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4784217b57
Updating documentation of Fleetd tables as part of the oncall duty. Updating the json used by Fleet using the following command: ```sh cd website ./node_modules/sails/bin/sails.js run generate-merged-schema ``` Samples:   @mikermcneil @eashaw: `generate-merged-schema` generates a different output every time it's executed. Guess: It seems it should sort the output lexicograhically?
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
// sntp_request allows querying SNTP servers to get the timestamp
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// and clock offset from a NTP server (in millisecond precision).
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package sntp_request
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import (
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"context"
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"errors"
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"strconv"
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"time"
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"github.com/beevik/ntp"
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"github.com/osquery/osquery-go/plugin/table"
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)
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func Columns() []table.ColumnDefinition {
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return []table.ColumnDefinition{
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table.TextColumn("server"),
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table.BigIntColumn("timestamp_ms"),
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table.BigIntColumn("clock_offset_ms"),
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}
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}
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func GenerateFunc(_ context.Context, queryContext table.QueryContext) ([]map[string]string, error) {
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server := ""
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if constraints, ok := queryContext.Constraints["server"]; ok {
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for _, constraint := range constraints.Constraints {
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if constraint.Operator == table.OperatorEquals {
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server = constraint.Expression
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}
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}
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}
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if server == "" {
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return nil, errors.New("missing SNTP server column constraint; e.g. WHERE server = 'my.sntp.server'")
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}
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options := ntp.QueryOptions{
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Timeout: 30 * time.Second,
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}
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response, err := ntp.QueryWithOptions(server, options)
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if err != nil {
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return nil, err
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}
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return []map[string]string{{
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"server": server,
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"timestamp_ms": strconv.FormatInt(response.Time.UnixMilli(), 10),
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"clock_offset_ms": strconv.FormatInt(response.ClockOffset.Milliseconds(), 10),
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}}, nil
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}
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