Merge master branch changes into release candidate branch.
[git] / git-send-email-script
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
29 # Variables we fill in automatically, or via prompting:
30 my (@to,@cc,$initial_reply_to,$initial_subject,@files,$from);
31
32 # Behavior modification variables
33 my ($chain_reply_to, $smtp_server) = (1, "localhost");
34
35 # Example reply to:
36 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
37
38 my $term = new Term::ReadLine 'git-send-email';
39
40 # Begin by accumulating all the variables (defined above), that we will end up
41 # needing, first, from the command line:
42
43 my $rc = GetOptions("from=s" => \$from,
44                     "in-reply-to=s" => \$initial_reply_to,
45                     "subject=s" => \$initial_subject,
46                     "to=s" => \@to,
47                     "chain-reply-to!" => \$chain_reply_to,
48                     "smtp-server=s" => \$smtp_server,
49          );
50
51 # Now, let's fill any that aren't set in with defaults:
52
53 open(GITVAR,"-|","git-var","-l")
54         or die "Failed to open pipe from git-var: $!";
55
56 my ($author,$committer);
57 while(<GITVAR>) {
58         chomp;
59         my ($var,$data) = split /=/,$_,2;
60         my @fields = split /\s+/, $data;
61
62         my $ident = join(" ", @fields[0...(@fields-3)]);
63
64         if ($var eq 'GIT_AUTHOR_IDENT') {
65                 $author = $ident;
66         } elsif ($var eq 'GIT_COMMITTER_IDENT') {
67                 $committer = $ident;
68         }
69 }
70 close(GITVAR);
71
72
73 if (!defined $from) {
74         $from = $author || $committer;
75         do {
76                 $_ = $term->readline("Who should the emails appear to be from? ",
77                         $from);
78         } while (!defined $_);
79
80         $from = $_;
81         print "Emails will be sent from: ", $from, "\n";
82 }
83
84 if (!@to) {
85         do {
86                 $_ = $term->readline("Who should the emails be sent to? ",
87                                 "");
88         } while (!defined $_);
89         my $to = $_;
90         push @to, split /,/, $to;
91 }
92
93 if (!defined $initial_subject) {
94         do {
95                 $_ = $term->readline("What subject should the emails start with? ",
96                         $initial_subject);
97         } while (!defined $_);
98         $initial_subject = $_;
99 }
100
101 if (!defined $initial_reply_to) {
102         do {
103                 $_= $term->readline("Message-ID to be used as In-Reply-To? ",
104                         $initial_reply_to);
105         } while (!defined $_);
106
107         $initial_reply_to = $_;
108         $initial_reply_to =~ s/(^\s+|\s+$)//g;
109 }
110
111 if (!defined $smtp_server) {
112         $smtp_server = "localhost";
113 }
114
115 # Now that all the defaults are set, process the rest of the command line
116 # arguments and collect up the files that need to be processed.
117 for my $f (@ARGV) {
118         if (-d $f) {
119                 opendir(DH,$f)
120                         or die "Failed to opendir $f: $!";
121
122                 push @files, grep { -f $_ } map { +$f . "/" . $_ }
123                                 sort readdir(DH);
124
125         } elsif (-f $f) {
126                 push @files, $f;
127
128         } else {
129                 print STDERR "Skipping $f - not found.\n";
130         }
131 }
132
133 if (@files) {
134         print $_,"\n" for @files;
135 } else {
136         print <<EOT;
137 git-send-email-script [options] <file | directory> [... file | directory ]
138 Options:
139    --from         Specify the "From:" line of the email to be sent.
140    --to           Specify the primary "To:" line of the email.
141    --subject      Specify the initial "Subject:" line.
142    --in-reply-to  Specify the first "In-Reply-To:" header line.
143    --chain-reply-to If set, the replies will all be to the previous
144                   email sent, rather than to the first email sent.
145                   Defaults to on.
146    --smtp-server  If set, specifies the outgoing SMTP server to use.
147                   Defaults to localhost.
148
149 Error: Please specify a file or a directory on the command line.
150 EOT
151         exit(1);
152 }
153
154 # Variables we set as part of the loop over files
155 our ($message_id, $cc, %mail, $subject, $reply_to, $message);
156
157
158 # Usually don't need to change anything below here.
159
160 # we make a "fake" message id by taking the current number
161 # of seconds since the beginning of Unix time and tacking on
162 # a random number to the end, in case we are called quicker than
163 # 1 second since the last time we were called.
164
165 # We'll setup a template for the message id, using the "from" address:
166 my $message_id_from = Email::Valid->address($from);
167 my $message_id_template = "<%s-git-send-email-$message_id_from>";
168
169 sub make_message_id
170 {
171         my $date = `date "+\%s"`;
172         chomp($date);
173         my $pseudo_rand = int (rand(4200));
174         $message_id = sprintf $message_id_template, "$date$pseudo_rand";
175         #print "new message id = $message_id\n"; # Was useful for debugging
176 }
177
178
179
180 $cc = "";
181
182 sub send_message
183 {
184         my $to = join (", ", unique_email_list(@to));
185
186         %mail = (       To      =>      $to,
187                         From    =>      $from,
188                         CC      =>      $cc,
189                         Subject =>      $subject,
190                         Message =>      $message,
191                         'Reply-to'      =>      $from,
192                         'In-Reply-To'   =>      $reply_to,
193                         'Message-ID'    =>      $message_id,
194                         'X-Mailer'      =>      "git-send-email-script",
195                 );
196
197         $mail{smtp} = $smtp_server;
198         $mailcfg{mime} = 0;
199
200         #print Data::Dumper->Dump([\%mail],[qw(*mail)]);
201
202         sendmail(%mail) or die $Mail::Sendmail::error;
203
204         print "OK. Log says:\n", $Mail::Sendmail::log;
205         print "\n\n"
206 }
207
208
209 $reply_to = $initial_reply_to;
210 make_message_id();
211 $subject = $initial_subject;
212
213 foreach my $t (@files) {
214         my $F = $t;
215         open(F,"<",$t) or die "can't open file $t";
216
217         @cc = ();
218         my $found_mbox = 0;
219         my $header_done = 0;
220         $message = "";
221         while(<F>) {
222                 if (!$header_done) {
223                         $found_mbox = 1, next if (/^From /);
224                         chomp;
225
226                         if ($found_mbox) {
227                                 if (/^Subject:\s+(.*)$/) {
228                                         $subject = $1;
229
230                                 } elsif (/^(Cc|From):\s+(.*)$/) {
231                                         printf("(mbox) Adding cc: %s from line '%s'\n",
232                                                 $2, $_);
233                                         push @cc, $2;
234                                 }
235
236                         } else {
237                                 # In the traditional
238                                 # "send lots of email" format,
239                                 # line 1 = cc
240                                 # line 2 = subject
241                                 # So let's support that, too.
242                                 if (@cc == 0) {
243                                         printf("(non-mbox) Adding cc: %s from line '%s'\n",
244                                                 $_, $_);
245
246                                         push @cc, $_;
247
248                                 } elsif (!defined $subject) {
249                                         $subject = $_;
250                                 }
251                         }
252
253                         # A whitespace line will terminate the headers
254                         if (m/^\s*$/) {
255                                 $header_done = 1;
256                         }
257                 } else {
258                         $message .=  $_;
259                         if (/^Signed-off-by: (.*)$/i) {
260                                 my $c = $1;
261                                 chomp $c;
262                                 push @cc, $c;
263                                 printf("(sob) Adding cc: %s from line '%s'\n",
264                                         $c, $_);
265                         }
266                 }
267         }
268         close F;
269
270         $cc = join(", ", unique_email_list(@cc));
271
272         send_message();
273
274         # set up for the next message
275         if ($chain_reply_to || length($reply_to) == 0) {
276                 $reply_to = $message_id;
277         }
278         make_message_id();
279 }
280
281
282 sub unique_email_list(@) {
283         my %seen;
284         my @emails;
285
286         foreach my $entry (@_) {
287                 my $clean = Email::Valid->address($entry);
288                 next if $seen{$clean}++;
289                 push @emails, $entry;
290         }
291         return @emails;
292 }