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Fix CA certificate bundle handling in darwinssl. #115

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merged 2 commits into from Sep 1, 2014

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ldx
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@ldx ldx commented Aug 30, 2014

If the --cacert option is used with a CA certificate bundle that
contains multiple CA certificates, iterate through it, adding each
certificate as a trusted root CA.

If the --cacert option is used with a CA certificate bundle that
contains multiple CA certificates, iterate through it, adding each
certificate as a trusted root CA.
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ldx commented Aug 30, 2014

Ping @nickzman

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I'm still experiencing a problem where it will treat files that are not DER certificates as if they were DER certificates. For example, if I set --cacert to the Safari binary that comes with OS X, it treats it like it was a certificate file when it isn't. Why does pem_to_der() return 0 if the separator line is not found?

SecCertificateCreateWithData() returns a non-NULL SecCertificateRef even
if the buffer holds an invalid or corrupt certificate. Call
SecCertificateCopyPublicKey() to make sure cacert is a valid
certificate.
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ldx commented Aug 31, 2014

The problem is that SecCertificateCreateWithData() returns a non-NULL SecCertificateRef even if the buffer is non-valid DER or corrupt.

I pushed a commit which adds an extra check via calling SecCertificateCopyPublicKey() to make sure cacert is a valid certificate. It fixes the issue you mention.

Pem_to_der() returns the number of bytes it consumed from the input buffer, so that it can be used to traverse through a bundle. If it can't find a separator it assumes the certificate is not a PEM file.

nickzman added a commit that referenced this pull request Sep 1, 2014
darwinssl: now accepts cacert bundles in PEM format in addition to single certs
@nickzman nickzman merged commit 0c14b31 into curl:master Sep 1, 2014
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nickzman commented Sep 1, 2014

Sorry about before. I was trying to copy & paste the change into the source file, and for some reason, it kept copying the old source without the change that fixed the problem above. Thanks for your work on this!

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