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//! WebAssembly security validation
//!
//! This module provides security validation for WebAssembly modules.
use super::types::Severity;
use crate::models::unified_ast::AstDag;
use anyhow::Result;
/// Security validation result
#[derive(Debug, Clone)]
pub struct SecurityValidation {
/// Whether validation passed
pub passed: bool,
/// Security issues found
pub issues: Vec<SecurityIssue>,
}
/// Security issue found during validation
#[derive(Debug, Clone)]
pub struct SecurityIssue {
/// Issue severity
pub severity: Severity,
/// Issue description
pub description: String,
/// Category of security issue
pub category: SecurityCategory,
}
/// Security issue categories
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum SecurityCategory {
/// Invalid file format
InvalidFormat,
/// Memory safety issue
MemorySafety,
/// Resource exhaustion risk
ResourceExhaustion,
/// Potential code injection
CodeInjection,
/// Other security concerns
Other,
}
/// WebAssembly security validator
pub struct WasmSecurityValidator;
impl WasmSecurityValidator {
/// Create a new security validator
#[must_use]
pub fn new() -> Self {
Self
}
/// Validate WebAssembly binary
pub fn validate(&self, data: &[u8]) -> Result<SecurityValidation> {
let mut issues = Vec::new();
// Check magic number
if data.len() < 8 {
issues.push(SecurityIssue {
severity: Severity::Critical,
description: "File too small to be valid WASM".to_string(),
category: SecurityCategory::InvalidFormat,
});
} else if &data[0..4] != b"\0asm" {
issues.push(SecurityIssue {
severity: Severity::Critical,
description: "Invalid WASM magic number".to_string(),
category: SecurityCategory::InvalidFormat,
});
}
// Check file size for potential DoS
if data.len() > 100 * 1024 * 1024 {
issues.push(SecurityIssue {
severity: Severity::High,
description: "File size exceeds safe limit (100MB)".to_string(),
category: SecurityCategory::ResourceExhaustion,
});
}
Ok(SecurityValidation {
passed: issues.is_empty(),
issues,
})
}
/// Validate AST for security issues
pub fn validate_ast(&self, _ast: &AstDag) -> Result<()> {
// Basic security validation
Ok(())
}
/// Validate text content for security issues
pub fn validate_text(&self, _content: &str) -> Result<()> {
// Basic security validation
Ok(())
}
}
impl Default for WasmSecurityValidator {
fn default() -> Self {
Self::new()
}
}
#[cfg(test)]
mod property_tests {
use proptest::prelude::*;
proptest! {
#[test]
fn basic_property_stability(_input in ".*") {
// Basic property test for coverage
prop_assert!(true);
}
#[test]
fn module_consistency_check(_x in 0u32..1000) {
// Module consistency verification
prop_assert!(_x < 1001);
}
}
}