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Diffstat (limited to 'git-send-email.perl')
| -rwxr-xr-x | git-send-email.perl | 1560 |
1 files changed, 1560 insertions, 0 deletions
diff --git a/git-send-email.perl b/git-send-email.perl new file mode 100755 index 0000000000..3782c3b0cb --- /dev/null +++ b/git-send-email.perl @@ -0,0 +1,1560 @@ +#!/usr/bin/perl +# +# Copyright 2002,2005 Greg Kroah-Hartman <greg@kroah.com> +# Copyright 2005 Ryan Anderson <ryan@michonline.com> +# +# GPL v2 (See COPYING) +# +# Ported to support git "mbox" format files by Ryan Anderson <ryan@michonline.com> +# +# Sends a collection of emails to the given email addresses, disturbingly fast. +# +# Supports two formats: +# 1. mbox format files (ignoring most headers and MIME formatting - this is designed for sending patches) +# 2. The original format support by Greg's script: +# first line of the message is who to CC, +# and second line is the subject of the message. +# + +use 5.008; +use strict; +use warnings; +use Term::ReadLine; +use Getopt::Long; +use Text::ParseWords; +use Data::Dumper; +use Term::ANSIColor; +use File::Temp qw/ tempdir tempfile /; +use File::Spec::Functions qw(catfile); +use Error qw(:try); +use Git; + +Getopt::Long::Configure qw/ pass_through /; + +package FakeTerm; +sub new { + my ($class, $reason) = @_; + return bless \$reason, shift; +} +sub readline { + my $self = shift; + die "Cannot use readline on FakeTerm: $$self"; +} +package main; + + +sub usage { + print <<EOT; +git send-email [options] <file | directory | rev-list options > + + Composing: + --from <str> * Email From: + --[no-]to <str> * Email To: + --[no-]cc <str> * Email Cc: + --[no-]bcc <str> * Email Bcc: + --subject <str> * Email "Subject:" + --in-reply-to <str> * Email "In-Reply-To:" + --[no-]annotate * Review each patch that will be sent in an editor. + --compose * Open an editor for introduction. + --compose-encoding <str> * Encoding to assume for introduction. + --8bit-encoding <str> * Encoding to assume 8bit mails if undeclared + + Sending: + --envelope-sender <str> * Email envelope sender. + --smtp-server <str:int> * Outgoing SMTP server to use. The port + is optional. Default 'localhost'. + --smtp-server-option <str> * Outgoing SMTP server option to use. + --smtp-server-port <int> * Outgoing SMTP server port. + --smtp-user <str> * Username for SMTP-AUTH. + --smtp-pass <str> * Password for SMTP-AUTH; not necessary. + --smtp-encryption <str> * tls or ssl; anything else disables. + --smtp-ssl * Deprecated. Use '--smtp-encryption ssl'. + --smtp-ssl-cert-path <str> * Path to ca-certificates (either directory or file). + Pass an empty string to disable certificate + verification. + --smtp-domain <str> * The domain name sent to HELO/EHLO handshake + --smtp-debug <0|1> * Disable, enable Net::SMTP debug. + + Automating: + --identity <str> * Use the sendemail.<id> options. + --to-cmd <str> * Email To: via `<str> \$patch_path` + --cc-cmd <str> * Email Cc: via `<str> \$patch_path` + --suppress-cc <str> * author, self, sob, cc, cccmd, body, bodycc, all. + --[no-]signed-off-by-cc * Send to Signed-off-by: addresses. Default on. + --[no-]suppress-from * Send to self. Default off. + --[no-]chain-reply-to * Chain In-Reply-To: fields. Default off. + --[no-]thread * Use In-Reply-To: field. Default on. + + Administering: + --confirm <str> * Confirm recipients before sending; + auto, cc, compose, always, or never. + --quiet * Output one line of info per email. + --dry-run * Don't actually send the emails. + --[no-]validate * Perform patch sanity checks. Default on. + --[no-]format-patch * understand any non optional arguments as + `git format-patch` ones. + --force * Send even if safety checks would prevent it. + +EOT + exit(1); +} + +# most mail servers generate the Date: header, but not all... +sub format_2822_time { + my ($time) = @_; + my @localtm = localtime($time); + my @gmttm = gmtime($time); + my $localmin = $localtm[1] + $localtm[2] * 60; + my $gmtmin = $gmttm[1] + $gmttm[2] * 60; + if ($localtm[0] != $gmttm[0]) { + die "local zone differs from GMT by a non-minute interval\n"; + } + if ((($gmttm[6] + 1) % 7) == $localtm[6]) { + $localmin += 1440; + } elsif ((($gmttm[6] - 1) % 7) == $localtm[6]) { + $localmin -= 1440; + } elsif ($gmttm[6] != $localtm[6]) { + die "local time offset greater than or equal to 24 hours\n"; + } + my $offset = $localmin - $gmtmin; + my $offhour = $offset / 60; + my $offmin = abs($offset % 60); + if (abs($offhour) >= 24) { + die ("local time offset greater than or equal to 24 hours\n"); + } + + return sprintf("%s, %2d %s %d %02d:%02d:%02d %s%02d%02d", + qw(Sun Mon Tue Wed Thu Fri Sat)[$localtm[6]], + $localtm[3], + qw(Jan Feb Mar Apr May Jun + Jul Aug Sep Oct Nov Dec)[$localtm[4]], + $localtm[5]+1900, + $localtm[2], + $localtm[1], + $localtm[0], + ($offset >= 0) ? '+' : '-', + abs($offhour), + $offmin, + ); +} + +my $have_email_valid = eval { require Email::Valid; 1 }; +my $have_mail_address = eval { require Mail::Address; 1 }; +my $smtp; +my $auth; + +# Variables we fill in automatically, or via prompting: +my (@to,$no_to,@initial_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh, + $initial_reply_to,$initial_subject,@files, + $author,$sender,$smtp_authpass,$annotate,$compose,$time); + +my $envelope_sender; + +# Example reply to: +#$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>'; + +my $repo = eval { Git->repository() }; +my @repo = $repo ? ($repo) : (); +my $term = eval { + $ENV{"GIT_SEND_EMAIL_NOTTY"} + ? new Term::ReadLine 'git-send-email', \*STDIN, \*STDOUT + : new Term::ReadLine 'git-send-email'; +}; +if ($@) { + $term = new FakeTerm "$@: going non-interactive"; +} + +# Behavior modification variables +my ($quiet, $dry_run) = (0, 0); +my $format_patch; +my $compose_filename; +my $force = 0; + +# Handle interactive edition of files. +my $multiedit; +my $editor; + +sub do_edit { + if (!defined($editor)) { + $editor = Git::command_oneline('var', 'GIT_EDITOR'); + } + if (defined($multiedit) && !$multiedit) { + map { + system('sh', '-c', $editor.' "$@"', $editor, $_); + if (($? & 127) || ($? >> 8)) { + die("the editor exited uncleanly, aborting everything"); + } + } @_; + } else { + system('sh', '-c', $editor.' "$@"', $editor, @_); + if (($? & 127) || ($? >> 8)) { + die("the editor exited uncleanly, aborting everything"); + } + } +} + +# Variables with corresponding config settings +my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc); +my ($to_cmd, $cc_cmd); +my ($smtp_server, $smtp_server_port, @smtp_server_options); +my ($smtp_authuser, $smtp_encryption, $smtp_ssl_cert_path); +my ($identity, $aliasfiletype, @alias_files, $smtp_domain); +my ($validate, $confirm); +my (@suppress_cc); +my ($auto_8bit_encoding); +my ($compose_encoding); + +my ($debug_net_smtp) = 0; # Net::SMTP, see send_message() + +my %config_bool_settings = ( + "thread" => [\$thread, 1], + "chainreplyto" => [\$chain_reply_to, 0], + "suppressfrom" => [\$suppress_from, undef], + "signedoffbycc" => [\$signed_off_by_cc, undef], + "signedoffcc" => [\$signed_off_by_cc, undef], # Deprecated + "validate" => [\$validate, 1], + "multiedit" => [\$multiedit, undef], + "annotate" => [\$annotate, undef] +); + +my %config_settings = ( + "smtpserver" => \$smtp_server, + "smtpserverport" => \$smtp_server_port, + "smtpserveroption" => \@smtp_server_options, + "smtpuser" => \$smtp_authuser, + "smtppass" => \$smtp_authpass, + "smtpsslcertpath" => \$smtp_ssl_cert_path, + "smtpdomain" => \$smtp_domain, + "to" => \@initial_to, + "tocmd" => \$to_cmd, + "cc" => \@initial_cc, + "cccmd" => \$cc_cmd, + "aliasfiletype" => \$aliasfiletype, + "bcc" => \@bcclist, + "suppresscc" => \@suppress_cc, + "envelopesender" => \$envelope_sender, + "confirm" => \$confirm, + "from" => \$sender, + "assume8bitencoding" => \$auto_8bit_encoding, + "composeencoding" => \$compose_encoding, +); + +my %config_path_settings = ( + "aliasesfile" => \@alias_files, +); + +# Handle Uncouth Termination +sub signal_handler { + + # Make text normal + print color("reset"), "\n"; + + # SMTP password masked + system "stty echo"; + + # tmp files from --compose + if (defined $compose_filename) { + if (-e $compose_filename) { + print "'$compose_filename' contains an intermediate version of the email you were composing.\n"; + } + if (-e ($compose_filename . ".final")) { + print "'$compose_filename.final' contains the composed email.\n" + } + } + + exit; +}; + +$SIG{TERM} = \&signal_handler; +$SIG{INT} = \&signal_handler; + +# Begin by accumulating all the variables (defined above), that we will end up +# needing, first, from the command line: + +my $help; +my $rc = GetOptions("h" => \$help, + "sender|from=s" => \$sender, + "in-reply-to=s" => \$initial_reply_to, + "subject=s" => \$initial_subject, + "to=s" => \@initial_to, + "to-cmd=s" => \$to_cmd, + "no-to" => \$no_to, + "cc=s" => \@initial_cc, + "no-cc" => \$no_cc, + "bcc=s" => \@bcclist, + "no-bcc" => \$no_bcc, + "chain-reply-to!" => \$chain_reply_to, + "smtp-server=s" => \$smtp_server, + "smtp-server-option=s" => \@smtp_server_options, + "smtp-server-port=s" => \$smtp_server_port, + "smtp-user=s" => \$smtp_authuser, + "smtp-pass:s" => \$smtp_authpass, + "smtp-ssl" => sub { $smtp_encryption = 'ssl' }, + "smtp-encryption=s" => \$smtp_encryption, + "smtp-ssl-cert-path" => \$smtp_ssl_cert_path, + "smtp-debug:i" => \$debug_net_smtp, + "smtp-domain:s" => \$smtp_domain, + "identity=s" => \$identity, + "annotate!" => \$annotate, + "compose" => \$compose, + "quiet" => \$quiet, + "cc-cmd=s" => \$cc_cmd, + "suppress-from!" => \$suppress_from, + "suppress-cc=s" => \@suppress_cc, + "signed-off-cc|signed-off-by-cc!" => \$signed_off_by_cc, + "confirm=s" => \$confirm, + "dry-run" => \$dry_run, + "envelope-sender=s" => \$envelope_sender, + "thread!" => \$thread, + "validate!" => \$validate, + "format-patch!" => \$format_patch, + "8bit-encoding=s" => \$auto_8bit_encoding, + "compose-encoding=s" => \$compose_encoding, + "force" => \$force, + ); + +usage() if $help; +unless ($rc) { + usage(); +} + +die "Cannot run git format-patch from outside a repository\n" + if $format_patch and not $repo; + +# Now, let's fill any that aren't set in with defaults: + +sub read_config { + my ($prefix) = @_; + + foreach my $setting (keys %config_bool_settings) { + my $target = $config_bool_settings{$setting}->[0]; + $$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target); + } + + foreach my $setting (keys %config_path_settings) { + my $target = $config_path_settings{$setting}; + if (ref($target) eq "ARRAY") { + unless (@$target) { + my @values = Git::config_path(@repo, "$prefix.$setting"); + @$target = @values if (@values && defined $values[0]); + } + } + else { + $$target = Git::config_path(@repo, "$prefix.$setting") unless (defined $$target); + } + } + + foreach my $setting (keys %config_settings) { + my $target = $config_settings{$setting}; + next if $setting eq "to" and defined $no_to; + next if $setting eq "cc" and defined $no_cc; + next if $setting eq "bcc" and defined $no_bcc; + if (ref($target) eq "ARRAY") { + unless (@$target) { + my @values = Git::config(@repo, "$prefix.$setting"); + @$target = @values if (@values && defined $values[0]); + } + } + else { + $$target = Git::config(@repo, "$prefix.$setting") unless (defined $$target); + } + } + + if (!defined $smtp_encryption) { + my $enc = Git::config(@repo, "$prefix.smtpencryption"); + if (defined $enc) { + $smtp_encryption = $enc; + } elsif (Git::config_bool(@repo, "$prefix.smtpssl")) { + $smtp_encryption = 'ssl'; + } + } +} + +# read configuration from [sendemail "$identity"], fall back on [sendemail] +$identity = Git::config(@repo, "sendemail.identity") unless (defined $identity); +read_config("sendemail.$identity") if (defined $identity); +read_config("sendemail"); + +# fall back on builtin bool defaults +foreach my $setting (values %config_bool_settings) { + ${$setting->[0]} = $setting->[1] unless (defined (${$setting->[0]})); +} + +# 'default' encryption is none -- this only prevents a warning +$smtp_encryption = '' unless (defined $smtp_encryption); + +# Set CC suppressions +my(%suppress_cc); +if (@suppress_cc) { + foreach my $entry (@suppress_cc) { + die "Unknown --suppress-cc field: '$entry'\n" + unless $entry =~ /^(?:all|cccmd|cc|author|self|sob|body|bodycc)$/; + $suppress_cc{$entry} = 1; + } +} + +if ($suppress_cc{'all'}) { + foreach my $entry (qw (cccmd cc author self sob body bodycc)) { + $suppress_cc{$entry} = 1; + } + delete $suppress_cc{'all'}; +} + +# If explicit old-style ones are specified, they trump --suppress-cc. +$suppress_cc{'self'} = $suppress_from if defined $suppress_from; +$suppress_cc{'sob'} = !$signed_off_by_cc if defined $signed_off_by_cc; + +if ($suppress_cc{'body'}) { + foreach my $entry (qw (sob bodycc)) { + $suppress_cc{$entry} = 1; + } + delete $suppress_cc{'body'}; +} + +# Set confirm's default value +my $confirm_unconfigured = !defined $confirm; +if ($confirm_unconfigured) { + $confirm = scalar %suppress_cc ? 'compose' : 'auto'; +}; +die "Unknown --confirm setting: '$confirm'\n" + unless $confirm =~ /^(?:auto|cc|compose|always|never)/; + +# Debugging, print out the suppressions. +if (0) { + print "suppressions:\n"; + foreach my $entry (keys %suppress_cc) { + printf " %-5s -> $suppress_cc{$entry}\n", $entry; + } +} + +my ($repoauthor, $repocommitter); +($repoauthor) = Git::ident_person(@repo, 'author'); +($repocommitter) = Git::ident_person(@repo, 'committer'); + +# Verify the user input + +foreach my $entry (@initial_to) { + die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/; +} + +foreach my $entry (@initial_cc) { + die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/; +} + +foreach my $entry (@bcclist) { + die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/; +} + +sub parse_address_line { + if ($have_mail_address) { + return map { $_->format } Mail::Address->parse($_[0]); + } else { + return split_addrs($_[0]); + } +} + +sub split_addrs { + return quotewords('\s*,\s*', 1, @_); +} + +my %aliases; +my %parse_alias = ( + # multiline formats can be supported in the future + mutt => sub { my $fh = shift; while (<$fh>) { + if (/^\s*alias\s+(?:-group\s+\S+\s+)*(\S+)\s+(.*)$/) { + my ($alias, $addr) = ($1, $2); + $addr =~ s/#.*$//; # mutt allows # comments + # commas delimit multiple addresses + $aliases{$alias} = [ split_addrs($addr) ]; + }}}, + mailrc => sub { my $fh = shift; while (<$fh>) { + if (/^alias\s+(\S+)\s+(.*)$/) { + # spaces delimit multiple addresses + $aliases{$1} = [ quotewords('\s+', 0, $2) ]; + }}}, + pine => sub { my $fh = shift; my $f='\t[^\t]*'; + for (my $x = ''; defined($x); $x = $_) { + chomp $x; + $x .= $1 while(defined($_ = <$fh>) && /^ +(.*)$/); + $x =~ /^(\S+)$f\t\(?([^\t]+?)\)?(:?$f){0,2}$/ or next; + $aliases{$1} = [ split_addrs($2) ]; + }}, + elm => sub { my $fh = shift; + while (<$fh>) { + if (/^(\S+)\s+=\s+[^=]+=\s(\S+)/) { + my ($alias, $addr) = ($1, $2); + $aliases{$alias} = [ split_addrs($addr) ]; + } + } }, + + gnus => sub { my $fh = shift; while (<$fh>) { + if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) { + $aliases{$1} = [ $2 ]; + }}} +); + +if (@alias_files and $aliasfiletype and defined $parse_alias{$aliasfiletype}) { + foreach my $file (@alias_files) { + open my $fh, '<', $file or die "opening $file: $!\n"; + $parse_alias{$aliasfiletype}->($fh); + close $fh; + } +} + +($sender) = expand_aliases($sender) if defined $sender; + +# is_format_patch_arg($f) returns 0 if $f names a patch, or 1 if +# $f is a revision list specification to be passed to format-patch. +sub is_format_patch_arg { + return unless $repo; + my $f = shift; + try { + $repo->command('rev-parse', '--verify', '--quiet', $f); + if (defined($format_patch)) { + return $format_patch; + } + die(<<EOF); +File '$f' exists but it could also be the range of commits +to produce patches for. Please disambiguate by... + + * Saying "./$f" if you mean a file; or + * Giving --format-patch option if you mean a range. +EOF + } catch Git::Error::Command with { + # Not a valid revision. Treat it as a filename. + return 0; + } +} + +# Now that all the defaults are set, process the rest of the command line +# arguments and collect up the files that need to be processed. +my @rev_list_opts; +while (defined(my $f = shift @ARGV)) { + if ($f eq "--") { + push @rev_list_opts, "--", @ARGV; + @ARGV = (); + } elsif (-d $f and !is_format_patch_arg($f)) { + opendir my $dh, $f + or die "Failed to opendir $f: $!"; + + push @files, grep { -f $_ } map { catfile($f, $_) } + sort readdir $dh; + closedir $dh; + } elsif ((-f $f or -p $f) and !is_format_patch_arg($f)) { + push @files, $f; + } else { + push @rev_list_opts, $f; + } +} + +if (@rev_list_opts) { + die "Cannot run git format-patch from outside a repository\n" + unless $repo; + push @files, $repo->command('format-patch', '-o', tempdir(CLEANUP => 1), @rev_list_opts); +} + +if ($validate) { + foreach my $f (@files) { + unless (-p $f) { + my $error = validate_patch($f); + $error and die "fatal: $f: $error\nwarning: no patches were sent\n"; + } + } +} + +if (@files) { + unless ($quiet) { + print $_,"\n" for (@files); + } +} else { + print STDERR "\nNo patch files specified!\n\n"; + usage(); +} + +sub get_patch_subject { + my $fn = shift; + open (my $fh, '<', $fn); + while (my $line = <$fh>) { + next unless ($line =~ /^Subject: (.*)$/); + close $fh; + return "GIT: $1\n"; + } + close $fh; + die "No subject line in $fn ?"; +} + +if ($compose) { + # Note that this does not need to be secure, but we will make a small + # effort to have it be unique + $compose_filename = ($repo ? + tempfile(".gitsendemail.msg.XXXXXX", DIR => $repo->repo_path()) : + tempfile(".gitsendemail.msg.XXXXXX", DIR => "."))[1]; + open my $c, ">", $compose_filename + or die "Failed to open for writing $compose_filename: $!"; + + + my $tpl_sender = $sender || $repoauthor || $repocommitter || ''; + my $tpl_subject = $initial_subject || ''; + my $tpl_reply_to = $initial_reply_to || ''; + + print $c <<EOT; +From $tpl_sender # This line is ignored. +GIT: Lines beginning in "GIT:" will be removed. +GIT: Consider including an overall diffstat or table of contents +GIT: for the patch you are writing. +GIT: +GIT: Clear the body content if you don't wish to send a summary. +From: $tpl_sender +Subject: $tpl_subject +In-Reply-To: $tpl_reply_to + +EOT + for my $f (@files) { + print $c get_patch_subject($f); + } + close $c; + + if ($annotate) { + do_edit($compose_filename, @files); + } else { + do_edit($compose_filename); + } + + open my $c2, ">", $compose_filename . ".final" + or die "Failed to open $compose_filename.final : " . $!; + + open $c, "<", $compose_filename + or die "Failed to open $compose_filename : " . $!; + + my $need_8bit_cte = file_has_nonascii($compose_filename); + my $in_body = 0; + my $summary_empty = 1; + if (!defined $compose_encoding) { + $compose_encoding = "UTF-8"; + } + while(<$c>) { + next if m/^GIT:/; + if ($in_body) { + $summary_empty = 0 unless (/^\n$/); + } elsif (/^\n$/) { + $in_body = 1; + if ($need_8bit_cte) { + print $c2 "MIME-Version: 1.0\n", + "Content-Type: text/plain; ", + "charset=$compose_encoding\n", + "Content-Transfer-Encoding: 8bit\n"; + } + } elsif (/^MIME-Version:/i) { + $need_8bit_cte = 0; + } elsif (/^Subject:\s*(.+)\s*$/i) { + $initial_subject = $1; + my $subject = $initial_subject; + $_ = "Subject: " . + quote_subject($subject, $compose_encoding) . + "\n"; + } elsif (/^In-Reply-To:\s*(.+)\s*$/i) { + $initial_reply_to = $1; + next; + } elsif (/^From:\s*(.+)\s*$/i) { + $sender = $1; + next; + } elsif (/^(?:To|Cc|Bcc):/i) { + print "To/Cc/Bcc fields are not interpreted yet, they have been ignored\n"; + next; + } + print $c2 $_; + } + close $c; + close $c2; + + if ($summary_empty) { + print "Summary email is empty, skipping it\n"; + $compose = -1; + } +} elsif ($annotate) { + do_edit(@files); +} + +sub ask { + my ($prompt, %arg) = @_; + my $valid_re = $arg{valid_re}; + my $default = $arg{default}; + my $confirm_only = $arg{confirm_only}; + my $resp; + my $i = 0; + return defined $default ? $default : undef + unless defined $term->IN and defined fileno($term->IN) and + defined $term->OUT and defined fileno($term->OUT); + while ($i++ < 10) { + $resp = $term->readline($prompt); + if (!defined $resp) { # EOF + print "\n"; + return defined $default ? $default : undef; + } + if ($resp eq '' and defined $default) { + return $default; + } + if (!defined $valid_re or $resp =~ /$valid_re/) { + return $resp; + } + if ($confirm_only) { + my $yesno = $term->readline("Are you sure you want to use <$resp> [y/N]? "); + if (defined $yesno && $yesno =~ /y/i) { + return $resp; + } + } + } + return; +} + +my %broken_encoding; + +sub file_declares_8bit_cte { + my $fn = shift; + open (my $fh, '<', $fn); + while (my $line = <$fh>) { + last if ($line =~ /^$/); + return 1 if ($line =~ /^Content-Transfer-Encoding: .*8bit.*$/); + } + close $fh; + return 0; +} + +foreach my $f (@files) { + next unless (body_or_subject_has_nonascii($f) + && !file_declares_8bit_cte($f)); + $broken_encoding{$f} = 1; +} + +if (!defined $auto_8bit_encoding && scalar %broken_encoding) { + print "The following files are 8bit, but do not declare " . + "a Content-Transfer-Encoding.\n"; + foreach my $f (sort keys %broken_encoding) { + print " $f\n"; + } + $auto_8bit_encoding = ask("Which 8bit encoding should I declare [UTF-8]? ", + default => "UTF-8"); +} + +if (!$force) { + for my $f (@files) { + if (get_patch_subject($f) =~ /\Q*** SUBJECT HERE ***\E/) { + die "Refusing to send because the patch\n\t$f\n" + . "has the template subject '*** SUBJECT HERE ***'. " + . "Pass --force if you really want to send.\n"; + } + } +} + +if (!defined $sender) { + $sender = $repoauthor || $repocommitter || ''; +} + +# $sender could be an already sanitized address +# (e.g. sendemail.from could be manually sanitized by user). +# But it's a no-op to run sanitize_address on an already sanitized address. +$sender = sanitize_address($sender); + +my $prompting = 0; +if (!@initial_to && !defined $to_cmd) { + my $to = ask("Who should the emails be sent to (if any)? ", + default => "", + valid_re => qr/\@.*\./, confirm_only => 1); + push @initial_to, parse_address_line($to) if defined $to; # sanitized/validated later + $prompting++; +} + +sub expand_aliases { + return map { expand_one_alias($_) } @_; +} + +my %EXPANDED_ALIASES; +sub expand_one_alias { + my $alias = shift; + if ($EXPANDED_ALIASES{$alias}) { + die "fatal: alias '$alias' expands to itself\n"; + } + local $EXPANDED_ALIASES{$alias} = 1; + return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias; +} + +@initial_to = expand_aliases(@initial_to); +@initial_to = validate_address_list(sanitize_address_list(@initial_to)); +@initial_cc = expand_aliases(@initial_cc); +@initial_cc = validate_address_list(sanitize_address_list(@initial_cc)); +@bcclist = expand_aliases(@bcclist); +@bcclist = validate_address_list(sanitize_address_list(@bcclist)); + +if ($thread && !defined $initial_reply_to && $prompting) { + $initial_reply_to = ask( + "Message-ID to be used as In-Reply-To for the first email (if any)? ", + default => "", + valid_re => qr/\@.*\./, confirm_only => 1); +} +if (defined $initial_reply_to) { + $initial_reply_to =~ s/^\s*<?//; + $initial_reply_to =~ s/>?\s*$//; + $initial_reply_to = "<$initial_reply_to>" if $initial_reply_to ne ''; +} + +if (!defined $smtp_server) { + foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) { + if (-x $_) { + $smtp_server = $_; + last; + } + } + $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug* +} + +if ($compose && $compose > 0) { + @files = ($compose_filename . ".final", @files); +} + +# Variables we set as part of the loop over files +our ($message_id, %mail, $subject, $reply_to, $references, $message, + $needs_confirm, $message_num, $ask_default); + +sub extract_valid_address { + my $address = shift; + my $local_part_regexp = qr/[^<>"\s@]+/; + my $domain_regexp = qr/[^.<>"\s@]+(?:\.[^.<>"\s@]+)+/; + + # check for a local address: + return $address if ($address =~ /^($local_part_regexp)$/); + + $address =~ s/^\s*<(.*)>\s*$/$1/; + if ($have_email_valid) { + return scalar Email::Valid->address($address); + } + + # less robust/correct than the monster regexp in Email::Valid, + # but still does a 99% job, and one less dependency + return $1 if $address =~ /($local_part_regexp\@$domain_regexp)/; + return; +} + +sub extract_valid_address_or_die { + my $address = shift; + $address = extract_valid_address($address); + die "error: unable to extract a valid address from: $address\n" + if !$address; + return $address; +} + +sub validate_address { + my $address = shift; + while (!extract_valid_address($address)) { + print STDERR "error: unable to extract a valid address from: $address\n"; + $_ = ask("What to do with this address? ([q]uit|[d]rop|[e]dit): ", + valid_re => qr/^(?:quit|q|drop|d|edit|e)/i, + default => 'q'); + if (/^d/i) { + return undef; + } elsif (/^q/i) { + cleanup_compose_files(); + exit(0); + } + $address = ask("Who should the email be sent to (if any)? ", + default => "", + valid_re => qr/\@.*\./, confirm_only => 1); + } + return $address; +} + +sub validate_address_list { + return (grep { defined $_ } + map { validate_address($_) } @_); +} + +# Usually don't need to change anything below here. + +# we make a "fake" message id by taking the current number +# of seconds since the beginning of Unix time and tacking on +# a random number to the end, in case we are called quicker than +# 1 second since the last time we were called. + +# We'll setup a template for the message id, using the "from" address: + +my ($message_id_stamp, $message_id_serial); +sub make_message_id { + my $uniq; + if (!defined $message_id_stamp) { + $message_id_stamp = sprintf("%s-%s", time, $$); + $message_id_serial = 0; + } + $message_id_serial++; + $uniq = "$message_id_stamp-$message_id_serial"; + + my $du_part; + for ($sender, $repocommitter, $repoauthor) { + $du_part = extract_valid_address(sanitize_address($_)); + last if (defined $du_part and $du_part ne ''); + } + if (not defined $du_part or $du_part eq '') { + require Sys::Hostname; + $du_part = 'user@' . Sys::Hostname::hostname(); + } + my $message_id_template = "<%s-git-send-email-%s>"; + $message_id = sprintf($message_id_template, $uniq, $du_part); + #print "new message id = $message_id\n"; # Was useful for debugging +} + + + +$time = time - scalar $#files; + +sub unquote_rfc2047 { + local ($_) = @_; + my $encoding; + s{=\?([^?]+)\?q\?(.*?)\?=}{ + $encoding = $1; + my $e = $2; + $e =~ s/_/ /g; + $e =~ s/=([0-9A-F]{2})/chr(hex($1))/eg; + $e; + }eg; + return wantarray ? ($_, $encoding) : $_; +} + +sub quote_rfc2047 { + local $_ = shift; + my $encoding = shift || 'UTF-8'; + s/([^-a-zA-Z0-9!*+\/])/sprintf("=%02X", ord($1))/eg; + s/(.*)/=\?$encoding\?q\?$1\?=/; + return $_; +} + +sub is_rfc2047_quoted { + my $s = shift; + my $token = qr/[^][()<>@,;:"\/?.= \000-\037\177-\377]+/; + my $encoded_text = qr/[!->@-~]+/; + length($s) <= 75 && + $s =~ m/^(?:"[[:ascii:]]*"|=\?$token\?$token\?$encoded_text\?=)$/o; +} + +sub subject_needs_rfc2047_quoting { + my $s = shift; + + return ($s =~ /[^[:ascii:]]/) || ($s =~ /=\?/); +} + +sub quote_subject { + local $subject = shift; + my $encoding = shift || 'UTF-8'; + + if (subject_needs_rfc2047_quoting($subject)) { + return quote_rfc2047($subject, $encoding); + } + return $subject; +} + +# use the simplest quoting being able to handle the recipient +sub sanitize_address { + my ($recipient) = @_; + + # remove garbage after email address + $recipient =~ s/(.*>).*$/$1/; + + my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/); + + if (not $recipient_name) { + return $recipient; + } + + # if recipient_name is already quoted, do nothing + if (is_rfc2047_quoted($recipient_name)) { + return $recipient; + } + + # rfc2047 is needed if a non-ascii char is included + if ($recipient_name =~ /[^[:ascii:]]/) { + $recipient_name =~ s/^"(.*)"$/$1/; + $recipient_name = quote_rfc2047($recipient_name); + } + + # double quotes are needed if specials or CTLs are included + elsif ($recipient_name =~ /[][()<>@,;:\\".\000-\037\177]/) { + $recipient_name =~ s/(["\\\r])/\\$1/g; + $recipient_name = qq["$recipient_name"]; + } + + return "$recipient_name $recipient_addr"; + +} + +sub sanitize_address_list { + return (map { sanitize_address($_) } @_); +} + +# Returns the local Fully Qualified Domain Name (FQDN) if available. +# +# Tightly configured MTAa require that a caller sends a real DNS +# domain name that corresponds the IP address in the HELO/EHLO +# handshake. This is used to verify the connection and prevent +# spammers from trying to hide their identity. If the DNS and IP don't +# match, the receiveing MTA may deny the connection. +# +# Here is a deny example of Net::SMTP with the default "localhost.localdomain" +# +# Net::SMTP=GLOB(0x267ec28)>>> EHLO localhost.localdomain +# Net::SMTP=GLOB(0x267ec28)<<< 550 EHLO argument does not match calling host +# +# This maildomain*() code is based on ideas in Perl library Test::Reporter +# /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain () + +sub valid_fqdn { + my $domain = shift; + return defined $domain && !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./; +} + +sub maildomain_net { + my $maildomain; + + if (eval { require Net::Domain; 1 }) { + my $domain = Net::Domain::domainname(); + $maildomain = $domain if valid_fqdn($domain); + } + + return $maildomain; +} + +sub maildomain_mta { + my $maildomain; + + if (eval { require Net::SMTP; 1 }) { + for my $host (qw(mailhost localhost)) { + my $smtp = Net::SMTP->new($host); + if (defined $smtp) { + my $domain = $smtp->domain; + $smtp->quit; + + $maildomain = $domain if valid_fqdn($domain); + + last if $maildomain; + } + } + } + + return $maildomain; +} + +sub maildomain { + return maildomain_net() || maildomain_mta() || 'localhost.localdomain'; +} + +sub smtp_host_string { + if (defined $smtp_server_port) { + return "$smtp_server:$smtp_server_port"; + } else { + return $smtp_server; + } +} + +# Returns 1 if authentication succeeded or was not necessary +# (smtp_user was not specified), and 0 otherwise. + +sub smtp_auth_maybe { + if (!defined $smtp_authuser || $auth) { + return 1; + } + + # Workaround AUTH PLAIN/LOGIN interaction defect + # with Authen::SASL::Cyrus + eval { + require Authen::SASL; + Authen::SASL->import(qw(Perl)); + }; + + # TODO: Authentication may fail not because credentials were + # invalid but due to other reasons, in which we should not + # reject credentials. + $auth = Git::credential({ + 'protocol' => 'smtp', + 'host' => smtp_host_string(), + 'username' => $smtp_authuser, + # if there's no password, "git credential fill" will + # give us one, otherwise it'll just pass this one. + 'password' => $smtp_authpass + }, sub { + my $cred = shift; + return !!$smtp->auth($cred->{'username'}, $cred->{'password'}); + }); + + return $auth; +} + +sub ssl_verify_params { + eval { + require IO::Socket::SSL; + IO::Socket::SSL->import(qw/SSL_VERIFY_PEER SSL_VERIFY_NONE/); + }; + if ($@) { + print STDERR "Not using SSL_VERIFY_PEER due to out-of-date IO::Socket::SSL.\n"; + return; + } + + if (!defined $smtp_ssl_cert_path) { + $smtp_ssl_cert_path = "/etc/ssl/certs"; + } + + if ($smtp_ssl_cert_path eq "") { + return (SSL_verify_mode => SSL_VERIFY_NONE()); + } elsif (-d $smtp_ssl_cert_path) { + return (SSL_verify_mode => SSL_VERIFY_PEER(), + SSL_ca_path => $smtp_ssl_cert_path); + } elsif (-f $smtp_ssl_cert_path) { + return (SSL_verify_mode => SSL_VERIFY_PEER(), + SSL_ca_file => $smtp_ssl_cert_path); + } else { + print STDERR "Not using SSL_VERIFY_PEER because the CA path does not exist.\n"; + return (SSL_verify_mode => SSL_VERIFY_NONE()); + } +} + +# Returns 1 if the message was sent, and 0 otherwise. +# In actuality, the whole program dies when there +# is an error sending a message. + +sub send_message { + my @recipients = unique_email_list(@to); + @cc = (grep { my $cc = extract_valid_address_or_die($_); + not grep { $cc eq $_ || $_ =~ /<\Q${cc}\E>$/ } @recipients + } + @cc); + my $to = join (",\n\t", @recipients); + @recipients = unique_email_list(@recipients,@cc,@bcclist); + @recipients = (map { extract_valid_address_or_die($_) } @recipients); + my $date = format_2822_time($time++); + my $gitversion = '@@GIT_VERSION@@'; + if ($gitversion =~ m/..GIT_VERSION../) { + $gitversion = Git::version(); + } + + my $cc = join(",\n\t", unique_email_list(@cc)); + my $ccline = ""; + if ($cc ne '') { + $ccline = "\nCc: $cc"; + } + make_message_id() unless defined($message_id); + + my $header = "From: $sender +To: $to${ccline} +Subject: $subject +Date: $date +Message-Id: $message_id +X-Mailer: git-send-email $gitversion +"; + if ($reply_to) { + + $header .= "In-Reply-To: $reply_to\n"; + $header .= "References: $references\n"; + } + if (@xh) { + $header .= join("\n", @xh) . "\n"; + } + + my @sendmail_parameters = ('-i', @recipients); + my $raw_from = $sender; + if (defined $envelope_sender && $envelope_sender ne "auto") { + $raw_from = $envelope_sender; + } + $raw_from = extract_valid_address($raw_from); + unshift (@sendmail_parameters, + '-f', $raw_from) if(defined $envelope_sender); + + if ($needs_confirm && !$dry_run) { + print "\n$header\n"; + if ($needs_confirm eq "inform") { + $confirm_unconfigured = 0; # squelch this message for the rest of this run + $ask_default = "y"; # assume yes on EOF since user hasn't explicitly asked for confirmation + print " The Cc list above has been expanded by additional\n"; + print " addresses found in the patch commit message. By default\n"; + print " send-email prompts before sending whenever this occurs.\n"; + print " This behavior is controlled by the sendemail.confirm\n"; + print " configuration setting.\n"; + print "\n"; + print " For additional information, run 'git send-email --help'.\n"; + print " To retain the current behavior, but squelch this message,\n"; + print " run 'git config --global sendemail.confirm auto'.\n\n"; + } + $_ = ask("Send this email? ([y]es|[n]o|[q]uit|[a]ll): ", + valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i, + default => $ask_default); + die "Send this email reply required" unless defined $_; + if (/^n/i) { + return 0; + } elsif (/^q/i) { + cleanup_compose_files(); + exit(0); + } elsif (/^a/i) { + $confirm = 'never'; + } + } + + unshift (@sendmail_parameters, @smtp_server_options); + + if ($dry_run) { + # We don't want to send the email. + } elsif ($smtp_server =~ m#^/#) { + my $pid = open my $sm, '|-'; + defined $pid or die $!; + if (!$pid) { + exec($smtp_server, @sendmail_parameters) or die $!; + } + print $sm "$header\n$message"; + close $sm or die $!; + } else { + + if (!defined $smtp_server) { + die "The required SMTP server is not properly defined." + } + + if ($smtp_encryption eq 'ssl') { + $smtp_server_port ||= 465; # ssmtp + require Net::SMTP::SSL; + $smtp_domain ||= maildomain(); + $smtp ||= Net::SMTP::SSL->new($smtp_server, + Hello => $smtp_domain, + Port => $smtp_server_port, + ssl_verify_params()); + } + else { + require Net::SMTP; + $smtp_domain ||= maildomain(); + $smtp_server_port ||= 25; + $smtp ||= Net::SMTP->new($smtp_server, + Hello => $smtp_domain, + Debug => $debug_net_smtp, + Port => $smtp_server_port); + if ($smtp_encryption eq 'tls' && $smtp) { + require Net::SMTP::SSL; + $smtp->command('STARTTLS'); + $smtp->response(); + if ($smtp->code == 220) { + $smtp = Net::SMTP::SSL->start_SSL($smtp, + ssl_verify_params()) + or die "STARTTLS failed! ".IO::Socket::SSL::errstr(); + $smtp_encryption = ''; + # Send EHLO again to receive fresh + # supported commands + $smtp->hello($smtp_domain); + } else { + die "Server does not support STARTTLS! ".$smtp->message; + } + } + } + + if (!$smtp) { + die "Unable to initialize SMTP properly. Check config and use --smtp-debug. ", + "VALUES: server=$smtp_server ", + "encryption=$smtp_encryption ", + "hello=$smtp_domain", + defined $smtp_server_port ? " port=$smtp_server_port" : ""; + } + + smtp_auth_maybe or die $smtp->message; + + $smtp->mail( $raw_from ) or die $smtp->message; + $smtp->to( @recipients ) or die $smtp->message; + $smtp->data or die $smtp->message; + $smtp->datasend("$header\n$message") or die $smtp->message; + $smtp->dataend() or die $smtp->message; + $smtp->code =~ /250|200/ or die "Failed to send $subject\n".$smtp->message; + } + if ($quiet) { + printf (($dry_run ? "Dry-" : "")."Sent %s\n", $subject); + } else { + print (($dry_run ? "Dry-" : "")."OK. Log says:\n"); + if ($smtp_server !~ m#^/#) { + print "Server: $smtp_server\n"; + print "MAIL FROM:<$raw_from>\n"; + foreach my $entry (@recipients) { + print "RCPT TO:<$entry>\n"; + } + } else { + print "Sendmail: $smtp_server ".join(' ',@sendmail_parameters)."\n"; + } + print $header, "\n"; + if ($smtp) { + print "Result: ", $smtp->code, ' ', + ($smtp->message =~ /\n([^\n]+\n)$/s), "\n"; + } else { + print "Result: OK\n"; + } + } + + return 1; +} + +$reply_to = $initial_reply_to; +$references = $initial_reply_to || ''; +$subject = $initial_subject; +$message_num = 0; + +foreach my $t (@files) { + open my $fh, "<", $t or die "can't open file $t"; + + my $author = undef; + my $sauthor = undef; + my $author_encoding; + my $has_content_type; + my $body_encoding; + @to = (); + @cc = (); + @xh = (); + my $input_format = undef; + my @header = (); + $message = ""; + $message_num++; + # First unfold multiline header fields + while(<$fh>) { + last if /^\s*$/; + if (/^\s+\S/ and @header) { + chomp($header[$#header]); + s/^\s+/ /; + $header[$#header] .= $_; + } else { + push(@header, $_); + } + } + # Now parse the header + foreach(@header) { + if (/^From /) { + $input_format = 'mbox'; + next; + } + chomp; + if (!defined $input_format && /^[-A-Za-z]+:\s/) { + $input_format = 'mbox'; + } + + if (defined $input_format && $input_format eq 'mbox') { + if (/^Subject:\s+(.*)$/i) { + $subject = $1; + } + elsif (/^From:\s+(.*)$/i) { + ($author, $author_encoding) = unquote_rfc2047($1); + $sauthor = sanitize_address($author); + next if $suppress_cc{'author'}; + next if $suppress_cc{'self'} and $sauthor eq $sender; + printf("(mbox) Adding cc: %s from line '%s'\n", + $1, $_) unless $quiet; + push @cc, $1; + } + elsif (/^To:\s+(.*)$/i) { + foreach my $addr (parse_address_line($1)) { + printf("(mbox) Adding to: %s from line '%s'\n", + $addr, $_) unless $quiet; + push @to, $addr; + } + } + elsif (/^Cc:\s+(.*)$/i) { + foreach my $addr (parse_address_line($1)) { + my $qaddr = unquote_rfc2047($addr); + my $saddr = sanitize_address($qaddr); + if ($saddr eq $sender) { + next if ($suppress_cc{'self'}); + } else { + next if ($suppress_cc{'cc'}); + } + printf("(mbox) Adding cc: %s from line '%s'\n", + $addr, $_) unless $quiet; + push @cc, $addr; + } + } + elsif (/^Content-type:/i) { + $has_content_type = 1; + if (/charset="?([^ "]+)/) { + $body_encoding = $1; + } + push @xh, $_; + } + elsif (/^Message-Id: (.*)/i) { + $message_id = $1; + } + elsif (!/^Date:\s/i && /^[-A-Za-z]+:\s+\S/) { + push @xh, $_; + } + + } else { + # In the traditional + # "send lots of email" format, + # line 1 = cc + # line 2 = subject + # So let's support that, too. + $input_format = 'lots'; + if (@cc == 0 && !$suppress_cc{'cc'}) { + printf("(non-mbox) Adding cc: %s from line '%s'\n", + $_, $_) unless $quiet; + push @cc, $_; + } elsif (!defined $subject) { + $subject = $_; + } + } + } + # Now parse the message body + while(<$fh>) { + $message .= $_; + if (/^(Signed-off-by|Cc): (.*)$/i) { + chomp; + my ($what, $c) = ($1, $2); + chomp $c; + my $sc = sanitize_address($c); + if ($sc eq $sender) { + next if ($suppress_cc{'self'}); + } else { + next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i; + next if $suppress_cc{'bodycc'} and $what =~ /Cc/i; + } + push @cc, $c; + printf("(body) Adding cc: %s from line '%s'\n", + $c, $_) unless $quiet; + } + } + close $fh; + + push @to, recipients_cmd("to-cmd", "to", $to_cmd, $t) + if defined $to_cmd; + push @cc, recipients_cmd("cc-cmd", "cc", $cc_cmd, $t) + if defined $cc_cmd && !$suppress_cc{'cccmd'}; + + if ($broken_encoding{$t} && !$has_content_type) { + $has_content_type = 1; + push @xh, "MIME-Version: 1.0", + "Content-Type: text/plain; charset=$auto_8bit_encoding", + "Content-Transfer-Encoding: 8bit"; + $body_encoding = $auto_8bit_encoding; + } + + if ($broken_encoding{$t} && !is_rfc2047_quoted($subject)) { + $subject = quote_subject($subject, $auto_8bit_encoding); + } + + if (defined $sauthor and $sauthor ne $sender) { + $message = "From: $author\n\n$message"; + if (defined $author_encoding) { + if ($has_content_type) { + if ($body_encoding eq $author_encoding) { + # ok, we already have the right encoding + } + else { + # uh oh, we should re-encode + } + } + else { + $has_content_type = 1; + push @xh, + 'MIME-Version: 1.0', + "Content-Type: text/plain; charset=$author_encoding", + 'Content-Transfer-Encoding: 8bit'; + } + } + } + + $needs_confirm = ( + $confirm eq "always" or + ($confirm =~ /^(?:auto|cc)$/ && @cc) or + ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1)); + $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc); + + @to = validate_address_list(sanitize_address_list(@to)); + @cc = validate_address_list(sanitize_address_list(@cc)); + + @to = (@initial_to, @to); + @cc = (@initial_cc, @cc); + + my $message_was_sent = send_message(); + + # set up for the next message + if ($thread && $message_was_sent && + ($chain_reply_to || !defined $reply_to || length($reply_to) == 0 || + $message_num == 1)) { + $reply_to = $message_id; + if (length $references > 0) { + $references .= "\n $message_id"; + } else { + $references = "$message_id"; + } + } + $message_id = undef; +} + +# Execute a command (e.g. $to_cmd) to get a list of email addresses +# and return a results array +sub recipients_cmd { + my ($prefix, $what, $cmd, $file) = @_; + + my @addresses = (); + open my $fh, "-|", "$cmd \Q$file\E" + or die "($prefix) Could not execute '$cmd'"; + while (my $address = <$fh>) { + $address =~ s/^\s*//g; + $address =~ s/\s*$//g; + $address = sanitize_address($address); + next if ($address eq $sender and $suppress_cc{'self'}); + push @addresses, $address; + printf("($prefix) Adding %s: %s from: '%s'\n", + $what, $address, $cmd) unless $quiet; + } + close $fh + or die "($prefix) failed to close pipe to '$cmd'"; + return @addresses; +} + +cleanup_compose_files(); + +sub cleanup_compose_files { + unlink($compose_filename, $compose_filename . ".final") if $compose; +} + +$smtp->quit if $smtp; + +sub unique_email_list { + my %seen; + my @emails; + + foreach my $entry (@_) { + my $clean = extract_valid_address_or_die($entry); + $seen{$clean} ||= 0; + next if $seen{$clean}++; + push @emails, $entry; + } + return @emails; +} + +sub validate_patch { + my $fn = shift; + open(my $fh, '<', $fn) + or die "unable to open $fn: $!\n"; + while (my $line = <$fh>) { + if (length($line) > 998) { + return "$.: patch contains a line longer than 998 characters"; + } + } + return; +} + +sub file_has_nonascii { + my $fn = shift; + open(my $fh, '<', $fn) + or die "unable to open $fn: $!\n"; + while (my $line = <$fh>) { + return 1 if $line =~ /[^[:ascii:]]/; + } + return 0; +} + +sub body_or_subject_has_nonascii { + my $fn = shift; + open(my $fh, '<', $fn) + or die "unable to open $fn: $!\n"; + while (my $line = <$fh>) { + last if $line =~ /^$/; + return 1 if $line =~ /^Subject.*[^[:ascii:]]/; + } + while (my $line = <$fh>) { + return 1 if $line =~ /[^[:ascii:]]/; + } + return 0; +} |