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packfile: Avoid panics patching corrupted deltas. #492
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mcuadros
suggested changes
Jul 19, 2017
| @@ -40,15 +45,18 @@ func ApplyDelta(target, base plumbing.EncodedObject, delta []byte) error { | |||
| return nil | |||
| } | |||
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| var ErrDeltaLen = errors.New("wrong delta length") | |||
There was a problem hiding this comment.
can you group the errors?
| @@ -40,15 +45,18 @@ func ApplyDelta(target, base plumbing.EncodedObject, delta []byte) error { | |||
| return nil | |||
| } | |||
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| var ErrDeltaLen = errors.New("wrong delta length") | |||
| var ErrDeltaCmd = errors.New("wrong delta command") | |||
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| // PatchDelta returns the result of applying the modification deltas in delta to src. | |||
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Can you explain why an error can be returned?
smola
reviewed
Jul 19, 2017
| @@ -59,6 +67,12 @@ func PatchDelta(src, delta []byte) []byte { | |||
| for { | |||
| cmd = delta[0] | |||
| delta = delta[1:] | |||
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| if len(delta) < 2 { | |||
| // wrong delta | |||
There was a problem hiding this comment.
No need for the comment? It's returning an error explaining that the delta is not valid, so there is no need to comment that.
| @@ -76,17 +90,23 @@ func PatchDelta(src, delta []byte) []byte { | |||
| } | |||
| dest = append(dest, delta[0:sz]...) | |||
| remainingTargetSz -= sz | |||
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| if len(delta) < int(sz) { | |||
| // wrong delta | |||
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