compliance

package
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 Go to latest Published: Nov 27, 2024 License: Apache-2.0 Imports: 74 Imported by: 0

Documentation

Overview

Package compliance implements a specific part of the datadog-agent responsible for scanning host and containers and report various misconfigurations and compliance issues.

Index

Constants

View Source 
const (
	//revive:disable
	XCCDF_RESULT_PASS = iota + 1
	XCCDF_RESULT_FAIL
	XCCDF_RESULT_ERROR
	XCCDF_RESULT_UNKNOWN
	XCCDF_RESULT_NOT_APPLICABLE
	XCCDF_RESULT_NOT_CHECKED
	XCCDF_RESULT_NOT_SELECTED
)

Variables

View Source 
var ErrIncompatibleEnvironment = errors.New("environment not compatible this type of input")

ErrIncompatibleEnvironment is returns by the resolver to signal that the given rule's inputs are not resolvable in the current environment.

Functions

func DefaultDockerProvider 

func DefaultDockerProvider(ctx context.Context) (docker.CommonAPIClient, error)

DefaultDockerProvider returns the default Docker client.

func DefaultRuleFilter 

func DefaultRuleFilter(r *Rule) bool

DefaultRuleFilter implements the default filtering of benchmarks' rules. It will exclude rules based on the evaluation context / environment running the benchmark.

func FinishXCCDFBenchmark 

func FinishXCCDFBenchmark(_ context.Context, benchmark *Benchmark)

FinishXCCDFBenchmark finishes an XCCDF benchmark by terminating the oscap-io processes.

Types

type Agent 

type Agent struct {
	// contains filtered or unexported fields
}

Agent is the compliance agent that is responsible for running compliance continuously benchmarks and configuration checking.

func NewAgent 

func NewAgent(telemetrySender telemetry.SimpleTelemetrySender, wmeta workloadmeta.Component, opts AgentOptions) *Agent

NewAgent returns a new compliance agent.

func (*Agent) Start 

func (a *Agent) Start() error

Start starts the compliance agent.

func (*Agent) StatusProvider 

func (a *Agent) StatusProvider() statusComp.Provider

StatusProvider returns the compliance status provider

func (*Agent) Stop 

func (a *Agent) Stop()

Stop stops the compliance agent.

type AgentOptions 

type AgentOptions struct {
	// ResolverOptions is the options passed to the constructed resolvers
	// internally. See resolver.go.
	ResolverOptions

	// ConfigDir is the directory in which benchmarks files and assets are
	// defined.
	ConfigDir string

	// Reporter is the output interface of the events that are gathered by the
	// agent.
	Reporter *LogReporter

	// RuleFilter allow specifying a global rule filtering that will be
	// applied on all loaded benchmarks.
	RuleFilter RuleFilter

	// CheckInterval is the period at which benchmarks are being run. It
	// should also be roughly the interval at which rule checks are being run.
	// By default: 20 minutes.
	CheckInterval time.Duration

	// CheckIntervalLowPriority is like CheckInterval but for low-priority
	// benchmarks.
	CheckIntervalLowPriority time.Duration

	// EnabledConfigurationExporters lists configuration exporter that shall be
	// enabled.
	EnabledConfigurationExporters []ConfigurationExporter

	// SysProbeClient is the HTTP client to allow the execution of benchmarks
	// from system-probe. see: cmd/system-probe/modules/compliance.go
	SysProbeClient *http.Client
}

AgentOptions holds the different options to configure the compliance agent.

type Benchmark 

type Benchmark struct {
	Name        string   `yaml:"name,omitempty" json:"name,omitempty"`
	FrameworkID string   `yaml:"framework,omitempty" json:"framework,omitempty"`
	Version     string   `yaml:"version,omitempty" json:"version,omitempty"`
	Tags        []string `yaml:"tags,omitempty" json:"tags,omitempty"`
	Rules       []*Rule  `yaml:"rules,omitempty" json:"rules,omitempty"`
	Source      string   `yaml:"-" json:"-"`
	Schema      struct {
		Version string `yaml:"version" json:"version"`
	} `yaml:"schema,omitempty" json:"schema,omitempty"`
	// contains filtered or unexported fields
}

Benchmark represents a set of rules that have a common identity, typically part of the same framework. It holds metadata that are shared between these rules. Rules of a same Benchmark are typically run together.

func LoadBenchmarks 

func LoadBenchmarks(rootDir, glob string, ruleFilter RuleFilter) ([]*Benchmark, error)

LoadBenchmarks will read the benchmark files that are contained in the given root directory, with a name matching the specified glob. If a ruleFilter is specified, the loaded benchmarks' rules are filtered. If a benchmarks has no rules after the filter is applied, it is not part of the results.

func (*Benchmark) Valid 

func (b *Benchmark) Valid() error

Valid is a validation check required for a Benchmark to be considered valid and be executed. It checks that all rules and input specs are actually valid.

type CheckContainerMeta 

type CheckContainerMeta struct {
	ContainerID string `json:"container_id"`
	ImageID     string `json:"image_id"`
	ImageName   string `json:"image_name"`
	ImageTag    string `json:"image_tag"`
}

CheckContainerMeta holds metadata related to the container that has been checked.

type CheckEvent 

type CheckEvent struct {
	AgentVersion string                 `json:"agent_version,omitempty"`
	RuleID       string                 `json:"agent_rule_id,omitempty"`
	RuleVersion  int                    `json:"agent_rule_version,omitempty"`
	FrameworkID  string                 `json:"agent_framework_id,omitempty"`
	Evaluator    Evaluator              `json:"evaluator,omitempty"`
	ExpireAt     *time.Time             `json:"expire_at,omitempty"`
	Result       CheckResult            `json:"result,omitempty"`
	ResourceType string                 `json:"resource_type,omitempty"`
	ResourceID   string                 `json:"resource_id,omitempty"`
	Container    *CheckContainerMeta    `json:"container,omitempty"`
	K8SManaged   *string                `json:"k8s_managed,omitempty"`
	Tags         []string               `json:"tags"`
	Data         map[string]interface{} `json:"data"`
	// contains filtered or unexported fields
}

CheckEvent is the data structure sent to the backend as a result of a rule evaluation.

func CheckEventFromError 

func CheckEventFromError(evaluator Evaluator, rule *Rule, benchmark *Benchmark, err error) *CheckEvent

CheckEventFromError wraps any error into a correct CheckEvent, detecting if the underlying error should be marked as skipped or not.

func EvaluateRegoRule 

func EvaluateRegoRule(ctx context.Context, resolvedInputs ResolvedInputs, benchmark *Benchmark, rule *Rule) []*CheckEvent

EvaluateRegoRule evaluates the given rule and resolved inputs map against the rule's rego program.

func EvaluateXCCDFRule 

func EvaluateXCCDFRule(ctx context.Context, hostname string, statsdClient statsd.ClientInterface, benchmark *Benchmark, rule *Rule) []*CheckEvent

EvaluateXCCDFRule evaluates the given rule using OpenSCAP tool.

func NewCheckError 

func NewCheckError(
	evaluator Evaluator,
	errReason error,
	resourceID,
	resourceType string,
	rule *Rule,
	benchmark *Benchmark,
) *CheckEvent

NewCheckError returns a CheckEvent with error status and associated error reason.

func NewCheckEvent 

func NewCheckEvent(
	evaluator Evaluator,
	result CheckResult,
	data map[string]interface{},
	resourceID,
	resourceType string,
	rule *Rule,
	benchmark *Benchmark,
) *CheckEvent

NewCheckEvent returns a CheckEvent with given status.

func NewCheckSkipped 

func NewCheckSkipped(
	evaluator Evaluator,
	skipReason error,
	resourceID,
	resourceType string,
	rule *Rule,
	benchmark *Benchmark,
) *CheckEvent

NewCheckSkipped returns a CheckEvent with skipped status.

func (*CheckEvent) String 

func (e *CheckEvent) String() string

type CheckResult 

type CheckResult string

CheckResult lists the different states of a check result. 

const (
	// CheckPassed is used to report successful result of a rule check
	// (condition passed)
	CheckPassed CheckResult = "passed"
	// CheckFailed is used to report unsuccessful result of a rule check
	// (condition failed)
	CheckFailed CheckResult = "failed"
	// CheckError is used to report result of a rule check that resulted in an
	// error (unable to evaluate condition)
	CheckError CheckResult = "error"
	// CheckSkipped is used to report result of a rule that is being skipped.
	CheckSkipped CheckResult = "skipped"
)

type CheckStatus added in v0.9.0 

type CheckStatus struct {
	RuleID      string
	Name        string
	Description string
	Version     string
	Framework   string
	Source      string
	InitError   error
	LastEvent   *CheckEvent
}

CheckStatus is used to store the last current status of each rule inside our compliance agent.

type ConfigurationExporter 

type ConfigurationExporter int

ConfigurationExporter is an enum type defining all configuration export configuration processes. 

const (
	// KubernetesExporter exports Kubernetes components configuration running
	// on the system.
	KubernetesExporter ConfigurationExporter = iota

	// AptExporter exports local APT configuration data.
	AptExporter

	// DBExporter exports local or containerized DB application configuration
	// data.
	DBExporter
)

type DockerProvider 

type DockerProvider func(context.Context) (docker.CommonAPIClient, error)

DockerProvider is a function returning a Docker client.

type Evaluator 

type Evaluator string

Evaluator is a string representing the type of evaluator that produced the event. 

const (
	// RegoEvaluator uses the rego engine to evaluate a check.
	RegoEvaluator Evaluator = "rego"
	// XCCDFEvaluator uses OpenSCAP to evaluate a check.
	XCCDFEvaluator Evaluator = "xccdf"
)

type FileWatchRule 

type FileWatchRule rule.FileWatchRule

FileWatchRule is used to audit access to particular files or directories that you may be interested in.

func (*FileWatchRule) Resolve 

func (r *FileWatchRule) Resolve() interface{}

Resolve the file watch rule

type InputSpec 

type InputSpec struct {
	File          *InputSpecFile          `yaml:"file,omitempty" json:"file,omitempty"`
	Process       *InputSpecProcess       `yaml:"process,omitempty" json:"process,omitempty"`
	Group         *InputSpecGroup         `yaml:"group,omitempty" json:"group,omitempty"`
	Audit         *InputSpecAudit         `yaml:"audit,omitempty" json:"audit,omitempty"`
	Docker        *InputSpecDocker        `yaml:"docker,omitempty" json:"docker,omitempty"`
	KubeApiserver *InputSpecKubeapiserver `yaml:"kubeApiserver,omitempty" json:"kubeApiserver,omitempty"`
	Package       *InputSpecPackage       `yaml:"package,omitempty" json:"package,omitempty"`
	XCCDF         *InputSpecXCCDF         `yaml:"xccdf,omitempty" json:"xccdf,omitempty"`
	Constants     *InputSpecConstants     `yaml:"constants,omitempty" json:"constants,omitempty"`

	TagName string `yaml:"tag,omitempty" json:"tag,omitempty"`
	Type    string `yaml:"type,omitempty" json:"type,omitempty"`
}

InputSpec is a union type that holds the description of a set of inputs to be gathered typically by a Resolver.

func (*InputSpec) Valid 

func (i *InputSpec) Valid() error

Valid is a validation check required for InputSpec to be executed.

type InputSpecAudit 

type InputSpecAudit struct {
	Path string `yaml:"path" json:"path"`
}

InputSpecAudit describes the spec to resolve a Linux Audit informations.

type InputSpecConstants 

type InputSpecConstants map[string]interface{}

InputSpecConstants can be used to pass constants data to the evaluator.

type InputSpecDocker 

type InputSpecDocker struct {
	Kind string `yaml:"kind" json:"kind"`
}

InputSpecDocker describes the spec to resolve a Docker resource informations.

type InputSpecFile 

type InputSpecFile struct {
	Path   string `yaml:"path" json:"path"`
	Glob   string `yaml:"glob" json:"glob"`
	Parser string `yaml:"parser,omitempty" json:"parser,omitempty"`
}

InputSpecFile describes the spec to resolve file informations.

type InputSpecGroup 

type InputSpecGroup struct {
	Name string `yaml:"name" json:"name"`
}

InputSpecGroup describes the spec to resolve a unix group informations.

type InputSpecKubeapiserver 

type InputSpecKubeapiserver struct {
	Kind          string `yaml:"kind" json:"kind"`
	Version       string `yaml:"version,omitempty" json:"version,omitempty"`
	Group         string `yaml:"group,omitempty" json:"group,omitempty"`
	Namespace     string `yaml:"namespace,omitempty" json:"namespace,omitempty"`
	LabelSelector string `yaml:"labelSelector,omitempty" json:"labelSelector,omitempty"`
	FieldSelector string `yaml:"fieldSelector,omitempty" json:"fieldSelector,omitempty"`
	APIRequest    struct {
		Verb         string `yaml:"verb" json:"verb"`
		ResourceName string `yaml:"resourceName,omitempty" json:"resourceName,omitempty"`
	} `yaml:"apiRequest" json:"apiRequest"`
}

InputSpecKubeapiserver describes the spec to resolve a Kubernetes resource information from from kube-apiserver.

type InputSpecPackage 

type InputSpecPackage struct {
	Names []string `yaml:"names" json:"names"`
}

InputSpecPackage defines the names of the software packages that need to be resolved

type InputSpecProcess 

type InputSpecProcess struct {
	Name string   `yaml:"name" json:"name"`
	Envs []string `yaml:"envs,omitempty" json:"envs,omitempty"`
}

InputSpecProcess describes the spec to resolve process informations.

type InputSpecXCCDF 

type InputSpecXCCDF struct {
	Name    string   `yaml:"name" json:"name"`
	Profile string   `yaml:"profile" json:"profile"`
	Rule    string   `yaml:"rule" json:"rule"`
	Rules   []string `yaml:"rules,omitempty" json:"rules,omitempty"`
}

InputSpecXCCDF describes the spec to resolve a XCCDF evaluation result.

type KubernetesProvider 

type KubernetesProvider func(context.Context) (kubedynamic.Interface, kubediscovery.DiscoveryInterface, error)

KubernetesProvider is a function returning a Kubernetes client.

type LinuxAuditClient 

type LinuxAuditClient interface {
	GetFileWatchRules() ([]*FileWatchRule, error)
	Close() error
}

LinuxAuditClient is an interface that implements the capability of parsing Linux Audit rules.

func DefaultLinuxAuditProvider 

func DefaultLinuxAuditProvider(_ context.Context) (LinuxAuditClient, error)

DefaultLinuxAuditProvider returns the default Linux Audit client.

type LinuxAuditProvider 

type LinuxAuditProvider func(context.Context) (LinuxAuditClient, error)

LinuxAuditProvider is a function returning a Linux Audit client.

type LogReporter 

type LogReporter struct {
	// contains filtered or unexported fields
}

LogReporter is responsible for sending compliance logs to DataDog backends.

func NewLogReporter 

func NewLogReporter(hostname string, sourceName, sourceType string, endpoints *config.Endpoints, dstcontext *client.DestinationsContext) *LogReporter

NewLogReporter instantiates a new log LogReporter

func (*LogReporter) Endpoints 

func (r *LogReporter) Endpoints() *config.Endpoints

Endpoints returns the endpoints associated with the log reporter.

func (*LogReporter) ReportEvent 

func (r *LogReporter) ReportEvent(event interface{})

ReportEvent should be used to send an event to the backend.

func (*LogReporter) Stop 

func (r *LogReporter) Stop()

Stop stops the LogReporter

type ResolvedInputs 

type ResolvedInputs map[string]interface{}

ResolvedInputs is the generic data structure that is returned by a Resolver and passed to the rego evaluator.

Ideally if Go did support inline JSON struct tag, this type would be: see https://github.com/golang/go/issues/6213 

struct {
	Context  *ResolvingContext      `json:"context"`
	Resolved map[string]interface{} `json:",inline"`
}

func NewResolvedInputs 

func NewResolvedInputs(resolvingContext ResolvingContext, resolved map[string]interface{}) (ResolvedInputs, error)

NewResolvedInputs builds a ResolvedInputs map from the given resolving context and generic resolved data.

func (ResolvedInputs) GetContext 

func (r ResolvedInputs) GetContext() *ResolvingContext

GetContext returns the ResolvingContext associated with this resolved inputs.

type Resolver 

type Resolver interface {
	ResolveInputs(ctx context.Context, rule *Rule) (ResolvedInputs, error)
	Close()
}

Resolver interface defines a generic method to resolve the inputs associated with a given rule. The Close() method should be called whenever the resolver is stopped being used to cleanup underlying resources.

func NewResolver 

func NewResolver(ctx context.Context, opts ResolverOptions) Resolver

NewResolver returns the default inputs resolver that is able to resolve any kind of supported inputs. It holds a small cache for loaded file metadata and different client connexions that may be used for inputs resolution.

type ResolverOptions 

type ResolverOptions struct {
	// Hostname is the name of the host running the resolver.
	Hostname string

	// HostRoot is the path to the mountpoint of host root filesystem. In case
	// the compliance module is run as part of a container.
	HostRoot string

	// HostRootPID sets the resolving context relative to a specific process
	// ID (optional)
	HostRootPID int32

	// StatsdClient is the statsd client used internally by the compliance
	// resolver (optional)
	StatsdClient statsd.ClientInterface

	DockerProvider
	KubernetesProvider
	LinuxAuditProvider
}

ResolverOptions is an options struct required to instantiate a Resolver instance.

type ResolvingContext 

type ResolvingContext struct {
	RuleID            string                `json:"ruleID"`
	Hostname          string                `json:"hostname"`
	KubernetesCluster string                `json:"kubernetes_cluster"`
	ContainerID       string                `json:"container_id"`
	InputSpecs        map[string]*InputSpec `json:"input"`
}

ResolvingContext is part of the resolved inputs data that should be passed as the "context" field in the rego evaluator input. Note that because of the way rego bails when dereferencing an undefined key, we do not mark any json tag as "omitempty".

type ResourceLog 

type ResourceLog struct {
	AgentVersion string              `json:"agent_version,omitempty"`
	ExpireAt     *time.Time          `json:"expire_at,omitempty"`
	ResourceType string              `json:"resource_type,omitempty"`
	ResourceID   string              `json:"resource_id,omitempty"`
	ResourceData interface{}         `json:"resource_data,omitempty"`
	Container    *CheckContainerMeta `json:"container,omitempty"`
	Tags         []string            `json:"tags"`
}

ResourceLog is the data structure holding a resource configuration data.

func NewResourceLog 

func NewResourceLog(resourceID, resourceType string, resource interface{}) *ResourceLog

NewResourceLog returns a ResourceLog.

type Rule 

type Rule struct {
	ID          string       `yaml:"id" json:"id"`
	Description string       `yaml:"description,omitempty" json:"description,omitempty"`
	SkipOnK8s   bool         `yaml:"skipOnKubernetes,omitempty" json:"skipOnKubernetes,omitempty"`
	Module      string       `yaml:"module,omitempty" json:"module,omitempty"`
	Scopes      []RuleScope  `yaml:"scope,omitempty" json:"scope,omitempty"`
	InputSpecs  []*InputSpec `yaml:"input,omitempty" json:"input,omitempty"`
	Imports     []string     `yaml:"imports,omitempty" json:"imports,omitempty"`
	Period      string       `yaml:"period,omitempty" json:"period,omitempty"`
	Filters     []string     `yaml:"filters,omitempty" json:"filters,omitempty"`
}

Rule defines a list of inputs against which we can evaluate properties. It also holds all metadata associated with the rule.

func (*Rule) HasScope 

func (r *Rule) HasScope(scope RuleScope) bool

HasScope tests if the rule has the given scope.

func (*Rule) IsRego 

func (r *Rule) IsRego() bool

IsRego returns true if the rule is a rego rule.

func (*Rule) IsXCCDF 

func (r *Rule) IsXCCDF() bool

IsXCCDF returns true if the rule is a XCCDF / OpenSCAP rule.

type RuleFilter 

type RuleFilter func(*Rule) bool

RuleFilter defines a function type that can be used to filter rules.

type RuleScope added in v0.9.0 

type RuleScope string

RuleScope defines the different context in which the rule is allowed to run. 

const (
	// Unscoped scope used when no particular scope is required
	Unscoped RuleScope = "none"
	// DockerScope used for rules requiring a Docker daemon running.
	DockerScope RuleScope = "docker"
	// KubernetesNodeScope used for rules requireing a kubelet process running.
	KubernetesNodeScope RuleScope = "kubernetesNode"
	// KubernetesClusterScope used for rules requireing a kube-apiserver process running.
	KubernetesClusterScope RuleScope = "kubernetesCluster"
)

Source Files

View all Source files

Directories

Path Synopsis
Package aptconfig is a compliance submodule that is able to parse the APT tool configuration and export it as a log.
 Package aptconfig is a compliance submodule that is able to parse the APT tool configuration and export it as a log.
Package dbconfig is a compliance submodule that is able to parse and export databases applications configurations.
 Package dbconfig is a compliance submodule that is able to parse and export databases applications configurations.
Package k8sconfig is a compliance submodule that is able to parse the Kubernetes components configurations and export it as a log.
 Package k8sconfig is a compliance submodule that is able to parse the Kubernetes components configurations and export it as a log.
Package metrics implements everything related to metrics of the pkg/compliance module.
 Package metrics implements everything related to metrics of the pkg/compliance module.
Package scap implements some internal parsing of the OpenSCAP analysis results.
 Package scap implements some internal parsing of the OpenSCAP analysis results.
tools
k8s_schema_generator
Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
 Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
k8s_types_generator
Package main is the entrypoint of the compliance k8s_types_generator tool that is responsible for generating various configuration types of Kubernetes components.
 Package main is the entrypoint of the compliance k8s_types_generator tool that is responsible for generating various configuration types of Kubernetes components.
Package utils is a compliance internal submodule implementing various utilies.
 Package utils is a compliance internal submodule implementing various utilies.

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