Major refactoring: Split up "cryptfs" into several internal packages

"git status" for reference:

deleted:    cryptfs/cryptfs.go
deleted:    cryptfs/names_core.go
modified:   integration_tests/cli_test.go
modified:   integration_tests/helpers.go
renamed:    cryptfs/config_file.go -> internal/configfile/config_file.go
renamed:    cryptfs/config_test.go -> internal/configfile/config_test.go
renamed:    cryptfs/config_test/.gitignore -> internal/configfile/config_test/.gitignore
renamed:    cryptfs/config_test/PlaintextNames.conf -> internal/configfile/config_test/PlaintextNames.conf
renamed:    cryptfs/config_test/StrangeFeature.conf -> internal/configfile/config_test/StrangeFeature.conf
renamed:    cryptfs/config_test/v1.conf -> internal/configfile/config_test/v1.conf
renamed:    cryptfs/config_test/v2.conf -> internal/configfile/config_test/v2.conf
renamed:    cryptfs/kdf.go -> internal/configfile/kdf.go
renamed:    cryptfs/kdf_test.go -> internal/configfile/kdf_test.go
renamed:    cryptfs/cryptfs_content.go -> internal/contentenc/content.go
new file:   internal/contentenc/content_api.go
renamed:    cryptfs/content_test.go -> internal/contentenc/content_test.go
renamed:    cryptfs/file_header.go -> internal/contentenc/file_header.go
renamed:    cryptfs/intrablock.go -> internal/contentenc/intrablock.go
renamed:    cryptfs/address_translation.go -> internal/contentenc/offsets.go
new file:   internal/cryptocore/crypto_api.go
renamed:    cryptfs/gcm_go1.4.go -> internal/cryptocore/gcm_go1.4.go
renamed:    cryptfs/gcm_go1.5.go -> internal/cryptocore/gcm_go1.5.go
renamed:    cryptfs/nonce.go -> internal/cryptocore/nonce.go
renamed:    cryptfs/openssl_aead.go -> internal/cryptocore/openssl_aead.go
renamed:    cryptfs/openssl_benchmark.bash -> internal/cryptocore/openssl_benchmark.bash
renamed:    cryptfs/openssl_test.go -> internal/cryptocore/openssl_test.go
new file:   internal/nametransform/name_api.go
new file:   internal/nametransform/names_core.go
renamed:    cryptfs/names_diriv.go -> internal/nametransform/names_diriv.go
renamed:    cryptfs/names_noiv.go -> internal/nametransform/names_noiv.go
renamed:    cryptfs/names_test.go -> internal/nametransform/names_test.go
new file:   internal/nametransform/pad16.go
renamed:    cryptfs/log.go -> internal/toggledlog/log.go
renamed:    cryptfs/log_go1.4.go -> internal/toggledlog/log_go1.4.go
renamed:    cryptfs/log_go1.5.go -> internal/toggledlog/log_go1.5.go
modified:   main.go
modified:   masterkey.go
modified:   pathfs_frontend/file.go
modified:   pathfs_frontend/file_holes.go
modified:   pathfs_frontend/fs.go
modified:   pathfs_frontend/fs_dir.go
modified:   pathfs_frontend/names.go
modified:   test.bash

1 files changed, 0 insertions, 91 deletions

diff --git a/cryptfs/content_test.go b/cryptfs/content_test.go
deleted file mode 100644
index 3efa959..0000000
--- a/cryptfs/content_test.go
+++ /dev/null
@@ -1,91 +0,0 @@
-package cryptfs
-
-import (
-	"testing"
-)
-
-type testRange struct {
-	offset uint64
-	length uint64
-}
-
-func TestSplitRange(t *testing.T) {
-	var ranges []testRange
-
-	ranges = append(ranges, testRange{0, 70000},
-		testRange{0, 10},
-		testRange{234, 6511},
-		testRange{65444, 54},
-		testRange{0, 1024 * 1024},
-		testRange{0, 65536},
-		testRange{6654, 8945})
-
-	key := make([]byte, KEY_LEN)
-	f := NewCryptFS(key, true, false, true)
-
-	for _, r := range ranges {
-		parts := f.ExplodePlainRange(r.offset, r.length)
-		var lastBlockNo uint64 = 1 << 63
-		for _, p := range parts {
-			if p.BlockNo == lastBlockNo {
-				t.Errorf("Duplicate block number %d", p.BlockNo)
-			}
-			lastBlockNo = p.BlockNo
-			if p.Length > DEFAULT_PLAINBS || p.Skip >= DEFAULT_PLAINBS {
-				t.Errorf("Test fail: n=%d, length=%d, offset=%d\n", p.BlockNo, p.Length, p.Skip)
-			}
-		}
-	}
-}
-
-func TestCiphertextRange(t *testing.T) {
-	var ranges []testRange
-
-	ranges = append(ranges, testRange{0, 70000},
-		testRange{0, 10},
-		testRange{234, 6511},
-		testRange{65444, 54},
-		testRange{6654, 8945})
-
-	key := make([]byte, KEY_LEN)
-	f := NewCryptFS(key, true, false, true)
-
-	for _, r := range ranges {
-
-		blocks := f.ExplodePlainRange(r.offset, r.length)
-		alignedOffset, alignedLength := blocks[0].JointCiphertextRange(blocks)
-		skipBytes := blocks[0].Skip
-
-		if alignedLength < r.length {
-			t.Errorf("alignedLength=%d is smaller than length=%d", alignedLength, r.length)
-		}
-		if (alignedOffset-HEADER_LEN)%f.cipherBS != 0 {
-			t.Errorf("alignedOffset=%d is not aligned", alignedOffset)
-		}
-		if r.offset%f.plainBS != 0 && skipBytes == 0 {
-			t.Errorf("skipBytes=0")
-		}
-	}
-}
-
-func TestBlockNo(t *testing.T) {
-	key := make([]byte, KEY_LEN)
-	f := NewCryptFS(key, true, false, true)
-
-	b := f.CipherOffToBlockNo(788)
-	if b != 0 {
-		t.Errorf("actual: %d", b)
-	}
-	b = f.CipherOffToBlockNo(HEADER_LEN + f.cipherBS)
-	if b != 1 {
-		t.Errorf("actual: %d", b)
-	}
-	b = f.PlainOffToBlockNo(788)
-	if b != 0 {
-		t.Errorf("actual: %d", b)
-	}
-	b = f.PlainOffToBlockNo(f.plainBS)
-	if b != 1 {
-		t.Errorf("actual: %d", b)
-	}
-}