-
Notifications
You must be signed in to change notification settings - Fork 60
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
1 parent
bf5c3a7
commit 97adc5f
Showing
3 changed files
with
131 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| // Copyright 2022 The Witness Contributors | ||
| // | ||
| // 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. | ||
|
|
||
| package sarif | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/owenrumney/go-sarif/sarif" | ||
| "github.com/testifysec/witness/pkg/attestation" | ||
| "github.com/testifysec/witness/pkg/cryptoutil" | ||
| ) | ||
|
|
||
| const ( | ||
| Name = "sarif" | ||
| Type = "https://witness.testifysec.com/attestations/sarif/v0.1" | ||
| RunType = attestation.PostRunType | ||
| ) | ||
|
|
||
| var mimeTypes = []string{"text/plain", "application/json"} | ||
|
|
||
| func init() { | ||
| attestation.RegisterAttestation(Name, Type, RunType, func() attestation.Attestor { | ||
| return New() | ||
| }) | ||
| } | ||
|
|
||
| type Attestor struct { | ||
| sarif.Report `json:"report"` | ||
| ReportFile string `json:"reportFileName"` | ||
| ReportDigestSet cryptoutil.DigestSet `json:"reportDigestSet"` | ||
| } | ||
|
|
||
| func New() *Attestor { | ||
| return &Attestor{} | ||
| } | ||
|
|
||
| func (a *Attestor) Name() string { | ||
| return Name | ||
| } | ||
|
|
||
| func (a *Attestor) Type() string { | ||
| return Type | ||
| } | ||
|
|
||
| func (a *Attestor) RunType() attestation.RunType { | ||
| return RunType | ||
| } | ||
|
|
||
| func (a *Attestor) Attest(ctx *attestation.AttestationContext) error { | ||
| if err := a.getCanidate(ctx); err != nil { | ||
| fmt.Printf("error getting canidate: %s\n", err) | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (a *Attestor) getCanidate(ctx *attestation.AttestationContext) error { | ||
| products := ctx.Products() | ||
|
|
||
| if len(products) == 0 { | ||
| return fmt.Errorf("no products to attest") | ||
| } | ||
|
|
||
| for path, product := range products { | ||
| for _, mimeType := range mimeTypes { | ||
| if !strings.Contains(mimeType, product.MimeType) { | ||
| continue | ||
| } | ||
| } | ||
|
|
||
| newDigestSet, err := cryptoutil.CalculateDigestSetFromFile(path, ctx.Hashes()) | ||
| if newDigestSet == nil || err != nil { | ||
| return fmt.Errorf("error calculating digest set from file: %s", path) | ||
| } | ||
|
|
||
| if !newDigestSet.Equal(product.Digest) { | ||
| return fmt.Errorf("integrity error: product digest set does not match canidate digest set") | ||
| } | ||
|
|
||
| f, err := os.Open(path) | ||
| if err != nil { | ||
| return fmt.Errorf("error opening file: %s", path) | ||
| } | ||
|
|
||
| reportBytes, err := ioutil.ReadAll(f) | ||
| if err != nil { | ||
| return fmt.Errorf("error reading file: %s", path) | ||
| } | ||
|
|
||
| //check to see if we can unmarshal into sarif type | ||
| if err := json.Unmarshal(reportBytes, &a.Report); err != nil { | ||
| fmt.Printf("error unmarshaling report: %s\n", err) | ||
| continue | ||
| } | ||
|
|
||
| a.ReportFile = path | ||
| a.ReportDigestSet = product.Digest | ||
|
|
||
| return nil | ||
| } | ||
| return fmt.Errorf("no sarif file found") | ||
| } |