| // Copyright 2014 The Crashpad Authors. All rights reserved. |
| // |
| // 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. |
| |
| #include "util/posix/process_info.h" |
| |
| #include <time.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| #include "base/files/scoped_file.h" |
| #include "build/build_config.h" |
| #include "gtest/gtest.h" |
| #include "test/errors.h" |
| #include "util/misc/implicit_cast.h" |
| |
| #if defined(OS_MACOSX) |
| #include <crt_externs.h> |
| #endif |
| |
| namespace crashpad { |
| namespace test { |
| namespace { |
| |
| void TestSelfProcess(const ProcessInfo& process_info) { |
| EXPECT_EQ(getpid(), process_info.ProcessID()); |
| EXPECT_EQ(getppid(), process_info.ParentProcessID()); |
| |
| // There’s no system call to obtain the saved set-user ID or saved set-group |
| // ID in an easy way. Normally, they are the same as the effective user ID and |
| // effective group ID, so just check against those. |
| EXPECT_EQ(getuid(), process_info.RealUserID()); |
| const uid_t euid = geteuid(); |
| EXPECT_EQ(euid, process_info.EffectiveUserID()); |
| EXPECT_EQ(euid, process_info.SavedUserID()); |
| const gid_t gid = getgid(); |
| EXPECT_EQ(gid, process_info.RealGroupID()); |
| const gid_t egid = getegid(); |
| EXPECT_EQ(egid, process_info.EffectiveGroupID()); |
| EXPECT_EQ(egid, process_info.SavedGroupID()); |
| |
| // Test SupplementaryGroups(). |
| int group_count = getgroups(0, nullptr); |
| ASSERT_GE(group_count, 0) << ErrnoMessage("getgroups"); |
| |
| std::vector<gid_t> group_vector(group_count); |
| if (group_count > 0) { |
| group_count = getgroups(group_vector.size(), &group_vector[0]); |
| ASSERT_GE(group_count, 0) << ErrnoMessage("getgroups"); |
| ASSERT_EQ(group_vector.size(), implicit_cast<size_t>(group_count)); |
| } |
| |
| std::set<gid_t> group_set(group_vector.begin(), group_vector.end()); |
| EXPECT_EQ(group_set, process_info.SupplementaryGroups()); |
| |
| // Test AllGroups(), which is SupplementaryGroups() plus the real, effective, |
| // and saved set-group IDs. The effective and saved set-group IDs are expected |
| // to be identical (see above). |
| group_set.insert(gid); |
| group_set.insert(egid); |
| |
| EXPECT_EQ(group_set, process_info.AllGroups()); |
| |
| // The test executable isn’t expected to change privileges. |
| EXPECT_FALSE(process_info.DidChangePrivileges()); |
| |
| #if defined(ARCH_CPU_64_BITS) |
| EXPECT_TRUE(process_info.Is64Bit()); |
| #else |
| EXPECT_FALSE(process_info.Is64Bit()); |
| #endif |
| |
| // Test StartTime(). This program must have started at some time in the past. |
| timeval start_time; |
| process_info.StartTime(&start_time); |
| time_t now; |
| time(&now); |
| EXPECT_LE(start_time.tv_sec, now); |
| |
| std::vector<std::string> argv; |
| ASSERT_TRUE(process_info.Arguments(&argv)); |
| |
| // gtest argv processing scrambles argv, but it leaves argc and argv[0] |
| // intact, so test those. |
| |
| #if defined(OS_MACOSX) |
| int expect_argc = *_NSGetArgc(); |
| char** expect_argv = *_NSGetArgv(); |
| #elif defined(OS_LINUX) || defined(OS_ANDROID) |
| std::vector<std::string> expect_arg_vector; |
| { |
| base::ScopedFILE cmdline(fopen("/proc/self/cmdline", "r")); |
| ASSERT_NE(nullptr, cmdline.get()) << ErrnoMessage("fopen"); |
| |
| int expect_arg_char; |
| std::string expect_arg_string; |
| while ((expect_arg_char = fgetc(cmdline.get())) != EOF) { |
| if (expect_arg_char != '\0') { |
| expect_arg_string.append(1, expect_arg_char); |
| } else { |
| expect_arg_vector.push_back(expect_arg_string); |
| expect_arg_string.clear(); |
| } |
| } |
| ASSERT_EQ(0, ferror(cmdline.get())) << ErrnoMessage("fgetc"); |
| ASSERT_TRUE(expect_arg_string.empty()); |
| } |
| |
| std::vector<const char*> expect_argv_storage; |
| for (const std::string& expect_arg_string : expect_arg_vector) { |
| expect_argv_storage.push_back(expect_arg_string.c_str()); |
| } |
| |
| int expect_argc = expect_argv_storage.size(); |
| const char* const* expect_argv = |
| !expect_argv_storage.empty() ? &expect_argv_storage[0] : nullptr; |
| #else |
| #error Obtain expect_argc and expect_argv correctly on your system. |
| #endif |
| |
| int argc = implicit_cast<int>(argv.size()); |
| EXPECT_EQ(expect_argc, argc); |
| |
| ASSERT_GE(expect_argc, 1); |
| ASSERT_GE(argc, 1); |
| |
| EXPECT_EQ(std::string(expect_argv[0]), argv[0]); |
| } |
| |
| |
| TEST(ProcessInfo, Self) { |
| ProcessInfo process_info; |
| ASSERT_TRUE(process_info.Initialize(getpid())); |
| TestSelfProcess(process_info); |
| } |
| |
| #if defined(OS_MACOSX) |
| TEST(ProcessInfo, SelfTask) { |
| ProcessInfo process_info; |
| ASSERT_TRUE(process_info.InitializeFromTask(mach_task_self())); |
| TestSelfProcess(process_info); |
| } |
| #endif |
| |
| TEST(ProcessInfo, Pid1) { |
| // PID 1 is expected to be init or the system’s equivalent. This tests reading |
| // information about another process. |
| ProcessInfo process_info; |
| ASSERT_TRUE(process_info.Initialize(1)); |
| |
| EXPECT_EQ(implicit_cast<pid_t>(1), process_info.ProcessID()); |
| EXPECT_EQ(implicit_cast<pid_t>(0), process_info.ParentProcessID()); |
| EXPECT_EQ(implicit_cast<uid_t>(0), process_info.RealUserID()); |
| EXPECT_EQ(implicit_cast<uid_t>(0), process_info.EffectiveUserID()); |
| EXPECT_EQ(implicit_cast<uid_t>(0), process_info.SavedUserID()); |
| EXPECT_EQ(implicit_cast<gid_t>(0), process_info.RealGroupID()); |
| EXPECT_EQ(implicit_cast<gid_t>(0), process_info.EffectiveGroupID()); |
| EXPECT_EQ(implicit_cast<gid_t>(0), process_info.SavedGroupID()); |
| EXPECT_FALSE(process_info.AllGroups().empty()); |
| } |
| |
| } // namespace |
| } // namespace test |
| } // namespace crashpad |