git@vger.kernel.org list mirror (unofficial, one of many)
 help / color / Atom feed
From: Ævar Arnfjörð Bjarmason  <avarab@gmail.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>,
	Stephen Boyd <swboyd@chromium.org>,
	jrnieder@gmail.com, sandals@crustytoothpaste.net,
	sunshine@sunshineco.com, xypron.glpk@gmx.de,
	Paolo Bonzini <pbonzini@redhat.com>,
	Ævar Arnfjörð Bjarmason  <avarab@gmail.com>
Subject: [PATCH 4/5] send-email: fix regression in sendemail.identity parsing
Date: Fri, 17 May 2019 21:55:44 +0200
Message-ID: <20190517195545.29729-5-avarab@gmail.com> (raw)
In-Reply-To: <xmqqsgtd3fw3.fsf@gitster-ct.c.googlers.com>

Fix a regression in my recent 3494dfd3ee ("send-email: do defaults ->
config -> getopt in that order", 2019-05-09). I missed that the
$identity variable needs to be extracted from the command-line before
we do the config reading, as it determines which config variable we
should read first. See [1] for the report.

The sendemail.identity feature was added back in
34cc60ce2b ("send-email: Add support for SSL and SMTP-AUTH",
2007-09-03), there were no tests to assert that it worked properly.

So let's fix both the regression, and add some tests to assert that
this is being parsed properly. While I'm at it I'm adding a
--no-identity option to go with --[to|cc|bcc] variable, since the
semantics are similar. It's like to/cc/bcc except that unlike those we
don't support multiple identities, but we could now easily add it
support for it if anyone cares.

In just fixing the --identity command-line parsing bug I discovered
that a narrow fix to that wouldn't do. In read_config() we had a state
machine that would only set config values if they weren't set already,
and thus by proxy we wouldn't e.g. set "to" based on sendemail.to if
we'd seen sendemail.gmail.to before, with --identity=gmail.

I'd modified some of the relevant code in 3494dfd3ee, but just
reverting to that wouldn't do, since it would bring back the
regression fixed in that commit.

Refactor read_config() do what we actually mean here. We don't want to
set a given sendemail.VAR if a sendemail.$identity.VAR previously set
it. The old code was conflating this desire with the hardcoded
defaults for these variables, and as discussed in 3494dfd3ee that was
never going to work. Instead pass along the state of whether an
identity config set something before, as distinguished from the state
of the default just being false, or the default being a non-bool or
true (e.g. --transferencoding).

I'm still not happy with the test coverage here, e.g. there's nothing
testing sendemail.smtpEncryption, but I only have so much time to fix
this code.

1. https://public-inbox.org/git/5cddeb61.1c69fb81.47ed4.e648@mx.google.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 Documentation/git-send-email.txt |  4 ++
 git-send-email.perl              | 60 ++++++++++++++++++++----------
 t/t9001-send-email.sh            | 64 ++++++++++++++++++++++++++++++++
 3 files changed, 108 insertions(+), 20 deletions(-)

diff --git a/Documentation/git-send-email.txt b/Documentation/git-send-email.txt
index 8100ff4b0f..a861934c69 100644
--- a/Documentation/git-send-email.txt
+++ b/Documentation/git-send-email.txt
@@ -282,6 +282,10 @@ Automating
 	Clears any list of "To:", "Cc:", "Bcc:" addresses previously
 	set via config.
 
+--no-identity::
+	Clears the previously read value of `sendemail.identity` set
+	via config, if any.
+
 --to-cmd=<command>::
 	Specify a command to execute once per patch file which
 	should generate patch file specific "To:" entries.
diff --git a/git-send-email.perl b/git-send-email.perl
index b2c4a77671..80cbbfd2b8 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -182,7 +182,7 @@ sub format_2822_time {
 	$author,$sender,$smtp_authpass,$annotate,$compose,$time);
 # Things we either get from config, *or* are overridden on the
 # command-line.
-my ($no_cc, $no_to, $no_bcc);
+my ($no_cc, $no_to, $no_bcc, $no_identity);
 my (@config_to, @getopt_to);
 my (@config_cc, @getopt_cc);
 my (@config_bcc, @getopt_bcc);
@@ -325,44 +325,53 @@ sub signal_handler {
 
 # Read our sendemail.* config
 sub read_config {
-	my ($prefix) = @_;
+	my ($configured, $prefix) = @_;
 
 	foreach my $setting (keys %config_bool_settings) {
 		my $target = $config_bool_settings{$setting};
 		my $v = Git::config_bool(@repo, "$prefix.$setting");
-		$$target = $v if defined $v;
+		next unless defined $v;
+		next if $configured->{$setting}++;
+		$$target = $v;
 	}
 
 	foreach my $setting (keys %config_path_settings) {
 		my $target = $config_path_settings{$setting};
 		if (ref($target) eq "ARRAY") {
-			unless (@$target) {
-				my @values = Git::config_path(@repo, "$prefix.$setting");
-				@$target = @values if (@values && defined $values[0]);
-			}
+			my @values = Git::config_path(@repo, "$prefix.$setting");
+			next unless @values;
+			next if $configured->{$setting}++;
+			@$target = @values;
 		}
 		else {
 			my $v = Git::config_path(@repo, "$prefix.$setting");
-			$$target = $v if defined $v;
+			next unless defined $v;
+			next if $configured->{$setting}++;
+			$$target = $v;
 		}
 	}
 
 	foreach my $setting (keys %config_settings) {
 		my $target = $config_settings{$setting};
 		if (ref($target) eq "ARRAY") {
-			unless (@$target) {
-				my @values = Git::config(@repo, "$prefix.$setting");
-				@$target = @values if (@values && defined $values[0]);
-			}
+			my @values = Git::config(@repo, "$prefix.$setting");
+			next unless @values;
+			next if $configured->{$setting}++;
+			@$target = @values;
 		}
 		else {
 			my $v = Git::config(@repo, "$prefix.$setting");
-			$$target = $v if defined $v;
+			next unless defined $v;
+			next if $configured->{$setting}++;
+			$$target = $v;
 		}
 	}
 
 	if (!defined $smtp_encryption) {
-		my $enc = Git::config(@repo, "$prefix.smtpencryption");
+		my $setting = "$prefix.smtpencryption";
+		my $enc = Git::config(@repo, $setting);
+		return unless defined $enc;
+		return if $configured->{$setting}++;
 		if (defined $enc) {
 			$smtp_encryption = $enc;
 		} elsif (Git::config_bool(@repo, "$prefix.smtpssl")) {
@@ -371,17 +380,30 @@ sub read_config {
 	}
 }
 
+# sendemail.identity yields to --identity. We must parse this
+# special-case first before the rest of the config is read.
 $identity = Git::config(@repo, "sendemail.identity");
-read_config("sendemail.$identity") if defined $identity;
-read_config("sendemail");
+my $rc = GetOptions(
+	"identity=s" => \$identity,
+	"no-identity" => \$no_identity,
+);
+usage() unless $rc;
+undef $identity if $no_identity;
+
+# Now we know enough to read the config
+{
+    my %configured;
+    read_config(\%configured, "sendemail.$identity") if defined $identity;
+    read_config(\%configured, "sendemail");
+}
 
 # Begin by accumulating all the variables (defined above), that we will end up
 # needing, first, from the command line:
 
 my $help;
 my $git_completion_helper;
-my $rc = GetOptions("h" => \$help,
-                    "dump-aliases" => \$dump_aliases);
+$rc = GetOptions("h" => \$help,
+                 "dump-aliases" => \$dump_aliases);
 usage() unless $rc;
 die __("--dump-aliases incompatible with other options\n")
     if !$help and $dump_aliases and @ARGV;
@@ -410,8 +432,6 @@ sub read_config {
 		    "smtp-debug:i" => \$debug_net_smtp,
 		    "smtp-domain:s" => \$smtp_domain,
 		    "smtp-auth=s" => \$smtp_auth,
-		    "no-smtp-auth" => sub {$smtp_auth = 'none'},
-		    "identity=s" => \$identity,
 		    "annotate!" => \$annotate,
 		    "no-annotate" => sub {$annotate = 0},
 		    "compose" => \$compose,
diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index 61d484d1a6..890e2874c3 100755
--- a/t/t9001-send-email.sh
+++ b/t/t9001-send-email.sh
@@ -1228,6 +1228,61 @@ test_expect_success $PREREQ 'sendemail.to works' '
 	grep "To: Somebody <somebody@ex.com>" stdout
 '
 
+test_expect_success $PREREQ 'setup sendemail.identity' '
+	git config --replace-all sendemail.to "default@example.com" &&
+	git config --replace-all sendemail.isp.to "isp@example.com" &&
+	git config --replace-all sendemail.cloud.to "cloud@example.com"
+'
+
+test_expect_success $PREREQ 'sendemail.identity: reads the correct identity config' '
+	git -c sendemail.identity=cloud send-email \
+		--dry-run \
+		--from="nobody@example.com" \
+		$patches >stdout &&
+	grep "To: cloud@example.com" stdout
+'
+
+test_expect_success $PREREQ 'sendemail.identity: identity overrides sendemail.identity' '
+	git -c sendemail.identity=cloud send-email \
+		--identity=isp \
+		--dry-run \
+		--from="nobody@example.com" \
+		$patches >stdout &&
+	grep "To: isp@example.com" stdout
+'
+
+test_expect_success $PREREQ 'sendemail.identity: --no-identity clears previous identity' '
+	git -c sendemail.identity=cloud send-email \
+		--no-identity \
+		--dry-run \
+		--from="nobody@example.com" \
+		$patches >stdout &&
+	grep "To: default@example.com" stdout
+'
+
+test_expect_success $PREREQ 'sendemail.identity: bool identity variable existance overrides' '
+	git -c sendemail.identity=cloud \
+		-c sendemail.xmailer=true \
+		-c sendemail.cloud.xmailer=false \
+		send-email \
+		--dry-run \
+		--from="nobody@example.com" \
+		$patches >stdout &&
+	grep "To: cloud@example.com" stdout &&
+	! grep "X-Mailer" stdout
+'
+
+test_expect_success $PREREQ 'sendemail.identity: bool variable fallback' '
+	git -c sendemail.identity=cloud \
+		-c sendemail.xmailer=false \
+		send-email \
+		--dry-run \
+		--from="nobody@example.com" \
+		$patches >stdout &&
+	grep "To: cloud@example.com" stdout &&
+	! grep "X-Mailer" stdout
+'
+
 test_expect_success $PREREQ '--no-to overrides sendemail.to' '
 	git send-email \
 		--dry-run \
@@ -1785,6 +1840,15 @@ test_expect_success '--dump-aliases must be used alone' '
 	test_must_fail git send-email --dump-aliases --to=janice@example.com -1 refs/heads/accounting
 '
 
+test_expect_success 'aliases and sendemail.identity' '
+	test_must_fail git \
+		-c sendemail.identity=cloud \
+		-c sendemail.aliasesfile=default-aliases \
+		-c sendemail.cloud.aliasesfile=cloud-aliases \
+		send-email -1 2>stderr &&
+	test_i18ngrep "cloud-aliases" stderr
+'
+
 test_sendmail_aliases () {
 	msg="$1" && shift &&
 	expect="$@" &&
-- 
2.21.0.1020.gf2820cf01a


  parent reply index

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-09 19:27 [PATCH 1/1] send-email: fix transferencoding config option Heinrich Schuchardt
2019-04-09 21:58 ` Jonathan Nieder
2019-04-09 23:39   ` Heinrich Schuchardt
2019-04-10  3:48   ` Junio C Hamano
2019-04-10 20:40     ` Heinrich Schuchardt
2019-04-10 22:42       ` brian m. carlson
2019-05-08  8:18     ` Re* " Junio C Hamano
2019-05-08  8:20       ` [PATCH 2/2] send-email: honor transferencoding config option again Junio C Hamano
2019-05-08 10:13       ` Re* [PATCH 1/1] send-email: fix transferencoding config option Junio C Hamano
2019-05-08 10:56         ` [PATCH v2 0/2] send-email: set xfer encoding correctly Junio C Hamano
2019-05-09 11:48           ` [PATCH v3 0/3] send-email: fix cli->config parsing crazyness Ævar Arnfjörð Bjarmason
2019-05-10 13:50             ` Junio C Hamano
2019-05-09 11:48           ` [PATCH v3 1/3] send-email: move the read_config() function above getopts Ævar Arnfjörð Bjarmason
2019-05-09 11:48           ` [PATCH v3 2/3] send-email: rename the @bcclist variable for consistency Ævar Arnfjörð Bjarmason
2019-05-09 11:48           ` [PATCH v3 3/3] send-email: do defaults -> config -> getopt in that order Ævar Arnfjörð Bjarmason
2019-05-09 18:04             ` Eric Sunshine
2019-05-13  8:46               ` Junio C Hamano
2019-05-09 23:51             ` brian m. carlson
2019-05-13  8:50             ` Junio C Hamano
2019-05-13 21:13               ` Ævar Arnfjörð Bjarmason
2019-05-16 22:59             ` Stephen Boyd
2019-05-16 23:13               ` Junio C Hamano
2019-05-17  3:43                 ` Junio C Hamano
2019-05-17 19:55                   ` [PATCH 0/5] ab/send-email-transferencoding-fix-for-the-fix Ævar Arnfjörð Bjarmason
2019-05-17 19:55                   ` [PATCH 1/5] send-email: remove cargo-culted multi-patch pattern in tests Ævar Arnfjörð Bjarmason
2019-05-17 19:55                   ` [PATCH 2/5] send-email: fix broken transferEncoding tests Ævar Arnfjörð Bjarmason
2019-05-17 19:55                   ` [PATCH 3/5] send-email: document --no-[to|cc|bcc] Ævar Arnfjörð Bjarmason
2019-05-17 19:55                   ` Ævar Arnfjörð Bjarmason [this message]
2019-05-19  1:29                     ` [PATCH 4/5] send-email: fix regression in sendemail.identity parsing Junio C Hamano
2019-05-17 19:55                   ` [PATCH 5/5] send-email: remove support for deprecated sendemail.smtpssl Ævar Arnfjörð Bjarmason
2019-05-08 10:56         ` [PATCH v2 1/2] send-email: update the mechanism to set default configuration values Junio C Hamano
2019-05-08 10:56         ` [PATCH v2 2/2] send-email: honor transferencoding config option again Junio C Hamano
2019-05-08 21:24           ` Eric Sunshine
2019-05-09  6:47             ` Junio C Hamano
2019-05-08 23:12           ` brian m. carlson
2019-04-09 22:55 ` [PATCH 1/1] send-email: fix transferencoding config option brian m. carlson
2019-04-09 23:06   ` Heinrich Schuchardt

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: http://vger.kernel.org/majordomo-info.html

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190517195545.29729-5-avarab@gmail.com \
    --to=avarab@gmail.com \
    --cc=git@vger.kernel.org \
    --cc=gitster@pobox.com \
    --cc=jrnieder@gmail.com \
    --cc=pbonzini@redhat.com \
    --cc=peff@peff.net \
    --cc=sandals@crustytoothpaste.net \
    --cc=sunshine@sunshineco.com \
    --cc=swboyd@chromium.org \
    --cc=xypron.glpk@gmx.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

git@vger.kernel.org list mirror (unofficial, one of many)

Archives are clonable:
	git clone --mirror http://public-inbox.org/git
	git clone --mirror http://ou63pmih66umazou.onion/git
	git clone --mirror http://czquwvybam4bgbro.onion/git
	git clone --mirror http://hjrcffqmbrq6wope.onion/git

Newsgroups are available over NNTP:
	nntp://news.public-inbox.org/inbox.comp.version-control.git
	nntp://ou63pmih66umazou.onion/inbox.comp.version-control.git
	nntp://czquwvybam4bgbro.onion/inbox.comp.version-control.git
	nntp://hjrcffqmbrq6wope.onion/inbox.comp.version-control.git
	nntp://news.gmane.org/gmane.comp.version-control.git

 note: .onion URLs require Tor: https://www.torproject.org/

AGPL code for this site: git clone https://public-inbox.org/ public-inbox