bigfix-remote-session-relevance

Evaluate BigFix session relevance through the root server REST API, BigFix Explorer, the Web Reports SOAP API, or BigFix SaaS, against every configured deployment at once, and get the same result back whichever one answered.

uvx bigfix-remote-session-relevance "number of bes computers"

The session-relevance counterpart to bigfix-remote-client-relevance.

What it does

• One result type. REST (JSON), Explorer (JSON) and Web Reports (SOAP XML) all return a SessionRelevanceResult with native answers (int, bool, str, tuples), the type string, plurality and evaluation time. Callers never see the wire format; result.raw has it when asked for.
• Consistent errors. Relevance errors, bad credentials, unreachable hosts and login pages come back as results with error.kind set. The kind and message are the same on every backend.
• Many servers. Any number of root servers, Explorers and Web Reports servers. Connections to the same deployment are recognized automatically (sha256 of gather url of bes license), and by default each deployment is queried once, concurrently, with failover between its connections.
• Trust on first use for self-signed BigFix certificates: confirm a certificate once and it is pinned. A changed certificate is a hard error.
• Auth: Basic or bearer token (11.0.6+ "API key") for REST and Explorer, mTLS client certificates for Explorer, username/password for Web Reports. BigFix SaaS signs in with email/password (TOTP prompted when required).
• Explorer extras (keys, filters) are additive and opt in.
• Async first, with an equally capable sync API. Pure-Python dependencies only.

Setup

uvx bigfix-remote-session-relevance --setup

The wizard asks for a host, username and password, probes the REST API (52311), Explorer (9383) and Web Reports (443/8083/80/8080), pins certificates after showing their fingerprints, and writes ~/.bigfix/.remote_session_connections.toml (mode 0600). A host entered with a port (bes-root.local:52311) is probed only on that port: every backend over https, plus Web Reports over http. One entered as https:// is probed only over https (Web Reports still on 443 and 8083), and http:// probes only Web Reports.

When the REST API answers, setup also asks the root server for the Explorer and Web Reports servers registered with it (/api/explorers, /api/webreports), so ones on other machines can be found. It shows the ones it has not already tried and asks before sending your username and password to them (default no). Those reached over http:// are marked cleartext. If you agree, they are probed with the same certificate prompts, marked "listed by the root server", and offered for saving like the rest. The root server answers these lists only for a master operator. For anyone else, setup says so on the REST line and carries on. The lists name a server as the root server knows it, which can be a short machine name that does not resolve from where you run setup (it then shows as unreachable), or the root server's own Explorer under a second name. Setup that probes only Explorer or Web Reports (run_setup(backends=...) without rest) never reads the lists.

For BigFix SaaS, enter login.bigfix.com (or eulogin.bigfix.com) as the host, then your email and password; a TOTP code is asked for only if your account uses MFA. Setup signs in once and saves one connection per BigFix server your account can reach. A rejected sign-in is never retried or saved: BigFix SaaS locks an account after 100 failed logins. See remote_session_connections.example.toml for every option. server is normally just a host name: https:// and the backend's default port are assumed.

Passwords can live in the file, or better, in environment variables named by password_env.

On a BigFix root server, no setup is needed. Run as root (Linux) or Administrator (Windows) and the server's own REST API credentials are used automatically, as an extra rest connection named local-root-server, the same way besapi logs in first with them. Linux reads /var/opt/BESServer/Applications/MasterOperatorCredentials and decrypts the password with the CryptoUtility next to it; Windows reads HKLM\SOFTWARE\Wow6432Node\BigFix\Enterprise Server\MFSConfig and decrypts it with DPAPI. Nothing is written to the config file, and the password never appears in output or logs (--show-config says local root server). As a normal user on a root server, or when the password cannot be decrypted, the connection is left out when anything else is configured. To turn it off, set BFRSR_LOCAL_ROOT_SERVER=0 or local_root_server = false under [defaults].

CLI

bigfix-remote-session-relevance "names of bes sites"            # one answer per line
bigfix-remote-session-relevance --json "ids of bes computers"   # list of result objects
bigfix-remote-session-relevance --all "now"                     # every connection, not one per deployment (= -all, --all-connections)
bigfix-remote-session-relevance --backend webreports --raw "1"  # raw server response
bigfix-remote-session-relevance --keep-escapes '"a%09b"'        # a%09b: % and control characters as %xx
bigfix-remote-session-relevance --keys "id name" \
    "(id of it, name of it) of bes computers"                  # Explorer extras
echo "number of bes fixlets" | bigfix-remote-session-relevance -
bigfix-remote-session-relevance --show-config                   # connections, no secrets
bigfix-remote-session-relevance --show-certs | --trust-cert NAME | --forget-cert HOST:PORT

Answers go to stdout; errors and -v metadata go to stderr.

Answer text comes from the server, so plain-text output to a terminal shows control characters as %xx: ESC, CR, LF, the other C0 controls except tab, DEL and the C1 controls (0x80–0x9F). An answer can't recolour or clear your terminal, and an answer containing a newline stays on one line (x%0ay). % itself is left as is, so %SystemRoot% stays readable; use --keep-escapes for the unambiguous form, where % is %25. Error messages on a terminal keep their line breaks but lose the other control characters.

Output to a pipe or file is the answer text as is, one answer per line, so an answer containing a newline prints as several lines. Use --json when the answer boundaries matter, or --keep-escapes. --json and --raw are never changed, terminal or not. A pipe into something that writes to the terminal (| less -R, | tee /dev/tty) is not escaped either.

Text the output encoding can't hold, such as a lone surrogate (\ud800 in a JSON answer), is written as \ud800 instead of stopping the run.

Results stream in as each deployment answers (completion order), so a slow or unreachable server no longer holds up the ones that already finished. Plain text and --raw stream; --json is one document, so it prints once everything is in. Exit codes are always decided after the full fan-out.

When several results come back, plain text ends with a summary that collapses identical answers, most common first:

== summary: 3 results, 2 distinct answers
2× 1234
    prod-root (rest), dr-root (rest)
1× 87
    lab-wr (webreports)

Results are grouped by answers, answer type and error (not timing, backend or server), and identical errors collapse too. The summary only appears when it actually collapses something.

Library

from bigfix_remote_session_relevance import evaluate_session_relevance

for result in evaluate_session_relevance("(id of it, name of it) of bes computers"):
    if result.ok:
        print(result.connection, result.answers)  # ((1, 'host-a'), ...)
    else:
        print(result.connection, result.error.kind, result.error.message)

from bigfix_remote_session_relevance import AsyncSessionRelevanceClient

async with AsyncSessionRelevanceClient() as client:  # default config
    results = await client.evaluate("number of bes computers")
    results.raise_for_error()  # opt into exceptions

    async for result in client.evaluate_stream("number of bes computers"):
        print(result.connection, result.answers)  # as each deployment answers
    keyed = await client.evaluate_explorer(
        "(id of it, name of it) of bes computers", keys="id name"
    )

integer and boolean answers are int and bool; every other type (floating point, date, version, time interval, …) is text, the same on REST, Explorer and Web Reports (a time from Web Reports is converted from ISO 8601 to the BigFix form the others send). BigFix SaaS is the one exception for numbers: its gateway re-encodes them as JavaScript numbers, so a floating point can read 3 instead of 3.0 and integers above 2**53 lose precision (ask for as string when the exact value matters).

String answers are the decoded text on every backend ("a%09b" gives a<TAB>b). Pass unescape=False to any evaluate* method or to evaluate_session_relevance() / async_evaluate_session_relevance() (CLI: --keep-escapes) to get % and control characters as %xx instead (a%09b), the form Web Reports and qna print, again the same on every backend. escape_answer() / unescape_answer() convert between the two; escape_result() does it for a whole result from a backend used directly.

SessionRelevanceClient has the same methods, synchronously, and works even inside a running event loop. Single backends (RestBackend, ExplorerBackend, WebReportsBackend, SaasBackend) can be used directly too.

The query is always named session_relevance (never a bare relevance, which could mean client relevance): result.session_relevance, the to_dict() / --json key, the error kind, and the session_relevance= / session_relevances= parameters.

BigFix Query (ClientQuery, provisional)

RestBackend can also send client relevance to agents through the root server's BigFix Query API, for tools such as bigfix-remote-client-relevance that want this package's config, credentials and certificate pinning. It is opt-in and separate: evaluate() is unchanged. Two calls, and polling is up to the caller, since rows accumulate as agents answer:

import asyncio

from bigfix_remote_session_relevance import (
    RestBackend, TrustStore, load_config, supports_client_query,
)

conn = next(c for c in load_config().connections if c.backend == "rest")
async with RestBackend.from_config(conn, trust=TrustStore()) as backend:
    assert supports_client_query(backend)  # only RestBackend, for now
    submitted = await backend.submit_client_query("computer name", [<COMPUTER_ID>])
    if submitted.ok and submitted.query_id is not None:
        results = await backend.client_query_results(submitted.query_id)
        for _ in range(30):  # about a minute
            if results.rows or not results.ok:
                break
            await asyncio.sleep(2)
            results = await backend.client_query_results(submitted.query_id)
        for row in results.rows:  # one row per value, per computer
            print(row.computer_id, row.computer_name, row.is_failure, row.result)

Errors are results here too (response.error is a ResultError); only caller bugs raise (no computer ids, or ids that are not integers). Operators who are not master operators need the Can Submit Queries permission. Computers outside the operator's scope are accepted without an error but never answer, so stop polling on your own timeout.

Setup from another tool (provisional)

run_setup(path=None, *, backends=None) is the interactive --setup wizard as a function returning its exit code. path=None is the usual config path; backends=("rest",) probes, and offers to save, only those backends.

Upgrading from 0.4 or earlier: 0.5.0 renamed, with no alias, result.relevance → result.session_relevance (and the --json key), the relevance= / relevances= parameters → session_relevance= / session_relevances=, error kind "relevance" → "session_relevance", and RelevanceError → SessionRelevanceEvaluationError. Helpers follow suit (encode_session_relevance, parse_session_relevance_response, …).

Compatibility

From 1.0.0, releases follow semantic versioning. Removing or changing any of these needs a new major version:

• Library: the names in bigfix_remote_session_relevance.__all__ and the parameters in their signatures, keyword names included, except the provisional names below. transport / transport_factory are testing hooks typed with httpx's classes and are not covered.
• Results: the SessionRelevanceResult and ResultError fields, the to_dict() keys and value types, the error kinds (ERROR_KINDS) and the exception class raise_for_error() raises for each.
• CLI: flags, the exit codes in the table above, and the --json output (to_dict() per result).
• Config file: schema_version = 1 and the keys and backend names in remote_session_connections.example.toml, where the file is looked for (--config, $BFRSR_CONFIG, ~/.bigfix/.remote_session_connections.toml) and BFRSR_LOCAL_ROOT_SERVER. The lenient aliases (url, host, user, type, wr, …) keep working, but may be deprecated, with a warning for at least one minor release first.

Provisional: Backend, RestBackend, ExplorerBackend, WebReportsBackend, SaasBackend, TrustStore, KnownCerts and CertInfo, and (since 1.1.0) the BigFix Query names ClientQueryExtras, ClientQueryResponse, ClientQueryRow, supports_client_query and run_setup, are public and usable, but may change in a minor release (noted in its release notes). Use the clients for a stable interface.

Additions (a new result field or to_dict() key, error kind or code, flag or config key) come in minor releases. Code that switches on error kinds or codes should allow ones it doesn't know. ResultError itself accepts only the kinds of the installed version, so check kind before rebuilding one from a newer version's --json. Older versions warn about, and ignore, config keys they don't know.

Not covered: the plain-text CLI layout and summary, stderr and log messages, error message wording, detail and raw (the server's own text), the certificate pin and cache files under ~/.bigfix, and anything not in __all__ (types such as Pin or ServerAddress that provisional classes return or take are provisional with them).

Development

uv sync
uv run pytest                                  # offline; live tests skip
BFRSR_LIVE_TESTS=1 uv run pytest tests/integration -n0   # against your config
uv run python scripts/capture_fixtures.py      # refresh redacted fixtures

See DESIGN.md for the specification and AGENTS.md for contributor notes.