send-email: Don't leak To: headers between patches

If the first patch in a series has a To: header in the file and the
second patch in the series doesn't the address from the first patch will
be part of the To: addresses in the second patch. Fix this by treating the
to list like the cc list. Have an initial to list come from the command
line, user input and config options. Then build up a to list from each
patch and concatenate the two together before sending the patch. Finally,
reset the list after sending each patch so the To: headers from a patch
don't get used for the next one.

Reported-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-send-email.perl b/git-send-email.perl
index d6028ec7b4ba6d172870c3a6b8e12f03c9a4fd04..7f9eacd16c0b195fab058dbe4215cf35b43d2465 100755 (executable)
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -138,7 +138,7 @@ sub unique_email_list(@);
 sub cleanup_compose_files();
 
 # Variables we fill in automatically, or via prompting:
-my (@to,$no_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
+my (@to,$no_to,@initial_to,@cc,$no_cc,@initial_cc,@bcclist,$no_bcc,@xh,
        $initial_reply_to,$initial_subject,@files,
        $author,$sender,$smtp_authpass,$annotate,$compose,$time);
 
@@ -213,7 +213,7 @@ my %config_settings = (
     "smtpuser" => \$smtp_authuser,
     "smtppass" => \$smtp_authpass,
        "smtpdomain" => \$smtp_domain,
-    "to" => \@to,
+    "to" => \@initial_to,
     "cc" => \@initial_cc,
     "cccmd" => \$cc_cmd,
     "aliasfiletype" => \$aliasfiletype,
@@ -271,7 +271,7 @@ $SIG{INT}  = \&signal_handler;
 my $rc = GetOptions("sender|from=s" => \$sender,
                     "in-reply-to=s" => \$initial_reply_to,
                    "subject=s" => \$initial_subject,
-                   "to=s" => \@to,
+                   "to=s" => \@initial_to,
                    "no-to" => \$no_to,
                    "cc=s" => \@initial_cc,
                    "no-cc" => \$no_cc,
@@ -409,7 +409,7 @@ my ($repoauthor, $repocommitter);
 
 # Verify the user input
 
-foreach my $entry (@to) {
+foreach my $entry (@initial_to) {
        die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
 }
 
@@ -711,9 +711,9 @@ if (!defined $sender) {
        $prompting++;
 }
 
-if (!@to) {
+if (!@initial_to) {
        my $to = ask("Who should the emails be sent to? ");
-       push @to, parse_address_line($to) if defined $to; # sanitized/validated later
+       push @initial_to, parse_address_line($to) if defined $to; # sanitized/validated later
        $prompting++;
 }
 
@@ -731,8 +731,8 @@ sub expand_one_alias {
        return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 }
 
-@to = expand_aliases(@to);
-@to = (map { sanitize_address($_) } @to);
+@initial_to = expand_aliases(@initial_to);
+@initial_to = (map { sanitize_address($_) } @initial_to);
 @initial_cc = expand_aliases(@initial_cc);
 @bcclist = expand_aliases(@bcclist);
 
@@ -1136,6 +1136,7 @@ foreach my $t (@files) {
        my $author_encoding;
        my $has_content_type;
        my $body_encoding;
+       @to = ();
        @cc = ();
        @xh = ();
        my $input_format = undef;
@@ -1300,6 +1301,7 @@ foreach my $t (@files) {
                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num == 1));
        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured && @cc);
 
+       @to = (@initial_to, @to);
        @cc = (@initial_cc, @cc);
 
        my $message_was_sent = send_message();

diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index 294e31f7f005e3253774794e95eac5ffe9f2618f..13d8d1a8b4f70fa7813c7aff42ca040b9da3c8bb 100755 (executable)
--- a/t/t9001-send-email.sh
+++ b/t/t9001-send-email.sh
@@ -971,6 +971,21 @@ test_expect_success $PREREQ 'patches To headers are appended to' '
        grep "RCPT TO:<nobody@example.com>" stdout
 '
 
+test_expect_success $PREREQ 'To headers from files reset each patch' '
+       patch1=`git format-patch -1 --to="bodies@example.com"` &&
+       patch2=`git format-patch -1 --to="other@example.com" HEAD~` &&
+       test_when_finished "rm $patch1 && rm $patch2" &&
+       git send-email \
+               --dry-run \
+               --from="Example <nobody@example.com>" \
+               --to="nobody@example.com" \
+               --smtp-server relay.example.com \
+               $patch1 $patch2 >stdout &&
+       test $(grep -c "RCPT TO:<bodies@example.com>" stdout) = 1 &&
+       test $(grep -c "RCPT TO:<nobody@example.com>" stdout) = 2 &&
+       test $(grep -c "RCPT TO:<other@example.com>" stdout) = 1
+'
+
 test_expect_success $PREREQ 'setup expect' '
 cat >email-using-8bit <<EOF
 From fe6ecc66ece37198fe5db91fa2fc41d9f4fe5cc4 Mon Sep 17 00:00:00 2001