git-send-email.perlon commit send-email: lazily assign editor variable (0ce142c)
   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;
 166
 167sub do_edit {
 168        if (!defined($editor)) {
 169                $editor = Git::command_oneline('var', 'GIT_EDITOR');
 170        }
 171        if (defined($multiedit) && !$multiedit) {
 172                map {
 173                        system('sh', '-c', $editor.' "$@"', $editor, $_);
 174                        if (($? & 127) || ($? >> 8)) {
 175                                die("the editor exited uncleanly, aborting everything");
 176                        }
 177                } @_;
 178        } else {
 179                system('sh', '-c', $editor.' "$@"', $editor, @_);
 180                if (($? & 127) || ($? >> 8)) {
 181                        die("the editor exited uncleanly, aborting everything");
 182                }
 183        }
 184}
 185
 186# Variables with corresponding config settings
 187my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
 188my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
 189my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
 190my ($validate, $confirm);
 191my (@suppress_cc);
 192
 193my %config_bool_settings = (
 194    "thread" => [\$thread, 1],
 195    "chainreplyto" => [\$chain_reply_to, 1],
 196    "suppressfrom" => [\$suppress_from, undef],
 197    "signedoffbycc" => [\$signed_off_by_cc, undef],
 198    "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 199    "validate" => [\$validate, 1],
 200);
 201
 202my %config_settings = (
 203    "smtpserver" => \$smtp_server,
 204    "smtpserverport" => \$smtp_server_port,
 205    "smtpuser" => \$smtp_authuser,
 206    "smtppass" => \$smtp_authpass,
 207    "to" => \@to,
 208    "cc" => \@initial_cc,
 209    "cccmd" => \$cc_cmd,
 210    "aliasfiletype" => \$aliasfiletype,
 211    "bcc" => \@bcclist,
 212    "aliasesfile" => \@alias_files,
 213    "suppresscc" => \@suppress_cc,
 214    "envelopesender" => \$envelope_sender,
 215    "multiedit" => \$multiedit,
 216    "confirm"   => \$confirm,
 217    "from" => \$sender,
 218);
 219
 220# Handle Uncouth Termination
 221sub signal_handler {
 222
 223        # Make text normal
 224        print color("reset"), "\n";
 225
 226        # SMTP password masked
 227        system "stty echo";
 228
 229        # tmp files from --compose
 230        if (defined $compose_filename) {
 231                if (-e $compose_filename) {
 232                        print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 233                }
 234                if (-e ($compose_filename . ".final")) {
 235                        print "'$compose_filename.final' contains the composed email.\n"
 236                }
 237        }
 238
 239        exit;
 240};
 241
 242$SIG{TERM} = \&signal_handler;
 243$SIG{INT}  = \&signal_handler;
 244
 245# Begin by accumulating all the variables (defined above), that we will end up
 246# needing, first, from the command line:
 247
 248my $rc = GetOptions("sender|from=s" => \$sender,
 249                    "in-reply-to=s" => \$initial_reply_to,
 250                    "subject=s" => \$initial_subject,
 251                    "to=s" => \@to,
 252                    "cc=s" => \@initial_cc,
 253                    "bcc=s" => \@bcclist,
 254                    "chain-reply-to!" => \$chain_reply_to,
 255                    "smtp-server=s" => \$smtp_server,
 256                    "smtp-server-port=s" => \$smtp_server_port,
 257                    "smtp-user=s" => \$smtp_authuser,
 258                    "smtp-pass:s" => \$smtp_authpass,
 259                    "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 260                    "smtp-encryption=s" => \$smtp_encryption,
 261                    "identity=s" => \$identity,
 262                    "annotate" => \$annotate,
 263                    "compose" => \$compose,
 264                    "quiet" => \$quiet,
 265                    "cc-cmd=s" => \$cc_cmd,
 266                    "suppress-from!" => \$suppress_from,
 267                    "suppress-cc=s" => \@suppress_cc,
 268                    "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 269                    "confirm=s" => \$confirm,
 270                    "dry-run" => \$dry_run,
 271                    "envelope-sender=s" => \$envelope_sender,
 272                    "thread!" => \$thread,
 273                    "validate!" => \$validate,
 274                    "format-patch!" => \$format_patch,
 275         );
 276
 277unless ($rc) {
 278    usage();
 279}
 280
 281die "Cannot run git format-patch from outside a repository\n"
 282        if $format_patch and not $repo;
 283
 284# Now, let's fill any that aren't set in with defaults:
 285
 286sub read_config {
 287        my ($prefix) = @_;
 288
 289        foreach my $setting (keys %config_bool_settings) {
 290                my $target = $config_bool_settings{$setting}->[0];
 291                $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 292        }
 293
 294        foreach my $setting (keys %config_settings) {
 295                my $target = $config_settings{$setting};
 296                if (ref($target) eq "ARRAY") {
 297                        unless (@$target) {
 298                                my @values = Git::config(@repo, "$prefix.$setting");
 299                                @$target = @values if (@values && defined $values[0]);
 300                        }
 301                }
 302                else {
 303                        $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 304                }
 305        }
 306
 307        if (!defined $smtp_encryption) {
 308                my $enc = Git::config(@repo, "$prefix.smtpencryption");
 309                if (defined $enc) {
 310                        $smtp_encryption = $enc;
 311                } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 312                        $smtp_encryption = 'ssl';
 313                }
 314        }
 315}
 316
 317# read configuration from [sendemail "$identity"], fall back on [sendemail]
 318$identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 319read_config("sendemail.$identity") if (defined $identity);
 320read_config("sendemail");
 321
 322# fall back on builtin bool defaults
 323foreach my $setting (values %config_bool_settings) {
 324        ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 325}
 326
 327# 'default' encryption is none -- this only prevents a warning
 328$smtp_encryption = '' unless (defined $smtp_encryption);
 329
 330# Set CC suppressions
 331my(%suppress_cc);
 332if (@suppress_cc) {
 333        foreach my $entry (@suppress_cc) {
 334                die "Unknown --suppress-cc field: '$entry'\n"
 335                        unless $entry =~ /^(all|cccmd|cc|author|self|sob|body|bodycc)$/;
 336                $suppress_cc{$entry} = 1;
 337        }
 338}
 339
 340if ($suppress_cc{'all'}) {
 341        foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
 342                $suppress_cc{$entry} = 1;
 343        }
 344        delete $suppress_cc{'all'};
 345}
 346
 347# If explicit old-style ones are specified, they trump --suppress-cc.
 348$suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 349$suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 350
 351if ($suppress_cc{'body'}) {
 352        foreach my $entry (qw (sob bodycc)) {
 353                $suppress_cc{$entry} = 1;
 354        }
 355        delete $suppress_cc{'body'};
 356}
 357
 358# Set confirm's default value
 359my $confirm_unconfigured = !defined $confirm;
 360if ($confirm_unconfigured) {
 361        $confirm = scalar %suppress_cc ? 'compose' : 'auto';
 362};
 363die "Unknown --confirm setting: '$confirm'\n"
 364        unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
 365
 366# Debugging, print out the suppressions.
 367if (0) {
 368        print "suppressions:\n";
 369        foreach my $entry (keys %suppress_cc) {
 370                printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 371        }
 372}
 373
 374my ($repoauthor, $repocommitter);
 375($repoauthor) = Git::ident_person(@repo, 'author');
 376($repocommitter) = Git::ident_person(@repo, 'committer');
 377
 378# Verify the user input
 379
 380foreach my $entry (@to) {
 381        die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 382}
 383
 384foreach my $entry (@initial_cc) {
 385        die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 386}
 387
 388foreach my $entry (@bcclist) {
 389        die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 390}
 391
 392sub parse_address_line {
 393        if ($have_mail_address) {
 394                return map { $_->format } Mail::Address->parse($_[0]);
 395        } else {
 396                return split_addrs($_[0]);
 397        }
 398}
 399
 400sub split_addrs {
 401        return quotewords('\s*,\s*', 1, @_);
 402}
 403
 404my %aliases;
 405my %parse_alias = (
 406        # multiline formats can be supported in the future
 407        mutt => sub { my $fh = shift; while (<$fh>) {
 408                if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
 409                        my ($alias, $addr) = ($1, $2);
 410                        $addr =~ s/#.*$//; # mutt allows # comments
 411                         # commas delimit multiple addresses
 412                        $aliases{$alias} = [ split_addrs($addr) ];
 413                }}},
 414        mailrc => sub { my $fh = shift; while (<$fh>) {
 415                if (/^alias\s+(\S+)\s+(.*)$/) {
 416                        # spaces delimit multiple addresses
 417                        $aliases{$1} = [ quotewords('\s+', 0, $2) ];
 418                }}},
 419        pine => sub { my $fh = shift; my $f='\t[^\t]*';
 420                for (my $x = ''; defined($x); $x = $_) {
 421                        chomp $x;
 422                        $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 423                        $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 424                        $aliases{$1} = [ split_addrs($2) ];
 425                }},
 426        elm => sub  { my $fh = shift;
 427                      while (<$fh>) {
 428                          if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
 429                              my ($alias, $addr) = ($1, $2);
 430                               $aliases{$alias} = [ split_addrs($addr) ];
 431                          }
 432                      } },
 433
 434        gnus => sub { my $fh = shift; while (<$fh>) {
 435                if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 436                        $aliases{$1} = [ $2 ];
 437                }}}
 438);
 439
 440if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 441        foreach my $file (@alias_files) {
 442                open my $fh, '<', $file or die "opening $file: $!\n";
 443                $parse_alias{$aliasfiletype}->($fh);
 444                close $fh;
 445        }
 446}
 447
 448($sender) = expand_aliases($sender) if defined $sender;
 449
 450# returns 1 if the conflict must be solved using it as a format-patch argument
 451sub check_file_rev_conflict($) {
 452        return unless $repo;
 453        my $f = shift;
 454        try {
 455                $repo->command('rev-parse', '--verify', '--quiet', $f);
 456                if (defined($format_patch)) {
 457                        return $format_patch;
 458                }
 459                die(<<EOF);
 460File '$f' exists but it could also be the range of commits
 461to produce patches for.  Please disambiguate by...
 462
 463    * Saying "./$f" if you mean a file; or
 464    * Giving --format-patch option if you mean a range.
 465EOF
 466        } catch Git::Error::Command with {
 467                return 0;
 468        }
 469}
 470
 471# Now that all the defaults are set, process the rest of the command line
 472# arguments and collect up the files that need to be processed.
 473my @rev_list_opts;
 474while (defined(my $f = shift @ARGV)) {
 475        if ($f eq "--") {
 476                push @rev_list_opts, "--", @ARGV;
 477                @ARGV = ();
 478        } elsif (-d $f and !check_file_rev_conflict($f)) {
 479                opendir(DH,$f)
 480                        or die "Failed to opendir $f: $!";
 481
 482                push @files, grep { -f $_ } map { +$f . "/" . $_ }
 483                                sort readdir(DH);
 484                closedir(DH);
 485        } elsif ((-f $f or -p $f) and !check_file_rev_conflict($f)) {
 486                push @files, $f;
 487        } else {
 488                push @rev_list_opts, $f;
 489        }
 490}
 491
 492if (@rev_list_opts) {
 493        die "Cannot run git format-patch from outside a repository\n"
 494                unless $repo;
 495        push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 496}
 497
 498if ($validate) {
 499        foreach my $f (@files) {
 500                unless (-p $f) {
 501                        my $error = validate_patch($f);
 502                        $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 503                }
 504        }
 505}
 506
 507if (@files) {
 508        unless ($quiet) {
 509                print $_,"\n" for (@files);
 510        }
 511} else {
 512        print STDERR "\nNo patch files specified!\n\n";
 513        usage();
 514}
 515
 516sub get_patch_subject($) {
 517        my $fn = shift;
 518        open (my $fh, '<', $fn);
 519        while (my $line = <$fh>) {
 520                next unless ($line =~ /^Subject: (.*)$/);
 521                close $fh;
 522                return "GIT: $1\n";
 523        }
 524        close $fh;
 525        die "No subject line in $fn ?";
 526}
 527
 528if ($compose) {
 529        # Note that this does not need to be secure, but we will make a small
 530        # effort to have it be unique
 531        $compose_filename = ($repo ?
 532                tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 533                tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 534        open(C,">",$compose_filename)
 535                or die "Failed to open for writing $compose_filename: $!";
 536
 537
 538        my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 539        my $tpl_subject = $initial_subject || '';
 540        my $tpl_reply_to = $initial_reply_to || '';
 541
 542        print C <<EOT;
 543From $tpl_sender # This line is ignored.
 544GIT: Lines beginning in "GIT:" will be removed.
 545GIT: Consider including an overall diffstat or table of contents
 546GIT: for the patch you are writing.
 547GIT:
 548GIT: Clear the body content if you don't wish to send a summary.
 549From: $tpl_sender
 550Subject: $tpl_subject
 551In-Reply-To: $tpl_reply_to
 552
 553EOT
 554        for my $f (@files) {
 555                print C get_patch_subject($f);
 556        }
 557        close(C);
 558
 559        if ($annotate) {
 560                do_edit($compose_filename, @files);
 561        } else {
 562                do_edit($compose_filename);
 563        }
 564
 565        open(C2,">",$compose_filename . ".final")
 566                or die "Failed to open $compose_filename.final : " . $!;
 567
 568        open(C,"<",$compose_filename)
 569                or die "Failed to open $compose_filename : " . $!;
 570
 571        my $need_8bit_cte = file_has_nonascii($compose_filename);
 572        my $in_body = 0;
 573        my $summary_empty = 1;
 574        while(<C>) {
 575                next if m/^GIT:/;
 576                if ($in_body) {
 577                        $summary_empty = 0 unless (/^\n$/);
 578                } elsif (/^\n$/) {
 579                        $in_body = 1;
 580                        if ($need_8bit_cte) {
 581                                print C2 "MIME-Version: 1.0\n",
 582                                         "Content-Type: text/plain; ",
 583                                           "charset=UTF-8\n",
 584                                         "Content-Transfer-Encoding: 8bit\n";
 585                        }
 586                } elsif (/^MIME-Version:/i) {
 587                        $need_8bit_cte = 0;
 588                } elsif (/^Subject:\s*(.+)\s*$/i) {
 589                        $initial_subject = $1;
 590                        my $subject = $initial_subject;
 591                        $_ = "Subject: " .
 592                                ($subject =~ /[^[:ascii:]]/ ?
 593                                 quote_rfc2047($subject) :
 594                                 $subject) .
 595                                "\n";
 596                } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 597                        $initial_reply_to = $1;
 598                        next;
 599                } elsif (/^From:\s*(.+)\s*$/i) {
 600                        $sender = $1;
 601                        next;
 602                } elsif (/^(?:To|Cc|Bcc):/i) {
 603                        print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 604                        next;
 605                }
 606                print C2 $_;
 607        }
 608        close(C);
 609        close(C2);
 610
 611        if ($summary_empty) {
 612                print "Summary email is empty, skipping it\n";
 613                $compose = -1;
 614        }
 615} elsif ($annotate) {
 616        do_edit(@files);
 617}
 618
 619sub ask {
 620        my ($prompt, %arg) = @_;
 621        my $valid_re = $arg{valid_re};
 622        my $default = $arg{default};
 623        my $resp;
 624        my $i = 0;
 625        return defined $default ? $default : undef
 626                unless defined $term->IN and defined fileno($term->IN) and
 627                       defined $term->OUT and defined fileno($term->OUT);
 628        while ($i++ < 10) {
 629                $resp = $term->readline($prompt);
 630                if (!defined $resp) { # EOF
 631                        print "\n";
 632                        return defined $default ? $default : undef;
 633                }
 634                if ($resp eq '' and defined $default) {
 635                        return $default;
 636                }
 637                if (!defined $valid_re or $resp =~ /$valid_re/) {
 638                        return $resp;
 639                }
 640        }
 641        return undef;
 642}
 643
 644my $prompting = 0;
 645if (!defined $sender) {
 646        $sender = $repoauthor || $repocommitter || '';
 647        $sender = ask("Who should the emails appear to be from? [$sender] ",
 648                      default => $sender);
 649        print "Emails will be sent from: ", $sender, "\n";
 650        $prompting++;
 651}
 652
 653if (!@to) {
 654        my $to = ask("Who should the emails be sent to? ");
 655        push @to, parse_address_line($to) if defined $to; # sanitized/validated later
 656        $prompting++;
 657}
 658
 659sub expand_aliases {
 660        return map { expand_one_alias($_) } @_;
 661}
 662
 663my %EXPANDED_ALIASES;
 664sub expand_one_alias {
 665        my $alias = shift;
 666        if ($EXPANDED_ALIASES{$alias}) {
 667                die "fatal: alias '$alias' expands to itself\n";
 668        }
 669        local $EXPANDED_ALIASES{$alias} = 1;
 670        return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 671}
 672
 673@to = expand_aliases(@to);
 674@to = (map { sanitize_address($_) } @to);
 675@initial_cc = expand_aliases(@initial_cc);
 676@bcclist = expand_aliases(@bcclist);
 677
 678if ($thread && !defined $initial_reply_to && $prompting) {
 679        $initial_reply_to = ask(
 680                "Message-ID to be used as In-Reply-To for the first email? ");
 681}
 682if (defined $initial_reply_to) {
 683        $initial_reply_to =~ s/^\s*<?//;
 684        $initial_reply_to =~ s/>?\s*$//;
 685        $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 686}
 687
 688if (!defined $smtp_server) {
 689        foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 690                if (-x $_) {
 691                        $smtp_server = $_;
 692                        last;
 693                }
 694        }
 695        $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 696}
 697
 698if ($compose && $compose > 0) {
 699        @files = ($compose_filename . ".final", @files);
 700}
 701
 702# Variables we set as part of the loop over files
 703our ($message_id, %mail, $subject, $reply_to, $references, $message,
 704        $needs_confirm, $message_num, $ask_default);
 705
 706sub extract_valid_address {
 707        my $address = shift;
 708        my $local_part_regexp = '[^<>"\s@]+';
 709        my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
 710
 711        # check for a local address:
 712        return $address if ($address =~ /^($local_part_regexp)$/);
 713
 714        $address =~ s/^\s*<(.*)>\s*$/$1/;
 715        if ($have_email_valid) {
 716                return scalar Email::Valid->address($address);
 717        } else {
 718                # less robust/correct than the monster regexp in Email::Valid,
 719                # but still does a 99% job, and one less dependency
 720                $address =~ /($local_part_regexp\@$domain_regexp)/;
 721                return $1;
 722        }
 723}
 724
 725# Usually don't need to change anything below here.
 726
 727# we make a "fake" message id by taking the current number
 728# of seconds since the beginning of Unix time and tacking on
 729# a random number to the end, in case we are called quicker than
 730# 1 second since the last time we were called.
 731
 732# We'll setup a template for the message id, using the "from" address:
 733
 734my ($message_id_stamp, $message_id_serial);
 735sub make_message_id
 736{
 737        my $uniq;
 738        if (!defined $message_id_stamp) {
 739                $message_id_stamp = sprintf("%s-%s", time, $$);
 740                $message_id_serial = 0;
 741        }
 742        $message_id_serial++;
 743        $uniq = "$message_id_stamp-$message_id_serial";
 744
 745        my $du_part;
 746        for ($sender, $repocommitter, $repoauthor) {
 747                $du_part = extract_valid_address(sanitize_address($_));
 748                last if (defined $du_part and $du_part ne '');
 749        }
 750        if (not defined $du_part or $du_part eq '') {
 751                use Sys::Hostname qw();
 752                $du_part = 'user@' . Sys::Hostname::hostname();
 753        }
 754        my $message_id_template = "<%s-git-send-email-%s>";
 755        $message_id = sprintf($message_id_template, $uniq, $du_part);
 756        #print "new message id = $message_id\n"; # Was useful for debugging
 757}
 758
 759
 760
 761$time = time - scalar $#files;
 762
 763sub unquote_rfc2047 {
 764        local ($_) = @_;
 765        my $encoding;
 766        if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
 767                $encoding = $1;
 768                s/_/ /g;
 769                s/=([0-9A-F]{2})/chr(hex($1))/eg;
 770        }
 771        return wantarray ? ($_, $encoding) : $_;
 772}
 773
 774sub quote_rfc2047 {
 775        local $_ = shift;
 776        my $encoding = shift || 'UTF-8';
 777        s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 778        s/(.*)/=\?$encoding\?q\?$1\?=/;
 779        return $_;
 780}
 781
 782sub is_rfc2047_quoted {
 783        my $s = shift;
 784        my $token = '[^][()<>@,;:"\/?.= \000-\037\177-\377]+';
 785        my $encoded_text = '[!->@-~]+';
 786        length($s) <= 75 &&
 787        $s =~ m/^(?:"[[:ascii:]]*"|=\?$token\?$token\?$encoded_text\?=)$/o;
 788}
 789
 790# use the simplest quoting being able to handle the recipient
 791sub sanitize_address
 792{
 793        my ($recipient) = @_;
 794        my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 795
 796        if (not $recipient_name) {
 797                return "$recipient";
 798        }
 799
 800        # if recipient_name is already quoted, do nothing
 801        if (is_rfc2047_quoted($recipient_name)) {
 802                return $recipient;
 803        }
 804
 805        # rfc2047 is needed if a non-ascii char is included
 806        if ($recipient_name =~ /[^[:ascii:]]/) {
 807                $recipient_name =~ s/^"(.*)"$/$1/;
 808                $recipient_name = quote_rfc2047($recipient_name);
 809        }
 810
 811        # double quotes are needed if specials or CTLs are included
 812        elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 813                $recipient_name =~ s/(["\\\r])/\\$1/g;
 814                $recipient_name = "\"$recipient_name\"";
 815        }
 816
 817        return "$recipient_name $recipient_addr";
 818
 819}
 820
 821# Returns 1 if the message was sent, and 0 otherwise.
 822# In actuality, the whole program dies when there
 823# is an error sending a message.
 824
 825sub send_message
 826{
 827        my @recipients = unique_email_list(@to);
 828        @cc = (grep { my $cc = extract_valid_address($_);
 829                      not grep { $cc eq $_ } @recipients
 830                    }
 831               map { sanitize_address($_) }
 832               @cc);
 833        my $to = join (",\n\t", @recipients);
 834        @recipients = unique_email_list(@recipients,@cc,@bcclist);
 835        @recipients = (map { extract_valid_address($_) } @recipients);
 836        my $date = format_2822_time($time++);
 837        my $gitversion = '@@GIT_VERSION@@';
 838        if ($gitversion =~ m/..GIT_VERSION../) {
 839            $gitversion = Git::version();
 840        }
 841
 842        my $cc = join(",\n\t", unique_email_list(@cc));
 843        my $ccline = "";
 844        if ($cc ne '') {
 845                $ccline = "\nCc: $cc";
 846        }
 847        my $sanitized_sender = sanitize_address($sender);
 848        make_message_id() unless defined($message_id);
 849
 850        my $header = "From: $sanitized_sender
 851To: $to${ccline}
 852Subject: $subject
 853Date: $date
 854Message-Id: $message_id
 855X-Mailer: git-send-email $gitversion
 856";
 857        if ($reply_to) {
 858
 859                $header .= "In-Reply-To: $reply_to\n";
 860                $header .= "References: $references\n";
 861        }
 862        if (@xh) {
 863                $header .= join("\n", @xh) . "\n";
 864        }
 865
 866        my @sendmail_parameters = ('-i', @recipients);
 867        my $raw_from = $sanitized_sender;
 868        $raw_from = $envelope_sender if (defined $envelope_sender);
 869        $raw_from = extract_valid_address($raw_from);
 870        unshift (@sendmail_parameters,
 871                        '-f', $raw_from) if(defined $envelope_sender);
 872
 873        if ($needs_confirm && !$dry_run) {
 874                print "\n$header\n";
 875                if ($needs_confirm eq "inform") {
 876                        $confirm_unconfigured = 0; # squelch this message for the rest of this run
 877                        $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
 878                        print "    The Cc list above has been expanded by additional\n";
 879                        print "    addresses found in the patch commit message. By default\n";
 880                        print "    send-email prompts before sending whenever this occurs.\n";
 881                        print "    This behavior is controlled by the sendemail.confirm\n";
 882                        print "    configuration setting.\n";
 883                        print "\n";
 884                        print "    For additional information, run 'git send-email --help'.\n";
 885                        print "    To retain the current behavior, but squelch this message,\n";
 886                        print "    run 'git config --global sendemail.confirm auto'.\n\n";
 887                }
 888                $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ",
 889                         valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
 890                         default => $ask_default);
 891                die "Send this email reply required" unless defined $_;
 892                if (/^n/i) {
 893                        return 0;
 894                } elsif (/^q/i) {
 895                        cleanup_compose_files();
 896                        exit(0);
 897                } elsif (/^a/i) {
 898                        $confirm = 'never';
 899                }
 900        }
 901
 902        if ($dry_run) {
 903                # We don't want to send the email.
 904        } elsif ($smtp_server =~ m#^/#) {
 905                my $pid = open my $sm, '|-';
 906                defined $pid or die $!;
 907                if (!$pid) {
 908                        exec($smtp_server, @sendmail_parameters) or die $!;
 909                }
 910                print $sm "$header\n$message";
 911                close $sm or die $?;
 912        } else {
 913
 914                if (!defined $smtp_server) {
 915                        die "The required SMTP server is not properly defined."
 916                }
 917
 918                if ($smtp_encryption eq 'ssl') {
 919                        $smtp_server_port ||= 465; # ssmtp
 920                        require Net::SMTP::SSL;
 921                        $smtp ||= Net::SMTP::SSL->new($smtp_server, Port => $smtp_server_port);
 922                }
 923                else {
 924                        require Net::SMTP;
 925                        $smtp ||= Net::SMTP->new((defined $smtp_server_port)
 926                                                 ? "$smtp_server:$smtp_server_port"
 927                                                 : $smtp_server);
 928                        if ($smtp_encryption eq 'tls' && $smtp) {
 929                                require Net::SMTP::SSL;
 930                                $smtp->command('STARTTLS');
 931                                $smtp->response();
 932                                if ($smtp->code == 220) {
 933                                        $smtp = Net::SMTP::SSL->start_SSL($smtp)
 934                                                or die "STARTTLS failed! ".$smtp->message;
 935                                        $smtp_encryption = '';
 936                                        # Send EHLO again to receive fresh
 937                                        # supported commands
 938                                        $smtp->hello();
 939                                } else {
 940                                        die "Server does not support STARTTLS! ".$smtp->message;
 941                                }
 942                        }
 943                }
 944
 945                if (!$smtp) {
 946                        die "Unable to initialize SMTP properly.  Is there something wrong with your config?";
 947                }
 948
 949                if (defined $smtp_authuser) {
 950
 951                        if (!defined $smtp_authpass) {
 952
 953                                system "stty -echo";
 954
 955                                do {
 956                                        print "Password: ";
 957                                        $_ = <STDIN>;
 958                                        print "\n";
 959                                } while (!defined $_);
 960
 961                                chomp($smtp_authpass = $_);
 962
 963                                system "stty echo";
 964                        }
 965
 966                        $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
 967                }
 968
 969                $smtp->mail( $raw_from ) or die $smtp->message;
 970                $smtp->to( @recipients ) or die $smtp->message;
 971                $smtp->data or die $smtp->message;
 972                $smtp->datasend("$header\n$message") or die $smtp->message;
 973                $smtp->dataend() or die $smtp->message;
 974                $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message;
 975        }
 976        if ($quiet) {
 977                printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
 978        } else {
 979                print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
 980                if ($smtp_server !~ m#^/#) {
 981                        print "Server: $smtp_server\n";
 982                        print "MAIL FROM:<$raw_from>\n";
 983                        foreach my $entry (@recipients) {
 984                            print "RCPT TO:<$entry>\n";
 985                        }
 986                } else {
 987                        print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
 988                }
 989                print $header, "\n";
 990                if ($smtp) {
 991                        print "Result: ", $smtp->code, ' ',
 992                                ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
 993                } else {
 994                        print "Result: OK\n";
 995                }
 996        }
 997
 998        return 1;
 999}
1000
1001$reply_to = $initial_reply_to;
1002$references = $initial_reply_to || '';
1003$subject = $initial_subject;
1004$message_num = 0;
1005
1006foreach my $t (@files) {
1007        open(F,"<",$t) or die "can't open file $t";
1008
1009        my $author = undef;
1010        my $author_encoding;
1011        my $has_content_type;
1012        my $body_encoding;
1013        @cc = ();
1014        @xh = ();
1015        my $input_format = undef;
1016        my @header = ();
1017        $message = "";
1018        $message_num++;
1019        # First unfold multiline header fields
1020        while(<F>) {
1021                last if /^\s*$/;
1022                if (/^\s+\S/ and @header) {
1023                        chomp($header[$#header]);
1024                        s/^\s+/ /;
1025                        $header[$#header] .= $_;
1026            } else {
1027                        push(@header, $_);
1028                }
1029        }
1030        # Now parse the header
1031        foreach(@header) {
1032                if (/^From /) {
1033                        $input_format = 'mbox';
1034                        next;
1035                }
1036                chomp;
1037                if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1038                        $input_format = 'mbox';
1039                }
1040
1041                if (defined $input_format && $input_format eq 'mbox') {
1042                        if (/^Subject:\s+(.*)$/) {
1043                                $subject = $1;
1044                        }
1045                        elsif (/^From:\s+(.*)$/) {
1046                                ($author, $author_encoding) = unquote_rfc2047($1);
1047                                next if $suppress_cc{'author'};
1048                                next if $suppress_cc{'self'} and $author eq $sender;
1049                                printf("(mbox) Adding cc: %s from line '%s'\n",
1050                                        $1, $_) unless $quiet;
1051                                push @cc, $1;
1052                        }
1053                        elsif (/^Cc:\s+(.*)$/) {
1054                                foreach my $addr (parse_address_line($1)) {
1055                                        if (unquote_rfc2047($addr) eq $sender) {
1056                                                next if ($suppress_cc{'self'});
1057                                        } else {
1058                                                next if ($suppress_cc{'cc'});
1059                                        }
1060                                        printf("(mbox) Adding cc: %s from line '%s'\n",
1061                                                $addr, $_) unless $quiet;
1062                                        push @cc, $addr;
1063                                }
1064                        }
1065                        elsif (/^Content-type:/i) {
1066                                $has_content_type = 1;
1067                                if (/charset="?([^ "]+)/) {
1068                                        $body_encoding = $1;
1069                                }
1070                                push @xh, $_;
1071                        }
1072                        elsif (/^Message-Id: (.*)/i) {
1073                                $message_id = $1;
1074                        }
1075                        elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
1076                                push @xh, $_;
1077                        }
1078
1079                } else {
1080                        # In the traditional
1081                        # "send lots of email" format,
1082                        # line 1 = cc
1083                        # line 2 = subject
1084                        # So let's support that, too.
1085                        $input_format = 'lots';
1086                        if (@cc == 0 && !$suppress_cc{'cc'}) {
1087                                printf("(non-mbox) Adding cc: %s from line '%s'\n",
1088                                        $_, $_) unless $quiet;
1089                                push @cc, $_;
1090                        } elsif (!defined $subject) {
1091                                $subject = $_;
1092                        }
1093                }
1094        }
1095        # Now parse the message body
1096        while(<F>) {
1097                $message .=  $_;
1098                if (/^(Signed-off-by|Cc): (.*)$/i) {
1099                        chomp;
1100                        my ($what, $c) = ($1, $2);
1101                        chomp $c;
1102                        if ($c eq $sender) {
1103                                next if ($suppress_cc{'self'});
1104                        } else {
1105                                next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1106                                next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1107                        }
1108                        push @cc, $c;
1109                        printf("(body) Adding cc: %s from line '%s'\n",
1110                                $c, $_) unless $quiet;
1111                }
1112        }
1113        close F;
1114
1115        if (defined $cc_cmd && !$suppress_cc{'cccmd'}) {
1116                open(F, "$cc_cmd \Q$t\E |")
1117                        or die "(cc-cmd) Could not execute '$cc_cmd'";
1118                while(<F>) {
1119                        my $c = $_;
1120                        $c =~ s/^\s*//g;
1121                        $c =~ s/\n$//g;
1122                        next if ($c eq $sender and $suppress_from);
1123                        push @cc, $c;
1124                        printf("(cc-cmd) Adding cc: %s from: '%s'\n",
1125                                $c, $cc_cmd) unless $quiet;
1126                }
1127                close F
1128                        or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
1129        }
1130
1131        if (defined $author and $author ne $sender) {
1132                $message = "From: $author\n\n$message";
1133                if (defined $author_encoding) {
1134                        if ($has_content_type) {
1135                                if ($body_encoding eq $author_encoding) {
1136                                        # ok, we already have the right encoding
1137                                }
1138                                else {
1139                                        # uh oh, we should re-encode
1140                                }
1141                        }
1142                        else {
1143                                push @xh,
1144                                  'MIME-Version: 1.0',
1145                                  "Content-Type: text/plain; charset=$author_encoding",
1146                                  'Content-Transfer-Encoding: 8bit';
1147                        }
1148                }
1149        }
1150
1151        $needs_confirm = (
1152                $confirm eq "always" or
1153                ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1154                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1155        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1156
1157        @cc = (@initial_cc, @cc);
1158
1159        my $message_was_sent = send_message();
1160
1161        # set up for the next message
1162        if ($thread && $message_was_sent &&
1163                ($chain_reply_to || !defined $reply_to || length($reply_to) == 0)) {
1164                $reply_to = $message_id;
1165                if (length $references > 0) {
1166                        $references .= "\n $message_id";
1167                } else {
1168                        $references = "$message_id";
1169                }
1170        }
1171        $message_id = undef;
1172}
1173
1174cleanup_compose_files();
1175
1176sub cleanup_compose_files() {
1177        unlink($compose_filename, $compose_filename . ".final") if $compose;
1178}
1179
1180$smtp->quit if $smtp;
1181
1182sub unique_email_list(@) {
1183        my %seen;
1184        my @emails;
1185
1186        foreach my $entry (@_) {
1187                if (my $clean = extract_valid_address($entry)) {
1188                        $seen{$clean} ||= 0;
1189                        next if $seen{$clean}++;
1190                        push @emails, $entry;
1191                } else {
1192                        print STDERR "W: unable to extract a valid address",
1193                                        " from: $entry\n";
1194                }
1195        }
1196        return @emails;
1197}
1198
1199sub validate_patch {
1200        my $fn = shift;
1201        open(my $fh, '<', $fn)
1202                or die "unable to open $fn: $!\n";
1203        while (my $line = <$fh>) {
1204                if (length($line) > 998) {
1205                        return "$.: patch contains a line longer than 998 characters";
1206                }
1207        }
1208        return undef;
1209}
1210
1211sub file_has_nonascii {
1212        my $fn = shift;
1213        open(my $fh, '<', $fn)
1214                or die "unable to open $fn: $!\n";
1215        while (my $line = <$fh>) {
1216                return 1 if $line =~ /[^[:ascii:]]/;
1217        }
1218        return 0;
1219}