libs/http/src/server/send_file.cpp
0.0% Lines (0/85)
0.0% Functions (0/3)
0.0% Branches (0/71)
libs/http/src/server/send_file.cpp
| Line | Hits | Source Code |
|---|---|---|
| 1 | // | |
| 2 | // Copyright (c) 2025 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/server/send_file.hpp> | |
| 11 | #include <boost/http/server/etag.hpp> | |
| 12 | #include <boost/http/server/fresh.hpp> | |
| 13 | #include <boost/http/server/mime_types.hpp> | |
| 14 | #include <boost/http/server/range_parser.hpp> | |
| 15 | #include <boost/http/field.hpp> | |
| 16 | #include <boost/http/status.hpp> | |
| 17 | #include <ctime> | |
| 18 | #include <filesystem> | |
| 19 | ||
| 20 | namespace boost { | |
| 21 | namespace http { | |
| 22 | ||
| 23 | namespace { | |
| 24 | ||
| 25 | // Get file stats | |
| 26 | bool | |
| 27 | ✗ | get_file_stats( |
| 28 | core::string_view path, | |
| 29 | std::uint64_t& size, | |
| 30 | std::uint64_t& mtime) | |
| 31 | { | |
| 32 | ✗ | system::error_code ec; |
| 33 | ✗ | std::filesystem::path p(path.begin(), path.end()); |
| 34 | ||
| 35 | ✗ | auto status = std::filesystem::status(p, ec); |
| 36 | ✗ | if(ec.failed() || ! std::filesystem::is_regular_file(status)) |
| 37 | ✗ | return false; |
| 38 | ||
| 39 | ✗ | size = static_cast<std::uint64_t>( |
| 40 | ✗ | std::filesystem::file_size(p, ec)); |
| 41 | ✗ | if(ec.failed()) |
| 42 | ✗ | return false; |
| 43 | ||
| 44 | ✗ | auto ftime = std::filesystem::last_write_time(p, ec); |
| 45 | ✗ | if(ec.failed()) |
| 46 | ✗ | return false; |
| 47 | ||
| 48 | // Convert to Unix timestamp | |
| 49 | auto const sctp = std::chrono::time_point_cast< | |
| 50 | ✗ | std::chrono::system_clock::duration>( |
| 51 | ✗ | ftime - std::filesystem::file_time_type::clock::now() + |
| 52 | ✗ | std::chrono::system_clock::now()); |
| 53 | ✗ | mtime = static_cast<std::uint64_t>( |
| 54 | ✗ | std::chrono::system_clock::to_time_t(sctp)); |
| 55 | ||
| 56 | ✗ | return true; |
| 57 | ✗ | } |
| 58 | ||
| 59 | } // (anon) | |
| 60 | ||
| 61 | std::string | |
| 62 | ✗ | format_http_date(std::uint64_t mtime) |
| 63 | { | |
| 64 | ✗ | std::time_t t = static_cast<std::time_t>(mtime); |
| 65 | std::tm tm; | |
| 66 | #ifdef _WIN32 | |
| 67 | gmtime_s(&tm, &t); | |
| 68 | #else | |
| 69 | ✗ | gmtime_r(&t, &tm); |
| 70 | #endif | |
| 71 | ||
| 72 | char buf[64]; | |
| 73 | ✗ | std::strftime(buf, sizeof(buf), |
| 74 | "%a, %d %b %Y %H:%M:%S GMT", &tm); | |
| 75 | ✗ | return std::string(buf); |
| 76 | } | |
| 77 | ||
| 78 | void | |
| 79 | ✗ | send_file_init( |
| 80 | send_file_info& info, | |
| 81 | route_params& rp, | |
| 82 | core::string_view path, | |
| 83 | send_file_options const& opts) | |
| 84 | { | |
| 85 | ✗ | info = send_file_info{}; |
| 86 | ||
| 87 | // Get file stats | |
| 88 | ✗ | if(! get_file_stats(path, info.size, info.mtime)) |
| 89 | { | |
| 90 | ✗ | info.result = send_file_result::not_found; |
| 91 | ✗ | return; |
| 92 | } | |
| 93 | ||
| 94 | // Determine content type | |
| 95 | ✗ | if(! opts.content_type.empty()) |
| 96 | { | |
| 97 | ✗ | info.content_type = opts.content_type; |
| 98 | } | |
| 99 | else | |
| 100 | { | |
| 101 | ✗ | auto ct = mime_types::content_type(path); |
| 102 | ✗ | if(ct.empty()) |
| 103 | ✗ | ct = "application/octet-stream"; |
| 104 | ✗ | info.content_type = std::move(ct); |
| 105 | ✗ | } |
| 106 | ||
| 107 | // Generate ETag if enabled | |
| 108 | ✗ | if(opts.etag) |
| 109 | { | |
| 110 | ✗ | info.etag = etag(info.size, info.mtime); |
| 111 | ✗ | rp.res.set(field::etag, info.etag); |
| 112 | } | |
| 113 | ||
| 114 | // Set Last-Modified if enabled | |
| 115 | ✗ | if(opts.last_modified) |
| 116 | { | |
| 117 | ✗ | info.last_modified = format_http_date(info.mtime); |
| 118 | ✗ | rp.res.set(field::last_modified, info.last_modified); |
| 119 | } | |
| 120 | ||
| 121 | // Set Cache-Control | |
| 122 | ✗ | if(opts.max_age > 0) |
| 123 | { | |
| 124 | std::string cc = "public, max-age=" + | |
| 125 | ✗ | std::to_string(opts.max_age); |
| 126 | ✗ | rp.res.set(field::cache_control, cc); |
| 127 | ✗ | } |
| 128 | ||
| 129 | // Check freshness (conditional GET) | |
| 130 | ✗ | if(is_fresh(rp.req, rp.res)) |
| 131 | { | |
| 132 | ✗ | info.result = send_file_result::not_modified; |
| 133 | ✗ | return; |
| 134 | } | |
| 135 | ||
| 136 | // Set Content-Type | |
| 137 | ✗ | rp.res.set(field::content_type, info.content_type); |
| 138 | ||
| 139 | // Handle Range header | |
| 140 | ✗ | auto range_header = rp.req.value_or(field::range, ""); |
| 141 | ✗ | if(! range_header.empty()) |
| 142 | { | |
| 143 | auto range_result = parse_range( | |
| 144 | ✗ | static_cast<std::int64_t>(info.size), |
| 145 | ✗ | range_header); |
| 146 | ||
| 147 | ✗ | if(range_result.type == range_result_type::ok && |
| 148 | ✗ | ! range_result.ranges.empty()) |
| 149 | { | |
| 150 | // Use first range only (simplification) | |
| 151 | ✗ | auto const& range = range_result.ranges[0]; |
| 152 | ✗ | info.is_range = true; |
| 153 | ✗ | info.range_start = range.start; |
| 154 | ✗ | info.range_end = range.end; |
| 155 | ||
| 156 | // Set 206 Partial Content | |
| 157 | ✗ | rp.res.set_status(status::partial_content); |
| 158 | ||
| 159 | ✗ | auto const content_length = |
| 160 | ✗ | range.end - range.start + 1; |
| 161 | ✗ | rp.res.set_payload_size( |
| 162 | static_cast<std::uint64_t>(content_length)); | |
| 163 | ||
| 164 | // Content-Range header | |
| 165 | ✗ | std::string cr = "bytes " + |
| 166 | ✗ | std::to_string(range.start) + "-" + |
| 167 | ✗ | std::to_string(range.end) + "/" + |
| 168 | ✗ | std::to_string(info.size); |
| 169 | ✗ | rp.res.set(field::content_range, cr); |
| 170 | ||
| 171 | ✗ | info.result = send_file_result::ok; |
| 172 | ✗ | return; |
| 173 | ✗ | } |
| 174 | ||
| 175 | ✗ | if(range_result.type == range_result_type::unsatisfiable) |
| 176 | { | |
| 177 | ✗ | rp.res.set_status( |
| 178 | status::range_not_satisfiable); | |
| 179 | ✗ | rp.res.set(field::content_range, |
| 180 | ✗ | "bytes */" + std::to_string(info.size)); |
| 181 | ✗ | info.result = send_file_result::error; |
| 182 | ✗ | return; |
| 183 | } | |
| 184 | // If malformed, ignore and serve full content | |
| 185 | ✗ | } |
| 186 | ||
| 187 | // Full content response | |
| 188 | ✗ | rp.res.set_status(status::ok); |
| 189 | ✗ | rp.res.set_payload_size(info.size); |
| 190 | ✗ | info.range_start = 0; |
| 191 | ✗ | info.range_end = static_cast<std::int64_t>(info.size) - 1; |
| 192 | ✗ | info.result = send_file_result::ok; |
| 193 | } | |
| 194 | ||
| 195 | } // http | |
| 196 | } // boost | |
| 197 |