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-rw-r--r--tests/matrix/matrix_test.go436
1 files changed, 436 insertions, 0 deletions
diff --git a/tests/matrix/matrix_test.go b/tests/matrix/matrix_test.go
new file mode 100644
index 0000000..eb49d59
--- /dev/null
+++ b/tests/matrix/matrix_test.go
@@ -0,0 +1,436 @@
+package matrix
+
+// File reading, writing, modification, truncate
+//
+// Runs everything four times, for all combinations of
+// "-plaintextnames" and "-openssl".
+//
+// Test Matrix:
+// openssl=true openssl=false
+// plaintextnames=false X X
+// plaintextnames=true X X
+
+import (
+ "bytes"
+ "crypto/md5"
+ "encoding/hex"
+ "flag"
+ "fmt"
+ "io/ioutil"
+ "os"
+ "runtime"
+ "sync"
+ "syscall"
+ "testing"
+
+ "github.com/rfjakob/gocryptfs/tests/test_helpers"
+)
+
+// Several tests need to be aware if plaintextnames is active or not, so make this
+// a global variable
+var plaintextnames bool
+
+// This is the entry point for the tests
+func TestMain(m *testing.M) {
+ // Make "testing.Verbose()" return the correct value
+ flag.Parse()
+ for _, openssl := range []bool{true, false} {
+ for _, plaintextnames = range []bool{true, false} {
+ if testing.Verbose() {
+ fmt.Printf("Testing openssl=%v plaintextnames=%v\n", openssl, plaintextnames)
+
+ }
+ test_helpers.ResetTmpDir(plaintextnames)
+ opts := []string{"--zerokey"}
+ opts = append(opts, fmt.Sprintf("-openssl=%v", openssl))
+ opts = append(opts, fmt.Sprintf("-plaintextnames=%v", plaintextnames))
+ test_helpers.MountOrExit(test_helpers.DefaultCipherDir, test_helpers.DefaultPlainDir, opts...)
+ r := m.Run()
+ test_helpers.Unmount(test_helpers.DefaultPlainDir)
+ if r != 0 {
+ os.Exit(r)
+ }
+ }
+ }
+ os.Exit(0)
+}
+
+// Write "n" zero bytes to filename "fn", read again, compare hash
+func testWriteN(t *testing.T, fn string, n int) string {
+ file, err := os.Create(test_helpers.DefaultPlainDir + "/" + fn)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ d := make([]byte, n)
+ written, err := file.Write(d)
+ if err != nil || written != len(d) {
+ t.Errorf("err=\"%s\", written=%d", err, written)
+ }
+ err = file.Close()
+ if err != nil {
+ t.Error(err)
+ }
+
+ test_helpers.VerifySize(t, test_helpers.DefaultPlainDir+"/"+fn, n)
+
+ bin := md5.Sum(d)
+ hashWant := hex.EncodeToString(bin[:])
+
+ hashActual := test_helpers.Md5fn(test_helpers.DefaultPlainDir + "/" + fn)
+
+ if hashActual != hashWant {
+ t.Errorf("Wrong content, hashWant=%s hashActual=%s", hashWant, hashActual)
+ }
+
+ return hashActual
+}
+
+func TestWrite10(t *testing.T) {
+ testWriteN(t, "10", 10)
+}
+
+func TestWrite100(t *testing.T) {
+ testWriteN(t, "100", 100)
+}
+
+func TestWrite1M(t *testing.T) {
+ testWriteN(t, "1M", 1024*1024)
+}
+
+func TestWrite100x100(t *testing.T) {
+ hashWant := testWriteN(t, "100x100", 100)
+ // Read and check 100 times to catch race conditions
+ var i int
+ for i = 0; i < 100; i++ {
+ hashActual := test_helpers.Md5fn(test_helpers.DefaultPlainDir + "/100")
+ if hashActual != hashWant {
+ fmt.Printf("Read corruption in loop #%d\n", i)
+ t.FailNow()
+ } else {
+ //fmt.Print(".")
+ }
+ }
+}
+
+func TestTruncate(t *testing.T) {
+ fn := test_helpers.DefaultPlainDir + "/truncate"
+ file, err := os.Create(fn)
+ if err != nil {
+ t.FailNow()
+ }
+ // Grow to two blocks
+ file.Truncate(7000)
+ test_helpers.VerifySize(t, fn, 7000)
+ if test_helpers.Md5fn(fn) != "95d4ec7038e3e4fdbd5f15c34c3f0b34" {
+ t.Errorf("wrong content")
+ }
+ // Shrink - needs RMW
+ file.Truncate(6999)
+ test_helpers.VerifySize(t, fn, 6999)
+ if test_helpers.Md5fn(fn) != "35fd15873ec6c35380064a41b9b9683b" {
+ t.Errorf("wrong content")
+ }
+ // Shrink to one partial block
+ file.Truncate(465)
+ test_helpers.VerifySize(t, fn, 465)
+ if test_helpers.Md5fn(fn) != "a1534d6e98a6b21386456a8f66c55260" {
+ t.Errorf("wrong content")
+ }
+ // Grow to exactly one block
+ file.Truncate(4096)
+ test_helpers.VerifySize(t, fn, 4096)
+ if test_helpers.Md5fn(fn) != "620f0b67a91f7f74151bc5be745b7110" {
+ t.Errorf("wrong content")
+ }
+}
+
+func TestAppend(t *testing.T) {
+ fn := test_helpers.DefaultPlainDir + "/append"
+ file, err := os.Create(fn)
+ if err != nil {
+ t.FailNow()
+ }
+ data := []byte("testdata123456789") // length 17
+ var buf bytes.Buffer
+ var hashWant string
+ for i := 0; i <= 500; i++ {
+ file.Write(data)
+ buf.Write(data)
+ bin := md5.Sum(buf.Bytes())
+ hashWant = hex.EncodeToString(bin[:])
+ hashActual := test_helpers.Md5fn(fn)
+ if hashWant != hashActual {
+ t.FailNow()
+ }
+ }
+
+ // Overwrite with the same data
+ // Hash must stay the same
+ file.Seek(0, 0)
+ for i := 0; i <= 500; i++ {
+ file.Write(data)
+ hashActual := test_helpers.Md5fn(fn)
+ if hashWant != hashActual {
+ t.FailNow()
+ }
+ }
+}
+
+// Create a file with holes by writing to offset 0 (block #0) and
+// offset 4096 (block #1).
+func TestFileHoles(t *testing.T) {
+ fn := test_helpers.DefaultPlainDir + "/fileholes"
+ file, err := os.Create(fn)
+ if err != nil {
+ t.Errorf("file create failed")
+ }
+ foo := []byte("foo")
+ file.Write(foo)
+ file.WriteAt(foo, 4096)
+ _, err = ioutil.ReadFile(fn)
+ if err != nil {
+ t.Error(err)
+ }
+}
+
+// sContains - does the slice of strings "haystack" contain "needle"?
+func sContains(haystack []string, needle string) bool {
+ for _, element := range haystack {
+ if element == needle {
+ return true
+ }
+ }
+ return false
+}
+
+func TestRmwRace(t *testing.T) {
+
+ runtime.GOMAXPROCS(10)
+
+ fn := test_helpers.DefaultPlainDir + "/rmwrace"
+ f1, err := os.Create(fn)
+ if err != nil {
+ t.Fatalf("file create failed")
+ }
+ f2, err := os.Create(fn)
+ if err != nil {
+ t.Fatalf("file create failed")
+ }
+
+ oldBlock := bytes.Repeat([]byte("o"), 4096)
+
+ newBlock := bytes.Repeat([]byte("n"), 4096)
+
+ shortBlock := bytes.Repeat([]byte("s"), 16)
+
+ mergedBlock := make([]byte, 4096)
+ copy(mergedBlock, newBlock)
+ copy(mergedBlock[4080:], shortBlock)
+
+ goodMd5 := make(map[string]int)
+
+ for i := 0; i < 1000; i++ {
+ // Reset to [ooooooooo]
+ _, err = f1.WriteAt(oldBlock, 0)
+ if err != nil {
+ t.Fatalf("Write failed")
+ }
+
+ var wg sync.WaitGroup
+ wg.Add(2)
+
+ // Write to the end of the file, [....ssss]
+ go func() {
+ f1.WriteAt(shortBlock, 4080)
+ wg.Done()
+ }()
+
+ // Overwrite to [nnnnnnn]
+ go func() {
+ f2.WriteAt(newBlock, 0)
+ wg.Done()
+ }()
+
+ wg.Wait()
+
+ // The file should be either:
+ // [nnnnnnnnnn] (md5: 6c1660fdabccd448d1359f27b3db3c99) or
+ // [nnnnnnssss] (md5: da885006a6a284530a427c73ce1e5c32)
+ // but it must not be
+ // [oooooossss]
+
+ buf, _ := ioutil.ReadFile(fn)
+ m := test_helpers.Md5hex(buf)
+ goodMd5[m] = goodMd5[m] + 1
+
+ /*
+ if m == "6c1660fdabccd448d1359f27b3db3c99" {
+ fmt.Println(hex.Dump(buf))
+ t.FailNow()
+ }
+ */
+ }
+}
+
+// With "--plaintextnames", the name "/gocryptfs.conf" is reserved.
+// Otherwise there should be no restrictions.
+func TestFiltered(t *testing.T) {
+ filteredFile := test_helpers.DefaultPlainDir + "/gocryptfs.conf"
+ file, err := os.Create(filteredFile)
+ if plaintextnames == true && err == nil {
+ t.Errorf("should have failed but didn't")
+ } else if plaintextnames == false && err != nil {
+ t.Error(err)
+ }
+ file.Close()
+
+ err = os.Remove(filteredFile)
+ if plaintextnames == true && err == nil {
+ t.Errorf("should have failed but didn't")
+ } else if plaintextnames == false && err != nil {
+ t.Error(err)
+ }
+}
+
+func TestFilenameEncryption(t *testing.T) {
+ file, err := os.Create(test_helpers.DefaultPlainDir + "/TestFilenameEncryption.txt")
+ file.Close()
+ if err != nil {
+ t.Fatal(err)
+ }
+ _, err = os.Stat(test_helpers.DefaultCipherDir + "/TestFilenameEncryption.txt")
+ if plaintextnames == true && err != nil {
+ t.Errorf("plaintextnames not working: %v", err)
+ } else if plaintextnames == false && err == nil {
+ t.Errorf("file name encryption not working")
+ }
+}
+
+// Test Mkdir and Rmdir
+func testMkdirRmdir(t *testing.T) {
+ test_helpers.TestMkdirRmdir(t, test_helpers.DefaultPlainDir)
+}
+
+// Test Rename
+func testRename(t *testing.T) {
+ test_helpers.TestRename(t, test_helpers.DefaultPlainDir)
+}
+
+// Overwrite an empty directory with another directory
+func TestDirOverwrite(t *testing.T) {
+ dir1 := test_helpers.DefaultPlainDir + "/DirOverwrite1"
+ dir2 := test_helpers.DefaultPlainDir + "/DirOverwrite2"
+ err := os.Mkdir(dir1, 0777)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = os.Mkdir(dir2, 0777)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = os.Rename(dir1, dir2)
+ if err != nil {
+ t.Fatal(err)
+ }
+}
+
+func TestLongNames(t *testing.T) {
+ fi, err := ioutil.ReadDir(test_helpers.DefaultCipherDir)
+ if err != nil {
+ t.Fatal(err)
+ }
+ cnt1 := len(fi)
+ wd := test_helpers.DefaultPlainDir + "/"
+ // Create file with long name
+ n255x := string(bytes.Repeat([]byte("x"), 255))
+ f, err := os.Create(wd + n255x)
+ if err != nil {
+ t.Fatalf("Could not create n255x: %v", err)
+ }
+ f.Close()
+ if !test_helpers.VerifyExistence(wd + n255x) {
+ t.Errorf("n255x is not in directory listing")
+ }
+ // Rename long to long
+ n255y := string(bytes.Repeat([]byte("y"), 255))
+ err = os.Rename(wd+n255x, wd+n255y)
+ if err != nil {
+ t.Fatalf("Could not rename n255x to n255y: %v", err)
+ }
+ if !test_helpers.VerifyExistence(wd + n255y) {
+ t.Errorf("n255y is not in directory listing")
+ }
+ // Rename long to short
+ err = os.Rename(wd+n255y, wd+"short")
+ if err != nil {
+ t.Fatalf("Could not rename n255y to short: %v", err)
+ }
+ if !test_helpers.VerifyExistence(wd + "short") {
+ t.Errorf("short is not in directory listing")
+ }
+ // Rename short to long
+ err = os.Rename(wd+"short", wd+n255x)
+ if err != nil {
+ t.Fatalf("Could not rename short to n255x: %v", err)
+ }
+ if !test_helpers.VerifyExistence(wd + n255x) {
+ t.Errorf("255x is not in directory listing II")
+ }
+ // Unlink
+ err = syscall.Unlink(wd + n255x)
+ if err != nil {
+ t.Fatalf("Could not unlink n255x: %v", err)
+ }
+ if test_helpers.VerifyExistence(wd + n255x) {
+ t.Errorf("n255x still there after unlink")
+ }
+ // Long symlink
+ n255s := string(bytes.Repeat([]byte("s"), 255))
+ err = os.Symlink("/etc/motd", wd+n255s)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if !test_helpers.VerifyExistence(wd + n255s) {
+ t.Errorf("n255s is not in directory listing")
+ }
+ err = syscall.Unlink(wd + n255s)
+ if err != nil {
+ t.Error(err)
+ }
+ // Long dir
+ n255d := string(bytes.Repeat([]byte("d"), 255))
+ err = os.Mkdir(wd+n255d, 0777)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = syscall.Rmdir(wd + n255d)
+ if err != nil {
+ t.Error(err)
+ }
+ // Check for orphaned files
+ fi, err = ioutil.ReadDir(test_helpers.DefaultCipherDir)
+ if err != nil {
+ t.Fatal(err)
+ }
+ cnt2 := len(fi)
+ if cnt1 != cnt2 {
+ t.Errorf("Leftover files, cnt1=%d cnt2=%d", cnt1, cnt2)
+ }
+}
+
+func TestLchown(t *testing.T) {
+ name := test_helpers.DefaultPlainDir + "/symlink"
+ err := os.Symlink("/target/does/not/exist", name)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = os.Chown(name, os.Getuid(), os.Getgid())
+ if err == nil {
+ t.Error("Chown on dangling symlink should fail")
+ }
+ err = os.Lchown(name, os.Getuid(), os.Getgid())
+ if err != nil {
+ t.Error(err)
+ }
+}