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gerrit.openbmc.org / openbmc / bmcweb / 7b1dd2f90b04942289cc51031b4e9228da201365
commit7b1dd2f90b04942289cc51031b4e9228da201365[log] [tgz]
authorEd Tanous <edtanous@google.com>Wed Jun 22 16:20:00 2022 -0700
committerEd Tanous <ed@tanous.net>Thu Jul 07 23:50:21 2022 +0000
tree18566623da4ff47c7ef12bb73d2b91fbf64cc73c
parentb9e1522807ac9411a03f0d37b07ac35f4cebbe3c [diff]
Set UnknownProperty message to be an error

This normally wouldn't be so big of a deal, but the redfish-protocol
validator tests this case in the REQ_PATCH_BAD_PROP test.

From the specification:
'''
If all properties in the update request are read-only, unknown, or
unsupported, but the resource can be updated, the service shall return
the HTTP 400 Bad Request status code and an error response with messages
that show the non-updatable properties.
'''

We wrote our code almost right for handling this case, but we put the
response into the per-property responses instead of the error responses.

In terms of backward compatibility, technically this is changing the
behavior, but considering that it's behavior in an error case, most
implementations only look at response code, and this is moving to be
compliant with the specification, it doesn't seem like there would be
any reason to provide both the old message and the new one, and this has
a low to zero likelihood of any actual impact.  To hit this condition,
clients would have to be ignoring the error code response AND using a
property that's unknown to the BMC.  Clients that make both mistakes
seems unlikely.

Tested:
Code now passes the REQ_PATCH_BAD_PROP test.  10 failing test cases down
to 8.

'''
curl -vvvv --insecure --user root:0penBmc https://192.168.7.2/redfish/v1/AccountService/ -X PATCH -d '{"foo": "bar"}'
'''

Returns an object with an "error" key in it.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I8a19ed2bcfc91765b63d4544877332038e171c02
1 file changed
tree: 18566623da4ff47c7ef12bb73d2b91fbf64cc73c
  1. .github/
  2. http/
  3. include/
  4. redfish-core/
  5. scripts/
  6. src/
  7. static/
  8. subprojects/
  9. .clang-format
  10. .clang-ignore
  11. .clang-tidy
  12. .dockerignore
  13. .gitignore
  14. .shellcheck
  15. bmcweb.service.in
  16. bmcweb.socket.in
  17. bmcweb_config.h.in
  18. build_x86.sh
  19. build_x86_docker.sh
  20. CLIENTS.md
  21. COMMON_ERRORS.md
  22. DEVELOPING.md
  23. Dockerfile
  24. Dockerfile.base
  25. HEADERS.md
  26. LICENSE
  27. meson.build
  28. meson_options.txt
  29. OEM_SCHEMAS.md
  30. OWNERS
  31. pam-webserver
  32. README.md
  33. Redfish.md
  34. run-ci
  35. setup.cfg
  36. TESTING.md
README.md

OpenBMC webserver

This component attempts to be a "do everything" embedded webserver for openbmc.

Capabilities

At this time, the webserver implements a few interfaces:

  • Authentication middleware that supports cookie and token based authentication, as well as CSRF prevention backed by linux PAM authentication credentials.
  • An (incomplete) attempt at replicating phosphor-dbus-rest interfaces in C++. Right now, a few of the endpoint definitions work as expected, but there is still a lot of work to be done. The portions of the interface that are functional are designed to work correctly for phosphor-webui, but may not yet be complete.
  • Replication of the rest-dbus backend interfaces to allow bmc debug to logged in users.
  • An initial attempt at a read-only redfish interface. Currently the redfish interface targets ServiceRoot, SessionService, AccountService, Roles, and ManagersService. Some functionality here has been shimmed to make development possible. For example, there exists only a single user role.
  • SSL key generation at runtime. See the configuration section for details.
  • Static file hosting. Currently, static files are hosted from the fixed location at /usr/share/www. This is intended to allow loose coupling with yocto projects, and allow overriding static files at build time.
  • Dbus-monitor over websocket. A generic endpoint that allows UIs to open a websocket and register for notification of events to avoid polling in single page applications. (this interface may be modified in the future due to security concerns.

Configuration

BMCWeb is configured by setting -D flags that correspond to options in bmcweb/meson_options.txt and then compiling. For example, meson <builddir> -Dkvm=disabled ... followed by ninja in build directory. The option names become C++ preprocessor symbols that control which code is compiled into the program.

Compile bmcweb with default options:

meson builddir
ninja -C builddir

Compile bmcweb with yocto defaults:

meson builddir -Dbuildtype=minsize -Db_lto=true -Dtests=disabled
ninja -C buildir

If any of the dependencies are not found on the host system during configuration, meson automatically gets them via its wrap dependencies mentioned in bmcweb/subprojects.

Enable/Disable meson wrap feature

meson builddir -Dwrap_mode=nofallback
ninja -C builddir

Enable debug traces

meson builddir -Dbuildtype=debug
ninja -C builddir

Generate test coverage report:

meson builddir -Db_coverage=true -Dtests=enabled
ninja -C builddir test
ninja -C builddir coverage

When BMCWeb starts running, it reads persistent configuration data (such as UUID and session data) from a local file. If this is not usable, it generates a new configuration.

When BMCWeb SSL support is enabled and a usable certificate is not found, it will generate a self-sign a certificate before launching the server. The keys are generated by the secp384r1 algorithm. The certificate

  • is issued by C=US, O=OpenBMC, CN=testhost,
  • is valid for 10 years,
  • has a random serial number, and
  • is signed using the SHA-256 algorithm.