1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2008 Google Inc. All rights reserved.
3 // https://developers.google.com/protocol-buffers/
4 //
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are
7 // met:
8 //
9 // * Redistributions of source code must retain the above copyright
10 // notice, this list of conditions and the following disclaimer.
11 // * Redistributions in binary form must reproduce the above
12 // copyright notice, this list of conditions and the following disclaimer
13 // in the documentation and/or other materials provided with the
14 // distribution.
15 // * Neither the name of Google Inc. nor the names of its
16 // contributors may be used to endorse or promote products derived from
17 // this software without specific prior written permission.
18 //
19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31 #include <google/protobuf/any.h>
32
33 #include <google/protobuf/io/zero_copy_stream_impl_lite.h>
34 #include <google/protobuf/arenastring.h>
35 #include <google/protobuf/generated_message_util.h>
36 #include <google/protobuf/stubs/strutil.h>
37
38 namespace google {
39 namespace protobuf {
40 namespace internal {
41
GetTypeUrl(StringPiece message_name,StringPiece type_url_prefix)42 std::string GetTypeUrl(StringPiece message_name,
43 StringPiece type_url_prefix) {
44 if (!type_url_prefix.empty() &&
45 type_url_prefix[type_url_prefix.size() - 1] == '/') {
46 return StrCat(type_url_prefix, message_name);
47 } else {
48 return StrCat(type_url_prefix, "/", message_name);
49 }
50 }
51
52 const char kAnyFullTypeName[] = "google.protobuf.Any";
53 const char kTypeGoogleApisComPrefix[] = "type.googleapis.com/";
54 const char kTypeGoogleProdComPrefix[] = "type.googleprod.com/";
55
AnyMetadata(UrlType * type_url,ValueType * value)56 AnyMetadata::AnyMetadata(UrlType* type_url, ValueType* value)
57 : type_url_(type_url), value_(value) {}
58
InternalPackFrom(const MessageLite & message,StringPiece type_url_prefix,StringPiece type_name)59 void AnyMetadata::InternalPackFrom(const MessageLite& message,
60 StringPiece type_url_prefix,
61 StringPiece type_name) {
62 type_url_->SetNoArena(&::google::protobuf::internal::GetEmptyString(),
63 GetTypeUrl(type_name, type_url_prefix));
64 message.SerializeToString(value_->MutableNoArena(
65 &::google::protobuf::internal::GetEmptyStringAlreadyInited()));
66 }
67
InternalUnpackTo(StringPiece type_name,MessageLite * message) const68 bool AnyMetadata::InternalUnpackTo(StringPiece type_name,
69 MessageLite* message) const {
70 if (!InternalIs(type_name)) {
71 return false;
72 }
73 return message->ParseFromString(value_->GetNoArena());
74 }
75
76 namespace {
77
78 // The type URL could be stored in either an ArenaStringPtr or a
79 // StringPieceField, so we provide these helpers to get a string_view from
80 // either type. We use a template function as a way to avoid depending on
81 // StringPieceField.
82
83 template <typename T>
Get(const T * ptr)84 StringPiece Get(const T* ptr) {
85 return ptr->Get();
86 }
87
88 template <>
89 // NOLINTNEXTLINE: clang-diagnostic-unused-function
Get(const ArenaStringPtr * ptr)90 StringPiece Get(const ArenaStringPtr* ptr) {
91 return ptr->GetNoArena();
92 }
93
94 } // namespace
95
InternalIs(StringPiece type_name) const96 bool AnyMetadata::InternalIs(StringPiece type_name) const {
97 StringPiece type_url = Get(type_url_);
98 return type_url.size() >= type_name.size() + 1 &&
99 type_url[type_url.size() - type_name.size() - 1] == '/' &&
100 HasSuffixString(type_url, type_name);
101 }
102
ParseAnyTypeUrl(const std::string & type_url,std::string * url_prefix,std::string * full_type_name)103 bool ParseAnyTypeUrl(const std::string& type_url, std::string* url_prefix,
104 std::string* full_type_name) {
105 size_t pos = type_url.find_last_of("/");
106 if (pos == std::string::npos || pos + 1 == type_url.size()) {
107 return false;
108 }
109 if (url_prefix) {
110 *url_prefix = type_url.substr(0, pos + 1);
111 }
112 *full_type_name = type_url.substr(pos + 1);
113 return true;
114 }
115
ParseAnyTypeUrl(const std::string & type_url,std::string * full_type_name)116 bool ParseAnyTypeUrl(const std::string& type_url, std::string* full_type_name) {
117 return ParseAnyTypeUrl(type_url, nullptr, full_type_name);
118 }
119
120 } // namespace internal
121 } // namespace protobuf
122 } // namespace google
123