summaryrefslogtreecommitdiff
path: root/integration_tests/helpers.go
blob: 4881a4b1de7d69e820a567ac50da3fc812eabd83 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
package integration_tests

import (
	"crypto/md5"
	"encoding/hex"
	"fmt"
	"io/ioutil"
	"os"
	"os/exec"
	"path/filepath"
	"syscall"
	"testing"

	"github.com/rfjakob/gocryptfs/internal/nametransform"
)

// Note: the code assumes that all have a trailing slash
const tmpDir = "/tmp/gocryptfs_main_test/"
const defaultPlainDir = tmpDir + "plain/"
const defaultCipherDir = tmpDir + "cipher/"

const gocryptfsBinary = "../gocryptfs"

// resetTmpDir - delete old tmp dir, create new one, write gocryptfs.diriv
func resetTmpDir(plaintextNames bool) {

	// Try to unmount everything
	entries, err := ioutil.ReadDir(tmpDir)
	if err == nil {
		for _, e := range entries {
			fu := exec.Command("fusermount", "-z", "-u", filepath.Join(tmpDir, e.Name()))
			fu.Run()
		}
	}

	err = os.RemoveAll(tmpDir)
	if err != nil {
		fmt.Println("resetTmpDir: RemoveAll:" + err.Error())
		os.Exit(1)
	}

	err = os.MkdirAll(defaultPlainDir, 0777)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	err = os.MkdirAll(defaultCipherDir, 0777)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	if !plaintextNames {
		err = nametransform.WriteDirIV(defaultCipherDir)
		if err != nil {
			fmt.Println(err)
			os.Exit(1)
		}
	}
}

// mount CIPHERDIR "c" on PLAINDIR "p"
func mount(c string, p string, extraArgs ...string) error {
	var args []string
	args = append(args, extraArgs...)
	args = append(args, "-nosyslog", "-q", "-wpanic")
	//args = append(args, "-fusedebug")
	//args = append(args, "-d")
	args = append(args, c)
	args = append(args, p)
	cmd := exec.Command(gocryptfsBinary, args...)
	cmd.Stderr = os.Stderr
	cmd.Stdout = os.Stdout
	return cmd.Run()
}

// mountOrExit calls mount() and exits on failure.
func mountOrExit(c string, p string, extraArgs ...string) {
	err := mount(c, p, extraArgs...)
	if err != nil {
		fmt.Printf("mount failed: %v", err)
		os.Exit(1)
	}
}

// mountOrFatal calls mount() and calls t.Fatal() on failure.
func mountOrFatal(t *testing.T, c string, p string, extraArgs ...string) {
	err := mount(c, p, extraArgs...)
	if err != nil {
		t.Fatal(fmt.Errorf("mount failed: %v", err))
	}
}

// unmount PLAINDIR "p"
func unmount(p string) error {
	fu := exec.Command("fusermount", "-u", "-z", p)
	fu.Stdout = os.Stdout
	fu.Stderr = os.Stderr
	err := fu.Run()
	if err != nil {
		fmt.Println(err)
	}
	return err
}

// Return md5 string for file "filename"
func md5fn(filename string) string {
	buf, err := ioutil.ReadFile(filename)
	if err != nil {
		fmt.Printf("ReadFile: %v\n", err)
		return ""
	}
	return md5hex(buf)
}

// Return md5 string for "buf"
func md5hex(buf []byte) string {
	rawHash := md5.Sum(buf)
	hash := hex.EncodeToString(rawHash[:])
	return hash
}

// Verify that the file size equals "want". This checks:
// 1) Size reported by Stat()
// 2) Number of bytes returned when reading the whole file
func verifySize(t *testing.T, path string, want int) {
	buf, err := ioutil.ReadFile(path)
	if err != nil {
		t.Errorf("ReadFile failed: %v", err)
	} else if len(buf) != want {
		t.Errorf("wrong read size: got=%d want=%d", len(buf), want)
	}

	fi, err := os.Stat(path)
	if err != nil {
		t.Errorf("Stat failed: %v", err)
	} else if fi.Size() != int64(want) {
		t.Errorf("wrong stat file size, got=%d want=%d", fi.Size(), want)
	}
}

// Create and delete a directory
func testMkdirRmdir(t *testing.T, plainDir string) {
	dir := plainDir + "dir1"
	err := os.Mkdir(dir, 0777)
	if err != nil {
		t.Fatal(err)
	}
	err = syscall.Rmdir(dir)
	if err != nil {
		t.Fatal(err)
	}

	// Removing a non-empty dir should fail with ENOTEMPTY
	if os.Mkdir(dir, 0777) != nil {
		t.Fatal(err)
	}
	f, err := os.Create(dir + "/file")
	if err != nil {
		t.Fatal(err)
	}
	f.Close()
	err = syscall.Rmdir(dir)
	errno := err.(syscall.Errno)
	if errno != syscall.ENOTEMPTY {
		t.Errorf("Should have gotten ENOTEMPTY, go %v", errno)
	}
	if syscall.Unlink(dir+"/file") != nil {
		t.Fatal(err)
	}
	if syscall.Rmdir(dir) != nil {
		t.Fatal(err)
	}

	// We should also be able to remove a directory we do not have permissions to
	// read or write
	err = os.Mkdir(dir, 0000)
	if err != nil {
		t.Fatal(err)
	}
	err = syscall.Rmdir(dir)
	if err != nil {
		// Make sure the directory can cleaned up by the next test run
		os.Chmod(dir, 0700)
		t.Fatal(err)
	}
}

// Create and rename a file
func testRename(t *testing.T, plainDir string) {
	file1 := plainDir + "rename1"
	file2 := plainDir + "rename2"
	err := ioutil.WriteFile(file1, []byte("content"), 0777)
	if err != nil {
		t.Fatal(err)
	}
	err = syscall.Rename(file1, file2)
	if err != nil {
		t.Fatal(err)
	}
	syscall.Unlink(file2)
}

// verifyExistence - check in 3 ways that "path" exists:
// stat, open, readdir
func verifyExistence(path string) bool {

	// Check that file can be stated
	_, err := os.Stat(path)
	if err != nil {
		//t.Log(err)
		return false
	}

	// Check that file can be opened
	fd, err := os.Open(path)
	if err != nil {
		//t.Log(err)
		return false
	}
	fd.Close()

	// Check that file shows up in directory listing
	dir := filepath.Dir(path)
	name := filepath.Base(path)
	fi, err := ioutil.ReadDir(dir)
	if err != nil {
		//t.Log(err)
		return false
	}
	for _, i := range fi {
		if i.Name() == name {
			return true
		}
	}
	return false
}