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/*
* Copyright (C) 2020 Google LLC.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.linkerconfig.gts.utils.elements;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Section {
public Section() {
Namespace defaultNamespace = new Namespace();
defaultNamespace.name = "default";
namespaces.put("default", defaultNamespace);
}
static final String REGEX_ADDITIONAL_NAMESPACES =
"additional\\.namespaces\\s*=\\s*((?:[\\w]+)(?:,[\\w]+)*)";
static final String REGEX_NAMESPACE =
"namespace\\.(\\w+)\\.([^\\s=]+)\\s*(?:=|\\+=)\\s*([^\\s]+)";
static Pattern sAdditionalNamespacesPattern = Pattern.compile(REGEX_ADDITIONAL_NAMESPACES);
static Pattern sNamespacePattern = Pattern.compile(REGEX_NAMESPACE);
public String name;
public Map<String, Namespace> namespaces = new HashMap<>();
public Namespace getNamespaceFromName(String namespace) {
assertTrue("Failed to find namespace " + namespace + " from section " + name,
namespaces.containsKey(namespace));
return namespaces.get(namespace);
}
public void parseConfiguration(String line) {
Matcher additionalNamespacesMatcher = sAdditionalNamespacesPattern.matcher(line);
if (additionalNamespacesMatcher.matches()) {
assertEquals("Additional namespaces are already defined.", 1, namespaces.size());
String additionalNamespaces = additionalNamespacesMatcher.group(1);
for (String additionalNamespace : additionalNamespaces.split(",")) {
Namespace ns = new Namespace();
ns.name = additionalNamespace;
namespaces.put(additionalNamespace, ns);
}
return;
}
Matcher namespaceMatcher = sNamespacePattern.matcher(line);
assertTrue("Cannot parse : " + line, namespaceMatcher.matches());
String targetNamespace = namespaceMatcher.group(1);
String[] commands = namespaceMatcher.group(2).split("\\.");
String value = namespaceMatcher.group(3);
assertTrue("Cannot find namespace " + targetNamespace,
namespaces.containsKey(targetNamespace));
Namespace ns = getNamespaceFromName(targetNamespace);
assertTrue("Invalid command : " + namespaceMatcher.group(2) + " from " + line,
commands.length > 0);
switch (commands[0]) {
case "isolated":
assertEquals("Invalid command : " + line, 1, commands.length);
ns.isIsolated = Boolean.parseBoolean(value);
return;
case "visible":
assertEquals("Invalid command : " + line, 1, commands.length);
ns.isVisible = Boolean.parseBoolean(value);
return;
case "search":
assertEquals("Invalid command : " + line, 2, commands.length);
assertEquals("Invalid command : " + line, "paths", commands[1]);
if (!value.isEmpty()) {
ns.searchPaths.add(value);
}
return;
case "permitted":
assertEquals("Invalid command : " + line, 2, commands.length);
assertEquals("Invalid command : " + line, "paths", commands[1]);
if (!value.isEmpty()) {
ns.permittedPaths.add(value);
}
return;
case "asan":
case "hwasan":
// Do not parse configuration for hwasan or asan in this test
assertEquals("Invalid command : " + line, 3, commands.length);
assertTrue("Invalid command : " + line,
commands[1].equals("search") || commands[1].equals("permitted"));
assertEquals("Invalid command : " + line, "paths", commands[2]);
return;
case "links":
assertEquals("Invalid command : " + line, 1, commands.length);
for (String linkTarget : value.split(",")) {
assertTrue("Invalid target namespace : " + linkTarget + " from " + line,
namespaces.containsKey(linkTarget));
Link link = new Link();
link.from = ns;
link.to = getNamespaceFromName(linkTarget);
ns.links.put(linkTarget, link);
}
return;
case "link":
assertEquals("Invalid command : " + line, 3, commands.length);
String linkTarget = commands[1];
assertTrue("Link not defined : " + linkTarget + " from " + line,
ns.links.containsKey(linkTarget));
Link link = ns.links.get(linkTarget);
if (commands[2].equals("allow_all_shared_libs")) {
link.allowAll = Boolean.parseBoolean(value);
} else if (commands[2].equals("shared_libs")) {
String[] libs = value.split(":");
for (String lib : libs) {
link.libraries.add(lib);
}
} else {
fail("Invalid link command : " + line);
}
return;
case "whitelisted":
case "allowed_libs":
assertEquals("Invalid command : " + line, 1, commands.length);
// Do not parse allowed library list in this test
return;
}
fail("Unable to parse command : " + line);
return;
}
}
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