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Expand the concept of the X.509 cache to provide the functionality of
a certificate store. Certificates in the store will be automatically
used to complete certificate chains where applicable.
The certificate store may be prepopulated at build time using the
CERT=... build command line option. For example:
make bin/ipxe.usb CERT=mycert1.crt,mycert2.crt
Certificates within the certificate store are not implicitly trusted;
the trust list is specified using TRUST=... as before. For example:
make bin/ipxe.usb CERT=root.crt TRUST=root.crt
This can be used to embed the full trusted root certificate within the
iPXE binary, which is potentially useful in an HTTPS-only environment
in which there is no HTTP server from which to automatically download
cross-signed certificates or other certificate chain fragments.
This usage of CERT= extends the existing use of CERT= to specify the
client certificate. The client certificate is now identified
automatically by checking for a match against the private key. For
example:
make bin/ipxe.usb CERT=root.crt,client.crt TRUST=root.crt KEY=client.key
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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The fetch_setting() family of functions may currently modify the
definition of the specified setting (e.g. to add missing type
information). Clean up this interface by requiring callers to provide
an explicit buffer to contain the completed definition of the fetched
setting, if required.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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fetch_settings_copy() currently returns success and a NULL data
pointer to indicate a non-existent setting. This is intended to allow
the caller to differentiate between a non-existent setting and an
error in allocating memory for the copy of the setting.
The underlying settings blocks' fetch() methods provide no way to
perform an existence check separate from an attempt to fetch the
setting. A "non-existent setting" therefore means simply a setting
for which an error was encountered when attempting to fetch from every
settings block within the subtree.
Since any underlying error within a settings block (e.g. a GuestRPC
failure when attempting to retrieve a VMware GuestInfo setting) will
produce the effect of a "non-existent setting", it seems somewhat
meaningless to give special treatment to memory allocation errors
within fetch_setting_copy().
Remove the special treatment and simplify the semantics of
fetch_setting_copy() by directly passing through any underlying error
(including non-existence) encountered while fetching the setting.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Suggested-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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The setting name "key" conflicts with the setting name "key" already
in use by the 802.11 code. Resolve the conflict by renaming the newer
setting to "privkey".
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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If a root certificate has been explicitly specified at build time
using TRUST=/path/to/cert then do not allow this to be overridden even
from a trustworthy settings source (such as VMware GuestInfo).
Similarly, if a client certificate (and private key) has been
explicitly specified at build time, then do not allow it to be
overridden at runtime.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Allow a client certificate and corresponding private key to be
specified at build time using the syntax
make CERT=/path/to/certificate KEY=/path/to/key
The build process uses openssl to convert the files into DER format,
and includes them within the client certificate store in
clientcert.c. The build process will prompt for the private key
password if applicable.
Note that the private key is stored unencrypted, and so the resulting
iPXE binary (and the temporary files created during the build process)
should be treated as being equivalent to an unencrypted private key
file.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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