summaryrefslogtreecommitdiff
path: root/git-send-email.perl
blob: ec1428d961206f12e195274aea6ea3ae52374898 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
#!/usr/bin/perl -w
#
# 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 strict;
use warnings;
use Term::ReadLine;
use Mail::Sendmail qw(sendmail %mailcfg);
use Getopt::Long;
use Data::Dumper;
use Email::Valid;

sub unique_email_list(@);
sub cleanup_compose_files();

# Constants (essentially)
my $compose_filename = ".msg.$$";

# Variables we fill in automatically, or via prompting:
my (@to,@cc,$initial_reply_to,$initial_subject,@files,$from,$compose);

# Behavior modification variables
my ($chain_reply_to, $smtp_server) = (1, "localhost");

# Example reply to:
#$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';

my $term = new Term::ReadLine 'git-send-email';

# Begin by accumulating all the variables (defined above), that we will end up
# needing, first, from the command line:

my $rc = GetOptions("from=s" => \$from,
                    "in-reply-to=s" => \$initial_reply_to,
		    "subject=s" => \$initial_subject,
		    "to=s" => \@to,
		    "chain-reply-to!" => \$chain_reply_to,
		    "smtp-server=s" => \$smtp_server,
		    "compose" => \$compose,
	 );

# Now, let's fill any that aren't set in with defaults:

open(GITVAR,"-|","git-var","-l")
	or die "Failed to open pipe from git-var: $!";

my ($author,$committer);
while(<GITVAR>) {
	chomp;
	my ($var,$data) = split /=/,$_,2;
	my @fields = split /\s+/, $data;

	my $ident = join(" ", @fields[0...(@fields-3)]);

	if ($var eq 'GIT_AUTHOR_IDENT') {
		$author = $ident;
	} elsif ($var eq 'GIT_COMMITTER_IDENT') {
		$committer = $ident;
	}
}
close(GITVAR);

my $prompting = 0;
if (!defined $from) {
	$from = $author || $committer;
	do {
		$_ = $term->readline("Who should the emails appear to be from? ",
			$from);
	} while (!defined $_);

	$from = $_;
	print "Emails will be sent from: ", $from, "\n";
	$prompting++;
}

if (!@to) {
	do {
		$_ = $term->readline("Who should the emails be sent to? ",
				"");
	} while (!defined $_);
	my $to = $_;
	push @to, split /,/, $to;
	$prompting++;
}

if (!defined $initial_subject && $compose) {
	do {
		$_ = $term->readline("What subject should the emails start with? ",
			$initial_subject);
	} while (!defined $_);
	$initial_subject = $_;
	$prompting++;
}

if (!defined $initial_reply_to && $prompting) {
	do {
		$_= $term->readline("Message-ID to be used as In-Reply-To for the first email? ",
			$initial_reply_to);
	} while (!defined $_);

	$initial_reply_to = $_;
	$initial_reply_to =~ s/(^\s+|\s+$)//g;
}

if (!defined $smtp_server) {
	$smtp_server = "localhost";
}

if ($compose) {
	# Note that this does not need to be secure, but we will make a small
	# effort to have it be unique
	open(C,">",$compose_filename)
		or die "Failed to open for writing $compose_filename: $!";
	print C "From \n";
	printf C "Subject: %s\n\n", $initial_subject;
	printf C <<EOT;
GIT: Please enter your email below.
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.

EOT
	close(C);

	my $editor = $ENV{EDITOR};
	$editor = 'vi' unless defined $editor;
	system($editor, $compose_filename);

	open(C2,">",$compose_filename . ".final")
		or die "Failed to open $compose_filename.final : " . $!;

	open(C,"<",$compose_filename)
		or die "Failed to open $compose_filename : " . $!;

	while(<C>) {
		next if m/^GIT: /;
		print C2 $_;
	}
	close(C);
	close(C2);

	do {
		$_ = $term->readline("Send this email? (y|n) ");
	} while (!defined $_);

	if (uc substr($_,0,1) ne 'Y') {
		cleanup_compose_files();
		exit(0);
	}

	@files = ($compose_filename . ".final");
}


# 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.
for my $f (@ARGV) {
	if (-d $f) {
		opendir(DH,$f)
			or die "Failed to opendir $f: $!";

		push @files, grep { -f $_ } map { +$f . "/" . $_ }
				sort readdir(DH);

	} elsif (-f $f) {
		push @files, $f;

	} else {
		print STDERR "Skipping $f - not found.\n";
	}
}

if (@files) {
	print $_,"\n" for @files;
} else {
	print <<EOT;
git-send-email [options] <file | directory> [... file | directory ]
Options:
   --from         Specify the "From:" line of the email to be sent.

   --to           Specify the primary "To:" line of the email.

   --compose      Use \$EDITOR to edit an introductory message for the
                  patch series.

   --subject      Specify the initial "Subject:" line.
                  Only necessary if --compose is also set.  If --compose
		  is not set, this will be prompted for.

   --in-reply-to  Specify the first "In-Reply-To:" header line.
                  Only used if --compose is also set.  If --compose is not
		  set, this will be prompted for.

   --chain-reply-to If set, the replies will all be to the previous
                  email sent, rather than to the first email sent.
                  Defaults to on.

   --smtp-server  If set, specifies the outgoing SMTP server to use.
                  Defaults to localhost.

Error: Please specify a file or a directory on the command line.
EOT
	exit(1);
}

# Variables we set as part of the loop over files
our ($message_id, $cc, %mail, $subject, $reply_to, $message);


# 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 $message_id_from = Email::Valid->address($from);
my $message_id_template = "<%s-git-send-email-$message_id_from>";

sub make_message_id
{
	my $date = `date "+\%s"`;
	chomp($date);
	my $pseudo_rand = int (rand(4200));
	$message_id = sprintf $message_id_template, "$date$pseudo_rand";
	#print "new message id = $message_id\n"; # Was useful for debugging
}



$cc = "";

sub send_message
{
	my $to = join (", ", unique_email_list(@to));

	%mail = (	To	=>	$to,
			From	=>	$from,
			CC	=>	$cc,
			Subject	=>	$subject,
			Message	=>	$message,
			'Reply-to'	=>	$from,
			'In-Reply-To'	=>	$reply_to,
			'Message-ID'	=>	$message_id,
			'X-Mailer'	=>	"git-send-email",
		);

	$mail{smtp} = $smtp_server;
	$mailcfg{mime} = 0;

	#print Data::Dumper->Dump([\%mail],[qw(*mail)]);

	sendmail(%mail) or die $Mail::Sendmail::error;

	print "OK. Log says:\n", $Mail::Sendmail::log;
	print "\n\n"
}


$reply_to = $initial_reply_to;
make_message_id();
$subject = $initial_subject;

foreach my $t (@files) {
	my $F = $t;
	open(F,"<",$t) or die "can't open file $t";

	@cc = ();
	my $found_mbox = 0;
	my $header_done = 0;
	$message = "";
	while(<F>) {
		if (!$header_done) {
			$found_mbox = 1, next if (/^From /);
			chomp;

			if ($found_mbox) {
				if (/^Subject:\s+(.*)$/) {
					$subject = $1;

				} elsif (/^(Cc|From):\s+(.*)$/) {
					printf("(mbox) Adding cc: %s from line '%s'\n",
						$2, $_);
					push @cc, $2;
				}

			} else {
				# In the traditional
				# "send lots of email" format,
				# line 1 = cc
				# line 2 = subject
				# So let's support that, too.
				if (@cc == 0) {
					printf("(non-mbox) Adding cc: %s from line '%s'\n",
						$_, $_);

					push @cc, $_;

				} elsif (!defined $subject) {
					$subject = $_;
				}
			}

			# A whitespace line will terminate the headers
			if (m/^\s*$/) {
				$header_done = 1;
			}
		} else {
			$message .=  $_;
			if (/^Signed-off-by: (.*)$/i) {
				my $c = $1;
				chomp $c;
				push @cc, $c;
				printf("(sob) Adding cc: %s from line '%s'\n",
					$c, $_);
			}
		}
	}
	close F;

	$cc = join(", ", unique_email_list(@cc));

	send_message();

	# set up for the next message
	if ($chain_reply_to || length($reply_to) == 0) {
		$reply_to = $message_id;
	}
	make_message_id();
}

if ($compose) {
	cleanup_compose_files();
}

sub cleanup_compose_files() {
	unlink($compose_filename, $compose_filename . ".final");

}



sub unique_email_list(@) {
	my %seen;
	my @emails;

	foreach my $entry (@_) {
		my $clean = Email::Valid->address($entry);
		next if $seen{$clean}++;
		push @emails, $entry;
	}
	return @emails;
}