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dropbox: support Dropbox content hashing scheme - fixes #1302

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* add support to hashing module
  * add dbhashsum to list the hashes
  * add support to dropbox module

This means objects up and downloaded to/from Dropbox will have their
hashes checked.

Note after this change local objects are calculating MD5, SHA1 and
DBHASH which is excessive and needs to be fixed.
This commit is contained in:
Nick Craig-Wood
2017-05-26 15:09:31 +01:00
parent 8916455e4f
commit 6381959850
8 changed files with 85 additions and 37 deletions
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18
fs/hash_test.go
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@@ -65,16 +65,18 @@ var hashTestSet = []hashTest{
{
input: []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14},
output: map[fs.HashType]string{
fs.HashMD5: "bf13fc19e5151ac57d4252e0e0f87abe",
fs.HashSHA1: "3ab6543c08a75f292a5ecedac87ec41642d12166",
fs.HashMD5: "bf13fc19e5151ac57d4252e0e0f87abe",
fs.HashSHA1: "3ab6543c08a75f292a5ecedac87ec41642d12166",
fs.HashDropbox: "214d2fcf3566e94c99ad2f59bd993daca46d8521a0c447adf4b324f53fddc0c7",
},
},
// Empty data set
{
input: []byte{},
output: map[fs.HashType]string{
fs.HashMD5: "d41d8cd98f00b204e9800998ecf8427e",
fs.HashSHA1: "da39a3ee5e6b4b0d3255bfef95601890afd80709",
fs.HashMD5: "d41d8cd98f00b204e9800998ecf8427e",
fs.HashSHA1: "da39a3ee5e6b4b0d3255bfef95601890afd80709",
fs.HashDropbox: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
},
},
}
@@ -88,13 +90,13 @@ func TestMultiHasher(t *testing.T) {
sums := mh.Sums()
for k, v := range sums {
expect, ok := test.output[k]
require.True(t, ok)
require.True(t, ok, "test output for hash not found")
assert.Equal(t, v, expect)
}
// Test that all are present
for k, v := range test.output {
expect, ok := sums[k]
require.True(t, ok)
require.True(t, ok, "test output for hash not found")
assert.Equal(t, v, expect)
}
}
@@ -145,8 +147,8 @@ func TestHashStreamTypes(t *testing.T) {
}
func TestHashSetStringer(t *testing.T) {
h := fs.NewHashSet(fs.HashSHA1, fs.HashMD5)
assert.Equal(t, h.String(), "[MD5, SHA-1]")
h := fs.NewHashSet(fs.HashSHA1, fs.HashMD5, fs.HashDropbox)
assert.Equal(t, h.String(), "[MD5, SHA-1, DropboxHash]")
h = fs.NewHashSet(fs.HashSHA1)
assert.Equal(t, h.String(), "[SHA-1]")
h = fs.NewHashSet()