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Original file line number | Diff line number | Diff line change |
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// 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 | ||
|
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import ( | ||
"os/exec" | ||
"strings" | ||
|
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"github.com/go-git/go-git/v5" | ||
"github.com/in-toto/go-witness/attestation" | ||
"github.com/in-toto/go-witness/cryptoutil" | ||
) | ||
|
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// GitExists checks if the git binary is available. | ||
// This can be used to fall back to go-git implementation. | ||
func GitExists() bool { | ||
|
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_, err := exec.LookPath("git") | ||
if err != nil { | ||
return false | ||
} else { | ||
return true | ||
} | ||
} | ||
|
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// 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 | ||
} | ||
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gitBinDigest, err := cryptoutil.CalculateDigestSetFromFile(path, ctx.Hashes()) | ||
if err != nil { | ||
return cryptoutil.DigestSet{}, err | ||
} | ||
|
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if err != nil { | ||
return cryptoutil.DigestSet{}, err | ||
} | ||
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return gitBinDigest, nil | ||
} | ||
|
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// GitGetStatus retrieves the status of staging and worktree | ||
// from the git status --porcelain output | ||
func GitGetStatus(workDir string) (map[string]Status, error) { | ||
|
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// 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 | ||
} | ||
|
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// Convert the output to a string and split into lines | ||
output := string(outputBytes) | ||
lines := strings.Split(output, "\n") | ||
|
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// 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 | ||
} | ||
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// 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:]) | ||
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// Append the parsed status to the list | ||
gitStatuses[filePath] = Status{ | ||
Staging: repoStatus, | ||
Worktree: worktreeStatus, | ||
} | ||
} | ||
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return gitStatuses, nil | ||
} |
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