git-send-email.perlon commit Merge branch 'bn/config-doc-tt-varnames' into maint (57b76d3)
   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(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 >
  49git send-email --dump-aliases
  50
  51  Composing:
  52    --from                  <str>  * Email From:
  53    --[no-]to               <str>  * Email To:
  54    --[no-]cc               <str>  * Email Cc:
  55    --[no-]bcc              <str>  * Email Bcc:
  56    --subject               <str>  * Email "Subject:"
  57    --in-reply-to           <str>  * Email "In-Reply-To:"
  58    --[no-]xmailer                 * Add "X-Mailer:" header (default).
  59    --[no-]annotate                * Review each patch that will be sent in an editor.
  60    --compose                      * Open an editor for introduction.
  61    --compose-encoding      <str>  * Encoding to assume for introduction.
  62    --8bit-encoding         <str>  * Encoding to assume 8bit mails if undeclared
  63    --transfer-encoding     <str>  * Transfer encoding to use (quoted-printable, 8bit, base64)
  64
  65  Sending:
  66    --envelope-sender       <str>  * Email envelope sender.
  67    --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
  68                                     is optional. Default 'localhost'.
  69    --smtp-server-option    <str>  * Outgoing SMTP server option to use.
  70    --smtp-server-port      <int>  * Outgoing SMTP server port.
  71    --smtp-user             <str>  * Username for SMTP-AUTH.
  72    --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
  73    --smtp-encryption       <str>  * tls or ssl; anything else disables.
  74    --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
  75    --smtp-ssl-cert-path    <str>  * Path to ca-certificates (either directory or file).
  76                                     Pass an empty string to disable certificate
  77                                     verification.
  78    --smtp-domain           <str>  * The domain name sent to HELO/EHLO handshake
  79    --smtp-auth             <str>  * Space-separated list of allowed AUTH mechanisms.
  80                                     This setting forces to use one of the listed mechanisms.
  81    --smtp-debug            <0|1>  * Disable, enable Net::SMTP debug.
  82
  83  Automating:
  84    --identity              <str>  * Use the sendemail.<id> options.
  85    --to-cmd                <str>  * Email To: via `<str> \$patch_path`
  86    --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
  87    --suppress-cc           <str>  * author, self, sob, cc, cccmd, body, bodycc, all.
  88    --[no-]cc-cover                * Email Cc: addresses in the cover letter.
  89    --[no-]to-cover                * Email To: addresses in the cover letter.
  90    --[no-]signed-off-by-cc        * Send to Signed-off-by: addresses. Default on.
  91    --[no-]suppress-from           * Send to self. Default off.
  92    --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default off.
  93    --[no-]thread                  * Use In-Reply-To: field. Default on.
  94
  95  Administering:
  96    --confirm               <str>  * Confirm recipients before sending;
  97                                     auto, cc, compose, always, or never.
  98    --quiet                        * Output one line of info per email.
  99    --dry-run                      * Don't actually send the emails.
 100    --[no-]validate                * Perform patch sanity checks. Default on.
 101    --[no-]format-patch            * understand any non optional arguments as
 102                                     `git format-patch` ones.
 103    --force                        * Send even if safety checks would prevent it.
 104
 105  Information:
 106    --dump-aliases                 * Dump configured aliases and exit.
 107
 108EOT
 109        exit(1);
 110}
 111
 112# most mail servers generate the Date: header, but not all...
 113sub format_2822_time {
 114        my ($time) = @_;
 115        my @localtm = localtime($time);
 116        my @gmttm = gmtime($time);
 117        my $localmin = $localtm[1] + $localtm[2] * 60;
 118        my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
 119        if ($localtm[0] != $gmttm[0]) {
 120                die "local zone differs from GMT by a non-minute interval\n";
 121        }
 122        if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
 123                $localmin += 1440;
 124        } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 125                $localmin -= 1440;
 126        } elsif ($gmttm[6] != $localtm[6]) {
 127                die "local time offset greater than or equal to 24 hours\n";
 128        }
 129        my $offset = $localmin - $gmtmin;
 130        my $offhour = $offset / 60;
 131        my $offmin = abs($offset % 60);
 132        if (abs($offhour) >= 24) {
 133                die ("local time offset greater than or equal to 24 hours\n");
 134        }
 135
 136        return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 137                       qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 138                       $localtm[3],
 139                       qw(Jan Feb Mar Apr May Jun
 140                          Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 141                       $localtm[5]+1900,
 142                       $localtm[2],
 143                       $localtm[1],
 144                       $localtm[0],
 145                       ($offset >= 0) ? '+' : '-',
 146                       abs($offhour),
 147                       $offmin,
 148                       );
 149}
 150
 151my $have_email_valid = eval { require Email::Valid; 1 };
 152my $have_mail_address = eval { require Mail::Address; 1 };
 153my $smtp;
 154my $auth;
 155
 156# Regexes for RFC 2047 productions.
 157my $re_token = qr/[^][()<>@,;:\\"\/?.= \000-\037\177-\377]+/;
 158my $re_encoded_text = qr/[^? \000-\037\177-\377]+/;
 159my $re_encoded_word = qr/=\?($re_token)\?($re_token)\?($re_encoded_text)\?=/;
 160
 161# Variables we fill in automatically, or via prompting:
 162my (@to,$no_to,@initial_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
 163        $initial_reply_to,$initial_subject,@files,
 164        $author,$sender,$smtp_authpass,$annotate,$use_xmailer,$compose,$time);
 165
 166my $envelope_sender;
 167
 168# Example reply to:
 169#$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 170
 171my $repo = eval { Git->repository() };
 172my @repo = $repo ? ($repo) : ();
 173my $term = eval {
 174        $ENV{"GIT_SEND_EMAIL_NOTTY"}
 175                ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
 176                : new Term::ReadLine 'git-send-email';
 177};
 178if ($@) {
 179        $term = new FakeTerm "$@: going non-interactive";
 180}
 181
 182# Behavior modification variables
 183my ($quiet, $dry_run) = (0, 0);
 184my $format_patch;
 185my $compose_filename;
 186my $force = 0;
 187my $dump_aliases = 0;
 188
 189# Handle interactive edition of files.
 190my $multiedit;
 191my $editor;
 192
 193sub do_edit {
 194        if (!defined($editor)) {
 195                $editor = Git::command_oneline('var', 'GIT_EDITOR');
 196        }
 197        if (defined($multiedit) && !$multiedit) {
 198                map {
 199                        system('sh', '-c', $editor.' "$@"', $editor, $_);
 200                        if (($? & 127) || ($? >> 8)) {
 201                                die("the editor exited uncleanly, aborting everything");
 202                        }
 203                } @_;
 204        } else {
 205                system('sh', '-c', $editor.' "$@"', $editor, @_);
 206                if (($? & 127) || ($? >> 8)) {
 207                        die("the editor exited uncleanly, aborting everything");
 208                }
 209        }
 210}
 211
 212# Variables with corresponding config settings
 213my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc);
 214my ($cover_cc, $cover_to);
 215my ($to_cmd, $cc_cmd);
 216my ($smtp_server, $smtp_server_port, @smtp_server_options);
 217my ($smtp_authuser, $smtp_encryption, $smtp_ssl_cert_path);
 218my ($identity, $aliasfiletype, @alias_files, $smtp_domain, $smtp_auth);
 219my ($validate, $confirm);
 220my (@suppress_cc);
 221my ($auto_8bit_encoding);
 222my ($compose_encoding);
 223my ($target_xfer_encoding);
 224
 225my ($debug_net_smtp) = 0;               # Net::SMTP, see send_message()
 226
 227my %config_bool_settings = (
 228    "thread" => [\$thread, 1],
 229    "chainreplyto" => [\$chain_reply_to, 0],
 230    "suppressfrom" => [\$suppress_from, undef],
 231    "signedoffbycc" => [\$signed_off_by_cc, undef],
 232    "cccover" => [\$cover_cc, undef],
 233    "tocover" => [\$cover_to, undef],
 234    "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 235    "validate" => [\$validate, 1],
 236    "multiedit" => [\$multiedit, undef],
 237    "annotate" => [\$annotate, undef],
 238    "xmailer" => [\$use_xmailer, 1]
 239);
 240
 241my %config_settings = (
 242    "smtpserver" => \$smtp_server,
 243    "smtpserverport" => \$smtp_server_port,
 244    "smtpserveroption" => \@smtp_server_options,
 245    "smtpuser" => \$smtp_authuser,
 246    "smtppass" => \$smtp_authpass,
 247    "smtpdomain" => \$smtp_domain,
 248    "smtpauth" => \$smtp_auth,
 249    "to" => \@initial_to,
 250    "tocmd" => \$to_cmd,
 251    "cc" => \@initial_cc,
 252    "cccmd" => \$cc_cmd,
 253    "aliasfiletype" => \$aliasfiletype,
 254    "bcc" => \@bcclist,
 255    "suppresscc" => \@suppress_cc,
 256    "envelopesender" => \$envelope_sender,
 257    "confirm"   => \$confirm,
 258    "from" => \$sender,
 259    "assume8bitencoding" => \$auto_8bit_encoding,
 260    "composeencoding" => \$compose_encoding,
 261    "transferencoding" => \$target_xfer_encoding,
 262);
 263
 264my %config_path_settings = (
 265    "aliasesfile" => \@alias_files,
 266    "smtpsslcertpath" => \$smtp_ssl_cert_path,
 267);
 268
 269# Handle Uncouth Termination
 270sub signal_handler {
 271
 272        # Make text normal
 273        print color("reset"), "\n";
 274
 275        # SMTP password masked
 276        system "stty echo";
 277
 278        # tmp files from --compose
 279        if (defined $compose_filename) {
 280                if (-e $compose_filename) {
 281                        print "'$compose_filename' contains an intermediate version of the email you were composing.\n";
 282                }
 283                if (-e ($compose_filename . ".final")) {
 284                        print "'$compose_filename.final' contains the composed email.\n"
 285                }
 286        }
 287
 288        exit;
 289};
 290
 291$SIG{TERM} = \&signal_handler;
 292$SIG{INT}  = \&signal_handler;
 293
 294# Begin by accumulating all the variables (defined above), that we will end up
 295# needing, first, from the command line:
 296
 297my $help;
 298my $rc = GetOptions("h" => \$help,
 299                    "dump-aliases" => \$dump_aliases);
 300usage() unless $rc;
 301die "--dump-aliases incompatible with other options\n"
 302    if !$help and $dump_aliases and @ARGV;
 303$rc = GetOptions(
 304                    "sender|from=s" => \$sender,
 305                    "in-reply-to=s" => \$initial_reply_to,
 306                    "subject=s" => \$initial_subject,
 307                    "to=s" => \@initial_to,
 308                    "to-cmd=s" => \$to_cmd,
 309                    "no-to" => \$no_to,
 310                    "cc=s" => \@initial_cc,
 311                    "no-cc" => \$no_cc,
 312                    "bcc=s" => \@bcclist,
 313                    "no-bcc" => \$no_bcc,
 314                    "chain-reply-to!" => \$chain_reply_to,
 315                    "no-chain-reply-to" => sub {$chain_reply_to = 0},
 316                    "smtp-server=s" => \$smtp_server,
 317                    "smtp-server-option=s" => \@smtp_server_options,
 318                    "smtp-server-port=s" => \$smtp_server_port,
 319                    "smtp-user=s" => \$smtp_authuser,
 320                    "smtp-pass:s" => \$smtp_authpass,
 321                    "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 322                    "smtp-encryption=s" => \$smtp_encryption,
 323                    "smtp-ssl-cert-path=s" => \$smtp_ssl_cert_path,
 324                    "smtp-debug:i" => \$debug_net_smtp,
 325                    "smtp-domain:s" => \$smtp_domain,
 326                    "smtp-auth=s" => \$smtp_auth,
 327                    "identity=s" => \$identity,
 328                    "annotate!" => \$annotate,
 329                    "no-annotate" => sub {$annotate = 0},
 330                    "compose" => \$compose,
 331                    "quiet" => \$quiet,
 332                    "cc-cmd=s" => \$cc_cmd,
 333                    "suppress-from!" => \$suppress_from,
 334                    "no-suppress-from" => sub {$suppress_from = 0},
 335                    "suppress-cc=s" => \@suppress_cc,
 336                    "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 337                    "no-signed-off-cc|no-signed-off-by-cc" => sub {$signed_off_by_cc = 0},
 338                    "cc-cover|cc-cover!" => \$cover_cc,
 339                    "no-cc-cover" => sub {$cover_cc = 0},
 340                    "to-cover|to-cover!" => \$cover_to,
 341                    "no-to-cover" => sub {$cover_to = 0},
 342                    "confirm=s" => \$confirm,
 343                    "dry-run" => \$dry_run,
 344                    "envelope-sender=s" => \$envelope_sender,
 345                    "thread!" => \$thread,
 346                    "no-thread" => sub {$thread = 0},
 347                    "validate!" => \$validate,
 348                    "no-validate" => sub {$validate = 0},
 349                    "transfer-encoding=s" => \$target_xfer_encoding,
 350                    "format-patch!" => \$format_patch,
 351                    "no-format-patch" => sub {$format_patch = 0},
 352                    "8bit-encoding=s" => \$auto_8bit_encoding,
 353                    "compose-encoding=s" => \$compose_encoding,
 354                    "force" => \$force,
 355                    "xmailer!" => \$use_xmailer,
 356                    "no-xmailer" => sub {$use_xmailer = 0},
 357         );
 358
 359usage() if $help;
 360unless ($rc) {
 361    usage();
 362}
 363
 364die "Cannot run git format-patch from outside a repository\n"
 365        if $format_patch and not $repo;
 366
 367# Now, let's fill any that aren't set in with defaults:
 368
 369sub read_config {
 370        my ($prefix) = @_;
 371
 372        foreach my $setting (keys %config_bool_settings) {
 373                my $target = $config_bool_settings{$setting}->[0];
 374                $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 375        }
 376
 377        foreach my $setting (keys %config_path_settings) {
 378                my $target = $config_path_settings{$setting};
 379                if (ref($target) eq "ARRAY") {
 380                        unless (@$target) {
 381                                my @values = Git::config_path(@repo, "$prefix.$setting");
 382                                @$target = @values if (@values && defined $values[0]);
 383                        }
 384                }
 385                else {
 386                        $$target = Git::config_path(@repo, "$prefix.$setting") unless (defined $$target);
 387                }
 388        }
 389
 390        foreach my $setting (keys %config_settings) {
 391                my $target = $config_settings{$setting};
 392                next if $setting eq "to" and defined $no_to;
 393                next if $setting eq "cc" and defined $no_cc;
 394                next if $setting eq "bcc" and defined $no_bcc;
 395                if (ref($target) eq "ARRAY") {
 396                        unless (@$target) {
 397                                my @values = Git::config(@repo, "$prefix.$setting");
 398                                @$target = @values if (@values && defined $values[0]);
 399                        }
 400                }
 401                else {
 402                        $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 403                }
 404        }
 405
 406        if (!defined $smtp_encryption) {
 407                my $enc = Git::config(@repo, "$prefix.smtpencryption");
 408                if (defined $enc) {
 409                        $smtp_encryption = $enc;
 410                } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 411                        $smtp_encryption = 'ssl';
 412                }
 413        }
 414}
 415
 416# read configuration from [sendemail "$identity"], fall back on [sendemail]
 417$identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 418read_config("sendemail.$identity") if (defined $identity);
 419read_config("sendemail");
 420
 421# fall back on builtin bool defaults
 422foreach my $setting (values %config_bool_settings) {
 423        ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 424}
 425
 426# 'default' encryption is none -- this only prevents a warning
 427$smtp_encryption = '' unless (defined $smtp_encryption);
 428
 429# Set CC suppressions
 430my(%suppress_cc);
 431if (@suppress_cc) {
 432        foreach my $entry (@suppress_cc) {
 433                die "Unknown --suppress-cc field: '$entry'\n"
 434                        unless $entry =~ /^(?:all|cccmd|cc|author|self|sob|body|bodycc)$/;
 435                $suppress_cc{$entry} = 1;
 436        }
 437}
 438
 439if ($suppress_cc{'all'}) {
 440        foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
 441                $suppress_cc{$entry} = 1;
 442        }
 443        delete $suppress_cc{'all'};
 444}
 445
 446# If explicit old-style ones are specified, they trump --suppress-cc.
 447$suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 448$suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 449
 450if ($suppress_cc{'body'}) {
 451        foreach my $entry (qw (sob bodycc)) {
 452                $suppress_cc{$entry} = 1;
 453        }
 454        delete $suppress_cc{'body'};
 455}
 456
 457# Set confirm's default value
 458my $confirm_unconfigured = !defined $confirm;
 459if ($confirm_unconfigured) {
 460        $confirm = scalar %suppress_cc ? 'compose' : 'auto';
 461};
 462die "Unknown --confirm setting: '$confirm'\n"
 463        unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
 464
 465# Debugging, print out the suppressions.
 466if (0) {
 467        print "suppressions:\n";
 468        foreach my $entry (keys %suppress_cc) {
 469                printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 470        }
 471}
 472
 473my ($repoauthor, $repocommitter);
 474($repoauthor) = Git::ident_person(@repo, 'author');
 475($repocommitter) = Git::ident_person(@repo, 'committer');
 476
 477sub parse_address_line {
 478        if ($have_mail_address) {
 479                return map { $_->format } Mail::Address->parse($_[0]);
 480        } else {
 481                return Git::parse_mailboxes($_[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                        my @addr = split_addrs($addr);
 529
 530                        # quotes may be escaped in the file,
 531                        # unescape them so we do not double-escape them later.
 532                        s/\\"/"/g foreach @addr;
 533                        $aliases{$alias} = \@addr
 534                }}},
 535        mailrc => sub { my $fh = shift; while (<$fh>) {
 536                if (/^alias\s+(\S+)\s+(.*?)\s*$/) {
 537                        # spaces delimit multiple addresses
 538                        $aliases{$1} = [ quotewords('\s+', 0, $2) ];
 539                }}},
 540        pine => sub { my $fh = shift; my $f='\t[^\t]*';
 541                for (my $x = ''; defined($x); $x = $_) {
 542                        chomp $x;
 543                        $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 544                        $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 545                        $aliases{$1} = [ split_addrs($2) ];
 546                }},
 547        elm => sub  { my $fh = shift;
 548                      while (<$fh>) {
 549                          if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
 550                              my ($alias, $addr) = ($1, $2);
 551                               $aliases{$alias} = [ split_addrs($addr) ];
 552                          }
 553                      } },
 554        sendmail => \&parse_sendmail_aliases,
 555        gnus => sub { my $fh = shift; while (<$fh>) {
 556                if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 557                        $aliases{$1} = [ $2 ];
 558                }}}
 559);
 560
 561if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 562        foreach my $file (@alias_files) {
 563                open my $fh, '<', $file or die "opening $file: $!\n";
 564                $parse_alias{$aliasfiletype}->($fh);
 565                close $fh;
 566        }
 567}
 568
 569if ($dump_aliases) {
 570    print "$_\n" for (sort keys %aliases);
 571    exit(0);
 572}
 573
 574# is_format_patch_arg($f) returns 0 if $f names a patch, or 1 if
 575# $f is a revision list specification to be passed to format-patch.
 576sub is_format_patch_arg {
 577        return unless $repo;
 578        my $f = shift;
 579        try {
 580                $repo->command('rev-parse', '--verify', '--quiet', $f);
 581                if (defined($format_patch)) {
 582                        return $format_patch;
 583                }
 584                die(<<EOF);
 585File '$f' exists but it could also be the range of commits
 586to produce patches for.  Please disambiguate by...
 587
 588    * Saying "./$f" if you mean a file; or
 589    * Giving --format-patch option if you mean a range.
 590EOF
 591        } catch Git::Error::Command with {
 592                # Not a valid revision.  Treat it as a filename.
 593                return 0;
 594        }
 595}
 596
 597# Now that all the defaults are set, process the rest of the command line
 598# arguments and collect up the files that need to be processed.
 599my @rev_list_opts;
 600while (defined(my $f = shift @ARGV)) {
 601        if ($f eq "--") {
 602                push @rev_list_opts, "--", @ARGV;
 603                @ARGV = ();
 604        } elsif (-d $f and !is_format_patch_arg($f)) {
 605                opendir my $dh, $f
 606                        or die "Failed to opendir $f: $!";
 607
 608                push @files, grep { -f $_ } map { catfile($f, $_) }
 609                                sort readdir $dh;
 610                closedir $dh;
 611        } elsif ((-f $f or -p $f) and !is_format_patch_arg($f)) {
 612                push @files, $f;
 613        } else {
 614                push @rev_list_opts, $f;
 615        }
 616}
 617
 618if (@rev_list_opts) {
 619        die "Cannot run git format-patch from outside a repository\n"
 620                unless $repo;
 621        push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 622}
 623
 624if ($validate) {
 625        foreach my $f (@files) {
 626                unless (-p $f) {
 627                        my $error = validate_patch($f);
 628                        $error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 629                }
 630        }
 631}
 632
 633if (@files) {
 634        unless ($quiet) {
 635                print $_,"\n" for (@files);
 636        }
 637} else {
 638        print STDERR "\nNo patch files specified!\n\n";
 639        usage();
 640}
 641
 642sub get_patch_subject {
 643        my $fn = shift;
 644        open (my $fh, '<', $fn);
 645        while (my $line = <$fh>) {
 646                next unless ($line =~ /^Subject: (.*)$/);
 647                close $fh;
 648                return "GIT: $1\n";
 649        }
 650        close $fh;
 651        die "No subject line in $fn ?";
 652}
 653
 654if ($compose) {
 655        # Note that this does not need to be secure, but we will make a small
 656        # effort to have it be unique
 657        $compose_filename = ($repo ?
 658                tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 659                tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 660        open my $c, ">", $compose_filename
 661                or die "Failed to open for writing $compose_filename: $!";
 662
 663
 664        my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 665        my $tpl_subject = $initial_subject || '';
 666        my $tpl_reply_to = $initial_reply_to || '';
 667
 668        print $c <<EOT;
 669From $tpl_sender # This line is ignored.
 670GIT: Lines beginning in "GIT:" will be removed.
 671GIT: Consider including an overall diffstat or table of contents
 672GIT: for the patch you are writing.
 673GIT:
 674GIT: Clear the body content if you don't wish to send a summary.
 675From: $tpl_sender
 676Subject: $tpl_subject
 677In-Reply-To: $tpl_reply_to
 678
 679EOT
 680        for my $f (@files) {
 681                print $c get_patch_subject($f);
 682        }
 683        close $c;
 684
 685        if ($annotate) {
 686                do_edit($compose_filename, @files);
 687        } else {
 688                do_edit($compose_filename);
 689        }
 690
 691        open my $c2, ">", $compose_filename . ".final"
 692                or die "Failed to open $compose_filename.final : " . $!;
 693
 694        open $c, "<", $compose_filename
 695                or die "Failed to open $compose_filename : " . $!;
 696
 697        my $need_8bit_cte = file_has_nonascii($compose_filename);
 698        my $in_body = 0;
 699        my $summary_empty = 1;
 700        if (!defined $compose_encoding) {
 701                $compose_encoding = "UTF-8";
 702        }
 703        while(<$c>) {
 704                next if m/^GIT:/;
 705                if ($in_body) {
 706                        $summary_empty = 0 unless (/^\n$/);
 707                } elsif (/^\n$/) {
 708                        $in_body = 1;
 709                        if ($need_8bit_cte) {
 710                                print $c2 "MIME-Version: 1.0\n",
 711                                         "Content-Type: text/plain; ",
 712                                           "charset=$compose_encoding\n",
 713                                         "Content-Transfer-Encoding: 8bit\n";
 714                        }
 715                } elsif (/^MIME-Version:/i) {
 716                        $need_8bit_cte = 0;
 717                } elsif (/^Subject:\s*(.+)\s*$/i) {
 718                        $initial_subject = $1;
 719                        my $subject = $initial_subject;
 720                        $_ = "Subject: " .
 721                                quote_subject($subject, $compose_encoding) .
 722                                "\n";
 723                } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 724                        $initial_reply_to = $1;
 725                        next;
 726                } elsif (/^From:\s*(.+)\s*$/i) {
 727                        $sender = $1;
 728                        next;
 729                } elsif (/^(?:To|Cc|Bcc):/i) {
 730                        print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n";
 731                        next;
 732                }
 733                print $c2 $_;
 734        }
 735        close $c;
 736        close $c2;
 737
 738        if ($summary_empty) {
 739                print "Summary email is empty, skipping it\n";
 740                $compose = -1;
 741        }
 742} elsif ($annotate) {
 743        do_edit(@files);
 744}
 745
 746sub ask {
 747        my ($prompt, %arg) = @_;
 748        my $valid_re = $arg{valid_re};
 749        my $default = $arg{default};
 750        my $confirm_only = $arg{confirm_only};
 751        my $resp;
 752        my $i = 0;
 753        return defined $default ? $default : undef
 754                unless defined $term->IN and defined fileno($term->IN) and
 755                       defined $term->OUT and defined fileno($term->OUT);
 756        while ($i++ < 10) {
 757                $resp = $term->readline($prompt);
 758                if (!defined $resp) { # EOF
 759                        print "\n";
 760                        return defined $default ? $default : undef;
 761                }
 762                if ($resp eq '' and defined $default) {
 763                        return $default;
 764                }
 765                if (!defined $valid_re or $resp =~ /$valid_re/) {
 766                        return $resp;
 767                }
 768                if ($confirm_only) {
 769                        my $yesno = $term->readline("Are you sure you want to use <$resp> [y/N]? ");
 770                        if (defined $yesno && $yesno =~ /y/i) {
 771                                return $resp;
 772                        }
 773                }
 774        }
 775        return;
 776}
 777
 778my %broken_encoding;
 779
 780sub file_declares_8bit_cte {
 781        my $fn = shift;
 782        open (my $fh, '<', $fn);
 783        while (my $line = <$fh>) {
 784                last if ($line =~ /^$/);
 785                return 1 if ($line =~ /^Content-Transfer-Encoding: .*8bit.*$/);
 786        }
 787        close $fh;
 788        return 0;
 789}
 790
 791foreach my $f (@files) {
 792        next unless (body_or_subject_has_nonascii($f)
 793                     && !file_declares_8bit_cte($f));
 794        $broken_encoding{$f} = 1;
 795}
 796
 797if (!defined $auto_8bit_encoding && scalar %broken_encoding) {
 798        print "The following files are 8bit, but do not declare " .
 799                "a Content-Transfer-Encoding.\n";
 800        foreach my $f (sort keys %broken_encoding) {
 801                print "    $f\n";
 802        }
 803        $auto_8bit_encoding = ask("Which 8bit encoding should I declare [UTF-8]? ",
 804                                  valid_re => qr/.{4}/, confirm_only => 1,
 805                                  default => "UTF-8");
 806}
 807
 808if (!$force) {
 809        for my $f (@files) {
 810                if (get_patch_subject($f) =~ /\Q*** SUBJECT HERE ***\E/) {
 811                        die "Refusing to send because the patch\n\t$f\n"
 812                                . "has the template subject '*** SUBJECT HERE ***'. "
 813                                . "Pass --force if you really want to send.\n";
 814                }
 815        }
 816}
 817
 818if (defined $sender) {
 819        $sender =~ s/^\s+|\s+$//g;
 820        ($sender) = expand_aliases($sender);
 821} else {
 822        $sender = $repoauthor || $repocommitter || '';
 823}
 824
 825# $sender could be an already sanitized address
 826# (e.g. sendemail.from could be manually sanitized by user).
 827# But it's a no-op to run sanitize_address on an already sanitized address.
 828$sender = sanitize_address($sender);
 829
 830my $to_whom = "To whom should the emails be sent (if anyone)?";
 831my $prompting = 0;
 832if (!@initial_to && !defined $to_cmd) {
 833        my $to = ask("$to_whom ",
 834                     default => "",
 835                     valid_re => qr/\@.*\./, confirm_only => 1);
 836        push @initial_to, parse_address_line($to) if defined $to; # sanitized/validated later
 837        $prompting++;
 838}
 839
 840sub expand_aliases {
 841        return map { expand_one_alias($_) } @_;
 842}
 843
 844my %EXPANDED_ALIASES;
 845sub expand_one_alias {
 846        my $alias = shift;
 847        if ($EXPANDED_ALIASES{$alias}) {
 848                die "fatal: alias '$alias' expands to itself\n";
 849        }
 850        local $EXPANDED_ALIASES{$alias} = 1;
 851        return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 852}
 853
 854@initial_to = process_address_list(@initial_to);
 855@initial_cc = process_address_list(@initial_cc);
 856@bcclist = process_address_list(@bcclist);
 857
 858if ($thread && !defined $initial_reply_to && $prompting) {
 859        $initial_reply_to = ask(
 860                "Message-ID to be used as In-Reply-To for the first email (if any)? ",
 861                default => "",
 862                valid_re => qr/\@.*\./, confirm_only => 1);
 863}
 864if (defined $initial_reply_to) {
 865        $initial_reply_to =~ s/^\s*<?//;
 866        $initial_reply_to =~ s/>?\s*$//;
 867        $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 868}
 869
 870if (!defined $smtp_server) {
 871        foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 872                if (-x $_) {
 873                        $smtp_server = $_;
 874                        last;
 875                }
 876        }
 877        $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 878}
 879
 880if ($compose && $compose > 0) {
 881        @files = ($compose_filename . ".final", @files);
 882}
 883
 884# Variables we set as part of the loop over files
 885our ($message_id, %mail, $subject, $reply_to, $references, $message,
 886        $needs_confirm, $message_num, $ask_default);
 887
 888sub extract_valid_address {
 889        my $address = shift;
 890        my $local_part_regexp = qr/[^<>"\s@]+/;
 891        my $domain_regexp = qr/[^.<>"\s@]+(?:\.[^.<>"\s@]+)+/;
 892
 893        # check for a local address:
 894        return $address if ($address =~ /^($local_part_regexp)$/);
 895
 896        $address =~ s/^\s*<(.*)>\s*$/$1/;
 897        if ($have_email_valid) {
 898                return scalar Email::Valid->address($address);
 899        }
 900
 901        # less robust/correct than the monster regexp in Email::Valid,
 902        # but still does a 99% job, and one less dependency
 903        return $1 if $address =~ /($local_part_regexp\@$domain_regexp)/;
 904        return;
 905}
 906
 907sub extract_valid_address_or_die {
 908        my $address = shift;
 909        $address = extract_valid_address($address);
 910        die "error: unable to extract a valid address from: $address\n"
 911                if !$address;
 912        return $address;
 913}
 914
 915sub validate_address {
 916        my $address = shift;
 917        while (!extract_valid_address($address)) {
 918                print STDERR "error: unable to extract a valid address from: $address\n";
 919                $_ = ask("What to do with this address? ([q]uit|[d]rop|[e]dit): ",
 920                        valid_re => qr/^(?:quit|q|drop|d|edit|e)/i,
 921                        default => 'q');
 922                if (/^d/i) {
 923                        return undef;
 924                } elsif (/^q/i) {
 925                        cleanup_compose_files();
 926                        exit(0);
 927                }
 928                $address = ask("$to_whom ",
 929                        default => "",
 930                        valid_re => qr/\@.*\./, confirm_only => 1);
 931        }
 932        return $address;
 933}
 934
 935sub validate_address_list {
 936        return (grep { defined $_ }
 937                map { validate_address($_) } @_);
 938}
 939
 940# Usually don't need to change anything below here.
 941
 942# we make a "fake" message id by taking the current number
 943# of seconds since the beginning of Unix time and tacking on
 944# a random number to the end, in case we are called quicker than
 945# 1 second since the last time we were called.
 946
 947# We'll setup a template for the message id, using the "from" address:
 948
 949my ($message_id_stamp, $message_id_serial);
 950sub make_message_id {
 951        my $uniq;
 952        if (!defined $message_id_stamp) {
 953                $message_id_stamp = strftime("%Y%m%d%H%M%S.$$", gmtime(time));
 954                $message_id_serial = 0;
 955        }
 956        $message_id_serial++;
 957        $uniq = "$message_id_stamp-$message_id_serial";
 958
 959        my $du_part;
 960        for ($sender, $repocommitter, $repoauthor) {
 961                $du_part = extract_valid_address(sanitize_address($_));
 962                last if (defined $du_part and $du_part ne '');
 963        }
 964        if (not defined $du_part or $du_part eq '') {
 965                require Sys::Hostname;
 966                $du_part = 'user@' . Sys::Hostname::hostname();
 967        }
 968        my $message_id_template = "<%s-%s>";
 969        $message_id = sprintf($message_id_template, $uniq, $du_part);
 970        #print "new message id = $message_id\n"; # Was useful for debugging
 971}
 972
 973
 974
 975$time = time - scalar $#files;
 976
 977sub unquote_rfc2047 {
 978        local ($_) = @_;
 979        my $charset;
 980        my $sep = qr/[ \t]+/;
 981        s{$re_encoded_word(?:$sep$re_encoded_word)*}{
 982                my @words = split $sep, $&;
 983                foreach (@words) {
 984                        m/$re_encoded_word/;
 985                        $charset = $1;
 986                        my $encoding = $2;
 987                        my $text = $3;
 988                        if ($encoding eq 'q' || $encoding eq 'Q') {
 989                                $_ = $text;
 990                                s/_/ /g;
 991                                s/=([0-9A-F]{2})/chr(hex($1))/egi;
 992                        } else {
 993                                # other encodings not supported yet
 994                        }
 995                }
 996                join '', @words;
 997        }eg;
 998        return wantarray ? ($_, $charset) : $_;
 999}
1000
1001sub quote_rfc2047 {
1002        local $_ = shift;
1003        my $encoding = shift || 'UTF-8';
1004        s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
1005        s/(.*)/=\?$encoding\?q\?$1\?=/;
1006        return $_;
1007}
1008
1009sub is_rfc2047_quoted {
1010        my $s = shift;
1011        length($s) <= 75 &&
1012        $s =~ m/^(?:"[[:ascii:]]*"|$re_encoded_word)$/o;
1013}
1014
1015sub subject_needs_rfc2047_quoting {
1016        my $s = shift;
1017
1018        return ($s =~ /[^[:ascii:]]/) || ($s =~ /=\?/);
1019}
1020
1021sub quote_subject {
1022        local $subject = shift;
1023        my $encoding = shift || 'UTF-8';
1024
1025        if (subject_needs_rfc2047_quoting($subject)) {
1026                return quote_rfc2047($subject, $encoding);
1027        }
1028        return $subject;
1029}
1030
1031# use the simplest quoting being able to handle the recipient
1032sub sanitize_address {
1033        my ($recipient) = @_;
1034
1035        # remove garbage after email address
1036        $recipient =~ s/(.*>).*$/$1/;
1037
1038        my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
1039
1040        if (not $recipient_name) {
1041                return $recipient;
1042        }
1043
1044        # if recipient_name is already quoted, do nothing
1045        if (is_rfc2047_quoted($recipient_name)) {
1046                return $recipient;
1047        }
1048
1049        # remove non-escaped quotes
1050        $recipient_name =~ s/(^|[^\\])"/$1/g;
1051
1052        # rfc2047 is needed if a non-ascii char is included
1053        if ($recipient_name =~ /[^[:ascii:]]/) {
1054                $recipient_name = quote_rfc2047($recipient_name);
1055        }
1056
1057        # double quotes are needed if specials or CTLs are included
1058        elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
1059                $recipient_name =~ s/([\\\r])/\\$1/g;
1060                $recipient_name = qq["$recipient_name"];
1061        }
1062
1063        return "$recipient_name $recipient_addr";
1064
1065}
1066
1067sub sanitize_address_list {
1068        return (map { sanitize_address($_) } @_);
1069}
1070
1071sub process_address_list {
1072        my @addr_list = map { parse_address_line($_) } @_;
1073        @addr_list = expand_aliases(@addr_list);
1074        @addr_list = sanitize_address_list(@addr_list);
1075        @addr_list = validate_address_list(@addr_list);
1076        return @addr_list;
1077}
1078
1079# Returns the local Fully Qualified Domain Name (FQDN) if available.
1080#
1081# Tightly configured MTAa require that a caller sends a real DNS
1082# domain name that corresponds the IP address in the HELO/EHLO
1083# handshake. This is used to verify the connection and prevent
1084# spammers from trying to hide their identity. If the DNS and IP don't
1085# match, the receiveing MTA may deny the connection.
1086#
1087# Here is a deny example of Net::SMTP with the default "localhost.localdomain"
1088#
1089# Net::SMTP=GLOB(0x267ec28)>>> EHLO localhost.localdomain
1090# Net::SMTP=GLOB(0x267ec28)<<< 550 EHLO argument does not match calling host
1091#
1092# This maildomain*() code is based on ideas in Perl library Test::Reporter
1093# /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
1094
1095sub valid_fqdn {
1096        my $domain = shift;
1097        return defined $domain && !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./;
1098}
1099
1100sub maildomain_net {
1101        my $maildomain;
1102
1103        if (eval { require Net::Domain; 1 }) {
1104                my $domain = Net::Domain::domainname();
1105                $maildomain = $domain if valid_fqdn($domain);
1106        }
1107
1108        return $maildomain;
1109}
1110
1111sub maildomain_mta {
1112        my $maildomain;
1113
1114        if (eval { require Net::SMTP; 1 }) {
1115                for my $host (qw(mailhost localhost)) {
1116                        my $smtp = Net::SMTP->new($host);
1117                        if (defined $smtp) {
1118                                my $domain = $smtp->domain;
1119                                $smtp->quit;
1120
1121                                $maildomain = $domain if valid_fqdn($domain);
1122
1123                                last if $maildomain;
1124                        }
1125                }
1126        }
1127
1128        return $maildomain;
1129}
1130
1131sub maildomain {
1132        return maildomain_net() || maildomain_mta() || 'localhost.localdomain';
1133}
1134
1135sub smtp_host_string {
1136        if (defined $smtp_server_port) {
1137                return "$smtp_server:$smtp_server_port";
1138        } else {
1139                return $smtp_server;
1140        }
1141}
1142
1143# Returns 1 if authentication succeeded or was not necessary
1144# (smtp_user was not specified), and 0 otherwise.
1145
1146sub smtp_auth_maybe {
1147        if (!defined $smtp_authuser || $auth) {
1148                return 1;
1149        }
1150
1151        # Workaround AUTH PLAIN/LOGIN interaction defect
1152        # with Authen::SASL::Cyrus
1153        eval {
1154                require Authen::SASL;
1155                Authen::SASL->import(qw(Perl));
1156        };
1157
1158        # Check mechanism naming as defined in:
1159        # https://tools.ietf.org/html/rfc4422#page-8
1160        if ($smtp_auth && $smtp_auth !~ /^(\b[A-Z0-9-_]{1,20}\s*)*$/) {
1161                die "invalid smtp auth: '${smtp_auth}'";
1162        }
1163
1164        # TODO: Authentication may fail not because credentials were
1165        # invalid but due to other reasons, in which we should not
1166        # reject credentials.
1167        $auth = Git::credential({
1168                'protocol' => 'smtp',
1169                'host' => smtp_host_string(),
1170                'username' => $smtp_authuser,
1171                # if there's no password, "git credential fill" will
1172                # give us one, otherwise it'll just pass this one.
1173                'password' => $smtp_authpass
1174        }, sub {
1175                my $cred = shift;
1176
1177                if ($smtp_auth) {
1178                        my $sasl = Authen::SASL->new(
1179                                mechanism => $smtp_auth,
1180                                callback => {
1181                                        user => $cred->{'username'},
1182                                        pass => $cred->{'password'},
1183                                        authname => $cred->{'username'},
1184                                }
1185                        );
1186
1187                        return !!$smtp->auth($sasl);
1188                }
1189
1190                return !!$smtp->auth($cred->{'username'}, $cred->{'password'});
1191        });
1192
1193        return $auth;
1194}
1195
1196sub ssl_verify_params {
1197        eval {
1198                require IO::Socket::SSL;
1199                IO::Socket::SSL->import(qw/SSL_VERIFY_PEER SSL_VERIFY_NONE/);
1200        };
1201        if ($@) {
1202                print STDERR "Not using SSL_VERIFY_PEER due to out-of-date IO::Socket::SSL.\n";
1203                return;
1204        }
1205
1206        if (!defined $smtp_ssl_cert_path) {
1207                # use the OpenSSL defaults
1208                return (SSL_verify_mode => SSL_VERIFY_PEER());
1209        }
1210
1211        if ($smtp_ssl_cert_path eq "") {
1212                return (SSL_verify_mode => SSL_VERIFY_NONE());
1213        } elsif (-d $smtp_ssl_cert_path) {
1214                return (SSL_verify_mode => SSL_VERIFY_PEER(),
1215                        SSL_ca_path => $smtp_ssl_cert_path);
1216        } elsif (-f $smtp_ssl_cert_path) {
1217                return (SSL_verify_mode => SSL_VERIFY_PEER(),
1218                        SSL_ca_file => $smtp_ssl_cert_path);
1219        } else {
1220                die "CA path \"$smtp_ssl_cert_path\" does not exist";
1221        }
1222}
1223
1224sub file_name_is_absolute {
1225        my ($path) = @_;
1226
1227        # msys does not grok DOS drive-prefixes
1228        if ($^O eq 'msys') {
1229                return ($path =~ m#^/# || $path =~ m#^[a-zA-Z]\:#)
1230        }
1231
1232        require File::Spec::Functions;
1233        return File::Spec::Functions::file_name_is_absolute($path);
1234}
1235
1236# Returns 1 if the message was sent, and 0 otherwise.
1237# In actuality, the whole program dies when there
1238# is an error sending a message.
1239
1240sub send_message {
1241        my @recipients = unique_email_list(@to);
1242        @cc = (grep { my $cc = extract_valid_address_or_die($_);
1243                      not grep { $cc eq $_ || $_ =~ /<\Q${cc}\E>$/ } @recipients
1244                    }
1245               @cc);
1246        my $to = join (",\n\t", @recipients);
1247        @recipients = unique_email_list(@recipients,@cc,@bcclist);
1248        @recipients = (map { extract_valid_address_or_die($_) } @recipients);
1249        my $date = format_2822_time($time++);
1250        my $gitversion = '@@GIT_VERSION@@';
1251        if ($gitversion =~ m/..GIT_VERSION../) {
1252            $gitversion = Git::version();
1253        }
1254
1255        my $cc = join(",\n\t", unique_email_list(@cc));
1256        my $ccline = "";
1257        if ($cc ne '') {
1258                $ccline = "\nCc: $cc";
1259        }
1260        make_message_id() unless defined($message_id);
1261
1262        my $header = "From: $sender
1263To: $to${ccline}
1264Subject: $subject
1265Date: $date
1266Message-Id: $message_id
1267";
1268        if ($use_xmailer) {
1269                $header .= "X-Mailer: git-send-email $gitversion\n";
1270        }
1271        if ($reply_to) {
1272
1273                $header .= "In-Reply-To: $reply_to\n";
1274                $header .= "References: $references\n";
1275        }
1276        if (@xh) {
1277                $header .= join("\n", @xh) . "\n";
1278        }
1279
1280        my @sendmail_parameters = ('-i', @recipients);
1281        my $raw_from = $sender;
1282        if (defined $envelope_sender && $envelope_sender ne "auto") {
1283                $raw_from = $envelope_sender;
1284        }
1285        $raw_from = extract_valid_address($raw_from);
1286        unshift (@sendmail_parameters,
1287                        '-f', $raw_from) if(defined $envelope_sender);
1288
1289        if ($needs_confirm && !$dry_run) {
1290                print "\n$header\n";
1291                if ($needs_confirm eq "inform") {
1292                        $confirm_unconfigured = 0; # squelch this message for the rest of this run
1293                        $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
1294                        print "    The Cc list above has been expanded by additional\n";
1295                        print "    addresses found in the patch commit message. By default\n";
1296                        print "    send-email prompts before sending whenever this occurs.\n";
1297                        print "    This behavior is controlled by the sendemail.confirm\n";
1298                        print "    configuration setting.\n";
1299                        print "\n";
1300                        print "    For additional information, run 'git send-email --help'.\n";
1301                        print "    To retain the current behavior, but squelch this message,\n";
1302                        print "    run 'git config --global sendemail.confirm auto'.\n\n";
1303                }
1304                $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ",
1305                         valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
1306                         default => $ask_default);
1307                die "Send this email reply required" unless defined $_;
1308                if (/^n/i) {
1309                        return 0;
1310                } elsif (/^q/i) {
1311                        cleanup_compose_files();
1312                        exit(0);
1313                } elsif (/^a/i) {
1314                        $confirm = 'never';
1315                }
1316        }
1317
1318        unshift (@sendmail_parameters, @smtp_server_options);
1319
1320        if ($dry_run) {
1321                # We don't want to send the email.
1322        } elsif (file_name_is_absolute($smtp_server)) {
1323                my $pid = open my $sm, '|-';
1324                defined $pid or die $!;
1325                if (!$pid) {
1326                        exec($smtp_server, @sendmail_parameters) or die $!;
1327                }
1328                print $sm "$header\n$message";
1329                close $sm or die $!;
1330        } else {
1331
1332                if (!defined $smtp_server) {
1333                        die "The required SMTP server is not properly defined."
1334                }
1335
1336                if ($smtp_encryption eq 'ssl') {
1337                        $smtp_server_port ||= 465; # ssmtp
1338                        require Net::SMTP::SSL;
1339                        $smtp_domain ||= maildomain();
1340                        require IO::Socket::SSL;
1341
1342                        # Suppress "variable accessed once" warning.
1343                        {
1344                                no warnings 'once';
1345                                $IO::Socket::SSL::DEBUG = 1;
1346                        }
1347
1348                        # Net::SMTP::SSL->new() does not forward any SSL options
1349                        IO::Socket::SSL::set_client_defaults(
1350                                ssl_verify_params());
1351                        $smtp ||= Net::SMTP::SSL->new($smtp_server,
1352                                                      Hello => $smtp_domain,
1353                                                      Port => $smtp_server_port,
1354                                                      Debug => $debug_net_smtp);
1355                }
1356                else {
1357                        require Net::SMTP;
1358                        $smtp_domain ||= maildomain();
1359                        $smtp_server_port ||= 25;
1360                        $smtp ||= Net::SMTP->new($smtp_server,
1361                                                 Hello => $smtp_domain,
1362                                                 Debug => $debug_net_smtp,
1363                                                 Port => $smtp_server_port);
1364                        if ($smtp_encryption eq 'tls' && $smtp) {
1365                                require Net::SMTP::SSL;
1366                                $smtp->command('STARTTLS');
1367                                $smtp->response();
1368                                if ($smtp->code == 220) {
1369                                        $smtp = Net::SMTP::SSL->start_SSL($smtp,
1370                                                                          ssl_verify_params())
1371                                                or die "STARTTLS failed! ".IO::Socket::SSL::errstr();
1372                                        $smtp_encryption = '';
1373                                        # Send EHLO again to receive fresh
1374                                        # supported commands
1375                                        $smtp->hello($smtp_domain);
1376                                } else {
1377                                        die "Server does not support STARTTLS! ".$smtp->message;
1378                                }
1379                        }
1380                }
1381
1382                if (!$smtp) {
1383                        die "Unable to initialize SMTP properly. Check config and use --smtp-debug. ",
1384                            "VALUES: server=$smtp_server ",
1385                            "encryption=$smtp_encryption ",
1386                            "hello=$smtp_domain",
1387                            defined $smtp_server_port ? " port=$smtp_server_port" : "";
1388                }
1389
1390                smtp_auth_maybe or die $smtp->message;
1391
1392                $smtp->mail( $raw_from ) or die $smtp->message;
1393                $smtp->to( @recipients ) or die $smtp->message;
1394                $smtp->data or die $smtp->message;
1395                $smtp->datasend("$header\n") or die $smtp->message;
1396                my @lines = split /^/, $message;
1397                foreach my $line (@lines) {
1398                        $smtp->datasend("$line") or die $smtp->message;
1399                }
1400                $smtp->dataend() or die $smtp->message;
1401                $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message;
1402        }
1403        if ($quiet) {
1404                printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject);
1405        } else {
1406                print (($dry_run ? "Dry-" : "")."OK. Log says:\n");
1407                if (!file_name_is_absolute($smtp_server)) {
1408                        print "Server: $smtp_server\n";
1409                        print "MAIL FROM:<$raw_from>\n";
1410                        foreach my $entry (@recipients) {
1411                            print "RCPT TO:<$entry>\n";
1412                        }
1413                } else {
1414                        print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
1415                }
1416                print $header, "\n";
1417                if ($smtp) {
1418                        print "Result: ", $smtp->code, ' ',
1419                                ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
1420                } else {
1421                        print "Result: OK\n";
1422                }
1423        }
1424
1425        return 1;
1426}
1427
1428$reply_to = $initial_reply_to;
1429$references = $initial_reply_to || '';
1430$subject = $initial_subject;
1431$message_num = 0;
1432
1433foreach my $t (@files) {
1434        open my $fh, "<", $t or die "can't open file $t";
1435
1436        my $author = undef;
1437        my $sauthor = undef;
1438        my $author_encoding;
1439        my $has_content_type;
1440        my $body_encoding;
1441        my $xfer_encoding;
1442        my $has_mime_version;
1443        @to = ();
1444        @cc = ();
1445        @xh = ();
1446        my $input_format = undef;
1447        my @header = ();
1448        $message = "";
1449        $message_num++;
1450        # First unfold multiline header fields
1451        while(<$fh>) {
1452                last if /^\s*$/;
1453                if (/^\s+\S/ and @header) {
1454                        chomp($header[$#header]);
1455                        s/^\s+/ /;
1456                        $header[$#header] .= $_;
1457            } else {
1458                        push(@header, $_);
1459                }
1460        }
1461        # Now parse the header
1462        foreach(@header) {
1463                if (/^From /) {
1464                        $input_format = 'mbox';
1465                        next;
1466                }
1467                chomp;
1468                if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1469                        $input_format = 'mbox';
1470                }
1471
1472                if (defined $input_format && $input_format eq 'mbox') {
1473                        if (/^Subject:\s+(.*)$/i) {
1474                                $subject = $1;
1475                        }
1476                        elsif (/^From:\s+(.*)$/i) {
1477                                ($author, $author_encoding) = unquote_rfc2047($1);
1478                                $sauthor = sanitize_address($author);
1479                                next if $suppress_cc{'author'};
1480                                next if $suppress_cc{'self'} and $sauthor eq $sender;
1481                                printf("(mbox) Adding cc: %s from line '%s'\n",
1482                                        $1, $_) unless $quiet;
1483                                push @cc, $1;
1484                        }
1485                        elsif (/^To:\s+(.*)$/i) {
1486                                foreach my $addr (parse_address_line($1)) {
1487                                        printf("(mbox) Adding to: %s from line '%s'\n",
1488                                                $addr, $_) unless $quiet;
1489                                        push @to, $addr;
1490                                }
1491                        }
1492                        elsif (/^Cc:\s+(.*)$/i) {
1493                                foreach my $addr (parse_address_line($1)) {
1494                                        my $qaddr = unquote_rfc2047($addr);
1495                                        my $saddr = sanitize_address($qaddr);
1496                                        if ($saddr eq $sender) {
1497                                                next if ($suppress_cc{'self'});
1498                                        } else {
1499                                                next if ($suppress_cc{'cc'});
1500                                        }
1501                                        printf("(mbox) Adding cc: %s from line '%s'\n",
1502                                                $addr, $_) unless $quiet;
1503                                        push @cc, $addr;
1504                                }
1505                        }
1506                        elsif (/^Content-type:/i) {
1507                                $has_content_type = 1;
1508                                if (/charset="?([^ "]+)/) {
1509                                        $body_encoding = $1;
1510                                }
1511                                push @xh, $_;
1512                        }
1513                        elsif (/^MIME-Version/i) {
1514                                $has_mime_version = 1;
1515                                push @xh, $_;
1516                        }
1517                        elsif (/^Message-Id: (.*)/i) {
1518                                $message_id = $1;
1519                        }
1520                        elsif (/^Content-Transfer-Encoding: (.*)/i) {
1521                                $xfer_encoding = $1 if not defined $xfer_encoding;
1522                        }
1523                        elsif (!/^Date:\s/i && /^[-A-Za-z]+:\s+\S/) {
1524                                push @xh, $_;
1525                        }
1526
1527                } else {
1528                        # In the traditional
1529                        # "send lots of email" format,
1530                        # line 1 = cc
1531                        # line 2 = subject
1532                        # So let's support that, too.
1533                        $input_format = 'lots';
1534                        if (@cc == 0 && !$suppress_cc{'cc'}) {
1535                                printf("(non-mbox) Adding cc: %s from line '%s'\n",
1536                                        $_, $_) unless $quiet;
1537                                push @cc, $_;
1538                        } elsif (!defined $subject) {
1539                                $subject = $_;
1540                        }
1541                }
1542        }
1543        # Now parse the message body
1544        while(<$fh>) {
1545                $message .=  $_;
1546                if (/^(Signed-off-by|Cc): (.*)$/i) {
1547                        chomp;
1548                        my ($what, $c) = ($1, $2);
1549                        chomp $c;
1550                        my $sc = sanitize_address($c);
1551                        if ($sc eq $sender) {
1552                                next if ($suppress_cc{'self'});
1553                        } else {
1554                                next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1555                                next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1556                        }
1557                        push @cc, $c;
1558                        printf("(body) Adding cc: %s from line '%s'\n",
1559                                $c, $_) unless $quiet;
1560                }
1561        }
1562        close $fh;
1563
1564        push @to, recipients_cmd("to-cmd", "to", $to_cmd, $t)
1565                if defined $to_cmd;
1566        push @cc, recipients_cmd("cc-cmd", "cc", $cc_cmd, $t)
1567                if defined $cc_cmd && !$suppress_cc{'cccmd'};
1568
1569        if ($broken_encoding{$t} && !$has_content_type) {
1570                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1571                $has_content_type = 1;
1572                push @xh, "Content-Type: text/plain; charset=$auto_8bit_encoding";
1573                $body_encoding = $auto_8bit_encoding;
1574        }
1575
1576        if ($broken_encoding{$t} && !is_rfc2047_quoted($subject)) {
1577                $subject = quote_subject($subject, $auto_8bit_encoding);
1578        }
1579
1580        if (defined $sauthor and $sauthor ne $sender) {
1581                $message = "From: $author\n\n$message";
1582                if (defined $author_encoding) {
1583                        if ($has_content_type) {
1584                                if ($body_encoding eq $author_encoding) {
1585                                        # ok, we already have the right encoding
1586                                }
1587                                else {
1588                                        # uh oh, we should re-encode
1589                                }
1590                        }
1591                        else {
1592                                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1593                                $has_content_type = 1;
1594                                push @xh,
1595                                  "Content-Type: text/plain; charset=$author_encoding";
1596                        }
1597                }
1598        }
1599        if (defined $target_xfer_encoding) {
1600                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1601                $message = apply_transfer_encoding(
1602                        $message, $xfer_encoding, $target_xfer_encoding);
1603                $xfer_encoding = $target_xfer_encoding;
1604        }
1605        if (defined $xfer_encoding) {
1606                push @xh, "Content-Transfer-Encoding: $xfer_encoding";
1607        }
1608        if (defined $xfer_encoding or $has_content_type) {
1609                unshift @xh, 'MIME-Version: 1.0' unless $has_mime_version;
1610        }
1611
1612        $needs_confirm = (
1613                $confirm eq "always" or
1614                ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1615                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1616        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1617
1618        @to = process_address_list(@to);
1619        @cc = process_address_list(@cc);
1620
1621        @to = (@initial_to, @to);
1622        @cc = (@initial_cc, @cc);
1623
1624        if ($message_num == 1) {
1625                if (defined $cover_cc and $cover_cc) {
1626                        @initial_cc = @cc;
1627                }
1628                if (defined $cover_to and $cover_to) {
1629                        @initial_to = @to;
1630                }
1631        }
1632
1633        my $message_was_sent = send_message();
1634
1635        # set up for the next message
1636        if ($thread && $message_was_sent &&
1637                ($chain_reply_to || !defined $reply_to || length($reply_to) == 0 ||
1638                $message_num == 1)) {
1639                $reply_to = $message_id;
1640                if (length $references > 0) {
1641                        $references .= "\n $message_id";
1642                } else {
1643                        $references = "$message_id";
1644                }
1645        }
1646        $message_id = undef;
1647}
1648
1649# Execute a command (e.g. $to_cmd) to get a list of email addresses
1650# and return a results array
1651sub recipients_cmd {
1652        my ($prefix, $what, $cmd, $file) = @_;
1653
1654        my @addresses = ();
1655        open my $fh, "-|", "$cmd \Q$file\E"
1656            or die "($prefix) Could not execute '$cmd'";
1657        while (my $address = <$fh>) {
1658                $address =~ s/^\s*//g;
1659                $address =~ s/\s*$//g;
1660                $address = sanitize_address($address);
1661                next if ($address eq $sender and $suppress_cc{'self'});
1662                push @addresses, $address;
1663                printf("($prefix) Adding %s: %s from: '%s'\n",
1664                       $what, $address, $cmd) unless $quiet;
1665                }
1666        close $fh
1667            or die "($prefix) failed to close pipe to '$cmd'";
1668        return @addresses;
1669}
1670
1671cleanup_compose_files();
1672
1673sub cleanup_compose_files {
1674        unlink($compose_filename, $compose_filename . ".final") if $compose;
1675}
1676
1677$smtp->quit if $smtp;
1678
1679sub apply_transfer_encoding {
1680        my $message = shift;
1681        my $from = shift;
1682        my $to = shift;
1683
1684        return $message if ($from eq $to and $from ne '7bit');
1685
1686        require MIME::QuotedPrint;
1687        require MIME::Base64;
1688
1689        $message = MIME::QuotedPrint::decode($message)
1690                if ($from eq 'quoted-printable');
1691        $message = MIME::Base64::decode($message)
1692                if ($from eq 'base64');
1693
1694        die "cannot send message as 7bit"
1695                if ($to eq '7bit' and $message =~ /[^[:ascii:]]/);
1696        return $message
1697                if ($to eq '7bit' or $to eq '8bit');
1698        return MIME::QuotedPrint::encode($message, "\n", 0)
1699                if ($to eq 'quoted-printable');
1700        return MIME::Base64::encode($message, "\n")
1701                if ($to eq 'base64');
1702        die "invalid transfer encoding";
1703}
1704
1705sub unique_email_list {
1706        my %seen;
1707        my @emails;
1708
1709        foreach my $entry (@_) {
1710                my $clean = extract_valid_address_or_die($entry);
1711                $seen{$clean} ||= 0;
1712                next if $seen{$clean}++;
1713                push @emails, $entry;
1714        }
1715        return @emails;
1716}
1717
1718sub validate_patch {
1719        my $fn = shift;
1720        open(my $fh, '<', $fn)
1721                or die "unable to open $fn: $!\n";
1722        while (my $line = <$fh>) {
1723                if (length($line) > 998) {
1724                        return "$.: patch contains a line longer than 998 characters";
1725                }
1726        }
1727        return;
1728}
1729
1730sub file_has_nonascii {
1731        my $fn = shift;
1732        open(my $fh, '<', $fn)
1733                or die "unable to open $fn: $!\n";
1734        while (my $line = <$fh>) {
1735                return 1 if $line =~ /[^[:ascii:]]/;
1736        }
1737        return 0;
1738}
1739
1740sub body_or_subject_has_nonascii {
1741        my $fn = shift;
1742        open(my $fh, '<', $fn)
1743                or die "unable to open $fn: $!\n";
1744        while (my $line = <$fh>) {
1745                last if $line =~ /^$/;
1746                return 1 if $line =~ /^Subject.*[^[:ascii:]]/;
1747        }
1748        while (my $line = <$fh>) {
1749                return 1 if $line =~ /[^[:ascii:]]/;
1750        }
1751        return 0;
1752}