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gerrit.openbmc.org / openbmc / bmcweb / ca1600c10f43648ce90f84a2a712c6ebd043dded
commitca1600c10f43648ce90f84a2a712c6ebd043dded[log] [tgz]
authorSzymon Dompke <szymon.dompke@intel.com>Thu Mar 03 14:42:52 2022 +0100
committerEd Tanous <ed@tanous.net>Wed Apr 13 19:33:47 2022 +0000
tree08e4e6e67d56ff005b51e0b29b2b336a27abe257
parent0145a22519adb4f7e6b79ba0f5446359713ea474 [diff]
Add common url segments parser

This change is adding helper template function, which can be used both
to validate and read segments from segments_view returned by boost_url
parser. Number of segments is also validated - in case when argument
count differs from them, false will be returned. In case when we want to
validate only existence of a segment, special argument can be passed in
its place: 'anySegment'.

Reasoning why url_view  was chosen instead of strings:
- This way code generation is kept minimal.
- There are multiple parse functions in boost_url with different rules,
  but all of them return url_view. This solution should accommodate
  every use case.

Testing done:
- Unit tests are added, passing.
- Refactored part of telemetry to use this new approach, no regression
  spotted during simple POST/GET tests.

Change-Id: I677a34e1ee570d33f2322a80dc1629f88273e0d5
Signed-off-by: Szymon Dompke <szymon.dompke@intel.com>
4 files changed
tree: 08e4e6e67d56ff005b51e0b29b2b336a27abe257
  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. COMMON_ERRORS.md
  21. DEVELOPING.md
  22. Dockerfile
  23. Dockerfile.base
  24. LICENSE
  25. MAINTAINERS
  26. meson.build
  27. meson_options.txt
  28. OEM_SCHEMAS.md
  29. OWNERS
  30. pam-webserver
  31. README.md
  32. Redfish.md
  33. run-ci
  34. setup.cfg
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.