1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "java/ManifestClassGenerator.h"
18
19 #include <algorithm>
20
21 #include "androidfw/Source.h"
22 #include "java/ClassDefinition.h"
23 #include "java/JavaClassGenerator.h"
24 #include "text/Unicode.h"
25 #include "xml/XmlDom.h"
26
27 using ::aapt::text::IsJavaIdentifier;
28
29 namespace aapt {
30
ExtractJavaIdentifier(android::IDiagnostics * diag,const android::Source & source,const std::string & value)31 static std::optional<std::string> ExtractJavaIdentifier(android::IDiagnostics* diag,
32 const android::Source& source,
33 const std::string& value) {
34 std::string result = value;
35 size_t pos = value.rfind('.');
36 if (pos != std::string::npos) {
37 result = result.substr(pos + 1);
38 }
39
40 // Normalize only the java identifier, leave the original value unchanged.
41 if (result.find('-') != std::string::npos) {
42 result = JavaClassGenerator::TransformToFieldName(result);
43 }
44
45 if (result.empty()) {
46 diag->Error(android::DiagMessage(source) << "empty symbol");
47 return {};
48 }
49
50 if (!IsJavaIdentifier(result)) {
51 diag->Error(android::DiagMessage(source) << "invalid Java identifier '" << result << "'");
52 return {};
53 }
54 return result;
55 }
56
WriteSymbol(const android::Source & source,android::IDiagnostics * diag,xml::Element * el,ClassDefinition * class_def)57 static bool WriteSymbol(const android::Source& source, android::IDiagnostics* diag,
58 xml::Element* el, ClassDefinition* class_def) {
59 xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name");
60 if (!attr) {
61 diag->Error(android::DiagMessage(source) << "<" << el->name << "> must define 'android:name'");
62 return false;
63 }
64
65 std::optional<std::string> result =
66 ExtractJavaIdentifier(diag, source.WithLine(el->line_number), attr->value);
67 if (!result) {
68 return false;
69 }
70
71 std::unique_ptr<StringMember> string_member =
72 util::make_unique<StringMember>(result.value(), attr->value);
73 string_member->GetCommentBuilder()->AppendComment(el->comment);
74
75 if (class_def->AddMember(std::move(string_member)) == ClassDefinition::Result::kOverridden) {
76 diag->Warn(android::DiagMessage(source.WithLine(el->line_number))
77 << "duplicate definitions of '" << result.value() << "', overriding previous");
78 }
79 return true;
80 }
81
GenerateManifestClass(android::IDiagnostics * diag,xml::XmlResource * res)82 std::unique_ptr<ClassDefinition> GenerateManifestClass(android::IDiagnostics* diag,
83 xml::XmlResource* res) {
84 xml::Element* el = xml::FindRootElement(res->root.get());
85 if (!el) {
86 diag->Error(android::DiagMessage(res->file.source) << "no root tag defined");
87 return {};
88 }
89
90 if (el->name != "manifest" && !el->namespace_uri.empty()) {
91 diag->Error(android::DiagMessage(res->file.source) << "no <manifest> root tag defined");
92 return {};
93 }
94
95 std::unique_ptr<ClassDefinition> permission_class =
96 util::make_unique<ClassDefinition>("permission", ClassQualifier::kStatic, false);
97 std::unique_ptr<ClassDefinition> permission_group_class =
98 util::make_unique<ClassDefinition>("permission_group", ClassQualifier::kStatic, false);
99
100 bool error = false;
101 std::vector<xml::Element*> children = el->GetChildElements();
102 for (xml::Element* child_el : children) {
103 if (child_el->namespace_uri.empty()) {
104 if (child_el->name == "permission") {
105 error |= !WriteSymbol(res->file.source, diag, child_el, permission_class.get());
106 } else if (child_el->name == "permission-group") {
107 error |= !WriteSymbol(res->file.source, diag, child_el, permission_group_class.get());
108 }
109 }
110 }
111
112 if (error) {
113 return {};
114 }
115
116 std::unique_ptr<ClassDefinition> manifest_class =
117 util::make_unique<ClassDefinition>("Manifest", ClassQualifier::kNone, false);
118 manifest_class->AddMember(std::move(permission_class));
119 manifest_class->AddMember(std::move(permission_group_class));
120 return manifest_class;
121 }
122
123 } // namespace aapt
124