Mercurial > hg > nginx-quic
comparison src/http/v3/ngx_http_v3_request.c @ 7681:38c0898b6df7 quic
HTTP/3.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Fri, 13 Mar 2020 19:36:33 +0300 |
parents | |
children | 1307308c3cf1 |
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7680:6fd2cce50fe2 | 7681:38c0898b6df7 |
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1 | |
2 /* | |
3 * Copyright (C) Roman Arutyunyan | |
4 * Copyright (C) Nginx, Inc. | |
5 */ | |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
11 | |
12 | |
13 #define NGX_HTTP_V3_FRAME_DATA 0x00 | |
14 #define NGX_HTTP_V3_FRAME_HEADERS 0x01 | |
15 #define NGX_HTTP_V3_FRAME_CANCEL_PUSH 0x03 | |
16 #define NGX_HTTP_V3_FRAME_SETTINGS 0x04 | |
17 #define NGX_HTTP_V3_FRAME_PUSH_PROMISE 0x05 | |
18 #define NGX_HTTP_V3_FRAME_GOAWAY 0x07 | |
19 #define NGX_HTTP_V3_FRAME_MAX_PUSH_ID 0x0d | |
20 | |
21 | |
22 static ngx_int_t ngx_http_v3_process_pseudo_header(ngx_http_request_t *r, | |
23 ngx_str_t *name, ngx_str_t *value); | |
24 | |
25 | |
26 struct { | |
27 ngx_str_t name; | |
28 ngx_uint_t method; | |
29 } ngx_http_v3_methods[] = { | |
30 | |
31 { ngx_string("GET"), NGX_HTTP_GET }, | |
32 { ngx_string("POST"), NGX_HTTP_POST }, | |
33 { ngx_string("HEAD"), NGX_HTTP_HEAD }, | |
34 { ngx_string("OPTIONS"), NGX_HTTP_OPTIONS }, | |
35 { ngx_string("PROPFIND"), NGX_HTTP_PROPFIND }, | |
36 { ngx_string("PUT"), NGX_HTTP_PUT }, | |
37 { ngx_string("MKCOL"), NGX_HTTP_MKCOL }, | |
38 { ngx_string("DELETE"), NGX_HTTP_DELETE }, | |
39 { ngx_string("COPY"), NGX_HTTP_COPY }, | |
40 { ngx_string("MOVE"), NGX_HTTP_MOVE }, | |
41 { ngx_string("PROPPATCH"), NGX_HTTP_PROPPATCH }, | |
42 { ngx_string("LOCK"), NGX_HTTP_LOCK }, | |
43 { ngx_string("UNLOCK"), NGX_HTTP_UNLOCK }, | |
44 { ngx_string("PATCH"), NGX_HTTP_PATCH }, | |
45 { ngx_string("TRACE"), NGX_HTTP_TRACE } | |
46 }; | |
47 | |
48 | |
49 ngx_int_t | |
50 ngx_http_v3_parse_header(ngx_http_request_t *r, ngx_buf_t *b, ngx_uint_t pseudo) | |
51 { | |
52 u_char *p, ch; | |
53 ngx_str_t name, value; | |
54 ngx_int_t rc; | |
55 ngx_uint_t length, index, insert_count, sign, base, delta_base, | |
56 huffman, dynamic, offset; | |
57 ngx_connection_t *c; | |
58 ngx_http_v3_header_t *h; | |
59 enum { | |
60 sw_start = 0, | |
61 sw_length, | |
62 sw_length_1, | |
63 sw_length_2, | |
64 sw_length_3, | |
65 sw_header_block, | |
66 sw_req_insert_count, | |
67 sw_delta_base, | |
68 sw_read_delta_base, | |
69 sw_header, | |
70 sw_old_header, | |
71 sw_header_ri, | |
72 sw_header_pbi, | |
73 sw_header_lri, | |
74 sw_header_lpbi, | |
75 sw_header_l_name_len, | |
76 sw_header_l_name, | |
77 sw_header_value_len, | |
78 sw_header_read_value_len, | |
79 sw_header_value | |
80 } state; | |
81 | |
82 c = r->connection; | |
83 | |
84 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
85 "http3 parse header, pseudo:%ui", pseudo); | |
86 | |
87 if (r->state == sw_old_header) { | |
88 r->state = sw_header; | |
89 return NGX_OK; | |
90 } | |
91 | |
92 length = r->h3_length; | |
93 index = r->h3_index; | |
94 insert_count = r->h3_insert_count; | |
95 sign = r->h3_sign; | |
96 delta_base = r->h3_delta_base; | |
97 huffman = r->h3_huffman; | |
98 dynamic = r->h3_dynamic; | |
99 offset = r->h3_offset; | |
100 | |
101 name.data = r->header_name_start; | |
102 name.len = r->header_name_end - r->header_name_start; | |
103 value.data = r->header_start; | |
104 value.len = r->header_end - r->header_start; | |
105 | |
106 if (r->state == sw_start) { | |
107 length = 1; | |
108 } | |
109 | |
110 again: | |
111 | |
112 state = r->state; | |
113 | |
114 if (state == sw_header && length == 0) { | |
115 r->state = sw_start; | |
116 return NGX_HTTP_PARSE_HEADER_DONE; | |
117 } | |
118 | |
119 for (p = b->pos; p < b->last; p++) { | |
120 | |
121 if (state >= sw_header_block && length-- == 0) { | |
122 goto failed; | |
123 } | |
124 | |
125 ch = *p; | |
126 | |
127 switch (state) { | |
128 | |
129 case sw_start: | |
130 | |
131 if (ch != NGX_HTTP_V3_FRAME_HEADERS) { | |
132 goto failed; | |
133 } | |
134 | |
135 r->request_start = p; | |
136 state = sw_length; | |
137 break; | |
138 | |
139 case sw_length: | |
140 | |
141 length = ch; | |
142 if (length & 0xc0) { | |
143 state = sw_length_1; | |
144 break; | |
145 } | |
146 | |
147 state = sw_header_block; | |
148 break; | |
149 | |
150 case sw_length_1: | |
151 | |
152 length = (length << 8) + ch; | |
153 if ((length & 0xc000) != 0x4000) { | |
154 state = sw_length_2; | |
155 break; | |
156 } | |
157 | |
158 length &= 0x3fff; | |
159 state = sw_header_block; | |
160 break; | |
161 | |
162 case sw_length_2: | |
163 | |
164 length = (length << 8) + ch; | |
165 if ((length & 0xc00000) != 0x800000) { | |
166 state = sw_length_3; | |
167 break; | |
168 } | |
169 | |
170 /* fall through */ | |
171 | |
172 case sw_length_3: | |
173 | |
174 length &= 0x3fffff; | |
175 state = sw_header_block; | |
176 break; | |
177 | |
178 case sw_header_block: | |
179 | |
180 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
181 "http3 header block length:%ui", length); | |
182 | |
183 if (ch != 0xff) { | |
184 insert_count = ch; | |
185 state = sw_delta_base; | |
186 break; | |
187 } | |
188 | |
189 insert_count = 0; | |
190 state = sw_req_insert_count; | |
191 break; | |
192 | |
193 case sw_req_insert_count: | |
194 | |
195 insert_count = (insert_count << 7) + (ch & 0x7f); | |
196 if (ch & 0x80) { | |
197 break; | |
198 } | |
199 | |
200 insert_count += 0xff; | |
201 state = sw_delta_base; | |
202 break; | |
203 | |
204 case sw_delta_base: | |
205 | |
206 sign = (ch & 0x80) ? 1 : 0; | |
207 delta_base = ch & 0x7f; | |
208 | |
209 if (delta_base != 0x7f) { | |
210 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
211 "http3 header block " | |
212 "insert_count:%ui, sign:%ui, delta_base:%ui", | |
213 insert_count, sign, delta_base); | |
214 goto done; | |
215 } | |
216 | |
217 delta_base = 0; | |
218 state = sw_read_delta_base; | |
219 break; | |
220 | |
221 case sw_read_delta_base: | |
222 | |
223 delta_base = (delta_base << 7) + (ch & 0x7f); | |
224 if (ch & 0x80) { | |
225 break; | |
226 } | |
227 | |
228 delta_base += 0x7f; | |
229 | |
230 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
231 "http3 header block " | |
232 "insert_count:%ui, sign:%ui, delta_base:%ui", | |
233 insert_count, sign, delta_base); | |
234 goto done; | |
235 | |
236 case sw_header: | |
237 | |
238 index = 0; | |
239 huffman = 0; | |
240 ngx_str_null(&name); | |
241 ngx_str_null(&value); | |
242 | |
243 if (ch & 0x80) { | |
244 /* Indexed Header Field */ | |
245 | |
246 dynamic = (ch & 0x40) ? 0 : 1; | |
247 index = ch & 0x3f; | |
248 | |
249 if (index != 0x3f) { | |
250 goto done; | |
251 } | |
252 | |
253 index = 0; | |
254 state = sw_header_ri; | |
255 break; | |
256 } | |
257 | |
258 if (ch & 0x40) { | |
259 /* Literal Header Field With Name Reference */ | |
260 | |
261 dynamic = (ch & 0x10) ? 0 : 1; | |
262 index = ch & 0x0f; | |
263 | |
264 if (index != 0x0f) { | |
265 state = sw_header_value_len; | |
266 break; | |
267 } | |
268 | |
269 index = 0; | |
270 state = sw_header_lri; | |
271 break; | |
272 } | |
273 | |
274 if (ch & 0x20) { | |
275 /* Literal Header Field Without Name Reference */ | |
276 | |
277 huffman = (ch & 0x08) ? 1 : 0; | |
278 name.len = ch & 0x07; | |
279 | |
280 if (name.len == 0) { | |
281 goto failed; | |
282 } | |
283 | |
284 if (name.len != 0x07) { | |
285 offset = 0; | |
286 state = sw_header_l_name; | |
287 break; | |
288 } | |
289 | |
290 name.len = 0; | |
291 state = sw_header_l_name_len; | |
292 break; | |
293 } | |
294 | |
295 if (ch & 10) { | |
296 /* Indexed Header Field With Post-Base Index */ | |
297 | |
298 dynamic = 2; | |
299 index = ch & 0x0f; | |
300 | |
301 if (index != 0x0f) { | |
302 goto done; | |
303 } | |
304 | |
305 index = 0; | |
306 state = sw_header_pbi; | |
307 break; | |
308 } | |
309 | |
310 /* Literal Header Field With Post-Base Name Reference */ | |
311 | |
312 dynamic = 2; | |
313 index = ch & 0x07; | |
314 | |
315 if (index != 0x07) { | |
316 state = sw_header_value_len; | |
317 break; | |
318 } | |
319 | |
320 index = 0; | |
321 state = sw_header_lpbi; | |
322 break; | |
323 | |
324 case sw_header_ri: | |
325 | |
326 index = (index << 7) + (ch & 0x7f); | |
327 if (ch & 0x80) { | |
328 break; | |
329 } | |
330 | |
331 index += 0x3f; | |
332 goto done; | |
333 | |
334 case sw_header_pbi: | |
335 | |
336 index = (index << 7) + (ch & 0x7f); | |
337 if (ch & 0x80) { | |
338 break; | |
339 } | |
340 | |
341 index += 0x0f; | |
342 goto done; | |
343 | |
344 case sw_header_lri: | |
345 | |
346 index = (index << 7) + (ch & 0x7f); | |
347 if (ch & 0x80) { | |
348 break; | |
349 } | |
350 | |
351 index += 0x0f; | |
352 state = sw_header_value_len; | |
353 break; | |
354 | |
355 case sw_header_lpbi: | |
356 | |
357 index = (index << 7) + (ch & 0x7f); | |
358 if (ch & 0x80) { | |
359 break; | |
360 } | |
361 | |
362 index += 0x07; | |
363 state = sw_header_value_len; | |
364 break; | |
365 | |
366 | |
367 case sw_header_l_name_len: | |
368 | |
369 name.len = (name.len << 7) + (ch & 0x7f); | |
370 if (ch & 0x80) { | |
371 break; | |
372 } | |
373 | |
374 name.len += 0x07; | |
375 offset = 0; | |
376 state = sw_header_l_name; | |
377 break; | |
378 | |
379 case sw_header_l_name: | |
380 if (offset++ == 0) { | |
381 name.data = p; | |
382 } | |
383 | |
384 if (offset != name.len) { | |
385 break; | |
386 } | |
387 | |
388 if (huffman) { | |
389 if (ngx_http_v3_decode_huffman(c, &name) != NGX_OK) { | |
390 goto failed; | |
391 } | |
392 } | |
393 | |
394 state = sw_header_value_len; | |
395 break; | |
396 | |
397 case sw_header_value_len: | |
398 | |
399 huffman = (ch & 0x80) ? 1 : 0; | |
400 value.len = ch & 0x7f; | |
401 | |
402 if (value.len == 0) { | |
403 value.data = p; | |
404 goto done; | |
405 } | |
406 | |
407 if (value.len != 0x7f) { | |
408 offset = 0; | |
409 state = sw_header_value; | |
410 break; | |
411 } | |
412 | |
413 value.len = 0; | |
414 state = sw_header_read_value_len; | |
415 break; | |
416 | |
417 case sw_header_read_value_len: | |
418 | |
419 value.len = (value.len << 7) + (ch & 0x7f); | |
420 if (ch & 0x80) { | |
421 break; | |
422 } | |
423 | |
424 value.len += 0x7f; | |
425 offset = 0; | |
426 state = sw_header_value; | |
427 break; | |
428 | |
429 case sw_header_value: | |
430 | |
431 if (offset++ == 0) { | |
432 value.data = p; | |
433 } | |
434 | |
435 if (offset != value.len) { | |
436 break; | |
437 } | |
438 | |
439 if (huffman) { | |
440 if (ngx_http_v3_decode_huffman(c, &value) != NGX_OK) { | |
441 goto failed; | |
442 } | |
443 } | |
444 | |
445 goto done; | |
446 | |
447 case sw_old_header: | |
448 | |
449 break; | |
450 } | |
451 } | |
452 | |
453 b->pos = p; | |
454 r->state = state; | |
455 r->h3_length = length; | |
456 r->h3_index = index; | |
457 r->h3_insert_count = insert_count; | |
458 r->h3_sign = sign; | |
459 r->h3_delta_base = delta_base; | |
460 r->h3_huffman = huffman; | |
461 r->h3_dynamic = dynamic; | |
462 r->h3_offset = offset; | |
463 | |
464 /* XXX fix large reallocations */ | |
465 r->header_name_start = name.data; | |
466 r->header_name_end = name.data + name.len; | |
467 r->header_start = value.data; | |
468 r->header_end = value.data + value.len; | |
469 | |
470 /* XXX r->lowcase_index = i; */ | |
471 | |
472 return NGX_AGAIN; | |
473 | |
474 done: | |
475 | |
476 b->pos = p + 1; | |
477 r->state = sw_header; | |
478 r->h3_length = length; | |
479 r->h3_insert_count = insert_count; | |
480 r->h3_sign = sign; | |
481 r->h3_delta_base = delta_base; | |
482 | |
483 if (state < sw_header) { | |
484 if (ngx_http_v3_check_insert_count(c, insert_count) != NGX_OK) { | |
485 return NGX_DONE; | |
486 } | |
487 | |
488 goto again; | |
489 } | |
490 | |
491 if (sign == 0) { | |
492 base = insert_count + delta_base; | |
493 } else { | |
494 base = insert_count - delta_base - 1; | |
495 } | |
496 | |
497 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
498 "http3 header %s[%ui], base:%ui, \"%V\":\"%V\"", | |
499 dynamic ? "dynamic" : "static", index, base, &name, &value); | |
500 | |
501 if (name.data == NULL) { | |
502 | |
503 if (dynamic == 2) { | |
504 index = base - index - 1; | |
505 } else if (dynamic == 1) { | |
506 index += base; | |
507 } | |
508 | |
509 h = ngx_http_v3_lookup_table(c, dynamic, index); | |
510 if (h == NULL) { | |
511 goto failed; | |
512 } | |
513 | |
514 name = h->name; | |
515 | |
516 if (value.data == NULL) { | |
517 value = h->value; | |
518 } | |
519 } | |
520 | |
521 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
522 "http3 header \"%V\":\"%V\"", &name, &value); | |
523 | |
524 if (pseudo) { | |
525 rc = ngx_http_v3_process_pseudo_header(r, &name, &value); | |
526 | |
527 if (rc == NGX_ERROR) { | |
528 goto failed; | |
529 } | |
530 | |
531 if (rc == NGX_OK) { | |
532 r->request_end = p + 1; | |
533 goto again; | |
534 } | |
535 | |
536 /* rc == NGX_DONE */ | |
537 | |
538 r->state = sw_old_header; | |
539 } | |
540 | |
541 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
542 "http3 header left:%ui", length); | |
543 | |
544 r->header_name_start = name.data; | |
545 r->header_name_end = name.data + name.len; | |
546 r->header_start = value.data; | |
547 r->header_end = value.data + value.len; | |
548 r->header_hash = ngx_hash_key(name.data, name.len); /* XXX */ | |
549 | |
550 /* XXX r->lowcase_index = i; */ | |
551 | |
552 return NGX_OK; | |
553 | |
554 failed: | |
555 | |
556 return NGX_HTTP_PARSE_INVALID_REQUEST; | |
557 } | |
558 | |
559 | |
560 static ngx_int_t | |
561 ngx_http_v3_process_pseudo_header(ngx_http_request_t *r, ngx_str_t *name, | |
562 ngx_str_t *value) | |
563 { | |
564 ngx_uint_t i; | |
565 ngx_connection_t *c; | |
566 | |
567 c = r->connection; | |
568 | |
569 if (name->len == 7 && ngx_strncmp(name->data, ":method", 7) == 0) { | |
570 r->method_start = value->data; | |
571 r->method_end = value->data + value->len; | |
572 | |
573 for (i = 0; i < sizeof(ngx_http_v3_methods) | |
574 / sizeof(ngx_http_v3_methods[0]); i++) | |
575 { | |
576 if (value->len == ngx_http_v3_methods[i].name.len | |
577 && ngx_strncmp(value->data, ngx_http_v3_methods[i].name.data, | |
578 value->len) == 0) | |
579 { | |
580 r->method = ngx_http_v3_methods[i].method; | |
581 break; | |
582 } | |
583 } | |
584 | |
585 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
586 "http3 method \"%V\" %ui", value, r->method); | |
587 return NGX_OK; | |
588 } | |
589 | |
590 if (name->len == 5 && ngx_strncmp(name->data, ":path", 5) == 0) { | |
591 r->uri_start = value->data; | |
592 r->uri_end = value->data + value->len; | |
593 | |
594 if (ngx_http_parse_uri(r) != NGX_OK) { | |
595 ngx_log_error(NGX_LOG_INFO, c->log, 0, | |
596 "client sent invalid :path header: \"%V\"", value); | |
597 return NGX_ERROR; | |
598 } | |
599 | |
600 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
601 "http3 path \"%V\"", value); | |
602 | |
603 return NGX_OK; | |
604 } | |
605 | |
606 if (name->len == 7 && ngx_strncmp(name->data, ":scheme", 7) == 0) { | |
607 r->schema_start = value->data; | |
608 r->schema_end = value->data + value->len; | |
609 | |
610 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
611 "http3 schema \"%V\"", value); | |
612 | |
613 return NGX_OK; | |
614 } | |
615 | |
616 if (name->len == 10 && ngx_strncmp(name->data, ":authority", 10) == 0) { | |
617 r->host_start = value->data; | |
618 r->host_end = value->data + value->len; | |
619 | |
620 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
621 "http3 authority \"%V\"", value); | |
622 | |
623 return NGX_OK; | |
624 } | |
625 | |
626 if (name->len && name->data[0] == ':') { | |
627 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
628 "http3 unknown pseudo header \"%V\" \"%V\"", | |
629 name, value); | |
630 return NGX_OK; | |
631 } | |
632 | |
633 return NGX_DONE; | |
634 } | |
635 | |
636 | |
637 ngx_chain_t * | |
638 ngx_http_v3_create_header(ngx_http_request_t *r) | |
639 { | |
640 u_char *p; | |
641 size_t len, hlen, n; | |
642 ngx_buf_t *b; | |
643 ngx_uint_t i, j; | |
644 ngx_chain_t *hl, *cl, *bl; | |
645 ngx_list_part_t *part; | |
646 ngx_table_elt_t *header; | |
647 ngx_connection_t *c; | |
648 ngx_http_core_loc_conf_t *clcf; | |
649 | |
650 c = r->connection; | |
651 | |
652 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 create header"); | |
653 | |
654 /* XXX support chunked body in the chunked filter */ | |
655 if (r->headers_out.content_length_n == -1) { | |
656 return NULL; | |
657 } | |
658 | |
659 len = 0; | |
660 | |
661 if (r->headers_out.status == NGX_HTTP_OK) { | |
662 len += ngx_http_v3_encode_prefix_int(NULL, 25, 6); | |
663 | |
664 } else { | |
665 len += 3 + ngx_http_v3_encode_prefix_int(NULL, 25, 4) | |
666 + ngx_http_v3_encode_prefix_int(NULL, 3, 7); | |
667 } | |
668 | |
669 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
670 | |
671 if (r->headers_out.server == NULL) { | |
672 if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_ON) { | |
673 n = sizeof(NGINX_VER) - 1; | |
674 | |
675 } else if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_BUILD) { | |
676 n = sizeof(NGINX_VER_BUILD) - 1; | |
677 | |
678 } else { | |
679 n = sizeof("nginx") - 1; | |
680 } | |
681 | |
682 len += ngx_http_v3_encode_prefix_int(NULL, 92, 4) | |
683 + ngx_http_v3_encode_prefix_int(NULL, n, 7) + n; | |
684 } | |
685 | |
686 if (r->headers_out.date == NULL) { | |
687 len += ngx_http_v3_encode_prefix_int(NULL, 6, 4) | |
688 + ngx_http_v3_encode_prefix_int(NULL, ngx_cached_http_time.len, | |
689 7) | |
690 + ngx_cached_http_time.len; | |
691 } | |
692 | |
693 if (r->headers_out.content_type.len) { | |
694 n = r->headers_out.content_type.len; | |
695 | |
696 if (r->headers_out.content_type_len == r->headers_out.content_type.len | |
697 && r->headers_out.charset.len) | |
698 { | |
699 n += sizeof("; charset=") - 1 + r->headers_out.charset.len; | |
700 } | |
701 | |
702 len += ngx_http_v3_encode_prefix_int(NULL, 53, 4) | |
703 + ngx_http_v3_encode_prefix_int(NULL, n, 7) + n; | |
704 } | |
705 | |
706 if (r->headers_out.content_length_n == 0) { | |
707 len += ngx_http_v3_encode_prefix_int(NULL, 4, 6); | |
708 | |
709 } else { | |
710 len += ngx_http_v3_encode_prefix_int(NULL, 4, 4) + 1 + NGX_OFF_T_LEN; | |
711 } | |
712 | |
713 if (r->headers_out.last_modified == NULL | |
714 && r->headers_out.last_modified_time != -1) | |
715 { | |
716 len += ngx_http_v3_encode_prefix_int(NULL, 10, 4) + 1 | |
717 + sizeof("Last-Modified: Mon, 28 Sep 1970 06:00:00 GMT"); | |
718 } | |
719 | |
720 /* XXX location */ | |
721 | |
722 #if (NGX_HTTP_GZIP) | |
723 if (r->gzip_vary) { | |
724 if (clcf->gzip_vary) { | |
725 /* Vary: Accept-Encoding */ | |
726 len += ngx_http_v3_encode_prefix_int(NULL, 59, 6); | |
727 | |
728 } else { | |
729 r->gzip_vary = 0; | |
730 } | |
731 } | |
732 #endif | |
733 | |
734 part = &r->headers_out.headers.part; | |
735 header = part->elts; | |
736 | |
737 for (i = 0; /* void */; i++) { | |
738 | |
739 if (i >= part->nelts) { | |
740 if (part->next == NULL) { | |
741 break; | |
742 } | |
743 | |
744 part = part->next; | |
745 header = part->elts; | |
746 i = 0; | |
747 } | |
748 | |
749 if (header[i].hash == 0) { | |
750 continue; | |
751 } | |
752 | |
753 len += ngx_http_v3_encode_prefix_int(NULL, header[i].key.len, 3) | |
754 + header[i].key.len | |
755 + ngx_http_v3_encode_prefix_int(NULL, header[i].value.len, 7 ) | |
756 + header[i].value.len; | |
757 } | |
758 | |
759 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 header len:%uz", len); | |
760 | |
761 b = ngx_create_temp_buf(r->pool, len); | |
762 if (b == NULL) { | |
763 return NULL; | |
764 } | |
765 | |
766 *b->last++ = 0; | |
767 *b->last++ = 0; | |
768 | |
769 if (r->headers_out.status == NGX_HTTP_OK) { | |
770 /* :status: 200 */ | |
771 *b->last = 0xc0; | |
772 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 25, 6); | |
773 | |
774 } else { | |
775 /* :status: 200 */ | |
776 *b->last = 0x70; | |
777 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 25, 4); | |
778 *b->last = 0; | |
779 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 3, 7); | |
780 b->last = ngx_sprintf(b->last, "%03ui ", r->headers_out.status); | |
781 } | |
782 | |
783 if (r->headers_out.server == NULL) { | |
784 if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_ON) { | |
785 p = (u_char *) NGINX_VER; | |
786 n = sizeof(NGINX_VER) - 1; | |
787 | |
788 } else if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_BUILD) { | |
789 p = (u_char *) NGINX_VER_BUILD; | |
790 n = sizeof(NGINX_VER_BUILD) - 1; | |
791 | |
792 } else { | |
793 p = (u_char *) "nginx"; | |
794 n = sizeof("nginx") - 1; | |
795 } | |
796 | |
797 /* server */ | |
798 *b->last = 0x70; | |
799 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 92, 4); | |
800 *b->last = 0; | |
801 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, n, 7); | |
802 b->last = ngx_cpymem(b->last, p, n); | |
803 } | |
804 | |
805 if (r->headers_out.date == NULL) { | |
806 /* date */ | |
807 *b->last = 0x70; | |
808 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 6, 4); | |
809 *b->last = 0; | |
810 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, | |
811 ngx_cached_http_time.len, 7); | |
812 b->last = ngx_cpymem(b->last, ngx_cached_http_time.data, | |
813 ngx_cached_http_time.len); | |
814 } | |
815 | |
816 if (r->headers_out.content_type.len) { | |
817 n = r->headers_out.content_type.len; | |
818 | |
819 if (r->headers_out.content_type_len == r->headers_out.content_type.len | |
820 && r->headers_out.charset.len) | |
821 { | |
822 n += sizeof("; charset=") - 1 + r->headers_out.charset.len; | |
823 } | |
824 | |
825 /* content-type: text/plain */ | |
826 *b->last = 0x70; | |
827 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 53, 4); | |
828 *b->last = 0; | |
829 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, n, 7); | |
830 | |
831 p = b->last; | |
832 b->last = ngx_copy(b->last, r->headers_out.content_type.data, | |
833 r->headers_out.content_type.len); | |
834 | |
835 if (r->headers_out.content_type_len == r->headers_out.content_type.len | |
836 && r->headers_out.charset.len) | |
837 { | |
838 b->last = ngx_cpymem(b->last, "; charset=", | |
839 sizeof("; charset=") - 1); | |
840 b->last = ngx_copy(b->last, r->headers_out.charset.data, | |
841 r->headers_out.charset.len); | |
842 | |
843 /* update r->headers_out.content_type for possible logging */ | |
844 | |
845 r->headers_out.content_type.len = b->last - p; | |
846 r->headers_out.content_type.data = p; | |
847 } | |
848 } | |
849 | |
850 if (r->headers_out.content_length_n == 0) { | |
851 /* content-length: 0 */ | |
852 *b->last = 0xc0; | |
853 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 4, 6); | |
854 | |
855 } else if (r->headers_out.content_length_n > 0) { | |
856 /* content-length: 0 */ | |
857 *b->last = 0x70; | |
858 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 4, 4); | |
859 p = b->last++; | |
860 b->last = ngx_sprintf(b->last, "%O", r->headers_out.content_length_n); | |
861 *p = b->last - p - 1; | |
862 } | |
863 | |
864 if (r->headers_out.last_modified == NULL | |
865 && r->headers_out.last_modified_time != -1) | |
866 { | |
867 /* last-modified */ | |
868 *b->last = 0x70; | |
869 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 10, 4); | |
870 p = b->last++; | |
871 b->last = ngx_http_time(b->last, r->headers_out.last_modified_time); | |
872 *p = b->last - p - 1; | |
873 } | |
874 | |
875 #if (NGX_HTTP_GZIP) | |
876 if (r->gzip_vary) { | |
877 /* vary: accept-encoding */ | |
878 *b->last = 0xc0; | |
879 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 59, 6); | |
880 } | |
881 #endif | |
882 | |
883 part = &r->headers_out.headers.part; | |
884 header = part->elts; | |
885 | |
886 for (i = 0; /* void */; i++) { | |
887 | |
888 if (i >= part->nelts) { | |
889 if (part->next == NULL) { | |
890 break; | |
891 } | |
892 | |
893 part = part->next; | |
894 header = part->elts; | |
895 i = 0; | |
896 } | |
897 | |
898 if (header[i].hash == 0) { | |
899 continue; | |
900 } | |
901 | |
902 *b->last = 0x30; | |
903 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, | |
904 header[i].key.len, | |
905 3); | |
906 for (j = 0; j < header[i].key.len; j++) { | |
907 *b->last++ = ngx_tolower(header[i].key.data[j]); | |
908 } | |
909 | |
910 *b->last = 0; | |
911 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, | |
912 header[i].value.len, | |
913 7); | |
914 b->last = ngx_copy(b->last, header[i].value.data, header[i].value.len); | |
915 } | |
916 | |
917 cl = ngx_alloc_chain_link(c->pool); | |
918 if (cl == NULL) { | |
919 return NULL; | |
920 } | |
921 | |
922 cl->buf = b; | |
923 cl->next = NULL; | |
924 | |
925 n = b->last - b->pos; | |
926 | |
927 len = 1 + ngx_http_v3_encode_varlen_int(NULL, n); | |
928 | |
929 b = ngx_create_temp_buf(c->pool, len); | |
930 if (b == NULL) { | |
931 return NULL; | |
932 } | |
933 | |
934 *b->last++ = NGX_HTTP_V3_FRAME_HEADERS; | |
935 b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last, n); | |
936 | |
937 hl = ngx_alloc_chain_link(c->pool); | |
938 if (hl == NULL) { | |
939 return NULL; | |
940 } | |
941 | |
942 hl->buf = b; | |
943 hl->next = cl; | |
944 | |
945 hlen = 1 + ngx_http_v3_encode_varlen_int(NULL, len); | |
946 | |
947 if (r->headers_out.content_length_n >= 0) { | |
948 len = 1 + ngx_http_v3_encode_varlen_int(NULL, | |
949 r->headers_out.content_length_n); | |
950 | |
951 b = ngx_create_temp_buf(c->pool, len); | |
952 if (b == NULL) { | |
953 NULL; | |
954 } | |
955 | |
956 *b->last++ = NGX_HTTP_V3_FRAME_DATA; | |
957 b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last, | |
958 r->headers_out.content_length_n); | |
959 | |
960 bl = ngx_alloc_chain_link(c->pool); | |
961 if (bl == NULL) { | |
962 return NULL; | |
963 } | |
964 | |
965 bl->buf = b; | |
966 bl->next = NULL; | |
967 cl->next = bl; | |
968 } | |
969 | |
970 return hl; | |
971 } |