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Girish Kumar46d7c3a2020-05-18 12:06:33 +00001/*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20package thrift
21
22import (
khenaidoo26721882021-08-11 17:42:52 -040023 "context"
Girish Kumar46d7c3a2020-05-18 12:06:33 +000024 "errors"
khenaidoo26721882021-08-11 17:42:52 -040025 "fmt"
Girish Kumar46d7c3a2020-05-18 12:06:33 +000026)
27
28const (
29 VERSION_MASK = 0xffff0000
30 VERSION_1 = 0x80010000
31)
32
33type TProtocol interface {
khenaidoo26721882021-08-11 17:42:52 -040034 WriteMessageBegin(ctx context.Context, name string, typeId TMessageType, seqid int32) error
35 WriteMessageEnd(ctx context.Context) error
36 WriteStructBegin(ctx context.Context, name string) error
37 WriteStructEnd(ctx context.Context) error
38 WriteFieldBegin(ctx context.Context, name string, typeId TType, id int16) error
39 WriteFieldEnd(ctx context.Context) error
40 WriteFieldStop(ctx context.Context) error
41 WriteMapBegin(ctx context.Context, keyType TType, valueType TType, size int) error
42 WriteMapEnd(ctx context.Context) error
43 WriteListBegin(ctx context.Context, elemType TType, size int) error
44 WriteListEnd(ctx context.Context) error
45 WriteSetBegin(ctx context.Context, elemType TType, size int) error
46 WriteSetEnd(ctx context.Context) error
47 WriteBool(ctx context.Context, value bool) error
48 WriteByte(ctx context.Context, value int8) error
49 WriteI16(ctx context.Context, value int16) error
50 WriteI32(ctx context.Context, value int32) error
51 WriteI64(ctx context.Context, value int64) error
52 WriteDouble(ctx context.Context, value float64) error
53 WriteString(ctx context.Context, value string) error
54 WriteBinary(ctx context.Context, value []byte) error
Girish Kumar46d7c3a2020-05-18 12:06:33 +000055
khenaidoo26721882021-08-11 17:42:52 -040056 ReadMessageBegin(ctx context.Context) (name string, typeId TMessageType, seqid int32, err error)
57 ReadMessageEnd(ctx context.Context) error
58 ReadStructBegin(ctx context.Context) (name string, err error)
59 ReadStructEnd(ctx context.Context) error
60 ReadFieldBegin(ctx context.Context) (name string, typeId TType, id int16, err error)
61 ReadFieldEnd(ctx context.Context) error
62 ReadMapBegin(ctx context.Context) (keyType TType, valueType TType, size int, err error)
63 ReadMapEnd(ctx context.Context) error
64 ReadListBegin(ctx context.Context) (elemType TType, size int, err error)
65 ReadListEnd(ctx context.Context) error
66 ReadSetBegin(ctx context.Context) (elemType TType, size int, err error)
67 ReadSetEnd(ctx context.Context) error
68 ReadBool(ctx context.Context) (value bool, err error)
69 ReadByte(ctx context.Context) (value int8, err error)
70 ReadI16(ctx context.Context) (value int16, err error)
71 ReadI32(ctx context.Context) (value int32, err error)
72 ReadI64(ctx context.Context) (value int64, err error)
73 ReadDouble(ctx context.Context) (value float64, err error)
74 ReadString(ctx context.Context) (value string, err error)
75 ReadBinary(ctx context.Context) (value []byte, err error)
Girish Kumar46d7c3a2020-05-18 12:06:33 +000076
khenaidoo26721882021-08-11 17:42:52 -040077 Skip(ctx context.Context, fieldType TType) (err error)
78 Flush(ctx context.Context) (err error)
Girish Kumar46d7c3a2020-05-18 12:06:33 +000079
80 Transport() TTransport
81}
82
83// The maximum recursive depth the skip() function will traverse
84const DEFAULT_RECURSION_DEPTH = 64
85
86// Skips over the next data element from the provided input TProtocol object.
khenaidoo26721882021-08-11 17:42:52 -040087func SkipDefaultDepth(ctx context.Context, prot TProtocol, typeId TType) (err error) {
88 return Skip(ctx, prot, typeId, DEFAULT_RECURSION_DEPTH)
Girish Kumar46d7c3a2020-05-18 12:06:33 +000089}
90
91// Skips over the next data element from the provided input TProtocol object.
khenaidoo26721882021-08-11 17:42:52 -040092func Skip(ctx context.Context, self TProtocol, fieldType TType, maxDepth int) (err error) {
93
94 if maxDepth <= 0 {
95 return NewTProtocolExceptionWithType(DEPTH_LIMIT, errors.New("Depth limit exceeded"))
Girish Kumar46d7c3a2020-05-18 12:06:33 +000096 }
97
98 switch fieldType {
Girish Kumar46d7c3a2020-05-18 12:06:33 +000099 case BOOL:
khenaidoo26721882021-08-11 17:42:52 -0400100 _, err = self.ReadBool(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000101 return
102 case BYTE:
khenaidoo26721882021-08-11 17:42:52 -0400103 _, err = self.ReadByte(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000104 return
105 case I16:
khenaidoo26721882021-08-11 17:42:52 -0400106 _, err = self.ReadI16(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000107 return
108 case I32:
khenaidoo26721882021-08-11 17:42:52 -0400109 _, err = self.ReadI32(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000110 return
111 case I64:
khenaidoo26721882021-08-11 17:42:52 -0400112 _, err = self.ReadI64(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000113 return
114 case DOUBLE:
khenaidoo26721882021-08-11 17:42:52 -0400115 _, err = self.ReadDouble(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000116 return
117 case STRING:
khenaidoo26721882021-08-11 17:42:52 -0400118 _, err = self.ReadString(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000119 return
120 case STRUCT:
khenaidoo26721882021-08-11 17:42:52 -0400121 if _, err = self.ReadStructBegin(ctx); err != nil {
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000122 return err
123 }
124 for {
khenaidoo26721882021-08-11 17:42:52 -0400125 _, typeId, _, _ := self.ReadFieldBegin(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000126 if typeId == STOP {
127 break
128 }
khenaidoo26721882021-08-11 17:42:52 -0400129 err := Skip(ctx, self, typeId, maxDepth-1)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000130 if err != nil {
131 return err
132 }
khenaidoo26721882021-08-11 17:42:52 -0400133 self.ReadFieldEnd(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000134 }
khenaidoo26721882021-08-11 17:42:52 -0400135 return self.ReadStructEnd(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000136 case MAP:
khenaidoo26721882021-08-11 17:42:52 -0400137 keyType, valueType, size, err := self.ReadMapBegin(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000138 if err != nil {
139 return err
140 }
141 for i := 0; i < size; i++ {
khenaidoo26721882021-08-11 17:42:52 -0400142 err := Skip(ctx, self, keyType, maxDepth-1)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000143 if err != nil {
144 return err
145 }
khenaidoo26721882021-08-11 17:42:52 -0400146 self.Skip(ctx, valueType)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000147 }
khenaidoo26721882021-08-11 17:42:52 -0400148 return self.ReadMapEnd(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000149 case SET:
khenaidoo26721882021-08-11 17:42:52 -0400150 elemType, size, err := self.ReadSetBegin(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000151 if err != nil {
152 return err
153 }
154 for i := 0; i < size; i++ {
khenaidoo26721882021-08-11 17:42:52 -0400155 err := Skip(ctx, self, elemType, maxDepth-1)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000156 if err != nil {
157 return err
158 }
159 }
khenaidoo26721882021-08-11 17:42:52 -0400160 return self.ReadSetEnd(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000161 case LIST:
khenaidoo26721882021-08-11 17:42:52 -0400162 elemType, size, err := self.ReadListBegin(ctx)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000163 if err != nil {
164 return err
165 }
166 for i := 0; i < size; i++ {
khenaidoo26721882021-08-11 17:42:52 -0400167 err := Skip(ctx, self, elemType, maxDepth-1)
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000168 if err != nil {
169 return err
170 }
171 }
khenaidoo26721882021-08-11 17:42:52 -0400172 return self.ReadListEnd(ctx)
173 default:
174 return NewTProtocolExceptionWithType(INVALID_DATA, errors.New(fmt.Sprintf("Unknown data type %d", fieldType)))
Girish Kumar46d7c3a2020-05-18 12:06:33 +0000175 }
176 return nil
177}