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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2021 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 | #include <boost/http_proto/message_base.hpp> | ||
| 11 | #include <boost/http_proto/rfc/list_rule.hpp> | ||
| 12 | #include <boost/http_proto/rfc/token_rule.hpp> | ||
| 13 | #include <boost/http_proto/detail/except.hpp> | ||
| 14 | #include "detail/number_string.hpp" | ||
| 15 | #include <boost/url/grammar/parse.hpp> | ||
| 16 | #include <boost/url/grammar/ci_string.hpp> | ||
| 17 | |||
| 18 | namespace boost { | ||
| 19 | namespace http_proto { | ||
| 20 | |||
| 21 | void | ||
| 22 | ✗ | message_base:: | |
| 23 | set_payload_size( | ||
| 24 | std::uint64_t n) | ||
| 25 | { | ||
| 26 | //if(! is_head_response()) | ||
| 27 | if(true) | ||
| 28 | { | ||
| 29 | // comes first for exception safety | ||
| 30 | ✗ | set_content_length(n); | |
| 31 | |||
| 32 | ✗ | set_chunked(false); | |
| 33 | } | ||
| 34 | else | ||
| 35 | { | ||
| 36 | // VFALCO ? | ||
| 37 | } | ||
| 38 | ✗ | } | |
| 39 | |||
| 40 | void | ||
| 41 | ✗ | message_base:: | |
| 42 | set_content_length( | ||
| 43 | std::uint64_t n) | ||
| 44 | { | ||
| 45 | ✗ | set(field::content_length, | |
| 46 | ✗ | detail::number_string(n)); | |
| 47 | ✗ | } | |
| 48 | |||
| 49 | void | ||
| 50 | ✗ | message_base:: | |
| 51 | set_chunked(bool value) | ||
| 52 | { | ||
| 53 | ✗ | if(value) | |
| 54 | { | ||
| 55 | // set chunked | ||
| 56 | ✗ | if(! h_.md.transfer_encoding.is_chunked ) | |
| 57 | { | ||
| 58 | ✗ | append( | |
| 59 | field::transfer_encoding, | ||
| 60 | "chunked"); | ||
| 61 | ✗ | return; | |
| 62 | } | ||
| 63 | } | ||
| 64 | else | ||
| 65 | { | ||
| 66 | // clear chunked | ||
| 67 | // VFALCO ? | ||
| 68 | } | ||
| 69 | } | ||
| 70 | |||
| 71 | void | ||
| 72 | 12 | message_base:: | |
| 73 | set_keep_alive(bool value) | ||
| 74 | { | ||
| 75 |
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12 | if(ph_->md.connection.ec.failed()) |
| 76 | { | ||
| 77 | // throw? return false? | ||
| 78 | 5 | return; | |
| 79 | } | ||
| 80 | |||
| 81 |
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12 | if(ph_->md.connection.count == 0) |
| 82 | { | ||
| 83 | // no Connection field | ||
| 84 |
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5 | switch(ph_->version) |
| 85 | { | ||
| 86 | 3 | default: | |
| 87 | case version::http_1_1: | ||
| 88 |
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3 | if(! value) |
| 89 |
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2 | set(field::connection, "close"); |
| 90 | 3 | break; | |
| 91 | |||
| 92 | 2 | case version::http_1_0: | |
| 93 |
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2 | if(value) |
| 94 |
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1 | set(field::connection, "keep-alive"); |
| 95 | 2 | break; | |
| 96 | } | ||
| 97 | 5 | return; | |
| 98 | } | ||
| 99 | |||
| 100 | // VFALCO TODO iterate in reverse order, | ||
| 101 | // and cache the last iterator to use | ||
| 102 | // for appending | ||
| 103 | |||
| 104 | // one or more Connection fields | ||
| 105 | 7 | auto it = begin(); | |
| 106 | auto const erase_token = | ||
| 107 | 14 | [&](core::string_view token) | |
| 108 | { | ||
| 109 |
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14 | while(it != end()) |
| 110 | { | ||
| 111 |
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8 | if(it->id != field::connection) |
| 112 | { | ||
| 113 | ✗ | ++it; | |
| 114 | 4 | continue; | |
| 115 | } | ||
| 116 | auto rv = grammar::parse( | ||
| 117 | 8 | it->value, | |
| 118 |
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16 | list_rule(token_rule, 1)); |
| 119 |
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8 | BOOST_ASSERT(! rv.has_error()); |
| 120 |
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8 | BOOST_ASSERT(! rv->empty()); |
| 121 | 8 | auto itv = rv->begin(); | |
| 122 |
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8 | if(urls::grammar::ci_is_equal( |
| 123 | 8 | *itv, token)) | |
| 124 | { | ||
| 125 |
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4 | if(rv->size() == 1) |
| 126 | { | ||
| 127 | // only one token | ||
| 128 | 3 | it = erase(it); | |
| 129 | } | ||
| 130 | else | ||
| 131 | { | ||
| 132 | // first token matches | ||
| 133 | 1 | ++itv; | |
| 134 |
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1 | set(it, |
| 135 | 1 | it->value.substr( | |
| 136 |
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2 | (*itv).data() - |
| 137 | 1 | it->value.data())); | |
| 138 | 1 | ++it; | |
| 139 | } | ||
| 140 | 4 | continue; | |
| 141 | } | ||
| 142 | // search remaining tokens | ||
| 143 |
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8 | std::string s = *itv++; |
| 144 |
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7 | while(itv != rv->end()) |
| 145 | { | ||
| 146 |
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3 | if(! urls::grammar::ci_is_equal( |
| 147 | 3 | *itv, token)) | |
| 148 |
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1 | s += ", " + std::string(*itv); |
| 149 | 3 | ++itv; | |
| 150 | } | ||
| 151 |
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4 | set(it, s); |
| 152 | 4 | ++it; | |
| 153 | } | ||
| 154 | 6 | }; | |
| 155 |
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7 | if(value) |
| 156 | { | ||
| 157 |
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6 | if(ph_->md.connection.close) |
| 158 |
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5 | erase_token("close"); |
| 159 | } | ||
| 160 | else | ||
| 161 | { | ||
| 162 |
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1 | if(ph_->md.connection.keep_alive) |
| 163 |
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1 | erase_token("keep-alive"); |
| 164 | } | ||
| 165 |
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7 | switch(ph_->version) |
| 166 | { | ||
| 167 | 5 | default: | |
| 168 | case version::http_1_1: | ||
| 169 |
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5 | if(! value) |
| 170 | { | ||
| 171 | // add one "close" token if needed | ||
| 172 | ✗ | if(! ph_->md.connection.close) | |
| 173 | ✗ | append(field::connection, "close"); | |
| 174 | } | ||
| 175 | 5 | break; | |
| 176 | |||
| 177 | 2 | case version::http_1_0: | |
| 178 |
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2 | if(value) |
| 179 | { | ||
| 180 | // add one "keep-alive" token if needed | ||
| 181 |
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1 | if(! ph_->md.connection.keep_alive) |
| 182 | ✗ | append(field::connection, "keep-alive"); | |
| 183 | } | ||
| 184 | 2 | break; | |
| 185 | } | ||
| 186 | } | ||
| 187 | |||
| 188 | //------------------------------------------------ | ||
| 189 | |||
| 190 | char* | ||
| 191 | 10 | message_base:: | |
| 192 | set_prefix_impl( | ||
| 193 | std::size_t n) | ||
| 194 | { | ||
| 195 |
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10 | if( n > h_.prefix || |
| 196 |
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3 | h_.buf == nullptr) |
| 197 | { | ||
| 198 | // allocate or grow | ||
| 199 |
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8 | if( n > h_.prefix && |
| 200 | static_cast<std::size_t>( | ||
| 201 | 7 | n - h_.prefix) > | |
| 202 | 7 | static_cast<std::size_t>( | |
| 203 |
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7 | max_offset - h_.size)) |
| 204 | 1 | detail::throw_length_error(); | |
| 205 | |||
| 206 | 7 | auto n0 = detail::header::bytes_needed( | |
| 207 | 7 | n + h_.size - h_.prefix, | |
| 208 | 7 | h_.count); | |
| 209 | 7 | auto buf = new char[n0]; | |
| 210 |
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7 | if(h_.buf != nullptr) |
| 211 | { | ||
| 212 | 3 | std::memcpy( | |
| 213 | 3 | buf + n, | |
| 214 | 3 | h_.buf + h_.prefix, | |
| 215 | 3 | h_.size - h_.prefix); | |
| 216 | detail::header::table ft( | ||
| 217 | 3 | h_.buf + h_.cap); | |
| 218 | 3 | h_.copy_table(buf + n0); | |
| 219 |
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3 | delete[] h_.buf; |
| 220 | } | ||
| 221 | else | ||
| 222 | { | ||
| 223 | 4 | std::memcpy( | |
| 224 | 4 | buf + n, | |
| 225 | 4 | h_.cbuf + h_.prefix, | |
| 226 | 4 | h_.size - h_.prefix); | |
| 227 | } | ||
| 228 | 7 | h_.buf = buf; | |
| 229 | 7 | h_.cbuf = buf; | |
| 230 | 7 | h_.size = static_cast< | |
| 231 | 7 | offset_type>(h_.size + | |
| 232 | 7 | n - h_.prefix); | |
| 233 | 7 | h_.prefix = static_cast< | |
| 234 | offset_type>(n); | ||
| 235 | 7 | h_.cap = n0; | |
| 236 | 7 | return h_.buf; | |
| 237 | } | ||
| 238 | |||
| 239 | // shrink | ||
| 240 | 2 | std::memmove( | |
| 241 | 2 | h_.buf + n, | |
| 242 | 2 | h_.buf + h_.prefix, | |
| 243 | 2 | h_.size - h_.prefix); | |
| 244 | 2 | h_.size = static_cast< | |
| 245 | 2 | offset_type>(h_.size - | |
| 246 | 2 | h_.prefix + n); | |
| 247 | 2 | h_.prefix = static_cast< | |
| 248 | offset_type>(n); | ||
| 249 | 2 | return h_.buf; | |
| 250 | } | ||
| 251 | |||
| 252 | } // http_proto | ||
| 253 | } // boost | ||
| 254 |