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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| // Copyright 2024 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 git | ||
|
|
||
| import ( | ||
| "os/exec" | ||
| "strings" | ||
|
|
||
| "github.com/go-git/go-git/v5" | ||
| "github.com/in-toto/go-witness/attestation" | ||
| "github.com/in-toto/go-witness/cryptoutil" | ||
| ) | ||
|
|
||
| // GitExists checks if the git binary is available. | ||
| // This can be used to fall back to go-git implementation. | ||
| func GitExists() bool { | ||
|
|
||
| _, err := exec.LookPath("git") | ||
| if err != nil { | ||
| return false | ||
| } else { | ||
| return true | ||
| } | ||
| } | ||
|
|
||
| // GitGetBinPath retrieves the path to the git binary that is used by the attestor. | ||
| func GitGetBinPath() (string, error) { | ||
| path, err := exec.LookPath("git") | ||
| if err != nil { | ||
| return "", err | ||
| } else { | ||
| return path, nil | ||
| } | ||
| } | ||
|
|
||
| // GitGetBinHash retrieves a sha256 hash of the git binary that is located on the system. | ||
| // The path is determined based on exec.LookPath(). | ||
| func GitGetBinHash(ctx *attestation.AttestationContext) (cryptoutil.DigestSet, error) { | ||
| path, err := exec.LookPath("git") | ||
| if err != nil { | ||
| return cryptoutil.DigestSet{}, err | ||
| } | ||
|
|
||
| gitBinDigest, err := cryptoutil.CalculateDigestSetFromFile(path, ctx.Hashes()) | ||
| if err != nil { | ||
| return cryptoutil.DigestSet{}, err | ||
| } | ||
|
|
||
| if err != nil { | ||
| return cryptoutil.DigestSet{}, err | ||
| } | ||
|
|
||
| return gitBinDigest, nil | ||
| } | ||
|
|
||
| // GitGetStatus retrieves the status of staging and worktree | ||
| // from the git status --porcelain output | ||
| func GitGetStatus(workDir string) (map[string]Status, error) { | ||
|
|
||
| // Execute the git status --porcelain command | ||
| cmd := exec.Command("git", "-C", workDir, "status", "--porcelain") | ||
| outputBytes, err := cmd.Output() | ||
| if err != nil { | ||
| return map[string]Status{}, err | ||
| } | ||
|
|
||
| // Convert the output to a string and split into lines | ||
| output := string(outputBytes) | ||
| lines := strings.Split(output, "\n") | ||
|
|
||
| // Iterate over the lines and parse the status | ||
| var gitStatuses map[string]Status = make(map[string]Status) | ||
| for _, line := range lines { | ||
| // Skip empty lines | ||
| if len(line) == 0 { | ||
| continue | ||
| } | ||
|
|
||
| // The first two characters are the status codes | ||
| repoStatus := statusCodeString(git.StatusCode(line[0])) | ||
| worktreeStatus := statusCodeString(git.StatusCode(line[1])) | ||
| filePath := strings.TrimSpace(line[2:]) | ||
|
|
||
| // Append the parsed status to the list | ||
| gitStatuses[filePath] = Status{ | ||
| Staging: repoStatus, | ||
| Worktree: worktreeStatus, | ||
| } | ||
| } | ||
|
|
||
| return gitStatuses, nil | ||
| } |
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