mirror of
https://github.com/aquasecurity/kube-bench.git
synced 2024-10-31 20:39:14 +00:00
172 lines
4.7 KiB
Go
172 lines
4.7 KiB
Go
// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cmd
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import (
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"fmt"
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"io/ioutil"
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"path/filepath"
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"github.com/aquasecurity/kube-bench/check"
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"github.com/golang/glog"
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"github.com/spf13/viper"
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)
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var (
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errmsgs string
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)
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func runChecks(t check.NodeType) {
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var summary check.Summary
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var nodetype string
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var file string
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var err error
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var typeConf *viper.Viper
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switch t {
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case check.MASTER:
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file = masterFile
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nodetype = "master"
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case check.NODE:
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file = nodeFile
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nodetype = "node"
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case check.FEDERATED:
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file = federatedFile
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nodetype = "federated"
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}
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ver := getKubeVersion()
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switch ver {
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case "1.9", "1.10":
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continueWithError(nil, fmt.Sprintf("No CIS spec for %s - using tests from CIS 1.2.0 spec for Kubernetes 1.8\n", ver))
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ver = "1.8"
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}
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path := filepath.Join(cfgDir, ver)
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def := filepath.Join(path, file)
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in, err := ioutil.ReadFile(def)
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if err != nil {
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exitWithError(fmt.Errorf("error opening %s controls file: %v", t, err))
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}
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// Merge kubernetes version specific config if any.
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viper.SetConfigFile(path + "/config.yaml")
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err = viper.MergeInConfig()
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if err != nil {
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continueWithError(err, fmt.Sprintf("Reading %s specific configuration file", ver))
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}
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typeConf = viper.Sub(nodetype)
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// Get the set of exectuables and config files we care about on this type of node. This also
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// checks that the executables we need for the node type are running.
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binmap := getBinaries(typeConf)
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confmap := getConfigFiles(typeConf)
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// Variable substitutions. Replace all occurrences of variables in controls files.
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s := string(in)
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s = makeSubstitutions(s, "bin", binmap)
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s = makeSubstitutions(s, "conf", confmap)
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glog.V(1).Info(fmt.Sprintf("Using config file: %s\n", viper.ConfigFileUsed()))
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glog.V(1).Info(fmt.Sprintf("Using benchmark file: %s\n", def))
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controls, err := check.NewControls(t, []byte(s))
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if err != nil {
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exitWithError(fmt.Errorf("error setting up %s controls: %v", t, err))
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}
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if groupList != "" && checkList == "" {
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ids := cleanIDs(groupList)
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summary = controls.RunGroup(ids...)
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} else if checkList != "" && groupList == "" {
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ids := cleanIDs(checkList)
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summary = controls.RunChecks(ids...)
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} else if checkList != "" && groupList != "" {
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exitWithError(fmt.Errorf("group option and check option can't be used together"))
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} else {
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summary = controls.RunGroup()
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}
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// if we successfully ran some tests and it's json format, ignore the warnings
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if (summary.Fail > 0 || summary.Warn > 0 || summary.Pass > 0) && jsonFmt {
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out, err := controls.JSON()
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if err != nil {
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exitWithError(fmt.Errorf("failed to output in JSON format: %v", err))
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}
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fmt.Println(string(out))
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} else {
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// if we want to store in PostgreSQL, convert to JSON and save it
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if (summary.Fail > 0 || summary.Warn > 0 || summary.Pass > 0) && pgSQL {
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out, err := controls.JSON()
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if err != nil {
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exitWithError(fmt.Errorf("failed to output in JSON format: %v", err))
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}
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savePgsql(string(out))
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} else {
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prettyPrint(controls, summary)
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}
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}
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}
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// colorPrint outputs the state in a specific colour, along with a message string
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func colorPrint(state check.State, s string) {
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colors[state].Printf("[%s] ", state)
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fmt.Printf("%s", s)
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}
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// prettyPrint outputs the results to stdout in human-readable format
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func prettyPrint(r *check.Controls, summary check.Summary) {
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colorPrint(check.INFO, fmt.Sprintf("%s %s\n", r.ID, r.Text))
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for _, g := range r.Groups {
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colorPrint(check.INFO, fmt.Sprintf("%s %s\n", g.ID, g.Text))
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for _, c := range g.Checks {
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colorPrint(c.State, fmt.Sprintf("%s %s\n", c.ID, c.Text))
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}
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}
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fmt.Println()
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// Print remediations.
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if summary.Fail > 0 || summary.Warn > 0 {
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colors[check.WARN].Printf("== Remediations ==\n")
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for _, g := range r.Groups {
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for _, c := range g.Checks {
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if c.State != check.PASS {
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fmt.Printf("%s %s\n", c.ID, c.Remediation)
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}
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}
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}
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fmt.Println()
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}
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// Print summary setting output color to highest severity.
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var res check.State
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if summary.Fail > 0 {
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res = check.FAIL
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} else if summary.Warn > 0 {
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res = check.WARN
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} else {
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res = check.PASS
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}
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colors[res].Printf("== Summary ==\n")
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fmt.Printf("%d checks PASS\n%d checks FAIL\n%d checks WARN\n",
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summary.Pass, summary.Fail, summary.Warn,
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)
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}
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