8cca4346a5
Add a new datasource that: - Receives HTTP requests from remediation components - Apply rules on them to determine whether they are malicious or not - Rules can be evaluated in-band (the remediation component will block the request directly) or out-band (the RC will let the request through, but crowdsec can still process the rule matches with scenarios) The PR also adds support for 2 new hub items: - appsec-configs: Configure the Application Security Engine (which rules to load, in which phase) - appsec-rules: a rule that is added in the Application Security Engine (can use either our own format, or seclang) --------- Co-authored-by: alteredCoder <kevin@crowdsec.net> Co-authored-by: Sebastien Blot <sebastien@crowdsec.net> Co-authored-by: mmetc <92726601+mmetc@users.noreply.github.com> Co-authored-by: Marco Mariani <marco@crowdsec.net>
52 lines
1.2 KiB
Go
52 lines
1.2 KiB
Go
package appsec
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import (
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"os"
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"github.com/crowdsecurity/crowdsec/pkg/cwhub"
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log "github.com/sirupsen/logrus"
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"gopkg.in/yaml.v2"
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)
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var appsecRules map[string]AppsecCollectionConfig = make(map[string]AppsecCollectionConfig) //FIXME: would probably be better to have a struct for this
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var hub *cwhub.Hub //FIXME: this is a temporary hack to make the hub available in the package
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func LoadAppsecRules(hubInstance *cwhub.Hub) error {
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hub = hubInstance
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for _, hubAppsecRuleItem := range hub.GetItemMap(cwhub.APPSEC_RULES) {
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if !hubAppsecRuleItem.State.Installed {
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continue
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}
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content, err := os.ReadFile(hubAppsecRuleItem.State.LocalPath)
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if err != nil {
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log.Warnf("unable to read file %s : %s", hubAppsecRuleItem.State.LocalPath, err)
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continue
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}
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var rule AppsecCollectionConfig
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err = yaml.UnmarshalStrict(content, &rule)
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if err != nil {
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log.Warnf("unable to unmarshal file %s : %s", hubAppsecRuleItem.State.LocalPath, err)
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continue
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}
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rule.hash = hubAppsecRuleItem.State.LocalHash
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rule.version = hubAppsecRuleItem.Version
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log.Infof("Adding %s to appsec rules", rule.Name)
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appsecRules[rule.Name] = rule
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}
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if len(appsecRules) == 0 {
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log.Debugf("No appsec rules found")
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}
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return nil
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}
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