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 Mail::Sendmail qw(sendmail %mailcfg);
  23 use Getopt::Long;
  24 use Data::Dumper;
  25 use Email::Valid;
  26
  27 sub unique_email_list(@);
  28 sub cleanup_compose_files();
  29
  30 # Constants (essentially)
  31 my $compose_filename = ".msg.$$";
  32
  33 # Variables we fill in automatically, or via prompting:
  34 my (@to,@cc,@initial_cc,$initial_reply_to,$initial_subject,@files,$from,$compose);
  35
  36 # Behavior modification variables
  37 my ($chain_reply_to, $smtp_server, $quiet, $suppress_from, $no_signed_off_cc) = (1, "localhost", 0, 0, 0);
  38
  39 # Example reply to:
  40 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
  41
  42 my $term = new Term::ReadLine 'git-send-email';
  43
  44 # Begin by accumulating all the variables (defined above), that we will end up
  45 # needing, first, from the command line:
  46
  47 my $rc = GetOptions("from=s" => \$from,
  48                     "in-reply-to=s" => \$initial_reply_to,
  49                     "subject=s" => \$initial_subject,
  50                     "to=s" => \@to,
  51                     "cc=s" => \@initial_cc,
  52                     "chain-reply-to!" => \$chain_reply_to,
  53                     "smtp-server=s" => \$smtp_server,
  54                     "compose" => \$compose,
  55                     "quiet" => \$quiet,
  56                     "suppress-from" => \$suppress_from,
  57                     "no-signed-off-cc" => \$no_signed_off_cc,
  58          );
  59
  60 # Now, let's fill any that aren't set in with defaults:
  61
  62 open(GITVAR,"-|","git-var","-l")
  63         or die "Failed to open pipe from git-var: $!";
  64
  65 my ($author,$committer);
  66 while(<GITVAR>) {
  67         chomp;
  68         my ($var,$data) = split /=/,$_,2;
  69         my @fields = split /\s+/, $data;
  70
  71         my $ident = join(" ", @fields[0...(@fields-3)]);
  72
  73         if ($var eq 'GIT_AUTHOR_IDENT') {
  74                 $author = $ident;
  75         } elsif ($var eq 'GIT_COMMITTER_IDENT') {
  76                 $committer = $ident;
  77         }
  78 }
  79 close(GITVAR);
  80
  81 my $prompting = 0;
  82 if (!defined $from) {
  83         $from = $author || $committer;
  84         do {
  85                 $_ = $term->readline("Who should the emails appear to be from? ",
  86                         $from);
  87         } while (!defined $_);
  88
  89         $from = $_;
  90         print "Emails will be sent from: ", $from, "\n";
  91         $prompting++;
  92 }
  93
  94 if (!@to) {
  95         do {
  96                 $_ = $term->readline("Who should the emails be sent to? ",
  97                                 "");
  98         } while (!defined $_);
  99         my $to = $_;
 100         push @to, split /,/, $to;
 101         $prompting++;
 102 }
 103
 104 if (!defined $initial_subject && $compose) {
 105         do {
 106                 $_ = $term->readline("What subject should the emails start with? ",
 107                         $initial_subject);
 108         } while (!defined $_);
 109         $initial_subject = $_;
 110         $prompting++;
 111 }
 112
 113 if (!defined $initial_reply_to && $prompting) {
 114         do {
 115                 $_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ",
 116                         $initial_reply_to);
 117         } while (!defined $_);
 118
 119         $initial_reply_to = $_;
 120         $initial_reply_to =~ s/(^\s+|\s+$)//g;
 121 }
 122
 123 if (!defined $smtp_server) {
 124         $smtp_server = "localhost";
 125 }
 126
 127 if ($compose) {
 128         # Note that this does not need to be secure, but we will make a small
 129         # effort to have it be unique
 130         open(C,">",$compose_filename)
 131                 or die "Failed to open for writing $compose_filename: $!";
 132         print C "From $from # This line is ignored.\n";
 133         printf C "Subject: %s\n\n", $initial_subject;
 134         printf C <<EOT;
 135 GIT: Please enter your email below.
 136 GIT: Lines beginning in "GIT: " will be removed.
 137 GIT: Consider including an overall diffstat or table of contents
 138 GIT: for the patch you are writing.
 139
 140 EOT
 141         close(C);
 142
 143         my $editor = $ENV{EDITOR};
 144         $editor = 'vi' unless defined $editor;
 145         system($editor, $compose_filename);
 146
 147         open(C2,">",$compose_filename . ".final")
 148                 or die "Failed to open $compose_filename.final : " . $!;
 149
 150         open(C,"<",$compose_filename)
 151                 or die "Failed to open $compose_filename : " . $!;
 152
 153         while(<C>) {
 154                 next if m/^GIT: /;
 155                 print C2 $_;
 156         }
 157         close(C);
 158         close(C2);
 159
 160         do {
 161                 $_ = $term->readline("Send this email? (y|n) ");
 162         } while (!defined $_);
 163
 164         if (uc substr($_,0,1) ne 'Y') {
 165                 cleanup_compose_files();
 166                 exit(0);
 167         }
 168
 169         @files = ($compose_filename . ".final");
 170 }
 171
 172
 173 # Now that all the defaults are set, process the rest of the command line
 174 # arguments and collect up the files that need to be processed.
 175 for my $f (@ARGV) {
 176         if (-d $f) {
 177                 opendir(DH,$f)
 178                         or die "Failed to opendir $f: $!";
 179
 180                 push @files, grep { -f $_ } map { +$f . "/" . $_ }
 181                                 sort readdir(DH);
 182
 183         } elsif (-f $f) {
 184                 push @files, $f;
 185
 186         } else {
 187                 print STDERR "Skipping $f - not found.\n";
 188         }
 189 }
 190
 191 if (@files) {
 192         unless ($quiet) {
 193                 print $_,"\n" for (@files);
 194         }
 195 } else {
 196         print <<EOT;
 197 git-send-email [options] <file | directory> [... file | directory ]
 198 Options:
 199    --from         Specify the "From:" line of the email to be sent.
 200
 201    --to           Specify the primary "To:" line of the email.
 202
 203    --cc           Specify an initial "Cc:" list for the entire series
 204                   of emails.
 205
 206    --compose      Use \$EDITOR to edit an introductory message for the
 207                   patch series.
 208
 209    --subject      Specify the initial "Subject:" line.
 210                   Only necessary if --compose is also set.  If --compose
 211                   is not set, this will be prompted for.
 212
 213    --in-reply-to  Specify the first "In-Reply-To:" header line.
 214                   Only used if --compose is also set.  If --compose is not
 215                   set, this will be prompted for.
 216
 217    --chain-reply-to If set, the replies will all be to the previous
 218                   email sent, rather than to the first email sent.
 219                   Defaults to on.
 220
 221    --no-signed-off-cc Suppress the automatic addition of email addresses
 222                  that appear in a Signed-off-by: line, to the cc: list.
 223                  Note: Using this option is not recommended.
 224
 225    --smtp-server  If set, specifies the outgoing SMTP server to use.
 226                   Defaults to localhost.
 227
 228   --suppress-from Supress sending emails to yourself if your address
 229                   appears in a From: line.
 230
 231    --quiet      Make git-send-email less verbose.  One line per email should be
 232                 all that is output.
 233
 234 Error: Please specify a file or a directory on the command line.
 235 EOT
 236         exit(1);
 237 }
 238
 239 # Variables we set as part of the loop over files
 240 our ($message_id, $cc, %mail, $subject, $reply_to, $message);
 241
 242
 243 # Usually don't need to change anything below here.
 244
 245 # we make a "fake" message id by taking the current number
 246 # of seconds since the beginning of Unix time and tacking on
 247 # a random number to the end, in case we are called quicker than
 248 # 1 second since the last time we were called.
 249
 250 # We'll setup a template for the message id, using the "from" address:
 251 my $message_id_from = Email::Valid->address($from);
 252 my $message_id_template = "<%s-git-send-email-$message_id_from>";
 253
 254 sub make_message_id
 255 {
 256         my $date = `date "+\%s"`;
 257         chomp($date);
 258         my $pseudo_rand = int (rand(4200));
 259         $message_id = sprintf $message_id_template, "$date$pseudo_rand";
 260         #print "new message id = $message_id\n"; # Was useful for debugging
 261 }
 262
 263
 264
 265 $cc = "";
 266
 267 sub send_message
 268 {
 269         my $to = join (", ", unique_email_list(@to));
 270
 271         %mail = (       To      =>      $to,
 272                         From    =>      $from,
 273                         CC      =>      $cc,
 274                         Subject =>      $subject,
 275                         Message =>      $message,
 276                         'Reply-to'      =>      $from,
 277                         'In-Reply-To'   =>      $reply_to,
 278                         'Message-ID'    =>      $message_id,
 279                         'X-Mailer'      =>      "git-send-email",
 280                 );
 281
 282         $mail{smtp} = $smtp_server;
 283         $mailcfg{mime} = 0;
 284
 285         #print Data::Dumper->Dump([\%mail],[qw(*mail)]);
 286
 287         sendmail(%mail) or die $Mail::Sendmail::error;
 288
 289         if ($quiet) {
 290                 printf "Sent %s\n", $subject;
 291         } else {
 292                 print "OK. Log says:\n", $Mail::Sendmail::log;
 293                 print "\n\n"
 294         }
 295 }
 296
 297
 298 $reply_to = $initial_reply_to;
 299 make_message_id();
 300 $subject = $initial_subject;
 301
 302 foreach my $t (@files) {
 303         open(F,"<",$t) or die "can't open file $t";
 304
 305         @cc = @initial_cc;
 306         my $found_mbox = 0;
 307         my $header_done = 0;
 308         $message = "";
 309         while(<F>) {
 310                 if (!$header_done) {
 311                         $found_mbox = 1, next if (/^From /);
 312                         chomp;
 313
 314                         if ($found_mbox) {
 315                                 if (/^Subject:\s+(.*)$/) {
 316                                         $subject = $1;
 317
 318                                 } elsif (/^(Cc|From):\s+(.*)$/) {
 319                                         next if ($2 eq $from && $suppress_from);
 320                                         printf("(mbox) Adding cc: %s from line '%s'\n",
 321                                                 $2, $_) unless $quiet;
 322                                         push @cc, $2;
 323                                 }
 324
 325                         } else {
 326                                 # In the traditional
 327                                 # "send lots of email" format,
 328                                 # line 1 = cc
 329                                 # line 2 = subject
 330                                 # So let's support that, too.
 331                                 if (@cc == 0) {
 332                                         printf("(non-mbox) Adding cc: %s from line '%s'\n",
 333                                                 $_, $_) unless $quiet;
 334
 335                                         push @cc, $_;
 336
 337                                 } elsif (!defined $subject) {
 338                                         $subject = $_;
 339                                 }
 340                         }
 341
 342                         # A whitespace line will terminate the headers
 343                         if (m/^\s*$/) {
 344                                 $header_done = 1;
 345                         }
 346                 } else {
 347                         $message .=  $_;
 348                         if (/^Signed-off-by: (.*)$/i && !$no_signed_off_cc) {
 349                                 my $c = $1;
 350                                 chomp $c;
 351                                 push @cc, $c;
 352                                 printf("(sob) Adding cc: %s from line '%s'\n",
 353                                         $c, $_) unless $quiet;
 354                         }
 355                 }
 356         }
 357         close F;
 358
 359         $cc = join(", ", unique_email_list(@cc));
 360
 361         send_message();
 362
 363         # set up for the next message
 364         if ($chain_reply_to || length($reply_to) == 0) {
 365                 $reply_to = $message_id;
 366         }
 367         make_message_id();
 368 }
 369
 370 if ($compose) {
 371         cleanup_compose_files();
 372 }
 373
 374 sub cleanup_compose_files() {
 375         unlink($compose_filename, $compose_filename . ".final");
 376
 377 }
 378
 379
 380
 381 sub unique_email_list(@) {
 382         my %seen;
 383         my @emails;
 384
 385         foreach my $entry (@_) {
 386                 my $clean = Email::Valid->address($entry);
 387                 next if $seen{$clean}++;
 388                 push @emails, $entry;
 389         }
 390         return @emails;
 391 }