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VariantParser: Fix crash on malformed vectors

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Each time `r_err_str` is set, we should return a parse error.

Removed redundant `return OK;` which were already handled after the big
`if`/`else if`/`else` for `TK_IDENTIFIER`.

Part of #17372.

(cherry picked from commit e7ebda975a)
This commit is contained in:
Rémi Verschelde 2020-06-08 11:36:41 +02:00
parent 3edae035d5
commit 1a1c30702d
1 changed files with 12 additions and 52 deletions
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64
core/variant_parser.cpp
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@ -485,13 +485,6 @@ Error VariantParser::_parse_construct(Stream *p_stream, Vector<T> &r_construct,
}
Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream, int &line, String &r_err_str, ResourceParser *p_res_parser) {
/* {
Error err = get_token(p_stream,token,line,r_err_str);
if (err)
return err;
}*/
if (token.type == TK_CURLY_BRACKET_OPEN) {
Dictionary d;
@ -508,7 +501,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
return err;
value = a;
return OK;
} else if (token.type == TK_IDENTIFIER) {
String id = token.value;
@ -531,10 +523,10 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 2) {
r_err_str = "Expected 2 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Vector2(args[0], args[1]);
return OK;
} else if (id == "Rect2") {
Vector<float> args;
@ -544,10 +536,10 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Rect2(args[0], args[1], args[2], args[3]);
return OK;
} else if (id == "Vector3") {
Vector<float> args;
@ -557,12 +549,11 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 3) {
r_err_str = "Expected 3 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Vector3(args[0], args[1], args[2]);
return OK;
} else if (id == "Transform2D" || id == "Matrix32") { //compatibility
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err)
@ -570,13 +561,14 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 6) {
r_err_str = "Expected 6 arguments for constructor";
return ERR_PARSE_ERROR;
}
Transform2D m;
m[0] = Vector2(args[0], args[1]);
m[1] = Vector2(args[2], args[3]);
m[2] = Vector2(args[4], args[5]);
value = m;
return OK;
} else if (id == "Plane") {
Vector<float> args;
@ -586,10 +578,10 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Plane(args[0], args[1], args[2], args[3]);
return OK;
} else if (id == "Quat") {
Vector<float> args;
@ -599,11 +591,10 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Quat(args[0], args[1], args[2], args[3]);
return OK;
} else if (id == "AABB" || id == "Rect3") {
Vector<float> args;
@ -613,13 +604,11 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 6) {
r_err_str = "Expected 6 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = AABB(Vector3(args[0], args[1], args[2]), Vector3(args[3], args[4], args[5]));
return OK;
} else if (id == "Basis" || id == "Matrix3") { //compatibility
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err)
@ -627,10 +616,10 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 9) {
r_err_str = "Expected 9 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Basis(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8]);
return OK;
} else if (id == "Transform") {
Vector<float> args;
@ -640,11 +629,10 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 12) {
r_err_str = "Expected 12 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Transform(Basis(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8]), Vector3(args[9], args[10], args[11]));
return OK;
} else if (id == "Color") {
Vector<float> args;
@ -654,11 +642,10 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Color(args[0], args[1], args[2], args[3]);
return OK;
} else if (id == "NodePath") {
get_token(p_stream, token, line, r_err_str);
@ -680,7 +667,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
r_err_str = "Expected ')'";
return ERR_PARSE_ERROR;
}
} else if (id == "RID") {
get_token(p_stream, token, line, r_err_str);
@ -702,8 +688,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
r_err_str = "Expected ')'";
return ERR_PARSE_ERROR;
}
return OK;
} else if (id == "Object") {
get_token(p_stream, token, line, r_err_str);
@ -806,7 +790,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
at_key = true;
}
}
} else if (id == "Resource" || id == "SubResource" || id == "ExtResource") {
get_token(p_stream, token, line, r_err_str);
@ -823,8 +806,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
return err;
value = res;
return OK;
} else if (p_res_parser && id == "ExtResource" && p_res_parser->ext_func) {
RES res;
@ -833,8 +814,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
return err;
value = res;
return OK;
} else if (p_res_parser && id == "SubResource" && p_res_parser->sub_func) {
RES res;
@ -843,8 +822,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
return err;
value = res;
return OK;
} else {
get_token(p_stream, token, line, r_err_str);
@ -863,8 +840,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
}
value = res;
return OK;
} else {
r_err_str = "Expected string as argument for Resource().";
return ERR_PARSE_ERROR;
@ -1059,8 +1034,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
}
value = ie;
return OK;
#endif
} else if (id == "PoolByteArray" || id == "ByteArray") {
@ -1081,8 +1054,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
value = arr;
return OK;
} else if (id == "PoolIntArray" || id == "IntArray") {
Vector<int> args;
@ -1102,8 +1073,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
value = arr;
return OK;
} else if (id == "PoolRealArray" || id == "FloatArray") {
Vector<float> args;
@ -1123,7 +1092,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
value = arr;
return OK;
} else if (id == "PoolStringArray" || id == "StringArray") {
get_token(p_stream, token, line, r_err_str);
@ -1173,8 +1141,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
value = arr;
return OK;
} else if (id == "PoolVector2Array" || id == "Vector2Array") {
Vector<float> args;
@ -1194,8 +1160,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
value = arr;
return OK;
} else if (id == "PoolVector3Array" || id == "Vector3Array") {
Vector<float> args;
@ -1215,8 +1179,6 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
value = arr;
return OK;
} else if (id == "PoolColorArray" || id == "ColorArray") {
Vector<float> args;
@ -1235,15 +1197,13 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
}
value = arr;
return OK;
} else {
r_err_str = "Unexpected identifier: '" + id + "'.";
return ERR_PARSE_ERROR;
}
// All above branches end up here unless they had an early return.
return OK;
} else if (token.type == TK_NUMBER) {
value = token.value;