use std::path::PathBuf; use crate::config::tree::{Gpg, gpg}; pub use gix_object::signature::{    Format,    verify::{Outcome, Status, TrustLevel},}; /// The error returned by [`crate::Commit::verify_signature()`].#[derive(Debug, thiserror::Error)]#[expect(missing_docs)]pub enum Error {    #[error(transparent)]    Decode(#[from] gix_object::decode::Error),    #[error(transparent)]    Commit(#[from] crate::object::commit::Error),    #[error(transparent)]    InvalidTrustLevel(#[from] crate::config::key::GenericErrorWithValue),    #[error("Could not interpolate a configured signature-verification path")]    ConfiguredPath(#[from] gix_config::path::interpolate::Error),    #[error("gpg.ssh.allowedSignersFile must be configured for SSH signature verification")]    MissingAllowedSigners,    #[error(transparent)]    Verify(#[from] gix_object::signature::verify::Error),} pub(crate) fn verify(commit: &crate::Commit<'_>) -> Result<Option<Outcome>, Error> {    let Some((signature, signed_data)) = commit.signature()? else {        return Ok(None);    };    let config = commit.repo.config_snapshot();    let minimum_trust = config        .string(Gpg::MIN_TRUST_LEVEL)        .map(|value| Gpg::MIN_TRUST_LEVEL.try_into_trust_level(value))        .transpose()?        .unwrap_or_default();    let format = Format::from_signature(&signature).ok_or(gix_object::signature::verify::Error::UnsupportedFormat)?;    let program = super::signature_program(&config, format)?;    let options = match format {        Format::OpenPgp => gix_object::signature::verify::Options::OpenPgp {            program,            program_arguments: Vec::new(),            environment: Vec::new(),            minimum_trust,        },        Format::X509 => gix_object::signature::verify::Options::X509 {            program,            program_arguments: Vec::new(),            environment: Vec::new(),            minimum_trust,        },        Format::Ssh => {            let allowed_signers = config                .trusted_path(gpg::Ssh::ALLOWED_SIGNERS_FILE)?                .ok_or(Error::MissingAllowedSigners)?;            let revocation_file = config                .trusted_path(gpg::Ssh::REVOCATION_FILE)?                .filter(|path| path.exists());            gix_object::signature::verify::Options::Ssh {                program,                program_arguments: Vec::new(),                environment: Vec::new(),                allowed_signers: resolve_relative_to_repository(commit.repo, allowed_signers),                revocation_file: revocation_file.map(|path| resolve_relative_to_repository(commit.repo, path)),                verify_time: commit.time()?,                minimum_trust,            }        }    };    signed_data.verify(&signature, options).map(Some).map_err(Into::into)} fn resolve_relative_to_repository(repo: &crate::Repository, path: PathBuf) -> PathBuf {    if path.is_absolute() {        path    } else {        repo.workdir().unwrap_or_else(|| repo.git_dir()).join(path)    }}