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