2019-01-21 14:03:30 -05:00
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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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2019-10-27 11:22:53 -04:00
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use crate::deno_error::{permission_denied_msg, type_error};
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2019-07-10 18:53:48 -04:00
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use crate::flags::DenoFlags;
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2019-07-31 17:11:37 -04:00
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use ansi_term::Style;
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2019-07-10 18:53:48 -04:00
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use deno::ErrBox;
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2019-06-22 12:02:51 -04:00
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use log;
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2019-05-08 19:20:30 -04:00
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use std::collections::HashSet;
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2019-03-18 16:46:23 -04:00
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use std::fmt;
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2019-05-08 19:20:30 -04:00
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use std::path::PathBuf;
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2019-10-22 19:35:43 -04:00
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use std::sync::atomic::{AtomicUsize, Ordering};
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2019-03-18 16:46:23 -04:00
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use std::sync::Arc;
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2019-10-27 11:22:53 -04:00
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use url::Url;
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2019-03-18 16:46:23 -04:00
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2019-06-22 12:02:51 -04:00
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const PERMISSION_EMOJI: &str = "⚠️";
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2019-03-18 16:46:23 -04:00
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/// Tri-state value for storing permission state
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2019-10-27 11:22:53 -04:00
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#[derive(PartialEq)]
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2019-03-18 16:46:23 -04:00
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pub enum PermissionAccessorState {
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Allow = 0,
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Ask = 1,
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Deny = 2,
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}
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impl From<usize> for PermissionAccessorState {
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fn from(val: usize) -> Self {
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match val {
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0 => PermissionAccessorState::Allow,
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1 => PermissionAccessorState::Ask,
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2 => PermissionAccessorState::Deny,
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_ => unreachable!(),
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}
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}
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}
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impl From<bool> for PermissionAccessorState {
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fn from(val: bool) -> Self {
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2019-03-20 18:55:52 -04:00
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if val {
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PermissionAccessorState::Allow
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} else {
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PermissionAccessorState::Ask
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2019-03-18 16:46:23 -04:00
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}
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}
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}
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impl fmt::Display for PermissionAccessorState {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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2019-10-27 11:22:53 -04:00
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PermissionAccessorState::Allow => f.pad("granted"),
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PermissionAccessorState::Ask => f.pad("prompt"),
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PermissionAccessorState::Deny => f.pad("denied"),
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2019-03-18 16:46:23 -04:00
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}
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}
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}
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2019-11-04 10:38:52 -05:00
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#[derive(Clone, Debug)]
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pub struct PermissionAccessor {
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state: Arc<AtomicUsize>,
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}
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impl PermissionAccessor {
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pub fn new(state: PermissionAccessorState) -> Self {
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Self {
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state: Arc::new(AtomicUsize::new(state as usize)),
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}
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}
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pub fn is_allow(&self) -> bool {
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match self.get_state() {
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PermissionAccessorState::Allow => true,
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_ => false,
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}
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}
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/// If the state is "Allow" walk it back to the default "Ask"
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/// Don't do anything if state is "Deny"
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pub fn revoke(&self) {
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if self.is_allow() {
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self.ask();
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}
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}
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pub fn allow(&self) {
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self.set_state(PermissionAccessorState::Allow)
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}
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pub fn ask(&self) {
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self.set_state(PermissionAccessorState::Ask)
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}
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#[inline]
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pub fn get_state(&self) -> PermissionAccessorState {
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self.state.load(Ordering::SeqCst).into()
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}
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fn set_state(&self, state: PermissionAccessorState) {
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self.state.store(state as usize, Ordering::SeqCst)
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}
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}
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impl From<bool> for PermissionAccessor {
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fn from(val: bool) -> Self {
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Self::new(PermissionAccessorState::from(val))
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}
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}
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impl Default for PermissionAccessor {
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fn default() -> Self {
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Self {
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state: Arc::new(AtomicUsize::new(PermissionAccessorState::Ask as usize)),
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}
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}
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}
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2018-10-27 09:11:39 -04:00
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2019-11-04 10:38:52 -05:00
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#[derive(Clone, Debug, Default)]
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2018-10-27 09:11:39 -04:00
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pub struct DenoPermissions {
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2019-10-27 11:22:53 -04:00
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// Keep in sync with cli/js/permissions.ts
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2019-03-18 16:46:23 -04:00
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pub allow_read: PermissionAccessor,
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2019-05-08 19:20:30 -04:00
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pub read_whitelist: Arc<HashSet<String>>,
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pub allow_write: PermissionAccessor,
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2019-05-08 19:20:30 -04:00
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pub write_whitelist: Arc<HashSet<String>>,
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pub allow_net: PermissionAccessor,
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pub net_whitelist: Arc<HashSet<String>>,
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2019-03-18 16:46:23 -04:00
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pub allow_env: PermissionAccessor,
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pub allow_run: PermissionAccessor,
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2019-05-23 12:28:29 -04:00
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pub allow_hrtime: PermissionAccessor,
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2018-10-27 09:11:39 -04:00
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}
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impl DenoPermissions {
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2019-03-01 19:25:50 -05:00
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pub fn from_flags(flags: &DenoFlags) -> Self {
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2018-11-05 01:21:21 -05:00
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Self {
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2019-03-18 16:46:23 -04:00
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allow_read: PermissionAccessor::from(flags.allow_read),
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read_whitelist: Arc::new(flags.read_whitelist.iter().cloned().collect()),
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2019-03-18 16:46:23 -04:00
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allow_write: PermissionAccessor::from(flags.allow_write),
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2019-05-08 19:20:30 -04:00
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write_whitelist: Arc::new(
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flags.write_whitelist.iter().cloned().collect(),
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),
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2019-03-18 16:46:23 -04:00
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allow_net: PermissionAccessor::from(flags.allow_net),
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net_whitelist: Arc::new(flags.net_whitelist.iter().cloned().collect()),
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allow_env: PermissionAccessor::from(flags.allow_env),
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2019-03-18 16:46:23 -04:00
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allow_run: PermissionAccessor::from(flags.allow_run),
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2019-05-23 12:28:29 -04:00
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allow_hrtime: PermissionAccessor::from(flags.allow_hrtime),
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2018-10-27 09:11:39 -04:00
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}
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}
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2019-10-27 11:22:53 -04:00
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/** Checks the permission state and returns the result. */
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fn check_permission_state(
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&self,
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state: PermissionAccessorState,
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msg: &str,
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err_msg: &str,
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) -> Result<(), ErrBox> {
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if state == PermissionAccessorState::Allow {
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self.log_perm_access(msg);
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return Ok(());
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}
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Err(permission_denied_msg(err_msg.to_string()))
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}
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2019-07-10 18:53:48 -04:00
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pub fn check_run(&self) -> Result<(), ErrBox> {
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2019-10-27 11:22:53 -04:00
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self.check_permission_state(
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self.allow_run.get_state(),
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"access to run a subprocess",
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"run again with the --allow-run flag",
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)
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}
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2019-06-22 12:02:51 -04:00
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2019-10-27 11:22:53 -04:00
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fn get_state_read(&self, filename: &Option<&str>) -> PermissionAccessorState {
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if check_path_white_list(filename, &self.read_whitelist) {
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return PermissionAccessorState::Allow;
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2018-11-15 23:07:40 -05:00
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}
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2019-10-27 11:22:53 -04:00
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self.allow_read.get_state()
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2018-11-15 23:07:40 -05:00
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}
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2019-07-10 18:53:48 -04:00
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pub fn check_read(&self, filename: &str) -> Result<(), ErrBox> {
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2019-10-27 11:22:53 -04:00
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self.check_permission_state(
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self.get_state_read(&Some(filename)),
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&format!("read access to \"{}\"", filename),
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"run again with the --allow-read flag",
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)
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}
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fn get_state_write(
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&self,
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filename: &Option<&str>,
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) -> PermissionAccessorState {
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if check_path_white_list(filename, &self.write_whitelist) {
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return PermissionAccessorState::Allow;
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2019-02-08 15:59:38 -05:00
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}
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2019-10-27 11:22:53 -04:00
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self.allow_write.get_state()
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2019-02-08 15:59:38 -05:00
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}
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2019-07-10 18:53:48 -04:00
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pub fn check_write(&self, filename: &str) -> Result<(), ErrBox> {
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2019-10-27 11:22:53 -04:00
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self.check_permission_state(
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self.get_state_write(&Some(filename)),
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&format!("write access to \"{}\"", filename),
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"run again with the --allow-write flag",
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)
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}
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fn get_state_net(
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&self,
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host: &str,
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port: Option<u16>,
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) -> PermissionAccessorState {
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if check_host_and_port_whitelist(host, port, &self.net_whitelist) {
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return PermissionAccessorState::Allow;
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2019-05-08 19:20:30 -04:00
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}
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2019-10-27 11:22:53 -04:00
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self.allow_net.get_state()
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2019-05-08 19:20:30 -04:00
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}
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2019-10-23 10:19:27 -04:00
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pub fn check_net(&self, hostname: &str, port: u16) -> Result<(), ErrBox> {
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2019-10-27 11:22:53 -04:00
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self.check_permission_state(
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self.get_state_net(hostname, Some(port)),
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&format!("network access to \"{}:{}\"", hostname, port),
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"run again with the --allow-net flag",
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)
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2018-10-27 09:11:39 -04:00
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}
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2019-08-13 14:51:15 -04:00
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pub fn check_net_url(&self, url: &url::Url) -> Result<(), ErrBox> {
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2019-10-27 11:22:53 -04:00
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self.check_permission_state(
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self.get_state_net(&format!("{}", url.host().unwrap()), url.port()),
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&format!("network access to \"{}\"", url),
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"run again with the --allow-net flag",
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)
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2019-05-08 19:20:30 -04:00
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}
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2019-07-10 18:53:48 -04:00
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pub fn check_env(&self) -> Result<(), ErrBox> {
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2019-10-27 11:22:53 -04:00
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self.check_permission_state(
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self.allow_env.get_state(),
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"access to environment variables",
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"run again with the --allow-env flag",
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)
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2019-03-13 12:43:47 -04:00
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}
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2019-06-22 12:02:51 -04:00
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fn log_perm_access(&self, message: &str) {
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if log_enabled!(log::Level::Info) {
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eprintln!(
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"{}",
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Style::new()
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.bold()
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.paint(format!("{}️ Granted {}", PERMISSION_EMOJI, message))
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);
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}
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}
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2019-10-27 11:22:53 -04:00
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pub fn get_permission_state(
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&self,
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name: &str,
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url: &Option<&str>,
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path: &Option<&str>,
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) -> Result<PermissionAccessorState, ErrBox> {
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match name {
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"run" => Ok(self.allow_run.get_state()),
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"read" => Ok(self.get_state_read(path)),
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"write" => Ok(self.get_state_write(path)),
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"net" => {
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// If url is not given, then just check the entire net permission
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if url.is_none() {
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return Ok(self.allow_net.get_state());
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}
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let url: &str = url.unwrap();
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// If url is invalid, then throw a TypeError.
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let parsed = Url::parse(url)
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.map_err(|_| type_error(format!("Invalid url: {}", url)))?;
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let state = self
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.get_state_net(&format!("{}", parsed.host().unwrap()), parsed.port());
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Ok(state)
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}
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"env" => Ok(self.allow_env.get_state()),
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"hrtime" => Ok(self.allow_hrtime.get_state()),
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n => Err(type_error(format!("No such permission name: {}", n))),
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}
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2019-04-08 16:22:40 -04:00
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}
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2019-03-18 16:46:23 -04:00
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}
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2019-03-04 11:04:19 -05:00
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2019-05-08 19:20:30 -04:00
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fn check_path_white_list(
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filename: &Option<&str>,
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2019-05-08 19:20:30 -04:00
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white_list: &Arc<HashSet<String>>,
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) -> bool {
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2019-10-27 11:22:53 -04:00
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if filename.is_none() {
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return false;
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}
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let mut path_buf = PathBuf::from(filename.unwrap());
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2019-05-08 19:20:30 -04:00
|
|
|
|
loop {
|
|
|
|
|
if white_list.contains(path_buf.to_str().unwrap()) {
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
if !path_buf.pop() {
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
false
|
|
|
|
|
}
|
|
|
|
|
|
2019-10-27 11:22:53 -04:00
|
|
|
|
fn check_host_and_port_whitelist(
|
|
|
|
|
host: &str,
|
|
|
|
|
port: Option<u16>,
|
|
|
|
|
whitelist: &Arc<HashSet<String>>,
|
|
|
|
|
) -> bool {
|
|
|
|
|
whitelist.contains(host)
|
|
|
|
|
|| (port.is_some()
|
|
|
|
|
&& whitelist.contains(&format!("{}:{}", host, port.unwrap())))
|
|
|
|
|
}
|
|
|
|
|
|
2019-05-08 19:20:30 -04:00
|
|
|
|
#[cfg(test)]
|
|
|
|
|
mod tests {
|
|
|
|
|
use super::*;
|
|
|
|
|
|
|
|
|
|
// Creates vector of strings, Vec<String>
|
|
|
|
|
macro_rules! svec {
|
|
|
|
|
($($x:expr),*) => (vec![$($x.to_string()),*]);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
|
fn check_paths() {
|
|
|
|
|
let whitelist = svec!["/a/specific/dir/name", "/a/specific", "/b/c"];
|
|
|
|
|
|
|
|
|
|
let perms = DenoPermissions::from_flags(&DenoFlags {
|
|
|
|
|
read_whitelist: whitelist.clone(),
|
|
|
|
|
write_whitelist: whitelist.clone(),
|
|
|
|
|
..Default::default()
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
// Inside of /a/specific and /a/specific/dir/name
|
|
|
|
|
assert!(perms.check_read("/a/specific/dir/name").is_ok());
|
|
|
|
|
assert!(perms.check_write("/a/specific/dir/name").is_ok());
|
|
|
|
|
|
|
|
|
|
// Inside of /a/specific but outside of /a/specific/dir/name
|
|
|
|
|
assert!(perms.check_read("/a/specific/dir").is_ok());
|
|
|
|
|
assert!(perms.check_write("/a/specific/dir").is_ok());
|
|
|
|
|
|
|
|
|
|
// Inside of /a/specific and /a/specific/dir/name
|
|
|
|
|
assert!(perms.check_read("/a/specific/dir/name/inner").is_ok());
|
|
|
|
|
assert!(perms.check_write("/a/specific/dir/name/inner").is_ok());
|
|
|
|
|
|
|
|
|
|
// Inside of /a/specific but outside of /a/specific/dir/name
|
|
|
|
|
assert!(perms.check_read("/a/specific/other/dir").is_ok());
|
|
|
|
|
assert!(perms.check_write("/a/specific/other/dir").is_ok());
|
|
|
|
|
|
|
|
|
|
// Exact match with /b/c
|
|
|
|
|
assert!(perms.check_read("/b/c").is_ok());
|
|
|
|
|
assert!(perms.check_write("/b/c").is_ok());
|
|
|
|
|
|
|
|
|
|
// Sub path within /b/c
|
|
|
|
|
assert!(perms.check_read("/b/c/sub/path").is_ok());
|
|
|
|
|
assert!(perms.check_write("/b/c/sub/path").is_ok());
|
|
|
|
|
|
|
|
|
|
// Inside of /b but outside of /b/c
|
|
|
|
|
assert!(perms.check_read("/b/e").is_err());
|
|
|
|
|
assert!(perms.check_write("/b/e").is_err());
|
|
|
|
|
|
|
|
|
|
// Inside of /a but outside of /a/specific
|
|
|
|
|
assert!(perms.check_read("/a/b").is_err());
|
|
|
|
|
assert!(perms.check_write("/a/b").is_err());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#[test]
|
2019-06-24 19:30:11 -04:00
|
|
|
|
fn test_check_net() {
|
2019-05-08 19:20:30 -04:00
|
|
|
|
let perms = DenoPermissions::from_flags(&DenoFlags {
|
|
|
|
|
net_whitelist: svec![
|
|
|
|
|
"localhost",
|
|
|
|
|
"deno.land",
|
|
|
|
|
"github.com:3000",
|
|
|
|
|
"127.0.0.1",
|
|
|
|
|
"172.16.0.2:8000"
|
|
|
|
|
],
|
|
|
|
|
..Default::default()
|
|
|
|
|
});
|
|
|
|
|
|
2019-06-24 19:30:11 -04:00
|
|
|
|
let domain_tests = vec![
|
2019-10-23 10:19:27 -04:00
|
|
|
|
("localhost", 1234, true),
|
|
|
|
|
("deno.land", 0, true),
|
|
|
|
|
("deno.land", 3000, true),
|
|
|
|
|
("deno.lands", 0, false),
|
|
|
|
|
("deno.lands", 3000, false),
|
|
|
|
|
("github.com", 3000, true),
|
|
|
|
|
("github.com", 0, false),
|
|
|
|
|
("github.com", 2000, false),
|
|
|
|
|
("github.net", 3000, false),
|
|
|
|
|
("127.0.0.1", 0, true),
|
|
|
|
|
("127.0.0.1", 3000, true),
|
|
|
|
|
("127.0.0.2", 0, false),
|
|
|
|
|
("127.0.0.2", 3000, false),
|
|
|
|
|
("172.16.0.2", 8000, true),
|
|
|
|
|
("172.16.0.2", 0, false),
|
|
|
|
|
("172.16.0.2", 6000, false),
|
|
|
|
|
("172.16.0.1", 8000, false),
|
2019-06-24 19:30:11 -04:00
|
|
|
|
// Just some random hosts that should err
|
2019-10-23 10:19:27 -04:00
|
|
|
|
("somedomain", 0, false),
|
|
|
|
|
("192.168.0.1", 0, false),
|
2019-06-24 19:30:11 -04:00
|
|
|
|
];
|
|
|
|
|
|
|
|
|
|
let url_tests = vec![
|
|
|
|
|
// Any protocol + port for localhost should be ok, since we don't specify
|
|
|
|
|
("http://localhost", true),
|
|
|
|
|
("https://localhost", true),
|
|
|
|
|
("https://localhost:4443", true),
|
|
|
|
|
("tcp://localhost:5000", true),
|
|
|
|
|
("udp://localhost:6000", true),
|
|
|
|
|
// Correct domain + any port and protocol should be ok incorrect shouldn't
|
|
|
|
|
("https://deno.land/std/example/welcome.ts", true),
|
|
|
|
|
("https://deno.land:3000/std/example/welcome.ts", true),
|
|
|
|
|
("https://deno.lands/std/example/welcome.ts", false),
|
|
|
|
|
("https://deno.lands:3000/std/example/welcome.ts", false),
|
|
|
|
|
// Correct domain + port should be ok all other combinations should err
|
|
|
|
|
("https://github.com:3000/denoland/deno", true),
|
|
|
|
|
("https://github.com/denoland/deno", false),
|
|
|
|
|
("https://github.com:2000/denoland/deno", false),
|
|
|
|
|
("https://github.net:3000/denoland/deno", false),
|
|
|
|
|
// Correct ipv4 address + any port should be ok others should err
|
|
|
|
|
("tcp://127.0.0.1", true),
|
|
|
|
|
("https://127.0.0.1", true),
|
|
|
|
|
("tcp://127.0.0.1:3000", true),
|
|
|
|
|
("https://127.0.0.1:3000", true),
|
|
|
|
|
("tcp://127.0.0.2", false),
|
|
|
|
|
("https://127.0.0.2", false),
|
|
|
|
|
("tcp://127.0.0.2:3000", false),
|
|
|
|
|
("https://127.0.0.2:3000", false),
|
|
|
|
|
// Correct address + port should be ok all other combinations should err
|
|
|
|
|
("tcp://172.16.0.2:8000", true),
|
|
|
|
|
("https://172.16.0.2:8000", true),
|
|
|
|
|
("tcp://172.16.0.2", false),
|
|
|
|
|
("https://172.16.0.2", false),
|
|
|
|
|
("tcp://172.16.0.2:6000", false),
|
|
|
|
|
("https://172.16.0.2:6000", false),
|
|
|
|
|
("tcp://172.16.0.1:8000", false),
|
|
|
|
|
("https://172.16.0.1:8000", false),
|
|
|
|
|
];
|
|
|
|
|
|
|
|
|
|
for (url_str, is_ok) in url_tests.iter() {
|
|
|
|
|
let u = url::Url::parse(url_str).unwrap();
|
2019-08-13 14:51:15 -04:00
|
|
|
|
assert_eq!(*is_ok, perms.check_net_url(&u).is_ok());
|
2019-06-24 19:30:11 -04:00
|
|
|
|
}
|
|
|
|
|
|
2019-10-23 10:19:27 -04:00
|
|
|
|
for (host, port, is_ok) in domain_tests.iter() {
|
|
|
|
|
assert_eq!(*is_ok, perms.check_net(host, *port).is_ok());
|
2019-06-24 19:30:11 -04:00
|
|
|
|
}
|
2019-05-08 19:20:30 -04:00
|
|
|
|
}
|
|
|
|
|
}
|