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fix(pipeline): validate expected commit before passing to git-checkout pipeline #1667

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8 changes: 8 additions & 0 deletions pkg/build/pipeline.go
Original file line number Diff line number Diff line change
Expand Up @@ -159,6 +159,14 @@ func validateWith(data map[string]string, inputs map[string]config.Input) (map[s
return data, fmt.Errorf("checksum input %q for pipeline, invalid length", k)
}
}
if k == "expected-commit" && data[k] != "" {
if !matchValidShaChars(data[k]) {
return data, fmt.Errorf("expectec commit %q for pipeline contains invalid characters", k)
}
if len(data[k]) != 40 {
return data, fmt.Errorf("expected commit %q for pipeline, invalid length", k)
}
}

if v.Required && data[k] == "" {
return data, fmt.Errorf("required input %q for pipeline is missing", k)
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