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use chrono::{DateTime, Utc, TimeZone};
use std::error::Error;
use std::fmt;
use std::str::FromStr;
use hyper;
pub trait Flow {
fn type_id() -> FlowType;
}
#[derive(Deserialize)]
pub struct JsonError {
pub error: String,
pub error_description: Option<String>,
pub error_uri: Option<String>,
}
pub enum RequestError {
HttpError(hyper::Error),
InvalidClient,
InvalidScope(String),
NegativeServerResponse(String, Option<String>),
}
impl From<JsonError> for RequestError {
fn from(value: JsonError) -> RequestError {
match &*value.error {
"invalid_client" => RequestError::InvalidClient,
"invalid_scope" => {
RequestError::InvalidScope(value.error_description
.unwrap_or("no description provided".to_string()))
}
_ => RequestError::NegativeServerResponse(value.error, value.error_description),
}
}
}
impl fmt::Display for RequestError {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
match *self {
RequestError::HttpError(ref err) => err.fmt(f),
RequestError::InvalidClient => "Invalid Client".fmt(f),
RequestError::InvalidScope(ref scope) => writeln!(f, "Invalid Scope: '{}'", scope),
RequestError::NegativeServerResponse(ref error, ref desc) => {
error.fmt(f)?;
if let &Some(ref desc) = desc {
write!(f, ": {}", desc)?;
}
"\n".fmt(f)
}
}
}
}
#[derive(Debug)]
pub struct StringError {
error: String,
}
impl fmt::Display for StringError {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
self.description().fmt(f)
}
}
impl StringError {
pub fn new(error: String, desc: Option<&String>) -> StringError {
let mut error = error;
if let Some(d) = desc {
error.push_str(": ");
error.push_str(&*d);
}
StringError { error: error }
}
}
impl<'a> From<&'a Error> for StringError {
fn from(err: &'a Error) -> StringError {
StringError::new(err.description().to_string(), None)
}
}
impl From<String> for StringError {
fn from(value: String) -> StringError {
StringError::new(value, None)
}
}
impl Error for StringError {
fn description(&self) -> &str {
&self.error
}
}
#[derive(Clone, PartialEq, Debug)]
pub enum TokenType {
Bearer,
}
impl AsRef<str> for TokenType {
fn as_ref(&self) -> &'static str {
match *self {
TokenType::Bearer => "Bearer",
}
}
}
impl FromStr for TokenType {
type Err = ();
fn from_str(s: &str) -> Result<TokenType, ()> {
match s {
"Bearer" => Ok(TokenType::Bearer),
_ => Err(()),
}
}
}
#[derive(Clone, PartialEq, Debug)]
pub struct Scheme {
pub token_type: TokenType,
pub access_token: String,
}
impl hyper::header::Scheme for Scheme {
fn scheme() -> Option<&'static str> {
None
}
fn fmt_scheme(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{} {}", self.token_type.as_ref(), self.access_token)
}
}
impl FromStr for Scheme {
type Err = &'static str;
fn from_str(s: &str) -> Result<Scheme, &'static str> {
let parts: Vec<&str> = s.split(' ').collect();
if parts.len() != 2 {
return Err("Expected two parts: <token_type> <token>");
}
match <TokenType as FromStr>::from_str(parts[0]) {
Ok(t) => {
Ok(Scheme {
token_type: t,
access_token: parts[1].to_string(),
})
}
Err(_) => Err("Couldn't parse token type"),
}
}
}
#[derive(Clone, PartialEq, Debug, Deserialize, Serialize)]
pub struct Token {
pub access_token: String,
pub refresh_token: String,
pub token_type: String,
pub expires_in: Option<i64>,
pub expires_in_timestamp: Option<i64>,
}
impl Token {
pub fn expired(&self) -> bool {
if self.access_token.len() == 0 {
panic!("called expired() on unset token");
}
self.expiry_date() <= Utc::now()
}
pub fn expiry_date(&self) -> DateTime<Utc> {
Utc.timestamp(self.expires_in_timestamp
.expect("Tokens without an absolute expiry are invalid"),
0)
}
pub fn set_expiry_absolute(&mut self) -> &mut Token {
if self.expires_in_timestamp.is_some() {
assert!(self.expires_in.is_none());
return self;
}
self.expires_in_timestamp = Some(Utc::now().timestamp() + self.expires_in.unwrap());
self.expires_in = None;
self
}
}
#[derive(Clone)]
pub enum FlowType {
Device(String),
InstalledInteractive,
InstalledRedirect(u32),
}
#[derive(Deserialize, Serialize, Clone, Default)]
pub struct ApplicationSecret {
pub client_id: String,
pub client_secret: String,
pub token_uri: String,
pub auth_uri: String,
pub redirect_uris: Vec<String>,
pub project_id: Option<String>,
pub client_email: Option<String>,
pub auth_provider_x509_cert_url: Option<String>,
pub client_x509_cert_url: Option<String>,
}
#[derive(Deserialize, Serialize, Default)]
pub struct ConsoleApplicationSecret {
pub web: Option<ApplicationSecret>,
pub installed: Option<ApplicationSecret>,
}
#[cfg(test)]
pub mod tests {
use super::*;
use hyper;
pub const SECRET: &'static str =
"{\"installed\":{\"auth_uri\":\"https://accounts.google.com/o/oauth2/auth\",\
\"client_secret\":\"UqkDJd5RFwnHoiG5x5Rub8SI\",\"token_uri\":\"https://accounts.google.\
com/o/oauth2/token\",\"client_email\":\"\",\"redirect_uris\":[\"urn:ietf:wg:oauth:2.0:\
oob\",\"oob\"],\"client_x509_cert_url\":\"\",\"client_id\":\
\"14070749909-vgip2f1okm7bkvajhi9jugan6126io9v.apps.googleusercontent.com\",\
\"auth_provider_x509_cert_url\":\"https://www.googleapis.com/oauth2/v1/certs\"}}";
#[test]
fn console_secret() {
use serde_json as json;
match json::from_str::<ConsoleApplicationSecret>(SECRET) {
Ok(s) => assert!(s.installed.is_some() && s.web.is_none()),
Err(err) => panic!(err),
}
}
#[test]
fn schema() {
let s = Scheme {
token_type: TokenType::Bearer,
access_token: "foo".to_string(),
};
let mut headers = hyper::header::Headers::new();
headers.set(hyper::header::Authorization(s));
assert_eq!(headers.to_string(),
"Authorization: Bearer foo\r\n".to_string());
}
#[test]
fn parse_schema() {
let auth: hyper::header::Authorization<Scheme> =
hyper::header::Header::parse_header(&[b"Bearer foo".to_vec()]).unwrap();
assert_eq!(auth.0.token_type, TokenType::Bearer);
assert_eq!(auth.0.access_token, "foo".to_string());
}
}