libs/http/src/header_limits.cpp
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libs/http/src/header_limits.cpp
| Line | Hits | Source Code |
|---|---|---|
| 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 | |
| 8 | // | |
| 9 | ||
| 10 | #include <boost/http/header_limits.hpp> | |
| 11 | #include <boost/http/detail/except.hpp> | |
| 12 | #include <boost/http/detail/header.hpp> | |
| 13 | ||
| 14 | namespace boost { | |
| 15 | namespace http { | |
| 16 | ||
| 17 | std::size_t | |
| 18 | 28 | header_limits:: |
| 19 | valid_space_needed() const | |
| 20 | { | |
| 21 | /* | |
| 22 | // "HTTP/1.1 200 OK\r\n\r\n" = 19 | |
| 23 | // "X / HTTP/1.1\r\n" = 14 | |
| 24 | // "HTTP/1.1 200\r\n" = 14 | |
| 25 | // "X:\r\n" = 4 | |
| 26 | ||
| 27 | // make sure `size` is big enough | |
| 28 | // to hold the largest default buffer: | |
| 29 | //if( max_size < 19) | |
| 30 | //max_size = 19; | |
| 31 | ||
| 32 | // max_size too small | |
| 33 | if( max_size < 19) | |
| 34 | detail::throw_invalid_argument(); | |
| 35 | ||
| 36 | // max_size too large | |
| 37 | if( max_size > | |
| 38 | BOOST_HTTP_MAX_HEADER) | |
| 39 | detail::throw_invalid_argument(); | |
| 40 | ||
| 41 | // max_start_line too small | |
| 42 | if( max_start_line < 14) | |
| 43 | detail::throw_invalid_argument(); | |
| 44 | ||
| 45 | // max_start_line too large | |
| 46 | if( max_start_line > | |
| 47 | max_size - 2) | |
| 48 | detail::throw_invalid_argument(); | |
| 49 | ||
| 50 | // max_field too small | |
| 51 | if( max_field < 4) | |
| 52 | detail::throw_invalid_argument(); | |
| 53 | ||
| 54 | // max_field too large | |
| 55 | if( max_field > | |
| 56 | max_size) | |
| 57 | detail::throw_invalid_argument(); | |
| 58 | ||
| 59 | // max_fields too large | |
| 60 | if( max_fields > | |
| 61 | max_size / 4) | |
| 62 | detail::throw_invalid_argument(); | |
| 63 | */ | |
| 64 | static constexpr auto Align = | |
| 65 | alignof(detail::header::entry); | |
| 66 | // round up to alignof(A) | |
| 67 | 28 | return Align * ( |
| 68 | 28 | (max_size + Align - 1) / Align) + ( |
| 69 | 28 | max_fields * sizeof( |
| 70 | 28 | detail::header::entry)); |
| 71 | } | |
| 72 | ||
| 73 | } // http | |
| 74 | } // boost | |
| 75 |