git-send-email.perlon commit Merge branch 'cc/trailers-corner-case-fix' into maint (9d93988)
   1#!/usr/bin/perl
   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 5.008;
  20use strict;
  21use warnings;
  22use Term::ReadLine;
  23use Getopt::Long;
  24use Text::ParseWords;
  25use Data::Dumper;
  26use Term::ANSIColor;
  27use File::Temp qw/ tempdir tempfile /;
  28use File::Spec::Functions qw(catfile);
  29use Error qw(:try);
  30use Git;
  31
  32Getopt::Long::Configure qw/ pass_through /;
  33
  34package FakeTerm;
  35sub new {
  36        my ($class, $reason) = @_;
  37        return bless \$reason, shift;
  38}
  39sub readline {
  40        my $self = shift;
  41        die "Cannot use readline on FakeTerm: $$self";
  42}
  43package main;
  44
  45
  46sub usage {
  47        print <<EOT;
  48git send-email [options] <file | directory | rev-list options >
  49
  50  Composing:
  51    --from                  <str>  * Email From:
  52    --[no-]to               <str>  * Email To:
  53    --[no-]cc               <str>  * Email Cc:
  54    --[no-]bcc              <str>  * Email Bcc:
  55    --subject               <str>  * Email "Subject:"
  56    --in-reply-to           <str>  * Email "In-Reply-To:"
  57    --[no-]xmailer                 * Add "X-Mailer:" header (default).
  58    --[no-]annotate                * Review each patch that will be sent in an editor.
  59    --compose                      * Open an editor for introduction.
  60    --compose-encoding      <str>  * Encoding to assume for introduction.
  61    --8bit-encoding         <str>  * Encoding to assume 8bit mails if undeclared
  62    --transfer-encoding     <str>  * Transfer encoding to use (quoted-printable, 8bit, base64)
  63
  64  Sending:
  65    --envelope-sender       <str>  * Email envelope sender.
  66    --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
  67                                     is optional. Default 'localhost'.
  68    --smtp-server-option    <str>  * Outgoing SMTP server option to use.
  69    --smtp-server-port      <int>  * Outgoing SMTP server port.
  70    --smtp-user             <str>  * Username for SMTP-AUTH.
  71    --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
  72    --smtp-encryption       <str>  * tls or ssl; anything else disables.
  73    --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
  74    --smtp-ssl-cert-path    <str>  * Path to ca-certificates (either directory or file).
  75                                     Pass an empty string to disable certificate
  76                                     verification.
  77    --smtp-domain           <str>  * The domain name sent to HELO/EHLO handshake
  78    --smtp-debug            <0|1>  * Disable, enable Net::SMTP debug.
  79
  80  Automating:
  81    --identity              <str>  * Use the sendemail.<id> options.
  82    --to-cmd                <str>  * Email To: via `<str> \$patch_path`
  83    --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
  84    --suppress-cc           <str>  * author, self, sob, cc, cccmd, body, bodycc, all.
  85    --[no-]cc-cover                * Email Cc: addresses in the cover letter.
  86    --[no-]to-cover                * Email To: addresses in the cover letter.
  87    --[no-]signed-off-by-cc        * Send to Signed-off-by: addresses. Default on.
  88    --[no-]suppress-from           * Send to self. Default off.
  89    --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default off.
  90    --[no-]thread                  * Use In-Reply-To: field. Default on.
  91
  92  Administering:
  93    --confirm               <str>  * Confirm recipients before sending;
  94                                     auto, cc, compose, always, or never.
  95    --quiet                        * Output one line of info per email.
  96    --dry-run                      * Don't actually send the emails.
  97    --[no-]validate                * Perform patch sanity checks. Default on.
  98    --[no-]format-patch            * understand any non optional arguments as
  99                                     `git format-patch` ones.
 100    --force                        * Send even if safety checks would prevent it.
 101
 102EOT
 103        exit(1);
 104}
 105
 106# most mail servers generate the Date: header, but not all...
 107sub format_2822_time {
 108        my ($time) = @_;
 109        my @localtm = localtime($time);
 110        my @gmttm = gmtime($time);
 111        my $localmin = $localtm[1] + $localtm[2] * 60;
 112        my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
 113        if ($localtm[0] != $gmttm[0]) {
 114                die "local zone differs from GMT by a non-minute interval\n";
 115        }
 116        if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
 117                $localmin += 1440;
 118        } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 119                $localmin -= 1440;
 120        } elsif ($gmttm[6] != $localtm[6]) {
 121                die "local time offset greater than or equal to 24 hours\n";
 122        }
 123        my $offset = $localmin - $gmtmin;
 124        my $offhour = $offset / 60;
 125        my $offmin = abs($offset % 60);
 126        if (abs($offhour) >= 24) {
 127                die ("local time offset greater than or equal to 24 hours\n");
 128        }
 129
 130        return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 131                       qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 132                       $localtm[3],
 133                       qw(Jan Feb Mar Apr May Jun
 134                          Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 135                       $localtm[5]+1900,
 136                       $localtm[2],
 137                       $localtm[1],
 138                       $localtm[0],
 139                       ($offset >= 0) ? '+' : '-',
 140                       abs($offhour),
 141                       $offmin,
 142                       );
 143}
 144
 145my $have_email_valid = eval { require Email::Valid; 1 };
 146my $have_mail_address = eval { require Mail::Address; 1 };
 147my $smtp;
 148my $auth;
 149
 150# Regexes for RFC 2047 productions.
 151my $re_token = qr/[^][()<>@,;:\\"\/?.= \000-\037\177-\377]+/;
 152my $re_encoded_text = qr/[^? \000-\037\177-\377]+/;
 153my $re_encoded_word = qr/=\?($re_token)\?($re_token)\?($re_encoded_text)\?=/;
 154
 155# Variables we fill in automatically, or via prompting:
 156my (@to,$no_to,@initial_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
 157        $initial_reply_to,$initial_subject,@files,
 158        $author,$sender,$smtp_authpass,$annotate,$use_xmailer,$compose,$time);
 159
 160my $envelope_sender;
 161
 162# Example reply to:
 163#$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 164
 165my $repo = eval { Git->repository() };
 166my @repo = $repo ? ($repo) : ();
 167my $term = eval {
 168        $ENV{"GIT_SEND_EMAIL_NOTTY"}
 169                ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
 170                : new Term::ReadLine 'git-send-email';
 171};
 172if ($@) {
 173        $term = new FakeTerm "$@: going non-interactive";
 174}
 175
 176# Behavior modification variables
 177my ($quiet, $dry_run) = (0, 0);
 178my $format_patch;
 179my $compose_filename;
 180my $force = 0;
 181
 182# Handle interactive edition of files.
 183my $multiedit;
 184my $editor;
 185
 186sub do_edit {
 187        if (!defined($editor)) {
 188                $editor = Git::command_oneline('var', 'GIT_EDITOR');
 189        }
 190        if (defined($multiedit) && !$multiedit) {
 191                map {
 192                        system('sh', '-c', $editor.' "$@"', $editor, $_);
 193                        if (($? & 127) || ($? >> 8)) {
 194                                die("the editor exited uncleanly, aborting everything");
 195                        }
 196                } @_;
 197        } else {
 198                system('sh', '-c', $editor.' "$@"', $editor, @_);
 199                if (($? & 127) || ($? >> 8)) {
 200                        die("the editor exited uncleanly, aborting everything");
 201                }
 202        }
 203}
 204
 205# Variables with corresponding config settings
 206my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc);
 207my ($cover_cc, $cover_to);
 208my ($to_cmd, $cc_cmd);
 209my ($smtp_server, $smtp_server_port, @smtp_server_options);
 210my ($smtp_authuser, $smtp_encryption, $smtp_ssl_cert_path);
 211my ($identity, $aliasfiletype, @alias_files, $smtp_domain);
 212my ($validate, $confirm);
 213my (@suppress_cc);
 214my ($auto_8bit_encoding);
 215my ($compose_encoding);
 216my ($target_xfer_encoding);
 217
 218my ($debug_net_smtp) = 0;               # Net::SMTP, see send_message()
 219
 220my %config_bool_settings = (
 221    "thread" => [\$thread, 1],
 222    "chainreplyto" => [\$chain_reply_to, 0],
 223    "suppressfrom" => [\$suppress_from, undef],
 224    "signedoffbycc" => [\$signed_off_by_cc, undef],
 225    "cccover" => [\$cover_cc, undef],
 226    "tocover" => [\$cover_to, undef],
 227    "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 228    "validate" => [\$validate, 1],
 229    "multiedit" => [\$multiedit, undef],
 230    "annotate" => [\$annotate, undef],
 231    "xmailer" => [\$use_xmailer, 1]
 232);
 233
 234my %config_settings = (
 235    "smtpserver" => \$smtp_server,
 236    "smtpserverport" => \$smtp_server_port,
 237    "smtpserveroption" => \@smtp_server_options,
 238    "smtpuser" => \$smtp_authuser,
 239    "smtppass" => \$smtp_authpass,
 240    "smtpsslcertpath" => \$smtp_ssl_cert_path,
 241    "smtpdomain" => \$smtp_domain,
 242    "to" => \@initial_to,
 243    "tocmd" => \$to_cmd,
 244    "cc" => \@initial_cc,
 245    "cccmd" => \$cc_cmd,
 246    "aliasfiletype" => \$aliasfiletype,
 247    "bcc" => \@bcclist,
 248    "suppresscc" => \@suppress_cc,
 249    "envelopesender" => \$envelope_sender,
 250    "confirm"   => \$confirm,
 251    "from" => \$sender,
 252    "assume8bitencoding" => \$auto_8bit_encoding,
 253    "composeencoding" => \$compose_encoding,
 254    "transferencoding" => \$target_xfer_encoding,
 255);
 256
 257my %config_path_settings = (
 258    "aliasesfile" => \@alias_files,
 259);
 260
 261# Handle Uncouth Termination
 262sub signal_handler {
 263
 264        # Make text normal
 265        print color("reset"), "\n";
 266
 267        # SMTP password masked
 268        system "stty echo";
 269
 270        # tmp files from --compose
 271        if (defined $compose_filename) {
 272                if (-e $compose_filename) {
 273                        print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 274                }
 275                if (-e ($compose_filename . ".final")) {
 276                        print "'$compose_filename.final' contains the composed email.\n"
 277                }
 278        }
 279
 280        exit;
 281};
 282
 283$SIG{TERM} = \&signal_handler;
 284$SIG{INT}  = \&signal_handler;
 285
 286# Begin by accumulating all the variables (defined above), that we will end up
 287# needing, first, from the command line:
 288
 289my $help;
 290my $rc = GetOptions("h" => \$help,
 291                    "sender|from=s" => \$sender,
 292                    "in-reply-to=s" => \$initial_reply_to,
 293                    "subject=s" => \$initial_subject,
 294                    "to=s" => \@initial_to,
 295                    "to-cmd=s" => \$to_cmd,
 296                    "no-to" => \$no_to,
 297                    "cc=s" => \@initial_cc,
 298                    "no-cc" => \$no_cc,
 299                    "bcc=s" => \@bcclist,
 300                    "no-bcc" => \$no_bcc,
 301                    "chain-reply-to!" => \$chain_reply_to,
 302                    "no-chain-reply-to" => sub {$chain_reply_to = 0},
 303                    "smtp-server=s" => \$smtp_server,
 304                    "smtp-server-option=s" => \@smtp_server_options,
 305                    "smtp-server-port=s" => \$smtp_server_port,
 306                    "smtp-user=s" => \$smtp_authuser,
 307                    "smtp-pass:s" => \$smtp_authpass,
 308                    "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 309                    "smtp-encryption=s" => \$smtp_encryption,
 310                    "smtp-ssl-cert-path=s" => \$smtp_ssl_cert_path,
 311                    "smtp-debug:i" => \$debug_net_smtp,
 312                    "smtp-domain:s" => \$smtp_domain,
 313                    "identity=s" => \$identity,
 314                    "annotate!" => \$annotate,
 315                    "no-annotate" => sub {$annotate = 0},
 316                    "compose" => \$compose,
 317                    "quiet" => \$quiet,
 318                    "cc-cmd=s" => \$cc_cmd,
 319                    "suppress-from!" => \$suppress_from,
 320                    "no-suppress-from" => sub {$suppress_from = 0},
 321                    "suppress-cc=s" => \@suppress_cc,
 322                    "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 323                    "no-signed-off-cc|no-signed-off-by-cc" => sub {$signed_off_by_cc = 0},
 324                    "cc-cover|cc-cover!" => \$cover_cc,
 325                    "no-cc-cover" => sub {$cover_cc = 0},
 326                    "to-cover|to-cover!" => \$cover_to,
 327                    "no-to-cover" => sub {$cover_to = 0},
 328                    "confirm=s" => \$confirm,
 329                    "dry-run" => \$dry_run,
 330                    "envelope-sender=s" => \$envelope_sender,
 331                    "thread!" => \$thread,
 332                    "no-thread" => sub {$thread = 0},
 333                    "validate!" => \$validate,
 334                    "no-validate" => sub {$validate = 0},
 335                    "transfer-encoding=s" => \$target_xfer_encoding,
 336                    "format-patch!" => \$format_patch,
 337                    "no-format-patch" => sub {$format_patch = 0},
 338                    "8bit-encoding=s" => \$auto_8bit_encoding,
 339                    "compose-encoding=s" => \$compose_encoding,
 340                    "force" => \$force,
 341                    "xmailer!" => \$use_xmailer,
 342                    "no-xmailer" => sub {$use_xmailer = 0},
 343         );
 344
 345usage() if $help;
 346unless ($rc) {
 347    usage();
 348}
 349
 350die "Cannot run git format-patch from outside a repository\n"
 351        if $format_patch and not $repo;
 352
 353# Now, let's fill any that aren't set in with defaults:
 354
 355sub read_config {
 356        my ($prefix) = @_;
 357
 358        foreach my $setting (keys %config_bool_settings) {
 359                my $target = $config_bool_settings{$setting}->[0];
 360                $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 361        }
 362
 363        foreach my $setting (keys %config_path_settings) {
 364                my $target = $config_path_settings{$setting};
 365                if (ref($target) eq "ARRAY") {
 366                        unless (@$target) {
 367                                my @values = Git::config_path(@repo, "$prefix.$setting");
 368                                @$target = @values if (@values && defined $values[0]);
 369                        }
 370                }
 371                else {
 372                        $$target = Git::config_path(@repo, "$prefix.$setting") unless (defined $$target);
 373                }
 374        }
 375
 376        foreach my $setting (keys %config_settings) {
 377                my $target = $config_settings{$setting};
 378                next if $setting eq "to" and defined $no_to;
 379                next if $setting eq "cc" and defined $no_cc;
 380                next if $setting eq "bcc" and defined $no_bcc;
 381                if (ref($target) eq "ARRAY") {
 382                        unless (@$target) {
 383                                my @values = Git::config(@repo, "$prefix.$setting");
 384                                @$target = @values if (@values && defined $values[0]);
 385                        }
 386                }
 387                else {
 388                        $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 389                }
 390        }
 391
 392        if (!defined $smtp_encryption) {
 393                my $enc = Git::config(@repo, "$prefix.smtpencryption");
 394                if (defined $enc) {
 395                        $smtp_encryption = $enc;
 396                } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 397                        $smtp_encryption = 'ssl';
 398                }
 399        }
 400}
 401
 402# read configuration from [sendemail "$identity"], fall back on [sendemail]
 403$identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 404read_config("sendemail.$identity") if (defined $identity);
 405read_config("sendemail");
 406
 407# fall back on builtin bool defaults
 408foreach my $setting (values %config_bool_settings) {
 409        ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 410}
 411
 412# 'default' encryption is none -- this only prevents a warning
 413$smtp_encryption = '' unless (defined $smtp_encryption);
 414
 415# Set CC suppressions
 416my(%suppress_cc);
 417if (@suppress_cc) {
 418        foreach my $entry (@suppress_cc) {
 419                die "Unknown --suppress-cc field: '$entry'\n"
 420                        unless $entry =~ /^(?:all|cccmd|cc|author|self|sob|body|bodycc)$/;
 421                $suppress_cc{$entry} = 1;
 422        }
 423}
 424
 425if ($suppress_cc{'all'}) {
 426        foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
 427                $suppress_cc{$entry} = 1;
 428        }
 429        delete $suppress_cc{'all'};
 430}
 431
 432# If explicit old-style ones are specified, they trump --suppress-cc.
 433$suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 434$suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 435
 436if ($suppress_cc{'body'}) {
 437        foreach my $entry (qw (sob bodycc)) {
 438                $suppress_cc{$entry} = 1;
 439        }
 440        delete $suppress_cc{'body'};
 441}
 442
 443# Set confirm's default value
 444my $confirm_unconfigured = !defined $confirm;
 445if ($confirm_unconfigured) {
 446        $confirm = scalar %suppress_cc ? 'compose' : 'auto';
 447};
 448die "Unknown --confirm setting: '$confirm'\n"
 449        unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
 450
 451# Debugging, print out the suppressions.
 452if (0) {
 453        print "suppressions:\n";
 454        foreach my $entry (keys %suppress_cc) {
 455                printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 456        }
 457}
 458
 459my ($repoauthor, $repocommitter);
 460($repoauthor) = Git::ident_person(@repo, 'author');
 461($repocommitter) = Git::ident_person(@repo, 'committer');
 462
 463# Verify the user input
 464
 465foreach my $entry (@initial_to) {
 466        die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 467}
 468
 469foreach my $entry (@initial_cc) {
 470        die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
 471}
 472
 473foreach my $entry (@bcclist) {
 474        die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 475}
 476
 477sub parse_address_line {
 478        if ($have_mail_address) {
 479                return map { $_->format } Mail::Address->parse($_[0]);
 480        } else {
 481                return split_addrs($_[0]);
 482        }
 483}
 484
 485sub split_addrs {
 486        return quotewords('\s*,\s*', 1, @_);
 487}
 488
 489my %aliases;
 490
 491sub parse_sendmail_alias {
 492        local $_ = shift;
 493        if (/"/) {
 494                print STDERR "warning: sendmail alias with quotes is not supported: $_\n";
 495        } elsif (/:include:/) {
 496                print STDERR "warning: `:include:` not supported: $_\n";
 497        } elsif (/[\/|]/) {
 498                print STDERR "warning: `/file` or `|pipe` redirection not supported: $_\n";
 499        } elsif (/^(\S+?)\s*:\s*(.+)$/) {
 500                my ($alias, $addr) = ($1, $2);
 501                $aliases{$alias} = [ split_addrs($addr) ];
 502        } else {
 503                print STDERR "warning: sendmail line is not recognized: $_\n";
 504        }
 505}
 506
 507sub parse_sendmail_aliases {
 508        my $fh = shift;
 509        my $s = '';
 510        while (<$fh>) {
 511                chomp;
 512                next if /^\s*$/ || /^\s*#/;
 513                $s .= $_, next if $s =~ s/\\$// || s/^\s+//;
 514                parse_sendmail_alias($s) if $s;
 515                $s = $_;
 516        }
 517        $s =~ s/\\$//; # silently tolerate stray '\' on last line
 518        parse_sendmail_alias($s) if $s;
 519}
 520
 521my %parse_alias = (
 522        # multiline formats can be supported in the future
 523        mutt => sub { my $fh = shift; while (<$fh>) {
 524                if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
 525                        my ($alias, $addr) = ($1, $2);
 526                        $addr =~ s/#.*$//; # mutt allows # comments
 527                         # commas delimit multiple addresses
 528                        $aliases{$alias} = [ split_addrs($addr) ];
 529                }}},
 530        mailrc => sub { my $fh = shift; while (<$fh>) {
 531                if (/^alias\s+(\S+)\s+(.*)$/) {
 532                        # spaces delimit multiple addresses
 533                        $aliases{$1} = [ quotewords('\s+', 0, $2) ];
 534                }}},
 535        pine => sub { my $fh = shift; my $f='\t[^\t]*';
 536                for (my $x = ''; defined($x); $x = $_) {
 537                        chomp $x;
 538                        $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 539                        $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 540                        $aliases{$1} = [ split_addrs($2) ];
 541                }},
 542        elm => sub  { my $fh = shift;
 543                      while (<$fh>) {
 544                          if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
 545                              my ($alias, $addr) = ($1, $2);
 546                               $aliases{$alias} = [ split_addrs($addr) ];
 547                          }
 548                      } },
 549        sendmail => \&parse_sendmail_aliases,
 550        gnus => sub { my $fh = shift; while (<$fh>) {
 551                if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 552                        $aliases{$1} = [ $2 ];
 553                }}}
 554);
 555
 556if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 557        foreach my $file (@alias_files) {
 558                open my $fh, '<', $file or die "opening $file: $!\n";
 559                $parse_alias{$aliasfiletype}->($fh);
 560                close $fh;
 561        }
 562}
 563
 564($sender) = expand_aliases($sender) if defined $sender;
 565
 566# is_format_patch_arg($f) returns 0 if $f names a patch, or 1 if
 567# $f is a revision list specification to be passed to format-patch.
 568sub is_format_patch_arg {
 569        return unless $repo;
 570        my $f = shift;
 571        try {
 572                $repo->command('rev-parse', '--verify', '--quiet', $f);
 573                if (defined($format_patch)) {
 574                        return $format_patch;
 575                }
 576                die(<<EOF);
 577File '$f' exists but it could also be the range of commits
 578to produce patches for.  Please disambiguate by...
 579
 580    * Saying "./$f" if you mean a file; or
 581    * Giving --format-patch option if you mean a range.
 582EOF
 583        } catch Git::Error::Command with {
 584                # Not a valid revision.  Treat it as a filename.
 585                return 0;
 586        }
 587}
 588
 589# Now that all the defaults are set, process the rest of the command line
 590# arguments and collect up the files that need to be processed.
 591my @rev_list_opts;
 592while (defined(my $f = shift @ARGV)) {
 593        if ($f eq "--") {
 594                push @rev_list_opts, "--", @ARGV;
 595                @ARGV = ();
 596        } elsif (-d $f and !is_format_patch_arg($f)) {
 597                opendir my $dh, $f
 598                        or die "Failed to opendir $f: $!";
 599
 600                push @files, grep { -f $_ } map { catfile($f, $_) }
 601                                sort readdir $dh;
 602                closedir $dh;
 603        } elsif ((-f $f or -p $f) and !is_format_patch_arg($f)) {
 604                push @files, $f;
 605        } else {
 606                push @rev_list_opts, $f;
 607        }
 608}
 609
 610if (@rev_list_opts) {
 611        die "Cannot run git format-patch from outside a repository\n"
 612                unless $repo;
 613        push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 614}
 615
 616if ($validate) {
 617        foreach my $f (@files) {
 618                unless (-p $f) {
 619                        my $error = validate_patch($f);
 620                        $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 621                }
 622        }
 623}
 624
 625if (@files) {
 626        unless ($quiet) {
 627                print $_,"\n" for (@files);
 628        }
 629} else {
 630        print STDERR "\nNo patch files specified!\n\n";
 631        usage();
 632}
 633
 634sub get_patch_subject {
 635        my $fn = shift;
 636        open (my $fh, '<', $fn);
 637        while (my $line = <$fh>) {
 638                next unless ($line =~ /^Subject: (.*)$/);
 639                close $fh;
 640                return "GIT: $1\n";
 641        }
 642        close $fh;
 643        die "No subject line in $fn ?";
 644}
 645
 646if ($compose) {
 647        # Note that this does not need to be secure, but we will make a small
 648        # effort to have it be unique
 649        $compose_filename = ($repo ?
 650                tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 651                tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 652        open my $c, ">", $compose_filename
 653                or die "Failed to open for writing $compose_filename: $!";
 654
 655
 656        my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 657        my $tpl_subject = $initial_subject || '';
 658        my $tpl_reply_to = $initial_reply_to || '';
 659
 660        print $c <<EOT;
 661From $tpl_sender # This line is ignored.
 662GIT: Lines beginning in "GIT:" will be removed.
 663GIT: Consider including an overall diffstat or table of contents
 664GIT: for the patch you are writing.
 665GIT:
 666GIT: Clear the body content if you don't wish to send a summary.
 667From: $tpl_sender
 668Subject: $tpl_subject
 669In-Reply-To: $tpl_reply_to
 670
 671EOT
 672        for my $f (@files) {
 673                print $c get_patch_subject($f);
 674        }
 675        close $c;
 676
 677        if ($annotate) {
 678                do_edit($compose_filename, @files);
 679        } else {
 680                do_edit($compose_filename);
 681        }
 682
 683        open my $c2, ">", $compose_filename . ".final"
 684                or die "Failed to open $compose_filename.final : " . $!;
 685
 686        open $c, "<", $compose_filename
 687                or die "Failed to open $compose_filename : " . $!;
 688
 689        my $need_8bit_cte = file_has_nonascii($compose_filename);
 690        my $in_body = 0;
 691        my $summary_empty = 1;
 692        if (!defined $compose_encoding) {
 693                $compose_encoding = "UTF-8";
 694        }
 695        while(<$c>) {
 696                next if m/^GIT:/;
 697                if ($in_body) {
 698                        $summary_empty = 0 unless (/^\n$/);
 699                } elsif (/^\n$/) {
 700                        $in_body = 1;
 701                        if ($need_8bit_cte) {
 702                                print $c2 "MIME-Version: 1.0\n",
 703                                         "Content-Type: text/plain; ",
 704                                           "charset=$compose_encoding\n",
 705                                         "Content-Transfer-Encoding: 8bit\n";
 706                        }
 707                } elsif (/^MIME-Version:/i) {
 708                        $need_8bit_cte = 0;
 709                } elsif (/^Subject:\s*(.+)\s*$/i) {
 710                        $initial_subject = $1;
 711                        my $subject = $initial_subject;
 712                        $_ = "Subject: " .
 713                                quote_subject($subject, $compose_encoding) .
 714                                "\n";
 715                } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 716                        $initial_reply_to = $1;
 717                        next;
 718                } elsif (/^From:\s*(.+)\s*$/i) {
 719                        $sender = $1;
 720                        next;
 721                } elsif (/^(?:To|Cc|Bcc):/i) {
 722                        print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 723                        next;
 724                }
 725                print $c2 $_;
 726        }
 727        close $c;
 728        close $c2;
 729
 730        if ($summary_empty) {
 731                print "Summary email is empty, skipping it\n";
 732                $compose = -1;
 733        }
 734} elsif ($annotate) {
 735        do_edit(@files);
 736}
 737
 738sub ask {
 739        my ($prompt, %arg) = @_;
 740        my $valid_re = $arg{valid_re};
 741        my $default = $arg{default};
 742        my $confirm_only = $arg{confirm_only};
 743        my $resp;
 744        my $i = 0;
 745        return defined $default ? $default : undef
 746                unless defined $term->IN and defined fileno($term->IN) and
 747                       defined $term->OUT and defined fileno($term->OUT);
 748        while ($i++ < 10) {
 749                $resp = $term->readline($prompt);
 750                if (!defined $resp) { # EOF
 751                        print "\n";
 752                        return defined $default ? $default : undef;
 753                }
 754                if ($resp eq '' and defined $default) {
 755                        return $default;
 756                }
 757                if (!defined $valid_re or $resp =~ /$valid_re/) {
 758                        return $resp;
 759                }
 760                if ($confirm_only) {
 761                        my $yesno = $term->readline("Are you sure you want to use <$resp> [y/N]? ");
 762                        if (defined $yesno && $yesno =~ /y/i) {
 763                                return $resp;
 764                        }
 765                }
 766        }
 767        return;
 768}
 769
 770my %broken_encoding;
 771
 772sub file_declares_8bit_cte {
 773        my $fn = shift;
 774        open (my $fh, '<', $fn);
 775        while (my $line = <$fh>) {
 776                last if ($line =~ /^$/);
 777                return 1 if ($line =~ /^Content-Transfer-Encoding: .*8bit.*$/);
 778        }
 779        close $fh;
 780        return 0;
 781}
 782
 783foreach my $f (@files) {
 784        next unless (body_or_subject_has_nonascii($f)
 785                     && !file_declares_8bit_cte($f));
 786        $broken_encoding{$f} = 1;
 787}
 788
 789if (!defined $auto_8bit_encoding && scalar %broken_encoding) {
 790        print "The following files are 8bit, but do not declare " .
 791                "a Content-Transfer-Encoding.\n";
 792        foreach my $f (sort keys %broken_encoding) {
 793                print "    $f\n";
 794        }
 795        $auto_8bit_encoding = ask("Which 8bit encoding should I declare [UTF-8]? ",
 796                                  valid_re => qr/.{4}/, confirm_only => 1,
 797                                  default => "UTF-8");
 798}
 799
 800if (!$force) {
 801        for my $f (@files) {
 802                if (get_patch_subject($f) =~ /\Q*** SUBJECT HERE ***\E/) {
 803                        die "Refusing to send because the patch\n\t$f\n"
 804                                . "has the template subject '*** SUBJECT HERE ***'. "
 805                                . "Pass --force if you really want to send.\n";
 806                }
 807        }
 808}
 809
 810if (!defined $sender) {
 811        $sender = $repoauthor || $repocommitter || '';
 812}
 813
 814# $sender could be an already sanitized address
 815# (e.g. sendemail.from could be manually sanitized by user).
 816# But it's a no-op to run sanitize_address on an already sanitized address.
 817$sender = sanitize_address($sender);
 818
 819my $prompting = 0;
 820if (!@initial_to && !defined $to_cmd) {
 821        my $to = ask("Who should the emails be sent to (if any)? ",
 822                     default => "",
 823                     valid_re => qr/\@.*\./, confirm_only => 1);
 824        push @initial_to, parse_address_line($to) if defined $to; # sanitized/validated later
 825        $prompting++;
 826}
 827
 828sub expand_aliases {
 829        return map { expand_one_alias($_) } @_;
 830}
 831
 832my %EXPANDED_ALIASES;
 833sub expand_one_alias {
 834        my $alias = shift;
 835        if ($EXPANDED_ALIASES{$alias}) {
 836                die "fatal: alias '$alias' expands to itself\n";
 837        }
 838        local $EXPANDED_ALIASES{$alias} = 1;
 839        return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 840}
 841
 842@initial_to = expand_aliases(@initial_to);
 843@initial_to = validate_address_list(sanitize_address_list(@initial_to));
 844@initial_cc = expand_aliases(@initial_cc);
 845@initial_cc = validate_address_list(sanitize_address_list(@initial_cc));
 846@bcclist = expand_aliases(@bcclist);
 847@bcclist = validate_address_list(sanitize_address_list(@bcclist));
 848
 849if ($thread && !defined $initial_reply_to && $prompting) {
 850        $initial_reply_to = ask(
 851                "Message-ID to be used as In-Reply-To for the first email (if any)? ",
 852                default => "",
 853                valid_re => qr/\@.*\./, confirm_only => 1);
 854}
 855if (defined $initial_reply_to) {
 856        $initial_reply_to =~ s/^\s*<?//;
 857        $initial_reply_to =~ s/>?\s*$//;
 858        $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 859}
 860
 861if (!defined $smtp_server) {
 862        foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 863                if (-x $_) {
 864                        $smtp_server = $_;
 865                        last;
 866                }
 867        }
 868        $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 869}
 870
 871if ($compose && $compose > 0) {
 872        @files = ($compose_filename . ".final", @files);
 873}
 874
 875# Variables we set as part of the loop over files
 876our ($message_id, %mail, $subject, $reply_to, $references, $message,
 877        $needs_confirm, $message_num, $ask_default);
 878
 879sub extract_valid_address {
 880        my $address = shift;
 881        my $local_part_regexp = qr/[^<>"\s@]+/;
 882        my $domain_regexp = qr/[^.<>"\s@]+(?:\.[^.<>"\s@]+)+/;
 883
 884        # check for a local address:
 885        return $address if ($address =~ /^($local_part_regexp)$/);
 886
 887        $address =~ s/^\s*<(.*)>\s*$/$1/;
 888        if ($have_email_valid) {
 889                return scalar Email::Valid->address($address);
 890        }
 891
 892        # less robust/correct than the monster regexp in Email::Valid,
 893        # but still does a 99% job, and one less dependency
 894        return $1 if $address =~ /($local_part_regexp\@$domain_regexp)/;
 895        return;
 896}
 897
 898sub extract_valid_address_or_die {
 899        my $address = shift;
 900        $address = extract_valid_address($address);
 901        die "error: unable to extract a valid address from: $address\n"
 902                if !$address;
 903        return $address;
 904}
 905
 906sub validate_address {
 907        my $address = shift;
 908        while (!extract_valid_address($address)) {
 909                print STDERR "error: unable to extract a valid address from: $address\n";
 910                $_ = ask("What to do with this address? ([q]uit|[d]rop|[e]dit): ",
 911                        valid_re => qr/^(?:quit|q|drop|d|edit|e)/i,
 912                        default => 'q');
 913                if (/^d/i) {
 914                        return undef;
 915                } elsif (/^q/i) {
 916                        cleanup_compose_files();
 917                        exit(0);
 918                }
 919                $address = ask("Who should the email be sent to (if any)? ",
 920                        default => "",
 921                        valid_re => qr/\@.*\./, confirm_only => 1);
 922        }
 923        return $address;
 924}
 925
 926sub validate_address_list {
 927        return (grep { defined $_ }
 928                map { validate_address($_) } @_);
 929}
 930
 931# Usually don't need to change anything below here.
 932
 933# we make a "fake" message id by taking the current number
 934# of seconds since the beginning of Unix time and tacking on
 935# a random number to the end, in case we are called quicker than
 936# 1 second since the last time we were called.
 937
 938# We'll setup a template for the message id, using the "from" address:
 939
 940my ($message_id_stamp, $message_id_serial);
 941sub make_message_id {
 942        my $uniq;
 943        if (!defined $message_id_stamp) {
 944                $message_id_stamp = sprintf("%s-%s", time, $$);
 945                $message_id_serial = 0;
 946        }
 947        $message_id_serial++;
 948        $uniq = "$message_id_stamp-$message_id_serial";
 949
 950        my $du_part;
 951        for ($sender, $repocommitter, $repoauthor) {
 952                $du_part = extract_valid_address(sanitize_address($_));
 953                last if (defined $du_part and $du_part ne '');
 954        }
 955        if (not defined $du_part or $du_part eq '') {
 956                require Sys::Hostname;
 957                $du_part = 'user@' . Sys::Hostname::hostname();
 958        }
 959        my $message_id_template = "<%s-git-send-email-%s>";
 960        $message_id = sprintf($message_id_template, $uniq, $du_part);
 961        #print "new message id = $message_id\n"; # Was useful for debugging
 962}
 963
 964
 965
 966$time = time - scalar $#files;
 967
 968sub unquote_rfc2047 {
 969        local ($_) = @_;
 970        my $charset;
 971        my $sep = qr/[ \t]+/;
 972        s{$re_encoded_word(?:$sep$re_encoded_word)*}{
 973                my @words = split $sep, $&;
 974                foreach (@words) {
 975                        m/$re_encoded_word/;
 976                        $charset = $1;
 977                        my $encoding = $2;
 978                        my $text = $3;
 979                        if ($encoding eq 'q' || $encoding eq 'Q') {
 980                                $_ = $text;
 981                                s/_/ /g;
 982                                s/=([0-9A-F]{2})/chr(hex($1))/egi;
 983                        } else {
 984                                # other encodings not supported yet
 985                        }
 986                }
 987                join '', @words;
 988        }eg;
 989        return wantarray ? ($_, $charset) : $_;
 990}
 991
 992sub quote_rfc2047 {
 993        local $_ = shift;
 994        my $encoding = shift || 'UTF-8';
 995        s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
 996        s/(.*)/=\?$encoding\?q\?$1\?=/;
 997        return $_;
 998}
 999
1000sub is_rfc2047_quoted {
1001        my $s = shift;
1002        length($s) <= 75 &&
1003        $s =~ m/^(?:"[[:ascii:]]*"|$re_encoded_word)$/o;
1004}
1005
1006sub subject_needs_rfc2047_quoting {
1007        my $s = shift;
1008
1009        return ($s =~ /[^[:ascii:]]/) || ($s =~ /=\?/);
1010}
1011
1012sub quote_subject {
1013        local $subject = shift;
1014        my $encoding = shift || 'UTF-8';
1015
1016        if (subject_needs_rfc2047_quoting($subject)) {
1017                return quote_rfc2047($subject, $encoding);
1018        }
1019        return $subject;
1020}
1021
1022# use the simplest quoting being able to handle the recipient
1023sub sanitize_address {
1024        my ($recipient) = @_;
1025
1026        # remove garbage after email address
1027        $recipient =~ s/(.*>).*$/$1/;
1028
1029        my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
1030
1031        if (not $recipient_name) {
1032                return $recipient;
1033        }
1034
1035        # if recipient_name is already quoted, do nothing
1036        if (is_rfc2047_quoted($recipient_name)) {
1037                return $recipient;
1038        }
1039
1040        # rfc2047 is needed if a non-ascii char is included
1041        if ($recipient_name =~ /[^[:ascii:]]/) {
1042                $recipient_name =~ s/^"(.*)"$/$1/;
1043                $recipient_name = quote_rfc2047($recipient_name);
1044        }
1045
1046        # double quotes are needed if specials or CTLs are included
1047        elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
1048                $recipient_name =~ s/(["\\\r])/\\$1/g;
1049                $recipient_name = qq["$recipient_name"];
1050        }
1051
1052        return "$recipient_name $recipient_addr";
1053
1054}
1055
1056sub sanitize_address_list {
1057        return (map { sanitize_address($_) } @_);
1058}
1059
1060# Returns the local Fully Qualified Domain Name (FQDN) if available.
1061#
1062# Tightly configured MTAa require that a caller sends a real DNS
1063# domain name that corresponds the IP address in the HELO/EHLO
1064# handshake. This is used to verify the connection and prevent
1065# spammers from trying to hide their identity. If the DNS and IP don't
1066# match, the receiveing MTA may deny the connection.
1067#
1068# Here is a deny example of Net::SMTP with the default "localhost.localdomain"
1069#
1070# Net::SMTP=GLOB(0x267ec28)>>> EHLO localhost.localdomain
1071# Net::SMTP=GLOB(0x267ec28)<<< 550 EHLO argument does not match calling host
1072#
1073# This maildomain*() code is based on ideas in Perl library Test::Reporter
1074# /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
1075
1076sub valid_fqdn {
1077        my $domain = shift;
1078        return defined $domain && !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./;
1079}
1080
1081sub maildomain_net {
1082        my $maildomain;
1083
1084        if (eval { require Net::Domain; 1 }) {
1085                my $domain = Net::Domain::domainname();
1086                $maildomain = $domain if valid_fqdn($domain);
1087        }
1088
1089        return $maildomain;
1090}
1091
1092sub maildomain_mta {
1093        my $maildomain;
1094
1095        if (eval { require Net::SMTP; 1 }) {
1096                for my $host (qw(mailhost localhost)) {
1097                        my $smtp = Net::SMTP->new($host);
1098                        if (defined $smtp) {
1099                                my $domain = $smtp->domain;
1100                                $smtp->quit;
1101
1102                                $maildomain = $domain if valid_fqdn($domain);
1103
1104                                last if $maildomain;
1105                        }
1106                }
1107        }
1108
1109        return $maildomain;
1110}
1111
1112sub maildomain {
1113        return maildomain_net() || maildomain_mta() || 'localhost.localdomain';
1114}
1115
1116sub smtp_host_string {
1117        if (defined $smtp_server_port) {
1118                return "$smtp_server:$smtp_server_port";
1119        } else {
1120                return $smtp_server;
1121        }
1122}
1123
1124# Returns 1 if authentication succeeded or was not necessary
1125# (smtp_user was not specified), and 0 otherwise.
1126
1127sub smtp_auth_maybe {
1128        if (!defined $smtp_authuser || $auth) {
1129                return 1;
1130        }
1131
1132        # Workaround AUTH PLAIN/LOGIN interaction defect
1133        # with Authen::SASL::Cyrus
1134        eval {
1135                require Authen::SASL;
1136                Authen::SASL->import(qw(Perl));
1137        };
1138
1139        # TODO: Authentication may fail not because credentials were
1140        # invalid but due to other reasons, in which we should not
1141        # reject credentials.
1142        $auth = Git::credential({
1143                'protocol' => 'smtp',
1144                'host' => smtp_host_string(),
1145                'username' => $smtp_authuser,
1146                # if there's no password, "git credential fill" will
1147                # give us one, otherwise it'll just pass this one.
1148                'password' => $smtp_authpass
1149        }, sub {
1150                my $cred = shift;
1151                return !!$smtp->auth($cred->{'username'}, $cred->{'password'});
1152        });
1153
1154        return $auth;
1155}
1156
1157sub ssl_verify_params {
1158        eval {
1159                require IO::Socket::SSL;
1160                IO::Socket::SSL->import(qw/SSL_VERIFY_PEER SSL_VERIFY_NONE/);
1161        };
1162        if ($@) {
1163                print STDERR "Not using SSL_VERIFY_PEER due to out-of-date IO::Socket::SSL.\n";
1164                return;
1165        }
1166
1167        if (!defined $smtp_ssl_cert_path) {
1168                # use the OpenSSL defaults
1169                return (SSL_verify_mode => SSL_VERIFY_PEER());
1170        }
1171
1172        if ($smtp_ssl_cert_path eq "") {
1173                return (SSL_verify_mode => SSL_VERIFY_NONE());
1174        } elsif (-d $smtp_ssl_cert_path) {
1175                return (SSL_verify_mode => SSL_VERIFY_PEER(),
1176                        SSL_ca_path => $smtp_ssl_cert_path);
1177        } elsif (-f $smtp_ssl_cert_path) {
1178                return (SSL_verify_mode => SSL_VERIFY_PEER(),
1179                        SSL_ca_file => $smtp_ssl_cert_path);
1180        } else {
1181                print STDERR "Not using SSL_VERIFY_PEER because the CA path does not exist.\n";
1182                return (SSL_verify_mode => SSL_VERIFY_NONE());
1183        }
1184}
1185
1186sub file_name_is_absolute {
1187        my ($path) = @_;
1188
1189        # msys does not grok DOS drive-prefixes
1190        if ($^O eq 'msys') {
1191                return ($path =~ m#^/# || $path =~ m#^[a-zA-Z]\:#)
1192        }
1193
1194        require File::Spec::Functions;
1195        return File::Spec::Functions::file_name_is_absolute($path);
1196}
1197
1198# Returns 1 if the message was sent, and 0 otherwise.
1199# In actuality, the whole program dies when there
1200# is an error sending a message.
1201
1202sub send_message {
1203        my @recipients = unique_email_list(@to);
1204        @cc = (grep { my $cc = extract_valid_address_or_die($_);
1205                      not grep { $cc eq $_ || $_ =~ /<\Q${cc}\E>$/ } @recipients
1206                    }
1207               @cc);
1208        my $to = join (",\n\t", @recipients);
1209        @recipients = unique_email_list(@recipients,@cc,@bcclist);
1210        @recipients = (map { extract_valid_address_or_die($_) } @recipients);
1211        my $date = format_2822_time($time++);
1212        my $gitversion = '@@GIT_VERSION@@';
1213        if ($gitversion =~ m/..GIT_VERSION../) {
1214            $gitversion = Git::version();
1215        }
1216
1217        my $cc = join(",\n\t", unique_email_list(@cc));
1218        my $ccline = "";
1219        if ($cc ne '') {
1220                $ccline = "\nCc: $cc";
1221        }
1222        make_message_id() unless defined($message_id);
1223
1224        my $header = "From: $sender
1225To: $to${ccline}
1226Subject: $subject
1227Date: $date
1228Message-Id: $message_id
1229";
1230        if ($use_xmailer) {
1231                $header .= "X-Mailer: git-send-email $gitversion\n";
1232        }
1233        if ($reply_to) {
1234
1235                $header .= "In-Reply-To: $reply_to\n";
1236                $header .= "References: $references\n";
1237        }
1238        if (@xh) {
1239                $header .= join("\n", @xh) . "\n";
1240        }
1241
1242        my @sendmail_parameters = ('-i', @recipients);
1243        my $raw_from = $sender;
1244        if (defined $envelope_sender && $envelope_sender ne "auto") {
1245                $raw_from = $envelope_sender;
1246        }
1247        $raw_from = extract_valid_address($raw_from);
1248        unshift (@sendmail_parameters,
1249                        '-f', $raw_from) if(defined $envelope_sender);
1250
1251        if ($needs_confirm && !$dry_run) {
1252                print "\n$header\n";
1253                if ($needs_confirm eq "inform") {
1254                        $confirm_unconfigured = 0; # squelch this message for the rest of this run
1255                        $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
1256                        print "    The Cc list above has been expanded by additional\n";
1257                        print "    addresses found in the patch commit message. By default\n";
1258                        print "    send-email prompts before sending whenever this occurs.\n";
1259                        print "    This behavior is controlled by the sendemail.confirm\n";
1260                        print "    configuration setting.\n";
1261                        print "\n";
1262                        print "    For additional information, run 'git send-email --help'.\n";
1263                        print "    To retain the current behavior, but squelch this message,\n";
1264                        print "    run 'git config --global sendemail.confirm auto'.\n\n";
1265                }
1266                $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ",
1267                         valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
1268                         default => $ask_default);
1269                die "Send this email reply required" unless defined $_;
1270                if (/^n/i) {
1271                        return 0;
1272                } elsif (/^q/i) {
1273                        cleanup_compose_files();
1274                        exit(0);
1275                } elsif (/^a/i) {
1276                        $confirm = 'never';
1277                }
1278        }
1279
1280        unshift (@sendmail_parameters, @smtp_server_options);
1281
1282        if ($dry_run) {
1283                # We don't want to send the email.
1284        } elsif (file_name_is_absolute($smtp_server)) {
1285                my $pid = open my $sm, '|-';
1286                defined $pid or die $!;
1287                if (!$pid) {
1288                        exec($smtp_server, @sendmail_parameters) or die $!;
1289                }
1290                print $sm "$header\n$message";
1291                close $sm or die $!;
1292        } else {
1293
1294                if (!defined $smtp_server) {
1295                        die "The required SMTP server is not properly defined."
1296                }
1297
1298                if ($smtp_encryption eq 'ssl') {
1299                        $smtp_server_port ||= 465; # ssmtp
1300                        require Net::SMTP::SSL;
1301                        $smtp_domain ||= maildomain();
1302                        require IO::Socket::SSL;
1303                        # Net::SMTP::SSL->new() does not forward any SSL options
1304                        IO::Socket::SSL::set_client_defaults(
1305                                ssl_verify_params());
1306                        $smtp ||= Net::SMTP::SSL->new($smtp_server,
1307                                                      Hello => $smtp_domain,
1308                                                      Port => $smtp_server_port,
1309                                                      Debug => $debug_net_smtp);
1310                }
1311                else {
1312                        require Net::SMTP;
1313                        $smtp_domain ||= maildomain();
1314                        $smtp_server_port ||= 25;
1315                        $smtp ||= Net::SMTP->new($smtp_server,
1316                                                 Hello => $smtp_domain,
1317                                                 Debug => $debug_net_smtp,
1318                                                 Port => $smtp_server_port);
1319                        if ($smtp_encryption eq 'tls' && $smtp) {
1320                                require Net::SMTP::SSL;
1321                                $smtp->command('STARTTLS');
1322                                $smtp->response();
1323                                if ($smtp->code == 220) {
1324                                        $smtp = Net::SMTP::SSL->start_SSL($smtp,
1325                                                                          ssl_verify_params())
1326                                                or die "STARTTLS failed! ".IO::Socket::SSL::errstr();
1327                                        $smtp_encryption = '';
1328                                        # Send EHLO again to receive fresh
1329                                        # supported commands
1330                                        $smtp->hello($smtp_domain);
1331                                } else {
1332                                        die "Server does not support STARTTLS! ".$smtp->message;
1333                                }
1334                        }
1335                }
1336
1337                if (!$smtp) {
1338                        die "Unable to initialize SMTP properly. Check config and use --smtp-debug. ",
1339                            "VALUES: server=$smtp_server ",
1340                            "encryption=$smtp_encryption ",
1341                            "hello=$smtp_domain",
1342                            defined $smtp_server_port ? " port=$smtp_server_port" : "";
1343                }
1344
1345                smtp_auth_maybe or die $smtp->message;
1346
1347                $smtp->mail( $raw_from ) or die $smtp->message;
1348                $smtp->to( @recipients ) or die $smtp->message;
1349                $smtp->data or die $smtp->message;
1350                $smtp->datasend("$header\n$message") or die $smtp->message;
1351                $smtp->dataend() or die $smtp->message;
1352                $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message;
1353        }
1354        if ($quiet) {
1355                printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
1356        } else {
1357                print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
1358                if (!file_name_is_absolute($smtp_server)) {
1359                        print "Server: $smtp_server\n";
1360                        print "MAIL FROM:<$raw_from>\n";
1361                        foreach my $entry (@recipients) {
1362                            print "RCPT TO:<$entry>\n";
1363                        }
1364                } else {
1365                        print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
1366                }
1367                print $header, "\n";
1368                if ($smtp) {
1369                        print "Result: ", $smtp->code, ' ',
1370                                ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
1371                } else {
1372                        print "Result: OK\n";
1373                }
1374        }
1375
1376        return 1;
1377}
1378
1379$reply_to = $initial_reply_to;
1380$references = $initial_reply_to || '';
1381$subject = $initial_subject;
1382$message_num = 0;
1383
1384foreach my $t (@files) {
1385        open my $fh, "<", $t or die "can't open file $t";
1386
1387        my $author = undef;
1388        my $sauthor = undef;
1389        my $author_encoding;
1390        my $has_content_type;
1391        my $body_encoding;
1392        my $xfer_encoding;
1393        my $has_mime_version;
1394        @to = ();
1395        @cc = ();
1396        @xh = ();
1397        my $input_format = undef;
1398        my @header = ();
1399        $message = "";
1400        $message_num++;
1401        # First unfold multiline header fields
1402        while(<$fh>) {
1403                last if /^\s*$/;
1404                if (/^\s+\S/ and @header) {
1405                        chomp($header[$#header]);
1406                        s/^\s+/ /;
1407                        $header[$#header] .= $_;
1408            } else {
1409                        push(@header, $_);
1410                }
1411        }
1412        # Now parse the header
1413        foreach(@header) {
1414                if (/^From /) {
1415                        $input_format = 'mbox';
1416                        next;
1417                }
1418                chomp;
1419                if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1420                        $input_format = 'mbox';
1421                }
1422
1423                if (defined $input_format && $input_format eq 'mbox') {
1424                        if (/^Subject:\s+(.*)$/i) {
1425                                $subject = $1;
1426                        }
1427                        elsif (/^From:\s+(.*)$/i) {
1428                                ($author, $author_encoding) = unquote_rfc2047($1);
1429                                $sauthor = sanitize_address($author);
1430                                next if $suppress_cc{'author'};
1431                                next if $suppress_cc{'self'} and $sauthor eq $sender;
1432                                printf("(mbox) Adding cc: %s from line '%s'\n",
1433                                        $1, $_) unless $quiet;
1434                                push @cc, $1;
1435                        }
1436                        elsif (/^To:\s+(.*)$/i) {
1437                                foreach my $addr (parse_address_line($1)) {
1438                                        printf("(mbox) Adding to: %s from line '%s'\n",
1439                                                $addr, $_) unless $quiet;
1440                                        push @to, $addr;
1441                                }
1442                        }
1443                        elsif (/^Cc:\s+(.*)$/i) {
1444                                foreach my $addr (parse_address_line($1)) {
1445                                        my $qaddr = unquote_rfc2047($addr);
1446                                        my $saddr = sanitize_address($qaddr);
1447                                        if ($saddr eq $sender) {
1448                                                next if ($suppress_cc{'self'});
1449                                        } else {
1450                                                next if ($suppress_cc{'cc'});
1451                                        }
1452                                        printf("(mbox) Adding cc: %s from line '%s'\n",
1453                                                $addr, $_) unless $quiet;
1454                                        push @cc, $addr;
1455                                }
1456                        }
1457                        elsif (/^Content-type:/i) {
1458                                $has_content_type = 1;
1459                                if (/charset="?([^ "]+)/) {
1460                                        $body_encoding = $1;
1461                                }
1462                                push @xh, $_;
1463                        }
1464                        elsif (/^MIME-Version/i) {
1465                                $has_mime_version = 1;
1466                                push @xh, $_;
1467                        }
1468                        elsif (/^Message-Id: (.*)/i) {
1469                                $message_id = $1;
1470                        }
1471                        elsif (/^Content-Transfer-Encoding: (.*)/i) {
1472                                $xfer_encoding = $1 if not defined $xfer_encoding;
1473                        }
1474                        elsif (!/^Date:\s/i && /^[-A-Za-z]+:\s+\S/) {
1475                                push @xh, $_;
1476                        }
1477
1478                } else {
1479                        # In the traditional
1480                        # "send lots of email" format,
1481                        # line 1 = cc
1482                        # line 2 = subject
1483                        # So let's support that, too.
1484                        $input_format = 'lots';
1485                        if (@cc == 0 && !$suppress_cc{'cc'}) {
1486                                printf("(non-mbox) Adding cc: %s from line '%s'\n",
1487                                        $_, $_) unless $quiet;
1488                                push @cc, $_;
1489                        } elsif (!defined $subject) {
1490                                $subject = $_;
1491                        }
1492                }
1493        }
1494        # Now parse the message body
1495        while(<$fh>) {
1496                $message .=  $_;
1497                if (/^(Signed-off-by|Cc): (.*)$/i) {
1498                        chomp;
1499                        my ($what, $c) = ($1, $2);
1500                        chomp $c;
1501                        my $sc = sanitize_address($c);
1502                        if ($sc eq $sender) {
1503                                next if ($suppress_cc{'self'});
1504                        } else {
1505                                next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1506                                next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1507                        }
1508                        push @cc, $c;
1509                        printf("(body) Adding cc: %s from line '%s'\n",
1510                                $c, $_) unless $quiet;
1511                }
1512        }
1513        close $fh;
1514
1515        push @to, recipients_cmd("to-cmd", "to", $to_cmd, $t)
1516                if defined $to_cmd;
1517        push @cc, recipients_cmd("cc-cmd", "cc", $cc_cmd, $t)
1518                if defined $cc_cmd && !$suppress_cc{'cccmd'};
1519
1520        if ($broken_encoding{$t} && !$has_content_type) {
1521                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1522                $has_content_type = 1;
1523                push @xh, "Content-Type: text/plain; charset=$auto_8bit_encoding";
1524                $body_encoding = $auto_8bit_encoding;
1525        }
1526
1527        if ($broken_encoding{$t} && !is_rfc2047_quoted($subject)) {
1528                $subject = quote_subject($subject, $auto_8bit_encoding);
1529        }
1530
1531        if (defined $sauthor and $sauthor ne $sender) {
1532                $message = "From: $author\n\n$message";
1533                if (defined $author_encoding) {
1534                        if ($has_content_type) {
1535                                if ($body_encoding eq $author_encoding) {
1536                                        # ok, we already have the right encoding
1537                                }
1538                                else {
1539                                        # uh oh, we should re-encode
1540                                }
1541                        }
1542                        else {
1543                                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1544                                $has_content_type = 1;
1545                                push @xh,
1546                                  "Content-Type: text/plain; charset=$author_encoding";
1547                        }
1548                }
1549        }
1550        if (defined $target_xfer_encoding) {
1551                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1552                $message = apply_transfer_encoding(
1553                        $message, $xfer_encoding, $target_xfer_encoding);
1554                $xfer_encoding = $target_xfer_encoding;
1555        }
1556        if (defined $xfer_encoding) {
1557                push @xh, "Content-Transfer-Encoding: $xfer_encoding";
1558        }
1559        if (defined $xfer_encoding or $has_content_type) {
1560                unshift @xh, 'MIME-Version: 1.0' unless $has_mime_version;
1561        }
1562
1563        $needs_confirm = (
1564                $confirm eq "always" or
1565                ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1566                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1567        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1568
1569        @to = validate_address_list(sanitize_address_list(@to));
1570        @cc = validate_address_list(sanitize_address_list(@cc));
1571
1572        @to = (@initial_to, @to);
1573        @cc = (@initial_cc, @cc);
1574
1575        if ($message_num == 1) {
1576                if (defined $cover_cc and $cover_cc) {
1577                        @initial_cc = @cc;
1578                }
1579                if (defined $cover_to and $cover_to) {
1580                        @initial_to = @to;
1581                }
1582        }
1583
1584        my $message_was_sent = send_message();
1585
1586        # set up for the next message
1587        if ($thread && $message_was_sent &&
1588                ($chain_reply_to || !defined $reply_to || length($reply_to) == 0 ||
1589                $message_num == 1)) {
1590                $reply_to = $message_id;
1591                if (length $references > 0) {
1592                        $references .= "\n $message_id";
1593                } else {
1594                        $references = "$message_id";
1595                }
1596        }
1597        $message_id = undef;
1598}
1599
1600# Execute a command (e.g. $to_cmd) to get a list of email addresses
1601# and return a results array
1602sub recipients_cmd {
1603        my ($prefix, $what, $cmd, $file) = @_;
1604
1605        my @addresses = ();
1606        open my $fh, "-|", "$cmd \Q$file\E"
1607            or die "($prefix) Could not execute '$cmd'";
1608        while (my $address = <$fh>) {
1609                $address =~ s/^\s*//g;
1610                $address =~ s/\s*$//g;
1611                $address = sanitize_address($address);
1612                next if ($address eq $sender and $suppress_cc{'self'});
1613                push @addresses, $address;
1614                printf("($prefix) Adding %s: %s from: '%s'\n",
1615                       $what, $address, $cmd) unless $quiet;
1616                }
1617        close $fh
1618            or die "($prefix) failed to close pipe to '$cmd'";
1619        return @addresses;
1620}
1621
1622cleanup_compose_files();
1623
1624sub cleanup_compose_files {
1625        unlink($compose_filename, $compose_filename . ".final") if $compose;
1626}
1627
1628$smtp->quit if $smtp;
1629
1630sub apply_transfer_encoding {
1631        my $message = shift;
1632        my $from = shift;
1633        my $to = shift;
1634
1635        return $message if ($from eq $to and $from ne '7bit');
1636
1637        require MIME::QuotedPrint;
1638        require MIME::Base64;
1639
1640        $message = MIME::QuotedPrint::decode($message)
1641                if ($from eq 'quoted-printable');
1642        $message = MIME::Base64::decode($message)
1643                if ($from eq 'base64');
1644
1645        die "cannot send message as 7bit"
1646                if ($to eq '7bit' and $message =~ /[^[:ascii:]]/);
1647        return $message
1648                if ($to eq '7bit' or $to eq '8bit');
1649        return MIME::QuotedPrint::encode($message, "\n", 0)
1650                if ($to eq 'quoted-printable');
1651        return MIME::Base64::encode($message, "\n")
1652                if ($to eq 'base64');
1653        die "invalid transfer encoding";
1654}
1655
1656sub unique_email_list {
1657        my %seen;
1658        my @emails;
1659
1660        foreach my $entry (@_) {
1661                my $clean = extract_valid_address_or_die($entry);
1662                $seen{$clean} ||= 0;
1663                next if $seen{$clean}++;
1664                push @emails, $entry;
1665        }
1666        return @emails;
1667}
1668
1669sub validate_patch {
1670        my $fn = shift;
1671        open(my $fh, '<', $fn)
1672                or die "unable to open $fn: $!\n";
1673        while (my $line = <$fh>) {
1674                if (length($line) > 998) {
1675                        return "$.: patch contains a line longer than 998 characters";
1676                }
1677        }
1678        return;
1679}
1680
1681sub file_has_nonascii {
1682        my $fn = shift;
1683        open(my $fh, '<', $fn)
1684                or die "unable to open $fn: $!\n";
1685        while (my $line = <$fh>) {
1686                return 1 if $line =~ /[^[:ascii:]]/;
1687        }
1688        return 0;
1689}
1690
1691sub body_or_subject_has_nonascii {
1692        my $fn = shift;
1693        open(my $fh, '<', $fn)
1694                or die "unable to open $fn: $!\n";
1695        while (my $line = <$fh>) {
1696                last if $line =~ /^$/;
1697                return 1 if $line =~ /^Subject.*[^[:ascii:]]/;
1698        }
1699        while (my $line = <$fh>) {
1700                return 1 if $line =~ /[^[:ascii:]]/;
1701        }
1702        return 0;
1703}