                }
 471                die(<<EOF);
 472File '$f' exists but it could also be the range of commits
 473to produce patches for.  Please disambiguate by...
 474
 475    * Saying "./$f" if you mean a file; or
 476    * Giving --format-patch option if you mean a range.
 477EOF
 478        } catch Git::Error::Command with {
 479                return 0;
 480        }
 481}
 482
 483# Now that all the defaults are set, process the rest of the command line
 484# arguments and collect up the files that need to be processed.
 485my @rev_list_opts;
 486while (defined(my $f = shift @ARGV)) {
 487        if ($f eq "--") {
 488                push @rev_list_opts, "--", @ARGV;
 489                @ARGV = ();
 490        } elsif (-d $f and !check_file_rev_conflict($f)) {
 491                opendir(DH,$f)
 492                        or die "Failed to opendir $f: $!";
 493
 494                push @files, grep { -f $_ } map { +$f . "/" . $_ }
 495                                sort readdir(DH);
 496                closedir(DH);
 497        } elsif ((-f $f or -p $f) and !check_file_rev_conflict($f)) {
 498                push @files, $f;
 499        } else {
 500                push @rev_list_opts, $f;
 501        }
 502}
 503
 504if (@rev_list_opts) {
 505        die "Cannot run git format-patch from outside a repository\n"
 506                unless $repo;
 507        push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 508}
 509
 510if ($validate) {
 511        foreach my $f (@files) {
 512                unless (-p $f) {
 513                        my $error = validate_patch($f);
 514                        $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 515                }
 516        }
 517}
 518
 519if (@files) {
 520        unless ($quiet) {
 521                print $_,"\n" for (@files);
 522        }
 523} else {
 524        print STDERR "\nNo patch files specified!\n\n";
 525        usage();
 526}
 527
 528sub get_patch_subject($) {
 529        my $fn = shift;
 530        open (my $fh, '<', $fn);
 531        while (my $line = <$fh>) {
 532                next unless ($line =~ /^Subject: (.*)$/);
 533                close $fh;
 534                return "GIT: $1\n";
 535        }
 536        close $fh;
 537        die "No subject line in $fn ?";
 538}
 539
 540if ($compose) {
 541        # Note that this does not need to be secure, but we will make a small
 542        # effort to have it be unique
 543        $compose_filename = ($repo ?
 544                tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 545                tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 546        open(C,">",$compose_filename)
 547                or die "Failed to open for writing $compose_filename: $!";
 548
 549
 550        my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 551        my $tpl_subject = $initial_subject || '';
 552        my $tpl_reply_to = $initial_reply_to || '';
 553
 554        print C <<EOT;
 555From $tpl_sender # This line is ignored.
 556GIT: Lines beginning in "GIT:" will be removed.
 557GIT: Consider including an overall diffstat or table of contents
 558GIT: for the patch you are writing.
 559GIT:
 560GIT: Clear the body content if you don't wish to send a summary.
 561From: $tpl_sender
 562Subject: $tpl_subject
 563In-Reply-To: $tpl_reply_to
 564
 565EOT
 566        for my $f (@files) {
 567                print C get_patch_subject($f);
 568        }
 569        close(C);
 570
 571        if ($annotate) {
 572                do_edit($compose_filename, @files);
 573        } else {
 574                do_edit($compose_filename);
 575        }
 576
 577        open(C2,">",$compose_filename . ".final")
 578                or die "Failed to open $compose_filename.final : " . $!;
 579
 580        open(C,"<",$compose_filename)
 581                or die "Failed to open $compose_filename : " . $!;
 582
 583        my $need_8bit_cte = file_has_nonascii($compose_filename);
 584        my $in_body = 0;
 585        my $summary_empty = 1;
 586        while(<C>) {
 587                next if m/^GIT:/;
 588                if ($in_body) {
 589                        $summary_empty = 0 unless (/^\n$/);
 590                } elsif (/^\n$/) {
 591                        $in_body = 1;
 592                        if ($need_8bit_cte) {
 593                                print C2 "MIME-Version: 1.0\n",
 594                                         "Content-Type: text/plain; ",
 595                                           "charset=UTF-8\n",
 596                                         "Content-Transfer-Encoding: 8bit\n";
 597                        }
 598                } elsif (/^MIME-Version:/i) {
 599                        $need_8bit_cte = 0;
 600                } elsif (/^Subject:\s*(.+)\s*$/i) {
 601                        $initial_subject = $1;
 602                        my $subject = $initial_subject;
 603                        $_ = "Subject: " .
 604                                ($subject =~ /[^[:ascii:]]/ ?
 605                                 quote_rfc2047($subject) :
 606                                 $subject) .
 607                                "\n";
 608                } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 609                        $initial_reply_to = $1;
 610                        next;
 611                } elsif (/^From:\s*(.+)\s*$/i) {
 612                        $sender = $1;
 613                        next;
 614                } elsif (/^(?:To|Cc|Bcc):/i) {
 615                        print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 616                        next;
 617                }
 618                print C2 $_;
 619        }
 620        close(C);
 621        close(C2);
 622
 623        if ($summary_empty) {
 624                print "Summary email is empty, skipping it\n";
 625                $compose = -1;
 626        }
 627} elsif ($annotate) {
 628        do_edit(@files);
 629}
 630
 631sub ask {
 632        my ($prompt, %arg) = @_;
 633        my $valid_re = $arg{valid_re};
 634        my $default = $arg{default};
 635        my $resp;
 636        my $i = 0;
 637        return defined $default ? $default : undef
 638                unless defined $term->IN and defined fileno($term->IN) and
 639                       defined $term->OUT and defined fileno($term->OUT);
 640        while ($i++ < 10) {
 641                $resp = $term->readline($prompt);
 642                if (!defined $resp) { # EOF
 643                        print "\n";
 644                        return defined $default ? $default : undef;
 645                }
 646                if ($resp eq '' and defined $default) {
 647                        return $default;
 648                }
 649                if (!defined $valid_re or $resp =~ /$valid_re/) {
 650                        return $resp;
 651                }
 652        }
 653        return undef;
 654}
 655
 656my $prompting = 0;
 657if (!defined $sender) {
 658        $sender = $repoauthor || $repocommitter || '';
 659        $sender = ask("Who should the emails appear to be from? [$sender] ",
 660                      default => $sender);
 661        print "Emails will be sent from: ", $sender, "\n";
 662        $prompting++;
 663}
 664
 665if (!@to) {
 666        my $to = ask("Who should the emails be sent to? ");
 667        push @to, parse_address_line($to) if defined $to; # sanitized/validated later
 668        $prompting++;
 669}
 670
 671sub expand_aliases {
 672        return map { expand_one_alias($_) } @_;
 673}
 674
 675my %EXPANDED_ALIASES;
 676sub expand_one_alias {
 677        my $alias = shift;
 678        if ($EXPANDED_ALIASES{$alias}) {
 679                die "fatal: alias '$alias' expands to itself\n";
 680        }
 681        local $EXPANDED_ALIASES{$alias} = 1;
 682        return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 683}
 684
 685@to = expand_aliases(@to);
 686@to = (map { sanitize_address($_) } @to);
 687@initial_cc = expand_aliases(@initial_cc);
 688@bcclist = expand_aliases(@bcclist);
 689
 690if ($thread && !defined $initial_reply_to && $prompting) {
 691        $initial_reply_to = ask(
 692                "Message-ID to be used as In-Reply-To for the first email? ");
 693}
 694if (defined $initial_reply_to) {
 695        $initial_reply_to =~ s/^\s*<?//;
 696        $initial_reply_to =~ s/>?\s*$//;
 697        $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 698}
 699
 700if (!defined $smtp_server) {
 701        foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 702                if (-x $_) {
 703                        $smtp_server = $_;
 704                        last;
 705                }
 706        }
 707        $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 708}
 709
 710if ($compose && $compose > 0) {
 711        @files = ($compose_filename . ".final", @files);
 712}
 713
 714# Variables we set as part of the loop over files
 715our ($message_id, %mail, $subject, $reply_to, $references, $message,
 716        $needs_confirm, $message_num, $ask_default);
 717
 718sub extract_valid_address {
 719        my $address = shift;
 720        my $local_part_regexp = '[^<>"\s@]+';
 721        my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
 722
 723        # check for a local address:
 724        return $address if ($address =~ /^($local_part_regexp)$/);
 725
 726        $address =~ s/^\s*<(.*)>\s*$/$1/;
 727        if ($have_email_valid) {
 728                return scalar Email::Valid->address($address);
 729        } else {
 730                # less robust/correct than the monster regexp in Email::Valid,
 731                # but still does a 99% job, and one less dependency
 732                $address =~ /($local_part_regexp\@$domain_regexp)/;
 733                return $1;
 734        }
 735}
 736
 737# Usually don't need to change anything below here.
 738
 739# we make a "fake" message id by taking the current number
 740# of seconds since the beginning of Unix time and tacking on
 741# a random number to the end, in case we are called quicker than
 742# 1 second since the last time we were called.
 743
 744# We'll setup a template for the message id, using the "from" address:
 745
 746my ($message_id_stamp, $message_id_serial);
 747sub make_message_id
 748{
 749        my $uniq;
 750        if (!defined $message_id_stamp) {
 751                $message_id_stamp = sprintf("%s-%s", time, $$);
 752                $message_id_serial = 0;
 753        }
 754        $message_id_serial++;
 755        $uniq = "$message_id_stamp-$message_id_serial";
 756
 757        my $du_part;
 758        for ($sender, $repocommitter, $repoauthor) {
 759                $du_part = extract_valid_address(sanitize_address($_));
 760                last if (defined $du_part and $du_part ne '');
 761        }
 762        if (not defined $du_part or $du_part eq '') {
 763                use Sys::Hostname qw();
 764                $du_part = 'user@' . Sys::Hostname::hostname();
 765        }
 766        my $message_id_template = "<%s-git-send-email-%s>";
 767        $message_id = sprintf($message_id_template, $uniq, $du_part);
 768        #print "new message id = $message_id\n"; # Was useful for debugging
 769}
 770
 771
 772
 773$time = time - scalar $#files;
 774
 775sub unquote_rfc2047 {
 776        local ($_) = @_;
 777        my $encoding;
 778        if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
 779                $encoding = $1;
 780                s/_/ /g;
 781                s/=([0-9A-F]{2})/chr(hex($1))/eg;
 782        }
 783        return wantarray ? ($_, $encoding) : $_;
 784}
 785
 786sub quote_rfc2047 {
 787        local $_ = shift;
 788        my $encoding = shift || 'UTF-8';
 789        s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 790        s/(.*)/=\?$encoding\?q\?$1\?=/;
 791        return $_;
 792}
 793
 794sub is_rfc2047_quoted {
 795        my $s = shift;
 796        my $token = '[^][()<>@,;:"\/?.= \000-\037\177-\377]+';
 797        my $encoded_text = '[!->@-~]+';
 798        length($s) <= 75 &&
 799        $s =~ m/^(?:"[[:ascii:]]*"|=\?$token\?$token\?$encoded_text\?=)$/o;
 800}
 801
 802# use the simplest quoting being able to handle the recipient
 803sub sanitize_address
 804{
 805        my ($recipient) = @_;
 806        my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 807
 808        if (not $recipient_name) {
 809                return "$recipient";
 810        }
 811
 812        # if recipient_name is already quoted, do nothing
 813        if (is_rfc2047_quoted($recipient_name)) {
 814                return $recipient;
 815        }
 816
 817        # rfc2047 is needed if a non-ascii char is included
 818        if ($recipient_name =~ /[^[:ascii:]]/) {
 819                $recipient_name =~ s/^"(.*)"$/$1/;
 820                $recipient_name = quote_rfc2047($recipient_name);
 821        }
 822
 823        # double quotes are needed if specials or CTLs are included
 824        elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 825                $recipient_name =~ s/(["\\\r])/\\$1/g;
 826                $recipient_name = "\"$recipient_name\"";
 827        }
 828
 829        return "$recipient_name $recipient_addr";
 830
 831}
 832
 833# Returns 1 if the message was sent, and 0 otherwise.
 834# In actuality, the whole program dies when there
 835# is an error sending a message.
 836
 837sub send_message
 838{
 839        my @recipients = unique_email_list(@to);
 840        @cc = (grep { my $cc = extract_valid_address($_);
 841                      not grep { $cc eq $_ } @recipients
 842                    }
 843               map { sanitize_address($_) }
 844               @cc);
 845        my $to = join (",\n\t", @recipients);
 846        @recipients = unique_email_list(@recipients,@cc,@bcclist);
 847        @recipients = (map { extract_valid_address($_) } @recipients);
 848        my $date = format_2822_time($time++);
 849        my $gitversion = '@@GIT_VERSION@@';
 850        if ($gitversion =~ m/..GIT_VERSION../) {
 851            $gitversion = Git::version();
 852        }
 853
 854        my $cc = join(",\n\t", unique_email_list(@cc));
 855        my $ccline = "";
 856        if ($cc ne '') {
 857                $ccline = "\nCc: $cc";
 858        }
 859        my $sanitized_sender = sanitize_address($sender);
 860        make_message_id() unless defined($message_id);
 861
 862        my $header = "From: $sanitized_sender
 863To: $to${ccline}
 864Subject: $subject
 865Date: $date
 866Message-Id: $message_id
 867X-Mailer: git-send-email $gitversion
 868";
 869        if ($reply_to) {
 870
 871                $header .= "In-Reply-To: $reply_to\n";
 872                $header .= "References: $references\n";
 873        }
 874        if (@xh) {
 875                $header .= join("\n", @xh) . "\n";
 876        }
 877
 878        my @sendmail_parameters = ('-i', @recipients);
 879        my $raw_from = $sanitized_sender;
 880        if (defined $envelope_sender && $envelope_sender ne "auto") {
 881                $raw_from = $envelope_sender;
 882        }
 883        $raw_from = extract_valid_address($raw_from);
 884        unshift (@sendmail_parameters,
 885                        '-f', $raw_from) if(defined $envelope_sender);
 886
 887        if ($needs_confirm && !$dry_run) {
 888                print "\n$header\n";
 889                if ($needs_confirm eq "inform") {
 890                        $confirm_unconfigured = 0; # squelch this message for the rest of this run
 891                        $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
 892                        print "    The Cc list above has been expanded by additional\n";
 893                        print "    addresses found in the patch commit message. By default\n";
 894                        print "    send-email prompts before sending whenever this occurs.\n";
 895                        print "    This behavior is controlled by the sendemail.confirm\n";
 896                        print "    configuration setting.\n";
 897                        print "\n";
 898                        print "    For additional information, run 'git send-email --help'.\n";
 899                        print "    To retain the current behavior, but squelch this message,\n";
 900                        print "    run 'git config --global sendemail.confirm auto'.\n\n";
 901                }
 902                $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ",
 903                         valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
 904                         default => $ask_default);
 905                die "Send this email reply required" unless defined $_;
 906                if (/^n/i) {
 907                        return 0;
 908                } elsif (/^q/i) {
 909                        cleanup_compose_files();
 910                        exit(0);
 911                } elsif (/^a/i) {
 912                        $confirm = 'never';
 913                }
 914        }
 915
 916        if ($dry_run) {
 917                # We don't want to send the email.
 918        } elsif ($smtp_server =~ m#^/#) {
 919                my $pid = open my $sm, '|-';
 920                defined $pid or die $!;
 921                if (!$pid) {
 922                        exec($smtp_server, @sendmail_parameters) or die $!;
 923                }
 924                print $sm "$header\n$message";
 925                close $sm or die $?;
 926        } else {
 927
 928                if (!defined $smtp_server) {
 929                        die "The required SMTP server is not properly defined."
 930                }
 931
 932                if ($smtp_encryption eq 'ssl') {
 933                        $smtp_server_port ||= 465; # ssmtp
 934                        require Net::SMTP::SSL;
 935                        $smtp ||= Net::SMTP::SSL->new($smtp_server, Port => $smtp_server_port);
 936                }
 937                else {
 938                        require Net::SMTP;
 939                        $smtp ||= Net::SMTP->new((defined $smtp_server_port)
 940                                                 ? "$smtp_server:$smtp_server_port"
 941                                                 : $smtp_server);
 942                        if ($smtp_encryption eq 'tls' && $smtp) {
 943                                require Net::SMTP::SSL;
 944                                $smtp->command('STARTTLS');
 945                                $smtp->response();
 946                                if ($smtp->code == 220) {
 947                                        $smtp = Net::SMTP::SSL->start_SSL($smtp)
 948                                                or die "STARTTLS failed! ".$smtp->message;
 949                                        $smtp_encryption = '';
 950                                        # Send EHLO again to receive fresh
 951                                        # supported commands
 952                                        $smtp->hello();
 953                                } else {
 954                                        die "Server does not support STARTTLS! ".$smtp->message;
 955                                }
 956                        }
 957                }
 958
 959                if (!$smtp) {
 960                        die "Unable to initialize SMTP properly.  Is there something wrong with your config?";
 961                }
 962
 963                if (defined $smtp_authuser) {
 964
 965                        if (!defined $smtp_authpass) {
 966
 967                                system "stty -echo";
 968
 969                                do {
 970                                        print "Password: ";
 971                                        $_ = <STDIN>;
 972                                        print "\n";
 973                                } while (!defined $_);
 974
 975                                chomp($smtp_authpass = $_);
 976
 977                                system "stty echo";
 978                        }
 979
 980                        $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
 981                }
 982
 983                $smtp->mail( $raw_from ) or die $smtp->message;
 984                $smtp->to( @recipients ) or die $smtp->message;
 985                $smtp->data or die $smtp->message;
 986                $smtp->datasend("$header\n$message") or die $smtp->message;
 987                $smtp->dataend() or die $smtp->message;
 988                $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message;
 989        }
 990        if ($quiet) {
 991                printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
 992        } else {
 993                print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
 994                if ($smtp_server !~ m#^/#) {
 995                        print "Server: $smtp_server\n";
 996                        print "MAIL FROM:<$raw_from>\n";
 997                        foreach my $entry (@recipients) {
 998                            print "RCPT TO:<$entry>\n";
 999                        }
1000                } else {
1001                        print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
1002                }
1003                print $header, "\n";
1004                if ($smtp) {
1005                        print "Result: ", $smtp->code, ' ',
1006                                ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
1007                } else {
1008                        print "Result: OK\n";
1009                }
1010        }
1011
1012        return 1;
1013}
1014
1015$reply_to = $initial_reply_to;
1016$references = $initial_reply_to || '';
1017$subject = $initial_subject;
1018$message_num = 0;
1019
1020foreach my $t (@files) {
1021        open(F,"<",$t) or die "can't open file $t";
1022
1023        my $author = undef;
1024        my $author_encoding;
1025        my $has_content_type;
1026        my $body_encoding;
1027        @cc = ();
1028        @xh = ();
1029        my $input_format = undef;
1030        my @header = ();
1031        $message = "";
1032        $message_num++;
1033        # First unfold multiline header fields
1034        while(<F>) {
1035                last if /^\s*$/;
1036                if (/^\s+\S/ and @header) {
1037                        chomp($header[$#header]);
1038                        s/^\s+/ /;
1039                        $header[$#header] .= $_;
1040            } else {
1041                        push(@header, $_);
1042                }
1043        }
1044        # Now parse the header
1045        foreach(@header) {
1046                if (/^From /) {
1047                        $input_format = 'mbox';
1048                        next;
1049                }
1050                chomp;
1051                if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1052                        $input_format = 'mbox';
1053                }
1054
1055                if (defined $input_format && $input_format eq 'mbox') {
1056                        if (/^Subject:\s+(.*)$/) {
1057                                $subject = $1;
1058                        }
1059                        elsif (/^From:\s+(.*)$/) {
1060                                ($author, $author_encoding) = unquote_rfc2047($1);
1061                                next if $suppress_cc{'author'};
1062                                next if $suppress_cc{'self'} and $author eq $sender;
1063                                printf("(mbox) Adding cc: %s from line '%s'\n",
1064                                        $1, $_) unless $quiet;
1065                                push @cc, $1;
1066                        }
1067                        elsif (/^Cc:\s+(.*)$/) {
1068                                foreach my $addr (parse_address_line($1)) {
1069                                        if (unquote_rfc2047($addr) eq $sender) {
1070                                                next if ($suppress_cc{'self'});
1071                                        } else {
1072                                                next if ($suppress_cc{'cc'});
1073                                        }
1074                                        printf("(mbox) Adding cc: %s from line '%s'\n",
1075                                                $addr, $_) unless $quiet;
1076                                        push @cc, $addr;
1077                                }
1078                        }
1079                        elsif (/^Content-type:/i) {
1080                                $has_content_type = 1;
1081                                if (/charset="?([^ "]+)/) {
1082                                        $body_encoding = $1;
1083                                }
1084                                push @xh, $_;
1085                        }
1086                        elsif (/^Message-Id: (.*)/i) {
1087                                $message_id = $1;
1088                        }
1089                        elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
1090                                push @xh, $_;
1091                        }
1092
1093                } else {
1094                        # In the traditional
1095                        # "send lots of email" format,
1096                        # line 1 = cc
1097                        # line 2 = subject
1098                        # So let's support that, too.
1099                        $input_format = 'lots';
1100                        if (@cc == 0 && !$suppress_cc{'cc'}) {
1101                                printf("(non-mbox) Adding cc: %s from line '%s'\n",
1102                                        $_, $_) unless $quiet;
1103                                push @cc, $_;
1104                        } elsif (!defined $subject) {
1105                                $subject = $_;
1106                        }
1107                }
1108        }
1109        # Now parse the message body
1110        while(<F>) {
1111                $message .=  $_;
1112                if (/^(Signed-off-by|Cc): (.*)$/i) {
1113                        chomp;
1114                        my ($what, $c) = ($1, $2);
1115                        chomp $c;
1116                        if ($c eq $sender) {
1117                                next if ($suppress_cc{'self'});
1118                        } else {
1119                                next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1120                                next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1121                        }
1122                        push @cc, $c;
1123                        printf("(body) Adding cc: %s from line '%s'\n",
1124                                $c, $_) unless $quiet;
1125                }
1126        }
1127        close F;
1128
1129        if (defined $cc_cmd && !$suppress_cc{'cccmd'}) {
1130                open(F, "$cc_cmd \Q$t\E |")
1131                        or die "(cc-cmd) Could not execute '$cc_cmd'";
1132                while(<F>) {
1133                        my $c = $_;
1134                        $c =~ s/^\s*//g;
1135                        $c =~ s/\n$//g;
1136                        next if ($c eq $sender and $suppress_from);
1137                        push @cc, $c;
1138                        printf("(cc-cmd) Adding cc: %s from: '%s'\n",
1139                                $c, $cc_cmd) unless $quiet;
1140                }
1141                close F
1142                        or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
1143        }
1144
1145        if (defined $author and $author ne $sender) {
1146                $message = "From: $author\n\n$message";
1147                if (defined $author_encoding) {
1148                        if ($has_content_type) {
1149                                if ($body_encoding eq $author_encoding) {
1150                                        # ok, we already have the right encoding
1151                                }
1152                                else {
1153                                        # uh oh, we should re-encode
1154                                }
1155                        }
1156                        else {
1157                                push @xh,
1158                                  'MIME-Version: 1.0',
1159                                  "Content-Type: text/plain; charset=$author_encoding",
1160                                  'Content-Transfer-Encoding: 8bit';
1161                        }
1162                }
1163        }
1164
1165        $needs_confirm = (
1166                $confirm eq "always" or
1167                ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1168                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1169        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1170
1171        @cc = (@initial_cc, @cc);
1172
1173        my $message_was_sent = send_message();
1174
1175        # set up for the next message
1176        if ($thread && $message_was_sent &&
1177                (chain_reply_to() || !defined $reply_to || length($reply_to) == 0)) {
1178                $reply_to = $message_id;
1179                if (length $references > 0) {
1180                        $references .= "\n $message_id";
1181                } else {
1182                        $references = "$message_id";
1183                }
1184        }
1185        $message_id = undef;
1186}
1187
1188cleanup_compose_files();
1189
1190sub cleanup_compose_files() {
1191        unlink($compose_filename, $compose_filename . ".final") if $compose;
1192}
1193
1194$smtp->quit if $smtp;
1195
1196sub unique_email_list(@) {
1197        my %seen;
1198        my @emails;
1199
1200        foreach my $entry (@_) {
1201                if (my $clean = extract_valid_address($entry)) {
1202                        $seen{$clean} ||= 0;
1203                        next if $seen{$clean}++;
1204                        push @emails, $entry;
1205                } else {
1206                        print STDERR "W: unable to extract a valid address",
1207                                        " from: $entry\n";
1208                }
1209        }
1210        return @emails;
1211}
1212
1213sub validate_patch {
1214        my $fn = shift;
1215        open(my $fh, '<', $fn)
1216                or die "unable to open $fn: $!\n";
1217        while (my $line = <$fh>) {
1218                if (length($line) > 998) {
1219                        return "$.: patch contains a line longer than 998 characters";
1220                }
1221        }
1222        return undef;
1223}
1224
1225sub file_has_nonascii {
1226        my $fn = shift;
1227        open(my $fh, '<', $fn)
1228                or die "unable to open $fn: $!\n";
1229        while (my $line = <$fh>) {
1230                return 1 if $line =~ /[^[:ascii:]]/;
1231        }
1232        return 0;
1233}