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100 lines
3.1 KiB
100 lines
3.1 KiB
/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* test_utils.cpp - miscellaneous unit test utilities.
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*/
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#include <cstdio>
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#include <string>
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#include <vector>
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#include <android-base/stringprintf.h>
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#include "test_utils.h"
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#define IP_PATH "/system/bin/ip"
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using android::base::StringPrintf;
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int randomUid() {
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// Pick a random UID consisting of:
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// - Random user profile (0 - 6)
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// - Random app ID starting from 12000 (FIRST_APPLICATION_UID + 2000). This ensures no conflicts
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// with existing app UIDs unless the user has installed more than 2000 apps, and is still less
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// than LAST_APPLICATION_UID (19999).
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return 100000 * arc4random_uniform(7) + 12000 + arc4random_uniform(3000);
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}
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std::vector<std::string> runCommand(const std::string& command) {
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std::vector<std::string> lines;
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FILE* f = popen(command.c_str(), "r"); // NOLINT(cert-env33-c)
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if (f == nullptr) {
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perror("popen");
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return lines;
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}
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char* line = nullptr;
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size_t bufsize = 0;
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ssize_t linelen = 0;
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while ((linelen = getline(&line, &bufsize, f)) >= 0) {
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lines.push_back(std::string(line, linelen));
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free(line);
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line = nullptr;
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}
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pclose(f);
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return lines;
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}
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std::vector<std::string> listIpRules(const char* ipVersion) {
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std::string command = StringPrintf("%s %s rule list", IP_PATH, ipVersion);
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return runCommand(command);
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}
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std::vector<std::string> listIptablesRule(const char* binary, const char* chainName) {
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std::string command = StringPrintf("%s -w -n -L %s", binary, chainName);
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return runCommand(command);
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}
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int iptablesRuleLineLength(const char* binary, const char* chainName) {
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return listIptablesRule(binary, chainName).size();
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}
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bool iptablesRuleExists(const char* binary, const char* chainName,
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const std::string& expectedRule) {
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std::vector<std::string> rules = listIptablesRule(binary, chainName);
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for (const auto& rule : rules) {
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if (rule.find(expectedRule) != std::string::npos) {
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return true;
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}
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}
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return false;
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}
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std::vector<std::string> listIpRoutes(const char* ipVersion, const char* table) {
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std::string command = StringPrintf("%s %s route ls table %s", IP_PATH, ipVersion, table);
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return runCommand(command);
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}
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bool ipRouteExists(const char* ipVersion, const char* table, const std::string& ipRoute) {
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std::vector<std::string> routes = listIpRoutes(ipVersion, table);
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for (const auto& route : routes) {
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if (route.find(ipRoute) != std::string::npos) {
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return true;
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}
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}
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return false;
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}
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