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add support for sarif format violation reports (#806)
* added support for sarif formatted violation reports * updated sarif.level to violation.severity mapping * accomodate for --show-passed flag * added unit test * added logical location * added tool driver version property in sarif output
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Devang Gaur
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May 31, 2021
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| /* | ||
| Copyright (C) 2020 Accurics, Inc. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
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| package writer | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "github.com/accurics/terrascan/pkg/policy" | ||
| "github.com/accurics/terrascan/pkg/version" | ||
| "github.com/owenrumney/go-sarif/sarif" | ||
| "io" | ||
| "path/filepath" | ||
| "strings" | ||
| ) | ||
|
|
||
| const ( | ||
| sarifFormat supportedFormat = "sarif" | ||
| ) | ||
|
|
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| func init() { | ||
| RegisterWriter(sarifFormat, SarifWriter) | ||
| } | ||
|
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| // SarifWriter writes sarif formatted violation results report | ||
| func SarifWriter(data interface{}, writer io.Writer) error { | ||
| outputData := data.(policy.EngineOutput) | ||
| report, err := sarif.New(sarif.Version210) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| run := sarif.NewRun("terrascan", "https://github.com/accurics/terrascan") | ||
| run.Tool.Driver.WithVersion(version.GetNumeric()) | ||
|
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| // add a run to the report | ||
| report.AddRun(run) | ||
|
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| for _, passedRule := range outputData.PassedRules { | ||
| m := make(map[string]string) | ||
| m["category"] = passedRule.Category | ||
| m["severity"] = passedRule.Severity | ||
|
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| run.AddRule(string(passedRule.RuleID)). | ||
| WithDescription(passedRule.Description).WithName(passedRule.RuleName).WithProperties(m) | ||
| } | ||
| resourcePath := outputData.Summary.ResourcePath | ||
| // for each result add the rule, location and result to the report | ||
| for _, violation := range outputData.Violations { | ||
| m := make(map[string]string) | ||
| m["category"] = violation.Category | ||
| m["severity"] = violation.Severity | ||
|
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| rule := run.AddRule(string(violation.RuleID)). | ||
| WithDescription(violation.Description).WithName(violation.RuleName).WithProperties(m) | ||
|
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| absFilePath := violation.File | ||
| if !filepath.IsAbs(violation.File) { | ||
| absFilePath = filepath.Join(resourcePath, violation.File) | ||
| } | ||
|
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| location := sarif.NewLocation(). | ||
| WithPhysicalLocation(sarif.NewPhysicalLocation(). | ||
| WithArtifactLocation(sarif.NewSimpleArtifactLocation(fmt.Sprintf("file://%s", absFilePath))). | ||
| WithRegion(sarif.NewRegion().WithStartLine(violation.LineNumber))) | ||
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| if len(violation.ResourceType) > 0 && len(violation.ResourceName) > 0 { | ||
| location.LogicalLocations = append(location.LogicalLocations, sarif.NewLogicalLocation(). | ||
| WithKind(violation.ResourceType).WithName(violation.ResourceName)) | ||
| } | ||
|
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| run.AddResult(rule.ID). | ||
| WithMessage(sarif.NewTextMessage(violation.Description)). | ||
| WithLevel(getSarifLevel(violation.Severity)). | ||
| WithLocation(location) | ||
| } | ||
|
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| // print the report to anything that implements `io.Writer` | ||
| return report.PrettyWrite(writer) | ||
| } | ||
|
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| func getSarifLevel(severity string) string { | ||
| m := make(map[string]string, 3) | ||
| m["low"] = "note" | ||
| m["medium"] = "warning" | ||
| m["high"] = "error" | ||
|
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| return m[strings.ToLower(severity)] | ||
| } |
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