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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use crate::permissions::parse_sys_kind;use crate::permissions::Permissions;use deno_core::error::custom_error;use deno_core::error::uri_error;use deno_core::error::AnyError;use deno_core::op;use deno_core::url;use deno_core::Extension;use deno_core::OpState;use serde::Deserialize;use std::path::Path;
pub fn init() -> Extension {  Extension::builder()    .ops(vec![      op_query_permission::decl(),      op_revoke_permission::decl(),      op_request_permission::decl(),    ])    .build()}
#[derive(Deserialize)]pub struct PermissionArgs {  name: String,  path: Option<String>,  host: Option<String>,  variable: Option<String>,  kind: Option<String>,  command: Option<String>,}
#[op]pub fn op_query_permission(  state: &mut OpState,  args: PermissionArgs,) -> Result<String, AnyError> {  let permissions = state.borrow::<Permissions>();  let path = args.path.as_deref();  let perm = match args.name.as_ref() {    "read" => permissions.read.query(path.map(Path::new)),    "write" => permissions.write.query(path.map(Path::new)),    "net" => permissions.net.query(      match args.host.as_deref() {        None => None,        Some(h) => Some(parse_host(h)?),      }      .as_ref(),    ),    "env" => permissions.env.query(args.variable.as_deref()),    "sys" => permissions      .sys      .query(args.kind.as_deref().map(parse_sys_kind).transpose()?),    "run" => permissions.run.query(args.command.as_deref()),    "ffi" => permissions.ffi.query(args.path.as_deref().map(Path::new)),    "hrtime" => permissions.hrtime.query(),    n => {      return Err(custom_error(        "ReferenceError",        format!("No such permission name: {}", n),      ))    }  };  Ok(perm.to_string())}
#[op]pub fn op_revoke_permission(  state: &mut OpState,  args: PermissionArgs,) -> Result<String, AnyError> {  let permissions = state.borrow_mut::<Permissions>();  let path = args.path.as_deref();  let perm = match args.name.as_ref() {    "read" => permissions.read.revoke(path.map(Path::new)),    "write" => permissions.write.revoke(path.map(Path::new)),    "net" => permissions.net.revoke(      match args.host.as_deref() {        None => None,        Some(h) => Some(parse_host(h)?),      }      .as_ref(),    ),    "env" => permissions.env.revoke(args.variable.as_deref()),    "sys" => permissions      .sys      .revoke(args.kind.as_deref().map(parse_sys_kind).transpose()?),    "run" => permissions.run.revoke(args.command.as_deref()),    "ffi" => permissions.ffi.revoke(args.path.as_deref().map(Path::new)),    "hrtime" => permissions.hrtime.revoke(),    n => {      return Err(custom_error(        "ReferenceError",        format!("No such permission name: {}", n),      ))    }  };  Ok(perm.to_string())}
#[op]pub fn op_request_permission(  state: &mut OpState,  args: PermissionArgs,) -> Result<String, AnyError> {  let permissions = state.borrow_mut::<Permissions>();  let path = args.path.as_deref();  let perm = match args.name.as_ref() {    "read" => permissions.read.request(path.map(Path::new)),    "write" => permissions.write.request(path.map(Path::new)),    "net" => permissions.net.request(      match args.host.as_deref() {        None => None,        Some(h) => Some(parse_host(h)?),      }      .as_ref(),    ),    "env" => permissions.env.request(args.variable.as_deref()),    "sys" => permissions      .sys      .request(args.kind.as_deref().map(parse_sys_kind).transpose()?),    "run" => permissions.run.request(args.command.as_deref()),    "ffi" => permissions.ffi.request(args.path.as_deref().map(Path::new)),    "hrtime" => permissions.hrtime.request(),    n => {      return Err(custom_error(        "ReferenceError",        format!("No such permission name: {}", n),      ))    }  };  Ok(perm.to_string())}
fn parse_host(host_str: &str) -> Result<(String, Option<u16>), AnyError> {  let url = url::Url::parse(&format!("http://{}/", host_str))    .map_err(|_| uri_error("Invalid host"))?;  if url.path() != "/" {    return Err(uri_error("Invalid host"));  }  let hostname = url.host_str().unwrap();  Ok((hostname.to_string(), url.port()))}