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fix!: encoding of empty Buffers (protobufjs#1514)
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closes protobufjs#1500
fixes protobufjs#885

Co-authored-by: Benjamin E. Coe <bencoe@google.com>
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@vicb @bcoe
vicb and bcoe authored Dec 7, 2020
1 parent 52d4f00 commit b4cae07
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Showing 4 changed files with 25 additions and 9 deletions.
2 changes: 1 addition & 1 deletion src/converter.js
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Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,7 @@ function genValuePartial_fromObject(gen, field, fieldIndex, prop) {
case "bytes": gen
("if(typeof d%s===\"string\")", prop)
("util.base64.decode(d%s,m%s=util.newBuffer(util.base64.length(d%s)),0)", prop, prop, prop)
("else if(d%s.length)", prop)
("else if(d%s.length >= 0)", prop)
("m%s=d%s", prop, prop);
break;
case "string": gen
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20 changes: 18 additions & 2 deletions tests/api_converters.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ tape.test("converters", function(test) {

test.test(test.name + " - Message#toObject", function(test) {

test.plan(5);
test.plan(6);

test.test(test.name + " - called with defaults = true", function(test) {
var obj = Message.toObject(Message.create(), { defaults: true });
Expand All @@ -23,7 +23,7 @@ tape.test("converters", function(test) {
test.same(obj.uint64Val, { low: 0, high: 0, unsigned: true }, "should set uint64Val");
test.same(obj.uint64Repeated, [], "should set uint64Repeated");

test.same(obj.bytesVal, [], "should set bytesVal");
test.same(obj.bytesVal, protobuf.util.newBuffer(0), "should set bytesVal");
test.same(obj.bytesRepeated, [], "should set bytesRepeated");

test.equal(obj.enumVal, 1, "should set enumVal to the first defined value");
Expand Down Expand Up @@ -131,6 +131,22 @@ tape.test("converters", function(test) {
test.end();
});

test.test(test.name + " - Message.toObject with empty buffers", function(test) {
var msg = Message.create({
bytesVal: protobuf.util.newBuffer(0),
});

test.equal(Message.toObject(msg, { bytes: String }).bytesVal, "", "bytes to base64 strings");

if (protobuf.util.isNode) {
const bytesVal = Message.toObject(msg, { bytes: Buffer }).bytesVal;
test.ok(Buffer.isBuffer(bytesVal), "bytes to buffers");
test.equal(bytesVal.length, 0, "empty buffer");
}

test.end();
});

});

test.test(test.name + " - Message.fromObject", function(test) {
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4 changes: 2 additions & 2 deletions tests/data/convert.js
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Original file line number Diff line number Diff line change
Expand Up @@ -412,7 +412,7 @@ $root.Message = (function() {
if (object.bytesVal != null)
if (typeof object.bytesVal === "string")
$util.base64.decode(object.bytesVal, message.bytesVal = $util.newBuffer($util.base64.length(object.bytesVal)), 0);
else if (object.bytesVal.length)
else if (object.bytesVal.length >= 0)
message.bytesVal = object.bytesVal;
if (object.bytesRepeated) {
if (!Array.isArray(object.bytesRepeated))
Expand All @@ -421,7 +421,7 @@ $root.Message = (function() {
for (var i = 0; i < object.bytesRepeated.length; ++i)
if (typeof object.bytesRepeated[i] === "string")
$util.base64.decode(object.bytesRepeated[i], message.bytesRepeated[i] = $util.newBuffer($util.base64.length(object.bytesRepeated[i])), 0);
else if (object.bytesRepeated[i].length)
else if (object.bytesRepeated[i].length >= 0)
message.bytesRepeated[i] = object.bytesRepeated[i];
}
switch (object.enumVal) {
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8 changes: 4 additions & 4 deletions tests/data/test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3522,7 +3522,7 @@ $root.jspb = (function() {
if (object.bytesField != null)
if (typeof object.bytesField === "string")
$util.base64.decode(object.bytesField, message.bytesField = $util.newBuffer($util.base64.length(object.bytesField)), 0);
else if (object.bytesField.length)
else if (object.bytesField.length >= 0)
message.bytesField = object.bytesField;
return message;
};
Expand Down Expand Up @@ -4261,7 +4261,7 @@ $root.jspb = (function() {
if (object.bytesField != null)
if (typeof object.bytesField === "string")
$util.base64.decode(object.bytesField, message.bytesField = $util.newBuffer($util.base64.length(object.bytesField)), 0);
else if (object.bytesField.length)
else if (object.bytesField.length >= 0)
message.bytesField = object.bytesField;
if (object.unused != null)
message.unused = String(object.unused);
Expand Down Expand Up @@ -6701,7 +6701,7 @@ $root.jspb = (function() {
if (object.data != null)
if (typeof object.data === "string")
$util.base64.decode(object.data, message.data = $util.newBuffer($util.base64.length(object.data)), 0);
else if (object.data.length)
else if (object.data.length >= 0)
message.data = object.data;
return message;
};
Expand Down Expand Up @@ -14741,7 +14741,7 @@ $root.google = (function() {
if (object.stringValue != null)
if (typeof object.stringValue === "string")
$util.base64.decode(object.stringValue, message.stringValue = $util.newBuffer($util.base64.length(object.stringValue)), 0);
else if (object.stringValue.length)
else if (object.stringValue.length >= 0)
message.stringValue = object.stringValue;
if (object.aggregateValue != null)
message.aggregateValue = String(object.aggregateValue);
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