Mike Frysinger | 50e31fa | 2018-01-19 18:59:49 -0500 | [diff] [blame] | 1 | /* Copyright 2018 The Chromium OS Authors. All rights reserved. |
| 2 | * Use of this source code is governed by a BSD-style license that can be |
| 3 | * found in the LICENSE file. |
| 4 | * |
| 5 | * Test util.[ch] module code using gtest. |
| 6 | */ |
Mike Frysinger | 32c3992 | 2018-01-17 17:09:54 -0500 | [diff] [blame] | 7 | |
| 8 | #include <stdio.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <string.h> |
| 11 | #include <sys/stat.h> |
| 12 | #include <unistd.h> |
| 13 | |
| 14 | #include <gtest/gtest.h> |
| 15 | |
| 16 | #include "util.h" |
| 17 | |
Mattias Nissler | b35f2c1 | 2020-02-07 13:37:36 +0100 | [diff] [blame] | 18 | namespace { |
| 19 | |
| 20 | std::string dump_env(const char *const *env) { |
| 21 | std::string result; |
| 22 | for (; *env; ++env) { |
| 23 | result += *env; |
| 24 | result += "\n"; |
| 25 | } |
| 26 | |
| 27 | return result; |
| 28 | } |
| 29 | |
| 30 | } // namespace |
| 31 | |
Mike Frysinger | 32c3992 | 2018-01-17 17:09:54 -0500 | [diff] [blame] | 32 | // Sanity check for the strip func. |
| 33 | TEST(strip, basic) { |
| 34 | char str[] = " foo\t"; |
| 35 | ASSERT_EQ("foo", std::string(strip(str))); |
| 36 | } |
| 37 | |
| 38 | // Make sure we don't crash with various "null"-like inputs. |
| 39 | TEST(tokenize, null_stringp) { |
| 40 | ASSERT_EQ(nullptr, tokenize(nullptr, nullptr)); |
| 41 | ASSERT_EQ(nullptr, tokenize(nullptr, "")); |
| 42 | ASSERT_EQ(nullptr, tokenize(nullptr, ",")); |
| 43 | |
| 44 | char *p = nullptr; |
| 45 | ASSERT_EQ(nullptr, tokenize(&p, nullptr)); |
| 46 | } |
| 47 | |
| 48 | // Make sure we don't crash with various "null"-like inputs. |
| 49 | TEST(tokenize, null_delim) { |
| 50 | char str[] = "a,b,c"; |
| 51 | char *p = str; |
| 52 | ASSERT_EQ(str, tokenize(&p, nullptr)); |
| 53 | ASSERT_EQ(nullptr, p); |
| 54 | ASSERT_EQ(str, std::string("a,b,c")); |
| 55 | |
| 56 | p = str; |
| 57 | ASSERT_EQ(str, tokenize(&p, "")); |
| 58 | ASSERT_EQ(nullptr, p); |
| 59 | ASSERT_EQ(str, std::string("a,b,c")); |
| 60 | } |
| 61 | |
| 62 | // Sanity check for the tokenize func. |
| 63 | TEST(tokenize, basic) { |
| 64 | char str[] = "a,b,c"; |
| 65 | char *p = str; |
| 66 | ASSERT_EQ("a", std::string(tokenize(&p, ","))); |
| 67 | ASSERT_EQ("b", std::string(tokenize(&p, ","))); |
| 68 | ASSERT_EQ("c", std::string(tokenize(&p, ","))); |
| 69 | ASSERT_EQ(nullptr, p); |
| 70 | ASSERT_EQ(nullptr, tokenize(&p, ",")); |
| 71 | } |
Mike Frysinger | b4c7e77 | 2018-01-17 17:40:15 -0500 | [diff] [blame] | 72 | |
| 73 | // Check edge case with an empty string. |
| 74 | TEST(tokenize, empty_string) { |
| 75 | char str[] = ""; |
| 76 | char *p = str; |
| 77 | ASSERT_EQ("", std::string(tokenize(&p, ","))); |
| 78 | ASSERT_EQ(nullptr, p); |
| 79 | ASSERT_EQ(nullptr, tokenize(&p, ",")); |
| 80 | } |
| 81 | |
| 82 | // Check behavior with empty tokens at the start/middle/end. |
| 83 | TEST(tokenize, empty_tokens) { |
| 84 | char str[] = ",,a,b,,,c,,"; |
| 85 | char *p = str; |
| 86 | ASSERT_EQ("", std::string(tokenize(&p, ","))); |
| 87 | ASSERT_EQ("", std::string(tokenize(&p, ","))); |
| 88 | ASSERT_EQ("a", std::string(tokenize(&p, ","))); |
| 89 | ASSERT_EQ("b", std::string(tokenize(&p, ","))); |
| 90 | ASSERT_EQ("", std::string(tokenize(&p, ","))); |
| 91 | ASSERT_EQ("", std::string(tokenize(&p, ","))); |
| 92 | ASSERT_EQ("c", std::string(tokenize(&p, ","))); |
| 93 | ASSERT_EQ("", std::string(tokenize(&p, ","))); |
| 94 | ASSERT_EQ("", std::string(tokenize(&p, ","))); |
| 95 | ASSERT_EQ(nullptr, p); |
| 96 | ASSERT_EQ(nullptr, tokenize(&p, ",")); |
| 97 | } |
Mattias Nissler | b35f2c1 | 2020-02-07 13:37:36 +0100 | [diff] [blame] | 98 | |
| 99 | // Check environment manipulation functions. |
| 100 | TEST(environment, copy_and_modify) { |
| 101 | minijail_free_env(nullptr); |
| 102 | |
| 103 | char **env = minijail_copy_env(nullptr); |
| 104 | EXPECT_EQ("", dump_env(env)); |
| 105 | minijail_free_env(env); |
| 106 | |
| 107 | const char *const kConstEnv[] = { |
| 108 | "val1=1", |
| 109 | "val2=2", |
| 110 | "dup=1", |
| 111 | "dup=2", |
| 112 | "empty=", |
| 113 | nullptr, |
| 114 | }; |
| 115 | |
| 116 | // libc unfortunately uses char* const[] as the type for the environment, and |
| 117 | // we match that. It's actually missing a const-ness of the chars making up |
| 118 | // the environment strings, but we need that to initialize the |kEnv| |
| 119 | // constant. Hence, do a cast here to force things into alignment... |
| 120 | char* const* kEnv = const_cast<char* const*>(kConstEnv); |
| 121 | |
| 122 | env = minijail_copy_env(kEnv); |
| 123 | EXPECT_EQ("val1=1\nval2=2\ndup=1\ndup=2\nempty=\n", dump_env(env)); |
| 124 | minijail_free_env(env); |
| 125 | |
| 126 | env = minijail_copy_env(kEnv); |
| 127 | EXPECT_EQ("val1=1\nval2=2\ndup=1\ndup=2\nempty=\n", dump_env(env)); |
| 128 | |
| 129 | EXPECT_EQ(EINVAL, minijail_setenv(nullptr, "val1", "3", 1)); |
| 130 | char **env_ret = nullptr; |
| 131 | EXPECT_EQ(EINVAL, minijail_setenv(&env_ret, "val1", "3", 1)); |
| 132 | |
| 133 | env_ret = env; |
| 134 | EXPECT_EQ(EINVAL, minijail_setenv(&env_ret, nullptr, "3", 1)); |
| 135 | EXPECT_EQ(env, env_ret); |
| 136 | EXPECT_EQ(EINVAL, minijail_setenv(&env_ret, "", "3", 1)); |
| 137 | EXPECT_EQ(env, env_ret); |
| 138 | EXPECT_EQ(EINVAL, minijail_setenv(&env_ret, "", nullptr, 1)); |
| 139 | EXPECT_EQ(env, env_ret); |
| 140 | |
| 141 | EXPECT_EQ(0, minijail_setenv(&env, "val1", "3", 0)); |
| 142 | EXPECT_EQ("val1=1\nval2=2\ndup=1\ndup=2\nempty=\n", dump_env(env)); |
| 143 | EXPECT_EQ(0, minijail_setenv(&env, "val1", "3", 1)); |
| 144 | EXPECT_EQ("val1=3\nval2=2\ndup=1\ndup=2\nempty=\n", dump_env(env)); |
| 145 | EXPECT_EQ(0, minijail_setenv(&env, "val2", "4", 1)); |
| 146 | EXPECT_EQ("val1=3\nval2=4\ndup=1\ndup=2\nempty=\n", dump_env(env)); |
| 147 | EXPECT_EQ(0, minijail_setenv(&env, "dup", "5", 1)); |
| 148 | EXPECT_EQ("val1=3\nval2=4\ndup=5\ndup=2\nempty=\n", dump_env(env)); |
| 149 | EXPECT_EQ(0, minijail_setenv(&env, "empty", "6", 1)); |
| 150 | EXPECT_EQ("val1=3\nval2=4\ndup=5\ndup=2\nempty=6\n", dump_env(env)); |
| 151 | EXPECT_EQ(0, minijail_setenv(&env, "empty", "", 1)); |
| 152 | EXPECT_EQ("val1=3\nval2=4\ndup=5\ndup=2\nempty=\n", dump_env(env)); |
| 153 | EXPECT_EQ(0, minijail_setenv(&env, "new1", "7", 0)); |
| 154 | EXPECT_EQ("val1=3\nval2=4\ndup=5\ndup=2\nempty=\nnew1=7\n", dump_env(env)); |
| 155 | EXPECT_EQ(0, minijail_setenv(&env, "new2", "8", 1)); |
| 156 | EXPECT_EQ("val1=3\nval2=4\ndup=5\ndup=2\nempty=\nnew1=7\nnew2=8\n", |
| 157 | dump_env(env)); |
| 158 | |
| 159 | minijail_free_env(env); |
| 160 | } |