/src/nss/cpputil/tls_parser.cc
Line | Count | Source (jump to first uncovered line) |
1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
5 | | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #include "tls_parser.h" |
8 | | |
9 | | namespace nss_test { |
10 | | |
11 | 0 | bool TlsParser::Read(uint8_t* val) { |
12 | 0 | if (remaining() < 1) { |
13 | 0 | return false; |
14 | 0 | } |
15 | 0 | *val = *ptr(); |
16 | 0 | consume(1); |
17 | 0 | return true; |
18 | 0 | } |
19 | | |
20 | 0 | bool TlsParser::Read(uint32_t* val, size_t size) { |
21 | 0 | if (size > sizeof(uint32_t)) { |
22 | 0 | return false; |
23 | 0 | } |
24 | | |
25 | 0 | uint32_t v = 0; |
26 | 0 | for (size_t i = 0; i < size; ++i) { |
27 | 0 | uint8_t tmp; |
28 | 0 | if (!Read(&tmp)) { |
29 | 0 | return false; |
30 | 0 | } |
31 | | |
32 | 0 | v = (v << 8) | tmp; |
33 | 0 | } |
34 | | |
35 | 0 | *val = v; |
36 | 0 | return true; |
37 | 0 | } |
38 | | |
39 | 0 | bool TlsParser::Read(DataBuffer* val, size_t len) { |
40 | 0 | if (remaining() < len) { |
41 | 0 | return false; |
42 | 0 | } |
43 | | |
44 | 0 | val->Assign(ptr(), len); |
45 | 0 | consume(len); |
46 | 0 | return true; |
47 | 0 | } |
48 | | |
49 | 0 | bool TlsParser::ReadFromMark(DataBuffer* val, size_t len, size_t mark) { |
50 | 0 | auto saved = offset_; |
51 | 0 | offset_ = mark; |
52 | |
|
53 | 0 | if (remaining() < len) { |
54 | 0 | offset_ = saved; |
55 | 0 | return false; |
56 | 0 | } |
57 | | |
58 | 0 | val->Assign(ptr(), len); |
59 | |
|
60 | 0 | offset_ = saved; |
61 | 0 | return true; |
62 | 0 | } |
63 | | |
64 | 0 | bool TlsParser::ReadVariable(DataBuffer* val, size_t len_size) { |
65 | 0 | uint32_t len; |
66 | 0 | if (!Read(&len, len_size)) { |
67 | 0 | return false; |
68 | 0 | } |
69 | 0 | return Read(val, len); |
70 | 0 | } |
71 | | |
72 | 0 | bool TlsParser::Skip(size_t len) { |
73 | 0 | if (len > remaining()) { |
74 | 0 | return false; |
75 | 0 | } |
76 | 0 | consume(len); |
77 | 0 | return true; |
78 | 0 | } |
79 | | |
80 | 0 | bool TlsParser::SkipVariable(size_t len_size) { |
81 | 0 | uint32_t len; |
82 | 0 | if (!Read(&len, len_size)) { |
83 | 0 | return false; |
84 | 0 | } |
85 | 0 | return Skip(len); |
86 | 0 | } |
87 | | |
88 | | } // namespace nss_test |