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src: use proper errors as coming from StringBytes
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The previous errors were incorrect here, as the code
only failed in situations where strings exceeded size limits or
an OOM situation was encountered, not for invalid encodings
(which aren’t even detected explicitly).

Unfortunately, these situations are hard to test for.

PR-URL: #14579
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
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@addaleax
addaleax committed Aug 24, 2017
1 parent 7e54424 commit 784c6d4
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Showing 3 changed files with 17 additions and 71 deletions.
60 changes: 12 additions & 48 deletions src/node_file.cc
View file
Original file line number Diff line number Diff line change
Expand Up @@ -244,13 +244,7 @@ void After(uv_fs_t *req) {
req_wrap->encoding_,
&error);
if (link.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
argv[0] = UVException(env->isolate(),
UV_EINVAL,
req_wrap->syscall(),
"Invalid character encoding for filename",
req->path,
req_wrap->data());
argv[0] = error;
} else {
argv[1] = link.ToLocalChecked();
}
Expand All @@ -263,13 +257,7 @@ void After(uv_fs_t *req) {
req_wrap->encoding_,
&error);
if (link.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
argv[0] = UVException(env->isolate(),
UV_EINVAL,
req_wrap->syscall(),
"Invalid character encoding for link",
req->path,
req_wrap->data());
argv[0] = error;
} else {
argv[1] = link.ToLocalChecked();
}
Expand All @@ -281,13 +269,7 @@ void After(uv_fs_t *req) {
req_wrap->encoding_,
&error);
if (link.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
argv[0] = UVException(env->isolate(),
UV_EINVAL,
req_wrap->syscall(),
"Invalid character encoding for link",
req->path,
req_wrap->data());
argv[0] = error;
} else {
argv[1] = link.ToLocalChecked();
}
Expand Down Expand Up @@ -326,13 +308,7 @@ void After(uv_fs_t *req) {
req_wrap->encoding_,
&error);
if (filename.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
argv[0] = UVException(env->isolate(),
UV_EINVAL,
req_wrap->syscall(),
"Invalid character encoding for filename",
req->path,
req_wrap->data());
argv[0] = error;
break;
}
name_argv[name_idx++] = filename.ToLocalChecked();
Expand Down Expand Up @@ -711,11 +687,8 @@ static void ReadLink(const FunctionCallbackInfo<Value>& args) {
encoding,
&error);
if (rc.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
return env->ThrowUVException(UV_EINVAL,
"readlink",
"Invalid character encoding for link",
*path);
env->isolate()->ThrowException(error);
return;
}
args.GetReturnValue().Set(rc.ToLocalChecked());
}
Expand Down Expand Up @@ -886,11 +859,8 @@ static void RealPath(const FunctionCallbackInfo<Value>& args) {
encoding,
&error);
if (rc.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
return env->ThrowUVException(UV_EINVAL,
"realpath",
"Invalid character encoding for path",
*path);
env->isolate()->ThrowException(error);
return;
}
args.GetReturnValue().Set(rc.ToLocalChecked());
}
Expand Down Expand Up @@ -940,11 +910,8 @@ static void ReadDir(const FunctionCallbackInfo<Value>& args) {
encoding,
&error);
if (filename.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
return env->ThrowUVException(UV_EINVAL,
"readdir",
"Invalid character encoding for filename",
*path);
env->isolate()->ThrowException(error);
return;
}

name_v[name_idx++] = filename.ToLocalChecked();
Expand Down Expand Up @@ -1405,11 +1372,8 @@ static void Mkdtemp(const FunctionCallbackInfo<Value>& args) {
MaybeLocal<Value> rc =
StringBytes::Encode(env->isolate(), path, encoding, &error);
if (rc.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
return env->ThrowUVException(UV_EINVAL,
"mkdtemp",
"Invalid character encoding for filename",
*tmpl);
env->isolate()->ThrowException(error);
return;
}
args.GetReturnValue().Set(rc.ToLocalChecked());
}
Expand Down
26 changes: 5 additions & 21 deletions src/node_os.cc
View file
Original file line number Diff line number Diff line change
Expand Up @@ -376,27 +376,11 @@ static void GetUserInfo(const FunctionCallbackInfo<Value>& args) {
else
shell = StringBytes::Encode(env->isolate(), pwd.shell, encoding, &error);

uv_os_free_passwd(&pwd);

if (username.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
return env->ThrowUVException(UV_EINVAL,
"uv_os_get_passwd",
"Invalid character encoding for username");
}

if (homedir.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
return env->ThrowUVException(UV_EINVAL,
"uv_os_get_passwd",
"Invalid character encoding for homedir");
}

if (shell.IsEmpty()) {
// TODO(addaleax): Use `error` itself here.
return env->ThrowUVException(UV_EINVAL,
"uv_os_get_passwd",
"Invalid character encoding for shell");
if (username.IsEmpty() || homedir.IsEmpty() || shell.IsEmpty()) {
CHECK(!error.IsEmpty());
uv_os_free_passwd(&pwd);
env->isolate()->ThrowException(error);
return;
}

Local<Object> entry = Object::New(env->isolate());
Expand Down
2 changes: 0 additions & 2 deletions src/string_bytes.cc
View file
Original file line number Diff line number Diff line change
Expand Up @@ -686,7 +686,6 @@ MaybeLocal<Value> StringBytes::Encode(Isolate* isolate,
CHECK_NE(encoding, UCS2);
CHECK_BUFLEN_IN_RANGE(buflen);

*error = Local<Value>();
if (!buflen && encoding != BUFFER) {
return String::Empty(isolate);
}
Expand Down Expand Up @@ -772,7 +771,6 @@ MaybeLocal<Value> StringBytes::Encode(Isolate* isolate,
size_t buflen,
Local<Value>* error) {
CHECK_BUFLEN_IN_RANGE(buflen);
*error = Local<Value>();

// Node's "ucs2" encoding expects LE character data inside a
// Buffer, so we need to reorder on BE platforms. See
Expand Down

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