67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
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package cli
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import (
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"fmt"
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"io/ioutil"
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"os"
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"syscall"
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"testing"
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"github.com/rfjakob/gocryptfs/v2/internal/configfile"
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"github.com/rfjakob/gocryptfs/v2/tests/test_helpers"
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)
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// Create "-xchacha" fs
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func TestInitXchacha(t *testing.T) {
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cDir := test_helpers.InitFS(nil, "-xchacha")
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// Check config file sanity
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_, c, err := configfile.LoadAndDecrypt(cDir+"/"+configfile.ConfDefaultName, testPw)
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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if c.IsFeatureFlagSet(configfile.FlagGCMIV128) {
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t.Error("GCMIV128 flag should be off")
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}
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if !c.IsFeatureFlagSet(configfile.FlagXChaCha20Poly1305) {
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t.Error("XChaCha20Poly1305 flag should be on")
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}
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if !c.IsFeatureFlagSet(configfile.FlagHKDF) {
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t.Error("HKDF flag should be on")
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}
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}
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// Create and mount "-xchacha" fs, and see if we get the expected file sizes
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// (xchacha has longer IVs).
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func TestXchacha(t *testing.T) {
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cDir := test_helpers.InitFS(nil, "-xchacha", "-plaintextnames")
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pDir := cDir + ".mnt"
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test_helpers.MountOrExit(cDir, pDir, "-extpass", "echo test")
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defer test_helpers.UnmountPanic(pDir)
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if err := ioutil.WriteFile(pDir+"/1byte", []byte("x"), 0700); err != nil {
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t.Fatal(err)
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}
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var st syscall.Stat_t
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if err := syscall.Stat(cDir+"/1byte", &st); err != nil {
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t.Fatal(err)
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}
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// 2 byte version header + 16 byte file id + 192 bit xchacha iv + 1 byte payload + 16 byte mac
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if st.Size != 2+16+24+1+16 {
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t.Errorf("wrong size %d", st.Size)
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}
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// 1 MiB = 256 4kiB blocks
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if err := ioutil.WriteFile(pDir+"/1MiB", make([]byte, 1024*1024), 0700); err != nil {
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t.Fatal(err)
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}
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if err := syscall.Stat(cDir+"/1MiB", &st); err != nil {
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t.Fatal(err)
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}
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// 2 byte version header + (16 byte file id + 192 bit xchacha iv + 4096 byte payload + 16 byte mac)*256
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if st.Size != 2+16+(24+4096+16)*256 {
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t.Errorf("wrong size %d", st.Size)
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}
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}
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