barehttp 0.1.0

Blocking HTTP/1.1 client for no_std + alloc
Documentation 
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

use crate::error::ParseError;
use crate::parser::*;
extern crate alloc;
use alloc::vec::Vec;

#[test]
fn test_response_splitting_crlf_injection_in_reason() {
  let input = b"HTTP/1.1 200 OK\r\nInjected\r\nX-Evil: header\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_err());
}

#[test]
fn test_request_smuggling_conflicting_content_lengths() {
  // RFC 9112 Section 6.3: Duplicate Content-Length headers with different values
  // should be rejected to prevent request smuggling attacks
  let input = b"HTTP/1.1 200 OK\r\nContent-Length: 5\r\nContent-Length: 10\r\n\r\nHelloWorld";
  let result = Response::parse(input);
  assert!(result.is_err(), "Should reject conflicting Content-Length headers");
}

#[test]
fn test_header_injection_null_byte() {
  // RFC 9110 field-content: NUL is forbidden in header values.
  let input = b"HTTP/1.1 200 OK\r\nX-Header: value\x00injected\r\n\r\n";
  let result = Response::parse(input);
  assert!(matches!(result, Err(ParseError::InvalidHeaderValue)), "got {result:?}");
}

#[test]
fn test_negative_content_length_rejected() {
  let input = b"HTTP/1.1 200 OK\r\nContent-Length: -1\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_err());
}

#[test]
fn test_chunked_extension_dos_attack() {
  let mut input = Vec::from(&b"HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n5"[..]);
  for _ in 0..1000 {
    input.extend_from_slice(b";ext=val");
  }
  input.extend_from_slice(b"\r\nHello\r\n0\r\n\r\n");
  let result = Response::parse(&input);
  assert!(result.is_ok());
}

#[test]
fn test_header_name_with_control_chars() {
  let input = b"HTTP/1.1 200 OK\r\nX-\x01Header: value\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_err());
}

#[test]
fn test_bare_cr_in_header_value() {
  let input = b"HTTP/1.1 200 OK\r\nX-Header: val\rue\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_err());
}

#[test]
fn test_multiple_transfer_encoding_headers() {
  let input =
    b"HTTP/1.1 200 OK\r\nTransfer-Encoding: gzip\r\nTransfer-Encoding: chunked\r\n\r\n5\r\nHello\r\n0\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_ok());
}

#[test]
fn test_whitespace_before_header_name() {
  let input = b"HTTP/1.1 200 OK\r\n Content-Type: text/html\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_err());
}

#[test]
fn test_chunked_smuggling_incomplete_chunk() {
  let input = b"HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n5\r\nHello\r\n5\r\nWorld";
  let result = Response::parse(input);
  assert!(result.is_err());
}

#[test]
fn test_unicode_in_reason_phrase() {
  let input = "HTTP/1.1 200 Café\r\n\r\n".as_bytes();
  let result = Response::parse(input);
  assert!(result.is_ok());
}

#[test]
fn test_extremely_large_content_length() {
  let input = b"HTTP/1.1 200 OK\r\nContent-Length: 999999999999999\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_err());
}

#[test]
fn test_header_value_with_embedded_crlf() {
  let input = b"HTTP/1.1 200 OK\r\nX-Header: value\r\ninjected\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_err());
}

#[test]
fn test_chunked_with_negative_size() {
  let input = b"HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n-5\r\nHello\r\n0\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_err());
}

#[test]
fn test_transfer_encoding_identity_not_chunked() {
  let input = b"HTTP/1.1 200 OK\r\nTransfer-Encoding: identity\r\n\r\nPlaintext";
  let result = Response::parse(input);
  assert!(result.is_ok());
}

#[test]
fn test_header_with_vertical_tab() {
  // RFC 9110: VT and other CTLs (except HTAB) are not field-content.
  let input = b"HTTP/1.1 200 OK\r\nX-Header:\x0Bvalue\r\n\r\n";
  let result = Response::parse(input);
  assert!(matches!(result, Err(ParseError::InvalidHeaderValue)), "got {result:?}");
}

#[test]
fn test_header_value_with_del_rejected() {
  let input = b"HTTP/1.1 200 OK\r\nX-Header: va\x7Flue\r\n\r\n";
  let result = Response::parse(input);
  assert!(matches!(result, Err(ParseError::InvalidHeaderValue)), "got {result:?}");
}

#[test]
fn test_chunked_zero_chunk_not_last() {
  // RFC 9112 Section 6.3: Extra data after chunked terminator (0\r\n\r\n)
  // MUST NOT be processed as a separate response
  let input = b"HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n0\r\n\r\n5\r\nHello\r\n0\r\n\r\n";
  let result = Response::parse(input);
  assert!(result.is_err(), "Should reject extra data after chunked terminator");
}

#[test]
fn test_te_and_content_length_conflict() {
  let input = b"HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\nContent-Length: 5\r\n\r\n5\r\nHello\r\n0\r\n\r\n";
  let result = Response::parse(input);
  assert!(matches!(result, Err(ParseError::ConflictingFraming)), "got {result:?}");
}

#[test]
fn test_chunked_not_final_coding() {
  let input = b"HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked, gzip\r\n\r\n5\r\nHello\r\n0\r\n\r\n";
  let result = Response::parse(input);
  assert!(matches!(result, Err(ParseError::ChunkedNotFinal)), "got {result:?}");
}

#[test]
fn test_obs_fold_rejected() {
  let input = b"HTTP/1.1 200 OK\r\nX-Fold: line1\r\n continued\r\n\r\n";
  let result = Response::parse(input);
  assert!(
    matches!(result, Err(ParseError::ObsoleteFoldInHeader)),
    "got {result:?}"
  );
}

#[test]
fn test_invalid_header_name_space() {
  let input = b"HTTP/1.1 200 OK\r\nBad Name: value\r\n\r\n";
  let result = Response::parse(input);
  assert!(matches!(result, Err(ParseError::InvalidHeaderName)));
}

#[test]
fn test_status_line_not_http() {
  let input = b"HTP/1.1 200 OK\r\n\r\n";
  let result = Response::parse(input);
  assert!(matches!(result, Err(ParseError::InvalidHttpVersion)));
}

#[test]
fn test_bare_lf_only_status_still_parses_or_rejects_consistently() {
  // LF-only message framing: either accepted (lenient) or rejected — must not panic.
  let input = b"HTTP/1.1 200 OK\nContent-Length: 0\n\n";
  let _ = Response::parse(input);
}

#[cfg(feature = "gzip")]
#[test]
fn test_truncated_gzip_body_rejected() {
  let input = b"HTTP/1.1 200 OK\r\nContent-Encoding: gzip\r\nContent-Length: 4\r\n\r\n\x1f\x8b\x08\x00";
  let result = Response::parse(input);
  assert!(
    matches!(
      result,
      Err(ParseError::Decompression(crate::error::DecompressError::InvalidInput))
    ),
    "got {result:?}"
  );
}

#[cfg(feature = "gzip")]
#[test]
fn test_corrupt_gzip_body_rejected() {
  let junk = [0xffu8; 32];
  let mut msg = Vec::from(&b"HTTP/1.1 200 OK\r\nContent-Encoding: gzip\r\nContent-Length: 32\r\n\r\n"[..]);
  msg.extend_from_slice(&junk);
  let result = Response::parse(&msg);
  assert!(
    matches!(
      result,
      Err(ParseError::Decompression(crate::error::DecompressError::InvalidInput))
    ),
    "got {result:?}"
  );
}