mirror of
https://github.com/denoland/deno.git
synced 2024-12-22 07:14:47 -05:00
refactor(permissions): factor out PermissionPrompter trait, add callbacks (#16975)
This commit refactors several things in "runtime/permissions" module: - splits it into "mod.rs" and "prompter.rs" - adds "PermissionPrompter" trait with two implementations: * "TtyPrompter" * "TestPrompter" - adds "before" and "after" prompt callback which can be used to hide progress bar in the CLI (to be done in a follow up) - "permissions_prompt" API returns "PromptResponse" enum, instead of a boolean; this allows to add "allow all"/"deny all" functionality for the prompt
This commit is contained in:
Bartek Iwańczuk
GitHub
parent
59dedf217f
commit
7b212bc574
2 changed files with 419 additions and 297 deletions
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@ -6,8 +6,6 @@ use deno_core::error::custom_error;
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use deno_core::error::type_error;
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use deno_core::error::uri_error;
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use deno_core::error::AnyError;
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#[cfg(test)]
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use deno_core::parking_lot::Mutex;
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use deno_core::serde::de;
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use deno_core::serde::Deserialize;
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use deno_core::serde::Deserializer;
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@ -24,12 +22,14 @@ use std::hash::Hash;
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use std::path::{Path, PathBuf};
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use std::str::FromStr;
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use std::string::ToString;
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#[cfg(test)]
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use std::sync::atomic::AtomicBool;
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#[cfg(test)]
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use std::sync::atomic::Ordering;
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const PERMISSION_EMOJI: &str = "⚠️";
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mod prompter;
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use prompter::permission_prompt;
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use prompter::PromptResponse;
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use prompter::PERMISSION_EMOJI;
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pub use prompter::set_prompt_callbacks;
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pub use prompter::PromptCallback;
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static DEBUG_LOG_ENABLED: Lazy<bool> =
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Lazy::new(|| log::log_enabled!(log::Level::Debug));
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@ -110,7 +110,7 @@ impl PermissionState {
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name,
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info().map_or(String::new(), |info| { format!(" to {}", info) }),
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);
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if permission_prompt(&msg, name, api_name) {
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if PromptResponse::Allow == permission_prompt(&msg, name, api_name) {
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Self::log_perm_access(name, info);
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(Ok(()), true)
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} else {
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@ -153,11 +153,13 @@ impl UnitPermission {
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pub fn request(&mut self) -> PermissionState {
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if self.state == PermissionState::Prompt {
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if permission_prompt(
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&format!("access to {}", self.description),
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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&format!("access to {}", self.description),
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.state = PermissionState::Granted;
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} else {
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self.state = PermissionState::Denied;
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@ -352,11 +354,13 @@ impl UnaryPermission<ReadDescriptor> {
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let (resolved_path, display_path) = resolved_and_display_path(path);
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let state = self.query(Some(&resolved_path));
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if state == PermissionState::Prompt {
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if permission_prompt(
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&format!("read access to \"{}\"", display_path.display()),
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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&format!("read access to \"{}\"", display_path.display()),
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.insert(ReadDescriptor(resolved_path));
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PermissionState::Granted
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} else {
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@ -373,11 +377,13 @@ impl UnaryPermission<ReadDescriptor> {
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} else {
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let state = self.query(None);
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if state == PermissionState::Prompt {
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if permission_prompt(
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"read access",
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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"read access",
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.clear();
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self.global_state = PermissionState::Granted;
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PermissionState::Granted
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@ -521,11 +527,13 @@ impl UnaryPermission<WriteDescriptor> {
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let (resolved_path, display_path) = resolved_and_display_path(path);
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let state = self.query(Some(&resolved_path));
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if state == PermissionState::Prompt {
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if permission_prompt(
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&format!("write access to \"{}\"", display_path.display()),
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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&format!("write access to \"{}\"", display_path.display()),
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.insert(WriteDescriptor(resolved_path));
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PermissionState::Granted
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} else {
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@ -542,11 +550,13 @@ impl UnaryPermission<WriteDescriptor> {
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} else {
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let state = self.query(None);
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if state == PermissionState::Prompt {
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if permission_prompt(
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"write access",
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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"write access",
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.clear();
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self.global_state = PermissionState::Granted;
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PermissionState::Granted
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@ -672,11 +682,13 @@ impl UnaryPermission<NetDescriptor> {
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let state = self.query(Some(host));
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let host = NetDescriptor::new(&host);
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if state == PermissionState::Prompt {
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if permission_prompt(
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&format!("network access to \"{}\"", host),
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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&format!("network access to \"{}\"", host),
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.insert(host);
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PermissionState::Granted
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} else {
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@ -693,11 +705,13 @@ impl UnaryPermission<NetDescriptor> {
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} else {
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let state = self.query::<&str>(None);
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if state == PermissionState::Prompt {
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if permission_prompt(
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"network access",
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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"network access",
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.clear();
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self.global_state = PermissionState::Granted;
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PermissionState::Granted
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@ -842,11 +856,13 @@ impl UnaryPermission<EnvDescriptor> {
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if let Some(env) = env {
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let state = self.query(Some(env));
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if state == PermissionState::Prompt {
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if permission_prompt(
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&format!("env access to \"{}\"", env),
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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&format!("env access to \"{}\"", env),
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.insert(EnvDescriptor::new(env));
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PermissionState::Granted
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} else {
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@ -863,11 +879,13 @@ impl UnaryPermission<EnvDescriptor> {
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} else {
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let state = self.query(None);
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if state == PermissionState::Prompt {
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if permission_prompt(
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"env access",
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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"env access",
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.clear();
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self.global_state = PermissionState::Granted;
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PermissionState::Granted
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@ -972,11 +990,13 @@ impl UnaryPermission<SysDescriptor> {
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}
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if let Some(kind) = kind {
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let desc = SysDescriptor(kind.to_string());
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if permission_prompt(
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&format!("sys access to \"{}\"", kind),
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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&format!("sys access to \"{}\"", kind),
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.insert(desc);
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PermissionState::Granted
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} else {
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@ -985,11 +1005,13 @@ impl UnaryPermission<SysDescriptor> {
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PermissionState::Denied
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}
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} else {
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if permission_prompt(
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"sys access",
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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"sys access",
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.global_state = PermissionState::Granted;
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} else {
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self.granted_list.clear();
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@ -1091,11 +1113,13 @@ impl UnaryPermission<RunDescriptor> {
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if let Some(cmd) = cmd {
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let state = self.query(Some(cmd));
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if state == PermissionState::Prompt {
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if permission_prompt(
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&format!("run access to \"{}\"", cmd),
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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&format!("run access to \"{}\"", cmd),
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self
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.granted_list
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.insert(RunDescriptor::from_str(cmd).unwrap());
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@ -1118,11 +1142,13 @@ impl UnaryPermission<RunDescriptor> {
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} else {
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let state = self.query(None);
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if state == PermissionState::Prompt {
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if permission_prompt(
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"run access",
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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"run access",
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.clear();
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self.global_state = PermissionState::Granted;
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PermissionState::Granted
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@ -1238,11 +1264,13 @@ impl UnaryPermission<FfiDescriptor> {
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let (resolved_path, display_path) = resolved_and_display_path(path);
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let state = self.query(Some(&resolved_path));
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if state == PermissionState::Prompt {
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if permission_prompt(
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&format!("ffi access to \"{}\"", display_path.display()),
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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&format!("ffi access to \"{}\"", display_path.display()),
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.insert(FfiDescriptor(resolved_path));
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PermissionState::Granted
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} else {
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@ -1259,11 +1287,13 @@ impl UnaryPermission<FfiDescriptor> {
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} else {
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let state = self.query(None);
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if state == PermissionState::Prompt {
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if permission_prompt(
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"ffi access",
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self.name,
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Some("Deno.permissions.query()"),
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) {
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if PromptResponse::Allow
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== permission_prompt(
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"ffi access",
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self.name,
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Some("Deno.permissions.query()"),
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)
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{
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self.granted_list.clear();
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self.global_state = PermissionState::Granted;
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PermissionState::Granted
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@ -2262,225 +2292,12 @@ pub fn create_child_permissions(
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Ok(worker_perms)
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}
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/// Shows the permission prompt and returns the answer according to the user input.
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/// This loops until the user gives the proper input.
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#[cfg(not(test))]
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fn permission_prompt(
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message: &str,
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name: &str,
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api_name: Option<&str>,
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) -> bool {
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if !atty::is(atty::Stream::Stdin) || !atty::is(atty::Stream::Stderr) {
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return false;
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};
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#[cfg(unix)]
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fn clear_stdin() -> Result<(), AnyError> {
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// TODO(bartlomieju):
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#[allow(clippy::undocumented_unsafe_blocks)]
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let r = unsafe { libc::tcflush(0, libc::TCIFLUSH) };
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assert_eq!(r, 0);
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Ok(())
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}
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#[cfg(not(unix))]
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fn clear_stdin() -> Result<(), AnyError> {
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use deno_core::anyhow::bail;
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use winapi::shared::minwindef::TRUE;
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use winapi::shared::minwindef::UINT;
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use winapi::shared::minwindef::WORD;
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use winapi::shared::ntdef::WCHAR;
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use winapi::um::processenv::GetStdHandle;
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use winapi::um::winbase::STD_INPUT_HANDLE;
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use winapi::um::wincon::FlushConsoleInputBuffer;
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use winapi::um::wincon::PeekConsoleInputW;
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use winapi::um::wincon::WriteConsoleInputW;
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use winapi::um::wincontypes::INPUT_RECORD;
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use winapi::um::wincontypes::KEY_EVENT;
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use winapi::um::winnt::HANDLE;
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use winapi::um::winuser::MapVirtualKeyW;
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use winapi::um::winuser::MAPVK_VK_TO_VSC;
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use winapi::um::winuser::VK_RETURN;
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// SAFETY: winapi calls
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unsafe {
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let stdin = GetStdHandle(STD_INPUT_HANDLE);
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// emulate an enter key press to clear any line buffered console characters
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emulate_enter_key_press(stdin)?;
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// read the buffered line or enter key press
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read_stdin_line()?;
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// check if our emulated key press was executed
|
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if is_input_buffer_empty(stdin)? {
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// if so, move the cursor up to prevent a blank line
|
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move_cursor_up()?;
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} else {
|
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// the emulated key press is still pending, so a buffered line was read
|
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// and we can flush the emulated key press
|
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flush_input_buffer(stdin)?;
|
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}
|
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}
|
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|
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return Ok(());
|
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|
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unsafe fn flush_input_buffer(stdin: HANDLE) -> Result<(), AnyError> {
|
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let success = FlushConsoleInputBuffer(stdin);
|
||||
if success != TRUE {
|
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bail!(
|
||||
"Could not flush the console input buffer: {}",
|
||||
std::io::Error::last_os_error()
|
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)
|
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}
|
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Ok(())
|
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}
|
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|
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unsafe fn emulate_enter_key_press(stdin: HANDLE) -> Result<(), AnyError> {
|
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// https://github.com/libuv/libuv/blob/a39009a5a9252a566ca0704d02df8dabc4ce328f/src/win/tty.c#L1121-L1131
|
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let mut input_record: INPUT_RECORD = std::mem::zeroed();
|
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input_record.EventType = KEY_EVENT;
|
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input_record.Event.KeyEvent_mut().bKeyDown = TRUE;
|
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input_record.Event.KeyEvent_mut().wRepeatCount = 1;
|
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input_record.Event.KeyEvent_mut().wVirtualKeyCode = VK_RETURN as WORD;
|
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input_record.Event.KeyEvent_mut().wVirtualScanCode =
|
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MapVirtualKeyW(VK_RETURN as UINT, MAPVK_VK_TO_VSC) as WORD;
|
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*input_record.Event.KeyEvent_mut().uChar.UnicodeChar_mut() =
|
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'\r' as WCHAR;
|
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|
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let mut record_written = 0;
|
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let success =
|
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WriteConsoleInputW(stdin, &input_record, 1, &mut record_written);
|
||||
if success != TRUE {
|
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bail!(
|
||||
"Could not emulate enter key press: {}",
|
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std::io::Error::last_os_error()
|
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);
|
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}
|
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Ok(())
|
||||
}
|
||||
|
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unsafe fn is_input_buffer_empty(stdin: HANDLE) -> Result<bool, AnyError> {
|
||||
let mut buffer = Vec::with_capacity(1);
|
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let mut events_read = 0;
|
||||
let success =
|
||||
PeekConsoleInputW(stdin, buffer.as_mut_ptr(), 1, &mut events_read);
|
||||
if success != TRUE {
|
||||
bail!(
|
||||
"Could not peek the console input buffer: {}",
|
||||
std::io::Error::last_os_error()
|
||||
)
|
||||
}
|
||||
Ok(events_read == 0)
|
||||
}
|
||||
|
||||
fn move_cursor_up() -> Result<(), AnyError> {
|
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use std::io::Write;
|
||||
write!(std::io::stderr(), "\x1B[1A")?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn read_stdin_line() -> Result<(), AnyError> {
|
||||
let mut input = String::new();
|
||||
let stdin = std::io::stdin();
|
||||
stdin.read_line(&mut input)?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
// Clear n-lines in terminal and move cursor to the beginning of the line.
|
||||
fn clear_n_lines(n: usize) {
|
||||
eprint!("\x1B[{}A\x1B[0J", n);
|
||||
}
|
||||
|
||||
// For security reasons we must consume everything in stdin so that previously
|
||||
// buffered data cannot effect the prompt.
|
||||
if let Err(err) = clear_stdin() {
|
||||
eprintln!("Error clearing stdin for permission prompt. {:#}", err);
|
||||
return false; // don't grant permission if this fails
|
||||
}
|
||||
|
||||
// print to stderr so that if stdout is piped this is still displayed.
|
||||
const OPTS: &str = "[y/n] (y = yes, allow; n = no, deny)";
|
||||
eprint!("{} ┌ ", PERMISSION_EMOJI);
|
||||
eprint!("{}", colors::bold("Deno requests "));
|
||||
eprint!("{}", colors::bold(message));
|
||||
eprintln!("{}", colors::bold("."));
|
||||
if let Some(api_name) = api_name {
|
||||
eprintln!(" ├ Requested by `{}` API", api_name);
|
||||
}
|
||||
let msg = format!(
|
||||
" ├ Run again with --allow-{} to bypass this prompt.",
|
||||
name
|
||||
);
|
||||
eprintln!("{}", colors::italic(&msg));
|
||||
eprint!(" └ {}", colors::bold("Allow?"));
|
||||
eprint!(" {} > ", OPTS);
|
||||
loop {
|
||||
let mut input = String::new();
|
||||
let stdin = std::io::stdin();
|
||||
let result = stdin.read_line(&mut input);
|
||||
if result.is_err() {
|
||||
return false;
|
||||
};
|
||||
let ch = match input.chars().next() {
|
||||
None => return false,
|
||||
Some(v) => v,
|
||||
};
|
||||
match ch.to_ascii_lowercase() {
|
||||
'y' => {
|
||||
clear_n_lines(if api_name.is_some() { 4 } else { 3 });
|
||||
let msg = format!("Granted {}.", message);
|
||||
eprintln!("✅ {}", colors::bold(&msg));
|
||||
return true;
|
||||
}
|
||||
'n' => {
|
||||
clear_n_lines(if api_name.is_some() { 4 } else { 3 });
|
||||
let msg = format!("Denied {}.", message);
|
||||
eprintln!("❌ {}", colors::bold(&msg));
|
||||
return false;
|
||||
}
|
||||
_ => {
|
||||
// If we don't get a recognized option try again.
|
||||
clear_n_lines(1);
|
||||
eprint!(" └ {}", colors::bold("Unrecognized option. Allow?"));
|
||||
eprint!(" {} > ", OPTS);
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
// When testing, permission prompt returns the value of STUB_PROMPT_VALUE
|
||||
// which we set from the test functions.
|
||||
#[cfg(test)]
|
||||
fn permission_prompt(
|
||||
_message: &str,
|
||||
_flag: &str,
|
||||
_api_name: Option<&str>,
|
||||
) -> bool {
|
||||
STUB_PROMPT_VALUE.load(Ordering::SeqCst)
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
static STUB_PROMPT_VALUE: AtomicBool = AtomicBool::new(true);
|
||||
|
||||
#[cfg(test)]
|
||||
static PERMISSION_PROMPT_STUB_VALUE_SETTER: Lazy<
|
||||
Mutex<PermissionPromptStubValueSetter>,
|
||||
> = Lazy::new(|| Mutex::new(PermissionPromptStubValueSetter));
|
||||
|
||||
#[cfg(test)]
|
||||
struct PermissionPromptStubValueSetter;
|
||||
|
||||
#[cfg(test)]
|
||||
impl PermissionPromptStubValueSetter {
|
||||
pub fn set(&self, value: bool) {
|
||||
STUB_PROMPT_VALUE.store(value, Ordering::SeqCst);
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use deno_core::resolve_url_or_path;
|
||||
use deno_core::serde_json::json;
|
||||
use prompter::tests::*;
|
||||
|
||||
// Creates vector of strings, Vec<String>
|
||||
macro_rules! svec {
|
||||
|
|
@ -2489,6 +2306,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn check_paths() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let allowlist = vec![
|
||||
PathBuf::from("/a/specific/dir/name"),
|
||||
PathBuf::from("/a/specific"),
|
||||
|
|
@ -2590,6 +2408,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_check_net_with_values() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let mut perms = Permissions::from_options(&PermissionsOptions {
|
||||
allow_net: Some(svec![
|
||||
"localhost",
|
||||
|
|
@ -2633,6 +2452,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_check_net_only_flag() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let mut perms = Permissions::from_options(&PermissionsOptions {
|
||||
allow_net: Some(svec![]), // this means `--allow-net` is present without values following `=` sign
|
||||
..Default::default()
|
||||
|
|
@ -2668,6 +2488,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_check_net_no_flag() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let mut perms = Permissions::from_options(&PermissionsOptions {
|
||||
allow_net: None,
|
||||
..Default::default()
|
||||
|
|
@ -2763,6 +2584,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn check_specifiers() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let read_allowlist = if cfg!(target_os = "windows") {
|
||||
vec![PathBuf::from("C:\\a")]
|
||||
} else {
|
||||
|
|
@ -2807,6 +2629,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn check_invalid_specifiers() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let mut perms = Permissions::allow_all();
|
||||
|
||||
let mut test_cases = vec![];
|
||||
|
|
@ -2827,6 +2650,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_query() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let perms1 = Permissions::allow_all();
|
||||
let perms2 = Permissions {
|
||||
read: UnaryPermission {
|
||||
|
|
@ -2906,6 +2730,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_request() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let mut perms: Permissions = Default::default();
|
||||
#[rustfmt::skip]
|
||||
{
|
||||
|
|
@ -2953,6 +2778,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_revoke() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let mut perms = Permissions {
|
||||
read: UnaryPermission {
|
||||
global_state: PermissionState::Prompt,
|
||||
|
|
@ -3026,6 +2852,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_check() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let mut perms = Permissions {
|
||||
read: Permissions::new_read(&None, true).unwrap(),
|
||||
write: Permissions::new_write(&None, true).unwrap(),
|
||||
|
|
@ -3089,6 +2916,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_check_fail() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let mut perms = Permissions {
|
||||
read: Permissions::new_read(&None, true).unwrap(),
|
||||
write: Permissions::new_write(&None, true).unwrap(),
|
||||
|
|
@ -3169,6 +2997,7 @@ mod tests {
|
|||
#[test]
|
||||
#[cfg(windows)]
|
||||
fn test_env_windows() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let prompt_value = PERMISSION_PROMPT_STUB_VALUE_SETTER.lock();
|
||||
let mut perms = Permissions::allow_all();
|
||||
perms.env = UnaryPermission {
|
||||
|
|
@ -3187,6 +3016,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_deserialize_child_permissions_arg() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
assert_eq!(
|
||||
ChildPermissionsArg::inherit(),
|
||||
ChildPermissionsArg {
|
||||
|
|
@ -3341,6 +3171,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_create_child_permissions() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let mut main_perms = Permissions {
|
||||
env: Permissions::new_env(&Some(vec![]), false).unwrap(),
|
||||
hrtime: Permissions::new_hrtime(true),
|
||||
|
|
@ -3393,6 +3224,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_create_child_permissions_with_prompt() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let prompt_value = PERMISSION_PROMPT_STUB_VALUE_SETTER.lock();
|
||||
let mut main_perms = Permissions::from_options(&PermissionsOptions {
|
||||
prompt: true,
|
||||
|
|
@ -3414,6 +3246,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_create_child_permissions_with_inherited_denied_list() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
let prompt_value = PERMISSION_PROMPT_STUB_VALUE_SETTER.lock();
|
||||
let mut main_perms = Permissions::from_options(&PermissionsOptions {
|
||||
prompt: true,
|
||||
|
|
@ -3432,6 +3265,7 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_handle_empty_value() {
|
||||
set_prompter(Box::new(TestPrompter));
|
||||
assert!(Permissions::new_read(&Some(vec![PathBuf::new()]), false).is_err());
|
||||
assert!(Permissions::new_env(&Some(vec![String::new()]), false).is_err());
|
||||
assert!(Permissions::new_sys(&Some(vec![String::new()]), false).is_err());
|
||||
288
runtime/permissions/prompter.rs
Normal file
288
runtime/permissions/prompter.rs
Normal file
|
|
@ -0,0 +1,288 @@
|
|||
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
|
||||
|
||||
use crate::colors;
|
||||
use deno_core::error::AnyError;
|
||||
use deno_core::parking_lot::Mutex;
|
||||
use once_cell::sync::Lazy;
|
||||
|
||||
pub const PERMISSION_EMOJI: &str = "⚠️";
|
||||
|
||||
#[derive(Debug, Eq, PartialEq)]
|
||||
pub enum PromptResponse {
|
||||
Allow,
|
||||
Deny,
|
||||
}
|
||||
|
||||
static PERMISSION_PROMPTER: Lazy<Mutex<Box<dyn PermissionPrompter>>> =
|
||||
Lazy::new(|| Mutex::new(Box::new(TtyPrompter)));
|
||||
|
||||
static MAYBE_BEFORE_PROMPT_CALLBACK: Lazy<Mutex<Option<PromptCallback>>> =
|
||||
Lazy::new(|| Mutex::new(None));
|
||||
|
||||
static MAYBE_AFTER_PROMPT_CALLBACK: Lazy<Mutex<Option<PromptCallback>>> =
|
||||
Lazy::new(|| Mutex::new(None));
|
||||
|
||||
pub fn permission_prompt(
|
||||
message: &str,
|
||||
flag: &str,
|
||||
api_name: Option<&str>,
|
||||
) -> PromptResponse {
|
||||
if let Some(before_callback) = MAYBE_BEFORE_PROMPT_CALLBACK.lock().as_mut() {
|
||||
before_callback();
|
||||
}
|
||||
let r = PERMISSION_PROMPTER.lock().prompt(message, flag, api_name);
|
||||
if let Some(after_callback) = MAYBE_AFTER_PROMPT_CALLBACK.lock().as_mut() {
|
||||
after_callback();
|
||||
}
|
||||
r
|
||||
}
|
||||
|
||||
pub fn set_prompt_callbacks(
|
||||
before_callback: Option<PromptCallback>,
|
||||
after_callback: Option<PromptCallback>,
|
||||
) {
|
||||
*MAYBE_BEFORE_PROMPT_CALLBACK.lock() = before_callback;
|
||||
*MAYBE_AFTER_PROMPT_CALLBACK.lock() = after_callback;
|
||||
}
|
||||
|
||||
pub type PromptCallback = Box<dyn FnMut() + Send + Sync>;
|
||||
|
||||
pub trait PermissionPrompter: Send + Sync {
|
||||
fn prompt(
|
||||
&mut self,
|
||||
message: &str,
|
||||
name: &str,
|
||||
api_name: Option<&str>,
|
||||
) -> PromptResponse;
|
||||
}
|
||||
|
||||
pub struct TtyPrompter;
|
||||
|
||||
impl PermissionPrompter for TtyPrompter {
|
||||
fn prompt(
|
||||
&mut self,
|
||||
message: &str,
|
||||
name: &str,
|
||||
api_name: Option<&str>,
|
||||
) -> PromptResponse {
|
||||
if !atty::is(atty::Stream::Stdin) || !atty::is(atty::Stream::Stderr) {
|
||||
return PromptResponse::Deny;
|
||||
};
|
||||
|
||||
#[cfg(unix)]
|
||||
fn clear_stdin() -> Result<(), AnyError> {
|
||||
// TODO(bartlomieju):
|
||||
#[allow(clippy::undocumented_unsafe_blocks)]
|
||||
let r = unsafe { libc::tcflush(0, libc::TCIFLUSH) };
|
||||
assert_eq!(r, 0);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[cfg(not(unix))]
|
||||
fn clear_stdin() -> Result<(), AnyError> {
|
||||
use deno_core::anyhow::bail;
|
||||
use winapi::shared::minwindef::TRUE;
|
||||
use winapi::shared::minwindef::UINT;
|
||||
use winapi::shared::minwindef::WORD;
|
||||
use winapi::shared::ntdef::WCHAR;
|
||||
use winapi::um::processenv::GetStdHandle;
|
||||
use winapi::um::winbase::STD_INPUT_HANDLE;
|
||||
use winapi::um::wincon::FlushConsoleInputBuffer;
|
||||
use winapi::um::wincon::PeekConsoleInputW;
|
||||
use winapi::um::wincon::WriteConsoleInputW;
|
||||
use winapi::um::wincontypes::INPUT_RECORD;
|
||||
use winapi::um::wincontypes::KEY_EVENT;
|
||||
use winapi::um::winnt::HANDLE;
|
||||
use winapi::um::winuser::MapVirtualKeyW;
|
||||
use winapi::um::winuser::MAPVK_VK_TO_VSC;
|
||||
use winapi::um::winuser::VK_RETURN;
|
||||
|
||||
// SAFETY: winapi calls
|
||||
unsafe {
|
||||
let stdin = GetStdHandle(STD_INPUT_HANDLE);
|
||||
// emulate an enter key press to clear any line buffered console characters
|
||||
emulate_enter_key_press(stdin)?;
|
||||
// read the buffered line or enter key press
|
||||
read_stdin_line()?;
|
||||
// check if our emulated key press was executed
|
||||
if is_input_buffer_empty(stdin)? {
|
||||
// if so, move the cursor up to prevent a blank line
|
||||
move_cursor_up()?;
|
||||
} else {
|
||||
// the emulated key press is still pending, so a buffered line was read
|
||||
// and we can flush the emulated key press
|
||||
flush_input_buffer(stdin)?;
|
||||
}
|
||||
}
|
||||
|
||||
return Ok(());
|
||||
|
||||
unsafe fn flush_input_buffer(stdin: HANDLE) -> Result<(), AnyError> {
|
||||
let success = FlushConsoleInputBuffer(stdin);
|
||||
if success != TRUE {
|
||||
bail!(
|
||||
"Could not flush the console input buffer: {}",
|
||||
std::io::Error::last_os_error()
|
||||
)
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
unsafe fn emulate_enter_key_press(stdin: HANDLE) -> Result<(), AnyError> {
|
||||
// https://github.com/libuv/libuv/blob/a39009a5a9252a566ca0704d02df8dabc4ce328f/src/win/tty.c#L1121-L1131
|
||||
let mut input_record: INPUT_RECORD = std::mem::zeroed();
|
||||
input_record.EventType = KEY_EVENT;
|
||||
input_record.Event.KeyEvent_mut().bKeyDown = TRUE;
|
||||
input_record.Event.KeyEvent_mut().wRepeatCount = 1;
|
||||
input_record.Event.KeyEvent_mut().wVirtualKeyCode = VK_RETURN as WORD;
|
||||
input_record.Event.KeyEvent_mut().wVirtualScanCode =
|
||||
MapVirtualKeyW(VK_RETURN as UINT, MAPVK_VK_TO_VSC) as WORD;
|
||||
*input_record.Event.KeyEvent_mut().uChar.UnicodeChar_mut() =
|
||||
'\r' as WCHAR;
|
||||
|
||||
let mut record_written = 0;
|
||||
let success =
|
||||
WriteConsoleInputW(stdin, &input_record, 1, &mut record_written);
|
||||
if success != TRUE {
|
||||
bail!(
|
||||
"Could not emulate enter key press: {}",
|
||||
std::io::Error::last_os_error()
|
||||
);
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
unsafe fn is_input_buffer_empty(stdin: HANDLE) -> Result<bool, AnyError> {
|
||||
let mut buffer = Vec::with_capacity(1);
|
||||
let mut events_read = 0;
|
||||
let success =
|
||||
PeekConsoleInputW(stdin, buffer.as_mut_ptr(), 1, &mut events_read);
|
||||
if success != TRUE {
|
||||
bail!(
|
||||
"Could not peek the console input buffer: {}",
|
||||
std::io::Error::last_os_error()
|
||||
)
|
||||
}
|
||||
Ok(events_read == 0)
|
||||
}
|
||||
|
||||
fn move_cursor_up() -> Result<(), AnyError> {
|
||||
use std::io::Write;
|
||||
write!(std::io::stderr(), "\x1B[1A")?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn read_stdin_line() -> Result<(), AnyError> {
|
||||
let mut input = String::new();
|
||||
let stdin = std::io::stdin();
|
||||
stdin.read_line(&mut input)?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
// Clear n-lines in terminal and move cursor to the beginning of the line.
|
||||
fn clear_n_lines(n: usize) {
|
||||
eprint!("\x1B[{}A\x1B[0J", n);
|
||||
}
|
||||
|
||||
// For security reasons we must consume everything in stdin so that previously
|
||||
// buffered data cannot effect the prompt.
|
||||
if let Err(err) = clear_stdin() {
|
||||
eprintln!("Error clearing stdin for permission prompt. {:#}", err);
|
||||
return PromptResponse::Deny; // don't grant permission if this fails
|
||||
}
|
||||
|
||||
// print to stderr so that if stdout is piped this is still displayed.
|
||||
const OPTS: &str = "[y/n] (y = yes, allow; n = no, deny)";
|
||||
eprint!("{} ┌ ", PERMISSION_EMOJI);
|
||||
eprint!("{}", colors::bold("Deno requests "));
|
||||
eprint!("{}", colors::bold(message));
|
||||
eprintln!("{}", colors::bold("."));
|
||||
if let Some(api_name) = api_name {
|
||||
eprintln!(" ├ Requested by `{}` API", api_name);
|
||||
}
|
||||
let msg = format!(
|
||||
" ├ Run again with --allow-{} to bypass this prompt.",
|
||||
name
|
||||
);
|
||||
eprintln!("{}", colors::italic(&msg));
|
||||
eprint!(" └ {}", colors::bold("Allow?"));
|
||||
eprint!(" {} > ", OPTS);
|
||||
let value = loop {
|
||||
let mut input = String::new();
|
||||
let stdin = std::io::stdin();
|
||||
let result = stdin.read_line(&mut input);
|
||||
if result.is_err() {
|
||||
break PromptResponse::Deny;
|
||||
};
|
||||
let ch = match input.chars().next() {
|
||||
None => break PromptResponse::Deny,
|
||||
Some(v) => v,
|
||||
};
|
||||
match ch.to_ascii_lowercase() {
|
||||
'y' => {
|
||||
clear_n_lines(if api_name.is_some() { 4 } else { 3 });
|
||||
let msg = format!("Granted {}.", message);
|
||||
eprintln!("✅ {}", colors::bold(&msg));
|
||||
break PromptResponse::Allow;
|
||||
}
|
||||
'n' => {
|
||||
clear_n_lines(if api_name.is_some() { 4 } else { 3 });
|
||||
let msg = format!("Denied {}.", message);
|
||||
eprintln!("❌ {}", colors::bold(&msg));
|
||||
break PromptResponse::Deny;
|
||||
}
|
||||
_ => {
|
||||
// If we don't get a recognized option try again.
|
||||
clear_n_lines(1);
|
||||
eprint!(" └ {}", colors::bold("Unrecognized option. Allow?"));
|
||||
eprint!(" {} > ", OPTS);
|
||||
}
|
||||
};
|
||||
};
|
||||
|
||||
value
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
pub mod tests {
|
||||
use super::*;
|
||||
use std::sync::atomic::AtomicBool;
|
||||
use std::sync::atomic::Ordering;
|
||||
|
||||
pub struct TestPrompter;
|
||||
|
||||
impl PermissionPrompter for TestPrompter {
|
||||
fn prompt(
|
||||
&mut self,
|
||||
_message: &str,
|
||||
_name: &str,
|
||||
_api_name: Option<&str>,
|
||||
) -> PromptResponse {
|
||||
if STUB_PROMPT_VALUE.load(Ordering::SeqCst) {
|
||||
PromptResponse::Allow
|
||||
} else {
|
||||
PromptResponse::Deny
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static STUB_PROMPT_VALUE: AtomicBool = AtomicBool::new(true);
|
||||
|
||||
pub static PERMISSION_PROMPT_STUB_VALUE_SETTER: Lazy<
|
||||
Mutex<PermissionPromptStubValueSetter>,
|
||||
> = Lazy::new(|| Mutex::new(PermissionPromptStubValueSetter));
|
||||
|
||||
pub struct PermissionPromptStubValueSetter;
|
||||
|
||||
impl PermissionPromptStubValueSetter {
|
||||
pub fn set(&self, value: bool) {
|
||||
STUB_PROMPT_VALUE.store(value, Ordering::SeqCst);
|
||||
}
|
||||
}
|
||||
|
||||
pub fn set_prompter(prompter: Box<dyn PermissionPrompter>) {
|
||||
*PERMISSION_PROMPTER.lock() = prompter;
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue