git-send-email.perl

   1 #!/usr/bin/perl -w
   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
  19 use strict;
  20 use warnings;
  21 use Term::ReadLine;
  22 use Getopt::Long;
  23 use Data::Dumper;
  24 use Net::SMTP;
  25
  26 # most mail servers generate the Date: header, but not all...
  27 $ENV{LC_ALL} = 'C';
  28 use POSIX qw/strftime/;
  29
  30 my $have_email_valid = eval { require Email::Valid; 1 };
  31 my $smtp;
  32
  33 sub unique_email_list(@);
  34 sub cleanup_compose_files();
  35
  36 # Constants (essentially)
  37 my $compose_filename = ".msg.$$";
  38
  39 # Variables we fill in automatically, or via prompting:
  40 my (@to,@cc,@initial_cc,@bcclist,
  41         $initial_reply_to,$initial_subject,@files,$from,$compose,$time);
  42
  43 # Behavior modification variables
  44 my ($chain_reply_to, $quiet, $suppress_from, $no_signed_off_cc) = (1, 0, 0, 0);
  45 my $smtp_server;
  46
  47 # Example reply to:
  48 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
  49
  50 my $term = new Term::ReadLine 'git-send-email';
  51
  52 # Begin by accumulating all the variables (defined above), that we will end up
  53 # needing, first, from the command line:
  54
  55 my $rc = GetOptions("from=s" => \$from,
  56                     "in-reply-to=s" => \$initial_reply_to,
  57                     "subject=s" => \$initial_subject,
  58                     "to=s" => \@to,
  59                     "cc=s" => \@initial_cc,
  60                     "bcc=s" => \@bcclist,
  61                     "chain-reply-to!" => \$chain_reply_to,
  62                     "smtp-server=s" => \$smtp_server,
  63                     "compose" => \$compose,
  64                     "quiet" => \$quiet,
  65                     "suppress-from" => \$suppress_from,
  66                     "no-signed-off-cc|no-signed-off-by-cc" => \$no_signed_off_cc,
  67          );
  68
  69 # Now, let's fill any that aren't set in with defaults:
  70
  71 sub gitvar {
  72     my ($var) = @_;
  73     my $fh;
  74     my $pid = open($fh, '-|');
  75     die "$!" unless defined $pid;
  76     if (!$pid) {
  77         exec('git-var', $var) or die "$!";
  78     }
  79     my ($val) = <$fh>;
  80     close $fh or die "$!";
  81     chomp($val);
  82     return $val;
  83 }
  84
  85 sub gitvar_ident {
  86     my ($name) = @_;
  87     my $val = gitvar($name);
  88     my @field = split(/\s+/, $val);
  89     return join(' ', @field[0...(@field-3)]);
  90 }
  91
  92 my ($author) = gitvar_ident('GIT_AUTHOR_IDENT');
  93 my ($committer) = gitvar_ident('GIT_COMMITTER_IDENT');
  94
  95 my %aliases;
  96 chomp(my @alias_files = `git-repo-config --get-all sendemail.aliasesfile`);
  97 chomp(my $aliasfiletype = `git-repo-config sendemail.aliasfiletype`);
  98 my %parse_alias = (
  99         # multiline formats can be supported in the future
 100         mutt => sub { my $fh = shift; while (<$fh>) {
 101                 if (/^alias\s+(\S+)\s+(.*)$/) {
 102                         my ($alias, $addr) = ($1, $2);
 103                         $addr =~ s/#.*$//; # mutt allows # comments
 104                          # commas delimit multiple addresses
 105                         $aliases{$alias} = [ split(/\s*,\s*/, $addr) ];
 106                 }}},
 107         mailrc => sub { my $fh = shift; while (<$fh>) {
 108                 if (/^alias\s+(\S+)\s+(.*)$/) {
 109                         # spaces delimit multiple addresses
 110                         $aliases{$1} = [ split(/\s+/, $2) ];
 111                 }}},
 112         pine => sub { my $fh = shift; while (<$fh>) {
 113                 if (/^(\S+)\s+(.*)$/) {
 114                         $aliases{$1} = [ split(/\s*,\s*/, $2) ];
 115                 }}},
 116         gnus => sub { my $fh = shift; while (<$fh>) {
 117                 if (/\(define-mail-alias\s+"(\S+?)"\s+"(\S+?)"\)/) {
 118                         $aliases{$1} = [ $2 ];
 119                 }}}
 120 );
 121
 122 if (@alias_files && defined $parse_alias{$aliasfiletype}) {
 123         foreach my $file (@alias_files) {
 124                 open my $fh, '<', $file or die "opening $file: $!\n";
 125                 $parse_alias{$aliasfiletype}->($fh);
 126                 close $fh;
 127         }
 128 }
 129
 130 my $prompting = 0;
 131 if (!defined $from) {
 132         $from = $author || $committer;
 133         do {
 134                 $_ = $term->readline("Who should the emails appear to be from? ",
 135                         $from);
 136         } while (!defined $_);
 137
 138         $from = $_;
 139         print "Emails will be sent from: ", $from, "\n";
 140         $prompting++;
 141 }
 142
 143 if (!@to) {
 144         do {
 145                 $_ = $term->readline("Who should the emails be sent to? ",
 146                                 "");
 147         } while (!defined $_);
 148         my $to = $_;
 149         push @to, split /,/, $to;
 150         $prompting++;
 151 }
 152
 153 sub expand_aliases {
 154         my @cur = @_;
 155         my @last;
 156         do {
 157                 @last = @cur;
 158                 @cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
 159         } while (join(',',@cur) ne join(',',@last));
 160         return @cur;
 161 }
 162
 163 @to = expand_aliases(@to);
 164 @initial_cc = expand_aliases(@initial_cc);
 165 @bcclist = expand_aliases(@bcclist);
 166
 167 if (!defined $initial_subject && $compose) {
 168         do {
 169                 $_ = $term->readline("What subject should the emails start with? ",
 170                         $initial_subject);
 171         } while (!defined $_);
 172         $initial_subject = $_;
 173         $prompting++;
 174 }
 175
 176 if (!defined $initial_reply_to && $prompting) {
 177         do {
 178                 $_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ",
 179                         $initial_reply_to);
 180         } while (!defined $_);
 181
 182         $initial_reply_to = $_;
 183         $initial_reply_to =~ s/(^\s+|\s+$)//g;
 184 }
 185
 186 if (!$smtp_server) {
 187         foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
 188                 if (-x $_) {
 189                         $smtp_server = $_;
 190                         last;
 191                 }
 192         }
 193         $smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 194 }
 195
 196 if ($compose) {
 197         # Note that this does not need to be secure, but we will make a small
 198         # effort to have it be unique
 199         open(C,">",$compose_filename)
 200                 or die "Failed to open for writing $compose_filename: $!";
 201         print C "From $from # This line is ignored.\n";
 202         printf C "Subject: %s\n\n", $initial_subject;
 203         printf C <<EOT;
 204 GIT: Please enter your email below.
 205 GIT: Lines beginning in "GIT: " will be removed.
 206 GIT: Consider including an overall diffstat or table of contents
 207 GIT: for the patch you are writing.
 208
 209 EOT
 210         close(C);
 211
 212         my $editor = $ENV{EDITOR};
 213         $editor = 'vi' unless defined $editor;
 214         system($editor, $compose_filename);
 215
 216         open(C2,">",$compose_filename . ".final")
 217                 or die "Failed to open $compose_filename.final : " . $!;
 218
 219         open(C,"<",$compose_filename)
 220                 or die "Failed to open $compose_filename : " . $!;
 221
 222         while(<C>) {
 223                 next if m/^GIT: /;
 224                 print C2 $_;
 225         }
 226         close(C);
 227         close(C2);
 228
 229         do {
 230                 $_ = $term->readline("Send this email? (y|n) ");
 231         } while (!defined $_);
 232
 233         if (uc substr($_,0,1) ne 'Y') {
 234                 cleanup_compose_files();
 235                 exit(0);
 236         }
 237
 238         @files = ($compose_filename . ".final");
 239 }
 240
 241
 242 # Now that all the defaults are set, process the rest of the command line
 243 # arguments and collect up the files that need to be processed.
 244 for my $f (@ARGV) {
 245         if (-d $f) {
 246                 opendir(DH,$f)
 247                         or die "Failed to opendir $f: $!";
 248
 249                 push @files, grep { -f $_ } map { +$f . "/" . $_ }
 250                                 sort readdir(DH);
 251
 252         } elsif (-f $f) {
 253                 push @files, $f;
 254
 255         } else {
 256                 print STDERR "Skipping $f - not found.\n";
 257         }
 258 }
 259
 260 if (@files) {
 261         unless ($quiet) {
 262                 print $_,"\n" for (@files);
 263         }
 264 } else {
 265         print <<EOT;
 266 git-send-email [options] <file | directory> [... file | directory ]
 267 Options:
 268    --from         Specify the "From:" line of the email to be sent.
 269
 270    --to           Specify the primary "To:" line of the email.
 271
 272    --cc           Specify an initial "Cc:" list for the entire series
 273                   of emails.
 274
 275    --bcc          Specify a list of email addresses that should be Bcc:
 276                   on all the emails.
 277
 278    --compose      Use \$EDITOR to edit an introductory message for the
 279                   patch series.
 280
 281    --subject      Specify the initial "Subject:" line.
 282                   Only necessary if --compose is also set.  If --compose
 283                   is not set, this will be prompted for.
 284
 285    --in-reply-to  Specify the first "In-Reply-To:" header line.
 286                   Only used if --compose is also set.  If --compose is not
 287                   set, this will be prompted for.
 288
 289    --chain-reply-to If set, the replies will all be to the previous
 290                   email sent, rather than to the first email sent.
 291                   Defaults to on.
 292
 293    --no-signed-off-cc Suppress the automatic addition of email addresses
 294                  that appear in a Signed-off-by: line, to the cc: list.
 295                  Note: Using this option is not recommended.
 296
 297    --smtp-server  If set, specifies the outgoing SMTP server to use.
 298                   Defaults to localhost.
 299
 300   --suppress-from Supress sending emails to yourself if your address
 301                   appears in a From: line.
 302
 303    --quiet      Make git-send-email less verbose.  One line per email should be
 304                 all that is output.
 305
 306 Error: Please specify a file or a directory on the command line.
 307 EOT
 308         exit(1);
 309 }
 310
 311 # Variables we set as part of the loop over files
 312 our ($message_id, $cc, %mail, $subject, $reply_to, $references, $message);
 313
 314 sub extract_valid_address {
 315         my $address = shift;
 316
 317         # check for a local address:
 318         return $address if ($address =~ /^([\w\-]+)$/);
 319
 320         if ($have_email_valid) {
 321                 return Email::Valid->address($address);
 322         } else {
 323                 # less robust/correct than the monster regexp in Email::Valid,
 324                 # but still does a 99% job, and one less dependency
 325                 return ($address =~ /([^\"<>\s]+@[^<>\s]+)/);
 326         }
 327 }
 328
 329 # Usually don't need to change anything below here.
 330
 331 # we make a "fake" message id by taking the current number
 332 # of seconds since the beginning of Unix time and tacking on
 333 # a random number to the end, in case we are called quicker than
 334 # 1 second since the last time we were called.
 335
 336 # We'll setup a template for the message id, using the "from" address:
 337 my $message_id_from = extract_valid_address($from);
 338 my $message_id_template = "<%s-git-send-email-$message_id_from>";
 339
 340 sub make_message_id
 341 {
 342         my $date = time;
 343         my $pseudo_rand = int (rand(4200));
 344         $message_id = sprintf $message_id_template, "$date$pseudo_rand";
 345         #print "new message id = $message_id\n"; # Was useful for debugging
 346 }
 347
 348
 349
 350 $cc = "";
 351 $time = time - scalar $#files;
 352
 353 sub send_message
 354 {
 355         my @recipients = unique_email_list(@to);
 356         my $to = join (",\n\t", @recipients);
 357         @recipients = unique_email_list(@recipients,@cc,@bcclist);
 358         my $date = strftime('%a, %d %b %Y %H:%M:%S %z', localtime($time++));
 359         my $gitversion = '@@GIT_VERSION@@';
 360         if ($gitversion =~ m/..GIT_VERSION../) {
 361             $gitversion = `git --version`;
 362             chomp $gitversion;
 363             # keep only what's after the last space
 364             $gitversion =~ s/^.* //;
 365         }
 366
 367         my $header = "From: $from
 368 To: $to
 369 Cc: $cc
 370 Subject: $subject
 371 Reply-To: $from
 372 Date: $date
 373 Message-Id: $message_id
 374 X-Mailer: git-send-email $gitversion
 375 ";
 376         if ($reply_to) {
 377
 378                 $header .= "In-Reply-To: $reply_to\n";
 379                 $header .= "References: $references\n";
 380         }
 381
 382         if ($smtp_server =~ m#^/#) {
 383                 my $pid = open my $sm, '|-';
 384                 defined $pid or die $!;
 385                 if (!$pid) {
 386                         exec($smtp_server,'-i',@recipients) or die $!;
 387                 }
 388                 print $sm "$header\n$message";
 389                 close $sm or die $?;
 390         } else {
 391                 $smtp ||= Net::SMTP->new( $smtp_server );
 392                 $smtp->mail( $from ) or die $smtp->message;
 393                 $smtp->to( @recipients ) or die $smtp->message;
 394                 $smtp->data or die $smtp->message;
 395                 $smtp->datasend("$header\n$message") or die $smtp->message;
 396                 $smtp->dataend() or die $smtp->message;
 397                 $smtp->ok or die "Failed to send $subject\n".$smtp->message;
 398         }
 399         if ($quiet) {
 400                 printf "Sent %s\n", $subject;
 401         } else {
 402                 print "OK. Log says:\nDate: $date\n";
 403                 if ($smtp) {
 404                         print "Server: $smtp_server\n";
 405                 } else {
 406                         print "Sendmail: $smtp_server\n";
 407                 }
 408                 print "From: $from\nSubject: $subject\nCc: $cc\nTo: $to\n\n";
 409                 if ($smtp) {
 410                         print "Result: ", $smtp->code, ' ',
 411                                 ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
 412                 } else {
 413                         print "Result: OK\n";
 414                 }
 415         }
 416 }
 417
 418 $reply_to = $initial_reply_to;
 419 make_message_id();
 420 $subject = $initial_subject;
 421
 422 foreach my $t (@files) {
 423         open(F,"<",$t) or die "can't open file $t";
 424
 425         my $author_not_sender = undef;
 426         @cc = @initial_cc;
 427         my $found_mbox = 0;
 428         my $header_done = 0;
 429         $message = "";
 430         while(<F>) {
 431                 if (!$header_done) {
 432                         $found_mbox = 1, next if (/^From /);
 433                         chomp;
 434
 435                         if ($found_mbox) {
 436                                 if (/^Subject:\s+(.*)$/) {
 437                                         $subject = $1;
 438
 439                                 } elsif (/^(Cc|From):\s+(.*)$/) {
 440                                         if ($2 eq $from) {
 441                                                 next if ($suppress_from);
 442                                         }
 443                                         else {
 444                                                 $author_not_sender = $2;
 445                                         }
 446                                         printf("(mbox) Adding cc: %s from line '%s'\n",
 447                                                 $2, $_) unless $quiet;
 448                                         push @cc, $2;
 449                                 }
 450
 451                         } else {
 452                                 # In the traditional
 453                                 # "send lots of email" format,
 454                                 # line 1 = cc
 455                                 # line 2 = subject
 456                                 # So let's support that, too.
 457                                 if (@cc == 0) {
 458                                         printf("(non-mbox) Adding cc: %s from line '%s'\n",
 459                                                 $_, $_) unless $quiet;
 460
 461                                         push @cc, $_;
 462
 463                                 } elsif (!defined $subject) {
 464                                         $subject = $_;
 465                                 }
 466                         }
 467
 468                         # A whitespace line will terminate the headers
 469                         if (m/^\s*$/) {
 470                                 $header_done = 1;
 471                         }
 472                 } else {
 473                         $message .=  $_;
 474                         if (/^Signed-off-by: (.*)$/i && !$no_signed_off_cc) {
 475                                 my $c = $1;
 476                                 chomp $c;
 477                                 push @cc, $c;
 478                                 printf("(sob) Adding cc: %s from line '%s'\n",
 479                                         $c, $_) unless $quiet;
 480                         }
 481                 }
 482         }
 483         close F;
 484         if (defined $author_not_sender) {
 485                 $message = "From: $author_not_sender\n\n$message";
 486         }
 487
 488         $cc = join(", ", unique_email_list(@cc));
 489
 490         send_message();
 491
 492         # set up for the next message
 493         if ($chain_reply_to || length($reply_to) == 0) {
 494                 $reply_to = $message_id;
 495                 if (length $references > 0) {
 496                         $references .= " $message_id";
 497                 } else {
 498                         $references = "$message_id";
 499                 }
 500         }
 501         make_message_id();
 502 }
 503
 504 if ($compose) {
 505         cleanup_compose_files();
 506 }
 507
 508 sub cleanup_compose_files() {
 509         unlink($compose_filename, $compose_filename . ".final");
 510
 511 }
 512
 513 $smtp->quit if $smtp;
 514
 515 sub unique_email_list(@) {
 516         my %seen;
 517         my @emails;
 518
 519         foreach my $entry (@_) {
 520                 if (my $clean = extract_valid_address($entry)) {
 521                         $seen{$clean} ||= 0;
 522                         next if $seen{$clean}++;
 523                         push @emails, $entry;
 524                 } else {
 525                         print STDERR "W: unable to extract a valid address",
 526                                         " from: $entry\n";
 527                 }
 528         }
 529         return @emails;
 530 }