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use std::ffi::OsStr;
use std::fmt::{Display, Error as FmtError, Formatter};
use std::fs;
use std::io::Read;
use std::str::from_utf8;
/// Used when call is in send request state.
#[derive(Debug)]
pub enum SendState {
/// Unrecoverable error has occured and call is finished.
Error(crate::Error),
/// How many bytes of body have just been sent.
SentBody(usize),
/// Waiting for body to be provided for sending.
WaitReqBody,
/// Call has switched to receiving state.
Receiving,
/// Request is done, body has been returned or
/// there is no response body.
Done,
/// Nothing yet to return.
Wait,
}
#[derive(Default, Debug)]
pub struct Response {
pub(crate) hdrs: Vec<u8>,
pub status: u16,
pub(crate) ws: bool,
}
impl Response {
pub(crate) fn new() -> Response {
Response {
..Default::default()
}
}
pub fn headers(&self) -> Headers {
let mut raw = [::httparse::EMPTY_HEADER; 32];
let mut out = Headers::new();
{
let mut presp = ::httparse::Response::new(&mut raw);
let _ = presp.parse(&self.hdrs);
}
let mut pos = 0;
for i in 0..raw.len() {
if raw[i].name.len() == 0 {
break;
}
if let Ok(v) = from_utf8(raw[i].value) {
out.headers[pos] = Header::new(raw[i].name, v);
pos += 1;
out.len = pos;
}
}
out
}
}
/// A single header
#[derive(Default, Copy, Clone)]
pub struct Header<'a> {
pub name: &'a str,
pub value: &'a str,
}
impl<'a> Header<'a> {
fn new(n: &'a str, v: &'a str) -> Header<'a> {
Header { name: n, value: v }
}
/// Case insensitive header name comparison
pub fn is(&self, v: &str) -> bool {
self.name.eq_ignore_ascii_case(v)
}
}
impl<'a> Display for Header<'a> {
fn fmt(&self, f: &mut Formatter) -> Result<(), FmtError> {
write!(f, "[ {}: {} ]", self.name, self.value)
}
}
/// Iterator over headers in response
#[derive(Default, Copy, Clone)]
pub struct Headers<'a> {
headers: [Header<'a>; 32],
len: usize,
next: usize,
}
impl<'a> Headers<'a> {
fn new() -> Headers<'a> {
Default::default()
}
}
impl<'a> Display for Headers<'a> {
fn fmt(&self, f: &mut Formatter) -> Result<(), FmtError> {
for h in 0..self.len {
self.headers[h].fmt(f)?;
}
Ok(())
}
}
impl<'a> Iterator for Headers<'a> {
type Item = Header<'a>;
fn next(&mut self) -> Option<Self::Item> {
if self.next == self.len {
return None;
}
self.next += 1;
Some(self.headers[self.next - 1])
}
}
/// Top level configuration for mio_http.
#[derive(Default, Clone)]
pub struct HttpcCfg {
/// Extra root certificates in der format.
pub der_ca: Vec<Vec<u8>>,
/// Extra root certificates in pem format.
pub pem_ca: Vec<Vec<u8>>,
/// Default: 8
///
/// Max 8K buffers to keep cached for subsequent requests.
/// Every request requires 2.
pub cache_buffers: usize,
/// Set DNS servers if library can not easily get them from system (like Android).
/// macOS, iOS and unix with /etc/resolv.conf are supported ATM.
/// If none provided and library can't get them, google DNS servers (8.8.8.8:53, 8.8.4.4:53) will be used.
pub dns_servers: Vec<::std::net::SocketAddr>,
/// SSL Pinning. every element is (hostname, vec![pin1,pin2,..])
///
/// A pin is formatted as: sha256/base64(subjectPublicKeyInfo)
///
/// sha1 is also supported though not recommended.
///
/// mio_httpc will check if public key of server matches any of the pins before
/// sending the HTTP request.
pub pins: Vec<(String, Vec<String>)>,
}
impl HttpcCfg {
pub fn new() -> HttpcCfg {
HttpcCfg {
cache_buffers: 8,
..Default::default()
}
}
/// Will read pem files (extensions .crt or .pem) from path.
/// Path can be to file or folder.
pub fn certs_from_path(path: &str) -> ::std::io::Result<HttpcCfg> {
let mut cfg = HttpcCfg::new();
let certs = [OsStr::new("crt"), OsStr::new("pem")];
let metadata = fs::metadata(path)?;
if metadata.is_file() {
let mut file = fs::File::open(path)?;
let mut contents = Vec::new();
file.read_to_end(&mut contents)?;
cfg.pem_ca.push(contents);
return Ok(cfg);
}
for de in fs::read_dir(path)? {
if de.is_err() {
continue;
}
let de = de.unwrap();
match de.path().extension() {
Some(ex) if certs.contains(&ex) => {
let meta = fs::metadata(de.path())?;
if meta.len() < 1024 * 8 {
let mut file = fs::File::open(de.path())?;
let mut contents = Vec::new();
file.read_to_end(&mut contents)?;
cfg.pem_ca.push(contents);
}
}
_ => {}
}
}
Ok(cfg)
}
}
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub enum ResponseBody {
Sized(usize),
Streamed,
}
impl ::std::fmt::Display for ResponseBody {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
match *self {
ResponseBody::Sized(sz) => write!(f, "ResponseBody::Sized({})", sz),
ResponseBody::Streamed => write!(f, "ResponseBody::Streamed"),
}
}
}
impl ResponseBody {
pub fn is_empty(&self) -> bool {
match *self {
ResponseBody::Sized(n) if n == 0 => true,
_ => false,
}
}
}
/// Used when call is in receive response state.
#[derive(Debug)]
pub enum RecvState {
/// Unrecoverable error has occured and call is finished.
Error(crate::Error),
/// HTTP Response and response body size.
/// If there is a body it will follow, otherwise call is done.
Response(Response, ResponseBody),
/// How many bytes were received.
ReceivedBody(usize),
/// Request is done with body.
DoneWithBody(Vec<u8>),
/// We are not done sending request yet. State may switch back to sending
/// if we are following redirects or need to send request again due to digest auth.
Sending,
/// Request is done, body has been returned or
/// there is no response body.
Done,
/// Nothing yet to return.
Wait,
}
/// Call structure.
#[derive(Debug, PartialEq)] // much fewer derives then ref on purpose. We want a single instance.
pub struct Call {
id: u64,
// two connections possible, we try connecting to
// ipv4 and ipv6 resolved IP. First one to establish connection wins.
con1: usize,
con2: usize,
pub(crate) fixed: bool,
} //(u64, usize);
impl Call {
/// Get a CallRef that matches this call.
pub fn get_ref(&self) -> CallRef {
CallRef(self.id)
}
pub fn simple(self) -> SimpleCall {
SimpleCall::from(self)
}
/// Is CallRef for this call.
pub fn is_ref(&self, r: CallRef) -> bool {
self.id == r.0
}
pub(crate) fn remove_con(&mut self, conid: usize) {
if conid == self.con1 {
self.con1 = usize::max_value();
} else if conid == self.con2 {
self.con2 = usize::max_value();
}
}
pub(crate) fn id(&self) -> u64 {
self.id
}
// pub(crate) fn set_con1(&mut self, con: usize) {
// self.con1 = con;
// }
// pub(crate) fn set_con2(&mut self, con: usize) {
// self.con2 = con;
// }
pub(crate) fn new(id: u64, con1: usize, con2: usize, fixed: bool) -> Call {
Call {
id,
con1,
con2,
fixed,
}
}
pub(crate) fn con(&self) -> usize {
if self.con1 == usize::max_value() {
self.con2
} else {
self.con1
}
}
pub(crate) fn cons(&self) -> [usize; 2] {
[self.con1, self.con2]
}
// keep this functionality internal to lib
pub(crate) fn clone(&self) -> Call {
Call {
id: self.id,
con1: self.con1,
con2: self.con2,
fixed: self.fixed,
}
}
pub(crate) fn empty() -> Call {
Call::new(
u64::max_value(),
usize::max_value(),
usize::max_value(),
false,
)
}
pub(crate) fn is_empty(&self) -> bool {
self.con1 == self.con2 && self.con1 == usize::max_value()
}
// pub(crate) fn call_id(&self) -> u16 {
// ((self.0 >> 16) & 0xFFFF) as u16
// }
// pub(crate) fn con_id(&self) -> u16 {
// (self.0 & 0xFFFF) as u16
// }
// Once call finished it gets invalidated.
// This is a fail-safe so we can destroy Call structure
// from Httpc on error or request finished.
pub(crate) fn invalidate(&mut self) {
// *self = Call::empty();
self.con1 = usize::max_value();
self.con2 = usize::max_value();
}
}
/// Reference to call. Used for matching mio Token with call.
/// If you have lots of calls, you can use this as a key in a HashMap
/// (you probably want fnv HashMap).
#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct CallRef(u64);
impl CallRef {
pub(crate) fn new(call_id: u64) -> CallRef {
CallRef(call_id)
}
}
#[allow(unused_imports)]
mod websocket;
pub use self::websocket::*;
mod simple_call;
pub use self::simple_call::*;
mod builder;
pub use self::builder::*;