git-send-email.perlon commit send-email: automatic envelope sender (c89e324)
   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 = $ENV{GIT_EDITOR} || Git::config(@repo, "core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 166sub do_edit {
 167        if (defined($multiedit) && !$multiedit) {
 168                map {
 169                        system('sh', '-c', $editor.' "$@"', $editor, $_);
 170                        if (($? & 127) || ($? >> 8)) {
 171                                die("the editor exited uncleanly, aborting everything");
 172                        }
 173                } @_;
 174        } else {
 175                system('sh', '-c', $editor.' "$@"', $editor, @_);
 176                if (($? & 127) || ($? >> 8)) {
 177                        die("the editor exited uncleanly, aborting everything");
 178                }
 179        }
 180}
 181
 182# Variables with corresponding config settings
 183my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
 184my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
 185my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
 186my ($validate, $confirm);
 187my (@suppress_cc);
 188
 189my %config_bool_settings = (
 190    "thread" => [\$thread, 1],
 191    "chainreplyto" => [\$chain_reply_to, 1],
 192    "suppressfrom" => [\$suppress_from, undef],
 193    "signedoffbycc" => [\$signed_off_by_cc, undef],
 194    "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 195    "validate" => [\$validate, 1],
 196);
 197
 198my %config_settings = (
 199    "smtpserver" => \$smtp_server,
 200    "smtpserverport" => \$smtp_server_port,
 201    "smtpuser" => \$smtp_authuser,
 202    "smtppass" => \$smtp_authpass,
 203    "to" => \@to,
 204    "cc" => \@initial_cc,
 205    "cccmd" => \$cc_cmd,
 206    "aliasfiletype" => \$aliasfiletype,
 207    "bcc" => \@bcclist,
 208    "aliasesfile" => \@alias_files,
 209    "suppresscc" => \@suppress_cc,
 210    "envelopesender" => \$envelope_sender,
 211    "multiedit" => \$multiedit,
 212    "confirm"   => \$confirm,
 213    "from" => \$sender,
 214);
 215
 216# Handle Uncouth Termination
 217sub signal_handler {
 218
 219        # Make text normal
 220        print color("reset"), "\n";
 221
 222        # SMTP password masked
 223        system "stty echo";
 224
 225        # tmp files from --compose
 226        if (defined $compose_filename) {
 227                if (-e $compose_filename) {
 228                        print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 229                }
 230                if (-e ($compose_filename . ".final")) {
 231                        print "'$compose_filename.final' contains the composed email.\n"
 232                }
 233        }
 234
 235        exit;
 236};
 237
 238$SIG{TERM} = \&signal_handler;
 239$SIG{INT}  = \&signal_handler;
 240
 241# Begin by accumulating all the variables (defined above), that we will end up
 242# needing, first, from the command line:
 243
 244my $rc = GetOptions("sender|from=s" => \$sender,
 245                    "in-reply-to=s" => \$initial_reply_to,
 246                    "subject=s" => \$initial_subject,
 247                    "to=s" => \@to,
 248                    "cc=s" => \@initial_cc,
 249                    "bcc=s" => \@bcclist,
 250                    "chain-reply-to!" => \$chain_reply_to,
 251                    "smtp-server=s" => \$smtp_server,
 252                    "smtp-server-port=s" => \$smtp_server_port,
 253                    "smtp-user=s" => \$smtp_authuser,
 254                    "smtp-pass:s" => \$smtp_authpass,
 255                    "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 256                    "smtp-encryption=s" => \$smtp_encryption,
 257                    "identity=s" => \$identity,
 258                    "annotate" => \$annotate,
 259                    "compose" => \$compose,
 260                    "quiet" => \$quiet,
 261                    "cc-cmd=s" => \$cc_cmd,
 262                    "suppress-from!" => \$suppress_from,
 263                    "suppress-cc=s" => \@suppress_cc,
 264                    "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 265                    "confirm=s" => \$confirm,
 266                    "dry-run" => \$dry_run,
 267                    "envelope-sender=s" => \$envelope_sender,
 268                    "thread!" => \$thread,
 269                    "validate!" => \$validate,
 270                    "format-patch!" => \$format_patch,
 271         );
 272
 273unless ($rc) {
 274    usage();
 275}
 276
 277die "Cannot run git format-patch from outside a repository\n"
 278        if $format_patch and not $repo;
 279
 280# Now, let's fill any that aren't set in with defaults:
 281
 282sub read_config {
 283        my ($prefix) = @_;
 284
 285        foreach my $setting (keys %config_bool_settings) {
 286                my $target = $config_bool_settings{$setting}->[0];
 287                $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 288        }
 289
 290        foreach my $setting (keys %config_settings) {
 291                my $target = $config_settings{$setting};
 292                if (ref($target) eq "ARRAY") {
 293                        unless (@$target) {
 294                                my @values = Git::config(@repo, "$prefix.$setting");
 295                                @$target = @values if (@values && defined $values[0]);
 296                        }
 297                }
 298                else {
 299                        $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 300                }
 301        }
 302
 303        if (!defined $smtp_encryption) {
 304                my $enc = Git::config(@repo, "$prefix.smtpencryption");
 305                if (defined $enc) {
 306                        $smtp_encryption = $enc;
 307                } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 308                        $smtp_encryption = 'ssl';
 309                }
 310        }
 311}
 312
 313# read configuration from [sendemail "$identity"], fall back on [sendemail]
 314$identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 315read_config("sendemail.$identity") if (defined $identity);
 316read_config("sendemail");
 317
 318# fall back on builtin bool defaults
 319foreach my $setting (values %config_bool_settings) {
 320        ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 321}
 322
 323# 'default' encryption is none -- this only prevents a warning
 324$smtp_encryption = '' unless (defined $smtp_encryption);
 325
 326# Set CC suppressions
 327my(%suppress_cc);
 328if (@suppress_cc) {
 329        foreach my $entry (@suppress_cc) {
 330                die "Unknown --suppress-cc field: '$entry'\n"
 331                        unless $entry =~ /^(all|cccmd|cc|author|self|sob|body|bodycc)$/;
 332                $suppress_cc{$entry} = 1;
 333        }
 334}
 335
 336if ($suppress_cc{'all'}) {
 337        foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
 338                $suppress_cc{$entry} = 1;
 339        }
 340        delete $suppress_cc{'all'};
 341}
 342
 343# If explicit old-style ones are specified, they trump --suppress-cc.
 344$suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 345$suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 346
 347if ($suppress_cc{'body'}) {
 348        foreach my $entry (qw (sob bodycc)) {
 349                $suppress_cc{$entry} = 1;
 350        }
 351        delete $suppress_cc{'body'};
 352}
 353
 354# Set confirm's default value
 355my $confirm_unconfigured = !defined $confirm;
 356if ($confirm_unconfigured) {
 357        $confirm = scalar %suppress_cc ? 'compose' : 'auto';
 358};
 359die "Unknown --confirm setting: '$confirm'\n"
 360        unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
 361
 362# Debugging, print out the suppressions.
 363if (0) {
 364        print "suppressions:\n";
 365        foreach my $entry (keys %suppress_cc) {
 366                printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 367        }
 368}
 369
 370my ($repoauthor, $repocommitter);
 371($repoauthor) = Git::ident_person(@repo, 'author');
 372($repocommitter) = Git::ident_person(@repo, 'committer');
 373
 374# Verify the user input
 375
 376foreach my $entry (@to) {
 377        die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 378}
 379
 380foreach my $entry (@initial_cc) {
 381        die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 382}
 383
 384foreach my $entry (@bcclist) {
 385        die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 386}
 387
 388sub parse_address_line {
 389        if ($have_mail_address) {
 390                return map { $_->format } Mail::Address->parse($_[0]);
 391        } else {
 392                return split_addrs($_[0]);
 393        }
 394}
 395
 396sub split_addrs {
 397        return quotewords('\s*,\s*', 1, @_);
 398}
 399
 400my %aliases;
 401my %parse_alias = (
 402        # multiline formats can be supported in the future
 403        mutt => sub { my $fh = shift; while (<$fh>) {
 404                if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
 405                        my ($alias, $addr) = ($1, $2);
 406                        $addr =~ s/#.*$//; # mutt allows # comments
 407                         # commas delimit multiple addresses
 408                        $aliases{$alias} = [ split_addrs($addr) ];
 409                }}},
 410        mailrc => sub { my $fh = shift; while (<$fh>) {
 411                if (/^alias\s+(\S+)\s+(.*)$/) {
 412                        # spaces delimit multiple addresses
 413                        $aliases{$1} = [ quotewords('\s+', 0, $2) ];
 414                }}},
 415        pine => sub { my $fh = shift; my $f='\t[^\t]*';
 416                for (my $x = ''; defined($x); $x = $_) {
 417                        chomp $x;
 418                        $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 419                        $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 420                        $aliases{$1} = [ split_addrs($2) ];
 421                }},
 422        elm => sub  { my $fh = shift;
 423                      while (<$fh>) {
 424                          if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
 425                              my ($alias, $addr) = ($1, $2);
 426                               $aliases{$alias} = [ split_addrs($addr) ];
 427                          }
 428                      } },
 429
 430        gnus => sub { my $fh = shift; while (<$fh>) {
 431                if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 432                        $aliases{$1} = [ $2 ];
 433                }}}
 434);
 435
 436if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 437        foreach my $file (@alias_files) {
 438                open my $fh, '<', $file or die "opening $file: $!\n";
 439                $parse_alias{$aliasfiletype}->($fh);
 440                close $fh;
 441        }
 442}
 443
 444($sender) = expand_aliases($sender) if defined $sender;
 445
 446# returns 1 if the conflict must be solved using it as a format-patch argument
 447sub check_file_rev_conflict($) {
 448        return unless $repo;
 449        my $f = shift;
 450        try {
 451                $repo->command('rev-parse', '--verify', '--quiet', $f);
 452                if (defined($format_patch)) {
 453                        return $format_patch;
 454                }
 455                die(<<EOF);
 456File '$f' exists but it could also be the range of commits
 457to produce patches for.  Please disambiguate by...
 458
 459    * Saying "./$f" if you mean a file; or
 460    * Giving --format-patch option if you mean a range.
 461EOF
 462        } catch Git::Error::Command with {
 463                return 0;
 464        }
 465}
 466
 467# Now that all the defaults are set, process the rest of the command line
 468# arguments and collect up the files that need to be processed.
 469my @rev_list_opts;
 470while (defined(my $f = shift @ARGV)) {
 471        if ($f eq "--") {
 472                push @rev_list_opts, "--", @ARGV;
 473                @ARGV = ();
 474        } elsif (-d $f and !check_file_rev_conflict($f)) {
 475                opendir(DH,$f)
 476                        or die "Failed to opendir $f: $!";
 477
 478                push @files, grep { -f $_ } map { +$f . "/" . $_ }
 479                                sort readdir(DH);
 480                closedir(DH);
 481        } elsif ((-f $f or -p $f) and !check_file_rev_conflict($f)) {
 482                push @files, $f;
 483        } else {
 484                push @rev_list_opts, $f;
 485        }
 486}
 487
 488if (@rev_list_opts) {
 489        die "Cannot run git format-patch from outside a repository\n"
 490                unless $repo;
 491        push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 492}
 493
 494if ($validate) {
 495        foreach my $f (@files) {
 496                unless (-p $f) {
 497                        my $error = validate_patch($f);
 498                        $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 499                }
 500        }
 501}
 502
 503if (@files) {
 504        unless ($quiet) {
 505                print $_,"\n" for (@files);
 506        }
 507} else {
 508        print STDERR "\nNo patch files specified!\n\n";
 509        usage();
 510}
 511
 512sub get_patch_subject($) {
 513        my $fn = shift;
 514        open (my $fh, '<', $fn);
 515        while (my $line = <$fh>) {
 516                next unless ($line =~ /^Subject: (.*)$/);
 517                close $fh;
 518                return "GIT: $1\n";
 519        }
 520        close $fh;
 521        die "No subject line in $fn ?";
 522}
 523
 524if ($compose) {
 525        # Note that this does not need to be secure, but we will make a small
 526        # effort to have it be unique
 527        $compose_filename = ($repo ?
 528                tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 529                tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 530        open(C,">",$compose_filename)
 531                or die "Failed to open for writing $compose_filename: $!";
 532
 533
 534        my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 535        my $tpl_subject = $initial_subject || '';
 536        my $tpl_reply_to = $initial_reply_to || '';
 537
 538        print C <<EOT;
 539From $tpl_sender # This line is ignored.
 540GIT: Lines beginning in "GIT:" will be removed.
 541GIT: Consider including an overall diffstat or table of contents
 542GIT: for the patch you are writing.
 543GIT:
 544GIT: Clear the body content if you don't wish to send a summary.
 545From: $tpl_sender
 546Subject: $tpl_subject
 547In-Reply-To: $tpl_reply_to
 548
 549EOT
 550        for my $f (@files) {
 551                print C get_patch_subject($f);
 552        }
 553        close(C);
 554
 555        if ($annotate) {
 556                do_edit($compose_filename, @files);
 557        } else {
 558                do_edit($compose_filename);
 559        }
 560
 561        open(C2,">",$compose_filename . ".final")
 562                or die "Failed to open $compose_filename.final : " . $!;
 563
 564        open(C,"<",$compose_filename)
 565                or die "Failed to open $compose_filename : " . $!;
 566
 567        my $need_8bit_cte = file_has_nonascii($compose_filename);
 568        my $in_body = 0;
 569        my $summary_empty = 1;
 570        while(<C>) {
 571                next if m/^GIT:/;
 572                if ($in_body) {
 573                        $summary_empty = 0 unless (/^\n$/);
 574                } elsif (/^\n$/) {
 575                        $in_body = 1;
 576                        if ($need_8bit_cte) {
 577                                print C2 "MIME-Version: 1.0\n",
 578                                         "Content-Type: text/plain; ",
 579                                           "charset=UTF-8\n",
 580                                         "Content-Transfer-Encoding: 8bit\n";
 581                        }
 582                } elsif (/^MIME-Version:/i) {
 583                        $need_8bit_cte = 0;
 584                } elsif (/^Subject:\s*(.+)\s*$/i) {
 585                        $initial_subject = $1;
 586                        my $subject = $initial_subject;
 587                        $_ = "Subject: " .
 588                                ($subject =~ /[^[:ascii:]]/ ?
 589                                 quote_rfc2047($subject) :
 590                                 $subject) .
 591                                "\n";
 592                } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 593                        $initial_reply_to = $1;
 594                        next;
 595                } elsif (/^From:\s*(.+)\s*$/i) {
 596                        $sender = $1;
 597                        next;
 598                } elsif (/^(?:To|Cc|Bcc):/i) {
 599                        print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 600                        next;
 601                }
 602                print C2 $_;
 603        }
 604        close(C);
 605        close(C2);
 606
 607        if ($summary_empty) {
 608                print "Summary email is empty, skipping it\n";
 609                $compose = -1;
 610        }
 611} elsif ($annotate) {
 612        do_edit(@files);
 613}
 614
 615sub ask {
 616        my ($prompt, %arg) = @_;
 617        my $valid_re = $arg{valid_re};
 618        my $default = $arg{default};
 619        my $resp;
 620        my $i = 0;
 621        return defined $default ? $default : undef
 622                unless defined $term->IN and defined fileno($term->IN) and
 623                       defined $term->OUT and defined fileno($term->OUT);
 624        while ($i++ < 10) {
 625                $resp = $term->readline($prompt);
 626                if (!defined $resp) { # EOF
 627                        print "\n";
 628                        return defined $default ? $default : undef;
 629                }
 630                if ($resp eq '' and defined $default) {
 631                        return $default;
 632                }
 633                if (!defined $valid_re or $resp =~ /$valid_re/) {
 634                        return $resp;
 635                }
 636        }
 637        return undef;
 638}
 639
 640my $prompting = 0;
 641if (!defined $sender) {
 642        $sender = $repoauthor || $repocommitter || '';
 643        $sender = ask("Who should the emails appear to be from? [$sender] ",
 644                      default => $sender);
 645        print "Emails will be sent from: ", $sender, "\n";
 646        $prompting++;
 647}
 648
 649if (!@to) {
 650        my $to = ask("Who should the emails be sent to? ");
 651        push @to, parse_address_line($to) if defined $to; # sanitized/validated later
 652        $prompting++;
 653}
 654
 655sub expand_aliases {
 656        return map { expand_one_alias($_) } @_;
 657}
 658
 659my %EXPANDED_ALIASES;
 660sub expand_one_alias {
 661        my $alias = shift;
 662        if ($EXPANDED_ALIASES{$alias}) {
 663                die "fatal: alias '$alias' expands to itself\n";
 664        }
 665        local $EXPANDED_ALIASES{$alias} = 1;
 666        return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 667}
 668
 669@to = expand_aliases(@to);
 670@to = (map { sanitize_address($_) } @to);
 671@initial_cc = expand_aliases(@initial_cc);
 672@bcclist = expand_aliases(@bcclist);
 673
 674if ($thread && !defined $initial_reply_to && $prompting) {
 675        $initial_reply_to = ask(
 676                "Message-ID to be used as In-Reply-To for the first email? ");
 677}
 678if (defined $initial_reply_to) {
 679        $initial_reply_to =~ s/^\s*<?//;
 680        $initial_reply_to =~ s/>?\s*$//;
 681        $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 682}
 683
 684if (!defined $smtp_server) {
 685        foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 686                if (-x $_) {
 687                        $smtp_server = $_;
 688                        last;
 689                }
 690        }
 691        $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 692}
 693
 694if ($compose && $compose > 0) {
 695        @files = ($compose_filename . ".final", @files);
 696}
 697
 698# Variables we set as part of the loop over files
 699our ($message_id, %mail, $subject, $reply_to, $references, $message,
 700        $needs_confirm, $message_num, $ask_default);
 701
 702sub extract_valid_address {
 703        my $address = shift;
 704        my $local_part_regexp = '[^<>"\s@]+';
 705        my $domain_regexp = '[^.<>"\s@]+(?:\.[^.<>"\s@]+)+';
 706
 707        # check for a local address:
 708        return $address if ($address =~ /^($local_part_regexp)$/);
 709
 710        $address =~ s/^\s*<(.*)>\s*$/$1/;
 711        if ($have_email_valid) {
 712                return scalar Email::Valid->address($address);
 713        } else {
 714                # less robust/correct than the monster regexp in Email::Valid,
 715                # but still does a 99% job, and one less dependency
 716                $address =~ /($local_part_regexp\@$domain_regexp)/;
 717                return $1;
 718        }
 719}
 720
 721# Usually don't need to change anything below here.
 722
 723# we make a "fake" message id by taking the current number
 724# of seconds since the beginning of Unix time and tacking on
 725# a random number to the end, in case we are called quicker than
 726# 1 second since the last time we were called.
 727
 728# We'll setup a template for the message id, using the "from" address:
 729
 730my ($message_id_stamp, $message_id_serial);
 731sub make_message_id
 732{
 733        my $uniq;
 734        if (!defined $message_id_stamp) {
 735                $message_id_stamp = sprintf("%s-%s", time, $$);
 736                $message_id_serial = 0;
 737        }
 738        $message_id_serial++;
 739        $uniq = "$message_id_stamp-$message_id_serial";
 740
 741        my $du_part;
 742        for ($sender, $repocommitter, $repoauthor) {
 743                $du_part = extract_valid_address(sanitize_address($_));
 744                last if (defined $du_part and $du_part ne '');
 745        }
 746        if (not defined $du_part or $du_part eq '') {
 747                use Sys::Hostname qw();
 748                $du_part = 'user@' . Sys::Hostname::hostname();
 749        }
 750        my $message_id_template = "<%s-git-send-email-%s>";
 751        $message_id = sprintf($message_id_template, $uniq, $du_part);
 752        #print "new message id = $message_id\n"; # Was useful for debugging
 753}
 754
 755
 756
 757$time = time - scalar $#files;
 758
 759sub unquote_rfc2047 {
 760        local ($_) = @_;
 761        my $encoding;
 762        if (s/=\?([^?]+)\?q\?(.*)\?=/$2/g) {
 763                $encoding = $1;
 764                s/_/ /g;
 765                s/=([0-9A-F]{2})/chr(hex($1))/eg;
 766        }
 767        return wantarray ? ($_, $encoding) : $_;
 768}
 769
 770sub quote_rfc2047 {
 771        local $_ = shift;
 772        my $encoding = shift || 'UTF-8';
 773        s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 774        s/(.*)/=\?$encoding\?q\?$1\?=/;
 775        return $_;
 776}
 777
 778sub is_rfc2047_quoted {
 779        my $s = shift;
 780        my $token = '[^][()<>@,;:"\/?.= \000-\037\177-\377]+';
 781        my $encoded_text = '[!->@-~]+';
 782        length($s) <= 75 &&
 783        $s =~ m/^(?:"[[:ascii:]]*"|=\?$token\?$token\?$encoded_text\?=)$/o;
 784}
 785
 786# use the simplest quoting being able to handle the recipient
 787sub sanitize_address
 788{
 789        my ($recipient) = @_;
 790        my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 791
 792        if (not $recipient_name) {
 793                return "$recipient";
 794        }
 795
 796        # if recipient_name is already quoted, do nothing
 797        if (is_rfc2047_quoted($recipient_name)) {
 798                return $recipient;
 799        }
 800
 801        # rfc2047 is needed if a non-ascii char is included
 802        if ($recipient_name =~ /[^[:ascii:]]/) {
 803                $recipient_name =~ s/^"(.*)"$/$1/;
 804                $recipient_name = quote_rfc2047($recipient_name);
 805        }
 806
 807        # double quotes are needed if specials or CTLs are included
 808        elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
 809                $recipient_name =~ s/(["\\\r])/\\$1/g;
 810                $recipient_name = "\"$recipient_name\"";
 811        }
 812
 813        return "$recipient_name $recipient_addr";
 814
 815}
 816
 817# Returns 1 if the message was sent, and 0 otherwise.
 818# In actuality, the whole program dies when there
 819# is an error sending a message.
 820
 821sub send_message
 822{
 823        my @recipients = unique_email_list(@to);
 824        @cc = (grep { my $cc = extract_valid_address($_);
 825                      not grep { $cc eq $_ } @recipients
 826                    }
 827               map { sanitize_address($_) }
 828               @cc);
 829        my $to = join (",\n\t", @recipients);
 830        @recipients = unique_email_list(@recipients,@cc,@bcclist);
 831        @recipients = (map { extract_valid_address($_) } @recipients);
 832        my $date = format_2822_time($time++);
 833        my $gitversion = '@@GIT_VERSION@@';
 834        if ($gitversion =~ m/..GIT_VERSION../) {
 835            $gitversion = Git::version();
 836        }
 837
 838        my $cc = join(", ", unique_email_list(@cc));
 839        my $ccline = "";
 840        if ($cc ne '') {
 841                $ccline = "\nCc: $cc";
 842        }
 843        my $sanitized_sender = sanitize_address($sender);
 844        make_message_id() unless defined($message_id);
 845
 846        my $header = "From: $sanitized_sender
 847To: $to${ccline}
 848Subject: $subject
 849Date: $date
 850Message-Id: $message_id
 851X-Mailer: git-send-email $gitversion
 852";
 853        if ($reply_to) {
 854
 855                $header .= "In-Reply-To: $reply_to\n";
 856                $header .= "References: $references\n";
 857        }
 858        if (@xh) {
 859                $header .= join("\n", @xh) . "\n";
 860        }
 861
 862        my @sendmail_parameters = ('-i', @recipients);
 863        my $raw_from = $sanitized_sender;
 864        if (defined $envelope_sender && $envelope_sender ne "auto") {
 865                $raw_from = $envelope_sender;
 866        }
 867        $raw_from = extract_valid_address($raw_from);
 868        unshift (@sendmail_parameters,
 869                        '-f', $raw_from) if(defined $envelope_sender);
 870
 871        if ($needs_confirm && !$dry_run) {
 872                print "\n$header\n";
 873                if ($needs_confirm eq "inform") {
 874                        $confirm_unconfigured = 0; # squelch this message for the rest of this run
 875                        $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
 876                        print "    The Cc list above has been expanded by additional\n";
 877                        print "    addresses found in the patch commit message. By default\n";
 878                        print "    send-email prompts before sending whenever this occurs.\n";
 879                        print "    This behavior is controlled by the sendemail.confirm\n";
 880                        print "    configuration setting.\n";
 881                        print "\n";
 882                        print "    For additional information, run 'git send-email --help'.\n";
 883                        print "    To retain the current behavior, but squelch this message,\n";
 884                        print "    run 'git config --global sendemail.confirm auto'.\n\n";
 885                }
 886                $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ",
 887                         valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
 888                         default => $ask_default);
 889                die "Send this email reply required" unless defined $_;
 890                if (/^n/i) {
 891                        return 0;
 892                } elsif (/^q/i) {
 893                        cleanup_compose_files();
 894                        exit(0);
 895                } elsif (/^a/i) {
 896                        $confirm = 'never';
 897                }
 898        }
 899
 900        if ($dry_run) {
 901                # We don't want to send the email.
 902        } elsif ($smtp_server =~ m#^/#) {
 903                my $pid = open my $sm, '|-';
 904                defined $pid or die $!;
 905                if (!$pid) {
 906                        exec($smtp_server, @sendmail_parameters) or die $!;
 907                }
 908                print $sm "$header\n$message";
 909                close $sm or die $?;
 910        } else {
 911
 912                if (!defined $smtp_server) {
 913                        die "The required SMTP server is not properly defined."
 914                }
 915
 916                if ($smtp_encryption eq 'ssl') {
 917                        $smtp_server_port ||= 465; # ssmtp
 918                        require Net::SMTP::SSL;
 919                        $smtp ||= Net::SMTP::SSL->new($smtp_server, Port => $smtp_server_port);
 920                }
 921                else {
 922                        require Net::SMTP;
 923                        $smtp ||= Net::SMTP->new((defined $smtp_server_port)
 924                                                 ? "$smtp_server:$smtp_server_port"
 925                                                 : $smtp_server);
 926                        if ($smtp_encryption eq 'tls' && $smtp) {
 927                                require Net::SMTP::SSL;
 928                                $smtp->command('STARTTLS');
 929                                $smtp->response();
 930                                if ($smtp->code == 220) {
 931                                        $smtp = Net::SMTP::SSL->start_SSL($smtp)
 932                                                or die "STARTTLS failed! ".$smtp->message;
 933                                        $smtp_encryption = '';
 934                                        # Send EHLO again to receive fresh
 935                                        # supported commands
 936                                        $smtp->hello();
 937                                } else {
 938                                        die "Server does not support STARTTLS! ".$smtp->message;
 939                                }
 940                        }
 941                }
 942
 943                if (!$smtp) {
 944                        die "Unable to initialize SMTP properly.  Is there something wrong with your config?";
 945                }
 946
 947                if (defined $smtp_authuser) {
 948
 949                        if (!defined $smtp_authpass) {
 950
 951                                system "stty -echo";
 952
 953                                do {
 954                                        print "Password: ";
 955                                        $_ = <STDIN>;
 956                                        print "\n";
 957                                } while (!defined $_);
 958
 959                                chomp($smtp_authpass = $_);
 960
 961                                system "stty echo";
 962                        }
 963
 964                        $auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
 965                }
 966
 967                $smtp->mail( $raw_from ) or die $smtp->message;
 968                $smtp->to( @recipients ) or die $smtp->message;
 969                $smtp->data or die $smtp->message;
 970                $smtp->datasend("$header\n$message") or die $smtp->message;
 971                $smtp->dataend() or die $smtp->message;
 972                $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message;
 973        }
 974        if ($quiet) {
 975                printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
 976        } else {
 977                print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
 978                if ($smtp_server !~ m#^/#) {
 979                        print "Server: $smtp_server\n";
 980                        print "MAIL FROM:<$raw_from>\n";
 981                        print "RCPT TO:".join(',',(map { "<$_>" } @recipients))."\n";
 982                } else {
 983                        print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
 984                }
 985                print $header, "\n";
 986                if ($smtp) {
 987                        print "Result: ", $smtp->code, ' ',
 988                                ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
 989                } else {
 990                        print "Result: OK\n";
 991                }
 992        }
 993
 994        return 1;
 995}
 996
 997$reply_to = $initial_reply_to;
 998$references = $initial_reply_to || '';
 999$subject = $initial_subject;
1000$message_num = 0;
1001
1002foreach my $t (@files) {
1003        open(F,"<",$t) or die "can't open file $t";
1004
1005        my $author = undef;
1006        my $author_encoding;
1007        my $has_content_type;
1008        my $body_encoding;
1009        @cc = ();
1010        @xh = ();
1011        my $input_format = undef;
1012        my @header = ();
1013        $message = "";
1014        $message_num++;
1015        # First unfold multiline header fields
1016        while(<F>) {
1017                last if /^\s*$/;
1018                if (/^\s+\S/ and @header) {
1019                        chomp($header[$#header]);
1020                        s/^\s+/ /;
1021                        $header[$#header] .= $_;
1022            } else {
1023                        push(@header, $_);
1024                }
1025        }
1026        # Now parse the header
1027        foreach(@header) {
1028                if (/^From /) {
1029                        $input_format = 'mbox';
1030                        next;
1031                }
1032                chomp;
1033                if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1034                        $input_format = 'mbox';
1035                }
1036
1037                if (defined $input_format && $input_format eq 'mbox') {
1038                        if (/^Subject:\s+(.*)$/) {
1039                                $subject = $1;
1040                        }
1041                        elsif (/^From:\s+(.*)$/) {
1042                                ($author, $author_encoding) = unquote_rfc2047($1);
1043                                next if $suppress_cc{'author'};
1044                                next if $suppress_cc{'self'} and $author eq $sender;
1045                                printf("(mbox) Adding cc: %s from line '%s'\n",
1046                                        $1, $_) unless $quiet;
1047                                push @cc, $1;
1048                        }
1049                        elsif (/^Cc:\s+(.*)$/) {
1050                                foreach my $addr (parse_address_line($1)) {
1051                                        if (unquote_rfc2047($addr) eq $sender) {
1052                                                next if ($suppress_cc{'self'});
1053                                        } else {
1054                                                next if ($suppress_cc{'cc'});
1055                                        }
1056                                        printf("(mbox) Adding cc: %s from line '%s'\n",
1057                                                $addr, $_) unless $quiet;
1058                                        push @cc, $addr;
1059                                }
1060                        }
1061                        elsif (/^Content-type:/i) {
1062                                $has_content_type = 1;
1063                                if (/charset="?([^ "]+)/) {
1064                                        $body_encoding = $1;
1065                                }
1066                                push @xh, $_;
1067                        }
1068                        elsif (/^Message-Id: (.*)/i) {
1069                                $message_id = $1;
1070                        }
1071                        elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
1072                                push @xh, $_;
1073                        }
1074
1075                } else {
1076                        # In the traditional
1077                        # "send lots of email" format,
1078                        # line 1 = cc
1079                        # line 2 = subject
1080                        # So let's support that, too.
1081                        $input_format = 'lots';
1082                        if (@cc == 0 && !$suppress_cc{'cc'}) {
1083                                printf("(non-mbox) Adding cc: %s from line '%s'\n",
1084                                        $_, $_) unless $quiet;
1085                                push @cc, $_;
1086                        } elsif (!defined $subject) {
1087                                $subject = $_;
1088                        }
1089                }
1090        }
1091        # Now parse the message body
1092        while(<F>) {
1093                $message .=  $_;
1094                if (/^(Signed-off-by|Cc): (.*)$/i) {
1095                        chomp;
1096                        my ($what, $c) = ($1, $2);
1097                        chomp $c;
1098                        if ($c eq $sender) {
1099                                next if ($suppress_cc{'self'});
1100                        } else {
1101                                next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1102                                next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1103                        }
1104                        push @cc, $c;
1105                        printf("(body) Adding cc: %s from line '%s'\n",
1106                                $c, $_) unless $quiet;
1107                }
1108        }
1109        close F;
1110
1111        if (defined $cc_cmd && !$suppress_cc{'cccmd'}) {
1112                open(F, "$cc_cmd \Q$t\E |")
1113                        or die "(cc-cmd) Could not execute '$cc_cmd'";
1114                while(<F>) {
1115                        my $c = $_;
1116                        $c =~ s/^\s*//g;
1117                        $c =~ s/\n$//g;
1118                        next if ($c eq $sender and $suppress_from);
1119                        push @cc, $c;
1120                        printf("(cc-cmd) Adding cc: %s from: '%s'\n",
1121                                $c, $cc_cmd) unless $quiet;
1122                }
1123                close F
1124                        or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
1125        }
1126
1127        if (defined $author and $author ne $sender) {
1128                $message = "From: $author\n\n$message";
1129                if (defined $author_encoding) {
1130                        if ($has_content_type) {
1131                                if ($body_encoding eq $author_encoding) {
1132                                        # ok, we already have the right encoding
1133                                }
1134                                else {
1135                                        # uh oh, we should re-encode
1136                                }
1137                        }
1138                        else {
1139                                push @xh,
1140                                  'MIME-Version: 1.0',
1141                                  "Content-Type: text/plain; charset=$author_encoding",
1142                                  'Content-Transfer-Encoding: 8bit';
1143                        }
1144                }
1145        }
1146
1147        $needs_confirm = (
1148                $confirm eq "always" or
1149                ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1150                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1151        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1152
1153        @cc = (@initial_cc, @cc);
1154
1155        my $message_was_sent = send_message();
1156
1157        # set up for the next message
1158        if ($thread && $message_was_sent &&
1159                ($chain_reply_to || !defined $reply_to || length($reply_to) == 0)) {
1160                $reply_to = $message_id;
1161                if (length $references > 0) {
1162                        $references .= "\n $message_id";
1163                } else {
1164                        $references = "$message_id";
1165                }
1166        }
1167        $message_id = undef;
1168}
1169
1170cleanup_compose_files();
1171
1172sub cleanup_compose_files() {
1173        unlink($compose_filename, $compose_filename . ".final") if $compose;
1174}
1175
1176$smtp->quit if $smtp;
1177
1178sub unique_email_list(@) {
1179        my %seen;
1180        my @emails;
1181
1182        foreach my $entry (@_) {
1183                if (my $clean = extract_valid_address($entry)) {
1184                        $seen{$clean} ||= 0;
1185                        next if $seen{$clean}++;
1186                        push @emails, $entry;
1187                } else {
1188                        print STDERR "W: unable to extract a valid address",
1189                                        " from: $entry\n";
1190                }
1191        }
1192        return @emails;
1193}
1194
1195sub validate_patch {
1196        my $fn = shift;
1197        open(my $fh, '<', $fn)
1198                or die "unable to open $fn: $!\n";
1199        while (my $line = <$fh>) {
1200                if (length($line) > 998) {
1201                        return "$.: patch contains a line longer than 998 characters";
1202                }
1203        }
1204        return undef;
1205}
1206
1207sub file_has_nonascii {
1208        my $fn = shift;
1209        open(my $fh, '<', $fn)
1210                or die "unable to open $fn: $!\n";
1211        while (my $line = <$fh>) {
1212                return 1 if $line =~ /[^[:ascii:]]/;
1213        }
1214        return 0;
1215}