Git 2.19.5

This merges up the security fix from v2.17.5.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>

3 files changed, 275 insertions, 19 deletions

diff --git a/t/t0300-credentials.sh b/t/t0300-credentials.sh
index b9c0f1f279..6d44e7e5cc 100755
--- a/t/t0300-credentials.sh
+++ b/t/t0300-credentials.sh
@@ -22,6 +22,11 @@ test_expect_success 'setup helper scripts' '
 	exit 0
 	EOF
 
+	write_script git-credential-quit <<-\EOF &&
+	. ./dump
+	echo quit=1
+	EOF
+
 	write_script git-credential-verbatim <<-\EOF &&
 	user=$1; shift
 	pass=$1; shift
@@ -35,43 +40,71 @@ test_expect_success 'setup helper scripts' '
 
 test_expect_success 'credential_fill invokes helper' '
 	check fill "verbatim foo bar" <<-\EOF
+	protocol=http
+	host=example.com
 	--
+	protocol=http
+	host=example.com
 	username=foo
 	password=bar
 	--
 	verbatim: get
+	verbatim: protocol=http
+	verbatim: host=example.com
 	EOF
 '
 
 test_expect_success 'credential_fill invokes multiple helpers' '
 	check fill useless "verbatim foo bar" <<-\EOF
+	protocol=http
+	host=example.com
 	--
+	protocol=http
+	host=example.com
 	username=foo
 	password=bar
 	--
 	useless: get
+	useless: protocol=http
+	useless: host=example.com
 	verbatim: get
+	verbatim: protocol=http
+	verbatim: host=example.com
 	EOF
 '
 
 test_expect_success 'credential_fill stops when we get a full response' '
 	check fill "verbatim one two" "verbatim three four" <<-\EOF
+	protocol=http
+	host=example.com
 	--
+	protocol=http
+	host=example.com
 	username=one
 	password=two
 	--
 	verbatim: get
+	verbatim: protocol=http
+	verbatim: host=example.com
 	EOF
 '
 
 test_expect_success 'credential_fill continues through partial response' '
 	check fill "verbatim one \"\"" "verbatim two three" <<-\EOF
+	protocol=http
+	host=example.com
 	--
+	protocol=http
+	host=example.com
 	username=two
 	password=three
 	--
 	verbatim: get
+	verbatim: protocol=http
+	verbatim: host=example.com
 	verbatim: get
+	verbatim: protocol=http
+	verbatim: host=example.com
 	verbatim: username=one
 	EOF
 '
@@ -97,14 +130,20 @@ test_expect_success 'credential_fill passes along metadata' '
 
 test_expect_success 'credential_approve calls all helpers' '
 	check approve useless "verbatim one two" <<-\EOF
+	protocol=http
+	host=example.com
 	username=foo
 	password=bar
 	--
 	--
 	useless: store
+	useless: protocol=http
+	useless: host=example.com
 	useless: username=foo
 	useless: password=bar
 	verbatim: store
+	verbatim: protocol=http
+	verbatim: host=example.com
 	verbatim: username=foo
 	verbatim: password=bar
 	EOF
@@ -112,6 +151,8 @@ test_expect_success 'credential_approve calls all helpers' '
 
 test_expect_success 'do not bother storing password-less credential' '
 	check approve useless <<-\EOF
+	protocol=http
+	host=example.com
 	username=foo
 	--
 	--
@@ -121,14 +162,20 @@ test_expect_success 'do not bother storing password-less credential' '
 
 test_expect_success 'credential_reject calls all helpers' '
 	check reject useless "verbatim one two" <<-\EOF
+	protocol=http
+	host=example.com
 	username=foo
 	password=bar
 	--
 	--
 	useless: erase
+	useless: protocol=http
+	useless: host=example.com
 	useless: username=foo
 	useless: password=bar
 	verbatim: erase
+	verbatim: protocol=http
+	verbatim: host=example.com
 	verbatim: username=foo
 	verbatim: password=bar
 	EOF
@@ -136,33 +183,49 @@ test_expect_success 'credential_reject calls all helpers' '
 
 test_expect_success 'usernames can be preserved' '
 	check fill "verbatim \"\" three" <<-\EOF
+	protocol=http
+	host=example.com
 	username=one
 	--
+	protocol=http
+	host=example.com
 	username=one
 	password=three
 	--
 	verbatim: get
+	verbatim: protocol=http
+	verbatim: host=example.com
 	verbatim: username=one
 	EOF
 '
 
 test_expect_success 'usernames can be overridden' '
 	check fill "verbatim two three" <<-\EOF
+	protocol=http
+	host=example.com
 	username=one
 	--
+	protocol=http
+	host=example.com
 	username=two
 	password=three
 	--
 	verbatim: get
+	verbatim: protocol=http
+	verbatim: host=example.com
 	verbatim: username=one
 	EOF
 '
 
 test_expect_success 'do not bother completing already-full credential' '
 	check fill "verbatim three four" <<-\EOF
+	protocol=http
+	host=example.com
 	username=one
 	password=two
 	--
+	protocol=http
+	host=example.com
 	username=one
 	password=two
 	--
@@ -174,23 +237,31 @@ test_expect_success 'do not bother completing already-full credential' '
 # askpass helper is run, we know the internal getpass is working.
 test_expect_success 'empty helper list falls back to internal getpass' '
 	check fill <<-\EOF
+	protocol=http
+	host=example.com
 	--
+	protocol=http
+	host=example.com
 	username=askpass-username
 	password=askpass-password
 	--
-	askpass: Username:
-	askpass: Password:
+	askpass: Username for '\''http://example.com'\'':
+	askpass: Password for '\''http://askpass-username@example.com'\'':
 	EOF
 '
 
 test_expect_success 'internal getpass does not ask for known username' '
 	check fill <<-\EOF
+	protocol=http
+	host=example.com
 	username=foo
 	--
+	protocol=http
+	host=example.com
 	username=foo
 	password=askpass-password
 	--
-	askpass: Password:
+	askpass: Password for '\''http://foo@example.com'\'':
 	EOF
 '
 
@@ -202,7 +273,11 @@ HELPER="!f() {
 test_expect_success 'respect configured credentials' '
 	test_config credential.helper "$HELPER" &&
 	check fill <<-\EOF
+	protocol=http
+	host=example.com
 	--
+	protocol=http
+	host=example.com
 	username=foo
 	password=bar
 	--
@@ -291,35 +366,85 @@ test_expect_success 'http paths can be part of context' '
 
 test_expect_success 'helpers can abort the process' '
 	test_must_fail git \
-		-c credential.helper="!f() { echo quit=1; }; f" \
+		-c credential.helper=quit \
 		-c credential.helper="verbatim foo bar" \
-		credential fill >stdout &&
-	test_must_be_empty stdout
+		credential fill >stdout 2>stderr <<-\EOF &&
+	protocol=http
+	host=example.com
+	EOF
+	test_must_be_empty stdout &&
+	cat >expect <<-\EOF &&
+	quit: get
+	quit: protocol=http
+	quit: host=example.com
+	fatal: credential helper '\''quit'\'' told us to quit
+	EOF
+	test_i18ncmp expect stderr
 '
 
 test_expect_success 'empty helper spec resets helper list' '
 	test_config credential.helper "verbatim file file" &&
 	check fill "" "verbatim cmdline cmdline" <<-\EOF
+	protocol=http
+	host=example.com
 	--
+	protocol=http
+	host=example.com
 	username=cmdline
 	password=cmdline
 	--
 	verbatim: get
+	verbatim: protocol=http
+	verbatim: host=example.com
 	EOF
 '
 
-test_expect_success 'url parser ignores embedded newlines' '
-	check fill <<-EOF
+test_expect_success 'url parser rejects embedded newlines' '
+	test_must_fail git credential fill 2>stderr <<-\EOF &&
 	url=https://one.example.com?%0ahost=two.example.com/
+	EOF
+	cat >expect <<-\EOF &&
+	warning: url contains a newline in its host component: https://one.example.com?%0ahost=two.example.com/
+	fatal: credential url cannot be parsed: https://one.example.com?%0ahost=two.example.com/
+	EOF
+	test_i18ncmp expect stderr
+'
+
+test_expect_success 'host-less URLs are parsed as empty host' '
+	check fill "verbatim foo bar" <<-\EOF
+	url=cert:///path/to/cert.pem
 	--
-	username=askpass-username
-	password=askpass-password
+	protocol=cert
+	host=
+	path=path/to/cert.pem
+	username=foo
+	password=bar
 	--
-	warning: url contains a newline in its host component: https://one.example.com?%0ahost=two.example.com/
-	warning: skipping credential lookup for url: https://one.example.com?%0ahost=two.example.com/
-	askpass: Username:
-	askpass: Password:
+	verbatim: get
+	verbatim: protocol=cert
+	verbatim: host=
+	verbatim: path=path/to/cert.pem
+	EOF
+'
+
+test_expect_success 'credential system refuses to work with missing host' '
+	test_must_fail git credential fill 2>stderr <<-\EOF &&
+	protocol=http
+	EOF
+	cat >expect <<-\EOF &&
+	fatal: refusing to work with credential missing host field
+	EOF
+	test_i18ncmp expect stderr
+'
+
+test_expect_success 'credential system refuses to work with missing protocol' '
+	test_must_fail git credential fill 2>stderr <<-\EOF &&
+	host=example.com
+	EOF
+	cat >expect <<-\EOF &&
+	fatal: refusing to work with credential missing protocol field
 	EOF
+	test_i18ncmp expect stderr
 '
 
 test_done
diff --git a/t/t5550-http-fetch-dumb.sh b/t/t5550-http-fetch-dumb.sh
index 6d7d88ccc9..bf9ca5a8ec 100755
--- a/t/t5550-http-fetch-dumb.sh
+++ b/t/t5550-http-fetch-dumb.sh
@@ -321,11 +321,17 @@ test_expect_success 'git client does not send an empty Accept-Language' '
 '
 
 test_expect_success 'remote-http complains cleanly about malformed urls' '
-	# do not actually issue "list" or other commands, as we do not
-	# want to rely on what curl would actually do with such a broken
-	# URL. This is just about making sure we do not segfault during
-	# initialization.
-	test_must_fail git remote-http http::/example.com/repo.git
+	test_must_fail git remote-http http::/example.com/repo.git 2>stderr &&
+	test_i18ngrep "url has no scheme" stderr
+'
+
+# NEEDSWORK: Writing commands to git-remote-curl can race against the latter
+# erroring out, producing SIGPIPE. Remove "ok=sigpipe" once transport-helper has
+# learned to handle early remote helper failures more cleanly.
+test_expect_success 'remote-http complains cleanly about empty scheme' '
+	test_must_fail ok=sigpipe git ls-remote \
+		http::${HTTPD_URL#http}/dumb/repo.git 2>stderr &&
+	test_i18ngrep "url has no scheme" stderr
 '
 
 test_expect_success 'redirects can be forbidden/allowed' '
diff --git a/t/t7416-submodule-dash-url.sh b/t/t7416-submodule-dash-url.sh
index 41431b1ac3..eec96e0ba9 100755
--- a/t/t7416-submodule-dash-url.sh
+++ b/t/t7416-submodule-dash-url.sh
@@ -60,6 +60,116 @@ test_expect_success 'trailing backslash is handled correctly' '
 	test_i18ngrep ! "unknown option" err
 '
 
+test_expect_success 'fsck rejects missing URL scheme' '
+	git checkout --orphan missing-scheme &&
+	cat >.gitmodules <<-\EOF &&
+	[submodule "foo"]
+		url = http::one.example.com/foo.git
+	EOF
+	git add .gitmodules &&
+	test_tick &&
+	git commit -m "gitmodules with missing URL scheme" &&
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	test_must_fail git push dst HEAD 2>err &&
+	grep gitmodulesUrl err
+'
+
+test_expect_success 'fsck rejects relative URL resolving to missing scheme' '
+	git checkout --orphan relative-missing-scheme &&
+	cat >.gitmodules <<-\EOF &&
+	[submodule "foo"]
+		url = "..\\../.\\../:one.example.com/foo.git"
+	EOF
+	git add .gitmodules &&
+	test_tick &&
+	git commit -m "gitmodules with relative URL that strips off scheme" &&
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	test_must_fail git push dst HEAD 2>err &&
+	grep gitmodulesUrl err
+'
+
+test_expect_success 'fsck rejects empty URL scheme' '
+	git checkout --orphan empty-scheme &&
+	cat >.gitmodules <<-\EOF &&
+	[submodule "foo"]
+		url = http::://one.example.com/foo.git
+	EOF
+	git add .gitmodules &&
+	test_tick &&
+	git commit -m "gitmodules with empty URL scheme" &&
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	test_must_fail git push dst HEAD 2>err &&
+	grep gitmodulesUrl err
+'
+
+test_expect_success 'fsck rejects relative URL resolving to empty scheme' '
+	git checkout --orphan relative-empty-scheme &&
+	cat >.gitmodules <<-\EOF &&
+	[submodule "foo"]
+		url = ../../../:://one.example.com/foo.git
+	EOF
+	git add .gitmodules &&
+	test_tick &&
+	git commit -m "relative gitmodules URL resolving to empty scheme" &&
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	test_must_fail git push dst HEAD 2>err &&
+	grep gitmodulesUrl err
+'
+
+test_expect_success 'fsck rejects empty hostname' '
+	git checkout --orphan empty-host &&
+	cat >.gitmodules <<-\EOF &&
+	[submodule "foo"]
+		url = http:///one.example.com/foo.git
+	EOF
+	git add .gitmodules &&
+	test_tick &&
+	git commit -m "gitmodules with extra slashes" &&
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	test_must_fail git push dst HEAD 2>err &&
+	grep gitmodulesUrl err
+'
+
+test_expect_success 'fsck rejects relative url that produced empty hostname' '
+	git checkout --orphan messy-relative &&
+	cat >.gitmodules <<-\EOF &&
+	[submodule "foo"]
+		url = ../../..//one.example.com/foo.git
+	EOF
+	git add .gitmodules &&
+	test_tick &&
+	git commit -m "gitmodules abusing relative_path" &&
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	test_must_fail git push dst HEAD 2>err &&
+	grep gitmodulesUrl err
+'
+
+test_expect_success 'fsck permits embedded newline with unrecognized scheme' '
+	git checkout --orphan newscheme &&
+	cat >.gitmodules <<-\EOF &&
+	[submodule "foo"]
+		url = "data://acjbkd%0akajfdickajkd"
+	EOF
+	git add .gitmodules &&
+	git commit -m "gitmodules with unrecognized scheme" &&
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	git push dst HEAD
+'
+
 test_expect_success 'fsck rejects embedded newline in url' '
 	# create an orphan branch to avoid existing .gitmodules objects
 	git checkout --orphan newline &&
@@ -76,4 +186,19 @@ test_expect_success 'fsck rejects embedded newline in url' '
 	grep gitmodulesUrl err
 '
 
+test_expect_success 'fsck rejects embedded newline in relative url' '
+	git checkout --orphan relative-newline &&
+	cat >.gitmodules <<-\EOF &&
+	[submodule "foo"]
+		url = "./%0ahost=two.example.com/foo.git"
+	EOF
+	git add .gitmodules &&
+	git commit -m "relative url with newline" &&
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	test_must_fail git push dst HEAD 2>err &&
+	grep gitmodulesUrl err
+'
+
 test_done