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gerrit.openbmc.org / openbmc / bmcweb / cd17b26c893ba9dd1dcb0d56d725f2892c57e125
commitcd17b26c893ba9dd1dcb0d56d725f2892c57e125[log] [tgz]
authorRichard Marian Thomaiyar <richard.marian.thomaiyar@linux.intel.com>Tue Jan 28 15:07:35 2020 +0530
committerRichard Marian Thomaiyar <richard.marian.thomaiyar@linux.intel.com>Fri Feb 07 09:58:13 2020 +0000
treecb2195bc46f08493b6e4c30b3edcece0f7b3add4
parent3f8a743a5179eb618518ff04b98202a997342bb0 [diff]
[pam]: Restrict user authentication to redfish grp

Restrict bmcweb authentication to redfish group only. This
change makes sure that user without having redfish group user
is not authenticated to query the details, and login will fail.

Tested:
1.Verified by removing the redfish group role for a valid user
and confirmed redfish session establishment fails using postman.

Change-Id: Ie0c1c94a7ac4d218a502faba1d80c7b9fc2a7ca0
Signed-off-by: Richard Marian Thomaiyar <richard.marian.thomaiyar@linux.intel.com>
1 file changed
tree: cb2195bc46f08493b6e4c30b3edcece0f7b3add4
  1. cmake/
  2. http/
  3. include/
  4. redfish-core/
  5. scripts/
  6. src/
  7. static/
  8. .clang-format
  9. .gitignore
  10. bmcweb.service.in
  11. bmcweb.socket
  12. build_x86.sh
  13. cmake-format.json
  14. CMakeLists.txt
  15. CMakeLists.txt.in
  16. config.h.in
  17. DEVELOPING.md
  18. JenkinsFile
  19. LICENCE
  20. MAINTAINERS
  21. pam-webserver
  22. README.md
  23. Redfish.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/CMakeLists.txt and then compiling. For example, cmake -DBMCWEB_ENABLE_KVM=NO ... followed by make. The option names become C++ preprocessor symbols that control which code is compiled into the program.

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 prime256v1 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.