cargo-allow 0.1.1

Source-tree exception ledger and policy scanner for Rust repositories.
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use allow_core::{AllowEntry, CargoAllowResult, Finding, FindingKind};
use std::str::FromStr;

#[derive(Debug, Clone, Copy)]
pub(crate) struct KindFilter {
    pub(crate) kind: FindingKind,
    pub(crate) family: FamilyFilter,
}

#[derive(Debug, Clone, Copy)]
pub(crate) enum FamilyFilter {
    Any,
    Exact(&'static str),
    Workflow,
}

impl KindFilter {
    pub(crate) fn matches_finding(self, finding: &Finding) -> bool {
        finding.kind == self.kind && self.family.matches(finding.family.as_deref())
    }

    pub(crate) fn matches_entry(self, entry: &AllowEntry) -> bool {
        entry.kind == self.kind && self.family.matches(entry.family.as_deref())
    }
}

impl FamilyFilter {
    pub(crate) fn matches(self, family: Option<&str>) -> bool {
        match self {
            Self::Any => true,
            Self::Exact(expected) => family == Some(expected),
            Self::Workflow => {
                matches!(family, Some("github_workflow" | "workflow_external_action"))
            }
        }
    }
}

pub(crate) fn parse_kind_filter(kind: &str) -> CargoAllowResult<KindFilter> {
    if is_panic_compat_kind(kind) {
        return Ok(KindFilter {
            kind: FindingKind::Panic,
            family: FamilyFilter::Any,
        });
    }
    if is_no_panic_allowlist_compat_kind(kind) {
        return Ok(KindFilter {
            kind: FindingKind::Panic,
            family: FamilyFilter::Any,
        });
    }
    if is_clippy_compat_kind(kind) {
        return Ok(KindFilter {
            kind: FindingKind::LintException,
            family: FamilyFilter::Any,
        });
    }
    if is_unsafe_compat_kind(kind) {
        return Ok(KindFilter {
            kind: FindingKind::Unsafe,
            family: FamilyFilter::Any,
        });
    }
    if is_executable_compat_kind(kind) {
        return Ok(KindFilter {
            kind: FindingKind::PolicyException,
            family: FamilyFilter::Exact("executable_file"),
        });
    }
    if is_workflow_compat_kind(kind) {
        return Ok(KindFilter {
            kind: FindingKind::PolicyException,
            family: FamilyFilter::Workflow,
        });
    }
    if is_dependency_surface_compat_kind(kind) {
        return Ok(KindFilter {
            kind: FindingKind::PolicyException,
            family: FamilyFilter::Exact("dependency_surface"),
        });
    }
    if is_process_compat_kind(kind) {
        return Ok(KindFilter {
            kind: FindingKind::PolicyException,
            family: FamilyFilter::Exact("process_spawn"),
        });
    }
    if is_network_compat_kind(kind) {
        return Ok(KindFilter {
            kind: FindingKind::PolicyException,
            family: FamilyFilter::Exact("network_destination"),
        });
    }
    Ok(KindFilter {
        kind: FindingKind::from_str(kind)?,
        family: FamilyFilter::Any,
    })
}

pub(crate) fn is_panic_compat_kind(kind: &str) -> bool {
    matches!(
        kind.trim(),
        "panic"
            | "panic-family"
            | "panic_family"
            | "no-panic"
            | "no_panic"
            | "no-panic-baseline"
            | "no_panic_baseline"
    )
}

pub(crate) fn is_no_panic_allowlist_compat_kind(kind: &str) -> bool {
    matches!(
        kind.trim(),
        "no-panic-allowlist" | "no_panic_allowlist" | "panic-allowlist" | "panic_allowlist"
    )
}

pub(crate) fn is_clippy_compat_kind(kind: &str) -> bool {
    matches!(
        kind.trim(),
        "clippy"
            | "clippy-exception"
            | "clippy-exceptions"
            | "clippy_exception"
            | "clippy_exceptions"
            | "lint"
            | "lint-exception"
            | "lint_exception"
            | "lint-suppression"
            | "lint_suppression"
    )
}

pub(crate) fn is_unsafe_compat_kind(kind: &str) -> bool {
    matches!(
        kind.trim(),
        "unsafe" | "unsafe-allowlist" | "unsafe_allowlist" | "unsafe-policy" | "unsafe_policy"
    )
}

pub(crate) fn is_executable_compat_kind(kind: &str) -> bool {
    matches!(
        kind.trim(),
        "executable" | "executable_file" | "executable-file" | "executable-bit" | "exec"
    )
}

pub(crate) fn is_workflow_compat_kind(kind: &str) -> bool {
    matches!(
        kind.trim(),
        "workflow" | "workflows" | "github_workflow" | "github-workflow" | "workflow-action"
    )
}

pub(crate) fn is_dependency_surface_compat_kind(kind: &str) -> bool {
    matches!(
        kind.trim(),
        "dependency"
            | "dependencies"
            | "dependency_surface"
            | "dependency-surface"
            | "dependency-surfaces"
            | "dep-surface"
            | "dep"
    )
}

pub(crate) fn is_process_compat_kind(kind: &str) -> bool {
    matches!(
        kind.trim(),
        "process" | "processes" | "process-policy" | "process_spawn" | "process-spawn" | "proc"
    )
}

pub(crate) fn is_network_compat_kind(kind: &str) -> bool {
    matches!(
        kind.trim(),
        "network" | "net" | "network-policy" | "network_destination" | "network-destination"
    )
}