send-email: make --suppress-cc=self sanitize input

--suppress-cc=self fails to filter sender address in many cases where it
needs to be sanitized in some way, for example quoted:
"A U. Thor" <author@example.com>
To fix, make send-email sanitize both sender and the address it is
compared against.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-send-email.perl b/git-send-email.perl
index d8344368b6105245ef02921e40147c40f1873012..7d886958ae04a617ecb9dea7628057638dcbfc9b 100755 (executable)
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -759,6 +759,11 @@ if (!defined $sender) {
        $sender = $repoauthor || $repocommitter || '';
 }
 
+# $sender could be an already sanitized address
+# (e.g. sendemail.from could be manually sanitized by user).
+# But it's a no-op to run sanitize_address on an already sanitized address.
+$sender = sanitize_address($sender);
+
 my $prompting = 0;
 if (!@initial_to && !defined $to_cmd) {
        my $to = ask("Who should the emails be sent to (if any)? ",
@@ -1071,10 +1076,9 @@ sub send_message {
        if ($cc ne '') {
                $ccline = "\nCc: $cc";
        }
-       my $sanitized_sender = sanitize_address($sender);
        make_message_id() unless defined($message_id);
 
-       my $header = "From: $sanitized_sender
+       my $header = "From: $sender
 To: $to${ccline}
 Subject: $subject
 Date: $date
@@ -1091,7 +1095,7 @@ X-Mailer: git-send-email $gitversion
        }
 
        my @sendmail_parameters = ('-i', @recipients);
-       my $raw_from = $sanitized_sender;
+       my $raw_from = $sender;
        if (defined $envelope_sender && $envelope_sender ne "auto") {
                $raw_from = $envelope_sender;
        }
@@ -1292,8 +1296,9 @@ foreach my $t (@files) {
                        }
                        elsif (/^From:\s+(.*)$/i) {
                                ($author, $author_encoding) = unquote_rfc2047($1);
+                               my $sauthor = sanitize_address($author);
                                next if $suppress_cc{'author'};
-                               next if $suppress_cc{'self'} and $author eq $sender;
+                               next if $suppress_cc{'self'} and $sauthor eq $sender;
                                printf("(mbox) Adding cc: %s from line '%s'\n",
                                        $1, $_) unless $quiet;
                                push @cc, $1;
@@ -1307,7 +1312,9 @@ foreach my $t (@files) {
                        }
                        elsif (/^Cc:\s+(.*)$/i) {
                                foreach my $addr (parse_address_line($1)) {
-                                       if (unquote_rfc2047($addr) eq $sender) {
+                                       my $qaddr = unquote_rfc2047($addr);
+                                       my $saddr = sanitize_address($qaddr);
+                                       if ($saddr eq $sender) {
                                                next if ($suppress_cc{'self'});
                                        } else {
                                                next if ($suppress_cc{'cc'});
@@ -1354,7 +1361,8 @@ foreach my $t (@files) {
                        chomp;
                        my ($what, $c) = ($1, $2);
                        chomp $c;
-                       if ($c eq $sender) {
+                       my $sc = sanitize_address($c);
+                       if ($sc eq $sender) {
                                next if ($suppress_cc{'self'});
                        } else {
                                next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
@@ -1438,7 +1446,6 @@ foreach my $t (@files) {
 sub recipients_cmd {
        my ($prefix, $what, $cmd, $file) = @_;
 
-       my $sanitized_sender = sanitize_address($sender);
        my @addresses = ();
        open my $fh, "-|", "$cmd \Q$file\E"
            or die "($prefix) Could not execute '$cmd'";
@@ -1446,7 +1453,7 @@ sub recipients_cmd {
                $address =~ s/^\s*//g;
                $address =~ s/\s*$//g;
                $address = sanitize_address($address);
-               next if ($address eq $sanitized_sender and $suppress_cc{'self'});
+               next if ($address eq $sender and $suppress_cc{'self'});
                push @addresses, $address;
                printf("($prefix) Adding %s: %s from: '%s'\n",
                       $what, $address, $cmd) unless $quiet;