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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::{
mem,
ops::{Deref, Div},
};
use neqo_common::{qtrace, Header};
use crate::{
prefix::{
BASE_PREFIX_NEGATIVE, BASE_PREFIX_POSITIVE, HEADER_FIELD_INDEX_DYNAMIC,
HEADER_FIELD_INDEX_DYNAMIC_POST, HEADER_FIELD_INDEX_STATIC,
HEADER_FIELD_LITERAL_NAME_LITERAL, HEADER_FIELD_LITERAL_NAME_REF_DYNAMIC,
HEADER_FIELD_LITERAL_NAME_REF_DYNAMIC_POST, HEADER_FIELD_LITERAL_NAME_REF_STATIC,
NO_PREFIX,
},
qpack_send_buf::QpackData,
reader::{parse_utf8, ReceiverBufferWrapper},
table::HeaderTable,
Error, Res,
};
#[derive(Default, Debug, PartialEq)]
pub struct HeaderEncoder {
buf: QpackData,
base: u64,
use_huffman: bool,
max_entries: u64,
max_dynamic_index_ref: Option<u64>,
}
impl ::std::fmt::Display for HeaderEncoder {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
write!(f, "HeaderEncoder")
}
}
impl HeaderEncoder {
pub fn new(base: u64, use_huffman: bool, max_entries: u64) -> Self {
Self {
buf: QpackData::default(),
base,
use_huffman,
max_entries,
max_dynamic_index_ref: None,
}
}
pub fn len(&self) -> usize {
self.buf.len()
}
pub fn read(&mut self, r: usize) {
self.buf.read(r);
}
pub fn encode_indexed_static(&mut self, index: u64) {
qtrace!([self], "encode static index {}.", index);
self.buf
.encode_prefixed_encoded_int(HEADER_FIELD_INDEX_STATIC, index);
}
fn new_ref(&mut self, index: u64) {
if let Some(r) = self.max_dynamic_index_ref {
if r < index {
self.max_dynamic_index_ref = Some(index);
}
} else {
self.max_dynamic_index_ref = Some(index);
}
}
pub fn encode_indexed_dynamic(&mut self, index: u64) {
qtrace!([self], "encode dynamic index {}.", index);
if index < self.base {
self.buf
.encode_prefixed_encoded_int(HEADER_FIELD_INDEX_DYNAMIC, self.base - index - 1);
} else {
self.buf
.encode_prefixed_encoded_int(HEADER_FIELD_INDEX_DYNAMIC_POST, index - self.base);
}
self.new_ref(index);
}
pub fn encode_literal_with_name_ref(&mut self, is_static: bool, index: u64, value: &[u8]) {
qtrace!(
[self],
"encode literal with name ref - index={}, static={}, value={:x?}",
index,
is_static,
value
);
if is_static {
self.buf
.encode_prefixed_encoded_int(HEADER_FIELD_LITERAL_NAME_REF_STATIC, index);
} else if index < self.base {
self.buf.encode_prefixed_encoded_int(
HEADER_FIELD_LITERAL_NAME_REF_DYNAMIC,
self.base - index - 1,
);
self.new_ref(index);
} else {
self.buf.encode_prefixed_encoded_int(
HEADER_FIELD_LITERAL_NAME_REF_DYNAMIC_POST,
index - self.base,
);
self.new_ref(index);
}
self.buf.encode_literal(self.use_huffman, NO_PREFIX, value);
}
pub fn encode_literal_with_name_literal(&mut self, name: &[u8], value: &[u8]) {
qtrace!(
[self],
"encode literal with name literal - name={:x?}, value={:x?}.",
name,
value
);
self.buf
.encode_literal(self.use_huffman, HEADER_FIELD_LITERAL_NAME_LITERAL, name);
self.buf.encode_literal(self.use_huffman, NO_PREFIX, value);
}
pub fn encode_header_block_prefix(&mut self) {
let tmp = mem::take(&mut self.buf);
let (enc_insert_cnt, delta, prefix) =
self.max_dynamic_index_ref
.map_or((0, self.base, BASE_PREFIX_POSITIVE), |r| {
let req_insert_cnt = r + 1;
if req_insert_cnt <= self.base {
(
req_insert_cnt % (2 * self.max_entries) + 1,
self.base - req_insert_cnt,
BASE_PREFIX_POSITIVE,
)
} else {
(
req_insert_cnt % (2 * self.max_entries) + 1,
req_insert_cnt - self.base - 1,
BASE_PREFIX_NEGATIVE,
)
}
});
qtrace!(
[self],
"encode header block prefix max_dynamic_index_ref={:?}, base={}, enc_insert_cnt={}, delta={}, prefix={:?}.",
self.max_dynamic_index_ref,
self.base,
enc_insert_cnt,
delta,
prefix
);
self.buf
.encode_prefixed_encoded_int(NO_PREFIX, enc_insert_cnt);
self.buf.encode_prefixed_encoded_int(prefix, delta);
self.buf.write_bytes(&tmp);
}
}
impl Deref for HeaderEncoder {
type Target = [u8];
fn deref(&self) -> &Self::Target {
&self.buf
}
}
pub(crate) struct HeaderDecoder<'a> {
buf: ReceiverBufferWrapper<'a>,
base: u64,
req_insert_cnt: u64,
}
impl<'a> ::std::fmt::Display for HeaderDecoder<'a> {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
write!(f, "HeaderDecoder")
}
}
#[derive(Debug, PartialEq, Eq)]
pub enum HeaderDecoderResult {
Blocked(u64),
Headers(Vec<Header>),
}
impl<'a> HeaderDecoder<'a> {
pub fn new(buf: &'a [u8]) -> Self {
Self {
buf: ReceiverBufferWrapper::new(buf),
base: 0,
req_insert_cnt: 0,
}
}
pub fn refers_dynamic_table(
&mut self,
max_entries: u64,
total_num_of_inserts: u64,
) -> Res<bool> {
Error::map_error(
self.read_base(max_entries, total_num_of_inserts),
Error::DecompressionFailed,
)?;
Ok(self.req_insert_cnt != 0)
}
pub fn decode_header_block(
&mut self,
table: &HeaderTable,
max_entries: u64,
total_num_of_inserts: u64,
) -> Res<HeaderDecoderResult> {
Error::map_error(
self.read_base(max_entries, total_num_of_inserts),
Error::DecompressionFailed,
)?;
if table.base() < self.req_insert_cnt {
qtrace!(
[self],
"decoding is blocked, requested inserts count={}",
self.req_insert_cnt
);
return Ok(HeaderDecoderResult::Blocked(self.req_insert_cnt));
}
let mut h: Vec<Header> = Vec::new();
while !self.buf.done() {
let b = Error::map_error(self.buf.peek(), Error::DecompressionFailed)?;
if HEADER_FIELD_INDEX_STATIC.cmp_prefix(b) {
h.push(Error::map_error(
self.read_indexed_static(),
Error::DecompressionFailed,
)?);
} else if HEADER_FIELD_INDEX_DYNAMIC.cmp_prefix(b) {
h.push(Error::map_error(
self.read_indexed_dynamic(table),
Error::DecompressionFailed,
)?);
} else if HEADER_FIELD_INDEX_DYNAMIC_POST.cmp_prefix(b) {
h.push(Error::map_error(
self.read_indexed_dynamic_post(table),
Error::DecompressionFailed,
)?);
} else if HEADER_FIELD_LITERAL_NAME_REF_STATIC.cmp_prefix(b) {
h.push(Error::map_error(
self.read_literal_with_name_ref_static(),
Error::DecompressionFailed,
)?);
} else if HEADER_FIELD_LITERAL_NAME_REF_DYNAMIC.cmp_prefix(b) {
h.push(Error::map_error(
self.read_literal_with_name_ref_dynamic(table),
Error::DecompressionFailed,
)?);
} else if HEADER_FIELD_LITERAL_NAME_LITERAL.cmp_prefix(b) {
h.push(Error::map_error(
self.read_literal_with_name_literal(),
Error::DecompressionFailed,
)?);
} else if HEADER_FIELD_LITERAL_NAME_REF_DYNAMIC_POST.cmp_prefix(b) {
h.push(Error::map_error(
self.read_literal_with_name_ref_dynamic_post(table),
Error::DecompressionFailed,
)?);
} else {
unreachable!("All prefixes are covered");
}
}
qtrace!([self], "done decoding header block.");
Ok(HeaderDecoderResult::Headers(h))
}
pub fn get_req_insert_cnt(&self) -> u64 {
self.req_insert_cnt
}
fn read_base(&mut self, max_entries: u64, total_num_of_inserts: u64) -> Res<()> {
let insert_cnt = self.buf.read_prefixed_int(0)?;
self.req_insert_cnt =
HeaderDecoder::calc_req_insert_cnt(insert_cnt, max_entries, total_num_of_inserts)?;
let s = self.buf.peek()? & 0x80 != 0;
let base_delta = self.buf.read_prefixed_int(1)?;
self.base = if s {
if self.req_insert_cnt <= base_delta {
return Err(Error::DecompressionFailed);
}
self.req_insert_cnt - base_delta - 1
} else {
self.req_insert_cnt
.checked_add(base_delta)
.ok_or(Error::DecompressionFailed)?
};
qtrace!(
[self],
"requested inserts count is {} and base is {}",
self.req_insert_cnt,
self.base
);
Ok(())
}
fn calc_req_insert_cnt(encoded: u64, max_entries: u64, total_num_of_inserts: u64) -> Res<u64> {
if encoded == 0 {
Ok(0)
} else if max_entries == 0 {
Err(Error::DecompressionFailed)
} else {
let full_range = 2 * max_entries;
if encoded > full_range {
return Err(Error::DecompressionFailed);
}
let max_value = total_num_of_inserts + max_entries;
let max_wrapped = max_value.div(full_range) * full_range;
let mut req_insert_cnt = max_wrapped + encoded - 1;
if req_insert_cnt > max_value {
if req_insert_cnt < full_range {
return Err(Error::DecompressionFailed);
}
req_insert_cnt -= full_range;
}
Ok(req_insert_cnt)
}
}
fn read_indexed_static(&mut self) -> Res<Header> {
let index = self
.buf
.read_prefixed_int(HEADER_FIELD_INDEX_STATIC.len())?;
qtrace!([self], "decoder static indexed {}.", index);
let entry = HeaderTable::get_static(index)?;
Ok(Header::new(
parse_utf8(entry.name())?,
parse_utf8(entry.value())?,
))
}
fn read_indexed_dynamic(&mut self, table: &HeaderTable) -> Res<Header> {
let index = self
.buf
.read_prefixed_int(HEADER_FIELD_INDEX_DYNAMIC.len())?;
qtrace!([self], "decoder dynamic indexed {}.", index);
let entry = table.get_dynamic(index, self.base, false)?;
Ok(Header::new(
parse_utf8(entry.name())?,
parse_utf8(entry.value())?,
))
}
fn read_indexed_dynamic_post(&mut self, table: &HeaderTable) -> Res<Header> {
let index = self
.buf
.read_prefixed_int(HEADER_FIELD_INDEX_DYNAMIC_POST.len())?;
qtrace!([self], "decode post-based {}.", index);
let entry = table.get_dynamic(index, self.base, true)?;
Ok(Header::new(
parse_utf8(entry.name())?,
parse_utf8(entry.value())?,
))
}
fn read_literal_with_name_ref_static(&mut self) -> Res<Header> {
qtrace!(
[self],
"read literal with name reference to the static table."
);
let index = self
.buf
.read_prefixed_int(HEADER_FIELD_LITERAL_NAME_REF_STATIC.len())?;
Ok(Header::new(
parse_utf8(HeaderTable::get_static(index)?.name())?,
self.buf.read_literal_from_buffer(0)?,
))
}
fn read_literal_with_name_ref_dynamic(&mut self, table: &HeaderTable) -> Res<Header> {
qtrace!(
[self],
"read literal with name reference ot the dynamic table."
);
let index = self
.buf
.read_prefixed_int(HEADER_FIELD_LITERAL_NAME_REF_DYNAMIC.len())?;
Ok(Header::new(
parse_utf8(table.get_dynamic(index, self.base, false)?.name())?,
self.buf.read_literal_from_buffer(0)?,
))
}
fn read_literal_with_name_ref_dynamic_post(&mut self, table: &HeaderTable) -> Res<Header> {
qtrace!([self], "decoder literal with post-based index.");
let index = self
.buf
.read_prefixed_int(HEADER_FIELD_LITERAL_NAME_REF_DYNAMIC_POST.len())?;
Ok(Header::new(
parse_utf8(table.get_dynamic(index, self.base, true)?.name())?,
self.buf.read_literal_from_buffer(0)?,
))
}
fn read_literal_with_name_literal(&mut self) -> Res<Header> {
qtrace!([self], "decode literal with name literal.");
let name = self
.buf
.read_literal_from_buffer(HEADER_FIELD_LITERAL_NAME_LITERAL.len())?;
Ok(Header::new(name, self.buf.read_literal_from_buffer(0)?))
}
}
#[cfg(test)]
mod tests {
use super::{HeaderDecoder, HeaderDecoderResult, HeaderEncoder, HeaderTable};
use crate::Error;
const INDEX_STATIC_TEST: &[(u64, &[u8], &str, &str)] = &[
(0, &[0x0, 0x0, 0xc0], ":authority", ""),
(10, &[0x0, 0x0, 0xca], "last-modified", ""),
(15, &[0x0, 0x0, 0xcf], ":method", "CONNECT"),
(65, &[0x0, 0x0, 0xff, 0x02], ":status", "206"),
];
const INDEX_DYNAMIC_TEST: &[(u64, &[u8], &str, &str)] = &[
(0, &[0x02, 0x41, 0xbf, 0x2], "header0", "0"),
(10, &[0x0c, 0x37, 0xb7], "header10", "10"),
(15, &[0x11, 0x32, 0xb2], "header15", "15"),
(65, &[0x43, 0x0, 0x80], "header65", "65"),
];
const INDEX_DYNAMIC_POST_TEST: &[(u64, &[u8], &str, &str)] = &[
(0, &[0x02, 0x80, 0x10], "header0", "0"),
(10, &[0x0c, 0x8a, 0x1a], "header10", "10"),
(15, &[0x11, 0x8f, 0x1f, 0x00], "header15", "15"),
(65, &[0x43, 0xc1, 0x1f, 0x32], "header65", "65"),
];
const NAME_REF_STATIC: &[(u64, &[u8], &str, &str)] = &[
(
0,
&[
0x00, 0x00, 0x50, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65, 0x79,
],
":authority",
"custom-key",
),
(
10,
&[
0x00, 0x00, 0x5a, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65, 0x79,
],
"last-modified",
"custom-key",
),
(
15,
&[
0x00, 0x00, 0x5f, 0x00, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79,
],
":method",
"custom-key",
),
(
65,
&[
0x00, 0x00, 0x5f, 0x32, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79,
],
":status",
"custom-key",
),
];
const NAME_REF_DYNAMIC: &[(u64, &[u8], &str, &str)] = &[
(
0,
&[
0x02, 0x41, 0x4f, 0x32, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79,
],
"header0",
"custom-key",
),
(
10,
&[
0x0c, 0x37, 0x4f, 0x28, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79,
],
"header10",
"custom-key",
),
(
15,
&[
0x11, 0x32, 0x4f, 0x23, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79,
],
"header15",
"custom-key",
),
(
65,
&[
0x43, 0x00, 0x40, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65, 0x79,
],
"header65",
"custom-key",
),
];
const NAME_REF_DYNAMIC_POST: &[(u64, &[u8], &str, &str)] = &[
(
0,
&[
0x02, 0x80, 0x00, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65, 0x79,
],
"header0",
"custom-key",
),
(
10,
&[
0x0c, 0x8a, 0x07, 0x03, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79,
],
"header10",
"custom-key",
),
(
15,
&[
0x11, 0x8f, 0x07, 0x08, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79,
],
"header15",
"custom-key",
),
(
65,
&[
0x43, 0xc1, 0x07, 0x3a, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79,
],
"header65",
"custom-key",
),
];
const NAME_REF_DYNAMIC_HUFFMAN: &[(u64, &[u8], &str, &str)] = &[
(
0,
&[
0x02, 0x41, 0x4f, 0x32, 0x88, 0x25, 0xa8, 0x49, 0xe9, 0x5b, 0xa9, 0x7d, 0x7f,
],
"header0",
"custom-key",
),
(
10,
&[
0x0c, 0x37, 0x4f, 0x28, 0x88, 0x25, 0xa8, 0x49, 0xe9, 0x5b, 0xa9, 0x7d, 0x7f,
],
"header10",
"custom-key",
),
(
15,
&[
0x11, 0x32, 0x4f, 0x23, 0x88, 0x25, 0xa8, 0x49, 0xe9, 0x5b, 0xa9, 0x7d, 0x7f,
],
"header15",
"custom-key",
),
(
65,
&[
0x43, 0x00, 0x40, 0x88, 0x25, 0xa8, 0x49, 0xe9, 0x5b, 0xa9, 0x7d, 0x7f,
],
"header65",
"custom-key",
),
];
const VALUE: &[u8] = &[0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65, 0x79];
const LITERAL_LITERAL: &[u8] = &[
0x0, 0x42, 0x27, 0x03, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65, 0x79, 0x0a,
0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65, 0x79,
];
const LITERAL_LITERAL_HUFFMAN: &[u8] = &[
0x0, 0x42, 0x2f, 0x01, 0x25, 0xa8, 0x49, 0xe9, 0x5b, 0xa9, 0x7d, 0x7f, 0x88, 0x25, 0xa8,
0x49, 0xe9, 0x5b, 0xa9, 0x7d, 0x7f,
];
const LITERAL_VALUE: &str = "custom-key";
#[test]
fn test_encode_indexed_static() {
for (index, result, _, _) in INDEX_STATIC_TEST {
let mut encoded_h = HeaderEncoder::new(0, true, 1000);
encoded_h.encode_indexed_static(*index);
encoded_h.encode_header_block_prefix();
assert_eq!(&&*encoded_h, result);
}
}
#[test]
fn test_encode_indexed_dynamic() {
for (index, result, _, _) in INDEX_DYNAMIC_TEST {
let mut encoded_h = HeaderEncoder::new(66, true, 1000);
encoded_h.encode_indexed_dynamic(*index);
encoded_h.encode_header_block_prefix();
assert_eq!(&&*encoded_h, result);
}
}
#[test]
fn test_encode_indexed_dynamic_post() {
for (index, result, _, _) in INDEX_DYNAMIC_POST_TEST {
let mut encoded_h = HeaderEncoder::new(0, true, 1000);
encoded_h.encode_indexed_dynamic(*index);
encoded_h.encode_header_block_prefix();
assert_eq!(&&*encoded_h, result);
}
}
#[test]
fn test_encode_literal_with_name_ref_static() {
for (index, result, _, _) in NAME_REF_STATIC {
let mut encoded_h = HeaderEncoder::new(0, false, 1000);
encoded_h.encode_literal_with_name_ref(true, *index, VALUE);
encoded_h.encode_header_block_prefix();
assert_eq!(&&*encoded_h, result);
}
}
#[test]
fn test_encode_literal_with_name_ref_dynamic() {
for (index, result, _, _) in NAME_REF_DYNAMIC {
let mut encoded_h = HeaderEncoder::new(66, false, 1000);
encoded_h.encode_literal_with_name_ref(false, *index, VALUE);
encoded_h.encode_header_block_prefix();
assert_eq!(&&*encoded_h, result);
}
}
#[test]
fn test_encode_literal_with_name_ref_dynamic_post() {
for (index, result, _, _) in NAME_REF_DYNAMIC_POST {
let mut encoded_h = HeaderEncoder::new(0, false, 1000);
encoded_h.encode_literal_with_name_ref(false, *index, VALUE);
encoded_h.encode_header_block_prefix();
assert_eq!(&&*encoded_h, result);
}
}
#[test]
fn test_encode_literal_with_name_ref_dynamic_huffman() {
for (index, result, _, _) in NAME_REF_DYNAMIC_HUFFMAN {
let mut encoded_h = HeaderEncoder::new(66, true, 1000);
encoded_h.encode_literal_with_name_ref(false, *index, VALUE);
encoded_h.encode_header_block_prefix();
assert_eq!(&&*encoded_h, result);
}
}
#[test]
fn test_encode_literal_with_literal() {
let mut encoded_h = HeaderEncoder::new(66, false, 1000);
encoded_h.encode_literal_with_name_literal(VALUE, VALUE);
encoded_h.encode_header_block_prefix();
assert_eq!(&*encoded_h, LITERAL_LITERAL);
let mut encoded_h = HeaderEncoder::new(66, true, 1000);
encoded_h.encode_literal_with_name_literal(VALUE, VALUE);
encoded_h.encode_header_block_prefix();
assert_eq!(&*encoded_h, LITERAL_LITERAL_HUFFMAN);
}
#[test]
fn decode_indexed_static() {
for (_, encoded, decoded1, decoded2) in INDEX_STATIC_TEST {
let table = HeaderTable::new(false);
let mut decoder_h = HeaderDecoder::new(encoded);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), *decoded1);
assert_eq!(result[0].value(), *decoded2);
} else {
panic!("No headers");
}
}
}
fn fill_table(table: &mut HeaderTable) {
table.set_capacity(10000).unwrap();
for i in 0..66 {
let mut v = b"header".to_vec();
let mut num = i.to_string().as_bytes().to_vec();
v.append(&mut num);
table.insert(&v[..], i.to_string().as_bytes()).unwrap();
}
}
#[test]
fn decode_indexed_dynamic() {
for (_, encoded, decoded1, decoded2) in INDEX_DYNAMIC_TEST {
let mut table = HeaderTable::new(false);
fill_table(&mut table);
let mut decoder_h = HeaderDecoder::new(encoded);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), *decoded1);
assert_eq!(result[0].value(), *decoded2);
} else {
panic!("No headers");
}
}
}
#[test]
fn decode_indexed_dynamic_post() {
for (_, encoded, decoded1, decoded2) in INDEX_DYNAMIC_POST_TEST {
let mut table = HeaderTable::new(false);
fill_table(&mut table);
let mut decoder_h = HeaderDecoder::new(encoded);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), *decoded1);
assert_eq!(result[0].value(), *decoded2);
} else {
panic!("No headers");
}
}
}
#[test]
fn decode_literal_with_name_ref_static() {
for (_, encoded, decoded1, decoded2) in NAME_REF_STATIC {
let table = HeaderTable::new(false);
let mut decoder_h = HeaderDecoder::new(encoded);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), *decoded1);
assert_eq!(result[0].value(), *decoded2);
} else {
panic!("No headers");
}
}
}
#[test]
fn decode_literal_with_name_ref_dynamic() {
for (_, encoded, decoded1, decoded2) in NAME_REF_DYNAMIC {
let mut table = HeaderTable::new(false);
fill_table(&mut table);
let mut decoder_h = HeaderDecoder::new(encoded);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), *decoded1);
assert_eq!(result[0].value(), *decoded2);
} else {
panic!("No headers");
}
}
}
#[test]
fn decode_literal_with_name_ref_dynamic_post() {
for (_, encoded, decoded1, decoded2) in NAME_REF_DYNAMIC_POST {
let mut table = HeaderTable::new(false);
fill_table(&mut table);
let mut decoder_h = HeaderDecoder::new(encoded);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), *decoded1);
assert_eq!(result[0].value(), *decoded2);
} else {
panic!("No headers");
}
}
}
#[test]
fn decode_literal_with_name_ref_dynamic_huffman() {
for (_, encoded, decoded1, decoded2) in NAME_REF_DYNAMIC_HUFFMAN {
let mut table = HeaderTable::new(false);
fill_table(&mut table);
let mut decoder_h = HeaderDecoder::new(encoded);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), *decoded1);
assert_eq!(result[0].value(), *decoded2);
} else {
panic!("No headers");
}
}
}
#[test]
fn decode_literal_literal() {
let mut table = HeaderTable::new(false);
fill_table(&mut table);
let mut decoder_h = HeaderDecoder::new(LITERAL_LITERAL);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), LITERAL_VALUE);
assert_eq!(result[0].value(), LITERAL_VALUE);
} else {
panic!("No headers");
}
let mut decoder_h = HeaderDecoder::new(LITERAL_LITERAL_HUFFMAN);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), LITERAL_VALUE);
assert_eq!(result[0].value(), LITERAL_VALUE);
} else {
panic!("No headers");
}
}
// Test that we are ignoring N-bit.
#[test]
fn decode_ignore_n_bit() {
const TEST_N_BIT: &[(&[u8], &str, &str)] = &[
(
&[
0x02, 0x41, 0x6f, 0x32, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b,
0x65, 0x79,
],
"header0",
"custom-key",
),
(
&[
0x02, 0x80, 0x08, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79,
],
"header0",
"custom-key",
),
(
&[
0x0, 0x42, 0x37, 0x03, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65,
0x79, 0x0a, 0x63, 0x75, 0x73, 0x74, 0x6f, 0x6d, 0x2d, 0x6b, 0x65, 0x79,
],
"custom-key",
"custom-key",
),
(
&[
0x0, 0x42, 0x3f, 0x01, 0x25, 0xa8, 0x49, 0xe9, 0x5b, 0xa9, 0x7d, 0x7f, 0x88,
0x25, 0xa8, 0x49, 0xe9, 0x5b, 0xa9, 0x7d, 0x7f,
],
"custom-key",
"custom-key",
),
];
for (encoded, decoded1, decoded2) in TEST_N_BIT {
let mut table = HeaderTable::new(false);
fill_table(&mut table);
let mut decoder_h = HeaderDecoder::new(encoded);
if let HeaderDecoderResult::Headers(result) =
decoder_h.decode_header_block(&table, 1000, 0).unwrap()
{
assert_eq!(result.len(), 1);
assert_eq!(result[0].name(), *decoded1);
assert_eq!(result[0].value(), *decoded2);
} else {
panic!("No headers");
}
}
}
/// If the base calculation goes negative, that is an error.
#[test]
fn negative_base() {
let mut table = HeaderTable::new(false);
fill_table(&mut table);
let mut decoder_h = HeaderDecoder::new(&[0x0, 0x87, 0x01, 0x02, 0x03]);
assert_eq!(
Error::DecompressionFailed,
decoder_h.decode_header_block(&table, 1000, 0).unwrap_err()
);
}
/// If the base calculation overflows the largest value we support (`u64::MAX`),
/// then that is an error.
#[test]
fn overflow_base() {
let mut table = HeaderTable::new(false);
fill_table(&mut table);
// A small required insert count is necessary, but we can set the
// base delta to u64::MAX.
let mut decoder_h = HeaderDecoder::new(&[
0xff, 0x01, 0x7f, 0x80, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x02,
0x03,
]);
assert_eq!(
Error::DecompressionFailed,
decoder_h.decode_header_block(&table, 1000, 0).unwrap_err()
);
}
}