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gerrit.openbmc.org / openbmc / bmcweb / ee192c065cc658b2489d04c791e2fb956a331699
commitee192c065cc658b2489d04c791e2fb956a331699[log] [tgz]
authorEd Tanous <ed@tanous.net>Wed Dec 13 10:49:58 2023 -0800
committerEd Tanous <ed@tanous.net>Mon Jan 22 19:15:20 2024 +0000
tree2c15d1c4b547fc3fcdfbb81ce056787817002e51
parent18f8f608b966c802b3e2a389e3c1ec5a1fd9407b [diff]
Make base64 encoder incremental

As part of https://gerrit.openbmc.org/c/openbmc/bmcweb/+/67667, it would
be desirable if we could incrementally encode base64 in chunks.  Given
that base64 encoding requires encoding 3 characters to 4, there's a
possibility that a chunk might not be mod 3 length.

This commit moves the base64 encoder into a class that can run
incrementally.

Tested:  Unit tests pass.  More tests in next commit.

Change-Id: Ic7da3fd4db865c99fcbd96ae06fdecb87628f94c
Signed-off-by: Ed Tanous <ed@tanous.net>
2 files changed
tree: 2c15d1c4b547fc3fcdfbb81ce056787817002e51
  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. .codespell-ignore
  14. .dockerignore
  15. .gitignore
  16. .markdownlint.yaml
  17. .openbmc-enforce-gitlint
  18. .prettierignore
  19. .shellcheck
  20. AGGREGATION.md
  21. CLIENTS.md
  22. COMMON_ERRORS.md
  23. DBUS_USAGE.md
  24. DEVELOPING.md
  25. HEADERS.md
  26. LICENSE
  27. meson.build
  28. meson_options.txt
  29. OEM_SCHEMAS.md
  30. OWNERS
  31. README.md
  32. Redfish.md
  33. run-ci
  34. setup.cfg
  35. 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 setup 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.