fn apply_inner()

in crates/libs/core/src/types/common/security_credentials/x509_credentials.rs [102:150]
44 lines of code
2 McCabe index (conditional complexity)

    fn apply_inner(
        &self,
        settings_interface: mssf_com::FabricClient::IFabricClientSettings2,
    ) -> crate::Result<()> {
        let allowed_common_names: Box<[PCWSTR]> = self
            .AllowedCommonNames
            .iter()
            .map(WString::as_pcwstr)
            .collect();
        // technically speaking, doesn't need to be null in this case. but being paranoid
        let allowed_common_names_ptr = if allowed_common_names.is_empty() {
            std::ptr::null()
        } else {
            allowed_common_names.as_ptr()
        };
        let find_type = FABRIC_X509_FIND_TYPE::from(&self.FindType);
        let find_value = match &self.FindType {
            FabricX509FindType::FindByExtension { extension } => extension.as_pcwstr(),
            FabricX509FindType::FindBySubjectName { subject_name } => subject_name.as_pcwstr(),
            FabricX509FindType::FindByThumbprint { thumbprint } => thumbprint.as_pcwstr(),
        }
        .as_ptr() as *mut c_void;
        let store_location = FABRIC_X509_STORE_LOCATION::from(self.StoreLocation);
        let store_name = self.StoreName.as_pcwstr();
        let protection_level = FABRIC_PROTECTION_LEVEL::from(self.ProtectionLevel);

        let mut value = FABRIC_X509_CREDENTIALS {
            AllowedCommonNameCount: u32::try_from(allowed_common_names.len()).unwrap(),
            AllowedCommonNames: allowed_common_names_ptr,
            FindType: find_type,
            FindValue: find_value,
            StoreLocation: store_location,
            StoreName: store_name,
            ProtectionLevel: protection_level,
            // TODO: extensions
            Reserved: std::ptr::null_mut(),
        };
        let security_credentials = FABRIC_SECURITY_CREDENTIALS {
            Kind: FABRIC_SECURITY_CREDENTIAL_KIND_X509,
            Value: addr_of_mut!(value) as *mut c_void,
        };

        // SAFETY: COM interop. SetSecurityCredentials does not retain reference to the passed in data after function returns.
        let result = unsafe { settings_interface.SetSecurityCredentials(&security_credentials) }
            .map_err(crate::Error::from);
        #[cfg(miri)] // TODO: investigate what's wrong with windows_core::implement drop implement.
        Box::leak(Box::new(settings_interface));
        result
    }