Better error message for missing intermediates #182
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worldwise001
approved these changes
Apr 6, 2019
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| if len(intermediates.Subjects()) == 0 { | ||
| // No intermediates found, maybe broken chain. Let's try AIA fetching? | ||
| intermediate := fetchAIA(certs[0]) |
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We're only trying the first one in the chain? I guess it's pretty rare to have more than 3 certs in a chain.
mcpherrinm
reviewed
Apr 17, 2019
| for _, url := range cert.IssuingCertificateURL { | ||
| resp, err := http.Get(url) | ||
| if err != nil { | ||
| continue |
mcpherrinm
reviewed
Apr 17, 2019
| @@ -109,6 +111,30 @@ func caBundle(caPath string) *x509.CertPool { | |||
| return bundle | |||
| } | |||
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| func fetchAIA(cert *x509.Certificate) *x509.Certificate { | |||
| for _, url := range cert.IssuingCertificateURL { | |||
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rfc4325 says we should look at the file extension to see if it's .cer or .p7c. We could return if it's .p7c and only support .cer fetching
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should this be merged @mcpherrinm or does it need more work? |
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I think we should do the p7c/cer and recursive AIA fetching stuff in comments |
mcpherrinm
suggested changes
May 1, 2020
csstaub
requested review from
a team,
mweissbacher,
isemaya-square and
mmontgomery-square
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If verification fails, retries using intermediate retrieved via AIA fetching and updates error message to make it clearer what the misconfiguration is.
Used to print:
But now shows:
This is best-effort.