git-send-email.perlon commit Merge branch 'np/send-email-header-parsing' (fbc615b)
   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 POSIX qw/strftime/;
  23use Term::ReadLine;
  24use Getopt::Long;
  25use Text::ParseWords;
  26use Term::ANSIColor;
  27use File::Temp qw/ tempdir tempfile /;
  28use File::Spec::Functions qw(catdir catfile);
  29use Git::Error qw(:try);
  30use Cwd qw(abs_path cwd);
  31use Git;
  32use Git::I18N;
  33use Git::Mail::Address;
  34
  35Getopt::Long::Configure qw/ pass_through /;
  36
  37package FakeTerm;
  38sub new {
  39        my ($class, $reason) = @_;
  40        return bless \$reason, shift;
  41}
  42sub readline {
  43        my $self = shift;
  44        die "Cannot use readline on FakeTerm: $$self";
  45}
  46package main;
  47
  48
  49sub usage {
  50        print <<EOT;
  51git send-email [options] <file | directory | rev-list options >
  52git send-email --dump-aliases
  53
  54  Composing:
  55    --from                  <str>  * Email From:
  56    --[no-]to               <str>  * Email To:
  57    --[no-]cc               <str>  * Email Cc:
  58    --[no-]bcc              <str>  * Email Bcc:
  59    --subject               <str>  * Email "Subject:"
  60    --in-reply-to           <str>  * Email "In-Reply-To:"
  61    --[no-]xmailer                 * Add "X-Mailer:" header (default).
  62    --[no-]annotate                * Review each patch that will be sent in an editor.
  63    --compose                      * Open an editor for introduction.
  64    --compose-encoding      <str>  * Encoding to assume for introduction.
  65    --8bit-encoding         <str>  * Encoding to assume 8bit mails if undeclared
  66    --transfer-encoding     <str>  * Transfer encoding to use (quoted-printable, 8bit, base64)
  67
  68  Sending:
  69    --envelope-sender       <str>  * Email envelope sender.
  70    --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
  71                                     is optional. Default 'localhost'.
  72    --smtp-server-option    <str>  * Outgoing SMTP server option to use.
  73    --smtp-server-port      <int>  * Outgoing SMTP server port.
  74    --smtp-user             <str>  * Username for SMTP-AUTH.
  75    --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
  76    --smtp-encryption       <str>  * tls or ssl; anything else disables.
  77    --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
  78    --smtp-ssl-cert-path    <str>  * Path to ca-certificates (either directory or file).
  79                                     Pass an empty string to disable certificate
  80                                     verification.
  81    --smtp-domain           <str>  * The domain name sent to HELO/EHLO handshake
  82    --smtp-auth             <str>  * Space-separated list of allowed AUTH mechanisms.
  83                                     This setting forces to use one of the listed mechanisms.
  84    --smtp-debug            <0|1>  * Disable, enable Net::SMTP debug.
  85
  86    --batch-size            <int>  * send max <int> message per connection.
  87    --relogin-delay         <int>  * delay <int> seconds between two successive login.
  88                                     This option can only be used with --batch-size
  89
  90  Automating:
  91    --identity              <str>  * Use the sendemail.<id> options.
  92    --to-cmd                <str>  * Email To: via `<str> \$patch_path`
  93    --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
  94    --suppress-cc           <str>  * author, self, sob, cc, cccmd, body, bodycc, all.
  95    --[no-]cc-cover                * Email Cc: addresses in the cover letter.
  96    --[no-]to-cover                * Email To: addresses in the cover letter.
  97    --[no-]signed-off-by-cc        * Send to Signed-off-by: addresses. Default on.
  98    --[no-]suppress-from           * Send to self. Default off.
  99    --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default off.
 100    --[no-]thread                  * Use In-Reply-To: field. Default on.
 101
 102  Administering:
 103    --confirm               <str>  * Confirm recipients before sending;
 104                                     auto, cc, compose, always, or never.
 105    --quiet                        * Output one line of info per email.
 106    --dry-run                      * Don't actually send the emails.
 107    --[no-]validate                * Perform patch sanity checks. Default on.
 108    --[no-]format-patch            * understand any non optional arguments as
 109                                     `git format-patch` ones.
 110    --force                        * Send even if safety checks would prevent it.
 111
 112  Information:
 113    --dump-aliases                 * Dump configured aliases and exit.
 114
 115EOT
 116        exit(1);
 117}
 118
 119# most mail servers generate the Date: header, but not all...
 120sub format_2822_time {
 121        my ($time) = @_;
 122        my @localtm = localtime($time);
 123        my @gmttm = gmtime($time);
 124        my $localmin = $localtm[1] + $localtm[2] * 60;
 125        my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
 126        if ($localtm[0] != $gmttm[0]) {
 127                die __("local zone differs from GMT by a non-minute interval\n");
 128        }
 129        if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
 130                $localmin += 1440;
 131        } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 132                $localmin -= 1440;
 133        } elsif ($gmttm[6] != $localtm[6]) {
 134                die __("local time offset greater than or equal to 24 hours\n");
 135        }
 136        my $offset = $localmin - $gmtmin;
 137        my $offhour = $offset / 60;
 138        my $offmin = abs($offset % 60);
 139        if (abs($offhour) >= 24) {
 140                die __("local time offset greater than or equal to 24 hours\n");
 141        }
 142
 143        return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 144                       qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 145                       $localtm[3],
 146                       qw(Jan Feb Mar Apr May Jun
 147                          Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 148                       $localtm[5]+1900,
 149                       $localtm[2],
 150                       $localtm[1],
 151                       $localtm[0],
 152                       ($offset >= 0) ? '+' : '-',
 153                       abs($offhour),
 154                       $offmin,
 155                       );
 156}
 157
 158my $have_email_valid = eval { require Email::Valid; 1 };
 159my $smtp;
 160my $auth;
 161my $num_sent = 0;
 162
 163# Regexes for RFC 2047 productions.
 164my $re_token = qr/[^][()<>@,;:\\"\/?.= \000-\037\177-\377]+/;
 165my $re_encoded_text = qr/[^? \000-\037\177-\377]+/;
 166my $re_encoded_word = qr/=\?($re_token)\?($re_token)\?($re_encoded_text)\?=/;
 167
 168# Variables we fill in automatically, or via prompting:
 169my (@to,$no_to,@initial_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
 170        $initial_reply_to,$initial_subject,@files,
 171        $author,$sender,$smtp_authpass,$annotate,$use_xmailer,$compose,$time);
 172
 173my $envelope_sender;
 174
 175# Example reply to:
 176#$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 177
 178my $repo = eval { Git->repository() };
 179my @repo = $repo ? ($repo) : ();
 180my $term = eval {
 181        $ENV{"GIT_SEND_EMAIL_NOTTY"}
 182                ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
 183                : new Term::ReadLine 'git-send-email';
 184};
 185if ($@) {
 186        $term = new FakeTerm "$@: going non-interactive";
 187}
 188
 189# Behavior modification variables
 190my ($quiet, $dry_run) = (0, 0);
 191my $format_patch;
 192my $compose_filename;
 193my $force = 0;
 194my $dump_aliases = 0;
 195
 196# Handle interactive edition of files.
 197my $multiedit;
 198my $editor;
 199
 200sub do_edit {
 201        if (!defined($editor)) {
 202                $editor = Git::command_oneline('var', 'GIT_EDITOR');
 203        }
 204        if (defined($multiedit) && !$multiedit) {
 205                map {
 206                        system('sh', '-c', $editor.' "$@"', $editor, $_);
 207                        if (($? & 127) || ($? >> 8)) {
 208                                die(__("the editor exited uncleanly, aborting everything"));
 209                        }
 210                } @_;
 211        } else {
 212                system('sh', '-c', $editor.' "$@"', $editor, @_);
 213                if (($? & 127) || ($? >> 8)) {
 214                        die(__("the editor exited uncleanly, aborting everything"));
 215                }
 216        }
 217}
 218
 219# Variables with corresponding config settings
 220my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc);
 221my ($cover_cc, $cover_to);
 222my ($to_cmd, $cc_cmd);
 223my ($smtp_server, $smtp_server_port, @smtp_server_options);
 224my ($smtp_authuser, $smtp_encryption, $smtp_ssl_cert_path);
 225my ($batch_size, $relogin_delay);
 226my ($identity, $aliasfiletype, @alias_files, $smtp_domain, $smtp_auth);
 227my ($validate, $confirm);
 228my (@suppress_cc);
 229my ($auto_8bit_encoding);
 230my ($compose_encoding);
 231my ($target_xfer_encoding);
 232
 233my ($debug_net_smtp) = 0;               # Net::SMTP, see send_message()
 234
 235my %config_bool_settings = (
 236    "thread" => [\$thread, 1],
 237    "chainreplyto" => [\$chain_reply_to, 0],
 238    "suppressfrom" => [\$suppress_from, undef],
 239    "signedoffbycc" => [\$signed_off_by_cc, undef],
 240    "cccover" => [\$cover_cc, undef],
 241    "tocover" => [\$cover_to, undef],
 242    "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 243    "validate" => [\$validate, 1],
 244    "multiedit" => [\$multiedit, undef],
 245    "annotate" => [\$annotate, undef],
 246    "xmailer" => [\$use_xmailer, 1]
 247);
 248
 249my %config_settings = (
 250    "smtpserver" => \$smtp_server,
 251    "smtpserverport" => \$smtp_server_port,
 252    "smtpserveroption" => \@smtp_server_options,
 253    "smtpuser" => \$smtp_authuser,
 254    "smtppass" => \$smtp_authpass,
 255    "smtpdomain" => \$smtp_domain,
 256    "smtpauth" => \$smtp_auth,
 257    "smtpbatchsize" => \$batch_size,
 258    "smtprelogindelay" => \$relogin_delay,
 259    "to" => \@initial_to,
 260    "tocmd" => \$to_cmd,
 261    "cc" => \@initial_cc,
 262    "cccmd" => \$cc_cmd,
 263    "aliasfiletype" => \$aliasfiletype,
 264    "bcc" => \@bcclist,
 265    "suppresscc" => \@suppress_cc,
 266    "envelopesender" => \$envelope_sender,
 267    "confirm"   => \$confirm,
 268    "from" => \$sender,
 269    "assume8bitencoding" => \$auto_8bit_encoding,
 270    "composeencoding" => \$compose_encoding,
 271    "transferencoding" => \$target_xfer_encoding,
 272);
 273
 274my %config_path_settings = (
 275    "aliasesfile" => \@alias_files,
 276    "smtpsslcertpath" => \$smtp_ssl_cert_path,
 277);
 278
 279# Handle Uncouth Termination
 280sub signal_handler {
 281
 282        # Make text normal
 283        print color("reset"), "\n";
 284
 285        # SMTP password masked
 286        system "stty echo";
 287
 288        # tmp files from --compose
 289        if (defined $compose_filename) {
 290                if (-e $compose_filename) {
 291                        printf __("'%s' contains an intermediate version ".
 292                                  "of the email you were composing.\n"),
 293                                  $compose_filename;
 294                }
 295                if (-e ($compose_filename . ".final")) {
 296                        printf __("'%s.final' contains the composed email.\n"),
 297                                  $compose_filename;
 298                }
 299        }
 300
 301        exit;
 302};
 303
 304$SIG{TERM} = \&signal_handler;
 305$SIG{INT}  = \&signal_handler;
 306
 307# Begin by accumulating all the variables (defined above), that we will end up
 308# needing, first, from the command line:
 309
 310my $help;
 311my $rc = GetOptions("h" => \$help,
 312                    "dump-aliases" => \$dump_aliases);
 313usage() unless $rc;
 314die __("--dump-aliases incompatible with other options\n")
 315    if !$help and $dump_aliases and @ARGV;
 316$rc = GetOptions(
 317                    "sender|from=s" => \$sender,
 318                    "in-reply-to=s" => \$initial_reply_to,
 319                    "subject=s" => \$initial_subject,
 320                    "to=s" => \@initial_to,
 321                    "to-cmd=s" => \$to_cmd,
 322                    "no-to" => \$no_to,
 323                    "cc=s" => \@initial_cc,
 324                    "no-cc" => \$no_cc,
 325                    "bcc=s" => \@bcclist,
 326                    "no-bcc" => \$no_bcc,
 327                    "chain-reply-to!" => \$chain_reply_to,
 328                    "no-chain-reply-to" => sub {$chain_reply_to = 0},
 329                    "smtp-server=s" => \$smtp_server,
 330                    "smtp-server-option=s" => \@smtp_server_options,
 331                    "smtp-server-port=s" => \$smtp_server_port,
 332                    "smtp-user=s" => \$smtp_authuser,
 333                    "smtp-pass:s" => \$smtp_authpass,
 334                    "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 335                    "smtp-encryption=s" => \$smtp_encryption,
 336                    "smtp-ssl-cert-path=s" => \$smtp_ssl_cert_path,
 337                    "smtp-debug:i" => \$debug_net_smtp,
 338                    "smtp-domain:s" => \$smtp_domain,
 339                    "smtp-auth=s" => \$smtp_auth,
 340                    "identity=s" => \$identity,
 341                    "annotate!" => \$annotate,
 342                    "no-annotate" => sub {$annotate = 0},
 343                    "compose" => \$compose,
 344                    "quiet" => \$quiet,
 345                    "cc-cmd=s" => \$cc_cmd,
 346                    "suppress-from!" => \$suppress_from,
 347                    "no-suppress-from" => sub {$suppress_from = 0},
 348                    "suppress-cc=s" => \@suppress_cc,
 349                    "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 350                    "no-signed-off-cc|no-signed-off-by-cc" => sub {$signed_off_by_cc = 0},
 351                    "cc-cover|cc-cover!" => \$cover_cc,
 352                    "no-cc-cover" => sub {$cover_cc = 0},
 353                    "to-cover|to-cover!" => \$cover_to,
 354                    "no-to-cover" => sub {$cover_to = 0},
 355                    "confirm=s" => \$confirm,
 356                    "dry-run" => \$dry_run,
 357                    "envelope-sender=s" => \$envelope_sender,
 358                    "thread!" => \$thread,
 359                    "no-thread" => sub {$thread = 0},
 360                    "validate!" => \$validate,
 361                    "no-validate" => sub {$validate = 0},
 362                    "transfer-encoding=s" => \$target_xfer_encoding,
 363                    "format-patch!" => \$format_patch,
 364                    "no-format-patch" => sub {$format_patch = 0},
 365                    "8bit-encoding=s" => \$auto_8bit_encoding,
 366                    "compose-encoding=s" => \$compose_encoding,
 367                    "force" => \$force,
 368                    "xmailer!" => \$use_xmailer,
 369                    "no-xmailer" => sub {$use_xmailer = 0},
 370                    "batch-size=i" => \$batch_size,
 371                    "relogin-delay=i" => \$relogin_delay,
 372         );
 373
 374usage() if $help;
 375unless ($rc) {
 376    usage();
 377}
 378
 379die __("Cannot run git format-patch from outside a repository\n")
 380        if $format_patch and not $repo;
 381
 382die __("`batch-size` and `relogin` must be specified together " .
 383        "(via command-line or configuration option)\n")
 384        if defined $relogin_delay and not defined $batch_size;
 385
 386# Now, let's fill any that aren't set in with defaults:
 387
 388sub read_config {
 389        my ($prefix) = @_;
 390
 391        foreach my $setting (keys %config_bool_settings) {
 392                my $target = $config_bool_settings{$setting}->[0];
 393                $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 394        }
 395
 396        foreach my $setting (keys %config_path_settings) {
 397                my $target = $config_path_settings{$setting};
 398                if (ref($target) eq "ARRAY") {
 399                        unless (@$target) {
 400                                my @values = Git::config_path(@repo, "$prefix.$setting");
 401                                @$target = @values if (@values && defined $values[0]);
 402                        }
 403                }
 404                else {
 405                        $$target = Git::config_path(@repo, "$prefix.$setting") unless (defined $$target);
 406                }
 407        }
 408
 409        foreach my $setting (keys %config_settings) {
 410                my $target = $config_settings{$setting};
 411                next if $setting eq "to" and defined $no_to;
 412                next if $setting eq "cc" and defined $no_cc;
 413                next if $setting eq "bcc" and defined $no_bcc;
 414                if (ref($target) eq "ARRAY") {
 415                        unless (@$target) {
 416                                my @values = Git::config(@repo, "$prefix.$setting");
 417                                @$target = @values if (@values && defined $values[0]);
 418                        }
 419                }
 420                else {
 421                        $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 422                }
 423        }
 424
 425        if (!defined $smtp_encryption) {
 426                my $enc = Git::config(@repo, "$prefix.smtpencryption");
 427                if (defined $enc) {
 428                        $smtp_encryption = $enc;
 429                } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 430                        $smtp_encryption = 'ssl';
 431                }
 432        }
 433}
 434
 435# read configuration from [sendemail "$identity"], fall back on [sendemail]
 436$identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 437read_config("sendemail.$identity") if (defined $identity);
 438read_config("sendemail");
 439
 440# fall back on builtin bool defaults
 441foreach my $setting (values %config_bool_settings) {
 442        ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 443}
 444
 445# 'default' encryption is none -- this only prevents a warning
 446$smtp_encryption = '' unless (defined $smtp_encryption);
 447
 448# Set CC suppressions
 449my(%suppress_cc);
 450if (@suppress_cc) {
 451        foreach my $entry (@suppress_cc) {
 452                die sprintf(__("Unknown --suppress-cc field: '%s'\n"), $entry)
 453                        unless $entry =~ /^(?:all|cccmd|cc|author|self|sob|body|bodycc)$/;
 454                $suppress_cc{$entry} = 1;
 455        }
 456}
 457
 458if ($suppress_cc{'all'}) {
 459        foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
 460                $suppress_cc{$entry} = 1;
 461        }
 462        delete $suppress_cc{'all'};
 463}
 464
 465# If explicit old-style ones are specified, they trump --suppress-cc.
 466$suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 467$suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 468
 469if ($suppress_cc{'body'}) {
 470        foreach my $entry (qw (sob bodycc)) {
 471                $suppress_cc{$entry} = 1;
 472        }
 473        delete $suppress_cc{'body'};
 474}
 475
 476# Set confirm's default value
 477my $confirm_unconfigured = !defined $confirm;
 478if ($confirm_unconfigured) {
 479        $confirm = scalar %suppress_cc ? 'compose' : 'auto';
 480};
 481die sprintf(__("Unknown --confirm setting: '%s'\n"), $confirm)
 482        unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
 483
 484# Debugging, print out the suppressions.
 485if (0) {
 486        print "suppressions:\n";
 487        foreach my $entry (keys %suppress_cc) {
 488                printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 489        }
 490}
 491
 492my ($repoauthor, $repocommitter);
 493($repoauthor) = Git::ident_person(@repo, 'author');
 494($repocommitter) = Git::ident_person(@repo, 'committer');
 495
 496sub parse_address_line {
 497        return map { $_->format } Mail::Address->parse($_[0]);
 498}
 499
 500sub split_addrs {
 501        return quotewords('\s*,\s*', 1, @_);
 502}
 503
 504my %aliases;
 505
 506sub parse_sendmail_alias {
 507        local $_ = shift;
 508        if (/"/) {
 509                printf STDERR __("warning: sendmail alias with quotes is not supported: %s\n"), $_;
 510        } elsif (/:include:/) {
 511                printf STDERR __("warning: `:include:` not supported: %s\n"), $_;
 512        } elsif (/[\/|]/) {
 513                printf STDERR __("warning: `/file` or `|pipe` redirection not supported: %s\n"), $_;
 514        } elsif (/^(\S+?)\s*:\s*(.+)$/) {
 515                my ($alias, $addr) = ($1, $2);
 516                $aliases{$alias} = [ split_addrs($addr) ];
 517        } else {
 518                printf STDERR __("warning: sendmail line is not recognized: %s\n"), $_;
 519        }
 520}
 521
 522sub parse_sendmail_aliases {
 523        my $fh = shift;
 524        my $s = '';
 525        while (<$fh>) {
 526                chomp;
 527                next if /^\s*$/ || /^\s*#/;
 528                $s .= $_, next if $s =~ s/\\$// || s/^\s+//;
 529                parse_sendmail_alias($s) if $s;
 530                $s = $_;
 531        }
 532        $s =~ s/\\$//; # silently tolerate stray '\' on last line
 533        parse_sendmail_alias($s) if $s;
 534}
 535
 536my %parse_alias = (
 537        # multiline formats can be supported in the future
 538        mutt => sub { my $fh = shift; while (<$fh>) {
 539                if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
 540                        my ($alias, $addr) = ($1, $2);
 541                        $addr =~ s/#.*$//; # mutt allows # comments
 542                        # commas delimit multiple addresses
 543                        my @addr = split_addrs($addr);
 544
 545                        # quotes may be escaped in the file,
 546                        # unescape them so we do not double-escape them later.
 547                        s/\\"/"/g foreach @addr;
 548                        $aliases{$alias} = \@addr
 549                }}},
 550        mailrc => sub { my $fh = shift; while (<$fh>) {
 551                if (/^alias\s+(\S+)\s+(.*?)\s*$/) {
 552                        # spaces delimit multiple addresses
 553                        $aliases{$1} = [ quotewords('\s+', 0, $2) ];
 554                }}},
 555        pine => sub { my $fh = shift; my $f='\t[^\t]*';
 556                for (my $x = ''; defined($x); $x = $_) {
 557                        chomp $x;
 558                        $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 559                        $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 560                        $aliases{$1} = [ split_addrs($2) ];
 561                }},
 562        elm => sub  { my $fh = shift;
 563                      while (<$fh>) {
 564                          if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
 565                              my ($alias, $addr) = ($1, $2);
 566                               $aliases{$alias} = [ split_addrs($addr) ];
 567                          }
 568                      } },
 569        sendmail => \&parse_sendmail_aliases,
 570        gnus => sub { my $fh = shift; while (<$fh>) {
 571                if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 572                        $aliases{$1} = [ $2 ];
 573                }}}
 574);
 575
 576if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 577        foreach my $file (@alias_files) {
 578                open my $fh, '<', $file or die "opening $file: $!\n";
 579                $parse_alias{$aliasfiletype}->($fh);
 580                close $fh;
 581        }
 582}
 583
 584if ($dump_aliases) {
 585    print "$_\n" for (sort keys %aliases);
 586    exit(0);
 587}
 588
 589# is_format_patch_arg($f) returns 0 if $f names a patch, or 1 if
 590# $f is a revision list specification to be passed to format-patch.
 591sub is_format_patch_arg {
 592        return unless $repo;
 593        my $f = shift;
 594        try {
 595                $repo->command('rev-parse', '--verify', '--quiet', $f);
 596                if (defined($format_patch)) {
 597                        return $format_patch;
 598                }
 599                die sprintf(__ <<EOF, $f, $f);
 600File '%s' exists but it could also be the range of commits
 601to produce patches for.  Please disambiguate by...
 602
 603    * Saying "./%s" if you mean a file; or
 604    * Giving --format-patch option if you mean a range.
 605EOF
 606        } catch Git::Error::Command with {
 607                # Not a valid revision.  Treat it as a filename.
 608                return 0;
 609        }
 610}
 611
 612# Now that all the defaults are set, process the rest of the command line
 613# arguments and collect up the files that need to be processed.
 614my @rev_list_opts;
 615while (defined(my $f = shift @ARGV)) {
 616        if ($f eq "--") {
 617                push @rev_list_opts, "--", @ARGV;
 618                @ARGV = ();
 619        } elsif (-d $f and !is_format_patch_arg($f)) {
 620                opendir my $dh, $f
 621                        or die sprintf(__("Failed to opendir %s: %s"), $f, $!);
 622
 623                push @files, grep { -f $_ } map { catfile($f, $_) }
 624                                sort readdir $dh;
 625                closedir $dh;
 626        } elsif ((-f $f or -p $f) and !is_format_patch_arg($f)) {
 627                push @files, $f;
 628        } else {
 629                push @rev_list_opts, $f;
 630        }
 631}
 632
 633if (@rev_list_opts) {
 634        die __("Cannot run git format-patch from outside a repository\n")
 635                unless $repo;
 636        push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 637}
 638
 639@files = handle_backup_files(@files);
 640
 641if ($validate) {
 642        foreach my $f (@files) {
 643                unless (-p $f) {
 644                        my $error = validate_patch($f);
 645                        $error and die sprintf(__("fatal: %s: %s\nwarning: no patches were sent\n"),
 646                                                  $f, $error);
 647                }
 648        }
 649}
 650
 651if (@files) {
 652        unless ($quiet) {
 653                print $_,"\n" for (@files);
 654        }
 655} else {
 656        print STDERR __("\nNo patch files specified!\n\n");
 657        usage();
 658}
 659
 660sub get_patch_subject {
 661        my $fn = shift;
 662        open (my $fh, '<', $fn);
 663        while (my $line = <$fh>) {
 664                next unless ($line =~ /^Subject: (.*)$/);
 665                close $fh;
 666                return "GIT: $1\n";
 667        }
 668        close $fh;
 669        die sprintf(__("No subject line in %s?"), $fn);
 670}
 671
 672if ($compose) {
 673        # Note that this does not need to be secure, but we will make a small
 674        # effort to have it be unique
 675        $compose_filename = ($repo ?
 676                tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 677                tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 678        open my $c, ">", $compose_filename
 679                or die sprintf(__("Failed to open for writing %s: %s"), $compose_filename, $!);
 680
 681
 682        my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 683        my $tpl_subject = $initial_subject || '';
 684        my $tpl_reply_to = $initial_reply_to || '';
 685
 686        print $c <<EOT1, Git::prefix_lines("GIT: ", __ <<EOT2), <<EOT3;
 687From $tpl_sender # This line is ignored.
 688EOT1
 689Lines beginning in "GIT:" will be removed.
 690Consider including an overall diffstat or table of contents
 691for the patch you are writing.
 692
 693Clear the body content if you don't wish to send a summary.
 694EOT2
 695From: $tpl_sender
 696Subject: $tpl_subject
 697In-Reply-To: $tpl_reply_to
 698
 699EOT3
 700        for my $f (@files) {
 701                print $c get_patch_subject($f);
 702        }
 703        close $c;
 704
 705        if ($annotate) {
 706                do_edit($compose_filename, @files);
 707        } else {
 708                do_edit($compose_filename);
 709        }
 710
 711        open $c, "<", $compose_filename
 712                or die sprintf(__("Failed to open %s: %s"), $compose_filename, $!);
 713
 714        if (!defined $compose_encoding) {
 715                $compose_encoding = "UTF-8";
 716        }
 717
 718        my %parsed_email;
 719        while (my $line = <$c>) {
 720                next if $line =~ m/^GIT:/;
 721                parse_header_line($line, \%parsed_email);
 722                if ($line =~ /^$/) {
 723                        $parsed_email{'body'} = filter_body($c);
 724                }
 725        }
 726        close $c;
 727
 728        open my $c2, ">", $compose_filename . ".final"
 729        or die sprintf(__("Failed to open %s.final: %s"), $compose_filename, $!);
 730
 731
 732        if ($parsed_email{'From'}) {
 733                $sender = delete($parsed_email{'From'});
 734        }
 735        if ($parsed_email{'In-Reply-To'}) {
 736                $initial_reply_to = delete($parsed_email{'In-Reply-To'});
 737        }
 738        if ($parsed_email{'Subject'}) {
 739                $initial_subject = delete($parsed_email{'Subject'});
 740                print $c2 "Subject: " .
 741                        quote_subject($initial_subject, $compose_encoding) .
 742                        "\n";
 743        }
 744
 745        if ($parsed_email{'MIME-Version'}) {
 746                print $c2 "MIME-Version: $parsed_email{'MIME-Version'}\n",
 747                                "Content-Type: $parsed_email{'Content-Type'};\n",
 748                                "Content-Transfer-Encoding: $parsed_email{'Content-Transfer-Encoding'}\n";
 749                delete($parsed_email{'MIME-Version'});
 750                delete($parsed_email{'Content-Type'});
 751                delete($parsed_email{'Content-Transfer-Encoding'});
 752        } elsif (file_has_nonascii($compose_filename)) {
 753                my $content_type = (delete($parsed_email{'Content-Type'}) or
 754                        "text/plain; charset=$compose_encoding");
 755                print $c2 "MIME-Version: 1.0\n",
 756                        "Content-Type: $content_type\n",
 757                        "Content-Transfer-Encoding: 8bit\n";
 758        }
 759        # Preserve unknown headers
 760        foreach my $key (keys %parsed_email) {
 761                next if $key eq 'body';
 762                print $c2 "$key: $parsed_email{$key}";
 763        }
 764
 765        if ($parsed_email{'body'}) {
 766                print $c2 "\n$parsed_email{'body'}\n";
 767                delete($parsed_email{'body'});
 768        } else {
 769                print __("Summary email is empty, skipping it\n");
 770                $compose = -1;
 771        }
 772
 773        close $c2;
 774
 775} elsif ($annotate) {
 776        do_edit(@files);
 777}
 778
 779sub ask {
 780        my ($prompt, %arg) = @_;
 781        my $valid_re = $arg{valid_re};
 782        my $default = $arg{default};
 783        my $confirm_only = $arg{confirm_only};
 784        my $resp;
 785        my $i = 0;
 786        return defined $default ? $default : undef
 787                unless defined $term->IN and defined fileno($term->IN) and
 788                       defined $term->OUT and defined fileno($term->OUT);
 789        while ($i++ < 10) {
 790                $resp = $term->readline($prompt);
 791                if (!defined $resp) { # EOF
 792                        print "\n";
 793                        return defined $default ? $default : undef;
 794                }
 795                if ($resp eq '' and defined $default) {
 796                        return $default;
 797                }
 798                if (!defined $valid_re or $resp =~ /$valid_re/) {
 799                        return $resp;
 800                }
 801                if ($confirm_only) {
 802                        my $yesno = $term->readline(
 803                                # TRANSLATORS: please keep [y/N] as is.
 804                                sprintf(__("Are you sure you want to use <%s> [y/N]? "), $resp));
 805                        if (defined $yesno && $yesno =~ /y/i) {
 806                                return $resp;
 807                        }
 808                }
 809        }
 810        return;
 811}
 812
 813sub parse_header_line {
 814        my $lines = shift;
 815        my $parsed_line = shift;
 816        my $addr_pat = join "|", qw(To Cc Bcc);
 817
 818        foreach (split(/\n/, $lines)) {
 819                if (/^($addr_pat):\s*(.+)$/i) {
 820                        $parsed_line->{$1} = [ parse_address_line($2) ];
 821                } elsif (/^([^:]*):\s*(.+)\s*$/i) {
 822                        $parsed_line->{$1} = $2;
 823                }
 824        }
 825}
 826
 827sub filter_body {
 828        my $c = shift;
 829        my $body = "";
 830        while (my $body_line = <$c>) {
 831                if ($body_line !~ m/^GIT:/) {
 832                        $body .= $body_line;
 833                }
 834        }
 835        return $body;
 836}
 837
 838
 839my %broken_encoding;
 840
 841sub file_declares_8bit_cte {
 842        my $fn = shift;
 843        open (my $fh, '<', $fn);
 844        while (my $line = <$fh>) {
 845                last if ($line =~ /^$/);
 846                return 1 if ($line =~ /^Content-Transfer-Encoding: .*8bit.*$/);
 847        }
 848        close $fh;
 849        return 0;
 850}
 851
 852foreach my $f (@files) {
 853        next unless (body_or_subject_has_nonascii($f)
 854                     && !file_declares_8bit_cte($f));
 855        $broken_encoding{$f} = 1;
 856}
 857
 858if (!defined $auto_8bit_encoding && scalar %broken_encoding) {
 859        print __("The following files are 8bit, but do not declare " .
 860                 "a Content-Transfer-Encoding.\n");
 861        foreach my $f (sort keys %broken_encoding) {
 862                print "    $f\n";
 863        }
 864        $auto_8bit_encoding = ask(__("Which 8bit encoding should I declare [UTF-8]? "),
 865                                  valid_re => qr/.{4}/, confirm_only => 1,
 866                                  default => "UTF-8");
 867}
 868
 869if (!$force) {
 870        for my $f (@files) {
 871                if (get_patch_subject($f) =~ /\Q*** SUBJECT HERE ***\E/) {
 872                        die sprintf(__("Refusing to send because the patch\n\t%s\n"
 873                                . "has the template subject '*** SUBJECT HERE ***'. "
 874                                . "Pass --force if you really want to send.\n"), $f);
 875                }
 876        }
 877}
 878
 879if (defined $sender) {
 880        $sender =~ s/^\s+|\s+$//g;
 881        ($sender) = expand_aliases($sender);
 882} else {
 883        $sender = $repoauthor || $repocommitter || '';
 884}
 885
 886# $sender could be an already sanitized address
 887# (e.g. sendemail.from could be manually sanitized by user).
 888# But it's a no-op to run sanitize_address on an already sanitized address.
 889$sender = sanitize_address($sender);
 890
 891my $to_whom = __("To whom should the emails be sent (if anyone)?");
 892my $prompting = 0;
 893if (!@initial_to && !defined $to_cmd) {
 894        my $to = ask("$to_whom ",
 895                     default => "",
 896                     valid_re => qr/\@.*\./, confirm_only => 1);
 897        push @initial_to, parse_address_line($to) if defined $to; # sanitized/validated later
 898        $prompting++;
 899}
 900
 901sub expand_aliases {
 902        return map { expand_one_alias($_) } @_;
 903}
 904
 905my %EXPANDED_ALIASES;
 906sub expand_one_alias {
 907        my $alias = shift;
 908        if ($EXPANDED_ALIASES{$alias}) {
 909                die sprintf(__("fatal: alias '%s' expands to itself\n"), $alias);
 910        }
 911        local $EXPANDED_ALIASES{$alias} = 1;
 912        return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 913}
 914
 915@initial_to = process_address_list(@initial_to);
 916@initial_cc = process_address_list(@initial_cc);
 917@bcclist = process_address_list(@bcclist);
 918
 919if ($thread && !defined $initial_reply_to && $prompting) {
 920        $initial_reply_to = ask(
 921                __("Message-ID to be used as In-Reply-To for the first email (if any)? "),
 922                default => "",
 923                valid_re => qr/\@.*\./, confirm_only => 1);
 924}
 925if (defined $initial_reply_to) {
 926        $initial_reply_to =~ s/^\s*<?//;
 927        $initial_reply_to =~ s/>?\s*$//;
 928        $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 929}
 930
 931if (!defined $smtp_server) {
 932        my @sendmail_paths = qw( /usr/sbin/sendmail /usr/lib/sendmail );
 933        push @sendmail_paths, map {"$_/sendmail"} split /:/, $ENV{PATH};
 934        foreach (@sendmail_paths) {
 935                if (-x $_) {
 936                        $smtp_server = $_;
 937                        last;
 938                }
 939        }
 940        $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 941}
 942
 943if ($compose && $compose > 0) {
 944        @files = ($compose_filename . ".final", @files);
 945}
 946
 947# Variables we set as part of the loop over files
 948our ($message_id, %mail, $subject, $reply_to, $references, $message,
 949        $needs_confirm, $message_num, $ask_default);
 950
 951sub extract_valid_address {
 952        my $address = shift;
 953        my $local_part_regexp = qr/[^<>"\s@]+/;
 954        my $domain_regexp = qr/[^.<>"\s@]+(?:\.[^.<>"\s@]+)+/;
 955
 956        # check for a local address:
 957        return $address if ($address =~ /^($local_part_regexp)$/);
 958
 959        $address =~ s/^\s*<(.*)>\s*$/$1/;
 960        if ($have_email_valid) {
 961                return scalar Email::Valid->address($address);
 962        }
 963
 964        # less robust/correct than the monster regexp in Email::Valid,
 965        # but still does a 99% job, and one less dependency
 966        return $1 if $address =~ /($local_part_regexp\@$domain_regexp)/;
 967        return;
 968}
 969
 970sub extract_valid_address_or_die {
 971        my $address = shift;
 972        $address = extract_valid_address($address);
 973        die sprintf(__("error: unable to extract a valid address from: %s\n"), $address)
 974                if !$address;
 975        return $address;
 976}
 977
 978sub validate_address {
 979        my $address = shift;
 980        while (!extract_valid_address($address)) {
 981                printf STDERR __("error: unable to extract a valid address from: %s\n"), $address;
 982                # TRANSLATORS: Make sure to include [q] [d] [e] in your
 983                # translation. The program will only accept English input
 984                # at this point.
 985                $_ = ask(__("What to do with this address? ([q]uit|[d]rop|[e]dit): "),
 986                        valid_re => qr/^(?:quit|q|drop|d|edit|e)/i,
 987                        default => 'q');
 988                if (/^d/i) {
 989                        return undef;
 990                } elsif (/^q/i) {
 991                        cleanup_compose_files();
 992                        exit(0);
 993                }
 994                $address = ask("$to_whom ",
 995                        default => "",
 996                        valid_re => qr/\@.*\./, confirm_only => 1);
 997        }
 998        return $address;
 999}
1000
1001sub validate_address_list {
1002        return (grep { defined $_ }
1003                map { validate_address($_) } @_);
1004}
1005
1006# Usually don't need to change anything below here.
1007
1008# we make a "fake" message id by taking the current number
1009# of seconds since the beginning of Unix time and tacking on
1010# a random number to the end, in case we are called quicker than
1011# 1 second since the last time we were called.
1012
1013# We'll setup a template for the message id, using the "from" address:
1014
1015my ($message_id_stamp, $message_id_serial);
1016sub make_message_id {
1017        my $uniq;
1018        if (!defined $message_id_stamp) {
1019                $message_id_stamp = strftime("%Y%m%d%H%M%S.$$", gmtime(time));
1020                $message_id_serial = 0;
1021        }
1022        $message_id_serial++;
1023        $uniq = "$message_id_stamp-$message_id_serial";
1024
1025        my $du_part;
1026        for ($sender, $repocommitter, $repoauthor) {
1027                $du_part = extract_valid_address(sanitize_address($_));
1028                last if (defined $du_part and $du_part ne '');
1029        }
1030        if (not defined $du_part or $du_part eq '') {
1031                require Sys::Hostname;
1032                $du_part = 'user@' . Sys::Hostname::hostname();
1033        }
1034        my $message_id_template = "<%s-%s>";
1035        $message_id = sprintf($message_id_template, $uniq, $du_part);
1036        #print "new message id = $message_id\n"; # Was useful for debugging
1037}
1038
1039
1040
1041$time = time - scalar $#files;
1042
1043sub unquote_rfc2047 {
1044        local ($_) = @_;
1045        my $charset;
1046        my $sep = qr/[ \t]+/;
1047        s{$re_encoded_word(?:$sep$re_encoded_word)*}{
1048                my @words = split $sep, $&;
1049                foreach (@words) {
1050                        m/$re_encoded_word/;
1051                        $charset = $1;
1052                        my $encoding = $2;
1053                        my $text = $3;
1054                        if ($encoding eq 'q' || $encoding eq 'Q') {
1055                                $_ = $text;
1056                                s/_/ /g;
1057                                s/=([0-9A-F]{2})/chr(hex($1))/egi;
1058                        } else {
1059                                # other encodings not supported yet
1060                        }
1061                }
1062                join '', @words;
1063        }eg;
1064        return wantarray ? ($_, $charset) : $_;
1065}
1066
1067sub quote_rfc2047 {
1068        local $_ = shift;
1069        my $encoding = shift || 'UTF-8';
1070        s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
1071        s/(.*)/=\?$encoding\?q\?$1\?=/;
1072        return $_;
1073}
1074
1075sub is_rfc2047_quoted {
1076        my $s = shift;
1077        length($s) <= 75 &&
1078        $s =~ m/^(?:"[[:ascii:]]*"|$re_encoded_word)$/o;
1079}
1080
1081sub subject_needs_rfc2047_quoting {
1082        my $s = shift;
1083
1084        return ($s =~ /[^[:ascii:]]/) || ($s =~ /=\?/);
1085}
1086
1087sub quote_subject {
1088        local $subject = shift;
1089        my $encoding = shift || 'UTF-8';
1090
1091        if (subject_needs_rfc2047_quoting($subject)) {
1092                return quote_rfc2047($subject, $encoding);
1093        }
1094        return $subject;
1095}
1096
1097# use the simplest quoting being able to handle the recipient
1098sub sanitize_address {
1099        my ($recipient) = @_;
1100
1101        # remove garbage after email address
1102        $recipient =~ s/(.*>).*$/$1/;
1103
1104        my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
1105
1106        if (not $recipient_name) {
1107                return $recipient;
1108        }
1109
1110        # if recipient_name is already quoted, do nothing
1111        if (is_rfc2047_quoted($recipient_name)) {
1112                return $recipient;
1113        }
1114
1115        # remove non-escaped quotes
1116        $recipient_name =~ s/(^|[^\\])"/$1/g;
1117
1118        # rfc2047 is needed if a non-ascii char is included
1119        if ($recipient_name =~ /[^[:ascii:]]/) {
1120                $recipient_name = quote_rfc2047($recipient_name);
1121        }
1122
1123        # double quotes are needed if specials or CTLs are included
1124        elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
1125                $recipient_name =~ s/([\\\r])/\\$1/g;
1126                $recipient_name = qq["$recipient_name"];
1127        }
1128
1129        return "$recipient_name $recipient_addr";
1130
1131}
1132
1133sub strip_garbage_one_address {
1134        my ($addr) = @_;
1135        chomp $addr;
1136        if ($addr =~ /^(("[^"]*"|[^"<]*)? *<[^>]*>).*/) {
1137                # "Foo Bar" <foobar@example.com> [possibly garbage here]
1138                # Foo Bar <foobar@example.com> [possibly garbage here]
1139                return $1;
1140        }
1141        if ($addr =~ /^(<[^>]*>).*/) {
1142                # <foo@example.com> [possibly garbage here]
1143                # if garbage contains other addresses, they are ignored.
1144                return $1;
1145        }
1146        if ($addr =~ /^([^"#,\s]*)/) {
1147                # address without quoting: remove anything after the address
1148                return $1;
1149        }
1150        return $addr;
1151}
1152
1153sub sanitize_address_list {
1154        return (map { sanitize_address($_) } @_);
1155}
1156
1157sub process_address_list {
1158        my @addr_list = map { parse_address_line($_) } @_;
1159        @addr_list = expand_aliases(@addr_list);
1160        @addr_list = sanitize_address_list(@addr_list);
1161        @addr_list = validate_address_list(@addr_list);
1162        return @addr_list;
1163}
1164
1165# Returns the local Fully Qualified Domain Name (FQDN) if available.
1166#
1167# Tightly configured MTAa require that a caller sends a real DNS
1168# domain name that corresponds the IP address in the HELO/EHLO
1169# handshake. This is used to verify the connection and prevent
1170# spammers from trying to hide their identity. If the DNS and IP don't
1171# match, the receiveing MTA may deny the connection.
1172#
1173# Here is a deny example of Net::SMTP with the default "localhost.localdomain"
1174#
1175# Net::SMTP=GLOB(0x267ec28)>>> EHLO localhost.localdomain
1176# Net::SMTP=GLOB(0x267ec28)<<< 550 EHLO argument does not match calling host
1177#
1178# This maildomain*() code is based on ideas in Perl library Test::Reporter
1179# /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
1180
1181sub valid_fqdn {
1182        my $domain = shift;
1183        return defined $domain && !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./;
1184}
1185
1186sub maildomain_net {
1187        my $maildomain;
1188
1189        if (eval { require Net::Domain; 1 }) {
1190                my $domain = Net::Domain::domainname();
1191                $maildomain = $domain if valid_fqdn($domain);
1192        }
1193
1194        return $maildomain;
1195}
1196
1197sub maildomain_mta {
1198        my $maildomain;
1199
1200        if (eval { require Net::SMTP; 1 }) {
1201                for my $host (qw(mailhost localhost)) {
1202                        my $smtp = Net::SMTP->new($host);
1203                        if (defined $smtp) {
1204                                my $domain = $smtp->domain;
1205                                $smtp->quit;
1206
1207                                $maildomain = $domain if valid_fqdn($domain);
1208
1209                                last if $maildomain;
1210                        }
1211                }
1212        }
1213
1214        return $maildomain;
1215}
1216
1217sub maildomain {
1218        return maildomain_net() || maildomain_mta() || 'localhost.localdomain';
1219}
1220
1221sub smtp_host_string {
1222        if (defined $smtp_server_port) {
1223                return "$smtp_server:$smtp_server_port";
1224        } else {
1225                return $smtp_server;
1226        }
1227}
1228
1229# Returns 1 if authentication succeeded or was not necessary
1230# (smtp_user was not specified), and 0 otherwise.
1231
1232sub smtp_auth_maybe {
1233        if (!defined $smtp_authuser || $auth) {
1234                return 1;
1235        }
1236
1237        # Workaround AUTH PLAIN/LOGIN interaction defect
1238        # with Authen::SASL::Cyrus
1239        eval {
1240                require Authen::SASL;
1241                Authen::SASL->import(qw(Perl));
1242        };
1243
1244        # Check mechanism naming as defined in:
1245        # https://tools.ietf.org/html/rfc4422#page-8
1246        if ($smtp_auth && $smtp_auth !~ /^(\b[A-Z0-9-_]{1,20}\s*)*$/) {
1247                die "invalid smtp auth: '${smtp_auth}'";
1248        }
1249
1250        # TODO: Authentication may fail not because credentials were
1251        # invalid but due to other reasons, in which we should not
1252        # reject credentials.
1253        $auth = Git::credential({
1254                'protocol' => 'smtp',
1255                'host' => smtp_host_string(),
1256                'username' => $smtp_authuser,
1257                # if there's no password, "git credential fill" will
1258                # give us one, otherwise it'll just pass this one.
1259                'password' => $smtp_authpass
1260        }, sub {
1261                my $cred = shift;
1262
1263                if ($smtp_auth) {
1264                        my $sasl = Authen::SASL->new(
1265                                mechanism => $smtp_auth,
1266                                callback => {
1267                                        user => $cred->{'username'},
1268                                        pass => $cred->{'password'},
1269                                        authname => $cred->{'username'},
1270                                }
1271                        );
1272
1273                        return !!$smtp->auth($sasl);
1274                }
1275
1276                return !!$smtp->auth($cred->{'username'}, $cred->{'password'});
1277        });
1278
1279        return $auth;
1280}
1281
1282sub ssl_verify_params {
1283        eval {
1284                require IO::Socket::SSL;
1285                IO::Socket::SSL->import(qw/SSL_VERIFY_PEER SSL_VERIFY_NONE/);
1286        };
1287        if ($@) {
1288                print STDERR "Not using SSL_VERIFY_PEER due to out-of-date IO::Socket::SSL.\n";
1289                return;
1290        }
1291
1292        if (!defined $smtp_ssl_cert_path) {
1293                # use the OpenSSL defaults
1294                return (SSL_verify_mode => SSL_VERIFY_PEER());
1295        }
1296
1297        if ($smtp_ssl_cert_path eq "") {
1298                return (SSL_verify_mode => SSL_VERIFY_NONE());
1299        } elsif (-d $smtp_ssl_cert_path) {
1300                return (SSL_verify_mode => SSL_VERIFY_PEER(),
1301                        SSL_ca_path => $smtp_ssl_cert_path);
1302        } elsif (-f $smtp_ssl_cert_path) {
1303                return (SSL_verify_mode => SSL_VERIFY_PEER(),
1304                        SSL_ca_file => $smtp_ssl_cert_path);
1305        } else {
1306                die sprintf(__("CA path \"%s\" does not exist"), $smtp_ssl_cert_path);
1307        }
1308}
1309
1310sub file_name_is_absolute {
1311        my ($path) = @_;
1312
1313        # msys does not grok DOS drive-prefixes
1314        if ($^O eq 'msys') {
1315                return ($path =~ m#^/# || $path =~ m#^[a-zA-Z]\:#)
1316        }
1317
1318        require File::Spec::Functions;
1319        return File::Spec::Functions::file_name_is_absolute($path);
1320}
1321
1322# Returns 1 if the message was sent, and 0 otherwise.
1323# In actuality, the whole program dies when there
1324# is an error sending a message.
1325
1326sub send_message {
1327        my @recipients = unique_email_list(@to);
1328        @cc = (grep { my $cc = extract_valid_address_or_die($_);
1329                      not grep { $cc eq $_ || $_ =~ /<\Q${cc}\E>$/ } @recipients
1330                    }
1331               @cc);
1332        my $to = join (",\n\t", @recipients);
1333        @recipients = unique_email_list(@recipients,@cc,@bcclist);
1334        @recipients = (map { extract_valid_address_or_die($_) } @recipients);
1335        my $date = format_2822_time($time++);
1336        my $gitversion = '@@GIT_VERSION@@';
1337        if ($gitversion =~ m/..GIT_VERSION../) {
1338            $gitversion = Git::version();
1339        }
1340
1341        my $cc = join(",\n\t", unique_email_list(@cc));
1342        my $ccline = "";
1343        if ($cc ne '') {
1344                $ccline = "\nCc: $cc";
1345        }
1346        make_message_id() unless defined($message_id);
1347
1348        my $header = "From: $sender
1349To: $to${ccline}
1350Subject: $subject
1351Date: $date
1352Message-Id: $message_id
1353";
1354        if ($use_xmailer) {
1355                $header .= "X-Mailer: git-send-email $gitversion\n";
1356        }
1357        if ($reply_to) {
1358
1359                $header .= "In-Reply-To: $reply_to\n";
1360                $header .= "References: $references\n";
1361        }
1362        if (@xh) {
1363                $header .= join("\n", @xh) . "\n";
1364        }
1365
1366        my @sendmail_parameters = ('-i', @recipients);
1367        my $raw_from = $sender;
1368        if (defined $envelope_sender && $envelope_sender ne "auto") {
1369                $raw_from = $envelope_sender;
1370        }
1371        $raw_from = extract_valid_address($raw_from);
1372        unshift (@sendmail_parameters,
1373                        '-f', $raw_from) if(defined $envelope_sender);
1374
1375        if ($needs_confirm && !$dry_run) {
1376                print "\n$header\n";
1377                if ($needs_confirm eq "inform") {
1378                        $confirm_unconfigured = 0; # squelch this message for the rest of this run
1379                        $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
1380                        print __ <<EOF ;
1381    The Cc list above has been expanded by additional
1382    addresses found in the patch commit message. By default
1383    send-email prompts before sending whenever this occurs.
1384    This behavior is controlled by the sendemail.confirm
1385    configuration setting.
1386
1387    For additional information, run 'git send-email --help'.
1388    To retain the current behavior, but squelch this message,
1389    run 'git config --global sendemail.confirm auto'.
1390
1391EOF
1392                }
1393                # TRANSLATORS: Make sure to include [y] [n] [q] [a] in your
1394                # translation. The program will only accept English input
1395                # at this point.
1396                $_ = ask(__("Send this email? ([y]es|[n]o|[q]uit|[a]ll): "),
1397                         valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
1398                         default => $ask_default);
1399                die __("Send this email reply required") unless defined $_;
1400                if (/^n/i) {
1401                        return 0;
1402                } elsif (/^q/i) {
1403                        cleanup_compose_files();
1404                        exit(0);
1405                } elsif (/^a/i) {
1406                        $confirm = 'never';
1407                }
1408        }
1409
1410        unshift (@sendmail_parameters, @smtp_server_options);
1411
1412        if ($dry_run) {
1413                # We don't want to send the email.
1414        } elsif (file_name_is_absolute($smtp_server)) {
1415                my $pid = open my $sm, '|-';
1416                defined $pid or die $!;
1417                if (!$pid) {
1418                        exec($smtp_server, @sendmail_parameters) or die $!;
1419                }
1420                print $sm "$header\n$message";
1421                close $sm or die $!;
1422        } else {
1423
1424                if (!defined $smtp_server) {
1425                        die __("The required SMTP server is not properly defined.")
1426                }
1427
1428                require Net::SMTP;
1429                my $use_net_smtp_ssl = version->parse($Net::SMTP::VERSION) < version->parse("2.34");
1430                $smtp_domain ||= maildomain();
1431
1432                if ($smtp_encryption eq 'ssl') {
1433                        $smtp_server_port ||= 465; # ssmtp
1434                        require IO::Socket::SSL;
1435
1436                        # Suppress "variable accessed once" warning.
1437                        {
1438                                no warnings 'once';
1439                                $IO::Socket::SSL::DEBUG = 1;
1440                        }
1441
1442                        # Net::SMTP::SSL->new() does not forward any SSL options
1443                        IO::Socket::SSL::set_client_defaults(
1444                                ssl_verify_params());
1445
1446                        if ($use_net_smtp_ssl) {
1447                                require Net::SMTP::SSL;
1448                                $smtp ||= Net::SMTP::SSL->new($smtp_server,
1449                                                              Hello => $smtp_domain,
1450                                                              Port => $smtp_server_port,
1451                                                              Debug => $debug_net_smtp);
1452                        }
1453                        else {
1454                                $smtp ||= Net::SMTP->new($smtp_server,
1455                                                         Hello => $smtp_domain,
1456                                                         Port => $smtp_server_port,
1457                                                         Debug => $debug_net_smtp,
1458                                                         SSL => 1);
1459                        }
1460                }
1461                else {
1462                        $smtp_server_port ||= 25;
1463                        $smtp ||= Net::SMTP->new($smtp_server,
1464                                                 Hello => $smtp_domain,
1465                                                 Debug => $debug_net_smtp,
1466                                                 Port => $smtp_server_port);
1467                        if ($smtp_encryption eq 'tls' && $smtp) {
1468                                if ($use_net_smtp_ssl) {
1469                                        $smtp->command('STARTTLS');
1470                                        $smtp->response();
1471                                        if ($smtp->code != 220) {
1472                                                die sprintf(__("Server does not support STARTTLS! %s"), $smtp->message);
1473                                        }
1474                                        require Net::SMTP::SSL;
1475                                        $smtp = Net::SMTP::SSL->start_SSL($smtp,
1476                                                                          ssl_verify_params())
1477                                                or die sprintf(__("STARTTLS failed! %s"), IO::Socket::SSL::errstr());
1478                                }
1479                                else {
1480                                        $smtp->starttls(ssl_verify_params())
1481                                                or die sprintf(__("STARTTLS failed! %s"), IO::Socket::SSL::errstr());
1482                                }
1483                                $smtp_encryption = '';
1484                                # Send EHLO again to receive fresh
1485                                # supported commands
1486                                $smtp->hello($smtp_domain);
1487                        }
1488                }
1489
1490                if (!$smtp) {
1491                        die __("Unable to initialize SMTP properly. Check config and use --smtp-debug."),
1492                            " VALUES: server=$smtp_server ",
1493                            "encryption=$smtp_encryption ",
1494                            "hello=$smtp_domain",
1495                            defined $smtp_server_port ? " port=$smtp_server_port" : "";
1496                }
1497
1498                smtp_auth_maybe or die $smtp->message;
1499
1500                $smtp->mail( $raw_from ) or die $smtp->message;
1501                $smtp->to( @recipients ) or die $smtp->message;
1502                $smtp->data or die $smtp->message;
1503                $smtp->datasend("$header\n") or die $smtp->message;
1504                my @lines = split /^/, $message;
1505                foreach my $line (@lines) {
1506                        $smtp->datasend("$line") or die $smtp->message;
1507                }
1508                $smtp->dataend() or die $smtp->message;
1509                $smtp->code =~ /250|200/ or die sprintf(__("Failed to send %s\n"), $subject).$smtp->message;
1510        }
1511        if ($quiet) {
1512                printf($dry_run ? __("Dry-Sent %s\n") : __("Sent %s\n"), $subject);
1513        } else {
1514                print($dry_run ? __("Dry-OK. Log says:\n") : __("OK. Log says:\n"));
1515                if (!file_name_is_absolute($smtp_server)) {
1516                        print "Server: $smtp_server\n";
1517                        print "MAIL FROM:<$raw_from>\n";
1518                        foreach my $entry (@recipients) {
1519                            print "RCPT TO:<$entry>\n";
1520                        }
1521                } else {
1522                        print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
1523                }
1524                print $header, "\n";
1525                if ($smtp) {
1526                        print __("Result: "), $smtp->code, ' ',
1527                                ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
1528                } else {
1529                        print __("Result: OK\n");
1530                }
1531        }
1532
1533        return 1;
1534}
1535
1536$reply_to = $initial_reply_to;
1537$references = $initial_reply_to || '';
1538$subject = $initial_subject;
1539$message_num = 0;
1540
1541foreach my $t (@files) {
1542        open my $fh, "<", $t or die sprintf(__("can't open file %s"), $t);
1543
1544        my $author = undef;
1545        my $sauthor = undef;
1546        my $author_encoding;
1547        my $has_content_type;
1548        my $body_encoding;
1549        my $xfer_encoding;
1550        my $has_mime_version;
1551        @to = ();
1552        @cc = ();
1553        @xh = ();
1554        my $input_format = undef;
1555        my @header = ();
1556        $message = "";
1557        $message_num++;
1558        # First unfold multiline header fields
1559        while(<$fh>) {
1560                last if /^\s*$/;
1561                if (/^\s+\S/ and @header) {
1562                        chomp($header[$#header]);
1563                        s/^\s+/ /;
1564                        $header[$#header] .= $_;
1565            } else {
1566                        push(@header, $_);
1567                }
1568        }
1569        # Now parse the header
1570        foreach(@header) {
1571                if (/^From /) {
1572                        $input_format = 'mbox';
1573                        next;
1574                }
1575                chomp;
1576                if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1577                        $input_format = 'mbox';
1578                }
1579
1580                if (defined $input_format && $input_format eq 'mbox') {
1581                        if (/^Subject:\s+(.*)$/i) {
1582                                $subject = $1;
1583                        }
1584                        elsif (/^From:\s+(.*)$/i) {
1585                                ($author, $author_encoding) = unquote_rfc2047($1);
1586                                $sauthor = sanitize_address($author);
1587                                next if $suppress_cc{'author'};
1588                                next if $suppress_cc{'self'} and $sauthor eq $sender;
1589                                printf(__("(mbox) Adding cc: %s from line '%s'\n"),
1590                                        $1, $_) unless $quiet;
1591                                push @cc, $1;
1592                        }
1593                        elsif (/^To:\s+(.*)$/i) {
1594                                foreach my $addr (parse_address_line($1)) {
1595                                        printf(__("(mbox) Adding to: %s from line '%s'\n"),
1596                                                $addr, $_) unless $quiet;
1597                                        push @to, $addr;
1598                                }
1599                        }
1600                        elsif (/^Cc:\s+(.*)$/i) {
1601                                foreach my $addr (parse_address_line($1)) {
1602                                        my $qaddr = unquote_rfc2047($addr);
1603                                        my $saddr = sanitize_address($qaddr);
1604                                        if ($saddr eq $sender) {
1605                                                next if ($suppress_cc{'self'});
1606                                        } else {
1607                                                next if ($suppress_cc{'cc'});
1608                                        }
1609                                        printf(__("(mbox) Adding cc: %s from line '%s'\n"),
1610                                                $addr, $_) unless $quiet;
1611                                        push @cc, $addr;
1612                                }
1613                        }
1614                        elsif (/^Content-type:/i) {
1615                                $has_content_type = 1;
1616                                if (/charset="?([^ "]+)/) {
1617                                        $body_encoding = $1;
1618                                }
1619                                push @xh, $_;
1620                        }
1621                        elsif (/^MIME-Version/i) {
1622                                $has_mime_version = 1;
1623                                push @xh, $_;
1624                        }
1625                        elsif (/^Message-Id: (.*)/i) {
1626                                $message_id = $1;
1627                        }
1628                        elsif (/^Content-Transfer-Encoding: (.*)/i) {
1629                                $xfer_encoding = $1 if not defined $xfer_encoding;
1630                        }
1631                        elsif (!/^Date:\s/i && /^[-A-Za-z]+:\s+\S/) {
1632                                push @xh, $_;
1633                        }
1634
1635                } else {
1636                        # In the traditional
1637                        # "send lots of email" format,
1638                        # line 1 = cc
1639                        # line 2 = subject
1640                        # So let's support that, too.
1641                        $input_format = 'lots';
1642                        if (@cc == 0 && !$suppress_cc{'cc'}) {
1643                                printf(__("(non-mbox) Adding cc: %s from line '%s'\n"),
1644                                        $_, $_) unless $quiet;
1645                                push @cc, $_;
1646                        } elsif (!defined $subject) {
1647                                $subject = $_;
1648                        }
1649                }
1650        }
1651        # Now parse the message body
1652        while(<$fh>) {
1653                $message .=  $_;
1654                if (/^(Signed-off-by|Cc): (.*)/i) {
1655                        chomp;
1656                        my ($what, $c) = ($1, $2);
1657                        # strip garbage for the address we'll use:
1658                        $c = strip_garbage_one_address($c);
1659                        # sanitize a bit more to decide whether to suppress the address:
1660                        my $sc = sanitize_address($c);
1661                        if ($sc eq $sender) {
1662                                next if ($suppress_cc{'self'});
1663                        } else {
1664                                next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1665                                next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1666                        }
1667                        push @cc, $c;
1668                        printf(__("(body) Adding cc: %s from line '%s'\n"),
1669                                $c, $_) unless $quiet;
1670                }
1671        }
1672        close $fh;
1673
1674        push @to, recipients_cmd("to-cmd", "to", $to_cmd, $t)
1675                if defined $to_cmd;
1676        push @cc, recipients_cmd("cc-cmd", "cc", $cc_cmd, $t)
1677                if defined $cc_cmd && !$suppress_cc{'cccmd'};
1678
1679        if ($broken_encoding{$t} && !$has_content_type) {
1680                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1681                $has_content_type = 1;
1682                push @xh, "Content-Type: text/plain; charset=$auto_8bit_encoding";
1683                $body_encoding = $auto_8bit_encoding;
1684        }
1685
1686        if ($broken_encoding{$t} && !is_rfc2047_quoted($subject)) {
1687                $subject = quote_subject($subject, $auto_8bit_encoding);
1688        }
1689
1690        if (defined $sauthor and $sauthor ne $sender) {
1691                $message = "From: $author\n\n$message";
1692                if (defined $author_encoding) {
1693                        if ($has_content_type) {
1694                                if ($body_encoding eq $author_encoding) {
1695                                        # ok, we already have the right encoding
1696                                }
1697                                else {
1698                                        # uh oh, we should re-encode
1699                                }
1700                        }
1701                        else {
1702                                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1703                                $has_content_type = 1;
1704                                push @xh,
1705                                  "Content-Type: text/plain; charset=$author_encoding";
1706                        }
1707                }
1708        }
1709        if (defined $target_xfer_encoding) {
1710                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1711                $message = apply_transfer_encoding(
1712                        $message, $xfer_encoding, $target_xfer_encoding);
1713                $xfer_encoding = $target_xfer_encoding;
1714        }
1715        if (defined $xfer_encoding) {
1716                push @xh, "Content-Transfer-Encoding: $xfer_encoding";
1717        }
1718        if (defined $xfer_encoding or $has_content_type) {
1719                unshift @xh, 'MIME-Version: 1.0' unless $has_mime_version;
1720        }
1721
1722        $needs_confirm = (
1723                $confirm eq "always" or
1724                ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1725                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1726        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1727
1728        @to = process_address_list(@to);
1729        @cc = process_address_list(@cc);
1730
1731        @to = (@initial_to, @to);
1732        @cc = (@initial_cc, @cc);
1733
1734        if ($message_num == 1) {
1735                if (defined $cover_cc and $cover_cc) {
1736                        @initial_cc = @cc;
1737                }
1738                if (defined $cover_to and $cover_to) {
1739                        @initial_to = @to;
1740                }
1741        }
1742
1743        my $message_was_sent = send_message();
1744
1745        # set up for the next message
1746        if ($thread && $message_was_sent &&
1747                ($chain_reply_to || !defined $reply_to || length($reply_to) == 0 ||
1748                $message_num == 1)) {
1749                $reply_to = $message_id;
1750                if (length $references > 0) {
1751                        $references .= "\n $message_id";
1752                } else {
1753                        $references = "$message_id";
1754                }
1755        }
1756        $message_id = undef;
1757        $num_sent++;
1758        if (defined $batch_size && $num_sent == $batch_size) {
1759                $num_sent = 0;
1760                $smtp->quit if defined $smtp;
1761                undef $smtp;
1762                undef $auth;
1763                sleep($relogin_delay) if defined $relogin_delay;
1764        }
1765}
1766
1767# Execute a command (e.g. $to_cmd) to get a list of email addresses
1768# and return a results array
1769sub recipients_cmd {
1770        my ($prefix, $what, $cmd, $file) = @_;
1771
1772        my @addresses = ();
1773        open my $fh, "-|", "$cmd \Q$file\E"
1774            or die sprintf(__("(%s) Could not execute '%s'"), $prefix, $cmd);
1775        while (my $address = <$fh>) {
1776                $address =~ s/^\s*//g;
1777                $address =~ s/\s*$//g;
1778                $address = sanitize_address($address);
1779                next if ($address eq $sender and $suppress_cc{'self'});
1780                push @addresses, $address;
1781                printf(__("(%s) Adding %s: %s from: '%s'\n"),
1782                       $prefix, $what, $address, $cmd) unless $quiet;
1783                }
1784        close $fh
1785            or die sprintf(__("(%s) failed to close pipe to '%s'"), $prefix, $cmd);
1786        return @addresses;
1787}
1788
1789cleanup_compose_files();
1790
1791sub cleanup_compose_files {
1792        unlink($compose_filename, $compose_filename . ".final") if $compose;
1793}
1794
1795$smtp->quit if $smtp;
1796
1797sub apply_transfer_encoding {
1798        my $message = shift;
1799        my $from = shift;
1800        my $to = shift;
1801
1802        return $message if ($from eq $to and $from ne '7bit');
1803
1804        require MIME::QuotedPrint;
1805        require MIME::Base64;
1806
1807        $message = MIME::QuotedPrint::decode($message)
1808                if ($from eq 'quoted-printable');
1809        $message = MIME::Base64::decode($message)
1810                if ($from eq 'base64');
1811
1812        die __("cannot send message as 7bit")
1813                if ($to eq '7bit' and $message =~ /[^[:ascii:]]/);
1814        return $message
1815                if ($to eq '7bit' or $to eq '8bit');
1816        return MIME::QuotedPrint::encode($message, "\n", 0)
1817                if ($to eq 'quoted-printable');
1818        return MIME::Base64::encode($message, "\n")
1819                if ($to eq 'base64');
1820        die __("invalid transfer encoding");
1821}
1822
1823sub unique_email_list {
1824        my %seen;
1825        my @emails;
1826
1827        foreach my $entry (@_) {
1828                my $clean = extract_valid_address_or_die($entry);
1829                $seen{$clean} ||= 0;
1830                next if $seen{$clean}++;
1831                push @emails, $entry;
1832        }
1833        return @emails;
1834}
1835
1836sub validate_patch {
1837        my $fn = shift;
1838
1839        if ($repo) {
1840                my $validate_hook = catfile(catdir($repo->repo_path(), 'hooks'),
1841                                            'sendemail-validate');
1842                my $hook_error;
1843                if (-x $validate_hook) {
1844                        my $target = abs_path($fn);
1845                        # The hook needs a correct cwd and GIT_DIR.
1846                        my $cwd_save = cwd();
1847                        chdir($repo->wc_path() or $repo->repo_path())
1848                                or die("chdir: $!");
1849                        local $ENV{"GIT_DIR"} = $repo->repo_path();
1850                        $hook_error = "rejected by sendemail-validate hook"
1851                                if system($validate_hook, $target);
1852                        chdir($cwd_save) or die("chdir: $!");
1853                }
1854                return $hook_error if $hook_error;
1855        }
1856
1857        open(my $fh, '<', $fn)
1858                or die sprintf(__("unable to open %s: %s\n"), $fn, $!);
1859        while (my $line = <$fh>) {
1860                if (length($line) > 998) {
1861                        return sprintf(__("%s: patch contains a line longer than 998 characters"), $.);
1862                }
1863        }
1864        return;
1865}
1866
1867sub handle_backup {
1868        my ($last, $lastlen, $file, $known_suffix) = @_;
1869        my ($suffix, $skip);
1870
1871        $skip = 0;
1872        if (defined $last &&
1873            ($lastlen < length($file)) &&
1874            (substr($file, 0, $lastlen) eq $last) &&
1875            ($suffix = substr($file, $lastlen)) !~ /^[a-z0-9]/i) {
1876                if (defined $known_suffix && $suffix eq $known_suffix) {
1877                        printf(__("Skipping %s with backup suffix '%s'.\n"), $file, $known_suffix);
1878                        $skip = 1;
1879                } else {
1880                        # TRANSLATORS: please keep "[y|N]" as is.
1881                        my $answer = ask(sprintf(__("Do you really want to send %s? [y|N]: "), $file),
1882                                         valid_re => qr/^(?:y|n)/i,
1883                                         default => 'n');
1884                        $skip = ($answer ne 'y');
1885                        if ($skip) {
1886                                $known_suffix = $suffix;
1887                        }
1888                }
1889        }
1890        return ($skip, $known_suffix);
1891}
1892
1893sub handle_backup_files {
1894        my @file = @_;
1895        my ($last, $lastlen, $known_suffix, $skip, @result);
1896        for my $file (@file) {
1897                ($skip, $known_suffix) = handle_backup($last, $lastlen,
1898                                                       $file, $known_suffix);
1899                push @result, $file unless $skip;
1900                $last = $file;
1901                $lastlen = length($file);
1902        }
1903        return @result;
1904}
1905
1906sub file_has_nonascii {
1907        my $fn = shift;
1908        open(my $fh, '<', $fn)
1909                or die sprintf(__("unable to open %s: %s\n"), $fn, $!);
1910        while (my $line = <$fh>) {
1911                return 1 if $line =~ /[^[:ascii:]]/;
1912        }
1913        return 0;
1914}
1915
1916sub body_or_subject_has_nonascii {
1917        my $fn = shift;
1918        open(my $fh, '<', $fn)
1919                or die sprintf(__("unable to open %s: %s\n"), $fn, $!);
1920        while (my $line = <$fh>) {
1921                last if $line =~ /^$/;
1922                return 1 if $line =~ /^Subject.*[^[:ascii:]]/;
1923        }
1924        while (my $line = <$fh>) {
1925                return 1 if $line =~ /[^[:ascii:]]/;
1926        }
1927        return 0;
1928}