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gerrit.openbmc.org / openbmc / bmcweb / 003301a24bad4cfe066bb1f5720243a3f7c45742
commit003301a24bad4cfe066bb1f5720243a3f7c45742[log] [tgz]
authorEd Tanous <ed@tanous.net>Tue Apr 16 09:59:19 2024 -0700
committerEd Tanous <ed@tanous.net>Fri Apr 19 14:28:46 2024 -0700
treeee868aef8718083210bb800355e80417b9f91fbe
parent5b90429a75c58797ec29ac9a8ed18c2dcd7d4950 [diff]
Change ssl stream implementations

Boost beast ssl_stream is just a wrapper around asio ssl_stream, and
aims to optimize the case where we're writing small payloads (one or two
bytes.) which needs to be optimized in SSL.

bmcweb never writes one or two bytes, we almost always write the full
payload of what we received, so there's no reason to take the binary
size overhead, and additional boost headers that this implementation
requires.

Tested:
This drops the on-target binary size by 2.6%

Redfish service validator passes.

Change-Id: Ie1ae6f197f8e5ed70cf4abc6be9b1b382c42d64d
Signed-off-by: Ed Tanous <ed@tanous.net>
8 files changed
tree: ee868aef8718083210bb800355e80417b9f91fbe
  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. REDFISH_CHECKLIST.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.

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.