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gerrit.openbmc.org / openbmc / bmcweb / 7e9093e625961f533250a6c193c1a474e98007c4
commit7e9093e625961f533250a6c193c1a474e98007c4[log] [tgz]
authorP Dheeraj Srujan Kumar <p.dheeraj.srujan.kumar@intel.com>Sat Sep 18 01:19:04 2021 +0530
committerEd Tanous <ed@tanous.net>Tue Mar 14 21:23:02 2023 +0000
treedef70a389a02ff981fd81958652f45204e1e5be1
parent4f10f7e3f7c8b3d67803f691d3a0b394b9bccfc1 [diff]
Add Support for privilege check in handleUpgrade

This commit enables privilege check for user(s) in case of upgraded
connections.
Currently users with no privileges will also be able to access
Websockets connections (Ex: KVM).

The privilege check was already in place for normal connections (i.e.
router->handle()). This commit lifts off the privilege check code and
moves it into a common function (validatePrivilege()), which can be used
both by handle() and handleUpgrade() and register required callback to
be called.

Also, the const qualifier for Request in the handleUpgrade() function's
signature is removed to enable setting "isConfigureSelf" field of
request. The signature of handleUpgrade() is made identical to handle()

Tested:
 - websocket_test.py Passed
 - Admin and Operator users are able to access KVM on WebUI
 - Readonly User was unable to access KVM on WebUI

Signed-off-by: P Dheeraj Srujan Kumar <p.dheeraj.srujan.kumar@intel.com>
Change-Id: I6f743c27e7e6077f1c6c56e6958922027e4404e8
2 files changed
tree: def70a389a02ff981fd81958652f45204e1e5be1
  1. .github/
  2. config/
  3. http/
  4. include/
  5. redfish-core/
  6. scripts/
  7. src/
  8. static/
  9. subprojects/
  10. test/
  11. .clang-format
  12. .clang-tidy
  13. .dockerignore
  14. .gitignore
  15. .markdownlint.yaml
  16. .openbmc-enforce-gitlint
  17. .prettierignore
  18. .shellcheck
  19. AGGREGATION.md
  20. CLIENTS.md
  21. COMMON_ERRORS.md
  22. DBUS_USAGE.md
  23. DEVELOPING.md
  24. HEADERS.md
  25. LICENSE
  26. meson.build
  27. meson_options.txt
  28. OEM_SCHEMAS.md
  29. OWNERS
  30. README.md
  31. Redfish.md
  32. run-ci
  33. setup.cfg
  34. TESTING.md
README.md

OpenBMC webserver

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

Features

The webserver implements a few distinct interfaces:

  • DBus event websocket. Allows registering on changes to specific dbus paths, properties, and will send an event from the websocket if those filters match.
  • OpenBMC DBus REST api. Allows direct, low interference, high fidelity access to dbus and the objects it represents.
  • Serial: A serial websocket for interacting with the host serial console through websockets.
  • Redfish: A protocol compliant, DBus to Redfish translator.
  • KVM: A websocket based implementation of the RFB (VNC) frame buffer protocol intended to mate to webui-vue to provide a complete KVM implementation.

Protocols

bmcweb at a protocol level supports http and https. TLS is supported through OpenSSL.

AuthX

Authentication

Bmcweb supports multiple authentication protocols:

  • Basic authentication per RFC7617
  • Cookie based authentication for authenticating against webui-vue
  • Mutual TLS authentication based on OpenSSL
  • Session authentication through webui-vue
  • XToken based authentication conformant to Redfish DSP0266

Each of these types of authentication is able to be enabled or disabled both via runtime policy changes (through the relevant Redfish APIs) or via configure time options. All authentication mechanisms supporting username/password are routed to libpam, to allow for customization in authentication implementations.

Authorization

All authorization in bmcweb is determined at routing time, and per route, and conform to the Redfish PrivilegeRegistry.

*Note: Non-Redfish functions are mapped to the closest equivalent Redfish privilege level.

Configuration

bmcweb is configured per the meson build files. Available options are documented in meson_options.txt

Compile bmcweb with default options

meson builddir
ninja -C builddir

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

Use of persistent data

bmcweb relies on some on-system data for storage of persistent data that is internal to the process. Details on the exact data stored and when it is read/written can seen from the persistent_data namespace.

TLS certificate generation

When SSL support is enabled and a usable certificate is not found, bmcweb will generate a self-signed a certificate before launching the server. Please see the bmcweb source code for details on the parameters this certificate is built with.

Redfish Aggregation

bmcweb is capable of aggregating resources from satellite BMCs. Refer to AGGREGATION.md for more information on how to enable and use this feature.