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handle post policy only if it is set. (#6852)

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Previously policy in post form is assumed to be set always.  This is
fixed by doing the check when policy is set.
This commit is contained in:
Bala FA 2018-12-04 01:31:28 +05:30 committed by kannappanr
parent d6af3c1237
commit 18ced1102c
1 changed files with 23 additions and 20 deletions
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43
cmd/bucket-handlers.go
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@ -572,31 +572,34 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
return
}
postPolicyForm, err := parsePostPolicyForm(string(policyBytes))
if err != nil {
writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL, guessIsBrowserReq(r))
return
}
// Make sure formValues adhere to policy restrictions.
if apiErr = checkPostPolicy(formValues, postPolicyForm); apiErr != ErrNone {
writeErrorResponse(w, apiErr, r.URL, guessIsBrowserReq(r))
return
}
// Ensure that the object size is within expected range, also the file size
// should not exceed the maximum single Put size (5 GiB)
lengthRange := postPolicyForm.Conditions.ContentLengthRange
if lengthRange.Valid {
if fileSize < lengthRange.Min {
writeErrorResponse(w, toAPIErrorCode(ctx, errDataTooSmall), r.URL, guessIsBrowserReq(r))
// Handle policy if it is set.
if len(policyBytes) > 0 {
postPolicyForm, err := parsePostPolicyForm(string(policyBytes))
if err != nil {
writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL, guessIsBrowserReq(r))
return
}
if fileSize > lengthRange.Max || isMaxObjectSize(fileSize) {
writeErrorResponse(w, toAPIErrorCode(ctx, errDataTooLarge), r.URL, guessIsBrowserReq(r))
// Make sure formValues adhere to policy restrictions.
if apiErr = checkPostPolicy(formValues, postPolicyForm); apiErr != ErrNone {
writeErrorResponse(w, apiErr, r.URL, guessIsBrowserReq(r))
return
}
// Ensure that the object size is within expected range, also the file size
// should not exceed the maximum single Put size (5 GiB)
lengthRange := postPolicyForm.Conditions.ContentLengthRange
if lengthRange.Valid {
if fileSize < lengthRange.Min {
writeErrorResponse(w, toAPIErrorCode(ctx, errDataTooSmall), r.URL, guessIsBrowserReq(r))
return
}
if fileSize > lengthRange.Max || isMaxObjectSize(fileSize) {
writeErrorResponse(w, toAPIErrorCode(ctx, errDataTooLarge), r.URL, guessIsBrowserReq(r))
return
}
}
}
// Extract metadata to be saved from received Form.