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1 | // | ||
2 | // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com) | ||
3 | // Copyright (c) 2024 Christian Mazakas | ||
4 | // | ||
5 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
6 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
7 | // | ||
8 | // Official repository: https://github.com/cppalliance/http_proto | ||
9 | // | ||
10 | |||
11 | #include <boost/http_proto/serializer.hpp> | ||
12 | #include <boost/http_proto/message_view_base.hpp> | ||
13 | #include <boost/http_proto/filter.hpp> | ||
14 | #include <boost/http_proto/service/zlib_service.hpp> | ||
15 | #include <boost/http_proto/detail/except.hpp> | ||
16 | #include <boost/buffers/algorithm.hpp> | ||
17 | #include <boost/buffers/buffer_copy.hpp> | ||
18 | #include <boost/buffers/buffer_size.hpp> | ||
19 | #include <boost/core/ignore_unused.hpp> | ||
20 | #include <stddef.h> | ||
21 | #include <iostream> | ||
22 | |||
23 | namespace boost { | ||
24 | namespace http_proto { | ||
25 | |||
26 | //------------------------------------------------ | ||
27 | |||
28 | void | ||
29 | ✗ | consume_buffers( | |
30 | buffers::const_buffer*& p, | ||
31 | std::size_t& n, | ||
32 | std::size_t bytes) | ||
33 | { | ||
34 | ✗ | while(n > 0) | |
35 | { | ||
36 | ✗ | if(bytes < p->size()) | |
37 | { | ||
38 | ✗ | *p += bytes; | |
39 | ✗ | return; | |
40 | } | ||
41 | ✗ | bytes -= p->size(); | |
42 | ✗ | ++p; | |
43 | ✗ | --n; | |
44 | } | ||
45 | |||
46 | // Precondition violation | ||
47 | ✗ | if(bytes > 0) | |
48 | ✗ | detail::throw_invalid_argument(); | |
49 | } | ||
50 | |||
51 | template<class MutableBuffers> | ||
52 | void | ||
53 | 54 | write_chunk_header( | |
54 | MutableBuffers const& dest0, | ||
55 | std::size_t size) noexcept | ||
56 | { | ||
57 | static constexpr char hexdig[] = | ||
58 | "0123456789ABCDEF"; | ||
59 | char buf[18]; | ||
60 | 54 | auto p = buf + 16; | |
61 |
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918 | for(std::size_t i = 16; i--;) |
62 | { | ||
63 | 864 | *--p = hexdig[size & 0xf]; | |
64 | 864 | size >>= 4; | |
65 | } | ||
66 | 54 | buf[16] = '\r'; | |
67 | 54 | buf[17] = '\n'; | |
68 | 54 | auto n = buffers::buffer_copy( | |
69 | dest0, | ||
70 | 108 | buffers::const_buffer( | |
71 | buf, sizeof(buf))); | ||
72 | ignore_unused(n); | ||
73 |
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54 | BOOST_ASSERT(n == 18); |
74 |
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54 | BOOST_ASSERT( |
75 | buffers::buffer_size(dest0) == n); | ||
76 | 54 | } | |
77 | |||
78 | template<class DynamicBuffer> | ||
79 | void | ||
80 | 19 | write_chunk_close(DynamicBuffer& db) | |
81 | { | ||
82 | 19 | db.commit( | |
83 | buffers::buffer_copy( | ||
84 |
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19 | db.prepare(2), |
85 | 19 | buffers::const_buffer("\r\n", 2))); | |
86 | 19 | } | |
87 | |||
88 | template<class DynamicBuffer> | ||
89 | void | ||
90 | 3 | write_last_chunk(DynamicBuffer& db) | |
91 | { | ||
92 | 3 | db.commit( | |
93 | buffers::buffer_copy( | ||
94 |
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3 | db.prepare(5), |
95 | 3 | buffers::const_buffer("0\r\n\r\n", 5))); | |
96 | 3 | } | |
97 | |||
98 | //------------------------------------------------ | ||
99 | |||
100 | 20 | serializer:: | |
101 | ~serializer() | ||
102 | { | ||
103 | 20 | } | |
104 | |||
105 | 9 | serializer:: | |
106 | 9 | serializer() | |
107 | 9 | : serializer(65536) | |
108 | { | ||
109 | 9 | } | |
110 | |||
111 | ✗ | serializer:: | |
112 | serializer( | ||
113 | serializer&&) noexcept = default; | ||
114 | |||
115 | 20 | serializer:: | |
116 | serializer( | ||
117 | 20 | std::size_t buffer_size) | |
118 | 20 | : ws_(buffer_size) | |
119 | { | ||
120 | 20 | } | |
121 | |||
122 | ✗ | serializer:: | |
123 | serializer( | ||
124 | context& ctx, | ||
125 | ✗ | std::size_t buffer_size) | |
126 | ✗ | : ws_(buffer_size) | |
127 | ✗ | , ctx_(&ctx) | |
128 | { | ||
129 | ✗ | if( ctx_->has_service<zlib::deflate_decoder_service>() ) | |
130 | { | ||
131 | ✗ | filter_ws_.allocate(1024); | |
132 | ✗ | tmp1_ = { filter_ws_.data(), filter_ws_.size() }; | |
133 | } | ||
134 | ✗ | } | |
135 | |||
136 | void | ||
137 | ✗ | serializer:: | |
138 | reset() noexcept | ||
139 | { | ||
140 | ✗ | } | |
141 | |||
142 | //------------------------------------------------ | ||
143 | |||
144 | auto | ||
145 | 67 | serializer:: | |
146 | prepare() -> | ||
147 | system::result< | ||
148 | const_buffers_type> | ||
149 | { | ||
150 | // Precondition violation | ||
151 |
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67 | if(is_done_) |
152 | 1 | detail::throw_logic_error(); | |
153 | |||
154 | // Expect: 100-continue | ||
155 |
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66 | if(is_expect_continue_) |
156 | { | ||
157 |
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4 | if(out_.data() == hp_) |
158 | 2 | return const_buffers_type(hp_, 1); | |
159 | 2 | is_expect_continue_ = false; | |
160 | 2 | BOOST_HTTP_PROTO_RETURN_EC( | |
161 | error::expect_100_continue); | ||
162 | } | ||
163 | |||
164 |
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62 | if( is_compressed_ ) |
165 | { | ||
166 | ✗ | auto on_end = [&] | |
167 | { | ||
168 | ✗ | std::size_t n = 0; | |
169 | ✗ | if(out_.data() == hp_) | |
170 | ✗ | ++n; | |
171 | |||
172 | ✗ | for(buffers::const_buffer const& b : tmp0_.data()) | |
173 | ✗ | out_[n++] = b; | |
174 | |||
175 | auto cbs = const_buffers_type( | ||
176 | ✗ | out_.data(), out_.size()); | |
177 | |||
178 | ✗ | BOOST_ASSERT(buffers::buffer_size(cbs) > 0); | |
179 | |||
180 | ✗ | return cbs; | |
181 | ✗ | }; | |
182 | |||
183 | ✗ | if(! zlib_filter_ ) | |
184 | { | ||
185 | auto& svc = | ||
186 | ✗ | ctx_->get_service< | |
187 | ✗ | zlib::deflate_decoder_service>(); | |
188 | |||
189 | ✗ | zlib_filter_ = &svc.make_filter(filter_ws_); | |
190 | ✗ | tmp1_ = | |
191 | ✗ | { filter_ws_.data(), filter_ws_.size() }; | |
192 | } | ||
193 | |||
194 | ✗ | auto& zbuf = tmp1_; | |
195 | |||
196 | ✗ | if( st_ == style::source ) | |
197 | { | ||
198 | ✗ | auto results = src_->read( | |
199 | ✗ | zbuf.prepare(zbuf.capacity())); | |
200 | ✗ | more_ = !results.finished; | |
201 | ✗ | zbuf.commit(results.bytes); | |
202 | } | ||
203 | |||
204 | ✗ | buffers::mutable_buffer chunk_header; | |
205 | ✗ | if( is_chunked_ ) | |
206 | { | ||
207 | ✗ | auto mbs = tmp0_.prepare(detail::chunk_header_len_); | |
208 | ✗ | auto buf = *mbs.begin(); | |
209 | ✗ | if( buf.size() == 0 ) | |
210 | { | ||
211 | ✗ | auto p = mbs.begin(); | |
212 | ✗ | ++p; | |
213 | ✗ | buf = *p; | |
214 | } | ||
215 | |||
216 | ✗ | if( buf.size() < detail::chunk_header_len_ ) | |
217 | ✗ | detail::throw_length_error(); | |
218 | |||
219 | ✗ | std::memset( | |
220 | buf.data(), 0x00, detail::chunk_header_len_); | ||
221 | ✗ | tmp0_.commit(detail::chunk_header_len_); | |
222 | |||
223 | ✗ | chunk_header = buf; | |
224 | } | ||
225 | |||
226 | ✗ | auto get_output = [&]() -> buffers::mutable_buffer | |
227 | { | ||
228 | ✗ | auto mbs = tmp0_.prepare(tmp0_.capacity()); | |
229 | ✗ | auto buf = *mbs.begin(); | |
230 | ✗ | if( buf.size() == 0 ) | |
231 | { | ||
232 | ✗ | auto p = mbs.begin(); | |
233 | ✗ | ++p; | |
234 | ✗ | buf = *p; | |
235 | } | ||
236 | |||
237 | ✗ | if( is_chunked_ ) | |
238 | { | ||
239 | ✗ | if( buf.size() < | |
240 | detail::crlf_len_ + detail::last_chunk_len_ + 1 ) | ||
241 | ✗ | return {}; | |
242 | |||
243 | auto n = | ||
244 | ✗ | buf.size() - | |
245 | detail::crlf_len_ - | ||
246 | ✗ | detail::last_chunk_len_; | |
247 | |||
248 | ✗ | buf = { buf.data(), n }; | |
249 | } | ||
250 | |||
251 | // BOOST_ASSERT(buf.size() > 0); | ||
252 | ✗ | return buf; | |
253 | ✗ | }; | |
254 | |||
255 | ✗ | auto get_input = [&]() -> buffers::const_buffer | |
256 | { | ||
257 | ✗ | if( st_ == style::buffers ) | |
258 | { | ||
259 | ✗ | if( buffers::buffer_size(buf_) == 0 ) | |
260 | ✗ | return {}; | |
261 | |||
262 | ✗ | auto buf = *(buf_.data()); | |
263 | ✗ | BOOST_ASSERT(buf.size() > 0); | |
264 | ✗ | return buf; | |
265 | } | ||
266 | else | ||
267 | { | ||
268 | ✗ | if( zbuf.size() == 0 ) | |
269 | ✗ | return {}; | |
270 | |||
271 | ✗ | auto cbs = zbuf.data(); | |
272 | ✗ | auto buf = *cbs.begin(); | |
273 | ✗ | if( buf.size() == 0 ) | |
274 | { | ||
275 | ✗ | auto p = cbs.begin(); | |
276 | ✗ | ++p; | |
277 | ✗ | buf = *p; | |
278 | } | ||
279 | ✗ | BOOST_ASSERT(buf.size() > 0); | |
280 | ✗ | return buf; | |
281 | } | ||
282 | ✗ | }; | |
283 | |||
284 | ✗ | std::size_t num_written = 0; | |
285 | while( true ) | ||
286 | { | ||
287 | ✗ | auto in = get_input(); | |
288 | ✗ | auto out = get_output(); | |
289 | ✗ | if( out.size() < 6 + 1 ) | |
290 | { | ||
291 | ✗ | BOOST_ASSERT(tmp0_.size() > 0); | |
292 | ✗ | break; | |
293 | } | ||
294 | |||
295 | ✗ | auto results = zlib_filter_->on_process( | |
296 | ✗ | out, in, more_); | |
297 | |||
298 | ✗ | if( results.finished ) | |
299 | ✗ | filter_done_ = true; | |
300 | |||
301 | ✗ | if( st_ == style::buffers ) | |
302 | { | ||
303 | ✗ | buf_.consume(results.in_bytes); | |
304 | ✗ | if( buffers::buffer_size(buf_) == 0 ) | |
305 | ✗ | more_ = false; | |
306 | } | ||
307 | else | ||
308 | ✗ | zbuf.consume(results.in_bytes); | |
309 | |||
310 | ✗ | if( results.out_bytes == 0 ) | |
311 | ✗ | break; | |
312 | |||
313 | ✗ | BOOST_ASSERT(results.out_bytes > 0); | |
314 | |||
315 | ✗ | num_written += results.out_bytes; | |
316 | ✗ | tmp0_.commit(results.out_bytes); | |
317 | ✗ | } | |
318 | |||
319 | ✗ | BOOST_ASSERT(tmp0_.size() > 0); | |
320 | ✗ | if( is_chunked_ ) | |
321 | { | ||
322 | ✗ | write_chunk_header( | |
323 | chunk_header, num_written); | ||
324 | |||
325 | ✗ | buffers::buffer_copy( | |
326 | ✗ | tmp0_.prepare(2), | |
327 | ✗ | buffers::const_buffer("\r\n", 2)); | |
328 | ✗ | tmp0_.commit(2); | |
329 | |||
330 | ✗ | if( filter_done_ ) | |
331 | { | ||
332 | ✗ | buffers::buffer_copy( | |
333 | ✗ | tmp0_.prepare(5), | |
334 | ✗ | buffers::const_buffer( | |
335 | "0\r\n\r\n", 5)); | ||
336 | ✗ | tmp0_.commit(5); | |
337 | } | ||
338 | } | ||
339 | ✗ | return on_end(); | |
340 | } | ||
341 | |||
342 |
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62 | if(st_ == style::empty) |
343 | { | ||
344 | 9 | return const_buffers_type( | |
345 | 3 | out_.data(), | |
346 | 3 | out_.size()); | |
347 | } | ||
348 | |||
349 |
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59 | if(st_ == style::buffers) |
350 | { | ||
351 | 9 | return const_buffers_type( | |
352 | 3 | out_.data(), | |
353 | 3 | out_.size()); | |
354 | } | ||
355 | |||
356 |
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56 | if(st_ == style::source) |
357 | { | ||
358 |
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22 | if(more_) |
359 | { | ||
360 |
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17 | if(! is_chunked_) |
361 | { | ||
362 |
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9 | auto rv = src_->read( |
363 |
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9 | tmp0_.prepare(tmp0_.capacity())); |
364 | 9 | tmp0_.commit(rv.bytes); | |
365 |
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9 | if(rv.ec.failed()) |
366 | ✗ | return rv.ec; | |
367 | 9 | more_ = ! rv.finished; | |
368 | } | ||
369 | else | ||
370 | { | ||
371 |
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8 | if(tmp0_.capacity() > detail::chunked_overhead_) |
372 | { | ||
373 |
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8 | auto dest = tmp0_.prepare( |
374 | 8 | tmp0_.capacity() - | |
375 | 2 - // CRLF | ||
376 | 5); // final chunk | ||
377 | |||
378 |
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8 | auto rv = src_->read( |
379 | 8 | buffers::sans_prefix(dest, 18)); | |
380 | |||
381 |
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8 | if(rv.ec.failed()) |
382 | ✗ | return rv.ec; | |
383 | |||
384 |
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8 | if(rv.bytes != 0) |
385 | { | ||
386 | 7 | write_chunk_header( | |
387 | 7 | buffers::prefix(dest, 18), rv.bytes); | |
388 | 7 | tmp0_.commit(rv.bytes + 18); | |
389 | // terminate chunk | ||
390 | 7 | tmp0_.commit( | |
391 | buffers::buffer_copy( | ||
392 |
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7 | tmp0_.prepare(2), |
393 | 14 | buffers::const_buffer( | |
394 | "\r\n", 2))); | ||
395 | } | ||
396 | |||
397 |
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8 | if(rv.finished) |
398 | { | ||
399 | 2 | tmp0_.commit( | |
400 | buffers::buffer_copy( | ||
401 |
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2 | tmp0_.prepare(5), |
402 | 2 | buffers::const_buffer( | |
403 | "0\r\n\r\n", 5))); | ||
404 | 2 | more_ = false; | |
405 | } | ||
406 | } | ||
407 | } | ||
408 | } | ||
409 | |||
410 | 22 | std::size_t n = 0; | |
411 |
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22 | if(out_.data() == hp_) |
412 | 5 | ++n; | |
413 |
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66 | for(buffers::const_buffer const& b : tmp0_.data()) |
414 | 44 | out_[n++] = b; | |
415 | |||
416 | 66 | return const_buffers_type( | |
417 | 22 | out_.data(), | |
418 | 22 | out_.size()); | |
419 | } | ||
420 | |||
421 |
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34 | if(st_ == style::stream) |
422 | { | ||
423 | 34 | std::size_t n = 0; | |
424 |
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34 | if(out_.data() == hp_) |
425 | 6 | ++n; | |
426 |
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34 | if(tmp0_.size() == 0 && more_) |
427 | { | ||
428 | 1 | BOOST_HTTP_PROTO_RETURN_EC( | |
429 | error::need_data); | ||
430 | } | ||
431 |
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99 | for(buffers::const_buffer const& b : tmp0_.data()) |
432 | 66 | out_[n++] = b; | |
433 | |||
434 | 99 | return const_buffers_type( | |
435 | 33 | out_.data(), | |
436 | 33 | out_.size()); | |
437 | } | ||
438 | |||
439 | // should never get here | ||
440 | ✗ | detail::throw_logic_error(); | |
441 | } | ||
442 | |||
443 | void | ||
444 | 1745 | serializer:: | |
445 | consume( | ||
446 | std::size_t n) | ||
447 | { | ||
448 | // Precondition violation | ||
449 |
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1745 | if(is_done_) |
450 | 1 | detail::throw_logic_error(); | |
451 | |||
452 |
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1744 | if(is_expect_continue_) |
453 | { | ||
454 | // Cannot consume more than | ||
455 | // the header on 100-continue | ||
456 |
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3 | if(n > hp_->size()) |
457 | 1 | detail::throw_invalid_argument(); | |
458 | |||
459 | 2 | out_.consume(n); | |
460 | 2 | return; | |
461 | } | ||
462 |
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1741 | else if(out_.data() == hp_) |
463 | { | ||
464 | // consume header | ||
465 |
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26 | if(n < hp_->size()) |
466 | { | ||
467 | 11 | out_.consume(n); | |
468 | 11 | return; | |
469 | } | ||
470 | 15 | n -= hp_->size(); | |
471 | 15 | out_.consume(hp_->size()); | |
472 | } | ||
473 | |||
474 |
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1730 | switch(st_) |
475 | { | ||
476 | 3 | default: | |
477 | case style::empty: | ||
478 | 3 | out_.consume(n); | |
479 |
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3 | if(out_.empty()) |
480 | 3 | is_done_ = true; | |
481 | 3 | return; | |
482 | |||
483 | 3 | case style::buffers: | |
484 |
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3 | if( is_compressed_ ) |
485 | { | ||
486 | ✗ | tmp0_.consume(n); | |
487 | ✗ | if( tmp0_.size() == 0 && | |
488 | ✗ | filter_done_ ) | |
489 | ✗ | is_done_ = true; | |
490 | ✗ | return; | |
491 | } | ||
492 | 3 | out_.consume(n); | |
493 |
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3 | if(out_.empty()) |
494 | 3 | is_done_ = true; | |
495 | 3 | return; | |
496 | |||
497 | 1724 | case style::source: | |
498 | case style::stream: | ||
499 | 1724 | tmp0_.consume(n); | |
500 |
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1724 | if( !is_compressed_ && |
501 |
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3448 | tmp0_.size() == 0 && |
502 |
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39 | ! more_) |
503 | 11 | is_done_ = true; | |
504 | |||
505 | ✗ | if( is_compressed_ && | |
506 |
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1724 | tmp0_.size() == 0 && |
507 | ✗ | filter_done_ ) | |
508 | ✗ | is_done_ = true; | |
509 | 1724 | return; | |
510 | } | ||
511 | } | ||
512 | |||
513 | //------------------------------------------------ | ||
514 | |||
515 | void | ||
516 | 7 | serializer:: | |
517 | copy( | ||
518 | buffers::const_buffer* dest, | ||
519 | buffers::const_buffer const* src, | ||
520 | std::size_t n) noexcept | ||
521 | { | ||
522 |
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14 | while(n--) |
523 | 7 | *dest++ = *src++; | |
524 | 7 | } | |
525 | |||
526 | void | ||
527 | 26 | serializer:: | |
528 | start_init( | ||
529 | message_view_base const& m) | ||
530 | { | ||
531 | 26 | ws_.clear(); | |
532 | |||
533 | // VFALCO what do we do with | ||
534 | // metadata error code failures? | ||
535 | // m.ph_->md.maybe_throw(); | ||
536 | |||
537 | 26 | is_done_ = false; | |
538 | |||
539 | 26 | is_expect_continue_ = | |
540 | 26 | m.ph_->md.expect.is_100_continue; | |
541 | |||
542 | // Transfer-Encoding | ||
543 | { | ||
544 | 26 | auto const& te = | |
545 | 26 | m.ph_->md.transfer_encoding; | |
546 | 26 | is_chunked_ = te.is_chunked; | |
547 | } | ||
548 | |||
549 |
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26 | if( m.compressed() ) |
550 | { | ||
551 | ✗ | is_compressed_ = true; | |
552 | auto& svc = | ||
553 | ✗ | ctx_->get_service< | |
554 | ✗ | zlib::deflate_decoder_service>(); | |
555 | |||
556 | ✗ | BOOST_ASSERT(!zlib_filter_); | |
557 | ✗ | zlib_filter_ = &svc.make_filter(filter_ws_); | |
558 | } | ||
559 | 26 | } | |
560 | |||
561 | void | ||
562 | 4 | serializer:: | |
563 | start_empty( | ||
564 | message_view_base const& m) | ||
565 | { | ||
566 | 4 | start_init(m); | |
567 | |||
568 | 4 | st_ = style::empty; | |
569 | |||
570 |
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4 | if(! is_chunked_) |
571 | { | ||
572 | 3 | out_ = make_array( | |
573 | 1); // header | ||
574 | } | ||
575 | else | ||
576 | { | ||
577 |
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1 | out_ = make_array( |
578 | 1 + // header | ||
579 | 1); // final chunk | ||
580 | |||
581 | // Buffer is too small | ||
582 |
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1 | if(ws_.size() < 5) |
583 | ✗ | detail::throw_length_error(); | |
584 | |||
585 | buffers::mutable_buffer dest( | ||
586 | 1 | ws_.data(), 5); | |
587 | 1 | buffers::buffer_copy( | |
588 | dest, | ||
589 | 1 | buffers::const_buffer( | |
590 | "0\r\n\r\n", 5)); | ||
591 | 1 | out_[1] = dest; | |
592 | } | ||
593 | |||
594 | 4 | hp_ = &out_[0]; | |
595 | 4 | *hp_ = { m.ph_->cbuf, m.ph_->size }; | |
596 | 4 | } | |
597 | |||
598 | void | ||
599 | 7 | serializer:: | |
600 | start_buffers( | ||
601 | message_view_base const& m) | ||
602 | { | ||
603 | 7 | st_ = style::buffers; | |
604 |
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7 | if( is_compressed_ ) |
605 | { | ||
606 | ✗ | out_ = make_array( | |
607 | 1 + // header | ||
608 | 2); // tmp | ||
609 | |||
610 | ✗ | hp_ = &out_[0]; | |
611 | ✗ | *hp_ = { m.ph_->cbuf, m.ph_->size }; | |
612 | ✗ | tmp0_ = { ws_.data(), ws_.size() }; | |
613 | ✗ | more_ = true; | |
614 | ✗ | return; | |
615 | } | ||
616 | |||
617 |
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7 | if(! is_chunked_) |
618 | { | ||
619 | //if(! cod_) | ||
620 | { | ||
621 | 6 | out_ = make_array( | |
622 | 1 + // header | ||
623 | 6 | buf_.size()); // body | |
624 | 12 | copy(&out_[1], | |
625 | 6 | buf_.data(), buf_.size()); | |
626 | } | ||
627 | #if 0 | ||
628 | else | ||
629 | { | ||
630 | out_ = make_array( | ||
631 | 1 + // header | ||
632 | 2); // tmp1 | ||
633 | } | ||
634 | #endif | ||
635 | } | ||
636 | else | ||
637 | { | ||
638 | //if(! cod_) | ||
639 | { | ||
640 |
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1 | out_ = make_array( |
641 | 1 + // header | ||
642 | 1 + // chunk size | ||
643 | 1 | buf_.size() + // body | |
644 | 1); // final chunk | ||
645 | 2 | copy(&out_[2], | |
646 | 1 | buf_.data(), buf_.size()); | |
647 | |||
648 | // Buffer is too small | ||
649 |
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1 | if(ws_.size() < 18 + 7) |
650 | ✗ | detail::throw_length_error(); | |
651 | 1 | buffers::mutable_buffer s1(ws_.data(), 18); | |
652 | 1 | buffers::mutable_buffer s2(ws_.data(), 18 + 7); | |
653 | 1 | s2 += 18; // VFALCO HACK | |
654 | 1 | write_chunk_header( | |
655 | s1, | ||
656 | 1 | buffers::buffer_size(buf_)); | |
657 | 1 | buffers::buffer_copy(s2, buffers::const_buffer( | |
658 | "\r\n" | ||
659 | "0\r\n" | ||
660 | "\r\n", 7)); | ||
661 | 1 | out_[1] = s1; | |
662 | 1 | out_[out_.size() - 1] = s2; | |
663 | } | ||
664 | #if 0 | ||
665 | else | ||
666 | { | ||
667 | out_ = make_array( | ||
668 | 1 + // header | ||
669 | 2); // tmp1 | ||
670 | } | ||
671 | #endif | ||
672 | } | ||
673 | |||
674 | 7 | hp_ = &out_[0]; | |
675 | 7 | *hp_ = { m.ph_->cbuf, m.ph_->size }; | |
676 | } | ||
677 | |||
678 | void | ||
679 | 8 | serializer:: | |
680 | start_source( | ||
681 | message_view_base const& m, | ||
682 | source* src) | ||
683 | { | ||
684 | 8 | st_ = style::source; | |
685 | 8 | src_ = src; | |
686 | 8 | out_ = make_array( | |
687 | 1 + // header | ||
688 | 2); // tmp | ||
689 | //if(! cod_) | ||
690 | { | ||
691 | 8 | tmp0_ = { ws_.data(), ws_.size() }; | |
692 |
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8 | if(tmp0_.capacity() < |
693 | 18 + // chunk size | ||
694 | 1 + // body (1 byte) | ||
695 | 2 + // CRLF | ||
696 | 5) // final chunk | ||
697 | ✗ | detail::throw_length_error(); | |
698 | } | ||
699 | #if 0 | ||
700 | else | ||
701 | { | ||
702 | buffers::buffered_base::allocator a( | ||
703 | ws_.data(), ws_.size()/3, false); | ||
704 | src->init(a); | ||
705 | ws_.reserve(a.size_used()); | ||
706 | |||
707 | auto const n = ws_.size() / 2; | ||
708 | |||
709 | tmp0_ = { ws_.data(), ws_.size() / 2 }; | ||
710 | ws_.reserve(n); | ||
711 | |||
712 | // Buffer is too small | ||
713 | if(ws_.size() < 1) | ||
714 | detail::throw_length_error(); | ||
715 | |||
716 | tmp1_ = { ws_.data(), ws_.size() }; | ||
717 | } | ||
718 | #endif | ||
719 | |||
720 | 8 | hp_ = &out_[0]; | |
721 | 8 | *hp_ = { m.ph_->cbuf, m.ph_->size }; | |
722 | 8 | more_ = true; | |
723 | 8 | } | |
724 | |||
725 | auto | ||
726 | 7 | serializer:: | |
727 | start_stream( | ||
728 | message_view_base const& m) -> | ||
729 | stream | ||
730 | { | ||
731 | 7 | start_init(m); | |
732 | |||
733 | 7 | st_ = style::stream; | |
734 | 7 | out_ = make_array( | |
735 | 1 + // header | ||
736 | 2); // tmp | ||
737 | //if(! cod_) | ||
738 | { | ||
739 | 7 | tmp0_ = { ws_.data(), ws_.size() }; | |
740 |
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7 | if(tmp0_.capacity() < |
741 | 18 + // chunk size | ||
742 | 1 + // body (1 byte) | ||
743 | 2 + // CRLF | ||
744 | 5) // final chunk | ||
745 | ✗ | detail::throw_length_error(); | |
746 | } | ||
747 | #if 0 | ||
748 | else | ||
749 | { | ||
750 | auto const n = ws_.size() / 2; | ||
751 | tmp0_ = { ws_.data(), n }; | ||
752 | ws_.reserve(n); | ||
753 | |||
754 | // Buffer is too small | ||
755 | if(ws_.size() < 1) | ||
756 | detail::throw_length_error(); | ||
757 | |||
758 | tmp1_ = { ws_.data(), ws_.size() }; | ||
759 | } | ||
760 | #endif | ||
761 | |||
762 | 7 | hp_ = &out_[0]; | |
763 | 7 | *hp_ = { m.ph_->cbuf, m.ph_->size }; | |
764 | |||
765 | 7 | more_ = true; | |
766 | |||
767 | 7 | return stream{*this}; | |
768 | } | ||
769 | |||
770 | //------------------------------------------------ | ||
771 | |||
772 | std::size_t | ||
773 | 140 | serializer:: | |
774 | stream:: | ||
775 | capacity() const noexcept | ||
776 | { | ||
777 | 140 | return sr_->tmp0_.capacity(); | |
778 | } | ||
779 | |||
780 | std::size_t | ||
781 | 132 | serializer:: | |
782 | stream:: | ||
783 | size() const noexcept | ||
784 | { | ||
785 | 132 | return sr_->tmp0_.size(); | |
786 | } | ||
787 | |||
788 | bool | ||
789 | 66 | serializer:: | |
790 | stream:: | ||
791 | is_full() const noexcept | ||
792 | { | ||
793 |
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66 | if( sr_->is_chunked_ ) |
794 | 36 | return capacity() < detail::chunked_overhead_ + 1; | |
795 | |||
796 | 30 | return capacity() == 0; | |
797 | } | ||
798 | |||
799 | auto | ||
800 | 36 | serializer:: | |
801 | stream:: | ||
802 | prepare() const -> | ||
803 | buffers_type | ||
804 | { | ||
805 |
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36 | if( sr_->is_compressed_ ) |
806 | ✗ | return sr_->tmp1_.prepare( | |
807 | ✗ | sr_->tmp1_.capacity()); | |
808 | |||
809 | 36 | auto n = sr_->tmp0_.capacity(); | |
810 |
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36 | if( sr_->is_chunked_ ) |
811 | { | ||
812 | // for chunked encoding, we want to unconditionally | ||
813 | // reserve space for the complete chunk and the | ||
814 | // last-chunk | ||
815 | // this enables users to call: | ||
816 | // | ||
817 | // stream.commit(n); stream.close(); | ||
818 | // | ||
819 | // without needing to worry about draining the | ||
820 | // serializer via `consume()` calls | ||
821 |
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21 | if( n < detail::chunked_overhead_ + 1 ) |
822 | 1 | detail::throw_length_error(); | |
823 | |||
824 | 20 | n -= detail::chunked_overhead_; | |
825 | 20 | return buffers::sans_prefix( | |
826 | 40 | sr_->tmp0_.prepare( | |
827 | detail::chunk_header_len_ + n), | ||
828 | 20 | detail::chunk_header_len_); | |
829 | } | ||
830 | |||
831 | 15 | return sr_->tmp0_.prepare(n); | |
832 | } | ||
833 | |||
834 | void | ||
835 | 35 | serializer:: | |
836 | stream:: | ||
837 | commit(std::size_t n) const | ||
838 | { | ||
839 |
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35 | if( sr_->is_compressed_ ) |
840 | { | ||
841 | ✗ | sr_->tmp1_.commit(n); | |
842 | ✗ | return; | |
843 | } | ||
844 | |||
845 |
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35 | if(! sr_->is_chunked_ ) |
846 | { | ||
847 | 15 | sr_->tmp0_.commit(n); | |
848 | } | ||
849 | else | ||
850 | { | ||
851 | // Zero sized chunks are not valid. Call close() | ||
852 | // if the intent is to signal the end of the body. | ||
853 |
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20 | if( n == 0 ) |
854 | 1 | detail::throw_logic_error(); | |
855 | |||
856 | // TODO: this needs to be relocated | ||
857 | // | ||
858 | 19 | auto m = n + detail::chunk_header_len_; | |
859 |
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19 | auto dest = sr_->tmp0_.prepare(m); |
860 | 19 | write_chunk_header( | |
861 | 19 | buffers::prefix( | |
862 | dest, detail::chunk_header_len_), | ||
863 | n); | ||
864 | 19 | sr_->tmp0_.commit(m); | |
865 |
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19 | write_chunk_close(sr_->tmp0_); |
866 | } | ||
867 | } | ||
868 | |||
869 | void | ||
870 | 9 | serializer:: | |
871 | stream:: | ||
872 | close() const | ||
873 | { | ||
874 | // Precondition violation | ||
875 |
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9 | if(! sr_->more_ ) |
876 | 4 | detail::throw_logic_error(); | |
877 | |||
878 |
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5 | if( sr_->is_chunked_ && !sr_->is_compressed_ ) |
879 | 3 | write_last_chunk(sr_->tmp0_); | |
880 | |||
881 | 5 | sr_->more_ = false; | |
882 | 5 | } | |
883 | |||
884 | //------------------------------------------------ | ||
885 | |||
886 | } // http_proto | ||
887 | } // boost | ||
888 |