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src: avoid dereference without existence check #14591

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2 changes: 1 addition & 1 deletion src/node_url.cc
Original file line number Diff line number Diff line change
Expand Up @@ -1283,7 +1283,7 @@ void URL::Parse(const char* input,
}
break;
case kNoScheme:
cannot_be_base = base->flags & URL_FLAGS_CANNOT_BE_BASE;
cannot_be_base = has_base && (base->flags & URL_FLAGS_CANNOT_BE_BASE);
if (!has_base || (cannot_be_base && ch != '#')) {
url->flags |= URL_FLAGS_FAILED;
return;
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14 changes: 13 additions & 1 deletion test/cctest/test_url.cc
Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
#include "gtest/gtest.h"

using node::url::URL;
using node::url::URL_FLAGS_FAILED;

class URLTest : public ::testing::Test {
protected:
Expand All @@ -20,6 +21,7 @@ class URLTest : public ::testing::Test {
TEST_F(URLTest, Simple) {
URL simple("https://example.org:81/a/b/c?query#fragment");

EXPECT_FALSE(simple.flags() & URL_FLAGS_FAILED);
EXPECT_EQ(simple.protocol(), "https:");
EXPECT_EQ(simple.host(), "example.org");
EXPECT_EQ(simple.port(), 81);
Expand All @@ -32,6 +34,7 @@ TEST_F(URLTest, Simple2) {
const char* input = "https://example.org:81/a/b/c?query#fragment";
URL simple(input, strlen(input));

EXPECT_FALSE(simple.flags() & URL_FLAGS_FAILED);
EXPECT_EQ(simple.protocol(), "https:");
EXPECT_EQ(simple.host(), "example.org");
EXPECT_EQ(simple.port(), 81);
Expand All @@ -40,10 +43,17 @@ TEST_F(URLTest, Simple2) {
EXPECT_EQ(simple.fragment(), "fragment");
}

TEST_F(URLTest, NoBase1) {
URL error("123noscheme");
EXPECT_TRUE(error.flags() & URL_FLAGS_FAILED);
}

TEST_F(URLTest, Base1) {
URL base("http://example.org/foo/bar");
URL simple("../baz", &base);
ASSERT_FALSE(base.flags() & URL_FLAGS_FAILED);

URL simple("../baz", &base);
EXPECT_FALSE(simple.flags() & URL_FLAGS_FAILED);
EXPECT_EQ(simple.protocol(), "http:");
EXPECT_EQ(simple.host(), "example.org");
EXPECT_EQ(simple.path(), "/baz");
Expand All @@ -52,6 +62,7 @@ TEST_F(URLTest, Base1) {
TEST_F(URLTest, Base2) {
URL simple("../baz", "http://example.org/foo/bar");

EXPECT_FALSE(simple.flags() & URL_FLAGS_FAILED);
EXPECT_EQ(simple.protocol(), "http:");
EXPECT_EQ(simple.host(), "example.org");
EXPECT_EQ(simple.path(), "/baz");
Expand All @@ -63,6 +74,7 @@ TEST_F(URLTest, Base3) {

URL simple(input, strlen(input), base, strlen(base));

EXPECT_FALSE(simple.flags() & URL_FLAGS_FAILED);
EXPECT_EQ(simple.protocol(), "http:");
EXPECT_EQ(simple.host(), "example.org");
EXPECT_EQ(simple.path(), "/baz");
Expand Down