Move Certificate install in resotre path to DEBUG

We are seeing 387+ `Certificate install` messages for a single boot in
the journal log.

Moved the `Certifacte install` log for the restore path to DEBUG instead
of INFO to remove it on the normal jorunal logs.

Tested:
```
systemctl status phosphor-certificate-manager@bmcweb.service
* phosphor-certificate-manager@bmcweb.service - Phosphor certificate manager for bmcweb
     Loaded: loaded (/lib/systemd/system/phosphor-certificate-manager@.service; static)
     Active: active (running) since Fri 2018-03-09 19:19:02 UTC; 24s ago
   Main PID: 25773 (phosphor-certif)
     CGroup: /system.slice/system-phosphor\x2dcertificate\x2dmanager.slice/phosphor-certificate-manager@bmcweb.service
             `-25773 /usr/bin/phosphor-certificate-manager --endpoint https --path /path/server.pem --type server --unit server_creds.target

Mar 09 19:19:02 [hostname] systemd[1]: Started Phosphor certificate manager for bmcweb.
Mar 09 19:19:03 [hostname] phosphor-certificate-manager[25773]: Error occurred during X509_verify_cert call, checking for known error
Mar 09 19:19:03 [hostname] phosphor-certificate-manager[25773]: Certificate compareKeys
Mar 09 19:19:03 [hostname] phosphor-certificate-manager[25773]: Certificate install
...
```

Change-Id: I907afd6ce4522e5c54348d16c1ace0a770f3b8f1
Signed-off-by: Willy Tu <wltu@google.com>
3 files changed
tree: de27766ab7388b73d89bc4566e3491e956c1bf8a
  1. bmc-vmi-ca/
  2. dist/
  3. subprojects/
  4. test/
  5. .clang-format
  6. .clang-tidy
  7. .gitignore
  8. .openbmc-enforce-gitlint
  9. argument.cpp
  10. argument.hpp
  11. certificate.cpp
  12. certificate.hpp
  13. certs_manager.cpp
  14. certs_manager.hpp
  15. config.h.in
  16. csr.cpp
  17. csr.hpp
  18. LICENSE
  19. mainapp.cpp
  20. meson.build
  21. meson_options.txt
  22. OWNERS
  23. README.md
  24. watch.cpp
  25. watch.hpp
  26. x509_utils.cpp
  27. x509_utils.hpp
README.md

phosphor-certificate-manager

Certificate management allows to replace the existing certificate and private key file with another (possibly CA signed) Certificate key file. Certificate management allows the user to install both the server and client certificates.

To Build

This project can be built with meson. The typical meson workflow is: meson builddir && ninja -C builddir.

To Run

Multiple instances of phosphor-certificate-manager are usually run on the bmc to support management of different types of certificates.

Usage: ./phosphor-certificate-manager [options]
Options:
    --help            Print this menu
    --type            certificate type
                      Valid types: client,server,authority
    --endpoint        d-bus endpoint
    --path            certificate file path
    --unit=<name>     Optional systemd unit need to reload

Https certificate management

Purpose: Server https certificate

./phosphor-certificate-manager --type=server --endpoint=https \
    --path=/etc/ssl/certs/https/server.pem --unit=bmcweb.service

CA certificate management

Purpose: Client certificate validation

./phosphor-certificate-manager --type=authority --endpoint=ldap \
    --path=/etc/ssl/certs/authority --unit=bmcweb.service

LDAP client certificate management

Purpose: LDAP client certificate validation

./phosphor-certificate-manager --type=client --endpoint=ldap \
    --path=/etc/nslcd/certs/cert.pem

D-Bus Interface

phosphor-certificate-manager is an implementation of the D-Bus interface defined in this document.

D-Bus service name is constructed by "xyz.openbmc_project.Certs.Manager.{Type}.{Endpoint}" and D-Bus object path is constructed by "/xyz/openbmc_project/certs/{type}/{endpoint}".

Take https certificate management as an example.

./phosphor-certificate-manager --type=server --endpoint=https \
    --path=/etc/ssl/certs/https/server.pem --unit=bmcweb.service

D-Bus service name is "xyz.openbmc_project.Certs.Manager.Server.Https" and D-Bus object path is "/xyz/openbmc_project/certs/server/https".

Usage in openbmc/bmcweb

OpenBMC bmcweb exposes various REST APIs for certificate management on the BMC, which leverages functionalities of phosphor-certificate-manager via D-Bus.