git-send-email.perlon commit Doc/gitsubmodules: make some changes to improve readability and syntax (4f73a7f)
   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 Error qw(:try);
  30use Cwd qw(abs_path cwd);
  31use Git;
  32use Git::I18N;
  33
  34Getopt::Long::Configure qw/ pass_through /;
  35
  36package FakeTerm;
  37sub new {
  38        my ($class, $reason) = @_;
  39        return bless \$reason, shift;
  40}
  41sub readline {
  42        my $self = shift;
  43        die "Cannot use readline on FakeTerm: $$self";
  44}
  45package main;
  46
  47
  48sub usage {
  49        print <<EOT;
  50git send-email [options] <file | directory | rev-list options >
  51git send-email --dump-aliases
  52
  53  Composing:
  54    --from                  <str>  * Email From:
  55    --[no-]to               <str>  * Email To:
  56    --[no-]cc               <str>  * Email Cc:
  57    --[no-]bcc              <str>  * Email Bcc:
  58    --subject               <str>  * Email "Subject:"
  59    --in-reply-to           <str>  * Email "In-Reply-To:"
  60    --[no-]xmailer                 * Add "X-Mailer:" header (default).
  61    --[no-]annotate                * Review each patch that will be sent in an editor.
  62    --compose                      * Open an editor for introduction.
  63    --compose-encoding      <str>  * Encoding to assume for introduction.
  64    --8bit-encoding         <str>  * Encoding to assume 8bit mails if undeclared
  65    --transfer-encoding     <str>  * Transfer encoding to use (quoted-printable, 8bit, base64)
  66
  67  Sending:
  68    --envelope-sender       <str>  * Email envelope sender.
  69    --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
  70                                     is optional. Default 'localhost'.
  71    --smtp-server-option    <str>  * Outgoing SMTP server option to use.
  72    --smtp-server-port      <int>  * Outgoing SMTP server port.
  73    --smtp-user             <str>  * Username for SMTP-AUTH.
  74    --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
  75    --smtp-encryption       <str>  * tls or ssl; anything else disables.
  76    --smtp-ssl                     * Deprecated. Use '--smtp-encryption ssl'.
  77    --smtp-ssl-cert-path    <str>  * Path to ca-certificates (either directory or file).
  78                                     Pass an empty string to disable certificate
  79                                     verification.
  80    --smtp-domain           <str>  * The domain name sent to HELO/EHLO handshake
  81    --smtp-auth             <str>  * Space-separated list of allowed AUTH mechanisms.
  82                                     This setting forces to use one of the listed mechanisms.
  83    --smtp-debug            <0|1>  * Disable, enable Net::SMTP debug.
  84
  85    --batch-size            <int>  * send max <int> message per connection.
  86    --relogin-delay         <int>  * delay <int> seconds between two successive login.
  87                                     This option can only be used with --batch-size
  88
  89  Automating:
  90    --identity              <str>  * Use the sendemail.<id> options.
  91    --to-cmd                <str>  * Email To: via `<str> \$patch_path`
  92    --cc-cmd                <str>  * Email Cc: via `<str> \$patch_path`
  93    --suppress-cc           <str>  * author, self, sob, cc, cccmd, body, bodycc, all.
  94    --[no-]cc-cover                * Email Cc: addresses in the cover letter.
  95    --[no-]to-cover                * Email To: addresses in the cover letter.
  96    --[no-]signed-off-by-cc        * Send to Signed-off-by: addresses. Default on.
  97    --[no-]suppress-from           * Send to self. Default off.
  98    --[no-]chain-reply-to          * Chain In-Reply-To: fields. Default off.
  99    --[no-]thread                  * Use In-Reply-To: field. Default on.
 100
 101  Administering:
 102    --confirm               <str>  * Confirm recipients before sending;
 103                                     auto, cc, compose, always, or never.
 104    --quiet                        * Output one line of info per email.
 105    --dry-run                      * Don't actually send the emails.
 106    --[no-]validate                * Perform patch sanity checks. Default on.
 107    --[no-]format-patch            * understand any non optional arguments as
 108                                     `git format-patch` ones.
 109    --force                        * Send even if safety checks would prevent it.
 110
 111  Information:
 112    --dump-aliases                 * Dump configured aliases and exit.
 113
 114EOT
 115        exit(1);
 116}
 117
 118# most mail servers generate the Date: header, but not all...
 119sub format_2822_time {
 120        my ($time) = @_;
 121        my @localtm = localtime($time);
 122        my @gmttm = gmtime($time);
 123        my $localmin = $localtm[1] + $localtm[2] * 60;
 124        my $gmtmin = $gmttm[1] + $gmttm[2] * 60;
 125        if ($localtm[0] != $gmttm[0]) {
 126                die __("local zone differs from GMT by a non-minute interval\n");
 127        }
 128        if ((($gmttm[6] + 1) % 7) == $localtm[6]) {
 129                $localmin += 1440;
 130        } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) {
 131                $localmin -= 1440;
 132        } elsif ($gmttm[6] != $localtm[6]) {
 133                die __("local time offset greater than or equal to 24 hours\n");
 134        }
 135        my $offset = $localmin - $gmtmin;
 136        my $offhour = $offset / 60;
 137        my $offmin = abs($offset % 60);
 138        if (abs($offhour) >= 24) {
 139                die __("local time offset greater than or equal to 24 hours\n");
 140        }
 141
 142        return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d",
 143                       qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]],
 144                       $localtm[3],
 145                       qw(Jan Feb Mar Apr May Jun
 146                          Jul Aug Sep Oct Nov Dec)[$localtm[4]],
 147                       $localtm[5]+1900,
 148                       $localtm[2],
 149                       $localtm[1],
 150                       $localtm[0],
 151                       ($offset >= 0) ? '+' : '-',
 152                       abs($offhour),
 153                       $offmin,
 154                       );
 155}
 156
 157my $have_email_valid = eval { require Email::Valid; 1 };
 158my $smtp;
 159my $auth;
 160my $num_sent = 0;
 161
 162# Regexes for RFC 2047 productions.
 163my $re_token = qr/[^][()<>@,;:\\"\/?.= \000-\037\177-\377]+/;
 164my $re_encoded_text = qr/[^? \000-\037\177-\377]+/;
 165my $re_encoded_word = qr/=\?($re_token)\?($re_token)\?($re_encoded_text)\?=/;
 166
 167# Variables we fill in automatically, or via prompting:
 168my (@to,$no_to,@initial_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
 169        $initial_reply_to,$initial_subject,@files,
 170        $author,$sender,$smtp_authpass,$annotate,$use_xmailer,$compose,$time);
 171
 172my $envelope_sender;
 173
 174# Example reply to:
 175#$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
 176
 177my $repo = eval { Git->repository() };
 178my @repo = $repo ? ($repo) : ();
 179my $term = eval {
 180        $ENV{"GIT_SEND_EMAIL_NOTTY"}
 181                ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT
 182                : new Term::ReadLine 'git-send-email';
 183};
 184if ($@) {
 185        $term = new FakeTerm "$@: going non-interactive";
 186}
 187
 188# Behavior modification variables
 189my ($quiet, $dry_run) = (0, 0);
 190my $format_patch;
 191my $compose_filename;
 192my $force = 0;
 193my $dump_aliases = 0;
 194
 195# Handle interactive edition of files.
 196my $multiedit;
 197my $editor;
 198
 199sub do_edit {
 200        if (!defined($editor)) {
 201                $editor = Git::command_oneline('var', 'GIT_EDITOR');
 202        }
 203        if (defined($multiedit) && !$multiedit) {
 204                map {
 205                        system('sh', '-c', $editor.' "$@"', $editor, $_);
 206                        if (($? & 127) || ($? >> 8)) {
 207                                die(__("the editor exited uncleanly, aborting everything"));
 208                        }
 209                } @_;
 210        } else {
 211                system('sh', '-c', $editor.' "$@"', $editor, @_);
 212                if (($? & 127) || ($? >> 8)) {
 213                        die(__("the editor exited uncleanly, aborting everything"));
 214                }
 215        }
 216}
 217
 218# Variables with corresponding config settings
 219my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc);
 220my ($cover_cc, $cover_to);
 221my ($to_cmd, $cc_cmd);
 222my ($smtp_server, $smtp_server_port, @smtp_server_options);
 223my ($smtp_authuser, $smtp_encryption, $smtp_ssl_cert_path);
 224my ($batch_size, $relogin_delay);
 225my ($identity, $aliasfiletype, @alias_files, $smtp_domain, $smtp_auth);
 226my ($validate, $confirm);
 227my (@suppress_cc);
 228my ($auto_8bit_encoding);
 229my ($compose_encoding);
 230my ($target_xfer_encoding);
 231
 232my ($debug_net_smtp) = 0;               # Net::SMTP, see send_message()
 233
 234my %config_bool_settings = (
 235    "thread" => [\$thread, 1],
 236    "chainreplyto" => [\$chain_reply_to, 0],
 237    "suppressfrom" => [\$suppress_from, undef],
 238    "signedoffbycc" => [\$signed_off_by_cc, undef],
 239    "cccover" => [\$cover_cc, undef],
 240    "tocover" => [\$cover_to, undef],
 241    "signedoffcc" => [\$signed_off_by_cc, undef],      # Deprecated
 242    "validate" => [\$validate, 1],
 243    "multiedit" => [\$multiedit, undef],
 244    "annotate" => [\$annotate, undef],
 245    "xmailer" => [\$use_xmailer, 1]
 246);
 247
 248my %config_settings = (
 249    "smtpserver" => \$smtp_server,
 250    "smtpserverport" => \$smtp_server_port,
 251    "smtpserveroption" => \@smtp_server_options,
 252    "smtpuser" => \$smtp_authuser,
 253    "smtppass" => \$smtp_authpass,
 254    "smtpdomain" => \$smtp_domain,
 255    "smtpauth" => \$smtp_auth,
 256    "smtpbatchsize" => \$batch_size,
 257    "smtprelogindelay" => \$relogin_delay,
 258    "to" => \@initial_to,
 259    "tocmd" => \$to_cmd,
 260    "cc" => \@initial_cc,
 261    "cccmd" => \$cc_cmd,
 262    "aliasfiletype" => \$aliasfiletype,
 263    "bcc" => \@bcclist,
 264    "suppresscc" => \@suppress_cc,
 265    "envelopesender" => \$envelope_sender,
 266    "confirm"   => \$confirm,
 267    "from" => \$sender,
 268    "assume8bitencoding" => \$auto_8bit_encoding,
 269    "composeencoding" => \$compose_encoding,
 270    "transferencoding" => \$target_xfer_encoding,
 271);
 272
 273my %config_path_settings = (
 274    "aliasesfile" => \@alias_files,
 275    "smtpsslcertpath" => \$smtp_ssl_cert_path,
 276);
 277
 278# Handle Uncouth Termination
 279sub signal_handler {
 280
 281        # Make text normal
 282        print color("reset"), "\n";
 283
 284        # SMTP password masked
 285        system "stty echo";
 286
 287        # tmp files from --compose
 288        if (defined $compose_filename) {
 289                if (-e $compose_filename) {
 290                        printf __("'%s' contains an intermediate version ".
 291                                  "of the email you were composing.\n"),
 292                                  $compose_filename;
 293                }
 294                if (-e ($compose_filename . ".final")) {
 295                        printf __("'%s.final' contains the composed email.\n"),
 296                                  $compose_filename;
 297                }
 298        }
 299
 300        exit;
 301};
 302
 303$SIG{TERM} = \&signal_handler;
 304$SIG{INT}  = \&signal_handler;
 305
 306# Begin by accumulating all the variables (defined above), that we will end up
 307# needing, first, from the command line:
 308
 309my $help;
 310my $rc = GetOptions("h" => \$help,
 311                    "dump-aliases" => \$dump_aliases);
 312usage() unless $rc;
 313die __("--dump-aliases incompatible with other options\n")
 314    if !$help and $dump_aliases and @ARGV;
 315$rc = GetOptions(
 316                    "sender|from=s" => \$sender,
 317                    "in-reply-to=s" => \$initial_reply_to,
 318                    "subject=s" => \$initial_subject,
 319                    "to=s" => \@initial_to,
 320                    "to-cmd=s" => \$to_cmd,
 321                    "no-to" => \$no_to,
 322                    "cc=s" => \@initial_cc,
 323                    "no-cc" => \$no_cc,
 324                    "bcc=s" => \@bcclist,
 325                    "no-bcc" => \$no_bcc,
 326                    "chain-reply-to!" => \$chain_reply_to,
 327                    "no-chain-reply-to" => sub {$chain_reply_to = 0},
 328                    "smtp-server=s" => \$smtp_server,
 329                    "smtp-server-option=s" => \@smtp_server_options,
 330                    "smtp-server-port=s" => \$smtp_server_port,
 331                    "smtp-user=s" => \$smtp_authuser,
 332                    "smtp-pass:s" => \$smtp_authpass,
 333                    "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 334                    "smtp-encryption=s" => \$smtp_encryption,
 335                    "smtp-ssl-cert-path=s" => \$smtp_ssl_cert_path,
 336                    "smtp-debug:i" => \$debug_net_smtp,
 337                    "smtp-domain:s" => \$smtp_domain,
 338                    "smtp-auth=s" => \$smtp_auth,
 339                    "identity=s" => \$identity,
 340                    "annotate!" => \$annotate,
 341                    "no-annotate" => sub {$annotate = 0},
 342                    "compose" => \$compose,
 343                    "quiet" => \$quiet,
 344                    "cc-cmd=s" => \$cc_cmd,
 345                    "suppress-from!" => \$suppress_from,
 346                    "no-suppress-from" => sub {$suppress_from = 0},
 347                    "suppress-cc=s" => \@suppress_cc,
 348                    "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc,
 349                    "no-signed-off-cc|no-signed-off-by-cc" => sub {$signed_off_by_cc = 0},
 350                    "cc-cover|cc-cover!" => \$cover_cc,
 351                    "no-cc-cover" => sub {$cover_cc = 0},
 352                    "to-cover|to-cover!" => \$cover_to,
 353                    "no-to-cover" => sub {$cover_to = 0},
 354                    "confirm=s" => \$confirm,
 355                    "dry-run" => \$dry_run,
 356                    "envelope-sender=s" => \$envelope_sender,
 357                    "thread!" => \$thread,
 358                    "no-thread" => sub {$thread = 0},
 359                    "validate!" => \$validate,
 360                    "no-validate" => sub {$validate = 0},
 361                    "transfer-encoding=s" => \$target_xfer_encoding,
 362                    "format-patch!" => \$format_patch,
 363                    "no-format-patch" => sub {$format_patch = 0},
 364                    "8bit-encoding=s" => \$auto_8bit_encoding,
 365                    "compose-encoding=s" => \$compose_encoding,
 366                    "force" => \$force,
 367                    "xmailer!" => \$use_xmailer,
 368                    "no-xmailer" => sub {$use_xmailer = 0},
 369                    "batch-size=i" => \$batch_size,
 370                    "relogin-delay=i" => \$relogin_delay,
 371         );
 372
 373usage() if $help;
 374unless ($rc) {
 375    usage();
 376}
 377
 378die __("Cannot run git format-patch from outside a repository\n")
 379        if $format_patch and not $repo;
 380
 381# Now, let's fill any that aren't set in with defaults:
 382
 383sub read_config {
 384        my ($prefix) = @_;
 385
 386        foreach my $setting (keys %config_bool_settings) {
 387                my $target = $config_bool_settings{$setting}->[0];
 388                $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 389        }
 390
 391        foreach my $setting (keys %config_path_settings) {
 392                my $target = $config_path_settings{$setting};
 393                if (ref($target) eq "ARRAY") {
 394                        unless (@$target) {
 395                                my @values = Git::config_path(@repo, "$prefix.$setting");
 396                                @$target = @values if (@values && defined $values[0]);
 397                        }
 398                }
 399                else {
 400                        $$target = Git::config_path(@repo, "$prefix.$setting") unless (defined $$target);
 401                }
 402        }
 403
 404        foreach my $setting (keys %config_settings) {
 405                my $target = $config_settings{$setting};
 406                next if $setting eq "to" and defined $no_to;
 407                next if $setting eq "cc" and defined $no_cc;
 408                next if $setting eq "bcc" and defined $no_bcc;
 409                if (ref($target) eq "ARRAY") {
 410                        unless (@$target) {
 411                                my @values = Git::config(@repo, "$prefix.$setting");
 412                                @$target = @values if (@values && defined $values[0]);
 413                        }
 414                }
 415                else {
 416                        $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target);
 417                }
 418        }
 419
 420        if (!defined $smtp_encryption) {
 421                my $enc = Git::config(@repo, "$prefix.smtpencryption");
 422                if (defined $enc) {
 423                        $smtp_encryption = $enc;
 424                } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
 425                        $smtp_encryption = 'ssl';
 426                }
 427        }
 428}
 429
 430# read configuration from [sendemail "$identity"], fall back on [sendemail]
 431$identity = Git::config(@repo, "sendemail.identity") unless (defined $identity);
 432read_config("sendemail.$identity") if (defined $identity);
 433read_config("sendemail");
 434
 435# fall back on builtin bool defaults
 436foreach my $setting (values %config_bool_settings) {
 437        ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]}));
 438}
 439
 440# 'default' encryption is none -- this only prevents a warning
 441$smtp_encryption = '' unless (defined $smtp_encryption);
 442
 443# Set CC suppressions
 444my(%suppress_cc);
 445if (@suppress_cc) {
 446        foreach my $entry (@suppress_cc) {
 447                die sprintf(__("Unknown --suppress-cc field: '%s'\n"), $entry)
 448                        unless $entry =~ /^(?:all|cccmd|cc|author|self|sob|body|bodycc)$/;
 449                $suppress_cc{$entry} = 1;
 450        }
 451}
 452
 453if ($suppress_cc{'all'}) {
 454        foreach my $entry (qw (cccmd cc author self sob body bodycc)) {
 455                $suppress_cc{$entry} = 1;
 456        }
 457        delete $suppress_cc{'all'};
 458}
 459
 460# If explicit old-style ones are specified, they trump --suppress-cc.
 461$suppress_cc{'self'} = $suppress_from if defined $suppress_from;
 462$suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc;
 463
 464if ($suppress_cc{'body'}) {
 465        foreach my $entry (qw (sob bodycc)) {
 466                $suppress_cc{$entry} = 1;
 467        }
 468        delete $suppress_cc{'body'};
 469}
 470
 471# Set confirm's default value
 472my $confirm_unconfigured = !defined $confirm;
 473if ($confirm_unconfigured) {
 474        $confirm = scalar %suppress_cc ? 'compose' : 'auto';
 475};
 476die sprintf(__("Unknown --confirm setting: '%s'\n"), $confirm)
 477        unless $confirm =~ /^(?:auto|cc|compose|always|never)/;
 478
 479# Debugging, print out the suppressions.
 480if (0) {
 481        print "suppressions:\n";
 482        foreach my $entry (keys %suppress_cc) {
 483                printf "  %-5s -> $suppress_cc{$entry}\n", $entry;
 484        }
 485}
 486
 487my ($repoauthor, $repocommitter);
 488($repoauthor) = Git::ident_person(@repo, 'author');
 489($repocommitter) = Git::ident_person(@repo, 'committer');
 490
 491sub parse_address_line {
 492        return Git::parse_mailboxes($_[0]);
 493}
 494
 495sub split_addrs {
 496        return quotewords('\s*,\s*', 1, @_);
 497}
 498
 499my %aliases;
 500
 501sub parse_sendmail_alias {
 502        local $_ = shift;
 503        if (/"/) {
 504                printf STDERR __("warning: sendmail alias with quotes is not supported: %s\n"), $_;
 505        } elsif (/:include:/) {
 506                printf STDERR __("warning: `:include:` not supported: %s\n"), $_;
 507        } elsif (/[\/|]/) {
 508                printf STDERR __("warning: `/file` or `|pipe` redirection not supported: %s\n"), $_;
 509        } elsif (/^(\S+?)\s*:\s*(.+)$/) {
 510                my ($alias, $addr) = ($1, $2);
 511                $aliases{$alias} = [ split_addrs($addr) ];
 512        } else {
 513                printf STDERR __("warning: sendmail line is not recognized: %s\n"), $_;
 514        }
 515}
 516
 517sub parse_sendmail_aliases {
 518        my $fh = shift;
 519        my $s = '';
 520        while (<$fh>) {
 521                chomp;
 522                next if /^\s*$/ || /^\s*#/;
 523                $s .= $_, next if $s =~ s/\\$// || s/^\s+//;
 524                parse_sendmail_alias($s) if $s;
 525                $s = $_;
 526        }
 527        $s =~ s/\\$//; # silently tolerate stray '\' on last line
 528        parse_sendmail_alias($s) if $s;
 529}
 530
 531my %parse_alias = (
 532        # multiline formats can be supported in the future
 533        mutt => sub { my $fh = shift; while (<$fh>) {
 534                if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) {
 535                        my ($alias, $addr) = ($1, $2);
 536                        $addr =~ s/#.*$//; # mutt allows # comments
 537                        # commas delimit multiple addresses
 538                        my @addr = split_addrs($addr);
 539
 540                        # quotes may be escaped in the file,
 541                        # unescape them so we do not double-escape them later.
 542                        s/\\"/"/g foreach @addr;
 543                        $aliases{$alias} = \@addr
 544                }}},
 545        mailrc => sub { my $fh = shift; while (<$fh>) {
 546                if (/^alias\s+(\S+)\s+(.*?)\s*$/) {
 547                        # spaces delimit multiple addresses
 548                        $aliases{$1} = [ quotewords('\s+', 0, $2) ];
 549                }}},
 550        pine => sub { my $fh = shift; my $f='\t[^\t]*';
 551                for (my $x = ''; defined($x); $x = $_) {
 552                        chomp $x;
 553                        $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/);
 554                        $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next;
 555                        $aliases{$1} = [ split_addrs($2) ];
 556                }},
 557        elm => sub  { my $fh = shift;
 558                      while (<$fh>) {
 559                          if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) {
 560                              my ($alias, $addr) = ($1, $2);
 561                               $aliases{$alias} = [ split_addrs($addr) ];
 562                          }
 563                      } },
 564        sendmail => \&parse_sendmail_aliases,
 565        gnus => sub { my $fh = shift; while (<$fh>) {
 566                if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 567                        $aliases{$1} = [ $2 ];
 568                }}}
 569);
 570
 571if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) {
 572        foreach my $file (@alias_files) {
 573                open my $fh, '<', $file or die "opening $file: $!\n";
 574                $parse_alias{$aliasfiletype}->($fh);
 575                close $fh;
 576        }
 577}
 578
 579if ($dump_aliases) {
 580    print "$_\n" for (sort keys %aliases);
 581    exit(0);
 582}
 583
 584# is_format_patch_arg($f) returns 0 if $f names a patch, or 1 if
 585# $f is a revision list specification to be passed to format-patch.
 586sub is_format_patch_arg {
 587        return unless $repo;
 588        my $f = shift;
 589        try {
 590                $repo->command('rev-parse', '--verify', '--quiet', $f);
 591                if (defined($format_patch)) {
 592                        return $format_patch;
 593                }
 594                die sprintf(__ <<EOF, $f, $f);
 595File '%s' exists but it could also be the range of commits
 596to produce patches for.  Please disambiguate by...
 597
 598    * Saying "./%s" if you mean a file; or
 599    * Giving --format-patch option if you mean a range.
 600EOF
 601        } catch Git::Error::Command with {
 602                # Not a valid revision.  Treat it as a filename.
 603                return 0;
 604        }
 605}
 606
 607# Now that all the defaults are set, process the rest of the command line
 608# arguments and collect up the files that need to be processed.
 609my @rev_list_opts;
 610while (defined(my $f = shift @ARGV)) {
 611        if ($f eq "--") {
 612                push @rev_list_opts, "--", @ARGV;
 613                @ARGV = ();
 614        } elsif (-d $f and !is_format_patch_arg($f)) {
 615                opendir my $dh, $f
 616                        or die sprintf(__("Failed to opendir %s: %s"), $f, $!);
 617
 618                push @files, grep { -f $_ } map { catfile($f, $_) }
 619                                sort readdir $dh;
 620                closedir $dh;
 621        } elsif ((-f $f or -p $f) and !is_format_patch_arg($f)) {
 622                push @files, $f;
 623        } else {
 624                push @rev_list_opts, $f;
 625        }
 626}
 627
 628if (@rev_list_opts) {
 629        die __("Cannot run git format-patch from outside a repository\n")
 630                unless $repo;
 631        push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts);
 632}
 633
 634@files = handle_backup_files(@files);
 635
 636if ($validate) {
 637        foreach my $f (@files) {
 638                unless (-p $f) {
 639                        my $error = validate_patch($f);
 640                        $error and die sprintf(__("fatal: %s: %s\nwarning: no patches were sent\n"),
 641                                                  $f, $error);
 642                }
 643        }
 644}
 645
 646if (@files) {
 647        unless ($quiet) {
 648                print $_,"\n" for (@files);
 649        }
 650} else {
 651        print STDERR __("\nNo patch files specified!\n\n");
 652        usage();
 653}
 654
 655sub get_patch_subject {
 656        my $fn = shift;
 657        open (my $fh, '<', $fn);
 658        while (my $line = <$fh>) {
 659                next unless ($line =~ /^Subject: (.*)$/);
 660                close $fh;
 661                return "GIT: $1\n";
 662        }
 663        close $fh;
 664        die sprintf(__("No subject line in %s?"), $fn);
 665}
 666
 667if ($compose) {
 668        # Note that this does not need to be secure, but we will make a small
 669        # effort to have it be unique
 670        $compose_filename = ($repo ?
 671                tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) :
 672                tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1];
 673        open my $c, ">", $compose_filename
 674                or die sprintf(__("Failed to open for writing %s: %s"), $compose_filename, $!);
 675
 676
 677        my $tpl_sender = $sender || $repoauthor || $repocommitter || '';
 678        my $tpl_subject = $initial_subject || '';
 679        my $tpl_reply_to = $initial_reply_to || '';
 680
 681        print $c <<EOT1, Git::prefix_lines("GIT: ", __ <<EOT2), <<EOT3;
 682From $tpl_sender # This line is ignored.
 683EOT1
 684Lines beginning in "GIT:" will be removed.
 685Consider including an overall diffstat or table of contents
 686for the patch you are writing.
 687
 688Clear the body content if you don't wish to send a summary.
 689EOT2
 690From: $tpl_sender
 691Subject: $tpl_subject
 692In-Reply-To: $tpl_reply_to
 693
 694EOT3
 695        for my $f (@files) {
 696                print $c get_patch_subject($f);
 697        }
 698        close $c;
 699
 700        if ($annotate) {
 701                do_edit($compose_filename, @files);
 702        } else {
 703                do_edit($compose_filename);
 704        }
 705
 706        open my $c2, ">", $compose_filename . ".final"
 707                or die sprintf(__("Failed to open %s.final: %s"), $compose_filename, $!);
 708
 709        open $c, "<", $compose_filename
 710                or die sprintf(__("Failed to open %s: %s"), $compose_filename, $!);
 711
 712        my $need_8bit_cte = file_has_nonascii($compose_filename);
 713        my $in_body = 0;
 714        my $summary_empty = 1;
 715        if (!defined $compose_encoding) {
 716                $compose_encoding = "UTF-8";
 717        }
 718        while(<$c>) {
 719                next if m/^GIT:/;
 720                if ($in_body) {
 721                        $summary_empty = 0 unless (/^\n$/);
 722                } elsif (/^\n$/) {
 723                        $in_body = 1;
 724                        if ($need_8bit_cte) {
 725                                print $c2 "MIME-Version: 1.0\n",
 726                                         "Content-Type: text/plain; ",
 727                                           "charset=$compose_encoding\n",
 728                                         "Content-Transfer-Encoding: 8bit\n";
 729                        }
 730                } elsif (/^MIME-Version:/i) {
 731                        $need_8bit_cte = 0;
 732                } elsif (/^Subject:\s*(.+)\s*$/i) {
 733                        $initial_subject = $1;
 734                        my $subject = $initial_subject;
 735                        $_ = "Subject: " .
 736                                quote_subject($subject, $compose_encoding) .
 737                                "\n";
 738                } elsif (/^In-Reply-To:\s*(.+)\s*$/i) {
 739                        $initial_reply_to = $1;
 740                        next;
 741                } elsif (/^From:\s*(.+)\s*$/i) {
 742                        $sender = $1;
 743                        next;
 744                } elsif (/^(?:To|Cc|Bcc):/i) {
 745                        print __("To/Cc/Bcc fields are not interpreted yet, they have been ignored\n");
 746                        next;
 747                }
 748                print $c2 $_;
 749        }
 750        close $c;
 751        close $c2;
 752
 753        if ($summary_empty) {
 754                print __("Summary email is empty, skipping it\n");
 755                $compose = -1;
 756        }
 757} elsif ($annotate) {
 758        do_edit(@files);
 759}
 760
 761sub ask {
 762        my ($prompt, %arg) = @_;
 763        my $valid_re = $arg{valid_re};
 764        my $default = $arg{default};
 765        my $confirm_only = $arg{confirm_only};
 766        my $resp;
 767        my $i = 0;
 768        return defined $default ? $default : undef
 769                unless defined $term->IN and defined fileno($term->IN) and
 770                       defined $term->OUT and defined fileno($term->OUT);
 771        while ($i++ < 10) {
 772                $resp = $term->readline($prompt);
 773                if (!defined $resp) { # EOF
 774                        print "\n";
 775                        return defined $default ? $default : undef;
 776                }
 777                if ($resp eq '' and defined $default) {
 778                        return $default;
 779                }
 780                if (!defined $valid_re or $resp =~ /$valid_re/) {
 781                        return $resp;
 782                }
 783                if ($confirm_only) {
 784                        my $yesno = $term->readline(
 785                                # TRANSLATORS: please keep [y/N] as is.
 786                                sprintf(__("Are you sure you want to use <%s> [y/N]? "), $resp));
 787                        if (defined $yesno && $yesno =~ /y/i) {
 788                                return $resp;
 789                        }
 790                }
 791        }
 792        return;
 793}
 794
 795my %broken_encoding;
 796
 797sub file_declares_8bit_cte {
 798        my $fn = shift;
 799        open (my $fh, '<', $fn);
 800        while (my $line = <$fh>) {
 801                last if ($line =~ /^$/);
 802                return 1 if ($line =~ /^Content-Transfer-Encoding: .*8bit.*$/);
 803        }
 804        close $fh;
 805        return 0;
 806}
 807
 808foreach my $f (@files) {
 809        next unless (body_or_subject_has_nonascii($f)
 810                     && !file_declares_8bit_cte($f));
 811        $broken_encoding{$f} = 1;
 812}
 813
 814if (!defined $auto_8bit_encoding && scalar %broken_encoding) {
 815        print __("The following files are 8bit, but do not declare " .
 816                 "a Content-Transfer-Encoding.\n");
 817        foreach my $f (sort keys %broken_encoding) {
 818                print "    $f\n";
 819        }
 820        $auto_8bit_encoding = ask(__("Which 8bit encoding should I declare [UTF-8]? "),
 821                                  valid_re => qr/.{4}/, confirm_only => 1,
 822                                  default => "UTF-8");
 823}
 824
 825if (!$force) {
 826        for my $f (@files) {
 827                if (get_patch_subject($f) =~ /\Q*** SUBJECT HERE ***\E/) {
 828                        die sprintf(__("Refusing to send because the patch\n\t%s\n"
 829                                . "has the template subject '*** SUBJECT HERE ***'. "
 830                                . "Pass --force if you really want to send.\n"), $f);
 831                }
 832        }
 833}
 834
 835if (defined $sender) {
 836        $sender =~ s/^\s+|\s+$//g;
 837        ($sender) = expand_aliases($sender);
 838} else {
 839        $sender = $repoauthor || $repocommitter || '';
 840}
 841
 842# $sender could be an already sanitized address
 843# (e.g. sendemail.from could be manually sanitized by user).
 844# But it's a no-op to run sanitize_address on an already sanitized address.
 845$sender = sanitize_address($sender);
 846
 847my $to_whom = __("To whom should the emails be sent (if anyone)?");
 848my $prompting = 0;
 849if (!@initial_to && !defined $to_cmd) {
 850        my $to = ask("$to_whom ",
 851                     default => "",
 852                     valid_re => qr/\@.*\./, confirm_only => 1);
 853        push @initial_to, parse_address_line($to) if defined $to; # sanitized/validated later
 854        $prompting++;
 855}
 856
 857sub expand_aliases {
 858        return map { expand_one_alias($_) } @_;
 859}
 860
 861my %EXPANDED_ALIASES;
 862sub expand_one_alias {
 863        my $alias = shift;
 864        if ($EXPANDED_ALIASES{$alias}) {
 865                die sprintf(__("fatal: alias '%s' expands to itself\n"), $alias);
 866        }
 867        local $EXPANDED_ALIASES{$alias} = 1;
 868        return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 869}
 870
 871@initial_to = process_address_list(@initial_to);
 872@initial_cc = process_address_list(@initial_cc);
 873@bcclist = process_address_list(@bcclist);
 874
 875if ($thread && !defined $initial_reply_to && $prompting) {
 876        $initial_reply_to = ask(
 877                __("Message-ID to be used as In-Reply-To for the first email (if any)? "),
 878                default => "",
 879                valid_re => qr/\@.*\./, confirm_only => 1);
 880}
 881if (defined $initial_reply_to) {
 882        $initial_reply_to =~ s/^\s*<?//;
 883        $initial_reply_to =~ s/>?\s*$//;
 884        $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne '';
 885}
 886
 887if (!defined $smtp_server) {
 888        my @sendmail_paths = qw( /usr/sbin/sendmail /usr/lib/sendmail );
 889        push @sendmail_paths, map {"$_/sendmail"} split /:/, $ENV{PATH};
 890        foreach (@sendmail_paths) {
 891                if (-x $_) {
 892                        $smtp_server = $_;
 893                        last;
 894                }
 895        }
 896        $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 897}
 898
 899if ($compose && $compose > 0) {
 900        @files = ($compose_filename . ".final", @files);
 901}
 902
 903# Variables we set as part of the loop over files
 904our ($message_id, %mail, $subject, $reply_to, $references, $message,
 905        $needs_confirm, $message_num, $ask_default);
 906
 907sub extract_valid_address {
 908        my $address = shift;
 909        my $local_part_regexp = qr/[^<>"\s@]+/;
 910        my $domain_regexp = qr/[^.<>"\s@]+(?:\.[^.<>"\s@]+)+/;
 911
 912        # check for a local address:
 913        return $address if ($address =~ /^($local_part_regexp)$/);
 914
 915        $address =~ s/^\s*<(.*)>\s*$/$1/;
 916        if ($have_email_valid) {
 917                return scalar Email::Valid->address($address);
 918        }
 919
 920        # less robust/correct than the monster regexp in Email::Valid,
 921        # but still does a 99% job, and one less dependency
 922        return $1 if $address =~ /($local_part_regexp\@$domain_regexp)/;
 923        return;
 924}
 925
 926sub extract_valid_address_or_die {
 927        my $address = shift;
 928        $address = extract_valid_address($address);
 929        die sprintf(__("error: unable to extract a valid address from: %s\n"), $address)
 930                if !$address;
 931        return $address;
 932}
 933
 934sub validate_address {
 935        my $address = shift;
 936        while (!extract_valid_address($address)) {
 937                printf STDERR __("error: unable to extract a valid address from: %s\n"), $address;
 938                # TRANSLATORS: Make sure to include [q] [d] [e] in your
 939                # translation. The program will only accept English input
 940                # at this point.
 941                $_ = ask(__("What to do with this address? ([q]uit|[d]rop|[e]dit): "),
 942                        valid_re => qr/^(?:quit|q|drop|d|edit|e)/i,
 943                        default => 'q');
 944                if (/^d/i) {
 945                        return undef;
 946                } elsif (/^q/i) {
 947                        cleanup_compose_files();
 948                        exit(0);
 949                }
 950                $address = ask("$to_whom ",
 951                        default => "",
 952                        valid_re => qr/\@.*\./, confirm_only => 1);
 953        }
 954        return $address;
 955}
 956
 957sub validate_address_list {
 958        return (grep { defined $_ }
 959                map { validate_address($_) } @_);
 960}
 961
 962# Usually don't need to change anything below here.
 963
 964# we make a "fake" message id by taking the current number
 965# of seconds since the beginning of Unix time and tacking on
 966# a random number to the end, in case we are called quicker than
 967# 1 second since the last time we were called.
 968
 969# We'll setup a template for the message id, using the "from" address:
 970
 971my ($message_id_stamp, $message_id_serial);
 972sub make_message_id {
 973        my $uniq;
 974        if (!defined $message_id_stamp) {
 975                $message_id_stamp = strftime("%Y%m%d%H%M%S.$$", gmtime(time));
 976                $message_id_serial = 0;
 977        }
 978        $message_id_serial++;
 979        $uniq = "$message_id_stamp-$message_id_serial";
 980
 981        my $du_part;
 982        for ($sender, $repocommitter, $repoauthor) {
 983                $du_part = extract_valid_address(sanitize_address($_));
 984                last if (defined $du_part and $du_part ne '');
 985        }
 986        if (not defined $du_part or $du_part eq '') {
 987                require Sys::Hostname;
 988                $du_part = 'user@' . Sys::Hostname::hostname();
 989        }
 990        my $message_id_template = "<%s-%s>";
 991        $message_id = sprintf($message_id_template, $uniq, $du_part);
 992        #print "new message id = $message_id\n"; # Was useful for debugging
 993}
 994
 995
 996
 997$time = time - scalar $#files;
 998
 999sub unquote_rfc2047 {
1000        local ($_) = @_;
1001        my $charset;
1002        my $sep = qr/[ \t]+/;
1003        s{$re_encoded_word(?:$sep$re_encoded_word)*}{
1004                my @words = split $sep, $&;
1005                foreach (@words) {
1006                        m/$re_encoded_word/;
1007                        $charset = $1;
1008                        my $encoding = $2;
1009                        my $text = $3;
1010                        if ($encoding eq 'q' || $encoding eq 'Q') {
1011                                $_ = $text;
1012                                s/_/ /g;
1013                                s/=([0-9A-F]{2})/chr(hex($1))/egi;
1014                        } else {
1015                                # other encodings not supported yet
1016                        }
1017                }
1018                join '', @words;
1019        }eg;
1020        return wantarray ? ($_, $charset) : $_;
1021}
1022
1023sub quote_rfc2047 {
1024        local $_ = shift;
1025        my $encoding = shift || 'UTF-8';
1026        s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg;
1027        s/(.*)/=\?$encoding\?q\?$1\?=/;
1028        return $_;
1029}
1030
1031sub is_rfc2047_quoted {
1032        my $s = shift;
1033        length($s) <= 75 &&
1034        $s =~ m/^(?:"[[:ascii:]]*"|$re_encoded_word)$/o;
1035}
1036
1037sub subject_needs_rfc2047_quoting {
1038        my $s = shift;
1039
1040        return ($s =~ /[^[:ascii:]]/) || ($s =~ /=\?/);
1041}
1042
1043sub quote_subject {
1044        local $subject = shift;
1045        my $encoding = shift || 'UTF-8';
1046
1047        if (subject_needs_rfc2047_quoting($subject)) {
1048                return quote_rfc2047($subject, $encoding);
1049        }
1050        return $subject;
1051}
1052
1053# use the simplest quoting being able to handle the recipient
1054sub sanitize_address {
1055        my ($recipient) = @_;
1056
1057        # remove garbage after email address
1058        $recipient =~ s/(.*>).*$/$1/;
1059
1060        my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
1061
1062        if (not $recipient_name) {
1063                return $recipient;
1064        }
1065
1066        # if recipient_name is already quoted, do nothing
1067        if (is_rfc2047_quoted($recipient_name)) {
1068                return $recipient;
1069        }
1070
1071        # remove non-escaped quotes
1072        $recipient_name =~ s/(^|[^\\])"/$1/g;
1073
1074        # rfc2047 is needed if a non-ascii char is included
1075        if ($recipient_name =~ /[^[:ascii:]]/) {
1076                $recipient_name = quote_rfc2047($recipient_name);
1077        }
1078
1079        # double quotes are needed if specials or CTLs are included
1080        elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) {
1081                $recipient_name =~ s/([\\\r])/\\$1/g;
1082                $recipient_name = qq["$recipient_name"];
1083        }
1084
1085        return "$recipient_name $recipient_addr";
1086
1087}
1088
1089sub strip_garbage_one_address {
1090        my ($addr) = @_;
1091        chomp $addr;
1092        if ($addr =~ /^(("[^"]*"|[^"<]*)? *<[^>]*>).*/) {
1093                # "Foo Bar" <foobar@example.com> [possibly garbage here]
1094                # Foo Bar <foobar@example.com> [possibly garbage here]
1095                return $1;
1096        }
1097        if ($addr =~ /^(<[^>]*>).*/) {
1098                # <foo@example.com> [possibly garbage here]
1099                # if garbage contains other addresses, they are ignored.
1100                return $1;
1101        }
1102        if ($addr =~ /^([^"#,\s]*)/) {
1103                # address without quoting: remove anything after the address
1104                return $1;
1105        }
1106        return $addr;
1107}
1108
1109sub sanitize_address_list {
1110        return (map { sanitize_address($_) } @_);
1111}
1112
1113sub process_address_list {
1114        my @addr_list = map { parse_address_line($_) } @_;
1115        @addr_list = expand_aliases(@addr_list);
1116        @addr_list = sanitize_address_list(@addr_list);
1117        @addr_list = validate_address_list(@addr_list);
1118        return @addr_list;
1119}
1120
1121# Returns the local Fully Qualified Domain Name (FQDN) if available.
1122#
1123# Tightly configured MTAa require that a caller sends a real DNS
1124# domain name that corresponds the IP address in the HELO/EHLO
1125# handshake. This is used to verify the connection and prevent
1126# spammers from trying to hide their identity. If the DNS and IP don't
1127# match, the receiveing MTA may deny the connection.
1128#
1129# Here is a deny example of Net::SMTP with the default "localhost.localdomain"
1130#
1131# Net::SMTP=GLOB(0x267ec28)>>> EHLO localhost.localdomain
1132# Net::SMTP=GLOB(0x267ec28)<<< 550 EHLO argument does not match calling host
1133#
1134# This maildomain*() code is based on ideas in Perl library Test::Reporter
1135# /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
1136
1137sub valid_fqdn {
1138        my $domain = shift;
1139        return defined $domain && !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./;
1140}
1141
1142sub maildomain_net {
1143        my $maildomain;
1144
1145        if (eval { require Net::Domain; 1 }) {
1146                my $domain = Net::Domain::domainname();
1147                $maildomain = $domain if valid_fqdn($domain);
1148        }
1149
1150        return $maildomain;
1151}
1152
1153sub maildomain_mta {
1154        my $maildomain;
1155
1156        if (eval { require Net::SMTP; 1 }) {
1157                for my $host (qw(mailhost localhost)) {
1158                        my $smtp = Net::SMTP->new($host);
1159                        if (defined $smtp) {
1160                                my $domain = $smtp->domain;
1161                                $smtp->quit;
1162
1163                                $maildomain = $domain if valid_fqdn($domain);
1164
1165                                last if $maildomain;
1166                        }
1167                }
1168        }
1169
1170        return $maildomain;
1171}
1172
1173sub maildomain {
1174        return maildomain_net() || maildomain_mta() || 'localhost.localdomain';
1175}
1176
1177sub smtp_host_string {
1178        if (defined $smtp_server_port) {
1179                return "$smtp_server:$smtp_server_port";
1180        } else {
1181                return $smtp_server;
1182        }
1183}
1184
1185# Returns 1 if authentication succeeded or was not necessary
1186# (smtp_user was not specified), and 0 otherwise.
1187
1188sub smtp_auth_maybe {
1189        if (!defined $smtp_authuser || $auth) {
1190                return 1;
1191        }
1192
1193        # Workaround AUTH PLAIN/LOGIN interaction defect
1194        # with Authen::SASL::Cyrus
1195        eval {
1196                require Authen::SASL;
1197                Authen::SASL->import(qw(Perl));
1198        };
1199
1200        # Check mechanism naming as defined in:
1201        # https://tools.ietf.org/html/rfc4422#page-8
1202        if ($smtp_auth && $smtp_auth !~ /^(\b[A-Z0-9-_]{1,20}\s*)*$/) {
1203                die "invalid smtp auth: '${smtp_auth}'";
1204        }
1205
1206        # TODO: Authentication may fail not because credentials were
1207        # invalid but due to other reasons, in which we should not
1208        # reject credentials.
1209        $auth = Git::credential({
1210                'protocol' => 'smtp',
1211                'host' => smtp_host_string(),
1212                'username' => $smtp_authuser,
1213                # if there's no password, "git credential fill" will
1214                # give us one, otherwise it'll just pass this one.
1215                'password' => $smtp_authpass
1216        }, sub {
1217                my $cred = shift;
1218
1219                if ($smtp_auth) {
1220                        my $sasl = Authen::SASL->new(
1221                                mechanism => $smtp_auth,
1222                                callback => {
1223                                        user => $cred->{'username'},
1224                                        pass => $cred->{'password'},
1225                                        authname => $cred->{'username'},
1226                                }
1227                        );
1228
1229                        return !!$smtp->auth($sasl);
1230                }
1231
1232                return !!$smtp->auth($cred->{'username'}, $cred->{'password'});
1233        });
1234
1235        return $auth;
1236}
1237
1238sub ssl_verify_params {
1239        eval {
1240                require IO::Socket::SSL;
1241                IO::Socket::SSL->import(qw/SSL_VERIFY_PEER SSL_VERIFY_NONE/);
1242        };
1243        if ($@) {
1244                print STDERR "Not using SSL_VERIFY_PEER due to out-of-date IO::Socket::SSL.\n";
1245                return;
1246        }
1247
1248        if (!defined $smtp_ssl_cert_path) {
1249                # use the OpenSSL defaults
1250                return (SSL_verify_mode => SSL_VERIFY_PEER());
1251        }
1252
1253        if ($smtp_ssl_cert_path eq "") {
1254                return (SSL_verify_mode => SSL_VERIFY_NONE());
1255        } elsif (-d $smtp_ssl_cert_path) {
1256                return (SSL_verify_mode => SSL_VERIFY_PEER(),
1257                        SSL_ca_path => $smtp_ssl_cert_path);
1258        } elsif (-f $smtp_ssl_cert_path) {
1259                return (SSL_verify_mode => SSL_VERIFY_PEER(),
1260                        SSL_ca_file => $smtp_ssl_cert_path);
1261        } else {
1262                die sprintf(__("CA path \"%s\" does not exist"), $smtp_ssl_cert_path);
1263        }
1264}
1265
1266sub file_name_is_absolute {
1267        my ($path) = @_;
1268
1269        # msys does not grok DOS drive-prefixes
1270        if ($^O eq 'msys') {
1271                return ($path =~ m#^/# || $path =~ m#^[a-zA-Z]\:#)
1272        }
1273
1274        require File::Spec::Functions;
1275        return File::Spec::Functions::file_name_is_absolute($path);
1276}
1277
1278# Returns 1 if the message was sent, and 0 otherwise.
1279# In actuality, the whole program dies when there
1280# is an error sending a message.
1281
1282sub send_message {
1283        my @recipients = unique_email_list(@to);
1284        @cc = (grep { my $cc = extract_valid_address_or_die($_);
1285                      not grep { $cc eq $_ || $_ =~ /<\Q${cc}\E>$/ } @recipients
1286                    }
1287               @cc);
1288        my $to = join (",\n\t", @recipients);
1289        @recipients = unique_email_list(@recipients,@cc,@bcclist);
1290        @recipients = (map { extract_valid_address_or_die($_) } @recipients);
1291        my $date = format_2822_time($time++);
1292        my $gitversion = '@@GIT_VERSION@@';
1293        if ($gitversion =~ m/..GIT_VERSION../) {
1294            $gitversion = Git::version();
1295        }
1296
1297        my $cc = join(",\n\t", unique_email_list(@cc));
1298        my $ccline = "";
1299        if ($cc ne '') {
1300                $ccline = "\nCc: $cc";
1301        }
1302        make_message_id() unless defined($message_id);
1303
1304        my $header = "From: $sender
1305To: $to${ccline}
1306Subject: $subject
1307Date: $date
1308Message-Id: $message_id
1309";
1310        if ($use_xmailer) {
1311                $header .= "X-Mailer: git-send-email $gitversion\n";
1312        }
1313        if ($reply_to) {
1314
1315                $header .= "In-Reply-To: $reply_to\n";
1316                $header .= "References: $references\n";
1317        }
1318        if (@xh) {
1319                $header .= join("\n", @xh) . "\n";
1320        }
1321
1322        my @sendmail_parameters = ('-i', @recipients);
1323        my $raw_from = $sender;
1324        if (defined $envelope_sender && $envelope_sender ne "auto") {
1325                $raw_from = $envelope_sender;
1326        }
1327        $raw_from = extract_valid_address($raw_from);
1328        unshift (@sendmail_parameters,
1329                        '-f', $raw_from) if(defined $envelope_sender);
1330
1331        if ($needs_confirm && !$dry_run) {
1332                print "\n$header\n";
1333                if ($needs_confirm eq "inform") {
1334                        $confirm_unconfigured = 0; # squelch this message for the rest of this run
1335                        $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation
1336                        print __ <<EOF ;
1337    The Cc list above has been expanded by additional
1338    addresses found in the patch commit message. By default
1339    send-email prompts before sending whenever this occurs.
1340    This behavior is controlled by the sendemail.confirm
1341    configuration setting.
1342
1343    For additional information, run 'git send-email --help'.
1344    To retain the current behavior, but squelch this message,
1345    run 'git config --global sendemail.confirm auto'.
1346
1347EOF
1348                }
1349                # TRANSLATORS: Make sure to include [y] [n] [q] [a] in your
1350                # translation. The program will only accept English input
1351                # at this point.
1352                $_ = ask(__("Send this email? ([y]es|[n]o|[q]uit|[a]ll): "),
1353                         valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
1354                         default => $ask_default);
1355                die __("Send this email reply required") unless defined $_;
1356                if (/^n/i) {
1357                        return 0;
1358                } elsif (/^q/i) {
1359                        cleanup_compose_files();
1360                        exit(0);
1361                } elsif (/^a/i) {
1362                        $confirm = 'never';
1363                }
1364        }
1365
1366        unshift (@sendmail_parameters, @smtp_server_options);
1367
1368        if ($dry_run) {
1369                # We don't want to send the email.
1370        } elsif (file_name_is_absolute($smtp_server)) {
1371                my $pid = open my $sm, '|-';
1372                defined $pid or die $!;
1373                if (!$pid) {
1374                        exec($smtp_server, @sendmail_parameters) or die $!;
1375                }
1376                print $sm "$header\n$message";
1377                close $sm or die $!;
1378        } else {
1379
1380                if (!defined $smtp_server) {
1381                        die __("The required SMTP server is not properly defined.")
1382                }
1383
1384                require Net::SMTP;
1385                my $use_net_smtp_ssl = version->parse($Net::SMTP::VERSION) < version->parse("2.34");
1386                $smtp_domain ||= maildomain();
1387
1388                if ($smtp_encryption eq 'ssl') {
1389                        $smtp_server_port ||= 465; # ssmtp
1390                        require IO::Socket::SSL;
1391
1392                        # Suppress "variable accessed once" warning.
1393                        {
1394                                no warnings 'once';
1395                                $IO::Socket::SSL::DEBUG = 1;
1396                        }
1397
1398                        # Net::SMTP::SSL->new() does not forward any SSL options
1399                        IO::Socket::SSL::set_client_defaults(
1400                                ssl_verify_params());
1401
1402                        if ($use_net_smtp_ssl) {
1403                                require Net::SMTP::SSL;
1404                                $smtp ||= Net::SMTP::SSL->new($smtp_server,
1405                                                              Hello => $smtp_domain,
1406                                                              Port => $smtp_server_port,
1407                                                              Debug => $debug_net_smtp);
1408                        }
1409                        else {
1410                                $smtp ||= Net::SMTP->new($smtp_server,
1411                                                         Hello => $smtp_domain,
1412                                                         Port => $smtp_server_port,
1413                                                         Debug => $debug_net_smtp,
1414                                                         SSL => 1);
1415                        }
1416                }
1417                else {
1418                        $smtp_server_port ||= 25;
1419                        $smtp ||= Net::SMTP->new($smtp_server,
1420                                                 Hello => $smtp_domain,
1421                                                 Debug => $debug_net_smtp,
1422                                                 Port => $smtp_server_port);
1423                        if ($smtp_encryption eq 'tls' && $smtp) {
1424                                if ($use_net_smtp_ssl) {
1425                                        $smtp->command('STARTTLS');
1426                                        $smtp->response();
1427                                        if ($smtp->code != 220) {
1428                                                die sprintf(__("Server does not support STARTTLS! %s"), $smtp->message);
1429                                        }
1430                                        require Net::SMTP::SSL;
1431                                        $smtp = Net::SMTP::SSL->start_SSL($smtp,
1432                                                                          ssl_verify_params())
1433                                                or die sprintf(__("STARTTLS failed! %s"), IO::Socket::SSL::errstr());
1434                                }
1435                                else {
1436                                        $smtp->starttls(ssl_verify_params())
1437                                                or die sprintf(__("STARTTLS failed! %s"), IO::Socket::SSL::errstr());
1438                                }
1439                                $smtp_encryption = '';
1440                                # Send EHLO again to receive fresh
1441                                # supported commands
1442                                $smtp->hello($smtp_domain);
1443                        }
1444                }
1445
1446                if (!$smtp) {
1447                        die __("Unable to initialize SMTP properly. Check config and use --smtp-debug."),
1448                            " VALUES: server=$smtp_server ",
1449                            "encryption=$smtp_encryption ",
1450                            "hello=$smtp_domain",
1451                            defined $smtp_server_port ? " port=$smtp_server_port" : "";
1452                }
1453
1454                smtp_auth_maybe or die $smtp->message;
1455
1456                $smtp->mail( $raw_from ) or die $smtp->message;
1457                $smtp->to( @recipients ) or die $smtp->message;
1458                $smtp->data or die $smtp->message;
1459                $smtp->datasend("$header\n") or die $smtp->message;
1460                my @lines = split /^/, $message;
1461                foreach my $line (@lines) {
1462                        $smtp->datasend("$line") or die $smtp->message;
1463                }
1464                $smtp->dataend() or die $smtp->message;
1465                $smtp->code =~ /250|200/ or die sprintf(__("Failed to send %s\n"), $subject).$smtp->message;
1466        }
1467        if ($quiet) {
1468                printf($dry_run ? __("Dry-Sent %s\n") : __("Sent %s\n"), $subject);
1469        } else {
1470                print($dry_run ? __("Dry-OK. Log says:\n") : __("OK. Log says:\n"));
1471                if (!file_name_is_absolute($smtp_server)) {
1472                        print "Server: $smtp_server\n";
1473                        print "MAIL FROM:<$raw_from>\n";
1474                        foreach my $entry (@recipients) {
1475                            print "RCPT TO:<$entry>\n";
1476                        }
1477                } else {
1478                        print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n";
1479                }
1480                print $header, "\n";
1481                if ($smtp) {
1482                        print __("Result: "), $smtp->code, ' ',
1483                                ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
1484                } else {
1485                        print __("Result: OK\n");
1486                }
1487        }
1488
1489        return 1;
1490}
1491
1492$reply_to = $initial_reply_to;
1493$references = $initial_reply_to || '';
1494$subject = $initial_subject;
1495$message_num = 0;
1496
1497foreach my $t (@files) {
1498        open my $fh, "<", $t or die sprintf(__("can't open file %s"), $t);
1499
1500        my $author = undef;
1501        my $sauthor = undef;
1502        my $author_encoding;
1503        my $has_content_type;
1504        my $body_encoding;
1505        my $xfer_encoding;
1506        my $has_mime_version;
1507        @to = ();
1508        @cc = ();
1509        @xh = ();
1510        my $input_format = undef;
1511        my @header = ();
1512        $message = "";
1513        $message_num++;
1514        # First unfold multiline header fields
1515        while(<$fh>) {
1516                last if /^\s*$/;
1517                if (/^\s+\S/ and @header) {
1518                        chomp($header[$#header]);
1519                        s/^\s+/ /;
1520                        $header[$#header] .= $_;
1521            } else {
1522                        push(@header, $_);
1523                }
1524        }
1525        # Now parse the header
1526        foreach(@header) {
1527                if (/^From /) {
1528                        $input_format = 'mbox';
1529                        next;
1530                }
1531                chomp;
1532                if (!defined $input_format && /^[-A-Za-z]+:\s/) {
1533                        $input_format = 'mbox';
1534                }
1535
1536                if (defined $input_format && $input_format eq 'mbox') {
1537                        if (/^Subject:\s+(.*)$/i) {
1538                                $subject = $1;
1539                        }
1540                        elsif (/^From:\s+(.*)$/i) {
1541                                ($author, $author_encoding) = unquote_rfc2047($1);
1542                                $sauthor = sanitize_address($author);
1543                                next if $suppress_cc{'author'};
1544                                next if $suppress_cc{'self'} and $sauthor eq $sender;
1545                                printf(__("(mbox) Adding cc: %s from line '%s'\n"),
1546                                        $1, $_) unless $quiet;
1547                                push @cc, $1;
1548                        }
1549                        elsif (/^To:\s+(.*)$/i) {
1550                                foreach my $addr (parse_address_line($1)) {
1551                                        printf(__("(mbox) Adding to: %s from line '%s'\n"),
1552                                                $addr, $_) unless $quiet;
1553                                        push @to, $addr;
1554                                }
1555                        }
1556                        elsif (/^Cc:\s+(.*)$/i) {
1557                                foreach my $addr (parse_address_line($1)) {
1558                                        my $qaddr = unquote_rfc2047($addr);
1559                                        my $saddr = sanitize_address($qaddr);
1560                                        if ($saddr eq $sender) {
1561                                                next if ($suppress_cc{'self'});
1562                                        } else {
1563                                                next if ($suppress_cc{'cc'});
1564                                        }
1565                                        printf(__("(mbox) Adding cc: %s from line '%s'\n"),
1566                                                $addr, $_) unless $quiet;
1567                                        push @cc, $addr;
1568                                }
1569                        }
1570                        elsif (/^Content-type:/i) {
1571                                $has_content_type = 1;
1572                                if (/charset="?([^ "]+)/) {
1573                                        $body_encoding = $1;
1574                                }
1575                                push @xh, $_;
1576                        }
1577                        elsif (/^MIME-Version/i) {
1578                                $has_mime_version = 1;
1579                                push @xh, $_;
1580                        }
1581                        elsif (/^Message-Id: (.*)/i) {
1582                                $message_id = $1;
1583                        }
1584                        elsif (/^Content-Transfer-Encoding: (.*)/i) {
1585                                $xfer_encoding = $1 if not defined $xfer_encoding;
1586                        }
1587                        elsif (!/^Date:\s/i && /^[-A-Za-z]+:\s+\S/) {
1588                                push @xh, $_;
1589                        }
1590
1591                } else {
1592                        # In the traditional
1593                        # "send lots of email" format,
1594                        # line 1 = cc
1595                        # line 2 = subject
1596                        # So let's support that, too.
1597                        $input_format = 'lots';
1598                        if (@cc == 0 && !$suppress_cc{'cc'}) {
1599                                printf(__("(non-mbox) Adding cc: %s from line '%s'\n"),
1600                                        $_, $_) unless $quiet;
1601                                push @cc, $_;
1602                        } elsif (!defined $subject) {
1603                                $subject = $_;
1604                        }
1605                }
1606        }
1607        # Now parse the message body
1608        while(<$fh>) {
1609                $message .=  $_;
1610                if (/^(Signed-off-by|Cc): (.*)/i) {
1611                        chomp;
1612                        my ($what, $c) = ($1, $2);
1613                        # strip garbage for the address we'll use:
1614                        $c = strip_garbage_one_address($c);
1615                        # sanitize a bit more to decide whether to suppress the address:
1616                        my $sc = sanitize_address($c);
1617                        if ($sc eq $sender) {
1618                                next if ($suppress_cc{'self'});
1619                        } else {
1620                                next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
1621                                next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
1622                        }
1623                        push @cc, $c;
1624                        printf(__("(body) Adding cc: %s from line '%s'\n"),
1625                                $c, $_) unless $quiet;
1626                }
1627        }
1628        close $fh;
1629
1630        push @to, recipients_cmd("to-cmd", "to", $to_cmd, $t)
1631                if defined $to_cmd;
1632        push @cc, recipients_cmd("cc-cmd", "cc", $cc_cmd, $t)
1633                if defined $cc_cmd && !$suppress_cc{'cccmd'};
1634
1635        if ($broken_encoding{$t} && !$has_content_type) {
1636                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1637                $has_content_type = 1;
1638                push @xh, "Content-Type: text/plain; charset=$auto_8bit_encoding";
1639                $body_encoding = $auto_8bit_encoding;
1640        }
1641
1642        if ($broken_encoding{$t} && !is_rfc2047_quoted($subject)) {
1643                $subject = quote_subject($subject, $auto_8bit_encoding);
1644        }
1645
1646        if (defined $sauthor and $sauthor ne $sender) {
1647                $message = "From: $author\n\n$message";
1648                if (defined $author_encoding) {
1649                        if ($has_content_type) {
1650                                if ($body_encoding eq $author_encoding) {
1651                                        # ok, we already have the right encoding
1652                                }
1653                                else {
1654                                        # uh oh, we should re-encode
1655                                }
1656                        }
1657                        else {
1658                                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1659                                $has_content_type = 1;
1660                                push @xh,
1661                                  "Content-Type: text/plain; charset=$author_encoding";
1662                        }
1663                }
1664        }
1665        if (defined $target_xfer_encoding) {
1666                $xfer_encoding = '8bit' if not defined $xfer_encoding;
1667                $message = apply_transfer_encoding(
1668                        $message, $xfer_encoding, $target_xfer_encoding);
1669                $xfer_encoding = $target_xfer_encoding;
1670        }
1671        if (defined $xfer_encoding) {
1672                push @xh, "Content-Transfer-Encoding: $xfer_encoding";
1673        }
1674        if (defined $xfer_encoding or $has_content_type) {
1675                unshift @xh, 'MIME-Version: 1.0' unless $has_mime_version;
1676        }
1677
1678        $needs_confirm = (
1679                $confirm eq "always" or
1680                ($confirm =~ /^(?:auto|cc)$/ && @cc) or
1681                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
1682        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
1683
1684        @to = process_address_list(@to);
1685        @cc = process_address_list(@cc);
1686
1687        @to = (@initial_to, @to);
1688        @cc = (@initial_cc, @cc);
1689
1690        if ($message_num == 1) {
1691                if (defined $cover_cc and $cover_cc) {
1692                        @initial_cc = @cc;
1693                }
1694                if (defined $cover_to and $cover_to) {
1695                        @initial_to = @to;
1696                }
1697        }
1698
1699        my $message_was_sent = send_message();
1700
1701        # set up for the next message
1702        if ($thread && $message_was_sent &&
1703                ($chain_reply_to || !defined $reply_to || length($reply_to) == 0 ||
1704                $message_num == 1)) {
1705                $reply_to = $message_id;
1706                if (length $references > 0) {
1707                        $references .= "\n $message_id";
1708                } else {
1709                        $references = "$message_id";
1710                }
1711        }
1712        $message_id = undef;
1713        $num_sent++;
1714        if (defined $batch_size && $num_sent == $batch_size) {
1715                $num_sent = 0;
1716                $smtp->quit if defined $smtp;
1717                undef $smtp;
1718                undef $auth;
1719                sleep($relogin_delay) if defined $relogin_delay;
1720        }
1721}
1722
1723# Execute a command (e.g. $to_cmd) to get a list of email addresses
1724# and return a results array
1725sub recipients_cmd {
1726        my ($prefix, $what, $cmd, $file) = @_;
1727
1728        my @addresses = ();
1729        open my $fh, "-|", "$cmd \Q$file\E"
1730            or die sprintf(__("(%s) Could not execute '%s'"), $prefix, $cmd);
1731        while (my $address = <$fh>) {
1732                $address =~ s/^\s*//g;
1733                $address =~ s/\s*$//g;
1734                $address = sanitize_address($address);
1735                next if ($address eq $sender and $suppress_cc{'self'});
1736                push @addresses, $address;
1737                printf(__("(%s) Adding %s: %s from: '%s'\n"),
1738                       $prefix, $what, $address, $cmd) unless $quiet;
1739                }
1740        close $fh
1741            or die sprintf(__("(%s) failed to close pipe to '%s'"), $prefix, $cmd);
1742        return @addresses;
1743}
1744
1745cleanup_compose_files();
1746
1747sub cleanup_compose_files {
1748        unlink($compose_filename, $compose_filename . ".final") if $compose;
1749}
1750
1751$smtp->quit if $smtp;
1752
1753sub apply_transfer_encoding {
1754        my $message = shift;
1755        my $from = shift;
1756        my $to = shift;
1757
1758        return $message if ($from eq $to and $from ne '7bit');
1759
1760        require MIME::QuotedPrint;
1761        require MIME::Base64;
1762
1763        $message = MIME::QuotedPrint::decode($message)
1764                if ($from eq 'quoted-printable');
1765        $message = MIME::Base64::decode($message)
1766                if ($from eq 'base64');
1767
1768        die __("cannot send message as 7bit")
1769                if ($to eq '7bit' and $message =~ /[^[:ascii:]]/);
1770        return $message
1771                if ($to eq '7bit' or $to eq '8bit');
1772        return MIME::QuotedPrint::encode($message, "\n", 0)
1773                if ($to eq 'quoted-printable');
1774        return MIME::Base64::encode($message, "\n")
1775                if ($to eq 'base64');
1776        die __("invalid transfer encoding");
1777}
1778
1779sub unique_email_list {
1780        my %seen;
1781        my @emails;
1782
1783        foreach my $entry (@_) {
1784                my $clean = extract_valid_address_or_die($entry);
1785                $seen{$clean} ||= 0;
1786                next if $seen{$clean}++;
1787                push @emails, $entry;
1788        }
1789        return @emails;
1790}
1791
1792sub validate_patch {
1793        my $fn = shift;
1794
1795        if ($repo) {
1796                my $validate_hook = catfile(catdir($repo->repo_path(), 'hooks'),
1797                                            'sendemail-validate');
1798                my $hook_error;
1799                if (-x $validate_hook) {
1800                        my $target = abs_path($fn);
1801                        # The hook needs a correct cwd and GIT_DIR.
1802                        my $cwd_save = cwd();
1803                        chdir($repo->wc_path() or $repo->repo_path())
1804                                or die("chdir: $!");
1805                        local $ENV{"GIT_DIR"} = $repo->repo_path();
1806                        $hook_error = "rejected by sendemail-validate hook"
1807                                if system($validate_hook, $target);
1808                        chdir($cwd_save) or die("chdir: $!");
1809                }
1810                return $hook_error if $hook_error;
1811        }
1812
1813        open(my $fh, '<', $fn)
1814                or die sprintf(__("unable to open %s: %s\n"), $fn, $!);
1815        while (my $line = <$fh>) {
1816                if (length($line) > 998) {
1817                        return sprintf(__("%s: patch contains a line longer than 998 characters"), $.);
1818                }
1819        }
1820        return;
1821}
1822
1823sub handle_backup {
1824        my ($last, $lastlen, $file, $known_suffix) = @_;
1825        my ($suffix, $skip);
1826
1827        $skip = 0;
1828        if (defined $last &&
1829            ($lastlen < length($file)) &&
1830            (substr($file, 0, $lastlen) eq $last) &&
1831            ($suffix = substr($file, $lastlen)) !~ /^[a-z0-9]/i) {
1832                if (defined $known_suffix && $suffix eq $known_suffix) {
1833                        printf(__("Skipping %s with backup suffix '%s'.\n"), $file, $known_suffix);
1834                        $skip = 1;
1835                } else {
1836                        # TRANSLATORS: please keep "[y|N]" as is.
1837                        my $answer = ask(sprintf(__("Do you really want to send %s? [y|N]: "), $file),
1838                                         valid_re => qr/^(?:y|n)/i,
1839                                         default => 'n');
1840                        $skip = ($answer ne 'y');
1841                        if ($skip) {
1842                                $known_suffix = $suffix;
1843                        }
1844                }
1845        }
1846        return ($skip, $known_suffix);
1847}
1848
1849sub handle_backup_files {
1850        my @file = @_;
1851        my ($last, $lastlen, $known_suffix, $skip, @result);
1852        for my $file (@file) {
1853                ($skip, $known_suffix) = handle_backup($last, $lastlen,
1854                                                       $file, $known_suffix);
1855                push @result, $file unless $skip;
1856                $last = $file;
1857                $lastlen = length($file);
1858        }
1859        return @result;
1860}
1861
1862sub file_has_nonascii {
1863        my $fn = shift;
1864        open(my $fh, '<', $fn)
1865                or die sprintf(__("unable to open %s: %s\n"), $fn, $!);
1866        while (my $line = <$fh>) {
1867                return 1 if $line =~ /[^[:ascii:]]/;
1868        }
1869        return 0;
1870}
1871
1872sub body_or_subject_has_nonascii {
1873        my $fn = shift;
1874        open(my $fh, '<', $fn)
1875                or die sprintf(__("unable to open %s: %s\n"), $fn, $!);
1876        while (my $line = <$fh>) {
1877                last if $line =~ /^$/;
1878                return 1 if $line =~ /^Subject.*[^[:ascii:]]/;
1879        }
1880        while (my $line = <$fh>) {
1881                return 1 if $line =~ /[^[:ascii:]]/;
1882        }
1883        return 0;
1884}