| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/CPPAlliance/http_proto | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_HTTP_PROTO_DETAIL_HEADER_HPP | ||
| 11 | #define BOOST_HTTP_PROTO_DETAIL_HEADER_HPP | ||
| 12 | |||
| 13 | #include <boost/http_proto/detail/config.hpp> | ||
| 14 | #include <boost/http_proto/error.hpp> | ||
| 15 | #include <boost/http_proto/field.hpp> | ||
| 16 | #include <boost/http_proto/metadata.hpp> | ||
| 17 | #include <boost/http_proto/method.hpp> | ||
| 18 | #include <boost/http_proto/status.hpp> | ||
| 19 | #include <boost/http_proto/string_view.hpp> | ||
| 20 | #include <boost/http_proto/version.hpp> | ||
| 21 | #include <boost/assert.hpp> | ||
| 22 | #include <cstdint> | ||
| 23 | #include <type_traits> | ||
| 24 | |||
| 25 | namespace boost { | ||
| 26 | namespace http_proto { | ||
| 27 | |||
| 28 | class fields_base; | ||
| 29 | |||
| 30 | namespace detail { | ||
| 31 | |||
| 32 | enum kind : unsigned char | ||
| 33 | { | ||
| 34 | fields = 0, | ||
| 35 | request, | ||
| 36 | response, | ||
| 37 | }; | ||
| 38 | |||
| 39 | struct empty | ||
| 40 | { | ||
| 41 | kind param; | ||
| 42 | }; | ||
| 43 | |||
| 44 | struct header | ||
| 45 | { | ||
| 46 | // this field lookup table is | ||
| 47 | // stored at the end of the | ||
| 48 | // allocated buffer, in | ||
| 49 | // reverse order. | ||
| 50 | struct entry | ||
| 51 | { | ||
| 52 | off_t np; // name pos | ||
| 53 | off_t nn; // name size | ||
| 54 | off_t vp; // value pos | ||
| 55 | off_t vn; // value size | ||
| 56 | field id; | ||
| 57 | |||
| 58 | entry operator+( | ||
| 59 | std::size_t dv) const noexcept; | ||
| 60 | entry operator-( | ||
| 61 | std::size_t dv) const noexcept; | ||
| 62 | }; | ||
| 63 | |||
| 64 | struct table | ||
| 65 | { | ||
| 66 | explicit | ||
| 67 | 3579 | table( | |
| 68 | void* end) noexcept | ||
| 69 | 3579 | : p_(reinterpret_cast< | |
| 70 | 3579 | entry*>(end)) | |
| 71 | { | ||
| 72 | 3579 | } | |
| 73 | |||
| 74 | entry& | ||
| 75 | 3608 | operator[]( | |
| 76 | std::size_t i) const noexcept | ||
| 77 | { | ||
| 78 | 3608 | return p_[-1 * ( | |
| 79 | 3608 | static_cast< | |
| 80 | 3608 | long>(i) + 1)]; | |
| 81 | } | ||
| 82 | |||
| 83 | private: | ||
| 84 | entry* p_; | ||
| 85 | }; | ||
| 86 | |||
| 87 | struct fld_t | ||
| 88 | { | ||
| 89 | }; | ||
| 90 | |||
| 91 | struct req_t | ||
| 92 | { | ||
| 93 | off_t method_len; | ||
| 94 | off_t target_len; | ||
| 95 | http_proto::method method; | ||
| 96 | }; | ||
| 97 | |||
| 98 | struct res_t | ||
| 99 | { | ||
| 100 | unsigned short status_int; | ||
| 101 | http_proto::status status; | ||
| 102 | }; | ||
| 103 | |||
| 104 | //-------------------------------------------- | ||
| 105 | |||
| 106 | detail::kind kind; | ||
| 107 | char const* cbuf = nullptr; | ||
| 108 | char* buf = nullptr; | ||
| 109 | std::size_t cap = 0; | ||
| 110 | |||
| 111 | off_t size = 0; | ||
| 112 | off_t count = 0; | ||
| 113 | off_t prefix = 0; | ||
| 114 | |||
| 115 | http_proto::version version = | ||
| 116 | http_proto::version::http_1_1; | ||
| 117 | metadata md; | ||
| 118 | |||
| 119 | union | ||
| 120 | { | ||
| 121 | fld_t fld; | ||
| 122 | req_t req; | ||
| 123 | res_t res; | ||
| 124 | }; | ||
| 125 | |||
| 126 | private: | ||
| 127 | struct fields_tag {}; | ||
| 128 | struct request_tag {}; | ||
| 129 | struct response_tag {}; | ||
| 130 | |||
| 131 | constexpr header(fields_tag) noexcept; | ||
| 132 | constexpr header(request_tag) noexcept; | ||
| 133 | constexpr header(response_tag) noexcept; | ||
| 134 | |||
| 135 | public: | ||
| 136 | // in fields_base.hpp | ||
| 137 | static header& get( | ||
| 138 | fields_base& f) noexcept; | ||
| 139 | |||
| 140 | BOOST_HTTP_PROTO_DECL | ||
| 141 | static | ||
| 142 | header const* | ||
| 143 | get_default(detail::kind k) noexcept; | ||
| 144 | |||
| 145 | // called from parser | ||
| 146 | explicit | ||
| 147 | header(empty) noexcept; | ||
| 148 | |||
| 149 | BOOST_HTTP_PROTO_DECL | ||
| 150 | header(detail::kind) noexcept; | ||
| 151 | |||
| 152 | BOOST_HTTP_PROTO_DECL | ||
| 153 | void swap(header&) noexcept; | ||
| 154 | |||
| 155 | BOOST_HTTP_PROTO_DECL | ||
| 156 | bool keep_alive() const noexcept; | ||
| 157 | |||
| 158 | static | ||
| 159 | std::size_t | ||
| 160 | bytes_needed( | ||
| 161 | std::size_t size, | ||
| 162 | std::size_t count) noexcept; | ||
| 163 | |||
| 164 | table tab() const noexcept; | ||
| 165 | entry* tab_() const noexcept; | ||
| 166 | bool is_default() const noexcept; | ||
| 167 | std::size_t find(field) const noexcept; | ||
| 168 | std::size_t find(string_view) const noexcept; | ||
| 169 | void copy_table(void*, std::size_t) const noexcept; | ||
| 170 | void copy_table(void*) const noexcept; | ||
| 171 | void assign_to(header&) const noexcept; | ||
| 172 | |||
| 173 | // | ||
| 174 | // metadata | ||
| 175 | // | ||
| 176 | |||
| 177 | bool is_special(field) const noexcept; | ||
| 178 | std::size_t maybe_count(field) const noexcept; | ||
| 179 | |||
| 180 | void on_start_line(); | ||
| 181 | |||
| 182 | void on_insert(field, string_view); | ||
| 183 | void on_erase(field); | ||
| 184 | |||
| 185 | void on_insert_connection(string_view); | ||
| 186 | void on_insert_content_length(string_view); | ||
| 187 | void on_insert_expect(string_view); | ||
| 188 | void on_insert_transfer_encoding(); | ||
| 189 | void on_insert_upgrade(string_view); | ||
| 190 | |||
| 191 | void on_erase_connection(); | ||
| 192 | void on_erase_content_length(); | ||
| 193 | void on_erase_expect(); | ||
| 194 | void on_erase_transfer_encoding(); | ||
| 195 | void on_erase_upgrade(); | ||
| 196 | |||
| 197 | void on_erase_all(field); | ||
| 198 | |||
| 199 | void update_payload() noexcept; | ||
| 200 | |||
| 201 | // | ||
| 202 | // parsing | ||
| 203 | // | ||
| 204 | |||
| 205 | struct config | ||
| 206 | { | ||
| 207 | std::size_t headers_limit = | ||
| 208 | BOOST_HTTP_PROTO_MAX_HEADER; | ||
| 209 | std::size_t start_line_limit = | ||
| 210 | BOOST_HTTP_PROTO_MAX_HEADER; | ||
| 211 | std::size_t field_size_limit = | ||
| 212 | BOOST_HTTP_PROTO_MAX_HEADER; | ||
| 213 | std::size_t fields_limit = | ||
| 214 | (unsigned short)(-1); | ||
| 215 | |||
| 216 | // VFALCO plus filtering state | ||
| 217 | }; | ||
| 218 | |||
| 219 | static std::size_t count_crlf( | ||
| 220 | string_view s) noexcept; | ||
| 221 | |||
| 222 | BOOST_HTTP_PROTO_DECL | ||
| 223 | void | ||
| 224 | parse( | ||
| 225 | config&, | ||
| 226 | std::size_t, | ||
| 227 | error_code&) noexcept; | ||
| 228 | }; | ||
| 229 | |||
| 230 | //------------------------------------------------ | ||
| 231 | |||
| 232 | |||
| 233 | } // detail | ||
| 234 | } // http_proto | ||
| 235 | } // boost | ||
| 236 | |||
| 237 | #endif | ||
| 238 |