1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250
use bytes::Buf; use futures::future::TryFutureExt; use futures::future::{BoxFuture, FutureExt}; use hyper::body::HttpBody; use hyper::client::*; use hyper::http::StatusCode; use hyper::{Body, Request, Response, Uri}; use hyper_rustls::HttpsConnector; use mime::Mime; use rvstruct::ValueStruct; use slack_morphism::errors::*; use slack_morphism::signature_verifier::SlackEventAbsentSignatureError; use slack_morphism::signature_verifier::SlackEventSignatureVerifier; use slack_morphism::{ClientResult, SlackApiToken, SlackClientHttpConnector, SlackEnvelopeMessage}; use slack_morphism_models::{SlackClientId, SlackClientSecret}; use std::collections::HashMap; use std::io::Read; use url::Url; #[derive(Clone, Debug)] pub struct SlackClientHyperConnector { hyper_connector: Client<HttpsConnector<HttpConnector>>, } impl SlackClientHyperConnector { pub fn new() -> Self { let https_connector = HttpsConnector::with_native_roots(); let http_client = Client::builder().build::<_, hyper::Body>(https_connector); Self { hyper_connector: http_client, } } pub(crate) fn parse_query_params(request: &Request<Body>) -> HashMap<String, String> { request .uri() .query() .map(|v| { url::form_urlencoded::parse(v.as_bytes()) .into_owned() .collect() }) .unwrap_or_else(HashMap::new) } pub(crate) fn hyper_redirect_to( url: &str, ) -> Result<Response<Body>, Box<dyn std::error::Error + Send + Sync>> { Response::builder() .status(hyper::http::StatusCode::FOUND) .header(hyper::header::LOCATION, url) .body(Body::empty()) .map_err(|e| e.into()) } fn setup_token_auth_header( request_builder: hyper::http::request::Builder, token: Option<&SlackApiToken>, ) -> hyper::http::request::Builder { if token.is_none() { request_builder } else { let token_header_value = format!("Bearer {}", token.unwrap().token_value.value()); request_builder.header(hyper::header::AUTHORIZATION, token_header_value) } } pub(crate) fn setup_basic_auth_header( request_builder: hyper::http::request::Builder, username: &str, password: &str, ) -> hyper::http::request::Builder { let header_value = format!( "Basic {}", base64::encode(format!("{}:{}", username, password)) ); request_builder.header(hyper::header::AUTHORIZATION, header_value) } pub(crate) fn create_http_request( url: Url, method: hyper::http::Method, ) -> hyper::http::request::Builder { let uri: Uri = url.as_str().parse().unwrap(); hyper::http::request::Builder::new() .method(method) .uri(uri) .header("accept-charset", "utf-8") } async fn http_body_to_string<T>(body: T) -> ClientResult<String> where T: HttpBody, T::Error: std::error::Error + Sync + Send + 'static, { let http_body = hyper::body::aggregate(body).await?; let mut http_reader = http_body.reader(); let mut http_body_str = String::new(); http_reader.read_to_string(&mut http_body_str)?; Ok(http_body_str) } fn http_response_content_type<RS>(response: &Response<RS>) -> Option<Mime> { let http_headers = response.headers(); http_headers.get(hyper::header::CONTENT_TYPE).map(|hv| { let hvs = hv.to_str().unwrap(); hvs.parse::<Mime>().unwrap() }) } pub(crate) async fn send_webapi_request<RS>(&self, request: Request<Body>) -> ClientResult<RS> where RS: for<'de> serde::de::Deserialize<'de>, { let http_res = self.hyper_connector.request(request).await?; let http_status = http_res.status(); let http_content_type = Self::http_response_content_type(&http_res); let http_body_str = Self::http_body_to_string(http_res).await?; match http_status { StatusCode::OK if http_content_type.iter().all(|response_mime| { response_mime.type_() == mime::APPLICATION && response_mime.subtype() == mime::JSON }) => { let slack_message: SlackEnvelopeMessage = serde_json::from_str(http_body_str.as_str())?; if slack_message.error.is_none() { let decoded_body = serde_json::from_str(http_body_str.as_str())?; Ok(decoded_body) } else { Err(SlackClientError::ApiError( SlackClientApiError::new(slack_message.error.unwrap()) .opt_warnings(slack_message.warnings) .with_http_response_body(http_body_str), ) .into()) } } StatusCode::OK => serde_json::from_str("{}").map_err(|e| e.into()), _ => Err(SlackClientError::HttpError( SlackClientHttpError::new(http_status.as_u16()) .with_http_response_body(http_body_str), ) .into()), } } pub(crate) async fn decode_signed_response( req: Request<Body>, signature_verifier: &SlackEventSignatureVerifier, ) -> ClientResult<String> { let headers = &req.headers().clone(); let req_body = req.into_body(); match ( headers.get(SlackEventSignatureVerifier::SLACK_SIGNED_HASH_HEADER), headers.get(SlackEventSignatureVerifier::SLACK_SIGNED_TIMESTAMP), ) { (Some(received_hash), Some(received_ts)) => { Self::http_body_to_string(req_body) .and_then(|body| async { signature_verifier .verify( &received_hash.to_str().unwrap(), &body, &received_ts.to_str().unwrap(), ) .map(|_| body) .map_err(|e| e.into()) }) .await } _ => Err(Box::new(SlackEventAbsentSignatureError::new())), } } } impl SlackClientHttpConnector for SlackClientHyperConnector { fn http_get_uri<'a, RS>( &'a self, full_uri: Url, token: Option<&'a SlackApiToken>, ) -> BoxFuture<'a, ClientResult<RS>> where RS: for<'de> serde::de::Deserialize<'de> + Send + 'a + Send, { async move { let base_http_request = Self::create_http_request(full_uri, hyper::http::Method::GET); let http_request = Self::setup_token_auth_header(base_http_request, token); let body = self .send_webapi_request(http_request.body(Body::empty())?) .await?; Ok(body) } .boxed() } fn http_get_with_client_secret<'a, RS>( &'a self, full_uri: Url, client_id: &'a SlackClientId, client_secret: &'a SlackClientSecret, ) -> BoxFuture<'a, ClientResult<RS>> where RS: for<'de> serde::de::Deserialize<'de> + Send + 'a + 'a + Send, { async move { let http_request = Self::setup_basic_auth_header( Self::create_http_request(full_uri, hyper::http::Method::GET), &client_id.value(), &client_secret.value(), ) .body(Body::empty())?; self.send_webapi_request(http_request).await } .boxed() } fn http_post_uri<'a, RQ, RS>( &'a self, full_uri: Url, request_body: &'a RQ, token: Option<&'a SlackApiToken>, ) -> BoxFuture<'a, ClientResult<RS>> where RQ: serde::ser::Serialize + Send + Sync, RS: for<'de> serde::de::Deserialize<'de> + Send + 'a + Send + 'a, { async move { let post_json = serde_json::to_string(&request_body)?; let base_http_request = Self::create_http_request(full_uri, hyper::http::Method::POST) .header("content-type", "application/json; charset=utf-8"); let http_request = Self::setup_token_auth_header(base_http_request, token); let response_body = self .send_webapi_request(http_request.body(post_json.into())?) .await?; Ok(response_body) } .boxed() } }